A cable joint with retreat prevention function
By introducing anti-reverse strips and anti-reverse teeth into the cable joint, the problem of loosening of the nut and joint body due to vibration is solved, achieving a stable connection and sealing effect for the cable joint.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI LANKELEC
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-07
AI Technical Summary
The nuts and bodies of existing cable joints are prone to loosening or detachment due to vibration and cable swinging, posing a safety hazard.
A cable connector with anti-reverse function was designed. By setting anti-reverse strips and anti-reverse teeth on the nut and connector body, the relative arrangement of inclined planes and flat planes can achieve clockwise tightening and counterclockwise blocking of the nut to prevent loosening.
It effectively prevents cable joints from loosening and coming off, ensuring safe connection and sealing performance of equipment.
Smart Images
Figure CN224473035U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machinery, and in particular to cable connectors, specifically a cable connector with a backstop function. Background Technology
[0002] Cable connectors are connecting devices used in industrial equipment. They are employed in many equipment connections to cables as both a cable fixation and protection component, achieving waterproofing, moisture protection, and preventing loosening, ultimately ensuring the safe operation of the equipment. After installation, cable connectors can become loose or even detached due to vibration and cable swaying, posing a significant safety hazard. Utility Model Content
[0003] The purpose of this utility model is to provide a cable connector with a backstop function, which solves the technical problem of loosening or even detachment between the nut and the connector body in the prior art.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A cable connector with anti-reverse function includes a nut and a connector body. The nut has an upper convex ring along its outer circumference. The connector body is tubular, and a lower convex ring is provided along its outer circumference in the middle portion of the connector body. External threads are provided on the upper and lower outer walls of the connector body, and internal threads are provided on the inner wall of the nut. The nut is positioned on the upper side of the connector body, and its inner wall is threadedly connected to the upper part of the connector body. An elastic anti-reverse strip is provided on the nut; the upper end of the anti-reverse strip is fixedly connected to the upper convex ring, and the lower end of the anti-reverse strip extends downwards. Extending to the outside of the lower convex ring, the length direction of the anti-reverse strip is parallel to the axial direction of the connector body. The connector body is provided with anti-reverse teeth, which are disposed on the surface of the lower convex ring. A first inclined surface is provided on one side of the lower part of the anti-reverse strip, and a first flat surface is provided on the other side of the lower part of the anti-reverse strip. A second inclined surface is provided on one side of the anti-reverse tooth, and a second flat surface is provided on the other side of the anti-reverse tooth. The first inclined surface and the second inclined surface are disposed on adjacent sides along the circumferential direction, and the first flat surface and the second flat surface are disposed on adjacent sides along the circumferential direction.
[0006] Furthermore, the first inclined surface is disposed on the front side of the anti-reverse strip along the clockwise direction of the nut, the first flat surface is disposed on the front side of the anti-reverse strip along the counterclockwise direction of the nut, the second inclined surface is disposed on the rear side of the anti-reverse tooth along the clockwise direction of the connector body, and the second flat surface is disposed on the rear side of the anti-reverse tooth along the counterclockwise direction of the connector body.
[0007] Furthermore, the first plane is located in an axial plane of the nut, and the second plane is located in an axial plane of the connector body.
[0008] Furthermore, the number of anti-reverse strips is two or three, and the anti-reverse strips are evenly distributed along the circumference. The number of anti-reverse teeth is the same as the number of anti-reverse strips, and the anti-reverse teeth are evenly distributed along the circumference.
[0009] Furthermore, the surface of the upper convex ring is symmetrically provided with six upper support surfaces, the surface of the lower convex ring is symmetrically provided with six lower support surfaces, the upper end of the anti-reverse strip is provided between two adjacent upper support surfaces, and the anti-reverse tooth is provided between two adjacent lower support surfaces.
[0010] Furthermore, the angle between the extended surface of the first inclined plane and the extended surface of the first plane is an acute angle, and the angle between the extended surface of the second inclined plane and the extended surface of the second plane is an acute angle.
[0011] Furthermore, a gasket and a seal are sequentially arranged between the inner cavity of the nut and the upper end of the connector body. The gasket is located on the side closer to the nut, and a sealing ring is provided at the lower end of the connector body. A nut is located below the sealing ring.
[0012] Working principle:
[0013] The cable connector is fitted around the outer circumference of the cable. The cable connector is tightened by screwing the nut and the connector body together. On this basis, an anti-reverse strip structure is added to the nut and an anti-reverse tooth structure is added to the connector body. The anti-reverse strip and the anti-reverse tooth each include a bevel and a plane, respectively. The bevels are set opposite to each other, and the planes are set opposite to each other.
[0014] When the nut is tightened clockwise, the anti-reverse strip rotates towards the anti-reverse teeth, and the two inclined surfaces rotate relative to each other until the anti-reverse strip and anti-reverse teeth come into contact with each other. Under the guidance of the inclined surfaces, the anti-reverse strip is squeezed and undergoes a brief, small-amplitude deformation. After the two inclined surfaces come into contact with each other, the anti-reverse strip returns to its original shape until the nut is tightened.
[0015] When the nut is loosened by turning it counterclockwise, the anti-reverse strip turns towards the anti-reverse teeth, and the two planes rotate relative to each other until the anti-reverse strip and anti-reverse teeth come into contact with each other. After the two planes abut against each other, there is no inclined surface to participate in the guidance, the anti-reverse strip cannot be misaligned with the anti-reverse teeth, and the nut cannot continue to rotate counterclockwise, thus achieving the function of anti-reverse loosening.
[0016] Compared with the prior art, the beneficial effects of this utility model are: by combining the anti-reverse strip structure and the anti-reverse tooth structure, the nut can be tightened normally in the clockwise direction on the connector body, while it will play a blocking role when it is loosened in the counterclockwise direction, thus achieving the effect of preventing loosening. Attached Figure Description
[0017] Figure 1 This is a schematic diagram illustrating the explosion effect of a cable connector with anti-reverse function according to this utility model.
[0018] Figure 2 yes Figure 1 A magnified diagram of point I.
[0019] Figure 3 yes Figure 1 A magnified view of section II.
[0020] Figure 4 This is a three-dimensional schematic diagram of the assembly state of a cable connector with anti-reverse function according to this utility model.
[0021] Figure 5 This is a side view of the assembled state of a cable connector with anti-reverse function according to this utility model.
[0022] Figure 6 yes Figure 5 A schematic diagram of the AA cross-section.
[0023] Figure 7 yes Figure 5 Schematic diagram of the BB cross-section.
[0024] Figure 8 yes Figure 7 A magnified view of section III.
[0025] Figure 9 yes Figure 5 A schematic diagram of the CC cross-section.
[0026] Figure 10 yes Figure 9 A magnified view of section IV in the middle.
[0027] Figure 11 This is a schematic diagram of the anti-reverse function of a cable connector with anti-reverse function according to this utility model.
[0028] In the figure, 1 is a nut; 2 is a gasket; 3 is a seal; 4 is a connector body; 5 is a sealing ring; 6 is a nut; 7 is a backstop strip; 8 is a backstop tooth; 71 is the first inclined surface; 72 is the first plane; 81 is the second inclined surface; 82 is the second plane. Detailed Implementation
[0029] Example 1
[0030] Please see Figures 1-11 This utility model provides a technical solution:
[0031] A cable connector with anti-reverse function includes a nut 1 and a connector body 4. The nut 1 has an upper convex ring along its outer circumference. The connector body 4 is tubular, with a lower convex ring along its outer circumference in the middle portion. External threads are provided on the upper and lower outer walls of the connector body 4, and internal threads are provided on the inner wall of the nut 1. The nut 1 is positioned on the upper side of the connector body 4, and its inner wall is threadedly connected to the upper part of the connector body 4. An elastic anti-reverse strip 7 is provided on the nut 1. The upper end of the anti-reverse strip 7 is fixedly connected to the upper convex ring, and the lower end of the anti-reverse strip 7 extends downward to the outer side of the lower convex ring. The length direction of the anti-reverse strip 7 is parallel to the axis of the connector body 4. The joint body 4 is provided with anti-reverse teeth 8, which are arranged in parallel. The anti-reverse teeth 8 are arranged on the surface of the lower convex ring. One side of the lower part of the anti-reverse strip 7 is provided with a first inclined surface 71, and the other side of the lower part of the anti-reverse strip 7 is provided with a first flat surface 72. One side of the anti-reverse teeth 8 is provided with a second inclined surface 81, and the other side of the anti-reverse teeth 8 is provided with a second flat surface 82. The first inclined surface 71 and the second inclined surface 81 are arranged on the side adjacent to each other in the circumferential direction, and the first flat surface 72 and the second flat surface 82 are arranged on the side adjacent to each other in the circumferential direction.
[0032] Furthermore, the first inclined surface 71 is provided on the front side of the anti-reverse strip 7 along the clockwise direction of the nut 1, the first flat surface 72 is provided on the front side of the anti-reverse strip 7 along the counterclockwise direction of the nut 1, the second inclined surface 81 is provided on the rear side of the anti-reverse tooth 8 along the clockwise direction of the connector body 4, and the second flat surface 82 is provided on the rear side of the anti-reverse tooth 8 along the counterclockwise direction of the connector body 4.
[0033] Specifically, regarding the aforementioned front / rear sides relative to the rotation direction of the component itself, when the nut 1 rotates clockwise (locks), the first inclined surface 71 and the second inclined surface 81 approach each other until they contact each other, and the two inclined surfaces act as guides, allowing the nut 1 to continue rotating clockwise; when the nut 1 rotates counterclockwise (retracts), the first plane 72 and the second plane 82 approach each other until they contact each other, and the two planes act as blocks and prevents the nut 1 from continuing to rotate counterclockwise.
[0034] Specifically, in the circumferential direction, the first inclined surface 71 and the second inclined surface 81 are adjacent, and the first plane 72 and the second plane 82 are adjacent. When the anti-reverse strip 7 has not passed the anti-reverse tooth 8, the circumferential distance between the first inclined surface 71 and the second inclined surface 81 is relatively short, while the circumferential distance between the first plane 72 and the second plane 82 is relatively long. After the anti-reverse strip 7 passes the anti-reverse tooth 8, the circumferential distance between the first plane 72 and the second plane 82 is relatively short, while the circumferential distance between the first inclined surface 71 and the second inclined surface 81 is relatively long. However, the relative relationships remain unchanged, and there will be no situation where the inclined surface and the plane are opposite each other.
[0035] Specifically, when the nut 1 is tightened, the first inclined surface 71 and the second inclined surface 81 are in contact and guide it. When the nut 1 is retracted, the first flat surface 72 and the second flat surface 82 are in contact and prevent the anti-reverse strip 7 from continuing to rotate.
[0036] Specifically, the second inclined surface 81 is provided on the side that tightens the nut 1, and the second flat surface 82 is provided on the side that retracts the nut 1.
[0037] Furthermore, the first plane 72 is located in an axial plane of the nut 1, and the second plane 82 is located in an axial plane of the connector body 4.
[0038] Specifically, the first inclined surface 71 and the second inclined surface 82 have the same inclination angle relative to the circumferential tangent, so that the first inclined surface 71 and the second inclined surface 82 can fit better when they overlap, and have a better guiding effect; the nut 1 is coaxial with the connector body 4, and the first plane 72 and the second plane 82 overlap when they fit, which has a better blocking and anti-backward effect.
[0039] Furthermore, the number of anti-reverse strips 7 is two or three, and the anti-reverse strips 7 are evenly distributed along the circumference. The number of anti-reverse teeth 8 is the same as the number of anti-reverse strips 7, and the anti-reverse teeth 8 are evenly distributed along the circumference.
[0040] Specifically, there must be at least one anti-reverse strip 7 and one anti-reverse tooth 8. When there are two, they are symmetrically arranged along the circumference. When there are three, any two are arranged at 120° intervals.
[0041] Furthermore, the surface of the upper convex ring is symmetrically provided with six upper support surfaces, the surface of the lower convex ring is symmetrically provided with six lower support surfaces, the upper end of the anti-reverse strip 7 is provided between two adjacent upper support surfaces, and the anti-reverse tooth 8 is provided between two adjacent lower support surfaces.
[0042] Furthermore, the angle between the extended surface of the first inclined plane 71 and the extended surface of the first plane 72 is an acute angle, and the angle between the extended surface of the second inclined plane 81 and the extended surface of the second plane 82 is an acute angle.
[0043] Furthermore, a gasket 2 and a seal 3 are sequentially arranged between the inner cavity of the nut 1 and the upper end of the connector body 4. The gasket 2 is located on the side close to the nut 1, and a sealing ring 5 is provided at the lower end of the connector body 4. A nut 6 is located on the lower side of the sealing ring 5.
[0044] Work process:
[0045] The nut 1, gasket 2, seal 3, and connector body 4 are sequentially fitted onto the outer circumference of the cable. After one end of the cable and the lower end of the connector body 4 pass through the mounting hole of the equipment, the sealing ring 5 and nut 6 are fitted onto the lower end of the connector body 4 and tightened to achieve a locking installation between the cable connector and the equipment. Finally, the nut 1 is tightened to achieve a locking installation between the cable and the cable connector. The sealing ring 5, after being compressed and deformed, forms a seal between the cable connector and the equipment, and the seal 3, after being compressed and deformed, achieves a seal between the cable and the cable connector.
[0046] When it is necessary to loosen the nut 1, the anti-reverse strip 7 can be slightly pried outward by using a screwdriver or other tools, so as to pass over the anti-reverse tooth 8 and achieve retraction. Since the material has a certain degree of elasticity, the slight prying will not break the anti-reverse strip 7, thus rendering the nut 1 unusable.
Claims
1. A cable connector with anti-reverse function, comprising a nut (1) and a connector body (4), wherein the outer periphery of the nut (1) is provided with an upper convex ring along the circumferential direction, the connector body (4) is tubular, and the outer periphery of the middle part of the connector body (4) is provided with a lower convex ring along the circumferential direction, both the upper and lower outer walls of the connector body (4) are provided with external threads, the inner wall of the nut (1) is provided with internal threads, the nut (1) is disposed on the upper side of the connector body (4), and the inner wall of the nut (1) is threadedly connected to the upper part of the connector body (4), characterized in that: The nut (1) is provided with an elastic anti-reverse strip (7). The upper end of the anti-reverse strip (7) is fixedly connected to the upper convex ring. The lower end of the anti-reverse strip (7) extends downward to the outside of the lower convex ring. The length direction of the anti-reverse strip (7) is parallel to the axial direction of the connector body (4). The connector body (4) is provided with anti-reverse teeth (8). The anti-reverse teeth (8) are provided on the surface of the lower convex ring. A first inclined surface (71) is provided on one side of the lower part of the anti-reverse strip (7). A first plane (72) is provided on the other side of the lower part of the anti-reverse strip (7). A second inclined surface (81) is provided on one side of the anti-reverse tooth (8). A second plane (82) is provided on the other side of the anti-reverse tooth (8). The first inclined surface (71) and the second inclined surface (81) are provided on adjacent sides along the circumferential direction. The first plane (72) and the second plane (82) are provided on adjacent sides along the circumferential direction.
2. A cable connector with anti-reverse function according to claim 1, characterized in that: The first inclined surface (71) is disposed on the front side of the anti-reverse strip (7) along the clockwise direction of the nut (1), the first flat surface (72) is disposed on the front side of the anti-reverse strip (7) along the counterclockwise direction of the nut (1), the second inclined surface (81) is disposed on the rear side of the anti-reverse tooth (8) along the clockwise direction of the connector body (4), and the second flat surface (82) is disposed on the rear side of the anti-reverse tooth (8) along the counterclockwise direction of the connector body (4).
3. A cable connector with anti-reverse function according to claim 1, characterized in that: The first plane (72) is located in an axial plane of the nut (1), and the second plane (82) is located in an axial plane of the connector body (4).
4. A cable connector with anti-reverse function according to claim 1, characterized in that: The number of anti-reverse strips (7) is two or three, and the anti-reverse strips (7) are evenly distributed along the circumference. The number of anti-reverse teeth (8) is the same as the number of anti-reverse strips (7), and the anti-reverse teeth (8) are evenly distributed along the circumference.
5. A cable connector with anti-reverse function according to claim 1, characterized in that: The upper convex ring has six upper support surfaces symmetrically arranged on its surface, and the lower convex ring has six lower support surfaces symmetrically arranged on its surface. The upper end of the anti-reverse strip (7) is arranged between two adjacent upper support surfaces, and the anti-reverse tooth (8) is arranged between two adjacent lower support surfaces.
6. A cable connector with anti-reverse function according to claim 1, characterized in that: The angle between the extended surface of the first inclined plane (71) and the extended surface of the first plane (72) is an acute angle, and the angle between the extended surface of the second inclined plane (81) and the extended surface of the second plane (82) is an acute angle.
7. A cable connector with anti-reverse function according to claim 1, characterized in that: A gasket (2) and a seal (3) are sequentially arranged between the inner cavity of the nut (1) and the upper end of the connector body (4). The gasket (2) is located on the side close to the nut (1). A sealing ring (5) is provided at the lower end of the connector body (4). A nut (6) is provided on the lower side of the sealing ring (5).