CN215184757U - Waterproof plug and sealed wiring device - Google Patents

Abstract

The utility model provides a waterproof plug, which comprises a compression nut, a cable sleeve, a waterproof contact pin, a telescopic cable and an external cable; one end of the compression nut is open and is used for being in threaded connection with the external thread, and the other end of the compression nut is a pipe barrel; the pipe barrel is movably connected with the cable sleeve, so that the compression nut can rotate around the axis of the pipe barrel relative to the cable sleeve; waterproof contact pin is connected to the one end of flexible cable, and the other end setting of flexible cable is in the bobbin, and external cable is located the cable cover intraductally, and the one end of external cable is located the bobbin and is connected with flexible cable electricity. The utility model discloses a waterproof plug, because gland nut's one end is the bobbin, the gap of no seepage between external cable and the gland nut, and gland nut can be rotatory for the cable sleeve pipe, then gland nut can rotate on the one hand and realize the installation, and on the other hand and external cable between seamless have reduced the risk of seepage. On this basis, the utility model also provides a sealed termination.

Description

Waterproof plug and sealed wiring device

Technical Field

The utility model relates to an electron electrical apparatus technical field particularly, relates to a waterproof plug and sealed termination.

Background

Fig. 1 is a schematic structural view of a waterproof joint in the prior art. As shown in fig. 1, the waterproof connector of the battery box of the underwater robot generally comprises a waterproof socket 1, a compression nut 2, a waterproof pin 4, a first sealing ring 3, a second sealing ring 5, a folding-proof protective sleeve 6 and a cable sleeve 7.

Wherein, waterproof socket 1 and gland nut 2 cooperation are equipped with first sealing washer 3 between these two. The waterproof socket 1 is internally provided with a cavity, the waterproof contact pin 4 is arranged in the cavity, the outer circumferential surface of the waterproof contact pin 4 is provided with an annular groove for placing a second sealing ring 5, the second sealing ring 5 is arranged in the annular groove, the anti-folding protective sleeve 6 is connected with the waterproof contact pin 4 and penetrates out of the compression nut 2, and the anti-folding protective sleeve 6 is in a spiral shape with unequal pitch design; the cable bushing 7 is connected with the anti-folding protective sheath 6.

However, there is a gap between the anti-folding protective sleeve 6 and the compression nut 2 of the waterproof joint, and the waterproof effect is difficult to be ensured.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a waterproof plug and sealed termination help solving above-mentioned technical problem.

The utility model discloses a realize like this:

a waterproof plug comprises a compression nut, a cable sleeve, a waterproof contact pin, a telescopic cable and an external cable.

One end of the compression nut is open and is used for being in threaded connection with the external thread, and the other end of the compression nut is a pipe barrel.

The barrel is movably connected with the cable sleeve, so that the compression nut can rotate around the axis of the barrel relative to the cable sleeve.

One end of the telescopic cable is connected with the waterproof contact pin, the other end of the telescopic cable is arranged in the pipe barrel, the external cable is positioned in the cable sleeve, and one end of the external cable is positioned in the pipe barrel and is electrically connected with the telescopic cable.

When the waterproof plug is used, firstly, the compression nut can rotate around the axis of the pipe barrel relative to the cable sleeve, so that the compression nut can be screwed with the waterproof socket through the rotation operation of the compression nut, and at the moment, the sealing waterproof connection between the screwed end and the waterproof socket is ensured to be realized easily. Secondly, because the other end of the gland nut is provided with the pipe barrel, and the pipe barrel and the gland nut body are integrally arranged, external water medium cannot permeate through a gap between the gland nut and the cable sleeve. And preventing the water medium from penetrating into the water-proof socket in the pipe barrel, which is easier to realize. In addition, the waterproof contact pin is connected with an external cable through a telescopic cable, so that the waterproof plug and the waterproof socket can be conveniently connected and detached.

Furthermore, a pipe neck is arranged at one end of the pipe barrel, which is connected with the cable sleeve, a ring platform is arranged on the side wall of the pipe neck, and a ring groove is arranged on the inner wall of the cable sleeve; the ring platform is located in the ring groove. The technical effects are as follows: the structure of the pipe neck, the ring platform and the ring groove not only forms the rotary connection of the compression nut and the cable sleeve. In addition, the probability of water seepage can be reduced by the aid of the connecting surfaces.

Furthermore, a compression spring and a built-in cable are arranged on the telescopic cable; the built-in cable is positioned in the compression spring, two ends of the compression spring are respectively and fixedly connected with the built-in cable, and the length of the built-in cable between two end points of the compression spring is greater than that of the compression spring; one end of the built-in cable is connected with the waterproof contact pin, and the other end of the built-in cable is connected with the external cable. The technical effects are as follows: the compression spring and the built-in cable realize the stretching and shrinking functions of the front-end waterproof contact pin, the waterproof contact pin can be pulled out and inserted into the waterproof socket before installation, and the built-in cable is shortened under the acting force of the compression spring after installation, so that the tight connection between the waterproof contact pin and the waterproof socket is ensured.

Further, one end of the compression spring close to the cable sleeve is fixed in the barrel. The technical effects are as follows: compression spring's one end fixed mounting can improve the operating efficiency of waterproof contact pin, has avoided the external cable of tractive in the cable sleeve pipe.

Further, a sealing rubber ring is arranged in the pipe barrel, the inner wall of the sealing rubber ring is attached to the external cable, and the outer wall of the sealing rubber ring is attached to the pipe barrel. The technical effects are as follows: the sealing rubber ring can block the water medium from the cable sleeve.

The utility model provides a sealed termination, its includes waterproof socket and foretell waterproof plug, waterproof socket is provided with the slot, the slot is used for putting into waterproof contact pin, waterproof socket's outer wall is provided with the external screw thread, the external screw thread with gland nut meshing.

Furthermore, a first annular sealing ring is arranged on the inner wall of the slot, the outer annular surface of the first annular sealing ring is arranged in the annular groove on the inner wall of the slot, and the inner annular surface of the first annular sealing ring is connected with the waterproof contact pin in an interference fit manner. The technical effects are as follows: the first annular sealing ring forms a waterproof isolation defense line on the inner walls of the waterproof contact pin and the slot.

Further, the first annular sealing ring is bonded in the slot. The technical effects are as follows: the bonding mode of first ring type seal can not cause first ring type seal's deformation, guarantees its waterproof sealing effect.

Further, the outer wall of the waterproof socket is further provided with an annular base and a second annular sealing ring, and the second annular sealing ring is located between the annular base and the compression nut. The technical effects are as follows: the second annular seal ring forms another waterproof isolation line between the annular base and the compression nut.

Further, the waterproof socket is of a transparent structure. The technical effects are as follows: the waterproof socket with the transparent structure design can be observed at any time, and installation personnel can check the connection state and the waterproof isolation condition of the internal circuit of the waterproof socket.

The utility model has the advantages that:

the utility model discloses a waterproof plug and sealed termination, because gland nut's one end is the bobbin, the gap of no seepage between external cable and the gland nut, and gland nut can be rotatory for the cable sleeve pipe, then gland nut can rotate on the one hand and realize the installation, and on the other hand and external cable are seamless, have reduced the risk of seepage.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of a prior art watertight connector;

fig. 2 is a schematic view of a first plane structure of the waterproof plug provided by the present invention;

fig. 3 is a schematic view of a second plane structure of the waterproof plug provided by the present invention;

fig. 4 is a schematic plan view of the sealing wiring device provided by the present invention;

fig. 5 is a schematic plan view of a waterproof socket in the sealing and wire-bonding device according to the present invention.

Icon: 1-waterproof socket; 11-a slot; 111-a first annular sealing ring; 12-a ring-shaped base; 13-a second annular sealing ring; 2-pressing the nut; 21-a tube; 211-neck; 212-ring table; 213-sealing rubber ring; 3-a first sealing ring; 4-waterproof pin insertion; 5-a second sealing ring; 6-anti-folding protective sleeve; 7-a cable bushing; 8-a retractable cable; 81-compression spring; 82-built-in cable; 9-external connection of cable.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Fig. 2 is a schematic view of a first plane structure of the waterproof plug provided by the present invention; fig. 3 is a schematic view of a second plane structure of the waterproof plug provided by the present invention. Referring to fig. 2 and 3, the present embodiment provides a waterproof plug, which includes a compression nut 2, a cable sleeve 7, a waterproof pin 4, a retractable cable 8 and an external cable 9.

One end of the compression nut 2 is open and is used for being in threaded connection with an external thread, and the other end of the compression nut 2 is a pipe barrel 21; the tube 21 is movably connected with the cable sleeve 7, so that the compression nut 2 can rotate around the axis of the tube 21 relative to the cable sleeve 7; one end of the telescopic cable 8 is connected with the waterproof contact pin 4, the other end of the telescopic cable 8 is arranged in the tube 21, the external cable 9 is positioned in the cable sleeve 7, and one end of the external cable 9 is positioned in the tube 21 and is electrically connected with the telescopic cable 8.

Further, as shown in fig. 2 and 3, a neck 211 is disposed at one end of the tube 21 connected to the cable sleeve 7, a ring platform 212 is disposed on a side wall of the neck 211, and a ring groove is disposed on an inner wall of the cable sleeve 7; the land 212 is located in the ring groove. The arrangement of the neck 211, the collar 212 and the ring groove now forms not only a rotary connection of the gland nut 2 to the cable bushing 7. In addition, the probability of water seepage can be reduced by the aid of the connecting surfaces.

In the above structure, the flexible cable 8 may be a conductive wire having elasticity, wherein the elasticity may be exhibited by a rubber hose, or a structure of a coil spring may be used.

In the above structure, the tube 21 of the compression nut 2 is integrally formed with the body of the compression nut 2, preventing a gap from being present therebetween.

The working principle and the operation method of the waterproof plug of the embodiment are as follows:

when the waterproof plug is used, firstly, the compression nut 2 can rotate around the axis of the pipe barrel 21 relative to the cable sleeve 7, so that the compression nut 2 can be screwed with the waterproof socket 1 through the rotation operation of the compression nut 2, and at the moment, the sealing waterproof connection between the screwed end and the waterproof socket 1 is ensured to be realized easily. Secondly, because the other end of the gland nut 2 is provided with the pipe barrel 21, and the pipe barrel 21 and the gland nut 2 body are integrally arranged, the external water medium cannot permeate through the gap between the gland nut 2 and the cable sleeve 7. While preventing the penetration and flow of the aqueous medium into the watertight socket 1 in the barrel 21 is easier to achieve. In addition, the waterproof contact pin 4 is connected with the external cable 9 through the telescopic cable 8, so that the waterproof plug and the waterproof socket 1 can be conveniently connected and detached.

In one of the preferred embodiments, further, as shown in fig. 2 and 3, the retractable cable 8 is provided with a compression spring 81 and an internal cable 82; the built-in cable 82 is positioned in the compression spring 81, two ends of the compression spring 81 are respectively and fixedly connected with the built-in cable 82, and the length of the built-in cable 82 between two end points of the compression spring 81 is greater than that of the compression spring 81; one end of the built-in cable 82 is connected with the waterproof contact pin 4, and the other end of the built-in cable 82 is connected with the external cable 9. At this time, the length of the compression spring 81 can be increased by pulling the retractable cable 8, and meanwhile, since the length of the built-in cable 82 between the compression springs 81 is greater than that of the compression spring 81, the waterproof pin 4 can be far away from the compression nut 2, so that an operator can conveniently insert the waterproof pin 4 into the waterproof socket 1. After the installation is finished, the telescopic cable 8 is automatically shortened under the acting force of the compression spring 81, and the installation space is not occupied to influence the conductive connection between the waterproof contact pin 4 and the waterproof socket 1.

Further, as shown in fig. 2 and 3, one end of the compression spring 81 near the cable sleeve 7 is fixed in the barrel 21. At this time, one end of the compression spring 81 is fixedly installed, so that the operation efficiency of the waterproof contact pin 4 can be improved, and the external cable 9 in the cable sleeve 7 is prevented from being pulled.

In one of the preferred embodiments, further, as shown in fig. 2 and 3, a sealing rubber ring 213 is disposed in the tube 21, an inner wall of the sealing rubber ring 213 fits the circumscribed cable 9, and an outer wall of the sealing rubber ring 213 fits the tube 21 for blocking the aqueous medium from the cable sleeve 7.

Fig. 4 is a schematic plan view of the sealing wiring device provided by the present invention; fig. 5 is a schematic plan view of the waterproof socket 1 in the sealing and wiring device according to the present invention. Referring to fig. 4 and 5, the present embodiment provides a sealed wiring device, which includes a waterproof socket 1 and the waterproof plug of any one of the embodiments, where the waterproof socket 1 is provided with a slot 11, the slot 11 is used for placing the waterproof pin 4, and an external thread is provided on an outer wall of the waterproof socket 1, and the external thread is engaged with the compression nut 2.

In one preferred embodiment, as shown in fig. 4 and 5, a first annular sealing ring 111 is disposed on an inner wall of the insertion groove 11, an outer annular surface of the first annular sealing ring 111 is disposed in a ring groove on the inner wall of the insertion groove 11, and an inner annular surface of the first annular sealing ring 111 is connected with the waterproof insertion pin 4 in an interference fit manner. At this time, the first ring-shaped sealing ring 111 forms a waterproof isolation line between the waterproof pin 4 and the inner wall of the socket 11.

Further, as shown in fig. 4 and 5, the first annular sealing ring 111 is adhered to the insertion groove 11. This bonding mode can not cause the deformation of first ring seal 111, guarantees its waterproof sealing effect.

In one of the preferred embodiments, further, as shown in fig. 4 and 5, the outer wall of the waterproof socket 1 is further provided with an annular base 12 and a second annular sealing ring 13, and the second annular sealing ring 13 is located between the annular base 12 and the compression nut 2. At this time, the second annular seal ring 13 forms another waterproof isolation line between the annular base 12 and the gland nut 2.

In one of the preferred embodiments, further, as shown in fig. 4 and 5, the waterproof socket 1 is a transparent structure. The waterproof socket 1 with the transparent structure design can be observed at any time, and installation personnel can check the connection state and the waterproof isolation condition of the internal circuit of the socket.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A waterproof plug is characterized by comprising a compression nut (2), a cable sleeve (7), a waterproof contact pin (4), a telescopic cable (8) and an external cable (9);

one end of the compression nut (2) is open and is used for being in threaded connection with the external thread, and the other end of the compression nut (2) is a pipe barrel (21);

the tube (21) is movably connected with the cable sleeve (7) so that the compression nut (2) can rotate around the axis of the tube (21) relative to the cable sleeve (7);

one end of the telescopic cable (8) is connected with the waterproof contact pin (4), the other end of the telescopic cable (8) is arranged in the pipe barrel (21), the external cable (9) is positioned in the cable sleeve (7), and one end of the external cable (9) is positioned in the pipe barrel (21) and is electrically connected with the telescopic cable (8).

2. The waterproof plug according to claim 1, characterized in that the end of the barrel (21) connected to the cable sleeve (7) is provided with a neck (211), the side wall of the neck (211) is provided with a ring stand (212), and the inner wall of the cable sleeve (7) is provided with a ring groove; the land (212) is located in the ring groove.

3. The waterproof plug according to claim 1, characterized in that a compression spring (81) and a built-in cable (82) are provided on the telescopic cable (8);

the built-in cable (82) is positioned in the compression spring (81), two ends of the compression spring (81) are respectively and fixedly connected with the built-in cable (82), and the length of the built-in cable (82) between two end points of the compression spring (81) is greater than that of the compression spring (81);

one end of the built-in cable (82) is connected with the waterproof contact pin (4), and the other end of the built-in cable (82) is connected with the external cable (9).

4. A water-proof plug as claimed in claim 3, characterised in that the compression spring (81) is fixed in the barrel (21) near one end of the cable sleeve (7).

5. The waterproof plug according to claim 1, characterized in that a sealing rubber ring (213) is arranged in the tube (21), the inner wall of the sealing rubber ring (213) fits the circumscribed cable (9), and the outer wall of the sealing rubber ring (213) fits the tube (21).

6. A sealed termination, characterized by, including waterproof socket (1) and according to the waterproof plug of any one of claims 1 ~ 5, waterproof socket (1) is provided with slot (11), slot (11) are used for putting into waterproof contact pin (4), the outer wall of waterproof socket (1) is provided with the external screw thread, the external screw thread with gland nut (2) meshing.

7. The sealing wiring device as claimed in claim 6, characterized in that the inner wall of the slot (11) is provided with a first annular sealing ring (111), the outer annular surface of the first annular sealing ring (111) is arranged in the annular groove of the inner wall of the slot (11), and the inner annular surface of the first annular sealing ring (111) is connected with the waterproof insertion pin (4) in an interference fit manner.

8. The sealed wiring device of claim 7, wherein the first annular sealing ring (111) is bonded within the socket (11).

9. The sealed wiring device according to claim 6, characterized in that the outer wall of the watertight socket (1) is further provided with an annular base (12) and a second annular sealing ring (13), the second annular sealing ring (13) being located between the annular base (12) and the gland nut (2).

10. The sealed wiring device according to claim 6, characterized in that the waterproof receptacle (1) is of transparent construction.

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