A cable mating self-locking sleeve

Abstract

This application belongs to the field of cable splicing technology and provides a self-locking sleeve for cable splicing, comprising: a sleeve fitted over the outside of the cable, with locking clamps centrally connected at both ends of the sleeve, a clamp opening in the center of the clamp, and locking openings on the periphery of the clamp, the locking openings communicating with the clamp openings, the locking openings facing the same direction as the axial direction of the sleeve, and the radial surface of the locking openings being inclined, the radial length of the locking openings gradually narrowing towards the center of the sleeve through the inclined surface; locking structures are respectively provided at both ends of the sleeve, the locking structures including: a torsion block, a pull rod, and a locking block, the torsion block being threadedly fitted onto the outside of the sleeve, rotating the torsion block to cause it to move axially along the sleeve, one end of the pull rod moving with the torsion block but not rotating with it, the other end of the pull rod passing through the corresponding locking opening and hinged to the locking block. This application can greatly improve the connection strength of the cable, significantly enhance the tensile and torsional resistance of the cable connection, and effectively improve the stability of the cable connection.

Description

Technical Field

[0001] This application relates to the field of cable splicing technology, and in particular to a self-locking sleeve for cable splicing. Background Technology

[0002] A cable is a device for transmitting electrical energy or signals, typically consisting of several or groups of conductors. A cable is made of one or more mutually insulated conductors and an outer insulating protective layer, which transmits electricity or information from one place to another.

[0003] When a cable is damaged or broken due to mechanical damage or other reasons, it needs to be spliced ​​for repair, or when the cable length is insufficient to meet actual needs, it also needs to be spliced.

[0004] Currently, the traditional method of splicing cables usually involves winding the copper cores of two cable segments together and then securing them with tape at both ends of the cable and the outside of the copper cores. This splicing method limits the tensile and torsional resistance at the joint of the two cable segments, resulting in a weak connection strength and poor stability.

[0005] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Utility Model Content

[0006] The purpose of this application is to provide a self-locking sleeve for cable splicing, so as to solve or alleviate the problem that the traditional cable splicing method has limited tensile and torsional resistance at the connection point and weak connection strength.

[0007] To achieve the above objectives, this application provides the following technical solution:

[0008] This application provides a cable splice self-locking sleeve, comprising: a sleeve sleeved on the outside of a cable, with locking clamps centrally connected at both ends of the sleeve, a clamp opening in the center of the clamp, and a locking port on the periphery of the clamp, the locking port communicating with the clamp opening, the locking port facing the same direction as the axial direction of the sleeve, and the radial surface of the locking port being a slope, the radial length of the locking port gradually narrowing towards the middle of the sleeve due to the slope; locking structures respectively disposed at both ends of the sleeve, the locking structure comprising: a torsion block, a pull rod, and a locking block, the torsion block being threadedly fitted on the outside of the sleeve to rotate the torsion block and displace it along the axial direction of the sleeve, one end of the pull rod following the movement of the torsion block but not rotating with it, the other end of the pull rod passing through the corresponding locking port and hinged to the locking block; when the pull rod follows the torsion block to move towards the middle of the sleeve, it pulls the locking block into the locking port, and as the locking block gradually penetrates into the locking port, it generates radial pressure on the cable.

[0009] Preferably, the diameter of the locking clamp is larger than the outer diameter of the sleeve to increase the radial length of the locking opening;

[0010] The diameter of the clamp opening of the locking clamp is not less than the inner diameter of the sleeve.

[0011] Preferably, the sleeve is provided with external threads, and the twisting block is rectangular in shape.

[0012] Preferably, the twisting block has an annular clamp on the side facing the end of the sleeve, and the clamp is fitted onto the outside of the sleeve.

[0013] Preferably, the opening of the hoop plate is narrowed to form a limiting cavity between it and the torsion block;

[0014] The cross-section of the hoop plate is L-shaped.

[0015] Preferably, the hoop opening of the hoop plate is larger than the outer diameter of the sleeve, so that a gap is reserved between the hoop opening of the hoop plate and the outer diameter of the sleeve for the pull rod to move radially.

[0016] Preferably, the limiting cavity is filled with an annular limiting plate, the limiting plate is sleeved on the outside of the sleeve, and the sleeve hole of the limiting plate matches the outer diameter of the sleeve.

[0017] Preferably, one end of the pull rod facing the sleeve is hinged to the limiting plate exposed between the hoop of the hoop plate and the sleeve;

[0018] The lock openings are distributed in multiple ways along the circumference of the lock clamp, and the pull rods are distributed in multiple ways along the circumference of the limiting plate, corresponding to the lock openings.

[0019] Preferably, the side of the limiting plate away from the torsion block is covered with rollers along the circumferential direction.

[0020] Preferably, the shape of the lock block is consistent with the shape of the lock opening, but the size of the lock block is larger than that of the lock opening;

[0021] The locking block has a rubber pad on the end face facing the cable.

[0022] Compared with the closest prior art, the technical solution of this application has the following beneficial effects:

[0023] This application can greatly improve the connection strength of the cable, significantly enhance the tensile and torsional resistance of the cable connection, and effectively improve the stability of the cable connection. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. Wherein:

[0025] Figure 1 This is a schematic diagram illustrating the actual usage of this application;

[0026] Figure 2 This is a schematic diagram of the overall structure of this application;

[0027] Figure 3 This is an overall schematic diagram of the sleeve structure of this application;

[0028] Figure 4 This is a front view of the end face of the sleeve structure in this application;

[0029] Figure 5 This is a schematic diagram of the overall twist block structure of this application;

[0030] Figure 6 This is a schematic diagram showing the fit between the tie rod and the locking block structure of this application;

[0031] Figure 7 for Figure 6 Another perspective illustration.

[0032] In the diagram: 1. Sleeve; 2. Locking clamp; 3. Locking port; 4. Twist block; 5. Limiting plate; 6. Pull rod; 7. Locking block; 8. Hoop plate; 9. Roller; 10. Rubber pad. Detailed Implementation

[0033] The present application will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation and not by way of limitation. In fact, those skilled in the art will recognize that modifications and variations can be made to the present application without departing from the scope or spirit thereof. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the present application encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0034] In the following description, the terms "first / second / third" are used merely to distinguish similar objects and do not represent a specific order of objects. It is understood that "first / second / third" may be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing embodiments of this disclosure only and is not intended to limit this disclosure.

[0036] In the description of this application, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and do not require that this application be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. The terms "connected," "linked," and "set up" used in this application should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; direct connections or indirect connections through intermediate components; wired connections, radio connections, or wireless communication signal connections. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0037] This embodiment aims to provide a cable splicing self-locking sleeve, whose main function is to greatly improve the connection strength of the cable, making the connection less likely to break and more stable.

[0038] Reference Figures 1-4 The system includes: a sleeve 1, which is fitted over the outside of the cable. The sleeve 1 is an externally threaded tube. At both ends of the sleeve 1, a locking clamp 2 is welded and joined in the center. The diameter of the locking clamp 2 is larger than the outer diameter of the sleeve 1. The locking clamp 2 has a clamp opening in the center, the diameter of which is not less than the inner diameter of the sleeve 1, so as not to obstruct the cable from passing through the sleeve 1. Five locking holes 3 are distributed circumferentially around the outer surface of the locking clamp 2. As the diameter of the locking clamp 2 increases, the radial length of the locking hole 3 also increases. The locking hole 3 is connected to the clamp opening of the locking clamp 2. The locking hole 3 faces the same direction as the axial direction of the sleeve 1, and the radial surface of the locking hole 3, that is, the side facing the cable, is a slope. The slope makes the radial length of the locking hole 3 gradually narrow towards the middle of the sleeve 1. Both ends of the sleeve 1 are fitted with a locking structure to tighten the cable.

[0039] Reference Figure 2 , Figure 5 , Figure 6 and Figure 7The locking structure consists of a pair of components symmetrically positioned at both ends of the sleeve 1. The locking structure includes a torsion block 4, a pull rod 6, and a locking block 7. The torsion block 4 is rectangular in shape, or can be directly fitted with a nut. An annular clamping plate 8 is welded to the side of the torsion block 4 facing the end of the sleeve 1. The clamping plate 8 is fitted onto the outside of the sleeve 1. The clamping opening of the clamping plate 8 is narrowed to form a limiting cavity with the torsion block 4. The clamping plate 8 has an L-shaped cross-section. The clamping opening of the clamping plate 8 must be larger than the outer diameter of the sleeve 1 to allow for a pre-existing gap between the clamping opening of the clamping plate 8 and the outer diameter of the sleeve 1, allowing the pull rod 6 to move radially. The limiting cavity is filled with an annular limiting plate 5, which does not restrict the rotation of the limiting plate 5. The limiting plate 5 is fitted onto the outside of the sleeve 1, and the sleeve hole of the limiting plate 5 matches the outer diameter of the sleeve 1, allowing part of the limiting plate 5 to be exposed between the clamping opening of the clamping plate 8 and the sleeve 1.

[0040] Five corresponding locking slots 3 are provided for the pull rod 6. The end of the pull rod 6 facing the sleeve 1 is hinged to the limiting plate 5 exposed between the clamping slot of the clamping plate 8 and the sleeve 1, so that the pull rod 6 moves with the torsion block 4 but does not rotate with it. The other end of the pull rod 6 passes through the corresponding locking slot 3 and is hinged to the locking block 7. The inner edge of the limiting plate 5 can be pre-cut with five slots corresponding to the pull rod 6, so that the end of the pull rod 6 can be hinged in the slot by a pin and the pull rod 6 can have the condition to move radially. The locking block 7 can be pre-cut with a notch at the end corresponding to the pull rod 6, so that the end of the pull rod 6 can be hinged in the notch by a pin.

[0041] The shape of the locking block 7 is the same as that of the locking opening 3, but the size of the locking block 7 is larger than that of the locking opening 3. Therefore, after the locking block 7 is pulled into the locking opening 3 by the pull rod 6, the locking block 7 will be stuck in the locking opening 3. Then, if the pulling force is continued to be applied to the locking block 7, the locking block 7 will be affected by the inclined surface of the locking opening 3 and generate radial pressure on the cable. Thus, the locking force of the cable can be generated by the joint confining pressure of the five locking blocks 7.

[0042] In this embodiment, sufficient clearance must be reserved between the pull rod 6 and the sleeve 1, and between the pull rod 6 and the annular opening of the clamp plate 8, so that the pull rod 6 can move radially to satisfy the radial compression state of the locking block 7.

[0043] In this embodiment, the side of the limiting plate 5 away from the twisting block 4 is covered with rollers 9 along the circumferential direction. When the hoop plate 8 rotates, the friction between the limiting plate 5 and the limiting cavity wall can be greatly reduced, thereby reducing the rotational resistance of the twisting block 4 and making the operation more convenient.

[0044] In this embodiment, a rubber pad 10 is fixedly adhered to the radial end face of the locking block 7, that is, the end face facing the cable, to enhance the adhesion of the locking block 7 to the cable and ensure the stability of the locking force.

[0045] In actual use, first, fit the self-locking fitting onto the outside of one section of the cable. After the two ends of the cable are connected and bound with tape, move the self-locking fitting to the connection point of the two cable sections and center it. The size of the sleeve 1 of the self-locking fitting can be adaptively selected according to the actual situation. Next, manually rotate the two torsion blocks 4 in opposite directions to bring them closer together and pull the locking block 7 into the locking port 3. Finally, use a tool to continue rotating the two torsion blocks 4 so that the locking block 7 can apply sufficient radial pressure to the cable to ensure that the locking force of the self-locking fitting on the cable reaches the most stable state.

[0046] The locking sleeve 1 provided in this embodiment can greatly improve the connection strength of the cable, significantly enhance the tensile and torsional resistance of the cable connection, and effectively improve the stability of the cable connection.

[0047] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A cable mating self-locking ferrule, characterized by, include: A sleeve is fitted over the outside of the cable. Both ends of the sleeve are centrally connected with locking clamps. The locking clamps have a central opening and a locking opening on the periphery of the locking clamps. The locking openings are connected to the openings. The locking openings face the same direction as the axial direction of the sleeve, and the radial surface of the locking openings is a slope. The slope makes the radial length of the locking openings gradually narrow towards the middle of the sleeve. A locking structure is provided at both ends of the sleeve. The locking structure includes a torsion block, a pull rod, and a locking block. The torsion block is threaded onto the outside of the sleeve so that rotating the torsion block causes it to move axially along the sleeve. One end of the pull rod moves with the torsion block but does not rotate with it. The other end of the pull rod passes through the corresponding locking port and is hinged to the locking block. As the pull rod moves toward the center of the sleeve following the torsion block, it pulls the locking block into the locking opening. As the locking block gradually penetrates deeper into the locking opening, it generates radial pressure on the cable.

2. The cable mating self-locking ferrule of claim 1, wherein, The diameter of the locking clamp is larger than the outer diameter of the sleeve to increase the radial length of the locking opening; The diameter of the clamp opening of the locking clamp is not less than the inner diameter of the sleeve.

3. The cable mating self-locking ferrule of claim 1, wherein, The sleeve is provided with external threads, and the twist block is rectangular in shape.

4. The cable mating self-locking ferrule of claim 1, wherein, The twisting block has an annular clamp on the side facing the end of the sleeve, and the clamp is fitted onto the outside of the sleeve.

5. The cable splicing self-locking sleeve according to claim 4, characterized in that, The narrowing of the hoop opening forms a limiting cavity between the hoop plate and the torsion block; The cross-section of the hoop plate is L-shaped.

6. The cable mating self-locking ferrule of claim 5, wherein, The hoop opening of the hoop plate is larger than the outer diameter of the sleeve, so that a gap is reserved between the hoop opening of the hoop plate and the outer diameter of the sleeve for the tie rod to move radially.

7. The cable mating self-locking ferrule of claim 6, wherein, The limiting cavity is filled with an annular limiting plate, which is sleeved on the outside of the sleeve, and the sleeve hole of the limiting plate matches the outer diameter of the sleeve.

8. The cable mating self-locking ferrule of claim 7, wherein, The end of the pull rod facing the sleeve is hinged to the limiting plate exposed between the hoop opening of the hoop plate and the sleeve; The lock openings are distributed in multiple ways along the circumference of the lock clamp, and the pull rods are distributed in multiple ways along the circumference of the limiting plate, corresponding to the lock openings.

9. The cable mating self-locking ferrule of claim 8, wherein, The side of the limiting plate away from the torsion block is covered with rollers along the circumferential direction.

10. The cable mating self-latching ferrule of claim 1, wherein, The shape of the lock block is the same as that of the lock opening, but the size of the lock block is larger than that of the lock opening; The locking block has a rubber pad on the end face facing the cable.

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