Photovoltaic connector with stable connection

Abstract

The photovoltaic connector comprises a male head and a female head which are plugged in a matching manner, the female head is slidably connected with a movable sleeve, two sides of the female head are provided with metal elastic sheets which are distributed in a splayed manner, one end of each metal elastic sheet is fixed on the outer wall of the female head, and the other end of each metal elastic sheet is fixed on the outer wall of the female head. One end of the movable sleeve is provided with a metal elastic piece, the other end of the metal elastic piece is provided with a hook claw, the outer wall of the male head is provided with a claw groove, the end of the movable sleeve abuts against the outer wall of the metal elastic piece, the hook claw is clamped in the claw groove, the female head is sleeved with a spring, and the two ends of the spring are connected to the end, back to the male head, of the movable sleeve and the outer wall of the female head respectively. A limiting ring is fixed to the outer wall of the female head, an avoiding groove is formed in the limiting ring, the spring is always in a compressed state, and a sealing assembly is arranged between the contact faces of the male head and the female head. The connecting structure is simple in structure, stable in connection, not prone to connection loosening caused by the external effect and good in sealing performance.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a photovoltaic connector with a stable connection. Background Art

[0002] The photovoltaic connector with a stable connection is one of the components widely used in the photovoltaic field. It is responsible for the electrical connection between different photovoltaic modules. With the continuous improvement of people's living standards, solar photovoltaic power generation systems are developing rapidly. The photovoltaic connector with a stable connection is an important component in the solar photovoltaic power generation system, which is used to connect multiple solar cell modules into a system. From the structural point of view, the photovoltaic connector with a stable connection is mainly composed of a first connector (female connector) and a second connector (male connector) that cooperate with each other, which can be easily plugged and unplugged. Since the photovoltaic connector with a stable connection is used in harsh outdoor environments for a long time, the stability of the connection and its own sealing are extremely high. Therefore, the design of a reliable and safe photovoltaic connector with a stable connection has become a concern of the industry.

[0003] Application No. CN202221498553.0 discloses a photovoltaic connector with a stable connection, including a first connector and a second connector that are matched and plugged in. The first connector and the second connector both adopt a combined structure, and a waterproof cover is added to the parts where the first and second connectors lead out the wires, and a sealing ring is added at the plug-in place of the first and second connectors to obtain better combined sealing and improve the waterproof effect; at the same time, an anti-dropping clamping part is provided on the first connector, which is used to connect with the plug-in claw of the second connector to achieve plug-in anti-dropping of the first and second connectors and increase the axial pulling force of the plug-in, and the second contact part of the second terminal is provided with an expandable waist drum part, so that the waist drum part clamps the first contact part of the first terminal, increases the contact area and contact force, and has sufficient current, stable and reliable transmission. The utility model has a simple structure, is easy to make and assemble, and has a stable structure after combination, which ensures the reliability of the connector for long-term use and a long service life. The outer side of the anti-dropping clamp is not protected, and the plug-in claws are easy to fall off when impacted or pressed. The elastic force generated by the compression of the sealing ring will push the hollow plug out of the first insulating seat, thereby affecting the connection stability and sealing of the connector. Therefore, the utility model proposes a photovoltaic connector with a stable connection. Utility Model Content

[0004] In order to overcome the defects in the prior art, the embodiments of the present invention provide a method to solve the problems raised in the above background technology.

[0005] The embodiment of the present application discloses: a photovoltaic connector with a stable connection, comprising a male head and a female head for matching insertion, the male head being provided with a columnar plug-in portion, the female head being provided with a slot matching the plug-in portion, the female head being slidably connected with a movable sleeve, both sides of the female head being provided with metal spring sheets distributed in an eight-shaped shape, one end of the metal spring sheet being fixed to the outer wall of the female head, the other end of the metal spring sheet being provided with a hook claw, the outer wall of the male head being provided with a claw groove, the end of the movable sleeve being against the outer wall of the metal spring sheet, the hook claw being stuck in the claw groove, a spring being sleeved on the female head, the two ends of the spring being respectively connected to an end of the movable sleeve facing away from the male head and the outer wall of the female head, a limiting ring being fixed to the outer wall of the female head, the limiting ring being provided with an avoidance groove, the spring being always in a compressed state, and a sealing assembly being provided between the contact surfaces of the male head and the female head.

[0006] Preferably, the sealing assembly includes an annular sealing side plate perpendicular to the end face of the male head, the end face of the female head is provided with a sealing ring mounting groove, a sealing ring with a U-shaped cross-section is fixed in the sealing ring mounting groove, sealing lips extending to the bottom of the U-shape are provided on both sides of the sealing ring, and the sealing side plate is inserted between the two sealing lips.

[0007] Preferably, the sealing lip is provided with two layers.

[0008] Preferably, the plug-in portion and the slot are respectively connected with matched plug-in terminals, the terminal is connected with one end of the wire, the male head and the female head are both provided with wire holes, the male head and the female head are both provided with wire fixing components, the wire fixing components include a rubber ring mounting groove provided on the inner side of the wire hole opening, a rubber ring is installed in the rubber ring mounting groove, a plurality of rubber ring clamps are distributed at the opening of the wire hole, the male head and the female head are both connected with nuts through threads, the end of the nut away from the plug-in portion is provided with a conical cylinder with a large end facing the side of the plug-in portion, and the end of the rubber ring clamp is against the inner wall of the conical cylinder.

[0009] The beneficial effects of the utility model are as follows: the utility model has a simple structure, a stable connection, is not easily loosened due to external impact, and has good sealing performance.

[0010] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 It is a schematic diagram of the partial structure of a photovoltaic connector with a stable connection.

[0013] Figure 2 It is a schematic diagram of the metal shrapnel structure.

[0014] Figure 3 yes Figure 1 Enlarged view of point A in the middle.

[0015] The figure markings of the above drawings are: 1. male head; 2. female head; 3. plug-in part; 4. slot; 5. movable sleeve; 6. metal spring; 7. hook; 8. claw groove; 9. spring; 10. limit ring; 11. sealing side plate; 12. sealing ring; 13. sealing lip; 14. rubber ring; 15. rubber ring clamp; 16. nut; 17. conical cylinder. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1 A photovoltaic connector with a stable connection includes a male connector 1 and a female connector 2 for mating connection.

[0018] The male connector 1 is provided with a columnar plug portion 3.

[0019] The female head 2 is provided with a slot 4 matching the plug-in portion 3, and the female head 2 is slidably connected with a movable sleeve 5. Metal springs 6 distributed in an eight-shaped shape are provided on both sides of the female head 2, one end of the metal spring 6 is fixed to the outer wall of the female head 2, and the other end of the metal spring 6 is provided with a hook 7. The outer wall of the male head 1 is provided with a claw groove 8, and the end of the movable sleeve 5 is against the outer wall of the metal spring 6, and the hook 7 is stuck in the claw groove 8. A spring 9 is sleeved on the female head 2, and the two ends of the spring 9 are respectively connected to the end of the movable sleeve 5 facing away from the male head 1 and the outer wall of the female head 2, a limiting ring 10 is fixed to the outer wall of the female head 2, and an avoidance groove is provided on the limiting ring 10. The spring 9 is always in a compressed state, and a sealing component is provided between the contact surfaces of the male head 1 and the female head 2.

[0020] The sealing assembly includes an annular sealing side plate 11 perpendicular to the end face of the male head, and the end face of the female head is provided with a sealing ring installation groove, in which a sealing ring 12 with a U-shaped cross-section is fixed, and sealing lips 13 extending to the bottom of the U-shape are provided on both sides of the sealing ring 12, and the sealing side plate 11 is inserted between the two sealing lips 13.

[0021] The sealing lip 13 is provided with two layers.

[0022] The plug-in portion 3 and the slot are respectively connected with matching plug-in terminals, the terminals are connected with one end of the wire, the male head 1 and the female head 2 are both provided with wire holes, the male head 1 and the female head 2 are both provided with wire fixing components, the wire fixing components include a rubber ring mounting groove provided on the inner side of the opening of the wire hole, a rubber ring 14 is installed in the rubber ring mounting groove, a plurality of rubber ring clamps 15 are distributed at the opening of the wire hole, the male head and the female head are both connected with nuts 16 through threads, the end of the nut 16 away from the plug-in portion 3 is provided with a conical cylinder 17 with a large end facing the side of the plug-in portion 3, and the end of the rubber ring clamp 15 is against the inner wall of the conical cylinder 17.

[0023] The beneficial effects of the present application are as follows: when the male head 1 and the female head 2 need to be separated, the movable sleeve 5 is pushed axially, and the metal spring sheet 6 is restored under the action of elastic force, so that the hook claw 7 withdraws from the claw groove 8, thereby facilitating the separation of the male head 1 and the female head 2, and the two sealing lips 13 form a double seal on the inner and outer sides of the sealing side plate 11 to enhance the sealing performance.

[0024] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A photovoltaic connector with a stable connection, comprising a male head and a female head for matching plugging, wherein the male head is provided with a columnar plug-in portion, the female head is provided with a slot matching the plug-in portion, the plug-in portion is inserted into the slot, and is characterized in that: The female head is slidably connected with a movable sleeve, and metal springs distributed in an eight-shaped shape are arranged on both sides of the female head. One end of the metal spring is fixed to the outer wall of the female head, and the other end of the metal spring is provided with a hook claw. The outer wall of the male head is provided with a claw groove, and the end of the movable sleeve is against the outer wall of the metal spring, and the hook claw is stuck in the claw groove. A spring is sleeved on the female head, and the two ends of the spring are respectively connected to the end of the movable sleeve facing away from the male head and the outer wall of the female head. A limiting ring is fixed to the outer wall of the female head, and an avoidance groove is provided on the limiting ring. The spring is always in a compressed state, and a sealing assembly is provided between the contact surfaces of the male head and the female head.

2. A photovoltaic connector with a stable connection according to claim 1, characterized in that: The sealing assembly includes an annular sealing side plate perpendicular to the end face of the male head, and the end face of the female head is provided with a sealing ring installation groove, in which a sealing ring with a U-shaped cross-section is fixed, and sealing lips extending to the bottom of the U-shape are provided on both sides of the sealing ring, and the sealing side plate is inserted between the two sealing lips.

3. A photovoltaic connector with a stable connection according to claim 2, characterized in that: The sealing lip is provided with two layers.

4. A photovoltaic connector with a stable connection according to claim 1, characterized in that: The plug-in portion and the slot are respectively connected with matched plug-in terminals, the terminal is connected with one end of the wire, the male head and the female head are both provided with wire holes, the male head and the female head are both provided with wire fixing components, the wire fixing components include a rubber ring installation groove provided on the inner side of the wire hole opening, a rubber ring is installed in the rubber ring installation groove, a plurality of rubber ring clamps are distributed at the opening of the wire hole, the male head and the female head are both connected with nuts through threads, the end of the nut away from the plug-in portion is provided with a conical cylinder with a large end facing the plug-in portion, and the end of the rubber ring clamp is against the inner wall of the conical cylinder.

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