JP2001212382A - Electric razor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adjust an electric razor to optimum outer blade floating force and inner blade pushing-up force. SOLUTION: This electric razor comprises a blade unit 23 having an outer blade, a blade frame 38 sinkably float-supporting the blade unit 23 against spring excitation, an inner blade kept in slide contact with an outer blade, a pushing-up spring 18 exciting the inner blade toward the outer blade, and a main body 1 storing the drive source of the inner blade. The position of the blade frame 38 in the floating direction of the blade unit 23 against the main body 1 can be changed. When the position of the blade frame 38 floatably supporting the blade unit 23 is changed, the force applied to the outer blade by the pushing-up spring 18 via the inner blade is changed, and the outer blade floating force and the inner blade pushing-up force can be adjusted according to an individual user and the used state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric razor in which a blade unit having an outer blade is floatable with respect to a main body.

[0002]

2. Description of the Related Art Many electric razors in which an outer blade is supported in a floatable manner have been put to practical use. These aims are to give the outer blade elasticity to softly hit the unevenness of the skin and improve the skin contact, and to increase the adhesion between the skin and the outer blade to reduce shaving residue It is to be.

However, in the prior art, since the force of the spring for pushing up the inner blade to contact the inner surface of the outer blade is fixed in one product, the depth of the beard, shaving method, In many cases, it is not the optimal value for the method of pressing to the surface. For this reason, for people with weak pressing force, the inner blade is used without floating at all, and for people with particularly thick beards and extremely strong pressing force, the inner blade pushing up force is weak, so the inner blade is lower. In some cases, they have run away and are becoming less sharp.

As a technique for adjusting the position of the blade in accordance with the characteristics of each person, Japanese Patent No. 272 is disclosed.
No. 6476 has an example. This is because the outer shaving member is detachably connected to the mounting plate, and the outer shaving member is integrally attached to the mounting plate with respect to the holder while maintaining a constant distance between the outer shaving member and the mounting plate. By adjusting the positional relationship between the upper surface of the holder and the upper surface of the outer shaving member (x1 → x2), the skin is received on the upper surface of the holder when the skin is pressed, It can reduce the contact pressure between the outer shaving member and the skin, and can prevent irritation from occurring when the skin enters through the blade hole of the outer shaving member and is rubbed by the inner shaving member. It has become.

However, in this example, the upper surface of the holder around the outer shaving member is substantially the same as the outer shaving member so that the skin can be received not only by the outer shaving member but also by the upper surface of the holder. It has to be a face, and it will not be possible to shave under the nose or at the side of the sideburn. Also, because the area of the entire holder is large,
In a recess such as under the chin, only the outside of the holder hits the skin, and the outer shaving member, which should originally hit the skin firmly, does not adhere to the skin, and there is a disadvantage that the unshaved part increases. I have.

[0006] In order to solve the above-mentioned problem, Japanese Patent No. 2726 discloses a structure in which only the spring force can be adjusted without changing the positional relationship between the outer blade and the holder surrounding the outer blade.
No. 477 and JP-A-60-176679.

In the former, the rigidity of the elastic element for generating the float spring force of the outer shaving member can be adjusted, but the adjustable range is limited due to the limited size of the elastic element. I ca n’t take that much,
Very small adjustments will be made for variations in user usage.

In the latter case, the lower point of the inner blade push-up spring is movable so that the pushing force of the inner blade against the outer blade can be adjusted. However, in order to move the lower point of the push-up spring upward or downward. Structure always slides. For this reason, there is a problem that a useless load is generated, a battery as a power source is consumed, and unpleasant noise is generated.

An example in which only the amount of float of the outer cutter can be adjusted by changing the position of the bottom dead center of the float of the outer cutter is disclosed in Japanese Patent Application Laid-Open No. Sho 61-213085. In this example, the bottom dead center of the float of the outer cutter can be changed by changing the orientation when the holder and the housing are connected. However, in this case, the ability to cut the beard does not change because the float force and the inner blade pushing-up force cannot be changed, and the variation in the thickness, length, and shaving method of a certain user's beard. It is impossible to respond.

[0010]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object the following:
The thickness of the user's beard, the length of the beard, the degree of delicate skin,
The user intentionally adjusts the height of the blade unit against variations in the pressing force against the skin, and adjusts the outer blade float force and the inner blade lifting force to the optimum for the individual user and operating conditions. Is to be able to set an optimal shaving tool. In addition, even when the outer blade is lowered by moving the blade unit and blade frame together, the relative position of the outer blade and the surrounding area does not change, providing an electric razor that does not deteriorate the introduction of whiskers under the nose and under the chin. Is to do.

[0011]

According to the present invention, there is provided a blade unit having an outer blade, a blade frame which floats and supports the blade unit so as to be able to sink freely against spring bias.
An inner blade that is in sliding contact with the outer blade, a push-up spring that urges the inner blade toward the outer blade, and a main body that incorporates a drive source for the inner blade; The feature is that the position in the direction is variable. The height of the blade unit can be intentionally adjusted by the user by changing the position of the blade frame that supports the blade unit in a freely floatable manner. Since the force applied by the push-up spring to the outer blade via the inner blade changes depending on the position change of the blade frame, the outer blade float force and the inner blade push-up force can be adjusted according to individual users and use conditions. In addition, even when the outer blade is lowered by moving the blade unit and blade frame up and down together, the vertical relative position between the outer blade and the surrounding area does not change, and the introduction of whiskers under the nose and under the chin is prevented. You can keep it from getting worse.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. FIGS. 1 to 10 show an example.
In the figure, reference numeral 1 denotes a cylindrical main body housing, and a chassis 6 in which a motor 2, a storage battery 3, and a driver 5 for receiving rotation of the motor 2 via an eccentric shaft 4 and converting the rotation into reciprocating motion are mounted.
Is stored. The upper opening of the main body housing 1 is closed by a blade mount 7, and the lower opening of the main body housing 1 is closed by a lower cover 8. A switch 9 is provided on the front of the main body housing 1.
And a switch base 10 for slidably locking the switch 9 to the main body housing 1, and a trimmer unit 11 is slidably disposed on the rear surface of the main body housing 1.

A rubber holding plate 12 is fixed to the upper part of the blade mounting base 7 with screws 13. The blade mount 7 and the rubber pressing plate 12 each have an opening, the driving part of the driver 5 penetrates the opening, and the inner O-ring part of the driver waterproof rubber 14 is formed on the waterproof seal part of the driver 5. The outer periphery of the driver waterproof rubber 14 is sandwiched between the blade mount 7 and the rubber pressing plate 12. Further, the blade mount 7 and the lower cover 8 are assembled by integrally molding rubber on an outer peripheral portion and a screw hole portion to be a mating surface with the main body housing 1 or by interposing an O-ring. Has a waterproof structure.

A frame attaching / detaching button 16 and a coil spring 17 are provided on both sides of the blade mounting base 7 as attaching / detaching mechanism portions 15 of a head portion, respectively. An inner blade push-up spring 18 is provided in the drive portion of the driver 5 at the back of the inner blade mounting portion so that the inner blade 20 can be constantly pressed against the outer blade 19 by its elasticity. A trimmer drive rod 21 is attached to the side surface of the drive portion 5 so that the drive can be transmitted to the trimmer unit 11.

The head portion is composed of a blade unit 23 and a blade frame 38 as movable parts, and a fixed part mainly composed of the connection frame 26. The outer blade 19 is stretched over the frame-shaped inner cassette 22. An outer cassette 24, which constitutes a blade unit 23 and floatably supports the blade unit 23 with elastic legs, and a mounting frame 25 provided with an engaging portion on an inner surface so that the outer cassette 24 can be attached and detached, form a blade frame 38. It is composed. The fixed portion includes a ring-shaped connecting frame 26 for variably attaching the blade frame 38 to the main body in the up and down float directions, and a switching lever 27 for adjusting the height of the blade frame 38.

The connecting frame 26 has a ring-like shape that covers the entire periphery of the outer blade frame 25 within the range of changing the vertical position of the blade frame 38. And a detachable portion with respect to the main body.

The switching lever 27 for switching the height of the outer blade frame 25 has a boss 30 on its inner surface slidably fitted in a guide groove 29 provided on the outer blade frame 25 with a gradient. The outer blade frame 25 is fixed so as to slide in a direction orthogonal to the movable direction. If the switching lever 27 is slid left and right, as shown in FIG. 10, the outer blade frame 25 moves up and down in order for the boss 30 to move in the inclined guide groove 29, and as a result, The mounting height of the blade frame 38 including the outer cassette 24 and the outer blade frame 25 that floats and supports the blade unit 23 is variable.
Since the driver 5 having the inner cutter 20 has a constant vertical position and only urges the inner cutter 20 upward by the push-up spring 18, the above adjustment of the range H in FIG.
The float force of the outer cutter 19 and the push-up force of the inner cutter 20 can be adjusted to be optimum values.

Here, since the switching lever 27 is provided on the connection frame 26 on the side to be detached and attached and is disposed at a position close to the movable outer blade frame 25, a height adjusting mechanism of the outer blade frame 25 is provided. It can be easily configured.

Further, since the connecting frame 26 is provided outside the outer cutter frame 25 and the connecting frame 26 covers the entire periphery of the outer cutter frame 25 within the range of changing the vertical position of the outer cutter frame 25, The shavings cut during shaving are less likely to spill, and the connecting frame 26 is detachable from the main body, so that cleaning can be performed easily.

Furthermore, since the height of the outer cutter frame 25 can be switched, play may occur between the outer cutter frame 25 and the connecting frame 26, which may adversely affect sharpness and noise. However, in this case, the lower body and the outer connection frame 26 are fixed to the outer blade frame 25 that moves up and down, and when the outer blade frame 25 is in the lowered position, the blade mounting of the main body is performed. When the outer surface of the fixing portion of the base 7 contacts the inner surface of the outer cutter frame 25 to prevent backlash, and when the outer cutter frame 25 is at the raised position, the inner surface of the fixing portion of the connecting frame 26 is The play is stopped by touching the outer surface. Up and down 2 with one part
Difficulty arises in preventing rattling at several places due to problems of draft angle and dimensional accuracy, but it is possible to easily perform vertical rattling by using separate parts.

Since the load of the inner cutter push-up spring 18 is always received, the operating force of the switching lever 27 in the direction in which the outer cutter frame 25 is pulled down is reduced by the outer cutter frame 2.
5 becomes heavier than the operating force in the direction of pushing up.
On the other hand, as the gradient of the guide groove 29 provided in the outer cutter frame 25 is smaller, the force for pulling down the outer cutter frame 25 can be set smaller. In general, the operation force of the switch is better if the operation force is not different between the on / off operation, so that the operation feeling is better.
The sliding operation amount of the slide switch is set to be larger than the vertical movement amount of the outer cutter frame 25 so that the gradient of the outer blade 25 can be reduced.

Further, a click portion 31 using an elastic piece is provided between the switching lever 27 and the connection frame 26, and the outer blade frame 25 is moved so that the operation force for raising and lowering the outer blade frame 25 can be made substantially uniform. The click load when pulling down is set smaller than the click load when pushing up the outer cutter frame 25.

The height of the outer cutter frame 25 is adjusted by the boss 30 of the switching lever 27.
The force to push up and down the outer blade frame 2
When only a part (front surface) of the outer blade 5 is applied, the outer blade frame 25 may be displaced due to an upward load by the inner blade push-up spring 18 and a sliding resistance between the outer blade frame 25 and the blade mount 7 or the connection frame 26. The camera may tilt or the height adjustment operation may be awkward. For this purpose, as shown in FIG. 11, the guide groove 2 which slide-fits with the boss 30 of the switching lever 27 is used.
9 (or a fitting part of a movable part that operates in response to the operation of the switching lever 27) is provided not only on the front surface of the outer cutter frame 25 but also on the opposite side to prevent the outer cutter frame 25 from tilting, It is also preferable to make the vertical movement of the outer cutter frame 25 smooth.

As shown in FIG. 6, a rib 32 and a groove 33 which fit and slide with each other are provided on the outer surface of the outer cutter frame 25 which moves up and down and the inner surface of the connection frame 26. The outer blade frame 25 does not tilt during the vertical movement due to the sliding of the rib 32 and the groove 33. In the illustrated example, an inverted U-shaped groove 33 is provided on both side surfaces of the outer cutter frame 25,
The reason why the groove 33 is closed on one side without penetrating vertically is to also serve as a stopper in the pushing direction of the outer cutter frame 25 with respect to the connection frame 26. A hook 35 is provided on the outer blade frame 25 at the diagonally rear portion, and a locking portion 26a including a groove and a weir is provided on the connecting frame 26 so that the hook 3
The locking portion 26 a that locks the outer blade 5 serves as a stopper for preventing the outer blade frame 25 from coming off. That is, stoppers in both the upper and lower directions are provided.

It is also preferable to provide a click by a convex portion in the groove of the connection frame 26 corresponding to the hook 35 of the outer cutter frame 25 described above. In this case, the outer blade frame 25
The outer blade frame 25 can be locked at an appropriate position when the vertical movement occurs. Slide switch 2 on the front
7 because the boss 30 moves the outer blade frame 25 up and down.
Although the positioning of the rear side of the blade frame 25 is insufficient, the hook 35 at the obliquely rear portion of the outer blade frame 25 is used as the positioning, so that the positioning of the rear side is also achieved.
9 can be prevented.

The grooves 33 of the outer cutter frame 25 do not penetrate vertically and are open at the lower surface.
Can be assembled from above. However, since the hooks 35 serve as stoppers for retaining the hooks, the hooks need to have flexibility during assembly. For this reason, the outer cutter frame 25 is formed of a flexible material, and the connection frame 26, which is frequently gripped when the head portion is attached or detached, is formed of a hard material. Can be.

When the outer cutter frame 25 moves up and down, the trimmer drive rod 21 for transmitting the driving force to the trimmer unit 11 becomes a spatial obstacle, and the blade unit 23
In some cases, the float and the operation of the outer cutter frame 25 may be limited. However, as shown in FIG.
1 is provided with a relief hole in the middle part thereof so that interference with the blade unit 23 and the outer blade frame 25 can be minimized.

Further, a protective cap 37 for protecting the blade is provided.
6 (see FIGS. 6 and 8) can be attached to and detached from a holder provided on the blade frame 38 that moves up and down. When the protective cap 37 is attached to a fixed portion such as a main body case in an electric razor in which the height of the outer cutter frame 25 can be adjusted in the vertical direction, when the outer cutter frame 25 is in the lowered position, the protective cap 37 and the outer cutter 19 Distance is too wide, the protection against impacts such as dropping is insufficient,
There is a problem that shavings are spilled from the gap that opens widely, but the distance between the protective cap 37 and the outer blade can be always kept constant by holding the protective cap 37 with the blade frame 38 that moves up and down.

FIGS. 12 to 19 show other examples. 101 in the figure
Is a cylindrical main body housing in which a storage battery 102 and a linear motor 103, and a base 105 holding the battery 102, the linear motor 103 and the circuit board 126 are stored. The linear motor 103 includes a driver 112 for transmitting a driving force to the inner blade 104 at an upper portion thereof. The upper opening of the main body housing 101 is closed by the blade mount 106, and the lower opening is closed by the lower cover 107. Reference numeral 141 in FIG. 16 denotes a fixing screw for the lower cover 107.

The rubber holding plate 11 is provided above the blade mount 106.
1 is fixed using screws. The blade mounting base 106 and the rubber pressing plate 111 have openings, respectively. The driver 112 of the linear motor 103 penetrates the openings, and the inner O-ring portion 148 of the driver waterproof rubber 113 forms the waterproof seal of the driver 112. The outer peripheral portion 150 of the driver waterproof rubber 113 is sandwiched between the blade mounting base 106 and the rubber pressing plate 111.

The blade mount 106 and the housing 101 are fixed with an O-ring 128 therebetween at an intermediate portion thereof, and are fixed with a front panel 129 and an upper ring 127 therebetween at the upper side.
The lower cover 107 waterproofs the inside of the main body housing 101 by integrally molding rubber on an outer peripheral portion and a screw hole portion to be a mating surface with the main body housing 101 or assembling the O-ring therebetween.

A switch 108 and a switch base 109 for slidably engaging the switch 108 with the main body housing 101 are provided on the front surface of the main body housing 101, and a trimmer unit 1 is provided on the rear surface of the main body housing 101.
10 is slidably disposed.

The driver 112 is provided with an inner blade push-up spring 113 together with a spring stopper 140, and the inner blade 104 is constantly pressed against the outer cutter 114 by the elastic force of the inner blade push-up spring 113. A trimmer driving rod 115 and a slit blade driving rod 151 are attached to the side surface of the driving portion of the driver 112 so that the drive can be transmitted to the trimmer unit 110 and a slit blade described later.

As shown in FIG.
The blade frame 118 includes one net blade unit 117, a central slit blade unit, and a blade frame 118 that supports these blade units in a free-floating manner.
Has two engaging hooks 120 at both ends in the longitudinal direction for detachable engagement with the main body. In the figure, reference numeral 118 denotes a detachable button.

The net blade unit 117 is formed by attaching a net cover 142 to an inner cassette 116 in which the outer blade 114 is heat-sealed and fixed. By the engagement of the rib 166, it is held so as to float freely.

The slit blade unit includes a slit outer blade 14.
4. Consists of a slit inner blade 152, a slit joint 143, a slit push-up spring 145, and a slit holding member 146.
The hook 168 provided on the slit holding member 146 and the protrusion 167 provided on the inner surface of the blade frame 118 are engaged with each other, and the blade frame 168 is biased upward by the slit push-up spring 145 via the slit float spring 147. 118
Float freely.

The switching plate 1 is located at a position surrounded by the outer periphery of the lower part of the blade mount 106 on the main body side and the inner periphery of the main body housing 101.
21 is provided so as to be movable in the vertical direction. The switching plate 121 has a substantially U-shape, and has an end formed with a protrusion 169 projecting upward.
The upper end of the protrusion 169 that protrudes from the upper surface through the hole 170 provided in the blade mount 106 has an engagement hole 122 for engaging with the engagement hook 120 of the blade frame 118. ing. A ring 133 made of an elastic material such as rubber for preventing intrusion of shavings is attached to the hole 170.

An engagement hole 171 is formed near the center of the front surface of the switching plate 121 so as to be coupled to the engagement protrusion 172 of the rack member 136. The fixed rack member 136 is
Rack grooves are provided on both left and right sides, and a reduction gear 135 is engaged with the left rack groove, and a cam lever 138 is engaged with the right rack groove.

The reduction gear 135 is a partial gear in which the small-diameter portion 173 and the large-diameter portion 174 each having gear teeth are formed with the same thickness, and is provided on a shaft 176 protruding from the blade mount 106. The reduction gear 135 in which the engagement hole 175 at the center of the small diameter portion 173 rotatably engages the gear of the small diameter portion 173 with the rack member 136 and the gear of the large diameter portion 174 with the operation gear 131.

The operation gear 131 is attached to the operation button 130 so that the front face of the housing 101 and the recess 17 of the upper panel are provided.
7 and 178, while being rotatably held with respect to the housing 101 while being positioned in the circular hole constituted by
The operation button 130 rotates integrally with the operation button 130.
Is rotated, the switching plate 121 to which the rack member 136 is fixed moves up and down via the operation gear 131 and the reduction gear 135, and the blade frame 118 is attached to the switching plate 121. Therefore, at this time, the blade frame 118 also moves up and down within the range of H in the figure as shown in FIG. 19 together with the blade unit.

In this case, the blade mounting base 106 is provided with protrusions 123 having a shape along the outer peripheral surface of the blade frame 118 at both left and right ends on the upper side, and is provided with a vertical notch 179 between the protrusions 123. The protrusion 118 b of the blade frame 118 is sandwiched between the notch 179 and the four protrusions 123 in total in the left, right, front and rear, within the range of changing the vertical position. The play in the front-back direction is suppressed.

The blade frame 118 moves up and down with respect to the main body, and the outer peripheral wall of the blade frame 118 and the outer peripheral wall of the upper surface of the blade mount 106 are in contact with each other regardless of the height of the blade frame 118. It overlaps all around. The shavings cut by the outer blade and the inner blade accumulate on the upper surface of the blade mount 106, and the outer peripheral wall of the blade frame 118
When the blade frame 118 does not overlap with the upper surface of the blade 6, a gap is formed between the blade frame 118 and the upper surface of the blade mounting base 106 when the mounting position of the blade frame 118 is at the upper position, and whiskers may fall off. However, this can be prevented.

However, in the case of an electric shaver provided with the trimmer unit 110, the outer peripheral wall provided on the blade frame 118 may interfere with the trimmer driving rod 115 and cause an obstacle. For this reason, here, a notch 124 is provided in a part of the outer peripheral wall of the blade frame 118 to avoid interference, and the trimmer drive rod 115 overlaps the outer peripheral wall of the blade frame 118 with the full width even during the driving operation, Further, even when the blade frame 118 is operated in the vertical direction, a thin vertical wall 125 is provided which overlaps the outer peripheral wall of the blade frame 118 in the height direction to prevent spillage of shavings from the notch 124.

Parts such as the switching plate 121 are arranged outside the outer peripheral wall of the blade mounting base 106, and the main body housing 101 has a double structure on the upper side, and is provided on the inner wall below the outer peripheral wall of the blade mounting base 106 for waterproofing. The components such as the switch mechanism are disposed between the inner wall and the outer wall in combination with the seal portion in order to maintain the waterproof structure inside the main body housing 101.

Further, the switching plate 121 has a hole 170 formed on the upper surface of the blade mount 106 only in a locking portion with the blade frame 118.
The other portion is formed in a semi-ring-shaped substantially U-shape sandwiched between the inner peripheral wall of the main body housing 101 and the outer peripheral wall of the blade mount 106. The parts can be integrated into one part from the front to the side part with the locking part without interfering with the linear motor 103 and the driving part housed in the inside, and can be integrated into the inner peripheral wall of the main body housing 101 and the outer peripheral wall of the blade mounting base 106. By being sandwiched, the switching plate 121 can slide along the wall of one of the components without rattling when the switching plate 121 moves up and down.

Further, the hole 170 of the blade mounting base 106 is provided between the inner sides of the front and rear protrusions 123 of the four protrusions 123 described above, so that the protrusions 169 of the switching plate 121 are passed therethrough. Is plugged with a rubber-like elastic body 133. In addition to preventing the shavings from entering the periphery of the switching plate 121 and hindering the sliding operation, the position of the hole 170 of the blade mount 106 is provided in the vicinity of the protrusion 123 of the blade frame 118 for rattling. Thus, the effect of preventing the protrusion 169 of the switching plate 121 from rattling is obtained.

Similarly, on the front surface of the switching plate 121 sandwiched between the inner wall of the main body housing 101 and the outer wall of the blade mount 106, there is provided a drive coupling portion for sliding the switching plate 121 up and down. This is also to make the switching plate 121 perform the sliding operation smoothly without tilting.

As a mechanism for sliding the switching plate 121 in the vertical direction, the rotary operation button 130 having the gear 131 on the inner surface is rotatably disposed outside the main body housing 101 as described above. A rack member 136 is formed on the front surface of 121, or the rack member 136 is connected,
Further, by using a gear having a reduction gear 135 interposed between the rack member 136 and the operation gear 131 on the inner side of the operation button 130, the switching plate 121 is slid up and down by turning the operation button 130. But reduction gear 1
The reason for interposing 35 is to reduce the operation force of the operation unit, and also because the rotary operation button 130 having a larger diameter than the operation gear 131 is used, the blade can be operated with less operation force. The frame 118 can be moved up and down.
Further, as the reduction gear 135, the large diameter portion 174 and the small diameter portion 1
The reason that 73 uses partial gears in the same thickness is that
This is to reduce the thickness.

A click spring 132 is disposed in a recess 180 provided on the front surface of the main body housing 101, and a projection 181 of the click spring 132 is connected to the recess 18 on the back side of the operation button 130.
By engaging with the second button 2, the click operation is given to the rotation operation of the operation button 130, and the positioning of the operation button 130 and the positioning of the outer blade mounting height are performed. In addition, as shown in FIG. 20, the same effect can be obtained by engaging the click spring 153 with the operation gear 131.

The cam lever 138 provided on the right side of the rack member 136 is connected to the blade mount 10 via an O-ring 134.
6, which is rotatably engaged with the hole 183 on the front surface.
An engagement rib 184 is provided at the tip of the shaft portion, and the engagement rib 184 is engaged with the groove 185 of the switch cam 137 arranged in the main body housing 101.

The switch cam 137 has a shaft portion 186 provided on the back side of the groove 185 rotatably engaged with a hole 187 on the front surface of the linear motor 103, and switches the long groove hole 188 provided on the right side thereof. The bar 139 is rotatably connected to the projection 189.

The upper end of the switching bar 139 is engaged with the engaging groove 190 at the upper part of the linear motor 103.
The rear projection 191 is engaged with the engagement hole 192 on the front surface of the linear motor 103 so as to be vertically movable with respect to the linear motor 103. For this purpose, the rack member 1
36, the cam lever 138 and the switch cam 1
The switching bar 139 also moves up and down via 37. Since the lower end of the switching bar 139 turns on and off the switch provided on the circuit board 126 by the up and down movement, the drive control is performed in conjunction with the up and down movement of the outer blade, and the switching position is changed. It can be displayed on a lamp or liquid crystal.

As shown in FIGS. 21 and 22, a lock button 1 slidable on the outer peripheral portion of the surface of the rotary operation button 130 is provided.
52 and the housing 101 or the front panel 1
The 29 side may be provided with a concave portion 194 for engaging the lock button 152 in accordance with the position of the outer blade 114 so that the outer blade 114 can be locked. The positioning of the outer blade 114 can be reliably performed, and the outer blade 11
Fig. 2 that can prevent the height of the fourth from changing
3 is such that a rotary operation button 154 for sliding the switching plate 121 in the up-down direction is disposed inside the main body housing 101, and a part of the outer peripheral portion of the operation button 154 is formed through a hole 195 provided on a side surface of the housing. The one exposed to the outside is shown. By turning the outer peripheral side of the rotary operation button 154, the operability can be improved as compared to turning the operation button 130 on the front, and the operation can be performed carelessly while shaving. Touching the button 154 with a finger can be prevented.

FIG. 24 shows that the switching plate 121 has projections 196 protruding from the front surface in addition to the locking projections 169 on both sides.
The upper end of the blade frame is projected from an opening 197 provided on the upper surface of the blade mount 106 to always support the lower surface of the blade frame 118. In this case, it is possible to prevent the blade frame 118 from rattling in the front-rear rotation direction with respect to the main body.

FIG. 25 shows another mechanism for moving the switching plate 121 up and down. Here, the switching plate 121 is rotatably supported by the blade mount 106 and engages with a rack member 136 provided on the front surface of the switching plate 121. A projection 198 is provided outside the gear 158 to be shifted from the center axis. In addition, the outer blade 11
Front panel 12 provided with a slide button 155 in a direction orthogonal to the vertical movement direction of
9 is provided slidably, and a connecting plate 157 having a concave portion 199 that is slidable in the up-down direction and engages in the left-right direction with the projection 198 of the gear 158 is attached to the back surface of the slide button 155. The gear 158 is rotated by the sliding operation of the slide button 155 and the connecting plate 157, and the switching plate 121 moves up and down via the rack member 136 to change the position of the outer blade 114.

FIG. 26 shows still another example, in which the outer cutter 1 is used.
Slide button 155 in the direction orthogonal to the up and down movement direction of 14
Hook portion 20 on the front portion 200 of the main body housing 101.
3 is slidably provided by coupling the housing 3 with the groove 204 of the housing, and the boss 2 protrudes from the back surface of the slide button 155.
02 is slidably fitted in a guide groove 201 provided with a gradient at the front of the switching plate 121. Slide button 15
The switching plate 121 moves up and down by the sliding operation of No. 5, and the outer blade 10
Change the position of 4. In this case, the number of parts for moving the switching plate 121 up and down can be reduced.

As shown in FIG. 27, a link 161 rotatable by a boss 176 protruding from the blade mount 106 being engaged with the central hole 205 is connected to the switching plate 121 and provided on the link 161. When the protrusion 206 is connected to the connection plate 157 of the slide button 155 similar to that shown in FIG. 25 and the slide button 155 is moved right and left, the link 1
61 may move the switching plate 121 up and down.
Also in this case, the number of parts can be reduced.

It should be noted that the outer blade 1 is opposed to the pushing force of the inner blade 104.
Manually lowering the blade 04 (the blade frame 118) requires a considerably large force, and it is not preferable that the operating force be changed between when the position of the outer blade 104 is raised and when it is lowered. For this purpose, as shown in FIG. 28, a motor different from that for driving the inner blade 104 may be provided so that the outer blade 104 can be raised and lowered only by turning on and off the energizing switch.

FIG. 28 shows an example of the case where the outer blade 104 is moved up and down by electric power. A gear 131 is connected to a shaft of a motor 162 fixed to a hole 208 of the base 105 via a speed reducer 163. The gear 131 is engaged with a rack member 136 provided on the switching plate 121 via a reduction gear 135. The main body is provided with a switch 207 capable of operating the rotation direction of the motor 162 in both forward and reverse directions.
The vertical position can be adjusted.

As shown in FIG. 29, an eccentric cam 164 having a cylindrical fitting portion 209 eccentric from the center axis is connected to the motor 1.
The eccentric cam 164 may be engaged with the hole 210 provided on the front surface of the switching plate 121 by being coupled to the speed reducer 163 of FIG. In this case, a switch 211 that can operate the rotation direction of the motor 162 only in the forward direction is provided. If the eccentric cam 164 is rotated by the rotation of the motor 162, the switching plate 121 can be moved up and down by the eccentricity. Eccentric cam 1
Since the motor 64 is used, only one direction of rotation of the motor 162 is required, and there is no need to use a motor capable of rotating forward and backward, and the switch 211 can be simply turned on and off.

FIGS. 30 to 36 show other examples. A push-type switch 208 and a dial-type operation button 130 penetrating the opening of the front panel 129 are disposed on the front surface of the main body housing 101, and a trimmer unit 110 is slidably disposed on the rear surface of the main body housing 101. are doing.

The head portion is the same as that described above, and has two front and rear net blade units 117 and a central slit blade 144.
And a blade frame 118 that supports these blade units in a free-floating manner. The blade frame 118 has two engaging portions 120 at both ends in the longitudinal direction for detachable engagement with the main body.

Here, the blade mounting base 106 is composed of two upper and lower members 1
06a, 106b, and the driver waterproof rubber 11
3 is sandwiched between a blade mount 106a and a blade mount 106b fixed to the upper end of the blade mount 106a with screws.
The blade frames 11 are provided on both left and right ends on the upper side of the blade mount 106b.
8 is provided with a projection 223 having a shape along the outer peripheral surface. A vertical notch 279 is provided between the protrusions 223, and an opening hole 270 is provided between the front and rear protrusions of a total of four protrusions 223 in the left, right, front and rear directions.

On the other hand, on the front and rear surfaces of the frame-shaped blade frame 118, walls 219 each having a shape covering the outer side of the upper end of the blade mounting base 106b are provided.
Is provided. The size of the wall 219 is set to a size that overlaps the outer side of the upper end of the blade mount 106b in the height direction even when the blade unit is operated in the vertical direction when adjusting the height of the blade unit.
Prevents spillage of whiskers during use. Further, when cleaning whiskers, the blade unit is removed and cleaning is performed. However, since there are no walls or steps on the front and rear upper end surfaces of the blade mount 106b, whiskers can be easily swept out.

A substantially U-shaped switching plate 121 is disposed at a position surrounded by the lower outer periphery of the blade mounting base 106a on the main body side and the inner periphery of the front panel 129 so as to be vertically movable. The switching plate 121 has a hole 232 provided at the center thereof.
The round boss 233 is engaged with the slide hook 225 in which the float round boss 230 is slidably engaged with a vertically long track-shaped elongated hole 224 provided at both ends thereof. , And blade mounting base 1
The slide hook 225 having the locking hooks 231 projecting from the upper surface of the blade mounting base 106b through the opening holes 270 of the blade frame 106b engages the locking hooks 231 at both ends thereof with the engaging portions 220 of the blade frame 118. Therefore, when the switching plate 121 is moved up and down, the blade frame 118 is moved up and down via the slide hook 231.

However, the slide hook 225 is the round boss 2
The elastic legs 234 and 234 are provided between the central portion provided with the hook 33 and the both ends provided with the locking hooks 231 and 231, and the engaging portions at both ends of the switching plate 121 and the slide hook 225 are elongated holes 224. And the round boss 230 are slidable up and down.
The blade frame 118 is attached to the elastic leg 2
34 will follow through the elasticity.

Therefore, when the main body is dropped, the locking hook 23
No impact is directly applied to 1 itself or a height switching mechanism described later. Also, in the hook structure of the locking hook 231, the hook shape on the locking hook 231 side is slightly inclined so that the hook is disengaged from the main body when an excessive load is applied to the blade unit. It is assumed to have. Since the slide engagement portion between the elongated hole 224 and the round boss 230 is provided, the vertical float movement of the slide hook 225 with respect to the switching plate 121 is limited to the range of the elongated hole 224, and the float amount is regulated. At the same time, the locking hook 231 is prevented from falling out and falling.

Here, the slide hook 225 is connected to the locking hook 231, the round boss 233 for connecting and fixing, and the elastic leg 234.
By using a single component having the above configuration, it is possible to perform a connection having a float property between the switching plate 121 and the blade frame 118 with a small number of components, and has a good assembling property. It has become something.

Next, an operating mechanism for moving the switching plate 121 up and down, here, a round boss 233 for making a fixed connection between the switching plate 121 and the slide hook 225.
Is a cam follower, and the cam follower is driven by an eccentric cam groove 254 provided in the dial-type operation button 130, so that the round boss 233 has the switching plate 121
In addition to the connection and fixation of the blade unit and the slide hook 225, the blade unit 225 also functions as a vertical movement mechanism of the blade unit.

That is, here, the cam groove 254 is formed on the inner surface side.
The dial-type operation button 130 provided with
It is rotatably mounted on the shaft 160 of the blade mounting base 106a through the opening hole. As shown in FIG. 35, the cam groove 254 has an endless circular shape eccentric with respect to the rotation center of the operation button 130, and a round boss 233 serving as a cam follower is slidably engaged with the cam groove 254. As shown in FIG. 36, the switching plate 121 and the slide hook 225 are moved up and down by a stroke corresponding to the amount of eccentricity of the cam groove 254 as the operation button 130 is rotated.
8 to change the height position of the blade unit. At this time, since the switching plate 121 has a U-shape and sandwiches the blade mount 106a from the front and both sides, the operation in the left-right direction is restricted, and only the up-down movement is possible. .

The cam groove 254 may have an arc shape as shown in FIG. 37. However, if the cam groove 254 is formed in an endless ring surrounding the center of rotation, the rotation operation range of the operation button 130 is unlimited, and By rotating the button 130 in one direction, the mounting height of the blade unit can be raised or lowered, and the operability is improved.

The round boss 233 engages with the cam groove 254 at a position where the distance from the rotation center in the cam groove 254 becomes minimum when the mounting height of the blade unit is the lowest. Preferably, they are engaged. Since the operation button 130 performs an operation on the outer peripheral portion, the round boss 233 serving as a cam follower can reduce the operation force as it is located closer to the rotation center of the operation button 130. , Outer blade 1
This is because the lower the height of the blade unit, the greater the operating force in the direction of lowering the blade unit due to the reaction force of the spring that pushes up the inner blade 104 against the blade 14, and the above arrangement reduces the height of the blade unit. The operating force can be reduced.

In addition, as shown in FIG.
The eccentric cam groove 254 on the back surface of the blade 30 is formed so that the curvature gradually changes, and the position where the round boss 233 is engaged when the mounting height of the blade unit is minimized is set to the distance from the rotation center in the cam groove 254. Is preferably set to a portion where is the smallest and the curvature is the minimum. If the curvature is small, the amount of change in the distance from the rotation center per unit angle is small, so that the operating force for lowering the blade unit height can be reduced.

The click recess 256 provided on the outer periphery of the dial-type operation button 130 engages with a click spring 255 attached to the front surface of the main body housing 101, so that a click occurs when the blade is set at a predetermined height. That's what we do. In addition, a small click unevenness 260 is provided on the outer peripheral portion of the rear surface of the operation button 130 over almost the entire periphery.
And a pair of small click spring portions 2 of a spring member 258 also attached to the front surface of the main body housing 101.
59 and 259 are click-engaged with the unevenness 260.

When the operation button 130 is rotated, clicks are generated at predetermined intervals by the click spring 255 and the click concave portion 256. In order to improve the operation feeling between clicks at approximately 90 ° intervals. ,
The click unevenness 260 and the small click spring portion 259 are provided so that a small click feeling is continuously generated when the operation button 130 is rotated.

Here, the small click spring portions 259, 259
The reason why 2 is formed in a symmetrical shape and arranged symmetrically with respect to the operation button 130 is that an equivalent operation feeling can be obtained for rotation of the operation button 130 in any direction.

The click spring 255 applies the spring force from the outer peripheral side to the inner peripheral side of the operation button 130, and the small click spring portion 259 applies the spring force from the back side to the front side of the operation button 130. . Since the operation button 130 is a rotating component, when the operation button 130 is mounted on the blade mount 106a,
A clearance must be provided between the blade mount 106a and the blade mounting base 106a, but the biasing directions of the two types of springs 255 and 259 for applying two types of clicks are made different from each other so that the clearance is axially perpendicular to the axis. Since the operation button 130 is pressed to one side in both directions of shaking, it is possible to prevent the operation button 130 from rattling, especially when shaving with vibration.

[0078]

As described above, in the present invention, the position of the blade frame supporting the blade unit in a floatable manner with respect to the main body in the float direction of the blade unit can be changed by the user. Because the height can be adjusted intentionally, the outer blade float force and inner blade are optimal for the user's darkness and length of the beard, the degree of delicate skin, and the unevenness of the pressing force on the skin. By adjusting to the lifting force, it can be set to the optimum shaving tool for each user, use condition, and also by the blade unit and the blade frame moving up and down together, at the position where the outer blade is lowered Also, the vertical relative position between the outer blade and the surrounding portion does not change, and it is possible to prevent the introduction of the beard under the nose and the chin from becoming worse.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an operation according to an example of an embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is an exploded perspective view of the main body of the above.

FIG. 5 is an exploded perspective view of the main body of the above.

FIG. 6 is an exploded perspective view of the same head side.

FIG. 7 is a perspective view of the same switching lever.

FIG. 8 is a longitudinal sectional view of the same.

FIG. 9 is a cross-sectional view of the same.

10 (a) and 10 (b) are explanatory diagrams showing operations associated with the operation of the switching lever of the above.

FIG. 11 is a partial vertical sectional view of another example of the above.

FIG. 12 is a front view of an example of another embodiment.

FIG. 13 is a partial cross-sectional view of the same.

FIG. 14 is a partial longitudinal sectional view of the same.

FIG. 15 is an exploded perspective view of the same head unit.

FIG. 16 is an exploded perspective view of the main body of the above.

FIG. 17 is an exploded perspective view of the main body of the above.

FIG. 18 is an exploded perspective view of the same.

FIG. 19 is a diagram illustrating the operation of the above.

FIG. 20 is an exploded perspective view of another example of the above.

FIG. 21 is a front view of still another example of the above.

FIG. 22 is an exploded perspective view of the same.

FIG. 23 is an exploded perspective view of another example of the above.

FIG. 24 is an exploded perspective view of still another example of the above.

FIG. 25 is an exploded perspective view of another example of the above.

FIG. 26 is an exploded perspective view of still another example of the above.

FIG. 27 is an exploded perspective view of a different example of the above.

FIG. 28 is an exploded perspective view of an example in which the electric motor is used.

FIG. 29 is an exploded perspective view of another example of the above.

FIG. 30 is a front view of another example.

FIG. 31 is a longitudinal sectional view of the same.

FIG. 32 is a cross-sectional view of the same.

FIG. 33 is an exploded perspective view of the same.

FIG. 34 is an exploded perspective view of the same.

FIG. 35 is a rear view showing an example of the cam groove shape of the operation button of the above.

FIG. 36 is an explanatory diagram showing the operation of the above.

FIG. 37 is a rear view showing another example of the cam groove shape of the operation button of the above.

FIG. 38 is a rear view showing still another example of the cam groove shape of the operation button of the above.

[Explanation of symbols]

 1 Body 18 Push-up spring 23 Blade unit 38 Blade frame

Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat II (Reference) B26B 19/38 B26B 19/38 Z (72) Inventor Yasutomo Ueda Yasutoshi Ueda 1048 Odakadoma, Kadoma, Osaka Prefecture Matsushita Electric Works, Ltd. (72) Inventor Masanobu Yamazaki 1048 Kadoma, Kadoma, Osaka Prefecture Inside Matsushita Electric Works Co., Ltd. (72) Inventor Takeshi Shiba 1048 Odaka Kadoma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Works Co., Ltd. Emon 1048 Kadoma, Kazuma, Kazuma, Osaka, Japan (72) Inventor Mitsuhiro Kadowaki Mitsuhiro Kadowaki 1048 Kazuma, Kazuma, Kadoma, Osaka 1048 F-term in Matsushita Electric Works, Ltd. (reference) 3C056 BC01 BC03 BC05 HC09 JA07 JA13 JA18 JC03 JC05 JC12 JE02 JE08

Claims (62)

[Claims] 1. A blade unit having an outer blade, a blade frame that supports the float so that the blade unit can be sunk freely against spring bias, an inner blade that slides on the outer blade, and an inner blade that is an outer blade. And a main body containing a drive source for the inner blade, wherein the position of the blade frame in the float direction of the blade unit is variable with respect to the main body. Electric razor. 2. The electric shaver according to claim 1, wherein the inner blade is attached to a drive rod for reciprocatingly driving the inner blade by being biased by a push-up spring toward the inner surface of the outer blade. 3. A coupling frame having a detachable engagement portion with the main body and being detachable from the main body, wherein the blade frame is held by the coupling frame so as to be vertically movable. The electric razor according to claim 1, wherein: 4. A blade unit is formed by extending a foil-shaped outer blade on a frame-shaped inner cassette, and the blade unit is supported by the frame-shaped blade frame so as to be floatable, and the blade frame is attached to and detached from the main body. The electric shaver according to claim 1, wherein the electric shaver is mounted on a flexible connection frame so as to be vertically movable. 5. The connecting frame has a ring shape that covers the entire circumference of the blade frame within a range in which the vertical position of the blade frame is variable, and the blade frame is mounted on the inner peripheral side of the connecting frame so that the vertical position of the blade frame is variable. The electric shaver according to claim 3 or 4, wherein 6. When the blade frame is located at the lower end of the float range, the inner surface of the blade frame is in contact with the outer surface of the fixing portion provided on the main body, and when located at the upper end of the float range,
The electric shaver according to claim 5, wherein an outer surface of the blade frame is in contact with an inner surface of the connection frame. 7. The connecting frame according to claim 3, wherein an operator for changing the vertical position of the blade frame is provided on the connecting frame.
Electric razor as described. 8. The operation element is provided on the connection frame so as to be slidable in a direction perpendicular to the vertical movement direction of the blade frame, and is slidably engaged with a guide groove formed as having a slope in the blade frame. The electric shaver according to claim 7, further comprising a boss. 9. The electric shaver according to claim 7, wherein the moving amount of the operation element is larger than the vertical moving amount of the blade frame. 10. The operating element has a click portion made of an elastic piece, and the click portion, which generates a click when the operating element moves, makes the click load when lowering the blade frame smaller than the click load when raising the blade frame. The electric shaver according to claim 7, wherein the electric shaver is made small. 11. An engaged portion on the blade frame side, which engages with a boss protruding from an operator provided on one surface of the connection frame and moves the blade frame up and down in response to operation of the operator, comprises a blade frame. 8. The device according to claim 7, wherein the control unit is provided at a portion on the surface side on which the controls of the connection frame are arranged and a portion on the other side.
Electric razor as described. 12. The electric device according to claim 1, further comprising a protection cap for protecting the blade unit, and a holding portion for detachably holding the protection cap is provided on a vertically movable blade frame. Razor. 13. The electric shaver according to claim 5, wherein a float guide is provided on the outer peripheral side surface of the blade frame and the inner peripheral wall of the connection frame so as to be fitted and slid in the float direction of the blade frame. 14. The electric shaver according to claim 3, wherein the blade frame includes a stopper for preventing the blade frame from coming off. 15. The electric shaver according to claim 14, wherein the stopper has a projection and a concave portion for locking the blade frame at an appropriate position. 16. The electric shaver according to claim 3, wherein the blade frame is formed of a material that is more flexible than the connection frame. 17. A device comprising a trimmer unit, wherein a driving rod for transmitting a driving force to the trimmer unit is provided at an intermediate portion between a mounting portion to a driver driven by a driving source in the main body and a connecting portion of the trimmer unit. The electric shaver according to claim 1, further comprising a relief hole for avoiding the blade frame. 18. A blade frame in which a blade unit is incorporated so as to be freely floatable, an engaging portion for attaching and detaching to and from the main body is provided, and a locking portion of the main body for engaging with the engaging portion of the blade frame is provided on an upper portion of the main body. 2. The electric shaver according to claim 1, wherein the electric shaver is provided so as to be vertically movable. 19. The electric shaver according to claim 18, wherein the inner blade is attached to a drive rod for reciprocatingly driving the inner blade by being biased by a push-up spring toward the inner surface of the outer blade. 20. A blade unit is formed by extending a foil-shaped outer blade on a frame-shaped inner cassette, and the blade unit is supported on the frame-shaped blade frame so as to be floatable, and the blade frame is vertically moved on the main body. 19. The electric shaver according to claim 18, wherein the electric shaver is detachably attached to a locking portion that is variable in position. 21. An engaging portion is provided at at least two places on both ends of the blade frame, and a plurality of engaging portions respectively engaging with each of the engaging portions on the main body side can be vertically moved integrally with the main body. 21. The electric shaver according to claim 18 or 20, wherein 22. A blade frame is held by a blade mount provided at an upper end of the main body so as to be movable up and down, and the blade mount has protrusions on both left and right ends and a longitudinal direction near the center of each protrusion in the front-rear direction. 19. The electric shaver according to claim 18, wherein the notch has a notch, and the blade frame has a protrusion fitted into the notch and guided vertically by a protrusion. 23. The electric shaver according to claim 22, wherein the blade frame and the blade mount are overlapped over the entire circumference within a range of changing the vertical position of the blade frame. 24. The electric appliance according to claim 23, wherein the blade mounting base has a substantially frame-shaped wall erected on the upper surface thereof, and the frame-shaped blade frame is located inside the wall. Razor. 25. A trimmer unit, wherein the trimmer drive rod for transmitting a driving force to the trimmer unit has a thin vertical wall, and the vertical wall of the blade frame corresponds to a notch provided in the blade frame. 23. The electric shaver according to claim 22, wherein a vertical movement range and a left and right movement range of the trimmer drive rod overlap. 26. A switching device in which the upper end of the main body is closed by a blade mount for holding the blade frame, and a driving element for driving the blade is projected upward through the blade mount, and is provided to be vertically movable within the main body. 19. The electric shaver according to claim 18, wherein the locking portions protruding from both ends of the plate project outward from the blade mounting base to attach the blade frame to the locking portions. 27. The electric shaver according to claim 26, wherein the switching plate is connected to an operation button provided on an outer surface of the main body and moves up and down by operating the operation button. 28. The electric shaver according to claim 26, wherein the main body has a waterproof structure, and the locking portion is provided outside the waterproof structure portion. 29. The switching plate according to claim 29, wherein the locking portion of the switching plate is projected upward through holes provided at both ends of the blade mounting base, and a waterproof seal is provided between the hole and the locking portion. Item 30. An electric razor according to Item 28. 30. The main body is provided with a switching plate having a substantially U-shaped horizontal cross section so as to be movable up and down, and left and right locking portions that move up and down are formed integrally with the switching plate. Item 21. An electric razor according to Item 21. 31. The switching plate is provided between the outer peripheral surface of the blade mount and the inner surface of the outer peripheral wall of the upper end of the main body, and only the locking portion projects from the upper surface of the blade mount. The electric shaver according to claim 26, wherein 32. The blade mounting base is a tubular body, and a switching plate is provided in a gap between a lower outer peripheral surface of the blade mounting base inserted into an upper end of the cylindrical main body and an inner surface of an upper end outer peripheral wall of the main body housing. 27 is disposed so as to be vertically movable.
Electric razor as described. 33. The electric shaver according to claim 31, further comprising a rubber-like elastic body that covers the periphery of the locking portion of the switching plate. 34. The switching plate according to claim 2, wherein the locking portion of the switching plate is arranged at a position adjacent to the projection of the blade mount.
The electric shaver according to 2 or 31. 35. The engaging portion is located at a notch formed on the protrusion of the blade mounting base, and the blade frame is engaged with the protrusion engaging with the notch with the engaging portion. The electric shaver according to claim 34, further comprising a hook. 36. The electric shaver according to claim 30, wherein the switching plate is provided with a linking portion of the switching plate with a vertical driving member of the switching plate. 37. The switching plate is provided with a rack member on a front portion thereof, and a gear that meshes with the rack member and moves the switching plate up and down by rotation thereof is rotatably mounted on the blade mounting base. The electric shaver according to claim 36, characterized in that: 38. The gear according to claim 37, wherein the gear is a reduction gear for transmitting rotation of the operation button to the rack member and is a partial gear having a large diameter portion and a small diameter portion within the same thickness.
Electric razor as described. 39. The electric shaver according to claim 37, wherein the operation button is formed by an operation portion located outside the main body and a gear portion located inside the main body. 40. The electric shaver according to claim 39, further comprising a click spring that engages with a recess provided in the operation button to generate a click. 41. The electric shaver according to claim 39, further comprising a click spring which engages with a gear of the operation button to generate a click. 42. The electric shaver according to claim 39, further comprising a lock mechanism for locking rotation of the operation button. 43. The electric shaver according to claim 37, wherein the operation unit is disposed in the main body, and a part thereof is exposed from a hole provided on a side surface of the main body. 44. The switching device according to claim 30, wherein the upper end of the projection provided on the front portion of the switching plate projects upward from the upper surface of the blade mount and contacts the lower end surface of the blade frame. Electric razor. 45. The electric shaver according to claim 37, wherein a projection is provided on a part of the gear, and a slide button that engages with the projection is an operation unit that is a vertical drive member. 46. The switching device according to claim 36, wherein a guide groove is formed in a front portion of the switching plate, and a slide button provided with a projection engaging with the guide groove is used as an operation portion serving as a vertical drive member. Electric razor as described. 47. A front end of a switching plate is connected to one end of a link whose central portion is pivotally supported by a blade frame, and the other end of the link is connected to an operating portion serving as a slide button which is a vertical drive member. The electric shaver according to claim 36, wherein: 48. The electric device according to claim 18, wherein a second motor different from the motor for driving the inner blade is provided, and the motor is used as a power source for changing the vertical position of the locking portion on the main body side. Razor. 49. The apparatus according to claim 37, wherein a second motor different from the motor for driving the inner blade is provided, and the motor is used as a power source for driving the gear meshing with the rack member to rotate forward and backward. Electric razor. 50. The electric motor according to claim 48, wherein the eccentric cam is connected to the second motor, and the eccentric cam is engaged with an engagement hole provided in a switching plate provided with a locking portion. Razor. 51. The frame-shaped blade frame has walls on both front and rear sides that cover the outer side of the upper end of the blade mount, and the left and right directions are covered by inner walls of protrusions of the blade mount.
Electric razor as described. 52. A locking portion on a main body side is provided on a slide hook, and the slide hook is connected to a switching plate for driving the slide hook up and down so as to be floatable in a vertical direction. The electric shaver according to claim 21, characterized in that: 53. The sliding hook according to claim 52, wherein the locking portion of the slide hook with the blade frame and the switching plate have a float amount regulating portion formed by a slidable coupling portion between the round boss and the elongated hole. Electric razor. 54. The slide hook is formed of a single component having an elastic leg between a plurality of engaging portions of the blade frame and a fixing portion of the switching plate.
An electric razor according to 2 or 53. 55. The electric shaver according to claim 52, wherein the connecting and fixing portion between the switching plate and the slide hook also serves as a linking portion between the switching plate and the vertical drive unit. . 56. The vertical drive member is a dial-type operation button, and the operation button disposed outside the main body has a cam groove eccentric from the rotation center of the operation button on an inner surface thereof, and the cam groove has The electric shaver according to claim 36 or 55, wherein a cam follower provided on the switching plate is slidably engaged. 57. The electric shaver according to claim 56, wherein the eccentric cam groove has an endless annular shape surrounding the rotation center of the operation button. 58. A portion where the distance of the eccentric cam groove from the rotation center of the operation button is minimum is set as the engagement position of the cam follower when the mounting position of the blade unit is at the lowest position. Item 56. An electric shaver according to Item 56 or 57. 59. The eccentric cam groove is formed so that the curvature gradually changes, and the minimum portion of the curvature is the engagement position of the cam follower when the mounting position of the blade unit is at the lowest position. 56. The method of claim 56.
The electric razor according to any one of Items -58. 60. A click generating spring for generating a click by engaging with a recess provided in the operation button,
As the click generating spring, a click spring for fixing a mounting height of the blade unit and a small click spring for generating a click feeling more finely between clicks by the click spring are provided. 57. The electric shaver according to claim 40 or claim 56. 61. The electric shaver according to claim 60, wherein the small click spring has two symmetrical spring portions and is in symmetrical contact with the operation button. 62. The electric device according to claim 60, wherein a direction in which the click spring applies a spring force to the operation button is substantially orthogonal to a direction in which the small click spring applies a spring force to the operation button. Razor.