A leak-proof rubber plug for capacitor and capacitor having the same

Abstract

The utility model discloses a leak-proof rubber plug for a capacitor and a capacitor having the same. The leak-proof rubber plug comprises a rubber plug body, the outer contour of the rubber plug body is adapted to the shape of an electrode lead-out port on a capacitor housing; the rubber plug body is provided with a through hole, the shape of the through hole is adapted to the shape of an electrode lead-out port; the rubber plug body is provided with an opening, the opening extends from the outer edge of the rubber plug body to the through hole to be connected with the through hole. The technical solution of the embodiment of the utility model can improve the production efficiency of the capacitor and ensure the effect of preventing leakage.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitors, in particular to a leakage-proof rubber plug for capacitors and a capacitor having the same. Background Art

[0002] Capacitors are important passive components, among which film capacitors are widely used in electronic equipment, industrial control, automobiles and other fields. Film capacitors are generally composed of capacitor cores, lead electrodes (usually leads, welding pieces or busbars), packaging shells, filling resins and the like. For products where the lead electrodes need to pass through the packaging shell from the side, leakage must be prevented at the place where the lead electrodes and the packaging shell fit. In the current technical solutions, leakage is often prevented by applying glue at the corresponding positions. However, due to the particularity of their structure, many products cannot be automatically glued and require manual glue application, which is not only inefficient, but also the quality of the glue cannot be guaranteed, leading to leakage. Therefore, how to improve the production efficiency of capacitors and ensure the anti-leakage effect has become a technical problem that needs to be solved urgently. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent. To this end, the purpose of the utility model is to provide a leak-proof rubber plug for capacitors and a capacitor having the same, so as to improve the production efficiency of capacitors and ensure the leak-proof effect.

[0004] To achieve the above-mentioned purpose, an embodiment of the utility model proposes a leak-proof rubber plug for a capacitor, comprising a rubber plug body, the outer contour of the rubber plug body is adapted to the shape of the electrode lead-out port on the capacitor housing; the rubber plug body is provided with a through hole, the shape of the through hole is adapted to the shape of the lead-out electrode; the rubber plug body is provided with an opening, the opening extends from the outer edge of the rubber plug body to the through hole so as to be connected with the through hole.

[0005] The anti-leakage rubber plug for capacitors according to the embodiment of the utility model comprises a rubber plug body, the outer contour of which is adapted to the shape of the electrode lead-out port on the capacitor housing, so that the electrode lead-out port can be blocked by the rubber plug body to prevent leakage. The rubber plug body is provided with a through hole, the shape of which is adapted to the shape of the lead-out electrode for placing the lead-out electrode, and the rubber plug body is also provided with an opening, which extends from the outer edge of the rubber plug body to the through hole to be connected with the through hole. Thus, during assembly, the anti-leakage rubber plug can be opened from the opening, and the lead-out electrode can be placed at the through hole from the opened opening. Then the two are placed together at the electrode lead-out port on the capacitor housing, thereby eliminating the need for manual glue application by production personnel, improving the production efficiency of the capacitor, and ensuring the anti-leakage effect.

[0006] In addition, the anti-leakage rubber plug for capacitors proposed in the above embodiment of the utility model may also have the following additional technical features:

[0007] Optionally, two side surfaces and a bottom surface of the plug body are provided with interconnected grooves, and the width of the grooves is adapted to the thickness of the side walls of the capacitor housing.

[0008] Optionally, the width of the plug body gradually decreases from top to bottom.

[0009] Optionally, the opening is opened above the through hole.

[0010] Optionally, the shape of the opening is any one of a straight line, an arc, a curve and a broken line.

[0011] Optionally, the plug body is made of elastic material.

[0012] An embodiment of the utility model further provides a capacitor, which includes the anti-leakage rubber plug for the capacitor as described in any of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a leakage-proof rubber plug for a capacitor according to one embodiment of the utility model;

[0014] Figure 2 for Figure 1 Schematic diagram of the structure from another perspective.

[0015] Description of reference numerals: rubber plug body 100 , through hole 200 , opening 300 , groove 400 . DETAILED DESCRIPTION

[0016] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0017] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0018] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Please refer to Figure 1 and Figure 2 The embodiment of the utility model provides a leak-proof rubber plug for a capacitor, the leak-proof rubber plug includes a rubber plug body 100, the outer contour of the rubber plug body 100 is adapted to the shape of the electrode lead-out port on the capacitor housing, so that it can be well matched with the electrode lead-out port to ensure the leak-proof effect. The rubber plug body 100 can be made of elastic material, such as silicone or rubber.

[0020] In addition, a through hole 200 is provided on the plug body 100, and the shape of the through hole 200 is adapted to the shape of the lead-out electrode for placing the lead-out electrode. It should be noted that the lead-out electrode can be a lead, a welding piece or a busbar. In one example, the through hole 200 and the lead-out electrode are interference-fitted, so that the inner side wall of the through hole 200 can be closely attached to the surface of the lead-out electrode, which can prevent the lead-out electrode from slipping and ensure the effect of preventing leakage.

[0021] The plug body 100 is also provided with an opening 300, which extends from the outer edge of the plug body 100 to the through hole 200 to be connected with the through hole 200. Therefore, during assembly, the production staff can open the anti-leakage plug from the opening 300, and place the lead-out electrode from the opened opening 300 to the through hole 200. Then, the two are placed together at the electrode lead-out port on the capacitor housing, thereby eliminating the need for the production staff to apply glue manually, thereby improving the production efficiency of the capacitor and ensuring the anti-leakage effect.

[0022] In one embodiment, during the production of the leak-proof rubber plug, the production personnel can cut from the outer edge of the plug body 100 to the through hole 200 to form the opening 300. In this way, the gap between the side walls of the formed opening 300 can be smaller, which can not only open the plug body 100, but also prevent the side walls of the opening 300 from bending toward the center of the opening 300 due to external pressure, thereby causing the outer contour shape of the plug body 100 to be inconsistent with the shape of the electrode lead-out port, affecting the leak-proof effect.

[0023] In one embodiment of the utility model, two sides and the bottom surface of the plug body 100 are provided with interconnected grooves 400, and the width of the grooves 400 is adapted to the thickness of the side walls of the capacitor housing. Therefore, after the lead-out electrode and the leak-proof plug are assembled, when the leak-proof plug is installed in the capacitor housing, the grooves 400 can play a guiding role, that is, the production personnel can first align the grooves 400 on both sides with the side walls on both sides of the electrode lead-out port, and then slide the leak-proof plug into the electrode lead-out port from top to bottom, thereby improving the installation efficiency. It should be noted that at this time, the outer contour size of the leak-proof plug should be slightly larger than the inner diameter of the electrode lead-out port, so that the side walls on both sides of the groove 400 can correspond to the edges of the clamping electrode lead-out port to prevent the leak-proof plug from falling out of the electrode lead-out port.

[0024] In one embodiment of the present invention, the width of the plug body 100 gradually decreases from top to bottom, and accordingly, the width of the electrode lead-out port also gradually decreases from top to bottom. Therefore, when the leak-proof plug is installed from top to bottom, the two side edges of the electrode lead-out port can exert a squeezing force on the leak-proof plug, thereby ensuring that the inner wall of the through hole 200 and the lead-out electrode and the two side walls of the opening 300 can fit tightly.

[0025] In one embodiment of the present invention, the opening 300 is disposed above the through hole 200. It should be understood that the opening 300 is disposed above the through hole 200, that is, the opening 300 is at the wider end of the plug body 100. Thus, the structural strength around the opening 300 can be ensured to avoid breakage when the opening 300 is opened.

[0026] In one embodiment, the shape of the opening 300 can be any one of a straight line, an arc, a curve, and a broken line. Those skilled in the art can determine the corresponding shape according to actual implementation needs, and this application does not make any special limitations on this.

[0027] The utility model embodiment also provides a capacitor, which includes a leak-proof rubber plug for a capacitor as described in any of the above embodiments. The leak-proof rubber plug includes a rubber plug body 100, the outer contour of which is adapted to the shape of the electrode lead-out port on the capacitor housing, so that the electrode lead-out port can be blocked by the rubber plug body 100 to prevent leakage. The rubber plug body 100 is provided with a through hole 200, the shape of which is adapted to the shape of the lead-out electrode for placing the lead-out electrode, and the rubber plug body 100 is also provided with an opening 300, which extends from the outer edge of the rubber plug body 100 to the through hole 200 to be connected with the through hole 200. Therefore, during assembly, the leak-proof rubber plug can be opened from the opening 300, and the lead-out electrode can be placed at the through hole 200 from the opened opening 300. Then the two are placed together at the electrode lead-out port on the capacitor housing, thereby eliminating the need for manual glue application by production personnel, improving the production efficiency of the capacitor, and ensuring the effect of preventing leakage.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0031] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A leak-proof rubber plug for a capacitor, characterized in that: It comprises a plug body, the outer contour of which is matched with the shape of the electrode lead-out port on the capacitor housing; the plug body is provided with a through hole, the shape of which is matched with the shape of the lead-out electrode; the plug body is provided with an opening, which extends from the outer edge of the plug body to the through hole to be connected with the through hole.

2. The leak-proof rubber plug according to claim 1, characterized in that: The two side surfaces and the bottom surface of the rubber plug body are provided with interconnected grooves, and the width of the grooves is adapted to the thickness of the side wall of the capacitor housing.

3. The leak-proof rubber plug according to claim 1, characterized in that: The width of the rubber plug body gradually decreases from top to bottom.

4. The leak-proof rubber plug according to claim 3, characterized in that: The opening is arranged above the through hole.

5. The leak-proof rubber plug according to claim 1, characterized in that: The shape of the opening is any one of a straight line, an arc, a curve and a broken line.

6. The leak-proof rubber plug according to claim 1, characterized in that: The rubber plug body is made of elastic material.

7. A capacitor, characterized in that: The invention comprises a leak-proof rubber plug for a capacitor as claimed in any one of claims 1 to 6.

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