Cutting device

Abstract

To obtain a cutting device that allows the fixed blade to be attached to the main body with improved positional accuracy. [Solution] The cutting device 1 comprises a main body 10, a fixing member 21 fixed to the main body 10, and a blade portion 25 having a fixed blade 27 held by the fixing member 21. The fixing member 21 comprises a holding portion 211 that holds the fixed blade 27 and a fixing portion 212 that is fixed to the main body 10. The fixing member 21 is detachably fixed to the main body 10 by screwing the fixing portion 212 to the main body 10 with a screw 41 while the fixing blade 27 is held in the holding portion 211.

Description

Technical Field

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

Background Art

[0002] Conventionally, as shown in Patent Document 1 below, a cutting device is known that includes a fixed blade and a movable blade, and cuts hair by reciprocally sliding the movable blade with respect to the fixed blade.

[0003] In this Patent Document 1, the fixed blade includes a fixing portion fixed to the main body portion of the cutting device and a fixed blade portion continuously provided to the fixing portion, and the fixed blade is detachably fixed to the main body portion of the cutting device by screwing the fixing portion to the main body portion of the cutting device with a screw.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the above conventional technology, a fixed blade is formed of a single plate-like member, and the plate-like fixed blade is detachably fixed to the main body portion of the cutting device by a screw. Therefore, when the fixing portion is screwed to the main body portion of the cutting device, there is a risk that the fixed blade will tilt due to the screw tightening resistance, and if the fixed blade tilts, it may become impossible to fix the fixed blade to the main body portion of the cutting device in a state where it is in a proper position.

[0006] Thus, in the above conventional technology, there is a problem that it is difficult to improve the positional accuracy of the fixed blade when attaching the fixed blade to the main body portion.

[0007] Therefore, the purpose of this disclosure is to provide a cutting device that can attach a fixed blade to the main body while improving positional accuracy. [Means for solving the problem]

[0008] A cutting device according to one aspect of the present disclosure comprises a main body, a fixing member fixed to the main body, and a blade portion having a fixed blade held by the fixing member, wherein the fixing member comprises a holding portion for holding the fixed blade and a fixing portion fixed to the main body, and the fixing member is detachably fixed to the main body by screwing the fixing portion to the main body with screws while the fixing blade is held in the holding portion.

[0009] A cutting apparatus according to another aspect of the present disclosure comprises a main body and a blade section having a fixed blade fixed to the main body, wherein the fixed blade comprises a fixed blade section having a plurality of fixed blade ribs arranged in parallel in one direction and a fixed section connected to the fixed blade section such that at least a portion of it extends in a direction intersecting the extending direction of the fixed blade section, and the fixed section is removably fixed to the main body by screwing the fixed section to the main body. [Effects of the Invention]

[0010] According to this disclosure, it is possible to obtain a cutting device that can attach a fixed blade to the main body while improving positional accuracy. [Brief explanation of the drawing]

[0011] [Figure 1] This is a front view showing an example of a cutting device. [Figure 2] This is a side view showing an example of a cutting device. [Figure 3] This is a rear view showing an example of a cutting device. [Figure 4] This is a perspective view of an example of a cutting device, seen from the rear. [Figure 5] This is a side view showing an example of a cutting device, disassembled into the main body and the blade assembly structure. [Figure 6]It is a sectional view taken along the line A-A of FIG. 1. [Figure 7] It is a perspective view showing an example of a blade assembly structure. [Figure 8] It is an exploded perspective view showing an example of a blade assembly structure. [Figure 9] It is a perspective view showing a state where a fixed blade is attached to a fixing member. [Figure 10] It is a sectional view taken along the line B-B of FIG. 1. [Figure 11] It is a sectional view taken along the line C-C of FIG. 2. [Figure 12] It is a side view showing an example of a blade assembly structure. [Figure 13] It is a view showing an enlarged view of part D in FIG. 12. [Figure 14] It is a plan view showing an example of a fixed blade included in a blade assembly structure. [Figure 15] It is a sectional view taken along the line E-E of FIG. 14. [Figure 16] It is a perspective view showing a modified example of a fixed blade. [Figure 17] It is a front view showing a modified example of a cutting device. [Figure 18] It is a side view showing a partially disassembled modified example of a cutting device.

Mode for Carrying Out the Invention

[0012] Hereinafter, embodiments will be described in detail with reference to the drawings. However, detailed descriptions that are not necessary may be omitted. For example, detailed descriptions of already well-known matters or duplicate descriptions of substantially the same configurations may be omitted.

[0013] Note that the accompanying drawings and the following description are provided for 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] Also, in the following embodiments and their modified examples, a hair trimmer that cuts hair (an example of hair) of a user or the like is exemplified as a cutting device.

[0015] Furthermore, in the following embodiments and their modifications, the reciprocating sliding direction of the movable blade relative to the fixed blade is defined as the width direction (one direction) for the explanation.

[0016] In the following embodiments and their modifications, when describing the hair trimmer, the side on which the operating switch is located will be defined as the front.

[0017] (Embodiment) As shown in Figures 1 to 5, the hair trimmer (cutting device) 1 according to this embodiment comprises a main body 10 and a blade block (blade assembly structure) 20 that can be detachably attached to the main body 10. The main body 10 has a grip portion 10a formed thereon, which can be held by hand.

[0018] This hair trimmer 1 is a device for processing and styling a person's hair, for example, by cutting the person's hair to a desired length. Specifically, the blade block 20 comprises a fixed metal blade 27 and a movable metal blade 26 that reciprocates in one direction relative to the fixed blade 27. The blade block 20 is mounted on the main body 10, and a motor 13, which serves as a drive unit housed within the main body 10, is used as the drive source to cause the movable blade 26 to reciprocate in one direction relative to the fixed blade 27, thereby cutting the hair by clamping it between the fixed blade 27 and the movable blade 26. For such a motor 13, for example, a rotary motor (such as a DC motor) or a linear motor can be used. If a rotary motor is used, a conversion mechanism will be provided to convert rotational motion into reciprocating motion.

[0019] In this embodiment, the blade portion 25, formed by arranging the movable blade 26 and the fixed blade 27 to face each other, is formed to protrude on both sides in the width direction (one direction) more than the other parts of the blade block 20 (parts other than the blade portion 25). Furthermore, the blade portion 25 is formed to protrude on both sides in the width direction (one direction) more than the part of the main body 10 to which the blade block 20 is mounted. Therefore, when the blade block 20 is mounted on the main body 10, both sides of the blade portion 25 in the width direction (one direction) protrude outward from the other parts of the blade block 20 and the part of the main body 10 to which the blade block 20 is mounted.

[0020] As described above, the hair trimmer 1 according to this embodiment is a T-shaped trimmer (wide-type trimmer) in which the blade portion 25 protrudes from the main body portion 10 on both sides in the width direction (one direction).

[0021] Furthermore, if the cutting device is a T-shaped (wide type) hair trimmer 1, the fact that both sides of the blade 25 in the width direction (one direction) are hidden by the main body 10 when the hair trimmer 1 is in use can be suppressed, thereby improving the visibility of the blade 25 and making it easier to perform finishing work such as line cutting.

[0022] The main body 10 of this hair trimmer 1 is equipped with a housing 11 that forms the outer shell of the main body 10 and is made of a material such as synthetic resin. A switch unit 11a is slidably mounted on the front of the housing 11 so that it is exposed to the outside. Furthermore, a display unit 11b is formed on the front of the housing 11, which allows the user to visually check the power on / off status and other information.

[0023] Furthermore, in this embodiment, the housing 11 is formed by joining together a plurality of divided parts, and a cavity is formed inside the housing 11 formed by joining the divided parts. Various electrical components are then housed in this cavity. These plurality of divided parts can be joined together, for example, by using screws or by fitting the divided parts together.

[0024] A rechargeable battery 12, which serves as the power supply unit, and a motor 13 driven by the rechargeable battery 12 are housed in a cavity formed inside the housing 11. A drive shaft 14, which transmits the driving force of the motor 13 to the blade block 20, is also housed in the cavity formed inside the housing 11. This drive shaft 14 is housed in the cavity inside the housing 11 with its tip protruding towards the blade block 20, and is connected to a guide plate 22 of the blade block 20, which will be described later. It should be noted that the method of driving the blade block 20 is not limited to the method described above, and various methods are possible.

[0025] Furthermore, a control board 15 and the like, which control the power supply to the motor 13 in response to the sliding operation of the switch part 11a exposed to the outside, are housed in the cavity formed inside the housing 11.

[0026] The blade block 20 has the function of cutting hair and, as shown in Figures 7 to 12, is equipped with a blade portion 25 as a hair trimmer blade, formed by arranging a movable blade 26 and a fixed blade 27 opposite each other. This blade portion 25 is configured such that the movable blade rib 2621 of the movable blade 26 slides back and forth in the width direction (one direction) relative to the fixed blade rib 291 of the fixed blade 27.

[0027] Furthermore, as shown in Figure 8, the blade block 20 includes a resin fixing plate 21 on which the blade portion 25 is arranged, and a resin guide plate 22 fixed to the movable blade 26. The blade block 20 also includes a metal push-up spring 23 that presses the movable blade 26 toward the fixed blade 27, and a sliding guide member 24 that guides the sliding of the movable blade 26 relative to the fixed blade 27.

[0028] The fixing plate 21 is a member that is fixed to the main body 10 with the fixing blade 27 fixed in place, and comprises a fixing plate body 211 and a side wall portion 212 that extends from the periphery of the fixing plate body 211 in the stacking direction of the movable blade 26 and the fixing blade 27. Thus, in this embodiment, the fixing plate 21 corresponds to a fixing member that is fixed to the main body 10. Furthermore, the fixing plate body 211 corresponds to a holding portion that holds the fixing blade 27, and the side wall portion 212 corresponds to a fixing portion that is fixed to the main body 10. In the following description, the stacking direction of the movable blade 26 and the fixing blade 27 will be defined as the vertical direction.

[0029] In this embodiment, the fixing plate 21 is removably fixed to the main body 10 by screwing the side wall portion 212, which also serves as a fixing portion, to the main body 10 with a screw 41 while the fixing blade 27 is held in place by the fixing plate body 211, which serves as a holding portion. In this embodiment, as shown in Figure 6, a nut 42 is provided on the main body 10, and the fixing plate 21 is removably fixed to the main body 10 by fastening the screw 41 to this nut 42.

[0030] In this embodiment, the fixing plate body 211 has a rib 2111 through which the fixing blade 27 has a through hole (first connecting mechanism) 281, which will be described later, inserted, and the fixing blade 27 is fixed to the fixing plate body (holding part) 211 by this rib 2111.

[0031] Furthermore, the side wall portion (fixing portion) 212 has an insertion hole 2121 through which a screw 41 for screwing the blade block 20 to the main body portion 10 is inserted. Thus, in this embodiment, the blade block 20 is detachably attached to the main body portion 10 by the screw 41.

[0032] The guide plate 22 is connected to the drive shaft 14 with the blade block 20 mounted on the main body 10, and is a component that reciprocates in the width direction (one direction). The guide plate 22 is equipped with a hook portion 22a into which the movable blade 26 engages, and the movable blade 26 is fixed to the guide plate 22 by this hook portion 22a. In this way, the movable blade 26 slides back and forth in the width direction (one direction) relative to the fixed blade 27 in conjunction with the reciprocating movement of the guide plate 22 in the width direction (one direction). It is also possible to fix the movable blade 26 to the guide plate 22 by the hook portion 22a and a heat seal or the like.

[0033] The push-up spring 23 is a component that presses the movable blade 26 toward the fixed blade 27, thereby ensuring more reliable sliding contact between the movable blade rib 2621 and the fixed blade rib 291. For example, it can be formed from a torsion spring. In this embodiment, the push-up spring 23 comprises a pair of coil portions 23a held by the fixed plate 21, and a connecting portion 23b held by the fixed plate 21 that connects the pair of coil portions 23a. The push-up spring 23 also comprises an arm portion 23c that is connected to the opposite side of each coil portion 23a from the connecting portion 23b and is fixed to the movable blade 26, pressing the movable blade 26 toward the fixed blade 27.

[0034] The sliding guide member 24 is a member that guides the sliding of the movable blade 26 relative to the fixed blade 27, and is attached to a guide groove 2114 formed in the fixed plate body 211 of the fixed plate 21 so as to extend in the width direction (one direction).

[0035] Furthermore, the movable blade 26 comprises a movable blade holding portion 261 to which the guide plate 22 is fixed, and a movable blade portion 262 connected to one end of the movable blade holding portion 261 (the tip end of the blade portion 25). This movable blade portion 262 has a plurality of movable blade ribs 2621 arranged in parallel in the width direction (one direction), and a connecting portion 2622 that connects the movable blade ribs 2621 to the movable blade holding portion 261, and is formed to protrude from both ends in the width direction (one direction) beyond the movable blade holding portion 261. A movable blade groove 2623 is formed between adjacent movable blade ribs 2621 in the width direction (one direction).

[0036] On the other hand, the fixed blade 27 includes a fixed blade holding portion 28 that can be fixed to the fixed plate body 211 of the fixed plate 21, and a fixed blade portion 29 connected to one end of the fixed blade holding portion 28 (the tip end of the blade portion 25). Thus, in this embodiment, the fixed plate body 211 of the fixed plate 21 corresponds to the holding portion that holds the fixed blade holding portion 28 as the part to be held.

[0037] Furthermore, the fixed blade section 29 has a plurality of fixed blade ribs 291 arranged in parallel in the width direction (one direction), and a connecting section 292 that connects the fixed blade ribs 291 to the fixed blade holding section 28, and is formed to protrude from both ends in the width direction (one direction) beyond the fixed blade holding section 28. Fixed blade grooves 293 are formed between adjacent fixed blade ribs 291 in the width direction (one direction).

[0038] Furthermore, in this embodiment, as shown in Figure 13, a bent portion 291a is formed at the tip of the fixed blade rib 291, and the thickness of this bent portion 291a is made substantially uniform. This suppresses the formation of an edge at the tip of the fixed blade rib 291, thereby further reducing irritation to the skin (scalp) during use. It is also possible to configure the fixed blade rib 291 without providing a bent portion 291a at its tip.

[0039] Furthermore, the connecting section 292 comprises a connecting body 2921 connected to the fixed blade holding section 28, and a pair of extension sections 2922 connected to the connecting body 2921 and protruding from both sides in the width direction (one direction) beyond the fixed blade holding section 28.

[0040] Furthermore, in this embodiment, a bent portion 292a is formed at the end of the connecting portion 292 of the fixed blade portion 29 on the side of the fixed blade holding portion 28, extending in the width direction (one direction). By appropriately setting the shape of this bent portion 292a, the vertical position of the fixed blade holding portion 28 can be adjusted. In this embodiment, as shown in Figures 14 and 15, a bent portion 292a is formed on the connecting body 2921 and the pair of extension portions 2922. That is, the bent portion 292a is formed to extend in a straight line in the width direction (one direction) from one end of one extension portion 2922 through the connecting body 2921 to the other end of the other extension portion.

[0041] It is also possible to provide a bent portion 292a only on the connecting main body 2921, and to not form a bent portion 292a on the pair of extension portions 2922.

[0042] Furthermore, in this embodiment, the fixed blade holder 28 is held by the fixed plate body 211 up to the boundary with the fixed blade 29. Specifically, as shown in Figure 9, the entire fixed blade holder 28 is fixed to the fixed plate body 211.

[0043] In this way, by holding the entire portion of the fixed blade 27 that is narrower than the fixed blade portion 29 (the entire fixed blade holding portion 28) on the fixed plate body 211, the fixed blade 27 is more firmly fixed to the fixed plate 21. This makes it possible to more reliably suppress deformation of the fixed blade 27, even when it is a wide-type hair trimmer 1.

[0044] Furthermore, in this embodiment, by providing a reinforcing portion 30 in at least the portion of the connecting portion 2922 that becomes the extended portion 2922, the strength of the extended portion 2922, which is a relatively weak portion because it protrudes in the width direction (one direction) more than the fixed blade holding portion 28, can be increased. In this way, the strength of the fixed blade portion 29, which is formed to be wider in the width direction (one direction) than the fixed blade holding portion 28, can be further improved.

[0045] In this way, by improving the strength of the fixed blade portion 29, it becomes possible to suppress deformation of the fixed blade portion 29 while increasing the amount of protrusion of the fixed blade portion 29 in the width direction (one direction) relative to the fixed blade holding portion 28.

[0046] For example, simply increasing the amount of the fixed blade portion 29 protruding in the width direction (one direction) relative to the fixed blade holder portion 28 may cause the fixed blade portion 29 to deform due to impacts such as dropping. However, by improving the strength of the fixed blade portion 29 as in this embodiment, it becomes possible to more reliably suppress deformation of the fixed blade portion 29 due to impacts such as dropping. Therefore, it becomes possible to make the fixed blade portion 29 protruding as much as possible in the width direction (one direction) relative to the fixed blade holder portion 28. This makes it possible to further improve the visibility of the fixed blade portion 29 (blade portion 25) when using the hair trimmer 1, and makes finishing work such as line cutting easier.

[0047] Such a configuration can be achieved, for example, by forming a bent portion 31 as a reinforcing portion 30 in at least the portion of the connecting portion 292 that becomes the extended portion 2922.

[0048] For example, this can be achieved by making at least the portion of the connecting section 292 that becomes the extended section 2922 bend in the vertical direction along the width direction (one direction). In this way, a bent section 31 extending along the width direction (one direction) is formed in the connecting section 292. Furthermore, since such a configuration can be obtained by processing only a single plate-like member, it becomes possible to manufacture the fixed blade 27 more easily.

[0049] In this case, it is preferable that the bent portion 31 is formed over the entire width direction (one direction) of the connecting portion 292. That is, it is preferable that the bent portion 31 is formed in the connecting portion 292 from one end of one of the pair of extension portions 2922 in the width direction (one direction) through the connecting body 2921 to the other end of the other extension portion 2922 in the width direction (one direction).

[0050] This makes it possible to suppress the curvature or bending of the fixed blade portion 29 in the width direction (one direction), and thus more reliably suppress the deformation of the multiple fixed blade ribs 291 that are formed to be aligned in the width direction (one direction). As a result, it becomes possible to keep the multiple fixed blade ribs 291 aligned on the same plane, which makes it possible to suppress a decrease in the sliding performance of the movable blade 26 relative to the fixed blade 27. In other words, it becomes possible to more reliably suppress a decrease in the hair cutting performance of the blade portion 25 of the hair trimmer 1.

[0051] Furthermore, it is preferable that the bent portion 31 be formed on the side of the fixed blade holding portion 28 in the connecting portion 292.

[0052] This makes it possible to increase the strength of the area near the connection point between the connected main body 2921 and the fixed blade holding part 28 (a relatively weak part of the fixed blade part 29), thereby more reliably suppressing deformation of the fixed blade part 29.

[0053] In this case, it is preferable that the thickness of the fixed blade holding portion 28 and the fixed blade portion 29 be approximately the same. Such a configuration can be obtained by forming a fixed blade 27 having a bent portion 31 formed by bending a single plate-shaped member. Furthermore, by forming the fixed blade 27 using a single plate-shaped member, it becomes possible to reduce the amount of material used, thereby reducing costs. Thus, by forming the fixed blade 27 using a single plate-shaped member, it becomes possible to manufacture the fixed blade 27 more easily while reducing costs.

[0054] Furthermore, by fixing the fixed blade 27, configured in this manner, to the fixed plate body 211 of the fixed plate 21 to form a blade block (blade assembly structure) 20, it is possible to obtain a blade block (blade assembly structure) 20 that can further improve the strength of the fixed blade portion 29.

[0055] Furthermore, by providing a blade block (blade assembly structure) 20 to the hair trimmer (cutting device) 1, it is possible to obtain a blade block (blade assembly structure) 20 that can further improve the strength of the fixed blade section 29.

[0056] In this embodiment, the fixed blade 27 can be attached to the main body 10 with improved positional accuracy.

[0057] Specifically, the fixing plate (fixing member) 21 is detachably fixed to the main body 10 by screwing the side wall portion (fixing portion) 212 to the main body 10 with screws 41 while the fixing blade 27 is held in place by the fixing plate body (holding portion) 211. In other words, the fixing blade 27 is attached to the main body 10 via the fixing plate (fixing member) 21 by screwing the side wall portion (fixing portion) 212 to the main body 10 with screws 41 while the fixing blade 27 is held in place by the fixing plate body (holding portion) 211.

[0058] Thus, in this embodiment, instead of directly screwing the fixed blade 27 to the main body 10 with screws 41, the fixed blade 27 is indirectly attached to the main body 10 using a fixing plate (fixing member) 21, which is a separate component from the fixed blade 27. Furthermore, in this embodiment, as described above, instead of screwing the side wall portion (fixing portion) 212 to the main body 10 with screws 41 in the state shown in Figure 9 (with the fixed blade 27 fixed to the fixing plate 21), the side wall portion (fixing portion) 212 is screwed to the main body 10 with screws 41 after the blade block (blade assembly structure) 20 has been assembled. This also makes it possible to attach the fixed blade 27 to the main body 10 via the fixing plate (fixing member) 21.

[0059] Furthermore, by enabling the fixed blade 27 to be indirectly attached to the main body 10 via the fixing plate (fixing member) 21, the influence of the tightening state of the screws 41 (such as when the screws 41 are tightened too tightly or too loosely, or when the tightening strength of the screws 41 differs on the left and right sides) on the fixed blade 27 is reduced. This prevents the fixed blade 27 from tilting relative to the main body 10 due to screw tightening resistance when the side wall portion (fixing portion) 212 is screwed to the main body 10 alternately on the left and right sides with the screws 41, thus improving the accuracy of the mounting position of the fixed blade 27 to the main body 10.

[0060] Furthermore, as in this embodiment, if the side wall portion (fixing portion) 212, which is a separate part from the fixing plate body (holding portion) 211 in which the fixed blade 27 is held, is screwed to the main body portion 10, it becomes possible to minimize the size of the fixing plate body (holding portion) 211 in which the fixed blade 27 is held. By minimizing the size of the fixing plate body (holding portion) 211, as shown in Figure 10, it becomes possible to make the space S1 formed between the main body portion 10 and the blade block (blade assembly structure) 20 smaller when the fixed blade 27 is attached to the main body portion 10, resulting in a hair trimmer 1 with a structure that makes it difficult for hair clippings to accumulate.

[0061] In this case, the side wall portion (fixing portion) 212 may be connected to the fixing plate body (holding portion) 211 in a direction that intersects with the extending direction of the fixing plate body (holding portion) 211 (a direction along a plane intersecting the vertical direction: one direction and a direction intersecting one direction).

[0062] This makes it possible to set the insertion direction (fastening direction) of the screw 41 to intersect with the direction in which the fixing blade 27 and the main body 10 overlap (up and down direction), thereby more reliably suppressing the tilting of the fixing blade 27 relative to the main body 10 due to screw tightening resistance when the side wall portion (fixing portion) 212 is screwed to the main body 10 alternately on the left and right with the screw 41, and thus further improving the accuracy of the mounting position of the fixing blade 27 relative to the main body 10.

[0063] Furthermore, if the side wall portion (fixing portion) 212 is connected to the fixing plate body (holding portion) 211 in a direction intersecting the extending direction of the fixing plate body (holding portion) 211 (the direction along the plane intersecting the vertical direction: one direction and the direction intersecting one direction), it becomes possible to reduce the size of the fixing plate body (holding portion) 211 in which the fixing blade 27 is held to the minimum necessary while reducing the overall size of the fixing plate (fixing member) 21. This improves the visibility around the blade portion 25, making it easier to perform finishing work such as line cutting. In this way, by reducing the size of the fixing plate body (holding portion) 211 in which the fixing blade 27 is held to the minimum necessary while reducing the overall size of the fixing plate (fixing member) 21, it becomes possible to further improve work efficiency.

[0064] Furthermore, if the side wall portion (fixing portion) 212 is connected to the fixing plate body (holding portion) 211 in a direction that intersects with the extending direction of the fixing plate body (holding portion) 211 (the direction along the plane intersecting the vertical direction: one direction and the direction intersecting one direction), the surface that comes into contact with the user's skin (lower surface 2112: the surface opposite to the side on which the fixing blade 27 of the holding portion 211 is held) can be made smooth over its entire surface. As a result, the skin contact when using the hair trimmer 1 is improved, and the usability of the hair trimmer 1 can be further enhanced. In addition, the screw 41 is less likely to come into contact with the skin when using the hair trimmer 1, thus more reliably preventing discomfort to the user when using the hair trimmer 1. In this embodiment, multiple grooves 21121 extending in the front-rear direction are arranged in parallel in the width direction on the lower surface 2112 of the fixing plate body (holding portion) 211. This improves the feel of the underside 2112 against the skin when using the hair trimmer 1.

[0065] Furthermore, in this embodiment, as shown in Figures 12 and 13, a substantially flat surface is formed between the inclined surface 2113, which is part of the lower surface (outer surface of the holding portion) 2112 of the fixing plate body 211, and the lower surface (outer surface) 29a of the fixing blade portion 29. That is, the lower surface (outer surface of the holding portion) 2112 of the fixing plate body 211 is formed such that at least a portion of it forms a substantially flat surface with the lower surface (outer surface) 29a of the fixing blade portion 29.

[0066] This ensures that the entire surface that comes into contact with the user's skin is smooth. Furthermore, it improves the feel against the skin when using the hair trimmer 1, thereby enhancing its usability.

[0067] Furthermore, the fixed blade 27 and the fixed plate (fixing member) 21 may be made of different materials. In this case, the fixed blade 27 can be made of a metal such as stainless steel, while the fixed plate (fixing member) 21 can be made of resin or a metal different from that of the fixed blade 27 (for example, aluminum). When the fixed plate (fixing member) 21 is made of resin, the feel against the skin and the smoothness of the surface that comes into contact with the user's skin can be improved, thereby improving the usability of the hair trimmer 1. Also, when the fixed plate (fixing member) 21 is made of resin, the dimensional error is smaller than when it is made of metal, so the accuracy of the mounting position of the fixed blade 27 to the main body 10 can be improved. Moreover, when the fixed plate (fixing member) 21 is made of resin, it can be manufactured more easily.

[0068] Furthermore, if the fixing plate (fixing member) 21 is formed from a different metal than the fixing blade 27, the heat dissipation of heat generated when the blade portion 25 slides can be further improved.

[0069] Furthermore, when the side wall portion (fixing portion) 212 is screwed to the main body portion 10, the head 411 of the screw 41 may be located further back than the outer surface 212a of the side wall portion (fixing portion) 212.

[0070] This prevents the screw 41 from coming into contact with the skin or other body parts when the hair trimmer 1 is in use, thus more reliably preventing discomfort to the user when using the hair trimmer 1. Furthermore, repeated fixing of the fixing plate (fixing member) 21 to the main body 10 and removal of the fixing plate (fixing member) 21 from the main body 10 may cause the head 411 of the screw 41 to deform. However, even if the head 411 of the screw 41 deforms in this way, it is prevented from protruding from the outer surface 212a of the side wall (fixing part) 212, thus more reliably preventing hands or other body parts from coming into contact with the deformed head 411. As a result, the hair trimmer 1 can be used more safely. In this embodiment, the outer surface 212a of the side wall (fixing part) 212 is a curved surface that is recessed inward when viewed from the side. This design ensures that the shape of the outer surface 212a is such that it is easy to rest your fingers on it when you hold the hair trimmer 1 near the blade block 20 with your hand.

[0071] Furthermore, the main body portion may be provided with a main body-side positioning portion 17. In addition, the fixing plate (fixing member) 21 may be provided with a fixing member-side positioning portion 213 that can contact the main body-side positioning portion 17 with a surface contact, thereby suppressing misalignment of the fixing plate (fixing member) 21 relative to the main body portion 10, while the fixing plate (fixing member) 21 is screwed to the main body portion 10 with screws 41.

[0072] In this embodiment, as shown in Figure 10, the fixing plate (fixing member) 21 is secured to the main body 10 with screws 41, and the surfaces on both sides of the main body side positioning portion 17 in the front-rear direction (a direction intersecting the width direction and the up-down direction) (first main body side positioning surface 171) are made to make surface contact with the surfaces on both sides of the fixing member side positioning portion 213 in the front-rear direction (a direction intersecting the width direction and the up-down direction) (first fixing member side positioning surface 2131). This prevents the fixing plate (fixing member) 21 from shifting position in the front-rear direction relative to the main body 10.

[0073] Furthermore, as shown in Figure 11, with the fixing plate (fixing member) 21 secured to the main body 10 by screws 41, the two surfaces (second main body side positioning surface 172) formed on the main body side positioning portion 17 in the width direction (one direction) are in surface contact with the two surfaces (second fixing member side positioning surface 2132) formed on the fixing member side positioning portion 213 in the width direction (one direction). This prevents the fixing plate (fixing member) 21 from shifting position in the width direction relative to the main body 10.

[0074] This makes it possible to position the fixing blade 27 more precisely relative to the main body 10 when fastening the side wall portion (fixing portion) 212 to the main body portion 10 with screws 41, thereby improving the accuracy of the mounting position of the fixing blade 27 relative to the main body portion 10.

[0075] Furthermore, when the side wall portion (fixing portion) 212 is screwed to the main body portion 10 with screws 41, misalignment of the fixing blade 27 relative to the main body portion 10 is suppressed, making it easier to attach the fixing blade 27 to the main body portion 10. In addition, the reproducibility when attaching the fixing blade 27 to the main body portion 10 after removing it from the main body portion 10 is also improved.

[0076] It is also possible to form the hair trimmer 1 by screwing the fixed blade 27 shown in Figure 16 to the main body 10 with a screw 41.

[0077] The fixed blade 27 shown in Figure 16 comprises a fixed blade section 29 having a plurality of fixed blade ribs 291 arranged in parallel in the width direction (one direction), and a side wall section (fixed section) 28A connected to the fixed blade section 29, with at least a portion of it extending in a direction intersecting the extending direction of the fixed blade section 29 (a direction along a plane intersecting the vertical direction: one direction and a direction intersecting one direction). In the fixed blade 27 shown in Figure 16, the fixed blade section 29 is provided with a connecting section 292 and a fixed blade rib connecting section 294, and the fixed blade ribs 291 are connected to the fixed blade rib connecting section 294 via the connecting section 292. In addition, the side wall section (fixed section) 28A is connected to the periphery of the fixed blade rib connecting section 294. In other words, the fixed blade 27 comprises a fixed blade section 29 having a plurality of fixed blade bars 291 arranged in parallel in the width direction (one direction), and a fixed blade bar connecting section 294 to which the fixed blade bars 291 are connected via a connecting section 292, and a side wall section (fixing section) 28A connected to the fixed blade bar connecting section 294 in a direction (up and down direction) that intersects with the extending direction of the fixed blade bar connecting section 294, with at least a portion of it extending in that direction.

[0078] Furthermore, an insertion hole 281A is formed in the portion of the side wall portion (fixing portion) 28A where the outer surface 28aA is formed, through which a screw 41 is inserted. By screwing the side wall portion (fixing portion) 28A to the main body portion 10, the side wall portion (fixing portion) 28A is removably fixed to the main body portion 10.

[0079] This method prevents the fixed blade 27 from tilting relative to the main body 10 due to screw tightening resistance, even when the fixed blade 27 is directly attached to the main body 10 with screws 41 alternately on the left and right sides. As a result, the accuracy of the mounting position of the fixed blade 27 (fixed blade portion 29) relative to the main body 10 can be further improved. Therefore, even when using the fixed blade 27 shown in Figure 16, the fixed blade 27 can be attached to the main body 10 with improved positional accuracy.

[0080] Such a fixed blade 27 can be manufactured by solidifying and molding powdered metal material, die-casting, or by cutting a pre-prepared thick plate material.

[0081] Furthermore, as shown in Figures 17 and 18, this disclosure can also be applied to a clipper 1B as a cutting device.

[0082] In other words, it is also possible to configure the clippers 1B so that the blade block (blade assembly structure) 20 shown in the above embodiment is screwed to the main body 10 using screws 41.

[0083] Thus, by applying this disclosure to a cutting device in which the width of the blade portion 25 and the width of the main body portion are approximately equal, the same effects and advantages as those of the hair trimmer 1 shown in the above embodiment can be achieved. It is also possible to use the fixed blade 27 shown in Figure 16.

[0084] (Note) The above description of embodiments discloses the following technologies.

[0085] (Technical 1) A cutting device comprising a main body, a fixing member fixed to the main body, and a blade portion having a fixed blade held by the fixing member, wherein the fixing member comprises a holding portion for holding the fixed blade and a fixing portion fixed to the main body, and the fixing member is detachably fixed to the main body by screwing the fixing portion to the main body with screws while the fixing blade is held by the holding portion.

[0086] Thus, in the cutting device of Technology 1, the fixed blade is held in the holding part, and the holding part is screwed to the main body with screws, thereby attaching the fixed blade to the main body via a fixing member. This prevents the fixed blade from tilting relative to the main body due to screw tightening resistance when the fixing part is screwed to the main body, thus improving the accuracy of the mounting position of the fixed blade to the main body.

[0087] Thus, with the cutting device of Technology 1, the fixed blade can be attached to the main body with improved positional accuracy.

[0088] Furthermore, by screwing the fixed blade holder, which is a separate part from the holder that holds the fixed blade, to the main body, it becomes possible to minimize the size of the holder that holds the fixed blade. As a result, the gap formed between the main body and the blade can be made smaller, resulting in a structure that is less prone to hair accumulation.

[0089] (Technical 2) The cutting device according to Technical 1, wherein the fixing portion is connected to the holding portion in a direction intersecting the extending direction of the holding portion.

[0090] In this way, by connecting the fixing part to the holding part in a direction that intersects the extending direction of the holding part that holds the fixed blade, it becomes possible to set the screw insertion direction (fastening direction) to intersect the direction in which the fixed blade and the main body overlap. This makes it possible to more reliably suppress the tilting of the fixed blade relative to the main body due to screw tightening resistance when fastening the fixing part to the main body with screws. As a result, the accuracy of the mounting position of the fixed blade relative to the main body can be further improved.

[0091] Furthermore, by connecting the fixing part to the holding part in a direction intersecting the extension direction of the holding part that holds the fixed blade, it becomes possible to reduce the size of the holding part that holds the fixed blade while minimizing the overall size of the fixing member. As a result, the visibility around the blade can be improved, making it easier to perform finishing work such as line cutting.

[0092] Furthermore, if the fixing part is connected to the holding part in a direction intersecting the extension direction of the holding part that holds the fixed blade, the surface that comes into contact with the user's skin (the surface of the holding part opposite to the side that holds the fixed blade) can be made smooth throughout. As a result, the feel against the skin when using the cutting device is improved, and the usability of the cutting device is further enhanced. In addition, since it is suppressed that screws come into contact with the skin when using the cutting device, discomfort to the user when using the cutting device can be more reliably suppressed.

[0093] (Technology 3) The cutting apparatus according to Technology 1 or Technology 2, wherein the fixed blade and the fixed member are formed of different materials.

[0094] This allows, for example, the fixed blade to be made of metal while the fixing member is made of resin or a different metal from the fixed blade. Furthermore, if the fixing member is made of resin, the feel against the user's skin and the smoothness of the surface that comes into contact with the user can be improved, thereby improving the usability of the cutting device. Also, since the dimensional error is smaller when the fixing member is made of resin than when it is made of metal, the accuracy of the mounting position of the fixed blade to the main body can be improved. Moreover, when the fixing member is made of resin, the fixing member can be manufactured more easily.

[0095] Furthermore, by forming the blade from a different metal than the fixed blade, the heat dissipation of heat generated during the sliding motion of the blade can be further improved.

[0096] (Technology 4) A cutting device according to any one of the technologies 1 to 3, wherein the fixing part is screwed to the main body, and the head of the screw is located further back than the outer surface of the fixing part.

[0097] This design prevents the screws from coming into contact with skin or other body parts during the use of the cutting device, thus more effectively preventing discomfort to the user. Furthermore, while repeated attachment and detachment of the fixing member to the main body may cause the screw head to deform, this design prevents the screw head from protruding from the outer surface of the fixing part, thus more effectively preventing hands or other body parts from touching the deformed head. As a result, the cutting device can be used more safely.

[0098] (Technology 5) A cutting device according to any one of the technologies 1 to 4, wherein the main body portion has a main body portion side positioning portion formed thereon, and the fixing member has a fixing member portion side positioning portion formed thereon that can contact the main body portion side positioning portion with a surface to suppress displacement of the fixing member relative to the main body portion, in a state in which the fixing member can be screwed to the main body portion by the screws.

[0099] This allows for a more precise positioning of the fixed blade relative to the main body when screwing the fixed part to the main body, thereby improving the accuracy of the mounting position of the fixed blade to the main body.

[0100] Furthermore, when screwing the fixing part to the main body, misalignment of the fixing blade relative to the main body is suppressed, making it easier to attach the fixing blade to the main body. In addition, the reproducibility of reattaching the fixing blade to the main body after removing it is also improved.

[0101] (Technology 6) The cutting device according to any one of the technologies 1 to 5, wherein the fixed blade has a held portion that is held by the holding portion, a plurality of fixed blade bars arranged in parallel in one direction and a connecting portion that connects the fixed blade bars to the held portion, and the fixed blade portion is formed to be wider in one direction than the held portion, and the connecting portion has a connecting body connected to the held portion and an extension portion connected to the connecting body that protrudes in one direction from the held portion.

[0102] Thus, the cutting device of Technology 6 is a wide-type cutting device in which the fixed blade protrudes in one direction relative to the main body. With a wide-type cutting device, the side of the fixed blade on one side is less likely to be obscured by the main body when the cutting device is in use, thus improving the visibility of the fixed blade and making it easier to perform finishing work such as line cutting.

[0103] (Technical 7) The cutting apparatus according to Technical 6, wherein the portion of the held portion up to the boundary with the fixed blade portion is held by the holding portion.

[0104] Thus, in the cutting device of Technology 7, the portion of the part to be held up to the boundary with the fixed blade portion is held by the holding portion. This makes it possible to hold the entire portion of the fixed blade that is narrower than the fixed blade portion (the entire part to be held) by the holding portion. As a result, the fixed blade can be fixed more firmly to the fixing member, and even in the case of a wide-type cutting device, deformation of the fixed blade can be suppressed more reliably.

[0105] (Technology 8) The cutting device according to any one of the technologies 1 to 7, wherein the fixed blade comprises a held portion that is held by the holding portion, a plurality of fixed blade bars arranged in parallel in one direction and a connecting portion that connects the fixed blade bars to the held portion, and a fixed blade portion formed to be wider in one direction than the held portion, and the outer surface of the holding portion is formed such that at least a part of it forms a substantially flat surface with the outer surface of the fixed blade portion.

[0106] Thus, in the cutting device of Technology 8, a substantially flat surface is formed between at least a portion of the outer surface of the holding part and the outer surface of the fixed blade part. This makes the entire surface that comes into contact with the user's skin smooth, improving the feel against the skin when using the cutting device and further enhancing the usability of the cutting device.

[0107] (Technical 9) A cutting device comprising a main body and a blade portion having a fixed blade fixed to the main body, wherein the fixed blade comprises a fixed blade portion having a plurality of fixed blade ribs arranged in parallel in one direction and a fixed portion connected to the fixed blade portion such that at least a portion of it extends in a direction intersecting the extending direction of the fixed blade portion, and the fixed portion is removably fixed to the main body by screwing the fixed portion to the main body.

[0108] Thus, in the cutting device of Technology 9, the fixed blade comprises a fixed blade section having a plurality of fixed blade ribs arranged in parallel in one direction, and a fixed section connected to the fixed blade section, with at least a portion extending in a direction intersecting the extending direction of the fixed blade section. The fixed section is then screwed to the main body so that it can be detachably fixed to the main body. This prevents the fixed section (fixed blade section) from tilting relative to the main body due to screw tightening resistance, even when the fixed blade is directly screwed to the main body, thus improving the accuracy of the mounting position of the fixed blade to the main body. Therefore, even with the cutting device of Technology 9, the fixed blade can be attached to the main body with improved positional accuracy.

[0109] [others] The contents of the cutting device described herein have been explained above, but it will be obvious to those skilled in the art that the device is not limited to these descriptions and that various modifications and improvements are possible.

[0110] For example, this disclosure can be applied to embodiments in which the configurations shown in the above embodiments and their variations are modified, replaced, added, or omitted. Furthermore, it is possible to combine the components described in the above embodiments and their variations to create new embodiments.

[0111] Furthermore, the specifications of the fixing components, fixing blades, and other details (shape, size, layout, etc.) can be changed as appropriate. [Industrial applicability]

[0112] As described above, the cutting device according to this disclosure allows for the attachment of a fixed blade to the main body with improved positional accuracy, and can therefore be used as a cutting device for various purposes, including household and commercial use. [Explanation of symbols]

[0113] 1. Hair trimmer (cutting device) 1B Hair clippers (cutting device) 10 Main body 17 Positioning part on the main body side 21 Fixing plate (fixing member) 211 Fixed plate body (holding part) 2113 Inclined surface (at least a portion of the outer surface) 212 Side wall part (fixed part) 212a External surface 213 Fixing member side positioning part 25 Blade 27 Fixed blade 28 Fixed blade holding part (held part) 28A Side wall part (fixed part) 28aA outer surface 29 Fixed blade part 29a Bottom surface (outer surface) 291 Fixed blade crosspiece 292 Continuous section 2921 Unit for continuous installation 2922 Extension section 41 screws 411 Head

Claims

1. The main body and A fixing member fixed to the main body, A blade portion having a fixed blade held by the aforementioned fixing member, Equipped with, The aforementioned fixing member is The holding portion that holds the fixed blade, A fixing part that is fixed to the main body, Equipped with, The fixing member is detachably fixed to the main body by screwing the fixing part to the main body with screws while the fixing blade is held in the holding part. Cutting device.

2. The fixing portion is connected to the holding portion in a direction that intersects the extending direction of the holding portion. The cutting device according to claim 1.

3. The fixing blade and the fixing member are formed from different materials. A cutting device according to claim 1 or claim 2.

4. With the fixing part screwed to the main body, the head of the screw is located further back than the outer surface of the fixing part. A cutting device according to claim 1 or claim 2.

5. The main body portion is provided with a main body side positioning portion, The fixing member has a fixing member-side positioning portion that, when the fixing member is screwed to the main body by the screws, makes surface contact with the main body-side positioning portion to suppress misalignment of the fixing member relative to the main body. A cutting device according to claim 1 or claim 2.

6. The aforementioned fixed blade is The part to be held is held by the holding part, The fixed blade portion has a plurality of fixed blade bars arranged in parallel in one direction and a connecting portion that connects the fixed blade bars to the held portion, and is formed to be wider in one direction than the held portion, It is equipped with, The aforementioned connecting section is, A connecting body connected to the part to be held, An extension portion connected to the aforementioned connected body and protruding in one direction from the portion to be held, It is equipped with A cutting device according to claim 1 or claim 2.

7. The portion of the held portion is held by the holding portion up to the boundary with the fixed blade portion. The cutting apparatus according to claim 6.

8. The aforementioned fixed blade is The part to be held is held by the holding part, The fixed blade portion has a plurality of fixed blade bars arranged in parallel in one direction and a connecting portion that connects the fixed blade bars to the held portion, and is formed to be wider in one direction than the held portion, It is equipped with, The outer surface of the holding portion is formed such that at least a portion of it forms a substantially flat surface with the outer surface of the fixed blade portion. A cutting device according to claim 1 or claim 2.

9. The main body and A blade portion having a fixed blade fixed to the main body, Equipped with, The aforementioned fixed blade is A fixed blade section having multiple fixed blade bars arranged in a row in one direction, A fixing portion is connected to the fixed blade portion in such a way that at least a portion of it extends in a direction intersecting the extending direction of the fixed blade portion, Equipped with, The fixing part is screwed to the main body, thereby the fixing part is detachably fixed to the main body. Cutting device.

Images