Wheelchair seat frame assembly jig

Abstract

The utility model discloses a wheelchair seat frame assembly fixture, including first limit support mechanism, second limit support mechanism, first limit support mechanism, second limit support mechanism respectively are driven by horizontal displacement drive mechanism and can be relatively close or relatively far away, first limit support mechanism is used for placing the seat body of wheelchair, second limit support mechanism is used for placing the frame body of wheelchair, the seat body is limited fixed after first limit support mechanism, and its seat cushion bottom surface is perpendicular to horizontal plane, the frame body is limited fixed after second limit support mechanism, and its support seat top surface is perpendicular to horizontal plane, first limit mechanism and second limit mechanism make seat cushion bottom surface and support seat top surface can be attached after each other close and bolted joint hole correspondence of two intercommunication, can realize quick, accurate fixing and alignment to wheelchair seat body and frame body, and the assembly quality and efficiency have been improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of fixture design technology, specifically a wheelchair seat frame assembly fixture. Background Technology

[0002] In the manufacturing process of wheelchairs, the assembly of the wheelchair seat body and the frame body is a crucial step. Previously, our company relied heavily on manual labor for assembly. Workers had to manually align and secure the seat body to the frame body. However, the seat body and frame body are large and heavy, making this method not only inefficient and increasing worker fatigue, but also difficult to guarantee assembly precision and quality due to the instability and individual differences inherent in manual operation. Therefore, there is an urgent need for a fixture that can efficiently, accurately, and flexibly assemble wheelchair seats and frames to solve these problems. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model relates to a wheelchair seat frame assembly fixture. This fixture is simple and reliable, effectively solves the aforementioned technical problems, and is suitable for widespread use. To achieve the above objectives, this utility model employs the following technical solution:

[0004] A wheelchair seat frame assembly fixture includes a first limiting support mechanism and a second limiting support mechanism. The first limiting support mechanism and the second limiting support mechanism are driven by a horizontal displacement driving mechanism to move relatively closer or relatively farther apart. The first limiting support mechanism is used to place the seat body of the wheelchair, and the second limiting support mechanism is used to place the frame body of the wheelchair. After the seat body is limited and fixed by the first limiting support mechanism, the bottom surface of the seat cushion is perpendicular to the horizontal plane. After the frame body is limited and fixed by the second limiting support mechanism, the top surface of the support seat is perpendicular to the horizontal plane. When the first limiting mechanism and the second limiting mechanism move closer to each other, the bottom surface of the seat cushion and the top surface of the support seat can fit together, and their bolt connection holes are correspondingly connected.

[0005] Based on the above scheme and as a preferred embodiment of the above scheme: the first limiting support mechanism includes a first base plate, columns, a support plate, and a baffle. The first base plate is horizontally arranged, and two columns are symmetrically fixed on the first base plate. The support plate is arranged vertically opposite to the first base plate and its bottom is fixedly connected to the columns. The support plate is provided with a fixed baffle. The baffle and the support plate cooperate to form a right-angle limiting part. The support plate is used to support the seat cushion part of the seat body.

[0006] Based on the above scheme and as a preferred embodiment: the first limiting support mechanism further includes a vertical plate, a limiting rod, an adjusting plate, a mounting plate, a receiving plate, a pressure plate, a locking block, and a cylinder. The vertical plate is fixed to the first base plate and is arranged opposite to the column. The vertical plate and the column are connected by the limiting rod. The adjusting plate is attached to the rear side of the vertical plate and connected to the vertical plate by bolts. The vertical plate is provided with a waist-shaped adjusting hole that passes through the vertical plate from front to back. The mounting plate is fixedly connected to the adjusting plate. The cylinder body of the cylinder is fixed to the mounting plate. The piston rod of the cylinder faces forward and is fixedly connected to the pressure plate. The upper and lower sides of the pressure plate are provided with two symmetrical locking blocks. The cross-section of the locking blocks is L-shaped. The pressure plate and the locking blocks cooperate to limit the top of the backrest of the seat body. The front side of the vertical plate is also provided with a receiving plate, which is used to support the backrest of the seat body.

[0007] Based on the above scheme and as a preferred embodiment: the second limiting support mechanism includes a second base plate, a support plate, a side plate, a support rod, a support column, and a top block. Two support plates are symmetrically arranged on the second base plate. The side plate is fixed to one side of the support plate. Two support rods are arranged parallel to each other front and back. The left and right ends of the support rods are respectively connected to the two side plates. A gap is left between the two support rods to form a limiting opening for placing the rear wheel of the frame body. The bottom of the support column is fixedly connected to the second base plate. The top block is fixed above the support column by bolt connection. The upper part of the top block forms an isosceles trapezoidal structure. The top block is used to snap between the two side arms of the frame body to support its chassis.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme: the second limiting support mechanism further includes guide rails and sliders. The two guide rails are symmetrically arranged on the second base plate. The guide rails are arranged in a left-right direction. The sliders slide with the guide rails and are fixedly connected to the support plate.

[0009] The outstanding and beneficial technical effects of this utility model compared with the prior art are as follows: By setting a first limiting support mechanism and a second limiting support mechanism controlled by a horizontal displacement driving mechanism, this fixture can achieve rapid and accurate fixation and alignment of the wheelchair seat body and the frame body, effectively solving the problems of low efficiency and unstable precision in traditional assembly methods, while improving the flexibility and adaptability of assembly, and significantly improving assembly quality and efficiency. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the assembly and use of the jig;

[0011] Figure 2 This is a schematic diagram of the first limit support mechanism;

[0012] Figure 3This is a schematic diagram of the second limit support mechanism. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. However, the specific implementation methods and embodiments described below are for illustrative purposes only and are not intended to limit the present invention.

[0014] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The directions or positional relationships shown are for the purpose of describing this utility model only, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0015] In the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0016] To solve the above technical problems, such as Figure 1-3As shown, this utility model designs a wheelchair seat frame assembly fixture, including a first limiting support mechanism 1 and a second limiting support mechanism 2. The first limiting support mechanism 1 and the second limiting support mechanism 2 are respectively driven by a horizontal displacement driving mechanism (not shown in the figure) to move relatively closer or relatively farther apart. The horizontal displacement driving mechanism can be a conventional lead screw drive or a cylinder 112 drive, without specific limitations, and will not be further elaborated in this article. The first limiting support mechanism 1 is used to place the seat body 3 of the wheelchair, and the second limiting support mechanism 2 is used to place the frame body 4 of the wheelchair. After the seat body 3 is limited and fixed by the first limiting support mechanism 1, the bottom surface of its seat cushion is perpendicular to the horizontal plane. After the frame body 4 is limited and fixed by the second limiting support mechanism 2, the top surface of its support seat is perpendicular to the horizontal plane. The utility model uses a horizontal displacement drive mechanism to control the first limiting support mechanism 1 and the second limiting support mechanism 2 to move closer or further apart, achieving rapid and precise fixing and alignment of the wheelchair seat and the main frame 4. This effectively improves assembly efficiency and precision. During operation, the seat body 3 is first placed on the first limiting support mechanism 1, so that the bottom surface of its seat cushion is perpendicular to the horizontal plane and is limited and fixed. Then, the frame body 4 is placed on the second limiting support mechanism 2, so that the top surface of its support seat is perpendicular to the horizontal plane and is limited and fixed. Then, the horizontal displacement drive mechanism drives the first limiting support mechanism 1 and the second limiting support mechanism 2 to move closer to each other until the bottom surface of the seat cushion of the seat body 3 is in contact with the top surface of the support seat of the frame body 4, and the bolt connection holes of the two are connected. The operator can then install the screws to complete the assembly.

[0017] In this embodiment, it is further preferred that the first limiting support mechanism 1 includes a first base plate 11, columns 12, a support plate 13, and a baffle 14. The first base plate 11 is horizontally arranged, and two columns 12 are symmetrically fixed on the first base plate 11. The support plate 13 is vertically opposite to the first base plate 11 and its bottom is fixedly connected to the columns 12. The support plate 13 is provided with a fixed baffle 14. The baffle 14 and the support plate 13 cooperate to form a right-angle limiting part. The support plate 13 is used to support the seat cushion of the seat body 3. The two symmetrically arranged columns 12 not only enhance the overall stability of the mechanism, but also form a sturdy frame structure through the fixed connection with the support plate 13, which can effectively distribute and bear the weight of the seat body 3. The design of the support plate 13 matches the position of the seat cushion of the seat body 3, so that it can be placed stably and obtain good support. The right-angle limiting part can limit the seat body 3 from two vertical directions.

[0018] In this embodiment, it is further preferred that the first limiting support mechanism 1 also includes a vertical plate 15, a limiting rod 16, an adjusting plate 17, a mounting plate 18, a receiving plate 19, a pressure plate 110, a locking block 111, and a cylinder 112. The vertical plate 15 is fixed on the first base plate 11 and is arranged opposite to the column 12. The vertical plate 15 and the column 12 are connected by the limiting rod 16 to improve the structural strength. The adjusting plate 17 is attached to the rear side of the vertical plate 15 and is connected to the vertical plate 15 by bolts. The vertical plate 15 is provided with a waist-shaped adjusting hole that runs through the vertical plate 15 from front to back, allowing the position to be adjusted within a certain range to adapt to different sizes of seat bodies 3, thereby improving the versatility and flexibility of the device.

[0019] The mounting plate 18 is fixedly connected to the adjusting plate 17. The cylinder body of the cylinder 112 is fixed on the mounting plate 18. The piston rod of the cylinder 112 faces forward and is fixedly connected to the pressure plate 110. The upper and lower sides of the pressure plate 110 are provided with two symmetrical locking blocks 111. The cross-section of the locking blocks 111 is L-shaped. When the piston rod of the cylinder 112 extends, it drives the pressure plate 110 to move forward. The pressure plate 110 contacts the top of the seat back and gradually applies pressure to make it stably fit. At the same time, the L-shaped locking blocks 111 on the upper and lower sides of the pressure plate 110 limit the top of the backrest from both directions, forming a stable and reliable fixing effect. This design not only improves the assembly efficiency, but also ensures the stability of the seat body 3 during the assembly process, effectively preventing assembly errors caused by backrest shaking or displacement.

[0020] In addition, a support plate 19 is provided on the front side of the upright plate 15. The support plate 19 is used to support the backrest of the seat body 3, which further enhances the fixing effect of the seat body 3.

[0021] In this embodiment, it is further preferred that the second limiting support mechanism 2 includes a second base plate 21, a support plate 22, a side plate 23, a support rod 24, a support column 25, and a top block 26. Two support plates 22 are symmetrically arranged on the second base plate 21. The side plate 23 is fixed to one side of the support plate 22. Two support rods 24 are arranged parallel to each other front to back. The left and right ends of the support rods 24 are respectively connected to the two side plates 23. A gap is left between the two support rods 24, forming a limiting opening for placing the rear wheel of the frame body 4. The two parallel support rods 24, connected to the side plate 23, form a stable support structure. The limiting opening effectively places the rear wheel of the frame body 4, preventing the frame body 4 from moving or shaking during assembly, thus improving the positioning accuracy and stability of the frame body 4.

[0022] The bottom of the support column 25 is fixedly connected to the second base plate 21, and the top block 26 is fixed above the support column 25 by bolts, providing a stable support foundation for the top block 26. The bolt connection makes it convenient to connect and disassemble simultaneously. The upper part of the top block 26 forms an isosceles trapezoidal structure. This design allows it to better fit between the two arms of the frame body 4. The isosceles trapezoidal structure has good symmetry and stability, and can distribute the support force more evenly, thereby providing more precise and stable support for the chassis of the frame body 4. Overall, the second limiting support mechanism 2 has a reasonable structural design, and the components work together to effectively ensure the stability and positioning accuracy of the frame body 4 during assembly, providing a reliable guarantee for subsequent assembly processes and improving the quality and efficiency of wheelchair assembly.

[0023] In this embodiment, it is further preferred that the second limiting support mechanism 2 also includes a guide rail 27 and a slider 28. The two guide rails 27 are symmetrically arranged on the second base plate 21. The guide rails 27 are arranged in the left and right direction. The slider 28 slides with the guide rails 27. The slider 28 is fixedly connected to the support plate 22. After the support rod 24 is removed, the support plate 22 can be moved and adjusted in the left and right direction, thereby adjusting the distance between the two to adapt to the frame casters. The setting of the guide rail 27 ensures the accuracy of movement and avoids skewing after adjustment.

[0024] It is worth noting that the technical features such as cylinders and bolt connections involved in this utility model patent application should be regarded as prior art. The specific structure, working principle, and possible control methods and spatial arrangement of these technical features can be adopted using conventional choices in the field, and should not be regarded as the inventive point of this utility model patent. This utility model patent will not elaborate further.

[0025] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made by those skilled in the art based on the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A wheelchair seat frame assembly fixture, characterized in that: The system includes a first limiting support mechanism and a second limiting support mechanism. The first and second limiting support mechanisms are driven by a horizontal displacement driving mechanism to move relatively closer or further apart. The first limiting support mechanism is used to place the seat body of the wheelchair, and the second limiting support mechanism is used to place the frame body of the wheelchair. After the seat body is limited and fixed by the first limiting support mechanism, the bottom surface of its seat cushion is perpendicular to the horizontal plane. After the frame body is limited and fixed by the second limiting support mechanism, the top surface of its support seat is perpendicular to the horizontal plane. When the first and second limiting support mechanisms move closer to each other, the bottom surface of the seat cushion and the top surface of the support seat can fit together, and their bolt connection holes are connected accordingly.

2. The wheelchair seat frame assembly fixture according to claim 1, characterized in that: The first limiting support mechanism includes a first base plate, columns, a support plate, and a baffle. The first base plate is horizontally arranged, and two columns are symmetrically fixed on the first base plate. The support plate is arranged vertically opposite to the first base plate and its bottom is fixedly connected to the columns. The support plate is provided with a fixed baffle. The baffle and the support plate cooperate to form a right-angle limiting part. The support plate is used to support the seat cushion part of the seat body.

3. The wheelchair seat frame assembly fixture according to claim 2, characterized in that: The first limiting support mechanism further includes a vertical plate, a limiting rod, an adjusting plate, a mounting plate, a receiving plate, a pressure plate, a locking block, and a cylinder. The vertical plate is fixed to the first base plate and is arranged opposite to the column. The vertical plate and the column are connected by the limiting rod. The adjusting plate is attached to the rear side of the vertical plate and connected to the vertical plate by bolts. The vertical plate is provided with a waist-shaped adjusting hole that passes through the vertical plate from front to back. The mounting plate is fixedly connected to the adjusting plate. The cylinder body is fixed to the mounting plate. The piston rod of the cylinder faces forward and is fixedly connected to the pressure plate. The upper and lower sides of the pressure plate are provided with two symmetrical locking blocks. The cross-section of the locking blocks is L-shaped. The pressure plate and the locking blocks cooperate to limit the top of the backrest of the seat body. The front side of the vertical plate is also provided with a receiving plate, which is used to support the backrest of the seat body.

4. The wheelchair seat frame assembly fixture according to claim 1, characterized in that: The second limiting support mechanism includes a second base plate, a support plate, a side plate, a support rod, a support column, and a top block. Two support plates are symmetrically arranged on the second base plate. The side plate is fixed to one side of the support plate. Two support rods are arranged parallel to each other front and back. The left and right ends of the support rods are connected to the two side plates respectively. A gap is left between the two support rods to form a limiting opening for placing the rear wheel of the frame body. The bottom of the support column is fixedly connected to the second base plate. The top block is fixed above the support column by bolt connection. The upper part of the top block forms an isosceles trapezoidal structure. The top block is used to snap between the two side arms of the frame body to support its chassis.

5. The wheelchair seat frame assembly fixture according to claim 4, characterized in that: The second limiting support mechanism also includes guide rails and sliders. Two guide rails are symmetrically arranged on the second base plate. The guide rails are arranged in a left-right direction. The slider slides with the guide rails and is fixedly connected to the support plate.

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