A Hidden Brake Structure for an Elderly Assistive Walker

Abstract

In view of the drawback that the brake structure on the walker is exposed in the prior art, which poses a safety hazard, the present invention provides a concealed brake structure for an elderly assistive walker, belonging to the technical field of elderly assistive walkers. It includes a connecting pipe, a wheel frame, and wheels. A brake slider, a brake wire, and a fixing block are arranged inside the connecting pipe. An adjusting block is slidably connected to the fixing block, and an adjusting mechanism for adjusting the position of the adjusting block is connected to the fixing block. The brake slider is slidably arranged inside the connecting pipe, and the fixing block is arranged inside the brake slider; the brake wire includes an outer tube and an inner wire. The outer tube is attached to the inner end face of the brake slider, and the inner wire passes through the brake slider and is connected to the adjusting block. A return spring is arranged between the brake slider and the fixing block. The present invention is a concealed brake mechanism, which has better safety performance, a longer service life, and can adjust the braking effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of elderly assistive walkers, and particularly relates to a concealed brake structure for an elderly assistive walker. Background Art

[0002] A walker is a device that, through the support of the instrument, enables the elderly or patients with inconvenient legs to take walks and move around like normal people. For ease of use, wheels are installed at the bottom of some walkers, which is more convenient for the elderly to use. And to improve safety performance, a brake mechanism for braking the wheels is provided on the walker. The existing brake structures generally use brake pads to press against the wheels for braking, and the brake pads are basically exposed. This exposed brake structure may injure users and there are certain safety hazards. There is also a brake structure on the market that improves the wheels, and the brake structure is arranged inside the wheels. This kind of structure is complex and will increase the production cost of the wheels. Summary of the Invention

[0003] Aiming at the drawback that the brake structure on the existing walker is exposed and has safety hazards, the present invention provides a concealed brake structure for an elderly assistive walker. The brake structure is hidden in the connecting pipe, will not injure users, is very safe, and has a simple overall structure. There is no need to modify the wheels, and the manufacturing cost is relatively low.

[0004] The invention object of the present invention is achieved through the following technical solutions: A concealed brake structure for an elderly assistive walker, including a connecting pipe. One end of the connecting pipe is fixedly provided with a wheel frame, and a wheel that can only rotate is installed on the wheel frame. A brake slider and a brake wire for braking the wheel are arranged in the connecting pipe. A fixing block is also fixedly arranged in the connecting pipe. An adjusting block that can only slide along the length direction of the connecting pipe is slidably connected to the fixing block. An adjusting mechanism for adjusting the position of the adjusting block is connected to the fixing block. The brake slider is a hollow structure. The brake slider is slidably arranged in the connecting pipe and the outer end of the brake slider can extend out of the connecting pipe and press against the wheel. The fixing block is arranged inside the brake slider. The brake wire includes an outer tube and an inner wire. The outer tube is attached to the inner end face of the brake slider. The inner wire passes through the brake slider and is connected to the adjusting block. A return spring is arranged between the brake slider and the fixing block. In the above solution, the brake part is installed in the connecting pipe, which is a concealed structure, making it safer to use. There is no need to modify the wheels, and the manufacturing cost is relatively low. The position of the adjusting block can be adjusted through the adjusting mechanism, so as to adjust the braking force, that is, the braking effect can be adjusted. When the brake slider wears, the position of the adjusting block can also be adjusted through the adjusting mechanism to extend the service life.

[0005] Preferably, the fixing block is a square frame structure and the adjusting block is arranged inside the fixing block.

[0006] Preferably, each of the fixed block and the brake slider is provided with a first through hole, and the two first through holes are located on the same straight line, and the inner wire passes through the two first through holes.

[0007] Preferably, a limiting hole coaxially arranged with the first through hole is provided on the inner end surface of the brake slider, the diameter of the limiting hole is larger than the diameter of the first through hole, a stepped surface is provided between the first through hole and the limiting hole, and the outer tube of the brake wire is embedded in the limiting hole and abuts against the stepped surface.

[0008] Preferably, a positioning ring in the shape of an annular structure coaxially arranged with the first through hole is fixedly provided on each of the inner side surface of the brake slider and the outer side surface of the fixed block, the inner wire passes through the positioning ring, and both ends of the return spring are respectively sleeved outside the two positioning rings. The setting of the positioning ring facilitates the positioning and installation of the return spring.

[0009] Preferably, the adjusting mechanism includes a second through hole provided on the fixed block, an adjusting rod that can only slide along the second through hole is sleeved in the second through hole, one end of the adjusting rod is connected to the adjusting block, and an adjusting knob that can only rotate is screwed to the other end. The adjusting knob can only rotate. By rotating the adjusting knob, the adjusting rod will be driven to move, and then the adjusting block will be driven to move, so as to realize the adjustment of the position of the adjusting block.

[0010] Preferably, a clamping groove is provided on the adjusting block, the adjusting rod is a hexagonal bolt, and the adjusting rod is divided into a nut, a cylindrical section, and a stud section that are fixedly connected in sequence. The nut is embedded in the clamping groove and both sides of the nut are respectively in contact with the two side walls of the clamping groove. The cylindrical section is sleeved in the second through hole, and the stud section is screwed to the adjusting knob. Such a setting facilitates the installation between the adjusting rod and the adjusting block, and only needs to embed the nut of the adjusting rod into the clamping groove.

[0011] Preferably, an inner sleeve is provided between the connecting pipe and the brake slider. The brake slider is sleeved inside the inner sleeve, and the inner sleeve is sleeved inside the connecting pipe and fixedly connected to the connecting pipe; the fixed block is fixedly connected to the inner sleeve. The setting of the inner sleeve can play a guiding role for the brake slider and also separate the outer wall of the brake slider from the inner wall of the connecting pipe to avoid abrasion between the brake slider and the connecting pipe.

[0012] Preferably, a limiting through groove is provided on the wheel carrier, and a part of the adjusting knob passes through the limiting through groove.

[0013] Preferably, the brake slider includes a frame body with a frame structure. On one side of the frame body facing the wheel, there is an installation groove. A brake block is detachably connected in the installation groove. The brake block and the brake slider are detachably connected by setting screws. On the side of the brake block facing the wheel, there are several anti-slip protrusions. With such a brake slider set, it is actually the brake block that rubs against the wheel. When the brake block is worn to a greater extent, only one brake block needs to be replaced, and the maintenance cost is lower.

[0014] Preferably, the sides of all the anti-slip protrusions facing away from the brake block are located on the same arc surface. When the brake slider is pressed against the wheel, all the anti-slip protrusions are pressed against the wheel. With such a setting, the anti-slip protrusions have a better braking effect on the wheel. A block is fixedly provided at the outer end of the inner wire of the brake wire. A clamping groove is provided on the adjusting block. The block is embedded in the clamping groove. Such a setting can facilitate the connection between the inner wire and the adjusting block.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention is a hidden brake mechanism, which has better safety performance, a longer service life, and can adjust the braking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of the present invention;

[0017] Figure 2 is a partial cross-sectional view of the present invention;

[0018] Figure 3 is a schematic connection structure diagram between the fixed block, the adjusting block and the adjusting mechanism;

[0019] Figure 4 is a schematic connection structure diagram of the fixed block and the adjusting block;

[0020] Figure 5 is a perspective view of the brake slider;

[0021] Figure 6 is a perspective view of the brake block;

[0022] Figure 7 is a perspective view of the adjusting rod;

[0023] Figure 8 is a schematic structural diagram of the present invention installed on an elderly walking aid;

[0024] Markings in the figure: 1. Wheel, 2. Connecting pipe, 3. Brake slider, 4. Fixed block, 5. Adjusting block, 6. Adjusting mechanism, 7. First through hole, 8. Limiting hole, 9. Outer pipe, 10. Inner wire, 11. Return spring, 12. Positioning ring, 13. Clamping block, 14. Clamping groove, 15. Second through hole, 16. Adjusting rod, 17. Adjusting knob, 18. Card slot, 19. Nut, 20. Cylindrical section, 21. Stud section, 22. Inner sleeve, 24. Wheel frame, 25. Limiting through groove, 26. Frame body, 27. Installation groove, 28. Brake block, 29. Anti-slip protrusion, 30. Frame of the vehicle, 31. Brake handle. Detailed implementation mode

[0025] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings:

[0026] Embodiment 1

[0027] As Figures 1 - 7 shown, a hidden brake structure for an elderly walking aid includes a connecting pipe 2. One end of the connecting pipe 2 is fixedly provided with a wheel frame 24, and a wheel 1 that can only rotate is installed on the wheel frame 24. A brake slider 3 and a brake wire for braking the wheel 1 are arranged in the connecting pipe 2. A fixed block 4 with a square frame structure is also fixedly arranged in the connecting pipe 2. An adjusting block 5 that can only slide along the length direction of the connecting pipe 2 is slidably connected to the inner side of the fixed block 4. An adjusting mechanism 6 for adjusting the position of the adjusting block 5 is connected to the fixed block 4. The brake slider 3 is a hollow structure. The brake slider 3 is slidably arranged in the connecting pipe 2, and the outer end of the brake slider 3 can extend out of the connecting pipe 2 and press against the wheel 1. The fixed block 4 is arranged inside the brake slider 3. Each of the fixed block 4 and the brake slider 3 is provided with a first through hole 7, and the two first through holes 7 are on the same straight line. The inner end face of the brake slider 3 is provided with a limiting hole 8 coaxially arranged with the first through hole 7. The diameter of the limiting hole 8 is larger than that of the first through hole 7, and a step surface is arranged between the first through hole 7 and the limiting hole 8.

[0028] The brake wire includes an outer pipe 9 and an inner wire 10. The outer pipe 9 is attached to the inner end face of the brake slider 3. The inner wire 10 passes through the two first through holes 7 and is connected to the adjusting block 5. A return spring 11 is arranged between the brake slider 3 and the fixed block 4. The outer pipe 9 of the brake wire is embedded in the limiting hole 8 and attached to the step surface. A circular ring-shaped positioning ring 12 coaxially arranged with the first through hole 7 is fixedly arranged on the inner side surface of the brake slider 3 and the outer side surface of the fixed block 4 respectively. The inner wire 10 passes through the positioning ring 12, and both ends of the return spring 11 are sleeved outside the two positioning rings 12 respectively. A clamping block 13 is fixedly arranged at the outer end of the inner wire 10 of the brake wire. A clamping groove 14 is arranged on the adjusting block 5, and the clamping block 13 is embedded in the clamping groove 14.

[0029] The adjusting mechanism 6 includes a second through hole 15 provided on the fixed block 4. A regulating rod 16 that can only slide along the second through hole 15 is sleeved in the second through hole 15. One end of the regulating rod 16 is connected to the adjusting block 5, and the other end is screwed with an adjusting knob 17 that can only rotate. A clamping groove 18 is provided on the adjusting block 5. The regulating rod 16 is a hexagonal bolt, which is divided into a nut 19, a cylindrical section 20, and a stud section 21 that are fixedly connected in sequence. The nut 19 is embedded in the clamping groove 18, and both sides of the nut 19 are in contact with the two side walls of the clamping groove 18 respectively. The cylindrical section 20 is sleeved in the second through hole 15, and the stud section 21 is screwed with the adjusting knob 17.

[0030] An inner sleeve 22 is provided between the connecting pipe 2 and the brake slider 3. The brake slider 3 is sleeved inside the inner sleeve 22. The inner sleeve 22 is sleeved inside the connecting pipe 2 and fixedly connected to the connecting pipe 2. The fixed block 4 is fixedly connected to the inner sleeve 22. A limiting through groove 25 is provided on the wheel carrier 24, and a part of the adjusting knob 17 passes through the limiting through groove 25.

[0031] The brake slider 3 includes a frame body 26 with a frame structure. An installation groove 27 is provided on one side of the frame body 26 facing the wheel 1. A brake block 28 is detachably connected in the installation groove 27. The brake block 28 and the frame body 26 are detachably connected by setting screws. A plurality of anti-slip protrusions 29 are provided on the side of the brake block 28 facing the wheel 1. The sides of all the anti-slip protrusions 29 facing away from the brake block 28 are located on the same arc surface. When the brake slider 3 is pressed against the wheel 1, all the anti-slip protrusions 29 are pressed against the wheel 1.

[0032] As Figure 8As shown, when the present invention is installed on an elderly person's walking aid, the connecting pipe 2 is a part of the walking aid frame 30. The brake wire is connected to the brake handle 31 on the walking aid, and the brake wire is routed inside the connecting pipe 2 and the frame 30. In the normal state of the walking aid, the brake slider 3 is separated from the wheel 1. When it is necessary to brake the wheel 1, press the brake handle 31. The brake handle 31 drives the brake wire. Since the other end of the inner wire 10 is connected to the adjusting block 5, and the position of the adjusting block 5 on the fixed block 4 can only be adjusted by the adjusting knob 17, and the fixed block 4 is fixedly arranged, the inner wire 10 cannot pull the inner wire 10. The outer tube 9 will push the brake slider 3 towards the wheel 1 side, so that the brake slider 3 presses tightly against the wheel 1, thereby realizing the braking of the wheel 1. Release the brake handle 31, and under the action of the return spring 11, the brake slider 3 will return to the initial position. By rotating the adjusting knob 17, the position of the adjusting block 5 on the fixed block 4 can be adjusted. Since the relative position between the outer tube 9 of the brake wire and the inner wire 10 only depends on the pressing degree of the brake handle 31, adjusting the position of the adjusting block 5 on the fixed block 4 is to adjust the position of the brake slider 3. When the brake slider 3 is partially worn, resulting in poor adhesion between the brake slider 3 and the wheel 1 during braking and a decrease in braking performance, only need to rotate the adjusting knob 17 in the normal state of the walking aid to control the adjusting block 5 to move towards the wheel 1 side, that is, drive the brake slider 3 to move towards the wheel 1. Press the brake handle 31, and drive the brake slider 3 to move the same stroke, and still be able to make the brake slider 3 closely adhere to the wheel 1, realizing a better braking effect, thereby extending the service life of the brake block 28 on the brake slider 3. Similarly, the braking force can also be adjusted by rotating the adjusting knob 17, so as to adjust the braking effect.

[0033] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A hidden braking structure for an elderly walking aid, characterized in that, It includes a connecting pipe (2). One end of the connecting pipe (2) is fixedly provided with a wheel frame (24). A wheel (1) that can only rotate is installed on the wheel frame (24). A brake slider (3) and a brake wire for braking the wheel (1) are arranged in the connecting pipe (2). A fixing block (4) is also fixedly arranged in the connecting pipe (2). An adjusting block (5) that can only slide along the length direction of the connecting pipe (2) is slidably connected to the fixing block (4). An adjusting mechanism (6) for adjusting the position of the adjusting block (5) is connected to the fixing block (4). The brake slider (3) is of a hollow structure. The brake slider (3) is slidably arranged in the connecting pipe (2), and the outer end of the brake slider (3) can extend out of the connecting pipe (2) and press against the wheel (1). The fixing block (4) is arranged inside the brake slider (3). The brake wire includes an outer tube (9) and an inner wire (10). The outer tube (9) is attached to the inner end face of the brake slider (3). The inner wire (10) passes through the brake slider (3) and is connected to the adjusting block (5). A return spring (11) is arranged between the brake slider (3) and the fixing block (4).

2. The hidden brake structure for an elderly assistive walker according to claim 1, characterized in that, The fixing block (4) is of a square frame structure and the adjusting block (5) is arranged inside the fixing block (4). Each of the fixing block (4) and the brake slider (3) is provided with a first through hole (7). The two first through holes (7) are on the same straight line. The inner wire (10) passes through the two first through holes (7).

3. The hidden braking structure for an elderly walking aid according to claim 2, characterized in that, A positioning ring (12) in the shape of a circular ring coaxial with the first through hole (7) is fixedly arranged on the inner side face of the brake slider (3) and the outer side face of the fixing block (4). The inner wire (10) passes through the positioning ring (12). The two ends of the return spring (11) are respectively sleeved outside the two positioning rings (12).

4. The hidden braking structure for an elderly assistive walker according to claim 3, characterized in that, A limiting hole (8) coaxial with the first through hole (7) is arranged on the inner end face of the brake slider (3). The diameter of the limiting hole (8) is larger than that of the first through hole (7). A stepped surface is arranged between the first through hole (7) and the limiting hole (8). The outer tube (9) of the brake wire is embedded in the limiting hole (8) and attached to the stepped surface.

5. The hidden braking structure for an elderly person's walking aid according to claim 2, characterized in that, The adjusting mechanism (6) includes a second through hole (15) arranged on the fixing block (4). A regulating rod (16) that can only slide along the second through hole (15) is sleeved in the second through hole (15). One end of the regulating rod (16) is connected to the adjusting block (5), and the other end is screwed with an adjusting knob (17) that can only rotate.

6. The hidden braking structure for an elderly walking aid according to claim 5, characterized in that, A clamping groove (18) is arranged on the adjusting block (5). The regulating rod (16) is a hexagonal bolt. The regulating rod (16) is divided into a nut (19), a cylindrical section (20), and a stud section (21) that are fixedly connected in sequence. The nut (19) is embedded in the clamping groove (18), and both sides of the nut (19) are respectively attached to the two side walls of the clamping groove (18). The cylindrical section (20) is sleeved in the second through hole (15). The stud section (21) is screwed with the adjusting knob (17).

7. The hidden brake structure for the elderly walking aid according to claim 6, characterized in that, An inner sleeve (22) is provided between the connecting pipe (2) and the brake slider (3). The brake slider (3) is sleeved inside the inner sleeve (22), and the inner sleeve (22) is sleeved inside the connecting pipe (2) and fixedly connected to the connecting pipe (2); the fixing block (4) is fixedly connected to the inner sleeve (22).

8. The hidden braking structure for an elderly walking aid according to claim 7, characterized in that, A limiting through groove (25) is provided on the wheel carrier (24), and a part of the adjusting knob (17) passes through the limiting through groove (25).

9. The hidden braking structure for an elderly walking aid according to claim 2, characterized in that, The brake slider (3) includes a frame body (26) of a frame structure. An installation groove (27) is provided on one side of the frame body (26) facing the wheel (1). A brake block (28) is detachably connected in the installation groove (27). A plurality of anti-slip protrusions (29) are provided on the side of the brake block (28) facing the wheel (1).

10. The hidden braking structure for an elderly walking aid according to claim 9, characterized in that, The sides of all the anti-slip protrusions (29) facing away from the brake block (28) are located on the same arc surface. When the brake slider (3) is pressed against the wheel (1), all the anti-slip protrusions (29) are pressed against the wheel (1); a clamping block (13) is fixedly provided at the outer end of the inner wire (10) of the brake wire, and a clamping groove (14) is provided on the adjusting block (5), and the clamping block (13) is embedded in the clamping groove (14).

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