JPH0245085A - Shaver - Google Patents

Abstract

PURPOSE:To completely prevent the coming off of an engaging piece having a hook by providing a protruding piece in a line from a motor fitting base to be assembled to a body case and composing the title shaver so as to obstruct the deformation of the engaging piece inserted and engaged in a slit by this protruding piece in the engage ment releasing direction of the engaging piece. CONSTITUTION:Engaging pieces 58 and 58 respectively having the hooks are protruded and provided for both the right and left sides of the rather upper part of an edge shaving case 51 under a state in which the pieces 58 and 58 are directed forward. These engaging pieces 58 and 58 are inserted and engaged in slits 59 and 59 respective ly formed into vertically long shapes on the right and left of the rear of a rear case 1b. Both edge parts 63a and 63a of protruding pieces 63 and 63 continuously provided for the rear of a motor fitting base 4 are inserted into the slits 59 and 59 in the respec tive inside parts of the engaging pieces 58 and 58 respectively having the hooks engaged in the slits 59 and 59 by assembling the motor fitting base 4 to the inner side of the rear case 1b after assembling the edge shaving case 51 for which a unit 50 is previously assembled to the outside of one upper side of the rear case 1b, and the inward deformation of the engaging pieces 58 and 58, namely, the deformation toward the engagement releasing direction, can be obstructed by the both edge parts 63a and 63a of the protruding pieces 63 and 63 in this manner.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electric shaver equipped with a comb blade unit for edge shaving.

[Conventional technology]

As a general prior art technique for this type of electric shaver, a comb blade unit for shaving is arranged at a fixed position on the upper part of the outer surface of the main body case so as to be movable up and down.

When in use, the comb blade unit is raised and driven in an almost horizontal position outward from the main body case by pressing a button, and when not in use, the comb blade unit is tilted toward the main body case by pressing a button and left in a non-driving state. is well known.

In this well-known form, the comb blade unit moves up and down at a fixed position on the main body case, so when the comb blade unit is raised and used, the upper end of the main body case may touch the skin, and the comb blade unit may protrude. It is difficult to see the light and it is difficult to use.If you try to increase the amount of protrusion of the comb blade unit from the main body case to improve this problem, even when the comb blade unit is folded down when not in use, it will still protrude considerably. It is inconvenient to carry and store.

Therefore, the applicant of the present invention previously proposed an improvement plan to solve these problems in U.S. Pat. As shown in FIGS. 9 and 10, a shaving case 51 is attached to the upper outer surface of the main body case 1 so as to be slidable up and down, and a comb blade unit 50 is pivotally supported on the case 51 so as to be able to swing in and out. .

When in use, when the edge shaving case 51, which also serves as an operation button, is slid upward, 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 not in use, slide the edge shaving case 51 downward.
The comb blade unit 50 moves downward so as not to get in the way, falls down to the shaving case 51 side, and switches to a non-driving state.

There, as a means for attaching the edge shaving case 51 to the main body case 1 so as to be able to slide up and down, as shown in FIG.
A structure is adopted in which the left and right engaging pieces 58 with hooks protruding from the edge shaving case 51 are inserted into and engaged with each slit 59 formed on one side of the main body case 1 from the outside.

[Problem that the invention seeks to solve]

Assembly using such hooked engagement piece 58 has the advantage that it functions as a temporary fixing means when attaching edge shaving case 5I to main body case 1, making it easy to assemble 8. but.

Since the wide hook part is inserted into the slit 59 while the engaging piece 58 is elastically deformed, there is still room for the engaging piece 58 to be elastically deformed toward the disengaged side in the engaged state.

For this reason, if the edge shaving case 51 is assembled later and receives an unexpected external force, the retaining piece 58 may come off, and the position and orientation of the edge shaving case 5I may become unstable during the subsequent parts assembly process. I realized that it was also interfering with the assembly work.

There is room for

Of course, it is possible to separately apply a treatment to prevent the engagement piece 58 from coming off, but if this increases the number of parts and the assembly process, the use of the hook engagement means described above will be meaningless, and it is not a good idea. do not have.

The present invention focuses on this point and aims to easily prevent the hooked engagement piece 58 of the edge shaving case 51 from coming off without requiring the addition of special parts or assembly processes. purpose.

[Means for solving problems]

In the present invention, a sharp shaving case 51 equipped with a comb blade unit 50 consisting of a fixed comb blade 53 and a movable comb blade 54 is attached to the outside of one side of the upper part of a main body case l so as to be able to slide up and down. When the comb blade unit 51 is slid to the lower non-use position, the comb blade unit 50 is in a non-driving state, and when the edge shaving case 51 is slid to the upper use position, it is driven by the motor 6 built into the main body case 1. It is assumed that the vibrator 69 is an electric shaver configured to drive the movable comb blades 54 of the comb blade unit 50.

Here, the comb blade unit 50 may be fixed in advance to the edge shaving case 51 so as to protrude laterally and outwardly so as not to be able to swing. For example, when sliding the edge shaving case 51 up and down along the inclined outer surface of the main body case 1,
This is because even if the lottery blade unit 50 is always projected from the case 51, the unit 50 can be kept out of the way when it is in the lowered position and not in use.

In addition, in the present invention, as shown in FIG.
8 in the disengagement direction.

[Effect]

In such a case, the shaving case 51 is engaged and connected to the outside of one side of the upper part of the two-body case 1 via the slit 59 and the hooked engagement piece 58.

When the motor mounting base 4 is assembled into the main body case 1.

Subsequent detachment of the hooked engagement piece 58 is completely prevented.

〔Effect of the invention〕

Therefore, according to the present invention, by simply modifying the shape of the motor mounting base 4, which is a necessary part for motor assembly, it is possible to eliminate the need for adding special parts and increasing the assembly process.
There is an advantage that the hooked engagement piece of the edge shaving case 51 can be prevented from coming off for 5 days.

〔Example〕

FIGS. 5 and 6 show the overall external appearance of the electric shaver according to the present invention from the front and back, and FIGS. 1 to 4 show cross sections of the main parts thereof.

The main body case 1 of this electric shaver has a two-part structure consisting of a front case 1a and a rear case 1b.
After the front and rear cases 1a and 1b are butted together, the U-shaped decorative frame 2 is wrapped around the upper parts of the front and rear cases 1a and 1b, and both ends 2a and 2a of the decorative frame 2 are attached to the rear case 1b as shown in FIG. It engages into the engagement holes 3.3 formed in. The front and rear cases 1a and 1b are now temporarily attached. Thereafter, the two upper parts of the front and rear cases 1a and 1b are connected with screws t. A motor mounting base 4 is attached to the upper part of the main body case 1. The lower surface of this mounting base 4 has output shafts 5a and
A double-wheel type motor 6 equipped with a motor 5b is fixed with screws.

Inside the main body case 1, two rechargeable batteries 7, 7 are placed on both left and right sides of the motor 6, and nine circuit boards 8 are incorporated. A pair of charging plugs 9 are provided at the lower end of the main body case 1, and a display section 10, which is a light emitting diode (not shown) that lights up during charging, is provided at the lower front of the case.

In FIGS. 2 and 5, a decorative panel 11 is secured to the outside of the front surface of the front case 1a with caulking. A switch knob 12 facing the outside is provided at the right end of the panel 11, and a leg 12a is connected to the inside of the switch knob 12.
is the button-on/button-off switch 1 on the board 8.
Each time the knob 12 is pushed in, the switch 13 is turned on and off to start and stop the motor 5.

2 and 3, on the lower side of the switch knob 12, a lock plate 4 for the knob I2 is attached to the inner surface of the front case 1a so as to be able to slide up and down. A lock button 14a is exposed on the outside of the front of the case. When the lock button 14a is pressed down as shown in the figure, the switch knob 12 is allowed to be pressed, and when the lock button 14a is pushed up and the lock plate 14 is slid upward, a lock connected to the top of the lock plate 14 is inserted. Pieces 14b and 14b are switch button 1
2 to prevent the button 12 from being pressed. Arms 14c and 14 connected from the lower end of lock plate I4
The lock plate 14 is moderately held in the vertical sliding position by the elastic engagement between the pin 15 and the pin 15 protruding from the inner surface of the front case 1a.

In FIGS. 2 and 8, the lower output shaft 5 of the motor 5
A rotor 17 having black portions 16 attached at a constant pitch in the circumferential direction on its outer peripheral surface is attached to b, and a photo ink club 19 attached to a substrate 18 faces the rotor 17. The photo ink lamp 19 irradiates the rotor 17 with light emitted from a light emitting diode, and senses the reflected light with a phototransistor.

The motor rotation speed is detected by a pulsed detection signal taken out from the photo ink club 19. A control circuit that controls the voltage applied to the motor 5 based on this detection to maintain the motor rotational speed within a certain range is assembled on the substrates 8 and 18.

A two-color light emitting diode 20 is attached to the substrate 8, and when the rotational speed control described above is properly performed, the light emitting diode 20 emits green light, and when the voltage of the battery 7 drops to a certain extent, the light emitting diode 20 lights up red. It emits light to warn you that speed control is not possible, and when the voltage drops further, it stops emitting light to notify you that you need to charge it. As shown in FIG. 4, this light-emitting diode 20 is fitted with a plastic lens 21 which is flared at the front, and the front end of the lens 21 faces the back of a transparent panel 22 attached to the top of the front case 1a. There is. Inner odor surface a and peripheral outer surface b-c of lens 21
is formed on a textured surface or an uneven surface so that the light emitted from the diode 20 is diffusely reflected and widely diffused from the front surface of the lens 21.

In FIGS. 2 and 3, a reciprocating vibrating razor muff 1-30 is provided on the top of a two-body case l. This razor unit 30 is configured such that a large number of groups of inner cutters 34 arranged in parallel on an inner cutter holder 33 slide back and forth from side to side against the inner surface of a mesh-like outer cutter 32 supported by an outer cutter holder 31. It is something that

The inner blade holder 33 is fitted and supported by a bracket 37 attached to an upper support shaft 36 of a vibrator 35 attached to the upper end of the main body case 1. This bracket 37 is movable up and down with respect to the support shaft 36, and is supported by a sleeve 39, which is urged upward by a spring 38, through a fulcrum 4o to allow the bracket 37 to swing freely. Depending on the degree of rotation, the entire group of inner cutters 34 comes into close contact with the inner surface of the outer cutter 32.

The outer blade holder 31 is removably locked and fixed by projections 41 and 42 protruding from both left and right side surfaces of the main body case 1. The projection 41 on the right side of the figure is provided at the tip of an arm 43 that stands up from one end of the motor mounting base 4, and the projection 41 can be retracted by elastic deformation of the arm 43. The left protrusion 42 is urged to protrude by a spring 44 and can be manually moved in and out using a knob 45.

The vibrator 35 has thin legs 46 at both left and right ends. The upper ends of the legs 46 are engaged and fixed from the front and back into engagement recesses 47, 47 formed on the joining surfaces of the front and rear cases 1a, 1b, and the deformation of the left and right legs 46 causes the entire vibrator 35 to move approximately parallel to each other in the left and right direction. You can move to And this vibrator 35
is connected to an upper eccentric pin 49 of a balancer 48 attached to the upper output shaft 5a of the motor 5, and is reciprocated left and right with a constant stroke as the motor 5 rotates.

An edge shaving case 51 equipped with a comb blade unit 5° is attached to the upper outer surface of the rear case 1b so as to be slidable up and down between a use position where it is lifted upward of the main case 1 and a non-use position where it is pulled down.

In FIG. 7, the blade unit 50 includes a fixed comb blade 53 fixed to a holder 52, and a movable comb blade 54 that slides on the fixed comb blade 53 and is driven back and forth in the lateral direction. A fulcrum pin 55 protruding from both left and right outer sides of the holder 52
- The pin receivers 55 formed on the left and right sides of the upper inner surface of the edge shaving case 51 are engaged and supported by the recesses 56, 56, and the whole blade unit 50 swings around the fulcrum pin 55, and the edge shaving case 51 is rotated. It can go in and out through an opening 57 formed on the rear surface of the upper part.

In the same FIG. 7, the edge shaving case 51 has engaging pieces 58 with hooks protruding forward on both left and right sides near the top. These engaging pieces 58, 58 are connected to the rear case 1.
It is inserted into and engaged with slits 59 formed long in the vertical direction on the left and right sides of the rear surface of b. A backing plate piece 60 is arranged on the inner surface of the rear case 1b, and bosses 60a, 60a protruding from the left and right rear surfaces of the backing plate piece 60 form elongated holes 61, which are elongated in the vertical direction on the left and right sides of the rear case 1b, respectively. 61, and is engaged and connected to protrusions 62, 62 protruding from the front left and right sides of the edge shaving case 51. In the figure, each protrusion 62 fits into the hole of the post 60a, and the head of the protrusion 62 is crushed and caulked as shown in FIG. The shaft is supported by two guides at the top and bottom so that it can slide up and down.

1 and 8, after assembling the edge shaving case 51 with the comb blade unit 50 previously assembled on the outside of one side of the upper part of the rear case 1b, the motor mounting base 4 is attached to the rear case 1.
By assembling it on the inner surface side of b, both ends 63a, 63a of the protrusions 63, 63 connected to the rear of the motor mounting base 4.
The slits 59 and 5 are connected to each inner portion of the hooked retaining pieces 5 and 58 that are engaged with the slits 59 and 59.
9, thereby preventing inward deformation of the engaging pieces 58, 58, that is, deformation in the disengaging direction, by contacting both ends 63a, 63a of the protruding pieces 63, 63.

7 and 11, helical springs 66 are inserted into small holes 64 and 65 formed in the rear case 1b and the cover plate piece 60.
Both ends 66a and 66b of the two ends were engaged in an initial rolled deformed state. In such a case, when the edge shaving case 5I is in the downward slide position.

The downward component of the expanding restoring force of the free end 66b of the spring 66 pushes down the crease shaving case 51, and when the crease shaving case 51 is in the upward sliding position, the free end 6
Crease shaving case 51 with the upward force of the spreading restoring force of 6b
Push up and energize.

7 and 8, a cover plate 67 is fitted and connected to the upper front surface of the edge shaving case 51, and a movable comb of the comb blade unit 50 is disposed between the cover plate 67 and a vertical wall 68 in the opening 57. A plastic vibrator 69 for driving the blade 54 is incorporated. Vibrator 69
has thin legs 70, 70 on the left and right, and these legs 70, 7
The lower end portions 70a and 70a of the 0 are driven into the engagement holes 7e and 71 formed in the front surface of the vertical wall 68 and supported. At the top of the vibrator 69, there is an engaging piece 72 provided at the upper center of the movable comb blade 54.
An engagement recess 73 is formed into which the engagement recess 73 is engaged.

A bifurcated engagement protrusion 74 is provided on the central front surface of the vibrator 69,
The engaging protrusion 74 was made to protrude forward from a recess 75 formed at the lower center of the cover plate 67.

The engagement protrusion 74 enters into the main case through a through hole 76 formed at the center of the rear surface of the rear case 1b.

When the edge shaving case 51 is in the upward sliding position, it engages with a protrusion 77 provided on the rear end surface of the vibrator 35 in the razor unit 30.

The through hole 76 has an upper portion formed wide enough to allow the engaging protrusion 74 to move laterally, and a lower portion formed narrowly so as to guide and hold the engaging protrusion 76 in a central position for lateral movement. with this,
When the edge shaving case 51 is slid downward to the non-use position, the sensor 69 is held in a neutral position, so that creep deformation does not occur in the legs 70, 70 of the sensor 69 even if left for a long period of time. ing. Since the engaging protrusion 74 is always located at the center when not in use, it can be smoothly engaged with the protrusion 77 of the vibrator 35 on the main body case side during the first use.

Next, a structure for moving the comb blade unit 50 in and out will be explained.

In FIG. 7, < holder 5 in blade unit 50
2 is provided with a pivot pin 55 and an eccentric pivot hole 78, and an operating arm 80 is pivotally connected to this pivot hole 78 via a pin 79. The operating arm 80 is built into the case 51 so as to be movable up and down.
An operating piece 80a facing forward is connected to the lower end of the 0. This operation piece 80a is projected forward through the cover plate 67, and is inserted into one slit 5 provided in the rear case 1b.
It engages in the side slit part 81 connected to 9.

When the edge shaving case 51 is in the lower non-use position, the operating piece 80a of the operating arm 80 comes into contact with the lower end of the side slit portion 81 to restrict its position, as shown in FIG. The unit 50 is in a position stored inside the opening 57. on the other hand.

When the edge shaving case 51 is slid upward to the use position, the operating piece 80a is restricted from contacting the upper end of the side slit portion 81 during the upward movement, and by further moving the case 51 upward, Relatively operating arm 80
is pulled downward relative to case 51,
As a result, the comb blade unit 50 is swung up and swung around the fulcrum pin 55, and protrudes rearwardly and outwardly from the opening 57.

When the edge shaving case 51 is moved downward, the operating piece 80a first comes into contact with the lower end of the side slit portion 81 in the middle of the downward movement, and then the operating arm 80 is pushed upward relatively due to the downward movement of the case 51. .

The comb blade unit 50 is swung and retracted downward.

[Brief explanation of the drawing]

The drawings show an embodiment of the electric shaver according to the present invention, and FIG. 1 is a cross-sectional view taken along the line A-A in FIG. 3, FIG. 2 is a longitudinal side view, and FIG. 3 is a partially cutaway front view. FIG. 4 is a sectional view taken along line B-B in FIG. 3. FIG. 5 is an overall external view as seen from the front, FIG. 6 is an overall external view as seen from the rear, and FIGS. 7 and 8 are exploded perspective views of essential parts, respectively. FIGS. 9 and 10 are longitudinal sectional side views of essential parts for explaining the operation of the comb blade unit, with FIG. 9 showing the comb blade unit when not in use, and FIG. 10 showing the comb blade unit when in use. FIG. 11 is a front view showing the vertically sliding state of the edge shaving case. 1... Main body case. 4...Motor mounting base. 6...Motor. 50... Comb blade unit. 51... Kiwa shaving case. 53...Fixed comb blade. 54...Movable comb blade. 58...Engagement piece with hook. 59... slit. 63... protrusion. 63a: Part of the protrusion. 69... vibrator. Inventor: Name of Miyabetsu 4) Name 9' Product] 1

Claims (1)

[Claims] A edge shaving case 51 equipped with a comb blade unit 50 consisting of a fixed comb blade 53 and a movable comb blade 54 is attached to the outside of one side of the upper part of the main body case 1 so as to be slidable up and down. When the comb blade unit 50 is slid to the non-use position, the comb blade unit 50 is in a non-driving state, and when the edge shaving case 51 is slid to the upper use position, the vibrator 69 is driven by the motor 6 built into the main body case 1. In the electric shaver configured to drive the movable comb blades 54 of the comb blade unit 50, an engaging piece 58 with a hook protruding from the edge shaving case 51 is inserted into a slit 59 formed on one side of the upper part of the main body case 1. A portion 63a of the protruding piece 63 connected from the motor mounting base 4 assembled in the main body case 1 prevents the deformation of the engaging piece 58 that has engaged with the slit 59 in the disengagement direction. An electric razor configured to prevent this.