Retaining cable fixing head

Abstract

The utility model discloses a retaining cable fixing head, which relates to the technical field of electrical equipment and comprises a main body and a fixing nut. The main body is provided with a first external thread along the axis direction, and the first external thread is provided with a concave part along the axis direction of the main body; the fixing nut is provided with a first internal thread in the axis direction, the first internal thread is matched with the first external thread, and a protruding part is arranged on one side of the fixing nut. Wherein the main body is connected with the fixing nut through the first external thread and the first internal thread, and when the side, provided with the protruding part, of the fixing nut is flush with the end face of the main body, the protruding part is clamped in the sunken part. According to the retaining cable fixing head, when the side, provided with the protruding part, of the fixing nut is flush with the end face of the main body, the protruding part on one side of the fixing nut is clamped with the concave part of the first external thread of the main body, and the protruding part and the concave part are embedded to form limiting, so that loosening of a product caused by vibration or extreme weather is avoided, and the retaining effect is achieved; therefore, the stability, the reliability and the sealing performance of the product are enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical equipment technical field, especially a kind of anti-backout cable fixing head. BACKGROUND

[0002] In the field of electrical equipment such as machinery, ships and rail transit, electrical components inside electrical equipment need to be connected by wires or cables for power transmission. In order to fix and protect the wires or cables, cable fixing heads are widely used to achieve waterproof and dustproof effects and ensure the safe and reliable operation of machines.

[0003] Currently, existing cable fixing heads generally include a main body and a fixing nut, which are threadedly connected. As the length of use increases, the product may be at risk of loosening due to vibration. During sea transportation, the material properties may expand and contract due to high temperature, causing the product to loosen and affecting the sealing performance. In addition, the sealing performance of the cable fixing head also affects the safe operation of the cable. If there is oil leakage, it will not only affect the insulation performance of the cable and the reliability of the cable line, but also pose a threat to personal safety. Therefore, the sealing performance of the cable fixing head is crucial for the safe operation of power distribution and electronic and electrical equipment.

[0004] In summary, how to avoid the loosening of the cable fixing head due to vibration or environmental influence is a technical problem that needs to be solved by those skilled in the art. UTILITY MODEL CONTENT

[0005] The utility model aims to provide an anti-backout cable fixing head, which solves the technical problem of the existing cable fixing head that is prone to loosening due to vibration or environmental influence.

[0006] To achieve the above-mentioned purpose, the utility model provides an anti-backout cable fixing head, which includes:

[0007] The main body is provided with a first external thread in the axial direction, and the first external thread is provided with a recess in the axial direction of the main body;

[0008] The fixing nut is provided with a first internal thread in the axial direction, and the first internal thread is matched with the first external thread. One side of the fixing nut is provided with a protruding part.

[0009] The main body and the fixing nut are connected through the first external thread and the first internal thread. When one side of the fixing nut provided with the protruding part is flush with the end face of the main body, the protruding part is clamped in the recess.

[0010] Preferably, it further includes a jam nut, which is arranged at one end of the main body away from the fixing nut, and the jam nut is threadedly connected with the main body.

[0011] Preferably, the main body is provided with a second external thread, the gland nut is provided with a second internal thread, and the gland nut is connected with the main body through the second external thread and the second internal thread.

[0012] Preferably, a waterproof ring is further included, and the waterproof ring is arranged in the main body and located in an end of the main body connected with the gland nut.

[0013] Preferably, an annular groove is arranged in the main body, and one end of the waterproof ring is correspondingly arranged in the annular groove.

[0014] Preferably, a limiting groove is arranged on an outer side of the waterproof ring in a circumferential direction, and a limiting protrusion is arranged on an inner side of an end of the main body away from the fixing nut, and the limiting protrusion is correspondingly arranged in the annular groove.

[0015] Preferably, one end of the gland nut is inwardly bent to form a limiting part for limiting the waterproof ring.

[0016] Preferably, a sealing ring is further included, and the sealing ring is sleeved on an outer side of the main body and located at an end of the main body close to the fixing nut.

[0017] Preferably, the number of the recesses is six, and the recesses are distributed in a circumferential direction of the main body.

[0018] With respect to the above background, the stop-retreating cable fixing head provided by the utility model is characterized in that the main body and the fixing nut are connected through a first external thread and a first internal thread, the side of the fixing nut provided with the protruding part is flush with the end face of the main body, the protruding part on one side of the fixing nut is clamped with the recesses of the first external thread of the main body, the protruding part and the recesses are embedded and form a limit, the loosening caused by vibration or extreme weather during use or transportation of the product is avoided, the stop-retreating effect is achieved, and the stability, reliability and sealing performance of the product are enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only embodiments of the utility model, and other drawings can be obtained by the provided drawings without creative labor for the ordinary skilled in the art.

[0020] Figure 1 The utility model provides a stop-retreating cable fixing head three-dimensional structure schematic view;

[0021] Figure 2Another perspective structural schematic view of the retreat-stop cable fixing head provided by the utility model embodiment;

[0022] Figure 3 The cross-sectional schematic view of the retreat-stop cable fixing head provided by the utility model embodiment;

[0023] Figure 4 The exploded schematic view of the retreat-stop cable fixing head provided by the utility model embodiment;

[0024] Figure 5 The exploded schematic view of the retreat-stop cable fixing head provided by the utility model embodiment from another perspective.

[0025] Figures 1 to 5 Reference signs: 10, main body; 101, first external thread; 102, recessed part; 103, second external thread; 104, annular groove; 105, limiting protrusion; 11, fixing nut; 111, first internal thread; 112, protruding part; 12, force-fitting nut; 121, second internal thread; 122, limiting part; 13, waterproof ring; 131, limiting groove; 14, sealing ring. DETAILED DESCRIPTION

[0026] The technical solutions in the utility model embodiments will be described clearly and completely below with reference to the drawings in the utility model embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the protection scope of the utility model.

[0027] In order to enable those skilled in the art to better understand the utility model solutions, the utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0028] The utility model provides a kind of retreat-stop cable fixing head, and the retreat-stop effect of cable fixing head is realized by the limiting clamping design of main body 10 and fixed nut 11, effectively avoid the problem of loosening caused by vibration and extreme weather in use or transportation process.

[0029] Please refer to Figures 1 to 5The utility model provides a retreat -stopping cable fixing head, including main part 10 and fixed nut 11, main part 10 is roughly the rotary body structure that has the through -hole of being set up in the middle part, main part 10 is equipped with the first external thread 101 along the axial direction, and the recess 102 is equipped with along the axial direction of main part 10 to the first external thread 101, namely recess 102 is perpendicular to the first external thread 101 setting, fixed nut 11 is equipped with the first internal thread 111 along the axial direction, and the first internal thread 111 is adapted to the first external thread 101, and one side of fixed nut 11 is equipped with the protruding portion 112, wherein, main part 10 is connected with fixed nut 11 through the first external thread 101 and the first internal thread 111, when one side of fixed nut 11 is equipped with the protruding portion 112 and the end surface of main part 10 is flush, the protruding portion 112 is held in recess 102.

[0030] The first internal thread 111 is adapted to the first external thread 101, when the main part 10 is connected with the fixed nut 11 by screw thread, the protruding portion 112 of one side of the fixed nut 11 is flush with the end surface of the main part 10, the protruding portion 112 of one side of the fixed nut 11 is held with the recess 102 of the first external thread 101 of the main part 10, the protruding portion 112 and the recess 102 are embedded and form a limit, so as to play a limiting and fixing role, avoid the loosening caused by vibration or extreme weather during use or transportation of the product, achieve the retreat -stopping effect, thereby enhancing the stability, reliability and sealing property of the product, effectively prevent water or external pollution from entering the internal part of the electrical equipment, and ensure the safe operation of the electrical equipment.

[0031] In this paper, the recess 102 can be regarded as a groove provided on the periphery of the first external thread 101. Based on the existence of the groove, the continuous first external thread 101 is divided into several segments. The two sides of the groove and the first external thread 101 have arc chamfers to avoid stress concentration at the connection between the groove and the first external thread 101, and to ensure smoothness during the embedding and disengaging of the recess 102 and the protruding portion 112, thereby improving the use reliability.

[0032] In the embodiment, the cross section of the protruding portion 112 is triangular, and the cross section of the recess 102 is also triangular. The embedding between the protruding portion 112 and the recess 102 forms a limit. The shape structure of the recess 102 and the protruding portion 112 is not specifically limited in this application, and other forms can also be used, such as a semispherical protrusion with a semicircular cross section. The recess 102 is a groove with a semicircular cross section matched with the semispherical protrusion. In actual production, the specific conditions can be set according to the specific conditions. The protruding portion 112 is provided in multiple, and the multiple protruding portions 112 are uniformly distributed along the circumference of the fixed nut 11. In addition, the fixed nut 11 is a hexagonal nut, which is widely used. When installing, the fixed nut 11 is connected with the main part 10 by a hexagonal wrench, which is convenient to use.

[0033] Please refer to Figures 1 to 5 The utility model provides a fixed head of retreat of cable still includes forcing cap nut 12, forcing cap nut 12 is located the one end of main part 10 away from fixed nut 11, forcing cap nut 12 is connected with main part 10 by second outer thread 103 and second inner thread 121, and the connection is reliable.

[0034] Please refer to Figures 1 to 5 Main part 10 is equipped with second outer thread 103, and second outer thread 103 is arranged along the axial direction of main part 10, forcing cap nut 12 is equipped with second inner thread 121, and second inner thread 121 is arranged along the axial direction of forcing cap nut 12, and forcing cap nut 12 is connected with main part 10 by second outer thread 103 and second inner thread 121, and the connection is reliable.

[0035] Please refer to Figures 1 to 5 The utility model provides a fixed head of retreat of cable still includes waterproof ring 13, waterproof ring 13 is located in main part 10, and waterproof ring 13 is located in the one end of main part 10 and forcing cap nut 12 connection.Through setting up waterproof ring 13, enhance the waterproof effect of cable fixed head, to protect cable.

[0036] Please refer to Figures 1 to 5 Main part 10 is equipped with annular groove 104, and one end of waterproof ring 13 is correspondingly accommodated in annular groove 104.Through setting up annular groove 104, provide the installation position of waterproof ring 13, and annular groove 104 simultaneously plays the limiting action to waterproof ring 13, avoids the movement of waterproof ring 13 along the axial direction.

[0037] Please refer to Figures 1 to 5 The outer side of waterproof ring 13 is equipped with limiting groove 131 along the circumference, limiting groove 131 is annular, and the inner side of the one end of main part 10 away from fixed nut 11 is equipped with limiting protrusion 105, limiting protrusion 105 is correspondingly accommodated in annular groove 104, and the cooperation of limiting protrusion 105 and limiting groove 131 limits the movement of waterproof ring 13, plays the limiting action.The shape structure and quantity of the above-mentioned limiting protrusion 105 are not specifically limited in the application, limiting protrusion 105 can be the protrusion with rectangular, parallelogram or trapezoidal cross section, of course, can also be the protrusion with other cross-sectional shapes, and in actual production, can be set according to specific circumstances.

[0038] Please refer to Figures 1 to 5 One end of forcing cap nut 12 is inwardly bent to form limiting portion 122, for limiting and fixing waterproof ring 13, to avoid the movement of waterproof ring 13 along the axial direction.

[0039] Please refer to Figures 1 to 5The stop-retreating cable fixing head further comprises a sealing ring 14, the sealing ring 14 is sleeved outside the main body 10, and the sealing ring 14 is located at one end of the main body 10 close to the fixing nut 11. The one end of the main body 10 close to the fixing nut 11 is the mounting end of the main body 10, the fixing nut 11 is used for fastening the main body 10 and a layer to be fixed, and the sealing ring 14 is arranged between the mounting end of the main body 10 and the layer to be fixed, so that the sealing property of the cable fixing head is further ensured. The sealing ring 14 is preferably an elastic body, so that the sealing and waterproof effects can be achieved by better adhesion to surrounding components during cooperation, and specifically, the sealing ring 14 can be made of rubber.

[0040] For reference Figures 1 to 5 The recesses 102 can be arranged in a plurality of numbers, so that the stop-retreating effect between the main body 10 and the fixing nut 11 is further improved. In the embodiment, the number of the recesses 102 is six, and the recesses 102 are distributed along the circumference of the main body 10.

[0041] In addition, considering that the production cost of the existing cable fixing head is high and the quality is heavy, the stop-retreating cable fixing head provided by the utility model preferably arranges the jam nut 12 as an aluminum nut, arranges the main body 10 as an aluminum main body 10, and arranges the fixing nut 11 as an aluminum nut, so that the weight of the cable fixing head is reduced and the cost is saved to a certain extent under the premise of ensuring the use performance.

[0042] The stop-retreating cable fixing head, the main body 10 and the fixing nut 11 are connected through the first outer thread 101 and the first inner thread 111, when the side, where the protruding part 112 of the fixing nut 11 is arranged, is flush with the end surface of the main body 10, the protruding part 112 on one side of the fixing nut 11 is clamped with the recess 102 of the first outer thread 101 of the main body 10, the protruding part 112 and the recess 102 are embedded and form a limit, so that the limiting and fixing effects are achieved, the loosening caused by vibration or extreme weather in the process of use or transportation is avoided, the stop-retreating effect is achieved, and the stability, reliability and sealing property of the product are enhanced, water or external pollution can be effectively prevented from entering the electrical equipment, and the safe operation of the electrical equipment is ensured.

[0043] It should be noted that in the present specification, the relationship terms such as first and second are only used to distinguish one entity from another entity, and do not necessarily require or imply any actual relationship or order between the entities.

[0044] The principle and implementation mode of the present application are described by using specific examples in the present application, and the above examples are only used to help understand the method and core idea of the present application. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principle of the present application, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A retreat-preventing cable fixing head, characterized in that, The utility model relates to a kind of water-proofing joint, including: Main body, it is equipped with first outer thread along the axial direction, the first outer thread is equipped with recess along the axial direction of the main body; Fixed nut, it is equipped with first inner thread along the axial direction, the first inner thread is matched with the first outer thread, one side of the fixed nut is equipped with protruding part; Wherein, the main body is connected with the fixed nut by the first outer thread and the first inner thread, when one side of the fixed nut equipped with protruding part is flush with the end surface of the main body, the protruding part is held in the recess; The recess is the groove set on the outer periphery of first outer thread, and the groove divides the continuous first outer thread into several segments; The number of the recess is six, and is distributed along the circumference of the main body; Protruding part is provided as multiple, and multiple protruding parts are evenly distributed along the circumference of the fixed nut.

2. The cable gland of claim 1, wherein: Also include gland nut, the gland nut is equipped in the end of the main body away from the fixed nut, and the gland nut is threadedly connected with the main body.

3. The cable gland of claim 2, wherein: The main body is equipped with second outer thread, and the gland nut is equipped with second inner thread, and the gland nut is connected with the main body by the second outer thread and the second inner thread.

4. The cable gland of claim 3, wherein: Also include waterproof ring, the waterproof ring is equipped in the main body, and the waterproof ring is located in the end of the main body and the gland nut is connected.

5. The cable gland of claim 4, wherein: Annular groove is arranged in the main body, and one end of the waterproof ring is accommodated in the annular groove.

6. The cable gland of claim 5, wherein: The outer side of the waterproof ring is equipped with limiting groove along the circumference, and the inner side of the end of the main body away from the fixed nut is equipped with limiting protrusion, and the limiting protrusion is accommodated in the annular groove.

7. The cable gland of claim 6, wherein: The end of the gland nut is inwardly bent to form limiting part, for limiting the waterproof ring.

8. The cable gland of claim 7, wherein: Also include sealing ring, the sealing ring is sleeved on the outside of the main body, and the sealing ring is located in the end of the main body close to the fixed nut.

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