A fast plug-in, high-reliability, automatic anti-loosening connector

Abstract

The invention discloses a quick plug-in and pull-out high-reliability automatic anti-loosening connector, comprising a plug body, a socket body and a connecting ring, the socket body comprising a seat shell and a pin insulator assembly, the plug body comprising a head shell and a hole insulator assembly, the hole insulator assembly and the pin insulator assembly are plugged in with each other; the head shell has an annular protrusion at the rear end, a locking sleeve is provided between the inner side of the connecting ring and the outer side of the head shell, the inner side of the connecting ring has an annular step A, the locking sleeve has an annular spring seat at the rear end, the outer side of the annular spring seat has an annular step B corresponding to the annular step A, and a torsion spring is installed between the annular spring seat and the annular protrusion; the outer side of the front end of the head shell is recessed with an annular groove J, and the inner side of the front end of the seat shell is elastically limited with a plurality of steel balls in a circumferentially distributed manner, and all the steel balls correspond to the annular groove J. The invention realizes high efficiency of plugging and separation while preventing uncontrollable mis-separation, and has the advantages of high mechanical life, shear resistance, vibration and shock resistance, and high reliability.

Description

Technical Field

[0001] The invention relates to the technical field of electrical connectors, and in particular to a quick-plug and high-reliability automatic anti-loosening connector. Background Art

[0002] The commonly used electrical connector locking device adopts a threaded or bayonet locking structure. The threaded locking structure is to set internal and external threads on the outer shells of the plug and the socket respectively, and the plug and the socket are locked by tightening the threads; the bayonet locking structure is to set three protruding locking pins on the plug shell and three concave spiral grooves on the socket shell, and the locking pins are screwed into the spiral grooves to achieve the locking of the plug and the socket. The devices of these two locking structures have one or more tightening actions when locking and unlocking, which makes the locking and unlocking of the plug and the socket more troublesome, and is not conducive to the rapid locking and separation of the plug and the socket. With the continuous development of downstream industries, unprecedented requirements have been put forward for the locking method of connectors, requiring connectors to meet extremely high locking reliability while meeting fast plug-in efficiency. The traditional locking method cannot meet the new requirements of users at all. It is urgent to design a connector that can meet both fast plug-in efficiency and extremely high locking reliability. Summary of the invention

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a quick-plug and high-reliability automatic anti-loosening connector, which can achieve high efficiency in plugging and disengaging while preventing uncontrollable accidental separation, and the anti-loosening is automatically achieved by the structure without the intervention of other anti-loosening structures; when plugging in, just hold the connecting ring and push the plug into the socket to achieve locking, and after locking, due to the constraints of the structure, there will be no uncontrollable unlocking due to external forces such as vibration, accidental touch, interference with other parts, etc.; when unlocking, the connecting ring must be held and rotated a small angle before unplugging the plug; after the plug is unplugged, all mechanisms are automatically reset, and no other additional operations are required to achieve re-plugging.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] A quick-plug and high-reliability automatic anti-loosening connector, comprising a plug body, a socket body and a connecting ring, wherein the socket body comprises a seat shell and a pin insulator assembly installed inside the seat shell, and the plug body comprises a head shell and a hole insulator assembly installed inside the head shell, the hole insulator assembly and the pin insulator assembly cooperate and plug in with each other; the rear end of the head shell has an annular protrusion, the inner side of the rear end of the connecting ring has an annular groove C corresponding to the annular protrusion, a limiting hoop is installed in the annular groove C, the limiting hoop is circular in shape as a whole, the limiting hoop has a protruding connecting end, and the annular groove C is provided with a vertical stop corresponding to the connecting end. Groove B, an annular groove K matching with the limiting hoop is opened on the end face of the annular protrusion; a locking sleeve is provided between the inner side of the connecting ring and the outer side of the head shell, the inner side of the connecting ring has an annular step A, the rear end of the locking sleeve has an annular spring seat, the outer side of the annular spring seat has an annular step B corresponding to the annular step A, and a torsion spring is installed between the annular spring seat and the annular protrusion; an annular groove J is recessed on the outer side of the front end of the head shell, and a number of steel balls are elastically limited in a circumferentially distributed manner on the inner side of the front end of the seat shell, all of which correspond to the annular groove J, and an annular plug-in gap space is provided between the front end of the connecting ring and the front end of the head shell.

[0006] In order to better implement the present invention, the limiting hoop further has three straight sections, and the end surface of the annular protrusion further has three planar matching sections, and the three planar matching sections correspond to the three straight sections of the limiting hoop.

[0007] Preferably, the pin insulator assembly includes a pin insulator and a plurality of pins mounted on the pin insulator, an insulating pressure plate A is mounted at the rear end of the pin insulator, a sealing body A is mounted at the rear end of the insulating pressure plate A, and a pin wire connected to the pin is arranged inside the sealing body A.

[0008] Preferably, a sealing gasket is installed at the front end of the needle insulator, a gear sleeve assembly A is assembled inside the needle insulator, the gear sleeve assembly A includes a plurality of gear sleeves A, the gear sleeves A are correspondingly and tightly plugged into the plug pins, a sealing ring matching the needle insulator assembly is installed inside the seat shell, and a fixing ring A is provided between the inner wall of the seat shell and the needle insulator assembly.

[0009] Preferably, the hole insulator assembly includes a hole insulator and a plurality of jacks installed on the hole insulator, an insulating pressure plate B is installed at the rear end of the hole insulator, a sealing body B is installed at the rear end of the insulating pressure plate B, and a jack wire connected to the jack is provided inside the sealing body B.

[0010] Preferably, a gear sleeve assembly B is assembled inside the hole insulator, and the gear sleeve assembly B includes a plurality of gear sleeves B, and the gear sleeves B are tightly plugged into the corresponding jacks, and a fixing ring B is provided between the inner wall of the head shell and the hole insulator assembly.

[0011] Preferably, a shielding ring is mounted in the middle of the head shell, and the shielding ring is located between the annular spring seat and the annular groove J; a plurality of axially arranged convex keys H are convexly protruded on the outer side of the front end of the head shell, and a concave key Q cooperating with the convex key H is recessed on the inner side of the front end of the seat shell.

[0012] Preferably, at least one vertical groove I is axially opened on the outer side of the head shell, and a convex key F movably engaged with the vertical groove I is protruded on the inner side of the locking sleeve.

[0013] Preferably, two vertical grooves I are symmetrically provided on the outer side of the head shell, and the vertical groove I has a first end side and a second end side. Two convex keys F are provided on the inner side of the locking sleeve, and the two convex keys F are symmetrically arranged on the inner side of the annular spring seat of the locking sleeve.

[0014] Preferably, a plurality of vertical grooves A are axially provided on the inner side of the connecting ring, and a convex key D matching with the vertical groove A is provided on the outer side of the annular spring seat of the locking sleeve; a hole E is provided on the end face of the annular spring seat, and a hole G is provided on the end face of the annular raised portion; one end of the torsion spring is connected and fixed in the hole E, and the other end of the torsion spring is connected and fixed in the hole G.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0016] (1) The present invention realizes efficient plugging and disengagement while preventing uncontrollable accidental disengagement, and the structure automatically realizes anti-loosening without the intervention of other anti-loosening structures; when plugging, the plug can be locked by simply holding the connecting ring and pushing it into the socket. After locking, due to the constraints of the structure, uncontrollable unlocking will not occur due to external forces such as vibration, accidental touch, interference with other parts, etc.; when unlocking, the connecting ring must be rotated a small angle before unplugging the plug; after the plug is unplugged, all mechanisms are automatically reset, and plugging can be achieved again without other additional operations.

[0017] (2) The present invention has the advantages of long mechanical life, resistance to shearing, resistance to vibration and impact, high reliability and low failure rate. To achieve the purpose of preventing loosening, the device must first be rotated to a specified angle when unlocking. Unlocking due to other external forces can be avoided.

[0018] (3) The connecting ring and the locking sleeve of the present invention must rotate together in order to transmit the torque applied to the locking ring by the torsion spring to the connecting ring, so as to realize automatic reset of the connecting ring after the external force is released.

[0019] (4) When the plug and socket of the present invention are in a locked state, the interior of the plug and socket is isolated from the outside world, and can be sealed to prevent salt spray from corroding the interior, and to prevent water and unnecessary objects from short-circuiting, and to meet the insulation performance requirements in harsh environments such as low pressure.

[0020] (5) The limiting hoop, connecting ring and head shell of the present invention cooperate so that when the connecting ring is rotated to a specific angle under the action of external force, the limiting hoop can withdraw from the annular groove of the head shell, thereby realizing the axial displacement of the connecting ring relative to the head shell; after the external force is released, the limiting hoop is reset to the annular groove of the head shell under the action of the torsion spring, thereby realizing the locking of the axial displacement between the connecting ring and the head shell.

[0021] (6) The torsion spring, the head shell and the locking sleeve of the present invention cooperate to rotate and reset between two positions; the torsion spring, the locking sleeve and the connecting ring cooperate to achieve axial displacement within a certain range between the connecting ring and the locking sleeve and limit relative rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the connection between the plug body and the socket body of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure after the plug body and the socket body of the present invention are plugged in;

[0024] Figure 3 is a schematic diagram of the structure of the socket body;

[0025] Figure 4 is a schematic diagram of the structure of the plug body;

[0026] Figure 5 An exploded schematic diagram of a hole insulator assembly;

[0027] Figure 6 is a schematic diagram of the three-dimensional structure of the connecting ring;

[0028] Figure 7 for Figure 6 sectional view of

[0029] Figure 8 It is a structural schematic diagram of the locking sleeve;

[0030] Fig. 9 It is a schematic diagram of the three-dimensional structure of the head shell;

[0031] Fig.10 for Fig. 9 Schematic side view of

[0032] Fig.11 It is a schematic diagram of the structure of the limiting hoop;

[0033] Fig.12 It is a structural schematic diagram of the front end surface of the seat shell.

[0034] The names corresponding to the reference numerals in the accompanying drawings are:

[0035] 1-sealing ring, 2-seat housing, 21-concave key Q, 3-steel ball, 4-sealing pad, 5-needle insulator, 6-tooth sleeve A, 7-pin, 8-insulating pressure plate A, 9-sealing body A, 10-fixing ring A, 61-tooth sleeve B, 81-insulating pressure plate B, 91-sealing body B, 101-fixing ring B, 11-connecting ring, 111-vertical groove A, 112-vertical groove B, 113-annular groove C, 12-locking sleeve, 120-annular spring seat, 121-convex key D, 12 2-key F, 123-hole E, 13-torsion spring, 14-shielding ring, 15-head shell, 151-vertical groove I, 1511-first end side, 1512-second end side, 152-key H, 153-hole G, 154-plane matching part, 155-annular protrusion, 1551-annular groove K, 156-annular groove J, 16-limiting hoop, 161-connecting end, 162-straight section, 17-hole insulator, 18-jack, 19-plug-in gap space. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with embodiments:

[0037] Example

[0038] like Figures 1 to 12 As shown, a fast plug-in and pull-out high-reliability automatic anti-loosening connector includes a plug body, a socket body and a connecting ring 11. The socket body includes a base housing 2 and a pin insulator assembly installed inside the base housing 2. The plug body includes a head housing 15 and a hole insulator assembly installed inside the head housing 15. The hole insulator assembly and the pin insulator assembly are plugged in with each other. The head housing 15 has an annular protrusion 155 at the rear end, and the inner side of the rear end of the connecting ring 11 has an annular groove C113 corresponding to the annular protrusion 155. A limiting hoop 16 is installed in the annular groove C113. The limiting hoop 16 is circular in shape. The limiting hoop 16 has a protruding connection end 161. The annular groove C113 is provided with a vertical groove B112 corresponding to the connection end 161. The end surface of the annular protrusion 155 is provided with an annular groove K1551 that matches the limiting hoop 16. A locking sleeve 12 is provided between the inner side of the connecting ring 11 and the outer side of the head shell 15. The inner side of the connecting ring 11 has an annular step A. The rear end of the locking sleeve 12 has an annular spring seat 120. The outer side of the annular spring seat 120 has an annular step B corresponding to the annular step A. A torsion spring 13 is installed between the annular spring seat 120 and the annular protrusion 155. An annular groove J156 is recessed on the outer side of the front end of the head shell 15. A plurality of steel balls 3 are elastically limited and distributed in a circumferential manner on the inner side of the front end of the seat shell 2. All the steel balls 3 correspond to the annular groove J156. An annular plug-in gap space 19 is provided between the front end of the connecting ring 11 and the front end of the head shell 15.

[0039] The front end of the head housing 15 of the present invention is the front end of the plug body (the front end of the plug body is the end that is plugged into the socket body, and the front end of the head housing 15 is the end that is plugged into the seat housing 2, that is, Figure 1 The left end of the plug body in the middle), the rear end of the head shell 15 is the rear end of the plug body (the rear end of the plug body is the end relatively far away from the front end of the plug body, and the rear end of the head shell 15 is the end relatively far away from the front end of the head shell 15, that is, Figure 1 The front end of the socket body 2 is the front end of the socket body (the front end of the socket body is the end that is plugged into the plug body, and the front end of the socket body 2 is the end that is plugged into the front end of the head housing 15, that is, Figure 1 The right end of the socket body), the rear end of the socket body 2 is the rear end of the socket body (the rear end of the socket body is the end relatively far away from the front end of the socket body, and the rear end of the socket body 2 is the end relatively far away from the front end of the socket body 2, that is, Figure 1 left end of the socket body).

[0040] like Figure 4 , Fig.10 , Fig.11 As shown, the limiting hoop 16 and the head shell 15 of this embodiment preferably adopt the following technical solution: the limiting hoop 16 also has three straight sections 162, and the end face of the annular protrusion 155 also has three planar matching parts 154, and the three planar matching parts 154 correspond to the three straight sections 162 of the limiting hoop 16.

[0041] The preferred technical scheme of the pin insulator assembly structure of the present invention is as follows: the pin insulator assembly includes a pin insulator 5 and a plurality of pins 7 mounted on the pin insulator 5, an insulating pressure plate A8 is mounted on the rear end of the pin insulator 5, a sealing body A9 is mounted on the rear end of the insulating pressure plate A8, and a pin conductor connected to the pin 7 is arranged inside the sealing body A9. A sealing gasket 4 is mounted on the front end of the pin insulator 5, a gear sleeve assembly A is assembled inside the pin insulator 5, the gear sleeve assembly A includes a plurality of gear sleeves A6, and the gear sleeves A6 are correspondingly fastened and plugged with the pins 7, a sealing ring 1 matching the pin insulator assembly is mounted inside the seat housing 2, and a fixing ring A10 is arranged between the inner wall of the seat housing 2 and the pin insulator assembly.

[0042] The preferred technical scheme of the hole insulator assembly structure of the present invention is as follows: the hole insulator assembly includes a hole insulator 17 and a plurality of jacks 18 installed on the hole insulator 17, an insulating pressure plate B81 is installed at the rear end of the hole insulator 17, a sealing body B91 is installed at the rear end of the insulating pressure plate B81, and a jack wire connected to the jack 18 is arranged inside the sealing body B91. A tooth sleeve assembly B is assembled inside the hole insulator 17, and the tooth sleeve assembly B includes a plurality of tooth sleeves B61, which are tightly plugged with the jack 18, and a fixing ring B101 is arranged between the inner wall of the head shell 15 and the hole insulator assembly.

[0043] The head shell 15 of the present invention is provided with a shielding ring 14 in the middle, and the shielding ring 14 is located between the annular spring seat 120 and the annular groove J156. The front end of the head shell 15 is provided with a plurality of axially arranged convex keys H152 (the number of convex keys H152 in this embodiment is five), and the front end of the seat shell 2 is provided with a concave key Q21 (the number of concave keys Q21 in this embodiment is five) that cooperates with the convex key H152. The head shell 15 is provided with at least one vertical groove I151 axially on the outside, and the locking sleeve 12 is provided with a convex key F122 that movably cooperates with the vertical groove I151 on the inside. Two vertical grooves I151 are symmetrically provided on the outside of the head shell 15, and the vertical groove I151 has a first end side 1511 and a second end side 1512. Two convex keys F122 are provided on the inside of the locking sleeve 12, and the two convex keys F122 are symmetrically arranged on the inside of the annular spring seat 120 of the locking sleeve 12.

[0044] The connecting ring 11 of the present invention is provided with a plurality of vertical grooves A111 axially on the inner side, and the annular spring seat 120 of the locking sleeve 12 is provided with a convex key D121 matching with the vertical groove A111 on the outer side. The end surface of the annular spring seat 120 is provided with a hole E123, and the end surface of the annular protrusion 155 is provided with a hole G153. One end of the torsion spring 13 is connected and fixed in the hole E123, and the other end of the torsion spring 13 is connected and fixed in the hole G153.

[0045] The structural principle of the socket body of this embodiment is as follows: the sealing ring 1 is installed in the groove of the seat shell 2, the seat shell 2 has a transverse hole for assembling the steel ball 3, the steel ball 3 is installed in the transverse hole of the seat shell 2, and the riveting interface of the seat shell 2 is riveted so that the steel ball 3 can move radially between a certain position in the transverse hole of the seat shell without falling out; the tooth sleeve A6 is installed in the hole of the pin insulator 5, and then the small boss of the insulating pressure plate A8 blocks the tooth sleeve A6 so that the tooth sleeve A6 cannot fall out axially. The interface gasket A4 and the pin insulator 5, the pin insulator 5 and the insulating pressure plate A8, and the insulating pressure plate A8 and the sealing body A9 are bonded with glue; after bonding, the interface gasket 4, the pin insulator 5, the insulating pressure plate A8, the sealing body A9 and the tooth sleeve A6 form a pin insulator assembly. The convex key of the pin insulator 5 is installed in the concave key in the seat shell 2 to prevent the rotation between the pin insulator assembly and the seat shell 2; the fixing ring 10 mechanically fixes the pin insulator assembly to the seat shell 2 by buckling the step in the cavity of the seat shell 2. The pin 7 (crimped wire before use) passes through the hole of the sealing body A9 and is installed in the pin insulator assembly. The gear sleeve A6 fixes the pin 7 to prevent the pin 7 from axial withdrawal. The through hole of the sealing body A9 tightly wraps the outer rubber of the wire to achieve the sealing of the tail of the socket with the outside world. The seat shell 2 is designed with external threads and anti-rotation teeth, which can be used with the wire tail accessories. The screws can be installed and fixed to the chassis panel through the four through holes on the flange of the seat shell 2.

[0046] The plug body structure principle of this embodiment is as follows: the tooth sleeve B61 is installed in the hole of the hole insulator 17, and the small boss of the insulating pressure plate B81 blocks the tooth sleeve B61, so that the tooth sleeve B61 cannot be axially disengaged; the hole insulator 17 and the insulating pressure plate B81, and the insulating pressure plate B81 and the sealing body B91 are bonded with glue; after bonding, the hole insulator 17, the insulating pressure plate B81, the sealing body B91 and the tooth sleeve B61 form a hole insulator assembly. The convex key of the hole insulator 17 is installed in the concave key of the head shell 15 to prevent the hole insulator assembly from rotating with the head shell 15; the fixing ring B101 mechanically fixes the hole insulator assembly to the head shell 15 by buckling the step in the cavity of the head shell 15; the jack 18 (the wire is crimped before use) passes through the hole of the sealing body 9 and is installed in the hole in the insulator assembly, and the tooth sleeve B61 fixes the jack 18 to prevent the jack 18 from axial withdrawal; the through hole of the sealing body B91 tightly wraps the outer rubber of the wire to achieve the sealing of the tail of the plug with the outside world. The shielding ring 14 is installed in the outer groove of the head shell 15; the head shell 15 is designed with external threads and anti-rotation teeth to be used with the tail accessories of the wire protection. One end of the torsion spring 13 is installed in the hole G153 of the head shell 15, and the other end is installed in the hole E123 of the locking sleeve 12. The torsion spring 13 provides elastic force and torque between the head shell 15 and the locking sleeve 12. The convex key F122 of the locking sleeve 12 cooperates with the vertical groove I 151 of the head housing 15, and the convex key F122 can only rotate in the vertical groove I 151. Under the torsion torque of the torsion spring 13, the convex key F122 leans against the second end side 1512 of the vertical groove I 151. The limiting hoop 16 is installed in the annular groove C113 of the connecting ring 11; the connecting end 161 of the limiting hoop 16 is installed in the vertical groove B112 of the connecting ring 11, so that the limiting hoop 16 and the connecting ring 11 cannot rotate relative to each other. The straight section 162 of the limiting hoop 16 falls into the annular groove K1551 of the head housing 15. The head shell 15 has three planar matching parts 154, and the three planar matching parts 154 correspond to the three straight sections 162 of the limiting hoop 16. When the three straight sections 162 of the limiting hoop 16 rotate to the same position as the three planar matching parts 154, the limiting hoop 16 can be moved from the annular groove K1551 of the head shell 15 to the rear end (i.e. Figure 1 The convex key D121 of the locking sleeve 12 cooperates with the vertical groove A111 of the connecting ring 11, so that the locking sleeve 12 and the connecting ring 11 cannot rotate relative to each other.

[0047] The principle of the plugging and separating mechanism of the present invention is as follows:

[0048] (1) Before the plug and the socket are plugged in: the limiting hoop 16 is in the annular groove C113 of the connecting ring 11, the straight section 162 of the limiting hoop 16 is stuck in the annular groove K1551 of the head shell 15, and the positions of the three straight sections 162 of the limiting hoop 16 and the three flat matching parts 154 of the head shell 15 are staggered, and the limiting hoop 16 cannot be moved from the annular groove K1551 of the head shell to the rear end (i.e. Figure 1The right end of the head shell 15 is withdrawn. The torsion spring 13 is compressed between the head shell 15 and the locking sleeve 12; under the action of the elastic force of the torsion spring 13, the step surface of the locking sleeve 12 is pressed against the step surface of the connecting ring 11; under the action of the torsion torque of the torsion spring 13, the convex key F122 of the locking sleeve 12 is against the second end side 1512 of the vertical groove I 151 of the head shell 15. At this time, the connecting ring 11 and the head shell 15 will not rotate relative to each other. Holding the connecting ring 11 and rotating it by hand can drive the head shell 15 to rotate together, so that the 5 convex keys H152 of the head shell 15 can find the 5 concave keys Q21 of the seat shell 2, so as to achieve the positioning and plugging before the head and the seat are plugged in.

[0049] (2) The plug and socket plugging process: The steel ball 3 pushes the locking sleeve 12 to compress the torsion spring 13; the inner wall of the seat shell 2 compresses the shielding ring 14; the five convex keys H152 of the head shell 15 are inserted into the five concave keys Q21 of the seat shell 2 to realize the positioning function of the head and socket plugging.

[0050] (3) The plug and the socket are plugged in place: all the steel balls 3 fall into the annular groove J156 of the head shell 15; the locking sleeve 12 is reset under the elastic force of the torsion spring 13 and is again close to the step surface of the connecting ring 11; the inner surface of the locking sleeve 12 blocks the steel balls 3, so that the steel balls 3 cannot be withdrawn from the annular groove J156 of the head shell 15; the plug and the socket are plugged in and fixed; the inner wall of the seat shell 2 compresses the shielding ring 14; at this time, the pin 7 and the socket 8 are plugged in and connected; the head shell 15 and the seat shell 2 are connected through the shielding ring 14; the head shell 15 compresses the sealing ring 1 to achieve the sealing between the plug and the socket; the conical boss of the sealing gasket 4 is squeezed tightly with the conical concave surface of the hole insulator 17, and each hole position is sealed.

[0051] (4) Separation process of plug and socket: Hold the connecting ring 11 by hand and rotate it clockwise until it stops. At this time, the hand overcomes the torque of the torsion spring 13 and drives the connecting ring 11, the locking sleeve 12 and the limiting hoop 16 to rotate until the convex key F122 of the locking sleeve 12 is at the first end side 1511 of the vertical groove I 151 of the head shell 15. Then, pull the connecting ring 11 to the rear end (press the Figure 1 At this time, the three straight sections 162 of the limiting hoop 16 rotate to correspond to the three flat matching sections 154 of the head shell 15, and the annular groove K1551 restricts the limiting hoop 16 from moving to the rear end (by Figure 1 The restriction of moving to the right is released, and the connecting ring 11 drives the locking sleeve 12 to the rear end (press Figure 1 The locking sleeve 12 releases the constraint on the steel ball 3, and the steel ball 3 leaves the annular groove J156 of the head shell, and the constraints on the plug and socket are released; continue to move to the rear end (press Figure 1 Pull the connecting ring 11 to the right, and the plug will move with the connecting ring 11 to the rear end (press Figure 1After separation, loosen the connecting ring 11 by hand, and push the locking sleeve 12 to rotate counterclockwise (with the head shell 15 as the reference system) under the torque of the torsion spring 13 until the convex key F122 rests against the second end side 1512 of the vertical groove I 151, and the locking sleeve 12 pushes the connecting ring 11 to rotate counterclockwise, and the connecting ring 11 drives the limiting hoop 16 to rotate counterclockwise, and the positions of the three straight sections 162 of the limiting hoop 16 and the three flat matching parts 154 of the head shell 15 are staggered. At the same time, under the elastic force of the torsion spring 13, the locking sleeve 12 is pushed to the front end (press Figure 1 The locking sleeve 12 pushes the connecting ring 11 to the front end (press Figure 1 To move to the left), the three straight sections 162 of the limiting hoop 16 are opened by the conical surface L of the head shell 15 (the rear end side of the head shell 15 has a conical surface L), allowing the limiting hoop 16 to slide into the annular groove K1551 of the head shell 15 to achieve reset.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick plug-in, high-reliability, automatic anti-loosening connector, characterized in that: The invention comprises a plug body, a socket body and a connecting ring (11), wherein the socket body comprises a base shell (2) and a pin insulator assembly installed inside the base shell (2), and the plug body comprises a head shell (15) and a hole insulator assembly installed inside the head shell (15), wherein the hole insulator assembly and the pin insulator assembly are plugged in and matched with each other; the head shell (15) has an annular protrusion (155) at the rear end, and the connecting ring (11) has an annular groove C (113) corresponding to the annular protrusion (155) on the inner side of the rear end, and a limiting hoop (16) is installed in the annular groove C (113), wherein the limiting hoop (16) is in a circular shape as a whole, and has a protruding connecting end (161), wherein the annular groove C (113) is provided with a vertical groove B (112) corresponding to the connecting end (161) for limiting, and the end surface of the annular protrusion (15 ... An annular groove K (1551) is provided to match the limiting hoop (16); a locking sleeve (12) is provided between the inner side of the connecting ring (11) and the outer side of the head shell (15); the inner side of the connecting ring (11) has an annular step A; the rear end of the locking sleeve (12) has an annular spring seat (120); the outer side of the annular spring seat (120) has an annular step B corresponding to the annular step A; a torsion spring (13) is installed between the annular spring seat (120) and the annular protrusion (155); an annular groove J (156) is provided in a recessed manner on the outer side of the front end of the head shell (15); a plurality of steel balls (3) are provided on the inner side of the front end of the seat shell (2) in a circumferentially distributed manner for elastic limiting; all the steel balls (3) correspond to the annular groove J (156); and an annular plug-in gap space (19) is provided between the front end of the connecting ring (11) and the front end of the head shell (15).

2. A quick-plug, high-reliability, automatic anti-loosening connector according to claim 1, characterized in that: The limiting hoop (16) also has three straight sections (162), and the end surface of the annular protrusion (155) also has three planar matching sections (154), and the three planar matching sections (154) correspond to the three straight sections (162) of the limiting hoop (16).

3. A quick plug-in, high-reliability, automatic anti-loosening connector according to claim 1, characterized in that: The pin insulator assembly comprises a pin insulator (5) and a plurality of plug pins (7) mounted on the pin insulator (5); an insulating pressure plate A (8) is mounted on the rear end of the pin insulator (5); a sealing body A (9) is mounted on the rear end of the insulating pressure plate A (8); and a plug pin wire connected to the plug pin (7) is arranged inside the sealing body A (9).

4. A quick plug-in, high-reliability, automatic anti-loosening connector according to claim 3, characterized in that: The front end of the needle insulator (5) is equipped with a sealing gasket (4), and the interior of the needle insulator (5) is equipped with a gear sleeve assembly A, and the gear sleeve assembly A includes a plurality of gear sleeves A (6). The gear sleeves A (6) are correspondingly fastened and plugged with the plug pins (7). A sealing ring (1) that matches the needle insulator assembly is installed inside the seat shell (2), and a fixing ring A (10) is provided between the inner wall of the seat shell (2) and the needle insulator assembly.

5. A quick plug-in, high-reliability, automatic anti-loosening connector according to claim 1, characterized in that: The hole insulator assembly comprises a hole insulator (17) and a plurality of jacks (18) mounted on the hole insulator (17); an insulating pressure plate B (81) is mounted on the rear end of the hole insulator (17); a sealing body B (91) is mounted on the rear end of the insulating pressure plate B (81); and a jack wire connected to the jack (18) is arranged inside the sealing body B (91).

6. A quick plug-in, high-reliability, automatic anti-loosening connector according to claim 5, characterized in that: A gear sleeve assembly B is assembled inside the hole insulator (17), and the gear sleeve assembly B includes a plurality of gear sleeves B (61). The gear sleeves B (61) are tightly plugged into the corresponding insertion holes (18), and a fixing ring B (101) is provided between the inner wall of the head shell (15) and the hole insulator assembly.

7. A quick plug-in, high-reliability, automatic anti-loosening connector according to claim 1, characterized in that: A shielding ring (14) is sleeved on the middle of the head shell (15), and the shielding ring (14) is located between the annular spring seat (120) and the annular groove J (156); a plurality of axially arranged convex keys H (152) are convexly provided on the outer side of the front end of the head shell (15), and a concave key Q (21) that cooperates with the convex key H (152) is concavely provided on the inner side of the front end of the seat shell (2).

8. A quick plug-in, high-reliability, automatic anti-loosening connector according to claim 1, characterized in that: At least one vertical groove I (151) is axially opened on the outer side of the head shell (15), and a protrusion F (122) movably matched with the vertical groove I (151) is protruded on the inner side of the locking sleeve (12).

9. A quick plug-in, high-reliability, automatic anti-loosening connector according to claim 8, characterized in that: Two vertical grooves I (151) are symmetrically arranged on the outer side of the head shell (15), and the vertical groove I (151) has a first end side (1511) and a second end side (1512). Two convex keys F (122) are arranged on the inner side of the locking sleeve (12), and the two convex keys F (122) are symmetrically arranged on the inner side of the annular spring seat (120) of the locking sleeve (12).

10. A quick plug-in, high-reliability, automatic anti-loosening connector according to claim 1, characterized in that: A plurality of vertical grooves A (111) are axially arranged on the inner side of the connecting ring (11); a convex key D (121) matching with the vertical groove A (111) is arranged on the outer side of the annular spring seat (120) of the locking sleeve (12); a hole E (123) is formed on the end surface of the annular spring seat (120); a hole G (153) is formed on the end surface of the annular protrusion (155); one end of the torsion spring (13) is connected and fixed in the hole E (123), and the other end of the torsion spring (13) is connected and fixed in the hole G (153).

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