CN112086812B

CN112086812B - Repeatedly usable takes off lock sleeve of function by force and connector that drops

Info

Publication number: CN112086812B
Application number: CN202010941230.3A
Authority: CN
Inventors: 王飞; 汪静; 杨祎
Original assignee: Guizhou Space Appliance Co Ltd
Current assignee: Guizhou Space Appliance Co Ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2022-06-24
Anticipated expiration: 2040-09-09
Also published as: CN112086812A

Abstract

The invention provides a reusable locking sleeve with a forced release function and a release connector, wherein the locking sleeve comprises three layers of nested external members, an external sleeve member and a middle sleeve member are positioned through radial elastic pins, the middle of the middle sleeve member and an internal sleeve member are positioned through pins, the pins are arranged in the side walls of the middle sleeve member, the outer ends of the pins are blocked by the inner wall of the external sleeve member, and the inner ends of the pins are matched with grooves in the outer wall of the internal sleeve member; when the strong separating force applied to the outer sleeve and the inner sleeve reaches a threshold value, the elastic pin is compressed, the outer sleeve slides relative to the inner sleeve until the inner wall of the outer sleeve does not block the pin any more, the pin is ejected out by the groove of the inner sleeve, and the inner sleeve is separated from the inner sleeve. When the connector is unlocked and fails, the connector can be forcibly taken off, the locking sleeve inside the plug is unlocked and separated by forcibly pulling the plug and the socket, so that the plug and the socket are forcibly taken off, and after the connector is forcibly taken off, the pulled-out locking end can be installed again, so that the connector can be reused.

Description

Repeatedly usable takes off lock sleeve of function by force and connector that drops

Technical Field

The invention relates to a locking structure capable of being separated under the action of external force and a connector using the same.

Background

The drop connector is widely applied in the fields of spaceflight, aviation, weaponry and the like, and a central locking structure is mostly adopted for the convenience of use of the connector and the realization of the quick locking and separation of the connector. Due to the service life and the movement stress relationship, the strength of the locking sleeve in the falling connector is high, and when the locking mechanism fails and can not be unlocked, the connector is difficult to separate due to the conventional integrated locking sleeve structure, so that the system task fails, and the reliability of the connector is seriously influenced.

At present, in order to realize a strong disengagement function, a central locking connector adopts a mode of reducing the strength of a locking position to realize strong disengagement, such as a novel anti-disengagement connector disclosed in a Chinese patent with the application number of 2016107213065, a bus duct, a high-low frequency mixed small-sized self-disengagement connector disclosed in a Chinese patent with the application number of 2017101748437, a pull rope disengagement connector disclosed in a Chinese patent with the application number of 2016106100286, a high-low frequency mixed small-sized self-disengagement connector disclosed in a Chinese patent with the application number of 2017202839299, a pull rope disengagement connector disclosed in a Chinese patent with the application number of 2010205792606, an anti-disengagement connector disclosed in a Chinese patent with the application number of 2017203926538, and a strong-disengagement connector disclosed in a Chinese patent with the patent number of ZL 20181110385.3; however, this method has the following disadvantages: 1. the position of the forcible dislocation is not fixed; 2. the discreteness of the strong shedding force is large, and the size of the strong shedding force is not easy to control; 3. the forced-release function is disposable, and the recovery cannot be realized after misoperation; 4. the strength of the stripping force is guaranteed by design and processing, and the test cannot be carried out.

Disclosure of Invention

In order to solve the technical problems, the invention provides the drop connector with the reusable strong-release function, which adopts a self-locking split locking sleeve structure, can perform the strong-release function under the condition of unlocking failure or testing condition of the connector on the premise of ensuring reliable locking of the drop connector, and can unlock and separate the locking sleeve in the plug through pulling the plug and the socket by force to realize the strong release of the plug and the socket, and after the strong release of the connector is finished, one pulled-end of the locking sleeve can be installed again to realize the reuse of the connector.

The invention is realized by the following technical scheme:

a reusable locking sleeve with a forced release function comprises a three-layer nested sleeve, and is characterized in that an outer sleeve piece and a middle sleeve piece are positioned through radial elastic pins, the middle of the middle sleeve piece and the middle of an inner sleeve piece are positioned through pins, the pins are arranged in the side wall of the middle sleeve piece, the outer ends of the pins are blocked by the inner wall of the outer sleeve piece, and the inner ends of the pins are matched with grooves in the outer wall of the inner sleeve piece; when the strong releasing force applied to the outer sleeve piece and the inner sleeve piece reaches a threshold value, the elastic pin is compressed, the outer sleeve piece slides relative to the inner sleeve piece until the inner wall of the outer sleeve piece does not block the pin any more, the pin is ejected out of the groove of the inner sleeve piece, the inner sleeve piece and the inner sleeve piece are separated, and the outer sleeve piece and the inner sleeve piece are relatively fixed through the elastic force of the elastic pin.

The inner wall surface of the outer sleeve part is provided with three ring grooves, the elastic pin is matched with the first ring groove in a locking state, the elastic pin is separated from the first ring groove under the action of strong disengaging force and slides to be matched with the second ring groove, and at the moment, the pin of the middle sleeve part slides to the third ring groove.

The elastic pin consists of a spring and a steel ball, the spring is fixed in a radial hole at the upper end of the middle sleeve, the steel ball is installed at the movable end of the spring, and the pin in the side wall of the middle sleeve is spherical, cylindrical with an inclined plane at the inner side or a trapezoidal sliding block with an inclined plane at the inner side.

The number of the elastic pins and the number of the pins are respectively 3 and are distributed at an interval of 120 degrees.

The utility model provides a repeatedly usable takes off connector that drops of function by force, includes above-mentioned lock sleeve, and outer sleeve spare is the unlocking sleeve, and well external member is the locking cap, and the internal member is the check lock, and the check lock is fixed in the socket, installs spacing spring and spacing steel ball in the radial hole on the outer circumference of locking cap upper end, and spacing steel ball pushes up in the ring channel of unlocking sleeve inner wall under the effect of spacing spring, installs the check lock in the check lock and fixes through the locking steel ball.

The locking steel ball is arranged in a tapered hole in the wall surface of the locking cap, the diameter of the locking steel ball is larger than the thickness of the wall surface, and a part of the locking steel ball can be exposed inwards from the tapered hole and is matched with the annular groove in the locking rod.

The unlocking sleeve is a cylindrical sleeve, the front end of the unlocking sleeve is provided with a locking clamping groove used for being matched with the plug, and the lower half section of the unlocking sleeve is sequentially provided with a limiting step hole, a first annular groove, a second annular groove and a third annular groove.

In a locking state: the locking cap is barrel-shaped and is inversely sleeved on the locking rod, the upper end of the locking cap props against the limiting step hole, the limiting steel balls on the circumferential direction of the locking cap are matched with the first annular groove, and the tapered hole is positioned between the second annular groove and the third annular groove; the limiting step in the middle of the locking rod is matched with the lower end face of the unlocking sleeve.

The forced threshing process comprises the following steps: the plug is pulled to drive the unlocking sleeve to move, the limiting steel ball is compressed back to the radial hole, the unlocking sleeve moves relative to the locking cap and the locking rod, when the radial hole is aligned with the second annular groove, the limiting steel ball is ejected and matched with the second annular groove, the tapered hole is aligned with the third annular groove, the locking steel ball is extruded from the annular groove of the locking rod, and the locking cap is separated from the locking rod.

The depth of the third annular groove is smaller than the radius of the locking steel ball and larger than the difference between the diameter of the locking steel ball and the wall thickness of the side wall of the locking cap; when the plug is forcibly disengaged, the unlocking sleeve and the locking cap are taken out together.

The unlocking sleeve, the locking cap and the locking rod are all made of stainless steel materials, the unlocking sleeve is made of quenchable stainless steel, and the unlocking sleeve, the locking cap and the locking rod are subjected to surface passivation after being formed.

The invention has the beneficial effects that: the strong release position is fixed, the strong release separation stroke is fixed, the hardness of the locking end is high, and the locking reliability is high; the connector is forcibly released by pulling the unlocking sleeve to unlock the interior of the locking sleeve, so that the strong releasing force can adjust the elastic force of the spring according to requirements, thereby achieving the effect of changing the friction force when the unlocking sleeve is unlocked and changing the strong releasing force; the connector structure and parts are not damaged in the forced releasing process of the product, so that the connector can be recovered for reuse after being forced released, the repeated test application effect is achieved, and the unlocking force of the locking sleeve can be realized by changing the elastic force of the spring; the connector is forcibly released, namely the locking rod is unlocked and separated from the steel ball on the locking cap, wherein the locking cap is pulled out of the socket under the pulling of the plug after being separated from the unlocking sleeve, the locking rod is remained in the socket, and when the connector is used again, the locking cap and the unlocking sleeve are pressed into the socket to be locked with the locking rod, so that the connector can be used again; the locking sleeve is forced to be disengaged under the condition that the locking mechanism is invalid, and the locking mechanism is not influenced under other conditions.

Drawings

Fig. 1 is a schematic view of the structure of the drop connector.

Fig. 2 is a schematic view of the locking collar of fig. 1.

Fig. 3 is a schematic structural view of the unlocking sleeve in fig. 2.

Fig. 4 is a schematic view of the locking cap of fig. 2.

Fig. 5 is a schematic view of the structure of the locking bar of fig. 2.

In the figure: 1-socket, 2-plug, 11-nut, 12-fixing plate, 13-locking sleeve, 21-steel ball 1, 22-sheath, 23-support, 24-bushing, 25-sheath spring, 26-fixing thread sleeve, 27-pull rod, 28-locking spring, 131-unlocking sleeve, 1311-locking clamping groove, 1312-limit step hole, 1313-first annular groove, 1314-second annular groove, 1315-third annular groove, 132-locking cap, 1321-tapered hole, 1322-limit vertical hole, 1323-radial hole, 133-locking steel ball, 134-locking rod, 1341-annular groove, 1342-limit step, 135-limit steel ball and 136-limit spring.

Detailed Description

The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.

Example 1:

the embodiment is a reusable locking sleeve with a forced releasing function, and the locking sleeve comprises three layers of nested sleeves, wherein the outer sleeve and the middle sleeve are positioned through radial elastic pins, each elastic pin consists of a spring and a steel ball, the springs are fixed in radial holes at the upper end of the middle sleeve, the steel balls are installed at the movable ends of the springs, the middle of the middle sleeve and the middle of the inner sleeve are positioned through pins, the pins are installed in the side walls of the middle sleeve, and the pins in the side walls of the middle sleeve are spherical, cylindrical with inclined planes on the inner side, or trapezoidal sliding blocks with inclined planes on the inner side. The outer end of the pin is blocked by the inner wall of the outer sleeve part, and the inner end of the pin is matched with the groove on the outer wall of the inner sleeve part; when the strong releasing force applied to the outer sleeve piece and the inner sleeve piece reaches a threshold value, the elastic pin is compressed, the outer sleeve piece slides relative to the inner sleeve piece until the inner wall of the outer sleeve piece does not block the pin any more, the pin is ejected out of the groove of the inner sleeve piece, the inner sleeve piece and the inner sleeve piece are separated, and the outer sleeve piece and the inner sleeve piece are relatively fixed through the elastic force of the elastic pin.

The inner wall surface of the outer sleeve piece is provided with three ring grooves, the elastic pin is matched with the first ring groove in a locking state, the elastic pin is separated from the first ring groove under the action of strong separating force and slides to be matched with the second ring groove, the pin of the middle sleeve piece slides to the third ring groove, meanwhile, the pin slides to the third ring groove due to the fact that the pin receives pressure on the inner side, and the inner sleeve piece and the middle sleeve piece lose constraint separation. The number of the elastic pins and the number of the pins are respectively 3, and the elastic pins and the pins are respectively distributed on two circumferences at an interval of 120 degrees. The depth of the third ring groove is controlled in a small range to ensure that the pin does not fall out.

Example 2:

the reusable strong-release drop-out connector shown in fig. 1 to 5 comprises a socket 1 and a plug 2; a locking sleeve 13 is fixed in the socket 1, the plug 2 can be inserted into the socket 1, the locking sleeve 13 can be inserted into the plug 2, a bushing 24 is fixed in the plug 2, and the pull rod 27 is fixed in the bushing 24; the locking sleeve 13 comprises an unlocking sleeve 131, a locking cap 132, a locking steel ball 133, a locking rod 134, a limiting steel ball 135 and a limiting spring 136; one end of the unlocking sleeve 131 is provided with a locking clamping groove 1311 matched with the connector, and the other end is provided with a limiting step hole 1312. Generally, one end of the limiting step hole 1312 is communicated with the locking clamping groove 1311, so that the locking mechanism is not interfered when the connectors are butted. The rear end of the locking bar 134 is fixed to the fixing plate 12 of the socket 1 by a nut 11.

The inner wall of the unlocking sleeve 131 is provided with a first annular groove 1313, a second annular groove 1314 and a third annular groove 1315. The first annular groove 1313 is used for matching with the limiting steel ball 135 in a locking state, the second annular groove 1314 is used for carrying out secondary positioning on the limiting steel ball 135 in a forced disengaging state, and the third annular groove 1315 is arranged for providing a space for unlocking the locking steel ball 133 and ensuring that the locking steel ball 133 does not fall out. The connector forced release process is to move the steel ball 3 in the locking sleeve 13 from the first annular groove 1313 of the unlocking sleeve 131 to the second annular groove 1314 and pull the unlocking sleeve 131 out of the socket.

The locking cap 132 is provided with a limiting vertical hole 1322, the circumference of the side wall of the limiting vertical hole is provided with 3 conical holes 1321 which are uniformly distributed on the circumference, the cap end is provided with 3 radial holes 1323 which are uniformly distributed on the circumference, and the limiting steel ball 135 and the locking steel ball 133 are respectively assembled in the holes which are distributed on the circumference, thereby ensuring that the connector is uniformly stressed.

The upper end of the locking rod 134 is provided with an annular groove 1341, and the middle part of the locking rod is provided with a limiting step 1342.

The unlocking sleeve 131, the locking cap 132 and the locking rod 134 are all made of stainless steel materials, the unlocking sleeve is made of quenchable stainless steel, and the unlocking sleeve, the locking cap and the locking rod are subjected to surface passivation after being formed.

The sheath 22 of the plug 2 is sleeved in the support 23, a bushing 24 is arranged in the sheath 22, a sheath spring 25 is sleeved on the bushing 24, a pull rod 27 is fixed at the rear end of the connector, a locking spring 28 is sleeved on the pull rod 27, and a fixing threaded sleeve 26 is fixed at the rear end of the pull rod 27. The front end of the bush 24 is inserted into the unlocking sleeve 131 and fixed by the steel balls 21, and three steel balls 21 are uniformly distributed on a circle.

In a locking state: the locking cap 132 is sleeved on the locking rod 134, the upper end of the locking cap 132 props against the limiting step hole 1312, the limiting steel ball 135 on the circumferential direction of the locking cap 132 is matched with the first annular groove 1313, and the tapered hole 1321 is positioned between the second annular groove 1314 and the third annular groove 1315; the limiting step 1342 at the middle of the locking rod 134 is matched with the lower end surface of the unlocking sleeve 131.

The forced threshing process comprises the following steps: pulling the plug 2 to drive the unlocking sleeve 131 to move, compressing the limiting steel ball 135 back into the radial hole 1323, enabling the unlocking sleeve 131 to move relative to the locking cap 132 and the locking rod 134, enabling the limiting steel ball 135 to pop out and be matched with the second annular groove 1314 when the radial hole 1323 and the second annular groove 1314 are aligned, aligning the tapered hole 1321 and the third annular groove 1315 at the moment, extruding the locking steel ball 133 out of the annular groove 1341 of the locking rod 134, and separating the locking cap 132 from the locking rod 134.

Claims

1. A reusable locking sleeve with a forced release function comprises three layers of nested sleeves and is characterized in that a radial elastic pin is used for positioning between an outer sleeve piece and a middle sleeve piece, the middle of the middle sleeve piece and the middle of an inner sleeve piece are positioned through a pin, the pin is arranged in the side wall of the middle sleeve piece, the outer end of the pin is blocked by the inner wall of the outer sleeve piece, and the inner end of the pin is matched with a groove in the outer wall of the inner sleeve piece; when the strong disengaging force borne by the outer sleeve and the inner sleeve reaches a threshold value, the elastic pin is compressed, the outer sleeve slides relative to the inner sleeve until the inner wall of the outer sleeve does not block the pin any more, the pin is ejected out by the groove of the inner sleeve, the inner sleeve is separated from the middle sleeve, and the outer sleeve and the middle sleeve are relatively fixed by the elastic force of the elastic pin; the inner wall surface of the outer sleeve part is provided with three ring grooves, the elastic pin is matched with the first ring groove in a locking state, the elastic pin is separated from the first ring groove under the action of strong disengaging force and slides to be matched with the second ring groove, and at the moment, the pin of the middle sleeve part slides to the third ring groove.

2. The reusable locking sleeve with a forced-release function as claimed in claim 1, wherein: the elastic pin consists of a spring and a steel ball, the spring is fixed in a radial hole at the upper end of the middle sleeve, the steel ball is installed at the movable end of the spring, and the pin in the side wall of the middle sleeve is spherical, cylindrical with an inclined plane at the inner side or a trapezoidal sliding block with an inclined plane at the inner side.

3. The reusable locking sleeve with forced-release function as claimed in claim 2, wherein: the number of the elastic pins and the number of the pins are respectively 3 and are distributed at an interval of 120 degrees.

4. A reusable force-to-release connector comprising the locking sleeve of any one of claims 1-3, wherein: the outer sleeve part is unlocking sleeve (131), the middle sleeve part is locking cap (132), the inner sleeve part is locking rod (134), the locking rod (134) is fixed in socket (1), a limiting spring (136) and a limiting steel ball (135) are installed in a radial hole (1323) on the outer circumference of the upper end of the locking cap (132), the limiting steel ball (135) is pressed against an annular groove in the inner wall of the unlocking sleeve (131) under the action of the limiting spring (136), and the locking rod (134) is installed in the locking cap (132) and fixed through the locking steel ball (133).

5. The reusable strong release drop connector of claim 4, wherein: the locking steel ball (133) is arranged in a tapered hole (1321) in the wall surface of the locking cap (132), the diameter of the locking steel ball (133) is larger than the thickness of the wall surface, and a part of the locking steel ball (133) can be exposed inwards from the tapered hole (1321) and is matched with an annular groove (1341) in the locking rod (134).

6. The reusable strong release drop connector of claim 5, wherein: the unlocking sleeve (131) is a cylindrical sleeve, a locking clamping groove (1311) is formed in the front end of the unlocking sleeve and used for being matched with the plug (2), and a limiting step hole (1312), a first annular groove (1313), a second annular groove (1314) and a third annular groove (1315) are sequentially formed in the lower half section of the unlocking sleeve (131).

7. The reusable strong release drop connector of claim 6, wherein in the locked state: the locking cap (132) is reversely sleeved on the locking rod (134) in a barrel shape, the upper end of the locking cap (132) props against the limiting step hole (1312), a limiting steel ball (135) in the circumferential direction of the locking cap (132) is matched with the first annular groove (1313), and the tapered hole (1321) is positioned between the second annular groove (1314) and the third annular groove (1315); the limiting step (1342) of the locking rod (134) is matched with the lower end face of the unlocking sleeve (131).

8. The reusable strong release breakaway connector of claim 7 wherein the strong release process is: pulling the plug (2) to drive the unlocking sleeve (131) to move, compressing the limiting steel ball (135) back to the radial hole (1323), enabling the unlocking sleeve (131) to move relative to the locking cap (132) and the locking rod (134), enabling the limiting steel ball (135) to pop out and be matched with the second annular groove (1314) when the radial hole (1323) and the second annular groove (1314) are aligned, aligning the tapered hole (1321) and the third annular groove (1315) at the moment, extruding the locking steel ball (133) from the annular groove (1341) of the locking rod (134), and separating the locking cap (132) from the locking rod (134).

9. The reusable strong release drop connector of claim 8, wherein: the depth of the third annular groove (1315) is smaller than the radius of the locking steel ball (133) and larger than the difference between the diameter of the locking steel ball (133) and the wall thickness of the side wall of the locking cap (132); when the plug (2) is forcibly disengaged, the unlocking sleeve (131) and the locking cap (132) are taken out together.