Spring and damper integrated assembly for automotive torsional vibration damper

Abstract

The utility model relates to a spring and damping integrated assembly, specifically a spring and damping integrated assembly for automobile torsional damper, including arc spring, short spring cover, oil ring, long spring cover. Arc spring is placed in short spring cover and long spring cover cavity, short spring cover is placed in long spring cover cavity, and short spring cover shell is close to open loop shallow groove installation oil ring at the opening end. Short spring cover and long spring cover outside fill the grease, and can relatively rotate in the direction of the arc, and the cavity inner wall is opened shallow groove, and the cavity fills the damping grease. The traditional automobile torsional damper provides smaller damping by the frictional damping of the relative rotation between two stage flywheel and the grease around the spring. The utility model can fill the grease and the damping grease respectively, the grease lubricates the outside of spring cover, the damping grease has the moment of resistance effect to arc spring and spring cover inner recess, the greater the relative speed is, the greater the moment of resistance is, and the more obvious the damping effect is, can effectively attenuate the torsional vibration.

Description

Technical Field

[0001] This utility model relates to an integrated spring and damping assembly, specifically an integrated spring and damping assembly for automotive torsional shock absorbers. Background Technology

[0002] Automotive torsional vibration dampers are widely used components in modern automobiles and are important parts in automotive clutches. Their elastic elements reduce a certain natural frequency of the transmission system, preventing resonance and reducing noise. Damping elements effectively dissipate vibration energy, rapidly decaying torsional vibrations and reducing alternating stress on the transmission system. Since fluid damping is related to the square of the relative velocity, achieving damping and vibration reduction through fluid-solid interactions in existing dual-mass flywheels has significant engineering application value.

[0003] Traditional automotive torsional dampers primarily rely on built-in damping springs for torsional vibration reduction, supplemented by frictional damping from the relative rotation of the two-stage flywheels and minor damping from the grease surrounding the damping spring. This results in relatively low overall damping. To more effectively suppress torsional vibration, a spring-damping integrated component for automotive torsional dampers has been designed. This component can be filled with grease and damping grease separately. Grease is filled on the outside of the spring sleeve to lubricate the contact between the spring sleeve and other components, while damping grease is filled inside the spring sleeve to integrate the spring and damping. This results in greater damping for the damper, reduced wear on the arc spring, and extended its service life. Furthermore, this invention features a simple structure, small footprint, and convenient assembly and disassembly. Summary of the Invention

[0004] To address the issue of low damping in traditional torsional dampers, this invention provides an integrated spring and damping assembly for automotive torsional dampers.

[0005] This utility model achieves the above-mentioned objectives through the following technical solution: it includes an arc-shaped spring, a short spring sleeve, an oil ring, and a long spring sleeve. The two ends of the arc-shaped spring are respectively placed inside the cavities of the short spring sleeve and the long spring sleeve, and its end face is in contact with the bottom of the hemispherical ends of the short spring sleeve and the long spring sleeve, and its surrounding area is filled with damping grease. The outer diameter of the short spring sleeve is slightly smaller than the inner diameter of the long spring sleeve. It is placed inside the cavity of the long spring sleeve and can rotate relative to the long spring sleeve in the arc direction. The short spring sleeve outer shell has a shallow annular groove near the opening end to install the oil ring. The inner walls of the cavities of the short spring sleeve and the long spring sleeve have spiral shallow grooves. The gaps between the short spring sleeve, the long spring sleeve and the arc-shaped spring are filled with damping grease.

[0006] As a further improvement of this utility model: both the short spring sleeve and the long spring sleeve are arc-shaped, with one end open and the other end being a hemisphere. The outer part is filled with grease, and the inner part is hollow with a spiral shallow groove on the inner wall. The cavity and the shallow groove store a certain amount of damping grease. The short spring sleeve is slightly shorter than the long spring sleeve, and the outer diameter of the short spring sleeve is slightly smaller than the inner diameter of the long spring sleeve. A shallow annular groove is formed near the open end of the short spring sleeve, and the groove's inner diameter matches that of the oil ring. The oil ring is installed in the shallow annular groove of the short spring sleeve, and its outer diameter matches the inner diameter of the long spring sleeve.

[0007] As a further improvement of this invention: an oil ring is installed at the open end of the short spring sleeve and partially inserted into the open end of the long spring sleeve, allowing it to rotate relative to the long spring sleeve in an arc direction. An arc-shaped spring is placed within their cavity, and the compression limit of the arc-shaped spring is the limit position of the spring sleeve compression. The hemispherical ends of the short and long spring sleeves respectively contact the arms of the shock absorber's force transmission plate, simultaneously limiting the limit position of the spring sleeve's elongation. The exterior of the short and long spring sleeves is filled with grease to lubricate the relative movement between the spring sleeves and the force transmission plate.

[0008] The beneficial effects of this utility model are as follows: This utility model uses an integrated spring and damping component for automotive torsional shock absorbers. The spring and damping are integrated by filling the spring sleeve with damping grease. The damping grease exerts a resisting torque on the arc-shaped spring and the spiral grooves within the spring sleeve. The greater the relative rotational speed, the greater the resisting torque, resulting in a more significant damping effect and effectively attenuating torsional vibrations. Simultaneously, the oil ring scrapes the damping grease from the inner wall of the long spring sleeve back around the arc-shaped spring, ensuring a certain degree of sealing within the spring sleeve. This reduces wear on the arc-shaped spring, extends its service life, and the utility model has a simple structure, occupies little space, and is convenient to assemble and disassemble. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall assembly of this utility model.

[0010] Figure 2 This is an overall three-dimensional exploded view of the present invention.

[0011] Figure 3 This is a three-dimensional sectional view of the short spring sleeve of this utility model.

[0012] Figure 4 This is a three-dimensional sectional view of the long spring sleeve of this utility model. Detailed Implementation

[0013] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0014] like Figure 1-2As shown, the present invention discloses an integrated spring and damping assembly for an automotive torsional shock absorber, comprising: an arc-shaped spring 1, a short spring sleeve 2, an oil ring 3, and a long spring sleeve 4. The two ends of the arc-shaped spring 1 are respectively placed inside the cavities of the short spring sleeve 2 and the long spring sleeve 4, with its end face fitting against the bottom of the hemispherical ends of the short spring sleeve 2 and the long spring sleeve 4, and its surrounding area is filled with damping grease. The outer diameter of the short spring sleeve 2 is slightly smaller than the inner diameter of the long spring sleeve 4. It is placed inside the cavity of the long spring sleeve 4 and can rotate relative to the long spring sleeve 4 in the arc direction. The outer shell of the short spring sleeve 2 has a shallow annular groove near the opening end for installing the oil ring 3. The inner walls of the cavities of the short spring sleeve 2 and the long spring sleeve 4 have spiral shallow grooves, and the gaps between the short spring sleeve 2, the long spring sleeve 4, and the arc-shaped spring 1 are filled with damping grease.

[0015] Both the short spring sleeve 2 and the long spring sleeve 4 have an arc shape, with one end open and the other end being a hemisphere. The outer part is filled with grease, and the inner part is hollow with a spiral shallow groove on the inner wall. The cavity and shallow groove store a certain amount of damping grease. The short spring sleeve 2 is slightly shorter than the long spring sleeve 4, and the outer diameter of the short spring sleeve 2 is slightly smaller than the inner diameter of the long spring sleeve 4. Near the open end of the short spring sleeve 2, there is an annular shallow groove, the inner diameter of which matches that of the oil ring 3. The oil ring 3 is installed at the annular shallow groove of the short spring sleeve 2, and its outer diameter matches the inner diameter of the long spring sleeve 4.

[0016] The short spring sleeve 2 has an oil ring 3 installed at its open end and is partially inserted into the open end of the long spring sleeve 4. It can rotate relative to the long spring sleeve 4 in an arc direction. The arc spring 1 is placed inside their cavity. The compression limit of the arc spring 1 is the limit position of the spring sleeve compression. The hemispherical ends of the short spring sleeve 2 and the long spring sleeve 4 respectively contact the arm of the force transmission plate of the shock absorber, while limiting the limit position of the spring sleeve elongation. The short spring sleeve 2 and the long spring sleeve 4 are filled with grease to lubricate the relative movement between the spring sleeve and the force transmission plate.

[0017] In its specific implementation, this utility model designs an integrated spring and damping assembly for an automotive torsional shock absorber. It utilizes a short spring sleeve 2, an arc-shaped spring 1, and a long spring sleeve 4 in conjunction, with damping grease filling the area around the arc-shaped spring 1 to achieve integrated spring and damping. The damping grease exerts a resisting torque on the arc-shaped spring 1 and the spiral grooves within the spring sleeve; the higher the relative rotational speed, the greater the resisting torque, resulting in a more pronounced damping effect and effectively attenuating torsional vibrations. Simultaneously, the oil ring 3 scrapes the damping grease from the inner wall of the long spring sleeve 4 back around the arc-shaped spring 1, ensuring a certain degree of sealing within the spring sleeve. This reduces wear on the arc-shaped spring 1, extends its service life, and the utility model features a simple structure, small footprint, and convenient assembly and disassembly.

Claims

1. An integrated spring and damping assembly for automotive torsional shock absorbers, characterized in that: The assembly includes an arc spring (1), a short spring sleeve (2), an oil ring (3), and a long spring sleeve (4). The two ends of the arc spring (1) are respectively placed inside the cavities of the short spring sleeve (2) and the long spring sleeve (4), and its end face is in contact with the bottom of the hemispherical end of the short spring sleeve (2) and the long spring sleeve (4). Damping grease is filled around it. The outer diameter of the short spring sleeve (2) is slightly smaller than the inner diameter of the long spring sleeve (4). It is placed inside the cavity of the long spring sleeve (4) and can rotate relative to the long spring sleeve (4) in the arc direction. The outside of the short spring sleeve (2) and the long spring sleeve (4) is filled with grease. An annular shallow groove is opened near the opening end of the outer shell of the short spring sleeve (2) to install the oil ring (3). A spiral shallow groove is opened on the inner wall of the cavity of the short spring sleeve (2) and the long spring sleeve (4). Damping grease is filled in the gap between the short spring sleeve (2), the long spring sleeve (4) and the arc spring (1).

2. The integrated spring and damping assembly for an automotive torsional damper according to claim 1, characterized in that: Both the short spring sleeve (2) and the long spring sleeve (4) are arc-shaped, with one end open and the other end being a hemisphere. The outside is filled with grease and the inside is hollow. The inner wall has a spiral shallow groove. The cavity and the shallow groove store a certain amount of damping grease. The short spring sleeve (2) is slightly shorter than the long spring sleeve (4). The outer diameter of the short spring sleeve (2) is slightly smaller than the inner diameter of the long spring sleeve (4). The short spring sleeve (2) has an annular shallow groove near the open end. The shallow groove is consistent with the inner diameter of the oil ring (3). The oil ring (3) is installed at the annular shallow groove of the short spring sleeve (2). The outer diameter of the oil ring (3) matches the inner diameter of the long spring sleeve (4).

3. The integrated spring and damping assembly for an automotive torsional shock absorber according to claim 1, characterized in that: The short spring sleeve (2) has an oil ring (3) installed at its open end and is partially inserted into the open end of the long spring sleeve (4). It can rotate relative to the long spring sleeve (4) in an arc direction. The arc spring (1) is placed in their cavity. The compression limit of the arc spring (1) is the limit position of the spring sleeve compression. The hemispherical ends of the short spring sleeve (2) and the long spring sleeve (4) respectively contact the arm of the force transmission plate of the shock absorber, while limiting the limit position of the spring sleeve extension. The short spring sleeve (2) and the long spring sleeve (4) are filled with grease to lubricate the relative movement between the spring sleeve and the force transmission plate.

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