Vibrator motor
AssigneeWahl Clipper Corporation
InventorEdward D. Brill
Life of this patent
Estimating the term…
Abstract
A vibrator motor has a stationary piece and a moving piece hinged at one end. The moving piece does not generate substantial internal spring forces under the influence of an electromagnetic field, because it does not have a tail bracket. Other parts of conventional motors are also eliminated, so the motor is easier and less expensive to manufacture. In addition, the motor can be assembled and tuned before installation, which increases the ability to automate assembly.
Claims22
A vibrator motor comprising
- a stationary piece;
- and
- a moving piece hingedly secured to the stationary piece, the moving piece being hinged to the stationary piece such that the moving piece itself does not generate mechanical spring forces under the influence of an electromagnetic field.
A holder for a hinge having an axis, the hinge including a stationary piece and a moving piece hingedly secured to the stationary piece, the holder comprising
- a first surface that secures the stationary piece to a case or the like,
- the first surface not interfering with movement of the moving piece;
- a second surface that retains the moving piece axially with respect to the stationary piece;
- and
- a third surface that presses the moving piece radially with respect to the stationary piece.
A coil bobbin for a motor having a stationary piece, a moving piece and a movement control system, the bobbin comprising
- a winding portion for wrapping wire around the bobbin, the winding portion having an internal opening through which the stationary piece can be inserted;
- and
- an arm extending from the winding portion to which the movement control system can be connected.
A hair clipper comprising
- a case having at least one attachment point for securing the motor;
- a stationary blade on the case;
- a moving blade adjacent the stationary blade, the moving blade being adapted for reciprocation across the moving blade;
- and
- a motor secured to the case at the attachment point, the motor including,
- a stationary piece having a coil,
- a moving piece hingedly secured to the stationary piece, the moving piece being hinged to the stationary piece at one end such that the moving piece itself does not generate mechanical spring forces under the influence of an electromagnetic field,
- a driver on the other end of the moving piece, the driver and the moving blade being coupled for movement of the moving blade;
- and
- a movement control system connected to the stationary piece and the moving piece, the movement control system having at least one spring and at least one device for adjusting tension in the spring.
A method for manufacturing a hair clipper comprising
- molding a case having at least one motor attachment point,
- retaining a stationary blade on the case and locating a reciprocating blade adjacent the stationary blade,
- assembling a motor having a driver;
- and
- installing the assembled motor in the case and securing it at the attachment point, the driver causing the reciprocating blade to reciprocate when the motor is operated.
Dependencies are inferred from the claim text.