Continuous brake self-locking handle assembly and wheelchair thereof

Abstract

The utility model provides a continuous brake self-locking handle assembly and a wheelchair thereof, and relates to the technical field of wheelchair equipment, the continuous brake self-locking handle assembly comprises a continuous brake handle seat, the continuous brake handle seat is rotatably connected with a brake wrench, and the brake wrench is rotatably connected with a self-locking plate; a clamping column is arranged on the continuous brake handle seat, a clamping position is arranged at the front end of the self-locking plate, and the clamping position and the clamping column are used correspondingly; after the brake wrench rotates upwards, the self-locking piece rotates in the opposite direction, the clamping position is clamped in the clamping column to form supporting, and therefore the brake wrench is abutted against, and downward rotation resetting of the brake wrench is limited. The self-locking wheel chair has the advantages that the self-locking plate is matched with the brake handle seat, so that the brake assembly is in a brake state and is fixed, the brake assembly does not need to be clenched all the time, and the wheel chair is effectively prevented from sliding; the supporting pipe is rotationally connected with the movable end of the mechanical adjusting rod, the supporting frame is hinged to the fixed end of the mechanical adjusting rod, the switch is pressed to control stretching or retracting of a piston rod of the air cylinder, and therefore the inclination angle of the backrest frame is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of wheelchair equipment, in particular to a combined brake self-locking handle assembly and a wheelchair thereof. Background Art

[0002] A wheelchair is a chair equipped with wheels to help replace walking, and is divided into electric and manual folding wheelchairs. It is an important mobile tool for the wounded, sick, and disabled for home rehabilitation, turnover transportation, medical treatment, and outdoor activities. The wheelchair not only meets the transportation needs of the physically disabled and the mobility-impaired, but more importantly, it facilitates the movement and care of the sick by their families, enabling the sick to exercise their bodies and participate in social activities with the help of the wheelchair.

[0003] In the prior art, in the technical solution of a Chinese patent document (Publication No.: CN211356337U, Patent Name: A Multifunctional Wheelchair Handle), it is disclosed that "a handle body, a brake bracket is sleeved on the right side of the handle body, and the brake bracket includes: a brake handle hinged to the lower left side of the brake bracket and a steel sleeve limit seat on the lower right side; a brake mechanism on the right side, and the brake mechanism includes: brake clamp hands on both sides, a brake base at the bottom, and a spring between the brake clamp hands and the brake base, and the brake clamp hands are hinged to the brake base; a locking steel cable connecting the handle body and the brake mechanism, the left end of the locking steel cable is connected to the brake handle, a steel cable limit cap is provided at the right end of the locking steel cable, and the right side of the locking steel cable passes through the inside of the brake clamp hand and is limited by the steel cable limit cap; a steel cable sheath sleeved outside the locking steel cable, and steel sleeves are provided at both ends of the steel cable sheath, the left steel sleeve is embedded in the steel sleeve limit seat, and the right steel sleeve abuts against the side of the brake clamp hand."

[0004] Combined with the description content and the attached drawings of this patent document, the wheelchair brake is achieved by pressing the brake handle on the handle body, so that the brake clamp hands clamp the wheelchair hub to achieve braking. When the brake handle is no longer pressed, the brake clamp hands bounce open to release the braking state. Among them, the wheelchair is prone to sliding when parked, and continuous manual pressing is not conducive to long-term parking of the wheelchair, and the use is not convenient enough. Summary of the Utility Model

[0005] The utility model overcomes the shortcomings in the prior art and provides a combined brake self-locking handle assembly and a wheelchair thereof, which can prevent the wheelchair from sliding when parked and is conducive to long-term parking of the wheelchair.

[0006] In order to solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] A combined brake and self-locking handle assembly includes a combined brake handle base, on which a brake wrench is rotatably connected, and a self-locking piece is rotatably connected to the brake wrench; the combined brake handle base is provided with a clamping post, and the front end of the self-locking piece is provided with a clamping position corresponding to the clamping post; when the brake wrench rotates upward, the self-locking piece rotates in the opposite direction, so that the clamping position is clamped in the clamping post to form a support, thereby holding the brake wrench against it and restricting the brake wrench from rotating downward to reset.

[0008] Furthermore, the clamping post has a hollow position, the brake assembly includes a brake wrench, the brake wrench is provided with a placement position for placing a brake wire, one end of the brake wire is arranged in the placement position, and the other end of the brake wire extends out through the hollow position.

[0009] Furthermore, one end of the brake wrench is provided with a column body, and the other end of the brake wrench is provided with a wrench.

[0010] Furthermore, the combined brake handle base includes an upper cover and a lower seat, the upper cover and the lower seat are connected to form a plug hole, the handle is arranged on the side of the plug hole, a concave position is arranged inside the lower seat, the column body is rotatably arranged in the concave position, a slot is arranged at the lower end of the lower seat, the self-locking piece is slidably arranged in the slot, and the clamping post is arranged at the end of the slot.

[0011] Furthermore, fixing ports are arranged at both ends of the upper cover, fixing holes are arranged at both ends of the lower seat, and the fixing ports correspond to the fixing holes.

[0012] A wheelchair includes a combined brake and self-locking handle assembly according to any one of the above.

[0013] Furthermore, it includes a backrest frame and a handle. The backrest frame is provided with a support tube, both sides of the support tube bend upward to form hand push tubes, and the hand push tubes pass through the plug hole and are inserted into the handle.

[0014] Furthermore, the backrest frame is hinged with a seat cushion frame, a support frame is arranged at the rear end of the seat cushion frame, a rear frame is arranged at the lower end of the support frame, the front end of the rear frame is fixedly connected to the front end of the seat cushion frame, a rear wheel is arranged at the rear end of the rear frame, a brake member is arranged on the rear wheel, the brake wire is connected to the brake member, and the brake member is rotatably connected to the rear frame.

[0015] Furthermore, a switch is arranged above the handle, the switch is connected with a mechanical adjusting rod, the support tube is rotatably connected with the movable end of the mechanical adjusting rod, and the support frame is hinged with the fixed end of the mechanical adjusting rod.

[0016] Furthermore, an adjusting tube is arranged on the support tube, an adjusting rod is slidably arranged in the adjusting tube, a headrest is arranged at the end of the adjusting rod, several adjusting holes are arranged on the adjusting tube, and an adjusting post is arranged on the adjusting rod, and the adjusting post corresponds to the adjusting holes.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] By cooperating the self-locking piece with the connecting brake handle seat, the brake assembly is in a braking state and fixed, without constantly squeezing the brake assembly, which can effectively prevent the wheelchair from accidentally sliding; the support tube is rotatably connected to the movable end of the mechanical adjusting rod, and the support frame is hinged to the fixed end of the mechanical adjusting rod. Press the switch to control the extension or retraction of the piston rod of the cylinder, thereby adjusting the tilt angle of the backrest frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are used to provide a further understanding of the present invention, and together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0020] Figure 1 is the general view of the connecting brake self-locking handle assembly and the wheelchair according to the embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of the connecting brake handle seat, brake wrench and self-locking piece according to the embodiment of the present invention;

[0022] Figure 3 is a cross-section of the connecting brake handle seat, brake wrench, brake wire and self-locking piece according to the embodiment of the present invention Figure 1 ;

[0023] Figure 4 is a cross-section of the connecting brake handle seat, brake wrench, brake wire and self-locking piece according to the embodiment of the present invention Figure 2 ;

[0024] Figure 5 is a schematic diagram of the brake wrench and self-locking piece according to the embodiment of the present invention Figure 1 ;

[0025] Figure 6 is a schematic diagram of the brake wrench and self-locking piece according to the embodiment of the present invention Figure 2 ;

[0026] Figure 7 is a schematic diagram of the lower seat according to the embodiment of the present invention Figure 1 ;

[0027] Figure 8 is a schematic diagram of the lower seat according to the embodiment of the present invention Figure 2 ;

[0028] Figure 9 is a schematic diagram of the upper cover according to the embodiment of the present invention;

[0029] Figure 10 is a schematic diagram of the wheelchair according to the embodiment of the present invention;

[0030] Figure 11 is a schematic diagram of the adjusting rod according to the embodiment of the present invention

[0031] Figure 12 It is a schematic diagram of the adjusting pipe in an embodiment of the present utility model.

[0032] In the figure: 1 - connecting brake handle seat, 101 - upper cover, 1011 - fixing port, 102 - lower seat, 1021 - clamping post, 1022 - concave position, 1023 - slot, 1024 - fixing hole, 103 - inserting hole, 2 - handle, 3 - brake wrench, 301 - placing position, 302 - column body, 303 - wrench, 304 - step position, 4 - self-locking piece, 401 - clamping position, 5 - brake wire, 6 - backrest frame, 601 - support pipe, 602 - hand-pushing pipe, 7 - headrest, 8 - seat cushion frame, 9 - support frame, 10 - rear frame, 11 - rear wheel, 12 - brake component, 13 - mechanical adjusting rod, 14 - adjusting pipe, 1401 - adjusting hole, 15 - adjusting rod, 1501 - adjusting column. Specific embodiments

[0033] The following is a description of the preferred embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model and are not used to limit the present utility model.

[0034] As Figure 1 shown, a connecting brake self-locking handle assembly includes a connecting brake handle seat 1. A brake wrench 3 is rotatably connected to the connecting brake handle seat 1, and a self-locking piece 4 is rotatably connected to the brake wrench 3. The connecting brake handle seat 1 is provided with a clamping post 1021, and the front end of the self-locking piece 4 is provided with a clamping position 401. The clamping position 401 is used corresponding to the clamping post 1021. When the brake wrench 3 rotates upward, the self-locking piece 4 rotates in the opposite direction, so that the clamping position 401 is clamped in the clamping post 1021 to form a support, thereby holding the brake wrench 3 and restricting the brake wrench 3 from rotating downward to reset. Through the cooperation of the self-locking piece 4 and the connecting brake handle seat 1, the brake assembly is in a braking state and is fixed, and there is no need to keep squeezing the brake assembly all the time, which can effectively prevent the wheelchair from accidentally sliding.

[0035] Specifically, as Figures 2 to 9 shown, the clamping post 1021 has a hollow position. The brake assembly includes a brake wrench 3. The brake wrench 3 is provided with a placing position 301 for placing the brake wire 5. One end of the brake wire 5 is arranged on the placing position 301, and the other end of the brake wire 5 extends outwards through the hollow position. As Figure 3 shown, the placing position 301 is used in cooperation with the brake wire 5. The round head end of the brake wire 5 is arranged at the end of the placing position 301, and the wire end of the brake wire 5 extends outwards through the hollow position.

[0036] One end of the brake wrench 3 is provided with a cylinder 302, and the other end of the brake wrench 3 is provided with a wrench 303. The continuous brake handle seat 1 includes an upper cover 101 and a lower seat 102. The upper cover 101 and the lower seat 102 are connected to form a socket hole 103. The handle 2 is arranged on the side of the socket hole 103. A concave position 1022 is arranged inside the lower seat 102. The cylinder 302 is rotatably arranged on the concave position 1022. A slot 1023 is arranged at the lower end of the lower seat 102. The self-locking piece 4 is slidably arranged on the slot 1023. A clamping post 1021 is arranged at the end of the slot 1023. As Figure 2 shown, the brake wrench 3 is provided with a step position 304. When the brake wrench 3 is installed on the continuous brake handle seat 1, the step position 304 further limits the moving range of the brake wrench 3.

[0037] As Figure 3 shown, when the brake wrench 3 moves upward in the direction of the arrow and then the self-locking piece 4 is rotated downward in the direction of the arrow, the clamping position 401 is clamped with the clamping post 1021, so that the continuous brake self-locking handle assembly is in the braking state and fixed. As Figure 4 shown, only need to rotate the self-locking piece 4 upward in the direction of the arrow to make the clamping position 401 disengage from the clamping post 1021, and the brake wrench 3 is rotated downward in the direction of the arrow to return to its original position, then the continuous brake self-locking handle assembly can be unlocked from the braking state, which is convenient and fast.

[0038] Both ends of the upper cover 101 are provided with fixing ports 1011, and both ends of the lower seat 102 are provided with fixing holes 1024. The fixing ports 1011 and the fixing holes 1024 correspond to each other. Internal threads are arranged inside the fixing ports 1011. By using bolts to pass through the fixing holes 1024 and threadedly connect with the fixing ports 1011, the upper cover 101 and the lower seat 102 can be fixed together to realize the installation of the continuous brake handle seat 1.

[0039] As Figures 10 to 12 shown, a wheelchair includes a backrest frame 6 and a handle 2. The backrest frame 6 is provided with a support pipe 601. Both sides of the support pipe 601 are bent upward to form handrail pipes 602. The handrail pipes 602 pass through the socket hole 103 and are inserted into the handle 2. The process of installing the continuous brake self-locking handle assembly on the handrail pipe 602 is as follows: first insert the handle 2 into the handrail pipe 602, then place the lower seat 102 at the front end of the handle 2, and then place the upper cover 101 above the lower seat 102, and fixedly connect the upper cover 101 and the lower seat 102 with bolts, so that the brake handle seat 1 is fixed on the handrail pipe 602.

[0040] The backrest frame 6 is hinged with a seat cushion frame 8. A support frame 9 is arranged at the rear end of the seat cushion frame 8. A rear frame 10 is arranged at the lower end of the support frame 9. The front end of the rear frame 10 is fixedly connected to the front end of the seat cushion frame 8. A rear wheel 11 is arranged at the rear end of the rear frame 10. A braking member 12 is arranged on the rear wheel 11. The brake wire 5 is connected to the braking member 12. The braking member 12 is rotatably connected to the rear frame 10. By moving the brake wrench 3 upward to drive the brake wire 5, the braking member 12 is driven to rotate, so that the braking member 12 abuts against the rear wheel 11 to realize the braking operation.

[0041] A switch is arranged above the handle 2. The switch is connected with a mechanical adjusting rod 13. The support tube 601 is rotatably connected to the movable end of the mechanical adjusting rod 13. The support frame 9 is hinged to the fixed end of the mechanical adjusting rod 13. The mechanical adjusting rod 13 is a cylinder. Pressing the switch controls the extension or retraction of the piston rod of the cylinder, so as to adjust the inclination angle of the backrest frame 6.

[0042] An adjusting tube 14 is arranged on the support tube 601. An adjusting rod 15 is slidably arranged in the adjusting tube 14. A headrest 7 is arranged at the end of the adjusting rod 15. The adjusting tube 14 is provided with a plurality of adjusting holes 1401. The adjusting rod 15 is provided with an adjusting column 1501. The adjusting column 1501 corresponds to the adjusting hole 1401. The adjusting column 1501 is connected with an elastic sheet. The elastic sheet is located inside the adjusting rod 15 and has an outward pushing force on the adjusting column 1501. When it is necessary to adjust the height of the headrest 7, press the adjusting column 1501 to compress and deform the elastic sheet, and then pull the adjusting rod 15 up and down according to the user's needs. After adjustment, the adjusting column 1501 pops out under the elastic action of the elastic sheet, so that the adjusting column 1501 is clamped with the corresponding adjusting hole 1401, thereby fixing the height of the headrest 7.

[0043] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A combined brake and self-locking handle assembly, characterized in that, It includes a combined brake handle base (1), a brake wrench (3) is rotatably connected to the combined brake handle base (1), and a self-locking piece (4) is rotatably connected to the brake wrench (3); the combined brake handle base (1) is provided with a clamping post (1021), the front end of the self-locking piece (4) is provided with a clamping position (401), and the clamping position (401) corresponds to the clamping post (1021) for use; when the brake wrench (3) rotates upward, the self-locking piece (4) rotates in the opposite direction, so that the clamping position (401) is clamped in the clamping post (1021) to form a support, thereby resisting the brake wrench (3) and restricting the brake wrench (3) from rotating downward to reset; The clamping post (1021) has a hollow position, the brake assembly includes a brake wrench (3), the brake wrench (3) is provided with a placement position (301) for placing a brake wire (5), one end of the brake wire (5) is arranged on the placement position (301), and the other end of the brake wire (5) extends out through the hollow position.

2. The combined brake and self-locking handle assembly according to claim 1, wherein, One end of the brake wrench (3) is provided with a column body (302), and the other end of the brake wrench (3) is provided with a wrench (303).

3. The integrated self-locking handle assembly with continuous braking according to claim 2, characterized in that, The combined brake handle base (1) includes an upper cover (101) and a lower seat (102), the upper cover (101) and the lower seat (102) are connected to form a plug-in hole (103), the handle (2) is arranged on the side of the plug-in hole (103), a concave position (1022) is arranged inside the lower seat (102), the column body (302) is rotatably arranged on the concave position (1022), a slot (1023) is arranged at the lower end of the lower seat (102), the self-locking piece (4) is slidably arranged on the slot (1023), and the clamping post (1021) is arranged at the end of the slot (1023).

4. The integrated self-locking handle assembly with continuous braking according to claim 3, characterized in that, Both ends of the upper cover (101) are provided with fixing ports (1011), both ends of the lower seat (102) are provided with fixing holes (1024), and the fixing ports (1011) correspond to the fixing holes (1024).

5. A wheelchair, characterized in that, It includes a combined brake self-locking handle assembly according to any one of claims 1 to 4.

6. A wheelchair according to claim 5, wherein, It includes a backrest frame (6) and a handle (2), the backrest frame (6) is provided with a support tube (601), both sides of the support tube (601) bend upward to form hand push tubes (602), and the hand push tubes (602) pass through the plug-in hole (103) and are plugged on the handle (2).

7. A wheelchair according to claim 6, characterized in that, The backrest frame (6) is hinged with a seat cushion frame (8), a support frame (9) is arranged at the rear end of the seat cushion frame (8), a rear frame (10) is arranged at the lower end of the support frame (9), the front end of the rear frame (10) is fixedly connected to the front end of the seat cushion frame (8), a rear wheel (11) is arranged at the rear end of the rear frame (10), a brake part (12) is arranged on the rear wheel (11), the brake wire (5) is connected to the brake part (12), and the brake part (12) is rotatably connected to the rear frame (10).

8. A wheelchair according to claim 7, wherein A switch is arranged above the handle (2), the switch is connected to a mechanical adjustment rod (13), the support tube (601) is rotatably connected to the movable end of the mechanical adjustment rod (13), and the support frame (9) is hinged to the fixed end of the mechanical adjustment rod (13).

9. A wheelchair according to claim 8, characterized in that, An adjustment tube (14) is provided on the support tube (601). An adjustment rod (15) is slidably arranged on the adjustment tube (14). A headrest (7) is arranged at the end of the adjustment rod (15). The adjustment tube (14) is provided with a plurality of adjustment holes (1401), and the adjustment rod (15) is provided with adjustment columns (1501). The adjustment columns (1501) correspond to the adjustment holes (1401).

Images