Electric shaver

Abstract

The present disclosure provides an electric shaver capable of smoothly detaching a support frame that supports an outer blade and an inner blade that are assembled. The electric shaver (100) of the present disclosure includes a main body (10) to be held by a user, and a head (20) having a blade assembly (30) including an outer blade (slit blade (311), mesh blade (321)) and an inner blade (312, 322) disposed on an inner side of the outer blade and sliding with respect to the outer blade. The head (20) includes a base (27), a support frame (25) that supports the blade assembly (30) so as to be able to float, a housing (21) held to the support frame, a hook portion (26) that latches the support frame (25) or the housing (21) to the base (27), and a push-up member (28) that applies a force to the support frame (25) in a direction away from the base (27).

Description

TECHNICAL FIELD

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

[0002] In the past, in an electric shaver, a main body which is gripped by a user, an outer blade which is detachably attached to the main body, and an inner blade which is disposed on the inner side of the outer blade and slides with respect to the outer blade are provided (see, for example, Patent Document 1). The inner blade is pressed against the outer blade by an elastic body, and the state of pressing the inner blade against the outer blade is maintained at all times during sliding. This pressing force is also applied from the inner blade to the outer blade when the outer blade is detached from the main body, and thus the outer blade can be smoothly detached.

[0003] Prior art documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. H7-299262 SUMMARY

[0006] PROBLEMS TO BE SOLVED BY THE INVENTION

[0007] In recent years, an electric shaver in which the outer blade and the inner blade are assembled and can be supported so as to be able to float and sink with respect to a support frame in the head has also been known. In the case of such an electric shaver, the inner blade is pressed against the outer blade in one assembly. Therefore, when the support frame is detached from the head, the pressing force against the inner blade cannot be applied to the support frame, and thus it is difficult to smoothly detach the support frame.

[0008] Therefore, an object of the present application is to provide an electric shaver in which a support frame that supports an assembled outer blade and inner blade can be smoothly detached.

[0009] MEANS FOR SOLVING THE PROBLEMS

[0010] In order to achieve the above object, an electric shaver according to an aspect of the present application includes a main body portion that is gripped by a user, and a head portion that has a blade assembly including an outer blade and an inner blade disposed on the inner side of the outer blade and sliding with respect to the outer blade, the head portion including a base, a support frame that supports the blade assembly so as to be able to float and sink, a housing portion that covers the support frame, a hook portion that latches the support frame or the housing portion to the base, and a push-up member that presses the support frame in a direction away from the base.

[0011] EFFECTS OF THE INVENTION

[0012] According to the electric shaver of the present application, a support frame that supports an assembled outer blade and inner blade can be smoothly detached. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a perspective view showing the outline structure of an electric shaver of an embodiment.

[0014] Figure 2 is a schematic view showing each floating portion of the head portion and the head support portion of an embodiment.

[0015] Figure 3 is a perspective view of the head portion of an embodiment.

[0016] Figure 4 is a perspective view showing the state after the upper housing portion is removed from the head portion of an embodiment.

[0017] Figure 5 is an exploded perspective view showing the state after the support frame is removed from the base of the head portion of an embodiment.

[0018] Figure 6 is a schematic view showing a pair of groove portions and a pair of protrusions of an embodiment.

[0019] BRIEF DESCRIPTION OF REFERENCE NUMERALS

[0020] 10, main body portion; 11, handle; 12, power switch; 20, head portion; 21, housing portion; 21A, upper housing portion; 21B, lower housing portion; 25, support frame; 26, hook portion; 27, base; 28, push-up member; 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; 60, transmission mechanism; 61, transmission member; 62, 63, 64, link member; 211, button; 251, frame main body; 252, end surface; 253, groove portion; 255, protrusion portion; 256, frame portion; 257, reinforcing portion; 258, engaged portion; 258a, hook; 259, opening portion; 261, claw portion; 271, opening; 274, guide protrusion; 275, cutout; 276, surface; 277, protrusion; 311, slit blade; 312, inner blade; 313, slit; 321, mesh blade; 322, inner blade. DETAILED DESCRIPTION

[0021] 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 mean 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.

[0022] 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.

[0023] (Configuration of the electric shaver)

[0024] Figure 1 is a perspective view showing the 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.

[0025] 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.

[0026] 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 be able 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 (a direction 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.

[0027] The head 20 has a housing portion 21 that constitutes an appearance, a plurality of blade assemblies 30, a blade float portion 40, and a drive source. The drive source is, for example, a linear motor, and is coupled to each of the blade assemblies 30 via a transmission mechanism 60 (refer to Figure 5 ). Thus, power from the drive source is transmitted to each of the blade assemblies 30 via the transmission mechanism 60, and each of the blade assemblies 30 operates.

[0028] The housing portion 21 is a portion that houses the blade float portion 40 and the drive source and supports the plurality of blade assemblies 30. The housing portion 21 has an upper housing portion 21A in which the blade float portion 40 and the plurality of blade assemblies 30 are disposed, and a lower housing portion 21B that houses the drive source. The upper end portions of each of the blade assemblies 30 protrude from the upper surface of the upper housing portion 21A. The housing portion 21 is constituted by combining the upper housing portion 21A and the lower housing portion 21B.

[0029] The plurality of blade assemblies 30 are disposed so that the respective extending directions thereof are parallel to the Y-axis direction. The plurality of blade assemblies 30 include a slit blade assembly 31 and a mesh blade assembly 32. In the present embodiment, the plurality of blade assemblies 30 include two slit blade assemblies 31 and four mesh blade assemblies 32. In the present embodiment, the two slit blade assemblies 31 are disposed at a predetermined interval apart in the X-axis direction. In the present embodiment, one mesh blade assembly 32 is disposed on each of the two sides in the X-axis direction of each of the slit blade assemblies 31. In other words, in the plurality of blade assemblies 30, the mesh blade assembly 32, the slit blade assembly 31, the mesh blade assembly 32, the mesh blade assembly 32, the slit blade assembly 31, and the mesh blade assembly 32 are disposed in this order along the X-axis direction.

[0030] The slit blade assembly 31 is a portion for cutting off long hairs that are difficult to be shaved by the mesh blade assembly 32. The slit blade assembly 31 has a slit blade 311 that is an outer blade, and an inner blade 312. As shown in Figure 1 , a plurality of slits 313 extending in the X-axis direction are formed at both end portions in the X-axis direction on the upper surface of the slit blade 311. The plurality of slits 313 are arranged in the Y-axis direction, and the portions between the slits 313 function as blades. In the slit blade 311, the size in the height direction of the upper opening portion is formed larger than the mesh blade 321 described later, and thus becomes capable of introducing and cutting off hairs that are longer than the hairs that can be introduced by the mesh blade assembly 32.

[0031] As shown in Figure 2As shown, the inner blade 312 is disposed inside the slit blade 311 and is a member that cuts the hair that has entered each slit 313 at the portion between each slit 313 (refer to Figure 1 ) and each other. 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 the transmission mechanism 60 (refer to Figure 5 ). The inner blade 312 reciprocates in the extension direction (the Y-axis direction in the drawing) of the slit blade 311 using the power from the drive source that is transmitted via the transmission mechanism 60 (refer to Figure 5 ). As a result, the hair that has entered each slit 313 is pinched between the portion between each slit 313 and each other and the blade edge of the inner blade 312 and is cut.

[0032] 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 that is 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 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 root.

[0033] The inner blade 322 is disposed inside the mesh blade 321 and is a member that cuts the hair that has entered each hole of the mesh blade 321 at the portion between each hole and each other 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 the transmission mechanism 60 (refer to Figure 5 ). The inner blade 322 reciprocates in the extension direction (the Y-axis direction in the drawing) of the mesh blade 321 using the power from the drive source that is transmitted via the transmission mechanism 60. As a result, the hair that has entered each hole of the mesh blade 321 is pinched between each hole and each other and the blade edge of the inner blade 312 and is cut.

[0034] The blade float portion 40 is a portion that allows each blade assembly 30 to float freely with respect to the housing portion 21. The blade float portion 40 has a plurality of elastic bodies 42, such as springs or rubbers, that apply a force to each blade assembly 30 in a direction in which each blade assembly 30 is to float up from the housing portion 21, that is, a direction in which each blade assembly 30 is to move away from the housing portion 21. Specifically, the elastic bodies 42 are provided with respect to each blade assembly 30, and thus each blade assembly 30 is able to be individually forced. Each elastic body 42 is configured to apply a force to each blade assembly 30 without restricting the movement of the inner blades 312, 322 of each blade assembly 30. The blade float portion 40 maintains each blade assembly 30 in a state in which each blade assembly 30 is to float up to the greatest extent with respect to the housing portion 21 in the absence of an external force. When each blade assembly 30 receives an external force in a direction in which each blade assembly 30 is to sink down toward the housing portion 21, that is, a direction in which each blade assembly 30 is to approach the housing portion 21, each elastic body 42 in the blade float portion 40 contracts, and thus each blade assembly 30 sinks down toward the housing portion 21.

[0035] (Specific configuration of head portion)

[0036] Next, the specific configuration of the head portion 20 will be described in detail. Figure 3 is a perspective view of the head portion 20 according to the embodiment. Figure 4 is a perspective view that shows a state in which the upper housing portion 21A is removed from the head portion 20 according to the embodiment. Figure 5 is an exploded perspective view that shows a state in which the support frame 25 is removed from the base 27 in the head portion 20 according to the embodiment.

[0037] As shown in Figures 3 to 5 , in the head portion 20, a button 211 is provided on each end surface in the Y-axis direction of the lower housing portion 21B. Each button 211 is a portion that causes the hook portion 26, which will be described later, to move by being pressed by a user. In a state in which each button 211 is forced toward the outside of the lower housing portion 21B, each button 211 sinks down toward the inside of the lower housing portion 21B.

[0038] As shown in Figure 5 , the base 27, which holds the support frame 25 so as to be detachable, is provided in the lower housing portion 21B. The base 27 is formed in a rectangular shape when viewed from above, that is, when viewed from the Z-axis direction, and is housed in the lower housing portion 21B. A pair of openings 271 aligned in the X-axis direction is formed in the center portion of the base 27. A transmission member 61, which is a part of the transmission mechanism 60, protrudes from each opening 271. On each transmission member 61, three pin-shaped link members 62, 63, 64 aligned in the X-axis direction are provided, and each pin-shaped link member 62, 63, 64 extends in the Z-axis direction and protrudes from the base 27. That is, each pin-shaped link member 62, 63, 64 extends in a direction that intersects the sliding direction of the inner blades 312, 322, that is, the Y-axis direction.

[0039] The inner blades 322 of the mesh blade assembly 32 are mounted on the two ends of the three connecting members 62, 63, and 64 in the X-axis direction. Additionally, the inner blade 312 of the slit blade assembly 31 is mounted on the connecting member 63 in the central part of the three connecting members 62, 63, and 64 in the X-axis direction. Specifically, mounting holes (not shown) extending in the Z-axis direction are formed on the bottom surface of each inner blade 312, 322. The inner blades 312, 322 are mounted on the pin-shaped connecting members 62, 63, and 64 by inserting each pin-shaped connecting member 62, 63, and 64 from the negative Z-axis direction into the mounting holes of each inner blade 312, 322.

[0040] Additionally, hook portions 26 are provided at both ends of the base 27 in the Y-axis direction. The hook portions 26 are integrally formed with the button 211 of the lower housing portion 21B, and have outwardly protruding claw portions 261 formed at their upper ends. Figures 3 to 5 In the diagram, only the hook portion 26 in the negative Y-axis direction is shown, with its claw portion 261 protruding towards the negative Y-axis direction (i.e., outward). On the other hand, although not shown, the claw portion 261 of the hook portion 26 in the positive Y-axis direction protrudes towards the positive Y-axis direction (i.e., outward). The upper housing portion 21A has a first locking portion (not shown) that engages with the support frame 25 (strictly speaking, a pair of hooks 258a of the protrusion 255 of the support frame 25), and a second locking portion (not shown) that engages with the claw portion 261 of each hook portion 26. The claw portion 261 of each hook portion 26 engages with the second locking portion (not shown) of the upper housing portion 21A, thereby fixing the upper housing portion 21A and the support frame 25 held thereon to the base 27. The protrusion 255 and the pair of hooks 258a will be described later. Furthermore, when the button 211 is pressed by the user, the hook 26 moves inward toward the lower housing portion 21B. As a result, the claw portion 261 of the hook 26 retracts from the second locking portion (not shown) on the upper housing portion 21A, thereby releasing the locking of the upper housing portion 21A and the support frame 25 held thereon. This release allows the upper housing portion 21A and the support frame 25 held thereon to be detached from the base 27. On the other hand, when the user stops pressing the button 211, the button 211 returns to its original position due to the applied force, and therefore the hook 26 also returns to its original position.

[0041] Furthermore, at both ends of the base 27 in the Y-axis direction and at positions closer to the inside of each hook 26 in the Y-axis direction, a pair of guide protrusions 274 protruding upwards (i.e., in the positive Z-axis direction) are provided. Each guide protrusion 274 is a portion that guides the movement of the support frame 25 in the Z-axis direction. Each guide protrusion 274 is formed with a tapered tip. Specifically, each guide protrusion 274 is shaped such that its width in the Y-axis direction and its width in the X-axis direction narrow as it moves in the positive Z-axis direction. In addition, at the center of each guide protrusion 274 in the X-axis direction, a cutout 275 is formed that is open at the end in the positive Z-axis direction and extends along the Y-axis direction. The claw portion 261 of each hook 26 is arranged on the extension line of the cutout 275 in the Y-axis direction.

[0042] In each guide protrusion 274, the inner surface 276 in the Y-axis direction is formed as a plane parallel to the XZ plane. A pair of protrusions 277 extending along the Z-axis direction are formed on this surface 276 with a notch 275 between them. Furthermore, in... Figure 5 Although the surface 276 of the guide protrusion 274 in the negative Y-axis direction is not shown, a pair of protrusions 277 are also formed on this surface 276. These pair of protrusions 277 are the parts that guide the movement of the support frame 25 in the Z-axis direction.

[0043] Furthermore, in the base 27, each corner is provided with an upward-protruding member 28 that protrudes in the positive Z-axis direction when viewed from above (from the Z-axis direction). Each upward-protruding member 28 is a cylindrical member that is freely disposed to protrude into the upper surface of the base 27 along the Z-axis direction. Each upward-protruding member 28 is in a state where a spring member (not shown) located inside the base 27 always applies a force in the positive Z-axis direction. Through this force, each upward-protruding member 28 exerts a force on the support frame 25 in a direction away from the base 27.

[0044] like Figure 4 and Figure 5 As shown, the support frame 25 is a component that can be loaded and unloaded relative to the base 27 while integrally holding the blade floating part 40 and the plurality of blade assemblies 30. Specifically, the support frame 25 has a frame body 251 and a pair of protrusions 255.

[0045] The frame body 251 is the part that holds the blade floating part 40 and allows each blade assembly 30 to move freely in the floating direction. The frame body 251 is rectangular in shape when viewed from above (i.e., from the Z-axis direction). When the support frame 25 is mounted on the base 27, each corner of the frame body 251 abuts against each of the upward pushing members 28 of the base 27, pressing down on each upward pushing member 28. That is, with the support frame 25 mounted on the base 27, each corner of the frame body 251 is continuously subjected to force from each of the upward pushing members 28. Figure 4In the embodiment, the state in which each of the upper pushing members 28 protrudes from each of the corner portions of the frame body 251 is exemplified, but each of the upper pushing members 28 can be housed in the frame body 251 when viewed in the Z-axis direction.

[0046] In addition, a pair of groove portions 253 extending in the Z-axis direction is formed in both end faces 252 in the Y-axis direction of the frame body 251. Further, in Figure 5 In the embodiment, although the end face 252 in the positive direction of the Y-axis is not illustrated, a pair of groove portions 253 is also formed in the end face 252. The pair of groove portions 253 is a portion into which a pair of protrusions 277 formed in a face 276 of the guide protrusion 274 is inserted and guided by the protrusions 277.

[0047] Figure 6 is a schematic view of the pair of groove portions 253 and the pair of protrusions 277 of the embodiment. As Figure 6 indicated, an end portion of each of the groove portions 253 in the negative direction of the Z-axis is open. The open end portion of each of the groove portions 253 has a shape in which the width becomes wider as it advances in the negative direction of the Z-axis. More specifically, an edge on the inner side in the X-axis direction of the open end portion of each of the groove portions 253 is formed along the Z-axis direction, and an edge on the outer side in the X-axis direction is formed in an inclined shape with respect to the Z-axis direction. Since each of the groove portions 253 has such a shape, each of the protrusions 277 can be smoothly inserted into each of the groove portions 253. In addition, since the edge on the inner side in the X-axis direction of the open end portion of each of the groove portions 253 is along the Z-axis direction, the distance of the guide at the time of attachment and detachment can be as long as possible.

[0048] As Figure 4 and Figure 5 indicated, the pair of protruding portions 255 is a portion protruding outward from both end portions in the Y-axis direction of the frame body 251. Further, in Figure 5 In the embodiment, although the end portion of the frame body 251 in the positive direction of the Y-axis is not illustrated, the protruding portion 255 is also provided in the end portion. Each of the protruding portions 255 has a frame-shaped portion 256, a reinforcing portion 257, and a latching portion 258.

[0049] The frame-shaped portion 256 is a frame extending from the end of the frame body 251 in the Y-axis direction with an elongated opening 259 in the X-axis direction. The reinforcing portion 257 connects the central portion of the frame-shaped portion 256 in the X-axis direction to the end of the frame body 251 in the Y-axis direction. This reinforcing portion 257 strengthens the frame-shaped portion 256. Furthermore, a guide protrusion 274 of the base 27 is inserted into the opening 259 formed by the frame-shaped portion 256. As described above, the guide protrusion 274 has a tapered tip, allowing for easy insertion into the opening 259. When the opening 259 faces the base end of the guide protrusion 274, the guide protrusion 274 engages with the opening 259, thereby aligning the support frame 25 in both the X-axis and Y-axis directions. The reinforcing portion 257 is housed in the cutout 275 of the guide protrusion 274 (see reference). Figure 4 ).

[0050] The locking portion 258 is a part that protrudes outward from the center of the frame-shaped portion 256 in the X-axis direction. When viewed from above, the locking portion 258 is U-shaped, with a pair of hooks 258a on both sides of its opening for locking the upper housing portion 21A. When the claw portion 261 locks the upper housing portion 21A through the opening of the locking portion 258, the support frame 25 is fixed to the base 27 while the upper housing portion 21A is locked to the pair of hooks 258a. Thus, because the claw portion 261 locks the upper housing portion 21A, even if the corners of the frame body 251 are subjected to forces from the pushing members 28, the support frame 25 can remain fixed to the base 27.

[0051] (The loading and unloading of the support frame)

[0052] Next, the installation and removal of the support frame 25 will be explained. First, as... Figure 5 The operation of each part during installation from the state of the support frame 25 detached from the base 27 to the base 27 will be explained. First, the user grasps the upper housing portion 21A holding the support frame 25 and approaches the base 27. At this time, the user inserts each guide protrusion 274 into the opening 259 of each frame-shaped portion 256. As a result, the opening 259 faces the base end of the guide protrusion 274, and the reinforcing portion 257 is also accommodated in the cut 275 of the guide protrusion 274. During this movement, the guide protrusion 274 gradually inserts into the opening 259, thereby aligning the support frame 25 in the X-axis direction and the Y-axis direction, respectively. Therefore, the slots 253 of the frame body 251 and the protrusions 277 of the guide protrusions 274 are aligned, or the blade assemblies 30 and the connecting structural members 62, 63, 64 are aligned, or the second locking portion (not shown) and the claw portion 261 of the upper housing portion 21A are aligned.

[0053] Further, when the user presses the support frame 25 toward the base 27, each groove portion 253 is guided by each protrusion 277 of the face 276 of the guide protrusion 274, and the support frame 25 approaches the base 27. Subsequently, each corner portion of the frame body 251 presses each push-up member 28 downward, and the second locking portion (not shown) of the upper housing portion 21A is locked by the claw portion 261 of the hook portion 26. Thus, the upper housing portion 21A and the support frame 25 held to the upper housing portion 21A are fixed to the base 27. As described above, when the fixing is performed, each corner portion of the frame body 251 is always subjected to the force from each push-up member 28. Here, in the case where the claw portion 261 of the hook portion 26 does not lock the second locking portion (not shown) of the upper housing portion 21A, the support frame 25 is held to float from the base 27 by the force of each push-up member 28. Therefore, the user can visually recognize that the support frame 25 is not regularly installed.

[0054] Next, the operation of each portion when the support frame 25 is detached from the base 27 will be described. The user presses each button 211 to cause the hook portion 26 to operate, and the locking of the claw portion 261 of the hook portion 26 to the second locking portion (not shown) of the upper housing portion 21A is released. Thus, the restriction on the entire support frame 25 is released, and therefore the upper housing portion 21A and the support frame 25 held to the upper housing portion 21A are raised by the force of each push-up member 28 and moved in the direction away from the base 27 (i.e., the positive direction of the Z axis). At this time, each groove portion 253 is also guided by each protrusion 277 of the face 276 of the guide protrusion 274, and therefore the support frame 25 is raised while maintaining the state in which each blade assembly 30 and each pin-shaped connecting member 62, 63, 64 are aligned. Therefore, the load on each pin-shaped connecting member 62, 63, 64 is suppressed at the time of detachment. Then, since the support frame 25 is held to float from the base 27, the user holds the upper housing portion 21A and detaches it from the base 27.

[0055] (EFFECTS, ETC.)

[0056] As described above, the electric shaver 100 of the present embodiment includes a main body portion 10 held by a user, and a head portion 20 having a blade assembly 30 including 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. The head portion 20 includes a base 27, a support frame 25 supporting the blade assembly 30 so as to float and sink, an upper housing portion 21A held to the support frame 25, a hook portion 26 locking the support frame 25 to the base 27, and a push-up member 28 applying a force to the support frame 25 in a direction away from the base 27.

[0057] Thus, the blade assembly 30 is supported by the support frame 25 that is pushed upward by the urging member 28 in a direction away from the base 27, and thus if the hook portion 26 is released, the support frame 25 is moved away from the base 27 by the force received from the urging member 28. Thus, the support frame 25 that supports the blade assembly 30 and the upper housing portion 21A held by the support frame 25 can be smoothly removed.

[0058] On the other hand, it is also assumed that the claw portion 261 of the hook portion 26 does not accurately engage the second engaging portion (not shown) of the upper housing portion 21A when the support frame 25 is installed. In this case, the support frame 25 is held floating from the base 27 by the force of each urging member 28, and thus the user can recognize that the support frame 25 and the upper housing portion 21A are not properly installed.

[0059] In addition, the head 20 is provided with link members 62, 63, 64 that link the inner blades 312, 322 to transmit power from the motor to the inner blades 312, 322, and the link members 62, 63, 64 extend in a direction intersecting the sliding direction of the inner blades 312, 322 and protrude from the base 27.

[0060] Thus, in the electric shaver 100 having the link members 62, 63, 64 that link the inner blades 312, 322 in a state protruding from the base 27, the support frame 25 can also be smoothly removed.

[0061] In addition, the urging member 28 applies a force to the support frame 25 in the extension direction of the link members 62, 63, 64.

[0062] Thus, the urging member 28 applies a force to the support frame 25 in the extension direction of the link members 62, 63, 64, and thus when the support frame 25 is moved away from the base 27 by the force, the support frame 25 is smoothly moved along the link members 62, 63, 64. Thus, the load on the link members 62, 63, 64 can be suppressed.

[0063] In addition, the support frame 25 has a frame body 251 that holds the blade assembly 30 and has a rectangular shape in plan view. The urging member 28 is provided at a position corresponding to each corner portion of the frame body 251 in plan view.

[0064] Thus, the urging member 28 is provided at a position corresponding to each corner portion of the frame body 251, and thus the urging member 28 can apply a force to the support frame 25 uniformly. Thus, the support frame 25 can be stably moved in a direction away from the base 27.

[0065] In addition, the support frame 25 is formed with a groove portion 253 extending in the force application direction of the push-up member 28, and the base 27 is formed with a protrusion 277 guided by the groove portion 253.

[0066] Thus, when the support frame 25 is attached to or detached from the base 27, the groove portion 253 is guided by the protrusion 277, so that the support frame 25 can be smoothly moved. Thus, the load of the support frame 25 at the time of attachment or detachment can be suppressed.

[0067] (Other)

[0068] The above describes the electric shaver according to the present application based on the above-described embodiment, but the present application is not limited to the above-described embodiment.

[0069] For example, in the above-described embodiment, the case where each link member 62, 63, 64 is a pin shape is exemplified. However, each link member 62, 63, 64 can be a prismatic shape. In addition, each link member 62, 63, 64 can be integrally formed with respect to the transmission member 61, or can be formed by separately forming each link member 62, 63, 64 and fixing it to the transmission member 61.

[0070] In addition, in the above-described embodiment, the case where the number of protrusions 277 provided on the inner face 276 in the Y-axis direction of each guide protrusion 274 is two is exemplified. However, the number of protrusions 277 of each guide protrusion 274 can be one or more than three.

[0071] In addition, in the above-described embodiment, the case where each push-up member 28 is a cylindrical member is shown. However, each push-up member 28 can be a prismatic shape other than a cylinder, a circular truncated cone, a prismatic truncated cone, or the like. In addition, each push-up member 28 can be individually different in shape. Regardless of the shape of the push-up member 28, it is preferable that the shape be such that the frame body 251 can be pushed up.

[0072] In addition, in the above-described embodiment, the case where the frame body 251 is rectangular in plan view is exemplified. However, the frame body 251 can be a polygonal shape other than a rectangle. Regardless of the polygonal shape of the frame body 251, it is preferable that the push-up member 28 be provided at a position corresponding to a corner of the frame body 251.

[0073] In addition, the position of the push-up member 28 can be a position to push up a straight line portion of the rectangular frame body 251.

[0074] Further, in the above-described embodiment, the case where the support frame 25 is formed with the groove portion 253 extending along the force application direction of the push-up member 28, and the base 27 is formed with the protrusion 277 guided by the groove portion 253 is exemplified. However, the base 27 can be formed with the groove portion 253 extending along the force application direction of the push-up member 28, and the support frame 25 can be formed with the protrusion 277 guided by the groove portion 253.

[0075] Further, the number of the groove portions 253 extending along the force application direction of the push-up member 28 can also be not two, but one or three or more, in the same number as the protrusions 277.

[0076] In the above-described embodiment, the case where one push-up member 28 is provided at each of the four corners of the frame body 251 in total four, corresponding to the shape of the frame body 251 is exemplified. However, the number of the push-up members 28 is not limited to one at each corner, and a plurality of push-up members can be provided at one corner.

[0077] Further, in the above-described embodiment, the case where the hook portion 26 is hooked to the second hooking portion (not shown) provided in the upper housing portion 21A is exemplified. However, the hook portion 26 can be hooked to the support frame 25.

[0078] 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 the scope of the gist of the present application are also included in the present application.

[0079] Industrial Applicability

[0080] 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 for shaving.

Claims

1. An electric shaver, wherein, The electric shaver has the following features: The main body, which is held by the user; and The head has a blade assembly having an outer blade and an inner blade disposed inside the outer blade and sliding relative to the outer blade. The head has: abutment; A support frame that supports the blade assembly for easy floating; and At least one upward pushing member applies a force to the support frame in a direction away from the base. The head also has: The upper housing portion is held in place by the support frame; The lower housing portion, which is provided with the base platform; and The hook portion secures the support frame or the upper housing portion to the base. The support frame or the upper housing portion is secured by the hook, thereby maintaining the support frame fixed to the base even if the at least one pushing member applies force to the support frame in a direction away from the base.

2. The electric shaver according to claim 1, wherein, The head is provided with a connecting member that is connected to the inner blade for transmitting power from the electric motor to the inner blade. The connecting member extends in a direction intersecting the sliding direction of the inner blade and protrudes from the base.

3. The electric shaver according to claim 2, wherein, The pushing member applies a force to the support frame along the extension direction of the connecting member.

4. The electric shaver according to any one of claims 1 to 3, wherein, The at least one upward pushing member has two or more upward pushing members. The support frame has a frame body that maintains the blade assembly in a rectangular shape when viewed from above. The two or more upward pushing members are positioned at positions corresponding to the corners of the frame body when viewed from above.

5. The electric shaver according to any one of claims 1 to 3, wherein, A groove is formed in the base that extends along the direction of force application of the pushing member. The support frame has protrusions guided by the groove.

6. The electric shaver according to any one of claims 1 to 3, wherein, A groove is formed in the support frame that extends along the direction of force application of the pushing member. The base has protrusions guided by the groove.

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