Capacitor with insulating positioning

Abstract

The utility model relates to a capacitor with insulation positioning, including casing, the cover plate of cover combination casing open end and the core body of accommodation in casing, still include: the upper cage, surround setting between casing and core body, the upper cage includes the even distribution of multiple groups upper clamping piece in the circumference, one end of upper clamping piece is connected in casing outer wall, the other end extends to the inside side and forms the clearance between with casing, the press ring, set up in the cover plate bottom, the press ring is configured as when cover plate covers combination on casing inserts the clearance and compels the upper cage free end to bend to the core body direction with the upper cage initiative to gather and clamp the core body. The utility model adopts "cover plate - press ring - upper cage" linkage structure, and cover plate can drive the press ring to trigger the upper cage initiative to clamp when covering combination, and the lower cage is automatically completed passive clamping when the core body is loaded, and it is not necessary to additional fastener or manual adjustment step, and each component forms fixation and sealing through the assembly action naturally, and the assembly process is greatly reduced.

Description

Technical Field

[0001] This utility model belongs to the field of capacitor technology, and specifically relates to a capacitor with insulating positioning. Background Technology

[0002] As a core component in electronic circuits that enables energy storage, filtering, and coupling, capacitors are widely used in fields such as industrial control, new energy, and consumer electronics.

[0003] Traditional capacitors typically fix the core by bolting, snap-fitting, or filling with buffer material. This requires multiple separate processes, such as "core positioning, fastener installation, and sealing inspection," which are cumbersome and time-consuming. Some solutions use a single clamping structure, which requires manual adjustment of the clamping force. This can easily lead to inconsistent core fixation due to differences in operation, affecting the quality of mass production. Utility Model Content

[0004] This utility model addresses the problems of the prior art by providing a capacitor with insulating positioning. The specific technical solution is as follows: A capacitor with insulating positioning includes a housing, a cover plate that closes to the opening of the housing, and a core housed within the housing, and further includes: An upper cage frame is arranged around the shell and the core. The upper cage frame includes multiple sets of upper clamping pieces evenly distributed in the circumferential direction. One end of each upper clamping piece is connected to the outer wall of the shell, and the other end extends inward at an inward angle to form a gap with the shell. A pressure ring is provided at the bottom of the cover plate. The pressure ring is configured to be inserted into the gap when the cover plate is closed on the shell and to press the free end of the upper cage frame to bend towards the core body so that the upper cage frame actively tightens and clamps the core body.

[0005] As a further technical solution of this utility model, a lower cage frame is also provided between the shell and the core. The lower cage frame includes multiple sets of lower clamping pieces evenly arranged in the circumferential direction. One end of the lower clamping piece is connected to the outer wall of the shell, and the other end extends inward at an inclination. When the core is inserted, the free end of the lower clamping piece is compressed and deformed outward, and after the core passes through, it is pressed on the surface of the core to form a passive constriction and clamping of the core.

[0006] As a further technical solution of this utility model, the opening direction of the upper cage frame is opposite to the opening direction of the lower cage frame.

[0007] As a further technical solution of this utility model, the inner surface of the cover plate has a raised gasket ring, and the bottom of the housing is provided with a base. The base and the gasket ring cooperate to form a gap that prevents the core from contacting the housing and the cover plate.

[0008] As a further technical solution of this utility model, both the upper and lower clamping pieces are made of insulating materials with elastic deformation characteristics.

[0009] The beneficial effects of this utility model are as follows: The system adopts a linkage structure of "cover plate-pressure ring-upper cage". When the cover plate is closed, it can simultaneously drive the pressure ring to trigger the upper cage to actively clamp. The lower cage automatically completes passive clamping when the core is installed. No additional fasteners or manual adjustment steps are required. Each component naturally forms a fixed and sealed structure through assembly, which greatly reduces assembly steps and improves production efficiency.

[0010] The upper and lower cages adopt a clamping structure with uniformly distributed clamping plates in the circumference and opposite opening directions. This can form a counterbalancing clamping force from the upper and lower parts of the core, effectively counteracting the displacement tendency of the core during vibration, transportation, or use, and preventing the core from shifting or moving. At the same time, the uniformly distributed clamping force in the circumference keeps the core in the center of the shell, preventing the core from making local contact with the inner wall of the shell and ensuring the stability of the capacitor's electrical performance.

[0011] The spacer formed by the cover plate gasket and the housing base effectively prevents the core from directly contacting the metal housing, avoiding short circuit faults caused by wear of the core insulation layer; at the same time, the space reserved in the spacer can guide air circulation, helping the heat generated by the core during operation to dissipate quickly, reducing heat accumulation and extending the service life of the capacitor.

[0012] The upper and lower clamps are made of insulating material with elastic deformation properties. The elasticity allows the clamps to adapt to cores with different size deviations, improving product compatibility, and the clamping force is not easily weakened after long-term use. The insulation properties eliminate electrical safety hazards caused by the conductivity of the clamps from the source. At the same time, the temperature-resistant material can adapt to the working temperature environment of the core, further ensuring safety in use. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall structure of a capacitor with insulating positioning is shown; Figure 2 A schematic diagram of the internal structure of a capacitor with insulating positioning is shown; Figure 3 An exploded view of a capacitor with insulating positioning is shown.

[0014] Legend: 100, Shell; 110, Base; 200, Cover plate; 210, Washer ring; 300, Core; 400, Upper cage frame; 410, Upper clamping plate; 500, Pressure ring; 600, Lower cage frame; 610, Lower clamping plate. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0016] Figures 1-3 The capacitor with insulating positioning includes a housing 100, a cover plate 200 covering the opening of the housing 100, and a core 300 housed within the housing 100, and further includes: The upper cage 400 is arranged around the shell 100 and the core 300. The upper cage 400 includes multiple sets of upper clamping pieces 410 evenly arranged in the circumferential direction. One end of the upper clamping piece 410 is connected to the outer wall of the shell 100, and the other end extends inward at an inward angle and forms a gap with the shell 100. A pressure ring 500 is provided at the bottom of the cover plate 200. The pressure ring 500 is configured to be inserted into the gap when the cover plate 200 is closed on the housing 100 and to press the free end of the upper cage 400 to bend toward the core 300 so that the upper cage 400 actively contracts and clamps the core 300.

[0017] The housing 100 serves as the external supporting frame of the capacitor, and its internal cavity provides installation space for the core 300. The core 300, as the core component for energy storage, needs to be stably placed inside the housing 100. The cover plate 200 closes the opening of the housing 100, preventing external dust and moisture from entering and affecting the performance of the core 300, and also providing a mounting base for the pressure ring 500. The upper cage 400 is arranged around the housing 100 and the core 300. Initially, the inclined structure of the upper clamping plate 410 provides preliminary positioning for the core 300. The integrated design of the pressure ring 500 and the cover plate 200 allows the closing action of the cover plate 200 to simultaneously drive the pressure ring 500 to act on the upper cage 400. The advantage of this structural design is that the components are linked together through assembly, and the initial fixation of the core 300 and the sealing of the shell 100 can be completed without additional operations. This simplifies the assembly process and ensures the installation stability of the core components, preventing the core 300 from initially shifting within the shell 100.

[0018] The upper clamping plates 410 of the upper cage 400 are evenly distributed circumferentially to ensure balanced force around the core 300. The fixed connection of one end to the outer wall of the shell 100 provides a force fulcrum for the clamping action, while the gap formed by the inward inclination of the other end provides space for the insertion of the pressure ring 500. When the cover plate 200 is closed on the shell 100, the pressure ring 500 moves down with the cover plate 200 and is inserted into the aforementioned gap. As the cover plate 200 continues to close, the pressure ring 500 exerts a squeezing force on the free end of the upper cage 400 towards the core 300, forcing the upper clamping plates 410 to bend elastically until the inner wall of the upper clamping plates 410 is tightly attached to the outer wall of the core 300, forming an active contraction clamping effect. The advantage of this active clamping method is that the clamping force is directly transmitted by the closing action of the cover plate 200, without the need for additional fasteners. This reduces the number of parts and allows for precise control of the clamping force through the insertion depth of the pressure ring 500, preventing damage to the core 300 due to excessive clamping force or loosening of the core 300 due to insufficient clamping force. At the same time, the circumferentially uniform clamping force keeps the core 300 in the center position of the housing 100, avoiding local contact between the core 300 and the inner wall of the housing 100, thus ensuring the stability of the capacitor's electrical performance.

[0019] A lower cage 600 is also provided between the shell 100 and the core 300. The lower cage 600 includes multiple sets of lower clamping plates 610 evenly distributed in the circumferential direction. One end of the lower clamping plate 610 is connected to the outer wall of the shell 100, and the other end extends inward at an inclination. When the core 300 is inserted, the free end of the lower clamping plate 610 is compressed and deformed outward. After the core 300 passes through, it is pressed against the surface of the core 300 to form a passive clamping of the core 300.

[0020] The working logic of the lower cage 600 complements that of the upper cage 400. Its lower clamping plates 610 are also evenly distributed circumferentially to ensure balanced force distribution on the lower part of the core 300. During the process of the core 300 being inserted into the shell 100, the bottom of the core 300 first contacts the inclined free end of the lower clamping plate 610. As the core 300 continues to move downwards, the outer wall of the core 300 exerts an outward squeezing force on the free end of the lower clamping plate 610, causing the lower clamping plate 610 to elastically expand outwards, providing space for the core 300 to pass through. When the core 300 is fully inserted and passes the free end of the lower clamping plate 610, the lower clamping plate 610 loses the outward expansion force of the core 300 and resets under its own elasticity, its inner wall tightly adhering to the outer wall of the core 300, forming a passive constriction and clamping effect. The advantage of this passive clamping design is that it can automatically complete the lower part fixation during the assembly of the core 300 without additional operation, further simplifying the assembly process. At the same time, the lower cage 600 and the upper cage 400 clamp the core 300 from the upper and lower parts respectively, making the core 300 more fully fixed in the housing 100 and preventing the core 300 from shifting due to uneven force on the upper and lower parts. In addition, the elastic outward expansion characteristic of the lower clamp 610 can also adapt to cores 300 with different size deviations, improving product compatibility.

[0021] The opening direction of the upper cage frame 400 is opposite to that of the lower cage frame 600.

[0022] The upper cage 400 and lower cage 600 have opposite opening directions, meaning the upper clamping plate 410 and lower clamping plate 610 are tilted in opposite directions. For example, the upper clamping plate 410 tilts upward and the lower clamping plate 610 tilts downward. This reverse design creates a counterbalancing effect between the clamping forces exerted by the two clamping plates on the core 300. When the upper cage 400 exerts a downward clamping force on the core 300 through the pressure ring 500, the lower cage 600 exerts an upward clamping force on the core 300. The interaction of these two opposing forces stably "locks" the core 300 in a fixed position inside the housing 100. The advantage of this design is that the opposing clamping forces effectively counteract the vertical displacement tendency of the core 300 during vibration, transportation, or use, preventing the core 300 from colliding and wearing with the cover plate 200 or the bottom of the housing 100. At the same time, the balancing effect of the opposing forces also reduces stress concentration inside the core 300, protecting the internal structural integrity of the core 300 and extending the service life of the capacitor.

[0023] The inner surface of the cover plate 200 has a raised gasket 210, and the bottom of the housing 100 is provided with a base 110. The base 110 and the gasket 210 cooperate to form a gap that prevents the core 300 from contacting the housing 100 and the cover plate 200.

[0024] The gasket 210 protrudes from the inner surface of the cover plate 200. When the cover plate 200 is closed, the lower end face of the gasket 210 forms a flexible contact with the upper end face of the core 300. The gasket 210 is made of insulating elastic material. The base 110 is set at the bottom of the housing 100, and its upper end face supports the lower end face of the core 300. The two work together to maintain a preset distance between the core 300 and the inner wall of the housing 100 and the inner surface of the cover plate 200, forming a gap. The core function of this spacer is to prevent the core 300 from directly contacting the metal housing 100 and cover plate 200. On the one hand, it can prevent the insulation layer of the outer wall of the core 300 from being damaged by friction with the housing 100 due to assembly or vibration, which would cause a short circuit between the core 300 and the housing 100. On the other hand, the spacer can provide a certain amount of heat dissipation space for the core 300, preventing the heat generated by the core 300 during operation from being directly transferred to the housing 100 and accumulating thereafter, thus improving the heat dissipation efficiency of the capacitor. In addition, the cooperation between the gasket ring 210 and the base 110 can also provide vertical positioning for the core 300, further assisting the upper and lower cages in fixing the core 300 and improving the overall structural stability.

[0025] Both the upper clip 410 and the lower clip 610 are insulating materials with elastic deformation characteristics.

[0026] The elastic deformation characteristics of the upper clamp 410 and lower clamp 610 are key to achieving the clamping function. When pressed by the pressure ring 500 or squeezed by the core 300, the clamps can undergo controllable elastic deformation, ensuring that the core 300 is smoothly assembled or clamped. When the external force disappears, the clamps can return to their original shape due to elasticity, continuously maintaining the clamping force on the core 300. Even with long-term use or vibration, the clamping force can be prevented from decaying. The choice of insulation material is the core of ensuring the electrical safety of the capacitor. Since the core 300 carries a charge when working, if the clamps are made of conductive material, it may cause the core 300 and the shell 100 to form a conductive path through the clamps, leading to a short circuit fault. The insulation material can effectively block this conductive risk, ensuring the independent and stable electrical performance of the core 300. The advantages of this material selection are that its elastic properties ensure the reliability and durability of the clamping function, preventing the core 300 from loosening due to clamp deformation failure; its insulation properties fundamentally eliminate electrical safety hazards caused by the clamps, and the insulation material usually has a certain temperature resistance, which can adapt to the temperature environment when the core 300 is working, further improving the safety and lifespan of the capacitor.

[0027] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A capacitor with insulating positioning, comprising a housing (100), a cover plate (200) covering the open end of the housing (100), and a core (300) housed within the housing (100), characterized in that, Also includes: The upper cage frame (400) is arranged around the shell (100) and the core (300). The upper cage frame (400) includes multiple sets of upper clamping pieces (410) evenly arranged in the circumferential direction. One end of the upper clamping piece (410) is connected to the outer wall of the shell (100), and the other end extends inward at an inward angle to form a gap with the shell (100). A pressure ring (500) is provided at the bottom of the cover plate (200). The pressure ring (500) is configured to be inserted into the gap when the cover plate (200) is closed on the housing (100) and to press the free end of the upper cage (400) to bend toward the core (300) so that the upper cage (400) actively tightens and clamps the core (300).

2. The capacitor with insulating positioning according to claim 1, characterized in that: A lower cage (600) is also provided between the shell (100) and the core (300). The lower cage (600) includes multiple sets of lower clamping pieces (610) evenly arranged in the circumferential direction. One end of the lower clamping piece (610) is connected to the outer wall of the shell (100), and the other end extends inward at an inclination. When the core (300) is inserted, the free end of the lower clamping piece (610) is compressed and deformed outward. After the core (300) passes through, it is pressed on the surface of the core (300) to form a passive clamping of the core (300).

3. The capacitor with insulating positioning according to claim 2, characterized in that: The opening direction of the upper cage (400) is opposite to the opening direction of the lower cage (600).

4. The capacitor with insulating positioning according to claim 3, characterized in that: The inner surface of the cover plate (200) has a raised gasket (210), and the bottom of the housing (100) is provided with a base (110). The base (110) and the gasket (210) cooperate to form a gap that prevents the core (300) from contacting the housing (100) and the cover plate (200).

5. The capacitor with insulating positioning according to claim 3, characterized in that: Both the upper clip (410) and the lower clip (610) are made of insulating material with elastic deformation characteristics.

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