Wheel brake structure

Abstract

The utility model relates to the technical field of study chairs, in particular to a wheel brake structure which comprises a chair seat and a brake mechanism, and the brake mechanism is arranged on one side of the chair seat. The brake mechanism comprises a brake support, a brake shaft, a transmission piece, an anti-falling clamping block, a locking supporting pipe, a guide sleeve, a lifting sling, a brake seat, a translation groove, a rotating wheel cover, a rotating shaft, a rolling wheel, a limiting groove, a brake bottom column, a spiral spring and a brake pedal, and the brake support is arranged in the center of one side of the outer wall of the chair seat; a brake shaft is installed in the center of the end face of the brake support in an inserted mode, a brake shifting piece is arranged on one side of the outer wall of the brake shaft, and one end of the brake shaft penetrates through the brake support and is provided with a brake pedal. According to the wheel brake structure, the brake function can be rapidly achieved by treading the brake pedal; and the brake bottom columns are inserted into the limiting grooves, so that the situation that the wheels fail to brake is effectively avoided, and the safety of brake use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of learning chairs, in particular to a wheel brake structure. Background Art

[0002] A study chair is a chair specially designed to provide a comfortable learning environment; it is mainly used for study, work and long-term sitting activities to provide correct support and posture to avoid fatigue and discomfort; the study chair has good support and adjustability, which can enable users to maintain a correct sitting posture, reduce pressure on the spine and other parts of the body, and improve comfort and productivity; moreover, the study chair is usually equipped with a comfortable seat cushion and backrest, which helps to alleviate the discomfort caused by long-term sitting and reduce pressure on the waist, neck and other parts; during the use of the study chair, wheels are needed to move it and the wheel brake structure is used for braking.

[0003] The wheel brake structure in the prior art is simple in structure and usually adopts the method of friction between the brake pad and the wheel for stopping. The braking effect is not good and it is easy to affect the braking effect, thus having certain risks in use. Therefore, it is necessary to design a wheel brake structure. Utility Model Content

[0004] The problem solved by the utility model is to provide a wheel brake structure, which can quickly realize the braking function by stepping on the brake pedal; by inserting the brake bottom column into the inside of the limit groove, the brake failure of the wheel is effectively avoided, and the safety of brake use is improved.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A wheel brake structure comprises a seat and a brake mechanism, wherein the brake mechanism is arranged on one side of the seat;

[0007] The brake mechanism includes a brake support, a brake shaft, a transmission plate, an anti-slip block, a locking branch pipe, a guide sleeve, a lifting rope, a brake seat, a translation groove, a rotating wheel cover, a rotating shaft, a rolling wheel, a limiting groove, a brake bottom column, a coil spring and a brake pedal. The brake support is arranged at the center of one side of the outer wall of the seat, and the brake shaft is installed in the center of the end face of the brake support. A brake paddle is arranged on one side of the outer wall of the brake shaft. A brake pedal is arranged on one end of the brake shaft passing through the brake support. The transmission plate is installed in the inner center of the brake support through a rotating pin, and the brake paddle on one side of the outer wall of the brake shaft is located above the transmission plate. A locking branch pipe is installed at one end of the brake support, and a guide sleeve is installed on the outer side of the bottom of the locking branch pipe through a threaded connection. The lifting rope is installed in the inner center of the locking branch pipe and the guide sleeve, and anti-slip blocks are fixedly installed on the top and bottom of the lifting rope. The anti-slip block at the top of the lifting rope is clamped with the other side of the transmission plate, and the bottom outer side of the guide sleeve is sleeved with a rotating wheel cover, and a rotating shaft is fixedly installed in the center of the inner side of the rotating wheel cover, and rolling wheels are inserted and installed on both sides of the outer wall of the rotating shaft, and a plurality of limiting grooves are provided on the end face of the inner wall of the rolling wheel, a brake seat is provided in the center of one side of the bottom of the rotating wheel cover, and the anti-slip block at the bottom of the lifting rope is clamped with the brake seat, a translation groove is provided in the center of the end face of the brake seat, and the length of the translation groove is twice the diameter of the rotating shaft, and the rotating shaft passes through the translation groove, a brake bottom column is fixedly installed on the bottom end face of the brake seat, and the outer wall of the brake bottom column is fit-connected with the inner wall of one of the limiting grooves, a spring support groove is provided in the center of the top end face of the brake seat, and a coil spring is fixedly installed inside the spring support groove, and one end of the top of the coil spring is fit-connected with the inner wall of the rotating wheel cover.

[0008] Preferably, anti-slip stripes are provided on both sides of the top end surface of the brake pedal.

[0009] Preferably, the top end face of the locking branch pipe is provided with a first anti-slip plate, and the bottom end face of the first anti-slip plate is fit-connected to the inner wall of the seat, the bottom end face of the guide sleeve is fixedly mounted with a second anti-slip plate, and the top end face of the second anti-slip plate is fit-connected to the inner wall end face of the rotating wheel cover.

[0010] Preferably, an external thread groove is provided on the end face of the bottom outer wall of the locking branch pipe, and an internal thread groove is provided on the top side of the inner wall of the guide sleeve, and the external thread groove and the internal thread groove are twistedly connected.

[0011] The beneficial effects of the utility model are as follows: the wheel brake structure has a simple structure and is easy to operate; during use, the brake mechanism can have a fast and firm braking function; by stepping on the brake pedal, the braking function can be quickly achieved, and the braking efficiency is high; moreover, the braking is firm, and by inserting the brake bottom column into the inside of the limit groove, the braking failure of the wheel can be effectively avoided, and the safety of the brake use is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a first overall structural schematic diagram of the utility model;

[0013] Figure 2 It is a second overall structural schematic diagram of the utility model;

[0014] Figure 3 It is an overall top view of the utility model;

[0015] Figure 4 It is an overall bottom view of the utility model;

[0016] Figure 5 for Figure 4 Schematic cross-sectional view of AA in the figure;

[0017] Figure 6 for Figure 4 A schematic cross-sectional view of the middle BB;

[0018] Figure 7 for Figure 4 Schematic cross-sectional view of CC.

[0019] Legend:

[0020] 1. Seat; 2. Brake mechanism; 21. Brake support; 22. Brake shaft; 23. Transmission plate; 24. Anti-slip block; 25. Locking branch pipe; 26. Guide sleeve; 27. Lifting rope; 28. Brake seat; 29. ​​Translation slot; 210. Rotating wheel cover; 211. Rotating shaft; 212. Rolling wheel; 213. Limiting slot; 214. Brake bottom column; 215. Coil spring; 216. Brake pedal. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Specific examples are given below.

[0023] See also Figure 1 to Figure 7 , a wheel brake structure, comprising a seat 1 and a brake mechanism 2, wherein the brake mechanism 2 is arranged on one side of the seat 1;

[0024] The brake mechanism 2 includes a brake support 21, a brake shaft 22, a transmission plate 23, an anti-slip block 24, a locking branch pipe 25, a guide sleeve 26, a lifting rope 27, a brake seat 28, a translation groove 29, a rotating wheel cover 210, a rotating shaft 211, a rolling wheel 212, a limiting groove 213, a brake bottom column 214, a coil spring 215 and a brake pedal 216. The brake support 21 is arranged at the center of one side of the outer wall of the seat 1, and the brake shaft 22 is plugged and installed in the center of the end face of the brake support 21, and a brake paddle is arranged on one side of the outer wall of the brake shaft 22. One end of the brake shaft 22 passes through the brake support 21 and is provided with a brake pedal 216. The transmission plate 23 is installed in the center of the brake support 21 through a rotating pin, and the brake paddle on one side of the outer wall of the brake shaft 22 is located above the transmission plate 23. A locking branch pipe 25 is plugged and installed at one end of the brake support 21, and a guide sleeve 26 is installed on the outer side of the bottom of the locking branch pipe 25 through a threaded connection. A lifting sling 27 is plugged and installed in the center of the locking branch pipe 25 and the guide sleeve 26, and the top and bottom of the lifting sling 27 are fixedly installed with anti-dropping The anti-drop block 24 at the top of the lifting sling 27 is snapped with the other side of the transmission plate 23, and a rotating wheel cover 210 is sleeved and installed on the outer side of the bottom of the guide sleeve 26. A rotating shaft 211 is fixedly inserted and installed in the center of the rotating wheel cover 210, and rolling wheels 212 are inserted and installed on both sides of the outer wall of the rotating shaft 211. A plurality of limiting grooves 213 are provided on the inner wall end surface of the rolling wheel 212. A brake seat 28 is provided in the center of one side of the bottom of the rotating wheel cover 210, and the anti-drop block 24 at the bottom of the lifting sling 27 is snapped with the brake seat 28. A translation groove 29 is opened in the center of the end surface of the brake seat 28, and the length of the translation groove 29 is twice the diameter of the rotating shaft 211, and the rotating shaft 211 passes through the translation groove 29. A brake bottom column 214 is fixedly installed on the bottom end surface of the brake seat 28, and the outer wall of the brake bottom column 214 is fit-connected with the inner wall of one of the limiting grooves 213. A spring support groove is opened in the center of the top end surface of the brake seat 28, and a coil spring 215 is fixedly installed inside the spring support groove, and one end of the top of the coil spring 215 is fit-connected with the inner wall of the rotating wheel cover 210.

[0025] Anti-skid stripes are provided on both sides of the top end surface of the brake pedal 216 to improve the anti-skid effect.

[0026] A first anti-slip plate is provided on the top end face of the locking branch pipe 25, and the bottom end face of the first anti-slip plate is fitted and connected to the inner wall of the seat 1, and a second anti-slip plate is fixedly installed on the bottom end face of the guide sleeve 26, and the top end face of the second anti-slip plate is fitted and connected to the inner wall end face of the rotating wheel cover 210; an external thread groove is provided on the bottom outer wall end face of the locking branch pipe 25, and an internal thread groove is provided on the top side of the inner wall of the guide sleeve 26, and the external thread groove and the internal thread groove are twisted and connected; the convenience and tightness of the connection are improved; the rotating wheel cover 210 can be limited at the bottom of the seat 1, and at the same time, it is also convenient for the rotating wheel cover 210 to rotate on the outside of the guide sleeve 26.

[0027] Working principle: The brake can be applied through the brake mechanism 2 on one side of the seat 1. On both sides of the rotating wheel cover 210, the rolling wheels 212 rotate outside the rotating shaft 211. Since the locking branch pipe 25 and the guide sleeve 26 are fixedly connected, the rotating wheel cover 210 is installed on the outside of the guide sleeve 26, so that the rotating wheel cover 210 can rotate on the outside of the guide sleeve 26, so as to facilitate the adjustment of the moving direction. At this time, the rotating shaft 211 is at the bottom side of the translation groove 29, the brake bottom column 214 is located outside the limit groove 213, and the coil spring 215 inside the spring support groove is in a normal state; when the brake on the outside of the brake shaft 22 is pressed When the car pedal 216 is pressed, the brake pedal 216 drives the brake shaft 22 to rotate in the center of the brake support 21, so that the brake paddle on the outside of the brake shaft 22 rotates downward, so that the brake paddle drives the transmission plate 23 to rotate through the rotating pin. According to the balance of force, the end of the transmission plate 23 close to the brake shaft 22 moves downward, and the end of the transmission plate 23 away from the brake shaft 22 moves upward. The transmission plate 23 can pull the anti-slip block 24 and the lifting sling 27 upward. At the bottom of the lifting sling 27, the anti-slip block 24 installed on the bottom side of the brake seat 28 can be pulled. After the end of the brake seat 28 close to the anti-slip block 24 is pulled upward, The brake seat 28 is rotated on the outside of the rotating shaft 211, causing the end of the brake seat 28 away from the anti-slip block 24 to move downward, so that the inner wall of the rotating wheel cover 210 is separated from the end of the brake seat 28 away from the anti-slip block 24, so that the spiral spring 215 inside the spring support groove is stretched, and the rotating shaft 211 is located at the inner top of the translation groove 29, and the brake bottom column 214 at the bottom of the brake seat 28 is driven to move to the inside of the limiting groove 213 at the inner bottom of the rolling wheel 212, so that the rotation of the rolling wheel 212 outside the rotating shaft 211 is limited by the brake bottom column 214, and the braking effect is achieved; the brake pedal 216 is returned to After being straightened, the transmission plate 23 loses the pressure of the brake paddle, and the spiral spring 215 stretched on the inner wall of the rotating wheel cover 210 shrinks and resets, thereby pulling the brake seat 28 away from the end of the anti-slip block 24 and moving it upward, while driving the brake bottom column 214 to move out from the inside of the limit groove 213, and making the rotating shaft 211 at the inner bottom of the translation groove 29, and the brake seat 28 close to the end of the anti-slip block 24 moves downward, and the transmission plate 23 is pulled close to the end of the anti-slip block 24 through the anti-slip block 24 and the pulling rope 27, so that the transmission plate 23 returns to the straight position, thereby facilitating the rolling wheel 212 to rotate on the outside of the rotating shaft 211.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wheel brake structure, characterized in that: It comprises a seat (1) and a brake mechanism (2), wherein the brake mechanism (2) is arranged on one side of the seat (1); The brake mechanism (2) comprises a brake support (21), a brake shaft (22), a transmission plate (23), an anti-slip block (24), a locking branch pipe (25), a guide sleeve (26), a lifting rope (27), a brake seat (28), a translation groove (29), a rotating wheel cover (210), a rotating shaft (211), a rolling wheel (212), a limiting groove (213), a brake bottom column (214), a coil spring (215) and a brake pedal (216). The brake support (21) is arranged at the center of one side of the outer wall of the seat (1), and the brake shaft (22) is plugged and installed at the center of the end face of the brake support (21). The outer wall of the brake shaft (22) is A brake paddle is arranged on the side, one end of the brake shaft (22) passes through the brake support (21) and is provided with a brake pedal (216), the transmission plate (23) is installed in the inner center of the brake support (21) through a rotating pin, and the brake paddle on one side of the outer wall of the brake shaft (22) is located above the transmission plate (23), one end of the brake support (21) is plugged and installed with a locking branch pipe (25), and the bottom outer side of the locking branch pipe (25) is installed with a guide sleeve (26) through a threaded connection, and the inner center of the locking branch pipe (25) and the guide sleeve (26) is plugged and installed with a lifting rope (27), and the top and bottom of the lifting rope (27) are fixedly installed. An anti-drop block (24) is installed, the anti-drop block (24) at the top of the lifting sling (27) is clamped with the other side of the transmission plate (23), a rotating wheel cover (210) is sleeved and installed on the outer side of the bottom of the guide sleeve (26), a rotating shaft (211) is fixedly plugged and installed in the center of the rotating wheel cover (210), and rolling wheels (212) are plugged and installed on both sides of the outer wall of the rotating shaft (211), and a plurality of limiting grooves (213) are provided on the inner wall end surface of the rolling wheel (212), a brake seat (28) is arranged in the center of one side of the bottom of the rotating wheel cover (210), and the anti-drop block (24) at the bottom of the lifting sling (27) is connected to the brake seat (28) is clamped, a translation groove (29) is opened in the center of the end face of the brake seat (28), and the length of the translation groove (29) is twice the diameter of the rotating shaft (211), and the rotating shaft (211) passes through the translation groove (29), a brake base column (214) is fixedly installed on the bottom end face of the brake seat (28), and the outer wall of the brake base column (214) is closely connected with the inner wall of one of the limiting grooves (213), a spring support groove is opened in the center of the top end face of the brake seat (28), and a coil spring (215) is fixedly installed inside the spring support groove, and the top end of the coil spring (215) is closely connected with the inner wall of the rotating wheel cover (210).

2. A wheel brake structure according to claim 1, characterized in that: Anti-slip stripes are arranged on both sides of the top end surface of the brake pedal (216).

3. A wheel brake structure according to claim 1, characterized in that: The top end surface of the locking branch pipe (25) is provided with a first anti-slip plate, and the bottom end surface of the first anti-slip plate is fitted and connected to the inner wall of the seat (1); the bottom end surface of the guide sleeve (26) is fixedly mounted with a second anti-slip plate, and the top end surface of the second anti-slip plate is fitted and connected to the inner wall end surface of the rotating wheel cover (210).

4. A wheel brake structure according to claim 3, characterized in that: An external thread groove is provided on the bottom outer wall end face of the locking branch pipe (25), and an internal thread groove is provided on the top inner wall of the guide sleeve (26), and the external thread groove and the internal thread groove are twistedly connected.

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