JP2002260783A - Locking mechanism of electric cable connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a locking mechanism having a good workability when jointing a plug and a receptacle. SOLUTION: For the locking mechanism, fitting a plug and receptacle or a plug and adapter, a lock bar 3, movable only in the axial direction, is fixed to the outer periphery of a barrel 4, and a flange is formed at one side of the inner periphery of a coupling nut 5, and a concave part, setting the moving range of the lock bar, is formed at the other side of the flange. Stop grooves, into which the lock bar is fitted, and coming off from the lock bar when the coupling nut is rotated, are formed at both ends of the concave part, and a tapered surface, which becomes higher as it comes closer both ends, is formed at both ends of the concave part surface, and the top part of the flange surfaces is formed lower than the surface excluding the concave part surface of the flange surface, and an elastic body, pushing the lock bar toward another side of the lock bar at the inner periphery surface of the coupling nut, is mounted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire connector locking mechanism.

[0002]

2. Description of the Related Art By inserting a plug into a receptacle and rotating the coupling nut, a projection projecting from the inner peripheral surface of the coupling nut enters along a thread-shaped groove provided on the outer periphery of the receptacle. In the conventional wire connector locking mechanism in which the plug and the receptacle are joined along the groove, the coupling nut and the barrel are fixed in combination, so that the barrel enters the receptacle and the tip of the barrel hits the inner wall of the receptacle. ,
When the coupling nut is further turned, the coupling ends when a portion parallel to the plane of the projection of the coupling nut reaches a portion parallel to the plane of the groove of the receptacle.

[0003] This structure is conventionally well known and is called a bayonet lock. With this conventional bayonet lock, the coupling nut was not fixed when the plug was alone, so when coupling, hold the end bell of the plug with one hand, align the key of the barrel with the key groove of the receptacle, and apply the plug to the receptacle The nut was turning.

[0004]

SUMMARY OF THE INVENTION In the present invention, when connecting a plug and a receptacle, the keyway of the receptacle and the key of the barrel are inserted together, and then the coupling is turned to find the lock start position of the coupling. An object of the present invention is to provide a lock mechanism with good workability by fixing a coupling at a lock start position before fitting without working.

[0005]

The means of the present invention are as follows. (1) In a lock mechanism that fits a plug and a receptacle or a plug and an adapter, a lock bar that can move only in the axial direction is fixed to the outer periphery of the barrel, and a flange is provided on one side of the inner peripheral surface of the coupling nut. On the other side of the lock bar is formed a concave portion serving as a range of movement of the lock bar, the both ends of the concave portion is provided with a stop groove which fits the lock bar, and is turned off from the lock bar by turning the coupling nut, and the concave surface becomes higher as approaching both ends. The top of the tapered surface is formed lower than the surface of the flange surface other than the concave surface, and an elastic body that pushes the lock bar to the other side from the lock bar on the inner peripheral surface of the coupling nut is attached. . (2) In a lock mechanism for fitting a plug and a receptacle or a plug and an adapter, a lock bar that can move from the center to the outside is fixed to the outer periphery of the barrel, and the lock bar is fixed to the barrel with a coupling nut. At the contact position, a concave portion directed in the rotation direction is provided at a fixed angle from the center, a stop groove is formed at both ends of the concave portion in which the lock bar fits, and the concave portion has a width in which the lock bar can move, and as it approaches the both ends, The width does not change, and the inner peripheral surface is provided with a tapered surface that is higher, the top of the tapered surface is lower than the other surface other than the concave portion from the center, and the elastic body is attached to the lock bar, Attached to a rock bar that has stored repulsion.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a first embodiment shown in FIGS. 1 to 5 will be described.

In FIG. 1, 1 is a receptacle, and 2 is a plug.

Reference numeral 3 denotes a lock bar fixed on the outer periphery of the barrel 4 so as to be movable only in the axial direction. Numeral 5 denotes a coupling nut fitted to the receptacle 2, which climbs a tapered surface 9 provided in the axial direction, and a flange 6 is provided on one side of the inner peripheral surface of the coupling nut 5 in the groove 10. On the other side of the flange 6, a concave portion 7 in the moving range of the lock bar is formed. The lock bar 3 fits into both ends of the recess 7, and the lock bar 3 falls into the groove 10.
Is pulled out of the groove 10 by applying a rotational force to the coupling nut 5, but only in the direction within the lock bar movement range (see FIG. 2) due to the depth of the groove 10 and the shape of the tip of the lock bar 3. There is no. That is, the coupling nut 5 can rotate only within a range in which the lock bar 3 can move.

The concave portion 7 forms a tapered surface 9 which becomes higher as it approaches both ends, and the top of the tapered surface 9 is lower than the surface of the flange 6 other than the concave portion 7 surface. An elastic body 12 for pushing the lock bar 3 is mounted on the other side of the lock bar 3 on the peripheral surface.

Next, in a second embodiment shown in FIGS. 6 to 9, a lock bar 3 which can move from the center to the outside is fixed to the outer periphery of a barrel 4, and a tapered surface 9 is formed on an inner peripheral surface 11 of the coupling nut 5. And a recess 7 is provided at a position in contact with the lock bar 3 fixed to the barrel so as to be at a constant angle from the center in the rotational direction. The tapered surface 9 has a tapered surface 9 whose width does not change and the inner peripheral surface becomes higher as it approaches both ends of the concave portion 7 having a width in which the lock bar can move. Get away lower. The elastic body 12 is mounted inside the lock bar 3, and the lock bar 3 having a repulsive force in the outward direction is provided. Reference numeral 15 in FIG. 8 indicates a spring washer.

[0011]

According to the present invention, in the plug alone, the lock bar is accommodated in the stop groove of the coupling nut, and is fixed at the angle at which the coupling nut starts locking before being fitted to the receptacle. So, if the coupling is aligned, the barrel key and the keyway of the receptacle can be aligned, and while holding the end bell of the plug with one hand as in the past, aligning the keyway of the barrel with the keyway of the receptacle, the other Because the coupling nut can be fitted without rotating it by hand, it can be easily installed even when working with only one hand in a high place or a narrow place, and falls into the lock bar stop groove when locking is completed. The completion of the connection can be confirmed by the sound and feel, and when releasing the connection, turn the coupling nut in the opposite direction to that at the time of connection to remove it. Fell in the lock bar stop groove when it becomes in that state, because Hazuseru confirmed by sound and feel, the coupling and uncoupling work is easy, is ensured.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view and a front view of a plug showing a locking mechanism of a power connector according to the present invention.

FIG. 2 is a longitudinal sectional front view of the coupling nut according to the first embodiment at the time of locking with a barrel inserted into the coupling nut;

FIG. 3 is a longitudinal sectional side view at the time of locking in a state where the plug and the receptacle are connected.

FIG. 4 is a developed view of the inner surface of the coupling nut (when locked).

FIG. 5 is an enlarged view of a tapered portion and a groove in FIG. 3;

FIG. 6 is a perspective view of a coupling nut.

FIG. 7 is a longitudinal sectional front view at the time of locking with a barrel inserted into a coupling nut of a second embodiment.

FIG. 8 is a longitudinal sectional side view at the time of locking in a state where the plug and the receptacle are combined.

FIG. 9 is a longitudinal sectional view of a coupling nut.

FIG. 10 is an expanded view of the inner surface of the coupling nut.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Receptacle 2 Plug 3 Lock bar 4 Barrel 5 Coupling nut 6 Flange 7 Concave part 9 Tapered surface 10 Groove 11 Inner peripheral surface 12 Elastic body

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[Procedure amendment]

[Submission date] March 7, 2001 (2001.3.7)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

Reference numeral 3 denotes a lock bar fixed on the outer periphery of the barrel 4 so as to be movable only in the axial direction. Numeral 5 denotes a coupling nut fitted to the receptacle 2, which climbs a tapered surface 9 provided in the axial direction, and a flange 6 is provided on one side of the inner peripheral surface of the coupling nut 5 in the groove 10. On the other side of the flange 6, a concave portion 7 in the moving range of the lock bar is formed. The lock bar 3 fits into both ends of the recess 7, and the lock bar 3 falls into the groove 10.
Is removed from the groove 10 by applying a rotational force to the coupling nut 5, but the lock bar movement range depends on the depth of the groove 10 and the shape of the tip of the lock bar 3 between the two arrows Y in FIG. There is no escape to the outside, that is, the portion X in FIG. The coupling nut 5 can rotate only within a range in which the lock bar 3 can move.

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Figure 2

[Correction method] Change

[Correction contents]

FIG. 2

[Procedure amendment 3]

[Document name to be amended] Drawing

[Correction target item name] Fig. 5

[Correction method] Change

[Correction contents]

FIG. 5

Claims (2)

[Claims] In a lock mechanism for fitting a plug and a receptacle or a plug and an adapter, a lock bar movable only in the axial direction is fixed to an outer periphery of a barrel, and a flange is provided on one side of an inner peripheral surface of a coupling nut. On the other side of the flange, a recess is formed to be the range of movement of the lock bar. At both ends of the recess, the lock bar is fitted, and by turning the coupling nut, a stop groove is provided which comes off the lock bar, and the recessed surface approaches the both ends. The upper surface of the tapered surface is formed lower than the surface other than the concave surface of the flange surface, and an elastic body that pushes the lock bar to the other side from the lock bar on the inner peripheral surface of the coupling nut is attached. Locking mechanism for the wire connector. 2. A lock mechanism for fitting a plug and a receptacle or a plug and an adapter, wherein a lock bar which is movable from the center to the outside is fixed to the outer periphery of the barrel, and the lock is fixed to the barrel with a coupling nut. At the position where the bar is in contact, a concave portion directed in the rotation direction is provided at a fixed angle from the center, and a stop groove is formed at both ends of the concave portion in which the lock bar fits, and the concave portion has a width in which the lock bar can move and approaches the both ends As the width does not change, the inner peripheral surface is provided with a tapered surface that becomes higher, and the top of the tapered surface is lower than the other surface other than the concave portion from the center, and the elastic body is mounted inside the lock bar. A lock mechanism for electric wire connectors attached to a lock bar that stores repulsive force in the outward direction.