Clamping type wiring terminal structure

Abstract

The utility model relates to the technical field of wiring terminals, in particular to a clamping type wiring terminal structure which comprises a base and a pressing block, two limiting blocks are fixedly installed above the base and located in the middle positions of the two ends of the base, the pressing block is installed between the two limiting blocks in a sliding mode, and the pressing block is located between the two limiting blocks and located in the middle positions of the two ends of the base. The threading hole of the pressing block and the groove of the limiting block adopt a spatial staggered layout design, and natural cross guidance is formed through a hole-groove dislocation structure, so that self-locking cross wiring of the cable is realized; and the arc-shaped groove is naturally attached to the outer contour of the cable to form a guide-in channel in smooth transition, and the cable can automatically slide into a preset position without accurate alignment when penetrating, so that the threading difficulty caused by friction clamping stagnation is remarkably reduced.

Description

Technical Field

[0001] This utility model relates to the field of terminal block technology, and specifically to a clamping terminal block structure. Background Technology

[0002] Existing terminal blocks generally suffer from defects such as easy cable loosening, cumbersome installation, poor compatibility, and weak vibration resistance. Specifically, traditional crimping relies on manual alignment and lacks self-locking guidance, resulting in uneven force and easy damage to the insulation layer; single-point locking structure cannot adapt to changes in wire diameter, and forced separation during maintenance often damages the cable; insufficient thread anti-loosening leads to frequent failures under vibration.

[0003] In the fastening of multi-strand stranded conductors, strand dispersion is a common technological challenge. To address this loose strand structure, some workers resort to unconventional bending techniques for forced straightening. Such improper operations not only reduce assembly efficiency but also lead to hidden defects within the conductor. Actual measurements show that the resulting abnormal contact resistance can raise the connection point temperature by 60-120°C compared to standard procedures, causing a significant increase in line loss and localized overheating. This severe temperature rise poses a substantial risk of electrical fires.

[0004] In view of the above, in order to overcome the above technical problems, this utility model designs a clamping terminal structure, which solves the above technical problems. Utility Model Content

[0005] The technical objective of this invention is to create a natural cross-guided channel by interlacing the wire-passing holes of the clamping block and the grooves of the limiting block. After the cable is inserted, it automatically crosses, achieving self-locking fixation, effectively resisting external pulling force, and preventing the cable from loosening.

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

[0007] This utility model provides a clamping terminal structure, including a base and a clamping block. Two limiting blocks are fixedly installed on the top of the base, and the two limiting blocks are located at the middle positions of the two ends of the base. A clamping block is slidably installed between the two limiting blocks. The wire through hole of the clamping block and the groove of the limiting block adopt a spatial staggered layout design. The hole and groove staggered structure forms a natural cross guide, realizing self-locking cross wiring of cables.

[0008] Preferably, the base has a limiting groove for restricting the sliding of the clamping block, and the limiting groove is located between two limiting blocks. The cross-sectional shape of the limiting groove is rectangular, and a sliding groove is connected to the center of the limiting groove.

[0009] Preferably, a groove is provided above the limiting block, and the cross-sectional shape of the groove above the limiting block is arc-shaped.

[0010] Preferably, the clamping block has a wire hole in the middle and arc-shaped grooves at both ends below the clamping block, and the limiting block can slide within the arc-shaped grooves of the clamping block.

[0011] Preferably, a screw is fixedly installed at the center position below the clamping block, and the screw slides in the sliding groove. A washer is installed on the screw, a washer is installed below the washer, and a nut is installed below the washer.

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

[0013] 1. The interlaced arrangement of the wire-passing holes of the clamping block and the groove space of the limiting block forms a natural cross-guide channel. After the cable is inserted, it automatically crosses, achieving self-locking fixation, effectively resisting external pulling force and preventing the cable from loosening.

[0014] 2. The arc-shaped groove naturally fits the outer contour of the cable, forming a smooth transition channel. When the cable is inserted, it can automatically slide into the predetermined position without precise alignment, significantly reducing the difficulty of threading caused by friction and jamming.

[0015] 3. The cable threading hole is set in the center to form a core channel for cable intersection. With the path constraint of the arc grooves at both ends, the two cables are forced to cross at a preset angle. The cross tension enhances the self-locking effect and prevents the cable from slipping due to external pulling.

[0016] 4. When the nut is tightened under overload, the elastic washer will undergo plastic deformation first, triggering a sudden change in tactile resistance and forming a torque warning. This mechanism can prevent the clamping block from damaging the limit groove structure due to overtravel and also prevent the cable from being damaged due to excessive compression. Attached Figure Description

[0017] 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.

[0018] 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:

[0019] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0020] Figure 2 This is a schematic diagram of the base of this utility model;

[0021] Figure 3This is an overall top view of the present invention;

[0022] Figure 4 This is a schematic diagram of the clamping block of this utility model.

[0023] In the diagram: 1. Base; 11. Limiting block; 12. Limiting groove; 13. Sliding groove; 2. Clamping block; 21. Wire hole; 22. Arc groove; 23. Screw; 24. Washer; 25. Washer ring; 26. Nut. Detailed Implementation

[0024] 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.

[0025] like Figure 1 , 2 As shown in Figures 3 and 4, the present invention provides a clamping terminal structure, including a base 1 and a clamping block 2. Two limiting blocks 11 are fixedly installed on the top of the base 1, and the two limiting blocks 11 are located at the middle positions of the two ends of the base 1. The clamping block 2 is slidably installed between the two limiting blocks 11. The wire hole 21 of the clamping block 2 and the groove of the limiting block 11 are designed with a spatial staggered layout. The hole and groove staggered structure forms a natural cross guide, realizing the self-locking cross wiring of the cable.

[0026] The interlaced arrangement of the wire-passing holes 21 in the clamping block 2 and the grooves in the limiting block 11 forms a natural cross-guide channel. After the cable is inserted, it automatically crosses, achieving self-locking fixation and effectively resisting external pulling forces to prevent cable loosening. When the screw 23 pulls down the clamping block 2, the cross-wired cables and the misaligned hole-groove structure form a two-way mechanical interlock. Combined with the self-locking characteristics of the thread, it maintains a tight state even under vibration, ensuring long-term connection reliability. The limiting blocks 11 are symmetrically distributed at the middle positions of both ends of the base 1. After the cable is inserted from both sides, it is subjected to symmetrical compression and constraint, ensuring uniform distribution of clamping force, preventing unilateral bending or insulation wear, and extending the cable's service life.

[0027] like Figure 1 and 2 As shown, the base 1 has a limiting groove 12 for restricting the sliding of the clamping block 2, and the limiting groove 12 is located between two limiting blocks 11. The cross-sectional shape of the limiting groove 12 is rectangular, and a sliding groove 13 is connected to the center of the limiting groove 12.

[0028] The rectangular cross-section of the limiting groove 12 is strictly matched with the shape of the clamping block 2 to form a rigid sliding track, which forces the clamping block 2 to move linearly along a single axis, completely eliminating the risk of offset or rotation, ensuring that the clamping force direction is always perpendicular to the cable axis, and avoiding clamping failure due to angular deviation.

[0029] like Figure 1 , 2 As shown in Figure 3, a groove is provided above the limiting block 11, and the cross-sectional shape of the groove above the limiting block 11 is arc-shaped.

[0030] The arc-shaped groove naturally conforms to the outer contour of the cable, forming a smooth transition guide channel. When the cable is inserted, it can automatically slide into the predetermined position without precise alignment, significantly reducing the difficulty of threading caused by friction and jamming. The arc-shaped groove has a self-centering effect. When the cable is squeezed, it automatically slides along the arc surface to the lowest point of the groove, ensuring that the cable axis is always aligned with the geometric center of the limiting block 11.

[0031] like Figure 1 , 3 As shown in Figure 4, the clamping block 2 has a wire hole 21 in the middle, and arc grooves 22 are provided at both ends below the clamping block 2. The limiting block 11 can slide in the arc grooves 22 provided in the clamping block 2.

[0032] The centrally located wire hole 21 forms the core channel for cable intersection. Combined with the path constraints of the arc-shaped grooves 22 at both ends, it forces the two cables to cross at a preset angle. The cross tension enhances the self-locking effect, preventing cable slippage caused by external pulling. The arc-shaped groove 22 below the clamping block 2 and the groove of the limiting block 11 form a curved sliding pair. During the clamping process, the cable compression stress is evenly diffused along the arc-shaped contact surface, avoiding stress concentration caused by right-angle structures and protecting the integrity of the cable insulation layer.

[0033] like Figure 3 and 4 As shown, a screw 23 is fixedly installed at the center of the lower part of the clamping block 2, and the screw 23 slides in the sliding groove 13. A washer 24 is installed on the screw 23, a washer 25 is installed below the washer 24, and a nut 26 is installed below the washer 25.

[0034] The high-frequency micro-amplitude vibration energy absorbed by the washer effectively suppresses the resonance of the thread pair; when the nut 26 is overloaded and tightened, the elastic washer 25 will undergo plastic deformation first, triggering a sudden change in tactile resistance to form a torque warning. This mechanism can prevent the clamping block 2 from damaging the limit groove 12 structure due to overtravel sliding, and also avoid damage to the cable due to excessive compression.

[0035] In operation, the operator first inserts the screw 23 through the sliding groove 13, and then inserts two cables from both ends of the limiting block 11. After entering the limiting block 11, the cables continue to pass through the wire holes 21 on the clamping block 2. When the two cables cross, the screw 23 is pulled downwards until it can no longer move, and then the nut 26 on the screw 23 is tightened until it is completely secure.

[0036] When it is necessary to separate the cables, the operator loosens the nut 26 in the opposite direction, causing the clamping block 2 to move upward. At this time, the clamping block 2 and the limiting block 11 release their clamping constraint on the cables, and the operator can then separate the cables on both sides.

[0037] Although one or more exemplary embodiments of this disclosure have been described with reference to the accompanying drawings, those skilled in the art will understand that various changes in form and detail may be made therein without departing from the spirit and scope of this disclosure as defined by the appended claims.

Claims

1. A clamping terminal block structure, characterized in that, Includes a base (1) and a clamping block (2). Two limiting blocks (11) are fixedly installed on the top of the base (1), and the two limiting blocks (11) are located at the middle of the two ends of the base (1). The clamping block (2) is slidably installed between the two limiting blocks (11). The wire hole (21) of the clamping block (2) and the groove of the limiting block (11) are designed with a spatial staggered layout. The wire hole (21) of the clamping block (2) and the groove of the limiting block (11) form a natural cross guide through the staggered structure of the groove of the limiting block (11).

2. The clamping terminal block structure according to claim 1, characterized in that: The base (1) is provided with a limiting groove (12) for limiting the sliding of the pressing block (2), and the limiting groove (12) is located between two limiting blocks (11). The cross-sectional shape of the limiting groove (12) is rectangular, and a sliding groove (13) is connected to the center of the limiting groove (12).

3. The clamping terminal structure according to claim 2, characterized in that: The upper part of the limiting block (11) is provided with a groove, and the cross-sectional shape of the groove above the limiting block (11) is arc-shaped.

4. The clamping terminal structure according to claim 3, characterized in that: The clamping block (2) has a wire hole (21) in the middle and an arc groove (22) at both ends of the clamping block (2). The limiting block (11) can slide in the arc groove (22) of the clamping block (2).

5. The clamping terminal structure according to claim 4, characterized in that: A screw (23) is fixedly installed at the center of the lower part of the clamping block (2), and the screw (23) slides in the sliding groove (13). A washer (24) is installed on the screw (23), a washer (25) is installed below the washer (24), and a nut (26) is installed below the washer (25).

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