CN214465708U

CN214465708U - Caster brake adjustable office chair support

Info

Publication number: CN214465708U
Application number: CN202120223997.2U
Authority: CN
Inventors: 刘大海
Original assignee: Zhongshan Chamcen Hardware & Casters Factory
Current assignee: Zhongshan Chamcen Hardware & Casters Factory
Priority date: 2021-01-26
Filing date: 2021-01-26
Publication date: 2021-10-22
Anticipated expiration: 2031-01-26

Abstract

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.

Description

Caster brake adjustable office chair support

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.

The invention is further described in the following figures and embodiments: as shown in fig. 1 to 4, the office chair support with adjustable caster brakes comprises a support body 1, wherein the support body 1 comprises a longitudinal rod 2 and a plurality of transverse rods 3 arranged at the lower end of the longitudinal rod 2 along a circumferential array, the outer ends of the transverse rods 3 are provided with caster sets 4, the lower sides of the outer ends of the transverse rods 3 are provided with openings 5, the caster sets 4 are arranged in the openings 5, the caster sets 4 comprise support shafts 6 rotatably arranged in the openings 5, the lower ends of the support shafts 6 are provided with horizontally arranged fixed cylinders 7, rotating shafts 8 are rotatably arranged in the fixed cylinders 7, two ends of the rotating shafts 8 extend outwards and are provided with rollers 9, upper press blocks 10 and lower press blocks 11 capable of moving up and down are sleeved outside the support shafts 6 at intervals, and elastic parts 12 are connected between the upper press blocks 10 and the lower press blocks 11, elastic component 12 is the spring, the spring housing is established on back shaft 6 the lower extreme of briquetting 11 is equipped with the speed reduction briquetting 13 that can contact the roof pressure and press 8 outside surfaces of axis of rotation, still be equipped with the adjusting device that can drive briquetting 10 on whole simultaneously and reciprocate on longitudinal rod 2, at first, press the axis of rotation through the speed reduction briquetting to can play the purpose of friction brake, simultaneously, through adjusting device's setting, can drive briquetting 10 and remove downwards, through elastic component 12, the decurrent dynamics of speed reduction briquetting 13 on the briquetting 10 under the increase, thereby increase and the friction of axis of rotation 8, thereby the brake dynamics is bigger, adjusting device can drive whole last briquetting 10 and remove in addition, and then need not operation one by one, can adjust the dynamics of brake according to user's demand simultaneously, satisfy people's user demand.

Referring to fig. 2 to 4, the adjusting device includes a cavity 21 disposed in the longitudinal rod 2, a central shaft 22 is longitudinally rotatably mounted in the cavity 21, an external thread 23 is disposed on an outer wall of the central shaft 22, a rotating block 24 capable of being in threaded fit with the external thread 23 is sleeved outside the central shaft 22, a plurality of anti-slip strips are disposed on an outer wall of the rotating block 24, a connecting block 25 is rotatably mounted at a lower end of the rotating block 24, connecting rods 26 having the same number as that of the transverse rods 3 are hinged to the connecting block 25, a moving strip 27 is slidably disposed in the transverse rods 3 along a length direction of the transverse rods 3, the other end of the connecting rod 26 is hinged to the moving strip 27, the upper pressing block 10 is cylindrical and has an inclined surface structure at an upper end, one end of the moving strip 27 is pressed against the inclined surface structure, a notch 28 is formed in the longitudinal rod 2 corresponding to the rotating block 24, during adjustment, the rotating block 24 is rotated to drive the connecting block 25 to move downwards, the connecting rod 26 drives the moving strip 27 to move outwards, the inclined surface structure of the upper pressing block 10 is pressed by the lower side of the outer end of the moving strip 27, the lower side of the outer end of the moving strip 27 is preferably an inclined surface, the upper pressing block 10 moves downwards, the elastic component 12 is compressed, the downward force of the lower pressing block 11 is increased, and the rotating shaft 8 is pressed by the speed reducing pressing block 13 more strongly, so that the braking effect is better and more stable; in addition, when the moving strip 27 is separated from the upper pad 10, the elastic member 12 applies little force to the lower pad 11, and the braking effect is not good.

The utility model discloses in 5 the inner of trompil is equipped with bearing 31, back shaft 6 rotates to be installed on the bearing 31 to make truckle group 4 more smooth and easy rotation.

Referring to fig. 4, two deceleration pressing blocks 13 are symmetrically arranged, the surface of each deceleration pressing block contacting with the rotating shaft 8 is an arc surface, and a wear-resistant layer is coated on the arc surfaces, so that the service lives of the deceleration pressing blocks 13 and the rotating shaft 8 can be prolonged.

In the utility model, a chair seat 81 is arranged at the upper end of the longitudinal rod 2.

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.

Claims

1. The utility model provides a truckle brake adjustable office chair support, including support body (1), support body (1) is in including vertical pole (2) and along the setting of circumference array a plurality of transverse bar (3) of vertical pole (2) lower extreme transverse bar (3) outer end is equipped with truckle group (4), its characterized in that: an opening (5) is arranged at the lower side of the outer end of the transverse rod (3), the caster wheel group (4) is arranged in the opening (5), the caster group (4) comprises a support shaft (6) which is rotatably arranged in the open pore (5), a fixed cylinder (7) which is horizontally arranged is arranged at the lower end of the supporting shaft (6), a rotating shaft (8) is rotatably arranged in the fixed cylinder (7), two ends of the rotating shaft (8) extend outwards and are provided with rollers (9), an upper pressing block (10) and a lower pressing block (11) which can move up and down are sleeved outside the supporting shaft (6) at intervals, an elastic component (12) is connected between the upper pressing block (10) and the lower pressing block (11), a speed-reducing pressing block (13) which can contact and press the outer side surface of the rotating shaft (8) is arranged at the lower end of the lower pressing block (11), and the longitudinal rod (2) is also provided with an adjusting device which can simultaneously drive all the upper pressing blocks (10) to move up and down.

2. The caster brake-adjustable office chair support as claimed in claim 1, wherein: the adjusting device comprises a cavity (21) arranged in the longitudinal rod (2), a central shaft (22) is longitudinally installed in the cavity (21) in a rotating mode, external threads (23) are arranged on the outer wall of the central shaft (22), a rotating block (24) capable of being in threaded fit with the external threads (23) is sleeved outside the central shaft (22), a connecting block (25) is rotatably installed at the lower end of the rotating block (24), connecting rods (26) with the same number as the transverse rods (3) are hinged to the connecting block (25), a moving strip (27) slides in the transverse rods (3) along the length direction of the transverse rods (3), the other end of each connecting rod (26) is hinged to the moving strip (27), the upper pressing block (10) is cylindrical, the upper end of each pressing block is of an inclined plane structure, and one end of the moving strip (27) is pressed on the inclined plane structure, a gap (28) is arranged on the longitudinal rod (2) corresponding to the rotating block (24).

3. The caster brake-adjustable office chair support as claimed in claim 1, wherein: and a bearing (31) is arranged at the inner end of the open hole (5), and the support shaft (6) is rotatably arranged on the bearing (31).

4. The caster brake-adjustable office chair support as claimed in claim 1, wherein: the elastic part (12) is a spring, and the spring is sleeved on the support shaft (6).

5. The caster brake-adjustable office chair support as claimed in claim 2, wherein: a plurality of anti-slip strips are arranged on the outer wall of the rotating block (24).

6. The caster brake-adjustable office chair support as claimed in claim 1, wherein: two deceleration pressing blocks (13) are symmetrically arranged, and the surface contacting with the rotating shaft (8) is an arc surface.

7. The caster brake-adjustable office chair support as claimed in claim 6, wherein: and a wear-resistant layer is coated on the arc-shaped surface.

8. The caster brake adjustable office chair support as claimed in any one of claims 1 to 7, wherein: a chair seat (81) is arranged at the upper end of the longitudinal rod (2).