JPS5857824B2 - video disc player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a video disc player in which a soft video disc stored in an envelope can be set in the player without touching it directly, and can be reset from the player. When loading and unloading, video discs,
This invention relates to a video disc player designed to eliminate the chance of damage to the envelope or pickup.

As a video disc player suitable for a dead-type video disc system, the applicant first inserts an envelope containing a video disc into an envelope input space, and then extracts only the envelope to insert a video disc into the space. , and after the completion of the play operation of the video disc, from now on, by inserting an empty envelope into said space, the video disc is stored therein, and by removing this envelope - the video cycle is completed. Disc players have been proposed, but one of them (Japanese Patent Application No. 88011/1983) requires the operation of a large lid to open and close the envelope space in order to set the video disc to a playback standby state. and the other one (Patent Application No. 51-23406
No.) is designed to control an operator instead of the lid.

Although this invention belongs to the latter type, it further simplifies the structure to prevent the above-mentioned chance of damage.

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

Fig. 1 is a perspective view with the lid partially cut out showing the play state, Fig. 2 is a perspective view with the lid partially cut away with the operator set at the reference position, and Fig. 3 is a perspective view with the lid partially cut away showing the play state. FIG. 4 is a plan view of an envelope containing a video disc, and FIG. 5 is a sectional view showing the regulator in different operating states.

This player has one audio channel selection button B1 on the operator so that it can be operated from outside the cabinet CAB.
．． B2, a play button B3, a select button B4, a stop button B5, and a power-on button B6, and a lid L is rotatably attached to the cabinet by a hinge.

This lid opens and closes the envelope loading space, which will be described later, but its function is to prevent dirt from entering through this space when the player is in use or not. If it is not used, a configuration may be adopted in which it is not provided.

The envelope E has an entrance/exit and a space through which the video disc VD can be taken in and out, and the upper and lower members E1 and B2 defining the upper and lower sides of the space expose a part of the video disc stored near the entrance/exit. and are configured to be expanded from each other.

The envelope loading space R into which the envelope is inserted with the entrance/exit thereof leading is defined by side plates R1, R2, a top plate R3, a bottom plate R4, and a rear plate (not shown).

The entrance and exit are the upper and lower surface plates R3, R4 and the side plate R1.
, R2, and the entry of the envelope from this entrance/exit is controlled by the movement of a regulator S, which will be described later.

Next, the lower surface R4 will be explained in detail.

This lower plate has a platform R41 on which the lower member of the envelope is placed on the front part, gun turret parts R4□, R42 formed on the left and right rear sides of the platform R41, and an inclined part R43° R43 formed between the platform and the turret part. and
In addition, a rear platform R45 is provided at the rear thereof.

Further, the bottom plate has a recessed portion R4 whose bottom cylinder forms a stationary table T so as to be sandwiched between the two platforms.
4, the diameter of which is selected so that a video disk clamped by the clamping means to be described later can fall onto the stationary table when the clamping means is released, and the recess has a diameter on the right side wall thereof. are omitted to allow the pickup to move forward and backward.

The stationary table T is provided with a through hole in the center thereof through which a rotary table (described later) passes through, and a through hole through which a push-up member (described later) advances and retreats, and an exhaust hole on the circumferential side thereof.

When an envelope is introduced into the envelope input space from the entrance/exit, the upper and lower members forming the envelope and the upper and lower plates R3 and R4 work together, so that during the envelope input, the upper and lower members collide with the lower surface of the upper plate and the platform. It is expanded by the distance between the upper eyes of R42.

The upper surface plate R3 is provided with a through hole R3a1 in the center thereof through which a suppressing member, which will be described later, passes, and cutouts R and Ib on the right side of the hole R3a1 that allow the above-mentioned pickup to move forward and backward,
Further, in front of the roller R3, which supports a video disc pushed up by a push-up piece to be described later, is supported so as to rotate and hang itself.

Further, the side plate R1 is provided with a guide hole for moving the pickup forward and backward.

The details of the configuration related to such an envelope input space will not be further explained as they are outside the scope of the present invention, but if necessary, please refer to the above-mentioned Japanese Patent Application No. 1988-880.
The specification of No. 11 has some information regarding this point, so please refer to it.

Incidentally, through holes H1 and H2 for moving the regulator S forward and backward are bored in the gun turret section and the top plate, respectively.

As mainly shown in FIG. 3, this player has, as its main internal mechanisms, a clamping means CL at the rear of the envelope input space, a holding means HO at the center of the stationary table, and a pushing device pushed up in front of the stationary table. It is provided with a means PR and a regulator control means CM for controlling the above-mentioned regulator S, and a power transmission means MT for driving each of these means by operating the operator.

In addition, a pickup driving means DR and an operation mode setting means MO are provided, but since these are unnecessary for understanding the present invention, their explanation will be omitted.

The clamping means CL includes a support piece 1 fixed to the chassis CH.
and a rotating lever 3 provided with a roller 2, and a spring (not shown) stretched between the lever and the chassis to bias the roller of the rotating lever so as to come into pressure contact with the support piece.
and a control pin 4 capable of controlling the lever against this spring, and the rotating lever 3 of this clamping means is moved away from the support piece during play as shown in FIG. It is controlled by the pin, and is controlled by the spring so as to come into pressure contact with the support piece when not in play.

In this pressure-contact state, when the envelope containing the video disc is inserted into the above-mentioned envelope insertion space, the exposed video disc is bitten between the support piece and the roller of the rotating lever.

Then, if the envelope is removed in the opposite direction to the insertion direction, the video disc can only be inserted into the space by making the above-mentioned clamping force larger than the frictional force exerted between the video disc and the envelope. You can leave it behind.

The pin is fixed to a rotating lever of a holding means, which will be described later, and is controlled in response to its operation.

The holding means HO includes a rotary table 5 that is rotated by a motor (not shown) and is passed through a through hole provided in the above-mentioned stationary table T, and a rotary table 5 that is moved in the axial direction and holds a video disc VD together with the rotary table. It is equipped with a pressing member 6 that sandwiches the center hole, and a rotating lever 7 that is pivotally supported by a support shaft 7a and supports the pressing member freely in the rotational direction at one end, and this holding means does not rotate during play. The table and the suppressing member are coupled so as to be able to rotate while sandwiching the video disc, and the push-up member is placed at a distance above the rotary table when not playing, so as not to block the movement of the envelope into and out of the envelope insertion space. It is made sure that there is no such thing.

The push-up means PR includes a push-up member 8, a rotating lever 9 that fixes the push-up member at one end and rotates about a support shaft 9a, and a tension spring whose one end is stretched over the other end of the pivot lever. 10, and the other end of this spring is stretched to one end,
It is equipped with a V-shaped lever 11 that rotates around a support shaft 11a, and the pushing member of this pushing up means is placed below the stationary table T during play, and when not playing, inserts the video disc into the above-mentioned envelope. Push it up near the entrance of the space.

The above-mentioned regulator control means CM is a 1/lead 12 having the above-mentioned regulator S at one end, and the other end is provided so as to face a lever to be described later. It is placed in the through hole H1 provided in R4□, or it is made to protrude from this through hole and further enter into the through hole H2 provided in the above-mentioned top plate R3.

This release is a type of direction changing means, and the same purpose can be achieved even if a lever with several rotations, a slide pin, a slide plate, etc. are used.

Next, the power transmission means MT driven by the above-mentioned operator will be explained.

This power transmission means includes, as its main components, a cam 14 that is rotated by an operator, a first transmission lever 15 that is driven by this cam, and a second transmission lever 16 that is driven by this lever. It is equipped with

The operation of the operator is carried out through this power transmission means by the above-mentioned clamping means CL, holding means HO1, pushing means PR,
and is transmitted to the control means CM to change the settings from the first setting position to the second setting position or vice versa.

The cam 14 has a large diameter portion 14a and a small diameter portion 1 on its circumferential side.
4b, and the large diameter portion is provided with Surin N 4 in the radial direction.
Equipped with c.

The continuous section 14d from the small diameter part to the large diameter part is the first
It is formed to match the outer diameter of a first pin 15a provided at one end of the transmission lever 15, and can be engaged with the first pin.

The slit is formed along a line with a radius R from the center of the pin as measured when the first pin is engaged with the retaining portion 14d of the cam, and the slit has a slit disposed close to the first pin. Then, the second pin 15b is engaged and disengaged.

As described above, the first transmission lever 15 is provided with the first and second pins 15a and 15b at one end thereof,
The other end is provided with a pin 15c that engages with a long hole (not shown) provided in the arm of the V-shaped lever 11, and the pin 16a provided in the second transmission lever is inserted in the intermediate portion thereof. The first transmission lever is provided with a through hole that allows the first pin 15a to always come into pressure contact with the cam by a tension spring 17 stretched between the pin 15c and the open end of the arm. It is like that.

The second transmission lever 16 is a substantially inverted-shaped rotating lever whose central portion is pivotally supported by a fulcrum 16b, and includes a pin 16a that engages with the first transmission lever 15 at its intermediate portion. .

Also, a connector 1 is attached to the open end of one wing of the second transmission lever.
6c is attached, and the other end of its connector is fixed to the rotating lever 7 of the holding means.

The open end of the first transmission lever 15 is connected to the release 1 described above.
2, and when this lever is in the first setting position, the regulator S provided on the release is in the envelope input space R.
The envelope does not protrude into the entrance/exit of the space (Fig. 5A), and the envelope can freely enter and exit this space.

When the operator is operated with the envelope inserted into this space, at the beginning of the operation, the regulator S is set at a predetermined position on the envelope, for example, part E3 in the shaded area in FIG.
This abuts against and prevents further rotation of this operator.

After extracting the envelope from the above-mentioned space, there is nothing to prevent the regulator from protruding, so turning the operator thereby forces said lever 15 into the second setting position, so that the regulator is in the second position. As shown in Figure 5, it is inserted into the through hole H2 of the top plate R3 via the release 12.

Therefore, even if an attempt is made to insert the envelope into the space R at this time, the introduction will be blocked by this regulator.

Although this regulator is shown as having a pin shape, it may also be a plate.

In that case, the shapes of the through holes H1 and H2 must also match.

Next, the operation area of the operator will be briefly explained.

The operator can control reciprocating rotation from the reference position A in FIG. 2 via intermediate positions B and C to the rotation stop position, and in the opposite direction.

In the sections A and B, the clamping means CL, the holding means HO, the pushing means PR, and the control means CM are respectively controlled via the power transmission means MT, and in the sections A and C, the pickup is moved to its reset position and the video disc. is driven between the outermost circumferential groove facing positions, and at position C, the play time state is set.

When the play button B3 is pressed at the C position, the pickup is pressed against the video disc by the operation mode setting means MO to set the play operation, and the operator is automatically fed toward the position.

When the pickup reaches the innermost groove of the video disc,
That is, when the operator reaches the D position, this is detected and the play state is canceled.

Thus, the operator can be manually returned to the A position direction.

The details of the operation when the operator is driven from the A position to the B position and in the opposite direction will be described below.

When the operator is in position A as shown in FIG. 2, the player can freely move the envelope containing the video disc into and out of the player.

That is, when the operator indicates the A position, the engaging portion 14d of the cam engages the first pin 15a, and the slit 14c engages the second pin 15b. Each transmission lever 15,16 is placed in a first setting position.

At that time, the rotating lever 3 of the clamping means CL is in pressure contact with the support piece 1, the pressing member 6 of the holding means HO is separated from the rotary table 5, and the pushing member 8 of the pushing means PR is in the upper position. Furthermore, the regulator is in the state shown in FIG. 5A.

Therefore, the envelope can be freely moved in and out of the input space.

In this state, when the envelope containing the video disc is pushed into the loading space to its final loading position, the exposed video disc is clamped by the clamping means CL.

The envelope is then pulled out in the opposite direction, leaving only the video disc within it in the player.

When the envelope is inside the player, the operator whose rotation is prevented as described above becomes rotatable as described above by removing the envelope.

Therefore, when this operator K is rotated from position A to position B, the slit 14c of the cam pushes the second pin 15b engaged with it to the left as shown in FIG. to move the second transmission lever 16 from the first setting position to the second setting position.
Move it to the set position.

Then, the rotating lever 3 of the clamping means is separated from the support piece 1, the pressing member 6 of the holding means is engaged with the rotary table 5, the pushing up member 8 of the pushing up means is positioned below the stationary table T, and A regulator S connected to the control means is locked so as to close the entrance/exit of the envelope input space.

In the middle of such a series of operations, the video disc, which had been held by the holding means and pushed up by the pushing up means, is released from the holding and pushed up, and falls onto the stationary table, and its center is pushed up by the holding means. is held.

The spring 17 stretched between the first transmission lever 15 and the ■-shaped lever 11 is used as a so-called over-center spring, and the first pin provided on the first transmission lever is connected to the small diameter portion of the cam. Press stably.

This first transmission lever can then itself operate without a fixed fulcrum or guide.

Next, in connection with the operation of rotating the operator K from the B position to the A position, the operation of restoring the second transmission lever from the second setting position to the first setting position and the subsequent operations will be briefly described.

In conjunction with this operation of the operator, the retaining surface 14d of the cam pulls the first pin already engaged thereto to the right.

Further, in response to this operation, the second pin 15b enters into the slit 14c of the cam.

Each of the above-mentioned means is returned to its initial state, that is, the first setting position, by returning the operator to the N position.

The video disc in the player is released from the holding means, and a part of its outer periphery faces the entrance/exit of the envelope input space by the push-up member.Therefore, if an empty envelope is inserted through this entrance/exit, the input operation will be completed. Video discs can be stored in the envelope according to the requirements.

At this time, since the video disc is not clamped by the clamping means, if the envelope is removed from the input space, the friction between the upper and lower parts of the envelope and the video disc will allow the video disc to be removed while stored in the envelope. can.

As mentioned above, in the video disc player of the present invention, an envelope containing a video disc is inserted into the envelope input space, and after only this envelope is removed and the video disc is inserted into the player, the operation button is pressed. The video disc can be set to a playable state by operating the controller, and after the play operation is completed, the video disc can be reset to a returnable state by operating the controller in the opposite direction, making the operation extremely simple. .

In addition, the envelope can only be loaded when this controller is in the reference position, and on the other hand, this controller cannot be rotated when the envelope is loaded, so that the pickup and/or video disc can be loaded. Damage can be prevented.

In particular, the present invention allows a regulator to move forward and backward into a through hole in the upper and lower surface plate-E that defines the envelope input space at a position facing the envelopes accommodated in the envelope input space near the entrance of the envelope input space. Since the configuration is
The function of prohibiting operation of the controller when an envelope exists in the envelope input space and the function of prohibiting input of the envelope when the player is in the playback time state can be achieved with an extremely simple configuration, and the prohibition of input can be achieved with an extremely simple configuration. You can be sure.

[Brief explanation of the drawing]

1 and 2 are perspective views of the external structure of a video disc player according to the present invention (with the lid open and partially cut away). FIG. 3 is a perspective view of the main internal mechanisms of this player in the playing state, and FIG. 5 is a plan view of the envelope, and FIG. 5A is a sectional view for explaining the operation of the regulator. Explanation of main drawing numbers, E... Envelope, VD.
...Video disc, R...Envelope input space, T...Stationary table, CL...
... Clamping means, HO - - Holding means, PR -
...Push-up means, S...Regulator, CM...
・-・Control means, K・・・Operator, MT・・・・
...Power transmission means.

Claims (1)

[Scope of Claims] 1. An envelope containing a video disc is inserted into an envelope input space, and then only the envelope is removed, leaving the video disc in the envelope input space. Set the disc in its playback standby state, then reset the standby state by controlling the operator again, and then insert an empty envelope into the envelope input space to insert the video disc into it. and by extracting this envelope, 1
In a video disc player configured to complete a cycle, on the upper and lower plates defining the envelope input space,
Through-holes are provided on both sides of the upper and lower plates in the vicinity of the entrance of the envelope inputting space at positions facing the envelopes accommodated in the envelope inputting space; A regulator is provided that can cross the envelope input space and enter the through hole of the top plate, and the regulator is controlled by a regulator control means that responds to the operator, and the envelope is present in the envelope input space. When the player is in the playback standby state, it collides with the bottom surface of the envelope to prohibit the operation of the operator, and also restricts the input of the envelope into the envelope input space when the player is in the playback standby state based on the operation of the operator. A video disc player, wherein the video disc player is disposed between the through holes of the upper and lower plates. 2. The regulator control means is a direction changing means (for example, a release) that is controlled by a lever that is moved over a predetermined stroke in response to reciprocating rotation of the operator over a predetermined angle range from its reference position. A video disc player according to claim 1.