JPS5854987A - Blade replacing cartridge - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to wet razors, and more particularly to a unique removable blade cartridge, i.e., a removable blade cartridge, containing a pair of mutually offset or staggered cutting blades, usually separated by a spacer. The present invention relates to a blade assembly, the cartridge or blade assembly of which is operable to mate with a razor handle in a known manner.

This invention is an improvement on the cartridge disclosed in US Pat. No. 8,964,159. In that patent, the plastic cap 12 is permanently and immovably secured to the seat or support 14, and the blades 16 and 18 straddling the spacer 20 have their cutting edges appropriately exposed. It is sandwiched between the cap and the support part.

Throughout this specification, the term "blade body" refers to one or more blades within a blade cartridge or blade assembly.

A feature of the invention is that it includes a blade cartridge of a type adapted to be releasably coupled to the handle, and the cartridge includes a movable blade cover or cap.

Another feature of the invention is that each cartridge has a unique cartridge including a support device, a blade body, and a blade spacer, the blade body being permanently but slidably coupled to the support device. A cover or cap is provided to protect the disposable blade from contact with foreign objects, and the cover can be operated to protect the disposable blade from contact with foreign objects, and can also be operated to expose the main body of the disposable blade as appropriate for shaving.

A typical disposable blade cartridge embodying the principles of the present invention includes a disposable blade support, a disposable blade main body including a disposable blade spacer fixed to the disposable blade support as one assembly,
a guide device formed on the assembly; and a cap formed by a sliding body permanently engaged with the guide device so that the cover can move relative to the assembly. Probably.

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

The description will be made with reference to the drawings, particularly FIGS. 1 and 2.

Reference numeral 11 designates a blade cartridge having a groove 12 for releasably coupling to the handle 13 of the razor blade 9 in a known manner.

The cartridge includes a spare blade support 14, a spare blade main body 16,
and a movable cover 17.

As already mentioned, FIG. 1 shows the cover 17 in the first or closed position, as opposed to the second position.
The figure shows the cover 17 in the retracted, open position, exposing the blade body 16, suitable for wet shaving.

As will become clearer later, by means of the arrangement of the tracks and sliding pieces with suitable stops to limit the range of movement of the cover, the cover 17 is fitted with a permanently but slidably assembled blade support 14. and engages with the replaceable blade main body 16. The razor handle 13, while holding down the replaceable blade assembly, knurled portions 18 or lower end portions 20 on both end surfaces of the cover 17.
It is moved by grasping the cover and moving it around in the direction indicated by arrow 19.

Figure 3 shows a conventional disposable blade cartridge disclosed in the above-mentioned U.S. Pat. The exposure of the replaceable blade body is permanently set at the time of manufacture.

4 to 8 show the slidable cover 17, the blade body 16, the spacer 21, and the blade support 14.

The replaceable blade 16-16 and the spacer 21 are attached to the replaceable blade support 14.
Rivets) 22-22 are fixed so that they do not move relative to each other.

The cover side wall 20 formed by the recess 2B-28 becomes a sliding portion that fits into the rail 24 formed on the blade support 14. The tracks 24-24, sometimes referred to as guide devices for purposes of this patent claim, may be formed on the assembled blade body and blade support if necessary for manufacturing considerations and good design. It's okay.

The cover 17 has a permanent but slidable connection within the sidewall 20, with the leading edge of the sidewall extending outwardly to fit over the underside of the track 24 when assembling the cover to the track. It has claws that bend inward.

In order to control the range of movement of the cover relative to the blade assembly and to ensure proper cutting blade exposure, the inner surface of the cover side wall and the end of the blade assembly are provided with a stop piece that cooperates to function as a stop device. It is formed.

The stop device is a stop piece 27 on the inner surface of the lower end 20 of each cover.
It has shoulders 28 and 29 at each end which serve to engage mating stops 31 and 32 on the blade assembly.

As is clear in FIG. 8, the position of the cover 17, indicated by the dotted line, represents the closed or first position of the cover, in which the shoulder 29 of the stop piece 27 contacts the mating stop piece 82. are doing.

The solid line indicates the open or second position of the cover 17, and the shoulder 28 of the stop piece 27 is connected to the stop piece 31 of the replaceable blade assembly.
, thereby exposing the cutting edge of the disposable blade suitable for wet shaving.

It goes without saying that the arrangement and configuration of the stop piece is a matter of technical choice, adjusting it so that in its open position the cutting edge is adequately exposed and in its closed position it is adequately protected.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the replaceable blade cartridge of the present invention, showing a state in which the cover or cap of the replaceable blade main body is in a closed position, that is, a first position, and the cutting blade is covered. Figure 2 is similar to Figure 1, but with the cover in the open position and
That is, in the second position, the cutting blade of the disposable blade body is exposed in a manner suitable for wet shaving. Figure 3 shows a conventional replaceable blade cartridge, with a cover,
The blade body and blade support are all firmly fixed together, and the cutting blade is permanently exposed. FIG. 4 is a cross-sectional view along the plane indicated by line 4-4 in FIG.
The relationship between the rail and sliding piece is shown. Figure 5 is an exploded view with the sliding cap removed, showing the replaceable blade body fixed by the protrusion and the rail on the replaceable blade support. FIG. 6 is a view of the inner surface, or side wall, of the lower end of the sliding cap, viewed in the direction of arrow 6--6 of FIG. 5, showing the sliding piece and one element of the stop device. Figure 7 is a left end view of the replaceable blade body and replaceable blade support.
Viewed in the direction of arrow 7--7 in the figure, further elements of the guide or rail and stop device are visible. FIG. 8 is an end view with parts cut away to show the operation of the stop element for limiting the range of movement of the cap relative to the blade body. 11... Replacement blade cartridge 14... Support part 16
・Replacement blade body 17 ・Cap (cover) Patent applicant: Warner Lambert Company (2 others)

Claims (1)

[Claims] (1) A cap or cover is fixed to the support part by a protrusion or a rivet together with a replaceable blade body having at least one cutting blade sandwiched between the cap and the support part. In a type of blade cartridge in which the cutting blade is permanently exposed relative to the cap and support in a position suitable for wet shaving, the blade body may be replaced to form a blade assembly. a device for securing to the blade support, the blade assembly comprising a guiding device, permanently coupling the cap to the blade assembly and facilitating movement of the cap relative to the blade assembly; A replaceable blade cartridge characterized by a sliding body formed on the cap and operating in conjunction with each other to provide a blade. (2) The cartridge according to claim 1, wherein the guide device is formed on the replaceable blade support. (8) The force of claim 2 in which the guiding device defines a rail molded integrally with the support portion = trille. (4) The cartridge according to claim 3, wherein the cap is molded with knurling to prevent the cap from slipping when gripped. (5) The cap or cover is fixed to the support part by a protrusion or a rivet together with the replaceable blade main body having at least one cutting blade sandwiched between the cap and the support part, and the cutting blade is In IJ Tsuji, the blade body is attached to the blade support so as to form a blade assembly. a device for fixing the device to the support portion, and the support portion includes a rail;
an associated slide formed on the cap to facilitate movement of the cap relative to the support and a stop on the cartridge for controlling the range of movement of the cap relative to the support; A replaceable blade car featuring a device)
IJji. (6) A cap or cover is fixed to the support part by a protrusion or a rivet together with a replaceable blade main body having at least one cutting blade sandwiched between the cap and the support part, and the cutting blade is is permanently exposed in a position suitable for wet shaving relative to the cap and support, the blade body being fixed to the blade support to form a blade assembly; the device, the support portion comprising a rail;
an interlocking slide formed on the cap to facilitate movement of the cap relative to the blade support; and a cartridge for controlling the range of movement of the cap relative to the blade assembly. an upper stop device, said stop device defining a first position in which said cutting blade is covered by said cap and protected from contact with foreign objects, and a second position in which said cutting blade is suitably exposed for shaving. and a stop piece on the cap and the support part that operates in conjunction with the stop piece on the cap and the support part. (7) a razor blade assembly operable to make a separable connection with the handle, said razor blade assembly being connected to a razor body which are all secured together to form a permanently connected body; a blade support, the blade assembly having a guide device, and a cap engaging the guide device such that the cap is slidably permanently coupled to the blade assembly. A spare blade assembly equipped with a rail.