JPS6331277Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a video disc player in which a turntable and a motor move up and down as a unit in order to load a disc by inserting a tray containing a disc.

In this type of disk player, the stator of the motor is restricted from moving in the rotational direction and is required to be movable only in the vertical direction.

As an example of a configuration in which the motor is fixed in the rotational direction and can move freely only in the vertical direction, a guide hole is created at a location away from the center of the motor, and a rotation prevention pin is inserted from the chassis into this guide hole. There is a structure that engages the planting. In the case of the above structure, vertical movement cannot be achieved unless the diameter of the guide hole is necessarily larger than the shaft diameter of the pin. By the way, when the rotor, which is the driving side member of the motor, starts rotating, the stator, which is the stationary side member, will receive a reaction force from the rotor. The backlash caused by the difference in diameter vibrates, causing large mechanical noise.

The present invention was devised in view of the above-mentioned conventional situation.In a direct drive type player in which the turntable moves up and down to load discs, a through hole is provided in the stator of the motor. To provide a disk player in which a guide post set up from a chassis is inserted into a hole, and the stator is biased to be pressed against the guide post by a spring means so as to prevent rattling between the stator and the guide post. This is what I am trying to do.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of the main parts of a player to which the present invention is applied, in which 1 is a stator constituting a motor unit, and a coil 2 is disposed and supported on the surface 1A of the stator so as to face a rotor (not shown). There is.
In addition, a through hole 3 for pin engagement is formed in a part of the stator 1 so as to pass through it in the vertical direction, and a guide post for controlling rotation is installed in this hole 3 from a chassis (not shown). 4 is inserted and engaged. An allowable gap is provided between the inner diameter of the hole 3 and the outer diameter of the guide post 4 so that the stator 1 can move vertically in the figure. Reference numeral 5 denotes a tension spring, which is suspended between the stator 1 and a chassis (not shown), and applies a horizontal tensile force to the stator 1, thereby causing the inner peripheral wall 3A of the through hole 3 to tighten around the outer periphery of the pin 4. By press-contacting these holes 3 and pins 4,
This is designed to prevent rattling caused by the gap held between the two.

For example, as shown in FIG.
It is disposed so as to be in pressure contact with the inner wall 3A of. Incidentally, as shown in FIG. 3, the leaf spring 6 may be fixedly planted on a chassis (not shown) independently of the guide post 4 and arranged along the guide post. The plate spring 6 is used to prevent rattling caused by the gap maintained between the guide post 4 and the through hole 3 to allow vertical movement.

In the present invention, as mentioned above, by always biasing the stator in a fixed direction by the spring means, play is generated between the through hole of the stator and the stator rotation regulating pin inserted and engaged in this hole. Therefore, it is possible to provide a player that does not cause abnormalities when starting up.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the main parts showing an embodiment of the present invention, Fig. 2 is an enlarged plan view of the main parts shown in the embodiment of Fig. 1,
FIG. 3 is an enlarged side view of main parts showing another embodiment of the present invention. 1... Stator, 3... Through hole, 4... Guy post, 6... Leaf spring, 5... Tension spring.

Claims (1)

[Scope of utility model registration request] In a direct drive type player in which the turntable moves up and down to load discs, a through hole is formed in the stator of the motor, and a guide post raised from the chassis is inserted into this hole. A disk player in which the stator is biased by a spring means so as to press against the guide posts so as to prevent rattling between the guide posts.