CN211525429U

CN211525429U - Dual-mass flywheel

Info

Publication number: CN211525429U
Application number: CN201922500853.2U
Authority: CN
Inventors: 谈冠华; 周碧海; 蔡伟翔; 张波
Original assignee: Hubei Sanhuan Clutch Co Ltd
Current assignee: Hubei Sanhuan Clutch Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-18
Anticipated expiration: 2029-12-31

Abstract

The utility model relates to the technical field of clutch flywheels, and discloses a dual-mass flywheel, which comprises a primary flywheel, a secondary flywheel and at least one elastic part, wherein one end of the primary flywheel is provided with at least one accommodating cavity; the secondary flywheel and the primary flywheel are coaxially arranged; the elastic component sets up with holding the chamber one-to-one, and each elastic component includes the arc spring that two at least rigidity are different, and two at least arc springs place in proper order along the circumference of one-level flywheel and hold the chamber, and the circumference one end and the one-level flywheel relatively fixed of the arc spring of first position, and the circumference one end and the second grade flywheel relatively fixed of the arc spring of end position keep away from the arc spring of first position. The utility model discloses can provide multistage damping.

Description

Dual-mass flywheel

Technical Field

The utility model relates to a clutch flywheel technical field, concretely relates to dual mass flywheel.

Background

Conventional dual mass flywheel, the arc spring is long arc spring (as figure 1), the angle is generally 155 to 162, in order to realize the second grade damping, generally can set into short arc spring (as figure 2) in long arc spring, the angle is generally about 120, the arc spring is when compressing like this, compress long arc spring earlier, when compressing to certain angle, recompress short arc spring, just so realized the second grade damping, this kind of structural shortcoming is because space constraint, can't place shorter arc spring in to short arc spring, can only realize the second grade damping at most, can't provide the damping more than the second grade.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned technique not enough, provide a dual mass flywheel, solve the technical problem that can't provide the damping more than the second grade among the prior art.

In order to achieve the above technical purpose, the technical solution of the utility model provides a dual mass flywheel, a serial communication port, include:

the flywheel comprises a primary flywheel and a secondary flywheel, wherein one end of the primary flywheel is provided with at least one accommodating cavity;

the secondary flywheel and the primary flywheel are coaxially arranged;

at least one elastic component, the elastic component with hold the chamber one-to-one setting, each the elastic component includes the arc spring that two at least rigidity are different, at least two the arc spring is followed place in proper order in the circumference of one-level flywheel hold the chamber, the first the circumference one end of arc spring with one-level flywheel relatively fixed, the last the arc spring is kept away from the first the circumference one end of arc spring with the second grade flywheel relatively fixed.

Compared with the prior art, the beneficial effects of the utility model include: the utility model discloses a circumference along one-level flywheel sets up two at least arc springs, can reach the requirement of multistage damping, and the quantity of arc spring can set up as required.

Drawings

FIG. 1 is a schematic diagram of a prior art long arcuate spring;

FIG. 2 is a schematic diagram of a short arcuate spring of the prior art;

fig. 3 is a three-dimensional schematic view of the present invention;

fig. 4 is a schematic structural diagram of the present invention;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

FIG. 6 is a three-dimensional schematic view of a primary flywheel, a flange, a protrusion, an elastic member, a bearing seat, and a gear ring;

FIG. 7 is an enlarged partial schematic view at B of FIG. 6;

FIG. 8 is an enlarged partial schematic view at C of FIG. 6;

FIG. 9 is a three-dimensional schematic view of a primary flywheel, a gear ring, a bearing seat, an elastic member, and a stopper of the present invention;

FIG. 10 is a three-dimensional schematic view of a primary flywheel of the present invention;

FIG. 11 is a three-dimensional schematic view of another perspective of the primary flywheel of the present invention;

FIG. 12 is a three-dimensional schematic view of a flywheel body according to the present invention;

fig. 13 is a three-dimensional schematic view of the middle cover plate and the limiting block of the present invention;

FIG. 14 is a graph of the torsional characteristics of a prior art dual mass flywheel;

fig. 15 is a graph of the torsional characteristics of the dual mass flywheel of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The utility model provides a dual mass flywheel, as shown in fig. 1 to 15, including one-level flywheel 1, second grade flywheel 2, at least one elastic component 3, the one end of one-level flywheel 1 is equipped with at least one and holds the chamber.

Specifically, the one end of one-level flywheel 1 is equipped with at least one annular chamber, the annular chamber sets up with one-level flywheel 1 is coaxial, dual mass flywheel still includes two at least dogs 4, places in dog 4 is even along the circumference of one-level flywheel 1 the annular chamber, and will the annular chamber is separated into two at least hold the chamber.

Preferably, the stop 4 is formed by the outward protrusion of the inner wall of the annular cavity.

The number of the stop blocks 4 can be two, three, four, etc., preferably, the number of the stop blocks 4 is two, and the two stop blocks 4 are symmetrically distributed along the axis of the primary flywheel 1.

The secondary flywheel 2 and the primary flywheel 1 are coaxially arranged and are arranged at one end of the primary flywheel 1.

Elastic component 3 with hold the setting of chamber one-to-one, each elastic component 3 includes two at least arc spring 31 that the rigidity is different, and two at least arc spring 31 place in proper order along the circumference of one-level flywheel 1 hold the chamber, the circumference one end and the one-level flywheel 1 relatively fixed of the arc spring 31 of first position, and the circumference one end and the second grade flywheel 2 relatively fixed of the arc spring 31 of first position are kept away from to the arc spring 31 of last position.

The number of the elastic members 3 may be two, three, four, etc., and the number of the arc springs 31 in each elastic member 3 may be two, three, four, five, six, preferably, the number of the elastic members 3 is two, and each elastic member 3 includes three arc springs 31.

Further preferably, the stiffness of the arc springs 3 in the same accommodating cavity is different.

The three arc springs 31 gradually increase in rigidity in the circumferential direction of the primary flywheel 1.

Specifically, one circumferential end of the first arc spring 31 abuts against the corresponding stopper 4.

Specifically, adjacent arc springs 31 in the same accommodating cavity abut against or are connected with each other.

Preferably, both ends of the arc springs 31 are provided with planes through which the adjacent arc springs 31 are connected.

Specifically, the secondary flywheel 2 comprises a flywheel body 21, a flange plate 22 and at least one protruding part 23, the flywheel body 21 and the primary flywheel 1 are coaxially arranged and are arranged at one end of the primary flywheel 1, and the flange plate 22 is coaxially arranged between the flywheel body 21 and the primary flywheel 1 and is connected to the flywheel body 21; the convex parts 23 are arranged corresponding to the elastic parts 3 one by one, and one end of each convex part 23 is connected with the flange plate 22; one end of the last arc-shaped spring 31, which is far away from the first arc-shaped spring 31 in the circumferential direction, abuts against the convex part 23.

Specifically, a first fixing hole is coaxially formed in the flywheel body 21, the dual mass flywheel further comprises a bearing seat 5 and a bearing 6, the bearing seat 5 is coaxially connected to the primary flywheel 1, the bearing 6 is sleeved on the bearing seat 5, and an inner ring of the bearing 6 is connected to the inner wall of the first fixing hole of the flywheel body 21 and an outer ring of the bearing 6 is coaxially connected to the bearing seat 5.

Preferably, the bearing seat 5 is riveted with the primary flywheel 1 through a rivet.

A first-level flywheel 1 and a bearing seat 5 in a conventional dual-mass flywheel are integrally punched, a small bearing 6 structure is adopted, the first-level flywheel 1 is connected with a crankshaft through bolts, a second-level flywheel 2 is a casting part, a spiral abdicating hole is formed in the second-level flywheel 2, a middle hole in the second-level flywheel 2 is in interference fit with an outer ring of the bearing 6, when the dual-mass flywheel on the same platform is different in position of an engine crankshaft mounting hole, a casting mold of the second-level flywheel 2 needs to be re-developed, the period is long, and the cost is high. Is not beneficial to the timeliness of new product development.

This patent, adjusts the structure of dual mass flywheel: firstly, the primary flywheel 1 is separated from the bearing seat 5, and the primary flywheel 1 is only used as a connecting support piece and is not connected with the bearing 6, so that the structure and the function are simplified. Secondly, the bearing seat 5 adopts a punch forming process, and a punching die of the bearing seat 5 is adjusted according to the difference of flywheel mounting hole sites on the crankshaft of the engine, so that the method is convenient and rapid. And the third-stage flywheel 2 (shown in the twelve) cancels a flywheel bolt abdicating hole in the center, has a simplified structure, does not need to be adjusted according to the difference of flywheel mounting hole positions on the crankshaft of the engine, can be directly shared, and improves the platformization level of products.

Concretely, dual mass flywheel still includes cover 7, ring gear 8, and cover 7 sets up between ring flange 22 and flywheel body 21 and coaxial coupling in one-level flywheel 1, and cover 7 is formed with two at least stopper 9 along the direction protrusion that is close to one-level flywheel 1, and stopper 9 sets up with dog 4 one-to-one.

Preferably, the limiting block 9 is formed by protruding the cover disc 7 outwards.

The gear ring 8 is coaxial and fixedly sleeved on the primary flywheel 1.

The utility model discloses a concrete theory of operation: the primary flywheel 1 is connected to the crankshaft through a screw, when the engine is started, the gear ring 8 is meshed with a starter gear, the gear ring 8 drives the primary flywheel 1 to rotate, the elastic part 3 rotates along with the primary flywheel 1, the rotating elastic part 3 drives the flange plate 22 to rotate through the protruding part 23, the protruding part 23 compresses the spring, the long arc spring is divided into a plurality of short arc springs (figure six), the arc-shaped springs 31 can be arranged into a plurality of pieces according to the requirement of the damping characteristic, and the long arc-shaped springs are divided into three pieces by taking a double-mass flywheel structure with three-level damping characteristic as an example, according to the performance requirement of the dual-mass flywheel assembly, the diameter, the number of turns, the free angle and the like of the steel wire of each short arc-shaped spring are adjusted to ensure that the rigidity of each short arc-shaped spring is different, after the flywheel assembly is assembled, the damping characteristic of the flywheel assembly can realize the three-level damping characteristic (shown as fifteen), and the flange plate drives the second-level flywheel 2 to rotate.

The application of this patent can realize multistage damping with dual mass flywheel damping characteristic, to whole car different work condition, different gears match the design, satisfy NVH requirement under each operating mode of whole car.

The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A dual mass flywheel, comprising:

the secondary flywheel and the primary flywheel are coaxially arranged;

2. The dual mass flywheel of claim 1, wherein an annular cavity is disposed at one end of the primary flywheel, the annular cavity is disposed coaxially with the primary flywheel, and the dual mass flywheel further comprises at least two stoppers, the stoppers are disposed in the annular cavity uniformly along a circumferential direction of the primary flywheel and divide the annular cavity into at least two accommodating cavities.

3. A twin mass flywheel as defined in claim 2 in which one circumferential end of the arcuate spring in the leading position abuts the corresponding stop.

4. A twin mass flywheel as defined in claim 1 in which adjacent arcuate springs in the same containment chamber abut or are connected to each other.

5. A twin mass flywheel as defined in claim 1 in which the secondary flywheel is located at one end of the primary flywheel.

6. The dual mass flywheel of claim 5, wherein the secondary flywheel includes a flywheel body, a flange, and at least one protrusion, the flywheel body and the primary flywheel are coaxially disposed at one end of the primary flywheel, the flange is coaxially disposed between the flywheel body and the primary flywheel and connected to the flywheel body, the protrusions and the elastic member are disposed in one-to-one correspondence, and one end of each protrusion is connected to the flange; the circumferential end, away from the head position, of the arc-shaped spring at the last position abuts against the protruding part.