JPS594615Y2 - Blade drive mechanism of dry razor machine - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a blade drive mechanism for a dry razor machine.

Conventionally, in this type of razor machine, as shown in FIG. Since both ends of the child 13 are contracted and slid as guides between the walls of the main body case, the guide surface 30 is heavily worn and has poor durability, and when the amount of wear increases, noise and vibrations are induced.

Furthermore, since there is a sliding surface, friction loss is large, and battery life is short due to high current consumption, making it uneconomical.

Since the vibrator 13 engages with the inner cutter 1B via the inner cutter receiver 21, it is impossible for the inner cutter to move in accordance with the movement of the vibrator, and depending on the position of the inner cutter, the inner cutter spring The inner blade pressure energized by 31 changes, and a constant pressure contact force cannot be obtained at all times, making it impossible to obtain stable sharpness.

This invention eliminates all of the above-mentioned drawbacks.The vibrator that reciprocates the movable blade reciprocates without sliding on the fixed wall of the case, thereby preventing friction loss and reducing current consumption and noise. This provides an excellent dry razor machine with reduced vibration.

Hereinafter, the present invention will be explained in more detail based on examples.

FIG. 1 is a cross-sectional view of an embodiment of the present invention, showing a cross-sectional view at the A-A position of the plan view of the drive unit shown in FIG.
The figure shows a plan view of the drive unit of the present invention, and FIG. 3 shows a main sectional view at the BB position in FIG. 2.

This embodiment is a mechanism in which the main blade of a razor machine is configured as a movable blade. First, to describe the configuration, 1 is a motor, an eccentric joint 3 is fixed to a motor shaft 2, and the motor 1 is connected to a main body case 4. It is fixed to the more protruding intermediate wall 5.

At one end 7, 7 of the pair of connecting members 6, 6, a retaining hole 9 is provided as shown in FIG. A guide portion 10 is provided in order to make the attachment sufficiently stable.

The other end 11 of the connecting member 6 is provided with a shaft protrusion 12, and is engaged with a connecting member engaging hole 15 provided in an end portion 14, 14 of the vibrator 13 in a rotational pair.

In this way, the vibrator 13 and the connecting member 6.degree. 6 constitute a vibrator link mechanism.

At this time, in order to sufficiently maintain the connection between the connecting member 6 and the vibrator 13, a spring 16, which is a spring member, is interposed between the intermediate wall 5, which is a fixed wall within the main body case.

The spring 16 contributes to the vertical movement of the vibrator 13.

The vibrator 13 has a vibration pin 19 disposed in the center part 17 that engages with the inner cutter 18, and the inner cutter tube 21 of the center part 20 of the inner cutter 1B.
engage with.

Also, on the lower surface 22 of the vibrator 13, there is the eccentric joint 3 described above.
An eccentric joint engagement hole 24 that is slidably engaged with the outer circumferential surface 23 of the main body case 4 is provided and protrudes from an opening 26 in the upper wall 25 of the main body case 4.

The outer cutter 32 that is in sliding contact with the inner cutter 18 is locked to an outer cutter frame 27, and the outer cutter frame 27 is positioned on the main body case 4.

The shape of the inner cutter tube 21 is shown in FIG. 5, and this inner cutter tube 21 is held by an inner cutter pin 27 disposed on the inner cutter 1B, and an engagement hole 2B for the vibration pin 19 is formed in the center. Its tip 29
has been expanded to Suehiro.

Next, regarding the operation, the rotation of the motor 1 is eccentrically moved at the eccentric joint 3, and the eccentricity is transmitted to the vibrator 13, so that the vibrator 13 reciprocates.

At this time, the movement of the vibrator 13 is guided by the connecting members 6, 6.

The connecting member 6゜6, whose one end is pivotally supported, rotates on the circumference around the pivot shaft 8, 8' with the length of the connecting member 6, 6 as a radius, and the end 14゜14 of the vibrator is rotated around the pivot shaft 8, 8'. ' transmits the movement of the connecting members 6,6.

At this time, the pivot shafts 8, 8 are provided symmetrically with respect to the center line with respect to the eccentric joint 3, and the end portion 14° 1 of the vibrator is
4' rotates on the aforementioned circumference, the connecting member 6.degree. 6 and the vibrating pin 19, which is arranged centrally in the engagement part of the end 14, 14' of the vibrator, undergo a linear movement.

However, with respect to the rotation of the end portion 14, 14' of the vibrator, the vibrating pin 19 undergoes some rotation.

Further, each of the retaining parts rotates due to the fitting between the shaft and the shaft hole, that is, the rotation pair.

A spring 16 is applied to the ends 14 and 14' of the vibrator, and presses the inner cutter 18 to the outer cutter 32. As these two springs 16 and 16 move in an oscillating manner, the spring end There is no sliding movement, and only a force is applied in the moving direction when the vibrator 13 moves from the neutral position.

The inner cutter 1B is attached to the vibrator 13 via the inner cutter tube 21, and the linear motion of the vibration pin 19 of the vibrator 13 is transmitted to the inner cutter 1B.

In response to the pressure of the outer cutter 32, the inner cutter 18 that follows the outer cutter 32 is pressed, and the amount of movement of the inner cutter 18 when it descends is absorbed by the spring 16.

Therefore, when the inner cutter moves up and down, the vibrator 13 also moves.

A guide portion 1o of the connecting member is provided in the engagement hole 9 of the pivot shaft of the connecting member 6 to allow the vibration pin 19 to move only up and down against the inclination of the vibrator 13 that occurs during the movement.

As another embodiment, the same effect as that of the present invention can be obtained by changing the protruding position of the connecting member ends 14, 14' in the configuration shown in FIG.

The same numbers as in FIGS. 1 to 3 indicate the same members and locations.

Furthermore, although the inner cutter tube shown in FIG. 5 was described in this embodiment,
It may be directly engaged with the inner cutter without attaching the inner cutter tube.

Furthermore, spring 16. As a development of this embodiment described with two i6s, there is also a configuration in which one spring 16 is placed in the center of the vibrator 13 to satisfy the needs of two springs, as shown in FIG.

Note that any other type of vibrator may be used as long as the vibrator itself moves up and down.

As described above, the effects of the present invention are that the linear parallel motion of the vibrator is directly transmitted to the inner cutter, and there is no sliding contact with the fixed wall of the main body case, so there is little transmission loss, and the inner cutter amplitude It moves stably without any damping phenomenon.

Further, the spring that biases the vibrator applies pressure to the inner cutter with the outer cutter, causing the inner cutter to reciprocate with constant pressure.

Further, the spring moves at this time because the spring itself has no sliding surface and is locked at both ends, making a rocking motion.

Therefore, when the inner cutter is moved from the neutral position to the left or right, a force acts to assist in the movement direction, contributing to smooth inner cutter movement and reducing current consumption.

In addition, as shown in Figure 1, when the inner and outer cutters are set, there is no sliding contact between the vibrator and the main body case, which naturally causes no friction, resulting in lower current consumption, better current retention, longer battery life, and economic efficiency. It is true.

Also, since there is no sliding contact, a comfortable shaving experience is achieved with no sliding noise, quiet noise, and no vibration.

As for the configuration, each connecting part is a rotating pair made of a combination of a perfect circle and a cylinder, so the pressure F (kg) is applied to the outer circumferential surface of 5 m.
Contact pressure W (kg/mm2) due to dispersion in m2
= F (kg/S mm2), which is very small,
Durability can be increased.

Also, in terms of manufacturing, since it is a perfect circle and a cylinder, it is easy to produce in terms of dimensions, can be easily assembled, and can be manufactured at low cost.

With the present invention described above, it is possible to present an excellent dry razor machine that has never existed before.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of an embodiment of the present invention, showing a cross-sectional view at the A-A position of the plan view of the drive unit shown in FIG.
The figure shows a plan view of the drive section of the present invention, and FIG. 3 shows a main sectional view taken along the line BB in FIG. 2. FIG. 4 shows another embodiment in which the engagement position of the connecting member is changed, FIG. 5 shows an enlarged view of the inner blade receiver, and FIG. 6 shows the configuration of the spring in another embodiment. This is a diagram where the inner cutter is not attached. FIG. 7 is a longitudinal sectional view showing a conventional structure. 1...
... Motor 2 ... Motor shaft, 3.
...Eccentric join 1~. 4...Main body case, 5...Intermediate wall (disposed in the main body case), 6.
...Connection member, 7...One end of the connection member (
Pivot side), 8, 8'... Pivot shaft, 9...
- Pivot shaft engagement hole (located in the connecting member), 101099,
. Guide portion of the connecting member, 11...Other end of the connecting member (
(maintaining side with the vibrator), 12... shaft protrusion (disposed on the connecting member), 13... vibrator, 14.14'.
... End of vibrator, 15 ... Connection member engagement hole, 16 ... Spring, 17 ...
Center part of the vibrator, 18... Inner blade, 19...
... Vibration pin, 20... Central part of inner blade, 21.
...Inner blade holder, 22...Bottom surface of vibrator, 2
3...Outer peripheral surface of eccentric joint, 24...
・・Eccentric joint engagement hole (located on the vibrator), 25・・
...Top wall (located in the main body case), 26...
・Opening (located on the top wall), 27... Inner blade pin, 2B... Vibration pin engagement hole (located in the inner blade holder)
, 29... Tip of inner blade holder, 30...
Vibrator guide surface (conventional), 31...inner blade spring (conventional), 32...outer blade.

Claims (1)

[Claim for Utility Model Registration] In a dry razor machine that has a movable blade that slides in pressure contact with a fixed blade, the vibrator engages with an eccentric joint formed on the motor shaft at its lower end, and the vibrator at its upper end engages with an eccentric joint formed on the motor shaft. The movable blade is engaged with the movable blade disposed above to cause it to reciprocate, and a spring member disposed on a fixed wall within the main body case holds and presses the vibrator disposed above the movable blade toward the movable blade. The blade is in pressure contact with the fixed blade, and the spring member is deformed so that the vibrator can move up and down, and one end of the connecting member is provided at each of the left and right ends of the vibrator sandwiching the eccentric joint. The other end of each connecting member is pivotally supported on a pivot shaft provided on a fixed wall within the main body case to constitute a vibrator link mechanism, and the connecting member and the pivot shaft are movable up and down. A blade drive mechanism of a dry razor machine characterized by being formed as follows.