Double-piece plate spring

Abstract

The utility model relates to the technical field of plate springs, and particularly discloses a double-plate type plate spring which comprises a main plate spring and an auxiliary plate spring, the main plate spring is connected with the auxiliary plate spring through a connecting piece, a supporting piece is arranged between the main plate spring and the auxiliary plate spring, and the supporting piece comprises a connecting plate, a buffering supporting body, a first upper mounting plate and a first lower mounting plate. The upper end of the connecting plate is connected with a buffer supporting body; a middle buffering piece is further arranged between the main plate spring and the auxiliary plate spring. The supporting piece is arranged between the main plate spring and the auxiliary plate spring, so that the main plate spring transmits force to the auxiliary plate spring through the supporting piece, direct contact of the main plate spring and the auxiliary plate spring is avoided, noise is reduced, the arranged supporting piece is installed between the main plate spring and the auxiliary plate spring through the bolt, and the effect of facilitating replacement is achieved. And the middle buffering piece is further arranged between the main plate spring and the auxiliary plate spring, so that the middle part between the main plate spring and the auxiliary plate spring can also achieve the supporting and buffering effects, and the using effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of leaf springs, and in particular relates to a double-leaf leaf spring. Background Art

[0002] Leaf springs are the most traditional elastic elements in automobile suspension systems. They are widely used due to their good reliability, simple structure, short manufacturing process and low cost. For automobile leaf springs, a leaf spring composed of a main spring and a secondary spring can achieve the effect of variable stiffness. The main spring is on top and the secondary spring is on the bottom. The main and secondary springs gradually contact with the increase in load. This structure can achieve the effect of gradually increasing spring stiffness. However, after long-term use, the direct contact between the main spring and the secondary spring is prone to generate noise, affecting ride comfort. Utility Model Content

[0003] The purpose of the present utility model is to provide a double-leaf leaf spring to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A double-leaf leaf spring comprising:

[0006] The locking plate is secured to the bottom of the frame by means of a latch lock and is secured to the hinged portion for locking the top of the frame and locking the top of the frame for locking the top of the frame.

[0007] A middle buffer is also provided between the main leaf spring and the auxiliary leaf spring, so that the middle portion thereof can also play a supporting and buffering role.

[0008] Preferably, the ears are mounted on both ends of the main spring via bolts, and the ears can be easily disassembled and replaced by removing the bolts.

[0009] Preferably, the connecting member includes an upper clamp, a pad and a lower clamp, the upper clamp is provided on the outer middle part of the main leaf spring, the lower clamp is provided on the outer middle part of the auxiliary leaf spring, the pad is located between the upper clamp and the lower clamp, and screw holes are provided inside the upper clamp, the pad and the lower clamp, and fixing bolts are installed inside the screw holes for connecting them to each other.

[0010] Preferably, the upper clamp and the lower clamp both include a pressing plate and a supporting plate, the pressing plate and the supporting plate constitute a box structure with openings at both ends for fixing the leaf spring, and the pressing plate is located above the supporting plate.

[0011] Preferably, the middle buffer member includes a mounting member, a buffer pressure rod, a slider, a buffer spring and a connecting rod, the mounting member is provided on the outer side of the main spring, the lower end of the mounting member is connected to the connecting rod, one end of the connecting rod is hinged to the buffer pressure rod, a mounting groove is provided inside the upper end of the secondary leaf spring, the interior of the mounting groove is slidably connected to the slider, the mounting groove is also provided with the buffer spring, and further the mounting groove is provided with a damping component, which cooperates to play a buffering role, one end of the buffer spring is connected to the slider, and the slider is set in a T-shape, so that it can slide inside the mounting groove and be connected to the buffer pressure rod, and the upper end of the slider is hinged to the buffer pressure rod. When the main spring moves downward relative to the secondary leaf spring, the slider can be pressurized by the buffer pressure rod, and then cooperate with the buffer spring on one side of the slider to play a buffering role.

[0012] Preferably, the mounting member includes an upper mounting plate 2 and a lower mounting plate 2, the upper end of the main board spring is mounted with the upper mounting plate 2, the lower end of the main board spring is mounted with the lower mounting plate 2, the lower end of the lower mounting plate 2 is connected to the connecting rod, the main board spring is located between the upper mounting plate 2 and the lower mounting plate 2, the upper mounting plate 2 and the lower mounting plate 2 are mounted on the outside of the main board spring by bolts, and the upper mounting plate 2 and the lower mounting plate 2 are easily installed or disassembled through the provided bolt connection.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model provides a support member between the main leaf spring and the auxiliary leaf spring, so that the main leaf spring transmits force to the auxiliary leaf spring through the support member, avoiding direct contact between the main leaf spring and the auxiliary leaf spring and reducing noise. The support member is installed between the main leaf spring and the auxiliary leaf spring by bolts, which facilitates replacement. A middle buffer member is also provided between the main leaf spring and the auxiliary leaf spring, so that the middle part between the main leaf spring and the auxiliary leaf spring can also play a supporting and buffering role, further improving the buffering pressure effect, so that the device not only relies on the rigidity of the main leaf spring and the auxiliary leaf spring themselves for buffering, but can also buffer through the provided support member and the middle buffer member, thereby improving the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a partial cross-sectional view of the utility model;

[0017] Figure 3 For the utility model Figure 2 A is an enlarged schematic diagram;

[0018] In the figure: 10, main leaf spring; 11, auxiliary leaf spring; 12, coiled ear;

[0019] 20. Pressing plate; 21. Supporting plate; 22. Connecting plate; 23. Buffer support; 24. Upper mounting plate 1; 25. Lower mounting plate 1;

[0020] 30. Buffer pressure rod; 31. Slider; 32. Buffer spring; 33. Upper mounting plate 2; 34. Lower mounting plate 2; 35. Connecting rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example:

[0023] See also Figure 1-Figure 3 As shown, a double-leaf leaf spring comprises:

[0024] The main spring 10 and the auxiliary leaf spring 11 are connected to the auxiliary leaf spring 11 by a connecting piece. The main spring 10 is located above the auxiliary leaf spring 11. Both ends of the main spring 10 are detachably installed with a coil ear 12. A support member is provided between the main spring 10 and the auxiliary leaf spring 11 to support and buffer the main spring 10. The support member includes a connecting plate 22, a buffer support body 23, an upper mounting plate 24 and a lower mounting plate 25. An upper mounting plate 24 is provided on the upper side of the end of the main spring 10, and a lower mounting plate 25 is provided on the lower side of the end of the main spring 10. The upper mounting plate 24 and the lower mounting plate 25 are provided. The mounting plate 25 is mounted on the end of the main leaf spring 10 by bolts, which facilitates installation or removal and is easy to replace. A connecting plate 22 is mounted on the upper side of the end of the auxiliary leaf spring 11 by bolts. The upper end of the connecting plate 22 is connected to a buffer support 23. The lower end of the lower mounting plate 25 is provided with a matching groove that matches the buffer support 23 for supporting and avoiding direct contact between the main leaf spring 10 and the auxiliary leaf spring 11. While playing a buffering role, it reduces impact and noise. The buffer support 23 can be made of a buffer material in the prior art, such as hard rubber.

[0025] A middle buffer is also provided between the main leaf spring 10 and the auxiliary leaf spring 11 so that the middle portion thereof can also play a supporting and buffering role.

[0026] refer to Figure 1-Figure 3 As shown, both ends of the main spring 10 are mounted with ears 12 by bolts, and the ears 12 can be easily disassembled and replaced by removing the bolts.

[0027] refer to Figure 1-Figure 3 As shown, the connecting part includes an upper clamp, a pad and a lower clamp. The upper clamp is provided on the outer middle part of the main leaf spring 10, and the lower clamp is provided on the outer middle part of the auxiliary leaf spring 11. The pad is located between the upper clamp and the lower clamp. Screw holes are provided inside the upper clamp, the pad and the lower clamp, and fixing bolts are installed inside the screw holes for connecting them to each other.

[0028] refer to Figure 1-Figure 3 As shown, both the upper clamp and the lower clamp include a pressing plate 20 and a supporting plate 21 . The pressing plate 20 and the supporting plate 21 form a box structure with openings at both ends for fixing the leaf spring. The pressing plate 20 is located above the supporting plate 21 .

[0029] refer to Figure 1-Figure 3When the main spring 10 moves downward relative to the auxiliary leaf spring 11, the buffer pressure rod 31 can be pressed by the buffer pressure rod 30, thereby cooperating with the buffer spring 32 on one side of the slider 31 to play a buffering role.

[0030] refer to Figure 1-Figure 3 As shown, the mounting parts include an upper mounting plate 2 33 and a lower mounting plate 2 34. The upper mounting plate 2 33 is mounted on the upper end of the main board spring 10, and the lower mounting plate 2 34 is mounted on the lower end of the main board spring 10. The lower end of the lower mounting plate 2 34 is connected to a connecting rod 35. The main board spring 10 is located between the upper mounting plate 2 33 and the lower mounting plate 2 34. The upper mounting plate 2 33 and the lower mounting plate 2 34 are mounted on the outside of the main board spring 10 by bolts. The upper mounting plate 2 33 and the lower mounting plate 2 34 are easily installed or disassembled through the provided bolt connection.

[0031] The utility model provides a support member between the main leaf spring 10 and the auxiliary leaf spring 11, so that the main leaf spring 10 transmits force to the auxiliary leaf spring 11 through the support member, avoiding direct contact between the main leaf spring 10 and the auxiliary leaf spring 11 to reduce noise, and the support member is installed between the main leaf spring 10 and the auxiliary leaf spring 11 by bolts, which plays a role in easy replacement. By also providing a middle buffer member between the main leaf spring 10 and the auxiliary leaf spring 11, the middle part between the main leaf spring 10 and the auxiliary leaf spring 11 can also play a supporting and buffering role, further improving the buffering pressure effect, so that the device not only relies on the rigidity of the main leaf spring 10 and the auxiliary leaf spring 11 themselves for buffering, but can also buffer through the provided support member and the middle buffer member, thereby improving the use effect.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-leaf leaf spring, characterized in that: include: A main plate spring (10) and a secondary plate spring (11), wherein the main plate spring (10) is connected to the secondary plate spring (11) through a connecting piece, the main plate spring (10) is located above the secondary plate spring (11), and both ends of the main plate spring (10) are detachably mounted with ears (12), a support member is provided between the main plate spring (10) and the secondary plate spring (11), and the support member includes a connecting plate (22), a buffer support body (23), an upper mounting plate (24) and a lower mounting plate (25), and the upper side of the end of the main plate spring (10) is provided with a plurality of connecting plates (22), a buffer support body (23), an upper mounting plate (24) and a lower mounting plate (25). The upper mounting plate (24) is provided, and the lower mounting plate (25) is provided on the lower side of the end of the main plate spring (10). The upper mounting plate (24) and the lower mounting plate (25) are installed on the end of the main plate spring (10) by bolts. The connecting plate (22) is installed on the upper side of the end of the auxiliary leaf spring (11) by bolts. The upper end of the connecting plate (22) is connected to the buffer support body (23), and the lower end of the lower mounting plate (25) is provided with a matching groove that matches the buffer support body (23); A middle buffer is also provided between the main leaf spring (10) and the auxiliary leaf spring (11).

2. The double-leaf spring according to claim 1, characterized in that: Both ends of the main spring (10) are mounted with the coil ears (12) via bolts.

3. The double-leaf spring according to claim 2, characterized in that: The connecting member includes an upper clamp, a pad and a lower clamp. The upper clamp is provided on the outer side of the middle part of the main plate spring (10), and the lower clamp is provided on the outer side of the middle part of the auxiliary plate spring (11). The pad is located between the upper clamp and the lower clamp. Screw holes are provided inside the upper clamp, the pad and the lower clamp, and fixing bolts are installed inside the screw holes.

4. The double-leaf spring according to claim 3, characterized in that: The upper clamping member and the lower clamping member both comprise a pressing plate (20) and a supporting plate (21), wherein the pressing plate (20) is located above the supporting plate (21).

5. The double-leaf leaf spring according to claim 1, characterized in that: The middle buffer member includes a mounting member, a buffer pressure rod (30), a slider (31), a buffer spring (32) and a connecting rod (35). The mounting member is provided on the outer side of the main spring (10). The lower end of the mounting member is connected to the connecting rod (35). One end of the connecting rod (35) is hinged to the buffer pressure rod (30). A mounting groove is provided inside the upper end of the auxiliary leaf spring (11). The slider (31) is slidably connected inside the mounting groove. The buffer spring (32) is also provided inside the mounting groove. One end of the buffer spring (32) is connected to the slider (31). The slider (31) is set to a T shape. The upper end of the slider (31) is hinged to the buffer pressure rod (30).

6. The double-leaf spring according to claim 5, characterized in that: The mounting member includes an upper mounting plate 2 (33) and a lower mounting plate 2 (34), the upper end of the main spring (10) is mounted with the upper mounting plate 2 (33), the lower end of the main spring (10) is mounted with the lower mounting plate 2 (34), the lower end of the lower mounting plate 2 (34) is connected with the connecting rod (35), the main spring (10) is located between the upper mounting plate 2 (33) and the lower mounting plate 2 (34), and the upper mounting plate 2 (33) and the lower mounting plate 2 (34) are mounted on the outside of the main spring (10) by bolts.

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