Sealing waterproof structure for capacitor

Abstract

The utility model relates to the field of capacitors, and discloses a sealing waterproof structure for a capacitor and a columnar lead applied to the capacitor, the sealing waterproof structure comprises an end cover and a pipeline, the columnar lead penetrates through the end cover and is in sliding fit with the end cover, a groove is formed in the end face, close to the capacitor, of the end cover, and the pipeline is arranged in the groove. The pipeline is arranged between the end cover and the capacitor, the pipeline is connected to the capacitor, the columnar wire penetrates through the pipeline, a spring is connected between the end face of the pipeline and the bottom face of the groove, and a baffle surrounding the columnar wire is vertically connected to the bottom face of the groove. Liquid can be prevented from being directly sputtered to the connecting position of the columnar wire and the target element to achieve the basic waterproof effect, the groove design in the end cover can prevent the liquid from flowing out of the end cover, it is ensured that the end cover is tightly attached to the target element all the time through the spring, and the waterproof effect is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of capacitor, especially a sealing waterproof structure for capacitor. BACKGROUND

[0002] As a common electronic component, the function of capacitor is mainly to store electric charge, filter and stabilize circuit. The manufacturing technology of modern capacitor can realize the waterproof performance of capacitor body, so that it can still maintain stable working state in humid or liquid environment. However, when the capacitor is actually connected to the circuit board, the connection between the wire end and the circuit board welding point usually becomes the weak link of the waterproof performance of the whole circuit;

[0003] In the prior art, the welding point of the wire of the capacitor and the circuit board is usually fixed by using traditional soldering process. Although this method can ensure the reliability of electrical connection, it is insufficient in waterproof performance. Once the capacitor is splashed by liquid, the liquid will directly splash to the connection between the wire and the circuit board, or after the liquid falls on the surface of the capacitor, the liquid will drip to the connection between the capacitor and the circuit board along the surface of the capacitor or the wire under the influence of gravity, thereby causing corrosion, short circuit or other electrical performance problems of the welding point. This situation not only affects the stable operation of the electronic equipment, but also may threaten the service life and safety of the whole system. SUMMARY

[0004] The utility model aims at providing a sealing waterproof structure for capacitor to solve the problem that the connection between the existing capacitor and the circuit board lacks waterproof design, the liquid will directly splash to the connection between the wire and the circuit board, or the liquid will drip to the connection between the capacitor and the circuit board after falling on the surface of the capacitor, thereby causing corrosion, short circuit or other electrical performance problems of the welding point. The specific technical scheme is as follows:

[0005] A sealing waterproof structure for capacitor applied to the columnar wire of the capacitor, comprising an end cover and a pipeline, the columnar wire penetrates through the end cover and is in sliding fit with the end cover, the end cover is provided with a groove on the end face close to the capacitor, the pipeline is arranged between the end cover and the capacitor, the pipeline is connected to the capacitor, the columnar wire passes through the pipeline, a spring is connected between the end face of the pipeline and the bottom face of the groove, and a baffle arranged around the columnar wire is vertically connected to the bottom face of the groove.

[0006] As one of the improvements of the above technical scheme, the end cover is provided with an opening for mounting the columnar wire, and a rubber ring is arranged on the inner wall of the opening, and the columnar wire passes through the rubber ring.

[0007] As one of the improvements of the above technical solutions, the opposite ends of the spring are connected to the end face of the pipeline and the bottom face of the groove respectively, and the spring is arranged in the baffle.

[0008] As one of the improvements of the above technical solutions, the groove area of the groove is larger than the bottom face area of the capacitor, and the groove can accommodate the bottom of the capacitor.

[0009] As one of the improvements of the above technical solutions, the capacitor is a cylinder, the groove is circular, and the radius of the groove is 2mm longer than the end face radius of the capacitor.

[0010] As one of the improvements of the above technical solutions, the bottom edge of the end cover is connected with an adhesive tape.

[0011] As one of the improvements of the above technical solutions, an inclined face is formed by cutting between the inner wall of the pipeline end and the outer wall of the pipeline end, and the sharp end of the inclined face is arranged above the outer side of the baffle.

[0012] The beneficial effects of the utility model are as follows: the end cover is arranged to prevent liquid from directly splashing to the connection between the columnar conductor and the target element, the groove on the end cover prevents liquid from flowing out of the end cover, the spring ensures that the end cover is always close to the target element, and the waterproof effect is enhanced.

[0013] Some of the additional aspects and advantages of the utility model will be given in the following description, some will become obvious from the following description, or will be understood through the practice of the utility model, of course, the implementation of any product or method of the present application does not necessarily need to achieve all the advantages mentioned above. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0015] Figure 1 It is the structural schematic diagram of the capacitor of the utility model.

[0016] Figure 2 It is the structural schematic diagram of the end cover of the utility model.

[0017] Figure 3 It is the structural schematic diagram of the pipeline of the utility model.

[0018] Figure 4 It is the structural schematic diagram of the opening of the utility model.

[0019] In the figure: 1, capacitor; 2, columnar lead; 3, end cover; 4, pipeline; 5, baffle; 6, spring; 7, adhesive tape; 31, groove; 32, opening; 33, rubber ring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0021] Reference to“an embodiment” or“the embodiment” in this text means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase that the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of other embodiments. It is explicitly understood that the embodiments described herein can be combined with other embodiments.

[0022] Please refer to Figures 1-4 In the embodiments of the present application, the sealing waterproof structure for the capacitor mainly applies to the columnar lead 2 of the capacitor 1. Specifically, the capacitor 1 applied in the present embodiment usually has two columnar leads 2, and the two columnar leads 2 are connected to the same end surface of the capacitor 1. The sealing waterproof structure comprises an end cover 3, and the columnar lead 2 penetrates through the end cover 3 and is in sliding fit with the end cover 3. In use, the end cover 3 is first lifted along the length direction of the columnar lead 2 to expose the end of the columnar lead 2, and then the end of the columnar lead 2 is connected to a target element, such as a circuit board. After the columnar lead 2 is connected to the target element, the end cover 3 is released, and the end cover 3 directly falls on the target element and covers the connection between the columnar lead 2 and the target element. The above design can achieve basic waterproof effect.

[0023] Since the liquid can flow, the liquid can still flow out of the end cover 3 and drip onto the target element, and therefore, the utility model also provides some embodiments, specifically, the end cover 3 is provided with a groove 31 on the end face close to the capacitor 1, the design of the groove 31 can prevent the liquid from flowing out of the end cover 3, preferably, the area of the groove 31 is greater than the bottom area of the capacitor 1, and the groove 31 can accommodate the bottom of the capacitor 1, for example, when the capacitor 1 is a cylinder, the groove 31 is also circular, and the radius of the groove 31 is at least 2mm longer than the end face radius of the capacitor 1, by using the above design, it can be ensured that the liquid splashed onto the surface of the capacitor 1 will be directly collected by the groove 31 of the end cover 3 when dripping, it can be understood that if the area of the groove 31 is greater than the bottom area of the capacitor 1, the liquid flowing along the surface of the capacitor 1 can only finally drip into the groove 31;

[0024] Considering that the liquid still has the risk of contacting the columnar lead 2 when flowing along the surface of the capacitor 1, the utility model also provides some embodiments, specifically, a pipeline 4 is further included, the pipeline 4 is arranged between the end cover 3 and the capacitor 1, the pipeline 4 is connected to the capacitor 1, and the columnar lead 2 passes through the pipeline 4, by arranging the pipeline 4, the liquid cannot contact the columnar lead 2;

[0025] In some embodiments, a spring 6 is connected between the end face of the pipeline 4 and the bottom face of the groove 31, a baffle 5 surrounding the columnar lead 2 is vertically connected to the bottom face of the groove 31, the end cover 3 is provided with an opening 32 for mounting the columnar lead 2, a rubber ring 33 is arranged on the inner wall of the opening 32, the columnar lead 2 passes through the rubber ring 33, the opposite ends of the spring 6 are respectively connected to the end face of the pipeline 4 and the bottom face of the groove 31, and the spring 6 is arranged in the baffle 5; it can be understood that in order to ensure that the end cover 3 can tightly adhere to the target element, therefore, the spring 6 is used to push the end cover 3 in this embodiment, so that the end cover 3 can abut against the surface of the target element, the spring 6 is used to ensure that the end cover 3 is always tightly adhered to the target element, which can achieve a certain waterproof effect, on this basis, the adhesive tape 7 can be further connected to the bottom edge of the end cover 3, and the waterproof effect is strengthened, and the baffle 5 can prevent the liquid dripping into the groove 31 from flowing into the opening 32.

[0026] It should be noted that the terms "first", "second" and the like in the specification only serve the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features.

[0027] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A sealed waterproof structure for a capacitor, applied to a columnar lead wire of the capacitor, characterized by, The cylindrical lead wire penetrates through the end cover and is in sliding fit with the end cover, the end cover is provided with a groove on the end face close to the capacitor, the pipe is arranged between the end cover and the capacitor, the pipe is connected to the capacitor, the cylindrical lead wire penetrates through the pipe, a spring is connected between the end face of the pipe and the bottom face of the groove, and a baffle is vertically connected to the bottom face of the groove and is arranged around the cylindrical lead wire.

2. A sealed, waterproof structure for a capacitor as defined in claim 1, wherein: The end cover is provided with an opening for mounting the cylindrical lead wire, and a rubber ring is arranged on the inner wall of the opening.

3. A sealed, waterproof structure for a capacitor as defined in claim 1, wherein: The opposite ends of the spring are respectively connected to the end face of the pipe and the bottom face of the groove, and the spring is arranged in the baffle.

4. A sealed, waterproof structure for a capacitor as defined in claim 1, wherein: The groove area is greater than the bottom area of the capacitor, and the groove can accommodate the bottom of the capacitor.

5. A sealed, waterproof structure for a capacitor as defined in claim 4, wherein: The capacitor is a cylinder, the groove is circular, and the radius of the groove is 2mm longer than the radius of the end face of the capacitor.

6. A sealed, waterproof structure for a capacitor as defined in claim 5, wherein: The bottom edge of the end cover is connected with an adhesive tape.

7. A sealed, waterproof structure for a capacitor as defined in claim 1, wherein: An inclined face is formed by cutting between the inner wall of the end of the pipe and the outer wall of the end of the pipe, and the sharp end of the inclined face is arranged above the outer side of the baffle.

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