JPH0317829Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an electric shaver that has an improved method of attaching a hair retaining rubber plate that prevents hair debris from entering the main body case.

[Conventional technology]

Conventionally, there is an electric shaver of this type as shown in FIG. 5 (for example, Japanese Utility Model Publication No. 14781/1981). In this case, an opening 2a is formed in the center of the lint receiving upper wall 2 of the main body case 1, and the inner blade 3 and the inner blade holding member 5 are attached to the upper end of the drive rod 4 that protrudes upward from the central opening 2a. Support through. The gap formed between the drive rod 4 and the periphery of the central opening 2a is covered with a hair stopper rubber plate 17 to prevent hair from entering the main body case 1 from there. The bristling rubber plate 17 elastically expands the peripheral edge 25 of the central opening to fit into the annular engagement groove 26 at the lower end of the inner blade holding member 5, and the outer peripheral edge 27 of the bristling rubber plate 17 The hair retaining rubber plate 17 is engaged with and fixed to an annular protrusion 28 protruding from the periphery of the central opening 2a of the hair receiving upper wall 2, and the gap between the drive rod 4 and the periphery of the central opening 2a is closed. It has a shape that covers the inner blade push-up spring 20.

[Problem that the invention attempts to solve]

According to this conventional device, since the inner blade push-up spring 20 is covered by the hair retaining rubber plate 17, the hair does not get caught on the spring 20, which is advantageous in terms of cleaning the hair. There is some difficulty in attaching the hair retaining rubber plate 17 to the inner blade holding member 5. That is, the bristling rubber plate 17 elastically fits into the annular engagement groove 26 of the inner cutter holding member 5 while expanding the peripheral edge 25 of the central opening against this elastic force. The installation was troublesome, and the rubber plate 17 was easily torn, especially when the rubber plate 17 was pushed out.

This idea was made in order to eliminate the above-mentioned conventional drawbacks, and by making use of the inner blade push-up spring to attach the hair retaining rubber plate to the inner blade holding member. To facilitate cleaning and to easily attach a hair retaining rubber plate without fear of tearing it.

[Means for solving problems]

In order to achieve the above object, in the present invention, as shown in FIG.
The inner blade holding member 5 is vertically movably inserted into the drive rod 4 protruding from the central opening 2a of the drive rod, and the drive rod insertion hole 18 of the locking rubber plate 17 having a drive rod insertion hole 18 in the center is inserted into the drive rod. 4, and the outer peripheral edge 17a of the bristling rubber plate 17 is engaged and fixed to the periphery of the central opening 2a, and the bristling rubber plate on the drive rod 4 is inserted into the lower side of the inner blade holding member 5 on the driving rod 4. It is assumed that the electric shaver is equipped with a spring 20 that always pushes up and biases the inner cutter holding member 5 below the inner cutter holding member 17.

After that, drive rod insertion hole 1 of hair stopper rubber plate 17
An inward flange 19 is formed on the periphery of the inner cutter 8, and the inward flange 19 is attached to the receiving part 5 provided on the inner cutter holding member 5.
b and the upper end of the inner blade push-up spring 20.

Further, a wall 22 is provided protruding from around the central opening 2a on the upper surface of the hair receiving upper wall 2, and this wall 22 surrounds the outer periphery of the outer peripheral edge 17a of the hair retaining rubber plate 17.

[Effect]

The inner blade push-up spring 20 inserted into the drive rod 4 always performs its original function of pushing up the inner blade holding member 5 from below the inward flange 19 of the bristling rubber plate 17.

The hair retaining rubber plate 17 covers the upper part of the central opening 2a of the hair waste receiving upper wall 2, and from here the hair waste is removed from the main body case 1.
It has the original function of preventing hair from entering the inside of the blade, and also functions to cover the inner blade push-up spring 20 to prevent hair from adhering to this spring 20. Furthermore, at the time of assembly, the inner blade push-up spring 20 is inserted into the drive rod 4, and the hair stopper rubber plate 17 is inserted, and the outer peripheral edge 17a of the hair stopper rubber plate 17 is inserted.
is fixed, but in the temporarily assembled state where the inner cutter holding member 5 is not yet inserted, the bristling rubber plate 17 also functions to prevent the inner cutter push-up spring 20 from slipping out from the drive rod 4.

The wall 22 serves to prevent the cleaning brush from hitting the outer peripheral edge 17a of the hair retaining rubber plate 17 when cleaning the upper surface of the hair dust receiving upper wall 2 with the cleaning brush.

[Effect of idea]

According to the present invention configured as described above, the inner blade push-up spring 20 is covered with the hair retaining rubber plate 17 so that it is not exposed on the surface of the hair waste receiving upper wall 2, so that it can be removed when cleaning hair waste. The spring 20 does not become an obstacle and can be easily cleaned. Moreover, the inward flange 19 of the hair stopper rubber plate 17
The receiving part 5b of the inner blade holding member 5 and the inner blade push-up spring 20
Since the spring 20 is to be clamped between the upper end and the upper end, when assembling the spring 20, the spring 20 is mounted on the driving rod 4, and then the driving rod insertion hole 18 in the center of the hair stopper rubber plate 17 is inserted into the driving rod 4. It is sufficient to insert the blade holding members 5 one after another, and the attachment can be performed simply and quickly without fear of breaking the hair retaining rubber plate 17, thereby improving the ease of assembly.

Further, after inserting the inner blade push-up spring 20 and the bristling rubber plate 17 into the drive rod 4, and before inserting the inner cutter holding member 5, the inner blade push-up spring 20
Since the driving rod 4 is covered by the hair retaining rubber plate 17, the inner blade push-up spring 20, which is easily dropped and lost during assembly, will not come off the driving rod 4 and fall. Adhesive properties can be further improved. In addition, a central opening 2 on the top surface of the lint receiving upper wall 2 is provided.
A wall 22 is provided protruding from the periphery, and this wall 22 surrounds the outer peripheral edge 17a of the hair retaining rubber plate 17, so that the outer peripheral edge 17a is prevented from being turned up from the central opening 2a by the hair cleaning brush. This can be prevented and the fixed state of the outer peripheral edge portion 17a can be maintained for a long period of time, resulting in excellent durability.

〔Example〕

Hereinafter, one embodiment of the electric shaver according to the present invention will be described based on the drawings. A vibrating inner cutter 3 that can freely slide on the inner surface of a mesh-like outer cutter M is provided above the lint receiving upper wall 2 of the main body case 1. Inner blade 3
is supported via an inner cutter holding member 5 on a drive rod 4 projecting upward from a central opening 2a of the upper wall 2 of the lint receiver so that it can move up and down by a predetermined stroke. The inner blade holding member 5 has a cylindrical portion 5a integrally projecting downward,
This cylindrical portion 5a is inserted into the drive rod 4 so as to be vertically movable and rotatable.

The driving rod 4 is integrally provided to protrude from the center of the upper surface of the vibrator 6, which is suspended inside and below the hair receiving upper wall 2 of the main body case 1. The entire vibrator 6 is a plastic molded product, and the vibrator main body 7 having the drive rod 4 has thin-walled parts 8,
8 are integrally formed, and fixed side ends 9, 9 of the left and right thin-walled portions 8, 8 are engaged and fixed in engagement recesses 10, 10 provided on the inner surface of the lint receiving upper wall 2. .

A motor 11 and two rechargeable batteries 12 are arranged below the vibrator 6 in the main body case 1. An eccentric cam 14 is fixed to the output shaft 13 protruding from the upper surface of the motor 11, and a pin 15 protruding from the eccentric cam 14 is engaged with a groove 16 formed in the lower surface of the vibrator body 7 in the front-rear direction. Therefore, the motor 11 rotates, and this rotation is transmitted to the vibrator 6 via the eccentric cam 14, so that the vibrator 6
The inner cutter 3 reciprocates in the left-right direction through elastic deformation, causing the inner cutter 3 to reciprocate in that direction.

The gap formed between the periphery of the central opening 2a and the drive rod 4 on the hair-receiving upper wall 2 of the main body case 1 is covered with a hair-stopping rubber plate 17, from which the hair waste is drawn into the main body case 1. prevent it from invading.

The hair stopper rubber plate 17 has a generally hat-shaped cross-sectional shape, and has a driving rod insertion hole 18 at its center, and an inward flange 19 extending toward the center of the hole at the periphery of the driving rod insertion hole 18. It forms. This locking rubber plate 17 has a driving rod insertion hole 18.
is inserted into the drive rod 14, and its outer peripheral edge 17a is engaged with the peripheral edge of the central opening 2a of the hair receiving upper wall 2 to be fixed. The inner circumferential edge of the inward flange 19 of the bristling rubber plate 17 is set to be located on the outer circumferential surface of the cylindrical portion 5a of the inner blade holding member 5, and the inner circumferential edge of the inward flange 19 and the circumferential surface of the drive rod 4 The cylindrical portion 5a of the inner cutter holding member 5 is made freely rotatable around the drive rod 4. The inward flange 19 of the hair retaining rubber plate 17 is located at the upper end of the inner blade push-up spring 20 attached to the drive rod 4, and extends outward from the upper circumferential surface of the cylindrical portion 5a on the lower surface side of the receiving portion 5b. pressed against. That is, the inward flange 19 is
and the upper end of the inner blade push-up spring 20.

It is preferable to interpose a sliding ring 21 having an excellent sliding effect between the inward flange 19 of the bristling rubber plate 17 and the receiving portion 5b of the inner blade holding member 5. In this case, the sliding ring 21 is fixed without rotating on the inward flange 19 of the bristling rubber plate 17 with a high coefficient of friction, whereas the inner cutter holding member 5
rotates smoothly on the sliding ring 21. Therefore, if the inward flange 19 is brought into direct contact with the lower surface of the receiving portion 5b, for example, when the outer cutter M receives pressure from the skin during use, the inner cutter holding member 5 generated via the inner cutter 3 Although there is a concern that the hair stopper rubber plate 17 may be damaged due to the slight rotation of the hair stopper rubber plate 17, this problem can be solved by the intervention of the sliding ring 21.

The order of assembling the bristling rubber plate 17, the inner blade holding member 5, etc. is as follows: First, the vibrator 6 is assembled into the main body case 1, and then the inner blade push-up spring 20 is attached to the drive rod 4 on the vibrator 6. Then, insert the driving rod insertion hole 18 of the hair stopper rubber plate 17 into the drive rod 4, and insert the outer peripheral edge 1 of the hair stopper rubber plate 17.
7a is engaged and fixed to the periphery of the central opening 2a of the lint receiving upper wall 2. At this time, the upper end of the inner blade push-up spring 20 comes into contact with the lower surface side of the inward flange 19 of the hair stopper rubber plate 17. Next, after inserting the sliding ring 21 into the drive rod 4 and placing it on the inward flange 19 of the bristling rubber plate 17, the cylindrical portion 5 of the inner blade holding member 5 is inserted.
A is inserted into the drive rod 4 and is rotatably inserted into the gap formed between the circumferential surface of the drive rod 4, the sliding ring 21, and the inward flange 19. Finally, an E-shaped washer 23 is attached to the upper end of the drive rod 4 to prevent the inner cutter holding member 5 from slipping out. Note that the sliding ring 21 is not necessarily required.

A wall 22 having a height substantially flush with the outer peripheral edge 17a of the hair-retaining rubber plate 17 is protruded around the central opening 2a on the hair-retaining rubber plate 2 to form a hair-retaining rubber plate. The outer peripheral edge 17a of 17 is surrounded. Therefore,
When cleaning hair debris, the brush protects the outer peripheral edge 17a of the hair retaining rubber plate 17 from turning up from the peripheral edge of the central opening 2a.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the electric shaver according to the present invention, in which FIG. 1 is a sectional view of the main part, FIG. 2 is a partially cutaway front view, and FIG. 3 is a partially cutaway front view. The cutaway side view and FIG. 4 are a sectional view taken along the line A--A in FIG. 3. FIG. 5 is a sectional view of a main part illustrating a conventional electric shaver. 1...Main case, 2...Flush receptacle upper wall, 2a
... Central opening, 4 ... Drive rod, 5 ... Inner blade holding member, 18 ... Drive rod insertion hole, 17 ... Hair stopper rubber plate, 19 ... Inward flange, 20 ... Spring.

Claims (1)

[Scope of Claim for Utility Model Registration] A main body case 1 having a central opening 2a in its lint receiving upper wall 2, a driving rod 4 protruding above the central opening 2a from inside the main body case 1, and a driving rod. 4, an inner blade holding member 5 inserted into the protruding upper end of the drive rod 4 so as to be vertically movable; an inner blade push-up spring 20 inserted into the lower side of the inner blade holding member 5 on the drive rod 4; and a drive rod opening in the center thereof. The insertion hole 18 is inserted between the inner blade holding member 5 on the drive rod 4 and the inner blade push-up spring 20, and the outer peripheral edge 17a thereof is engaged and fixed to the peripheral edge of the central opening 2a. It consists of a central opening 2a and a bristling rubber plate 17 that covers the upper part of the inner blade push-up spring 20, and an inward flange 19 is formed from the inner periphery of the driving rod insertion hole 18 of the bristling rubber plate 17. is held between a receiving portion 5b extending outward from the inner blade holding member 5 and the upper end of the inner blade push-up spring 20, and a central opening on the upper surface of the lint receiving upper wall 2. An electric shaver characterized in that a wall 22 that surrounds the outer periphery of the outer peripheral edge 17a of the hair retaining rubber plate 17 projects from the periphery of the hair retaining rubber plate 2a.