JP3742990B2 - Razor for haircut - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in a haircut razor.
[0002]
[Prior art]
Conventionally, a haircut razor for partially cutting hair is provided with convex pieces called comb teeth along the edge of the blade, and the blade edge exposed at regular intervals by the intermittent convex piece and the coated blade edge are divided. Prepare. Since haircut razors are based on partial cuts, the key point is how to make the hair feel natural and balanced overall. For this reason, for example, focusing on the hair combing function of a haircut razor, a haircut razor that adjusts the amount of hair combing has been developed. Examples of conventional razors for haircutting are disclosed in JP-A-54-72155, JP-A-10-249075, JP-A-2000-61175, JP-A-55-86672, and the like. This adjusts the amount of hair combing with the hair cut and groove, but the side of the convex piece is almost perpendicular to the exposed blade edge, and the hair moves from the tip of the convex piece to the blade edge during cutting. Since it moves immediately (that is, almost simultaneously), it is a negative factor in making a balanced cut.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to provide a hair-shaving razor capable of stably supplying hair to a blade edge exposed at the time of cutting and performing a balanced cut. It is another object of the present invention to provide a hair-shaving razor that adjusts the amount of hair combing and can achieve a balanced cut.
[0004]
[Means for Solving the Problems]
In the razor for haircuts based on partial cuts, as described above, it is important to prepare hair that gives a balanced and natural feeling. The basic idea of the present invention corresponding to this problem is to adjust the hair cut amount and combing amount, to prevent a temporary or sudden increase or decrease in the cut amount, and to balance the cut amount with the hair combing amount. The balance is to finish the balanced hair as a whole.
[0005]
That is, according to the present invention, a plurality of convex pieces intermittently cover the blade edges, and alternately include exposed blade edges and coated blade edges, and the pair of convex pieces are positioned below the blade edges. In a haircut razor blade having a parallel bottom and a groove for adjusting the amount of hair squeezing, the pair of convex pieces have a semicircular shape with the same shape protruding from the edge of the blade. When the haircut razor is moved in the direction where the edge intersects the hair, the hair is divided into the blade edge side and the groove side where the hair is exposed with the vertex of the semicircular convex piece as a branch point, and is guided to the peripheral edge of the convex piece A space that moves over time to the exposed blade edge and groove, adjusts the hair supplied to the exposed blade edge, and has a cut portion having a space A arranged side by side on both sides of the convex piece, and a spacing capacity The groove portion having B is the space A of the cut portion. And greater, when the hair in the space B of the groove when cutting the hair, exceeds a combing capacity, blade portion of the hair in the vicinity of the apex of the convex piece is exposed from the groove side beyond the apex of the convex piece It is possible to move to the edge side and adjust the rolling capacity of the groove .
[0006]
When hair is cut, if the razor for hair cutting is moved in the direction in which the blade edge intersects the hair, the hair is branched to the exposed blade edge side and the groove side with the vertex of the semicircular convex piece as a branch point. The hair bisected in this way is guided by the peripheral edge of the semicircular convex piece and moves to the adjacent exposed blade edge and groove, respectively. Since the protruding portions from the blade edge of the pair of convex pieces have the same shape and a semicircular shape, at least the hair that contacts the convex pieces does not move to the blade edge and the groove that are exposed instantaneously. In this case, a shift occurs with time, that is, with time, and moves to the blade edge and the groove. As a result, the amount of hair that is stable on average moves from the convex piece to the exposed blade edge, and a balanced hair cut on the exposed blade edge becomes possible. In order to equalize the hair substantially and supply it stably to the blade edge, it is effective that the protruding portion from the blade edge is the same semicircular shape. Hereinafter, the “same semicircular shape” allows a design difference.
[0007]
Moreover, it is provided with a semicircular convex piece, a cut portion having a space A arranged on both sides of the convex piece, and a groove portion having a space B for determining a rolling capacity, and the space A of the cut portion is made larger than the space B of the groove portion. When the hair in the groove space B exceeds the combing capacity when the hair is cut, a part of the hair near the apex of the convex piece can be moved to the blade edge side exposed from the groove side beyond the apex. Adjust the firing capacity.
[0008]
The exposed blade edge typically cuts the hair that contacts the blade edge and removes a certain amount of hair. In the present invention, since a certain amount of hair is supplied from the convex piece to the exposed blade edge, there is no significant change in the amount of hair in the space A of the cut portion. The adjustment of the amount of hair in the space A is an important premise for making a balanced cut.
[0009]
The length of the exposed blade edge is related to the amount of hair cut. That is, if the length of the exposed blade edge is large, the amount of cutting increases. In addition, if the length of the exposed blade edge is reduced, the amount of cut will be reduced, but if the amount of cut is too small, not only will it be necessary to perform the cutting work many times, but the overall balanced hair finish will also be achieved. It becomes difficult. In the present invention, a certain amount of hair is further supplied from the convex piece to the exposed blade edge, and the length of the exposed blade edge is more than twice the radius of the semicircular convex piece from the relationship with the supply amount. And within 5 times. Thereby, adjustment of the amount of hair in the space A of the cut portion, that is, temporary or rapid increase or decrease of the hair in the space A is sufficiently prevented, and a balanced cut is possible. However, in order to keep the blade edge length as small as possible and process the supply amount from the convex piece, the length of the exposed blade edge is set to be not less than twice and not more than three times the radius of the semicircular convex piece. You can also
[0010]
Moreover, when the hair accommodated in the groove part exceeds the combing capacity of the groove part when cutting the hair, a part of the hair that has become unaccommodated near the vertex of the semicircular convex piece exceeds the vertex and the groove part. Move from the side to the exposed blade edge and adjust the firing capacity. That is, in haircutting, adjustment of not only the amount of hair cut but also the amount of hair combing is an important point. The combing capacity is determined by the space B of the groove part, and usually the hair is combed within the range of the combing capacity of the groove part. However, when hair exceeding the combing capacity is supplied to the space B, the hair that cannot be accommodated in the space B cannot stay in the groove part, and a part of the hair tends to move to the blade edge side exposed from the groove part side. . That is, since the convex piece (protruding part from the blade edge) is semicircular, the edge side of the edge that is exposed from the groove side exceeds the vertex as if the vertex of the convex piece or a part of the hair in the vicinity overflows. Move to. Thus, even when hair exceeding the combing capacity is supplied to the space B, the combing capacity (maximum amount) of the groove portion can be adjusted to prepare the hair in a balanced manner as a whole.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the invention will be described with reference to the accompanying drawings.
The blade body 2 of the haircut razor 1 is covered with the blade edge 3 intermittently by convex pieces 5 protruding from the blade edge 3, and alternately includes the exposed blade edge 3a and the coated blade edge 3b. Further, a groove 6 is formed between the pair of convex pieces 5 and 5 for limiting the amount of hair combing (maximum amount) at the time of cutting. The groove portion 6 has a parallel bottom portion 7 positioned below the blade edge 3 so that the hair 9 does not contact the blade edge 3. The bottom part 7 may be located below the blade edge 3 and is not particularly limited. However, the position is related to the rolling capacity of the groove 6 (space B of the groove 6). Therefore, in order to increase the combing capacity, it is desirable that the bottom portion 7 is positioned slightly below the blade edge 3 so that the hair does not contact the blade edge 3 while the length of the bottom portion 7 can be kept small.
[0012]
The pair of convex pieces 5 and 5, except for the ones 30 at both ends, are semi-circular in the shape protruding from the blade edge 3, and the pair of convex pieces 5 and 5 disposed on both sides of the groove portion 6 are They are arranged symmetrically on the intermediate line XX between the two. Therefore, when the hair 9 is cut by moving the haircut razor 1 in the direction in which the blade edge 3 intersects the hair 9, the hair 9 that contacts the peripheral edge 10 of the convex piece 5 branches off the vertex 11 of the semicircular convex piece. The hair 9a, 9b which is divided into two points on the exposed blade edge 3a side and the groove portion 6 side moves to the adjacent exposed blade edge 3 and groove portion 6 respectively. Since the protruding piece 5 has a semicircular portion protruding from the blade edge 3, the branched hairs 9a and 9b are guided to the peripheral edge 10, and
It moves along the arcuate periphery 10 toward the blade edge. Here, “moving along the peripheral edge 10” includes not only the hair 9 a that moves while contacting the peripheral edge 10, but also the hair 9 a that moves nonlinearly while being affected by the arc-shaped peripheral edge 10. Since the hair 9 moves to the blade edge 5 side along the arc-shaped peripheral edge 10, there is a slight time delay until the hair 9a reaches the exposed blade edge 3a (or its vicinity) after branching. As described above, the hair 9 moves to the adjacent exposed blade edge 5 and the groove portion 6 through a time-dependent process, and is supplied after being almost leveled, so that it is possible to cut the hair 9 with a good balance as a whole. . On the other hand, as in the conventional example, when the branched hair moves to the blade edge side that is almost immediately exposed, the hair that exceeds the cutting ability of the blade edge (large) is temporarily supplied, and the hair is well balanced. It becomes an obstacle in cutting. The cut of the hair 9 varies depending on various conditions such as the amount of hair to be cut and the cut location, but since the portion protruding from the blade edge 3 is semicircular, the supply function over time is effectively exhibited.
[0013]
The space A of the cut portion is formed by the exposed blade edge 3a serving as the bottom and the same semicircular convex pieces 5 and 5 disposed on both sides. The length of the exposed blade edge 3a, which is a constituent element of the cut portion, is not less than twice the radius of the semicircular convex piece 5 and not more than five times. The exposed blade edge 3a cuts the hair 9 in the space A of the cut portion, and the hair 9a, 9a branched by the convex pieces 5, 5 on both sides is further supplied to the blade edge 3a. When the overflowing hair is taken into consideration, if the length of the blade edge 3a is 5 times the radius of the semicircular convex piece 5, it is sufficiently accommodated in the space A of the cut portion.
[0014]
A space B, which is a rolling capacity of the groove portion 6, is formed by a parallel bottom portion 7 slightly below the blade edge 3 and semi-circular convex pieces 5, 5 having the same shape. In the case of illustration, the convex pieces 5 and 5 are arrange | positioned symmetrically with respect to the intermediate line (FIG. XX line). And the length of the bottom part 7 which is a component of the space B was made smaller than the length of the exposed blade edge 3a. That is, when the space B of the groove portion, which is the rolling capacity of the groove portion 6, is compared with the space A of the cut portion including the exposed blade edge 3a, the space A of the cut portion is larger than the space B of the groove portion. When the space B of the groove portion has an accommodation capacity, the hair 9b, 9b on the groove portion side branched from the apex 11 of the convex piece 5 moves to the groove portion 6 along the peripheral edge 10 of the semicircular convex piece 5, and into the space B of the groove portion. Supplied. Again, there is no immediate movement of the hair 9b, 9b. Since the hairs 9b and 9b do not move to the groove portion 6 suddenly, stable combing is possible, which has a positive effect on combing.
[0015]
Thus, it is provided with a semicircular convex piece 5, a cut portion having a space A arranged on both sides of the convex piece 5, and a cut portion having a space B that determines a spreading capacity, and the space A of the cut portion is a groove portion. When the hair in the groove B space B exceeds the combing capacity when the hair is cut, a part of the unaccommodable hair 9 near the vertex 11 of the convex piece exceeds the vertex 11 It is possible to move from the groove portion 6 side to the exposed blade edge 3a side, and adjust the rolling capacity of the groove portion 6. The present invention can be applied to any haircut razor irrespective of its specific structure such as a replaceable blade type.
[0016]
【The invention's effect】
As described above, the present invention can stabilize the amount of hair supplied to the exposed blade edge and adjust the amount of hair to be combed, so that the hair can be cut in a balanced manner as a whole. It becomes.
[Brief description of the drawings]
FIG. 1 is a front view of a haircut razor according to the present invention.
FIG. 2 is a partially enlarged front view of the blade of the haircut razor.
FIG. 3 is a partially enlarged rear view of the blade of the haircut razor.
FIG. 4 is a partially enlarged front view of a convex piece of the blade.
FIG. 5 is an explanatory diagram showing an example of a relationship between convex pieces and hair during cutting.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Hair cutting razor 2 Blade body 3 Blade edge 5 Convex piece 6 Groove part 7 Bottom part 9 Hair 10 Perimeter 11 Vertex A Cut part space B Groove part space

Claims (2)

A plurality of convex pieces intermittently cover the blade edge, and alternately include exposed blade edges and coated blade edges, and between the pair of convex pieces have a parallel bottom portion positioned below the blade edge. In a haircut razor provided with a groove for adjusting the amount of hair to be combed, the pair of convex pieces have a semicircular shape in which the protruding portion from the blade edge is the same, and the direction in which the blade edge intersects the hair when cutting the hair When the haircut razor is moved, the edge of the semicircular convex piece is divided into two at the edge side and the groove side where the hair is exposed, and the edge and groove part where the hair is guided to the peripheral edge of the convex piece. The groove portion having the space A that adjusts the hair supplied to the exposed blade edge and adjusts the hair supplied to the exposed blade edge and has the space A that is arranged in parallel on both sides of the convex piece and the space B that determines the combing capacity is cut. The space A of the part is larger than the space B of the groove part, When the hair in the space B of the groove exceeds the combing capacity when cutting the hair, a part of the hair near the top of the convex piece can move beyond the top of the convex piece to the blade edge side exposed from the groove side. , A haircut razor that adjusts the combing capacity of the groove . The length of the blade edge exposed between the pair of convex pieces is set to be not less than 2 times and not more than 5 times the radius of the semicircular convex piece, and the length of the bottom portion of the groove is smaller than the length of the exposed blade edge. 1. A haircut razor according to 1.

Images