CN211343872U

CN211343872U - Variable damping and variable rotating radius centrifugal pendulum bob mechanism

Info

Publication number: CN211343872U
Application number: CN201921962241.9U
Authority: CN
Inventors: 邱毅凡
Original assignee: HASCO Powertrain Components Systems Shanghai Co Ltd
Current assignee: HASCO Powertrain Components Systems Shanghai Co Ltd
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2020-08-25
Anticipated expiration: 2029-11-14

Abstract

The utility model discloses a variable damping and variable radius of rotation's centrifugal pendulum mechanism, divide assembly and spring rivet to divide the assembly including first pendulum, intermediate plate, second pendulum, damping roller, the second pendulum assembles between two intermediate plates, and first pendulum divides the assembly to assemble in the outside of two intermediate plates through spring rivet, assembles damping roller branch assembly in the both ends conical surface space that waist type hole on two first pendulums formed, centrifugal pendulum mechanism arranges on centrifugal pendulum shock absorber along the circumferencial direction, and is different along with engine speed and angular acceleration, and the swing damping of automatic compensation centrifugal pendulum and the radius of rotation of automatic adjustment pendulum. The utility model has the advantages that self-compensating centrifugal pendulum swing damping and automatic adjustment pendulum turning radius promote the damping effect.

Description

Variable damping and variable rotating radius centrifugal pendulum bob mechanism

Technical Field

The utility model relates to a vibration damper of automobile power assembly, in particular to variable damping and variable turning radius's centrifugal pendulum bob mechanism.

Background

Different driving conditions exist in the running process of the automobile, such as idling conditions, driving conditions, idling crawling conditions and the like, and different conditions need corresponding vibration reduction frequencies.

Along with the continuous improvement of the comfort level requirement of driving among the automobile operation process, traditional clutch driven plate has been unable to satisfy the requirement to whole car damping performance, and traditional centrifugal pendulum shock absorber still has certain limitation under many operating modes though can promote damping performance, and this is the place that this application needs to be improved emphatically.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a variable damping and variable turning radius's centrifugal pendulum bob mechanism is to be provided, can both provide more excellent damping performance for the car under different work condition.

In order to solve the technical problem above, the utility model provides a variable damping and variable radius of rotation's centrifugal pendulum bob mechanism, centrifugal pendulum bob mechanism includes that first pendulum bob, intermediate plate, second pendulum bob, damping roller divide assembly and spring rivet to divide the assembly, and the second pendulum bob assembles between two intermediate plates, and first pendulum bob divides the assembly to assemble in the outside of two intermediate plates through the spring rivet, and the damping roller divides the assembly in the both ends conical surface space that waist type hole on two first pendulum bodes formed, centrifugal pendulum bob mechanism arranges on centrifugal pendulum shock absorber along the circumferencial direction, and the quantity of arranging is confirmed according to actual conditions, and is different along with engine speed and angular acceleration, the swing damping of automatic compensation centrifugal pendulum bob and the radius of rotation of automatic adjustment pendulum bob.

The damping roller sub-assembly comprises a conical roller nail, a roller wheel, an elastic component and a conical roller cap, wherein the elastic component is arranged at the center of the roller wheel, and the conical roller nail penetrates through the center of the elastic component to be in interference connection or welded connection with the conical roller cap to form the damping roller sub-assembly.

The conical surface structures are arranged on the conical roller nail and the conical roller cap, so that symmetrical conical surface structures are formed at two ends of the damping roller sub-assembly. In the working process, the conical surface structure is in contact with the waist-shaped hole conical surfaces on the two first pendulums, the centrifugal force borne by the pendulum mechanism can also change along with the change of the rotating speed and the angular acceleration of an engine, in the process, the conical surface on the damping roller subassembly and the waist-shaped hole conical surface on the first pendulum generate relative friction and axial stress relation, the distance between the two first pendulums changes along with the change, and meanwhile, the position of conical surface contact can also change, so that the rotating radius of the pendulum mechanism changes. In the process of changing the distance between the two first pendulums, the friction force generated by the adjacent parts of the first pendulums is changed, so that variable damping is generated.

The spring rivet subassembly includes hollow rivet, spring and spring holder, and the spring assembly is in hollow rivet's recess, the boss interference fit that sets up in spring internal diameter and the hollow rivet, spring holder and opposite side spring internal diameter interference fit, spring rivet subassembly provides the return force for it when the interval between two first pendulums changes, and when engine speed dropped to a definite value, pendulum mechanism can resume initial operating position.

Two ends of the first pendulum bob are respectively provided with a waist-shaped hole, and the surface of each waist-shaped hole is a conical surface.

A plurality of spring rivet holes are formed between waist-shaped holes at two ends of the first pendulum bob.

The middle plate is provided with a groove, a rivet pin hole and a rivet hole for assembling the second pendulum bob, and the second pendulum bob is assembled between the two middle plates through the rivet pin.

At the in-process of centrifugal pendulum shock absorber work, along with the change of engine speed and output angular acceleration, the utility model discloses a turning radius of pendulum mechanism adjustment pendulum, simultaneously along with turning radius's change, interval between two first pendulums can change, through with the adjacent part friction in the centrifugal pendulum shock absorber, the swing damping of adjustment pendulum mechanism.

The adjacent parts belong to conventional parts, and are not described in detail in the present invention. Owing to set up the buffering spacing usually when needing to work extreme position for the pendulum in traditional centrifugal pendulum structure, generally adopt nylon rubber combined material's stopper, the utility model discloses a function that the elastomeric element that sets up replaces this part in the damping roller subassembly. The elastic component is a wave spring or a rubber spring.

The utility model has the advantages that:

1) the utility model automatically compensates the pendulum mass swinging damping of the centrifugal pendulum according to the difference between the rotating speed and the angular acceleration of the engine, so as to improve the vibration damping effect;

2) the utility model automatically adjusts the pendulum mass rotating radius along with the difference between the engine rotating speed and the angular acceleration, so as to improve the vibration damping effect;

3) the utility model adopts the damping roller sub-assembly to replace the limiting block made of nylon rubber composite material in the traditional centrifugal pendulum structure, provides buffer when the pendulum bob swings to the maximum pendulum angle, saves the space of the limiting block, and can improve the overall quality of the pendulum bob mechanism by utilizing the saved space so as to improve the damping effect;

4) the utility model discloses integrated variable damping and variable radius pendulum mechanism's centrifugation pendulum automobile shock absorber is applied to in power assembly products such as automobile clutch, dual mass flywheel and torque converter.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the assembly of the present invention;

fig. 2a and 2b are cross-sectional views of the assembly of the present invention;

FIG. 3 is an exploded view of the assembly of the present invention;

FIG. 4 is a sectional view of the damping roller subassembly of the present invention;

FIG. 5 is a sectional view of the spring rivet subassembly of the present invention;

the reference numbers in the figures illustrate:

1-a first pendulum bob; 2-a middle plate;

3-a second pendulum bob; 4-rivet pin;

101-damping roller sub-assembly;

5-conical roller nail; 6-a roller wheel;

7-wave spring; 8-tapered roller caps;

201-spring rivet subassembly;

9-hollow rivet; 10-a spring;

11-spring seat.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Figure 1 shows a schematic view of the assembly of the present invention; figure 2a shows a cross-sectional view of the inventive assembly; FIG. 2B shows a view from the B-B direction of FIG. 2 a; figure 3 shows an exploded view of the assembly of the present invention; figure 4 shows a cross-sectional view of a damping roller subassembly of the present invention; figure 5 shows a cross-sectional view of the spring rivet subassembly of the present invention.

As shown in fig. 1-5, the present invention provides a variable damping and variable turning radius centrifugal pendulum bob mechanism, which includes a first pendulum bob 1, an intermediate plate 2, a second pendulum bob 3, a rivet pin 4, a damping roller subassembly 101, and a spring-rivet subassembly 201. In this embodiment, be provided with two waist type holes and three spring rivet hole on first pendulum 1, waist type hole face is the conical surface, be provided with two intermediate lamella 2 between two first pendulums 1, be equipped with the recess that assembly second pendulum 3 was used on intermediate lamella 2, rivet pinhole and spring rivet hole, second pendulum 3 assembles between two intermediate lamella 2 through rivet round pin 4, first pendulum 1 assembles in two intermediate lamella 2 outsides through spring rivet subassembly 201, assemble damping roller subassembly 101 in the both ends conical surface space that waist type hole formed on two first pendulum 1. The centrifugal pendulum bob mechanism is arranged on the centrifugal pendulum absorber along the circumferential direction, the arrangement quantity is determined according to actual conditions, and the swinging damping of the centrifugal pendulum bob is automatically compensated and the rotating radius of the bob is automatically adjusted along with the difference between the rotating speed and the angular acceleration of the engine.

As shown in fig. 4, the damping roller subassembly 101 includes a conical roller pin 5, a roller wheel 6, a wave spring 7, and a conical roller cap 8, the wave spring 7 is installed at the center of the roller wheel 6, and the conical roller pin 5 passes through the center of the wave spring 7 and is connected with the conical roller cap 8 in an interference fit manner or in a welding manner, so as to form the damping roller subassembly 101.

The conical surface structures are arranged on the conical roller nail 5 and the conical roller cap 8, so that symmetrical conical surface structures are formed at two ends of the damping roller sub-assembly 101. In the working process, the conical surface structure is in contact with the conical surfaces of the kidney-shaped holes in the two first pendulums 1, the centrifugal force borne by the pendulum mechanism can also change along with the change of the rotating speed and the angular acceleration of an engine, in the process, the conical surface on the damping roller subassembly 101 and the conical surface of the kidney-shaped hole in the first pendulum 1 generate relative friction and axial stress relation, the distance between the two first pendulum bob 101 changes along with the change of the distance, and meanwhile, the contact position of the conical surface can also change, so that the rotating radius of the pendulum mechanism changes. In the process of changing the distance between the two first pendulums, the friction force generated by the adjacent parts of the first pendulums is changed, so that variable damping is generated.

As shown in fig. 5, the spring and rivet subassembly 201 includes a hollow rivet 9, a spring 10 and a spring seat 11, the spring 10 is assembled in a groove of the hollow rivet 9, the inner diameter of the spring 10 is in interference fit with a boss arranged in the hollow rivet 9, the spring seat 11 is in interference fit with the inner diameter of the spring 10 on the other side, the spring and rivet subassembly 201 provides a return force for the two first pendulums 1 in the process of changing the distance between the two first pendulums, and when the engine speed drops to a certain value, the pendulum mechanism can be restored to the initial working position.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A variable-damping and variable-rotation-radius centrifugal pendulum mechanism is characterized by comprising a first pendulum, a middle plate, a second pendulum, a vibration reduction roller sub-assembly and a spring rivet sub-assembly, wherein the second pendulum is assembled between the two middle plates, the first pendulum is assembled on the outer sides of the two middle plates through the spring rivet sub-assembly, the vibration reduction roller sub-assembly is assembled in a space of conical surfaces at two ends formed by waist-shaped holes in the two first pendulums, the centrifugal pendulum mechanism is arranged on a centrifugal pendulum vibration absorber along the circumferential direction, and the swing damping of the centrifugal pendulum is automatically compensated and the rotation radius of the pendulum is automatically adjusted along with the difference between the rotating speed and the angular acceleration of an engine.

2. The variable damping and variable turning radius centrifugal pendulum mechanism of claim 1, wherein the damping roller subassembly comprises a tapered roller pin, a roller wheel, an elastic component and a tapered roller cap, wherein the elastic component is arranged at the center of the roller wheel, and the tapered roller pin penetrates through the center of the elastic component and is in interference fit or welded connection with the tapered roller cap to form the damping roller subassembly.

3. The variable damping and variable turning radius centrifugal pendulum bob mechanism of claim 2, wherein the tapered roller pin and the tapered roller cap are both provided with a conical surface structure, such that the two ends of the damping roller subassembly form a symmetrical conical surface structure.

4. The variable-damping and variable-rotation-radius centrifugal pendulum bob mechanism of claim 1, wherein the spring-rivet sub-assembly comprises a hollow rivet, a spring and a spring seat, the spring is assembled in a groove of the hollow rivet, the inner diameter of the spring is in interference fit with a boss arranged in the hollow rivet, the spring seat is in interference fit with the inner diameter of the spring on the other side, and the spring-rivet sub-assembly provides a return force for the first two pendulums in the process of changing the distance between the first two pendulums.

5. The variable damping and variable radius of rotation centrifugal pendulum bob mechanism of claim 1, wherein: two ends of the first pendulum bob are respectively provided with a waist-shaped hole, and the surface of each waist-shaped hole is a conical surface.

6. The variable damping and variable turning radius centrifugal pendulum bob mechanism of claim 5, wherein a plurality of spring rivet holes are provided between the kidney holes at both ends of the first bob.

7. The variable damping and variable radius of rotation centrifugal pendulum bob mechanism of claim 1, wherein: the middle plate is provided with a groove, a rivet pin hole and a rivet hole for assembling the second pendulum bob, and the second pendulum bob is assembled between the two middle plates through the rivet pin.