JP5964690B2 - Electric razor - Google Patents

Description

  The present invention relates to an electric razor in which a razor head is supported so as to be at least horizontally tiltable with respect to a main body and further includes a sharp shaving blade.

  In an electric razor equipped with a sharp shaving blade, reciprocating power is transmitted to the movable blade of the sharp shaving blade only when the sharp shaving unit is switched to the use position, and this waste of power is avoided. This transmission structure can be found in, for example, Patent Document 1. Specifically, an inverted L-shaped transmission arm that reciprocates in conjunction with the inner blade drive shaft is provided on the razor head side, and the power of the transmission arm is relayed to the movable blade on the side of the shaving unit. A drive arm is provided. When the sharp shaving unit is switched to the use position, the passive pin provided at the lower end of the drive arm rises and engages with the drive groove provided at the lower end of the transmission arm, inheriting the reciprocating motion of the transmission arm and transmitting to the movable blade it can.

  In the present invention, when the shaving unit is used, the razor head is restrained from tilting left and right with respect to the main body to improve the transmission efficiency of the reciprocating power. This type of electric razor is known in Patent Document 2. It is. There, the blade frame that supports the outer blade is composed of a first blade frame that is mounted on the main body, and a second blade frame that is supported by the same frame so that it can be tilted left and right and slidable up and down. In a state in which the trimmer blade is switched to the use posture with the slide operation piece, the swing prevention piece can receive the upper end inner surface of the second blade frame and can regulate the swing of the second blade frame and the vertical slide. The rocking prevention piece is provided on a holder that supports the trimmer blade, and can move up and down along with the slide operation piece and the vertical slide of the trimmer blade. In many cases, the slide operation piece is held in a non-use position and a use position by a moderation structure.

JP 2010-075229 (paragraph 0046, FIG. 11) Japanese Patent Laying-Open No. 2005-304793 (paragraph 0016, fifth sentence, FIG. 3)

  According to the electric razor of Patent Document 2, it is possible to restrict the razor head from swinging back and forth and from side to side or sliding up and down with respect to the main body when using the shaving unit. Therefore, as compared with an electric razor not provided with this kind of tilt restricting structure, the reciprocating power of the main inner blade is more reliably transmitted, and the power transmission efficiency can be improved. However, the movement of the second blade frame is restricted simply by receiving the upper end inner surface of the second blade frame by the rocking prevention piece, so that the vertical slide can be restricted. As for back and forth rocking, there is a high possibility of rattling, and it is difficult to efficiently transmit power to the trimmer blade if rattling occurs.

  An object of the present invention is to provide an electric razor capable of efficiently transmitting power to a movable blade by restricting the razor head from tilting left and right with respect to the main body when using a shaving unit. is there.

  The electric razor according to the present invention is an electric razor in which a razor head 2 is supported so as to be at least horizontally tiltable with respect to the main body 1 and a shaving unit 6 is disposed around the main body 1. The reciprocating power on the razor head 2 side is transmitted to the movable blade 48 of the shaving unit 6 via the transmission mechanism in a state where the shaving unit 6 is switched from the standby posture to the use posture. In the state where the shaving unit 6 is switched to the use posture by the unit operation body 83, a regulation structure for regulating the displacement of the razor head 2 with respect to the main body 1 is provided. The regulation structure includes a rod-shaped regulation body 84 and a regulation body. 84, a hole-shaped or groove-shaped regulation guide 86 is engaged, one of which is provided on the unit operating body 83 side and the other is provided on the razor head 2 side. The unit operation body 83 includes an operation knob 83 that is slidably supported by the main body 1, and in a state where the shaving unit 6 is switched to the use posture by the operation knob 83, the restriction body 84 and the restriction guide 86. And the right and left tilting of the razor head 2 is restricted.

  An engagement guide surface 87 is formed at the engagement start end of at least one of the regulation body 84 and the regulation guide 86.

  In a state where the shaving unit 6 is switched to the use posture with the operation knob 83, the razor head 2 is pulled toward the shaving unit 6 by the regulating body 84 or the regulating guide 86.

  In the electric razor according to the present invention, when the shaving unit 6 is used, the razor head 2 is tilted to the left and right with respect to the main body 1 by the regulating structure, so that power between the razor head 2 and the shaving unit 6 is limited. The power loss in the transmission portion can be suppressed, and therefore the reciprocating power can be efficiently transmitted to the movable blade 48 of the shaving unit 6.

  Further, since the restricting structure is composed of a rod-like restricting body 84 and a hole- or groove-like restricting guide 86 with which the restricting body 84 is engaged, transmission of reciprocating power to the movable blade 48 of the shaving unit 6 is performed. Can be performed more efficiently. This is because the rod-shaped regulating body 84 is inserted into the hole-shaped or groove-shaped regulating guide 86, so that the forward / backward tilt can be controlled simultaneously with the left / right tilt. That is, in addition to tilting left and right, tilting back and forth can be regulated without rattling, and transmission loss can be prevented accordingly. Of course, with this structure, even the razor head 2 capable of tilting in all directions can regulate tilting in all directions. This is because the restriction guide 86 fitted on the restriction body 84 can restrict the displacement of the restriction body 84 in all directions.

  If the engagement guide surface 87 is formed at the engagement start end of at least one of the regulation body 84 and the regulation guide 86, the center position of the regulation body 84 and the regulation guide 86 may be shifted. The restricting body 84 and the restricting guide 86 can be engaged while correcting the misalignment by the joint guide surface 87. Therefore, even when the razor head 2 is slightly tilted left and right from the neutral position, the right and left tilt of the razor head 2 can be reliably regulated by engaging the regulating body 84 and the regulating guide 86 without any trouble.

  In a state where the shaving unit 6 is switched to the use posture with the operation knob 83, the razor head 2 is pulled toward the scraping unit 6 side by the regulating body 84 or the regulating guide 86. As a result, the entire razor head 2 can be restrained from being tilted in a state where the entire razor head 2 is brought close to the shaving unit 6. Therefore, rattling between the drive shaft 38 for the shaving unit of the transmission mechanism and the passive arm 49 can be suppressed, and the transmission efficiency of the reciprocating power between the razor head 2 and the shaving unit 6 can be further improved. For example, in the case of the restricting body shown in FIG. 1, the center axis of the engaging shaft 84 a of the restricting body 84 is slightly positioned with respect to the shaving unit 6 side (rear side) with respect to the hole center axis of the restricting guide 86. The regulation guide 86 can be pulled by the regulation body 84 by being shifted.

It is a vertical side view which shows the tilt control structure which concerns on Example 1. FIG. It is a vertical front view which shows the swing structure which concerns on Example 1. FIG. It is a vertical side view which shows the control state of the tilt control structure which concerns on Example 1. FIG. It is a vertical side view which shows the tilt control structure which concerns on Example 2. FIG. It is a vertical side view which shows the tilt control structure which concerns on Example 3. FIG. It is a vertical side view which shows the control state of the tilt control structure which concerns on Example 3. FIG. It is a vertical side view which shows the tilt control structure which concerns on Example 4. FIG. It is a vertical side view which shows the control state of the tilt control structure which concerns on Example 4. FIG.

  (Embodiment 1) FIGS. 1 to 3 show an embodiment of an electric shaver according to the present invention. In the present invention, “front / rear”, “left / right”, and “upper / lower” refer to the cross arrows shown in FIGS. In FIG. 2, the electric razor is composed of a main body 1 that also serves as a grip, and a razor head 2 that is incorporated in the main body 1. The switch panel on the front surface of the main body 1 is provided with a switch knob (switch operating tool) 4 for starting the motor and a display unit for displaying the operating state of the electric razor. A shaving unit 6 is provided on the rear surface (back surface) of the main body 1. The wrinkle shaving unit 6 is mainly used for trimming the side portions and the hairline, but it can also be used for cutting long hairs and hairs growing on the chin, for example.

  The main body 1 has an outer case 5 and an inner case 9 provided inside the outer case 5. A switch panel is provided on the front surface of the outer case, and a shaving unit 6 is provided on the rear surface. A circuit board and a secondary battery are incorporated in the inner case 9. The circuit board includes switches that are switched by the previous switch knob 4, electronic components that constitute a control circuit, and a display unit. Four LEDs that are light sources are mounted. When the switch knob 4 is slid upward, the motor 14 can be started by switching the switch to the ON state.

  As shown in FIGS. 1 and 2, the razor head 2 is attached to and detached from the head base 13, the head support 10, the cutting blade portion 11 including three cutting blades, and the head support 10. The blade holder 12 is used. The head support 10 is fixed to a head base 13 that also serves as a vibrator case. The head base 13 can be tilted to the left and right and back and forth by a swing mechanism together with a motor 14 and a motor holder 15 fixed to the lower surface of the head base 13. It is supported movably. In this embodiment, idler legs 17 provided on the left and right sides of the motor holder 15 are supported by the annular frame 9 a of the inner case 9, and an idler spring 18 comprising a compression coil spring is disposed between the motor holder 15 and the inner case 9. Thus, the entire razor head 2 was supported so as to be able to tilt left and right and back and forth and up and down. An engaging claw 17a that is received by the annular frame 9a is provided at the lower end of the free leg 17. The electrical component unit including the motor 14 and the circuit board is sealed with a seal body 16 provided between the head base 13 and the inner case 9 (see FIGS. 1 and 2). As the swing mechanism, a tilting gap formed between the main body 1 and the razor head 2 can be narrowed so that it can tilt left and right and move up and down without tilting back and forth. If the razor head 2 can be tilted left and right or / and tilted back and forth with respect to the main body 1, the razor head 2 can follow the skin surface change. Therefore, it is possible to follow the cutting blade portion 11 of the razor head 2 in a state where it is always in close contact with the skin, and the beard can be effectively cut. If the razor head 2 can move up and down with respect to the main body 1, the razor head 2 can follow the unevenness of the skin. Therefore, the cutting blade portion 11 of the razor head 2 can always be brought into close contact with the skin with an appropriate pressing force, and the burden on the skin can be reduced.

  Each cutting blade constituting the cutting blade portion 11 includes a first cutting blade 20 for finishing shaving, a second cutting blade 21 for rough shaving, and a third cutting blade 22 for finishing shaving, and the razor head 2. They are arranged in the order of description from the rear side to the front side. The second cutting blade 21 for rough shaving is provided mainly for cutting long hairs and wrinkles, and both of the fixed blade 27 and the movable blade 28 are formed by slit blades. The first shaving blade 20 and the third cutting blade 22 for finishing shaving are provided for finishing and cutting short hairs, both of which are fixed blades 25 and 29 formed of mesh blades, and movable blades 26 and 30 are provided. It is formed with a slit blade.

  In order to drive the movable blades of the cutting blades 20 to 22 provided on the razor head 2, the rotational power of the motor 14 is converted into reciprocating power between the motor 14 and the movable blades 26, 28, and 30. A drive structure that transmits power to the movable blades 26, 28, and 30 is provided. As shown in FIG. 1, the drive structure includes an eccentric cam 31 fixed to the output shaft of the motor 14, two vibrators 32 driven in opposite directions by the eccentric cam 31, and the vibrators 32 and 32. The reciprocating power is constituted by three drive shafts that transmit the reciprocating power to the movable blades 26, 28, and 30.

  The drive shaft drives the first drive shafts 35 and 37 that drive the movable blade 26 of the first cutting blade 20 and the movable blade 30 of the third cutting blade 22, and the movable blade 28 of the second cutting blade 21. 2 drive shafts 36. The first drive shafts 35 and 37 are formed integrally with the vibrators 32 and 32, and the second drive shaft 36 is fixed to the first drive shaft 37. The rear vibrator 32 is integrally provided with a third drive shaft (drive shaft for the shaving unit) 38 that transmits reciprocating power to the shaving unit 6 (see FIG. 3). The third drive shaft 38 extends rearward from the rear vibrator 32, and a connecting piece 39 having a U-shaped cross section is integrally formed at the lower end thereof. Inside the first drive shafts 35 and 37, inner blade springs that push up and urge the movable blades 26 and 30 are arranged. In FIG. 2, reference numeral 41 denotes a release button for unlocking a claw that locks and holds the mounting state of the fixed blade holder 12.

  The head support 10 is composed of a frame surrounding the upper peripheral surface of the head base 13, and its upper surface is covered with a cover. The cover is formed with an output opening for projecting the first drive shafts 35 and 37, and a gap between the opening and the first drive shafts 35 and 37 is closed with a vibrator packing, and the like. Is prevented from entering the inside of the head base 13. A space surrounded by the upper surface of the cover and the fixed blade holder 12 is a fouling storage space.

  In FIG. 1, the shaving unit 6 is configured by incorporating a fixed blade 47 and a movable blade 48 having a clipper blade structure and a passive arm 49 inside a shaving case 46. The movable blade 48 and the passive arm 49 are connected to each other, and both are supported by the shaving case 46 so as to be capable of reciprocating in the left-right direction. The sharp shaving unit 6 is disposed inside a rectangular mounting portion 51 provided on the upper rear surface of the main body portion 1, and the upper and left sides thereof are supported by a pair of support shafts 52, thereby waiting as shown in FIG. 1. It can swing between the position and the use position shown in FIG. In order to switch the shaving unit 6 from the standby posture to the use posture, an operation knob (unit operating body) 83 that is slidable up and down is provided at the bottom of the shaving unit 6. As shown in FIG. 3, when the operation knob 83 is pushed up, the shaving unit 6 can be swung upward and the unit 6 can be held in a use posture. When the operation knob 83 is pushed down, the shaving unit 6 can be swung downward to return the unit 6 to the standby position. In the state where the shaving unit 6 is switched from the standby posture to the use posture, the reciprocating power on the razor head 2 side is a transmission mechanism comprising a third drive shaft (drive shaft for the shaving unit) 38 and a passive arm 49. To the movable blade 48. The transmission mechanism is a constantly driven transmission structure in which the reciprocating power is transmitted from the razor head 2 side to the shaving unit 6 not only when the shaving unit 6 is in the use position but also when in the standby position. There may be.

  As described above, in the electric razor provided with the swing mechanism capable of at least laterally tilting and moving up and down, the transmission efficiency of the reciprocating power from the third drive shaft (drive shaft for the shaving unit) 38 to the passive arm 49 is large. For example, when the hair bundle is sandwiched between the cutting blades of the shaving unit 6 and a large load is applied, only the razor head 2 moves left and right due to the reaction of the load. This is because the movable blade 48 cannot be driven. Further, the lateral movement of the razor head 2 occurs not a little even when the load on the cutting blade of the shaving unit 6 is small, and the transmission efficiency of the reciprocating power from the third drive shaft 38 to the passive arm 49 decreases. Inevitable.

  In order to eliminate the transmission loss of the reciprocating power between the third drive shaft (drive shaft for the shaving unit) 38 and the passive arm 49 as described above, the razor head is used when the shaving unit 6 is used. 2 can be prevented from tilting left and right with respect to the main body 1.

  A restriction structure is provided between the operation knob 83 and the razor head 2 in order to restrict the displacement of the razor head 2 relative to the main body 1 in the state where the shaving unit 6 is switched to the use posture. The regulation structure in this embodiment is a regulation guide comprising a pair of left and right L-shaped regulation bodies 84 provided integrally with the operation knob 83 and vertical through holes provided in the left and right fastening boss portions 85 of the motor holder 15. 86. The restriction body 84 is provided with a bar-like engagement shaft 84a that is long in the vertical direction. An engagement guide surface 87 that facilitates the engagement of the engagement shaft 84a is formed in the lower end opening of the restriction guide 86. It is formed in a taper shape (mortar shape). The shaft center of the engagement shaft 84a is provided in a state of being slightly displaced toward the shaving unit 6 side (rear side) with respect to the hole center of the regulation guide 86. As a form of displacement, either the case where the axis center of the engagement shaft 84a is displaced in parallel with the hole center axis of the restriction guide 86, or the case where the shaft center of the engagement shaft 84a is slightly tilted backward. It may be. The motor holder 15, the fastening boss portion 85 (restriction guide 86), and the idler leg 17 are integrally formed. The restriction guide 86 is formed of a hole having a circular cross section, and the engagement shaft 84a of the restriction body 84 is formed of a rod-shaped body having a circular cross section having a diameter slightly smaller than the hole diameter of the restriction guide 86. Further, the shape of the hole of the restriction guide 86 can be changed variously as long as it has the restriction ability even if a part of the hole is opened or a slit arranged at a distance is formed around the hole. . Further, the rod-like body of the restricting body 84 is not limited to the long-axis-like rod having the shaft length larger than the rod diameter as in the embodiment, and the rod-like body of the rod is longer than the rod shaft length. This is a concept including a form having a larger diameter. In this embodiment, the operation knob 83 and the restricting body 84 are integrally formed of plastic. However, the restricting body 84 formed as an independent part is engaged and fixed to the operation knob 83, and is fixed by welding. Alternatively, the structure may be integrated by fastening and fixing. For example, after a metal restriction body 84 is insert-molded into the operation knob 83 or a through hole is provided on one end side of the metal restriction body 84 and a protrusion formed on the operation knob 83 side is inserted into the through hole. Various configurations such as welding and fixing are conceivable.

  When the operation knob 83 is in the lower standby position, the upper end of the engagement shaft 84a is opposed to the engagement guide surface 87 below the fastening boss portion 85 with a gap therebetween. Can be tilted up and down. At this time, the distance between the lower end opening edge of the restriction guide 86 and the upper end of the engagement shaft 84a and the vertical movement stroke H1 of the razor head 2 are the same 3 mm. As shown in FIG. 1, when the operation knob 83 is pushed up from the standby position to the use position, the shaving unit 6 is switched to the use posture, and the passive arm 49 is driven by the third drive shaft (drive for the shaving unit). Axis) 38. Further, the engaging shaft 84a of the restricting body 84 is guided by the engaging guide surface 87 and engaged with the restricting guide 86, thereby restricting the razor head 2 from tilting left and right and tilting back and forth. In addition, since the shaft center of the engagement shaft 84a is shifted rearward with respect to the hole center shaft of the restriction guide 86, the motor holder 15 is moved in a state where the engagement shaft 84a is engaged with the restriction guide 86. The razor head 2 can be constrained in a state in which the entire razor head 2 is close to the shaving unit 6 by being pulled toward the shaving unit 6 side. Therefore, rattling between the third drive shaft 38 of the transmission mechanism and the passive arm 49 can be suppressed, and the power transmission efficiency between the two 38 and 49 can be improved. Even in this restricted state, the razor head 2 can move up and down. Thus, while allowing the razor head 2 to move up and down while restricting left and right tilt and back and forth tilt, even when using both the beard cutting by the cutting blade portion 11 and the beard cutting by the shaving unit 6, An unreasonable external force acting on the cutting blade portion 11 can be released. Therefore, it is possible to prevent the shaving unit 6 from being inadvertently put into a standby posture (unusable state). The restriction guide 86 is not limited to the through hole. When the shaving unit 6 is switched to the use position and the right / left and forward / backward tilt of the razor head 2 is restricted, if there is a hole distance that allows the razor head 2 to move up and down, it is a bag-like (dead end) hole. Also good.

  The operation knob 83 and the regulating body 84 move upward from the standby position by a distance (vertical slide stroke) H2 to switch the shaving unit 6 to the use posture. The slide stroke H2 at this time is 5 mm. As described above, the vertical movement stroke H1 of the razor head 2 with respect to the main body 1 is set to be smaller than the vertical sliding stroke H2 of the operation knob 83. Therefore, the razor head 2 moves up and down when shaving with the cutting blade 11. The razor head 2 does not contact and interfere with the regulating body 84. Note that the vertical movement stroke H1 of the razor head 2 is set slightly smaller than the distance between the lower end opening edge of the restriction guide 86 and the upper end of the engagement shaft 84a when the operation knob 83 is in the lower standby position. It is more preferable that the razor head 2 that moves up and down can be reliably prevented from coming into contact with the restricting body 84.

  (Embodiment 2) In Embodiment 1, a long rod-shaped restricting body 84 is provided on the operation knob 83 and a hole-like restricting guide 86 is provided on the razor head 2 side. However, as shown in FIG. can do. Specifically, a round bar-shaped restricting body 84 extending downward is integrally provided on the left and right of the fastening boss portion 85 of the motor holder 15, and the boss 88 is integrally provided on the left and right of the inner surface of the operation knob 83. A regulation guide 86 can be provided. At the upper end opening of the regulation guide 86, an engagement guide surface 87 having a tapered shape (conical shape) is formed. Thus, the regulating body 84 and the regulating guide 86 may be provided on either side of the razor head 2 or the operation knob 83. Also in this embodiment, similarly to the first embodiment, the restriction guide 86 and the restriction body 84 are engaged with each other by shifting the hole center of the restriction guide 86 to the rear side with respect to the axial center of the restriction body 84. In this state, the motor holder 15 can be pulled toward the shaving unit 6 so that the entire razor head 2 can be restrained in the state of approaching the shaving unit 6. As a result, rattling between the third drive shaft (drive shaft for the shaving unit) 38 of the transmission mechanism and the passive arm 49 is suppressed, and the power transmission efficiency between the two 38 and 49 is improved. Can do. Second Embodiment In the following embodiments, the same reference numerals as those in the first embodiment are interpreted as members having the same functions.

  (Embodiment 3) FIGS. 5 and 6 show Embodiment 3 according to the present invention. In the electric razor according to the third embodiment, as in the first embodiment, the entire razor head 2 is supported by a swing mechanism (not shown) so as to be able to tilt left and right and back and forth and to be movable up and down. The shaving unit 6 is supported by the main body 1 so as to be slidable up and down between a lower standby position and an upper use position. A shaving case 46 is fixed to the upper end of the operation knob 83, and a fixed blade 47 and a movable blade 48 are arranged in a state of protruding rearward from the shaving case 46. When the operation knob 83 is pushed up, the entire shaving unit 6 moves upward and is held in a use posture, and its passive arm 49 is connected to a third drive shaft (drive shaft for the shaving unit) 38, The reciprocating power can be transmitted. As can be understood from this embodiment, the shaving unit 6 may be provided integrally with the operation knob 83 so that it slides upward along with the upward slide of the operation knob 83 and switches to the use position. The shaving unit 6 does not have to be in a form in which the shaving unit 6 is displaced in a swinging manner and switched to a use posture.

  In order to restrict the displacement of the razor head 2 relative to the main body 1 in the state where the shaving unit 6 is switched to the use posture, a pair of left and right L-shaped restriction bodies 84 are provided on the inner surface of the operation knob 83. The engaging shaft 84a of the restricting body 84 has a rectangular cross section. Further, on both the left and right sides of the motor holder 15 that accommodates the entire motor 14, there are provided restriction guides 86 each having a rectangular cross section that is long in the vertical direction, and the engagement guide surface 87 is narrowed at the lower end of the restriction guide 86. It is provided in a tapered shape. In front of and behind the lower end of the motor holder 15, a pair of left and right engaging legs 89 that define the upper limit of the razor head 2 is provided. The upper and lower positional relationship between the regulating body 84 and the regulating guide 86 is set to be the same as in the first embodiment. As described above, the restricting structure for restricting the right / left tilt and the forward / backward tilt while allowing the razor head 2 to move up and down is variously changed according to the difference in the support structure of the motor 14 and the swing structure of the razor head 2. Can be implemented. Also in this embodiment, as in the first embodiment, the axial center of the engaging shaft 84a of the restricting body 84 is shifted rearward with respect to the hole center of the restricting guide 86, as shown in FIG. As described above, in a state where the engagement shaft 84 a is engaged with the restriction guide 86, the motor holder 15 is pulled toward the shaving unit 6, and the entire razor head 2 is restrained while approaching the shaving unit 6. it can. As a result, rattling between the third drive shaft (drive shaft for the shaving unit) 38 of the transmission mechanism and the passive arm 49 is suppressed, and the power transmission efficiency between the two 38 and 49 is improved. Can do.

  (Embodiment 4) FIGS. 7 and 8 show Embodiment 4 according to the present invention. In this embodiment, the shaving unit 6 is switched from the standby position shown in FIG. 7 to the use position shown in FIG. 8 by sliding the operation knob 83 from the upper standby position to the lower use position. did. Specifically, a bracket 101 is provided on the front side of the upper end of the shaving case 46, and the operation knob 83 and the bracket 101 are connected via a link rod 102. Further, the relay lever 103 that swings up and down along with the operation knob 83, the regulating body 84 that is operated up and down by the relay lever 103, and the round hole shaped regulation guide 86 provided in the motor holder 15 constitute a regulation structure. Thus, the displacement of the razor head 2 relative to the main body 1 can be regulated. Reference numeral 104 denotes a lever shaft that rotatably supports the relay lever 103. The restricting body 84 is supported by a guide projection 105 provided on the inner case so as to be slidable only vertically.

  In the unused shaving unit 6, the shaving case 46 is in a vertical posture, and when the operation knob 83 is pushed down from this state, the operation is transmitted to the bracket 101 via the link rod 102. The shaving case 46 is switched to the horizontal use posture, and the passive arm 49 is connected to the third drive shaft (drive shaft for the shaving unit) 38. At the same time, the relay lever 103 swings in the clockwise direction, the restricting body 84 is moved upward, and the upper end thereof is engaged with the restricting guide 86 to restrict the razor head 2 from tilting left and right and back and forth. At that time, the razor head 2 can move up and down. The razor head 2 of the electric razor according to the first, second, third, and fourth embodiments does not need to tilt forward and backward, and may be supported by at least a swing mechanism that can tilt left and right.

The electric shaver according to the above embodiment can be implemented in the following manner.
The razor head 2 is supported so as to be at least horizontally tiltable with respect to the main body 1, and is an electric razor in which a shaving unit 6 is arranged around the main body 1,
The reciprocating power on the razor head 2 side is transmitted to the movable blade 48 of the shaving unit 6 via the transmission mechanism in a state where the shaving unit 6 is switched from the standby posture to the use posture.
In the state where the shaving unit 6 is switched to the use posture by the unit operating body 83, the shaving unit 6 is provided with a regulating structure that regulates the displacement of the razor head 2 with respect to the main body 1;
The restricting structure is composed of a rod-like restricting body 84 and a hole- or groove-like restricting guide 86 with which the restricting body 84 is engaged, one of which is on the unit operating body 83 side and the other of the razor head 2. On the side,
The unit operation body 83 includes an operation knob 83 supported by the main body 1 so as to be slidable up and down.
In a state where the shaving unit 6 is switched to the use posture with the operation knob 83, the restricting body 84 and the restricting guide 86 are engaged to restrict the right and left tilting of the razor head 2.
As a result, when the shaving unit 6 is used, the razor head 2 is prevented from tilting left and right with respect to the main body 1 by the regulating structure, so that the power loss in the power transmission portion between the razor head 2 and the shaving unit 6 is restricted. Therefore, it is possible to efficiently transmit the reciprocating power to the movable blade 48 of the shaving unit 6. Further, since the restricting structure is composed of a rod-like restricting body 84 and a hole- or groove-like restricting guide 86 with which the restricting body 84 is engaged, transmission of reciprocating power to the movable blade 48 of the shaving unit 6 is performed. Can be performed more efficiently. This is because the rod-shaped regulating body 84 is inserted into the hole-shaped or groove-shaped regulating guide 86, so that the forward / backward tilt can be controlled simultaneously with the left / right tilt. That is, in addition to tilting left and right, tilting back and forth can be regulated without rattling, and transmission loss can be prevented accordingly. Of course, with this structure, even the razor head 2 capable of tilting in all directions can regulate tilting in all directions. This is because the restriction guide 86 fitted on the restriction body 84 can restrict the displacement of the restriction body 84 in all directions.

In the above configuration, the engagement guide surface 87 is formed at the engagement start end of at least one of the regulation body 84 and the regulation guide 86.
Thereby, even when the center positions of the restricting body 84 and the restricting guide 86 are shifted, the restricting body 84 and the restricting guide 86 can be engaged while correcting the displacement by the engagement guide surface 87. Therefore, even when the razor head 2 is slightly tilted left and right from the neutral position, the right and left tilt of the razor head 2 can be reliably regulated by engaging the regulating body 84 and the regulating guide 86 without any trouble.

In the above configuration, the razor head 2 is pulled toward the shaving unit 6 by the regulating body 84 or the regulating guide 86 in a state where the shaving unit 6 is switched to the use posture by the operation knob 83.
As a result, the entire razor head 2 can be restrained from being tilted in a state where the entire razor head 2 is brought close to the shaving unit 6. Therefore, rattling between the drive shaft 38 for the shaving unit of the transmission mechanism and the passive arm 49 can be suppressed, and the transmission efficiency of the reciprocating power between the razor head 2 and the shaving unit 6 can be further improved. For example, in the case of the restricting body shown in FIG. 1, the center axis of the engaging shaft 84 a of the restricting body 84 is slightly positioned with respect to the shaving unit 6 side (rear side) with respect to the hole center axis of the restricting guide 86. The regulation guide 86 can be pulled by the regulation body 84 by being shifted.

In the above configuration, the razor head 2 is supported so as to be at least horizontally tiltable and vertically movable with respect to the main body 1, and is an electric razor in which the shaving unit 6 is disposed around the main body 1.
The reciprocating power on the razor head 2 side is transmitted to the movable blade 48 of the shaving unit 6 via the transmission mechanism in a state where the shaving unit 6 is switched from the standby posture to the use posture.
In the state where the shaving unit 6 is switched to the use posture by the unit operating body 83, the shaving unit 6 is provided with a regulating structure that regulates the displacement of the razor head 2 with respect to the main body 1;
The restricting structure is composed of a restricting body 84 and a restricting guide 86 that can slide relative to the restricting body 84 up and down, one of which is provided on the unit operating body 83 side and the other is provided on the razor head 2 side. And
In the state where the shaving unit 6 is switched to the use posture by the unit operation body 83, the restricting body 84 and the restricting guide 86 are engaged to restrict the right and left tilting of the razor head 2 and allow the razor head 2 to move up and down. It is characterized by comprising as follows.
As a result, when the shaving unit 6 is used, the razor head 2 is prevented from tilting left and right with respect to the main body 1 by the regulating structure, so that the power loss in the power transmission portion between the razor head 2 and the shaving unit 6 is restricted. Therefore, it is possible to efficiently transmit the reciprocating power to the movable blade 48 of the shaving unit 6. Further, since the restricting structure is composed of a rod-like restricting body 84 and a hole- or groove-like restricting guide 86 with which the restricting body 84 is engaged, transmission of reciprocating power to the movable blade 48 of the shaving unit 6 is performed. Can be performed more efficiently. This is because the rod-shaped regulating body 84 is inserted into the hole-shaped or groove-shaped regulating guide 86, so that the forward / backward tilt can be controlled simultaneously with the left / right tilt. That is, in addition to tilting left and right, tilting back and forth can be regulated without rattling, and transmission loss can be prevented accordingly. Of course, with this structure, even the razor head 2 capable of tilting in all directions can regulate tilting in all directions. This is because the restriction guide 86 fitted on the restriction body 84 can restrict the displacement of the restriction body 84 in all directions. Furthermore, since the razor head 2 is allowed to move up and down, an excessive external force acting on the cutting blade 11 even when the beard cutting by the cutting blade 11 and the beard cutting by the sharp shaving unit 6 are used together. Can escape. Therefore, it is possible to prevent the shaving unit 6 from being inadvertently put into a standby posture (unusable state).

  Depending on the electric razor, the shaving unit 6 is switched to the use posture in conjunction with turning on the switch knob (sliding knob) 4 provided on the front surface of the main body 1, and the third drive shaft (for the shaving unit) There is a structure in which the reciprocating power of the drive shaft 38) is transmitted to the movable blade 48 of the shaving unit 6. In this case, the switch knob 4 corresponds to the operation knob (unit operation body) 83 described in the above embodiment. In the case of an electric razor having a swing mechanism that tilts only to the left or right, or an electric razor that has a swing mechanism that can be tilted to the left and right and that can move up and down, the connecting piece 39 of the third drive shaft 38 and the passive arm The back and forth rattling with 49 is small. However, by pulling the razor head 2 with a regulating structure, slight backlash in the front-rear direction can be eliminated, and transmission of reciprocating power from the connecting piece 39 to the passive arm 49 can be performed efficiently. The present invention can also be applied to a type in which cutting is performed only with an inner blade, that is, an electric shaver not provided with an outer blade. In addition, all the electric razor regulating structures according to the above-described Examples 1, 2, 3, and 4 regulate the left-right tilt and the front-back tilt while allowing the vertical movement, but the regulating structure is a left-right tilt, It may be a lock-type regulating structure that regulates all displacements of forward and backward tilting and vertical movement and seals the movement of the razor head 2 with respect to the main body 1. Specifically, when the regulation structure is configured by a rod-shaped regulation body 84 and a hole-shaped regulation guide 86 with which the regulation body 84 is engaged, a dead-end wall is provided at the back of the hole. When the rod-shaped restricting body 84 is inserted into the hole-shaped restricting guide 86, the protruding end of the rod-shaped restricting body 84 is abutted against the dead end wall.

DESCRIPTION OF SYMBOLS 1 Main-body part 2 Razor head 6 Shaving unit 11 Cutting blade part 38 3rd drive shaft (drive shaft for a shaving unit)
39 Connecting piece 47 Fixed blade 48 Movable blade 49 Passive arm 51 Mounting part 83 Operation knob 84 Restrictor 86 Restriction guide 87 Engagement guide surface

Claims (3)

An electric razor in which the razor head (2) is supported so as to be at least horizontally tiltable and vertically movable with respect to the main body (1), and a shaving unit (6) is disposed around the main body (1). Because
In the state in which the shaving unit (6) is switched from the standby position to the use position, the left and right reciprocating power on the razor head (2) side moves to the movable blade (48) that moves to the left and right of the shaving unit (6) via the transmission mechanism. Configured to be transmitted,
In the state where the sharp shaving unit (6) is switched to the use posture by the unit operating body (83), it is provided with a regulating structure for regulating the displacement of the razor head (2) relative to the main body (1),
The restricting structure is composed of a rod-shaped restricting body (84) and a hole-shaped restricting guide (86) with which the rod-shaped restricting body (84) engages , one of which is on the unit operating body (83) side. The other is provided on the side of the razor head (2),
The unit operation body (83) is composed of an operation knob (83) supported so as to be slidable up and down by the main body (1).
The vertical movement stroke (H1) relative to the main body (1) of the razor head (2) is set to be smaller than the vertical sliding stroke (H2) of the operation knob (83),
In a state where the shaving unit (6) is switched to the use posture with the operation knob (83), the regulating body (84) and the regulating guide (86) are engaged to regulate the tilting of the razor head (2). An electric razor characterized by that.
  The electric shaver according to claim 1, wherein an engagement guide surface (87) is formed at an engagement start end of at least one of the restriction body (84) and the restriction guide (86).   In a state where the shaving unit (6) is switched to the use posture with the operation knob (83), the razor head (2) is pulled toward the shaving unit (6) by the regulating body (84) or the regulating guide (86). The electric shaver according to claim 1 or 2, wherein the electric shaver is operated.

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