JPS58215768A - Arm locking device - Google Patents

Abstract

PURPOSE:To perform arm locking, by providing a member positioning an arm engaged to the pickup arm carried to the reproduction standby position and turning the arm to the releasing position in interlocking with the insertion of a jacket and to the standby position in interlocking with the drowing out. CONSTITUTION:A positioning lever 42 is provided freely turnably at the inside of a player main body 17. The lever 42 is energized with a coil spring 44 counterclockwise at all times. When the lever 42 is turned to be energized by a spring 44, the arm 12 is positioned and fixed to the reproducing standby position A by engaging the lever 42 to a pickup arm 12. When the jacket 15 containing a video disc 14 is inserted the lever 42 is pressed with a spine 30 and turned clockwise. Thus, the locking of the arm 12 is released and this state is maintained even after the jacket 15 is draw out. When the reproduction is finished, since the spine 30 is contained in the jacket 15 and extracted, the lever 42 is released for the regulation of position, and engaged to the arm 12 carried to the position A for positioning and fixing.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a recording disk reproducing device 1'', such as a video disk player, for example.In particular, the present invention relates to a recording disk reproducing device 1'', such as a video disk player. The present invention relates to an arm locking device for positioning a pickup arm, which is brought into contact with a recording disk and moves in the radial direction of the recording disk, to a playback standby position corresponding to the outer circumferential side of the recording disk.

[Technical background of the invention]

In video disc players and so-called record gray players that play audio records, the pickup element that picks up the video disc or record signal is mounted on a pickup arm and is moved in the radial direction of the video disc or record. It will be done.

FIG. 1 is a plan view showing the movement of a pickup arm in, for example, a video disc player. In the figure,
1 is a player body, 12 is a pickup arm, and 13 is a video disc placed on a turntable (not shown). As described above, the pickup arm 12 is loaded with a pickup element (not shown) and is transported in the radial direction of the video disc 13 in synchronization with the rotation of the video disc 13 by an arm transport device (not shown). Before starting playback, such a pickup arm 12 is at a position (4) (hereinafter referred to as
This position is called the playback standby position).

On the other hand, when the playback start operation is performed, the video disc 13
After the video disc 13 is transported to a predetermined position B (hereinafter referred to as the playback start position), its diameter is moved to a position C (hereinafter referred to as the playback stop position) where the playback is stopped in synchronization with the rotation of the video disc 13. conveyed in the direction. When playback is finished.

The pickup arm 12 is transported again to the playback standby position (4).

Note that when starting playback from the outer edge of the video disc 13, the playback start position (B) is naturally located at the outer edge of the video disc 13.
This corresponds to the recording start position of the outer peripheral edge of No. 3. In cases J and 4 in which the video disc 13 is played to the end, the playback stop position (C) is naturally at the innermost edge of the video disc 13. Note that the video disc player is designed so that playback can be started from the middle of the video disc 13 or stopped midway, and the playback start position and playback stop position can be arbitrarily selected. It has become. The playback start position and playback stop position are determined by, for example, a key provided on the player body 11. - Specified by the code. The above-mentioned key also determines whether to play the video disc 13 in the forward direction (from the outer circumference of the video disc 13 to the center) or in the reverse direction (from the center to the outer circumference of the video disc 13). is determined through the gate.

[Problems with background technology]

By the way, in the above-mentioned video disc player, if the birth is not performed, the pickup arm 12 must be positioned at the playback start position and fixed at this position.

Otherwise, if a mechanical vibration or the like is applied to the player body 11, the pickup arm 12 will be moved to the playback standby position (
5) I get annoyed E:) I end up moving. In such a state, for example, if the pickup arm 13 collides with the regulating part that regulates its movement range (range extending from the playback standby position to near the center of the video disc 13) and is damaged,
This collision may apply an impact to the cartridge, causing damage to the cartridge. Further, as the pickup arm 12 moves, a shock is also applied to the arm conveying device, and there is a possibility that this device will be damaged. Such problems are particularly likely to occur when transporting video disc players.

In order to eliminate the above-mentioned problems, clumsy measures have been devised in the past. For example, a coil spring may be used to always bias the vibrator and gum 12 toward the playback standby position (4). However, in the case of this configuration, when large vibrations are applied, the pickup arm 12 tends to move against the elastic force of the coil springs, and when the vibrations are no longer applied, the pickup arm 12 that was moving will move away from the coil. F
It may collide with the regulating part on the t(A) side and be damaged. The other configuration means are almost the same, and the pickup arm 1
2 could not be securely fixed, malfunctions were likely to occur, and even if it could be fixed, the structure was complicated.

[Purpose of the invention]

This invention has been made in order to address the above-mentioned circumstances, and it is possible to reliably position and fix the pickup arm in the playback standby position, and the positioning and fixing state is constant, and the arm opening and the arm opening are simple in construction. The purpose is to provide equipment.

The present invention will be explained using the embodiment shown in FIG. 9 and FIG. 1O, for example, and will be constructed as follows. A positioning lever 42 is rotatably provided inside the player main body 17. This lever 42 is always urged counterclockwise in the figure by a coil spring 44. When the positioning lever 42 is rotated in the direction urged by the coil spring 44, the lever 42 engages with the pickup arm 12, thereby positioning and fixing the pickup arm 12 at the playback standby position. be done. On the other hand, when the jacket 15 containing the video disc 14 is delivered, the positioning lever 42 is pushed by the spine 30 and rotated in the chronological direction in the figure. As a result, the pickup arm 12 is unlocked, and the pickup arm 12 is placed in the playback standby position (
You will be able to move from 5). In this state, even if the jacket 15 is removed, it will be too late! In 30 is Luya main body 1
7. Retained by remaining inside. When the regeneration is completed, the spine 30 is stored in the jacket 15 and taken out, so the positioning lever 42 is released from the position restriction.
It engages with the pickup arm 12 that has already been transported to the reproduction standby position, and positions and fixes the pickup arm 12 at this position.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

First, a schematic configuration of an example of a recording disk reproducing apparatus will be described using FIGS. 2 to 4 (,) to (C).

Note that FIGS. 2 to 4(a) to 4(C) show an example of a video disc player, for example.

In FIG. 2, 14 is a video disc, and 15 is a jacket. Video disc 14 has jacket 1
It is housed in the jacket 16 through an opening 16 formed on one side of the jacket 5.

17 is the player body, 9.18 is this player body 1
A jacket insertion opening is formed at 7, and 19 is various operation buttons.

When the video disc 14 is loaded into the player main body 17,
When detaching from the player body 17, remove the jacket 15.
This is done with the video disc 14 housed in the video disc 14, so that the inside of the video disc 14 is not touched directly.

FIG. 3 is a perspective view showing the internal structure of the player main body 17. In the figure, there is a turntable 2 on the chassis 2o.
1 is provided. A pair of rail-shaped guides 23.23 having recesses 22 are provided on both sides of the turn cheagle 21. The recesses 22 of the guides 23, 23 are set at a height that is aligned with the jacket insertion opening 18. The guide 23° 23 having such a structure has the function of guiding the jacket 15 inserted through the jacket insertion port 18 toward the back of the player body 17 and toward the jacket insertion port 18 side. Note that the guides 23, 23 are connected to the sub-chassis 24°2, which is provided upright on the chassis 20.
It is supported by 4. 4 around turntable 2
Two supports 25 are provided.

This support 25 will be described in detail later, but the video disc 1
It is necessary to support the outer periphery of the 4th class. The pickup arm 12 is supported by a carriage 26. This carriage 26 is supported by one of the sub-chassis 24, and the support part is supported by the guide pole 27.
conveyed along the The sub-chassis 24 is provided with a driving means 28 for conveying the carrying horn 26 along the guide pole 27. The pickup arm 12 is driven in the radial direction of the video disc 14 by this driving means 28. A chucking device 29 is provided at the back of the player body J7. The video disc 14 is held in the spine 30 and stored in the jacket 15. This spine 30 prevents the video disc 14 from falling off by blocking the opening 16 of the jacket 15. When the jacket J5 containing the video disc 14 and the spine 30 is inserted, the chucking device 29 fixes the spine 30, takes out the video disc 14 from the jacket 15, and performs a movement.

The operation of placing the video disc 14 on the turntable 21 and the operation of removing it from the player body 17 are shown in FIG.
This will be explained using a) # (b) and <c).

Jacket 15, video disc 14 and spine 30
When the jacket 15 is inserted through the jacket insertion opening 18 with the jacket 15 housed, the jacket 18 enters the inner part along the recess 22 of the guide 23. At this time, jacket 15
passes over the support 25. When the jacket 15 is further inserted, the chucking device f! I-,? 9, the spine 30 is held identified by this y y "Ying device" - 0 When this state is reached, the jacket 1
When the player body 17 is pulled out, only the video disc 13 and the armrest 30 are removed from the player body 17, as shown in A4 figure (b).
Inside /Aυ, the nitrogen jacket 15 is pulled out. At this time, video disc 14 and Snow! The inlet 30f is supported by a support 25.

After this, the turntable 21, which was located below the support body 25, rises. In this ascending position, the turntable 2 supports only the video disc 14, as shown in FIG. After this, the pickup arm 12 that had been positioned at the playback standby position (4) moves to the playback start position (B).
transported to. Then, the pickup arm 12 moves the video disc 14 in synchronization with the rotation of the turntable 2.
is conveyed in the radial direction, and the signal is picked up by a pickup element.

When the restraint is completed, the pickup arm 12 is transported to the decomposition standby position. Further, the turntable 21 is lowered, and the video disc 14 is again supported by the support 25 during the lowering. FIG. 4(b) shows this state.

In this state, by inserting an empty jacket 15, the video disc 14 and spine 30 can be stored in the tray 15 again.

Then, when the jacket 15 comes into contact with the chucking device 29, the fixed holding of the spine 30 by the chucking device 29 is removed, and the video disc 14 and the spine 30 are moved into the jacket as shown in FIG. 4(a). The player is taken out from the player main body 17 while being stored in the player 15.

Next, regarding the features of this invention, see Figure 5 to Figure 1.
This will be explained with reference to Figure 0. FIG. 5 is a perspective view showing a state in which the pickup arm z2 is positioned at the reproduction start position and is fixed at this position. The fixation of the pickup arm 12 is achieved by an arm lock mechanism 35, which is a feature of this invention. Figure wJ6 is a plan view showing a state in which the pickup arm 12 is fixed by the arm lock mechanism J.

In addition, 1 in Fig. 6 is the patent application filed by the applicant for the patent on May 9, 1981 as ``Chucking device''.
5'Mat; shows what is described in +lj56-69829. This chucking device has a shaft device 36,
The latch system 37 and canceller 38 provided on this shaft device 36 are irritated. - In addition, a vertical guide 39 and a horizontal guide 40 are provided separately from the axis 1136. It has four elastic plates. Further, the spring piece 42 is
has.

Means is provided to hold the cloth 4-in 30, which is held in a rectangular manner by such a chucking table 29, against the jacket 15 so that it does not fall out of the jacket 15. Moreover, a special shape is formed in the frame 9-in 30 to engage with the chi part 37, the vertical guide 39, the horizontal guide 40, and the elastic plate 41.

In this movement, the jacket 15 inserted into the player body 17 is first corrected in its lateral insertion position by the spring pieces 42. After this, canceller~
38 enters the jacket 15 through the opening 16 of the jacket 15, and the engagement between the S/4' in 30 and the jacket 15 is interrupted by h'+-. The latch member 37 also engages the spine 30 and holds the spine 30. Also,
- The vertical guides 39 come to sandwich the spine 30 from both sides, correcting the vertical posture of the spine 30. Further, the lateral guide 4o is secured to the IP inlet 3o to correct its lateral posture. Further, the elastic plate 4 is pushed by the spine 30 in a direction opposite to the elastic direction. As a result, the elastic plate 4 functions as a cushion for the insertion of the jacket 15, and also corrects the posture of the chucked spine 30 in the insertion direction. After this, spine 3
0 and the video disc 14 are left inside the player body 17, the nitrogen jacket 15 is pulled out, and II+ play is performed.

When the regeneration is finished and the desired jacket 15 is inserted, the jacket 15 and the spine 9-in 30 are engaged. Also, the spine 30 and the latch member 37 are no longer engaged, and the jacket 15 is pulled out. can be taken out with the cover 9-in 30 and the video disc 14 stored in the jacket 15.

Note that when the spine 30 and the latch member 32 are disengaged, the elastic plate 4 is moved by its elastic force. in 3
0 into the jacket 15. As a result, the Sunonin 30 and video 7j isk 14 can be easily stored in the jacket 15.

Incidentally, since such a chucking device 29 is not directly related to the gist of the present invention, a detailed explanation will be omitted.

Next, the arm lock means 35, which is a feature of the present invention, will be explained. FIG. 7 is a plan view of the arm locking means seen from above, and FIG. 8 is a side view. In addition, in FIGS. 7 and 8, the chucking device 29 is the shaft device 3.
Only 6 is shown. In FIGS. 7 and 8, a positioning lever 42 is provided near the regeneration standby position of the big ag arm 12. This positioner /4-42 is rotatably supported by a support plate 43 provided upright on the chassis 20. One end of a coil spring 44 is connected to one end of this positioning lever 42 . The other end of this coil spring 44 is connected to a protrusion 45 provided on the chassis 20. As a result, the positioning lever 42 is always biased counterclockwise in FIG. -45 and stopped.

At the other end of the positioning lever 42, there is a 4/9W part 421 that is inclined upward in the figure as it goes toward the shaft device 36 when the lever 42 is stopped by contacting the stopper 46.
is formed. This drive portion 42 is a portion that is pushed by the jacket 15 when the jacket 15 is inserted, as will be described in detail later. The tip portion 422 at the other end of the positioning lever 42 has a tip 422 when the lever 42 is
In the figure, when it is in contact with the pin-46 and stopped,
It extends upward. Although the details of this tip portion 422 will be described later, it is a portion involved in positioning the pickup arm 120, and hereinafter this portion will be referred to as a positioning portion.

111 corresponding to shaft mounting #36 of pick-up arm 12
An engagement piece 47 is provided on one surface 121. The retaining piece 47 is formed so as to extend toward the shaft device 36 and then bend downward in the figure.

Hereinafter, the portion 47 extending downward in this figure will be referred to as a retaining portion. When the pickup arm 12 is at the playback start position, the retaining piece 47 is secured to the pickup arm 1 by the retaining portion 47 being hooked to the positioning portion 422.
2 from moving from the playback start position.

The operation in the above configuration will be explained. FIG. 8 shows the pickup arm 12 positioned at the playback standby position (4),
This also indicates a state in which the video disc 14 is not present in the player body 17. In this state, the positioning lever 42 is pulled by the coil spring 44 and rotates counterclockwise in the figure until it comes into contact with the stopper 46. In this case, the retaining part 47 of the retaining piece 4'7 should be hooked on the positioning part 422, and the pickup arm 12 should be connected to the arrow shown in the figure.
3) Unable to move in any direction. Note that the movement of the pickup arm 12 in the direction of the arrow (G) shown in the figure is performed, for example, as follows. That is, when the pickup arm 12 is at the playback standby position (4), the carriage 2
6 is tIlt+chassis 2 that supports the guide pole 27
4 (see FIG. 7). Therefore, the pickup arm J2 cannot move in the direction of the arrow (A) shown in the figure. Note that the support part 24
If the above-mentioned position is also provided in the direction of the arrow (Y) shown in the figure, the positioning portion 422 can be brought into contact with the side surface 12 of the pickup arm 12, so that the pickup can be moved. The arm 12 is indicated by the arrow shown (
Y) direction can be prevented. Also,
As another method, the edge of the retaining piece 47 in the direction of arrow (A) may also extend downward in the figure in the same manner as the retaining portion 47.

In this state, when the jacket 15 is inserted, the spine 30 comes into contact with the drive section 42 and pushes the positioning lever 42 clockwise in the figure, as shown in FIG. As a result, the positioning lever 42 gradually rotates clockwise in the figure as the jacket 16 is inserted, and the positioning part 422 allows the positioning lever 42 to rotate clockwise in the figure as the jacket 16 is inserted.
1 restriction will be lifted. This temporary snow! In 3o is cha,
The snowboard 30 and the video disc 14 are left in the player body 17, and only the empty jacket 15 is pulled out. Even in this state, the positioning lever 42 is pushed by the spine 30 and is kept rotated counterclockwise, and does not return to the counterclockwise direction. Thereafter, as shown in FIG. 10, the video discs 1 and 4 are placed on the turntable 21, the pickup arm 12 is conveyed to the playback start position (B) specified by the keyboard as described above, and the playback button 48 is moved. A pick-a-ra f element such as the one shown in FIG. 1 moves down to perform reproduction.

When the playback begins, the video disc 14 is again placed on the support 2.
5 (see Figure 3), the pickup arm 12
is transported to the playback standby position (4). Thereafter, the desired jacket 15 is inserted, the spine 30 is released from being fixedly held by the chucking device, and the spine 30 and the video disc 14 are taken out while being housed in the jacket 15. In this case, when the jacket 15 begins to be pulled out, the positioning lever 42 gradually rotates counterclockwise in the figure, resulting in the state shown in FIG. 8. As a result, the pickup arm L2 is again positioned and fixed by the positioning portion 422.

This embodiment described in detail above has the following effects.

Since the pickup arm 12 is positioned and fixed at the playback standby position (5) by the engagement of the positioning lever 42 and the engagement piece 47, the fixation is reliably performed. Further, since the positioning lever 42 is driven by the switch 9-in 30, the positioning and fixing of the pickup arm I2 is released and fixed in accordance with the operation of loading the video disc 14 into the player body 17 and the operation of taking it out from the player body 17. '(c-Wi).Furthermore, since it is only necessary to provide the positioning lever 42, coil spring 44, etc., the number of parts can be reduced and the configuration can be simplified.

Note that the present invention is not limited to the above-mentioned embodiments, and various other modifications can be made without departing from the gist of the invention.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to provide an arm locking device that can reliably position the big arm and the big arm at the regeneration standby position, has a stable positioning and fixed state, and has a simple configuration.

[Brief explanation of the drawing]

Fig. 1 is a schematic plan view for explaining the transport operation of the pickup arm in the video disc player, Fig. 2 is a schematic perspective view showing an example of the external appearance of the video disc player, and Fig. 3 is the same as Fig. 2. 4(-) to (C) are side cutaway views for explaining the general operation of the video disc player shown in FIG. 2, and FIG. 5 is a schematic perspective view showing the inside of the video disc player shown in A schematic perspective view showing one embodiment of the arm lock device according to the invention, FIG. 6 is also a flat view, FIG. 7 is a plan view showing an enlarged view of the main part, and FIG. 8 is an enlarged view of the main part. FIGS. 9 and 10 are side views for explaining the operation of one embodiment, respectively. 12... Pick-up arm, 14... Video disc, 16... Jacket, 16... Surrounding part, 17
...Player body, 18...Shake, to insertion slot, 1
9...operation button, 2...turntable, 26...
・Carriage, 27...Guide pole, 28...Arm transfer device, 29...Cha, king device, 30...
・Spine, -Keiou...Arm lock mechanism, 36...
- Axis device, 42... Positioning lever, 43... Support plate, 44... Coil spring, 45... Projection, 46...
・Strike. Par, 47...1 cured piece, 48...reproduction side, 121
... Side surface, 241 ... Supporting part, 421 ... Drive sound f, 422 ... Positioning part, 47 No. ... Holding part. Acquaintance Agent Patent Attorney Takehiko Suzue Figure 7 Figure 9

Claims (1)

[Scope of Claims] (Recording disc stored in a jacket) The recording disc is played by inserting it into the playback device main body through the jacket insertion opening provided in the raw storage box main body and then pulling out the jacket. A recording disc that is loaded into the main body of the device and can be played, and when playback is completed, an empty jacket is inserted and then pulled out, and the recording disc is taken out with the recording disc stored in the jacket. The playback device is equipped with a backup element for boosting the signal from the recording disk, and is transported in the forward direction of the recording disk, and when the playback is completed, the recording disk is A pickup arm that is sent to a playback standby position corresponding to the outer circumferential side, and a pickup arm that is rotatably provided inside the main body of the playback device [)I
a first position for positioning l+'1i at the big-ara standby position transported to the I-scribe student e f machine position, and a rotating part for rotating to a second position where this positioning fixation can be released; an elastic force that urges the rotating member to rotate to the first position; and an elastic force that urges the rotating member to rotate to the second position in conjunction with an insertion operation of the jacket in which the recording disk is housed. The recording disk is rotated up to the position and maintained in this state with the recording disk loaded in the main body of the playback device, and when the recording disk is not removed, the jacket in which the recording disk is stored is an arm locking device comprising: a driving means for rotating the rotating member to the first position in conjunction with a removal operation of the arm locking device. (2) The driving means is stored in the jacket together with the recording disc so as to close an opening provided in the jacket for storing the recording disc in the jacket, and the recording disc is stored in the jacket. An arm lock device characterized in that, in a state where the arm lock device is loaded into the main device main body, the holding member is loaded into the playback device main body together with the recording disk.