Clearance-adjustable elastic assembly for automobile torsion damper

Abstract

The utility model relates to a clearance-adjustable elastic component, in particular to a clearance-adjustable elastic component for an automobile torsion damper, which comprises a spring seat, an arc-shaped spring, a spring cushion block and an adjusting screw. The arc-shaped spring is arranged in an opening of the spring seat, the bottom of the spring cushion block is attached to the tip of the adjusting screw, the adjusting screw is arranged in a round reserved opening in the bottom of the spring seat, and a threaded hole matched with the spring seat is formed in the spring seat. When the arc-shaped spring is compressed for a long time and cannot rebound to restore the original length, a gap is generated between the arc-shaped spring and the spring seat, so that abnormal sound is possibly generated by the torsion vibration reduction mechanism, the vibration reduction effect becomes poor, and the gap between the spring seat and the arc-shaped spring can be eliminated by screwing the adjusting screw. The elastic assembly can prolong the service life of the arc-shaped spring, guarantees the vibration reduction characteristic, and is simple in structure and convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to an elastic component with adjustable clearance, specifically an elastic component for adjusting the clearance of an automotive torsional damper, which enables the arc spring not to be replaced, thereby prolonging the service life of the arc spring and the torsional damping mechanism. Background Art

[0002] Automotive torsional dampers are components widely used in modern automobiles and are important elements in automotive clutches. The elastic element is used to reduce the torsional stiffness at the front end of the transmission system, thereby reducing a certain natural frequency of the torsional system of the transmission system, changing the natural vibration mode of the system, enabling it to avoid the excitation caused by the main harmonic of the engine torque, reducing the torsional stiffness of the joint part between the engine crankshaft and the transmission system, thereby reducing the natural frequency of torsional vibration of the transmission system, and improving the stability and reliability of the transmission system.

[0003] However, there are some problems in the existing automotive torsional damping mechanism during use: due to the long-term compression operation of the arc spring, the elasticity of the arc spring will become poor and it cannot rebound and recover after long-term use, resulting in a clearance between the arc spring and the spring seat. Therefore, abnormal noise and vibration will occur during the operation of the torsional damper, and the damping effect will become poor. However, at this time, the arc spring still has usability, and direct replacement will increase the use cost. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an elastic component with adjustable clearance for an automotive torsional damper to solve the above problems.

[0005] The utility model realizes the above purpose through the following technical solutions: It includes a spring seat, an arc spring, a spring pad, and an adjusting screw. A damping elastic component is composed of two spring seats and an arc spring, and is placed in the arc-shaped cavity of the damping mechanism inside the torsional damper. One end of the spring seat away from the arc spring abuts against two bosses in the arc-shaped cavity respectively, so that the damping elastic component is stably placed in the arc-shaped cavity. The engine torque is transmitted to the damping elastic component through the primary mass of the torsional damper. The arc spring compresses and damps along the arc line in the arc-shaped cavity, reducing the vibration of the secondary mass and the transmission mechanism connected thereto, thereby achieving the purpose of torsional damping.

[0006] As a further scheme of the utility model: The spring pad is composed of two cylinders with different diameters up and down, is placed in the opening of the spring seat, abuts against the inner wall of the spring seat opening, and its bottom fits with the tip of the adjusting screw. The adjusting screw is placed in the circular reserved opening at the bottom of the spring seat, and a threaded hole matching with it is provided inside the spring seat.

[0007] As a further solution of the present utility model: Both ends of the arc-shaped spring are placed inside the opening of the spring seat, and its end face is in contact with the top of the larger-diameter cylinder at the lower end of the spring cushion block, and its inner wall is in contact with the side wall of the smaller-diameter cylinder at the upper end of the spring cushion block, so that the arc-shaped spring and the spring cushion block are stably placed inside the opening of the spring seat.

[0008] As a further solution of the present utility model: There is an incomplete opening at the top of the spring seat, forming a three-sided rectangle with a trapezoidal side shape to fit the shape of the arc-shaped spring. The inner wall is coated with grease to reduce wear between it and the arc-shaped spring. The bottom is semi-circular arc-shaped to fit the shape of the arc-shaped inner cavity and the boss in the arc-shaped inner cavity inside the torsional damper. A circular reserved opening is provided at the center of the bottom.

[0009] As a further solution of the present utility model: The surface of the spring cushion block is coated with grease to reduce wear between it and the inner wall of the arc-shaped spring and the spring seat.

[0010] As a further solution of the present utility model: When the arc-shaped spring cannot recover after long-term compression work and its length becomes shorter, and a gap is generated between the spring cushion block connected to its end face and the bottom of the opening of the spring seat, tighten the adjusting screw from the reserved opening so that the tip of the adjusting screw contacts the bottom of the spring cushion block and pushes the spring cushion block until its top is in close contact with the end face of the arc-shaped spring to eliminate the gap and make the arc-shaped spring obtain a certain pre-tightening force.

[0011] The beneficial effects of the present utility model are as follows: The present utility model adopts an elastic component for adjusting the gap of an automotive torsional damper. When the arc-shaped spring cannot rebound and recover its original length after long-term compression work, a gap will be generated between it and the spring seat. At this time, the gap between the spring seat and the arc-shaped spring can be eliminated by tightening the adjusting screw, so that the arc-shaped spring does not need to be replaced, which can better perform vibration damping, play a role in extending the service life of the arc-shaped spring and the torsional damping mechanism, reduce the use cost. At the same time, the structure of the present utility model is simple and convenient for disassembly and assembly. Brief Description of the Drawings

[0012] Figure 1 It is a three-dimensional schematic diagram of the present utility model.

[0013] Figure 2 It is a three-dimensional exploded view of the present utility model.

[0014] Figure 3 It is a schematic diagram of the process of adjusting the gap of the present utility model.

[0015] In the figure: 1. Spring seat, 2. Arc-shaped spring, 3. Spring cushion block, 4. Adjusting screw, 5. Reserved opening. Detailed Embodiment

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0017] As Figure 1-2 shown, an elastic component for adjusting the clearance of an automotive torsional damper designed by the present utility model includes: a spring seat 1, an arc-shaped spring 2, a spring pad 3, and an adjusting screw 4. A damping elastic component is composed of two spring seats 1 and an arc-shaped spring 2 and is placed in the arc-shaped inner cavity of the damping mechanism inside the torsional damper. One end of the spring seat 1 away from the arc-shaped spring 2 abuts against two bosses in the arc-shaped inner cavity, so that the damping elastic component is stably placed in the arc-shaped inner cavity.

[0018] The spring pad 3 is composed of two cylinders with different diameters up and down. It is placed in the opening of the spring seat 1 and abuts against the inner wall of the opening of the spring seat 1. Its bottom fits with the tip of the adjusting screw 4. The adjusting screw 4 is placed in the circular reserved opening 5 at the bottom of the spring seat 1, and a threaded hole matching it is provided inside the spring seat 1.

[0019] Both ends of the arc-shaped spring 2 are placed in the opening of the spring seat 1. Its end face fits with the top of the cylinder with a larger diameter at the lower end of the spring pad 3, and its inner wall fits with the side wall of the cylinder with a smaller diameter at the upper end of the spring pad 3, so that the arc-shaped spring 2 and the spring pad 3 are stably placed in the opening of the spring seat 1.

[0020] The top of the spring seat 1 has an incomplete opening, forming a three-sided rectangle with a trapezoidal side shape to fit the shape of the arc-shaped spring 2. The inner wall is coated with grease to reduce the wear between it and the arc-shaped spring 2. The bottom is semi-circular arc-shaped to fit the shape of the torsional damping mechanism, and a circular reserved opening 5 is provided in the center of the bottom. The surface of the spring pad 3 is coated with grease to reduce the wear between it and the inner wall of the arc-shaped spring 2 and the spring seat 1.

[0021] When using this elastic component for adjusting the clearance of an automotive torsional damper, first, during use, through the torsional damping mechanism, the natural frequency of the engine and transmission vibration system can be reduced. However, after long-term use, the elastic ability of the arc-shaped spring 2 will weaken and it cannot rebound and recover, resulting in a gap between the arc-shaped spring 2 and the spring seat 1, thereby generating abnormal noises and the damping effect deteriorating.

[0022] As Figure 3As shown, when the arc spring 2 cannot recover after long-term compression work and its length becomes shorter, and a gap is generated between the spring pad 3 connected to its end face and the bottom of the opening of the spring seat 1, an inner hexagon wrench is inserted through the reserved port 5 to tighten the adjusting screw 4. Through the threaded hole inside the spring seat 1 that cooperates with the adjusting screw 4, the tip of the adjusting screw 4 is brought into contact with the bottom of the spring pad 3 and the spring pad 3 is pushed until its top is in close contact with the arc spring 2, so that the gap is eliminated and the arc spring 2 obtains a certain pre-tightening force. Furthermore, the arc spring 2 does not need to be replaced, can better perform vibration damping, and at the same time improves the overall service life of the arc spring 2 and the torsional vibration damping mechanism.

Claims

1. An elastic component for an adjustable clearance of a torsional vibration damper of an automobile, characterized in that: include: A spring seat (1), an arc spring (2), a spring pad (3), and an adjusting screw (4), wherein both ends of the arc spring (2) are placed in the opening of the spring seat (1), and the end surface of the arc spring (2) is fitted with the top of the spring pad (3); the spring pad (3) is placed in the opening of the spring seat (1), and the bottom of the spring pad (3) is fitted with the tip of the adjusting screw (4); the adjusting screw (4) is placed in a circular reserved opening (5) at the bottom of the spring seat (1), and a threaded hole matching the spring screw is provided inside the spring seat (1).

2. The elastic component for adjustable clearance of a torsional vibration damper of an automobile according to claim 1, characterized in that: The spring seat (1) has an incomplete opening at the top, forming a three-sided rectangle, the side shape of which is a trapezoid, the inner wall is coated with grease, the bottom is a semicircular arc, and a circular reserved opening (5) is provided in the center of the bottom.

3. The elastic component for adjustable clearance of automobile torsional vibration damper according to claim 1, characterized in that: The surface of the spring pad (3) is coated with lubricating grease.

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