JP2003111985A - Razor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a razor for haircut which has a simple structure and is convenient and to provide other razors. SOLUTION: The razor is provided with at least a pair of blades 2. Blade edges 3 of the pair of blades 2 are oriented in the opposite direction to each other and the axis lines L of the blades 2 each connecting the blade edge 3 and the back are arranged non-collinearly and the length in the direction of the height of the entire pair of the blades 2 is adjusted. Also, with respect to the razor provided with at least a pair of blades 2, their blade edges 3 which are covered with comb teeth 5 at intervals are oriented in the opposite direction to each other and their axis lines L each connecting the blade edge 3 and the back are arranged non-collinearly and the length in the direction of the height of the entire pair of the blades 2 is adjusted.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to improvements in razors for hair cutting. Furthermore, the present invention relates not only to razors for haircuts, but also to improvements in other general razors.

[0002]

2. Description of the Related Art For example, when it comes to razors for hair cutting, both for business use and for household use, the blades are usually covered with protrusions called comb teeth which are spaced apart from each other. It can be classified into the following three types. (1) is a type in which comb teeth (cover body-reference numeral 8 in the publication) are fitted into a blade as disclosed in Japanese Utility Model Publication No. Sho 49-128487, and (2) is one of Japanese Utility Model Publication No. Sho 50-116676. As disclosed in Japanese Patent Laid-Open Publication No. JP-A No. 2004-163, the blade portion of the main body is provided with comb teeth. In (3), a blade is attached to a back metal provided with comb teeth (a back metal with a comb), and this is the current mainstream.

The comb teeth of a razor for haircut have two important functions. That is, first, it protects the finger of the user of the razor for hair cutting, or the neck, face, and ears of the customer who receives the hair, such as the customer. Secondly, cut and uncut parts (non-cut parts) are created on the hair to give a natural and soft texture. For the cut portion and the non-cut portion, it is necessary to appropriately cope with situations such as a hair style and a cut portion of hair by changing the distance between the comb teeth covering the cutting edge and adjusting the exposed width of the cutting edge. For example, in the case of the razor for hair cutting as described in (2) above, the intervals between the comb teeth are different from one another. However, in the case of the type (3) described above, a single holder may be used while appropriately replacing a spare blade provided with appropriate comb teeth, or a plurality of haircuts provided with various comb teeth may be used. You have to get a razor, which is actually quite inconvenient and not very user-friendly.
Therefore, as a result of repeated research, it has been conceived to adopt a structure in which a pair of blades are arranged (hereinafter referred to as "double type") with the blades being directed in directions opposite to each other.
This double type razor has the advantage that any blade can be used appropriately, and it has been found that it is useful not only for razors for hair cutting but also for general razors such as razors for shaving. . Therefore, the razor for hair cutting according to the present invention and other general razors basically adopt this double type structure (unless otherwise specified below, "razor is" for hair cutting. Including both razors and other razors).

However, on the other hand, it was also found that the double type razor has another problem. That is, when a pair of blades (blade holder, blade) are arranged in series, the double-type razor is inevitably increased in overall height and is not always easy to handle during use. Further, if the height of the entire body becomes large, it becomes difficult to balance the weight, and similarly, it is not easy to handle during use. Generally, weight balance is important for hand tools such as razors,
This is something that everyone knows empirically. For example, in the case of a haircut, the hair is partially shaved off in small portions, and this is applied to the entire hair to cut the entire hair, so that it becomes an unwieldy tool when it is difficult to balance the weight of the razor. The same applies to a general razor for shaving.

[0005]

SUMMARY OF THE INVENTION The present invention overcomes these drawbacks and provides a razor and other razors that have a simple structure and are easy to use.

[0006]

In order to solve this problem, a razor according to the present invention is a razor provided with at least a pair of blade bodies, wherein the pair of blade bodies are such that the blade tips are oriented in directions opposite to each other, and the blade edges are opposite to each other. The blades that connect the back to the back are arranged so that the axes of the blades are not on the same line, and the length of the pair of blades in the height direction can be adjusted. Further, in the razor for hair cutting, the pair of blades are arranged so that the blade tips which are covered with comb teeth are directed in directions opposite to each other, and the axes of the blades connecting the blade tips to the back are not on the same line. The length of the pair of blades in the height direction can be adjusted. In either case, the pair of blades are characterized in that the blade edges are directed in directions opposite to each other, and the axes of the blades connecting the blade edges to the back are not on the same line. As described above, the axes of the pair of blades are not arranged on the same line, and thus the blades can be brought closer to each other in the height direction (axial direction) on the axis of the blades. Therefore, for example, when the blade bodies are provided in the manufacturing stage, the blade bodies are appropriately brought close to each other in the height direction, and the length of the pair of blade bodies (blade, blade holder) in the height direction is reduced. I'm dying. Similarly, the size of the entire pair of blades (blade holder, blade) can be further reduced. On the other hand, the axes of the pair of blades are on the same line,
When the blades are arranged in series, the mutual approach of the blades on the axis is maximum up to the position where one blade (end) and the other blade (end) abut. is there. In the present invention in which the pair of blades are arranged so that their axes are not on the same line and are arranged in a non-series manner, it is possible to approach each other more than at least a series arrangement. The "possible" mutual access is possible also in this sense. It is desirable that one axis line and the other axis line are basically arranged in parallel.

In a structure in which the blade body is mounted on the blade body holder, for example, a razor in which the blade body is detachably mounted in a pair of engaging grooves of the blade body holder, the length in the height direction of the entire holder is In order to reduce the size, the pair of engaging grooves in which the blades are mounted must also be close to each other. However, on the other hand, when the thickness of the engaging grooves becomes too small due to the mutual proximity of the engaging grooves, the strength between the engaging grooves, that is, the strength of the blade holder and the like decreases. Since there is no restriction on the material and structure of the blade holder, the required strength between the engaging grooves (thickness between the engaging grooves) is not constant. For example, when the blade holder is made of plastic, the strength The decline can be a major defect. That is, here, it is necessary to make the thickness between the engaging grooves as small as possible due to the mutual proximity of the engaging grooves, but it is necessary to ensure a constant thickness (predetermined thickness) between the engaging grooves. There is a request.

In order to satisfy these contradictory requirements, the present invention is constructed as follows. That is, in a blade holder having at least a pair of engaging grooves, and the blades being detachably attached to the engaging grooves, the engaging grooves are arranged in different steps, and the height direction between the engaging grooves and / or Alternatively, the interval in the width direction is adjusted, and the connecting portion having a predetermined thickness is provided between the engaging grooves. The disposition of the engagement grooves in different steps is that the center lines of the pair of engagement grooves are not on the same line with reference to the center line of the engagement groove, and the pair of engagement grooves are arranged in a non-series manner. It Therefore, with respect to the axis of the blade, the pair of blades are arranged so that their axes are not on the same line (the above-mentioned one), and there is no difference in its substantial meaning. Therefore, for example, when forming the engagement grooves in the manufacturing process of the razor, the engagement grooves arranged in different steps are paired by a mutual approach in the height direction (center line direction) on the center line as much as possible. The length and / or size of the entire blade holder in the height direction can be appropriately reduced.

The thickness between the engaging grooves is set by adjusting the distance between the engaging grooves in the length direction (center line direction) and the distance between the engaging grooves in the width direction (center line). . As a result, when forming the pair of engagement grooves, a connecting portion having a predetermined thickness k is provided between the engagement grooves arranged in different steps, and the required strength is secured.

In the razor according to the present invention, the blade holder has a pair of engaging grooves of the same shape which are symmetrically arranged so as to maintain the weight balance of the holder. By arranging the engaging grooves symmetrically in this way, it is possible to easily maintain the weight balance of the holder and facilitate handling during use.

In the double type structure, the pair of blades face in opposite directions, so that when one blade is used, the other blade may be an obstacle. For example, a razor for hair cutting may be used by laying down the razor until it is nearly parallel to the hair in order to reduce the opposing angle between the razor and the hair. Slide cutting, which is a typical example, is a technique of cutting hair while sliding a lying razor on the hair, but in this case, the cut hair on the other side (blade holder or blade) ), And smooth movement to the back may be hindered. Therefore, the razor for hair cutting according to the present invention includes at least a pair of blades, and when one of the blades is used, in the advancing direction of the hair cut by the one blade on the side of the other blade. An escape portion consisting of a space area was formed. The escape portion is an escape portion of the cut hair, and thus the cut hair moves smoothly in the traveling direction without any significant obstacle. It is also effective for slide cutting, where the razor is laid down until it is parallel to the hair.

Next, also in the case of a razor for shaving, the other blade (blade holder or blade) on the opposite side may come into contact with the skin surface during use, which hinders smooth use of the razor. There is. Therefore, the razor according to the present invention includes at least a pair of blades, and when one blade is used, avoids contact with the skin surface facing the blade holder or the side surface of the blade on the side of the other blade. An escape portion formed of a space area for forming is formed. Due to this escape portion, when one blade body (blade body holder or blade) is tilted and laid down during use, the side surface portion of the other blade body (holder or blade) contacts the facing skin surface. Without or with a reduction in that, smooth shaving is possible.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described with reference to the accompanying drawings. In FIG. 1, a razor 1 includes at least a pair of blade bodies 2, and blade edges 3 are oriented in directions opposite to each other. The pair of blades 2 may have the same shape, size, shape, and structure, or may have different shapes. For example, at least two types of blades 2 having different performances such as different cutting conditions of the cutting edge can be provided. When the blades 2 have different performances and the like, they have various uses. In FIG. 2, a razor 1 for hair cutting is provided with a pair of blades 2, and the blade tips 3 are oriented in directions opposite to each other, and the blade tips 3 are covered with projections called comb teeth 5 at intervals. In the razor 1 for hair cutting, for example,
By providing at least two types of blades 2 having different performances such as different intervals between the comb teeth, various haircuts can be made with one razor.

In the illustrated razor 1, the blade body 2 is a spare blade, and the blade body 2 is detachably attached to the blade body holder 6. The blade holder 6 has a distal end portion 21 to a proximal end portion 22.
The blade body 2 is detachably attached to the engagement groove 7 from the tip portion 21. The pair of blade bodies 2 are oriented such that the blade edges 3 are opposite to each other. In the illustrated case, the pair of blade bodies 2 mounted in the engagement grooves 7 are oriented such that the blade tips 3 are opposite to each other. The pair of blade bodies 2 mounted in the engagement grooves 7 are arranged in a non-series state in which the axis line L of the blade body connecting the blade tip 3 to the back portion 8 is not on the same line. (See Figures 3 and 4). The two axes L, L are parallel to each other, preferably parallel. It may be substantially parallel, or may be in a skewed state. Blade 2 (sword blade or blade holder 6)
Since the structure is not particularly limited, the blade may be fixed to the blade holder, or the blade 2 and the blade may be integrated (not shown). Since the axes L, L of the blade body 2 are not on the same line, for example, when the blade body 2 is provided on the razor, the blade bodies 2 are appropriately brought close to each other on the axis line, and a gap M in the axial direction between the pair of blade bodies is provided. Is adjusted to set the length of the pair of blades in the height direction or the size of the blade as a whole. Reference numeral 19 is a razor handle.

An interval M between the pair of blades 2 and 2 in the axial direction (that is, the interval between the back 8 of one blade and the back 8 of the other blade, or the back metal 10 of one blade). And the other back metal 10 is not present), and the zero point position may be approached (not shown). Further, mutual approach beyond this is also possible (not shown). As long as the blades 2 can approach each other on the axis, the two axes L, L may be oblique as described above. In this case, unlike the case where the two axes L are parallel to each other, there is a certain limit to the mutual approaching of the blades 2 on the axis, but at least the entire length is made smaller than that of the series arrangement. It is possible to approach each other. However, since the cutting edges 3 are oriented in directions opposite to each other, those in which the cutting edges are oriented in the same direction are excluded.

The relative arrangement relationship between the pair of blades 2 and 2 has been described above with reference to the axis L of the blade. Further, in the razor 1 in which a pair of engagement grooves 7 and 7 are provided and the blade 2 is mounted in the engagement grooves 7, there are similar features in the relative positional relationship between the engagement grooves 7 and 7. That is, the blade 2 is inserted in the engaging grooves 7, 7.
In the razor that is detachably mounted, the engaging grooves 7 are arranged in different steps, and a connecting portion 9 having a predetermined thickness is provided between the engaging grooves. Since the engagement grooves 7, 7 are arranged in different steps, the engagement grooves can be brought closer to each other. The staggered arrangement of the engagement grooves 7, 7 is that the center lines K, K of the engagement grooves 7 are not on the same line with reference to the center line K of the engagement grooves. They are arranged in non-series. Since the center lines K, K of the pair of engagement grooves 7 are not on the same line, the engagement grooves can approach each other on the center line K. Therefore, when providing the engaging groove 7 and the like in the blade holder 6, the engaging grooves 7 and 7 are brought close to each other, and the distance m between the one engaging groove 7 and the other engaging groove 7 is made relatively small. . As a result, the length of the blade holder 6 in the height direction (the vertical length X of the blade holder 6 in FIGS. 3 and 5) and the overall size thereof are set. In the case of FIG. 5, the two center lines K of the engaging groove 7
Are parallel to each other, but may be oblique as in the case of the axis L of the blade. And basically the axis L of the blade
The explanations given above also apply to the center line K of the engagement groove.

A connecting portion 9 having a thickness t is provided between the engaging grooves 7, 7.
There is. The connecting portion 9 connects the engaging grooves 7, 7, and the thickness t of the connecting portion 9 is greatly related to the strength of the blade holder 6. In order for the blade holder 6 to maintain a certain strength,
It is necessary to secure a predetermined thickness t in the connecting portion 9 that connects the engaging grooves 7, 7. The thickness t of the connecting portion 9 is a distance m between the engagement grooves in the height direction (direction of the center line K of the engagement groove) and a distance n between the engagement grooves in the thickness direction (center line of the pair of engagement grooves It is set by adjusting the length n) between K and K. Since the pair of engagement grooves 7 and 7 are arranged at different levels, the thickness t of the connecting portion 9 can be set to be larger than that of the pair of engagement grooves arranged in series.

As shown in FIG. 5, the blade holder 6 has a pair of symmetrically arranged engaging grooves 7, 7. The bottom of the engaging groove 7 is the deepest part 11 of the bottom through which the center line K passes.
Slopes 13, 1 extending from the bottom to the shallowest parts 12 on both sides
5 (or curved surface-not shown), and the length of the inclined surface is uniform (for example, 2 mm each). Further, one inclined surface 13 and the other inclined surface 15 face each other,
A predetermined thickness t is secured between the engaging grooves, and the length in the width direction (Y in FIG. 5) can be held down. In the illustrated case, the thickness t between the engaging grooves is equal to the bottom 13 of the engaging groove.
And the bottom portion 15 on the other side. In order to secure the same thickness by arranging the engaging grooves in series, the height X in the height direction of the pair of engaging grooves must be relatively large.

The blade holder 6 has a pair of identically shaped engaging grooves 7, 7 symmetrically arranged, so that the weight of the blade holder 6 can be easily balanced. Furthermore, in the engagement groove 7 of the same shape,
By mounting the blade bodies 2 of the same shape, in particular, the blade bodies 2 having the same weight, the weight balance of the blade body holder 6 can be more easily balanced.

Blade body 2 in which the blade edges 3 are oriented in directions opposite to each other
The razor 1 having a space area for avoiding contact with the blade holder or the skin surface facing the side surface portion 16 of the blade 6 on the side of the other blade 2 when the one blade 2 is used. The escape portion 17 is formed. Runaway part 1
According to 7, the skin surface and the side surface portion 16 of the blade holder or the blade facing the skin surface do not contact with each other or are less likely to contact with each other during use. Further, the razor 1 for hair cutting provided with the blade bodies 2 in which the blade edges 3 are directed in directions opposite to each other has a blade body 2b of the other when the blade body 2a of the one is used.
On the side of, the relief portion 17 formed of a space region is formed in the traveling direction of the hair cut by the one blade body 2a. The hair 20 to be cut during use by the escape portion 17 is the other blade body 2b, for example, the other blade body 2b.
The blade holder or the side surface portion 16b of the blade is not contacted or is hard to contact.

In any case, it is preferable that the relief portion 17 includes a space region R utilizing the step (center line K, the interval n between K) between the engagement grooves 7, 7 arranged in different steps (FIG. 5). reference). The lower side of the space area forming the escape portion 17 is limited by the side surface portion 16, but the space area is defined by at least the axis L of one blade (or the center line K of one engagement groove) and the side surface portion 16. A region R between them is included. This makes it difficult for the skin surface or the hair 20 of the cut lashes to come into contact with the side surface portion 16 during use. The relief portion 17 is almost the axis L of the blade.
It is formed along. Thereby, for example, the hair to be cut smoothly moves in the traveling direction (leftward in FIG. 6). Also, the side surface portion 16b of the other blade holder or the blade that defines the lower side of the space area is a tapered surface,
It gradually descends to the cutting edge 3. As a result, the skin surface or the cut hair is less likely to contact the side surface portion 16 during use, and even if there is partial contact with the scale, smooth use is not hindered.

The holder or the blade has on the side part 16 an identifier which indicates which blade 2 is used. The identifier makes it easy to confirm which blade body 2 is being used at the time of use. In the case shown in the figure, one side surface portion 16 of the holder or the blade 6 is gold, and the other side surface portion 16 is colored silver, and the identifier is formed in a constant color (different color). In addition to various signs, any type may be used as long as it is possible to distinguish the two in appearance. With the double type, it is convenient to have an identifier that can immediately determine which blade is being used.

To briefly touch on the manufacturing method of the holder 6, for example, a brass plate is processed in different steps by a press, and an engaging groove 7 for mounting a blade body (replacement blade) is cut by a grinder, and then a wall is formed. The portion (side surface portion) 16 is bent to a required dimension, and the surface is plated. Further, the holder or the blade 6 and the handle 19 are connected, and the connecting structure is such that the joint portion of the handle 19 is meshed with a gear (not shown). Therefore, if the holder or blade 6 and the handle 19 are pulled and rotated in a direction away from each other (rotatable by 360 degrees), they can be used at any angle.

[0024]

As described above, the razor for hair cutting and the other razors according to the present invention adopt the double type structure, which is simple and easy to use.

[Brief description of drawings]

FIG. 1 is a front view of a razor (without comb teeth) according to the present invention.

FIG. 2 is a front view of a razor (with comb teeth) according to the present invention.

3 is an enlarged side view of the razor shown in FIG. 1 (without comb teeth) as seen from the front end thereof.

FIG. 4 is an enlarged side view of the razor (with comb teeth) of FIG. 2 viewed from the front end thereof.

FIG. 5 is an enlarged side view of a razor (without comb teeth, with comb teeth) blade holder with no blade attached.

FIG. 6 is an explanatory view showing one of the haircut states by a razor (with comb teeth).

[Explanation of symbols]

1 razor 2 blades 3 cutting edge 5 comb teeth 6 Blade or blade holder 7 engagement groove 8 back 9 connection 10 money 11 Deepest part of the bottom 12 The shallowest part of the bottom 13 One inclined surface at the bottom 15 The other inclined surface at the bottom 16 Sides 17 Runaway 19 handle 20 hair 21 Tip 22 Base end

Claims (6)

[Claims] 1. A razor having at least a pair of blades, wherein the pair of blades are arranged such that the blade edges are directed in directions opposite to each other and the axes of the blades connecting the blade edges to the back are not on the same line, A razor with the height of the pair of blades adjusted in the height direction. 2. A razor provided with at least a pair of blades, wherein the pair of blades have blade axes whose blade edges covered with comb teeth are arranged in directions opposite to each other and whose axis connects the blade edges to the back. A razor for hair cutting that is arranged so that it is not on the same line and the length of the pair of blades in the height direction is adjusted. 3. A blade holder having a pair of engagement grooves to which the blades are detachably mounted, wherein the engagement grooves are arranged in a staggered manner, and the height direction and / or the width direction between the engagement grooves is increased. The razor according to claim 1 or 2, wherein an interval is adjusted and a connecting portion having a predetermined thickness is provided between the engaging grooves. 4. The razor according to claim 1 or 2, wherein the blade holder has a pair of identically shaped engagement grooves symmetrically arranged to maintain a weight balance of the blade holder. 5. A blade body comprising at least a pair of blade bodies, for avoiding contact with a skin surface facing a side surface portion of a blade body holder or a blade side of the other blade body when one blade body is used. The razor according to claim 1, wherein a relief portion formed of a space region is formed. 6. At least a pair of blades is provided, and when one of the blades is used, a relief portion consisting of a space region is formed laterally of the other blade in the advancing direction of the hair cut by the one blade. The razor for hair cutting according to claim 2.