Lightweight torsion damper

Abstract

The utility model relates to the technical field of new energy automobiles, and discloses a lightweight torsion damper which comprises a driven disc, an outer connecting groove is formed in the outer side of the upper end of the driven disc, a first connecting hole is formed in the lower end of the inner side of the outer connecting groove, a connecting ring is arranged on the inner side of the outer connecting groove, and a second connecting hole is formed in the lower end of the inner side of the connecting ring. A second connecting hole is formed in the inner side of the upper end of the connecting ring. According to the light-weight torsion damper, the hole positions of the flywheel connecting holes and the second connecting holes are rearranged, the connecting ring is designed to be in a step shape in a matched mode, manufacturing materials of the connecting ring are conveniently reduced, and therefore the weight of the connecting ring is reduced; the limiting teeth and the disc hub are limited to a certain degree through the tooth grooves, so that the rotating angle of the disc hub is further adjusted, a spring structure on the driven disc is protected, and the situation that the spring is broken is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicles, and particularly relates to a lightweight torsional damper. Background Technique

[0002] New energy vehicles refer to vehicles that use unconventional vehicle fuels as power sources (or use conventional vehicle fuels and adopt new in-vehicle power devices), integrating advanced technologies in vehicle power control and drive. They form vehicles with advanced technical principles, new technologies, and new structures. In hybrid new energy vehicles, a torsional vibration damping structure is usually provided between the engine and the motor.

[0003] For example, in the patent No. CN203685978U, the utility model discloses a torsional damper, which includes a mass block, a connecting flange, and a natural frequency rubber block arranged along the outer circumference of the connecting flange between the mass block and the connecting flange. The connecting flange is coaxially arranged inside the mass block, and an axial limiting device, a radial limiting device, and a torsional limiting device are arranged between the connecting flange and the mass block. The number of the axial limiting device, the radial limiting device, and the torsional limiting device is at least one. The torsional damper of the utility model has a simple structure. On the premise of meeting the working performance of automotive parts, it can prevent parts from exceeding the working range of loads during the whole vehicle road test, improve the torsional fluctuation of the transmission shaft, extend the overall service life of the components, and reduce the vehicle maintenance cost.

[0004] Most of the existing torsional dampers have heavy components such as connecting rings, which are difficult to handle during assembly and loading, time-consuming and laborious. At the same time, there is no restriction between the driven disk and the disk hub of most torsional dampers, and they can rotate at any angle, resulting in a risk of spring breakage. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a lightweight torsional damper to solve the problems in the above background technique, that is, most of the existing torsional dampers have heavy components such as connecting rings, which are difficult to handle during assembly and loading, time-consuming and laborious. At the same time, there is no restriction between the driven disk and the disk hub of most torsional dampers, and they can rotate at any angle, resulting in a risk of spring breakage.

[0006] To achieve the above object, the utility model is realized by the following technical solutions: A lightweight torsional damper, including a driven disc, an outer connection groove is provided on the outer side of the upper end of the driven disc, a first connection hole is provided at the lower end inside the outer connection groove, a connection ring is arranged inside the outer connection groove, a second connection hole is provided at the upper end inside the connection ring, an inner connection groove is provided on the inner side of the upper end of the driven disc, a third connection hole is provided at the lower end inside the inner connection groove, a tooth groove is provided on the side of the inner connection groove at the upper end of the driven disc, a hub is arranged inside the inner connection groove, a fourth connection hole is provided at the upper end of the hub, and a limiting tooth is fixedly installed on the outer surface of the hub.

[0007] Preferably, a spring is arranged on the driven disc, and the outer connection groove is in snap connection with the connection ring.

[0008] Preferably, the second connection hole and the first connection hole are connected by a bolt, and the cross section of the connection ring is designed in a stepped structure.

[0009] Preferably, the third connection holes are distributed in an annular array, and the tooth grooves are distributed in an annular array.

[0010] Preferably, the fourth connection holes are distributed in an annular array, and the third connection hole and the fourth connection hole are connected by a bolt.

[0011] Preferably, the hub is in snap connection with the inner connection groove, and the limiting tooth is mutually adapted to the tooth groove.

[0012] Preferably, a flywheel connection hole is provided on the outer side of the upper end of the connection ring, and a connection tooth opening is arranged on the inner surface of the hub.

[0013] The utility model provides a lightweight torsional damper. Compared with the prior art, it has the following beneficial effects:

[0014] For this lightweight torsional damper, the flywheel drives the connection ring to rotate, and the torque is transmitted to the motor through the hub, thereby completing the damping transmission work of the torsional damper. By rearranging the hole positions of the flywheel connection hole and the second connection hole, and cooperating with the stepped design of the connection ring, it is convenient to reduce the material used for manufacturing the connection ring, thereby reducing the weight of the connection ring. By providing a tooth groove and a limiting tooth on the connection structure between the hub and the driven disc, the tooth groove forms a certain restriction on the limiting tooth and the hub, thereby further limiting the rotation angle of the hub, which is beneficial to protecting the spring structure on the driven disc and avoiding the situation of spring breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structure schematic diagram of the utility model;

[0016] Figure 2 is a structure schematic diagram of the connection ring of the utility model;

[0017] Figure 3 Schematic diagram of the driven disc structure of the present utility model;

[0018] Figure 4 Schematic diagram of the disc hub structure of the present utility model.

[0019] In the figure: 1, driven disc; 2, outer connection groove; 3, first connection hole; 4, connection ring; 5, second connection hole; 6, inner connection groove; 7, third connection hole; 8, tooth groove; 9, disc hub; 10, fourth connection hole; 11, limiting tooth; 12, flywheel connection hole; 13, connection tooth mouth. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4 , the present utility model provides a technical solution: a lightweight torsional damper, including a driven disc 1, an outer connection groove 2 is opened on the outer side of the upper end of the driven disc 1, a first connection hole 3 is opened at the lower end inside the outer connection groove 2, a connection ring 4 is arranged inside the outer connection groove 2, a second connection hole 5 is opened at the inner side of the upper end of the connection ring 4, a spring is arranged on the driven disc 1, the outer connection groove 2 is snap-connected with the connection ring 4, the second connection hole 5 and the first connection hole 3 are connected by bolts, the cross-section of the connection ring 4 is designed in a stepped structure. First, the connection ring 4 is fixed on the engine flywheel by bolts, and the connection tooth mouth of the disc hub 9 is connected with the spline, so that the flywheel drives the connection ring 4 to rotate, and the torque is transmitted to the motor through the disc hub 9, thereby completing the damping transmission work of the torsional damper. By rearranging the hole positions of the flywheel connection hole 12 and the second connection hole 5, and cooperating with the design of the connection ring 4 into a stepped shape, it is convenient to reduce the material used for manufacturing the connection ring 4, thereby reducing the weight of the connection ring 4;

[0022] An inner connection groove 6 is provided on the inner side of the upper end of the driven disk 1. A third connection hole 7 is provided at the lower end of the inner side of the inner connection groove 6. A tooth groove 8 is provided on the side of the upper end of the driven disk 1 located at the inner connection groove 6. A disk hub 9 is provided inside the inner connection groove 6. A fourth connection hole 10 is provided at the upper end of the disk hub 9. A limiting tooth 11 is fixedly installed on the outer surface of the disk hub 9. The third connection holes 7 are distributed in an annular array. The tooth grooves 8 are distributed in an annular array. The fourth connection holes 10 are distributed in an annular array. The third connection holes 7 and the fourth connection holes 10 are connected by bolts. The disk hub 9 is snap-fitted with the inner connection groove 6. The limiting tooth 11 is adapted to the tooth groove 8. An engine flywheel connection hole 12 is provided on the outer side of the upper end of the connection ring 4. A connection tooth opening 13 is provided on the inner surface of the disk hub 9. By providing the tooth groove 8 and the limiting tooth 11 on the connection structure between the disk hub 9 and the driven disk 1, the tooth groove 8 forms a certain restriction on the limiting tooth 11 and the disk hub 9, thereby further limiting the rotation angle of the disk hub 9, which is beneficial to protecting the spring structure on the driven disk 1 and avoiding the situation of spring breakage.

[0023] During operation, first, the connection ring 4 is fixed on the engine flywheel by bolts, and the connection tooth opening of the disk hub 9 is connected with the spline, so that the flywheel drives the connection ring 4 to rotate, and the torque is transmitted to the motor through the disk hub 9, thereby completing the vibration damping transmission work of the torsional vibration damper. By rearranging the hole positions of the engine flywheel connection hole 12 and the second connection hole 5, and cooperating with designing the connection ring 4 into a stepped shape, it is convenient to reduce the material used for manufacturing the connection ring 4, thereby reducing the weight of the connection ring 4. By providing the tooth groove 8 and the limiting tooth 11 on the connection structure between the disk hub 9 and the driven disk 1, the tooth groove 8 forms a certain restriction on the limiting tooth 11 and the disk hub 9, thereby further limiting the rotation angle of the disk hub 9.

[0024] At the same time, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

Claims

1. A lightweight torsional damper, comprising a driven plate (1), characterized in that: An outer connection groove (2) is provided on the outer side of the upper end of the driven disk (1). A first connection hole (3) is provided at the lower end inside the outer connection groove (2). A connection ring (4) is arranged inside the outer connection groove (2). A second connection hole (5) is provided at the upper end inside the connection ring (4). An inner connection groove (6) is provided on the inner side of the upper end of the driven disk (1). A third connection hole (7) is provided at the lower end inside the inner connection groove (6). A tooth groove (8) is provided on the side of the upper end of the driven disk (1) at the side of the inner connection groove (6). A disk hub (9) is arranged inside the inner connection groove (6). A fourth connection hole (10) is provided at the upper end of the disk hub (9). A limiting tooth (11) is fixedly installed on the outer surface of the disk hub (9).

2. The lightweight torsional damper according to claim 1, wherein: A spring is arranged on the driven disk (1), and the outer connection groove (2) is snap-fitted with the connection ring (4).

3. A lightweight torsional damper according to claim 2, characterized in that: The second connection hole (5) is connected to the first connection hole (3) by a bolt, and the cross-section of the connection ring (4) is designed in a stepped structure.

4. A lightweight torsional damper according to claim 1, characterized in that: The third connection holes (7) are distributed in an annular array, and the tooth grooves (8) are distributed in an annular array.

5. A lightweight torsional damper according to claim 4, characterized in that: The fourth connection holes (10) are distributed in an annular array, and the third connection holes (7) and the fourth connection holes (10) are connected by bolts.

6. A lightweight torsional damper according to claim 1, characterized in that: The disk hub (9) is snap-fitted with the inner connection groove (6), and the limiting tooth (11) is adapted to the tooth groove (8).

7. A lightweight torsional damper according to claim 6, characterized in that: A flywheel connection hole (12) is provided on the outer side of the upper end of the connection ring (4), and a connection tooth opening (13) is arranged on the inner surface of the disk hub (9).

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