End cover for thin film capacitor

Abstract

The utility model relates to an end cover for a film capacitor, which comprises a cover plate matched with a capacitor body, two sides of the bottom of the cover plate extend in a first direction to form fixed insertion plates, movable through holes are arranged on the fixed insertion plates, movable blocks are inserted in the movable through holes in a second direction, one ends of the movable blocks are connected in the movable through holes through elastic pieces, and the other ends of the movable blocks are connected in the capacitor body through elastic pieces. The top of the capacitor body is provided with an insertion groove matched with the fixed insertion plate, the insertion groove is provided with a fixed groove matched with the movable block in the second direction, the movable block is connected with a rope body, in the non-stress state, part of the outer side of the movable block is pushed to the outer side of the fixed insertion plate through the elastic piece, and when the movable block is pulled by the rope body, the movable block is pulled out of the fixed insertion plate through the elastic piece. According to the utility model, the cover plate can be rapidly and stably connected to the capacitor body, when the cover plate is detached from the capacitor body, the rope body is pulled again, and then the cover plate is drawn out, so that time and labor are saved, and the cover plate is convenient to detach and maintain the capacitor body.

Description

TECHNICAL FIELD

[0001] The utility model relates to capacitor technical field especially thin film capacitor end cover for. BACKGROUND

[0002] With the miniaturization and integration development of electronic products, the requirements for capacitors are also higher and higher. As an important energy storage element, thin film capacitors are widely used in various electronic devices. However, the existing thin film capacitor end cover often has the problem of poor sealing and may leak oil, etc. It is usually necessary to install the end cover on the capacitor for sealing, but the existing capacitors are usually connected on the capacitor by welding or screw thread, etc. It is not convenient to disassemble and maintain or replace the capacitor. SUMMARY

[0003] The utility model provides thin film capacitor end cover in view of the prior art's insufficient, specific technical scheme is as follows:

[0004] Thin film capacitor end cover, including the cover plate that is compatible with capacitor body, the bottom both sides of cover plate extend to the fixed plug -in board in the first direction, the fixed plug -in board is equipped with movable mouth, movable mouth is inserted with movable block in the second direction, movable block one end is connected in movable mouth through elastic piece, the top of capacitor body is equipped with the slot that is compatible with fixed plug -in board, the slot is equipped with the fixed groove that is compatible with movable block in the second direction, movable block is connected with the rope body, wherein, in the stress -free state, the part of movable block outside is pushed to the outside of fixed plug -in board through elastic piece, when movable block is under the tension of rope body, movable block can be pulled into movable mouth.

[0005] As an improvement of the above technical scheme: the bottom of the cover plate has an annular insert sleeve, and the outer side surface of the annular insert sleeve has a sealing ring layer compatible with the capacitor body.

[0006] As an improvement of the above technical scheme: the inside of the movable mouth is fixedly connected with a fixed connecting plate, the elastic piece includes a telescopic sleeve rod and a spring, the telescopic sleeve rod is connected between the fixed connecting plate and the movable block, and the spring is sleeved on the outer surface of the spring.

[0007] As an improvement of the above technical scheme: a guide wheel is installed in the movable mouth, the fixed plug-in board is provided with a second through hole in the first direction, the cover plate is provided with a first through hole in the first direction, one end of the second through hole is communicated with the movable mouth, the other end of the second through hole is communicated with the first through hole, and one end of the rope body is fixedly connected with a pull ring after passing through the guide wheel, the second through hole and the first through hole in sequence.

[0008] As the improvement of the above technical scheme, the cover plate is further connected with a lead post, the top end of the lead post extends to the top of the cover plate, and the bottom end of the lead post extends to the inside of the capacitor body.

[0009] The utility model discloses the beneficial effect:

[0010] When installing the cover plate on the capacitor body, first pull the pull ring, make the rope body drive the movable block to enter the movable through -opening, and the spring will be pressed at the same time, then the cover plate is inserted into the insertion slot on the top of the capacitor body through the fixed plug -in board, so that the cover plate is initially connected to the capacitor body, then the rope body is loosened, the movable block is pushed away from the movable through -opening by the elastic force of the spring, so that the movable block enters the fixed slot in the capacitor body, thereby the cover plate can be stably connected on the capacitor body quickly, when disassembling the cover plate from the capacitor body, pull the rope body again, then extract the cover plate, save time and effort, and the cover plate is convenient to disassemble and assemble, and the capacitor body is maintained. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the whole structure schematic diagram of the utility model;

[0012] Figure 2 It is the structure schematic diagram of the cover plate in the utility model;

[0013] Figure 3 It is Figure 1 The enlarged structure schematic diagram of A in the middle;

[0014] Figure 4 It is Figure 2 The enlarged structure schematic diagram of B in the middle.

[0015] Reference signs: 1, cover plate;10, first through -hole;11, lead post;12, annular plug -in sleeve;121, sealing ring layer;2, capacitor body;20, insertion slot;21, fixed slot;3, fixed plug -in board;30, second through -hole;300, movable through -opening;301, guide wheel;31, movable block;32, fixed connecting plate;34, spring;35, telescopic sleeve rod;4, rope body;41, pull ring. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following is in conjunction with the drawings and example, and the utility model is further detailedly explained.It should be understood that the specific example described here is only used to explain the utility model, and is not used to limit the utility model.

[0017] EMBODIMENT

[0018] Please refer to Figures 1-4, thin-film capacitor end cover, comprising a cover plate 1 matched with a capacitor body 2, the bottom of the cover plate 1 extends in a first direction on both sides of the fixed plug plate 3, the fixed plug plate 3 is provided with a movable opening 300, the movable opening 300 is inserted with a movable block 31 in a second direction, one end of the movable block 31 is connected in the movable opening 300 through an elastic element, the top of the capacitor body 2 is provided with a plug slot 20 matched with the fixed plug plate 3, the plug slot 20 is provided with a fixed slot 21 matched with the movable block 31 in a second direction, the movable block 31 is connected with a rope 4, wherein, in the state of no force, the outer side of the movable block 31 is pushed to the outside of the fixed plug plate 3 through the elastic element, when the movable block 31 is pulled by the rope 4, the movable block 31 can be pulled into the movable opening 300, specifically, the first direction is X direction in Figure 1 , the second direction is Y direction in Figure 1 .

[0019] In an optional embodiment: the bottom of the cover plate 1 has an annular insertion sleeve 12, the outer side of the annular insertion sleeve 12 has a sealing ring layer 121 matched with the capacitor body 2, specifically, the annular insertion sleeve 12 can be inserted into the inner top side of the capacitor body 2, the sealing ring layer 121 can improve the sealing between the cover plate 1 and the capacitor body 2.

[0020] In an optional embodiment: the inside of the movable opening 300 is fixedly connected with a fixed connecting plate 32, the elastic element includes a telescopic sleeve rod 35 and a spring 34, the telescopic sleeve rod 35 is connected between the fixed connecting plate 32 and the movable block 31, and the spring 34 is sleeved on the outer surface of the spring 34.

[0021] In an optional embodiment: a guide wheel 301 is installed in the movable opening 300, the fixed plug plate 3 is provided with a second through hole 30 in the first direction, the cover plate 1 is provided with a first through hole 10 in the first direction, one end of the second through hole 30 is communicated with the movable opening 300, the other end of the second through hole 30 is communicated with the first through hole 10, one end of the rope 4 is fixedly connected with a pull ring 41 after passing through the guide wheel 301, the second through hole 30 and the first through hole 10 in sequence, specifically, the guide wheel 301 is convenient for guiding the rope 4, and the pull ring 41 is convenient for pulling the rope 4.

[0022] In an optional embodiment: the cover plate 1 is further connected with a lead post 11, the top end of the lead post 11 extends to the top of the cover plate 1, the bottom end of the lead post 11 extends to the inside of the capacitor body 2, so that the end part can be in contact with the electrode lead terminal of the capacitor to be electrically connected, further, a reset type pressure relief valve in the prior art is also installed on the cover plate 1, when the pressure inside the capacitor exceeds the preset value due to overvoltage or other reasons, the pressure relief valve will automatically open to release the excess pressure, thereby avoiding damage or safety accidents caused by excessive internal pressure, which is the prior art, so this application will not be described again.

[0023] Specifically, when installing the cover plate 1 to the capacitor body 2, first pull the pull ring 41, so that the rope body 4 drives the movable block 31 into the movable opening 300, and the spring 34 is pressed, then the cover plate 1 is inserted into the insertion slot 20 on the top of the capacitor body 2 through the fixed insertion plate 3, so that the cover plate 1 is initially connected to the capacitor body 2, then the rope body 4 is released, the movable block 31 is pushed away from the movable opening 300 by the elastic force of the spring 34, so that the movable block 31 enters the fixed slot 21 in the capacitor body 2, thereby the cover plate 1 can be quickly and stably connected to the capacitor body 2, when disassembling the cover plate 1 from the capacitor body 2, pull the rope body 4 again, then extract the cover plate 1, which saves time and effort, and facilitates the disassembly and assembly of the cover plate 1 and the maintenance of the capacitor body 2.

[0024] The above is only a preferred embodiment of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. End cap for thin-film capacitors, comprising a cover plate (1) which is adapted to the capacitor body (2), characterized in that The bottom of the cover plate (1) extends to the first direction with a fixed plug plate (3), the fixed plug plate (3) is provided with a movable opening (300), the movable opening (300) is provided with a movable block (31) in the second direction, one end of the movable block (31) is connected in the movable opening (300) through an elastic element, the top of the capacitor body (2) is provided with a plug slot (20) matched with the fixed plug plate (3), the plug slot (20) is provided with a fixed groove (21) matched with the movable block (31) in the second direction, the movable block (31) is connected with a rope body (4), in the state of no force, the outer side of the movable block (31) is pushed to the outside of the fixed plug plate (3) through the elastic element, when the movable block (31) is pulled by the rope body (4), the movable block (31) can be pulled into the movable opening (300).

2. The end cap for a thin film capacitor of claim 1, wherein: The bottom of the cover plate (1) has an annular plug sleeve (12), the outer side of the annular plug sleeve (12) has a sealing ring layer (121) matched with the capacitor body (2).

3. The end cap for a thin film capacitor of claim 2, wherein: The inside of the movable opening (300) is fixedly connected with a fixed connecting plate (32), the elastic element includes a telescopic sleeve rod (35) and a spring (34), the telescopic sleeve rod (35) is connected between the fixed connecting plate (32) and the movable block (31), the spring (34) is sleeved on the outer surface of the spring (34).

4. The end cap for a thin film capacitor of claim 3, wherein: The movable opening (300) is provided with a guide wheel (301), the fixed plug plate (3) is provided with a second through hole (30) in the first direction, the cover plate (1) is provided with a first through hole (10) in the first direction, one end of the second through hole (30) is communicated with the movable opening (300), the other end of the second through hole (30) is communicated with the first through hole (10), one end of the rope body (4) passes through the guide wheel (301), the second through hole (30) and the first through hole (10) in turn and is fixedly connected with a pull ring (41).

5. The end cap for a thin film capacitor of claim 4, wherein: The cover plate (1) is further connected with a lead post (11), the top end of the lead post (11) extends to the top of the cover plate (1), the bottom end of the lead post (11) extends to the inside of the capacitor body (2).

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