JPH0439351B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a swing-type electric hair clipper equipped with a plow-cutting comb that can be freely moved in and out, and which allows the plow-cutting comb to be moved in and out easily and reliably even under swinging conditions. It was designed so that it could be done.

[Background technology]

FIG. 12 shows the basic configuration of the swing-type electric hair clipper previously proposed by the applicant, in which a head case 1b equipped with a fixed blade 2 and a movable blade 3 swings relative to the grip case 1a. can be pivoted,
It allows you to trim the nape of the neck and plow with a comfortable grip.

When such an electric clipper is equipped with a plow-cutting comb 5, there are two possible methods: one in which the retracting operation of the plow-cutting comb 5 is performed on the head case 1b, and the other on the grip-portion case 1a.

In the former case, as shown in Fig. 11, the head case 1b
Although the slide knob 23 for moving in and out of the plow comb 5 is placed on the top, it is impossible to incorporate the slide knob 23 onto the head case 1b due to space considerations. When the slide knob 23 is slid, a downward force is applied to the head case 1b, and when the head case 1b is in an upwardly inclined position, this causes the head to shake unexpectedly. It is also impossible to operate the slide on the head case 1b with one hand.
This is inconvenient because the grip case 1a must be held with a hand other than the hand that pinches the slide knob 23.

On the other hand, the latter method in which the mowing comb 5 is moved in and out on the grip case 1a is advantageous because there is no space restriction and a stable sliding operation can be performed with one hand. In that case, as shown in FIG. 12, the plow cutting comb 5 is provided on the head case 1b side, and the slide knob 23 is provided on the grip part case 1a side. A configuration will be adopted in which the connection is made by a flexible connecting plate 25 that freely bends and deforms as the head swings.

However, in this latter method, when the head case 1b is swung upward, the flexible connecting plate 25 is bent and deformed, so even if the slide knob 23 is slid under this condition, ,
The plow-cutting comb 5 does not reliably follow this, making it difficult to obtain stable advancing and retracting operations. Also, specifically, head case 1
If the amount of protrusion of the plow-cutting comb 5 is set based on the posture in which the head case 1b is tilted upward in an upwardly inclined posture, the plow-cutting comb 5 There is a tendency for 5 to stand out too much.

[Purpose of the invention]

In view of this fact, the first object of the present invention is to provide a slide knob for operating a plow-cutting comb that can be easily slid with one hand.

A second purpose is to enable the plow comb to move in and out smoothly and without any mechanical force in conjunction with this slide operation.

More preferably, the amount of protrusion of the plow comb is kept as constant as possible in both the basic position where the head case is in a substantially straight line in front of the grip case and the swinging position where the head case is tilted upward. The third purpose is to

[Summary of the invention]

The present invention is basically a swing-type electric shaver in which a comb is arranged on the head case side and a slide knob is arranged on the grip case side so that it can be operated with one hand. Furthermore, the connecting member that connects the plow-cutting comb and the slide knob is configured to swing as the head case swings, instead of being bent and deformed as in the past. That is, in many specific implementations, the fulcrum is moved and swung while allowing the connecting member to move in and out by fitting the elongated hole and the pin. Further, the rear end side of the connecting member is connected to the slide knob via a relief means, and the relief means allows the connecting member to swing around a movement fulcrum. Thus,
A plow comb can be smoothly moved in and out via a connecting member in conjunction with the slide operation of the slide knob.

When carrying out the operation, even when the head case is in an oscillating tilted position, this relief means can be used to ensure that the protrusion amount of the comb is the same as when it is in the basic position of being in a straight line in front of the grip part case. It is regulated to be constant. However, it is not an essential requirement of the present invention that the relief means actively regulate the amount of protrusion of the plow comb.

〔Example〕

1 to 8 illustrate an electric hair clipper according to the present invention, in which a main body case 1 includes a long box-shaped grip case 1a that is long in the front and back direction, and a fixed blade 2.
and a head case 1b equipped with a movable blade 3. A head case 1b is pivotally connected to the front part of the grip case 1a so as to be swingable vertically around left and right support shafts 4, 4. That is, the head case 1b can be switched between a basic position in which it is substantially straight in front of the grip case 1a (see FIG. 4) and an upwardly tilted position (see FIG. 5).

In FIG. 2, a motor 6, a battery, and the like, which are the power source of the movable blade drive mechanism, are built into the grip case 1a. The head case 1b has a built-in plow comb 5 that can be freely moved in and out from the front end thereof, and a blade unit 7 having a fixed blade 2 and a movable blade 3 is removably attached to the lower surface of the head case 1b. .

The blade unit 7 is equipped with a unit stand 8 having a U-shaped cross section. A comb-shaped fixed blade 2 is fixed to the inside of this so that its cutting edge protrudes forward, and a comb-shaped movable blade 3 is mounted on the unit stand 8. The upper surface of the fixed blade 2 is pressed and biased by a spring 10 attached above. A vibrator 11 is installed inside the head case 1b, and a vibrating lever 12 integrally formed at the front end of the vibrator 11 projects forward to engage and disengage from the passive piece 13 fixed to the upper surface of the movable blade 3. possible to engage. Further, an eccentric pin 15 fixed on the shaft of the motor 6 is engaged with a vertically long groove 14 formed on the rear end surface of the vibrator 11 . In such a case, when the vibrator 11 is caused to reciprocate from side to side via the eccentric pin 15 by the drive of the motor 6, the vibration lever 12 integrated therewith reciprocates in the same direction, causing the movable blade 3 to move against the upper surface of the fixed blade 2. Slide back and forth in the left and right direction.

In FIG. 3, the plow-cutting comb 5 has plow teeth 18 at its front end, in which shallow grooves 16 and deep grooves 17 are arranged in alternating rows in the left-right direction. and the cutting edge of the blade unit 7.

In FIGS. 2 and 4, the front end of a dogleg-shaped connecting member 19 is integrally connected to the rear end of the plow-cutting comb 5, and a long hole 20 that is long in the front-rear direction is formed in the middle of the member 19. A pin 21 formed on the side of the grip case 1a and coaxial with the support shaft 4 is slidably fitted into the elongated hole 20.

A guide pin 22 is provided protruding from the rear end of the connecting member 19. On the other hand, a slide knob 23 which also serves as a switch is slidably mounted on the outer surface of the grip case 1a, and a substantially arcuate relief groove 24 is formed on the inner surface of the knob 23. The guide pin 22 is slidably fitted into the relief groove 24 and connected. This relief groove 24 and the guide pin 22 fitted therein are representative examples of relief means in the present invention.

In such a case, as the head case 1b swings around the support shafts 4, 4, the connecting member 19 integrated with the plowing comb 5 moves relative to the elongated hole 20 and within the elongated hole 20. The guide pin 22 is pivotally supported by the pin 21 and slides within the escape groove 24. That is, when the head case 1b rotates to an upwardly inclined position, the guide pin 22 moves downward within the relief groove 24, and the connecting member 19 swings while being guided by the elongated hole 20 and the pin 21. Plow cutting comb 5
moves upward integrally with the head case 1b. When the head case 1b rotates from the upwardly tilted position to the original straight line, the guide pin 22 moves upward in the relief groove 24, and the connecting member 19
The plow comb 5 is guided by the elongated hole 20 and the pin 21 and swings in the opposite direction to that described above, so the plow comb 5 moves downward together with the head case 1b.

Next, the movement of the plow comb 5 itself will be explained.

Assume that the head case 1b is now in a basic posture in a straight line. At this time, the guide pin 22 of the plow comb 5 is located at the upper end of the escape groove 24, as shown in FIG. In this state, when the slide knob 23 is slid from the "off" position a (see FIG. 2) to the forward "skip-cut" position b, the guide pin 22 is brought into contact with the upper half 24a of the relief groove 24. The connecting member 19 is displaced forward through the engagement, and the connecting member 19 is moved forward by the pin 2 by the slide stroke of the slide knob 23.
1 as a guide, and the plow teeth 18 of the plow comb 5 protrude forward by the same stroke from the upper wall of the head case 1b. This is the state shown by the solid line in FIG. In this protruding state, both the shallow groove 16 and the deep groove 17 overlap the cutting edge of the fixed blade 2, so
Hair is introduced into both the shallow grooves 16 and the deep grooves 17 and is shorn. When the slide knob 23 is slid forward to the "c" position (low cutting), the shallow groove 16 protrudes forward beyond the cutting edge of the fixed blade 2, and only the deep groove 17 overlaps with the fixed blade 2 (as shown in Fig. 6). In this protruding state, only the hair introduced into the deep groove 17 is plowed. In addition, in Fig. 2, move the slide knob 23 from the "off" position to the rear d
Slide it into the normal "on" position.

When the head case 1b is in the upward position shown in FIG. 5, the connecting member 19 is in an inclined position and the guide pin 22 is located at the lower end of the relief groove 24.
In this state, when the slide knob 23 is slid from the "off" position a to the "skip cut" position b, the guide pin 22 moves into the lower half 24 of the relief groove 24.
b is slid upward, and the connecting member 19 is inserted into the elongated hole 20.
The plow comb 5 is guided by the pin 21 and pushed forward, causing the plow comb 5 to protrude as described above (as shown by the solid line in FIG. 7). This will allow the hair introduced into both the shallow grooves 16 and deep grooves 17 to be shorn.
When the hair is further slid to the "low cutting" position c, only the hair introduced into the deep grooves 17 is cut (as shown by the imaginary line in FIG. 7).

Now, when the plow comb 5 swings in conjunction with the swing of the head case 1b as described above, the relief groove 24 is aligned with the virtual arc line M with the pin 21 as the swing center, as shown in FIG. In the case where the head case 1b is simply formed into an arc shape, in the state where the head case 1b is in a straight line basic posture and in the state where it is tilted upward,
Even though the sliding amount of the slide knob 23 is constant, there is a difference in the amount of protrusion of the plow comb 5. Specifically, in the inclined state, the plowing comb 5 tends to protrude more forward than the specified position.

In other words, when the head case 1b is tilted and the slide knob 23 is operated to project the plow comb 5, the connecting member 19 will move in parallel by the same amount as the operation stroke _t1 of the slide knob 23, as shown in FIG. shall be. However, since the elongated hole 20 is guided and restricted by the pin 21 and the moving direction of the plow comb 5 is limited to the front-rear direction parallel to the top wall of the head case 1b, the connecting member 19 is limited in its length. hole 20
Move diagonally upward along the center line. As a result, although the amount of movement in the horizontal direction (corresponding to t ₁ ) is the same, the amount t ₂ that the plow comb 5 actually moves becomes larger than the amount of slide t ₁ of the slide knob 23 . This deviation is caused by the fact that the relief groove 24 is on the virtual arc line M.
As long as it is above, "Suki Karita" and "Suki Karisho"
occurs in both cases.

In order to eliminate such positional deviation, the area where the guide pin 22 of the connecting member 19 engages with the relief groove 24 when swinging, that is, the lower half 24 of the relief groove 24
It is conceivable to position b behind the previous virtual arc line M to reduce the amount of protrusion of the plowing comb 5 at each plowing position.

For example, as shown in FIG. 7, the relief groove 24 is formed by an imaginary arc line N located behind the imaginary arc line M and having a smaller curvature r than this. According to this,
The protruding position of at least one of "high cutting gap" and "low cutting gap" can be corrected as specified. but,
On the other hand, a slight deviation still occurs.
In other words, by operating the slide knob 23, the connecting member 19
When the guide pin 22 moves diagonally upward, the guide pin 22 also moves upward corresponding to the vertical movement amounts h ₁ and h ₂ of the connecting member 19, as shown in FIG. However,
The lower half 24 of the relief groove 24 in this direction of movement.
Since b has an inclined arc shape, the deviation correction amount e ₁ from the off position to the "sukikarita" (from A to B),
From “Suki Karita” to “Suki Karisho” (B to C)
There will be a difference in the deviation correction amount e ₂ , and the plowing comb 5 will protrude slightly in either the "high cut" or "low cut" position, or conversely, the protrusion amount will be slightly insufficient. It is from. Of course, the example shown in FIG. 10 can also be put to practical use, which is what the present invention anticipates. However, this discrepancy can be resolved.

Therefore, in the illustrated example, the lower half 24 of the relief groove 24
b is a straight line that slopes backward at a constant angle. In other words, as shown in FIG. 8, the center of the guide pin 22 is based on the state in which the plow comb 5 protrudes to the specified position at each operating position of "more cutting" and "less cutting". The positions (position B and position C in the figure) were connected with a single straight line, and this was set at the center of the lower half 24b of the relief groove 24. In this case, it is possible to accurately correct the deviation in the amount of protrusion at each operation position of "more cutting" and "less cutting", and regardless of whether or not the posture of the head case 1b is changed, the cutting comb 5 can always be projected at a specified position.

[Another example]

Although the illustrated example is as described above, the present invention is not limited thereto.

For example, when the slide knob 23 is in the "open" position, the relief groove 24 is formed along an arc line passing through the center of the guide pin 22 with the pin 21 as the pivot center, as shown in FIG. Good too. With this, the amount of protrusion of the plow-cutting comb 5 at the "high-cut" position can be adjusted to the specified amount, but also when the "low-cut" position is set.
Since the positional deviation is slight, it does not cause any practical problems. To the same effect, the relief groove 24 may be formed along an arc line passing through the center of the guide pin 22 with the swing pin 21 as the center when the mowing member is in the "less cutting" position. Furthermore, a part of each of the above circular arc lines is made straight or a circular arc line with a different curvature, so that the amount of protrusion of the plow-cutting comb 5 is as specified in both cases of "more cutting" and "less cutting". This is possible, and this point can be adopted as needed.

In this way, the shape of the relief groove 24 essentially only needs to correspond to the position of the guide pin 22 in each operating position of "more cutting" and "less cutting", and the shape is limited. It's not a thing.

Further, the relief groove 24 functions only to allow the connecting member 19 to swing, and the upper half 24
It may be formed in an arc shape extending from a to the lower half portion 24b. The guide pin 22 may be provided on the slide knob 23 side, and the escape groove 24 may be formed on the connecting member 19 side. Of course, slide knob 2
The connecting structure between the connecting member 3 and the connecting member 19 may be replaced with another link mechanism as long as it allows the connecting member 19 to swing.

The slide knob 23 may be used exclusively for moving the plowing comb 5 in and out, and a separate knob may be used for switching the switch. In addition, instead of the two-step protrusion operation of the first protrusion position (large plow position b) and the second protrusion position (small plow position c), the plow-cutting comb 5 is operated in one stage at the first protrusion position or the second protrusion position. It may be only.

〔Effect of the invention〕

As explained above, in the present invention, the plow cutting comb 5 and the slide knob 23 are connected by the connecting member 19 that swings as the head case 1b swings. Then, the connecting end of the connecting member 19 to the slide knob 23 is connected to the slide knob 23 via a relief means (corresponding to the relief groove 24 and guide pin 22 in the embodiment) that allows the rocking of the connecting member 19. It was decided that Therefore, even when the slide knob 23 is slid in the upwardly tilted position of the head case 1b, the plow comb 5 reliably follows the slide operation of the slide knob 23 via the connecting member 19 to move in and out. do. Further, since the slide knob 23 is provided on the side of the grip case 1a, the plowing comb 5 can be moved in and out with one hand gripping the grip case 1a, making it easy to use.

[Brief explanation of drawings]

1 to 7 show an embodiment of the electric hair clipper according to the present invention, in which FIG. 1 is an overall plan view, FIG. 2 is an internal plan view, and FIG. 3 is a plan view of a plow comb. , FIG. 4 is a vertical side view when the head case is in the basic posture of straight line, FIG. 5 is a vertical side view when the head case is in the upward tilted posture,
Figure 6 is a vertical side view with the head case in the basic position in a straight line and the plow comb protruding;
FIG. 7 is a longitudinal sectional side view with the head case in an upwardly tilted position and the plow comb protruding.
FIG. 8 is an enlarged side view of a main part illustrating the shape and function of the lower half of the relief groove in the present invention. FIG. 9 and FIG. 10 are schematic side views of main parts showing comparative examples regarding relief grooves, respectively. FIG. 11 is a partial plan view of an electric clipper showing a comparative example with the present invention. FIG. 12 is a side view of an electric clipper showing another comparative example with the present invention. FIG. 13 is a schematic sectional view showing another embodiment of the present invention. 1...Body case, 1a...Grip case, 1
b... Head case, 2... Fixed blade, 3... Movable blade, 5... Plow comb, 19... Connecting member, 20
...long hole, 21 ... pin, 22 ... guide pin,
23...Slide knob, 24...Escape groove, 24
a... Upper half of the relief groove, 24b... Lower half of the relief groove.

Claims (1)

[Claims] 1 The main body case 1 consists of a grip case 1a and a head case 1b equipped with a fixed blade 2 and a movable blade 3 that slides thereon, and the head case 1b can swing freely relative to the grip case 1a. is pivotally connected to
A plow cutting comb 5 is provided on the head case 1b side, and a slide knob 23 is provided on the grip case 1a side, and the plow cutting comb 5 and the slide knob 23 swing as the head case 1b swings. The connecting member 19 is connected by a movable connecting member 19, and the connecting end of the connecting member 19 to the slide knob 23 is connected to the slide knob 23 via a release means that allows the connecting member 19 to swing. Clippers.