Silicone oil clutch sound absorbing and shock absorbing elastic valve plate

Abstract

The utility model discloses a kind of sound-absorbing and shock-absorbing elastic valve sheets of silicone oil clutch, including shell, end cap and valve sheet, shell is equipped with limit hook, valve sheet shoulder portion cooperates with limit section, it is characterized in that shoulder portion is equipped with spring piece. Spring piece includes fixed part fixedly connected with shoulder portion, and the upwarping portion with elastic deformation ability extending away from shoulder portion from fixed part, when valve sheet rebounds from oil return, upwarping portion is in abutment with limit section, and rebound impact force of valve sheet is buffered by elastic deformation. The utility model absorbs valve sheet rebound impact energy by spring piece elastic deformation, significantly reduces noise decibel value, improves silicone oil clutch NVH performance;While reducing the instantaneous impact force of valve sheet and limit hook, reduce vibration amplitude, avoid component deformation damage, improve component service life and system reliability.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to a sound-absorbing and vibration-damping elastic valve plate for a silicone oil clutch. Background Technology

[0002] In automotive engine cooling systems, the silicone oil clutch is a key component, and its performance directly affects the engine's heat dissipation efficiency and operational stability. Currently, traditional silicone oil clutches typically employ a structure design consisting of a housing, end caps, and valve plates. The limiting hooks on the housing cooperate with the shoulders on the valve plates to achieve the limiting function of the valve plates.

[0003] However, during the actual operation of a silicone oil clutch, the valve plate frequently opens and closes. When it rebounds from the oil hole, a strong impact occurs between the valve plate and the limit hook. This impact not only generates harsh noise, severely affecting the comfort of passengers, but also exerts a significant instantaneous impact force on the valve plate and hook, accelerating component wear, reducing their service life, and consequently affecting the reliability and stability of the entire silicone oil clutch system. Furthermore, traditional structures lack effective technical means for noise and vibration control, making it difficult to meet the increasingly stringent NVH (noise, vibration, and harshness) performance requirements of the automotive industry. Therefore, there is an urgent need to develop a silicone oil clutch valve plate structure that can effectively absorb sound and reduce vibration to improve product performance. Utility Model Content

[0004] To address the shortcomings in the prior art, this utility model provides a sound-absorbing and vibration-damping elastic valve plate for a silicone oil clutch.

[0005] The technical solution adopted by this utility model is: a sound-absorbing and vibration-damping elastic valve plate for a silicone oil clutch, comprising a housing, an end cover and a valve plate, wherein a limit hook is provided on the housing, the limit hook comprising a connecting section and a limiting section, the valve plate having a shoulder that limits and cooperates with the limiting section, and a spring piece is provided on the shoulder, the spring piece comprising;

[0006] A fixing part is fixedly connected to the shoulder;

[0007] The raised portion extends from the fixed portion away from the shoulder and has elastic deformation capability. When the raised portion rebounds from the oil hole, it can abut against the limiting section and buffer the rebound of the valve plate.

[0008] Furthermore, the farthest end of the raised portion forms a contact line. When the valve plate approaches the limit position of the limiting section during its rebound movement, the contact line preferentially makes line contact with the limiting section and relies on the elastic deformation of the raised portion itself to absorb part of the impact energy, thereby achieving noise reduction and buffering.

[0009] Furthermore, the axial projection length (L) of the contact area between the contact line and the limiting segment is 1 / 3 to 3 / 4 of the width (W) of the limiting segment.

[0010] Furthermore, the tilting angle of the tilted portion is 15-30°.

[0011] Furthermore, there is a preset gap between the raised part of the spring sheet and the limiting section at the non-rebound limit position of the valve sheet. At the non-rebound limit position, the valve sheet and the limiting section are separated through the preset gap.

[0012] The beneficial effects of this utility model are:

[0013] 1. Significant Noise Reduction: This application achieves sound absorption and vibration reduction by incorporating a spring plate on the shoulder of the valve plate. The elastic deformation of the spring plate absorbs the energy generated by the valve plate's rebound impact, fundamentally reducing the noise level in decibels. Compared to traditional silicone oil clutch valve plate structures, this effectively improves the harsh noise generated during product operation, greatly enhancing the comfort of passengers and meeting the stringent NVH performance requirements of the automotive industry.

[0014] 2. Buffering and Shock Absorption: When the raised part of the spring plate comes into contact with the limiting section during the valve plate's rebound, its elastic deformation process can fully absorb the impact energy, significantly reducing the instantaneous impact force acting on the valve plate and the limiting hook. This effectively reduces the vibration amplitude of components caused by impact and can also prevent component deformation or damage caused by severe impact, improving the service life of the valve plate and the limiting hook, and enhancing the reliability and stability of the silicone oil clutch system.

[0015] In addition to the objectives, features and advantages described above, this utility model has other objectives, features and advantages.

[0016] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the spring clip structure.

[0020] Figure 4 This is a schematic diagram of the valve plate and spring plate.

[0021] Figure 5 This is a side view of the shrapnel.

[0022] Figure 6 This is a schematic diagram showing the positions of the spring and the limiting section.

[0023] Figure 1-6 In the middle: 1. Housing; 2. End cap; 3. Valve plate; 4. Limit hook; 5. Connecting section; 6. Limiting section; 7. Shoulder; 8. Spring; 9. Fixing part; 10. Raised part; 11. Contact line. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0026] This invention provides a sound-absorbing and vibration-damping elastic valve plate for a silicone oil clutch.

[0027] In this embodiment, refer to Figure 1-6 The sound-absorbing and vibration-damping elastic valve plate of the silicone oil clutch includes a housing 1, an end cap 2 and a valve plate 3. The housing 1 is provided with a limit hook 4, which includes a connecting section 5 and a limiting section 6. The valve plate has a shoulder 7 that cooperates with the limiting section for limiting. The shoulder 7 is provided with a spring 8, which includes:

[0028] Fixing part 9, which is fixedly connected to the shoulder;

[0029] The raised portion 10 extends from the fixed portion away from the shoulder and is elastically deformable. When the raised portion rebounds from the oil hole, it can abut against the limiting section and buffer the rebound of the valve plate.

[0030] In the above technical solution, a spring is added to the shoulder of the valve plate of the silicone oil clutch. The fixed part of the spring is fixed to the shoulder (such as by welding or bolting), and the raised part extends from the fixed part away from the shoulder and has elastic deformation capability. When the valve plate rebounds from the oil hole, the raised part abuts against the limiting section of the limiting hook, and the impact force generated by the rebound of the valve plate is buffered by its own elastic deformation.

[0031] The elastic buffer of the spring effectively absorbs the energy generated by the rebound impact of the valve plate, reducing noise; at the same time, it reduces the instantaneous impact force between the valve plate and the limit hook, improves the service life of components, and enhances the NVH performance and system stability of the silicone oil clutch.

[0032] Specifically, the farthest end of the raised portion forms a contact line 11. When the valve plate approaches the limit position of the limiting section during its rebound movement, the contact line preferentially makes line contact with the limiting section and relies on the elastic deformation of the raised portion itself to absorb part of the impact energy, thereby achieving noise reduction and buffering.

[0033] In this embodiment, the farthest end of the raised portion forms a contact line. When the valve plate rebounds to near the limit position of the limiting section, the contact line preferentially makes line contact with the limiting section. This changes the initial surface contact to line contact. Compared to surface contact, line contact allows the raised portion to undergo elastic deformation more easily upon impact, absorbing some of the impact energy through elastic deformation. This further reduces noise, improves the buffering effect, and optimizes the noise reduction and vibration damping performance of the silicone oil clutch.

[0034] Specifically, the axial projection length (L) of the contact area between the contact line and the limiting segment is 1 / 3 to 3 / 4 of the width (W) of the limiting segment.

[0035] In this embodiment, it is ensured that the spring can fully utilize its elastic deformation to absorb energy during the valve plate rebound process, while avoiding problems such as buffer failure and component damage caused by uneven force or insufficient deformation, thereby extending the service life of the spring and related components and steadily improving noise reduction and vibration damping performance.

[0036] Specifically, the tilt angle of the tilted part is 15-30°.

[0037] In this embodiment, the tilting angle of the raised portion is set to 15-30°. This angle range ensures that the spring plate has sufficient elastic deformation space to absorb impact energy when the valve plate rebounds, while also operating under reasonable stress. This keeps the spring plate in optimal working condition, effectively absorbing impact energy during valve plate rebound, reducing the impact force between the valve plate and the limit hook, lowering noise, and simultaneously improving the reliability and service life of the spring plate, thus enhancing the overall performance of the silicone oil clutch.

[0038] Specifically, there is a preset gap between the raised part of the spring sheet and the limiting section at the non-rebound limit position of the valve sheet. At the non-rebound limit position, the valve sheet and the limiting section are separated through the preset gap.

[0039] In this embodiment, when the valve disc is not at its rebound limit position, there is a preset gap between the raised portion of the spring and the limiting section, and the two only come into contact and collide at the moment the valve disc rebounds to its final position. This design ensures that the valve disc is not disturbed by the spring during normal operation, and the spring only plays its role at the rebound limit position where buffering is required.

[0040] To avoid frequent contact and wear between the spring and the limiting section when the valve plate is not in a necessary state, the service life of the spring and the limiting section is extended. At the same time, the timing of the spring's action is precisely controlled to ensure effective buffering at the moment when the valve plate rebounds and needs the most buffering, thereby improving noise reduction and vibration damping and system reliability.

[0041] The rebound limit position here is defined as the position when the contact end face of the limiting segment (6) and the raised part (10) coincides.

[0042] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A sound-absorbing and vibration-damping elastic valve plate for a silicone oil clutch, comprising a housing, an end cap, and a valve plate, wherein a limit hook is provided on the housing, the limit hook comprising a connecting section and a limiting section, and the valve plate having a shoulder that engages with the limiting section for limiting, characterized in that: A spring clip is provided on the shoulder, the spring clip comprising: A fixing part is fixedly connected to the shoulder; The raised portion extends from the fixed portion away from the shoulder and has elastic deformation capability. When the raised portion rebounds from the oil hole, it can abut against the limiting section and buffer the rebound of the valve plate.

2. The sound-absorbing and vibration-damping elastic valve plate of the silicone oil clutch according to claim 1, characterized in that: The farthest end of the raised portion forms a contact line. When the valve plate approaches the limit position of the limiting section during its rebound motion, the contact line preferentially makes line contact with the limiting section and relies on the elastic deformation of the raised portion itself to absorb part of the impact energy, thereby achieving noise reduction and buffering.

3. The sound-absorbing and vibration-damping elastic valve plate of the silicone oil clutch according to claim 1, characterized in that: The axial projection length (L) of the contact area between the contact line and the limiting segment is 1 / 3 to 3 / 4 of the width (W) of the limiting segment.

4. The sound-absorbing and vibration-damping elastic valve plate of the silicone oil clutch according to claim 1, characterized in that: The angle of the raised portion is 15-30°.

5. The sound-absorbing and vibration-damping elastic valve plate of the silicone oil clutch according to claim 1, characterized in that: There is a preset gap between the raised part of the spring sheet and the limiting section at the non-rebound limit position of the valve sheet. At the non-rebound limit position, the valve sheet and the limiting section are separated through the preset gap.

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