Lifting adjusting device for neck cushion of wheelchair

Abstract

The utility model discloses a lifting adjusting device for a wheelchair neck cushion, and relates to the technical field of wheelchair neck cushions. The upper side of the backup plate is slidably matched with a mounting seat, the mounting seat is rotatably matched with an adjusting handle bolt which is in threaded fit with the backup plate, one side of the mounting seat is provided with a back cushion, two opposite sides of the mounting seat are slidably matched with U-shaped side plate frames, and one end of each U-shaped side plate frame is provided with a side cushion. The adjusting handle bolts are rotated to drive the guide protrusions to slide in the guide grooves, the heights of the rear cushion and the side cushions are conveniently and rapidly adjusted, people with different heights can conveniently lean against the chair, by arranging the side cushions, a user can conveniently lean against the side cushions, and the two U-shaped side plate frames are driven to slide oppositely by rotating the adjusting mechanism. And the side cushions are driven to relatively horizontally slide on the side of the rear cushion, so that the two side cushions are convenient to adjust, the side leaning range of a user is convenient to adjust, the posture leaning range is convenient to improve, and the comfort of the user is convenient to improve.

Description

Technical Field

[0001] The utility model belongs to the field of wheelchair neck cushions, and in particular relates to a lifting and adjusting device for a wheelchair neck cushion. Background Art

[0002] Wheelchairs are important tools for rehabilitation. They are not only a means of transportation for people with limb disabilities and mobility impairments, but more importantly, they enable them to exercise and participate in social activities with the help of wheelchairs. Ordinary wheelchairs are generally composed of four parts: wheelchair frame, wheels, brake device and seat. Manual wheelchairs are based on ordinary wheelchairs, with a manual device added. The existing structure of the wheelchair neck cushion is generally fixed, which makes it inconvenient for users of different heights to use.

[0003] A Chinese patent with publication number CN209548259U discloses a wheelchair neck cushion lifting and adjusting device. When in use, the user first sits on the wheelchair body, then pulls the fixed rod out of the handle through the rotating rod, and then rotates the rotating rod and the fixed rod to drive the rotation of the connecting plate and the rotating shaft. The rotation of the rotating shaft drives the rotation of the first winding wheel, and then starts to store the steel wire. The steel wire is pulled out from the second winding wheel after the fixed pulley is reversed, and then drives the rotation of the second winding wheel and the tightening of the spring. The rotation of the second winding wheel drives the rise of the threaded rod, and the rise of the threaded rod drives the rise of the cushion. The user can adjust the wheelchair according to his or her own height, and then insert the fixing rod into the connecting groove to fix it. When not in use, the fixing rod can be directly pulled out. Due to the energy storage effect of the spring, the second winding wheel starts to rotate in the opposite direction, causing the threaded rod to drop and the steel wire to be recovered at the same time. The utility model has a simple structure and is easy to use. After the user sits on the wheelchair, he or she can adjust it according to his or her own height. It is convenient and practical. At the same time, the automatic recovery setting can facilitate the next use. The wheelchair neck cushion lifting and adjustment device in this application is that the cushion is only suitable for leaning back and not for leaning sideways. Leaning back for a long time is prone to posture fatigue.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a lifting and adjusting device for a wheelchair neck cushion.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0007] A wheelchair neck cushion lifting and adjustment device comprises a backrest plate, a mounting seat is slidably engaged on the upper side of the backrest plate, an adjustment handle bolt which is rotatably engaged with the backrest plate thread is rotatably engaged on the mounting seat, a rear backrest pad is arranged on one side of the mounting seat, U-shaped side plate frames are slidably engaged on opposite sides of the mounting seat, a side backrest pad is arranged at one end of the U-shaped side plate frame, the side backrest pad is slidably engaged on one side of the rear backrest pad, and an adjustment mechanism for adjusting the two U-shaped side plate frames to slide toward each other is arranged on the mounting seat.

[0008] Optionally, a guide groove is provided on the upper side of the back plate, a guide protrusion is provided on the bottom end of the mounting seat, and the guide protrusion is slidably fitted in the guide groove, a first bearing is embedded on the upper side of the mounting seat, a smooth curved surface is provided on the outer side of the upper end of the adjusting handle bolt, and the upper end of the adjusting handle bolt is fixed in the first bearing, so as to improve the stability of the mounting seat sliding on the back plate.

[0009] Optionally, a guide groove is provided on one side of the mounting seat, and one end of the U-shaped side panel frame is slidably fitted in the guide groove, so as to improve the sliding stability of the U-shaped side panel frame.

[0010] Optionally, the adjusting mechanism includes a bidirectional threaded rod rotatably engaged in the guide groove, a first bevel gear mounted on the bidirectional threaded rod, and an adjusting handle rotatably engaged on the upper side of the mounting seat, the adjusting handle extending into the guide groove is provided with a second bevel gear meshing with the first bevel gear, the threads at both ends of the bidirectional threaded rod have opposite directions, and the two ends of the bidirectional threaded rod are respectively engaged with the threads of two U-shaped side plate frames, so that the first bevel gear and the bidirectional threaded rod can be driven to rotate through the second bevel gear by rotating the adjusting handle.

[0011] Optionally, a bearing seat is provided in the guide channel, a second bearing is provided in the bearing seat, a smooth curved surface is provided on the outer side of the middle part of the bidirectional threaded rod, and the middle part of the bidirectional threaded rod is fixed in the second bearing, so as to improve the rotation stability of the bidirectional threaded rod through the second bearing.

[0012] Optionally, a seat plate is provided at the bottom end of the backrest, four supporting legs with wheels are provided at the bottom end of the seat plate, and two armrests are provided on the upper side of the seat plate to facilitate the user to lean his hands on the armrests.

[0013] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art. Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described below at the same time:

[0014] By turning the adjusting handle bolt to drive the guide protrusion to slide in the guide groove, the height of the rear cushion and the side cushion can be quickly adjusted to accommodate people of different heights leaning back. By providing the side cushions, it is convenient for users to lean sideways. By turning the adjusting mechanism, the two U-shaped side panels can be driven to slide toward each other, and the side cushions can be driven to slide relatively horizontally on the sides of the rear cushion, so that the cushions on both sides can be adjusted, the range of side leaning of the user can be adjusted, the range of body leaning can be increased, and the comfort of the user can be improved.

[0015] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;

[0018] Figure 2 This is a schematic cross-sectional view of an embodiment of the utility model;

[0019] Figure 3 This is a schematic cross-sectional structural diagram of a mounting base according to an embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the mounting base structure of an embodiment of the utility model;

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] Back plate 1, guide groove 101, seat plate 102, wheel support leg 103, armrest 104, mounting seat 2, guide protrusion 201, guide groove 202, bearing seat 203, second bearing 204, adjustment handle bolt 3, rear back cushion 4, U-shaped side plate frame 5, side back cushion 7, adjustment mechanism 8, bidirectional threaded rod 801, first bevel gear 802, adjustment handle 803, second bevel gear 804.

[0023] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0024] The utility model will now be further described in detail with reference to the accompanying drawings.

[0025] See also Figure 1-4 As shown, in the present embodiment, a wheelchair neck cushion lifting and adjusting device is provided, comprising a backrest plate 1, a mounting seat 2 is slidably fitted on the upper side of the backrest plate 1, an adjusting handle bolt 3 which is rotatably fitted with the backrest plate 1 thread is rotatably fitted on the mounting seat 2, a rear cushion 4 is provided on one side of the mounting seat 2, U-shaped side panel frames 5 are slidably fitted on opposite sides of the mounting seat 2, a side cushion 7 is provided at one end of the U-shaped side panel frame 5, the side cushion 7 is slidably fitted on one side of the rear cushion 4, and an adjusting mechanism 8 for adjusting the two U-shaped side panel frames 5 to slide toward each other is provided on the mounting seat 2.

[0026] By rotating the adjustment handle bolt 3 to drive the guide protrusion 201 to slide in the guide groove 101, the height of the rear cushion 4 and the side cushion 7 can be quickly adjusted to accommodate people of different heights leaning back. By providing the side cushion 7, it is convenient for the user to lean sideways. By rotating the adjustment mechanism 8, the two U-shaped side plate frames 5 can be driven to slide toward each other, and the side cushions 7 can be driven to slide relatively horizontally on the sides of the rear cushion 4, so that the side cushions 7 on both sides can be adjusted, the side leaning range of the user can be adjusted, the posture leaning range can be increased, and the user's comfort can be improved.

[0027] In this embodiment, a guide groove 101 is provided on the upper side of the backrest 1, and a guide protrusion 201 is provided at the bottom end of the mounting seat 2, and the guide protrusion 201 is slidably fitted in the guide groove 101, and a first bearing is embedded in the upper side of the mounting seat 2, and a smooth curved surface is provided on the outer side of the upper end of the adjusting handle bolt 3, and the upper end of the adjusting handle bolt 3 is fixed in the first bearing, so as to improve the stability of the mounting seat 2 in sliding on the backrest 1 and to adjust the height of the rear cushion 4.

[0028] A guide groove 202 is provided on one side of the mounting seat 2 of the present embodiment, and one end of the U-shaped side plate frame 5 is slidably fitted in the guide groove 202, so as to improve the sliding stability of the U-shaped side plate frame 5 and the sliding stability of the side support pad 7.

[0029] The adjustment mechanism 8 of this embodiment includes a bidirectional threaded rod 801 rotatably engaged in the guide groove 202, a first bevel gear 802 mounted on the bidirectional threaded rod 801, and an adjustment handle 803 rotatably engaged on the upper side of the mounting seat 2. The adjustment handle 803 extends into the guide groove 202 and one end is provided with a second bevel gear 804 meshing with the first bevel gear 802. The threads at both ends of the bidirectional threaded rod 801 are in opposite directions. The two ends of the bidirectional threaded rod 801 are respectively threadedly engaged with the two U-shaped side plate frames 5, so that the first bevel gear 802 and the bidirectional threaded rod 801 can be driven to rotate through the second bevel gear 804 by rotating the adjustment handle 803, and the bidirectional threaded rod 801 drives the two U-shaped side plate frames 5 to slide toward each other.

[0030] A bearing seat 203 is provided in the guide groove 202 of this embodiment, and a second bearing 204 is provided in the bearing seat 203. A smooth curved surface is provided on the outer side of the middle part of the bidirectional threaded rod 801, and the middle part of the bidirectional threaded rod 801 is fixed in the second bearing 204, so as to improve the rotation stability of the bidirectional threaded rod 801 through the second bearing 204, and to improve the sliding stability of the side support pad 7.

[0031] A seat plate 102 is provided at the bottom end of the backrest 1 of the present embodiment, and four wheeled support legs 103 are provided at the bottom end of the seat plate 102. Two armrests 104 are provided on the upper side of the seat plate 102 to facilitate the user to lean their hands on the armrests 104, thereby improving the user's comfort.

[0032] Working principle: Rotate the adjusting handle bolt 3 to drive the guide protrusion 201 to slide in the guide groove 101, so as to quickly adjust the height of the rear cushion 4 and the side cushion 7, so as to adapt to people of different heights leaning back. By setting the side cushion 7, it is convenient for the user to lean sideways, rotate the adjusting mechanism 8, rotate the adjusting handle 803 to drive the first bevel gear 802 and the two-way threaded rod 801 to rotate through the second bevel gear 804, and the two-way threaded rod 801 drives the two U-shaped side plate frames 5 to slide toward each other, and drives the side cushions 7 to slide relatively horizontally on the sides of the rear cushion 4, so as to facilitate the adjustment of the two side cushions 7, the side leaning range of the user, the range of body posture leaning, and the comfort of the user.

[0033] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0034] The present invention is not limited to the above-mentioned implementation modes. Anyone should be aware of the structural changes made under the inspiration of the present invention. Any technical solution that is the same or similar to the present invention falls within the protection scope of the present invention. The technology, shape, and structure that are not described in detail in the present invention are all known technologies.

Claims

1. A wheelchair neck cushion lifting and adjusting device, characterized in that: include: A backrest plate (1) is provided, and a mounting seat (2) is slidably engaged on the upper side of the backrest plate (1); an adjusting handle bolt (3) is rotatably engaged with the backrest plate (1) threadedly engaged on the mounting seat (2); a rear cushion (4) is provided on one side of the mounting seat (2); U-shaped side plate frames (5) are slidably engaged on opposite sides of the mounting seat (2); a side cushion (7) is provided at one end of the U-shaped side plate frame (5); the side cushion (7) is slidably engaged on one side of the rear cushion (4); and an adjusting mechanism (8) for adjusting the two U-shaped side plate frames (5) to slide toward each other is provided on the mounting seat (2).

2. A wheelchair neck cushion lifting and adjusting device according to claim 1, characterized in that: A guide groove (101) is provided on the upper side of the backing plate (1), a guide protrusion (201) is provided on the bottom end of the mounting seat (2), and the guide protrusion (201) is slidably fitted in the guide groove (101).

3. The wheelchair neck cushion lifting and adjusting device according to claim 1, characterized in that: A guide groove (202) is provided on one side of the mounting seat (2), and one end of the U-shaped side plate frame (5) is slidably fitted in the guide groove (202).

4. The wheelchair neck cushion lifting and adjusting device according to claim 3, characterized in that: The adjusting mechanism (8) comprises a bidirectional threaded rod (801) rotatably engaged in the guide groove (202), a first bevel gear (802) mounted on the bidirectional threaded rod (801), and an adjusting handle (803) rotatably engaged on the upper side of the mounting seat (2); one end of the adjusting handle (803) extending into the guide groove (202) is provided with a second bevel gear (804) meshing with the first bevel gear (802); and both ends of the bidirectional threaded rod (801) are respectively threadedly engaged with two U-shaped side plate frames (5).

5. The wheelchair neck cushion lifting and adjusting device according to claim 4, characterized in that: A bearing seat (203) is arranged in the guide channel (202), a second bearing (204) is arranged in the bearing seat (203), and the middle part of the bidirectional threaded rod (801) is fixed in the second bearing (204).

6. The wheelchair neck cushion lifting and adjusting device according to claim 1, characterized in that: A seat plate (102) is provided at the bottom end of the backrest (1), four wheeled support legs (103) are provided at the bottom end of the seat plate (102), and two armrests (104) are provided on the upper side of the seat plate (102).

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