JPH0348766Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Technical Field" The present invention relates to a device for regulating the downward movement of a so-called rotating descending disk clamper toward a compact disk in a compact disk player and adjusting the swing angle of the disk clamper. be.

"Prior Art and Its Problems" In the rotary lowering type disc clamper, when a tray carrying a compact disc is pushed into the mechanical part of the player, a trapezoidal wedge protruding from the tip of the tray is pressed against the disc clamper. The tongue piece provided at the rear end of the arm is pushed up, and as a result of this pushing up, the arm rotates around the axis and descends, causing the clamp part of the disc clamper to press the compact disc. However, since the tray at this time is supported by the upper and lower rollers, play may occur while the tray is being transferred, and the pushing stroke of the tray is not constant. For this reason, in some cases, the tray may not be pushed in enough, resulting in incomplete pressure of the clamper against the compact disk, or the tray may be pushed in too much, causing the clamper to press against the compact disk more than appropriate. As a result, variations occur in the pressing force applied by the clamper.

``Purpose of the invention'' The present invention assumes that the stroke of pushing the tray is unstable, and adjusts the swing angle of the disk clamper regardless of whether the tray is pushed in and regulates the downward movement to an appropriate position. It is an object of the present invention to provide a disk clamper swing angle adjusting device that always makes the pressing force on a compact disk by the clamper a positive pressure.

"Summary of the invention" In order to achieve the above object, in the disk clamper swing angle adjusting device of the present invention, an arm part and a clamp part are connected so as to be bendable, and the base part of the arm part is pivoted to the top chassis. The disk clamper is a disk clamper that rotates and descends when a tray containing compact disks is inserted into the disk clamper, and the top chassis is configured such that the swing angle of the arm section is variably adjusted and the downward movement of the arm section is controlled to an appropriate position. an adjustment mechanism is disposed in the arm section, and the arm section has an absorption mechanism that absorbs variations in the advancing stroke of the tray and adjusts the pressure applied to the compact disk by the clamp section to a positive pressure. There is.

"Embodiments of the invention" Preferred embodiments of the invention will be described below with reference to the drawings.

1 to 4 show a first embodiment of the present invention. In a case 1 of a compact disc player, a clamp mechanism 2 and a player main body 3 are disposed facing each other. A turntable 4 with a vertical axis protrudes from the center of the player body 3, and is used to mount a compact disc 5. This compact disc 5 is placed in a tray 6. A positioning pin 4a coaxially projects from the turntable 4 and is inserted into the central circular hole of the compact disc 5.

The clamp mechanism section 2 includes a disk clamper 7 and an adjustment mechanism section 8 for adjusting and regulating the downward movement of the disk clamper 7. The disk clamper 7 is rotatably mounted on a shaft 11 at one end of a punched portion 10 formed in the center of the top chassis 9. The disc clamper 7 has an arm portion 12 and a clamp portion 13 rotatably connected by a shaft 14, and the arm portion 12 is rotatably connected to the player body 3 side and in a direction away from the player body 3 side. In response, the clamp part 13
are now moving in unison.

The clamp part 13 is composed of a clamper holder 15, a clamper 16 loosely fitted inside the clamper holder 15, and a ball 17 press-fitted into the inner surface of the clamp part 13 on the axis of the clamper 16, and responds to the downward movement of the arm part 12. When the clamp part 13 moves integrally and comes into contact with the compact disc 5 side, the clamp part 1
3 is bent horizontally around the shaft 14 to a position where it presses the compact disk 5, and the clamper 16
moves upward within the clamper holder 15 and comes into contact with the ball 17, thereby clamping the compact disc 5.

The arm portion 12 includes an upper plate portion 18 and a lower plate portion 19 connected via a shaft 11.
A tension spring 21 is interposed between the upper plate part 18 and the lower plate part 19 through the window hole 20 of the upper plate part 18. This tension spring 21 urges the arm portion 12 in the side direction of the player main body 3, that is, in the clamping direction, and also absorbs variations in the advancing stroke of the tray 6 and prevents overramp by the clamp portion 13 connected to the arm portion 12. It has a relaxing effect. A stopper 22 is formed at the end of the lower plate part 19 opposite to the shaft 11 by bending it upward, and the upper plate part 18
The upper plate part 18 maintains its integrity by contacting the lower surface of the upper plate part 18. The rear end portion of the upper plate portion 18 is bent vertically downward and serves as an abutting portion 18a of the adjustment mechanism 8, which will be described later. Further, an arm portion 23 projects from the side end portion of the lower plate portion 19, and a tongue piece 24 is formed diagonally downward from the arm portion 23. When the tray 6 enters a predetermined position, a trapezoidal wedge 25 protruding from the tip of the tray 6 in the advancing direction comes into contact with a protrusion 26 of the tongue 24, causing the tongue 24 to move upward. This is for pushing up and rotating the arm portion 12 in the clamping direction via the shaft 11.

Tension springs 27 and 28 are interposed in the arm portion 12 to help rotate the arm portion 12 about the shaft 11 in a direction away from the player body 3 side, that is, in a non-clamping direction. spring 27
The arm part 12 is passed through the side notch 29 of the upper plate part 18, and has one end secured to a locking plate 30 passed to the punched part 10 of the top chassis 9, and the other end secured to the lower plate part 19 below the shaft 11. is biased in the non-clamping direction. Further, the spring 28 is connected to the window hole 31 of the upper plate portion 18.
through, one end is locked to the upper plate part 18 side, the other end is locked to the connecting plate 32 of the clamp part 13, and the clamp part 1
3 is biased so as to be aligned with the arm portion 12.

An adjustment mechanism section 8 is provided at the rear of the arm section 12 from the top chassis 9 side. In the first embodiment, this adjustment mechanism section 8 has a top chassis 9.
It consists of a support piece 33 that is a support member formed by bending the support piece 33 downward, and an adjustment screw 34 that is screwed into the support piece 33 toward the arm portion 12 side. The adjustment screw 34 comes into contact with the contact portion 18a of the arm portion 12 when the arm portion 12 rotates in the clamping direction and the clamp portion 13 clamps the compact disk 5, and restricts the subsequent downward movement of the arm portion 12. ing. Further, by tightening the adjustment screw 34 toward the arm portion 12 side or in a direction away from the arm portion 12 side, the contact position of the contact portion 18a that contacts the tip portion thereof can be changed. Arm part 12
The swing width can be adjusted freely.

The action will be explained below.

When the tray 6 carrying the compact disk 5 is automatically or manually fed to a predetermined position in the clamping mechanism section 7, a trapezoidal wedge 25 protruding from the front end of the tray 6 in the advancing direction forms the arm section 12. A tongue piece 24 provided on the lower plate part 19
It comes into contact with the protrusion 26 of. When the tray 6 is further fed in, the wedge 25 presses the protrusion 26 and pushes the tongue piece 24 upward. When the tongue piece 24 is pushed up, the upper plate part 18 is pulled by the action of the spring 21, and the arm part 12 begins to rotate around the shaft 11 toward the player main body 3, and the spring 27 accordingly releases the tension. Stretch against force. Further, the contact portion 18a of the arm portion also gradually rotates in the direction of the adjustment screw 38. When the arm portion 12 rotates, the clamp portion 13 responds to this by rotating the shaft 14 while keeping the clamp portion 13 in line with the upper plate portion 18 by the spring 28.
Using this as a fulcrum, move toward the player main body 3 side. When the wedge 25 continues to be pushed up toward the tongue 24 as the tray 6 enters, the clamp part 13 comes into contact with the compact disc 5 side, and the clamp part 13
is bent horizontally around the shaft 14 to a position where it presses the compact disc 5. At this time, the clamper 16 of the clamp portion 13 is inserted into the positioning pin 4a and comes into contact with the compact disc 5, and the clamper 16 is pressed by the action of the ball 17, so that the compact disc 5 is clamped. At this time,
The abutment part 18a, which rotates together with the rotation of the arm part 12, is attached to an adjustment screw 34 that has been adjusted to an appropriate position in advance.
makes contact with the tip of the Further, even if the wedge 25 of the tray 6 pushes up the tongue piece 24, the arm part 12 does not rotate because the abutment part 18a is stopped by the adjustment screw 34, but the arm part 12 does not rotate.
Only the lower plate part 19 constituting part 2 rotates slightly around the shaft 11 and expands against the tensile force of the spring 21. This expansion of the lower plate portion 19 absorbs variations in the advancing stroke of the tray 6 and alleviates overlump caused by the clamp portion 13. Therefore, the clamp section 13 is in a state where it clamps the compact disc 5 at an appropriate pressure.

FIG. 5 shows a second embodiment of the present invention. In this embodiment, the adjustment mechanism section 8 has a locking piece 35
and a tightening screw 36. Locking piece 35
is in an inverted U-shape, and a long hole 3 whose diameter is enlarged by the tightening screw 36 is provided at the upper part in contact with the top chassis 9.
7 is formed. Then, the tightening screw 36 is inserted through the elongated hole 37 and screwed onto the top chassis 9, and can be moved within the range of the elongated hole 37 in the direction of the arrow to adjust the contact position of the contact portion 18a. ing. Other configurations are similar to those in the first embodiment, so the same reference numerals are used and detailed explanations are omitted.

FIG. 6 shows a third embodiment of the present invention. In this embodiment, the position where the downward movement of the arm portion 12 is restricted is below the connecting portion 38 between the arm portion 12 and the clamp portion 13. Then, one end of the locking piece 39 is held by a hole 40 formed in the top chassis 9, and the locking piece 39 and the top chassis 9 are held together.
A spring 41 is interposed between them, and both are suspended by an adjustment screw 42. By adjusting the adjustment screw 42, the locking piece 39 moves in the direction of the arrow, so that an appropriate swing angle of the arm portion 12 can be set. Since the other configurations are similar to those of the first embodiment, the same reference numerals are given and detailed explanations are omitted.

FIG. 7 shows a fourth embodiment of the present invention. The regulating position of the arm part 12 according to this embodiment is also the same as in the third embodiment.
It is located below the connection part 38 with 3. The locking piece 43 is formed in an L-shape, and the upper surface of the tip portion 43a comes into contact with the connecting portion 38. And the locking piece 43
The upper end thereof is rotatably supported by a support piece 44 provided on the top chassis 9 side via a pin 45. Further, an arcuate long hole 46 is formed around the pin 45 at a position where the locking piece 43 contacts the support piece 44, and a tightening screw 47 is screwed into the support piece 44 through this long hole 46. The locking piece 43 rotates around the pin 45 within the range of the elongated hole 46 to adjust the swing angle of the arm portion 12, and then tightens the screw 47. Since the other configurations are similar to those of the first embodiment, the same reference numerals are given and detailed explanations are omitted.

FIG. 8 shows a fifth embodiment of the present invention. In this embodiment, a single adjustment screw regulates the downward movement of the arm section 12 and the swing angle of the arm section 12. This adjustment screw 48 has a head 48a with an enlarged diameter, and is inserted through a long hole 49 formed in the top chassis 9 to
The lower surface of the head 48a is in contact with the upper surface of the top chassis 9. Since the other configurations are similar to those of the first embodiment, the same reference numerals are given and detailed explanations are omitted.

"Effects of the Invention" As explained above, when using the disc clamper swing angle adjusting device according to the present invention, the swing angle of the disc clamper can be adjusted to an appropriate state, and its downward movement can be regulated at an appropriate position. , it is possible to always keep the pressing force of the clamper against the compact disk constant regardless of variations in the pushing stroke of the tray.

[Brief explanation of drawings]

FIG. 1 is a front view of a first implementation device and its surroundings of a disk clamper swing angle adjustment device according to the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a front view of the device shown in FIG. 1. The exploded perspective view of the parts, Figure 4, is
FIG. 1 is a front view of the device part, FIG. 5 is a front view of the second embodiment of the present invention, and FIG. 6 is a front view of the third embodiment of the present invention.
FIG. 7 is a front view of the fourth embodiment of the present invention, and FIG. 8 is a front view of the fifth embodiment of the present invention. 7...Disc clamper, 8...Adjustment mechanism section,
9...Topshashi, 11, 14...Axis, 12
. . . arm portion, 13 . . . clamper portion, 18 .

Claims (1)

[Claims for Utility Model Registration] (1) An arm portion and a clamp portion are connected in a bendable manner, and the base portion of the arm portion is pivotally connected to a top chassis and rotates downward when a tray containing a compact disk is entered. In the disc clamper, the top chassis is provided with an adjustment mechanism that variably adjusts the swing angle of the arm part and restricts the downward movement of the arm part at an appropriate position, and the tray A swing angle adjusting device for a disk clamper, comprising an absorption mechanism that absorbs variations in the approach stroke of the disk clamper and adjusts the pressure applied to the compact disk by the clamp portion to an appropriate pressure. (2) The disk clamper swing angle adjusting device according to claim 1, wherein the adjusting mechanism includes an adjusting screw and comes into contact with the base of the arm portion. (3) The disk clamper according to claim 1, wherein the adjustment mechanism is formed of a locking piece that is movable in the front-rear direction of the top chassis, and the locking piece comes into contact with the base of the arm portion. Swing angle adjustment device. (4) The adjustment mechanism is formed of a locking piece suspended from the top chassis side by a spring-biased adjustment screw, and the locking piece abuts a lower part of a connecting portion between the arm portion and the clamp portion. A disk clamper swing angle adjusting device according to claim 1 of the utility model registration claim. (5) A utility model registration claim in which the adjustment mechanism is formed of a locking piece that is rotatably supported on the top chassis side, and the locking piece abuts a lower part of a connecting portion between the arm portion and the clamp portion. range 1
The disk clamper swing angle adjustment device described in . (6) The adjustment mechanism includes an adjustment screw having an enlarged diameter head that is inserted through the top chassis and screwed together with the plate of the arm, and the enlarged diameter head of the adjustment screw is connected to the top surface of the top chassis. A swing angle adjusting device for a disk clamper as claimed in claim 1 of the utility model registration claim.