JPS5852673B2 - hair cutlet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hair cutter that can both comb and cut hair.

When adopting a configuration in which a blade block is stacked behind the base end of the comb teeth of a hair comb such as a comb, the hair is combed by the hair comb, and then the blade block is advanced onto the comb teeth to perform a cutting operation. This is convenient because the comb and cutter can be operated continuously without having to change hands, compared to conventional combs and cutters that were separate.

However, such hair cutters require a switch operation to activate the blade block and an operation to move the blade block forward and backward, making it difficult to use.

Therefore, an object of the present invention is to provide a hair cutter with improved usability.

An embodiment of the invention is shown in FIGS. 1 to 13.

That is, this hair cutter has a housing 3 in which the grip part 2 is slightly inclined with respect to the blade part 1, as shown in FIG.
Split housings 4 and 5 are formed approximately symmetrically as shown in Fig. 4.
A driving part is built into the grip part 2, and a comb 6 and a blade block 7, which are hair combing members, are attached to the blade part 1.

As shown in FIG. 4, the drive section has a gear box 9 attached to the front end of the motor 8 with screws 10, and a printed circuit board 11 soldered to the motor terminals 8a at the rear end, which also serves as an electrical connection.

As shown in FIG. 5, the gear box 9 is provided with a pin 12 at right angles to the motor shaft 8b that has entered the gear box 9, and a crown gear 14 having an eccentric cam 13 is passed through the pin 12 and press-fitted onto the motor shaft 8b. The pinion 15 and the crown gear 14 are engaged with each other, the rear end of the drive ring 16 is fitted into the eccentric cam 13, and an engagement pin 17 is provided at the tip of the drive ring 16 to project upward and downward.

Further, a boss 17' is provided on the gear box 9 corresponding to the end of the pin 12, into which the middle part of the L-shaped lever 18 is fitted, and the bush 19 is press-fitted into the boss 17'.

The bar 18 has a retaining pin 20 that protrudes vertically at its tip, and its rear end is bent at right angles and press-fitted to the tip of the abbreviated handle 21 to connect the tip and the gear box 9. A return spring 22 is interposed between the projecting portion and the projecting portion.

Lock holes 23 and 24 are formed at two predetermined positions in the bent piece 21a at the rear end of the handle 21.

On the other hand, a switch spring 25 is provided on the surface of the printed circuit board 11, and a switch contact 26 is provided on the surface of the handle 2.
1 about the boss 17', the tip of the bent piece 21a of the handle 21 pushes the switch spring 25 and pushes the switch contact 26.

One end of a flexible printed circuit board 27 serving as a wiring board is attached to the end of the printed circuit board 11, and a pin stand 28 is connected to the other end, and a power pin 29 is provided on the pin stand 28. The piece 30 is extended and the battery 31 is connected.

This driving part is positioned and fixed in the grip part of the housing 5 by a rib, the tip and rear ends of the handle 21 are passed through the notches 32 and 33 of the housing 5, the middle part is brought out to the outside, and the pin 29 is inserted into the rear end surface of the housing. It is exposed through the hole 34.

Further, a lock button 35 is slidably attached to the housing 5 adjacent to the rear end of the handle 21, and the tip protrusion 35a of the lock button 35 is inserted into the lock hole 23° 24 of the handle 21.
The rear end 35b of the lock button 35 is formed thin to provide self-resilience, and a positioning rib 35c is provided on its surface to face the housing boss 36 of the housing 5 to provide clickability. ing.

In this way, the housing 4 is overlapped and connected to the housing 5 using the connecting screw 37.Next, the blade part 1 of the housing is formed with recesses 38 and 3B' at symmetrical positions of the housing 4 (see Fig. 7). A side portion on the handle side is cut out, and a horizontally elongated hole 39° 40 for protruding the retaining pin 20 and a reciprocating movement guide elongated hole 41, 42 for protruding the engaging pin 17 are formed at the bottom of the recess 3838'. , 38' has a fixed and guide protrusion 4 on the side of the grip side.
3, a fixing hole 44 is formed in the opposite side wall thereof, and a blade block fixing handle 45 is slidably provided on the side of the blade part 1 opposite to the handle and projects from the window hole 46.

The fixed handle 45 has a fixed hook engaging recess 45a at its tip.
A U-shaped groove 45b is formed at the rear end of the both end pieces 45.
c has elasticity, and protrusions 45d are formed on both end pieces 45c so as to be engaged with two positioning grooves (not shown) in the housing 4.5.

When the housings 4 and 5 are connected, the drive unit 16
The tip of the lever 18 is located in the gap between the bottoms of the recesses 3B and 3B', and the retaining pin 20 is located in the horizontally elongated hole 39.4.
0 protrudes, and the engagement pin 17 is guided by the elongated holes 41 and 42.

The blade block 7 has a recess 38, as shown in FIGS. 6 and 7.
A fixed blade 48 is heat-sealed and fixed to one side of the blade frame 47, and a movable blade 50 with a heat-sealed drive element 49 is stacked on the fixed blade 48 and connected to the square pin of one drive element 49. The fixed blade has a long hole that allows it to slide freely.
A presser spring 52 is supported by a shaft 51 provided on the other side, and the movable blade 50 is pressed against the fixed blade 48. Long grooves 53 are formed on the outer surface of both ends of the blade frame 47, and a long groove 53 is formed on the other side of the back surface. A pair of forward and backward engagement recesses 53' are formed, one of the long grooves 53 is guided by the protrusions 43 of the recesses 3B and 3B', and the other is guided by the fixing hook 54.

The fixing hook 54 has an 8-shape shape, and its central protruding piece 54a
is inserted through the hole 1a formed at the tip of the blade part 1, and the protrusion 54b of the protruding piece 54a is inserted into the engagement recess 45 of the fixed handle 45.
It is fixed by engaging with a, and both end pieces 54c of the letter 8 are fixed.
is inserted through the hole 44 and enters the long groove 53.

When the blade exposing block 7 is fitted into either of the recesses 3B and 38' in this way, the engaging pin 17 is fitted into the fitting part of the driver 49, and the engaging pin 20 is moved forward and backward of the blade frame. It fits into one of the engagement recesses 53' (determined by the recesses 38 and 38').

The comb 6 has the same width as the blade block 7, and the contact surface at its base forms a recess 6a that escapes the retaining pin 17.20, and a protrusion and a hook portion on both end surfaces have the same width. It has a groove 6b formed therein and can be attached in the same way as the blade block 7.

The operation of this hair cutter will be explained.

That is, FIG. 8 shows an off-lock state, in which the lock button 35 is engaged with the lock hole 23 of the handle 21 and the rear end of the handle 21 is separated from the switch spring 25, so the switch is off, and the handle 21 is in an off-lock state. Therefore, the engagement pin 20 of the lever 18 is at the rear position as shown in FIG. 12, and the cutting edge of the blade block 7 is set back to the rear from the base end of the comb teeth 6c of the comb 6 as shown in FIG. .

FIG. 9 shows that the protrusion 35b of the lock button 35 is connected to the housing boss 3.
6 and slides out of the lock hole 23.

At this time, the bundle 21 is supported in the same state by the return spring 22.

FIG. 10 shows a spring 22 that pushes the middle part of the bundle 21 and returns it.
is compressed, the switch spring 25 is pressed with the tip of the bending piece 21a of the bundle 21 to turn on the switch, and at the same time the motor is driven, the lever 18 rotates around the boss 17 and the engagement pin 20 moves as shown in FIG. position and move the blade block 7 to the third position.
As shown in the figure, the cutting edge moves forward so that it is positioned above the comb teeth 6c (sometimes it protrudes from the comb teeth, and sometimes it is located in the middle of the comb teeth).

Driven by the motor 8, the gear 14 is driven through the pinion 15.
The drive frame 16 is rotated by the gear 14 through the eccentric cam 13, and the engagement pin 17 thereof reciprocates through the guide hole 41, 42 to operate the drive element 50, that is, the movable blade 49.

FIG. 11 shows a state in which the lock button 35 is pushed into the lock hole 24 and the bundle 21 is fixed.

Next, when using it with your left hand, insert the blade block 7 into the recess 38 facing the upper side of the housing as shown in Figure 1.
Also, the comb 6 is attached to the lower recess 38', and when used with the right hand, the bundle 45 is pulled to remove the hook 54, and the comb 6 is attached to the opposite recess.

In either case, the comb 6 is connected to the engagement pin 17 by the escape recess 6a.
．． 20, while the drive element 50 of the force block 7
The fitting part is located at the center, and two engaging recesses 53' are provided at symmetrical positions with respect to the center, so no matter where the blade block 7 and comb 6 are located, the engaging pins 17 and 20 is engaged.

With this structure, this hair cutter has the following effects.

That is, (1) since the switch operation of the blade block 7 is linked to the advance movement operation, the operability is improved and the usability is improved.

(2) If the switch operation is configured so that the motor 8 is activated when the cutting edge of the blade block 7 protrudes beyond the base end of the comb teeth of the comb 6, there is no waste in the operation of the blade block 7. Since the operation is performed by the rear end, the switch spring 25' is provided at an intermediate position (closer to the rotation axis P) of the bundle 21' as shown in FIG. 14 and is brought into contact with the switch contact 26'. It is easy to match the timing of bundle operation and switch operation (errors are less likely to occur), and switch operation can be stabilized without being affected by variations in parts or assembly.

(4) Since the switch spring 25 and the contact 26 are directly attached to the rear end of the motor 8 that has the motor terminal, there is no need for a lead wire between the switch contact 26 and the motor 8, which reduces the number of electrical parts and makes assembly easier. It is easy and the inside of the housing can be simplified.

(5) Since the return spring 22 is provided on the bundle 21, the return operation is easy, and since the lock button 35 is provided,
It can prevent the bundle 21 from being accidentally grabbed and operated when using the comb 6, or from accidentally turning on the switch 25 during transportation, and it can be kept in the on state, making it easy to use when cutting. The operation load of the lock button 35 can be stabilized by the projection 35b.

As described above, the hair cutter of the present invention is equipped with a hair combing member and a blade block, and the switch operation of the blade block is linked to the moving means, making it easy to use the hair combing and trimming operations. This has the effect of improving.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the invention, FIG. 2 is a plan view thereof, and FIG. 3 is a plan view with the blade block advanced.
Fig. 4 is an exploded perspective view of Fig. 1, Fig. 5 is an enlarged sectional view of the drive section, Fig. 6 is a rear view of the blade block, Fig. 7 is a sectional view of the blade part of the housing, and Figs. Figure 11 is a plan view of the drive unit in the operating state, Figures 12 and 13 are plan views of the drive unit in the operating state with the blade block removed, and Figure 14 is a modified example showing the relationship between the bundle and the switch. This is a schematic diagram. 6...Comb, 7...Blade block, 8...
...Motor, 18...Lever 21...
...Bundle, 22...Return spring, 25...
...Switch, 35...Lock button.

Claims (1)

[Scope of Claims] 1. A hair comb member, a blade block stacked on the hair comb member with the cutting edge directed toward the comb tip of the hair comb member, and a blade block stacked on top of the hair comb member with the blade block directed toward the comb tip of the hair comb member. A hair cutter comprising a moving means that moves forward and backward, a motor that operates the blade block, and a switch means that drives the motor in conjunction with the moving means. 2. The hair cutter according to claim 1, wherein the switch means is turned on when the blade block protrudes from the base end of the comb teeth of the hair combing member. 3. The hair cutter according to claim 1 or 2, wherein the moving means is a manual lever, and the switching means is interlocked with the operation of the rear end of the lever. 4. The hair cutter according to claim 1 or 2, wherein the switch means is attached to a rear end of the motor having a motor terminal. 5. The hair cutter according to claim 1 or 2, wherein the moving means is biased to return and is locked at a predetermined operating position.