A crimping type terminal structure for a multi-strand wire harness

Abstract

The utility model relates to wire terminal technical field, concretely relates to a kind of crimping type wire terminal structure for multi-strand wire harness, including base, slider and extruding block, sliding groove and limit groove are opened in array on the base, the sliding groove is located the side of base, the sliding groove is connected with the limit groove above, slider is slidably installed in the sliding groove, extruding block is slidably installed in the limit groove, the threading groove of slider and the threading hole of extruding block adopt space staggered type layout, realize natural cross orientation by the staggered structure of threading groove and threading hole, under the conduction effect of gasket, nut drives extruding block to move upwards, when extruding block rises to apex and cannot continue to go up, reliable clamping to cable can be realized.

Description

Technical Field

[0001] This utility model relates to the field of terminal block technology, specifically to a crimp-type terminal block structure for multi-strand wire harnesses. Background Technology

[0002] Regarding cable fixing reliability, traditional crimping processes require manual alignment and lack self-locking guide design, easily leading to uneven stress distribution and the risk of insulation layer rupture. In terms of structural adaptability, single-point locking mechanisms struggle to accommodate variations in wire diameter, and forced separation during maintenance can easily cause physical damage to the conductor. Regarding mechanical stability, existing threaded fastening solutions lack sufficient resistance to micro-vibrations, resulting in a significant reduction in connection reliability under dynamic operating conditions. These technical deficiencies collectively restrict the long-term stability and ease of maintenance of electrical connections.

[0003] In the tightening of multi-strand stranded conductors, strand dispersion (fragmentation) has long been a technical bottleneck in electrical connection processes. The causes of this problem mainly involve the non-uniform stress distribution of the stranded wire structure under external force, insufficient shear fatigue strength of the conductor material, and the lack of a constraint mechanism for multi-strand cores in traditional crimping processes. It is worth noting that some construction workers, when faced with defects such as loose strand ends and strand forking, violate the requirements of cable crimping specifications such as IEC 60352-2, using non-standard bending operations to forcibly correct the wire bundle shape. While this crude operation may temporarily achieve core convergence, it leads to hidden damage such as conductor lattice structure distortion and reduced effective cross-sectional area, resulting in a surge in contact resistance, decreased current carrying capacity, and even the formation of micro-crack propagation paths under cable vibration conditions, ultimately causing safety hazards such as localized overheating or arc discharge.

[0004] In view of the above, in order to overcome the above technical problems, this utility model designs a crimp-type terminal structure for multi-strand wire harnesses, which solves the above technical problems. Utility Model Content

[0005] The technical objective of this invention is to provide a multi-strand wire harness crimping terminal structure where, under the transmission action of the gasket, the nut drives the pressing block to move upward. When the pressing block reaches its highest point and can no longer move upward, the crossed wire harnesses clamp each other, thus achieving reliable clamping of the cable.

[0006] To achieve the above-mentioned technical objectives, this utility model provides the following technical solution:

[0007] This utility model provides a crimped terminal structure for multi-strand wire harnesses, including a base, a slider, and a pressing block. The base has an array of sliding grooves and limiting grooves. The sliding grooves are located on the side of the base, and the limiting grooves are connected above the sliding grooves. The slider is slidably installed inside the sliding grooves, and the pressing block is slidably installed inside the limiting grooves. The wire-passing grooves of the sliders and the wire-passing holes of the pressing blocks are arranged in a spatially staggered layout, and natural cross guidance is achieved through the staggered structure of the wire-passing grooves and wire-passing holes.

[0008] Preferably, the cross-sectional shape of the slider is the same as the cross-sectional shape of the sliding groove, a wire-passing groove is provided at the center of the side of the slider, a rectangular groove is provided inside the slider, and the wire-passing hole is connected to the rectangular groove, and a sliding groove is connected above the rectangular groove.

[0009] Preferably, the extrusion block has a rectangular cross-sectional shape, and a threading hole is provided in the center of the extrusion block. The size of the threading hole is the same as the size of the threading groove.

[0010] Preferably, a screw is fixedly installed directly above the extrusion block, a washer is installed on the screw, and a nut is installed on the screw, with the nut located above the screw.

[0011] Preferably, the bottom surface of the extrusion block has the same size and shape as the limiting groove and the sliding groove.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. Zero-gap assembly is achieved through the equal cross-section matching design of the slider and the sliding groove. Combined with the vertical through-slot structure of the wire groove-rectangular groove-sliding groove, a dual-channel precise guide is formed to ensure smooth embedding of components.

[0014] 2. Under the transmission action of the gasket, the nut drives the compression block to move upward. When the compression block rises to the top and can no longer move upward, the crossed wire harnesses are clamped together, thus achieving reliable clamping of the cable.

[0015] 3. When the nut is screwed in, the surface pressure is transmitted through the washer, so that the clamping force is evenly distributed. Rotating the nut can drive the compression block to move upward, thereby clamping the cable. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] The above and other aspects of the present invention will now be described by way of example only, with reference to the accompanying drawings, in which:

[0018] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0019] Figure 2 This is a schematic diagram of the base of this utility model;

[0020] Figure 3 This is a schematic diagram of the slider of this utility model;

[0021] Figure 4 This is a schematic diagram of the extrusion block of this utility model.

[0022] In the diagram: 1. Base; 11. Sliding groove; 12. Limiting groove; 2. Slider; 21. Wire threading groove; 22. Rectangular groove; 23. Sliding groove; 3. Extrusion block; 31. Wire threading hole; 32. Screw; 33. Washer; 34. Nut. Detailed Implementation

[0023] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0024] like Figure 1 , 2 As shown in Figures 3 and 4, the present invention provides a crimped terminal structure for multi-strand wire harnesses, comprising a base 1, a slider 2, and a pressing block 3. The base 1 has an array of sliding grooves 11 and limiting grooves 12. The sliding grooves 11 are located on the side of the base 1, and the limiting grooves 12 are connected above the sliding grooves 11. The slider 2 is slidably installed inside the sliding grooves 11, and the pressing block 3 is slidably installed inside the limiting grooves 12. The wire-passing grooves 21 of the slider 2 and the wire-passing holes 31 of the pressing block 3 are arranged in a spatially staggered manner, and natural cross guidance is achieved through the staggered structure of the wire-passing grooves 21 and the wire-passing holes 31.

[0025] After the extrusion block 3 is fully inserted into the limiting groove 12, it continues to be pushed along the sliding groove 23 on the surface of the slider 2 into the rectangular groove 22. After the above assembly is completed, the operator inserts the cable from the wire threading groove 21 into the wire threading hole 31, and then tightens the nut 34. Under the transmission action of the washer 33, the nut 34 drives the extrusion block 3 to move upward. When the extrusion block 3 rises to the top and can no longer move upward, the crossed wire harnesses are clamped together, thus achieving reliable clamping of the cable; and the extrusion block 3 in the limiting groove 12 keeps the wire harness tight through the extrusion force.

[0026] like Figure 1 and 2As shown, the cross-sectional shape of the slider 2 is the same as that of the sliding groove 11. A wire-passing groove 21 is provided at the center of the side of the slider 2. A rectangular groove 22 is provided inside the slider 2, and the wire-passing hole 31 is connected to the rectangular groove 22. A sliding groove 23 is connected above the rectangular groove 22, so that the slider 2 and the extrusion block 3 can smoothly enter the base 1.

[0027] like Figure 1 and 3 As shown, the extrusion block 3 has a rectangular cross-sectional shape, and a wire hole 31 is provided in the center of the extrusion block 3. The size of the wire hole 31 is the same as the size of the wire groove 21, which allows the cable to be accurately aligned and inserted, effectively avoiding insertion difficulties caused by size deviation.

[0028] The coaxial design of the wire hole 31 and the wire groove 21 with equal diameter generates a self-correcting effect, eliminating the interference of multiple wire bundles and improving the success rate of cable insertion.

[0029] like Figure 1 and 4 As shown, a screw 32 is fixedly installed directly above the extrusion block 3, a washer 33 is installed on the screw 32, and a nut 34 is installed on the screw 32, with the nut 34 located above the screw 32.

[0030] When the nut 34 is screwed in, the surface pressure is transmitted through the washer 33, so that the clamping force is evenly distributed. Rotating the nut 34 can drive the pressing block 3 to move upward, thereby clamping the cable.

[0031] like Figure 1 , 2 As shown in Figures 3 and 4, the bottom surface of the extrusion block 3 is the same size and shape as the limiting groove 12 and the extrusion groove, so as to prevent the extrusion block 3 from shaking inside the limiting groove 12 and the sliding groove 23.

[0032] In operation, the operator first inserts the slider 2 into the sliding groove 11, and then pushes the pressing block 3 along the limiting groove 12 of the base 1. Once the pressing block 3 is fully inside the limiting groove 12, it is further pushed along the sliding groove 23 on the surface of the slider 2 into the rectangular groove 22. After assembly, the operator inserts the cable through the cable threading groove 21 into the cable threading hole 31, and then tightens the nut 34. Under the conductive action of the washer 33, the nut 34 drives the pressing block 3 upward. When the pressing block 3 reaches its maximum height and can no longer move upward, reliable clamping of the cable is achieved.

[0033] When it is necessary to release the cable, the operator loosens the nut 34 in the opposite direction. At this time, the pressing block 3 moves down along the slide groove 23. As the pressing block 3 moves down, its wire hole 31 gradually aligns with the wire groove 21 to restore the through diameter, thereby releasing the compression constraint on the cable, and the operator can then easily remove the cable.

[0034] The above description is merely illustrative of this disclosure, and modifications may be made to the present invention in light of the above detailed description. The terminology used in the appended claims should not be construed as limiting the present invention to the specific embodiments disclosed in the specification. Rather, the scope of the present invention will be fully defined by the appended claims, which will be interpreted according to established principles of claim interpretation.

Claims

1. A crimp-type terminal block structure for multi-strand wire harnesses, characterized in that, The device includes a base (1), a slider (2), and an extrusion block (3). The base (1) has an array of sliding grooves (11) and limiting grooves (12). The sliding grooves (11) are located on the side of the base (1). The upper part of the sliding grooves (11) is connected to the limiting grooves (12). The slider (2) is slidably installed inside the sliding grooves (11). The extrusion block (3) is slidably installed inside the limiting grooves (12). The threading groove (21) of the slider (2) and the threading hole (31) of the extrusion block (3) are arranged in a spatial staggered manner. The staggered structure of the threading grooves (21) and the threading holes (31) achieves natural cross guidance.

2. The crimp-type terminal block structure for multi-strand wire harnesses according to claim 1, characterized in that: The cross-sectional shape of the slider (2) is the same as that of the sliding groove (11). A wire groove (21) is provided at the center of the side of the slider (2). A rectangular groove (22) is provided inside the slider (2). The wire hole (31) is connected to the rectangular groove (22). A sliding groove (23) is connected above the rectangular groove (22).

3. The crimp-type terminal block structure for multi-strand wire harnesses according to claim 2, characterized in that: The extrusion block (3) has a rectangular cross-sectional shape, and a thread hole (31) is provided in the center of the extrusion block (3). The size of the thread hole (31) is the same as the size of the thread groove (21).

4. The crimp-type terminal block structure for multi-strand wire harnesses according to claim 3, characterized in that: A screw (32) is fixedly installed directly above the extrusion block (3), a washer (33) is installed on the screw (32), a nut (34) is installed on the screw (32), and the nut (34) is located above the screw (32).

5. The crimp-type terminal block structure for multi-strand wire harnesses according to claim 4, characterized in that: The bottom surface of the extrusion block (3) is the same size and shape as the limiting groove (12) and the sliding groove (23).

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