JPH0229283A - Reciprocating type electric razor - Google Patents

Abstract

PURPOSE:To make the move of each portion uniform at the time of right/left movement of an oscillator and suppress the runout to be small at the time of moving to either direction by providing the oscillator on which a driving rod is erected and arms in point symmetrical positions and fixing both ends of each arm to the oscillator. CONSTITUTION:The rotation of the cam shaft 6a of an eccentric cam 6 is transmitted to a drive converting member 7. Due to reciprocating movement in the Y direction, the arms 7b, 7c are oscillated with the installing bosses 8a, 8b of an oscillator 8 as the fulcrums. At the time of moving the oscillator 8 to the right R in the X direction, the cam shaft 6a of a motor 3 pulls one arm 7b, moving the oscillator 8 rightward. At the time of moving same contrarily to the left L, the cam shaft 6a pulls the other arm 7c to move the oscillator 8 leftward. Almost all movement in the Y direction is absorbed by the oscillator 8 itself and at the time of moving the oscillator 8 in the X direction, the pushing force and pulling force of the oscillator 8 is simultaneously generated by both arms 7b, 7c, reducing a load applied to the motor 3.

Description

DETAILED DESCRIPTION OF THE INVENTION H) Industrial Application Field The present invention relates to a reciprocating electric shaver, and relates to the configuration of a drive direction conversion mechanism that converts the rotational motion of a motor into the reciprocating motion of an inner cutter.

(c2) Conventional technology The conventional reciprocating electric shaver is, for example, the Japanese Patent Publication No. 57-445.
As in Publication No. 49, a frame body is integrally fixed to the lower end of a diaphragm having elasticity that hangs down from both sides of the vibrator, and this frame body extends from both sides of the lower end of the imaging plate toward the other diaphragm. The width between the front piece and the rear piece of the diaphragm is made narrower than the width of the diaphragm, and the mounting seat, which is separated from the diaphragm by a predetermined distance, is fixed in a fixed position, and is attached to the output shaft of the motor, and the eccentric shaft is rotated. A motion converting member that receives dynamic motion and transmits only the longitudinal motion of the vibrator to the vibrator is provided only on the lower surface of the vibrator.

In this example, when the eccentric shaft moves the connection part of the elastic arm to 10,000 degrees, it pushes it, and when it moves it to the other direction, it pulls it, so there is an unbalance of force in both cases, that is, the "pull force" causes the pre Although this does not occur, there is a problem in that when a "pushing force" is applied, a pretension occurs due to the deflection of the elastic arm.

e→ Problems to be Solved by the Invention The problems to be solved by the present invention are to equalize the movement of each part when the transducer is moved from side to side, and to reduce the eccentricity of Tanabata so that the movement of each part can be suppressed to a small amount when moving in any direction. The purpose is to improve the structure of the power transmission part from the cam to the inner cutter.

2) Means for solving the problem A vibrator with a driving rod erected by extending thin-walled leg pieces on both sides and having an inner cutter stand attached to the upper surface, and a connection into which the camshaft of the eccentric cam is inserted. Has a boss in the center.

Elastic arms are arranged around the vibrator at point-symmetrical positions, and both ends of the arms are fixed to the vibrator.

(e) Operation The pair of arms provided around the connecting boss receive forces in opposite directions, that is, while one arm 4 receives a pulling force, the other arm receives a "pushing" force. "pushing force" applied to each arm, or vice versa
The pre-force caused by the force is compensated by the "pull force" of the other arm.

(f) Example Hereinafter, the reciprocating electric stove of the present invention will be described in detail with reference to an example of the drawings.

In the exploded perspective view of the main parts in Figure 2, (1a) and (lb) are a pair of half-split cases constituting the main case [1] that can be overlapped and tightened with screws (2m) and (2b), and (3) is A small DC motor is housed in the main body case fil while being fixed to the motor mounting plate (4) with screws (5m) (5b), and (6) is attached to the drive shaft of the motor (3). The fitted eccentric cam (7) has a connecting boss (7a) in the center that is fitted to the cam shaft (6m) of the eccentric cam (6),
An arm (7b) having elasticity in an abbreviated shape around it (
7c) arranged at point-symmetrical positions, a drive conversion member (8
) is a mounting boss (8a) that fits into the fitting portion (7d) (7e) formed at one end of the arms (7b) (7c).
(ab) is placed on the bottom surface, and the drive rod (8C) is placed on the top surface.
(9) is a dust-proof plate α made of a material such as sponge. coil spring all
is inserted into the lever, and the drive rod (
8C) and insert it into the E ring! An inner blade mount made of synthetic resin is held by 17J to prevent removal, and is always urged upward by the elastic restoring force of the coil spring r111 (13 has a large number of small blades planted in parallel). Narushi,
The inner cutter body is removably engaged and fixed to the inner cutter mounting base (9), ■ is an outer cutter made of nickel electroforming and has a large number of hair introduction holes, and a9 is the outer cutter a4 bent into an arch shape. An outer cutter frame made of aluminum die-cast, which is removably attached to the upper opening (15 m) of the outer cutter frame, and is mounted and held with a removable I/c on the upper part of the main body case tl.
The outer cutter holder is attached to the outer cutter frame tis and attached to the outer cutter frame tis together with the outer cutter I, and serves as a handle when removing the outer cutter I from the outer cutter frame (151).

The motor (3) is mounted on the inner surface of the half case (1b).
) Buffer members (171), (17b), and (t7c) are pasted with adhesive or the like to absorb noise caused by vibrations of the retractor +81.

In the reciprocating electric stove 9 having the above configuration, the rotational motion of the cam shaft (6m) of the eccentric cam (6) is transmitted to the drive conversion member t71. In Figure 1, by reciprocating movement in the X direction at
)) The arms (7b) and (7c) swing around the fulcrum.

IIi mover (When the 8 vessels do not move to the right in the When moving to the left υ, the camshaft (6m) pulls the other arm (7c), so the vibrator (8) moves to the left.The eccentric camshaft C6a>K'' moves in the JAY direction in this way. is the arm (7
b) (7c) Absorbed without bending in that direction,
The transducer (8) itself absorbs most of this movement in the X direction, and if the transducer (81) moves in the X direction, the transducer (
8) The pushing force and the pulling force are both arms (7b) (7c
) occurs at the same time, and the load applied to the motor [31] is reduced.

Figure 3, Figure 3, shows a front view and a bottom view of another embodiment of the vibrator corresponding to Figures W11, ■ and ■. In the same figure, the cam shaft (6 m ) A drive conversion member comprising a connecting boss (27 heat) that is fitted into a connecting boss (27 heat), and around which elastic arms (27b) and (27c) having an abbreviated shape are arranged in point-symmetrical positions. Both arms (2
7b) One end of (27C) is fixed together, and a drive rod (28c) is erected on the upper surface, and thin leg pieces (28c) are installed on both sides.
The ends of the arms (27b) and (27c) are formed by bending the arms (28d) and (28e) into a U-shape.
It is integrally formed on the inner wall of the hanging portion of the leg piece (2Eld) (28e). Drive conversion member (2) having such a configuration
) is similar to the embodiment shown in FIG.
The reciprocating motion in the Y direction is transmitted to the arm (27b) with the mounting boss (28m) (28b) of the vibrator □□□ as the fulcrum.
) (27c) is absorbed by the swinging of motor 1.
3) camshaft (6mm) is on either arm (27g+
) (27b) in the X direction by alternately pulling
Performs reciprocating motion in the direction → R direction. Therefore, for movement in the X direction, the forces pushing and pulling the vibrator (to) are both
7b) (27C), the load on the motor (3) is also reduced.

(G) Effects of the Invention As described above, the present invention comprises a vibrator having thin leg pieces extending from both sides and a driving rod erected on the upper surface to which an inner cutter base is attached, and an eccentric cam. By having a connecting boss in the center into which the camshaft is inserted, elastic arms are arranged around the connecting boss in point-symmetrical positions, and drive converting members are provided to fix both ends of the arms to the vibrator. υ, the frictional resistance between the camshaft and the connecting boss is reduced, and the left and right movement is complementarily stabilized by applying different forces to both arms, allowing the camera element to be driven with less precipitation. .

[Brief explanation of the drawing]

Figure 1 (A) ■ is a front view and bottom view showing the vibrator adopted in the reciprocating electric shaver of the present invention, Figure 2 is an exploded perspective view of the main parts of the electric shaver, and I! Figure 3 Prisoner ■ is Figure 1 (A) (
FIG. 7 is a front view and a bottom view of another embodiment corresponding to E9. (8d) (86) (28d) (28e)---[piece, (
9)...Inner cutter stand, (8c) (28c)...Drive rod, (Fan...Photographer, (6)...Eccentric cam, (
6a)...Camshaft, (7)...Connection boss,
(7b) (7c)...Arm, (7)...Drive conversion member.

Claims (1)

[Claims] (1) A vibrator with thin leg pieces extending from both sides and a drive rod with an inner cutter stand attached to the top surface, and a connecting boss in the center into which the camshaft of the eccentric cam is inserted, and the surrounding area. A reciprocating electric shaver in which an elastic arm is disposed at a point symmetrical position, and both ends of the arm are fixed to the vibrator.