JPS628862Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electric shaver, and its purpose is to provide an electric shaver that is slim and has a waterproof function.

Electric shavers need to be made thinner in order to improve their usability, but to do so, the switch must also be made smaller. However, in the case of a device that is used frequently, such as a switch, operability must not be compromised, and the number of parts increases, resulting in a larger space. or,
Do not store your electric razor in a humid bathroom,
There was a problem that when the beard waste was washed with water, water entered the inside of the device, causing short circuits and malfunctions.

The present invention has been devised in view of the above-mentioned problems, and will be described below with reference to the drawings showing embodiments of the present invention. In FIG. 1, the electric shaver includes a thin cylindrical housing 1 with openings at its upper and lower ends, a blade block 2 that is attached to and removed from the upper end of the housing 1, and a battery cover 3 that closes the opening at the lower end of the housing 1.
switch 4. Figures 2 to 8
In the figure, the housing 1 is comprised of a first housing 5 made of synthetic resin, and a second housing 7 screwed onto the first housing 5 with screws 6. The motor 8 is housed in the first housing 5, and a rotating shaft 11 of the motor protrudes from a first opening 10a of a ceiling plate 9 that closes one end of the first housing 5. The current-carrying metal fitting 12 is made of a conductive material, and its end portion 13 is bent to face the motor 8, and the bent portion 14 is inserted into the second opening of the ceiling plate 9 with the bent portion 14 protruding from the ceiling plate 9. 1
It is inserted from 0b. The outer periphery of the motor 8 and the end portion 13 of the current-carrying metal fitting 12 constitute a contact point 4a of the switch. A current-carrying metal fitting 12 is attached to the outer periphery of the motor 8.
An insulating plate 15 is attached to the end of the motor 8 to prevent a short circuit between the motor 8 and the motor 8, and an anode plate 17 that contacts the anode of a battery 16 that serves as a power source for the motor 8 is fixed to the end of the motor 8. The battery holder 18 is made of a synthetic resin material and has a cylindrical shape, and the side wall of the battery holder 18 has a recess 1 formed in the inner peripheral body of the first housing 5.
A pair of elastic protrusions 20 that fit into the battery holder 9 , and a spring body 21 that presses the motor 8 on the upper surface of the battery holder 18 .
A recess 22 for supporting the battery holder 18 and a screw portion 23 for attaching the battery cover 3 are formed on the lower surface of the battery holder 18, respectively, and the spring body 21 interposed between the motor 8 and the battery holder 18 is in a compressed state. The elastic protrusion 20 is fitted into the recess 19. The energizing ring 24 is made of a conductive material, and has a locking protrusion 26 formed on the side wall that fits into a locking hole 25 formed in the side wall of the battery holder 18. It has been inserted and is in contact with the current-carrying metal fitting 12. The battery cover 3 is made of a bottomed cylinder made of synthetic resin, and a terminal 28 made of a conductive material is accommodated in the bottom. The terminal 28 has a battery contact portion 2 that contacts the cathode of the battery 16.
9a, a current-carrying ring contact portion 29b that contacts the current-carrying ring 24 is formed, and by attaching the battery cover 3 to the threaded portion 23 of the battery holder 18, the battery contact portion 29a comes into contact with the cathode of the battery 16; The energizing ring contact portion 29b is brought into contact with the energizing ring 24. The O-ring 30 is made of rubber and is provided on the joint surface between the battery cover 3 and the battery holder 18. The sealing means 31 is made of rubber, and has an opening 32 through which the motor shaft 11 passes. The sealing means 31 is fitted into an annular protrusion 33 formed on the ceiling plate 9 and is pressed against the first housing 5 and the support plate 34 to be attached in a watertight manner. The support plate 34 is attached by being press-fitted into a screw boss 35 formed on the ceiling plate 9, and an annular projection 36 is formed on the support plate 34 in the direction in which the rotating shaft 11 of the motor projects. The annular projection 36 has a hook-shaped elastic projection 3 at the tip.
8 is formed through a slit 39, and the switch lever 37 is rotatably fitted loosely into the outer peripheral body of the protrusion 36 and is prevented from coming off by the elastic protrusion 38. The switch handle 40 is made of a synthetic resin material and is provided at a position opposite to the position of the current-carrying metal fitting 12. An engaging protrusion 41 formed on the switch handle 40 is inserted and locked into an opening 42 formed on the second housing 7, and is also fitted into a recessed notch 43 formed on the switch lever 37. The switch lever 37 is provided with a click protrusion 44 and a recessed stepped portion 45 with inclined sides at a position opposite to the position of the recessed notch 43. Support plate 3
4 includes a click protrusion 46 that the click protrusion 44 rides over, an elastic arm 47 that enters the recessed step 45 of the switch lever 37 so as to be able to move forward and backward, and a sealing means 31
A pressing portion 48 is formed to press the bent portion 14 of the current-carrying metal fitting 12 via the pressing portion 48 . The second housing 7 is screwed onto the first housing 5 with screws 6 after the sealing means 31, support plate 34, and switch lever 37 are attached to the first housing 5. A first joint 49 is provided on the rotating shaft 11 of the motor, and the first joint 4
9 through a spring 50 so as to be able to float up and down.
A joint 51 is provided, and the rotational driving force of the motor 8 is transmitted to the movable blade 56 via a third joint 52 provided on the blade block 2, an eccentric cam 53, and a swinging rod 55 pivotally supported on a support shaft 54. Reciprocating driving force is transmitted. The movable blade 56 is in sliding contact with the fixed blade 57.

Next, the operating state will be explained with reference to FIGS. 7 to 12. 7 to 9 are views of the switch in the off state, and as shown in FIG. 8, the support plate 3 is attached to the recessed step 45 of the switch lever
4 is inserted into the elastic arm 47, and the end 13 of the current-carrying metal fitting 12 is pressed against the motor 8 by the pressing part 48 of the support plate 34.
Since the bent portion 14 of the energizing metal fitting 12 is not pressed until it comes into contact with the switch contact 4a, the switch contact 4a is turned off and the motor 8 is not energized. When the switch handle 40 is rotated in the X direction from this state, the switch lever 37 follows and rotates in the X direction, and the elastic arm 47 of the switch lever 37 is rotated to the support plate 34.
The pressing portion 48 of the support plate 34 presses the bent portion 14 of the current-carrying fitting 12 via the sealing means 31, and the elastic arm 47 presses the bent portion 14 of the recessed step 45 gradually. In the state shown in FIG. 11 where the motor 8 has come out of the
is turned on, and the motor 8 is energized. At this time, the click protrusion 44 of the switch lever 37 rides over the click protrusion 46 of the support plate 34 to provide click performance.

As described above, the electric shaver according to the present invention includes a motor that drives the movable blades, a contact point of a switch that turns on and off the connection between the power source of the motor and the motor, a housing that accommodates the motor, and a housing that is rotatably driven by the motor. a support plate having an annular projection and attached to the housing via the sealing means; a rotation shaft of the motor passing through the support plate;
The present invention is characterized by comprising a switch lever that is rotatably fitted loosely into the outer peripheral body of the protrusion and turns on and off the contacts of the switch via the sealing means, so that the interior of the electric shaver main body is not waterproof. This has the effect of simplifying the structure, and further has the effect that the switch can be made smaller and the electric shaver can be made thinner.

[Brief explanation of the drawing]

The drawings show one embodiment of the electric shaver of the present invention, in which Fig. 1 is an external perspective view, Fig. 2 is a front sectional view, Fig. 3 is a side sectional view, Fig. 4 is an exploded perspective view, and Fig. 4 is an exploded perspective view. Figure 5 is a view of the support plate in the direction of arrow P in Figure 4;
Fig. 6 is a view of the switch lever in Fig. 4 in the direction of arrow Q, Fig. 7 is a cross-sectional view of the electric shaver showing the switch in the OFF state, and Fig. 8 shows the contact state of the contacts of the same switch. FIG. 9 is a side view showing the click of the above switch, FIG. 10 is a cross-sectional view of the electric shaver showing the switch in the on state, and FIG. 11 is a side view showing the contact state of the contacts of the above switch. FIG. 12 is a side view showing the click of the above switch. 1...Housing, 4a...Switch contact,
8...Motor, 11...Motor rotation shaft, 31...
... Sealing means, 34 ... Support plate, 36 ... Protrusion of support plate, 37 ... Switch lever, 40 ...
switch handle.

Claims (1)

[Claims for Utility Model Registration] 1. A motor that drives a movable blade, a contact point of a switch that turns on and off the connection between the power source of the motor and the motor, a housing that accommodates the motor, and a rotation driven by the motor. a sealing means through which a shaft passes; a support plate having an annular protrusion and attached to the housing via the sealing means; a rotating shaft of the motor passing through the support plate; and an outer peripheral body of the protrusion. 1. An electric shaver comprising: a switch lever that is rotatably fitted loosely to turn on and off the contacts of the switch via the sealing means. 2. A utility model characterized in that a switch handle for rotating the switch lever protrudes from the housing, and a contact point of the switch is provided in the housing on the opposite side of the switch handle with respect to the rotation axis of the motor. An electric shaver according to claim 1.