CN110677515A - Synchronizing mechanism and folding display device - Google Patents

Referring to fig. 1 and 2, the foldable display device of the present application includes a foldable hinge, a synchronizing

30 assembled on the foldable hinge, and a distance

40 hinged on the foldable hinge.

Referring to fig. 1 to 8 and 16, the folding hinge includes a plurality of

10 hinged to each other at two ends, a

20 for fixing the

10, and a reinforcing

15.

The

10 comprises a

11 positioned in the middle, at least one strip-

12 respectively hinged on two sides of the

11, and a

13 hinged on the outer side of the strip-

12.

The

11 includes a

111, a

112, a

114, a damping groove 115, a

117 between the

112 and the

114, a

118 between the

114 and the damping groove 115, and a

119 outside the damping groove 115, wherein the

112, the

114, and the damping groove 115 are recessed in this order.

The inner side surface of the

112 of the

11, the inner side surfaces of the bar-shaped body 1 and the

13 are in the same horizontal plane, the

10 are respectively provided with a convex block 101 in a protruding manner in the transverse direction of the position of the

112, and the convex blocks 101 are provided with screw holes 102. The

11, the

12 and the lug 101 on the

13 are in the same straight line in the transverse direction.

Referring to fig. 2 and 16, the free end of the

11 protrudes outward to form a

127,

128 are formed on both lateral sides of the

127,

129 and

135 hinged in the

128 are respectively formed on both lateral sides of the free end of the bar-

12 of the

11, and hinge protrusions hinged in the

135 of the bar-

12 are formed on the free end of the rotating

13. The

128, 135 are movably hinged to the

129 by bolts (not numbered). Two

12 and a

13 are respectively hinged on two sides of the

11 in sequence. The design of the hinge structure at the free end of the

10 is described in detail in the patent application CN201920305522.0, and will not be described in detail here.

The

20 includes a fixed

21 and a fixed

22 rotating in cooperation with the fixed

21. Each of the female and male fixed

21, 22 includes a

211, a

212 opened at the bottom of the

211 for accommodating the bump 101, an

213 opened at the top of the

211, and a

214 penetrating the

211 and communicating the upper and

212, 213. The

215, the

216 and the arc-

217 between the

215 and the

216 are respectively formed at two longitudinal ends of the

211 of the female fixed

21 in an extending manner, and the

215 and the

216 at the two longitudinal ends of the female fixed

21 respectively extend in opposite directions in a transverse direction, that is, the extending directions of the arc-

217 at the two longitudinal ends of the female fixed

21 are opposite and are arranged in a point symmetry manner. The fixed

22 further comprises arc-shaped blocks 219 formed by extending from the two longitudinal ends of the

211, the arc-shaped blocks 219 are matched with the arc-

217, and the arc-shaped blocks 219 at the two longitudinal ends of the

22 extend along opposite directions in the transverse direction and are arranged in point symmetry. The arcuate segments 219 snap into the

217 and are rotatable within the

217.

The

21 and the

22 of the

20 are screwed on the protrusion 101 of the

10 by a bolt or a screw (not shown), the protrusion 101 is fitted into the lower avoiding

212, the bolt passes through the

214 and is locked in the screw hole 102 of the protrusion 101, and a nut portion of the bolt is accommodated in the upper avoiding

213. A fixed

21 is arranged on the convex block 101 of the

11, a fixed

22 matched with the fixed

21 is arranged on the strip-

12 close to the

11, and by analogy, a fixed

21 or a

22 is fixed on the rotating

13 positioned at the outermost side, but the fixed

21 or the

22 fixed on the rotating

13 only needs to be provided with an arc-

217 or an arc-shaped block 219 at one longitudinal end of the

211.

Referring to fig. 4 and 8, after the

112 of the

11 is concavely formed, a

113 is formed at the bottom of the

112, and an inner surface of the

113 is located on the same horizontal plane as that of the bar-

12 and the

13 in the unfolded state. The thickness of the connecting

113 is small, the force required to be carried by the

11 is large, and the strength of the connecting

113 is not enough to support, so that a fixing

120 is provided at a position corresponding to the

111 at both sides of the fixing

112 and the

117, a reinforcing

15 is inserted above the fixing

112, both ends of the reinforcing

15 are fixed in the fixing

120, and the reinforcing

15 is located above the fixing

20.

The outer surface of the folding hinge is adhered to a folding screen through a folding plate to realize outward folding, and the folding plate is fixed on the variable-

40.

The utility model provides a folding hinge is through set up at middle part position department at least a set of will

11, the

12 and change the fixed fixing

20 of

13, fixing

20 realizes right through the mutual rotation of fixed

21 and fixed

22

11, the

12 and change the roughness of

13 intermediate position department, avoid folding hinge's

11, the

12 and change the unable relative position that keeps of

13 and produce unsmooth problem.

Referring to fig. 1, fig. 2, fig. 4, fig. 9, and fig. 10, a

30 of the present application is assembled on the

11, and the

30 includes at least a pair of

31 and gears 35 respectively fixed on the pair of

31.

A pair of shaft holes 121 arranged transversely are respectively arranged in the transverse direction on the first and

117, 118 at the longitudinal two ends of the

114 of the

11, the transverse two sides of the

114 are provided with

122 for coating the transverse side surfaces of the

114, and the transverse two sides of the

114 close to the

117 are provided with

1141 for connecting the

40.

The pair of

31 are respectively sleeved in the pair of shaft holes 121, the pair of

35 are fixed on the pair of

31 and located in the

114, and the pair of

35 are engaged with each other. When the pair of

31 are driven by the

40 to rotate, the gears move along with the relative movement of the

31, so that the synchronization of the rotating amplitudes of the pair of

31 is realized, and the damage to the folding screen caused by the inconsistent rotating amplitudes of the two sides of the folding screen is avoided.

A

125 is formed by cutting the folded inner side surface of the free end of the

11 in the longitudinal direction, and the

119 penetrates a part of the

121 at a position corresponding to the

121, that is, the

121 penetrates the

119 and the

118 in the longitudinal direction, and the

117 is not penetrated. The pair of shaft holes 121 are respectively aligned on the same line. The

118 is located on one side of the damping groove 115 and protrudes to form a resisting

123, at least a part of the

121 is located on and penetrates through the resisting

123, and the

118 is located on one side of the damping groove 115 and located on the outer edge of the resisting

123 and provided with a

124. The

125 has a pair of

126 formed below the

121. The stopping

123 may also be formed to extend longitudinally from the

119 at one side of the damping groove 115.

The damping groove 115 is provided with a

32 sleeved outside the rotating

31, a first damping

33 sleeved outside the rotating

31, and a second damping

34 fixed on the

31 and matched with the first damping

33. The

32 is clamped between the

119 and the first damping

33, and the rear end of the second damping

34 abuts against the abutting

123. The first damping

33 includes a main body portion (not shown), through holes (not shown) formed on two lateral sides of the main body portion for the two

31 to pass through, and a concave-convex matching structure formed on one longitudinal side of the through holes, i.e., the first damping

33 is integrally sleeved on the

31. The second damping

34 has two, is fixed in respectively in

31 is last and along with

31's rotation rotates, second damping

34 corresponds the unsmooth cooperation structure of first damping

33 is equipped with corresponding unsmooth cooperation structure, through

32's elastic pressure makes first damping

33 with the unsmooth cooperation structure of second damping

34 mutually supports and produces periodic resistance or helping hand, realizes hovering of the different positions of folding in-process of folding screen, produces better user experience effect.

Referring to fig. 4 and 9 to 15, the

40 includes a rotating

41, a driving

46 capable of rotating in the

124 of the

11, a

47 disposed in the rotating

41 and driven by the driving

46, a connecting

43 capable of moving relative to the rotating

41, and a

44 for driving the connecting

43 to move by the

47.

As shown in fig. 10 to 12, the rotating

41 includes a

411, a rotating

412 extending from one lateral side of the

411 and fixed to the

31, a

415 formed by recessing the

411 and extending in a direction away from the rotating

412, and a first

416 formed on a back surface of the base 411 opposite to the

415. The

415 is partially recessed and formed on the

411, and is partially extended from the

411. The engaging

415 includes a recessed receiving

421, a limiting

422 formed by extending upward from two longitudinal sides of the receiving

421 and then bending and extending oppositely, engaging

423 formed on two outer edges of the receiving

421, a communicating

424 penetrating the receiving

421, a first rotating engaging

425 penetrating the engaging

415 and located at one longitudinal end of the communicating

424, a

426 opened on one limiting

422, and a

427 located on the back of the

411. The

424 includes a

4242 on the side of the first rotation-

425 and a

4241 on the side away from the first rotation-

425, and the

4241 has a width larger than that of the

4242. The

426 include

4261,

4262, and

4263 between the

4261 and the

4262.

The

46 includes a

461 rotatable about the

124 and a

462 engaging the

47. The

461 comprises a shaft structure extending towards one longitudinal side and sleeved in the

124, the

461 is located at the outer side of the abutting

123, a gap exists between the

461 and the second damping

34, and the second damping

34 does not interfere with the rotation of the

461. The driving

462 includes a post-like structure formed at the end.

The

44 includes first, second and third

441, 442, 443 arranged in sequence, and the first and third

441, 443 are respectively located at two ends of the second

442. The first

441 is fixed to the first

425 of the

41 by a rivet.

The

47 includes a

471, a

472 provided in the

471 and having a

473 on a lateral outer side thereof, a third

474 provided at an end of the

471 away from the

472 and riveted to the third

443 by a rivet, a

475 provided on one side of the third

474, and an

477 provided between the

472 and the third

474. The mounting

477 is provided with a

476 at a longitudinally outer side.

The connecting

43 includes a

431, a

432 formed by extending upward from both longitudinal sides of the

431 and then bending and extending vertically and oppositely, a fixing

433 formed by extending from the longitudinal outer side of the

432, a

434 sleeved in the

432, a

435 formed by the

434 covering the

432, a

436 arranged on the inner surface of the

431, a second

438 arranged on the rear end of the inner surface of the

431, and a

437 with one end fixed on the

436. The other end of the

437 is fixed to the

427 of the

41, and at least one pair of the

437 is provided. The second

442 of the

44 is fixed to the second

438 of the connecting

43 by a rivet, and the first, second and third

441, 442 and 443 can rotate around the first

425, the second

438 and the third

474, respectively.

The

477 of the

47 is installed with a

45, and the

45 includes a

451 disposed in the

477, a holding

453 extending out of the

476 of the

477 from the

451, and an

452 clamped between one end of the

451 and the inner wall of the

477. The

452 is positioned by a positioning post (not shown) provided on an inner wall of the mounting

477, the

452 provides an elastic force to the

45, so that the

453 maintains an outward supporting force, and the

453 is switched between the

4261 and the

4262 of the

426 of the

41 to realize a positioning function when the open state and the closed state are switched, thereby preventing an excessive opening or closing operation.

When the

40 is assembled, the

461 of the driving

46 is sleeved in the

124 on the outer side of the stopping

123; the

412 at the two longitudinal ends of the rotating

41 are respectively positioned in the

114, the arc-shaped

126 of the

125 and the

114, the rotating

31 is inserted into the hole structure on the

412 and the

121 on the

119 from one end of the

125 and extends into the damping groove 115, at this time, the

32 and the first and second damping

33, 34 are respectively sleeved outside the rotating

31, and the second damping

34 abuts against the

123; the rotating

31 is continuously pushed to make the

31 pass through the

121 on the

118 and extend to the

114, and meanwhile, a pair of

35 and a

412 are sleeved on the

31, and the rotating shaft is continuously pushed to be inserted into the

121 on the

117.

The rotating

13 includes a

131, a widened

132 extending from both longitudinal sides of the

131 in a transverse direction,

133 formed at both longitudinal ends of the

131, and second engaging

134 formed on outer side surfaces of the

133 and engaged with the first engaging

416. When the rotating

41 is assembled on the

11, the first engaging

416 and the second

134 are engaged with each other and can achieve a limit and move relatively when the rotating

41 rotates.

Before the rotating

41 is assembled to the

11, the

40 needs to be assembled as follows:

the other end of the

437 fixed to the

436 of the connecting

43 is fixed to the

427 on the back surface of the rotating

41, and the

442 of the

44 is rotatably fixed to the second

438 of the connecting

43 or the

441 is fixed to the first

425 of the rotating

41. The

435 of the connecting

43 is sleeved outside the matching

423 at both sides of the matching portion of the

41, and the

435 is covered with the

434 to enable the two to smoothly slide in a matching manner, thereby avoiding noise.

Fixing the

45 in the

477 of the

47, then installing the

47 in the

421 of the

41, wherein the limiting

422 at two sides of the

421 limit the position of the

47 in the longitudinal direction, and the

453 is elastically matched with the

426; at this time, the third

443 of the

44 is rotatably fixed to the third

474 of the

47. The first, second and third

441, 442 and 443 and the first, second and third

425, 438 and 474 may be combined by a hole and a column structure, or riveted in two hole structures.

The driving

462 of the driving

46 is clipped into the

472 of the driving

47, and the driving

46 extends out along the

473 at one side of the

472. The rotating

412 of the

114 extends along the

1141 of the

114.

The

40 further includes a

48, and the

48 is fixed above the

421 of the rotating

41 by screws to fix the

47 on the rotating

41.

The operation principle of the pitch-changing device of the application is as follows, when the connecting

43 is driven by the casing (such as a mobile phone casing) connected with the connecting seat to rotate, the rotating

13 drives the

10 to rotate together, the rotating

13 and the

41 move relatively through the first and

416 and 134, and simultaneously the driving

46 rotates along with the rotating plate, the driving

462 of the driving

46 drives the

47 to move in the

421 of the

41, so that the driving

44 on the

47 drives the connecting

43 to move, and the movement of the connecting

43 can enable the casing fixed on the connecting

43 to generate the change of the length distance, thereby adapting to the change of the length generated by bending the folding screen.

In this process, the

437 provides a connection and elastic force between the

43 and the

41. The

437 can also provide two states, and the positioning of the two positions of the unfolded state and the folded state can be realized by matching the

45 with the

426 provided on the

41.

1. A synchronizing mechanism is characterized by comprising a main shaft provided with a gear groove, at least one pair of rotating shafts passing through the gear groove and a pair of gears which are arranged in the gear groove and fixed on the pair of rotating shafts in an engaged manner respectively, wherein the pair of gears rotate along with the relative rotation of the pair of rotating shafts, and the rotating speeds of the pair of rotating shafts are consistent through the mutual engagement of the gears.

2. The synchronizing mechanism according to claim 1, wherein the main shaft includes a shaft body and a gear groove recessed from the shaft body, the gear groove has a first partition portion and a second partition portion formed at longitudinal ends thereof, the first partition portion and the second partition portion have shaft holes, the rotating shaft passes through the shaft hole of the second partition portion and the gear groove and extends into the shaft hole of the first partition portion, a rotating seat is fixed to the rotating shaft, and rotation of the rotating seat rotates the rotating shaft.

3. The synchronizing mechanism according to claim 2, wherein a plurality of bar-shaped bodies and rotating plates are further hinged to both lateral sides of the main shaft, a fixing groove is concavely formed on an inner side of a gear groove of the main shaft, a damping groove is concavely formed on an outer side of the gear groove, a third partition portion is formed on an outer side of the damping groove, a notch is cut off from an outer side of the third partition portion, and a shaft hole corresponding to the shaft hole of the second partition portion is formed through the third partition portion.

4. The synchronizing mechanism as claimed in claim 3, wherein the shaft is inserted into the shaft hole from the direction of the cut, a spring sleeved in the shaft, a first damping block sleeved on a pair of shafts, and two second damping blocks respectively sleeved on the pair of shafts and matched with the first damping block are disposed in the damping slot, and the spring provides elastic force to the first and second damping blocks.

5. The synchronizing mechanism according to claim 4, wherein the first damping block is an integral structure sleeved on the pair of rotating shafts, a concave-convex matching structure is disposed on a matching surface of the first damping block and the second damping block, and a blocking portion for blocking the second damping block is formed by extending an outer side of the second partition portion toward the damping groove.

6. The synchronizing mechanism according to claim 3, wherein the bottom of the fixing groove is formed with a connecting portion having a surface flush with the surfaces of the bar-shaped body and the rotating plate, and the connecting portion, the bar-shaped body and the rotating plate are formed with a projection protruding from the surfaces thereof, and the projection is provided with a screw hole.

7. The synchronizing mechanism according to claim 6, wherein the protrusions of the main shaft, the bar-shaped bodies and the rotating plate are fixed with a fixing device, the fixing device comprises a female fixing seat and a male fixing seat, the main shaft, each bar-shaped body and the rotating plate respectively correspond to one female fixing seat or one male fixing seat, the male fixing seats and the female fixing seats are connected with each other and can rotate, and the male fixing seats and the female fixing seats are arranged at intervals.

8. The synchronizing mechanism according to claim 7, wherein the female and male fixed seats each include a seat base, a lower retainer provided at a bottom of the seat base for receiving the protrusion, and a screw hole penetrating the seat base and communicating with the lower retainer, the female fixed seat further includes a lower retainer, an upper retainer, and an arc-shaped groove between the upper and lower retainers, respectively extending from two longitudinal ends of the seat base, and the male fixed seat further includes an arc-shaped block extending from two longitudinal ends of the seat base and rotating in cooperation with the arc-shaped groove.

9. The synchronizing mechanism according to claim 8, wherein the arc-shaped slots on both longitudinal sides of the female stationary block and the arc-shaped blocks on both longitudinal sides of the male stationary block are formed to extend in opposite directions in a transverse direction; the fixed male seat or the fixed female seat assembled on the rotating plate at the outermost side is only provided with one arc-shaped block or arc-shaped groove.

10. The synchronizing mechanism according to claim 9, wherein the fixing groove has a shaft body at one side thereof and the first partition at the other side thereof, the shaft body having a fixing hole formed at a position corresponding to the first partition, and the folding hinge further includes a reinforcing bar inserted into the fixing hole.

11. A folding display device, comprising a synchronization mechanism according to any one of claims 1 to 10, and further comprising a pitch device hinged to said main shaft.