JPH0636577U - Exposed structure of the cutting edge in a three-blade safety razor - Google Patents

Abstract

(57) [Summary] [Structure] The convex portions 20, 2 are formed on the first and second clasps 17, 18 and on the guard along the extending direction thereof.
1, 24 are juxtaposed. The guide surfaces 20a, 21a, 2 on the respective convex portions 20, 21, 24 are provided on the third attachment portion 19.
The guide surface 25 is provided on a plane Q that is lower than the plane P connecting the 4a by an interval L. Blade edge 4 of each blade 4, 5, 6
a, 5a and 6a are between the guide surface 24a of the convex portion 24 of the guard and the guide surface 20a of the convex portion 20 of the first holding portion 17, the convex portions 20 of the first and second holding portions 17 and 18, 21 between the guide surfaces 20a and 21a, and the convex portion 21 of the second attachment portion 18.
It is exposed between the guide surface 21a and the guide surface 25 of the third attachment portion 19. [Effect] Not only is the stability and safety improved during shaving, but the guide surface 25 of the third attachment part 19 is formed so that the blade edge 6a of the third blade body 6 can be used for deep shaving. ,
Even a very short beard left unshaving by the first and second blade bodies 4, 5 can be surely shaving by the third blade body 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a T-type three-blade safety razor in which a razor head is provided on the upper end of a holder, and relates to an exposed structure of the blade tip of each blade.

[0002]

[Prior art]

 As a conventional three-blade safety razor, for example, as shown in Japanese Utility Model Laid-Open No. 58-3177, there is one in which three blades are sandwiched between a blade base and a top plate via a spacer. . With this 3-blade safety razor, you can shave while the skin surface is applied between the guard of the blade base and the guide surface of the top plate, but the shaving operation is not possible due to the small gap between them. There was a risk of instability.

By the way, in a conventional two-blade safety razor, for example, as shown in Japanese Utility Model Publication No. 58-130671, two blades are sandwiched between a blade base and a top plate via a spacer. There is something worn. This two-blade safety razor can also shave while the skin surface is applied between the guard of the blade base and the guide surface of the top plate, but since the gap between them is narrow, the shaving operation is not possible. There was a risk of instability. Therefore, for example, as shown in Japanese Examined Patent Publication No. 59-12307, a flat type two type in which the distance between the guard of the blade base and the guide surface of the top plate is increased and the distance between the two blades is also increased. There is also a single-blade safety razor. This flat type two-blade safety razor is very unstable when shaving. Therefore, as shown in, for example, Japanese Patent Laid-Open No. 61-2887 and Japanese Utility Model Laid-Open No. 4-25664, a flat type two-blade safety razor is provided with a guide surface on the top plate between the two blade edges when shaving. Some have improved stability. In addition, as shown in, for example, Japanese Utility Model Application Laid-Open No. 4-36972, Japanese Patent Application Laid-Open No. 4-117987, Japanese Patent Application Laid-Open No. 4-117988, Japanese Patent Application Laid-Open No. 4-126182, and Japanese Patent Application Laid-Open No. 4-146789, a blade is used. There is also one that improves safety when shaving by arranging convex parts in parallel on the guard surface of the table and the guide surface of the top plate.

[0004]

[Problems to be solved by the device]

 The present applicant has focused on the structure of the flat type two-blade safety razor in view of the drawbacks of the conventional three-blade safety razor. In that case, there is no problem in providing the guide surface of the top plate between the cutting edges, but regarding the provision of the convex portion on the guard of the blade base or the guide surface of the top plate, stability and safety during shaving are ensured. In addition to taking into consideration the above, it was necessary to consider the unique action of the three-blade safety razor. That is, in the three-blade safety razor, each blade body shaves a beard in sequence, so the beard shaving by the third blade body has a very short length. Therefore, the blade of the third blade must be set so that it can shave more deeply than the blade of the first blade.

Therefore, as a result of difficulty, the present applicant set the arrangement of the convex portions provided on the guide surface of the top plate so as to match the three-blade safety razor, and not only the stability and safety at the time of shaving but also the The present invention has improved shaving taste.

[0006]

[Means for Solving the Problems]

 As shown in the drawings of the embodiments described later, the three-blade safety razor according to the present invention comprises a blade base 2, a top plate 3, and blade bodies 4, 5, 6 therebetween. In the blade stand 2, the first, second and third blade body mounting portions 9, 10, 11 along the guard 7 are arranged side by side, and the first, second and third blade body mounting portions are arranged on them. Blades 4, 5 and 6 are mounted. In the top plate 3, first, second and third clasps 17, 18, 19 are arranged in parallel. The top plate 3 is superposed on the blade base 2, and the blade parts 4, 5, 6 on the blade mounting parts 9, 10, 11 are held by the respective holding parts 17, 18, 19 of the top plate 3. Has been done. Whiskers removing holes 12, 13 and 14 are provided between the guard 7 and the first blade mounting portion 9 and between the blade mounting portions 9, 10 and 11, respectively.

On the first and second clasps 17, 18 and the guard 7, projections 20, 21, 24 are juxtaposed along their extending direction. A guide surface 25 is provided on the third attachment portion 19 on a plane Q which is lower than the plane P connecting the guide surfaces 20a, 21a, 24a on the respective convex portions 20, 21, 24 by an interval L. The blade edges 4a, 5a, 6a of the blade bodies 4, 5, 6 are provided between the guide surface 24a of the convex portion 24 of the guard 7 and the guide surface 20a of the convex portion 20 of the first clamping portion 17, the first and the second. Between the guide surfaces 20a and 21a of the convex portions 20 and 21 of the second holding portions 17 and 18, and between the guide surface 21a of the convex portion 21 of the second holding portion 18 and the guide surface 25 of the third holding portion 19. Exposed between.

[0008]

[Action]

 Now, in a continuous shaving operation from the first blade body 4 to the third blade body 6 via the second blade body 5, even if the skin surface is a curved surface, first the blade edge of the first blade body When shaving with 4a, the guide surface 24a on the guard 7 and the guide surface 20a on the first attachment part 17 come into contact with the skin surface to support the razor head 1 with good stability. After that, when shaving with the cutting edge 5a of the second blade body 5, the guide surface 20a on the first holding portion 17 and the guide surface 21a on the second holding portion 18 contact the skin surface and the razor is cut. The head 1 is also supported with good stability. Furthermore, when shaving with the cutting edge 6a of the third blade body 6, the guide surface 21a of the second holding portion 18 and the guide surface 25 of the third holding portion 19 contact the skin surface and the razor head 1 Is also supported with good stability.

Further, the cutting edges 4a, 5a, 6a of the blade bodies 4, 5, 6 contact the skin surface, and the guide surfaces 20a, 21a, 24a of the protrusions 20, 21, 24 also contact the skin surface. Therefore, in each of the guide surfaces 20a, 21a, 24a and its vicinity, the intrusion of the cutting edges 4a, 5a, 6a into the skin surface is reduced as compared with the other portions, and the shaving taste is softened and the safety is improved. .

In the three-blade safety razor having such characteristics, particularly in the present invention, the guide surface 25 of the third holding portion 19 has the convex portions of the first and second holding portions 17, 18. Since the distance L is lower than the guide surfaces 20a, 21a on the 20, 20, the shaving taste is improved. Therefore, the extremely short whiskers left unshaved by the cutting edges 4a, 5a, 6a of the first and second blade bodies 4, 5 can be surely shaved.

[0011]

Embodiment A flat type three-blade safety razor according to an embodiment of the present invention will be described below with reference to the drawings.

The razor head 1 is removably attached to the upper end of a holder (not shown), and includes a blade base 2, a top plate 3, and first to third blade bodies 4, 5, 6 between them. Become. A guard 7 composed of a large number of comb teeth 8 is formed at the front end of the blade base 2, and the comb teeth 8 are juxtaposed forward and arranged side by side in the left-right direction. A first blade mounting portion 9, a second blade mounting portion 10, and a third blade mounting portion 11 are provided on the blade base 2 so as to extend in the left-right direction along the guard 7. The guard 7 and the blade mounting portions 9, 10 and 11 are juxtaposed on the blade base 2 in the front-rear direction. Each comb tooth 8 of the guard 7 projects forward from the first blade mounting portion 9, and a whiskers exclusion hole 12 is formed between each comb tooth 8. Further, whiskers removing holes 13 and 14 are also formed between the blade mounting portions 9, 10 and 11.

The first to third blade bodies 4, 5 and 6 are mounted on the mounting surfaces 9a, 10a and 11a of the first to third blade body mounting portions 9, 10 and 11 and their blade edges 4a. , 5a, 6a project above the whiskers removing holes 12, 13, 14 and extend in the left-right direction along the guard 7 and the blade mounting portions 9, 10, 11.

In the top plate 3, a first holding portion 17, a second holding portion 18, and a third holding portion 19 are provided between the left and right side frame portions 15 and 16. The top plate 3 is superposed on the blade base 2, and the blade bodies 4, 5, 6 on the blade mounting portions 9, 10, 11 are held by the holding portions 17, 18, 19, respectively. There is.

A large number of protrusions 20 and 21 are respectively provided on the first holding portion 17 and the second holding portion 18 so as to project upward and are arranged side by side in the left-right direction. Recesses 22 and 23 are formed between the respective protrusions 21. A protrusion 24 is formed on each comb tooth 8 of the guard 7 so as to project upward. The third attachment portion 19 does not have such protrusions 20 and 21, and the guide on the third attachment portion 19 on the plane Q connecting the bottom surface 22a of each recess 22 and the bottom surface 23a of each recess 23. A surface 25 is formed. The guide surfaces 20a, 21a, 24a on each of the convex portions 20, 21, 24 are above this plane Q, and the plane P connecting the guide surfaces 20a, 21a, 24a and the plane Q below the plane P are connected. The blade edges 4a, 5a, 6a of the blade bodies 4, 5, 6 are located therebetween. Further, the cutting edges 4a, 5a, 6a of the blade bodies 4, 5, 6 are located between the guide surface 24a of the convex portion 24 of the guard 7 and the guide surface 20a of the convex portion 20 of the first sandwiching portion 17 at the first position. And between the guide surfaces 20a and 21a of the convex portions 20 and 21 of the second clamping portion 17 and 18, and between the guide surface 21a of the convex portion 21 of the second clamping portion 18 and the guide surface 25 of the third clamping portion 19. It is exposed between and.

The center line A of the convex portion 24 on each comb tooth 8 is on the center line B of each convex portion 21 on the second sandwiching portion 18, and these center lines A and B are the first sandwiched portions. It passes through the center between the center lines C of the respective convex portions 20 of the attachment portion 17. The center line C passes through the center between the center lines A and the center between the center lines B 1. The widths W of the convex portions 20, 21, 24 are equal to each other, and the width S of the whiskers removing hole 12 between the comb teeth 8 and the width S of the concave portions 22, 23 are equal to each other. The width S is almost twice the width W.

In the continuous shaving operation from the first blade body 4 to the third blade body 6 via the second blade body 5, even if the skin surface is a curved surface, the first blade body When shaving with the cutting edge 4a of the body, the guide surface 24a on the guard 7 and the guide surface 20a on the first attachment portion 17 come into contact with the skin surface to support the razor head 1 with good stability. After that, when shaving with the cutting edge 5a of the second blade body 5, the guide surface 20a on the first holding portion 17 and the guide surface 21a on the second holding portion 18 contact the skin surface and the razor is cut. The head 1 is also supported with good stability. Furthermore, when shaving with the cutting edge 6a of the third blade body 6, the guide surface 21a of the second holding portion 18 and the guide surface 25 of the third holding portion 19 contact the skin surface and the razor head 1 Is also supported with good stability. That is, in addition to the guide surface 24a on the guard 7 and the guide surface 25 on the third holding portion 19, there are guide surfaces 20a, 21a between the cutting edges 4a, 5a, 6a, so that both guides are provided as described above. The surfaces 24a, 20a or both guide surfaces 20a, 21a or both guide surfaces 21a, 25 can contact the skin surface at the same time to provide stability to the shaving operation.

Further, the cutting edges 4a, 5a, 6a of the blade bodies 4, 5, 6 contact the skin surface, and the guide surfaces 20a, 21a, 24a of the convex portions 20, 21, 24 also contact the skin surface. Therefore, in each of the guide surfaces 20a, 21a, 24a and its vicinity, the intrusion of the cutting edges 4a, 5a, 6a into the skin surface is reduced as compared with the other portions, and the shaving taste is softened and the safety is improved. . On the cutting edges 4a, 5a of the first and second blade bodies 4, 5 which are adjacent to the whiskers removing holes 12 between the respective comb teeth 8 and the respective concave portions 22, 23 on the first and second clamping portions 17, 18. Correspondingly, since the convex portions 20, 21, and 24 are provided, even if the width S of the whiskers removal hole 12 and the concave portions 22 and 23 is widened to maintain the shaving taste, the convex portions 20, 21 and , 24 makes the shaving taste softer and further improves safety.

In the flat type three-blade safety razor having such characteristics, particularly in the present embodiment, the convex portions such as the convex portions 20 and 21 on the first and second clasping portions 17 and 18 are provided. Is not on the third holding portion 19, and the guide surface 25 on the third holding portion 19 is the guide surfaces 20a, 21a on the convex portions 20, 21 of the first and second holding portions 17, 18. Since the distance is smaller than the distance L 2 by a distance L, the plane R connecting the guide surface 21a on the second holding portion 18 and the guide surface 25 on the third holding portion 19 is a blade edge of the third blade body 6. It becomes closer to 6a, and the better the shaving taste is. Therefore, the extremely short whiskers left unshaved by the cutting edges 4a and 5a of the first and second blade bodies 4 and 5 can be surely shaved.

[0020]

[Effect of device]

 According to the three-blade safety razor according to the present invention, in addition to the guide surfaces 24a and 25 of the guard 7 and the third attachment portion 19, the guide surfaces 20a of the second and third attachment portions 18 and 19 are provided. , 21a are also provided between the cutting edges 4a, 5a, 6a, the razor head 1 is supported with good stability, the shaving operation is provided with stability, and the shaving taste can be improved. In addition, since the convex portions 20, 21, 24 on the first and second sandwiching portions 17, 18 and the guard 7 correspond to the cutting edges 4a, 5a, 6a of the blade bodies 4, 5, 6, respectively. The whole of the cutting edges 4a, 5a, 6a does not deeply penetrate into the skin surface and come into contact therewith, so that the safety is improved.

In addition to these features, in the three-blade safety razor according to the present invention, the guide surface 25 of the third clasping portion 19 is formed so that the cutting edge 6a of the third blade body 6 can be deeply shaved. Therefore, even a very short beard left unshaving by the first and second blade bodies 4, 5 can be surely shaving by the third blade body 6.

As described above, according to the present invention, the shaving operation is performed in consideration of the peculiar action of the three-blade safety razor, so that the shaving operation is stable and safe and has a good shaving taste.

[Brief description of drawings]

FIG. 1 is a plan view showing a razor head of a flat type three-blade safety razor according to this embodiment.

FIG. 2 is an enlarged sectional view taken along line XX of FIG.

FIG. 3 is an enlarged cross-sectional view taken along line YY of FIG.

[Explanation of symbols]

1 razor head, 2 blade base, 3 top plate, 4 first blade, 4a blade tip, 5 2nd blade body, 5a blade tip, 6 3rd blade body, 6a blade tip, 7 guard, 8 comb tooth, 9
1st blade mounting part, 9a mounting surface, 10 2nd blade mounting part, 10a mounting surface, 11 3rd blade mounting part, 11
a mounting surface, 12 whiskers exclusion hole, 13 whiskers exclusion hole, 14 whiskers exclusion hole, 17 first clasp part, 18
2nd holding part, 19 3rd holding part, 20 convex part, 2
0a guide surface, 21 convex portion, 21a guide surface, 22
Recess, 22a bottom, 23 recess, 23a bottom, 2
4 convex portions, 24a guide surface, 25 guide surface.

Claims (1)

[Scope of utility model registration request] 1. A first, a second and a third along a guard (7)
The blade mounting portions (9, 10, 11) of the above are installed in parallel on the blade base (2), and the top plate (3) superposed on the blade base (2).
The first and the first mounted on each blade mounting part (9, 10, 11)
The first, second and third clamping parts (17, 18, 19) for clamping the second and third blade bodies (4,5, 6) are arranged side by side, and the guard (7) and the first The whiskers exclusion holes (12, 13, 14) are provided between the blade mounting portion (9) and the blade mounting portions (9, 10, 11), respectively, and the first and second On the clasps (17, 18) and on the guard (7) along the extending direction of the protrusions (2
0, 21, 24) are arranged side by side, and the guide surface (20) on each convex portion (20, 21, 24) is provided on the third clasping portion (19).
a, 21a, 24a) is provided with a guide surface (25) on a plane (Q) which is lower than the plane (P) connecting the blades (4, 5, 6) by a distance (L). , 6a)
The guide surface (24a) of the convex portion (24) of the guard (7) and the guide surface (20) of the convex portion (20) of the first attachment portion (17).
a), between the guide surfaces (20a, 21a) of the protrusions (20, 21) of the first and second clamps (17, 18), and the protrusions () of the second clamps (18). 21) guide surface (21
An exposed structure of a cutting edge in a three-blade safety razor, which is exposed between a) and the guide surface (25) of the third attachment part (19).