Dual-mass flywheel

Abstract

The utility model relates to the technical field of dual-mass flywheels, and discloses a dual-mass flywheel which comprises a first-stage flywheel, a second-stage flywheel is installed in the first-stage flywheel in a matched mode, a cover plate is installed at one end of the first-stage flywheel in a matched mode, and two containing cavities are formed in one end of the first-stage flywheel and are symmetrically distributed. Arc-shaped springs are installed in the two containing cavities in a matched mode, a bearing seat is arranged at one end of the first-stage flywheel, and a bearing is arranged on the outer surface of the bearing seat. By means of the cavity formed in the outer ring and the fins arranged in the cavity, heat generated in the rotating process of the bearing can be absorbed and guided, so that the temperature of the bearing is prevented from being too high, the service life of the bearing and the service life of the dual-mass flywheel are prolonged, and the good practical effect is achieved; the long spring is compressed firstly, and then the short spring is compressed when the long spring is compressed to a certain angle, so that the secondary damping effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of dual-mass flywheels, in particular to a dual-mass flywheel. Background Art

[0002] Dual-mass flywheels are commonly used as vibration dampers during vehicle power transmission, reducing torsional vibrations at the engine output shaft and improving vehicle noise, noise, and harshness (NVH). They are typically installed between the engine and transmission. One of the flywheels is fixedly connected to the engine's output shaft, driving its rotation. The other flywheel is attached to the transmission's input shaft, transmitting power to the transmission.

[0003] The utility model patent application document with publication number "CN211525429U" discloses a dual-mass flywheel, which is mainly composed of a primary flywheel, a secondary flywheel, an elastic member and a bearing. This technical solution can provide multi-stage vibration reduction.

[0004] The dual-mass flywheel disclosed in the above document has the following defects: the bearings in the dual-mass flywheel will generate a large amount of heat during long-term use. If this heat cannot be evaporated in time, it will affect the service life and use effect of the bearings and the dual-mass flywheel, and its practicality is poor.

[0005] It can be seen from this that the bearings of the existing dual-mass flywheel cannot discharge the heat generated during use in a timely manner. It is necessary to improve the existing shortcomings and provide a dual-mass flywheel. Utility Model Content

[0006] The purpose of the present invention is to provide a dual-mass flywheel to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0008] The utility model is a dual-mass flywheel, comprising a first-stage flywheel, a second-stage flywheel being fitted inside the first-stage flywheel, a cover being fitted at one end of the first-stage flywheel, an accommodating cavity being provided at one end of the first-stage flywheel, two accommodating cavities being arranged and symmetrically distributed, arc springs being fitted inside the two accommodating cavities, a bearing seat being provided at one end of the first-stage flywheel, and a bearing being provided on the outer surface of the bearing seat.

[0009] Furthermore, the bearing includes an outer ring, an inner ring is arranged inside the outer ring, the outer ring and the inner ring cooperate to form a ball groove, a limit ring is installed inside the ball groove, a plurality of mounting holes are opened on the outer surface of the limit ring, balls are installed inside the mounting holes, and a bearing seat is installed inside the inner ring.

[0010] Furthermore, a cavity is provided inside the outer ring, and a plurality of vents are provided on the outer surface of the outer ring, with one end of the vent extending into the interior of the cavity.

[0011] Furthermore, the inner surface of the cavity is provided with a plurality of fins.

[0012] Furthermore, a mounting groove is provided on the outer surface of the bearing seat, and a clamp is installed in the interior of the mounting groove.

[0013] Furthermore, the outer surfaces of the first-stage flywheel and the second-stage flywheel are coated with a high-temperature resistant coating.

[0014] The utility model has the following beneficial effects:

[0015] (1) The utility model can absorb and guide the heat generated during the rotation of the bearing through the cavity opened in the outer ring and the fins arranged in the cavity, thereby avoiding excessive temperature of the bearing, extending the service life of the bearing and the dual-mass flywheel, and achieving better practical effects.

[0016] (2) The utility model compresses the arc spring. When the arc spring is compressed, the long spring is compressed first. When it is compressed to a certain angle, the short spring is compressed again, thereby achieving a two-stage shock absorption effect.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is an exploded view of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the first-stage flywheel, the second-stage flywheel and the arc spring of the utility model;

[0021] Figure 3 This is a schematic diagram of the bearing structure of the utility model;

[0022] Figure 4 This is a cross-sectional view of the bearing structure of the utility model;

[0023] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0024] In the figure: 1. First-stage flywheel; 101. Bearing seat; 2. Second-stage flywheel; 3. Cover plate; 4. Arc spring; 5. Bearing; 501. Outer ring; 502. Inner ring; 503. Ball groove; 504. Limit ring; 505. Ball; 506. Cavity; 507. Vent; 508. Fin; 6. Clamp. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1 - Figure 4 As shown, the utility model is a dual-mass flywheel, comprising a first-stage flywheel 1, a second-stage flywheel 2 being mounted inside the first-stage flywheel 1, a cover plate 3 being mounted on one end of the first-stage flywheel 1, an accommodating cavity being formed at one end of the first-stage flywheel 1, two accommodating cavities being provided and symmetrically distributed, an arc spring 4 being mounted inside each of the two accommodating cavities, a bearing seat 101 being provided at one end of the first-stage flywheel 1, and a bearing 5 being provided on the outer surface of the bearing seat 101;

[0027] The outer surface of the bearing seat 101 is provided with a through opening;

[0028] The outer surface of the first-stage flywheel 1 is provided with a gear ring;

[0029] The arc spring 4 includes a long spring and a short spring, and the short spring is sleeved inside the long spring;

[0030] When in use, the first-stage flywheel 1 is connected to the output end of the engine, and the second-stage flywheel 2 is connected to the output shaft of the transmission. When the engine is started, the ring gear of the first-stage flywheel 1 is meshed with the starter gear, and the gear drives the first-stage flywheel 1 to rotate, and the arc spring 4 rotates along with the first-stage flywheel 1. The rotating arc spring 4 drives the cover plate 3 and the bearing 5 to rotate through the second-stage flywheel 2. When the arc spring 4 is compressed, it compresses the long spring first, and when it is compressed to a certain angle, it compresses the short spring, thereby achieving a secondary shock absorption effect;

[0031] The bearing 5 includes an outer ring 501, an inner ring 502 is disposed inside the outer ring 501, and the outer ring 501 and the inner ring 502 cooperate to form a ball groove 503. A limit ring 504 is mounted inside the ball groove 503. The limit ring 504 has a plurality of mounting holes on its outer surface, and balls 505 are mounted inside the mounting holes. The bearing seat 101 is mounted inside the inner ring 502.

[0032] A cavity 506 is formed inside the outer ring 501 , and a plurality of vents 507 are formed on the outer surface of the outer ring 501 , with one end of the vent 507 extending into the cavity 506 ;

[0033] The inner surface of the cavity 506 is provided with a plurality of fins 508;

[0034] The outer surface of the bearing seat 101 is provided with a through opening which is coaxial with the vent 507;

[0035] When the bearing 5 rotates for a long time, the heat generated by the retaining ring 504 and the ball 505 is transferred to the inner surface of the ball groove 503. A portion of the heat on the inner surface of the ball groove 503 is absorbed by the fins 508 in the cavity 506 for heat conduction. When the dual-mass flywheel rotates, the outside air enters the cavity 506 through the opening and the vent 507 to cool the fins 508.

[0036] The outer surface of the bearing seat 101 is provided with a mounting groove, and a clamp 6 is fitted inside the mounting groove;

[0037] The outer surfaces of the first-stage flywheel 1 and the second-stage flywheel 2 are both coated with a high-temperature resistant coating;

[0038] By coating the outer surfaces of the primary flywheel 1 and the secondary flywheel 2 with a high-temperature resistant coating, the high-temperature resistance of the primary flywheel 1 and the secondary flywheel 2 can be increased, thereby extending the service life of the primary flywheel 1 and the secondary flywheel 2.

[0039] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A dual-mass flywheel, comprising a first-stage flywheel (1), a second-stage flywheel (2) being mounted in cooperation with the inside of the first-stage flywheel (1), a cover plate (3) being mounted in cooperation with one end of the first-stage flywheel (1), a receiving cavity being provided at one end of the first-stage flywheel (1), the number of the receiving cavities being set to two and being symmetrically distributed, an arc spring (4) being mounted in cooperation with the inside of the two receiving cavities, and characterized in that: A bearing seat (101) is provided at one end of the first-stage flywheel (1), and a bearing (5) is provided on the outer surface of the bearing seat (101).

2. A dual mass flywheel according to claim 1, characterized in that: The bearing (5) comprises an outer ring (501), an inner ring (502) is provided inside the outer ring (501), the outer ring (501) and the inner ring (502) cooperate to form a ball groove (503), a limit ring (504) is installed inside the ball groove (503), a plurality of mounting holes are provided on the outer surface of the limit ring (504), and balls (505) are installed inside the mounting holes; A bearing seat (101) is fitted inside the inner ring (502).

3. A dual mass flywheel according to claim 2, characterized in that: A cavity (506) is provided inside the outer ring (501), and a plurality of vents (507) are provided on the outer surface of the outer ring (501), with one end of the vent (507) extending into the interior of the cavity (506).

4. A dual mass flywheel according to claim 3, characterized in that: The inner surface of the cavity (506) is provided with a plurality of fins (508).

5. The dual mass flywheel according to claim 1, characterized in that: An installation groove is provided on the outer surface of the bearing seat (101), and a clamp (6) is installed in the interior of the installation groove.

6. A dual mass flywheel according to claim 1, characterized in that: The outer surfaces of the first-stage flywheel (1) and the second-stage flywheel (2) are both coated with a high-temperature resistant coating.

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