JPH09140955A - Rotary electric razor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to assembly an inner blade into a main body case easily and check the driving condition of the inner blace before assembling it into the main body case by combining a driving mechanism of the inner blade as a single unit. SOLUTION: An inner blade 7 is integrally connected between a pair of inner blade supporting frames 15, 16 which face each other and which are supported by an inner blade-driving shaft 14, with a connecting member 21. The inner blade supporting frames 15, 16, a motor 17, and a power transmission mechanism 18 for transmitting the output of the motor to the inner blade-driving shaft 14 are integrally combined into one inner blade unit 8. This inner blade unit 8 can be assembled into a main body case 1 after the motor 17 is rotated and the driving condition of the power transmission mechanism 18 and the rotating condition of the inner blade are checked.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary electric shaver, and more particularly, to a rotary electric shaver in which an inner blade closely contacting an inner surface of a mesh-shaped outer blade is driven to rotate around a horizontal axis. The present invention relates to a rotary electric shaver in a form.

[0002]

2. Description of the Related Art As a rotary electric shaver of this type, a cylindrical inner blade is rotatably mounted between upper end portions of a pair of inner blade supporting frames, and a motor and a motor are mounted on one inner blade supporting frame. There is one that is equipped with a gear transmission mechanism that transmits the output to the inner blade (for example, the actual opening 57-
75868).

[0003]

In the above-mentioned conventional rotary electric shaver, the pair of inner blade supporting frames are formed separately from each other and are not integrated with each other. Only when assembled to the case, the positional relationship between the driving components of the inner blade is determined and a state in which the inner blade can be driven can be obtained. However, such a method of assembling the main body case requires not only a large amount of assembling work, but also after the assembly to the main body case, it is impossible to check whether the driving state is good or not. It costs.

The object of the present invention is to solve these problems, and by unitizing the drive mechanism of the inner blade, the assembling property to the main body case can be improved, and It is to provide a rotary electric shaver that enables checking of driving quality before assembling to a main body case.

[0005]

According to the present invention, as shown in FIG. 1, an inner blade 7 of a cylinder type, which is driven to rotate around a horizontal axis, is bent and stretched on an upper portion of a main body case 1 in an arch shape. It is assumed that a rotary electric shaver is supported so as to be in close contact with the inner surface of the provided mesh-shaped outer blade 6 over the entire length in the axial direction. In addition, a pair of opposed inner blade support frames 15 and 16 having the inner blades 7 supported at both ends are integrally connected by a connecting member 21, and the inner blade support frames 15 and 16 and the Fixedly supported motor 17
Transmission mechanism 1 for transmitting the output of the motor 17 to the inner blade 7
8 are integrally combined to form one inner blade unit 8, and this inner blade unit 8 is incorporated in the main body case 1.

[0006]

Before the inner blade unit 8 is incorporated in the body case 1, the motor 17 can be rotated to inspect the drive state of the transmission mechanism 18 and the rotation state of the inner blade 7 by itself.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a rotary electric shaver according to the present invention will be described with reference to the drawings. 1 to 4, the main body case 1 of this is shown in FIG.
1b is butted and integrally connected with a screw or the like, and this bottom opening is closed by a bottom case 1c. In the lower half of the body case 1, a pair of front and rear circuit boards 2
2 and two rechargeable batteries 3 sandwiched between them
・ Incorporating 3 and charging plug 4 in bottom case 1c
Is installed.

A mesh-shaped outer blade 6 is mounted on the upper part of the main body case 1 in an arch-like manner via an outer blade holder 5.
The inner blade unit 8 supporting the horizontal axis is vertically movably mounted and pushed up. Furthermore, front case 1
A sharp shaving case 9 is slidably mounted in the vertical direction on the front surface of a.

In FIG. 4, the outer blade holder 5 comprises an inner holder 5a and an outer holder 5b which is separably superposed on the outer side of the inner holder 5a.
b is held between the mating surfaces. The front end of the outer blade 6 is locked and fixed to the front wall of the inner holder 5a with a pin P, and the rear end of the outer blade 6 is connected via a spring 11 to a support plate 10 attached to the rear wall of the inner holder 5a. The outer cutter 6 is connected and is always pulled toward the rear end side.

In FIG. 1, the right wall of the inner holder 5a is engaged with and supported by a locking claw 12a provided on the right upper end of the main body case 1, and the left wall of the inner holder 5a is connected to the upper left end of the main body case 1. And is supported by engagement with a locking claw 12b with a knob attached to the knob. Therefore, the left locking claw with knob 12b
Is pressed against the spring 13, the entire outer blade holder 5 can be removed from the main body case 1.

In FIG. 5, an inner blade unit 8 is a cylinder type inner blade 7, a pair of left and right inner blade supporting frames 15 and 16 for laterally supporting the inner blade 7 via an inner blade drive shaft 14, and a motor 1.
7, and a transmission mechanism 18 of a gear group for transmitting the motor output to the inner blade drive shaft 14.
When the motor 17 is rotated, the inner blade unit 8 configured as described above can drive the inner blade 7 via the transmission mechanism 18. It is vertically movably supported via support members 19 and 20.

The cylinder-type inner cutter 7 has a plurality of cutting blades 7a integrally formed on the outer peripheral surface of the cylinder in a spiral shape in the axial direction, and only at both ends in the axial direction. The space between 7a is filled with the filling 7b to form a true columnar shape.

The inner cutter supporting frames 15 and 16 are made of metal or hard plastic, and the left inner cutter frame 15 is connected to the connecting member 21 protruding from the inner surface of the right inner cutter supporting frame 16 by screws S. As shown in FIG. 1, the whole is assembled in an H shape in a front view. Bearing bosses 15a and 16a that rotatably support the inner blade drive shaft 14 are provided at upper ends of the left and right inner blade support frames 15 and 16, respectively. The inner blade support frames 15 and 16 are integrally connected to each other by the connecting member 21 so that the inner blade support frames 15 and 16 are connected to each other.
There is no wobble or rattling between the two, the dimensions between the two can be reliably maintained, and both bearing bosses 15a, 16a
The parallelism between them can be accurately obtained. As shown in FIG. 3, a transmission mechanism 18 is assembled to the right inner blade support frame 16.

Plastic support members 19 and 20 are integrally connected to the left and right inner blade support frames 15 and 16. Then, the motor 17 is fitted and supported by the motor holder 22 projecting from the inner surface of the right support member 20 in a sideways posture. The motor 17 has output shafts 17a and 17b on the left and right.
The output gear 23 mounted on the right motor output shaft 17b is interlocked with the transmission mechanism 18 of the gear group. The left motor output shaft 17a has a comb blade unit 3 incorporated in the shaving case 9 as will be described later.
Used to drive the 5.

As shown in FIG. 5, the left and right support members 19,
The upper and lower elastic arms 19a and 19a
20a is integrally projecting horizontally toward the center of the left and right, and thick portions 19b and 20b for attaching to the body case 1 are formed at the tips of the elastic arms 19a and 20a.

On the other hand, as shown in FIG. 4, partition walls 24a and 24b and intermediate stays 25a and 25 are provided above and below the inner surfaces of the front case 1a and the rear case 1b of the main body case 1, respectively.
b are provided so as to be able to butt-join. These partition walls 24a and 24b and intermediate stays 25a and 25b
On the opposite end surfaces of the elastic arms 19a, 20a, the thick portions 19b, 20b of the elastic arms 19a, 20a are engaged and supported. Thus, the support members 19 and 20 are floatingly supported in the main body case 1 via the pair of upper and lower and left and right elastic arms 19a and 20a. The elastic arms 19a and 20a are configured to be elastically swingable only in the vertical direction by forming the plate thickness in the vertical direction thin and forming the plate width in the front-back direction wide. Therefore, the inner blade unit 8 can move up and down with the front and rear positioned. Also, the elastic arm 19a
20a allows the elastic oscillating radius to be slightly changed independently by forming the bent portion 28 in the middle of each, so that the inner blade unit 8 can move not only in the horizontal posture in the vertical direction but also in the horizontal direction. You can also move up and down with a slight tilt.

Protrusions 15b and 16b are provided on the outer surfaces of the lower ends of the inner blade support frames 15 and 16, and the protrusions 15b and 16b
A spring 30 made of a compression coil spring is interposed between the protruding piece 29 protruding from the inner surface of the main body case 1, and the entire inner blade unit 8 is urged upward by the spring 30.

In FIG. 4 and FIG. 6, a drive arm 31 for shaving is provided at a rear portion of the motor holder 22 by a vertical support shaft 32.
Are pivotally connected to each other via a horizontal swing. An L-shaped arm 33 having an elastic hinge 33a is connected to the drive arm 31. Thus, the tip 33b of the arm 33
Is an eccentric cam 34 attached to the left motor output shaft 17a.
And the drive arm 3 with the rotation of the eccentric cam 34.
1 is reciprocally driven left and right at a constant stroke.

In the upper part of the shaving case 9, a comb blade unit 35 is provided so as to be able to swing back and forth about a fulcrum 36, and when the shaving case 9 is slid upward, an unillustrated figure is obtained. The comb mechanism unit 35 is protruded forward by the link mechanism as shown by the two-dot chain line F in FIG.
7 has a lower end 37a engaged with the distal end 31a of the drive arm 31. The shaving case 9 also functions as a switch knob for stopping and starting the motor 17. When the shaving case 9 is at the lower limit position, the motor 17 is stopped, and the comb blade unit 35 is stored in the shaving case 9. You. When the shaving case 9 is pushed up further, the motor 17 is activated to allow shaving, and when it is pushed up further,
While the motor 17 is being driven, the comb blade unit 35 is protruded as described above, and shave can be performed.

(Another Embodiment) In the above embodiment, the gear transmission mechanism is used as the transmission mechanism for driving the inner blade, but a belt transmission mechanism may be used instead. Cylinder type inner blade 7
May have a separate cutting blade attached on the circumferential surface of the cylinder. The cutting edge 7a may be not only a spiral shape but also a straight blade parallel to the direction of the rotation axis.

[0021]

According to the rotary electric shaver of the present invention, a pair of inner blade supporting frames 15 and 16 integrally connected to each other by a connecting member 21, a motor 17 and a transmission mechanism 18 are integrally combined. Since the inner blade unit 8 is configured as one, the inner blade supporting frame 15.1
6, the motor 17 and the transmission mechanism 18 can be easily and efficiently incorporated into the main body case 1 all at once, and the assemblability can be improved. Moreover, since the inner blade unit 8 itself constitutes the entire drive mechanism for the inner blade 7, there is an advantage that it is possible to easily perform a drive check for each unit of the inner blade unit 8 before assembling.

[Brief description of the drawings]

FIG. 1 is an overall vertical sectional front view.

FIG. 2 is a vertical side view as viewed from the left side.

FIG. 3 is a vertical side view as viewed from the right side.

FIG. 4 is a sectional view taken along line AA in FIG.

FIG. 5 is an exploded perspective view of the inner blade unit.

FIG. 6 is a plan view of a comb blade driving arm portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 6 Outer blade 7 Inner blade 8 Inner blade unit 14 Inner blade drive shaft 15.16 Inner blade support frame 17 Motor 18 Transmission mechanism 21 Connecting member

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[Procedure amendment]

[Submission date] December 11, 1995

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005]

According to the present invention, as shown in FIG. 1, an inner blade 7 of a cylinder type, which is driven to rotate around a horizontal axis, is bent and stretched on an upper portion of a main body case 1 in an arch shape. It is assumed that a rotary electric shaver is supported so as to be in close contact with the inner surface of the provided mesh-shaped outer blade 6 over the entire length in the axial direction. In addition, a pair of opposed inner blade support frames 15 and 16 having the inner blades 7 supported at both ends are integrally connected by a connecting member 21, and the inner blade support frames 15 and 16 and the Fixedly supported motor 17
Transmission mechanism 1 for transmitting the output of the motor 17 to the inner blade 7
8 are integrally combined to form one inner blade unit 8, and this inner blade unit 8 is incorporated in the main body case 1. The upper and lower guides are further attached to the inner blade unit 8.
Is provided integrally, and through this vertical guide means.
The inner blade unit 8 is incorporated into the main body case 1 so that it can move up and down.
I will. The above-mentioned vertical guide means is the inner blade support frame 15.
16 at least projecting in parallel with the axial direction of the inner cutter 7.
It is composed of a pair of thin elastic arms 19a and 20a.
The main body case 1 is driven via partition walls 24a and 24b.
Compartment and a cutting chamber, and the model of the inner blade unit 8 is formed.
The motor 17 and the vertical guide means are disposed on the drive chamber side.
The upper ends of the inner blade support frames 15 and 16 are
When it is projected from the cutting walls 24a and 24b toward the cutting chamber,
The inner blade 7 suspended between the upper ends is used for the cutting.
It is arranged indoors.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction contents]

On the other hand, as shown in FIG. 4, partition walls 24a and 24b and intermediate stays 25a and 25 are provided above and below the inner surfaces of the front case 1a and the rear case 1b of the main body case 1, respectively.
b are provided so as to be able to butt-join. These partition walls 24a and 24b and intermediate stays 25a and 25b
On the opposite end surfaces of the elastic arms 19a, 20a, the thick portions 19b, 20b of the elastic arms 19a, 20a are engaged and supported. Thus, the support members 19 and 20 are floatingly supported in the main body case 1 via the pair of upper and lower and left and right elastic arms 19a and 20a. Further, the main body case 1 includes partition walls 24a and 24b.
The drive chamber and the cutting chamber are partitioned to form the drive chamber.
And a thin elastic arm 19a / 20a.
While the vertical guide means is housed and arranged, the inner blade support
The upper ends of the rams 15 and 16 are in front of the partition walls 24a and 24b.
A shaft protruding toward the cutting chamber and between the upper ends.
The cut inner blade 7 is disposed in the cutting chamber. Each of the elastic arms 19a and 20a is configured to be capable of elastically swinging only in the vertical direction by forming the plate thickness in the vertical direction to be small and the plate width in the front-back direction to be wide. Therefore, the inner blade unit 8 can move up and down with the front and rear positioned. In addition, the elastic arms 19a and 20a are formed with a bent portion 28 in the middle between them so that the elastic swing radius can be changed slightly independently, so that the inner blade unit 8 can only be moved up and down in a horizontal posture. Instead, it can also move up and down with a slight inclination to the left and right.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction contents]

[0021]

According to the rotary electric shaver of the present invention, a pair of inner blade supporting frames 15 and 16 integrally connected to each other by a connecting member 21, a motor 17 and a transmission mechanism 18 are integrally combined. Since the inner blade unit 8 is configured as one, the inner blade supporting frame 15.1
6, the motor 17 and the transmission mechanism 18 can be easily and efficiently incorporated into the main body case 1 all at once, and the assemblability can be improved. Moreover, since the inner blade unit 8 itself constitutes the entire drive mechanism for the inner blade 7, there is an advantage that it is possible to easily perform a drive check for each unit of the inner blade unit 8 before assembling. In addition, the inner blade unit 8
Since the upper and lower guide means are integrally provided in advance,
The inner blade unit 8 is attached to the main body case 1 through the lower guide means.
It can be installed more easily because it can move up and down.
You. The upper and lower guide means are inner blade support frames 15 and 16
From at least one pair protruding in parallel to the axial direction of the inner blade 7
Since it is composed of thin elastic arms 19a and 20a of
It is possible to move the blade unit 8 vertically and stably.
You. The main body case 1 is driven via the partition walls 24a and 24b.
Since it is divided into a cutting chamber and a cutting chamber, lint is removed from the cutting chamber.
The partition walls 24a and 24b prevent entry from the
Shut off, the shaft of the motor 17 in the drive chamber and the upper and lower guide hands
It is possible to prevent the dust from splashing on the steps,
It does not hinder the rolling or the vertical guide.

Claims (1)

[Claims] 1. A cylindrical inner blade 7, which is driven to rotate about a horizontal axis, is provided on the inner surface of a mesh-shaped outer blade 6 which is bent and stretched in an arch shape on the upper part of the main body case 1 over the entire length in the axial direction. In a rotary electric shaver supported in close contact with each other, a pair of opposed inner blade supporting frames 15 and 16 having the inner blade 7 doubly supported by a shaft are integrally connected by a connecting member 21; One inner blade unit 8 is configured by integrally combining the inner blade support frames 15 and 16, a motor 17 fixedly supported by the frames, and a transmission mechanism 18 that transmits the output of the motor 17 to the inner blade 7. A rotary electric shaver, wherein the inner blade unit 8 is incorporated in the main body case 1.