JP2533768B2 - Reciprocating electric razor - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a reciprocating electric shaver, and more particularly to a drive unit for an inner blade.

(Background Art) With a conventional reciprocating electric razor, if the grip part and the blade head part are straight and the blade surface is difficult to hit when touching the skin, how to hold the grip part and the skin of the blade surface It was difficult to maintain the contact angle and the usability was poor.

Therefore, there is one in which the blade head portion is inclined with respect to the grip portion to improve usability.

FIG. 5 is a cross-sectional view of a conventional reciprocating electric shaver. 1 is a grip part without an end, 2 is a blade head part, and a motor 3 is fixedly incorporated in a motor mount 4 in the grip part 1. A switch handle 7 engaged with a cam shaft 6 is mounted on the housing 5. A blade mount 8 is provided on the housing 5, and an outer blade frame 9 is attached to the tip of the blade mount 8. An eccentric balancer 11 that projects an eccentric shaft 10 is fitted to the shaft of a motor 3 built in the grip portion 1, a driver 12 is engaged with the eccentric shaft 10, and the driver 12 is inclined at an intermediate portion 12a. Thus, the inner blade mounting shaft portion 13 and the motor mounting shaft portion 13 of the inner blade driving shaft are formed. Then, the central shaft 13a of the motor mounting shaft portion 13 and the central shaft 14a of the inner blade mounting portion 14 substantially coincide with each other in the intermediate portion 12a. The inner blade mounting shaft portion 14 is engaged with the inner blade mounting base 16 via the pin 15, the inner blade mounting base 16 is provided with the inner blade 17, and the inner blade 17 is pushed up by the inner blade lifting spring 18. And is supported so as to be in sliding contact with the outer blade 19 mounted on the outer blade frame 9. Thus, the rotation of the motor 3 causes the eccentric shaft 10 to rotate.
The drive element 12 transmitted to the eccentric shaft 10 is driven to reciprocate by sliding the inner blade 17 against the outer blade 19. The trimmer 20 is driven by a trimmer joint 22 that engages with a trimmer drive rod 21, 23 is a trimmer handle, and 24 is a cap.

The center axis 13a of the motor mounting shaft portion 13 of the driver 12 of the conventional reciprocating electric shaver and the center axis 14a of the inner blade mounting shaft portion 14 are inclined at a position where they coincide with each other. Therefore, in order to mount the inner blade mounting base 16 on the driver 12, it is necessary to lengthen the length A of the motor mounting shaft portion 13 of the driver 12 in order to secure the height of the blade head portion 2 on the inclined side. Yes, the height B of the trimmer handle 23 due to the restriction of the positional relationship between the housing 5 and the trimmer drive rod 21.
Need to be higher. In addition, the entire length of the blade mounting base 8 becomes long, it is necessary to make the blade thick in terms of strength, and the thickness C also becomes large. As described above, the conventional reciprocating electric shaver has a large length A, a high height B, and a large thickness C, is large in size as a whole, and has a large blade head portion with respect to the grip portion, which is not easy to use. There was a flaw.

(Object of the Invention) The present invention has been proposed to solve the above-mentioned drawbacks, and an object of the present invention is to provide a reciprocating electric shaver which is small in size and easy to use.

DISCLOSURE OF THE INVENTION In order to achieve the above object, the present invention provides a reciprocating electric shaver in which a blade head portion is inclined with respect to a grip portion,
The inner blade drive shaft of the driver for reciprocating the inner blade is composed of a first mounting shaft portion parallel to the grip portion and a second mounting shaft portion parallel to the blade head portion, and the first mounting shaft portion is provided. The reciprocating electric shaver is characterized in that the second mounting shaft portion is eccentrically provided.

Embodiments of the present invention will be described below with reference to the drawings. Needless to say, the embodiment is merely an example, and various modifications and improvements can be made without departing from the spirit of the present invention.

FIG. 1 is an external perspective view of the present invention, which includes a grip portion 1 and a blade head portion 25, 19 is an outer blade made of a net blade, 26 is an outer blade frame for holding the outer blade 19, 20 is a trimmer, and 27 is A trimmer handle for operating the trimmer 20, 28 is a housing,
7 is a switch handle, 29 is a ring, 30 is a battery cover,
31 is a blade attachment / detachment button.

Next, the internal configuration will be described with reference to the front vertical sectional view of FIG. 2A and the side vertical sectional view of FIG. In the figure, those denoted by the same reference numerals as those of the conventional example have the same functions as those of the conventional example, and the description thereof will be omitted. In the figure, an eccentric balancer 11 provided with an eccentric shaft 10 is fitted to the shaft of the motor 3, and a driver 32 is engaged with the eccentric shaft 10. Details of the driver will be described later with reference to FIG. The driver 32 bends so as to incline in the middle portion, and the inner blade mounting base 16 is attached to the tip of the driver 32 via the pin 15, and the inner blade mounting base 16
17 is held in sliding contact with the outer blade 19 so as to reciprocate. The motor mount 33 extends further upward than the upper surface of the motor 3, and a boss 34 formed at the tip of the motor mount 33 engages the driver element 32. Also, the trimmer 20 is driven in the same climate as before.

Next, an enlarged sectional view of the blade head portion shown in FIG.
Details of the driver element will be described with reference to the perspective views and sectional views shown in FIGS. First, details of the driver will be described with reference to FIG. The driver 32 includes elastic leg pieces 36 formed in parallel with the side surfaces of the driver body 35, and has an inner blade drive shaft at the center, and the inner blade drive shaft is provided on the grip portion 1 (not shown). Are integrally formed with a second mounting shaft portion 38 on the inner blade mounting side that is inclined and bent at its tip, and the second mounting shaft 38 is a blade. The central axis of the head portion 25 is formed substantially parallel to the head portion 25. An arm 39 is provided in the lower space of the driver body 35, and the arm 39 has a hole for fitting with the eccentric shaft 10.
40 are provided. Further, a hole 41 for inserting a push-up spring 18 (see FIG. 3) for pushing the inner blade toward the outer blade is provided at the tip of the mounting shaft portion 38 in FIG.
A hole 42 is provided for inserting the pin 15 (see FIG. 3) that engages (see FIG. 3). Further, a frame 43 of the trimmer joint is fitted to the second mounting shaft portion 38 as shown in FIGS. (A) and (B), and as shown in the sectional view of FIG.
Engage with 45. It should be noted that the shaft protruding from the trimmer joint 22 is symmetrical in the front-rear direction and can be press-fitted in reverse without any problem.
In addition, it has a small space, is hard to come off in terms of strength, and has no rattling. Further, a hole 46 that engages with the boss 34 of the motor mount 33 and a blade mount 8 are provided at the ends of the elastic leg pieces 36.
A boss 47 that engages (see FIG. 3) is provided. The driver element 32 is held by these holes 46 and the boss 47, and the inclination of the inner blade driving shaft is maintained. The opening 48 provided in the first mounting shaft portion 37 is an opening for preventing sink marks during molding.

Next, the driver element will be described with reference to the enlarged cross-sectional view of the head portion in FIG. The eccentric shaft 10 is fitted in the hole 40 of the driver 32, and the driver 32 reciprocates by the rotation of the motor 3. An inner blade mounting base 16 is attached to the driver 32 via a pin 15, and an inner blade 17 held by the inner blade mounting base 16 slidably reciprocates with an outer blade 19. The trimmer 20 is also driven by a trimmer drive rod 21 which engages a trimmer joint 22. As described above, the inner blade drive shaft of the driver 32 includes the first mounting shaft portion 37 and the second mounting shaft portion 38, and the central axis X of the first mounting shaft portion 37 is substantially the same as the grip portion 1. It is parallel and the central axis Y of the second mounting shaft portion 38 is inclined so as to be substantially parallel to the blade head portion 25.
The central axis Y of the second mounting shaft portion 38 does not bend on the extension line of the central axis X of the first mounting shaft portion 37, but only a distance L with respect to the axis Z that bends on the extension line of the central axis X. It is deviated and bent. By displacing the central axis Y of the second mounting shaft portion 38 with respect to the axis Z by a distance L, the length of the first mounting shaft portion 37 can be shortened, and the height of the trimmer handle 27 can be lowered.
The blade mount 49 can also be made small. 50,5
1 is waterproof packing to improve reliability.

As described above, according to the present invention, in the reciprocating electric shaver in which the blade head is inclined with respect to the grip, the inner blade drive shaft of the driver for reciprocating the inner blade is the grip. Parallel first mounting shaft and second parallel to blade head
And the second mounting shaft portion is eccentrically provided on the first mounting shaft portion, that is, the blade head portion is tilted with respect to the grip portion to provide a grip. The blade surface easily touches the skin when it is used, and it is easy to use, and the center axis of the bent part of the first mounting shaft part and the second mounting shaft part of the driver is offset Thin,
It is possible to provide a reciprocating electric razor that is compact and easy to use as a whole.

[Brief description of drawings]

FIG. 1 is an external perspective view of the present invention, and FIGS. 2 (a) and 2 (b).
Is a front vertical sectional view and a side vertical sectional view, FIG. 3 is an enlarged sectional view, FIGS. 4 (a) and 4 (b) are perspective views of the driver, and FIG. 4 (c) is a partial sectional view of the driver. FIG. 5 is a sectional view of a conventional reciprocating electric shaver. 1 …… Grip part, 17 …… Inner blade, 25 …… Blade head part, 32
...... Drive element, 37 ...... First mounting shaft part, 38 ...... Second mounting shaft part

Claims (4)

(57) [Claims] Claims: 1. A blade head part having a blade part composed of an outer blade and an inner blade at the upper end is inclined with respect to the grip part, and a driver for reciprocating the inner blade is housed in the grip part, and a thin plate shape is formed. The outer blade is attached to the upper opening of the blade head, and the inner blade is attached to the tip of the inner blade drive shaft protruding from the upper surface of the driver to reciprocally drive the inner blade to the outer blade. In the reciprocating electric shaver, the inner blade drive shaft is composed of a first mounting shaft portion parallel to the grip portion and a second mounting shaft portion parallel to the blade head portion and having an inner blade mounted at the tip, The tip of the mounting shaft of No. 1 is projected from the upper end of the grip into the blade head,
The second mounting shaft portion is eccentrically extended from the tip side surface of the first mounting shaft portion projecting from the upper end of the grip portion to the inclined side of the blade head portion, and the central shaft of the first mounting shaft portion. A reciprocating electric shaver, characterized in that the intersection of the central axis of the second mounting shaft portion and the central axis of the second mounting shaft portion is located below the tip of the first mounting shaft portion. 2. A reciprocating electric shaver according to claim 1, wherein a seal member is provided between the peripheral side surface of the first mounting shaft portion and the upper end opening of the grip portion. 3. A driver element integrally forming a first mounting shaft portion and a second mounting shaft portion, and further comprising a pair of elastic leg pieces and an engagement hole for an eccentric shaft. Reciprocating electric razor described in paragraph. 4. The reciprocating electric shaver according to claim 1, wherein the first mounting shaft portion is provided with a sink preventing opening.