JPH0790056B2 - Electric razor - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric shaver having a comb blade unit for shaving.

[0002]

2. Description of the Related Art As a general prior art for this type of electric shaver, a comb blade unit for shaving is arranged at a fixed position on the outer wall surface of a main body case so that it can be oscillated and swung. It is well known that the blade unit is raised to the lateral outside of the main body case so as to be in a substantially horizontal posture and driven, and when not in use, the comb blade unit is pushed down to the main body case side to be in a non-driven state by a button operation. In this known form, the comb blade unit may oscillate and oscillate at a fixed position of the main body case, so that the upper end of the main body case may stick to the skin when the comb blade unit is raised.
The protrusion of the comb blade unit is hard to see, making it difficult to use.
In order to improve this point, if the amount of protrusion of the comb blade unit from the main body case is to be made large, the comb blade unit will still protrude greatly when not in use, which is inconvenient for carrying and storage. Therefore, the present applicant first proposes an improvement plan for solving these problems in Japanese Patent Application No. 59-189.
No. 242 (Japanese Utility Model Laid-Open No. 61-103076) and the like. This will be described by borrowing FIGS. 9 and 10 showing an embodiment of the present invention. A shaving case 51 is slidably mounted on the upper outer wall surface of the main body case 1,
The comb blade unit 50 is pivotally supported around the fulcrum pin 55 in the case 51 so that the comb blade unit 50 can be moved back and forth. When the shaving case 51, which also serves as an operation button, is slid upward during use, the comb blade unit 50 is lifted up to near the upper end of the main body case 1 and protrudes laterally outward of the case 51. The unit 50 can be driven. When the shaving case 51 is slid downward when not in use, the comb blade unit 50 moves downward so as not to get in the way, falls to the shaving case 51 side, and switches to the non-driving state. There, shaving case 5
1 Window frame part 5 in which comb blade unit 50 can be fitted in and out freely
1a and a finger-hanging operation part 51b integrally formed below the window frame part 51a.

[0003]

When the shaving case 51 is integrally formed with the finger-holding operation portion 51b as described above, the shaving case 51 also functions as the vertical slide operation button. There is an advantage that the number of points and the assembling process are reduced to facilitate the assembling. However, on the outer wall surface of the shaving case 51, when the mouth of the blade of the comb blade unit 50 and the finger hanging surface are located on the same plane up and down, when the shaving case 51 is slid up and down. There is a risk that a finger placed on the finger-holding surface may slip and cause injury at the blade edge of the comb blade unit 50.
In particular, this type of shaving case 51 is inevitably large in size in order to increase the amount of protrusion of the main body case 1 upward and to improve the finger-holding operability. The present invention focuses on this point, and aims to improve the operability of the vertical shaving case 51 in terms of vertical sliding and to ensure safety.

[0004]

The electric shaver of the present invention has a fixed comb blade 53 and a movable comb blade 54 as shown in the drawings.
A shaving case 51 having a comb blade unit 50 consisting of a shaving blade unit 50 that swings back and forth around a fulcrum pin 55 is slidably mounted on an outer wall surface on one upper side of the main body case 1, and the shaving case In the state in which 51 is slid to the upper use position, the comb blade unit 50 projects outward from the shaving case 51 , and the motor 6 incorporated in the main body case 1 drives the movable comb blade 54 of the comb blade unit 50. It is assumed that it is configured as follows. In addition, according to the present invention, the shaving case 51 has the window frame portion 51a into which the comb blade unit 50 is fitted so as to be able to swing forward and backward, and the window frame portion 51.
a finger-hanging operation part 51b continuously provided below a, and a finger-hanging protrusion 83 protruding outward from the outer wall surface of the finger-hanging operation part 51b, and a window frame. The portion 51a is formed so as to project outward from the outer wall surface of the finger-hanging operation portion 51b.
b on the outer wall surface of, between the lower end 84 and the finger hanging protrusion 83 of the projecting portion of the window frame portion 51a, that are recessed finger inserting space 85, the lower end 84 of the projecting portion of the window frame portion 51a A comb blade
Comb fixed with the knit 50 stored in the window frame 51a
The edges of the blade 53 and the movable comb blade 54 are located outside the window frame portion 51a.
The feature is that it is projected to a position where it does not come out .

[0005]

When the shaving case 51 is slid up and down, the finger-hooking projection 8 on the outer wall surface of the finger-hooking operation section 51b is operated.
By putting a finger on the finger 3, the sliding operation can be surely performed without sliding the finger. When the shaving case 51 is slid upward, even if the finger hanging on the finger-hanging protrusion 83 may slide upward, the window frame 51
Since the lower end 84 of the protruding portion of a can be prevented from sliding further upward, contact with the blade edge of the comb blade unit 50 can be avoided and no injury will occur. When the shaving case 51 is slid downward, even if the finger is put in the finger-holding space 85 and the finger is pulled down, the finger-holding projection 83 can prevent the finger from sliding further downward. This lowering operation can be performed safely.

[0006]

Therefore, according to the present invention, the window frame portion 51a of the shaving case 51 is formed so as to project outward from the outer wall surface of the finger-holding operation portion 51b, and the window frame portion 51 on the outer wall surface is formed.
There is an advantage that the vertical sliding operation can be safely and reliably performed with a finger by a simple means of providing a finger inserting space 85 between the lower end 84 of the protruding portion of a and the finger hanging projection 83.
Moreover, the lower end 84 of the protruding portion of the window frame 51a is
When the knit 50 is in the retracted state, the fixed / movable comb blades 53/54
To the position where the blade tip does not come out from the window frame 51a
Since it protrudes, the upper shave of the shaving case 51 is slid.
In addition to the anti-slip action of your fingers when operating the
Fixed or movable even if it gets over the lower end 84
There is no risk of finger injury with the blade edges of the comb blades 53 and 54.
The safety can be further enhanced.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 5 and 6 show the entire external appearance of the electric shaver according to the present invention from the front and back, and FIGS. 1 to 4 show the cross-sections of the main parts thereof. The main body case 1 of this is composed of a front case 1a and a rear case 1b in a two-part structure. After the front and rear cases 1a and 1b are butted, the U-shaped decorative frame 2 is attached to the front and rear cases 1a and 1b. As shown in FIG. 7, the both ends 2a, 2a of the decorative frame 2 are engaged with the engaging pieces 3.3 formed on the rear case 1b so as to be wound around the upper part. With this, the front and rear cases 1a and 1b are temporarily fixed. After that, the upper two places of the front and rear cases 1a and 1b are joined by screws t. A motor mount 4 is attached to the upper part of the main body case 1. A biaxial motor 6 having output shafts 5a and 5b on the upper and lower sides is fixed to the lower surface of the mounting base 4 with screws. In the main body case 1, two rechargeable batteries 7 and 7 are arranged at the left and right sides of the motor 6, and a circuit board 8 is incorporated. The main body case 1 has a pair of charging plugs 9 at the lower end thereof, and a display portion 10 of a light emitting diode (not shown) which is turned on during charging is provided at the lower part of the front surface of the case.

In FIGS. 2 and 5, a decorative panel 11 is caulked and fixed to the outside of the front surface of the front case 1a. A switch knob 12 facing the outside is provided at the right end portion of the panel 11, and a leg 12a continuously provided inside the switch knob 12 is fitted to an operation piece 13a of a push-on / push-off type switch 13 on the substrate 8. Each time the knob 12 is connected, the switch 13 is turned on / off to start and stop the motor 6.

2 and 3, the switch knob 1
2, a lock plate 14 for the knob 12 is attached to the inner surface of the front case 1a so as to be slidable up and down, and a lock button 14a connected from the lock plate 14 is provided.
Is exposed outside the front of the case. Lock button 14
When a is pushed down as shown in the figure, the switch knob 12 is allowed to be pushed in. When the lock button 14a is pushed up and the lock plate 14 is slid upward, the lock piece 14b connected to the upper part of the lock plate 14b. 14b engages with a part of the switch button 12 to prevent the button 12 from being pressed. Arm 1 connected from the lower end of lock plate 14
4c and 14c and the pin 15 protruding from the inner surface of the front case 1a
The lock plate 14 is moderately held at the upper and lower slide positions by elastic engagement with.

2 and 8, the lower output shaft 5b of the motor 6 has a black portion 1 at a constant circumferential pitch on the outer peripheral surface.
A rotor 17 having a number 6 is attached, and a photo interrupter 19 attached to a substrate 18 faces the rotor 17. The photo interrupter 19 irradiates the rotor 17 with light emitted from the light emitting diode, detects the reflected light by the phototransistor, and detects the motor rotation speed by the pulsed detection signal extracted from the photo interrupter 19. A control circuit for controlling the voltage applied to the motor 6 on the basis of this detection to maintain the motor rotation speed within a certain range is assembled to the substrates 8 and 18. A two-color light emitting diode 20 is attached to the substrate 8. The light emitting diode 20 emits green light when the above-described rotation speed control is properly performed, and the light emitting diode 20 turns red when the voltage of the battery 7 drops to some extent. When the voltage drops further, it stops emitting light and notifies the necessity of charging. As shown in FIG. 4, a plastic lens 21 having a front diverging shape is externally fitted and mounted on the light emitting diode 20, and the transparent panel 2 mounted on the upper portion of the front case 1a.
The front end of the lens 21 faces the back of the lens 2. Lens 21
The inner inner surface a and the outer peripheral surfaces b and c are formed on a textured surface such as a textured surface so as to diffuse the light emitted from the diode 20 and diffuse it widely from the front surface of the lens 21.

In FIGS. 2 and 3, a reciprocating vibration type razor unit 30 is provided on the upper portion of the main body case 1. This razor unit 30 is configured such that a large number of inner blades 34 arranged in parallel in the inner blade holder 33 reciprocate left and right with respect to the inner surface of the mesh-shaped outer blade 32 supported by the outer blade holder 31. It is a thing. The inner blade holder 33 is fitted and supported by a bracket 37 attached to a top support shaft 36 of a vibrator 35 mounted on the upper end of the main body case 1. The bracket 37 is movable up and down with respect to the support shaft 36, and is supported by a sleeve 39 urged by a spring 38 so as to be swingable in a balance-like manner via a fulcrum 40.
By the degree of freedom of the bracket 37 supported by the inner blades 34, the inner blades 34 are brought into close contact with the inner surfaces of the outer blades 32 as a whole. Outer blade holder 31
Is a projection 41 that is projected from both left and right side surfaces of the main body case 1.
It is detachably locked and fixed at 42. Protrusion 41 on the right side of the figure
Is provided at the tip of an arm 43 provided upright from one end of the motor mount 4, and the protrusion 41 can be retracted by elastic deformation of the arm 43. The protrusion 42 on the left side is urged to project by a spring 44, and can be artificially moved in and out by a knob 45.

Thin legs 46, 46 are provided at both left and right ends of the vibrator 35. The upper ends of the legs 46 are the front and rear cases 1.
The engaging recesses 47, 47 formed on the joint surface a, 1b are engaged and fixed from the front and back, and the entire vibrator 35 can be moved in the left-right direction substantially in parallel by the deformation of the left and right legs 46. This oscillator 3
5 is a balancer 48 attached to the upper output shaft 5a of the motor 6.
Is linked to the upper eccentric pin 49 and is driven to reciprocate left and right with a constant stroke as the motor 6 rotates.

A shaving case 51 equipped with a comb blade unit 50 is slid up and down on an outer wall surface on one upper side of the rear case 1b between a use position in which the main case 1 is raised and a non-use position in which it is pulled down. Can be installed freely. 7 and 9, the shaving case 51
It is formed to have a window frame portion 51a having an opening 57 into which the comb blade unit 50 is fitted, and a finger hanging operation portion 51b integrally formed below the window frame portion 51a. On the outer wall surface of the finger-hanging operation part 51b, a finger-hanging protrusion 83 protruding outward from the outer wall surface is provided, and at the same time, the window frame part 51a.
Is formed so as to project outward from the outer wall surface of the finger hanging operation portion 51b. Then, on the outer wall surface of the finger hanging operation section 51b,
A finger insertion space 85 is provided between the lower end 84 of the protruding portion of the window frame portion 51a and the finger-hanging protrusion 83. Window frame portion 51a
Of the protrusion height H from the outer wall surface of the finger hanging operation portion 51b is
The protrusion height 83 of the finger-hooking projection 83 is set higher than the protrusion height h of the finger-hooking operation part 51b from the outer wall surface (see FIG. 1). This is because there is a greater danger in the push-up operation than in the pull-down operation of the shaving case 51 due to the relationship between the cutting edge of the comb blade unit 50 and the finger, and it is possible to more reliably prevent the finger from sliding up. This is because the higher the finger-hanging projection 83 is, the more the user feels that it is bitten when operating, and this is alleviated.
The comb blade unit 50 includes a fixed comb blade 53 fixed to a holder 52, and a movable comb blade 54 slidably contacting the fixed comb blade 53 and reciprocally driven in the lateral direction. Holder 52
The fulcrum pins 55, 55 projecting from both the left and right outer sides of the comb shaving case 5 are engaged and supported by the pin receiving recesses 56, 56 formed on the left and right of the inner surface of the window frame 51a of the shaving case 51.
0 The whole swings around the fulcrum pin 55, and can be moved back and forth through the opening 57 of the window frame portion 51a of the shaving case 51. Up
The lower end 84 of the protruding portion of the writing window frame 51a is a comb blade unit.
Fixed comb blade 50 in a state in which 50 is swingably stored in the window frame portion 51a
The cutting edges of the movable comb blade 54 and the movable comb blade 54 are the openings 57 of the window frame portion 51a.
It is projected to a position where it cannot go out further.

In the same FIG. 7, engaging pieces 58 with hooks 58 are provided forwardly on the left and right sides of the shaving case 51 near the top of the shaving case 51 at substantially the same positions as where the comb blade unit 50 exists. There is. The engaging pieces 58, 58 are vertically slidably inserted into and engaged with slits 59, 59 formed vertically in the left and right of the rear surface of the rear case 1b. A backing plate piece 60 is arranged on the inner surface side of the rear case 1b, and the bosses 6 projecting on the left and right sides of the back surface of the backing plate piece 60 are arranged.
0a and 60a are respectively engaged with the long holes 61 and 61 formed in the left and right of the rear case 1b in the vertical direction, and
Protrusions 62.6 protruding right and left from the front of the shaving case 51
2 is engaged and connected. In the illustrated example, the protrusions 62 are fitted into the holes of the boss 60a, and the heads of the protrusions 62 are joined by crushing and crimping as shown in FIG. 9, which allows the wrinkle shaving case 51 to be attached to the rear case 1b. On the other hand, it is supported by two upper and lower guides so that it can slide up and down freely.

8 and 12, the rear case 1b
After assembling the shaving case 51 in which the comb blade unit 50 is assembled in advance on the outer side of the upper one side of the motor mounting base 4, the motor mounting base 4 is mounted on the inner surface side of the rear case 1b. Both ends 63 of the protruding piece 63, 63 provided
a. 63a is inserted into the slits 59, 59 at the inner side portions of the hooked engagement pieces 58, 58 engaged with the slits 59, 59, whereby the engagement pieces 58, 58 are deformed inward. That is, the protrusion 63
Both ends 63a, 63a of 63 are prevented from contacting with each other.

7 and 11, the rear case 1b
Also, both ends 66a and 66b of the spiral spring 66, which are wound in the small holes 64 and 65 formed in the contact plate piece 60, are engaged in the initial winding deformed state. At this time, when the shaving case 51 is in the downward slide position, the free end 66b of the spring 66 is urged.
When the shaving case 51 is in the upper slide position by pushing down the shaving case 51 with the downward restoring force of the shaving restoring force, the shaving case 51 is moved upward by the shaving restoring force of the free end 66b. Push up.

In FIGS. 7 and 8, a cover plate 67 is fitted and connected to the upper front surface of the shaving case 51, and the comb blade unit 50 can be inserted between the cover plate 67 and the standing wall 68 in the opening 57. A vibrator 69 made of plastic for driving the moving blade 54 is incorporated. The vibrator 69 has thin legs 70, 70 on the left and right, and the lower ends 70a, 70a of the legs 70, 70 are connected to the standing wall 68.
It is driven and supported in the engaging holes 71 formed on the front surface of the.
An engaging recess 73 into which an engaging piece 72 provided in the upper center of the movable comb blade 54 is formed is formed in the upper portion of the vibrator 69, and a bifurcated engaging protrusion 74 is provided in the center front surface of the vibrator 69. The engaging projection 74 is projected forward from a recess 75 formed in the lower central portion of the cover plate 67. The engaging projection 74 projects into the main body case through a through hole 76 formed in the center of the rear surface of the rear case 1b, and when the shaving case 51 is in the upper slide position, the rear end surface of the vibrator 35 of the razor unit 30 is increased. Engages with the protrusion 77 provided on the. The through hole 76 has an upper portion formed to have a wide width that allows the engaging projection 74 to move to the left and right, and a lower portion formed to have a small width so as to guide and hold the engaging projection 74 in the lateral center position. This keeps the vibrator 69 in a neutral posture in a state where the shaving case 51 is slid and displaced to the lower non-use position so that the legs 70 of the vibrator 69 do not undergo creep deformation even if left for a long time. I chose In the non-use state, the engagement protrusion 74 is always located in the center, so that the engagement with the protrusion 77 of the vibrator 35 on the main body case side can be smoothly performed in the next use.

Next, the retracting operation structure of the comb blade unit 50 will be described. In FIG. 7, a pivot support hole 78 eccentric to the fulcrum pin 55 is provided on one side of the holder 52 in the comb blade unit 50, and the operation arm 80 is pivotally connected to the pivot support hole 78 via the pin 79. Has been done.
The operation arm 80 is incorporated in the shaving case 51 so as to be vertically movable, and an operation piece 80a directed forward is continuously provided at a lower end of the operation arm 80. The operation piece 80a protrudes forward through the cover plate 67 and is engaged with a side slit portion 81 that is continuous with one slit 59 provided in the rear case 1b.

When the shaving case 51 is in the lower non-use position, the operation piece 80a of the operation arm 80 is brought into contact with the lower end of the side slit 81 to regulate the position as shown in FIG. The blade unit 50 is fixed / movable inside the opening 57, and the cutting edges of the comb blades 53/54 are located outside the opening 57.
The posture is such that it is stored in a state where it cannot be sent out . On the other hand, a finger is placed on the finger-hanging protrusion 83 or the finger-holding space 85
When a finger is put inside and the shaving case 51 is slid upward and moved to the use position, the operation piece 80a is abutted against the upper end of the side slit portion 81 during the upward movement, and the shaving is further performed. By moving the case 51 upward, the operating arm 80 is relatively lowered downward relative to the shaving case 51, whereby the comb blade unit 50 is swung up around the fulcrum pin 55 and swung.
It projects outward from the rear side through the opening 57 (see FIG. 10). At this time, even if a finger slides upward on the outer wall surface of the finger-hanging operation portion 51b, it is stopped at the lower end 84 of the protruding portion of the window frame portion 51a, so that the protruding blade edge of the comb blade unit 50 may cause injury. There is no such thing. As in the case of the upward sliding operation, when the finger is put on the finger-hanging projection 83 or the finger is put in the finger-holding space 85 and the shaving case 51 is slid downward, the operation piece 8 is first in the middle thereof.
0a abuts on the lower end of the side slit portion 81, and further, the downward movement of the shaving case 51 causes the operation arm 80 to be relatively pushed up, and the comb blade unit 50 is swung downward and stored ( (See FIG. 9).

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a main part.

FIG. 2 is a vertical side view of the whole.

FIG. 3 is a partially cutaway front view.

FIG. 4 is a sectional view taken along line BB in FIG.

FIG. 5 is an overall external view seen from the front.

FIG. 6 is an overall external view seen from the rear.

FIG. 7 is an exploded perspective view of a main body case and a shaving case.

FIG. 8 is an exploded perspective view of a rear case and a shaving case.

FIG. 9 is a vertical cross-sectional side view of a main part of the comb blade unit when not in use.

FIG. 10 is a vertical cross-sectional side view of essential parts for explaining the operation of the comb blade unit during use.

FIG. 11 is a front view showing a vertically slidable state of the shaving case.

12 is a cross-sectional view taken along the line AA in FIG.

[Explanation of symbols]

 1 Body Case 6 Motor 50 Comb Blade Unit 51 Shaving Case 51a Window Frame 51b Finger Hooking Operation Section 53 Fixed Comb Blade 54 Movable Comb Blade 69 Transducer 83 Finger Hooking Protrusion 84 Lower Edge of Window Frame Projection 85 Finger Insert space

Claims (1)

[Claims] 1. A shaving case 51, which is provided with a comb blade unit 50 consisting of a fixed comb blade 53 and a movable comb blade 54 so as to be able to move back and forth around a fulcrum pin 55, is provided on the upper side of one side of the main body case 1. It is mounted on the outer wall so as to be slidable up and down, and when the shaving case 51 is slid to the upper use position, the comb blade unit 50 projects to the outside of the shaving case 51 and is installed inside the main body case 1. In an electric shaver configured to drive a movable comb blade 54 of a comb blade unit 50 by a motor 6, a shaving case 51, a window frame portion 51a into which the comb blade unit 50 is fitted so as to be able to swing forward and backward, and the window frame. The finger-hanging operation part 51b is provided below the part 51a, and the finger-hanging operation part 51b is provided with a finger-hanging protrusion 83 protruding outward from the outer wall surface. In addition, the window frame portion 51a is formed so as to protrude outward from the outer wall surface of the finger hanging operation portion 51b, and the lower end 84 of the protruding portion of the window frame portion 51a and the finger hanging operation portion are formed on the outer wall surface of the finger hanging operation portion 51b. between the projections 83, tare recessed finger inserting space 85 is, the lower end 84 of the projecting portion of the window frame portion 51a is gang unit 5
0 is stored in the window frame portion 51a and the fixed comb blade 53
The tip of the movable comb blade 54 does not go out from the window frame 51a
Electric shaver characterized that you have made to project to a location.