Prefabricated cable joint convenient for wiring

Abstract

The invention belongs to the technical field of power electronics, and particularly relates to a prefabricated cable joint convenient for wiring, which comprises a left connecting pipe and a right connecting pipe which are coaxially arranged, the pull pipe is connected to the right connecting pipe in a sleeved mode, the pull pipe is connected with the left connecting pipe, the pull pipe is connected with the right connecting pipe in an abutting mode, and the right connecting pipe is connected with the left connecting pipe in an abutting mode. The left connecting pipe and the right connecting pipe are connected through the pull pipe, and when the wiring terminal needs to be maintained or replaced, only the pull pipe needs to be pulled open, and the wiring terminal can be maintained or replaced.

Description

Technical Field

[0001] The present invention belongs to the technical field of cable joints, and particularly relates to a prefabricated cable joint convenient for wiring. Background Art

[0002] Existing prefabricated cable joints are usually directly fixedly connected to cable wires, and the terminal blocks of the cable wires are fixed by means of bolt pressing. Due to their relatively simple internal structure, it is not convenient to overhaul and maintain the corresponding terminal blocks in the later stage, and it is also difficult to ensure the simultaneous and uniform stress of multi-core cables during actual operation. In addition, the reuse rate of the cable joints is relatively low, and when the cable joints are damaged, the operation of replacing new cable joints is not fast enough.

[0003] In view of this, there is an urgent need to design a prefabricated cable joint convenient for wiring to solve the above technical problems. Summary of the Invention

[0004] In order to solve one of the above technical problems, the purpose of the present invention is to provide a prefabricated cable joint convenient for wiring, which can conveniently maintain and replace the terminal blocks.

[0005] A prefabricated cable joint convenient for wiring includes a left connecting pipe and a right connecting pipe arranged coaxially; it further includes a pulling pipe, the pulling pipe is sleeved on the right connecting pipe, the pulling pipe is connected to the left connecting pipe, the pulling pipe abuts against the right connecting pipe, and the right connecting pipe abuts against the left connecting pipe.

[0006] Further, the pulling pipe abuts against the right connecting pipe through a stop edge.

[0007] Further, it further includes a first sealing ring, a second sealing ring and a sealing sleeve; the first sealing ring is arranged between the stop edge of the pulling pipe and the right connecting pipe, the second sealing ring is arranged between the pulling pipe and the left connecting pipe, and threaded connection ports are respectively arranged at the outer ends of the left connecting pipe and the right connecting pipe, and the sealing sleeve is threadedly connected to the threaded connection ports for radially sealing the cable wire.

[0008] Further, it further includes a self-locking assembly, the self-locking assembly includes a locking block, a protrusion and a resetting member; a sliding groove is arranged on the left connecting pipe, the locking block is slidably connected in the sliding groove, the resetting member is connected between the inner wall of the sliding groove and the locking block, and the protrusion extending outward is arranged on the locking block; the pulling pipe is provided with a positioning groove adapted to the protrusion.

[0009] Further, the pulling pipe is threadedly connected to the left connecting pipe.

[0010] Further, elastic wire dividers are respectively provided on the left connecting pipe and the right connecting pipe. The elastic wire divider includes a wire dividing column and a wire dividing bushing coaxially connected. The wire dividing bushing is provided with a wire clamping groove, and the wire dividing column is provided with a wire routing groove. The wire clamping groove corresponds to the wire routing groove. The opening spacing of the wire routing groove is greater than the opening spacing of the wire clamping groove. The wire routing groove is used for clamping a terminal, and the wire clamping groove is used for clamping a cable.

[0011] Further, a positioning column penetrating through the wire dividing bushing is also connected to the middle of the wire dividing column, and an inclined angle is provided at the outer end of the positioning column.

[0012] Further, a plurality of anti-slip gaskets are distributed at intervals along the axial direction in the wire routing groove.

[0013] Further, locking assemblies are respectively provided on the left connecting pipe and the right connecting pipe. The locking assembly includes an inner sleeve and an outer sleeve, an adjusting sleeve, a sliding rod, a connecting seat and a wire clamping claw which are coaxially arranged; the inner sleeve is fixedly connected to the right connecting pipe, the outer sleeve is threadedly connected to the inner sleeve, the adjusting sleeve is sleeved on the outer sleeve and the adjusting sleeve abuts against the outer sleeve; the adjusting sleeve is provided with an inclined hole, the outer sleeve is provided with a guiding hole, the connecting seat passes through the guiding hole, one end of the connecting seat is connected to the wire clamping claw, the other end of the connecting seat is connected to the sliding rod, the wire clamping claw corresponds to the wire routing groove, and the sliding rod is clamped in the inclined hole; a static ratchet gear ring is fixedly connected to the adjusting sleeve, a moving ratchet gear ring is sleeved on the inner sleeve and the moving ratchet gear ring is matched with the guiding groove of the inner sleeve, an elastic member is arranged between the inner sleeve and the moving ratchet gear ring, and the moving ratchet gear ring meshes with the static ratchet gear ring; when the pulling pipe is connected to the left connecting pipe, the outer sleeve of the left connecting pipe abuts against the outer sleeve of the right connecting pipe.

[0014] Further, the working end of the wire clamping claw is provided with V-shaped biting teeth.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention connects the left connecting pipe and the right connecting pipe through a pulling pipe. When it is necessary to maintain or replace the terminal, only need to pull open the pulling pipe, and then the terminal can be maintained or replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a connection state diagram of the left connecting pipe and the right connecting pipe of the present invention.

[0017] Figure 2 It is a separated state diagram of the pulling pipe and the left connecting pipe of the present invention.

[0018] Figure 3 It is a separated state diagram of the left connecting pipe and the right connecting pipe of the present invention.

[0019] Figure 4 This is a cross-sectional view of the present invention.

[0020] Figure 5 This is a three-dimensional structural schematic diagram of the left connecting pipe and the right connecting pipe of the present invention.

[0021] Figure 6 This is a structural separation diagram of the present invention.

[0022] Figure 7 This is a partial structural separation diagram of the present invention.

[0023] Figure 8 This is a three-dimensional structural schematic diagram of the locking assembly and the wire splitter of the present invention.

[0024] Figure 9 This is a three-dimensional structural schematic diagram of the external thread sleeve, the sliding rod, the wire clamping claw and the wire splitter of the present invention.

[0025] Figure 10 This is an exploded view of the external thread sleeve, the sliding rod, the wire clamping claw and the adjusting sleeve of the present invention.

[0026] Figure 11 This is a three-dimensional structural schematic diagram of the self-locking assembly and the follow-up clamping position assembly of the present invention.

[0027] Among them, the above-mentioned drawings include the following reference numerals: 1, left connecting pipe; 2, right connecting pipe; 3, pulling pipe; 30, anti-slip pattern; 31, positioning groove; 32, flange; 4, wire splitting column; 40, wiring groove; 41, anti-slip gasket; 42, wire splitting sleeve; 43, wire clamping groove; 44, positioning column; 5, inner sleeve; 50, outer sleeve; 51, sliding rod; 52, wire clamping claw; 53, adjusting sleeve; 54, inclined hole; 501, guiding groove; 502, guiding hole; 503, V-shaped engaging teeth; 6, static ratchet ring; 60, moving ratchet ring; 61, elastic member; 7, locking block; 70, protrusion; 71, reset member; 8, sealing ring I; 80, sealing ring II; 9, threaded connection port; 90, sealing sleeve; 10, sliding groove; a, cable; b, terminal. Detailed implementation manners

[0028] Referring to an embodiment herein means that a specific feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present invention. The phrase appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0029] See Figures 1 to 11, a prefabricated cable joint provided by the present invention that facilitates wiring, includes a left connecting pipe 1, a right connecting pipe 2, and a pulling pipe 3; the left connecting pipe 1 and the right connecting pipe 2 are coaxially arranged, the pulling pipe 3 is sleeved on the outer wall of the right connecting pipe 2, the pulling pipe 3 is connected to the left connecting pipe 1, the pulling pipe 3 abuts against the right connecting pipe 2, and the right connecting pipe 2 abuts against the left connecting pipe 1. The present invention connects the left connecting pipe 1 and the right connecting pipe 2 through the pulling pipe 3. When it is necessary to maintain or replace the wiring terminal b, only need to pull open the pulling pipe 3, then the wiring terminal b can be maintained or replaced.

[0030] Preferably, the pulling pipe 3 abuts against the right connecting pipe 2 through a stop edge 32.

[0031] Preferably, it further includes a first sealing ring 8, a second sealing ring 80, and a sealing sleeve 90; the first sealing ring 8 is arranged between the stop edge of the pulling pipe 3 and the right connecting pipe 2, the second sealing ring 80 is arranged between the pulling pipe 3 and the left connecting pipe 1, threaded connection ports 9 are respectively arranged at the outer ends of the left connecting pipe 1 and the right connecting pipe 2, and the sealing sleeve 90 is threadedly connected to the threaded connection port 9 for radially sealing the cable a. Through the above-mentioned multiple sealing structures, it is beneficial to ensure the sealing performance of the cable a and the wiring terminal b and the safety of related use.

[0032] Preferably, it further includes a self-locking component. The self-locking component includes a locking block 7, a protrusion 70, and a resetting member 71. The left connecting pipe 1 is provided with a sliding groove 10. The locking block 7 is slidably connected in the sliding groove 10. A resetting member 71 is connected between the inner wall of the sliding groove 10 and the locking block 7. The locking block 7 is provided with a protrusion 70 extending outward; the pulling pipe 3 is provided with a positioning groove 31 adapted to the protrusion 70. The resetting member 71 is a compression spring for providing an axial pressing force to the locking block 7. When the right connecting pipe 2 is docked and locked with the left connecting pipe 1 through the pulling pipe 3, the protrusion 70 can automatically embed into the positioning groove 31 to form a mechanical interlock, which is beneficial to further improve the connection stability between the left connecting pipe 1 and the right connecting pipe 2, and can effectively prevent loosening due to vibration, making the use safer.

[0033] Preferably, the pulling pipe 3 is threadedly connected to the left connecting pipe 1.

[0034] Preferably, the outer surface of the pulling pipe 3 is provided with anti-slip lines 30. The anti-slip lines 30 facilitate moving and rotating adjustment of the pulling pipe 3.

[0035] Preferably, the left connecting pipe 1 and the right connecting pipe 2 are respectively provided with elastic wire dividers. The elastic wire divider includes a wire dividing column 4 and a wire dividing sleeve 42 which are coaxially connected. The wire dividing sleeve 42 is circumferentially provided with a plurality of arc-shaped wire clamping grooves 43. The wire dividing column 4 is circumferentially provided with a plurality of arc-shaped wire routing grooves 40. The arc-shaped wire clamping grooves 43 correspond to the arc-shaped wire routing grooves 40 one by one. The opening spacing of the arc-shaped wire routing grooves 40 is greater than the opening spacing of the arc-shaped wire clamping grooves 43. The arc-shaped wire routing grooves 40 are used for clamping connection with the terminal b. The arc-shaped wire clamping grooves 43 are used for clamping connection with the cable a. The elastic wire divider clamps and positions the terminal b and the cable a respectively through the wire dividing column 4 and the wire dividing sleeve 42.

[0036] Preferably, a positioning column 44 penetrating through the wire dividing sleeve 42 is further connected to the middle of the wire dividing column 4. An inclined angle is provided at the outer end of the positioning column 44. By inserting the positioning column 44 between the terminals b, quick installation and positioning of the wire dividing column 4 and the wire dividing sleeve 42 are realized.

[0037] Preferably, a plurality of anti-slip gaskets 41 are axially and spacedly distributed in the wire routing groove 40. The anti-slip gaskets 41 can increase the friction coefficient with each terminal b, and thus are beneficial to improving the connection stability of each terminal b.

[0038] Preferably, the left connecting pipe 1 and the right connecting pipe 2 are respectively provided with locking components. The locking components include an inner sleeve 5, an outer sleeve 50, an adjusting sleeve 53, a sliding rod 51, a connecting seat and a wire clamping claw 52 which are coaxially arranged; the inner sleeve 5 is fixedly connected with the right connecting pipe 2, the outer sleeve 50 is threadedly connected with the inner sleeve 5, the adjusting sleeve 53 is sleeved on the outer sleeve 50 and the adjusting sleeve 53 abuts against the outer sleeve 50; the adjusting sleeve 53 is provided with an inclined hole 54, the outer sleeve 50 is provided with a guiding hole 502, the connecting seat passes through the guiding hole 502, one end of the connecting seat is connected with the wire clamping claw 52, the wire clamping claw 52 corresponds to the wiring groove 40, one end of the connecting seat is connected with the sliding rod 51, and the sliding rod 51 is clamped in the inclined hole 54; the adjusting sleeve 53 is fixedly connected with a static ratchet ring 6, the inner sleeve 5 is sleeved with a dynamic ratchet ring 60 and the dynamic ratchet ring 60 is fitted with the guiding groove 501 of the inner sleeve 5, an elastic member 61 is arranged between the inner sleeve 5 and the dynamic ratchet ring 60, and the dynamic ratchet ring 60 meshes with the static ratchet ring 6; when the pulling pipe 3 is connected with the left connecting pipe 1, the outer sleeve 50 of the left connecting pipe 1 abuts against the outer sleeve 50 of the right connecting pipe 2. The wire dividing column 4, the wire dividing clamping sleeve 42 and the positioning column 44 are clamped between the respective wiring terminals b, so that the wire dividing column 4 is just located inside the outer sleeve 50, so that the wiring groove 40 is aligned with the wire clamping claw 52. When the adjusting sleeve 53 is rotated, the inclined hole 54 will form a thrust on the sliding rod 51, so that the circumferentially uniformly distributed wire clamping claws 52 can synchronously radially contract, realizing simultaneous and balanced clamping and fixing of the respective wiring terminals b of the multi-core cable a, that is, it is applicable to different models of cable a, and has a wide application range; the elastic member 61 is a compression spring, which is used to provide an axial pressing force on the dynamic ratchet ring 60, so that the dynamic ratchet ring 60 can be automatically locked and fitted with the static ratchet ring 6. The static ratchet ring 6 is fixed on the adjusting sleeve 53, and the dynamic ratchet ring 60 and the static ratchet ring 6 are mutually clamped and meshed. The meshing angle of the static ratchet ring 6 is associated with the rotation direction of the adjusting sleeve 53. During use, only the adjusting sleeve 53 is allowed to rotate and adjust unidirectionally, which can prevent accidental loosening. When it is necessary to adjust the adjusting sleeve 53 in the reverse direction, when the wire clamping claw 52 is loosened from the respective wiring terminals b, it is necessary to push the dynamic ratchet ring 60 inward to separate the dynamic ratchet ring 60 from the static ratchet ring 6.

[0039] Preferably, the working end of the wire clamping claw 52 is provided with a V-shaped biting tooth 503. The V-shaped biting tooth 503 can enhance the tightening force on the wiring terminal b.

[0040] During use, strip the insulating cortex at the end of the cable a to expose the wire, then install the corresponding terminal b, and then pass it through the inside of the left connecting pipe 1 and the right connecting pipe 2. Subsequently, insert the splitter between the terminals b respectively so that each terminal b is evenly distributed in the arc-shaped wiring groove 40. The cable a is clamped in the corresponding arc-shaped wire clamping groove 43, which can achieve the purpose of preliminary positioning of the inserted terminal b and the cable a. Rotate the adjusting sleeve 53, drive the slide rod 51 through the inclined hole 54 thereon to drive the wire clamping claw 52 to radially contract, so that the V-shaped biting teeth 503 can abut against the terminal b to form multi-point biting. While the adjusting sleeve 53 rotates, it will drive the static ratchet ring 6 to rotate synchronously, and through the tension and pushing action of the elastic member 61, the moving ratchet ring 60 can follow and lock the static ratchet ring 6 that rotates unidirectionally. Furthermore, it is beneficial to achieve self-locking by rotating the adjusting sleeve 53 at any angle, which is beneficial to the connection of cable a with different diameters. After the above operations are completed, insert the left connecting pipe 1 and the right connecting pipe 2 into each other, slide and rotate the pull pipe 3 until the protrusion 70 of the locking block 7 automatically snaps into the positioning groove 31, that is, complete the mechanical interlock. At this time, the outer sleeve 50 of the left connecting pipe 1 abuts against the outer sleeve 50 of the right connecting pipe 2. By tightening the sealing sleeve 90 at the threaded connection port 9, it is used to form radial sealing for the connected cable a; and through the cooperation of the first sealing ring 8 and the second sealing ring 80, it can form multiple radial sealing effects on the connected cable a and the terminal b.

[0041] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A prefabricated cable joint facilitating wiring, comprising a left connecting pipe (1) and a right connecting pipe (2) arranged coaxially, characterized in that: It further includes a pulling pipe (3). The pulling pipe 3 is sleeved on the right connecting pipe (2). The pulling pipe (3) is connected to the left connecting pipe (1). The pulling pipe (3) abuts against the right connecting pipe (2), and the right connecting pipe (2) abuts against the left connecting pipe (1).

2. The prefabricated cable joint facilitating wiring according to claim 1, characterized in that: The pulling pipe (3) abuts against the right connecting pipe (2) through a stop edge (32).

3. The prefabricated cable joint facilitating wiring according to claim 2, characterized in that: It further includes a first sealing ring (8), a second sealing ring (80) and a sealing sleeve (90); the first sealing ring (8) is arranged between the stop edge of the pulling pipe (3) and the right connecting pipe (2), the second sealing ring (80) is arranged between the pulling pipe (3) and the left connecting pipe (1), threaded connection ports (9) are respectively arranged at the outer ends of the left connecting pipe (1) and the right connecting pipe (2), and the sealing sleeve (90) is threadedly connected to the threaded connection port (9) for radially sealing the cable (a).

4. The prefabricated cable joint facilitating wiring according to claim 1, characterized in that: It further includes a self-locking component. The self-locking component includes a locking block (7), a protrusion (70) and a reset member (71); a sliding groove (10) is arranged on the left connecting pipe (1). The locking block (7) is slidably connected in the sliding groove (10). The reset member (71) is connected between the inner wall of the sliding groove (10) and the locking block (7). The locking block (7) is provided with the protrusion (70) extending outwards; the pulling pipe (3) is provided with a positioning groove (31) adapted to the protrusion (70).

5. The prefabricated cable joint facilitating wiring according to claim 1, characterized in that: The pulling pipe (3) is threadedly connected to the left connecting pipe (1).

6. The prefabricated cable joint facilitating wiring according to claim 1, characterized in that: The left connecting pipe (1) and the right connecting pipe (2) are respectively provided with elastic wire dividers. The elastic wire divider includes a wire dividing column (4) and a wire dividing card sleeve (42) connected coaxially. The wire dividing card sleeve (42) is provided with a wire clamping groove (43). The wire dividing column (4) is provided with a wiring groove (40). The wire clamping groove (43) corresponds to the wiring groove (40). The opening spacing of the wiring groove (40) is larger than the opening spacing of the wire clamping groove (43). The wiring groove (40) is used for clamping the wiring terminal (b), and the wire clamping groove (43) is used for clamping the cable (a).

7. The prefabricated cable joint facilitating wiring according to claim 6, characterized in that: A positioning column (44) penetrating through the wire dividing card sleeve (42) is further connected to the middle of the wire dividing column (4). The outer end of the positioning column (44) is provided with an inclined angle.

8. A prefabricated cable joint facilitating wiring according to claim 6, characterized in that: A plurality of anti-slip gaskets (41) are distributed at intervals along the axial direction in the wiring groove (40).

9. A prefabricated cable joint facilitating wiring according to claim 6, characterized in that: The left connecting pipe (1) and the right connecting pipe (2) are respectively provided with locking components. The locking components include an inner sleeve (5) and an outer sleeve (50) arranged coaxially, an adjusting sleeve (53), a sliding rod (51), a connecting seat and a wire clamping claw (52); the inner sleeve (5) is fixedly connected to the right connecting pipe (2), the outer sleeve (50) is threadedly connected to the inner sleeve (5), the adjusting sleeve (53) is sleeved on the outer sleeve (50) and the adjusting sleeve (53) abuts against the outer sleeve (50); the adjusting sleeve (53) is provided with an inclined hole (54), the outer sleeve (50) is provided with a guiding hole (502), the connecting seat passes through the guiding hole (502), one end of the connecting seat is connected to the wire clamping claw (52), the other end of the connecting seat is connected to the sliding rod (51), the wire clamping claw (52) corresponds to the wiring groove (40), and the sliding rod (51) is clamped in the inclined hole (54); the adjusting sleeve (53) is fixedly connected with a static ratchet ring (6), the inner sleeve (5) is sleeved with a dynamic ratchet ring (60) and the dynamic ratchet ring (60) is engaged with the guiding groove (501) of the inner sleeve (5), an elastic member (60) is arranged between the inner sleeve (5) and the dynamic ratchet ring (60), and the dynamic ratchet ring (60) is engaged with the static ratchet ring (6); when the pulling pipe (3) is connected to the left connecting pipe (1), the outer sleeve (50) of the left connecting pipe (1) abuts against the outer sleeve (50) of the right connecting pipe (2).

10. A prefabricated cable joint facilitating wiring according to claim 9, characterized in that: The working end of the wire clamping claw (52) is provided with V-shaped biting teeth (503).

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