CN216143116U

CN216143116U - Torsion damper

Info

Publication number: CN216143116U
Application number: CN202120569092.0U
Authority: CN
Inventors: 陈守义; 仁良顺; 陈翔
Original assignee: Liuzhou Risun Automobile Shock Absorption Technology Co ltd
Current assignee: Liuzhou Risun Automobile Shock Absorption Technology Co ltd
Priority date: 2021-03-20
Filing date: 2021-03-20
Publication date: 2022-03-29
Anticipated expiration: 2031-03-20

Abstract

The utility model provides a torsional vibration damper which comprises an inertia ring, a plastic sheet, a rubber main spring and an inner metal piece, wherein the inner metal piece, the rubber main spring and the plastic sheet are arranged in the inertia ring, the rubber main spring is positioned between the inertia ring and the inner metal piece, the plastic sheet is positioned between the rubber main spring and the inertia ring, the inner metal sheet is provided with a limiting rod and a spring sheet, the end part of the limiting rod is provided with a limiting raised head, the end part of the spring sheet is provided with a positioning sheet, the rubber main spring is provided with a limiting groove, the limiting raised head is embedded into the limiting groove, the inertia ring is provided with a positioning hole, and the positioning sheet is embedded into the positioning hole. The utility model has the beneficial effects that: the torsional damper is convenient to assemble, has an interlocking anti-falling structure, and increases the safety factor.

Description

Torsion damper

Technical Field

The utility model relates to the field of automobile parts, in particular to a torsional damper.

Background

The torsional damper is used as a rubber part in an automobile transmission system, mainly eliminates the resonance of the transmission system in the torsional direction, and is important for the NVH of the whole automobile. Generally, the transmission shaft is used for a rear drive type, and the two-section transmission shaft is mostly arranged at the joint of the transmission shaft and a gearbox or at the joint of the transmission shaft and a rear axle. It has found numerous applications in certain SUV/MPV models.

The torsional damper is a key damping part of a transmission system, but mature parts are foreign parts, and the reliability of the torsional damper on a domestic vehicle cannot be guaranteed.

Disadvantages/drawbacks of the prior art: the assembly is inconvenient, and the product does not have interlocking anti-disengaging structure, brings the hidden danger for the safety of traveling of car.

SUMMERY OF THE UTILITY MODEL

The utility model provides a torsional vibration damper which comprises an inertia ring, a plastic sheet, a rubber main spring and an inner metal piece, wherein the inner metal piece, the rubber main spring and the plastic sheet are arranged in the inertia ring, the rubber main spring is positioned between the inertia ring and the inner metal piece, the plastic sheet is positioned between the rubber main spring and the inertia ring, the inner metal sheet is provided with a limiting rod and a spring sheet, the end part of the limiting rod is provided with a limiting raised head, the end part of the spring sheet is provided with a positioning sheet, the rubber main spring is provided with a limiting groove, the limiting raised head is embedded into the limiting groove, the inertia ring is provided with a positioning hole, and the positioning sheet is embedded into the positioning hole.

As a further improvement of the present invention, the torsional vibration damper further comprises a limit pin, and the limit pin sequentially mounts the inner metal piece, the rubber main spring, and the plastic sheet in the inertia ring.

As a further improvement of the present invention, an arc transition is disposed on the main rubber spring, and the arc transition is used for eliminating or relieving the shrinkage stress of the main rubber spring.

As a further improvement of the utility model, the plastic sheet is provided with reinforcing ribs, and the plastic sheet has self-lubricating property and wear resistance.

As a further improvement of the present invention, the inner metal piece includes a bottom plate and a first protrusion, the first protrusion is disposed on an edge of the bottom plate, a second protrusion is disposed on a side surface of the first protrusion, and a first through hole is disposed on a side wall of each second protrusion.

As a further improvement of the present invention, a second through hole is formed in the plastic sheet, a third through hole is formed in the side wall of the inertia ring, and the limiting pin passes through the first through hole in the inner metal piece, the rubber main spring, the second through hole in the plastic sheet, and the third through hole in the side wall of the inertia ring, so as to sequentially fix the inner metal piece, the rubber main spring, and the plastic sheet in the inertia ring.

As a further improvement of the utility model, one end of the limit pin is mounted in the third through hole on the side wall of the inertia ring through pressure riveting, and the other end of the limit pin is vulcanized with wear-resistant rubber.

As a further improvement of the utility model, one end face of the limiting pin subjected to the riveting process is non-circular.

As a further improvement of the present invention, the number of the second protrusions is 4, the number of the plastic sheets is 4, the number of the limiting pins is 4, the number of the third through holes is 4, and four of the third through holes are uniformly distributed on the side wall of the inertia ring.

As a further improvement of the utility model, the plastic sheet is vulcanized between the rubber main spring and the inertia ring, and the radial clearance between the plastic sheet and the inertia ring is controlled between 0 and 0.1 mm.

As a further improvement of the present invention, the inner metal piece is made of an iron material.

The utility model has the beneficial effects that: the torsional damper is convenient to assemble, has an interlocking anti-falling structure, and increases the safety factor.

Drawings

FIG. 1 is a schematic structural view of a torsional vibration damper of the present invention;

FIG. 2 is a schematic view of an inertia ring configuration of the present invention;

FIG. 3 is a schematic cross-sectional view of an inertia ring of the present invention;

FIG. 4 is a schematic view of the plastic sheet according to the present invention;

FIG. 5 is a schematic cross-sectional view of the plastic sheet according to the present invention;

FIG. 6 is a schematic view of the rubber main spring structure of the present invention;

FIG. 7 is a schematic cross-sectional view of the main rubber spring of the present invention;

FIG. 8 is a schematic view of the inner metal piece construction of the present invention;

FIG. 9 is a cross-sectional view of the metal component of the present invention;

FIG. 10 is a schematic view of a spacing pin according to the present invention;

fig. 11 is an assembly schematic of the present invention.

Detailed Description

As shown in fig. 1 to 11, the present invention discloses a torsional vibration damper, which includes an inertia ring 1, a plastic piece 2, a rubber main spring 3, an inner metal piece 4, and a limit pin 5, wherein the inner metal piece 4, the rubber main spring 3, and the plastic piece 2 are installed in the inertia ring 1, the rubber main spring 3 is located between the inertia ring 1 and the inner metal piece 4, the plastic piece 2 is located between the rubber main spring 3 and the inertia ring 1, and the limit pin 5 sequentially installs the inner metal piece 4, the rubber main spring 3, and the plastic piece 2 in the inertia ring 1.

The inner metal sheet 4 is provided with a limiting rod 45 and an elastic sheet 46, a limiting raised head 47 is arranged at the end of the limiting rod 45, a positioning sheet 48 is arranged at the end of the elastic sheet 46, the rubber main spring 3 is provided with a limiting groove 31, the limiting raised head 47 is embedded into the limiting groove 31, the inertia ring 1 is provided with a positioning hole 12, and the positioning sheet 48 is embedded into the positioning hole 12.

The inner metal sheet 4 and the rubber main spring 3 are quickly assembled and have an interlocking anti-falling structure by embedding the limiting raised head 47 into the limiting groove 31; the inner metal sheet 4 and the inertia ring 1 are quickly assembled and have an interlocking anti-falling structure by embedding the positioning sheet 48 into the positioning hole 12; and further strengthen interlocking anticreep effect through spacing pin 5.

The rubber main spring 3 is provided with arc transition, and the arc transition is used for eliminating or relieving the contraction stress of the rubber main spring 3.

The plastic sheet 2 is provided with a reinforcing rib, and the plastic sheet 2 has self-lubricating property and wear resistance.

Inner metal 4 includes bottom plate 41, first arch 42, first arch 41 sets up bottom plate 41 edge, first arch 42 side is provided with second arch 43, the lateral wall position of second arch 43 all is equipped with first through-hole 44.

Be provided with second through-hole 21 on the plastic film 2, be provided with third through-hole 11 on the 1 lateral wall of inertia ring, stop pin 5 passes on the inner metal piece 4 first through-hole 44, rubber main spring 3 on the plastic sheet 2 second through-hole 21 on the 1 lateral wall of inertia ring third through-hole 11 will in proper order inner metal piece 4 rubber main spring 3 plastic sheet 2 fixes in the inertia ring 1.

The limiting pin 5 is pressed into the inertia ring 1 through a special tool, in order to control the pressing gap and the pulling-out force, one end of the limiting pin 5 is installed in the third through hole 11 in the side wall of the inertia ring 1 through press riveting, in order to enable the limiting pin 5 to play a role in limiting the hardness in the torsion direction, and the other end of the limiting pin 5 is vulcanized with wear-resistant rubber.

And the end face of one end of the limiting pin 5, which is processed by riveting, is set to be non-circular.

The number of the second protrusions 43 is 4, the number of the plastic sheets 2 is 4, the number of the limiting pins 5 is 4, the number of the third through holes 11 is 4, and the third through holes 11 are uniformly distributed on the side wall of the inertia ring 1.

The plastic sheet is vulcanized between the rubber main spring 3 and the inertia ring 1, and the radial gap between the plastic sheet 2 and the inertia ring 1 is controlled between 0 mm and 0.1 mm.

The inner metal piece 4 is made of an iron material.

The novel torsional damper not only enriches the types of the product structures of the torsional damper, but also fills the blank that the domestic torsional damper not only meets the requirements of performance, but also can be a reliable product.

The utility model discloses a novel torsional damper, which comprises the following components in part by weight:

1. and the frequency of the transmission system and the load under various working conditions are obtained through the test of the performance of the whole vehicle. Theoretical analysis and CAE simulation of the force applied to the product and the deformation allowed by the fixed frequency performance of the product in the use working condition;

2. through increasing plastic sheet 2, reduce radial effectual rubber to improve the radial and beat rigidity of product, in order to guarantee its reliability, simultaneously, control the clearance between plastic sheet 2 and inertia ring 1 through special mould, guarantee the frequency of twisting direction.

3. The reinforcing ribs of the plastic sheet 2 are realized by a special plastic mold, and the self-lubricating property and the wear resistance are ensured by the selected material.

4. The rubber shape and size of the pin are ensured through a special die of the limiting pin 5, so that the pin has the functions of soft limiting and hard limiting.

5. The limiting pin 5 is fixed with the inertia ring 1 through a special pressing-in and pressing-riveting tool, and meanwhile, the anti-falling function is achieved due to the fact that high pulling-out force is achieved, and the safety factor of the product is increased.

6. The arc transition structure of the rubber main spring 3 is also ensured by a special rubber vulcanization mould.

The utility model discloses a novel torsional damper, which solves the following technical problems:

1. after loading, the torsion of a transmission system is well eliminated or restrained, and the vibration and the noise in the vehicle are greatly reduced;

2. through strict radial limiting, the high-speed dynamic balance of the product is well controlled, and the vibration of the vehicle at high speed can not be amplified;

3. the product can be limited by twisting soft and hard by riveting a limit pin 5, and the anti-falling effect can be achieved;

4. when the tight radial limiting is ensured, the frequency in the twisting direction can have a wider adjusting range; 5. through the structure and material design, the damping ratio of the product can be greatly improved.

The utility model has the beneficial effects that: 1. after the torsional damper is used for loading, the resonance effect can be well eliminated and inhibited, and the vibration and noise in the vehicle are greatly reduced; 2. the reliability of the product is ensured, and the product passes the road test requirement of the automobile industry; 3. its interlocking anti-disengaging structure more increases factor of safety.

The foregoing is a more detailed description of the utility model in connection with specific preferred embodiments and it is not intended that the utility model be limited to these specific details. For those skilled in the art to which the utility model pertains, several simple deductions or substitutions can be made without departing from the spirit of the utility model, and all shall be considered as belonging to the protection scope of the utility model.

Claims

1. A torsional vibration damper characterized in that: including inertia ring, plastic sheet, rubber owner spring, interior metal part, install in the inertia ring interior metal part rubber owner spring the plastic sheet, rubber owner spring is located the inertia ring with between the interior metal part, the plastic sheet is located rubber owner spring with between the inertia ring, interior metal part is equipped with gag lever post and shell fragment, the gag lever post tip is equipped with spacing plush copper, the shell fragment tip is equipped with the spacer, rubber owner spring is equipped with the spacing groove, spacing plush copper embedding the spacing inslot, the inertia ring is equipped with the locating hole, the spacer embedding in the locating hole.

2. The torsional vibration damper of claim 1, wherein: the torsional damper further comprises a limiting pin, and the inner metal piece, the rubber main spring and the plastic sheet are sequentially arranged in the inertia ring through the limiting pin.

3. The torsional vibration damper of claim 1, wherein: the rubber main spring is provided with an arc transition which is used for eliminating or relieving the shrinkage stress of the rubber main spring; and reinforcing ribs are arranged on the plastic sheets.

4. The torsional vibration damper of claim 2, wherein: the inner metal piece comprises a bottom plate and a first protrusion, the first protrusion is arranged on the edge of the bottom plate, the second protrusion is arranged on the side face of the first protrusion, and a first through hole is formed in the side wall of the second protrusion.

5. The torsional vibration damper of claim 4, wherein: the plastic sheet is provided with a second through hole, the side wall of the inertia ring is provided with a third through hole, and the limiting pin penetrates through the first through hole in the inner metal piece, the rubber main spring, the second through hole in the plastic sheet and the third through hole in the side wall of the inertia ring, so that the inner metal piece, the rubber main spring and the plastic sheet are fixed in the inertia ring in sequence.

6. The torsional vibration damper of claim 5, wherein: one end of the limiting pin is installed in the third through hole in the side wall of the inertia ring through pressure riveting, and the other end of the limiting pin is vulcanized wear-resistant rubber.

7. The torsional vibration damper of claim 6, wherein: the end face of one end of the limiting pin, which is processed through pressure riveting, is set to be non-circular.

8. The torsional vibration damper of claim 5, wherein: the number of the second bulges is 4, the number of the plastic sheets is 4, the number of the limiting pins is 4, the number of the third through holes is 4, and the number of the third through holes is four, and the third through holes are uniformly distributed on the side wall of the inertia ring.

9. The torsional vibration damper of claim 1, wherein: and the plastic sheet is vulcanized between the rubber main spring and the inertia ring.

10. The torsional vibration damper of claim 1, wherein: the inner metal piece is made of iron material.