JPH0318913B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an improvement of a reciprocating electric shaver,
In particular, we have improved the placement and storage of the sharpening unit, which increases the operability of the sharpening unit, and also prevents the long hair cut by the sharpening unit from entering the driving part. This provides a structure that can reliably transmit information.

[Conventional technology]

Generally, this type of electric razor is equipped with a shaving mechanism for long hair such as sideburns, but the conventional shaving mechanism is one that slides in and out using a guide means installed inside the main body case, and when not in use. This was done in consideration of the ease of storage and the increase in the amount of protrusion to the edge of the cutting edge during use. However, in this case, the inside of the main case, especially the sliding direction, is perpendicular to the axial direction of the main case, so the storage part of the edge mechanism divides the inside of the main case, making the mechanism complicated. It was difficult to place.

In recent years, in order to further increase the amount of protrusion and improve the ease of placement, the edge mechanism has been made into a unit, and this unit is supported rotatably between the operating state and the stored state. A structure has been proposed in which only a storage recess is formed in the side wall.

For example, this device is described in British Patent No. 827768, but although it is easy to connect with the drive mechanism inside the main body case, it does not have a main blade for shaving and a sharpening unit for sideburns. Since the grips are located far apart, it is necessary to re-grip the grip when using the grip, which is not preferable.

Therefore, as described in Swiss Patent No. 480922 and U.S. Patent No. 3844035 shown in FIG. It has been proposed that the

According to this device, the main blade for shaving and the shaving unit 52 can be brought close to each other, so there is no need to regrip the device, and it can be used continuously, improving usability.

[Problem that the invention seeks to solve]

However, improvements to this type of electric shaver for actual use are still insufficient, and consideration must also be given to the structure of hair removal, replacement of the outer blade, ease of mounting of the outer blade holder, etc.

However, in the above-mentioned device, since the edge cutting unit 52 is attached to the outer cutter holder 51 in which the reticulated outer cutter 50 is extended in an arch shape, the edge cutting unit 52 has a connecting protrusion for connecting with a drive source, etc. However, when the outer cutter 50 wears out and is replaced, it gets in the way and is difficult to replace.Moreover, the reticulated outer cutter 50 must be provided with a relief notch through which the connecting protrusion enters and exits.
The outer cutter 50 is made exclusively for this purpose and lacks versatility.

In particular, although short hair debris tends to accumulate inside the outer cutter holder 51, since the edge cutting unit 52 is rotatably attached to the outer cutter holder 51,
The hair debris tends to get into this rotating attachment part,
This may result in poor rotation or the need for a special wall-like seal structure to prevent intrusion, which complicates the structure and makes it troublesome to clean the lint, and also increases the external shape, which is still a problem. It was sufficient.

Moreover, when the sharpening unit 52 is rotated and protruded, the storage section is opened, and the upper part of the hair is likely to blow out, staining the surrounding area, or there is a problem in the provision of a protective wall for this purpose.

[Means for solving problems]

This invention was made in view of the various circumstances mentioned above, and includes an eccentric cam 9 mounted on the rotating shaft 8 of the motor 2 housed in the main body case 1.
and the vibrator 7 that converts the rotation of the eccentric cam 9 into reciprocating vibration.
The inner blade is stored in the first storage chamber 7A for a vibrator inside the blade A, and the tip 7B of the vibrator 7 is protruded into the inner blade storage chamber 6A on the upper wall side of the top part 1A, so that the inner blade comes into sliding contact with the outer blade 3. The second storage chamber 13A is arranged adjacent to the first storage chamber 7A in a direction orthogonal to the protruding direction of the vibrator 7, and the second storage chamber 13A is in a reciprocating state and in a protruding dynamic state. It houses the edge unit 10 that is rotatably supported between the two states, and
The transducer 7 is provided with a transmission engaging part 18 that engages with the sharpening unit 10 side and transmits the driving force when the sharpening unit 10 is in the above-mentioned operating state. By setting the engagement position with the unit 10 on substantially the same plane as the rotation plane P of the eccentric cam 9 and in the second storage chamber 13A, the vibrator, which is the drive source of the inner cutter, and the skidding unit can be brought close to each other. This simplifies the transmission structure from the transducer to the eccentric cam, and ensures that the driving force of the motor is transmitted reliably.In addition, the long hair cut by the transducer unit is moved to the connecting position between the transducer and the eccentric cam. It is possible to prevent intrusion.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 are cutaway side views showing an example of a reciprocating electric shaver according to the present invention. In the figures, reference numeral 1 denotes a box-shaped main body case that houses a motor 2 and a battery (not shown). An outer cutter holder 4 in which a reticulated outer cutter 3 is stretched in an arch-shaped cross section is fitted and covered by the top portion 1A. Reference numeral 5 denotes an inner cutter holder holding an inner cutter body 6 that slides on the inner surface of the outer cutter 3, and this holder 5 has a tip of a vibrator 7 protruding from an inner cutter body storage chamber 6A on the upper wall side of the top portion 1A. 7A is connected, and this vibrator 7 is stored in the first internal vibrator storage chamber 7A of the top part 1A, and the rotational force of the motor 2 is transferred to an eccentric cam fixed to the rotating shaft 8 of this motor 2. The inner blade body 6 is vibrated reciprocatingly by the vibration 9.

10 is an edge unit driven by the vibrator 7, and as shown in FIG.
The blade base 11 constituting a part of the main body is pivoted to the inner wall of the side wall window 13 of the bookstand case 1 using a longitudinal hinge protrusion 12 as a fulcrum, so that it can be in the protruding operating state shown in FIG. It rotates between the storage state shown in the figure. The window portion 13 is connected to a second storage chamber 13A for storing the edge unit.

Further, a fixed blade 15 is fixed to the lower surface of the blade stand 11 by a crimping rib 14 protruding from the lower surface. Reference numeral 16 denotes a movable blade that is pressed against the lower surface of the fixed blade 15. As shown in FIG. It is configured to be engaged with the transmission engagement portion 18 and vibrated in the direction of arrow a. In this case, the engagement position between the coupling portion 17 on the edge unit side and the transmission engaging portion 18 is approximately on the same plane as the rotational plane P where the eccentric cam 9 engages with the vibrator 7 and transmits rotational force. Therefore, the direction in which the eccentric cam 9 reciprocates the vibrator 7 and the direction in which the engaging portion 18 of the vibrator 7 reciprocates the sliding unit 10 coincide with each other. As a result, Kiwazori Unit 1
Even if the oscillator 7 gets caught in a large amount of hair and becomes under a heavy load, the vibrator 7 can be prevented from tilting to the lifted state, and if it is tilted, it will prevent the vibration noise of the vibrator 7 and the eccentric cam 9, and the inner and outer cutters. It is possible to prevent uneven hitting.

In addition, the main body case 1 has a first storage chamber 7A for a vibrator.
The second storage chamber 13A for the shifting unit 10 is arranged adjacent to the direction perpendicular to the protruding direction of the vibrator 7, and the transmission engaging portion 18
A portion thereof is extended to the side of the second storage chamber 13A for 0, so that even if hair waste enters this engaging portion 18, it can be easily removed.

In this case, the bottom wall 13a of the second storage chamber 13A is
The storage chamber 7A is located further below the lower surface 7a of the storage chamber 7A, so that the connection position between the vibrator 7 and the eccentric cam 9 is shifted from the bottom wall 13a to the upper wall side of the top portion 1A, and is positioned above the bottom wall 13a. will be located, the second
In the protruding state of the edge cutting unit 10 shown in the figure, it is difficult to see directly from the front, and long hair etc. cut by the edge cutting unit 10 is difficult to enter the vibrator 7 side. In the stored state shown in FIG. 1, there is no problem because the window portion 13 is covered by the blade stand 11.

In this way, the second storage chamber 13A is the first storage chamber 7.
To simplify the drive transmission mechanism adjacent to A,
They are arranged to be deviated upward so as to protrude toward the top portion 1A, and both can be used properly without having to re-grip more than necessary.

In addition, in a normal shaving condition, hair scraps shaved by the outer cutter 3 and the inner cutter body 6 blow out from the outer cutter 3 or try to enter the second storage chamber 13A through the outer surface 4A of the outer cutter holder 4. However, if the outer wall 13b of the second storage chamber 13A extends forward from the outer surface 4A of the outer blade holder 4, hair debris is prevented from accumulating on this outer wall 13b, and the hair can be protected from blowing out hair debris.

In addition, since the second storage chamber 13A is deviated toward the top 1A side and the outer wall 13b is extended forward, the outer cutter holder 4 is moved to the front side 4b in FIG.
is cut out from below corresponding to the shape of the outer wall 13b, and is formed shorter than the rear side 4c, so that the front and back shapes are asymmetrical.

Therefore, as shown in FIGS. 4 and 5, the asymmetrical shape of the outer cutter holder 4 due to this notch allows for easy confirmation of the front-back relationship when fitting the outer cutter holder 4 to the top 1A. Unlike in the case of a device equipped with a sharpening unit, it is not possible to notice incorrect installation until it is driven after complete fitting, and this can be avoided during fitting.

The front end inner wall 13c of the second storage chamber 13A is tapered toward the outward lower end, which not only expands the rotation range of the rotating edge unit 10 but also extends the range of rotation of the rotating edge unit 10. When the unit is in operation, the contact area with the blade stand 11 can be reduced to reduce abnormal noise caused by micro-vibration friction caused by reciprocating motion.

Reference numerals 19 and 19 indicate guide pins that are protruded from the lower surface of the blade stand 11 and guide the vibrations of the movable blade 16. It passes through the guide top hole 21. A rotating roller 22 with a flange 22a is fitted into each pin 19, and this roller 2
2 is fitted into each guide slot 21 of the movable blade 16. 23, 23 is a spring for movable blade crimping, 24
is a spring receiving member, and this member 24 is fitted to the blade stand 11 by locking the locking protrusions 25, 25 at both ends into the locking grooves 26, 26 of the blade stand 11. Each spring 23 is stretched between each collar portion 22a of the rotating roller 22 and the spring receiving member 24.

In the above configuration, as shown in FIG. 6, when the movable blade 16 shears the hair M with its cutting edge 16a, it retreats due to the shearing resistance, and the inner wall 21a of the guide slot 21 is brought into contact with the front surface of the guide pin 19. However, since the rotating roller ₂₂ is fitted to the pin ₁₉ , the resultant force is F
Since the rotating roller 22 that receives the vibration rotates slightly clockwise on the front surface of the guide pin 19, the movable blade 16 can move smoothly in the vibration direction a, and therefore the generation of noise is extremely reduced.

〔effect〕

As described above, the present invention includes an eccentric cam 9 mounted on the rotating shaft 8 of the motor 2 housed in the main body case 1, and a vibrator 7 that converts the rotation of the eccentric cam 9 into reciprocating vibration. The inner cutter body 6 is stored in the first storage chamber 7A for the vibrator inside the top part 1A of the main body case in a connected state, and is protruded from the upper wall of the top part 1A of the tip end of the vibrator 7 and comes into sliding contact with the outer cutter 3. By reciprocating the vibrator 7 and arranging the second storage chamber 13A adjacent to the first storage chamber 7A in a direction orthogonal to the protruding direction of the vibrator 7, parts storage performance is improved. The structure can be simplified by bringing the transmission mechanism between the vibrator 7 to be converted and the offset unit close to each other, and the transducer 7 is supported in the second storage chamber 13A so as to be rotatable between the stored state and the protruding operating state. In addition to housing the edge sliding unit 10, the transducer 7 is provided with a transmission engaging portion 18 that engages with the edge sliding unit 10 side and transmits the driving force when the edge sliding unit 10 is in the above-mentioned operating state,
By setting the engagement position between the transmission engaging portion 18 and the shifting unit 10 to be substantially the same plane as the rotation plane P of the eccentric cam 9 and in the second storage chamber 13A, the eccentric cam 9 is aligned with the vibrator 7. The direction in which the engaging portion 18 of the vibrator 7 reciprocates and the direction in which the engaging portion 18 of the vibrator 7 drives the sharpening unit 10 back and forth coincides with the direction in which the sharpening unit 10 catches a large amount of hair. It is possible to prevent the vibrator 7 from tilting to a lifted state even under a heavy load condition, and to prevent the knocking noise between the vibrator 7 and the eccentric cam 9 and uneven contact between the inner and outer cutters when the vibrator 7 is tilted. can.

[Brief explanation of drawings]

1 and 2 are cutaway side views showing an example of a reciprocating electric shaver according to the present invention. FIG. 1 shows the razor unit in the stored state, FIG. 2 shows it in the operating state, and FIG. 4 and 5 are exploded perspective views of the sharpening unit of the same electric shaver, and show the outer blade holder of the same embodiment installed, with FIG. 4 showing before installation, and FIG. 5 after installation. FIG. 6 is an explanatory diagram of the operation of the sharpening unit, and FIG. 7 is an explanatory diagram of a conventional example. 1... Main body case, 1A... Top, 2... Motor, 3... Outer blade, 6... Inner blade, 7... Vibrator,
7A...First storage chamber, 8...Rotating shaft, 9...Eccentric cam, 10...Edge unit, 13A...Second storage chamber, 13a...Bottom wall, 18...Transmission engagement part , P... rotation plane.

Claims (1)

[Claims] 1 An eccentric cam 9 is attached to the rotating shaft 8 of the motor 2 housed in the main body case 1, and the eccentric cam 9 and the vibrator 7 that converts the rotation of the eccentric cam 9 into reciprocating vibration are connected. It is stored in the first storage chamber 7A for the vibrator inside the top part 1A of the main body case, and the tip 7B of the vibrator 7 is protruded into the inner blade storage chamber 6A on the upper wall side of the top part 1A so that it slides against the outer blade 3. The inner blade body 6 in contact with the blade body 6 is reciprocated, and a second storage chamber 13A is arranged adjacent to the first storage chamber 7A in a direction orthogonal to the protruding direction of the vibrator 7. It accommodates the edge sliding unit 10 which is rotatably supported between the protruding and operating states, and engages with the edge sliding unit 10 side in the above-mentioned operating state of the edge sliding unit 10 in the vibrator 7. A transmission engagement portion 18 for transmitting the driving force is provided, and the engagement position between the transmission engagement portion 18 and the shifting unit 10 is substantially the same as the rotation plane P of the eccentric cam 9 and is arranged in a second storage position. A reciprocating electric shaver set in room 13A.