JPH05184733A - Electric razor - Google Patents

Abstract

PURPOSE:To prevent dust on a dust receiving surface, from being advanced toward the sliding surface of the side-shaving case, and perform the vertically sliding operation of the side-shaving case smoothly. CONSTITUTION:On the external surface of the upper wall of a main body case 1, a dust receiving surface 83 is formed, and on the rear side surface of the upper section of the main body case 1, a side-shaving case 51 is fitted vertically and slidably. At a rear end on the side of the side-shaving case 51 on the dust receiving surface 83, a salient wall 84 for preventing dust from being advanced toward the sliding surface of the side-shaving case 51 is formed.

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 razor, 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 driven to the lateral outer side of the main body case in a substantially horizontal posture and driven, 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 known form, the comb blade unit may oscillate and swing 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 is intended for rotary electric razors with a rotary inner blade.The rotary shaft is projected from both ends of the motor, the rotary inner blade is rotated by the rotary shaft at one end, and the rotary shaft at the other end can be rotated. The object is different from a reciprocating electric shaver having a reciprocating vibration type inner blade 34 as shown in FIGS. 9 and 10 for driving a comb blade unit for shaving. As for the comb blade unit, as shown in FIGS. 9 and 10, a shaving case 51 is slidably mounted on the outer wall surface on one side of the upper portion of the main body case 1, and the comb blade unit 50 is moved back and forth in the case 51. Freely pivot. 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. Shaving case 5 when not in use
When 1 is operated to slide downward, the comb blade unit 50 moves downward so as not to get in the way, and the shaving case 51
It falls to the side and switches to the non-driving state.

[0003]

The problem here is, as shown in FIGS. 9 and 10, a shaving case on one side of the dust receiving surface 83 formed on the outer surface of the upper wall of the main body case 1. In the structure in which 51 is slid up and down, the debris accumulated on the debris receiving surface 83 enters the sliding surface of the main body case 1 with the shaving case 51, and the shaving case 51 cannot slide up and down smoothly. In addition, it is difficult to remove the shavings that have invaded in the meantime, which is unsanitary. The present invention focuses on such a point, and aims to prevent the shavings on the shaving receiving surface 83 from invading the sliding surface of the shaving case 51, and to facilitate the vertical sliding operation of the shaving case. To do.

[0004]

The electric shaver of the present invention has a main body case 1 having a motor 6 built therein, as shown in the illustrated example.
A razor receiving surface 83 is formed on the outer surface of the upper wall of the upper wall, and a razor unit 30 including a reciprocating vibration type inner blade 34 and an outer blade 32 driven by a motor 6 is provided on the trash receiving surface 83. A shaving case 51 having a comb blade unit 50 composed of a fixed comb blade 53 and a movable comb blade 54 is slidably mounted on an outer wall surface on one upper side of the main body case 1 for shaving. It is assumed that the movable comb blade 54 is configured to be driven by the motor 6 when the case 51 is slid to the upper use position. 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, the case 5
This is because even if the comb blade unit 50 is always in the protruding state, the comb blade unit 50 can be kept out of the way when the comb blade unit 50 is in the lowered position and not in use. In addition, in the present invention, a protruding wall 84 is provided at one end on the scraped surface 83 of the main body case 1 on the side of the shaving case 51 and continuous along the one end.

[0005]

[Action] When appropriate, the reciprocating vibration type inner blade 34 and outer blade 3
The projecting wall 84 can prevent the scraps that are cut by the cooperative action of 2 and accumulate on the scrap receiving surface 83 from entering the sliding surface of the main body case 1 with the shaving case 51.

[0006]

Therefore, according to the present invention, the lint receiving surface 8
A shaving case 51 that allows the upper 3 to freely slide up and down.
Since it is possible to prevent the intrusion to the side by the projecting wall 84, there is an advantage that the vertical sliding operation of the shaving case 51 can always be made smooth.

[0007]

FIG. 5 and FIG. 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, and 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, 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 with screws t. A motor mount 4 is attached to the upper part of the main body case 1. A double shaft type 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 and 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 vertically slidable, 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 projecting 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 on the outer peripheral surface at a constant circumferential pitch.
A rotor 17 having a numeral 6 is attached thereto, and a photo interrupter 19 attached to a substrate 18 faces the rotor 17. The photo interrupter 19 irradiates the rotor 17 with the light emitted from the light emitting diode, detects the reflected light with the photo transistor, 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. 2 and 4, the two-color light emitting diode 20 is attached to the substrate 8, and if the above-described rotation speed control is properly performed, the light emitting diode 20 emits green light, and the voltage of the battery 7 is to some extent. When the voltage drops, the light-emitting diode 20 emits red light to notify that speed control is impossible, and when the voltage drops further, the light-emitting diode 20 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 to the light emitting diode 20, and the front end of the lens 21 faces the back of the transparent panel 22 mounted on the upper part of the front case 1a. .. 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.

2 and 3, a reciprocating vibration type razor unit 30 is provided on the outer surface of the upper wall of the main body case 1. This razor unit 30 includes an outer blade holder 3
A large number of groups of inner blades 34 arranged in parallel in the inner blade holder 33 are configured to reciprocate left and right with respect to the inner surface of the mesh-shaped outer blade 32 supported by 1. Razor unit 3
0 is inclined to the front side with respect to the virtual perpendicular L of the main body case 1 at a predetermined angle θ. From the upper surface of the vibrator 35 mounted on the inner surface of the upper wall of the main body case 1, the supporting shaft 36 is projected forward from an opening in the center of the upper wall of the main body case 1 in a forward tilted position, and attached to the protruding end of the supporting shaft 36. The inner blade holder 33 is fitted and supported on the bracket 37. That bracket 3
Reference numeral 7 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, and a bracket supported by the sleeve 39. Due to the degree of freedom of 37, the group of inner blades 34 adheres to the inner surface of the outer blade 32 as a whole. The outer blade holder 31 is detachably locked and fixed by the projections 41 and 42 provided on both left and right sides of the body case 1. The protrusion 41 on the right side of the drawing is provided at the tip of an arm 43 that is erected 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 biased by a spring 44 so that it 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 engaged and fixed from the front and the rear in engaging recesses 47, 47 formed on the joining surfaces of the front and rear cases 1a and 1b, and the entire left and right legs 46 are deformed in a substantially parallel manner in the left and right directions. You can move. The vibrator 35 is linked to an upper eccentric pin 49 of a balancer 48 attached to the upper output shaft 5a of the motor 6, and is reciprocally driven left and right with a constant stroke as the motor 6 rotates.

1 and 13, the main body case 1
On the outer surface of the upper wall of the upper wall, there is formed a trash receiving surface 83 in which trash falling from the inner blade 34 is collected. On the rear end side of the lint receiving surface 83, a protruding wall 84 higher than the lint receiving surface 83 is formed continuously in the left-right direction along the rear end of the upper wall of the main body case 1 and enters the rear side surface side of the main body case 1. The front end side is formed to be open so that the dust can be swept out forward by the cleaning brush when the outer blade 32 is removed.
More specifically, most of the lint receiving surface 83 is formed on a horizontal plane orthogonal to the virtual perpendicular line L of the main body case 1, but the front end side 83a thereof is dropped one step lower, and then the support shaft 36 of the razor unit 30 tilted forward. Is formed on an inclined surface that is orthogonal to. Further, a concave groove 85 having a V-shaped cross section is formed on the rear side of the protruding wall 84 of the lint receiving surface 83, and this concave groove 85 is a portion for receiving the rear wall lower edge 31a of the outer blade holder 31. Also, when the outer blade holder 31 is removed, the dust that adheres to the inner surface of the holder 31 may fall into the concave groove 85, or the dust may leak between the outer blade holder 31 and the outer blade holder 31 when it is attached. The wall 85a of the concave groove 85 can prevent dust from entering the rear surface side of the main body case 1. As shown in FIG. 3, a rubber stopper plate 86 is closed between the opening in the center of the upper wall of the main body case 1 and the upper support shaft 36 of the vibrator 35.

On the rear surface side of the main body case 1, that is, on the upper rear side surface of the rear case 1b, a shaving case 51 equipped with a comb blade unit 50 is raised to the upper side of the main body case 1 and is pulled down. It is mounted so that it can slide up and down along with the position of use. In FIG. 7, 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 projecting from the left and right outer sides of the holder 52 are pin receiving recesses 5 formed on the left and right inner surfaces of the upper portion of the shaving case 51.
The comb blade unit 50 as a whole swings around the fulcrum pin 55 and can be retracted through an opening 57 formed in the upper rear surface of the shaving case 51.

In the same FIG. 7, engaging pieces 58, 58 with hooks are provided 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 is present so as to project forward. There is. The engaging pieces 58, 58 are vertically and 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, which are vertically long. 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 rear surfaces of the backing plate piece 60.
0a and 60a are engaged in the long holes 61 and 61 formed in the left and right of the rear case 1b in the vertical direction, respectively,
Protrusions 62.6 protruding left and right from the front of the shaving case 51
2 is engaged and connected. In the illustrated example, the protrusions 62 are fitted in the holes of the boss 60a, and the heads of the protrusions 62 are crushed and caulked as shown in FIG. 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 side of the motor mounting base 4, the motor mounting base 4 is mounted on the inner surface side of the rear case 1b so that it is connected to the rear part of the motor mounting base 4. Both ends 63 of the protruding piece 63, 63 provided
a. 63a is inserted into the slits 59, 59 at the respective inner portions of the hooked engagement pieces 58, 58 engaged with the slits 59, 59, whereby the engagement pieces 58, 58 are deformed inward. In other words, the protrusion 63
Both ends 63a and 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 that time, when the shaving case 51 is in the downward slide position, the free end 66b of the spring 66 is
When the shaving case 51 is in the upper slide position by pushing the wrinkling shaving case 51 downward with the downward restoring force of the shaving restoring force, the upward shaving case 51 is used to move 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 at the upper center of the movable comb blade 54 is formed is formed on the upper portion of the vibrator 69, and a bifurcated engaging protrusion 74 is provided on the central 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 in 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 engagement protrusion 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 engagement protrusion 74 in the left-right 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 creep deformation does not occur in the legs 70 of the vibrator 69 even when left for a long time. I chose In the non-use state, the engaging protrusion 74 is always located at 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 that is 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 movable up and down, 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 thereof, 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 swung to open 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 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.

FIG. 13 is a perspective view of the upper part of the main body case.

[Explanation of symbols]

 1 Main Body Case 6 Motor 30 Razor Unit 32 Outer Blade 34 Inner Blade 50 Comb Blade Unit 51 Shaving Case 53 Fixed Comb Blade 54 Movable Comb Blade 69 Transducer 83 Debris Receiving Surface 84 Projection Wall

Claims (1)

[Claims] 1. A repulsion vibration type inner blade 34 which is driven by a motor 6 is formed on the outer surface of an upper wall of a main body case 1 having a built-in motor 6 on the outer surface thereof. Outer blade 3
A shaving case 51 including a razor unit 30 composed of 2 and a comb blade unit 50 composed of a fixed comb blade 53 and a movable comb blade 54, and
Is mounted on the outer wall surface on one side of the upper part of the electric shaver so that the motor 6 drives the movable comb blade 54 when the shaving case 51 is slid to the upper use position. In the electric shaver, a protruding wall 84 is provided at one end on the scraped surface 83 of the main body case 1 on the side of the shaving case 51 and is continuous along the one end.