Fixed blade, blade assembly structure, and cutting device

Abstract

To obtain a fixed blade, a blade assembly structure, and a cutting device that can further improve the strength of the fixed blade section. [Solution] The fixed blade 27 is used in a cutting device 1 capable of cutting hair. The fixed blade 27 is equipped with a holding part 28 that can be held in the holding part 21 of the cutting device 1. Furthermore, the fixed blade 27 has a plurality of fixed blade ribs 291 arranged in parallel in one direction and a connecting part 292 that connects the fixed blade ribs 291 to the holding part 28, and is equipped with a fixed blade part 29 that is wider in one direction than the holding part 28. The connecting part 292 is equipped with a connecting body 2921 that is connected to the holding part 28 and an extension part 2922 that is connected to the connecting body 2921 and protrudes in one direction from the holding part 28. A reinforcing part 30 is formed on the extension part 2922.

Description

Technical Field

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[0001] The present disclosure relates to a fixed blade, a blade assembly structure, and a cutting device.

Background Art

[0002] Conventionally, as shown in the following Patent Document 1, there is known a cutting device 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 portion is formed wider than the fixing portion. By doing so, the visibility of the fixed blade portion during use of the cutting device is enhanced, and finishing work such as line cutting can be performed more easily.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Thus, in a cutting device having a wide fixed blade portion, it is preferable to be able to further increase the strength of the fixed blade portion.

[0006] Therefore, an object of the present disclosure is to obtain a fixed blade, a blade assembly structure, and a cutting device capable of further improving the strength of the fixed blade portion.

Means for Solving the Problems

[0007] A fixed blade according to one aspect of the present disclosure is a fixed blade used in a cutting device capable of cutting hair, comprising: a holding portion that can be held in a holding portion of the cutting device; a plurality of fixed blade ribs arranged in parallel in one direction and a connecting portion that connects the fixed blade ribs to the holding portion, and a fixed blade portion formed to be wider in one direction than the holding portion, wherein the connecting portion comprises a connecting body connected to the holding portion and an extension portion connected to the connecting body and protruding in one direction from the holding portion, and a reinforcing portion is formed in the extension portion.

[0008] A blade assembly structure according to one aspect of this disclosure comprises the fixed blade described above.

[0009] A cutting device according to one aspect of this disclosure comprises the above-described blade assembly structure or the above-described fixed blade. [Effects of the Invention]

[0010] According to this disclosure, it is possible to obtain a fixed blade, a blade assembly structure, and a cutting device that can further improve the strength of the fixed blade portion. [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 side view showing an example of a cutting device, disassembled into the main body and the blade assembly structure. [Figure 4] This is a perspective view showing an example of a blade assembly structure. [Figure 5] This is an exploded perspective view showing an example of a blade assembly structure. [Figure 6] This is a side view showing an example of a blade assembly structure. [Figure 7] This is a magnified view of section A in Figure 6. [Figure 8] This is a perspective view from the back of an example of a fixed blade included in a blade assembly structure. [Figure 9]It is a plan view showing an example of a fixed blade included in a blade assembly structure. [Figure 10] It is a sectional view taken along the line B-B of FIG. 9. [Figure 11] It is a plan view showing a first modified example of a fixed blade included in a blade assembly structure. [Figure 12] It is a sectional view taken along the line C-C of FIG. 11. [Figure 13] It is a view showing a modified example of a reinforcing portion formed on a fixed blade. [Figure 14] It is a perspective view showing a second modified example of a fixed blade included in a blade assembly structure. [Figure 15] It is a perspective view of a second modified example of a fixed blade included in a blade assembly structure as viewed from the back side. [Figure 16] It is a plan view showing a second modified example of a fixed blade included in a blade assembly structure. [Figure 17] It is a sectional view taken along the line D-D of FIG. 16.

Embodiments for Carrying Out the Invention

[0012] Hereinafter, embodiments will be described in detail with reference to the drawings. However, a more detailed description may be omitted as necessary. For example, a detailed description of already well-known matters or a redundant description of substantially the same configuration 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] In addition, 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] In addition, in the following embodiments and their modified examples, the reciprocating sliding direction of the movable blade with respect to the fixed blade is defined as the width direction (one direction) for 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) The fixed blade 27 according to this embodiment is used in a cutting device capable of cutting hair, and for example, the fixed blade 27 can be used in the hair trimmer 1 shown in Figures 1 to 3 as a cutting device.

[0018] As shown in Figures 1 to 3, this hair trimmer 1 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 that can be held by hand.

[0019] 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 relative to the fixed blade 27 in the width direction (one direction). The blade block 20 is attached to the main body 10, and the movable blade 26 is reciprocated relative to the fixed blade 27 in the width direction (one direction) using a motor 13, which is housed in the main body 10, as the drive source, thereby cutting the hair by sandwiching 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.

[0020] 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.

[0021] 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).

[0022] In this way, by using a T-shaped (wide type) hair trimmer 1, the sides of the blade portion 25 in the width direction (one direction) are not obscured by the main body portion 10 when the hair trimmer 1 is in use. This improves the visibility of the blade portion 25, making it easier to perform finishing work such as line cutting.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] The blade block 20 has the function of cutting hair and, as shown in Figures 4 to 6, 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.

[0028] Furthermore, as shown in Figure 5, 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.

[0029] The fixing plate 21 is a component 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 extending from the periphery of the fixing plate body 211 in the stacking direction of the movable blade 26 and the fixing blade 27. In the following description, the stacking direction of the movable blade 26 and the fixing blade 27 will be defined as the vertical direction.

[0030] Furthermore, 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 211 by this rib 2111.

[0031] Furthermore, the side wall 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. Alternatively, a hook portion can be provided on the fixing plate 21, and this hook portion can be engaged with the main body portion 10 to detachably attach the blade block 20 to the main body portion 10.

[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. It is also possible to fix the movable blade 26 to the guide plate 22 by heat sealing or the like, or by the hook portion 22a and heat sealing or the like. 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).

[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 2112 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 main body portion 261 to which the guide plate 22 is fixed, and a movable blade portion 262 connected to one end of the main body 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 main body portion 261, and is formed to protrude from both ends of the main body portion 261 in the width direction (one direction). 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 holding portion 28 that can be held by the fixed plate body 211 of the fixed plate 21, and a fixed blade portion 29 connected to one end of the holding portion 28 (the tip side of the blade portion 25). Thus, in this embodiment, the fixed plate body 211 of the fixed plate 21 corresponds to the part of the cutting device that is held.

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

[0038] Furthermore, in this embodiment, as shown in Figure 7, 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 holding section 28, and a pair of extension sections 2922 connected to the connecting body 2921 and protruding from the holding section 28 on both sides in the width direction (one direction).

[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 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 holding portion 28 can be adjusted. In this embodiment, as shown in Figures 8 to 10, 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] As shown in Figures 11 and 12, it is also possible to provide a bent portion 292a only on the connecting body 2921, and to not form a bent portion 292a on the pair of extension portions 2922.

[0042] 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 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 holding portion 28, can be further improved.

[0043] 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 holding portion 28.

[0044] For example, simply increasing the amount of protrusion of the fixed blade portion 29 in the width direction (one direction) relative to the holding 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 protrude as much as possible in the width direction (one direction) relative to the holding 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.

[0045] 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.

[0046] 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.

[0047] 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).

[0048] 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.

[0049] Furthermore, it is preferable that the bent portion 31 be formed on the holding portion 28 side of the connecting portion 292.

[0050] This makes it possible to increase the strength of the area near the connection point between the connecting body 2921 and the holding part 28 (a relatively weak part of the fixed blade part 29), thereby more reliably suppressing deformation of the fixed blade part 29.

[0051] In this case, it is preferable that the thickness of the holding portion 28 and the fixed blade portion 29 be approximately the same. Such a configuration can be obtained by forming the fixed blade 27 using a single plate-like member. Furthermore, by forming the fixed blade 27 having a bent portion 31 formed by bending a single plate-like member, it becomes possible to reduce the amount of material used, thereby reducing costs. In this way, by forming the fixed blade 27 using a single plate-like member, it becomes possible to manufacture the fixed blade 27 more easily while reducing costs.

[0052] Furthermore, by fixing the fixed blade 27, which has the above configuration, 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.

[0053] 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.

[0054] Furthermore, as shown in Figure 13, it is also possible to provide a thickened portion 32 as a reinforcing portion 30 in at least the extended portion 2922 of the connecting portion 292. Doing so will also further improve the strength of the fixed blade portion 29.

[0055] 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.

[0056] Furthermore, as shown in Figures 14 to 17, it is also possible to provide recesses as reinforcing parts 30 in the thickness direction in at least the portion of the connecting part 292 that will become the extended part 2922.

[0057] In the fixed blade 27 shown in Figures 14 to 17, a constricted portion 33, which serves as a recess, is formed in the connecting portion 292 so as to extend along the width direction (one direction). Specifically, a constricted portion 33 is formed in the connecting portion 292, extending from one of a pair of extension portions 2922 through the connecting body 2921 to the other extension portion 2922. Such a constricted portion 33 can be obtained, for example, by performing a drawing process in the thickness direction on the connecting portion 292, which includes a pair of extension portions 2922. It is also possible to form a recess using methods other than drawing.

[0058] This also makes it possible to suppress the curvature or bending of the fixed blade portion 29 in the width direction (one direction), thereby more reliably suppressing 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.

[0059] In addition, while Figures 14 to 17 illustrate a fixed blade 27 in which a bent portion 31 as a reinforcing portion 30 is formed in a location separate from the area where the constricted portion 33 is formed in the connected portion 292 which includes a pair of extended portions 2922, it is also possible to have a configuration in which the bent portion 31 is not provided. Furthermore, the fixed blade 27 can also be configured to include a thickened portion 32 and a constricted portion 33 as reinforcing portions 30.

[0060] (Note) The above description of embodiments discloses the following technologies.

[0061] (Technology 1) A fixed blade used in a cutting device capable of cutting hair, comprising: a holding portion that can be held in a holding portion of the cutting device; a plurality of fixed blade ribs arranged in parallel in one direction and a connecting portion that connects the fixed blade ribs to the holding portion, the fixed blade portion being formed to be wider in one direction than the holding portion, the connecting portion comprising a connecting body connected to the holding portion and an extension portion connected to the connecting body and protruding in one direction from the holding portion, and a reinforcing portion formed in the extension portion.

[0062] Thus, the fixed blade of Technology 1 is used in a cutting device capable of cutting hair. This fixed blade is formed so as to be wider in one direction than the holding part, and the connecting part of the fixed blade comprises a connecting body connected to the holding part and an extension connected to the connecting body that protrudes in one direction from the holding part. A reinforcing part is formed in the extension that protrudes in one direction from the holding part.

[0063] This allows for an increase in the strength of the extension, which protrudes in one direction from the holding portion and is relatively weaker. As a result, the strength of the fixed blade portion, which is formed to be wider in one direction than the holding portion, can be further improved.

[0064] Therefore, by using the fixed blade of technology 1, it becomes possible to further improve the strength of the fixed blade portion.

[0065] Furthermore, by improving the strength of the fixed blade section, it becomes possible to more reliably suppress deformation of the fixed blade section even if the amount of protrusion of the fixed blade section in one direction relative to the holding section is increased. Therefore, it becomes possible to design the fixed blade section to have the largest possible amount of protrusion in one direction relative to the holding section. This improves the visibility of the fixed blade section when using the cutting device, making finishing work such as line cutting easier.

[0066] Thus, by using the fixed blade described in Technology 1, the usability of the cutting device can be further improved.

[0067] (Technology 2) The fixed blade according to Technology 1, wherein the reinforcing portion has a bent portion formed by bending the connecting portion in the thickness direction.

[0068] This method allows for improved strength of the fixed blade section by processing only a single plate-like component, making it easier to manufacture fixed blades.

[0069] (Technology 3) The fixed blade according to Technology 1 or Technology 2, wherein the reinforcing portion is formed along the one direction.

[0070] This prevents the fixed blade from bending or breaking in one direction, thus more reliably preventing deformation of the multiple fixed blade ribs that are arranged in a single direction. As a result, the sliding performance of the movable blade is suppressed, and the hair cutting performance of the cutting device's blades is more reliably prevented from deteriorating.

[0071] (Technical 4) The reinforcing portion is formed over the entire unidirectional portion of the connecting portion, as described in Technical 3.

[0072] This makes it possible to more reliably prevent the fixed blade from bending or breaking in one direction.

[0073] (Technology 5) A fixed blade according to any one of the technologies 1 to 4, wherein the reinforcing portion is formed on the holding portion side of the connecting portion.

[0074] This method increases the strength of the area near the connection point with the holding part of the connecting body, which is a relatively weak part of the fixed blade section, thereby more reliably suppressing deformation of the fixed blade section.

[0075] (Technology 6) A fixed blade according to any one of the technologies from Technology 1 to Technology 5, wherein the thickness of the holding portion and the fixed blade portion are substantially the same.

[0076] This allows for the formation of a fixed blade using a single plate-like component, making it possible to manufacture fixed blades more easily while reducing costs.

[0077] (Technology 7) A fixed blade according to any one of the technologies 1 to 5, wherein the reinforcing portion has a recess that is recessed in the thickness direction.

[0078] This also makes it possible to further improve the strength of the fixed blade section.

[0079] (Technology 8) A blade assembly structure comprising a fixed blade described in any one of the technologies from Technology 1 to Technology 7, and a fixing plate to which the fixed blade is attached and which is fixed to the main body of the cutting device.

[0080] This makes it possible to obtain a blade assembly structure that can further improve the strength of the fixed blade section.

[0081] (Technical 9) A cutting device comprising the blade assembly structure described in Technical 8.

[0082] This makes it possible to obtain a cutting device that can further improve the strength of the fixed blade.

[0083] (Technology 10) A cutting device equipped with a fixed blade as described in any one of the technologies from Technology 1 to Technology 7.

[0084] This makes it possible to obtain a cutting device that can further improve the strength of the fixed blade.

[0085] [others] The contents of the fixed blade, blade assembly structure, and cutting device described herein have been explained above, but it will be obvious to those skilled in the art that the invention is not limited to these descriptions and that various modifications and improvements are possible.

[0086] 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.

[0087] Furthermore, while the above embodiment and its modified examples illustrate a configuration in which one reinforcing portion 30 is formed on the connecting portion 292, it is also possible to form multiple reinforcing portions 30 on the connecting portion 292. In this case, multiple bent portions 31 may be formed, or multiple thickened portions 32 may be formed. It is also possible to form both bent portions 31 and thickened portions 32 on the connecting portion 292.

[0088] Furthermore, while the above embodiment and its modifications illustrate a cutting device such as a hair trimmer 1 in which a blade block (blade assembly structure) 20 having a fixed blade 27 is fixed to the main body 10, it is also possible to create a cutting device such as a hair trimmer in which the fixed blade 27 is directly fixed to the main body 10.

[0089] Furthermore, the cutting device can be any wide-type device, and this disclosure can be applied to various cutting devices such as clippers.

[0090] Furthermore, the specifications of the holding part, fixed blade part, and other details (shape, size, layout, etc.) can be changed as appropriate. [Industrial applicability]

[0091] As described above, the fixed blade, blade assembly structure, and cutting device according to this disclosure can further improve the strength of the fixed blade portion and can therefore be used as various cutting devices, including those for home and commercial use. [Explanation of symbols]

[0092] 1. Hair trimmer (cutting device) 20 Blade Blocks (Blade Assembly Structures) 211 Fixed plate body (held part) 27 Fixed blade 28 Holding part 29 Fixed blade part 291 Fixed blade crosspiece 292 Continuous section 2921 Unit for continuous installation 2922 Extension section 30 Reinforcement section 31 Bending section 32 Thick wall part 33. Aperture section (recess)

Claims

1. A fixed blade used in a cutting device capable of cutting hair, The cutting device includes a holding part that can be held in the part to be held, The fixed blade section has a plurality of fixed blade bars arranged in parallel in one direction and a connecting section that connects the fixed blade bars to the holding section, and is formed to be wider in one direction than the holding section, Equipped with, The connecting portion comprises a connecting body connected to the holding portion, and an extension portion connected to the connecting body and protruding in one direction from the holding portion. A reinforcing portion is formed in the extended portion. Fixed blade.

2. The reinforcing portion has a bent portion that is bent in the thickness direction of the connecting portion. The fixed blade according to claim 1.

3. The reinforcing portion is formed along the one direction. A fixed blade according to claim 1 or claim 2.

4. The reinforcing portion is formed over the entire length in one direction of the connecting portion. The fixed blade according to claim 3.

5. The reinforcing portion is formed on the holding portion side of the connecting portion. A fixed blade according to claim 1 or claim 2.

6. The thickness of the holding portion and the fixed blade portion are approximately the same. A fixed blade according to claim 1 or claim 2.

7. The reinforcing portion has a recess that is recessed in the thickness direction, A fixed blade according to claim 1 or claim 2.

8. A fixed blade according to claim 1 or claim 2, A fixing plate to which the aforementioned fixing blade is attached and which is fixed to the main body of the cutting device, Equipped with, Blade assembly structure.

9. A cutting device comprising the blade assembly structure described in claim 8.

10. A cutting device comprising a fixed blade as described in claim 1 or claim 2.

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