Sparkproof electric connector

Abstract

The utility model discloses a spark-proof electric connector which comprises a female plug, the female plug comprises a female plug shell, the tail end of the female plug shell is provided with a first plugging cavity extending towards the front end, the spark-proof electric connector further comprises a spark-proof assembly, and the spark-proof assembly is inserted and installed in the first plugging cavity from the tail end of the female plug shell. One female terminal of the female plug shell is connected with the sparkproof assembly, the pressing plate is connected to the tail end of the female plug shell and used for fixing the sparkproof assembly and the female terminal, and the problems that an existing sparkproof shell is not installed in place in a sliding mode, and resistor connection is not stable are solved. The spark-proof shell is fixed in the female plug shell through the pressing plate, and the spark-proof shell can be poured out along the axial direction of the female plug shell after the pressing plate is detached, so that the spark-proof shell is rapidly detached, and the stability of connection between the spark-proof shell and the terminal after the pressing plate is installed is good.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically to spark-proof electrical connectors. Background Technology

[0002] A high-current connector designed to prevent arcing is a connector with a resistor. When the male and female plugs are mated, the resistor is connected in series between them, so that the current flows through the resistor at the moment of connection, reducing the instantaneous current and thus preventing arcing.

[0003] For example, the high-current connector for a replaceable anti-sparking integrated module proposed in patent CN202322874352.7 uses a sliding snap to enable the anti-sparking module to be quickly installed and removed. However, the sliding snap also leads to problems with improper installation, resulting in poor connection stability between the anti-sparking module and the female terminal. Therefore, this anti-sparking electrical connector was designed. Utility Model Content

[0004] The purpose of this utility model is to provide a spark-proof electrical connector. The spark-proof housing is fixed inside the female housing by a pressure plate. After the pressure plate is removed, the spark-proof housing can be folded out along the axial direction of the female housing, so that the spark-proof housing can be quickly disassembled and assembled, and has good stability after installation.

[0005] This utility model provides the following technical solution: a spark-proof electrical connector, including a female plug, the female plug including a female insertion shell, the tail end of the female insertion shell having a first insertion cavity extending towards the front end.

[0006] It also includes a spark-proof component, which is inserted into and installed in the first insertion cavity from the tail end of the female connector housing. One female terminal of the female connector housing is connected to the spark-proof component.

[0007] It also includes a pressure plate, which is connected to the tail end of the female connector housing and is used to fix the spark-proof assembly and the female terminal.

[0008] The spark-proof assembly includes a spark-proof housing, a connecting piece, and a resistor. The spark-proof housing includes a resistor cavity, a terminal insertion cavity, and a connecting piece mounting cavity. The connecting piece mounting cavity and the resistor cavity are connected. The connecting piece mounting cavity is formed at the upper end of the terminal insertion cavity. The terminal insertion cavity is used to insert a female terminal. A boss is formed between the connecting piece mounting cavity and the terminal insertion cavity. The resistor is inserted into the resistor cavity, and the connecting piece is simultaneously sleeved on the resistor and the boss.

[0009] To limit the position of the connecting piece, a groove is provided on the boss, and the connecting piece is embedded in the groove.

[0010] To position the resistor, an upper baffle and a side baffle are formed on the top wall of the female connector housing. The upper baffle is located at the upper end of the resistor cavity, and the side baffle is L-shaped and is located on the outer wall and top surface of the connecting piece mounting cavity.

[0011] To reduce the production cost of the connecting piece, the connecting piece includes an arc-shaped piece on the female terminal and a clamping piece sleeved on the resistor.

[0012] To ensure a stable connection between the arc-shaped piece and the male terminal, multiple evenly distributed spring pieces are formed on the arc-shaped piece.

[0013] To increase the deformation of the spring, the spring has a trapezoidal structure with a narrow bottom and rounded corners at the connection between the spring and the arc plate.

[0014] To increase the contact area between the clamping plate and the resistor, the clamping plate is set on the outer surface of the upper end of the resistor and includes two clamping plates. The clamping plates are arc-shaped and are arranged opposite to each other.

[0015] To ensure a stable connection between the male and female terminals on the other side, the female connector housing also includes a second insertion cavity, the upper end of which is provided with a spring ring.

[0016] To enhance the contact area between the male and female terminals, each female terminal is provided with a crown spring assembly, which can be a single crown spring or a double crown spring.

[0017] Compared with the prior art, the beneficial effects achieved by this utility model are: the spark-proof shell is fixed in the female socket shell by the pressure plate, and after the pressure plate is removed, the spark-proof shell can be poured out along the axial direction of the female socket shell, so that the spark-proof shell can be quickly disassembled and assembled, and has good stability after installation. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a perspective view of the male and female plugs of this utility model;

[0020] Figure 2 This is a perspective view of the female plug of this utility model;

[0021] Figure 3 This is a cross-sectional view of the female plug of this utility model;

[0022] Figure 4 This is a perspective view of the spark-proof housing of this utility model;

[0023] Figure 5This is a cross-sectional view of the spark-proof housing of this utility model;

[0024] Figure 6 This is a perspective view of the connecting piece of this utility model;

[0025] Figure 7 This is a cross-sectional view of another embodiment of the female plug of this utility model;

[0026] Figure 8 This is a perspective view of the spark-proof housing of this utility model;

[0027] In the diagram: 1. Male plug; 11. Male terminal; 12. Rubber plug; 2. Female plug; 21. Female terminal; 22. Female plug housing; 221. Upper baffle; 222. Side baffle; 23. Spark-proof housing; 231. Resistor cavity; 232. Terminal insertion cavity; 233. Connecting piece mounting cavity; 234. Boss; 235. Groove; 24. Connecting piece; 241. Spring piece; 242. Connecting plate; 243. Clamping clip; 244. Arc piece; 25. Resistor; 26. Spring ring; 27. First insertion cavity; 28. Second insertion cavity; 29. ​​Pressure plate. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1 to 3This utility model provides a technical solution: a spark-proof electrical connector, including a male plug 1 and a female plug 2 that are plugged into each other. A male terminal 11 is inserted and fixed inside the male plug 1. The female plug 2 includes a female plug housing 22, and a female terminal 21 is inserted and fixed inside the female plug housing 22. The tail end of the female plug housing 22 has a first insertion cavity extending towards the front end. It also includes a spark-proof component, which is inserted from the tail end of the female plug housing 22 and installed in the first insertion cavity. One female terminal 21 of the female plug housing 22 is connected to the spark-proof component. Furthermore, it includes a pressure plate 29, which is connected to the tail end of the female plug housing 22 for fixing the spark-proof component and the female terminal 21. The pressure plate 29 is connected to the female plug housing by screws. At the bottom of body 22, the anti-sparking component is located between pressure plate 29 and female socket housing 22. Pressure plate 29 can be removed with screws. After pressure plate 29 is removed, the anti-sparking component can be folded out along the axial direction of female socket housing 22, making the anti-sparking component quick to install and remove, and stable in installation. The anti-sparking component is sleeved on the outer surface of female terminal 21. The anti-sparking component is located at the lower end of the top wall of female socket housing 22, fixing the upper and lower ends of the anti-sparking component. At the same time, an outwardly convex arc-shaped protrusion is formed on one cavity of female socket housing 22. The arc-shaped protrusion is used to place resistor 25 and limit the sides and rotation of the anti-sparking component, ensuring the installation accuracy of the anti-sparking component and the stability of the resistor connection.

[0030] like Figures 3 to 5 As shown, the spark-proof assembly includes a spark-proof housing 23, a connecting piece 24, and a resistor 25. The spark-proof housing 23 includes a resistor cavity 231, a terminal insertion cavity 232, and a connecting piece mounting cavity 233. The connecting piece mounting cavity 233 and the resistor cavity 231 are connected. The connecting piece mounting cavity 233 is formed on the upper end of the terminal insertion cavity 232 and is used to install the connecting piece 24. The terminal insertion cavity 232 is used to insert the female terminal 21. A boss 234 is formed between the connecting piece mounting cavity 233 and the terminal insertion cavity 232. A boss 234 is also formed on the inner wall of the connecting piece mounting cavity 233. The resistor 25 is inserted into the resistor cavity 231. The connecting piece 24 is sleeved on the resistor 25. The connecting piece 24 is simultaneously set on the boss 234 and the resistor 25. The boss 234 separates the connecting piece 24 from the female terminal 21, making it easy to install the connecting piece 24.

[0031] like Figure 8 As shown, preferably, the boss 234 has a groove, and the connecting piece 24 is embedded in the groove to limit and fix the connecting piece 24.

[0032] like Figure 3As shown, an upper baffle 221 and a side baffle 222 are formed on the top wall of the female plug housing 22. The upper baffle 221 is located at the upper end of the resistor cavity 231, limiting the upper end of the resistor 25 and the spark-proof housing 23, and completely fixing the resistor 25 to prevent the resistor 25 from moving. The side baffle 222 is L-shaped and is located on the outer wall and top surface of the connecting piece mounting cavity 233, limiting the top and side surfaces of the spark-proof housing 23, and completely fixing the spark-proof housing 23.

[0033] like Figure 6 As shown, the connecting piece 24 includes an arc-shaped piece 244 disposed on the female terminal 21 and a clamping piece 243 sleeved on the resistor 25. The clamping piece 243 is formed on both ends of the arc-shaped piece 244.

[0034] Multiple evenly distributed spring pieces 241 are formed on the arc plate 244. When the spring pieces 241 contact the male terminal 11, the arc plate 244 will be subjected to an outwardly expanding tension, causing the clamping piece 243 to move towards the male terminal 11 side, increasing the contact area between the clamping piece 243 and the resistor 25, thus conducting the resistance. A rubber plug 12 is embedded on the end of the male terminal 11. The rubber plug 12 contacts the arc plate 244. When the rubber plug 12 is inserted, it guides the entire circular surface of the male terminal 11 to contact the connecting piece 24, eliminating the risk of arcing from single-point contact.

[0035] The spring piece 241 has a trapezoidal structure with a small bottom width. The spring piece 241 is bent in the direction of the center of the arc piece 244, which increases the deformation of the spring piece 241, reduces wear during insertion and removal, and meets the requirements for multiple insertion and removal.

[0036] The clamping plate 243 is disposed on the outer surface of the upper end of the resistor 25 and located inside the female plug housing 22. It includes two clamping plates, which are arc-shaped and arranged opposite to each other. The arc-shaped clamping plates have good elasticity. When the male terminal 11 is inserted, the male terminal 11 first contacts the spring piece 241, causing the clamping plate to move to one side, increasing the pressure between the clamping plate and the resistor 25, and ensuring the contact stability between the clamping plate and the resistor 25.

[0037] The female plug housing 22 also includes a second plug cavity 28. A spring ring 26 is provided at the upper end of the second plug cavity 28, and a female terminal 21 is inserted into the lower end of the second plug cavity 28. Through the spring ring 26, the male terminal 11 is made conductive to the female terminal 21 while contacting the spring ring 26, thus forming a circuit.

[0038] like Figure 3 As shown, each of the female terminals 21 is provided with a crown spring assembly. The crown spring assembly is a single crown spring, which increases the contact area between the male terminal 11 and the female terminal 21 and ensures the stability of the contact.

[0039] like Figure 7As shown, preferably, the crown spring assembly is a double crown spring, which further enhances the contact area between the male terminal 11 and the female terminal 21, ensuring the stability of the contact.

[0040] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A spark-proof electrical connector, comprising a female plug, said female plug including a female housing, characterized in that: The female connector housing has a first insertion cavity extending towards the front end at its tail end. It also includes a spark-proof component, which is inserted into and installed in the first insertion cavity from the tail end of the female connector housing. One female terminal of the female connector housing is connected to the spark-proof component. It also includes a pressure plate, which is connected to the tail end of the female connector housing and is used to fix the spark-proof assembly and the female terminal.

2. The spark-proof electrical connector according to claim 1, characterized in that: The spark-proof assembly includes a spark-proof housing, a connecting piece, and a resistor. The spark-proof housing includes a resistor cavity, a terminal insertion cavity, and a connecting piece mounting cavity. The connecting piece mounting cavity and the resistor cavity are connected. The connecting piece mounting cavity is formed at the upper end of the terminal insertion cavity. The terminal insertion cavity is used to insert a female terminal. A boss is formed between the connecting piece mounting cavity and the terminal insertion cavity. The resistor is inserted into the resistor cavity, and the connecting piece is simultaneously sleeved on the resistor and the boss.

3. The spark-proof electrical connector according to claim 2, characterized in that: The boss has a groove, and the connecting piece is embedded in the groove.

4. The spark-proof electrical connector according to claim 2, characterized in that: The top wall of the female connector housing is formed with an upper baffle and a side baffle. The upper baffle is located at the upper end of the resistor cavity, and the side baffle is L-shaped and is located on the outer wall and top surface of the connecting piece mounting cavity.

5. The spark-proof electrical connector according to claim 2, characterized in that: The connecting piece includes an arc-shaped piece on the female terminal and a clamping piece sleeved on the resistor.

6. The spark-proof electrical connector according to claim 5, characterized in that: The arc-shaped sheet has multiple evenly distributed spring pieces formed on it.

7. The spark-proof electrical connector according to claim 6, characterized in that: The spring has a trapezoidal structure with a narrow bottom and bends towards the center of the arc plate.

8. The spark-proof electrical connector according to claim 5, characterized in that: The clamping plate is set on the outer surface of the upper end of the resistor and includes two clamping plates. The clamping plates are arc-shaped and are arranged opposite to each other.

9. The spark-proof electrical connector according to claim 1, characterized in that: The female connector housing also includes a second insertion cavity, and a spring ring is provided at the upper end of the second insertion cavity.

10. The spark-proof electrical connector according to claim 1, characterized in that: Each of the female terminals is provided with a crown spring assembly, which is a single crown spring or a double crown spring.

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