Hair clipper and motor module used in hair clipper

Abstract

The invention provides a hair clipper capable of realizing mute in use and a motor module used in the hair clipper. The hair clipper is provided with a rotating motor (6), the rotating motor (6) is provided with a motor driving part (61) and a rotating shaft (62) extending in a first direction, the motor driving part (61) is provided with a bearing part (612), and the bearing part (612) supports the rotating shaft (62) in the state that a gap (63) is formed between the bearing part (612) and a peripheral surface (621) of the rotating shaft (62). Furthermore, the hair clipper is provided with: a shaft contact section (72) that presses the rotating shaft (62) in at least one direction among the directions intersecting the first direction, and restricts shaft shake during rotation of the rotating shaft (62) caused by the gap (63) while allowing rotation of the rotating shaft (62); and a support section (71) that supports the shaft contact section (72).

Description

Technical Field

[0001] The invention relates to a hair clipper and a motor module used in the hair clipper. Background Art

[0002] Conventionally, as a hair clipper, as disclosed in Patent Document 1, there is known a hair clipper including a fixed blade and a movable blade capable of reciprocating linear motion, the movable blade being in sliding contact with the fixed blade.

[0003] In Patent Document 1, a rotary electric motor is used as a driving source for causing the movable blade to reciprocate linearly, and the output shaft of the rotary electric motor is connected to the movable blade via a conversion mechanism. In this way, the movable blade is caused to reciprocate linearly as the output shaft rotates.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Laid-Open No. 05-317537 Summary of the invention

[0007] Problem that the invention aims to solve

[0008] In this manner, in a hair clipper of the type that uses a rotary motor to linearly reciprocate a movable blade, it is desirable to achieve quietness during use.

[0009] Therefore, an object of the present invention is to provide a hair clipper and a motor module used in the hair clipper that can achieve quietness during use.

[0010] Solutions for solving problems

[0011] A technical solution of the present invention provides a hair clipper, wherein the hair clipper comprises: a rotary motor having a rotary shaft extending in a first direction and a motor driving unit capable of driving the rotary shaft to rotate; a conversion mechanism connected to the rotary shaft and capable of converting the rotary motion of the rotary shaft into a reciprocating linear motion; a movable blade connected to the conversion mechanism and capable of reciprocating linear motion; a fixed blade, the movable blade being capable of sliding contact with the fixed blade; a bearing portion provided on the motor driving unit, the bearing portion supporting the rotary shaft in a state where a gap is provided between the bearing portion and the peripheral surface of the rotary shaft; a shaft abutment portion pressing the rotary shaft in at least one direction intersecting the first direction, limiting the shaft jitter of the rotary shaft during rotation caused by the gap while allowing the rotation of the rotary shaft; and a support portion supporting the shaft abutment portion.

[0012] A technical solution of the present invention provides a motor module, wherein the motor module is used in the above-mentioned hair clipper.

[0013] Effects of the Invention

[0014] According to the present invention, a hair clipper capable of achieving quietness during use and a motor module used in the hair clipper can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view which shows an example of the hair clipper of embodiment.

[0016] Figure 2 It is a cross-sectional view showing an example of the hair clipper according to the embodiment.

[0017] Figure 3 It is an exploded perspective view showing an example of the hair clipper according to the embodiment.

[0018] Figure 4 1 is a diagram showing an example of a motor module according to an embodiment, and is an enlarged perspective view showing a state before a motor module member and a rotary electric machine are integrated.

[0019] Figure 5 1 is a diagram showing an example of a motor module according to an embodiment, and is an enlarged perspective view showing a state in which a motor module member and a rotary electric machine are integrated.

[0020] Figure 6 This is a diagram showing an example of a motor module according to an embodiment, and is an enlarged front view showing a state in which a motor module member and a rotary electric machine are integrated.

[0021] Figure 7 1 is a diagram showing an example of a motor module according to an embodiment, and is a plan view showing a state in which a motor module member and a rotary electric machine are integrated.

[0022] Figure 8 1 is a diagram showing an example of a motor module according to an embodiment, and is an enlarged cross-sectional view showing a state before a motor module member and a rotary electric machine are integrated.

[0023] Fig. 9 1 is a diagram showing an example of a motor module according to an embodiment, and is an enlarged cross-sectional view showing a state in which a motor module member and a rotary electric machine are integrated.

[0024] Fig.10 It is a perspective view showing an example of a motor module member according to the embodiment.

[0025] Fig.11 This is a diagram showing a first modified example of the motor module according to the embodiment, and is an enlarged perspective view showing a state in which a motor module member and a rotary electric machine are integrated.

[0026] Fig.12 This is a diagram showing a second modification of the motor module of the embodiment, and is an enlarged perspective view showing a state in which a motor module member and a rotary electric machine are integrated.

[0027] Fig.13 This is a diagram showing a third modified example of the motor module according to the embodiment, and is an enlarged perspective view showing a state before the motor module member and the rotary electric machine are integrated.

[0028] Fig.14 This is a diagram showing a third modified example of the motor module according to the embodiment, and is an enlarged perspective view showing a state in which a motor module member and a rotary electric machine are integrated.

[0029] Fig.15 It is a diagram showing a modified example of the hair clipper according to the embodiment, and is an enlarged perspective view showing a state in which the rotary motor is assembled to the second split case.

[0030] Description of Reference Numerals

[0031] 1. Hair clipper; 2. Main body; 2a. Grip; 3. Blade module; 31. Fixed blade module; 311. Fixed plate; 312. Fixed plate; 3121. Main body; 3122. Fixed blade; 32. Movable blade module; 321. Guide plate; 3211. Engaging recess; 322. Movable plate; 3221. Main body; 3222. Movable blade; 33. Push-up spring; 331. Coil; 332. Arm; 4. Housing; 41. First split housing; 411. Hook; 412, annular rib; 413, through hole; 414, through hole; 42, second split housing; 421, locking portion; 422, annular rib; 423, recess; 43, switch button; 44, display portion; 45, screw concealing cover; 46, plug cover; 5, motor module; 6, rotary motor; 61, motor drive portion; 611, motor body; 6111, motor housing; 61111, top wall; 61112, peripheral wall; 61113, bottom wall; 6111a, fixing hole; 6112 , terminal; 612, bearing portion; 6121, inner side; 62, rotating shaft; 621, peripheral surface; 63, gap; 7, motor module member; 71, main body; 711, mounting portion; 7111, annular portion; 71111, insertion hole; 712, fixing protrusion; 72, shaft contact portion; 721, beam portion; 7211, sliding contact surface; 72111, recess; 73, C-shaped portion; 73a, inner surface; 731, base; 732, arm portion; 733, notch; 7321, top end; 8, eccentric cam; 81, cam body; 82, eccentric shaft; 91, battery; 92, battery holding platform; 921, battery holding part; 922, substrate holding part; 923, electrode terminal; 93, circuit substrate; 931, switch element; 932, LED; 94, LED cover; 941, light guide part; 95, light guide part; 951, plug base; 952, plug terminal; 9521, top end; 96, blade stop spring; 971, screw; 972, screw; 973, screw. DETAILED DESCRIPTION

[0032] Hereinafter, the embodiments will be described in detail with reference to the accompanying drawings. However, a detailed description beyond the necessary level may be omitted. For example, a detailed description of a widely known matter or a repeated description of a substantially identical structure may be omitted.

[0033] It should be noted that the drawings and the following description are provided to enable those skilled in the art to fully understand the present invention, and are not intended to limit the subject matter described in the claims.

[0034] In addition, in the following embodiments and their variations, the direction in which the rotating shaft of the rotating motor extends (i.e., the axial direction of the rotating shaft) is referred to as the Z direction, the direction in which the movable blade reciprocates in a straight line is referred to as the Y direction, and the direction intersecting (e.g., orthogonal) with both the Y direction and the Z direction is referred to as the X direction. In this specification, the Z direction is also referred to as the first direction or the up-and-down direction. In this specification, the Y direction is also referred to as the width direction or the second direction. In this specification, the X direction is also referred to as the front-to-back direction or the third direction.

[0035] Furthermore, the description will be given assuming that the up-down direction of the hair clipper is defined in a state where the tip of the rotating shaft is directed upward.

[0036] In the following embodiment and its modified example, the description is made by defining the side where the switch button is provided as the front side of the hair clipper (that is, the front side in the X direction).

[0037] (Implementation Method)

[0038] Figure 1 It is a front view which shows an example of the hair clipper 1 which concerns on embodiment. Figure 2 It is a cross-sectional view showing an example of the hair clipper 1 according to the embodiment. Figure 3 1 is an exploded perspective view showing an example of the hair clipper 1 according to the embodiment. Figure 1 to Figure 3 As shown, the hair clipper 1 of this embodiment includes a main body 2 and a blade module 3 detachably mounted on the main body 2. In this embodiment, the main body 2 is elongated, and a grip 2a that can be gripped by hand is formed on the main body 2.

[0039] The hair clipper 1 is, for example, a device for processing or arranging the hair of a user or the like by trimming the hair of the user or the like to a desired length, and the blade module 3 includes a metal fixed blade 3122 and a metal movable blade 3222 that reciprocates (i.e., is in sliding contact) relative to the fixed blade 3122 along the Y direction (i.e., the width direction and the second direction).

[0040] Moreover, by installing the blade module 3 on the main body 2 and using the rotating motor 6 housed in the main body 2 as a driving source, the movable blade 3222 is made to slide back and forth relative to the fixed blade 3122 along the Y direction (i.e., the width direction and the second direction), so that the fixed blade 3122 and the movable blade 3222 are used to clamp and cut the hair.

[0041] In this embodiment, the main body 2 includes a housing 4 forming an outer shell of the hair clipper 1. The housing 4 can be formed of a material such as synthetic resin, and the switch button 43 is mounted on the housing 4 in a state where it is exposed to the outside and can be pushed inward.

[0042] In addition, in the present embodiment, the housing 4 is formed by joining a plurality of split bodies, and includes a first split housing 41 on which a switch button 43 and a display unit 44 are formed, and a second split housing 42 joined to the first split housing 41. A cavity is formed inside the housing 4 formed by joining a plurality of split bodies including the first split housing 41 and the second split housing 42, and various electrical components such as the rotary motor 6 are accommodated in the cavity. These plurality of split bodies can be joined, for example, by using screws or by fitting the split bodies to each other.

[0043] In this embodiment, if Figure 3 , a form in which the hook portion 411 formed on the first split shell 41 is locked to the locking portion 421 formed on the second split shell 42 when the first split shell 41 and the second split shell 42 are joined is illustrated. In addition, a form in which the annular rib 412 formed on the first split shell 41 and the annular rib 422 formed on the second split shell 42 are fixed together by the screw 971 in a state in which the annular rib 412 and the annular rib 422 are opposed to each other is illustrated. Thus, the first split shell 41 and the second split shell 42 are joined.

[0044] Furthermore, in this embodiment, if Figure 2 As shown, a recessed portion 423 recessed toward the front side (i.e., the first split shell 41 side) is formed in the second split shell 42, and an annular rib 422 is formed at the front end of the recessed portion 423. When the annular rib 412 and the annular rib 422 are fixed together by the screw 971, the recessed portion 423 receives the head of the screw 971, and the recessed portion 423 is closed by the screw concealing cover 45 in a state where the head of the screw 971 is received in the recessed portion 423. In this way, the screw 971 that fixes the annular rib 412 and the annular rib 422 together is not exposed to the outside.

[0045] In the hollow space inside the case 4 thus formed, a battery 91 and a rotary motor 6 driven by the battery 91 are housed. In the present embodiment, the rotary motor 6 is housed in the hollow space inside the case 4 in a state held by the motor holding portion 424 formed in the second split case 42.

[0046] On the other hand, the battery 91 is stored in the hollow inside the housing 4 in a state of being held by the battery holding portion 921 formed on the battery holding base 92. In the present embodiment, the battery holding portion 921 is formed to be open to the rear in the X direction (i.e., the front-rear direction and the third direction), and the battery 91 is stored in the battery holding portion 921, so that the battery 91 is held by the battery holding portion 921. Thus, by storing the battery holding base 92 in the hollow inside the housing 4 in a state where the battery 91 is stored in the battery holding portion 921, the battery 91 is stored in the hollow inside the housing 4.

[0047] It should be noted that the battery 91 accommodated in the battery holding portion 921 includes, for example, a dry cell, a rechargeable battery that is the same shape as a dry cell and interchangeable with a dry cell (i.e., a rechargeable battery in the shape of a dry cell), and the like. In this embodiment, an example is given in which only one rechargeable battery that is the same shape as a dry cell and interchangeable with a dry cell (i.e., a rechargeable battery in the shape of a dry cell) is used. Figure 3 As shown, the width of the housing 4 (i.e., the length in the Y direction) is such that two rechargeable batteries (i.e., an example of dry cell-shaped rechargeable batteries) cannot be arranged side by side in the Y direction. Thus, in this embodiment, a hair clipper 1 that is further miniaturized is illustrated. Such a small hair clipper 1 can be used, for example, as a hair clipper for trimming the sideburns and the neck.

[0048] An eccentric cam 8 (an example of a conversion mechanism) serving as a conversion mechanism that converts a rotational motion of a rotation shaft 62 included in the rotary motor 6 into a reciprocating linear motion is accommodated in a cavity formed inside the housing 4 .

[0049] The eccentric cam 8 includes a cam body 81 connected to the top end (i.e., the upper end) of the rotating shaft 62, and an eccentric shaft 82 connected to the upper portion of the cam body 81 at a position eccentric to the rotating shaft 62. Therefore, when the rotating shaft 62 is rotated, the cam body 81 rotates in conjunction with the rotation of the rotating shaft 62, and the eccentric shaft 82 rotates around the rotating shaft 62 in conjunction with the rotation of the cam body 81.

[0050] In this embodiment, if Figure 2 As shown, the eccentric shaft 82 is oriented with its top end toward the blade module 3 ( Figure 2 The eccentric shaft 82 is housed in a hollow space inside the housing 4 in a protruding state, and the top end portion of the eccentric shaft 82 is connected to a guide plate 321 of the blade module 3 described later.

[0051] In addition, a circuit board 93 and the like for controlling the power supply to the rotary motor 6 according to the push operation of the switch button 43 exposed to the outside are housed in the cavity formed inside the housing 4. The circuit board 93 is housed in the cavity inside the housing 4 in a state held by a board holding portion 922 formed on the front side of the battery holding base 92 in the X direction (i.e., the front-rear direction and the third direction).

[0052] In addition, a pair of electrode terminals 923 are installed in the battery holding portion 921. When the battery 91 is arranged in the battery holding portion 921 formed on the battery holding base 92, one electrode of the battery 91 is electrically connected to the circuit substrate 93 via one electrode terminal 923, and the other electrode of the battery 91 is electrically connected to the circuit substrate 93 via another electrode terminal 923.

[0053] The rotary motor 6 is provided with a pair of terminals 6112, and each terminal 6112 is electrically connected to the circuit board 93 via a lead wire (not shown). In this way, the driving of the rotary motor 6 can be controlled using the power supplied from the battery 91.

[0054] Here, in the present embodiment, a through hole 413 is formed in the center of the first split housing 41 in the X direction (i.e., the front-rear direction and the third direction) and in the Y direction (i.e., the width direction and the second direction), and the through hole 413 is blocked by a switch button 43 (i.e., an example of an operating device). The switch button 43 is mounted on the first split housing 41 in a state of being movable along the through direction of the through hole 413 (i.e., the plate thickness direction of the first split housing 41). And, by pressing the switch button 43, the power of the hair clipper 1 can be switched on / off.

[0055] Specifically, a switch element 931 is mounted on the circuit board 93 , and the power supply is switched on and off by operating the switch element 931 using the switch button 43 .

[0056] It should be noted that in the present embodiment, a push-type switch button 43 is exemplified as an operator for switching the power on / off, but other operators may be used. For example, an operator other than a mechanical switch such as a sliding operator, an electrostatic sensor, a pressure-sensitive sensor, or the like may be used.

[0057] In addition, a plurality of LEDs 932 are mounted on the circuit substrate 93, and four through holes 414 are formed in a manner arranged substantially along the Z direction (i.e., the up-down direction and the first direction) at the center portion of the first split housing 41 in the Y direction (i.e., the width direction and the second direction) below the through hole 413. Thus, light emitted from the LED 932 is irradiated to the outside through the through hole 414.

[0058] In the present embodiment, the plurality of LEDs 932 mounted on the circuit board 93 are covered by a light-transmitting LED cover 94. In addition, in a state where the plurality of LEDs 932 are covered by the LED cover 94, the four light guides 941 formed in the LED cover 94 are respectively inserted into the corresponding through holes 414. In this way, the light emitted from the LEDs 932 is irradiated to the outside through the light guides 941, and for example, it is possible to visually know that the hair clipper 1 is powered on, the battery 91 is charged, etc., based on the color of the irradiated light and the irradiation method of the light (for example, always lit, flashing, etc.). In this way, in the present embodiment, the through hole 414 blocked by the light guide 941 has a function as a display unit 44 for confirming the on / off state of the power supply, the charging status of the battery 91, etc.

[0059] In addition, in this embodiment, if Figure 2 As shown, the plug unit 95 is held on the battery holding base 92. The plug unit 95 is formed by holding a plug terminal 952 on a plug base 951. When the plug base 951 holding the plug terminal 952 is held on the battery holding base 92, the plug terminal 952 is electrically connected to the circuit board 93.

[0060] The plug unit 95 is held at the lower end of the battery holding base 92 in the Z direction (i.e., the up-down direction and the first direction) in a state where the top end 9521 of the plug terminal 952 faces downward, and the top end 9521 of the plug terminal 952 is exposed to the outside of the housing 4. Specifically, the plug terminal 952 is inserted into an insertion hole (not shown) formed in the plug cover 46, and the top end 9521 of the plug terminal 952 is exposed from the plug cover 46. The plug cover 46 is fixed to the second split housing 42 by the screw 972, whereby the top end 9521 of the plug terminal 952 is exposed to the outside of the housing 4.

[0061] Then, the battery 91 is charged by inserting a charging cable (for example, a charging wire) (not shown) into the tip end portion 9521 of the plug terminal 952 exposed to the outside of the housing 4 .

[0062] Note that power may also be supplied from the outside using a power cord or the like.

[0063] The blade module 3 has a function of cutting hair, and includes a blade portion (ie, a blade of a hair clipper) formed by arranging a movable blade 3222 and a fixed blade 3122 in a manner facing each other.

[0064] In this embodiment, if Figure 2 and Figure 3As shown, the blade module 3 includes: a fixed blade module 31 having a fixed blade 3122; and a movable blade module 32 having a movable blade 3222, and the movable blade module 32 can reciprocate linearly relative to the fixed blade module 31 in the Y direction (i.e., the width direction and the second direction). Therefore, by making the movable blade module 32 reciprocate linearly relative to the fixed blade module 31 in the Y direction (i.e., the width direction and the second direction), the movable blade 3222 is reciprocated and slid relative to the fixed blade 3122 in the Y direction (i.e., the width direction and the second direction).

[0065] like Figure 2 and Figure 3 As shown, the fixed blade module 31 includes a resin fixed plate 311 and a metal fixed plate piece 312 fixed to the fixed plate 311, and the fixed plate piece 312 includes a main body 3121 fixed to the fixed plate 311 and a fixed blade 3122 formed at the top of the main body 3121. Then, by fixing the fixed plate 311 in a state where the main body 3121 with the fixed plate piece 312 fixed is fixed to the main body 2, the fixed blade module 31 is mounted on the main body 2. At this time, the fixed blade module 31 is fixed to the main body 2 in a state where at least the top side of the fixed blade 3122 protrudes from the top of the main body 2.

[0066] On the other hand, Figure 2 and Figure 3 As shown, the movable blade module 32 includes a guide plate 321 made of resin and a movable plate piece 322 made of metal fixed to the guide plate 321 . The movable plate piece 322 includes a main body 3221 fixed to the guide plate 321 and a movable blade 3222 formed at the top end of the main body 3221 .

[0067] Furthermore, when the blade module 3 is mounted on the main body 2, the guide plate 321 is connected to the rotating shaft 62 of the rotary motor 6 via the eccentric cam 8 (i.e., an example of a conversion mechanism). In the present embodiment, the guide plate 321 is connected to the eccentric shaft 82 by engaging the top end of the eccentric shaft 82 with the engaging recess 3211 formed on the guide plate 321.

[0068] Furthermore, in the present embodiment, when the blade module 3 is mounted on the main body 2 , the movable blade 3222 is in contact with the fixed blade 3122 .

[0069] In this way, when the rotary motor 6 is driven to rotate the rotary shaft 62, the guide plate 321 and the movable plate 322 fixed to the guide plate 321, that is, the movable blade module 32, and the movement of the eccentric shaft 82 are linked to reciprocate linear motion in the Y direction (i.e., the width direction and the second direction). In addition, by making the movable blade module 32 reciprocate linear motion in the Y direction (i.e., the width direction and the second direction), the movable blade 3222 is reciprocated relative to the fixed blade 3122 in the Y direction (i.e., the width direction and the second direction), and the movable blade 3222 and the fixed blade 3122 can be used to cut hair. It should be noted that the driving method of the blade module 3 is not limited to the above method, and various methods can be used.

[0070] Furthermore, in the present embodiment, the blade module 3 includes a metal push-up spring 33 that pushes the movable plate 322 toward the fixed plate 312 side.

[0071] The push-up spring 33 is a member for making the movable blade 3222 and the fixed blade 3122 more reliably slide in contact with each other by pushing the movable plate 322 toward the fixed plate 312, and can be formed by a torsion spring, for example. In the present embodiment, the push-up spring 33 comprises: a coil portion 331; and an arm portion 332, which is connected to the end of the coil portion 331 and fixed to the movable plate 322, and the arm portion 332 pushes the movable plate 322 toward the fixed plate 312.

[0072] Furthermore, in the present embodiment, the blade retaining spring 96 is fixed to the housing 4 by the screw 973 , and the blade retaining spring 96 retains the blade module 3 , thereby preventing the blade module 3 from falling off from the housing 4 .

[0073] Figure 4 1 is a diagram showing an example of a motor module 5 according to the embodiment, and is an enlarged perspective view showing a state before a motor module member 7 and a rotary electric motor 6 are integrated. Figure 5 1 is a diagram showing an example of a motor module 5 according to the embodiment, and is an enlarged perspective view showing a state in which a motor module member 7 and a rotary electric motor 6 are integrated. Figure 6 1 is a diagram showing an example of a motor module 5 according to the embodiment, and is an enlarged front view showing a state in which a motor module member 7 and a rotary electric motor 6 are integrated. Figure 7 1 is a diagram showing an example of a motor module according to the embodiment, and is a plan view showing a state in which a motor module member 7 and a rotary electric motor 6 are integrated. Figure 8 1 is a diagram showing an example of a motor module 5 according to the embodiment, and is an enlarged cross-sectional view showing a state before a motor module member 7 and a rotary electric motor 6 are integrated. Fig. 91 is a diagram showing an example of a motor module 5 according to an embodiment, and is an enlarged cross-sectional view showing a state where a motor module member 7 and a rotary motor 6 are integrated. In this embodiment, it is possible to achieve a quieter use of the hair clipper 1. Specifically, Figures 4 to 9 As shown, the hair clipper 1 includes: a shaft contact portion 72 that presses the rotating shaft 62 in at least one direction intersecting the Z direction (i.e., the first direction and the up-down direction); and a support portion (more specifically, a main body portion 71 described later) that supports the shaft contact portion 72. Thus, while the rotation of the rotating shaft 62 is allowed, the shaft vibration of the rotating shaft 62 caused by the gap 63 during the rotation is limited by the shaft contact portion 72.

[0074] In the present embodiment, the hair clipper 1 includes: a rotary motor 6 ; and a motor module member 7 which is formed of a member independent of the rotary motor 6 and constitutes at least a part of the motor module 5 together with the rotary motor 6 .

[0075] Thus, in this embodiment, the motor module 5 is constituted by the rotary motor 6 and the motor module component 7. It should be noted that the motor module 5 does not have to be constituted only by the rotary motor 6 and the motor module component 7, and can also be a motor module having components independent of the rotary motor 6 and the motor module component 7.

[0076] The rotary motor 6 includes a rotary shaft 62 extending in the Z direction (ie, the first direction and the up-down direction) and a motor drive unit 61 capable of rotationally driving the rotary shaft 62 . The rotary shaft 62 is configured to be relatively rotatable with respect to the motor drive unit 61 .

[0077] In this embodiment, the motor driving unit 61 includes: a motor body 611; and a bearing 612 which is provided continuously with the upper end of the motor body 611 and is formed to protrude from the motor body 611 in the Z direction (i.e., the first direction and the up-down direction). Figure 8 As shown, the rotating shaft 62 is supported by the bearing portion 612 with a gap 63 provided between the inner side surface 6121 of the bearing portion 612 and the peripheral surface 621 of the rotating shaft 62. In this way, the rotating shaft 62 can be relatively rotated with respect to the motor driving portion 61.

[0078] In addition, in the present embodiment, the motor body 611 includes a motor housing 6111, and the motor housing 6111 includes a top wall 61111, a peripheral wall 61112, and a bottom wall 61113. In addition, a cavity is formed inside the motor housing 6111, and components such as a stator and a rotor are accommodated in the cavity. It should be noted that the rotor is a component that rotates relative to the stator, and a rotating shaft 62 is integrally provided on the rotor. And the rotating shaft 62 rotates in conjunction with the rotation of the rotor.

[0079] On the other hand, the motor module component 7 includes a main body 71 integrated with the motor drive unit 61 and a shaft contact portion 72 provided on the main body 71. Thus, in the present embodiment, the main body 71 as a support portion is integrated with the motor drive unit 61, and the motor drive unit 61, the support portion (more specifically, the main body 71) and the shaft contact portion 72 constitute at least a part of the motor module 5.

[0080] Here, in the present embodiment, the shaft contact portion 72 is configured to press the rotating shaft 62 in at least one direction intersecting the Z direction (i.e., the first direction and the up-down direction) in a state where the main body portion 71 and the motor drive portion 61 are integrated. It should be noted that in the present embodiment, the direction intersecting the Z direction (i.e., the first direction and the up-down direction) refers to an arbitrary direction along the XY plane.

[0081] Therefore, when the main body 71 and the motor drive unit 61 are integrated, the shaft abutment portion 72 presses the rotating shaft 62 in at least one direction intersecting the Z direction (i.e., the first direction and the up and down direction), thereby allowing sliding contact of the peripheral surface 621 while limiting the shaft jitter of the rotating shaft 62 caused by the gap 63 during rotation.

[0082] In this way, the rotating shaft 62 can be rotated in a state where the shaft vibration is suppressed, and the interference between the rotating shaft 62 and the bearing portion 612 caused by the shaft vibration can be more reliably suppressed. In this way, if the interference between the rotating shaft 62 and the bearing portion 612 caused by the shaft vibration can be more reliably suppressed, the generation of abnormal sound due to the interference between the rotating shaft 62 and the bearing portion 612 during the shaft vibration can be suppressed, so that the hair clipper 1 can be used in a silent manner.

[0083] It should be noted that, in the present embodiment, an eccentric cam 8 (i.e., an example of a conversion mechanism) is mounted on the top end (i.e., the upper end) of the rotating shaft 62. Therefore, when the main body 71 is integrated with the motor drive unit 61, the shaft contact portion 72 is contacted with a portion of the rotating shaft 62 that is lower than the portion connected to the cam body 81 of the eccentric cam 8 (i.e., an example of a conversion mechanism) and protrudes upward from the bearing portion 612.

[0084] In this embodiment, the peripheral surface 621 of the rotating shaft 62 contacts the bearing 612 after the main body 71 and the motor driving unit 61 are integrated, and the rotating shaft 62 can rotate while being sandwiched between the shaft contact portion 72 and the bearing 612 .

[0085] Specifically, the shaft contact portion 72 is formed by a beam portion 721 extending in a direction intersecting the Z direction (i.e., the first direction and the up-down direction). When the main body portion 71 and the motor drive portion 61 are integrated, the sliding contact surface 7211 of the beam portion 721 is used to press the rotating shaft 62 in a direction orthogonal to the extending direction of the beam portion 721, so that the peripheral surface 621 contacts the bearing portion 612 in a state pressed against the inner side surface 6121 of the bearing portion 612.

[0086] In this way, when the rotating shaft 62 is rotated during use of the hair clipper 1, the shaft vibration of the rotating shaft 62 can be more reliably suppressed, and further quietness during use of the hair clipper 1 can be achieved.

[0087] In this way, if the structure is such that the rotating shaft 62 is pressed in one direction by using one beam portion 721 extending in a direction intersecting the Z direction (i.e., the first direction and the vertical direction), the contact area between the shaft contact portion 72 and the rotating shaft 62 can be minimized, thereby suppressing the load acting on the rotating motor 6 from increasing when the rotating shaft 62 is rotated. As a result, the continuous operation time of the rotating motor 6 at a predetermined electrical capacity (e.g., the electrical capacity of the fully charged rechargeable battery 91, etc.) can be relatively long.

[0088] In addition, in the present embodiment, the beam portion 721 is formed as a two-end support beam structure that is continuously provided at both ends with the main body portion 71, and it is possible to more reliably suppress the beam portion 721 from bending in a direction opposite to the one direction due to the reaction force from the rotating shaft 62 when the rotating shaft 62 is pressed in one direction. In this way, when the rotating shaft 62 is rotated, the shaft vibration of the rotating shaft 62 can be more reliably suppressed, and further silencing can be achieved when the hair clipper 1 is used.

[0089] Furthermore, in the present embodiment, the direction in which the beam 721 extends (i.e., the X direction, the third direction, and the front-rear direction) is orthogonal to the direction in which the movable blade 3222 reciprocates in a straight line (i.e., the Y direction, the second direction, and the width direction), and the rotating shaft 62 is pressed in the Y direction (i.e., the second direction and the width direction) by the beam 721. In this way, the rotating shaft 62 can be more reliably suppressed from moving in the Y direction (i.e., the second direction and the width direction) (e.g., generating shaft vibration).

[0090] Specifically, the beam portion 721 can more efficiently bear the force applied to the rotating shaft 62 when the movable blade 3222 is reciprocated linearly along the Y direction (i.e., the second direction and the width direction) (for example, the force intended to move the rotating shaft 62 in the Y direction). It should be noted that most of the force applied to the rotating shaft 62 when the movable blade 3222 is reciprocated linearly along the Y direction (i.e., the second direction and the width direction) becomes the force intended to move the rotating shaft 62 in the Y direction (i.e., the second direction and the width direction) (for example, to generate shaft vibration).

[0091] Therefore, if the beam portion 721 is extended in a direction orthogonal to the direction of the reciprocating linear motion of the movable blade 3222 (i.e., the Y direction, the second direction, and the width direction), the movement of the rotating shaft 62 in the Y direction (i.e., the second direction and the width direction) (e.g., causing shaft shaking) can be further reliably suppressed.

[0092] In addition, if the movement (e.g., shaft vibration) of the rotating shaft 62 in the Y direction (i.e., the second direction and the width direction) when the movable blade 3222 is reciprocated linearly can be suppressed, the amplitude reduction of the movable blade 3222 can be suppressed. And, if the reduction of the amplitude of the movable blade 3222 can be suppressed, the cutting ability of the movable blade 3222 and the fixed blade 3122 for hair can be further improved.

[0093] In this embodiment, lubricating oil such as grease is applied to the rotating shaft 62 and the shaft contact portion 72 to reduce friction between the rotating shaft 62 and the shaft contact portion 72. The effect of reducing friction between the rotating shaft 62 and the shaft contact portion 72 can be maintained for a longer period of time. Fig.10 1 is a perspective view showing an example of a motor module member 7 according to an embodiment. Fig.10 As shown, a recessed portion 72111 is formed on the surface (i.e., sliding contact surface 7211) of the shaft contact portion 72 that is in sliding contact with the peripheral surface 621. In this embodiment, a slit-shaped recessed portion 72111 extending along the X direction (i.e., the front-rear direction and the third direction) is provided at the center of the sliding contact surface 7211 in the Z direction (i.e., the up-down direction and the first direction).

[0094] In this way, lubricating oil such as grease can be retained in the recessed portion 72111, and the lubricating oil retained in the recessed portion 72111 can be supplied little by little to the rotating shaft 62. In this way, the friction generated between the rotating shaft 62 and the shaft contact portion 72 can be reduced for a longer period of time, that is, the friction reduction structure between the rotating shaft 62 and the shaft contact portion 72 can be maintained for a longer period of time.

[0095] In addition, in the present embodiment, the main body 71 includes a mounting portion 711 mounted on the motor drive portion 61. Furthermore, in the present embodiment, the mounting portion 711 includes an annular portion 7111 formed with an insertion hole 71111 into which the bearing portion 612 is inserted. Thus, by inserting the bearing portion 612 into the insertion hole 71111, the main body 71 can be mounted on the motor drive portion 61 (more specifically, the main body 71 and the motor drive portion 61 are integrated).

[0096] Thus, in the present embodiment, the motor module 5 is formed by the rotary motor 6 and the motor module member 7 mounted on the rotary motor 6. That is, the motor module 5 is formed by mounting the motor module member 7 on the rotary motor 6. Furthermore, the use of the motor module member 7 that can form a single motor module 5 independent of the housing 4 can achieve quietness when the hair clipper 1 is used.

[0097] In this way, if a separate motor module 5 can be constructed (more specifically, the motor module 5 is set to a state where the shaft abutment portion 72 presses the rotating shaft 62 when it is not installed in the housing 4 of the hair clipper 1), the motor module 5 can be formed more easily, and the quality and effect of the motor module 5 can be stabilized.

[0098] In addition, if the mounting portion 711 has an annular portion 7111 having an insertion hole 71111 for inserting the bearing portion 612, the main body 71 can be mounted on the motor drive portion 61 simply by inserting the bearing portion 612 into the insertion hole 71111, thereby making it easier to arrange the shaft abutment portion 72 in the proper position.

[0099] Furthermore, in the present embodiment, the main body 71 has a fixing protrusion 712 (an example of a fixing portion) fixed to a fixing hole 6111 a (an example of a fixed portion) formed in the motor driving portion 61 .

[0100] Therefore, in this embodiment, when the main body 71 is installed to the motor drive unit 61, the bearing portion 612 is inserted into the insertion hole 71111 formed in the annular portion 7111, and the fixing protrusion 712 (i.e., an example of a fixing portion) formed on the main body 71 is inserted into the fixing hole 6111a (i.e., an example of a fixed portion) formed in the motor drive unit 61.

[0101] In this way, the motor module member 7 (more specifically, the main body 71 and the shaft contact portion 72) can be prevented from being displaced relative to the motor drive portion 61, so that the shaft contact portion 72 can more reliably limit the shaft vibration of the rotating shaft 62 during rotation caused by the gap 63. As a result, the hair clipper 1 can be more reliably used in a silent manner.

[0102] In addition, since the motor module component 7 (more specifically, the main body 71 and the shaft contact portion 72) can be positioned relative to the motor drive unit 61, the shaft contact portion 72 can be more easily and reliably arranged at a proper position when the main body 71 and the motor drive unit 61 are integrated. As a result, the quality and effect of the motor module 5 can be stabilized.

[0103] It should be noted that the motor module 5 is not limited to the structure shown in the above embodiment, but can be set to various structures. Fig.11 The motor module 5 is shown. Fig.11 This is a diagram showing a first modified example of the motor module 5 according to the embodiment, and is an enlarged perspective view showing a state in which the motor module member 7 and the rotary electric motor 6 are integrated.

[0104] Fig.11 The illustrated motor module 5 also includes a rotary electric motor 6 and a motor module member 7 that is formed of a member independent of the rotary electric motor 6 and that constitutes at least a portion of the motor module 5 together with the rotary electric motor 6 .

[0105] The rotary motor 6 includes a rotary shaft 62 extending in the Z direction (i.e., the first direction and the vertical direction) and a motor driving unit 61 capable of driving the rotary shaft 62 to rotate. The motor driving unit 61 includes a motor body 611 and a bearing 612 which is provided continuously with the upper end of the motor body 611 and is formed to protrude from the motor body 611 in the Z direction (i.e., the first direction and the vertical direction). The rotary shaft 62 is supported by the bearing 612 in a state where a gap 63 is provided between the inner side surface 6121 of the bearing 612 and the peripheral surface 621 of the rotary shaft 62.

[0106] In addition, the motor module member 7 includes a main body 71 integrated with the motor drive unit 61 and a shaft contact portion 72 provided on the main body 71. The shaft contact portion 72 is also configured to press the rotating shaft 62 in at least one direction intersecting the Z direction (i.e., the first direction and the up-down direction) in a state where the main body 71 and the motor drive unit 61 are integrated.

[0107] Therefore, when the main body 71 and the motor drive unit 61 are integrated, the shaft abutment portion 72 presses the rotating shaft 62 in at least one direction intersecting the Z direction (i.e., the first direction and the up and down direction), thereby allowing sliding contact of the peripheral surface 621 while limiting the shaft jitter of the rotating shaft 62 caused by the gap 63 during rotation.

[0108] The shaft contact portion 72 is formed by a beam portion 721 extending in a direction intersecting the Z direction (i.e., the first direction and the up-down direction). When the main body portion 71 and the motor drive portion 61 are integrated, the peripheral surface 621 of the rotating shaft 62 contacts the bearing portion 612 .

[0109] Furthermore, the direction in which the beam 721 extends (i.e., the X direction, the third direction, and the front-rear direction) is orthogonal to the direction in which the movable blade 3222 reciprocates in a straight line (i.e., the Y direction, the second direction, and the width direction), and the rotating shaft 62 is pressed in the Y direction (i.e., the second direction and the width direction) by the beam 721. In this way, the rotating shaft 62 can be more reliably suppressed from moving in the Y direction (i.e., the second direction and the width direction) (e.g., generating shaft vibration).

[0110] The main body 71 includes a mounting portion 711 to be mounted on the motor drive portion 61 , and the mounting portion 711 includes an annular portion 7111 formed with an insertion hole 71111 into which the bearing portion 612 is inserted.

[0111] So, in Fig.11 In the case of the motor module 5 shown, it is also possible to configure a separate motor module 5 (more specifically, the motor module 5 is set to a state where the shaft contact portion 72 presses the rotating shaft 62 when it is not installed in the housing 4 of the hair clipper 1).

[0112] It should be noted that if Fig.11 When the motor module 5 shown is installed in the housing 4, a hair clipper 1 is formed that includes a shaft abutment portion 72 that presses the rotating shaft 62 in at least one direction intersecting the Z direction (i.e., the first direction and the up and down direction) and a supporting portion (more specifically, the main body 71) that supports the shaft abutment portion 72.

[0113] Here, in Fig.11 In the illustrated motor module 5 , the beam portion 721 is formed into a cantilever beam structure in which only one end is continuously provided to the main body portion 71 .

[0114] In this way, the beam portion 721 is easily elastically deformed compared to the two-end support beam structure, and the dimensional error of the motor module component 7 and the like can be absorbed by the elastic deformation of the beam portion 721. In this way, if the dimensional error of the motor module component 7 and the like can be absorbed by the elastic deformation of the beam portion 721, the motor module 5 can be formed more easily.

[0115] It should be noted that in Fig.11 In the illustrated motor module 5 , it is also preferable that a recessed portion 72111 is formed on a surface of the shaft contact portion 72 that comes into sliding contact with the peripheral surface 621 (ie, the sliding contact surface 7211 ).

[0116] In addition, it is preferable that the main body 71 has a fixing protrusion 712 (an example of a fixing portion) fixed to a fixing hole 6111 a (an example of a fixed portion) formed in the motor driving portion 61 .

[0117] In addition, it can also be set Fig.12The motor module 5 is shown. Fig.12 This is a diagram showing a second modification of the motor module 5 according to the embodiment, and is an enlarged perspective view showing a state in which the motor module member 7 and the rotary electric motor 6 are integrated.

[0118] Fig.12 The illustrated motor module 5 also includes a rotary electric motor 6 and a motor module member 7 that is formed of a member independent of the rotary electric motor 6 and that constitutes at least a portion of the motor module 5 together with the rotary electric motor 6 .

[0119] The rotary motor 6 includes a rotary shaft 62 extending in the Z direction (i.e., the first direction and the vertical direction) and a motor driving unit 61 capable of driving the rotary shaft 62 to rotate. The motor driving unit 61 includes a motor body 611 and a bearing 612 which is provided continuously with the upper end of the motor body 611 and is formed to protrude from the motor body 611 in the Z direction (i.e., the first direction and the vertical direction). The rotary shaft 62 is supported by the bearing 612 in a state where a gap 63 is provided between the inner side surface 6121 of the bearing 612 and the peripheral surface 621 of the rotary shaft 62.

[0120] In addition, the motor module member 7 includes a main body 71 integrated with the motor drive unit 61 and a shaft contact portion 72 provided on the main body 71. The shaft contact portion 72 is also configured to press the rotating shaft 62 in at least one direction intersecting the Z direction (i.e., the first direction and the up-down direction) in a state where the main body 71 and the motor drive unit 61 are integrated.

[0121] Therefore, when the main body 71 and the motor drive unit 61 are integrated, the shaft abutment portion 72 presses the rotating shaft 62 in at least one direction intersecting the Z direction (i.e., the first direction and the up and down direction), thereby allowing sliding contact of the peripheral surface 621 while limiting the shaft jitter of the rotating shaft 62 caused by the gap 63 during rotation.

[0122] The main body 71 includes a mounting portion 711 to be mounted on the motor drive portion 61 , and the mounting portion 711 includes an annular portion 7111 formed with an insertion hole 71111 into which the bearing portion 612 is inserted.

[0123] So, in Fig.12 In the case of the motor module 5 shown, it is also possible to configure a separate motor module 5 (more specifically, the motor module 5 is set to a state where the shaft contact portion 72 presses the rotating shaft 62 when it is not installed in the housing 4 of the hair clipper 1).

[0124] It should be noted that if Fig.12When the motor module 5 shown is installed in the housing 4, a hair clipper 1 is formed that includes a shaft abutment portion 72 that presses the rotating shaft 62 in at least one direction intersecting the Z direction (i.e., the first direction and the up and down direction) and a supporting portion (more specifically, the main body 71) that supports the shaft abutment portion 72.

[0125] Here, in Fig.12 In the motor module 5 shown, the rotating shaft 62 is clamped by a pair of shaft contact parts 72 after the main body 71 and the motor driving part 61 are integrated. Specifically, the pair of shaft contact parts 72 are composed of two beam parts 721 extending in a direction intersecting the Z direction (i.e., the first direction and the up-down direction).

[0126] Thus, the rotating shaft 62 can be rotated while being clamped by the pair of shaft abutment portions 72, and when the rotating shaft 62 is rotated during use of the hair clipper 1, the shaft vibration of the rotating shaft 62 can be more reliably suppressed. Thus, further silencing can be achieved during use of the hair clipper 1.

[0127] Furthermore, the direction in which the beam 721 extends (i.e., the X direction, the third direction, and the front-rear direction) is orthogonal to the direction in which the movable blade 3222 reciprocates in a straight line (i.e., the Y direction, the second direction, and the width direction), and the rotating shaft 62 is pressed in the Y direction (i.e., the second direction and the width direction) by the beam 721. In this way, the rotating shaft 62 can be more reliably suppressed from moving in the Y direction (i.e., the second direction and the width direction) (e.g., generating shaft vibration).

[0128] In addition, both beams 721 are formed into a beam structure with both ends supported. It should be noted that one of the two beams 721 may be formed into a cantilever beam structure with only one end being continuously provided to the main body 71 .

[0129] Alternatively, both beams 721 may be formed into a cantilever beam structure with only one end being continuous with the main body 71. In this case, the ends of the two beams 721 continuous with the main body 71 may be located on the same side or on opposite sides.

[0130] In addition, Fig.12 In the illustrated motor module 5 , it is also preferable that a recessed portion 72111 is formed on a surface of the shaft contact portion 72 that comes into sliding contact with the peripheral surface 621 (ie, the sliding contact surface 7211 ).

[0131] In addition, it is preferable that the main body 71 has a fixing protrusion 712 (an example of a fixing portion) fixed to a fixing hole 6111 a (an example of a fixed portion) formed in the motor driving portion 61 .

[0132] In addition, it can also be set Fig.13 and Fig.14 The motor module 5 is shown. Fig.13 This is a diagram showing a third modified example of the motor module 5 according to the embodiment, and is an enlarged perspective view showing a state before the motor module member 7 and the rotary electric motor 6 are integrated. Fig.14 This is a diagram showing a third modified example of the motor module 5 according to the embodiment, and is an enlarged perspective view showing a state in which the motor module member 7 and the rotary electric motor 6 are integrated.

[0133] Fig.13 and Fig.14 The illustrated motor module 5 also includes a rotary electric motor 6 and a motor module member 7 that is formed of a member independent of the rotary electric motor 6 and that constitutes at least a portion of the motor module 5 together with the rotary electric motor 6 .

[0134] The rotary motor 6 includes a rotary shaft 62 extending in the Z direction (i.e., the first direction and the vertical direction) and a motor driving unit 61 capable of driving the rotary shaft 62 to rotate. The motor driving unit 61 includes a motor body 611 and a bearing 612 which is provided continuously with the upper end of the motor body 611 and is formed to protrude from the motor body 611 in the Z direction (i.e., the first direction and the vertical direction). The rotary shaft 62 is supported by the bearing 612 in a state where a gap 63 is provided between the inner side surface 6121 of the bearing 612 and the peripheral surface 621 of the rotary shaft 62.

[0135] In addition, the motor module member 7 includes a main body 71 integrated with the motor drive unit 61 and a shaft contact portion 72 provided on the main body 71. The shaft contact portion 72 is also configured to press the rotating shaft 62 in at least one direction intersecting the Z direction (i.e., the first direction and the up-down direction) in a state where the main body 71 and the motor drive unit 61 are integrated.

[0136] Therefore, when the main body 71 and the motor drive unit 61 are integrated, the shaft abutment portion 72 presses the rotating shaft 62 in at least one direction intersecting the Z direction (i.e., the first direction and the up and down direction), thereby allowing sliding contact of the peripheral surface 621 while limiting the shaft jitter of the rotating shaft 62 caused by the gap 63 during rotation.

[0137] The main body 71 includes a mounting portion 711 to be mounted on the motor drive portion 61 , and the mounting portion 711 includes an annular portion 7111 formed with an insertion hole 71111 into which the bearing portion 612 is inserted.

[0138] So, in Fig.13 and Fig.14In the case of the motor module 5 shown, it is also possible to configure a separate motor module 5 (more specifically, the motor module 5 is set to a state where the shaft contact portion 72 presses the rotating shaft 62 when it is not installed in the housing 4 of the hair clipper 1).

[0139] It should be noted that if Fig.13 and Fig.14 When the motor module 5 shown is installed in the housing 4, a hair clipper 1 is formed that includes a shaft abutment portion 72 that presses the rotating shaft 62 in at least one direction intersecting the Z direction (i.e., the first direction and the up and down direction) and a supporting portion (more specifically, the main body 71) that supports the shaft abutment portion 72.

[0140] The shaft contact portion 72 is formed by a beam portion 721 extending in a direction intersecting the Z direction (i.e., the first direction and the up-down direction). When the main body portion 71 and the motor drive portion 61 are integrated, the peripheral surface 621 of the rotating shaft 62 contacts the bearing portion 612 .

[0141] The beam portion 721 is formed into a beam structure with both ends supported. It should be noted that the beam portion 721 may be formed into a cantilever beam structure with only one end being continuously provided with the main body portion 71. In addition, the rotating shaft 62 may be clamped by a pair of shaft abutment portions 72 in a state where the main body portion 71 and the motor drive portion 61 are integrated.

[0142] Furthermore, the direction in which the beam 721 extends (i.e., the X direction, the third direction, and the front-rear direction) is orthogonal to the direction in which the movable blade 3222 reciprocates in a straight line (i.e., the Y direction, the second direction, and the width direction), and the rotating shaft 62 is pressed in the Y direction (i.e., the second direction and the width direction) by the beam 721. In this way, the rotating shaft 62 can be more reliably suppressed from moving in the Y direction (i.e., the second direction and the width direction) (e.g., generating shaft vibration).

[0143] The main body 71 also has a fixing protrusion 712 (an example of a fixing portion) that is fixed to a fixing hole 6111 a (an example of a fixed portion) formed in the motor driving portion 61 .

[0144] Here, in Fig.13 and Fig.14 In the motor module 5 shown in the figure, the mounting portion 711 has a C-shaped portion 73, and the C-shaped portion 73 is mounted on the bearing portion 612 in a state where a pair of top ends 7321 are separated in the circumferential direction. Fig.13 and Fig.14In the motor module 5 shown, the C-shaped portion 73 includes a base 731 and a pair of arm portions 732 provided continuously at both ends of the base 731, and a notch 733 is formed at the connection portion between the base 731 and the arm portions 732. In this way, the pair of arm portions 732 of the C-shaped portion 73 can be elastically deformed in a direction in which the top end 7321 is separated. That is, the C-shaped portion 73 can be elastically deformed in a manner that the inner surface 73a is expanded and contracted.

[0145] Furthermore, by providing such a C-shaped portion 73, the main body 71 can be attached to and detached from the motor drive unit 61 while the eccentric cam 8 (i.e., an example of a conversion mechanism) is connected to the rotating shaft 62. In this way, if the eccentric cam 8 (i.e., an example of a conversion mechanism) is connected to the rotating shaft 62 before the main body 71 is mounted on the motor drive unit 61, the motor module component 7 will not be displaced relative to the rotary motor 6 or damaged when the eccentric cam 8 (i.e., an example of a conversion mechanism) is connected to the rotating shaft 62, so that the quality and effect of the hair clipper 1 can be stabilized.

[0146] It should be noted that, when the main body 71 has a fixing protrusion 712 (i.e., an example of a fixing portion) fixed to a fixing hole 6111a (i.e., an example of a fixed portion) formed in the motor drive portion 61, after the motor module component 7 is moved in the direction along the XY plane so that the circumferential surface 621 of the rotating shaft 62 is opposed to the inner surface 73a of the C-shaped portion 73, the motor module component 7 is moved downward and the fixing protrusion 712 (i.e., an example of a fixing portion) is inserted into the fixing hole 6111a (i.e., an example of a fixed portion), thereby installing the motor module component 7 on the rotating motor 6.

[0147] Therefore, in a case where the main body 71 has a fixing protrusion 712 (i.e., an example of a fixing portion) fixed to a fixing hole 6111a (i.e., an example of a fixed portion) formed in the motor drive portion 61, if the separation distance between the top ends 7321 of a pair of arm portions 732 is greater than the diameter of the rotating shaft 62, it is not necessary to provide a structure that allows the C-shaped portion 73 to elastically deform in the direction in which the pair of top ends 7321 are separated.

[0148] In addition, Fig.13 and Fig.14 In the illustrated motor module 5 , it is also preferable that a recessed portion 72111 is formed on a surface of the shaft contact portion 72 that comes into sliding contact with the peripheral surface 621 (ie, the sliding contact surface 7211 ).

[0149] In addition, it can also be set to have Fig.15 A hair clipper 1 of the structure shown. Fig.151 is a diagram showing a modification of the hair clipper 1 according to the embodiment, and is an enlarged perspective view showing a state in which the rotary motor 6 is assembled to the second split case 42 .

[0150] exist Fig.15 In the structure shown, the hair clipper 1 also includes a shaft contact portion 72 that presses the rotating shaft 62 in at least one direction intersecting the Z direction (i.e., the first direction and the up-down direction) and a support portion that supports the shaft contact portion 72. Thus, while the rotation of the rotating shaft 62 is allowed, the shaft shaking of the rotating shaft 62 caused by the gap 63 during the rotation is restricted by the shaft contact portion 72.

[0151] In addition, Fig.15 In the structure shown, the rotary motor 6 also includes a rotary shaft 62 extending in the Z direction (i.e., the first direction and the vertical direction) and a motor driving unit 61 capable of driving the rotary shaft 62 to rotate. The motor driving unit 61 includes: a motor body 611; and a bearing 612, which is provided continuously with the upper end of the motor body 611 and is formed to protrude from the motor body 611 in the Z direction (i.e., the first direction and the vertical direction). The rotary shaft 62 is supported by the bearing 612 in a state where a gap 63 is provided between the inner side surface 6121 of the bearing 612 and the peripheral surface 621 of the rotary shaft 62.

[0152] Here, in Fig.15 In the embodiment, a support portion is formed in the housing 4. Specifically, when the rotary motor 6 is held by the motor holding portion 424 formed in the second split housing 42, the rotary shaft 62 is pressed in the Y direction (i.e., the second direction and the width direction) by the beam portion 721 of the shaft abutment portion 72 supported by the second split housing 42.

[0153] So, in Fig.15 In the illustrated structure, the rotating shaft 62 is pressed in the Y direction (ie, the second direction and the width direction) by the beam portion 721 of the shaft contact portion 72 when the rotating motor 6 is mounted on the housing 4 .

[0154] It should be noted that the shaft contact portion 72 may be integrally formed on the second split shell 42 as the shell 4. In this case, the second split shell 42 functions as a support portion. In addition, the end of the shaft contact portion 72 formed by a member independent of the second split shell 42 may be fitted into a fitting portion formed on the second split shell 42. In this case, the fitting portion formed on the second split shell 42 functions as a support portion.

[0155] In addition, Fig.15 In the illustrated structure, the shaft contact portion 72 is configured to press the rotating shaft 62 in at least one direction intersecting the Z direction (ie, the first direction and the vertical direction) when the rotating motor 6 is mounted on the housing 4 .

[0156] Therefore, when the rotating motor 6 is installed on the housing 4, the shaft abutment portion 72 presses the rotating shaft 62 in at least one direction intersecting the Z direction (i.e., the first direction and the up and down direction), thereby allowing sliding contact of the peripheral surface 621 while limiting the shaft jitter of the rotating shaft 62 during rotation caused by the gap 63.

[0157] The shaft contact portion 72 is formed by a beam portion 721 extending in a direction intersecting the Z direction (ie, the first direction and the vertical direction). When the rotary motor 6 is mounted on the housing 4 , the peripheral surface 621 of the rotary shaft 62 contacts the bearing portion 612 .

[0158] Furthermore, the direction in which the beam 721 extends (i.e., the X direction, the third direction, and the front-rear direction) is orthogonal to the direction in which the movable blade 3222 reciprocates in a straight line (i.e., the Y direction, the second direction, and the width direction), and the rotating shaft 62 is pressed in the Y direction (i.e., the second direction and the width direction) by the beam 721. In this way, the rotating shaft 62 can be more reliably suppressed from moving in the Y direction (i.e., the second direction and the width direction) (e.g., generating shaft vibration).

[0159] In this way, it is not necessary to prepare the motor module member 7 separately from the housing 4 , and it is possible to simplify the structure and reduce the cost while achieving quietness when the hair clipper 1 is used.

[0160] It should be noted that the beam portion 721 may be formed as a cantilever beam structure with only one end being continuous with the main body portion 71 , or may be formed as a beam structure with both ends supported by fixing the top end of the shaft contact portion 72 to the first split shell 41 when forming the shell 4 .

[0161] In addition, Fig.15 In the illustrated structure, it is also preferable that a recessed portion 72111 is formed on a surface of the shaft contact portion 72 that comes into sliding contact with the peripheral surface 621 (ie, the sliding contact surface 7211 ).

[0162] [Function, Effect]

[0163] Hereinafter, characteristic structures of the hair clipper and the motor module used in the hair clipper shown in the above-mentioned embodiment and its modified examples and effects obtained thereby will be described.

[0164] (Technical Solution 1) The hair clipper 1 shown in the above-mentioned embodiment and its modified example includes a rotary motor 6, which has a rotary shaft 62 extending in the Z direction (i.e., the first direction and the up-down direction) and a motor driving unit 61 capable of driving the rotary shaft 62 to rotate. In addition, the hair clipper 1 includes: a conversion mechanism (e.g., an eccentric cam 8) connected to the rotary shaft 62 and capable of converting the rotary motion of the rotary shaft 62 into a reciprocating linear motion; a movable blade 3222 connected to the conversion mechanism (e.g., the eccentric cam 8) and capable of reciprocating linear motion; and a fixed blade 3122, with which the movable blade 3222 can slide.

[0165] Furthermore, the hair clipper 1 includes a bearing portion 612 provided in the motor driving portion 61 and supporting the rotating shaft 62 with a gap 63 provided between the bearing portion 612 and the peripheral surface 621 of the rotating shaft 62 .

[0166] Furthermore, the hair clipper 1 includes: an axis abutment portion 72, which presses the rotating shaft 62 in at least one direction intersecting the Z direction (i.e., the first direction and the up-down direction), and limits the axis jitter of the rotating shaft 62 during rotation caused by the gap 63 while allowing the rotation of the rotating shaft 62; and a supporting portion (more specifically, the main body 71 and the second split shell 42), which supports the axis abutment portion 72.

[0167] As described above, in the above-described embodiment and its modified example, the shaft vibration of the rotating shaft 62 during rotation caused by the gap 63 is restricted by the shaft contact portion 72 .

[0168] In this way, the rotating shaft 62 can be rotated while the shaft vibration is suppressed, so the interference between the rotating shaft 62 and the bearing 612 caused by the shaft vibration can be more reliably suppressed. As a result, the generation of abnormal sound due to the interference between the rotating shaft 62 and the bearing 612 during the shaft vibration can be suppressed, and the hair clipper 1 can be used in a silent manner.

[0169] As described above, according to the hair clipper 1 described in the above-described embodiment and its modified example, it is possible to more reliably suppress the generation of abnormal sounds when the hair clipper 1 is used, and it is possible to achieve quietness when the hair clipper 1 is used.

[0170] (Technical Solution 2) In addition, in the above-mentioned (Technical Solution 1), the supporting part (more specifically, the main body 71) may be integrated with the motor drive part 61, and the motor drive part 61, the supporting part (more specifically, the main body 71) and the shaft abutment part 72 constitute at least a part of the motor module 5.

[0171] In this way, if the motor driving part 61, the supporting part (more specifically, the main body 71) and the shaft contact part 72 constitute at least a part of the motor module 5, a separate motor module 5 can be formed (more specifically, the motor module 5 is set in a state where the shaft contact part 72 presses the rotating shaft 62 when it is not installed in the housing 4 of the hair clipper 1). In this way, it is easier to adjust the pressing force of the shaft contact part 72 on the rotating shaft 62, and the quality and effect of the motor module 5 can be stabilized.

[0172] Furthermore, when the hair clipper 1 is manufactured by installing such a motor module 5 in the housing 4, the pressing force of the shaft contact portion 72 on the rotating shaft 62 does not change due to an assembly error of the rotating motor 6 relative to the housing 4, as in the case where the shaft contact portion 72 presses the rotating shaft 62 when the rotating motor 6 is assembled to the housing 4. Therefore, the hair clipper 1 that can achieve quietness during use can be obtained more easily and reliably.

[0173] (Technical Solution 3) In addition, in the above (Technical Solution 2), the peripheral surface 621 of the rotating shaft 62 may be in contact with the bearing portion 612 in a state where the support portion (main body portion 71) and the motor drive portion 61 are integrated.

[0174] In this way, the rotating shaft 62 can be rotated while being clamped by the shaft abutment portion 72 and the bearing portion 612. Therefore, when the rotating shaft 62 is rotated during use of the hair clipper 1, the shaft vibration of the rotating shaft 62 can be more reliably suppressed. As a result, further silencing can be achieved during use of the hair clipper 1.

[0175] (Technical Solution 4) In addition, in the above (Technical Solution 2), the hair clipper 1 may also have a pair of shaft abutment portions 72, and the rotating shaft 62 is clamped by the pair of shaft abutment portions 72 when the supporting portion (more specifically, the main body 71) and the motor driving portion 61 are integrated.

[0176] Thus, the rotating shaft 62 can be rotated while being clamped by the pair of shaft abutment portions 72, so when the rotating shaft 62 is rotated during use of the hair clipper 1, the shaft vibration of the rotating shaft 62 can be more reliably suppressed. As a result, further silencing can be achieved during use of the hair clipper 1.

[0177] (Technical Solution 5) In addition, in any one of the technical solutions described above (Technical Solution 1) to (Technical Solution 4), the shaft abutment portion 72 may be a beam portion 721 extending in a direction intersecting the Z direction (ie, the first direction and the up-down direction).

[0178] In this way, the contact area between the shaft contact portion 72 and the rotating shaft 62 can be minimized, so that the load acting on the rotating motor 6 when the rotating shaft 62 is rotated can be suppressed from increasing. As a result, the continuous operation time of the rotating motor 6 at a predetermined electrical capacity (for example, the electrical capacity of the fully charged rechargeable battery 91, etc.) can be relatively long.

[0179] (Technical Solution 6) In addition, in the above (Technical Solution 5), the beam portion 721 may be formed as a beam structure with both ends supported.

[0180] This can more reliably suppress the beam 721 from being bent due to the reaction force from the rotating shaft 62, and thus more reliably suppress the rotating shaft 62 from vibrating when the rotating shaft 62 is rotated. As a result, the hair clipper 1 can be used more quietly.

[0181] (Technical Solution 7) In addition, in the above-mentioned (Technical Solution 5), the beam portion 721 may be formed as a cantilever beam structure.

[0182] In this way, the beam portion 721 can be configured to be more easily elastically deformed, so that dimensional errors of the motor module member 7 and the like can be absorbed by the elastic deformation of the beam portion 721. As a result, the motor module 5 can be formed more easily.

[0183] (Technical Solution 8) In addition, in any one of the technical solutions mentioned above (Technical Solution 5) to (Technical Solution 7), the direction in which the beam portion 721 extends (i.e., the X direction, the third direction, and the front-to-back direction) may be orthogonal to the direction in which the movable blade 3222 reciprocates in a linear motion (i.e., the Y direction, the second direction, and the width direction).

[0184] Thus, the rotating shaft 62 is pressed by the beam portion 721 in the Y direction (ie, the second direction and the width direction), so that the rotating shaft 62 can be more reliably suppressed from moving in the Y direction (ie, the second direction and the width direction) (eg, causing shaft vibration).

[0185] It should be noted that most of the force applied to the rotating shaft 62 when the movable blade 3222 is reciprocated linearly in the Y direction (i.e., the second direction and the width direction) becomes a force intended to move the rotating shaft 62 in the Y direction (i.e., the second direction and the width direction) (e.g., a force intended to generate shaft vibration). Therefore, if the beam 721 is extended in a direction orthogonal to the direction of the reciprocating linear motion of the movable blade 3222 (i.e., the Y direction, the second direction, and the width direction), the beam 721 can be used to more efficiently bear the force applied to the rotating shaft 62 when the movable blade 3222 is reciprocated linearly.

[0186] Therefore, if the beam portion 721 is extended in a direction orthogonal to the direction of the reciprocating linear motion of the movable blade 3222 (i.e., the Y direction, the second direction and the width direction), the movement of the rotating shaft 62 in the Y direction (i.e., the second direction and the width direction) can be further reliably suppressed (e.g., causing shaft shaking).

[0187] In addition, if the movement (e.g., shaft vibration) of the rotating shaft 62 in the Y direction (i.e., the second direction and the width direction) when the movable blade 3222 is reciprocated linearly can be suppressed, the amplitude reduction of the movable blade 3222 can be suppressed. And, if the reduction of the amplitude of the movable blade 3222 can be suppressed, there is an advantage that the cutting ability of the movable blade 3222 and the fixed blade 3122 for hair can be further improved.

[0188] (Technical Solution 9) In addition, in any one of the technical solutions mentioned above (Technical Solution 1) to (Technical Solution 8), a recessed portion 72111 may be formed on the surface of the shaft abutment portion 72 that is in sliding contact with the peripheral surface 621 (i.e., the sliding contact surface 7211).

[0189] In this way, lubricating oil such as grease can be retained in the recessed portion 72111, and the lubricating oil retained in the recessed portion 72111 can be supplied little by little to the rotating shaft 62. As a result, the friction generated between the rotating shaft 62 and the shaft contact portion 72 can be reduced for a longer period of time. In other words, the friction reduction structure between the rotating shaft 62 and the shaft contact portion 72 can be maintained for a longer period of time.

[0190] (Technical Solution 10) In addition, in any one of the technical solutions mentioned above (Technical Solution 1) to (Technical Solution 9), the supporting portion (more specifically, the main body 71 and the second split shell 42) may have a mounting portion 711 mounted on the motor drive portion 61.

[0191] In this way, a separate motor module 5 can be formed (more specifically, the motor module 5 is set in a state where the shaft contact portion 72 presses the rotating shaft 62 when the motor module 5 is not installed in the housing 4 of the hair clipper 1), so it is easier to form the motor module 5. In addition, the quality and effect of the motor module 5 can be stabilized.

[0192] (Technical Solution 11) In addition, in the above-mentioned (Technical Solution 10), the motor driving unit 61 may further include a motor body 611, and the bearing portion 612 may be formed to protrude from the motor body 611 in the Z direction (i.e., the first direction and the up-down direction). Furthermore, the mounting portion 711 may include an annular portion 7111 having an insertion hole 71111 formed therein for inserting the bearing portion 612.

[0193] In this manner, the main body 71 can be mounted on the motor driving portion 61 simply by inserting the bearing portion 612 into the insertion hole 71111 , so that the shaft contact portion 72 can be arranged at a proper position more easily.

[0194] (Technical Solution 12) In addition, in the above-mentioned (Technical Solution 10), the motor driving unit 61 may further include a motor body 611, and the bearing portion 612 may be formed to protrude from the motor body 611 in the Z direction (i.e., the first direction and the up-down direction). In addition, the mounting portion 711 may include a C-shaped portion 73, and the C-shaped portion 73 is mounted on the bearing portion 612 in a state where the pair of top ends 7321 are separated in the circumferential direction.

[0195] In this way, the main body 71 can be attached and detached from the motor drive unit 61 while the eccentric cam 8 (i.e., an example of the conversion mechanism) is connected to the rotating shaft 62. In this way, if the conversion mechanism (e.g., the eccentric cam 8) is connected to the rotating shaft 62 before the main body 71 is mounted on the motor drive unit 61, the motor module component 7 will not be displaced relative to the rotary motor 6 or damaged when the conversion mechanism (e.g., the eccentric cam 8) is connected to the rotating shaft 62, so that the quality and effect of the hair clipper 1 can be stabilized.

[0196] (Technical Solution 13) In addition, in any one of the technical solutions mentioned above (Technical Solution 1) to (Technical Solution 12), the supporting portion (more specifically, the main body 71 and the second split shell 42) may have a fixing protrusion 712 (i.e., an example of a fixing portion), and the fixing protrusion 712 is fixed to a fixing hole 6111a (i.e., an example of a fixed portion) formed in the motor drive portion 61.

[0197] In this way, the motor module member 7 (more specifically, the main body 71 and the shaft contact portion 72) can be prevented from being displaced relative to the motor drive portion 61, so that the shaft contact portion 72 can more reliably limit the shaft vibration of the rotating shaft 62 during rotation caused by the gap 63. As a result, the hair clipper 1 can be more reliably used in a silent manner.

[0198] In addition, since the motor module member 7 (more specifically, the main body 71 and the shaft contact portion 72) can be positioned relative to the motor drive unit 61, the shaft contact portion 72 can be more easily and reliably arranged at a proper position when the main body 71 and the motor drive unit 61 are integrated. As a result, the quality and effect of the motor module 5 can be stabilized.

[0199] (Technical Solution 14) In addition, in any one of the technical solutions of (Technical Solution 1), (Technical Solution 3) to (Technical Solution 12), it is also possible to further include a housing 4 having a motor holding portion 424 that holds the rotary motor 6. In addition, it is also possible that the support portion (more specifically, the second split housing 42) is formed on the housing 4.

[0200] In this way, it is not necessary to prepare the motor module member 7 separately from the housing 4 , so that it is possible to simplify the structure and reduce the cost while achieving quietness when the hair clipper 1 is used.

[0201] (Technical Solution 15) In addition, the motor module 5 shown in the above-mentioned embodiment and its modified example is used in the hair clipper 1 shown in any one of the technical solutions of (Technical Solution 2) to (Technical Solution 13).

[0202] By using such a motor module 5 , it is possible to achieve quieter operation when the hair clipper 1 is used.

[0203] [other]

[0204] The hair clipper and the motor module used in the hair clipper of the present invention have been described above, but it is obvious to those skilled in the art that the hair clipper is not limited to these descriptions and various modifications and improvements can be made.

[0205] For example, the present invention can be applied to embodiments in which the configurations described in the above-described embodiments and their modifications are modified, replaced, added, omitted, etc. In addition, each component described in the above-described embodiments and their modifications can be combined to form a new embodiment.

[0206] In the above-mentioned embodiment and its modified example, the shaft contact portion 72 extending in one direction is exemplified, but it can also be a bent shaft contact portion or a curved shaft contact portion. In addition, the shape of the shaft contact portion 72 can also be set to various shapes.

[0207] In addition, the shapes of the fixing portion and the fixed portion can be various shapes.

[0208] Furthermore, the specifications of the rotary electric motor, the conversion mechanism, and other details (for example, shape, size, layout, etc.) may be appropriately changed.

[0209] Industrial Applicability

[0210] As described above, the hair clipper and the motor module used in the hair clipper of the present invention can achieve quietness during use, and therefore are not limited to hair processing, but can also be applied to processing various body hair of humans, animals, etc.

Claims

1. A hair clipper, wherein: This hair clipper has: A rotary motor having a rotary shaft extending in a first direction and a motor driving unit capable of driving the rotary shaft to rotate; a conversion mechanism connected to the rotating shaft and capable of converting the rotational motion of the rotating shaft into reciprocating linear motion; A movable blade connected to the conversion mechanism and capable of reciprocating linear motion; a fixed blade with which the movable blade can be in sliding contact; a bearing portion provided at the motor drive portion, the bearing portion supporting the rotating shaft with a gap provided between the bearing portion and a peripheral surface of the rotating shaft; a shaft contact portion that presses the rotating shaft in at least one direction intersecting the first direction, and restricts shaft vibration of the rotating shaft caused by the gap during rotation while allowing the rotating shaft to rotate; and A support portion supports the shaft contact portion.

2. The hair clipper according to claim 1, wherein: The support portion is integrated with the motor drive portion, The motor drive portion, the support portion, and the shaft contact portion constitute at least a portion of a motor module.

3. The hair clipper according to claim 2, wherein: In a state where the support portion and the motor drive portion are integrated, the peripheral surface is in contact with the bearing portion.

4. The hair clipper according to claim 2, wherein: The hair clipper comprises a pair of shaft abutment parts. In a state where the support portion and the motor drive portion are integrated, the rotating shaft is sandwiched by the pair of shaft contact portions.

5. The hair clipper according to any one of claims 1 to 4, wherein: The shaft contact portion is a beam portion extending in a direction intersecting the first direction.

6. The hair clipper according to claim 5, wherein: The beam portion is formed into a beam structure with both ends supported.

7. The hair clipper according to claim 5, wherein: The beam portion is formed in a cantilever beam structure.

8. The hair clipper according to claim 5, wherein: The beam portion extends in a direction that is orthogonal to a direction in which the movable blade reciprocates linearly.

9. The hair clipper according to any one of claims 1 to 4, wherein: A recessed portion is formed on a surface of the shaft contact portion that comes into sliding contact with the peripheral surface.

10. The hair clipper according to any one of claims 1 to 4, wherein: The support portion includes a mounting portion that is mounted on the motor drive portion.

11. The hair clipper according to claim 10, wherein: The motor driving unit further includes a motor body. The bearing portion is formed to protrude from the motor body in the first direction. The mounting portion has an annular portion having an insertion hole formed therein into which the bearing portion is inserted.

12. The hair clipper according to claim 10, wherein: The motor driving unit further includes a motor body. The bearing portion is formed to protrude from the motor body in the first direction. The mounting portion includes a C-shaped portion mounted on the bearing portion in a state where a pair of distal ends are spaced apart in the circumferential direction.

13. The hair clipper according to any one of claims 1 to 4, wherein: The support portion includes a fixing portion fixed to a fixed portion formed in the motor driving portion.

14. The hair clipper according to claim 1, wherein: The hair clipper further comprises a housing having a motor holding portion for holding the rotary motor. The support portion is formed on the housing.

15. A motor module, wherein: The motor module is used in the hair clipper according to any one of claims 2 to 4.

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