DE1094151B - razor - Google Patents

Description

GERMAN

The invention relates to a razor.

The action of most of the previously known motorized razors is based on the movement of a knife which is guided along holes, slots or grooves in a plate. If the cutting plate is moved over the skin, new hairs continuously get into the slots or holes, where they are cut off by the knife. At a given frequency of the knife, the number of hairs cut off, ie the shaving speed, is therefore dependent on the time span in which the plate covers its way over the skin. It is not important here whether the knife executes a reciprocating or a rotating movement.

In most cases the insert is stationary, i. that is, it is immobile with the body of the apparatus tied together.

However, it is also already known for the cutting plate to move in addition to the movement of the knife granted. In one case the additional movement was created manually. However, there are motor-driven razors are also known, in which the movement of the cutting plate done mechanically. In a number of previously known razors, the cutting plate moves in the direction of the movement of the knife. This results in an unfavorable relative movement or a unfavorable relative speed between the knife and the cutting plate, causing the cutting effect is reduced for at least part of the time the device was used. Also is a razor known in which the entire cutting head, d. H. the cutting knife and the slotted one curved plate, perform an oscillating movement together and the knives in addition perform a movement perpendicular to this. The structure of such a razor, especially the Cutting head is costly in that initially the cutting head for the oscillating movement is a Must experience storage and, moreover, in this storage itself once again additionally stored the knives must be in order to allow their swinging movement. The structure of such a razor therefore differs from the one which has been shown to be advantageous and preferably used up to now Shape of the razors largely from.

The invention aims to create a razor in which only the cutting plate of the An additional movement is given to the cutting head, whereby the cutting insert has an oscillating movement executes, which extends the path led over the skin. In the razor according to the invention it is achieved that the cutting effect is .very favorable, razor

Applicant:

Johan Godefroy,

Overveen, Bloemendaal (Netherlands)

Representative: Dipl.-Ing. H. Wangemann, patent attorney,
Düsseldorf, Graf-Adolf-Str. 82

Claimed priority:
Netherlands 27 May 1958

Johan Godefroy, Overveen, Bloemendaal

(Netherlands),
has been named as the inventor

because the relative movement between the cutting plate and the cutting knife takes place in a certain direction. Through this the shaving time is reduced by 30 to 50%.

The advantages mentioned are combined with a further structural advantage, which is that the cutting knife and the cutting plate are driven together by an armature shaft.

The invention is based on a razor with an oscillating cutting blade and one opposite the housing base from the motor-driven cutting plate and suggests that the cutting knife opposite the cutting plate in a known manner linearly and thereby the cutting plate opposite the cutting knife swing around an axis located in the direction of movement of the knife, with different Vibration number are driven jointly by an armature shaft or armature block.

The frequency of the cutting plate is 10 to 30% of the frequency of the cutting blade. At a Hair shearing device that with a cutting plate resting against the skin and a rotating cutting head is provided, wherein the outer cutting insert an oscillating movement about the drive axis of the Performing inner cutting part, it is known the frequency of the oscillating movement in the order of magnitude to hold from 100 to 500 vibrations per minute. In the shaving device according to the invention on the other hand, the frequency of the cutting tip is between approximately 500 and 1100 per minute. - Here the amplitude of the oscillating movement of the cutting insert is between 0.6 and 1.8 mm. - It is also known a razor in which the cutting plate oscillates perpendicular to the cutting knife, here-

009 650/61

Claims (6)

however, the frequency of the cutting plate is just as great as that of the knife. The construction of the razor according to the invention provides that the armature is arranged on a rotatable block on the armature shaft, on which a ratchet wheel provided with teeth is also seated. The armature shaft is provided with one or two mutually offset cam disks or cams that engage the cutting plate. The feature according to which the cutting knife has a different number of vibrations from the cutting plate should not have an independent meaning, rather it should only be of importance in connection with the other features. The features of the claims, which contain the information on the frequency and amplitude of the vibrations, should only have meaning in connection with the features of the main claim. The drawing shows an exemplary embodiment of the invention, namely FIG. 1 shows a cross section through the apparatus, FIG. 2 shows a longitudinal section and FIG. 3 shows, on an enlarged scale, the armature shaft with the elements arranged thereon. The upper end of the razor is formed by the curved cutting plate 3 to be pressed against the skin. Thus, the knife also perform a reciprocating movement in the direction of the double arrow A. The lateral ends of the curved cutting plate 3 are supported by end plates 6, which have a lower flat edge 6 a, on which the cutting plate 3, with holes or Slitting is provided, ends with their longitudinal edges. The cutting plate can be rotated back and forth in the direction of the double arrow B by means of its end plates 6 in bearings 5, 5 '. The electromagnets 27, 28 of the oscillating armature drive, which give the armature 23 a reciprocating movement, are located in the housing 7 in a known manner. The armature is connected to the armature shaft 8 via a clapper 24. Here, the clapper 24 is held by a rotating block 9 which can rotate freely on the shaft 8 but is secured against lateral displacement and on which the arm 4, which carries the knife block 2, is also arranged. The shaft 8 is mounted in the housing 7 and carries a ratchet wheel 32 firmly connected to it. When the block 9 is rotated, the ratchet wheel 32 and thus the armature shaft 8 are set in rotation by the spring 31, which is connected to the block the anchor swings in one direction. When the armature swings back, the spring 31 slides on the teeth of the ratchet wheel 32, which is held in its reached position by a leaf spring 30 which engages the teeth on the outer circumference of the ratchet wheel. Two cam disks or cams 19 are arranged offset from one another on the armature shaft. The longitudinal edges 16, 17 of the cutting plate 3 rest against these cams, so that when the shaft 8 rotates, the cutting plate can swing in the direction of the double arrow B in its bearings 5, 5 '. Instead of the one cutting insert, two cutting inserts can also be used, the movement of which is controlled by cam disks arranged next to one another on the shaft 8. In this case, too, storage can take place in bearings 5, 5 '. The movement of the cutting plates can be selected differently depending on the position of the various cam disks or cams. PatentAxsPRecu E: 1. Shaver with oscillating cutting blade and one opposite the housing base motor-driven cutting plate, characterized in that the cutting knife (1) opposite the Cutting plate (3) linearly in a known manner and thereby the cutting plate (3) relative to the Swing the cutting knife (1) around an axis (5-5 ') in the direction of movement of the knife, where they are shared by an armature shaft or armature blocks when the number of vibrations varies (9) are driven. ^ "** ■ **» «* -" - 2. Shaver according to claim 1, characterized in that the frequency of the cutting plate (3) 10 to 30% of the frequency of the knife (1). 3. Shaver according to claim 1 and 2, characterized in that the frequency of the Cutting plate (3) is 8 to 18 Hertz. 4. Shaving apparatus according to claim 1 to 3, characterized in that the amplitude of the oscillating movement the cutting plate (3) is 0.6 to 1.8 mm. 5. Shaver according to claim 1 to 4, characterized in that the armature (23) on a rotatable block (9) is arranged on the armature shaft (8), on which a The ratchet wheel (32) provided with teeth is seated. 6. Shaver according to claim 1 to 5, characterized in that the armature shaft (8) with one or two mutually offset cam disks (19) or cams is provided on the Attack the cutting plate (3). Considered publications:
German Auslegeschrift No. 1 003 629;
French Patent No. 1,132,943;
British Patent Nos. 608 152, 675 234;
U.S. Patents Nos. 2,277,328, 2,329,891,
339 677, 2 584 590, 2 716 279. 1 sheet of drawings ® 009 650/61 11.60