JPS6026A - Small-sized electric device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to small electric appliances such as electric shavers, and relates to the structure of an operation switch device thereof.

(Example) Conventional technology For example, in the case of an electric razor, the operating switch is provided with an operating heir slidably disposed in the main body case, and a printed circuit board with a pattern foil for the switch formed inside the main body case facing the operating heir. ! - The board is housed and arranged, and an elastic contact piece that slides on the printed circuit board with an appropriate elastic pressure contact force is provided on the operating heir. However, in the second slide switch device, the distance between the operating knob and the printed circuit board is maintained by the elastic force of the elastic contact piece.
After long-term use, the elastic force of the contact piece decreases and the contact pressure with the printed circuit board decreases, causing malfunction of the switch, and dust and the like easily enter through the knob attachment part.

In the case of a push-button type switch, the amount by which the push button is pushed into the main body case is determined by the outward protrusion of the push button from the main body case.
In most cases, the push-up movement toward the direction (= 1 force) is restricted by a flower or an elastic switch contact piece, and depending on the attenuation of the elastic force, there is a risk that it may cause malfunction of the switch, similar to the slide switch described in M. There is.

(c) Purpose of the Invention The present invention has been made in view of the problems of the prior art as described above.It is relatively easy to control the dimensions of the contact part and the board on the switch part side, and it can be used for a long period of time. It is an object of the present invention to provide a switch device for small electric equipment that is effective also in terms of durability.

(d) Structure of the Invention An operation plate is provided on the outer surface of the main case housing the electric load so as to be able to see-saw, and the operation plate is disposed inside the case opposite to the operation plate through a through hole provided in the main case. A switch component that controls on/off energization of the electric load by the transmission force due to the no-saw motion of the operation plate, and a swing range of the operation plate is regulated by a main body woofer to control the switch component. This configuration controls the pressing force and also prevents dirt and dust in the atmosphere from entering the inside of the main body case through the operation plate handle.

(e) Examples Hereinafter, examples in which the present invention is applied to an electric shaver will be described with reference to the drawings.

Figure 1 is a front view of a reciprocating electric shaver.

(1> is a main body case made of synthetic resin, which houses an electrical load (not shown) inside, and an outer cutter frame (2) made of aluminum cast is removably placed and engaged on the upper part. 2)
A nickel electroformed outer blade (4) is detachably attached to the upper opening (3) from below.

(5) is an operation panel that is pivotally housed in a rectangular recess (6) formed on the front surface of the main body case (1), and the center line (7) shown by the dashed line in the figure can be moved by the means described later. It is said that seesaw movement is possible as the axis of rotation.

FIG. 2 is a cross-sectional view taken along the center line (7) of FIG. 1.

(8) (8) is a pivot protrusion formed protrudingly at the center of both sides of the operation plate (5), and the pivot recess extends from the center of the side wall of one of the recesses (6) to its bottom wall. (9) (9) is formed, and the pivot protrusion (8)<8) is formed in the pivot recess (9).
It is supported by (9).

(10a) (lob) is a protrusion formed on the back surface of the operating body (5) at a position symmetrical with respect to the center line (7), and is bored at a corresponding position on the bottom wall of the recess (6). Through the provided through holes (lla) (llb), the main body case (1)
It is made to protrude to the inside of the.

12) has the recess (6) inside the main body case <1).
) is a printed circuit board provided facing the inner surface of the Jm wall of the Jm wall, and as shown in FIG. )
A patterned foil is formed on the surface.

(15) is a locking play with a locking pin <16> (16)! - A switch contact piece (17) that is attached to the surface of the printed circuit board (12), and the foil engagement hole (1
8) (18) is a circular hole (19) provided in the substrate (12)
(19), the bottle (16) (16) passes through both holes (18, '+ (18), <19) (19) and the head is welded!; Arch-shaped contact portions (20a) (20b) are formed on both sides of the switch contact piece (152 is a fixed engagement hole <19) (19,), and the contact portions (20a) (20b) On the back surface of the top of the arch, the contact pattern portion (13 bar 13), (
14) The respective ends (13a) (13b) of (14), (
14a>(14b), and the end (13aH13b
), (14a) and (14b), the contact (21
a) (21b>) are provided protrudingly.Also, both longitudinal ends (15aH15b) of the switch contact piece (15) are always attached to the board (11) with the contact piece (15) attached to the board (11). It is in pressure contact with (11).

Figures 4 (a) and (b) are the fV-IV of the second section, respectively;
It is a sectional view taken along IV'-IV'. The sewage invention will be described in detail with reference to this drawing. When the E section is pressed in the P direction on the operation plate (5), the upper end of the operation plate (5) rotates around the pivot protrusion <8) <8) until the upper end of the operation plate (5) comes into contact with the recess (6> bottom wall). It rotates in the direction of arrow P' as the center of movement, and the control rod plate (5) described in ^11
Since the upper protrusion (10a) also moves in the P direction, the contact portion (20a) comes into contact with the protrusion (10a) and dents toward the substrate (11), and the contact portion (21a) (21a)
) contacts the ends (13a) (13b) of the butter 7 parts (13) (13) of the substrate (11) so that both ends <13a)<
13b) to operate the drive mechanism (not shown) inside the main body case (1).

On the other hand, when the lower part of the operation plate (5) No. 111 is pressed in the direction of arrow Q, the operation plate (5) rotates in the direction of arrow Q until its lower end comes into contact with the bottom wall of the recess (6), and the other side protrusion (10
b) comes into contact with the external force contact part (20b) and then the contact part (20b)
0b) is elastically deformed and the contacts (21b) (21b) are attached to the ends (14a) (14b) of the pattern parts (14) (14).
The two ends (14a and 14b) are brought into contact with the ring, and the drive mechanism is suspended.

Note that normally the operation plate (5) is the switch contact piece (15).
1 by the contact portions (20a) (20b). The upper and lower sides are equally biased and kept parallel to the main body case (1).
/) Ru.

Effects of the Invention As described above, the present invention comprises an operation panel which is arranged so as to be movable on the outer surface of the main body case in which the electric load is housed;
A switch is disposed inside the case facing the operation plate, and is transmitted through a through hole provided in the main case and by the force transmitted by the see-saw movement of the operation plate. The upper limit of the pressing force applied to the switch component housed inside the main body case is that the end of the operation panel hits the main body case during seesaw movement and is prevented from further rotation. This allows the switch component to continue to operate effectively as a switch for a long time.In addition, the main body case only has a through hole that connects the switch component and the operation panel, which is different from the conventional Unlike the switch structure, there is no large opening in the main body case through which the operating members can be moved, and this can be expected to have the effect of making it difficult for dirt and dust in the atmosphere to enter the main body case.

[Brief explanation of drawings]

Fig. 1 is a front view of an electric shaver according to one embodiment of the present invention;
The figure is a cross-sectional view of the main part taken along the center line (7), Fig. 3 is a top view of the main part of the burr cutting board, and Fig. 4 (A) and (mouth) are the 2nd
5 is an exploded perspective view of the main parts. (1>...Body case, (6)...Recess, (5)-
...Operation board, (lia) (ob)...Through hole, (10a
)(10b)-Protrusion, (12)(13)(14)(15)... Switch/C component. 1 Figure 2 (a) c)

Claims (3)

[Claims] (1) An operation plate provided on the outer surface of the main body case housing the electric load so as to allow seesaw movement, and an operation plate disposed inside the case opposite to the operation plate, through a through hole provided in the main body case. A nozzle-shaped electrical device comprising: a switch component that controls on/off the energization of the electrical load by means of a transmission force caused by the saw-and-saw movement of the operation panel. (2) The switch component includes a printed circuit board disposed inside the main body case facing the recess and having pattern foils arranged in parallel on its surface, and a printed circuit board that is fixed to the printed circuit board and is elastic when the operation plate seesaws. A small electric device according to claim 1, comprising a switch contact piece having a contact portion that is deformed and comes into contact with the pattern foil i1j. (3) The pattern foil of the printed circuit board constitutes two pairs of contact pattern parts for on-contact and off-contact, and the switch contact piece has a central part fixed to the board and opposite sides thereof to the contact pattern part. A small electric device as set forth in the patent, characterized in that a contact portion is provided facing the operator, and each contact portion selectively contacts the contact pattern portion during the seven-saw movement of the operation plate.