Clipper blades and clippers

Abstract

To provide a blade of a hair clipper which can set a shorter clipping height while reducing stimulation caused to skin during use, and to provide the hair clipper.SOLUTION: A blade 45 of a hair clipper includes: a fixed blade 47; and a movable blade 46 which can slide in a reciprocating manner along one direction relative to the fixed blade 47 to cut hairs. Further, the fixed blade 47 includes: a sliding contact surface P2 with which the movable blade 46 may slidably contact; and a skin contact surface P3 with which skin may contact. In a state that the fixed blade 47 is viewed along the one direction, the sliding contact surface P2 is inclined with respect to the skin contact surface P3 such that a distance between the sliding contact surface P2 and the skin contact surface P3 is decreased toward a tip side, and the movable blade 46 is configured to be slidable on the sliding contact surface P2 of the fixed blade 47 in an intersecting direction intersecting with the one direction. A tip part 473 of the fixed blade 47 has a uniform part 4731 having a uniform thickness as seen in a thickness direction intersecting the one direction and the intersecting direction.SELECTED DRAWING: Figure 19

Description

[Technical Field]

[0001] The present disclosure relates to clipper blades and clippers. [Background technology]

[0002] Conventionally, as disclosed in Patent Document 1 below, a hair clipper has been proposed that includes a fixed blade and a movable blade, and cuts hair by sliding the movable blade back and forth relative to the fixed blade.

[0003] In Patent Document 1, the mowing height can be adjusted by sliding the movable blade relative to the fixed blade in a direction intersecting the reciprocating sliding motion. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 5-317537 Summary of the Invention [Problem to be solved by the invention]

[0005] In such clippers with adjustable cutting height, it is preferable to provide blades that allow the cutting height to be set shorter.

[0006] It is also preferable that even if the cutting height is reduced, the irritation to the skin during use can be reduced.

[0007] Therefore, an object of the present disclosure is to provide hair clipper blades and hair clippers that can be set to a shorter cutting height while further reducing irritation to the skin during use. [Means for solving the problem]

[0008] The blades of a hair clipper according to one aspect of the present disclosure comprise a fixed blade and a movable blade capable of cutting hair by sliding back and forth along one direction against the fixed blade, the fixed blade having a sliding surface against which the movable blade can slide and a skin contact surface against which the skin can come into contact, and when the fixed blade is viewed along the one direction, the skin contact surface is inclined relative to the sliding surface so that the distance toward the tip becomes shorter, the movable blade is configured to be able to slide on the sliding surface of the fixed blade in a transverse direction that intersects the one direction, and the tip of the fixed blade has a uniform portion where the thickness is uniform in the one direction and in a thickness direction that intersects the transverse direction.

[0009] A hair clipper according to one aspect of the present disclosure includes the above-described hair clipper blade. [Effects of the Invention]

[0010] According to the present disclosure, it is possible to obtain hair clipper blades and hair clippers that can be set to a shorter cutting height while further reducing irritation to the skin during use. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a front view showing an example of a hair clipper according to an embodiment; [Figure 2] 1 is a side view showing an example of a hair clipper according to an embodiment; [Figure 3] 2 is a cross-sectional view taken along the line AA in FIG. 1. [Figure 4] 1 is a perspective view showing an example of a blade block included in a hair clipper according to an embodiment; [Figure 5] 1 is a plan view showing an example of a blade block included in a hair clipper according to an embodiment of the present invention; [Figure 6] 1 is a rear view showing an example of a blade block provided in the hair clipper according to the embodiment; FIG. [Figure 7] 1 is a side view showing an example of a blade block provided in a hair clipper according to an embodiment. FIG. [Figure 8]1 is an exploded perspective view showing an example of a blade block included in a hair clipper according to an embodiment. FIG. [Figure 9] 1 is a cross-sectional view showing an example of a cutting height adjustment mechanism provided in the hair clippers according to the embodiment, in which the cutting height is set to the maximum. FIG. [Figure 10] 1 is a cross-sectional view showing an example of a cutting height adjustment mechanism provided in the hair clippers according to the embodiment, in which the cutting height is set to the minimum. FIG. [Figure 11] 1 is a diagram showing an example of a cutting height adjustment mechanism provided in the hair clippers according to the embodiment, and is a perspective view showing the state where the cutting height is set to the maximum from the inside. FIG. [Figure 12] FIG. 10 is a diagram showing an example of a cutting height adjustment mechanism provided in the hair clippers according to the embodiment, and is a perspective view showing the state in which the cutting height is set to the minimum from the inside. [Figure 13] FIG. 2 is a perspective view of an example of a fixed blade provided in a blade block according to an embodiment, seen from the back side. [Figure 14] FIG. 2 is a side view showing an example of a fixed blade included in the blade block according to the embodiment. [Figure 15] FIG. 10 is a perspective view illustrating the positional relationship between the movable blade and the fixed blade when the maximum cutting height is set. [Figure 16] FIG. 10 is a side view illustrating the positional relationship between the movable blade and the fixed blade when the maximum cutting height is set. [Figure 17] FIG. 10 is a perspective view illustrating the positional relationship between the movable blade and the fixed blade when the minimum cutting height is set. [Figure 18] FIG. 10 is a side view illustrating the positional relationship between the movable blade and the fixed blade when the minimum cutting height is set. [Figure 19] 3 is an enlarged side view showing a tip portion of a fixed blade included in the blade block according to the embodiment. FIG. [Figure 20] FIG. 4 is an enlarged rear view showing a fixed blade crosspiece and a fixed blade groove of the fixed blade according to the embodiment. [Figure 21] FIG. 10 is an enlarged side view showing a tip portion of a fixed blade included in a blade block according to a first modified example. [Figure 22]FIG. 10 is a side view showing a fixed blade provided in a blade block according to a second modified example. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, embodiments will be described in detail with reference to the drawings. However, unnecessary detailed description may be omitted. For example, detailed description of already well-known matters or redundant description of substantially the same configuration may be omitted.

[0013] The accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0014] In the following embodiments and their modifications, the direction in which the movable blade reciprocates relative to the fixed blade will be described as the width direction Y. Furthermore, the direction in which the movable blade slides relative to the fixed blade will be described as the front-rear direction X. The up-down direction when the movable blade is positioned below the fixed blade and the sliding surface of the fixed blade is horizontal will be described as the up-down direction Z.

[0015] Therefore, in the following embodiment and its modified examples, the width direction Y, which is the direction in which the movable blade reciprocates relative to the fixed blade, corresponds to one direction, and the front-rear direction X, which is the direction in which the movable blade slides relative to the fixed blade, corresponds to an intersecting direction that intersects (is perpendicular to) the one direction. This intersecting direction is a direction perpendicular to the one direction and forms a sliding surface between the movable blade and the fixed blade together with the one direction. The up-down direction Z corresponds to the thickness direction, which is a direction that intersects (is perpendicular to) the one direction and the intersecting direction.

[0016] In the following description of the embodiment and its modified examples of the hair clipper, the side on which the switch is provided is defined as the front.

[0017] (Embodiment) 1 and 2, hair clippers 10 according to this embodiment include a main body 11 and a blade block 40 that is detachably attached to main body 11. In this embodiment, main body 11 has an elongated shape, and is formed with a grip portion (handholding portion) 11a that can be held by hand.

[0018] The hair clippers 10 are devices for treating and styling a user's hair, for example, by cutting the user's hair to a desired length. Specifically, the blade block 40 includes a metal fixed blade 47 and a metal movable blade 46 that slides back and forth in the width direction (sliding direction) Y relative to the fixed blade 47. The blade block 40 is attached to the main body 11, and the electric motor 14 housed in the main body 11 is used as a drive source to slide the movable blade 46 back and forth in the width direction Y relative to the fixed blade 47, thereby sandwiching and cutting the hair between the fixed blade 47 and the movable blade 46.

[0019] In this embodiment, the main body 11 includes a housing 12 that forms a generally S-shaped outer shell in a side view. The housing 12 can be made of a material such as synthetic resin, and an operation switch 12a is attached to the front of the housing 12 so that it can be pushed inward while being exposed to the outside.

[0020] In this embodiment, the housing 12 is formed by joining multiple segments together, forming a cavity inside the housing 12. Various electrical components are accommodated in this cavity. The multiple segments can be joined together by, for example, using screws or by fitting the segments together.

[0021] In this embodiment, a rechargeable battery 13 and an electric motor 14 driven by the rechargeable battery 13 are housed in a cavity formed inside the housing 12. Also housed in the cavity formed inside the housing 12 are a power transmission mechanism 15 that transmits the rotational driving force of the electric motor 14 to the blade block 40 and an eccentric shaft 16 that is eccentrically rotated by the power transmission mechanism 15. In this embodiment, as shown in FIG. 3, the eccentric shaft 16 is housed in the cavity inside the housing 12 with its tip protruding toward the blade block 40 (upper side in FIG. 3), and is connected to a guide plate 42 of the blade block 40, which will be described later. It is also possible to supply power from an external source using a power cord or the like. The method of driving the blade block 40 is not limited to the above-described method, and various other methods are possible.

[0022] Furthermore, a cavity formed inside the housing 12 accommodates a control unit 17 and other components that control the power supply to the electric motor 14 in response to the depression of an operation switch 12a exposed to the outside.

[0023] The blade block 40 has a function of cutting hair, and includes a blade portion (hair clipper blade) 45 formed by arranging a movable blade 46 and a fixed blade 47 facing each other, as shown in Figures 4 to 7. The blade portion 45 is configured so that a movable blade crosspiece 462 (described later) of the movable blade 46 slides back and forth in the width direction Y relative to a fixed blade crosspiece 472 (described later) of the fixed blade 47.

[0024] 8, the blade block 40 further includes a resin fixed plate 41 on which the blade portion 45 is disposed, and a resin guide plate 42 fixed to the movable blade 46. The blade block 40 also includes a metal push-up spring 43 that presses the movable blade 46 toward the fixed blade 47, and a resin switching lever 44 that holds the push-up spring 43. In this embodiment, the switching lever 44 is held by the fixed plate 41 in a state that allows it to rotate relatively to the fixed plate 41, and can be tilted between a tilted position shown in FIG. 9 and an upright position shown in FIG. 10.

[0025] The fixed plate 41 is a member fixed to the main body 11 with the fixed blade 47 fixed thereto, and includes a hook portion 41a for engaging with the main body 11, an insertion groove 41b for inserting and holding the insertion protrusion 4711 of the fixed blade 47, and a holding groove 41c that opens upward. A cylindrical portion 44a of the switching lever 44, which will be described later, is inserted and held in this holding groove 41c in a state where it can rotate relatively to the fixed plate 41.

[0026] The guide plate 42 is a member that is connected to the eccentric shaft 16 with the blade block 40 attached to the main body 11 and that reciprocates in the width direction Y, and the movable blade 46 is fixed to this guide plate 42. In this embodiment, the guide plate 42 has a hook portion 42a with which the movable blade 46 engages, and the movable blade 46 is fixed to the guide plate 42 by this hook portion 42a and heat sealing. Then, in conjunction with the reciprocating movement of the guide plate 42 in the width direction Y, the movable blade 46 slides back and forth in the width direction Y relative to the fixed blade 47.

[0027] The push-up spring 43 is a member for pressing the movable blade 46 toward the fixed blade 47 to more reliably bring the movable blade crosspiece 462 and the fixed blade crosspiece 472, which will be described later, into sliding contact with each other, and can be formed of, for example, a torsion spring. In this embodiment, the push-up spring 43 includes a pair of coil portions 43a held by the switching lever 44, and a connecting portion 43b held by the switching lever 44 and connecting the pair of coil portions 43a. The push-up spring 43 also includes an arm portion 43c connected to the side of each coil portion 43a opposite to the connecting portion 43b side, and fixed to the movable blade 46 to press the movable blade 46 toward the fixed blade 47.

[0028] In this embodiment, an attachment (not shown) can be attached to the blade block 40, and by attaching the attachment, it is possible to change the cutting height of the hair clippers 10. In this embodiment, as shown in Figure 6, an attachment opening 41d for attaching an attachment is provided on the back side of the fixing plate 41.

[0029] Furthermore, with the hair clippers 10 according to this embodiment, the hair cutting height can be changed without using an attachment, and the main body 11 is provided with a cutting height adjustment mechanism 20. By operating the cutting height adjustment mechanism 20, the switching lever 44 is raised and lowered, and by raising and lowering the switching lever 44, the hair cutting height can be changed.

[0030] In this embodiment, the switching lever 44 has a cylindrical portion 44a that is inserted and held in a holding groove 41c of the fixed plate 41 in a state where it can rotate relatively to the fixed plate 41. The switching lever 44 also has an accommodating recess 44b that fits and houses the coil portion 43a of the boost spring 43, and an accommodating recess 44c that houses the connecting portion of the boost spring 43. The switching lever 44 also has a protrusion 44d that is operated by the transmission mechanism 22. The switching lever 44 is held by the fixed plate 41 in a state where it is biased by the boost spring 43 toward the lying-down position.

[0031] On the other hand, as shown in FIGS. 9 to 12, the cutting height adjustment mechanism 20 includes a cutting height adjustment dial 21 rotatably attached to the main body 11, and a transmission mechanism 22 that raises or lowers the switching lever 44 of the blade block 40 in conjunction with the rotation of the dial 21. In this embodiment, the cutting height adjustment dial 21 is provided closer to the blade block 40 (upper side in FIG. 1) than the operation switch 12a on the front side of the housing 12 so as to be rotatable relative to the housing 12. In this state, the dial 21 can be rotated relative to the housing 12 about a rotation axis C1 that extends in the left-right direction (horizontal direction) in the state shown in FIG. 9. The transmission mechanism 22 is housed in a cavity formed inside the housing 12, and includes a first conversion mechanism 221 and a second conversion mechanism 222.

[0032] Here, the first conversion mechanism 221 is a mechanism that converts the rotation (reciprocating rotational motion) of the dial 21 about the rotation axis C1 into reciprocating linear motion in the radial direction of the dial 21 (the up and down direction in the state shown in FIG. 9), and is provided with a groove 2211. As shown in FIGS. 11 and 12, this groove 2211 is formed on the inside of the dial 21, and has a curved shape such that the distance from the rotation axis C1 decreases from one end 2211a to the other end 2211b.

[0033] The first conversion mechanism 221 also includes a rod 2212 having a pin 22121 movably inserted into the groove 2211, and a slider 2213 provided at the tip of the rod 2212. When the dial 21 is rotated, the pin 22121 moves within the groove 2211 in conjunction with the rotation of the dial 21. In this way, the rod 2212 and the slider 2213 perform linear reciprocating motion in the radial direction of the dial 21 (the up and down direction in the state shown in FIG. 9 ) in conjunction with the movement of the pin 22121 within the groove 2211.

[0034] On the other hand, the second conversion mechanism 222 is a mechanism that converts the reciprocating linear motion converted by the first conversion mechanism 221 into a rotation (reciprocating rotational motion) about a rotation axis extending in the width direction (one direction) Y, and is provided with an operating shaft 2221. This operating shaft 2221 is attached to a hook portion 22131 provided on the slider 2213 in a state in which it extends in the width direction (one direction) Y, and performs a reciprocating linear motion together with the slider 2213 in the radial direction of the dial 21 (the up and down direction in the state shown in FIG. 9).

[0035] Furthermore, the second conversion mechanism 222 includes a rotating member 2222 having one end connected to the operating shaft 2221, and a rotating shaft 2223 extending in the width direction (one direction) Y and to which the rotating member 2222 is rotatably attached. In this embodiment, the pair of rotating members 2222 are connected to both ends of the operating shaft 2221 in the width direction (one direction) Y. The second conversion mechanism 222 also includes an acting member 2224 connected to the other end of the rotating member 2222 and operating to raise or lower the switching lever 44, and a connecting shaft 2225 extending in the width direction (one direction) Y and connecting the rotating member 2222 and the acting member 2224.

[0036] When the operating shaft 2221 is caused to make a linear reciprocating motion in the radial direction of the dial 21 (the up and down direction in the state shown in FIG. 9), the rotating member 2222 rotates about the rotating shaft 2223 in conjunction with the linear reciprocating motion of the operating shaft 2221. In this way, the acting member 2224 connected to the rotating member 2222 via the connecting shaft 2225 rotates in conjunction with the other end of the rotating member 2222, and the rotation of this acting member 2224 causes the switching lever 44 to be raised or lowered.

[0037] In this embodiment, when the dial 21 is rotated in the forward direction, the slider 2213 and the operating shaft 2221 move linearly downward in the states shown in FIGS. 9 and 10 . As the operating shaft 2221 moves downward, the rotating member 2222 rotates around the rotating shaft 2223. At this time, the rotating member 2222 rotates such that one end connected to the operating shaft 2221 moves downward and the other end connected to the acting member 2224 moves upward. Furthermore, the acting member 2224 moves upward as the other end of the rotating member 2222 moves upward. By moving the acting member 2224 upward, the switching lever 44 rotates toward the upright position against the biasing force of the push-up spring 43. In this way, the movable blade 46 slides toward the tip side (forward in the front-rear direction X) while being pressed against the fixed blade 47 via the push-up spring 43 and the guide plate 42.

[0038] On the other hand, when the dial 21 is rotated in the reverse direction, the slider 2213 and the operating shaft 2221 move linearly upward as shown in FIGS. 9 and 10 . As the operating shaft 2221 moves upward, the rotating member 2222 rotates about the rotating shaft 2223. At this time, the rotating member 2222 rotates such that one end connected to the operating shaft 2221 moves upward and the other end connected to the acting member 2224 moves downward. Furthermore, the acting member 2224 moves downward as the other end of the rotating member 2222 moves downward. As the acting member 2224 moves downward, the biasing force of the push-up spring 43 rotates the switching lever 44 to the lying position. In this way, the movable blade 46 slides toward the base side (rearward in the front-rear direction X) while being pressed against the fixed blade 47 via the push-up spring 43 and the guide plate 42.

[0039] In this manner, in this embodiment, when the dial 21 is rotated in the forward direction, the movable blade 46 slides toward the tip side of the fixed blade 47, and when the dial 21 is rotated in the reverse direction, the movable blade 46 slides toward the base side of the fixed blade 47. Note that in this embodiment, rotating the dial 21 counterclockwise in the state shown in Fig. 1 is expressed as rotating the dial 21 in the forward direction, and rotating the dial 21 clockwise in the state shown in Fig. 1 is expressed as rotating the dial 21 in the reverse direction.

[0040] At this time, the movable blade 46 slides on a tapered portion 4721 (described later) of the fixed blade 47. That is, in this embodiment, the movable blade 46 slides between the root side and the tip side on the tapered portion 4721 of the fixed blade 47. In this way, the hair cutting height can be changed.

[0041] In this embodiment, when the dial 21 is rotated in the forward direction to rotate the switching lever 44 a predetermined amount from the initial position toward the upright position, the protrusion 44d comes into contact with the hook portion 41a of the fixed plate 41, thereby restricting further upward movement of the switching lever 44. That is, the protrusion 44d comes into contact with the hook portion 41a of the fixed plate 41, restricting further upward movement of the switching lever 44, thereby restricting sliding of the movable blade 46 toward the tip end. In this embodiment, when the switching lever 44 is in the initial position, the movable blade 46 is positioned at the base end of the fixed blade 47 (the highest cutting height). When the protrusion 44d restricts the upward movement of the switching lever 44, the movable blade 46 is positioned at the tip end of the fixed blade 47 (the shortest cutting height).

[0042] The movable blade 46 also has a main body 461, a plurality of movable blade bars 462 arranged side by side in the width direction Y at one end side (the front side in the front-to-rear direction X) of the main body 461, and a plurality of movable blade grooves 463 formed between adjacent movable blade bars 462.

[0043] The movable blade crosspiece 462 is formed to protrude forward in the front-rear direction X from the main body 461, and includes a base portion 4621 connected to the main body 461. The movable blade crosspiece 462 also includes a bent portion 4622 connected to the base portion 4621 and bent so that its tip side faces the fixed blade 47, and a cutting portion 4623 connected to the bent portion 4622 and capable of cutting hair. Therefore, in this embodiment, the surface of the cutting portion 4623 facing the fixed blade 47 serves as the sliding surface P1 of the movable blade 46.

[0044] In addition, edges 46231 are formed on both sides of the cutting portion 4623 in the width direction Y, and these edges 46231 enable hair to be cut more reliably.

[0045] 15 and 16, the surface of the tip 4624 of the movable blade bar 462 opposite to the sliding contact surface P1 is rounded. That is, a curved portion 46241 is formed on the surface of the tip 4624 of the movable blade bar 462 opposite to the sliding contact surface P1. This reduces the irritation that the blade portion 45 gives to the skin when the movable blade 46 is used with the side of the movable blade 46 against the skin.

[0046] On the other hand, the fixed blade 47 comprises a main body 471, a plurality of fixed blade bars 472 arranged side by side in the width direction Y at one end side (front side in the front-to-rear direction X) of this main body 471, and a plurality of fixed blade grooves 474 formed between adjacent fixed blade bars 472.

[0047] 13 and 14, each fixed blade crosspiece 472 has a tapered portion 4721 that tapers toward the tip end (the front side in the front-rear direction X). In this embodiment, the fixed blade 47 has a sliding contact surface P2 against which the movable blade 46 can slide and a skin contact surface P3 that can come into contact with the skin. In a side view of the fixed blade crosspiece 472 (when the fixed blade 47 is viewed along the width direction Y), the skin contact surface P3 is inclined relative to the sliding contact surface P2 so that the distance to the tip end (the front side in the front-rear direction X) becomes shorter. In this way, the fixed blade crosspiece 472 has a tapered portion 4721 in which the thickness T1 gradually decreases from the base end toward the tip end.

[0048] The movable blade 46 is slid in the front-to-rear direction X on the sliding contact surface P2 of the tapered portion 4721. That is, the sliding range of the movable blade 46 is set on the sliding contact surface P2 of the tapered portion 4721. Specifically, as shown in FIGS. 15 and 16 , when the movable blade 46 is positioned at the base end of the fixed blade 47 (when the cutting height is at its highest), the sliding contact surface P1 of the movable blade 46 comes into contact with the sliding contact surface P2 of the tapered portion 4721. As shown in FIGS. 17 and 18 , even when the movable blade 46 is positioned at the tip end of the fixed blade 47 (when the cutting height is at its shortest), the sliding contact surface P1 of the movable blade 46 comes into contact with the sliding contact surface P2 of the tapered portion 4721.

[0049] In this embodiment, the tapered portion 4721 is formed so that the cutting height is 1.5 mm when the movable blade 46 is positioned closest to the base of the fixed blade 47, and 0.3 mm when the movable blade 46 is positioned closest to the tip of the fixed blade 47. The cutting height can be changed in stages to 1.5 mm, 1.2 mm, 0.9 mm, 0.6 mm, and 0.3 mm. In other words, by operating the cutting height adjustment dial 21, the cutting height can be set in multiple stages between 1.5 mm and 0.3 mm.

[0050] In this embodiment, the cutting height adjustment mechanism 20 is provided with a holding mechanism 23 that can hold the dial 21 in stages. By holding the dial 21 in stages with the holding mechanism 23, the cutting height can be changed in stages.

[0051] Specifically, the holding mechanism 23 includes a holding spring 231 fixed to the main body 11 and an engaged portion 232 formed on the back side of the dial 21 and capable of engaging with the holding spring 231. In this embodiment, the dial 21 is configured to be rotatable relative to the holding spring 231, and the engaged portion 232 formed on the back side of the dial 21 is also configured to be rotatable relative to the holding spring 231. When the dial 21 is rotated and the relative positions of the holding spring 231 and the engaged portion 232 reach a predetermined position, the holding spring 231 and the engaged portion 232 are releasably engaged with each other, thereby restricting rotation of the dial 21 in both the forward and reverse directions.

[0052] Specifically, the engaged portion 232 is formed to have a shape that includes an arc centered on the rotation axis C1. Five engaging recesses 2321 that are recessed toward the rotation axis C1 are formed at equal intervals along the circumferential direction on the circumferential surface of the engaged portion 232. Meanwhile, the holding spring 231 is formed with engaging protrusions 2311 that protrude toward the circumferential surface of the engaged portion 232 and engage with the engaging recesses 2321 of the engaged portion 232.

[0053] In this manner, in this embodiment, the positions of the retaining spring 231 and the engaged portion 232 when any one of the five engaging recesses 2321 is opposed to the engaging protrusion 2311 are the predetermined positions described above.

[0054] It is also possible to make the cutting height continuously adjustable between 1.5 mm and 0.3 mm. The upper and lower limits of the cutting height can also be set as appropriate. Furthermore, if the cutting height is changed in stages, any number of stages, at least two, is acceptable; it does not have to be five stages.

[0055] Furthermore, the above-described cutting height adjustment mechanism 20 is merely one example, and other conventionally known cutting height adjustment mechanisms can also be used as long as they are configured to allow the movable blade 46 to slide in the forward / backward direction X relative to the fixed blade 47 in response to user operation.

[0056] By using the blade block 40 described above, it becomes possible to cut hair as short as 0.3 mm. In this way, when the hair cutting height can be set shorter, if the fixed blade crosspiece 472 of the fixed blade 47 simply has a tapered portion 4721, the tip of the tapered portion 4721 may come into contact with the skin (scalp) when using the hair clippers 10, causing severe irritation to the skin (scalp).

[0057] Therefore, in this embodiment, even if the cutting height can be set shorter, it is possible to further reduce irritation to the skin (scalp) during use. Specifically, as shown in Fig. 19, fixed blade crosspiece 472 has tip portion 473 at one end side (front side in the front-rear direction X) of tapered portion 4721. Tip portion 473 has uniform portion 4731 whose thickness is uniform in the up-down direction Z (thickness direction intersecting with width direction Y and front-rear direction X).

[0058] This makes it possible to further reduce irritation to the skin (scalp) during use.

[0059] In this embodiment, the entire tip 473 is configured to have a uniform portion 4731 with a uniform thickness in the vertical direction Z. At this time, the thickness T2 of the uniform portion 4731 in the vertical direction Z is set to about 0.35 mm, taking into consideration the fact that the tip 473 is digging into the skin (scalp) during use. This makes it possible to achieve an actual cut as short as 0.3 mm.

[0060] Furthermore, in this embodiment, the uniform portion 4731 is formed so as to protrude toward the skin contact surface P3 (the side of at least one of the sliding contact surface P2 and the skin contact surface P3). That is, the uniform portion 4731 is formed so as to protrude toward only the skin contact surface P3 side of the sliding contact surface P2 and the skin contact surface P3.

[0061] This allows the sliding surface P2 to be a flat surface, and prevents the movable blade 46 from interfering with the uniform portion 4731 when sliding the movable blade 46 on the sliding surface P2.

[0062] Furthermore, by making the skin contact surface P3 side of the uniform portion 4731 protrude, when fixed blade 47 is brought into contact with a curved surface such as the head, the protruding portion can be brought into contact with the head, thereby preventing skin contact surface P3 from tilting from the appropriate position relative to the head. In other words, when used on an uneven surface such as the head, fixed blade 47 can be more reliably maintained in the appropriate position. As a result, hair and other hair can be more reliably cut to the set length.

[0063] Furthermore, in this embodiment, a curved portion 4731a is formed at the tip of fixed blade 47. Specifically, curved portion 4731a that is convex toward the tip and upward is formed at the upper part of the tip of uniform portion 4731, thereby forming curved portion 4731a at the tip of fixed blade 47. In other words, in this embodiment, fixed blade 47 is formed so that its tip becomes uniform portion 4731, and skin contact surface P4 and tip surface P5 of uniform portion 4731 are connected by curved portion 4731a that is R-shaped.

[0064] This allows the curved portion 4731a to be in contact with the skin during use, thereby more reliably reducing irritation to the skin during use.

[0065] The radius of curvature of such curved portion 4731a is preferably about half the thickness T2 in the up-down direction Z of uniform portion 4731. This makes the boundary between uniform portion 4731 and curved portion 4731a smooth, making it possible to prevent edges from being formed in uniform portion 4731. As a result, it is possible to further reduce irritation to the skin (scalp) during use.

[0066] Furthermore, in this embodiment, the length L2 of the uniform portion 4731 in the width direction Y is set to be greater than the thickness T2 of the uniform portion 4731 in the up-down direction Z.

[0067] By doing so, even when curved portion 4731a is provided at the tip of uniform portion 4731, uniform portion 4731 has a straight portion (flat portion).

[0068] In this embodiment, the length L2 of the uniform portion 4731 in the front-rear direction X is set to about 0.4 mm.

[0069] In this embodiment, as shown in FIG. 20, the fixed blade groove 474 of the fixed blade 47 has a width W2 in the width direction Y that differs between the tip side 474a and the rear side 474b in the front-rear direction X.

[0070] Specifically, the width W2 of the fixed blade groove 474 in the width direction Y gradually narrows from the tip end 474a to the rear end 474b. In this embodiment, the width W2 of the fixed blade groove 474 in the width direction Y is 0.5 mm at the tip end 474a and 0.45 mm at the rear end 474b.

[0071] This allows for a larger width W1 at the base side of the fixed blade crosspiece 472. In this embodiment, the width W1 in the width direction Y of the fixed blade crosspiece 472 is 0.4 mm at the tip side 474a and 0.45 mm at the back side 474b.

[0072] It is also possible to make the width W2 of the fixed blade groove 474 in the width direction Y gradually wider from the tip side 474a toward the back side 474b, which will make it possible to more reliably guide the hair to the back side 474b.

[0073] In this embodiment, the depth of the fixed blade groove 474 in the front-rear direction X is set to a depth that allows hair to be cut within the movable range of the movable blade 46 in the front-rear direction X. That is, when the hair cutting height is set in the range of 0.3 mm to 1.5 mm, the fixed blade groove 474 and the movable blade groove 463 overlap in a plan view. Specifically, the depth L1 of the fixed blade groove 474 in the front-rear direction X is set to approximately 5.8 mm. When the hair cutting height is set in the range of 0.3 mm to 1.5 mm, the length on the sliding contact surface P2 from the tip of the fixed blade 47 (the tip of the uniform portion 4731) to the tip of the movable blade 46 is set to approximately 0.4 mm to 3.4 mm. This allows hair to be cut within the movable range of the movable blade 46 in the front-rear direction X.

[0074] In this embodiment, the sum of the width W1 of the fixed blade bar 472 in the width direction Y and the width W2 of the fixed blade groove 474 in the width direction Y is set to 0.5 mm or more and 1.0 mm or less. Under these conditions, the width W2 of the fixed blade groove 474 in the width direction Y is set to 0.3 mm or more.

[0075] This allows the width W2 of the fixed blade groove 474 in the width direction Y to be large enough so as not to hinder the introduction of hair. For example, if the thickness of a hair is approximately 0.1 mm, by making the width W2 of the fixed blade groove 474 in the width direction Y 0.3 mm or more, it becomes possible to introduce at least two or three hairs into the fixed blade groove 474.

[0076] Furthermore, if the sum of the width W1 in the width direction Y of the fixed blade bar 472 and the width W2 in the width direction Y of the fixed blade groove 474 is set to 0.5 mm or more and 1.0 mm or less, the width W1 in the width direction Y of the fixed blade bar 472 can be set to at least 0.2 mm. As a result, the width W1 in the width direction Y of the fixed blade bar 472 is prevented from becoming too narrow, and it is possible to prevent the contact area of ​​the fixed blade bar 472 with the skin from becoming small.

[0077] Furthermore, the width W2 of the fixed blade groove 474 in the width direction Y is at most 0.8 mm, which prevents the width W2 of the fixed blade groove 474 in the width direction Y from becoming too large. And, the width W1 of the fixed blade crosspiece 472 in the width direction Y is at most 0.7 mm, which prevents the width W1 of the fixed blade crosspiece 472 in the width direction Y from becoming too large. This makes it possible to space the multiple fixed blade crosspieces 472 at a narrower pitch, which makes it possible to ensure the number of blades of the fixed blade 47 (the number of fixed blade crosspieces 472). And, by spaced at a narrower pitch, it is possible to prevent the skin (scalp) from getting too close to the fixed blade groove 474 during use, which further improves safety during use.

[0078] In this way, if the fixed blade crosspiece 472 and the fixed blade groove 474 are designed to satisfy the above relationship, it is possible to simultaneously improve hair introduction, ensure the strength of the fixed blade 47, and ensure the number of blades of the fixed blade 47 (the number of fixed blade crosspieces 472).

[0079] 21, when movable blade 46 is positioned at the most distal end of fixed blade 47 (when the cutting height is set to the shortest), movable blade 46 may be configured to face uniform portion 4731 in the up-down direction Z. In other words, movable blade 46 may be configured to face uniform portion 4731 in the up-down direction Z when slid in the front-rear direction X.

[0080] This may make it possible to absorb design errors and the like, and to maintain a constant cutting height even if the position of the movable blade 46 is slightly shifted.

[0081] As shown in FIG. 22, a uniform portion 4731 may be formed so as to protrude toward the skin contact surface P3 (at least one of the sliding contact surface P2 and the skin contact surface P3).

[0082] By doing so, the skin contact surface P3 side of fixed blade 47 may be made flat, which may allow fixed blade 47 to slide smoothly over the skin during use. Also, by making the sliding contact surface P2 side with movable blade 46 a curved surface, movable blade 46 may not move further to the tip side than the curved portion, which may allow for safer use.

[0083] It is also possible to make the uniform portion 4731 protrude toward the sliding contact surface P2 side and the skin contact surface P3 side.

[0084] [Actions and Effects] The following describes the characteristic configurations of the clipper blades and clippers shown in the above embodiment and its modified examples, as well as the effects obtained thereby.

[0085] The hair clipper blade 45 shown in the above embodiment and its modified examples includes a fixed blade 47 and a movable blade 46 that can cut hair by sliding back and forth along one direction relative to the fixed blade 47. The fixed blade 47 also includes a sliding surface P2 against which the movable blade 46 can slide and a skin contact surface P3 that can come into contact with the skin. When the fixed blade 47 is viewed along one direction, the skin contact surface P3 is inclined relative to the sliding surface P2 so that the distance to the tip becomes shorter, and the movable blade 46 is configured to slide on the sliding surface P2 of the fixed blade 47 in an intersecting direction that intersects the one direction. The tip 473 of the fixed blade 47 has a uniform portion 4731 whose thickness is uniform in both the one direction and a thickness direction intersecting the intersecting direction.

[0086] In this way, the clipper blades 45 shown in the above embodiment and its modified examples are configured to allow for adjustment of the cutting height. The tip 473 of the fixed blade 47 of the clipper blades 45 with adjustable cutting height has a uniform portion 4731 with a uniform thickness.

[0087] In this way, even if the cutting height is made shorter, it is possible to reduce the irritation given to the skin by uniform portion 4731.

[0088] Therefore, with the clipper blade 45 shown in the above embodiment and its modified example, it becomes possible to set the cutting height shorter while further reducing irritation to the skin during use.

[0089] The movable blade 46 may also be configured to be able to slide stepwise in the cross direction.

[0090] This eliminates the need for the user to make fine adjustments to the cutting height, as would be required if the mower were to slide continuously, making it easier to set the cutting height.

[0091] Furthermore, the uniform portion 4731 may protrude toward at least one of the sliding contact surface P2 and the skin contact surface P3.

[0092] For example, if the uniform portion 4731 is made to protrude toward the sliding surface P2, the protrusion on the sliding surface P2 side of the uniform portion 4731 can prevent the movable blade 46 from sliding too far toward the tip when sliding on the sliding surface P2.

[0093] Furthermore, since the skin contact surface P3 side can be made flat, the slipperiness against the skin can be further improved.

[0094] On the other hand, if the uniform portion 4731 is made to protrude toward the skin contact P3, the sliding surface P2 can be made flat, which makes it possible to prevent the movable blade 46 from interfering with the uniform portion 4731 when sliding the movable blade 46 on the sliding surface P2.

[0095] Furthermore, by making the skin contact surface P3 side of the uniform portion 4731 protrude, when fixed blade 47 is brought into contact with a curved surface such as the head, the protruding portion can be brought into contact with the head, thereby preventing skin contact surface P3 from tilting from the appropriate position relative to the head. In other words, when used on an uneven surface such as the head, fixed blade 47 can be more reliably maintained in the appropriate position. As a result, hair and other hair can be more reliably cut to the set length.

[0096] Furthermore, when the uniform portion 4731 is configured to protrude toward the sliding contact surface P2 and the skin contact surface P3, it is possible to obtain both of the above-mentioned effects.

[0097] Furthermore, the fixed blade 47 may have a curved portion 4731a formed at the tip thereof.

[0098] This allows the curved portion 4731a to be in contact with the skin during use, thereby more reliably reducing irritation to the skin during use.

[0099] Furthermore, the length L2 of the uniform portion 4731 in the cross direction may be greater than the thickness T2 in the thickness direction.

[0100] In this way, even when curved portion 4731a is provided at the tip of uniform portion 4731, uniform portion 4731 can be configured to have a straight portion (flat portion). As a result, fixed blade 47 can be made to feel good against the skin, while preventing movable blade 46 from sliding too far on sliding surface P2.

[0101] Furthermore, the movable blade 46 may be configured to be able to face the uniform portion 4731 in the thickness direction when slid in the cross direction.

[0102] This makes it possible to maintain a constant cutting height even if the position of the movable blade 46 is slightly shifted due to design errors, etc. As a result, the accuracy of the minimum cutting height can be further improved.

[0103] The fixed blade 47 may also include a plurality of fixed blade bars 472 that protrude in the intersecting direction and are arranged side by side in one direction, and fixed blade grooves 474 that are provided between adjacent fixed blade bars 472. The fixed blade groove 474 may have a width W2 in one direction that is different between a tip side 474a and a back side 474b in the intersecting direction.

[0104] For example, if the width W2 of the tip side 474a is made wider than the width W2 of the rear side 474b, it becomes possible to increase the width W1 of the base side of the fixed blade crosspiece 472, thereby further improving the strength of the fixed blade crosspiece 472.

[0105] On the other hand, if the width W2 of the tip side 474a is made narrower than the width W2 of the back side 474b, it becomes possible to introduce the hair to the back side more reliably.

[0106] In addition, the fixed blade 47 may be formed so that the sum of the one-directional width W1 of the fixed blade crosspiece 472 and the one-directional width W2 of the fixed blade groove 474 is 0.5 mm or more and 1.0 mm or less, and the one-directional width W2 of the fixed blade groove 474 is 0.3 mm or more.

[0107] This allows the width W2 of the fixed blade groove 474 in one direction to be large enough so as not to hinder the introduction of hair. Furthermore, it is possible to prevent the contact area of ​​the fixed blade crosspiece 472 with the skin from becoming small, and it is also possible to prevent the width W2 of the fixed blade groove 474 in one direction from becoming too large. As a result, it is possible to prevent the fixed blade groove 474 from digging too deeply into the skin during use.

[0108] In this way, by setting the width W1 in one direction of fixed blade crosspiece 472 and the width W2 in one direction of fixed blade groove 474 as described above, it is possible to prevent the contact area of ​​fixed blade crosspiece 472 with the skin from becoming smaller without interfering with the introduction of hair into fixed blade groove 474. As a result, it is possible to provide hair clipper blades 45 that are easy to use while also improving safety.

[0109] Furthermore, the clipper blade 45 shown in the above embodiment and its modified example has the advantage of being able to simultaneously improve hair introduction, ensure the strength of the fixed blade 47, and ensure the number of blades of the fixed blade 47 (the number of fixed blade bars 472).

[0110] Moreover, the hair clippers 10 shown in the above embodiment and its modified examples are provided with the above-mentioned hair clipper blades 45.

[0111] By using such clippers 10, it is possible to set the cutting height shorter while further reducing irritation to the skin during use.

[0112] [others] The details of the hair clipper blades according to the present disclosure have been described above, but it will be obvious to those skilled in the art that the present disclosure is not limited to these descriptions and that various modifications and improvements are possible.

[0113] For example, the present disclosure can be applied to embodiments in which the configurations shown in the above-described embodiments and their modifications have been changed, replaced, added, or omitted. Furthermore, it is also possible to combine the components described in the above-described embodiments and their modifications to create new embodiments.

[0114] Furthermore, in the above-described embodiment and its modified examples, the width W2 of the fixed blade groove 474 in the width direction Y is gradually narrowed from the tip side 474a toward the rear side 474b. However, it is not necessary for the width W2 to gradually narrow from the tip side 474a to the rear side 474b. For example, it is also possible to form a step midway from the tip side 474a to the rear side 474b. It is also possible for the width W2 to gradually narrow from the tip side 474a to a certain point, and to maintain a constant width from that point to the rear side 474b.

[0115] Furthermore, in the above-described embodiment and its modified examples, the entire tip portion 473 is exemplified as being uniform portion 4731. However, it is not necessary for the entire tip portion 473 to be uniform portion 4731, and it is also possible for only a part of tip portion 473 to be uniform portion. In this case, the uniform portion may be provided on the tip side of tip portion 473, or on the base side of tip portion 473.

[0116] In addition, the movable blade, fixed blade, and other detailed specifications (shape, size, layout, etc.) can also be changed as appropriate. [Industrial Applicability]

[0117] As described above, the hair clipper blades and hair clippers disclosed herein can be set to a shorter cutting height while further reducing irritation to the skin during use, and therefore can be used as hair clippers for cutting human hair or pet hair clippers for cutting pet hair. [Explanation of symbols]

[0118] 10 Clippers 45 Blade (hair clipper blade) 46 Movable blade 47 Fixed blade 472 Fixed blade crosspiece 473 Tip 4731 Uniform part 4731a Curved section 474 Fixed blade groove L2 Length of uniform section in the cross direction P2 Sliding surface (fixed blade side surface) P3 Skin contact surface (side opposite the fixed blade) T2 Thickness of uniform part in thickness direction W1 Width of fixed blade crosspiece in one direction W2 Width of fixed blade groove in one direction

Claims

1. A fixed blade and a movable blade that can cut hair by sliding back and forth in one direction relative to the fixed blade; Equipped with The fixed blade has a sliding contact surface with which the movable blade can slide and a skin contact surface with which the skin can come into contact, When the fixed blade is viewed in the one direction, the skin contact surface is inclined relative to the sliding contact surface so that the distance therebetween becomes shorter on the tip side, the movable blade is configured to be able to slide on the sliding contact surface of the fixed blade in an intersecting direction intersecting the one direction, a tip end of the fixed blade having a uniform portion having a uniform thickness in the one direction and in a thickness direction intersecting the intersecting direction; the fixed blade includes a plurality of fixed blade bars that protrude in the intersecting direction and are arranged side by side in the one direction, and fixed blade grooves that are provided between adjacent fixed blade bars, The fixed blade groove has a width in the one direction that is different between a tip end side and a rear end side in the intersecting direction, the fixed blade is formed so that, at the tip in the intersecting direction, the sum of the width of the fixed blade bar in one direction and the width of the fixed blade groove in one direction is 0.5 mm or more and 1.0 mm or less, and the width of the fixed blade groove in one direction is 0.3 mm or more; Clipper blades.

2. The movable blade is configured to be able to slide stepwise in the intersecting direction. The hair clipper blade of claim 1.

3. The uniform portion protrudes toward at least one of the sliding contact surface and the skin contact surface. A hair clipper blade according to claim 1 or 2.

4. A curved portion is formed at the tip of the fixed blade. The hair clipper blade according to any one of claims 1 to 3.

5. The uniform portion has a length in the cross direction that is greater than a thickness in the thickness direction. A hair clipper blade according to any one of claims 1 to 4.

6. The movable blade is configured to be able to face the uniform portion in the thickness direction when slid in the intersecting direction. A hair clipper blade according to any one of claims 1 to 5.

7. A hair clipper blade according to any one of claims 1 to 6, Clippers.

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