Combined photovoltaic connector

Abstract

The invention discloses a combined photovoltaic connector, which relates to the field of photovoltaic connectors and comprises a first shell and a second shell, a plurality of first terminal pieces are annularly distributed on the inner wall of the first shell, a plurality of second terminal pieces are annularly distributed on the end face of the second shell, and the first shell and the second shell are inserted oppositely to enable the first terminal pieces and the second terminal pieces to be attached and contacted. The binding face of the first terminal piece and the second terminal piece is parallel to the tangent line of the first shell, a sleeve shell is arranged on the outer side of the second shell, and the sleeve shell is in threaded connection with the outer wall of the first shell and used for axially pressing the first shell and the second shell. The first terminal pieces and the second terminal pieces of the multiple sets of lines are integrated on the surfaces of the first shell and the second shell which are paired, the first shell and the second shell are connected in an inserted mode or separated, the first terminal pieces and the second terminal pieces are made to be in contact or disconnected, synchronous control over connection of all the lines is achieved, the size of line connection is reduced, and the cost is reduced. And the maintenance operation is convenient.

Description

Technical Field

[0001] The invention relates to the field of photovoltaic connectors, and in particular to a combined photovoltaic connector. Background Art

[0002] Photovoltaic connectors are an important part of photovoltaic power generation systems and are used to connect photovoltaic panels, inverters, combiners and other equipment. Plug-in photovoltaic connectors are more common. The terminals are connected conductively by plugging in. Each line is connected by a set of plug-in terminals. Due to the dense distribution of photovoltaic facilities, more connectors are required. In order to facilitate line laying and reduce the complexity of line connection, multi-port photovoltaic connectors are used to integrate and connect multiple lines. Multi-port photovoltaic connectors are constructed of multiple independent connectors in one piece, which results in a larger size. Although the complexity of wiring is reduced, the lines still need to be connected one by one during line laying and subsequent maintenance. Summary of the invention

[0003] In order to make up for the deficiencies of the prior art, the purpose of the present invention is to provide a combined photovoltaic connector to solve the problem that the traditional multi-port photovoltaic connector is large in size and each terminal needs to be plugged in independently, which causes inconvenience in use.

[0004] In order to solve the problems of the prior art, the technical solution of the present invention is as follows:

[0005] A combined photovoltaic connector comprises a first shell and a second shell, wherein a plurality of first terminal pieces are distributed annularly on the inner wall of the first shell, and a plurality of second terminal pieces are distributed annularly on the end surface of the second shell, the first shell and the second shell are plugged into each other so that the first terminal pieces and the second terminal pieces are in close contact with each other, and the contacting surfaces of the first terminal pieces and the second terminal pieces are parallel to the tangent line of the first shell, and a sleeve is provided on the outer side of the second shell, and the sleeve is threadedly connected to the outer wall of the first shell for axially pressing the first shell and the second shell;

[0006] A pressing assembly is disposed in a cavity formed by the first shell and the second shell being inserted into each other, and the pressing assembly applies radial pressing force to the fitting part of each first terminal piece and the second terminal piece.

[0007] Preferably, a plurality of embedding grooves are distributed in an annular manner on the inner wall of the first shell, and the embedding grooves extend axially to the port position of the first shell, the first terminal piece is arranged in the embedding grooves, and a plurality of plug handles are arranged in an annular manner on the end face of the second shell, the second terminal piece penetrates the plug handles, and the plug handles are aligned and plugged into the embedding grooves one by one to align the first terminal piece with the second terminal piece.

[0008] Preferably, the extrusion assembly includes a first swivel seat connected to the inner end surface of the first shell and a touch handle arranged at the port position of the first shell, a plurality of hinged rods are distributed in a ring between the first swivel seat and the touch handle, the hinged rod has two rotatably connected swivel arms, and the two ends of the hinged rod are rotatably connected to the first swivel seat and the touch plate respectively, the rotating part of the hinged rod is arched outward and is connected to the touch handle, and the touch handle radially squeezes the fitting part of the first terminal piece and the second terminal piece.

[0009] Preferably, the first swivel seat is threadedly connected to the inner end surface of the first shell.

[0010] Preferably, the extrusion assembly includes a second swivel seat arranged on the inner end surface of the first shell and a conical platform A arranged on the inner end surface of the second shell, a plurality of rocker arms are distributed in a ring around the second swivel seat, the rocker arms are elastically rotatably connected to the second swivel seat through a torsion spring, an extrusion body is provided at the end of the rocker arm, and the conical surface of the conical platform A stretches the extrusion body from the middle to the surrounding areas, so that the extrusion body radially squeezes the fitting parts of the first terminal piece and the second terminal piece.

[0011] Preferably, an axially extending stud is fixed to the inner end surface of the second shell, and the conical platform A is threadedly connected to the stud.

[0012] Preferably, the extrusion assembly includes a conical platform B arranged on the inner end surface of the first shell and a third swivel seat arranged on the inner end surface of the second shell, and a plurality of arc pressure rods are distributed in an annular manner around the third swivel seat. The arc pressure rods are elastically rotatably connected to the third swivel seat through a torsion spring. The conical surface of the conical platform B contacts the arc pressure rod from the middle to the surrounding areas, so that the arc pressure rod rotates and expands, and radially squeezes the fitting part of the first terminal piece and the second terminal piece.

[0013] Preferably, the extrusion assembly includes a flexible sphere, which is arranged in a chamber formed by the first shell and the second shell. The flexible sphere radially squeezes the fitting parts of each first terminal piece and the second terminal piece, and the distance between the inner end surface of the first shell and the inner end surface of the second shell is the same as the diameter of the flexible sphere.

[0014] Preferably, the first terminal piece is bent to form a U-shaped gap, the second terminal piece is inserted into the U-shaped gap, so that the inner and outer sides of the second terminal piece are in contact with the first terminal piece, and the end of the first terminal piece is folded outward to form a first bent portion.

[0015] Preferably, the end of the second terminal piece is bent 180° to form twice the thickness of the pasted piece, and the end of the second terminal piece is further folded into the pasted gap to form a second bent portion. The second bent portion supports the pasted gap of the second terminal piece, so that the end thickness of the second terminal piece has a compressible space.

[0016] Compared with the prior art, the advantages of the present invention are as follows:

[0017] 1. The present invention integrates the first terminal pieces and the second terminal pieces of multiple groups of circuits on the surface of a pair of first shells and second shells, plugs the first shell and the second shell into or separates them, and makes the first terminal piece contact or disconnect with the second terminal piece, so as to realize synchronous control of the connection of all circuits, which not only reduces the volume of circuit connection, but also facilitates maintenance operation.

[0018] 2. The present invention arranges an extrusion assembly in the cavities of the first shell and the second shell. When the first shell and the second shell are connected, the extrusion assembly simultaneously applies radial extrusion force to all the fitting parts of the first terminal piece and the second terminal piece, thereby maintaining a stable connection between the first terminal piece and the second terminal piece and reducing the resistance of the conductive parts.

[0019] 3. Through the support of the second bent portion, the thickness of the folded end of the second terminal piece is slightly larger than the U-shaped gap to form an interference fit, and the gap of the second terminal piece can be compressed, so that the second terminal piece can be stably clamped in the U-shaped gap, and both sides of the second terminal piece are in contact with the first terminal piece, which has a good contact and conductive effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a structural schematic diagram of a first embodiment of an extrusion assembly of the present invention;

[0022] Figure 3 This is a schematic structural diagram of a second embodiment of an extrusion assembly of the present invention;

[0023] Figure 4 This is a schematic structural diagram of a third embodiment of an extrusion assembly of the present invention;

[0024] Figure 5 This is a schematic structural diagram of a fourth embodiment of an extrusion assembly of the present invention;

[0025] Figure 6 It is a schematic diagram of the adaptation structure of the first terminal piece and the second terminal piece of the present invention.

[0026] Figure numerals: 1, first shell; 11, embedding groove; 2, second shell; 21, plug handle; 3, sleeve; 4, first terminal piece; 41, first bending portion; 5, second terminal piece; 51, second bending portion; 6, hinged rod; 61, touch handle; 62, first swivel seat; 63, touch plate; 7, rocker rod; 71, extrusion body; 72, conical platform A; 73, stud; 74, second swivel seat; 8, arc pressure rod; 81, conical platform B; 82, third swivel seat; 9, flexible sphere. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] like Figure 1 As shown, the combined photovoltaic connector integrates the terminals of multiple circuits into one, and has a first shell 1 and a second shell 2. The main body of the first shell 1 is cylindrical, and the first shell 1 has a cylindrical chamber that penetrates the front end surface. The circuit is connected to the tail end of the first shell 1. A plurality of embedded grooves 11 are evenly arranged around the chamber of the first shell 1. The embedded grooves 11 extend along the axial direction and penetrate the front end surface of the first shell 1. A first terminal piece 4 is arranged in each embedded groove 11. The tail end of the first terminal piece 4 extends to the rear of the first shell 1 to independently connect a circuit.

[0029] The tail end of the second housing 2 is connected to a circuit, and a plurality of plug handles 21 are distributed in an annular manner on the front end surface of the second housing 2. An axially extending second terminal piece 5 is provided through the surface of each plug handle 21. The second terminal piece 5 extends to the tail end of the second housing 2 and is independently connected to a circuit;

[0030] The outer side of the second shell 2 is sleeved with a sleeve 3, the sleeve 3 covers the edge of the second shell 2, the inner wall of the sleeve 3 has an internal thread, and the outer side of the front end of the first shell 1 has an external thread;

[0031] When the circuit is plugged in, the first housing 1 and the second housing 2 are axially plugged in, the second terminal piece 5 is flat against the first terminal piece 4 along the embedding groove 11 until the insertion handle 21 is inserted into the embedding groove 11, and then the sleeve 3 is threadedly connected with the first housing 1 to axially connect the first housing 1 and the second housing 2, so as to keep the second terminal piece 5 in stable contact with the first terminal piece 4, and realize the synchronous conduction connection of multiple groups of circuits;

[0032] The threaded connection between the sleeve 3 and the first shell 1 is also used to seal the joint between the first shell 1 and the second shell 2, and has waterproof and dustproof effects.

[0033] like Figure 6 As shown, the first terminal piece 4 is bent to form a U-shaped gap, the end of the first terminal piece 4 is folded outward to form a first bent portion 41, the end of the second terminal piece 5 is bent 180° to form a double thickness of the pasting, and the end of the second terminal piece 5 is further folded into the pasting gap to form a second bent portion 51, and the second bent portion 51 supports the pasting gap of the second terminal piece 5, so that the end thickness of the second terminal piece 5 has a compressible space;

[0034] The first bent portion 41 is configured to guide the second terminal piece 5 to be inserted into the U-shaped gap of the first terminal piece 4. The second bent portion 51 supports the folded end portion of the second terminal piece 5 to have a thickness slightly larger than the U-shaped gap to form an interference fit. The abutting gap of the second terminal piece 5 can be compressed, so that the second terminal piece 5 can be stably clamped in the U-shaped gap. Both sides of the second terminal piece 5 are in contact with the first terminal piece 4, thereby achieving a good contact and conductive effect.

[0035] The fitting surfaces of the first terminal piece 4 and the second terminal piece 5 are parallel to the tangent of the first housing 1. In order to maintain stable contact between the first terminal piece 4 and the second terminal piece 5 and reduce the resistance at the contact position, pressure needs to be applied to the connection between the first terminal piece 4 and the second terminal piece 5. A radial extrusion force is applied to each fitting position of the first terminal piece 4 and the second terminal piece 5 by using an extrusion assembly;

[0036] Embodiment 1

[0037] like Figure 2 As shown, the extrusion assembly includes a first rotating seat 62 and a touch handle 61 which are coaxially arranged. A spring is connected between the first rotating seat 62 and the touch handle 61. The first rotating seat 62 is connected to the inner end surface of the first shell 1. The touch handle 61 is located at the port of the first shell 1. A plurality of hinged rods 6 are distributed in an annular manner between the first rotating seat 62 and the touch handle 61. The hinged rod 6 is composed of two rotating arms connected in rotation. The two ends of the hinged rod 6 are respectively connected in rotation to the first rotating seat 62 and the touch plate 63. The rotating portion of the hinged rod 6 is arched outward, and a cylindrical touch handle 61 is coaxially arranged at the rotating portion of the hinged rod 6.

[0038] When the first shell 1 and the second shell 2 are axially pressed and connected, the contact handle 61 is squeezed by the end face of the second shell 2, so that the contact handle 61 overcomes the elastic force and approaches the first rotating seat 62, and the distance between the first rotating seat 62 and the contact handle 61 is reduced, so that the rotating part of each hinge rod 6 is arched outward by an increased amplitude, so that the contact handle 61 radially squeezes the fitting part of the first terminal piece 4 and the second terminal piece 5, so as to keep the first terminal piece 4 and the second terminal piece 5 in stable contact.

[0039] The first rotating seat 62 is threadedly connected to the inner end surface of the first shell 1, and the extrusion assembly can be disassembled as a whole.

[0040] Embodiment 2

[0041] like Figure 3 As shown, the extrusion assembly includes an axially aligned second rotating seat 74 and a conical platform A72, the second rotating seat 74 is connected to the inner end surface of the first shell 1, the conical platform A72 is connected to the inner end surface of the second shell 2, the small diameter end of the conical platform A72 points to the first shell 1, and a plurality of swing rods 7 are distributed in an annular manner around the second rotating seat 74. The swing rods 7 are elastically rotatably connected to the second rotating seat 74 through a torsion spring, and the end of the swing rod 7 has a spherical extrusion body 71;

[0042] When the first shell 1 and the second shell 2 are not connected, all the rocker arms 7 are in a retracted state. When the first shell 1 and the second shell 2 are axially pressed and connected, the small diameter end of the conical stage A72 is inserted between the extrusion bodies 71, and the conical surface of the conical stage A72 stretches the extrusion body 71 from the middle to the surrounding areas, so that the extrusion body 71 radially squeezes the fitting part of the first terminal piece 4 and the second terminal piece 5, thereby keeping the first terminal piece 4 and the second terminal piece 5 stably connected.

[0043] An axially extending stud 73 is fixed to the inner end surface of the second shell 2, and the conical platform A72 is threadedly connected to the stud 73 for disassembling and assembling the conical platform A72. The axial position of the conical platform A72 can be adjusted at the same time to adjust the expansion amplitude of the extrusion body 71 squeezed by the conical platform A72 when the first shell 1 and the second shell 2 are connected, thereby changing the clamping strength of the first terminal piece 4 and the second terminal piece 5.

[0044] Embodiment 3

[0045] like Figure 4 As shown, the extrusion assembly includes an axially aligned conical platform B81 and a third rotating seat 82, the conical platform B81 is fixed to the inner end surface of the first shell 1, the small diameter end of the conical platform B81 points to the second shell 2, the third rotating seat 82 is fixed to the inner end surface of the second shell 2, and a plurality of arc-shaped pressure rods 8 are distributed in an annular shape around the third rotating seat 82, and the arc-shaped pressure rods 8 are elastically rotatably connected to the third rotating seat 82 through a torsion spring;

[0046] All arc-shaped pressure rods 8 have a tendency to retract. When the first shell 1 and the second shell 2 are axially pressed and connected, the small-diameter end of the conical platform B81 is inserted between the arc-shaped pressure rods 8. The conical surface of the conical platform B81 resists the rotation and expansion of the arc-shaped pressure rods 8 from the middle to the surrounding areas, so that the arc-shaped pressure rods 8 radially squeeze the fitting parts of the first terminal piece 4 and the second terminal piece 5.

[0047] Embodiment 4

[0048] like Figure 5 As shown, the extrusion component uses a flexible sphere 9, which is made of insulating rubber or elastic plastic. The diameter of the flexible sphere 9 is slightly larger than the annular distribution diameter of the first terminal piece 4. Before the circuit is connected, the flexible sphere 9 is placed in the first shell 1 through the port, and the first shell 1 and the second shell 2 are axially pressed and connected. The distance between the inner end face of the first shell 1 and the inner end face of the second shell 2 is the same as the diameter of the flexible sphere 9. The flexible sphere 9 is positioned by end face extrusion, and the flexible sphere 9 radially squeezes the fitting parts of each first terminal piece 4 and the second terminal piece 5.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined photovoltaic connector, comprising a first housing (1) and a second housing (2), characterized in that: A plurality of first terminal pieces (4) are distributed in an annular manner on the inner wall of the first shell (1), and a plurality of second terminal pieces (5) are distributed in an annular manner on the end surface of the second shell (2); the first shell (1) and the second shell (2) are inserted into each other so that the first terminal pieces (4) and the second terminal pieces (5) are in close contact with each other, and the contacting surfaces of the first terminal pieces (4) and the second terminal pieces (5) are parallel to the tangent line of the first shell (1); a sleeve (3) is provided on the outer side of the second shell (2), and the sleeve (3) is threadedly connected to the outer wall of the first shell (1) for axially pressing the first shell (1) and the second shell (2); A pressing assembly is arranged in a chamber formed by the first shell (1) and the second shell (2) being inserted into each other, and the pressing assembly applies radial pressing force to the fitting part of each first terminal piece (4) and second terminal piece (5).

2. The combined photovoltaic connector according to claim 1, characterized in that: The inner wall of the first shell (1) is provided with a plurality of embedding grooves (11) in an annular manner, the embedding grooves (11) extending axially to the port position of the first shell (1), the first terminal piece (4) is arranged in the embedding grooves (11), the end surface of the second shell (2) is provided with a plurality of insertion handles (21) in an annular manner, the second terminal piece (5) penetrates the insertion handles (21), and the insertion handles (21) are aligned and plugged into the embedding grooves (11) one by one so that the first terminal piece (4) and the second terminal piece (5) are aligned.

3. The combined photovoltaic connector according to claim 1, characterized in that: The extrusion assembly comprises a first rotating seat (62) connected to the inner end surface of the first shell (1) and a contact handle (61) arranged at the port position of the first shell (1); a plurality of hinged rods (6) are distributed in an annular manner between the first rotating seat (62) and the contact handle (61); the hinged rod (6) has two rotating arms that are rotatably connected; the two ends of the hinged rod (6) are rotatably connected to the first rotating seat (62) and the contact plate (63); the rotating portion of the hinged rod (6) is arched outward and connected to the contact handle (61); the contact handle (61) radially presses the fitting portion of the first terminal sheet (4) and the second terminal sheet (5).

4. The combined photovoltaic connector according to claim 3, characterized in that: The first rotating seat (62) is threadedly connected to the inner end surface of the first shell (1).

5. The combined photovoltaic connector according to claim 1, characterized in that: The extrusion assembly comprises a second rotating seat (74) arranged on the inner end surface of the first shell (1) and a conical platform A (72) arranged on the inner end surface of the second shell (2), a plurality of swing rods (7) are distributed in an annular manner around the second rotating seat (74), the swing rod (7) is elastically rotatably connected to the second rotating seat (74) via a torsion spring, an extrusion body (71) is provided at the end of the swing rod (7), and a conical surface of the conical platform A (72) stretches the extrusion body (71) from the middle to the surroundings, so that the extrusion body (71) radially squeezes the fitting portion of the first terminal piece (4) and the second terminal piece (5).

6. The combined photovoltaic connector according to claim 5, characterized in that: An axially extending stud (73) is fixed to the inner end surface of the second shell (2), and the conical platform A (72) is threadedly connected to the stud (73).

7. The combined photovoltaic connector according to claim 1, characterized in that: The extrusion assembly comprises a conical platform B (81) arranged on the inner end surface of the first shell (1) and a third rotating seat (82) arranged on the inner end surface of the second shell (2), a plurality of arc-shaped pressure rods (8) are distributed in an annular manner around the third rotating seat (82), the arc-shaped pressure rods (8) are elastically rotatably connected to the third rotating seat (82) via a torsion spring, and the conical surface of the conical platform B (81) contacts the arc-shaped pressure rod (8) from the middle to the surrounding areas, so that the arc-shaped pressure rod (8) rotates and expands, and radially presses the fitting part of the first terminal piece (4) and the second terminal piece (5).

8. The combined photovoltaic connector according to claim 1, characterized in that: The extrusion assembly comprises a flexible sphere (9), which is arranged in a chamber formed by the first shell (1) and the second shell (2) being inserted into each other, and the flexible sphere (9) radially squeezes the fitting parts of each first terminal piece (4) and the second terminal piece (5), and the distance between the inner end surface of the first shell (1) and the inner end surface of the second shell (2) is the same as the diameter of the flexible sphere (9).

9. The combined photovoltaic connector according to claim 1, characterized in that: The first terminal piece (4) is bent to form a U-shaped gap, and the second terminal piece (5) is inserted into the U-shaped gap so that the inner and outer sides of the second terminal piece (5) are in close contact with the first terminal piece (4), and the end of the first terminal piece (4) is folded outward to form a first bent portion (41).

10. The combined photovoltaic connector according to claim 9, characterized in that: The end of the second terminal piece (5) is bent 180° to form a thickness twice that of the pasted piece, and the end of the second terminal piece (5) is further folded into the pasted gap to form a second bent portion (51). The second bent portion (51) supports the pasted gap of the second terminal piece (5), so that the thickness of the end of the second terminal piece (5) has a compressible space.

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