JP4302363B2 - Safety razor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a safety razor having a plurality of blades, and more particularly to a structure that supports each blade with a space therebetween.
[0002]
[Prior art]
A safety razor having a plurality of blades has a beard or cream that accumulates between the blades during use. Therefore, a safety razor has been proposed that attempts to efficiently eliminate these. Japanese Patent Application Laid-Open No. 2000-308771 discloses a support structure for supporting a plurality of blades apart. This support structure has a plurality of blades and a frame that supports the plurality of blades, and a plurality of vertical ribs are disposed between the open rear portions of the frames, and the ribs have slots. And the slots exist at different heights, and the trailing edge of the blade is mounted in the slots.
[0003]
[Problems to be solved by the invention]
The conventional support structure is as described above, and the trailing edge of the blade is attached in the slot provided in the rib. As described above, since the support structure for fixing the blade by the slot is difficult to manufacture and mechanically assemble some of the support structures separately, by fixing the blade in a predetermined position and injecting plastic. The entire support structure is molded with the blade. The cartridge replacement blade is manufactured by this injection molding.
[0004]
However, a mold for manufacturing the entire cartridge replacement blade integrally by injection molding has a drawback that it is very complicated and expensive. Further, it is not easy to fix the plurality of blades at intervals during injection molding, and the yield may be deteriorated. Accordingly, an object of the present invention is to provide a structure in which the support structure is divided into two members and can be manufactured and mechanically assembled so that the mold is not so complicated. Furthermore, an object of the blade is to enable mechanical assembly and prevent the yield from deteriorating.
[0005]
Furthermore, in the safety razor having a plurality of blades, each blade is partially fixed in the middle to efficiently discharge the whiskers clogged between the blades in the rear, and the interval between the blades is maintained. Therefore, there is a possibility that the blade is bent at a portion where the blade is not fixed. Further, when assembling a safety razor having a plurality of blades, the blades are piled up, but the blades piled before the blades are fixed may be displaced by vibration, resulting in poor yield. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a safety razor in which a safety razor can be easily and reliably assembled so that such inconvenience does not occur, and the blade after assembly is securely fixed.
[0006]
[Means for Solving the Problems]
According to claim 1 of the present invention, a plurality of three or more blades are vertically stacked between a head blade base and a top plate, and projecting shafts protruding from the top plate are passed through holes provided in the blades to the blade base. The clamping table connected to the blade base is provided with a clamping surface that abuts each blade except the lowermost blade and clamps the blade between itself and the top plate. Is a safety razor that is in contact with each blade except the uppermost blade and has a clamping surface that clamps each blade between the blade and the blade, and the blades are clamped between the blade and the top plate. The blades are overlapped so that the upper blade hole is displaced backward with respect to the lower blade hole by shifting each blade, and the clamping base passes through the hole of each blade except the uppermost blade. The protruding shaft and the holding table hold the respective blades through the same hole in a state where they are in contact with the uppermost blade and the holding table exists on the front side of the protruding shaft.
[0007]
In the second aspect, elements having the same outer shape including the hole of each blade are added to the first aspect.
[0008]
According to a third aspect of the present invention, an element in which the insertion spacer is inserted and fixed between the blades from the opening at the rear end of the head is added to the first or second aspect.
[0009]
According to a fourth aspect of the present invention, a plurality of insertion pieces project from the base end portion of the insertion spacer at different heights, and each insertion piece is added to the corresponding blade. It is the structure which was made.
[0010]
According to a fifth aspect of the present invention, at least one of the upper and lower adjacent insertion pieces is provided in the horizontal direction, and the upper and lower adjacent insertion pieces are arranged alternately in the horizontal direction. This is an added configuration.
[0011]
【The invention's effect】
According to the first aspect of the present invention, a plurality of blades of three or more are vertically stacked between the head blade base and the top plate, and projecting shafts protruding from the top plate are coupled to the blade base through holes provided in the blades. The clamping table protruding from the blade base is provided with a clamping surface that abuts each blade except the lowermost blade and clamps the blade between itself and the top plate. A clamping surface is provided to abut against each blade except the blade and sandwich the blade between the blade and the blade, and the blades are clamped at a distance from each other between the blade and the top plate. Each blade is stacked so that the hole of the upper blade is shifted backward with respect to the hole of the lower blade, and the clamping table contacts the uppermost blade through the hole of each blade except the uppermost blade, In addition, the projecting shaft and the sandwiching table sandwich each blade through the same hole in a state where the sandwiching table exists on the front side of the projecting shaft. Therefore, the mold is not so complicated, and it is not necessary to fix the blade and perform injection molding. Therefore, the mold is simple and can be manufactured at a lower cost than the conventional product. Also, the yield does not deteriorate.
[0012]
As described above, in recent years, a safety razor having a plurality of blades is partially fixed in the middle of each blade in order to efficiently discharge the whiskers clogged between the blades in the rear, and the interval between the blades is maintained. ing. Therefore, there is a possibility that the blade is bent at a portion where the blade is not fixed. According to a second aspect of the present invention, the insertion spacer is inserted and fixed between the blade from the opening at the rear end of the head. Therefore, each blade can be securely fixed simply by manufacturing the insertion spacer and attaching it to a safety razor.
[0013]
According to the fourth aspect, at least one of the upper and lower adjacent insertion pieces is provided in the horizontal direction, and the upper and lower adjacent insertion pieces are alternately arranged in the horizontal direction. Therefore, the insertion piece can be easily inserted into the head as compared with the case where the insertion pieces adjacent vertically are completely overlapped.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. The drawing relates to a cartridge replacement blade having three blades, and this cartridge replacement blade corresponds to the head 53 of a safety razor. The top plate 1 has a blade pressing portion 4 extending between both side surface portions 3, 3, and a guard portion main body 5 is between the front end of both side surface portions 3, 3 and the blade pressing portion 4 of the top plate. It extends through the opening 6. The blade edge of the blade is exposed from the opening 6. Further, a shaving aid 49 is fixed in a recess 50 provided on the upper surface of the blade pressing portion 4. Since the two protrusions are provided at the bottom of the recess 50, the shaving aid 49 is firmly fixed. Of course, the present invention is not limited to the cartridge replacement blade, and may be a safety razor in which the blade base and the handle are integrally formed.
[0015]
FIG. 4 is a bottom view of the top plate 1. As shown in FIG. 4, four projecting shafts 7 are provided side by side on the bottom surface of the blade pressing portion 4. The projecting shaft 7 protrudes as an integral projection on the bottom surface of the top plate together with the tool post insertion portion 13. Further, two top-plate-side blade clamping portions 8 are provided on the bottom surfaces of the side surface portions 3 and 3 at positions closer to the front than the projecting shaft 7. As described above, the protruding shaft 7 and the blade holding portion 8 on the top plate side are formed in a step shape, and the step has two steps of a second holding surface and a first holding surface . The protruding shaft 7 has the second clamping surface 9 at the front and the first clamping surface 10 at the rear. The blade clamping portion 8 on the top plate side also has the second clamping surface 11 at the front and the first clamping surface 12 at the rear. As will be described later, the projecting shaft 7 and the second sandwiching surface and the first sandwiching surface of the blade sandwiching portion 8 on the top plate side serve to sandwich each blade.
[0016]
As described above, reference numeral 13 denotes a blade base insertion portion that protrudes from the second clamping surface 9 of the protruding shaft , and is inserted between the blade and the hole of the blade base to fix the blade between the blade base and the top plate 1. belongs to. The cross section is not limited to a circle but may be a rectangle. In the case of a quadrangle, the width is preferably the same as the protruding shaft 7 . Reference numeral 14 denotes a protrusion provided on the bottom surface of the guard unit body 5 for inserting the blade base 2 and the top plate 1 through the hole of the blade base. Moreover, since the shaving aid 33 exists on the surface of the guard part main body 5, a shaving can be performed smoothly.
[0017]
FIG. 8 is a top view of the blade base 2, and as shown in this figure, four clamping tables 16 are provided in the middle of the top surface. Four blade clamping portions 17 are provided side by side along the rear end portion of the upper surface. Projecting shaft 7 and the top plate side of the blade nip portion 8 in the same manner as Kyojidai 16 and blade holding portions 17 described above is also formed in a stepped shape, stair has two clamping surface of the second clamping surface and the first clamping surface ing. The clamping table 16 has a second clamping surface 18 on the rear side and a first clamping surface 19 on the front side. The blade clamping portion 17 also has the second clamping surface 20 at the rear and the first clamping surface 21 at the front.
[0018]
Reference numeral 22 is a hole through which the above-described blade insertion portion 13 is inserted. Reference numeral 23 denotes a hole provided in the guard base 24 of the blade base for inserting the above-described projection 14 of the top plate. An elastomer portion 31 is provided so as to rise along the tip of the guard base portion 24. Reference numeral 52 denotes a protruding portion of the elastomer portion 31, and the elastomer portion 31 is firmly fixed to the blade base 2 by engaging the protruding portion with the groove of the blade base 2. The top surface of the guard portion main body 5 is fitted into a groove 32 formed by the guard base portion 24 and the elastomer portion 31, so that the surface of the guard portion is the same as the surface of the elastomer portion 31. The surface of the shaving aid 33 is formed to extend adjacent to each other in parallel.
[0019]
There are two types of blades used for the cartridge replacement blade, and the blade shown in FIG. 10 is used as the upper blade 25 and the intermediate blade 26. The blade of FIG. 10 is provided with five holes 28 arranged side by side, and notches 30 and 30 are provided at both ends. The blade shown in FIG. 11 is used as the lower blade 27. The blade of FIG. 11 is provided with two holes 29 arranged side by side, and notches 43 and 43 are provided at both ends. However, the blade of the present invention is not limited to such a combination, and may be any combination. Thus, for example, all the blades may be those of FIG. 10 or those of FIG.
[0020]
FIG. 12 shows the assembling method of the present invention. As shown in the figure, the top plate 1 is placed upside down. First, the upper blade 25 is placed on the bottom surface 15 of the top plate 1 (reference numeral 15 is shown in FIG. 7). At this time, the protruding shaft 7 is inserted into the holes 28, 28 provided on both sides of the center among the five holes 28 of the upper blade.
[0021]
Next, the intermediate blade 26 is placed in a state shifted slightly forward from the upper blade 25. By shifting the intermediate blade 26, if the upper blade 25 is moved vertically downward and superimposed on the intermediate blade 26, the rear adjacent portion 34 of the hole of the upper blade and the rear adjacent portion of the hole of the intermediate blade A non-polymerized portion is formed without overlapping with 35. When the upper blade is returned to its original position, the portion is defined as a non-overlapping portion , and the presence of the non-overlapping portion causes the blade 28 to be inserted into the hole 28 and the second insertion surface 13 of the projecting shaft 7. 9, the first clamping surface 10 is blocked by the rear side adjacent portion 35 of the hole of the intermediate blade and functions to clamp the intermediate blade. That is, the rear side adjacent portion 35 of the hole of the intermediate blade is clamped by the first clamping surface 10 of the projecting shaft . Such clamping is also performed between the rear side adjacent portions 36 and 36 of the notches 30 and 30 at both ends and the projecting shafts 7 and 7 provided on the bottom surfaces of the side surface portions 3 and 3 of the top plate.
[0022]
By shifting the intermediate blade 26, the front edge portion 37 of the upper blade and the front edge portion 38 of the intermediate blade do not completely overlap, and a non-overlapping portion is generated. Due to the presence of the non-overlapping portion , both ends of the front edge portion 38 of the intermediate blade are clamped by the first clamping surface 12 of the 8-blade clamping portion on the top plate side .
[0023]
After placing the intermediate blade 26 as described above, the lower blade 27 is placed in a state shifted slightly forward from the intermediate blade 26. By shifting the lower blade 27, the rear adjacent portion 35 of the hole of the intermediate blade and the rear adjacent portion 42 of the hole of the lower blade are not overlapped, and a non-overlapping portion is generated. Due to the presence of the non-overlapping portion, only the blade insertion portion 13 is inserted into the hole 29, and the second clamping surface 9 is blocked by the rear adjacent portion 42 of the hole of the lower blade, and the lower blade 27 is prevented from being inserted. It acts to pinch . That is, the rear side adjacent portion 42 of the hole of the lower blade is clamped by the second clamping surface 9 of the projecting shaft. Such clamping is also performed between the rear side adjacent portions 36 and 36 of the notches 43 and 43 at both ends and the projecting shafts 7 and 7 provided on the bottom surfaces of the side surface portions 3 and 3 of the top plate.
[0024]
By shifting the lower blade 27, the front edge portion 38 of the intermediate blade 26 and the front edge portion 39 of the lower blade 27 do not overlap with each other, and a non-overlapping portion is generated. Due to the presence of the non-overlapping portion , both ends of the front edge portion 39 of the lower blade are clamped by the second clamping surface 11 of the blade clamping portion 8 on the top plate side .
[0025]
As described above, after setting the upper blade 25, the intermediate blade 26 and the lower blade 27 on the top plate 1 placed upside down, the blade base 2 is coupled to the top plate 1. The turret 2 is also turned upside down, the turret insertion portion 13 is inserted into the hole 22 of the turret, the projection 14 is inserted into the hole 23 of the turret, and the blade insertion portion 13 and the projection 14 protruding to the bottom surface of the turret The top plate 1 and the blade base 2 are joined by crushing the tip.
[0026]
When the top plate 1 and the turret 2 are combined, the second clamping surface 20 of the blade clamping part 16 provided on the upper surface 46 (lower surface in FIG. An intermediate blade that is in pressure contact with the rear edge portion 40 of the upper blade that is a non-overlapping portion with the blade 26 and the rear side adjacent portion 34 of the hole , and the first clamping surface 21 is a non-overlapping portion between the intermediate blade 26 and the lower blade 27. It press-contacts to the rear edge part 41 and the back side adjacent part 35 of a hole . Further, the upper surface 46 of the blade base is pressed against the rear side adjacent portion 42 of the hole of the lower blade.
[0027]
At the same time, the second clamping surface 18 of the clamping table 16 passes through the hole 29 of the lower blade and the hole 28 of the intermediate blade and comes into pressure contact with the front adjacent portion 45 of the hole of the upper blade, so that the first clamping surface 19 is lowered. It passes through the hole 29 of the blade and comes into pressure contact with the front side adjacent portion 47 of the hole of the intermediate blade. Further, the upper surface 46 of the blade base is pressed against the front side adjacent portion 48 of the hole of the lower blade. Further, the clamping table 16 is in pressure contact with the front side adjacent portion 44 of the notch of each blade.
[0028]
By assembling the cartridge replacement blade as described above, the rear adjacent portions 34, 35, 42 of the holes of each blade are sandwiched in a pressure contact state from above and below, and both ends of the front edge portions 37, 38, 39 of each blade are also vertically It is pressed from. Further, the front side adjacent portions 45, 47, and 48 of the hole of each blade are pressed from below, and the front side adjacent portion 45 of the hole of the upper blade is also pressed from above by the blade pressing portion 4. By pressing the blades in this way, the blades can be securely fixed. Of course, the present invention is not limited to three blades, and may be two blades or four or more blades. When there are four or more blades, the number of steps in the blade clamping portion may be increased.
[0029]
As shown in FIG. 1 or FIG. 13, the second clamping surface and the first clamping surface of the stepped protruding shaft 7, the top plate side blade clamping portion 8, the clamping table 16, and the blade clamping portion 17 are slightly inclined. As a result, each blade becomes non-parallel, and an extension line extending from each blade to the tip of the blade edge intersects at the tip of the blade edge. Further, if the inclinations of the second clamping surface and the first clamping surface are reversed, the extension line of each blade can be set to open toward the tip of the blade edge. The inclination angle of the intermediate blade 26 with respect to the lower blade 27 and the inclination angle of the upper blade 25 with respect to the intermediate blade 26 may be about 5 degrees or less, respectively. Therefore, it may be 1 degree, 2 degrees, 3 degrees or 4 degrees. Preferably it is about 3 degrees. From this, the inclination angle of the upper blade with respect to the lower blade 27 is about 10 degrees or less. However, it goes without saying that the present invention is not limited to this value.
[0030]
FIGS. 14 to 23 are diagrams embodying the invention of claim 19. A configuration of a safety razor having three blades, in which the upper blade 54, the intermediate blade 55, and the lower blade 56 are shifted and overlapped is substantially the same as that of the above-described embodiment, and therefore will be omitted. As shown in FIG. 21, the blade support portions 57 and 57 are different from each other in that the blade support portions 57 and 57 are rounded.
[0031]
As shown in FIG. 16, the spacer member 58 is in the form of a small piece and is integrally formed of plastic, an insertion hole 59 is provided at the center, and an upward projection 60 is provided at the rear end. The insertion hole 59 may be a through hole or a concave shape. The protrusion 61 inserted into the insertion hole 59 is provided on the bottom surface of the top plate 62. As shown in FIG. 21, a pedestal 63 is provided at the base of the protrusion 61. The reason why the pedestal portion 63 is provided is that the pedestal portion 63 is interposed between the upper blade 54 and the intermediate blade 55, and the upper blade 54 and the intermediate blade 55 are similar to the stepped step portions of the blade support portions 57, 57. This is to keep a gap between them.
[0032]
Auxiliary protrusions 64, 64 are integrally provided outside the blade support portions 57, 57, and step portions of a first step portion 65 and a second step portion 66 are provided stepwise. The auxiliary protrusions 64 and 64 have a function that the step portion of the second step portion presses against the lower blade 56 and securely fixes the lower blade.
[0033]
Next, a method for assembling the spacer member 58 and other members will be described. FIG. 22 shows a state in which the top plate 1 is turned upside down, and the upper blade 54 and the intermediate blade 55 are overlapped with an interval. As shown in FIG. 14, the protrusion 60 of the spacer member contacts the upper blade 54 through the non-overlapping portion of the intermediate blade 55 and the upper blade 54, and the protrusion 61 is inserted into the insertion hole 59 of the spacer member. . In this state, there is no possibility that the intermediate blade 55 is pressed by the spacer member 58 and displaced. Thereafter, the lower blade 56 is further overlapped, and the blade inserts 67 and 67 on both sides and the projections 68 and 68 on the front end are inserted and fitted into the holes of the blade base, and assembled as shown in FIG.
[0034]
FIG. 18 shows the upper blade 54, the central hole 69 is a hole through which the protrusion 61 is inserted, and the holes 70, 70 on both sides thereof are holes through which the blade support portions 57, 57 are inserted, and the outer holes 71, 71 are inserted. Is a hole through which the auxiliary protrusions 64 are inserted. FIG. 19 shows an intermediate blade 55, a central hole 72 is a hole through which the protrusion 61 is inserted, and holes 73, 73 on both sides thereof are holes through which the blade support portions 57, 57 are inserted, and outer holes 74, 74. Is a hole through which the auxiliary protrusions 64 are inserted. FIG. 20 shows the lower blade 56, holes 75 and 75 closer to the center are holes through which the blade support portions 57 and 57 are inserted, and outer holes 76 and 76 are holes through which the tips of the auxiliary protrusions 64 and 64 are inserted. . The state in which each blade is supported by the action of these auxiliary projections 64 and 64 and each hole can be easily understood by referring to FIG. The operation of the protrusion 61 in the center diagram of FIG. 23 will be described. As shown in FIG. 23, the protrusion 61 has a step portion at the center, and the step portion presses the intermediate blade 55 downward, and the pressed intermediate blade 55 presses the spacer member 58 downward, Further, the pressed spacer member 58 presses the lower blade 56 to prevent the lower blade from floating. Of course, the spacer member 58 is not limited to one, and a plurality of spacer members 58 may be mounted.
[0035]
FIGS. 24 to 31 are diagrams embodying the inventions of claims 20 to 22. The head 53 of the present invention has a rear end opening 77 as shown in FIG. The rear end opening 77 may be partially shielded by the rib 78 as shown in FIG. 31, or the rear end opening 77 may extend over the entire width of the head 53 without the rib 78. The rib 78 is formed integrally with the blade base 79, but is not limited to this configuration, and may be formed integrally with the top plate 80, for example.
[0036]
25 to 29 are views showing the structure of the insertion spacer 81 used for the safety razor having three blades. The insertion spacer 81 is integrally formed of plastic, and two upper step insertion pieces 83, 83 and one lower step insertion piece 84 project from the base end portion 82 at different heights so as to protrude substantially horizontally. An interval substantially corresponding to the thickness of the blade is provided between the insert piece and the lower step insert piece. The lower step insertion piece 84 exists between the two upper step insertion pieces 83 and 83, and the lower and upper insertion pieces are alternately arranged in the horizontal direction. Locking protrusions 85 and 85 are provided on both sides of the insertion spacer 81, respectively. The locking projections 85 and 85 are for locking to the rib 78 described above when the head 53 is attached to prevent the insertion spacer 81 from coming out of the head 53.
[0037]
As is apparent from FIGS. 28 and 29, both the upper stepped piece 83 and the lower stepped piece 84 are formed so that the thickness gradually decreases toward the tip. This is because the extension lines in the edge direction of the upper blade 86, the intermediate blade 87, and the lower blade 88 intersect with each other as shown in FIG.
[0038]
Next, a method for attaching the insertion spacer 81 to the head 53 will be described. The width of the insertion spacer 81 is a length that can be inserted between the ribs 78 and 78. The insertion spacer 81 is inserted into the center rear end opening 77, and the upper step insertion pieces 83, 83 are inserted between the upper blade 86 and the intermediate blade 87, and the lower step insertion piece 84 is inserted into the intermediate blade. The insertion spacer 81 is attached to the head 53 by being inserted between 87 and the lower blade 88. When the insertion spacer 81 is fully inserted, the locking projections 85 and 85 are locked to the back surfaces of the ribs 78 and 78, so that the insertion spacer 81 does not come out after being mounted.
[0039]
Needless to say, the insertion spacer is not limited to this configuration, and a plurality of insertion spacers may be mounted on the head. In addition, the fixing method of the insertion spacer is not the above-described locking structure. For example, the thickness of the upper and lower insertion pieces 83 and 84 may be larger than the interval between the blades and may be fixed by forcible fitting.
[Brief description of the drawings]
1 is a cross-sectional view taken along the line BB in FIG. 3. FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 3. FIG. 3 is a top view of the head. 6 is a side view of the top plate. FIG. 7 is a cross-sectional view taken along the line CC in FIG. 4. FIG. 8 is a top view of the blade base. FIG. 9 is a cross-sectional view taken along the line DD in FIG. Top view of blade [FIG. 11] Top view of lower blade [FIG. 12] Illustration of head assembly process [FIG. 13] Cross section after completion of head assembly [FIG. 14] Cross section of head [FIG. 15] Exploded sectional view [FIG. 16] Top view, rear view and side view of spacer member [FIG. 17] Cross sectional view of spacer member [FIG. 18] Top view of upper blade [FIG. 19] Top view of intermediate blade [FIG. 20] Bottom Top view of the blade [FIG. 21] Bottom view of the top plate [FIG. 22] Top view of the top plate with the top blade, intermediate blade and spacer member overlaid on the top plate [FIG. 23] ] Partial sectional view showing the assembled state of the head [FIG. 24] Cross sectional view of the head [FIG. 25] Top view of the insertion spacer [FIG. 26] Front view of the insertion spacer [FIG. 27] Rear view of the insertion spacer [FIG. ] Side view of the insertion spacer [Fig. 29] Cross section of the insertion spacer [Fig. 30] Top view with the top plate and upper blade removed from the head [Fig. 31] Rear view of the head [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Top plate 2 Blade stand 3 Side part 4 Blade pressing part 5 Guard part main body 6 Opening port 7 Projection shaft 8 Blade clamping part 9 2nd clamping surface 10 1st clamping surface 11 2nd clamping surface 12 1st clamping surface 13 Blade base insertion portion 14 Projection 15 Top plate bottom surface 16 Clamp base 17 Blade clamp portion 18 Second clamp surface 19 First clamp surface 20 Second clamp surface 21 First clamp surface 22, 23 Hole 24 Guard base 25 Upper blade 26 Intermediate blade 27 Lower blade 28, 29 Hole 30 Notch 31 Elastomer portion 32 Groove 33 Shaving aid 34, 35 Rear rear adjacent portion 36 Notch rear adjacent portion 37, 38, 39 Front edge portion 40, 41 Rear Rear side adjoining part 43 of edge part 42 hole Notch 44 Front side adjoining part 45 hole front side adjoining part 46 Top face 47, 48 hole front side adjoining part 49 Shaving aid 50 Recess 51 Projection 52 Projection part 53 Head 54 Upper blade 55 Intermediate blade 56 Lower blade 5 Blade support part 58 Spacer member 59 Insertion hole 60 Projection part 61 Projection 62 Top plate 63 Base part 64 Auxiliary projection 65 First step part 66 Second step part 67 Blade base insertion part 68 Projection 69, 70, 71, 72, 73, 74, 75, 76 hole 77 rear end opening 78 rib 79 blade base 80 top plate 81 insertion spacer 82 base end 83 upper stepped piece 84 lower stepped piece 85 locking projection 86 upper blade 87 intermediate blade 88 lower blade

Claims (5)

A plurality of three or more blades are stacked vertically between the head blade base and the top plate, and the projecting shaft protruding from the top plate is coupled to the blade base through the holes provided in each blade. The projecting clamping table is provided with a clamping surface that abuts each blade except the lowermost blade and clamps the blade between itself and the top plate side. By providing a clamping surface that abuts and holds each blade between the blade base and the safety razor in which the blades are clamped and spaced apart from each other by shifting the blades. The blades are stacked such that the upper blade hole is displaced backward with respect to the lower blade hole, and the clamping table abuts the uppermost blade through the hole of each blade except the uppermost blade, and A safety razor characterized in that the projecting shaft and the clamping table each clamp the respective blades through the same hole in a state where the clamping table exists on the front side of the projecting shaft. The safety razor according to claim 1, wherein each blade has the same outer shape including the hole. The safety razor according to claim 1 or 2, wherein the insertion spacer is inserted and fixed between the blade from the opening at the rear end of the head. The safety razor according to claim 3 , wherein a plurality of insertion pieces project from the base end portion of the insertion spacer at different heights, and each insertion piece is inserted between the corresponding blades. 5. The safety razor according to claim 4 , wherein at least one of the upper and lower adjacent insertion pieces is provided in the horizontal direction, and the upper and lower adjacent insertion pieces are alternately arranged in the horizontal direction.

Images