JPH0133194B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention particularly relates to a blade housing structure in a reciprocating electric shaver.

(Prior Art) Since the blade of an electric shaver is functionally provided at the tip of the main body, the blade is usually covered with a cap having approximately the same shape as the cap to protect the blade. This cap is generally made of a synthetic resin material or the like, and when it is placed on the blade, it is elastically locked on the side of the main body and is detachable.

(Problems to be Solved by the Invention) However, such conventional electric shavers have many problems as follows.

First, since the cap is required to be separate from the main body, it is easy to lose the cap, and it is also easy to cause damage such as cracking.

Second, if you carry it in a bag, etc., the cap may come off from the main body and damage the blade, and the blade cannot be adequately protected, and furthermore, the blade may damage other objects nearby. There is a risk of being exposed.

Thirdly, it is troublesome to put on and take off the cap, and especially when the cap is used in a car or the like when going out, there is an inconvenience such as there is no place to put the cap and the cap must be carried by hand.

Therefore, the present invention completely eliminates the need for such a cap, eliminates the above-mentioned inconveniences associated with the existence of a cap, and provides sufficient protection for the blade etc., as well as a reciprocating type electric knife, which is extremely convenient and portable. It provides razors.

(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. This includes a blade unit 3 having a blade 2 at one end, and a pair of left and right arms 4 facing each other, for example.
5 (see Fig. 2), and both sides of the blade unit 3 are rotatably supported inside the arm portions 4, 5 so as to be movable by a predetermined stroke, and can be moved arbitrarily to at least a use position and a non-use position. It is characterized by a main body 6 having a storage recess 7 for holding the blade part 2 of the blade part unit 3 which has been rotated and displaced from the use position and storing it in the non-use position.

(Embodiments) Preferred embodiments of the present invention will be described below 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,
It is formed to have a predetermined thickness. The main body 6 includes a main body case 6a on its outer shell. The lower half is a main body base 8, and a power switch operation plate 9 having a right-angled triangular shape when viewed from the front is arranged on the right side of a front plate 6b forming a flat surface of the base 8. This operation plate 9 has a similar shape that is slightly larger than this operation plate 9 formed on the front plate 6b, and is housed in a recess 6c with the right angle portion located at the upper right so that the oblique sides can slide together.For example, the upper part is turned on, The lower part is OFF. Incidentally, on the surface of the operation plate 9, anti-slip irregularities are formed, for example, at a substantially right angle to the oblique side. As a result, the operating plate 9 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 9 can be operated using the natural position and movement of the thumb.

Further, a battery inlet/outlet cap 10 is provided on one side of the base 8, and a detachable brush 11 is provided on the other side (see FIG. 2).

On the other hand, a pair of left and right arm parts 4 and 5 are integrally formed on both sides of the base part 8 and extend continuously upward in terms of design, and a front rectangular blade is surrounded by the arm parts 4 and 5 and the base part 8. A 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 13 with a removable outer cutter 12 attached to the upper end of the unit case 3a. The center of both sides of the blade unit 3 is rotatably supported at substantially the center of the inner side of each arm 4, 5. A reciprocating type blade part 2 is provided at the upper end of the blade unit 3, and elongated knobs 15, 16 are protruded from the front and rear surfaces of the blade unit 3 in the horizontal direction.
By pressing 6, the outer cutter frame 13 of the blade portion 2 can be removed. Note that the lower end 3b of the unit 3 is connected to the blade 2.
It is desirable that 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), 7 to 7 are side views of the lead plate and the rotating contact plate.

First, the main body 6 side will be explained with reference to FIG. 2. The arm parts 4, 5 are hollow inside, and lead plates 20, 21 are attached to the inner walls of the front and rear surfaces of each arm part 4, 5 so as to face each other along the longitudinal direction (opposite sides are shown in FIG. 2). ). This lead plate, for example 20, is formed of a conductor, and as shown in FIG. 4, locking boss portions 20a and 20b are formed in two predetermined positions in the middle of the elongated plate-like member, and are curved and bulged in a semicircular shape. Through-holes 20c, 2 for attachment to the arm part
It is made by drilling 0d. In addition, other lead plates 21...
is formed in the same way. Therefore, the lead plates 20 and 23 in one arm portion 4 are arranged as shown in FIG. 4, and the respective bosses are vertically opposed to each other. In addition,
The other arm portion 5 side is also configured in the same manner as the arm portion 4 side.

On the other hand, the base 8 has a hollow interior, and for example, in the embodiment, there is a battery storage section 24 that accommodates two AA batteries.
will be established. A blade housing recess 7 in the shape of a concave case opening upward is formed above the housing 24 to house the blade 2 or the lower end 3b of the blade unit 3, and is partitioned off from the battery housing 24.

Reference numerals 26 and 27 are battery guide plates. Also,
A connecting plate 28 for holding one side of the batteries and connecting them in series is fixed on the back surface of the cap 10, and a connecting plate 28 for holding the other side of the batteries (upper side) is fixed on the back plate of the main body case 6a, which is not shown in the figure. An electrode terminal plate (not shown) is fixedly installed. Furthermore, a movable contact plate 29 that is moved by the operation plate 9 and a fixed contact plate 30 fixed to the back surface of the front plate 6b are arranged on the back surface of the front plate 6b of the case 6a to constitute a power switch 31. 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 upper electrode terminal plate (not shown) is the lead plate 2 of one arm portion 4.
3, and the fixed contact plate 30 is connected to the lead plate 21 on the other arm part 5 via a wiring board 33, thereby configuring an electrical system on the main body 6 side. Note that it is desirable that the lead plate 23, the electrode terminal plate, the lead plate 21, the wiring board 33, and the contact plate 30 be formed integrally.

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

Support holes 4 are provided on both flat sides of the unit case 3a.
0 and 41, and these holes 40 and 41 are selected so that they will later become the middle part of the blade unit 3 with the outer cutter frame 13 attached. These holes 40 and 41 have a support shaft 4 provided with rotating contact plates 42 and 44 at the outer ends.
3 and 45, respectively. This one support shaft 43 and the rotating contact plate 42 are entirely made of a conductor, and the support shaft 43
The inner end is exposed to the inside of the unit case 3a,
Connect the introduction terminal 46. Further, 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), and this ring 47 is connected to the support hole 47 of the case 3a.
By fitting into the fitting recess provided in the support shaft 4
3 to the case 3a. The support shaft 43 projects outward from the unit case 3a by a predetermined length, and is inserted into a longitudinally long elongated hole 3 provided in the inner wall of the arm portion 4.
The rotating contact plate 42, which is integral with the support shaft 43, is interposed between the lead plates 20 and 23. Rotating contact plate 42
is a gear having approximately the same thickness as the width of the lead plate 20 and consisting of wavy peaks and troughs along the outer periphery.
The outermost diameter of this rotating contact plate 42 is the same as that of the lead plates 20 and 2.
The distance between 3 and 3 should be approximately the same, or slightly smaller.

The relationship of each part in such a rotation support structure is as follows. The support shaft 43 is guided in the elongated hole 34 and can move in the longitudinal direction of the arm portion 4 along the elongated hole 34, and its movement stroke is regulated. Note that the support shaft 43 is rotatable within the elongated hole 34. Thereby, the blade portion 2 or lower end portion 3b of the blade unit 3 can be stored in or taken out from the blade storage recess 7 of the main body 6. In addition, the support shaft 43
can rotate freely at the intermediate position of the elongated hole 34 (Fig. 5), but at the upper end position (Fig. 7) or lower end position (Fig. 4 or 6), the rotating contact plate 42
The locking boss portions 20a, 23a or 20b, 23b of each lead plate 20, 23 are clamped and locked in the valley of the gear to restrict the rotation and movement of the rotary contact plate 42, and the blade unit 3 is fixed to the main body. Hold at 6. Therefore, in each lead plate, the locking boss portions 20a,
The formation positions of 20b, 23a, and 23b are selected so that the rotating contact plate 42 can be locked at the upper and lower end positions.

This rotation support structure is constructed in the same manner on the other side (arm 5 side) and is symmetrical. In addition,
A description of the same structure on the other side will be omitted.

Further, in the non-use position where the blade part 2 of the blade part unit 3 is stored in the storage recess 7, the rotating contact plate 42 is positioned as shown in FIG. Therefore, in this state, the valley portion 42a of the gear in the rotary contact plate 42 that is locked by the locking boss portion 23b is covered with an insulating material 48 such as synthetic resin, and in this state, the lead plate 23 connected to the battery side is covered with an insulating material 48 such as synthetic resin. and brings the rotating contact plate 42 into a non-conducting state. On the other hand, from this state, the blade unit 3
When the unit 3 is inverted and the lower end 3b of the unit 3 is housed in the housing section 7 in the state shown in FIG. 4 (in use), the lead plate 23 and the rotating contact plate 42 are in a conductive state. That is, when the electric shaver 1 is not in use, an internal switch (double switch) 49 can be configured that does not operate even if the power switch 31 is turned on. Since the switch 49 uses the rotation mechanism as is, the number of parts can be reduced, contributing to lower costs and miniaturization.

Furthermore, when the blade unit 3 is pulled out upward, the rotating contact plate 42 is secured to the locking boss portions 20a, 23a.
(The same applies to the other side). Therefore, in this state, if the blade unit 3 is rotated around the support shafts 43, 45, the locking bosses 20a of the elastically attached lead plates 20, 21 will be moved to the rotating contact plate 42. , 44 climbs over and rotates in a click-like manner. in this case,
Each trough of the gear can be locked and held, and the angle of the blade unit 3 can be adjusted to tilt at a predetermined angle with respect to the main body 6 (see FIG. 10). Note that the contact plate 42 in this state is as shown in FIG.
Internal switch 49 is never turned off.

On the other hand, a drive motor 6 with a shaft 60 positioned in the left-right direction is located at the lowest inside of the unit case 3a.
1 is built in. Input terminals 62 and 63 of this drive motor 61 are connected to lead-in terminals 46 and 50 of the support shafts 43 and 45 via connection plates 64 and 65, respectively. As a result, each rotating contact plate 42, 44 serves as a positive and negative power terminal for the motor 61, respectively, and constitutes an electrical system on the blade unit 3 side.

On the other hand, the shaft 60 has an eccentric circular cam 66.
A cylindrical driven ring 67 is rotatably attached to the outer periphery of this cam 66, which is pivoted. A transmission lever 68 that is 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 connects the horizontal lever portion of the L-shaped drive lever 70 to the upper end via a ball joint 69. Connect the tips of 71. The intermediate bent portion of the lever 70 is located above the motor 61 and is rotatably supported at the center position in the left-right direction of the blade unit 3 by a longitudinal axis pin 72.
3 extends upward.

Action portion 74 forming the upper half of the vertical lever portion 73
is formed into a cylindrical shape, and a split 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, reference numeral 76 denotes an inner blade support, and a hole 77 is formed in the center of the inner blade support 76, into which the operating portion 74 of the lever portion 73 is loosely inserted. 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 connects the acting portion 74 to the hole 7.
7, it enters into the split groove 75. Therefore, the connection is made between the operating portion 74 and the unit case 3a.
A ring groove that protrudes upward from an opening 79 formed at the center of the upper surface, faces above the hole 77 through the hole 77 of the support 76, and is formed on the outer periphery of the upper end of the operating portion 74 has a ring groove for preventing slippage. E-ring 8
Just insert 0. 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 6. The opening 79 is recessed downward from the upper surface of the surrounding unit case to form a shear clip 83, and a ring groove 84 is provided in the opening 79, into which a stretchable shear receiver 85 is inserted. Inner blade supports 88 and 89 are provided with engagement protrusions 86 and 87 on the outer wall at both ends of the support body 76 and are made to stand up.
form.

On the other hand, the inner part 90 is formed by a support base 91 having a semi-cylindrical shape with a hollow inside, and a large number of blades 92 . It is formed by drilling matching holes 93 and 94. As a result, the inner walls of both end surfaces of the inner cutter 90 are connected to the support portion 8 of the support body.
8, 89 and each hole 9.
3, 94 and the protrusions 86, 87 are engaged, and the inner cutter 9
0 is supported by the support body 76 and is detachable. Note that ribs 95, 96 are provided on the lower surface of the support base 91.
is provided and abuts on the upper surface of the support body 76. In addition, the inner blade 9
0 slidably contacts the inner surface of the outer cutter 12 and is pressed by the elastic force of the coil spring 82.

With this configuration, the rotation of the motor 61 is controlled by the cam 6.
6 is rotated, and the lever 68 moves 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 motion, but the shaft part 78 engages with the split groove 75 so as to be freely displaceable in the vertical direction, and the inner cutter 90 is urged with a moderate pressure contact force, so that the inner cutter 90 is transformed into a complete linear reciprocating motion. Such a drive force transmission mechanism provides smooth operation, durability, and good assemblability.

On the other hand, the outer cutter 12 is attached and fixed to an outer cutter frame 13, but this outer cutter frame 13 is detachably attached to the upper end portion of the unit case 3a. The aforementioned knobs 15 and 16
The knobs protrude from inside to the outside of elongated holes 100 and 101 that are provided at the upper part of the front and rear surfaces of the unit case 3a to allow movement in the front and back direction, and springs 102 and 103 are installed at two places on the left and right between each knob 15 and 16. The compression forces the respective knobs 15 and 16 outward. On the inside of the knobs 15, 16, there are integrally formed stoppers 104 which are protrusions when pushed in and also serve to restrict the positions of the springs 102, 103.
Further, the knobs 15 and 16 located inside the unit case 3a are provided with upwardly extending knobs at two positions on the left and right sides, respectively.
In addition, a stopper portion 106 having outward locking claws 105 is integrally formed at the upper end. This locking claw 10
5 are made to protrude to the outside of the unit case 3a through through holes formed in the unit case 3a located above the elongated holes 100, 107. On the other hand, each of the locking claws 10 is provided on the inner wall of the outer cutter frame 13 when installed.
A locking protrusion 107 that locks with 5 is integrally formed,
As a result, when the outer cutter frame 13 is pushed into the upper end of the unit case 3a from above, the locking protrusions 106 push over the elastically supported locking claws 105, and
The outer cutter frame 13 can be fixed to the unit case 3a.
Moreover, when removing it, the lock can be released by pushing the knobs 15 and 16. Like this, knobs 15 and 16
By providing relatively long and narrow parts on the front and rear surfaces of the blade unit 3, it is possible to eliminate the protrusion to the side of the electric shaver, thereby making it more compact, and also to function as a slip preventer when the blade unit 3 is pulled upward from the main body 6. obtain.

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

Figures 8, 9, and 11 are external front views of the blade unit in any position;
The figure is a side view of the same external appearance.

First, FIG. 8 shows the position of use. In this state, the blade 2 of the blade unit 3 is located at the upper end, and the lower end 3b is stored in the storage recess 7 of the main body 6. In this use position, the blade unit 3 is held by the main body 6. There is.

On the other hand, FIG. 9 shows a state in which the blade unit 3 is completely pulled out upward from the use position shown in FIG. 8, and the lower end portion 3b is taken out from the storage recess 7.
Even in this state, the blade unit 3 is held by the main body 6. In this position, the blade unit 3 rotates in a click-like 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 use position shown in FIG. When the blade part 2 is pushed downward, the blade part 2 is stored and fixed in the storage recess 7 as shown in FIG. 11, and becomes the non-use position.

It should be noted that the present invention is not limited to the embodiments, and arbitrary changes in the detailed structure and shape etc. are permitted within the scope of the present invention without departing from the gist of the present invention.

(Effects of the Invention) As described above, the reciprocating electric shaver according to the present invention includes a blade unit having a blade at one end, and a main body that supports the blade unit so as to be rotatable and displaceable by a predetermined stroke. At least the blade unit is configured so that it can be rotated from the operating position and this position, and can be displaced and held at any time in the non-using position where the blade is stored in the storage recess of the main body, so it has the following significant effects. get.

Since there is no need for a conventional cap that covers the blade, loss or damage to the cap can be avoided, and the trouble of removing and attaching the cap can be eliminated.

It is easy to handle and convenient because it can be stored by simply flipping it over, and it is also compact and highly portable since it can be flipped to maintain substantially the same shape in the non-use mode and the use mode.

Since the reciprocating type is thin and has a small overall thickness, when the blade is stored and not in use, the blade unit is difficult to rotate even when carried, and the blade can be sufficiently protected. It becomes effective by supporting it with a pair of arm parts as in the example.

By displacing the blade unit and storing the blade in the storage recess, the blade can be completely stored without being exposed to the outside, and the lower end of the blade or blade unit can be securely fixed for stable use and blade use. It is possible to protect the area.

By incorporating a driving part such as a motor other than a battery into the blade unit as in the embodiment, the overall weight balance can be kept good and the handling properties can be further improved.

[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. (arrow A direction in Figure 1), Figures 4 to 7 are side views of the lead plate and rotating contact plate, Figures 8, 9, and 11 are external front views of the same razor, and Figure 10 is the front view of the razor. The figure is an external side view of the same razor. In the drawings, 2...blade unit, 3...blade unit,
3b...lower end, 4, 5...arm part, 6...main body, 7...storage recess, 20a, 20b, 23a,
23b...Locking boss part, 24...Battery storage part, 4
2, 44... Rotating contact plate, 43, 45... Support shaft,
61...Motor.

Claims (1)

[Scope of Claims] 1. A blade unit having a blade at one end, and supporting the blade unit so as to be rotatable and displaceable by a predetermined stroke, and arbitrarily held at least in a use position and a non-use position, A reciprocating electric shaver comprising a main body having a storage recess for storing the blade of a blade unit rotated and displaced from its position in the non-use position. 2. The reciprocating electric shaver according to claim 1, wherein the main body includes a pair of left and right arm portions facing each other, and both sides of the blade unit are respectively supported inside the arm portions. 3. A locking boss portion elastically supported is provided on the main body side, and a gear that engages with the locking boss portion is provided on a support shaft on the blade unit side to hold the blade unit in the position. A reciprocating electric shaver according to claim 1 or 2. 4. The reciprocating device according to claim 1, 2, or 3, wherein the blade unit has a blade portion and a lower end portion on the opposite side formed approximately symmetrically with respect to the rotation axis. Model electric razor. 5. Claims 1 and 2, characterized in that 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.
The reciprocating electric shaver according to item 3 or 4.