Electric shaver

Abstract

The present disclosure provides an electric shaver capable of further suppressing irritation to the skin. The electric shaver of the present disclosure is provided with: a main body portion held by a user; a head portion having three or more blade assemblies; and a head support portion connecting the head portion and the main body portion. The head support portion supports the head portion so as to be able to float with respect to the main body portion. The head portion is provided with: a housing portion supporting the three or more blade assemblies; and a blade float portion allowing the three or more blade assemblies to respectively float with respect to the housing portion. The head support portion applies a first force to the head portion in a direction in which the head portion is caused to float, the first force being greater than a second force applied by the blade float portion to a plurality of blade assemblies, which is less than the three or more blade assemblies, in a direction in which the plurality of blade assemblies are caused to float, and less than a third force applied by the blade float portion to all of the three or more blade assemblies in a direction in which the three or more blade assemblies are caused to float.

Description

TECHNICAL FIELD

[0001] The present application relates to an electric shaver. BACKGROUND

[0002] In the past, in an electric shaver, a main body to be gripped by a user, a head having a shaving function, and a head support portion connecting the main body and the head are provided (for example, refer to Patent Document 1). The head support portion supports the head so as to float with respect to the main body. On the other hand, the head has a plurality of blade assemblies for shaving, and each blade assembly is supported by a blade float portion so as to float with respect to the head. Here, the head support portion applies a force to the head so as to float the head in a manner set to be greater than a force applied by the blade float portion to each blade assembly so as to float the blade assembly. Thus, in a case where only one blade assembly is brought into contact with the skin, the head does not sink, and thus an operation without discomfort can be performed.

[0003] Further, the head support portion applies a force to the head so as to float the head in a manner set to be smaller than a sum of forces applied by the blade float portion to each blade assembly so as to float the blade assembly. Thus, in a case where all of the blade assemblies are suddenly brought into contact with the skin with a force applied, the head immediately sinks, and thus a case where a part of the blade assemblies strongly come into contact with the skin can be suppressed, and thus irritation to the skin can be suppressed.

[0004] Prior art documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2016-101366 SUMMARY

[0007] PROBLEMS TO BE SOLVED BY THE INVENTION

[0008] However, in a case where all of the blade assemblies are continuously pressed against the skin, even if the head sinks, the force is dispersed to each blade assembly, and thus there is a case where any of the blade assemblies continuously maintains an initial height without sinking with respect to the head. Thus, there is a risk that a part of the blade assemblies continuously strongly come into contact with the skin, and increase irritation to the skin.

[0009] Therefore, an object of the present application is to provide an electric shaver capable of further suppressing irritation to the skin.

[0010] SOLUTION TO PROBLEM

[0011] To achieve the above object, an electric shaver according to an aspect of the present application includes: a main body portion held by a user; a head portion having three or more blade assemblies each including an outer blade and an inner blade disposed inside the outer blade and sliding with respect to the outer blade; and a head support portion connecting the head portion and the main body portion, the head support portion supporting the head portion so as to be able to float with respect to the main body portion, the head portion including: a housing portion supporting the three or more blade assemblies; and a blade floating portion allowing the three or more blade assemblies to individually float with respect to the housing portion, the head support portion applying a first force to the head portion in a direction in which the head portion is to float, the first force being greater than a second force applied by the blade floating portion to a number of blade assemblies less than the three or more blade assemblies in a direction in which the number of blade assemblies is to float, and the first force being less than a third force applied by the blade floating portion to all of the three or more blade assemblies in the direction in which the head portion is to float.

[0012] Effects of the Invention

[0013] According to the electric shaver of the present application, the irritation to the skin can be further suppressed. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 FIG. 1 is a perspective view showing the overall structure of an electric shaver according to an embodiment of the present application.

[0015] Figure 2 FIG. 4 is a schematic view showing each floating portion of the head portion and the head support portion according to the embodiment.

[0016] Figure 3 FIG. 6 is a graph showing the relationship between the pressing load applied to the head portion as a whole and the sinking amount of each blade assembly and the head portion according to the embodiment.

[0017] EXPLANATION OF REFERENCE NUMERALS

[0018] 10: main body portion; 11: handle; 12: power switch; 20: head portion; 21: housing portion; 21A: upper housing portion; 21B: lower housing portion; 30: blade assembly; 31: slit blade assembly; 32: mesh blade assembly; 40: blade floating portion; 42: elastic body; 50: head support portion; 51: head floating portion; 52: elastic body; 311: slit blade; 312, 322: inner blade; 313: slit; 321: mesh blade. DETAILED DESCRIPTION

[0019] Hereinafter, an embodiment of the electric shaver of the present application will be described with reference to the drawings. Further, the following embodiment is cited as an example for describing the present application, and is not intended to limit the present application. For example, the shape, configuration, material, constituent element, relative positional relationship, connection state, numerical value, formula, content of each stage in the method, order of each stage, and the like shown in the following embodiment are cited as an example, and there are cases including contents not described below. In addition, there are cases where expressions of parallel, orthogonal, and the like of geometry are used, but these expressions do not indicate strict limitations in mathematics, but include substantially allowable errors, deviations, and the like. In addition, expressions of simultaneously, identically, and the like also include substantially allowable ranges. In addition, the drawings are schematic views in which appropriate emphasis, omission, or adjustment of scale is performed for describing the present application, and are different from actual shapes, positional relationships, and scales.

[0020] In addition, there are cases where a plurality of inventions are collectively described as one embodiment below. In addition, a part of the contents described below is described as an arbitrary constituent element related to the present application.

[0021] (Structure of electric shaver)

[0022] Figure 1 is a perspective view showing an electric shaver. Further, in the electric shaver 100, there are portions in which edges are chamfered with a circular arc, and in which concavities and convexities for preventing slipping are provided, but the illustrations thereof are omitted.

[0023] As shown in Figure 1 , the electric shaver 100 includes a main body portion 10 having a plurality of elements constituting the electric shaver 100, a head portion 20 having a shaving function, and a head support portion 50 connecting the main body portion 10 and the head portion 20 (see Figure 2 ). The main body portion 10 includes a grip 11 to be gripped by a user, a power switch 12 to switch on and off the power supply to the main body portion 10, and a power supply portion (omitted from the illustration) to supply electric power to a driving source (omitted from the illustration) built in the head portion 20.

[0024] Figure 2 is a schematic view showing each floating portion of the head portion 20 and the head support portion 50 of the embodiment. As shown in Figure 2 , the head support portion 50 has a head floating portion 51 to support the head portion 20 so as to float with respect to the main body portion 10. The head floating portion 51 has an elastic body 52 such as a spring or rubber to apply a force to the head portion 20 in a direction in which the head portion 20 floats with respect to the main body portion 10, that is, a direction in which the head portion 20 is away from the main body portion 10. The head floating portion 51 maintains the head portion 20 in a state in which the head portion 20 floats with respect to the main body portion 10 to the maximum extent in a case where the head portion 20 is not subjected to an external force. When the head portion 20 is subjected to an external force, the elastic body 52 is contracted in the head floating portion 51, and thus the head portion 20 sinks toward the main body portion 10.

[0025] The head 20 includes a housing 21 that forms the exterior, multiple blade assemblies 30, a blade floating section 40, and a drive source. The drive source is, for example, a linear motor, which is connected to each blade assembly 30 via a transmission mechanism (not shown). Thus, power from the drive source is transmitted to each blade assembly 30 via the transmission mechanism, thereby enabling each blade assembly 30 to operate.

[0026] The housing portion 21 houses the blade float portion 40 and the drive source, and supports multiple blade assemblies 30. The housing portion 21 has an upper housing portion 21A that houses the blade float portion 40 and multiple blade assemblies 30, and a lower housing portion 21B that houses the drive source. The upper end of each blade assembly 30 protrudes from the upper surface of the upper housing portion 21A. The housing portion 21 is formed by combining the upper housing portion 21A and the lower housing portion 21B.

[0027] Multiple blade assemblies 30 are configured such that their respective extending directions are parallel to the Y-axis direction. The multiple blade assemblies 30 include slit blade assemblies 31 and mesh blade assemblies 32. In this embodiment, the multiple blade assemblies 30 include two slit blade assemblies 31 and four mesh blade assemblies 32. The two slit blade assemblies 31 are arranged at predetermined intervals in the X-axis direction. One mesh blade assembly 32 is arranged on each side of each slit blade assembly 31 in the X-axis direction. In other words, the multiple blade assemblies 30 are arranged along the X-axis in the following order: mesh blade assembly 32, slit blade assembly 31, mesh blade assembly 32, mesh blade assembly 32, slit blade assembly 31, mesh blade assembly 32.

[0028] The slit blade assembly 31 is used to cut longer hairs that are difficult to shave with the mesh blade assembly 32. The slit blade assembly 31 has a slit blade 311 as the outer blade and an inner blade 312. The slit blade 311 is a long strip in the Y-axis direction and appears as an inverted U-shape when viewed from the Y-axis direction. Figure 1 As shown, multiple slits 313 extending along the X-axis are formed at both ends of the upper surface of the slit blade 311 on the X-axis direction. The multiple slits 313 are arranged along the Y-axis direction, and the portions between the slits 313 function as blades. In the slit blade 311, the size of the upper opening in the height direction is formed to be larger than that of the mesh blade 321 described later, thus enabling the introduction and cutting of hairs longer than those introduced by the mesh blade assembly 32.

[0029] like Figure 2As shown, the inner blade 312 is arranged inside the slit blade 311 and is a member that cuts the hair that has entered the respective slits 313 between the portions thereof between the respective slits 313 by sliding with respect to the inner surface of the slit blade 311. The shape and the manner of operation of the inner blade 312 are determined in relation to the slit blade 311 and are not particularly limited. In the case of the present embodiment, the shape of the inner blade 312 is a shape in which a plurality of blade edges that conform to the shape of the inner surface of the slit blade 311 are arranged in the extension direction (the Y-axis direction in the drawing) of the slit blade 311. The power of the drive source is transmitted to the inner blade 312 via a transmission mechanism. The inner blade 312 reciprocates in the extension direction (the Y-axis direction in the drawing) of the slit blade 311 by the power from the drive source that is transmitted via the transmission mechanism. Thereby, the hair that has entered the respective slits 313 is pinched between the portions thereof between the respective slits 313 and the blade edges of the inner blade 312 and is cut.

[0030] The mesh blade assembly 32 is a portion for cutting the hair that is shorter than the hair cut by the slit blade 311. The mesh blade assembly 32 has a mesh blade 321 as an outer blade, and an inner blade 322. The mesh blade 321 is a member that is long in the Y-axis direction and is in the shape of an inverted letter U when viewed in the Y-axis direction, and is formed so that the upper surface thereof is curved convexly in the Y-axis direction cross section. The mesh blade 321 is a member that is thinner in thickness than the wall thickness of the upper surface of the slit blade 311. The mesh blade 321 is a mesh blade that is formed by bending a thin plate provided with a plurality of holes, and assumes the function of deep shaving that shaves the shorter hair from the roots.

[0031] The inner blade 322 is arranged inside the mesh blade 321 and is a member that cuts the hair that has entered the respective holes of the mesh blade 321 between the respective holes by sliding with respect to the inner surface of the mesh blade 321. The shape and the manner of operation of the inner blade 322 are determined in relation to the mesh blade 321 and are not particularly limited. In the case of the present embodiment, the shape of the inner blade 322 is a shape in which a plurality of blade edges that conform to the shape of the inner surface of the mesh blade 321 are arranged in the extension direction (the Y-axis direction in the drawing) of the mesh blade 321. The power of the drive source is transmitted to the inner blade 322 via a transmission mechanism. The inner blade 322 reciprocates in the extension direction (the Y-axis direction in the drawing) of the mesh blade 321 by the power from the drive source that is transmitted via the transmission mechanism. Thereby, the hair that has entered the respective holes of the mesh blade 321 is pinched between the respective holes and the blade edges of the inner blade 322 and is cut.

[0032] The blade floating section 40 is a part that allows each blade assembly 30 to float freely relative to the housing section 21. The blade floating section 40 has multiple elastic bodies 42, such as springs or rubber, that apply force to each blade assembly 30 individually in the direction of buoyancy from the housing section 21 (i.e., away from the housing section 21). Specifically, the elastic bodies 42 are arranged relative to each blade assembly 30, thus enabling individual force application to each blade assembly 30. Each elastic body 42 can be configured to apply force to each blade assembly 30 without restricting the movement of the inner blades 312, 322 of each blade assembly 30. The blade floating section 40 maintains each blade assembly 30 in a state of maximum buoyancy relative to the housing section 21 when no external force is applied. When an external force is applied to each blade assembly 30 in the direction of sinking into the housing section 21 (i.e., the direction in which each blade assembly 30 approaches the housing section 21), the elastic bodies 42 in the blade floating section 40 contract, thus causing each blade assembly 30 to sink towards the housing section 21.

[0033] Here, the initial positions of each blade assembly 30 are explained. The initial position refers to the position of each blade assembly 30 when it is not subjected to external force, i.e., when it is not in contact with the skin. Figure 2 The diagram shows the state of each blade assembly 30 in its initial position.

[0034] like Figure 2 As shown, the initial positions of the two innermost mesh blade assemblies 32 among the multiple blade assemblies 30 are set at the same position, and the top part (i.e. the upper end) protrudes from the housing part 21 from the other blade assemblies 30.

[0035] Furthermore, the initial positions of the two outermost mesh blade assemblies 32 among the plurality of blade assemblies 30 are set at the same position, and the top end (i.e., the upper end) protrudes from each slit blade assembly 31 relative to the housing portion 21. That is, the initial position of each slit blade assembly 31 is not protruding from the housing portion 21 as other blade assemblies 30, and is set at the same position.

[0036] Furthermore, the lowest point of each blade assembly 30 is set such that, when each blade assembly 30 is at its maximum depth, the top part (i.e., the upper end) of each blade assembly 30 is at the same position.

[0037] (Forces acting on each floating component)

[0038] Next, the relationship of the forces applied to each of the floating portions (i.e., the head floating portion 51 and the blade floating portion 40) will be described. Hereinafter, the force applied by the head floating portion 51 to the head 20 will be referred to as a first force. Also, the force applied by the blade floating portion 40 to the four mesh blade assemblies 32 will be referred to as a meshing force. The meshing force is an example of a second force. The second force refers to a force applied by the blade floating portion 40 to a plurality of blade assemblies 30 that is more than one less than the three or more blade assemblies 30 in the direction in which the blade assemblies 30 float. Thus, in the present embodiment, the force applied to the four blade assemblies 30 (i.e., the mesh blade assemblies 32) that is more than one less than the six blade assemblies 30 will be taken as an example of the second force. In other words, the second force (e.g., the meshing force) is the sum of the forces applied to each of the mesh blade assemblies 32. In the present embodiment, the forces applied to each of the mesh blade assemblies 32 are set to be equal. Thus, the sum of the forces applied to the two mesh blade assemblies 32 located at the innermost side is also the same as the sum of the forces applied to the two mesh blade assemblies 32 located at the outermost side. Also, the forces applied to each of the mesh blade assemblies 32 can be different.

[0039] The force applied by the blade floating portion 40 to the two slit blade assemblies 31 will be referred to as a slit force. In the present embodiment, a case in which the meshing force (i.e., one type of the second force) is set to be smaller than the slit force is exemplified, but the meshing force can be equal to or larger than the slit force.

[0040] Here, if the sum of the meshing force and the slit force is taken as a third force, the first force is set to be larger than the second force and smaller than the third force. The spring constants of the elastic bodies 52 of the head floating portion 51 and the elastic bodies 42 of the blade floating portion 40 are set in such a manner as to satisfy this relationship.

[0041] Figure 3 is a graph showing the relationship between the pressing load applied to the head 20 as a whole of the embodiment and the sinkage amounts of each of the blade assemblies 30 and the head 20. In Figure 3 , the lighter dot-shaded portion indicates the sinkage amount of each of the blade assemblies 30, and the darker dot-shaded portion indicates the sinkage amount of the head 20.

[0042] First, the two mesh blade assemblies 32 located at the innermost side, which are most prominent in the initial position, come into contact with the skin, and the pressing load increases in this state. As Figure 3 indicated, when the pressing load reaches the point pl and is larger than the sum of the forces applied to the two mesh blade assemblies 32 located at the innermost side, the two mesh blade assemblies 32 start to sink.

[0043] Next, when the pressing load reaches the point p2, the skin comes into abutment with the two mesh blade assemblies 32 that are the outermost of the slit blade assemblies 31 protruding from the initial position. During the period from this time until the pressing load exceeds the meshing use force (i.e., between the point p2 and the point p3), the outermost two mesh blade assemblies 32 do not act, and thus the amount of sinking is constant.

[0044] Next, when the pressing load reaches the point p3 and becomes greater than the meshing use force, the outermost two mesh blade assemblies 32 start to sink.

[0045] Next, when the pressing load reaches the point p4, the skin comes into abutment with the two slit blade assemblies 31. During the period from this time until the pressing load exceeds the third use force (i.e., between the point p4 and the point p6), the two slit blade assemblies 31 do not act, and thus the amount of sinking of each blade assembly 30 is constant.

[0046] Here, the point p5 is the time at which the pressing load is equal to the first use force. When the pressing load exceeds the point p5, the head 20 starts to sink. That is, the head 20 starts to sink in a state in which all of the blade assemblies 30 are in abutment with the skin.

[0047] Next, when the pressing load reaches the point p6 and becomes greater than the third use force, the two slit blade assemblies 31 start to sink. During the period from this time until each blade assembly 30 reaches the lowest point (i.e., between the point p6 and the point p7), each blade assembly 30 sinks equally. Likewise, the head 20 also gradually increases the amount of sinking.

[0048] Next, when the pressing load reaches the point p7 and each blade assembly 30 sinks to the lowest point, although the amount of sinking of each blade assembly 30 is constant thereafter, the amount of sinking of the head 20 is still increasing. Finally, when the pressing load reaches the point p8 and the head 20 sinks to the lowest point, the amount of sinking of the head 20 also becomes constant.

[0049] (Effects, etc.)

[0050] As described above, the electric shaver 100 of the present embodiment includes the main body 10 to be held by the user, the head 20 having three or more blade units 30 each having an outer blade (i.e., a slit blade 311, a mesh blade 321) and an inner blade 312, 322 disposed inside the outer blade and sliding with respect to the outer blade, and the head support 50 connecting the head 20 and the main body 10. The head support 50 supports the head 20 so as to be able to float with respect to the main body 10. The head 20 includes the housing 21 supporting the three or more blade units 30, and the blade float 40 allowing the three or more blade units 30 to individually float with respect to the housing 21. The head support 50 applies a first force to the head 20 in a direction to float larger than a second force applied by the blade float 40 to one or more blade units 30 of the three or more blade units 30 in the direction to float, and smaller than a third force applied by the blade float 40 to all of the three or more blade units 30 in the direction to float.

[0051] Thus, the first force is larger than the second force and smaller than the third force, so the one or more blade units 30 (four mesh blade units 32 in the present embodiment) sink before the head 20 starts to sink. That is, after the one or more blade units 30 come into contact with the skin and sink with respect to the initial position, the head 20 starts to sink. Thus, it is possible to suppress the situation where one blade unit 30 continues to strongly contact the skin before the head 20 sinks. Therefore, it is possible to further suppress irritation to the skin.

[0052] In addition, in a case where an excessive force (e.g., a force larger than the third force) is abruptly applied to the blade unit 30, the head 20 also starts to sink together with the blade unit 30. In this case, it is also possible to further suppress irritation to the skin.

[0053] In addition, the head 20 has five or more blade units 30. The blade float 40 allows the five or more blade units 30 to individually float with respect to the housing 21. The second force is a force applied by the blade float 40 to four blade units 30 of the five or more blade units in the direction to float. The third force is a force applied by the blade float 40 to all of the five or more blade units 30 in the direction to float.

[0054] Thus, the second force is a force applied to the four blade assemblies 30 in the direction of floating, and the third force is a force applied to all of the five or more blade assemblies 30 in the direction of floating. Therefore, the head 20 starts to sink during the period from when the four blade assemblies 30 start to sink to when all of the blade assemblies 30 start to sink. That is, before the head 20 starts to sink, the four blade assemblies 30 sink from the initial positions in the state of abutting against the skin, and thus the abutting area against the skin can be increased, and the irritation to the skin can be further suppressed.

[0055] In addition, the three or more blade assemblies 30 include the mesh blade assembly 32 having the mesh blade 321 as the outer blade, and the slit blade assembly 31 having the slit blade 311 in which a plurality of slits 313 are formed as the outer blade. The object to which the second force is applied by the blade floating portion 40 is the mesh blade assembly 32.

[0056] The mesh blade assembly 32 is a portion that is more suitable for deep shaving than the slit blade assembly 31, and thus it is desirable to reliably abut the mesh blade assembly 32 against the skin more than the slit blade assembly 31. That is, if the second force is applied to the mesh blade assembly 32 that is desired to abut against the skin more than the slit blade assembly 31, the head 20 can reliably start to sink after the mesh blade assembly 32 starts to sink by abutting against the skin.

[0057] In addition, the initial position of the mesh blade assembly 32 is more protruded from the housing portion 21 than the initial position of the slit blade assembly 31.

[0058] Thus, the initial position of the mesh blade assembly 32 is more protruded from the housing portion 21 than the initial position of the slit blade assembly 31, and thus the mesh blade assembly 32 can reliably abut before the slit blade assembly 31. Therefore, it is easy to abut the mesh blade assembly 32 against a complicated portion such as under the nose.

[0059] In addition, the force applied to the mesh blade assembly 32 is smaller than the force applied to the slit blade assembly 31.

[0060] Thus, the force applied to the mesh blade assembly 32 is smaller than the force applied to the slit blade assembly 31, and thus the mesh blade assembly 32 can sink more easily than the slit blade assembly 31. That is, the impact absorbing force of the mesh blade assembly 32 that first contacts the skin can be improved, and the irritation to the skin can be further suppressed.

[0061] (Other)

[0062] The above describes the electric shaver of the present application based on the above-described embodiment, but the present application is not limited to the above-described embodiment.

[0063] For example, in the above-described embodiment, the electric shaver 100 having six blade assemblies 30 is exemplified. However, the total number of blade assemblies can be three or more. For example, in the case where the blade assemblies are three, the second force can be set to the force acting on two blade assemblies, the third force can be set to the force acting on all of the three blade assemblies, and the first force can be set to be greater than the second force and smaller than the third force. In addition, in the case where the blade assemblies are five, the second force can be set to the force acting on four blade assemblies, the third force can be set to the force acting on all of the five blade assemblies, and the first force can be set to be greater than the second force and smaller than the third force.

[0064] In addition, in the above-described embodiment, the case where the object to which the second force is applied is only the mesh blade assembly 32 is exemplified. However, the object to which the second force is applied can be only the slit blade assembly, or both the mesh blade assembly and the slit blade assembly.

[0065] In addition, in the above-described embodiment, the case where the number of each blade assembly 30 is exemplified as four mesh blade assemblies 32 and two slit blade assemblies 31. However, the number of mesh blade assemblies and slit blade assemblies can be one or more.

[0066] In addition, in the above-described embodiment, the case where the arrangement of each blade assembly 30 is exemplified as two mesh blade assemblies 32 at the outermost side and two mesh blade assemblies 32 at the innermost side, and one slit blade assembly 31 between the mesh blade assemblies 32 at the outermost side and the mesh blade assemblies 32 at the innermost side. However, either one or both of the outermost sides can be a slit blade assembly, or three or more of the same kind of blade assemblies can be arranged continuously.

[0067] In addition, in the above-described embodiment, the case where the initial position of the mesh blade assembly 32 protrudes from the housing portion 21 more than the initial position of the slit blade assembly 31 is exemplified. However, the initial position of the slit blade assembly can protrude from the housing portion more than the initial position of the mesh blade assembly.

[0068] Further, various modifications that can be conceived by those skilled in the art to the embodiments, and configurations obtained by arbitrarily combining the constituent elements and functions in the embodiments within a range not departing from the gist of the present application are also included in the present application.

[0069] Industrial Applicability

[0070] The present application can be applied to an electric shaver capable of shaving the body hair of an animal including a human being, such as a so-called electric shaver.

Claims

1. An electric shaver, wherein the electric shaver is provided with: a main body portion held by a user; a head portion having three or more blade assemblies each having an outer blade and an inner blade disposed on an inner side of the outer blade and sliding with respect to the outer blade; and a head support portion connecting the head portion and the main body portion, the head support portion supports the head portion so as to be able to float and sink with respect to the main body portion, the head portion is provided with: a housing portion supporting the three or more blade assemblies; and a blade floating portion allowing the three or more blade assemblies to respectively float and sink with respect to the housing portion, a first force applied by the head support portion to the head portion in a direction of floating is greater than a second force applied by the blade floating portion to a plurality of blade assemblies less than the three or more blade assemblies in the direction of floating, and is less than a third force applied by the blade floating portion to all of the three or more blade assemblies in the direction of floating, the three or more blade assemblies are five or more blade assemblies in the head portion, the blade floating portion allows the five or more blade assemblies to respectively float and sink with respect to the housing portion, the second force is a force applied by the blade floating portion to four blade assemblies of the five or more blade assemblies in the direction of floating, and the third force is a force applied by the blade floating portion to all of the five or more blade assemblies in the direction of floating.

2. The electric shaver according to claim 1, wherein the three or more blade assemblies include a mesh blade assembly having a mesh blade as the outer blade, and a slit blade assembly having a slit blade in which a plurality of slits are formed as the outer blade, the object to which the second force is applied by the blade floating portion is the mesh blade assembly.

3. The electric shaver according to claim 2, wherein an initial position of the mesh blade assembly is more protruded with respect to the housing portion than an initial position of the slit blade assembly.

4. The electric shaver according to claim 3, wherein a force applied to the mesh blade assembly is less than a force applied to the slit blade assembly.

5. An electric shaver, wherein the electric shaver is provided with: a main body portion held by a user; a head portion having three or more blade assemblies each having an outer blade and an inner blade disposed on an inner side of the outer blade and sliding with respect to the outer blade; and a head support portion connecting the head portion and the main body portion, the head support portion supports the head portion so as to be able to float and sink with respect to the main body portion, the head portion is provided with: a housing portion supporting the three or more blade assemblies; and a blade floating portion allowing the three or more blade assemblies to respectively float and sink with respect to the housing portion, ​ ​ The head supporting portion applies a first force to the head in a direction of floating that is greater than a second force applied by the blade floating portion to a plurality of blade assemblies less than the three or more blade assemblies in a direction of floating, and less than a third force applied by the blade floating portion to all of the three or more blade assemblies in a direction of floating, The three or more blade assemblies include a mesh blade assembly having a mesh blade as the outer blade, and a slit blade assembly having a slit blade formed with a plurality of slits as the outer blade, The object to which the second force is applied by the blade floating portion is the mesh blade assembly.

6. The electric shaver according to claim 5, wherein The initial position of the mesh blade assembly is more protruded from the housing portion than the initial position of the slit blade assembly.

7. The electric shaver according to claim 6, wherein The force applied to the mesh blade assembly is less than the force applied to the slit blade assembly.

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