JPS6231093Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an outer blade configuration for a dry razor machine, and aims to provide sharpness due to multiple blades and ease of attachment and detachment of the outer blade.

Conventionally, this type of dry razor machine has a support rod that supports the outer cutter that is integrally molded or attached to the open outer cutter frame. Also, when installing the outer blade,
The structure was such that both ends of the outer cutter were attached to the outer cutter frame using outer cutter attachment members such as screws and nuts.

Therefore, when setting the outer cutter in the outer cutter frame, since the outer cutter is attached to the outer cutter frame and maintains a plurality of mountain shapes, the inner cutter R that slides on the outer cutter is The shapes of the outer cutter and the outer cutter arch did not match, making it impossible to ensure close contact, and the cutting quality was reduced due to the pulling of the whiskers. In addition, when replacing the outer cutter due to changes in the outer cutter over time, it takes time to remove the outer cutter mounting member and retighten it, and not only does the installation position of the newly replaced outer cutter become incorrect, but also It has been impossible to obtain a uniform pressing force of the blade against the outer cutter frame and completely prevent the blade from swinging.

Attaching the outer cutter attachment member to the outer cutter frame has a complicated structure, which causes troublesome attachment and detachment of the outer cutter and high cost.

The present invention eliminates all of the above drawbacks, and includes an engaging piece that engages with the outer cutter frame, a support rod that crosses the outer cutter valley, and an outer cutter fixing part that fixes both ends of the outer cutter. are integrally formed to form an outer cutter holder, an outer cutter is attached to the outer cutter holder, the outer cutter is formed into a plurality of mountain shapes, and in this state, the outer cutter holder is engaged with the outer cutter frame. It has a similar structure.

Hereinafter, one embodiment of the present invention will be described in more detail based on the drawings.

First, let's talk about the structure.

As shown in FIG. 4, the outer cutter frame 2 is locked onto the main body case 1. The upper surface of the outer cutter frame 2 has a rectangular opening 3 as shown in FIGS. 2 and 4, and an outer cutter holder engagement groove 6 having a slope 5 formed on the inner wall 4 is provided. The outer cutter holder 7 has an arch shape as shown in FIG. 3, and has troughs 11, 11' in the center of the longitudinal end surface 8, and the outer cutter holder 7 of the outer cutter frame 2 has troughs 11, 11' at the center of the end face 8 in the longitudinal direction. An outer cutter frame engagement piece 10 that engages with the engagement groove 6 protrudes.
Further, the end portions 9, 9' are connected to the support rod 12 which extends along the central portions of the trough portions 11, 11', and the outer cutter fixing portions 13 on the sides are integrally formed. are doing.

On the outer surface of the outer cutter fixing part 13, the end 1 of the outer cutter 14 is attached.
5 is fixed with a selvedge pin 16. In this case, the center portion 22 of the outer cutter 14 passes under the support rod 12. Therefore, as shown in FIG. 3, the outer cutter 14 has a trough formed in the center by the support rod 12, and the end portion 15 is fixed with a caulking pin 16 to form a double arch shape, and is attached to the outer cutter holder 7. It is set. The outer cutter 14 has a pattern in which holes are formed in each crest of a double-crested blade.

The inner cutter 17 that is in sliding contact with the outer cutter 14 is connected to the vibrator 1.
It is locked to an inner blade receiver 20 that fits into a vibration pin 19 that is integrated with 8. At this time, the inner cutter 17 is fixed to the base 21. (The drive unit is not shown) Next, handling will be described.

As mentioned above, the outer cutter 14 and the outer cutter holder 7 are integrally formed in a double-mounted shape, but if the outer cutter holder 7 is inserted into the outer cutter frame 2 in this state, the outer cutter 14 will be inserted into the outer cutter frame 2. Attach the blade frame 2. At that time, the outer cutter frame engaging piece 10 of the outer cutter holder 7 is inserted into the outer cutter holding engagement groove 6 of the outer cutter frame 2, and is further moved upward to engage with the slope 5. At this time, the outer cutter holder 7 always has an outward elastic force. Therefore, when the outer cutter holder 7 is set, the outer cutter 14 is biased downward by the slope 5 of the outer cutter holder engaging groove (which is a downwardly opening slope). To remove the outer cutter 14, apply an inward force to the outer cutter holder 7 by hand or with a jig, so that the outer cutter frame engaging piece 10 slides on the outer cutter removal slope 23 and the outer cutter holding engagement groove 6 is removed. It passes through and is removed.

In this embodiment, the outer cutter holder is made of synthetic resin or a metal plate, and the support rod is integrally formed.As shown in FIG.
Even if it is attached separately, the present invention is satisfied. Further, as shown in FIGS. 7 and 8, the support rod 12 may be configured so as to apply a downward biasing force to the outer cutter. In FIG. 7, the support bar is biased by a vertically moving spring 26, and in FIG. 8, the spring force is generated by forming the support bar 12 itself into a wave shape. Further, although the outer cutter is attached by urging the outer cutter frame engaging piece to the outer cutter frame, the outer cutter fixing portion may be pressed against the side wall of the outer cutter frame.

The above-mentioned contents further enhance the effect of the present invention.

The effects of the present invention will be described below.

From the beginning, the outer cutter has been configured as a double-crested cutter with a perfect arch shape, so it is in close contact with the outer periphery R of the inner cutter and has excellent sharpness. In addition, since the outer cutter, which is always urged downward, is urged upward by the inner cutter spring 24, when the outer cutter is pressed with the skin,
The outer cutter follows the movement of the inner cutter, and the state of contact does not change. This leads to the above-mentioned improvement in sharpness.

The outer cutter is securely fixed with the outer cutter holder, and the support rod accurately creates the arch shape of the double-crested cutter, and also controls play in the direction of vibration, so the outer cutter is securely fixed by the outer cutter holder, and the support rod accurately creates the arch shape of the double-crested blade. Swinging of the blade, vibration, generation of noise, etc. can be prevented. The effect of the double blade on the skin is that it softens the skin and increases the efficiency of shaving time. Furthermore, by using different patterns of the double-crested blades, different blades pass through the skin twice, making it possible to shave short and quickly without leaving any residue.

The outer cutter holder is located below the outer cutter end and also serves as a guard to prevent damage to the outer cutter. The outer cutter can be easily attached and detached by attaching a cartridge 25 (see FIG. 3) consisting of an outer cutter and an outer cutter holder. Not only does it save you the trouble of attaching and detaching it, but it also has a simple structure, fewer parts, and lower costs. The mounting position of the outer cutter when replacing the outer cutter can also be maintained in its initial state, and can be configured with extremely high precision.

As described above, the present invention provides an excellent dry shaver.

[Brief explanation of the drawing]

Each figure shows an embodiment of the present invention, and FIG. 1 is a partially cutaway perspective view of the outer cutter frame with the outer cutter assembled, and FIG. 2 is a partially cutaway perspective view of the outer cutter frame. A partial cutaway perspective view is shown. FIG. 3 shows a perspective view of a cartridge constituted by an outer cutter and an outer cutter holder. Fourth
The figures are main sectional views including the main body case, and FIG. 5 shows a sectional view taken along line AA' in FIG. 3, and FIG. 6 shows a sectional view taken along line BB in FIG. 3. Moreover, FIG. 7 is a diagram in which a support rod is fitted into the outer cutter holder in another embodiment and the support rod is moved up and down, and FIG. 8 is a diagram in which a biasing force is applied to the support rod in another embodiment. This is an example of preparing and configuring. 1...Main body case, 2...Outer cutter frame, 3...Outer cutter frame opening, 4...Inner wall of outer cutter frame, 5...Slope of outer cutter holder engagement groove, 6...Outer cutter holder Engagement groove, 7...
Outer cutter holder, 8... End face part (arched part) of outer cutter holder, 9, 9'... End part (disposed on outer cutter holder), 10... Outer cutter frame engagement piece, 11 , 11'...Trough of the end face of the outer blade holder, 12...Support rod (disposed on the outer blade holder), 13...Outer blade fixing part (disposed on the outer blade holder), 14... Outer blade, 15... end of outer blade,
16... Caulking pin, 17... Inner blade, 18... Vibrator, 19... Vibration pin, 20... Inner blade holder, 21
... Inner cutter base, 22 ... Center of outer cutter, 23 ...
Outer blade removal slope of the outer blade holder engagement groove, 24... Inner blade spring, 25... Cartridge, 26... Support rod vertical movement spring.

Claims (1)

[Scope of utility model registration request] an outer cutter frame having an inner wall that has an opening for attaching an outer cutter and that continues to the opening, and an engagement portion that engages an engagement piece of an outer cutter holder on the inner wall; an outer cutter having a plurality of ridges, an outer cutter fixing part to which both ends of the outer cutter are attached, an engagement piece that engages with the engaging part and engages the outer cutter with the outer cutter frame, and a plurality of ridges of the outer cutter. 1. A dry razor comprising: an outer cutter holder integrally having a support rod that crosses over the center of the outer cutter; and an inner cutter that slides on the arched inner surface of the outer cutter.