CN211797367U

CN211797367U - Quick locking and releasing mechanism for wheelchair bed

Info

Publication number: CN211797367U
Application number: CN201921358224.4U
Authority: CN
Inventors: 蔡黎明; 刘永峰; 张森浩
Original assignee: Suzhou Institute of Biomedical Engineering and Technology of CAS
Current assignee: Suzhou Institute of Biomedical Engineering and Technology of CAS
Priority date: 2019-08-21
Filing date: 2019-08-21
Publication date: 2020-10-30
Anticipated expiration: 2029-08-21

Abstract

The utility model discloses a quick locking and release mechanism for wheelchair bed, include: the wheelchair comprises guardrails, a wheelchair locking component fixedly connected to the wheelchair side of the wheelchair bed and a locking plate fixedly connected to the bed body side of the wheelchair bed; the bottom of the guardrail is connected with a bolt, a first jack and a second jack for inserting the bolt are respectively arranged on the wheelchair locking component and the locking plate, and the guardrail can be detachably connected with the wheelchair locking component and the locking plate; the wheelchair locking assembly is used for locking the wheelchair on the bed body. The utility model can be used for two purposes, and can be used as a wheelchair-shaped guardrail or a bed-shaped guardrail, thereby solving the storage problem of the guardrail; the guardrail just realizes the locking and the release of the bed body and wheelchair when the transfer between the bed body and the wheelchair is connected, namely the release of the wheelchair can be realized simultaneously when the guardrail is connected on the wheelchair, and the wheelchair locking can be realized simultaneously when the guardrail is connected on the bed body, so that the wheelchair locking device has no need of additional operation and is convenient and fast.

Description

Quick locking and releasing mechanism for wheelchair bed

Technical Field

The utility model relates to a rehabilitation and nursing field, in particular to a quick locking and releasing mechanism for wheelchair bed.

Background

With the large environmental influences of population, medical treatment and the like, China has rapidly entered into an aging society, and the number of the old people needing to be nursed is also increased rapidly. The requirement of people living standard is increasingly improved, the desire of labor intensity of family members and nursing personnel is relieved, and the deficiency of the function of the traditional nursing bed is added, so that the requirement of an intelligent nursing bed with more functions is provided.

More and more nursing beds are added with wheelchair functions, but locking and releasing between a plurality of wheelchairs and a bed body are too complicated, and the locking effect is also problematic. In addition, many wheelchair function barriers are stored as accessories, causing additional storage workload for the caregiver and being easily lost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the deficiencies in the prior art, a quick locking and releasing mechanism for wheelchair bed is provided.

In order to solve the technical problem, the utility model discloses a technical scheme is: a quick lock and release mechanism for a wheelchair bed comprising: the wheelchair comprises guardrails, a wheelchair locking component fixedly connected to the wheelchair side of the wheelchair bed and a locking plate fixedly connected to the bed body side of the wheelchair bed;

the bottom of the guardrail is connected with a bolt, a first jack and a second jack for the bolt to insert are respectively arranged on the wheelchair locking component and the locking plate, and the guardrail can be detachably connected with the wheelchair locking component and the locking plate;

the wheelchair locking assembly is used for locking the wheelchair on the bed body.

Preferably, a first rack is arranged on the side of the bolt;

wheelchair locking subassembly includes the rigid coupling and is in gear box on the wheelchair, can follow the setting of X direction slip second rack in the gear box, connect in locking pin on the first rack, set up confession on the gear box trompil, rotatable coupling that the locking pin passed are in pivot, setting on the inner wall of gear box are in epaxial be used for with first gear and the setting of first rack toothing are in epaxial be used for with second gear of second rack toothing.

Preferably, the first insertion hole is formed in the gear case along the Z direction and penetrates the gear case.

The second jack is arranged on the locking plate along the Z direction; and a locking hole for inserting the locking pin is formed in the locking plate along the X direction.

Preferably, after the guardrail is connected to the wheelchair locking assembly, the bolt is inserted into the first insertion hole, and a first rack on the bolt is engaged with the first gear on the rotating shaft.

Preferably, a sliding block is fixedly connected to the bottom of the second rack, a sliding rail is arranged on the bottom surface of the gear box, and a sliding groove for accommodating the sliding block is formed in the sliding rail;

preferably, the bottom of the sliding block is pivoted with a roller.

Preferably, the locking pin is fixedly connected to the sliding block, a guide hole is formed in the sliding block along the X direction at the opposite side of the locking pin, and a guide shaft which is used for being inserted into the guide hole in a matched mode is arranged on the inner wall of the gear box.

Preferably, a first pressure spring is sleeved on the guide shaft and clamped between the inner wall of the gear box and the sliding block.

Preferably, a T-shaped groove is axially formed in the side of the plug pin, a T-shaped block is clamped in the T-shaped groove, and the first rack is fixedly connected to the outer side wall of the T-shaped block; and a plurality of second pressure springs are connected between the inner side part of the T-shaped block and the inner wall of the T-shaped groove.

Preferably, the teeth of the lowermost end of the first rack are provided with inclined guide surfaces.

The utility model has the advantages that: the utility model can be used for two purposes, and can be used as a wheelchair-shaped guardrail or a bed-shaped guardrail, thereby solving the storage problem of the guardrail; the guardrail just realizes the locking and the release of the bed body and wheelchair when the transfer between the bed body and the wheelchair is connected, namely the release of the wheelchair can be realized simultaneously when the guardrail is connected on the wheelchair, and the wheelchair locking can be realized simultaneously when the guardrail is connected on the bed body, so that the wheelchair locking device has no need of additional operation and is convenient and fast. The utility model is provided with the T-shaped block and the second pressure spring, so that the bolt can be conveniently and smoothly inserted into the first jack, and the meshing effect of the first rack and the first gear can be improved; the utility model discloses a set up guiding axle and guiding hole, can guarantee the alignment of fitting pin and trompil and locking hole.

Drawings

FIG. 1 is a schematic structural view of a wheelchair bed embodying the present invention in one embodiment;

FIG. 2 is a schematic structural view of the guardrail of the present invention disposed on the wheelchair locking assembly;

fig. 3 is a schematic structural view of the guardrail of the present invention disposed on the locking plate;

FIG. 4 is a schematic view of the wheelchair locking assembly and locking plate of the present invention when unlocked;

FIG. 5 is a schematic view of the wheelchair locking assembly of the present invention locked to the locking plate;

FIG. 6 is a schematic view of the internal structure of the wheelchair locking assembly of the present invention;

fig. 7 is a schematic structural view of the guardrail of the present invention;

FIG. 8 is a schematic structural view of the wheelchair locking assembly of the present invention;

fig. 9 is a schematic structural view of the slide block and the slide rail of the present invention;

fig. 10 is a schematic structural view of another view angle of the slide block and the slide rail according to the present invention;

fig. 11 is a schematic structural view of the plug of the present invention;

fig. 12 is a schematic structural view of the first rack and the latch of the present invention.

Description of reference numerals:

1, a guardrail; 2-a wheelchair; 3, bed body; 4-a wheelchair locking assembly; 5, locking a plate; 10, inserting a pin; 11-a first rack; 40-a gearbox; 41-a second rack; 42-locking pin; 43-opening a hole; 44-a rotating shaft; 45 — a first gear; 46 — a second gear; 47-a slide block; 48, a slide rail; 49, a guide shaft; 50-a second receptacle; 51-locking hole; 100-a T-shaped slot; 101-T-block; 102-a second pressure spring; 110 — an inclined guide surface; 400-mounting block; 401 — a first receptacle; 470-a roller; 471-a guide hole; 472 — mounting plate; 473-shaft; 480-a chute; 490-first compression spring.

Detailed Description

The present invention is further described in detail below with reference to examples so that those skilled in the art can implement the invention with reference to the description.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in fig. 1 to 3, the present embodiment of a quick locking and releasing mechanism for a wheelchair bed includes: the wheelchair comprises a guardrail 1, a wheelchair locking component 4 fixedly connected to the wheelchair 2 side of the wheelchair bed and a locking plate 5 fixedly connected to the bed body 3 side of the wheelchair bed. The bottom of the guardrail 1 is connected with a bolt 10, a first jack 401 and a second jack 50 for inserting the bolt 10 are respectively arranged on the wheelchair locking component 4 and the locking plate 5, and the guardrail 1 can be detachably connected with the wheelchair locking component 4 and the locking plate 5; the wheelchair locking assembly 4 is used to lock the wheelchair 2 to the bed 3.

Referring to fig. 1 (wherein the wheelchair locking assembly 4 and locking plate 5 are not specifically shown), there is shown a schematic view of an embodiment of the present invention as embodied in a wheelchair bed. In this embodiment, the wheelchair 2 and the bed body 3 can be detachably connected, the guardrail 1 can be connected to the bed body 3, and can also be connected to the wheelchair 2, and the wheelchair 2 and the bed body 3 can be quickly locked and released through the guardrail 1. When the wheelchair 2 is combined on the bed body 3, a wheelchair bed is formed and used as the bed body 3, the guard rails 1 are arranged on the bed body 3 and are linked with the wheelchair locking component 4 to move, so that the wheelchair 2 is locked on the bed body 3; when the wheelchair 2 is taken out of the bed body 3 (as shown in fig. 1, wherein for the convenience of understanding, the bed body 3 and the wheelchair 2 are both indicated by connecting the guardrail 1), the wheelchair 2 is used alone, at this time, the guardrail 1 needs to be taken down from the bed body 3, and after the guardrail 1 is taken down, the guardrail 1 is linked with the wheelchair locking component 4 to act, so as to release the locking of the wheelchair 2 on the bed body 3.

In particular, with reference to fig. 2-8, in one embodiment, the side of the bolt 10 is provided with a first rack 11; the wheelchair locking assembly 4 comprises a gear box 40 fixedly connected to the wheelchair 2, a second rack 41 slidably arranged in the gear box 40 along the X direction, a locking pin 42 connected to the first rack 11, an opening 43 formed in the gear box 40 for the locking pin 42 to pass through, a rotating shaft 44 rotatably connected to the inner wall of the gear box 40, a first gear 45 arranged on the rotating shaft 44 and used for meshing with the first rack 11, and a second gear 46 arranged on the rotating shaft 44 and used for meshing with the second rack 41. The gear housing 40 has a mounting block 400 attached to an inner wall thereof, and the shaft 44 is rotatably coupled to the mounting block 400. The first insertion hole 401 is opened in the gear case 40 in the Z direction (the orientation is described with reference to fig. 4), and penetrates the inside of the gear case 40. The second jack 50 is arranged on the locking plate 5 along the Z direction; the locking plate 5 is provided with a locking hole 51 along the X direction into which the locking pin 42 is inserted. After the guardrail (1) is connected to the wheelchair locking assembly (4), the bolt (10) is inserted into the first insertion hole (401), and the first rack (11) on the bolt (10) is engaged with the first gear (45) on the rotating shaft (44). In this embodiment, the first rack 11, the second rack 41, the first gear 45, and the second gear 46 are all two symmetrically disposed.

The working principle is as follows:

1 when realizing 2 functions of wheelchair, need to separate 2 and the bed body 3 of wheelchair:

firstly, the guardrail 1 is pulled out from the second insertion hole 50 of the locking plate 5 on the bed body 3 side and inserted into the first insertion hole 401 of the wheelchair locking component 4 on the wheelchair 2 side, when the guardrail 1 is inserted, the bolt 10 moves downwards along the Z direction, the first rack 11 on the bolt 10 moves downwards to drive the first gear 45 meshed with the bolt to rotate clockwise, then the second gear 46 is driven by the rotating shaft 44 to rotate clockwise synchronously, the second gear 46 drives the second rack 41 meshed with the second gear to move leftwards, the locking pin 42 is driven by the slide block 47 to move leftwards, the guardrail is separated from the locking hole 51, the contact locking is realized, the release of the wheelchair 2 is realized, the wheelchair 2 can be used independently, and refer to fig. 2 and 4.

2 when realizing the function of nursing the bed body 3, the wheelchair 2 needs to be pushed back to the bed body 3, and the bed body 3 is locked:

firstly extract guardrail 1 from the first jack 401 of wheelchair locking component 4 of wheelchair 2 side, when guardrail 1 extracts, bolt 10 is along Z to upward movement, first rack 11 upward movement on bolt 10, drive first gear 45 anticlockwise rotation with it meshing, rethread pivot 44 drives second gear 46 synchronous anticlockwise rotation, second gear 46 drives second rack 41 with it meshing and moves right, drive fitting pin 42 through slider 47 and move right, fitting pin 42 passes trompil 43 on gear box 40 and inserts in the locking hole 51 on locking plate 5, realize the locking of wheelchair 2 and the bed body 3. Then the guardrail 1 is inserted into the locking plate 5 at the side of the bed body 3, refer to fig. 3 and 5. The guardrail 1 is connected to the bed body 3 or the wheelchair 2, so that the storage of the guardrail 1 is avoided. Through the connection of the guardrail 1 and the wheelchair 2, the wheelchair locking component 4 can be linked to move, the rapid locking and releasing of the wheelchair 2 and the bed body 3 are realized, and the operation is convenient.

In a further preferred embodiment, referring to fig. 8 and 9, a sliding block 47 is fixedly connected to the bottom of the second rack 41, a sliding rail 48 is disposed on the bottom surface of the gear box 40, and a sliding slot 480 for accommodating the sliding block 47 is disposed on the sliding rail 48; the bottom of the sliding block 47 is pivotally connected with a roller 470, the bottom of the sliding block 47 is connected with a mounting plate 472, and two ends of the roller 470 are rotatably connected to the mounting plate 472 through a shaft 473. Through the contact of gyro wheel 470 with spout 480, realize that slider 47 removes, can reduce friction, make slider 47 slide more smoothly.

In a further preferred embodiment, referring to fig. 10, the locking pin 42 is fixedly connected to the sliding block 47, a guiding hole 471 is formed in the sliding block 47 at the opposite side of the locking pin 42 along the X direction, and a guiding shaft 49 for being fittingly inserted into the guiding hole 471 is disposed on the inner wall of the gear box 40. The guide shaft 49 is sleeved with a first compression spring 490, and the first compression spring 490 is clamped between the inner wall of the gear box 40 and the sliding block 47. The engagement of the guide shaft 49 with the guide hole 471 limits the linear movement of the slider 47 in the X direction, ensuring the alignment of the locking pin 42 with the opening 43 and the locking hole 51. When the plug pin 10 is inserted into the first insertion hole 401, the slide block 47 moves leftwards to generate certain extrusion on the first pressure spring 490, the current position of the plug pin can be kept due to the gravity of the guardrail 1 and the friction force between the first rack 11 and the first gear 45, and the slide block 47 cannot be pushed rightwards by the first pressure spring 490; when the guardrail 1 is pulled out and the bolt 10 is pulled out of the first jack 401, the rightward elastic action of the first pressure spring 490 can promote the slider 47 to move rightwards to return to the original position; since the frictional force between the first rack 11 and the first gear 45 may be reduced when the latch 10 moves upward than when the latch moves downward, the slider 47 can be assisted to return to the right by the first compression spring 490, and in addition, after the locking pin 42 is inserted into the locking hole 51, the right elastic force of the first compression spring 490 can also improve the locking firmness of the locking pin 42 in the locking hole 51.

In a further preferred embodiment, referring to fig. 11-12, a T-shaped groove 100 is axially formed in a side portion of the plug pin 10, a T-shaped block 101 is clamped in the T-shaped groove 100, and the first rack 11 is fixedly connected to an outer side wall of the T-shaped block 101; a plurality of second compression springs 102 are connected between the inner side of the T-shaped block 101 and the inner wall of the T-shaped groove 100. The teeth of the lowermost end of the first rack 11 are provided with inclined guide surfaces 110. After the insert pin 10 is inserted downward into the first insertion hole 401, the first rack 11 is brought into contact with and engaged with the first gear 45, and the inclined guide surface 110 can facilitate smooth insertion of the insert pin 10 and guide engagement of the first rack 11 with the first gear 45. The T-shaped block 101 can move left and right within a small range, after the bolt 10 is inserted, the first gear 45 extrudes the first rack 11, the T-shaped block 101 moves rightwards for a small distance, the bolt 10 can be conveniently and smoothly inserted, after the bolt 10 is completely inserted, the first rack 11 can be tightly attached to the first gear 45 leftwards under the action of the elastic force of the second pressure spring 102, and the meshing effect of the first rack and the first gear can be improved. Through setting up second pressure spring 102, can realize the soft cooperation of first rack 11 and first gear 45, can be convenient for bolt 10 to insert smoothly, can improve the meshing effect of first rack 11 and first gear 45 again.

While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields where the invention is suitable, and further modifications may readily be made by those skilled in the art, and the invention is therefore not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.

Claims

1. A quick lock and release mechanism for a wheelchair bed comprising: the wheelchair comprises guardrails, a wheelchair locking component fixedly connected to the wheelchair side of the wheelchair bed and a locking plate fixedly connected to the bed body side of the wheelchair bed;

2. The quick lock and release mechanism for a wheelchair bed as claimed in claim 1, wherein the latch is provided at a side thereof with a first rack;

3. The quick lock and release mechanism for a wheelchair bed as claimed in claim 2, wherein the first insertion hole is opened in the gear case in the Z direction and is communicated with the inside of the gear case;

4. The quick lock and release mechanism for a wheelchair bed of claim 3 wherein the latch is inserted into the first receptacle after the guardrail is attached to the wheelchair locking assembly, and a first rack on the latch engages with the first gear on the shaft.

5. The quick locking and releasing mechanism for the wheelchair bed as claimed in claim 4, wherein a sliding block is fixedly connected to the bottom of the second rack, a sliding rail is arranged on the bottom surface of the gear box, and a sliding groove for accommodating the sliding block is formed in the sliding rail.

6. The quick lock and release mechanism for a wheelchair bed of claim 5 wherein the bottom of the slider is pivotally connected to a roller.

7. The quick locking and releasing mechanism for a wheelchair bed as claimed in claim 5, wherein the locking pin is fixedly connected to the slider, a guide hole is formed in the slider at the opposite side of the locking pin along the X direction, and a guide shaft for being fittingly inserted into the guide hole is provided on the inner wall of the gear box.

8. The quick locking and releasing mechanism for a wheelchair bed as claimed in claim 7, wherein a first compression spring is sleeved on the guide shaft, and the first compression spring is clamped between the inner wall of the gear box and the sliding block.

9. The quick locking and releasing mechanism for the wheelchair bed as claimed in claim 8, wherein a T-shaped groove is axially formed at a side portion of the latch, a T-shaped block is clamped in the T-shaped groove, and the first rack is fixedly connected to an outer side wall of the T-shaped block; and a plurality of second pressure springs are connected between the inner side part of the T-shaped block and the inner wall of the T-shaped groove.

10. The quick lock and release mechanism for a wheelchair bed of claim 2 wherein the teeth at the lowermost end of the first rack are provided with a sloped guide surface.