Wire clamp

Abstract

The utility model discloses a wire clamp, which comprises a main box body, a wire clamp shell and a wire clamp seat, an installation groove is arranged in the wire clamp shell, the wire clamp seat is arranged in the installation groove, two inner wire clamping through holes are arranged on the wire clamp seat, more than one slot I is arranged above each inner wire clamping through hole in parallel, and the slot II is arranged in the installation groove. An upper aluminum pressing column is inserted in each first inserting groove, more than one upper thorn piece is vertically arranged below each upper aluminum pressing column, an aluminum sliding block is connected below each inner wire clamping through hole in an up-down sliding mode, more than one second inserting groove is formed in the upper portion of each aluminum sliding block in parallel, and a lower aluminum pressing column is inserted in each second inserting groove. More than one lower stabbing piece is vertically arranged above each lower aluminum pressing column, the lower stabbing pieces and the upper stabbing pieces are symmetrically arranged, a torque screw rod is rotatably connected below each aluminum sliding block, and the screw rod part of the torque screw rod is in threaded connection with the bottom of the wire clamp seat. According to the structure, the cable clamping effect is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of power distribution equipment, specifically to a wire clamp. Background Technology

[0002] Cables are installed on utility poles or buildings using cable-fixing devices. The cable ends are typically secured by bending the cable end around an insulator (ceramic clamp) and then binding or fixing the separated cable ends together while under tension. Existing cables use cable clamps to secure the separated cable ends.

[0003] Existing wire clamps, such as the one disclosed in patent application number 201710947422.3, consist of a clamping spring and a support base. The support base has a support shaft, with an insertion port below the support shaft. The clamping spring is U-shaped and surrounds the support shaft, used to press down on the wire inserted into the insertion port. Pressing the top of the clamping spring causes it to rotate around the support shaft, while the bottom of the clamping spring presses down on the wire, clamping it between the bottom of the clamping spring and the support base. This invention utilizes the lever principle to generate a large downward pressure on the wire inserted into the insertion port, preventing it from loosening. When unwinding the cable, simply move the unwind lever to release the clamping spring and the fastening mechanism on the support base. The operation is simple and convenient. However, these types of clamps are generally made of iron. Considering that iron materials are not stable due to thermal expansion and contraction after long-term use, they are prone to loosening and cannot clamp the cable properly. Moreover, this type of clamp has insufficient clamping force when clamping the cable. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this utility model is to provide a wire clamp to solve the problems mentioned in the background art, such as the existing wire clamps being prone to loosening after long-term use and failing to clamp the cable, and the insufficient clamping force of this type of wire clamp when clamping the cable.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wire clamp, comprising a main housing, a wire clamp shell, and a wire clamp seat disposed within the wire clamp shell. The wire clamp shell has a mounting groove, and the wire clamp seat is placed within the mounting groove. The wire clamp seat has two longitudinally penetrating internal wire clamping holes. Above each internal wire clamping hole, one or more slots are arranged parallel to each other. An upper aluminum pressure post is inserted into each slot. Below each upper aluminum pressure post, one or more upper spikes are vertically arranged. [The text abruptly ends here, likely due to an incomplete sentence or missing information.] Below the aluminum slider, an aluminum material slider is slidably connected. Above the aluminum slider, one or more slots are arranged parallel to each other. A lower aluminum material pressure post is inserted into each slot. Above each lower aluminum material pressure post, one or more lower barbs are vertically arranged. The lower barbs are symmetrical to the upper barbs. Below each aluminum slider, a torque screw is rotatably connected. The screw part of the torque screw is threaded to the bottom of the wire clamp seat. The screw part of the torque screw is located on the outside of the bottom of the wire clamp housing, and the head of the torque screw is located on the outside of the bottom of the wire clamp housing.

[0006] Preferably, for ease of disassembly, the clamp housing includes an insulating outer shell and a side-flip cover fitted over the insulating outer shell. The clamp seat is placed inside the insulating outer shell, and the mounting groove is placed inside the insulating outer shell. The insulating outer shell has two transversely penetrating first through holes, which are located within the mounting groove. The insulating outer shell has two longitudinally arranged second through holes at its lower part, each of which communicates with one of the first through holes. A mounting notch is provided on the side of one of the first through holes. The side-flip cover is hinged to one side of the insulating outer shell via a hinge shaft and is used to close the mounting notch. A limiting protrusion is provided on the other side of the insulating outer shell. A limiting through groove is provided on the side-flip cover to engage with the limiting protrusion. The side-flip cover has two transversely penetrating lower U-shaped notches. The lower U-shaped notches cooperate with the upper part of the first through holes to form a wire groove for inserting cables. The inner clamping through hole is placed within the wire groove, and the torque screw passes through the second through hole.

[0007] Preferably, in order to facilitate assembly, a second mounting notch is provided on one side of one of the inner clamping wire through holes, which is aligned with the first mounting notch. An assembly notch is provided on both the front and back of the other side of the inner clamping wire through hole with the second mounting notch. A raised guide strip is provided above each assembly notch. An insertion groove is provided on the side of one of the aluminum sliders. Sliding guide grooves that cooperate with the guide strip are provided on both the front and back sides of the insertion groove.

[0008] Preferably, in order to reduce resistance, a layer of grease that can reduce resistance is coated inside the inner clamping wire through hole, and a silver plating layer is coated on the surface of the torque screw.

[0009] Preferably, to facilitate the positioning of the torque screw and the aluminum slider and to facilitate subsequent disassembly, a positioning groove is provided at the bottom of the aluminum slider, and a guide notch communicating with the positioning groove is provided on the side of the aluminum slider, with one end of the guide notch placed on the side of the aluminum slider. The head of the torque screw is provided with a lifting post, and a limiting post that can be inserted into the guide notch is provided below the lifting post. After the limiting post is inserted into the guide notch, it can be locked in the positioning groove. A retaining spring that is locked outside the lifting post is also inserted into the aluminum slider. The retaining spring includes two spaced-apart retaining strips, and the two retaining strips form a clamp for clamping the lifting post. The movement direction of the retaining spring is perpendicular to the movement direction of the torque screw on the guide notch.

[0010] Preferably, in order to compress the cable, the lower end of the upper barb and the upper end of the lower barb are both pointed structures.

[0011] Preferably, to improve the fixing effect, the upper barb is interference-fitted with slot one, and the lower barb is interference-fitted with slot two.

[0012] Preferably, in order to achieve external positioning of the cable, an upper semi-circular limiting ring is provided on the upper outer side of each of the two sides of the first through hole, and a lower semi-circular limiting ring is provided on the upper outer side of each of the two sides of the lower half U-shaped notch. Each upper semi-circular limiting ring and the lower semi-circular limiting ring cooperate to form a circular limiting ring for limiting the cable.

[0013] Preferably, in order to facilitate the sealing of the unused second through hole, a screw cap is screwed onto the outside of the second through hole, and two L-shaped positioning grooves are symmetrically arranged on the outer side of the second through hole. A positioning block that cooperates with the L-shaped positioning groove is provided on the inner side of the screw cap.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The distance between the lower and upper barbs is adjusted by rotating the exposed torque screw below, so that it can clamp cables of different diameters. Compared with existing wire clamps, this structure uses the method of upper and lower piercing to clamp the cable that has passed through, resulting in a stronger clamping force and less loosening.

[0016] 2. In this structure, since the aluminum slider is made of aluminum and the wire clamp is also made of aluminum alloy, the overall stability of thermal expansion and contraction is better. In addition, the installation notch is set on the side of the wire clamp, so that the deformation stress of the elastic aluminum alloy conforms to Hooke's law, which can rebound to compensate for the deformation of the wire clamp, allowing it to deform slowly, shortening the deformation time, and ultimately ensuring a more stable clamping effect on the cable. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the wire clamp housing when the two caps are separated from other components as disclosed in Example 1;

[0018] Figure 2 This is a schematic diagram of the structure of a wire clamp when the clamp base insulating shell, side flip cover and other components are separated, as disclosed in Embodiment 1;

[0019] Figure 3 This is a schematic diagram of the structure of the clamp insulating shell disclosed in Example 1;

[0020] Figure 4 This is a schematic diagram of the side-flip cover disclosed in Embodiment 1;

[0021] Figure 5 This is a schematic diagram of the structure of a wire clamp in Example 1 when the wire clamp housing is not installed;

[0022] Figure 6 for Figure 5 A schematic diagram of the centerline clamp when it is separated from other components;

[0023] Figure 7 This is a schematic diagram of the structure of the retaining spring separating from the aluminum slider when one of the aluminum sliders and the lower aluminum pressure column are combined, as disclosed in Example 1.

[0024] Figure 8 This is a schematic diagram of the structure of the aluminum slider, retaining ring, and torque screw during separation in Example 1.

[0025] Figure 9 This is a schematic diagram of the snap ring structure in Example 1;

[0026] Figure 10 This is a schematic diagram of the bottom structure of the aluminum slider in Example 1.

[0027] In the diagram: 1. Wire clamp housing; 101. Insulating outer shell of clamp seat; 102. Side flip cover; 103. First through hole; 104. Mounting notch one; 2. Wire clamp seat; 201. Inner clamping through hole; 3. Mounting groove; 4. Slot one; 5. Upper aluminum material pressure post; 6. Upper barb; 7. Aluminum material slider; 701. Insertion groove; 8. Slot two; 9. Lower aluminum material pressure post; 10. Lower barb; 11. Torque screw; 12. Limiting protrusion; 13. Limiting through groove; 14. Lower half U-shaped notch; 15. Mounting notch two; 16. Guide strip; 17. Insertion groove; 18. Sliding guide groove; 19. Assembly notch; 20. Positioning groove; 21. Guide notch; 22. Limiting post; 23. Lifting post; 24. Snap ring; 25. Clamping jaw; 26. Upper semi-circular limiting ring; 27. Lower semi-circular limiting ring; 28. Rotary cap; 29. ​​L-shaped positioning groove; 291. Positioning block; 292. Hinge shaft; 30. Detailed Implementation

[0028] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0029] Example 1:

[0030] See also Figure 1-10 This embodiment discloses a wire clamp, including a wire clamp housing 1 and a wire clamp base 2 disposed within the wire clamp housing 1. The wire clamp housing 1 has a mounting groove 3, and the wire clamp base 2 is placed within the mounting groove 3. The wire clamp base 2 has two longitudinally penetrating inner wire clamping holes 201. Above each inner wire clamping hole 201, one or more slots 4 are arranged parallel to each other. An upper aluminum pressure post 5 is inserted into each slot 4. Below each upper aluminum pressure post 5, one or more upper spikes 6 are vertically arranged. Below each inner wire clamping hole 201, an aluminum slider 7 is slidably connected vertically. Above each aluminum slider 7, one or more slots 8 are arranged parallel to each other. In each slot 8, a lower aluminum pressure post 9 is inserted. The upper… One or more lower barbs 10 are vertically arranged, and the lower barbs 10 are symmetrically arranged with the upper barbs 6. A torque screw 11 is rotatably connected below each aluminum slider 7. The screw part of the torque screw 11 is threadedly connected to the bottom of the wire clamp seat 2. The screw part of the torque screw 11 is located on the outside of the bottom of the wire clamp housing 1, and the head of the torque screw 11 is located on the outside of the bottom of the wire clamp housing 1. In this embodiment, a torque nut is provided below the torque screw 11 to control the rotational torque of the torque screw 11 and ensure that the torque of the torque screw 11 is not too large during rotation. If it is too large, the lower barbs 10 above may insert too deeply into the cable and easily puncture and damage the cable surface. If it is too small, the contact area between the lower barbs 10 and the cable may be too small to clamp the cable.

[0031] Preferably, for ease of disassembly, the wire clamp housing 1 includes an insulating outer shell 101 and a side-flip cover 102 fitted over the insulating outer shell 101. The wire clamp seat 2 is placed inside the insulating outer shell 101, and the mounting groove 3 is placed inside the insulating outer shell 101. The insulating outer shell 101 has two transversely penetrating first through holes 103 located within the mounting groove 3. Two longitudinally arranged second through holes 202 are located below the insulating outer shell 101, each communicating with one of the first through holes 103. A mounting notch 10 is provided on the side of one of the first through holes 103. 4. The side-flip cover 102 is hinged to one side of the insulating shell 101 via a hinge shaft 30 and is used to close the mounting notch 104. A limiting protrusion 12 is provided on the other side of the insulating shell 101. A limiting through groove 13 is provided on the side-flip cover 102 to engage with the limiting protrusion 12. Two transversely penetrating lower U-shaped notches 14 are provided on the side-flip cover 102. The lower U-shaped notches 14 cooperate with the upper part of the first through hole 103 to form a wire groove for inserting a cable. The inner clamping through hole 201 is placed in the wire groove, and the torque screw 11 penetrates the second through hole 202.

[0032] Preferably, to facilitate assembly, a second mounting notch 15 is provided on one side of one of the inner wire clamping through holes 201, aligned with the first mounting notch 104. An assembly notch 19 is provided on both the front and back sides of the other side of the inner wire clamping through hole 201 with the second mounting notch 15. A raised guide strip 16 is provided above each assembly notch 19. An insertion groove 17 is provided on the side of one of the aluminum sliders 7. Sliding guide grooves 18 that cooperate with the guide strip 16 are provided on both the front and back sides of the insertion groove 17. In this embodiment, by providing the assembly notch 19, the installation and assembly can be facilitated, and the contact area between the aluminum slider 7 and the inner wire clamping through hole 201 can be increased, thereby reducing the conductivity resistance.

[0033] Preferably, in order to reduce resistance, a layer of grease that can reduce resistance is coated inside the inner clamping wire through hole 201, and a silver plating layer is coated on the surface of the torque screw 11. The silver plating layer can reduce resistance. The grease is an electrical composite grease.

[0034] like Figure 7-10As shown, preferably, to facilitate the positioning of the torque screw 11 and the aluminum slider 7, and to facilitate subsequent disassembly, a positioning groove 20 is provided at the bottom of the aluminum slider 7, and a guide notch 21 communicating with the positioning groove 20 is provided on the side of the aluminum slider 7, with one end of the guide notch 21 placed on the side of the aluminum slider 7. A lifting post 23 is provided at the head of the torque screw 11, and a limiting post 22 capable of inserting into the guide notch 21 is provided below the lifting post 23. After the limiting post 22 is inserted into the guide notch 21, it can be locked into the positioning groove 20. A retaining spring 24, which is locked outside the lifting post 23, is also inserted into the aluminum slider 7. The retaining spring 24 includes two spaced-apart retaining strips 25, which form a clamping jaw 26 for clamping the lifting post 23. The moving direction of the retaining spring 24 is... Perpendicular to the direction of movement of the torque screw 11 on the guide notch 21, in this embodiment, the snap ring 24 is a U-shaped structure. A insertion groove 701 for inserting the snap ring 25 is provided on the side of the aluminum slider 7. During installation, the torque screw 11 is first inserted into the second through hole 202 and then screwed into the threaded hole on the wire clamp seat 2. The head inserted into the inner wire clamping through hole 201 is then inserted from the side of the guide notch 21 and moved into the positioning groove 20 and placed in the positioning groove 20. Then, the snap ring 25 on the snap ring 24 is inserted from the insertion groove 701. The clamp 26 is used to limit the entire torque screw 11 in the aluminum slider 7 so that it will not come out, but it can rotate. During operation, by rotating the torque screw 11, the corresponding aluminum slider 7 moves up and down in the inner wire clamping through hole 201 to clamp the wire inserted in the first through hole 103.

[0035] Preferably, in order to compress the cable, the lower end of the upper barb 6 and the upper end of the lower barb 10 are both pointed structures. In this embodiment, since the lower end of the upper barb 6 and the upper end of the lower barb 10 are both pointed, they can be directly inserted into the cable in the first through hole 103 to compress and fix the cable. Preferably, in order to improve the fixing effect, the upper barb 6 is interference-fitted with the slot 1 4, and the lower barb 10 is interference-fitted with the slot 2 8. The lower barb 10 and the upper barb 6 are both made of tin bronze alloy and silver-plated. The wire clamp seat 2 is made of 6061 alloy (i.e., aluminum alloy) and silver-plated. The plating thickness of the lower barb 10 and the upper barb 6 should not be less than 10μm.

[0036] Preferably, in order to locate the outside of the cable, an upper semicircular limiting ring 27 is provided on the upper outer side of each of the two sides of the first through hole 103, and a lower semicircular limiting ring 28 is provided on the upper outer side of each of the two sides of the lower half U-shaped notch 14. Each upper semicircular limiting ring 27 and lower semicircular limiting ring 28 cooperate to form a circular limiting ring for limiting the cable. By setting the circular limiting ring, the exposed conductor is limited and waterproof, preventing rainwater from entering the first through hole 103.

[0037] like Figure 1 As shown, preferably, to facilitate the closure of the unused second through hole 202, a screw cap 29 is screwed onto the outside of the second through hole 202. Two L-shaped positioning grooves 291 are symmetrically arranged on the outer side of the second through hole 202. A positioning block 292 that cooperates with the L-shaped positioning groove 291 is provided on the inner side of the screw cap 29. When the second through hole 202 is not needed, the positioning block 292 inside the screw cap 29 can be inserted into the notch of the L-shaped positioning groove 291, and then rotated to lock the positioning block 292 into the groove of the L-shaped positioning groove 291, thereby closing the second through hole 202.

[0038] This structure features a novel wire clamp comprising a wire clamp housing 1 and a wire clamp base 2 within the housing 1. The base 2 contains two internal wire clamping holes 201. An upper barb 6 is positioned above each hole 201, and an aluminum slider 7 is slidably connected within each hole. A lower barb 10 extends upwards above the slider 7. The interlocking lower barb 10 and upper barb 6 clamp the cable inserted laterally into the internal wire clamping holes 201. The torque screw 11 exposed below adjusts the tension between the lower barb 10 and the upper barb 6. The spacing allows it to clamp cables of different diameters. Compared to existing cable clamps, this structure uses an up-and-down piercing method to clamp the passing cables, resulting in a stronger clamping force and making it less prone to loosening. In addition, since the aluminum slider 7 and the cable clamp seat 2 are both made of aluminum alloy, the overall stability against thermal expansion and contraction is better. Furthermore, the installation notch 15 on the side of the cable clamp seat 2 ensures that the deformation stress of the elastic aluminum alloy conforms to Hooke's law, allowing it to spring back and compensate for the deformation of the cable clamp seat 2, causing it to deform slowly and shortening the deformation time, ultimately ensuring a more stable clamping effect on the cable.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wire clamp, comprising a wire clamp housing (1) and a wire clamp base (2) disposed within the wire clamp housing (1), characterized in that: The wire clamp housing (1) is provided with a mounting groove (3), and the wire clamp seat (2) is placed in the mounting groove (3). The wire clamp seat (2) is provided with two longitudinally penetrating inner clamping holes (201). Above each inner clamping hole (201), one or more slots (4) are arranged parallel to each other. An upper aluminum pressure post (5) is inserted into each slot (4). Below each upper aluminum pressure post (5), one or more upper spikes (6) are arranged vertically. Below each inner clamping hole (201), an aluminum slider (7) is slidably connected up and down. The upper part of the aluminum slider (7) One or more slots (8) are arranged in parallel. A lower aluminum material pressure column (9) is inserted into each slot (8). One or more lower barbs (10) are vertically arranged above each lower aluminum material pressure column (9). The lower barbs (10) are symmetrically arranged with the upper barbs (6). A torque screw (11) is rotatably connected below each aluminum material slider (7). The screw part of the torque screw (11) is threaded to the bottom of the wire clamp seat (2). The screw part of the torque screw (11) is located on the outside of the bottom of the wire clamp housing (1), and the head of the torque screw (11) is placed on the outside of the bottom of the wire clamp housing (1).

2. A wire clamp according to claim 1, characterized in that, The wire clamp housing (1) includes an insulating shell (101) and a side-flip cover (102) fitted over the insulating shell (101). The wire clamp seat (2) is placed inside the insulating shell (101), and the mounting groove (3) is placed inside the insulating shell (101). The insulating shell (101) has two transversely penetrating first through holes (103), which are located inside the mounting groove (3). The insulating shell (101) has two longitudinally arranged second through holes (202) below it, and each second through hole (202) communicates with one of the first through holes (103). A mounting notch (104) is provided on the side of one of the first through holes (103). The side-flip cover (102) is hinged to one side of the insulating shell (101) via a hinge shaft (30) and is used to close the mounting notch (104). A limiting protrusion (12) is provided on the other side of the insulating shell (101). A limiting through groove (13) is provided on the side-flip cover (102) to engage with the limiting protrusion (12). Two transversely penetrating lower U-shaped notches (14) are provided on the side-flip cover (102). The lower U-shaped notches (14) cooperate with the upper part of the first through hole (103) to form a wire groove for inserting cables. The inner clamping through hole (201) is placed in the wire groove, and the torque screw (11) penetrates the second through hole (202).

3. A wire clamp according to claim 2, characterized in that: On one side of one of the inner wire through holes (201), there is a second mounting notch (15) aligned with the first mounting notch (104). On the other side of the inner wire through hole (201) with the second mounting notch (15), there is an assembly notch (19) on both the front and back. A raised guide strip (16) is provided above each assembly notch (19). An insertion groove (17) is provided on the side of one of the aluminum sliders (7). A sliding guide groove (18) that cooperates with the guide strip (16) is provided on both the front and back sides of the insertion groove (17).

4. A wire clamp according to claim 1 or 2, characterized in that: A positioning groove (20) is provided at the bottom of the aluminum slider (7), and a guide notch (21) communicating with the positioning groove (20) is provided on the side of the aluminum slider (7), with one end of the guide notch (21) placed on the side of the aluminum slider (7). A lifting column (23) is provided at the head of the torque screw (11), and a limiting post (22) capable of being inserted into the guide notch (21) is provided below the lifting column (23). After being inserted through the guide notch (21), it can be locked in the positioning groove (20). A retaining spring (24) that is locked on the outside of the lifting column (23) is also inserted on the aluminum slider (7). The retaining spring (24) includes two spaced retaining strips (25). The two retaining strips (25) form a clamping jaw (26) for clamping the lifting column (23). The moving direction of the retaining spring (24) is perpendicular to the moving direction of the torque screw (11) on the guide notch (21).

5. A wire clamp according to claim 1 or 2, characterized in that: The lower end of the upper barb (6) and the upper end of the lower barb (10) are both pointed structures.

6. A wire clamp according to claim 2, characterized in that: Each first through hole (103) has an upper semicircular limiting ring (27) on the upper outer side of each side, and each lower half U-shaped notch (14) has a lower semicircular limiting ring (28) on the upper outer side of each side. Each upper semicircular limiting ring (27) and lower semicircular limiting ring (28) together form a circular limiting ring for limiting the cable.

7. A wire clamp according to claim 2 or 3, characterized in that: A screw cap (29) is screwed onto the outside of the second through hole (202). Two L-shaped positioning grooves (291) are symmetrically arranged on the outside of the second through hole (202). A positioning block (292) that cooperates with the L-shaped positioning groove (291) is arranged on the inside of the screw cap (29).

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