A vibration-resistant discrete device lead frame with a protective structure

Abstract

This utility model relates to the field of lead frame technology and discloses a vibration-resistant discrete device lead frame with a protective structure. It includes a lead frame body and a control component on one side of the lead frame body. The control component contains multiple oil cylinders evenly arranged around the bottom of the lead frame body. Displacement of the lead frame body drives a connected fixed platform, which in turn pushes a support rod to move linearly along the sliding window of the oil cylinder, thereby causing the end moving disc to slide on the inner wall of the oil cylinder. During the sliding of the moving disc, the connecting holes on its surface guide the oil to flow on both sides. The viscous friction of the oil generates damping force, and the support spring on one side of the moving disc deforms with its compression or stretching. The spring not only assists in providing buffering force and mitigating vibration impact, but also allows the moving disc to return to its original position after the vibration weakens due to elastic restoring force, ensuring the stability of the support structure. By cooperating with the oil cylinders and the moving disc to construct a damping bottom support system, the limitations of existing systems that rely on rigid resistance or simple elastic latches on the sides are overcome.

Description

Technical Field

[0001] This utility model relates to the field of lead frame technology, and in particular to a vibration-resistant discrete device lead frame with a protective structure. Background Technology

[0002] As the carrier and conductive medium of the chip, the lead frame of discrete devices directly affects the device lifespan due to its structural stability in vibration environments (such as automotive electronics and industrial motor equipment). Currently, to address vibration issues, existing lead frames mostly adopt two improvement approaches: one is to increase the rigidity by thickening the lead frame body material, and the other is to add simple elastic clips on the sides of the frame.

[0003] Vibration energy cannot be effectively absorbed: Existing solutions rely on rigidity to resist vibration or only use simple side elastic clips for buffering, without setting up a damping support structure at the bottom of the frame. Vibration energy can be directly transmitted to the chip at the top of the frame, causing fatigue cracking of the chip solder joints and leading to electrical connection failure.

[0004] The contradiction between supporting stability and adaptability: Although some frames have a single support column at the bottom, the lack of damping design and insufficient number of columns make it impossible to achieve uniform stress distribution. Increasing the number of support columns, on the other hand, leads to stress concentration during assembly or temperature changes due to the lack of elastic adjustment, which in turn reduces structural stability. Utility Model Content

[0005] The technical problem to be solved by this utility model is that the existing technology has the disadvantage of insufficient overall protection of the device. To this end, we propose a vibration-resistant discrete device lead frame with a protective structure.

[0006] To achieve the above objectives, this application adopts the following technical solution: a vibration-resistant discrete device lead frame with a protective structure, comprising a lead frame body, a control component disposed on one side of the lead frame body, the control component comprising multiple oil cylinders, a threaded post fixedly connected to the end of each oil cylinder away from the lead frame body, a moving disc inside each oil cylinder, the moving disc being slidably connected to the inner wall of the oil cylinder, multiple through holes being opened on the surface of the moving disc, a support spring disposed on one side of the moving disc, a support rod fixedly connected to the side of the moving disc near the lead frame body, and a fixed platform fixedly connected to the end of the support rod near the lead frame body.

[0007] Preferably, the plurality of oil cylinders are evenly arranged around the bottom of the lead frame body.

[0008] Preferably, a fixing ring groove is formed around the motion disc, and a sealing ring is fitted inside the fixing ring groove.

[0009] Preferably, the outer ring wall of the sealing ring is in contact with the inner wall of the oil cylinder.

[0010] Preferably, a positioning cylinder is sleeved and fixed at one end of the support spring, and the end of the positioning cylinder away from the support spring is fixedly connected to the bottom of the inner cavity of the oil cylinder.

[0011] Preferably, a positioning groove is provided on the side of the motion disk away from the lead frame body, and one end of the support spring is fixedly connected to the bottom of the positioning groove cavity.

[0012] Preferably, a sliding window is provided at one end of the oil cylinder near the lead frame body, and the end of the support rod away from the moving disc extends through the sliding window to the outside of the oil cylinder.

[0013] Preferably, the fixed platform is fixedly connected to the lead frame body.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] The device of this utility model includes a lead frame body and a control component on one side of the lead frame body. The control component includes multiple oil cylinders evenly arranged around the bottom of the lead frame body. The threaded post fixed at the end of the oil cylinder away from the lead frame body can be adapted to different installation scenarios, improving the versatility of the structure.

[0016] When the frame is subjected to vibration, the displacement of the lead frame body causes the connected fixed platform to move. The fixed platform pushes the support rod to move linearly along the sliding window of the oil cylinder, which in turn causes the end moving disk to slide on the inner wall of the oil cylinder. During the sliding of the moving disk, the connecting holes on its surface guide the oil to flow on both sides. The viscous friction of the oil generates damping force, which consumes vibration energy and weakens the transmission intensity.

[0017] The support spring on one side of the moving disc will deform as it is squeezed or stretched. The positioning cylinder at one end of the spring is fixed to the bottom of the inner cavity of the oil cylinder, which can limit the direction of spring deformation and prevent deviation. The spring not only helps to provide buffering force and reduce vibration impact, but also can reset the moving disc by elastic restoring force after the vibration weakens, ensuring the stability of the support structure.

[0018] This design uses an oil cylinder and a moving plate to construct a damped bottom support system, which changes the limitations of existing systems that rely on rigid resistance or simple elastic buckles on the sides. It can prevent vibration from being transmitted to the chip and reduce the risk of chip solder joint fatigue cracking and electrical connection failure. Attached Figure Description

[0019] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:

[0020] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall exploded structure of this utility model;

[0022] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0023] Figure 4 This is a schematic diagram of the control component structure of this utility model;

[0024] Figure 5 This is an exploded structural diagram of the control component of this utility model.

[0025] Legend: 1. Lead frame body; 2. Control component; 201. Oil cylinder; 202. Threaded column; 203. Moving disc; 204. Connecting hole; 205. Fixing ring groove; 206. Sealing ring; 207. Support spring; 208. Positioning groove; 209. Positioning cylinder; 210. Support rod; 211. Sliding window; 212. Fixing platform. Detailed Implementation

[0026] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0027] Reference Figures 1 to 5 As shown, this utility model provides a technical solution: a vibration-resistant discrete device lead frame with a protective structure, including a lead frame body 1, and a control component 2 is provided on one side of the lead frame body 1. The control component 2 includes multiple oil cylinders 201, which are evenly arranged around the bottom of the lead frame body 1. A threaded post 202 is fixedly connected to the end of the oil cylinder 201 away from the lead frame body 1. The design of the threaded post 202 allows the entire component to be adapted to different installation scenarios, improving the versatility of the structure.

[0028] A support spring 207 is provided on one side of the moving disc 203. A positioning cylinder 209 is fixedly sleeved at one end of the support spring 207. The end of the positioning cylinder 209 away from the support spring 207 is fixedly connected to the bottom of the inner cavity of the oil cylinder 201. A positioning groove 208 is opened on the side of the moving disc 203 away from the lead frame body 1. One end of the support spring 207 is fixedly connected to the bottom of the inner cavity of the positioning groove 208. A support rod 210 is fixedly connected to the side of the moving disc 203 near the lead frame body 1. A sliding window 211 is opened on the end of the oil cylinder 201 near the lead frame body 1. The end of the support rod 210 away from the moving disc 203 extends through the sliding window 211 to the outside of the oil cylinder 201. A fixed platform 212 is fixedly connected to the end of the support rod 210 near the lead frame body 1. The platform surface of the fixed platform 212 is fixedly connected to the lead frame body 1. When subjected to vibration, the lead frame body 1 first undergoes displacement, which drives the fixed platform 212 fixedly connected to it to move synchronously. The fixed platform 212 then pushes the connected support rod 210, causing the support rod 210 to move linearly along the sliding window 211 at the end of the oil cylinder 201. The movement of the support rod 210 is directly transmitted to the moving disk 203 at its end, causing the moving disk 203 to slide on the inner wall of the oil cylinder 201.

[0029] During the sliding of the moving disk 203, the connecting holes 204 on its surface guide the oil in the oil cylinder 201 to flow on both sides of the moving disk 203. The sealing rings 206 within the fixing grooves 205 around the moving disk 203 tightly adhere to the inner wall of the oil cylinder 201, preventing oil leakage. The flow of oil on both sides of the moving disk 203 generates damping force, which consumes vibration energy and weakens the transmission intensity of vibration. Simultaneously, the threaded post 202 at the end of the oil cylinder 201 away from the lead frame body 1 allows the entire control assembly 2 to be stably installed at the target position, providing basic support for subsequent buffering actions. While the moving disk 203 slides, the support spring 207 on one side undergoes elastic deformation due to the compression or stretching of the moving disk 203. One end of the support spring 207 is fixed to the bottom of the inner cavity of the oil cylinder 201 by a positioning cylinder 209. The positioning cylinder 209 strictly limits the deformation direction of the support spring 207, preventing spring displacement and resulting in misalignment of the buffering force. A support spring 207 is connected in the positioning groove 208 on the side of the moving disk 203 away from the lead frame body 1. The support spring 207 will extend and retract synchronously with the displacement of the moving disk 203: on the one hand, the support spring 207 provides basic buffering force to further reduce the impact of vibration on the lead frame body 1; on the other hand, after the vibration weakens, it will pull or push the moving disk 203 back to the initial position through its own elastic restoring force to ensure that the support structure is always in a stable working state.

[0030] A moving plate 203 is built into the oil cylinder 201. The moving plate 203 is slidably connected to the inner wall of the oil cylinder 201. Multiple through holes 204 are formed on the surface of the moving plate 203. Fixing ring grooves 205 are formed around the moving plate 203, and a sealing ring 206 is fitted inside the fixing ring grooves 205. The outer ring wall of the sealing ring 206 contacts the inner wall of the oil cylinder 201. Through the cooperation of the oil cylinder 201 and the moving plate 203, a bottom support system with damping force is constructed, completely changing the limitations of existing solutions that rely on rigid resistance or simple elastic clips on the sides. The damping force can actively absorb and dissipate vibration energy, preventing vibration from being directly transmitted to the chip at the top of the frame, significantly reducing fatigue cracking of chip solder joints due to long-term vibration, and fundamentally reducing the risk of electrical connection failure. Multiple oil cylinders 201 are evenly arranged around the bottom of the lead frame body 1, which can achieve all-round uniform force support for the lead frame body 1. Compared with the design of a single support column, it can effectively avoid structural deformation caused by excessive local force. The sealing ring 206 on the moving plate 203 ensures the sealing of the oil cylinders 201 and ensures that the damping force plays a stable role in the long term.

[0031] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A vibration-resistant discrete device lead frame with a protective structure, characterized in that, The device includes a lead frame body, a control component on one side of the lead frame body, the control component including multiple oil cylinders, a threaded post fixedly connected to the end of each oil cylinder away from the lead frame body, a moving disc inside each oil cylinder, the moving disc being slidably connected to the inner wall of the oil cylinder, multiple through holes on the surface of the moving disc, a support spring on one side of the moving disc, a support rod fixedly connected to the side of the moving disc near the lead frame body, and a fixed platform fixedly connected to the end of the support rod near the lead frame body.

2. The vibration-resistant discrete device lead frame with protective structure according to claim 1, characterized in that: Multiple oil cylinders are evenly arranged around the bottom of the lead frame body.

3. The vibration-resistant discrete device lead frame with a protective structure according to claim 1, characterized in that: The motion disc has a fixing ring groove around its perimeter, and a sealing ring is fitted inside the fixing ring groove.

4. The vibration-resistant discrete device lead frame with protective structure according to claim 3, characterized in that: The outer ring wall of the sealing ring is in contact with the inner wall of the oil cylinder.

5. The vibration-resistant discrete device lead frame with protective structure according to claim 1, characterized in that: One end of the support spring is fitted with a positioning cylinder, and the end of the positioning cylinder away from the support spring is fixedly connected to the bottom of the inner cavity of the oil cylinder.

6. The vibration-resistant discrete device lead frame with protective structure according to claim 1, characterized in that: The moving disc has a positioning groove on the side away from the lead frame body, and one end of the support spring is fixedly connected to the bottom of the positioning groove cavity.

7. The vibration-resistant discrete device lead frame with protective structure according to claim 1, characterized in that: The oil cylinder has a sliding window at one end near the lead frame body, and the support rod extends through the sliding window to the outside of the oil cylinder at the end away from the moving disc.

8. The vibration-resistant discrete device lead frame with protective structure according to claim 1, characterized in that: The fixed platform is fixedly connected to the lead frame body.

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