CN210272845U

CN210272845U - Plug connector and connector assembly

Info

Publication number: CN210272845U
Application number: CN201920859355.4U
Authority: CN
Inventors: 杜俊伟; 朱彧; 牛志军; 韩旭; 吴斌; 李晓涛; 安景; 张黎明; 刘琢
Original assignee: China Nuclear Power Engineering Co Ltd; China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Nuclear Power Engineering Co Ltd; China Aviation Optical Electrical Technology Co Ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-04-07
Anticipated expiration: 2029-06-06

Abstract

The utility model relates to a plug connector, the plug shell periphery is rotated the cover and is equipped with coupling nut, is equipped with annular bulge on the coupling nut inner peripheral surface, be equipped with the shaft shoulder on the plug shell outer peripheral surface, annular bulge is located between plug shell grafting end and the shaft shoulder, and presses between this annular bulge and the shaft shoulder and is equipped with the ripple spring; and the peripheral surface of the plug shell is also provided with a limiting step surface for limiting the relative movement distance between the annular bulge and the shaft shoulder and stopping the annular bulge from facing the side end surface of the shaft shoulder. The utility model discloses plug housing position can not retreat, can not cause the relative position between plug and the socket to change because of the plug receives the pulling force, and it is spacing to be provided with the axial between coupling nut and the plug housing simultaneously, when avoiding the plug to receive great thrust, and the plug removes to the socket, causes contact pin transition antedisplacement and jack hole bottom to produce the top dead and damage the contact pin.

Description

Plug connector and connector assembly

Technical Field

The utility model relates to an electric connector technical field, concretely relates to plug connector and connector assembly.

Background

Connector assemblies are important bridges for transmitting electrical current or signals between electronic devices. The connector assembly is generally composed of a plug and a socket, and the transmission of current or signals is realized through the mutual insertion of the plug and the socket, so the reliability of the plug and the socket connection is a non-negligible performance index in the connector connection.

Bayonet and threaded connections are common connections of conventional connector assemblies. The common connector assembly structure is: a connecting nut capable of rotating coaxially around the shell is arranged on the plug shell and used for axial positioning in the connecting and plugging process. The socket connected with the plug and the socket is provided with a curved groove or a thread, and when the plug and the socket are connected, the plug connecting nut rotates along the curved groove or the thread track on the socket shell, so that the plug and the socket are plugged. However, the connecting nut on the plug only has an axial fixing function, and the plug shell and the connecting nut are often rotated after being inserted and put in place, and particularly in some vibration occasions, the connecting nut may be retracted after being inserted and put in place to be loosened, so that the connection of the plug and the socket loses reliability.

In a general bayonet structure, a corrugated spring is arranged between a connecting nut and a plug shell, and the corrugated spring adopts a folded or opened corrugated spring with a large elastic coefficient. When the socket is connected with the socket, the connecting nut compresses the corrugated spring, the corrugated spring compresses the plug shell, and the elastic support provided by the corrugations ensures the position of the plug shell after the head seat is plugged. Under the condition of the longer heavier cable of plug connection, plug housing may receive great backward pulling force under operating mode such as vibration, because plug housing relies on ripple spring elastic support this moment, backward pulling force can make ripple spring continue tightly, and then causes the plug to retreat, and the effective contact length of contact between plug and the socket shortens, reduces the reliability of contact and causes the connection loss even.

Disclosure of Invention

The utility model aims at providing a plug connector, simultaneously the utility model discloses a purpose still is providing a connector assembly who contains this plug connector, makes it can realize the suggestion of targetting in place among the complex environment and solve the interface pine problem of taking off in the vibrations environment, can be used to locking in the vibrations environment, has guaranteed plug and socket's connection reliability.

The purpose of the utility model and the technical problem thereof are realized by adopting the following technical scheme. According to the plug connector provided by the utility model, the outer periphery of the plug shell 4 is rotatably sleeved with the connecting nut 1, the inner periphery of the connecting nut 1 is provided with the annular bulge 15, the outer periphery of the plug shell 4 is provided with the shaft shoulder 11, the annular bulge 15 is positioned between the plugging end of the plug shell 4 and the shaft shoulder 11, and the corrugated spring 2 is pressed between the annular bulge and the shaft shoulder 11; the outer peripheral surface of the plug housing 4 is further provided with a limiting step surface 12 for stopping the end surface of the annular protrusion 15 facing the shaft shoulder 11 so as to limit the relative movement distance between the annular protrusion and the shaft shoulder.

The purpose of the utility model and the technical problem thereof can be further realized by adopting the following technical measures.

In the plug connector, a locking member 3 which is circumferentially locked with the connecting nut 1 is further arranged between the corrugated spring 2 and the shaft shoulder 11; the end surface of the locking piece 3 facing the shaft shoulder 11 is provided with a rotation stopping groove 8; the end face, facing the locking piece 3, of the plug shell shaft shoulder 11 is provided with a rotation stopping protrusion 9 which can slide into or slide out of the rotation stopping groove 8 when the plug shell and the connecting nut rotate relatively.

In the aforementioned plug connector, the rotation stopping groove 8 includes a restraining portion for restraining the rotation stopping protrusion from sliding out and a guiding portion for guiding the rotation stopping protrusion to slide in.

In an embodiment of the plug connector, the constraining portion is an arc-shaped groove, the guiding portion is an inclined surface located at one end of the arc-shaped groove, and the rotation stopping protrusion is an arc-shaped protrusion.

In the plug connector, the locking member 3 is circumferentially locked by the rotation preventing key 7 on the outer circumferential surface thereof and the key groove 10 on the inner circumferential surface of the coupling nut.

In the plug connector, the spacing between the limiting step surface 12 and the annular protrusion is not more than 0.5 mm.

The purpose of the utility model and solve the technical problem can also be realized by adopting the following technical scheme. According to the utility model provides a connector assembly, including plug connector and socket connector, wherein plug connector constitute by above-mentioned plug connector.

Compared with the prior art, the utility model obvious advantage and beneficial effect have. Borrow by above-mentioned technical scheme, the utility model discloses can reach considerable technical advancement and practicality to have the wide use value in the industry, it has following advantage at least:

the utility model discloses the connector subassembly has the headstock and inserts and close the back that targets in place, and plug housing position can not retreat, can not cause the relative position between plug and the socket to change because of the plug receives the pulling force, and effective contact length shortens's characteristics are provided with the axial spacing between coupling nut and the plug housing simultaneously, and when avoiding the plug to receive great thrust, the plug removes to the socket, causes the contact pin to excessively move forward and produces the top dead and damage the contact pin at the bottom of the jack hole. The utility model discloses the retaining member has locking taking off, locking suggestion and unblock suggestion, unblock moment big and the little characteristics of locking moment, can realize the suggestion of targetting in place among the complex environment and solve the interface pine in the vibrations environment and take off the problem.

Drawings

Fig. 1 is a schematic diagram of a plug connector of the present invention;

fig. 2 is a schematic structural view of a plug connector locking member of the present invention;

FIG. 3 is a cross-sectional view of the retaining member;

fig. 4 is a schematic structural view of the plug connector connection nut of the present invention;

fig. 5 is a schematic structural diagram of the plug connector housing of the present invention;

fig. 6 is a schematic structural view of the plug connector and the receptacle connector of the present invention when they are plugged.

[ description of main element symbols ]

1: connecting nut

2: corrugated spring

3: locking piece

4: plug shell

5: clamp spring

7: anti-rotation key

8; rotation stopping groove

9: rotation stopping protrusion

10: key groove

11: shaft shoulder

12: spacing step surface

13: staple bolt

14: socket shell

15: annular protrusion

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the plug connector according to the present invention with reference to the accompanying drawings and preferred embodiments will be made as follows.

Referring to fig. 1-5, which are schematic structural views of the plug connector of the present invention, a connecting nut 1 is rotatably sleeved on the periphery of a plug housing 4 of the plug connector. An annular bulge 15 is arranged on the inner peripheral surface of the connecting nut 1, a shaft shoulder 11 is arranged on the outer peripheral surface of the plug shell 4, the annular bulge 15 is positioned between the plug end of the plug shell 4 and the shaft shoulder 11, and a corrugated spring 2 is arranged between the annular bulge and the shaft shoulder 11 in a pressing mode. The outer peripheral surface of the plug shell 4 is further provided with a limiting step surface 12 for stopping the end surface of the annular protrusion 15 facing the shoulder 11 so as to prevent the corrugated spring from losing effectiveness due to the fact that the corrugated spring is flattened by too large displacement when the plug shell 4 is driven to move towards the annular protrusion when thrust is applied to the plug shell 4, and the distance between the limiting step surface 12 and the annular protrusion 15 is not more than 0.5mm, so that the axial displacement of the plug shell when thrust is applied to the plug shell is not more than 0.5mm, and further, the situation that the plug moves excessively towards the socket to cause the excessive forward movement of the contact pin and the bottom of the jack hole to generate dead jacking to damage the contact pin is avoided. And a snap spring 5 is arranged on the inner peripheral surface of one side of the connecting nut 1, which is far away from the inserting end, and is in stop fit with the annular groove at the shaft shoulder 11 through the snap spring 5.

A locking piece 3 is further arranged between the corrugated spring 2 and the shaft shoulder 11, and the locking piece 3 and the connecting nut 1 are prevented from rotating in the circumferential direction, namely the locking piece 3 rotates along with the rotation of the connecting nut 1. At least two anti-rotation keys 7 are arranged on the outer peripheral surface of the locking piece 3, and the anti-rotation keys 7 are matched with key grooves 10 on the inner peripheral surface of the connecting nut to realize circumferential anti-rotation.

Be equipped with 2 at least splines recess 8 on retaining member 3 towards the terminal surface of shaft shoulder 11 in the embodiment of the utility model provides an, should spline recess 8 including restricted portion and guide portion in the embodiment of the utility model provides an, restricted portion is the arc wall, the guide portion is the inclined plane of this arc wall one end, but is not limited to here.

Be equipped with two at least slips-in or roll-off on the terminal surface of shaft shoulder 11 orientation retaining member 3 the protruding 9 of splining recess 8, when coupling nut 1's staple is connected to target in place, when the staple on coupling nut 1 slides the socket connector curved groove tank bottom of adaptation promptly, the protruding 9 of splining just in time is located the splining recess 8, realizes that coupling nut 1 and plug housing's circumference splining. In the embodiment of the present invention, the rotation stopping protrusion 9 is a circular arc protrusion matched with the rotation stopping groove.

In the embodiment of the present invention, there are 4 rotation stopping grooves and are uniformly distributed along the circumference of the locking member 3, and the rotation stopping protrusions are two protrusions uniformly distributed along the circumference of the shaft shoulder, but not limited thereto.

The utility model discloses plug connector sets up two keys of retaining member and matches with connection nut's keyway for the retaining member can rotate in step under connection nut's drive, and the circular arc arch on the convex recess of retaining member and the plug housing shaft shoulder cooperatees, realizes retaining member and plug housing's the function of splining, and then guarantees plug and socket's reliable connection.

The utility model discloses a when plug connector is connected with the socket, the bail on the coupling nut slides from initial position to the curved groove tank bottom on the socket connector of adaptation, in this process, coupling nut drives retaining member and moves with it, protruding on the plug housing is deviate from and the extrusion is installed in the ripple spring between coupling nut and retaining member from the recess of retaining member, finally when the bail reachs curved groove tank bottom, the only rotation recess on the retaining member is accurate lock to casing only rotation protruding once more, connection nut and plug housing have been guaranteed and have only rotated in the relative of circumference direction, and meanwhile, the ripple spring of compression state can provide coupling nut, the axial holding power of retaining member and plug housing, for compress tightly coupling nut, retaining member and plug housing. If the connection is to be unlocked, the retaining force must be overcome, and the locking projection of the plug housing is disengaged from the locking groove of the locking element, so that the anti-loosening function of the connection nut on the plug housing can be realized; simultaneously, the groove that splines on the retaining member is the circular arc recess, but the recess both ends height that is used for the location on the retaining member is different, and one end is complete circular arc, and the other end adds one section slash for the circular arc to when relatively inserting, need bigger moment of torsion when causing the plug and socket unblock, further strengthened the reliability of connecting, also strengthened the ease of operation simultaneously. In addition, when the socket is screwed in place and locked and unscrewed and unlocked, the rotation stopping protruding structures on the socket shell fall into the rotation stopping grooves in the locking pieces, and clear hand feeling and sound prompt can be generated.

The utility model discloses after connecting nut is arranged in to the ripple spring of butt joint, before the plug casing, connecting nut passes through jump ring and the laminating of plug casing rigidity, when the plug received great backward pulling force, because before the ripple spring of butt joint arranges the plug casing in, after the connecting nut, so can not continue the extrusion to the ripple spring of butt joint, also can not produce relative displacement between plug casing and the connecting nut, can effectually guarantee that the headstock inserts the back of closing, effective contact length can not shorten when the plug is drawn the power. Meanwhile, the plug shell is provided with the limiting step face, after the plug and the socket are plugged, a smaller controllable gap is formed between the limiting step face and the annular protrusion in the connecting nut, the plug can be guaranteed to be capable of limiting the forward displacement of the plug when receiving forward thrust, and therefore the situation that the plug excessively moves towards the socket, the contact pin is prevented from being excessively moved forwards and the bottom of the jack hole is jacked to damage the contact pin is avoided.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed with the preferred embodiment, it is not limited to the present invention, and any skilled person in the art can make modifications or changes equivalent to the equivalent embodiment of the above embodiments without departing from the scope of the present invention, but all the modifications, changes and modifications of the above embodiments by the technical spirit of the present invention are within the scope of the present invention.

Claims

1. The utility model provides a plug connector, this plug housing (4) periphery is rotated the cover and is equipped with coupling nut (1), is equipped with annular arch (15) on coupling nut (1) inner periphery, be equipped with shaft shoulder (11), its characterized in that on plug housing (4) outer periphery:

the annular bulge (15) is positioned between the plugging end of the plug shell (4) and the shaft shoulder (11), and a corrugated spring (2) is pressed between the annular bulge and the shaft shoulder (11);

the plug comprises a plug shell (4), and is characterized in that a limiting step surface (12) used for stopping the end surface of the annular bulge (15) facing the side end face of the shaft shoulder (11) so as to limit the relative movement distance between the annular bulge and the shaft shoulder is further arranged on the outer peripheral surface of the plug shell (4).

2. The plug connector of claim 1, wherein: wherein a locking piece (3) which is circumferentially locked with the connecting nut (1) is also arranged between the corrugated spring (2) and the shaft shoulder (11); the end face, facing the shaft shoulder (11), of the locking piece (3) is provided with a rotation stopping groove (8); the plug shell shaft shoulder (11) is provided with a rotation stopping protrusion (9) facing the locking piece (3) and capable of sliding into or sliding out of the rotation stopping groove (8) when the plug shell and the connecting nut rotate relatively.

3. The plug connector of claim 2, wherein: the rotation stopping groove (8) comprises a restraining part for restraining the rotation stopping protrusion from sliding out and a guiding part for guiding the rotation stopping protrusion to slide in.

4. The plug connector of claim 3, wherein: wherein the restriction part is an arc-shaped groove, the guide part is an inclined plane positioned at one end of the arc-shaped groove, and the rotation stopping protrusion is an arc-shaped protrusion.

5. The plug connector of claim 2, wherein: the locking piece (3) realizes circumferential rotation prevention through the matching of a rotation prevention key (7) on the outer circumferential surface of the locking piece and a key groove (10) on the inner circumferential surface of the connecting nut.

6. The plug connector of any one of claims 1-5, wherein: wherein the spacing between the limiting step surface (12) and the annular bulge is not more than 0.5 mm.

7. A connector assembly comprising a plug connector and a receptacle connector, characterized in that: wherein the plug connector is the plug connector of any one of claims 1-6.