JPH1033851A - Electric razor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a trimmer blade perform a floating operation not to be affected by an operation part for the sliding-up operation of the trimmer blade. SOLUTION: This electric razor is provided with the trimmer blade 2 freely slidably supported, spring-energized in a projection direction and made freely floatable within a prescribed range, the operation part 7 for making the trimmer blade 2 perform a sliding operation exceeding the prescribed range for the floating and a connection means 70 for turning the trimmer blade 2 and the operation part 7 in a non-connected state at the time of the floating of the trimmer blade 2 to a connected state at the time of the sliding up of the trimmer blade 2 by operating the operation part 7 and sliding the trimmer blade 2 linking with the operation part 7. In a state where the trimmer blade 2 is not slid up by the operation of the operation part 7, the operation part 7 and the trimmer blade 2 are separated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric razor, and more particularly to an electric razor having a floatably supported trimmer blade.

[0002]

2. Description of the Related Art In providing a trimmer blade, the trimmer blade is floatably supported so that shaving can be appropriately performed in cooperation with the trimmer blade and other blades, and the trimmer blade is slid. Japanese Patent Application Laid-Open No. Hei 4-231991 discloses an arrangement in which shaving such as sharp shaving with the trimmer blade alone can be performed by raising the trimmer blade.

[0003]

The above-mentioned trimmer blade has the following features.
It is supported by a slide button type operation unit for the slide up operation, and therefore, the float operation in the state where the slide up is not performed is also affected by the support of the operation unit. Yes, it was difficult to obtain a good float operation, and it was difficult to increase the float amount.

The present invention has been made in view of such a point, and an object of the present invention is to perform a float operation on a trimmer blade which is not affected by an operation unit for a slide-up operation of the trimmer blade. There is in providing a shaver that can be made.

[0005]

According to the present invention, there is provided a trimmer blade which is slidably supported and is urged by a spring in a protruding direction so as to float within a predetermined range. An operating unit for performing a sliding operation exceeding a predetermined range for the operation of the trimmer blade by operating the operating unit by operating the operating unit with the trimmer blade and the operating unit that are not connected when the trimmer blade floats. It is characterized in that there is provided a connecting means which slides the trimmer blade in conjunction with the operation unit in a connected state when up. When the trimmer blade is not slid up by the operation of the operation unit, the operation unit and the trimmer blade are separated from each other.

As the connecting means, a lock means for restricting the movement of the operating part may be used, and the operating part and the trimmer blade may be connected by an operation of releasing the operation part by the locking means. If the operation surface of the lock unit is arranged on the operation surface of the operation unit, the lock unit and the operation unit can be operated simultaneously. Further, if the locking means is in contact with the elastic portion provided on the trimmer blade and is urged toward a position for restricting the movement of the operation section, it is possible to prevent the locking means from rattling.

[0007] If a maintenance section is provided to keep the lock means during the sliding operation of the trimmer blade by the operation section at the position where the restriction of the movement of the operation section is released, the lock means is always operated when the trimmer blade is slid up. Since there is no need, operability is improved. It is also preferable to provide a support for maintaining the trimmer blade in a slide-up state in the support of the trimmer blade. Even if a force for pushing down the trimmer blade is applied in a state where the trimmer blade is slid up, this force is not applied to the operation unit, so that the operation force of the operation unit can be appropriately set.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The illustrated electric razor in which a blade head 1 and a pair of trimmer blade type blade heads 2 and 2 located on both sides of the blade head 1 are arranged in parallel at the upper end of a main body 5, These three blade heads 2, 1 and 2 are driven simultaneously by a motor 4. In FIG. 2, 8 is a switch unit, and 9 is a charger.

Of the blade heads 1 and 2, the blade head 1 as a main blade is formed of a thin metal plate and has an outer blade 10 having a large number of blade holes. Holding the inner cassette 11 in a rectangular frame shape
And an inner blade 12 slidingly contacting the inner surface of the outer blade 10. The inner cassette 11 has elastic pieces 13 on both end surfaces as shown in FIG.

The blade head 1 is mounted on the main body 5 via the outer cassette 3. As shown in FIG. 5, the outer cassette 3 is formed in a rectangular frame shape by molding a synthetic resin.
0, a guide groove 31 is provided on both sides, and a guide groove 32 and a spring receiver 33 are provided on the inner surface in the width direction.
The inner cassette 1 having the outer blade 10 of the blade head 1
1 is accommodated in the outer cassette 3 from the lower opening of the outer cassette 3 and is prevented from falling off by the elastic piece 13 being located above the receiving piece 30 and is within a small vertical range with respect to the outer cassette 3. It becomes movable with. The protrusion 15 provided on the inner cassette 11 is used for putting a finger when removing the inner cassette 11 from the outer cassette 3.

The two blade heads 2 of the trimmer blade type are
As shown in FIG. 6, a trimmer base 20 and a fixed blade 21 fixed to the upper surface of the trimmer base 20 by fitting with the fitting protrusion 201, respectively, are arranged on the upper surface side of the fixed blade 21 and fitted together. A movable blade 22 slidably guided by the projection 201; a pressing spring 23 connected to the trimmer base 20 to press the movable blade 22 toward the fixed blade 21 by a spring piece 231; and a top surface of the pressing spring 23. A blade cover 24 connected to the trimmer base 20, a trimmer driver 25 having an upper end engaged with the movable blade 22, a skin contact guide 26 mounted on the trimmer base 20, and a float spring 27. The center of the trimmer driver 25 in the vertical direction is supported by a shaft 205 provided on the trimmer base 20. In the figure, reference numeral 206 denotes a hook for preventing the trimmer driver 25 from being disengaged by engaging with the trimmer driver 25;
Reference numeral 7 denotes a pin that is inserted into the coupling hole 240 of the blade cover 24 and fixes the blade cover 24.

When the skin contact guide 26 is mounted on the trimmer base 20, the protrusion 2 protrudes from the lower end thereof.
62 is placed on the upper surface of the elastic push-up piece 202 provided on the trimmer base 20, and hooks 261 projecting from both sides are provided on the lower surface of the upper wall of the engaging recess 203 provided on the side surface of the trimmer base 20. Contact with the trimmer base 20
Integrated into

The two blade heads 2, 2 are also arranged in the outer cassette 3. At this time, the engagement between the trimmer base 20 and the guide groove 32 and the contact of the skin
The engagement between the hook 261 of 60 and the guide groove 31 enables the outer cassette 3 to slide freely in a small vertical range. The blade head 2 is urged upward by a float spring 27 disposed between the lower surface of the skin contact guide 26 and the spring receiver 33 of the outer cassette 3.

The inner blade 12 of the blade head 1 is reciprocally driven by being connected to a reciprocating driving driver 50 via a joint 51 as shown in FIG.
The upper blade 3 urges the upper blade 3 into contact with the inner surface of the outer blade 10.
The blade head 1 can also float freely by the spring force of the push-up spring 53. Since the joint 51 also has an engaging portion with the lower end of the trimmer driver 25 of each blade head 2, when the inner blade 12 of the blade head 1 is driven to reciprocate, via the trimmer driver 25. The movable blade 22 of the blade head 2 is also driven back and forth.

The blade head 2 is provided with the float spring 27.
When the blade head 2 is pressed against the skin, the blade head 2 sinks against the float spring 27 as shown in FIG. 8, but from the inner cassette 11 of the blade head 1. Since the protruding projection 14 shown in FIG. 5 is located in the downwardly opened engagement groove 208 provided on the trimmer base 20 of the blade head 2, the blade head 2 is in the middle of the sinking operation. The blade head 1 also sinks in conjunction with it.

Further, as described above, the projecting piece 262 is placed on the upper surface of the push-up piece 202 of the trimmer base 20, and the hook 261 is placed on the lower surface of the upper wall of the engaging recess 203 of the trimmer base 20 as described above. Because it is in contact with the trimmer base 20, it is integrated with the trimmer base 20, and when the skin contact guide 26 moves up and down, the trimmer base 20 also moves up and down at the same time, and furthermore, the trimmer base 20 moves up and down. Is performed, the skin contact guide 26 also moves up and down. That is, the skin contact guide 26 and the trimmer base 20 receive the spring force of the float spring 27 and float at the same time.

The trimmer blade type blade head 2 thus formed has a plurality of ribs 80 made of elastomer resin on the upper surface of the blade cover 24 and on the blade head 1 side.
The hair raising member 8 having elasticity is attached. The razor member 8 in which each rib 80 is arranged in parallel with the blade edge of the blade head 2 and the longitudinal direction of the blade head 1 has an upper end substantially equal to the height H of the upper end of the blade head 1 as shown in FIG. Where the blade heads 1, 2
Is pressed against the skin S, the hair raising member 8 also comes into contact with the skin S.

Trimmer blade type blade head 2 for rough shaving
When the electric razor is moved so as to cut the hair with the blade head 1 which is the main blade for finishing shaving after the hair is cut with the hair, the skin S of the portion where the hair is cut with the blade edge of the blade head 2 is raised. After contacting the member 8, it comes into contact with the blade head 1. At this time, the elastic hair raising member 8 composed of a plurality of ribs raises the hair by being hooked on the hair,
The hair is raised by stretching the skin between the blade head 1. Even if the hair is sleeping, the hair raising member 8 is raised immediately before the blade head 1 portion comes into contact with the hair. While being caught and cut by the head 1, the angle of the hair at the time of being caught is determined by the outer blade 1 of the blade head 1.
It is the angle that is most easily introduced to 0,
The introduction efficiency of the hairs into the blade head 1 is greatly improved by the presence of the hair raising members 8.

Further, the upper end of the raising member 8 is set to be substantially the same height as the top position H of the blade head 1 which is the main blade, but this is higher than the top position H of the blade head 1. If the upper end position is too high, the hair raising member 8 cannot ensure a sufficient contact pressure between the blade head 1 and the skin S, which makes it impossible to shave the hair shortly. If the upper end position of the hair raising member 8 is too lower than the top position H of the head 1, the hair raising effect of the hair raising member 8 cannot be sufficiently obtained.

By the way, even when the skin contact guide 26 is pressed against a soft skin such as an armpit, the skin enters the movable blade 22 or the fixed blade 21 of the trimmer blade type blade head 2 and is damaged. The blade head 2 and the skin contact guide 26 are provided to prevent
Has been described as being integrated, but one blade head 2
By operating the slide button 7 disposed on the outer surface of the outer cassette 3, the skin contact guide 26 and the trimmer base 20 are separated, and only the member on the trimmer base 20 side can be moved upward. . When the blade head 2 floats, the slide button 7 for sliding up the blade head 2 is completely separated from the blade head 2. 7 has no effect.

To explain this point, the slide button 7
Are two pairs of hooks 71 protruding rearward as shown in FIG.
The hook 71, 72 and the lock button 70 are provided on the outer cassette 3 and have a total of five vertically long slots 35, 36, 37 and is slidably mounted on the outer surface of the outer cassette 3 so as to be vertically slidable. And lock button 70
Is held between the slide button 7 and the outer cassette 3 and is prevented from rotating by fitting with the non-circular recess 73 on the back of the slide button 7, and the tip is provided on the trimmer base 20. To the elastic piece 204 provided. Therefore, the lock button 70 is urged by the elastic piece 204, so that the lock button 70 does not rattle.

When the slide button 7 is at the lower position, the portion of the lock button 70 located inside the outer cassette 3 is located below the projections 38 provided on both sides of the elongated hole 35 on the inner surface of the outer cassette 3. Therefore, even if the slide button 7 is moved upward, the lock button 70 and the projection 3
8 to be hindered. In this state, the hooks 71 and 72 of the slide button 7 do not prevent the blade head 2 from moving up and down. Therefore, the blade head 2 including the skin contact guide 3 can float freely.

However, when the lock button 70 is pushed in, the engagement between the projection 38 of the outer cassette 3 and the lock button 70 is released, so that the slide button 7 can be moved upward. Further, as shown in FIG. 9, the pushed lock button 70 pushes the elastic piece 204 backward, and the slide button 7 is pressed to position the engagement protrusion 209 of the elastic piece 204 immediately above the hook 72 of the slide button 7. If it is moved upward, the trimmer base 20 is also pushed and moves upward.

When the trimmer base 20 moves upward as described above, the push-up piece 202 rides on the release protrusion 39 provided on the inner surface of the outer cassette 3 shown in FIG. The push-up piece 202 comes off from the protruding piece 262 of the skin contact guide 26 placed on the
Guide 26 for the upward movement of trimmer base 20
Does not follow, the members of the blade head 2 except the skin contact guide 26 move upward in conjunction with the slide button 7. During this movement, the state in which the lock button 70 rides on the protrusion 38 and is pushed in is maintained, so that the lock button 70 has to be pushed in only at the initial stage.

When the slide button 7 reaches the upper end position of the sliding range, the lock button 70 gets over the projection 38, so that the lock button 70 is returned by urging by the elastic piece 204, and the lock button 70 is located above the projection 38. Because of the position, the slide button 7 cannot be moved downward. Also in this state, as is apparent from FIG. 10, since the engagement state between the trimmer driver 25 and the joint 51 is maintained, the reciprocating motion from the driver 50 is transmitted to the movable blade 22. Therefore, sharp shaving or the like by the blade head 2 can be performed.

To return the blade head 2 to the original state, the slide button 7 may be lowered while pressing the lock button 70 again. If the slide button 7 is moved downward in a state where the lock button 70 is disengaged from the projection 38, the hook 71 of the slide button 7 pushes down the base of the push-up piece 202 to lower the trimmer base 20. Move to When the trimmer base 20 is lowered, the push-up piece 202 rides on the release projection 39 on the inner surface of the outer cassette 3 and bends backward, so that the distal end of the skin contact guide 26 rides over the protrusion 262 and the protrusion 262. And the skin contact guide 26 and the trimmer base 20 are integrated again.

The slide-up state of the blade head 2 shown in FIG. 10 is maintained by the elastic pieces 204 resting on the projections 40 provided on the outer cassette 3 as shown in FIG. For this reason, even if a force for pushing down the blade head 2 is applied by pressing the blade head 2 against the skin, this force is not applied to the slide button 7.
The hooks 71, 72 and the like are not damaged.

If the above-mentioned force is large, the blade head 2 may be damaged. Here, as shown in FIG. 11B, the portion of the elastic piece 204 which is placed on the projection 40 is inclined (or inclined). By making the upper surface of the projection 40 an inclined surface, when the force for pushing down the blade head 2 is large, the elastic piece 204 bends to the right in the drawing and separates from the projection 40 as in the case where the lock button 70 is pushed in. At this point, the lock button 70 is no longer biased by the elastic piece 204 and is easily moved to a position where it is disengaged from the projection 38. ) And slide it down. The blade head 2 and the slide button 7 are not damaged by the above-mentioned force.

FIG. 12 shows another example. Here, the elastic piece 20
4 is provided on the lock button 70 side, and the elastic piece 204 is brought into contact with the trimmer base 20 to obtain an urging force for pushing the lock button 70 outward. When the lock button 70 is not depressed, the blade head 2 is allowed to float freely while being separated from the slide button 7 and the lock button. However, when the lock button 70 is depressed, the engagement with the projection 38 is released. And the tip of the lock button 70 is the trimmer base 20
When the slide button 7 is moved upward in this state, the piece 204 'is pushed up by the lock button 70, so that the blade head 2 also moves upward.

[0030]

As described above, according to the present invention, there is provided a trimmer blade which is slidably supported and is urged by a spring in a projecting direction so as to float within a predetermined range.
An operating unit that causes the trimmer blade to perform a sliding operation that exceeds a predetermined range for the float, wherein the trimmer blade and the operating unit that are not connected when the trimmer blade floats are operated by operating the operating unit. When the trimmer blade is slid up, there is a connecting means that slides the trimmer blade in conjunction with the operation unit when the trimmer blade slides up. The trimmer blade floats without being affected by the operation part for the slide-up operation, so that a good float operation can be obtained and the float of the trimmer blade can be obtained. It is easy to increase the amount.

If a lock means for restricting the movement of the operating part is used as the connecting means, and the operation part and the trimmer blade are connected by the operation of releasing the restriction of the movement of the operating part by the locking means, the lock means may be connected to the locking means. Since the connecting means can also be used, there is no need to provide a separate connecting means, so that the operation does not become cumbersome. If the operation surface of the lock unit is arranged on the operation surface of the operation unit, the lock unit and the operation unit can be operated at the same time, so that the operability is further improved.

If the locking means is in contact with the elastic part provided on the trimmer blade and is urged toward a position for restricting the movement of the operating part, it is possible to prevent rattling of the locking means. , A favorable operation feeling can be obtained.
In addition, if a maintenance unit is provided to keep the lock unit during the sliding operation of the trimmer blade by the operation unit at the position where the restriction of the movement of the operation unit is released, it is necessary to always operate the lock unit when sliding the trimmer blade up. Is eliminated, so that the operability can be further improved.

If a holding portion for maintaining the trimmer blade in the slide-up state is provided on the support portion of the trimmer blade, even if a force for pushing down the trimmer blade is applied while the trimmer blade is slid up, this force is applied to the operating portion. Is not applied, so that the operation force of the operation unit can be appropriately set, and at the same time, the holding force of the slide-up state can be appropriately set.

[Brief description of the drawings]

FIG. 1 is a partial longitudinal sectional view of an example of an embodiment of the present invention.

FIG. 2 is a perspective view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is a cross-sectional view of the same staircase.

FIG. 5 is an exploded perspective view of the blade head, the outer cassette, and the slide button in the same.

FIG. 6 is an exploded perspective view of the same trimmer blade.

FIG. 7 is an exploded perspective view of the outer cassette and a slide button according to the third embodiment.

FIG. 8 is a partial longitudinal sectional view showing a state of the above float.

FIG. 9 is a partial longitudinal sectional view showing a state in which the lock button is pushed in and slid up.

FIG. 10 is a partial longitudinal sectional view showing a state at the time of completion of the slide-up operation.

11A and 11B show a state in which the blade head retains its position when the slide-up operation is completed, wherein FIG. 11A is a partial rear view, and FIG. 11B is a partial sectional view.

FIG. 12 is a partial rear view in another example.

[Explanation of symbols]

 2 Blade head (trimmer blade) 7 Slide button 70 Lock button

Claims (6)

[Claims] 1. A trimmer blade which is slidably supported and is spring-biased in a protruding direction so as to be floatable within a predetermined range, and the trimmer blade performs a sliding operation exceeding a predetermined range for the float. An operating unit for performing the operation, wherein the trimmer blade and the operating unit that are not connected to each other when the trimmer blade floats are linked to the operating unit when the trimmer blade slides up by operating the operating unit. An electric razor comprising a connecting means for sliding a trimmer blade. The connecting means is formed by a lock means for restricting the movement of the operating part, and the connecting means connects the operating part and the trimmer blade by an operation of releasing the restriction of the movement of the operating part by the locking means. The electric shaver according to claim 1, characterized in that: 3. The electric shaver according to claim 2, wherein the operation surface of the lock means is disposed on the operation surface of the operation unit. 4. The electric shaver according to claim 2, wherein said locking means is urged toward a position for restricting the movement of said operating part by contacting said elastic part provided on said trimmer blade. 5. An electric shaver according to claim 2, further comprising a maintaining portion for keeping the lock means during the sliding operation of the trimmer blade by the operating portion at a position for releasing the restriction of the movement of the operating portion. . 6. The electric shaver according to claim 1, wherein a holding portion for keeping the trimmer blade in a slide-up state is provided on a support portion of the trimmer blade.