A high-efficiency charging and discharging connector for connecting a bolt capacitor

Abstract

The utility model relates to a high -efficient connection bolt capacitor's charge -discharge connector relates to electronic component test technical field. Including insulating casing, the insulating casing is equipped with the insulating inner core in the sliding sleeve, the rear end of insulating inner core projects insulating casing, is provided with spring between the front end of insulating inner core and insulating casing, the front end of insulating inner core is provided with the conductive metal hook in spring, the rear end of conductive metal hook is connected with insulating inner core, and the front end is provided with L hook body, L hook body projects insulating casing to the front, and the front end surface of insulating casing forms the clamping groove for clamping the side wall of bolt type terminal post between, when spring is in natural state, the groove width of clamping groove is less than the wall thickness of bolt type terminal post, and the cross section size of L hook body front end bending section is less than the cross section size of bolt type terminal post bolt hole. The utility model whole structure design is reasonable, and clamping operation is laborsaving reliable, has good anti -misinstallation and anti -electric shock protection function, is applicable to batch high -temperature aging test scene.

Description

Technical Field

[0001] This utility model relates to the field of electronic component testing technology, specifically to a high-efficiency charging and discharging connector for connecting bolt capacitors. Background Technology

[0002] Currently, in the high-temperature aging test of bolt capacitors, the commonly used charging and discharging connection devices mostly employ general standard parts such as alligator clips. These standard parts have problems such as short service life and unstable clamping force, and usually need to be replaced after a dozen or so uses. Furthermore, they are prone to poor contact and arcing due to loose clamping, which seriously affects the quality and safety of the aging test.

[0003] Furthermore, ordinary clamps are prone to material aging and elasticity decay in high-temperature environments, further reducing connection reliability. To address this, this invention proposes a DC charging and discharging fixture specifically designed for high-temperature aging testing of bolt capacitors. Its internal components utilize high-quality spring steel springs, possessing high plasticity, excellent fatigue strength, and resilience. This allows it to maintain stable clamping force even after tens of thousands of expansions and contractions, effectively reducing the risk of arcing and significantly extending service life. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency charging and discharging connector for connecting bolt capacitors, which can effectively solve the problems in the background art.

[0005] The technical solution to achieve the above objective is: a high-efficiency charging and discharging connector for connecting bolt capacitors, used for charging and discharging bolt capacitors, wherein the bolt capacitor is provided with a bolt-type terminal as an electrode connection structure, and a bolt hole is provided in the center of the bolt-type terminal. The charging and discharging connector is characterized in that: the charging and discharging connector includes an insulating shell, an insulating inner core is slidably sleeved inside the insulating shell, the rear end of the insulating inner core extends out of the insulating shell, a spring is provided between the front end of the insulating inner core and the insulating shell, a conductive metal hook is provided at the front end of the insulating inner core and inserted in the spring, the rear end of the conductive metal hook is connected to the insulating inner core, and the front end is provided with an L-shaped hook body, the L-shaped hook body extends forward out of the insulating shell and forms a clamping groove between the front end face of the insulating shell and the insulating shell for clamping the side wall of the bolt-type terminal, wherein when the spring is in its natural state, the width of the clamping groove is less than the wall thickness of the bolt-type terminal, and the cross-sectional size of the bent section at the front end of the L-shaped hook body is less than the cross-sectional size of the bolt hole of the bolt-type terminal. The rear end of the conductive metal hook is connected to a high-temperature resistant wire, which extends from the rear end of the insulating inner core to the outside of the insulating shell.

[0006] Furthermore, the inner side of the bent section at the front end of the L-shaped hook body is provided with locking teeth that engage inwardly in the threaded groove on the inner wall of the bolt hole.

[0007] Furthermore, the side wall of the insulating shell is provided with a sliding groove arranged along the length of the insulating shell, and the side wall of the insulating inner core is provided with a guide slider slidably disposed in the sliding groove.

[0008] Furthermore, a pressing handle is connected to the rear end of the insulating inner core.

[0009] Furthermore, the insulating shell and the insulating core are made of PPS material.

[0010] Furthermore, the conductive metal hook is made of 1.5mm thick brass, and the surface of the brass is also plated with a tin layer.

[0011] Furthermore, the spring is made of spring steel with a specification of 0.8mm×8mm×25mm.

[0012] Furthermore, the front end of the insulating shell is provided with a notch groove located in the same plane as the L-shaped hook, so that the L-shaped hook extending out of the insulating shell retracts into the notch groove.

[0013] The beneficial effects of this utility model are: 1) This utility model uses a tin-plated brass hook as a conductive connection component, which has good conductivity, mechanical strength and corrosion resistance. It can maintain excellent toughness and fatigue resistance in high temperature environment, effectively extending the service life of the fixture.

[0014] 2) Both the shell and the inner core of this utility model are cast from PPS (polyphenylene sulfide), which has excellent insulation properties and high temperature resistance, and can work stably in a high-temperature environment of 120℃ for a long time. The cable outlet is designed on the side to avoid damage to the wire insulation layer during pressing operation and reduce the risk of circuit failure.

[0015] 3) The overall structure is reasonably designed, the clamping operation is labor-saving and reliable, and it has good protection against misinstallation and electric shock. It is suitable for batch high-temperature aging test scenarios. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a cross-sectional view of the present invention; Figure 4 This is a diagram showing the usage state of this utility model. Detailed Implementation

[0017] like Figure 1-3As shown, this utility model discloses a high-efficiency charging and discharging connector 4 for connecting bolt capacitors 1 for charging and discharging. The bolt capacitor 1 is provided with bolt-type terminals 2 as electrode connection structures, and bolt holes 3 are provided in the center of the bolt terminals 2.

[0018] The charging and discharging connector 4 includes an insulating housing 5, which has a circular central hole. An insulating inner core 6 is slidably fitted inside the central hole of the insulating housing 5. A sliding groove 13 is provided on the side wall of the insulating housing 5 along the length of the insulating housing 5. A guide slider 14 is provided on the side wall of the insulating inner core 6 and is slidably disposed in the sliding groove. The circumferential position of the insulating inner core 6 is positioned by the cooperation of the guide slider 14 and the sliding groove 13.

[0019] Both the insulating shell 5 and the insulating core 6 are made of PPS material. A limiting step 7 is provided in the insulating shell 5 at the front end of the insulating core 6. A spring 8 is provided between the front end of the insulating core 6 and the limiting step 7. The spring 8 is made of spring steel and has a specification of 0.8mm×8mm×25mm (wire diameter×outer diameter×length). The rear end of the insulating core 6 extends out of the insulating shell 5 and is connected to a pressing handle 18.

[0020] A conductive metal hook 9, inserted into the spring 8, is provided on the front side of the insulating inner core 6. The conductive metal hook 9 is made of 1.5mm thick brass with a tin-plated layer on its surface. A notch forms a semi-circular shape at the front end of the insulating inner core 6. The rear end of the conductive metal hook 9 is connected to the semi-circular shape by a countersunk bolt. The countersunk bolt 19 and the conductive metal hook 9 do not protrude from the circumference of the insulating inner core 6 radially, allowing the insulating inner core 6 to slide normally within the insulating shell 5. The front end of the hook 9 is provided with an L-shaped hook body 10. The L-shaped hook body 10 extends forward out of the insulating housing 5 and forms a clamping groove 11 between itself and the front end face of the insulating housing 5 for clamping the side wall of the bolt-type terminal 2. When the spring is in its natural state, the groove width a of the clamping groove 11 is less than the wall thickness of the bolt-type terminal 2. The cross-sectional size of the bent section 10.1 at the front end of the L-shaped hook body 10 is less than the cross-sectional size of the bolt hole 3 of the bolt-type terminal, so that the bent section 10.1 can extend into the bolt hole 3 of the bolt-type terminal.

[0021] Furthermore, to further ensure the firmness of the clamping, the side of the bent section 10.1 facing the insulating housing 5 is provided with a locking tooth 12 for locking inward into the threaded groove on the inner wall of the bolt hole 3. The locking tooth 12 is tapered with its tip facing the threaded groove, which improves the reliability of the connection.

[0022] The rear end of the conductive metal hook 9 is connected to a high-temperature resistant wire 15. The insulating inner core 6 is provided with a central through hole. The side wall of the tail end of the insulating inner core 6 is provided with a side hole 17 that connects to the central through hole. The high-temperature resistant wire 15 passes through the central through hole and exits through the side hole 17. It should be noted that the design of the extension length of the rear end of the insulating inner core 6 should avoid interference with the extension part of the high-temperature resistant wire 15 when sliding forward. If the normal forward sliding of the insulating inner core 6 is no more than 5cm, then the extension length of the rear end of the insulating inner core 6 should be greater than 5cm, and the side hole 17 should be set on the rear side of the part greater than 5cm.

[0023] The front end of the insulating shell 5 is provided with a notch 18 located in the same plane as the L-shaped hook 10, so that the L-shaped hook 10 extending out of the insulating shell 5 retracts into the notch 18.

[0024] like Figure 4 As shown, when using this utility model, press the pressing handle 18 to push the L-shaped hook 10 forward, so that the width of the clamping groove 11 is greater than the side wall thickness of the bolt-type terminal. Then, place the bent section 10.1 into the bolt hole 3 of the bolt-type terminal 2, release the pressing handle 9, and clamp the side wall of the terminal between the L-shaped hook 10 and the insulating shell 5 to achieve electrical connection.

Claims

1. A high-efficiency charging and discharging connector for connecting bolt capacitors, used for charging and discharging connections of bolt capacitors, wherein the bolt capacitor is provided with bolt-type terminals as electrode connection structures, and a bolt hole is provided in the center of the bolt-type terminals, characterized in that: The charging and discharging connector includes an insulating housing, an insulating inner core that slides inside the insulating housing, a rear end of the insulating inner core that extends out of the insulating housing, a spring that is provided between the front end of the insulating inner core and the insulating housing, a conductive metal hook that passes through the spring that is provided at the front end of the insulating inner core, a L-shaped hook that is provided at the front end of the conductive metal hook that is connected to the insulating inner core, and a clamping groove that is formed between the L-shaped hook and the front end face of the insulating housing for clamping the side wall of the bolt-type terminal. When the spring is in its natural state, the width of the clamping groove is smaller than the wall thickness of the bolt-type terminal, and the cross-sectional area of ​​the bent section at the front end of the L-shaped hook is smaller than the cross-sectional area of ​​the bolt hole of the bolt-type terminal. The rear end of the conductive metal hook is connected to a high-temperature resistant wire, which extends from the rear end of the insulating inner core to the outside of the insulating shell.

2. The charging and discharging connector for a high-efficiency connecting bolt capacitor according to claim 1, characterized in that: The inner side of the bent section at the front end of the L-shaped hook is provided with locking teeth that engage inward in the threaded groove on the inner wall of the bolt hole.

3. The charging and discharging connector for a high-efficiency connecting bolt capacitor according to claim 1, characterized in that: The insulating shell has a sliding groove on its side wall that runs along the length of the insulating shell, and the insulating inner core has a guide slider that slides in the sliding groove on its side wall.

4. The charging and discharging connector for a high-efficiency connecting bolt capacitor according to claim 1, characterized in that: A pressing handle is connected to the rear end of the insulating inner core.

5. The charging and discharging connector for a high-efficiency connecting bolt capacitor according to claim 1, characterized in that: The insulating shell and insulating core are made of PPS material.

6. The charging and discharging connector for a high-efficiency connecting bolt capacitor according to claim 1, characterized in that: The conductive metal hook is made of 1.5mm thick brass, and the surface of the brass is also tin-plated.

7. The charging and discharging connector for a high-efficiency connecting bolt capacitor according to claim 1, characterized in that: The spring is made of spring steel and has a specification of 0.8mm×8mm×25mm.

8. The charging and discharging connector for a high-efficiency connecting bolt capacitor according to claim 1, characterized in that: The front end of the insulating shell is provided with a notch groove located in the same plane as the L-shaped hook, so that the L-shaped hook extending out of the insulating shell retracts into the notch groove.

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