Adjustable headrest device for wheelchair

Abstract

The adjustable headrest device comprises a headrest, a fixing piece and an adjusting piece, the upper end of the adjusting piece is rotationally connected with the headrest to achieve rotating adjustment of the headrest, the lower end of the adjusting piece is hinged to the fixing piece to achieve left-right swing adjustment of the headrest, the adjusting piece comprises a plurality of connecting joints, and the connecting joints are connected with the fixing piece. The connecting joints are hinged to achieve front-back position adjustment of the headrest. The fixing piece and the positioning piece are matched to achieve adjustment of the vertical height position of the headrest, swing adjustment of the left-right position of the headrest can be achieved through hinge joint between the adjusting piece and the fixing piece, and rotation adjustment of the headrest is achieved through the rotation connection relation between the adjusting piece and the headrest. The adjusting piece can adjust the front-back position of the headrest. Therefore, the multi-direction and multi-angle adjustment of the headrest can be realized, and the use effect of the product is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of wheelchair components, and specifically relates to an adjustable headrest device for wheelchairs. Background Technology

[0002] Currently, most wheelchair headrests on the market are fixed, with no adjustable angle or width. The inability to adjust the angle, in particular, affects the comfort of wheelchair use. This is because people's head tilt angles differ depending on their body size or sitting posture, but existing wheelchair headrests cannot be adjusted, thus failing to accommodate different head tilt angles and provide a more comfortable user experience.

[0003] Chinese patent CN208372048U discloses a wheelchair headrest mechanism, including an adjustable headrest, an adjustable mounting width fixing component, and a connector connecting the two. The fixing component includes a clamp. The connector mainly consists of a headrest welded component, a connecting assembly piece I, and a connecting welded component. The headrest welded component is connected to the headrest and is provided with a connecting assembly piece II. The connecting welded component is connected to the fixing component and is provided with a connecting assembly piece III. Connecting assembly piece II, connecting assembly piece I, and connecting assembly piece III are each composed of multiple parallel and spaced connecting pieces, and the three sets of connecting assembly pieces are connected sequentially. The connection method between adjacent sets of connecting assembly pieces is that the connecting pieces of one set of connecting assembly pieces overlap and intersect with the connecting pieces of another set of connecting assembly pieces.

[0004] The aforementioned patent allows for adjustment of the headrest's position in the left, right, front, back, up, and down directions, but its structure is relatively complex, and the headrest cannot be rotated. Utility Model Content

[0005] In view of the defects or deficiencies in the existing technology, the present invention aims to provide a multi-directional, multi-angle adjustable headrest device for wheelchairs.

[0006] The purpose of this application is achieved through the following technical solution:

[0007] An adjustable headrest device for a wheelchair includes a headrest, a fixing member, and an adjusting member. The upper end of the adjusting member is rotatably connected to the headrest to realize the rotational adjustment of the headrest, and the lower end of the adjusting member is hinged to the fixing member to realize the left-right swing adjustment of the headrest. The adjusting member includes multiple connecting joints, which are hinged to each other to realize the front-back position adjustment of the headrest.

[0008] Preferably, a positioning element is also included, into which the fixing element is inserted to achieve headrest height adjustment.

[0009] Preferably, there are four connecting joints, which are, from top to bottom, the first connecting joint, the second connecting joint, the third connecting joint and the fourth connecting joint.

[0010] Preferably, the positioning element includes a fixing plate, an adjusting tube, and a knob. The adjusting tube is welded to the fixing plate, the fixing element is inserted into the adjusting tube, and the knob is installed on the adjusting tube to fix the height of the fixing element.

[0011] Preferably, one end of the first connecting joint and both ends of the second, third and fourth connecting joints are provided with hinge holes. The connecting points of the first, second, third and fourth connecting joints are interspersed and the hinge holes of adjacent connecting joints are aligned. Adjacent connecting joints are connected by bolts passing through the hinge holes.

[0012] Preferably, the first connecting joint is horizontally arranged, the fourth connecting joint is vertically arranged, and the second and third connecting joints are inclined.

[0013] Preferably, the end of the first connecting joint is provided with a connecting ball head, and a ball head connector is fixed to the rear side of the head. The connecting ball head and the ball head connector are rotatably connected and limited by a ball head limiting member.

[0014] Preferably, the ball joint connector has a ball joint groove at its center, the head of the connecting ball joint is located in the ball joint groove, the ball joint limiting member is located at the tail of the connecting ball joint, and the ball joint limiting member and the ball joint connector are connected by bolts.

[0015] Compared with the prior art, this application has at least the following obvious advantages and effects:

[0016] In this invention, the fixing and positioning components work together to adjust the vertical height of the headrest. The hinge between the adjusting and fixing components allows for left-right swing adjustment of the headrest. The rotational connection between the adjusting component and the headrest enables rotational adjustment of the headrest itself. Furthermore, the adjusting component itself allows for front-back adjustment of the headrest. Therefore, this invention enables multi-directional and multi-angle adjustment of the headrest, thereby improving the product's usability.

[0017] Compared with existing adjustable headrests, this invention integrates support and adjustment on the same structure, and the connection between components is only fixed by bolts, making assembly convenient. The rotation of the headrest is achieved through a ball joint, thus making the structure simpler and easier to use. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural view of the present invention;

[0019] Figure 2This is a side view of the structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the adjusting component in this utility model;

[0021] Figure 4 This is a schematic diagram of the positioning component in this utility model;

[0022] Figure 5 This is an exploded view of the connection between the adjusting component and the headrest in this utility model;

[0023] List of components in this application:

[0024] 1. Headrest; 2. Fixing component; 3. Adjusting component; 4. Positioning component; 5. First connecting joint; 6. Second connecting joint; 7. Third connecting joint; 8. Fourth connecting joint; 9. Hinge hole; 10. Connecting ball head; 11. Ball head connector; 12. Ball head limiting component; 13. Ball head groove; 41. Fixing plate; 42. Adjusting tube; 43. Knob. Detailed Implementation

[0025] Specific embodiments of this application have been described in conjunction with the accompanying drawings and the following description to teach those skilled in the art how to make and use this application. For the purpose of teaching the principles of the application, the following conventional aspects have been simplified or omitted. Those skilled in the art should understand that variations derived from these embodiments fall within the scope of this application. Those skilled in the art should understand that the following features can be combined in various ways to form multiple variations of this application. Terms such as “upper,” “lower,” “left,” “right,” “middle,” and “one” used in this application are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model. Therefore, this application is not limited to the specific embodiments described below, but only to the claims and their equivalents.

[0026] like Figure 1 and Figure 2 As shown, this embodiment relates to an adjustable headrest device for a wheelchair, which includes a headrest 1, a fixing member 2, and an adjusting member 3. The upper end of the adjusting member 3 is rotatably connected to the headrest 1 to realize the rotational adjustment of the headrest 1. In this application, the headrest 1 can rotate 360 ​​degrees. The lower end of the adjusting member 3 is hinged to the fixing member 2 to realize the left and right swing adjustment of the headrest 1. The adjusting member 3 includes multiple connecting joints, which are hinged to each other to realize the front and back position adjustment of the headrest 1.

[0027] Figure 1 and Figure 4As shown, it also includes a positioning component 4, which is mainly used to fix the height position of the fixing component 2. The fixing component 2 is inserted into the positioning component 4 to achieve the height adjustment of the headrest. Specifically, for easy adjustment, the positioning component 4 includes a fixing plate 41, an adjusting tube 42, and a knob 43. The adjusting tube 42 is welded to the fixing plate 41, the fixing component 2 is inserted into the adjusting tube 42, and the knob 43 is installed on the adjusting tube 42 to fix the height of the fixing component 2. The adjusting tube 42 is made of square or round tube, and the fixing component 2 is made of square or round steel. During use, when the knob 43 is tightened, the bolt of the knob 43 passes through the wall of the adjusting tube 42 and abuts against the fixing component 2 inside the tube.

[0028] like Figure 2 and Figure 3 As shown in the embodiment of this application, there are four connecting joints, which are, from top to bottom, a first connecting joint 5, a second connecting joint 6, a third connecting joint 7, and a fourth connecting joint 8. Specifically, one end of the first connecting joint 5 and both ends of the second connecting joint 6, the third connecting joint 7, and the fourth connecting joint 8 are provided with hinge holes 9. The connection points of the first connecting joint 5, the second connecting joint 6, the third connecting joint 7, and the fourth connecting joint 8 are interleaved, and the hinge holes 9 of adjacent connecting joints are aligned. Adjacent connecting joints are connected by bolts passing through the hinge holes 9.

[0029] The first connecting joint 5 is horizontally positioned, the fourth connecting joint 8 is vertically positioned, and the lower end of the fourth connecting joint 8 is hinged to the fixing member 2. The second and third connecting joints are inclined. The hinges between the first connecting joint 5, the second connecting joint 6, the third connecting joint 7, and the fourth connecting joint 8 allow for forward and backward rotation, while the hinge between the lower end of the fourth connecting joint 8 and the fixing member 2 allows for left and right rotation. Therefore, the adjustment between the first connecting joint 5, the second connecting joint 6, the third connecting joint 7, and the fourth connecting joint 8 allows for the forward and backward adjustment of the headrest 1, while the hinge between the fourth connecting joint 8 and the fixing member 2 allows for the left and right adjustment of the headrest 1.

[0030] like Figure 3 and Figure 5 As shown in the embodiment of this application, the end of the first connecting joint 5 is provided with a connecting ball head 10, and a ball head connector 11 is fixed to the rear side of the head rest 1. The connecting ball head 10 and the ball head connector 11 are rotatably connected and limited by the ball head limiting member 12. The ball head connector 11 has a ball head groove 13 at its center, the head of the connecting ball head 10 is located in the ball head groove 13, the ball head limiting member 12 is provided at the tail of the connecting ball head 10, and the ball head limiting member 12 and the ball head connector 11 are connected by bolts.

[0031] As those skilled in the art will readily conceive, any modifications, equivalent substitutions, improvements, etc., made using the concept and principles of this application should be included within the scope of the claims of this application.

Claims

1. An adjustable headrest device for a wheelchair, characterized in that, It includes a headrest, a fixing component, and an adjusting component. The upper end of the adjusting component is rotatably connected to the headrest to realize the rotation adjustment of the headrest, and the lower end of the adjusting component is hinged to the fixing component to realize the left and right swing adjustment of the headrest. The adjusting component includes multiple connecting joints, which are hinged to each other to realize the front and back position adjustment of the headrest.

2. The adjustable headrest device for a wheelchair according to claim 1, characterized in that, It also includes a positioning element, into which the fixing element is inserted to achieve headrest height adjustment.

3. The adjustable headrest device for a wheelchair according to claim 1, characterized in that, The aforementioned connecting joints are four in number, from top to bottom: the first connecting joint, the second connecting joint, the third connecting joint, and the fourth connecting joint.

4. The adjustable headrest device for a wheelchair according to claim 2, characterized in that, The positioning component includes a fixing plate, an adjusting tube, and a knob. The adjusting tube is welded to the fixing plate, the fixing component is inserted into the adjusting tube, and the knob is installed on the adjusting tube to fix the height of the fixing component.

5. The adjustable headrest device for a wheelchair according to claim 3, characterized in that, Hinge holes are provided at one end of the first connecting joint and at both ends of the second, third and fourth connecting joints. The connecting points of the first, second, third and fourth connecting joints are interspersed and the hinge holes of adjacent connecting joints are aligned. Adjacent connecting joints are connected by bolts passing through the hinge holes.

6. The adjustable headrest device for a wheelchair according to claim 3, characterized in that, The first connecting joint is horizontally positioned, the fourth connecting joint is vertically positioned, and the second and third connecting joints are inclined.

7. The adjustable headrest device for a wheelchair according to claim 3, characterized in that, The end of the first connecting joint is provided with a connecting ball head, and a ball head connector is fixed to the rear side of the head. The connecting ball head and the ball head connector are rotatably connected and limited by the ball head limiting member.

8. The adjustable headrest device for a wheelchair according to claim 7, characterized in that, The ball joint connector has a ball joint groove at its center, the head of the connecting ball joint is located in the ball joint groove, the ball joint limiting member is located at the tail of the connecting ball joint, and the ball joint limiting member and the ball joint connector are connected by bolts.

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