A kind of photovoltaic connector

Abstract

A photovoltaic connector of the present invention includes a male end housing, a female end housing, male terminals, and female terminals, and further includes a first fixing member disposed in the male end housing and a second fixing member disposed in the female end housing; the inner end of the first fixing member is connected to the male terminals, a first axial travel limiting member is provided on the inner wall of the male end housing inside the inner end of the first fixing member, and a first axial locking mechanism is provided on the outer end side of the male end housing for the first fixing member; the inner end of the second fixing member is connected to the female terminals, a second axial travel limiting member is provided on the inner wall of the female end housing inside the inner end of the second fixing member, and a second axial locking mechanism is provided on the outer end side of the female end housing for the second fixing member. The fixing members are independently provided, and components such as the male and female end housings, male and female terminals, first and second fixing members are all independently designed, which is more convenient for disassembly and assembly with each other, and is also beneficial to inspecting whether each component is qualified, ensuring the yield rate of the product. It belongs to the technical field of photovoltaic connector devices.

Description

Technical Field

[0001] The present invention belongs to the technical field of photovoltaic connectors, and particularly relates to a photovoltaic connector that greatly improves the qualification rate and reduces the use risk of components. Background Art

[0002] With the development of society and the improvement of living standards, solar energy, as a clean energy source, has been widely used. Solar photovoltaic technology converts solar radiation energy into electrical energy through a photoelectric conversion device. The photoelectric conversion device usually utilizes the photovoltaic effect principle of semiconductor devices for photoelectric conversion, and a photovoltaic connector, also known as a PV connector, is required during the photoelectric conversion process. There are two types of structures for existing photovoltaic connectors:

[0003] The first type includes a male end housing, a female end housing, male terminals, and female terminals. The male terminals are assembled in the male end housing, the female terminals are assembled in the female end housing, the male end housing and the female end housing are plugged and connected, the male terminals and the female terminals are plugged and connected, and corresponding conductive cables are also included. Among them, there are protrusions on the male and female terminals, which are matched with the grooves on the inner wall of the housing to achieve effective fixation. By using the protrusion and groove method, when forming the grooves in the mold, the strong ejection method is generally directly used. The groove structure is inside the housing, and the product size is small, making it impossible to determine whether there are defects, which easily causes defective products to flow into the market and poses potential risks to the normal use of photovoltaic modules.

[0004] The second type includes a male end housing, a female end housing, male terminals, and female terminals. The male terminals are assembled in the male end housing, the female terminals are assembled in the female end housing, the male end housing and the female end housing are plugged and connected, the male terminals and the female terminals are plugged and connected, and corresponding conductive cables are also included. Among them, there are also two fixing parts. The male and female terminals are respectively equipped with fixing parts, and the fixing parts are ultrasonically welded to the inner wall of the housing or the fixing parts are directly integrally formed with the housing. Due to the defects of its own process, the ultrasonic welding process has a certain percentage of defective rate; in the integral forming method, since the product size is small and it is located inside the housing, it is impossible to determine whether there are defects, which easily causes defective products to flow into the market and poses potential risks to the normal use of photovoltaic modules.

[0005] The above are the deficiencies existing in the two corresponding structures of existing photovoltaic connectors. Summary of the Invention

[0006] The purpose of the present invention is to provide a photovoltaic connector that cancels the original ultrasonic welding process, integral forming method, abandons the protrusion and groove matching method, and uses a locking structure to improve the product qualification rate.

[0007] The technical solution adopted by the present invention is as follows: A photovoltaic connector includes a male end housing, a female end housing, male terminals, and female terminals. The male terminals are assembled in the male end housing, and the female terminals are assembled in the female end housing. The male end housing is connected to the female end housing, and the male terminals are plugged and connected to the female terminals. It further includes a first fixing member disposed in the male end housing and a second fixing member disposed in the female end housing. The inner end of the first fixing member is connected to the male terminal. An axially first travel limiting member is provided on the inner wall of the male end housing inside the inner end of the first fixing member. The male end housing is provided with a first axial locking mechanism on the outer end side of the first fixing member. The inner end of the second fixing member is connected to the female terminal. An axially second travel limiting member is provided on the inner wall of the female end housing inside the inner end of the second fixing member. The female end housing is provided with a second axial locking mechanism on the outer end side of the second fixing member.

[0008] The first axial locking mechanism includes a first nut and a first elastic seal. The first nut is screwed onto the port of the male end housing. The first elastic seal is pressed between the first nut and the end face of the male end housing. The first elastic seal abuts against the outer end of the first fixing member. A cable channel is axially provided in both the first nut and the first elastic seal.

[0009] The second axial locking mechanism includes a second nut and a second elastic seal. The second nut is screwed onto the port of the female end housing. The second elastic seal is pressed between the second nut and the end face of the female end housing. The second elastic seal abuts against the outer end of the second fixing member. A cable channel is axially provided in both the second nut and the second elastic seal.

[0010] A plurality of first anti-loosening teeth with inclined surfaces are annularly provided on the end face of the male end housing. The direction from the low point to the high point of the inclined surface of the first anti-loosening teeth is the same as the locking direction of the first nut.

[0011] A plurality of second anti-loosening teeth with inclined surfaces are annularly provided on the end face of the female end housing. The direction from the low point to the high point of the inclined surface of the second anti-loosening teeth is the same as the locking direction of the second nut.

[0012] The first axial travel limiting member refers to a radially protruding ring formed on the inner wall of the male end housing. The inner end of the first fixing member abuts against the end face of the protruding ring.

[0013] The second axial travel limiting member refers to a radially protruding ring formed on the inner wall of the female end housing. The inner end of the second fixing member abuts against the end face of the protruding ring.

[0014] The male end housing and the female end housing are connected by plugging, and a sealing ring is provided at the connection between the two.

[0015] A plurality of grooves are provided at the inner port of the first fixing member and the inner end hole of the first fixing member is conical. A plurality of first wedges are annularly provided on the outer wall of the male terminal. The end face of the first wedge abuts against the inner end face of the first fixing member.

[0016] The inner port of the second fixing member is provided with several grooves and the inner end hole of the second fixing member is conical; several second wedges are annularly arranged on the outer wall of the female terminal, and the end surface of the second wedge abuts against the inner end surface of the second fixing member.

[0017] The technical effects of the present invention are as follows: The first and second fixing members of the present invention limit the male and female terminals between them, and at the same time, the fixing members are axially limited in the housing by the nuts. This structure ensures the axial consistency of the first and second fixing members and the male and female terminals. The first and second fixing members are independently arranged, and components such as the male and female end housings, the male and female terminals, the first and second fixing members are all independently designed, which is more convenient for disassembly and assembly with each other, and is also conducive to inspecting whether each component is qualified, ensuring the yield rate of the product, and ensuring the reliability of the photovoltaic connector.

[0018] Preferably, the first axial locking mechanism includes a first nut and a first elastic seal. The first nut is screwed on the port of the male end housing, the first elastic seal is pressed between the first nut and the end surface of the male end housing, and the first elastic seal abuts against the outer end of the first fixing member; a cable channel is axially provided in both the first nut and the first elastic seal. Using the nut as the control body, the operation is convenient. Using the first elastic seal as the pressing member, in addition to effectively pressing the first fixing member, the first elastic seal is compressed and deformed to wrap around the cable passing through, ensuring the sealing between the cable and the first elastic seal.

[0019] Preferably, the second axial locking mechanism includes a second nut and a second elastic seal. The second nut is screwed on the port of the female end housing, the second elastic seal is pressed between the second nut and the end surface of the female end housing, and the second elastic seal abuts against the outer end of the second fixing member; a cable channel is axially provided in both the second nut and the second elastic seal. Using the nut as the control body, the operation is convenient. Using the second elastic seal as the pressing member, in addition to effectively pressing the second fixing member, the second elastic seal is compressed and deformed to wrap around the cable passing through, ensuring the sealing between the cable and the second elastic seal.

[0020] As an improvement, several anti-loosening teeth with inclined surfaces are annularly arranged on the end surface of the male end housing, and the direction from the low point to the high point of the inclined surface of the anti-loosening teeth is the same as the locking direction of the first nut. The anti-loosening teeth have a reverse resistance to the first elastic seal, which can effectively prevent the first nut from loosening.

[0021] As an improvement, several anti-loosening teeth with inclined surfaces are annularly arranged on the end surface of the female end housing, and the direction from the low point to the high point of the inclined surface of the anti-loosening teeth is the same as the locking direction of the second nut. The anti-loosening teeth have a reverse resistance to the second elastic seal, which can effectively prevent the second nut from loosening.

[0022] Preferably, the first axial stroke limiting member refers to a radial convex ring formed on the inner wall of the male end housing, and the inner end of the first fixing member abuts against the end face of the convex ring, ensuring the stroke limit of the inner end of the first fixing member.

[0023] Preferably, the second axial stroke limiting member refers to a radial convex ring formed on the inner wall of the female end housing, and the inner end of the second fixing member abuts against the end face of the convex ring, ensuring the stroke limit of the inner end of the second fixing member.

[0024] As an improvement, the male end housing and the female end housing are connected by plugging, and a sealing ring is provided at the connection between the two, improving the tightness of the product.

[0025] Preferably, a plurality of grooves are provided at the inner port of the first fixing member and the inner end hole of the first fixing member is conical; a plurality of first inclined wedges are annularly provided on the outer wall of the male terminal, and the end face of the first inclined wedge abuts against the inner end face of the first fixing member. The conical structure is adopted for convenient assembly and limit in a single direction.

[0026] Preferably, a plurality of grooves are provided at the inner port of the second fixing member and the inner end hole of the second fixing member is conical; a plurality of second inclined wedges are annularly provided on the outer wall of the female terminal, and the end face of the second inclined wedge abuts against the inner end face of the second fixing member. The conical structure is adopted for convenient assembly and limit in a single direction. Brief Description of the Drawings

[0027] Figure 1 is a perspective view of the present invention.

[0028] Figure 2 is a top view of the present invention.

[0029] Figure 3 is the present invention Figure 2 sectional view taken along line A-A in

[0030] Figure 4 is a schematic diagram of the female end housing of the present invention.

[0031] Figure 5 is a schematic diagram of the male end housing of the present invention.

[0032] Figure 6 is an exploded view of the present invention.

[0033] In the figure, 1. male end housing, 1.1. first anti-retraction tooth, 2. female end housing, 2.1. second anti-retraction tooth, 3. male terminal, 3.1. first inclined wedge, 4. female terminal, 4.1. second inclined wedge, 5. first fixing member, 6. second fixing member, 7. first axial stroke limiting member, 8. second axial stroke limiting member, 9.1. first nut, 9.2. first elastic seal, 10.1. second nut, 10.2. second elastic seal, 11. sealing ring. Detailed Description of the Invention

[0034] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and other obvious variations can be conceived by those skilled in the art.

[0035] As Figures 1 - 6 shown: Embodiment, a photovoltaic connector, comprising a male end housing 1, a female end housing 2, a male terminal 3, and a female terminal 4. The male terminal 3 is assembled in the male end housing 1, the female terminal 4 is assembled in the female end housing 2, the male end housing 1 is connected to the female end housing 2, and the male terminal 3 is plugged and connected to the female terminal 4. The above components are all prior arts and will not be elaborated here. The present invention further includes a first fixing member 5 disposed in the male end housing 1 and a second fixing member 6 disposed in the female end housing 2; both the first fixing member 5 and the second fixing member 6 are tubular; the inner end of the first fixing member 5 is connected to the male terminal 3. In the embodiment, a plurality of slots are provided at the inner port of the first fixing member 5, and the purpose is that the inner port of the first fixing member 5 can have a certain amount of deformation. The inner end hole of the first fixing member 5 is conical. The conical design facilitates the male terminal 3 to pass through. Therefore, in this embodiment, a plurality of first inclined wedges 3.1 are provided on the outer wall of the male terminal 3, and all the first inclined wedges 3.1 are combined to form a conical body. After the male terminal 3 passes through the inner end of the first fixing member 5, the end face of the first inclined wedge 3.1 abuts against the inner end face of the first fixing member 5. The first fixing member 5 realizes the connection with the male terminal 3, and at the same time, the first fixing member 5 also realizes the axial limit of the male terminal 3. Similarly, a plurality of slots are provided at the inner port of the second fixing member 6 and the inner end hole of the second fixing member 6 is conical; a plurality of second inclined wedges 4.1 are provided on the outer wall of the female terminal 4, and the end face of the second inclined wedge 4.1 abuts against the inner end face of the second fixing member 6. The above structure realizes the connection and axial limit of the male terminal 3 and the female terminal 4 through the first fixing member 5 and the second fixing member 6.

[0036] An inner wall of the male end housing 1 is provided with a first axial stroke limiting member 7 inside the inner end of the first fixing member 5. The first axial stroke limiting member 7 refers to a radial convex ring formed on the inner wall of the male end housing 1, and the inner end of the first fixing member 5 abuts against the end face of the convex ring, and the purpose is to perform stroke limit on the inner end side of the first fixing member 5. The male end housing 1 is provided with a first axial locking mechanism on the outer end side of the first fixing member 5. The axial locking limit of the first fixing member 5 is realized through the first axial stroke limiting member 7 and the first axial locking mechanism; the inner end of the second fixing member 6 is connected to the female terminal 4, and an inner wall of the female end housing 2 is provided with a second axial stroke limiting member 8 inside the inner end of the second fixing member 6. The second axial stroke limiting member 8 refers to a radial convex ring formed on the inner wall of the female end housing 2, and the inner end of the second fixing member 6 abuts against the end face of the convex ring, and the purpose is to perform radial stroke limit on the inner end of the second fixing member 5. The female end housing 2 is provided with a second axial locking mechanism on the outer end side of the second fixing member 6. The axial locking limit of the second fixing member 6 is realized through the second axial stroke limiting member 8 and the second axial locking mechanism.

[0037] In this embodiment, the first axial locking mechanism includes a first nut 9.1 and a first elastic seal 9.2. The first nut 9.1 is screwed onto the port of the male end head housing 1. The first elastic seal 9.2 is pressed between the first nut 9.1 and the end face of the male end head housing 1, and the first elastic seal 9.2 abuts against the outer end of the first fixing member 5; the first elastic seal 9.2 abuts against both the first fixing member 5 and the end face of the male end head housing 1 at the same time. The first nut 9.1 and the first elastic seal 9.2 are both axially provided with cable channels (through holes) to facilitate the passing of the cable.

[0038] In this embodiment, the second axial locking mechanism includes a second nut 10.1 and a second elastic seal 10.2. The second nut 10.1 is screwed onto the port of the female end head housing 2. The second elastic seal is pressed between the second nut 10.1 and the end face of the female end head housing 2, and the second elastic seal abuts against the outer end of the second fixing member 6; the second elastic seal 10.2 abuts against both the second fixing member 6 and the end face of the female end head housing 2 at the same time. The second nut 10.1 and the second elastic seal are both axially provided with cable channels (through holes) to facilitate the passing of the cable.

[0039] In this embodiment, a plurality of first anti-loosening teeth 1.1 with inclined surfaces are annularly arranged on the end face of the male end head housing 1. The direction from the low point to the high point of the inclined surface of the first anti-loosening teeth 1.1 is the same as the locking direction of the first nut 9.1, which means that the tightening direction of the first nut 9.1 is the direction from the low point to the high point of the inclined surface of the first anti-loosening teeth 1.1. With this inclined direction, when the first nut 9.1 is tightened, the first elastic seal 9.2 follows the inclined surface direction (i.e., from low to high), with small friction and small resistance. When the first nut 9.1 has a tendency to loosen, the first nut 9.1 will drive the first elastic seal 9.2 to have a tendency. At this time, the first elastic seal 9.2 is against the inclined surface direction (i.e., from high to low), with large resistance. With the design of this structure, the first axial locking mechanism is not easy to loosen.

[0040] In this embodiment, a plurality of second anti-loosening teeth 2.1 with inclined surfaces are annularly arranged on the end face of the female end head housing 2. The direction from the low point to the high point of the inclined surface of the second anti-loosening teeth 2.1 is the same as the locking direction of the second nut 10.1. The principle is the same as above.

[0041] The male end head housing 1 and the female end head housing 2 are connected by plugging, and a sealing ring 11 is provided at the connection between the two. The female end head housing 2 is provided with an annular groove, and the sealing ring 11 is fitted in the annular groove.

[0042] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, various changes and improvements will occur to the present invention, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A photovoltaic connector, comprising a male end housing (1), a female end housing (2), a male terminal (3), and a female terminal (4). The male terminal (3) is assembled in the male end housing (1), the female terminal (4) is assembled in the female end housing (2), the male end housing (1) is connected to the female end housing (2), and the male terminal (3) is inserted and connected to the female terminal (4). It is characterized in that: It further includes a first fixing member (5) disposed within the male terminal housing (1) and a second fixing member (6) disposed within the female terminal housing (2); the inner end of the first fixing member (5) is connected to the male terminal (3), the inner wall of the male terminal housing (1) is provided with a first axial stroke limiting member (7) inside the inner end of the first fixing member (5), and the male terminal housing (1) is provided with a first axial locking mechanism on the outer end side of the first fixing member (5); the inner end of the second fixing member (6) is connected to the female terminal (4), the inner wall of the female terminal housing (2) is provided with a second axial stroke limiting member (8) inside the inner end of the second fixing member (6), and the female terminal housing (2) is provided with a second axial locking mechanism on the outer end side of the second fixing member (6); The first axial locking mechanism includes a first nut (9.1) and a first elastic seal (9.2). The first nut (9.1) is screwed onto the port of the male terminal housing (1), the first elastic seal (9.2) is pressed between the first nut (9.1) and the end face of the male terminal housing (1), and the first elastic seal (9.2) abuts against the outer end of the first fixing member (5); both the first nut (9.1) and the first elastic seal (9.2) are provided with cable channels axially; The end face of the male terminal housing (1) is annularly provided with a number of first anti-retreat teeth (1.1) with inclined surfaces, and the direction from the low point to the high point of the inclined surface of the first anti-retreat teeth (1.1) is the same as the locking direction of the first nut (9.1); The second axial locking mechanism includes a second nut (10.1) and a second elastic seal. The second nut (10.1) is screwed onto the port of the female terminal housing (2), the second elastic seal is pressed between the second nut (10.1) and the end face of the female terminal housing (2), and the second elastic seal abuts against the outer end of the second fixing member (6); both the second nut (10.1) and the second elastic seal are provided with cable channels axially; The end face of the female terminal housing (2) is annularly provided with a number of second anti-retreat teeth (2.1) with inclined surfaces, and the direction from the low point to the high point of the inclined surface of the second anti-retreat teeth (2.1) is the same as the locking direction of the second nut (10.1).

2. The photovoltaic connector according to claim 1, characterized in that: The first axial stroke limiting member (7) refers to a radial convex ring formed on the inner wall of the male terminal housing (1), and the inner end of the first fixing member (5) abuts against the end face of the convex ring.

3. A photovoltaic connector according to claim 1, characterized in that: The second axial stroke limiting member (8) refers to a radial convex ring formed on the inner wall of the female terminal housing (2), and the inner end of the second fixing member (6) abuts against the end face of the convex ring.

4. A photovoltaic connector according to claim 1, characterized in that: The male terminal housing (1) and the female terminal housing (2) are connected by plugging, and a sealing ring (11) is provided at the connection between the two.

5. A photovoltaic connector according to claim 1, characterized in that: The inner port of the first fixing member (5) is provided with a number of grooves and the inner end hole of the first fixing member (5) is conical; a number of first wedges (3.1) are annularly provided on the outer wall of the male terminal (3), and the end face of the first wedge (3.1) abuts against the inner end face of the first fixing member (5).

6. A photovoltaic connector according to claim 1, characterized in that: The inner port of the second fixing member (6) is provided with a number of grooves and the inner end hole of the second fixing member (6) is conical; a number of second wedges (4.1) are annularly provided on the outer wall of the female terminal (4), and the end face of the second wedge (4.1) abuts against the inner end face of the second fixing member (6).

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