Return plate spring structure for bouncing off table plate

Abstract

The utility model relates to a return plate spring structure for bouncing off a table plate. The return plate spring structure comprises a plate spring fixing support and a return plate spring. The plate spring fixing support is fixed to a metal plate welding assembly of a backrest framework, the return plate spring comprises a mounting part, an elastic driving part and a pressing edge, the mounting part is fixed to the plate spring fixing support, the elastic driving part is arranged on the outer side of the mounting part and is of an S-shaped structure, and the protruding part faces the metal plate welding assembly; an avoiding notch is formed in the position, opposite to the return plate spring, of the fixing support, the return plate spring penetrates through the avoiding notch to enable the pressing edge to make contact with a connecting rod of the table plate connecting rod mechanism, when the table plate is in a closed state, the connecting rod of the table plate connecting rod mechanism is pressed on the pressing edge, and the return plate spring is in a pre-tightening state. The structure not only can effectively avoid a fixing support of a table plate connecting rod mechanism so as to increase the stroke of the return plate spring, but also can enable the table plate to be opened softly, and solves the problems that an existing table plate is large in unlocking force or small in opening angle.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle seats, and particularly relates to a return leaf spring structure for the pop-up of a table board. Background Art

[0002] The return leaf spring of the conventional small table board is limited by the space of the table board fixing bracket. After the table board is unlocked, due to the small space for the return leaf spring to pop up and the limited stroke, the opening angle of the table board is small, which is not conducive to user use. Simply increasing the leaf spring force will result in a large unlocking force for the table board. After unlocking, the table board will pop out instantaneously. Summary of the Invention

[0003] In view of the above technical problems and disadvantages, the purpose of the utility model is to provide a return leaf spring structure for the pop-up of a table board. The return leaf spring adopts an S shape, which can effectively avoid the table board fixing bracket, thereby increasing the stroke of the return leaf spring, solving the problems of large unlocking force of the table board and small opening angle of the table board, and enabling the table board to open gently.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A return leaf spring structure for the pop-up of a table board, comprising two symmetrically arranged leaf spring fixing brackets and a return leaf spring fixed on the leaf spring fixing brackets; wherein, the two leaf spring fixing brackets are fixed on the sheet metal welding assembly of the backrest frame and are arranged in the middle of the fixing bracket close to the table board link mechanism; the return leaf spring includes an installation part, an elastic driving part, and a pressing edge. The installation part is fixed on the leaf spring fixing bracket. The elastic driving part is arranged outside the installation part. The elastic driving part is an S-shaped structure, and the protruding part faces the sheet metal welding assembly. The fixing bracket is provided with an avoidance notch at a position opposite to the return leaf spring. The return leaf spring passes through the avoidance notch so that the pressing edge contacts the link of the table board link mechanism. When the table board is in the closed state, the link of the table board link mechanism presses on the pressing edge, and the return leaf spring is in a pre-tightened state.

[0006] As a preference of the utility model, 4 bolts are welded on the back of the sheet metal welding assembly. The 4 bolts are arranged in a rectangular distribution. The two leaf spring fixing brackets are provided with assembly holes at positions opposite to the bolts. The leaf spring fixing brackets are installed on the bolts and are locked and fixed by nuts.

[0007] As a preference of the utility model, the fixing bracket is fixed on the back of the sheet metal welding assembly by bolts.

[0008] As a preference of the utility model, the leaf spring fixing bracket is provided with a sink for accommodating the nut along the circumference of the assembly hole on one side of the installation nut. The nut is arranged in the sink after being tightened.

[0009] Preferably, the return leaf spring of the present utility model is an integral structure. The return leaf spring is a metal part, and the leaf spring fixing bracket is a plastic part.

[0010] Preferably, injection molding connection holes are provided on the installation part of the return leaf spring, and the return leaf spring and the leaf spring fixing bracket are connected as a whole by insert injection molding.

[0011] Advantages and beneficial effects of the present utility model: The return leaf spring structure provided by the present utility model is simple in structure, reliable in operation, low in cost, convenient for after-sales maintenance. The return leaf spring in the structure adopts an S shape. This structure can not only effectively avoid the fixing bracket of the table board linkage mechanism, thereby increasing the stroke of the return leaf spring, but also enable the table board to be gently opened, solving the problems that the existing table board either has a large unlocking force or a small opening angle of the table board. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0013] Figure 1 Schematic diagram of the installation of the return leaf spring structure of the present utility model on the sheet metal welding assembly;

[0014] Figure 2 Schematic diagram of the sheet metal welding assembly of the present utility model;

[0015] Figure 3 Schematic diagram of the installation position of the return leaf spring structure of the present utility model and the table board linkage mechanism;

[0016] Figure 4 Exploded view of the return leaf spring structure of the present utility model (table board closed state);

[0017] Figure 5 Exploded view of the return leaf spring structure of the present utility model (table board open state);

[0018] Figure 6 Schematic diagram of the change process of two return leaf spring structures of the present utility model;

[0019] Reference numerals: Leaf spring fixing bracket 1, Return leaf spring 2, Sheet metal welding assembly 3, Fixing bracket 4, Link 5, Bolt 6, Nut 7, Assembly hole 11, Sunk groove 12, Installation part 21, Elastic driving part 22, Crimping edge 23, Avoidance notch 41, Injection molding connection hole 211. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0021] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "back surface" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0022] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set" and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0023] As Figures 1 to 6 shown, this embodiment provides a return leaf spring structure for the table board to pop open, including two symmetrically arranged leaf spring fixing brackets 1 and a return leaf spring 2 fixed on the leaf spring fixing brackets. Among them, the two leaf spring fixing brackets 1 are fixed on the sheet metal welding assembly 3 of the backrest frame and are arranged in the middle of the fixing bracket 4 close to the table board link mechanism. The return leaf spring 2 includes an installation part 21, an elastic driving part 22, and a pressing edge 23. The installation part 21 is fixed on the leaf spring fixing bracket 1. The elastic driving part 22 is arranged outside the installation part 21. The elastic driving part is an S-shaped structure, and the protruding part faces the sheet metal welding assembly 3 and is far from the fixing bracket 4. The fixing bracket 4 is provided with an avoidance notch 41 at a position opposite to the return leaf spring 2. The return leaf spring 2 passes through the avoidance notch 41 so that the pressing edge 23 contacts the link 5 of the table board link mechanism. When the table board is in the closed state, the link 5 of the table board link mechanism presses on the pressing edge 23, and the return leaf spring 2 is in a pre-tightened state.

[0024] Further, as Figure 1 、 Figure 2 、 Figure 4As shown, in this embodiment, 4 bolts 6 are welded to the back of the sheet metal welding assembly 3. The 4 bolts 6 are arranged in a rectangle. Assembly holes 11 are provided at positions of the two leaf spring fixing brackets 1 opposite to the bolts. The leaf spring fixing brackets 1 are mounted on the bolts 6 and locked and fixed by nuts 7.

[0025] Furthermore, in this embodiment, the fixing bracket 4 is fixed to the back of the sheet metal welding assembly 3 by bolts.

[0026] Furthermore, continue as Figure 1 、 Figure 4 As shown, in this embodiment, a counterbore 12 for accommodating the nut 7 is provided along the circumference of the assembly hole 11 on one side of the leaf spring fixing bracket 1 where the nut 7 is installed. After the nut 7 is tightened, it is arranged in the counterbore 12.

[0027] In this embodiment, the return leaf spring 2 is of an integral structure. The return leaf spring 2 is a metal part, and the leaf spring fixing bracket 1 is a plastic part. Two injection molding connection holes 211 are provided on the mounting portion 21 of the return leaf spring 2. The return leaf spring 2 and the leaf spring fixing bracket 1 are connected as a whole by insert injection molding. When the tabletop is closed, the two return leaf springs 2 are in the designed state. When the tabletop is unlocked, the tabletop link mechanism uses the force of the two return leaf springs 02 to bounce the tabletop open. At this time, the two return leaf springs 2 change from the designed state to the open state. This structure can not only effectively avoid the fixing bracket 4 of the tabletop link mechanism, thereby increasing the stroke of the return leaf spring, but also make the tabletop open gently, solving the problems that the existing tabletop either has a large unlocking force or a small opening angle of the tabletop.

[0028] The above are the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A return leaf spring structure for the pop-up of a tabletop, comprising two symmetrically arranged leaf spring fixing brackets and a return leaf spring fixed on the leaf spring fixing brackets; the two leaf spring fixing brackets are fixed on the sheet metal welding assembly of the backrest frame and are arranged in the middle of the fixing bracket close to the tabletop link mechanism; characterized in that, The return leaf spring includes a mounting portion, an elastic driving portion, and a hemming portion. The mounting portion is fixed on the leaf spring fixing bracket. The elastic driving portion is arranged outside the mounting portion. The elastic driving portion is in an S-shaped structure, and the protruding part faces the sheet metal welding assembly. The fixing bracket is provided with an avoidance notch at a position opposite to the return leaf spring. The return leaf spring passes through the avoidance notch so that the hemming portion contacts the connecting rod of the table board linkage mechanism. In the closed state of the table board, the connecting rod of the table board linkage mechanism presses on the hemming portion, and the return leaf spring is in a pre-tightened state.

2. The return leaf spring structure for tabletop popping open according to claim 1, wherein, Four bolts are welded on the back of the sheet metal welding assembly. The four bolts are arranged in a rectangular distribution. Two leaf spring fixing brackets are provided with assembly holes at positions opposite to the bolts. The leaf spring fixing brackets are installed on the bolts and locked and fixed by nuts.

3. The return leaf spring structure for tabletop bouncing according to claim 1, characterized in that, The fixing bracket is fixed on the back of the sheet metal welding assembly by bolts.

4. A return leaf spring structure for tabletop popping, according to claim 2, characterized in that The leaf spring fixing bracket is provided with a counterbore for accommodating the nut along the circumference of the assembly hole on one side of the mounting nut. The nut is arranged in the counterbore after being tightened.

5. The return leaf spring structure for the tabletop to pop up according to claim 2, characterized in that, The return leaf spring is of an integral structure. The return leaf spring is a metal part, and the leaf spring fixing bracket is a plastic part.

6. The return leaf spring structure for table board pop-up according to claim 5, characterized in that The mounting portion of the return leaf spring is provided with an injection molding connection hole. The return leaf spring and the leaf spring fixing bracket are connected as a whole by insert injection molding.

Images