JPH0785753B2 - 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 surface of a body case so that it can be undulated and rocked, and a comb blade can be operated by a button at the time of use. It is well known that the unit is driven by raising it to the lateral outside of the main body case in a substantially horizontal posture, and when not in use, the comb blade unit is tilted to the main body case side to be in a non-driven state by a button operation. In this well-known form, the comb blade unit may oscillate and oscillate at a fixed position of the main body case.Therefore, the upper end of the main body case may get stuck on the skin or the tip of the comb blade unit may be protruded when the comb blade unit is raised. It is hard to see and is not easy to use. In order to improve this point, if you try to make a large amount of protrusion of the comb blade unit from the main body case, it will still protrude greatly even when the comb blade unit is collapsed when not in use,
Inconvenient to carry and store. Therefore, the present applicant has proposed an improvement plan for solving these problems in Japanese Patent Application No. 59-18924.
No. 2 (Japanese Utility Model Publication No. 61-103076) and the like. This is shown in FIGS. 9 and 10 showing an embodiment of the present invention.
The shaving case 51 is mounted on the outer surface of the upper portion of the main body case 1 so as to be slidable up and down, and the comb blade unit 50 is pivotally supported on the case 51 so as to swing back and forth.
When the shaving case 51, which also functions as an operation button, is slid upward when in 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. In this state, 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, the shaving case 51 is a plastic molded product, and has a window frame portion 5 having an opening 57 into which the comb blade unit 50 is fitted.
1a and a finger-hanging operation portion 51b integrally formed below the window frame portion 51a, and pin receiving concave portions 56 are formed on the left and right inner surfaces of the window frame portion 51a.
The fulcrum pins 55 projecting from the left and right outer sides of the comb blade unit 50 are engaged. Also, the shaving case 51
As a means for vertically slidably attaching to the main body case 1, the explanation will be given with reference to FIG. 8 showing the embodiment of the present invention. The left and right hooked engagement pieces 58 protruding from the shaving case 51 will be described below. A structure is adopted in which the slits 59 formed on one side surface of the main body case 1 are inserted and engaged from the outside.

[0003]

As described above, the assembly of the comb blade unit 50 into the shaving case 51 is performed by the fulcrum pin 5
5 and the pin receiving recess 56, the assembly can be easily carried out, and the assembling of the shaving case 51 using the engaging piece 58 with the hook is carried out temporarily when the shaving case 51 is attached to the main body case 1. Since it functions as a stopping means, it has an advantage that assembly is easy. However, the rectangular window frame portion 51a having the opening 57 of the shaving case 51
Has a shape that is easily deformed with time, and is particularly easily deformed in a high temperature environment. For this reason, when the window frame portion 51a is deformed to expand the opening 57 to the left and right after the assembling of the shaving case 51, the fulcrum of the comb blade unit 50 is subjected to vibration and external force. It has been noticed that the pin 55 is likely to come off the pin receiving recess 56, which hinders the subsequent rotation of the comb blade unit 50. This is
The hooked engagement piece 58 hooks the finger under the shaving case 51.
It is provided on the operation part 51b, and the window frame part 51a part is a book.
Because it was not fixed to the body case 1 at all
It Of course, it is conceivable that the comb blade unit 50 is specially prevented from coming off. However, if the number of parts and the assembling process are increased for that reason, the assembling means via the fulcrum pin 55 and the pin receiving concave portion 56 will be described. It is not a good idea because there is no point in using a hook engaging means. The present invention pays attention to such a point, and makes it possible to easily perform a process of preventing the comb blade unit 50 from coming off due to the deformation of the shaving case 51, without requiring addition of a special part or an assembling process. The purpose is to

[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.
Shaving case 5 with comb blade unit 50
1 is mounted on the outer surface of the upper part of the main body case 1 so as to be slidable up and down. When the shaving case 51 is slid to the upper use position, the motor 6 incorporated in the main body case 1 causes the comb blade unit 50 to move. It is assumed that the movable comb blade 54 is configured to be driven. On top of that,
In the present invention, the shaving case 51 and the comb blade unit 50
A window frame portion 51a having an opening 57 that fits inside, and a finger-hanging operation portion 51b that is continuously provided below the window frame portion 51a. The left and right inner surfaces of the window frame portion 51a and the left and right sides of the comb blade unit 50 are formed. Forming a fulcrum pin 55 and a pin receiving recess 56 into which the fulcrum pin 55 engages, between the opposite surfaces to both outsides, and engaging pieces with hooks from the side of the window frame 51a of the shaving case 51 to the left and right 58 is provided so as to project, and the engaging piece 58 is inserted and engaged with a slit 59 formed on the outer wall surface on one side of the upper portion of the main body case 1.

[0005]

In this case, the comb blade unit 50 is fitted into the shaving case 51, and then the shaving case 51 is engaged with the outside of the upper outer surface of the main body case 1 through the slit 59 and the hooked engaging piece 58. When mated, the hooked engagement piece 58 is prevented from being displaced outward in the left-right direction by the slit 59.
The shaving case 51 is blocked by the window frame 51a.
It is possible to suppress the deformation of expanding the opening 57 of the right and left outwards, and prevent the comb blade unit 50 from coming off.

[0006]

Therefore, according to the present invention, by simply inserting and engaging the hooked engagement piece 58 of the shaving case 51 with the slit 59 of the main body case 1, special parts can be added and the number of assembling steps can be increased. There is an advantage in that the comb blade unit 50 can be prevented from coming off due to the deformation of the shaving case 51 without inviting it.

[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 FIGS. 2 and 4, a plastic lens 21 having a front diverging shape is externally fitted to the light emitting diode 20, and the front end of the lens 21 is attached to the back of the transparent panel 22 mounted on the upper part of the front case 1a. Facing.
The inner back surface a and the outer peripheral surfaces b and c of the lens 21 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 12, the shaving case 5
1 is an opening 57 into which the comb blade unit 50 is fitted.
It is formed to have a window frame portion 51a having the above, and a finger hanging operation portion 51b integrally formed below the window frame portion 51a. 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. The fulcrum pins 55, 55 protruding from the left and right outer sides of the holder 52
The comb blade unit 50 is supported by being engaged with pin receiving recesses 56 formed on the left and right of the inner surface of the window frame 51a of the shaving case 51, and the comb blade unit 50 as a whole swings around the fulcrum pin 55 to open the shaving case 51. You can leave from 57.

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 engagement pieces 58, 58 are vertically slidably inserted into and engaged with slits 59, 59 formed in the left and right sides of the rear surface of the rear case 1b, respectively, so that the engagement pieces 58, 58 are displaced outward. That is, the displacement in the engaging direction is abutted and regulated by the walls inside the slits 59. A backing plate piece 60 is arranged on the inner surface side of the rear case 1b, and bosses 60a, 60a projecting from the back side of the backing plate piece 60 on the left and right sides of the back case 1b are elongated holes formed in the up and down direction respectively on the left and right sides. 61. A protrusion 62 that is engaged with 61 and protrudes from the left and right of the front surface of the shaving case 51.
-Engaged and connected to 62. 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.

In FIGS. 1 and 8, a shaving case 51 having a comb blade unit 50 pre-assembled is attached to the outside of one side surface of the rear case 1b, and then the motor mount 4 is attached to the inner surface of the rear case 1b. By assembling, both end portions 63a of the projecting pieces 63, 63 which are continuously provided on the rear portion of the motor mounting base 4
63a are 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 to the inside, In other words, the deformation in the disengagement direction is
Abutting is prevented at both ends 63a and 63a.

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 case 51 so as to be vertically movable, and a lower end of the operation arm 80 is provided with an operation piece 80a directed forward. The operation piece 80a protrudes forward through the cover plate 67, and the rear case 1b
It is engaged with a side slit portion 81 that is continuous with one slit 59 provided in the.

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 in a posture in which it is stored inside the opening 57. On the other hand, when the shaving case 51 is slid upward and moved to the use position, the operation piece 80a is restricted from contacting the upper end of the side slit portion 81 during the upward movement, and the case 51 is further moved upward. Then, the operation arm 80 is relatively pulled down with respect to the case 51, and with this, the comb blade unit 5
0 is swung up around the fulcrum pin 55, and the opening 57
From the rear side to the outside. When the shaving case 51 is operated to move downward, the operation piece 80a first comes into contact with the lower end of the side slit 81 in the middle of the operation, and the operation arm 80 is relatively pushed upward by the downward movement of the case 51. ,
The comb blade unit 50 is swingably stored downward.

[Brief description of drawings]

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

FIG. 2 is a vertical sectional side view.

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 main body case and a rear 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.

FIG. 12 is an exploded perspective view of a shaving case and a comb blade unit.

[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 55 Support Point Pin 56 Pin Receiving Depth 57 Opening 58 Hooking Engagement Piece 59 Slit 69 Transducer

Claims (1)

[Claims] 1. A shaving case 51 having a comb blade unit 50 comprising a fixed comb blade 53 and a movable comb blade 54.
Is mounted on the outer wall surface on one side of the upper part of the main body case 1 so as to be slidable up and down, and when the shaving case 51 is slid to the upper use position, the motor 6 installed in the main body case 1 uses a comb blade. In an electric razor configured to drive a movable comb blade 54 of a unit 50, a shaving case 51 has a window frame portion 51a having an opening 57 into which the comb blade unit 50 is fitted, and a window frame portion 51a continuously provided below the window frame portion 51a. Formed with the finger rest operation part 51b,
The fulcrum pin 55 and this fulcrum pin 55 are provided between the inner surface of the window frame portion 51a and the left and right outer surfaces of the comb blade unit 50 facing each other.
Is formed with a pin receiving recess 56 into which the left and right hooking engagement pieces 58 project from the side of the window frame portion 51a of the shaving case 51. An electric shaver characterized by being inserted and engaged with a slit 59 formed on an outer wall surface on one side of an upper portion.