JPH0439622Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a switch device used to drive appliances such as electric shavers, and is directly involved in opening and closing the operating knob and switch contacts that make up the switch device. This invention relates to a connection mechanism between contact members.

(b) Prior art For example, Japanese Utility Model Publication No. 57-19791 discloses a switch board, an operating piece that is movable in parallel with the switch board facing the switch board and has a mounting portion, and this operating piece. A switch is disclosed which includes a switch contact piece whose intermediate portion is supported in a mounting portion thereof so as to be able to see-saw with respect to the operating piece, and which has contact portions at both ends that are slid into contact with the switch board. In this way, in conventional switch devices, if the operating knob slides up and down, its contact portion either moves in the same direction or moves in a direction perpendicular to the sliding surface of the operating knob. On the other hand, especially when used in waterproof equipment, it lacks reliability in terms of waterproof performance, and requires sufficient machining accuracy for each part that provides the switch device, resulting in a high rate of defective products. There was a problem with that.

(c) Problems to be solved by the invention The problems to be solved by the invention are to improve the waterproofness of the switch member and improve its quality by varying the moving direction of the operating knob and the moving direction of the contact member. The objective is to improve the quality of the parts and to stabilize the processing of parts.

(d) Measures to solve the problem The switch operation knob that is slidably provided on the front surface of the switch mounting board attached to the surface of the equipment case, and the protrusion formed on the inner surface of the switch operation knob. An interlocking member having a matching notch and rotatably supported through a waterproof packing in a pivot hole drilled in the device case, and a switch contact on a printed circuit board by rotation of the interlocking member. and a contact member having a contact portion that makes contact with or separates from the contact member.

(e) Function The interlocking member rotates around the pivot hole by the linear movement of the switch operation knob, and the contact member rotates due to the rotation of the interlocking member, and the contact points on the printed circuit board and the contact point The switch contact opens and closes depending on the relationship between the member and the contact portion.

(F) Embodiments Hereinafter, embodiments in which the switch device of the present invention is applied to a waterproof electric shaver will be described in detail with reference to the drawings.

FIG. 5 shows a front view of the reciprocating electric shaver.
In the figure, reference numeral 1 denotes a main body case made of synthetic resin, and a motor (not shown) housed in the case is placed on the front of the case at a stop position where it slides and stops along one surface of the outer surface of the case 1, and a drive position where it is driven. A switch operation knob 2 that stops at two operating positions, and a switch operation knob 2 that is arranged on the outer surface of the housing alongside the switch operation knob 2 and located close to the switch operation knob 2 on an extension line in the sliding direction of the switch operation knob 2. An open position in which the trimmer blade block 3, which is slidably attached to the upper part of the main body case 1 and is rotatably raised, projects out of the main body case 1, and the trimmer blade block 3
It is equipped with a trimmer operating handle 4 that stops at two operating positions: a closed position where the trimmer can be retracted and a closed position where the trimmer can be retracted. Reference numeral 5 denotes an aluminum die-cast outer cutter frame that is removably placed and engaged on the upper part of the main body case 1, and the outer cutter (not shown) can be removed from a number of nickel electroformed hair introduction holes. is attached to. Further, a decorative plate 6 is attached next to the switch operation knob 2.

Next, the switch device will be explained with reference to FIGS. 1 to 3. In these figures, 7a and 7b are locking leg pieces 9a, 7b formed parallel to each other on the switch mounting board 8 attached to the front surface of the main body case 1, and hanging from both sides of the inner surface of the switch operation knob 2. 9b is a guiding long hole, 10 is one long hole 7
a guide hole 12 formed in the middle of b for guiding the protrusion 11 formed on the inner surface of the switch operation knob 2;
13 is a pivot hole drilled in the main body case 1; 13 is an interlocking member rotatably supported in the pivot hole 12 via a waterproof packing 14; 15 is an interlocking member disposed inside the main body case 1. , diamond-shaped switch contact 1
A printed circuit board 17 is rotatably mounted through a through hole 18 provided in the center of the switch contact 16 of the printed circuit board 15, and has a contact portion 19 that comes into contact with or separates from the switch contact 16.
A contact member having:

The interlocking member 13 has its body portion 13a inserted into the pivot hole 12 of the main body case 1 to serve as a rotation axis, and its upper plate portion 13b has a notch that engages with the protrusion 11 of the switch operation knob 2. 20 is formed.

The contact member 17 has a fitting part 17a having a rectangular parallelepiped head and is fitted into a fitting hole 13c formed in the body part 13a of the interlocking member 13, and the switch contact is provided on the inner surface of the disc part 17b. A contact portion 19 made of a conductive metal that comes into contact with and separates from the contact portion 16 is fixedly attached, and its mounting leg portion 17c is fitted into the through hole 18.

The packing 14 is made of rubber or the like, and is coated with silicone grease or the like, and is attached to the main body case 1.
It is housed in the stepped groove 12a of the pivot hole 12 and is fixed by the upper plate 13b of the interlocking member 13 to prevent it from coming off.

In the switch device constructed as described above, when the switch operation knob 2 is moved up and down, the protrusion 11 moves up and down, so that the interlocking member 13, whose notch 20 is engaged with the protrusion 11, rotates about its body 13a. (See Figure 4). Therefore, the contact member 17 whose fitting portion 17a is fitted into the fitting hole 13c of the body portion 13a rotates about its mounting leg portion 17c in correspondence with the interlocking member 13, and the contact portion 19 is brought into contact with or separated from the switch contact 16 on the printed circuit board 15.

(G) Effects of the invention As explained above, the present invention includes a switch operation knob that is slidably provided on the front surface of a switch mounting board that is attached to the surface of an equipment case, and a switch operation knob that is formed on the inner surface of the switch operation knob. an interlocking member that has a notch that engages with the protrusion and is rotatably supported through a waterproof packing in a pivot hole drilled in the device case; By constructing a contact member having a contact part that comes into contact with or separates from the switch contact, it is possible to combine a slide switch with good operability and a rotary switch that is easy to apply waterproofing by taking advantage of their advantages. This has the effect of improving waterproof performance and stabilizing the quality of the switch section.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing the configuration of the switch device of the present invention, Fig. 2 is an enlarged view of the main parts of Fig. 1, Fig. 3 is an exploded perspective view of each component, and Fig. 4 is an interlocking member and a contact member. FIG. 5 is a front view of a reciprocating electric shaver to which the switch device of FIGS. 1 to 4 is applied. 1... Case, 8... Switch mounting board, 2...
... Switch operation knob, 20 ... Notch, 12 ... Pivot hole, 14 ... Waterproof packing, 13 ... Interlocking member, 15 ... Printed circuit board, 16 ... Switch contact, 19 ... Contact part, 17 ... Contact member.

Claims (1)

[Scope of utility model registration request] A switch operation knob that is slidably provided on the front surface of a switch mounting board attached to the surface of the equipment case, and a notch that engages with a protrusion formed on the inner cotton side of the switch operation knob, and is attached to the equipment case. A contact having an interlocking member rotatably supported in a drilled pivot hole via waterproof packing, and a contact portion that comes into contact with or separates from a switch contact on a printed circuit board as the interlocking member rotates. A switch device consisting of parts.