CN211046431U

CN211046431U - Cable fixing head

Info

Publication number: CN211046431U
Application number: CN201922283246.5U
Authority: CN
Inventors: 李小强; 曾凡乐; 张纯; 苏荣建
Original assignee: Beisit Electric Tech Hangzhou Co ltd
Current assignee: Beisit Electric Tech Hangzhou Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-07-17
Anticipated expiration: 2029-12-18

Abstract

The utility model discloses a cable fixing head, which comprises a main body, a tightening nut, a fastener, a waterproof ring and a blank cap, wherein one end of the main body is connected with the fastener, the other end of the main body is in threaded connection with the tightening nut, the waterproof ring is connected with the main body, the waterproof ring is arranged in an inner hole of the tightening nut, and the blank cap passes through the inner hole of the tightening nut and is arranged in the inner hole of the waterproof ring; the waterproof circle is close to the one end of forcing the tight nut, and the surface of waterproof circle is equipped with the boss that is used for with the tight nut joint of forcing to the removal of waterproof circle in the direction of forcing the tight nut height is restricted. Through set up the boss on the surface, waterproof circle can with compel tight nut joint, increased waterproof circle and compeled the precompression between the tight nut to waterproof circle in the dismantlement process has been avoided dropping from compeling tight nut.

Description

Cable fixing head

Technical Field

The utility model relates to a cable protection accessory technical field, more specifically say, relate to a cable fixing head.

Background

The cable fixing head is used for fixing and protecting a cable and is widely applied to the fields of mechanical equipment electricity, ship electricity and the like.

In the prior art, the waterproof ring easily falls out from the packing nut in the cable fixing head dismounting process, and the dismounting process is not facilitated.

In summary, how to avoid the waterproof ring from falling off from the tightening nut in the disassembling process is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a cable fixing head is equipped with the boss on the surface that waterproof circle is close to the one end of forcing the nut, increased and the precompression between the forcing nut to waterproof circle has been avoided in the dismantlement process to drop from forcing the nut.

In order to achieve the above object, the present invention provides the following technical solutions:

a cable fixing head comprises a main body, a packing nut, a fastener, a waterproof ring and a blank cap, wherein one end of the main body is connected with the fastener, the other end of the main body is in threaded connection with the packing nut, the waterproof ring is connected with the main body, the waterproof ring is installed in an inner hole of the packing nut, and the blank cap penetrates through the inner hole of the packing nut and is installed in the inner hole of the waterproof ring;

waterproof circle is close to compel tight nut's one end, waterproof circle's surface be equipped with be used for with compel tight nut joint's boss, in order to restrict waterproof circle is in compel tight nut direction of height's removal.

Preferably, the boss is an annular boss, and the axis of the annular boss coincides with the axis of the waterproof ring.

Preferably, the bosses are circular arc-shaped bosses, and a plurality of the bosses are uniformly distributed in the circumferential direction of the waterproof ring.

Preferably, the cross-section of boss is right trapezoid, the boss is close to the one end of main part is the inclined plane, just the inclined plane with the contained angle of the axis of waterproof circle is the acute angle.

Preferably, the tightening nut is far away from one end of the main body, and a stopping structure is arranged on the bottom surface of an inner hole of the tightening nut.

Preferably, a round corner is arranged between the bottom surface of the inner hole of the packing nut and the side wall surface of the inner hole of the packing nut.

The utility model provides a cable fixing head, including main part, compel tight nut, fastener, waterproof circle and stifle, the one end of main part is connected with the fastener, the other end of main part and compel tight nut threaded connection, waterproof circle is connected with the main part, waterproof circle is installed in the hole of compel tight nut, stifle passes the hole of compel tight nut and installs in the hole of waterproof circle; the waterproof circle is close to the one end of forcing the tight nut, and the surface of waterproof circle is equipped with the boss that is used for with the tight nut joint of forcing to the removal of waterproof circle in the direction of forcing the tight nut height is restricted.

Through set up the boss on the surface, waterproof circle can with compel tight nut joint, increased waterproof circle and compeled the precompression between the tight nut to waterproof circle in the dismantlement process has been avoided dropping from compeling tight nut.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of a locking cable fixing head provided by the present invention;

FIG. 2 is a schematic cross-sectional view of the locking cable retention head of FIG. 1;

FIG. 3 is a schematic top view of the waterproof ring of FIG. 1;

FIG. 4 is a cross-sectional schematic view of the waterproof ring of FIG. 3;

FIG. 5 is a schematic top view of the body of FIG. 1;

fig. 6 is a schematic cross-sectional view of the body of fig. 5.

In FIGS. 1-6:

the nut comprises a hexagonal nut 1, an O-shaped ring 2, a main body 3, a groove 31, a waterproof ring 4, a convex block 41, a convex block 42, a boss 5, a gasket 6, a packing nut 6 and a blank cap 7.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The core of the utility model is to provide a cable fixing head is equipped with the boss on the surface that waterproof circle is close to the one end of forcing the tight nut, increased and forced the pre-pressure between the tight nut to avoided dismantling the in-process waterproof circle and dropped from forcing the tight nut.

Referring to fig. 1-6, fig. 1 is a schematic structural diagram of an embodiment of a cable fixing head according to the present invention; FIG. 2 is a schematic cross-sectional view of the locking cable retention head of FIG. 1; FIG. 3 is a schematic cross-sectional view of the waterproof ring of FIG. 1; FIG. 4 is a cross-sectional schematic view of the waterproof ring of FIG. 3; FIG. 5 is a cross-sectional schematic view of the body of FIG. 1; fig. 6 is a schematic cross-sectional view of the body of fig. 5.

The utility model discloses a cable fixing head, including main part 3, packing nut 6, fastener, waterproof ring 4 and stifle 7, one end of main part 3 is connected with the fastener, the other end of main part 3 and packing nut 6 threaded connection, waterproof ring 4 is connected with main part 3, waterproof ring 4 is installed in the hole of packing nut 6, stifle 7 passes the hole of packing nut 6 and installs in the hole of waterproof ring 4; waterproof circle 4 is close to the one end of compelling tight nut 6, and the surface of waterproof circle 4 is equipped with the boss 42 that is used for with compelling tight nut 6 joint to the removal of waterproof circle 4 in the direction of compelling tight nut 6 height is restricted.

The main body 3 is the main structure of the cable fixing head, a through hole for the cable to pass through is arranged on the main body, and two ends of the main body are respectively connected with the fastening piece and the tightening nut 6.

Preferably, can set up the fastener into standard part hexagon nut 1, keep away from in main part 3 and compel tight nut 6 one section and be provided with the first screw portion of installation hexagon nut 1, hexagon nut 1 is threaded connection with main part 3, reduction in production cost, improvement production efficiency.

The size of the hexagon nut 1 is determined according to the cable diameter suitable for the cable fixing head, and the length of the first thread part is determined according to factors such as the size of locking force required in actual production.

Preferably, an O-ring 2 may be disposed between the main body 3 and the hexagon nut 1, a sealing groove for mounting the O-ring 2 is disposed on an end surface of the main body 3 relatively close to the hexagon nut 1, and a depth of the sealing groove is smaller than a thickness of the O-ring 2.

O type circle 2 installs in the seal groove, because the degree of depth of seal groove is less than O type circle 2's thickness, O type circle 2 expands in axial direction after hexagon nut 1 screws up, has avoided moisture to get into in main part 3, has improved the waterproof performance of cable fixed head.

The through hole on the main body 3 can be a cylindrical hole or a circular truncated cone hole with a certain taper, and the taper of the circular truncated cone hole is determined according to the requirements in actual production, so that the cable fixing head can adapt to the change of the wire diameter of the cable to a certain extent.

The main part 3 is connected with the tightening nut 6 through a second thread part, and the length of the second thread part is determined according to the size of locking force required in actual production.

The pitch of the first threaded portion may be the same as or different from the pitch of the second threaded portion. The number of threads of the first thread part may be the same as or different from the number of threads of the second thread part, and preferably, both the first thread part and the second thread part are single-start threads.

The waterproof ring 4 is installed in the inner hole of the tightening nut 6, preferably, referring to fig. 2, a section of the tightening nut 6 far away from the main body 3 may be provided with a retaining structure on the bottom surface of the inner hole of the tightening nut 6 to prevent the tightening nut 6 from directly contacting the waterproof ring 4 to affect the screwing process of the tightening nut 6.

Preferably, a round corner may be provided between the bottom surface of the inner hole of the packing nut 6 and the side wall surface of the inner hole of the packing nut 6. The round angle design avoids stress concentration caused by vertical connection and improves the structural strength of the packing nut 6; on the other hand, direct contact of the packing nut 6 with the waterproof ring 4 is avoided.

Preferably, the boss 42 may be an annular boss, and an axis of the annular boss coincides with an axis of the waterproof ring 4.

Preferably, the bosses 42 may also be circular-arc-shaped bosses, and a plurality of the bosses 42 are uniformly distributed in the circumferential direction of the waterproof ring 4.

The shape of the boss 42 may be any geometric shape as long as the purpose of restricting the movement of the waterproof ring 4 in the height direction of the packing nut 6 can be achieved.

Preferably, the cross section of the boss 42 is a right trapezoid, one end of the boss 42 close to the main body 3 is an inclined surface, and an included angle between the inclined surface and the axis of the waterproof ring 4 is an acute angle.

In this embodiment, through set up boss 42 on the surface at waterproof circle 4, waterproof circle 4 can with compel tight nut 6 joint, increased waterproof circle 4 and compeled the precompression between tight nut 6 to waterproof circle 4 drops from compeling tight nut 6 in the dismantlement process has been avoided.

On the basis of the above-described embodiment, the protrusion 41 may be provided on one of the end surface of the waterproof ring 4 relatively close to the main body 3 and the end surface of the main body 3 relatively close to the packing nut 6, and the groove 31 for fitting with the protrusion 41 may be provided on the other.

Preferably, an annular groove may be provided on the end face of the body 3 relatively close to the packing nut 6.

Preferably, the cross section of the annular groove can be a right trapezoid, and the width of the bottom surface of the annular groove is smaller than the width of the annular groove at the height of the end surface.

Of course, a plurality of discrete grooves may be provided on the end surface, and the discrete grooves are uniformly distributed in the circumferential direction of the main body 3.

On the basis of the above embodiment, a gasket 5 may be provided on an end surface of the waterproof ring 4 relatively far from the main body 3 so as to prevent the waterproof ring 4 from rotating following the packing nut 6 when the packing nut 6 is screwed.

Preferably, the gasket 5 can be a metal gasket, and has high structural strength and long service life.

On the basis of the above embodiment, in order to reduce the installation time, the thread of the clamping nut 6 for connecting with the main body 3 can be designed into a double-thread, and compared with the existing single-thread, the number of screwing turns required for reaching the same locking position is only half, so that the installation time is effectively reduced, and the installation efficiency is improved. Meanwhile, compared with the continuous increase of the number of threads, the double-thread turning has the advantages of low complexity, easiness in manufacturing and low cost.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

It is right above that the utility model provides a cable fixing head has carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. The cable fixing head is characterized by comprising a main body (3), a packing nut (6), a fastener, a waterproof ring (4) and a blank cap (7), wherein one end of the main body (3) is connected with the fastener, the other end of the main body (3) is in threaded connection with the packing nut (6), the waterproof ring (4) is connected with the main body (3), the waterproof ring (4) is installed in an inner hole of the packing nut (6), and the blank cap (7) penetrates through the inner hole of the packing nut (6) and is installed in the inner hole of the waterproof ring (4);

waterproof circle (4) are close to compel the one end of tight nut (6), the surface of waterproof circle (4) be equipped with be used for with compel boss (42) of tight nut (6) joint, in order to restrict waterproof circle (4) are in compel the removal of tight nut (6) direction of height.

2. Cable fixing head according to claim 1, characterized in that the boss (42) is an annular boss, the axis of which coincides with the axis of the waterproof ring (4).

3. The cable fixing head according to claim 1, characterized in that the bosses (42) are circular-arc-shaped bosses, and a plurality of the bosses (42) are evenly distributed in the circumferential direction of the waterproof ring (4).

4. The cable fixing head according to any one of claims 1 to 3, wherein the cross section of the boss (42) is a right trapezoid, one end of the boss (42) close to the main body (3) is an inclined surface, and an included angle between the inclined surface and the axis of the waterproof ring (4) is an acute angle.

5. The cable fixing head as claimed in claim 4, characterized in that at the end of the clamping nut (6) remote from the main body (3), a retaining structure is provided on the bottom surface of the inner bore of the clamping nut (6).

6. The cable fixing head as claimed in claim 5, characterized in that a fillet is provided between the bottom surface of the inner bore of the clamping nut (6) and the side wall surface of the inner bore of the clamping nut (6).