CN213157121U

CN213157121U - Wheelchair frame locking mechanism

Info

Publication number: CN213157121U
Application number: CN202021465767.9U
Authority: CN
Inventors: 陈建国; 陈新; 侯晓波
Original assignee: Jerry Medical Instrument Shanghai Co ltd
Current assignee: Jerry Medical Instrument Shanghai Co ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-05-11
Anticipated expiration: 2030-07-23

Abstract

The utility model discloses a wheelchair frame locking mechanical system, including the dead lever, dead lever both ends fixed connection is on the frame, the dead lever bottom is fixed with the stopper, it has the arc spacing groove to open the stopper bottom, the stopper side is fixed with the round pin axle, sell epaxial fixed connection torsional spring lower extreme, the torsional spring is located the buckle inboard, the torsional spring upper end supports the buckle inboard, the buckle includes buckle bottom surface and two buckle sides, and two buckle side structure sizes are the same, connects in buckle bottom surface both sides, open at buckle side middle part has the arc draw-in groove, buckle side upper portion swing joint round pin axle, the round pin axle can be followed to the buckle side and rotated, arc draw-in groove detachable mounting has the chassis, the chassis both sides are connected the frame through the pivot. This device simple structure forms the locking piece through the cooperation of stopper, buckle, torsional spring and round pin axle to the locking of frame is come in the realization, simple structure.

Description

Wheelchair frame locking mechanism

Technical Field

The utility model relates to a wheelchair locking mechanical system technical field, concretely relates to wheelchair frame locking mechanical system.

Background

The wheelchair is an important tool for rehabilitation, not only is the wheelchair used as a travel tool for physically disabled persons and persons with mobility disabilities, but also more importantly, the wheelchair is used for physical exercise and participating in social activities. However, the wheelchair is large in size and inconvenient to carry when going out. Therefore, in order to save the space occupied by the wheelchair, most wheelchairs on the market at present adopt a folding structure, and the frame of the wheelchair is locked by a frame locking structure after being folded. However, the existing frame locking structure is complex in structure and easy to damage.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wheelchair frame locking mechanical system to solve the problem that provides among the above-mentioned background art. In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a wheelchair frame locking mechanism, includes the dead lever, dead lever both ends fixed connection is on the frame, the dead lever bottom is fixed with the stopper, open the stopper bottom has the arc spacing groove, the stopper side is fixed with the round pin axle, sell epaxial fixed connection torsional spring lower extreme, the torsional spring is located the buckle inboard, the torsional spring upper end supports the buckle inboard, the buckle includes buckle bottom surface and two buckle sides, and two buckle side structures size are the same, connects in buckle bottom surface both sides, open at buckle side middle part has the arc draw-in groove, buckle side upper portion swing joint round pin axle, the buckle side can be followed the round pin axle and rotated, arc draw-in groove separable mounting has the chassis, the frame is connected through the pivot in the chassis both sides.

Preferably, stopper, buckle, torsional spring and round pin axle form the locking piece, and the locking piece is equipped with two pairs, and the symmetry is installed on the dead lever.

Preferably, the buckle bottom is equipped with limit bush, limit bush is fixed in between two buckle sides through round pin axle I, the chassis bottom is fixed with the spacing piece, the spacing piece corresponds with limit bush position, and the realization that mutually supports is spacing.

Preferably, the top of the bottom surface of the buckle is of a handle structure.

The utility model discloses a technological effect and advantage: the device has a simple structure, the locking piece is formed by matching the limiting block, the buckle, the torsion spring and the pin shaft, so that the frame is locked, and the structure is simple; the locking piece that stopper, buckle, torsional spring and the cooperation of round pin axle formed is equipped with two pairs, and the locking effect is firm, and is difficult for taking place the maloperation.

Drawings

Fig. 1 is a schematic view of the installation of the present invention;

FIG. 2 is a schematic view of the installation of the torsion spring of the present invention;

fig. 3 is a schematic view of the buckle structure of the present invention.

In the figure: 1-fixed rod, 2-vehicle frame, 3-limiting block, 4-limiting groove, 5-pin shaft, 6-torsion spring, 7-buckle, 8-buckle bottom surface, 9-buckle side surface, 10-arc-shaped clamping groove, 11-pin shaft I, 12-bottom frame, 13-rotating shaft, 14-limiting bush and 15-limiting block.

Detailed Description

In order to make the technical means, the creative features, the objectives and the functions of the present invention easily understood and appreciated, the present invention will be further described with reference to the specific drawings, and in the description of the present invention, unless otherwise specified or limited, the terms "mounted," connected "and" connected "should be understood broadly, and for example, the terms" fixed connection, "detachable connection," integral connection, mechanical connection, and electrical connection may be used; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.

Example 1

As shown in fig. 1-3, the locking mechanism for a wheelchair frame comprises a fixing rod 1, wherein two ends of the fixing rod 1 are fixedly connected to a frame 2, a limiting block 3 is fixed at the bottom of the fixed rod 1, an arc-shaped limiting groove 4 is arranged at the bottom of the limiting block 3, a pin shaft 5 is fixed on the side edge of the limiting block 3, the lower end of a torsion spring 6 is fixedly connected on the pin shaft 5, the torsion spring 6 is positioned at the inner side of the buckle 7, the upper end of the torsion spring 6 is propped against the inner side of the buckle 7, the buckle 7 comprises a buckle bottom surface 8 and two buckle side surfaces 9, the two buckle side surfaces 9 have the same structure and size and are connected with the two sides of the buckle bottom surface 8, the middle part of the side surface 9 of the buckle is provided with an arc-shaped clamping groove 10, the upper part of the side surface 9 of the buckle is movably connected with a pin shaft 5, the side surface 9 of the buckle can rotate along the pin shaft 5, the arc-shaped clamping groove 10 is detachably provided with an underframe 12, and two sides of the underframe 12 are connected with the frame 2 through a rotating shaft 13.

Example 2

Preferably, stopper 3, buckle 7, torsional spring 6 and round pin axle 5 form the locking piece, and the locking piece is equipped with two pairs, and the symmetry is installed on dead lever 1.

Preferably, the bottom of the buckle 7 is provided with a limiting bush 14, the limiting bush 14 is fixed between the two buckle side surfaces 9 through a pin shaft I11, the bottom of the chassis 12 is fixed with a limiting piece 15, and the limiting piece 15 corresponds to the limiting bush 14 in position and is matched with the limiting bush to limit the chassis 12.

Preferably, the top of the bottom surface 8 of the buckle is of a handle structure.

The utility model discloses process flow and theory of operation do: when the wheelchair is folded, the handle structure at the top of the buckle 7 is pressed inwards, the buckle 7 compresses the torsion spring 6 and rotates along the pin shaft 5, at the moment, the arc-shaped clamping groove 10 in the middle of the buckle side surface 9 of the buckle 7 moves outwards to separate the arc-shaped clamping groove 10 from the bottom frame 12, and the bottom frame 12 rotates with the frame 2 through the rotating shaft 13, so that the frame 2 is vertically placed instead of horizontally placed, and the folding is realized; when the wheelchair is needed to be used, the underframe 12 is changed from a vertical state to a horizontal state, at the moment, one side of the underframe 2 moves upwards and enters the arc-shaped clamping groove 10 of the buckle 7, and the limiting bush 14 and the limiting piece 15 are pressed tightly under the action of the torsion spring 6, so that the underframe 12 is locked.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a wheelchair frame locking mechanical system, includes the dead lever, its characterized in that: the utility model discloses a safety lock, including dead lever, stopper, round pin axle, buckle bottom surface and buckle side, dead lever both ends fixed connection is on the frame, the dead lever bottom is fixed with the stopper piece, open the stopper bottom has the arc spacing groove, the stopper side is fixed with the round pin axle, sell epaxial fixed connection torsional spring lower extreme, the torsional spring is located the buckle inboard, the torsional spring upper end supports the buckle inboard, the buckle includes buckle bottom surface and two buckle sides, and two buckle side structure sizes are the same, connects in buckle bottom surface both sides, open at buckle side middle part has the arc draw-in groove, buckle side upper portion swing joint round pin axle, the buckle side can be followed the round pin axle and rotated, arc draw-.

2. A wheelchair frame locking mechanism as claimed in claim 1, wherein: stopper, buckle, torsional spring and round pin axle form the locking piece, and the locking piece is equipped with two pairs, and the symmetry is installed on the dead lever.

3. A wheelchair frame locking mechanism as claimed in claim 1, wherein: the bottom of the buckle is provided with a limiting bush, the limiting bush is fixed between the two sides of the buckle through a pin shaft I, a limiting piece is fixed at the bottom of the underframe, the limiting piece corresponds to the limiting bush in position, and the limiting piece and the limiting bush are matched with each other to realize limiting.

4. A wheelchair frame locking mechanism as claimed in claim 1, wherein: the top of the bottom surface of the buckle is of a handle structure.