A backrest connection mechanism

Abstract

The utility model discloses a backrest connecting mechanism, including backrest support board, backrest sliding slot and backrest subassembly, backrest subassembly installation with backrest support board is by index pin spacing connection, and backrest support board is installed in backrest sliding slot.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically a backrest connection mechanism. Background Technology

[0002] Traditional doctor's chair backrests have a relatively simple structure, which is difficult to meet the needs of different patients or doctors during use. Common doctor's chair backrest connection structures have rotating parts, which require the addition of lubricating oil after a period of use to reduce friction. To solve the above problems, this utility model provides a backrest connection mechanism to provide a solution. Summary of the Invention

[0003] The purpose of this utility model is to address the aforementioned problems in the existing technology by providing a backrest connection mechanism for a doctor's chair.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A backrest connection mechanism includes a backrest support plate, a backrest slide groove, and a backrest assembly. The backrest assembly is installed and connected to the backrest support plate by an indexing pin, and the backrest support plate is installed in the backrest slide groove.

[0005] The backrest assembly includes a backrest, a backrest pad, a spring, a hinge plate, a pin, a positioning plate, an indexing pin, and a protective cover.

[0006] A backrest connection mechanism, wherein the sliding backrest assembly is indexed and limited by a pin, and the backrest assembly is mounted on a backrest support plate. Preferably, the backrest support plate includes at least two upper and lower positioning holes, and the backrest support plate can be adjusted up and down. The backrest support plate is installed in the backrest slide groove. Preferably, the backrest pad is fixed to the backrest with screws, and the spring is fixed to the hinge plate with screws. Preferably, the up and down angle range of the spring is 0°-12°. The pin fixes the hinge plate to the backrest pad, the positioning plate is fixed to the back of the hinge plate with screws, the protective cover is fixed above the hinge plate with screws, the indexing pin is screwed into the threaded hole of the positioning plate, and the backrest support plate can slide in the slide groove to achieve backrest adjustment. A backrest connection mechanism is provided, wherein the backrest slide is fixed to the seat plate under the doctor's chair cushion with screws, and the backrest support plate is fixed to the seat plate under the doctor's chair cushion with a handle, so that the backrest support plate can slide back and forth in the backrest slide. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of a backrest connection mechanism according to the present invention; Figure 2 This is an exploded view of a backrest connection mechanism according to the present invention.

[0008] 1 Backrest support plate, 2 Backrest slide groove, 3 Backrest assembly, 3-1 Backrest, 3-2 Backrest pad, 3-3 Spring, 3-4 Hinge movable plate, 3-5 Pin, 3-6 Positioning plate, 3-7 Indexing pin, 3-8 Protective cover. Detailed Implementation

[0009] The invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this utility model and should not be used to limit the protection scope of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0010] Reference Figure 1-2 As shown in the figure, an embodiment of this case provides a backrest connection mechanism, including a backrest support plate 1, a backrest slide groove 2, and a backrest assembly 3. The backrest assembly 3 is installed and connected to the backrest support plate 1 by an indexing pin. The backrest support plate 1 is installed in the backrest slide groove 2. The backrest assembly includes a backrest 3-1, a backrest pad 3-2, a spring 3-3, a hinge plate 3-4, a pin 3-5, a positioning plate 3-6, an indexing pin 3-7, and a protective cover 3-8. Specifically, the indexing pins 3-7 of the sliding backrest assembly limit connection backrest assembly 3 are installed on the backrest support plate 1. The backrest support plate 1 includes at least two upper and lower positioning holes, and the backrest support plate 1 can be adjusted up and down. Specifically, the backrest support plate 1 is installed in the backrest slide groove 2, the backrest pad 3-2 is fixed to the backrest 3-1 with screws, the spring 3-3 is fixed to the hinge movable plate 3-4 with screws, and the up and down angle range of the spring 3-3 is 0°-12°. Specifically, pin 3-5 fixes hinge movable plate 3-4 to backrest pad plate 3-2, positioning plate 3-6 is fixed to the reverse side of hinge movable plate 3-4 with screws, protective cover 3-8 is fixed above hinge movable plate 3-4 with screws, indexing pin 3-7 is screwed into threaded hole of positioning plate 3-6, and backrest support plate can slide in slide groove to realize backrest front and back adjustment;

[0011] A backrest connection mechanism is provided, wherein the backrest slide is fixed to the seat plate under the doctor's chair cushion with screws, and the backrest support plate is fixed to the seat plate under the doctor's chair cushion with a handle, so that the backrest support plate can slide back and forth in the backrest slide.

[0012] A linkage mechanism is employed to achieve coordinated movement between the backrest and the seat frame. Through a combination of pins and springs, the backrest can compensate for changes in angle, preventing a "back-rubbing" effect. Multiple adjustment methods are provided, such as using an adjustment device on the adjustment frame, which utilizes the cooperation of a sliding block and an adjustment groove to achieve flexible adjustment of the backrest angle. The design of the adjustment device includes the cooperation of components such as the indexing pin, sliding block, and adjustment groove, and how they enable quick and convenient adjustment of the backrest position. Improvements to the adjustment mechanism, such as the use of an elastic mechanism, ensure stable adjustment of the backrest angle.

Claims

1. A backrest connection mechanism, comprising a backrest support plate (1), a backrest slide groove (2), and a backrest assembly (3), wherein, The backrest assembly (3) includes a backrest (3-1), a backrest pad (3-2), a spring (3-3), a hinge plate (3-4), a pin (3-5), a positioning plate (3-6), an indexing pin (3-7), and a protective cover (3-8). Backrest support plate (1) and backrest slide (2) are fixed on the seat plate. Backrest support plate (1) is installed in backrest slide (2). Backrest assembly (3) and backrest support plate (1) are connected by indexing pin. Backrest pad (3-2) is fixed on backrest (3-1). Spring (3-3) is fixed on hinge movable plate (3-4). Pin (3-5) fixes hinge movable plate (3-4) on backrest pad (3-2). Positioning plate (3-6) is fixed on the back of hinge movable plate (3-4). Indexing pin (3-7) is screwed into the hole of positioning plate (3-6). Protective cover (3-8) is fixed above hinge movable plate (3-4). Its characteristic is that the angle range of the spring (3-3) is from 0 degrees to 12 degrees.

2. The backrest connecting mechanism according to claim 1, characterized in that, The backrest support plate (1) includes at least two positioning holes.

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