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CN215883497U - Locking mechanism and vehicle event data recorder - Google Patents

️Tue Feb 22 2022

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, a locking mechanism according to an embodiment of the present invention includes a

main body base

100, a supporting

base

200, and a

braking assembly

300. The

braking assembly

300 is disposed on the

host base

100, the

host base

100 is connected to the supporting

base

200, and the

braking assembly

300 is used for preventing the supporting

base

200 from being separated from the

host base

100 when the locking mechanism is impacted by an external force.

As shown in fig. 2, the

host base

100 includes a mounting housing 110, a

mounting portion

120 is disposed on the mounting housing 110, and the

mounting portion

120 includes a

base

130 and a

circumferential wall

140. The

base

130 is attached to one end of the

peripheral wall

140 and encloses a mounting slot that is open at one end. The mounting groove is configured to receive at least a portion of the

support base

200 such that the mounting shell 110 is cooperatively coupled with the

support base

200. In the present embodiment, the

circumferential wall

140 is provided with a first

bone insertion portion

150, a second

bone insertion portion

160 and a third

bone insertion portion

170 protruding from the inner surface of the

circumferential wall

140. The first

interposing part

150 has a

long side

151 and a

short side

152, and the

long side

151 and the

short side

152 are perpendicularly arranged to each other in an "L" shape. The end face of the

short side

152 at the end remote from the

long side

151 is in the same plane as the end face of the

substrate

130. A first

engaging space

153 is formed between the first

bone inserting portion

150, the

circumferential wall

140 and the

base

130 for engaging with the structure of the supporting

seat

200. In the present embodiment, the second and third

interposing portions

160 and 170 are substantially the same as the first interposing

portion

150 in shape and size, and are sequentially provided at intervals in the same orientation on the inner surface of the

circumferential wall

140. Similarly, a second engagement space (not numbered) is formed among the second

bone insertion portion

160, the

circumferential wall

140 and the

base

130, and a third engagement space (not numbered) is formed among the third

bone insertion portion

170, the

circumferential wall

140 and the

base

130, all of which are used for engagement connection with the structure on the

support base

200.

It is understood that the dimensions of the second and

third bone portions

160 and 170 may be modified according to the actual fit.

As an example, in the present embodiment, the

mounting portion

120 is disposed at one side of the mounting housing 110, and the mounting housing 110 is taken out with a vertical section passing through the

mounting portion

120, resulting in a cross section of the mounting housing 110 having an outer contour in a parabolic shape with an opening downward. In other embodiments, the contour of the mounting housing 110 is not limited to the shape shown in the drawings of the specification.

Continuing with fig. 2, mounting housing 110 is provided with displacement through-

holes

180, and displacement through-

holes

180 are used to provide displacement space for components on

brake assembly

300. Specifically, the displacement through-

hole

180 is disposed on the

base

130 of the

mounting part

120 between the first and third interposing

parts

150 and 170. The displacement through-

hole

180 extends from an edge position of the base 130 to a center position thereof by a set length, which is set according to a specific stroke of the

brake assembly

300. In the present embodiment, the shape of the displacement through

hole

180 is square, but not limited to square.

As shown in fig. 2, the

base

130 of the mounting

portion

120 is provided with an arc-shaped protrusion for matching with the end surface of the supporting

seat

200 facing the

base

130, so as to identify whether the supporting

seat

200 is accurately mounted in place during the mounting process, and also has an auxiliary function of preventing the supporting

seat

200 from retracting. The cross section of the arc-shaped bulge is of a convex arc surface type. In this embodiment, the two arc-shaped protrusions are provided, including a first arc-shaped

protrusion

141 between the first

bone inserting portion

150 and the second

bone inserting portion

160, and a second arc-shaped

protrusion

142 between the second

bone inserting portion

160 and the third

bone inserting portion

170. The arc-shaped protrusion extends a set length from an edge position of the base 130 to a center position thereof.

As shown in fig. 2, the

base

130 of the mounting

portion

120 is further provided with a fool-

proof portion

132, and the fool-

proof portion

132 is engaged with the supporting

seat

200 for preventing an erroneous operation during installation. In the present embodiment, the fool-

proof portion

132 is located between the first bone-inserting

portion

150 and the third bone-inserting

portion

170, but does not interfere with the displacement through

hole

180.

Continuing with fig. 2, mounting through-

holes

190 are provided at corresponding locations on the mounting housing 110 adjacent to the displacement through-

holes

180, and in this embodiment, the mounting through-

holes

190 are provided at the top of the mounting housing 110. The mounting through

hole

190 is communicated with the displacement through

hole

180, the mounting through

hole

190 and the displacement through

hole

180 are used together for mounting the

brake assembly

300, and the

brake assembly

300 has a movement stroke relative to the mounting through

hole

190 and the displacement through

hole

180. As shown in fig. 3, the bottom of the mounting through-

hole

190 is provided with a

sunken groove

191, that is, the

sunken groove

191 extends from the bottom end surface of the mounting through-

hole

190 to the top, and the depth of the

sunken groove

191 is set according to the structure of the

brake assembly

300 engaged therewith. The

sink

191 serves to limit the stroke of the

brake assembly

300 within the mounting through-

hole

190. The mounting housing 110 is formed with a

catch

192 at a position near the mounting through-

hole

190, the

catch

192 being shaped like an "L". The upper end faces of the short sides of the

pawl

192 engage with the structure of the bottom of the

brake assembly

300 to carry the

brake assembly

300. The long sides of the

claws

192 are parallel to the center line of the mounting through-

hole

190. In the present embodiment, the

claws

192 are provided in two and are symmetrical with respect to the center line of the mounting through-

hole

190.

As shown in fig. 3, the mounting case 110 has a

stopper

193 formed at a position on the side of the

claw

192 away from the center line of the mounting through

hole

190 and spaced from the mounting through

hole

190 by a predetermined distance, and a bottom end surface of the

stopper

193 is located above an upper end surface of a short side of the

claw

192. The

stopper

193 cooperates with the

pawl

192 to position a portion of the

brake assembly

300 that is not displaced relative to the

main body base

100.

As shown in fig. 2, the

actuating assembly

300 includes a

button

310, an

elastic member

320, and a

stopper plate

330. In this embodiment, the

button

310 is cylindrical, and the

elastic element

320 is a spring. The key 310 includes a

key cap

311 and a

key rod

312, which are integrally formed and have center lines overlapped with each other, one end of the

key rod

312 is located in the hollow chamber of the

key cap

311, and the other end thereof extends out of the

key cap

311. The outer surface of the bottom of the

key cap

311 is provided with a

boss

314, and the top end surface of the

boss

314 can be matched with the bottom surface of the

sunken groove

191, so that the stroke of the key 310 is limited. It is understood that in other embodiments, the travel of the key 310 may be limited in other manners, for example, a sunken groove is formed on the key 310, and a boss is formed in the through-

hole

190 and is engaged with the sunken groove. As shown in fig. 2, a retaining

portion

315 is disposed on an extension line of the radial direction of the

boss

314, and the retaining

portion

315 is engaged with the supporting

seat

200 through the displacement through

hole

180 of the

host base

100 to prevent the supporting

seat

200 from being separated from the

host base

100 when being impacted by an external force. Referring to fig. 3, the inner surface of the

key cap

311 is provided with a resisting

plate

313, and the resisting

plate

313 is used for abutting against the top end surface of the

elastic element

320 sleeved on the

key rod

312 to limit the movement stroke of the

elastic element

320.

In this embodiment, the retaining portion 350 is in a right trapezoid shape, and the corner between the waist and the bottom of the right trapezoid is a rounded corner. The side of the retaining portion 350 away from the

boss

314 may be considered as the waist of a right trapezoid (hereinafter, the side of the retaining portion 350 away from the

boss

314 may be referred to as the waist of the retaining portion 350).

With reference to fig. 2, in the present embodiment, the limiting

plate

330 is a rectangular parallelepiped structure, and a stepped

hole

331 is formed in the center of the limiting

plate

330 in the thickness direction. When the

host base

100 is engaged with the

stopper member

300, the

key rod

312 is inserted through the stepped

hole

331 and can move relative to the stepped

hole

331. The stepped surface of the stepped

hole

331 abuts against the bottom end surface of the

elastic element

320 fitted over the

key lever

312 to limit the movement stroke of the

elastic element

320. The limiting

plate

330 is provided with two

square holes

332 in the thickness direction, in this embodiment, the two

square holes

332 are respectively located at the left and right ends of the limiting

plate

330, and the two

square holes

332 are symmetrically arranged with respect to the center point of the limiting

plate

330. The distance between the two

square holes

332 is adapted to fit symmetrically arranged

claws

192. As shown in fig. 3, when the

brake assembly

300 and the

host base

100 are assembled, the

claw

192 is engaged with the bottom end surface of the limiting

plate

330 through the

square hole

332, so as to perform the function of bearing the limiting

plate

330, so that the limiting

plate

330 is fixed relative to the

host base

100 and will not be separated from the

host base

100 when receiving an external force.

It is to be understood that the shapes of the

keys

310 and the

restriction plate

330 are not limited to the above-described embodiment, and may be, for example, an oval shape or the like.

Referring to fig. 3, in order to understand the relationship between the

brake assembly

300 and the

host base

100 in the assembled state, the

key cap

311 in fig. 3 is not applied with an external force. The

brake assembly

300 is located on the

main body base

100. The

key cap

311 penetrates the mounting through

hole

190 and is exposed out of the mounting through

hole

190. The upper end face of the

boss

314 on the

keycap

311 is matched with the bottom end face of the

sunken groove

191 arranged in the mounting through

hole

190, the bottom end face of the

limit plate

330 is matched with the end face of the short side of the

claw

192, and the top end face of the

limit plate

330 is matched with the bottom end face of the

stop part

193 relatively. The

elastic element

320 is sleeved on the

key rod

312, and the bottom end surface of the elastic element is abutted against the step surface of the

step hole

331 of the limiting

plate

330, and the top end surface of the elastic element is abutted against the bottom end surface of the

abutting plate

313 in the

key cap

311. As shown in fig. 6, the retaining

portion

315 extends into the mounting

portion

120 through the displacement through

hole

180. When an external force is applied to the

key cap

311, as shown in fig. 7, the

elastic element

320 is compressed, and the retaining

portion

315 is withdrawn from the mounting

portion

120 along with the downward movement of the key 310. When the external force is removed, the

elastic element

320 pushes the

button

310 to move upward under the elastic restoring force, and the retaining

portion

315 moves upward along with the

button

310 and protrudes into the mounting

portion

120 through the displacement through

hole

180 again. When the upper end surface of the

boss

314 touches the lower end surface of the

sink

191, the key 310 is limited and cannot move upwards continuously.

The assembly process of the

brake assembly

300 and the

main unit base

100 is as follows: in the orientation shown in fig. 2, the key 310 is first installed into the

installation hole

190 from the bottom up, and at this time, the retaining

portion

315 extends into the

installation portion

120 through the

displacement hole

180. The

elastic member

320 is sleeved on the

key rod

312, and finally the limiting

plate

330 is connected to the

main body base

100 through the

claws

192.

As shown in fig. 2, the

support base

200 includes a

connection rod

210 and a

connection plate

220, and the

connection rod

210 is used for connecting with an external component. The end of the connecting

rod

210 facing away from the connecting

plate

220 is provided with a

spherical structure

211. In the present embodiment, the external member connected to the

connection rod

210 is a suction cup holder. The suction cup holder is provided with a spherical concave surface for accommodating the

spherical structure

211. In the present embodiment, the circumferential dimension of the

connection plate

220 is adapted to the circumferential dimension of the mounting

portion

120 of the mounting case 110, and the

end surface

221 of the

connection plate

220 facing the mounting case 110 is provided with a structure for connecting to the

host base

100. Specifically, the

end surface

221 is provided with an

annular protrusion

230 protruding from the

end surface

221. The outer surface of the

annular protrusion

230 is sequentially provided with a first screwing

part

231, a second screwing

part

232 and a third screwing

part

233. The first rotary-

joint part

231, the second rotary-

joint part

232 and the third rotary-

joint part

233 are respectively used for being rotatably connected with the first bone-inserting

part

150, the second bone-inserting

part

160 and the third bone-inserting

part

170 arranged on the

host base

100.

In a top projection view, a projection area of the

annular protrusion

230 is located within a projection area of the

connection plate

220, and projections of circumferential surfaces of the first, second, and third screwing

portions

231, 232, and 233 overlap with a projection of the circumferential surface of the

connection plate

220.

Referring to fig. 4, the first, second and third screwing

portions

231, 232 and 233 are all in the shape of an "L", and in this embodiment, the length of the horizontal side of the "L" is greater than that of the vertical side thereof. The vertical sides of the first screwing

part

231, the second screwing

part

232 and the third screwing

part

233 are respectively connected with the

end surface

221, and the bottom end surfaces of the horizontal sides of the first screwing part, the second screwing

part

232 and the third screwing

part

233 are all located in the same horizontal plane with the bottom end surface of the annular

convex part

230.

Taking the first engaging

portion

231 as an example, as shown in fig. 4, the "L" shaped first engaging

portion

231 includes a

long side

241 and a

short side

251. On the front projection drawing, a first rotary-

closing cavity

261 is formed between the first rotary-closing

portion

231 and the

end surface

221 of the connecting

plate

220, and the first rotary-

closing cavity

261 is substantially in a shape of "pi", wherein the opening direction of the "pi" structure is located in the circumferential direction. Similarly, a second screwing cavity (not shown) is formed between the second screwing

part

232 and the

end surface

221 of the connecting

plate

220, and a third screwing cavity (not shown) is formed between the third screwing

part

233 and the

end surface

221 of the connecting

plate

220.

In the relative rotation process between the supporting

base

200 and the

main body base

100, the

long side

151 of the first

bone inserting portion

150 is gradually engaged with the first screwing

portion

231 from the opening direction of the "ii" shape, and the horizontal side of the first screwing

portion

231 is gradually engaged with the first

engaging space

153. The engagement principle between the

second rotation portion

232 and the second

bone insertion portion

160 and the engagement principle between the

third rotation portion

233 and the third

bone insertion portion

170 can be referred to the engagement principle between the

first rotation portion

231 and the first

bone insertion portion

150. The second

engaging portion

232 always keeps opposite to the displacement through

hole

180 during the relative rotation between the supporting

base

200 and the

host base

100.

As shown in fig. 4, the first, second and third screwing

portions

231, 232 and 233 are spaced apart from each other at a predetermined interval on the circumferential surface of the

annular protrusion

230. For ease of understanding and description, the

annular protrusion

230 may be viewed as being separated into three arc segments by a

first convolution

231, a

second convolution

232, and a

third convolution

233. The portion between the first

rotary portion

231 and the second

rotary portion

232 is regarded as a

first arc

234, the portion between the second

rotary portion

232 and the third

rotary portion

233 is regarded as a

second arc

235, and the portion between the first

rotary portion

231 and the third

rotary portion

233 is regarded as a

third arc

236. In the orientation shown in fig. 4, a receiving

portion

237 is formed in the area between the end surface of the left side of the second

engaging portion

232 and the outer surface of the

first arc

234.

As shown in fig. 8a and 8b, fig. 8a shows the position relationship between the

support base

200 and the

brake assembly

300 in the braking state, and fig. 8b shows the relative position relationship between the

support base

200 and the

brake assembly

300 in the braking release state. Specifically, in the braking state, the side surface of the retaining

portion

315 abuts against the side surface of the second screwing

portion

232 in the retraction direction, so as to prevent the

support base

200 from being retracted and separated from the

host base

100 when the locking mechanism is impacted by external force. In the released state, the

elastic element

320 is compressed, and the retaining

portion

315 faces the plane of the end surface of the

second rotation portion

232 facing the

main unit base

100, but does not intersect the plane.

As shown in fig. 4, the supporting

base

200 is provided with an avoiding

groove

222 for cooperating with the fool-

proof portion

132 of the

host base

100, and when the

host base

100 and the supporting

base

200 are assembled, the installation direction can be identified by the fool-

proof portion

132 and the avoiding

groove

222. Specifically, the

avoidance groove

222 is provided on the

first arc section

234, and extends from the bottom end surface of the

first arc section

234 toward the top of the

first arc section

234. That is, the height of the

first arc segment

234 is less than the height of the second and

third arc segments

235, 236 in a direction from the connecting

plate

220 toward the

annular boss

230.

Continuing with FIG. 4, the bottom end surface of the

second arc segment

235 is provided with a continuous first

convex arc surface

245 and a continuous first

concave arc surface

255, and likewise, the bottom end surface of the

third arc segment

236 is provided with a continuous second

convex arc surface

246 and a continuous second

concave arc surface

256. During the relative rotation between the

support base

200 and the

host base

100, the first arc-shaped

protrusion

141 of the mounting

portion

120 slides relative to the first arc-shaped

surface

245, and the second arc-shaped

protrusion

142 slides relative to the second arc-shaped

surface

246. When the

host base

100 and the

support base

200 are assembled, the first arc-shaped

protrusion

141 abuts against the first

concave arc surface

255, and the second arc-shaped

protrusion

142 abuts against the second

concave arc surface

256.

As shown in fig. 5, when the

host base

100 and the supporting

base

200 are mounted, in order to prevent the heights of the first arc-shaped

protrusion

141 and the second arc-shaped

protrusion

142 from affecting the fit between the base 130 and the bottom end surface of the

annular protrusion

230, the bottom end surface of the first screwing

part

231 is provided with a

step surface

271, and the bottom end surface of the third screwing

part

233 is provided with a

step surface

281, so that the bottom end surface of the first screwing

part

231 and the bottom end surface of the third screwing

part

233 have a height difference, and the first arc-shaped

protrusion

141 and the second arc-shaped

protrusion

142 are avoided, thereby better matching the assembling surface.

As shown in fig. 4, in the present embodiment, the

connection plate

220 is provided with a

compensation rib

223 on a long side facing the first screwing

part

231. It is understood that the heights of the top end surfaces of the first, second and third

bone insertion portions

150, 160 and 170 provided on the mounting housing 110 from the contour surface of the mounting housing 110 are not necessarily the same, such as when a large fitting gap occurs when the

long side

151 of the first

bone insertion portion

150 is fitted with the

first screw portion

231, the

compensation rib

223 is used to compensate the above-mentioned gap thereof. Similarly, the

connection board

220 may also be provided with a compensation rib toward the long side of the second screwing

portion

232.

As shown in fig. 2, a margin groove 253 is axially provided on a side of the third screw-on

portion

233 close to the center line of the

annular protrusion

230, and the margin groove 253 is used to reduce the wall thickness of a corresponding position to prevent shrinkage deformation.

The principle of the locking mechanism of the embodiment is as follows: when pre-installed, the

main body base

100 and the

brake assembly

300 are assembled. Referring to fig. 7, when the

button

310 is pressed, the

elastic element

320 is compressed, the retaining

portion

315 moves downward, and the waist portion of the retaining

portion

315 having the right-angled trapezoid structure is received in the displacement through

hole

180. At this time, the retaining

portion

315 having the rectangular trapezoid structure does not interfere with the mounting surface of the

cradle

200 and the

host base

100. The avoiding

groove

222 on the supporting

base

200 corresponds to the fool-

proof portion

132, the end surface of the second screwing

portion

232 opposite to the

base

130 of the mounting

portion

120 corresponds to the displacement through

hole

180, so that the supporting

base

200 and the

host base

100 rotate relatively, the first screwing

portion

231 is gradually embedded with the first

bone insertion portion

150, the second screwing

portion

232 is gradually embedded with the second

bone insertion portion

160, and the third screwing

portion

233 is gradually embedded with the third

bone insertion portion

170. If the force applied to the key 310 is removed during the relative rotation of the supporting

base

200 and the

host base

100, the retaining

portion

315 will be engaged with the surface of the second screwing

portion

232 opposite to the second screwing

portion

232 under the elastic force of the

elastic element

320 and generate sliding friction with the bottom end surface of the second screwing

portion

232; if the external force is not removed during the rotation process, no sliding friction is generated, and the second screwing

part

232 only rotates relative to the displacement through

hole

180.

As shown in fig. 6, when the supporting

seat

200 is rotated to a certain position, the

elastic element

320 resets and pushes the

button

310 to move, the retaining

portion

315 moves relative to the displacement through

hole

180 under the driving of the

button

310, and extends out of the displacement through

hole

180 to enter the

accommodating portion

237 to abut against the second screwing

portion

232, that is, the waist portion and the portion near the waist portion of the retaining

portion

315 enter the mounting

portion

120 to interfere with the rotation of the second screwing

portion

232. The waist of the rectangular trapezoid-shaped retaining portion 350 can avoid interference with the supporting

seat

200 when the brake is released.

When the locking mechanism needs to be released, an external force is applied to the key 310, the retaining

portion

315 moves to accommodate the waist in the displacement through

hole

180, and the

support base

200 and the

host base

100 rotate in opposite directions to unlock the lock. The locking mechanism does not need excessive parts, and is simple in structure, low in cost and stable in connection performance.

The utility model provides a vehicle event data recorder, includes sucking disc support, electronic camera and above-mentioned any one locking mechanism, and the sucking disc support is used for fixing on the automobile body structure and is connected with locking mechanism's supporting

seat

200. The sucker bracket has a spherical inner concave surface, the

spherical structure

211 on the supporting

seat

200 is accommodated in the spherical inner concave surface, and the supporting

seat

200 can rotate relative to the sucker bracket. The electronic camera is detachably connected with the

host base

100 of the locking mechanism, and the shooting angle of the electronic camera can be adjusted by enabling the supporting

seat

200 and the sucker support to rotate relatively.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.