JPS6228292Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a small electric appliance such as an electric shaver, and particularly to a mechanism for inserting and removing a power supply plug therein.

In the conventional plug in/out mechanism installed in electrical equipment, for example, as seen in Japanese Utility Model Publication No. 56-24052, the plug base having a plug cutter is guided by a protrusion provided on the inner cover and removed from the plug case. The plug was inserted and taken out, and the operation was performed using a slide button connected to the base of the plug via an elastic body. For example, FIGS. 6 and 7 show an example of a conventional plug insertion/extraction mechanism. In this example, a power supply drive unit chamber 41 for batteries, motors, etc. of the main body case 40 is used.
A plug storage chamber 42 is arranged below the plug storage chamber 42, and a plug blade 43, a rail member 44 for sliding guide of the plug blade 43, and a plug base in which the pivot blade 43 is insert-molded. 45 and a plug operating member 46 attached to the plug base 45 are stacked vertically.
is a slit hole 47 provided in the bottom surface of the main body case 40 along which the plug base 45 slides.
It is configured to slide along the In this case, the operating member 46 protrudes outward from the bottom surface of the main body case 40, making it difficult to hold the device upright by bringing the bottom surface into contact with a desk top or the like. Therefore, it is necessary to form an annular rib 48 projecting outward by a dimension A from the bottom surface of the main body case 40 and use this annular rib 48 as a mounting surface for the equipment. In this way, in the conventional plug insertion/extraction mechanism, the sliding surface of the plug base and the sliding surface of the plug operating member are the same or parallel, and the sliding surface of the plug base is used as the mounting surface for the device. The annular rib was required, which had the disadvantage of increasing the external dimensions of the device.

The present invention was devised in view of this point, and in order to provide a small electric device with a plug insertion/extraction mechanism that can be stored effectively in a narrow storage space, the plug operating member is placed on the sliding surface of the plug blade. The purpose is to provide them orthogonally.

The structure is such that a plug blade stand with a pair of plug blades is slidably provided at the bottom of the main body case of a small electric device, and the plug blade stand can come into contact with the rail that guides the sliding direction and the plug blades. A lock member is installed between a plug receiver having a power supply terminal and the bottom plate of the main body case, and is engaged and fixed with a leg portion that is elastically engaged with a groove provided on the back surface of the plug blade holder. A lock knob of the lock member is passed through a slit hole at the bottom of the main body case to restrict its movement range, and a lock protrusion provided on the lock member and a lock knob provided on the inner surface of the main body case in which the lock protrusion is accommodated are provided. A locking mechanism is formed by the recess.

Therefore, the lock protrusion and the recess can be freely engaged and disengaged by the elasticity of the legs of the lock member without using a separate elastic body as in the conventional case. Moreover, since the locking member itself is pressed against the inner surface of the main body case by the elasticity of its legs, the locking knob can be used as an operating knob for inserting and removing the plug. In addition, by making the sliding surface of the plug blade perpendicular to the moving surface of the operating member of the plug, that is, the moving surface of the lock knob of the locking member, the sliding surface of the plug blade can be used as the bottom of the device and can be used on desks, etc. There is no need for conventional annular ribs when the device is placed on the device, and the external dimensions of the device do not increase.

Hereinafter, the present invention will be explained in detail based on an embodiment of a small electric device with reference to the drawings.

1 is the main body case of a small electrical device, which consists of an upper case 2 and a lower case 3, with plug blades 4 and 5 at the bottom.
A plug blade stand 9 having a shape and having guide grooves 6 and 7 is provided so as to be able to be taken in and out from a plug opening 10 provided on one side of the case 1.

The plug blade stand 9 includes a plug receiver 11 and a bottom plate 12.
The plug receiver 11 has rails 13, 14 that match the guide grooves 6, 7 for smoothly moving the plug blade stand 9, and rails 13, 14 that are in contact with the plug blades 4, 5. , power supply terminals 15, 16 for supplying power from the plug blades 4, 5 are provided, and the power supply terminals 15, 16 are provided with bosses 19, 20, . The bosses 19 and 20 are fixed by welding by crushing the heads of the bosses 19 and 20. The plug receiver 9 is clamped and fixed between the upper and lower cases 2 and 3 via ribs 21 and 22 on the inner surfaces of the upper and lower cases 2 and 3.

There is a generally arrow-shaped cut groove 2 on the back surface of the plug blade stand 9.
3 is provided perpendicularly to the sliding direction of the plug blade stand 9, and a leg portion 25 of a locking member 24 having an L-shaped cross section is accommodated in this cut groove 23. The leg portion 25 is an elastic leg portion made of synthetic resin and exhibiting a bifurcated shape,
The enlarged end portions 27 and 28 of the leg portion 25 are accommodated and locked in the wide portion 26 of the cut groove 23 against the stress in the expansion direction.

The locking member 24 is connected to the vertically provided leg portion 2.
5, and lock protrusions 29, 3 protruding from the shoulders thereof.
0, and a lock knob 31 vertically disposed approximately at the center of the lock protrusions 29, 30. Further, the upper case 2 is provided with a slit hole 32 through which the lock knob 31 moves, and recesses 33, 34 for storing the protrusions 29, 30 in their engagement positions. Locking claws 35, 3 locked on the side
6, and a slide knob 38 having a hole 37 approximately in the center through which the head of the lock knob 31 passes is slidably mounted from the outside of the upper case 2. The locking member 24 and the slide knob 38 are connected to each other so as to be sandwiched between the locking claws 35 and 36.

When assembling the above-mentioned locking plug in/out mechanism, the boss holes 17, 18 of the power supply terminals 15, 16 are
... through the bosses 19, 20 of the plug receiver 11, crushing their heads and welding and fixing them, aligning the rails 13, 14 of the plug receiver 11 with the guide grooves 6, 7 of the plug blade stand 9, and then After the wide part 26 and the enlarged tip end parts 27 and 28 of the leg part 25 of the lock member 24 are aligned and locked in the cut groove 23 on the back surface of the blade base 9, the lock knob 31 passes through the slit hole 32. Connect these members to the rib 2 so that
1, 22... by fitting the plug receiver 11 into the plug receiver 11,
The upper case 2 and the lower case 3 are joined and assembled into the main case 1, and finally the slide knob 38 is pushed against its engaging claws 35 and 36 against the elastic force, and the lock knob 31 is inserted into the hole 37. It is attached to the side of the slit hole 32 so as to pass through the slit hole 32.

The operating procedure for the locking plug in/out mechanism thus assembled is as follows.

When the plug blades 4 and 5 are stored inside the main case 1, the lock protrusions 29 and 30 are in the recesses 33 and 3.
3, and when it is desired to take the blades 4, 5 out of the main case 1 from this position, the lock knob 31 is pressed and the recesses 33, 33 and the lock protrusions 29, 30 are removed. When the engagement is released and the slide knob 38 is slid forward while maintaining this state, the plug blades 4 and 5 come out from the plug entrance/exit 10. When the plug blades 4 and 5 are completely taken out of the main case 1,
The locking protrusions 29, 30 are housed in the front recesses 34, 34 and are locked again to facilitate power supply by the blades 4, 5. Furthermore, when storing the plug blades 4, 5, press the lock knob 31 in the same manner to disengage the lock protrusions 29, 30 and the recesses 34, 34, and then move the slide knob 38 backwards to recess the recesses. The stored state can be maintained in the engaged position between the lock protrusions 29 and 30.

The slide knob 38 is not directly related to the insertion and removal of the plug blades 4 and 5, and the lock member 24 can be used alone to insert and remove the plug blades 4 and 5. Improvement and lock knob 31
The purpose is merely to regulate the amount of movement of

As described above, the present invention has a plug insertion/extraction mechanism that can easily fit into a small plug storage part of an electrical device by forming a locking member that directly engages with a plug blade base having a plug blade and performs the insertion/removal operation of the plug blade. This makes it possible to extremely downsize electrical equipment without causing any problems, and it also has practical advantages such as the fact that the locking member itself becomes the knob for operating the blade in and out, reducing the number of parts and simplifying the structure. The effect will be huge. In addition, when placing the sliding surface of the plug blade stand on the bottom of the device on a desk, etc., the problem of the operating member of the plug protruding from the bottom of the device and making it difficult to place the device is solved, and the conventional annular rib is not used. It is expected that this will have the effect of promoting miniaturization of equipment since there is no need to provide one.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of the main parts of a small electric device according to an embodiment of the present invention, Fig. 2 is a - sectional view of Fig. 1, Fig. 3 is an exploded perspective view of the main parts, and Fig. 4 is a small electric device according to the present invention. 5 is a cross-sectional perspective view of the main part of the device in FIG. 4, and FIGS. 6 and 7 are perspective views of the main part of the conventional example corresponding to FIGS. 4 and 5, respectively. FIG. 3 is a perspective cross-sectional view of essential parts. 9... Plug blade stand, 23... Cut groove, 24... Lock member, 25... Leg portion, 26... Wide portion, 2
7, 28... Tip enlarged portion, 29, 30... Lock protrusion, 31... Lock knob, 33, 34... Recess.

Claims (1)

[Scope of utility model registration request] A plug blade holder having a plug blade that is slidably attached along the bottom plate of the main body case, and a surface of the plug blade holder that faces the bottom plate is cut in a direction perpendicular to the sliding direction of the plug blade holder. a locking member having a leg portion elastically engaged with the groove and elastically biased toward one side of the main body case orthogonal to the bottom plate, and a rail for guiding the stopper blade. and a power supply terminal that can come into contact with the plug blade; a recess on the inner surface of the main body case that accommodates a lock protrusion that projects from the lock member toward one side of the main body case; A plug with a lock comprising a lock knob protruding from the lock member toward one side of the main body case, and a slit hole formed in one side of the main body case and regulating the movement range of the lock knob. A small electrical device with an access mechanism.