Insulated branch line clamp and branch line connector

Abstract

The present invention discloses an insulating branch wire clamp, comprising an insulating shell made of insulating material and a metal wire clamp made of conductive material. The metal wire clamp is used to connect the branch line core and the branch core for conductivity, and the insulating shell is arranged on the outside of the metal wire clamp. The present invention also discloses a branch line connector using the insulating branch wire clamp. The present invention has good waterproof and moisture-proof effects, and is particularly suitable for connecting cables laid underground and for applications with flooding and moisture. When using the present invention, the wire does not need to cut off the main line, the power connection contact area is large, the reliability is high, the volume is small, the installation is convenient, simple, and fast, and the construction difficulty and cost are greatly reduced. The branch wire clamp of the present invention can be used in combination of multiples to respectively connect the phase line, neutral line or ground line of a multi-core cable, thereby leading out multiple branch lines on the multi-core cable. The insulating shell can insulate each core cable and its connector from each other.

Description

Technical Field

[0001] The invention relates to a connecting device for a branch connection line, in particular to an insulating branch line clamp suitable for a multi-core insulated power cable and a branch line connector thereof. Background Art

[0002] During the laying, installation and maintenance of conductors, it is often necessary to connect branch lines from the main power cable. Existing technical solutions mainly use cable winding connections, parallel groove wire clamps, amp wire clamps, piercing wire clamps, etc.

[0003] Wrapping connection is a traditional wire connection scheme. After stripping a section of the insulation of the main line, the branch line conductor is wrapped around the main line conductor and wrapped with insulating tape to restore its insulation. Its advantages are convenience, flexibility, simplicity and economy; its disadvantages are that it is greatly affected by human factors, the connection reliability is poor, the contact point is easy to loosen, virtual connection and heat, the failure rate is high, and it is easy to cause electrical fire accidents.

[0004] Parallel groove wire clamps and AMP wire clamps are more suitable for connecting single-core bare conductor cables. In the branch connection of multi-core insulated cables, due to their large size, phase insulation is difficult to implement, and the installation tools of AMP wire clamps are not suitable for installation in the narrow operating space of multi-core cables. Therefore, these two types of wire clamps are rarely used in the branch connection of multi-core insulated cables.

[0005] The piercing wire clamp connection uses a metal tooth-like thin conductor to pierce the wire insulation layer to connect two mutually insulated wires to achieve cable branching. Its advantage is that it does not need to strip the wire insulation layer to connect two mutually insulated wire branches, and the operation is relatively simple; the disadvantage is that there are few piercing contact points with the wire, the effective contact cross-sectional area is small, the contact effect is invisible, and the contact point position cannot be controlled. Due to the different sizes of the main cable and the branch cable, the force is unbalanced, the contact pressure is unstable, and it is easy to cause problems such as contact point virtual connection, heating, discharge and fire, and the failure rate is very high. Summary of the invention

[0006] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide an insulated branch line clamp and a branch line connector thereof, which have a firm connection, a large conductor current carrying capacity, good conductivity, a compact structure, economy, convenient and quick installation and operation, can connect wires of various diameters (large span), and do not need to cut off the main line.

[0007] To achieve the above-mentioned purpose, the present invention provides an insulated branch wire clamp, comprising an insulating shell made of insulating material and a metal wire clamp made of conductive material, wherein the metal wire clamp is used to connect branch line cells and branch cells for conductivity, and the insulating shell is arranged outside the metal wire clamp.

[0008] Preferably, the metal wire clamp comprises a wire clamp body, the wire clamp body is provided with a branch wiring hole, a wire pressing groove, a first pressing hole, and a second pressing hole, the second pressing hole is connected to the wire pressing groove, and the first pressing hole is connected to the branch wiring hole;

[0009] The main conductive branch line battery cell passes through the wire pressing groove and the first screw passes through the second pressing hole and is pressed against the branch line battery cell;

[0010] The branch battery core is inserted into the branch wiring hole, and the second screw passes through the first pressing hole and is pressed against the branch battery core for electrical conduction.

[0011] Preferably, an insulating shell is provided on the insulating shell, and a first mounting hole, a second mounting hole, an insulating shell inner cavity, and a wiring through hole are provided on the insulating shell. The wiring through hole is connected to the branch wiring hole, and the branch battery cell is inserted into the branch wiring hole after passing through the wiring through hole; the insulating shell inner cavity is assembled and fixed with the metal wire clamp to fix the metal wire clamp.

[0012] Preferably, the metal wire clamp is also provided with a positioning groove and a wire clamp opening;

[0013] The insulating housing is provided with an introduction port at a position corresponding to the opening of the wire clamp, and the insulating housing is also provided with a positioning rib assembled with the positioning groove;

[0014] A limiting step is provided inside the inner cavity of the insulating shell, and the limiting step cooperates with one end surface of the metal wire clamp.

[0015] Preferably, a guide groove is provided inside the inner cavity of the insulating shell, and limiting convex plates are provided at both ends of the inner cavity of the insulating shell. The metal wire clamp is installed in the inner cavity of the insulating shell between the two limiting convex plates, and the bottom is assembled with the guide groove.

[0016] A branch line connector is provided, using the above-mentioned insulating branch line clamp.

[0017] Preferably, it further comprises a protective cover, wherein the protective cover is composed of a first protective cover and a second protective cover;

[0018] A bus clamp is installed in the protective cover, and the bus clamp is used to connect the branch wire and the main wire for conduction;

[0019] Branch wires and main wires are provided with branch wire cells and branch wire cells respectively, and the branch wire cells and branch wire cells are connected and conductive via a bus clamp; the bus clamp includes at least one branch wire clamp.

[0020] Preferably, the second protective cover is provided with a dosing half hole, and the dosing half hole of the first protective cover and the dosing half hole of the second protective cover together constitute the dosing hole.

[0021] Preferably, sealed ends are provided at both ends of the second protective cover. The sealed end of the first protective cover and the sealed end of the second protective cover are respectively sealed and assembled with the outer wall of the branch conductor and the main conductor through sealing members.

[0022] Preferably, the protective cover is also filled with a sealant, and the sealant is made of an insulating, waterproof and corrosion-resistant resin material.

[0023] The beneficial effects of the present invention are:

[0024] The present invention has good waterproof and moisture-proof effects, and is particularly suitable for connection of underground cables and applications in places with water flooding and moisture. When using the present invention, the conductor does not need to cut off the main line, the power connection contact area is large, the reliability is high, the volume is small, the installation is convenient, simple and fast, and the construction difficulty and cost are greatly reduced.

[0025] The branch line clamp of the present invention can be used in combination to connect the phase line, neutral line or ground line of the multi-core cable respectively, so as to lead out multiple branch lines on the multi-core cable. The insulating shell can insulate each core cable (wire core 201) and its connector from each other. The insulating sealing device is used on the outside of the multi-branch connection, so that the entire branch line connector can achieve a good sealing and waterproof effect, especially in the case of buried connection, flooding and moisture, the combined application has high reliability.

[0026] The branch wire clamp of the present invention has a metal contact surface dozens of times larger than that of the piercing wire clamp type branch wire clamp, and has reliable electrical contact. It does not need to cut off the main cable line, will not affect the electrical performance of the main line, and can simply, conveniently and reliably lead out the branch line. It is small in size and can be quickly installed, greatly reducing the difficulty and cost of construction.

[0027] The external insulating shell of the present invention can complete the connection of one or more groups of wires in the combined application of branch line connectors and branch line connectors. Because of its small size and mutual insulation, it is convenient to use multiple combinations. It is particularly suitable for branch connections of multi-core insulated cables. It is used in conjunction with an insulating sealing device with good waterproof and insulating properties (such as: glue-filled waterproof sealing cover, insulating outer protective cover, etc.), which is an excellent solution to the branch connection of multi-core insulated cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the first structure of the branch wire clamp (insulated branch wire clamp).

[0029] Figure 2 This is a schematic diagram of the first structure of the branch line clamp.

[0030] Figure 3 This is the first structural diagram of the branch wire clamp.

[0031] Figure 4 This is a schematic diagram of the first structure of the branch line clamp.

[0032] Figure 5 yes Figure 4 Middle AA section view.

[0033] Figure 6 It is a schematic diagram of the metal wire clamp structure of the first structure of the branch wire clamp.

[0034] Figure 7 It is the first type of branch wire clamp. Figure 4 Middle AA section view.

[0035] Figure 8 It is a schematic diagram of the insulating shell structure of the first structure of the branch line clamp.

[0036] Fig. 9 The insulating shell of the first structure of branch line clamp is Figure 4 Middle AA section view.

[0037] Fig.10 This is a schematic diagram of the second structure of the branch line clamp.

[0038] Fig.11 This is a schematic diagram of the second structure of the branch line clamp.

[0039] Fig.12 This is a schematic diagram of the second structure of the branch line clamp.

[0040] Fig.13 This is a schematic diagram of the third structure of the branch line clamp.

[0041] Fig.14 It is a structural schematic diagram of an insulated sealed branch line connector.

[0042] Fig.15 It is a structural schematic diagram of an insulated sealed branch line connector. DETAILED DESCRIPTION

[0043] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0044] See also Figure 14-15 The insulating sealed branch line connector of this embodiment includes a protective cover, wherein the protective cover is composed of a first protective cover 710 and a second protective cover 720, and the first protective cover 710 and the second protective cover 720 have the same structure;

[0045] A bus clamp 10 is installed in the protective cover, and the bus clamp 10 is used to connect the branch conductor 6 and the main conductor 2 for electrical conduction;

[0046] The second protective cover 720 is provided with a half-hole 722 and sealing ends 721 at both ends. The half-hole of the first protective cover and the half-hole of the second protective cover together constitute a feeding hole; the sealant is fed through the feeding hole.

[0047] The sealed end of the first protective cover and the sealed end of the second protective cover are respectively sealed with the outer wall of the branch conductor 6 and the main conductor 2 through the seal 40, so that the inside of the protective cover is in a sealed state (the injection hole is sealed through other structures), so that the protective cover has a waterproof function.

[0048] The sealing member 40 is made of elastic soft material and can be an existing sealing ring or rubber ring.

[0049] The main conductor 2 is provided with a plurality of branch lines 202, the outside of the plurality of branch lines 202 is insulated by a main insulating layer 203, and the branch lines 202 are provided with branch line cells 201, which are used for conducting electricity;

[0050] The branch conductor 6 has a branch insulating layer 602 on the outside and a branch battery cell 601 on the inside. The branch battery cell 601 is used for conducting electricity.

[0051] The branch cell 201 and the branch cell 601 are connected and electrically conductive via the bus clip 10 .

[0052] The protective cover is also filled with a sealant 50, which is made of an insulating, waterproof, and corrosion-resistant resin material. This design can increase the waterproof effect of the protective cover, and once water enters, it can first be absorbed by the sealant.

[0053] The bus clamp 10 includes at least one branch clamp.

[0054] See also Figure 1-Figure 9 The structure shown is a schematic diagram of the first structure of the branch wire clamp, including an insulating shell 5 made of insulating material and a metal wire clamp 1 made of conductive material. The metal wire clamp 1 is used to connect the branch line battery 201 and the branch battery 601 for conductivity. The insulating shell 5 is arranged outside the metal wire clamp 1, which fixes the metal wire clamp on the one hand and insulates the outer wall of the metal wire clamp on the other hand.

[0055] The metal wire clamp 1 comprises a wire clamp body 105, on which a branch wiring hole 104, a wire pressing groove 106, a first pressing hole 1021, and a second pressing hole 1022 are provided, wherein the second pressing hole 1022 is connected to the wire pressing groove 106, and the first pressing hole 1021 is connected to the branch wiring hole 104;

[0056] The branch cell 201 of the main conductor 2 passes through the wire pressing groove 106 and the first screw 3 passes through the second pressing hole 1022 and is pressed against the branch cell 201, so that the branch cell 201 is connected to the metal wire clamp 1 for electrical conduction;

[0057] The branch cell 601 is inserted into the branch wiring hole 104, and the second screw 4 passes through the first pressing hole 1021 and is pressed and electrically connected with the branch cell 601. This makes the branch cell 201 and the branch cell 601 electrically connected through the metal wire clamp.

[0058] The metal wire clamp 1 is also provided with a positioning groove 101 and a wire clamp opening 103 . The wire clamp opening 103 is mainly used to facilitate the insertion of the branch line battery cell 201 into the wire pressing groove 106 .

[0059] The insulating shell 5 is provided with an insulating shell 502, and the insulating shell 502 is provided with a first mounting hole 5031, a second mounting hole 5032, an insulating shell inner cavity 504, and a wiring through hole 501. The wiring through hole 501 is connected with the branch wiring hole 104, and the branch battery cell 601 passes through the wiring through hole 501 and is installed in the branch wiring hole 104;

[0060] The inner cavity 504 of the insulating shell is assembled and fixed with the metal wire clamp 1 to fix the metal wire clamp 1.

[0061] Furthermore, an inlet 505 is provided at a position corresponding to the insulating housing 502 and the wire clamp opening 103 , and the inlet 505 is also used to facilitate the branch line battery cell 201 to pass through and be assembled with the wire crimping groove 106 .

[0062] The insulating housing 502 is also provided with a positioning rib 506 assembled with the positioning groove 101. During installation, the positioning rib 506 assembled with the positioning groove 101 is assembled with the positioning groove 101 to position the metal wire clamp 1 in one direction.

[0063] A limiting step 507 is provided inside the inner cavity 504 of the insulating shell, and the limiting step 507 cooperates with one end surface of the metal wire clamp 1, so as to position the metal wire clamp from another direction. Through positioning in two directions, the first mounting hole 5031 and the second mounting hole 5032 can be connected with the first clamping hole 1021 and the second clamping hole 1022 respectively, so that the first screw 3 and the second screw 4 can be respectively passed through the first mounting hole 5031 and the second mounting hole 5032 and assembled and fixed with the first clamping hole 1021 and the second clamping hole 1022. Preferably, the first screw 3 and the second screw 4 are respectively assembled with the first clamping hole 1021 and the second clamping hole 1022 by screw thread engagement.

[0064] Furthermore, the ends of the first screw 3 and the second screw 4 are inserted into the first mounting hole 5031 and the second mounting hole 5032, so that the insulating shell and the metal wire clamp can be prevented from rotating in the circumferential direction, that is, the metal wire clamp is positioned from the third direction. Thus, the three-axis positioning of the metal wire clamp is achieved, the metal wire clamp 1 can be effectively fixed, and the metal wire clamp 1 can be accurately positioned when installed.

[0065] See also Figure 10-12 The structure shown is a schematic diagram of the second structure of the branch line clamp. Figure 1-Figure 9 The difference between the first structure is:

[0066] The insulating shell 5 is not provided with a limiting step 507 or a positioning rib 506 , and the metal wire clamp 1 is not provided with a positioning groove 101 .

[0067] The inner side of the insulating shell cavity 504 is provided with a guide groove 52, and the insulating shell 502 is provided with limiting convex plates 51 at both ends of the insulating shell cavity 504. The metal wire clamp 1 is installed in the insulating shell cavity 504 between the two limiting convex plates 51, and the bottom is assembled with the guide groove 52. This design positions the metal wire clamp 1 in two axial directions through the guide groove 52 and the limiting convex plate 51, and its structure is simpler and the installation is more convenient. The metal wire clamp 1 can be fixed by interference fit with the insulating shell cavity 504.

[0068] See also Fig.13 The structure shown is a schematic diagram of the third structure of the branch wire clamp. The difference between the first structure and the second structure is that multiple branch wire clamps are combined into a bus clamp 10, and each branch wire clamp is connected to a branch wire 202 and a branch wire 6 for electrical conduction. In this way, multiple branch wires 202 can be connected to the corresponding branch wires 6 for electrical conduction, which can greatly simplify the wiring procedure and make the wiring more standardized.

[0069] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

[0070] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. An insulated branch line clamp, characterized by: include, An insulating shell made of insulating material and a metal wire clamp made of conductive material, the metal wire clamp is used to connect the branch cell and the branch cell for electrical conduction, and the insulating shell is arranged outside the metal wire clamp; The metal wire clamp comprises a wire clamp body, on which a branch wiring hole, a wire pressing groove, a first pressing hole and a second pressing hole are arranged, the second pressing hole is connected to the wire pressing groove, and the first pressing hole is connected to the branch wiring hole; The main conductive branch line battery cell passes through the wire pressing groove and the first screw passes through the second pressing hole and is pressed against the branch line battery cell; The branch cell is inserted into the branch wiring hole, and the second screw passes through the first pressing hole and is pressed against the branch cell to conduct electricity; The insulating shell is provided with an insulating shell, and the insulating shell is provided with a first mounting hole, a second mounting hole, an inner cavity of the insulating shell, and a wiring through hole, the wiring through hole is connected with the branch wiring hole, and the branch battery core is inserted into the branch wiring hole after passing through the wiring through hole; the inner cavity of the insulating shell is assembled and fixed with the metal wire clamp to fix the metal wire clamp; The metal wire clamp is also provided with a positioning groove and a wire clamp opening; The insulating housing is provided with an introduction port at a position corresponding to the opening of the wire clamp, and the insulating housing is also provided with a positioning rib assembled with the positioning groove; A limiting step is provided inside the inner cavity of the insulating shell, and the limiting step cooperates with one end surface of the metal wire clamp; The inner side of the insulating shell cavity is provided with a guide groove, and the insulating shell is provided with limiting convex plates at both ends of the insulating shell cavity. The metal wire clamp is installed in the insulating shell cavity between the two limiting convex plates, and the bottom is assembled with the guide groove.

2. A branch line connector, characterized in that: The insulating branch wire clamp according to claim 1 is used.

3. The branch line connector according to claim 2, characterized in that: Also includes, A protective cover, wherein the protective cover is composed of a first protective cover and a second protective cover; A bus clamp is installed in the protective cover, and the bus clamp is used to connect the branch wire and the main wire for conduction; Branch wires and main wires are provided with branch wire cells and branch wire cells respectively, and the branch wire cells and branch wire cells are connected and conductive via a bus clamp; the bus clamp includes at least one branch wire clamp.

4. The branch line connector according to claim 3, characterized in that: The second protective cover is provided with a dosing half hole, and the dosing half hole of the first protective cover and the dosing half hole of the second protective cover together constitute the dosing hole.

5. The branch line connector according to claim 3, characterized in that: The second protective cover has sealed ends at both ends. The sealed end of the first protective cover and the sealed end of the second protective cover are respectively sealed and assembled with the branch conductor and the outer wall of the main conductor through sealing members.

6. The branch line connector according to any one of claims 3 to 5, characterized in that: The protective cover is also filled with a sealant, which is made of insulating, waterproof and corrosion-resistant resin materials.

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