A flange type cable connector and method of use

Abstract

This invention discloses a flange-type cable connector and its usage method, comprising a flange base, an arc-shaped pressure ring, fastening bolts, and an eccentric cam. The flange base has a central hole in the middle and a slot on its side connecting to the central hole. Multiple fixing holes are provided around the central hole, with at least one fixing hole located on one side of the slot. The arc-shaped pressure ring is located within the slot and can slide radially. The fastening bolt passes through the fixing hole. The eccentric cam is rotatably connected to the fastening bolt outside the slot, and its outer contour surface abuts against the outer wall of the arc-shaped pressure ring. When rotated, it pushes the arc-shaped pressure ring to contract towards the central hole to clamp the cable. This connector uses an eccentric cam to drive a single set of arc-shaped pressure rings, replacing the traditional symmetrical bolt clamping method, reducing the number of accessories, lowering costs, and requiring only the rotation of the eccentric cam to complete cable fixing and release. This significantly improves the convenience of operation in confined spaces, ensures clamping stability, adapts to cables of various diameters, and has strong versatility.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment cable fixing technology, specifically to a flange-type cable connector and its usage method, which is particularly suitable for mechanical anchoring joints for cables that require frequent disassembly and assembly. Background Technology

[0002] In the field of industrial cable connections, flanged cable connectors are widely used in machinery manufacturing, automation equipment, and communication engineering as key components for cable fixing and sealing. Their core function is to securely clamp the cable through structural design, while simultaneously using the mounting holes on the flange base to achieve a rigid connection with equipment or pipelines, ensuring stable connection under conditions of vibration and tension.

[0003] Currently, most flange-type cable connectors on the market use a symmetrically arranged arc-shaped pressure ring and bolt fastening structure to secure cables. Specifically, two arc-shaped pressure rings are set on both sides of the flange base surface, and the two pressure rings are respectively positioned on both sides of the central hole. When it is necessary to secure the cable, the bolts on both sides must be tightened simultaneously. The axial feed of the bolts pushes the arc-shaped pressure rings to retract into the central hole until the two pressure rings clamp the cable together. When disassembling, the two bolts must be loosened symmetrically to allow the pressure rings to return to their original position and release the cable. A commonly used structure can be found in a flange-type cable connector disclosed in application number CN202220485786.0.

[0004] However, this traditional structure has obvious drawbacks in practical applications: First, it has a large number of parts, requiring paired arc-shaped pressure rings and bolts, which not only increases the production cost but also increases the difficulty of the assembly process. The installation and removal of cables require the use of tools (such as screwdrivers and wrenches); Second, it has poor operation convenience, especially when working in confined spaces. Since it is necessary to tighten or loosen two symmetrical bolts at the same time, the range of motion of the tools is limited, which can easily lead to operational interference, resulting in low installation and removal efficiency or even failure to install or remove.

[0005] Therefore, in view of the shortcomings of existing flange-type cable connectors in terms of structural simplification, ease of operation and cost control, there is an urgent need to develop a new type of cable connector structure with fewer accessories, easier disassembly and assembly, and suitability for operation in confined spaces. Summary of the Invention

[0006] To address the shortcomings of the prior art, the present invention provides a flange-type cable connector and its usage method.

[0007] The technical solution adopted in this invention is: a flange-type cable connector, comprising:

[0008] The flange base has a through central hole in the middle, a slot on its side that connects to the central hole, and multiple fixing holes on the outer periphery of the central hole, at least one of the multiple fixing holes being located on one side of the slot.

[0009] An arc-shaped pressure ring, wherein the arc-shaped pressure ring is disposed within a slot and can slide radially along the slot;

[0010] Fastening bolts, wherein the fastening bolts are inserted into the fixing holes;

[0011] An eccentric cam is rotatably connected to a fastening bolt on the outside of the slot. The outer contour surface of the eccentric cam abuts against the outer wall of the arc-shaped pressure ring. By rotating the eccentric cam, the outer contour surface of the eccentric cam pushes the arc-shaped pressure ring to radially contract towards the central hole to compress the cable.

[0012] Furthermore, there are two fixing holes located on one side of the slot, symmetrically distributed on both sides of the arc-shaped pressure ring.

[0013] Furthermore, the outer wall of the arc-shaped pressure ring is provided with a concave surface that matches the eccentric cam. The surface of the concave surface is provided with a plurality of first convex steps at intervals. The outer contour surface of the eccentric cam is provided with second convex steps at intervals that cooperate with the first convex steps. The first convex steps and the second convex steps are interlocked to achieve a stable connection.

[0014] Furthermore, the middle part of the fastening bolt located on one side of the slot is a smooth rod section, and the two ends of the smooth rod section are provided with limit steps. The center of the eccentric cam is provided with a sleeve, and the sleeve can be rotatably fitted onto the smooth rod section between the two limit steps.

[0015] Furthermore, an operating handle is integrally provided on the eccentric cam, and the operating handle extends out of the slot.

[0016] Furthermore, it also includes a helical spring sleeve and a rubber sleeve. One end of the helical spring sleeve is provided with a welding sleeve, which is fixedly connected to the inner wall of the outlet end of the central hole. The rubber sleeve is connected to the other end of the helical spring sleeve, and the end of the rubber sleeve away from the helical spring sleeve is provided with a rounded corner.

[0017] Furthermore, it also includes a rubber gasket and a waterproof sealing sleeve. The waterproof sealing sleeve is fitted onto the inlet end of the central hole, and its opening has a radially inwardly contracting elastic sealing lip. The rubber gasket is placed on the flange base, and the rubber gasket is provided with a mating hole corresponding to the fixing hole.

[0018] Furthermore, the bottom surface of the slot is provided with a guide groove, and the bottom surface of the arc-shaped pressure ring is provided with a guide boss that matches the guide groove. The width of the guide groove is 0.5-1.5mm larger than the width of the guide boss.

[0019] This application also provides a method for using a flange-type cable connector, including the following steps:

[0020] Step 1) Pass the cable through the center hole of the waterproof sealing sleeve and the flange base in sequence, so that the cable fits tightly against the elastic sealing lip;

[0021] Step 2) Tighten the fastening bolts to secure the device;

[0022] Step 3) Rotate the eccentric cam so that its outer contour surface pushes the arc-shaped pressure ring to contract radially until the cable is pressed and fixed.

[0023] The beneficial effects of this invention are:

[0024] 1. Simple structure and low cost: This application adopts a design with a single set of arc-shaped pressure rings and an eccentric cam, which eliminates the need for another set of arc-shaped pressure rings and corresponding bolts that are symmetrically arranged in the traditional structure, thus simplifying the structure, reducing accessories, and lowering production costs.

[0025] 2. Easy to operate and suitable for operation in confined spaces: It eliminates the need for tightening / loosening symmetrical bolts in traditional structures. The radial contraction and reset of the arc-shaped pressure ring can be achieved simply by rotating the eccentric cam, which can quickly fix and release the cable. When disassembling, only the eccentric cam needs to be rotated. No other disassembly tools are required, which effectively reduces the operating space requirement. In confined environments, it can greatly shorten the disassembly and assembly time and improve work efficiency.

[0026] 3. Wider range of applications and stronger compatibility: By adjusting the rotation angle of the eccentric cam, different degrees of radial shrinkage of the arc-shaped pressure ring can be achieved, which can adapt to cables of various diameter specifications. There is no need to design connectors separately for different cables, which enhances the product's versatility and market adaptability.

[0027] In addition to the objectives, features and advantages described above, the present invention has other objectives, features and advantages.

[0028] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the present invention.

[0030] Figure 2 This is an exploded view of the present invention.

[0031] Figure 3 This is a structural schematic diagram of the flange base.

[0032] Figure 4 This is a schematic diagram of the two structures of the arc-shaped pressure ring.

[0033] Figure 5This is a schematic diagram of the fastening bolts and the eccentric cam.

[0034] Figure 6 for Figure 4 Enlarged diagram at point A

[0035] Figure 1-6 Components: 1. Flange base; 2. Center hole; 3. Groove; 4. Fixing hole; 5. Arc-shaped pressure ring; 6. Fastening bolt; 7. Eccentric cam; 8. Outer contour surface; 9. Concave surface; 10. First raised step; 11. Second raised step; 12. Smooth rod section; 13. Limiting step; 14. Sleeve; 15. Operating handle; 16. Helical spring sleeve; 17. Rubber sleeve; 18. Welding sleeve; 19. Rounded corner; 20. Rubber gasket; 21. Waterproof sealing sleeve; 22. Elastic sealing lip; 23. Mating hole; 24. Guide groove; 25. Guide boss. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0037] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0038] This invention provides a flange-type cable connector and its usage method.

[0039] In this embodiment, refer to Figure 1-6 The flange-type cable connector includes:

[0040] The flange base 1 has a through central hole 2 in the middle, and a slot 3 on its side that connects to the central hole 2. Multiple fixing holes 4 are provided on the outer periphery of the central hole 2, and at least one of the multiple fixing holes is located on one side of the slot.

[0041] Arc-shaped pressure ring 5, wherein the arc-shaped pressure ring 5 is disposed in the slot and can slide radially along the slot;

[0042] Fastening bolt 6, the fastening bolt 6 passing through the fixing hole;

[0043] An eccentric cam 7 is rotatably connected to a fastening bolt on the outside of the slot. The outer contour surface 8 of the eccentric cam 7 abuts against the outer wall of the arc-shaped pressure ring. By rotating the eccentric cam 7, the outer contour surface of the eccentric cam 7 pushes the arc-shaped pressure ring to radially contract towards the central hole to compress the cable.

[0044] In the above technical solution, the center hole of the flange base allows the cable to pass through, the side slot provides radial sliding space for the arc-shaped pressure ring, and the outer peripheral fixing hole is used to install fastening bolts to achieve overall fixation. The arc-shaped pressure ring can move radially within the slot, and the eccentric cam is rotatably connected by fastening bolts. Its outer contour surface abuts against the outer wall of the arc-shaped pressure ring. Utilizing the eccentric structural characteristics, when rotating, the outer contour surface pushes the arc-shaped pressure ring to contract towards the center hole, thereby clamping the cable.

[0045] With the structure of a single arc-shaped pressure ring driven by an eccentric cam, cable fixing does not require disassembly and assembly of bolts, simplifying the structure, reducing the number of parts, and simplifying the operation process. Cable fixing and release can be completed simply by rotating the eccentric cam, improving the convenience of working in confined spaces, reducing costs while ensuring the stability of cable clamping.

[0046] Specifically, there are two fixing holes located on one side of the slot, symmetrically distributed on both sides of the arc-shaped pressure ring.

[0047] In this embodiment, two symmetrically distributed fixing holes are provided on one side of the slotted ring, so that both sides of the arc-shaped pressure ring are limited by the fastening bolts, thus confining the arc-shaped pressure ring within the slot. Simultaneously, the symmetrical design of the double fixing holes, with eccentric cams connected to the fastening bolts located in the slotted fixing holes, ensures uniform clamping force through the pressing action of the eccentric cams on both sides. This prevents the pressure ring from tilting due to unilateral force, resulting in more uniform cable clamping and improved connection stability and reliability.

[0048] Specifically, the outer wall of the arc-shaped pressure ring is provided with a concave surface 9 that matches the eccentric cam. The surface of the concave surface 9 is provided with a plurality of first convex steps 10 at intervals. The outer contour surface of the eccentric cam is provided with second convex steps 11 that cooperate with the first convex steps 10 at intervals. The first convex steps and the second convex steps are interlocked to achieve a stable connection.

[0049] In this embodiment, the concave surface of the outer wall of the arc-shaped pressure ring fits against the outer contour surface of the eccentric cam, increasing the contact area; the first convex step on the concave surface and the second convex step on the eccentric cam form a mechanical limiting structure to prevent relative sliding between them. The combination of concave and convex surfaces improves contact stability, and the interlocking structure of the convex steps enhances friction, preventing the eccentric cam from rotating on its own under vibration or other operating conditions, ensuring that the clamping force of the arc-shaped pressure ring on the cable remains stable and reducing the risk of cable loosening.

[0050] The cross-sections of the first and second convex steps are arc-shaped.

[0051] Specifically, the middle part of the fastening bolt located on one side of the slot is a smooth rod section 12, and the two ends of the smooth rod section 12 are provided with limiting steps 13. The center of the eccentric cam is provided with a sleeve 14, and the sleeve 14 can be rotatably fitted onto the smooth rod section between the two limiting steps.

[0052] In this embodiment, the smooth rod section in the middle of the fastening bolt provides rotational support for the sleeve of the eccentric cam, and the limiting steps at both ends restrict the axial movement of the sleeve, so that the eccentric cam can only rotate around the smooth rod section and cannot move axially along the bolt. The cooperation between the limiting steps and the smooth rod section achieves the positioning of the eccentric cam, preventing its axial displacement during operation or use, ensuring that the eccentric cam and the arc-shaped pressure ring always maintain effective contact, ensuring stable driving effect, and simplifying the assembly process.

[0053] Specifically, the eccentric cam is integrally provided with an operating handle 15, and part of the operating handle 15 extends out of the slot.

[0054] In this embodiment, the integrated operating handle on the eccentric cam extends beyond the slot, providing the operator with a convenient point of force application, allowing manual rotation of the eccentric cam without the need for additional tools. This eliminates the need for tools, further improving ease of assembly and disassembly, especially in confined spaces, enabling quick cable fixing and release, and increasing work efficiency.

[0055] Specifically, it also includes a helical spring sleeve 16 and a rubber sleeve 17. One end of the helical spring sleeve is provided with a welding sleeve 18, which is fixedly connected to the inner wall of the outlet end of the central hole. The rubber sleeve is connected to the other end of the helical spring sleeve, and the end of the rubber sleeve away from the helical spring sleeve is provided with a rounded corner 19.

[0056] In this embodiment, the helical spring sleeve is connected to the cable outlet end of the center hole via a welded sleeve, providing axial support and bending protection for the cable. A rubber sleeve is connected to the end of the helical spring sleeve, and its rounded corner design reduces wear during cable bending while enhancing sealing performance. The helical spring sleeve effectively resists the axial tensile force and bending stress of the cable, protecting it from excessive bending and mechanical damage. The rubber sleeve and rounded corner design further reduce the risk of cable wear, extend cable life, and improve the protection performance of the cable outlet end.

[0057] Specifically, it also includes a rubber gasket 20 and a waterproof sealing sleeve 21. The waterproof sealing sleeve is fitted onto the inlet end of the central hole, and its opening has an elastic sealing lip 22 that contracts radially inward. The rubber gasket is placed on the flange base, and the rubber gasket is provided with a mating hole 23 corresponding to the fixing hole.

[0058] In this embodiment, the elastic sealing lip of the waterproof sealing sleeve fits tightly against the cable at the inlet end to achieve a waterproof seal; the rubber gasket is placed between the flange base and the mounting surface, and works with the fastening bolts of the fixing hole to enhance the overall sealing and cushioning effect of the installation.

[0059] Specifically, the bottom surface of the slot is provided with a guide groove 24, and the bottom surface of the arc-shaped pressure ring is provided with a guide boss 25 that matches the guide groove. The width of the guide groove is 0.5-1.5mm larger than the width of the guide boss.

[0060] In this embodiment, the guide groove on the slotted bottom surface cooperates with the guide boss on the bottom surface of the arc-shaped pressure ring to form a sliding guide structure. The gap of 0.5-1.5mm ensures smooth sliding of the arc-shaped pressure ring while allowing it to offset laterally within a certain range, facilitating the operation and clamping of the eccentric cams on both sides. The guide structure constrains the movement direction of the arc-shaped pressure ring, ensuring that it contracts radially and avoiding uneven clamping caused by excessive offset. At the same time, the reasonable gap design balances the smoothness of sliding and the positioning accuracy, improving the stability of the overall structure.

[0061] This application also provides a method for using a flange-type cable connector, including the following steps:

[0062] Step 1) Pass the cable through the center hole of the waterproof sealing sleeve and the flange base in sequence, so that the cable fits tightly against the elastic sealing lip;

[0063] Step 2) Tighten the fastening bolts to secure the device;

[0064] Step 3) Rotate the eccentric cam so that its outer contour surface pushes the arc-shaped pressure ring to contract radially until the cable is pressed and fixed.

[0065] This application is simple, and its usage is even simpler, with convenient assembly and disassembly. During installation, first pass the cable through the center hole and waterproof sealing sleeve, ensuring the cable path is correct; then, secure the cable with the fastening bolts to ensure a stable installation; finally, rotate the eccentric cam to drive the arc-shaped pressure ring to clamp the cable, completing the fixation. Disassembly is simple; just rotate the eccentric cam to loosen it. Both assembly and disassembly are very convenient, requiring no other tools.

[0066] Please note to all technical personnel: Although the present invention has been described according to the specific embodiments above, the ideas of the present invention are not limited to this invention. Any modifications that utilize the ideas of the present invention will be included within the scope of protection of this patent.

Claims

1. A flange-type cable connector, characterized in that... include: The flange base has a through central hole in the middle, a slot on its side that connects to the central hole, and multiple fixing holes on the outer periphery of the central hole, at least one of the multiple fixing holes being located on one side of the slot. An arc-shaped pressure ring, wherein the arc-shaped pressure ring is disposed within a slot and can slide radially along the slot; Fastening bolts, wherein the fastening bolts are inserted into the fixing holes; An eccentric cam is rotatably connected to a fastening bolt on the outside of the slot. The outer contour surface of the eccentric cam abuts against the outer wall of the arc-shaped pressure ring. By rotating the eccentric cam, the outer contour surface of the eccentric cam pushes the arc-shaped pressure ring to radially contract towards the central hole to compress the cable. The outer wall of the arc-shaped pressure ring is provided with a concave surface that matches the eccentric cam. The surface of the concave surface is provided with a plurality of first convex steps at intervals. The outer contour surface of the eccentric cam is provided with second convex steps at intervals that cooperate with the first convex steps. The first convex steps and the second convex steps are interlocked to achieve a stable connection. The bottom surface of the slot is provided with a guide groove, and the bottom surface of the arc-shaped pressure ring is provided with a guide boss that matches the guide groove. The width of the guide groove is 0.5-1.5mm larger than the width of the guide boss.

2. The flange-type cable connector according to claim 1, characterized in that: There are two fixing holes located on one side of the slot, symmetrically distributed on both sides of the arc-shaped pressure ring.

3. The flange-type cable connector according to claim 2, characterized in that: The fastening bolt located on one side of the slot is a smooth rod section in the middle. The smooth rod section has limit steps at both ends. The eccentric cam has a sleeve at its center. The sleeve can be rotatably fitted onto the smooth rod section between the two limit steps.

4. The flange-type cable connector according to claim 3, characterized in that: An operating handle is integrally provided on the eccentric cam, and the operating handle extends out of the slot.

5. The flange-type cable connector according to any one of claims 1-4, characterized in that: It also includes a helical spring sleeve and a rubber sleeve. One end of the helical spring sleeve is provided with a welding sleeve, which is fixedly connected to the inner wall of the outlet end of the central hole. The rubber sleeve is connected to the other end of the helical spring sleeve, and the end of the rubber sleeve away from the helical spring sleeve is provided with a rounded corner.

6. The flange-type cable connector according to claim 5, characterized in that: It also includes a rubber gasket and a waterproof sealing sleeve. The waterproof sealing sleeve is fitted onto the inlet end of the central hole and has an elastic sealing lip that contracts radially inward at its opening. The rubber gasket is placed on the flange base and has a mating hole corresponding to the fixing hole.

7. A method of using a flange-type cable connector as described in any one of claims 1-6, characterized in that... include: Step 1) Pass the cable through the center hole of the waterproof sealing sleeve and the flange base in sequence, so that the cable fits tightly against the elastic sealing lip; Step 2) Tighten the fastening bolts to secure the device; Step 3) Rotate the eccentric cam so that its outer contour surface pushes the arc-shaped pressure ring to contract radially until the cable is pressed and fixed.

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