Self-contraction clamp based on capacitor
By designing a self-shrinking clamping and clamping buffer mechanism, the difficulties in using capacitor clamps in confined spaces and the challenges in controlling clamping force are solved, achieving stable clamping and protection of capacitors, improving capacitor insertion efficiency and the versatility of the clamps.
Patent Information
- Application Number
- CN202520404828.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-10
AI Technical Summary
Existing capacitor clamps are difficult to use in confined spaces, the clamping force is difficult to control, which can easily lead to deformation and damage of the capacitor surface, and the different shapes and sizes of capacitors require frequent clamp replacements.
A self-shrinking clamp based on a capacitor was designed, comprising a self-shrinking clamping mechanism and a clamping buffer mechanism. The clamping block can automatically adapt to capacitors of different shapes and sizes by utilizing the elastic force of the shrinking spring and the buffer spring.
It improves capacitor insertion efficiency, avoids capacitor damage caused by excessive clamping force, reduces the frequency of clamp replacement when clamping different capacitors, and provides stable clamping and protection.
Smart Images

Figure CN223790464U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of capacitor clamps, and in particular to a self-shrinking clamp for capacitors. Background Technology
[0002] Two conductors placed close together with a non-conductive insulating medium sandwiched in between constitute a capacitor. Capacitors have long been widely used as electronic components. They are elements that can store electric charge and are one of the most commonly used electronic components. Capacitor clamps are needed when installing or replacing capacitors.
[0003] Chinese Utility Model 2 (Announcement No.: CN212635595U) discloses a disassembly clamp for capacitors inside transformers. When disassembling a capacitor in a confined space, the clamp is inserted into the transformer. When the three grippers contact the outer wall of the capacitor, the inner wall of the grippers is an outwardly inclined slope. Further pressing of the clamp causes the three grippers to move in opposite directions, stretching the tension spring. Then, a limiting rod is pressed down, causing a limiting sleeve to contact the three grippers, ensuring the grippers are firmly against the outer wall of the capacitor, allowing the capacitor to be removed.
[0004] At least the following problems were found in this technology: The aforementioned patent uses a pressing clamp to make the three jaws move in opposite directions, and then a limiting rod is pressed down. The limiting rod then presses the limiting sleeve against the three jaws, making the three jaws press tightly against the outer wall of the capacitor, and then the capacitor is removed. However, in actual use, capacitors, as electronic components, are relatively fragile. The aforementioned patent uses a limiting rod to press the limiting sleeve against the three jaws, making the three jaws press tightly against the outer wall of the capacitor. The clamping force is difficult to control, and it is easy to clamp too tightly, causing deformation and damage to the capacitor surface. Therefore, a self-shrinking clamp for capacitors is now proposed. Utility Model Content
[0005] To address the problem that the aforementioned clamps cannot be used in confined installation spaces, thus increasing the difficulty of plugging in capacitors, this invention provides a self-shrinking clamp for capacitors.
[0006] This utility model provides a self-shrinking clamp for capacitors, employing the following technical solution:
[0007] A self-retracting clamp for capacitors includes a clamp body, and a self-retracting clamping mechanism and a clamping buffer mechanism located at the bottom of the clamp body.
[0008] The self-retracting clamping mechanism includes a connecting block, with clamping blocks hinged to the left and right sides of the connecting block, a third connecting rod hinged to the middle of the two sets of clamping blocks, a second connecting rod hinged to the other end of the third connecting rod, a retraction spring fixedly connected to one side of the second connecting rod, a first connecting rod passing through the inside of the retraction spring, and a pressing block fixedly connected to the top of the first connecting rod.
[0009] The clamping and buffering mechanism includes a telescopic rod base, which is fixedly installed inside the clamping block. A buffer spring is fixedly installed inside the telescopic rod base. The other end of the buffer spring is connected to a telescopic rod, and the other end of the telescopic rod is fixedly connected to a buffer rod. A rubber ball is fixed to the top of the buffer rod.
[0010] By adopting the above technical solution, the insertion of capacitors can be greatly accelerated. At the same time, it improves the problem that capacitor clamps need to be changed when performing different capacitor clamping processes due to the different shapes and sizes of capacitors, which is very troublesome.
[0011] As a further embodiment of this invention, a clamp handle is fixedly installed on the top of the clamp body.
[0012] By adopting the above technical solution, the clamp handle makes it easier for users to grip the clamp body.
[0013] As a further embodiment of this utility model, a fixing block and a fixing rod are fixedly installed at the bottom of the clamp body.
[0014] By adopting the above technical solution, the fixing block and fixing rod are used to fix the connecting block.
[0015] As a further embodiment of this utility model, one end of the contraction spring is fixedly connected to the second connecting rod, and the other end of the contraction spring is fixedly connected to the fixing rod.
[0016] By adopting the above technical solution, the second connecting rod moves upward under the elastic force of the contraction spring, thereby causing the clamping block to contract and clamp the capacitor.
[0017] As a further embodiment of this invention, the first connecting rod extends through the interior of the clamp body.
[0018] By adopting the above technical solution, when using it, you can grasp the handle of the clamp by hand and press the pressing block to drive the first connecting rod to move down.
[0019] As a further embodiment of this utility model, the telescopic rod forms an elastic telescopic structure with the base of the telescopic rod via a buffer spring.
[0020] By adopting the above technical solution, the capacitor can be stably clamped by utilizing the elastic force of the buffer spring in conjunction with the clamping block.
[0021] As a further embodiment of this invention, the fixing rod and the connecting block are fixedly connected.
[0022] By adopting the above technical solution, the fixing rod is used to fix the connecting block.
[0023] As a further embodiment of this invention, the first connecting rod passes through the interior of the contraction spring.
[0024] By adopting the above technical solution, the first connecting rod is used to connect the pressing block and the second connecting rod. In summary, this utility model has the following beneficial effects:
[0025] 1. This utility model features a self-retracting clamping mechanism. When in use, the user grasps the clamp handle, presses the pressing block to move the first connecting rod downwards, which in turn stretches the retraction spring and moves the second connecting rod downwards, causing the clamping block to open. The clamping block can then be pressed against the outer wall of the capacitor. Releasing the pressing block causes the second connecting rod to move upwards under the elastic force of the retraction spring, thus retracting the clamping block and clamping the capacitor. This design significantly speeds up capacitor insertion and improves upon the problem of needing to change clamps for different capacitors due to varying shapes and sizes, which is very inconvenient.
[0026] 2. This utility model, through its clamping and buffering mechanism, causes the clamping block to press inward against the buffer rod when it contacts the capacitor. At this time, the buffer rod presses inward against the telescopic rod, which in turn causes the telescopic rod to retract into the base of the telescopic rod. Simultaneously, the buffer spring generates an outward elastic force. The elastic force of the buffer spring, in conjunction with the clamping block, can stably clamp the capacitor, thereby preventing the workpiece from falling. The rubber ball also protects the capacitor, preventing the clamping force of the clamping block from being too great and damaging the capacitor. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the retraction structure of the clamping block of this utility model.
[0028] Figure 2 This is a schematic diagram of the opening structure of the clamping block of this utility model.
[0029] Figure 3 This is a utility model Figure 1 A magnified structural diagram of part A in the middle.
[0030] Figure 4 This is a schematic diagram of the clamping and buffering mechanism of this utility model.
[0031] Explanation of reference numerals in the attached figures:
[0032] 1. Clamp handle; 2. Fixing block; 3. Fixing rod; 4. Self-retracting clamping mechanism; 401. Pressing block; 402. First connecting rod; 403. Retraction spring; 404. Second connecting rod; 405. Clamping block; 406. Third connecting rod; 407. Connecting block; 5. Clamping buffer mechanism; 501. Rubber ball; 502. Buffer rod; 503. Telescopic rod base; 504. Buffer spring; 505. Telescopic rod; 6. Clamp body. Detailed Implementation
[0033] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.
[0034] Please refer to Figures 1-4 The self-shrinking clamp for capacitors includes a clamp body 6, a self-shrinking clamping mechanism 4 and a clamping buffer mechanism 5 located at the bottom of the clamp body 6, a clamp handle 1 fixedly installed on the top of the clamp body 6, and a fixing block 2 and a fixing rod 3 fixedly installed on the bottom of the clamp body 6.
[0035] Reference Figure 1 and Figure 2 The self-contracting clamping mechanism 4 includes a connecting block 407. Clamping blocks 405 are hinged to the left and right sides of the connecting block 407. A third connecting rod 406 is hinged to the middle of the two sets of clamping blocks 405. A second connecting rod 404 is hinged to the other end of the third connecting rod 406. A retraction spring 403 is fixedly connected to one side of the second connecting rod 404. A first connecting rod 402 passes through the inside of the retraction spring 403. A pressing block 401 is fixedly connected to the top of the first connecting rod 402. One end of the retraction spring 403 is fixedly connected to the second connecting rod 404, and the other end of the retraction spring 403 is fixedly connected to the fixed rod 3. The first connecting rod 402 passes through the inside of the clamp body 6. The fixed rod 3 is fixedly connected to the connecting block 407. The clamping block 405 is inserted inside the retraction spring 403. Through the self-retracting clamping mechanism 4, when in use, the clamp handle 1 is grasped by hand, and the pressing block 401 is pressed, causing the first connecting rod 402 to move downwards. This, in turn, stretches the retraction spring 403 and causes the second connecting rod 404 to move downwards, thus opening the clamping block 405. At this point, the clamping block 405 can be pressed against the outer wall of the capacitor. Releasing the pressing block 401, under the elastic force of the retraction spring 403, causes the second connecting rod 404 to move upwards, thus retracting the clamping block 405 and clamping the capacitor. This design greatly speeds up capacitor insertion and improves upon the problem of needing to change different clamps when handling different capacitors due to their varying shapes and sizes, which is very troublesome.
[0036] Reference Figure 3 and Figure 4 The clamping and buffering mechanism 5 includes a telescopic rod base 503, which is fixedly installed inside the clamping block 405. A buffer spring 504 is fixedly installed inside the telescopic rod base 503. The other end of the buffer spring 504 is connected to a telescopic rod 505, and the other end of the telescopic rod 505 is fixedly connected to a buffer rod 502. A rubber ball 501 is fixed to the top of the buffer rod 502. The telescopic rod 505 forms an elastic telescopic structure with the buffer spring 504 and the telescopic rod base 503. Through the provided clamping and buffering mechanism... 5. When the clamping block 405 contacts the capacitor, it will press the buffer rod 502 inward. At this time, the buffer rod 502 will press the telescopic rod 505 inward, which will cause the telescopic rod 505 to retract into the telescopic rod base 503. At the same time, the buffer spring 504 generates an outward elastic force. The elastic force of the buffer spring 504, together with the clamping block 405, can stably clamp the capacitor, thereby preventing the workpiece from falling. The rubber ball 501 provided can protect the capacitor and prevent the clamping force of the clamping block 405 from being too large and damaging the capacitor.
[0037] The implementation principle of this utility model is as follows: When using this self-retracting clamp for capacitors, the self-retracting clamping mechanism 4 allows for easy operation. By grasping the clamp handle 1 and pressing the pressing block 401, the first connecting rod 402 moves downward, causing the contraction spring 403 to stretch and the second connecting rod 404 to move downward, thus opening the clamping block 405. When the clamping block 405 is pressed against the outer wall of the capacitor, releasing the pressing block 401 causes the second connecting rod 404 to move upward under the elastic force of the contraction spring 403, thereby retracting the clamping block 405 and clamping the capacitor. This design significantly speeds up capacitor insertion and improves the handling of capacitors with different shapes and sizes. This necessitates changing the capacitor clamp for different capacitor clamping processes, which is very troublesome. The clamping buffer mechanism 5 addresses this by pressing the buffer rod 502 inward when the clamping block 405 contacts the capacitor. The buffer rod 502 then presses the telescopic rod 505 inward, causing the telescopic rod 505 to retract into the telescopic rod base 503. Simultaneously, the buffer spring 504 generates an outward elastic force. This elastic force, combined with the clamping block 405, allows for stable clamping of the capacitor, preventing the workpiece from falling. The rubber ball 501 further protects the capacitor, preventing excessive clamping force from damaging it.
[0038] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.
Claims
1. A self-retracting clamp for use with capacitors, characterized by, The utility model provides a kind of clamp, including the clamp body (6), and the self-retraction clamping mechanism (4) and the clamping buffer mechanism (5) at the bottom of clamp body (6); The self-retraction clamping mechanism (4) includes connecting block (407), the left and right sides of the connecting block (407) are hinged with clamping block (405), the middle part of two groups of clamping block (405) is hinged with third connecting rod (406), the other end of the third connecting rod (406) is hinged with second connecting rod (404), one side of the second connecting rod (404) is fixedly connected with retraction spring (403), the inside of the retraction spring (403) is provided with first connecting rod (402), the top of the first connecting rod (402) is fixedly connected with pressing block (401); The clamping buffer mechanism (5) includes telescopic rod base (503), the inside of the telescopic rod base (503) is fixedly installed with buffer spring (504), the other end of the buffer spring (504) is connected with telescopic rod (505), the other end of the telescopic rod (505) is fixedly connected with buffer rod (502), the top of the buffer rod (502) is fixed with rubber ball (501).
2. The self-shrinking clamp for capacitors according to claim 1, wherein The top of the clamp body (6) is fixedly installed with clamp handle (1).
3. The self-shrinking clamp for capacitors according to claim 2, wherein The bottom of the clamp body (6) is fixedly installed with fixed block (2) and fixed rod (3).
4. The self-shrinking clamp for capacitors according to claim 3, wherein One end of the retraction spring (403) and the second connecting rod (404) are fixedly connected, and the other end of the retraction spring (403) and the fixed rod (3) are fixedly connected.
5. The self-shrinking clamp for capacitors of claim 1, wherein, The first connecting rod (402) penetrates the inside of the clamp body (6).
6. The self-shrinking clamp for capacitors of claim 1, wherein, The telescopic rod (505) and the telescopic rod base (503) constitute an elastic telescopic structure through the buffer spring (504).
7. The self-shrinking clamp for capacitors of claim 3, wherein The fixed rod (3) and the connecting block (407) are fixedly connected.
8. The self-shrinking clamp for capacitors of claim 1, wherein, The first connecting rod (402) penetrates the inside of the retraction spring (403).
Citation Information
Patent Citations
Dismounting clamp for capacitor in transformer
CN212635595U