CN216929086U

CN216929086U - Waterproof plug and socket assembly and electrical equipment comprising same

Info

Publication number: CN216929086U
Application number: CN202123408333.2U
Authority: CN
Inventors: 不公告发明人
Original assignee: Quantaeye Beijing Technology Co ltd
Current assignee: Quantaeye Beijing Technology Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-07-08
Anticipated expiration: 2031-12-31

Abstract

The application provides a waterproof plug and socket assembly and electrical equipment comprising the same. This waterproof plug and socket subassembly includes socket (S) and plug (P), socket (S) is including female core (13) and female core seat (11), plug (P) is including contact pin (3) and contact pin seat (4), female core (13) are fixed in female core seat (11), contact pin (3) are fixed in contact pin seat (4), contact pin (3) can be followed axial (A) of plug (P) inserts in female core (13), female core seat (11) and/or it presses the passageway to have the row on contact pin seat (4), plug (P) inserts the in-process of socket (S), female core seat with gas between the contact pin seat can pass through it arrives to press the passageway arrange female core seat with place outside the contact pin seat. The electrical equipment comprises the plug and socket assembly.

Description

Waterproof plug and socket assembly and electrical equipment comprising same

Technical Field

The application relates to the technical field of connection structures of electrical equipment, in particular to a waterproof plug and socket assembly and electrical equipment comprising the same.

Background

When an electrical connection structure such as a cable of an electrical apparatus is applied to underwater or wet environments, the waterproof capability of the connection structure is greatly examined.

In the connection structure including plug and socket for example, in order to strengthen waterproof effect, current scheme usually can set up the sealing washer in the junction of plug and socket, perhaps pours sealed glue after the grafting is accomplished and fills the gap between plug and socket, improves waterproof effect.

The scheme of pouring sealant after the plugging is finished can fix the connection form of the plug and the socket, so that the plugging is inconvenient and the connection state is changed.

Due to the adoption of the scheme of the sealing ring, in the process of inserting the plug into the socket, the inner space of the socket and the insertion surface of the plug (or the inner space of the plug and the surface of the socket) form a closed space. The plug insertion process is equivalent to the compression process of air in the socket, and the plug insertion is inconvenient. Even after forced insertion, the air trapped within the jack can also affect the stability of the plug and jack connection. The air accumulated in the socket can be dissipated from the gap in the socket for a long time, and when the plug is pulled out, a negative pressure state is formed between the plug and the socket, so that the plug is difficult to pull out.

SUMMERY OF THE UTILITY MODEL

To ameliorate or solve at least one problem in the prior art, the present application provides a waterproof plug and socket assembly and an electrical apparatus including the waterproof plug and socket assembly.

The waterproof plug and socket assembly comprises a socket and a plug, wherein the plug is used for being inserted into the socket,

the socket comprises a female core and a female core seat,

the plug comprises a contact pin and a contact pin base,

the female core is fixed on the female core seat, the contact pin is fixed on the contact pin seat, the contact pin can be inserted into the female core along the axial direction of the plug,

the female core seat and/or the plug pin seat are/is provided with a pressure discharge channel, and in the process that the plug is inserted into the socket, gas between the female core seat and the plug pin seat can be discharged to the positions outside the female core seat and the plug pin seat through the pressure discharge channel.

In at least one embodiment, the hub can be partially wrapped radially outward of the female core print,

the outer peripheral surface of the female core print includes a socket depression recessed radially inwardly in the female core print,

the inner circumferential surface of the pin base comprises a pin bulge which is protruded outwards from the pin base along the radial direction,

the pin protrusion can be inserted into the socket recess,

when the contact pin bulge is inserted into the socket recess, a gap is formed between the socket recess and the contact pin bulge, and the gap forms the pressure discharge channel.

In at least one embodiment, the waterproof plug and socket assembly includes a plug and socket seal disposed either radially inward of the hub or radially outward of the female core housing,

one surface of the female core seat close to the plug is a female core seat end surface, the socket recess continuously extends to the female core seat end surface,

when the socket and the plug are plugged, the distance between the plug and socket sealing ring and the end face of the female core seat is greater than the length of the socket recess in the axial direction.

In at least one embodiment, the female core seat is provided with a pressure relief hole, the pressure relief hole is communicated with the inside of the socket, the pressure relief hole forms the pressure relief channel,

the waterproof plug and socket assembly comprises a pressure release hole plug, and when the plug is not inserted into the socket, the pressure release hole plug plugs the pressure release hole.

In at least one embodiment, the waterproof plug and socket assembly comprises a plug outer shell, a plug inner shell and a cable, wherein the pin base comprises glue injection holes, and sealant is injected into the plug inner shell through the glue injection holes.

In at least one embodiment, the waterproof plug and socket assembly includes a cover body, the cover body is sleeved on the radial outer sides of the female core seat and the plug needle seat, a plug cover body sealing ring is arranged between the cover body and the plug needle seat,

the plug needle seat is provided with a plug needle seat groove at the position contacted with the plug cover body sealing ring, and the cover body is provided with a cover body plug needle seat groove at the position contacted with the plug cover body sealing ring.

In at least one embodiment, the length of the sides of the axial cross-section of the hub groove and the cover-hub groove that contact the plug-cover seal ring is less than 2/3, which is the height of the axial cross-section of the plug-cover seal ring in the radial direction of the plug-cover seal ring.

In at least one embodiment, the waterproof plug and socket assembly includes a compression sleeve disposed on the radially inner side of the cover, the compression sleeve having an internal thread.

In at least one embodiment, the waterproof plug and socket assembly includes a compression nut, a lock nut, and a cover housing seal ring,

the compression nut comprises a sleeve structure with an external thread, the outer peripheral surface of the sleeve structure with the external thread of the compression nut can be meshed with the inner peripheral surface of the compression sleeve in a threaded manner, the compression nut is used for abutting against the plug pin seat in the axial direction,

the locking nut is provided with an internal thread, the cover body is provided with an external thread, the locking nut can be meshed with the peripheral surface of the cover body, the locking nut is used for abutting against the cover body in the axial direction, a cover body shell sealing ring is arranged between the locking nut and the cover body,

the compression nut and the locking nut are used for moving in opposite directions to extrude the plug cover body sealing ring and the cover body shell body sealing ring.

In at least one embodiment, the cover has an annular groove, and an annular step connected to the cover and the female die holder is formed by potting adhesive in the annular groove.

The application provides an electrical equipment including waterproof plug and socket assembly, its waterproof plug and socket assembly be foretell waterproof plug and socket assembly.

The present application provides an electrical apparatus comprising a waterproof plug and socket assembly, the waterproof plug and socket assembly being the waterproof plug and socket assembly described above, and

the electrical equipment comprises an equipment shell, the equipment shell is sleeved on the radial outer side of the cover body, a cover body shell sealing ring is arranged between the equipment shell and the cover body, a groove for the cover body shell is arranged at the position of the cover body, which is in contact with the cover body shell sealing ring, and an equipment shell groove is arranged at the position of the equipment shell, which is in contact with the cover body shell sealing ring.

In at least one embodiment, the length of the edge of the axial cross-section of the cover-housing groove and the equipment-housing groove that contacts the cover-housing seal ring is less than 2/3, the height of the axial cross-section of the cover-housing seal ring in the radial direction of the cover-housing seal ring.

This application makes the alignment location of being convenient for between the plug and socket, prevents the error through the socket sunken with the protruding grafting cooperation between the contact pin arch. When the socket recess and the pin protrusion are plugged, the gap between the socket recess and the pin protrusion can release air between the plug and the socket, and plugging is easy.

Drawings

Fig. 1 shows a schematic structural view of an electrical device comprising a waterproof plug and socket assembly according to an embodiment of the present application.

Fig. 2 and 3 show schematic structural diagrams of a socket of a waterproof plug and socket assembly according to an embodiment of the present application.

Fig. 4 and 5 show schematic structural diagrams of the plug of the waterproof plug and socket assembly according to the embodiment of the application.

Fig. 6 shows a schematic structural diagram of a waterproof plug and socket assembly according to an embodiment of the present application when a plug and a socket are plugged.

Fig. 7 shows a partial schematic structural view of an electrical device including a waterproof plug and socket assembly according to an embodiment of the present application.

Description of the reference numerals

1, a plug shell; 2, a plug inner shell; 3, inserting a pin; 4, inserting a needle seat; 5, pressing the nut; 6, a cover body; 7 plug and socket sealing rings; 8 plug cover body sealing ring; 9 cover body shell sealing ring; 10 an equipment housing; 11 a female core print seat; 12 locking the nut; 13 a female core;

14 a socket recess; 15 positioning the projection; 16 pressure relief holes;

17 a plug projection; 18 glue injection holes;

19 a needle seat groove; 20 cover body and inserting needle seat used groove; 21 a groove for the cover body and the shell; 22 a device housing recess; 23 compressing the sleeve; 24 plug pin seat end surface; 25 gaps; 26 an annular step; 27 an annular groove; 28, a clamping convex ring of the female core seat; 29 a needle seat convex ring; 30, an inner convex ring of the cover body; 31 an outer convex ring of the cover body;

s, a socket; a P plug; axial direction A; r is radial.

Detailed Description

Exemplary embodiments of the present application are described below with reference to the accompanying drawings. It should be understood that the detailed description is only intended to teach one skilled in the art how to practice the present application, and is not intended to be exhaustive or to limit the scope of the application.

The application provides a waterproof plug and socket assembly and an electrical device including the same. As shown in fig. 2, 3, 4 and 5, the waterproof plug-and-socket assembly includes a socket S and a plug P for insertion into the socket S. For convenience of description, the present application uses the axial direction a and the radial direction R of the socket S and the plug P when they are substantially cylindrical as a coordinate system. The cross-sectional shapes of the plug P and the socket S may be circular, oval, oblong, square or other shapes, and the shape of the plug P and the socket S is not limited by the present application.

As shown in fig. 2 and 3, the socket S includes a female core 13 and a female core holder 11. The female core 13 has a hole into which a mating pin 3 (described later) is inserted, and the hole may be plural. The female core holder 11 may have a cylindrical structure for fixing the position of the female core 13.

As shown in fig. 4 and 5, the plug P includes a pin 3 and a pin holder 4. The pin 3 can be inserted into the hole of the female core 13 along the axial direction a, and the number of the pins 3 can be multiple. The pin seat 4 may be a circular cavity for fixing the pin 3, and when the plug P is inserted into the socket S, the pin seat 4 may partially surround the outer side of the female core seat 11 in the radial direction R.

Further, the female core holder 11 has on its outer peripheral surface a socket recess 14 recessed inward in the radial direction R, the socket recess 14 continuously extending to a female core holder end surface 24 (described later), and the male pin boss 17 protruding inward in the radial direction on its inner peripheral surface of the male pin holder 4. Through the cooperation of the pin bulge 17 and the socket recess 14, the circumferential position cooperation of the plug P and the socket S can be realized, and the problem that the pin 3 and the hole of the female core 13 are mistakenly plugged when the pin 3 and the hole of the female core 13 are multiple and have the same shape and size is prevented.

Further, when the pin projection 17 is inserted into the socket depression 14, there is a gap 25 between the pin projection 17 and the socket depression 14. In one embodiment of the present application, the socket recess 14 is a semi-cylindrical recess, and the pin projection 17 is a semi-cylindrical projection, and when the plug P is inserted into the socket S, air between the plug P and the socket S may be discharged through the gap 25, with the gap 25 serving as a pressure discharge passage. When the plug P is pulled out of the socket S and the position of the plug-socket sealing ring 7 (described later) contacts the socket recess 14, external air can enter between the plug P and the socket S through the gap 25, so that the negative pressure environment is destroyed, and the plug P is easily pulled out.

Further, as shown in fig. 2 and 3, the female core print 11 may have a cross groove for injection molding and glue reduction, and a pressure release hole 16 may be provided in the cross groove. The pressure release hole 16 may communicate with the inside of the socket S, and the air between the plug P and the socket S is discharged into the inner space of the socket S through the pressure release hole 16 with the pressure release hole 16 as a pressure discharge passage. When the plug is required to be pulled out, the air pressure at the pressure release hole 16 is in a non-vacuum state, so that the situation that the plug P is difficult to pull out due to negative pressure can be avoided. The waterproof plug/socket assembly may further include a pressure relief hole plug (not shown) for plugging the pressure relief hole 16 when the plug P is not inserted into the socket S, so as to prevent the interior of the socket S from being exposed to a humid environment.

The waterproof plug and socket assembly provided by the application solves the problem that when the plug P and the socket S are plugged, the air between the plug P and the socket S is extruded to cause the inconvenience in plugging through the pressure discharge channel. And the problem that the plug P is difficult to pull out due to the fact that a negative pressure space is formed between the plug P and the socket S in a sealed and tight mode when the plug P is pulled out of the socket S is solved. The particular location and type of the vent passageways is not limiting in this application.

As shown in fig. 6, the waterproof plug and socket assembly may include a plug and socket seal 7. The plug-and-socket seal ring 7 may be arranged radially inside R of the plug-and-socket seat 4 or radially outside R of the female core seat 11. The surface of the female core print 11 near the plug P is a female core print end surface 24.

In one embodiment of the application, the plug-and-socket sealing ring 7 is arranged radially inside R of the plug-and-socket seat 4. When the plug P is inserted into the socket S, that is, when the end surface 24 of the female core print reaches the limit position after extending into the plug print 4, the distance between the plug and socket seal ring 7 and the end surface 24 of the female core print is greater than the length of the socket recess 14 in the axial direction a. The sealing between the plug needle seat 4 and the female core seat 11 is realized through the plug and socket sealing ring 7.

As shown in fig. 1 and 7, the waterproof plug and socket assembly may include a cover 6 and a compression sleeve 23. In one embodiment of the present application, the cover 6 is cylindrical, the cover 6 is fitted over the outside of the female core holder 11 and the needle holder 4 in the radial direction R, the pressing sleeve 23 is provided on the inside of the cover 6 in the radial direction R, the inner circumferential surface of the pressing sleeve 23 has internal threads, and the inner circumferential surface of the pressing sleeve 23 can be threadedly engaged with the outer circumferential surface of the pressing nut 5 (described later). The cap 6 may include a cap inner collar 30 protruding radially inward of the cap 6 and a cap outer collar 31 protruding radially outward of the cap 6.

The waterproof plug and socket assembly further comprises a compression nut 5, a locking nut 12 and a plug cover body sealing ring 8. The plug pin seat 4 may abut against the cover body inner collar 30 of the cover body 6 in the axial direction a, and a plug cover body seal ring 8 may be provided at the abutting portion of the plug pin seat 4 and the cover body 6. The portion of the hub 4 that contacts the plug cap seal ring 8 has a hub groove 19, and the portion of the cap 6 that contacts the plug cap seal ring 8 has a cap hub groove 20.

The female socket 11 includes a female socket snap ring 28, and when the plug P and the socket S are mated, the cover inner snap ring 30 of the cover 6 can abut against the female socket snap ring 28.

The plug-pin seat 4 has a plug-pin seat collar 29 projecting outwards in the radial direction R, and the compression nut 5 comprises a sleeve structure with an external thread. The sleeve structure of the compression nut 5 may abut against the hub collar 29 in the axial direction a. The sleeve structure with the external thread of the compression nut 5 is in threaded engagement with the inner peripheral surface of the compression sleeve 23, and when the compression nut 5 is in rotational engagement with the compression sleeve 23, the outer peripheral surface of the compression sleeve 23 and the gland 6 exhibit static friction.

The lock nut 12 has an internal thread, the cover 6 has an external thread, and the lock nut 12 can be engaged with the external thread-provided outer circumferential surface of the cover 6 and can abut against the device case 10 (described later) and further abut against the cover outer collar 31 in the axial direction a.

The waterproof plug receptacle assembly may further include a cover housing seal 9. An electrical device including a waterproof plug and socket assembly may include a device housing 10. The device shell 10 is sleeved outside the cover 6 in the radial direction R, the device shell 10 abuts against the cover outer convex ring 31 of the cover 6 in the axial direction a, and a cover shell sealing ring 9 is arranged at the abutting position of the device shell 10 and the cover 6. The lid 6 has a lid housing groove 21 at a portion contacting the lid housing seal ring 9, and the device housing 10 has a device housing groove 22 at a portion contacting the lid housing seal ring 9.

The cover body 6 is kept still, the outer peripheral surface of the sleeve structure with the external thread of the compression nut 5 can be meshed with the inner peripheral surface of the compression sleeve 23 during plugging, and in the rotating and meshing process, the outer peripheral surface of the compression sleeve 23 and the cover body 6 have friction force, so that the compression nut 5 tightly pushes the plug needle base convex ring 29, and further the plug cover body sealing ring 8 is compressed. Similarly, the lock nut 12 may be engaged with the outer peripheral surface of the lid 6, and the lock nut 12 may be tightened toward the lid housing packing 9, thereby pressing the device housing 10 and thus the lid housing packing 9.

As shown in fig. 7, the hub groove 19, the cover-hub groove 20, the cover-housing groove 21, and the device-housing groove 22 may have a triangular, rectangular, oblong, or other cross-section in the axial direction a. The length of the sides of the axial cross-sections of the hub groove 19, the cover-hub groove 20, the cover-housing groove 21, and the device-housing groove 22 that contact the plug-cover seal ring 8 or the cover-housing seal ring 9 may be less than 2/3, and more preferably, approximately equal to 1/2, the height in the radial direction R of the axial cross-section of the plug-cover seal ring 8 or the cover-housing seal ring 9. By tightening the compression nut 5 and the lock nut 12, the plug cover seal ring 8 and the cover shell seal ring 9 can be squeezed into the grooves to form step seal, and the sealing performance is enhanced. It is understood that the sealing ring may be made of rubber, silica gel, or even metal with low hardness, but the material of the sealing ring is not limited by the present application.

As shown in fig. 1 and 6, the waterproof plug and socket assembly proposed by the present application may further include a plug outer housing 1, a plug inner housing 2, and a cable (not shown in the drawings). The hub 4 may also include a glue hole 18. After the cable is connected with the contact pin 3, the plug inner shell 2 can be sealed by glue pouring through the glue injecting hole 18, and the waterproof effect of the plug P is enhanced.

As shown in fig. 2 and 3, the female core print 11 may have a positioning protrusion 15 thereon, and the positioning protrusion 15 may prevent the female core print 11 from rotating around the axis and determine the circumferential relative position of the cover 6 and the female core print 11. The angle difference between the positioning protrusion 15 and the socket recess 14 in the circumferential direction of the female die holder 11 may be 45 °, and it can be understood that the application does not limit the relative position of the socket recess 14 and the positioning protrusion 15.

As shown in fig. 1, the cover body 6 has an annular groove 27, and a sealant can be poured into the annular groove 27 through resin to form an annular step 26 connected to the cover body 6 and the female core holder 11, and the annular step 26 can perform a thrust function of the female core holder 11 during plugging and unplugging.

The electrical devices of the present application include, but are not limited to, generators, capacitors, motors, combiners, power lines, etc., and the present application is not limited as to the type of electrical device.

While the foregoing is directed to the preferred embodiment of the present application, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the application.

Claims

1. A waterproof plug and socket assembly is characterized in that,

the waterproof plug and socket assembly comprises a socket and a plug for insertion into the socket,

the socket comprises a female core and a female core seat,

the plug comprises a contact pin and a contact pin base,

2. The waterproof plug and receptacle assembly of claim 1,

the hub can be partially wrapped radially outward of the female core print,

the pin protrusion can be inserted into the socket recess,

3. The waterproof plug and receptacle assembly of claim 2,

the waterproof plug and socket assembly comprises a plug and socket sealing ring which is arranged on the radial inner side of the plug pin seat or the radial outer side of the female core seat,

4. The waterproof plug and receptacle assembly of claim 1,

the female core seat is provided with a pressure relief hole which is communicated with the inside of the socket and forms the pressure discharge channel,

5. The waterproof plug and receptacle assembly of claim 1,

the waterproof plug and socket assembly comprises a plug outer shell, a plug inner shell and a cable, the pin base comprises a glue injection hole, and sealant is injected into the plug inner shell through the glue injection hole.

6. The waterproof plug and receptacle assembly of claim 1,

the waterproof plug and socket assembly comprises a cover body, the cover body is sleeved on the radial outer sides of the female core seat and the plug pin seat, a plug cover body sealing ring is arranged between the cover body and the plug pin seat,

7. The waterproof plug and receptacle assembly of claim 6,

the lengths of the sides of the axial cross sections of the hub groove and the cover-hub groove, which are in contact with the plug cover seal ring, are smaller than 2/3, which is the height of the axial cross section of the plug cover seal ring in the radial direction of the plug cover seal ring.

8. The waterproof plug and receptacle assembly of claim 6,

the waterproof plug and socket assembly comprises a compression sleeve, the compression sleeve is arranged on the inner side of the cover body in the radial direction, and the compression sleeve is provided with an internal thread.

9. The waterproof plug receptacle assembly of claim 8,

the waterproof plug and socket assembly comprises a compression nut, a locking nut and a cover body shell sealing ring,

the compression nut and the locking nut are used for moving oppositely to extrude the plug cover body sealing ring and the cover body shell body sealing ring.

10. The waterproof plug and receptacle assembly of claim 6,

the cover body is provided with an annular groove, and an annular step connected to the cover body and the mother core seat is formed by glue pouring in the annular groove.

11. An electrical device comprising a waterproof plug and socket assembly,

the waterproof plug and socket assembly of any one of claims 1 to 10.

12. An electrical device comprising a waterproof plug and socket assembly,

the waterproof plug and socket assembly of any one of claims 6 to 10,

13. The electrical apparatus including a water resistant plug and socket assembly of claim 12,

the length of the edge of the axial cross section of the groove for the cover body shell and the groove for the equipment shell, which is in contact with the cover body shell sealing ring, is less than 2/3, which is the height of the axial cross section of the cover body shell sealing ring in the radial direction of the cover body shell sealing ring.