Decoupler

Abstract

The utility model discloses a decoupler which comprises a wheel disc and a hub, a sliding block is arranged in the wheel disc, a spring is arranged in the wheel disc, the sliding block comprises an arch portion surrounding the side portion of the spring and a head portion perpendicular to the arch portion, a connecting face is arranged in the head portion, and the two ends of the spring are fixedly connected with the connecting face. The outer surface of the hub is fixedly connected with a fixing block, an included angle alpha is formed between the space plane where the outer plane of the head of the sliding block is located and the connecting face, so that the centripetal force of the force bearing point of the outer arc face of the arch part is increased, the sliding block tightly presses the inner ring of the wheel disc, the friction force is increased when the sliding block and the inner ring move relatively, and oscillation is effectively filtered.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to a decoupler. Background Art

[0002] A decoupler is an electrical device used to remove the DC connection between circuits while allowing AC signals to pass smoothly. Its working principle is to allow DC to pass outside a certain DC voltage threshold and block DC within the threshold.

[0003] When the decoupler is in use, in order to consume vibration energy to a certain extent, the crankshaft decoupler needs a certain amount of damping. The existing decoupler generally does not have an additional damping mechanism, resulting in less damping and less vibration energy consumption. Although some existing technologies have added additional damping mechanisms, the structure is complex, the cost is high, and it is not conducive to production. After searching, it was found that the patent with application number CN201680017181.6 also has the above technical problems. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art, and provides a decoupler, wherein the space plane where the connecting surface of the slider is located passes through the center line of the wheel disc, and when the slider pushes the spring to be compressed, the outer arc surface of the arch abuts against the outer ring, and the slider is subjected to a force F perpendicular to the outer plane of the head. When the force F acts, a component tangential force in a direction parallel to the tangent point and a component force in a direction perpendicular to the tangent point deviate from the centripetal force are generated, resulting in the slider being subjected to a force deviating from the center of the circle in addition to the tangential force in the circumferential direction, wherein the center of the circle refers to a point on the center line of the axis, and the space plane where the outer plane of the head is located forms an angle α with the connecting surface. Due to the setting of the angle α, the angle between the force F and the component tangential force becomes smaller, and the angle between the force F and the component tangential force becomes larger. Due to the interaction of the forces, the component force deviates from the centripetal force and the centripetal force is an interaction force, resulting in the increase of the magnitude of the component centripetal force, thereby pressing the slider against the inner ring of the wheel disc 1, thereby increasing the friction force when the slider and the inner ring move relative to each other, and effectively filtering the vibration.

[0005] The utility model also provides a decoupler as described above, comprising: a wheel disc and a wheel hub, a slider is arranged inside the wheel disc, a spring is arranged inside the wheel disc, the slider comprises an arch portion surrounding the side portion of the spring and a head portion perpendicular to the arch portion, a connecting surface is arranged inside the head portion, two ends of the spring are fixedly connected to the connecting surface, and a fixing block is fixedly connected to the outer surface of the wheel hub.

[0006] According to the decoupler, the number of the sliding blocks is four and they are symmetrically arranged, and the number of the springs is two and they are symmetrically arranged.

[0007] According to the decoupler, the stiffness of the two springs is the same.

[0008] According to the decoupler, the space plane where the connection surface is located passes through the center line of the wheel disc, and the space plane where the outer plane of the head is located forms an angle α with the connection surface, and the angle α is 15 degrees.

[0009] According to the decoupler, the inner hole of the hub is fixedly connected with a driving crankshaft, which is not shown in the figure, and the axial center lines of the hub and the wheel disc coincide with each other.

[0010] According to the decoupler, a mounting cylinder is provided inside the wheel hub, a mounting groove is formed in the gap between the mounting cylinder and the wheel hub, a bearing is fixedly connected to the outer surface of the mounting cylinder, and the outer surface of the bearing is fixedly connected to the wheel disc.

[0011] According to the decoupler, the inner side wall of the wheel disc is fixedly connected with an end cover, the outer surface of the hub is provided with a limiting groove, the outer surface of the limiting groove is fixedly connected with a baffle, and the outer annular surface of the baffle fits with the end cover.

[0012] According to the decoupler, a sealing ring is fixedly connected to the outer surface of the hub, and the sealing ring is located on the side of the baffle.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0015] Figure 1 This is a schematic diagram of the overall structure of a decoupler of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of a decoupler of the utility model;

[0017] Figure 3 This is a structural schematic diagram of a decoupler of the utility model;

[0018] Figure 4 The utility model is a structural schematic diagram of a decoupler.

[0019] Legend:

[0020] 1. Wheel disc; 2. Wheel hub; 3. Limiting groove; 4. End cover; 5. Sealing ring; 6. Bearing; 7. Mounting groove; 8. Baffle; 9. Mounting cylinder; 10. Fixed block; 11. Slider; 12. Spring; 13. Connecting surface. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0022] Reference Figure 1-4 The utility model embodiment is a decoupler, which includes: a wheel disc 1 and a wheel hub 2, the inner hole of the wheel hub 2 is fixedly connected with a driving crankshaft, which is not drawn in the figure, the axial center lines of the wheel hub 2 and the wheel disc 1 coincide with each other, a mounting cylinder 9 is arranged inside the wheel hub 2, and a mounting groove 7 is formed between the mounting cylinder 9 and the wheel hub 2, the outer surface of the mounting cylinder 9 is fixedly connected with a bearing 6, and the outer surface of the bearing 6 is fixedly connected to the wheel disc 1, a slider 11 is arranged inside the wheel disc 1, and a spring 12 is arranged inside the wheel disc 1, and the number of the sliders 11 is four and The springs 12 are symmetrically arranged, and the number of the springs 12 is two and symmetrically arranged. The two springs 12 have the same stiffness. The slider 11 includes an arch surrounding the side portion of the spring 12 and a head perpendicular to the arch. A connecting surface 13 is arranged inside the head. Both ends of the spring 12 are fixedly connected to the connecting surface 13. A fixing block 10 is fixedly connected to the outer surface of the hub 2. The spatial plane where the connecting surface 13 is located passes through the center line of the wheel disc 1. The spatial plane where the outer plane of the head is located forms an angle α with the connecting surface. The angle α is 15 degrees. The hub 2 is molded and manufactured according to the required damping size. The hub 2 is driven to rotate by the active crankshaft. With the action of the bearing 6, the hub 2 and the wheel disc 1 rotate relatively, so that the fixing block 10 squeezes the slider 11, and then the slider 11 compresses the spring 12, and then the decoupler generates torque when it rotates. When the slider 11 pushes the spring 12 to compress, the outer arc surface of the arch abuts against the outer ring, and the slider 11 is subjected to a force F perpendicular to the outer plane of the head. Therefore, when the force F acts, it will generate a component force in a parallel motion direction along the tangent point and a component force in a vertical motion direction along the tangent point. Due to the effect of the component force in the straight motion direction, the slider 11 is subjected to a centripetal force pointing to the center of the circle in addition to the tangential force along the circumferential direction. The center of the circle refers to the point on the center line of the axis, and due to the setting of the angle α, the angle between the force F and the tangential force of the component force becomes smaller, and the angle between the force F and the centripetal force becomes larger. Since the magnitude of the force F remains unchanged, the interaction of the forces causes the magnitude of the component force deviating from the centripetal force to increase, thereby causing the slider 11 to press the inner ring of the wheel disc 1, and thereby increasing the friction force when the slider 11 moves relative to the inner ring, thereby effectively filtering the vibration.

[0023] An end cover 4 is fixedly connected to the inner side wall of the wheel disc 1, a limiting groove 3 is provided on the outer surface of the wheel hub 2, a sealing ring 5 is fixedly connected to the outer surface of the wheel hub 2, the sealing ring 5 is located on the side of the baffle 8, the outer surface of the limiting groove 3 is fixedly connected to the baffle 8, the outer ring surface of the baffle 8 and the end cover 4 are in contact with each other, the end cover 4 is used to ensure the closure of the connecting surface between the wheel hub 2 and the end cover 4, and the sealing ring 5 is used to ensure that the interior of the bearing 6 plays a protective role.

[0024] Working principle: The active crankshaft drives the wheel hub 2 to rotate, and with the action of the bearing 6, the wheel hub 2 and the wheel disc 1 rotate relative to each other, so that the fixed block 10 squeezes the slider 11, and then the slider 11 compresses the spring 12, and then the decoupler rotates to generate torque, and when the slider 11 pushes the spring 12 to compress, the outer arc surface of the arch abuts against the outer ring, and the slider 11 is subjected to a force F perpendicular to the outer plane of the head. Therefore, when the force F acts, it will generate a component force parallel to the tangent point and a component force perpendicular to the tangent point. The effect of the component force in the straight motion direction causes the slider 11 to be subjected to a centripetal force away from the center of the circle in addition to the tangential force along the circumferential direction. The center of the circle refers to the point on the center line of the axis, and due to the setting of the angle α, the angle between the motion direction and the tangential force of the component force becomes smaller, and the angle between the component force away from the centripetal force becomes larger. Due to the interaction of forces, the component force away from the centripetal force and the centripetal force are interaction forces, resulting in an increase in the magnitude of the centripetal force, causing the slider to press the inner ring of the wheel disc, and thereby increasing the friction when the slider and the inner ring move relative to each other.

[0025] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A decoupler, characterized in that: include: A wheel disc (1) and a wheel hub (2), wherein a slider (11) is arranged inside the wheel disc (1), a spring (12) is arranged inside the wheel disc (1), the slider (11) comprises an arch portion surrounding the side portion of the spring (12) and a head portion perpendicular to the arch portion, a connecting surface (13) is arranged inside the head portion, two ends of the spring (12) are fixedly connected to the connecting surface (13), and a fixing block (10) is fixedly connected to the outer surface of the wheel hub (2).

2. A decoupler according to claim 1, characterized in that: The number of the sliders (11) is four and they are symmetrically arranged, and the number of the springs (12) is two and they are symmetrically arranged.

3. A decoupler according to claim 1, characterized in that: The two springs (12) have the same stiffness.

4. A decoupler according to claim 1, characterized in that: The spatial plane where the connecting surface (13) is located passes through the center line of the wheel disc (1), and the spatial plane where the outer plane of the head is located forms an angle α with the connecting surface, and the angle α is 15 degrees.

5. A decoupler according to claim 1, characterized in that: The inner hole of the wheel hub (2) is fixedly connected to a driving crankshaft, and the axial center lines of the wheel hub (2) and the wheel disc (1) coincide with each other.

6. A decoupler according to claim 5, characterized in that: A mounting cylinder (9) is arranged inside the wheel hub (2), a gap between the mounting cylinder (9) and the wheel hub (2) forms a mounting groove (7), an outer surface of the mounting cylinder (9) is fixedly connected to a bearing (6), and an outer surface of the bearing (6) is fixedly connected to the wheel disc (1).

7. A decoupler according to claim 1, characterized in that: The inner side wall of the wheel disc (1) is fixedly connected to an end cover (4), the outer surface of the wheel hub (2) is provided with a limiting groove (3), the outer surface of the limiting groove (3) is fixedly connected to a baffle (8), and the outer annular surface of the baffle (8) is in contact with the end cover (4).

8. A decoupler according to claim 7, characterized in that: A sealing ring (5) is fixedly connected to the outer surface of the hub (2), and the sealing ring (5) is located on the side of the baffle (8).

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