A plug-in copper-aluminum photovoltaic connector

Abstract

The present invention relates to the technical field of wire connection devices, and specifically to a plug-in copper-aluminum photovoltaic connector, including a female head and a male head, wherein the female head includes an end cover and a top column, the top column is coaxially arranged on the inner side of the end cover and has a threading hole at its center, and the male head includes an insulating ring block, a conductive end column, a conductive ring and an outer shell, and the insulating ring block is provided with a plurality of wire insertion holes at equal intervals in the circumferential direction, one end of the wire insertion hole is located on its end surface, and the other end of the wire insertion hole is located on its circumferential surface, and a through hole is provided in the circumferential direction of the conductive end column. The present invention is provided with an insulating ring block, a conductive end column, a conductive ring and an outer shell, and after the cable is inserted into the insulating ring block, the insulating ring block is driven to rotate relative to the conductive ring by the conductive end column, so that the conductive ring can gradually disperse the copper wire after being divided into strands to the conductive end column, thereby avoiding heat accumulation, not only improving the conductive uniformity of the electrical connection part, but also avoiding damage to the connector.

Description

Technical Field

[0001] The invention relates to the technical field of conductive connection devices, and in particular to a plug-in type copper-aluminum photovoltaic connector. Background Art

[0002] A photovoltaic connector is a connector that connects photovoltaic terminals and cables. A photovoltaic connector is usually equipped with a male head and a female head. After the male head and the female head are plugged in, they can form a good electrical conduction. Please refer to Fig.10 As shown, the connection form in which the plug and the socket cooperate with each other in the figure is one of the male and female connection modes.

[0003] The connection between the photovoltaic terminal and the cable of the existing photovoltaic connector is often connected by crimping, and the metal wire of the cable is directly crimped onto the conductor to complete the connection between the photovoltaic terminal and the cable. However, it still has the following defects: the crimping method used at the connection between the photovoltaic terminal and the cable easily leads to heat accumulation during use, and the heat dissipation effect is poor. Summary of the invention

[0004] Based on this, it is necessary to provide a plug-in copper-aluminum photovoltaic connector to address the technical problem of poor heat dissipation effect of current photovoltaic connectors.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A pluggable copper-aluminum photovoltaic connector comprises:

[0007] The female connector includes an end cap and a top column, wherein the top column is coaxially arranged on the inner side of the end cap and has a threading hole at its center;

[0008] The male connector includes an insulating ring block, a conductive terminal post, a conductive ring and a shell. The insulating ring block is provided with a plurality of wire insertion holes at equal intervals in the circumferential direction. One end of the wire insertion hole is located on its end surface, and the other end of the wire insertion hole is located on its circumferential surface. The conductive terminal post is provided with through holes in the circumferential direction, and the through holes correspond to the wire insertion holes one by one.

[0009] The insulating ring block is connected to one side of the conductive terminal column, the housing and the conductive terminal column are coaxial and elastically connected, an annular chamber is formed between the inner circumferential wall of the housing and the outer circumference of the conductive terminal column, the conductive ring is located in the annular chamber and can move along the axial direction of the annular chamber;

[0010] A first preset distance is arranged between the inner peripheral wall of the conductive ring and the outer peripheral wall of the conductive terminal post.

[0011] Furthermore, a second preset distance is provided between the inner peripheral wall of the conductive ring and the outer peripheral wall of the conductive terminal post, and the second preset distance is smaller than the first preset distance.

[0012] Furthermore, the second preset distance is a variable distance, and the second preset distance gradually decreases from an end close to the female head to an end far from the female head.

[0013] Furthermore, a transmission assembly is provided between the conductive ring and the conductive end post, and the transmission assembly is used to drive the conductive ring to rotate relative to the conductive end post when the conductive ring moves relative to the conductive end post.

[0014] Furthermore, the transmission assembly includes a guide protrusion and a spiral guide groove, the spiral guide groove is formed on the conductive end column, the guide protrusion is arranged on the conductive ring, and the guide protrusion is slidably connected in the spiral guide groove.

[0015] Furthermore, the shell is provided with an exhaust hole, which is connected to the annular chamber;

[0016] An annular mounting groove is also provided on the shell, which is connected to the other end of the exhaust hole. An exhaust fan is provided in the annular mounting groove for extracting air in the exhaust hole through the rotation of the exhaust fan.

[0017] Furthermore, the female head and the male head are threadedly connected.

[0018] Furthermore, anti-slip protrusions are arranged on the circumference of the female head and the male head.

[0019] Furthermore, a conical extrusion column is provided at one end of the insulating ring block away from the conductive terminal column.

[0020] Furthermore, a plurality of partition strips are arranged at equal intervals on the circumference of the conical extrusion column.

[0021] The beneficial effects of the present invention are:

[0022] The present invention is provided with an insulating ring block, a conductive terminal post, a conductive ring and an outer shell. After the cable passes through the insulating ring block, it is divided into multiple copper wires. The insulating ring block is driven to rotate relative to the conductive ring by the conductive terminal post, so that the conductive ring can gradually disperse the divided copper wires to the conductive terminal post. Since the contact positions of the copper wires and the conductive terminal post are evenly distributed circumferentially, heat accumulation can be avoided, which not only improves the conductivity uniformity of the electrical connection part, but also avoids damage to the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is an overall schematic diagram of a plug-in copper-aluminum photovoltaic connector of the present invention;

[0024] Figure 2 This is an exploded view of a plug-in copper-aluminum photovoltaic connector of the present invention;

[0025] Figure 3 A cross-sectional view of a plug-in copper-aluminum photovoltaic connector of the present invention;

[0026] Figure 4 for Figure 3 A schematic diagram of the enlarged structure in the middle;

[0027] Figure 5 for Figure 4 Schematic diagram of the enlarged structure at B in the middle;

[0028] Figure 6 This is a schematic structural diagram of a housing in a plug-in copper-aluminum photovoltaic connector of the present invention;

[0029] Figure 7 It is a schematic structural diagram of a conductive terminal post in a plug-in copper-aluminum photovoltaic connector of the present invention;

[0030] Figure 8 This is a schematic structural diagram of an insulating ring block in a pluggable copper-aluminum photovoltaic connector of the present invention;

[0031] Fig. 9 This is a schematic structural diagram of a conductive ring in a plug-in copper-aluminum photovoltaic connector of the present invention;

[0032] Fig.10 A schematic diagram of an existing connector structure.

[0033] in:

[0034] 100, female connector; 110, end cap; 120, top column; 130, threading hole; 200, male connector; 210, insulating ring block; 211, plug hole; 220, conductive end column; 221, through hole; 222, straight guide groove; 230, conductive ring; 231, semicircular ring; 232, limiting protrusion; 240, housing; 241, exhaust hole; 242, annular mounting groove; 250, compression spring; 260, annular chamber; 271, first preset distance; 272, second preset distance; 300, transmission assembly; 310, guide protrusion; 320, spiral guide groove; 400, exhaust fan; 500, anti-slip protrusion; 600, conical extrusion column; 610, partition bar; 710, insert; 720, socket; 810, copper part; 820, copper-aluminum joint; 830, aluminum part. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0037] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] like Fig.10 As shown, the existing connector mainly adopts the method of connecting the plug 710 and the socket 720 to each other. When in use, the copper wire is crimped between the plug 710 and the socket 720, so that the connection between the photovoltaic terminal and the cable can be completed. However, this will cause heat accumulation and is not conducive to heat dissipation.

[0039] like Figures 1 to 9As shown, a plug-in copper-aluminum photovoltaic connector includes a female head 100 and a male head 200, the female head 100 includes an end cover 110 and a top column 120, the top column 120 is coaxially arranged on the inner side of the end cover 110 and a threading hole 130 is opened at the center thereof, the male head 200 includes an insulating ring block 210, a conductive end column 220, a conductive ring 230 and a shell 240, a plurality of wire insertion holes 211 are opened at equal intervals in the circumferential direction of the insulating ring block 210, one end of the wire insertion hole 211 is located on its end surface, and the other end of the wire insertion hole 211 is located on its circumferential surface, a through hole 221 is opened in the circumferential direction of the conductive end column 220, and the through hole 221 corresponds to the wire insertion hole 211 one by one, the insulating ring block 210 is connected to one side of the conductive end column 220, and the shell 240 and the conductive end column 220 are coaxial and elastically connected. Specifically, the conductive end column 220 and the shell 240 They are elastically connected by a compression spring 250, one end of the compression spring 250 is connected to the shell 240, and the other end of the compression spring 250 is connected to the conductive terminal column 220, the inner circumferential wall of the shell 240 is larger than the outer circumferential wall of the conductive terminal column 220, thereby forming an annular chamber 260 between the inner circumferential wall of the shell 240 and the outer circumferential wall of the conductive terminal column 220, the conductive ring 230 is located in the annular chamber 260 and the conductive ring 230 can move along the axial direction of the annular chamber 260, and a first preset distance 271 is provided between the inner circumferential wall of the conductive ring 230 and the outer circumferential wall of the conductive terminal column 220, specifically, the inner circumferential wall of the conductive ring 230 is larger than the outer circumferential wall of the conductive terminal column 220, thereby forming a first preset distance 271 between the inner circumferential wall of the conductive ring 230 and the outer circumferential wall of the conductive terminal column 220, and the female head 100 and the male head 200 are threadedly connected.

[0040] When in use, the staff first peels off a small section of the insulation of the cable, at which time the copper wire inside the cable is exposed, then passes the copper wire through the threading hole 130, and then divides the copper wire into multiple strands, and then makes the multiple strands of copper wire pass through the plug hole 211 and the corresponding through hole 221 respectively, and makes a part of the copper wire inserted into the area where the annular chamber 260 is located, and then pushes the insulating ring block 210 and the conductive terminal 220 to the right, specifically through the threaded connection of the female head 100 and the male head 200, so that the female head 100 and the male head 200 are gradually connected. The conductive end post 220 and the conductive ring 230 are close to each other. At this time, the conductive end post 220 moves to the right relative to the conductive ring 230. Under the squeezing action of the conductive ring 230, the copper wire is dispersed to be evenly distributed on the outer circumference of the conductive end post 220 and the inner circumference of the conductive ring 230. Compared with directly crimping the copper wire on the conductive end post 220 and the conductive ring 230, the present invention disperses the copper wire to be evenly distributed on the circumference of the conductive end post 220 through the relative movement of the conductive end post 220 and the conductive ring 230, thereby avoiding heat accumulation and improving the conductivity uniformity of the electrical connection part.

[0041] It should also be added that Figure 2As shown, a plurality of semicircular rings 231 are provided on the end surface of the conductive ring 230 that contacts the copper wire; when the copper wire moves to the inside of the semicircular rings 231, as the conductive terminal post 220 continues to move to the right, the semicircular rings 231 gradually push the copper wire away, so that the copper wire can be evenly distributed on the conductive terminal post 220.

[0042] In one embodiment, if Figure 5 As shown, a second preset distance 272 is further provided between the inner peripheral wall of the conductive ring 230 and the outer peripheral wall of the conductive terminal post 220 , and the second preset distance 272 is smaller than the first preset distance 271 .

[0043] During the long-term operation of the photovoltaic connector, the copper wire is always in a high-temperature state, so the copper wire will produce plastic deformation, causing the copper wire crimped between the conductive ring 230 and the conductive terminal post 220 to loosen, resulting in poor contact. In order to allow the copper wire to continue to be crimped between the conductive ring 230 and the conductive terminal post 220, it is necessary to reduce the distance between the conductive ring 230 and the conductive terminal post 220. At this time, by allowing the conductive terminal post 220 to continue to move to the right relative to the conductive ring 230, the copper wire is located at the second preset distance 272. At this time, the copper wire continues to be crimped between the conductive terminal post 220 and the conductive ring 230 to maintain the stability of the connection.

[0044] In one embodiment, if Figure 2 As shown, a conical extrusion column 600 is provided at one end of the insulating ring block 210 away from the conductive terminal column 220; when the staff pulls the cable through the wire insertion hole 211, the insulation skin of the cable can be broken, and the conical extrusion column 600 penetrates into the cable, so that the insulation skin of the cable can be better stripped off.

[0045] In one embodiment, if Figure 2 As shown, a plurality of partition bars 610 are arranged at equal intervals on the circumference of the conical extrusion column 600. The partition bars 610 are used to guide the copper wires after being divided, so that each copper wire can pass through the corresponding wire insertion hole 211, and at the same time, it can also prevent two adjacent copper wires from being entangled with each other.

[0046] In one embodiment, if Figure 5 As shown, the second preset distance 272 is a variable distance, and the second preset distance 272 gradually decreases from an end close to the female head 100 to an end away from the female head 100 .

[0047] Since the second preset spacing 272 is a variable spacing, when the connector has poor contact, the staff moves the conductive terminal 220, and the copper wire gradually moves to the second preset spacing 272. Therefore, after the copper wire moves to the position of the second preset spacing 272, by tightening the female head 100, the copper wire can be further crimped between the conductive terminal 220 and the conductive ring 230, thereby further maintaining the stability of the connection.

[0048] In one embodiment, if Figure 4 As shown, a transmission assembly 300 is arranged between the conductive ring 230 and the conductive end column 220. The transmission assembly 300 is used to drive the conductive ring 230 to rotate relative to the conductive end column 220 when the conductive ring 230 moves relative to the conductive end column 220. The transmission assembly 300 includes a guide protrusion 310 and a spiral guide groove 320. The spiral guide groove 320 is opened on the conductive end column 220, and the guide protrusion 310 is arranged on the conductive ring 230. The guide protrusion 310 is slidably connected in the spiral guide groove 320.

[0049] It should also be noted that a plurality of limiting protrusions 232 are circumferentially and evenly spaced on the right end face of the conductive ring 230, and a plurality of limiting grooves are provided at corresponding positions on the outer shell 240, so that the rotation of the conductive ring 230 is limited by the mutual cooperation between the limiting protrusions 232 and the limiting grooves, so that the conductive ring 230 and the outer shell 240 remain relatively still.

[0050] When the conductive terminal post 220 moves to the right relative to the conductive ring 230, the conductive terminal post 220 moves to the right and rotates through the transmission action of the guide protrusion 310 and the spiral guide groove 320, so that the contact position between the copper wire and the conductive terminal post 220 and the conductive ring 230 can be changed, so that the conduction effect of the copper wire is better.

[0051] It should also be added that Figure 2 As shown, a straight guide groove 222 is also opened in the circumferential direction of the conductive end column 220, and the straight guide groove 222 is slidably connected to the guide protrusion 310, so that the conductive end column 220 can move relative to the conductive ring 230, and the straight guide groove 222 is also connected to the spiral guide groove 320, so that the guide protrusion 310 can slide from the straight guide groove 222 into the spiral guide groove 320.

[0052] In one embodiment, if Figure 4 As shown, an exhaust hole 241 is opened on the outer shell 240, and the exhaust hole 241 is connected with the annular chamber 260. An annular mounting groove 242 is also provided on the outer shell 240, and the annular mounting groove 242 is connected with the other end of the exhaust hole 241. An exhaust fan 400 is arranged in the annular mounting groove 242, which is used to extract the air in the exhaust hole 241 through the rotation of the exhaust fan 400.

[0053] Because the copper wire generates a lot of heat during the conduction process, in order to ensure that the copper wire has a good conduction effect for a long time, the heat generated by the copper wire needs to be discharged in time. During the use of the photovoltaic connector, the heat generated by the copper wire is transferred to the conductive ring 230, and the heat of the conductive ring 230 is transferred to the location of the annular mounting groove 242 through the exhaust hole 241. At this time, the exhaust fan 400 is started, and the heat generated is discharged in time through the rotation of the exhaust fan 400 to avoid the continuous increase in the surface temperature of the copper wire and the copper wire from melting.

[0054] In one embodiment, if Figure 2 As shown, the conductive terminal 220 is composed of three parts, namely a copper part 810, a copper-aluminum joint part 820 and an aluminum part 830. The part directly in contact with the copper wire is the copper part 810, the part adjacent to the copper part 810 is the copper-aluminum joint part 820, and the end of the copper-aluminum joint part 820 away from the copper part 810 is the aluminum part 830. This is to avoid different conductivity caused by different metal materials.

[0055] In one embodiment, if Figure 1 As shown, the outside of the female head 100 and the male head 200 are both provided with anti-slip protrusions 500, so as to facilitate the rotation of the female head 100 and the male head 200, so that the female head 100 and the male head 200 can be closer to each other or farther away from each other.

[0056] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A plug-in copper-aluminum photovoltaic connector, characterized in that: include: The female connector includes an end cap and a top column, wherein the top column is coaxially arranged on the inner side of the end cap and has a threading hole at its center; The male connector includes an insulating ring block, a conductive terminal post, a conductive ring and a shell. The insulating ring block is provided with a plurality of wire insertion holes at equal intervals in the circumferential direction. One end of the wire insertion hole is located on its end surface, and the other end of the wire insertion hole is located on its circumferential surface. The conductive terminal post is provided with through holes in the circumferential direction, and the through holes correspond to the wire insertion holes one by one. The insulating ring block is connected to one side of the conductive terminal column, the housing and the conductive terminal column are coaxial and elastically connected, an annular chamber is formed between the inner circumferential wall of the housing and the outer circumference of the conductive terminal column, the conductive ring is located in the annular chamber and can move along the axial direction of the annular chamber; A first preset distance is provided between the inner circumferential wall of the conductive ring and the outer circumferential wall of the conductive end column; a second preset distance is also provided between the inner circumferential wall of the conductive ring and the outer circumferential wall of the conductive end column, and the second preset distance is smaller than the first preset distance; the second preset distance is a variable distance, and the second preset distance gradually decreases from the end close to the female head to the end away from the female head; a transmission assembly is provided between the conductive ring and the conductive end column, and the transmission assembly is used to drive the conductive ring to rotate relative to the conductive end column when the conductive ring moves relative to the conductive end column; the transmission assembly includes a guide protrusion and a spiral guide groove, the spiral guide groove is provided on the conductive end column, the guide protrusion is provided on the conductive ring, and the guide protrusion is slidably connected in the spiral guide groove.

2. A plug-in copper-aluminum photovoltaic connector according to claim 1, characterized in that: The shell is provided with an exhaust hole, which is connected to the annular chamber; An annular mounting groove is also provided on the shell, which is connected to the other end of the exhaust hole. An exhaust fan is provided in the annular mounting groove for extracting air in the exhaust hole through the rotation of the exhaust fan.

3. A plug-in copper-aluminum photovoltaic connector according to claim 2, characterized in that: The female head and the male head are threadedly connected.

4. A plug-in copper-aluminum photovoltaic connector according to claim 3, characterized in that: Anti-slip protrusions are arranged on the circumference of the female head and the male head.

5. A plug-in copper-aluminum photovoltaic connector according to claim 4, characterized in that: A conical extrusion column is arranged at one end of the insulating ring block away from the conductive terminal column.

6. A plug-in copper-aluminum photovoltaic connector according to claim 5, characterized in that: A plurality of partition bars are arranged at equal intervals on the circumference of the conical extrusion column.

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