CN103490226A - Electrical connector assembly - Google Patents

Abstract

The invention discloses an electrical connector assembly, which includes a plug connector, a socket connector docked with the plug connector, and a locking device for fixing the plug connector and the socket connector. The plug connector has an outwardly protruding Buckle block, the socket connector is provided with a lock arm that is buckled with the buckle block, and the lock device has an arm that abuts against the outside of the lock arm and a protrusion that holds the lock arm on its inner side part, the electrical connector assembly further includes an anti-loosening device installed on the plug connector, the anti-loosening device has a locking bar, and the locking device has a lock hole engaged with the locking bar.

Description

Electrical Connector Assembly

【Technical field】

The invention relates to an electrical connector assembly, in particular to an electrical connector assembly used in a solar photovoltaic system.

【Background technique】

With the limitation of conventional energy sources and the development of environmental protection trends, there is an upsurge in the development and utilization of solar energy in the world. Solar photovoltaic technology converts solar radiation energy into electrical energy through photoelectric conversion devices. Photoelectric conversion devices usually use the principle of photovoltaic effect of semiconductor devices to perform photoelectric conversion. In the process of photoelectric conversion, electrical connector components, also known as solar connectors, are required. .

The traditional electrical connector assembly used for photoelectric conversion includes a socket part and a plug part, as shown in Chinese patent announcement No. CN201829732U, which discloses an electrical connector assembly, including a plug connector and a socket connector, and the plug connector There is a buckle block protruding outward, and the socket connector is provided with a lock arm that is buckled with the buckle block. The electrical connector assembly also includes a lock device, and the lock device has a The arm portion on the outside of the arm and the protrusion that holds the latch arm on the inside thereof. However, in actual operation, when the locking device is removed with a tool, the locking device will fall off, and may even cause the locking device to be lost.

Therefore, it is indeed necessary to improve the electrical connector assembly to solve the above-mentioned defects in the prior art.

【Content of invention】

The main purpose of the present invention is to provide an electrical connector assembly which can prevent the locking device from falling off after the plug connector is separated from the receptacle connector.

In order to achieve the above object, the present invention adopts the following technical solution: an electrical connector assembly, which includes a plug connector, a socket connector docked with the plug connector, and a locking device for fixing the plug connector and the socket connector, the The plug connector has a buckle block protruding outward, the socket connector is provided with a lock arm that is buckled with the buckle block, and the lock device has an arm that abuts against the outside of the lock arm and locks The clasp arm is held on the protruding part inside it, and the electrical connector assembly also includes an anti-off device installed on the plug connector, the anti-off device has a locking bar, and the locking device has a Snap-on keyhole.

Compared with the prior art, the present invention has the following beneficial effects: the electrical connector assembly has an anti-off device to prevent the locking device from falling off.

【Description of drawings】

FIG. 1 is a three-dimensional assembled view of the electrical connector assembly of the present invention.

FIG. 2 is an exploded perspective view of the plug connector, the locking device and the anti-loosening device in the electrical connector assembly shown in FIG. 1 .

FIG. 3 is an exploded perspective view of the receptacle connector in the electrical connector assembly shown in FIG. 2 .

FIG. 4 is a partially assembled view of the electrical connector assembly shown in FIG. 1 .

FIG. 5 is a view from another perspective of the electrical connector assembly shown in FIG. 4 .

FIG. 6 is a further assembled view of the electrical connector assembly shown in FIG. 4 .

【Detailed ways】

1 to 6, the electrical connector assembly 1000 of the present invention includes a plug connector 100, a receptacle connector 200 docked with the plug connector 100, and a locking device that prevents the plug connector 100 from being separated from the receptacle connector 200. 300 and the anti-loosening device 400 installed on the plug connector 100 and engaged with the locking device 300 to prevent the locking device 300 from falling off. Wherein the plug connector 100 has a buckle block 1151 protruding outward, the socket connector 200 is provided with a lock arm 213 that is buckled with the buckle block 1151, the anti-off device 400 has a lock lever 42, and the lock device 300 has a resisting The arm portion 31 connected to the outer side of the locking arm 213 , the protruding portion 312 holding the locking arm 213 on the inner side thereof, and the locking hole 341 engaged with the locking bar 42 .

Please refer to FIG. 2 , the plug connector 100 includes a plug insulating body 11, a columnar terminal 12 accommodated in the plug insulating body 11, a plug cover 13 assembled at the rear end of the plug insulating body 11, and a plug electrically connected to the columnar terminal 12. Cable 14. The plug insulating body 11 includes a substantially cylindrical main body 112 and a connecting portion 114 extending backward from the main body 112, wherein the diameter of the connecting portion 114 is smaller than that of the main body 112, and the outer surface of the connecting portion 114 is provided with Continuous external thread. A pair of positioning notches 113 are formed through the front end of the main body 112 along the vertical direction, and an inner tube 115 coaxial with the main body 112 is disposed inside the main body 112 . The front end of the inner tube 115 is recessed backward to form a hollow receiving cavity 110 , and a space 1120 is left between the inner tube 115 and the inner wall of the main body 112 . The main body part 112 is recessed from the outside toward its center to form an annular mounting groove 116 for accommodating the locking device 300 and an annular positioning groove 118 for accommodating the locking device 400 . The upper and lower sides of the inner tube 115 are respectively provided with outwardly protruding locking blocks 1151 , and the mounting slot 116 is located behind the locking block 1151 , that is, the mounting slot 116 is closer to the plug cover 13 than the locking block 1151 .

The cylindrical terminal 12 is made of metal material and includes a cylindrical base 121 and a pin 122 extending forward from the base 121 . The pin 122 is elongated and has a smaller diameter than the base 121 . A concave portion 123 is recessed between the pin 122 and the base portion 121 , and a metal ring 17 is sheathed on the concave portion 123 to prevent the column terminal 12 from sliding in the plug insulating body 11 . The metal ring 17 is an unclosed ring structure with a gap on one side.

The plug cover 13 includes a first receiving portion 131 at the front and a second receiving portion 132 at the rear. The cross-section of the first receiving portion 131 is circular, and its inner wall is provided with a plurality of internal threads; the cross-section of the second receiving portion 132 is polygonal, and its maximum diameter is smaller than that of the first receiving portion 131 .

The plug connector 100 also includes a shrink sleeve 15 and a sealing ring 16. The shrink sleeve 15 includes a first blocking portion 151, a number of elastic portions 152 extending backward from the rear surface of the first blocking portion 151, and The front end faces the second blocking portion 153 extending forward and located at the front end. The first blocking portion 151 has a larger diameter than the second blocking portion 153 . The sealing ring 16 is made of rubber material and includes a first fitting portion 161 and a second fitting portion 162 extending backward from the first fitting portion 161 .

The anti-loosening device 400 is made of elastic material, which includes a positioning ring 41 for being sleeved in the positioning groove 118 on the plug connector 100, a transition part 43 formed by partially protruding outward from the outer wall of the positioning ring 41 and The locking bar 42 is bent from the transition part 43 and extends in a direction parallel to the axis of the positioning ring 41. The inner side and the end of the locking bar 42 are provided with a locking block 421. The locking bar 42 and the positioning ring 41 are connected through the transition part 43 .

As shown in Figures 4 to 6, when assembling, put the anti-loosening device 400 on the connecting part 114 on the insulating body 11 and slide it in the axial direction until the main body part 112 of the insulating body 1 is plugged into the position on the plug insulating body 11 In the groove 118, the cylindrical terminal 12 sleeved with the metal ring 17 is assembled into the plug insulating body 11, and the pin 122 is located in the receiving cavity 110 of the plug insulating body 11. The tail of the cylindrical terminal 12 is electrically connected to the cable 14. connect. The second matching portion 162 of the sealing ring 16 is inserted into the accommodating space 150 of the shrink sleeve 15 and fills up the space. At this time, the sealing ring 16 and the shrink sleeve 15 are sleeved on the cable 14, and The first matching portion 161 sliding to the sealing ring 16 is plugged into the connecting portion 114 of the plug insulating body 11 . The plug cover 13 is assembled to the connecting portion 114 at the rear end of the plug insulating body 11 from back to front, and encloses the shrink sleeve 15 therein. The front end of the second blocking portion 153 of the shrink sleeve 15 abuts against the rear end of the first mating portion 161 of the sealing ring 16 , and the front end of the first blocking portion 151 abuts against the rear end of the connecting portion 114 .

As shown in FIG. 3 , the socket connector 200 includes a socket insulating body 21, a tubular terminal 22 housed in the socket insulating body 21, a socket cover 23 assembled on the rear end of the socket insulating body 21, and electrically connected to the tubular terminal 22. Connected cables 24 . The socket insulating body 21 includes a body portion 211 having an external thread at a rear end, a docking portion 212 having a receiving space 210 , and a pair of locking arms 213 located at upper and lower sides. Each locking arm 213 is connected to the body portion 211 through a pair of legs 214 extending from its inner side, and the free end of the front portion of the locking arm 213 is partially cut off along the up and down direction to have a receiving portion 2131. At the same time, the locking arm The other side of 213 opposite to the receiving portion 2131 protrudes toward the axial direction of the mating portion 212 to form a protrusion 2132 .

The tubular terminal 22 is made of metal material, and has a receiving channel 220 at its front end for the column terminal 12 of the plug connector 100 to be inserted into. The tubular terminal 22 includes a cylindrical base portion 221 and a tapered contact portion 222 extending forward from the base portion 121. The contact portion 222 is provided with a number of grooves 2221, and these grooves 2221 divide the contact portion 222 into several elastically outwardly expandable parts. The elastic sheet 2223. A recessed portion 223 is recessed between the contact portion 222 and the base portion 221 , and a metal ring 27 is overlaid on the recessed portion 223 . The metal ring 27 is an unclosed ring structure with a gap on one side.

The socket cover 23 has the same shape and structure as the plug cover 13; the socket connector 200 is similar to the plug connector 100, it has a shrink sleeve 25 and a sealing ring 26, and is compatible with the shrink sleeve 15 and the sealing ring of the plug connector 100. 16 have the same shape and structure, and will not repeat them here. The tubular terminal 22 is assembled into the socket insulating body 21 , the contact portion 222 is accommodated in the receiving space 210 of the docking portion 212 , and the cable 24 is electrically connected to the tail of the tubular terminal 22 . The assembly of the sealing ring 26 , the shrink sleeve 25 , the socket cover 23 and the socket insulating body 21 of the socket connector 200 is the same as that of the plug connector 100 , and will not be repeated here.

The socket connector 200 also includes an annular waterproof gasket 28 sleeved on the rear end of the mating portion 212 of the socket insulating body 21 .

When docking, the receptacle connector 200 is inserted into the receiving cavity 110 of the plug connector 100 along the mating direction, and the columnar terminal 12 of the plug connector 100 is inserted into the tubular terminal 22 of the receptacle connector 200 to form an electrical connection. The pin 122 of the tubular terminal 22 enters the receiving channel 220 of the contact portion 222 to form an electrical contact. The protrusion 2132 at the front end of the locking arm 213 of the receptacle connector 200 goes over the locking block 1151 and locks with it to prevent loosening.

The locking device 300 is substantially C-shaped, and includes a pair of oppositely disposed arm portions 31 and an arc-shaped joint portion 32 connected to the arm portions 31 . The pair of arm portions 31 are arranged horizontally and parallel to each other. The inner side and end position of each arm portion 31 is provided with a protruding portion 312. The outer side of the joint portion 32 protrudes outward to form a handle portion 34 for easy operation. The handle portion 34 A part is recessed inwardly to form a lock hole 341 that cooperates with the lock block 421 on the anti-off device 400 .

When the receptacle connector 200 is docked with the plug connector 100, the locking device 300 is inserted into the annular mounting groove 116 of the plug connector 100 from the side where the locking rod 42 of the anti-off device 400 is located, and the arm of the locking device 300 31 is perpendicular to the locking arm 213 of the receptacle connector 200 , and the arm portion 31 is received on the receiving portion 2131 at the end of the locking arm 213 . When the locking device 300 is fully snapped onto the socket connector 200, the locking arm 213 is snapped inside the protrusion 312 of the arm 31, and then the locking block 421 at the end of the locking bar 42 on the anti-off device 400 is inserted into the lock. Inside the locking hole 341 on the handle portion 34 of the buckle device 300 . At this time, when the receptacle connector 200 is pulled out, the end of the locking arm 213 close to the plug connector 100 cannot be opened outward due to the pressing of the arm portion 31, so that the receptacle connector 200 cannot be pulled out from the plug connector 100. Detachment, the two must be separated using appropriate tools. After the two are separated with a tool, since the lock block 412 on the lock bar 42 on the anti-off device 400 is engaged with the lock hole 341 on the lock device 300, the lock device 300 will not be locked by the receptacle connector 200. It is separated from the plug connector 100 and falls off.

Claims (9)

1. An electrical connector assembly, which includes a plug connector, a socket connector docked with the plug connector, and a locking device for fixing the plug connector and the socket connector, and the plug connector has an outwardly protruding buckle block, the receptacle connector is provided with a lock arm that is buckled with the buckle block, and the lock device has an arm that abuts against the outside of the lock arm and a protrusion that holds the lock arm on its inner side, It is characterized in that: the electrical connector assembly also includes an anti-off device installed on the plug connector, and the anti-off device is connected with the locking device to prevent the locking device from falling off. 2. The electrical connector assembly according to claim 1, wherein the locking device has a locking bar, the locking device has a locking hole engaged with the locking bar, and the end of the locking bar A lock block engaged with the lock hole is provided. 3. The electrical connector assembly according to claim 2, wherein the anti-loosening device further comprises a positioning ring that is looped on the plug connector and a transition formed by a part protruding outward from the outer wall of the positioning ring. part, the lock bar is formed by bending and extending forward from the transition part. 4. The electrical connector assembly according to claim 1, wherein the anti-loosening device is made of elastic material. 5. The electrical connector assembly according to claim 1, wherein the locking device is C-shaped, and also has an arc joint connected to the arm, and the protruding part is formed from the arm. The free end protrudes inwardly. 6 . The electrical connector assembly according to claim 5 , wherein an outer side of the coupling portion protrudes outward to form a holding portion, and the locking hole is formed by partially inwardly recessing the holding portion. 6 . 7 . The electrical connector assembly as claimed in claim 1 , wherein ends of the locking arms are partially cut off to form receiving portions, and the arm portions are supported on corresponding receiving portions. 8 . 8 . The electrical connector assembly according to claim 1 , wherein the plug connector is provided with a positioning groove for receiving the anti-loosening device and an installation groove for receiving the locking device. 9. The electrical connector assembly as claimed in claim 1, wherein the arm of the locking device is perpendicular to the arm of the locking device.

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