JP2003031306A - Electric connector coupling mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector structure realizing connector fitting of mutually fixing a plug connector and a receptacle connector in a coupled state so there is no circumferential or axial movement by axial movement and not by rotation. SOLUTION: In the coupling mechanism of the plug connector 30 to the receptacle connector 20, the plug connector 30 is fixed to the receptacle connector 20 just by pushing it, and they can be separated by drawing a coupling nut 34. In a fixed state, the connectors can not mutually move even when large impact or vibration is applied. This is achieved by surface contact of large force between the plug connector 30 and the receptacle connector 20. By fixing the coupled connectors, electric contacts are protected from excessive fatigue caused when there is movement between the plug connector 30 and the receptacle connector 20, and problems are suppressed such as no electrical continuity, abnormal rise of temperature, or a burnout due to overheating.

Description

Detailed Description of the Invention

(Related Application) This application is entitled "Push-Pull Quick Connect Connector System" March 14, 2001.
The priority application is claimed from US provisional application No. 60 / 275,468 of Japanese application, and all the disclosures therein are incorporated herein by reference.

FIELD OF THE INVENTION The present invention relates generally to the field of electrical connectors, and more particularly to electrical connector mating mechanisms. In particular, the present invention relates to a push-pull quick connector system that suppresses axial movement of the plug connector and the receptacle connector.

BACKGROUND OF THE INVENTION Electrical connector systems having a plug connector and a receptacle connector are known. The mating of the plug and receptacle connector is usually accomplished by rotating a mating nut, which may be either a screw or bayonet type. The screwing or bayonet operation rotates the coupling nut that secures the plug and receptacle connector and pushes it forward to create a strong bond between the plug connector and the receptacle connector. On the downside, this operation requires extra time to mate each connector in multiple connector arrangements when repair is required. Further, there is a need for a plug connector and a receptacle connector in which the movement of the contacts is suppressed.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an electrical connector in which a plug and a receptacle connector are fixed so as to be circumferentially and / or axially immovable relative to each other when mated. Is.

Another object of the present invention is to provide an electrical connector in which the plug and the receptacle connector can be fixed to each other by axial movement.

These and other objects of the invention are accomplished by an electrical connector having a receptacle connector having a receptacle assembly having a plurality of moveable balls on its own wall. The plug assembly is
It has a plug shell and has a shoulder and an annular groove. The coupling nut has a shoulder and a thrust surface. The spring biases the coupling nut shoulder towards the plug shell shoulder in relation to the coupling nut. The receptacle assembly and the plug assembly have an unbonded state and a fixedly bonded state. The receptacle assembly and the plug assembly are different from each other when the receptacle assembly and the plug assembly are pressed together and a plurality of balls are pushed inward in the annular groove in the circumferential direction and are held by the bias of the spring and the thrust surface. And the plug assembly is in a fixed connection.

The above and other objects of the invention are achieved by an electrical connector having a receptacle assembly. The receptacle assembly has a receptacle connector having a plurality of protrusions and a plurality of contacts projecting circumferentially outward therefrom. The plug assembly has a plurality of contacts and a plug shell with one of a keyway and a key. The coupling nut has a plurality of protrusions protruding inward in the circumferential direction and has one of a key groove and a key. The spring biases the coupling nut in one direction. The rotating sleeve is retained within the plug shell and has a coupling nut tilt groove and a receptacle tilt groove. The receptacle assembly and the plug assembly have a non-bonded state and a fixedly coupled state. Receptacle assembly and plug assembly Receptacle assembly consists of receptacle assembly and plug assembly receptacle assembly pressed together, the protrusion of receptacle assembly and coupling nut fits on the rotating sleeve, which causes the rotating sleeve to rotate, which causes the receptacle assembly and plug Assemble the assembly receptacle assembly.

The foregoing and other objects of the invention are achieved by an electrical connector having a receptacle assembly. The receptacle assembly has a receptacle connector and has a plurality of protrusions and a plurality of contacts that extend outward in the circumferential direction from the receptacle connector. The plug assembly has a plurality of contacts and a plug shell having one of a keyway and a key. The coupling nut is
It has a plurality of protrusions extending inward in the circumferential direction and has one of a key groove and a key to prevent the coupling nut from rotating with respect to the plug shell. The spring is biased in one direction such that the coupling nut is biased in the opposite direction to the coupling nut projection. The rotating sleeve is retained within the plug shell and has a coupling nut tilt groove and a receptacle tilt groove. The receptacle assembly and the plug assembly have an unbonded state and a fixedly bonded state. When the receptacle assembly protrusion is aligned with the receptacle tilt groove in the uncoupled state and the receptacle assembly and the plug assembly are pushed together, the rotating sleeve rotates,
This aligns the coupling nut projection and the coupling nut tilt groove. If you push the receptacle assembly and plug assembly further, the rotating sleeve rotates further,
The sleeve is moved axially into a fixed connection.

The present invention provides a structure for connecting a plug connector to a receptacle connector, in which the plug connector is fixed to the receptacle connector only by pushing and the connecting nut can be pulled and released. The action of pushing and fixing and pulling and releasing is not unique in the connector industry,
The invention is unique in that when the plug and the receptacle connector are mated, their circumferential or axial movement relative to each other is fixed when mated. The fixedly coupled connectors do not move relative to each other even when subjected to high shock and vibration. This is accomplished by making a large force surface contact between the plug connector and the receptacle connector. By fixing the connected connectors, the electrical contacts are protected from excessive fatigue that occurs when there is movement between the plug connector and the receptacle connector, electrical continuity is lost, abnormal temperature rises, and burning due to overheating There is an advantage to hold down.

The present invention saves time when connecting and disconnecting connectors, and only requires a quick push, lock, pull and release action. The force of the spring is half the force that secures the connector, and this locking scheme is unique in that it pulls both the plug and the receptacle connector close to the locking position. In addition, this fixing method applies a high pushing force in the axial direction of the coupling to eliminate the movement between the plug and the receptacle connector. The second embodiment accomplishes this by utilizing a beveled angle to create mechanical advantage.

The present invention is particularly suitable for use in low currents and optical fibers.

Still other objects and advantages of the present invention will be understood from the following detailed description of the art, in which the preferred embodiments of the invention are shown and described by illustrating the best mode for carrying out the invention. It will be readily apparent to those with skill. As will be appreciated, the invention is capable of other different embodiments, and its several details are capable of modifications in various obvious respects, all without departing from the invention. Therefore, the drawings and description are for illustration purposes only and are not limiting.

BEST MODE FOR CARRYING OUT THE INVENTION The electrical connector according to the first embodiment of the present invention is shown in FIG.
It is indicated by 0. For convenience and purposes of explanation, the electrical contacts used in the first embodiment of the electrical connector have been omitted for clarity. Further, the present invention is illustrated in the horizontal direction, and terms such as “left” and “right” should be interpreted in a relative sense, and it is understood that the present invention can be used in any direction. Should. The electrical connector 10 is a receptacle 2
0 and plug 30. The receptacle 20 has
There is a receptacle body 22, a plurality of balls 24 and an O-ring 26. Generally, four balls 24 are used in the present invention, but it will be understood that any number of balls may be used. The balls are hit with a pointed object and held in the through holes in the receptacle body 22. At this time, the material in contact with the balls is partially deformed, so that each ball is freely moved in the direction perpendicular to the longitudinal axis of the receptacle body 22. Make it move. Besides hitting with a sharp object, the ball can be held by other methods. That is, the ball 24 can be freely moved and moved in and out as described below. The balls 24 are arranged at equal intervals in the circumferential direction.

As shown in FIG. 1, the balls 24 project inward and outward in the circumferential direction from the inner and outer surfaces of the receptacle body 22, respectively. As shown in FIG. 1A, the receptacle body 22 also has circumferentially aligned slots or keyways 28 between equally spaced balls 24 to form ribs or keys 52 in the plug shell 32. Is fitted to the receptacle 20.
And the plug 30 are circumferentially aligned with each other. The receptacle body 22 has a flange 29.

The plug assembly 30 includes a plug shell 32, a coupling nut 34, a spring 36, a spring retainer 38 and a retaining ring 40. The plug shell 32 has an annular groove 50 facing outward in the circumferential direction for receiving and retaining balls as described below. The plug shell 32 is
It has elongated ribs or keys 52 on its outer surface that fit into the alignment slots or keyways 28 for circumferential alignment between the plug 30 and the receptacle 20. The plug shell 32 has an annular outwardly projecting shoulder 54 in the central portion and an annular groove 56 at the rear end for receiving the retaining ring 40.

The coupling nut 34 is generally cylindrical in shape and has an inclined surface 60 which serves as a coupling nut fixing surface. The spring 36 is located between the shoulder 55 of the coupling nut 34 and the spring retainer 38, and the spring retainer 38 is held by the retaining ring 40.

As shown in FIGS. 1-4, the coupling nut 34
Is pushed towards the receptacle 20 by the spring 36. The spring force may be approximately 20-30 pounds. To connect the receptacle 20 and the plug connector 30,
The direction of movement of the plug connector 30 depends on the receptacle 20.
Is the axial direction toward. When the operation of pushing or fitting the plug connector 30 into the receptacle 20 is performed, the coupling nut 34 comes into contact with the ball 24 of the receptacle 20 at a certain point. At this point, the spring 36 is pushed rearward by the coupling nut 34, as shown in FIG. The balls 24 of the receptacle 20 travel along the outer diameter surface of the plug shell 32,
Approaching the groove 50, which is the thrust surface 58. As the plug connector 30 moves further towards the receptacle 20, the balls 24 of the receptacle 20 begin to fall into this groove 50 due to the force angle exerted on the balls 24 by the thrust surface 58. The connecting nut 34 is inclined in this direction, and the thrust surface 60 brings the ball 24 inward in the circumferential direction. The thrust surface 60 of the coupling nut 34 is at a gentle bevel angle which creates the mechanical advantage of pushing the ball 24 further inward. Further, the coupling nut thrust surface 60 is
The angle is angled to create a mechanical advantage that pushes the coupling nut 34 toward the receptacle 20. When the flange 29 of the receptacle body 22 comes into contact with the shoulder 54 of the plug shell 32, the movement stops, and there is no gap between the front end of the receptacle 20 and the shoulder 54 of the plug shell 32 (see FIG. 3) as shown in FIG. To do. The spring force of the coupling nut 34, the coupling nut securing surface 60, the receptacle ball 24 and the plug shell thrust surface 58 create a force in the axial direction to couple and secure the receptacle connector 20 and the plug shell 32 connector together. This mechanical advantage is so great that its position is maintained even when an axial force is exerted on the plug connector 30 as opposed to the receptacle connector 20.

Removal of the plug connector from its mated position is accomplished by pulling the coupling nut 34 and axially separating only the coupling nut 34 from the receptacle connector 20. This frees the region from the receptacle ball 24 to the outside in the circumferential direction, eliminating the restriction of the movement of the ball 24. The plug shell thrust surface 58 allows the balls 24 to move circumferentially outward and allows the plug connector 30 to move axially apart. The force of the spring releases the coupling nut 34 and the plug connector 30 and coupling nut 34 return to their initial state in which they can be coupled to the receptacle ball 24.

In FIG. 2, the plug connector 30 has moved into the receptacle connector 20 and is in a position where the ball 24 contacts the outer diameter of the plug shell 32. Coupling nut 3
4 contacts the receptacle ball 24, which pushes the coupling nut 34 to move it axially with respect to the plug shell 32, but not with respect to the receptacle connector 20.

In FIG. 3, the plug connector 30 is in a position where the receptacle ball 24 is close to the plug shell groove 58. At this time, the coupling nut fixing surface 60 acts on the receptacle ball 24 at an inclination such that the receptacle ball 24 has a mechanical advantage in the direction of the plug shell groove 50. As a result, it is on the plug shell thrust surface 58 that the ball 24 contacts the plug shell 32. This surface is also inclined in the axial direction, which is a mechanical advantage in axially fixing the plug shell 32 to the receptacle 20.

In FIG. 4, the plug connector 30 and the receptacle connector 20 are shown in a combined and fixed state.

A second embodiment of the invention is shown in FIGS. Although terms such as rear, front, right, left, etc. are used herein, these terms are only used in a relative sense.

The electrical connector 100 comprises a plug assembly 102 and a receptacle assembly 110. A plurality of contacts 92, 94, 96, and 98 are shown, which contacts may also be used for the electrical connector according to the first embodiment. The female contacts 92, 94 and the male contacts 96, 98 are respectively joined in a known manner. Contact 92 ~
The 98 must be aligned before mating with the plug assembly 102 and the receptacle assembly 110. In the first and second embodiments, it is advantageous that the push-pull connection system according to the invention suppresses axial and circumferential movement of the contacts.

As shown in FIGS. 5-12, the plug assembly 102 includes a coupling nut 120, a compression spring 122, a spring retainer 124, a second retaining ring 126, and a first retaining ring 12.
8, sleeve 130, and plug shell 132. By using a rotating sleeve with two cam-type sloping grooves, the bayonet connection can be conveniently used to connect and secure axial contacts.

The coupling nut 120 has an annular recessed area 140 in which a compression spring 122 is received. By applying a force to the spring retainer 124 rearward, the spring 122 pushes the coupling nut 120 rearward as shown in FIG. Spring retainer 124
Is a retaining ring 12 in the annular groove of the coupling nut 120.
Held by 6. The shoulder 158 on the plug shell 132 contacts the shoulder 133 exposed inside the sleeve 130. Shoulder on sleeve 1
33 is sandwiched between the retaining ring 128 and the shoulder 158 so as to rotate the sleeve 130 regardless of which direction the plug shell 132 moves. A plurality of keys 142 are protruded inward from the recessed portion to prevent the plug shell 132 from rotating in the circumferential direction. A plurality of protrusions 144 project inward from the coupling nut 120 and are arranged at equal intervals in the circumferential direction. The plug shell 132 has holding grooves 150, 1 inside the plug shell 132.
It is retained on the coupling nut 120 by a first retaining ring 128 and a retaining ring 126 that engage with each of the 52. Further, the plug shell 132 has a key groove 154, and the key groove 154 fits the key 142 of the coupling nut 120 when the plug shell 132 is held in the coupling nut 120. The plug shell 132 is retained by retaining rings 126, 128 as shown in FIGS. 5 and 6, which limits axial movement of the plug shell 132. The sleeve 130 includes a shoulder 158 and a retaining ring 1 retained in a groove 150 on the plug shell 132.
It is held axially by 28 but is rotatable.
The protrusion 144 in the coupling nut 120 axially contacts the coupling nut inclined groove 160 (see FIG. 9) in the sleeve 130.

The receptacle 110 has a plurality of protrusions 170 that fit into the receptacle inclined grooves 172.

The rotating sleeve 130 is used for the receptacle 11
0 protrusion 170 and coupling nut 120 protrusion 14
4 and interact with each other. The plug assembly 102 is
Coupling nut 1 having rotating sleeve 130 and protrusion 144
20 and a spring 122. Coupling nut 120
Is also fixed against rotation by a key 142 fitted in a key groove 154 in the plug shell 132. The purpose of the key 142 and the keyway 154 is to prevent the plug shell 132 from rotating when the protrusion 144 of the coupling nut 120 fits into the respective beveled groove 160 of the sleeve 130. The protrusion 144 of the coupling nut 120 is exerted by the spring 122 so as to come into axial contact with the end of the sleeve 130. this is,
At the position of the sleeve 130 before insertion, the axial movement of the sleeve 130 does not occur to a certain point, and the coupling nut protrusion 144 moves the contacts until they contact the respective inclined groove surfaces 160 of the sleeve 130. Sleeve 13
0 is the plug shell 132 and the receptacle shell 112.
It can rotate freely around the same axis as the axis.

The receptacle 110 has a protrusion 170, and the auxiliary inclined groove 17 on the plug connector sleeve when the plug connector 102 is coupled to the receptacle 110.
Works with 2. First, the receptacle protrusion 170 needs to be aligned with the inclined groove 172 of the receptacle protrusion. When the receptacle protrusion 170 is aligned with the slanted groove 172, the plug assembly 102 and the receptacle assembly 110 are pressed together into a fixed connection. These inclined grooves 172 are formed on the receptacle protrusion 170.
Inclined with respect to, creating the mechanical advantage of rotating the sleeve 130 while mating with the plug connector 102. The sleeve 130 rotates to reach the point where the coupling nut projection 144 fits into the coupling nut tilt groove 160 of the sleeve 130. Since the coupling nut inclined groove 160 is inclined, the sleeve 13 is centered on the axis thereof.
It creates the mechanical advantage of rotating 0. Spring 12
The energy of 2 creates a substantial rotational force on the sleeve 130. By this rotational force, a force for pushing the plug assembly 102 into the receptacle assembly 110 is transmitted and applied. In the sleeve 130, the plug shell 132 works with the receptacle shell 112,
Rotate until there is no gap as described below.
This mechanical advantage is significant and the position of the plug assembly 102 and the receptacle assembly 110 is maintained even when the plug connector assembly 102 is subjected to an axial force opposite to the receptacle assembly 110.

In order to remove the plug connector 102 from the combined fixed position, the connecting nut 120 is pulled, and only the connecting nut 120 is axially separated from the receptacle connector 110. As a result, the coupling protrusion 144 causes the inclined groove 16 to
It acts on the opposite surface of 0 to create a reverse rotation on the sleeve 130. The axial force of the coupling nut 120 causes the spring 122 until the coupling nut projection 144 is on the sleeve 130.
Compress. Further, when the coupling nut 120 is pulled, the sleeve 130 continues to be rotated by the receptacle shell protrusion 170. The receptacle shell protrusions 170 are pulled on the opposite side (relative to when the plug assembly 102 and the receptacle assembly 110 are mated) of the respective beveled grooves 172 on the sleeve 130, further rotating the protrusions 170 until they exit the beveled grooves. The plug connector sleeve 130, the coupling nut 120 with the protrusion 144 and the spring 122 return to their pre-insertion state awaiting the next coupling.

In FIG. 7, the plug connector 102 is
First, it contacts the receptacle connector 110. The receptacle protrusions 170 contact the respective inclined grooves 172 of the sleeve 130. The receptacle protrusion 170 is
It is aligned with the inclined groove 172. Coupling nut 120
Is in the pre-insertion state.

FIG. 8 shows a plug connector sleeve 130.
However, the joint nut protrusion 144 has just been rotated to a position where the joint nut protrusion 144 fits into the respective inclined groove 160. In this position, the force of the coupling nut spring 122 begins to be related to the rotation of the sleeve 130. By this operation, the receptacle connector 110
Into the plug connector 102 and the connectors are secured together.

9A, 9B and 9C show a sleeve 13
0 shows a view of the inclined grooves 160, 172 of FIG. 0 in which the coupling nut protrusion 144 and the receptacle shell protrusion 170 are
It is as if going to the positions shown in 8 and 9. These figures show how the angles of the inclined grooves are related to each other.

As shown in FIG. 9A, the protrusion 144 is in a position where it is stuck to the surface, the receptacle protrusion 170 is in the initial state, and the coupling nut 120 moves axially toward the receptacle assembly 110, so that the receptacle protrusion is 170 is fitted in the receptacle inclined groove 172, and the sleeve 130 is rotated. Although the coupling nut protrusion 144 remains fixed, the sleeve 130 rotates so that the protrusion 144 fits into the inclined groove 160 as shown in FIG. 9B. Continue to rotate, sleeve 13
0 is moved to the fixed connection state as shown in FIG. 9C. The axial movement of the sleeve 130 is determined by the plug shell flange 2
Stop when 9 contacts the front surface of the receptacle.

The angle of the receptacle inclined groove 172 is designed to rotate the sleeve 130 with a low component force.
Further, a high component force is applied in the axial direction of the sleeve 130.
The angle of the inclined groove of the sleeve 130 is such that a high component force is present to rotate the sleeve 130. Since the relative angles of the connecting nut inclined groove 160 and the receptacle shell inclined groove 172 are close to right angles to each other, the connecting nut protrusion 1
44, the force exerted by the spring 122 creates a state close to being fixed.

In FIG. 10, the connectors are shown fully mated and secured. Plug shell 13
2 is fixed to the receptacle shell 112 and eliminates movement between them. 11 and 12 are additional perspective views of sleeve 130.

It will be readily apparent to one of ordinary skill in the art that the present invention meets all of the above objectives. After reading the above specification, one of ordinary skill
Various modifications and replacements of equivalents and various other aspects of the invention broadly disclosed herein can be made. Therefore, the protection conferred herein is only limited by the definitions contained in the appended claims and their equivalents.

[Brief description of drawings]

The present invention is illustrated by way of example and not limitation. In the figures of the accompanying drawings, elements having the same reference numeral refer to like elements throughout.

FIG. 1 is a developed sectional view of a plug and a receptacle connector according to a first embodiment of the present invention. FIG. 1A is a right side view of a key groove in the receptacle body.

FIG. 2 is a view similar to FIG. 1, with the receptacle pushed in the direction of the arrow, with an initial gap between the front end of the receptacle and the shoulder of the plug shell.

FIG. 3 is a diagram in which a ball starts to fit into a groove in a plug and a gap is close to a fixed coupling state.

FIG. 4 is a view of the connector in a fixed connection state with no gap.

FIG. 5 is a side sectional view of the uncoupled receptacle and plug connector according to the second embodiment of the present invention.

FIG. 6 is a fully developed sectional view of a plug and a receptacle according to a second embodiment of the present invention.

FIG. 7 is a view similar to FIG. 5, with the projections of the plug and receptacle connector just in contact with the beveled sleeve and there is an initial gap between the front end of the receptacle and the shoulder of the plug shell.

FIG. 8 is a view similar to FIG. 7, in which the protrusion fits into the sleeve and the gap is reduced.

9A to 9C are views showing the relationship between the inclined groove of the sleeve and the protrusion.

FIG. 10 is a view of the connector in a fixed connection state.

FIG. 11 is a perspective view of a sleeve having a receptacle protrusion inclined groove according to the present invention.

FIG. 12 is another perspective view similar to FIG. 11.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor William Dee Polgio             United States 06795 Connecticut               Water town (72) Inventor Allen J. Bernardini             United States 96488 Connecticut               Sosbury Holly Hill Lane 37 (72) Inventor Paul Kozval             United States 06010 Connecticut               Bristol Winston Seaty               twenty five F-term (reference) 5E021 FA05 FA08 FB13 FB30 FC31                       FC36 FC40 HA07 HB11 HB20                       HC11 HC23 HC31

Claims (17)

[Claims] 1. A receptacle assembly having a receptacle connector holding a plurality of movable balls on its wall; a plug shell having a shoulder and an annular groove, a coupling nut having a shoulder and a thrust surface, said coupling. A plug assembly having a spring associated with a nut for biasing the coupling nut shoulder toward the plug shell shoulder; wherein the receptacle assembly and the plug assembly are in a non-bonded state and a fixed coupled state. Yes, the receptacle assembly and the plug assembly are configured such that the receptacle assembly and the plug assembly are pressed together and the balls are pushed inward in the annular groove circumferentially inward by a bias of the spring and a thrust surface. Retained Electrical connector characterized by comprising the binding state when the. 2. The electrical connector according to claim 1, wherein the movable ball extends inward in the circumferential direction and outward in the circumferential direction beyond the inner wall and the outer wall of the receptacle. 3. The electrical connector according to claim 2, wherein the main body of the receptacle has a plurality of lateral through holes, and the movable ball is held by the wall. 4. The electrical connector of claim 1, wherein the electrical connector has one or more electrical contacts. 5. The electrical connector of claim 1, further comprising a key on one of the receptacle assembly and the plug assembly and a keyway on the other of the receptacle assembly and the plug assembly. . 6. The coupling nut has an inclined thrust surface, and when the inclined thrust surface contacts the ball, a force is applied to the ball inward in the circumferential direction. The electric connector according to claim 1. 7. A receptacle assembly having a receptacle connector having a plurality of protrusions protruding outward in the circumferential direction and a plurality of contacts; and a plug shell having a plurality of contacts and having one of a key groove and a key. And a coupling nut having a plurality of protrusions protruding inward in the circumferential direction and having one of a key groove and a key, a spring for biasing the coupling nut in one direction, a coupling nut inclined groove and a receptacle inclined groove. A plug assembly having a rotating sleeve held by the plug shell; wherein the receptacle assembly and the plug assembly are in a non-bonded state and a fixed coupled state, and the receptacle assembly and the plug. The assembly is pressed together and the projections on the receptacle assembly and the coupling nut are Fitted to the serial rotating sleeve, rotating the sleeve, thereby when fixing the plug assembly and the receptacle assembly, the electrical connector, wherein the receptacle assembly and the plug assembly is in said fixed coupling state. 8. The electrical connector according to claim 7, wherein, in the uncoupled state, the coupling nut projection is in contact with an end portion of the rotary sleeve. 9. The electrical connector according to claim 7, wherein the coupling nut inclined groove is inclined at an angle smaller than that of the receptacle inclined groove. 10. The spring biases the coupling nut in the uncoupled state.
The electrical connector described. 11. The electrical connector according to claim 7, wherein the coupling nut and the plug shell are locked so as not to rotate with respect to each other. 12. When the receptacle protrusion is aligned with the receptacle bevel groove, the plug assembly moves toward the receptacle assembly to rotate the rotating sleeve into the fixedly coupled state. The electrical connector according to claim 7, which is characterized in that. 13. The plug shell axially moves when the receptacle assembly and the plug assembly are mated to cause the rotary sleeve to move axially. Electrical connector. 14. The electrical connector according to claim 7, wherein, in the uncoupled state, the coupling nut inclined groove and the coupling nut protrusion are not aligned with each other. 15. The electrical connector according to claim 8, wherein the spring biases the coupling nut projection to the end of the rotary sleeve. 16. A receptacle assembly having a receptacle connector having a plurality of protrusions protruding outward in the circumferential direction and a plurality of contacts; having a plurality of contacts,
A plug shell having one of a key groove and a key, a coupling nut having one of a key groove and a key having a plurality of protrusions extending inward in a circumferential direction to prevent rotation with respect to the plug shell; An electrical connector having a spring for biasing the coupling nut with respect to the coupling nut projection, a plug assembly comprising a coupling nut inclined groove and a rotary sleeve having a receptacle inclined groove and held in the plug shell. Wherein the receptacle assembly and the plug assembly are in an uncoupled state and a fixed coupled state, the receptacle assembly protrusion is aligned with the receptacle tilted groove in the uncoupled state, the receptacle assembly and the plug assembly. When they are pressed together, this causes the rotating sleeve to rotate. When the coupling nut protrusion and the coupling nut tilt groove are aligned by pushing the receptacle assembly and the plug assembly further, the rotary sleeve is further rotated, and the sleeve is axially moved and fixed. An electrical connector characterized by being brought into a coupled state. 17. The electrical connector according to claim 16, wherein the coupling nut inclined groove is inclined at an angle smaller than that of the receptacle inclined groove.