DE102004031378A1 - Hair and / or beard trimmer - Google Patents

Abstract

Cutting device comprises an adjusting element (4) interacting with a screw thread which is coupled with a working part (8) so that the adjusting element rotates in a translatory pushing movement of the working part. Preferred Features: A rotating coupling element (13) supports the screw thread and has a pinion which interacts with an inner tooth crown (15) arranged in the adjusting element so that the adjusting element rotates with the rotary movement of the screw thread. The working part has a further cutting element which moves against the cutting element for cutting.

Description

AREA OF INVENTION

The The invention relates to a hair and / or beard trimmer with a Casing, with a cutting device, with at least one working member, the opposite the housing arranged translationally displaceable to a specific setting of the hair and / or beard trimmer.

BACKGROUND THE INVENTION

Hair clippers are portable devices, which have a cutting device in which two successive lying comb-like cutting elements oscillating against each other Perform movement, to cut hair between the edges of the comb structures. This is usually realized by one of the cutting elements is fixed and the other cutting element by an electric motor in an oscillating Movement is offset.

To the Setting the functions of such a hair and / or beard trimmer can be on or be provided several working members, the translational with respect to the housing or with respect to the cutting device are movable.

The adjustment of the working members can be realized by a rotatable, arranged around the housing, annular adjusting element, as from the document EP 0 325 326 A1 is known. With the adjusting element shown there, a comb device with respect to a cutting device is displaceable. By turning the adjusting element, the comb device is displaced, thus adjusting the cutting length of the hair to be cut. The adjusting element is coupled via a Schraubrillenkupplung with the comb device, so that a rotational movement of the adjusting device is converted into a translational displacement movement of the combing device. A disadvantage of such a hair and / or beard trimmer is that provided in the Einstellele ment screw groove leads to a high frictional force between an engaging in the screw groove projection and the screw groove, whereby the setting of the comb device is difficult by turning the adjustment.

moreover acts when turning the adjustment one in the direction of the axis of rotation the adjusting element acting force. This force must be absorbed by the housing it being between the adjusting element and the housing as well to an increased Friction or increased Wear come can. Especially if several such rotatable adjusting elements can be arranged directly adjacent to each other on the housing, it can Therefore, upon rotation of one of the adjusting elements due to in the direction of the axis of rotation acting force to block or to a binding another adjoining adjuster come so that this no more or only under increased Force is rotatable.

Out the document DE-AS 19 05 44 is a hair and / or beard trimmer with two superimposed inserts known to be comb-like with Cutting edges are provided, wherein the cutting by an oscillating Movement of the two inserts is carried out against each other, so that the cutting edges move towards each other. One of the Cutting inserts is opposite the other inserts displaceable in one direction at right angles to the direction of the oscillating motion formed to the hair length of the adjust the hair to be cut.

It The object of the present invention is to provide a hair and / or beard trimmer in which by means of a rotatable annular adjustment a translational displacement movement of a working member is achieved. A further object of the present invention is that the working member (s) the hair and / or beard trimmer with little effort is adjustable and that the adjustment or the hair and / or Beard trimmer subject to low wear. Furthermore, an object of the present invention is that a plurality of adjusting elements on the housing can be provided without any mutual blocking or binding occur.

SUMMARY THE INVENTION

These Task is by the hair and / or beard trimmer according to claim 1 solved.

Further advantageous embodiments of the invention will become apparent from the dependent claims as well as the following description and the drawing.

According to the invention a hair and / or beard trimmer for cutting hair is provided which has a housing of a cutting device with at least one cutting element and at least one working member. The working member is designed to be translationally displaceable with respect to the cutting element. To set the working limb is provided around the housing rotatable annular adjustment member which is coupled to the working member. The adjusting element is connected to a worm thread via a gear or gear transmission, wherein the worm thread is coupled to the working member to implement a rotational movement in the translational displacement movement of the working member.

The according to the invention and / or beard trimmer allows it by turning an adjustment on the housing or translate several working elements translationally against the housing. Thereby can Adjustments made to the function of the hair and / or beard trimmer become. The provision of the gear transmission and the worm thread serves to the rotational movement of the adjusting element to a displacement movement implement the working member, and has the advantage that the adjustment and / or the working member as possible low frictional forces are subjected, so that the wear of the elements as possible is reduced. Furthermore, this makes it possible to use the working member to adjust a small force with the help of the adjustment. About that In addition, no force acts on the adjusting element in the direction parallel to the axis of rotation, such as at the o.a. Hair and / or beard trimmer after the Prior art, so as to provide as possible low-friction storage of the adjustment can be dispensed with.

It Furthermore, a rotatably mounted coupling element can be provided, that carries the worm thread and provided with a pinion, wherein the pinion with a in the annular Adjusting element arranged inner ring gear cooperates, so that a rotation of the adjusting element to the rotational movement of the worm thread leads. This represents a possible Embodiment of the gear transmission, the structurally simple design is and when using the hair and / or beard trimmer in the Practice is very robust.

According to one embodiment According to the invention, the working member comprises a comb device to a hair length, on which the hair should be cut, depending on the translational displacement adjust.

In an alternative embodiment the working member comprises a further cutting element which is against the cutting element is oscillatingly movable for cutting, wherein by the translational displacement movement in a direction perpendicular for oscillating movement a cutting length is variable with which the cutting element the hair cuts.

According to one further alternative embodiment the cutting element comprises a plurality of cutting edges, wherein the working member a thinning plate which is designed so that depends on the translational Shift all or part of the multiple cutting edges or the individual cutting edges are completely or partially covered can, so they are correspondingly with more or less hair to be cut can get in contact. That way you can thinned the hair to be cut become. In particular, the thinning plate may be formed like a comb embodiment of the hair and / or beard trimmer comprises a further rotatable, annular adjusting element for moving another, different from the working member Working member. The adjusting element and the further adjusting element are arranged directly adjacent to each other on the housing.

The adjacent arrangement of the adjusting elements is possible because When turning the adjustment no force on the adjustment in Direction parallel to the axis of rotation acts. That's why it is also possible, to arrange several such adjustment elements one above the other along the housing, without to separate them constructively.

The Hair and / or beard trimmer may comprise a drive unit, which is substantially in the interior the rotatable adjusting element is provided in order to save space Arrangement of the elements of the hair and / or beard trimmer to achieve.

Further Features of the invention are the disclosed objects and Removable or are for the person skilled in the art from the following detailed description of embodiments and the attached Drawings visible.

DESCRIPTION THE DRAWINGS

A preferred embodiment will be explained in more detail with reference to the accompanying drawings. It demonstrate:

1 an embodiment of a hair and / or beard trimmer according to the invention in the assembled state;

2 an exploded view of the upper part of the hair and / or beard trimmer according to the invention;

3 a part of the mechanism for moving a thinning plate of the invention Hair and / or beard trimmer;

4 the coupling of the mechanics after 3 with the adjusting element of the hair and / or beard trimmer according to the invention; and

5 a further view of the housing of the hair and / or beard trimmer according to the invention without adjustment and without cutting device.

DESCRIPTION THE PREFERRED EMBODIMENTS

In 1 is a view of an embodiment of a hair and / or beard trimmer according to the invention shown. The hair and / or beard trimmer comprises a housing 1 with a base part 2 and cover 3 pointing to the base part 2 is attached. Between the base part 2 the housing and the cover 3 is a rotatable, annular adjusting element 4 so absorbable that it is against displacement in the direction of its axis of rotation between the base part 2 and the cover part 3 of the housing 1 is held, but is rotatable.

On the cover 3 of the housing 1 is a sliding comb device 5 attached, with which the cut length of the hair to be cut can be adjusted. The comb device 5 can by pulling or pressing in the on the cover 3 provided guide elements 6 be moved.

The cover part 3 points to the base part 2 opposite end to a slot-shaped opening through which a cutting device 7 reaches with cutting elements. The cutting is performed by the cutting device 7 In operation with hair or whiskers is brought into contact, which cuts the cutting device.

In 2 an exploded view of the hair and / or beard trimmer according to the invention is shown. It can be seen that within the cover 3 the cutting device 7 is receivable. Immediately adjacent to the cutting device may be a thinning plate 8th be provided, which is the cutting device 7 covering and against the cutting device 7 is formed displaceable. The thinning plate 8th Can via movable support elements 9 be moved in the direction of the longitudinal axis of the hair and / or beard trimmer, to realize by sliding on the cutter a thinning function.

The cutting device 7 has two cutting elements (not shown), which are formed comb-like, so that tines of the comb-like structure forming cutting edges. The two cutting elements lie one above the other and oscillate to one another, so that the cutting edges of the two cutting elements move against each other for cutting. The thinning plate 8th is now displaceable perpendicular to the direction of the oscillating movement and is designed to increase or decrease the area in which hair can be cut. This can be done, for example, by a comb-like structure of the thinning plate 8th can be achieved, covering the parts of the cutting edges of the cutting device, so as to reduce the entire cutting area for hair. Also, the thinning plate can reduce the area of the individual cutting edges in which hair is cut by the thinning plate 8th limits the penetration of the number of hairs between the tines of the cutting elements. With regard to a detailed embodiment of the thinning plate 8th Reference is made to the prior art. The hair and / or beard trimmer according to the invention can be provided with all known designs of thinning plates.

In 3 is the thinning plate 8th and the mechanics shown with the thinning plate 8th against the cutting device 7 can be moved. The thinning plate 8th has two support elements with pins 10 on, in forks of two arms of a support element 9 intervene, leaving the thinning plate 8th is held pivotally on the arms. The carrier element 9 is with a threaded element 11 coupled, so that a displacement of the threaded element by the support element 9 is recorded.

The threaded element 11 is with a worm thread 12 a coupling element 13 connected so that upon rotation of the worm thread 12 the threaded element 11 with the carrier element 9 and the thinning plate 8th ver is pushed. The coupling element 13 is rotatable in the housing 1 held, however, is substantially stationary, so it is not along its axis of rotation relative to the housing 1 is displaceable. The location of the thinning plate 8th is thus via a rotation of the coupling element 13 adjustable. The coupling element 13 also has a pinion 14 on, over which the coupling element 13 can be turned.

In 4 is shown as a rotation of the annular adjusting element 4 to a rotation of the coupling element 13 leads and thus by the rotation of the adjustment 4 the thinning plate 8th can be moved. This is the adjustment 4 in a segment of the inner surface with an inner ring gear 15 provided on at least a part of the inner surface of the adjusting element 4 is trained. Of course, the inner ring gear 15 also on the entire circumference of the interior be arranged surface of the adjustment. The inner ring gear 15 is arranged so that it is in the pinion 14 of the coupling element 13 engages, allowing a rotational movement of the adjusting element 4 causes a rotation of the coupling element.

About the size of the segment of the internal gear ring 15 can be the length of the shift range of the thinning plate 8th be specified. In addition, to the twisting movement of the adjustment 4 to limit, stops 16 on the adjusting element 4 provided with corresponding stops (not shown) on the housing 1 so cooperate, that the rotation of the adjusting element 4 is possible only in a certain area defined by the stops. Furthermore, locking slots 17 be provided to the adjustment 4 engage in certain positions by means of locking elements (not shown) to desired preferred positions of Ausdünnplatte 8th to fix.

That through the inner ring gear 15 and the pinion 14 formed gear transmission can be designed in various ways, the illustrated here is only an advantageous example. The gear transmission and the dimensioning of the worm thread 12 and the threaded element 11 are chosen so that the Ausdünnplatte 8th with little effort by turning the adjustment 4 lets move. This allows a user of the hair and / or beard trimmer the adjustment 4 also turn with wet fingers.

In order to enable a space-saving arrangement of the elements of the hair and / or beard trimmer, a drive unit ( 19 ) for operating the cutting device within the annular adjusting element 4 intended.

In a further embodiment (not shown), a plurality of adjustment elements can also be used 4 along the housing 1 between the base part 2 and the cover part 3 be provided with which a plurality of sliding workpieces can be operated. Because the adjustment elements 4 are exposed by the gear transmission during rotation no force along the axis of rotation, these can easily between the base part 2 and the cover part 3 of the housing 1 be arranged without the adjustment must be separated from each other by a separating element. Also, the coupling between the adjusting element and the respective translationally displaceable working member can be realized in a space-saving manner so that the combination of a plurality of translationally displaceable working members in a housing can be achieved in a constructive manner in a simple manner.

In 5 is the case 1 without adjustment element 4 and cover 3 shown. It can be seen that the base part 2 of the housing 1 an opening 18 through which the pinion 14 of the coupling element 13 is accessible to the inner ring gear 15 of the adjusting element 4 co. By the opening 18 is selected in a size in which only the pinion 14 through the inner ring gear 15 is accessible, penetration of dirt or cut hair in the gear transmission can be largely avoided. Also, the case faces 1 at the position of the adjusting element 4 a guide surface, so that upon rotation of the adjusting element 4 around the case 1 the inner surface of the adjusting element 4 on the outer surface of the base part 2 of the housing 1 along slides.

Instead of the translational displacement of the thinning plate 8th It is also possible to provide other working members, which by means of a rotation of a respective adjusting element 4 translational with respect to the cutting device or the housing 1 can be moved, such as a comb device for adjusting the cutting length, one of the cutting elements of the cutting device, etc.

Claims (7)

Hair and / or beard trimmer for cutting hair, comprising: a housing ( 1 ); a cutting device ( 7 ) having at least one cutting element; at least one working member ( 8th ), which is translationally displaceable relative to the cutting element, one around the housing ( 1 ) rotatable annular adjusting element ( 4 ), with the working member ( 8th ), characterized in that the adjusting element ( 4 ) via a gear with a worm thread ( 12 ), and the worm thread ( 12 ) with the working member ( 8th ) is coupled to a rotational movement in the translational displacement movement of the working member ( 8th ) implement. Hair and / or beard trimmer according to claim 1, characterized in that a rotatably mounted coupling element ( 13 ) is provided, the screw thread ( 12 ), and with a pinion ( 14 ), wherein the pinion ( 14 ) with a in the annular adjusting element ( 4 ) arranged inner ring gear ( 15 ) cooperates, so that a rotation of the adjusting element ( 4 ) to the rotational movement of the Schnekkengewindes ( 12 ) leads. Hair and / or beard trimmer according to claim 1 or 2, characterized in that the working member is a comb device for adjusting a hair length to which the hair is to be cut, depending on the translational Ver shift. Hair and / or beard trimmer according to claim 1 or 2, characterized characterized in that the working member is another cutting element which is movable against the cutting element for cutting, wherein a cutting length is variable by the translational displacement movement is to be cut with the hair. Hair clipper according to claim 1 or 2, characterized in that a plurality of cutting elements are provided, wherein the working member ( 8th ) a thinning plate ( 8th ) which is slidable in front of the cutting element depending on the translational displacement movement. Hair and / or beard trimmer according to one of claims 1 to 5, characterized in that a further rotatable, annular adjusting element for moving another, different from the working member Working member is provided, wherein the adjusting element and the further adjustment directly adjacent to each other casing are arranged. Hair clipper according to one of claims 1 to 6, characterized in that a drive unit ( 19 ) of the hair and / or beard trimmer substantially in the interior of the rotatable adjusting element ( 4 ) is provided.