CN111244670A

CN111244670A - Photovoltaic connector

Info

Publication number: CN111244670A
Application number: CN202010170270.2A
Authority: CN
Inventors: 曾学仁; 孔振中; 葛春来; 俞利理
Original assignee: Zhejiang Twinsel Electronic Technology Co Ltd
Current assignee: Dongfang Risheng Ningbo New Material Co ltd
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2020-06-05

Abstract

The invention relates to a photovoltaic connector, which comprises a male end shell, a female end shell, a male terminal, a female terminal, a first fixing piece and a second fixing piece, wherein the first fixing piece is arranged in the male end shell; the inner end of the first fixing piece is connected with the male terminal, the inner wall of the male terminal shell is provided with a first axial stroke limiting piece on the inner side of the inner end of the first fixing piece, and the male terminal shell is provided with a first axial locking mechanism on the outer end side of the first fixing piece; the inner end of the second fixing piece is connected with the female terminal, a second axial stroke limiting piece is arranged on the inner side of the inner end of the second fixing piece on the inner wall of the female end shell, and a second axial locking mechanism is arranged on the outer end side of the second fixing piece on the female end shell. The mounting sets up independently, and parts such as public, female end casing, public, mould terminal, first, second mounting all are independent design, and the dismouting is more convenient each other, also is favorable to examining whether qualified of each part, guarantees the yields of product. Belong to photovoltaic connector device technical field.

Description

Photovoltaic connector

Technical Field

The invention belongs to the technical field of photovoltaic connectors, and particularly relates to a photovoltaic connector which greatly improves the qualification rate and reduces the use risk of components.

Background

With the development of society and the improvement of living standard, solar energy is widely applied as a clean energy. In the solar photovoltaic technology, solar radiation energy is converted into electric energy by a photoelectric conversion device, the photoelectric conversion device usually performs photoelectric conversion by using the photovoltaic effect principle of a semiconductor device, and a photovoltaic connector, also called a photovoltaic connector, is required in the photoelectric conversion process. Existing photovoltaic connectors have two types of structures:

the first type comprises a male end shell, a female end shell, a male terminal and a female terminal, wherein the male terminal is assembled in the male end shell, the female terminal is assembled in the female end shell, the male end shell is connected with the female end shell in an inserting way, the male terminal is connected with the female terminal in an inserting way, and the first type also comprises a corresponding conductive cable; wherein, male and female terminals are provided with a bulge which is matched with the groove on the inner wall of the shell to achieve effective fixation. The mode of protrusion and groove is adopted, and when the groove is formed by the mold, the mode of forced demoulding is directly adopted. Groove structure is inside the casing, and the product size is little again, can't judge it and whether exist badly, causes the defective products easily and flows to go in the market, produces bad hidden danger to photovoltaic module's normal use.

The second type comprises a male end shell, a female end shell, a male terminal and a female terminal, wherein the male terminal is assembled in the male end shell, the female terminal is assembled in the female end shell, the male end shell and the female end shell are connected in an inserted manner, the male terminal is connected with the female terminal in an inserted manner, and the second type also comprises a corresponding conductive cable. The fixing piece is welded on the inner wall of the shell body through ultrasonic welding or directly integrated with the shell body through the fixing piece. The ultrasonic welding process has a certain proportion of reject ratio due to the defects of the process; the integrated into one piece mode is because the product size is little again, is located the casing again inside, can't judge it and whether exist badly, causes the defective products to flow to market easily and goes, produces bad hidden danger to photovoltaic module's normal use.

The defects of the two structures corresponding to the existing photovoltaic connector exist.

Disclosure of Invention

The invention aims to: the photovoltaic connector cancels the original ultrasonic welding process and the original integrated forming mode, abandons the convex and concave groove matching mode and adopts the locking structure to improve the product yield.

The technical scheme adopted by the invention is as follows: a photovoltaic connector comprises a male end shell, a female end shell, a male terminal and a female terminal, wherein the male terminal is assembled in the male end shell, the female terminal is assembled in the female end shell, the male end shell is connected with the female end shell, the male terminal is connected with the female terminal in an inserting manner, and the photovoltaic connector also comprises a first fixing piece arranged in the male end shell and a second fixing piece arranged in the female end shell; the inner end of the first fixing piece is connected with the male terminal, the inner wall of the male terminal shell is provided with a first axial stroke limiting piece on the inner side of the inner end of the first fixing piece, and the male terminal shell is provided with a first axial locking mechanism on the outer end side of the first fixing piece; the inner end of the second fixing piece is connected with the female terminal, a second axial stroke limiting piece is arranged on the inner side of the inner end of the second fixing piece on the inner wall of the female end shell, and a second axial locking mechanism is arranged on the outer end side of the second fixing piece on the female end shell.

The first axial locking mechanism comprises a first nut and a first elastic sealing element, the first nut is screwed at the port of the male end head shell, the first elastic sealing element is pressed between the first nut and the end face of the male end head shell, and the first elastic sealing element is abutted against the outer end of the first fixing element; the first nut and the first elastic sealing element are axially provided with cable channels.

The second axial locking mechanism comprises a second nut and a second elastic sealing element, the second nut is screwed at the port of the female end head shell, the second elastic sealing element is pressed between the second nut and the end face of the female end head shell, and the second elastic sealing element is abutted against the outer end of the second fixing element; the second nut and the second elastic sealing element are axially provided with cable channels.

The end face of the male end shell is annularly provided with a plurality of first anti-back teeth with inclined planes, and the direction from the low point to the high point of the inclined planes of the first anti-back teeth is in the same direction as the locking direction of the first nut.

The end face of the female end head shell is annularly provided with a plurality of second anti-back teeth with inclined planes, and the direction from the low point to the high point of the inclined planes of the second anti-back teeth is in the same direction as the locking direction of the second nut.

The first axial stroke limiting part is a radial convex ring formed on the inner wall of the male end head shell, and the inner end of the first fixing part is abutted to the end face of the convex ring.

The second axial stroke limiting part is a radial convex ring formed on the inner wall of the female end head shell, and the inner end of the second fixing part is abutted against the end face of the convex ring.

The male end shell and the female end shell are connected in an inserting mode, and a sealing ring is arranged at the joint of the male end shell and the female end shell.

The inner port of the first fixing piece is provided with a plurality of grooves, and the inner end hole of the first fixing piece is conical; the male terminal outer wall ring is equipped with a plurality of first slide wedge, and first slide wedge terminal surface offsets with first mounting inner end face.

A plurality of grooves are formed in the inner end opening of the second fixing piece, and the inner end hole of the second fixing piece is conical; the outer wall of the female terminal is annularly provided with a plurality of second inclined wedges, and the end faces of the second inclined wedges are abutted to the inner end face of the second fixing piece.

The invention has the technical effects that: according to the invention, the first fixing piece and the second fixing piece limit the male terminal and the female terminal between the first fixing piece and the second fixing piece, and meanwhile, the fixing piece is limited in the shell by the nut in the axial direction. First, the second mounting sets up independently, and parts such as public, female end casing, public, mould terminal, first, second mounting all are independent design, and the dismouting is more convenient each other, also is favorable to examining whether each part is qualified, has guaranteed the yields of product, ensures photovoltaic connector's reliability.

Preferably, the first axial locking mechanism comprises a first nut and a first elastic sealing element, the first nut is screwed on the port of the male end head shell, the first elastic sealing element is pressed between the first nut and the end face of the male end head shell, and the first elastic sealing element is abutted against the outer end of the first fixing element; the first nut and the first elastic sealing element are axially provided with cable channels. Adopt the nut as the control body, the simple operation adopts first elastic sealing element as compressing tightly the piece, can effectively realize outside compressing tightly first mounting, first elastic sealing element compressive deformation, and the parcel has ensured the leakproofness between cable and the first elastic sealing element outside running through the cable of crossing.

Preferably, the second axial locking mechanism comprises a second nut and a second elastic sealing element, the second nut is screwed on the port of the female end head shell, the second elastic sealing element is pressed between the second nut and the end face of the female end head shell, and the second elastic sealing element abuts against the outer end of the second fixing element; the second nut and the second elastic sealing element are axially provided with cable channels. Adopt the nut as the control body, the simple operation adopts second elastic sealing element as compressing tightly the piece, can effectively realize outside compressing tightly of second mounting, second elastic sealing element compressive deformation, and the parcel has ensured the leakproofness between cable and the second elastic sealing element outside running through the cable of crossing.

As an improvement, the end face of the male end head shell is annularly provided with a plurality of anti-withdrawal teeth with inclined planes, and the direction from the low point to the high point of the inclined planes of the anti-withdrawal teeth is the same as the locking direction of the first nut. The anti-back teeth have reverse resistance to the first elastic sealing element, so that the first screw cap can be effectively prevented from loosening.

As an improvement, the end face of the female end head shell is annularly provided with a plurality of anti-withdrawal teeth with inclined planes, and the direction from the low point to the high point of the inclined planes of the anti-withdrawal teeth is the same as the locking direction of the second nut. The anti-back teeth have reverse resistance to the second elastic sealing element, so that the second screw cap can be effectively prevented from loosening.

Preferably, the first axial stroke limiting part is a radial convex ring formed on the inner wall of the male end housing, and the inner end of the first fixing part abuts against the end face of the convex ring. The travel limit of the inner end of the first fixing piece is ensured.

Preferably, the second axial stroke limiting element is a radial convex ring formed on the inner wall of the female end housing, and the inner end of the second fixing element abuts against the end face of the convex ring. The travel limit of the inner end of the second fixing piece is ensured.

As an improvement, the male end head shell and the female end head shell are connected in an inserting mode, and a sealing ring is arranged at the joint of the male end head shell and the female end head shell. The sealing performance of the product is improved.

Preferably, the inner port of the first fixing piece is provided with a plurality of grooves, and the inner hole of the first fixing piece is conical; the male terminal outer wall ring is equipped with a plurality of first slide wedge, and first slide wedge terminal surface offsets with first mounting inner end face. The conical structure is adopted, the assembly is convenient, and the limiting is realized in the unidirectional direction.

Preferably, a plurality of grooves are formed in the inner end opening of the second fixing piece, and the inner end hole of the second fixing piece is conical; the outer wall of the female terminal is annularly provided with a plurality of second inclined wedges, and the end faces of the second inclined wedges are abutted to the inner end face of the second fixing piece. The conical structure is adopted, the assembly is convenient, and the limiting is realized in the unidirectional direction.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is a cross-sectional view a-a of fig. 2 of the present invention.

Fig. 4 is a schematic view of the female tip housing of the present invention.

Fig. 5 is a schematic view of a male tip housing of the present invention.

Fig. 6 is an exploded view of the present invention.

In the figure, 1, a male end housing, 1.1, a first anti-back tooth, 2, a female end housing, 2.1, a second anti-back tooth, 3, a male terminal, 3.1, a first wedge, 4, a female terminal, 4.1, a second wedge, 5, a first fixing piece, 6, a second fixing piece, 7, a first axial stroke limiting piece, 8, a second axial stroke limiting piece, 9.1, a first nut, 9.2, a first elastic sealing piece, 10.1, a second nut, 10.2, a second elastic sealing piece, 11 and a sealing ring.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

As shown in fig. 1-6: the embodiment provides a photovoltaic connector, including public end casing 1, female end casing 2, public terminal 3, female terminal 4, public terminal 3 assembles in public end casing 1, and female terminal 4 assembles in female end casing 2, and public end casing 1 links to each other with female end casing 2, and public terminal 3 links to each other with female terminal 4 grafting, and above-mentioned part is prior art, no longer gives unnecessary details here. The invention also comprises a first fixing piece 5 arranged in the male end head shell 1 and a second fixing piece 6 arranged in the female end head shell 2; the first fixing piece 5 and the second fixing piece 6 are both tubular; the inner end of the first fixing member 5 is connected to the male terminal 3, and in the embodiment, the inner port of the first fixing member 5 is provided with a plurality of grooves, so that the inner port of the first fixing member 5 can have a certain deformation. The inner end hole of the first fixing member 5 is conical, and the male terminal 3 can conveniently penetrate through the conical design, so in this embodiment, the outer wall of the male terminal 3 is annularly provided with a plurality of first tapered wedges 3.1, the first tapered wedges 3.1 are combined to form a cone-like body, and after the male terminal 3 penetrates through the inner end of the first fixing member 5, the end surfaces of the first tapered wedges 3.1 are abutted to the end surfaces in the first fixing member 5. The first fixing piece 5 is connected with the male terminal 3, and the first fixing piece 5 also realizes axial limitation on the male terminal 3. Similarly, a plurality of grooves are formed in the inner port of the second fixing piece 6, and the inner hole of the second fixing piece 6 is conical; the outer wall of the female terminal 4 is annularly provided with a plurality of second inclined wedges 4.1, and the end faces of the second inclined wedges 4.1 are abutted to the inner end face of the second fixing piece 6. The structure is used for connecting and axially limiting the male terminal 3 and the female terminal 4 through the first fixing piece 5 and the second fixing piece 6.

The inner wall of the male end shell 1 is provided with a first axial stroke limiting part 7 at the inner side of the inner end of the first fixing part 5, the first axial stroke limiting part 7 means that the inner wall of the male end shell 1 forms a radial convex ring, and the inner end of the first fixing part 5 is abutted against the end face of the convex ring, so as to limit the stroke of the inner end side of the first fixing part 5. The male end shell 1 is provided with a first axial locking mechanism at the outer end side of the first fixing piece 5, and the first axial stroke limiting piece 7 and the first axial locking mechanism realize axial locking and limiting of the first fixing piece 5; the inner end of the second fixing piece 6 is connected with the female terminal 4, a second axial stroke limiting piece 8 is arranged on the inner side of the inner end of the second fixing piece 6 on the inner wall of the female end shell 2, the second axial stroke limiting piece 8 is a radial convex ring formed on the inner wall of the female end shell 2, the inner end of the second fixing piece 6 abuts against the end face of the convex ring, and the purpose is to limit the radial stroke of the inner end of the second fixing piece 5. And a second axial locking mechanism is arranged on the outer end side of the second fixing piece 6 of the female end shell 2. The second fixing part 6 is axially locked and limited by the second axial stroke limiting part 8 and the second axial locking mechanism.

In this embodiment, the first axial locking mechanism includes a first nut 9.1 and a first elastic sealing element 9.2, the first nut 9.1 is screwed on the port of the male end housing 1, the first elastic sealing element 9.2 is pressed between the first nut 9.1 and the end face of the male end housing 1, and the first elastic sealing element 9.2 is abutted against the outer end of the first fixing element 5; the first elastic sealing element 9.2 simultaneously abuts against the first fixing element 5 and the end face of the male end housing 1. The first nut 9.1 and the first elastic sealing element 9.2 are both provided with cable channels (through holes) in the axial direction, so that cables can conveniently pass through the cable channels.

In this embodiment, the second axial locking mechanism includes a second nut 10.1 and a second elastic sealing element 10.2, the second nut 10.1 is screwed on the port of the female end housing 2, the second elastic sealing element is pressed between the second nut 10.1 and the end face of the female end housing 2, and the second elastic sealing element abuts against the outer end of the second fixing element 6; the second elastic sealing element 10.2 simultaneously abuts against the second fixing element 6 and the end face of the female terminal housing 2. The second nut 10.1 and the second elastic sealing element are both provided with cable channels (through holes) in the axial direction, so that cables can conveniently pass through the cable channels.

In this embodiment, the end surface of the male end shell 1 is annularly provided with a plurality of first anti-back teeth 1.1 with inclined surfaces, and the direction from the low point to the high point of the inclined surfaces of the first anti-back teeth 1.1 is the same as the locking direction of the first nut 9.1, which means that the screwing direction of the first nut 9.1 is the direction from the low point to the high point of the inclined surfaces of the first anti-back teeth 1.1. With this inclination, when the first nut 9.1 is tightened, the first elastic sealing member 9.2 follows the direction of the inclination (i.e., from low to high), and the friction force is small, and the resistance to the tightening is small. When the first nut 9.1 tends to loosen, the first nut 9.1 will drive the first elastic sealing element 9.2 to have a tendency, and at this time, the first elastic sealing element 9.2 is against the direction of the inclined plane (i.e. from high to low), and the resistance is large, and the first axial locking mechanism is not easy to loosen due to the design of the structure.

In this embodiment, the end face of the female end housing 2 is annularly provided with a plurality of second anti-back teeth 2.1 with inclined planes, and the direction from the low point to the high point of the inclined planes of the second anti-back teeth 2.1 is the same as the locking direction of the second nut 10.1. The principle is the same as above.

The male end shell 1 and the female end shell 2 are connected in an inserting mode, and a sealing ring 11 is arranged at the joint of the male end shell and the female end shell. The female end shell 2 is provided with an annular groove, and the sealing ring 11 is matched at the annular groove.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed.

Claims

1. The utility model provides a photovoltaic connector, includes public end casing (1), female end casing (2), public terminal (3), female terminal (4), public terminal (3) assembly is in public end casing (1), and female terminal (4) assembly is in female end casing (2), and public end casing (1) links to each other with female end casing (2), and public terminal (3) link to each other with female terminal (4) grafting, its characterized in that: the connector also comprises a first fixing piece (5) arranged in the male end head shell (1) and a second fixing piece (6) arranged in the female end head shell (2); the inner end of the first fixing piece (5) is connected with the male terminal (3), a first axial stroke limiting piece (7) is arranged on the inner side of the inner end of the first fixing piece (5) on the inner wall of the male end shell (1), and a first axial locking mechanism is arranged on the outer end side of the first fixing piece (5) on the male end shell (1); the inner end of the second fixing piece (6) is connected with the female terminal (4), a second axial stroke limiting piece (8) is arranged on the inner side of the inner end of the second fixing piece (6) on the inner wall of the female end shell (2), and a second axial locking mechanism is arranged on the outer end side of the second fixing piece (6) on the female end shell (2).

2. A photovoltaic connector in accordance with claim 1, wherein: the first axial locking mechanism comprises a first screw cap (9.1) and a first elastic sealing element (9.2), the first screw cap (9.1) is in threaded connection with the port of the male end shell (1), the first elastic sealing element (9.2) is pressed between the first screw cap (9.1) and the end face of the male end shell (1), and the first elastic sealing element (9.2) is abutted to the outer end of the first fixing element (5); the first nut (9.1) and the first elastic sealing element (9.2) are both provided with a cable channel axially.

3. A photovoltaic connector in accordance with claim 1, wherein: the second axial locking mechanism comprises a second screw cap (10.1) and a second elastic sealing element, the second screw cap (10.1) is in threaded connection with the port of the female end head shell (2), the second elastic sealing element is pressed between the second screw cap (10.1) and the end face of the female end head shell (2), and the second elastic sealing element abuts against the outer end of the second fixing element (6); the second nut (10.1) and the second elastic sealing element are both provided with cable channels in the axial direction.

4. A photovoltaic connector in accordance with claim 2, wherein: the end face of the male end shell (1) is annularly provided with a plurality of first anti-withdrawal teeth (1.1) with inclined planes, and the direction from the low point to the high point of the inclined planes of the first anti-withdrawal teeth (1.1) is in the same direction as the locking direction of the first screw cap (9.1).

5. A photovoltaic connector in accordance with claim 3, wherein: the end face of the female end shell (2) is annularly provided with a plurality of second anti-withdrawal teeth (2.1) with inclined planes, and the direction from the low point to the high point of the inclined planes of the second anti-withdrawal teeth (2.1) is in the same direction as the locking direction of the second screw cap (10.1).

6. A photovoltaic connector in accordance with claim 1, wherein: the first axial stroke limiting part (7) is a radial convex ring formed on the inner wall of the male end shell (1), and the inner end of the first fixing part (5) is abutted against the end face of the convex ring.

7. A photovoltaic connector in accordance with claim 1, wherein: the second axial stroke limiting part (8) is a radial convex ring formed on the inner wall of the female end shell (2), and the inner end of the second fixing part (6) is abutted against the end face of the convex ring.

8. A photovoltaic connector in accordance with claim 1, wherein: the male end shell (1) is connected with the female end shell (2) in an inserting mode, and a sealing ring (11) is arranged at the joint of the male end shell and the female end shell.

9. A photovoltaic connector in accordance with claim 1, wherein: a plurality of grooves are formed in the inner end opening of the first fixing piece (5), and an inner end hole of the first fixing piece (5) is conical; the outer wall of the male terminal (3) is annularly provided with a plurality of first inclined wedges (3.1), and the end faces of the first inclined wedges (3.1) are abutted to the inner end face of the first fixing piece (5).

10. A photovoltaic connector in accordance with claim 1, wherein: a plurality of grooves are formed in the inner end opening of the second fixing piece (6), and an inner end hole of the second fixing piece (6) is conical; the outer wall of the female terminal (4) is annularly provided with a plurality of second inclined wedges (4.1), and the end faces of the second inclined wedges (4.1) are abutted to the inner end face of the second fixing piece (6).