CN214465708U - Caster brake adjustable office chair support - Google Patents

The utility model discloses an office chair support with adjustable caster brake, the caster group comprises a support shaft which is rotatably installed in the open hole, two ends of the rotation shaft extend outwards and are provided with rollers, an upper press block and a lower press block which can move up and down are sleeved outside the support shaft at intervals, an elastic component is connected between the upper press block and the lower press block, the lower end of the lower press block is provided with a speed reducing press block which can contact and press the outer surface of the rotation shaft, the longitudinal rod is also provided with an adjusting device which can simultaneously drive all the upper press blocks to move up and down, the upper press block can be driven to move downwards through the arrangement of the adjusting device, the downward force of the speed reducing press block on the lower press block is increased through the elastic component, thereby increasing the friction with the rotation shaft, the braking force is larger, in addition, the adjusting device can drive all the upper press blocks to move, and further does not need to be operated one by one, meanwhile, the force of the brake can be adjusted according to the requirements of a user, and the use requirements of people are met.

Technical Field

The utility model relates to a support truckle technical field especially relates to a truckle brake adjustable office chair support.

Background

Present mobilizable study chair, a plurality of truckles are generally installed to office chair, the truckle does not possess the brake function for a few, office staff is at the office process, the chair removes at will, can not keep the stability of position of sitting, though the truckle has the brake function for a few, but need operate the brake part on the truckle one by one with the hand and just can let the truckle brake, thereby guarantee that the chair is stable, and during the brake, the truckle is dead in the lock completely, can not adjust the size of brake dynamics according to user's demand, thereby can not satisfy people's user demand.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a truckle brake adjustable office chair support, solve above-mentioned background art's problem.

In order to achieve the above purpose, the utility model adopts the following scheme: a caster brake adjustable office chair support comprises a support body, the support body comprises a longitudinal rod and a plurality of transverse rods arranged at the lower end of the longitudinal rod along a circumferential array, the outer end of the transverse rod is provided with a caster set, the lower side of the outer end of the transverse rod is provided with an opening, the caster set is arranged in the opening and comprises a support shaft which is rotatably arranged in the opening, a fixed cylinder which is horizontally arranged is arranged at the lower end of the supporting shaft, a rotating shaft is rotatably arranged in the fixed cylinder, two ends of the rotating shaft extend outwards and are provided with rollers, an upper pressing block and a lower pressing block which can move up and down are sleeved outside the supporting shaft at intervals, an elastic component is connected between the upper pressing block and the lower pressing block, the lower end of the lower pressing block is provided with a speed-reducing pressing block which can contact and press the surface of the outer side of the rotating shaft, and the longitudinal rod is also provided with an adjusting device which can simultaneously drive all the upper pressing blocks to move up and down.

Further, adjusting device is including setting up cavity in the longitudinal rod longitudinal rotation installs the center pin in the cavity the center pin outer wall is equipped with the external screw thread the center pin overcoat be equipped with can with external screw thread screw-thread fit's rotatory piece lower extreme rotates installs the connecting block articulated on the connecting block have with the connecting rod that the transverse rod quantity is the same the length direction of following the transverse rod in the transverse rod slides and has the removal rectangular, the other end of connecting rod with it is articulated mutually to remove rectangular, it is cylindrical and the upper end is the inclined plane structure to go up the briquetting, remove rectangular one end roof pressure and be in the inclined plane is structural the breach is seted up to the last rotatory piece department of corresponding of longitudinal rod.

Further, a bearing is arranged at the inner end of the opening, and the supporting shaft is rotatably installed on the bearing.

Furthermore, the elastic part is a spring, and the spring is sleeved on the supporting shaft.

Furthermore, a plurality of anti-slip strips are arranged on the outer wall of the rotating block.

Furthermore, two deceleration pressing blocks are symmetrically arranged, and the surface in contact with the rotating shaft is an arc surface.

Further, a wear-resistant layer is coated on the arc-shaped surface.

Furthermore, a seat is arranged at the upper end of the longitudinal rod.

To sum up, the utility model discloses for its beneficial effect of prior art is: at first, be pressing the axis of rotation through the speed reduction briquetting, thereby can play the purpose of friction brake, and simultaneously, through adjusting device's setting, can drive the briquetting and move down, through elastomeric element, the decurrent dynamics of speed reduction briquetting on the briquetting under the increase, thereby the friction of increase and axis of rotation, thereby the brake dynamics is bigger, adjusting device can drive the whole briquetting of going up in addition and move, and then need not operation one by one, the dynamics of brake can be adjusted according to user's demand simultaneously, satisfy people's user demand.

Drawings

Fig. 1 is a schematic perspective view of the bracket body of the utility model after being mounted with a chair seat.

Fig. 2 is a schematic view of a half-section of the bracket body of the present invention.

Fig. 3 is an enlarged schematic view of a portion a of fig. 2 according to the present invention.

Fig. 4 is a schematic structural view of the caster assembly of the present invention.

Description of reference numerals: 1. a stent body; 2. a longitudinal rod; 3. a transverse bar; 4. a caster set; 5. opening a hole; 6. a support shaft; 7. a fixed cylinder; 8. a rotating shaft; 9. a roller; 10. pressing the blocks; 11. pressing the block; 12. an elastic member; 13. a deceleration briquetting; 21. a cavity; 22. a central shaft; 23. an external thread; 24. rotating the block; 25. connecting blocks; 26. a connecting rod; 27. moving the strip; 28. a notch; 31. a bearing; 81. a chair seat.

Detailed Description

The following detailed description provides many different embodiments or examples for implementing the invention. Of course, these are merely embodiments or examples and are not intended to be limiting. In addition, repeated reference numbers, such as repeated numbers and/or letters, may be used in various embodiments. These iterations are for simplicity and clarity of describing the present invention and are not intended to represent a particular relationship between the various embodiments and/or configurations discussed.

Furthermore, spatially relative terms, such as "below" … "," below "," inside-out "," above "," upper "and the like, may be used herein to facilitate describing one element or feature's relationship to another element or feature during use or operation of the device, and may include different orientations of the device during use or operation of the device as illustrated in the figures. The devices may be rotated 90 degrees or other orientations from different orientations and the spatially relative descriptors used therein should be interpreted as such and are not to be construed as limiting the invention, and the terms "first" and "second" are used for descriptive purposes only and are not intended to indicate or imply relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In combination with the basic principles and main features of the present invention and the advantages of the present invention as shown and described above, those skilled in the art should understand that the present invention is not limited by the above embodiments, and only the description in the above embodiments and the description illustrates the principles of the present invention without departing from the spirit and scope of the present invention, the present invention can also have various changes and improvements, and these changes and improvements all fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.