JPS5818842Y2 - Reciprocating electric shaver sharpening mechanism - Google Patents

Description

[Detailed description of the invention] This invention relates to the sharpening mechanism of a reciprocating electric shaver, in particular, there is no reduction in the amplitude of the sharpening blade, and unnecessary pressure from other sources is not applied to the sliding part. The purpose is to provide a mechanism that will never cause problems.

Conventionally, as shown in FIG.
3 is fixed to the operating knob 54 provided on the outer wall, and this operating knob 5
4, the tip 55 of the vibrating lever 51 is engaged with the movable blade 56 and driven.

In such a device, the operating knob 54 is originally provided so as to be able to slide freely on the outer wall of the main body case 53, so the force received by the vibrating lever 51 causes the operating knob 54, which serves as a support point, to swing from side to side. These devices do not act as a proper support point and generate abnormal sounds, and the amplitude is absorbed by the backlash of the support point, resulting in a decrease in amplitude during pricking, which tends to reduce the pricking effect.

In addition, in the structure shown in FIG. 2, the vibration lever 57 falls toward the main body vibrator 59 due to the upward movement of the operating knob 58, so that the slotted portion 60 at the tip of the vibration lever 57 is attached to the vibrator 59. Since the drive pin 61 and the receiving part 62 of the diagonal blade are connected, the vibration lever 57 is always in elastic contact with the operating knob 58 by the return spring 63 when driven.
For this reason, abnormal heat is generated at the contact portion between the operating knob 58 and the vibrating lever 57, which causes deformation and wear, which causes trouble in the subsequent sharpening mechanism.

This invention is intended to eliminate these drawbacks, and examples will be explained below with reference to the drawings.

Reference numeral 1 denotes a frame fixed to the inner wall of the main body case A. A support pin 2 is erected at the bottom of the frame 1, and the frame is rotatably supported by the support pin 2 on the side of the main case A. support part 3
The fan-shaped edge vibrator 3 having the shape b has a notch 3a and a pair of guide pins 3C arranged side by side at the outer end thereof.

A drive pin 4a is provided upright on the main body vibrator 4 in the notch 3a.
is fitted through the through hole 1a of the frame 1.

Reference numeral 5 denotes a connecting rod, at the bottom of which there is a supporting part 3 for the sharply oscillator 3.
The connecting rod 5 is provided with a long hole 5a that can be fitted and moved, and a tip driving portion 5C with a constricted tip that is guided by the guide pin 3C of the vibrator 3 at the top, and this connecting rod 5 is movable up and down. It is supported on the sharp oscillator 3 as shown in FIG.

In addition, a long hole 5b that is long in the left-right direction is formed in the center of the connecting rod 5. A protrusion 6a of the operating knob 6 is fitted into this long hole 5b, and the connecting rod 5 is moved to an extreme position by vertically moving the operating knob 6. Just by moving up and down on the sled vibrator 3, it swings integrally with the vibrator 3.

The operating knob 6 is provided so as to be vertically movable so that the knob is exposed to the outer wall of the main body case A from the inside.

On the other hand, a fixed blade 7 is fixed from the inside to the ceiling plate 1C of the window frame portion 1b at the upper part of the frame 1, and a movable blade 8 is in contact with the lower surface of the fixed blade 7.

The movable blade 8 has a movable blade holding plate 9 attached to its lower surface,
A pair of guide protrusions 9a protrude from the upper surface of the movable blade holding plate 9, pass through a pair of holes 8a in the movable blade 8, and further extend through the fixed blade 7.
The movable blade 8 is loosely fitted into the guide hole 7a and reaches the elongated hole 1d provided in the ceiling plate 1C of the window frame portion 1b, so that the movable blade 8 can freely slide left and right along the fixed blade 7.

In addition, three conical protrusions 9b provided on the lower surface of the movable blade holding plate 9
A compression spring 10 is compressed between three conical protrusions 1f provided on the floor plate 1e of the frame 1, and brings the movable blade 8 into elastic contact with the fixed blade 7.

Further, an eye-shaped protrusion 9C is formed on the lower surface of the movable blade holding plate 9, and the tip drive portion 5C of the connecting rod 5 is fitted into this white protrusion 9C by moving the operating knob 6 upward. be.

When the main body vibrator 4 vibrates in the sharpening mechanism having the above structure, the sharpening vibrator 3 is moved by the drive pin 4a.
rotates around the support portion 3b, and the connecting rod 5 placed thereon swings integrally with the vibrator 3.

In this state, when the operating knob 6 is pushed upward, the connecting rod 5 does not rotate together with the vibrator 3, but moves upwardly on the vibrator 3, and the tip drive part 5C moves into the position of the movable blade holding plate 9. shaped protrusion 9C
The movable blade 8 is reciprocated from side to side.

Conversely, when the operating knob 6 is pushed down, the tip drive section 5C separates from the eye-shaped protrusion 9C, and the movable blade 8 stops.

According to this invention having the above configuration, the connecting rod 5 that swings integrally is mounted on the edge oscillator 3 that rotates around a point formed on the side of the main body case A so as to be vertically movable. The tip driving portion 5C of the connecting rod 5 is engaged and disengaged by vertically moving the connecting rod 5 with an external operating knob 6. , the part connected to the external operation knob 6 that engages and disengages from the movable blade 8 is separated and independent, and can fulfill its respective roles independently.
The fulcrum of the rotation of the connecting rod 5 that directly drives the movable blade 8 can be set at the support part 3b of the edge oscillator 3, which is a fixed point, suppressing the occurrence of abnormal noise and abnormal vibration caused by wobbling of the fulcrum. In addition, the driving force is reliably transmitted to the movable blade 8, preventing a decrease in the stinging effect caused by a decrease in amplitude, and unnecessary pressure is not applied to the sharp vibrator 3, etc., and the drive source of the main body is It has a simple structure and produces excellent effects without causing unnecessary losses.

[Brief explanation of drawings]

FIGS. 1 and 2 are exploded perspective views of essential parts showing a conventional embodiment, FIG. 3 is an exploded perspective view of essential parts showing an embodiment of the present invention, and FIG. 4 is an assembled front cross-section of essential parts of the same embodiment. It is a diagram. 1...Frame body, 3...Kiwazori oscillator,
3b...Support part, 4...Body vibrator,
5... Connecting rod, 5C... Tip drive section,
6... Operation knob, 7... Fixed blade, 8...
...Movable blade.

Claims (1)

[Scope of utility model registration request] An edge oscillator 3 rotatably supported by a support portion 3b on the side of the main body case A and excited by a main body oscillator 4; It consists of a connecting rod 5 that swings integrally with the vibrator 3, and an operating knob 6 provided on the main body case A to move the connecting rod 5 up and down. 7 and the movable blade 8 in an overlapping state are connected to the tip drive portion 5 of the connecting rod 5.
A sharpening mechanism for a reciprocating electric shaver, characterized in that the movable blade 8 is driven in a locked state when the movable blade 8 is engaged and disengaged from the blade C.