摘要:
A domestic vibration apparatus, in particular a dry-shaver or hair trimmer, in which rotary movements of a two-pole permanent magnet (9) forming a rotor are converted into vibratory movements of a vibration tool by means of a lever system (13) which preloads the drive in such a way that the rotor (9) can oscillate about a rest position,t he two-pole permanent-magnet rotor (9) without pole-pieces being arranged in the U-shaped stator of a single-phase synchronous motor.
摘要:
A method for making the shaving head of a dry-shaving apparatus with an effective shaving area of a desired shape, in which a shear foil is mounted in an arcuate condition in a shaving-head frame without the cutter so that the foil assumes a free clamping curvature which is not influenced by the cutter, a normal-pressure distribution is applied perpendicular to the foil curvature which simulates the pressure distribution between the cutter and the foil in conformity with a desired effective shaving area, so that the shear foil experiences in said effective shaving area a deformation relative to the free clamping curvature, the simulated pretension curvature thus obtained corresponding to the desired normal-pressure distribution on the cutter in the desired effective shaving area relative to the shear foil.The cutting edges of the cutter are curved in conformity with the pretension curvature of the shear foil thus determined and the cutter, whose shape is in conformity with said pretension curvature, is pressed into the shear foil with the force which provides the desired normal-pressure distribution.
摘要:
A drive mechanism for a domestic vibration-type apparatus is provided, in which the rotor shaft (19) of a single-phase synchronous motor drives a cam-and-follower mechanism which converts the rotary motion of the rotor into a vibratory motion, the rotor and the stator having a main field direction (22) and (16), respectively. The longitudinal axis of the mirror-symmetrical cam extends at an angle to the main field direction (22) of the rotor. Rollers (31, 31a) which follow the cam (21) are arranged on a pivotal arm which is pivot about its central portion and a vibratory part (39) to be driven is arranged on the driving end (35) of this pivotal arm. As they cooperate with the cam the rollers are constantly in contact with the cam profile. At the end of the transmission path, which exhibits backlash, vibratory part (39) cooperates with a spring (38) which urges one of the rollers against the cam, causing the position of the cam relative to the direction of magnetization of the rotor to be changed so that the rotor is forced out of a position in which the direction of magnetization of the rotor and the main field direction of the rotor extend parallel to each other, by means of the spring (38), preferably in the positive direction. In this parallel position the vibratory part (39) is situated near of its reversal point. To obtain a further noise reduction a unidirectional blocking device is included.
摘要:
A domestic ice-cream maker comprises a refrigerated bowl-shaped container for an ice-cream mass; a rotatable stirring tool associated with such container for scraping off ice-cream freezing at a refrigerated surface of the container; and a single-phase synchronous motor for rotating the stirring tool, such motor having a maximum permissible operating temperature for making the ice-cream. A transmission path including a reduction mechanism extends between the synchronous motor and the stirring tool. Backlash is provided in the reduction mechanism as overload protection for the synchronous motor, the backlash acting in both directions of rotation of the motor and corresponding in each such direction of rotation to at least 10 revolutions of the motor, the motor, upon being blocked in either direction of rotation, reversing its direction of rotation and passing through the range of the backlash without exceeding its maximum permissible operating temperature.
摘要:
A vibratory dry-shaver comprises a shear foil having two longitudinal edges, and respective means to clamp the two longitudinal edges in place to cause the shear foil to assume a natural curvature, the tangents to such curvature at the two clamping means forming an acute angle with each other. A cutter is reciprocatingly movable along and adjacent to the shear foil, the cutting edge of the cutter having a curvature corresponding to that of the clamped, curved shear foil. The curved shear foil and the cutting edge of the cutter each have a hyperbolic cosine curvature according to the formula:y=c.multidot.cosh x/cwhere y indicates the distances of the individual cutting edge points from the x-axis, x is the coordinate in the direction of the width of the cutter, and c is a constant derived from the width 2b of the clamped shear foil and the height of the curvature h of the clamped shear foil.
摘要翻译:振动式干式剃须刀包括具有两个纵向边缘的剪切箔,以及将两个纵向边缘夹紧就位以使剪切箔呈现自然曲率的相应装置,两个夹紧装置处的这种曲率的切线形成锐角 与彼此。 切割器可沿剪切箔往复运动并且与剪切箔相邻,刀具的切割刃具有对应于夹紧的弯曲剪切箔的曲率的曲率。 弯曲剪切箔和刀具的切割刃各自具有根据以下公式的双曲余弦曲率:y = cxcosh x / c其中y表示各个切割边缘点与x轴的距离,x是坐标 切割器的宽度方向,c是从夹紧的剪切箔的宽度2b和夹紧的剪切箔的曲率h的高度导出的常数。
摘要:
A drive mechanism for a dry shaver comprising a shear foil and a cutter reciprocatory relative to the shear foil includes a single-phase synchronous motor having a drive shaft. A cam is mounted on the drive shaft, and a transmission roller is constantly in contact with the cam. The surface of at least one of the cam and the transmission roller is provided with a layer approximately 1 mm in thickness of an elastic material.
摘要:
The invention relates to a small electric household utensil for the production of foods by mixing by stirring from original components which are slightly liquid at the start of work, in the preparation of which foods the production temperature deviates from the ambient temperature, the temperature change in the original components which is required during the production process being achieved by means of a thermal energy dispenser, the thermal energy dispenser (6) bringing the inner wall (4a) of a pot-shaped container (4, 24) to the production temperature and a stirring tool (10) intermixing the production components during the production process. At least two pot-shaped containers (4, 24) are arranged in a common surrounding container (3), in which there are thermal energy dispensers (6) in contact with the containers (4, 24); an individual stirring tool (10) is assigned to each pot-shaped container (4, 24); the relative speed, necessary for mixing, of the respective stirring tool in relation to the assigned pot-shaped container (4, 24) can be achieved by means of independent drive devices (9, 28) with their own electric motors (16).
摘要:
An electrically driven vibrating apparatus such as a dry shaver comprises a single-phase synchronous motor having a drive shaft, together with a part to be reciprocated. A cam is rotated by the motor drive shaft, and a lever is journalled about a pivot and is in contact with the part to be reciprocated. A pressure roller is mounted on the lever and is in constant contact with the cam profile. A compression spring acts on the lever to urge the pressure roller towards the cam.
摘要:
The invention relates to an epilating device having epilating rollers which are drivable in opposite directions, at the periphery have a wave-shaped cross-sectional profile, mesh together at their periphery by their cross-sectional profiles and are drivable by means of a motor, a single-phase synchronous motor without a non-reverse mechanism being provided for the purpose of driving an uneven number of epilating rollers.
摘要:
The invention relates to a rotor (10) for an electric motor, in particular for a multi-phase or single-phase electric motor, comprising a permanent-magnetic ceramic rotor cylinder (1) made of an imperforate solid material and provided with moulded-on plastic elements (5) on at least the cylinder end faces (3), which elements carry axially projecting shaft portions (6) for rotatably journalling the rotor (10), the cylinder end faces (3) being formed with recesses and the moulded-on plastic elements (5) engaging in the recesses (4).