A quick connector assembly for cables of a distribution box

Abstract

The present invention relates to the technical field of cable quick connectors, and specifically, it is a cable quick connector assembly for a distribution box. It includes an insulating connection pipe with external threads. A cable connection assembly is provided in the middle of the insulating connection pipe for connecting with the conductive core of the cable to be connected. The external thread of the insulating connection pipe is connected with a connection sleeve. The insulating connection pipe is rotatably connected with a first pressing assembly and a second pressing assembly. The connection sleeve is used to sequentially push the first pressing assembly to press the cable connection assembly and the conductive core, and push the second pressing assembly to press the insulating part of the cable. The second pressing assembly includes two oppositely arranged clamping blocks. When the connection sleeve moves to the outside of the second pressing assembly, the two clamping blocks push the insulating part of the cable to bend into an S shape. When the cable is pulled outwards, the clamping force of the two clamping blocks increases. This device is simple to operate, convenient and fast to use, and effectively improves the construction efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of cable quick connectors, and specifically to a cable quick connector assembly for a distribution box. Background Art

[0002] The traditional cable connection method is to tighten the two ends of the cable to be connected and wrap insulating tape. During this process, it is easy for the resistance at the cable connection to overheat, and it is prone to overheating during use. Extra tools are needed for operation, and the operation is rather laborious.

[0003] To solve the above problems, for the cable quick connector with the Chinese patent publication number CN103401206B, symmetric cable insertion interfaces are respectively arranged inside both ends of an insulating rod. One end face of the cable insertion interface is flush with the end face of the insulating rod, and the other end is connected through a connecting cable. The cable insertion interface is a hollow metal rod, and threaded holes for fixing the cable are provided on the cable insertion interface. Bolt insertion holes corresponding to the threaded holes are provided on the side wall of the insulating rod, and at least one groove is provided behind the bolt insertion holes. This device can quickly assemble the cable, and the operation is fast and convenient.

[0004] However, when this application is specifically used, it is still necessary to use fastening bolts to fasten the cable and the cable insertion interface, and it is necessary to sleeved a rubber protective sleeve at the end of the cable to be connected. After the connection is completed, it is also necessary to fix the rubber protective sleeve and the cable, and the operation is still rather cumbersome.

[0005] Therefore, the present application provides a cable quick connector assembly for a distribution box to solve the problem that the cable quick connection operation in the prior art is rather inconvenient and improve the cable quick connection efficiency. Summary of the Invention

[0006] To solve the above problems, the present invention provides a cable quick connector assembly for a distribution box.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a cable quick connector assembly for a distribution box, including an insulating connection pipe with external threads. A cable connection assembly is arranged in the middle of the insulating connection pipe for connecting with the conductive core of the cable to be connected. The insulating connection pipe is externally threadedly connected with a connection sleeve. The insulating connection pipe is rotatably connected with a first pressing assembly and a second pressing assembly. The connection sleeve is used to sequentially push the first pressing assembly to press the cable connection assembly and the conductive core, and push the second pressing assembly to press the insulating part of the cable;

[0008] The second pressing assembly includes two oppositely arranged clamping blocks. When the connection sleeve moves to the outside of the second pressing assembly, the two clamping blocks push the insulating part of the cable to bend into an S shape. When the cable is pulled outwards, the clamping force of the two clamping blocks increases.

[0009] As an optimization, the cable connection assembly, the insulating connection pipe and the connection sleeve are coaxially arranged. A positioning piece is threadedly connected to the middle of the insulating connection pipe. During use, the positioning piece is attached to the distribution box. The two ends of the insulating connection pipe are respectively located outside and inside the outer shell of the distribution box.

[0010] As an optimization, the cable connection assembly includes a transmission rod and connection parts connected to both ends of the transmission rod. The connection parts include a plurality of connection elastic pieces. The middle of the connection elastic piece is bent towards the axis of the insulating connection pipe, and the outer end of the connection elastic piece extends towards the inner wall direction of the insulating connection pipe;

[0011] The first pressing assembly is used to push the connection elastic piece to move towards the axis of the insulating connection pipe. When the first pressing assembly pushes the connection elastic piece to move, the middle of the connection elastic piece contacts and squeezes the conductive core.

[0012] As an optimization, the insulating connection pipe is provided with a first connection hole. The first pressing assembly includes a pressing block. The middle of the pressing block is limited and movably arranged in the first connection hole. The tip of the pressing block contacts the cable connection assembly. When the connection sleeve moves to the outside of the pressing block, the pressing block moves along the axis of the first connection hole towards the cable assembly.

[0013] As an optimization, the insulating connection pipe is provided with a second connection hole. The second pressing assembly is movably arranged in the second connection hole. A limiting seat is arranged inside the insulating connection pipe. A return spring is arranged inside the limiting seat. A connection ear is arranged outside the second pressing assembly. The connection ear is slidably arranged inside the limiting seat and is connected to the return spring.

[0014] As an optimization, the outer edge of the clamping block is provided with a chamfer to facilitate the rotation and movement of the connection sleeve to the outside of the second pressing assembly;

[0015] A guiding rod is arranged inside the insulating connection pipe. A guiding groove is formed inside the clamping block. The guiding rod is slidably arranged inside the guiding groove. The length direction of the guiding groove is perpendicular to the axis of the insulating connection pipe.

[0016] As an optimization, the side of the clamping block opposite to the axis of the insulating connection pipe is S-shaped, and the two clamping blocks can be clamped relative to each other;

[0017] The two clamping blocks are respectively a first clamping block and a second clamping block. On one side of the first clamping block opposite to the axis of the insulating connecting pipe, there are a first concave portion and a first convex portion. On the corresponding side of the second clamping block opposite to the axis of the insulating connecting pipe, there are a second convex portion and a second concave portion. The first concave portion and the second convex portion are located at one end of the clamping block close to the cable connection assembly. The first concave portion is an arc depression with a uniform curvature, and the curvature of the middle of the second convex portion gradually increases towards the cable connection assembly.

[0018] A cable quick connector assembly for a distribution box in this solution has the following beneficial effects:

[0019] The cable quick connector assembly of this application has a simple structure. The cable is quickly connected through the insulating connecting pipe, and the conductive part is connected through the first pressing assembly, and the insulating part of the cable is held by the second pressing assembly, avoiding overheating or breaking of the wire caused by excessive local stress. And when the cable is subjected to an outward pulling force, the clamping force of the second pressing assembly will increase, which can effectively prevent the cable connection wire from coming off and ensure the connection effect.

[0020] A connection sleeve is arranged outside the insulating connecting pipe. By rotating the connection sleeve, the cable can be efficiently connected. The operation is simple, the use is convenient and fast, and the construction efficiency is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an axonometric schematic diagram of the present invention.

[0022] Figure 2 It is a front view schematic diagram of the present invention.

[0023] Figure 3 For the present invention Figure 2 The sectional structure schematic diagram taken along A-A of.

[0024] Figure 4 It is a position structure schematic diagram of the first pressing assembly and the second pressing assembly of the present invention.

[0025] Figure 5 It is a schematic diagram of the use state of the present invention.

[0026] Among them, 1. Insulating connecting pipe, 2. Conductive core, 3. Connection sleeve, 4. Insulating part, 5. Positioning piece, 6. Distribution box housing, 7. Transmission rod, 8. Connection elastic piece, 9. First connection hole, 10. Pressing block, 11. Limiting seat, 12. Return spring, 13. Guide rod, 14. Guide groove, 15. First clamping block, 16. Second clamping block, 17. First concave portion, 18. First convex portion, 19. Second convex portion, 20. Second concave portion. DETAILED DESCRIPTION OF THE INVENTION

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is customarily placed during use. It 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 should not be construed as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0028] As Figures 1-5 shown, a quick cable connector assembly for a distribution box includes an insulating connection pipe 1 with external threads. A cable connection assembly is provided in the middle of the insulating connection pipe 1 for connecting with the conductive core 2 of the cable to be connected. The insulating connection pipe 1 is externally threadedly connected with a connection sleeve 3. The insulating connection pipe 1 is rotationally connected with a first pressing assembly and a second pressing assembly. The connection sleeve 3 is used to sequentially push the first pressing assembly to press the cable connection assembly and the conductive core 2, and push the second pressing assembly to press the insulating part 4 of the cable.

[0029] The second pressing assembly includes two oppositely arranged clamping blocks. When the connection sleeve 3 moves to the outside of the second pressing assembly, the two clamping blocks push the insulating part 4 of the cable to bend into an S shape. When the cable is pulled outwards, the clamping force of the two clamping blocks increases.

[0030] The width of the first pressing assembly is smaller than the width of the second pressing assembly. The direction of the first pressing assembly towards the cable connection assembly is the tip. When the first pressing assembly is pushed inwards, it can press the cable connection assembly. The second pressing assembly is used to connect the insulating part 4 to increase the contact area with the cable. The width of the clamping block is not less than the diameter of the cable to ensure the connection effect of the cable.

[0031] As Figure 5 shown, the cable connection assembly, the insulating connection pipe 1 and the connection sleeve 3 are coaxially arranged. A positioning piece 5 is threadedly connected in the middle of the insulating connection pipe 1. During use, the positioning piece 5 is attached to the distribution box. The two ends of the insulating connection pipe 1 are respectively located outside and inside the distribution box housing 6.

[0032] Two positioning pieces 5 are respectively arranged on the left and right sides of the distribution box housing 6 to connect and fix the position of the insulating connection pipe 1. The connecting sleeve 3 can rotate along the length direction of the insulating connection pipe 1. To ensure the connection and sealing effects, the inner wall of the connecting sleeve 3 and the outer layer of the insulating connection pipe 1 can be made of elastic materials. When the connecting sleeve 3 is threadedly connected to the insulating connection pipe 1, sealing can be achieved to prevent external rainwater from entering the inside of the insulating connection pipe 1 through the connecting sleeve 3.

[0033] As Figure 3 and Figure 4 shown, the cable connection assembly includes a transmission rod 7 and connection parts connected to both ends of the transmission rod 7. The connection parts include a plurality of connection elastic pieces 8. The middle part of the connection elastic piece 8 is bent towards the axis of the insulating connection pipe 1, and the outer end of the connection elastic piece 8 extends towards the inner wall direction of the insulating connection pipe 1;

[0034] The first pressing assembly is used to push the connection elastic piece 8 to move towards the axis of the insulating connection pipe 1. When the first pressing assembly pushes the connection elastic piece 8 to move, the middle part of the connection elastic piece 8 contacts and squeezes the conductive core 2.

[0035] The middle part of the connection elastic piece 8 is bent towards the axis direction of the insulating connection pipe 1 to form a connection bent part. When not connected, the connection bent part can either contact or not contact the conductive core 2. When the cable is connected to the insulating connection pipe 1, the first pressing assembly presses the connection elastic piece 8, and the connection bent part and the conductive core 2 of the cable are in a pressed state.

[0036] As Figure 3 shown, the insulating connection pipe 1 is provided with a first connection hole 9. The first pressing assembly includes a pressing block 10. The middle part of the pressing block 10 is limited and movably arranged in the first connection hole 9. The tip of the pressing block 10 contacts the cable connection assembly. When the connecting sleeve 3 moves to the outside of the pressing block 10, the pressing block 10 moves along the axis of the first connection hole 9 towards the cable assembly.

[0037] The middle part of the pressing block 10 bulges outwards to form a limiting ring. The limiting ring is movably arranged in the first connection hole 9 to prevent the pressing block 10 from disengaging from the first connection hole 9; the end opening of the corresponding first connection hole 9 should be smaller than the inner diameter of the first connection hole 9 to limit the pressing block 10.

[0038] As Figure 3 shown, the insulating connection pipe 1 is provided with a second connection hole. The second pressing assembly is movably arranged in the second connection hole. A limiting seat 11 is arranged inside the insulating connection pipe 1. A return spring 12 is arranged inside the limiting seat 11. A connection ear is arranged outside the second pressing assembly. The connection ear is slidably arranged inside the limiting seat 11 and is connected to the return spring 12.

[0039] The movable range of the second pressing assembly is the inner length of the limit seat 11. The second pressing assembly can maintain a state of popping outwards under the action of the return spring 12. When it is necessary to press the cable, the second pressing assembly can be squeezed inwards through the connecting sleeve 3.

[0040] As Figure 4 shown, a chamfer is provided on the outer edge of the clamping block, which facilitates the connecting sleeve 3 to rotate and move to the outside of the second pressing assembly;

[0041] A guide rod 13 is provided inside the insulating connecting pipe 1. A guide groove 14 is formed inside the clamping block. The guide rod 13 is slidably arranged inside the guide groove 14. The length direction of the guide groove 14 is perpendicular to the axis of the insulating connecting pipe 1.

[0042] According to Figure 4 the direction shown, when the connecting sleeve 3 is pushed upwards from below to the lower part of the clamping block, the clamping block rotates inwards with the position where the guide rod 13 is located as the axis, so that the insulating part 4 of the cable is squeezed to form a C bend. When the connecting sleeve 3 is continuously moved, the clamping block moves inwards along the guide rod 13, and the cable is squeezed and held by the clamping block, so that the cable is in an S shape.

[0043] As Figure 4 shown, the side of the clamping block opposite to the axis of the insulating connecting pipe 1 is S-shaped, and the two clamping blocks can be engaged with each other relatively;

[0044] The two clamping blocks are respectively a first clamping block 15 and a second clamping block 16. A first concave part 17 and a first convex part 18 are provided on the side of the first clamping block 15 opposite to the axis of the insulating connecting pipe 1. A second convex part 19 and a second concave part 20 are correspondingly provided on the side of the second clamping block 16 opposite to the axis of the insulating connecting pipe 1. The first concave part 17 and the second convex part 19 are located at one end of the clamping block close to the cable connecting assembly. The first concave part 17 is a circular arc depression with uniform curvature. The curvature of the middle part of the second convex part 19 gradually increases towards the cable connecting assembly.

[0045] According to Figure 4 the direction shown, the curvature of the upper middle part of the second convex part 19 is the same as that of the first concave part 17. The outermost end of the second convex part 19 can be closely attached to the inside of the first concave part 17, so that the upper part of the second convex part 19 can be attached and connected to the first concave part 17. The curvature of the lower part of the second convex part 19 gradually increases. When the cable is pulled outwards, the cable pulls the clamping block to rotate towards the outer end of the cable around the position of the guide rod 13, so that the second convex part 19 is clamped into the first concave part 17 and is gradually clamped tightly to prevent the cable from coming out.

[0046] Usage method:

[0047] When the device is in specific use, the insulating connecting pipe 1 is inserted into the assembly hole of the distribution box housing 6, and the positioning piece 5 is used to position the connection between the insulating connecting pipe 1 and the distribution box housing 6. The positioning piece 5 is threadedly connected to the insulating connecting pipe 1 to prevent the insulating connecting pipe 1 from shaking and displacing.

[0048] The connecting sleeve 3 is rotated to the middle of the insulating connecting pipe 1, and the pressing block 10 and the clamping block are exposed. The end of the cable is stripped of insulation so that the conductive core 2 at the end of the cable is exposed. The cable is inserted into the axis of the insulating connecting pipe 1, and the conductive core 2 is inserted between the plurality of connecting elastic pieces 8 and contacts the connecting elastic pieces 8.

[0049] Rotate the connecting sleeve 3 to make the connecting sleeve 3 squeeze the pressing block 10 inward. The pressing block 10 pushes the connecting elastic pieces 8 inward so that the connecting elastic pieces 8 are tightly squeezed against the conductive core 2.

[0050] Continue to rotate the connecting sleeve 3 to make the connecting sleeve 3 squeeze the end of the clamping block, causing the end of the clamping block to rotate inward. The first clamping block 15 and the second clamping block 16 tightly squeeze the insulating part 4 of the cable. Continue to rotate the connecting sleeve 3, and the cable is held by the first clamping block 15 and the second clamping block 16 to make the cable in an S-shaped structure.

[0051] Just connect the two cables to be connected to both ends of the insulating connecting pipe 1. To ensure the sealing effect of the insulating connecting pipe 1, a sealing end cover or sealing putty can also be provided at the end of the insulating connecting pipe 1 to prevent water from entering the end of the insulating connecting pipe 1. The sealing end cover or sealing putty is detachably connected and does not affect the disassembly of the cable.

[0052] When the staff makes a misoperation or an external force pulls the cable, the cable pulls the first clamping block 15 and the second clamping block 16 to rotate, causing the end of the clamping block adjacent to the middle of the insulating connecting pipe 1 to rotate inward and toward the outer end of the insulating connecting pipe 1, so that the second protrusion 19 is caught in the first recess 17. Since the curvature of the outer end of the second protrusion 19 gradually increases, the clamping force between the two further increases, preventing the cable from disengaging between the two clamping blocks.

[0053] The above specific implementation manners are only specific cases of the present invention. The patent protection scope of the present invention includes but is not limited to the product forms and styles of the above specific implementation manners. Any distribution box cable quick connector assembly that meets the claims of the present invention and any appropriate changes or modifications made by those of ordinary skill in the relevant technical fields shall fall within the patent protection scope of the present invention.

Claims

1. A distribution box cable quick connector assembly, characterized in that: The invention comprises an insulating connecting tube (1) with threads on the outside, a cable connecting assembly is arranged in the middle of the insulating connecting tube (1) for connecting with the conductive core (2) of the cable to be connected, a connecting sleeve (3) is connected to the external threads of the insulating connecting tube (1), a first pressing assembly and a second pressing assembly are rotatably connected to the insulating connecting tube (1), and the connecting sleeve (3) is used to push the first pressing assembly to press the cable connecting assembly and the conductive core (2), and push the second pressing assembly to press the insulating part (4) of the cable in turn; The second clamping assembly comprises two clamping blocks arranged opposite to each other. When the connecting sleeve (3) moves to the outside of the second clamping assembly, the two clamping blocks push the insulating portion (4) of the cable to bend into an S shape. When the cable is pulled outward, the clamping force of the two clamping blocks increases. The insulating connecting tube (1) is provided with a second connecting hole, the second clamping assembly is movably arranged in the second connecting hole, a limit seat (11) is arranged on the inner side of the insulating connecting tube (1), a return spring (12) is arranged inside the limit seat (11), and a connecting ear is arranged outside the second clamping assembly, the connecting ear is slidably arranged inside the limit seat (11) and is connected to the return spring (12); A guide rod (13) is arranged on the inner side of the insulating connecting tube (1), a guide groove (14) is provided inside the clamping block, the guide rod (13) is slidably arranged inside the guide groove (14), and the length direction of the guide groove (14) is perpendicular to the axis of the insulating connecting tube (1); The side of the clamping block opposite to the axis of the insulating connecting tube (1) is S-shaped, and the two clamping blocks can be relatively engaged; The two clamping blocks are respectively a first clamping block (15) and a second clamping block (16); a first recess (17) and a first protrusion (18) are provided on the side of the first clamping block (15) opposite to the axis of the insulating connecting tube (1); a second protrusion (19) and a second recess (20) are correspondingly provided on the side of the second clamping block (16) opposite to the axis of the insulating connecting tube (1); the first recess (17) and the second protrusion (19) are located at one end of the clamping block close to the cable connecting assembly; the first recess (17) is a circular arc depression with uniform curvature; and the curvature of the middle part of the second protrusion (19) gradually increases toward the direction of the cable connecting assembly.

2. A distribution box cable quick connector assembly according to claim 1, characterized in that: The cable connection assembly, the insulating connection tube (1) and the connection sleeve (3) are coaxially arranged, and a positioning piece (5) is threadedly connected to the middle of the insulating connection tube (1). When in use, the positioning piece (5) is arranged in contact with the distribution box, and the two ends of the insulating connection tube (1) are respectively located on the outside and the inside of the distribution box shell (6).

3. A distribution box cable quick connector assembly according to claim 1, characterized in that: The cable connection assembly comprises a transmission rod (7) and a connection portion connected to both ends of the transmission rod (7), the connection portion comprising a plurality of connection springs (8), the middle portion of the connection springs (8) being bent toward the axis of the insulating connection tube (1), and the outer ends of the connection springs (8) extending toward the inner wall of the insulating connection tube (1); The first clamping assembly is used to push the connecting spring (8) to move toward the axis of the insulating connecting tube (1); when the first clamping assembly pushes the connecting spring (8) to move, the middle of the connecting spring (8) contacts and squeezes the conductive core (2).

4. A distribution box cable quick connector assembly according to claim 1, characterized in that: The insulating connecting tube (1) is provided with a first connecting hole (9), and the first clamping assembly includes a clamping block (10). The middle limiter of the clamping block (10) is movably arranged in the first connecting hole (9), and the tip of the clamping block (10) contacts the cable connecting assembly. When the connecting sleeve (3) moves to the outside of the clamping block (10), the clamping block (10) moves along the axis of the first connecting hole (9) toward the direction of the cable assembly.

5. A distribution box cable quick connector assembly according to claim 1, characterized in that: The outer edge of the clamping block is provided with a chamfer to facilitate the rotation and movement of the connecting sleeve (3) to the outside of the second clamping assembly.

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