CN203421090U

CN203421090U - Band-type brake of wheelchair

Info

Publication number: CN203421090U
Application number: CN201320473550.6U
Authority: CN
Inventors: 陈如山; 任振强
Original assignee: JIANGSU SHUANGZHENG VEHICLE Co Ltd
Current assignee: JIANGSU SHUANGZHENG VEHICLE Co Ltd
Priority date: 2013-08-05
Filing date: 2013-08-05
Publication date: 2014-02-05
Anticipated expiration: 2023-08-05

Abstract

The utility model discloses a band-type brake of a wheelchair. The band-type brake of the wheelchair comprises a brake box, a C-shaped brake strap is arranged on the lower portion of the brake box, a rotatable driving crank and a rotatable driven crank are arranged on the upper portion of the brake box, and an omega-shaped reset spring is arranged and detachably clamped between the driving crank and the driven crank. According to the band-type brake of the wheelchair, by the utilization of a driving clamping groove in the bottom of the edge of a driving chuck and a driven clamping groove in the bottom of the edge of a driven chuck, in the assembling process, a user can directly clamp clamping protrusions of the reset spring in the driving clamping groove and the driven clamping groove, and then the reset spring is assembled. In addition, due to the adoption of two-way clamping, rotating synchronization of the driving crank and the driven crank is good, and the brake strap can be quickly and reliably released. Structural components of the band-type brake of the wheelchair are easy to demount and mount, and high in practicability.

Description

Wheelchair band-type brake

Technical Field

The utility model relates to a wheelchair brake device, more exactly, is a wheelchair band-type brake.

Background

The wheelchair band-type brake is a common wheelchair braking device, and the tightness of a brake belt is generally realized by the mutual matching of a driving crank throw and a driven crank throw, so that the brake is realized. In order to automatically reset the brake band, it is generally necessary to provide a return spring on the driving crank and the driven crank. The existing reset spring is single-side reset, the assembly structure is very complex, the assembly efficiency is low, the processing manufacturability is not good, and the cost is higher.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve the technical problem that prior art exists to a wheelchair band-type brake is provided.

The above technical problem of the present invention can be solved by the following technical solutions:

a wheelchair band-type brake comprises a brake box, wherein a C-shaped brake belt is arranged at the lower part of the brake box, a rotatable driving crank and a rotatable driven crank are arranged at the upper part of the brake box, an omega-shaped return spring is arranged between the driving crank and the driven crank, and the return spring is detachably clamped between the driving crank and the driven crank.

As the utility model discloses the embodiment of preferred, the head edge of initiative crank throw be equipped with a sectorial initiative chuck, the edge of initiative chuck be equipped with a initiative latch, the edge bottom of initiative chuck be equipped with a initiative connect the through-hole, driven crank throw contain a sectorial driven chuck, the edge of driven chuck be equipped with a driven latch, the edge bottom of driven latch be equipped with a driven connect the through-hole, the initiative latch with driven latch fit each other, the both ends of floodgate area respectively through a connecting rivet with initiative connect the through-hole and driven connect the through-hole and be connected.

As the utility model discloses the embodiment of preferred, the marginal bottom of initiative chuck be equipped with a initiative draw-in groove, the marginal bottom of driven chuck be equipped with a driven draw-in groove, reset spring's both ends difference joint be in initiative draw-in groove and driven draw-in groove in.

As the embodiment of the utility model discloses the preferred, reset spring contain an annular spring main part, spring main part's both ends be equipped with a block linkage segment respectively, the end of block linkage segment be equipped with a crooked block respectively outstanding, the outstanding joint respectively of block be in initiative draw-in groove and driven draw-in groove in.

As the embodiment of the utility model discloses the preferred, the edge of driven chuck be equipped with a pair of spacing through-hole, the both sides of driven chuck be equipped with a curved spacing separation blade respectively, spacing separation blade through a pair of spacing rivet with spacing through-hole be connected.

The utility model discloses a wheelchair band-type brake utilizes the initiative draw-in groove of the marginal bottom of active chuck and the driven draw-in groove of the marginal bottom of driven chuck, when assembling, the user can be directly with the outstanding card of reset spring's block in initiative draw-in groove and driven draw-in groove, has accomplished reset spring's assembly promptly. In addition, due to the adoption of bidirectional clamping, the rotation synchronism of the driving crank and the driven crank is better, and the reset of the brake band is more rapid and reliable. The wheelchair band-type brake structural member is easy to disassemble and assemble and high in practicability.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a wheelchair brake of the present invention;

FIG. 2 is an exploded perspective view of the wheelchair band-type brake of FIG. 1;

FIG. 3 is a further perspective view of the wheelchair band-type brake of FIG. 2 with the brake housing removed;

FIG. 4 is an enlarged detail view of area A of the wheelchair band-type brake of FIG. 3;

FIG. 5 is an exploded perspective view of the wheelchair band-type brake of FIG. 3;

FIG. 6 is an enlarged detail view of the area B of the wheelchair band-type brake of FIG. 5;

FIG. 7 is a further perspective exploded view of the wheelchair band brake of FIG. 5 with the brake band and the brake band pin removed;

FIG. 8 is an enlarged detail view of the area C of the wheelchair band-type brake of FIG. 7;

figure 9 is a schematic perspective view of a return spring of the wheelchair band-type brake of figure 5;

wherein,

1. a wheelchair brake; 2. a brake box; 3. a gate belt; 4. an active crank; 40. an active chuck; 41. driving latch; 42. an active card slot; 43. actively connecting the through holes; 5. a driven crank throw; 50. a driven chuck; 51. a driven latch; 52. a limiting through hole; 53. a driven card slot; 54. the driven connecting through hole; 6. connecting rivets; 7. a return spring; 71. a spring body; 72. clamping the connecting section; 73. clamping protrusion; 8. a limiting baffle plate; 9. and (5) limiting rivets.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.

As shown in fig. 1 to 9, the wheelchair band-type brake 1 of the present invention comprises a brake box 2, a C-shaped brake band 3 is disposed at the lower portion of the brake box 2, a rotatable driving crank 4 and a rotatable driven crank 5 are disposed at the upper portion of the brake band, an Ω -shaped return spring 7 is disposed between the driving crank 4 and the driven crank 5, and the return spring 7 is detachably connected between the driving crank 4 and the driven crank 5.

The head edge of the driving bell crank 4 is provided with a fan-shaped driving chuck 40, the edge of the driving chuck 40 is provided with a driving latch 41, the edge bottom of the driving chuck 40 is provided with a driving connecting through hole 43, the driven bell crank 5 comprises a fan-shaped driven chuck 50, the edge of the driven chuck 50 is provided with a driven latch 51, the edge bottom of the driven latch 51 is provided with a driven connecting through hole 54, the driving latch 41 and the driven latch 51 are fitted with each other, and two ends of the brake band 3 are respectively connected with the driving connecting through hole 43 and the driven connecting through hole 54 through a connecting rivet 6.

The driving chuck 40 has a driving engaging groove 42 at the bottom of its edge, the driven chuck 50 has a driven engaging groove 53 at the bottom of its edge, and the two ends of the return spring 7 are respectively engaged with the driving engaging groove 42 and the driven engaging groove 53.

The return spring 7 includes an annular spring body 71, two ends of the spring body 71 are respectively provided with a fastening connection section 72, ends of the fastening connection sections 72 are respectively provided with a curved fastening protrusion 73, and the fastening protrusions 73 are respectively fastened in the driving fastening groove 42 and the driven fastening groove 53.

The edge of the driven chuck 50 is provided with a pair of limiting through holes 52, two sides of the driven chuck 50 are respectively provided with an arc-shaped limiting separation blade 8, and the limiting separation blade 8 is connected with the limiting through holes 52 through a pair of limiting rivets 9.

The utility model discloses a wheelchair band-type brake utilize the initiative draw-in groove of the marginal bottom of active chuck and the driven draw-in groove of the marginal bottom of driven chuck, when assembling, the user can directly be with the outstanding card of reset spring's block in initiative draw-in groove and driven draw-in groove, has accomplished reset spring's assembly promptly. In addition, as the bidirectional clamping is adopted, the reset synchronism of the driving crank throw and the driven crank throw is better, and the brake band is released more quickly and reliably. The wheelchair band-type brake structural member is easy to disassemble and assemble and high in practicability.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. A wheelchair band-type brake, wheelchair band-type brake (1) contain a floodgate box (2), the lower part of floodgate box (2) be equipped with "C" shape brake area (3), its upper portion is equipped with a rotatable initiative crank throw (4) and a rotatable driven crank throw (5), its characterized in that, initiative crank throw (4) and driven crank throw (5) between be equipped with an "omega" reset spring (7) of shape, reset spring (7) detachably joint be in initiative crank throw (4) and driven crank throw (5) between.

2. The wheelchair band-type brake as claimed in claim 1, wherein a fan-shaped driving chuck (40) is arranged at the edge of the head of the driving crank (4), a driving latch (41) is arranged at the edge of the driving chuck (40), a driving connecting through hole (43) is arranged at the bottom of the edge of the driving chuck (40), the driven crank (5) comprises a fan-shaped driven chuck (50), a driven latch (51) is arranged at the edge of the driven chuck (50), a driven connecting through hole (54) is arranged at the bottom of the edge of the driven latch (51), the driving latch (41) and the driven latch (51) are fitted with each other, and two ends of the brake band (3) are respectively connected with the driving connecting through hole (43) and the driven connecting through hole (54) through a connecting rivet (6).

3. The wheelchair band-type brake as claimed in claim 2, wherein a driving slot (42) is formed at the bottom of the edge of the driving chuck (40), a driven slot (53) is formed at the bottom of the edge of the driven chuck (50), and two ends of the return spring (7) are respectively clamped in the driving slot (42) and the driven slot (53).

4. The wheelchair band-type brake as claimed in claim 3, wherein the return spring (7) comprises an annular spring body (71), two ends of the spring body (71) are respectively provided with a clamping connection section (72), the tail ends of the clamping connection sections (72) are respectively provided with a bent clamping protrusion (73), and the clamping protrusions (73) are respectively clamped in the driving clamping groove (42) and the driven clamping groove (53).

5. The wheelchair band-type brake as claimed in claim 2, 3 or 4, wherein a pair of limiting through holes (52) are formed in the edge of the driven chuck (50), an arc-shaped limiting baffle (8) is respectively arranged on two sides of the driven chuck (50), and the limiting baffle (8) is connected with the limiting through holes (52) through a pair of limiting rivets (9).