JPS5850755B2 - electric razor trimmer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a trimmer device for an electric shaver.
7, an eccentric pin 16 is fixed to the motor shaft 17a, a main blade 38 for shaving is connected to the eccentric pin 16, one end of the swing lever 7 is rotatably supported on the drive rod frame 5, and the swing lever 7 is A long hole-shaped trimmer joint swinging part 7e is opened in the lever 7 in the direction away from the pivot point thereof, and the body 4 is arranged so that the drive rod frame 5 can be freely slid in the length direction of the trimmer joint swinging part 7e. At the same time, the eccentric pin A6 is slidably engaged with the trimmer joint swinging part 7e, and the other end of the swinging lever 7 is connected to the inner blade of the trimmer block B to connect the trimmer joint of the eccentric pin 16. The relative movement amount with respect to the swinging part 7e and the amplitude of the inner cutter 25 are made proportional, and the main cutter 38 and the trimmer block B
This invention relates to a trimmer device for an electric shaver characterized in that a drive rod frame 5 slides in conjunction with the operation of a switching sliding plate 21 that switches between driving and driving.

In the conventional example, the driving of the main blade and the driving of the l-IJ machine are performed by separate operation parts, which has the disadvantage that it is not easy to use because it cannot be performed with one switching sliding plate, and the trimmer is not easy to use. The stroke of the swinging lever to change the amplitude of the inner cutter cannot be done with a simple structure, for example, if the swinging lever amplitude and the amplitude of the trimmer inner cutter are the same, the sharpness may change. If the amplitude of the trimmer inner blade is increased due to the problem, the amplitude of the swing lever will also be increased, resulting in a larger space within the body and a larger overall shape.

In addition, in the case where the main blade drive section and the trimmer drive section are located at almost the same position, the position of the trimmer is almost fixed, which is extremely restrictive in terms of design and usability.

The present invention was made in view of the drawbacks of the conventional example, and
The first object of the present invention is to combine the main blade drive and trimmer drive into one unit.
The second purpose is to provide a trimmer device for an electric shaver that is easy to use by using two switching sliding plates.The second purpose is to adjust the amplitude of the inner blade of the trimmer by adjusting the amount of sliding of the switching sliding plates. We are able to provide electric razor trimmer equipment.

The present invention will be described in detail below according to illustrated embodiments.

Outer blade 26, inner blade 25, trimmer driver 24, push-up spring 2
3. A trimmer block B is a structure in which the dustproof plate 22 is assembled into the trimmer base 27.

The trimmer base 27 has an L-shaped bent outer blade mounting plate portion 27C.
Pivot plate portions 27d are erected facing each other on the inner surface of the
A pivot hole 27a is provided at the tip of the pivot plate portion 27d, and a drive hole 27b is provided adjacent to the bent portion of the outer blade mounting plate 27C of the pivot plate portion 27d.

The trimmer driver 24 has a cylindrical portion 24a that projects upward.

The trimmer mounting base 19 has tip projections 19J having tip holes 19a protruding from the front of both ends of the base portion 19d, and locking arms 19e extending above the center of both ends of the base portion 19d. It protrudes, and its free end is bent outward to provide an upper boss 19C.

Two guide grooves 19b are bored in parallel to each other in the base portion 19d.

An upright plate 19f is provided at the rear end of the base portion 19d.

To explain the switching sliding plate 21, two mounting arms 21d protrude forward from the plate body 21C. It is a protruding structure.

Two sliding bosses 21b are erected on the upper surface of the plate body 21C, and an uneven surface is provided on the lower surface of the rear end to provide a finger rest in the portion 21.
e is provided.

The trimmer block B is rotatably attached to the trimmer mount 19 by press-fitting the support pin 20 into the tip hole 19a of the trimmer mount 19 and the pivot hole 27a of the trimmer base 27. , switching sliding plate 2
1 into the drive hole 27b of the trimmer base 27, and at the same time insert the sliding boss 21b of the switching sliding plate 21 into the guide groove 19b of the trimmer mounting base 19 so as to be freely slidable, and roughly insert the sliding boss 21b Undercut portion 21 protruding from the side surface of
f is hooked onto the end of the guide groove 19b of the trimmer mount 19, and the switching sliding plate 21 and the trimmer mount 19 are slidably engaged.

In this state, when the switching sliding plate 21 is slid forward and turned on, the trimmer base 27 rotates using the tip hole 19a of the trimmer mount 19 as a fulcrum, and the trimmer block B rotates and projects at right angles to the base portion 19d. It turns out.

Trimmer block B1 switching sliding plate 2 assembled in this way
1 and the trimmer base 27 are mounted inside the body back 1.

In this case, the upper boss 19c of the trimmer mount 19 is fitted into the notched groove 1a provided on the upper inner surface of the body back 1 and fixed.

In this case, the trimmer block B and the switching sliding plate 21
The finger hook portion 21e is exposed to the outside.

This body back part 1 engages with the body front part 2 to form a pair of bodies 4.

Next, the eccentric pin 16 and the coupling 15 are attached to the motor shaft 17a.
, the compression coil spring 14 and the fixed ring 13 are inserted and fixed through the lower end opening of the motor mount 8.

The motor mounting base 8 has a substantially cylindrical shape with an opening at the lower end, a circumferential shaft hole 8f is bored in the center of the upper surface 8e, a longitudinal guide groove 37 is formed in the rear part, and a screw 9 is provided. motor 1
It is fixed at 7.

A joint boss protrudes from the upper front surface of the motor mount 8. The trimmer joint 10 is inserted into the joint boss 8a via the ring 11, and the joint bearing 36 is inserted into the boss 8 of the motor mount 8.
The trimmer joint 10 is rotatably attached by press-fitting into the hole a.

The swing lever 7 has a pot-shaped drive hole 7d.
The narrower side of the drive hole 7d is used as the trimmer joint swinging part 7e, and the wider side is used as the main blade rotating part 7f.

The front end of the swing lever 7 has a spherical portion 7b projecting downward, and the rear end has a fulcrum hole 7a.

The trimmer joint swinging part 7e has a long hole shape that is longer in the direction from the fulcrum hole 7a.

A guide pin 35 is inserted into the fulcrum hole 7a, the IJ song, and the fulcrum pivot hole 5a of the drive rod frame 5, and the tips are caulked to form the drive rod block F.

The drive rod frame 5 is plate-shaped and has an elliptical eccentric pin protrusion hole 5d in the center, and upper surface convex portions 5C on both sides of the hole 5d.
The rear edge of this upper surface convex portion 5C is tapered.

A fulcrum pivot hole 5a is provided at the rear end of the drive rod frame 5, and a horizontal boss 5b protrudes outward from the side surface.

This drive rod block F is positioned on the upper surface of the motor mount 8, and the lower part of the guide pin 35 and the guide groove 37 of the motor mount 8 are
are fitted to serve as a guide when the drive rod block F moves back and forth.

At this time, the spherical portion 7b provided at one end of the swing lever 7 fits into the tip groove 10a of the trimmer joint 10.

In this state, the horizontal protrusion 8 that is protruded from the side surface of the motor mounting base 8
A hollow hole 12a formed in the center of the arm portion 12d of the lever 12 is fitted into the hole 12a formed in the center of the arm portion 12d of the lever 12.

This lever 12 has a horizontal plate 1 at the lower end of the two arm parts 12d.
2e, and a medium length 1 is installed in the center of the arm part 12d.
2a, an upper hole 12b is bored at the upper end, and a horizontal plate 12e
Two pilot holes 12C are drilled in the hole.

The upper hole 12b of this lever 12 is fitted with the horizontal boss 5b of the drive rod frame 5, and together they form a motor block A.

This motor block A is pushed into the body back 1 so that it is positioned above the switching sliding plate block E.

At this time, the pilot hole 12C of the lever 12 fits into the sliding boss 21b of the switching sliding plate 21.

Also, the module block 18, switch spring 28, lock spring 29, lock button 30, switch handle 3
1, and a switch block G consisting of a switch frame 32 is inserted into the body back part 1. The body front part 2 is fitted and fixed to the body back part 1, and a blade mount insertion hole 2b is bored in the upper front face. It is set up.

The blade mount 3 is disc-shaped and has a lower protrusion 3a protruding from its lower surface.When inserting the blade mount 3 into the blade mount insertion hole 2b, insert the lower protrusion 3a into the front part 2 of the body. It is adapted to be rotationally engaged with a retaining convex portion 2a provided on the inner surface.

The body front part 2 with the blade mount 3 engaged in this way is fitted onto the body back part 1, and the body front part 2 is locked with a hook 1e that projects upward from the inner surface of the body back part 1, and the screw is screwed. At 34, the body front part 2 and the body back part 1 are fixed.

Further, it is screwed to the mounting boss 8d of the motor mount 8 through the round hole 3b of the blade mount 3.

The eccentric pin 16 is fitted onto the motor shaft 17a of the motor 17, and the eccentric cam portion 16a of the eccentric pin 16 is connected to the swing lever 7.
It is fitted into the drive hole 7d of the eccentric cam part 1'6a.
The locking tooth 16b provided on the upper part of the drive rod frame 5 fits into the pin protrusion hole 5d, and the central shaft 16C that protrudes from the center of the eccentric pin 16 protrudes upward from the center hole 3C of the blade mount 3. A coupling 15 for rotationally driving the main blade 38 for shaving is slidably inserted into this central shaft 16C, and the lower surface of this coupling 15 is connected to the upper surface convex portion 5C of the drive rod frame 5. It is in sliding contact with the

Further, a compression coil spring 14 is inserted into the center shaft 16C, and a fixed ring 13 is fixed to the tip of the center shaft 16C, so that the compression coil spring 14 presses the coupling 15 downward.

When the switching sliding plate 21 is moved upward to turn it on, the trimmer block B rotates 90 degrees around the fulcrum of the tip hole 19a of the trimmer mounting base 19, and projects at right angles to the back of the body 1 as shown in FIG. At the same time, the switching sliding plate 21 covers the storage hole 1d of the body back 1 and also serves as a dustproof function.

At this time, the sliding boss 21b of the switching sliding plate 21 is connected to the lever 12.
Since the pilot hole 12C of the lever 12 is fitted, the lever 12 rotates around the horizontal protrusion 8C of the motor mounting base 8, and the upper end of the lever 12 moves in the opposite direction to the lower end.
Since the upper end hole 12b and the horizontal boss 5b of the drive rod frame 5 are fitted, the drive rod block F moves in the direction A in FIG. The swinging portion 7e is fitted, and the rotation of the motor 17 causes the swinging lever 7 to reciprocate about the fulcrum hole 7a.

At this time, since the drive rod frame 5 also moves in the A direction, the upper surface convex portion 5C pushes up the coupling 15, and the coupling 15 and the engagement teeth 16b of the eccentric pin 16 are disengaged.
The main blade 38 stops rotating and the drive is separated.

In this state, the inner cutter 25 of the trimmer block B is driven.
Since the trimmer joint 10 is fitted with the tip groove 10a of the motor mounting base 8, the trimmer joint 10 is fitted with the boss 8 of the motor mounting base 8 in accordance with the reciprocating movement of the swing lever 7.
It reciprocates around a.

Therefore, the lower end groove 10b of the trimmer joint 10 reciprocates in the opposite direction to the upper end groove 10a, but the trimmer block B
The cylindrical portion 24 of the trimmer driver 24 is rotated and protruded.
Since the lower end groove 10b of the trimmer joint 10 is fitted into the lower end groove 10b of the trimmer joint 10, the trimmer driver 24 reciprocates in accordance with the movement of the lower end groove 10b of the trimmer joint 10, and therefore the inner cutter 25 of the trimmer reciprocates. .

Conversely, when the switching sliding plate 21 is slid downward to turn it off, the trimmer block B rotates and is stored in the storage hole 1d of the body back 1, and the cylindrical portion 24 of the trimmer driver
a comes off from the lower end groove 10b of the trimmer joint 10.

At this time, the swinging lever 7 slides in the A direction due to the action of the lever 12, and the eccentric cam 16a of the eccentric pin 16 fits into the main blade rotating portion 7f of the drive hole 7d of the swinging lever 7, causing the swinging Lever 7 no longer reciprocates.

Further, as the drive rod frame 5 moves in the A direction with the swing lever 7, the upper surface convex portion 5C of the drive rod frame 5 also moves in the A direction, so the coupling 15 is lowered by the action of the compression coil spring 14, and the eccentric pin 16 The engagement teeth 16b of the main blade 38 are engaged with the coupling 15, and the main blade 38 is rotated.

Since the present invention has the above-mentioned structure, switching between driving the main blade and driving the trimmer can be performed by simply sliding a single switching sliding plate in the vertical direction. It has the advantage of being extremely easy to use, as there is no need to change hands or look for the switching part each time, and since the amplitude of the swinging lever changes in proportion to the amount of sliding of the switching sliding plate, it can be adjusted to suit your preference. This has the advantage that the amplitude of the trimmer can be easily obtained.

In addition, an elastic protrusion 5e is provided on the side surface of the drive rod frame 5,
The reciprocating movement of the switching sliding plate 21 may be given a click characteristic by making the switching sliding plate 21 go over the mounting boss 8d of the motor mounting base 8.

Furthermore, if the elastic protrusion 5e is brought into contact with the mounting boss 8d at the point where it passes over the mounting boss 8d, chattering noise due to vibration of the swing lever 7 can be prevented.

Further, the arm portion 1 of the lever 12 as shown in FIG.
An engagement recess 12f is provided on the inner surface of the motor mounting base 8.
The switching sliding plate 21 has a click characteristic by providing an engaging convex surface 8g protruding outwardly on the side surface of the switch plate 21, and rotating the lever 12 to cause the engaging convex surface 12f to engage and disengage from the engaging recess 8g. It may be possible to do so.

In addition, the swing lever T itself is given spring properties, and the drive hole 7d is
The trimmer joint swinging part 7e of the eccentric pin 16 is connected to the eccentric cam part 1 of the eccentric pin 16.
By making the width slightly narrower than 6a and press-fitting the eccentric cam part 16a into the trimmer joint swinging part 7e, impact noise is generated between the eccentric cam part 16a and the trimmer joint swinging part 7e when the eccentric pin 16 rotates. It may be possible to prevent this.

Here, the reference numeral 70 is an elastic hole that specifically imparts elasticity to the trimmer joint swinging portion 7e.

In addition, the lower convex portion 3a provided on the lower surface of the blade mounting base 3 is widened to serve as a guide for the lever 12, so that the upper hole 12b of the lever 12 can be protected against external shock by the horizontal boss 5b of the drive rod frame 5. It may be better to keep it from coming off.

By doing this, the blade mounting base 3 can be attached to the front part 2 of the body.
The earthquake resistance of the lever 12 can be improved simply by rotating and inserting it into the blade, and repairs can be easily performed by simply removing the blade mount 3.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of the present invention when the trimmer is stored, Fig. 2 is a perspective view of an embodiment of the same when the above trimmer is protruded, and Fig. 3 is an exploded perspective view of the above. FIG. 4 is a perspective view of one embodiment of the motor block of the present invention, FIG. 5 is an exploded perspective view of the trimmer mount and trimmer block of the present invention, and FIG.
The figure is a perspective view of one embodiment of the trimmer block of the present invention.
The figure is a perspective view of an embodiment in which the trimmer block of the present invention is stored, FIG. 8 is a perspective view of an embodiment in which the trimmer block is protruded, and FIG. 9 is a switch block of the present invention. A perspective view of one embodiment, FIG. 10 is a vertical cross-sectional view of the present invention from the side, FIG. 11 is a vertical cross-sectional view of the same as above, and FIG. 12 is a side view of the operating portion of the present invention. The vertical cross-sectional view of FIG. 13 is taken along the line A-A shown in FIG.
14 is a cross-sectional view cut along the center line of the same motor as above, FIG. 15 is a rear view of the present invention, and FIG. 16 is a cross-sectional view of the present invention shown in FIG. 11. 17 is a cross sectional view taken along the line C-C shown in FIG. 10 of the present invention, FIG. 18 is a front view of one embodiment of the switch block, and FIG. 19 is a longitudinal sectional view of the same as above. , FIG. 20 is a vertical cross-sectional view when cut in a direction perpendicular to FIG. 19, FIG. 21 is a cross-sectional view taken along the line D-D shown in FIG. 12, and FIG. 22 is a drive rod frame of the present invention. FIG. 3 is an exploded perspective view of the motor mounting base and lever of the present invention, FIG.
FIG. 25 is a plan view of an embodiment of the swinging lever of the present invention, FIG. 25 is a plan view of an embodiment of the swinging lever according to the above, FIG. 26 is a perspective view of the same as the above, and FIG. 27 is an eccentric of the present invention. A perspective view of one embodiment of the pin, 4 is a body, 4a is a front surface, 4b is a back surface, 5 is a drive rod frame, 7 is a swinging lever, 7e is a trimmer joint swinging part, 12 is a lever, 15 is a coupling, 16 is an eccentric pin, 16b is a locking tooth, 17 is a motor, 17a is a motor shaft, 25 is an inner blade, 21 is a switching sliding plate, 38 is a main blade, and B is a trimmer block.

Claims (1)

[Claims] 1. An eccentric pin is fixed to the motor shaft of a motor built into the body, a main blade for shaving is connected to the eccentric pin, and one end of the swing lever is rotatable on the drive rod frame. Supported by
A long hole-shaped trimmer joint swinging part is opened in the swinging lever in the direction away from and away from its pivot point, and the drive rod frame is arranged in the body so that it can slide freely in the length direction of the trimmer joint swinging part. At the same time, the eccentric pin is slidably engaged with the trimmer joint swinging part, and the other end of the swinging lever is connected to the inner blade of the trimmer block to determine the amount of relative movement of the eccentric pin with respect to the trimmer joint swinging part. An electric shaver characterized in that the drive rod frame slides in conjunction with the operation of a switching sliding plate that changes the amplitude of the inner cutter and switches the drive between the main cutter and the trimmer block. Trimmer device. 2. A main blade rotating part with a wide opening is formed on the pivot side of the swing lever so as to communicate with the trimmer joint swinging part, and when the eccentric pin is positioned inside the main blade rotating part, the eccentric pin idles and the inner blade is rotated. A trimmer device for an electric shaver according to claim 1, wherein the drive is cut off.