阅读说明：本技术 一种插头自锁紧连接器 (Self-locking connector for plug ) 是由 张广宇 郭建设 江浪 于 2020-06-17 设计创作，主要内容包括：本发明公开了一种插头自锁紧连接器,包括插头、插座。插座为方盘壳体,方盘壳体与插头插合的圆筒部分外壁上设有曲槽,在圆筒部分内壁设有内花键；插头包括轴状花键壳体、筒状连接螺帽,连接螺帽套在花键壳体外部；花键壳体左端设有外键槽,花键壳体轴向中部还设有凸起的圆盘；连接螺帽的左端内部设有卡钉,中部为台阶孔,从台阶位置向连接螺帽右端开有键槽；花键壳体的圆盘位于连接螺帽的中部台阶孔的右侧,花键壳体圆盘右侧依次设有锁紧垫圈、波纹弹簧、卡簧；花键壳体圆盘右面上开有凹槽,锁紧垫圈左端面上设有与花键壳体圆盘面上的凹槽对应的凸起,锁紧垫圈的圆周面上还设有键。本发明能够实现插头内部结构自锁,利于高精设备的安全运行。(The invention discloses a plug self-locking connector which comprises a plug and a socket. The socket is a square disc shell, a curved groove is arranged on the outer wall of the cylindrical part where the square disc shell and the plug are inserted, and an internal spline is arranged on the inner wall of the cylindrical part; the plug comprises a shaft-shaped spline shell and a cylindrical connecting nut, and the connecting nut is sleeved outside the spline shell; the left end of the spline shell is provided with an external key groove, and the axial middle part of the spline shell is also provided with a raised disc; a staple bolt is arranged in the left end of the connecting nut, a step hole is arranged in the middle of the connecting nut, and a key groove is formed from the step position to the right end of the connecting nut; a disc of the spline shell is positioned on the right side of a middle step hole of the connecting nut, and a locking washer, a corrugated spring and a clamp spring are sequentially arranged on the right side of the disc of the spline shell; the right side of the spline shell disc is provided with a groove, the left end face of the locking washer is provided with a bulge corresponding to the groove on the spline shell disc surface, and the circumferential surface of the locking washer is also provided with a key. The invention can realize the self-locking of the internal structure of the plug and is beneficial to the safe operation of high-precision equipment.)

1. A plug self-locking connector, comprising: comprises a plug and a socket;

the socket is a square disc shell (1), a curved groove (1.1) is arranged on the outer wall of a cylindrical part where the square disc shell (1) and the plug are inserted, and a raised internal spline (1.2) is arranged on the inner wall of the cylindrical part;

the plug comprises a spline shell (2) and a connecting nut (3), wherein the spline shell (2) is in a hollow shaft shape, the connecting nut (3) is in a cylindrical shape, and the connecting nut (3) is sleeved outside the spline shell (2);

the left end of the spline shell (2) is provided with an external key groove which is matched with an internal spline (1.2) on the inner wall of a cylinder at the right end of the square disc shell (1) to form spline connection, and the middle part of the spline shell (2) along the axial direction is also provided with a raised disc; the left end of the connecting nut (3) is internally provided with the staple bolts (3.1) which are in one-to-one correspondence with the curved grooves (1.1), the middle part of the connecting nut is provided with a step hole, and three key grooves which are uniformly distributed along the circumference of the inner wall are arranged from the step position to the right end of the connecting nut (3);

a disc of the spline shell (2) is positioned on the right side of a step of a middle step hole of the connecting nut (3), and a locking washer (3.3), a corrugated spring (3.4) and a clamp spring (3.6) are sequentially arranged on the right side of the disc of the spline shell (2); a groove is formed in the right side face of the disc of the spline shell (2), a bulge in one-to-one correspondence with the groove in the right side face of the disc of the spline shell (2) is arranged on the left end face of the locking washer (3.3), keys in one-to-one correspondence with three key grooves evenly distributed in the inner wall of the connecting nut (3) along the circumference are further arranged on the circumferential face of the locking washer (3.3), and the locking washer (3.3) is clamped into the key grooves to be fixed.

2. A plug self-locking connector as claimed in claim 1, wherein: the terminal of the curved groove (1.1) is flat-bottomed.

3. A plug self-locking connector as claimed in claim 2, wherein: the number of the curved grooves (1.1) is three, and the curved grooves are of a three-curved-groove structure.

4. A plug self-locking connector as claimed in claim 1, wherein: still be equipped with three key retaining ring (3.5) between ripple spring (3.4) and jump ring (3.6), three keys of three key retaining ring (3.5) and the inside three keyway one-to-one of connecting nut (3), three key retaining ring (3.5) card is gone into in the keyway, fixes the inside of connecting nut (3).

5. A plug self-locking connector as claimed in claim 1, wherein: the outer key groove and the inner spline (1.2) are five keys.

6. A plug self-locking connector as claimed in claim 1, wherein: an annular groove is formed in the right end of the inner wall of the connecting nut (3), and correspondingly, the clamp spring (3.6) is an inner clamp spring for a hole and is fixed in the annular groove.

7. A plug self-locking connector as claimed in claim 1, wherein: an insulating gasket (3.2) is further arranged between the disc of the spline shell (2) and the step of the middle step hole of the connecting nut (3).

Technical Field

The invention belongs to the technical field of connectors, and particularly relates to a plug self-locking connector.

Background

Traditional bayonet type connector's structure is comparatively simple, be equipped with three curved grooves on the square plate casing of socket, however, three curved groove terminals are to returning and set up the recess, only be provided with elastic construction between coupling nut and the spline casing, coupling nut, relative slip can take place for the spline casing, the plug, the socket inserts the back of closing, it is rotatory with coupling nut, and impel along the axial, in-process, overcome ripple spring elasticity, the bail of coupling nut inner wall finally slides back in the recess at three curved groove terminals of socket, be about to coupling nut, socket locking.

However, the prior art also has disadvantages.

When the plug and the socket are normally plugged in place, the tail of the plug is connected with a wire, the dragging force is large, and the spline shell can be pulled to retreat backwards, so that contact devices inside the plug and the socket are separated to a certain degree, meanwhile, the sealing part between the contact parts of the plug and the socket, such as a sealing gasket, can also reduce the compression amount or even disappear, and once the separation occurs, the spline shell and a connecting nut can slide relatively, so that the twisting is very likely to occur, and the connecting wire at the rear part of the spline shell can be entangled. These drawbacks are detrimental to the safe operation of precision equipment.

If the plug and the socket need to be separated, the connecting nut needs to be pushed forwards, the staple bolt on the plug crosses the highest point of the groove at the terminal of the three-curved groove, then the connecting nut can be separated, in the process of reaching the highest point of the groove, the elastic force generated by the elastic structure in the connector needs to be overcome, and the separation of the connector is realized by overcoming the torque generated by the elastic force. It can be seen that, although the plug and the socket are separated, the connection nut needs to be pushed forward first to separate the plug and the socket continuously, which is a tedious operation.

Disclosure of Invention

In order to solve the technical problems in the background art, the invention provides a plug self-locking connector. Specific embodiments are given below:

a plug self-locking connector comprises a plug and a socket;

the socket is a square disc shell, a curved groove is arranged on the outer wall of the cylindrical part where the square disc shell and the plug are inserted, and a raised internal spline is arranged on the inner wall of the cylindrical part;

the plug comprises a spline shell and a connecting nut, the spline shell is in a hollow shaft shape, the connecting nut is in a cylindrical shape, and the connecting nut is sleeved outside the spline shell;

the left end of the spline shell is provided with an external key groove which is matched with an internal spline on the inner wall of a cylinder at the right end of the square disc shell to form spline connection, and the middle part of the spline shell along the axial direction is also provided with a raised disc;

the left end of the connecting nut is internally provided with clamp nails which are in one-to-one correspondence with the curved grooves, the middle part of the connecting nut is provided with a step hole, and three key grooves which are uniformly distributed along the circumference of the inner wall are arranged from the step position to the right end of the connecting nut;

the disc of the spline shell is positioned on the right side of the step of the middle step hole of the connecting nut, and the right side of the disc of the spline shell is sequentially provided with a locking washer, a corrugated spring and a clamp spring;

the right side face of the disc of the spline shell is provided with a groove, the left end face of the locking washer is provided with a bulge which is in one-to-one correspondence with the groove on the right side face of the disc of the spline shell, the circumferential face of the locking washer is also provided with keys which are in one-to-one correspondence with three key grooves which are uniformly distributed in the connecting nut along the circumference of the inner wall, and the locking washer is clamped into the key grooves for fixation.

Further, the terminal end of the curved groove is flat-bottomed.

Furthermore, the number of the curved grooves is three, and the curved grooves are of a three-curved-groove structure.

Furthermore, a three-key check ring is further arranged between the corrugated spring and the clamp spring, three keys of the three-key check ring correspond to three key grooves in the connecting nut one by one, and the three-key check ring is clamped in the key grooves and fixed in the connecting nut.

Furthermore, the outer key groove and the inner spline are five keys.

Furthermore, an annular groove is formed in the right end of the inner wall of the connecting nut, and correspondingly, the clamp spring is an inner clamp spring for a hole and is fixed in the annular groove.

Furthermore, an insulating gasket is arranged between the disc of the spline shell and the step of the middle step hole of the connecting nut.

When the plug and the socket are connected in an inserting and combining mode, an outer key groove in the spline shell is matched with an inner spline in the square disc shell, the staple bolt is aligned to the three-curved groove, then pressure is applied in the axial direction, the connecting nut is rotated simultaneously, finally the staple bolt is screwed into the flat groove at the end of the three-curved groove and matched in place, in the process, due to the fact that the three-key locking washer and the connecting nut are fixed in the axial relative position, the locking washer can rotate along with the rotation of the connecting nut, in the rotating process of the locking washer, the protrusion of the locking washer can continuously enter and exit from the groove of the middle disc of the spline shell, when the locking washer slides out of the groove, displacement towards the right side can be generated, at the moment, the elastic force of the corrugated spring needs to be overcome, and finally, when the connection is in place, the protrusion of the locking washer falls.

When the rear end of the spline shell is connected with a line and is subjected to a large dragging force, once the spline shell rotates, the axial pressure caused by the corrugated spring when the locking washer slides out of the groove is overcome, and therefore the connecting nut and the spline shell are limited in relative rotation by the aid of the elastic force of the corrugated spring, and the connecting line is prevented from being entangled and twisted.

Compared with the prior art, the invention has the beneficial effects that:

1. the connecting nut and the spline shell can be axially limited through the insulating gasket and the snap spring at the tail part, so that the connecting nut and the spline shell cannot axially float;

2. through the matching of the corrugated spring, the lock washer and the spline shell, when the spline shell and the connecting nut tend to rotate relatively, the elasticity of the corrugated spring needs to be overcome, so that the connecting nut and the spline shell are limited in relative rotation;

3. the plug is self-locked by the axial limiting and the rotary limiting of the connecting nut and the spline shell, and meanwhile, after the plug and the socket are inserted in place, the tail part drags the cable to prevent the cable from returning, so that the connector can play a role stably;

4. the connecting nut and the square disc shell can be separated in a rotating mode without pushing the connecting nut forwards, and operation is simple.

Drawings

FIG. 1: a plug self-locking connector schematic.

FIG. 2: a schematic diagram of the components of a plug self-locking connector.

FIG. 3: a schematic view of a square disc housing.

FIG. 4: spline housing schematic.

FIG. 5: a schematic view of a coupling nut.

FIG. 6: the connecting nut is shown schematically in a top view.

FIG. 7: 3 A 3- 3 A 3 in 3 FIG. 3 5 3 is 3 a 3 schematic 3 sectional 3 view 3. 3

FIG. 8: a lock washer is schematically shown.

FIG. 9: schematic representation of triple bond retainer ring.

FIG. 10: schematic view of the assembled coupling nut.

FIG. 11: FIG. 9 is a schematic sectional view B-B.

In the figure: 1. the square disc type clamping spring comprises a square disc shell, 1.1-curved grooves, 1.2-internal splines, 2-spline shells, 3-connecting screw caps, 3.1-clamping nails, 3.2-insulating gaskets, 3.3-locking washers, 3.4-corrugated springs, 3.5-triple-key retainer rings and 3.6-clamping springs.

Detailed Description

The present invention is described herein with reference to the accompanying drawings, and it is to be understood that the present invention is not limited to the illustrations, but is intended to cover various changes and modifications within the spirit and scope of the invention.