摘要:
A damper suitable for buffering minor vibration is provided. By changing the shape of the damper in its radial direction or forming a plurality of caves in the damper, the coefficient of elasticity of damper in its axial directions can be changed. Relatively, the damping power of the damper in its different axes can be adjusted. Furthermore a damper structure comprises a damper and a clamp which allows a change in the amount and the placement of the contact surface area between the damper and the clamp to adjust the damping power of the damper structure in different axes.
摘要:
A method of making a multi-piece head suspension for a rigid disk drive. The method includes providing a first layer including a mounting region with an integral boss tower attached to a stiffener by one or more positioning tabs; attaching a second layer including a spring region to an interface between the mounting region and the stiffener; attaching a flexure to the stiffener; and removing the positioning tabs. The flexure can optionally be a portion of the second layer.
摘要:
A swage mount for a recording head suspension comprising a flange, and a hub made of a base metal extending from the flange, and at least an outer surface of the hub is plated with one or more layers of metal which provides increased retention torque, and/or increased cleanliness, and/or increased corrosion resistance. This invention may be used in conjunction with swage mounts that contain surface protrusions that are intentionally created (such as chromium nitride or chromium carbide protrusions) or not intentionally created (such as material inclusions or embedded media particles). In this case the metal plating helps prevent separation of the protrusions from the swage mount, thereby helping to prevent contamination.
摘要:
In a biaxial actuator for an optical pickup, rising pieces are bend-formed on a base member on which a lens holder having an objective lens is placed in such a way as to be able to displace in a focusing direction and in a tracking direction. The strength of the base member is increased by setting the width of the bend-formed portion at the root of each of the rising pieces in such a way as to be larger than the width of any other part of the associated rising piece. Preferably, the shape of a side elevation section of each of the rising pieces is set to be a trapezoid.
摘要:
Disclosed herein is a pickup feed mechanism in which the joint and the feed screw can engage with each other in a desirable manner. The joint (23) is fastened at one end to a slide member (21) that holds a pickup. The joint (23) has, at the other end, an engagement part (231) that is shaped like a projection. The engagement part (231) is located between a top cover (32) and the feed screw (24) and engaged with the screw portion (241) of the feed screw (24). The joint (23) also has, as the other end, a projection (232) that protrude away from the engagement part (231). The projection (232) abuts on the top cover (32) before the engagement part (231) disengages from the screw portion (241), when the joint (23) moves away from the screw portion (241) as it receive vibration or an impact. Thus, the engagement part (231) is prevented from coming out of the screw portion (241).
摘要:
An optical pickup angle adjusting mechanism of a beam angle adjusting structure consists of an external screw member and an internal screw part, while the external screw member is formed by integrating a flange engaging part engaging with a chassis to hold the edge of the chassis with two flanges, an external screw portion and a cylindrical press-fit part located between the flange engaging part and the external screw portion and the internal screw part includes a nut fixed to a pickup support part and a press-fit hole formed in the pickup support part coaxially with the nut for receiving the press-fit part in a close contact manner. Thus, a disk drive and a beam angle adjusting structure preventing adjusting screws from jolts can be obtained without increasing the number of components.
摘要:
The pickup device is used in a drive device of an optical disc and is opposed to the optical disc to irradiate a light beam from a light source onto an information recording surface of the optical disc. The pickup device has the actuator including the objective lens for condensing a light beam on the information recording surface of the optical disc, and irradiation of a light beam on the optical disc is controlled by moving the objective lens. Further, the pickup device has the optical system for directing a light beam, which is emitted from the light source, to a position below the objective lens. The optical system is placed at the same height level as the actuator. Therefore, as compared with the case where the optical system is provided below the actuator, the whole pickup can be smaller in thickness, and it is possible to provide a pickup device suitable for a thin drive device.
摘要:
Tracking coils are fixed on side surfaces of a lens holder and a magnetic substance of axisymmetric shape is fixed on a lower surface of the lens holder, being sandwiched by a focusing coil. Moreover, end portions of the magnetic substance are opposed to respective N-pole surfaces of permanent magnets serving as a focusing driving device and a tracking driving device together with the above coils. As a result, a neutral position holding system for an objective lens can be formed of these permanent magnets and the magnetic substance.
摘要:
An optical scanning device (1) for reading data stored on a rotating recording medium (2) having a scanning head (10); at least one guide device (11) for guiding the scanning head (10) along a predefined track; at least one bearing device (12) connected to the scanning head (10) for supporting the at least one guide device (11) and having at least one elastic prestressing device (13) to provide a static prestress on the at least one guide device (11) to prestress the same and the at least one bearing device (12) connected to the scanning head (10) against each other to eliminate a relative displacement.
摘要:
Suspension wires (3a) and (3c) are fixed to and bridged over a lens holder (1) and a fixing member (11) which is fixed to the housing. On each of side surfaces of the lens holder (1) is mounted a tilt bobbin (8) onto which a tilt coil (9) is wound. A second suspension wire (3b) is fixed to and bridged over the tilt bobbin (8) and the fixing member (11).