JPS61193693A - 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 [Field of Industrial Application] The present invention relates to an electric shaver in which a razor blade unit is removably installed in a main body case.

[Conventional technology]

In conventional general electric razors, a razor blade unit is attached to the upper part of the main body case, and when not in use, the blade unit is folded toward the case so as not to get in the way, and when in use, it protrudes outside the case. is taking.

However, if the sharp razor blade unit is located below the top of the main body case when it is protruding, the upper part of the main body case may get in the way of seeing the tip of the sharp razor blade from above, or the posture of the main body case may change. When you want to change the angle or direction of the blade relative to your body, the upper edge of the two-body case touches your body, making it impossible to change your posture as you wish.

Therefore, in order to solve these problems,
Alternatively, but not limited to this, due to other arrangement configurations, etc., the entire edge shaving blade unit can be largely repositioned in the vertical direction with respect to the main body case, and when the edge shaving blade unit is used, the unit can be moved to a desired location in the main body case. A configuration has been proposed in which the razor blade unit is raised to the upper end, and then lowered and stored when the razor blade unit is not in use.

For example, this is disclosed in Japanese Unexamined Patent Publication No. 56-57477.

In this conventional example, a razor blade unit is swingably supported at the upper end of a frame (referred to as a handle in the above publication) that is supported vertically movably relative to two main body cases, and a frame is mounted above one main body case. When pushed up, the edge shaving blade unit automatically rises from its fallen position to a substantially horizontal position and can be driven.

[Problem that the invention seeks to solve]

However, in the conventional example mentioned above, when the edge shaving blade unit is used, the frame, the edge shaving blade unit, and its pivoting portion are all exposed upwards outside the main body case, and one piece of hair slides up and down the frame. There is a high risk that the blade may land on the pivot part of the razor blade unit or the like and become lodged.

There is a risk that the exposed razor blade unit will be damaged if it is dropped. Even when not in use, almost the entire edge shaving blade unit is exposed outside the case, giving it an unsightly appearance and being easily damaged by contact with other objects. In addition, when the frame is projected upward, the means for raising the razor blade unit and the means for driving it are complicated, the transmission system becomes long, and the structure tends to be weak.

〔the purpose〕

The basic object of the present invention is to eliminate the conventional drawbacks and to enable the edge shaving blade unit to be largely slid in the vertical direction with respect to the two-body case.

In addition, one object of the present invention is to ensure smooth sliding and rocking of the edge razor blade unit without hair or foreign matter getting caught in the sliding portion of the edge razor blade unit relative to the main body case or the pivoting portion of the edge razor blade unit. The aim is to make it possible for people to move forward.

Another object of the present invention is to stably support the razor blade unit against the main body case not only when the razor blade unit is not in use but also when it is in use, thereby ensuring that the razor blade unit is not damaged due to contact with other objects. The purpose is to prevent it.

Yet another object of the present invention is to provide a razor blade unit in a use position in which it is slid upwardly.

To automatically and effortlessly swing an edge shaving blade unit to a protruding posture and to drive the edge shaving blade unit effortlessly.

[Means for solving problems]

That is, the main feature of the present invention is that, as shown in FIG. 1, a shaving case 31 is attached to the upper side surface of the main body case 1 so as to be vertically movable. This edge shaving case 31 itself also serves as a slide operation button.

An edge shaving blade unit 30 is pivotably mounted to this edge shaving case 31. The edge shaving blade unit 30 is a known unit having a fixed comb blade 33 and a movable comb blade 34.

The edge shaving case 31 is provided with an opening 37, and the edge shaving blade unit 30 can swing between a position in which it is housed inside the opening 37 and a position in which it projects to the outside through the opening 37. In this way, the sharp shaving blade unit 30 is used only by the amount corresponding to the vertical stroke of the sharp shaving case 31.

It moves up and down together with the case 31.

An operating arm 56 is provided inside the case 31 to cause the edge shaving blade unit 30 to protrude when the edge shaving case 31 is moved upward. The operating arm 56 has one end connected to the edge shaving blade unit 30, for example, as shown in No. 7 [ffl, and is basically movable up and down together with the edge shaving case 31. Most preferably, the other end of the operating arm 56 is in contact with the main body case 1 or a member fixed thereto to regulate the upper and lower limits of movement, and the vertical stroke of the operating arm 56 is extremely smooth. It is assumed that the vertical stroke of the case 31 is smaller than that of the case 31.

Of course, when the vertical stroke of the edge shaving case 31 is set to be small, the other end of the operating arm 56 may be connected to the main body case l side in a state that does not allow vertical movement.

Means is provided for holding the edge shaving case 31 particularly in the use position where it is slid to the upper limit of movement. As this holding means, it is possible to use only a slide resistance at the upper slide end, or various moderation means including a concave-convex engagement, but a tongue mechanism including a door angle spring 64 as shown in FIG. It is desirable that the shaving case 31 be pressed upward in the use position and pressed downward in the non-use position to actively prevent wobbling.

Inside the edge shaving case 31, there is a edge shaving blade unit 30 in a state where it is slid to the upper use position.
A mechanism for driving the movable comb blades 34 is provided. Specifically, a vibrator 42 as shown in FIG. 7 is supported within the edge shaving case 31, and the edge shaving blade unit 30 is driven via the vibrator 42 by a motor M built in the two-body case 1.

[Effect]

In this case, when you put your hand on the edge shaving case 31 and slide it upward, in the most preferred embodiment, the upper movement limit of the operating arm 56 is first restricted by contact, and then the edge shaving case 31 is moved to the limit. When the blade unit 30 is slid to the use position, the operating arm 56 acts to cause the razor blade unit 30 to protrude outside of the opening 37, and in this state, the blade unit 30 is driven.

Conversely, when the edge shaving case 31 is slid downward from the upper usage position, in the most preferred embodiment, the lower limit of the operating arm 56 is first brought into contact and regulated, and then the edge shaving case 31 is moved to the limit non-position. When slid to the use position, the operating arm 56 swings the edge shaving blade unit 30 in the protruding position so as to store it in the opening 37.

〔Effect of the invention〕

According to the present invention as described above, the edge shaving blade unit 30 is pivotally attached to the edge shaving case 31 which is attached to the two-body case 1 so as to be slidable up and down. Therefore 1
By rationally sliding and attaching the shaving case 31 to the main body case 1.

The edge shaving unit 30 moves up and down as desired.

As a result, if necessary, the edge shaving blade unit 30 can be positioned near the upper end of the main body case 1 in use, and even above the upper edge of the case, so that the vertical stroke of the edge shaving blade unit 30 can be made as necessary and sufficient. You will also be able to harvest a large amount. Edge shaving case 31. In other words, the blade unit 30 does not shake or wobble with respect to the main body case 1.

Moreover, it can be made to slide up and down smoothly.

Moreover, the sliding portion between the main body case 1 and the crevice shaving case 31 is not exposed to the outside near the crevice shaving blade unit 30. The pivoting portion of the edge shaving blade unit 30 relative to the edge shaving case 31 is inside the opening 37 of the case 31 .

Operation arm 5 for operating the edge razor blade Uniso l-30 in and out
6 is also inside the edge shaving case 31. Therefore, hair does not fall on these sliding portions, pivoting parts, and swinging mechanisms, and it is possible to ensure that the sliding of the edge shaving case 31 and the rocking of the edge shaving blade unit 30 remain stable over long periods of use. . It goes without saying that the sharp razor blade unit 30 is stored in the opening 37 of the sharp razor case 31 when not in use, but even when the razor blade unit 30 is in use and protrudes outside the case, the blade unit 30 etc. can be effectively prevented from being damaged by contact with other objects.

The case 3 cuts the vertical stroke of the operating arm 56.
According to the embodiment of the present invention, which is set smaller than that of 1, when the case 31 is moved up and down beyond the vertical movement limit of the operating arm 56, the operating arm 56 moves the razor blade unit 30 into the opening 37. Since the shaving case 31 can be switched between the position of protruding outside and the position of being retracted within the opening 37 by pushing and pulling, this case is suitable for increasing the vertical stroke of the edge shaving case 31.
Moreover, the swinging of the cough blade unit 30 can be made effortless and reliable.

According to the embodiment of the present invention in which the vibrator 42 is supported on the inner surface of the edge shaving case 31, the vibrator 42 and the edge shaving blade unit 30 are supported by the edge shaving case 31 and move up and down together, so that one body case is required. The blade unit 1-30 can be reliably driven simply by transmitting the power of the motor M on the first side to the vibrator 42. By swinging the blade unit 1-30, the blade unit 30 can be easily switched between a driving state and a non-driving state.

Furthermore, according to the embodiment of the present invention, which is provided with a trouble mechanism including a trouble spring 64 between the main body case 1 side and the wrinkle shaving case 31 side, the wrinkle shaving case 31 can be moved between an upper use position and a lower non-use position. It can be held securely without wobbling depending on the position. Therefore, especially when the edge shaving case 31 is placed in the use position, the edge shaving blade unit 30 that is linked to the movement of the case 31 can be reliably brought into the protruding position, and the drive by the motor M can also be transmitted to the blade unit 30. It has the advantage of being reliable.

〔Example〕

The drawings illustrate an electric shaver according to the present invention.
In the figures and FIG. 6, the main body case 1 is formed by joining the front and rear halves 1a and 1b in a hugging manner, and has an overall shape with the upper part bent slightly backward.

In FIG. 1, a motor support case IC is fixed to the front of the upper part of the front case 1a, and a two-wheeled motor is provided with output shafts 3a and 3b on the front and rear sides of an arm 2 that projects inward from the support case 1c. M is supported. Main case 1
The lower part of the battery storage chamber is configured to house a rechargeable main battery B1. A charging circuit board, a charging transformer T, a spare battery B2, etc. are incorporated, and a charging plug 5 is attached to the lower end of the main body case 1 so as to be freely retractable laterally.

In FIGS. 2 and 5, a switch knob 6 having a triangular shape when viewed from the front is arranged in the upper and lower middle of the front case 1a, and this knob 6 can be pushed inward and swung around a thin hinge 7. . An arm 8 protruding from the inner surface of the knob 6 engages with an operating piece 10a of a button-on/button-off switch 10 fixed in the case.
Each time the switch 10 is pressed, the switch 10 is turned on and off, thereby switching the motor M between starting and stopping.

A lock button 1) for the switch knob 6 is attached to the side surface of the rear case ib so that it can slide up and down, and when the lock button 1) is sliding downward, the switch knob 6 can be pushed in.

If you slide the button 1) upward, the corresponding button 1
) The distal end lock piece 12a of the lock plate 12, which is engaged and connected to swing, intervenes between the switch 10 and the arm 8 and prevents the switch knob 6 from being pushed in. Elastic arm 12b and rear case 1b connected from lock plate 12
By elastic engagement with a pin 13 protruding from the inner surface of the lock button 1), the lock button 1) is held in the vertical sliding position.

Additionally, a slide knob 14a of a backup switch 14 is separately provided on the front surface of the front case 1a for driving the motor M using a backup dry battery B2 when the rechargeable battery B1 is insufficiently charged.

In FIG. 1, a rotary razor unit 20 is mounted on the front surface of a motor support case IC. This razor unit 20 includes a dome-shaped outer cutter 22 supported by an outer cutter holder 21, and an outer cutter 22 supported by an inner cutter holder 23.
It consists of a plurality of inner cutters 24 that are in sliding contact with. Outer blade holder 21
is screwed into the motor support case IC, and the inner blade holder 23 is connected to the front output shaft 3a of the motor M.

On the upper rear surface of the main body case 1, there is a razor blade unit 30.
The edge shaving case 31 that incorporates the 9 body case 1 protrudes further upward than the main body case 1.

It is attached so that it can be slid up and down to a non-use position where it retracts downward.

The edge shaving blade unit 30 mainly includes a fixed comb blade 33 fixed to a holder 32 as shown in FIG. 7, and a movable comb blade 34 that slides in contact with the fixed comb blade 33 and supported so as to be able to reciprocate in the lateral direction. . The fulcrum pins 35, 35 protruding from the left and right outer sides of the holder 32 are formed on the inner surface of the upper part of the edge shaving case 31, and the pin receivers are engaged and supported in the recesses 36, 36, and the entire edge shaving blade unit 30 is It swings around a fulcrum pin 35 and moves in and out of an opening 37 formed in the upper rear surface of the edge shaving case 31.

A cover plate 38 is fitted and connected to the front surface of the edge shaving case 31, and the edge shaving blade unit 30 is installed between the two sides 31 and 38.
is contained. Notches 39 are provided on the left and right sides of the lower end of the cover plate 38, and engaging pieces 40 and 40 with hooks protruding forward from the left and right sides of the edge shaving case 31 are provided in the notches 39.
39, and are inserted into and engaged with the vertical slits 41, 41 formed on the left and right sides of the rear surface of the rear case 1b, respectively, so that the edge shaving case 31 is attached to the main body case 1 so as to be vertically slidable.

The inner space of the edge shaving case 31, that is, between the cover plate 38 and the edge shaving blade unit 30, includes a plastic vibrator 42 for driving the movable comb blade 34 of the edge shaving blade unit 30. As shown in FIG. 7, this vibrator 42 has a pair of left and right support arms 43, 43 that cantilever downward from the upper end, and backward-facing pins 44, 44 integrally protruding from the tips of each arm 43, 43. The pins 44 are fitted and supported by pivot bosses 45 provided on the inner surface of the edge shaving case 31, as shown in FIG. At the center of the vibrator 42 is a long hole 46 in which an upper wide hole 46a and a lower narrow hole 46b are connected.
A bifurcated engaging portion 47 into which the protruding piece 34a provided at the center of the movable comb blade 34 engages is provided at the center of the upper end of the vibrator 42.

Then, the eccentric cam 50 attached to the rear output shaft 3b of the motor M is connected to the hole in the rear case 1b and the force is applied.

The eccentric cam 50 penetrates into the shaving case 31 through an elongated hole 49 in the vertical direction of the bar plate 38, and the eccentric cam 50 engages in the elongated hole 46 of the vibrator 42. In such a case, when the edge shaving case 31 is in the lower non-use position, the eccentric cam 50 moves over the vibrator 4 as shown in FIG. 8 (al).
The vibrator 42 and the eccentric cam 5 are located in the wide hole 46a of the
0 is avoided, and the vibrator 42 is not driven.

When the edge shaving case 31 is pushed upward to the use position, the eccentric cam 50 engages in the narrow hole 46b set to the same size as the outer diameter of the eccentric cam 50, as shown in FIG. As the cam 50 rotates, the vibrator 42 moves the support arm 43.
Due to the elastic deformation of the upper thin-walled portions 43a of 43, they are reciprocated in the left-right direction substantially in parallel.

Note that on the inner surface of the cover plate 38, there are small hemispherical protrusions 51 and 5 that face the tip of the support arm 43 of the vibrator 42.
1 is provided to prevent the pin 44 from lifting off from the pivot boss 45. Further, on the upper rear surface of the vibrator 42, small hemispherical protrusions 53 are provided which face the inner surface of the vertical wall 52 provided inside the opening 17 of the edge shaving case 31.
This aims to reduce the sliding resistance when moving from side to side.

Next, a structure for operating the edge shaving blade unit 30 to move in and out will be explained.

A pivot hole 5 is provided on the upper end side of the holder 32 in the razor blade unit 30 at a front position eccentric to the pivot pin 35.
4, and the tip of an operating arm 56 is rotatably connected to this pivot hole 54 via a pin 55. Operation arm 5
6 is vertically movable together with the razor blade unit 30;
A guide 60 provided on the cover plate 38 allows vertical movement without wobbling in the left-right direction. An operating piece 56a facing forward is integrally provided at the lower end of this operating arm 56.

The operation piece 56a is passed through a vertical slit 57 provided transparently in the cover plate 38, and the base end (front end) of the operation piece 56a is inserted into a notch 5 formed at the side edge of the hole 48 of the rear case 1b.
8 is an engagement guide that can be moved up and down within a certain range.

In this case, when the edge shaving case 31 is in the lower non-use position, the operating piece 56a of the operating arm 56 comes into contact with the lower end of the notch 58 on the main case side to regulate the position, as shown in Fig. 9+8). Then, the edge shaving blade unit 30 is in a position stored inside the opening 37. Edge shaving case 3
1 is slid upward to the use position, the operating piece 56a is stopped in contact with the upper end of the notch 58 on the main body case side during the upward movement, as shown in FIG. 9(b).

By further moving the case 31 upward, the operating arm 56 is relatively pulled downward with respect to the edge shaving case 31, and as a result, the edge shaving blade unit 3
0 is swung up and swung around the fulcrum pin 35, and the opening 37
protrudes from the rear of the case. When the edge shaving blade unit 30 swings to the protruding position, the protruding pieces 34 of the movable comb blades 34
a engages with the engaging portion 47 of the vibrator 42.

When the edge shaving case 31 is moved downward, the operating piece 56a first comes into contact with the lower end of the notch 58 on the way, and then the operating arm 56 is pushed upwards by the downward movement of the case 31, and the edge shaving is performed. The blade unit) 30 swings downward and is stored.

In this case, the pivot hole 54 traces a circular arc gL with respect to the vertical linear movement of the operating arm 56, but the difference in the movement trajectory is absorbed by the elastic deformation of the operating arm 56.

A means is provided for holding the edge shaving case 31 in the vertical position, which is slid up and down as described above.

The holding means is shown in Figs. 3, 7, and 9 (a).
)・As shown in (b), the spring receiver has holes 62.63 on the opposing surface of the rear wall 61 of the rear case 1b and the cover plate 38, and the trouble consisting of a helical spring is provided across these holes 62.63. Both ends of the spring 64 are wound and supported in a deformed state. And the edge shaving case 31 is the 9th
In the lowered state as shown in Figure (a), the trouble spring 64
The expansion restoring force relatively elastically urges the edge shaving case 31 downward, and the lower end 31a of the case is received and supported by the rear stepped portion 65 of the rear case 1b. When the edge shaving case 31 is raised as shown in Figure 9 (bl), the trouble spring 6
4 crosses the dead center and switches to the opposite posture, and this spring 6
4, the edge shaving case 31 is elastically urged upward, and a stopper 66 protruding from the front surface of the cover plate 38 is attached to the upper edge locking portion of the hole 48 of the rear case 1b as shown in FIG. 10 (bl). Contact with 67.

The upper edge locking portion 67 of the hole 48 on the main body case 1 side is shown in FIG.
As shown in al.(b), the front side is formed in a tapered cross-sectional shape, and the stopper 66 is also formed in a tapered cross-sectional shape to be externally engaged with the locking portion 67 from below.
The tapered fitting of both 67 and 66 also prevents the edge shaving case 31 from wobbling when it is in the operating state at the rising end.

In the above embodiment, the movable comb blade 34 is driven by the rear output shaft 3b of the motor M.

The specific means for transmitting the power of the drive system such as the motor M to the movable comb blades 34 can be changed as desired. Further, in the illustrated example, the razor unit 20 on the side of the main body case 1 is of a rotary type, but it may be of a reciprocating type instead. When the razor unit 20 is of a reciprocating type, a driver is provided on the main body case 1 side for switching the rotational motion of the output shaft of the motor M to an oscillating motion. The child 42 will be linked directly or indirectly. In this case, the slider 42 simply functions as an intermediate power transmission member.

Further, as a means for holding the edge shaving case 31 at the upper movement limit and the lower movement limit, it is most preferable to use a trouble mechanism including the trouble spring 64 shown in FIG. For example, this may be achieved by providing a moderating means such as a concave-convex engagement between the cover plate 38).

Further, in the present invention, it is not essential that the edge shaving blade unit 30 protrudes further above the upper end of the main body case 1 when the edge shaving case 31 is moved to the upper use position.

In such a case, it is not necessary to take a large vertical stroke of the edge shaving case 31 as in the illustrated example, so the base end (front end) of the operating arm 56 is linked so that it does not move vertically toward the main case 1 side. You may do so.

[Brief explanation of the drawing]

FIG. 1 is an overall side view taken longitudinally of the main parts of an electric shaver according to the present invention, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIG. 3 is a sectional view taken along the line m-m in FIG. 1. FIG. 4 is a sectional view taken along the line IV-mV in FIG. 1. FIG. 5 is an overall front view with a portion cut away, FIG. 6 is an overall side view, and FIG. 7 is an exploded perspective view of main parts. Figure 8(a)・
(b) is a front view mainly explaining the operating state of the vibrator, FIG. 8+8) shows the state when not in use, and FIG. 8(b) shows the state when in use. Figure 9 (al) (bl is a front view showing the holding means of the edge shaving case. Figure 9 (al is a state when not in use, Figure 9 (bl is a state when in use. a) and Figure 1) are longitudinal cross-sectional side views illustrating the movement of the razor blade unit into and out;
FIG. 10(a) shows the state when not in use, and FIG. 10(b) shows the state when in use. 1... Main body case. 30... Kiwa razor blade unit. 31... Kiwa shaving case. 33...Fixed comb blade. 34...Movable comb blade. 37...Opening. 38... Cover plate 42... Vibrator. 56...Operation arm. 64...Trouble spring. Inventor Yoshinori Yasufuji Fig. 2 1b Fig. 3 - Fig. 4 Fig. 5 Fig. 6 Fig. 8 (a) Fig. 8 (b) Fig. 9 (a) Fig. 9 (b) Fig. 10 (a) Factor 1O (b)

Claims (5)

[Claims] (1) An edge shaving case 31 that can be operated up and down with fingers is attached to the upper side of the main body case 1 so as to be slidable up and down between an upper use position and a lower non-use position; Fixed comb blade 33 and movable comb blade 34
The edge shaving blade unit 30 consisting of the edge shaving blade unit 30 is pivotably mounted so as to be able to move in and out of the edge shaving case 31 through an opening 37 formed in the edge shaving case 31. The operating arm 56 is provided with an operating arm 56 for swinging operation, and one end of the operating arm 56 is connected to the edge shaving blade unit 30 and the other end is connected to the main body case 1 side. When the edge shaving blade unit 30 is moved to the operating position, the edge shaving blade unit 30 protrudes outside from the opening 37 via the operating arm 56, and when the edge shaving case 31 is moved to the non-using position, the edge shaving blade unit 30 is extended through the operating arm 56. When the edge shaving blade unit 30 protrudes outside the edge shaving case 31, the edge shaving blade unit 30 is moved by a drive system built into the main body case 1. An electric shaver characterized by comprising means for driving the movable comb blades 34. (2) The operating arm 56 has a sharp edge at one end of the razor blade unit 3.
0 and moves up and down together with the sharp shaving case 31, so that the vertical stroke of the operating arm 56 is smaller than the vertical stroke of the sharp shaving case 31.
The other end is regulated to come in contact with the main body case 1 side, and when the edge shaving case 31 is moved to the above-mentioned use position beyond the upper movement limit of the operation arm 56, the edge shaving blade unit 30 is moved to the outside of the opening 37. However, when the edge shaving case 31 is moved beyond the lower limit of the operating arm 56 to the non-use position, the edge shaving blade unit 30 is stored in the opening 37. The electric razor mentioned. (3) When the edge shaving case 31 is moved to the upper use position, the edge shaving blade unit 30 is attached to the main body case 1.
The electric shaver according to claim 1 or 2, wherein the electric shaver projects upwardly from the upper end of the shaver. (4) Between the main body case 1 and the crease shaving case 31, there is provided means for holding the crease shaving case 31 in the use position where it has been moved upward and the non-use position where it has been moved downward. The electric shaver according to item 1, item 2, or item 3. (5) The means for holding the edge shaving case 31 in the vertical position includes a toggle spring 64 stretched between the main body case 1 side and the edge shaving case 31 side, and the toggle spring 64
The electric shaver according to claim 4, wherein the edge shaving case 31 in the use position is pressed upward and the edge shaving case 31 in the non-use position is pressed downward.