JPH0436714B2 - - 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, increasing the usability of the sharpening unit, and providing a structure that prevents long hair cut by the main blade and sharpening unit from entering the drive part. It is something to do.

[Conventional technology]

Generally, this type of electric razor is equipped with a shaving mechanism for hair styling such as sideburns, but the conventional shaving mechanism is a device 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, with this type, it is easy to bring hair waste into the inside of the main case when it is slid and stored, and especially since the sliding direction is perpendicular to the axial direction of the main case, the storage part of the scratching mechanism does not move inside the main case. This resulted in a complicated mechanism that was difficult to assemble and arrange. 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, in the device described in British Patent No. 827768, although the connection with the drive mechanism inside the main body case is easy, the main blade for shaving and the edge shaving unit for sideburns are located at separate locations. Therefore, it is necessary to re-grip it when using it, which is not desirable.

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 stretched 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.Furthermore, it is necessary to provide a relief notch through which the connecting protrusion of the net-like outer cutter 50 enters and exits, and the outer cutter 50 is designed specifically for this purpose. It 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 easily enters this rotating attachment part,
This may result in poor rotation, or a special wall-like seal structure is required 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.

Furthermore, when the sharpening unit 52 is rotated and protruded, the storage section is opened, so that the short hair particles are likely to blow out, staining the surrounding area, or creating a barrier for this purpose.

Furthermore, in this case, since the connecting protrusion of the sharpening unit 52 for connecting with the main blade drive source is connected only when it is in a certain direction, the outer blade holder 51 is not connected to the main blade holder 53. It is inappropriate to attach the device with the front and back facing backwards, and this orientation makes it difficult to use.

[Means for solving problems]

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 to each other in the main body. The vibrator 7 is stored in the first storage chamber 7A for the vibrator inside the case top 1A, 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 1A to make sliding contact with the outer blade 3. The inner blade body 6 is reciprocally driven to be adjacent to the first storage chamber 7A in a direction orthogonal to the protruding direction of the vibrator 7, and the top portion 1 is
A second storage chamber 13A is arranged inside A, and the second storage chamber 13A has two states: a stored state in which the transmission with the vibrator 7 is released and it does not operate, and an operating state in which it protrudes and engages with the vibrator 7 and operates. The cutting edge of the cutting unit 10 is rotatably supported between the storage chambers 13A and 13A. By setting the connecting position of the eccentric cam 9 and the vibrator 7 of the chamber 7A to be offset from the bottom wall 13a of the second storage chamber 13A to the upper wall side of the top portion 1A, the inner blade storage chamber and the vibrator can be connected to each other. The first storage chamber for the cutting unit and the second storage chamber for the sharpening unit are formed independently, and each storage chamber is laid out orthogonally to the first storage chamber, so that the inner blade storage chamber It is possible to reduce the intrusion of short hair debris in the second storage chamber and long hair debris in the second storage chamber into other chambers, and the vibrator, which is the drive source of the inner blade, is placed close to the swivel unit to keep it away from the vibrator. This simplifies the transmission structure to the shearing unit, and also enables reliable transmission of driving force to the inner blade body and the shearing unit.

〔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, 1 is a nearly box-shaped main body case that houses a motor 2 and a battery (not shown). An outer cutter holder 4 in which a net-like 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 is located in an inner cutter body storage chamber 6 on the upper wall side of the top portion 1A.
The vibrator 7 is connected to the tip 7B of the vibrator 7 protruding from the top portion A, and the vibrator 7 is housed in the first vibrator storage chamber 7A inside the top portion 1A.
The rotational force is transmitted by an eccentric cam 9 fixed to the rotating shaft 8 of the motor 2, thereby causing the inner cutter body 6 to reciprocate and vibrate.

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 case 1 is pivoted on the inner wall of the side wall window 13 of the main body 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 a transmission engaging portion 18 and vibrated in the direction of arrow a.

In addition, in the stored state, the transmission due to the engagement between the connecting portion 17 and the transmission engaging portion 18 is released, and the movable blade 16
is not operated, and the cutting edge of the movable blade 16 faces toward the bottom wall 13a of the second storage chamber.

For this purpose, the main body case 1 includes a first storage chamber 7A for the vibrator and a second storage chamber 1 for the offset unit 10.
3A are disposed adjacent to each other in a direction orthogonal to the protruding direction of the vibrator 7, and the transmission engaging portion 18 is partially protruded toward the second storage chamber 13A for the sharply moving unit 10, and Even if hair debris enters the joining part 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 cutting unit 10 shown in the figure, it is difficult to see directly from the front, and since the cutting unit 10 is originally used for trimming long hair, the cut hair waste is long and heavy. , compared to the short hair cut by the main inner blade,
The long hairs are difficult to penetrate into the fine details, and therefore the proportion of long hairs accumulated on the bottom wall 13a entering the eccentric cam 9 side located above the bottom wall 13a is extremely low. The structure is such that it is difficult for the particles 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.

Inner blade body storage chamber 6 where short hair debris accumulates like this
A is separated from the top part 1A, and the long hair debris deposited in the second storage chamber 13A is difficult to move and invade other parts due to the nature of hair debris.
Since the second storage chamber 13A is adjacent to the first storage chamber 7A and the drive transmission mechanism can be simplified,
It can be disposed upwardly so as to protrude toward the top portion 1A, and the two 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,
Due to the asymmetrical shape of the outer cutter holder 4 created by this notch, it is possible to easily check the front-to-back relationship when fitting the outer cutter holder 4 to the top portion 1A, and it is possible to completely fit the outer cutter holder 4 as in the case of a conventional outer cutter holder equipped with a sharpening unit. There is no need to notice the incorrect installation until the rear drive is performed, and this can be avoided when 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 designate guide pins that protrude from the lower surface of the blade stand 11 and guide vibrations of the rotary blade 16, and each pin 19 is formed in each hole 20 formed in the fixed blade 15 and in the movable blade 16. It passes through each guide slot 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 rotating 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, when the movable blade 16 shears the hair M with its cutting edge 16a as shown in FIG. 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〕

In this invention, an eccentric cam 9 is attached to a rotating shaft 8 of a motor 2 housed in a main body case 1, and this eccentric cam 9 is connected to a vibrator 7 that converts the rotation of the eccentric cam 9 into reciprocating vibration. These are stored in the first storage chamber 7A for the vibrator inside the top part 1A of the main body case, and the outer blade 3 is provided with the tip 7B of the vibrator 7 protruding into the inner blade storage chamber 6A on the upper wall side of the top part 1A. A second storage chamber 13A is arranged inside the top portion 1A adjacent to the first storage chamber 7 in a direction orthogonal to the protruding direction of the vibrator 7, and
In the second storage chamber 13A, there is a ridge that is rotatably supported between a stored state in which transmission with the vibrator 7 is released and is not activated, and an activated state in which it protrudes and engages with the vibrator 7 and is activated. In addition to storing the unit 10, the cutting edge of the sharpening unit 10 faces toward the bottom wall 13a of the second storage chamber 13A in the stored state, and connects the vibrator 7 and the eccentric cam 9 of the first storage chamber 7A. By setting the position deviated from the bottom wall 13a of the second storage chamber 13A to the upper wall side of the top portion 1A,
When the sharpening unit is in the retracted or protruding state, the long hair cut by the sharpening unit directly enters the connection position between the vibrator 7 and the eccentric cam 9, and obstructs the function of converting it into reciprocating vibration. It is possible to prevent this from happening. Moreover, this allows the transmission mechanism between the transducer 7, whose reciprocating vibration is converted by the eccentric cam 9, and the shifting unit to be brought sufficiently close together, which not only simplifies the structure, but also allows the shifting unit 10 to be connected to the main external It is arranged close to the blade 3 side and can be used continuously without having to pick it up again, making it possible to provide an easy-to-use item.

In particular, when the edge cutting unit 10 is stored, the edge cutting unit 10 is in an inactive state, and its cutting edge is facing the bottom wall 13a of the second storage chamber 13A. Even if the long hair remains attached and is stored, the attached hair will not be shaken off, and even if it is shaken off, the long hair will only fall onto the bottom wall 13a, and this bottom wall 13a is located below the connection position between the vibrator 7 and the eccentric cam 9, so that long and heavy hair particles that have fallen onto the bottom wall 13a are prevented from entering.
The dustproof structure can be simplified.

[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...Body case, 1A...Top, 2...Motor, 3...Outer blade, 6...Inner blade, 6A...Inner blade storage chamber, 7...Obductor, 7B...Tip of vibrator ,7
A...First storage chamber, 8...Rotating shaft, 9...Eccentric cam, 10...Edge unit, 13A...Storage chamber, 13a...Bottom wall.

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 apex 1 is moved adjacent to the first storage chamber 7A in a direction orthogonal to the protruding direction of the vibrator 7 by reciprocating the inner blade 6 in contact with the vibrator 7.
A second storage chamber 13A is arranged inside A, and the second storage chamber 13A has two states: a stored state in which the transmission with the vibrator 7 is released and it does not operate, and an operating state in which it protrudes and engages with the vibrator 7 and operates. The cutting edge of the cutting unit 10 is rotatably supported between the storage chambers 13A and 13A. When the unit 10 is in the operating state, the edge unit 10 communicates between the first storage chamber 7A and the second storage chamber 13A so that the vibrator 7 can be connected to the vibrator 7 in the first storage chamber 7A. The connecting position of the eccentric cam 9 and the top 1A of the second storage chamber 13A is set from the bottom wall 13a of the second storage chamber 13A.
A reciprocating electric shaver set with an offset toward the upper wall.