CN115036134A

CN115036134A - Bridge structure and capacitor with same

Info

Publication number: CN115036134A
Application number: CN202210843173.4A
Authority: CN
Inventors: 谭剑; 丁继华; 陈伟伟
Original assignee: NANTONG XINJIANGHAI POWER ELECTRONICS CO Ltd
Current assignee: NANTONG XINJIANGHAI POWER ELECTRONICS CO Ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2022-09-09
Anticipated expiration: 2042-07-18
Also published as: CN115036134B

Abstract

The application discloses crane span structure and have its condenser includes: the end cover comprises an insulating cover body and a plurality of compensation parts, the compensation parts are arranged on a first side face of the insulating cover body at intervals, the compensation parts extend along a second side face direction far away from the insulating cover body, the end cover is provided with a plurality of slots which are in one-to-one correspondence with the compensation parts, and the slots penetrate through the corresponding compensation parts and the insulating cover body along the thickness direction of the insulating cover body; the conductive connecting terminals are inserted into the slots in a one-to-one correspondence manner and are in contact with the circumferential slot walls of the slots. The application provides a crane span structure and have its condenser can utilize compensation portion to support the compensation to conductive connection terminal, is showing to have reduced the risk that conductive connection terminal the slope condition appears, and then is showing to have reduced the risk that pin interval error and height foot appear in the condenser, has improved the yields of condenser.

Description

Bridge structure and capacitor with same

Technical Field

The invention relates to the technical field of capacitors, in particular to a bridge structure and a capacitor with the same.

Background

The capacitor comprises a shell and an electric core arranged in the shell, and a bridge structure is arranged at the top of the shell. The bridge structure comprises an insulating cover body and a plurality of pins, the insulating cover body is provided with a plurality of slots in one-to-one correspondence with the pins, the pins are inserted into the slots corresponding to the pins, first ends of the pins are welded with electrodes of the battery core, and second ends of the pins extend out of the insulating cover body to be led out of the electrodes of the battery core. The capacitor is generally processed by the following steps: and welding the bridge structure and the battery core, installing the bridge structure welded with the battery core in the shell, and pouring glue into the shell.

However, in the above-mentioned processing process of the capacitor, at least some pins are prone to be inclined, and then the capacitor is prone to have the problems that the pin pitch has errors and high and low pins, and then the yield of the capacitor is affected.

Disclosure of Invention

In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide a bridge structure and a capacitor having the same.

In a first aspect, the present application provides a bridge structure comprising:

the end cover comprises an insulating cover body and a plurality of compensation parts, the insulating cover body is provided with a first side surface and a second side surface which are opposite in the thickness direction, the compensation parts are arranged on the first side surface at intervals, the compensation parts extend in the direction far away from the second side surface, the end cover is provided with a plurality of slots which are in one-to-one correspondence with the compensation parts, and the slots penetrate through the corresponding compensation parts and the insulating cover body in the thickness direction of the insulating cover body;

the conductive connecting terminals are inserted into the slots in a one-to-one correspondence mode and are in contact with the circumferential slot walls of the slots.

Furthermore, the conductive connecting terminal is provided with a first positioning part, the end cover is provided with a second positioning part, and the first positioning part and the second positioning part are in positioning fit in the thickness direction of the insulating cover body.

Further, one of the first positioning portion and the second positioning portion is a positioning projection and the other is a first positioning groove.

Furthermore, the slot has a first groove section located at the compensation portion, and the second positioning portion is located at a groove wall of the first groove section.

Furthermore, the conductive connecting terminal comprises an inserting section and a conductive connecting section which are connected, the inserting section is inserted into the inserting slot, the conductive connecting section is arranged vertically or obliquely relative to the inserting end, a second positioning slot is concavely arranged on the second side face, and the conductive connecting section is positioned and arranged in the second positioning slot.

Furthermore, the first positioning part is a positioning protrusion, the second positioning part is a first positioning groove, the insertion section is provided with a first end and a second end which are opposite, the first end extends out of the first side surface, the side surface of the insertion section far away from the second positioning groove is concavely provided with a mounting groove, one end of the mounting groove penetrates through the end surface of the second end to form a second notch on the end surface of the second end, a moving part and a pushing part are arranged in the mounting groove, the pushing part is positioned at one side of the moving part close to the first end, the positioning protrusion is positioned at one side of the bottom groove wall of the moving part far away from the mounting groove, the moving part is movably arranged along the groove depth direction of the mounting groove to move between a first position and a second position, when the movable piece is at the first position, the movable piece is accommodated in the mounting groove, when the movable piece is at the second position, the positioning bulge extends out of the mounting groove and is positioned in the first positioning groove, the pushing piece is mounted in the mounting groove through the second notch, and the movable piece is driven to move from the first position to the second position in the process that the pushing piece enters the mounting groove.

Furthermore, the mounting groove is provided with two first groove walls positioned at two sides of the second groove opening, the two first groove walls are both convexly provided with limiting rods, the moving part is a movable block, two sides of the movable block are both provided with guide grooves, the two limiting rods are respectively inserted in the two guide grooves, the guide grooves are provided with a first groove section and a second groove section which are sequentially connected, the first groove section extends along the thickness direction of the insulating cover body, one end of the first groove section penetrates through one end of the movable block far away from the second groove opening, the second groove section extends along the bottom groove wall close to the mounting groove from one end of the first groove section close to the second groove opening, the second groove section comprises a third groove wall far away from the first groove section, the second groove section is provided with a necking section, a positioning cavity for positioning the limiting rods is formed between the necking section and the third groove wall, when the movable block moves from the first position to the second position, the limiting rods move in the second guide groove section and enter the positioning cavity through the necking section, the pushing piece is movably arranged in the mounting groove through the second notch.

Furthermore, the pushing piece is in butt fit with the groove wall of the mounting groove and the groove wall of the slot.

Furthermore, one side of the pushing piece, which is close to the moving piece, is provided with a pushing surface, the pushing surface is obliquely arranged towards the bottom groove wall of the installation cavity in the direction along which the pushing piece is installed to the installation cavity, the moving piece is provided with a pushing matching surface, and the pushing matching surface and the pushing surface are arranged in parallel.

In a second aspect, the present application also provides a capacitor including a bridge structure.

The application provides a crane span structure and have its condenser, through being provided with a plurality of compensation portions at insulating lid, the slot runs through compensation portion and insulating lid along the thickness direction of insulating lid, and electrically conductive connecting terminal inserts and locates the slot, can utilize compensation portion to support the compensation to electrically conductive connecting terminal, the end cover has been enlarged to electrically conductive connecting terminal's supported area, the risk that the slope condition appears in electrically conductive connecting terminal has been showing and has been reduced, and then the risk that pin interval error and height foot appear in the condenser has been showing and has been reduced, the yields of condenser has been improved.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic top view of an end cap provided by an embodiment of the present application;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

fig. 3 is a schematic side view of a conductive connection terminal according to an embodiment of the present disclosure;

fig. 4 is a rear view schematically illustrating a conductive connection terminal according to an embodiment of the present disclosure;

FIG. 5 is a schematic half-section view of a bridge structure provided in an embodiment of the present application;

FIG. 6 is a schematic half-section view of a bridge structure provided in accordance with another embodiment of the present application;

fig. 7 is an exploded view of a conductive connection terminal according to another embodiment of the present disclosure;

FIG. 8 is a schematic view of the movable member shown in FIG. 7.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

Referring to fig. 1-6, embodiments of the present disclosure provide a bridge structure 10 that can be disposed in a capacitor to lead out electrodes of a battery cell in the capacitor, so as to facilitate electrical connection between the capacitor and an external device. The bridge structure 10 includes end caps 100 and conductive connection terminals 200, and the number of the conductive connection terminals 200 is several. The end cap 100 includes an insulating cap body 110 and a plurality of compensation portions 120, the insulating cap body 110 has a first side surface 111 and a second side surface 112 opposite to each other in a thickness direction, the plurality of compensation portions 120 are disposed at intervals on the first side surface 111, and each compensation portion 120 extends in a direction away from the second side surface 112. The end cap 100 is provided with a plurality of slots 130 corresponding to the plurality of compensation portions 120, and the plurality of slots 130 and the plurality of compensation portions 120 are arranged in a one-to-one correspondence. The slot 130 penetrates through the corresponding compensation portion 120 and the insulating cover 110 along the thickness direction of the insulating cover 110. The conductive connection terminals 200 are inserted into the slots 130 in a one-to-one correspondence, and the conductive connection terminals 200 are in contact with circumferential slot walls of the slots 130. So set up, can support the compensation through compensation portion 120 to conductive connection terminal 200, enlarged end cover 100 to conductive connection terminal 200's support area, show to have reduced conductive connection terminal 200 the risk that the slope condition appears, and then show to have reduced the risk that pin interval error and height foot appear in the condenser, improved the yields of condenser.

The insulating cover 110 and the compensation part 120 are made of insulating materials, such as rubber and plastic.

The compensation portion 120 and the insulating cover 110 may be, but not limited to, fixedly connected or integrally formed. When the compensation part 120 and the insulation cover 110 are fixedly connected, the fixing connection method may be bonding or welding. As shown in the drawings, the compensation part 120 and the insulation cover 110 are integrally formed.

Among them, the conductive connection terminal 200 may be, but not limited to, a pillar shape, a sheet shape, etc. As shown in the drawing, the conductive connection terminal 200 has a sheet shape. The end of the conductive connection terminal 200 protruding out of the first side 111 may be provided with a plurality of pins 221 arranged at intervals.

The conductive connection terminal 200 contacts with the circumferential groove wall of the slot 130, so that the conductive connection terminal 200 can be prevented from inclining in the slot 130. The conductive connection terminal 200 and the circumferential side wall of the socket 130 may be in transition fit or interference fit to contact the conductive connection terminal 200 with the circumferential groove wall of the socket 130. When the conductive connection terminal 200 is inserted into the insertion slot 130, the conductive connection terminal 200 may be inserted into the insertion slot 130 by an external force, such as, but not limited to, tapping the conductive connection terminal 200.

It should be understood that the conductive connection terminal 200 shown herein is inclined with respect to the thickness direction of the insulating cover 110.

The insulating cover 110 may be, but not limited to, cross-shaped, circular, and the like.

In some embodiments of the present application, the conductive connection terminal 200 is provided with a first positioning portion, and the end cap 100 is provided with a second positioning portion, and the first positioning portion and the second positioning portion are in positioning fit in the thickness direction of the insulating cover 110. By the arrangement, the conductive connecting terminal 200 can be prevented from moving up and down relative to the end cover 100, and the risk of high and low pins of the capacitor is further reduced.

The slot 130 includes a first slot segment 2321 and a second slot segment 2322 connected to each other, the first slot segment 2321 is located in the compensation portion 120, and the second slot segment 2322 is located in the insulating cover 110. The second positioning portion may be located at a groove wall of the first groove segment 2321 or a groove wall of the second groove segment 2322.

Wherein, the first positioning portion may be a positioning protrusion 233, and the second positioning portion may be a first positioning groove; alternatively, the first positioning portion may be a first positioning groove, and the second positioning portion may be a positioning protrusion 233. It should be understood that, when the first positioning portion and the second positioning portion are configured as described above, when the conductive connection terminal 200 is inserted into the slot 130, the positioning protrusion 233 may cause scratches to be formed on the conductive connection terminal 200 or the insulating cover 110, or even cause local deformation of the slot 130, thereby affecting the compensation effect of the compensation portion 120 on the conductive connection terminal 200.

In some embodiments of the present application, the conductive connection terminal 200 includes a plug section 210 and a conductive connection section 220 connected thereto. The plug section 210 extends along the thickness direction of the insulating cover 110, and two ends of the plug section extend out of the first side surface 111 and the second side surface 112 respectively, and the conductive connection terminal 200 is inserted into the slot 130 through the plug section 210. The conductive connecting section 220 is disposed vertically or obliquely relative to the insertion end, the second positioning groove 140 is concavely disposed on the second side surface 112, and the conductive connecting section 220 is positioned and disposed in the second positioning groove 140. With this arrangement, the welding area of the conductive connection terminal 200 for welding with the cell electrode can be enlarged by the conductive connection section 220, and the assembly accuracy and the assembly efficiency of the conductive connection terminal 200 on the end cap 100 can be improved by positioning the conductive connection section 220 in the second positioning groove 140.

When the conductive connection terminal 200 is inserted into the slot 130, the worker can tap the conductive connection terminal 200 to the second positioning groove 140 and attach to the bottom groove wall of the second positioning groove 140.

Wherein, as shown in the drawing, the plug section 210 and the conductive connection section 220 are vertically arranged.

The plug section 210 and the conductive connection section 220 may be, but not limited to, a fixed connection or an integral structure. When the plug section 210 and the conductive connection section 220 are fixedly connected, the fixing connection manner may be, but is not limited to, welding, etc. As shown in the drawings, the plug section 210 and the conductive connection section 220 are integrated, and the conductive connection section 220 is formed by bending one end of the plug section 210.

Referring to fig. 7-8, in some embodiments of the present application, the first positioning portion is a positioning protrusion 233 and the second positioning portion is a first positioning groove. The plug section 210 has opposite first and second ends, the first end extending out of the first side 111. The side of the insertion section 210 far from the second positioning groove 140 is concavely provided with a mounting groove 211, so that a first notch 2111 is formed on the side of the insertion section 210 far from the second positioning groove 140. One end of the mounting groove 211 is disposed through an end surface of the second end to form a second notch 2112 at the end surface of the second end, the second notch 2112 communicating with the first notch 2111. The movable member 230 and the pushing member 240 are installed in the installation slot 211, the pushing member 240 is located on a side of the movable member 230 near the first end, and the positioning protrusion 233 is located on a side of the movable member 230 far from the bottom slot wall of the installation slot 211. The movable member 230 is movably disposed along a groove depth direction of the mounting groove 211 to move between a first position and a second position. In the first position, the movable member 230 is received in the mounting groove 211, i.e. the positioning protrusion 233 does not extend out of the side of the insertion section 210 away from the second positioning slot 140. In the second position, the positioning projection 233 protrudes out of the mounting groove 211 and is positioned in the first positioning groove. The pushing member 240 is installed in the installation slot 211 through the second notch 2112, and drives the movable member 230 to move from the first position to the second position during the process that the pushing member 240 enters the installation slot 211. So set up, can realize through the location cooperation of protruding 233 in location and first constant head tank between electrically conductive connecting terminal 200 and end cover 100, can also avoid the protruding 233 in location when electrically conductive connecting terminal 200 inserts slot 130 to increase the degree of difficulty when electrically conductive connecting terminal 200 inserts slot 130 to and avoid the protruding 233 in location to form the mar on the circumference lateral wall of slot 130 and lead to the appearance of the condition of slot 130 local deformation.

Wherein, the positioning protrusion 233 is matched with the first positioning groove in shape to improve the positioning accuracy. The positioning protrusions 233 may be, but not limited to, cylindrical, hemispherical, etc.

The mounting slot 211 includes two first slot walls 2113 and a second slot wall 2114 surrounding the first slot 2111, the second slot wall 2114 is located between the two first slot walls 2113, the second slot 2112 is located between the two first slot walls 2113, and the second slot wall 2114 is opposite to the second slot 2112. The movable member 230 may enter the mounting groove 211 through the second notch 2112 after the insertion section 210 is inserted into the insertion slot 130, or may be placed in the mounting groove 211 when the insertion section 210 is not inserted into the insertion slot 130. When the movable member 230 is located at the first position, the two first groove walls 2113 and the second groove wall 2114 are in positioning contact with the movable member 230, so as to ensure the positioning accuracy of the positioning protrusion 233 located at the movable member 230 and the first positioning groove located at the side wall of the insertion groove 130.

When the movable member 230 is located at the second position, a portion of the positioning protrusion 233 is located in the mounting groove 211 and another portion is located in the first positioning groove. So set up for there is certain adjustable scope in the length that ejector member 240 stretches into the installation cavity. Therefore, when the movable member 230 is located at the second position, one end of the pushing member 240 away from the movable member 230 is flush with or slightly protruded from the end surface of the second end, so as to facilitate the assembling operation of the pushing member 240.

Both the pushing member 240 and the moving member 230 may be made of metal or insulating material.

Wherein, the shape of the pushing piece 240 is matched with the shape of the mounting groove 211. The pusher 240 may be, but is not limited to, a columnar structure or the like.

The process of inserting the conductive connection terminal 200 into the slot 130 in the present embodiment is: the movable member 230 is first installed in the installation slot 211 and located at the first position, the conductive connection terminal 200 without the pushing member 240 is inserted into the insertion slot 130, and then the pushing member 240 is installed in the installation slot 211 from the second notch 2112 until the movable member 230 is located at the second position.

In some embodiments of the present application, the mounting slot 211 has two first slot walls 2113 on both sides of the second slot 2112, and each of the two first slot walls 2113 is provided with a retaining bar 2115 in a protruding manner. The moving member 230 is a moving block, two sides of the moving block are both provided with guide slots 232, and the two limiting rods 2115 are respectively inserted into the two guide slots 232. The guide groove 232 has a first groove segment 2321 and a second groove segment 2322 connected in sequence, the first groove segment 2321 extends along the thickness direction of the insulating cover 110, and one end of the first groove segment 2321 penetrates through one end of the movable block far away from the second notch 2112, and the second groove segment 2322 extends from one end of the first groove segment 2321 close to the second notch 2112 along the bottom groove wall close to the mounting groove 211. The second slot segment 2322 and the first slot segment 2321 may be vertically disposed. When the movable member 230 is installed in the installation slot 211, the movable member 230 can slide down along the bottom slot wall of the installation slot 211, and the limiting rod 2115 enters the first slot segment 2321 during the sliding down process, and when the movable member 230 reaches the first position, the limiting rod 2115 enters the second slot segment 2322. The second slot segment 2322 includes a third slot wall 2323 far away from the first slot segment 2321, the second slot segment 2322 has a reduced-diameter segment 2324, and a positioning cavity 2325 for positioning the limiting rod 2115 is formed between the reduced-diameter segment 2324 and the third slot wall 2323. When the movable block moves from the first position to the second position under the pushing action of the pushing member 240, the limiting rod 2115 moves in the second guiding groove 232 section and enters the positioning cavity 2325 through the necking section 2324. It should be noted that when the movable block is in the second position, the restraint bar 2115 is positioned in the positioning cavity 2325.

The width of the constricted section 2324 is slightly smaller than the width of the limiting rod 2115, and the limiting rod 2115 can pass through the constricted section 2324 and enter the positioning cavity 2325 under the action of the pushing force of the pushing piece 240. The wall of the narrowed portion 2324 may be a circular arc to reduce the difficulty of the check rod 2115 passing through the narrowed portion 2324. Additionally, the check rod 2115 may generate a sound when passing through the restricted mouth segment 2324 to help inform the assembler that the moveable member 230 is in the second position.

In this embodiment, since the movable member 230 is locked in the second position, the pushing member 240 can be removed or retained in the installation cavity. The pushing element 240 is movably mounted in the mounting groove 211 through the second notch 2112, so that the pushing element 240 can be removed from the mounting groove 211, and the pushing element 240 can be reused.

Of course, in other embodiments, the pushing element 240 is in abutting engagement with both the groove wall of the mounting groove 211 and the groove wall of the slot 130, and the movable element 230 is pushed to the second position by the pushing element 240 and is locked at the second position.

In some embodiments of the present application, a side of the pushing member 240 close to the movable member 230 is provided with a pushing surface 242, and the pushing surface 242 is inclined toward a bottom groove wall of the installation cavity in a direction along the installation direction of the pushing member 240 to the installation cavity. The movable member 230 has a pushing engagement surface 2311 in pushing engagement with the pushing surface 242, and the pushing engagement surface 2311 is parallel to the pushing surface 242.

The side surface of the movable element 230, which is far away from the first notch 2111, is concavely provided with an avoiding through groove 231, and the avoiding through groove 231 penetrates through the movable element 230 along the moving direction of the pushing element 240 in the mounting groove 211. The bottom wall of the avoiding through groove 231 includes a first groove wall section and a second groove wall section which are connected, and the first groove wall section is located on one side of the second groove wall section close to the pushing member 240. The pushing engagement surface 2311 is located on the first groove wall section, and the second groove wall section is arranged in parallel with the bottom groove wall of the mounting groove 211. An ejecting portion 241 is convexly disposed at an end of the ejecting member 240 close to the movable member 230, and an ejecting surface 242 is disposed at an end surface of the ejecting portion 241 close to the end of the movable member 230.

The embodiment of the present application further provides a capacitor, which includes a bottom shell, a cover, an electrical core, and the bridge structure 10. The top of drain pan is located to the lid cover, and the electric core is installed in the drain pan, and crane span structure 10 is installed in the lid cover.

Among them, the capacitor may be, but is not limited to, a film capacitor, an aluminum electrolytic capacitor, and the like.

It will be understood that any orientation or positional relationship indicated above with respect to the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., is based on the orientation or positional relationship shown in the drawings and is for convenience in describing and simplifying the invention, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be considered limiting of the invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means three or more unless otherwise specified.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A bridge structure, comprising:

the conductive connecting terminals are inserted into the slots in a one-to-one correspondence mode, and the conductive connecting terminals are in contact with the circumferential slot walls of the slots.

2. The bridge structure according to claim 1, wherein the conductive connection terminal is provided with a first positioning portion, the end cap is provided with a second positioning portion, and the first positioning portion and the second positioning portion are positioned and engaged in a thickness direction of the insulating cover.

3. The bridge structure of claim 2, wherein one of the first and second positioning portions is a positioning projection and the other is a first positioning groove.

4. The bridge structure of claim 2, wherein the slot has a first slot segment located at the compensation portion, and the second positioning portion is located at a slot wall of the first slot segment.

5. The bridge structure of claim 2, wherein the conductive connection terminal comprises a plug section and a conductive connection section, the plug section is inserted into the slot, the conductive connection section is disposed vertically or obliquely relative to the plug section, the second side surface is recessed with a second positioning groove, and the conductive connection section is positioned in the second positioning groove.

6. The bridge structure of claim 5, wherein the first positioning portion is a positioning protrusion and the second positioning portion is a first positioning groove, the insertion section has a first end and a second end opposite to each other, the first end extends out of the first side surface, a mounting groove is concavely formed on a side surface of the insertion section away from the second positioning groove, one end of the mounting groove penetrates through an end surface of the second end to form a second notch on the end surface of the second end, a moving member and a pushing member are mounted in the mounting groove, the pushing member is located on a side of the moving member close to the first end, the positioning protrusion is located on a side of the moving member away from a bottom groove wall of the mounting groove, the moving member is movably disposed along a groove depth direction of the mounting groove to move between a first position and a second position, and in the first position, the moving part is accommodated in the mounting groove, when the second position, the positioning protrusion extends out of the mounting groove and is positioned in the first positioning groove, the pushing piece is installed in the mounting groove through the second notch, and the pushing piece enters the mounting groove and drives the moving part to move to the second position from the first position.

7. The bridge structure according to claim 6, wherein the mounting groove has two first groove walls located on two sides of the second groove opening, each of the two first groove walls has a stop bar protruding therefrom, the movable member is a movable block, each of the two movable blocks has a guide groove, and the two stop bars are respectively inserted into the two guide grooves, wherein the guide groove has a first groove section and a second groove section connected in series, the first groove section extends along a thickness direction of the insulating cover body and has one end penetrating through an end of the movable block away from the second groove opening, the second groove section extends from an end of the first groove section close to the second groove opening along a bottom groove wall close to the mounting groove, the second groove section includes a third groove wall away from the first groove section, the second groove section has a notch section, and a positioning cavity for positioning the stop bar is formed between the notch section and the third groove wall, wherein the movable block is by the first position removes when reaching the second position, the gag lever post is in the second guide slot section removes and passes through the throat section gets into the location chamber, the ejecting piece pass through second notch movably install in the mounting groove.

8. The bridge structure of claim 6, wherein the push member is in abutting engagement with both a slot wall of the mounting slot and a slot wall of the slot.

9. The bridge structure of claim 6, wherein a side of the pushing member adjacent to the movable member is provided with a pushing surface, the pushing surface is inclined toward a bottom wall of the mounting cavity in a direction along the direction in which the pushing member is mounted to the mounting cavity, and the movable member is provided with a pushing mating surface, and the pushing mating surface is parallel to the pushing surface.

10. A capacitor comprising the bridge structure of any one of claims 1-9.