JP2009189553A - Safety razor suitable for shaving back and shin - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safety razor which can easily shave body hair on places away from a face such as a back and a shin. <P>SOLUTION: This safety razor includes a handle and a blade device. The blade device is installed on the upper side of the handle. The handle includes a gripping section, a neck section on the more upper side than the gripping section, and a blade attaching section on the more upper side than the neck section. The safety razor has a blade body arranged in the lateral direction to the handle. The total length of a straight line including the handle and the blade device is 180 mm or longer. Preferably, the surface of the handle which faces the skin when the safety razor is used is defined as the front surface, and the surface on the opposite side is defined as the back surface, and an end of the gripping section forms a bent section by bending to the front surface side of the handle. The gripping section is formed into a shape and a size so that the safety razor can stably be held. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates primarily to a safety razor suitable for women to shave their backs and shins.

There is a safety razor suitable for shaving a leg or the like (see, for example, Patent Document 1).
Japanese Utility Model Publication No. 6-72566

  An object of the present invention is to provide a safety razor that can easily shave body hair in places away from the face, such as the back and the shin of the foot.

  There is a safety razor suitable for shaving a foot as described in US Pat. This conventional safety razor notices that the surface of the foot is rounded compared to the surface of the face, and the upper surface of the razor head and the blade are both in a concave arc shape to fit the roundness of the foot and prevent unshaved portions It is something to try.

In this way, there was a safety razor that was suitable for shaving the foot by focusing on the difference between the shape of the face and foot, but focusing on the fact that the back and foot shins were far from the face. There is no safety razor suitable to shave. That is, a normal safety razor is intended to shave the face and does not require a long handle. A pattern that is too long makes the shaving unstable and is not suitable for shaving. Therefore, the length of the conventional safety razor is approximately 140 mm or less, with the total length of the entire safety razor including the handle and the blade being long. It is well established in the history of safety razors that this length is suitable for shaving. The length of the safety razor described in Patent Document 1 is also the length of a normal safety razor. This is because when shaving the body hair of the foot, if the hand is folded and stretched as if it were folded, the safety razor reaches the place, so the length of the safety razor is not considered at all.

If you fold your foot so that it folds, you can shave while looking at both sides and the back of the shin. However, in the legs, the so-called Benkei crying area is difficult to see when folded like folding the legs, and if you try to bend the body you will be cramped and you can shave that part reliably Have difficulty. Therefore, when shaving the shin, it must be stretched so that the legs that have been bent so as to fold are shaped like a dogleg. If you bend your legs like this, you will be able to see the shins, but the distance from your arms to the shins will be increased by extending your legs. Does not reach the intended location. Therefore, shaving the shin is not a smooth operation.

  Also, in the summer season, young women wear clothes with their backs wide open, so they are worried about their back hair. With a conventional safety razor, it is very difficult to shave one's own back because of its structure, and someone else will shave. Therefore, it would be good news for women to be provided with a safety razor that can easily shave their own back hair. The present invention seeks to provide that good news.

Claim 1 of the present invention includes a handle and a blade device, and the blade device is provided on an upper portion of the handle, and the handle includes a grip portion, an upper neck portion, and an upper blade mounting portion. A safety razor having a blade disposed in a direction transverse to the handle, wherein the total length of the straight line including the handle and the blade device is 180 mm or more.

Claim 2 defines the surface of the handle facing the skin when using a safety razor as the front and the opposite surface as the back, and the lower part of the gripping portion is bent to the front side of the handle to form a bent portion. In addition, an element formed in a shape and size capable of stably holding the safety razor by the gripping part is added to claim 1.

According to a third aspect of the present invention, an element formed on a smooth convex surface that fits the palm when the back surface of the bent portion is held by a hand is added to the second aspect.

According to a fourth aspect of the present invention, when the gripping part is viewed from the side, the lines constituting the front of the bent part form a concave arc, the lines constituting the back of the bent part form a convex arc, and at the lower end of the bent part An element in which the angle formed by this line is an acute angle and the lower end of the bent portion faces the front side of the handle is added to claim 3.

According to a fifth aspect of the present invention, there is provided an element in which a finger rest portion is provided at a position adjacent to the neck portion on the back surface of the grip portion, and therefore, an upper end of the finger rest portion forms a boundary between the grip portion and the neck portion. This is a configuration added to any one of items 4.

Claim 6 is an element added to any one of claims 1 to 5, wherein the center of gravity of the entire safety razor with the blade device attached to the handle is in the range of the neck with respect to the length direction of the safety razor. It is a configuration.

Claim 1 is a configuration in which the total length of the straight line including the handle and the blade device is 180 mm or more. Therefore, since it is 40 mm or longer than a normal safety razor, a place far from the face can be easily shaved.

Claim 2 defines the surface of the handle facing the skin when using a safety razor as the front and the opposite surface as the back, and the lower part of the gripping portion is bent to the front side of the handle to form a bent portion. The grip portion is configured to have a shape and a size capable of stably holding a safety razor. Since the safety razor of the present invention is considerably longer than the conventional razor, it is unstable only by holding the gripping part with a fingertip. Therefore, the safety razor can be stabilized during use by placing the back of the bent portion on the ventral side or palm of the hand in addition to the fingertip.

According to a third aspect of the present invention, the back surface of the bent portion is formed into a smooth convex surface that fits the palm of the hand when the grip portion is held by hand. When you hold the grip of the safety razor and place the back of the bent part on the palm of your hand, the palm will become concave, so if you make the back of the bent part a smooth convex surface, it will fit the palm and feel Good and can hold a safe razor.

According to a fourth aspect of the present invention, when the gripping part is viewed from the side, the lines constituting the front of the bent part form a concave arc, the lines constituting the back of the bent part form a convex arc, and at the lower end of the bent part The angle formed by this line is an acute angle, and the lower end of the bent portion is directed to the front side of the handle. By forming the line constituting the front surface of the bent portion into a concave arc shape, the thickness between the front surface and the rear surface of the bent portion is reduced. Therefore, when the palm is placed on the back of the bent part and any finger is put on the front of the bent part so as to sandwich the bent part, the bent part is thin so that it is difficult to wobble in the hand in a stable state. You can have a safety razor. The wobble is that the safety razor rotates left and right around the axis extending in the length direction of the safety razor.When the grip is thick, the safety razor rotates left and right around the axis. It is easy. In addition, since the lower end of the bent portion faces the front side of the handle, the tip of the bent portion does not hit the palm or the like having a safety razor, and no pain is felt during use.

According to a fifth aspect of the present invention, a finger resting recess is provided at a position adjacent to the neck on the back surface of the gripping portion, and therefore the upper end of the finger resting recess forms a boundary between the gripping portion and the neck. By providing the finger mounting recess, the finger placed on the finger mounting recess during use can be stabilized. Further, since the finger placement concave portion is provided at a position adjacent to the neck portion, it is sufficiently separated from the bent portion. Therefore, for example, when the index finger is placed on the finger rest when holding the bent part in the palm of your hand, even if the index finger is straightened, the ventral side of the index finger almost completely contacts the finger rest and the razor is stable. Can have. Since the safety razor of the present invention is considerably longer than usual, it is a very important condition in use to have a stable safety razor.

The sixth aspect of the present invention has a configuration in which the center of gravity of the entire safety razor with the blade device attached to the handle is in the range of the neck with respect to the length direction of the safety razor. For example, when shaving the back, the safety razor faces downward and the blade device is positioned below the gripping portion. When shaving the back, first, lightly grasp the grasping part with a fingertip and bring the blade device closer to the skin. At that time, the safety razor is downward and inclined with respect to the vertical direction. That is, the neck is below the grip. Here, the center of gravity of the safety razor is present in the neck below the gripping part.For example, when the gripping part is lightly pinched with the fingertip, the position where the safety razor is sandwiching is placed so that the center of gravity is directly below the sandwiching position. Swing to the center. Then, since the direction of swinging is the direction toward the skin, when using the safety razor, if the blade device is brought close to the back, the blade device naturally comes into contact with the skin and can be shaved by pulling the safety razor as it is. When you shave your back, you can't see the surface of the skin you want to shave, but you can shave your back without anxiety because the safety razor automatically swings toward the skin and touches the blade device with a light touch.

  Next, an embodiment of the present invention will be described. The safety razor 1 includes a handle 2 and a cartridge replacement blade 3 which is a blade device. The handle 2 includes a grip portion 4 that is present at the lowest position, a neck portion 5 that is present above the grip portion 4, and a blade attachment portion 6 that is present above the neck portion 5. The total length of the safety razor 1 to which the cartridge replacement blade 3 is attached as measured in the common tangent YY direction connecting the cartridge replacement blade 3 and the tip of the bent portion 7 in FIG. 3 is about 200 mm, but the present invention is limited to this value. What is necessary is just 180 mm or more. It may be about 190 mm, about 210 mm, or about 220 mm. A numerical length from about 220 mm to about 250 mm may be used. It may be about 250 mm to 300 mm. However, since it becomes difficult to handle when the length exceeds 800 mm, it is not intended to include numerical values that are practically difficult to handle. When the length of the handle is longer than that of a normal safety razor as in the present invention, it takes up space when displayed at a store or when a purchased consumer stores it. Therefore, according to the present invention, the safety razor may be extendable, foldable, or disassembled in the middle of the handle. Although the present invention is longer than a normal safety razor, it is suitable for shaving a place far away from the face such as the back and the shin of the foot, but because of its length, it is not suitable for a normal face shaving. Therefore, the grip portion 4 may be composed of a plurality of grip portions arranged in the length direction so that the face can be easily shaved in the same manner as a normal safety razor. When shaving a place that is not so far, such as the face, the gripping part closer to the neck part 5 is used to stabilize the work. When a plurality of gripping portions are provided, the length of the neck portion 5 is shortened accordingly. Since the length of the neck portion 5 of this embodiment is about 70 mm, the length of the neck portion is about 20 mm when another grip portion is provided. A preferred length for the neck is in the range of about 20 mm to about 300 mm. The blade device is not a replaceable blade such as the cartridge replaceable blade 3, but may be permanently provided at the upper end of the handle. If the blade device is provided with a guard that partially exposes the edge of the blade, and a shaving aid is provided on the surface of the cap portion and the cap extending in the lateral direction before and after the blade, it is possible to shave even a difficult-to-see place. In addition, as shown in FIG. 1, if roller members 31 and 32 are rotatably attached to the front of the guard part and the back of the cap, and shaving aid is provided on the surface of the roller members 31 and 32, shaving is more comfortable and smooth. Can do.

  As shown in FIG. 3, the lower portion of the grip portion 4 is bent to the front side (left side as viewed in FIG. 3) to form a bent portion 7. The back surface 8 of the bent portion 7 is formed into a smooth convex surface so as to fit the palm. Further, the line 28 that forms the front surface of the bent portion 7 has a concave arc shape, and the line 29 that forms the back surface 8 of the bent portion 7 also has a convex arc shape. The line constituting the back surface 8 may be one arc or a combination of a plurality of arcs having different radii. The radius of these arcs is preferably in the range of 20 mm to 300 mm. The angle formed by the lines 28 and 29 at the lower end 30 of the bent portion 7 is an acute angle, but the tip is slightly rounded. With this configuration, the back surface 8 of the bent portion 7 fits in the palm of the hand, and by holding the front and back surfaces 8 of the bent portion 7, the bent portion 7 of the safety razor can be held in a stable state so as to be wrapped by the palm. As shown in FIG. 4, the bent portion 7 has a shape in which the central portion bulges left and right, and has the bent portion 7 so as to be wrapped in the palm of the hand, thereby preventing the bent portion 7 from being accidentally dropped when used with the safety razor facing downward. it can. Furthermore, since the lower end 30 of the bent portion 7 faces the front side of the handle 2, the lower end 30 does not hit the palm or the abdomen of the finger, and the lower end 30 does not feel pain. In addition, you may provide a finger hook hole in order to have a safe razor reliably.

As shown in FIG. 4, the bent portion 7 is formed in a shape that swells on both sides, and its maximum lateral width is about 24 mm, but is not limited to this value. In this way, the bent portion 7 swells on both sides, so that it fits comfortably on the palm. The bent portion 7 is a part of the grip portion 4, but the place having the maximum lateral width of the grip portion 4 exists in the bent portion 7. This is because it is suitable for holding a safety razor in a stable state.

  As shown in FIG. 2, wall-like ribs 9 for reinforcing the handle 2 are provided inside the grip portion 4. Further, three ribs 10, 11, 12 for reinforcing the handle 2 are provided in the lateral direction on the front surface of the bent portion 7. A recess 13 is formed between the rib 10 and the rib 11, a recess 14 is formed between the rib 11 and the rib 12, and a recess 15 is formed between the rib 12 and the wall-shaped rib 9. ing. These recesses 13, 14, 15 are sized to securely hold a safety razor by hanging a part of the fingertip on any of these recesses 13, 14, 15 when holding the safety razor in the hand. Is formed.

  As shown in FIG. 4, the portion above the bent portion 7 is a finger-addressed portion 16 and has a narrower width than the bent portion 7, and both side surfaces 17 and 17 are formed in a concave arc shape. Further, anti-slip portions 18 and 18 are provided on the surfaces of both side surfaces 17 and 17. Even when the gripping portion 4 is constituted by a plurality of gripping portions arranged in the length direction, it is preferable to form the finger-addressed portion having such a structure with respect to the gripping portion closer to the neck portion.

  The portion above the above-described finger-addressed portion 16 is a finger placement portion 19, and a finger placement recess 20 is formed on the back surface thereof. An upper end portion 21 of the finger placement recess 20 is a boundary with the neck portion 5. The maximum lateral width of the finger placing portion 19 is larger than the lateral width of the finger-addressed portion 16 and smaller than the maximum lateral width of the bent portion 7. An anti-slip portion 22 is provided on the surface of the finger resting recess 20. Even when the grip portion 4 is configured by a plurality of grip portions arranged in the length direction, it is preferable to form the finger rest portion and the finger rest portion having such a structure with respect to the grip portion closer to the neck portion. As a normal way of holding the safety razor of the present invention, for example, the grip 4 is wrapped in the palm, the thumb and the middle finger are directed to the side surfaces 17 and 17 of the fingered part, the fingered part 16 is sandwiched, and the index finger is handled. 2 is extended in the same direction as 2 and placed on the finger resting recess 20. Accordingly, since the center of the cartridge replacement blade 3 is at the tip of the index finger, the position of the cartridge replacement blade 3 can be sensed even when a place where the safety razor cannot be seen is shaved.

  As shown in FIG. 3, the portion above the finger rest portion 19 is the neck portion 5 and extends linearly. A wall-like rib 25 extending in the length direction is provided inside the neck portion 5 to reinforce the neck portion 5. Further, a portion above the neck portion 5 is a blade mounting portion 6, which is provided so as to be inclined toward the front side with respect to the neck portion 5. An inclination starting point 26 of the blade attachment portion 6 is a boundary between the neck portion 5 and the blade attachment portion 6. Inward journal shafts 24, 24 are provided at the ends of the arms 23, 23 of the blade mounting portion 6, and are coupled to the journal bearings of the cartridge replacement blade 3 to hold the cartridge replacement blade 3 in a swingable manner. You may hold | maintain so that rocking is impossible.

  The symbol G shown in FIG. 3 is the center of gravity of the safety razor 1. The position of the center of gravity G in the length direction of the safety razor 1 is within the range of the neck 5. That is, it exists between the upper end portion 21 of the finger mounting recess 20 and the inclination start point 26 of the blade mounting portion 6. Preferably, a position approximately 10 mm above the end 21 above the finger resting recess 20 is preferable, but the position is not limited to this value. The position of the center of gravity G on the horizontal plane is at a position away from the neck 5 on the front side of the neck 5. However, the position of the center of gravity G is not limited to this place. Further, as described in paragraph "0019", the center of gravity G of the safety razor is present in the range of the neck portion 5, so that the blade device naturally becomes skin if the blade device is brought close to the back when the safety razor is used on the back. To touch. Then, shaving is started, but it is easy to adjust the amount of force applied by placing the index finger on the finger resting recess 20.

The total length A of the blade mounting portion 6 is about 40 mm. Since the length of this part of a normal safety razor is 15 to 25 mm, it is formed longer than that. However, the present invention is not limited to this value, and a length of 20 mm to 80 mm is preferable. Both the bent portion 7 and the blade attachment portion 6 of the grip portion 4 are bent toward the front side of the handle 2, but the inclination angle of the blade attachment portion 6 is larger. Regarding the common tangent YY, the distance B between the front surface of the neck 5 and the common tangent YY is larger than the distance C between the neck 5 and the common tangent YY at the boundary between the grip 4 and the neck 5. When the distance B is larger than the distance C, for example, when the back close to the shoulder is shaved, the shoulder does not hit the neck portion 5. The distance C is about 25 mm, but the present invention is not limited to this value and may be 15 mm or more and 80 mm or less. The distance in this range is a distance that is 1 to 5 times the normal finger thickness. If the distance is within this range, when the safety razor 1 is placed on the wash basin with the front of the handle 2 facing down, the user can easily put his finger between the handle 2 and the wash basin and hold the safety razor 1 with his hand. Can take on. Further, when such a distance exists between the common tangent line Y-Y and the handle 2, the cartridge replacement blade 3 can be easily applied to a place where it is desired to shave when used. However, the distance B may be equal to or less than the distance C.

FIG. 5 is a diagram showing a method of shaving the back according to the present invention. This figure shows the state of shaving the back away from the shoulder. Therefore, the user's index finger 27 is only placed on a part of the finger resting recess 20. The present invention can be used in this way when shaving a distant place. When shaving a little closer place, the index finger 27 is used with the index finger 27 placed on the finger resting recess 20 in its entirety.

In addition, this invention can take a various aspect based on the structure mentioned above. For example, the pattern 2 may be formed by multicolor molding using materials of two colors or three colors or more to change the color. At that time, a material having different characteristics, for example, a resin having a high coefficient of friction such as an elastomer resin or a silicone resin may be used for a portion touched by a finger to act as a slip stopper. In addition, the material is not limited to the synthetic resin, and other materials such as metal and wood may be used. The weight balance of the handle may be changed by using materials having different specific gravities. Further, the present invention is not limited to women and may be intended for men to shave their backs and legs. In that case, men are on average taller than women, so it is preferable to make them longer than those for women. In addition, since the present invention is longer than a normal safety razor, it is convenient to hang it on a wall or the like without taking up space. Therefore, for example, a hook hole may be provided at the lower end of the handle so that it can be hung.

Perspective view of the present invention The perspective view of this invention which removed the cartridge replacement blade Side view of the present invention Rear view of the present invention with the cartridge replacement blade removed Use state diagram to shave your back

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Safety razor 2 Handle 3 Cartridge replacement blade 4 Gripping part 5 Neck part 6 Blade mounting part 7 Bending part 8 Back surface of the bending part 9 Wall-shaped rib 10 Rib 11 Rib 12 Rib 13 Recess 14 Recess 15 Recess 15 Recess 16 Recess 16 Side 18 of the finger-addressed portion Anti-slip portion 19 Finger-mounting portion 20 Finger-mounting concave portion 21 End portion of the finger-mounting concave portion 22 Anti-slip portion 23 Arm 24 Journal shaft 25 Wall-shaped rib 26 Blade starting point inclination starting point 27 Index finger 28 Bending portion Line 29 constituting the front surface of the wire 30 Line constituting the back surface of the bent portion 30 Lower end 31 of the bent portion Roller member 32 Roller member

Claims (6)

A handle and a blade device, wherein the blade device is provided at an upper portion of the handle; the handle includes a gripping portion, an upper neck portion, and an upper blade mounting portion; A safety razor having a blade disposed on the surface, wherein the total length of the straight line including the handle and the blade device is 180 mm or more. The surface of the handle that faces the skin when using a safety razor is defined as the front surface, the opposite surface is defined as the back surface, and the lower part of the gripping part is bent to the front side of the handle to form a bent part, The safety razor according to claim 1, wherein the grip portion is formed in a shape and a size capable of stably holding the safety razor. The safety razor according to claim 2, wherein the back surface of the bent portion is formed as a smooth convex surface that fits the palm of the hand when the grip portion is held by hand. When the gripping part is viewed from the side, the lines constituting the front of the bent part form a concave arc, the lines constituting the back of the bent part form a convex arc, and these lines are formed at the lower end of the bent part. The safety razor according to claim 3, wherein the angle is an acute angle and the lower end of the bent portion faces the front side of the handle. 5. The finger mounting concave portion is provided at a position adjacent to the neck portion on the back surface of the gripping portion, and therefore the upper end of the finger mounting concave portion forms a boundary between the gripping portion and the neck portion. Safety razor. The safety razor according to any one of claims 1 to 5, wherein the center of gravity of the entire safety razor in which the blade device is attached to the handle lies in the range of the neck with respect to the length direction of the safety razor.

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