JP3066347U - Tape deck - Google Patents

Abstract

(57) [Problem] To provide a recording / reproducing apparatus in which a depth dimension is extremely reduced as compared with a conventional recording / reproducing apparatus, and it is easy to achieve remarkable miniaturization. SOLUTION: There is provided a door opening / closing mechanism 20 for changing a posture of the door 1 from a hanging posture to a lifting posture, and a cassette conveying mechanism 30 for carrying out a tape cassette at a set position to a detachable position. The door opening operation by the door opening / closing mechanism 20 is performed before the cassette unloading operation by the cassette transport mechanism 20. The door opening operation is controlled by the movable cam member 25, and the cassette transfer operation is performed by swinging the arm 35.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a tape deck, and more particularly to a tape deck provided with a cassette transport mechanism for unloading a tape cassette from a setting position with respect to a loading mechanism.

[0002]

[Prior art]

 Japanese Unexamined Utility Model Publication No. 2-60940 and Japanese Unexamined Patent Publication No. 1-127767 describe a door opening / closing mechanism used for opening / closing a door attached to a cassette insertion slot. In particular, Japanese Utility Model Application Laid-Open No. 2-60940 discloses that a tape cassette inserted into a loading / unloading position through a cassette loading / unloading port and pulled out from the loading / unloading position through the cassette loading / unloading slot moves upward from a setting position to a loading / unloading position with respect to a loading mechanism. In a tape cassette loading device designed to be unloaded via a transport path having a tape cassette, a tape cassette is unloaded from a set position to a loading / unloading position (cassette unloading operation), and a tape attached to the cassette slot is opened and closed. There is a description about linking with the opening operation. According to this, a gear for opening the door is provided integrally with a gear provided to carry out the tape cassette from the set position to the mounting / removal position. The operation and the operation are performed at the same time.

On the other hand, in a conventional tape deck, an operation of unloading a cassette and an operation of opening a door are performed simultaneously. This will be described with reference to FIGS.

[0004] In the conventional tape deck, when the tape cassette is carried out from the set position to the detachable position, the tape cassette C rises from the set position indicated by a virtual line in FIG. The tape cassette C (shown by a solid line in FIG. 19 and a virtual line in FIG. 20) reaching the upper end of the upward path and subsequently reaching the upper end of the upward path is indicated by an arrow in FIG. It moves horizontally like H and is carried out to the attachment / detachment position. FIG. 20 shows the tape cassette C carried out to the attachment / detachment position by a solid line. Further, the door 1 is turned downward to close the cassette insertion / extraction opening (not shown) and around the rotation center 12 located above the cassette insertion / extraction opening to the back of the cassette insertion / extraction opening, thereby closing the insertion / extraction opening. The posture can be changed between the open and raised positions. FIG. 19 shows the door 1 in the hanging position by phantom lines, and FIGS. 19 and 20 show the door 1 in the raised position by solid lines. It is. In this tape deck, as shown by a virtual line in FIG. 19, the front end of the tape cassette C disposed at the set position is located slightly behind the end of the door 1 in the lifting position by a horizontal distance D. I have.

[0005] This is because the cassette unloading operation of bringing the tape cassette C from the set position to the mounting / removing position and the door opening operation of changing the position of the door from the hanging position to the lifting position are performed in parallel as described above. For example, when the front end of the tape cassette C (indicated by the phantom line) disposed at the set position as shown in FIG. 21 protrudes forward in the horizontal direction from the end of the door 1 in the lifting posture, the setting is performed. The door 1 may interfere with the tape cassette C rising upward from the position as shown by the arrow U during the door opening operation, and the door 1 may not be opened or may not be opened smoothly.

On the other hand, in the door opening / closing mechanism described in Japanese Utility Model Application Laid-Open No. 2-60940, the timing of the door opening operation and the cassette unloading operation is appropriately determined so that the tape at the set position can be set. Even if the front end of the cassette protrudes forward in the horizontal direction from the end of the door in the lifting position, the door and the tape cassette do not interfere with each other.

[0007]

[Problems to be solved by the invention]

 However, in the conventional tape deck described with reference to FIGS. 19 and 20, the front end of the tape cassette C disposed at the set position is positioned slightly behind the end of the door in the lifting position by the horizontal distance D. Since it is necessary to determine the set position, the depth of the tape deck becomes longer, which restricts the reduction in the depth of the tape deck and the size reduction.

On the other hand, in the door opening / closing mechanism described in Japanese Utility Model Laid-Open No. 60940/1990, the depth dimension can be somewhat reduced as compared with the above-described conventional tape deck. However, in this door opening / closing mechanism, the door needs to reach the lifting position prior to the upward movement of the tape cassette on the upward path. There is a restriction on shortening the depth of the tape deck by increasing the length of the front end of the tape cassette that projects from the end of the door in the horizontal position to the front in the horizontal direction. Therefore, from the perspective of shortening the depth of the tape deck and reducing its size, a tape deck equipped with this door opening / closing mechanism is significantly smaller than the conventional tape deck described above. Will not be achieved.

The present invention has been made under the above circumstances, and uses the conventional tape deck described with reference to FIGS. 19 and 20 and the door opening / closing mechanism described in Japanese Utility Model Application Laid-Open No. 2-60940. It is an object of the present invention to provide a tape deck in which the depth dimension of the tape deck is extremely reduced as compared with a tape deck or the like, and it is easy to achieve a remarkable miniaturization.

Another object of the present invention is to provide a user-friendly tape deck with improved operability when a tape cassette is inserted into a detachable position through a cassette insertion slot.

[0011]

[Means for Solving the Problems]

 In the tape deck according to the present invention, the door is in a hanging position for closing the cassette insertion / ejection opening, and is rotated to the back of the insertion / extraction opening around a rotation center located above the insertion / extraction opening, thereby closing the insertion / extraction opening. The posture can be changed between the open lifting posture. Further, the tape cassette inserted into the insertion / removal position through the insertion / removal opening and pulled out from the removal / removal position through the insertion / removal opening is carried out from the setting position for the loading mechanism to the mounting / removal position via a transport path having an upward path. Has become. It also has a door opening / closing mechanism for changing the attitude of the door from a hanging attitude to a lifting attitude, and a cassette transport mechanism for transporting a tape cassette at a set position to a detachable position.

[0012] The posture changing operation (the door opening operation) by the door opening / closing mechanism for bringing the door from the hanging posture to the lifting posture is performed prior to the cassette unloading operation by the cassette conveyance mechanism. It has become.

As described above, if the door opening operation by the door opening / closing mechanism is performed prior to the cassette unloading operation by the cassette transport mechanism, the door may interfere with the tape cassette rising on the upward path. There is no room for things to happen. Therefore, the front end of the tape cassette at the set position can be largely protruded to the front in the horizontal direction of the end of the door in the lifting position, which shortens the depth dimension of the tape deck and reduces its size. It is useful for remarkably promoting the conversion.

Therefore, in the tape deck of the present invention, in the case where the transport path is formed by the upward path and the horizontal path extending between the upper end of the upward path and the attaching / detaching position, The front end of the tape cassette held at the upper end of the upward path may be located below the door in the lifting posture.

The door opening / closing mechanism includes a lever having a swing fulcrum at one position in a longitudinal middle portion and having an engagement portion linked to the door at one free end, and a movable cam member. The position of the other free end of the lever is controlled by the movable cam member, and the position of the other free end of the lever is controlled by the movable cam member. The unit may change the posture of the door from a hanging position to a lifting position.

According to this, the door opening operation by the door opening / closing mechanism can be reliably performed before the cassette unloading operation by the cassette transport mechanism.

The cassette transport mechanism includes a driven gear that is rotatable in forward and reverse directions, and an arm that is provided integrally with the driven gear and that moves the tape cassette along the transport path. There may be. In this case, after the movable cam member controls the position of the other free end of the lever so that the engagement portion causes the door to move from hanging down to lifting, the driven gear It is desirable that the movable cam member be provided with a meshing portion that meshes with the gear and reverses the driven gear in a direction to raise the tape cassette along the upward path. The meshing portion can be formed by a tooth portion of a driving gear for rotating the driven gear, in which case the movable cam member is provided on the driving gear. It is possible.

Further, the cassette receiving base has a cassette receiving base for holding the tape cassette, the cassette receiving base is provided with a projection protruding laterally, and a side plate portion is provided on a side portion of the cassette receiving base. It is possible to adopt a configuration in which a guide hole having the same shape as the transport path is formed in the side plate portion, and the arm is engaged with the projection inserted through the guide hole.

In the tape deck according to the present invention, the cassette transport mechanism has a driven gear that is rotatable in forward and reverse directions and a swing center that is concentric with the driven gear, and the tape cassette is moved along the transport path. The arm may be provided with a forward / reverse swingable arm for moving it along. In this case, the driven gear and the arm need to be attached so as to be able to be linked and released. Here, "coupling" refers to a coupling structure in which the arm rotates together with the driven gear when the driven gear rotates, and "coupling" means that the driven gear rotates when the driven gear rotates. Even if the arm does not rotate.

When the arm swings backward to move the tape cassette from the set position to the attaching / detaching position, the arm is linked to the driven gear so that the driven gear rotates in the reverse direction. When the driven gear is reversed after the arm transports the tape cassette to the attachment / detachment position, it is necessary to provide an engagement / disengagement mechanism for releasing the linkage between the driven gear and the arm.

According to this tape deck, the link between the driven gear and the arm is released when the driven gear rotates reversely after the arm has conveyed the tape cassette to the attaching / detaching position. Therefore, when the tape cassette is inserted into the attachment / detachment position through the cassette insertion / ejection slot, only a force for swinging only the arm in the forward direction is required, and a force for rotating the driven gear in the forward direction is not required. Insertion can be performed easily with a small force, which helps to improve the usability of the tape deck.

In the tape deck provided with the above-mentioned engaging and disengaging mechanism, one of the driven gear and the arm is attached so as to be able to approach and separate from the other member, and the one member is attached to the arm. The above-mentioned engagement / disengagement mechanism is always urged and resilient in a direction approaching the other side member. When the arm swings backward to move the tape cassette from the setting position to the mounting / removing position, the one side member approaches the other side member to allow the convex portion to engage with the concave portion, and the arm is taped. A cam mechanism may be provided which separates the one-side member from the other-side member and separates the convex portion from the concave portion when the driven gear reversely rotates after the cassette is transported to the attaching / detaching position.

The tape deck according to the present invention includes a recording-only tape deck having only a function of recording information on a tape, and a reproduction-only tape deck having only a function of reproducing information on a tape on which information is recorded. Furthermore, a tape deck for recording and reproduction having both a function of recording information on a tape and a function of reproducing information on a tape on which information is recorded is included.

[0024] The specific configuration of the tape deck according to the present invention and the effects achieved thereby will be further clarified by the embodiments described below.

[0025]

[Embodiment of the invention]

 FIGS. 1 and 2 and FIGS. 6 to 8 are explanatory views showing the relationship between the operation timing when the tape deck door is opened and the operation timing when the tape cassette is unloaded according to the present invention. . FIG. 3 to FIG. 5 are explanatory views showing a structure for maintaining the above operation timings.

In this tape deck, the door opening operation shown in FIG. 1, that is, the posture changing operation of the door 1 from the hanging posture shown by the phantom line to the lifting posture shown by the solid line, and the cassette shown in FIG. The unloading operation, that is, the operation in which the tape cassette C is unloaded from the set position indicated by the imaginary line to the loading / unloading position via the transport path having a vertical upward path is performed, and the door opening operation is performed more than the cassette unloading operation. Done first. More specifically, as shown in FIG. 1, the tape cassette C is located at the set position until the door 1 in the hanging position indicated by the phantom line is changed to the lifting position. . Then, as shown in FIG. 2, after the attitude of the door 1 is changed to the lifting attitude, the tape cassette C at the set position indicated by the imaginary line is moved up the upward path as shown by the arrow U, and After reaching the upper end, it is subsequently transported through a horizontal path to the loading / unloading position.

As described above, when the door opening operation is performed first, and then the cassette unloading operation is performed, the front end C1 of the tape cassette C at the set position as shown in FIGS. However, even if the door 1 protrudes forward in the horizontal direction from the end 1a of the door 1 in the lifting posture, there is room for the door 1 to interfere with the front end of the tape cassette C during the door opening operation. Disappears. Therefore, the front end C1 of the tape cassette C at the set position is protruded long from the end 1a of the door 1 in the lifting position toward the front in the horizontal direction, and the overlapping width L of the door 1 and the tape cassette C in the vertical direction (see FIG. Even if the length is extended, the door can be opened smoothly. As a result, the rear end position of the tape cassette C at the set position can be shifted to the front side by that much, which helps to shorten the depth dimension of the tape deck and remarkably promote its miniaturization.

The point where the door 1 in the hanging position closes the cassette insertion opening (not shown), the door 1 in the lifting position opens the cassette insertion opening, and the rotation center 12 where the door 1 is located above the cassette insertion opening. The point in which the cassette is rotated around the center of rotation 12 behind the cassette insertion opening to reach the lifting position is the same as in the conventional case described with reference to FIGS.

Incidentally, the tape deck is equipped with a cassette receiving stand (not shown) for carrying in and out the tape cassette between the attaching / detaching position and the setting position. Also, left and right side plates (not shown) rising from a chassis (not shown) are provided on both left and right sides of the cassette receiver. A side projection provided on the cassette receiver is inserted into a guide hole provided in the side plate. The shape of the guide hole is the same as the shape of the cassette transport path. 3 and 4, the side plate is indicated by reference numeral 51, the guide hole is indicated by reference numeral 52, and the protrusion is indicated by reference numeral 53.

The above-described door opening operation is performed by a door opening / closing mechanism, and the cassette unloading operation is performed by a cassette transport mechanism. Hereinafter, these matters will be described with reference to FIGS.

As shown in FIGS. 3 to 5, the door opening / closing mechanism 20 includes a lever 21 and a movable cam member 25. The lever 21 has a swinging fulcrum formed by the horizontal shaft 22 at one position in the middle part in the longitudinal direction, and has one free end as an engaging portion 23 linked to the door 1 and the other free end. The end is a sliding portion 24 engaged with the movable cam member 25. In the illustrated example, the engaging portion 23 is formed by a projection provided at one free end of the lever 20, and the sliding portion 24 is formed by the other free end of the lever 20 itself. The engaging portion 23 is engaged with the engaging piece 13 provided on the back side of the door 1. Although not shown, the door 1 is provided with a resilient force that constantly urges the door 1 toward the hanging posture shown in FIG. This resilience may be applied directly to the door 1 or may be applied to the door 1 via the lever 2.

The movable cam member 25 is provided integrally with a driving gear 40 described later, and when the driving gear 40 rotates in the forward or reverse direction, the movable cam member 25 also moves in the same direction as the driving gear 40. To rotate. When the movable cam member 25 is opposed to the sliding portion 24 of the lever 2 from behind as shown in FIG. 3, the door 1 is held in the hanging position by the elastic force applied to the door 1. The cam insertion / removal opening (not shown) is closed, and the lever 20 is also at the initial position (the position in FIG. 3) at which the door 1 can maintain the hanging posture.

From the state where the door 1 is in the hanging posture as shown in FIG. 3, the driving gear 40 rotates in the reverse rotation direction indicated by the arrow a in FIG. When the position of the other free end of the lever 2 is controlled by pressing the lever 24, the lever 2 swings counterclockwise around the horizontal shaft 22 as shown by the arrow b, and the engaging portion 23 follows the gradually rising arc path. Since the door 1 is drawn and moved while pressing the engagement piece 13 of the door 1, the posture of the door 1 is changed from the hanging posture of FIG. 3 to the lifting posture of FIG. This is the door opening operation.

As shown in FIGS. 3 to 5, the cassette transport mechanism 30 includes a driven gear 31 that is rotatable in forward and reverse directions, and an arm 35 provided integrally with the driven gear 31. The side gear 31 has a tooth portion 32 that can mesh with the tooth portion 41 of the driving side gear 40. Further, the arm 35 locks the protrusion 55 protruding from the guide hole 52 described above.

In the cassette transport mechanism 30, when the tape cassette C is located at the set position as shown in FIG. 6, the protrusion 55 locked on the arm 35 is moved as shown in FIG. 3, FIG. 4 or FIG. It is located at the lower end of the guide hole 52. When the driven gear 31 rotates in the reverse direction as shown by the arrow c in FIG. 5 and the arm 35 swings counterclockwise, the projection 55 which is locked by the arm 35 moves the above-mentioned cassette receiving stand. Accordingly, the guide hole 52 moves to the front end of the guide hole 52 as shown in FIG. 5 or FIG. Therefore, the tape cassette C held in the cassette receiving tray is carried out from the setting position to the mounting / dismounting position. This is a cassette unloading operation.

In this embodiment, the structure described below is employed to perform the door opening operation prior to the cassette unloading operation.

That is, the teeth 41 of the driving gear 40 are provided only in a part of the driving gear 40 in the circumferential direction, and the door 1 is in the hanging posture as shown in FIG. 3 or FIG. When the tape cassette C is at the set position, the teeth 41 of the driving gear 40 do not mesh with the teeth 32 of the driven gear 31. Immediately after the door opening operation is performed by reversing the drive side gear 40 as shown by the arrow a in FIG. 4, the tooth portion 41 of the drive side gear 40 is connected to the driven side gear 31 as shown in FIG. It is designed to mesh with the teeth 32. Therefore, while the door opening operation is being performed, the driven gear 31 does not reverse, and the reverse rotation of the driven gear 31 starts after the door opening operation is completely completed. Therefore, as shown in FIG. 7, the tape cassette C held by the cassette receiving stand is securely moved by the movement of the protrusion 55 rising from the lower end of the guide hole 52 until reaching the bent portion 52a of the guide hole 52. When ascending the upward path from the slot position, the end of the door 1 cannot interfere with the front end C1 of the tape cassette C itself.

In this embodiment, the teeth 41 of the drive gear 40 exhibit the following operation. That is, after the door opening operation by the movable cam member 25 is performed, the tooth portion 41 of the driving side gear 40 meshes with the driven side gear 31 and moves the tape cassette C upward along the upward path. The driven gear 31 is reversed.

In this embodiment, the movable cam member 25 is provided on the driving gear 40, and the tooth 41 of the driving gear 40 forms a meshing portion with the tooth 32 of the driven gear 31. However, this point may be provided with a bar that moves the movable cam member in the push-pull direction, and such a bar or the movable cam member may be provided with the meshing portion.

In this embodiment, the unloading path of the tape cassette C extends from the set position of the tape cassette C to the loading mechanism to the above-mentioned attaching / detaching position, and is located between the upward path and the upper end of the upward path and the attaching / detaching position. It is formed by a horizontal road. When the tape cassette C is located at the attachment / detachment position, even if the movable cam member 25 is separated from the sliding portion 24 of the lever 20 as shown in FIG. Will not be in a hanging position. The door 1 is in the hanging position when the tape cassette C is pulled out of the attaching / detaching position, and when the door 1 is in the hanging position in this manner, the lever 20 is also moved to the initial position shown in FIG. Return to

Next time, when the tape cassette is inserted into the attachment / detachment position through the cassette insertion / ejection opening, the cassette receiver is pushed rearward and the projection 55 is slightly retracted from the position shown in FIG. The driven gear 31 is rotated forward through the forward swing, and the driven gear 40 is driven forward to move the movable cam member 25 to the position shown in FIG. It is returned to the position facing the part 24 from behind.

In the embodiment described above, the driven gear 31 forming the cassette transport mechanism 30 and the arm 35 are integrated. Therefore, when the tape cassette is inserted into the attachment / detachment position through the cassette insertion slot, the force for slightly retracting the cassette receiving table, the force for swinging the arm 35 through the projection 55, and the forward rotation of the driven gear 31 together with the arm 35. You need power. Therefore, it is necessary for the user to push the tape cassette into the cassette insertion slot with a relatively large force, which may reduce the usability of the tape deck.

An embodiment capable of solving this point will be described below.

FIGS. 9 to 14 are operation explanatory views showing a part of this embodiment in a side view, and FIGS. 15 to 18 are operation explanatory views showing the same part in a partially cutaway view.

In this embodiment, the cassette transport mechanism 60 is divided into a driven gear 61 that can rotate forward and backward and an arm 71 that can swing forward and backward. As shown in FIGS. 15 to 18, the arm 71 has a disk portion 72 at the base thereof, and the disk portion 72 overlaps the back surface of the driven gear 61. The disc portion 72 and the driven gear 61 are supported by a common horizontal shaft 81 so as to be rotatable about the horizontal shaft 81, while the driven gear 61 is connected to the axis of the horizontal shaft 81. It is slidable in the direction. Therefore, the driven gear 61 can approach and separate from the disk portion 72. Further, a spring receiver 82 is attached to the tip of the horizontal shaft 81, and the driven gear 61 is disc-shaped by an elastic body 83 formed of a coil spring interposed between the spring receiver 82 and the driven gear 61. It is constantly urged to approach. Note that the horizontal shaft 81 can be provided on the side plate portions 51 on both sides of the above-mentioned cassette support.

The driven gear 61 and the arm 71 are attached so as to be able to be linked and released. Further, there is provided an engagement / disengagement mechanism 90 for linking or releasing the link between the driven gear 61 and the arm 71. The engagement / disengagement mechanism 90 causes the arm 71 to swing backward to set the tape cassette at the set position. In order to move the tape cassette to the attaching / detaching position, the arm 71 is linked to the driven gear 61 to convert the reverse rotation of the driven gear 61 into a reverse swing of the arm 71, and the arm 71 conveys the tape cassette to the attaching / detaching position. When the side gear 61 reverses, the function of releasing the link between the driven side gear 61 and the arm 71 is exhibited. Further, a cam mechanism 80 necessary for disengaging the disengagement mechanism 90 is provided. Next, specific configurations of the engagement / disengagement mechanism 90 and the cam mechanism 80 will be described.

The engagement / disengagement mechanism 90 includes a concave portion 91 provided on the driven gear 61 and a convex portion 92 provided on the disk portion 72 of the arm 71. It is possible to remove. The cam mechanism 80 includes a protrusion 85 provided on the driven gear 61 and a cam 86 provided on the side plate 51.

As shown in FIG. 9, the tooth portion 62 of the driven side gear 61 has a full width tooth portion 62 a formed over the entire width of the driven side gear 61 and a half width of the driven side gear 61. And a half-width tooth portion 62b formed only over the portion. In the portion where the half-width tooth portion 62b is formed, the remaining half-width portion is meshed with the same height as the peak height of the tooth portion 62. A blocking section 63 is provided.

Other configurations, for example, the configuration and operation of the door opening / closing mechanism 20 having the lever 21 for opening and closing the door, and the configuration and operation of the movable cam member 25 are the same as those described with reference to FIGS. Since they are the same, they are not shown. The drive side gear 40, the guide hole 52, the protrusion 55, and the like are denoted by the same reference numerals as those in FIGS.

Next, the operation will be described.

FIG. 9 shows a state corresponding to FIG. 4 described above. That is, the state immediately after the door opening operation is performed by the reverse rotation of the driving gear 40 is shown. In other words, the tape cassette (not shown) is located at the set position, the projection 55 locked on the arm 71 is located at the lower end of the guide hole 52, and the teeth 41 of the drive gear 40 are on the driven side. The gear 61 meshes with the half-width tooth portion 32b. Further, the convex portion 92 is engaged with the concave portion 91, and the disk portion 72 of the arm 71 is linked to the driven gear 61. In this state, the driven gear 61 approaches the disk portion 72, and the engagement preventing portion 63 of the driven gear 61 is displaced from the position of the driving gear 40.

When the drive side gear 40 reverses as shown by the arrow a and the driven side gear 31 reverses as shown by the arrow c in FIGS. 10 and 15 from the state shown in FIG. Since the convex portion 92 is engaged, the arm 71 is linked to the driven gear 61, and the arm 71 is pivoted counterclockwise in the counterclockwise direction. The guide hole 52 is moved to the front end of the guide hole 52. As a result, the cassette unloading operation is performed.

After the cassette unloading operation is completed, when the driven gear 61 further rotates in the reverse direction as shown by an arrow a as shown in FIGS. 11 and 16, the driven gear 61 is moved to the driven gear 61 as shown in FIGS. The protrusion 85 provided slides on the cam member 86 to separate the driven-side member 61 from the disk portion 72 against the bias of the elastic body 83. Therefore, as shown in FIGS. 11 and 16, the protrusion 92 is separated from the recess 91, and the linkage between the driven gear 61 and the arm 71 is released. When the link between the driven gear 61 and the arm 71 is released in this way, the engagement preventing portion 63 of the driven gear 61 shifts to a position corresponding to the driving gear 40, and thereafter, the rotation of the driving gear 40 is stopped. Then, the teeth 41 of the driving gear 40 hit the meshing preventing portion 63 and are blocked, and the rotation of the driving gear 40 stops.

Then, the next time the tape cassette is inserted to the loading / unloading position through the cassette insertion / ejection opening, the cassette receiving table is pushed rearward, and the projection 55 retreats slightly from the position shown in FIG. As shown in FIG. 17, only the arm 71 swings clockwise forward via the projection 55. At this time, the driven gear 31 is not rotated forward. Therefore, when the tape cassette is inserted into the attachment / detachment position, only a force for slightly retreating the cassette receiving stand or a force for swinging the arm 35 via the projection 55 is required, and the driven gear 61 is rotated forward. No power is needed. This reduces the force required to insert the tape cassette and improves the usability of the tape deck.

When the tape cassette is inserted into the attachment / detachment position, as shown in FIGS. 13 and 18, the drive gear 40 rotates forward as indicated by an arrow a ′, and the driven gear 61 rotates forward as indicated by an arrow c ′. Invert. Therefore, the convex portion 92 of the disk portion 72 is engaged with the concave portion 91 of the driven gear 61, the arm 71 is linked to the driven gear 61, and the driven gear is moved from the position of the tooth 41 of the driving gear 40. The engagement preventing portion 63 of 61 is displaced. Therefore, when the drive-side gear 40 continues to rotate forward as indicated by the arrow a ', the driven gear 61 rotates forward as indicated by the arrow c' with the arm 71, and the tape cassette is carried into the set position.

After the tape cassette is inserted into the attachment / detachment position, as shown in FIGS. 13 and 18, the drive gear 40 rotates forward as indicated by an arrow a ′, and the driven gear 61 rotates forward as indicated by an arrow c ′. If, for some reason, the projection 92 does not engage with the recess 91 when it is turned over, the depression 91 passes through the projection 92 as shown in FIG. In this case, as shown in the figure, the teeth 41 of the driving gear 40 abut on the meshing prevention portion 63 to prevent the rotation of the driving gear 40. Therefore, when the drive gear 40 is rotated a little forward to engage the projection 92 with the recess 91, the drive gear 40 is then rotated forward again to move the tape cassette to the set position. Will be able to be brought in. In this embodiment, the concave portion 91 is provided on the driven gear 61 and the convex portion 92 is provided on the arm 71 side. However, in this point, the convex portion may be provided on the driven gear and the concave portion may be provided on the arm side. .

[0057]

[Effect of the invention]

 As described above, according to the tape deck according to the present invention, the conventional tape deck described with reference to FIGS. 19 and 20 and the tape deck using the door opening / closing mechanism described in Japanese Utility Model Laid-Open No. 2-60940 are used. In comparison, the depth of the tape deck can be made extremely short, so that the size of the tape deck can be significantly reduced. Further, according to the tape deck of the present invention, it is possible to provide an easy-to-use tape deck by improving the operability when the tape cassette is inserted into the detachable position through the cassette insertion slot.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a state in which a door is opened in a tape deck according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram when a tape cassette is carried out in the tape deck according to the embodiment of the present invention.

FIG. 3 is an explanatory diagram when a tape cassette is located at a set position and a door is in a hanging position;

FIG. 4 is an explanatory diagram showing a state when a cassette unloading operation is started.

FIG. 5 is an explanatory diagram showing a state in which a cassette unloading operation has been completed.

FIG. 6 is an explanatory view corresponding to FIG. 3 when the tape cassette is located at the set position and the door is in a hanging position.

FIG. 7 is an explanatory diagram when the tape cassette reaches the upper end of the upward path.

FIG. 8 is a view showing a state where a cassette unloading operation is completed.
FIG.

FIG. 9 is a schematic side view of a tape deck according to another embodiment of the present invention, showing a state when a cassette unloading operation is started.

FIG. 10 is an explanatory diagram schematically showing a state in which a cassette unloading operation has been completed in a side view;

FIG. 11 is a schematic side view illustrating a state in which the linkage between the driven gear and the arm is released after the cassette unloading operation is completed.

FIG. 12 is a schematic side view illustrating a state when the tape cassette is inserted into a detachable position.

FIG. 13 is an explanatory diagram schematically showing a state in which the loading of the tape cassette inserted into the attachment / detachment position is started;

FIG. 14 is an explanatory diagram schematically showing a state in which a concave portion passes a convex portion in a side view.

FIG. 15 is an explanatory diagram showing a schematic side view in which a state in which the cassette unloading operation is completed is partially broken.

FIG. 16 is a schematic front view illustrating a state in which the unloading of the driven gear and the arm is released after the cassette unloading operation is completed.

FIG. 17 is a schematic front view illustrating a state where the tape cassette is inserted into a detachable position.

FIG. 18 is a schematic front view illustrating a state when the loading of the tape cassette inserted into the attachment / detachment position is started.

FIG. 19 is an explanatory diagram showing a positional relationship between a door and a tape cassette in a conventional tape deck.

FIG. 20 is an explanatory diagram showing a positional relationship between a door and a tape cassette in a conventional tape deck.

FIG. 21 is an explanatory view showing problems of a conventional tape deck.

[Explanation of symbols]

 C Tape cassette C1 Front end of tape cassette 1 Door 12 Center of rotation 20 Door opening / closing mechanism 21 Lever 22 Horizontal axis (swinging fulcrum) 23 Engaging section 25 Movable cam member 30 Cassette transport mechanism 31 Follower gear 35 Arm 40 Drive gear 41 tooth portion (meshing portion) 51 side plate portion 52 guide hole portion 55 projection 80 cam mechanism 90 engagement / disengagement mechanism 91 concave portion 92 convex portion

Claims (10)

[Utility model registration claims] 1. A door in which a cassette is inserted and ejected, and a door is turned downward around the center of rotation positioned above the insertion and ejection opening to open the insertion and ejection opening. The tape cassette, which can be changed in posture between the postures and is inserted into the attachment / detachment position through the insertion / extraction opening and pulled out from the attachment / detachment position through the insertion / extraction opening, has an upward path from the set position to the loading mechanism to the attachment / detachment position. In a tape deck adapted to be carried out through a path, a door opening / closing mechanism for changing the posture of the door from a hanging posture to a lifting posture, and a cassette for carrying out a tape cassette at a set position to a detachable position. Having a transport mechanism,
A tape deck, wherein a posture changing operation by the door opening / closing mechanism for bringing the door from a hanging posture to a lifting posture is performed before a cassette carrying-out operation by the cassette carrying mechanism. 2. The transport path is formed by the upward path, a horizontal path extending between an upper end of the upward path and the attachment / detachment position, and is held at an upper end of the upward path. 2. The tape deck according to claim 1, wherein a front end of the tape cassette is positioned below the door in a lifting posture. 3. The door opening / closing mechanism includes a lever having a swing fulcrum at one position in a middle portion in a longitudinal direction and having an engagement portion linked to the door at one free end, and a movable cam member. The position of the other free end of the lever is controlled by the movable cam member, and the position of the other free end of the lever is controlled by the movable cam member. 3. The tape deck according to claim 1, wherein the joint changes the posture of the door from a hanging position to a lifting position. 4. The cassette transport mechanism includes a driven gear that is rotatable in forward and reverse directions, and an arm that is provided integrally with the driven gear and moves the tape cassette along the transport path. After the movable cam member controls the position of the other free end of the lever and the engaging portion brings the door from the hanging down position to the lifting position, it engages with the driven gear and moves the tape cassette upward. The tape deck according to any one of claims 1 to 3, wherein a meshing portion that reverses the driven gear in a direction in which the driven gear is raised along a path is provided on the movable cam member. 5. The driving gear according to claim 4, wherein the meshing portion is formed by a tooth portion of a driving gear for rotating the driven gear, and the movable cam member is provided on the driving gear. The tape deck described in. 6. A cassette receiving table for holding a tape cassette, a projection protruding laterally is provided on the cassette receiving table, and a side plate section is provided on a side portion of the cassette receiving table. 6. The guide plate according to claim 4, wherein a guide hole having the same shape as the transfer path is formed in the side plate, and the arm is engaged with the protrusion inserted through the guide hole.
The tape deck described in. 7. The cassette transport mechanism has a driven gear that is rotatable in the forward and reverse directions, and a swing center that is concentric with the driven gear, and is used to move the tape cassette along the transport path. An arm capable of swinging in the reverse direction, and the driven gear and the arm are mounted so as to be able to link and release the link, and the arm swings in the reverse direction to move the tape cassette from the set position to the attaching / detaching position. When moving the driven gear, the arm is linked to the driven gear to convert the reverse rotation of the driven gear into reverse swing of the arm, and after the arm conveys the tape cassette to the attaching / detaching position, the driven gear rotates reversely. When you do
The tape deck according to any one of claims 4 to 7, further comprising an engagement / disengagement mechanism that releases the linkage between the driven gear and the arm. 8. One of the driven side gear and the arm is attached to the other side member so as to be able to approach and separate from the other side member, and the one side member is always resilient in a direction in which the one side member approaches the other side member. The engaging and disengaging mechanism includes a concave portion provided separately to the driven gear and the arm, and a convex portion capable of being disengaged from the concave portion, and the arm is set to reversely swing to set the tape cassette. When moving from the position to the attaching / detaching position, the one side member approaches the other side member to allow the convex portion to engage with the concave portion, and the arm is driven after the tape cassette is transported to the attaching / detaching position. 8. The tape deck according to claim 7, further comprising: a cam mechanism for separating the one side member from the other side member when the gear rotates in reverse to separate the convex portion from the concave portion. 9. A tape deck in which the tape cassette is loaded and unloaded by a cassette transport mechanism between a mounting position of a tape cassette inserted and removed through a cassette insertion slot and a set position with respect to a loading mechanism. A transport mechanism, a driven gear that can rotate forward and reverse, and an arm that has a swing center that is concentric with the driven gear and that can swing forward and reverse to move the tape cassette along the transport path; And the driven gear and the arm are attached so as to be able to be linked and released from each other. When the arm swings backward to move the tape cassette from the set position to the detached position, the driven side The arm is linked to a gear to convert the reverse rotation of the driven gear into reverse swing of the arm, and the arm is a tape cassette. When driven gear is reversed after conveyed in the detachable position,
A tape deck comprising an engagement / disengagement mechanism for releasing the linkage between a driven gear and an arm. 10. One of the driven side gear and the arm is attached to the other side member so as to be able to approach and separate from the other side member, and the one side member is always resilient in a direction in which the one side member approaches the other side member. The engaging and disengaging mechanism includes a concave portion provided separately to the driven gear and the arm, and a convex portion capable of being disengaged from the concave portion, and the arm is set to reversely swing to set the tape cassette. When moving from the position to the attaching / detaching position, the one side member approaches the other side member to allow the convex portion to engage with the concave portion, and the arm is driven after the tape cassette is transported to the attaching / detaching position. The tape deck according to claim 9, further comprising a cam mechanism for separating the one side member from the other side member when the gear rotates in reverse to separate the convex portion from the concave portion.