JPH0318912B2 - - Google Patents

Description

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

[Conventional technology]

As a general conventional technology for this type of electric shaver, a comb blade unit for shaving is placed in a fixed position on the upper part of the outer surface of the main body case so that it can swing up and down, and when in use, the comb blade unit can be moved up and down by pressing a button. It is well known to drive the comb blade unit by raising it laterally outward to a substantially horizontal position, and when not in use, by pressing a button, the comb blade unit is tilted toward the main body case to be in a non-driving state.

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 protruding tip of the comb blade unit may It's hard to see and difficult to use. If an attempt is made to increase the amount of protrusion of the comb blade unit from the main body case in order to improve this point, even when the comb blade unit is folded down when not in use, it will continue to protrude considerably, making it inconvenient for shape and storage. .

Therefore, the present applicant previously proposed an improvement plan to solve these problems in Utility Application No. 189242/1983. 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. and,
Edge shaving case 5 that doubles as an operation button when in use
When the comb blade unit 1 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, and in this state, the comb blade unit 50 becomes driveable. When the edge 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 down to the edge shaving case 51 side, and is switched to a non-driving state.

There, we will introduce the edge shaving case 51 and the main case 1.
As a means of attaching it so that it can slide up and down,
As shown in the figure, a structure is adopted in which 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 hook-equipped engaging pieces 58 has the advantage of facilitating assembly because it functions as a temporary fixing means when attaching the edge shaving case 51 to the main body case 1. but,
Since the wide hook portion 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 disengagement side in the engaged state.

For this reason, if an unexpected external force is applied after the edge shaving case 51 is assembled, the engagement piece 58 may come off, and the position and orientation of the edge shaving case 51 will become unstable during the subsequent parts assembly process. I noticed that this also caused problems with the assembly work.

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 above-mentioned hook engagement means will be useless, and this is not a good idea. isn't it.

The present invention has focused on this point and aims to easily prevent the engaging piece 58 with a hook 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 the main case 1 so as to be able to slide up and down. When the comb blade unit 51 is slid to the lower non-melting 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 in a manner that it projects laterally and outwardly so as not to be able to swing. For example, edge shaving case 5
1 is slid up and down along the inclined outer surface of the main body case 1, even if the comb blade unit 50 is always protruding from the case 51, the unit 50 may get in the way when not in use when it is in the lowered position. This is because you can prevent it from happening.

In addition, in the present invention, as shown in FIG. The contact prevents deformation in the release direction.

[Effect]

In such a case, after engaging and connecting the shaving case 51 to the outside of one side of the upper part of the main body case 1 via the slit 59 and the engaging piece 58 with a hook,
When the motor receiving stand 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 achieve extremely high performance without adding any special parts or increasing the assembly process. There is an advantage that the engaging piece 58 with hook of the shaving case 51 can be prevented from coming off.

〔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, a U-shaped decorative frame 2 is attached to the front and rear cases 1b.
As shown in FIG.
It engages into the engagement holes 3, 3 formed in b. 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. A double-shaft motor 6 with upper and lower output shafts 5a and 5b is mounted on the lower surface of the mounting base 4.
is fixed with screws.

Inside the main body case 1 are two rechargeable batteries 7, 7.
are placed on both the left and right sides of the motor 6, and a circuit board 8 is incorporated therein. A pair of charging plugs 9, 9 are provided at the lower end of the main body case 1, and a display section 10 of 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 fixed to the outside of the front surface of the front case 1a by caulking. A switch knob 12 facing the outside is provided at the right end of this panel 11.
The leg 12a connected inside the switch 2 is the operating piece 1 of the push-on/push-off switch 13 on the board 8.
3a, and each time the knob 12 is pushed in, the switch 13 is turned on and off to start and stop the motor 5.

In FIGS. 2 and 3, switch knob 1
2 has a locking 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 to the lock plate 14 projects to the outside of the front surface of the case. When the lock button 4a is pressed down as shown in the figure, the switch knob 12 is allowed to be pushed in, and the lock button 14a is pushed up to lock the lock plate 1.
When the switch 4 is slid upward, the lock pieces 14b, 14b connected to the upper part of the lock plate 14 engage with a part of the switch button 12, thereby preventing the button 12 from being pushed in at this time. The lock plate 14 is held in the vertical sliding position by elastic engagement between arms 14c, 14c connected from the lower end of the lock plate 14 and a pin 15 protruding from the inner surface of the front case 1a.

In FIGS. 2 and 8, a rotor 17 is attached to the lower output shaft 5b of the motor 5, and the rotor 17 has black portions 16 attached at a constant pitch in the circumferential direction on the outer circumferential surface, and a photo interrupter 19 attached to a substrate 18 is attached to the rotor. It is facing 17. photointerapura 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 interrupter 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 mounted on the substrates 8 and 18.

A two-color light emitting diode 20 is attached to the substrate 8, and when the rotation 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 2
0 will emit a red light to warn you that speed control is not possible, and when the voltage drops further, the light will stop emitting light to notify you of the need for charging. As shown in FIG. 4, this light-emitting diode 20 is fitted with a plastic lens 21 which is flared in the front.The lens 21 is attached to the back of a transparent panel 22 attached to the upper part of the front case 1a.
The front end of is facing. The inner inner surface a and the peripheral outer surfaces b and c of the lens 21 are formed to have textured surfaces, uneven surfaces, etc., so that the light emitted from the diode 20 is diffusely reflected and widely diffused from the front surface of the lens 21.

2 and 3, a reciprocating vibration type razor unit 30 is provided on the upper part of the main body case 1. This razor unit 30 has a large number of inner cutters 34 arranged in parallel on an inner cutter holder 33, on the inner surface of a mesh-like outer cutter 32 supported on an outer cutter holder 31.
The group is configured to slide back and forth from side to side.

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 via a fulcrum 40 on a sleeve 39 which is biased upward by a spring 38 so as to be swingable in the balance.
The degree of freedom of the bracket 37 supported by the inner cutter 3
The entire fourth group is in close contact with the inner surface of the outer cutter 32.

The outer blade holder 31 is removably locked and fixed by protrusions 41 and 42 protruding from both left and right side surfaces of the main body case 1. The protrusion 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 protrusion 41 can be retracted by elastic deformation of the arm 43. The protrusion 42 on the left side is the spring 4
The knob 45, which is biased to protrude at 4, can be manually operated to move in and out.

Thin legs 4 are provided at both left and right ends of the vibrator 35.
It has 6,46. The upper end of this leg 46 is connected to an engagement recess 4 formed on the joint surface of the front and rear cases 1a, 1b.
7, 47 from the front and back, and the left and right legs 46
With this deformation, the entire vibrator 35 can be moved approximately parallel to the left and right. The 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.

A comb blade unit 50 is provided on the upper outer surface of the rear case 1b.
An edge shaving case 51 is attached to the main body case 1 so as to be slidable up and down between a use position where it is lifted upward and a non-use position when it is pulled down.

In FIG. 7, the comb blade unit 50 includes a 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. The fulcrum pins 55, 55 protruding from the left and right outer sides of the holder 52 form pin receiving recesses 5 formed on the left and right sides of the upper inner surface of the shaving case 51.
6 and 56, the comb blade unit 50 as a whole swings around a fulcrum pin 55, and can be moved in and out of an opening 57 formed in the upper rear surface of the edge shaving case 51.

In the same FIG. 7, the edge shaving case 51 has engaging pieces 58, 5 with hooks on both left and right sides near the top.
8 is provided protruding toward the front. This engagement piece 5
8 and 58 are inserted into and engaged with slits 59 and 59 formed vertically long on the left and right sides of the rear surface of the rear case 1b, respectively. A backing plate piece 60 is disposed 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 the edge shaving case 51
It is engaged and connected to protrusions 62, 62 protruding from the left and right sides of the entire surface. In the figure, each protrusion 62 fits into the hole of the boss 60a, and the head of the protrusion 62 is crushed and caulked as shown in FIG. It is supported so that it can freely slide up and down and not come off by means of two guides at the top and bottom.

1 and 8, after assembling the edge shaving case 51 with the outer comb blade unit 50 previously assembled on one side of the upper part of the rear case 1b, the motor mounting base 4 is assembled on the inner surface of the rear case 1b. In some cases, a protrusion 6 connected to the rear of the motor mounting base 4 may be used.
Both ends 63a, 63a of 3, 63 are inserted into the slit 5.
The engaging piece 5 with the hook engaged with 9, 59
Slits 59, 5 in each inner part of 8, 58
9, thereby preventing the deformation of the engaging pieces 58, 58 inward, that is, the deformation in the direction of disengaging the protruding pieces 6.
The contact was prevented at both ends 63a, 63a of No. 3, 63.

In FIGS. 7 and 11, rear case 1b
Both ends 66a, 66b of the helical spring 66 were engaged in the small holes 64, 65 formed in the backing plate piece 60 in the initial rolled-up deformed state. At this time, when the edge shaving case 51 is in the downward sliding position, the downward force of the spreading restoring force of the free end 66b of the spring 66 presses down the edge shaving case 51, and the edge shaving case 51 is in the upward sliding position. , the upward component of the restoring force of the free end 66b pushes up the shaving case 51.

7 and 8, a cover plate 67 is fitted and connected to the entire upper surface of the edge shaving case 51, and a movable comb of the comb blade unit 50 is connected 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. The vibrator 69 has thin legs 70, 70 on the left and right sides, and the lower ends 70a, 70a of the legs 70, 70 are driven into engagement holes 71, 71 formed in the entire surface of the vertical wall 68 and supported. An engagement recess 73 is formed in the upper part of the vibrator 69, into which an engagement piece 72 provided at the upper center of the movable comb blade 54 engages.
A bifurcated engagement protrusion 74 is provided on the front center of the vibrator 69, and the engagement protrusion 74 is made to protrude forward from a recess formed in the lower center of the cover plate 67.

The engagement protrusion 74 protrudes 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, the vibrator 3 in the razor unit 30
It engages with a protrusion 77 provided on the rear end surface of 5.

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 vibrator 69 is maintained in a neutral position, and the legs 70, 70 of the vibrator 69 are prevented from creep deformation even if left for a long period of time. It's getting old. 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 next use.

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

In FIG. 7, one leg of the holder 52 of the comb blade unit 50 is provided with a pivot hole 78 that is eccentric to the pivot pin 55, and the operating arm 80 is pivoted to this pivot hole 78 via a pin 79. connected. The operating arm 80 is built into the case 51 so as to be vertically movable, and an operating piece 80a facing forward is connected to the lower end of the operating arm 80. This operating piece 80a is projected forward through the cover plate 67 and is engaged in a side slit portion 81 connected to one of the slits 59 provided in the rear case 1.

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. 50
is 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 80 is restrained from contacting the upper end of the side slit portion 81 during the upward movement, and by further moving the case 51 upward,
When the operating arm 80 is pulled down relative to the case 51, 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 operation piece 80a first moves into the side slit portion 8.
1, and as the case 51 moves downward, the operating arm 80 is relatively thrust upward, and the comb blade unit 50 is swung downward and retracted.

[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. Figure 4 is a sectional view taken along line B-B in Figure 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. Figure 9 and 1
Figure 0 is a longitudinal cross-sectional side view of the main part to explain the operation of the comb blade unit, and Figure 9 shows it when not in use.
The figures show the respective states 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...Edge shaving case, 53...Fixed comb blade, 54...Movable comb blade, 58...Engaging piece with hook, 59...
Slit, 63... protruding piece, 63a... part of protruding piece, 69... vibrator.

Claims (1)

[Claims] 1 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 able to slide up and down.
When the comb blade unit 50 is slid to the lower non-use position, the comb blade unit 50 is in a non-driven 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. In an electric shaver configured such that the vibrator 69 drives 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 has a slit 59 formed on one side of the upper part of the main body case 1. Insert and engage the main case 1.
A portion 63a of the protruding piece 63 connected from the motor mounting base 4 assembled in the motor mount 4 is configured to contact and prevent the engaging piece 58 engaged with the slit 59 from deforming in the disengagement direction. An electric razor characterized by: