JPS6114833B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to razors, and in particular:
This invention relates to razors for women and others that prevent cuts and abrasions from being caused by careless use of inappropriate razors.

Women use razors in different places than men. And, for example, razors designed for men are inappropriate for the armpits and legs.

Most razors currently sold are for men. As a razor for men like this,
Some use a single-edged cartridge with two blades.
U.S. Pat. No. 3,832,774 describes a cartridge of this kind, in which a plurality of blades are assembled by shifting them back and forth, and each blade has approximately the same shape and dimensions as a single blade. have. The cartridge is attached to and removed from the handle using a sliding flange type connection member well known in the mechanical arts, making it easy to replace the cartridge.

Patent Application No. 52-123985 (see Japanese Unexamined Patent Publication No. 53-51053) discloses a razor blade cartridge for use primarily by women. This cartridge's special geometry allows it to warp more smoothly, safely, and efficiently than conventional cartridges. However, this specially designed cartridge is used differently from men's cartridges. If a men's cartridge is carelessly used in the handle for this special women's cartridge, the grip will be uncomfortable and there will be many dangers.

When selling razor blade cartridges, it is important that the handle can be used on hand. Therefore, when designing a cartridge for women, it is necessary to be able to attach the cartridge to a conventional handle; It is necessary to ensure that it cannot be installed.

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a coupling mechanism between a female cartridge and a handle that eliminates the above-mentioned dangers, and more particularly, the blade cartridge uses other handles than a dedicated handle. However, the purpose of this handle exclusively for the female blade cartridge is to make it impossible to attach the male cartridge.

To achieve the above objectives and obtain the intended effects, the present invention is designed such that the handle is dedicated to a specially designed blade cartridge, but the blade cartridge may also be used with other conventional handles. To provide a razor with a replaceable blade cartridge. The handle member has a transversely extending head connected to an elongated gripping portion. The head has a pair of flange members on both sides extending substantially perpendicularly to the head, and a protrusion that protrudes a predetermined distance from a plane including both flanges is provided between the flanges. The replaceable blade cartridge has two spaced apart grooves for receiving the flanges, with a recess between the grooves having sufficient dimensions to enclose the protrusion.

Embodiments of the present invention will be described in detail below with reference to the drawings.

1 and 2, a cartridge 32
and a head 3 that detachably supports the cartridge.
1 and a handle 33 having a handle 33 at one end. A groove is formed in the elongated end surface of the head 31, and a channel member 34 having the same shape as the groove is fitted. Channel member 34 has a generally U-shaped cross section;
Flanges 35, 3 are provided on both sides at approximately right angles from the legs on both sides.
6 is overhanging. Flanges 35, 36 are inserted into corresponding grooves in cartridge 32. The rod member fitted into the channel member 34 forms an elongated protrusion 40 which projects perpendicularly from the plane of the flanges 35, 36 and is received in a corresponding groove-like recess 50 of the cartridge 32. Two blades 52 and 53 are fixed to the cartridge 32 at a predetermined angle.

In other conventional razors, the distance between the sliding connection groove of the cartridge and the surface corresponding to the bottom surface of the recess 50 of the cartridge of the present invention is too small to accommodate the protrusion 40 of the handle of the present invention. Therefore, it is not possible to attach a conventional cartridge to the handle 33. Therefore, it is possible to prevent the handle 33 of the present invention from accidentally using a blade cartridge for men. On the other hand, the cartridge 32 of the present invention can be attached to any cartridge handle.

FIG. 3 shows another embodiment of the groove structure. head 7
0 has multiple flanges 71, 71A', 7 from both sides.
2,72A stands out. Flange 7 on both sides
1, 71A; A protrusion 73 protrudes vertically from between 72 and 72a as an extension of the head 70.
The protrusion 73 has flanges 71, 71A; 72, 72
A and fit into the central recess 80A and grooves on both sides of the cartridge 80 shown in FIG. 4, respectively.

FIG. 5 shows the cartridge 80 of the present invention attached to a typical conventional handle. This handle has a U-shaped channel member 82 at one end of the main body 81.
is fixed with a stud 84 passing through the hole 85. Flanges 83 and 83A projecting outward from the channel 82 fit into the innermost grooves of the cartridge 80. When a conventional handle is used in this way, the central recess 80 of the cartridge of the present invention
Note that A does not work.

Other embodiments of the invention are shown in FIGS. 6-8. A channel 90 shown in FIG. 8 has short flanges 91 and 92 extending from both sides of one end. Flanges 91 and 92 are preferably coplanar and can be provided at one or both ends of channel 90. In addition to the flanges 93, 92, flanges 93, 94 extend from both sides of the channel 90. Further, a protrusion 95 from the center of the channel 90
protrudes and fits into the recess 80A of the cartridge shown in FIG. Flanges 93, 94; 91, 92 are the third
The flanges 71, 71A and 72, 72A shown in the figure are fitted into the corresponding grooves of the cartridge 80.

FIG. 6 shows yet another embodiment. The end of the head 110 of this handle has a projection 111, which has a trapezoidal cross section that widens towards the tip, and is covered with a metal channel 112. Details of the channel 112 are shown in FIG. Bendable tabs 115 protrude from both ends of the channel 112, and are folded to fit tightly onto corresponding surfaces of the handle protrusion 111 of FIG. Inside the tabs 115 at both ends are flange members 116, 117, 118 extending outward at right angles. Flanges 116-118 fit into corresponding grooves in a suitable cartridge, such as cartridge 32 shown in FIGS. 1 and 2. channel 1
The central clasp 119 of 12 is for contacting a corresponding key on the cartridge to center the cartridge relative to the head of the handle. Similar clasps may be provided on the handles and cartridges of the other embodiments shown here.

Even if you try to attach a conventional cartridge to the handle of the structure shown in FIGS. 3 to 5 and 8, the protrusion at the tip of the handle and the upper flange will interfere, making it impossible to attach the conventional cartridge. Can not. Therefore, the mistake of attaching a men's cartridge to the handle of the present invention instead of the cartridge of the present invention will not occur, and no dangerous consequences will occur. However, on the contrary, the cartridge of FIG. 4 can be attached to a conventional handle as shown in FIG. Therefore, conventional handles that are commercially available can be used with the female cartridge of the present invention, so that existing handles can be utilized to use the new female cartridge of the present invention. The handles of FIGS. 1 and 1A have the same effect as the handles of FIGS. 6 and 7, but both are due only to a protrusion projecting from the tip of the handle.

A preferred method of assembling the connecting structure on the head of the handle of the present invention is to fit a U-shaped metal channel 34 into a corresponding groove in the head 31 and project from the head in a direction perpendicular to the handle body 33. The pillars are passed through the corresponding holes in the channel. Next, the protrusion 40 is placed in the channel 34 and joined to the aforementioned pillar by ultrasonic welding. This assembly can, of course, be assembled by other known methods and can be made of metal as well as plastic.

As described above, the razor of the present invention prevents the danger of accidentally using a conventional blade cartridge in its dedicated handle, and furthermore, the razor blade cartridge of the present invention can also be used in a conventional handle. It has the advantage of being possible.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a razor for women which is an embodiment of the present invention. FIG. 1A is a sectional view taken along line 1A-1A in FIG. Figure 2 is a side view of a portion of the razor in Figure 1;
FIG. 3 is a partial perspective view of the head of a razor handle according to another embodiment of the present invention. FIG. 4 is a partial perspective view of the cartridge attached to the head of the razor shown in FIG. FIG. 5 is a side view showing the cartridge shown in FIG. 4 attached to a conventional handle. FIG. 6 is a partial side view showing another embodiment of the razor handle head of the present invention. 7 is a perspective view of a channel for attachment to the handle head of FIG. 6; FIG. FIG. 8 is a perspective view of yet another embodiment of the razor handle head of the present invention. 31...Head, 32...Cartridge, 33...
...Handle, 34...Channel, 35, 36...Flange, 40,73,95,111...Protrusion,
50... recess, 70... head, 71, 71A, 7
2,72A...flange, 80A...recess, 80
... Cartridge, 81 ... Handle, 82 ... Channel, 84 ... Pillar member, 91, 92 ... Flange, 90 ... Channel, 93, 94 ... Flange, 110 ... Head, 112 ... Channel, 1
15...Tab, 116...118...Flange.

Claims (1)

[Claims] 1. A razor with replaceable blade cartridge, comprising a handle member having a head extending in the transverse direction of the elongated handle member, and a replaceable blade cartridge, the head of the handle member protruding from the head at a substantially right angle. A pair of flange members in the same plane extending in the longitudinal direction of the head is provided on both sides, and a protrusion 40, 73, 95, 111 that protrudes a predetermined distance from the plane containing the flange is located between the two flanges. The blade cartridge has a connecting structure forming two spaced apart opposing grooves for sliding engagement in the longitudinal direction of the flange member and the head for attaching the cartridge to the handle. and recesses 50 and 80 provided between the two grooves to accommodate the protrusion when the cartridge is attached to the handle.
A razor with a replaceable blade cartridge, characterized in that it has the following features: