Double-locking metal cable fixing head

Abstract

The utility model provides a double-locking metal cable fixing head, and the fixing head comprises a fixing head body which is internally provided with a fixing head inner cavity for a cable to pass through; the top surface of the forced cap assembly is provided with a connecting part, the forced cap assembly is internally provided with a forced cap inner cavity which is communicated with the fixing head inner cavity and is used for allowing a cable to penetrate through, and the lower side of the forced cap assembly is connected with the fixing head body; the waterproof piece is arranged in the inner cavity of the forced cap and is used for sealing and locking the cable in the middle; the gasket is arranged on the gasket mounting surface of the waterproof piece; when assembled, the forced cap assembly and the waterproof piece are used for double locking of the cable in the axial direction of the cable. By adopting a double-locking structure, the sealing performance of the cable is improved, and good waterproof and moistureproof effects are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment, and more specifically, to a double-locking metal cable fixing head. Background Art

[0002] In modern equipment, cables are usually used to connect electrical equipment for power transmission. The connection between cables and electrical equipment has become a key step that affects the performance of cables. In common cable and electrical equipment connection devices, cable glands are usually used to fix the two. Cable glands are widely used to fix and protect wires and cables in mechanical equipment electrical, ship electrical, and anti-corrosion equipment. Their main function is to keep the cable outlet hole sealed and waterproof and dustproof, so that the machine can operate safely and reliably.

[0003] At present, the cable fixing heads on the market usually have poor sealing and cannot effectively seal to achieve waterproof and moisture-proof, which easily causes external water, dust, etc. to enter the box, causing pollution inside the box.

[0004] Therefore, how to improve the sealing performance between the cable fixing head and the cable so as to make it have better waterproof and moisture-proof effect is a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] The present application provides a double-locking metal cable fixing head, which solves the technical problem of poor sealing of existing cable fixing heads.

[0006] The present application provides a double-locking metal cable fixing head, comprising:

[0007] The fixing head body has a fixing head inner cavity for the cable to pass through;

[0008] A forced cap assembly, the top surface of which is provided with a connecting portion, the interior of which is provided with a forced cap inner cavity which is communicated with the inner cavity of the fixing head and is used for passing the cable, and the lower side of the forced cap assembly is connected to the fixing head body;

[0009] A waterproof member, arranged in the inner cavity of the forced cap, for sealing and locking the cable in the middle;

[0010] A gasket is placed on the gasket mounting surface of the waterproof member; and is configured as follows:

[0011] In the assembled state, the forced cap assembly and the waterproof component are used to double lock the cable along the axial direction of the cable.

[0012] In some embodiments, the forced cap assembly comprises:

[0013] A locking nut, the upper portion of which is provided with a connecting portion, and the lower portion of which is provided with an internal thread for matching with the fixing head body;

[0014] A first locking block and a second locking block are used to be respectively arranged to fit on two connecting surfaces of the connecting portion;

[0015] Two fastening screws are used to connect the first locking block, the connecting portion and the second locking block at the left and right sides respectively; the upper end of the locking nut is

[0016] Two spring washers are arranged between the fastening screw and the connecting portion to adjust the locking angle and locking force.

[0017] In some embodiments, the waterproof member is an elastic waterproof member, and the upper end of the waterproof member extends upward to have an extension portion, and the top surface of the extension portion is flush with the top surface of the forced cap assembly.

[0018] In some embodiments, an outer circumference of the fixing head body is provided with an external thread, and an inner thread is provided on the lower side of the clamping nut, and the fixing head body and the clamping nut are matched with each other through the external thread and the inner thread.

[0019] In some embodiments, a mounting groove for mounting an O-ring is provided on the end surface of the fixing head body facing the mounting panel, and the O-ring in the assembled state protrudes from the end surface of the mounting groove.

[0020] In some embodiments, the protrusion of the O-ring is 0.4-0.6 mm.

[0021] In some embodiments, at least one first groove is disposed on the inner side of the first locking block, and a second groove corresponding to the first groove is disposed on the inner side of the second locking block.

[0022] In some embodiments, two adjacent first grooves are spaced apart in the axial direction.

[0023] In some embodiments, the outer periphery of the locking nut is provided with a rounded structure.

[0024] The double-locking metal cable fixing head provided in the present application optimizes the structure of the traditional cable fixing head. By improving the structure of the forced cap assembly and the waterproof part, the metal cable fixing head has a double locking function and can double-lock the cable along the axial direction, thereby improving the sealing of the connection between the metal cable fixing head and the cable, and making the product have better waterproof and moisture-proof effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0026] Figure 1 A schematic diagram of the three-dimensional structure of the double-locking metal cable fixing head provided in this application;

[0027] Figure 2 An exploded view of the double locking metal cable gland provided for this application;

[0028] Figure 3 for Figure 1 A cross-sectional view of

[0029] Figure 4 An exploded view of the clamping assembly provided for this application;

[0030] Figure 5 A top view of the clamping assembly provided for this application;

[0031] Figure 6 for Figures 1 to 5 Schematic diagram of the three-dimensional structure of the waterproof part;

[0032] Among them, 1-fixed head body, 2-forced cap assembly, 3-waterproof part, 4-gasket, 5-O-ring;

[0033] 21-locking nut, 22-first locking block, 23-second locking block, 24-fastening screw, 25-spring washer, 31-extension part;

[0034] 211 -connecting portion, 221 -first groove. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] refer to Figures 1 to 3 The present application provides a double-locking metal cable fixing head, which mainly includes: a fixing head body 1, a forced cap assembly 2, a waterproof part 3 and a gasket 4.

[0037] The fixing head body 1 has a fixing head inner cavity inside, which can be used for the cable to pass through. The top surface of the forced cap assembly 2 is provided with a connecting portion 211, and a forced cap inner cavity is provided inside, which can be used for the cable to pass through and is connected to the fixing head inner cavity. The lower side of the forced cap assembly 2 is connected to the fixing head body 1. The waterproof part 3 is arranged in the forced cap inner cavity, which is used to seal and lock the cable in the middle. The gasket 4 is arranged on the gasket installation surface on the top of the waterproof part 3, which is used to press the waterproof ring and the forced cap assembly 2.

[0038] In the assembled state, the forced cap assembly 2 and the waterproof component 3 double-lock the cable along the axial direction of the cable, so that the waterproof component 3 fits tightly with the internal cable, significantly improving the sealing of the cable connection, thereby improving the moisture-proof and waterproof performance.

[0039] refer to Figure 4 and Figure 5 In a specific embodiment, the clamping nut assembly 2 includes: a clamping nut 21, a first locking block 22, a second locking block 23, two fastening screws 24, and two spring washers 25. The upper part of the clamping nut 21 is provided with a connecting portion 211, the lower inner side is provided with an internal thread, and the outer periphery of the fixing head body 1 is provided with an external thread. The fixing head body 1 and the clamping nut 21 are connected to each other through the cooperation of the external thread and the internal thread.

[0040] The first locking block 22 and the second locking block 23 are both semi-circular, and a plane is provided at each end of the locking block, and a connecting hole is provided at the center of the plane. The first locking block 22 and the second locking block 23 are respectively attached to two opposite connecting surfaces on the connecting portion 211 along both sides of the radial direction through the planes at both ends. After the planes are connected to the connecting surfaces, two fastening screws 24 connect the first locking block 22, the connecting portion 211, and the second locking block 23 at the left and right sides respectively. Two spring washers 25 are respectively arranged between the fastening screws 24 and the connecting portion 211 to adjust the locking angle and locking force.

[0041] Specifically, one of the first locking block 22 and the second locking block 23 is provided with a through hole, and the other is provided with a threaded hole. After the cable passes through the cable fixing head, the fastening screw 24 is sequentially passed through the spring washer 25, the first locking block 22, the connecting portion 211 and the second locking block 23, and the end of the fastening screw 24 is locked in the first locking block 22 or the threaded hole of the second locking block 23. The provision of the spring washer 25 can effectively prevent rotation and increase the tightness of the threaded connection.

[0042] In this embodiment, after the cable passes through the cable fixing head, the first locking block 22 and the second locking block 23 are locked and fixed by adjusting the fastening screw 24, which can effectively prevent the cable from shaking.

[0043] It should be noted that, in other embodiments, the locking nut 21 , the first locking block 22 and the second locking block 23 may be locked by connecting them in a bolt and nut manner.

[0044] refer to Figure 6 In order to effectively protect the cable and prevent the cable from being worn due to contact with the first locking block 22 and the second locking block 23 of the metal part, the waterproof part 3 is made of elastic material, and the upper end of the waterproof part 3 extends upward to form an extension part 31. The inner diameter of the extension part 31 is smaller than the inner diameter of the forced cap assembly 2, and the top surface of the extension part 31 is flush with the top surface of the forced cap assembly 2. In this way, when the waterproof part 3 is squeezed and stretched in the axial direction, the upper end of the waterproof part 3 protrudes from the top of the locking nut 21. When the cable is bent, the protruding structure of the waterproof part 3 can protect the cable, which can effectively prevent the cable from being worn and extend the service life of the cable.

[0045] The fixing head body 1 is provided with a mounting groove, which is arranged toward the end face of the mounting panel, and is used to install the O-ring 5. In the assembled state, the O-ring 5 protrudes from the end face of the mounting groove to ensure that under the locking force of the locking nut, the O-ring 5 contacts and squeezes the mounting platform, thereby forming a sealing structure. The protrusion amount of the O-ring 5 in the installed state is preferably, but not limited to, 0.4 to 0.6 mm.

[0046] The O-ring 5 and the mounting platform are deformed in a compressed state to achieve efficient sealing with the mounting platform, thereby improving the sealing with the mounting plane, thereby improving the waterproof and moisture-proof effects.

[0047] At least one first groove 221 is provided on the inner side of the first locking block 22, and at least one second groove is provided on the inner side of the second locking block 23. The first groove 221 is used to correspond to the second groove one by one and is distributed on the same circumference, thereby increasing friction and resistance, and locking is more secure. Two adjacent first grooves 221 are distributed at intervals along the axial direction, so as to lock the cable along the axial direction.

[0048] In order to prevent the clamping nut 21 from being worn, a rounded structure is provided on the outer periphery of the clamping nut 21 . By designing the rounded corners of the clamping nut 21 , the service life of the clamping nut 21 can be extended.

[0049] Therefore, the present application provides a metal cable fixing head with a double locking function, which can improve the sealing between the cable and make it have a better waterproof and moisture-proof effect. Since the electrical equipment will vibrate during use, the cable fixing head will become loose, which seriously affects the performance of the product. The metal cable fixing head of the present application has a double locking function, which increases the reliability of cable fixing and prevents loosening, and solves the technical problem that the product loosens due to improper design of the connection structure of the components of the cable fixing head, thereby affecting the use of the product.

[0050] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0051] The above is a detailed introduction to the double-locking metal cable fixing head provided by the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A double locking metal cable gland, characterized in that: include: A fixing head body (1) is provided with a fixing head inner cavity for passing the cable; A forced cap assembly (2) has a connection portion (211) on its top surface, and a forced cap inner cavity which is communicated with the inner cavity of the fixing head and is used for passing the cable, and the lower side of the forced cap assembly (2) is connected to the fixing head body (1); A waterproof member (3) is arranged in the inner cavity of the force cap and is used to seal and lock the cable in the middle; A gasket (4) is placed on the gasket installation surface of the waterproof component (3); and is configured as follows: In the assembled state, the forced cap assembly (2) and the waterproof component (3) are used to double-lock the cable along the axial direction of the cable.

2. The double locking metal cable gland according to claim 1, characterized in that: The forced cap assembly (2) comprises: A locking nut (21) having a connecting portion (211) at its upper portion and an internal thread on its lower inner side for matching with the fixing head body (1); A first locking block (22) and a second locking block (23) are used to be respectively arranged to fit on two connecting surfaces of the connecting portion (211); Two fastening screws (24) are used to connect the first locking block (22), the connecting portion (211) and the second locking block (23) at the left and right sides respectively; the upper end of the locking nut (21) is Two spring washers (25) are arranged between the fastening screw (24) and the connecting portion (211) and are used to adjust the locking angle and locking force.

3. The double locking metal cable gland according to claim 1, characterized in that: The waterproof component (3) is an elastic waterproof component. The upper end of the waterproof component (3) extends upward to form an extension portion (31). The top surface of the extension portion (31) is flush with the top surface of the forced cap assembly (2).

4. The double locking metal cable gland according to claim 2, characterized in that: The outer circumference of the fixing head body (1) is provided with an external thread, and the lower side of the clamping nut (21) is provided with an internal thread. The fixing head body (1) and the clamping nut (21) are matched with each other through the external thread and the internal thread.

5. The double locking metal cable gland according to claim 1, characterized in that: The end surface of the fixing head body (1) facing the installation panel is provided with a mounting groove for mounting an O-ring (5); the O-ring (5) in the assembled state protrudes from the end surface of the mounting groove.

6. The double locking metal cable gland according to claim 5, characterized in that: The protrusion amount of the O-ring (5) is 0.4-0.6 mm.

7. The double locking metal cable gland according to claim 2, characterized in that: At least one first groove (221) is provided on the inner side of the first locking block (22), and a second groove corresponding to the first groove (221) is provided on the inner side of the second locking block (23).

8. The double locking metal cable gland according to claim 7, characterized in that: Two adjacent first grooves (221) are spaced apart from each other along the axial direction.

9. The double locking metal cable gland according to claim 7, characterized in that: The outer periphery of the locking nut (21) is provided with a rounded structure.

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