Connector and photovoltaic junction box

Abstract

The utility model relates to a connector and a photovoltaic junction box. The connector comprises a male connector, a female connector, a first wire inserted into the male connector, a second wire inserted into the female connector, a single-rotation ratchet ring, a sealing ring and a single-rotation connecting sleeve arranged on the outer side of the single-rotation ratchet ring. The single-rotation ratchet ring comprises a clamping jaw; the sealing ring comprises a fixed seat and a limiting part arranged on the fixed seat, and the outer surface of the limiting part is fixedly connected with the inner surface of the single-rotation ratchet ring, so that the single-rotation ratchet ring is connected with the fixed seat; the male connector comprises a male shell, and one end, close to the first wire, of the male shell is a first one-way screwing end. And the female head connector in butt joint fixation with the male head connector comprises a female shell, one end, close to the second wire, of the female shell is a second one-way screwing end, and when the single-rotation connecting sleeve is screwed to the first one-way screwing end or the second one-way screwing end, the clamping jaw of the single-rotation ratchet ring shrinks and is clamped into the single-rotation connecting sleeve, so that the single-rotation connecting sleeve is fixedly connected with the fixed seat. According to the scheme, the safety of the connector is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, in particular to a connector and a photovoltaic junction box. Background Art

[0002] As an important component in solar photovoltaic power generation systems, photovoltaic connectors have high safety performance requirements in actual applications.

[0003] The photovoltaic connector includes a male connector and a female connector. After the male connector and the female connector are plugged in, the ratchet mechanism at both ends is used to tighten them. After the two ends are tightened, the wire is fixed by retracting the clamping claws. However, the above clamping method by the clamping claws will cause damage to the outer skin of the wire. Utility Model Content

[0004] Based on this, it is necessary to provide a connector and a photovoltaic junction box that can improve safety in response to the above technical problems.

[0005] On the one hand, the utility model provides a connector, including: a male connector, a female connector, a first wire inserted into the male connector, a second wire inserted into the female connector, two single-rotation ratchet rings, two sealing rings respectively sleeved on the first wire and the second wire, and two single-rotation connection sleeves, each single-rotation connection sleeve is arranged on the outer side of the corresponding single-rotation ratchet ring; wherein,

[0006] The single-rotation ratchet wheel comprises:

[0007] Gripper;

[0008] The sealing ring comprises:

[0009] A fixing seat and a limiting portion arranged on the fixing seat, wherein the outer surface of the limiting portion is fixedly connected to the inner surface of the single-rotation ratchet ring, so that the single-rotation ratchet ring is connected to the fixing seat;

[0010] The male connector comprises:

[0011] A male housing, wherein one end of the male housing close to the first wire is a first one-way tightening end, and when the one-way connecting sleeve is rotated and tightened to the first one-way tightening end, the clamping claw of the one-way ratchet ring is contracted and clamped into the inside of the one-way connecting sleeve, so that the one-way connecting sleeve is fixedly connected to the fixing seat;

[0012] The female connector is butt-jointed and fixed with the male connector, and the female connector comprises:

[0013] A female shell, wherein one end of the female shell close to the second wire is a second one-way tightening end. When the one-way connecting sleeve is rotated and tightened to the second one-way tightening end, the clamping claw of the one-way ratchet ring shrinks and clamps into the inside of the one-way connecting sleeve, so that the one-way connecting sleeve is fixedly connected to the fixing seat.

[0014] In some embodiments, the jaw includes a plurality of ratchet teeth;

[0015] The sealing ring includes a plurality of protrusions, which are annularly and equidistantly arranged on the outer surface of the limiting portion. When the one-way connecting sleeve is rotated and tightened to the first one-way tightening end and / or the second one-way tightening end, each protrusion is stuck between the corresponding two ratchet teeth.

[0016] In some embodiments, the mother shell comprises:

[0017] A first plug-in terminal, the first plug-in terminal being arranged at an end away from the second wire;

[0018] A plug hole, the plug hole is arranged at the center of the first plug end;

[0019] A card slot, the card slot is arranged on the outer side of the first plug end;

[0020] The public shell comprises:

[0021] A second plug-in terminal, the second plug-in terminal being arranged at an end away from the first wire;

[0022] A plug-in center column, the plug-in center column is arranged at the center of the second plug-in end, and the plug-in center column is matched and plugged with the plug-in hole;

[0023] A locking tooth is arranged on the outer side of the second plug-in end, and the locking tooth is matched and locked with the locking groove.

[0024] In some embodiments, the locking tooth includes: a connecting groove arranged in the middle of the locking tooth, and the locking groove includes: a hollow locking cavity arranged at the inner end of the locking groove, wherein the length of the connecting groove is the same as the length of the locking groove, and the center position of the locking tooth is aligned with the center position of the locking groove.

[0025] In one embodiment, the end of the engaging tooth includes a boss, and after the engaging tooth is inserted into the engaging groove, the boss is engaged in the engaging groove.

[0026] In some embodiments, the connector includes two single-rotation connection sleeves; wherein,

[0027] Each single-rotation connection sleeve comprises: a one-way slot, which is arranged on the inner side of the single-rotation connection sleeve;

[0028] The first one-way tightening end comprises: a second one-way tooth plate, the second one-way tooth plate is used to be connected to a one-way clamping groove in one of the two one-way connecting sleeves by one-way clamping;

[0029] The second one-way tightening end includes: a first one-way tooth plate, and the first one-way tooth plate is used for being connected to a one-way clamping groove in another one of the two one-way rotating connecting sleeves in a one-way manner.

[0030] In some embodiments, the single-rotation connecting sleeve includes a ratchet, which is arranged on the inner side of the single-rotation connecting sleeve. When the single-rotation connecting sleeve is rotated and tightened to the first one-way tightening end, the ratchet is connected to the end of the first one-way tooth plate. When the single-rotation connecting sleeve is rotated and tightened to the second one-way tightening end, the ratchet is connected to the end of the second one-way tooth plate.

[0031] In some embodiments, the first one-way tooth plate is axially symmetrically arranged on the outer surface of the first one-way tightening end, and protrudes laterally and horizontally from the surface of the first one-way tightening end; the second one-way tooth plate is axially symmetrically arranged on the outer surface of the second one-way tightening end, and protrudes laterally and horizontally from the surface of the second one-way tightening end.

[0032] In some embodiments, the outer surfaces of the male shell and the female shell are provided with circumferential reinforcing ribs.

[0033] On the other hand, the utility model also provides a photovoltaic junction box, comprising the connector as described above.

[0034] The connector and photovoltaic junction box provided by the utility model can lock the clamping claws by rotating the single-rotation ratchet ring, and at the same time, the single-rotation ratchet ring is fixedly connected to the fixing seat on the sealing ring through the limiting part on the sealing ring, so that the fixing seat can withstand stress, protect the outer skin of the first wire and the second wire from being clamped, and improve the safety of the first wire and the second wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of an exploded structure of a connector provided in one embodiment of the utility model;

[0036] Figure 2 A schematic diagram of a partial structure of a connector provided in one embodiment of the utility model;

[0037] Figure 3 Another partial structural schematic diagram of a connector is provided for one embodiment of the utility model;

[0038] Figure 4 Another partial structural schematic diagram of a connector is provided for one embodiment of the utility model;

[0039] Figure 5 Another structural schematic diagram of a connector is provided for one embodiment of the utility model. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0041] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] The present application embodiment provides a photovoltaic junction box. The photovoltaic junction box includes a connector. Figure 1 , Figure 1 The exploded structural diagram of a connector provided in an embodiment of the present application. The connector 1 comprises a male connector 11, a female connector 12, a first wire 13 inserted in the male connector 11, a second wire 14 inserted in the female connector 12, two single-rotation ratchet rings 15, two sealing rings 16 respectively sleeved on the first wire 13 and the second wire 14, and two single-rotation connection sleeves 17. Each single-rotation connection sleeve 17 is arranged on the outer side of the corresponding single-rotation ratchet ring 15.

[0044] The single-rotation ratchet rim 15 includes a clamping claw 151. The sealing ring 16 includes a fixing seat 161 and a limiting portion 162 disposed on the fixing seat 161. The outer surface of the limiting portion 162 is fixedly connected to the inner surface of the single-rotation ratchet rim 15, so that the single-rotation ratchet rim 15 is connected to the fixing seat 161. In one embodiment, the limiting portions 162 are evenly distributed on the outer surface of the fixing seat 161.

[0045] The male connector 11 includes a male housing 111. The end of the male housing 111 away from the first wire 13 is a second plug end 1111, and the end close to the first wire 13 is a first one-way tightening end 1112. When the one-way connection sleeve 17 is rotated and tightened to the first one-way tightening end 1112, the clamping claw 151 of the one-way ratchet ring 15 shrinks and clamps into the inside of the one-way connection sleeve 17, so that the one-way connection sleeve 17 is fixedly connected to the fixing seat 161.

[0046] The female connector 12 and the male connector 11 are fixedly connected, and the female connector 12 includes a female shell 121. The end of the female shell 121 away from the second wire 14 is a first plug end 1211, and the end close to the second wire 14 is a second one-way tightening end 1212. When the one-way connection sleeve 17 is rotated and tightened to the second one-way tightening end 1212, the clamping claw 151 of the one-way ratchet ring 15 is contracted and clamped into the inside of the one-way connection sleeve 17, so that the one-way connection sleeve 17 is fixedly connected to the fixing seat 161.

[0047] In one embodiment, if Figure 1 As shown, the female connector 12 further includes a pin 122, and the male connector 11 further includes a socket 112. The second one-way tightening end 1212 has the same shape as the first one-way tightening end 1112. The female connector 12 is connected to the socket 112 of the male connector 11 by plugging and docking, and can be adapted to connectors of different diameters, thereby improving overall adaptability.

[0048] When assembling the connector 1, the inner side of the single-rotation ratchet ring 15 can be connected to the fixing seat 161 through the limiting portion 162. In the process of tightening and fixing the single-rotation connecting sleeve 17, the clamping jaws 151 and the limiting portion 162 will not be relatively displaced, so that the single-rotation connecting sleeve 17 can be tightened and the pressure damage to the first wire 13 and the second wire 14 can be reduced.

[0049] When assembling the connector 1, the fixing seat 161 of one sealing ring 16 is arranged outside the end of the first wire 13 and inside the corresponding single-rotation ratchet ring 15, and the fixing seat 161 of the other sealing ring 16 is arranged outside the end of the second wire 14 and inside the corresponding single-rotation ratchet ring 15. Through the fixed single-rotation ratchet ring 15, while locking the clamping jaw 151, the fixing seat 161 is fixed to the outside of the first wire 13 and the second wire 14, so that the fixing seat 161 fixedly connected to the single-rotation ratchet ring 15 is subjected to stress, which can protect the first wire 13 and the second wire 14. Furthermore, even if a larger locking torque is applied, since the fixing seat 161 will not rotate and the clamping jaw 151 will not contact the first wire 13 and the second wire 14, there is no fear of pinching the outer skin of the first wire 13 and the second wire 14.

[0050] In one embodiment, if Figure 1As shown, the clamping jaw 151 includes a plurality of ratchet teeth 1511. The sealing ring 16 includes a plurality of protrusions 163, which are arranged in an annular manner and equidistantly on the outer surface of the limiting portion 162. When the single-rotation connecting sleeve 17 is rotated and tightened to the first one-way tightening end 1112 and / or the second one-way tightening end 1212, each protrusion 163 is stuck between two corresponding ratchet teeth 1511.

[0051] In one embodiment, the spacing between the protrusions 163 is the same as the tooth spacing of the single-rotation ratchet rim 15 , and the limiting portion 162 is fixedly connected to the inner surface of the single-rotation ratchet rim 15 via the protrusions 163 .

[0052] Specifically, when the single-rotation connection sleeve 17 is tightened to the first one-way tightening end 1112 and / or the second one-way tightening end 1212, when the clamping claw 151 is locked, the protrusion 163 is just stuck between the corresponding ratchet teeth 1511, so that the ratchet can be fixed and the ratchet guide can be installed, and the fixed force is released on the fixing seat 161, so as to protect the first wire 13. In this way, the male shell 111 is improved to a one-way locked and non-detachable shell, so that the base point of its assembly acts on the fixing seat 161, which can improve the overall firmness of the connector 1. Furthermore, the one-way hook and the single-rotation connection sleeve 17 are used to ensure that the male shell 111 is completely locked to prevent the artificial or accidental loosening of the clamping shell.

[0053] In one embodiment, if Figure 1 and 2 As shown, the mother shell 121 includes: a first plug-in end 1211, which is arranged at an end away from the second wire 14; a plug-in hole 1213, which is arranged at the center of the first plug-in end 1211; and a snap-in groove 1214, which is arranged on the outside of the first plug-in end 1211.

[0054] The male shell 111 includes: a second plug-in end 1111, which is arranged at an end away from the first wire 13; a plug-in middle column 1113, which is arranged at the center of the second plug-in end 1111, and the plug-in middle column 1113 is matched and plugged with the plug-in hole 1213; and a snap-in tooth 1114, which is arranged on the outer side of the second plug-in end 1111, and the snap-in tooth 1114 is matched and plugged with the snap-in groove 1214. Through the form of plug-in, the male shell 111 and the female shell 121 can be connected quickly and conveniently, and can also adapt to a variety of connectors with different diameters to improve overall adaptability.

[0055] In one embodiment, if Figure 2As shown, the engaging tooth 1114 includes: a connecting groove 11141 disposed in the middle of the engaging tooth 1114, and the engaging groove 1214 includes: a hollow locking cavity disposed at the inner end of the engaging groove 1214, wherein the length of the connecting groove 11141 is the same as the length of the engaging groove 1214, and the center position of the engaging tooth 1114 is aligned with the center position of the engaging groove 1214. Through the connection of the sizes of the engaging tooth 1114 and the engaging groove 1214, the engaging tooth 1114 can be locked and engaged in a one-way manner by the locking cavity in the engaging groove 1214 to prevent displacement, and there is no pressing groove that can be disengaged, so that the male shell 111 and the female shell 121 are completely locked.

[0056] In one embodiment, the end of the engaging tooth 1114 includes a boss 11142. After the engaging tooth 1114 is inserted into the engaging groove 1214, the boss 11142 is engaged in the engaging groove 1214. When the male connector 11 and the female connector 12 are connected by plug-in docking, the male connector 11 and the female connector 12 can be locked by the cooperation of the engaging tooth 1114 and the engaging groove 1214. After the boss 11142 is engaged in the engaging groove 1214, the male connector 11 and the female connector 12 can be prevented from being displaced left and right.

[0057] Among them, the shape of the snap-in tooth 1114 can be a single-sided slope tooth, and the end of the snap-in tooth 1114 is connected to the docking end face of the male shell 111. The cross-sectional profile of the plug-in hole 1213 is the same as the cross-sectional profile of the plug-in center column 1113. The outer end of the snap-in groove 1214 is flush with the first plug-in end 1211 of the female shell 121. The center position of the snap-in groove 1214 is aligned with the center position of the snap-in tooth 1114. Because a hollow locking cavity is provided at the inner end of the snap-in groove 1214. The length of the snap-in groove 1214 is the same as the length of the connecting groove in the middle of the snap-in tooth 1114. Therefore, the snap-in tooth 1114 can be unidirectionally inserted into the snap-in groove 1214 and locked by the snap-in groove 1214 to prevent the snap-in tooth 1114 from displacement, and there is no pressing groove that can be disengaged.

[0058] In one embodiment, the connector 1 includes two single-rotation connecting sleeves 17; wherein each single-rotation connecting sleeve 17 includes: a one-way card slot, which is arranged on the inner side of the single-rotation connecting sleeve 17; the first one-way tightening end 1112 includes: a second one-way tooth plate 11122, which is used to be connected to the one-way card slot in one of the two single-rotation connecting sleeves 17 by one-way card connection; the second one-way tightening end 1212 includes: a first one-way tooth plate 12122, which is used to be connected to the one-way card slot in the other of the two single-rotation connecting sleeves 17 by one-way card connection.

[0059] In one embodiment, the single-rotation connecting sleeve 17 includes a ratchet, which is arranged on the inner side of the single-rotation connecting sleeve 17. When the single-rotation connecting sleeve 17 is rotated and tightened to the first one-way tightening end 1112, the ratchet is connected to the end of the second one-way tooth plate 11122. When the single-rotation connecting sleeve 17 is rotated and tightened to the second one-way tightening end 1212, the ratchet is connected to the end of the second one-way tooth plate 11122.

[0060] In one embodiment, the second one-way tooth plate 11122 is axially symmetrically arranged on the outer surface of the first one-way tightening end 1112, and protrudes laterally and horizontally from the surface of the first one-way tightening end 1112; the first one-way tooth plate 12122 is axially symmetrically arranged on the outer surface of the second one-way tightening end 1212, and protrudes laterally and horizontally from the surface of the second one-way tightening end 1212.

[0061] like Figure 1 and 2 As shown, the first one-way tightening end 1112 includes a first external thread 11121 and a first ratchet tooth. The first one-way tooth piece 12122 is axially symmetrically arranged on the outer surface of the first one-way tightening end 1112, and the second one-way tooth piece 11122 protrudes horizontally from the surface of the first one-way tightening end 1112, and the end of the second one-way tooth piece 11122 is connected to the ratchet tooth inside the single-rotation connecting sleeve 17. The first external thread 11121 of the first one-way tightening end 1112 is connected to the internal thread of the single-rotation connecting sleeve 17, the second one-way tooth piece 11122 of the first one-way tightening end 1112 is unidirectionally connected to the one-way slot of the single-rotation connecting sleeve 17, and the first ratchet tooth of the first one-way tightening end 1112 is connected to the single-rotation ratchet ring 15 in a cooperative manner. Through the cooperation of the second one-way tooth piece 11122 and the one-way connecting sleeve 17, the one-way connecting sleeve 17 can only be tightened in one direction and cannot be screwed out, so that the public shell 111 is completely stuck and cannot be moved left or right, nor can it be screwed off or removed normally.

[0062] The second one-way tightening end 1212 includes a second external thread 12121, a first one-way tooth piece 12122, and a second ratchet tooth. The first one-way tooth piece 12122 is axially symmetrically arranged on the outer surface of the second one-way tightening end 1212, and the first one-way tooth piece 12122 protrudes horizontally from the surface of the second one-way tightening end 1212, and the end of the first one-way tooth piece 12122 is connected to the ratchet on the inner side of the one-way rotation connecting sleeve 17. Through the cooperation of the first one-way tooth piece 12122 and the one-way rotation connecting sleeve 17, the one-way rotation connecting sleeve 17 can only be tightened in one direction and cannot be screwed out, so that the mother shell 121 is completely stuck and cannot be moved left and right, nor can it be screwed off normally.

[0063] The second external thread 12121 of the second one-way tightening end 1212 is connected to the internal thread of the one-way connecting sleeve 17, the first one-way tooth plate 12122 of the second one-way tightening end 1212 is unidirectionally connected to the one-way slot of the one-way connecting sleeve 17, and the second ratchet tooth of the second one-way tightening end 1212 is connected to the one-way ratchet ring 15.

[0064] It should be noted that, in one embodiment, the second one-way tightening end 1212 and the first one-way tightening end 1112 have the same structure to improve the commonality of parts.

[0065] In one embodiment, the outer surfaces of the male shell 111 and the female shell 121 are both provided with circumferential reinforcing ribs. The female shell 121 is a hollow cylindrical shell, and circumferential reinforcing ribs are provided on the outer surface of the female shell 121, that is, reinforcing ribs are provided around the cylindrical shell. The male shell 111 includes a shell body 1115, and the shell body 1115 is a cylindrical shell. One end of the shell body 1115 is connected to the second plug-in end 1111, and the other end is connected to the plug-in center column 1113. Circumferential reinforcing ribs are provided on the outer surface of the male shell 111, that is, reinforcing ribs are provided around the shell body 1115. By providing circumferential, protruding, transverse and longitudinal reinforcing ribs on the outer surface, the firmness of the male shell 111 and the female shell 121 can be improved.

[0066] The following combination Figure 1-5 The assembly process of the connector is introduced. First, the socket 112 of the male connector 11 and the pin 122 of the female connector 12 are connected and fixed to each other. Then the first wire 13 is inserted into the male connector 11, and the second wire 14 is inserted into the female connector 12. Then, the male shell 111 is inserted from the outside of the first wire 13, and the female shell 121 is inserted from the outside of the second wire 14. The second plug-in end 1111 of the male shell 111 and the first plug-in end 1211 of the female shell 121 are plugged and fixed, so that the male shell 111 and the female shell 121 are connected together. Then, the single-rotation connection sleeve 17 and the single-rotation ratchet ring 15 are inserted from both ends, and the inner side of the single-rotation ratchet ring 15 is plugged and fixed to each other through the ratchet teeth and the protrusion 163 on the limit part 162, and then one single-rotation connection sleeve 17 is tightened to the first one-way tightening end 1112 of the male shell 111, and the other single-rotation connection sleeve 17 is tightened to the second one-way tightening end 1212 of the female shell 121, and the single-rotation ratchet ring 15 is clamped into the single-rotation connection sleeve 17. The single-rotation connection sleeve 17 can only be tightened in one direction through the one-way tooth plate, and the single-rotation connection sleeve 17 is fixed and locked. The single-rotation ratchet ring 15 is driven by the single-rotation connection sleeve 17 to rotate together, and the clamping claw 151 at the tail end of the single-rotation ratchet ring 15 shrinks, and the inner right-angle surface of the clamping claw 151 and the outer end of the fixing seat 161 are tightly fixed and matched with each other, thereby realizing the fixed connection between the single-rotation connection sleeve 17 and the fixing seat 161. At this time, the single-rotation ratchet wheel 15 cannot move left or right due to the limiting portion 162 , thereby completing the assembly of the connector 1 .

[0067] The connector and photovoltaic junction box provided in the embodiments of the present application, while locking the clamping claws, securely connect the single-rotation ratchet ring to the fixing seat on the sealing ring through the limiting portion on the sealing ring, so that the fixing seat can withstand stress, protect the outer skin of the wire from being pinched, and improve the safety of the wire.

[0068] 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.

[0069] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A connector, characterized in that: The connector comprises: a male connector, a female connector, a first wire inserted into the male connector, a second wire inserted into the female connector, two single-rotation ratchet rings, two sealing rings respectively sleeved on the first wire and the second wire, and two single-rotation connection sleeves, each single-rotation connection sleeve is arranged on the outer side of the corresponding single-rotation ratchet ring; wherein, The single-rotation ratchet wheel comprises: Gripper; The sealing ring comprises: A fixing seat and a limiting portion arranged on the fixing seat, wherein the outer surface of the limiting portion is fixedly connected to the inner surface of the single-rotation ratchet ring, so that the single-rotation ratchet ring is connected to the fixing seat; The male connector comprises: A male housing, wherein one end of the male housing close to the first wire is a first one-way tightening end, and when the one-way connecting sleeve is rotated and tightened to the first one-way tightening end, the clamping claw of the one-way ratchet ring is contracted and clamped into the inside of the one-way connecting sleeve, so that the one-way connecting sleeve is fixedly connected to the fixing seat; The female connector is butt-jointed and fixed with the male connector, and the female connector comprises: A female shell, wherein one end of the female shell close to the second wire is a second one-way tightening end. When the one-way connecting sleeve is rotated and tightened to the second one-way tightening end, the clamping claw of the one-way ratchet ring shrinks and clamps into the inside of the one-way connecting sleeve, so that the one-way connecting sleeve is fixedly connected to the fixing seat.

2. The connector according to claim 1, characterized in that: The jaw includes a plurality of ratchet teeth; The sealing ring includes a plurality of protrusions, which are annularly and equidistantly arranged on the outer surface of the limiting portion. When the one-way connecting sleeve is rotated and tightened to the first one-way tightening end and / or the second one-way tightening end, each protrusion is stuck between the corresponding two ratchet teeth.

3. The connector according to claim 1, characterized in that: The mother shell comprises: A first plug-in terminal, the first plug-in terminal being arranged at an end away from the second wire; A plug hole, the plug hole is arranged at the center of the first plug end; A card slot, the card slot is arranged on the outer side of the first plug end; The public shell comprises: A second plug-in terminal, the second plug-in terminal being arranged at an end away from the first wire; A plug-in center column, the plug-in center column is arranged at the center of the second plug-in end, and the plug-in center column is matched and plugged with the plug-in hole; A locking tooth is arranged on the outer side of the second plug-in end, and the locking tooth is matched and locked with the locking groove.

4. The connector according to claim 3, characterized in that: The engaging tooth includes: a connecting groove arranged in the middle of the engaging tooth, and the engaging groove includes: a hollow locking cavity arranged at the inner end of the engaging groove, wherein the length of the connecting groove is the same as the length of the engaging groove, and the center position of the engaging tooth is aligned with the center position of the engaging groove.

5. The connector according to claim 3, characterized in that: The end of the engaging tooth comprises a boss, and after the engaging tooth is inserted into the engaging groove, the boss is engaged in the engaging groove.

6. The connector according to claim 1, characterized in that: The single-rotation connection sleeve comprises: a one-way clamping slot, which is arranged on the inner side of the single-rotation connection sleeve; The first one-way tightening end comprises: a second one-way tooth plate, the second one-way tooth plate is used to be connected to a one-way clamping groove in one of the two one-way connecting sleeves by one-way clamping; The second one-way tightening end includes: a first one-way tooth plate, and the first one-way tooth plate is used for being connected to a one-way clamping groove in another one of the two one-way rotating connecting sleeves in a one-way manner.

7. The connector according to claim 6, characterized in that: The single-rotation connecting sleeve includes a ratchet, which is arranged on the inner side of the single-rotation connecting sleeve. When the single-rotation connecting sleeve is rotated and tightened to the first one-way tightening end, the ratchet is connected to the end of the second one-way tooth plate. When the single-rotation connecting sleeve is rotated and tightened to the second one-way tightening end, the ratchet is connected to the end of the first one-way tooth plate.

8. The connector according to claim 6, characterized in that: The second one-way tooth plate is axially symmetrically arranged on the outer surface of the first one-way tightening end, and protrudes laterally and horizontally from the surface of the first one-way tightening end; the first one-way tooth plate is axially symmetrically arranged on the outer surface of the second one-way tightening end, and protrudes laterally and horizontally from the surface of the second one-way tightening end.

9. The connector according to claim 1, characterized in that: The outer surfaces of the male shell and the female shell are both provided with circumferential reinforcing ribs.

10. A photovoltaic junction box, characterized in that: Comprising a connector as described in any one of claims 1-9.

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