Chair seat and chair back mounting structure of medical care wheelchair

Abstract

The utility model provides a chair seat and chair back mounting structure of a medical care wheelchair, and relates to the technical field of wheelchairs. The number of the chair side frames is two, the rear ends of the bottoms of the chair side frames are connected with the chair back plate, and the chair back plate is connected with the two chair side frames. The rear ends of the tops of the chair side frames are connected with connecting rods, the rear ends of the connecting rods are connected with the chair back plate, and the chair back plate is connected with the two connecting rods; the bottoms of the chair side frames are connected with a chair seat plate, and the chair seat plate is located in the middle of the two chair side frames; the chair side frames are sleeved with movable sliding sleeves, the bottoms of the movable sliding sleeves are connected with positioning insertion columns, and the positioning insertion columns are connected with the chair side frames and the connecting rods. When the chair back plate is adjusted to a proper angle, the inner connecting hole and the outer connecting hole are in a communicated state, the movable sliding sleeve moves after being influenced by the thrust of the spring, and the movable sliding sleeve drives the positioning inserting column to move upwards, so that the top end of the positioning inserting column is inserted into the inner connecting hole, and the connecting rod is fixed through the positioning inserting column; and the stability of the adjusted state of the chair back plate is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of wheelchairs, in particular to a seat and backrest mounting structure of a medical care wheelchair. Background Art

[0002] Wheelchairs are an important tool for rehabilitation. They are not only a means of transportation for people with physical disabilities and mobility difficulties, but more importantly, they enable them to exercise and participate in social activities with the help of wheelchairs. Wheelchairs are also widely used in medical care.

[0003] At the beginning of the design of existing medical care wheelchairs, the traditional bolt tightening method is generally used to fix the adjustment parts. During the later adjustment, tools need to be used to loosen and tighten the bolts, which is extremely inconvenient to adjust. In addition, the bolt tightening parts are prone to loosening, affecting the stability of the wheelchair. Summary of the Invention

[0004] The present disclosure relates to a seat and backrest mounting structure for a medical care wheelchair, which solves the problem that existing medical care wheelchairs generally adopt a traditional bolt tightening method to fix the adjustment parts at the beginning of design, and tools need to be used to loosen and tighten the bolts during subsequent adjustments, which makes the adjustment extremely inconvenient, and the bolt tightening parts are prone to loosening, affecting the stability of the wheelchair.

[0005] In a first aspect of the present disclosure, a seat and backrest mounting structure for a medical care wheelchair is provided, which specifically includes: a chair side frame, a back panel, a connecting rod, a seat panel, a movable sliding sleeve and a positioning column; the chair side frames are provided with two, and the rear end of the bottom of the chair side frame is connected to the back panel, and the back panel is connected to the two chair side frames; the rear end of the top of the chair side frame is connected to the connecting rod, the rear end of the connecting rod is connected to the back panel, and the back panel is connected to the two connecting rods; the bottom of the chair side frame is connected to the seat panel, and the seat panel is located in the middle of the two chair side frames; the outside of the chair side frame is provided with a movable sliding sleeve, the bottom of the movable sliding sleeve is connected to the positioning column, and the positioning column is connected to the chair side frame and the connecting rod.

[0006] Furthermore, a plug hole is provided on the top of the chair side frame, the plug hole faces rearward, and the front end of the connecting rod is slidably connected to the plug hole provided on the chair side frame.

[0007] Furthermore, the bottom of the chair backboard is rotatably connected to the rear end of the bottom of the chair side frame, and movable holes are provided at the left and right ends of the front side of the chair backboard. A connecting block is provided at the rear end of the connecting rod, and the connecting block is slidably connected to the movable hole provided in the chair backboard. The connecting rod slides with the chair side frame, and the connecting block slides in the movable hole. The connecting rod can be adjusted to move forward and backward according to the actual needs of the patient. The connecting rod drives the chair backboard to rotate and changes the angle of the chair backboard.

[0008] Furthermore, an external connection hole is provided on the outer side of the top of the chair side frame, the external connection hole faces downward, and is connected to the plug hole. Internal connection holes are equidistantly provided inside the connecting rod, and the bottom of the internal connection hole is connected to the external connection hole provided on the chair side frame.

[0009] Furthermore, the positioning pin is slidably connected to the outer connection hole, and the top end of the positioning pin is inserted into the inner connection hole.

[0010] Furthermore, the movable sliding sleeve is slidably connected to the outside of the chair side frame, and two sliding holes are provided at the bottom of the movable sliding sleeve. The sliding holes are inclined, and two sliding blocks are provided near the bottom outside the positioning column. The sliding blocks are slidably connected to the sliding holes provided in the movable sliding sleeve.

[0011] Furthermore, a spring is mounted on the outside of the chair side frame, the front end of the spring is in contact with the chair side frame, and the rear end of the spring is in contact with the front side of the movable sleeve. When the inner connecting hole and the outer connecting hole are in a connected state, the movable sleeve moves under the influence of the spring thrust, and the movable sleeve drives the positioning column to move upward, so that the top end of the positioning column is inserted into the inner connecting hole, and the positioning column has a fixing effect on the connecting rod.

[0012] The utility model provides a seat and backrest mounting structure for a medical care wheelchair, which has the following beneficial effects:

[0013] When the utility model is in use, the connecting rod slides with the chair side frame, and the connecting block slides in the movable hole. The connecting rod can be adjusted to move forward and backward according to the actual needs of the patient. The connecting rod drives the chair back plate to rotate and change the angle of the chair back plate to better meet the actual needs of the patient.

[0014] In addition, when the backrest is adjusted to a suitable angle, the inner connecting hole and the outer connecting hole are in a connected state, and the movable sleeve moves under the influence of the spring thrust, and the movable sleeve drives the positioning column to move upward, so that the top end of the positioning column is inserted into the inner connecting hole, and the positioning column is used to fix the connecting rod to ensure the stability of the adjusted state of the backrest; when the backrest needs to be adjusted again, the movable sleeve is moved forward, the spring accumulates force and contracts, and the movable sleeve drives the positioning column to move downward, so that the top end of the positioning column is separated from the inner connecting hole, and the movement of the connecting rod is unrestricted. The connecting rod can be moved forward and backward to adjust the backrest, which is easy to operate.

[0015] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below.

[0017] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0018] In the attached figure:

[0019] Figure 1 Shows a schematic diagram of the overall left rear axle side structure of the present application;

[0020] Figure 2 Shows a schematic diagram of the axial side structure of the chair side frame of the present application;

[0021] Figure 3 A schematic diagram of the connection structure between the chair back plate and the connecting rod of the present application is shown;

[0022] Figure 4 A schematic diagram of the connection structure of the chair side frame, movable sliding sleeve, positioning column and spring of the present application is shown;

[0023] Figure 5 A schematic diagram of the disassembled structure of the chair side frame, movable sliding sleeve and positioning column of the present application is shown.

[0024] Reference Signs List

[0025] 1. Chair side frame; 101. Connecting hole; 102. External connection hole; 2. Chair back plate; 201. Movable hole; 3. Connecting rod; 301. Connecting block; 302. Internal connection hole; 4. Chair seat plate; 5. Movable sliding sleeve; 501. Sliding hole; 6. Positioning column; 601. Slider; 7. Spring. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Example 1: Please refer to Figures 1 to 5 :

[0028] The utility model proposes a seat and backrest mounting structure of a medical care wheelchair, comprising: a chair side frame 1, a back plate 2, a connecting rod 3, a seat plate 4, a movable sliding sleeve 5 and a positioning plug column 6; two chair side frames 1 are provided, the rear end of the bottom of the chair side frame 1 is connected to the back plate 2, and the back plate 2 is connected to the two chair side frames 1; the rear end of the top of the chair side frame 1 is connected to the connecting rod 3, the rear end of the connecting rod 3 is connected to the back plate 2, and the back plate 2 is connected to the two connecting rods 3; the bottom of the chair side frame 1 is connected to the seat plate 4, and the seat plate 4 is located in the middle of the two chair side frames 1; the outer surface of the chair side frame 1 is covered with a movable sliding sleeve 5, the bottom of the movable sliding sleeve 5 is connected to the positioning plug column 6, and the positioning plug column 6 is connected to the chair side frame 1 and the connecting rod 3; the chair side frame 1 is provided with a plug hole 101 at the top, and the plug hole 101 faces rearward. The front end of the connecting rod 3 is slidably connected to the plug hole 101 provided on the chair side frame 1; the bottom of the seat back panel 2 is rotatably connected to the rear end of the bottom of the seat side frame 1, and movable holes 201 are provided at the left and right ends of the front side of the seat back panel 2. A connecting block 301 is provided at the rear end of the connecting rod 3, and the connecting block 301 is slidably connected to the movable hole 201 provided on the seat back panel 2; through the sliding cooperation between the connecting rod 3 and the chair side frame 1, the connecting block 301 slides in the movable hole 201, and the connecting rod 3 can be adjusted to move forward and backward according to the actual use needs of the patient. The connecting rod 3 drives the seat back panel 2 to rotate, changes the angle of the seat back panel 2, and better meets the actual use needs of the patient.

[0029] In the disclosed embodiment, an external connection hole 102 is provided on the outer side of the top of the chair side frame 1. The external connection hole 102 faces downward and is connected to the plug hole 101. Internal connection holes 302 are equidistantly provided inside the connecting rod 3. The bottom of the internal connection hole 302 is connected to the external connection hole 102 provided on the chair side frame 1. The positioning column 6 is slidably connected to the external connection hole 102, and the top of the positioning column 6 is inserted into the internal connection hole 302.

[0030] In the disclosed embodiment, the movable sleeve 5 is slidably connected to the outside of the chair side frame 1. Two sliding holes 501 are provided at the bottom of the movable sleeve 5. The sliding holes 501 are inclined. Two sliders 601 are provided near the bottom of the outer side of the positioning column 6. The sliders 601 are slidably connected to the sliding holes 501 provided in the movable sleeve 5. A spring 7 is sleeved on the outside of the chair side frame 1. The front end of the spring 7 contacts the chair side frame 1, and the rear end of the spring 7 contacts the front side of the movable sleeve 5.

[0031] By adopting the above technical solution, when the backrest 2 is adjusted to a suitable angle, the inner connecting hole 302 and the outer connecting hole 102 are in a connected state, and the movable sleeve 5 moves under the influence of the thrust of the spring 7, and the movable sleeve 5 drives the positioning column 6 to move upward, so that the top end of the positioning column 6 is inserted into the inner connecting hole 302, and the positioning column 6 is used to fix the connecting rod 3 to ensure the stability of the state of the backrest 2 after adjustment; when the backrest 2 needs to be adjusted again, the movable sleeve 5 is moved forward, the spring 7 accumulates force and contracts, and the movable sleeve 5 drives the positioning column 6 to move downward, so that the top end of the positioning column 6 is separated from the inner connecting hole 302, and the movement of the connecting rod 3 is not restricted, and the connecting rod 3 can be moved forward and backward to adjust the backrest 2, which is easy to operate.

[0032] When the backrest 2 is adjusted to the appropriate angle, the inner hole 302 and the outer hole 102 are in a connected state, and the movable sleeve 5 is moved under the influence of the thrust of the spring 7, and the movable sleeve 5 drives the positioning column 6 to move upward, so that the top end of the positioning column 6 is plugged into the inner hole 302, and the connecting rod 3 is fixed by the positioning column 6. The stability of the adjusted state of the backrest 2 can be guaranteed, which better meets the actual use needs of the patient.

[0033] In this article, there are several points to note:

[0034] 1. The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure. Other structures may refer to conventional designs.

[0035] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.

[0036] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A seat and back mounting structure for a medical care wheelchair, comprising: A chair side frame (1), a chair back plate (2), a connecting rod (3), a seat plate (4), a movable sliding sleeve (5) and a positioning plug column (6); characterized in that, the chair side frame (1) is provided with two, the rear end of the bottom of the chair side frame (1) is connected to the chair back plate (2), and the chair back plate (2) is connected to the two chair side frames (1); the rear end of the top of the chair side frame (1) is connected to the connecting rod (3), the rear end of the connecting rod (3) is connected to the chair back plate (2), and the chair back plate (2) is connected to the two connecting rods (3); the bottom of the chair side frame (1) is connected to the seat plate (4), and the seat plate (4) is located in the middle of the two chair side frames (1); the outer surface of the chair side frame (1) is provided with a movable sliding sleeve (5), the bottom of the movable sliding sleeve (5) is connected to the positioning plug column (6), and the positioning plug column (6) is connected to the chair side frame (1) and the connecting rod (3).

2. The seat and backrest mounting structure of a medical care wheelchair according to claim 1, characterized in that: The top of the chair side frame (1) is provided with a plug hole (101), the plug hole (101) faces rearward, and the front end of the connecting rod (3) is slidably connected to the plug hole (101) provided on the chair side frame (1).

3. The seat and backrest mounting structure of a medical care wheelchair according to claim 1, characterized in that: The bottom of the chair back plate (2) is rotatably connected to the rear end of the bottom of the chair side frame (1); movable holes (201) are provided at the left and right ends of the front side of the chair back plate (2); a connecting block (301) is provided at the rear end of the connecting rod (3); and the connecting block (301) is slidably connected to the movable hole (201) provided on the chair back plate (2).

4. The seat and backrest mounting structure of a medical care wheelchair according to claim 2, characterized in that: The outer side of the top of the chair side frame (1) is provided with an external connection hole (102), the external connection hole (102) faces downward, and the external connection hole (102) is connected to the plug hole (101); the inner connection holes (302) are equidistantly provided inside the connecting rod (3), and the bottom of the inner connection hole (302) is connected to the external connection hole (102) provided on the chair side frame (1).

5. The seat and backrest mounting structure of a medical care wheelchair according to claim 4, characterized in that: The positioning plug post (6) is slidably connected to the outer connection hole (102), and the top end of the positioning plug post (6) is inserted into the inner connection hole (302).

6. The seat and backrest mounting structure of a medical care wheelchair according to claim 1, characterized in that: The movable sliding sleeve (5) is slidably connected to the outside of the chair side frame (1); two sliding holes (501) are provided at the bottom of the movable sliding sleeve (5); the sliding holes (501) are inclined; two sliding blocks (601) are provided near the bottom outside the positioning plug column (6); the sliding blocks (601) are slidably connected to the sliding holes (501) provided in the movable sliding sleeve (5).

7. The seat and back mounting structure of a medical care wheelchair according to claim 1, characterized in that: The chair side frame (1) is externally sleeved with a spring (7), the front end of the spring (7) is in contact with the chair side frame (1), and the rear end of the spring (7) is in contact with the front side of the movable sliding sleeve (5).

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