CN113161837A

CN113161837A - Prevent that plug from locking soon that can't insert again and close connector assembly

Info

Publication number: CN113161837A
Application number: CN202110436753.7A
Authority: CN
Inventors: 叶楠; 叶鹏; 孙荣卿; 赵璟星; 严菲菲; 殷志根; 李竹法
Original assignee: China North Industries Group Hanglian Technology Co Ltd
Current assignee: China North Industries Group Hanglian Technology Co Ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-07-23
Anticipated expiration: 2041-04-22
Also published as: CN113161837B

Abstract

The invention relates to a twist lock connector for preventing a plug from being locked automatically and being inserted again, which comprises a socket shell and a plug assembly, wherein the plug assembly comprises a head shell, a thread sleeve, a snap spring, an outer connecting sleeve, an inner connecting sleeve, a locking sleeve, a push rod, an inserting steel ball, a spring, a guide steel ball, an outer check ring, an outer corrugated ring, an anti-jumping ring, an inner check ring and an inner corrugated spring, and a plurality of inner locking clamping seats are uniformly distributed on the circumference of an inner port of an inner ring of the locking sleeve; a plurality of outer locking clamping seats are uniformly distributed on the periphery of the inserting end of the socket shell, the inner locking clamping seat can be matched and penetrated between two adjacent outer locking clamping seats, and an annular locking gap for accommodating the inner locking clamping seat is reserved between the outer locking clamping seat and the seat plate of the socket shell in the axial direction. The plug has compact structure, can prevent the plug from being locked and can not be plugged again when not plugged, and effectively improves the use reliability.

Description

Prevent that plug from locking soon that can't insert again and close connector assembly

Technical Field

The invention relates to an electric connector structure, in particular to a twist lock connector assembly for preventing a plug from being self-locked and being incapable of being inserted.

Background

The GJB599 IV series circular electric connector connecting mechanism adopts a clamping type quick connection, only rotates 90 degrees and can be quickly connected and separated, an EMI-preventing grounding spring is arranged in a plug, and the grounding spring is different from a series III grounding spring in that 5 key grooves are arranged, so that electromagnetic leakage can be prevented. In the 80 s intense debate was made in the naval and air force departments of the united states, the focus of the debate was precisely its breechblock type structure, and due to accidental causes, such as vibration or movement of heavy-duty cables connecting plugs, the plug locking mechanisms moved relative to each other and locked and were no longer able to be plugged, affecting reliability. The naval department approves the structure, and the naval considers that the above situation occurs and rotates reversely once. However, air force always refuses to use the series IV, and the production and the use of the series IV are greatly influenced due to the objection of air force.

Disclosure of Invention

The invention aims to provide a twist lock connector assembly which can prevent a plug from being self-locked and being incapable of being inserted when the plug is not inserted, and effectively improve the use reliability.

The technical scheme adopted by the invention is as follows: the utility model provides a prevent that plug self-locking can't insert the spin lock connector who closes again, includes socket casing and plug subassembly, its characterized in that: the plug component comprises a head shell, a thread sleeve, clamp springs, an outer connecting sleeve, an inner connecting sleeve, a locking sleeve, a push rod, an inserting steel ball, a spring, a guide steel ball, an outer retainer ring, an outer corrugated ring, an anti-jumping ring, an inner retainer ring and an inner corrugated spring, wherein the periphery of the inner end of the head shell is screwed with the thread sleeve through four threads, the periphery of the thread sleeve is inserted into the outer end of the inner cavity of the locking sleeve through an axial key, the inner cavity of the outer end of the locking sleeve is inwards limited by the inner retainer ring and sleeved on the anti-jumping ring and the inner corrugated ring on the head shell and abutted against the outer end of the thread sleeve, the middle part of the inner ring of the locking sleeve is provided with a clamp spring groove of 3/4 circles, two end points and a middle point of the clamp spring groove are provided with clamp head grooves, two adjacent clamp head grooves are clamped with spring feet of the clamp springs arranged in the clamp spring groove, the middle part of the clamp spring is inwards provided with clamp keys which are correspondingly arranged in the key grooves of the four head threads at the inner end of the outer periphery of the head shell, a plurality of the inner ring of the locking sleeve are uniformly distributed on the circumference of the inner ring, the inner locking clamping seat is provided with a push hole penetrating through the inside and the outside of the locking sleeve, the inner opening of the push hole is contracted, an inserting steel ball which is partially separated from the inner opening of the push hole is arranged in the push hole, the inserting steel ball tightly abuts against a push rod connected with the locking sleeve through an outer opening of the push hole, the outer end of the push rod is provided with a wedge head facing outwards along the axis, the wedge head tightly abuts against the outer ring of the locking sleeve, the inner wedge surface of an inner connecting sleeve inserted through an axial key is in a state that the wedge head radially outwards moves, the inner connecting sleeve is pushed to outwards move through the inner wedge surface, the outer end of the inner connecting sleeve tightly abuts against the rear end of the locking sleeve through an outer corrugated ring, the outer circumference of the inner connecting sleeve is sleeved with the inner end of an inner limiting locking sleeve, the outer end of the outer connecting sleeve is limited by an outer retaining ring, the inner ring of the outer connecting sleeve is axially provided with a plurality of arc guide grooves and a plurality of inner connecting blocks arranged at intervals along the axial direction and the circumferential direction matrix, each arc guide groove is positioned at the middle position of the inner connecting blocks at both sides, the inner connecting block is provided with a plurality of guide holes and a plurality of the extension holes along the axial direction, The inner connecting block and the outer connecting block are axially staggered in a way that the inner connecting sleeve moves outwards under the push of the ejector rod to enable the inner connecting block and the outer connecting block to be inserted and combined axially, and the inner connecting block and the outer connecting block are provided with overlapped parts in the circumferential direction and can rotate synchronously; a plurality of outer locking clamping seats are uniformly distributed on the periphery of the inserting end of the socket shell, the inner locking clamping seat can be matched and penetrated between two adjacent outer locking clamping seats, and an annular locking gap for accommodating the inner locking clamping seat is reserved between the outer locking clamping seat and the seat plate of the socket shell in the axial direction.

Furthermore, a sealing ring which tightly abuts against the socket shell and is inserted into the port part is arranged in the middle of the inner ring of the head shell.

Furthermore, the middle part of the inner ring of the head shell is arranged on the grounding spring which is tightly propped against the periphery of the inserting end of the socket shell.

Furthermore, the outer ring of the outer connecting sleeve is of an axial prism anti-skid or net-shaped anti-skid structure.

When the plug assembly is not inserted into the socket shell, the inserting steel ball falls down under the action of self weight to push an inner opening of the lower push hole and partially extends out, a wedge head at the outer end of the push rod is attached to a wedge surface and does not push the inner connecting sleeve to move outwards, the matrix arrangement of the outer connecting blocks on the inner connecting sleeve and the inner connecting blocks on the outer connecting sleeve is axially staggered, the inner connecting sleeve cannot be driven by rotating the outer connecting sleeve, at the moment, a locking structure in the plug does not act, self-locking occurs in the plug when no loading vibration or movement exists outside the outer connecting sleeve, and the reliability of the plug is effectively guaranteed; when the outer connecting sleeve rotates freely, the inner connecting sleeve does not rotate, the circular arc guide groove of the inner ring of the outer connecting sleeve always ensures that the outer connecting sleeve stops rotating so that the guide steel ball is arranged in the outer connecting sleeve, and when the outer connecting sleeve is static, the inner connecting block and the outer connecting block are always in a staggered state in the axial direction; when the plug assembly is inserted into the socket shell, when the periphery of the insertion end of the socket shell is inserted into the inner ring of the locking sleeve, a circle of a plurality of inner locking clamping seats are fed into the annular locking gap along the space between every two outer locking clamping seats, meanwhile, the insertion steel ball is retracted into the inner hole of the push rod, the wedge block at the outer end of the push rod extends outwards, and the inner connecting sleeve is pushed to move outwards through the wedge surface, so that the outer connecting block and the inner connecting block are overlapped in the circumferential direction, at the moment, the outer connecting sleeve is driven to rotate synchronously through the inner connecting block and the outer connecting block, the outer connecting sleeve drives the locking sleeve to rotate 90 degrees through the inner connecting sleeve, the inner locking clamping seats at the inner end of the locking sleeve rotate 90 degrees in the annular locking gap and axially overlap the outer locking clamping seats, and therefore the axial limiting locking of the plug insertion is realized; when the locking sleeve rotates 90 degrees, the thread sleeve is driven to synchronously rotate 90 degrees, the thread sleeve drives the head shell to slightly move towards the inner end through the four-head thread, the jack and the pin component of the connector are further inserted and stabilized, the middle part of the inserting clamp spring of the head shell is inwards clamped correspondingly when the inserting of the plug component is started, when the locking sleeve rotates 90 degrees, the clamping clamp spring is fixed at the inner end of the head shell by the clamping key, the clamping spring is forced to be folded, two spring feet are separated from the clamping groove at one end and the middle part after rotating 90 degrees along with the locking sleeve and rotate to the positions of the clamping groove at the middle part and the other end to be clamped again, the clamping spring groove is 270 degrees, three clamping groove grooves are arranged at two ends and the middle point, therefore, the plug can rotate 90 degrees in the circumferential direction and then rotate in a limited position, and the plug component can realize circumferential and; when the plug is pulled out, the rotary outer connecting sleeve drives the locking sleeve to rotate reversely by 90 degrees through the inner connecting sleeve, spring feet of clamp springs in clamp spring grooves in the locking sleeve are folded and return to two clamp head grooves which are clamped in an initial non-insertion state along with reverse rotation, meanwhile, the inner locking clamp seat rotates reversely by 90 degrees in an annular locking gap and can axially disengage from the middle position of every two corresponding outer locking clamp seats, the insertion steel ball falls, the ejector rod retracts, the inner connecting sleeve resets under the action of an outer corrugated ring, the inner connecting block and the outer connecting block are staggered and overlapped axially, the outer connecting sleeve can bear any acting force, no self-locking hidden danger exists for the inner connecting sleeve and the inner locking structure of the plug assembly, and the integral structure is reliable.

Drawings

FIG. 1 is a schematic view of a plugging structure of the present invention;

FIG. 2 is a schematic perspective view of a plug assembly in half-section according to the present invention;

FIG. 3 is a schematic view of a socket housing according to the present invention;

FIG. 4 is a schematic view of a half-section of the rear half-section of the insertion of the present invention;

FIG. 5 is a schematic structural view of the clamp spring before locking;

FIG. 6 is a schematic structural view of the clamp spring of the present invention after being locked;

FIG. 7 is a schematic view of a half-section three-dimensional structure of the outer connecting sleeve of the present invention;

FIG. 8 is a schematic view of a half-section of an inner connection sleeve according to the present invention;

fig. 9 is a schematic perspective view of the locking sleeve of the present invention.

In the figure: the plug assembly 1, a head shell 11, a clamp spring key slot 1101, a thread bushing 12, a thread bushing outer key 1201, a clamp spring 13, a clamp key 1301, a spring foot 1302, an outer connecting sleeve 14, a circular arc guide slot 1401, an inner connecting block 1402, an inner connecting sleeve 15, a guide telescopic hole 1501, an outer connecting block 1502, an inner connecting sleeve inner key slot 1503, a locking sleeve 16, an inner locking clamp seat 1601, a push hole 1602, a locking sleeve inner key slot 1603, a locking sleeve outer key 1604, a clamp spring slot 1605, a clamp head slot 1606, a push rod 17, a wedge 1701, an inserting steel ball 18, a spring 19, a guide steel ball 110, an outer retainer ring 111, an outer corrugated spring 112, an anti-jump ring 113, an inner retainer ring 114, an inner corrugated spring 115, a sealing ring 116, a grounding spring 117, a socket shell 2, an outer locking clamp seat 201, an annular locking gap 202 and a seat plate 203.

Detailed Description

The following further description is made in conjunction with the accompanying drawings and examples.

FIGS. 1-9 show: a twist lock connector for preventing a plug from self-locking and being insertible again comprises a socket housing 2 and a plug assembly 1.

The plug assembly comprises a head shell 11, a threaded sleeve 12, a clamp spring 13, an outer connecting sleeve 14, an inner connecting sleeve 15, a locking sleeve 26, a push rod 17, an inserting steel ball 18, a spring 19, a guide steel ball 110, an outer retaining ring 111, an outer corrugated ring 112, an anti-jump ring 113, an inner retaining ring 114 and an inner corrugated spring 115, wherein the periphery of the head shell 11 is screwed with the threaded sleeve 12 through four threads, the periphery of the threaded sleeve 12 is inserted with the locking sleeve inner key groove 1603 at the outer end of the inner cavity of the locking sleeve 16 through an axial threaded sleeve outer key 1201, the inner cavity at the outer end of the locking sleeve 16 is inwards limited by the inner retaining ring 114 and sleeved on the anti-jump ring 113 and the inner corrugated ring 115 on the head shell, the outer end of the threaded sleeve is abutted to the inner corrugated ring 115, a clamp spring groove 1605 of 3/4 circles is arranged in the middle part of the inner ring of the locking sleeve 16, clamp spring grooves are arranged at the two end points and the middle point of the clamp spring groove, two adjacent clamp grooves 1101 are clamped with a spring foot 1302 arranged in the clamp spring groove 13 in the clamp spring groove, a clamp key 1301 arranged in the periphery of the clamp spring groove, the head shell 11, a plurality of inner locking clamping seats 1601 are uniformly distributed on the circumference of the inner port of the inner ring of the locking sleeve 16, a push hole 1602 penetrating the inner and outer of the locking sleeve is arranged on the inner locking clamping seat, the inner opening of the push hole contracts, an inserting steel ball 18 which is arranged in the push hole and can be partially separated from the inner opening of the push hole is tightly supported by a push rod 17 penetrating the locking sleeve from the outer opening of the push hole, the outer end of the push rod is provided with a wedge 1701 facing outwards along the axial line, the outer ring of the locking sleeve 16 is axially inserted into an inner connecting sleeve inner key slot 1503 of the inner connecting sleeve 15 through a locking sleeve outer key 1604, the wedge in the wedge-head abutting inner connecting sleeve 15 is in a state that the wedge moves outwards radially through the inner wedge surface to push the inner connecting sleeve outwards, the outer end of the inner connecting sleeve abuts against the rear end of the locking sleeve through an outer corrugated ring 112, the outer circumference of the inner connecting sleeve is sleeved with an outer connecting sleeve 14 in which the inner end of the inner limiting sleeve and the outer end of the outer limiting locking sleeve through an outer retaining ring 111, a plurality of arc guide grooves 1401 are axially arranged on the inner ring of the inner connecting sleeve 14, and a plurality of the inner ring 1401 are axially arranged on the inner ring, A plurality of inner connecting blocks 1402 are arranged at intervals in a circumferential matrix, each circular arc guide groove is positioned in the middle of the inner connecting block on two sides of the circular arc guide groove, a plurality of guide telescopic holes 1501 and a plurality of outer connecting blocks 1502 arranged at intervals in an axial direction and a circumferential matrix are formed in the circumference of the inner connecting sleeve 15, a guide steel ball 110 tightly abutted against any circular arc guide groove in the circumference of the outer connecting sleeve is supported outwards in each guide telescopic hole through a spring 19, the inner connecting block and the outer connecting block are axially staggered, when the inner connecting sleeve is pushed by a mandril to move outwards, the inner connecting block and the outer connecting block are inserted in the axial direction, and the inner connecting block and the outer connecting block are provided with overlapped parts in the circumferential direction and can be synchronously driven to rotate; a plurality of outer locking clamping seats 201 are uniformly distributed on the periphery of the inserting end of the socket shell 2, the inner locking clamping seats can be matched and penetrated between two adjacent outer locking clamping seats, and an annular locking gap 202 for accommodating the inner locking clamping seats is reserved between the outer locking clamping seats and the axial direction of a seat plate 203 of the socket shell.

In the above embodiment, a sealing ring abutting against the insertion port of the socket housing may be disposed in the middle of the inner ring of the head housing to improve the sealing performance.

In the above embodiment, the grounding spring can be disposed at the middle of the inner ring of the head housing and tightly abutted to the outer periphery of the insertion end of the socket housing, so as to improve the usability.

In the above embodiment, the outer ring of the outer connecting sleeve can be designed into an axial prism anti-skid structure or a net anti-skid structure, so as to facilitate the rotation driving.

Claims

1. The utility model provides a prevent that plug self-locking can't insert the spin lock connector who closes again, includes socket casing and plug subassembly, its characterized in that: the plug component comprises a head shell, a thread sleeve, clamp springs, an outer connecting sleeve, an inner connecting sleeve, a locking sleeve, a push rod, an inserting steel ball, a spring, a guide steel ball, an outer retainer ring, an outer corrugated ring, an anti-jumping ring, an inner retainer ring and an inner corrugated spring, wherein the periphery of the inner end of the head shell is screwed with the thread sleeve through four threads, the periphery of the thread sleeve is inserted into the outer end of the inner cavity of the locking sleeve through an axial key, the inner cavity of the outer end of the locking sleeve is inwards limited by the inner retainer ring and sleeved on the anti-jumping ring and the inner corrugated ring on the head shell and abutted against the outer end of the thread sleeve, the middle part of the inner ring of the locking sleeve is provided with a clamp spring groove of 3/4 circles, two end points and a middle point of the clamp spring groove are provided with clamp head grooves, two adjacent clamp head grooves are clamped with spring feet of the clamp springs arranged in the clamp spring groove, the middle part of the clamp spring is inwards provided with clamp keys which are correspondingly arranged in the key grooves of the four head threads at the inner end of the outer periphery of the head shell, a plurality of the inner ring of the locking sleeve are uniformly distributed on the circumference of the inner ring, the inner locking clamping seat is provided with a push hole penetrating through the inside and the outside of the locking sleeve, the inner opening of the push hole is contracted, an inserting steel ball which is partially separated from the inner opening of the push hole is arranged in the push hole, the inserting steel ball tightly abuts against a push rod connected with the locking sleeve through an outer opening of the push hole, the outer end of the push rod is provided with a wedge head facing outwards along the axis, the wedge head tightly abuts against the outer ring of the locking sleeve, the inner wedge surface of an inner connecting sleeve inserted through an axial key is in a state that the wedge head radially outwards moves, the inner connecting sleeve is pushed to outwards move through the inner wedge surface, the outer end of the inner connecting sleeve tightly abuts against the rear end of the locking sleeve through an outer corrugated ring, the outer circumference of the inner connecting sleeve is sleeved with the inner end of an inner limiting locking sleeve, the outer end of the outer connecting sleeve is limited by an outer retaining ring, the inner ring of the outer connecting sleeve is axially provided with a plurality of arc guide grooves and a plurality of inner connecting blocks arranged at intervals along the axial direction and the circumferential direction matrix, each arc guide groove is positioned at the middle position of the inner connecting blocks at both sides, the inner connecting block is provided with a plurality of guide holes and a plurality of the extension holes along the axial direction, The inner connecting block and the outer connecting block are axially staggered in a way that the inner connecting sleeve moves outwards under the push of the ejector rod to enable the inner connecting block and the outer connecting block to be inserted and combined axially, and the inner connecting block and the outer connecting block are provided with overlapped parts in the circumferential direction and can rotate synchronously; a plurality of outer locking clamping seats are uniformly distributed on the periphery of the inserting end of the socket shell, the inner locking clamping seat can be matched and penetrated between two adjacent outer locking clamping seats, and an annular locking gap for accommodating the inner locking clamping seat is reserved between the outer locking clamping seat and the seat plate of the socket shell in the axial direction.

2. A twist lock connector as claimed in claim 1, which prevents the plug from self-locking and becoming non-reinserting, and which is characterised in that: and a sealing ring tightly abutting against the socket shell insertion port part is arranged in the middle of the inner ring of the head shell.

3. A twist lock connector as claimed in claim 1, which prevents the plug from self-locking and becoming non-reinserting, and which is characterised in that: the middle part of the inner ring of the head shell is arranged on a grounding spring which is tightly propped against the periphery of the inserting end of the socket shell.

4. A twist lock connector as claimed in claim 1, which prevents the plug from self-locking and becoming non-reinserting, and which is characterised in that: the outer ring of the outer connecting sleeve is of an axial prism anti-skid or net-shaped anti-skid structure.