JPH10151285A - Reciprocating electric shaver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve sealing function by increasing a contact force between a drive element and a sealing member. SOLUTION: This reciprocating electric shaver is designed in such a manner that a drive element 3 which is reciprocated by a motor and transfers oscillation to an inner blade is projected from an opening provided at the top end of a main body 2, and a sealing member 5 which is freely deformed in an oscillation direction A of the drive element 3 covers the gap between the drive element 3 and the main body 2. At the shield part between the drive element 3 and the sealing member 5, a middle material 4 is inserted and sealed which has a hardness lower than that of the hard material of the drive element 3 and higher that of the soft material of the sealing member 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reciprocating electric shaver, and more particularly to a technique for improving the sealing performance by increasing the adhesion between a driver and a seal member.

[0002]

2. Description of the Related Art Conventionally, as a method of sealing a gap between a driver 3 and a main body 2 with a sealing member 5 made of waterproof rubber,
One of the type shown in FIG. 13 is provided. FIG.
The groove 3e is formed in a portion of the driver 3 that converts the rotation of the motor 6 into eccentric motion between the motor 6 side (inside) and the inner blade side (outside), and the groove 3e is formed in the groove 3e. The seal portion 5a of the seal member 5 having the same width is directly brought into close contact with the seal member 5 to prevent water from entering from outside and entry of shavings.

[0003]

However, in the case of a conventional sealing structure, the sealing member 5 must have a sufficiently low hardness so as not to hinder the reciprocating movement of the driver 3. The sealing member 5 is inserted into the groove 3e of the driver 3.
It is necessary to widen the opening of the seal member 5 beyond the size of the upper part of the driver 3 when fitting it in, and the seal portion 5a of the seal member 5 also needs to have sufficiently low hardness. On the other hand, the driver 3 needs to have sufficient rigidity to transmit the reciprocating motion, and therefore, the adhesion between the hard body forming the driver 3 and the soft body forming the seal member 5 is insufficient, and There was a problem that water infiltration from the water and intrusion of shavings occurred. That is, since the hard body (driver 3) and the soft body (seal member 5) are in close contact with each other, the area that is crushed by the surface pressure is small, so that the adhesion between them is weak and the sealing property is sufficiently enhanced. I couldn't do that.

SUMMARY OF THE INVENTION The present invention has been made in view of the above conventional example, and aims to improve sealing performance by sufficiently increasing the adhesion between a hard member constituting a driver and a soft member constituting a sealing member. It is an object of the present invention to provide a reciprocating electric shaver that can perform the above-mentioned operations.

[0005]

In order to solve the above-mentioned problems, the present invention provides a driving element 3 for reciprocatingly driving a motor to transmit an amplitude to an inner blade through an opening provided at an upper end of a main body 2. In a reciprocating electric shaver in which a gap between the driver 3 and the main body 2 is covered with a sealing member 5 which is protruded and is flexible in the vibration direction A of the driver 3,
And a sealing member between the sealing member 5 and a hard member constituting the driver 3 and a soft member constituting the sealing member 5 having an intermediate member 4 having a hardness. With this configuration, the contact between the intermediate member 4 having a lower hardness than the driver 3 and the seal member 5 causes the adhesion between the seal member 5 and the intermediate member 4 and the contact between the intermediate member 4 and the driver 3. The adhesion is improved respectively. In other words, in the case where the adhesion is the same, the sealing performance is such that the area where the soft body and the soft body are crushed by the surface pressure is greater than the tightness between the hard body and the soft body. By bringing the intermediate member 4 having a lower hardness than the driver 3) and the soft body (seal member 5) having a lower hardness than the intermediate member 4 into close contact with each other, the adhesion is improved accordingly, and the sealing performance is improved accordingly. I do.

The intermediate member 4 is connected to the seal 3a of the driver 3
In this case, the sealing performance between the intermediate member 4 and the driver 3 can be reliably improved.
The intermediate member 4 preferably has a seal portion 4a for isolating the seal portion 3a of the driver 3 with both a waterproof surface and a dust-proof surface. In this case, the adhesion between the intermediate member 4 and the driver 3 is reduced. As a result, it is possible to more reliably prevent the intrusion of water and intrusion of shavings during washing with water.

The intermediate member 4 is connected to the seal 3a of the driver 3
Is formed in a substantially cylindrical shape along the outer periphery of
It is preferable that a flange portion 4b for smoothing the vibration between the driver 3 and the seal member 5 is protruded from the outer peripheral portion of the seal member 5. In this case, the seal member 5 is fixed to the hard body (the driver 3) by the flange portion 4b. Since direct contact can be prevented, it is possible to prevent the seal member 5 from being broken by the vibration of the driver 3 and to make the vibration of the driver 3 smooth.

A seal member 5 is provided on an outer peripheral portion of the intermediate member 4.
It is preferable to project a cover portion 4c that covers the thin portion 5b of the seal member 5 from above. In this case, the thin portion 5b of the seal member 5 can be sufficiently protected from external force by the cover portion 4c, and the cover member 4 By projecting the portion 4c integrally, the strength of the cover portion 4c can be increased. The cross section of the intermediate member 4 is formed in a substantially U-shape opened downward, and its inner peripheral portion 4d is brought into close contact with the driver 3 and the sealing portion of the sealing member 5 is formed between the inner peripheral portion 4d and the outer peripheral portion 4e. 5
a is preferably sandwiched between the inner member 4a and the outer peripheral portion 4e of the intermediate member 4 to tighten the sealing portion 5a of the sealing member 5 so that an external force (such as a water flow or , A brush force) can be prevented by the intermediate member 4 from detaching the seal portion 5a of the seal member 5.

The cross section of the intermediate member 4 is formed in a substantially V-shape, and the inner inclined piece 4f is brought into close contact with the seal portion 3a of the driver 3, and the outer inclined piece 4g is fitted with the seal portion 5a of the seal member 5 on the outer inclined piece 4g. In this case, it is preferable that the sealing portion 5a of the sealing member 5 that is in close contact with the outer inclined piece 4g of the intermediate member 4 be pushed outward, so that the circumferential direction of the sealing member 5 is increased. Is increased, and the adhesive force with the seal member 5 is further increased.

One of the intermediate member 4 and the seal member 5 is provided with a concavely curved fitting recess 4h, and the other is provided with a convexly curved fitting projection 4i corresponding to the fitting recess 4h. It is preferable that the seal portion 5a of the seal member 5 be rotatably fitted to the intermediate member 4 in a state where the seal member 5 does not come off. In this case, the seal member 5 is inadvertently applied by external force or reciprocating motion of the driver 3 or the like. Even when the seal member 5 is deformed, the seal member 5 rotates to relieve those forces, and the fitting recess 4h functions as a so-called anchor, making it difficult for the seal member 5 to come off.

A tapered surface 4j inclined toward the driver 3 is formed on the outer peripheral portion of the intermediate member 4 so as to be higher, and the seal portion 5a of the sealing member 5 is press-fitted into the tapered surface 4j from above. Preferably, in this case, the sealing member 5
And the sealing portion 5a of the sealing member 5 is brought into close contact with the tapered surface 4j of the outer peripheral surface of the intermediate member 4 so that the adhesive force with the tapered surface 4j of the intermediate member 4 is increased. The seal portion 5a is pushed outward and the circumferential tension increases.

It is preferable that an uneven surface 4k is formed on the outer peripheral surface of the intermediate member 4 and the sealing portion 5a of the seal member 5 is brought into close contact with the uneven surface 4k. The surface 4k is easily deformed, and the surface pressure can be further improved. Preferably, the intermediate member 4 is formed of a waterproof material having air permeability.
The gas inside can pass through the permeable intermediate member 4 and escape to the outside, so that the pressure rise of the gas inside can be prevented.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below. As shown in FIGS. 2 to 5, a reciprocating electric shaver 1 includes two reciprocatingly driven upper ends of a main body 2 by a motor 6 as shown in FIGS. The driver 3 and two inner blades 7 to which the amplitude of the driver 3 is transmitted are arranged in parallel and in parallel, and a trimmer 8 movably arranged up and down along the surface of the main body 2 is attached to the back surface. Have been.

The inner blade 7 arranged at the upper end of the main body 2 is attached to the main body 2 via the frame 9 and the outer cassette 10, and is bent in an arcuate shape on the inner cassette having a rectangular frame shape. The outer blade 11 is attached to the outer blade 11, and the inner blade 7 is reciprocally movable in a state of sliding contact with the outer blade 11 by an inner blade push-up spring. On the other hand, a motor 6 and a pair of drivers 3 for converting the rotation of the motor 6 into reciprocating motion are disposed in the main body 2 via a mounting base. Is provided, and a plate-like base 3c is provided in the lower half, and the motor 6 is attached to both ends of the base 3c in the vibration direction A via joints that can be deformed in the vibration direction A. When the eccentric member 12 is rotated by the motor 6, the driver 3 reciprocates when the eccentric member 12 is rotated by the motor 6, and each of the inner blades 7 connected to the upper part of each of the drivers 3 is an inner surface of the outer blade 11. And make a reciprocating motion in sliding contact with. 3 is a battery, 14 in FIG. 4 is a switch handle, and 15 is a control circuit. These are fixed to one base together with the motor 6, and they are integrally stored in the housing of the main body 2. The lower part is closed by a cover 16 and the upper part is sealed by a seal member 5 described later.

Here, the driver 3 is made of a substantially cylindrical hard body for transmitting the amplitude of the motor 6 to the inner cutter 7, and is formed of a hard molded product such as POM. On the other hand, the seal member 5 includes the driver 3 and the driver 3
For covering a gap between an opening provided at the upper end of the main body 2 from which the protruding portion protrudes, and for flexibly isolating the inner blade 7 side and the inner side of the main body 2 with respect to the vibration direction A of the driver 3. And is made of a soft material such as rubber which can be flexed in the vibration direction A of the driver 3. As shown in FIG. 1, the seal member 5 is formed in a donut shape, the outer peripheral portion and the inner peripheral portion are each formed of a thick portion having a rectangular cross section, and the intermediate portion is formed by the vibration of the driver 3. It is formed of a thin portion 5b having a width larger than the width and having a substantially mountain-shaped cross section. The thick seal portion 5c on the outer peripheral side of the seal member 5 is sealed and fixed to the main body 2 side, and the inner thin portion 5b can move freely in the vibration direction A of the driver 3 while the inner peripheral portion is closed. The thick seal portion 5a on the side is fixed to the seal portion 3a of the driver 3 via an intermediate member 4 described later, whereby the seal member 5 does not hinder the vibration of the driver 3. .

An intermediate member 4 is hermetically interposed between the seal portion 3a of the driver 3 and the seal portion 5a of the seal member 5. The intermediate member 4 is made of a material having a hardness between the hard body constituting the driver 3 and the soft body constituting the seal member 5, for example, a material having an intermediate hardness. For example, an elastomer or a sponge-like substance is used. The hardness of the intermediate member 4 is not limited to the intermediate hardness between the hard body (driver 3) and the soft body (seal member 5), but may be any hardness between the two. The intermediate member 4 is formed in a U-shaped cross section by a cylindrical seal portion 4a along the outer periphery of the seal portion 3a of the driver 3 and a flange portion 4b protruding from both upper and lower sides of the seal portion 4a. Here, the seal portion 4a plays a role of isolating the seal portion 3a of the driver 3 with both a waterproof surface and a dust-proof surface, and the lower flange portion 4b is a seal between the inner peripheral portion 4d of the seal member 5 and the driver 3. It protrudes between the portion 3a and plays a role in smoothing the vibration between the driver 3 and the seal member 5.

The intermediate member 4 having an intermediate hardness between the hardness of the hard member constituting the driver 3 and the hardness of the soft member constituting the seal member 5 is provided between the driver 3 and the seal member 5. , The adhesion between the seal member 5 and the intermediate member 4 and the adhesion between the intermediate member 4 and the driver 3 are each improved. In other words, when the adhesion is the same,
The sealing performance is such that an area where the soft body and the soft body are crushed by the surface pressure is increased as compared with the case where the hard body and the soft body are in close contact with each other. Therefore, the intermediate member having a lower hardness than the hard body (the driving element 3). 4 and the soft body (seal member 5) having a lower hardness than this, respectively, whereby the adhesion is improved by that much, and the sealing performance is improved accordingly. Infiltration and intrusion of shavings can be reliably prevented. The inside and outside of the seal portion 3a of the driver 3 are isolated by both a waterproof surface and a dust-proof surface by a substantially cylindrical seal portion 4a along the outer periphery of the seal portion 3a of the driver 3 in the intermediate member 4. As a result, the sealing performance is greatly improved, and a flange portion 4b for projecting the vibration between the driver 3 and the seal member 5 is provided on the outer peripheral portion of the seal portion 5a. , That is,
Since the collar portion 4b is located between the driver 3 and the seal member 5, the seal member 5 can be prevented from directly contacting the hard body (the driver 3) by the collar portion 4b. There is an advantage that the seal member 5 can be prevented from being broken by the vibration of the child 3, the vibration of the driver 3 can be made smooth, and the seal member 5 can be easily fitted into the driver 3.

It should be noted that the intermediate member 4 may not be a separate member from the driver 3, and the intermediate member 4 may be integrally formed with the seal portion 3a of the driver 3 by insert molding or the like. 4 and the driving element 3 can be reliably improved in sealing performance. Next, another embodiment of the intermediate member 4 will be described with reference to FIGS. 6 to 12.
In the other respects, the structure other than the intermediate member 4 and the seal member 5 is the same as that of the embodiment shown in FIGS.

FIG. 6 shows an intermediate member 4 having a cylindrical seal portion 4a along the outer periphery of the seal portion 3a of the driver 3 and flange portions 4b protruding from both upper and lower sides of the seal portion 3a. A cover portion 4c is provided at the end to cover the thin portion 5b of the seal member 5 from above. The cover portion 4c can sufficiently cover the thin portion 5b of the seal member 5 and has a substantially mountain-shaped cross section.
b, is formed in a large disk shape to avoid b. Therefore, in addition to the effect of increasing the adhesion between the seal portion 3a of the driver 3 and the seal portion 5a of the seal member 5 by the seal portion 5a, Thus, the thin portion 5b of the seal member 5 can be sufficiently protected from external force, for example, a water flow at the time of washing, a force by a brush, and the like by the cover portion 4c. Further, since the cover portion 4c is integrally protruded using the tip of the upper flange portion 4b of the intermediate member 4, the cover portion 4c is supported by the intermediate member 4 fixed to the seal portion 3a of the driver 3. Cover part 4
The load applied to the cover c is received by the driver 3 via the intermediate member 4 so that the strength of the cover 4c can be increased, and the protection of the thin portion 5b of the seal member 5 by the cover 4c can be maintained for a long time. Become.

FIG. 7 shows that the cross section of the intermediate member 4 is formed in a substantially U-shape with a downward opening, and the inner peripheral portion 4d is brought into close contact with the driver 3 and the inner peripheral portion 4d is located between the inner peripheral portion 4d and the outer peripheral portion 4e. The seal portion 5a of the seal member 5 is sandwiched therebetween. In this embodiment, the sealing member 5 is opened from the lower surface opening of the intermediate member 4.
By inserting the intermediate member 4 into the groove 3e provided in the seal portion 3a of the driver 3 in a state in which the thick seal portion 5a is press-fitted, the inner peripheral portion 4d of the intermediate member 4 3a can be sealed in close contact with the sealing member 5a.
The seal portion 5a of the intermediate member 4 has an inner peripheral portion 4d and an outer peripheral portion 4e.
The intermediate member 4 can prevent the seal portion 5a of the seal member 5 from being detached or opened even when an external force is applied, so that the adhesion force of the seal member 5 can be further increased. become.

FIG. 8 shows that the cross section of the intermediate member 4 is formed in a substantially V shape, the inner inclined piece 4f is brought into close contact with the seal portion 3a of the driver 3, and the outer inclined piece 4g is sealed with the seal member 5 by the seal. The portion 5a is closely attached. In this embodiment, an inclined surface 3d is formed so as to be recessed toward the center of the driver 3 as the seal portion 3a of the driver 3 is higher, and a V-shaped intermediate member is formed on the inclined surface 3d. The seal 4a of the seal member 5 is fitted into the outer inclined piece 4g inclined in a direction away from the seal member 5 as it goes upward, so that the sealing is achieved. The portion 5a comes into close contact with the inclined piece 4g, so that the seal portion 5a is pushed outward, so that the tightening force in the circumferential direction of the seal member 5 increases, and the seal member 5
The sealing force can be further improved as a result.

FIG. 9 shows that the intermediate member 4 is formed in a cylindrical shape, and that the material of the intermediate member 4 is made of a waterproof material having air permeability, for example, a gas permeable material such as a sponge that can only pass gas to the outside. Intermediate member 4 having both waterproof and waterproof properties
Is configured. The width of the intermediate member 4 is formed to be shallower than the depth of the groove 3e provided in the seal portion 3a of the driver 3, and the seal member 5a of the seal member 5 is brought into close contact with the outer peripheral surface of the intermediate member 4. The portion 5a is also stored and held in the groove 3e. Here, a groove 3e provided in the seal portion 3a of the driver 3 so that a slight gap is formed above and below the intermediate member 4 and above and below the seal member 5.
The size of the intermediate member 4 and the seal portion 5a of the seal member 5 is set so that the gas inside the main body 2 can escape to the outside through the intermediate member 4 having air permeability. In addition, it is possible to prevent the pressure of the gas inside from rising, and it is extremely effective, for example, for taking measures against gas generated during charging.

FIG. 10 shows that a fitting concave portion 4h having a concave curved surface is provided on the outer peripheral portion of the intermediate member 4, and a convex curved fitting convex portion corresponding to the fitting concave portion 4h is formed in the sealing portion 5a of the sealing member 5. A portion 4i is provided, and the seal portion 5a of the seal member 5 is rotatably fitted to the intermediate member 4 in a state where the seal portion 5a does not come off. In this embodiment, a fitting projection 4i formed over the entire periphery of the seal portion 5a of the seal member 5 is rotatably fitted into a fitting recess 4h formed over the entire outer periphery of the intermediate member 4. Therefore, even if the seal member 5 is deformed due to an inadvertent external force or the reciprocating motion of the driver 3, the seal member 5 rotates to relieve those forces, and the fitting concave portion 4 h becomes a so-called anchor. It is possible to prevent the sealing member 5 from coming off by acting as a member, and to enhance the adhesion between the intermediate member 4 and the sealing member 5. In addition, a fitting convex portion 4i having a convex curved surface is provided on the outer peripheral portion of the intermediate member 4, and a fitting concave portion 4h having a concave curved surface corresponding to the fitting convex portion 4i is provided in the sealing portion 5a of the sealing member 5. Is also good.

FIG. 11 shows a tapered surface 4j inclined toward the driver 3 as it goes upward on the outer peripheral portion of the intermediate member 4, and the sealing portion 5a of the sealing member 5 is pressed into the tapered surface 4j from above. It is. In this embodiment, the intermediate member 4 is formed to have a substantially trapezoidal cross section, the inner peripheral surface thereof is in close contact with the driver 3, and the sealing member 5 is press-fitted from above to form a tapered surface on the outer peripheral surface of the intermediate member 4. The seal portion 5a of the seal member 5 can be brought into close contact with 4j. As described above, by pressing down the sealing portion 5a of the sealing member 5 from above, the adhesion to the tapered surface 4j of the intermediate member 4 increases,
Along with this, the sealing portion 5a of the sealing member 5 is pushed outward and the circumferential tightening force is increased.
The adhesion is further enhanced, and the sealing performance is greatly improved.

FIG. 12 shows a cylindrical intermediate member 4 having a rectangular cross-section and a plurality of ring-shaped projections protruding from the outer peripheral surface to form an uneven surface 4k. The sealing portion 5a is brought into close contact therewith. The width of the intermediate member 4 is the same as the width of the groove 3 provided in the seal 3a of the driver 3.
The sealing portion 5a of the sealing member 5 is also stored and held in the groove 3e in a state where the sealing portion 5a of the sealing member 5 is in close contact with the outer peripheral surface of the intermediate member 4. Thus, the sealing portion 5a of the seal member 5 is in close contact with the uneven surface 4k of the intermediate member 4, so that even a little tension of the seal member 5 can easily deform the plurality of ring-shaped projections forming the uneven surface 4k. When the ring-shaped projection further improves the surface pressure, the adhesion can be further increased.

In each of the above embodiments, the reciprocating electric shaver 1 having a two-head structure is exemplified, but the number and structure of the blade heads are not limited to the above.

[0027]

As described above, according to the first aspect of the present invention, the driving element for transmitting the amplitude to the inner blade by reciprocating drive by the motor is provided through the opening provided at the upper end of the main body. In a reciprocating electric shaver in which the gap between the driving element and the main body is covered with a sealing member that can be protruded and bendable in the vibration direction of the driving element, the seal is provided between the driving element and the sealing member. Because the intermediate member having a hardness between the hard body constituting the drive and the soft body constituting the seal member is hermetically interposed, the contact between the seal member and the intermediate member having a lower hardness than the driver makes the seal member The adhesion between the intermediate member and the adhesion between the intermediate member and the driver is improved. In other words, in the case where the adhesion is the same, the sealing performance is such that the area where the soft body and the soft body are crushed by the surface pressure is greater than the tightness between the hard body and the soft body. Intermediate member with lower hardness than driver) and soft body with lower hardness (seal member)
By bringing them into close contact with each other, the adhesion improves by that much,
As a result, the sealing property is improved, and as a result, for example, infiltration of water at the time of washing with water and intrusion of shavings can be reliably prevented.

According to the second aspect of the present invention, since the intermediate member according to the first aspect is integrally formed with the seal portion of the driver, in addition to the effect of the first aspect, the sealing property between the intermediate member and the driver is improved. It can surely be improved. According to a third aspect of the present invention, the intermediate member according to the first aspect includes a seal portion for isolating the seal portion of the driver with both a waterproof surface and a dustproof surface. In addition, the adhesive force between the intermediate member and the driver is further increased, so that it is possible to more reliably prevent water from entering during washing and entry of shavings.

According to a fourth aspect of the present invention, the intermediate member according to any one of the first to third aspects is formed in a substantially cylindrical shape along the outer periphery of the seal portion of the driver, and the outer periphery of the intermediate member is formed. 4. A flange portion for projecting a vibration between the driver and the seal member to be smooth at the portion.
In addition to the effect described in any one of the above, the seal member can be prevented from directly hitting the hard body (driver) by the collar portion, so that the seal member can be prevented from being broken by the vibration of the driver, The vibration of the driver can be made smooth, and the seal member can be easily fitted into the intermediate member.

According to a fifth aspect of the present invention, a cover is provided on the outer peripheral portion of the intermediate member according to any one of the first to third aspects to cover the thin portion of the seal member from above. In addition to the effects described in any one of claims 1 to 3, the cover portion can sufficiently protect the thin portion of the seal member from external force, for example, a water flow at the time of washing, or a force of a brush, and an intermediate member. By integrally projecting the cover part, the number of parts can be prevented from increasing, and since the cover part is supported on the driver side via the intermediate member, the load applied to the cover part is transmitted through the intermediate member. As a result, the protection of the thin portion of the seal member by the cover can be maintained for a long time.

According to a sixth aspect of the present invention, the cross-section of the intermediate member according to any one of the first to third aspects is formed in a substantially U-shape with a downward opening, and the inner peripheral portion thereof is formed with a driver. The seal portion of the seal member is sandwiched between the inner peripheral portion and the outer peripheral portion while being brought into close contact with each other. By tightening between the inner and outer peripheral parts of the member, the intermediate member can prevent the seal part of the seal member from opening even when external force (water flow during washing, force by brush, etc.) is applied. In addition, the sealing member can further increase the adhesion.

According to a seventh aspect of the present invention, the cross section of the intermediate member according to any one of the first to third aspects is formed in a substantially V-shape, and the inner inclined piece is closely attached to the seal portion of the driver. The sealing member of the seal member is in close contact with the outer inclined piece, and in addition to the effect according to any one of claims 1 to 3, it is in close contact with the outer inclined piece of the intermediate member. The sealing portion of the sealing member is pushed outward, so that the sealing force in the circumferential direction of the sealing member increases, and the sealing force with the sealing member further increases, so that the sealing performance is further improved. Things.

According to an eighth aspect of the present invention, there is provided an intermediate member or a seal member according to any one of the first to third aspects, wherein one of the intermediate member and the seal member is provided with a fitting concave portion having a concave curved surface, and the other is provided with the fitting recess. 4. A convex-shaped fitting projection corresponding to the recess is provided, and the sealing portion of the sealing member is rotatably fitted to the intermediate member in a state of being prevented from falling off.
In addition to the effects described in any one of the above, even if the seal member is deformed due to inadvertent external force or reciprocating motion of the driver, the seal member rotates to reduce those forces, and the fitting recess is formed. Can function as a so-called anchor, making it difficult for the seal member to come off, and can ensure smooth vibration while increasing the adhesion between the intermediate member and the seal member.

According to a ninth aspect of the present invention, a tapered surface inclined toward the driver is formed on the outer peripheral portion of the intermediate member according to any one of the first to third aspects so as to be higher, and the tapered surface is formed. The seal portion of the seal member is press-fitted from above into the seal member. Therefore, in addition to the effect according to any one of claims 1 to 3, the seal member is press-fitted from above into the tapered surface of the outer peripheral surface of the intermediate member. By bringing the seal portion of the seal member into close contact, the adhesive force with the tapered surface of the intermediate member increases, and accordingly, the seal portion of the seal member is pushed outward and the circumferential tightening force increases. Thereby, the adhesion is further enhanced, and the sealing performance can be further improved.

According to a tenth aspect of the present invention, an irregular surface is formed on the outer peripheral surface of the intermediate member according to any one of the first to third aspects, and the sealing portion of the seal member is brought into close contact with the irregular surface. In addition to the effects described in any one of claims 1 to 3, in addition to the slight stress of the seal member, the uneven surface is easily deformed, and the ring-shaped projection further improves the surface pressure, thereby increasing the adhesion. Is further enhanced.

According to the eleventh aspect of the present invention, the intermediate member according to any one of the first to tenth aspects is formed of a waterproof material having air permeability.
In addition to the effects described in any one of the above, the gas inside the main body can pass through the intermediate member having air permeability and can escape to the outside, and the pressure inside the gas can be prevented from rising, for example, generated during charging. This is extremely effective in reducing gas emissions.

[Brief description of the drawings]

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

FIG. 2 is a side sectional view of the reciprocating electric shaver according to the first embodiment;

FIG. 3 is a side sectional view of a main part of FIG. 2;

FIG. 4 is a front sectional view of the same.

FIG. 5 is a front sectional view of a main part of FIG. 4;

FIG. 6 is an explanatory diagram of another embodiment.

FIG. 7 is an explanatory diagram of still another embodiment.

FIG. 8 is an explanatory diagram of still another embodiment.

FIG. 9 is an explanatory diagram of still another embodiment.

FIG. 10 is an explanatory diagram of still another embodiment.

FIG. 11 is an explanatory diagram of still another embodiment.

FIG. 12 is an explanatory diagram of still another embodiment.

FIG. 13 is an explanatory diagram of still another embodiment.

[Description of Signs] 1 Reciprocating electric razor 2 Main body 3 Driver 3a Seal section 4 Intermediate member 4a Seal section 4b Flange section 4c Cover section 4d Inner peripheral section 4e Outer peripheral section 4f, 4g Inclined piece 4h Fitting convex section 4i Fitting Recess 4j Tapered surface 4k Uneven surface 5 Seal member 5a Seal portion 5b Thin portion A Vibration direction

Claims (11)

[Claims] 1. A sealing member which is reciprocally driven by a motor to transmit an amplitude to an inner blade from an opening provided at an upper end of a main body and which is flexible in a vibration direction of the driving element. In a reciprocating electric shaver that covers a gap between a driver and a main body, a seal portion between the driver and a seal member includes a hard member forming the driver and a soft member forming the seal member. A reciprocating electric shaver characterized by sealingly interposing an intermediate member having hardness. 2. The reciprocating electric shaver according to claim 1, wherein the intermediate member is formed integrally with the seal of the driver. 3. The reciprocating electric shaver according to claim 1, wherein the intermediate member has a seal portion for isolating the seal portion of the driver with both a waterproof surface and a dust-proof surface. 4. An intermediate member is formed in a substantially cylindrical shape along an outer periphery of a seal portion of a driver, and a flange portion for smoothing vibration between the driver and the seal member protrudes from an outer peripheral portion of the intermediate member. The reciprocating electric shaver according to any one of claims 1 to 3, wherein the electric shaver is provided. 5. The reciprocating electric shaver according to claim 1, wherein a cover portion that covers a thin portion of the seal member from above is projected from an outer peripheral portion of the intermediate member. 6. A cross section of the intermediate member is formed in a substantially U-shape having a downward opening, and its inner peripheral portion is brought into close contact with the driver, and the seal portion of the seal member is sandwiched between the inner peripheral portion and the outer peripheral portion. The reciprocating electric shaver according to any one of claims 1 to 3, wherein the electric shaver is configured as described above. 7. An intermediate member having a substantially V-shaped cross section, wherein an inner inclined piece is brought into close contact with a seal portion of a driver, and an outer inclined piece is brought into close contact with a seal portion of a seal member. The reciprocating electric shaver according to any one of claims 1 to 3, wherein 8. A seal for sealing a seal member, wherein one of an intermediate member and a seal member is provided with a concavely curved fitting concave portion, and the other is provided with a convexly curved fitting convex portion corresponding to the fitted concave portion. The reciprocating electric shaver according to any one of claims 1 to 3, wherein the portion is rotatably fitted to the intermediate member in a retaining state. 9. The method according to claim 1, wherein a tapered surface is formed in the outer peripheral portion of the intermediate member, the tapered surface being inclined toward the driver as it goes upward, and a seal portion of the seal member is pressed into the tapered surface from above. A reciprocating electric shaver according to any one of claims 1 to 3. 10. An uneven surface is formed on the outer peripheral surface of the intermediate member,
The reciprocating electric shaver according to any one of claims 1 to 3, wherein a seal portion of a seal member is adhered to the uneven surface. 11. The reciprocating electric shaver according to claim 1, wherein the intermediate member is formed of a waterproof material having air permeability.