Detachable dual-mass flywheel

Abstract

The utility model discloses a detachable dual mass flywheel, which relates to the technical field of automobile flywheels, and comprises a primary flywheel component and a secondary flywheel component, the primary flywheel component is connected with an engine and comprises a front shell, a rear shell, an arc spring, a thrust washer, a limit ring and a sealing ring, the secondary flywheel assembly is connected with a gearbox or a motor and comprises a force transmission plate, a lagging disc spring, rivets, a pressing ring, a friction plate assembly, a spline disc, a friction steel sheet, a torque limiting disc spring, a torque limiting cover plate and an elastic check ring, and the force transmission plate, the lagging disc spring, the pressing ring, the friction plate assembly and the torque limiting cover plate are riveted together through the rivets. The torsion limiting disc spring is located between the friction steel sheet and the torsion limiting cover plate, and the spline plate is detachably connected to the pressing ring through the spring check ring. According to the dual-mass flywheel, the spline plate is disassembled and assembled by arranging the elastic check ring in the torque limiting mechanism, and it is guaranteed that after the torque limiting mechanism works, the dual-mass flywheel can be disassembled from a whole vehicle conveniently.

Description

Technical Field

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

[0002] The so-called dual-mass flywheel is to divide the original flywheel into two parts: one part is retained on one side of the original engine and plays the role of the original flywheel, used to start and transmit the rotational torque of the engine, this part is called the primary flywheel assembly; the other part is set on the transmission or motor side of the transmission system, this part is called the secondary flywheel assembly. An annular oil cavity is formed between the primary flywheel assembly and the secondary flywheel assembly, and a torsional vibration damper is installed in the oil cavity. The torsional vibration damper connects the primary flywheel assembly and the secondary flywheel assembly as a whole. The dual-mass flywheel can effectively attenuate the torsional vibration of the power transmission system, reduce the low-order natural frequency of the automobile transmission system, improve the NVH characteristics of the whole vehicle, and extend the service life of various components in the automobile transmission system.

[0003] Obviously, the dual-mass flywheel plays a vital role in the vehicle's powertrain, but it will generate additional large impact torque under certain operating conditions, especially in hybrid systems.

[0004] The design purpose of this application is to facilitate the removal of the dual-mass flywheel from the vehicle when the torque limiting system takes effect. Utility Model Content

[0005] The purpose of the utility model is to provide a detachable dual-mass flywheel to solve the above-mentioned defects caused by the prior art.

[0006] A detachable dual-mass flywheel comprises a primary flywheel assembly and a secondary flywheel assembly, wherein the primary flywheel assembly is connected to an engine and comprises a front housing, a rear housing, an arc spring, a thrust washer, a limit ring and a sealing ring, and the secondary flywheel assembly is connected to a gearbox or a motor and comprises a force transmission plate, a hysteresis disc spring, a rivet, a pressure ring, a friction plate assembly, a spline keypad, a friction steel plate, a torsion-limiting disc spring, a torsion-limiting cover plate and an elastic retaining ring, wherein the force transmission plate, the hysteresis disc spring, the pressure ring, the friction plate assembly and the torsion-limiting cover plate are riveted together by rivets, the torsion-limiting disc spring is located between the friction steel plate and the torsion-limiting cover plate, and the spline keypad is detachably connected to the pressure ring by a spring retaining ring.

[0007] Preferably, the spring retaining ring is an open elastic retaining ring with an opening or a spiral elastic retaining ring with a driving notch.

[0008] Preferably, the pressure ring is provided with an open groove matching with the open elastic retaining ring or the spiral elastic retaining ring, and the open elastic retaining ring or the spiral elastic retaining ring is installed in the open groove.

[0009] Preferably, the open elastic retaining ring or the spiral elastic retaining ring is made of elastic material.

[0010] Preferably, the friction plate assembly is provided with internal teeth, the spline is provided with external teeth, and the internal teeth and the external teeth are meshed with each other.

[0011] Preferably, the friction plate assembly includes friction plate one and friction plate two.

[0012] Preferably, the spline key is an internal spline or an external spline.

[0013] Preferably, a plurality of first through holes are provided at intervals on the front shell body, and a plurality of second through holes are provided at intervals on the flower keypad.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] In this type of dual-mass flywheel, after the primary flywheel assembly receives the torque of the engine, it is transmitted to the force transmission plate of the secondary flywheel assembly through the arc spring, and finally transmitted to the gearbox or motor through the spline keypad. When subjected to a large impact torque, the spline keypad will slide relative to the pressure ring and friction steel plate assembly to release the excess torque. At the same time, the spline keypad is disassembled and assembled by setting an elastic retaining ring in the torque limiting mechanism, ensuring that the dual-mass flywheel can be easily removed from the vehicle after the torque limiting mechanism takes effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the dual-mass flywheel assembly of the utility model.

[0017] Figure 2 It is a structural schematic diagram of the secondary flywheel assembly in the utility model.

[0018] Figure 3 and Figure 4 It is a schematic diagram of the structure of different types of elastic retaining rings in the utility model.

[0019] Figure 5 and Figure 6 It is a schematic diagram of the structure of different types of flower keyboards in the utility model.

[0020] Figure 7 and Figure 8 It is a schematic diagram of the structure of different types of pressure rings in the utility model.

[0021] Fig. 9 It is a structural schematic diagram of the friction plate assembly in the utility model.

[0022] Fig.10 It is a structural schematic diagram of the friction plate assembly and the spline keyboard in the utility model.

[0023] Fig.11 It is a structural schematic diagram of the friction steel sheet in the utility model.

[0024] in:

[0025] 1-front housing; 2-rear housing; 3-arc spring; 4-thrust washer; 5-limiting ring; 6-sealing ring; 7-force transmission plate; 8-hysteresis disc spring; 9-rivet; 10-pressure ring; 11-friction plate assembly; 12-flower keypad; 13-friction steel plate; 14-torsion limiting disc spring; 15-torsion limiting cover plate; 16-open elastic retaining ring; 17-through hole one; 18-external teeth; 19-friction plate one; 20-friction plate two; 21-opening; 22-internal teeth; 23-spiral elastic retaining ring; 24-opening groove; 25-notch; 26-through hole two. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0027] like Figures 1 to 11 As shown, a detachable dual-mass flywheel includes a primary flywheel assembly and a secondary flywheel assembly, wherein the primary flywheel assembly is connected to the engine and includes a front housing 1, a rear housing 2, an arc spring 3, a thrust washer 4, a limit ring 5 and a sealing ring 6, and the secondary flywheel assembly is connected to the gearbox or the motor and includes a force transmission plate 7, a hysteresis disc spring 8, a rivet 9, a pressure ring 10, a friction plate assembly 11, a spline 12, a friction steel plate 13, a torsion-limiting disc spring 14, a torsion-limiting cover plate 15 and an elastic retaining ring, wherein the force transmission plate 7, the hysteresis disc spring 8, the pressure ring 10, the friction plate assembly 11 and the torsion-limiting cover plate 15 are riveted together by the rivet 9, the torsion-limiting disc spring 14 is located between the friction steel plate 13 and the torsion-limiting cover plate 15, and the spline 12 is detachably connected to the pressure ring 10 by a spring retaining ring. The torsion limiting disc spring 14 generates sufficient axial force and compresses the spline 12, and at the same time, the spline 12 can be twisted relative to the pressure ring 10 and the friction steel sheet 13. The torsion limiting disc spring 14 and the torsion limiting cover plate 15 form a torsion limiting mechanism and are integrated into the secondary flywheel assembly.

[0028] In this embodiment, the spring retaining ring is selected from an open elastic retaining ring 16 with an opening 21 or a spiral elastic retaining ring 23 with a notch 25. The device can be installed according to actual use, and the diameter can be adjusted according to demand. Among them, the opening 21 of the open elastic retaining ring 16 can be reduced to remove the open spring retaining ring 16, and then remove the spline 12, or the notch 25 of the spiral elastic retaining ring 23 can be pushed outward to remove the spiral elastic retaining ring 23, and then remove the spline 12.

[0029] In this embodiment, the pressure ring 10 is provided with an open groove 24 matching the open elastic circlip 16 or the spiral elastic circlip 23 , and the open elastic circlip 16 or the spiral elastic circlip 23 is installed in the open groove 24 .

[0030] In this embodiment, the open elastic circlip 16 or the spiral elastic circlip 23 is made of elastic material.

[0031] In this embodiment, the friction plate assembly 11 is provided with inner teeth 22, the spline 12 is provided with outer teeth 18, and the inner teeth 22 mesh with the outer teeth 18. The axial clearance and radial clearance between the inner teeth 22 and the outer teeth 18 can be set according to actual conditions.

[0032] In this embodiment, the friction plate assembly 11 includes a friction plate 19 and a friction plate 20 .

[0033] In this embodiment, the spline 12 is an internal spline or an external spline.

[0034] In this embodiment, a plurality of first through holes 17 are provided at intervals on the front housing 1 , and a plurality of second through holes 26 are provided at intervals on the flower keypad 12 .

[0035] The working principle of this removable dual-mass flywheel:

[0036] In the dual-mass flywheel of this structure, after the primary flywheel assembly bears the torque of the engine, it is transmitted to the force transmission plate 7 of the secondary flywheel assembly through the arc spring 3, and finally transmitted to the gearbox or motor through the spline 12. When subjected to a large impact torque, the spline 12 will slide relative to the pressure ring 10 and the friction steel plate assembly 11, thereby releasing the excess torque. At the same time, the spline 12 is disassembled and assembled by setting an elastic retaining ring in the torque limiting mechanism, ensuring that the dual-mass flywheel can be easily removed from the vehicle after the torque limiting mechanism takes effect.

[0037] Therefore, the embodiments disclosed above are only illustrative in all aspects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A detachable dual-mass flywheel, characterized in that: The invention comprises a primary flywheel assembly and a secondary flywheel assembly. The primary flywheel assembly is connected to an engine and comprises a front housing (1), a rear housing (2), an arc spring (3), a thrust washer (4), a limit ring (5) and a sealing ring (6). The secondary flywheel assembly is connected to a gearbox or a motor and comprises a force transmission plate (7), a hysteresis disc spring (8), a rivet (9), a pressure ring (10), a friction plate assembly (11), a spline key (12), a friction steel plate (13), a torsion-limiting disc spring (14), a torsion-limiting cover plate (15) and an elastic retaining ring. The force transmission plate (7), the hysteresis disc spring (8), the pressure ring (10), the friction plate assembly (11) and the torsion-limiting cover plate (15) are riveted together by means of rivets (9). The torsion-limiting disc spring (14) is located between the friction steel plate (13) and the torsion-limiting cover plate (15). The spline key (12) is detachably connected to the pressure ring (10) by means of a spring retaining ring.

2. A detachable dual mass flywheel according to claim 1, characterized in that: The spring retaining ring is selected from an open elastic retaining ring (16) with an opening (21) or a spiral elastic retaining ring (23) with a driving notch (25).

3. A detachable dual mass flywheel according to claim 2, characterized in that: The pressure ring (10) is provided with an open groove (24) matching the open elastic circlip (16) or the spiral elastic circlip (23), and the open elastic circlip (16) or the spiral elastic circlip (23) is installed in the open groove (24).

4. A detachable dual mass flywheel according to claim 2, characterized in that: The open elastic retaining ring (16) or the spiral elastic retaining ring (23) is made of elastic material.

5. A detachable dual mass flywheel according to claim 1, characterized in that: The friction plate assembly (11) is provided with internal teeth (22), the spline (12) is provided with external teeth (18), and the internal teeth (22) and the external teeth (18) are meshed with each other.

6. A detachable dual mass flywheel according to claim 5, characterized in that: The friction plate assembly (11) comprises a friction plate 1 (19) and a friction plate 2 (20).

7. A detachable dual mass flywheel according to claim 5, characterized in that: The spline key (12) is an internal spline or an external spline.

8. A detachable dual mass flywheel according to claim 1, characterized in that: A plurality of first through holes (17) are arranged at intervals on the front housing (1), and a plurality of second through holes (26) are arranged at intervals on the flower keypad (12).

Images