Buffer noise reduction assembly and noise reduction type relay
By introducing an elastic buffer between the moving and fixed parts, the noise problem of the high-voltage DC relay when it is de-energized is solved, achieving effective noise buffering and improved user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-03-10
AI Technical Summary
In the prior art, the noise generated when moving parts come into contact with fixed parts affects the user experience, especially when the high-voltage DC relay of new energy electric vehicles is de-energized, the rigid contact between the push rod seat and the yoke plate causes excessive noise.
A noise reduction and buffer component is designed, comprising a fixed part, a movable part, and an elastic buffer. The buffer part of the elastic buffer first contacts the fixed part, generating elastic deformation to buffer the noise, and then the movable part contacts the fixed part to reduce the noise.
It effectively reduces noise when moving parts contact fixed parts, improving the user experience, especially addressing the noise issue when the high-voltage DC relay is de-energized.
Smart Images
Figure CN223986543U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of relay technology, specifically to a buffer noise reduction component and a noise reduction relay. Background Technology
[0002] In existing technologies, there is often a structure where a moving part moves toward and contacts a fixed part. When the moving part contacts the fixed part, a collision occurs, generating noise. This noise can mislead users into thinking that the product is of poor quality, affecting the user experience. For example, in a high-voltage DC relay installed in a new energy electric vehicle, when the product is powered off, the return spring causes the moving iron core, push rod, and push rod seat to move downwards together, putting the relay in a state where the moving and stationary contacts are disconnected. This causes the push rod seat to directly impact and contact the yoke plate. The contact between the two is rigid, thus generating significant noise and affecting the user experience. Utility Model Content
[0003] The present invention aims to provide a buffer noise reduction component to solve the above-mentioned technical problems.
[0004] To achieve the above objectives, the technical solution of this utility model is as follows: a buffer noise reduction component, including a fixed part, a movable part, and an elastic buffer. The elastic buffer includes a fixed part and a buffer part. The fixed part is fixedly installed on the movable part, and the buffer part is located outside the movable part and extends towards the fixed part, so that the buffer part is closer to the fixed part than the movable part. When the movable part and the elastic buffer together move towards the fixed part, the buffer part and the movable part come into contact with the fixed part one after another, and the buffer part undergoes elastic deformation to form a buffer, thereby reducing the noise generated by the contact between the movable part and the fixed part.
[0005] Preferably, the elastic buffer is an elastic metal sheet.
[0006] Preferably, the elastic metal sheet is an alloy copper sheet or a chromium-zirconium copper sheet.
[0007] Preferably, the elastic metal sheet is a metal sheet with uniform thickness, and the thickness range of the elastic metal sheet is 0.1 to 1 mm.
[0008] Preferably, the fixing part is a fixing plate, and the buffer part includes a buffer plate and a contact plate. The buffer plate is inclinedly disposed between the buffer plate and the contact plate. The contact plate is closer to the fixing part than the moving part, and the contact plate and the fixing part are in planar contact fit.
[0009] Preferably, the elastic buffer has a symmetrical structure, with two buffer parts located on the left and right sides of the fixing part, respectively.
[0010] Preferably, the buffer section has a long slot along its length.
[0011] Preferably, the movable part has a through mounting groove, the fixed part is fixedly embedded in the mounting groove, the fixed part has a limit hole, and the groove wall of the mounting groove is provided with a limit protrusion, the limit hole and the limit protrusion are correspondingly limited and matched.
[0012] This utility model also provides a noise-reducing relay, including any of the above-described buffer noise-reducing components, with the fixed part being a yoke plate and the movable part being a push rod seat.
[0013] Preferably, it also includes a push rod, a moving iron core, and a stationary iron core. A through hole is provided on the yoke plate, and the push rod is disposed through the through hole. One end of the push rod is fixedly installed in the push rod seat, and the other end of the push rod is fixedly installed in the moving iron core. The stationary iron core is installed on the side of the yoke plate close to the moving iron core. A return spring is provided on the push rod between the moving iron core and the stationary iron core, and the return spring force is greater than the deformation force of the elastic buffer.
[0014] This utility model has the following beneficial effects:
[0015] When the movable part and the elastic buffer part move together toward the fixed part, the buffer part of the elastic buffer part and the movable part come into contact with the fixed part one after the other. The buffer part undergoes elastic deformation to form a buffer. That is, the buffer part first comes into elastic contact with the fixed part to form a buffer, and then the movable part comes into contact with the fixed part. The force is smaller, thereby reducing the noise generated by the contact between the movable part and the fixed part, thus improving the user experience. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the buffer noise reduction component of an embodiment of the present invention from one viewpoint.
[0017] Figure 2 This is a schematic diagram of the buffer noise reduction component of an embodiment of the present invention from another perspective.
[0018] Figure 3 This is a schematic diagram of the assembly of the movable part and the elastic buffer part according to an embodiment of the present invention.
[0019] Figure 4 This is a front view of the elastic buffer component according to an embodiment of the present invention.
[0020] Figure 5 This is a top view of the elastic buffer component according to an embodiment of the present invention.
[0021] Figure 6 This is a cross-sectional view of the movable part in the mounting groove according to an embodiment of the present invention.
[0022] Figure 7This is a front view of a noise-reducing relay according to an embodiment of the present invention.
[0023] Figure 8 This is a top-side view of a noise-reducing relay according to an embodiment of the present invention.
[0024] Figure 9 This is a left view of a noise-reducing relay according to an embodiment of the present invention.
[0025] Figure 10 yes Figure 9 Sectional view at point AA.
[0026] The attached diagram is labeled as follows: 1. Fixed component, 2. Moving component, 3. Elastic buffer component, 31. Fixed plate, 32. Buffer plate, 33. Contact plate, 4. Long slot, 5. First limiting hole, 6. Second limiting hole, 7. Mounting slot, 8. First limiting protrusion, 9. Second limiting protrusion, 10. Push rod, 11. Moving iron core, 12. Stationary iron core, 13. Moving spring, 14. Return spring. Detailed Implementation
[0027] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.
[0028] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0030] See Figure 1-6 As shown in the figure, as an embodiment of the present invention, a buffer noise reduction component is provided, including a fixed part 1, a movable part 2, and an elastic buffer 3. The elastic buffer 3 includes a fixed part and a buffer part. The fixed part is fixedly installed on the movable part 2, and the buffer part is located outside the movable part 2 and extends towards the fixed part 1, so that the buffer part is closer to the fixed part 1 than the movable part 2 (in its natural state without external force). When the movable part 2 and the elastic buffer 3 move closer to the fixed part 1 together, the buffer part of the elastic buffer 3 and the movable part 2 come into contact with the fixed part 1 one after another, and the buffer part undergoes elastic deformation to form a buffer. That is, the buffer part first undergoes elastic contact with the fixed part 1 to form a buffer, and then the movable part 2 comes into contact with the fixed part 1. The force is smaller, thereby reducing the noise generated by the contact between the movable part 2 and the fixed part 1, thereby improving the user experience.
[0031] In this embodiment, the elastic buffer 3 is an elastic metal sheet. Specifically, the elastic metal sheet is an alloy copper sheet or a chromium-zirconium copper sheet. The elastic metal sheet is a metal sheet with uniform width and thickness, and its thickness is 0.15mm. This provides better elastic buffering effect and ensures that it will not deform even after long-term use, thus guaranteeing the stability of elastic recovery. Of course, in other cases, other values between 0.1 and 1mm in thickness of the elastic metal sheet are also possible and are not limited here.
[0032] In this embodiment, the elastic buffer 3 has a symmetrical structure with two buffer parts located on the left and right sides of the fixed part, respectively. The fixed part is a fixed plate 31, and the buffer part includes a buffer plate 32 and a contact plate 33. The buffer plate 32 is inclined between the buffer plate 32 and the contact plate 33. The contact plate 33 is closer to the fixed part 1 than the movable part 2. The contact plate 33 and the fixed part 1 are in planar contact. When the elastic buffer 3 moves towards the fixed part 1 and approaches the contact, the contact plate 33 and the fixed part 1 are always in planar contact. The inclination of the buffer plate 32 gradually decreases, so that the vertical distance between the contact plate 33 and the fixed plate 31 gradually shortens and the horizontal distance between the contact plate 33 and the fixed plate 31 gradually increases. That is, the contact plate 33 moves horizontally outward away from the fixed plate 31. This structure makes the elastic deformation of the elastic buffer 3 greater and the buffering effect more stable and reliable.
[0033] In this embodiment, a long slot 4 is provided in the buffer part along the length direction. The main body of the long slot 4 is located in the buffer plate 32, and the end of the long slot 4 extends to the contact plate 33, thereby increasing the elasticity of the buffer part and further improving the buffering effect.
[0034] In this embodiment, a through mounting groove 7 is formed within the movable component 2. The fixing part is fixedly embedded in the mounting groove 7. A limiting hole is provided in the fixing part, and a limiting protrusion is provided on the groove wall of the mounting groove 7. The limiting hole and the limiting protrusion are correspondingly matched for limiting engagement. The limiting hole includes a first limiting hole 5 located at the center of the fixing part and a second limiting hole 6 located around the first limiting hole 5. The limiting protrusion includes a first limiting protrusion 8 and a second limiting protrusion 9 that are respectively matched for limiting engagement with the first limiting hole 5 and the second limiting hole 6, thereby ensuring the installation stability of the elastic metal sheet on the movable component 2.
[0035] See Figure 7-10 As shown, this utility model also provides a noise-reducing relay, specifically a high-voltage DC relay used in new energy electric vehicles, including the buffer noise reduction component described in the above embodiment. The fixed part 1 is a yoke plate, and the movable part 2 is a push rod seat. Specifically, the noise-reducing relay also includes a push rod 10, a moving iron core 11, and a stationary iron core 12. A through hole is provided on the yoke plate, and the push rod 10 is disposed through the through hole. One end of the push rod 10 is fixedly installed in the push rod seat, and a moving spring 13 for fixing the moving contact is installed on the push rod seat. The other end of the push rod 10 is fixedly installed in the moving iron core 11. The stationary iron core 12 is installed on the side of the yoke plate close to the moving iron core 11, and a return spring 14 is sleeved on the push rod 10 between the moving iron core 11 and the stationary iron core 12. The return spring force of the return spring 14 is greater than the deformation force of the elastic buffer 3, so that under the action of the return spring force of the return spring 14, the moving iron core 11 and the push rod 10 can be driven to move downward into place so that the moving and stationary contacts are disconnected.
[0036] When the relay is energized, the moving iron core 11 moves upward toward the stationary iron core 12. At the same time, the push rod 10, the push rod seat, the elastic buffer 3, and the moving spring 13 move upward together, causing the push rod seat and the elastic buffer 3 to move away from the yoke plate in sequence. At this time, the return spring 14 is compressed and stored, and the elastic buffer 3 returns to its initial state without elastic deformation. At this time, the moving and stationary contacts are in the state of being attracted and contacted.
[0037] When the relay is de-energized, the moving iron core 11 is driven to move downward toward the stationary iron core 12 by the reset force of the reset spring 14. At the same time, the push rod 10, the push rod seat, the elastic buffer 3, and the moving spring 13 move downward together. The buffer part of the elastic buffer 3 first contacts the yoke plate and the buffer part undergoes elastic deformation to form a buffer. Then the push rod seat contacts the yoke plate. At this time, the moving and stationary contacts are in a separated and disconnected state. This setting improves the problem of excessive noise when the high voltage DC relay is disconnected and effectively reduces the noise generated by the contact between the push rod seat and the yoke plate, thereby improving the user experience.
[0038] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that any changes in form and detail made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims fall within the protection scope of the present invention.
Claims
1. A cushioning and noise reducing assembly, characterized by: The elastic buffer piece includes a fixed part and a buffer part, the fixed part is fixedly installed on the movable piece, the buffer part is located outside the movable piece and extends towards the fixed part, so that the buffer part is closer to the fixed part than the movable piece, when the movable piece and the elastic buffer piece move together towards the fixed part, the buffer part and the movable piece are in contact with the fixed part in sequence, and the buffer part is elastically deformed to form a buffer, thereby reducing the noise generated by the contact between the movable piece and the fixed part.
2. The cushioning and noise reducing assembly of claim 1, wherein: The elastic buffer piece is an elastic metal sheet.
3. The cushioning and noise reducing assembly of claim 2, wherein: The elastic metal sheet is an alloy copper sheet or a chromium-zirconium copper sheet.
4. The cushioning and noise reducing assembly of claim 2, wherein: The elastic metal sheet is a metal sheet with uniform thickness, and the thickness of the elastic metal sheet ranges from 0.1 to 1 mm.
5. The cushioning and noise reducing assembly of claim 1, wherein: The fixed part is a fixed plate, the buffer part includes a buffer plate and a contact plate, the buffer plate is obliquely arranged between the buffer plate and the contact plate, the contact plate is closer to the fixed part than the movable piece, and the contact plate is in plane contact with the fixed part.
6. The cushioning and noise reducing assembly of claim 1, wherein: The elastic buffer piece has a left-right symmetrical structure, and the buffer part has two buffer parts located on the left and right sides of the fixed part.
7. The cushioning and noise reducing assembly of claim 1, wherein: A long slot hole is formed in the buffer part along the length direction.
8. The cushioning and noise reducing assembly of claim 1, wherein: The movable piece has a left-right through installation slot, the fixed part is fixedly embedded in the installation slot, a limiting hole is formed in the fixed part, a limiting protrusion is arranged on the slot wall of the installation slot, and the limiting hole and the limiting protrusion are in limiting cooperation.
9. A noise-reduced relay, characterized by: The buffer noise reduction assembly includes the buffer noise reduction assembly of any one of claims 1-8, the fixed part is a yoke plate, and the movable piece is a push rod seat.
10. The noise reducing relay of claim 9, wherein: The buffer noise reduction assembly further includes a push rod, a moving iron core and a static iron core, the yoke plate has a through hole, the push rod is arranged in the through hole, one end of the push rod is fixedly installed in the push rod seat, the other end of the push rod is fixedly installed in the moving iron core, the static iron core is installed on the side of the yoke plate close to the moving iron core, a return spring is arranged outside the push rod between the moving iron core and the static iron core, and the return force of the return spring is greater than the deformation force of the elastic buffer piece.