JPS5847189B2 - safety razor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a so-called oscillating safety razor in which the assembled blade rotates about an axis extending transversely to the bundle.

The present invention was devised especially for use with disposable, convenient razors, and its purpose is to strengthen the holder.

Next, the present invention will be explained with reference to the drawings shown as examples.

The assembled blade body 1 includes two blade bodies 1 between a top plate 10 and a blade base 11.
2 and 12 are fixed with adhesive, and a spacer 13 is interposed between the two blade bodies.

On the back surface of the assembled blade 1, a pair of grooves 15, 15 are formed by providing opposing protrusions 14.14 with L-shaped cross sections in the longitudinal direction.

The connecting body 2 has outward protrusions 16, 16 parallel to its length so that the assembled blade body 1 can be connected thereto.

These protrusions 16, 16 are connected to the grooves 15, 16 from the side surface of the assembled blade body 1.
The assembled blade body 1 and the connecting body 2 are connected by inserting the blade assembly 1 into the connecting body 15.

In addition, the plate portions 17, 1 connecting both protrusions 16, 16
7 is provided with U-shaped bearing grooves 4, 4.

In the drawing shown as an example, the bearing grooves 4, 4 are separated into two parts, but the protrusions 16, 16 are connected by a solid member, and the solid member is bored in the length direction to form a single bearing groove. It can also be formed.

One of the protrusions is formed to have a relatively short length so that it can pass through a passage 8 surrounded by the arms 5, 5 and shaft 7 of the holder 3.

The holder 3 has a pair of arms 5, 5 integrally formed on its head, and the arms are immovable with respect to the bundle 6.

That is, the arms 5, 5 do not open outward or close inward due to their own elasticity.

The arms 5,5 are also provided with shafts 7,7 extending transversely to the bundle 6.

In the drawing shown as an example, this axis is connected to both arms 5.
, 5, but the shafts 7, 7
Since it is only necessary to protrude a little inward from both arms, there is no need for the intermediate portion of the bridge-shaped shaft 7 to exist.

When the arms 5, 5 are formed to be narrow as shown in FIG. 4, the shaft 7 needs to be shaped like a bridge so that the arms do not move relative to the bundle 6.

After passing the relatively short protrusion 16 through the hole passageway 8 and fitting the shaft 7 into the bearing groove 4, the assembled blade body 1 is coupled to the connecting body 2.

At that time, while bending the spring piece 18 provided on the holder, the head 20 is inserted into the recess 19 provided on the back surface of the connector.
fit inside.

This spring head 20 functions to support the connecting body 2 from below.

Due to this action, the connecting body 2 and the holder 3 are connected,
Moreover, the connecting body can be rotated about the center line of the shaft 7.

Therefore, the assembled blade body 1, which moves in the same manner as the connecting body 2, also rotates.

Incidentally, this type of safety razor is provided with a separate means for returning the assembled blade body 1 to its original position when it rotates.

According to the embodiment of the present invention, a spring piece 18 is provided between both arms 5, 5 of the holder so as to be able to swing back and forth.

On the other hand, a recess 19 is provided on the back surface of the connecting body, and the head 20 of the spring piece 18 is accommodated within the recess 19.

The head 20 is supported by being in contact with the inner wall of the recess 19 from the front and back.

The present invention has the above-mentioned configuration, and its greatest feature is that the arm 5.5 provided on the holder is connected to the bundle 6.
Even if the arms 5, 5 do not spread to both sides due to their own elastic force,
The assembled blade body 1 is rotatably attached to the holder 3.

The conventional method of connecting the assembled blade body and arm of this type of light safety razor is to provide a journal bearing device on the back side of the assembled blade body, form a journal shaft on the arm, and make the arm movable. By using its own elasticity to spread the journal shaft to both sides, the journal shaft was inserted into the bearing of the assembled blade.

Therefore, in order to make the arm movable, the conventional product had to be made relatively thin, and had a fatal flaw in that when the arm was pushed out, it would break from the base.

In the present invention, with the above-described configuration, the assembled blade body 1 can be rotatably attached to the holder 3 without making the arm 5.5 movable.

Therefore, there is an effect that the arm will not be damaged.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a sectional view of the main part thereof, Fig. 2 is a perspective view of the connecting body, Fig. 3 is a perspective view of the holder, and Fig. 4 is a diagram showing another embodiment. It is a perspective view of the arm part in an example. 1...Assembly blade body, 2...Connection body, 3.
...Holder, 4...Bearing groove, 5...
...Arm, 7...Axis.

Claims (1)

[Claims] 1 Consists of an assembled blade body 1, a connecting body 2, and a holder 3, a means is provided between the assembled blade body 1 and the connecting body 2 so that the two can be detachably connected, and the connecting body 2 is attached to the holder 3. The safety razor is adapted to be mounted rotatably around an axis 7 of the holder, the connecting body 2 having a longitudinal bearing groove 4, and the holder 3 having an arm on its head. 5.5 is provided, said arm being immovable relative to the bundle 6, and the arms 5,5 are provided with an axis 7,7 extending transversely to said bundle 6; A passage for a part of the connecting body 2 to pass through so that the shafts 7, 7 can pass over a part of the connecting body 2 and fit into the bearing groove 4 for the connecting body 2 to which the body 1 is not attached. 8; and a support member for supporting the connecting body from below when the shaft 7.7 is inserted into the bearing groove 4.