Connector for photovoltaic cable

Abstract

The utility model provides a connector for a photovoltaic cable, which is composed of a contact pin and a plug bush which are connected with each other, and both the contact pin and the plug bush are provided with a retaining ring and a positioning table; the retaining ring and the positioning table are both positioned at one end of the pin and one end of the plug bush and are matched with an external plastic shell; the retaining ring comprises a ring body, a retaining barb and a positioning protruding block. According to the cable connector provided by the utility model, a traditional positioning boss is changed into the expansion type stretching step, so that the expansion type stretching step can be integrally formed with the body of the pin or the plug bush, the manufacturing cost is reduced, and the positioning precision of the terminal in the shell is improved; secondly, an interference table and a positioning convex block are additionally arranged on the retaining ring, the effect of the retaining ring is improved, finally, the crown spring line of the drum spring is designed to be H-shaped, the area of the middle connecting part is increased, the contact area of the middle connecting part and the outer circle of the contact pin is increased, the gap contact resistance value between the plug bush and the contact pin is increased, and the assembly stability is further improved.

Description

Technical Field

[0001] The utility model relates to a connector, in particular to a connector between photovoltaic cables. Background Art

[0002] At present, photovoltaic power generation is widely used. Due to the popularity of photovoltaic power generation, the power generation circuit of the photovoltaic panel needs to be connected to the storage or use power grid, so cables are needed to connect the photovoltaic panel and the external circuit.

[0003] Traditional connectors are composed of terminals and housings. The housings are made of insulating materials such as rubber and plastic, and are used to determine the position of the terminals and protect them. The terminals are also made of metal and need to be made into pins and sockets to cooperate with each other and form an electrical connection with external cables. Since the terminals are made of metal, the two connecting terminals need to be connected and plugged in to form a connection. Therefore, the terminals need to be stably positioned in the housing. The connection between the pins and sockets needs to be stable and able to separate under force. In the absence of external force, the connection strength between the pins and sockets directly affects the connection status of the connector.

[0004] The main connection method of connectors today is to set a drum spring for connection on the socket to make it fit tightly with the pin, and realize the mutual connection of the terminals through the elastic deformation of the drum spring. Since the structure of the drum spring needs to ensure its elastic deformation, it is generally designed with the dimensions of both ends larger than the middle dimension. In this way, the middle structure cannot be stable due to the elastic deformation, which has an irreversible impact on the stability of the connection.

[0005] In addition, in order to ensure the positioning of the terminal in the plastic housing and the stability of the force during assembly, a retaining ring and a positioning protrusion are generally added to the terminal. However, the terminal itself is integrally formed, so the retaining ring and the terminal can only be combined by assembly, and the protrusion of the positioning protrusion is difficult to increase the protruding size during integral molding, which makes it impossible to effectively and stably position the terminal in the housing. Utility Model Content

[0006] The technical problem to be solved by the present invention is to provide a connector for photovoltaic cables, in which the terminals are redesigned and the structure of the connecting drum spring is changed, thereby increasing the contact area and connection stability between the terminals, while changing the structure of the retaining ring and the positioning protrusion, reducing the manufacturing cost of the terminals and improving the positioning effect of the terminals in the housing.

[0007] In order to solve the above technical problems, the technical solution of the utility model is: a connector for photovoltaic cables, consisting of a pin and a sleeve connected to each other, wherein the pin and the sleeve are both provided with a stop ring and a positioning platform; the stop ring and the positioning platform are both located at one end of the pin and the sleeve, and cooperate with the external plastic shell; the stop ring includes a ring body, a stop barb and a positioning protrusion; the ring body has an annular shape, is arranged around the outer circle of the pin or the sleeve, and is fixedly connected to the pin or the sleeve; the stop barb is located on the ring body, one end of which is fixedly connected to the ring body, and the other end extends outward in a divergent shape; the positioning protrusion is located at one end of the stop barb, fixed on the ring body, and the position of the pin or the sleeve in the plastic shell is positioned by the positioning protrusion;

[0008] One end of the anti-recession barb is provided with an interference platform, one end of the interference platform is fixedly connected to the anti-recession barb, and one end extends outward and is connected to the anti-recession barb at an angle to enhance the interference with the plastic shell.

[0009] Furthermore, the anti-retraction barbs and the positioning protrusions correspond to each other one by one, and a plurality of them are provided and evenly distributed on the outer circle of the ring body.

[0010] Furthermore, the angle between the interference platform and the anti-retraction barb is not less than 100 degrees.

[0011] Furthermore, the positioning platform is arranged on the outer circle of the pin or the sleeve, located at one end of the pin or the sleeve, and adopts an expansion stretching step, which can be integrally formed with the pin or the sleeve.

[0012] Furthermore, the positioning platforms are provided in plurality and are evenly distributed in a circular shape on the pins or sleeves.

[0013] Furthermore, each of the positioning platforms is configured to have a multi-step shape, which is raised step by step from both sides to the middle.

[0014] Furthermore, a drum spring is provided on the socket, and the drum spring matches the outer circle of the pin.

[0015] Furthermore, the drum spring is composed of a ring-shaped crown spring wire, and the crown spring wire has an "H" shape, with both ends fixedly connected to the socket.

[0016] Furthermore, the widths of the two ends of the crown spring wire are larger than the middle, and the elastic deformation in the middle is used to fix the pin.

[0017] Compared with the prior art, the utility model provides a connector for photovoltaic cables. By replacing the traditional positioning protrusion with an expansion-type stretching step, the traditional positioning protrusion can be integrally formed with the body of the pin or sleeve, thereby reducing manufacturing costs. The step-type positioning can increase the contact range with the plastic shell and increase the positioning accuracy of the terminal in the shell. Secondly, an interference platform and a positioning protrusion are added to the stop ring, which not only fixes the position of the stop ring, but also increases the friction and interference force between the stop ring and the plastic shell, thereby improving the effect of the stop ring. Finally, the crown spring wire of the drum spring is designed into an "H" shape, and the area of ​​the middle connecting part is increased, so that its contact area with the outer circle of the pin is increased, thereby increasing the gap contact resistance between the sleeve and the pin, and further improving the stability of the assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a schematic diagram of the assembly structure of the present utility model.

[0019] Figure 2 The following is a structural diagram of the anti-retraction ring of the present invention.

[0020] Figure 3 The schematic structural diagram of the plug sleeve of the present invention is shown.

[0021] Among them: 1. Pin, 2. Sleeve, 3. Retaining ring, 4. Positioning platform, 5. Ring body, 6. Retaining barb, 7. Positioning bump, 8. Interference platform, 9. Drum spring, 10. Crown spring wire. DETAILED DESCRIPTION

[0022] As shown in the figure, a connector for photovoltaic cables is composed of a pin 1 and a sleeve 2 connected to each other, and the pin 1 and the sleeve 2 are both provided with a stop ring 3 and a positioning platform 4; the stop ring 3 and the positioning platform 4 are both located at one end of the pin 1 and the sleeve 2, and cooperate with the external plastic shell; the stop ring 3 includes a ring body 5, a stop barb 6 and a positioning protrusion 7; the ring body 5 is annular in shape, arranged around the outer circle of the pin 1 or the sleeve 2, and is fixedly connected to the pin 1 or the sleeve 2; the stop barb 6 is located on the ring body 5, one end of which is fixedly connected to the ring body 5, and the other end extends outward in a divergent shape; the positioning protrusion 7 is located at one end of the stop barb 6, fixed on the ring body 5, and the position of the pin 1 or the sleeve 2 in the plastic shell is positioned by the positioning protrusion 7;

[0023] An interference platform 8 is provided at one end of the anti-recession barb 6. One end of the interference platform 8 is fixedly connected to the anti-recession barb 6, and the other end extends outward and is connected to the anti-recession barb 6 at an angle to enhance the interference with the plastic shell.

[0024] Furthermore, the anti-retraction barbs 6 and the positioning protrusions 7 correspond to each other one by one, and a plurality of them are provided and evenly distributed on the outer circle of the ring body 5.

[0025] Furthermore, the angle between the interference platform 8 and the anti-retraction barb 6 is not less than 100 degrees.

[0026] Furthermore, the positioning platform 4 is arranged on the outer circle of the pin 1 or the sleeve 2, located at one end of the pin 1 or the sleeve 2, and adopts an expansion stretching step, and can be integrally formed with the pin 1 or the sleeve 2.

[0027] Furthermore, the positioning platforms 4 are provided in plurality and are evenly distributed in a circular shape on the pins 1 or the sockets 2 .

[0028] Furthermore, each of the positioning platforms 4 is configured to have a multi-step shape, protruding step by step from both sides to the middle.

[0029] Furthermore, a drum spring 9 is provided on the socket 2 , and the drum spring 9 matches the outer circle of the pin 1 .

[0030] Furthermore, the drum spring 9 is composed of a ring-shaped crown spring wire 10. The crown spring wire 10 has an "H" shape, and both ends are fixedly connected to the socket 2.

[0031] Furthermore, the width of the crown spring wire 10 at both ends is larger than that in the middle, and the elastic deformation in the middle is used to fix the pin 1.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive technical solutions. Those skilled in the art should understand that modifications or equivalent replacements of the technical solutions of the present invention that do not depart from the purpose and scope of the technical solutions of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A photovoltaic cable connector, consisting of interconnected pins and sockets, characterized in that: The pin and the socket are both provided with a stop ring and a positioning platform; the stop ring and the positioning platform are both located at one end of the pin and the socket, and cooperate with the external plastic shell; the stop ring includes a ring body, a stop barb and a positioning protrusion; the ring body has an annular shape, is arranged around the outer circle of the pin or the socket, and is fixedly connected to the pin or the socket; the stop barb is located on the ring body, one end of which is fixedly connected to the ring body, and the other end extends outward in a divergent shape; the positioning protrusion is located at one end of the stop barb, fixed on the ring body, and the position of the pin or the socket in the plastic shell is positioned by the positioning protrusion; One end of the anti-recession barb is provided with an interference platform, one end of the interference platform is fixedly connected to the anti-recession barb, and one end extends outward and is connected to the anti-recession barb at an angle to enhance the interference with the plastic shell.

2. A photovoltaic cable connector according to claim 1, characterized in that: The anti-retraction barbs and the positioning protrusions correspond to each other one by one, and a plurality of barbs are provided and evenly distributed on the outer circle of the ring body.

3. A photovoltaic cable connector according to claim 1, characterized in that: The included angle between the interference platform and the anti-retraction barb is not less than 100 degrees.

4. A photovoltaic cable connector according to claim 1, characterized in that: The positioning platform is arranged on the outer circle of the pin or the sleeve, located at one end of the pin or the sleeve, and adopts an expansion stretching step, which can be integrally formed with the pin or the sleeve.

5. A photovoltaic cable connector according to claim 4, characterized in that: There are multiple positioning platforms, which are evenly distributed in an annular shape on the pins or sleeves.

6. A photovoltaic cable connector according to claim 5, characterized in that: Each of the positioning platforms is configured as a multi-step shape, protruding step by step from both sides to the middle.

7. The photovoltaic cable connector according to claim 1, characterized in that: The socket is provided with a drum spring, which matches the outer circle of the pin.

8. The photovoltaic cable connector according to claim 7, characterized in that: The drum spring is composed of a ring-shaped crown spring wire, and the crown spring wire is in an "H" shape, with both ends fixedly connected to the socket.

9. The photovoltaic cable connector according to claim 8, characterized in that: The widths of the two ends of the crown spring wire are larger than that of the middle, and the elastic deformation in the middle is used to fix the pin.

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