JPS60241485A - Reciprocal electric razor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] This invention relates to an improvement of a reciprocating electric shaver, and in particular improves the arrangement and storage of the razor unit, improves the usability of the razor unit, and improves the ease of use of the razor unit. This provides a structure that prevents the long hairs cut by the actuator from entering the driving part.

Generally, this type of electric razor is equipped with a razor mechanism for hair styling such as sideburns, but the conventional razor mechanism is not used because it slides in and out using a guide means installed inside the main body case. This was done in consideration of the ease of storage during use and the increased 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. The arrangement was difficult.

In recent years, in order to further increase the amount of protrusion and improve 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, as described in British Patent Nos. 827 and 768, although the connection with the drive mechanism inside the main body case is easy, the main blade for shaving and the edge for sideburns are Since the gripping unit is located at a separate location, it is necessary to re-grip the device during use, which is not desirable.

Therefore, an outer cutter holder 5 for the main cutter 50 as described in Swiss Patent No. 480,922 and U.S. Patent No. 3,844,035 shown in FIG.
It has been proposed that an edge reunit 52 is rotatably disposed directly on 1.

According to this device, since the main blade for shaving and the shaving unit 52 can be brought close to each other, there is no need to re-grip 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.

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 connecting protrusion of the edge cutting unit 52 for connecting with the 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, the reticulated outer cutter 50 must be provided with a relief notch through which the connecting protrusion 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 sharpening unit 52 is rotatably attached to the outer cutter holder 51, this rotational attachment is not suitable for removing the above-mentioned hairs. It is easy for debris to enter, resulting in poor rotation or requiring a special seal structure in the form of a wall to prevent the intrusion, making the structure complex and cleaning the debris troublesome, and increasing the external shape. As a result, it was still inadequate.

Furthermore, when the sharpening unit 52 is rotated and protruded, the storage section is opened, so that the hair particles are likely to blow out, staining the surrounding area, or creating a protective wall 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 the connecting protrusion is in a certain direction, the main blade case 53
On the other hand, it is inappropriate to mount the outer cutter holder 51 with the front and back reversed, and this mounting directionality makes it difficult to use.

This invention was made in view of the various circumstances mentioned above.
An eccentric cam 9 is attached to the rotating shaft 8 of the motor 2 housed in the main body case l, 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 at the top of the main body case. The vibrator 7 is stored in the first storage chamber 7A for the vibrator inside the IA, and the inner cutter body 6, which has the tip of the vibrator 7 protruding from the top wall of the top IA and comes into sliding contact with the outer cutter 3, is reciprocated, and this vibration A second storage chamber 138 is arranged adjacent to the first storage chamber 7A in a direction perpendicular to the protruding direction of the child 7, and the second storage chamber 13A is rotatable between a storage state and a protruding operating state. The edge unit 10, which is supported by By arranging the vibrator, which is the drive source for the inner cutter, and the Kiwazo Unit 1 in close proximity, the transmission structure from the vibrator to the Kiwazo Unit is simplified. This can prevent the long hair to be cut from entering the connection position between the vibrator and the eccentric cam.

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 IA. 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. A vibrator 7 protruding from the earthen wall of the top portion IA is connected to this holder 5. is housed in the first storage chamber 7A for internal vibrator in the top part IA, and the rotational force of the motor 2 is transmitted by an eccentric cam 9 fixed to the rotating shaft 8 of this motor 2 to drive the inner blade 6. It is designed to vibrate back and forth.

Reference numeral 10 denotes a sharpening unit driven by a vibrator 7, and as shown in FIG. 3, a blade base 11 forming a part of the sharpening unit IO is mounted on a longitudinal hinge protrusion 12, etc., which is used as a fulcrum to move the main body case. It is pivoted on the inner wall of the side wall window 13 of No. 1, and rotates between the protruding operating state shown in No. 21 and the retracted state shown in FIG. The window portion 13 is connected to a second storage chamber 13A for storing 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. 16 is a movable blade that is pressed against the F side of the fixed blade 15;
As shown in the figure, when the sharpening unit 1O rotates and projects, it is locked in an engagement recess 18 formed in the vibrator 7 and is vibrated in the direction of arrow a.

For this purpose, in the main body case 1, a first storage chamber 7A for vibration damping and a second storage chamber 13A for the horizontal running note 10 are arranged adjacent to each other in a direction orthogonal to the protruding direction of the vibrator 7. 18 is the second storage chamber 13A for the Kiwazori unit 10
A portion is extended to the side.

In this case, the bottom wall 13a of the second storage chamber 13A is the first storage chamber 7.
Therefore, the connection position between the vibrator 7 and the eccentric cam 9 is shifted from the bottom wall 13a toward the upper wall of the m section IA, and is located above the bottom wall 13a. Therefore, in the protruding state of the edge unit 10 shown in FIG. 2, it is made so that it is difficult to see directly from the front, and it is difficult for long hair etc. cut by the edge unit 10 to enter the vibrator 7 side. ing. 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 disposed adjacent to the first storage chamber 7A and is offset upwardly so as to protrude toward the top IA side in order to simplify the drive transmission mechanism, and is also provided with You can use both properly without having to re-grip.

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, as the second storage chamber 13A shifts toward the top IA side and the outer wall 13b extends forward, the outer blade holder 4 moves the front side 4b in FIG. 1 downward in accordance with the shape of the outer wall 13b. It is cut out from the rear side 4C and is formed shorter than the rear side 4C, so that the front and rear shapes are asymmetrical.

Therefore, as shown in FIGS. 4 and 5, the outer cutter boulder 4 has an asymmetrical shape due to this notch, and when it is fitted to the top IA, the front and back relationship can be easily confirmed, which is superior to the conventional outer cutter holder. Unlike the case where a sliding unit is provided, it is not possible to notice incorrect mounting until the drive is started 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
In the operating state shown in FIG. 2, the contact portion with the blade base 11 can be reduced to reduce abnormal noise caused by slight vibration friction caused by reciprocating motion.

Reference numeral 19.19 is a guide bin that is protruded from the lower surface of the blade stand 11 and guides the vibration of the movable blade 16. It passes through the guide slot 21. A rotary roller 22 having a flange 22a is fitted into each bottle 19, and the roller 22 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 has locking protrusions 2 on both ends.
5.25 is fitted to the blade stand 11 by locking them to the locks 126, 26 of the blade stand 11, and each of the springs 2
3 indicates each collar portion 22a of the rotating roller 22 and the spring receiving member 2.
It is stretched between 4 and 4.

In the above configuration, as shown in FIG. 6, when the movable blade 16 shears the bristles M with its cutting edge 16a, it retreats due to the shearing resistance, and the inner wall 21a of the guide elongated hole 21 moves toward the guide pin 19.
The pin 19 is about to be pressed against the front surface by the resultant force F of the force F in the vibration direction a and the force F2 in the receding direction, but since the rotating roller 22 is fitted to the pin 19, Since the rotary roller 22 receiving the resultant force F slightly rotates 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 low. It becomes less.

In this invention, as described above, an eccentric cam 9 is attached to the rotating shaft 8 of the motor 2 housed in the main body case 1, and an oscillator that converts the rotation of the eccentric cam 9 into forward (summer vibration) 7 is connected and stored in the first storage chamber 7A for the vibrator inside the top IA of the main body case, and the tip of the vibrator 7 is protruded from the earthen wall of the top IA to make sliding contact with the outer blade 3. By reciprocating the blade body 6 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, the ability to store parts is improved, and especially the eccentric cam 9 The structure can be simplified by bringing the transmission mechanism between the transducer 7, which undergoes reciprocating vibration conversion, and the lunisoto very close together, and
The second storage chamber 13A stores the Kiwazo Runinote 10, which is supported so as to be rotatable between the storage state and the protruding operating state, and the vibrator 7 and the eccentric cam 9 in the first storage chamber 7A.
By setting the connection position with the bottom wall 13a of the second storage chamber 13A to be offset to the upper wall side of the top part IA, the long hair cut by the edge unit is directly connected to the vibrator 7 and the eccentric cam. It is possible to prevent the function of entering the connection position with 9 and converting into reciprocating vibration from being inhibited.

[Brief explanation of the drawing]

1 and 2 are cutaway side views showing an example of the reciprocating electric shaver according to the present invention. FIG. 1 shows the razor unit in the stored state, FIG. 2 shows the operating state, and FIG. 3 shows the shaver in the operating state. 4 and 5 are exploded perspective views of the edge repair unit of the same electric shaver, and show the state in which the outer blade holder of the same embodiment is attached,
FIG. 4 shows the device before installation, FIG. 5 shows the device after installation, FIG. 6 is an explanatory diagram of the operation of Runisoto, and FIG. 7 is an explanatory diagram of a conventional example. 1... Main body case IA... Top 2... Motor 3... Outer blade 6... Inner blade (13) 7... Vibrator 7A... First storage chamber 8... Rotating shaft 9...Eccentric cam 10...Edge unit 13A...Storage chamber 13a...Bottom wall. Applicant Hitachi Maxell Co., Ltd. Representative Atsushi Nagai

Claims (1)

[Claims] 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 at the top of the main body case. The vibrator 7 is stored in the first storage chamber 7A for the vibrator inside the IA, and the inner cutter body 6, which has the tip of the vibrator 7 protruding from the top wall of the top IA and comes into sliding contact with the outer cutter 3, is reciprocated, and this vibration A second storage chamber 13A is arranged adjacent to the first storage chamber 7A in a direction perpendicular to the protruding direction of the child 7, and the second storage chamber 13A is rotatable between a storage state and a protruding operating state. The supported edge unit 10 is stored, and the connection position between the vibrator 7 and the eccentric cam 9 in the first storage chamber 7A is shifted toward the soil wall of the top portion IA by the bottom wall 13a of the second storage chamber 13A. A reciprocating electric razor set.