CN111478120A

CN111478120A - Locking plug

Info

Publication number: CN111478120A
Application number: CN202010271079.7A
Authority: CN
Inventors: 朱小平
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-08
Filing date: 2020-04-08
Publication date: 2020-07-31
Anticipated expiration: 2040-04-08
Also published as: CN111478120B

Abstract

The invention provides a locking plug which is used for connecting a socket, wherein the socket is provided with a jack and comprises a shell, a locking assembly and an actuating assembly, wherein the shell is provided with an electric connecting point, the electric connecting point is used for realizing the electric connection with the socket, the locking assembly is installed through the shell, when the locking assembly is connected with the socket, the locking assembly is inserted into the jack, the locking assembly comprises a bolt and a locking plate, the locking plate is arranged outside the bolt, the actuating assembly can drive the bolt to move, the bolt is provided with a first inclined surface, a second inclined surface is arranged on the locking plate corresponding to the first inclined surface, and when the bolt moves relative to the shell in a first movement direction, the first inclined surface acts on the second inclined surface to enable at least part of the locking plate to be outwards expanded relative to the bolt to be locked with the socket. The invention adopts a brand new mode to realize the locking between the electric connectors.

Description

Locking plug

Technical Field

The invention relates to the technical field of connectors, in particular to a plug with a locking function.

Background

The electric connector comprises a plug and a socket, is widely applied to various devices, and realizes the conduction of a circuit through the connection between the plug and the socket.

The connector may generally include a plug and a receptacle. The plug is used as a male connector, the plug is provided with a plug pin, the socket is used as a female connector, the socket is internally provided with a contact pin, and the plug pin can be inserted into the socket to be electrically contacted with the contact pin in the socket so as to realize the electric conduction of a power supply and electric equipment.

In order to prevent the electrical connection failure caused by the accidental disconnection between the electrical connectors, a locking device is usually arranged on the electrical connectors, and in the prior art, for example, a locking ring is arranged, and after the pin is inserted into the locking ring in another electrical connector, the locking ring is in an inclined state and then locks the pin through the locking ring.

Disclosure of Invention

The invention provides a locking plug, which realizes the locking between electric connectors by adopting a brand new mode.

The invention provides a locking plug which is used for connecting a socket, wherein the socket is provided with a jack and comprises a shell, a locking assembly and an actuating assembly, wherein the shell is provided with an electric connection point, the electric connection with the socket is realized through the electric connection point, the locking assembly is installed through the shell, when the locking assembly is connected with the socket, the locking assembly is inserted into the jack, the locking assembly comprises a bolt and a locking plate, the locking plate is arranged outside the bolt, the actuating assembly can drive the bolt to move, the bolt is provided with a first inclined surface, a second inclined surface is arranged on the locking plate corresponding to the first inclined surface, and when the bolt moves towards a first movement direction relative to the shell, the first inclined surface acts on the second inclined surface to further enable the locking plate to be stressed to expand outwards and be locked with the socket.

Furthermore, the bolt is driven by the actuating component to move forwards and backwards.

Furthermore, the bolt has first stop part, the locking plate has second stop part, through first stop part with the cooperation of second stop part is in order to prevent the locking plate is relative the bolt expands outward and breaks away from the bolt.

Furthermore, the first blocking part is provided with a first blocking face, the second blocking part is provided with a second blocking face, and the first blocking face and/or the second blocking face are/is the same as the first inclined face in the inclined direction, so that the bolt acts on the second blocking face through the first blocking face when moving reversely, and the locking plate is restored.

Further, the bolt is recessed from the surface to the inner front end to form a groove, so that the bolt forms the first blocking part, and the second blocking part is arranged in the groove.

Furthermore, the locking plate is provided with a U-shaped groove, the second inclined plane is arranged in the U-shaped groove, the second blocking part is a stop dog formed by extending the inner side wall of the U-shaped groove, and the first blocking part is arranged between the stop dog and the first inclined plane.

Further, the first inclined surface and the second inclined surface are always kept in contact, and the first blocking surface and the second blocking surface are also always kept in contact.

Further, the bolt is formed with first guide structure, the locking plate is formed with second guide structure, first guide structure with the cooperation of second guide structure so that the locking plate for direction when the bolt moves.

Furthermore, the locking component forms a PIN of the locking plug, and the plug PIN or the locking plate is a PIN for realizing electric connection between the PIN and an electric connection point at the jack.

Further, the shell is provided with a stopping part, and the end part of the locking plate is limited by the stopping part so as to prevent the locking plate and the bolt from moving in the same direction. The invention has the following beneficial effects: after the electric connector is plugged with the socket, the locking assembly is inserted into the jack, the first inclined plane acts on the second inclined plane through the movement of the plug pin, and then at least part of the locking plate is far away from the plug pin, so that the locking assembly is enlarged, and the locking plate is locked with the socket to realize locking.

Drawings

Fig. 1 is a schematic structural view of an electrical connection plug according to a first embodiment of the present invention.

Fig. 2 is a schematic internal structure view of an electrical connection plug according to a first embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a latch and a lock plate according to a first embodiment of the present invention.

Fig. 4 is a schematic structural diagram of the electrical connection plug of the first embodiment of the present invention when unlocked.

Fig. 5 is a schematic structural view of the electric connection plug of the first embodiment of the present invention at the time of locking.

Fig. 6 is a locking tab state view of the first embodiment of the electrical connection plug of the present invention when locked.

Fig. 7 is a partial structural view of an electrical connection plug according to a second embodiment of the present invention.

Fig. 8 is a schematic structural view of an electrical connection plug of a second embodiment of the present invention when unlocked.

Fig. 9 is a schematic structural view of an electric connection plug of a second embodiment of the present invention at the time of locking.

Fig. 10 is a locking plate state diagram of the electric connection plug of the second embodiment of the invention when locked.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention. It is to be understood that the drawings are provided solely for the purposes of reference and illustration and are not intended as a definition of the limits of the invention. The connection relationships shown in the drawings are for clarity of description only and do not limit the manner of connection.

Fig. 1 shows a perspective view of an electrical connector plug 100 according to a first embodiment of the present invention. Fig. 2 shows an internal structural diagram of an electrical connection plug 100 according to a first embodiment of the present invention. In this embodiment, the electrical connection plug 100 includes a housing 10 and two pins 11 for connecting the neutral wire and the live wire, respectively, and the pins 11 are electrically connected to a cable 12. The two pins 11 are fixed by the housing 10 and are respectively used as electrical connection points for realizing electrical connection with two contact pins on the socket, so as to realize the conduction between the zero line and the live line.

Referring to fig. 3-5, a locking assembly 20 is disposed on the housing 10, and the locking assembly 20 may specifically include a latch 21 and a locking tab 22. The latch 21 may be generally cylindrical in configuration, the locking tabs 22 may be one or more, such as 2 or 4, the locking tabs 22 may be generally circular arc shaped tabs corresponding to the profile of the latch 21, and fig. 3 shows a corresponding block diagram of a single locking tab 22 and the latch 21. When a plurality of locking tabs 22 are included, the locking tabs 22, when in an undeployed state, are distributed in an annular array around the latch 21 and cover the latch 21, forming an enclosure for the latch 21, such that the locking assembly 20 is rod-shaped and can be inserted into a receptacle on a receptacle.

In some embodiments, the locking assembly 20 can function as one of the prongs of an electrical connector plug, such as the neutral, live or ground prongs, when the locking tab 22 is not deployed. In the present embodiment, when the locking piece 22 is not unfolded, the locking assembly 20 is a ground pin, and the existing ground insertion hole on the socket can be used as the insertion hole, so that the manufacturing cost can be saved by not opening the mold and additionally providing the insertion hole, and the existing socket can be adapted, and a completely new socket is not required to be provided.

The locking piece 22 has an outer surface 231 facing away from the latch 21 and an inner surface 232 facing toward the latch 21, the outer surface 231 of the locking piece 22 has a locking structure 233, and the locking structure 233 may be a rough surface or an anti-slip layer or the like provided on the outer surface 231 for increasing friction force, or may be a locking hook provided on the outer surface 231.

With continued reference to fig. 2, an actuating assembly 30 is connected to the housing 10, the actuating assembly 30 being used to move the latch 21. Specifically, the latch 21 is moved back and forth by the actuating assembly 30.

Be equipped with first inclined plane 211 on bolt 21, first inclined plane 211 can locate the front end of bolt 21 is equipped with the second inclined plane 221 that corresponds with first inclined plane 211 on locking plate 22, and when bolt 21 moved, first inclined plane 211 moved for second inclined plane 221, and first inclined plane 211 and second inclined plane 221 contact effect make locking plate 22's front end expand outward gradually, and locking Assembly 20 volume grow, and locking plate 22's surface 231 locks with the socket.

The direction of movement of the latch 21 relative to the housing 10 to lock the plug 100 to the receptacle is a first direction of movement, which is the locking direction, and the direction of reverse movement of the latch 21 to unlock the plug 100 to the receptacle is a second direction of movement, which is the unlocking direction. The first inclined surface 211 is an inclined surface inclined in the first movement direction of the plug 21 with respect to the housing 10.

Referring to fig. 2-5, the actuating assembly 30 includes a knob 301 rotatably coupled to the housing 10 and having threads, a sliding sleeve 302 threadably coupled to the knob 301, the sliding sleeve 302 coupled to the latch 21. The rotation motion of the knob 301 is converted into the back-and-forth movement of the sliding sleeve 302, so that the back-and-forth movement of the bolt 21 is realized, the forward movement (the direction shown by the arrow in fig. 4) is realized for locking, and the backward movement (the direction shown by the arrow in fig. 5) is realized for unlocking. The first inclined surface 211 is an inclined surface inclined from an outer diameter to an inner diameter in a direction in which the plug 21 moves forward with respect to the housing 10.

The rear end portion 22a of the locking piece 22 is defined by a retainer ring 40 fixed to the housing 10, and the retainer ring 40 constitutes a stopper, or the rear end portion 22a of the locking piece 22 may be defined by forming a stopper directly in the housing 10.

Specifically, the rear end portion 22a of the locking plate 22 has a locking groove 224, the retaining ring 40 is disposed in the locking groove 224, when the plug pin 21 moves forward and backward, the first inclined surface 211 and the second inclined surface 221 act, the retaining ring 40 will prevent the locking plate 22 from moving forward and backward along with the locking plate 22, but the front end 22b of the locking plate 22 is far away from the plug pin 21 and expands outward (see fig. 6 together), the front end of the locking plate 22 is spread out like a petal shape, and the front end 22b of the locking plate 22 forms a claw to lock with the socket.

The first inclined surface 211 can be disposed at the front end of the plug pin 21, the first inclined surface 211 at the front end of the plug pin 21 and the second inclined surface 221 of the locking plate 22 act, the first inclined surface 211 directly enables the front end 22b of the locking plate 22 to be stressed and locked with the socket, and the locking force is strong and stable. Of course, the first inclined surface 211 can also be arranged at the middle section of the plug pin 21.

The latch 21 is formed with a first guiding structure 212, the locking plate 22 is formed with a second guiding structure 222, and the first guiding structure 212 and the second guiding structure 222 are correspondingly arranged and can be provided in plurality. The first inclined surface 211 can be formed with a first guiding structure 212, and the second inclined surface 221 is formed with a second guiding structure 222. The first guide structure 212 may be a guide slot with an inclined guide slot and the second guide structure 222 may be an inclined guide block. The cooperation between the first guide structure 212 and the second guide structure 222 facilitates the guiding of the locking piece 22 when moving relative to the latch 21, preventing the first inclined surface 211 from coming out of contact with the second inclined surface 221.

If the locking assembly 20 is used as a PIN of the plug 100, the plug 21 or the locking piece 22 is made of conductive metal and connected with a wire, and the plug 21 or the locking piece 22 is a PIN for electrically connecting the PIN with an electrical connection point at the socket of the socket. When the locking assembly 20 is inserted into the jack, the plug 21 serves as an electrical connection point of the PIN connection jack, and the locking plate 22 is locked with the shell 10 of the socket, or the locking plate 22 serves as the PIN and is locked with the electrical connection point of the socket and is simultaneously locked with the electrical connection point.

The plug 21 has a first stopper 213 and the locking piece 22 has a second stopper 223. The internal surface 232 of locking plate 22 extends the first portion of colluding that forms towards the front end and constitutes first stop part 213, the sunken recess that forms of the inside front end in surface of bolt 21, so bolt 21 forms the second and colludes the portion and constitute second stop part 223, first portion of colluding is located in the recess and when locking plate 22 expands outward through bolt 21 effect, the separation of the portion is colluded to first portion of colluding restriction second, and then has prevented through first stop part 213 and the cooperation of second stop part 223 that locking plate 22 moves and breaks away from bolt 21 relative to bolt 21.

The first blocking portion 213 has a first blocking face 2131 and the second blocking portion 223 has a second blocking face 2231. The direction in which the plug 21 is moved forward relative to the housing 10 to lock between the plug and the receptacle is the locking direction, and the first blocking surface 2131 is located at the outer end of the second blocking surface 2231 in the forward direction. The first stopping surface 2131 and/or the second stopping surface 2231 are inclined in the same direction as the first inclined surface 211, when the plug 21 moves in the unlocking direction, the first stopping surface 2131 interacts with the second stopping surface 2231, the first stopping portion 213 pulls back and lifts the second stopping portion 223, so that the locking plate 22 is restored, the locking plate 22 is restored to cover the plug 21, the plug 21 and the locking plate 22 are re-formed into a rod shape, and the plug 100 can be pulled out from the socket.

The first inclined surface 211 and the second inclined surface 221 are always in contact, the first blocking surface 2131 and the second blocking surface 2231 are also always in contact, when the locking piece is in an initial state without being expanded, the first blocking surface 2131 and the second blocking surface 2231 are in contact, so that the locking piece can be prevented from being loosened (particularly, the locking piece 22 below the plug pin 21) due to gravity, when the plug pin 21 moves, the first inclined surface 211 can directly act on the second inclined surface 221, and the idle stroke of the plug pin 21 is reduced.

Referring to fig. 7-10, fig. 7-10 show schematic structural diagrams of an electrical connection plug according to a second embodiment of the present invention, which mainly differ from the first embodiment in the structure of the plug 21 and the locking piece 22, and other corresponding structures of the first embodiment can be applied to the second embodiment.

In the second embodiment, the locking piece 22 has a U-shaped groove 22c, so that the locking piece 22 is substantially U-shaped, the second inclined surface 221 is disposed in the U-shaped groove 22c, the latch 21 is disposed in the U-shaped groove 22c, and the width of the latch 21 is substantially the same as the width of the U-shaped groove 22c, so that the U-shaped groove 22c can serve as a guide structure when the latch 21 moves back and forth.

Two inner side walls of the U-shaped groove 22c extend with a stopper 223, the stopper 223 is preferably a cylindrical structure, the stopper 223 is used as a second stopper 223, the stopper 223 is spaced apart from the first inclined surface 211, and a second stopper surface 2231 on the stopper 223 is preferably a curved surface, such as an arc surface. The front surface of the first blocking portion 213 of the plug pin 21 is a first inclined surface 211, the rear surface of the first blocking portion 213 of the plug pin 21 is a first blocking surface 2131, the first blocking surface 2131 is substantially parallel to the first inclined surface 211, the first blocking portion 213 is disposed in a gap between the blocking block 223 and the first inclined surface 211, so that the first inclined surface 211 corresponds to the second inclined surface 221, and the first blocking surface 2131 corresponds to the second blocking surface 2231.

When the latch 21 moves forward to lock, the first inclined surface 211 acts on the second inclined surface 221, the front end of the locking piece 22 expands outward, the second blocking surface 2231 is matched with the first blocking surface 2131 to prevent the locking piece 22 from being separated from the latch 21 due to gravity, when the latch 21 moves backward to lock, the second inclined surface 221 moves backward and pulls back the stopper 223 to lift the stopper, and the locking piece 22 recovers.

In a third embodiment (not shown), the latch is rotated by an actuating member (e.g., a knob). The first inclined plane is an inclined plane which uses the mode that the bolt is gradually inclined from the inner diameter to the outer diameter relative to the rotation direction of the shell, the principle of the first inclined plane is similar to that of the bolt when the bolt moves forwards and backwards, and the locking plate is restored when the locking plate is prevented from falling off and unlocked by arranging a corresponding structure, so that the repeated description is omitted. And can be formed with the spacing groove at the rear end of locking plate, realize preventing the locking plate along with the rotatory effect of bolt through the retaining ring that is fixed with the casing and is equipped with the stopper, the stopper is located in the spacing groove. When the bolt rotates, the first inclined plane and the second inclined plane act, and the front end of the locking plate is far away from the bolt and expands outwards.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a locking plug for connect socket, the socket has the jack, including casing, locking Assembly and actuating assembly, the casing is equipped with the electricity connecting point, through the electricity connecting point realize with the electricity of socket is connected, locking Assembly passes through the casing installation, its characterized in that, with when the socket is connected, locking Assembly inserts extremely in the jack, locking Assembly includes bolt and locking plate, the locking plate is located outside the bolt, actuating assembly can drive the bolt motion, the bolt is equipped with first inclined plane, correspond on the locking plate first inclined plane is equipped with the second inclined plane, the bolt for when the casing moves towards first direction of motion, first inclined plane effect the second inclined plane and then make the locking plate atress expand outward and with the socket locking.

2. The locking plug of claim 1, wherein the latch is movable back and forth by the actuating assembly.

3. A locking plug as claimed in claim 2, in which the bolt has a first stop and the locking tab has a second stop, the first stop and the second stop cooperating to prevent the locking tab from splaying relative to the bolt to disengage from the bolt.

4. A locking plug as claimed in claim 3, in which the first stop has a first stop face and the second stop has a second stop face, the first stop face and/or the second stop face being inclined in the same direction as the first inclined face, so that the latch is moved in the reverse direction by the first stop face to act on the second stop face and thereby reset the locking plate.

5. The locking plug of claim 4 wherein said plug pin is recessed from a surface thereof toward an inner front end to form a recess such that said plug pin forms said first stop and said second stop is disposed in said recess.

6. The locking plug of claim 4, wherein the locking tab has a U-shaped slot, the second inclined surface is disposed in the U-shaped slot, the second stop is a stop extending from an inner sidewall of the U-shaped slot, and the first stop is disposed between the stop and the first inclined surface.

7. A locking plug according to any one of claims 4 to 6, wherein the first ramp surface is in constant contact with the second ramp surface and the first blocking surface is also in constant contact with the second blocking surface.

8. A locking plug as claimed in any one of claims 1 to 6, wherein the bolt is formed with a first guide formation and the locking tab is formed with a second guide formation, the first guide formation cooperating with the second guide formation to facilitate guidance of the locking tab when moving relative to the bolt.

9. A locking plug as claimed in any one of claims 1 to 6 wherein said locking assembly constitutes a prong of said locking plug and said PIN or said locking tab is a PIN for electrically connecting said prong to an electrical connection point at said socket.

10. A locking plug as claimed in any one of claims 1 to 6, wherein the housing is provided with a stop, the end of the locking tab being defined by the stop to prevent co-directional movement of the locking tab with the plug pin.