JPS6226054Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of an electric shaver equipped with a shaving mechanism.

This type of electric shaver generally has a structure in which a holder with an edge mechanism moves in and out horizontally through a window formed in the main body case. Because it is located in such a way as to divide the area, unnecessary space is created, and the access/exit operation structure is inevitably complicated.

Therefore, in recent years, for example, the edge mechanism has been made into a unit, and this unit is pivoted to a window formed on the wall of the main body case, and the storage space has been improved by configuring it so that it can be rotated between the use state and the storage state. A number of proposals have been made to improve efficiency.

Details are described in, for example, British Patent No. 827768, U.S. Patent No. 3763558, U.S. Patent No. 3844035, and Swiss Patent No. 480922. is rotatably supported by inserting it into a support hole formed in the side wall of the window of the main body case, so when installing it, it is necessary to deform the hole or one side of the pivot more than necessary, or separate the pivot. It is difficult to assemble as it has to be inserted into the body from the hole side to the unit side.

In addition, when forming a support hole in the window portion, it is necessary to re-drill the hole after molding the main body case or to use a complicated molding die, which is disadvantageous in terms of cost.

This idea was made in view of these circumstances, and both ends of the edge mechanism are driven to rotate between the protruding position and the storage position through a window formed on the wall of the main body case. In the electric shaver, a groove is formed on the inner wall at both ends on the window side, and a groove is open on one side and sealed on the other side, and hinge projections are provided on both end surfaces of the shaving mechanism. Insert it from one side of the groove and connect the edge operation button installed on the main body case side with the edge mechanism side to apply elasticity in the inner and outer directions of the body case that rotationally drives the edge mechanism. By using a structure in which the holder drive member has a structure that presses this edge mechanism toward the other side of the groove, the conventional support hole becomes a groove shape with one side open, simplifying the molding of the support part. This also makes it easier to assemble the trimming mechanism and to replace it for maintenance purposes.

An embodiment of this invention will be described below with reference to the drawings, taking a reciprocating electric shaver as an example.

FIG. 1 is a cutaway side view showing an example of a reciprocating electric shaver according to this invention. In the figure, 1 is a main body case housing a motor 2 and a battery (not shown); In the fitted outer cutter holder, the inner cutter body 6 held by the inner cutter holder 5 is in contact with the inner surface of the outer cutter 4 held by the outer cutter holder 3. Reference numeral 7 denotes a vibrator connected to the inner blade holder 5, and this vibrator 7 transmits the rotational force of the motor 2 through an eccentric cam 9 fixed to the rotating shaft 8 of the motor 2, and transmits the rotational force of the motor 2 to the inner blade holder 5. The blade body 6 is made to vibrate.

Reference numeral 10 denotes a sharpening mechanism driven by the vibrator 7, and as shown in FIG.
A hinge protrusion 12 is provided protrudingly on the inner wall of the window 13 formed in the main body case 1, and one side, specifically, the inner side of the main body case 1 is open, and the other side, that is, the inner wall of the main body case 1 is open. 1 is formed with a groove 24 sealed on the outer side of the edge mechanism 10.
is temporarily assembled into a pivot shape by inserting the hinge protrusion 12 into the groove 24 from one open side. 14 is a switch button attached to the outer surface of the main body case 1, and this switch button 14 has the following functions:
Holder driving member 26 with elastic arm pieces 25, 25
are connected, and each tip 25a of the arm piece 25 is engaged with a recess 30 (FIGS. 3a and 3b) of the holder 11. When the switch button 14 is operated, each elastic arm piece 25 is elastically deformed as shown in FIG. 3a, and the holder 11 starts rotating around the hinge protrusion 12, and as shown in FIG. It is designed to be held in a protruding position.

The feature of this invention lies here, and the relationship between the hinge protrusion 12 and the groove 24, which were temporarily assembled in a pivot shape, is as follows.
The elastic force of 6 presses the hinge protrusion 12 to the other side of the groove 24, which not only simplifies assembly but also prevents unnecessary falling off. It is possible to absorb variations in dimensions, furthermore, during use, rattling noise is absorbed and noise is suppressed, and even if unnecessary external force is applied to the tip of the sharpening mechanism, this can be alleviated.

A fixed blade 15 for edge cutting is fixed to the lower surface of the holder 11.
A movable blade 16 is pressed against the lower surface of the movable blade 16 by a compression spring 17. An engagement piece 19 that is engaged with an engagement recess 18 formed in the vibrator 7 is protruded from the rear end of the movable blade 16, and is driven to vibrate in the direction of arrow a by the vibrator 7. be done. 20 is the holder 11
Each pin 20 is fitted into a guide slot 21 formed in the movable blade 16 to guide the vibration of the movable blade 16.

Either the outer surface of the holder 11 along the vibration direction of the movable blade or the corresponding inner surface of the window 13, for example, the outer surface of the holder 11 has triangularly protruding surfaces 22, 22 as shown in FIG. The other side, that is, the inner surface of the window portion 13, is composed of triangularly recessed surfaces 23, 23. The inclination angle θ ₂ formed by the concave surfaces 23, 23 is the same as that of the protruding surfaces 22,
22 is formed at a wider angle than the inclination angle θ ₁ , and the apex P of the protruding surfaces 22, 22 is at the concave surface 2.
The elastic arm pieces 25, 25 of the holder driving member 26 are pressed against the corresponding apexes P' of the holder drive member 26 by the elastic force of the elastic arms 25, 25 of the holder driving member 26. This pressure contact means is an elastic arm piece 2.
5, for example, as shown in FIG. 5, a coil spring 27 is attached to the hinge protrusion 12, one end of this spring 27 is stopped on the holder 11, the other end is stopped on the main body case 1 side, and this spring 27 is It may also be one that utilizes the spring force of. In addition, in Figure 2, 28
29 is a rotating roller attached to the pin 20, and 29 is a spring bearing member that supports the compression spring 17.

In the above configuration, as the movable blade 16 vibrates, the holder 11 of the sharpening mechanism 10 also tends to vibrate laterally in the same direction, but the apex P of the triangular protruding surfaces 22, 22 of the holder 11 is Since the holder 11 is pressed against the tops P' of the triangular recessed surfaces 23, 23 and engaged with the window 13 as shown in FIG. 11a and 11b are both sides 13 of the window part 13
a, 13b, thereby preventing the holder 11 from colliding with the holder 11 and causing a rattling sound. Since the movable blade 16 can be positioned at the center of the window 13, the relative vibration amplitude of the movable blade 16 to the fixed blade 15 can be maintained at an appropriate value.

In the above embodiment, the triangular protruding surfaces 22, 22 are formed on the holder 11 side, and the triangular recessed surfaces 23, 23 are formed on the window 13 side. The recessed surfaces 23, 23 are formed on the window portion 1.
The same applies to the case where the protruding surfaces 22, 22 are formed on the third side.

Furthermore, in the above embodiment, the dividing and joining line S between the outer cutter holder 3 and the main body case 1 is located below the storage chamber Q of the vibrator 7 that drives the inner cutter holder 5, as shown in FIGS. The storage window 13 of the edge mechanism 10 is located at the dividing joining line S.
For this reason, a notch R is formed in the outer cutter holder 3 to warn and prevent the outer cutter holder 3 from being installed in the wrong direction, and to prevent the outer cutter holder 3 from being installed in the opposite direction. When the scraping mechanism is in the protruding state, its cutting edge approaches the arched head, thereby widening the distance between the sideburns and the cutting edge of the main body case 1, making it easier to use.

As described above, according to this invention, it is possible to easily attach the edge mechanism and to make it easy to use.

[Brief explanation of the drawing]

Fig. 1 is a cutaway side view showing an example of a reciprocating electric shaver according to this invention, Fig. 2 is an exploded perspective view showing the shaving mechanism of the same razor, Figs. 3a and 3b.
FIG. 4 is an explanatory diagram of a method for protruding the holder, FIG. 4 is an explanatory diagram of the same essential parts, and FIG. 5 is a perspective view showing another means for bringing the holder into pressure contact with the window. 1...Body case, 10...Kiwazori mechanism, 1
3...Window part, 24...Groove, 26...Holder driving member.

Claims (1)

[Scope of utility model registration request] In the window 13 formed on the wall of the main body case 1,
In an electric shaver in which both ends of the shaving mechanism 10 are pivoted so as to be rotatably driven to the protruding position and the storage position, one side is open and the other side is provided on the inner wall of both ends on the window portion 13 side. A sealed groove 24 is formed, and the hinge projections 12 protruding from both end surfaces of the edge mechanism 10 are inserted from one side of the groove 24, and the edge mechanism 10 attached to the main body case 1 side is inserted into the groove 24 from one side. A holder drive member 2 having elasticity in the inner and outer directions of the main body case 1 which connects the operation button 14 and the edge mechanism 10 side to rotationally drive the edge mechanism 10.
6, an electric shaver in which the shaving mechanism 10 is elastically pressed toward the other side of the groove 24.