JP7575115B2 - Haircut Brush - Google Patents

Description

The present invention relates to a haircutting brush.

Patent Document 1 describes a hair-cutting razor.
The hair-cutting razor (hereinafter, razor) described in Patent Document 1 includes a hair-cutting razor base material (hereinafter, base material) and a plurality of blades having cutting edges. The blades protrude from the base material and are arranged in parallel. The cutting edges of the blades are arranged perpendicular to the protruding direction of the blades. The cutting edges of the blades are oriented in the same direction.

With these razors, the user points the blade of the razor at the hair and moves the razor along the scalp from the head to the neck. At this time, the razor is moved so that the tip of the blade is in contact with the flow direction of the hair at an angle, cutting the hair at an angle.

Patent No. 4020404

However, it is difficult to move a razor while maintaining a constant angle of the blade tip relative to the direction of hair flow. In addition, hand shaking may occur when moving the razor. For this reason, with the razor described in Patent Document 1, there is a risk that hair may not be cut stably depending on the angle of the blade tip when the razor is moved, i.e., the position of the razor.

Various aspects of the hair-cutting brush for solving the above problems will be described.
[Mode 1] A hair-cutting brush comprising a brush body having a bottom surface, and a plurality of blades having cutting edges and protruding from the bottom surface in a first direction, wherein the plurality of blades are arranged at intervals from each other in a second direction perpendicular to the first direction, the cutting edges of the plurality of blades are provided on one side of the blades in a third direction perpendicular to both the first direction and the second direction, and at least two of a plurality of virtual straight lines extending along the direction of the cutting edges of the plurality of blades intersect each other.

When using the hair-cutting brush, the user points the blade side of the brush body toward the hair and the tip of each blade toward the front of the movement direction of the hair-cutting brush. Then, move the brush body from the head side toward the neck side while aligning it with the scalp.

According to the above configuration, even if one blade tip is in a position where it is difficult to contact the hair at a suitable angle due to hand shaking or the like when moving the hair-cutting brush, the other blade tip will be able to contact the hair at a suitable angle more easily. This makes it possible to cut hair regardless of the position of the hair-cutting brush when it is moved. Therefore, it is easy to cut hair stably.

[Aspect 2] The hair-cutting brush according to [Aspect 1], wherein the plurality of blades are arranged symmetrically with respect to an imaginary plane along both the first direction and the third direction.
According to this configuration, the arrangement of the multiple blades is plane symmetrical, so there is little difference in how the hair is cut when the hair-cutting brush is used with the right hand and when it is used with the left hand.

Therefore, the hair can be cut more stably.
[Aspect 3] A hair-cutting brush as described in [Aspect 1] or [Aspect 2], wherein the brush body has a plurality of pin-shaped portions protruding from the bottom surface in the first direction and arranged at intervals from each other, and the pin-shaped portions are arranged on one side of the blade in the third direction.

With this configuration, the flow of the hair is straightened as it passes between the pin-shaped parts. Then, the hair with its straightened flow comes into contact with the cutting edge of the blade at a suitable angle. This allows the hair to be cut more stably.

Furthermore, according to the above configuration, the pin-shaped portion prevents the user's fingers from coming into contact with the cutting edge of the blade, thereby improving the safety of the hair-cutting brush.
[Aspect 4] A hair-cutting brush described in any one of [Aspect 1] to [Aspect 3], in which a gripping portion having an uneven shape is provided on the outer peripheral surface of the brush body corresponding to the position in the second direction where the multiple blades are provided.

According to this configuration, a user can use the hair-cutting brush with either the right or left hand by gripping the grip portion provided on the outer peripheral surface of the brush body.
Furthermore, according to the above-described configuration, since it is not necessary to provide a handle, this contributes to making the hair-cutting brush smaller.

[Aspect 5] The hair-cutting brush according to any one of [Aspect 1] to [Aspect 4], wherein the brush body comprises a case having the bottom surface, and a cap attached to the case so as to cover the side of the case opposite to the bottom surface, the case comprises a case body portion having a plurality of insertion holes through which the blades are respectively detachably inserted, and a plurality of storage portions protruding from the bottom surface in the first direction and housing the blades with their blade tips exposed, and the cap has an abutment portion that abuts against the end faces of the blades protruding from the case to restrict movement of the blades.

According to this configuration, the blade is inserted into the insertion hole from the side opposite the bottom surface of the case, and the blade is housed in the housing with the front part in the insertion direction of the blade exposed. In addition, when the cap is attached to the case, the abutment part of the cap abuts against the end face of the part of the blade that protrudes from the case, preventing the blade from shifting in the first direction. Therefore, the blade can be stably held in the brush body.

In addition, with the above configuration, if the blade becomes dull, the blade can be pulled out of the case and attached to the case with the previously exposed blade side facing backward. This allows the hair-cutting brush to be used again with a new blade.

The present invention makes it easy to cut hair stably.

FIG. 1 is a perspective view showing one embodiment of a hair-cutting brush. FIG. 2 is a perspective view of the hair-cutting brush of FIG. FIG. 3 is a perspective view of the hair-cutting brush of FIG. FIG. 4 is a perspective view of the hair-cutting brush of FIG. FIG. 5 is a bottom view of the hair-cutting brush of FIG. FIG. 6 is a plan view showing the hair-cutting brush of FIG. FIG. 7 is a top view of the haircutting brush of FIG. 1 with the cap removed. FIG. 8 is a perspective view of the haircutting brush of FIG. 1 with the cap removed. FIG. 9 is a cross-sectional view taken along line 9-9 of FIG.

Hereinafter, one embodiment of a hair-cutting brush will be described with reference to Figs.
1, the hair-cutting brush 10 includes a brush body 11 and a plurality of blades 12. The number of blades 12 is, for example, four.

The brush body 11 has a bottom surface 11a. The bottom surface 11a is, for example, flat.
As shown in Fig. 5, the blades 12 protrude from the bottom surface 11a in a first direction X (a direction perpendicular to the paper surface of Fig. 5). The first direction X is a direction perpendicular to the bottom surface 11a. The blades 12 are arranged at intervals in a second direction Y (a left-right direction in Fig. 5) perpendicular to the first direction X.

The cutting edges 12a of the multiple blades 12 are provided on one side (the lower side in the figure) of the blades 12 in a third direction Z that is perpendicular to both the first direction X and the second direction Y.
At least two of the multiple imaginary straight lines L1 to L4 extending from the multiple blades 12 along the orientation directions of their blade tips 12a intersect with each other. More specifically, the multiple blades 12 are disposed symmetrically with respect to an imaginary plane F along both the first direction X and the third direction Z.

Among the four imaginary straight lines L1 to L4, the imaginary straight lines L1, L4 corresponding to the outer pair of blades 12 intersect with each other at an intersection point P1 located on an imaginary plane F.
Of the four imaginary straight lines L1 to L4, the imaginary straight lines L2, L3 corresponding to the pair of inner blades 12 intersect with each other at an intersection point P2 located on an imaginary plane F.

The intersection point P1 is located on the other side (upper side in the figure) of the intersection point P2 in the third direction Z.
Of the four blades 12, the outer pair of blades 12 are located to one side (lower side in the figure) in the third direction Z than the inner pair of blades 12.

The blades 12 are disposed on the other side (upper side in FIG. 5 ) of the center position of the bottom surface 11 a in the third direction Z.
The brush body 11 includes a plurality of pin-shaped portions 29 that protrude from the bottom surface 11a in the first direction X and are arranged at intervals from one another.

The pin-shaped portion 29 is disposed on one side (the lower side in FIG. 5 ) of the blade 12 in the third direction Z. More specifically, the multiple pin-shaped portions 29 are disposed symmetrically with respect to the imaginary plane F.
As shown in FIGS. 1 to 4, a gripping portion 11B having an uneven shape is provided on the outer circumferential surface 11b of the brush body 11 at a portion corresponding to the position in the second direction Y where the blades 12 are provided.

Next, each component of the hair-cutting brush 10 of the present embodiment will be described in detail.
＜Knife 12＞
As shown in Figures 8 and 9, the blade 12 is a replaceable blade for a replaceable blade razor.

The blade 12 includes a blade body 41 and a covering member 42 .
The blade body 41 has a cutting edge 12a.
The covering member 42 has a plate portion 42a that sandwiches both side surfaces of the blade body 41, and a plurality of protective portions 42b that are connected to the plate portion 42a and partially cover the cutting edge 12a. The protective portions 42b are provided at equal intervals in the extension direction of the cutting edge 12a.

The blade body 41 and the covering member 42 are formed of, for example, a stainless steel plate.
<Brush body 11>
As shown in FIGS. 1 to 4, the brush body 11 includes a case 20 having a bottom surface 11a, and a cap 30 attached to the case 20 so as to cover the side of the case 20 opposite to the bottom surface 11a.

<Case 20>
As shown in Figures 1 to 4, the case 20 comprises a case main body 21 and a plurality of storage sections 25 that protrude from the bottom surface 11a in the first direction X and each store a plurality of blades 12 with the cutting edges 12a exposed.

The case body 21 has a bottom wall 22 extending in the second direction Y and the third direction Z, and a peripheral wall 23 protruding from the periphery of the bottom wall 22 in the first direction X on the side opposite the storage portion 25 .
As shown in FIGS. 7 and 8 , a plurality of insertion portions 24 are provided inside the case body 21 .

The multiple insertion portions 24 protrude in the first direction X from the bottom wall 22 .
The bottom wall 22 and the insertion portion 24 are provided with a plurality of insertion holes 24a through which the plurality of blades 12 are respectively detachably inserted.

The portions of the outer circumferential surface 23a of the peripheral wall 23 that extend in the second direction Y are curved in an arc shape.
More specifically, as shown in Fig. 5, the portion of the outer peripheral surface 23a on the other side in the third direction Z (the upper side in Fig. 5) is curved in a convex shape. A step portion 23A is provided in this portion (see Figs. 2 and 3). More specifically, the step portion 23A is formed by the opening peripheral edge portion of the peripheral wall 23 of the outer peripheral surface 23a protruding outward. The step portion 23A is provided over the entire outer peripheral surface 23a in the second direction Y.

As shown in FIG. 5, a portion of the outer peripheral surface 23a on one side in the third direction Z (the lower side in FIG. 5) is curved in a concave shape. In this portion, a plurality of grooves 23B extending in the first direction X are provided at intervals from one another in the second direction Y (see FIG. 1 and FIG. 4).

As shown in FIG. 9, the storage section 25 has a side wall section 25a that covers the side surface of the blade 12, a bottom wall section 25b that covers the end surface of the blade 12, and an opening section 25c that exposes the portion of the blade 12 that includes the cutting edge 12a.

The protruding height of the accommodation portion 25 from the bottom surface 11a is equal to the protruding height of the pin-shaped portion 29 from the bottom surface 11a.
7 and 8, a rib 26 connected to the multiple insertion portions 24 is provided inside the case body 21. The rib 26 is connected to the bottom wall 22 and the peripheral wall 23.

As shown in FIG. 8, a locking hole 27 is provided on one side of the peripheral wall 23 in the second direction Y (the right side in FIG. 8).
A bearing portion 28 is provided on the other side in the second direction Y (the left side in FIG. 8 ) of the inner circumferential surface of the peripheral wall 23. The bearing portion 28 protrudes toward the cap 30 in the first direction X beyond the peripheral wall 23. The bearing portion 28 is provided with a hole 28a penetrating the bearing portion 28 in the third direction Z.

The case 20 is integrally molded from a resin material.
<Cap 30>
As shown in FIG. 4 , the cap 30 has a top wall 32 and a peripheral wall 33 .

The top wall 32 faces the bottom wall 22 of the case body 21 .
The outer peripheral surface 33 a of the peripheral wall 33 extends along the periphery of the opening of the outer peripheral surface 23 a of the peripheral wall 23 .

As shown in FIG. 6, a pair of slits 33c are provided at one side of the peripheral wall 33 in the second direction Y (the left side in FIG. 6) and spaced apart from each other in the third direction Z. The slits 33c extend to the peripheral edge of the opening of the peripheral wall 33 in the first direction X.

A notch 38 is provided on the other side of the peripheral wall 33 in the second direction Y (the right side in FIG. 6). The notch 38 extends to the peripheral edge of the opening of the peripheral wall 33 in the first direction X. A pair of shafts (not shown) protrude from a pair of inner surfaces of the notch 38. The pair of shafts are rotatably supported by the holes 28a of the bearing portion 28. This allows the cap 30 to be rotatable relative to the case 20.

The cap 30 has a locking portion 37 located between the slits 33c. The locking portion 37 protrudes toward the case 20 in the first direction X beyond the peripheral wall 33. A claw portion 37a is provided at the tip of the locking portion 37, which is configured to be locked into the locking hole 27 of the case body 21. A plurality of protrusions 37b are provided on the outer surface of the locking portion 37.

As shown in FIG. 9, an abutment portion 35 protrudes from the inner surface of the top wall 32. The abutment portion 35 restricts the movement of the blade 12 by abutting against the end surface 12b of the portion of the blade 12 that protrudes from the case 20.

As shown in FIGS. 1 and 4, a plurality of grooves 33B extending in the first direction X are provided in one portion of the outer circumferential surface 33a on one side in the third direction Z at intervals in the second direction Y.
The cap 30 is integrally molded from a resin material.

Next, the operation of this embodiment will be described.
5, when using the hair-cutting brush 10, the user orients the blades 12 of the brush body 11 toward the hair and orients the blade tips 12a of the blades 12 forward in the direction of movement of the hair-cutting brush 10. Then, the user moves the brush body 11 from the head side toward the neck side along the scalp.

According to this embodiment, even if one blade tip 12a is in a position that makes it difficult for it to contact the hair at a suitable angle due to hand shaking or the like when moving the hair-cutting brush 10, the other blade tip 12a can easily contact the hair at a suitable angle. This makes it possible to cut hair regardless of the position of the hair-cutting brush 10 when moving it.

Next, the effects of this embodiment will be described.
(1) At least two of the multiple imaginary straight lines L1 to L4 extending from the multiple blades 12 in the direction of the blade tips 12a of the multiple blades 12 intersect with each other. With this configuration, it is possible to easily cut hair stably.

(2) The multiple blades 12 are disposed symmetrically with respect to the imaginary plane F that is aligned along both the first direction X and the third direction Z.
According to this configuration, the arrangement of the blades 12 is plane symmetrical, so there is little difference in the way the hair is cut when the hair-cutting brush 10 is used with the right hand and when the hair-cutting brush 10 is used with the left hand. Therefore, the hair can be cut more stably.

(3) The pin-shaped portion 29 is disposed on one side of the blade 12 in the third direction Z.
According to this configuration, the flow of the hair is straightened by passing between the pin-shaped parts 29. Then, the hair in a straightened state comes into contact with the cutting edge 12a of the blade 12. This allows the hair to be cut more stably.

Furthermore, according to the above-described configuration, the pin-shaped portion 29 prevents the user's fingers or the like from coming into contact with the cutting edge 12a of the blade 12, thereby improving the safety of the hair-cutting brush 10.
(4) The outer circumferential surface 11b of the brush body 11 is provided at a portion corresponding to the position in the second direction Y where the blades 12 are provided. The gripping portion 11B has an uneven shape.

With this configuration, the user can use the hair-cutting brush 10 with either the right or left hand by gripping the grip portion 11B provided on the outer circumferential surface 11b of the brush body 11.

Furthermore, according to the above-described configuration, since it is not necessary to provide a handle, this contributes to making the hair-cutting brush 10 smaller in size.
(5) The brush body 11 has a case 20 and a cap 30. The case 20 includes a case main body portion 21 having a plurality of insertion holes 24a, and a plurality of storage portions 25. The cap 30 has a contact portion 35.

With this configuration, the blade 12 is inserted into the insertion hole 24a from the side opposite the bottom surface 11a of the case 20, and the front part of the blade 12 in the insertion direction is stored in the storage section 25 with the cutting edge 12a exposed. Furthermore, when the cap 30 is attached to the case 20, the abutment portion 35 of the cap 30 abuts against the end face 12b of the part of the blade 12 that protrudes from the case 20, preventing the blade 12 from shifting in the first direction X. Therefore, the blade 12 can be stably held by the brush body 11.

In addition, with the above configuration, if the cutting edge 12a becomes dull, the blade 12 can be pulled out of the case 20 and the blade 12 can be attached to the case 20 with the previously exposed cutting edge 12a facing backward. This allows the hair-cutting brush 10 to be used again with a new cutting edge 12a.

(6) The number of blades 12 is four.
With this configuration, even if the cutting edge 12a of one of the blades 12 assumes a position that makes it difficult for it to contact the hair at a suitable angle, the cutting edges 12a of the other three blades 12 can easily contact the hair at a suitable angle, thereby making it possible to cut the hair more stably.

(7) The grip portion 11B has a stepped portion 23A. This allows the user to easily hook the tips of their fingers onto the stepped portion 23A. This further stabilizes the position of the hair-cutting brush 10 when moving the hair-cutting brush 10.

(8) The grip portion 11B has the grooves 23B and 33B. Therefore, the grooves 23B and 33B can prevent the user's hand from slipping.
(Example of change)
The above embodiment can be modified as follows, for example. The present embodiment and the following modifications can be combined with each other to the extent that there is no technical contradiction.

The blade 12 may be fixed to the brush body 11 so as not to be detachable. In this case, the cap 30 may be omitted.
The hair-cutting brush 10 may include a handle extending from the brush body 11 in the second direction Y. In this case, the grip portion 11B may be omitted.

The number and size of the pin-shaped portions 29 may be changed as appropriate.
The pin-shaped portion 29 may be omitted.
The number of blades 12 is not limited to four, but may be two, three, or five or more.

- The arrangement of multiple blades 12 does not have to be plane symmetrical.

LIST OF SYMBOLS 10...Hair-cutting brush 11...Brush body 11a...Bottom surface 11b...Outer peripheral surface 11B...Grip portion 12...Blade 12a...Blade tip 12b...End surface 20...Case 21...Case body portion 22...Bottom wall 23...Circumferential wall 23a...Outer peripheral surface 23A...Step portion 23B...Groove portion 24...Insertion portion 24a...Insertion hole 25...Storage portion 25a...Side wall portion 25b...Bottom wall portion 25c...Opening 26...Rib 27...Engagement hole 28...Bearing portion 28a...Hole 29...Pin-shaped portion 30...Cap 32...Top wall 33...Circumferential wall 33a...Outer peripheral surface 33c...Slit 33B...Groove portion 35...Abutment portion 37...Engagement portion 37a...Claw portion 37b...Protrusion portion 38: Notch portion 41: Blade body 42: Covering member 42a: Plate portion 42b: Protective portion

Claims (5)

a brush body having a bottom surface;
a plurality of blades having cutting edges and protruding from the bottom surface in a first direction;
The plurality of blades are arranged at intervals in a second direction perpendicular to the first direction,
The blade tips of the plurality of blades are provided on one side of the blades in a third direction perpendicular to both the first direction and the second direction,
At least two of a plurality of virtual straight lines extending along the direction of the blade tips of the plurality of blades intersect with each other.
Hair cutting brush. The plurality of blades are arranged symmetrically with respect to a virtual plane along both the first direction and the third direction.
2. The hair-cutting brush of claim 1. The brush body includes a plurality of pin-shaped portions that protrude from the bottom surface in the first direction and are spaced apart from one another,
The pin-shaped portion is disposed on the one side of the blade in the third direction.
2. The hair-cutting brush of claim 1. A gripping portion having an uneven shape is provided on a portion of the outer circumferential surface of the brush body corresponding to a position where the plurality of blades are provided in the second direction.
2. The hair-cutting brush of claim 1. The brush body includes a case having the bottom surface, and a cap attached to the case so as to cover a side of the case opposite to the bottom surface,
The case includes a case body having a plurality of insertion holes through which the plurality of blades are detachably inserted, and a plurality of storage sections protruding from the bottom surface in the first direction and storing the plurality of blades with the blade tips exposed,
The cap has an abutment portion that abuts against an end surface of the blade protruding from the case to restrict movement of the blade.
5. A hair-cutting brush according to any one of claims 1 to 4.

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