CN209847619U

CN209847619U - Sliding armrest mechanism and wheelchair

Info

Publication number: CN209847619U
Application number: CN201920056508.1U
Authority: CN
Inventors: 章伯伦
Original assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd
Current assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd
Priority date: 2019-01-14
Filing date: 2019-01-14
Publication date: 2019-12-27
Anticipated expiration: 2029-01-14

Abstract

The embodiment of the utility model relates to a slip handrail mechanism and wheelchair. The sliding armrest mechanism comprises an armrest supporting piece, an armrest and a clamping piece; the upper surface of the handrail is provided with a handrail groove, the clamping piece is arranged in the handrail groove, and the handrail can be elastically clamped on the clamping piece in a front-back sliding manner through the handrail groove; the bottom of handrail recess is provided with the handrail spout along the length direction of handrail, joint spare is through handrail spout fixed connection on handrail support piece, the handrail can be defined in with sliding back and forth between joint spare and handrail support piece. The sliding handrail mechanism is simple and reliable in structure and convenient to maintain, and a user can conveniently control the handrail to slide forwards and backwards according to needs.

Description

Sliding armrest mechanism and wheelchair

Technical Field

The utility model relates to a sliding armrest mechanism and a wheelchair with the sliding armrest mechanism.

Background

In the prior art, the armrests of the wheelchair are generally fixed, the condition that the length of the armrests is not matched with the body parameters of a user often occurs, and when the length of the armrests is short, the comfort degree of some users is not enough; the long length of the handrail causes inconvenience in many application scenarios. For an electric wheelchair, a wheelchair controller is arranged in front of the armrests and fixed on the sleeves below the armrests. The user fixes the sleeve pipe in the handrail below through the adjustment according to arm length, finely tunes around to the controller, adjusts to suitable position after, needs the manual screw of screwing up and locks the sleeve pipe and fix. This type of adjustment has two drawbacks, on the one hand, the adjustment back and forth requires manually removing or screwing the screws that secure the sleeve, which is not convenient to adjust at any time, and on the other hand, because the armrest is stationary, when the controller is adjusted forward and farther away from the armrest, the gap between the controller and the armrest increases, the support of the armrest on the hands decreases, and user comfort decreases.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problem, an embodiment of the present invention provides a sliding armrest mechanism, including an armrest support member, an armrest, and a clip member; the upper surface of the handrail is provided with a handrail groove, the clamping piece is arranged in the handrail groove, and the handrail can be elastically clamped on the clamping piece in a front-back sliding manner through the handrail groove; the bottom of handrail recess is provided with the handrail spout along the length direction of handrail, joint spare is through handrail spout fixed connection on handrail support piece, the handrail can be defined in with sliding back and forth between joint spare and handrail support piece.

Furthermore, one or more protruding limiting fixing columns are arranged on the upper end face of the armrest supporting piece, the limiting fixing columns penetrate through the armrest sliding groove, and the clamping piece is fixedly connected with the limiting fixing columns; or, handrail support piece's up end is provided with one or more support piece fixed orifices, and spacing mounting passes the handrail spout from the upper surface of joint spare, through support piece fixed orifices with joint spare fixed connection on handrail support piece.

Furthermore, the handrail groove is provided with a first inner wall and a second inner wall which extend in the length direction of the handrail groove, and the first inner wall is provided with a first sawtooth groove; the clamping piece comprises a clamping piece main body and a first elastic part, the first elastic part is connected to the clamping piece main body and arranged on one side of the clamping piece main body, and the first elastic part is provided with a first protruding part opposite to the first sawtooth groove; the first protruding part is pressed in one groove of the first sawtooth groove.

Further, still be provided with the second sawtooth groove symmetrical with first sawtooth groove on the second inner wall, the elastic component still includes second elastic component, second elastic component sets up with first elastic component symmetrically the opposite side of joint spare main part, second elastic component has relative with second sawtooth groove, with the second protruding portion of first protruding portion symmetry, the second protruding portion support press in a recess of second sawtooth groove.

Further, joint spare main part is roughly the I-shaped, including first end, second end and the connecting portion of connecting first end and second end, first elastic component and second elastic component symmetry set up in the both sides of the connecting portion of I-shaped main part, are connected with the I-shaped main part, first elastic component and second elastic component respectively with have the clearance between the connecting portion.

Further, the first elastic part and the second elastic part are both in a splayed shape.

Further, the first sawtooth groove and the second sawtooth groove are formed by a plurality of continuous semi-cylindrical grooves.

Further, the sliding armrest mechanism further comprises an armrest upper cover, and the armrest upper cover is arranged on the upper surface of the armrest.

The embodiment of the utility model provides a still provide a wheelchair, including one of above-mentioned slip handrail mechanism, the handrail support piece and the wheelchair fixed connection of slip handrail mechanism.

Further, the wheelchair is an electric wheelchair, the electric wheelchair comprises a wheelchair controller, and the wheelchair controller is arranged in front of the armrests.

The utility model discloses beneficial effect of embodiment: the embodiment of the utility model provides a slip handrail mechanism, simple structure is reliable, and it is convenient to maintain, and the user slides around can conveniently controlling the handrail as required.

Drawings

FIG. 1 is a schematic view of a wheelchair according to an embodiment of the present invention;

fig. 2 is an assembly schematic view of a sliding armrest mechanism according to an embodiment of the present invention;

fig. 3 is an exploded view of a sliding armrest mechanism according to an embodiment of the present invention;

fig. 4 is a side view of the sliding armrest mechanism according to the embodiment of the present invention in the state of sliding the armrest to the front;

fig. 5 is a side view of the sliding armrest mechanism according to the embodiment of the present invention in a state where the armrest slides to the rear;

fig. 6 is a top view of the sliding armrest mechanism according to the embodiment of the present invention in the front state;

fig. 7 is a top view of a sliding armrest mechanism according to an embodiment of the present invention, illustrating an armrest sliding to a rear position.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the present invention is not limited to the drawings and the following embodiments. In the description of the present invention, it should be noted that the terms "longitudinal direction", "width direction", "upper", "lower", "front", "rear", "bottom", "side", and the like, which refer to the orientation or position relationship, are only used for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and should not be construed as limiting the specific scope of the present invention.

The embodiment of the utility model discloses a sliding handrail mechanism, which comprises a handrail supporting piece, a handrail and a clamping piece; the upper surface of the handrail is provided with a handrail groove, the clamping piece is arranged in the handrail groove, and the handrail can be elastically clamped on the clamping piece in a front-back sliding manner through the handrail groove; the bottom of handrail recess is provided with the handrail spout along the length direction of handrail, joint spare is through handrail spout fixed connection on handrail support piece, the handrail can be defined in with sliding back and forth between joint spare and handrail support piece.

Specifically, referring to fig. 1 to 7, an embodiment of the present invention provides a sliding armrest mechanism, which includes an armrest support member 1, a clip member 2, and an armrest 3.

The armrest support 1 is for supporting an armrest 2 and has an upper end surface. In one embodiment, one or more position fixing posts 11 protrude upward from the upper end of the armrest support 2. In another embodiment, the upper end surface of the armrest support member 2 is provided with a support member fixing hole.

The clip 2, for example made of plastic, includes a clip main body 21 and an elastic portion 22, the clip main body 21 is substantially i-shaped, and includes a first end portion 211, a second end portion 212 and a connecting portion 213 connecting the first end portion 211 and the second end portion 212, and the clip 2 further has a clip fixing hole 214 corresponding to the limiting fixing post 11 on the armrest support 1.

The elastic portion 22 includes a first elastic portion 221 and a second elastic portion 222, the first elastic portion 221 and the second elastic portion 222 are symmetrically disposed at two sides of the connecting portion of the i-shaped main body and connected to the i-shaped main body, and a gap is formed between each of the first elastic portion 221 and the connecting portion 213 and between each of the second elastic portion 222 and the connecting portion.

The first elastic part 221 and the second elastic part 222 are each substantially in a figure-eight shape, the first elastic part 221 has a first protruding part 2211 protruding outward of the i-shaped body in the middle thereof, the second elastic part 222 has a second protruding part 2221 protruding outward of the i-shaped body in the middle thereof, and the first protruding part 2211 and the second protruding part 2221 each protrude beyond the side parts of both end parts of the i-shaped body.

The handrail 3 is substantially in a strip shape, a handrail groove 31 which is substantially in a strip shape and is used for accommodating the clamping piece 2 is arranged in the middle of the upper surface of the handrail 3 along the length direction of the handrail 3, the handrail groove 31 is provided with a first inner wall 311 and a second inner wall 312 which extend along the length direction of the handrail, a first sawtooth groove 3111 is arranged in the middle of the first inner wall 311 along the length direction of the handrail, the first serrated groove 3111 is formed of a plurality of continuous semi-cylindrical grooves, the middle portion of the second inner wall 312 is provided with a second serrated groove 3121 symmetrically to the first serrated groove 3111 along the length direction of the handrail, the second serrated groove 3121 is formed of a plurality of continuous semi-cylindrical grooves, the grooves of the first serrated groove 3111 and the second serrated groove 3121 extend in the up-down direction, and the widths of the first serrated groove 3111 and the second serrated groove 3121 in the length direction of the handle 2 are substantially the same as the widths of the first protruding portion 2211 of the first elastic part 221 and the second protruding portion 2221 of the second elastic part 222 in the length direction of the handle.

The bottom of the handrail groove 31 is provided with a long handrail sliding groove 313 which penetrates the handrail up and down along the length direction of the handrail, and the width of the handrail sliding groove 313 is smaller than that of the handrail groove 31.

When the upper end surface of the armrest support member 1 is provided with the limiting fixing post 11, the width of the armrest sliding chute 313 matches with the width of the limiting fixing post 11, so that when the limiting fixing post 11 is inserted into the armrest sliding chute 313, the armrest 2 can slide back and forth along the limiting fixing post 11 (for example, referring to the direction shown in fig. 3, the direction a-a is the length direction, and also the front and back direction, and the direction B-B is the width direction). The limit fixing posts 11 limit the sliding direction of the handrail 2.

When the upper end face of the armrest support member 1 is provided with the support member fixing hole, a limit fixing member, such as a bolt, may be used to fix the clip 2 on the armrest support member 1 through the clip fixing hole 214, the armrest chute 313, and the support member fixing hole on the clip 2, so that the armrest 2 can slide back and forth along the limit fixing member. The limit fixings define the sliding direction of the handrail 2.

After the armrest mechanism of this embodiment is assembled, the limit fixing column 11 of the armrest support member 1 passes through the armrest sliding slot 313, the engaging member 2 is fixed on the limit fixing column 11 of the armrest support member 1 through the engaging member fixing hole 214, the armrest 3 is located between the armrest support member 1 and the engaging member 2, the first protruding portion 2211 of the first elastic portion 221 is embedded into and presses against the groove of the first sawtooth slot 3111, the second protruding portion 2221 of the second elastic portion 222 is embedded into and presses against the groove of the second sawtooth slot 3121, therefore, the engaging member 2 and the armrest 3 are slidably and elastically engaged and engaged, the first sawtooth slot 3111 on the armrest groove 31 and each groove of the second sawtooth slot 3121 form a detent, the two protruding portions of the two elastic portions of the engaging member 2 are respectively embedded into and press against a pair of opposite grooves of the two sawtooth slots, since the elastic portion of the engaging member 2 has elasticity, deformation can occur, when pushing and pulling the armrest, relative motion can take place between two sawtooth grooves and the joint spare 2 on the handrail 3, the adjacent a pair of relative recess of handrail 3 in order with two protruding portions joint of joint spare 2 to make handrail 3 slide around can, and, when the protruding portion of joint spare 2 supports to press in the recess of sawtooth groove, the recess has limiting displacement, handrail 3 can keep the position stable this moment, and when only exerting external force, the handrail just can slide around.

Preferably, the armrest of the present embodiment further includes an armrest cover 4 disposed on an upper surface of the armrest 3. The handrail mechanism can be more attractive due to the arrangement of the handrail cover, and a user can more comfortably place the arm.

The essence of the utility model lies in that the elastic clamping fit between the joint piece fixed on the handrail support piece and having the elastic part and the handrail can slide back and forth. Those skilled in the art will understand that the mechanical structure is various and is difficult to exhaust, and the present invention is not limited by the above embodiments and the accompanying drawings. For example, in one embodiment, the snap member has an elastic portion, and accordingly, the inner wall of the handrail groove has a serrated groove; in another embodiment, there is no gap between the elastic part and the main body of the clamping piece, the elastic part itself can be elastically deformed, and the armrest can slide back and forth by using the elastic deformation of the elastic part itself. Other technical features, such as the shape of the body of the clip, the shape of the elastic portion of the clip, the shape of the serrated groove, the fixing manner between the clip and the armrest support, etc., are not limited to the shapes of the above-described embodiments.

The embodiment of the utility model provides a still provide a wheelchair, the wheelchair includes above-mentioned slip handrail mechanism, handrail support piece and wheelchair fixed connection.

Preferably, the wheelchair is an electric wheelchair, the electric wheelchair comprises a wheelchair controller, and the wheelchair controller is arranged in front of the armrests.

The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sliding armrest mechanism is characterized by comprising an armrest supporting piece, an armrest and a clamping piece; the upper surface of the handrail is provided with a handrail groove, the clamping piece is arranged in the handrail groove, and the handrail can be elastically clamped on the clamping piece in a front-back sliding manner through the handrail groove; the bottom of handrail recess is provided with the handrail spout along the length direction of handrail, joint spare is through handrail spout fixed connection on handrail support piece, the handrail can be defined in with sliding back and forth between joint spare and handrail support piece.

2. The sliding armrest mechanism according to claim 1, wherein one or more protruding fixing posts are disposed on an upper end surface of the armrest support member, the fixing posts are inserted into the armrest sliding groove, and the engaging member is fixedly connected to the fixing posts; or,

the upper end face of the handrail supporting piece is provided with one or more supporting piece fixing holes, the limiting fixing piece penetrates through the handrail sliding groove from the upper surface of the clamping piece, and the clamping piece is fixedly connected onto the handrail supporting piece through the supporting piece fixing holes.

3. A sliding armrest mechanism as set forth in claim 2, wherein said armrest well has a first inner wall and a second inner wall extending in a lengthwise direction thereof, the first inner wall being provided with a first serrated groove;

the clamping piece comprises a clamping piece main body and a first elastic part, the first elastic part is connected to the clamping piece main body and arranged on one side of the clamping piece main body, and the first elastic part is provided with a first protruding part opposite to the first sawtooth groove;

the first protruding part is pressed in one groove of the first sawtooth groove.

4. The sliding armrest mechanism of claim 3 wherein the second inner wall further comprises a second serrated slot symmetrical to the first serrated slot, the elastic member further comprises a second elastic member symmetrically disposed on the other side of the clip body with respect to the first elastic member, the second elastic member has a second protrusion opposite to the second serrated slot and symmetrical to the first protrusion, and the second protrusion abuts against a recess of the second serrated slot.

5. The sliding armrest mechanism of claim 4, wherein the clip body is substantially I-shaped and includes a first end portion, a second end portion, and a connecting portion connecting the first end portion and the second end portion, wherein the first elastic portion and the second elastic portion are symmetrically disposed on two sides of the connecting portion of the I-shaped body and are connected to the I-shaped body, and a gap is formed between each of the first elastic portion and the second elastic portion and the connecting portion.

6. A sliding armrest mechanism as claimed in claim 5, wherein said first and second resilient portions are each generally splayed.

7. A sliding armrest mechanism as claimed in claim 4 or claim 5, wherein said first and second serrated slots are each formed by a plurality of continuous semi-cylindrical recesses.

8. A sliding armrest mechanism as set forth in claim 1 further comprising an armrest lid disposed on an upper surface of said armrest.

9. A wheelchair comprising a sliding armrest mechanism as claimed in any one of claims 1 to 8, the armrest support of the sliding armrest mechanism being fixedly connected to the wheelchair.

10. The wheelchair of claim 9 wherein the wheelchair is an electric wheelchair including a wheelchair controller disposed in front of an armrest.