JPH0518823Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a switch device used in a small electric appliance such as an electric shaver, and relates to a locking mechanism thereof.

(B) Prior Art When trying to lock a switch member that slides with respect to an equipment case using another sliding member, it is difficult if the moving directions of the respective members move parallel to each other. An example of the former is Publication No. 57-51014. The technique disclosed in this publication is that a switch handle is slidably attached to a sliding hole in the housing of an electric shaver, and the switch handle is slidably attached to a locking hole that is perpendicular to the sliding hole. The switch handle is locked when it is positioned in the locking hole perpendicular to the locking hole, and the locking button that slides together with the switch handle is fitted into the fitting hole of the switch handle, and the locking button that slides together with the switch handle is inserted between the locking hole and the fitting hole. An elastic foot is movably disposed between the two and is provided at the lower part of the lock button to urge the lock button to fit into the lock hole when the switch handle is in the OFF state.

(c) Problems to be Solved by the Invention The problem to be solved by the invention is to construct a simple switch locking mechanism using two sliding members that move parallel to each other in the same direction.

(d) Means for solving the problem A switch operation knob and a lock operation knob are provided on the front surface of the device case so as to be movable up and down through a sliding hole formed in the front surface of the device case, and the inner surface of the device case. The switch board is made up of a switch board and a lock board that can be moved up and down in conjunction with the respective operation knobs, and the switch board is made up of two parts that are movable between a pair of articulation guide ribs that are erected on the inner surface of the equipment case. The lock board has forked elastic leg pieces, and the lock board has two forked elastic leg pieces that can be engaged with articulating bosses provided upright on the inner surface of the device case, and the lock board has two forked elastic leg pieces that can be engaged with articulation bosses provided upright on the inner surface of the device case, and the It has a blocking piece inserted into the elastic leg piece to prevent deformation of the elastic leg piece.

(E) Operation While the blocking piece of the lock board is inserted between the elastic leg pieces of the switch board, the elastic leg pieces cannot move between the guide ribs of the equipment case, and the movement of the switch board is prevented; The switch operation knob is locked. When the lock operation knob is moved and the blocking piece is removed from between the elastic legs of the switch board, the switch board can be moved by the switch operation knob.

(F) Embodiment The switch device of the present invention will be explained in detail below using an electric shaver as an example.

Reference numeral 1 denotes an electric shaver, which includes a main body case 2 made of synthetic resin divided into two parts, an outer cutter frame 3 made of die-cast aluminum that is placed and engaged on the upper part of the main body case 2, and an outer cutter frame 3 that is bent in an arch shape with respect to the outer cutter frame 3. It is equipped with a nickel electroformed outer blade 4 that is held in a fixed position, and has a switch operation knob 5 with a large area and a lock operation knob 6 with a small area on the front side.
and are attached so that they can slide vertically. The main body case 2 has a sliding hole 7 through which a pair of engagement claw pieces 5a and 5b formed on the back surface of the switch operation knob 5 pass, and an engagement claw piece formed on the back surface of the lock operation knob 6. Sliding hole 8 through which 6a and 6b pass
And, articulation guide ribs 9a, 9b and bosses 10 are provided horizontally below these sliding holes 7, 8.
is formed. And this guide rib 9a,
Elastic curved portions 9c and 9d are formed inward at 9b.

11 is a switch board that slides in the vertical direction along the inner surface of the main body case 2, and has engagement holes 12a and 12b in the upper part in which the locking claw pieces 5a and 5b of the switch operation knob 5 engage. The lower part has two fork-shaped elastic leg pieces 13a, 13b for articulation that can be engaged with and detached from the guide ribs 9a, 9b of the main body case 2.

Reference numeral 14 denotes a lock board that slides vertically along the inner surface of the main body case 2, and has an engagement hole 1 in which the locking claw pieces 6a, 6b of the lock operation knob 6 engage.
5 at the upper part, and two forked elastic leg pieces 16a, 16b for articulation that can be engaged with and detached from the other boss 10 of the main body case 2 at the lower part. Further, on the top of this lock board 14, there is provided an elastic leg piece 1 of the switch board 11.
It has a blocking piece 17 that can be inserted between 3a and 13b. At the lower end of one of the elastic leg pieces 13a, 13b, a guiding slope 13 is provided so that the blocking piece 17 can be easily inserted.
c, 13d are formed.

Next, the operation of the above-mentioned switch operation will be explained with reference to FIGS. 3 and 4.

Figure 3 shows the locked state, with the lock operation knob 6
is in the upper "LOOK" position, and the switch operation knob 5 is in the lower "OFF" position. At this time, the blocking piece 17 of the lock board 14 is located between the elastic legs 13a, 13b of the switch board 11, preventing inward deformation of the elastic legs 13a, 13b. Therefore, the elastic leg pieces 13a, 13b are prevented from moving by the curved parts 9c, 9d formed on the guide ribs 9a, 9b of the main body case 2, and move the switch board 11 and the switch operation knob 5 upward in the "ON" direction. cannot be moved. When the lock operation knob 6 is moved downward to the "RELEASE" position as shown in Figure 4, the switch board 1
1 from between the elastic leg pieces 13a and 13b of the lock board 1.
No. 4 blocking piece 17 is removed. In this state, the elastic legs 13a and 13b of the switch board 11 are deformed and movable along the guide ribs 9a and 9b, so that the switch board 11 is also moved upward by the articulated upward movement of the switch operation knob 5. It becomes possible to move.

(g) Effects of the invention As explained above, the present invention provides a switch operation knob and a lock operation knob that are vertically movably disposed on the front surface of the device case through a sliding hole formed in the front surface of the device case, and the device. It consists of a switch board and a lock board that can be moved up and down on the inner surface of the case in conjunction with the respective operation knobs, and the switch board moves between a pair of articulating guide ribs that are erected on the inner surface of the equipment case. The lock board has a two-pronged elastic leg piece that can be engaged with an articulation boss provided upright on the inner surface of the device case, and Since it has a blocking piece that is inserted between the legs and prevents the deformation of the elastic leg, two knobs are used in cases where the main switch and lock mechanism have to be separated due to design or structural reasons. This has the effect of providing a simple and reliable switch device with a locking mechanism suitable for moving in parallel.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the main parts of the switch device of the present invention, Fig. 2 is an overview perspective view of the electric shaver, Fig. 3 is an explanatory plan view in the locked state, and Fig. 4 is an explanatory plan view in the unlocked state. be. 2... Case, 7, 8... Sliding hole, 5... Switch operation knob, 6... Lock operation knob, 11...
Switch board, 14...Lock board, 9a, 9b
...Guide rib, 10...Boss, 13a, 13b,
16a, 16b...Elastic leg pieces, 17...Blocking pieces.

Claims (1)

[Scope of utility model registration request] A switch operation knob and a lock operation knob are provided on the front surface of the equipment case so as to be movable up and down through sliding holes formed in the front surface of the equipment case, and the inner surface of the equipment case can be moved up and down in conjunction with each of the operation knobs. The switch board includes a switch board and a lock board that are movable, and the switch board has forked elastic legs that are movable between a pair of articulating guide ribs erected on the inner surface of the equipment case. The board has forked elastic legs that can engage with articulating bosses erected on the inner surface of the device case, and is inserted between the elastic legs of the switch board to prevent deformation of the elastic legs. A switch device characterized by having a blocking piece.