JPH0236275B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application and purpose] This invention relates to an improvement of a reciprocating electric shaver,
In particular, we have improved the arrangement and storage of the sharpening unit, making it easier to use, and handling important aspects of electric shavers such as hair removal, outer blade replacement, and ease of attaching the outer blade holder. It provides the best of both worlds.

[Prior art and its problems]

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, 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 sliding 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 that requires only a storage recess to be formed in the side wall has been proposed.

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.

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.

That is, in the above-mentioned device, since the edge cutting unit 52 is directly attached to the outer cutter holder 51 in which the net-like outer cutter 50 is stretched in an arch shape, the edge cutting unit 52 is connected to the drive source on the main body side. The connecting protrusions etc. get in the way and are difficult to replace when the outer cutter 50 wears out and are difficult to replace.Moreover, the reticulated outer cutter 50 must be provided with a relief notch through which the connecting protrusion enters and exits. 50 is exclusive for this purpose and lacks versatility.

In particular, although short hair shavings tend to accumulate inside the outer blade holder 51, since the sharpening unit 52 is rotatably attached directly to the outer blade holder 51, the above-mentioned hair shavings can be easily deposited on this rotatable attachment part. easily enters, resulting in poor rotation or requiring a special wall-like seal structure to prevent intrusion.
The structure becomes complicated and cleaning of hair waste becomes troublesome.
In addition, the external shape was increased, which was still insufficient.

Furthermore, when the sharpening unit 52 is rotated and protruded, the hair storage section in which hair has accumulated is opened, so the hair is likely to blow out, staining the surrounding area, or causing problems in the provision of a protective wall for this purpose. .

Furthermore, in this case, since the outer blade holder 51 is formed symmetrically in the front and back, it is easy to install it incorrectly, and it is only possible to install it when the connecting protrusion of the sharpening unit 52 for connecting with the main blade drive source is in a certain direction. Since the outer cutter holder 51 has a connecting structure, it is inappropriate to attach the outer cutter holder 51 to the main body case 53 in the reverse direction, and this attachment direction makes it difficult to use.

[Structure and operation of the invention]

The present invention has been made in view of the various circumstances described above, and includes a vibrator storage section in the upper part of the main body case 1 for accommodating the vibrator 7 connected to the motor 2 and reciprocally driving the inner blade 6. 1A is formed with a shoulder K for placing the outer cutter holder 4 on its lower end periphery, and a sharpening unit 10 is mounted on one side wall of the vibrator storage section 1A of the main body case 1 in an activated state. A storage chamber 1 for rotatably supporting and storing the longitudinal direction between the storage state and the storage state.
3A are connected and formed, and a part of the vibrator is provided protruding from the top upper wall of the vibrator housing part 1A, and the inner blade body 6
The outer cutter holder 4 with which the outer cutter 3 with which the inner cutter body 6 slides is attached is fitted and placed on the shoulder part K while covering the vibrator storage part 1A,
The outer cutter holder 4 is cut out from below in correspondence with the outer wall 13b of the storage chamber so that the cutting edge of the sharpening unit 10 in the operating state is closer to the outer cutter 3 than the shoulder K.
By locating it to the side, the ease of use of the sharpening unit is improved, and it provides excellent handling, which is important for electric razors, such as hair removal, outer blade replacement, and ease of attaching the outer blade holder. can,
Moreover, the connection structure with the drive source can be simplified.

〔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). A vibrator housing part 1A is formed in the upper part for accommodating a vibrator 7 which is connected to the motor 2 and reciprocates the inner cutter body 6, and the lower edge of the vibrator housing part 1A is A shoulder portion K for mounting an outer cutter holder 4, which will be described later, is provided. An outer cutter holder 4 in which a net-like outer cutter 3 is stretched in an arch-shaped cross section is fitted into and covers the vibrator housing 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 a vibrator 7 protruding from the top upper wall of the vibrator storage portion 1A is connected to this holder 5. This vibrator 7 is housed in a first vibrating chamber 7A for an internal vibrator in the vibrator storage section 1A, and the rotational force of the motor 2 is applied by an eccentric cam 9 fixed to the rotating shaft 8 of the motor 2. This is transmitted to cause the inner blade body 6 to vibrate back and forth.

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, which serves as a storage chamber and is formed to be connected to one side wall of the vibrator storage section 1A that houses this 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, and when the sharpening unit 10 rotates and projects as shown in FIG. It is designed to vibrate in the a direction.

For this purpose, the main body case 1 has a vibrator storage section 1A.
The first storage chamber 7A for the internal vibrator and the second storage chamber 13A for the sharpening unit 10 are arranged adjacent to each other, and the engagement recess 18 formed in the vibrator 7 is used for the sharpening unit 10. A portion is extended to the second storage chamber 13A side.

In this case, the bottom wall 13a of the second storage chamber 13A is
The engagement recess 18, which is preferably located further below the lower surface 7a of the storage chamber 7A, is located above the bottom wall 13a, and in the protruding state of the edge unit 10 shown in FIG. It should be difficult to see directly from the side, and the edge unit 1
This makes it difficult for long hair etc. cut by 0 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 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.

Further, the second storage chamber 13A is formed in a continuous manner from one side wall of the transducer storage section 1A, and its outer wall 13b partially extends forward from the side wall of the transducer storage section 1A. The side corresponding to the storage chamber 13A in FIG. 1 or 2, that is, the front side 4b in this embodiment, is connected to the outer wall 1.
3b shape, cut out from below, rear side 4c
It is shorter and has an asymmetrical front-to-back shape.

Therefore, as shown in FIGS. 4 and 5,
Due to the asymmetrical shape of the outer cutter holder 4 due to this notch, if a wrong device is inserted into the top portion 1A, the front and back relationship can be easily confirmed when fitting it, and as in the case of a conventional outer cutter holder with a sharpening unit, There is no need to notice a mistake in mounting until the drive is started after complete fitting, and this can be avoided during fitting.

In addition, by notching the outer blade holder 4, the top 1
When fitting to A, the notch portion fits correspondingly to the outer wall 13b of the storage chamber, and the outer blade holder 4 can be fitted more firmly and reliably to the main body case 1,
Even if a strong external force is applied to the outer cutter holder 4 in the fitted state, it can be reliably received, and it is also possible to reduce chatter, rattling, etc. during driving.

Furthermore, the storage chamber 13A is connected to the side wall of the vibrator storage section 1A, and the outer blade holder 4 is notched in accordance with the storage chamber 13A, so that the cutting edge of the sharpening unit 10 can be attached to the main body case 1 in the protrusion operation state.
Since it is located closer to the outer cutter 3 side than the shoulder part K of the blade, it is also possible to use it for shaving and cutting sideburns more continuously.

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 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 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 of the invention〕

As described above, the present invention has a vibrator housing section 1A in which the vibrator 7 connected to the motor 2 and reciprocatingly drives the inner cutter body 6 is housed in the upper part of the main body case 1.
, and a shoulder K for placing the outer cutter holder 4 on its lower edge.
In addition to forming the main body case 1 with
A storage chamber 13A is connected to one side wall of the vibrator storage section 1A for supporting and storing the edge unit 10 rotatably about its longitudinal direction between the operating state and the storage state. A part of the vibrator 7 is provided protruding from the top upper wall of the vibrator housing part 1A, an inner blade body 6 is attached thereto, and an outer blade 3 with which the inner blade body 6 slides is stretched. The outer blade holder 4 is fitted and placed on the shoulder part K in a state covering the vibrator storage part 1A, and the outer blade holder 4 is cut out from below in correspondence with the outer wall 13b of the storage chamber. By arranging the edge of the sharpening unit 10 in the operating state so that it is located closer to the outer cutter 3 than the shoulder K, the outer cutter 3 and the sharpening unit 10 that are normally used can be placed close to each other. , it can be used continuously for shaving and cutting sideburns, and although the sharpening unit 10 is close to the outer cutter holder 4, it is independent so that the tensioning and replacement of the outer cutter 3 is easy. can be made easy,
It is also possible to simplify the defense structure for preventing the intrusion of hair debris.

Furthermore, the side 4b of the outer blade holder 4 corresponding to the storage chamber 13A is viewed from below in accordance with the shape of the storage outer wall 13b due to the storage chamber 13A being arranged in a continuous manner from one side wall of the transducer storage section 1A. The cutout not only allows the storage chamber 13A to be brought closer to the outer cutter 3, but also allows the outer cutter holder 4 to be shaped asymmetrically in the front and back, making it easy to confirm the direction of fitting onto the top. This can be easily done, and it is possible to prevent the conventional case where incorrect installation is discovered only after use after installation. Also, when fitting the outer blade holder 4 into the vibrator storage section 1A, the outer wall of the storage chamber The notch portion fits correspondingly into the main body case 1, and the outer cutter holder 4 can be more firmly and reliably fitted to the main body case 1, and chatter and wobbling during driving can be reduced.

[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 cutter holder of the same embodiment in a state in which it is attached. FIG. 4 shows it before attachment, FIG. 5 shows it after attachment, and 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... Vibrator storage section, 3
...Outer blade, 4...Outer blade holder, 6...Inner blade body, 7
... Vibrator, 10 ... Kiwazori unit, 13A
...Storage room, 13b...Outer wall, K...Shoulder.

Claims (1)

[Claims] 1 In the upper part of the main body case 1, there is a vibrator storage part 1A for housing and arranging the vibrator 7 connected to the motor 2 and reciprocally driving the inner cutter body 6, and on the lower edge of the vibrator storage part 1A, a shoulder for placing the outer cutter holder 4 is provided. The above-mentioned vibrator housing section 1A of the main body case 1 is
A storage chamber 13A is provided on one side wall for supporting and storing the edge unit 10 so as to be rotatable about its longitudinal direction between an operating state and a stored state.
A part of the vibrator 7 is provided to protrude from the top upper wall of the vibrator storage section 1A, and an inner blade body 6 is attached thereto, and an outer blade 3 with which the inner blade body 6 slides is formed. The stretched outer blade holder 4 is fitted and placed on the shoulder part K in a state covering the vibrator housing part 1A, and the outer blade holder 4 is placed in correspondence with the outer wall 13b of the storage chamber from below. A reciprocating electric shaver characterized by having a notch so that the cutting edge of the sharpening unit 10 in an operating state is located closer to the outer cutter 3 than the shoulder K.