A connector for preventing breakdown and water

Abstract

This invention discloses a breakdown-resistant and waterproof connector, belonging to the field of photovoltaic system connector technology. Through the design of the pin and connector structure, this invention creates air gaps of a certain width between the positive pin and the positive connector, and between the negative pin and the negative connector, forming air isolation and providing protection against breakdown. Simultaneously, the positive and negative connectors are respectively processed into inner and outer layers. The inner layer mates with the pin, while the outer layer contacts the air, forming an air gap of a certain width between the inner and outer layers. This air isolation between the metal components in the inner layer and the plastic components in the outer layer further protects against breakdown. This structure also prevents water from absorbing through the plastic material of the connector's exterior, thus preventing excessive moisture from seeping into the connector's interior where it contacts the metal components. Furthermore, this invention includes a plug between the waterproof ring and the cable. When the nut is tightened, the plug is compressed by the waterproof ring, securing the cable and providing waterproofing and cable reinforcement.

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic system connector technology, and particularly relates to a connector with anti-breakdown and waterproof functions. Background Technology

[0002] Connectors are connection devices in photovoltaic systems that transmit current and provide safety protection. Breakdown resistance and waterproofing are key aspects of connector structural design. Existing connector shells are generally made of nylon plastic, which offers advantages such as weather resistance and acid / alkali resistance, but is prone to water absorption, leading to a decrease in insulation performance. Furthermore, existing connectors have no gap between the external plastic connector and the internal metal pins. When the connector is in a humid environment or immersed in water, the external plastic material absorbs water, causing significant moisture to seep into the connector's internal contact points with the metal components, leading to electrical breakdown. On the other hand, the connector pin section is the area with the highest risk of high-voltage breakdown; the lack of a clear gap between the pins and the connector in existing connectors makes these areas weak points prone to breakdown. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a novel structural design that is easy to manufacture and can improve electrical safety level and reliability, as well as being puncture-proof and waterproof.

[0004] The technical solution of the present invention is as follows:

[0005] A breakdown-resistant and waterproof connector includes a positive terminal, a positive pin, a negative terminal, and a negative pin; the positive pin is embedded in the positive terminal and the negative pin is embedded in the negative terminal.

[0006] There is a first air gap between the positive electrode pin and the positive electrode connector;

[0007] The positive terminal connector includes an inner layer and an outer layer. The inner layer mates with the positive pin, and the outer layer is in contact with air. There is a second air gap between the inner and outer layers of the positive terminal connector.

[0008] There is a third air gap between the negative electrode pin and the negative electrode connector;

[0009] The negative terminal connector includes an inner layer and an outer layer. The inner layer mates with the negative terminal pin, and the outer layer is in contact with air. There is a fourth air gap between the inner and outer layers of the negative terminal connector.

[0010] Furthermore, the connector is divided into a positive connector and a negative connector; when the positive connector and the negative connector are mated, the end of the positive connector is inserted into the negative connector, and at the same time, the positive pin in the positive connector is mated with the negative pin in the negative connector.

[0011] Furthermore, anti-reverse rings are provided between the positive electrode pin and the positive electrode connector, and between the negative electrode pin and the negative electrode connector, respectively. The anti-reverse rings are assembled with the positive electrode pin and the negative electrode pin, or are integrally formed. The elastic part of the anti-reverse ring contacts the inside of the positive electrode connector and the negative electrode connector to form a reverse buckle. The positive electrode pin and the negative electrode pin are metal parts.

[0012] Furthermore, the positive electrode pin is riveted to the positive electrode cable; the negative electrode pin is riveted to the negative electrode cable.

[0013] Furthermore, a waterproof ring is nested on the positive cable and the positive connector, and the positive connector is connected to the nut by threads; a waterproof ring is nested on the negative cable and the negative connector, and the negative connector is connected to the nut by threads.

[0014] Furthermore, plugs are provided between the positive electrode cable and the waterproof ring, and between the negative electrode cable and the waterproof ring, respectively.

[0015] Furthermore, the positive terminal connector, negative terminal connector, and nut are all made of plastic, while the plug is made of hard material.

[0016] Furthermore, the waterproof ring is made of silicone.

[0017] Furthermore, the positive terminal connector has an O-ring fitted on the end that is inserted into the negative terminal connector, and the O-ring is a silicone component.

[0018] The beneficial technical effects of this invention are:

[0019] As can be seen from the above technical solution, the present invention mainly achieves air isolation and protection against breakdown by designing the pins and connectors to create air gaps of a certain width between the positive pin and the positive connector, and between the negative pin and the negative connector. Simultaneously, the connector is processed into an inner layer and an outer layer. The inner layer mates with the pins, while the outer layer contacts the air. The air gap between the inner and outer layers creates air isolation between the metal pins and the anti-reverse ring in the inner layer and the plastic connector in the outer layer, achieving the same effect. Furthermore, this structure prevents water from absorbing from the external plastic material of the connector, thus avoiding excessive water seepage into the connector's internal contact points with the metal parts. Additionally, a plug is placed between the waterproof ring and the cable. When the nut is tightened, the plug is compressed by the waterproof ring, securing the cable and providing waterproofing and cable reinforcement.

[0020] The advantages of the present invention will be set forth in the following detailed description, and in some respects will become apparent from the description or may be learned by practice of the invention. Attached Figure Description

[0021] Figure 1 This is an illustration of a positive and negative connector pair.

[0022] Figure 2 This is a picture of the finished positive connector.

[0023] Figure 3 This is a picture of the finished negative connector.

[0024] Figure 4 This is an exploded view of the finished positive connector.

[0025] Figure 5 This is an exploded view of the finished negative connector.

[0026] Figure 6 This is a cross-sectional view of the positive terminal connector.

[0027] Figure 7 This is a cross-sectional view of the negative connector.

[0028] Figure 8 This is a diagram of a waterproof cable fixing structure.

[0029] In the diagram: 101--positive connector, 102--positive pin, 103--locking ring, 104--waterproof ring, 105--plug, 106--nut, 107--positive cable, 108--O-ring, 109--first air gap, 110--second air gap, 201--negative connector, 202--negative pin, 203--locking ring, 204--waterproof ring, 205--plug, 206--nut, 207--negative cable, 209--third air gap, 210--fourth air gap.

[0030] The advantages of the present invention will be set forth in the following detailed description, and in some respects will become apparent from the description or may be learned by practice of the invention. Detailed Implementation

[0031] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0032] See Figures 1 to 3 The connector consists of two parts: a positive connector and a negative connector. See also... Figure 4At the positive connector, the positive pin 102 is assembled with the anti-reverse ring 103, or the positive pin 102 and the anti-reverse ring 103 are integrally stamped and then embedded in the positive connector 101; alternatively, the anti-reverse ring 103 can be inserted into the positive connector 101 first, and then the positive pin 102 can be inserted. The positive pin 102 is a metal part, and the anti-reverse ring 103 can be a non-conductive part. The function of the anti-reverse ring 103 is to make contact between the elastic part of the anti-reverse ring 103 and the inside of the positive connector 101 to form a snap, thereby positioning the positive pin 102. The positive pin 102 has a conductive function; one end is responsible for interlocking with the other polarity pin, and the other end is responsible for connecting to the cable. The O-ring 108 is fitted onto the mating end of the positive connector 101, and the function of the O-ring 108 is to provide a seal when the positive connector 101 and the negative connector 201 are mated. The positive cable 107 is riveted to the cable insertion end of the positive pin 102. A waterproof ring 104 is nested between the positive cable 107 and the positive connector 101. A nut 106 is threadedly fastened to the positive connector 101. A plug 105 is positioned between the waterproof ring 104 and the positive cable 107. The plug 105, when the nut 106 is tightened, is compressed by the waterproof ring 104, securing the positive cable 107 and providing a secure connection. The positive connector 101 and nut 106 are made of plastic; the waterproof ring 104 and O-ring 108 are made of silicone; and the plug 105 is a rigid component, such as plastic or metal. See also... Figure 5 At the negative connector, the assembly method is basically the same as that of the positive connector, except for the reduction of one O-ring, and will not be described again. Figures 1 to 5 It can be seen that when the positive connector and the negative connector are plugged in, the end of the positive connector 101 is inserted into the negative connector 201, and at the same time, the positive pin 102 in the positive connector 101 is plugged into the negative pin 202 in the negative connector 201.

[0033] See Figure 6 The positive pin section is the area with the highest risk of high-voltage breakdown. This invention incorporates a breakdown protection structure here: the diameter of the positive pin 102 is partially reduced, and the gap between the positive pin 102 and the positive connector 101 is increased, forming a first air gap 109 between the positive pin 102 and the positive connector 101, thus providing isolation and protection against breakdown. The positive cable insertion end is also the area with the highest risk of high-voltage breakdown. This invention incorporates a breakdown protection structure here: the positive connector 101 is processed into an inner layer and an outer layer. The inner layer mates with the positive pin 102, while the outer layer is in contact with air. A second air gap 110 is formed between the inner and outer layers, isolating the metal positive pin 102 and the anti-reverse ring 103 in the inner layer from the plastic positive connector 101 in the outer layer, thus providing isolation and protection against breakdown. Simultaneously, the above structure also prevents moisture from absorbing water from the external plastic material of the connector, thus preventing excessive water seepage into the connector's internal parts where it contacts the metal components.

[0034] See Figure 7 The negative electrode connector is at the insertion end, which is at the highest risk of being broken down by high voltage. This invention incorporates a breakdown protection structure here: the inner wall of the negative connector 201 is thinned, the gap between the negative connector 201 and the negative electrode pin 202 is increased, and the negative electrode pin 202 is only partially connected to the plastic part of the negative connector 201. A third air gap 209 is formed in most of the area between the negative electrode pin 202 and the negative connector 201, providing isolation and protection against breakdown. The insertion end of the negative cable is also at the highest risk of being broken down by high voltage. This invention incorporates a breakdown protection structure here: the negative connector 201 is processed into an inner layer and an outer layer. The inner layer mates with the negative electrode pin 202, while the outer layer is in contact with air. A fourth air gap 210 is formed between the inner and outer layers, isolating the metal negative electrode pin 202 and the anti-reverse ring 203 in the inner layer from the plastic negative electrode connector 201 in the outer layer, providing isolation and protection against breakdown. At the same time, the above structure can also prevent water from absorbing water from the plastic material on the outside of the connector and causing a large amount of water to seep into the part of the connector that contacts the metal parts.

[0035] See Figure 8 Combination Figure 6 and Figure 7 This invention incorporates waterproof wiring structures within both the positive and negative connectors. See also... Figure 8 Taking the positive connector as an example, a plug 105 is placed between the waterproof ring 104 and the positive cable 107. When the nut 106 is tightened, the plug 105 is squeezed by the waterproof ring 104 and secures the positive cable 107, thus providing waterproofing and cable fixing. Similarly, a plug 205 is placed inside the negative connector to serve the same purpose.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A breakdown-resistant and waterproof photovoltaic connector, comprising a positive terminal, a positive pin, a negative terminal, and a negative pin; the positive pin is embedded within the positive terminal, and the negative pin is embedded within the negative terminal; characterized in that: A retaining ring is provided between the positive electrode pin and the positive electrode connector, and between the negative electrode pin and the negative electrode connector. The retaining ring is assembled with the positive electrode pin and the negative electrode pin, or is integrally formed. There is a first air gap between the positive electrode pin and the positive electrode connector for isolation and protection against breakdown. The positive connector includes an inner layer and an outer layer. The inner layer mates with the positive pin, and the outer layer is in contact with air. There is a second air gap between the inner and outer layers of the positive connector to prevent the insertion end of the positive cable from being punctured by high voltage. There is a third air gap between the negative electrode pin and the negative electrode connector to prevent the mating end of the negative electrode pin from being broken down by high voltage. The negative connector includes an inner layer and an outer layer. The inner layer mates with the negative pin, while the outer layer is in contact with air. There is a fourth air gap between the inner and outer layers to prevent the insertion end of the negative cable from being punctured by high voltage.

2. The anti-breakdown and waterproof photovoltaic connector according to claim 1, characterized in that: The connector is divided into a positive connector and a negative connector. When the positive connector and the negative connector are mated, the end of the positive connector is inserted into the negative connector, and at the same time, the positive pin in the positive connector is mated with the negative pin in the negative connector.

3. The anti-breakdown and waterproof photovoltaic connector according to claim 1, characterized in that: The elastic part of the anti-locking ring contacts the inside of the positive and negative terminals, forming a reverse snap; the positive and negative terminals are metal parts.

4. The anti-breakdown and waterproof photovoltaic connector according to claim 1, characterized in that: The positive electrode pin is riveted to the positive electrode cable; the negative electrode pin is riveted to the negative electrode cable.

5. A breakdown-resistant and waterproof photovoltaic connector according to claim 4, characterized in that: The positive cable and positive connector are fitted with a waterproof ring, and the positive connector is connected to the nut by a thread; the negative cable and negative connector are fitted with a waterproof ring, and the negative connector is connected to the nut by a thread.

6. A breakdown-resistant and waterproof photovoltaic connector according to claim 5, characterized in that: A plug is provided between the positive cable and the waterproof ring, and between the negative cable and the waterproof ring.

7. A breakdown-resistant and waterproof photovoltaic connector according to claim 6, characterized in that: The positive terminal connector, negative terminal connector, and nut are all made of plastic, while the plug is made of hard material.

8. A breakdown-resistant and waterproof photovoltaic connector according to claim 6, characterized in that: The waterproof ring is made of silicone.

9. A breakdown-resistant and waterproof photovoltaic connector according to claim 2, characterized in that: The positive terminal connector has an O-ring fitted on the end that is inserted into the negative terminal connector. The O-ring is made of silicone.

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