KR102374733B1 - Razor Cartridge - Google Patents

Abstract

Disclosed is a razor cartridge.
According to an embodiment of the present disclosure, at least one shaving blade having a cutting edge; a blade housing longitudinally receiving at least one shaving blade; and a guard part disposed in front of the at least one shaving blade, the guard part including a plurality of guard protrusions formed on one surface of the guard part, wherein the plurality of guard protrusions include a first protrusion, a first protrusion in at least a portion of the guard part. A razor cartridge comprising: a second protrusion disposed behind the first protrusion and having a protrusion height greater than the first protrusion; and a third protrusion disposed behind the second protrusion and having a protrusion height greater than the second protrusion. provides

Description

Razor Cartridge

The present disclosure relates to a razor cartridge.

The content described in this section merely provides background information for the present disclosure and does not constitute the prior art.

A conventional razor assembly, commonly known as a wet razor, includes a razor cartridge and a razor handle. The razor cartridge includes a blade housing, a guard portion, a cap portion, and at least one shaving blade disposed between the guard portion and the cap portion.

The blade housing is generally manufactured by injection molding plastic. Therefore, the conventional razor cartridge has a problem in that when the blade housing comes into contact with the user's skin, the hard plastic feel is transmitted to the user, thereby degrading the shaving feeling.

In particular, when a user shaves an uneven area, for example, an area such as the chin, armpit, etc., the area where the blade housing is more comes into contact with the user's skin, this problem can be exacerbated. there is.

In this regard, recently, a razor cartridge including a guard rubber has been used. The guard rubber is made of a rubber material, and may be formed by injection molding on a blade housing made of a plastic material.

Since such a guard rubber is made of a rubber material having elasticity, it can stretch the user's skin more strongly. In addition, the guard rubber has the effect of providing a softer contact feeling to the user compared to the plastic material.

However, since the guard rubber is disposed on the blade housing only in a partial area in front of the shaving blade, when shaving, the user still has no choice but to feel the hard touch of the plastic.

Meanwhile, recently, shaving aids such as shaving foam, shaving gel, and shaving cream have been used to reduce irritation applied to the skin during shaving. Such a shaving aid includes a lubricating component, and may be used by being applied to the user's skin.

In general, wet razors are used with moisture. Accordingly, the shaving aid applied to the user's skin may be washed away from the razor cartridge by moisture during shaving. In this case, a shaving aid that has not yet been used or can be reused can also be washed away with moisture.

Accordingly, there is a problem in that the applied shaving aid does not function properly and is wasted, or an excessive amount of the shaving aid is used for one shave.

Accordingly, an object of the present disclosure is to provide a razor cartridge capable of providing a feeling of soft contact and tension to a user's skin during shaving.

Another object of the present disclosure is to provide a razor cartridge capable of efficiently using a shaving aid.

According to an embodiment of the present disclosure, at least one shaving blade having a cutting edge; a blade housing longitudinally receiving at least one shaving blade; and a guard part disposed in front of the at least one shaving blade, the guard part including a plurality of guard protrusions formed on one surface of the guard part, wherein the plurality of guard protrusions include a first protrusion, a first protrusion in at least a portion of the guard part. A razor cartridge comprising: a second protrusion disposed behind the first protrusion and having a protrusion height greater than the first protrusion; and a third protrusion disposed behind the second protrusion and having a protrusion height greater than the second protrusion. provides

As described above, according to the present embodiment, the razor cartridge has an effect of providing a user with a soft feeling of contact and a feeling of tension when shaving.

In addition, there is an effect that the shaving aid can be used efficiently.

1 is a front view of a razor cartridge according to an embodiment of the present disclosure;
2 is a perspective view of a razor cartridge according to an embodiment of the present disclosure;
3 is a side view of a razor cartridge according to an embodiment of the present disclosure;
4 is a rear view of a razor cartridge according to an embodiment of the present disclosure;
5 is a cross-sectional view of the razor cartridge according to an embodiment of the present disclosure, taken in the V-V' direction of FIG. 1 .
6 is a cross-sectional view of a razor cartridge according to an embodiment of the present disclosure, taken in a direction VI-VI' of FIG. 1 .
7 is a bottom view of a razor cartridge according to an embodiment of the present disclosure.
FIG. 8 is a cross-sectional view of a razor cartridge according to an embodiment of the present disclosure, taken in a direction VIII-VIII' of FIG. 1 .

Hereinafter, some embodiments of the present disclosure will be described in detail with reference to exemplary drawings. In adding reference numerals to components in each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated in different drawings. In addition, in describing the present disclosure, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present disclosure, the detailed description thereof will be omitted.

In describing the components of the embodiment according to the present disclosure, reference numerals such as first, second, i), ii), a), b) may be used. These signs are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the signs. When a part in the specification 'includes' or 'includes' a certain component, it means that other components may be further included, rather than excluding other components, unless explicitly stated to the contrary. .

1 is a front view of a razor cartridge 10 according to an embodiment of the present disclosure.

Specifically, Figure 1 (a) shows a front view of the razor cartridge (10), Figure 1 (b) is the position of the first region (R1) and the position of the second region (R2) on the guard unit (140) is shown, and FIG. 1( c ) shows the position of the third region R3 and the position of the fourth region R4 on the guard unit 140 .

2 is a perspective view of a razor cartridge 10 according to an embodiment of the present disclosure.

3 is a side view of the razor cartridge 10 according to an embodiment of the present disclosure.

1 ( a ), 2 , and 3 , a razor cartridge 10 includes at least one shaving blade 110 , a blade housing 120 , a clip, 130 , a guard portion 140 , an edge portion 150 , a cap portion 160 , and a lubricating band 170 may be included.

At least one shaving blade 110 may have a cutting edge 112 .

The blade housing 120 may longitudinally receive the at least one shaving blade 110 . Here, the longitudinal direction refers to the width direction of the blade housing 120 . For example, in FIG. 1 , the longitudinal direction is a direction parallel to the X axis.

The at least one shaving blade 110 may be retained by the plurality of clips 130 while being accommodated in the blade housing 120 .

The blade housing 120 may include a discharge portion 122 .

The discharge unit 122 may discharge the shaving aid delivered to the razor cartridge 10 on a top side of the blade housing 120 toward which the cutting edge 112 faces.

Here, the shaving aid refers to various substances applied to the user's skin to aid in shaving. For example, the shaving aid may be one of shaving foam, shaving gel, and shaving cream, but the present disclosure is not limited thereto.

In addition, the shaving aid may be a fluid material, but may be other materials having fluidity. For example, the shaving aid may be a solid substance in the form of a powder, or a fluid substance with a solid substance.

1 ( a ), 2 , and 3 , the shaving aid is illustrated as being discharged through the discharge unit 122 provided in the blade housing 120 , but the present disclosure is not limited thereto.

For example, the shaving aid may be discharged from a separate component from a razor (not shown) and applied to the user's skin. In this case, the blade housing 120 may not include the discharge unit 122 and the receiving portion 124 in FIG. 4 for delivering the shaving aid to the discharge unit 122 .

The shaving aid may be evenly distributed on the razor cartridge 10 along the channel 144 formed in the guard unit 140 .

The guard unit 140 may be disposed on the upper surface of the blade housing 120 in front of the at least one shaving blade 110 .

Here, the front and rear of the shaving blade 110 are defined based on the shaving direction of the razor cartridge 10 . Accordingly, in FIG. 1 , the front and rear sides of the shaving blade 110 are a negative Y-axis direction and a positive Y-axis direction, respectively, with respect to the shaving blade 110 .

When shaving, the guard unit 140 may stretch the skin before cutting the hair by the shaving blade 110 .

Through this, the user's body hair may stand in a direction perpendicular to the user's skin surface, and cutting of the body hair by the shaving blade 110 may be made easier.

The guard unit 140 may include a plurality of guard protrusions 142 formed on one surface of the guard unit 140 .

The plurality of guard protrusions 142 may protrude in a direction substantially perpendicular to the upper surface of the blade housing 120 on one surface of the guard unit 140 . For example, the plurality of guard protrusions 142 may protrude in the positive Z-axis direction of FIG. 2 on one surface of the guard unit 140 . However, the present disclosure is not limited thereto.

The plurality of guard protrusions 142 may be made of an elastic material, and through this, it is possible to provide a feeling of soft contact and tension to the user's skin. However, the present disclosure is not limited thereto, and the plurality of guard protrusions 142 may be made of a material other than an elastic material.

The plurality of guard protrusions 142 may have a cylindrical or polygonal shape, but the present disclosure is not limited thereto. For example, the plurality of guard protrusions 142 may have a shape extending long in the longitudinal or transverse direction, or some of the plurality of guard protrusions 142 have a pillar shape and a plurality of guard protrusions ( Another part of 142) may have a shape extending long in the longitudinal or transverse direction.

Here, the transverse direction may be a direction parallel to a shaving direction. For example, in FIG. 1 , the lateral direction is a direction parallel to the Y axis.

The plurality of guard protrusions 142 according to an embodiment of the present disclosure may be evenly distributed and disposed on one surface of the guard unit 140 . Through this, the razor cartridge 10 according to an embodiment of the present disclosure may provide a feeling of soft contact and tension to the user's skin when shaving.

In addition, the plurality of guard protrusions 142 according to an embodiment of the present disclosure may contain a shaving aid in the space between the plurality of guard protrusions 142 . Through this, the razor cartridge 10 according to an embodiment of the present disclosure can provide a shaving aid to the user's skin for a longer period of time.

In addition, the guard protrusion 142 according to an embodiment of the present disclosure may increase the contact area between the user's skin and the guard unit 140 by increasing the total surface area of the guard unit 140 . Through this, the guard unit 140 according to an embodiment of the present disclosure may more effectively stretch the user's skin when shaving.

In addition, the plurality of guard protrusions 142 according to an embodiment of the present disclosure have different protruding heights and different protruding lengths depending on the position where the guard protrusions 142 are disposed. There is a characteristic.

Through this, the plurality of guard protrusions 142 may have different effects in each area of the guard unit 140 . A detailed description related thereto is described with reference to FIGS. 5 to 8 .

In the present specification, the protruding height of the protrusions 142 and 152 is, from a first virtual plane VP1 substantially parallel to the upper surface of the blade housing 120, the tip of the protrusion. refers to the distance to In addition, in this specification, the protruding length of the protrusions 142 and 152 refers to the distance from the point where the protrusions 142 and 152 protrude to the tips of the protrusions 142 and 152 .

Referring back to FIGS. 1 ( a ), 2 , and 3 , the edge part 150 may be disposed on both sides of the blade housing 120 .

The edge portion 150 may include a plurality of edge protrusions 152 formed on one surface of the edge portion 150 .

The plurality of edge protrusions 152 may protrude in a direction substantially perpendicular to the upper surface of the blade housing 120 on one surface of the edge portion 150, but the present disclosure is not limited thereto.

The plurality of edge protrusions 152 may be made of an elastic material, and through this, it is possible to provide a feeling of soft contact and tension to the user's skin. However, the present disclosure is not limited thereto, and the plurality of edge protrusions 152 may be made of a material other than an elastic material.

The plurality of edge protrusions 152 may have a cylindrical or polygonal shape, but the present disclosure is not limited thereto. For example, the plurality of edge protrusions 152 may have a shape elongated in the transverse or longitudinal direction, or some of the plurality of edge protrusions 152 have a columnar shape and the plurality of edge protrusions 152 . ) may have a shape extending long along the longitudinal or transverse direction.

The plurality of edge protrusions 152 may have the same shape as the plurality of guard protrusions 142 , but may have different shapes.

In addition, the plurality of edge protrusions 152 may generally have a larger protrusion height than the plurality of guard protrusions 142 .

Accordingly, the plurality of edge protrusions 152 according to an embodiment of the present disclosure may have better contact with the user's skin compared to the plurality of guard protrusions 142 .

In addition, the plurality of edge protrusions 152 may generally have a larger protrusion length than the plurality of guard protrusions 142 . As the protrusion length of the protrusions 142 and 152 increases, the magnitude of the frictional force generated between the protrusions 142 and 152 and the user's skin may become smaller. Accordingly, the plurality of edge protrusions 152 may provide a softer feeling of contact to the user's skin as compared to the guard protrusions 142 .

In addition, the plurality of edge protrusions 152 according to an embodiment of the present disclosure may contain a shaving aid in a space between the plurality of edge protrusions 152 . Through this, the razor cartridge 10 according to an embodiment of the present disclosure can provide a shaving aid to the user's skin in both sides of the blade housing 120 for a longer period of time.

The plurality of edge protrusions 152 according to an embodiment of the present disclosure are technically characterized in that they are disposed on both sides of the blade housing 120 .

Accordingly, the razor cartridge 10 according to an embodiment of the present disclosure, when shaving an uneven area, by bringing the plurality of edge protrusions 152 into contact with a portion of the curved area, is applied to the user's skin. It provides a softer touch and at the same time has the effect of straightening the skin in the curved area.

Meanwhile, the edge portion 150 may include a front corner region 12 and a rear corner region 14 .

The front edge region 12 may be a region disposed in front of the edge part 150 , and at least a portion of the front edge region 12 may overlap the guard part 140 .

The rear edge region 14 may be a region disposed behind the edge portion 150 .

Specifically, the rear edge region 14 is to be disposed beyond a second virtual plane VP2 perpendicular to the transverse direction and comprising the rearmost shaving blade 110A of the at least one shaving blade 110 . can

The plurality of edge protrusions 152 may be evenly distributed from the front edge region 12 to the rear edge region 14 . Through this, the plurality of edge protrusions 152 according to an embodiment of the present disclosure may be in contact with the user's skin over a wider area.

On the other hand, the protrusion height of the plurality of edge protrusions 152 may have a tendency to increase and then decrease again as it goes from the front edge region 12 to the rear edge region 14 . Accordingly, one end of the plurality of edge protrusions 152 may form a curved upwardly convex profile.

The guard part 140 and the edge part 150 may be formed by injection molding on the blade housing 120 , but the present disclosure is not limited thereto.

The cap unit 160 may be disposed behind the at least one shaving blade 110 . The cap 160 may be made of a rubber material in order to increase the user's skin contact, but the present disclosure is not limited thereto.

The lubrication band 170 may be disposed on the cap part 160 or may be disposed adjacent to the cap part 160 . The lubricating band 170 may include a lubricating material, and when shaving, the lubricating component may be applied to the user's skin.

The lubricating band 170 may be attached to the blade housing 120 by extrusion molding or injection molding, or may be formed by injection molding on the blade housing 120 . However, the present disclosure is not limited thereto.

1(b) and 1(c) , the guard unit 140 includes a first region (R1), a second region (R2), and a third region (R3). , and a fourth region R4 .

The first region R1 may be disposed adjacent to the central region of the guard unit 140 , and the second region R2 may be disposed on both sides of the first region R1 in the longitudinal direction.

The third region R3 may be disposed adjacent to the front region of the guard unit 140 , and the fourth region R4 may be disposed adjacent to the rear of the third region R3 .

At least a portion of the third region R3 and at least a portion of the fourth region R4 may overlap the first region R1 and the second region R2 .

The first region R1 and the second region R2 are for indicating relative positions along the longitudinal direction on the guard unit 140 , and are not limited to a specific position of the guard unit 140 .

Similarly, the third region R3 and the fourth region R4 are for indicating relative positions along the lateral direction on the guard unit 140 , and are not limited to a specific position of the guard unit 140 .

1 to 3 , the razor cartridge 10 according to an embodiment of the present disclosure is illustrated as including both a plurality of guard protrusions 142 and a plurality of edge protrusions 152 , but the present disclosure is limited thereto it is not going to be

For example, the razor cartridge 10 may include only one of the plurality of guard protrusions 142 and the plurality of edge protrusions 152 .

In addition, in FIGS. 1 to 3 , in the razor cartridge 10 according to an embodiment of the present disclosure, a guard protrusion 142 and an edge protrusion 152 are formed on the guard portion 140 and the edge portion 150, respectively. Although shown as being, the present disclosure is not limited thereto.

For example, in the razor cartridge 10 , a plurality of protrusions (not shown) may be formed on the upper surface of the blade housing 120 in all areas except for the area in which the at least one shaving blade 110 is disposed.

4 is a rear view of the razor cartridge 10 according to an embodiment of the present disclosure.

Referring to FIG. 4 , the blade housing 120 may include a receiving portion 124 and a connecting portion 126 disposed on a bottom side of the blade housing 120 .

The receiving unit 124 receives a shaving aid from an aid providing portion (not shown) disposed on a razor handle (not shown), and places the received shaving aid on the upper surface of the blade housing 120 . It can be delivered to the discharge unit 122 that is.

The connector 126 may be connected to a razor handle (not shown) or a connector (not shown) connecting the razor cartridge 10 and the razor handle (not shown). For example, the connection part 126 may be rotatably connected to a razor handle (not shown) or a connector (not shown), but the present disclosure is not limited thereto.

5 is a cross-sectional view of the razor cartridge 10 according to an embodiment of the present disclosure, taken in the V-V' direction of FIG. 1 .

Referring to FIG. 5 , the plurality of guard protrusions 142 may include a first protrusion 142A, a second protrusion 142B, and a third protrusion 142C in at least a partial region of the guard unit 140 . can

The first protrusion 142A, the second protrusion 142B, and the third protrusion 142C are formed in a first region of the guard unit 140 adjacent to the central region of the guard unit 140 (FIG. 1B). ) in R1).

The first protrusion 142A may have a first protrusion height H1.

The second protrusion 142B may be disposed behind the first protrusion 142A, and the second protrusion 142B may have a second protrusion height H2 greater than the first protrusion height H1.

The third protrusion 142C may be disposed behind the second protrusion 142B, and the third protrusion 142C may have a third protrusion height H3 greater than the second protrusion height H2.

Accordingly, in the plurality of guard protrusions 142 , the protrusion height of the guard protrusions 142 may be higher toward the rear of the guard unit 140 in the first region R1 of the guard unit 140 .

In addition, the slope of a first virtual line (N1) passing through one end of the first protrusion 142A and one end of the second protrusion 142B is the one end of the second protrusion 142B and the third protrusion 142C. It may be greater than the slope of the second virtual line (second virtual line, N2) passing through one end of the.

In the present specification, the slope of a virtual line passing through one end of the two protrusions means an angle between the virtual line and the first virtual reference plane VP1.

In addition, as the plurality of guard protrusions 142 disposed in the first region R1 of the guard unit 140 are toward the rear of the guard unit 140, the increase rate of the protrusion height of the guard protrusions 142 becomes smaller. can

Accordingly, in the guard unit 140 according to an embodiment of the present disclosure, by varying the protrusion height and increase rate of the protrusion height of the plurality of guard protrusions 142 disposed in the first region R1, the first region R1 ) to form a gentle curved surface. Accordingly, the razor cartridge 10 according to an embodiment of the present disclosure can provide a user with a smooth shaving feeling without a sense of heterogeneity.

The first protrusion 142A may have a first protrusion length L1, and the second protrusion 142B may have a second protrusion length L2 greater than the first protrusion length L1, and the third protrusion 142C may have a third protrusion length L3 that is greater than the second protrusion length L2 .

As the protrusion length of the protrusions 142 and 152 decreases, the magnitude of the frictional force generated between the protrusions 142 and 152 and the user's skin may increase. In addition, stretching of the guard unit 140 may be greatest in the front region of the first region R1 of the guard unit 140 .

Therefore, the guard unit 140 according to an embodiment of the present disclosure, in the first region R1, by making the protrusion length of the first protrusion 142A disposed in the front relatively small, more appropriately the skin It has a stretchable effect.

In addition, the guard unit 140 according to an embodiment of the present disclosure, in the first region (R1), by increasing the protrusion length of the third protrusion 142C disposed at the rear relatively large, soft to the user's skin It has the effect of providing a sense of contact.

The first protrusion 142A may include a first skin contact surface C1 formed at one end of the first protrusion 142A.

The second protrusion 142B may include a second skin contact surface C2 formed at one end of the second protrusion 142B. The second skin contact surface C2 may have a smaller area than the first skin contact surface C1 .

The third protrusion 142C may include a third skin contact surface C3 formed at one end of the third protrusion 142C. The third skin contact surface C3 may have a smaller area than the second skin contact surface C2 .

As described above, the pulling of the guard unit 140 may be greatest in the front of the first region R1 of the guard unit 140 .

Therefore, the guard unit 140 according to an embodiment of the present disclosure makes the skin contact surface of the first protrusion 142A disposed in front of the first region R1 relatively large, so that the user's skin is more There is an effect of properly maintaining contact.

Also, an area difference between the first skin contact surface C1 and the second skin contact surface C2 may be greater than an area difference between the second skin contact surface C2 and the third skin contact surface C3 . In other words, as the plurality of guard protrusions 142 disposed in the first region R1 of the guard unit 140 are toward the rear of the guard unit 140, the area reduction rate of the skin contact surface of the guard protrusions 142 increases. can be small

Through this, the guard unit 140 according to an embodiment of the present disclosure may provide a softer shaving feeling to the user.

The first protrusion 142A, the second protrusion 142B, and the third protrusion 142C may be disposed along the lateral direction in the first region R1 of the guard unit 140 .

In this case, the first protrusion 142A, the second protrusion 142B, and the third protrusion 142C may be arranged in a line along the lateral direction or may be disposed to be shifted from each other along the lateral direction.

The first protrusion 142A, the second protrusion 142B, and the third protrusion 142C have a relative position of the guard protrusion 142 in the lateral direction on the first region R1 of the guard unit 140 . As an illustration, it is not limited to the guard protrusion 142 at a specific position among the plurality of guard protrusions 142 .

6 is a cross-sectional view of the razor cartridge 10 according to an embodiment of the present disclosure, taken in the direction VI-VI' of FIG. 1 .

Referring to FIG. 6 , the plurality of guard protrusions 142 include a fourth protrusion 142D and a fifth protrusion ( 142E).

At least a portion of the second region R2 may be adjacent to one side of the first region R1 in the longitudinal direction. Accordingly, the second region R2 may be disposed on both sides of the first region R1 in the longitudinal direction on the guard unit 140 .

The fourth protrusion 142D may have a fourth protrusion height H4 and may have a fourth protrusion length L4.

The fifth protrusion 142E may be disposed behind the fourth protrusion 142D. The fifth protrusion 142E may have a fifth protrusion height H5 greater than the fourth protrusion height H4 , and may have a fifth protrusion length L5 smaller than the fourth protrusion length L4 .

The pulling of the guard unit 140 may be relatively small in the front region of the second region R2 of the guard unit 140 .

Accordingly, in the guard unit 140 according to an embodiment of the present disclosure, the protrusion length of the fourth protrusion 142D disposed in the front of the second region R2 is relatively large, so that the front of the guard unit 140 is There is an effect of providing a soft feeling of contact to the user's skin in the area.

The fourth protrusion 142D and the fifth protrusion 142E may be disposed along the lateral direction. In this case, the fourth protrusion 142D and the fifth protrusion 142E may be disposed in a line along the lateral direction or may be disposed to be shifted from each other along the lateral direction.

The fourth protrusion 142D and the fifth protrusion 142E are for indicating the relative positions of the guard protrusions 142 in the lateral direction on the second region R2 of the guard portion 140, and include a plurality of guards. It is not limited to the guard protrusion 142 of a specific position among the protrusions 142 .

7 is a bottom view of the razor cartridge 10 according to an embodiment of the present disclosure.

Referring to FIG. 7 , the plurality of guard protrusions 142 may include a sixth protrusion 142F.

The sixth protrusion 142F may be disposed to be spaced apart from the fourth protrusion 142D in the outer longitudinal direction in the second region R2 .

Meanwhile, the first protrusion 142A, the fourth protrusion 142D, and the sixth protrusion 142F may be disposed in a third region (R3 of FIG. 1C ) of the guard part 140 . .

The third region R3 is a region adjacent to the front of the guard unit 140 , and at least a portion of the third region R3 may overlap the first region R1 and the second region R2 .

The fourth protrusion 142D may have a fourth protrusion height H4 that is greater than the first protrusion height H1, and the sixth protrusion 142F has a sixth protrusion height H6 that is greater than the fourth protrusion height H4. ) can have

Accordingly, the plurality of guard protrusions 142, in the third region R3 of the guard portion 140, from the center of the guard portion 140, edge portions 150 disposed on both sides of the blade housing 120. As it faces, the protrusion height of the guard protrusion 142 may be higher.

Specifically, the plurality of guard protrusions 142, in the third region R3 of the guard unit 140, from the center of the guard unit 140 toward the front edge region 12, the guard protrusions 142 may have a higher protrusion height.

In addition, the slope of a third virtual line (N3) passing through one end of the first protrusion 142A and one end of the fourth protrusion 142D is determined by the slope of one end of the fourth protrusion 142D and the sixth protrusion 142F. It may be smaller than the slope of the fourth virtual line (N4) passing through one end of the.

In addition, the plurality of guard protrusions 142 disposed in at least a partial area of the guard unit 140 toward the front edge area 12 from the center of the guard unit 140, the guard protrusion 142 of the protrusion height of The rate of increase may be greater.

Accordingly, one end of the plurality of guard protrusions 142 according to an embodiment of the present disclosure may form a curved profile concave downward by configuring the protrusion height and the increase rate of the protrusion height differently.

Accordingly, the razor cartridge 10 according to an embodiment of the present disclosure may naturally wrap the user's skin in the third region R3 of the guard unit 140 and provide a better shaving feeling to the user.

Meanwhile, the fourth protrusion 142D may have a fourth protrusion length L4 greater than the first protrusion length L1 , and the sixth protrusion 142F has a sixth protrusion length greater than the fourth protrusion length L4 . (L6).

As the protrusion length of the protrusions 142 and 152 decreases, the magnitude of the frictional force generated between the protrusions 142 and 152 and the user's skin may increase.

Therefore, the guard unit 140 according to an embodiment of the present disclosure, in the third region R3, by making the protrusion length of the first protrusion 142A disposed in the center relatively small, more appropriately the skin It has a pulling effect.

In addition, the guard portion 140 according to an embodiment of the present disclosure, in the third region R3, by increasing the protrusion length of the sixth protrusion 142F disposed at the rear relatively large, soft to the user's skin. It has the effect of providing a sense of contact.

The first protrusion 142A, the fourth protrusion 142D, and the sixth protrusion 142F may be disposed along the longitudinal direction in the third region R3 of the guard part 140 .

In this case, the first protrusion 142A, the fourth protrusion 142D, and the sixth protrusion 142F may be arranged in a line along the longitudinal direction or may be displaced from each other along the longitudinal direction.

The first protrusion 142A, the fourth protrusion 142D, and the sixth protrusion 142F have a relative position of the guard protrusion 142 in the longitudinal direction on the third region R3 of the guard unit 140 . As an illustration, it is not limited to the guard protrusion 142 at a specific position among the plurality of guard protrusions 142 .

8 is a cross-sectional view of the razor cartridge 10 according to an embodiment of the present disclosure, taken in a direction VIII-VIII' of FIG. 1 .

Referring to FIG. 8 , the fifth protrusion 142E may be disposed to be spaced apart from the third protrusion 142C in the outer longitudinal direction.

The third protrusion 142C and the fifth protrusion 142E may be disposed in a fourth region R4 of FIG. 1C .

The fourth region R4 is a region adjacent to the rear of the third region R3 , and at least a portion of the fourth region R4 may overlap the first region R1 and the second region R2 .

A difference between the fifth protrusion height H5 and the third protrusion height H3 may be smaller than a difference between the fourth protrusion height H4 and the first protrusion height H1 .

That is, the plurality of guard protrusions 142 disposed in the fourth region R4 may have relatively uniform protrusion heights compared to the plurality of guard protrusions 142 disposed in the third region R3. .

The third protrusion 142C and the fifth protrusion 142E may be disposed along the longitudinal direction in the fourth region R4 of the guard unit 140 .

In this case, the third protrusion 142C and the fifth protrusion 142E may be arranged in a line along the longitudinal direction or may be displaced from each other along the longitudinal direction.

The third protrusion 142C and the fifth protrusion 142E are for indicating the relative positions of the guard protrusions 142 in the longitudinal direction on the fourth region R4 of the guard portion 140, and include a plurality of guards. It is not limited to the guard protrusion 142 of a specific position among the protrusions 142 .

The above description is merely illustrative of the technical idea of this embodiment, and various modifications and variations will be possible without departing from the essential characteristics of the present embodiment by those skilled in the art to which this embodiment belongs. Accordingly, the present embodiments are intended to explain rather than limit the technical spirit of the present embodiment, and the scope of the technical spirit of the present embodiment is not limited by these embodiments. The protection scope of this embodiment should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present embodiment.

110: shaving blade 120: blade housing
130: clip 140: guard part
142: guard protrusion 150: edge portion
152: edge protrusion 160: cap portion
170: lubrication band

Claims (24)

delete delete delete delete delete delete delete delete delete delete delete delete delete delete at least one shaving blade having a cutting edge; and
a blade housing longitudinally receiving said at least one shaving blade; and
A guard portion disposed in front of the at least one shaving blade, comprising a guard portion including a plurality of guard protrusions formed on one surface of the guard portion,
The plurality of guard protrusions may include a first protrusion in at least a partial region of the guard unit, a fourth protrusion disposed to be spaced apart from the first protrusion in an outer longitudinal direction and having a higher protrusion height than the first protrusion, and the fourth and a sixth protrusion disposed to be spaced apart from the protrusion in the outer longitudinal direction and having a higher protrusion height than the fourth protrusion,
The protrusion length of the first protrusion is smaller than the protrusion length of the fourth protrusion, and the protrusion length of the fourth protrusion is smaller than the protrusion length of the sixth protrusion,
The first protrusion, the fourth protrusion, and the sixth protrusion are arranged in a line along the longitudinal direction,
The razor cartridge, characterized in that when viewed from the front side of the guard portion, the first protrusion, the fourth protrusion, and the sixth protrusion do not overlap each other. delete 16. The method of claim 15,
The razor cartridge according to claim 1, wherein the first protrusion, the fourth protrusion, and the sixth protrusion are disposed in a third area adjacent to the front of the guard part. 16. The method of claim 15,
A slope of a third virtual straight line passing through one end of the first protrusion and one end of the fourth protrusion is smaller than a slope of a fourth virtual straight line passing through one end of the fourth protrusion and one end of the sixth protrusion. cartridge. 18. The method of claim 17,
The plurality of guard protrusions may include a third protrusion and a fifth protrusion disposed to be spaced apart from the third protrusion in the outer longitudinal direction in a fourth region of the guard part, at least a portion of which is adjacent to the rear one side of the third region. including more,
The third protrusion and the fifth protrusion are disposed along the longitudinal direction. 20. The method of claim 19,
The third protrusion is a razor cartridge, characterized in that it has a higher protrusion height than the first protrusion. 16. The method of claim 15,
The plurality of guard protrusions, on one surface of the guard part, further comprising a second protrusion disposed behind the first protrusion and a third protrusion disposed behind the second protrusion,
A slope of a first virtual straight line passing through one end of the first protrusion and one end of the second protrusion is greater than a slope of a second virtual straight line passing through one end of the second protrusion and one end of the third protrusion. cartridge. 16. The method of claim 15,
The plurality of guard projections is a razor cartridge, characterized in that made of an elastic material. 16. The method of claim 15,
The plurality of guard projections is a razor cartridge, characterized in that it includes a projection having a cylindrical or polygonal shape. at least one shaving blade having a cutting edge; and
a blade housing longitudinally receiving said at least one shaving blade; and
A guard portion disposed in front of the at least one shaving blade, comprising a guard portion including a plurality of guard protrusions formed on one surface of the guard portion,
The plurality of guard protrusions may include a first protrusion in at least a partial region of the guard unit, a fourth protrusion disposed to be spaced apart from the first protrusion in an outer longitudinal direction and having a higher protrusion height than the first protrusion, and the fourth and a sixth protrusion disposed to be spaced apart from the protrusion in the outer longitudinal direction and having a higher protrusion height than the fourth protrusion,
The first protrusion is disposed in the central region of the guard,
The first protrusion, the fourth protrusion, and the sixth protrusion are arranged in a line along the longitudinal direction,
The razor cartridge, characterized in that when viewed from the front side of the guard portion, the first protrusion, the fourth protrusion, and the sixth protrusion do not overlap each other.

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