Dual-mass flywheel with introduced surface microtexture

Abstract

The utility model relates to the field of shock absorption of an automobile transmission system, in particular to a dual-mass flywheel with introduced surface microtexture, which comprises a primary flywheel, a gear ring, a spring seat, an arc-shaped spring, a force transmission disc, a pressing plate and a secondary flywheel, the contact surface of the primary flywheel and the spring seat is provided with the microtexture, and the surface of the primary flywheel is provided with the arc-shaped spring. Microtextures with different characteristics are added on a contact interface between a primary flywheel and a spring seat, a contact interface between the spring seat and the primary flywheel, or contact interfaces on two sides of the primary flywheel and the spring seat, so that the friction coefficient of the contact interfaces of parts in the dual-mass flywheel is changed, and the nonlinear characteristic of the variable-damping dual-mass flywheel is realized; by introducing the microtexture or different microtexture feature combinations, the previous friction coefficient of the dual-mass flywheel part can be improved or the nonlinear characteristic of the dual-mass flywheel based on the variable friction coefficient can be realized.

Description

Technical Field

[0001] The utility model relates to the field of automobile transmission system shock absorption, in particular to a dual-mass flywheel with surface micro-texture introduced. Background Art

[0002] A flywheel is a wheel-shaped energy accumulator with a large moment of inertia installed on the rotating shaft of a machine. When the speed of the machine increases, the kinetic energy of the flywheel increases, storing the energy; when the speed of the machine decreases, the kinetic energy of the flywheel decreases, releasing the energy. Flywheels can be used to reduce speed fluctuations during the operation of a machine.

[0003] The dual-mass flywheel divides the original flywheel into two parts. One part is retained on the original side of the engine and plays the role of the original flywheel for starting and transmitting the engine's rotational torque. This part is called the first mass (primary mass). The other part is placed on the transmission side of the transmission system to increase the transmission's rotational inertia. This part is called the second mass (secondary mass). There is an annular cavity between the two flywheel parts, and a spring damper is installed in the cavity. The spring damper connects the two flywheel parts into a whole.

[0004] At present, the nonlinear characteristics of the dual mass flywheel are mainly realized from the stiffness and moment of inertia. The friction between the components in the dual mass flywheel is mostly ignored or treated with equivalent linearity. In order to better improve the vibration reduction effect of the dual mass flywheel in the vehicle power transmission system, it is necessary to improve the existing dual mass flywheel. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a dual-mass flywheel with surface micro-texture.

[0006] The utility model provides a dual-mass flywheel with surface micro-texture, comprising: a primary flywheel, a gear ring, a spring seat, an arc spring, a force transmission disc, a pressure plate, and a secondary flywheel, wherein the contact surface between the primary flywheel and the spring seat is provided with micro-texture.

[0007] Preferably, the side surface of the primary flywheel is provided with micro-texture.

[0008] Preferably, the side surface of the spring seat is provided with micro texture.

[0009] Preferably, the side surfaces of the primary flywheel and the spring seat are both provided with micro textures.

[0010] Preferably, the shape of the micro texture is circular, triangular, square, elliptical or rhombus.

[0011] Preferably, the depth of the micro texture is 40-200 μm, and the spacing of the micro texture is 100 μm-500 μm.

[0012] Preferably, the number of the micro-textures is 10-20,000.

[0013] Preferably, the micro-texture has at least one shape.

[0014] Preferably, the primary flywheel comprises a flywheel housing and a positioning ring mounted on the flywheel housing, and the contact surfaces of the flywheel housing and the positioning ring with the spring seat are provided with micro-textures.

[0015] Compared with the related art, the dual-mass flywheel with surface micro-texture provided by the utility model has the following beneficial effects:

[0016] Micro-textures with different characteristics are added to the contact interface between the primary flywheel and the spring seat, or the contact interface between the spring seat and the primary flywheel, or the contact interface between the primary flywheel and the spring seat on both sides, so as to change the contact interface friction coefficient of the components in the dual-mass flywheel and realize the nonlinear characteristics of the dual-mass flywheel with variable damping.

[0017] 2. By introducing micro-texture or different combinations of micro-texture features, the friction coefficient between dual-mass flywheel components can be improved or the nonlinear characteristics of the dual-mass flywheel based on a variable friction coefficient can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an explosion diagram of the utility model;

[0019] Figure 2 It is a cross-sectional view of the utility model;

[0020] Figure 3 This is a schematic diagram of the flywheel housing structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the positioning ring structure of the utility model;

[0022] Figure 5 The spring seat structure of the utility model is shown in FIG. Figure 1 ;

[0023] Figure 6 The spring seat structure of the utility model is shown in FIG. Figure 2 ;

[0024] Figure 7 It is a schematic diagram of a triangular micro-texture structure of the utility model;

[0025] Figure 8 It is a schematic diagram of a circular micro-texture structure of the utility model;

[0026] Fig. 9 It is a schematic diagram of a square micro-texture structure of the present invention.

[0027] Numbers in the figure: 1, ring gear; 2, primary flywheel; 3, spring seat; 4, arc spring; 5, force transfer plate; 6, pressure plate; 7, secondary flywheel; 8, positioning ring. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0030] See also Figures 1 to 9 A dual-mass flywheel with surface micro-texture provided in an embodiment of the utility model comprises: a primary flywheel 2, a ring gear 1, a spring seat 3, an arc spring 4, a force transmission plate 5, a pressure plate 6, and a secondary flywheel 7. The contact surface between the primary flywheel 2 and the spring seat 3 is provided with micro-texture, the side surface of the primary flywheel 2 is provided with micro-texture, the side surface of the spring seat 3 is provided with micro-texture, and the side surface of the primary flywheel 2 and the side surface of the spring seat 3 are both provided with micro-texture.

[0031] In this embodiment, micro-texture may be provided on the side of the primary flywheel 2 close to the spring seat 3, micro-texture may be provided on the side of the spring seat 3 close to the primary flywheel 2, or micro-texture may be provided on both the side of the primary flywheel 2 and the side of the spring seat 3.

[0032] The shape of the micro texture is circular, triangular, square, elliptical or rhombus, the depth of the micro texture is 40-200 μm, the spacing of the micro texture is 100 μm-500 μm, the number of the micro texture is 10-20000, and the shape of the micro texture is at least one.

[0033] This embodiment can be matched with micro-textures of different numbers and depths, which can change the contact interface friction coefficient of the components in the dual mass flywheel. Micro-textures or different combinations of micro-texture features can also be introduced to improve the friction coefficient between the dual mass flywheel components or realize the nonlinear characteristics of the dual mass flywheel based on a variable friction coefficient.

[0034] The primary flywheel 2 comprises a flywheel housing and a positioning ring 8 mounted on the flywheel housing. The contact surfaces of the flywheel housing and the positioning ring 8 with the spring seat 3 are provided with micro textures.

[0035] In this embodiment, micro-textures are arranged on two surfaces, which has a better effect than a single surface. Meanwhile, it is not just defined as a single contact surface being provided with micro-textures, but several contact surfaces of the primary flywheel 2 and the spring seat 3 are provided with micro-textures.

[0036] In the actual operation of the dual-mass flywheel, the friction coefficient between the parts is variable. The utility model introduces surface micro-texture to change the contact interface friction coefficient between the parts of the dual-mass flywheel at different relative torsion angles, produce nonlinear damping changes, establish a more realistic model, and realize the nonlinear characteristics of the dual-mass flywheel from the aspect of variable friction coefficient.

[0037] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A dual-mass flywheel with surface micro-texture, comprising: A primary flywheel (2), a ring gear (1), a spring seat (3), an arc spring (4), a force transmission disc (5), a pressure plate (6), and a secondary flywheel (7), wherein a contact surface between the primary flywheel (2) and the spring seat (3) is provided with a micro texture.

2. A dual mass flywheel with surface microtexture according to claim 1, characterized in that: The side surface of the primary flywheel (2) is provided with a micro texture.

3. A dual mass flywheel with surface microtexture according to claim 1, characterized in that: The side surface of the spring seat (3) is provided with a micro texture.

4. A dual mass flywheel with surface microtexture according to claim 1, characterized in that: The side surfaces of the primary flywheel (2) and the spring seat (3) are both provided with micro textures.

5. A dual mass flywheel with surface microtexture according to any one of claims 1 to 4, characterized in that: The shape of the micro texture is circular, triangular, square, elliptical or rhombus.

6. A dual mass flywheel with surface microtexture according to claim 5, characterized in that: The depth of the micro texture is 40-200 μm, and the spacing of the micro texture is 100 μm-500 μm.

7. A dual mass flywheel with surface microtexture according to claim 5, characterized in that: The number of the micro textures is 10-20000.

8. A dual mass flywheel with surface microtexture according to claim 6 or 7, characterized in that: The micro texture has at least one shape.

9. A dual mass flywheel with surface microtexture according to claim 8, characterized in that: The primary flywheel (2) comprises a flywheel housing and a positioning ring (8) mounted on the flywheel housing, and the contact surfaces of the flywheel housing and the positioning ring (8) with the spring seat (3) are both provided with micro-textures.

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