DE1703582A1 - Locally thinner razor plate for dry razors with a running surface for a movably arranged cutting element - Google Patents

Description

Applicant: NV Philips' Gloeilampenfabrteken
File Ne. PHN-2515

Registration from: 1 1. June.

Locally thinner base plate for dry shaver with a running surface for a movably arranged cutting element.

The invention relates to a base plate of a base »

head for a Trockenrasiergerät with a gene having Haardurchtrittsöffnun- M provided running surface for a movable cutting member is arranged, wherein against the skin page to be printed having on the Basierplatte at the location of the tread, a variable bead.

Such easier plates with locally thinner parts are known"

In the construction of these known razor plates for Dry razors became known · phenomenon that when used Shaving the hair to be cut with a dry razor The shorter and shorter the length of the cut, the thinner the plate at the point of the tread for there is a son's organ that cooperates with the Raeierplatt. 1098 5 3/036 6

PHN. 25 15 »

Although shaving plates have been produced on the basis of this knowledge, their real thickness is at the point of the running surface In practice, it has been found that the expected, probably better results are not simply due to the difference in the material thickness of the shaving plate at the point of the tread for the Cutting organ, but that other factors such as shaving skill and habits also influence the shaving results.

With regard to shaving skill, the following factors can be distinguished: “the one by the shaving plate on the Pressure exerted on the skin, the direction of movement of the razor plate in relation to the skin to be shaved and the manner in which the shaving is carried out The user holds the device in his hand} Habitus factors as usual The surface part of the razor plate pressed against the skin and the shape of the razor housing aimed at promoting the handling of the razor also apparently have a not insignificant influence on the shaving results.

It was also known that the minimum thickness of the parts of the razor plate to be pressed against the skin old Buck view on normal requirements in connection with strength and service life should not exceed a certain lower limit.

The invention is based on the knowledge that

while maintaining the desired consistency and quality of the shaving device, it is very satisfactory «shaving results can be achieved» - η η, if there is too strong contact between the locally thinner parts of the razor plate and the skin to be shaved, e.g. as a result of a certain individual handling B.B. if the pressure on the razor plate is too strong " on the skin is wholly or at least largely prevented, as this

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Pressure scrapes off the sauté, which then penetrates too deeply into the hair passage openings of the base plate, and can and also entail can cause premature breakage of the thinner parts of the razor plate.

The invention concretizing the knowledge described is characterized in that the tread parts of lower thickness come together in the direction of movement of the son's organ line up.

When using a trocar razor with a Basierplatte according to the invention, the skin to be shaved will sound like the thicker parts of the basierplatte at the point of the running surface worn for the cutting organ.

During the shaving process, the shaving plate, which is pressed against the skin, moves over the skin to be shaved and so cuts through the exerted pressure the skin in the direction of movement of the base plate about « high so that the skin in this direction of movement gate the base plate about a lifts and is stretched a little under the base plate.

This effect is increased, although probably not proportionally, if the surface of the base plate to be printed against the skin is larger, or rather if the path traversed by the hair plate printed against the skin is wider.

Even in the case of an "" honorable basic framework, such a get wider track «earth» ·

The stretching of the skin brings old that the The lower sides of the Baars-Sakchen move towards the upper skin.

$ i ** Hair tongues can be used to fill the superstructure *

PHN. 2515.

be entrusted. If the epidermis is tense, be it in slight hatred, so the skin looks for a larger surface in response to this stretching to assume, whereby when stretching a part of the inner wall of the hair sacs, which lie near the underside of the epidermis when the skin is not stretched, part of the outer surface of the stretched Skin forms and thus the hair to be cut off by a larger part protrude and cut off closer to the hair foot when shaving can.

The thicker parts of the razor plate serve as a

Coarsely shaved parts, whereby the hair is cut less short while instead of the thinner parts of the razor plate, the outstanding hair can be cut off closer to the foot of the hair. The skin seeks to cling to the thinner parts of the grid plate, as it were, whereby the possibility of the skin penetrating too far, which brings with it the unpleasant scraping effect, is reduced.

It should also be noted that at a somewhat tense

Skin the possibility of the skin penetrating the hair through-holes too far the grid plate itself is also reduced, although this reduction depends, among other things, on the texture of the skin e.g. depends on the natural foldability and elasticity.

The previously described gradual cutting off of the Hair does not need to be critical to achieve a good shave result to be, as is well known, when using the usual, uniform thick razor plate, the hair is not directly on the length of the minireal but also gradually cut off shorter »

The razor plate of a razor head for a dry shaver device according to the invention is preferably designed such that the

.109853 / 0366 iaD

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Shaving plate parts of different diokes are arranged in two groups whereby the parts per group have almost the same thickness.

Such a design, which is limited to two groups of parts of different thicknesses, can be considered a compromise between them striving for an optimal shaving capacity by means of the thinner parts of the razor plate and maintaining the desired strength and Lifespan of the shaving plate by means of the thicker parts of the grid plate to be viewed as.

Furthermore, the invention is particularly important in besug Manufacturing costs compared to known types of cutting inserts, if at the point of the running surface the razor plate with the same hair passage openings, e.g. transversely to the direction of movement of the son’s ocular organs running slots, round openings, etc. is provided.

With such designs, the extra work in production compared to known types of razor plates is low, see above that the manufacturing costs can be relatively low.

A well-suited design of the razor plate

Shaving head for a dry razor according to the invention is thereby get that the razor plate in place of the thinner parts of the The tread is provided with round hair passage openings while the diokerus parts with transverse to the direction of movement of the cutting organ Slots are provided.

The round hair through holes in the thinner divider form, as it were, an additional safeguard against the scratching effect if the skin penetrates too far despite the tensioning of the skin Skin due to the hair length should be taken into account in the thinner parts, since the skin of

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the round inner edge of the hair passage openings around the puss of the advancing part is supported. This type of support works against the too far penetration of the skin.

This training is particularly important for a razor head for a rotatably arranged cutting element of a multi-headed Dry shaver.

The multi-head design of a base device results

a greater tension of the skin slipping away from under the razor heads, whereby there is an additional reason to be proportionate, as I said to use thin razor plates, which are thinner with this smaller thickness and has thicker parts.

According to the invention, a shaving plate for a

Shaving head with a rotatably arranged cutting element preferably designed in such a way that the parts of different thickness adjoin one another in sectors, of soft parts that are approximately the same tial dimensions are 4 to 8 thinner, which thinner parts are delimited on both sides by a thicker part.

A well-suited, practical design of the razor plate according to the invention for a razor head with a rc tierbar Cutting element is obtained in that the thickness of the thicker tread parts is more than 0.07 now e.g. 0.075 now or more and that of the thinner parts less than 0.07 mm, e.g. 0.065 mm or less will.

The invention is set out below with reference to the accompanying text

Drawing explained in more detail, with further, advantageously applicable details to be highlighted.

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PBN. 2515.

1 is a plan view of an elastic base plate according to the invention, which is provided with a back and forth (not shown) movable cutting member cooperates, whose direction of movement duroh the arrows A-A are indicated f

Fig. 2 shows a section through the razor plate longitudinally the line H-II in Fig. 1 in enlarged Maas tab j

Fig. 3 shows a plan view of a round razor plate n & ch of the invention with a rotatable, not shown Cutting organ cooperates $

FIG. 4 shows a cross section through the shaving plate along the line IV-IV in FIG. 3.

Fig. 5 shows a plan view of a round razor plate according to the invention with mutually identical hair passage openings and

Fig. £ shows a cross section through the shaving plate along the line VI-VI in FIG.

The shaving plate 1 according to the invention in Fig. 1 has three thinner parts 2 with round hair passage openings 4 and three thicker parts 3 with slit-like hair passage openings 5

The thinner parts 2 of the shaving plate 1 are lined up the thicker parts 3 in the direction of movement of the razor plate

1 cooperating, not shown cutting member according to the arrows A.A.

In Fig. 3 are provided with round openings 4, thinner parts 2 of the round shaving plate 7 according to the invention indicated by parallel step lines 6) they show how the thinner parts

2 are obtained by depth grinding, assuming that the

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Hair passage openings are made after the grinding process »

In the round easier plate 8 according to the invention in FIG. 5 first shows the slot-like hair passage openings 5 made, whereupon the parts 2 down to the desired, smaller thickness be sanded off. The manufacture of the base plates according to FIG. 5 is of course cheaper than that of the razor plates according to Fig. 3 "

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Claims (10)

. - 9 PATENT CLAIMS. phh. 2515. 1 · / Base plate of a razor head for a dry shaver with a running surface provided with hair passage openings for a movably arranged son eid organ, with on the against the building on on the pressing side, place the razor plate at the point of the running surface having variable thickness, characterized in that the tread parts of different thicknesses line up in the direction of movement of the cutting organ » 2. Shaving plate according to claim 1, characterized in that that the shaving plate parts of different thicknesses arranged in two groups with the parts per group having almost the same thickness. 3 · Shaving plate according to claim 1 or 2, characterized in that that at the point of the running surface the razor plate is provided with the same hair passage openings. 4. The razor plate according to claim 1, 2 or 3, characterized in that the razor plate is provided with slots running transversely to the direction of movement of the cutting element at the location of the running surface . ■,. ■■. 5. Shaving plate according to claim 1, 2 or 3, characterized in that that the razor plate is provided with round hair passage openings at the point of the tread 6. Shaving plate according to claim 1 or 2, characterized in that that in the place of the thinner parts of the tread the razor plate with round hair passage openings and in the place of the thicker ones Parts of the running surface with slots running transversely to the direction of movement is provided » 10 9 8 53/0366 PHK. 2515. - 10 - 7 ·. A razor plate according to any one of claims 1 to 6 for one A razor head with a rotatably arranged cutting element, characterized in that the tread parts of different thicknesses are lined up in sectors, of which parts are approximately one below the other Raise the same tangent wedge © dimensions, 4 to 8 thinner, which thinner parts are limited on both sides by a thicker part. 8 · Shaving plate according to claim 7, characterized in that that the thickness of the thicker tread parts may be more than 0.07 mm. 0.075 nm or more and those of the thinner parts less than 0.07 e.g. Is 0.065 nim or less. 9. Dry shaver with a shaving plate according to one of claims 1 to 8. 10, dry razor with at least one round razor head with a shaving plate according to one of claims 1 to 8. 109853/0366 ORIGINAL BATHROOM A4 Blank page