JPS6044924A - Locking unit of switch - 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 a lock back tα of a switch suitable for use in razors.

{mouth} Prior Art Generally, electric razors are equipped with a Ronoku KDM to prevent them from being turned on while being carried around in a bag or the like.

However, since ordinary Ronoku clothing mechanically locks the operating panel of the switch, the structure of the present invention is simple. By interposing a lock plate between the movable contact and the fixed contact Ij of the switch, the wooden plan prevents the movable contact from coming into contact with the fixed contact, and the drive mechanism can be activated silently and when necessary. It is ensured that the system does not operate.

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

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

(1) is the main case made of synthetic resin, and there are no pictures inside.
It accommodates a solid electric load, and an aluminum die-cast outer cutter frame (2) is removably placed and engaged on the upper part.
A nickel electroformed outer blade (4) is removably attached to the upper opening (3) of 2) from below.

(5) is an operation plate that is pivotally housed in a rectangular recess (6) formed on the front surface of the main body case (1) of No. 1111, and is connected to the center line (7) indicated by a chain line in the figure by means described later. It is said that seesaw movement is possible using the axis of rotation.

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

+81 fi+ is a pivot protrusion formed protrudingly formed at the center of both sides of the operation plate (5), and extends from the center of the two mutually opposing side walls of the recess (6) to the bottom wall thereof. It is pivotally supported in a pivot recess f9++91 formed across.

(10a) (1ot)) is a protrusion formed on the back surface of the operation plate +51 at a position symmetrical to the center line (71), and at a corresponding position on the bottom wall of the recess (6) marked in 11. The main case (1) is protruded into the interior of the main body case (1) through a through hole (lla) (11b) formed in the main body case (1).

(12) is a pudding M plate provided inside the oIJ book bowl body case) facing the inner surface of the bottom wall of the recess (6), and is arranged parallel to each other as shown in Fig. 5. Two pairs of contact pattern parts (13) (131, +14) (
A pattern foil constituting 141 is formed on one surface.

051 C. An elastic conductive plate whose center is attached to the surface of the pre-printed board 21,
The center fixing hole (181 (181) matches the oval hole (lω0(g)) provided in the substrate O2, and
1 is the one that penetrates both the body (181 fl) and the head (181 fl) and dissolves the head. Further, the elastic conductive plate (15)
An arch-shaped part (20aH20b) is formed on both sides of the right hole (191 (1(g)), and movable contacts (21a, ) (21b) are protruded from the back surface of the top of the arch. The movable contacts (21a) (21b) have arch-shaped parts (2oa) (2ob) that are connected to the protrusions (21b) of the operation plate (5).
10a) (10b) and is elastically deformed, the fixed contacts (13a) (13b), (i4a) (1
Fixed contact (13a) (13+,) in contact with 4'b')
), (14a) and (1, 1b) are electrically connected. In addition, both ends (+5a
)(15't)) is in pressure contact with the substrate (111) during normal blowing.

Figure 4 L (1, f01 Ha Husband/rMil Figure 2 (1'1
-1v, ff'-IV'lif and face. The present invention will be described in detail with reference to this drawing. MiJ operation board (5
) in the P direction, the pivot protrusion (81
+81 as the center of rotation in the direction of arrow P', and the projection (10a) on the upper part of the operation plate (5) moves in the same <13' direction, so the arch-shaped portion (2i1Q,) (10a), the concave portion is pushed toward the substrate O2 side, and the ``
T The movable contacts (21a) (21a) contact the fixed contacts (]3a) (13b) of the substrate O2 and the fixed contacts (1)
3a) (13'l)) to operate the not-illustrated drive units A, '' and V 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 the arrow q, the operation plate (5) rotates in the direction of the arrow Q' until its lower end comes into contact with the bottom wall of the recess (6), The other protrusion (]
Ob) presses the arch-shaped part (addition b) of 1vi to make it elastically deformed, and brings the movable contacts (21b) (21b) into contact with the fixed contacts (141i) (141)), and the two fixed contacts (14a) (14b) The drive mechanism section is stopped by making the drive mechanism conductive.

Note that normally the operation plate (5) is connected to the elastic ring city plate (1).
The upper and lower sides are equally biased by the arch-shaped portion (20aH(a)b) of ω, and are kept parallel to the main case (1).

■ is a lock plate made of an insulator, and the printed circuit board O2
It is slidably attached to a long hole (231) drilled parallel to the elastic isoelectric plate (+5), and the slide heir 241 protrudes outside the main case (1).This lock plate □
The tip (2)' of □□ is connected to the printed circuit board oz and the elastic MJ.
When the slide heir (241) is moved upward, the tip (2z') of the insulating mouth plate is inserted between the movable contact (21a) (
21a) and the fixed contacts (13a) (131)).

Therefore, even if the arch-shaped portions (21) a, ) of the elastic conductive plate are pressed by the operation plate (5), the movable contacts (21a) (21
A) contacts the fixed contacts (13a) and (13b), so no energizing circuit is formed and the drive mechanism does not move. When the slide heir (241) is moved downward, the lock plate (221 moves downward I between the elastic contact plate 0ω and the printed circuit board o21, and its tip f221' is 1) moving contacts (21a) (21a) and fixed contact (1ali, )
(13b), the movable contact (21aH21a) comes into contact with the fixed contact (13+i, ) (13b) by pushing the operation plate (5), and energizes the drive mechanism section. Note that Q5+251 is an elastic piece formed integrally with the lock plate @, and when the lock plate is moved up and down, this elastic piece engages with a pin on the main body side (not shown), and the present invention of the lock plate mechanically controls the operation plate. Instead of locking, it is only necessary to insert an insulating lock plate between the movable contact and the fixed contact, so the locking mechanism is very convenient! There is only one unit, making it easy to assemble. Furthermore, if the tip of the lock plate interposed between the movable contact and the fixed contact is moved between the printed circuit board and the elastic conductive plate along the elastic conductive plate, it can be moved in the orthogonal direction as shown in FIG. Unlike when the lock plate is moved, the locking operation is performed reliably without the tip of the lock plate hitting the side edge (15) of the elastic floor plate and preventing the movement.

[Brief explanation of drawings]

Fig. 1 shows the iE aspect of the invention's popular razor, Fig. 2 is a cross-sectional view taken along the center line (7) in Fig. 1, No. 51 is a plan view of the main part of the printed circuit board, and Fig. Figures 4 (a) and (b) are section views of IV-IV and ff'-IV in Figure 2, respectively, Figure 5 is an exploded slope view of the main parts, and Figure 6 is a diagram showing the openings and lines shown in the embodiment section. FIG. +51-...Operation board, (21a) -'iT moving contact, N+a,) Dab)... Fixed contact, C-lock plate, O2... Printed circuit board, (2flla)... Arch-shaped part ,05)...Elastic conductive plate. Figure 2 Figure 3 (a) (b)

Claims (1)

[Claims] (1) In a device that forms a current-carrying circuit by temporarily pushing a movable contact and bringing the movable contact into contact with an identified contact, there is no insulation between the movable contact and the fixed contact when the movable contact is pressed. A locking device for a switch, characterized in that a locking plate is interposed. {2} The fixed contact is provided on the printed circuit board, and I1
The movable contact is formed on a part of an elastic conductive plate having a γ-arch shape mounted on the printed circuit board, and the lock plate is slidably mounted on the printed circuit board 1. 2. The locking arrangement of the switch according to claim 1, wherein: the printed base ≦.