Razor

Abstract

To provide a razor which is made of materials suitable for recycling and is comfortable to use. [Solution] The razor (1) comprises a blade (31), a head (3) that holds the blade (31), and a holder (2) that supports the head and is held by the user, the holder being formed from a composition primarily made of polypropylene with added silicone.

Description

[Technical field]

[0001] One aspect of the present invention relates to a razor. [Background technology]

[0002] Hotels and other establishments sometimes provide razors, toothbrushes, brushes, combs, and the like as amenities, and polystyrene is used as the main material for such razors. Patent Document 1 discloses a razor whose holder is formed using a polymer material such as polystyrene, and describes that polystyrene is a particularly suitable material. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2011-527928 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, efforts have been made to reuse these types of amenity items through recycling and to reduce waste. Goal 12 of the 17 Sustainable Development Goals (SDGs) adopted at the United Nations Summit lists ensuring sustainable patterns of production and consumption as "responsible consumption and production," and calls for a significant reduction in waste generation. Under these circumstances, there is a demand to promote the development of environmentally friendly razors that satisfy the 3Rs, including in the field of razors.

[0005] In recent years, polypropylene has become the second most commonly recycled resin material after PET resin, and using polypropylene instead of polystyrene as a razor material makes it easier to reuse through recycling. Hotels and other establishments are increasingly recycling their amenities, and toothbrushes and other amenity items are primarily made of polypropylene, so using the same polypropylene as a material makes recycling easier. However, it was found that simply replacing the material that makes up the razor from polystyrene to polypropylene increases the friction resistance between the holder and the razor head, making it difficult for the head to rotate and preventing a smooth swinging motion.

[0006] One of the objectives of the present invention is to provide a razor that is comfortable to use while using materials that are suitable for recycling. [Means for solving the problem]

[0007] A razor according to one embodiment of the present invention includes a blade body and A head for holding the blade; a holder for supporting the head and being held by a user; The holder is made of a polypropylene-based composition with added silicone.

[0008] After some research, the inventor found that by using a composition made of polypropylene as the main material for the holder with added silicon, the frictional resistance between the head and the holder is reduced, making the movement of the head relative to the holder smoother. In other words, by using such a razor, it is possible to provide a razor that is easy to recycle and comfortable to use.

[0009] In the above razor, preferably the holder is formed from a composition containing 5% by weight or more and 15% by weight or less of silicon.

[0010] With this structure, the frictional resistance between the head and the holder is appropriately reduced, making the movement of the head relative to the holder smoother. Also, by adding 5% or more by weight of silicon, high wear resistance can be obtained.

[0011] In the above razor, preferably, the holder has a swivel spring portion that abuts against the head and elastically deforms to enable the head to swivel relative to the holder.

[0012] In the above razor, the head is preferably formed from a composition containing polystyrene as a main material with silicon added.

[0013] With this configuration, the holder can be easily recycled and frictional resistance between the head and the holder can be reduced.

[0014] In the above razor, preferably the head is formed from a composition containing 5% by weight or more and 15% by weight or less of silicon.

[0015] With this configuration, the frictional resistance between the head and the holder can be further reduced. Effect of the Invention

[0016] According to the razor of the present invention, a razor that is comfortable to use while using materials suitable for recycling can be provided. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a perspective view of a razor according to an embodiment, seen from the back side. [Diagram 2] FIG. 2 is a perspective view of the razor of the embodiment as viewed from the ventral side. [Diagram 3] FIG. 3 is an enlarged perspective view of a connecting portion between the holder and the head of the razor according to the embodiment. [Figure 4]FIG. 4 is an enlarged perspective view of the head of the razor according to the embodiment. [Diagram 5] FIG. 5 is an enlarged perspective view of a holder in the razor according to the embodiment. [Figure 6] FIG. 6 is a perspective view of the razor with the cover attached according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] One of the features of the razor of the present invention is that the material for forming the holder is a composition made of polypropylene as the main material and silicone added thereto, which is recyclable and comfortable to use. The razor of the present invention is sometimes called a safety razor or a T-shaped razor.

[0019] Hereinafter, the embodiment of the razor of the present invention will be described in detail with reference to the drawings. However, the embodiment and examples described below are merely examples of the present invention and should not be construed as limiting the technical scope of the present invention. In each drawing, the same or corresponding components are given the same reference numerals.

[0020] In each figure, the direction in which the holder 2 extends is referred to as the longitudinal direction. The direction perpendicular to the longitudinal direction and in which the head 3 (blade body 31) extends is referred to as the width direction or lateral direction. The side on which the head 3 is arranged with respect to the holder 2 is referred to as the upper side, and the opposite side is referred to as the lower side. The side of the head 3 on which the cutting edge of the blade body 31 faces is referred to as the ventral side, and the opposite side is referred to as the dorsal side.

[0021] [Embodiment] Figures 1 and 2 are perspective views of a razor 1 according to an embodiment, with Figure 1 being a view seen from the dorsal side and Figure 2 being a view seen from the ventral side. Figure 3 is an enlarged perspective view of a connecting portion between a holder 2 and a head 3 of the razor 1. Figure 4 is an enlarged perspective view of the head 3, and Figure 5 is an enlarged perspective view of the holder 2.

[0022] As shown in the figure, razor 1 comprises holder 2 and head 3. Head 3 holds blade body 31 that comes into contact with the user's skin during use. Head 3 is connected to and supported by holder 2. During use, the user holds holder 2, brings the cutting edge of blade body 31 into contact with the area of ​​skin from which body hair is to be removed, and moves razor 1 so as to slide downward perpendicular to the direction in which blade body 31 extends (lateral direction).

[0023] [Razor configuration] The holder 2 is a part that is held by a user during use, is formed to extend in the longitudinal direction, and is connected to the head 3 to support the head 3. The holder 2 has an outer shell formed of a plate-shaped resin, and its inside is a cavity with an open ventral side. From the viewpoint of rigidity and durability, no through holes are formed in the holder 2. The outer shell of the holder 2 is a plate with a certain thickness, and is shaped to prevent molding defects such as sink marks or warping during molding.

[0024] The holder 2 has ribs 23a to 23d formed in a wall shape on the inside of its outer shell so as to connect the outer shell in the width direction perpendicular to the longitudinal direction. Specifically, the rib 23a has a curved shape that is convex upward, and the rib 23b has a curved shape that is convex downward. Three ribs 23c are formed between these ribs 23a and 23b. The ribs 23c extend linearly in the width direction. In the vicinity of the upper end of the holder 2, a rib 23d is formed that extends in the width direction in a curved shape that is slightly convex downward. By having these ribs 23a to 23d, even if the inside of the outer shell of the holder 2 is configured to be hollow, the holder 2 does not bend more than necessary when held by a user or easily deform, and the shape is stable.

[0025] 2, the holder 2 has a narrow portion 26a located approximately 1 / 4 of the way down from the top end in the longitudinal direction, and a wide portion 26b located approximately 1 / 4 of the way up from the bottom end. The narrow portion 26a is a narrower, more constricted portion compared to other portions of the holder 2, and the wide portion 26b is a wider, more bulging portion compared to other portions of the holder 2. This shape makes the holder easy to grip and less likely to slip.

[0026] As shown in Figures 1 to 3 and 5, the upper end of the holder 2 is separated into three parts in the width direction, and is formed with connecting parts 24a and 24b located on the left and right, and a swivel spring part 25 sandwiched between these connecting parts 24a and 24b.

[0027] As shown in FIG. 5, the connecting portion 24a has clamping pieces 241a and 242a and a protruding portion 243a. Similarly, the connecting portion 24b has clamping pieces 241b and 242b and a protruding portion 243b. The protruding portions 243a and 243b each extend in a cylindrical shape in the horizontal direction. The connecting portion 24a has the clamping pieces 241a and 242a clamping the clamped portion 32a when the protruding portion 243a is inserted into the connecting hole 321a (see FIG. 4) of the head 3. Similarly, the connecting portion 24b has the clamping pieces 241b and 242b clamping the clamped portion 32b when the protruding portion 243b is inserted into the connecting hole 321b (see FIG. 4) of the head 3. This connects the holder 2 and the head 3. When the holder 2 and the head 3 are connected to each other, the protrusions 243a and 243b are rotatable within the connection holes 321a and 321b.

[0028] In addition, a rib 25b is formed on the upper side of the oscillating spring part 25 so as to protrude linearly from the upper end 25a toward the lower side (see FIG. 5). When the holder 2 is connected to the head 3, this rib 25b abuts against the end face of the abutment part 33 of the head 3 that faces the oscillating spring part 25 (see FIG. 4). The oscillating spring part 25 is a plate-shaped member that is thinner in the thickness direction than the connecting parts 24a and 24b, and elastically deforms as a leaf spring. When the abutment surface of the head 3 on which the blade body 31 is exposed abuts against the skin of the user, a force is generated that causes the head 3 to rotate around the protrusions 243a and 243b extending laterally as rotation axes according to the inclination of the abutting skin, etc., and the oscillating spring part 25 elastically deforms in response to this force, causing the head 3 to oscillate relative to the holder 2, and rotation beyond a certain level is restricted by the oscillating spring part 25. At this time, the stiffness of the swing is determined according to the elasticity of the oscillating spring part 25. That is, the contact portion 33 functions as a member that restricts the movement of the oscillating spring portion 25 .

[0029] A rib 23d is formed on the connecting parts 24a and 24b of the holder 2 and on the underside of the oscillating spring part 25. By forming the rib 23d in this manner, the rigidity of the connecting parts 24a and 24b and the underside of the oscillating spring part 25, which are easily subjected to stress, is strengthened.

[0030] 1, the holder 2 has a step 27 located about 1.0 cm from the upper end, and the connecting parts 24a and 24b are located above this step 27. In other words, the connecting parts 24a and 24b to which stress is applied are formed thick in the thickness direction, and their rigidity is enhanced.

[0031] The head 3 is formed to extend in the width direction, holds the blade 31, and is connected to the holder 2 so as to be supported by the holder 2. The cutting edge of the blade 31 is exposed on the ventral side of the head 3 and comes into contact with the skin of the user during use.

[0032] 5 and other drawings, head 3 has clamped parts 32a and 32b and abutment part 33 on the back side facing holder 2. As already described, clamped parts 32a and 32b are connected to connecting parts 24a and 24b of holder 2, respectively, and abutment part 33 abuts on oscillating spring part 25 of holder 2. Head 3 can perform a oscillating movement in which the abutment surface tilts by rotating relative to holder 2 about protruding parts 243a and 243b as rotation axes.

[0033] 6 is a diagram showing the cover 4 attached to the head 3. In this manner, the cover 4 for preventing the blade 31 from being exposed can be detachably attached to the head 3.

[0034] [Materials that make up Razor 1] In the razor 1 of this embodiment, the holder 2, which uses a large amount of resin material, is made of a composition mainly made of polypropylene, which is suitable for recycling, instead of the conventional polystyrene. On the other hand, the head 3, which is equipped with the blade body 31 and is not easy to recycle, and uses a small amount of material, is made of a composition mainly made of polystyrene, as in the conventional case.

[0035] Specifically, the holder 2 is formed from a composition whose main material is polypropylene with silicon added thereto.

[0036] When the head 3 rotates relative to the holder 2 to perform a oscillating motion, the upper end 25a of the oscillating spring portion 25 of the holder 2 comes into contact with the contact portion 33 of the head 3. If the head 3 is made of polystyrene and the holder 2 is made of only polypropylene, a relatively large frictional resistance occurs at the contact position, and the contact portion wears out. If such a large frictional resistance occurs, the head 3 becomes difficult to rotate relative to the holder 2. Furthermore, if the contact portion wears out, dust is generated due to the wear, and the contact portion is scraped and deformed. Therefore, if a composition containing polypropylene as the main material and an appropriate amount of silicon is used as the material for the holder 2, the frictional resistance at the contact portion is reduced, and the above phenomenon can be suppressed.

[0037] However, if the proportion of silicon added to the polypropylene is lower than 5% by weight, the abrasion resistance deteriorates, so it is preferable that the proportion of silicon added to the polypropylene is 5% by weight or more.

[0038] Furthermore, if the proportion of silicon added to polypropylene is higher than 15% by weight, the cost of formation will increase, so it is preferable that the proportion of silicon added to polypropylene is 15% by weight or less.

[0039] On the other hand, the head 3 is preferably formed from a composition mainly made of polystyrene with added silicon, but conventional polystyrene without added silicon can also be used. If a composition mainly made of polystyrene with an appropriate amount of added silicon is used as the material for the head 3, the frictional resistance between the holder 2 and the head 3 becomes smaller, and the swinging motion can be performed more smoothly.

[0040] The composition used for the head 3 is made of polystyrene, which is the main material, and contains 5% by weight or more and 15% by weight or less of polystyrene. It is preferable to add no more than 10% silicon.

[0041] [Variations] The razor 1 of the embodiment is not limited to the configuration of the above embodiment, and various modifications may be applied. For example, the following modified configurations may be adopted.

[0042] In the embodiment, the head 3 is made mainly of polystyrene, but may be made mainly of polypropylene. In this case, by removing the blade body 31 from the head 3, the head 3 can be easily recycled.

[0043] [Razor Features] The razor 1 of the above embodiment has the following features, for example.

[0044] Razor 1 comprises a blade 31, a head 3 which holds blade 31, and a holder 2 which supports head 3 and is held by a user, holder 2 being formed from a composition which is primarily made of polypropylene with added silicone.

[0045] Razor 1 having such a configuration uses polypropylene, which is suitable for recycling, so razor 1 can be easily recycled. [Explanation of symbols]

[0046] 1. Razor 2. Holder 23a~23d…Ribs 25... Swing spring part 3. Head 31...blade body

Claims

1. The blade and A head for holding the blade; a holder for supporting the head and being held by a user; The holder is formed of a composition based on polypropylene with added silicon; Razor.

2. The holder is formed of a composition containing 5% by weight or more and 15% by weight or less of silicon.

2. The razor of claim 1.

3. The holder has a swivel spring portion that contacts the head and elastically deforms to enable the head to swivel relative to the holder.

2. The razor of claim 1.

4. The head is formed of a composition containing polystyrene as a main material and silicon added thereto.

2. The razor of claim 1.

5. The head is formed of a composition containing 5% by weight or more and 15% by weight or less of silicon.

2. The razor of claim 1.

6. The holder is formed of a composition containing 5% by weight or more and 15% by weight or less of silicon, the head is formed of a composition containing polystyrene as a main material and 5% by weight or more and 15% by weight or less of silicon added thereto; The holder has a swivel spring portion that contacts the head and elastically deforms to enable the head to swivel relative to the holder.

2. The razor of claim 1.

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