Cutting device

Abstract

To provide a cutting device that can more reliably suppress a dial from being erroneously operated during use.SOLUTION: A cutting device 10 comprises: a main body part 11 having a holding portion 11a; and a blade part 45 which has a fixed blade 47 that is fixed to the main body part 11 and a movable blade 46 that can slide-reciprocate with respect to the fixed blade 47. Further the cutting device 10 comprises: a dial 21 that is turnably attached to the main body part 11, and is operated to adjust a cutting height; and a cover 30 partially covering the dial 21 while allowing the dial 21 to turn. The dial 21 is attached between the holding portion 11a in the main body part 11 and the blade part 45, and the cover 30 covers a holding portion side of the dial 21.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a cutting device. [Background technology]

[0002] Conventionally, as disclosed in Patent Document 1 below, a clipper has been proposed as a cutting device, which includes a blade section having a fixed blade and a movable blade, and a main body section to which the blade section is attached, and cuts hair by sliding the movable blade back and forth against the fixed blade.

[0003] In Patent Document 1, the hair clipper as a cutting device is provided with a cutting height adjustment mechanism that can change the cutting height of hair (the length of hair remaining after cutting by the blade), and the cutting height adjustment mechanism is provided with a dial that is rotatably attached to the main body 11. By manipulating the dial (rotating the dial relatively to the main body), the movable blade slides in a direction intersecting the reciprocating sliding relative to the fixed blade, and the movable blade slides in a direction intersecting the reciprocating sliding relative to the fixed blade, thereby adjusting the cutting height of hair. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2015-195869 A Summary of the Invention [Problem to be solved by the invention]

[0005] In a cutting device of the type in which the cutting height is adjusted by operating a dial as described above, it is preferable to be able to more reliably prevent erroneous operation of the dial during use.

[0006] Therefore, an object of the present disclosure is to obtain a cutting device that can more reliably prevent erroneous operation of the dial during use. [Means for solving the problem]

[0007] A cutting device according to one aspect of the present disclosure comprises a main body having a handle portion, a blade portion having a fixed blade fixed to the main body portion and a movable blade capable of sliding back and forth against the fixed blade, a dial rotatably attached to the main body portion and operated to adjust the cutting height, and a cover covering a portion of the dial while allowing the dial to rotate, wherein the dial is attached between the handle portion and the blade portion on the main body portion, and the cover covers the handle portion side of the dial. Effect of the Invention

[0008] According to the present disclosure, it is possible to obtain a cutting device that can more reliably prevent erroneous operation of the dial during use. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view showing an example of a hair clipper according to an embodiment. [Diagram 2] FIG. 1 is a front view showing an example of a hair clipper according to an embodiment. [Diagram 3] FIG. 1 is a side view showing an example of a hair clipper according to an embodiment. [Figure 4] 3 is a cross-sectional view taken along line AA in FIG. 2. [Diagram 5] 2 is a perspective view showing an example of a blade block included in the hair clipper according to the embodiment; FIG. [Figure 6] 2 is a plan view showing an example of a blade block included in the hair clipper according to the embodiment; FIG. [Figure 7] 4 is a rear view showing an example of a blade block included in the hair clipper according to the embodiment; FIG. [Figure 8] 3 is a side view showing an example of a blade block included in the hair clipper according to the embodiment; FIG. [Figure 9] 2 is an exploded perspective view showing an example of a blade block included in the hair clipper according to the embodiment; FIG. [Figure 10] FIG. 2 is a cross-sectional view showing an example of a cutting height adjustment mechanism provided in the hair clippers according to the embodiment, illustrating a state in which the cutting height is set to a maximum. [Figure 11] FIG. 2 is a cross-sectional view showing an example of a cutting height adjustment mechanism provided in the hair clippers according to the embodiment, illustrating a state in which the cutting height is set to a minimum. [Figure 12] FIG. 2 is a diagram showing an example of a cutting height adjustment mechanism provided in the hair clipper according to the embodiment, and is an enlarged plan view showing the inside of the dial when the cutting height is set to the maximum. [Figure 13] FIG. 13 is a diagram showing an example of a cutting height adjustment mechanism provided in the hair clippers according to the embodiment, and is an enlarged plan view showing the inside of the dial when the cutting height is set to the minimum. [Figure 14] FIG. 2 is a plan view showing an example of a dial according to an embodiment. [Figure 15] FIG. 2 is a side view showing an example of a dial according to an embodiment. [Figure 16] FIG. 4 is a back view showing an example of a dial according to an embodiment. [Figure 17] 10 is an enlarged view showing an engagement recess formed in the dial according to the embodiment. FIG. [Figure 18] 11A and 11B are diagrams showing a first modified example of an engagement recess and an engagement protrusion included in the hair clipper according to the embodiment. [Figure 19] 13A and 13B are diagrams showing a second modified example of an engagement recess and an engagement protrusion included in the hair clipper according to the embodiment. [Figure 20] 13A and 13B are diagrams showing a third modified example of an engagement recess and an engagement protrusion included in the hair clipper according to the embodiment. [Figure 21] 2 is an enlarged perspective view of a cover of the hair clipper according to the embodiment; FIG. [Figure 22] 2 is an enlarged cross-sectional view showing a cover of the hair clipper according to the embodiment; FIG. [Diagram 23] 1A to 1C are diagrams illustrating an example of a method for gripping the hair clippers according to the embodiment. [Figure 24]11A and 11B are diagrams illustrating a first modified example of a method for gripping the hair clippers according to the embodiment. [Diagram 25] 13A and 13B are diagrams illustrating a second modified example of a method for gripping the hair clippers according to the embodiment. [Figure 26] 13A and 13B are diagrams illustrating a third modified example of the method for gripping the hair clippers according to the embodiment. [Figure 27] FIG. 13 is a diagram showing a fourth modified example of the method for gripping the hair clippers according to the embodiment. [Figure 28] FIG. 13 is a diagram showing a fifth modified example of the method for gripping the hair clippers according to the embodiment. [Figure 29] FIG. 13 is a diagram showing a sixth modified example of the method for gripping the hair clippers according to the embodiment. [Diagram 30] FIG. 5 is an enlarged view of part B in FIG. [Diagram 31] 5 is an enlarged view of part C in FIG. 4. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, the embodiments will be described in detail with reference to the drawings. However, more detailed description than necessary may be omitted. For example, detailed description of already well-known matters or duplicate description of substantially the same configuration may be omitted.

[0011] It should be noted that 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.

[0012] In the following embodiment and its modified examples, a hair clipper that cuts the hair of a user or the like will be exemplified as the cutting device.

[0013] (Embodiment) 1 to 4, 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 (holding portion) 11a that can be held by hand.

[0014] The hair clipper 10 is a device for treating and styling the hair of a user, for example, by cutting the hair of the user 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 (one direction) 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 relative to the fixed blade 47, thereby sandwiching and cutting the hair between the fixed blade 47 and the movable blade 46.

[0015] In this embodiment, the main body 11 includes a housing 12 that forms a generally S-shaped 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. Furthermore, a display unit 12b is formed on the front of the housing 12 for checking the on / off state of the power supply, the charging status of the rechargeable battery 13, and the like.

[0016] In this embodiment, the housing 12 is formed by joining a plurality of divided bodies, and a cavity is formed inside the housing 12 formed by joining the divided bodies. Various electric components are accommodated in this cavity. The plurality of divided bodies can be joined together, for example, by using screws or by fitting the divided bodies together.

[0017] 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. In addition, a power transmission mechanism 15 that transmits the rotational driving force of the electric motor 14 to the blade block 40 and a shaft 16 that is reciprocated by the power transmission mechanism 15 are housed in a cavity formed inside the housing 12. In this embodiment, as shown in FIG. 4, the shaft 16 is housed in the cavity inside the housing 12 with its tip protruding toward the blade block 40 side (upper side in FIG. 4), 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. In addition, the method of driving the blade block 40 is not limited to the above-mentioned method, and various methods are possible. For example, the blade block 40 can be driven using an eccentric shaft that is eccentrically rotated.

[0018] Furthermore, a cavity formed inside the housing 12 accommodates a control unit 17 and the like that controls the power supply to the electric motor 14 in response to depression of an operation switch 12a exposed to the outside.

[0019] The blade block 40 has a function of cutting hair, and includes a blade section (hair clipper blade) 45 formed by arranging a movable blade 46 and a fixed blade 47 so as to face each other, as shown in Figures 5 to 8. The blade section 45 is configured so that a movable blade bar 462 of the movable blade 46, which will be described later, slides back and forth in the width direction relative to a fixed blade bar 472 of the fixed blade 47, which will be described later.

[0020] 9, the blade block 40 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 in which it can rotate relatively to the fixed plate 41, and can be collapsed between a collapsed position shown in FIG. 10 and an upright position shown in FIG. 11.

[0021] 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 in which it can rotate relatively to the fixed plate 41.

[0022] The guide plate 42 is a member that is connected to the shaft 16 with the blade block 40 attached to the main body 11 and that reciprocates in the width direction, 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. The movable blade 46 slides reciprocally in the width direction relative to the fixed blade 47 in conjunction with the reciprocating movement of the guide plate 42 in the width direction.

[0023] 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 bar 462 and the fixed blade bar 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 opposite to the connecting portion 43b side of each coil portion 43a and fixed to the movable blade 46 to press the movable blade 46 toward the fixed blade 47.

[0024] Furthermore, in this embodiment, as shown in Figure 4, the blade stop spring 18 is fixed to the housing 12 by a screw or the like, and this blade stop spring 18 holds the blade block 40, thereby preventing the blade block 40 from coming out of the housing 12.

[0025] It is also possible to make it possible to attach an attachment to the blade block 40 so that the cutting height of the hair clippers 10 can be changed by attaching the attachment.

[0026] Furthermore, in the hair clippers 10 according to the present 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.

[0027] In this embodiment, the switching lever 44 has a cylindrical portion 44a that is inserted and held in the holding groove 41c of the fixed plate 41 in a state in which it can rotate relatively to the fixed plate 41. The switching lever 44 also has an accommodating recess 44b in which the coil portion 43a of the boost spring 43 is accommodated in a fitted state, and an accommodating recess 44c in which the connecting portion of the boost spring 43 is accommodated. 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 in which it is biased by the boost spring 43 toward the lying down position.

[0028] On the other hand, as shown in Figs. 10 to 13, the cutting height adjustment mechanism 20 includes a dial 21 for adjusting the cutting height that is rotatably attached to the main body 11, and a transmission mechanism 22 that raises and lowers the switching lever 44 of the blade block 40 in conjunction with the rotation of the dial 21. In this embodiment, the dial 21 for adjusting the cutting height is provided on the blade block 40 side (upper side in Fig. 1) of the operation switch 12a on the front side of the housing 12, that is, between the grip portion (holding portion) 11a of the main body 11 and the blade portion 45, in a state in which it can be rotated relative to the housing 12. At this time, 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. 10.

[0029] In this embodiment, a dial arrangement portion 121 is formed between the grip portion (holding portion) 11a of the main body 11 and the blade portion 45 so as to be recessed inward, and the dial 21 is arranged on this dial arrangement portion 121.

[0030] As shown in Figures 2 to 4 and 14 to 16, the dial 21 has a generally circular plate-shaped top wall 211 and a peripheral wall 212 extending from the outer periphery of the top wall 211 toward the housing 12 (dial placement portion 121).

[0031] Moreover, on the back side of the top wall 211 (the side facing the front surface 121a of the dial arrangement part 121), a bearing 2111 is formed into which a substantially cylindrical support shaft 1211 formed on the dial arrangement part 121 is fitted. In this embodiment, the bearing 2111 is also substantially cylindrical, and a through hole 2112 is formed in the center of this bearing 2111, penetrating the top wall 211 in the plate thickness direction.

[0032] In this embodiment, the hair clippers (cutting device) 10 includes a cover 30 that covers a part of the dial 21 while allowing the dial 21 to rotate, and a substantially cylindrical support shaft 311 formed in the cover 30 is inserted into the through hole 2112. In this manner, the cover 30 and the dial 21 are attached to the housing 12.

[0033] Specifically, a through hole 1211a penetrating the housing 12 in the plate thickness direction is also formed in the center of the support shaft 1211 in the dial arrangement part 121. When attaching the cover 30 and the dial 21 to the housing 12, as shown in FIG. 22, the support shaft 1211 formed in the dial arrangement part 121 is fitted into the through hole 2112 formed in the top wall 211, and the support shaft 311 formed in the cover 30 is inserted into the through hole 2112. At this time, the tip of the support shaft 311 faces the periphery of the through hole 1211a. Then, by fixing the support shaft 311 to the dial arrangement part 121 with the mounting screw 50 while the tip of the support shaft 311 faces the periphery of the through hole 1211a, the cover 30 is fixed to the housing 12, and the dial 21 is attached to the housing 12 and the cover 30 in a rotatable manner.

[0034] Furthermore, in this embodiment, a scale 2113 is provided on the outer periphery of the top surface 211a of the top wall 211. The scale 2113 can be formed by displaying a numerical value of the mowing height on the outer periphery of the top surface 211a of the top wall 211. This numerical value can be displayed, for example, by engraving or printing. As shown in FIG. 2, a mark line 313 is formed on the tip surface 31b of the cover 30, and the current mowing height can be recognized by visually checking the numerical value indicated by the mark line 313. Note that in the drawings, the scale 2113 is represented by a black circle without showing a specific numerical value.

[0035] Meanwhile, a plurality of uneven portions 2121 are formed along the circumferential direction on the peripheral surface 212a of the peripheral wall 212. Such uneven portions 2121 can be formed, for example, by knurling. When operating the dial 21, the user can hook his / her finger on the uneven portions 2121 to operate the dial 21. This makes it easier to operate the dial 21.

[0036] Furthermore, a protrusion 2122 is formed at the tip (housing 12 side) of the peripheral wall 212, protruding toward the surface 121a of the dial arrangement part 121. A predetermined clearance S1 is formed between the tip of this protrusion 2122 and the surface 121a of the dial arrangement part 121. This prevents the dial 21 from interfering with the housing 12 when the dial 21 is operated. The size of the clearance S1 formed at this time is preferably set to a size that can prevent hair chips (cuttings) H from entering the dial 21 as much as possible without impairing the operability of rotating the dial 21.

[0037] In this embodiment, the transmission mechanism 22 is accommodated in a cavity formed inside the housing 12, and includes a first conversion mechanism 221 and a second conversion mechanism 222.

[0038] 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 a reciprocating linear motion in the radial direction of the dial 21 (the up and down direction in the state shown in FIG. 10), and is provided with a groove 2211. As shown in FIGS. 12 and 13, 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 becomes smaller from one end 2211a to the other end 2211b.

[0039] 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 in 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-down direction in the state shown in FIG. 10) in conjunction with the movement of the pin 22121 in the groove 2211.

[0040] Furthermore, in this embodiment, a coil spring 2214 is attached to the rod 2212, and the coil spring 2214 biases the pin 22121 toward the other end 2211b within the groove 2211. This reduces the load required to rotate the dial 21 counterclockwise.

[0041] 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 rotary motion) about a rotation axis extending in the width direction (one direction), and includes 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 is extended in the width direction (one direction), 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. 10).

[0042] Furthermore, the second conversion mechanism 222 includes a rotating member 2222 having one end connected to the operation shaft 2221, and a rotating shaft 2223 extending in the width direction (one direction) 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 operation shaft 2221 in the width direction (one direction). In addition, the second conversion mechanism 222 includes an action member 2224 connected to the other end of the rotating member 2222 to perform an operation of raising and lowering the switching lever 44.

[0043] When the operating shaft 2221 is caused to perform a reciprocating linear motion in the radial direction of the dial 21 (the up and down direction in the state shown in FIG. 10), the rotating member 2222 rotates about the rotating shaft 2223 in conjunction with the reciprocating linear motion of the operating shaft 2221. In this manner, the action member 2224 connected to the rotating member 2222 rotates in conjunction with the other end of the rotating member 2222, and the switching lever 44 is raised and lowered by the rotation of the action member 2224.

[0044] In this embodiment, when the dial 21 is rotated counterclockwise, the slider 2213 and the operating shaft 2221 move linearly downward in the state shown in FIG. 10 and FIG. 11. Then, as the operating shaft 2221 moves downward, 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 downward and the other end connected to the acting member 2224 moves upward. Also, the acting member 2224 moves upward as the other end of the rotating member 2222 moves upward. Then, by moving the acting member 2224 upward, the switching lever 44 is rotated to the upright posture side 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) while being pressed against the fixed blade 47 via the push-up spring 43 and the guide plate 42.

[0045] On the other hand, when the dial 21 is rotated clockwise, the slider 2213 and the operating shaft 2221 move linearly upward in the state shown in FIG. 10 and FIG. 11. Then, 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. Also, the acting member 2224 moves downward as the other end of the rotating member 2222 moves downward. Then, by moving the acting member 2224 downward, the switching lever 44 is rotated to the lying down position side by the biasing force of the push-up spring 43. In this way, the movable blade 46 slides toward the base side (rearward in the front-rear direction) while being pressed against the fixed blade 47 via the push-up spring 43 and the guide plate 42.

[0046] In this manner, in this embodiment, when the dial 21 is rotated counterclockwise, the movable blade 46 slides toward the tip side of the fixed blade 47, and when the dial 21 is rotated clockwise, the movable blade 46 slides toward the base side of the fixed blade 47. Note that in this embodiment, rotating the dial 21 counterclockwise means turning the dial 21 counterclockwise in the state shown in Fig. 2, and rotating the dial 21 clockwise means turning the dial 21 clockwise in the state shown in Fig. 2.

[0047] At this time, the fixed blade 47 is tapered so that the tip side becomes thinner, and the movable blade 46 slides on the tapered fixed blade 47. That is, in this embodiment, the movable blade 46 slides between the root side and the tip side on the tapered fixed blade 47. In this way, the hair cutting height can be changed.

[0048] In this embodiment, when the dial 21 is rotated counterclockwise to rotate the switching lever 44 from the initial position to the upright position by a predetermined amount, the protrusion 44d comes into contact with the hook portion 41a of the fixed plate 41, so that further rising is restricted. That is, the protrusion 44d comes into contact with the hook portion 41a of the fixed plate 41 to restrict further rising of the switching lever 44, so that the sliding of the movable blade 46 toward the tip side is restricted. In addition, in this embodiment, when the switching lever 44 is in the initial position, the movable blade 46 is positioned at the most base side of the fixed blade 47 (the cutting height is the highest). And, when the rising of the switching lever 44 is restricted by the protrusion 44d, the movable blade 46 is positioned at the most tip side of the fixed blade 47 (the cutting height is the shortest).

[0049] 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 at one end side (the front side in the fore-and-aft direction) of the main body 461, and a plurality of movable blade grooves 463 formed between adjacent movable blade bars 462.

[0050] On the other hand, the fixed blade 47 includes a main body 471, a plurality of fixed blade bars 472 arranged side by side in the width direction at one end side (front side in the front-rear direction) of the main body 471, and a plurality of fixed blade grooves 473 formed between adjacent fixed blade bars 472. Each fixed blade bar 472 has a tapered portion that tapers toward the tip side (front side in the front-rear direction).

[0051] In this embodiment, the tapered portion is formed so that the cutting height is 2.0 mm when the movable blade 46 is positioned closest to the base of the fixed blade 47, and the cutting height is 0.8 mm when the movable blade 46 is positioned closest to the tip of the fixed blade 47. By operating the cutting height adjustment dial 21, the cutting height can be set to multiple levels between 2.0 mm and 0.8 mm.

[0052] Specifically, the mowing height adjustment mechanism 20 is provided with a holding mechanism 23 capable of holding the dial 21 in stages. By holding the dial 21 in stages by the holding mechanism 23, the mowing height can be changed in stages.

[0053] In this embodiment, the holding mechanism 23 includes a holding spring 231 fixed to a fixing portion 1214 provided on 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. The dial 21 is adapted to be rotated relative to the holding spring 231, and the engaged portion 232 formed on the back side of the dial 21 is also adapted to be rotated 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 suppressing the rotation of the dial 21 in both directions.

[0054] Specifically, the engaged portion 232 is formed to have a shape including an arc centered on the rotation axis C1. A plurality of engaging recesses (recesses) 2321 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 (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.

[0055] Thus, in this embodiment, the positions of the retaining spring 231 and the engaged portion 232 when any one of the seven engagement recesses 2321 is opposed to the engagement protrusion 2311 are the predetermined positions described above.

[0056] It is also possible to make the cutting height continuously changeable between 2.0 mm and 0.8 mm. The upper and lower limits of the cutting height can also be set as appropriate. Furthermore, when changing the cutting height in stages, any number of stages greater than or equal to two is acceptable, and it is not necessary to have seven stages.

[0057] Furthermore, the above-mentioned cutting height adjustment mechanism 20 is merely one example, and other cutting height adjustment mechanisms known in the art can be used as long as they are configured to allow the movable blade 46 to slide back and forth relative to the fixed blade 47 in response to user operation.

[0058] As described above, in this embodiment, when the dial 21 is rotated counterclockwise, the switching lever 44 is rotated to the upright position against the biasing force of the push-up spring 43, and the load required to rotate the dial 21 counterclockwise is greater than that required to rotate the dial 21 clockwise.

[0059] Therefore, in this embodiment, the pin 22121 is biased toward the other end 2211b side within the groove 2211 by the coil spring 2214. This reduces the load required to rotate the dial 21 counterclockwise.

[0060] However, even if the coil spring 2214 is provided, there is a difference in the load required for rotation between when the dial 21 is rotated counterclockwise and when the dial 21 is rotated clockwise. Therefore, with the configuration of the conventional cutting height adjustment mechanism 20, it is difficult to further improve the operability of the dial 21.

[0061] Therefore, in this embodiment, the operability of the dial 21 is further improved.

[0062] Specifically, the cutting height adjustment mechanism 20 is provided with a holding mechanism 23 capable of holding the dial 21 in stages, and the holding mechanism 23 is provided with an engagement recess (recess) 2321 and an engagement protrusion (protrusion) 2311 that are releasably engaged with each other. At least one of the engagement recess (recess) 2321 and the engagement protrusion (protrusion) 2311 has a deformed engagement portion 232 that has a different shape on one side and the other side in the rotation direction of the dial 21.

[0063] In this embodiment, each of the seven engagement recesses (recesses) 2321 formed in the dial 21 is a different shaped engagement portion 232 having a different shape between one side and the other side in the rotation direction of the dial 21.

[0064] Specifically, as shown in Fig. 17, the engagement recess (recess) 2321 as the irregular engagement portion 232 has a different inclination angle θ1 on one side and the other side in the rotation direction of the dial 21. In this embodiment, the difference between the load required to rotate the dial 21 to one side and the load required to rotate the dial 21 to the other side is made smaller than when the shapes of the one side and the other side in the rotation direction of the dial 21 are the same. That is, the engagement recess (recess) 2321 is formed so that the inclination angle θ11 of the first inclined surface 23211 located on the side where the dial 21 is rotated to a lower mowing height is larger than the inclination angle θ12 of the second inclined surface 23212 located on the side where the dial 21 is rotated to a higher mowing height.

[0065] This reduces the difference between the load required to rotate dial 21 to one side and the load required to rotate dial 21 to the other side, thereby further improving the operability of dial 21.

[0066] In this embodiment, the first inclined surface 23111 located on one side of the engaging protrusion (convex portion) 2311 and the second inclined surface 23112 located on the other side have the same shape, but it is possible to make the inclination angle θ1 of the engaging protrusion (convex portion) 2311 different as well as the engaging recess (recess) 2321. It is also possible to make the shape of the engaging recess (recess) 2321 the same shape and make the inclination angle θ1 on both sides of the rotation direction of the engaging protrusion (convex portion) 2311 different.

[0067] In this way, by simply changing the inclination angle θ1, it is possible to reduce the difference between the load required to rotate dial 21 to one side and the load required to rotate dial 21 to the other side, making it easier to set the load of dial 21.

[0068] It is also possible to make the load required to rotate dial 21 to one side substantially the same as the load required to rotate dial 21 to the other side. In this way, by making the operating force of dial 21 to increase the mowing height substantially the same as the operating force of dial 21 to decrease the mowing height, the operability of dial 21 can be further improved.

[0069] As shown in FIG. 18, it is also possible to make the engagement recess (recess) 2321 into a deformed engagement portion 232 by making the climbing height H1 different between one side and the other side in the rotation direction of the dial 21.

[0070] For example, as shown in Fig. 18, it is possible to form the engagement recess (recess) 2321 so that the clearance height H11 on the side where the dial 21 is rotated to decrease the mowing height is lower than the clearance height H12 on the side where the dial 21 is rotated to increase the mowing height. In this case, the height from the top of the engagement protrusion (convex portion) 2311 to the base ends on both sides in the rotation direction becomes the clearance height H1.

[0071] In this way, by simply varying the clearance height H1, it is possible to reduce the difference between the load required to rotate the dial 21 to one side and the load required to rotate the dial 21 to the other side, making it easier to set the load of the dial 21.

[0072] It is also possible to make the load required to rotate dial 21 to one side substantially the same as the load required to rotate dial 21 to the other side. In this way, by making the operating force of dial 21 to increase the mowing height substantially the same as the operating force of dial 21 to decrease the mowing height, the operability of dial 21 can be further improved.

[0073] 18, the first inclined surface 23111 located on one side and the second inclined surface 23112 located on the other side of the engaging protrusion (convex portion) 2311 have the same shape, but it is possible to make different not only the engaging recess (recess) 2321 but also the climbing height H1 of the engaging protrusion (convex portion) 2311. It is also possible to make the shape of the engaging recess (recess) 2321 the same shape and make the climbing height H1 on both sides in the rotation direction of the engaging protrusion (convex portion) 2311 different.

[0074] Also, as shown in FIGS. 19 and 20, it is possible for the engaging recess (recess) 2321 and the engaging protrusion (protrusion) 2311 to be formed with curved surfaces.

[0075] Even in such a case, by making the inclination angle θ1 on both sides of the rotation direction of the engagement recess (recess) 2321 different, as shown in FIG. 19, it is possible to reduce the difference between the load required to rotate the dial 21 to one side and the load required to rotate the dial 21 to the other side.

[0076] In this way, when the engagement recess (recess) 2321 is formed with a curved surface, it is sufficient to make different the inclination angle θ1 (inclination angle θ11 on one side, inclination angle θ12 on the other side) of the tangent (tangent L1 on one side, tangent L2 on the other side) passing through the contact points (contact point P1 on one side, contact point P2 on the other side) between the engagement recess (recess) 2321 and the engagement protrusion (protrusion) 2311. In other words, the engagement recess (recess) 2321 is formed so that the inclination angle θ11 of the tangent L1 located on the side where the dial 21 is rotated to decrease the mowing height is larger than the inclination angle θ12 of the tangent L2 located on the side where the dial 21 is rotated to increase the mowing height.

[0077] Furthermore, as shown in FIG. 20, by making the clearance height H1 on both sides of the rotation direction of the engagement recess (recess) 2321 different, it is possible to reduce the difference between the load required to rotate the dial 21 to one side and the load required to rotate the dial 21 to the other side.

[0078] In this case, similarly to FIG. 18, the height from the top of the engaging protrusion (convex portion) 2311 to the base ends on both sides in the rotation direction becomes the respective climbing heights H1.

[0079] 19, the first inclined surface 23111 located on one side and the second inclined surface 23112 located on the other side of the engaging protrusion (convex portion) 2311 have the same shape, but it is possible to make the inclination angle θ1 of the engaging protrusion (convex portion) 2311 different as well as the engaging recess (recess) 2321. It is also possible to make the shape of the engaging recess (recess) 2321 the same shape and make the inclination angle θ1 on both sides of the rotation direction of the engaging protrusion (convex portion) 2311 different.

[0080] 20, the first inclined surface 23111 located on one side and the second inclined surface 23112 located on the other side of the engaging protrusion (convex portion) 2311 have the same shape, but it is possible to make different not only the engaging recess (recess) 2321 but also the climbing height H1 of the engaging protrusion (convex portion) 2311. It is also possible to make the shape of the engaging recess (recess) 2321 the same shape, and to make different the climbing height H1 on both sides in the rotation direction of the engaging protrusion (convex portion) 2311.

[0081] It is also possible to form the irregular engagement portion 232 by making the shapes of one side and the other side of the rotation direction of the dial 21 different so that the difference between the load required to rotate the dial 21 to one side and the load required to rotate the dial 21 to the other side is larger than when the shapes of one side and the other side of the rotation direction of the dial 21 are the same.

[0082] Such a different shaped engaging portion 232 can be formed by applying the shapes shown in FIGS.

[0083] In this way, by increasing the difference between the load required to rotate dial 21 to one side and the load required to rotate dial 21 to the other side, it is possible to make the load required to rotate dial 21 to one side and the load required to rotate dial 21 to the other side more clearly different. Therefore, it becomes possible to know, just by operating dial 21, whether dial 21 is being operated to increase the mowing height or decrease the mowing height, without visually checking the scale or the like.

[0084] In this way, by making it possible to recognize the direction of movement of the dial simply by operating the dial 21 without visually checking, the operability of the dial 21 can be further improved.

[0085] It is also possible to configure the dial 21 so that the shape of the part that is touched by the finger is different. For example, the dial 21 can be configured so that there are parts where the height and width of the uneven part 2121 are different. In this way, it becomes possible to recognize the current cutting height before turning the dial 21. However, in order to be able to recognize the difference from other parts just by touching with a finger, it is preferable to make the shape different only at the representative cutting height, rather than changing the shape at all cutting heights. For example, it is preferable to make the shapes different when the cutting height is the highest, when the cutting height is the lowest, and when the cutting height is the median. In this way, it becomes possible to more clearly recognize whether the cutting height is at the representative cutting height or not just by touching the dial 21.

[0086] By configuring the dial 21 in this way, the operability of the dial 21 can be further improved.

[0087] In this embodiment, the main body 11 is provided with a cover 30 that covers a part of the dial 21 while allowing the dial 21 to rotate. By providing such a cover 30 on the main body 11, it becomes possible to prevent the dial 21 from being operated erroneously when using the hair clippers (cutting device) 10, but it is preferable to more reliably prevent the dial 21 from being operated erroneously.

[0088] Therefore, in this embodiment, it is possible to more reliably prevent erroneous operation of the dial 21. Specifically, as shown in Fig. 21 and Fig. 22, the grip portion side of the dial 21 attached between the grip portion (holding portion) 11a of the main body 11 and the blade portion 45 is covered with a cover 30.

[0089] In this way, when the clippers (cutting device) 10 is used by holding the grip portion (holding portion) 11a, the cover 30 can prevent fingers from touching the dial 21. In other words, when the clippers (cutting device) 10 is used by holding the grip portion (holding portion) 11a, the cover 30 can prevent fingers from touching the dial 21.

[0090] In this embodiment, the cover 30 includes a top wall 31 that covers the top surface 211a of the dial 21, a peripheral wall 32 that covers the peripheral surface 212a on the grip side of the dial 21, and a connecting wall 33 that connects the top wall 31 and the peripheral wall 32.

[0091] A locking piece 34 is connected to the other end of the peripheral wall 32, and a slit 1213 into which the locking piece 34 is inserted is formed in the main body 11. When the cover 30 is attached to the main body 11, as shown in Figures 22 and 31, the locking piece 34 is inserted into the slit 1213 formed in the main body 11, and a locking hook 341 formed on the locking piece 34 is locked to a locked portion 1215 formed on the main body.

[0092] In this way, the grip side of the peripheral surface 212 a of the dial 21 is covered by the peripheral wall 32 of the cover 30 .

[0093] In this embodiment, the slit 1213 is formed along the circumferential direction on the gripping side of the dial arrangement part 121, and the locked part 1215 is formed on the gripping side inside the slit 1213. In this way, the slit 1213 is covered by the cover 30.

[0094] In this embodiment, the cover 30 has multiple types of surfaces (for example, the top surface 31a, the peripheral surface 32a, the connecting surface 33a, etc.). The cover having multiple types of surfaces means that the surface of the cover has two or more surfaces that are different in at least one of the normal direction, curvature, and curved form of the curved surface (whether it is a concave curved surface or a convex curved surface). In this embodiment, the surface of the cover 30 is formed of multiple different types of surfaces, such as the top surface 31a, which is a flat surface whose normal direction is in the direction of the rotation axis C1, the peripheral surface 32a, which is a convex curved surface, and the connecting surface 33a, which has a curvature different from that of the peripheral surface 32a. In this embodiment, the surface of the cover 30 is formed into a shape that combines multiple different types of surfaces, so that the hair clipper (cutting device) 10 can be used in multiple ways while preventing erroneous operation of the dial 21.

[0095] For example, the hair clippers (cutting device) 10 can be held in the manner shown in Fig. 23. Fig. 23 shows a holding method in which the thumb F1 is placed on the top surface 31a with the tip hooked on the protrusion 312, while the other fingers (index finger F2, middle finger F3, ring finger F4, little finger F5) hold the grip portion (holding portion) 11a.

[0096] The protrusion 312 is formed at the tip of the top wall 31 on the blade portion 45 side so as to protrude in a direction away from the dial 21. Therefore, by placing the thumb F1 on the top surface 31a with the tip hooked on the protrusion 312, it becomes possible to more reliably prevent the thumb F1 placed on the cover 30 from slipping toward the blade portion 45, and it becomes possible to more reliably prevent erroneous operation of the dial 21.

[0097] Furthermore, the protrusion 312 is formed so that the surface 312a on the grip 11a side is a concave curved surface. This makes it possible to use the hair clipper (cutting device) 10 with a finger (e.g., thumb F1) fitting on the surface (concave curved surface) 312a on the grip 11a side of the protrusion 312, thereby further improving the usability of the hair clipper (cutting device) 10.

[0098] Even when the hair clippers (cutting device) 10 is held in this manner, it is possible to use the hair clippers (cutting device) 10 while preventing erroneous operation of the dial 21.

[0099] It is also possible to hold the hair clippers (cutting device) 10 in a manner shown in Fig. 24. Fig. 24 shows a holding method in which the thumb F1 presses the connecting surface 33a while the other fingers (index finger F2, middle finger F3, ring finger F4, and little finger F5) hold the grip portion (holding portion) 11a.

[0100] Even when the hair clippers (cutting device) 10 is held in this manner, it is possible to use the hair clippers (cutting device) 10 while preventing erroneous operation of the dial 21.

[0101] In addition, the connecting surface 33a of the connecting wall 33 is a convex curved surface, which can reduce the irritation applied to the fingers from the connecting wall 33 when the fingers are placed on the connecting surface 33a of the connecting wall 33 or when the fingers come into contact with the connecting surface 33a of the connecting wall 33. Therefore, even when the hair clipper (cutting device) 10 is held in the manner shown in FIG. 24, it is possible to use the hair clipper (cutting device) 10 for a longer period of time.

[0102] It is also possible to hold the hair clippers (cutting device) 10 in a manner shown in Fig. 25. Fig. 25 shows a holding method in which the tip of the thumb F1 presses the peripheral surface 32a while the other fingers (index finger F2, middle finger F3, ring finger F4, and little finger F5) hold the grip portion (holding portion) 11a.

[0103] Even when the hair clippers (cutting device) 10 is held in this manner, it is possible to use the hair clippers (cutting device) 10 while preventing erroneous operation of the dial 21.

[0104] It is also possible to hold the hair clippers (cutting device) 10 in a manner shown in Fig. 26. Fig. 26 shows a holding method in which the side of the thumb F1 is placed against the peripheral surface 32a, while the other fingers (index finger F2, middle finger F3, ring finger F4, and little finger F5) hold the grip portion (holding portion) 11a.

[0105] Even when the hair clippers (cutting device) 10 is held in this manner, it is possible to use the hair clippers (cutting device) 10 while preventing erroneous operation of the dial 21.

[0106] It is also possible to hold the hair clippers (cutting device) 10 in a manner shown in Fig. 27. Fig. 27 shows a holding method in which the index finger F2 presses the top surface 31a while the other fingers (thumb F1, middle finger F3, ring finger F4, and little finger F5) pinch the grip portion (holding portion) 11a.

[0107] Even when the hair clippers (cutting device) 10 is held in this manner, it is possible to use the hair clippers (cutting device) 10 while preventing erroneous operation of the dial 21.

[0108] It is also possible to hold the hair clippers (cutting device) 10 in a manner shown in Fig. 28. Fig. 28 shows a holding method in which the side of the little finger F5 is placed against the peripheral surface 32a, while the other fingers (thumb F1, index finger F2, middle finger F3, ring finger F4) hold the grip portion (holding portion) 11a.

[0109] Even when the hair clippers (cutting device) 10 is held in this manner, it is possible to use the hair clippers (cutting device) 10 while preventing erroneous operation of the dial 21.

[0110] It is also possible to hold the hair clippers (cutting device) 10 in a manner shown in Fig. 29. Fig. 29 shows a holding method in which the side of the index finger F2 is placed against the peripheral surface 32a, while the other fingers (thumb F1, middle finger F3, ring finger F4, little finger F5) hold the grip portion (holding portion) 11a.

[0111] Even when the hair clippers (cutting device) 10 is held in this manner, it is possible to use the hair clippers (cutting device) 10 while preventing erroneous operation of the dial 21.

[0112] In this way, in this embodiment, even if the method of holding the hair clippers (cutting device) 10 is different, it is possible to more reliably prevent the dial 21 from being operated incorrectly when using the hair clippers (cutting device) 10.

[0113] In addition, by making the cover 30 cover the grip side of the dial 21, it is possible to prevent fingers from coming into contact with the dial 21 when changing the gripping method while using the clippers (cutting device) 10, such as by changing the gripping method to place fingers on the cover 30 when using the clippers without placing fingers on the cover 30.

[0114] Therefore, it is possible to change the way the hair clippers (cutting device) 10 is held while preventing erroneous operation of the dial 21.

[0115] In this manner, the hair clippers (cutting device) 10 according to the present embodiment is a more user-friendly device.

[0116] 23 to 29, the way of holding the hair clippers (cutting device) 10 is not limited to the way shown in Fig. 23 to 29, and the hair clippers (cutting device) 10 can be held in various ways. For example, the hair clippers (cutting device) 10 can be held with both hands, and even when held in this way, the hair clippers (cutting device) 10 can be used while preventing erroneous operation of the dial 21.

[0117] In this embodiment, an anti-slip portion is formed on the cover 30. Specifically, a protrusion 312 is provided on the tip of the top wall 31 on the blade portion 45 side, and this protrusion 312 has an anti-slip function.

[0118] This makes it possible to more reliably prevent fingers from slipping off the cover 30 when using the hair clippers (cutting device) 10, and more reliably prevents erroneous operation of the dial 21 due to fingers slipping off the cover 30.

[0119] It is possible to provide a non-slip function by providing an uneven shape on the surface of the cover 30, or to provide a non-slip function by providing rubber on the surface side of the cover 30. The uneven shape on the surface of the cover 30 can be formed by, for example, embossing or knurling. Examples of the uneven shape include a dot shape and a tip projection shape (projection 312 in this embodiment).

[0120] Furthermore, in this embodiment, the peripheral wall 32 is made wider than the top wall 31 .

[0121] This makes it possible to prevent the exposed area of ​​dial 21 from becoming small as much as possible, while more reliably preventing fingers holding grip portion (holding portion) 11a or fingers placed on cover 30 from coming into contact with dial 21. In other words, it makes it possible to prevent erroneous operation of dial 21 when using clippers (cutting device) 10, while preventing a decrease in operability of dial 21.

[0122] In particular, in this embodiment, the width of the top wall 31 at a position far from the grip portion (holding portion) 11a is narrowed. This makes it possible to reduce the exposed area of ​​the portion of the dial 21 close to the grip portion (holding portion) 11a, while increasing the exposed area of ​​the portion far from the grip portion (holding portion) 11a. In other words, the state of the dial 21 is such that the portion that is relatively likely to be touched by the fingers when the grip portion (holding portion) 11a is held is covered with the cover 30, while the portion that is relatively unlikely to be touched by the fingers is exposed as much as possible. This makes it possible to more reliably prevent the operability of the dial 21 from decreasing, while more reliably preventing erroneous operation of the dial 21 when using the clippers (cutting device) 10.

[0123] In this embodiment, as described above, a predetermined clearance S1 is formed between the tip of the protrusion 2122 of the peripheral wall 212 and the surface 121a of the dial arrangement part 121. Therefore, when the hair clipper (cutting device) 10 is used, hair scraps (cutting scraps) H may enter the dial 21 through the clearance S1.

[0124] In this way, if hair scraps (cuttings) H get into the dial 21, the rotation of the dial 21 may be hindered by the hair scraps (cuttings) H, or the hair scraps (cuttings) H may become entangled in the spring (push-up spring 43) that biases the movable blade 46, causing the cutting height adjustment mechanism 20 to stop functioning.

[0125] Therefore, in this embodiment, it is possible to more reliably prevent hair chips (cutting chips) H from entering the gap formed between the dial 21 and the main body 11.

[0126] Specifically, as shown in FIG. 30, the main body 11 is formed with a rib 1212 that faces a clearance S1 formed between the dial 21 and the main body 11 in the radial direction of the dial 21.

[0127] This makes it possible to more reliably prevent hair scraps (cuttings) H and the like from entering the inside of the dial 21 through the clearance S1 formed between the dial 21 and the main body 11. By preventing hair scraps (cuttings) H and the like from entering the inside of the dial 21 in this way, it is possible to more reliably prevent hair scraps (cuttings) H and the like that have entered the inside of the dial 21 from impeding the rotation of the dial 21 and the adjustment of the cutting height. As a result, it becomes possible to adjust the cutting height by operating the dial 21 for a longer period of time, and it is possible to extend the life of the function of adjusting the cutting height by operating the dial 21.

[0128] In this embodiment, the rib 1212 is provided on the inner circumferential side of the protrusion 2122 , but it is also possible to provide the rib 1212 on the outer circumferential side of the protrusion 2122 .

[0129] In the present embodiment, the rib 1212 has a portion that overlaps with the dial 21 in the radial direction of the dial 21. That is, the rib 1212 is formed such that at least a portion (the tip side) overlaps with the dial 21 (peripheral wall 212) when viewed along the radial direction of the dial 21.

[0130] This creates a structure in which hair scraps (cuttings) H and the like cannot penetrate into the inside of the dial 21 simply by moving the dial 21 in the radial direction, and more reliably prevents hair scraps (cuttings) H and the like from penetrating into the inside of the dial 21 through the clearance S1 formed between the dial 21 and the main body 11.

[0131] The rib 1212 is formed in a circular ring shape centered on the rotation axis C1. That is, the rib 1212 is formed over the entire circumference around the rotation axis C1.

[0132] In this way, even if hair scraps (cuttings) H or the like are present anywhere around the dial 21, the rib 1212 prevents the hair scraps (cuttings) H or the like from entering the inside of the dial 21.

[0133] Furthermore, when the dial 21 is operated with hair scraps (cuttings) H or the like present around the dial 21, the hair scraps (cuttings) H or the like may move around the dial 21 as the dial 21 is turned, but in such a case, no matter where the hair scraps (cuttings) H or the like move to, the rib 1212 can prevent the hair scraps (cuttings) H or the like from entering the inside of the dial 21. In other words, if the rib 1212 is formed around the entire circumference, it is possible to prevent the hair scraps (cuttings) H or the like from entering the inside of the dial 21 even when the dial 21 is turned with hair scraps (cuttings) H or the like present around the dial 21.

[0134] In this way, for example, even if the cutting height is changed by operating the dial 21 while using the hair clippers (cutting device) 10 without brushing off hair scraps (scraps) H adhering to the vicinity of the dial 21, it is possible to prevent hair scraps (scraps) H and the like from entering inside the dial 21.

[0135] In this manner, in this embodiment, the rib 1212 is formed around the entire circumference, so that even when the cutting height is changed at various times, hair scraps (cutting scraps) H and the like can be prevented from entering the inside of the dial 21, thereby further improving the usability of the hair clippers (cutting device) 10.

[0136] In this embodiment, the rib 1212 extends in a direction along the rotation axis C1 of the dial 21.

[0137] This makes the rib 1212 more difficult to climb over, and more reliably prevents hair chips (cutting chips) H and the like from climbing over the rib 1212 and entering the inside of the dial 21.

[0138] In addition, in this embodiment, the dial 21 has a dial side rib 2123. This allows the trajectory of the hair scraps (cuttings) H, etc., when penetrating inside the dial 21, to have a more complex shape, and the penetration path S2 formed between the clearance S1 and the inside of the dial 21 has a structure that is more difficult to move (a structure that is more difficult to penetrate). This makes it possible to more reliably prevent the hair scraps (cuttings) H, etc., from climbing over the rib 1212 and penetrating inside the dial 21.

[0139] Furthermore, in this embodiment, the dial side rib 2123 includes a first dial side rib 21231 located on the outer periphery side and a second dial side rib 21232 located on the inner periphery side. That is, at least one of the rib 1212 and the dial side rib 2123 is formed in multiple in the radial direction of the dial 21.

[0140] This allows the trajectory of the hair scraps (cuttings) H, etc., when penetrating inside the dial 21, to have an even more complex shape. Specifically, a bent penetration path S2 is formed by forming the rib 1212 between the first dial side rib 21231 and the second dial side rib 21232. This makes the penetration path S2 formed from the clearance S1 to the inside of the dial 21 even more difficult to move through (even more difficult to penetrate), so that it is possible to more reliably prevent the hair scraps (cuttings) H, etc., from climbing over the rib 1212 and penetrating inside the dial 21.

[0141] In this embodiment, an example is given in which the dial 21 side has multiple ribs, but the main body 11 side may have multiple ribs, or both the dial 21 side and the main body 11 side may have multiple ribs.

[0142] In this embodiment, the length D2 of the rib 1212 in the direction along the rotation axis C1 of the dial 21 is longer than the length D1 from the rib 1212 to the dial 21 in the radial direction of the dial 21.

[0143] This structure makes it so that hair scraps (cuttings) H and the like cannot get over the rib 1212 unless they are moved at an angle of 45 degrees or more, or multiple hair scraps (cuttings) H and the like are piled up while maintaining an angle of 45 degrees or more. In other words, this structure makes it more difficult for hair scraps (cuttings) H and the like to get over the rib 1212 and enter the inside of the dial 21. This makes it possible to more reliably prevent hair scraps (cuttings) H and the like from getting over the rib 1212 and entering the inside of the dial 21.

[0144] In addition, the radial length D1 is preferably 0.3 mm or more, taking into consideration the operability of the dial 21. However, if the radial length D1 is large, hair chips (cutting chips) H and the like are more likely to enter the inside of the dial 21. Therefore, in this embodiment, the radial length D1 is set to 0.5 mm, which is a size that can prevent the intrusion of hair chips while ensuring operability. Thus, in the case of hair clippers 10 that cut hair, the radial length D1 is preferably set in the range of 0.3 mm or more and 0.5 mm or less.

[0145] In this embodiment, a slope (chamfer) is formed on the outer side of the upper portion of the rib 1212, the height of the outer vertical surface is 0.5 mm, and the overall height of the rib 1212 (the height of the inner vertical surface) is 1.0 mm. That is, the length D2 of the rib 1212 in the direction along the rotation axis C1 of the dial 21 is set to 1.0 mm.

[0146] Thus, in this embodiment, the length D2 of the rib 1212 in the direction along the rotation axis C1 of the dial 21 is made to be twice the radial length D1 of the dial 21 from the clearance S1 formed between the dial 21 and the main body 11 to the rib 1212.

[0147] 31, in this embodiment, an opening S3a is formed on the outer periphery side of the rib 1212 in the main body 11, the opening S3a communicating with a storage space S3 formed in the main body 11 and capable of storing hair scraps (cuttings) H. In this embodiment, the storage space S3 is defined by a partition wall 19 disposed inside the housing 12.

[0148] In this way, hair scraps (cuttings) H and the like that adhere to the vicinity of the dial 21 are actively accommodated in the accommodation space S3, thereby more reliably preventing the hair scraps (cuttings) H and the like from entering the inside of the dial 21.

[0149] In this embodiment, as described above, the hair clippers (cutting device) 10 includes the cover 30 that covers a part of the dial 21 while allowing the dial 21 to rotate. Therefore, the back side of the cover 30 is a part where hair scraps (cuttings) H and the like are likely to accumulate, and if a lot of hair scraps (cuttings) H and the like accumulates on the back side of the cover 30, the hair scraps (cuttings) H and the like present on the back side of the cover 30 are likely to invade the inside of the dial 21.

[0150] Therefore, in this embodiment, the opening S3a is covered by the cover 30 when viewed along the rotation axis C1 of the dial 21.

[0151] In this way, by providing the opening S3a communicating with the storage space S3 on the back side of the cover 30 where hair scraps (cuttings) H tend to accumulate, hair scraps (cuttings) H that have accumulated in places that are difficult to brush off can be stored in the storage space S3. In this embodiment, the slit 1213 formed to attach the cover 30 to the main body 11 is used as the storage space S3.

[0152] In addition, when the hair clippers (cutting device) 10 is used, the cover 30 is pressed with a finger or the like, so that hair scraps (cuttings) H and the like that have accumulated on the back side can be actively stored in the storage space S3. This makes it possible to prevent a large amount of hair scraps (cuttings) H from accumulating on the back side of the cover 30, and more reliably prevents hair scraps (cuttings) H and the like that are present on the back side of the cover 30, where hair scraps (cuttings) H and the like tend to accumulate, from entering the inside of the dial 21.

[0153] If the opening S3a communicating with the accommodation space S3 is covered with a cover 30, the appearance of the hair clipper (cutting device) 10 can be further improved.

[0154] [Actions and Effects] The characteristic configurations of the cutting devices shown in the above-described embodiment and the modified examples thereof and the effects obtained thereby will be described below.

[0155] (Technology 1) The hair clippers (cutting device) 10 shown in the above embodiment and its modified example includes a main body 11 having a grip portion (holding portion) 11a, a fixed blade 47 fixed to the main body 11, and a blade portion 45 having a movable blade 46 capable of sliding back and forth against the fixed blade 47.

[0156] The hair clippers (cutting device) 10 also includes a dial 21 rotatably attached to the main body 11, which is operated to adjust the cutting height, and a cover 30 which covers a portion of the dial 21 while allowing the dial 21 to rotate.

[0157] A dial 21 is attached between a grip portion (holding portion) 11a of the main body 11 and the blade portion 45, and a cover 30 covers the dial 21 on the holding portion side.

[0158] Thus, the hair clippers (cutting device) 10 shown in the above embodiment and its modified example has the dial 21 that is operated to adjust the cutting height. The cover 30 that covers a part of the dial 21 while allowing the dial 21 to rotate covers the grip side of the dial 21.

[0159] In this way, cover 30 can prevent fingers from touching dial 21 when gripping grip portion (holding portion) 11a to use clippers (cutting device) 10. That is, when gripping grip portion (holding portion) 11a to use clippers (cutting device) 10, fingers can be prevented from touching dial 21. As a result, it is possible to more reliably prevent dial 21 from being turned accidentally when clippers (cutting device) 10 is being used.

[0160] In this way, the hair clippers (cutting device) 10 shown in the above embodiment and its modified example can more reliably prevent the dial 21 from being operated erroneously when using the hair clippers (cutting device) 10.

[0161] Furthermore, with the hair clippers (cutting device) 10 shown in the above embodiment and its modified examples, it is possible to prevent erroneous operation of the dial 21 due to fingers touching the dial 21 when using the hair clippers (cutting device) 10, whether the hair clippers (cutting device) 10 is used with fingers placed on the cover 30 (when the cover 30 is used as a finger rest) or when the hair clippers (cutting device) 10 is used without fingers placed on the cover 30.

[0162] Therefore, with the hair clippers (cutting device) 10 shown in the above embodiment and its modified example, even if the method of holding the hair clippers (cutting device) 10 is different, it is possible to more reliably prevent erroneous operation of the dial 21 when using the hair clippers (cutting device) 10.

[0163] Furthermore, if the cover 30 is designed to cover the grip side of the dial 21, it is possible to prevent fingers from coming into contact with the dial 21 when changing the gripping method while using the clippers (cutting device) 10, such as by changing the gripping method to place fingers on the cover 30 when using the clippers without placing fingers on the cover 30.

[0164] Therefore, with the hair clippers (cutting device) 10 shown in the above embodiment and its modified example, it becomes possible to change the gripping method while preventing erroneous operation of the dial 21.

[0165] (Technology 2) In the above (Technology 1), the cover 30 may have a plurality of types of surfaces (for example, the top surface 31a, the peripheral surface 32a, the connecting surface 33a, etc.).

[0166] In this way, even when the hair clippers (cutting device) 10 is held with fingers placed in various places on the cover 30, it is possible to use the hair clippers (cutting device) 10 while preventing erroneous operation of the dial 21. In other words, it is possible to use the hair clippers (cutting device) 10 in a variety of ways while preventing erroneous operation of the dial 21. As a result, it is possible to further improve the usability of the hair clippers (cutting device) 10.

[0167] (Technology 3) In the above (Technology 1) or (Technology 2), the cover 30 may be formed with an anti-slip portion (for example, the protrusion 312 on the tip side, etc.).

[0168] This makes it possible to more reliably prevent fingers from slipping off the cover 30 when using the hair clippers (cutting device) 10. As a result, it is possible to more reliably prevent erroneous operation of the dial 21 due to fingers slipping off the cover 30.

[0169] (Technology 4) In any of the above (Technology 1) to (Technology 3), the cover 30 may include a top wall 31 that covers the top surface 211a of the dial 21, a peripheral wall 32 that covers the peripheral surface 212a on the grip side of the dial 21, and a connecting wall 33 that connects the top wall 31 and the peripheral wall 32. The peripheral wall 32 may be formed to be wider than the top wall 31.

[0170] This makes it possible to more reliably prevent the fingers holding the grip portion (holding portion) 11a or the fingers placed on the cover 30 from coming into contact with the dial 21 while minimizing the reduction in the exposed area of ​​the dial 21. In other words, it is possible to prevent the operability of the dial 21 from decreasing while preventing erroneous operation of the dial 21 when using the hair clippers (cutting device) 10.

[0171] In particular, by narrowing the width of the top wall 31 located far from the grip portion 11a, it is possible to reduce the exposed area of ​​the portion of the dial 21 close to the grip portion 11a while increasing the exposed area of ​​the portion far from the grip portion 11a. That is, the dial 21 can be in a state in which the portion that is relatively likely to be touched by fingers when the grip portion 11a is gripped is covered with the cover 30 while the portion that is relatively unlikely to be touched by fingers is exposed as much as possible. In this way, it is possible to more reliably prevent the operability of the dial 21 from decreasing while more reliably preventing erroneous operation of the dial 21 when using the clippers (cutting device) 10.

[0172] (Technology 5) In the above (Technology 4), the connecting surface 33a of the connecting wall 33 may be a convex curved surface.

[0173] This makes it possible to further reduce the irritation applied to the fingers from the connecting wall 33 when the fingers are placed on the connecting surface 33a of the connecting wall 33 or when the fingers come into contact with the connecting surface 33a of the connecting wall 33. As a result, it becomes possible to use the hair clipper (cutting device) 10 for a longer period of time, and the usability of the hair clipper (cutting device) 10 can be further improved.

[0174] (Technology 6) In addition, in any of the above (Technology 1) to (Technology 5), the cover 30 may have a top wall 31 that covers the top surface 211a of the dial 21, and a protrusion 312 that protrudes in a direction away from the dial 21 may be formed at the tip of the top wall 31 on the blade portion 45 side.

[0175] This makes it possible to more reliably prevent a finger placed on cover 30 from slipping toward blade portion 45, thereby more reliably preventing erroneous operation of dial 21.

[0176] (Technology 7) In the above (Technology 6), the surface 312a of the protruding portion 312 on the side of the grip portion 11a may be a concave curved surface.

[0177] In this way, it becomes possible to use the hair clippers (cutting device) 10 with a finger (e.g., thumb F1) fitting against the surface (concave surface) 312a on the gripping portion 11a side of the protrusion 312, thereby further improving the usability of the hair clippers (cutting device) 10.

[0178] [others] The details of the cutting device according to the present disclosure have been described above, but the present invention is not limited to these descriptions, and it will be obvious to those skilled in the art that various modifications and improvements are possible.

[0179] For example, the present disclosure can be applied to the embodiments in which the configurations shown in the above-mentioned embodiments and their modified examples are modified, replaced, added, omitted, etc. Also, it is possible to combine the components described in the above-mentioned embodiments and their modified examples to form new embodiments.

[0180] In addition, the specifications of the main body, blade, and other details (shape, size, layout, etc.) can be changed as appropriate. [Industrial Applicability]

[0181] As described above, the cutting device disclosed herein can more reliably prevent erroneous operation of the dial during use, and can therefore be used for purposes other than hair, such as cutting various types of body hair, including human and animal hair, and cutting grass and tree branches. [Explanation of symbols]

[0182] 10 Clippers (cutting devices) 11 Main body 11a Grip part (holding part) 20 Mowing height adjustment mechanism 21 Dial 211a Top 212a Circumferential surface 30 Cover 31 Ceiling Wall 31a Top surface (multiple types of surfaces) 32 Peripheral wall 32a Surfaces (multiple types of surfaces) 33 Connecting wall 33a Connected surfaces (multiple types of surfaces) 45 Blade part 46 Movable blade 47 Fixed blade

Claims

1. A main body having a grip portion; A blade unit including a fixed blade fixed to the main body and a movable blade capable of reciprocating and sliding relative to the fixed blade; a dial rotatably attached to the main body and operated to adjust the cutting height; a cover that covers a part of the dial while allowing the dial to rotate; Equipped with The dial is attached to the main body between the grip portion and the blade portion, The cover covers the grip side of the dial. Cutting device.

2. The cover has a plurality of types of surfaces.

2. The cutting device of claim 1.

3. The cover is formed with a non-slip portion.

3. A cutting device according to claim 1 or 2.

4. The cover is A top wall covering a top surface of the dial; a peripheral wall covering a peripheral surface of the dial on the grip portion side; a connecting wall that connects the top wall and the peripheral wall; It is equipped with The peripheral wall is formed to be wider than the top wall.

3. A cutting device according to claim 1 or 2.

5. The connecting surface of the connecting wall is a convex curved surface.

5. The cutting device according to claim 4.

6. the cover includes a top wall that covers a top surface of the dial, A protrusion protruding in a direction away from the dial is formed at a tip of the top wall on the blade side.

3. A cutting device according to claim 1 or 2.

7. The surface of the protrusion on the gripping portion side is a concave curved surface.

7. The cutting device of claim 6.

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