JPS5927588B2 - Electric razor switch structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a switch structure for an electric shaver, more specifically,
The present invention relates to a switch structure for an electric shaver that has a lock button that fixes a switch bundle to a stop position of a motor that drives an inner cutter.

Conventionally, in the case of an electric shaver in which the power is turned on and off using a switch bundle having this kind of lock button, FIG.
As shown in Fig. b, the lock button 11 protrudes outward from the switch bundle 10, so the lock button 11 will not close when the switch bundle 10 is placed face down on a table or when the electric razor is placed in a bag or the like. If the switch bundle 10 is pushed in, the switch bundle 10 may inadvertently move and turn on the power, or the lock button 11 may be damaged.Furthermore, the lock button 11 protrudes during operation, making it difficult to use with the finger. The problem was that it was not good.

The present invention has been made in view of the above points, and its main purpose is to prevent the switch bundle from being unlocked unexpectedly and to prevent the switch from being accidentally turned on when not in use. There is no electric razor switch structure to provide.

Another object of the present invention is to provide a switch structure for an electric shaver in which fingers can easily fit onto the switch bundle and the switch bundle can be easily operated.

The present invention will be described in detail below based on embodiments shown in the figures.

The switch structure of the electric shaver according to the present invention includes a switch handle 10 that is slidably attached to one surface of a housing 1 having an inner cutter 3 and an outer cutter 4 on the upper part, and a switch handle 10 that is mounted in the switch bundle 10 in the inner and outer directions of the housing 1. A button that moves the switch bundle 10 to the motor 1 that drives the inner blade 3.
2, the lock button 11 is fixed at the stop position of 2, and only when the housing 1 is pressed, the switch bundle 10 is slid and the motor 12 is driven.
An annular rib 13 protrudes from the periphery of the outer surface of the switch handle 10, and the outer surface of the lock button 11 is in contact with the surface of the annular rib 13 of the switch handle 10 and the road surface at the position where the lock button 11 protrudes outside the housing 1. In this embodiment, the switch handle 10 moves in three operating positions (up and down), and when the switch handle 10 is pushed up to the uppermost position, the trimmer blade block 45 protrudes from one surface of the housing 1. An example is shown in which the movable blade 46 of the trimmer blade block 45 is applied to an electric shaver with trimmer blades driven by the motor 12.

That is, the power to the motor 12 is cut off at the lowest position of the switch handle 10, and the switch handle 1
When the movable blade 4 of the trimmer blade block 45 is moved, the inner cutter 3 is driven when the inner cutter 3 is moved, and when the inner cutter 3 is moved one step higher, the trimmer blade block 45 protrudes outward as shown in FIG.
6 is now driven.

As shown in FIG. 6, the housing 1 is composed of front and rear halves 1.
4.15 and a U-shaped frame 16, it is formed into a thin box shape with a rectangular blade holder 2 on the top surface, and a motor 12, battery 7, and charging section 8 are housed inside.

Each half body 14.15 is molded from synthetic resin into a shape in which a peripheral wall 17 extends from the periphery of a rectangular face plate.
Both halves 1 with Ts butted together and upper parts joined with screws 18
4 and 15 are fitted into a U-shaped frame 16 to form the housing 1.

As shown in the figure, the U-shaped frame 16 has a substantially C-shaped cross section and is molded from synthetic resin, and has flanges 20 that protrude inward from both widthwise ends of the side frames 19 and 19 over the entire length of the upper and lower sides. half body 1
Both halves 14.15 are held within the U-shaped frame 16 by fitting into locking grooves 21 formed on both sides of the surfaces of the halves 14.15, which extend approximately the entire length in the vertical direction. The joint between the side and lower surfaces of the body, that is, the butt part between the peripheral walls 17, is covered with a U-shaped frame 16 to prevent hair chips, dirt, etc. from entering the inside through the gap created at the joint between the two halves 14 and 15. It is designed to prevent

The motor 12 is inserted into the housing 1 by directing its output shaft 36 into the window 32 of the blade holder 2 formed on the upper surface of the housing 1.
The motor 120 is located at the center of the upper part of the motor 120 and is driven by batteries 7 housed on both sides of the motor 120.

An eccentric cam 33 is attached to the output shaft 36.
An upwardly protruding eccentric shaft 34 is connected to a drive element 35 whose both ends are fixed to the blade holder 2 and can swing in the left and right direction, and the inner cutter block 31 connected to the driver 35 is moved above the blade holder 2. It moves back and forth.

The inner cutter block 31 is constructed by arranging a large number of inner cutters 3 in parallel on a base, and connects the window 32 of the blade holder 2 with a connecting portion 38 protruding from the bottom surface.
It is coupled to the connecting shaft 40 that protrudes further.

The window 32 is covered by a dustproof plate 41 so as to surround the connecting shaft 40, and prevents sink debris accumulated on the blade holder 2 from entering the housing 1.

The outer cutter frame 5 is removably attached to the upper end of the housing 1, so that the tips of spring-loaded lock pins 43, 4, which protrude outward from both sides of the cutter holder 20, are on the outside. The blade frame 50 is held in the housing 1 by fitting into the recesses 9 provided on the inner surface of the side walls 6j6, and the thin plate-like outer blade 4 is bent into a semicylindrical shape on the upper part of the outer blade frame 5. The inner cutter 3 slides along the inner surface of the outer cutter 4 to cut the hair caught by the sink introduction hole of the outer cutter 4.

The switch handle 10 is housed in a recessed part 37 formed on one half body 14 so as to be slidable in the vertical direction, and can be stopped at three operating positions (up and down), as shown in FIG. It is molded into a rectangular shape with an opening window 39 in the upper half and a closed lower half, and the legs 22 protruding on both sides of the back are passed through the slits 23 provided on the bottom of the recessed step 37, and the legs are 2
The protrusions 24 at the two tips are engaged with the back surface of the half body 14 and held within the four-step portion 37 .

As shown in FIG. 5, this switch handle 10 is connected to a switch lever 50 that is vertically movable within the housing 1, and is used to move the switch handle 10 one or two steps above the lowest position. When the switch lever 50 is pushed up, a pair of contact pieces 52 fixed at fixed positions inside the pufferfish 1 come into contact with a contact plate 51 at the lower end of the switch lever 50, thereby rotating the motor 12.

In addition, the switch lever 50 has a ball 5 which is biased outwardly by a coil spring 53 on the side opposite to the switch handle 10.
4 is attached, and this ball 54 rebounds against a sawtooth section 56 formed on the inner wall of the housing 1, that is, on the inner wall of the half body 15 on the opposite side from the switch handle 10, in which three vertically continuous valleys 55 are formed. As the switch handle 10 moves up and down, the hole 54 moves between the troughs 55, and the switch handle 10 stops at a position where the ball 54 fits within each trough 55.

The lock button 11 is located at the opening window 39 of the switch handle 10.
The shaft pins 25 are formed into a horizontally long rectangular shape that fits over the entire surface of the opening window 39, and protrude from the upper ends of both sides.
A pair of guide pieces 27 that are pivotally attached to the switch bundle 10 and protrude from both sides of the lower end of the back surface are inserted into the recessed step 37.
The switch bundle 10 is made to protrude into the housing 1 through the guide groove 28 provided on the bottom surface of the switch bundle 10, and the locking protrusion 29 at the tip of the guide piece 27 is locked to the back surface of the half body 14 at the periphery of the guide groove 28. By sliding in the vertical direction and rotating around the shaft pin 25, the
The projecting piece 61 at the lower end of the lock button 11 is biased outwardly by a U-shaped return spring 60 housed between the lock button 11 and the bottom of the recessed step 37. is held in a position where it is engaged with a protrusion 62 protruding from the lower edge of the opening window 39.

Further, a trapezoidal projection 63 protrudes from the back surface of the half body 14 at the periphery of the guide groove 28 at a position corresponding to directly above the locking projection 29 of the lock button 11 when the switch bundle 10 is at the lowest position. Unless the button 11 is pushed into the housing 1, the locking protrusion 29 collides with the lower surface of the trapezoidal protrusion 63 and the switch bundle 10 is locked so that it cannot move upward.
0, press the lock button 11 as shown in Figure 9.
is pushed in against the spring force to move the locking protrusion 29 to the rear of the trapezoidal protrusion 63, and operate the switch bundle 10 while holding down the lock button 11 so as to pass over the rear surface of the trapezoidal protrusion 63. .

In addition, when lowering the switch bundle 10, the locking protrusion 2
9 is guided downward along the slope 64 of the trapezoidal projection 63 and overcomes the trapezoidal projection 63, and the switch bundle 10 can be lowered without pressing the lock button 11.

The return spring 60 has one side that fits into a boss 66 on the back surface of the lock button 11, and the other side of the return spring 60 that slides along the bottom of the recessed step 37.

Here, an annular rib 13 protrudes along the entire circumference of the outer surface of the switch bundle 10, and the lock button 11
When the lock button 11 is in a position protruding outside the housing 1, the outer surface of the lock button 11 is in contact with the outer surface of the annular rib 13 and the road surface. When placing the switch bundle 10 face down or storing it in a bag, external force concentrates on the lock button 11 and the lock button 1
This prevents the lock button 11 from being damaged and the lock button 11 becoming unlocked and being turned on.

Further, the inner peripheral edge of the annular rib 13 is an upper front surface 67 whose thickness gradually decreases as it goes inward.
3 and moves the switch bundle 10, and the operability when moving the switch bundle 10 while pressing the lock button 11 is good, and the upper front surface 67 is difficult to attract beard debris. Even if the sink debris adheres, it can be easily removed along the curved surface of the upper front surface 67.

As described above, in the present invention, since the annular rib is provided on the outer surface periphery of the switch bundle, when moving the switch bundle, the fingers can be placed on the annular rib, and the switch bundle has good operability. Moreover, the lock button is housed within the annular rib of the switch bundle, and the outer surface of the lock button is placed between the annular rib surface of the switch bundle and the road surface at the position where the lock button protrudes outside the housing, so that the lock button is always inside the switch bundle. The lock button does not protrude from the switch bundle and locks when placed on a table with the switch bundle facing down or when placed in a bag etc. It is a device that can reliably prevent the button from being pushed in and causing the switch to move an unnecessary amount and turn on the power, and the lock button will not be damaged and can be used safely. .

[Brief explanation of the drawing]

FIGS. 1a and 1b are a schematic front view and a schematic perspective view showing a conventional example,
FIG. 2 is a front view showing one embodiment of the present invention, FIG. 3 is a side view of the same, FIG. 4 is a partially cutaway front view of the same, and FIG. 5 is a partially omitted side sectional view of the same. Figure 6 is a partially omitted exploded perspective view of the same as the above, Figure 7 is a sectional view showing the main parts of the same, Figure 8 is an exploded perspective view of the switch bundle, lock button, and return spring used in the same, and Figure 9 is an exploded perspective view of the same as the above. Explanatory diagram of the same action as above, FIG. 10a. b is a perspective view showing an example of use of the same as above, and 1 is a housing, 3 is an inner cutter, 4 is an outer cutter, 10 is a switch bundle, 11 is a lock button, 12 is a motor, and 67 is an upper front surface.

Claims (1)

[Claims] 1. A switch bundle that is slidably attached to one surface of a housing having an inner cutter and an outer cutter on its upper part, and a switch button that moves in the inner and outer directions of the housing within the switch bundle. It consists of a lock button that is fixed at the stop position of the motor that drives the inner blade, and that slides the switch bundle to drive the motor only when the housing is pressed against the side of the housing.
3 stands out! and the outer surface of the lock button housed within the annular rib of the switch bundle is in contact with the annular rib surface of the switch bundle and the road surface at a position where the lock button protrudes outside the housing. . 2. The switch structure for an electric shaver according to claim 1, wherein the inner peripheral edge of the annular rib has an upwardly curved surface whose wall thickness gradually decreases as it goes inward.