JPH0121654Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to an electric shaver equipped with a comb blade unit that can be retracted and retracted from a main body case.

[Conventional technology]

This type of electric shaver is known, for example, from Japanese Patent Publication No. 58-24147. Where,
A comb blade holder equipped with fixed comb blades and movable comb blades is built in so that the blade part can move forward and backward so that it can move in and out of an opening formed in the head of the main body case, and when in use, it can be pushed out. It is designed to be operated and exited when not in use. and,
In such a structure in which the comb blade holder moves back and forth within the opening, an appropriate left and right clearance must be provided between the left and right side surfaces of the comb blade holder and the left and right inner surfaces of the opening in order to allow the holder to slide smoothly. It is necessary.

[Problem that the invention attempts to solve]

However, if such a left and right clearance exists, when the comb blade unit is used to protrude, the movable comb blade is driven and the comb blade holder vibrates from side to side within the opening, colliding with the inner edge of the opening and generating noise. .

This invention focuses on this fact, and by making simple improvements to the comb blade holder or the opening, it is possible to prevent the vibration and noise of the comb blade holder without interfering with the smooth back and forth movement of the comb blade holder. With the goal.

[Means for solving problems]

In order to achieve the above object, in the present invention, as shown in FIG.
Left and right sides or opening 10 of the comb blade holder 11
A lateral steadying arm 37 that can be elastically deformed in the left and right direction is provided on either the left or right inner side surface 38 of the lateral steadying arm 37.
are brought into elastic contact. The state of elastic contact of the lateral steadying arm 37 with the left and right side surfaces of the comb blade holder 11 or the left and right inner surfaces 38 of the opening 10 is always maintained both when the comb blade holder 11 is in the protruding state and in the retracted state. However, in order to achieve the intended purpose, it is essential that the comb blade holder 11 be in contact at least when it is protruded.

[Effect of idea]

According to the above configuration, even when the movable comb blade 13 is driven with the comb blade holder 11 in the protruding state, the lateral vibration of the comb blade holder 11 is damped and absorbed by the elastic contact of the lateral steadying arm 37. Comb blade holder 1
1 does not rattle from side to side and does not generate noise.

〔Example〕

An embodiment of the present invention will be described below, taking as an example an electric razor mainly used for shaving unwanted hair of women.

In FIG. 2, a main body case 1 of this electric shaver has two AA batteries 2 and a motor 3 built in, and a dome-shaped mesh outer blade 5 on the top.
is supported via the holder 4, and there are 3 inside the outer cutter 5.
The inner cutters 6 are attached to a motor rotating shaft 8 via a holder 7, and the upper part of the main body case 1 further includes a comb blade unit 9 that can be freely extended and retracted.

The main body case 1 includes a case body 1a having an oval cross section that allows the battery 2 to be taken in and taken out from below, and a motor support case 1b fixed to the body 1a with screws so as to close the upper surface of the hemispherical upper opening of the body 1a. , a dish-shaped hair receiving case 1c is placed above this and screwed to the motor support case 1b, and the outer blade holder 4 is removably screwed into the hair receiving case 1c. A motor rotation shaft 8 is provided protruding from the center of 1c. The bottom opening of the case body 1a is closed with two inner and outer bottom covers 1d and 1e.

The comb blade unit 9 is housed in a space between the motor support case 1b and the hair receiving case 1c,
The hair can be moved in and out through an opening 10 formed on the front surface of the hair receiving case 1c.

In FIG. 5, the comb blade unit 9 includes a comb blade holder 11 that is linearly movable back and forth within an opening 10, and a fixed comb blade 1 mounted on the front end of the comb blade holder 11.
2, a movable comb blade 13 guided and supported so as to be movable left and right, and a central projection 13a of the movable comb blade 13;
The comb blade holder 11 moves back and forth in the same manner as time.

One end of a swinging arm 15 is fitted to the upper surface of the motor support case 1b on which the comb blade unit 9 is mounted, so as to be able to swing freely via a fulcrum boss 16. A pin 18 is provided in the elongated hole 17 and protrudes from the lower surface of the rear end of the comb blade holder 11.
is engaged. Further, an operating pin 21 protruding from an arcuate long hole 20 near the outer periphery of the motor support case 1b is engaged with a hole 19 provided at the other end of the swing arm 15. As shown in FIGS. 3 to 6, the operating pin 21 is connected to an arc-shaped comb blade unit ejection/extension operating member 22 that is slidably supported in the circumferential direction along the inner peripheral surface of the upper end of the case body 1a. A knob 23 provided on the outer surface of the operating member 22 protrudes from an opening 24 formed along the outer periphery of the case body 1a, and by sliding the knob 23 in the circumferential direction. The swing arm 15
can be moved back and forth. Therefore, when the knob 23 is operated clockwise to the stroke end as shown in FIG. 1, the comb blade unit 9 protrudes, and when the knob 23 is operated counterclockwise to the stroke end as shown in FIG. Unit 9 is moved out and stored. In order to maximize the forward and backward movement stroke of the comb blade unit 9 with a constant swing stroke of the swing arm 15, the elongated hole 17 is
The end 17a on the swinging base end side is the swinging arm 15.
It is formed in an inclined shape that deviates in the forward movement direction S. Further, due to a deviation between the movement locus of the knob 23 along the outer circumference of the case body 1a and the movement locus centered on the fulcrum boss 16 at the tip of the swing arm 15, strain occurs between the knob 23 and the swing arm 15. The hole 15a that fits into the fulcrum boss 16 on the proximal end side of the swing arm 15 is formed into a long hole so that the swing arm 15 operates smoothly.

In FIGS. 3 to 6, a detent arm 25 is connected in a cantilevered manner from the extension/retraction operation member 22 of the comb blade housing 9, and a tip protrusion of the detent arm 25 is provided inside the motor support case 1b. Protrusions 26, 26 that cross over and engage with 25a
is provided, and the operating member 22 is positioned and held at the stroke end by elastic engagement between the detent arm 25 and the projection 26.

In FIGS. 5 to 8, the comb blade drive piece 1
4, a wide hole 27 and a narrow hole 28 are continuously formed in the front and back, and thin support arms 29, 29 extend rearward from the left and right portions of the front end. shaped tip 29a,
29a are fitted and fixed into holes 30, 30 formed at the left and right rear portions of the comb blade holder 11. At the center of the front end of the driving piece 14, a bifurcated engaging portion 14a that acts on the central protruding piece 13a of the movable comb blade 13 is provided.

The wide hole 27 is wider than the outer peripheral rotation locus of the eccentric cam 31 attached to the motor rotation shaft 8, and the narrow hole 28
are set to have the same width as the outer diameter of the eccentric cam 31, and when the comb blade holder 11 is retracted, the eccentric cam 31 is located in the wide hole 27 as shown in FIG. The drive piece 14 is kept in a disengaged state. In addition, when the comb blade holder 11 is in a protruding state, as shown in FIG.
4 are in an engaged state, and as the eccentric cam 31 rotates, the drive piece 14 reciprocates left and right to drive the movable comb blade 13.

In FIGS. 5 and 8, the comb blade holder 1
A pair of elastic arms 32, 32 are cut in a horizontal cantilever shape on the left and right sides of the front side of the comb blade holder 1, and the upper surface of the free end thereof is slightly lower than the upper surface of the comb blade holder 11 in the free state. A protruding circular contact portion 32a is provided, and the contact portion 3
Small protrusions 33, 33 are provided on the upper surface of the drive piece 14 directly above the arm 2a.
2, the small protrusions 33, 33 of the drive piece 14 are brought into point contact with the wall surface 34 on the bottom side of the hair receiving case 1c. Not only does it prevent rattling, but it also reduces sliding resistance when moving from side to side.

In FIGS. 1 and 7, the comb blade holder 1
Cantilever-shaped lateral steady-stop arms 37, 37, which are elastically deformable in the left-right direction, are arranged rearwardly on both left and right side surfaces of the front portion of the vehicle. When the comb blade unit 9 is in the protruding state, as shown in FIG. To restrict rattling of the comb blade holder 11 from side to side. There is a small protrusion 3 at the tip of the lateral steady arm 37.
7a protrudingly provided on the left and right inner surfaces 3 of the opening 10.
8, it is possible to reduce the sliding resistance when the comb blade holder 11 moves back and forth. However, the lateral steadying arms 37 may be provided on the left and right inner side surfaces 38 of the opening 10, contrary to the illustrated example.

In addition, a switch 39 that controls the operation of the motor 3
is fixed to the upper part of the case body 1a via a bracket 40 and a switch mounting plate 41,
The operation part 39a of the switch 39 is connected to the switch lever 4.
It is connected to a push button 44 provided on the rear surface of the case via a downwardly extending portion 43 of No. 2. The switch 39 is turned on and off by a push button operation.

[Brief explanation of the drawing]

The drawings show one embodiment of the electric shaver according to the present invention, in which Fig. 1 is a plan view of the main part of the comb blade unit in a protruding state, Fig. 2 is a longitudinal side view of the whole, and Fig. 3 is a side view of the other whole. , Figure 4 shows A in Figure 2.
5 is an exploded perspective view of the retracting structure of the comb blade unit, FIG. 6 is a perspective view of its ejecting and retracting operation member, and FIG. 7 is a plan view of essential parts of the comb blade unit in the retracted state. FIG. 8 is a sectional view taken along the line BB in FIG. 1. 1... Main body case, 9... Comb blade unit, 1
0... Opening, 11... Comb blade holder, 12...
Fixed comb blade, 13...movable comb blade, 37...lateral steadying arm.

Claims (1)

[Scope of utility model registration request] A comb blade holder 11 having a fixed comb blade 12 and a movable comb blade 13 is installed in an opening 10 formed in the main body case 1 so that the blade part moves in and out of the opening 10 by moving back and forth. In the electric shaver, the left and right side surfaces of the comb blade holder 11 or the opening 1 are located between the sliding surfaces of the left and right side surfaces of the comb blade holder 11 and the left and right inner surfaces 38 of the opening 10.
A lateral steadying arm 37 that is elastically deformable in the left and right direction is provided on either the left or right inner side surface 38 of the blade 0, and the lateral steadying arm 37 is provided with respect to the other side at least when the comb blade holder 11 is in the protruding state. , an electric razor characterized in that it comes into elastic contact.