CN106785593B

CN106785593B - Cable joint structure

Info

Publication number: CN106785593B
Application number: CN201710096631.1A
Authority: CN
Inventors: 黄波
Original assignee: Joint Effort Technology Corp
Current assignee: Joint Effort Technology Corp
Priority date: 2017-02-22
Filing date: 2017-02-22
Publication date: 2022-11-11
Anticipated expiration: 2037-02-22
Also published as: CN106785593A

Abstract

The invention provides a cable joint structure which comprises at least one connecting terminal, an insulator, a main body, a shell, a clamping ring, a sealing ring, a bushing and a sealing plastic tail handle, wherein the insulator is cylindrical, a first through hole penetrating through the insulator is formed in the end face of the insulator, the front end of the connecting terminal is inserted into the first through hole of the insulator, the main body is hollow cylindrical, the insulator is inserted into the front end of an inner hole of the main body, the shell is sleeved on the outer wall of the main body, the clamping ring is clamped between the main body and the shell, the sealing ring is inserted into the inner hole of the main body, a second through hole is formed in the end face of the sealing ring, the rear end of the connecting terminal is inserted into the second through hole of the sealing ring, the bushing is inserted into the rear end of the main body and sleeved on the sealing ring, and the sealing plastic tail handle is connected with the tail end of the main body. The parts are few, and the installation process is simple.

Description

Cable joint structure

Technical Field

The invention relates to the technical field of transmission line connectors, in particular to a cable connector structure.

Background

Cable joints are generally required to have waterproof properties. The structure of a cable joint commonly used at present is shown in fig. 1, the cable joint includes an inner conductor 1, an insulator 2, a main body 3, a threaded sleeve 4, a snap ring 5, a housing 6, a first seal ring 7, a nut 8, a second seal ring 9 and a gasket 10, the inner conductor 1 is sleeved in the insulator 2, the insulator 2 is sleeved in the main body 3, the threaded sleeve 4 is sleeved on the outer side surface of the front end of the main body 3, the snap ring 5 is clamped between the main body 3 and the threaded sleeve 4, the front end of the housing 6 is in threaded connection with the outer side surface of the tail end of the main body 3, the first seal ring 7 is located between the housing 6 and the main body 3 to play a sealing role, the rear end of the main body 3 is in threaded connection with the nut 8, the second seal ring 9 is arranged between the nut 8 and the main body 3, and the front side surface and the rear side surface of the second seal ring 9 are both connected with the gasket 10.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the cable joint structure is simple in process and low in cost.

In order to solve the technical problems, the invention adopts the technical scheme that:

the utility model provides a cable joint structure, includes connecting terminal, insulator, main part, shell, snap ring, sealing washer, bush, seals and moulds the tail handle, connecting terminal's quantity is at least one, the appearance of insulator is cylindrical, be equipped with the first through-hole that runs through on the terminal surface of insulator, connecting terminal's front end is pegged graft in the first through-hole of insulator, the appearance of main part is hollow circular cylinder, the insulator is pegged graft the front end of the hole of main part, the shell cover is in on the outer wall of main part, the snap ring screens is in the main part with between the shell, the sealing washer is pegged graft in the hole of main part, be equipped with the second through-hole on the terminal surface of sealing washer, connecting terminal's rear end is pegged graft in the second through-hole of sealing washer, the bush is pegged graft on the rear end of main part, and is overlapped on the sealing washer, seal mould the tail handle with the end connection of main part.

The invention has the beneficial effects that: the front end of the connecting terminal is inserted on the insulator, the rear end of the connecting terminal is inserted on the sealing ring, the connecting terminal and the insulator are tightly pressed in the main body by the bushing, and the insulator, the sealing ring and the bushing are all matched and connected with the inner hole of the main body, so that the sealing performance is good, the connecting structure is simple and stable, the number of parts is obviously reduced, the processing manufacturability is good, the working time required by processing is short, and the processing efficiency is high; the shell is connected with the main body in a clamping way through the clamping ring and is sleeved on the main body, and the connecting structure is reasonable and stable; the rear end of the main body is connected with the transmission line through the plastic sealing tail handle, and the plastic sealing tail handle has the advantages of stable connection structure, good sealing performance and good fatigue resistance; the number of parts is obviously reduced, the part connecting structure is more compact, the length is shorter, and materials are saved.

Drawings

FIG. 1 is a schematic view of a cable joint structure in the prior art;

FIG. 2 is a schematic view of a cable joint structure according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 in accordance with an embodiment of the present invention;

FIG. 4 is an exploded view of a cable splice of an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a connection terminal according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of an insulator according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a seal ring according to an embodiment of the present invention;

FIG. 8 is a schematic view of a bushing according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a main body according to an embodiment of the present invention.

Description of reference numerals:

1. an inner conductor; 2. an insulator; 3. a main body; 4. a threaded sleeve; 5. a snap ring; 6. a housing;

7. a first seal ring; 8. a nut; 9. a second seal ring; 10. a gasket;

11. a connection terminal; 12. an insulator; 13. a main body; 14. a housing; 15. a snap ring;

16. a seal ring; 17. a bushing; 18. sealing the plastic tail handle; 19. a transmission line;

111. a plug-in part; 112. a connecting portion; 113. a first flange; 114. a second flange;

115. an arc-shaped notch; 121. a first through hole; 131. a step surface; 132. a conical surface;

133. a third flange; 134. a fourth flange; 135. a third through hole; 136. a second groove;

141. a first groove; 142. a thread face; 161. a second through hole; 162. an annular groove;

171. and a fourth via.

Detailed Description

In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

The most key concept of the invention is as follows: be equipped with the second through-hole with connecting terminal shape adaptation on the sealing washer, the bush compresses tightly sealing washer, connecting terminal and insulator and fixes in the main part, makes part quantity few, and the leakproofness is good, and processing technology is good, and production efficiency is high.

Referring to fig. 2 to 9, the present invention provides a cable joint structure, including a connection terminal 11, an insulator 12, a main body 13, a housing 14, a snap ring 15, a seal ring 16, a bushing 17, and a seal molding tail handle 18, where the number of the connection terminal 11 is at least one, the insulator 12 is cylindrical, a first through hole 121 penetrating through the end surface of the insulator 12 is provided, the front end of the connection terminal 11 is inserted into the first through hole 121 of the insulator 12, the main body 13 is hollow cylindrical, the insulator 12 is inserted into the front end of the inner hole of the main body 13, the housing 14 is sleeved on the outer wall of the main body 13, the snap ring 15 is clamped between the main body 13 and the housing 14, the seal ring 16 is inserted into the inner hole of the main body 13, the end surface of the seal ring 16 is provided with a second through hole 161, the rear end of the connection terminal 11 is inserted into the second through hole 161 of the seal ring 16, the bushing 17 is inserted into the rear end of the main body 13 and sleeved on the seal ring 16, and the seal molding tail handle 18 is connected to the tail end of the main body 13.

Further, a step surface 131 is provided at the front end of the inner hole of the main body 13, and the front end surface of the insulator 12 contacts with the step surface 131.

As is apparent from the above description, the inner hole of the body 13 is provided with a step surface 131 which is in surface contact with the front side of the insulator 12 for limiting the mounting position of the insulator 12 in the body 13.

Further, the connection terminal 11 includes a columnar insertion portion 111 and a hollow connection portion 112, the insertion portion 111 is located at the front end of the connection terminal 11, the connection portion 112 is located at the rear end of the connection terminal 11, the insertion portion 111 is inserted into the first through hole 121 of the insulator 12, the connection portion 112 is inserted into the second through hole 161 of the sealing ring 16, and the hollow connection portion 112 is used for inserting the external transmission line 19.

As can be seen from the above description, the transmission line 19 is inserted into the hollow connecting portion 112 of the connecting terminal 11 and soldered on the connecting terminal 11 by solder, or connected to the connecting terminal 11 by pressing, the insertion portion 111 is inserted into the first through hole 121 of the insulator 12, and the connecting portion 112 is inserted into the sealing ring 16, so as to perform an effective insulation function, and effectively maintain the insulation between the adjacent connecting terminals 11.

Furthermore, a first flange 113 is disposed at a joint of the insertion portion 111 and the connection portion 112, a second flange 114 is disposed on an outer circumferential surface of the insertion portion 111, a cross-sectional shape of the first flange 113 is rectangular, a cross-sectional shape of the second flange 114 is triangular, and a front end surface of the first flange 113 contacts with a rear end surface of the insulator 12.

As is apparent from the above description, the connection terminals 11 are limited in their depth of insertion into the insulator 12 by the first flange 113, and also contribute to maintaining the regularity among the plurality of connection terminals 11; the second flange 114 of the connection terminal 11 is fittingly connected with the first through hole 121 of the insulator 12, effectively clamping the connection terminal 11 on the insulator 12; the cross-sectional shape of the second flange 114 is triangular, and the direction of the inclination of the triangle is toward the rear end of the connection terminal 11, so that the force required for inserting the connection terminal 11 into the insulator 12 is much smaller than the force required for pulling the connection terminal 11 out of the insulator 12, the structure is reasonable, the connection structure between the connection terminal 11 and the insulator 12 is fastened, and the connection terminal 11 is not easy to be pulled out of the insulator 12.

Further, an arc notch 115 is formed at the tail of the hollow connecting portion 112 of the connecting terminal 11, and the arc notch 115 faces the outer circumferential surface of the insulator 12.

As can be seen from the above description, the hollow connecting portion 112 of the connecting terminal 11 is provided with the arc notch 115, and the arc notch 115 faces the outer circumferential surface of the insulator 12, so that the arc notch 115 on the connecting portion 112 contacts the sealing ring 16, thereby effectively increasing the friction force between the connecting terminal 11 and the sealing ring 16, and ensuring the insulation between the adjacent connecting terminals 11.

Further, the rear end of the inner hole of the main body 13 is provided with a tapered surface 132, and the bushing 17 is inserted on the tapered surface 132 of the main body 13.

As can be seen from the above description, the bush 17 is assembled and connected with the tapered surface 132 on the inner hole of the main body 13, so that the connection structure between the bush 17 and the main body 13 is firm and not easy to loosen, and the installation process is simple, and the installation is quick and convenient.

Further, the cross-sectional shape of the bushing 17 is L-shaped, an annular groove 162 connected with the end surface is formed on the outer circular surface of the rear end of the seal ring 16, and the bushing 17 is sleeved on the annular groove 162 of the seal ring 16.

As can be seen from the above description, the L-shaped bushing 17 is sleeved in the annular groove 162 of the sealing ring 16, so as to realize the matching connection between the bushing 17 and the sealing ring 16, the bushing 17 presses the sealing ring 16 and the insulator 12 into the inner hole of the main body 13, and the bushing 17 limits the backward movement of the sealing ring 16.

Further, a third flange 133 and a fourth flange 134 which are sequentially arranged forward are arranged at the rear end of the main body 13, a third through hole 135 is formed in the side wall of the main body 13 at the fourth flange 134, and the plastic sealing tail handle 18 wraps the third flange 133 and the fourth flange 134 and is poured into the third through hole 135.

From the above description, the third flange 133 is closer to the rear end of the main body 13 than the fourth flange 134, and the plastic sealing tail handle 18 covers the third flange 133 and the fourth flange 134, so that the tightness of the connection between the main body 13 and the plastic sealing tail handle 18 is greatly increased, and the service life and the firmness of the joint are improved; the side wall of the main body 13 at the position of the fourth flange 134 is provided with a third through hole 135, the plastic sealing tail handle 18 is processed in an injection molding mode, and when the plastic sealing tail handle 18 is subjected to injection molding, molten materials are poured into the third through hole 135 at the same time, so that the connection stability between the main body 13 and the plastic sealing tail handle 18 is enhanced, and the service life is prolonged.

Further, a first groove 141 is formed in the inner side wall of the housing 14, a second groove 136 is formed in the outer side wall of the main body 13, and the snap ring 15 is clamped in the first groove 141 and the second groove 136.

As can be seen from the above description, the snap ring 15 is clamped between the first groove 141 of the housing 14 and the second groove 136 of the main body 13, and the structure is reasonable and stable.

Further, a fourth through hole 171 is formed in the bushing 17, and the diameter of the fourth through hole 171 is matched with the diameter of an external transmission line.

As can be seen from the above description, the peripheral transmission line penetrates through the fourth through hole 171 of the bushing 17, so that the transmission line is fixed, the shaking of the transmission line is reduced, and the transmission line can restrict the rotation or movement of the bushing 17, so that the structure is more stable.

Further, a thread surface 142 is provided on the outer circumferential surface of the housing 14.

As can be seen from the above description, the outer circumferential surface of the housing 14 is provided with a threaded surface 142 to facilitate the connection between the cable connector and the external device.

Referring to fig. 2 to 9, a first embodiment of the present invention is:

a cable joint structure comprises a connecting terminal 11, an insulator 12, a main body 13, a shell 14, a snap ring 15, a sealing ring 16, a bushing 17 and a plastic sealing tail handle 18, wherein the number of the connecting terminal 11 is at least one, the insulator 12 is cylindrical, a first through hole 121 penetrating through the insulator 12 is formed in the end face of the insulator 12, the front end of the connecting terminal 11 is inserted into the first through hole 121 of the insulator 12, the main body 13 is hollow cylindrical, the insulator 12 is inserted into the front end of an inner hole of the main body 13, a step surface 131 is formed in the front end of the inner hole of the main body 13, the front end face of the insulator 12 is in contact with the step surface 131, the shell 14 is sleeved on the outer wall of the main body 13, the snap ring 15 is clamped between the main body 13 and the shell 14, the sealing ring 16 is inserted into the inner hole of the main body 13, a second through hole 161 is formed in the end face of the sealing ring 16, the rear end of the connecting terminal 11 is inserted into the second through hole 161 of the sealing ring 16, the bushing 17 is inserted into the rear end of the main body 13 and sleeved on the sealing ring 16, and the plastic sealing tail handle 18 is connected with the main body 13;

the connecting terminal 11 comprises a columnar plug part 111 and a hollow connecting part 112, the plug part 111 is positioned at the front end of the connecting terminal 11, the connecting part 112 is positioned at the rear end of the connecting terminal 11, the plug part 111 is plugged in the first through hole 121 of the insulator 12, the connecting part 112 is plugged in the second through hole 161 of the sealing ring 16, and the hollow connecting part 112 is used for plugging an external transmission line 19; a first flange 113 is arranged at the joint of the insertion part 111 and the connecting part 112, a second flange 114 is arranged on the outer circumferential surface of the insertion part 111, the cross section of the first flange 113 is rectangular, the cross section of the second flange 114 is triangular, and the front end face of the first flange 113 is in contact with the rear end face of the insulator 12; an arc notch 115 is arranged at the tail part of the hollow connecting part 112 of the connecting terminal 11, and the arc notch 115 faces the outer circular surface of the insulator 12;

the rear end of the inner hole of the main body 13 is provided with a conical surface 132, and the bushing 17 is inserted on the conical surface 132 of the main body 13; the cross section of the bushing 17 is L-shaped, an annular groove 162 connected with an end face is formed in the outer circular surface of the rear end of the sealing ring 16, and the bushing 17 is sleeved on the annular groove 162 of the sealing ring 16; the rear end of the main body 13 is provided with a third flange 133 and a fourth flange 134 which are sequentially arranged forwards, a third through hole 135 is formed in the side wall of the main body 13 at the fourth flange 134, and the plastic sealing tail handle 18 wraps the third flange 133 and the fourth flange 134 and is poured into the third through hole 135; a first groove 141 is formed in the inner side wall of the shell 14, a second groove 136 is formed in the outer side wall of the main body 13, the snap ring 15 is clamped in the first groove 141 and the second groove 136, and a threaded surface 142 is formed on the outer circumferential surface of the shell 14; the bushing 17 is provided with a fourth through hole 171, and the diameter of the fourth through hole 171 is matched with the diameter of an external transmission line.

When the device is installed, the transmission line 19 is welded on the connecting terminal 11, the connecting terminal 11 is inserted into the second through hole 161 of the sealing ring 16 and the first through hole 121 of the insulator 12, then the insulator 12 is inserted into the main body 13, the positions of the insulator 12 and the connecting terminal 11 are corrected, the position of the sealing ring 16 is corrected, and then the bushing 17 is pressed between the main body 13 and the sealing ring 16; the snap ring 15 is clamped on the main body 13, and the shell 14 is sleeved on the main body 13; the injection molding tail handle is integrally injected at the joint of the transmission line 19 and the main body 13 in an injection molding mode.

In summary, in the cable joint structure provided by the present invention, the connection terminals 11 and the insulator 12 are locked and connected by the second flange 114, the multiple connection terminals 11 ensure mutual sealing performance by the seal ring 16 and the insulator 12, the seal ring 16, and the bushing 17 are all connected with the inner hole of the main body 13 in a matching manner, and the insulator 12 and the seal ring 16 are pressed in the main body 13 by the bushing 17, the main body 13 is connected with the external transmission line 19 by the plastic-sealed tail handle 18, and the main body 13 is provided with the third flange 133, the fourth flange 134, and the third through hole 135 for enhancing the connection tightness between the main body 13 and the plastic-sealed tail handle 18.

The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent modifications made by the present invention and the contents of the accompanying drawings, which are directly or indirectly applied to the related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a cable joint structure, its characterized in that, moulds the tail handle including connecting terminal, insulator, main part, shell, snap ring, sealing washer, bush, seal, connecting terminal's quantity is at least one, the appearance of insulator is cylindrical, be equipped with the first through-hole that runs through on the terminal surface of insulator, the front end of connecting terminal is pegged graft in the first through-hole of insulator, the appearance of main part is hollow circular cylinder, the insulator is pegged graft in the front end of the hole of main part, the shell cover is in on the outer wall of main part, the snap ring screens are in the main part with between the shell, the sealing washer is pegged graft in the hole of main part, be equipped with the second through-hole on the terminal surface of sealing washer, the rear end of connecting terminal is pegged graft in the second through-hole of sealing washer, the bush is pegged graft on the rear end of main part, the rear end of sealing washer is equipped with a conical surface, the bush cover is in on the conical surface, seal mould the tail handle with the tail end connection of main part.

2. The cable joint structure of claim 1, wherein the front end of the inner bore of the main body is provided with a step surface, and the front end surface of the insulator contacts with the step surface.

3. The cable joint structure according to claim 1, wherein the connection terminal includes a cylindrical insertion portion and a hollow connection portion, the insertion portion is located at a front end of the connection terminal, the connection portion is located at a rear end of the connection terminal, the insertion portion is inserted into the first through hole of the insulator, the connection portion is inserted into the second through hole of the sealing ring, and an external transmission line is inserted into the hollow connection portion.

4. The cable joint structure according to claim 3, wherein a first flange is provided at a joint of the plug portion and the connecting portion, a second flange is provided on an outer circumferential surface of the plug portion, a cross-sectional shape of the first flange is rectangular, a cross-sectional shape of the second flange is triangular, and a front end surface of the first flange is in surface contact with a rear end surface of the insulator.

5. The cable joint structure according to claim 3, wherein the tail portion of the hollow connecting portion of the connecting terminal is provided with an arc-shaped notch, and the arc-shaped notch faces the outer circumferential surface of the insulator.

6. The cable joint structure of claim 1, wherein the rear end of the inner hole of the main body is provided with a tapered surface, and the bushing is inserted into the tapered surface of the main body.

7. The cable joint structure according to claim 1 or 6, wherein the cross-sectional shape of the bushing is an L-shape, an annular groove connected to the end surface is formed on an outer circumferential surface of the rear end of the sealing ring, and the bushing is fitted over the annular groove of the sealing ring.

8. The cable joint structure of claim 1, wherein the rear end of the main body is provided with a third flange and a fourth flange which are sequentially arranged forward, the main body is provided with a third through hole on a sidewall of the fourth flange, and the plastic sealing tail handle covers the third flange and the fourth flange and is poured into the third through hole.

9. The cable joint structure of claim 1, wherein a first groove is formed on an inner sidewall of the housing, a second groove is formed on an outer sidewall of the main body, and the snap ring is locked in the first groove and also locked in the second groove.

10. The cable joint structure of claim 1, wherein the bushing has a fourth through hole, and a diameter of the fourth through hole is adapted to a diameter of an external transmission line.