CN219123599U - Electrical plug-in device - Google Patents

Abstract

The application discloses an electrical plug device comprising a first connecting piece, a second connecting piece and a locking assembly; the first plug-in part of the first connecting piece is provided with a first shell; the second plug-in part of the second connecting piece is provided with a second shell, and the second shell is plugged in the first accommodating cavity of the first shell; the locking assembly comprises a clamping groove and a clamping block, the first shell can rotate around the first axial direction relative to the second shell, so that the clamping block can be switched between a locking groove body of the clamping groove and an in-out groove body, and locking and unlocking of the first plug-in part and the second plug-in part are realized; the connection reliability of the plug and the socket can be improved, so that the first connecting piece and the second connecting piece are prevented from being loosened due to the action of external force in the use process of the electric plug-in device.

Description

Electrical plug-in device

Technical Field

The present application relates to the field of electrical connectors, and in particular to an electrical connector.

Background

Electrical plug-in devices generally comprise a plug and a socket, by plugging the plug into the socket, an electrical connection of the electrical device to a power source can be achieved. However, in the related art, the reliability of the connection between the plug and the socket is poor, and the electrical plug device is easy to be released from the plug and the socket due to the external force during the use.

Disclosure of Invention

The utility model provides an electric plug device can improve the connection reliability of plug and socket to effectively prevent electric plug device and socket loosening because of exogenic action in the use.

An electrical plug-in device comprising: the first connecting piece comprises a first plug-in connection part, wherein the first plug-in connection part is provided with a first shell and a first accommodating cavity formed by surrounding the first shell; the second connecting piece comprises a second inserting part, the second inserting part is provided with a second shell and a second accommodating cavity formed by surrounding the second shell, and the second shell is inserted into the first accommodating cavity and is detachably connected with the first shell; the locking assembly comprises a clamping groove and a clamping block, wherein the clamping block is arranged on one of the first shell and the second shell, the clamping groove is arranged on the other one of the first shell and the second shell, the clamping groove comprises a locking groove body and an in-out groove body communicated with the locking groove body, the locking groove body and the in-out groove body are arranged around a first axial direction, the first shell can rotate around the first axial direction relative to the second shell, so that the clamping block is switched between the locking groove body and the in-out groove body, and locking and unlocking of the first plug-in part and the second plug-in part are realized.

The beneficial effects of this application are: after the second plug-in part is plugged with the first plug-in part, the first plug-in part and the second plug-in part can be locked through the locking of the clamping block and the clamping groove, so that the connection of the first connecting piece and the second connecting piece is more firm, the connection reliability of the first connecting piece and the second connecting piece can be improved, the first connecting piece and the second connecting piece can be prevented from being loosened due to the action of external force in the use process of the electric plug-in device, the electric plug-in device is more reliable to use, and in addition, the locking of the clamping block and the clamping groove and the connection locking are more convenient, and the user experience can be improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic view of an electrical plug device according to an embodiment of the present disclosure when a first connector is separated from a second connector;

FIG. 2 is a schematic view of a portion of an electrical connector assembly according to an embodiment of the present disclosure when a first connector is mated with a second connector;

FIG. 3 is a schematic view of a portion of an electrical connector assembly according to an embodiment of the present disclosure when a first connector is mated with a second connector;

FIG. 4 is a schematic view of a portion of an electrical connector assembly according to an embodiment of the present disclosure when a first connector is mated with a second connector;

fig. 5 is a schematic view of a portion of an electrical plug device according to an embodiment of the present disclosure when the first connector is separated from the second connector.

Reference numerals:

10. a first connector; 11. a first plug-in connection; 111. a first housing; 111a, a first end face; 112. a first accommodation chamber; 113. a third housing; 114. a first plug member; 114a, a ferrule; 114b, a protective housing; 114c, a protection cavity; 12. a poking block; 13. anti-skid lines; 14. a first body; 20. a second connector; 21. a second plug-in connection; 211. a second housing; 212. a second accommodation chamber; 213. a second plug member; 213a, a plug cavity; 22. a second body; 30. a locking assembly; 31. a clamping groove; 311. an access slot; 312. locking the groove body; 32. a clamping block; 33. a hooking part; 40. a limit component; 41. a slide block; 42. limiting sliding grooves; 50. an elastic member.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

The application provides an electric plug device to solve among the relevant technique, the connection reliability of plug and socket is relatively poor, and electric plug device is because of the problem that external force effect leads to plug and socket to loosen easily in the use.

In particular, as shown in fig. 1 and 2, the electrical plug device comprises a first connector 10, a second connector 20 and a locking assembly 30.

The first connector 10 includes a first plug portion 11, where the first plug portion 11 includes a first housing 111 and a first accommodating cavity 112 surrounded by the first housing 111; the second connector 20 includes a second plugging portion 21, where the second plugging portion 21 has a second housing 211 and a second accommodating cavity 212 (as shown in fig. 3) surrounded by the second housing 211, and the second housing 211 is plugged into the first accommodating cavity 112 and detachably connected to the first housing 111; the first connector 10 is one of a plug and a socket, and the second connector 20 is the other of the plug and the socket. It can be understood that the first connector 10 and the second connector 20 can be plugged, taking the first connector 10 as a socket, taking the second connector 20 as a plug as an example, the socket can be electrically connected with a power supply such as a battery or a power grid, the plug can be electrically connected with an electronic device such as a mobile phone, a computer or an automobile, when the plug is plugged into the socket, the electronic device can be electrically connected with the power supply, so that the power supply is utilized to supply power to the electronic device, and when the plug is unplugged from the socket, the electronic device is disconnected with the power supply.

Specifically, the locking assembly 30 includes a locking slot 31 and a locking block 32, the locking block 32 is disposed on one of the first housing 111 and the second housing 211, the locking slot 31 is disposed on the other of the first housing 111 and the second housing 211, the locking slot 31 includes a locking slot 312 and an access slot 311 communicated with the locking slot 312, the locking slot 312 and the access slot 311 are arranged around a first axial AA, and the first housing 111 can rotate around the first axial AA relative to the second housing 211, so that the locking block 32 is switched between the locking slot 312 and the access slot 311. It should be noted that, the first axial direction AA is parallel to the insertion direction of the second housing 211 into the first accommodating cavity 112, taking the overall shape of the first housing 111 and the second housing 211 as a cylinder as an example, when the second housing 211 is inserted into the first accommodating cavity 112, the axial direction of the first housing 111 coincides with the axial direction of the second housing 211, and the axial direction of the first housing 111 is the first axial direction AA. It should be further noted that, when the card slot 31 is disposed in the first housing 111, the arrangement of the locking slot 312 and the access slot 311 around the first axial direction AA means that the locking slot 312 and the access slot 311 are arranged along the circumferential direction of the first housing 111; when the card slot 31 is disposed in the second housing 211, the arrangement of the locking slot 312 and the access slot 311 around the first axial direction AA means that the locking slot 312 and the access slot 311 are arranged along the circumferential direction of the second housing 211.

It can be understood that when the clamping block 32 is located in the locking groove 312, the clamping block 32 is locked with the clamping groove 31, so as to achieve locking of the first plugging portion 11 and the second plugging portion 21; when the clamping block 32 is located in the locking groove 312, the clamping block 32 can enter and exit the clamping groove 31 through the entering and exiting groove 311, so as to unlock the first plug portion 11 and the second plug portion 21.

It should be noted that, in this embodiment of the present application, the locking and unlocking of the first plugging portion 11 and the second plugging portion 21 may be achieved by locking and unlocking the clamping block 32 and the clamping groove 31, when the electrical connection between the electronic device and the power supply needs to be achieved by using the electrical plugging device, the relative positions of the second connecting piece 20 and the first connecting piece 10 are adjusted so that the clamping block 32 corresponds to the access slot 311, then the first connecting piece 10 or the second connecting piece 20 is moved along the first axial direction AA, so that the first connecting piece 10 and the second connecting piece 20 are close to each other, the second housing 211 is inserted into the first accommodating cavity 112, the clamping block 32 enters the clamping groove 31 through the access slot 311, then the first connecting piece 10 or the second connecting piece 20 is rotated, and the clamping block 32 is driven to move from the access slot 311 to the locking slot 312, so that the locking of the clamping block 32 and the clamping groove 31 is achieved, thereby achieving the locking of the first plugging portion 11 and the second plugging portion 21; when the electric plug-in device is not needed, the first connector 10 or the second connector 20 is rotated to drive the clamping block 32 to move from the locking groove 312 to the in-out groove 311, and then the first connector 10 and the second connector 20 are separated from each other, so that the second housing 211 is pulled out of the first accommodating cavity 112, and meanwhile, the clamping block 32 can withdraw from the clamping groove 31 through the in-out groove 311, so that the unlocking of the first plug-in portion 11 and the second plug-in portion 21 is realized through the interface.

It may be appreciated that, in the embodiment of the present application, after the second plugging portion 21 is plugged with the first plugging portion 11, the first plugging portion 11 and the second plugging portion 21 may be locked by the locking of the clamping block 32 and the clamping groove 31, so that the connection between the first connecting member 10 and the second connecting member 20 is more fastened, the connection reliability between the first connecting member 10 and the second connecting member 20 may be improved, and thus, the first connecting member 10 and the second connecting member 20 may be prevented from being loosened due to the external force in the use process of the electric plugging device, so that the use of the electric plugging device is more reliable, and in addition, the locking of the clamping block 32 and the clamping groove 31 and the connection locking are more convenient, and the user experience may be improved.

It should be noted that, the overall shape of the first housing 111 may be cylindrical, and the overall shape of the second housing 211 may also be cylindrical, and when the second housing 211 is inserted into the first accommodating cavity 112, the axis of the first housing 111 coincides with the axis of the second housing 211 and the first axial direction AA.

In fig. 1 and 2, the case where the clamping groove 31 is provided on the outer side wall of the second housing 211 and the clamping block 32 is provided on the inner side wall of the first housing 111 is illustrated, and the clamping groove 31 may be provided on the inner side wall of the first housing 111 and the clamping block 32 may be provided on the outer side wall of the second housing 211, as required; when the second housing 211 is inserted into the first accommodating chamber 112, the first housing 111 may be rotated with respect to the second housing 211, or the second housing 211 may be rotated with respect to the first housing 111.

With continued reference to fig. 1 and 2, in an embodiment of the present application, the latch 32 is connected to an inner side wall of the first housing 111, the latch groove 31 is disposed on an outer side wall of the second housing 211, the second housing 211 has a second end surface (not shown) facing the second connector 20, the access groove 311 extends along the first axial direction AA to penetrate the second end surface, and a portion of the access groove 311 away from the second end surface extends along a circumferential direction of the second housing 211 to form a locking groove 312. It is understood that when the access slot 311 penetrates the second end surface, a gap is formed, the clamping block 32 can access the access slot 311 from the gap, and in addition, when a portion of the access slot 311 away from the second end surface extends along the circumferential direction of the second housing 211 to form the locking slot 312, a portion of the second housing 211 located on the locking slot 312 near the first connector 10 is not "eroded" by the access slot 311, so as to form a hooking portion 33, when the clamping block 32 moves to the locking slot 312, the clamping block 32 is blocked by the hooking portion 33, so that the first housing 111 and the second housing 211 cannot move along the first axial direction AA, thereby locking the first plug portion 11 and the second plug portion 21.

In another embodiment of the present application, the latch 32 may be connected to an outer sidewall of the second housing 211, the latch slot 31 may be disposed on an inner sidewall of the first housing 111, the first housing 111 has a first end surface 111a facing the first connector 10, the access slot 311 extends along the first axial direction AA to penetrate the first end surface 111a, and a portion of the access slot 311 away from the first end surface 111a extends along a circumferential direction of the first housing 111 to form a locking slot 312.

It should be further noted that, when the clamping block 32 is connected to the inner side wall of the first housing 111, the clamping block 32 may be integrally formed with the first housing 111, so as to improve the connection strength between the clamping block 32 and the first housing 111; when the latch 32 is connected to the outer sidewall of the second housing 211, the latch 32 may be integrally formed with the second housing 211, so as to improve the connection strength between the latch 32 and the second housing 211. Of course, the clamping block 32 and the first housing 111 or the second housing 211 may be assembled by gluing, welding, clamping or screwing after being molded separately.

In an embodiment of the present application, the locking assemblies 30 may be provided with a plurality of groups, and the plurality of groups of locking assemblies 30 are arranged at intervals around the first axial direction AA, so as to further enhance the connection strength between the first connecting member 10 and the second connecting member 20 when the locking block 32 is locked with the locking groove 31. It should be further noted that, the plurality of sets of locking assemblies 30 are arranged at intervals around the first axial direction AA, which means that the plurality of sets of locking assemblies 30 are arranged along the circumferential direction of the first housing 111 and the second housing 211.

As shown in fig. 2 and 3, in some embodiments of the present application, the first plugging portion 11 further includes a third housing 113, the third housing 113 is located in the first accommodating cavity 112, and the second housing 211 is plugged between the first housing 111 and the third housing 113. When the second plugging portion 21 is plugged with the first plugging portion 11, the plugging space formed between the first housing 111 and the third housing 113 can provide guidance for the second housing 211, so that the second housing 211 can be smoothly inserted into the first accommodating cavity 112.

Further, the third casing 113 is annularly disposed around the first axial direction AA, the outer sidewall of the second casing 211 is attached to the inner sidewall of the first casing 111, and the inner sidewall of the second casing 211 is attached to the outer sidewall of the third casing 113, so that the second casing 211 is sandwiched between the first casing 111 and the third casing 113, and friction is provided to the second casing 211 by using the first casing 111 and the third casing 113, so as to further improve the connection strength between the second plug portion 21 and the first plug portion 11.

In an embodiment of the present application, the first housing 111 and the third housing 113 may be rotatably connected about the first axial direction AA. It can be understood that when the clamping block 32 is locked or unlocked with the clamping groove 31, only the third housing 113 can be rotated around the first axial direction AA, so as to drive the clamping block 32 to move, and the first connector 10 or the second connector 20 does not need to be integrally rotated, so that the user can operate the electric plug device more conveniently.

Further, the outer side wall of the first housing 111 is connected with a toggle block 12, and the toggle block 12 can facilitate the user to rotate the first housing 111. The toggle block 12 may be integrally formed with the first housing 111, so as to increase the connection strength between the toggle block 12 and the first housing 111; the toggle block 12 may be assembled with the first housing 111 by gluing, welding, clamping or screwing.

Further, the outer sidewall of the first housing 111 and the surface of the toggle block 12 may be provided with anti-slip lines 13, and the anti-slip lines 13 may increase friction, so that the user may rotate the first housing 111.

In an embodiment of the present application, as shown in fig. 3 and 4, the electrical plug device further includes a limiting component 40, the limiting component 40 includes a slider 41 and a limiting chute 42, the slider 41 is disposed on one of an inner sidewall of the first housing 111 and an outer sidewall of the third housing 113, the limiting chute 42 is disposed on the other of the inner sidewall of the first housing 111 and the outer sidewall of the third housing 113, the limiting chute 42 extends around the first axial direction AA, and the slider 41 and the limiting chute 42 are slidably connected along an extending direction of the limiting chute 42. By the engagement of the slider 41 with the stopper slide groove 42, the rotation direction of the third housing 113 can be restricted, rotation of the third housing 113 about the first axial direction AA can be ensured, and in addition, the third housing 113 can be prevented from being separated from the first housing 111 by moving in the first axial direction AA with respect to the first housing 111. Taking the example that the limiting chute 42 is disposed on the inner side wall of the first housing 111, the limiting chute 42 extends around the first axial direction AA, which means that the limiting chute 42 extends along the circumferential direction of the first housing 111.

It should be noted that, when the slider 41 is connected to the inner side wall of the first housing 111, the slider 41 may be integrally formed with the first housing 111, so as to improve the connection strength between the slider 41 and the first housing 111; when the slider 41 is connected to the outer sidewall of the third housing 113, the slider 41 may be integrally formed with the third housing 113, so as to improve the connection strength between the slider 41 and the third housing 113. Of course, the slider 41 may be assembled by gluing, welding, fastening or screwing after being molded separately from the first housing 111 or the third housing 113.

Specifically, when the second housing 211 is inserted between the first housing 111 and the third housing 113, the limiting assembly 40 is located at a side of the second housing 211 facing the first connector 10, so as to avoid the limiting assembly 40 from obstructing the insertion of the second housing 211.

In an embodiment of the present application, the limiting assemblies 40 may be provided with multiple groups, and the multiple groups of limiting assemblies 40 are arranged at intervals around the first axial direction AA, so that the third housing 113 rotates more smoothly.

With continued reference to fig. 3 and 4, in some embodiments of the present application, the electrical plug device further includes an elastic member 50, where the elastic member 50 is located in the limit chute 42, and one end of the elastic member 50 is connected to the slider 41 and the other end is connected to an inner side wall of the limit chute 42. It can be understood that the elastic member 50 extends along the extending direction of the limiting chute 42, and the elastic member 50 is configured to provide an elastic force to the first housing 111 along the circumferential direction of the first housing 111, so that the latch 32 is kept locked with the latch groove 31.

It should be noted that, taking the case that the clamping block 32 is disposed on the inner side wall of the first housing 111 as an example, when the clamping block 32 is located on the locking slot 312, the clamping block 32 is locked with the clamping slot 31, and at this time, the elastic member 50 may provide an elastic force for the first housing 111 to keep the clamping block 32 locked with the clamping slot 31, so that the clamping block 32 and the clamping slot 31 can be locked more tightly, the locking strength of the first connecting member 10 and the second connecting member 20 may be enhanced, and the first housing 111 may be prevented from rotating due to an external force in the use process of the electrical plug device, so that the first connecting member 10 and the second connecting member 20 may be prevented from being released; in addition, when the second connecting member 20 is plugged into the first connecting member 10, the first housing 111 is required to be rotated around the first axial direction AA relative to the third housing 113, so that after the elastic member 50 is in a compressed state, the clamping block 32 is inserted into the access slot 311, and then the first housing 111 can be released, and the first housing 111 is rotated and reset under the elastic force of the elastic member 50, so that the clamping block 32 automatically rotates to the locking slot 312, thereby making the use of the electrical plug device more convenient. The elastic member 50 may be preferably a spring, and of course, the elastic member 50 may be an elastic sheet, an elastic sponge block, an elastic rubber block, or the like.

As shown in fig. 5, in some embodiments of the present application, the first plug portion 11 further includes a first plug member 114 disposed in the first accommodating cavity 112, where the first plug member 114 includes a ferrule 114a and a protection housing 114b, and the protection housing 114b is disposed around a peripheral side of the ferrule 114a to define a protection cavity 114c; the second plug portion 21 further includes a second plug member 213 located in the second accommodating cavity 212, the second plug member 213 has a plug cavity 213a, the second plug member 213 is plugged into the protection cavity 114c, and the plug core 114a is plugged into the plug cavity 213a.

It should be noted that, the ferrule 114a and the second connector 213 may be made of conductive metal such as copper, and the electrical connection between the first connector 10 and the second connector 20 is achieved through the electrical connection between the ferrule 114a and the second connector 213, so as to achieve the electrical connection between the electronic device and the power supply, in addition, by using the plugging of the ferrule 114a and the second connector 213 and the plugging of the second connector 20 and the protection housing 114b, the connection strength between the first connector 10 and the second connector 20 may be further improved, so as to prevent the loosening of the first connector 10 and the second connector 20 during the use of the electrical plugging device, and in addition, the protection housing 114b may provide the ferrule 114a with a protection cavity 114c, so as to prevent the shorting of the ferrule 114a and other conductive components in the first accommodating cavity 112.

Further, a plurality of first connectors 114 and second connectors 213 are provided, the first connectors 114 and the second connectors 213 are in one-to-one correspondence, the plurality of first connectors 114 are arranged at intervals, and the plurality of second connectors 213 are arranged at intervals. By increasing the number of the first connectors 114 and the second connectors 213, the connection strength and the current transmission capability of the first connector 10 and the second connector 20 can be increased, and in addition, the ferrules 114a of each first connector 10 have independent protection cavities 114c, so that shorting of the ferrules 114a with other conductive members in the first accommodating cavity 112 can be prevented, and shorting between the ferrules 114a can be prevented.

In one embodiment of the present application, the surface of the ferrule 114a is provided with insulating particles. The insulating particles may be made of non-conductive plastic or rubber, and the insulating particles may further prevent shorting of the ferrules 114a with other conductive components in the first receiving chamber 112, or may prevent shorting between the ferrules 114 a.

In an embodiment of the present application, the first connector 10 further includes a first main body 14 (see fig. 1), the first plug 114 is mounted on the first main body 14, the first housing 111 is rotationally connected with the first main body 14 around the first axial direction AA, and the third housing 113 is fixedly connected with the first main body 14; the second connector 20 further includes a second main body 22 (see fig. 1), the second plug 213 is mounted on the second main body 22, and the second housing 211 is fixedly connected to the second main body 22.

The foregoing description of the preferred embodiment of the present utility model is not intended to limit the utility model to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims (10)

1. An electrical plug-in device, comprising:

the first connecting piece comprises a first plug-in connection part, wherein the first plug-in connection part is provided with a first shell and a first accommodating cavity formed by surrounding the first shell;

the second connecting piece comprises a second inserting part, the second inserting part is provided with a second shell and a second accommodating cavity formed by surrounding the second shell, and the second shell is inserted into the first accommodating cavity and is detachably connected with the first shell;

the locking assembly comprises a clamping groove and a clamping block, wherein the clamping block is arranged on one of the first shell and the second shell, the clamping groove is arranged on the other one of the first shell and the second shell, the clamping groove comprises a locking groove body and an in-out groove body communicated with the locking groove body, the locking groove body and the in-out groove body are arranged around a first axial direction, the first shell can rotate around the first axial direction relative to the second shell, so that the clamping block is switched between the locking groove body and the in-out groove body, and locking and unlocking of the first plug-in part and the second plug-in part are realized.

2. The electrical connector of claim 1, wherein the latch is connected to an inner sidewall of the first housing, the latch groove is disposed on an outer sidewall of the second housing, the second housing has a second end face facing the second connector, the access groove extends along the first axial direction to penetrate the second end face, and a portion of the access groove away from the second end face extends along a circumferential direction of the second housing to form the locking groove; or alternatively, the first and second heat exchangers may be,

the fixture block connect in the lateral wall of second casing, the draw-in groove set up in the inside wall of first casing, first casing has the orientation first terminal surface of first connecting piece, go in and out the cell body along first axial extends in order to run through first terminal surface, go in and out the cell body and keep away from the part of first terminal surface is followed first casing's circumference extends in order to form the closure cell body.

3. The electrical plug device of claim 1, wherein the first plug portion further comprises a third housing located in the first receiving cavity, the second housing being plugged between the first housing and the third housing.

4. An electrical plug device according to claim 3, wherein the first housing is rotatably connected to the third housing about the first axis.

5. The electrical plug device of claim 4, further comprising:

the limiting assembly comprises a sliding block and a limiting sliding groove, wherein the sliding block is arranged on one of the inner side wall of the first shell and the outer side wall of the third shell, the limiting sliding groove is arranged on the other one of the inner side wall of the first shell and the outer side wall of the third shell, the limiting sliding groove extends around the first axial direction, and the sliding block is in sliding connection with the limiting sliding groove along the extending direction of the limiting sliding groove.

6. An electrical connector as claimed in claim 5, further comprising an elastic member located in the limit chute, one end of the elastic member being connected to the slider and the other end being connected to an inner side wall of the limit chute.

7. The electrical plug device of claim 4, wherein a toggle block is connected to an outer sidewall of the first housing.

8. The electrical connector of claim 1, wherein the first connector further comprises a first connector located in the first receiving cavity, the first connector comprising a ferrule and a protective housing disposed around a peripheral side of the ferrule to define a protective cavity;

the second plug-in part further comprises a second plug-in component positioned in the second accommodating cavity, the second plug-in component is provided with a plug-in cavity, the second plug-in component is plugged in the protection cavity, and the plug-in core is plugged in the plug-in cavity.

9. The electrical connector assembly of claim 8, wherein a plurality of said first connectors and said second connectors are provided, wherein said first connectors are in one-to-one correspondence with said second connectors, wherein a plurality of said first connectors are spaced apart and a plurality of said second connectors are spaced apart.

10. An electrical plug device according to claim 8, wherein the surface of the plug core is provided with insulating particles.

Images