JPS61103473A - Reciprocal electric razor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention particularly relates to a reciprocating electric shaver having a built-in internal switch to prevent activation when not in use.

(Prior Art) A power switch in an electric shaver is usually arranged on the surface of an outer case. Therefore, if a battery-powered or battery-powered device is carried on a hanger or the like, there is a risk that the power switch may be accidentally turned on due to contact with other objects, causing unnecessary operation.

Therefore, in order to prevent such malfunctions, the power switch is equipped with a locking mechanism that locks when it is turned off, or the power switch is turned on by placing a cap on the blade.
There are some devices that adopt a switch structure that does not have L.

(Problems to be Solved by the Invention) However, such conventional electric shavers have the following problems. In other words, the structure of the power switch itself becomes complicated, leading to higher costs and poor assembly 1T1, and since some structure is added to the power switch itself, operations such as unlocking are undesirably inconvenient. Furthermore, it is difficult to say that the purpose has been fully achieved as it is not possible to completely eliminate the malfunction prevention function.

Therefore, the present invention eliminates the need for a cap on the blade by providing a storage structure for the blade in the electric shaver itself, eliminating the inconveniences associated with the presence of the cap, and also using the storage mechanism for the blade to close the internal switch. To provide a particularly reciprocating type electric shaver which is completely prevented from malfunctioning when the blade is arranged and stored, that is, when it is not in use, and is also easy to use and low in cost.

(Means and operations for solving the problems) In order to solve the above problems, the present invention is applied to a reciprocating electric shaver 1 as shown in FIG. The blade unit 3 is rotatably supported on the main body 6 and is configured to be able to hold the blade unit 3 in a use position and a non-use position. +1. A locking boss portion 4fa, 4fb, etc., which is elastically supported by lI, is provided on the other side of the blade unit 3, which rotates together with the blade unit 3, and a host portion 4fa, 4ft+ is provided on the engagement 1.
. . . is provided with a conductive gear portion 7.8 that engages with the connector 11-host portion 4fb, which is in the non-use position as shown in FIG.
The internal switch 7P, which is constructed by covering the trough 7a of the gear part 7 that engages with the gear 4rb with an insulating material 9, is connected to the power switch Q.
It is characterized in that it is connected in series with the blade unit 3, so that it is turned on at least when the blade unit 3 is in use, and turned off when it is not in use.

(Embodiments) Below, preferred embodiments of the present invention will be described with reference to the drawings.

First, the overall external configuration of the reciprocating electric shaver 1 will be described based on FIG. This figure is an external front view of the razor according to the present invention.

The razor 1 has a generally rectangular shape from the front and has a predetermined thickness. The main body 6 has a book on the outer shell.
A one-piece case 6a is provided. And the lower half is the main body base 11
On the right side of the front plate 12, which is a flat surface of the base 11, there is a power switch operation plate 13 in the shape of a right triangle in the front.
Allocate. This operation plate 13 has a similar shape that is slightly larger than the operation plate 13 formed on the front plate 12, and is housed in a recess 12a with the right-angled portion located on the right side so that the oblique sides can slide together, for example, the upper part is ON, lower side OFF. Incidentally, on the surface of the operation plate 13, anti-slip unevenness is formed, for example, at a substantially right angle to the oblique side. As a result, the operating plate 13 is placed on the trajectory of the user's thumb moving up and down while holding the razor 1 in his/her hand, and the operating plate 13 can be operated using the natural position and movement of the thumb.

In addition, a battery inlet/outlet cap 14 is provided on one side of the base 11.
A brush 15 is detachably provided on the other side (see FIG. 2).

On the other hand, on both sides of the base 11, a pair of left and right arm portions 16 and 17 are integrally formed that extend continuously upward in terms of design and face each other. A blade unit storage space S is formed (Fig. 2).

The other blade unit 3 has a size and shape selected to fill the storage space S as a whole, and includes a unit case 3a on its outer shell and an outer cutter frame 19 with a removable outer cutter 18 attached to the upper end of the unit case 3a. The centers of both measuring parts of this blade unit 3 are rotatably supported at substantially the center of the inner side of each arm part 16,17. A reciprocating type blade 2 is provided at the upper end of the blade unit 3, and a slender knob 20.21 is protruded from the front and rear surfaces of the blade unit 3 in the horizontal direction.
By pressing , the outer cutter frame 19 of the cutter portion 2 can be removed.

Note that the lower end portion 3b of the unit 3 is formed to have approximately the same shape as the blade portion 2, and preferably the upper and lower portions of the unit 3 are approximately symmetrical (see FIG. 10).

Next, the internal structure will be specifically explained with reference to FIGS. 1 to 7. FIG. 1 is an internal rear view of the reciprocating electric shaver according to the present invention, FIG. 2 is an internal rear view of the main body, FIG. 3 is a central longitudinal sectional side view of the razor (direction of arrow A in FIG. 1), 6 are side views of the lead plate and rotating contact plate, and FIG. 7 is an electrical system diagram of the razor.

First, the main body 6 side will be explained with reference to FIG. 2. The arm portions 16.17 are hollow inside, and lead plates 4f, 5f, 4r, . does not appear in Figure 2). This lead plate, for example 4f, is formed of a conductor, and as shown in FIG. 7, the intermediate portion of the elongated plate-like member has two locking boss portions 4 which are curved and bulged in a semicircle at predetermined positions. f
a.

4fb is formed, and the through hole 4 is used for attachment to the arm part.
fc, 4 fd are drilled. Note that the other lead plates 5f, 4r, . . . are formed in the same manner. Therefore, the reed plates 4f and 4r attached to one arm portion 16 are arranged as shown in the figure, and the respective boss portions are vertically opposed to each other in pairs. Note that the other arm portion 17 side is also configured in the same manner as the arm portion 16 side.

On the other hand, the base 11 has a hollow interior, and for example, in the embodiment, there is a battery storage section 2.0 that accommodates two AA batteries.
24 will be provided. Above this storage part 24, there is an opening L1 which stores the blade part 2 or the lower end part 3b of the blade part Uniso I.3.
A blade housing part 25 is formed in the shape of a recessed case, and is separated from the battery housing part 24 by 6 degrees.

Code 26.27L; l battery guide plate. Furthermore, a connecting plate 28 for holding one side of the battery and connecting it in series is fixed on the back surface of the cap 14, and a connecting plate 28 for holding the other side of the battery ( Fix the electrode terminal plate (not shown) on the upper side). Furthermore, the operation plate 13 is provided on the back surface of the front plate 12 of the case 6a.
A power switch Q is constructed by disposing a movable contact plate 29 that moves according to the power supply and a fixed contact plate 30 fixed to the back surface of the front plate 12. The base end of the contact plate 29 comes into sliding contact with the other (lower) electrode terminal plate 32 that holds the bent battery. The -1- side electrode terminal plate (not shown) is connected to the lead plate 4r in one arm part 16, and
The fixed contact plate 30 is connected to the lead plate 5f of the other arm portion 17 via a wiring board 33 to constitute an electrical system on the main body 6 side. In addition, the lead plate 4r, the electrode cloth 1 child plate, and the lead plate 5f.

It is desirable that the wiring board 33 and contact board 30 be formed integrally.

Next, the blade unit 3 side will be explained with reference to FIG. 1.

Support holes 40 and 41 are provided on both flat sides of the unit case 3a.
The holes 40 and 41 are selected so that they are located exactly in the center of the blade unit 3 with the outer cutter frame 13 attached. This hole 40.41 has a rotating contact plate 42.4 at its outer end.
4 are respectively fitted. One of the support shafts 43 and the rotary contact plate 42 is entirely made of a conductive material, and the inner end of the support shaft 43 is exposed inside the unit case 3a and serves as an introduction terminal 46. In addition, a fixing ring 47 having a relatively large diameter and having notches 47a and 47b formed on the circumference is integrally formed in the middle part of the support shaft 43 (see FIG. 4).
7 is fitted into a fitting recess provided in the support hole 40 of the case 3a, thereby fixing the support shaft 43 to the case 3a. The support shaft 43 is made to protrude outward from the unit case 3a by a predetermined length, and extends into the inside of the arm part 16 through a longitudinally long elongated hole 34 provided in the inner wall part of the arm part 16.
The rotary contact plate 42, which is integral with the support shaft 43 of the lead plate 4''
and 4r. The rotating contact plate 42 has a thickness substantially equal to the width of the lead plate, and forms the gear portion 7 consisting of wave-like peaks and troughs along the outer periphery. The outermost diameter of the rotating contact plate 42 is approximately the same as the distance between the lead plates 4f and 4f.
Or select it at a certain rate.

The relationship of each part in such a rotation support structure is as follows. The support shaft 43 is guided into the elongated hole 34 and
4 in the longitudinal direction of the arm portion 16, and its movement stroke is regulated. Note that the support shaft 43 is rotatable within the elongated hole 34. As a result, the blade unit 3
The blade portion 2 or the lower end portion 3b of the body 6 is inserted into the blade portion storage portion 25 of the main body 6.
It can be stored in or taken out from the blade, and in particular, the blade can be stored completely without exposing the blade, and it can be fixed.

In addition, although the support shaft 43 can be freely rotated at the intermediate position of the hole 34 (Fig. 5), it cannot be rotated freely at the two-wheel position (Fig. 6) or the lower end position (Fig. 4 or 7). The locking post portions 4 fa, 4 ra, and t; I: 4 b.

4rb acts as a clamping member 1 to restrict the rotation and movement of the rotating contact plate 42 and hold the blade unit 3 to the main body 6.

Therefore, the locking host portion 4 fa in each lead plate.

4 fb, 4 ra, and 4 rb are formed at such positions that the rotary contact plate 42 can be connected at the upper and lower end positions.

This rotational support structure is constructed in the same manner on the other side (arm 17 side) and is symmetrical. Note that a description of the same structure on the other side will be omitted.

Furthermore, when the blade unit 3 is not in use, with the blade 2 stored in the storage portion 25, the rotating contact plate 42 is positioned as shown in FIG. Therefore, in this state, the locking post portion 4
The valley part 7a of the gear part 7 in the rotating contact plate 42 where rb is engaged is covered with an insulating material 9 such as synthetic resin, and in this state, the lead plate 4r connected to the battery side and the rotating contact plate 42 are made non-conductive. state. On the other hand, from this state, the blade unit 3
is reversed, and the lower end 3b of the unit 3 is stored in the storage part 25 (7).In the state shown in FIG. 4 (in use), the tools 11 and 4r and the rotating contact plate 42 are in electrical continuity.

-) When the sled 1 is not in use, the power switch Q is turned ON, but the internal switch does not work.

(-1 city switch) P can be configured.

, since the second switch P uses the rotation mechanism as is, it is possible to reduce the number of parts and contribute to miniaturization with a low one-stroke switch.

Furthermore, when the blade unit 3 is pulled upward, the rotary contact plate 42 is moved to the position 11-. by the position boss 4fa, 4ra. can be held (same on the other side)
.

Therefore, in this state, the blade unit 3 is
, 8, the ridges of the rotating contact plates 42 and 44 go over the locking post portions 4fa of the elastically attached lead plates 4f and 5f, and the click type is activated. Rotate. In this case, each valley of the gear portion 9, 10 can be locked and held, and the blade unit 3 can be tilted at a plurality of predetermined angles with respect to the main body 6 (see FIG. 10). Note that the contact plate 42 in this state is as shown in FIG. 6,
The inner part switch P never turns OFF.

On the other hand, a shaft 6 is located at the lowest inside of the unit case 3a.
A drive motor 61 with 0 positioned in the left-right direction is built-in. The input terminals 62 and 63 of this drive motor 61 are connected to the connection plate 6.
4.65 to the lead-in terminal 46.45 of said support shaft 43.45.
50 respectively.

As a result, each of the rotating contact plates 42 and 44 becomes a positive and negative power supply terminal for the motor 61, respectively, and constitutes the electrical system of the three examples of blade units described above.

On the other hand, an eccentric circular cam 66 is fixed to the shaft 60, and a cylindrical driven ring 67 is rotatably attached to the outer periphery of the cam 66. A transmission lever 68 substantially perpendicular to the shaft 60 is integrally formed on the outer periphery of the driven ring 67, and this lever 68 extends upward and has a ball joint 6 at its upper end.
I via 9.

The tips of the horizontal lever part 71 of the shaped drive lever 70 are connected. The intermediate bent portion of the lever 70 is positioned above the motor 61 and is rotatably supported at the center position in the left-right direction of the blade unit 3 by a shaft pin 72 in the front-rear direction.
0 vertical lever portion 73 extends 111 upwardly.

The operating portion 74G forming the upper half of the vertical lever part 73 is formed in a cylindrical shape, and a groove 75 of a predetermined depth is formed at the upper end thereof passing through the center of the axis and penetrating in the front-rear direction.

On the other hand, 76 is an inner blade support, and in the center of this inner blade support 76 is a hole 77 into which the operating part 74 of the lever part 73 is loosely inserted.
form. This hole portion 77 is formed by providing a shaft portion 78 with a circular cross section in the front-rear direction passing through the center of a circular hole formed to have a large diameter so as to have a predetermined clearance with respect to the acting portion 74, thereby dividing the hole into two. . This shaft portion 78 enters into the split groove 75 when the acting portion 74 is inserted into the hole portion 77. Therefore,
In connection, the working part 74 is made to protrude in one direction from an opening 79 formed at the center of the upper surface of the unit case 3a, and is also made to face the hole 77 through the hole 77 of the support body 76, so that the upper end of the working part 74 An E-ring 80 for preventing removal may be fitted into a ring groove formed on the outer periphery. Note that a coil spring 82 through which the lever portion 73 is inserted is compressed between a spring receiving portion 81 formed protruding from the lower end of the lever portion 73 and the lower surface of the support body 76 . Note that the opening 79 is recessed downward from the upper surface of the surrounding unit case to form a separate housing part 83, and a ring groove 84 is provided in the open part 79, into which a stretchable separate housing receptacle 85 is inserted. Furthermore, inner blade support portions 88 and 89 are formed at both ends of the support body 76 by providing engaging protrusions 86 and 87 on the outer wall to make them stand upright.

On the other hand, the inner cutter 90 has a semi-cylindrical support base 91 with a hollow inside, and a large number of blades 92 . is engagement hole 9
It is made by drilling 3.94.

As a result, the inner walls of both end surfaces of the inner cutter 90 are connected to the support portion 88 of the support body.
．． The inner cutter 90 is supported by the support body 76 and can be attached or detached at will. Note that ribs 95 and 96 are provided on the lower surface of the support base 91 and abut against the surface of the support 76-L. Further, the inner cutter 90 is slidably in contact with the inner surface of the outer cutter 18 and is pressed against the inner surface of the outer cutter 18 by the elastic force of the coil spring 82.

! 11 With this configuration, the rotation of the motor 61 causes the cam 66 to rotate and the lever 68 to move the ball joint 69 up and down. This vertical movement causes the action portion 74 of the vertical lever portion 73 to reciprocate in the left-right direction via the drive lever 70. In this case, the acting part 74 performs an arcuate movement, but the shaft part 78 engages with the split groove 75 so that it can be freely displaced in the vertical direction, and the inner cutter 90 is urged with an appropriate pressing force. The motion of the blade 90 is converted to complete linear reciprocation. Such a drive transmission mechanism provides smooth operation, durability, and good assemblability.

On the other hand, the outer cutter 1B is attached and fixed to the outer cutter frame 19, but this outer cutter frame 19 is detachably attached to one end portion of the unit case 3a. The above-mentioned knobs 20 and 21 are made to protrude from inside to the outside of elongated holes 100 and 101 that allow movement in the front and back direction provided in the two parts of the front and rear surfaces of the unit case 3a. Spring 102 in two places,
103 biases each knob 20, 21 outward. On the inside of the knob 20.21, a stopper 104, which is a protrusion when pushed in and which also serves to restrict the position of the knobs 102 and 103, is integrally formed. Stopper portions 106 are integrally formed at two positions on the left and right, respectively, and have stopper portions 106 that stand upwardly and have locking claws 105 that extend outward at the upper ends.

The locking claws 105 are made to protrude to the outside of the unit case 3a through a through hole formed in the unit case 3a located above the elongated hole 100°101. On the other hand, on the inner wall of the outer cutter frame 19, each of the above-mentioned locking claws 105...
A locking protrusion 107 that locks with the locking protrusion 107 is integrally formed, so that when the outer cutter frame 19 is pushed upward into the upper end of the unit case 3a, the elastically supported locking pawl 105 is locked with the locking protrusion 107. ... can push over and get over, and the outer cutter frame 19 can be fixed to the unit case 3a. Moreover, when removing it, it is sufficient to push the knobs 20 and 21 to release the lock. By providing the knobs 20 and 21 in a relatively long and thin manner on the front and rear surfaces of the blade unit 3 in this way, it is possible to eliminate the protrusion to the side of the electric shaver, making it more compact, and also allows the blade unit 3 to be moved from the main body 6 in one direction. It can be used to prevent it from slipping when pulled out.

Next, the overall function of the reciprocating electric shaver according to the present invention will be explained with reference to FIGS. 8 to 11.

FIGS. 8, 9, and 11 are front views of the external appearance when the blade unit is positioned in an arbitrary position, and FIG. 10 is a side view of the same external appearance.

First, FIG. 8 shows the position of use. In this state, the blade unit 2 of the blade unit UNISO 1-3 is positioned at the upper end, and the lower end 3b is stored in the storage part 25 of the main body 6. In this usage position, the blade unit 3 is fixed to the main body 6. It is being done.

On the other hand, FIG. 9 shows a state in which the blade unit 3 is completely pulled out in the negative direction from the use position shown in FIG. 8, and the lower end portion 3b is taken out from the storage portion 25.

Even in this state, the blade unit 3 is fixed to the main body 6. In this position, the blade unit 3 rotates in a click manner as shown in FIG. 10, and the angle can be adjusted, and the blade unit 3 can be used even in this state.

On the other hand, in an intermediate position where the blade unit 3 is pulled out from the use position shown in FIG. 8 but does not reach the uppermost position, the blade unit 3 can freely and stably rotate 360 degrees. Therefore, in this position, the blade unit 3 is reversed from the angle of the usage position shown in FIG. When the blade part 2 is pushed into the 11th
As shown in the figure, it is stored and fixed in the storage section 25 and becomes a non-use position.

In the embodiment, the internal switch P is configured using the rotating mechanism of the blade unit 3 and the main body 6, and has a direct switch function, thereby simplifying the configuration and reducing costs. An internal switch structure may be constructed in which a knob of an internal switch is protruded from the portion 25 and the knob is turned off by pushing the knob on the blade 2 side of the blade unit 3 or the like.

Regarding other detailed configurations, shapes, etc., key points 1 of the present invention
Any modifications and variations that do not depart from the spirit are permitted within the scope of the present invention.

(First result of the invention) In this way, the reciprocating electric shaver according to the present invention rotatably supports the blade unit having the blade at one end on the main body,
The blade unit is configured to be able to be held in the use position and the non-use position, and an internal switch that is turned ON at least in the use position and OFF in the non-use position is connected in series with the power switch, thus achieving the following effects. .

■ Eliminates the need for a cap at all, and eliminates the inconveniences associated with the presence of a cap, such as losing or attaching a cap.

It eliminates the hassle of removal, provides sufficient protection for the blade, and is highly convenient and portable.

■ To obtain the above effect, an internal switch is placed to utilize the storage function of the blade, so automatic and complete malfunction prevention can be achieved when the blade is stored, that is, when it is not in use. Since the power switch does not require a guard or other additional structure, the ease of use can be greatly improved.

■ As shown in the example, the rotating mechanism of the blade unit and main body
By using one structure as it is as a switch, it is possible to achieve lower costs, smaller size, and improved ease of assembly.

[Brief explanation of drawings]

The drawings show embodiments of the present invention; FIG. 1 is an internal rear view of a reciprocating electric shaver according to the present invention, FIG. 2 is an internal rear view of the main body of the razor, and FIG. 3 is a central longitudinal cross-sectional side view of the razor. 4 to 6 are side views of the lead plate and rotating contact plate, FIG. 7 is an electrical system diagram of the razor, and FIG. Figures 9 and 11 are external front views of the same razor;
The figure is an external side view of the same razor. Surface diagram in blood, 2...Blade unit, 3...Blade unit,
3b..., lower end, 4 fa, 4 f
h, 4 ra. 4rb, 5fa, 5fb...locking post part,
6... Main body, 7, 8... Conductive gear part,
7a... Valley part, 9... Insulating material, P... Internal switch, Q... Power switch. Figure 3 Figure 4 Figure 5 Figure 6
Figure 10 Figure 7/,, 7- 11 [g

Claims (1)

[Claims] 1. A blade unit having a blade at one end is rotatably supported on the main body, and the blade unit is configured to be able to be held in a use position and a non-use position, and to be turned on at least in the use position. , a reciprocating electric shaver comprising an internal switch that is turned off in the non-use position and connected in series to a power switch. 2. The internal switch has a conductive locking boss portion elastically supported on the main body side, and a conductive gear portion on the other blade unit side that rotates together with the blade unit and engages with the locking boss portion. 2. The reciprocating electric shaver according to claim 1, wherein the valley portion of the gear portion that engages with the locking boss portion in the non-use position is covered with an insulating material. 3. The reciprocating electric shaver according to claim 1 or 2, wherein the main body has a built-in power supply unit such as a battery, and the blade unit has a built-in drive unit such as a motor. .