CN114135607A

CN114135607A - Parking device for wheelchair

Info

Publication number: CN114135607A
Application number: CN202111457034.XA
Authority: CN
Inventors: 王春红
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-03-04

Abstract

The invention discloses a parking device for a wheelchair, which comprises a parking component and a traction component, wherein the parking component comprises a lower fixed seat, an upper fixed seat, a locking part, a traction plate and a cover plate, the traction component comprises a lower traction seat and an upper traction seat, and when the traction plate is pulled, the traction plate drives the locking part and is locked at the current position by the locking part. The parking device for the wheelchair has the following advantages: the parking device is convenient to install, suitable for refitting, stable and reliable.

Description

Parking device for wheelchair

Technical Field

The invention relates to a wheelchair part, in particular to a parking device for a wheelchair.

Background

The existing common wheelchair is not provided with a parking function, and is easy to slide, so that danger is caused.

Disclosure of Invention

The invention mainly solves the technical problems in the prior art, and provides a parking device for a wheelchair.

The technical problem of the invention is mainly solved by the following technical scheme:

a parking device for a wheelchair is characterized by comprising a parking component and a traction component,

the parking component comprises a lower fixed seat, an upper fixed seat, a locking part, a traction plate and a cover plate,

the traction assembly comprises a lower traction seat and an upper traction seat

When the traction plate is pulled, the traction plate drives the locking part and is locked at the current position by the locking part.

the lower fixing seat comprises a semi-cylindrical lower fixing cylinder, lower fixing flanges are arranged on four corners of the lower fixing cylinder, lower fixing screw holes are arranged on the lower fixing flanges,

the upper fixing seat is detachably connected with the lower fixing seat and comprises a semi-cylindrical upper fixing cylinder, upper fixing flanges are arranged at four corners of the upper fixing cylinder, upper fixing screw holes are arranged on the upper fixing flanges, the upper fixing screw holes are connected with the lower fixing screw holes through screws, a block-shaped upper fixing base station is arranged at the top of the upper fixing cylinder, and upper base station connecting holes are arranged at four corners of the upper fixing base station,

the upper fixing base station is characterized in that a through unlocking opening is formed in each of the left side wall and the right side wall of the upper fixing base station, an unlocking pin hole is formed in each side wall of the unlocking opening, a rotatable unlocking pressure head is arranged in each unlocking opening, each unlocking pressure head comprises a long-strip-shaped first pressure rod, a cylindrical middle rotary drum and a long-strip-shaped second pressure rod, an unlocking ejector rod is arranged on the inner side of each first pressure rod, the middle rotary drum is connected with the unlocking pin hole through an unlocking pin rod, a through rectangular movable opening is formed in each of the front side wall and the rear side wall of the upper fixing base station, a round fixing round groove is formed in the top of the upper fixing base station, the fixing round groove is communicated with the movable opening, a pair of fixing sunk grooves are formed in each side wall of the fixing round groove, and a sunk groove screw hole is formed in each fixing sunk groove,

the locking part is detachably arranged in the fixed circular groove and comprises a flat upper shell and a flat lower shell,

the upper shell comprises a circular upper shell main body, an upper shell center hole is arranged at the center of the upper shell main body, a plurality of upper shell connecting holes are arranged on the circumference of the upper shell main body, a pair of compression plate springs are arranged on the circumference of the upper shell main body, a pair of fixed clamping blocks are arranged on the outer wall of the upper shell main body, clamping block screw holes are arranged on the fixed clamping blocks, clamping block screws are arranged in the clamping block screw holes and penetrate through the sink screw holes,

the lower shell comprises a circular lower shell main body, a lower shell center hole is formed in the center of the lower shell main body, a plurality of lower shell connecting holes are formed in the circumferential direction of the lower shell main body and are connected with the upper shell connecting holes through a plurality of connecting pins,

a locking ratchet disc and a pair of locking ratchet blocks are arranged between the upper shell and the lower shell, the locking ratchet blocks are matched with the locking ratchet disc,

the center of the ratchet locking disc is provided with a ratchet disc center hole, the outer wall of the ratchet locking disc is provided with a plurality of ratchet grooves, a center rotating shaft is arranged in the ratchet disc center hole and penetrates through the upper shell center hole and the lower shell center hole, the side wall of the center rotating shaft is provided with a pair of clamp spring ring grooves, clamp springs are arranged in the clamp spring ring grooves, the tail end of the center rotating shaft is provided with a linkage gear,

the locking ratchet block comprises a beak-shaped ratchet block head and a triangular ratchet block tail, a ratchet block shaft tube is arranged between the ratchet block head and the ratchet block tail, a ratchet block pin is arranged in each ratchet block shaft tube and penetrates through the corresponding upper shell connecting hole and the lower shell connecting hole,

the traction plate comprises a square traction frame, a plurality of traction teeth are arranged on the inner wall of one side of the traction frame, the traction teeth are matched with the linkage gear, a steel wire locking screw hole is arranged at the tail part of the traction frame, a steel wire bayonet is arranged on the inner wall of the steel wire locking screw hole, a steel wire locking screw is arranged in the steel wire locking screw hole, a traction head is arranged at the head part of the traction frame, a traction hole is arranged on the traction head,

the cover plate is arranged at the top of the upper fixed seat, four corners of the cover plate are respectively provided with a cover plate fixing hole, the cover plate fixing holes are connected with the connecting holes of the upper base station through a cover plate screw,

the traction assembly comprises a lower traction seat and an upper traction seat, the lower traction seat comprises a lower traction cross bar and a lower traction clamping block, the lower traction cross bar is provided with a lower traction screw hole and a lower traction round hole, the inner wall of the lower traction screw hole is provided with a lower clamping groove, the lower traction clamping block is provided with a lower wiring groove,

the upper traction seat comprises an upper traction cross bar and an upper traction block, the upper traction cross bar is provided with an upper traction screw hole and an upper traction shaft, the upper traction block is provided with an upper wiring groove, a locking screw penetrates through the upper traction screw hole and the lower traction screw hole, and the upper traction shaft penetrates through the traction hole and the lower traction round hole.

The parking device for the wheelchair has the following advantages: the parking device is convenient to install, suitable for refitting, stable and reliable.

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 the drawings without creative efforts.

FIG. 1 is a schematic perspective view of the parking device for wheelchair of the present invention;

FIG. 2 is an exploded perspective view of the park for a wheelchair of FIG. 1;

FIG. 3 is an exploded perspective view of the traction assembly of the park for a wheelchair of FIG. 2;

FIG. 4 is an enlarged schematic view of area A in FIG. 3;

FIG. 5 is an exploded perspective view of the park assembly of the park for the wheelchair of FIG. 2;

FIG. 6 is a perspective view of a retractor plate of the park assembly of FIG. 5;

FIG. 7 is an enlarged schematic view of region B in FIG. 6;

FIG. 8 is an exploded perspective view of a latch portion of the park assembly of FIG. 5;

FIG. 9 is a perspective view of the latch portion of FIG. 5;

FIG. 10 is a cross-sectional view of the latch portion of FIG. 9 taken along line C-C;

FIG. 11 is a perspective view of the upper housing of the latch portion of FIG. 8;

FIG. 12 is a perspective view of a ratchet block of the locking portion of FIG. 8;

FIG. 13 is an exploded perspective view of the upper retaining bracket of the park assembly shown in FIG. 5;

FIG. 14 is an enlarged schematic view of region D of FIG. 13;

FIG. 15 is an enlarged schematic view of area E in FIG. 13;

FIG. 16 is a schematic view of the parking brake of the present invention, with the retractor plate in a locked position;

FIG. 17 is an enlarged schematic view of region F of FIG. 16;

FIG. 18 is a schematic view of the parking brake of the present invention with the drawplate unlocked;

FIG. 19 is an enlarged schematic view of region G of FIG. 18;

FIG. 20 is an enlarged schematic view of region H in FIG. 18;

fig. 21 is a schematic connection diagram of the parking brake of the present invention.

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 will be more clearly and clearly defined.

As shown in fig. 1 and 2, the parking apparatus 1 for wheelchair comprises a parking module M1 and a traction module M2.

The parking module M1 includes a lower fixing base 2, an upper fixing base 3, a locking portion 4, a pulling plate 5 and a cover plate 6.

As shown in fig. 5, the lower fixing base 2 includes a semi-cylindrical lower fixing cylinder 21, a lower fixing flange 22 is disposed at each of four corners of the lower fixing cylinder 21, and a lower fixing screw 23 is disposed on each of the lower fixing flanges 22.

As shown in fig. 13 to 15, the upper fixing base 3 is detachably connected to the lower fixing base 2, the upper fixing base 3 includes a semi-cylindrical upper fixing cylinder 31, four corners of the upper fixing cylinder 31 are respectively provided with an upper fixing flange 32, the upper fixing flange 32 is respectively provided with an upper fixing screw hole 33, the upper fixing screw hole 33 is connected to the lower fixing screw hole 23 by screws, the top of the upper fixing cylinder 31 is provided with a block-shaped upper fixing base 34, and four corners of the upper fixing base 34 are respectively provided with an upper base connecting hole 340.

The left and right side walls of the upper fixed base station 34 are both provided with a through unlocking opening 344, the side wall of the unlocking opening 344 is provided with an unlocking pin hole 345, the unlocking openings 344 are provided with a rotatable unlocking pressure head 36, the unlocking pressure head 36 comprises a first strip-shaped pressure rod 361, a cylindrical middle rotary drum 362 and a second strip-shaped pressure rod 363, an unlocking rod 364 is provided on the inner side of the first pressing rod 361, the middle rotating cylinder 362 is connected with the unlocking pin hole 345 through an unlocking pin rod 37, the front and rear side walls of the upper fixed base station 34 are provided with a rectangular through movable opening 35, the top of the upper fixed base station 34 is provided with a circular fixed circular groove 341, the fixed circular groove 341 is communicated with the movable opening 35, a pair of fixed sinking grooves 342 are formed on the sidewalls of the fixed circular groove 341, and a sinking groove screw hole 343 is formed on each of the fixed sinking grooves 342.

As shown in fig. 4 to 12, the locking portion 4 is detachably disposed in the fixing circular groove 341, and the locking portion 4 includes a flat upper housing 41 and a flat lower housing 42.

The upper housing 41 includes a circular upper housing main body 411, an upper housing central hole 412 is disposed at the center of the upper housing main body 411, a plurality of upper housing connection holes 413 are disposed on the circumference of the upper housing main body 411, a pair of compression plate springs 414 is disposed on the circumference of the upper housing main body 411, a pair of fixing blocks 415 are disposed on the outer wall of the upper housing main body 411, a block screw hole 416 is disposed on each fixing block 415, a block screw 40 is disposed in each block screw hole 416, and the block screw 40 penetrates through the slot screw hole 343.

The lower casing 42 includes a circular lower casing main body 421, a lower casing center hole 422 is formed in the center of the lower casing main body 421, a plurality of lower casing connection holes 423 are formed in the circumferential direction of the lower casing main body 421, and the lower casing connection holes 423 are connected to the upper casing connection holes 413 through a plurality of connection pins 47.

As shown in fig. 8, a locking ratchet plate 49 and a pair of locking ratchet blocks 45 are disposed between the upper casing 41 and the lower casing 42, and the locking ratchet blocks 45 are engaged with the locking ratchet plate 49.

The center of the ratchet locking disk 49 is provided with a central ratchet disk hole 491, the outer wall of the ratchet locking disk 49 is provided with a plurality of ratchet grooves 492, the central ratchet disk hole 491 is internally provided with a central rotating shaft 43, the central rotating shaft 43 penetrates through the upper shell central hole 412 and the lower shell central hole 422, the side wall of the central rotating shaft 43 is provided with a pair of snap ring grooves 431, a snap ring 48 is arranged in each snap ring groove 431, and the tail end of the central rotating shaft 43 is provided with a linkage gear 44.

The locking ratchet block 45 comprises a ratchet block head 451 in a bird beak shape and a ratchet block tail 453 in a triangle shape, a ratchet block axle tube 452 is arranged between the ratchet block head 451 and the ratchet block tail 453, a ratchet block pin 46 is arranged in each ratchet block axle tube 452, and the ratchet block pin 46 penetrates through the corresponding upper shell connecting hole 413 and the lower shell connecting hole 423.

As shown in fig. 6 and 7, the pulling plate 5 includes a rectangular pulling frame 51, a plurality of pulling teeth 52 are disposed on an inner wall of one side of the pulling frame 51, the pulling teeth 52 are engaged with the linkage gear 44, a wire locking screw hole 53 is disposed at a tail portion of the pulling frame 51, a wire bayonet 54 is disposed on an inner wall of the wire locking screw hole 53, a wire locking screw 55 is disposed in the wire locking screw hole 53, a pulling head 56 is disposed at a head portion of the pulling frame 51, and a pulling hole 57 is disposed on the pulling head 56.

The cover plate 6 is disposed on the top of the upper fixing base 3, four corners of the cover plate 6 are each provided with a cover plate fixing hole 61, and the cover plate fixing holes 61 are connected with the upper base station connecting holes 340 through a cover plate screw 62.

As shown in fig. 3 and 4, the pulling assembly M2 includes a lower pulling seat 7 and an upper pulling seat 8, the lower pulling seat 7 includes a lower pulling cross bar 71 and a lower pulling fixture block 72, the lower pulling cross bar 71 is provided with a lower pulling screw hole 711 and a lower pulling circular hole 712, the inner wall of the lower pulling screw hole 711 is provided with a lower fixture groove 713, and the lower pulling fixture block 72 is provided with a lower cabling groove 721.

The upper traction seat 8 comprises an upper traction cross bar 81 and an upper traction block 82, the upper traction cross bar 81 is provided with an upper traction screw hole 811 and an upper rotation shaft 812, the upper traction block 82 is provided with an upper wiring groove 821, a locking screw 9 penetrates through the upper traction screw hole 811 and the lower traction screw hole 711, and the upper rotation shaft 812 penetrates through the traction hole 57 and the lower traction round hole 712.

The operation of the parking device 1 for wheelchair will be explained below, and as shown in fig. 21, the operation includes the steps of:

step 1, fixing the parking device on a handle beam of a wheelchair and approaching a brake handle by using a lower fixing cylinder 21 of a lower fixing seat 2 and an upper fixing cylinder 31 of an upper fixing seat 3;

step 2, the tail end of a first brake cable L1 of the brake handle H penetrates through the upper wiring groove 821, the lower wiring groove 721 and the lower traction screw hole 711 and is tightly attached to the lower clamping groove 713 on the lower traction screw hole 711, then, a cable locking screw 9 is locked, and the first brake cable L1 is fixed;

step 3, penetrating the tail end of a second brake line L2 of the wheelchair brake B through a steel wire locking screw hole 53, locking a steel wire locking screw 55 and fixing the second brake line L2;

step 4, when braking is required, as shown in fig. 16 and 17, the user pinches the brake handle H, so that the first brake cable L1 drives the traction assembly M2 along the direction F1, the traction assembly M2 drives the traction plate 5, and the traction plate 5 drives the second brake cable L2, so that the wheelchair brake B is continuously tightened to generate braking friction. When the drawplate 5 slides, the linkage gear 44 rotates counterclockwise by the cooperation of the traction teeth 52 of the drawplate 5 and the linkage gear 44. During the counterclockwise rotation of the linkage gear 44, the ratchet block head 451 of the locking ratchet block 45 continuously slides through the ratchet groove 492 of the locking ratchet plate 49 until a sufficient braking force is obtained on the wheelchair brake B and the user releases the brake handle H. At the moment of releasing the brake lever H, the second brake wire L2 retracts, the drawplate 5 instantaneously moves in the direction opposite to the direction F1, and the link gear 44 instantaneously rotates clockwise. At this time, the ratchet block head 451 of the locking ratchet block 45 is instantly locked by the ratchet groove 492 of the locking ratchet disc 49, the linkage gear 44 cannot rotate continuously and is locked at the current position, and the traction plate 5 is also locked at the current position, so that the current braking force is maintained, and the wheelchair is prevented from sliding;

step 5, when the user needs to release the parking, as shown in fig. 18 and 20, the user can slightly pinch the brake handle H with a hand, and then press the first pressing rod 361 of the unlocking pressing head 36 along the direction F2 at the same time with two fingers, so that the unlocking mandril 364 of the unlocking pressing head 36 abuts against the ratchet block tail 453 of the locking ratchet block 45, and then the locking ratchet block 45 is forced to rotate, so that the ratchet block head 451 of the locking ratchet block 45 is disengaged from the ratchet groove 492, at this time, the locking ratchet disc 49 is unlocked, the central rotating shaft 43 and the linkage gear 44 are also unlocked, and the pulling plate 5 is also unlocked. The user can slowly release the brake handle H at the moment until the brake handle H is reset, and the wheelchair is restored to the free state.

The parking device is convenient to install, suitable for refitting, stable and reliable.

Without being limited thereto, any changes or substitutions that are not thought of through the inventive work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.

Claims

1. A parking device for a wheelchair is characterized by comprising a parking component and a traction component,

2. A parking device for a wheelchair is characterized by comprising a parking component and a traction component,