JPH0437318Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a tape player such as a digital audio tape player that operates by pulling out a magnetic tape from a cassette half and winding it around a rotating head cylinder. The present invention relates to a tape loading device in which a tape drawing guide pin can be driven by a mechanism.

[Background of the idea]

FIG. 6 shows a tape loading operation in a digital audio tape player.

The code 1 is the chassis. A supply reel stand 2 and a take-up reel stand 3 are provided on the chassis 1, and each is driven by a motor. Further, a rotary head cylinder 4 is arranged at a position apart from each reel stand 2, 3, and this rotary head cylinder 4 is equipped with a plurality of rotary heads. When the cassette half 5 is loaded into the chassis 1, a reel of tape T is loaded onto each of the reel stands 2 and 3. When the cassette half 5 is loaded, the cassette half 5
A pair of movable bases 6 and 7, a pinch roller 8, and posts 9 and 10 are located in a section A inside the lid 5a in front of the lid 5a. When the cassette half 5 is loaded, the movable bases 6 and 7 are moved to both sides of the rotary head cylinder 4 via guide paths B and C by the power of a motor or the like. Then, the magnetic tape T is attached to the guide pins 6 on the movable bases 6 and 7.
a, 6b, 7a, 7b, and is wound around the rotating head cylinder 4. At the same time, the pinch roller 8 and each post 9, 10 move to the position shown in FIG. 6, and the magnetic tape T is loaded in the state shown in the figure. During the reproduction operation, the pinch roller 8 comes into pressure contact with the capstan 11, and the magnetic tape T is held between them. The magnetic tape T is fed out by the capstan 11 which rotates at a constant speed, and the tape reel is driven by the take-up reel stand 3, so that the magnetic tape T is conveyed in a clockwise direction.

[Problems with conventional technology]

As mentioned above, in the digital audio tape player, the magnetic tape T in the cassette half 5 is pulled out and wound around the rotating head cylinder 4, but in this tape loading device, the movable bases 6 and 7 are connected to paths B and C. It is necessary to quickly move the object over a fairly long distance, as shown in .

As a tape loading device for moving the movable bases 6 and 7 in this way, for example, a VTR is used.
In this case, a loading ring that rotates around the rotating head cylinder 4 is provided, and the movable bases 6 and 7 are driven by this loading ring.

However, the digital audio tape player shown in the figure is smaller than a VTR, and the winding angle of the magnetic tape T around the rotary head cylinder 4 may be shallower than that of a VTR, so the above-mentioned loading ring makes the device unsuitable. . Therefore, each moving base 6 and 7 must be driven by a device that combines links and levers. However, since the movable bases 6 and 7 move along complicated paths as shown by B and C, the links and levers for driving them must also have a complicated structure. In particular, since each of the movable bases 6 and 7 must be moved in opposite directions, the links and levers must be driven by a gear mechanism, resulting in a rather complicated problem.

[Purpose of invention]

The present invention was developed in view of the above-mentioned conventional problems, and is a tape player that uses an extremely simple device to move a pair of movable bases to predetermined positions to quickly pull out the tape. The purpose is to provide a loading device.

[Summary of the invention] The tape loading device according to the invention includes a pair of reel stands on a chassis into which tape reels in a cassette half are loaded, a rotary head cylinder located apart from the reel stands, and a reel. A pair of movable bases are movably provided between a position where the tape approaches the base and a position where the tape stops on both sides of the rotary head cylinder, and a guide pin for drawing out the tape supported on each movable base. In the provided tape player, each of the pair of movable bases is slidably supported by a guide formed on the chassis, and a pair of toggle links are provided to connect each movable base and the chassis. and the chassis is provided with a drive lever that is driven by a motor to reciprocate, one point of the chassis side link of one toggle link is latched to the drive lever, and the other toggle link is engaged with the chassis side link at one point. The chassis side link is locked to the drive lever via a power reversing mechanism that changes the direction of power.

In this invention, a pair of toggle links are operated by a single reciprocating drive lever, and this toggle link drives a pair of moving bases, so a pair of moving bases can be moved using an extremely simple device. You will be able to operate the base reliably.

[Example of idea]

Embodiments of the present invention will be described below with reference to the drawings of FIGS. 1 to 5.

Fig. 1 is a plan view showing a tape loading device in a digital audio tape player in a non-loading state, that is, a state in which the magnetic tape is not pulled out from inside the cassette half, and Fig. 2 shows a part of the device in Fig. 1. The extracted plan view, FIG. 3, is a right side view of FIG. 1. Note that in FIG. 1, some parts of the apparatus are omitted to avoid complication of illustration, and in FIG. 2, the omitted parts are additionally illustrated.

FIG. 4 is a diagram corresponding to FIG. 1 showing a state in which tape loading has been completed, and FIG. 5 is a diagram corresponding to FIG. 2 showing a state in which tape loading has been completed.

Further, the tape feeding path after tape loading is completed is as shown in FIG. 6, which is the same as explained in the background of the invention.

In FIG. 1, reference numeral 1 indicates a chassis. A supply reel stand 2 and a take-up reel stand 3 are provided on the chassis 1, and each is driven by a motor. In addition, each reel stand 2,
A rotary head cylinder 4 is located at a position away from 3.
The rotary head cylinder 4 is equipped with a plurality of rotary heads. A reel of tape T in a cassette half 5 loaded onto the chassis 1 is loaded onto each of the reel stands 2 and 3.

B ₁ and C ₁ are guide grooves formed in the chassis. A movable base 6 is slidably supported in one guide groove _B1 , and a movable base 7 is slidably supported in the other guide groove _C1 . In the non-loading state shown in FIG. 1, the movable bases 6 and 7 are stopped in a section A inside the lid 5a of the cassette half 5. In addition, in the non-tape loading state shown in FIG. 4, the movable bases 6 and 7 are stopped on both sides of the rotary head cylinder 4. That is, the guide grooves B ₁ and C ₁ are formed in a shape that can guide each movable base 6, 7 to a non-loading position and a tape loading completion position. Further, a guide pin 6a and an inclined guide pin 6b are fixed on the moving base 6, and a guide pin 7a and an inclined guide pin 7b are similarly fixed on the moving base 7. Each guide groove B ₁
Stoppers 21 and 22 are provided at the upper ends of C ₁ and C 1 in the figure, that is, at the stop positions of the movable bases 6 and 7 upon completion of tape loading.

The driving source for each moving base 6 and 7 is a motor M shown in FIG. This motor M is installed inside a side plate 23 fixed to a side end of the chassis 1. A slider 24 is provided on the side plate 23 so as to be slidable in the left-right direction in FIG. 3, and the power of the motor M is transmitted to the slider 24 by a pinion and a rack. FIG. 3 shows the same non-loading state as FIG. 1, and when tape loading is performed, the slider 24 is moved by the motor M.
Therefore, it is driven in the direction (A). code 25
is a relay link. The center portion of the relay link 25 is rotatably supported by the side plate 23 by a fulcrum pin 26. One end of the relay link 25 is supported by a pin 27 with respect to the slider 24, and a recess 25a is formed at the other end of the relay link 25. On the other hand, as shown in FIG. 1, a switching lever 28 is provided on the surface of the chassis 1. This switching lever 28 is guided by guides 29 and 30 and is provided so as to be freely slidable in the vertical direction in the drawing. A bent piece 28a is provided at the right end of the switching lever 28, and a pin 31 is implanted in this bent piece 28a. As shown in FIG. 3, the recess 2 of the relay link 25
5a is engaged with the pin 31. Said motor M
When the slider 24 is driven in the (A) direction by the power, the power is transmitted to the switching lever 28 via the relay link 25, and the switching lever 28 is driven in the (B) direction.

As shown by the dotted line in FIG. 1, a transmission link 35 is provided on the right side of the lower surface of the chassis 1. This transmission link 35 is connected to the chassis 1 by means of a fulcrum pin 36.
It is rotatably supported. Transmission link 3
A pin 37 is provided at one end of 5, and this pin 37
is inserted into a guide groove D formed in the switching lever 28. The guide groove D has a crank shape, and when the switching lever 28 is driven in the (b) direction,
This guide groove D rotates the transmission link 35 in the direction (C). Further, a recess 35a is formed at the other end of the transmission link 35.

A drive lever 41 is provided on the lower surface of the chassis 1. The shape of the drive lever 41 is shown in solid lines in FIG. This drive lever 41 is the guide 4
2 (shown only in Figure 1), Figures 1 and 2
It is supported so as to be slidable in the left and right directions in the figure.
A connecting pin 43 is implanted at the right end of the drive lever 41 in the drawing, and this connecting pin 43 is connected to the recess 35a of the transmission link 35. When the transmission link 35 rotates in the (c) direction, the drive lever 41 is driven in the (d) direction by the connecting pin 43. As shown in detail in FIG.
A locking piece 41a is provided on the right side in the figure, and a locking hole 41b is provided on the left side in the figure.

Reference numeral 45 is a first toggle link. This toggle link 45 is constructed by connecting a chassis side link 45a and a movable base side link 45b with a connecting pin 46. An end portion of the chassis side link 45a is rotatably supported by the chassis 1 by a support pin 47. Further, the end of the movable base side link 45b is connected to the movable base 7 on one side by a pin 48. Further, a locking pin 49 is implanted in the chassis side link 45a, and this locking pin 49 is locked to the locking piece 41a of the drive lever 41.

Reference numeral 51 is the second loading. This toggle link 51 is constructed by connecting a chassis side link 51a and a movable base side link 51b with a connecting pin 53. The moving base side link 51b is connected to the moving base 6 by a pin 54. Also chassis side link 5
1a is the drive lever 41 via the power reversing mechanism 55.
It is locked to. In other words, chassis side link 5
1a is connected to one lever 55a constituting the power reversing mechanism 55. This lever 55a
is rotatably supported on the chassis 1 by a pin 56. The other lever 55b constituting the power reversing mechanism 55 is rotatably supported with respect to the chassis 1 by a pin 57. Further, a locking pin 58 is implanted at the tip of the lever 55b, and this locking pin 58 is locked in the locking hole 41b of the drive lever 41. Both levers 55a and 55b constituting the power reversing mechanism 55 have gears and are engaged with each other so that they rotate in opposite directions to transmit power.

As shown in FIG. 2 (not shown in FIG. 1), biasing levers 61 and 63 are provided on the lower surface of the drive lever 41, separated to the left and right. The biasing lever 61 is rotatably supported by a pin 62 with respect to the drive lever 41. The other biasing lever 63 is also rotatably supported by the drive lever 41 by a pin 64. Both biasing levers 61 and 63 are connected by a spring 65, and one biasing lever 61 is biased clockwise and the other biasing lever 63 is biased counterclockwise.
The rotation of the biasing lever 61 on the right side is controlled by the regulating pin 66.
regulated by. In this regulated state, the tip 61a of the biasing lever 61 and the drive lever 4
The locking pin 49 of the first toggle link 45 is sandwiched between the first toggle link 45 and the first locking piece 41a. The rotation of the other biasing lever 63 is restricted by a restriction pin 67. In this regulated state, the locking pin 58 of the second toggle link is sandwiched between the tip 63a of the biasing lever 63 and the locking hole 41b of the drive lever 41.

Next, the tape loading operation of the tape player having the above structure will be explained.

The cassette half 5 is loaded onto the chassis 1 in the non-loading state shown in FIGS. 1 and 2.
When the cassette half 5 is loaded, the lid 5a at the front of the cassette half 5 is opened by a mechanism within the tape loading device, and the magnetic tape T is exposed from the section A.

In addition, in the non-loading state shown in Figure 1,
The drive lever 41 moves to the left in the drawing, and as shown in FIG. 2, the locking piece 41a of the drive lever 41 drives the locking pin 49 to the left in the drawing. As a result, the chassis side link 45a of the toggle link 45
rotates counterclockwise about the fulcrum pin 47, and the toggle link 45 is in a contracted state. Therefore, the movable base 7 is placed in the first position of the guide groove _C1 .
The guide pin 7a and the inclined guide pin 7b on the movable base 7 are stopped inside the magnetic tape T in the section A of the cassette half 5. Further, the locking hole 41b at the left end of the drive lever 41 pushes the regulation pin 58 to the left in the diagram, and the lever 55b of the power reversing mechanism 55 pushes the pin 58 toward the left in the diagram.
It rotates counterclockwise using the fulcrum as the fulcrum. As a result, the other lever 55a is connected to the pin 56 via the gear.
Rotate clockwise using the toggle link 5 as a fulcrum.
1 is in a contracted state. Then, the movable base 6 has moved to the lower end of the guide groove _B1 in the first figure, and the guide pin 6a and the inclined guide pin 6b on the movable base 6 are attached to the magnetic tape T at the part A in the cassette half 5. It is stopped inside.

Further, the pinch roller 8 and each post 9, 10 shown in FIG. 6 are also located in the A section of the cassette half 5 by a mechanism not shown.

When the inside of the cassette half 5 is loaded onto the chassis 1, the motor M shown in FIG. 3 is started, and the slider 24 is driven in the direction (A) by a mechanism such as a pinion and a rack. When the slider 24 is driven in the direction (A), the relay link 25 rotates clockwise about the fulcrum pin 26. And relay link 25
The switching lever 28 connected to the lower end of the chassis 1
It is driven in the (b) direction at the top.

When the switching lever 28 moves in the (b) direction, the pin 37 is guided by the guide groove D, and the transmission link 35 is driven in the (c) direction (counterclockwise) using the fulcrum pin 36 as a fulcrum. As a result, transmission link 35
The drive lever 41 connected to is driven in the (d) direction.

4 and 5 show a state in which the drive lever 41 has moved in the (d) direction. As shown in FIG. 5, when the drive lever 41 is moved in the (d) direction, the tip 61a of the biasing lever 61 provided on the drive lever 41 pushes the regulation pin 49 to the right in the figure. The chassis side link 45a of the toggle link 45 is driven clockwise using the fulcrum pin 47 as a fulcrum. As a result, the toggle link 45 is extended, and the movable base side link 45b is moved to the movable base 7.
is pushed, and the transfer base 7 is driven along the guide groove C ₁ in the direction of the stopper 22 . Further, when the drive lever 41 moves in the (d) direction, the tip 63a of the biasing lever 63 provided on the drive base 41 presses the regulation pin 58 to the right in the figure. As a result, the lever 55b rotates clockwise. This operation is transmitted to the other lever 55a via the gear, and the lever 55a and the chassis-side link 51a are driven counterclockwise. Then, the toggle link 51 is extended, the movable base side link 51b pushes the movable base 6, and the movable base 6 is driven in the direction of the stopper 21 along the guide groove _B1 .

This operation causes the movable base 7 to move to the stopper 22.
, and the other moving base 6 comes into contact with the stopper 21 (the state shown in FIG. 4). When the drive base 41 is further driven in the (d) direction from this state, the locking piece 41a on the drive base 41 separates from the locking pin 49. As a result, the tip 61a of the biasing lever 61
However, due to the elastic force of the spring 65, the locking pin 49 is
There will be oppression in that direction. In addition, the drive lever 4
1 moves in the (d) direction, the locking pin 58 on the left side in FIG. 5 moves to the center of the locking hole 41b. As a result, the tip 63a of the biasing lever 63
The locking pin 58 is elastically pressed in the β direction by the elastic force of 5.

Since the elastic force in the α direction on the locking pin 49 acts as a force that stretches the toggle link 45, the movable base 7 is elastically pressed against the stopper 22 by this force. The moving base 7 is the stopper 2
2 by the force of a spring 25, it is correctly positioned at a predetermined position. Similarly, the elastic force in the β direction against the locking pin 58 is applied to the toggle link 5.
Since it acts as a force to stretch 1, the moving base 6
is pressed against the stopper 21 by this force. The movable base 6 is pressed against the stopper 21 by the force of the spring 25, so that it is accurately positioned at a predetermined position.

Through the above series of operations, the movable bases 6 and 7 move along the guide grooves _B1 and _C1 , but during this time,
Guide pin 6a and inclined guide pin 6b on moving base 6, and guide pin 7 on moving base 7
a and the inclined guide pin 7b pull out the magnetic tape T from the cassette half 5, and as shown in FIG. 6, the magnetic tape T is wound around the rotary head cylinder 4 at a predetermined angle.

Further, as shown in FIG. 6, by a mechanism not shown, the pin roller 8 and posts 9 and 10 are also moved from the section A, and the magnetic tape T is brought to a state where it is sent along a predetermined path.

In the play operation, the pin roller 8 comes into pressure contact with the capstan 11, feeds out the magnetic tape T clockwise, and the winding-side reel stand 3 winds up the reel.

[Effect of idea]

As described above, according to the present invention, one drive lever is provided as a power source for driving a pair of moving bases, and the reciprocating movement of this drive lever is controlled by one toggle link and another power reversing mechanism. to the moving base via a toggle link. Therefore, the movable base can be driven with an extremely simple structure. In particular, since power is transmitted to one of the pair of toggle links via the power reversing mechanism, the pair of moving bases can be driven simply by one drive lever that reciprocates. Therefore, the movable base can be reliably driven with a simple structure.

[Brief explanation of the drawing]

The drawings show a digital audio tape player as an embodiment of the present invention, in which FIG. 1 is a plan view showing the tape loading device of the tape player in a non-loading state, and FIG.
FIG. 2 is a plan view of a portion of the device shown in the figure; Note that in FIG. 1, a part of the apparatus is omitted to avoid complication of illustration, and in FIG. 2, the omitted part is additionally illustrated. Figure 3 is the right side view of Figure 1,
The figure is a plan view corresponding to Fig. 1 showing a state in which tape loading is completed, Fig. 5 is a plan view corresponding to Fig. 2 also showing a state in which tape loading is completed, and Fig. 6 is a plan view corresponding to Fig. 1 showing a state in which tape loading is completed. FIG. 3 is a plan view showing a tape running path of the player. 1... Seat, 2, 3... Reel stand, 4...
Rotating head cylinder, 5...cassette half,
6, 7...Moving base, 6a, 6b, 7a, 7b
... Tape drawer guide pin, 41 ... Drive lever, 41a ... Locking piece, 41b ... Locking hole, 5
1... Toggle link, 45a, 51a... Chassis side link, 55... Power reversal mechanism, B ₁ , C ₁ ...
...Guide groove, M...Motor, T...Magnetic tape.

Claims (1)

[Scope of utility model registration request] A pair of reel stands on the chassis on which the tape reels in the cassette halves are loaded, and a rotating head cylinder located apart from the reel stands;
a pair of movable bases movable between a position where the pair of movable bases stops close to a reel table and a position where the pair of movable bases stops on both sides of a rotating head cylinder, and guide pins for pulling out the tape are supported on each of the movable bases, each of the pair of movable bases is slidably supported by a guide formed on a chassis, a pair of toggle links are provided connecting each of the movable bases to the chassis, the chassis is provided with a drive lever which is driven by a motor to perform reciprocating motion, one point of a chassis side link of one of the toggle links is engaged with the drive lever, and the chassis side link of the other toggle link is engaged with the drive lever via a power reversing mechanism which changes the direction of power.