JPH0346464Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a plug with a locking mechanism in which a conductive pin and a cover protrude from an insulating case.

(Conventional technology and its problems) In conventional plugs with locking mechanisms, the structure of the locking mechanism is complex, prone to failure, lacking in reliability, and has a large number of parts, resulting in increased costs. , the unlock button was in a difficult to press position, and none of them were suitable.

The object of the present invention is to provide a plug with a locking mechanism that solves the above problems.

(Means for solving the problem) That is, in the present invention, a cylindrical cover to which a body holding a conductive pin is fixed is fixed to a cylindrical part that is a part of a hollow case, and A window is formed in the cover protruding portion from the cylindrical portion,
The shelf protruding from the body and the corner formed in the case form a hinge part with different levels, and buttons are connected to each other via the hinge parts on opposite sides of the central part, which is a part of the case. two support pieces on the back side of the body protruding from the cover, and two ends of elastic filaments surrounding the body at two corners on the front side of the body. The U-shaped arm of the button holds an elastic filament between the support piece and the corner, and the shelf and corner of the hinge part are supported at two longitudinally intermediate parts. A protrusion that extends and retracts through the window is formed at one end of the lock lever disposed through the window, and the other end of the lock lever is made circular and fitted onto the longitudinal center of the elastic filament.

(Function) In this configuration, when the buttons on opposite sides of the center of the case are pushed in, two ends of the elastic filament and two middle parts in the longitudinal direction are pushed into the body. The elastic filament is pressed and slid against the support piece and the corner, respectively, and the elastic filament is deformed so that its longitudinal center portion protrudes forward. Therefore, the other end of the lock lever that is fitted to the longitudinal center of the elastic filament protrudes forward, and the projection of the lock lever moves into the interior of the window using the corner of the hinge as a fulcrum. retreat to. When the button is released to release the pressed state, the elastic filament returns to its original shape due to its own elasticity, and as a result, one end of the lock lever retreats together with the longitudinal center of the elastic filament, causing the lock lever to protrude. The part returns to the position protruding to the outside of the window using the shelf part of the hinge part as a fulcrum.

Furthermore, when pressing the button with the finger of the hand, it is possible to grasp the case with that hand, and in this way it is possible to grasp the case and insert the cover into the mating socket. and,
When the cover is inserted into the socket, the protrusion of the lock lever protruding to the outside of the window is pushed by the socket against the elasticity of the elastic filament, and once retreats into the cover, the protrusion of the lock lever protrudes to the outside of the window. Then, it protrudes outside the window again and engages with the engaging portion on the socket side.

(Example) The plug with a locking mechanism of this example consists of a hollow case 1 made of synthetic resin, a cylindrical cover 3 in which an insulating body 9 holding a conductive pin 2 is inserted and fixed, and a cylindrical cover 3. A window 4 formed in a cover protruding portion from part 1b, a hinge part 5 formed in case 1, a lock lever 6 whose protrusion 6a at one end faces window 4, and elastic filament 7. button 8. The pin 2 passes through the body 9 and projects into the interior of the cover protrusion. Figure 6~
As shown in FIG. 10, a notch step 11 is formed at the upper front of the body 9, a lock lever housing groove 12 is formed at the lower front of the body 9, and the hinge portion 5 is formed between the groove 12 and the notch step 11. Shelf section 1 that constitutes a part
3, a total of four protrusions 14 are formed on the lower part of the front and back sides, and support pieces 15 for supporting both ends of the elastic filament 7 are provided on the upper part of the back side. An engagement groove 16 is formed in the lower part. As shown in FIGS. 11 to 14, the cover 3 has a cylindrical shape divided into two parts, and has a fitting hole 18 and a fitting recess 19 formed in the upper part thereof to fit each of the projections 14, Its fitting recess 19 and fitting hole 1
The engagement hole 2 is located opposite the engagement groove 16 between the
0 is formed, and a hemispherical protrusion 21 is formed below the window 4. As shown in FIGS. 1 to 5, the case 1
is L-shaped, and the center part 1a of the polygon and the center part 1a
It is a hollow body which is integrally equipped with a lower end cylindrical part 1b and a cord intake part 1c on both sides sandwiching it, and is a hollow body divided into two parts, and the lower end cylindrical part 1a is externally fitted into the body 9 through the cover 3. , a pair of engagement projections 23 provided on the inner surface of the lower end cylindrical portion 1a are connected to the engagement hole 2 of the cover 3.
0 and engages with the engagement groove 16 through the center portion 1b.
A corner portion 25 constituting the other portion of the hinge portion 5 is located on the inner surface of the central portion 1b at a location opposite to the shelf portion 13.
and button holes 26 on both sides of the central portion 1b.
has been formed. The button 8 is connected to the central part 1.
It hangs down from the upper ends of both sides of the button 8, and the connecting part between the button 8 and the center part 1b is made into a thin-walled hinge part 27. The elastic filament 7 is bent at six places and is arranged to surround the body 9 protruding from the cover 3.
Two end portions of the elastic filament 7 are supported by the support pieces 15, 15, two intermediate portions in the longitudinal direction of the elastic filament 7 are supported by the corner portions 29, 29, respectively, and the support piece 15 and the corner 29, the elastic filament 7 is held by the U-shaped arm 28 disposed in the holes 26, 26, and the lock lever 6 is formed by bending a metal plate, and its upper end is circular. The portion 6b is fitted onto the center of the elastic filament 7.

In the above structure, when assembling the plug, the upper circular part 6b of the lock lever 6 is fitted onto the center part of the elastic filament 7, and then the lock lever 6 is passed between the shelf part 13 and the corner part 25 of the hinge part 5. The fitting hole 18 and the fitting recess 19 of the cover 3
are fitted into each protrusion 14 of the body 9. Next, cover the lower cylindrical part 1a of the case 1, which is split into two, with a cover 3.
The engaging protrusion 23 is engaged with the engaging groove 16 of the body 9 through the engaging hole 20, and at the same time, both ends of the elastic filament 7 are fitted onto the button 8. It is inserted into the U-shaped arm 28. Subsequently, the mating surfaces of the case 1 may be heat-sealed to form the case 1 into one piece.

Next, the operation of the above configuration will be explained. First, when the case 1 is grabbed and the pin 2 and cover 3 are inserted into the socket 30 as shown in FIG. After that, two ends of the elastic wire 7 and two intermediate portions in the longitudinal direction are pressed and slid against the support pieces 15, 15 and the corner portions 29, 29 of the body 9, respectively, and the elastic wire 7 slides. The strip 7 is deformed so that its longitudinal center portion protrudes forward. Therefore, the other end of the lock lever 6 protrudes forward, and accordingly, the protrusion 6a of the lock lever 7 retreats into the interior of the window 4 using the corner 25 of the hinge portion 5 as a fulcrum. Furthermore, when the button 8 is released to release the pressed state, the elastic filament 7 returns to its original shape due to its own elasticity, and the other end of the lock lever 6 retreats together with the longitudinal center portion of the elastic filament 7. Then, the protrusion 6a of the lock lever returns to the position protruding to the outside of the window 4 using the shelf 13 of the hinge 5 as a fulcrum.

Although the above embodiment has been described using an L-shaped plug as an example, the present invention can also be applied to a straight-line plug.

(Effects of the invention) The plug with a locking mechanism of the present invention allows the action of grasping the case and the action of pushing the buttons on both sides of the case by hand into one action at the same time. The locked state can be released by the action of the button and the lock lever, and when the button is released, the locked state can be set by the action of the elastic filament and the lock lever, so it is extremely easy to operate. Since the button is integrally connected to the case, there is no need to make the button and the case separately, and the number of parts can be reduced accordingly. Furthermore, since there is no need for the lock lever itself to have spring properties, a member with greater rigidity can be used as the lock lever, which has the effect of easily increasing the lock strength. . Furthermore, since the hinge section that serves as the rocking fulcrum of the lock lever is constructed by arranging the shelf section on the body side and the corner section on the case side to face each other at different levels, there is no need to fix the lock lever to the case. The structure and assembly are simplified accordingly, which, together with the above-mentioned reduction in the number of parts, has the effect of helping to reduce costs.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a perspective view of the plug, Fig. 2 is a view in the direction of - arrow in Fig. 1, and Fig. 3 is a perspective view of the plug.
The figure is a view in the - direction of Fig. 2, Fig. 4 is a - direction view in Fig. 2, Fig. 5 is a - direction view in Fig. 2, Fig. 6 is a front view of the body, and Fig. 7 is a view in the - direction of the body. Same rear view, No. 8
The figures are the same side view, Fig. 9 is the same top view, Fig. 10 is the same bottom view, Fig. 11 is the front view of the cover, Fig. 12 is the same side view, Fig. 13 is the same top view, and Fig. 14 is the same side view. is the first
1 is a - arrow view of FIG. 1...Case, 1a...Central part of case, 3...
...Cover, 4...Window, 5...Hinge part, 6...Lock lever, 6a...Protrusion, 6b...Circular part, 7
...Elastic filament, 8...Button, 9...Body, 1
3... Shelf, 15... Support piece, 25... Corner, 2
6... Hole, 27... Hinge part, 28... U-shaped arm,
29... Corner.

Claims (1)

[Claims for Utility Model Registration] The cylindrical portion 1b of a synthetic resin hollow case 1 that integrally includes a central portion 1a, cylindrical portions 1b on both sides sandwiching the central portion 1a, and a code intake portion 1c.
an insulating body 9 holding a conductive pin 2;
A cylindrical cover 3 is inserted and fixed in such a way that it projects from the cylindrical part 1b, and a window 4 is formed in the part where the cover protrudes from the cylindrical part 1b. A shelf portion 13 protruding toward the inner surface of the central portion 1a and a central portion 1 of the case 1.
A hinge part 5 is constituted by a corner part 25 formed at a position opposite to the shelf part 13 in a different level on the inner surface of the case 1, and holes 26 are formed in both sides of the central part 1a of the case 1 located on opposite sides. , 26, and thin hinge parts 27, 27 are formed at the edges of the respective holes 26, 26.
The buttons 8 and 8 are integrally connected via the
These buttons 8, 8 are individually suspended outside the respective holes 26, 26, and further these buttons 8,
U-shaped arms 28, 28 are provided on the back side of the body 9 to be placed in the holes 26, 26, respectively, and support pieces 15, 15 are respectively protruded from two places on the back side of the body 9 protruding from the cover 3. At the same time, the body 9 is provided with corner portions 29, 29 at two places on the front side.
Both ends 2 of the elastic filament 7 are arranged to surround the
The elastic filament 7 is located at the supporting pieces 15, 15.
The two middle parts in the longitudinal direction are the corner parts 29, 29.
The supporting piece 15 and the corner portion 29
An elastic filament 7 is held by the U-shaped arm 28, and a lock lever 6 whose protrusion 6a formed at one end faces the window 4 of the cover 3 is connected to the shelf 13 of the hinge part 5. and the corner portion 25, and a position where the protrusion 6a protrudes to the outside of the window 4 when one end of the lock lever 6 is swung back and forth about the hinge portion 5. A circular portion 6b formed at the other end of the lock lever 6, which is configured to be displaced between the position of retraction into the inside of the window 4, is provided at two corners on the front side of the body 9. A plug with a locking mechanism, characterized in that the plug is fitted onto the longitudinal center of the elastic filament 7 between 29 and 29.