Leaf spring assembly

Abstract

The utility model relates to the technical field of leaf springs, in particular to a leaf spring assembly which comprises a main leaf spring and an auxiliary leaf spring, the auxiliary leaf spring is located above the main leaf spring, a positioning rod is inserted in the main leaf spring and the auxiliary leaf spring in a penetrating mode, and clamping sleeves are arranged on the main leaf spring and the auxiliary leaf spring in a sleeved mode. Adjusting devices are arranged at the two ends of the main spring piece correspondingly, each adjusting device comprises a check block, each check block is fixedly connected with one end of the main spring piece, the inner wall of each check block is rotationally connected with a pressing plate, a mounting base is slidably connected to the main spring piece, and an assembling hole is formed in the surface of each mounting base. A limiting sleeve is connected to the main spring piece in a sliding mode. According to the blade spring, the structure of the blade spring is improved, the installation base is adjusted, then the elastic force of the blade spring can be adjusted, the application range of the blade spring is widened, and stable use of the blade spring is facilitated.

Description

Technical Field

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

[0002] Leaf spring, also known as leaf spring, is an elastic element. It is mainly composed of multiple spring steel plates of different lengths, uniform widths, and equal or unequal thicknesses. The working principle of leaf spring is based on the elastic deformation of the material. When subjected to external force, the spring steel plate will bend and deform to store elastic potential energy; when the external force disappears, it relies on its own elasticity to return to its original shape. Leaf spring has the characteristics of simple structure and strong load-bearing capacity. It can withstand large vertical loads, and by reasonably designing its shape and size, it can also withstand certain lateral forces and torques.

[0003] Prior art, such as the invention with publication number CN104653681A, discloses a leaf spring assembly that can be attached to, for example, an axle or suspension component of a vehicle. The leaf spring assembly includes a leaf having a first end and a second end on opposite sides of a center point. The leaf is the only leaf in the leaf spring assembly. The leaf spring assembly also includes a first buffer and a second buffer spaced apart from the first buffer. The first buffer contacts the leaf during a first displacement of the leaf spring assembly. The second buffer also contacts the leaf during the first displacement of the leaf spring assembly.

[0004] At present, most leaf springs are of one-piece structure, and the elastic force is fixed and cannot be adjusted, which leads to a limited scope of application of the leaf springs, increases the cost of using the leaf springs, and is not conducive to the normal use of the leaf springs. Improvements are needed. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings in the prior art that most leaf springs are of an integrated structure, the elastic force is in a fixed state and cannot be adjusted, which leads to a limited scope of application of the leaf springs, increases the cost of using the leaf springs, and is not conducive to the normal use of the leaf springs. A leaf spring assembly is proposed.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a leaf spring assembly, comprising a main spring sheet and a secondary spring sheet, the secondary spring sheet being located above the main spring sheet, a positioning rod being inserted into the main spring sheet and the secondary spring sheet, a clamping sleeve being sleeved on the main spring sheet and the secondary spring sheet, an adjustment device being provided at both ends of the main spring sheet, the adjustment device comprising a stopper, the stopper being fixedly connected to one end of the main spring sheet, a pressure plate being rotatably connected to the inner wall of the stopper, a mounting seat being slidably connected to the main spring sheet, an assembly hole being provided on the surface of the mounting seat, a limiting sleeve being slidably connected to the main spring sheet, a clamping hole being provided on the surface of the limiting sleeve, and one end of the pressure plate being inserted into the clamping hole.

[0007] Preferably, the lower surface of the pressure plate is fixedly connected to a convex rack, and the upper surface of the mounting seat is fixedly connected to a clamping strip, one end of the clamping strip is inserted into the convex rack. When adjusting the elastic force of the leaf spring, the mounting seat is pulled left and right. After adjusting the position of the mounting seat, the pressure plate is closed, and the convex rack on the pressure plate is engaged with the clamping strip on the mounting seat. Then, the limit sleeve is pulled in the direction close to the mounting seat, and the limit sleeve is immediately sleeved on the pressure plate. When one side of the limit sleeve is against the mounting seat, the fastening bolt is turned, and the fastening bolt immediately passes through the positioning hole and is threaded into the mounting screw hole. Then the leaf spring can be assembled for use.

[0008] Preferably, the number of the card strips is two groups, and the two groups of card strips are mirror-imaged.

[0009] Preferably, a positioning hole is opened on the surface of the pressure plate, and the positioning hole is in the shape of a straight slot, which is convenient for fastening bolts to pass through the pressure plate.

[0010] Preferably, a mounting screw hole is provided on the upper surface of the mounting seat, and the mounting screw hole is located below the positioning hole, so as to facilitate the stable insertion of the fastening bolt into the mounting screw hole.

[0011] Preferably, one side of the limit sleeve is fixedly connected to a support block, and the inner wall of the support block is threadedly connected to a fastening bolt. Before using the leaf spring, the elastic force can be adjusted according to the usage conditions, and the fastening bolt is loosened by turning to make one end of the fastening bolt disengage from the positioning hole, and then the limit sleeve is pulled away from the block, and the limit sleeve is immediately moved away from the top of the pressure plate, and then the pressure plate is turned away.

[0012] Preferably, one end of the fastening bolt passes through the positioning hole, and one end of the fastening bolt is threadedly inserted into the mounting screw hole, effectively limiting the position of the mounting seat.

[0013] Compared with the prior art, the advantages and positive effects of the present invention are:

[0014] The present invention provides a novel method for adjusting the spring tension according to the use conditions. The spring tensioner can be adjusted according to the use conditions by turning and loosening the fastening bolt, so that one end of the fastening bolt disengages from the positioning hole, and then the limit sleeve is pulled in the direction away from the stop block, and the limit sleeve is immediately moved away from above the pressure plate, and then the pressure plate is turned away, and then the mounting seat is pulled left and right. After adjusting the position of the mounting seat, the pressure plate is closed, and the convex rack on the pressure plate is engaged with the clamping strip on the mounting seat, and then the limit sleeve is pulled in the direction close to the mounting seat, and the limit sleeve is immediately sleeved on the pressure plate. When one side of the limit sleeve is against the mounting seat, the fastening bolt is turned, and the fastening bolt immediately passes through the positioning hole and is threaded into the mounting screw hole, and then the leaf spring can be assembled for use. This scheme improves the structure of the leaf spring, realizes the adjustment of the mounting seat, and then can adjust the elastic force of the leaf spring, thereby improving the application range of the leaf spring and facilitating the stable use of the leaf spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention provides a schematic diagram of the three-dimensional structure of a leaf spring assembly;

[0016] Figure 2 The utility model proposes a leaf spring assembly Figure 1 Schematic diagram of the structure at A;

[0017] Figure 3 This is a bottom view structural diagram of a leaf spring assembly proposed in the utility model;

[0018] Figure 4 This is a schematic diagram of the local structure of a leaf spring assembly when adjusting the leaf spring assembly;

[0019] Figure 5 The utility model proposes a leaf spring assembly Figure 4 Schematic diagram of the structure at point B.

[0020] Legend:

[0021] 1. Main spring sheet; 2. Positioning rod; 3. Auxiliary spring sheet; 4. Clamping sleeve; 5. Adjusting device; 51. Stop block; 52. Pressure plate; 53. Mounting seat; 54. Assembly hole; 55. Limiting sleeve; 56. Support block; 57. Fastening bolt; 58. Positioning hole; 59. Raised rack; 510. Clamping strip; 511. Mounting screw hole; 512. Clamping hole. DETAILED DESCRIPTION

[0022] See also Figure 1-Figure 5The utility model provides a technical solution: a leaf spring assembly, comprising a main spring piece 1 and a secondary spring piece 3, the secondary spring piece 3 being located above the main spring piece 1, a positioning rod 2 being inserted into the main spring piece 1 and the secondary spring piece 3, a clamping sleeve 4 being sleeved on the main spring piece 1 and the secondary spring piece 3, an adjusting device 5 being provided at both ends of the main spring piece 1, the adjusting device 5 comprising a stopper 51, the stopper 51 being fixedly connected to one end of the main spring piece 1, a pressure plate 52 being rotatably connected to the inner wall of the stopper 51, a mounting seat 53 being slidably connected to the main spring piece 1, an assembly hole 54 being opened on the surface of the mounting seat 53, a limiting sleeve 55 being slidably connected to the main spring piece 1, a clamping hole 512 being opened on the surface of the limiting sleeve 55, and one end of the pressure plate 52 being inserted into the clamping hole 512.

[0023] In this embodiment: the lower surface of the pressure plate 52 is fixedly connected to a convex rack 59, and the upper surface of the mounting seat 53 is fixedly connected to a clamping strip 510, one end of the clamping strip 510 is inserted into the convex rack 59. When adjusting the elastic force of the leaf spring, pull the mounting seat 53 left and right. After adjusting the position of the mounting seat 53, close the pressure plate 52, and the convex rack 59 on the pressure plate 52 engages with the clamping strip 510 on the mounting seat 53. Then, pull the limiting sleeve 55 in the direction close to the mounting seat 53, and the limiting sleeve 55 is immediately sleeved on the pressure plate 52. When one side of the limiting sleeve 55 is against the mounting seat 53, rotate the fastening bolt 57, and the fastening bolt 57 immediately passes through the positioning hole 58 and is threaded into the mounting screw hole 511. Then, the leaf spring can be assembled for use.

[0024] Specifically, there are two groups of card strips 510 , and the two groups of card strips 510 are arranged in a mirror image.

[0025] Specifically, a positioning hole 58 is opened on the surface of the pressing plate 52 . The positioning hole 58 is in the shape of a straight slot, which facilitates the fastening bolt 57 to pass through the pressing plate 52 .

[0026] Specifically, a mounting screw hole 511 is provided on the upper surface of the mounting seat 53 . The mounting screw hole 511 is located below the positioning hole 58 , so that the fastening bolt 57 can be stably inserted into the mounting screw hole 511 .

[0027] In this embodiment: one side of the limiting sleeve 55 is fixedly connected to the support block 56, and the inner wall of the support block 56 is threadedly connected to the fastening bolt 57. Before using the leaf spring, the elastic force can be adjusted according to the usage conditions, and the fastening bolt 57 is rotated to loosen so that one end of the fastening bolt 57 is disengaged from the positioning hole 58, and then the limiting sleeve 55 is pulled away from the stop block 51, and the limiting sleeve 55 is immediately moved away from the top of the pressure plate 52, and then the pressure plate 52 is turned away.

[0028] Specifically, one end of the fastening bolt 57 passes through the positioning hole 58 , and one end of the fastening bolt 57 is threadedly inserted into the mounting screw hole 511 , effectively limiting the position of the mounting seat 53 .

[0029] Working principle: Before using the leaf spring, the elastic force can be adjusted according to the usage conditions, and the fastening bolt 57 is loosened to disengage one end of the fastening bolt 57 from the positioning hole 58. Then, the limiting sleeve 55 is pulled away from the stopper 51. The limiting sleeve 55 is then moved away from the top of the pressure plate 52. Then, the pressure plate 52 is turned open, and then the mounting seat 53 is pulled left and right. After adjusting the position of the mounting seat 53, the pressure plate 52 is closed, and the convex rack 59 on the pressure plate 52 is engaged with the clamping strip 510 on the mounting seat 53. Then, the pressure plate 52 is moved closer to the mounting seat. 53, the limiting sleeve 55 is then sleeved on the pressure plate 52. When one side of the limiting sleeve 55 is against the mounting seat 53, the fastening bolt 57 is turned, and the fastening bolt 57 is then passed through the positioning hole 58 and threaded into the mounting screw hole 511. The leaf spring can then be assembled for use. This solution improves the structure of the leaf spring to achieve adjustment of the mounting seat 53, and then the elastic force of the leaf spring can be adjusted, thereby increasing the applicable range of the leaf spring and facilitating the stable use of the leaf spring.

Claims

1. A leaf spring assembly, comprising a main spring sheet (1) and an auxiliary spring sheet (3), wherein the auxiliary spring sheet (3) is located above the main spring sheet (1), a positioning rod (2) is inserted between the main spring sheet (1) and the auxiliary spring sheet (3), and a clamping sleeve (4) is provided on the main spring sheet (1) and the auxiliary spring sheet (3), characterized in that: Both ends of the main spring piece (1) are provided with an adjusting device (5), the adjusting device (5) comprising a stopper (51), the stopper (51) being fixedly connected to one end of the main spring piece (1), the inner wall of the stopper (51) being rotatably connected to a pressure plate (52), the main spring piece (1) being slidably connected to a mounting seat (53), the surface of the mounting seat (53) being provided with an assembly hole (54), the main spring piece (1) being slidably connected to a limiting sleeve (55), the surface of the limiting sleeve (55) being provided with a clamping hole (512), and one end of the pressure plate (52) being inserted into the clamping hole (512).

2. The leaf spring assembly according to claim 1, wherein: The lower surface of the pressing plate (52) is fixedly connected to a convex rack (59), and the upper surface of the mounting seat (53) is fixedly connected to a clamping strip (510), with one end of the clamping strip (510) inserted into the convex rack (59).

3. The leaf spring assembly according to claim 2, wherein: The number of the card strips (510) is two groups, and the two groups of card strips (510) are arranged in a mirror image.

4. The leaf spring assembly according to claim 1, wherein: A positioning hole (58) is provided on the surface of the pressing plate (52), and the positioning hole (58) is in the shape of a straight slot.

5. The leaf spring assembly according to claim 1, wherein: The upper surface of the mounting seat (53) is provided with a mounting screw hole (511), and the mounting screw hole (511) is located below the positioning hole (58).

6. The leaf spring assembly according to claim 5, characterized in that: A support block (56) is fixedly connected to one side of the limiting sleeve (55), and a fastening bolt (57) is threadedly connected to the inner wall of the support block (56).

7. The leaf spring assembly according to claim 6, characterized in that: One end of the fastening bolt (57) passes through the positioning hole (58), and one end of the fastening bolt (57) is threadedly inserted into the mounting screw hole (511).

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