JPH0732824B2 - 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. Here, the shaving case 51 is formed in a shape having a window frame portion 51a into which the comb blade unit 50 is fitted, and a finger hooking operation portion 51b which is continuously provided below the window frame portion 51a. Further, as means for attaching the shaving case 51 to the main body case 1 so as to be slidable up and down, and by explaining FIG. 8 showing an embodiment of the present invention, the left and right hooks protruding from the shaving case 51 are provided. A structure is adopted in which the hook portion of the engaging piece 58 is elastically deformed and the hook portion thereof is inserted into and engaged with each slit 59 formed on one side surface of the main body case 1 from the outside.

[0003]

Since the assembly using the hooked engagement piece 58 functions as a temporary fixing means when the shaving case 51 is attached to the main body case 1, the assembly is performed. Has the advantage of being easier. Further, the movable comb blade 54 of the comb blade unit 50 reciprocally vibrates, but this vibration is alleviated by the elastically deformable engagement piece 58 from being transmitted from the shaving case 51 to the body case 1 which also serves as a grip. Therefore, there is an advantage that the vibration of the main body case 1 can be damped so much and the main body case 1 can be gripped without discomfort. However, if the shaving case 51 is simply assembled using the elastically deformable hooked engagement piece 58,
Since the hooked engagement piece 58 leaves room for elastic deformation in the engaged state, it lacks the guide function of sliding the shaving case 51 straight in the vertical direction, and when the shaving case 51 is pushed diagonally. I noticed that it was easy to move up and down in that direction and wobble easily. 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 such a point, and the hooked engagement piece 5
The purpose of the present invention is to stabilize and ensure the vertical sliding movement of the shaving case 51 while adopting the assembly using No. 8.

[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 slidably mounted on the outer wall surface on one side of the upper part of the main body case 1, and when the shaving case 51 is slid to the upper use position, a comb blade is used by the motor 6 installed in the main body case 1. Movable comb blade 54 of unit 50
Is assumed to be driven. Here, the comb blade unit 50 may be preliminarily fixed to the shaving case 51 in such a manner that the comb blade unit 50 projects laterally outward and is not swingable. For example, when the shaving case 51 is slid up and down along the inclined outer side surface of the main body case 1, even if the comb blade unit 50 is always protruding from the case 51, the comb blade unit 50 is in the lowered position when not in use. This is because the 50 can be kept out of the way. Moreover, in the present invention, the shaving case 51, the window frame 51a into which the comb blade unit 50 and the vibrator 69 are fitted, and the window frame 5 are provided.
1a is formed to have a finger hooking operation part 51b continuously provided below the la, and the left and right elastically deformable hooked engagement pieces 58 from the side of the window frame 51a facing the main body case 1 are formed.
The left and right protrusions 62 are provided so as to project from the side of the finger hooking operation portion 51b facing the main body case 1, and the hooked engagement piece 58 has a slit 59 formed on the outer wall surface on one side of the upper portion of the main body case 1. Is slidably inserted into the upper and lower parts of the main body case 1, and the slit 5 is formed on the outer wall surface on one side of the upper part of the main body case 1.
9. A long hole 61 is formed below 9 and the projection 62 is connected to the abutting plate piece 60 arranged on the inner surface side of the main body case 1 through the long hole 61.

[0005]

In this case, the shaving case 51 is slidably supported in the vertical direction by the upper and lower hooked engagement pieces 58 and the projection 62 with respect to the main body case 1. At this time, the movable comb blade 54 which is the vibration source of the shaving case 51
In the window frame portion 51a in which is fitted, the vibration of the movable comb blade 54 can be transmitted to the main body case 1 from the shaving case 51 to the main body case 1 by the engaging piece 58 with the hook provided in the window frame portion 51a. Relax as long as possible. Then, in the finger hooking operation portion 51b where the pressing load by the finger is most strongly exerted, the projection 62 disposed on the finger hooking operation portion 51b penetrates the elongated hole 61 of the main body case 1 and is guided in the vertical direction. Since the main body case 1 is sandwiched between the projection 62 and the abutting plate piece 60, the case 60 can be easily pressed even when the shaving case 51 is strongly pressed with a finger or obliquely. It is possible to guide vertically and straightly and stably without wobbling or moving up and down in an oblique direction. Moreover, even if the lower finger-holding operation portion 51b tries to meander with a strong operating force, the elastic force of the upper hooked engaging piece 58 is urged to return to the normal position, and a smooth vertical sliding operation is realized. .

[0006]

Therefore, according to the present invention, the shaving case 51 is attached to the main body case 1 at the upper and lower engaging pieces 5 with hooks.
8 and projections 62 are slidably supported in the vertical direction so as to prevent the vibration of the shaving case 51 from being transmitted to the main body case 1 as much as possible, and furthermore, the shaving case 51 can be wobbled or moved up and down diagonally. Instead, it has the advantage that it can be guided straight up and down in a stable manner.

[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 having a comb blade unit 50 is attached to the upper outer surface of the rear case 1b so as to be vertically slidable between a use position where the main case 1 is raised and a non-use position where the case is pulled down. In FIG. 7, the shaving case 51 is a comb blade unit 50.
The window frame portion 51a having the opening 57 to be fitted inside and the finger-hanging operation portion 51b integrally formed below the window frame portion 51a are formed. The comb blade unit 50 includes a fixed comb blade 53 fixed to a holder 52 and the fixed comb blade 5
3 and a movable comb blade 54 which is slidably contacted and is reciprocally driven in the lateral direction. The fulcrum pins 55, 55 projecting from the left and right outer sides of the holder 52 are engaged and supported by pin receiving recesses 56, 56 formed on the left and right inner surfaces of the upper part of the shaving case 51,
The comb blade unit 50 as a whole swings around the fulcrum pin 55, and the opening 5 formed on the upper rear surface of the shaving case 51.
You can leave from 7.

In the same FIG. 7, engaging pieces 58 with hooks are provided on the front side of the window frame portion 51a of the shaving case 51 from the left and right sides at substantially the same position as the location of the comb blade unit 50.
-58 is projected toward the front. This engaging piece 58
Numeral 58 is inserted and engaged so as to be vertically slidable while being elastically deformed in slits 59, 59 formed in the left and right of the rear surface of the rear case 1b so as to be elongated vertically. A backing plate piece 60 is arranged on the inner surface side of the rear case 1b.
The bosses 60a, 60a projecting from the left and right of the rear surface of the rear case
-Left and right protrusions 62 that are engaged with 61 and project from the front surface side of the finger hanging operation portion 51b of the shaving case 51
-Engaged and connected to 62. Each protrusion 62 is a boss 60a
9 and the heads of the projections 62 are crushed and crimped as shown in FIG. 9 so that the wrinkle shaving case 51 can be slid up and down at two positions above and below the rear case 1b. Suspended and supported.

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 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]

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 58 Engagement Piece with Hook 59 Slit 60 Patch Plate Piece 61 Long Hole 62 Protrusion 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 one outer wall surface of the upper part of the main body case 1 so as to be slidable up and down, and when the fine shaving case 51 is slid to an upper use position, a comb blade is formed by the motor 6 installed in the main body case 1. In an electric shaver configured to drive a movable comb blade 54 of a unit 50, a shaving case 51, a window frame portion 51a into which a comb blade unit 50 and a vibrator 69 are fitted, and a window frame portion 51a which is continuously provided below the window frame portion 51a. And a finger hooking operation part 51b which is elastically deformable from the side of the window frame 51a facing the main body case 1.
Left and right protrusions 62 are provided so as to project from the side of the body case 1 facing the body case 1, and the hooked engagement piece 58 is vertically slidably inserted into a slit 59 formed on the outer wall surface of the body case 1 on the upper side. An elongated hole 61 is formed below the slit 59 of the outer wall surface on one side of the upper part of the main body case 1 which is engaged, and the projection 6 is formed through the elongated hole 61.
An electric shaver, characterized in that 2 is connected to a pad plate piece 60 arranged on the inner surface side of the main body case 1.