CN214967890U

CN214967890U - Wheelchair with double wheels braked synchronously

Info

Publication number: CN214967890U
Application number: CN202120844590.1U
Authority: CN
Inventors: 王尔琪; 王世军; 陈振中
Original assignee: Zhongjin Medical Devices Taizhou Co ltd
Current assignee: Zhongjin Medical Devices Taizhou Co ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-12-03
Anticipated expiration: 2031-04-22

Abstract

The utility model relates to a wheelchair of synchronous braking of double round, include the frame, install the wheel in the frame both sides respectively and be used for braking the brake equipment of wheel, the wheel is rotationally installed on the stay tube of frame, brake equipment includes brake lever, slide bar and control lever subassembly, control lever subassembly bottom articulates in the stay tube, slide bar one end rotatable coupling on the control lever subassembly and with the pin joint interval distribution of control lever subassembly, the slide bar other end is connected with the brake lever, the brake lever transverse arrangement is in the outside of two wheels, be equipped with the stopper that links firmly on the frame between brake lever and the control lever subassembly, slide bar and stopper sliding connection, the control lever subassembly rotates and advances and drives the slide bar and remove and then drive brake lever and wheel frictional contact. The utility model has the main purpose of providing a wheelchair which is operated by the user, synchronously braked by two wheels and synchronously braked by two wheels with high safety.

Description

Wheelchair with double wheels braked synchronously

Technical Field

The utility model relates to a wheelchair, in particular to a wheelchair with two wheels braked synchronously.

Background

The wheelchair is a medical special device, the function setting service target of the wheelchair is a specific crowd or the old, especially for people with mobility disabilities, the wheelchair is not only a travel tool, but also can go and participate in social activities by the wheelchair. At present, although the existing wheelchairs on the market solve the traveling problem, the braking mode of the wheelchairs generally adopts the separate braking of the left wheel and the right wheel, and a user needs to control the wheels on the two sides to brake simultaneously in the driving process, but when the user suddenly encounters an emergency and needs to decelerate, the wheelchair often has an unreachable response and causes a rollover accident or even a more serious accident, so that the braking device of the wheelchair needs to be further improved.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a double-wheel synchronous braking wheelchair which can synchronously brake left and right wheels, is convenient for a user to operate by oneself and has high safety.

In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:

the utility model provides a wheelchair of synchronous braking of double round, includes the frame, installs the wheel in the frame both sides respectively and is used for the brake gear of braking wheel, the wheel rotationally installs on the stay tube of frame, brake gear includes brake lever, slide bar and control lever subassembly, the control lever subassembly bottom articulates in the stay tube, slide bar one end rotatable coupling on the control lever subassembly and with the pin joint interval distribution of control lever subassembly, the slide bar other end is connected with the brake lever, the brake lever transverse arrangement is in the outside of two wheels, be equipped with the stopper that links firmly on the frame between brake lever and the control lever subassembly, slide bar and stopper sliding connection, the control lever subassembly rotates and then drives the slide bar and remove and then drive brake lever and wheel frictional contact.

Furthermore, the control rod assembly comprises control rods which are respectively arranged on the left side and the right side of the wheelchair and a linkage rod which is connected between the two control rods, a mounting seat is arranged on the linkage rod, and one end of the sliding rod is rotatably connected onto the mounting seat.

Furthermore, an elastic piece is arranged on the outer side of the sliding rod, one end of the elastic piece abuts against the brake rod, and the other end of the elastic piece abuts against the limiting block.

Furthermore, the elastic part is a spring sleeved on the outer side of the sliding rod.

Furthermore, the end parts of the control rods are provided with pedal pedals.

Furthermore, friction grains are arranged at two ends of the brake rod, and when the brake rod is in contact with the wheel, the brake of the wheel is realized through the contact friction between the friction grains and the wheel.

Furthermore, a stop block is arranged on the control rod, and when the control rod rotates for a certain angle, the stop block abuts against the supporting tube.

Compared with the prior art, the beneficial effects of the utility model reside in that: in the utility model, the sliding rod is driven by the rotating control rod to realize the control of the brake rod, and the two control rods are connected through the linkage rod to form a whole body, so that a user only needs to step on one of the pedals, and can control the brake rod through the control rod connected with the brake rod to simultaneously perform friction braking on the two wheels, and the two wheels are synchronously braked, thereby greatly improving the braking safety and stability, avoiding the situations of side turning and the like; the wheelchair brake device has the advantages of ingenious structural design, flexible and convenient operation, and the whole design accords with human engineering mechanics, and is helpful for timely reaction and wheelchair brake when a user meets an emergency.

Drawings

FIG. 1 is a perspective view of a dual-wheel synchronous braking wheelchair of the present invention;

FIG. 2 is a front view of a dual wheel synchronous braking wheelchair of the present invention;

FIG. 3 is a top view of a dual wheel synchronous braking wheelchair of the present invention;

FIG. 4 is a cross-sectional view taken along A-A of FIG. 3;

wherein, 1, a frame; 2. a brake lever; 21. rubbing the lines; 3. a limiting block; 4. a slide bar; 5. supporting a tube; 6. a wheel; 7. a control lever assembly; 71. a control lever; 72. a linkage rod; 73. a mounting seat; 74. a stopper; 8. an elastic member.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

It should be noted that, in the description of the technical solutions of the present invention, some directional words, such as "front", "rear", "upper", "lower", "top", "bottom", "inner", "outer", etc., used for clearly describing the technical features of the present invention are all in terms of the orientation of the drawings of the present invention.

Examples

As shown in fig. 1, 2, 3 and 4, the dual wheel synchronous braking wheelchair of the present embodiment comprises a frame 1, wheels 6 respectively mounted on both sides of the frame 1, and a braking device for braking the wheels 6, wherein the wheels 6 are rotatably mounted on a support tube 5 of the frame 1, and specifically, the rotatable mounting manner of the wheels 6 is the prior art. The brake device comprises a brake rod 2, a sliding rod 4 and a control rod assembly 7, wherein the bottom of the control rod assembly 7 is hinged to the support tube 5, and the hinged mode adopts the prior art. 4 one end rotatable coupling of slide bar 4 on the control lever subassembly 7 and with the pin joint interval distribution of control lever subassembly 7, the 4 other ends of slide bar are connected with

brake lever

2, 2 transverse arrangement in the outside of two wheels 6 of brake lever, be equipped with stopper 3 that links firmly on frame 1 between brake lever 2 and the control lever subassembly 7,

slide bar

4 and 3 sliding connection of stopper, specifically, be equipped with the hole that link up on the stopper 3, slide bar 4 wears to establish in this hole, stopper 3 plays support and limiting displacement, prevent that slide bar 4 from rocking or squinting. The control rod assembly 7 rotates to drive the sliding rod 4 to move so as to drive the brake rod 2 to be in friction contact with the wheel 6.

Specifically, in the present embodiment, the control rod assembly 7 includes control rods 71 respectively disposed at the left and right sides of the wheelchair and a linkage rod 72 connected between the two control rods 71, the two control rods 71 are respectively hinged to the support tubes 5 corresponding to the two sides, the specific hinge manner adopts a torsion spring connection, one end of the torsion spring abuts against the control rods 71, and the other end abuts against the support tubes 5, so as to facilitate the return of the control rods 71. The two control rods 71 are connected into a whole through a linkage rod 72. The linkage rod 72 is provided with a mounting seat 73, and one end of the sliding rod 4 is rotatably connected to the mounting seat 73; the specific manner of rotatable connection is known in the art. The installation position of the sliding rod 4 is a certain distance away from the hinged point of the control rod 71, when the control rod 71 rotates around the hinged point, the linkage rod 72 also rotates along with the control rod, so that the installation seat 73 on the linkage rod 72 also rotates along with the linkage rod, the sliding rod 4 is driven to move in the horizontal direction, and the sliding rod 4 moves so as to drive the brake rod 2 connected with the sliding rod to move and brake by contacting with the wheel 6. In this embodiment, the end of the control rod 71 is provided with a foot pedal, so that the user can drive the control rod 71 to rotate only by stepping on the foot pedal, and the control mode is simple and convenient.

In order to ensure that the brake rod 2 can move more stably, the two sliding rods 4 are arranged in the brake rod 2 and are respectively connected to the positions, close to the two ends, of the brake rod 2, and the sliding rods 4 are fixedly connected with the brake rod 2 through bolts, so that the structure is simple and reliable. An elastic part 8 is arranged on the outer side of the sliding rod 4, one end of the elastic part 8 abuts against the brake rod 2, and the other end of the elastic part abuts against the limiting block 3. Specifically, the elastic member 8 is a spring fitted around the outside of the slide bar 4. When the control rod 71 is rotated to move the sliding rod 4 away from the brake rod 2, the brake rod 2 can be driven to move by overcoming the elastic force of the spring, and the spring plays a role in buffering and damping; when the control rod 71 is released, the resilience of the spring can assist the sliding rod 4 to move back and thus assist the brake lever 2 to return. Meanwhile, in order to improve the braking effect, friction grains 21 are arranged at two ends of the brake rod 2 in the embodiment, the friction grains 21 are distributed along the axial direction of the brake rod 2, and when the brake rod 2 is in contact with the wheel 6, the wheel 6 is braked by the contact friction of the friction grains 21 and the wheel 6.

In this embodiment, the lever 71 is provided with a stopper 74, and when the lever 71 is rotated by a predetermined angle, the stopper 74 abuts against the support pipe 5. Specifically, when the control rod 71 rotates a certain angle, so that the brake rod 2 contacts with the wheel 6 to rub for braking, the stopper 74 abuts against the support tube 5, preventing the control rod 71 from continuing to rotate, and further preventing the brake rod 2 from moving over to damage the wheel 6.

The utility model discloses a wheelchair of synchronous braking of double round drives slide bar 4 through rotating control lever 71 and realizes the control to brake lever 2, and two control levers 71 are linked together through gangbar 72 and are formed wholly, and the user only need step on one of them foot and step on the footboard, can control brake lever 2 through the control lever 71 that links to each other and carry out friction braking to two wheels 6 simultaneously, and two wheels 6 of synchronous braking have improved braking security and stationarity greatly, can not appear turning on one's side the condition etc.; the wheelchair brake device has the advantages of ingenious structural design, convenience and flexibility in operation, and the overall design accords with human engineering mechanics, and is helpful for timely reaction and wheelchair brake when a user meets an emergency.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims

1. A wheelchair with double wheels braked synchronously is characterized in that: the brake device comprises a frame (1), wheels (6) respectively arranged on two sides of the frame (1) and a brake device for braking the wheels (6), wherein the wheels (6) are rotatably arranged on a supporting tube (5) of the frame (1), the brake device comprises a brake rod (2), a sliding rod (4) and a control rod assembly (7), the bottom of the control rod assembly (7) is hinged to the supporting tube (5), one end of the sliding rod (4) is rotatably connected to the control rod assembly (7) and is distributed at intervals with a hinge point of the control rod assembly (7), the other end of the sliding rod (4) is connected with the brake rod (2), the brake rod (2) is transversely arranged on the outer sides of the two wheels (6), a limit block (3) fixedly connected on the frame (1) is arranged between the brake rod (2) and the control rod assembly (7), and the sliding rod (4) is connected with the limit block (3) in a sliding manner, the control rod assembly (7) rotates to drive the sliding rod (4) to move so as to drive the brake rod (2) to be in friction contact with the wheel (6).

2. The dual wheel synchronous braking wheelchair as claimed in claim 1, wherein: the control rod assembly (7) comprises control rods (71) which are respectively arranged on the left side and the right side of the wheelchair and a linkage rod (72) connected between the two control rods (71), a mounting seat (73) is arranged on the linkage rod (72), and one end of the sliding rod (4) is rotatably connected onto the mounting seat (73).

3. The dual wheel synchronous braking wheelchair as claimed in claim 1, wherein: an elastic piece (8) is arranged on the outer side of the sliding rod (4), one end of the elastic piece (8) abuts against the brake rod (2), and the other end of the elastic piece (8) abuts against the limiting block (3).

4. A dual wheel synchronous braking wheelchair as claimed in claim 3, wherein: the elastic piece (8) is a spring sleeved on the outer side of the sliding rod (4).

5. The dual wheel synchronous braking wheelchair as claimed in claim 2, wherein: the end parts of the control rods (71) are provided with pedal plates.

6. The dual wheel synchronous braking wheelchair as claimed in claim 5, wherein: friction lines (21) are arranged at two ends of the brake rod (2), and when the brake rod (2) is in contact with the wheel (6), the wheel (6) is braked through the contact friction of the friction lines (21) and the wheel (6).

7. The dual wheel synchronous braking wheelchair as claimed in claim 6, wherein: a stop block (74) is arranged on the control rod (71), and when the control rod (71) rotates for a certain angle, the stop block (74) abuts against the support pipe (5).