JPS5918075B2 - electric hair clipper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric clipper that converts the rotary motion of a motor into reciprocating motion to drive operating blades, and that can freely perform normal clipper cutting and combing. It is something.

With conventional electric clippers of this type, the entire blade block had to be replaced when switching from the normal clipper cutting state to the combing state, which required time and effort to switch the cutting state, and the need for a replacement blade block. There was also the issue of careful storage.

Furthermore, a conventional power-driven clipper in which the cutting depth is changed by moving the fixed blade back and forth in the direction of the cutting edge of the movable blade has been disclosed, for example, in Japanese Patent Publication No. 42-15642. In the conventional example, since tooth grooves of the same depth are formed on the fixed blade, it is not possible to switch between the clipper cutting state and the combing state.

The present invention has been provided in view of the above-mentioned points, and it is possible to freely switch between clipper mowing and combing by sliding the operating blade in sliding contact with the fixed blade in the front and back direction.
Moreover, by configuring the operating blade to move back and forth together with the drive unit, the connection structure between the operating blade and the drive unit is simplified, and the electric hair clipper can reliably and stably drive the operating blade back and forth in the left and right direction. The purpose is to

An embodiment of the present invention will be described in detail below with reference to the drawings.

1 in the figure is a cover, and this cover 1 is the upper cover 27.
The lower cover 28 is divided into two parts, and an opening 33 for the switch part 2 is formed at the joint of the two on one side.

A spring holding protrusion 29 that holds a compression coil spring 49 for pressing the drive unit 12 and preventing vibration during driving is provided on the inner lower surface of the upper cover 21 and protrudes obliquely downward. An upper guide plate 34 is erected adjacent to and directed downward from the lower surface of the upper cover 27.

Two circular protrusions 30 are provided at the center of the inner upper surface of the lower cover 28.
are protruded adjacent to each other, and a slide portion 31 is provided diagonally upward in front of the slide portions.

A stopper portion 32 is erected upward at the end of the slide portion 31 near the opening 33 for the switch portion 2.

A lower guide plate 35 is erected upward adjacent to the opening 33 of the lower cover 28, and the upper guide plate 34 and the lower guide plate 35 form a substantially Z-shaped guide groove 7. .

The guide grooves 7 are each divided into a combing blade switch-on groove 4 close to the operating blade 9, a switch-on vertical groove 5, and a cutting blade switch-on groove 6 far from the operating blade 9.

The switch section 2 is installed upright on the side of the motor mounting section 36, and a through hole 3 for a lock button 3 is provided in the center of the switch section 2.
7 is drilled.

Three grooves 38 are provided in the front and rear in the center of the motor mounting portion 36, and the protrusion support rod 39 surrounded by the grooves 38 is provided with elasticity.

A protrusion holding part 40 is protruded from the center of the protrusion support rod 39 so as to face each other, and the lower cover 280 and the protrusion 30 are fitted into the groove 38 in the middle to be slidable back and forth. , the protrusion support rod 39 is bent and the protrusion holding part 40 is attached to the side surface of the protrusion 30.
The motor mounting portion 36 can be slid in three stages by making elastic contact with the motor mounting portion 36.

Therefore, the switch section 2, which is integrally provided upright on the motor mounting section 36, also slides in three stages.

At the rear end of the motor mounting portion 36, a contact holding groove 41 having a substantially square shape in plan is recessed, into which a contact 42 having a substantially square shape in plan is fitted.

The lock button 3 is provided in the switch part 20 through hole 37 so that it can be slidably operated from the outside up and down.
A protrusion 8 protrudes from the back surface of the cover 1 toward the inside of the cover 1, and the protrusion 8 has a ■-shaped groove 26 facing upward so that the free end of the lever 24 for sliding the drive unit can be removably inserted therein.
It is recessed.

A spring receiving groove 45 for receiving a compression coil spring 44 is provided above the L-shaped groove 26, so that the compression coil spring 44 always pushes the lock button 3 downward.

The drive unit 12 is composed of a driver element 13 and a driver frame 14, and the driver element 13 and the driver frame 14 are integrated with a screw 15.

The operating blade drive section 16 at the tip of the driver 13 is supported by two parallel springs 17, and is configured to reciprocate the operating blade 9 in accordance with the movement of the eccentric pin 18.

A substantially cylindrical spring seat 21 with an open upper end is provided on the upper surface of the driver 13.
is provided, into which the end of a compression coil spring 49 for pressing the drive section 12 is inserted.

The lower surface of the driver frame 14 has two rows of parallel slide grooves 19 recessed therein, and protrusions 20 projecting downward.

The motor 22 is fixed on a motor mounting part 36,
It moves back and forth in accordance with the movement of the switch section 2.

An eccentric pin 18 is press-fitted into the rotating shaft 23 of the motor 220, and as the motor 220 rotates, its tip portion draws a circular trajectory.

One end of the drive unit sliding lever 24 is rotatably supported on the lower cover 28, and the protrusion 20 of the drive unit 12 is located in the center.
A long hole 25 is formed for inserting the lock button 3 at the other end.
It is designed to be removably inserted into the zero-shaped groove 26, and has a spring receiving protrusion 46 protruding near the elongated hole 25, so that it is always pushed downward by a compression coil spring 47. There is.

At the rear of the motor 22, a contact section 48 made of a printed circuit board is fixed to the lower cover 28, and is in slidable elastic contact with a contact point 42 provided on the motor mounting section 36.

Thus, the switch part 2 is connected to the opening 33 on one side of the cover 1.
The protruding part 8 of the lock button 3 is slidably inserted into the guide groove 7, and the protruding part 80 is slidably inserted back and forth into the guide groove 26.
The free end of the drive unit sliding lever 24 is removably inserted into the drive unit, and the protrusion 20 of the drive unit 12 is inserted into the elongated hole 25 of the drive unit sliding lever 24.

As shown in FIG. 5, the lock button 3 is always pressed down by the compression coil spring 44, so unless the operator pushes the lock button 3 upward as shown in FIGS. Even if pushed forward, the protruding part 8 of the lock button 3 comes into contact with the side wall 11 of the guide groove 7 and the switch part 2 cannot be moved forward, and when the operator tries to move the switch part 2 forward, the switch part 2 is always locked. The switch part 2 must be moved forward after the button 3 is raised.

FIG. 7 shows a case where the switch section 2 is to be moved back.

As shown in FIGS. and d, a combing blade switch-on groove 4 is provided at the rear of the lower end of the switch-on vertical groove 5 in communication with the lock button 3, and the lock button 3 is always pressed downward by a compression coil spring 44. The protrusion 8 of the lock button 3
The protruding portion 8 can be inserted into the comb blade switch-on groove 4 by sliding the switch portion 2 backward without contacting the side wall 11.

Next, to explain the movement of the drive unit 12, the lock button 3
Fit the free end of the lever 24 for sliding the drive unit into the groove 26 of the protrusion 8, and push the lock button 3 along with the lever 24 for sliding the drive unit up to the top along the switch-on vertical groove 5, and leave it as it is. The switch part 2 is slid forward together with the lock button 3.

As a result, the protrusion 8 of the lock button 3 enters the cut blade switch-on groove 6, and as shown in FIGS. The sliding lever 24 is part of the stopper 3 of the sliding part 31
2, rotate forward and move the drive unit sliding lever 24.
The driving part 12, which is interlocked with the blade, slides forward along the sliding part 31, and most of the working blade 9 overlaps the fixed blade 10, resulting in a cutting blade state as shown in FIG. 10a.

That is, in this state, the positional relationship is such that the tip end 55 of the operating blade 9 faces both the shallow groove 53 and the deep groove 54 of the fixed blade 10.

At this time, the contacts 42 integrally formed in the switch part 2 move forward and come into contact with the contact part 48, and the motor 22 rotates to operate the actuating blade 9, but the motor rotates 220 times. Eccentric pin 18 press-fitted into shaft 23
The parallel spring 17 is deflected in the left-right direction by the left-right movement stroke of the blade, causing the actuating blade drive unit 16 to vibrate back and forth in the left and right directions, and in conjunction with this, the actuating blade 9 slides left and right. The movement of the pin 18 in the vertical direction causes the driving unit flexible arm 52 to bend vertically, and the parallel spring 17 and the driving unit flexible arm 52
The rotational movement of the motor 22 can be changed into the reciprocating movement of the actuating blade 9 by the action of the actuating blade 9.

By the way, since the drive section 12 is simply placed so as to be able to slide freely on the slide section 31 of the lower cover 28, the compression coil spring 49 is used to prevent the drive section 12 from rattling up and down due to the bending of the drive section bending arm 52. This is to press the drive section 12 downward.

The state of the switch section 2 in this case is as shown in FIG. 9a.

Conversely, FIG. 7 shows a state in which the protrusion 8 of the lock button 3 remains inserted into the switch-off vertical groove 5.

As shown in the figure, the free end of the drive unit sliding lever 24 has come off the protrusion 801-shaped groove 26 of the lock button 3, and the fixed blade 1
The blade is in a combing blade state as shown in FIG. 10, in which only the tip of the working blade 9 overlaps the blade 9.

That is, in this state, the positional relationship is such that the cutting edge tip 55 of the operating blade 9 faces only the deep groove 54 of the fixed blade 10.

When the switch part 12 is moved backward in this state, only the protruding part 8 of the lock button 3 enters the comb blade switch-on horizontal groove 4, as shown in FIG. 7d, and the contact formed integrally with the switch part 2 42 also moves back and comes into contact with the contact portion 48, the motor 22 rotates, and the actuating blade 9 operates in a combing blade state as shown in FIG. 10.

At this time, the state of the switch section 2 is as shown in FIG. 9C.

Here, in order to operate in the cutting blade state, you must raise the lock button 3 and then move the switch forward, whereas in order to operate in the combing blade state, you do not operate the lock button 3 (and the switch part 2 The reason for this is that in the cutting blade state, there is a large overlap between the fixed blade 10 and the operating blade 9 (which would be dangerous if operated carelessly), whereas in the combing blade state, the fixed blade 10 overlaps the operating blade 9. There is little overlap between the blade 10 and the operating blade 9 (this is because there is no danger even if the blade is activated carelessly).

As described above, the present invention forms a shallow groove and a deep groove on the front edge of the fixed blade, and a position where the tip of the operating blade faces the shallow groove and the deep groove, and a position where the tip of the operating blade faces only the deep groove. The operating blade is arranged so that the operating blade reciprocates on the fixed blade between the two positions, so just by switching the left and right reciprocating sliding position of the operating blade back and forth, you can perform normal clipper cutting (cutting).
It has the effect of being able to switch between the combing state and the combing state, allowing the switching work to be performed easily and freely.
In addition, the operating blade is connected to the drive section that is arranged inside the cover so that it can slide back and forth, and the operating blade slides in the front and back direction together with the drive section and is reciprocated in the left and right direction by the output of the drive section. The drive mechanism for moving the blade back and forth only needs to move the drive unit back and forth (it has the effect of simplifying the configuration of the drive mechanism, and the left and right reciprocating drive of the operating blade by the output of the drive unit is stable and always at the specified level). This has the effect that the actuating blade can be reciprocated left and right with the actuation force of .

In addition, in the present invention, ends of compression coil springs are attached to the upper surface of the drive unit and the lower surface of the cover, respectively, for converting the rotational motion of the motor into a reciprocating motion in the left and right direction via an eccentric pin.
Since the drive unit is pressed by a compression coil spring, even though the drive unit is installed inside the cover so that it can slide freely in the front and rear directions, it is necessary to absorb the vertical movement of the eccentric pin when the motor rotates. It is possible to eliminate vertical rattling of the drive unit due to deflection of the drive unit flexible arm, and there is an effect that vibration and noise of the electric hair clipper can be prevented.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of one embodiment of the present invention, Fig. 2 is an exploded perspective view of one embodiment of the above, Fig. 3 is an exploded perspective view of one of the embodiments of the above, and Fig. 4 is an exploded perspective view of one of the embodiments of the same. A perspective view of the embodiment, FIG. 5 is a partially enlarged exploded perspective view of one embodiment of the above, FIG. 6 is a partially enlarged perspective view of one of the embodiments of the above, and FIGS. 7 a to d show the lock button and drive of the above. Fig. 8 a + b and c are explanatory diagrams of the positional relationship between part of the stopper and the lever for sliding the drive part; Fig. 9 a, b and c are diagrams showing the switch part and the lock button. 10a and 10b are explanatory diagrams of the positional relationship between the fixed blade and the operating blade, FIG. 11 is a perspective view of an embodiment of the driver frame, and FIG. 12 is the same as the above. FIG. 13 is an exploded perspective view of the contact part of the same as above, 1 is a cover, 9 is an operating blade, 10 is a fixed blade, 12
is a drive unit, 18 is an eccentric pin, 22 is a motor, 49 is a compression coil spring, 51 is a lower surface, 53 is a shallow groove, 54 is a deep groove,
55 is the tip of the cutting edge.

Claims (1)

[Claims] 1. A drive unit that converts the rotary motion of the motor into reciprocating motion in the left and right directions via an eccentric pin is installed inside the cover so that it can slide back and forth, and a shallow groove and a deep groove are formed on the front edge of the fixed blade. The working blade is arranged so that the working blade reciprocates over the fixed blade at a position where the working blade tip faces the shallow groove and the deep groove and a position where the working blade tip faces only the deep groove, and this working blade is connected to the drive unit so that it slides in the front-rear direction with the drive unit and is reciprocated in the left-right direction by the output of the drive unit, and the ends of compression coil springs are connected to the top surface of the drive unit and the bottom surface of the cover, respectively. An electric hair clipper characterized in that the drive unit is pressed by the compression coil spring.