JPH06101171B2 - Tape cassette ejection mechanism - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape cassette ejecting mechanism, and particularly, when ejecting a tape cassette in a loaded and mounted position, the tape cassette is engaged with the transfer table by the ejecting operation of the transfer table. Then, the present invention relates to a tape cassette ejection mechanism for ejecting and transporting the tape cassette so that the tape cassette protrudes from the tape cassette insertion position by a predetermined amount.

[Conventional technology]

Conventionally, when a tape cassette of this type is loaded from the cassette insertion position to the loading position or ejected from the loading position, the drive mechanism that moves the transfer table on which the cassette is placed by a drive source (for example, a motor) is a belt. , A combination of pulleys or a combination of a plurality of gears, a link mechanism, and the like are used, and each operation for loading and discharging the tape cassette on the transfer table is configured to be given by a dedicated drive source.

[Problems to be Solved by the Invention]

However, in the conventional tape cassette ejecting mechanism, the transfer table is driven by a signal when the tape cassette is artificially inserted into the transfer table at the tape cassette insertion position, and the tape is transferred to a predetermined mounting position and positioned, so that the tape is horizontally moved. When switching between each movement of vertical movement, a combination of various mechanisms is adopted, which complicates the mechanism and uses a dedicated drive source to ensure the movement. The same mechanism is also used when ejecting the tape cassette in the installed position.When ejecting the tape cassette, the tape cassette must be pushed in when the tape cassette is inserted and automatically returned to a position higher than the insertion position. An extra ejection stroke is required.Therefore, if the drive source for ejecting the tape cassette is the same drive source as when the tape cassette is inserted, only the ejection stroke is configured to be driven extra, and different stop positions can be detected and confirmed. Because you will need
The mechanism and electric control are complicated, the structure is large, and the maintenance is difficult.

Therefore, an object of the present invention is to reliably load a tape cassette at a mounting position by moving a transfer table, which is placed and transferred by a single drive source, into an inverted L shape that is horizontal and vertical.
At the time of ejecting the tape cassette at the mounting position, the ejecting operation of the transfer table engages the engaging member of the transfer table and the ejecting means, and the tape cassette can be pushed out by a predetermined amount in the vicinity of the tape cassette insertion port. To provide a discharge mechanism.

[Means for Solving the Problems]

In order to achieve the above object, the tape cassette ejecting mechanism according to the present invention is provided with a transfer table 10 on which the tape cassette 12 is placed and which is loaded and ejected between the tape cassette 12 insertion position and the tape cassette mounting position. A slider opening means for opening the cassette slider 24 by an artificial insertion operation of the tape cassette 12 is provided on the transfer table 10, and further, an engaging member 166 is provided on the transfer table 10 and a plurality of both sides of the transfer table 10 are provided. A pair of support shafts 52, 54 and a drive shaft 56 are provided, and a plurality of L-shaped guide passages 58, 60 and a through passage 62 are provided for horizontally and vertically guiding the support shafts 52, 54 and the drive shaft 56, respectively. The guide plates 14 and 14 are erected on the base 16, and a cam plate 20 that reciprocates with a single drive source is provided at a close position on either side of the guide plates 14 and 14, and the pair of guide plates is provided.
An output arm 68 that is rotatably supported by 14, 14 and that engages with the drive shaft 56 that is guided through the passage 62, and at least one of which is pivotally supported by the output arm 68 and that engages with the cam plate 20. A pair of transfer table transfer means 18 constituted by an input arm 74, and a synchronous drive transmission means for synchronously driving the pair of transfer table transfer means 18 with each other, and when the transfer table 10 is at the mounting position, Positioning means for positioning the tape cassette 12 by engaging a pair of holes 32, 32 of the tape cassette 12 with positioning pins 136, 136 standing on the base 16 are provided, and the transfer table 10 at the mounting position is provided.
A cassette ejecting means for ejecting the tape cassette 12 by engaging the upper tape cassette 12 with the engaging member 166 of the transfer table 10 by the ejecting operation of the transfer table 10 is provided. The other end of each of the ejection arm 150 formed longitudinally with respect to the engagement arm 146 provided with the engagement pin 144 that engages with the engagement member 166 of the transfer table 10 and the engagement arm 146 provided with the contact pin 148 at one end. When the tape cassette 12 is loaded and ejected, the portions are axially supported by being superposed on a support shaft 142 provided at one end of a lid plate 140 fixed to the pair of guide plates 14 and abutting on the engagement arm 146. A locking portion 154 for restricting the opening angle of the pair of arms at a predetermined angle is provided at the other end of the discharge am 150, and the locking portion 154
A torsion coil spring 156 whose one end abuts on is fitted into the support shaft 142, and a locking portion 152 which abuts the other end of the torsion coil spring 156 is provided at the other end of the engaging arm 146, and the discharge arm 150 is provided. A part of the discharge arm 150 and a spring 162 stretched around the cover plate 140 are provided so as to urge the tape cassette 12 in the loading direction, and the transfer table 1 is discharged when the transfer table 10 is discharged.
It is characterized in that only the tape cassette 12 in 0 is pushed out from the tape cassette insertion port by a predetermined amount and discharged.

[Action]

According to the tape cassette ejection mechanism of the present invention, loading of the tape cassette is started with the cassette slider opened by the artificial insertion operation of the tape cassette on the transfer table at the tape cassette insertion position. The transfer table on which the cassette is placed is moved to a predetermined mounting position by the inverted L-shaped movement while its supporting portion is guided by the transfer table transfer means to the guide path of the guide plate. In this case, when the transfer table is horizontally moved backward, the engaging member of the transfer table engages with the engaging portion provided at one end of the engaging arm of the discharging means, and the engaging arm is pressed and swung against the elastic member. After that, when the disengagement is released by the lowering operation of the transfer table, the engaging arm swings back to the original position, and by continuing the lowering operation, the tape cassette has a pair of holes and positioning means on the base. It is positioned and mounted by. When the tape cassette in the mounting position is ejected, when the transfer base is moved horizontally after the engaging member of the transfer base and the engaging portion of the engaging arm are engaged by the upward transfer along the guide path of the transfer base. The ejection arm horizontally swings together with the engagement arm engaged with the engagement portion, whereby the ejection arm abuts the lid portion of the tape cassette, and the abutment portion of the ejection arm is determined by the transfer table ejection movement amount. A large amount of movement can be obtained, and the extra predetermined amount of movement allows the tape cassette to project from the insertion port.

〔Example〕

Next, an embodiment of a tape cassette ejection mechanism according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows an embodiment of a tape cassette ejection mechanism according to the present invention, and is a perspective view of an essential part of the ejection mechanism.
Reference numeral 140 denotes a cover plate, and 142 denotes a support shaft fixed to the cover plate 140. The support shaft 142 has an engagement arm 146 having an engagement pin 144 at one end and an abutment pin 148 at one end. Discharge arm 150
Is pivotally supported, and the pair of arms is swingably supported by the support shaft 142. Further, engaging portions 152 and 154 are formed near the support shaft 142 of the engaging arm 146 and the discharging arm 150, respectively, and the end portions of the torsion coil springs 156 inserted into the support shaft 142 are engaged with the engaging portions 152 and 154, respectively. Then, the pair of arms is biased toward the open leg, and the open leg angle is limited by the locking portion 154 of the discharge arm 150. Further discharge arm
A spring locking portion 158 is provided on the 150, and a discharge arm 15 is provided by a spring 162 stretched over the locking portion 160 of the lid plate 140.
0 is urged in the loading direction (arrow direction), and the abutment pin 148 of the ejection arm is abutted against the stopper 164 provided on the cover plate 140 to open one set of arms at a predetermined angle, and the original position ( It is held at the position of the two-dot chain line in the figure).

Next, a loading mechanism for loading the tape cassette at a predetermined loading position will be described with reference to FIG. FIG. 2 is an exploded perspective view of the loading mechanism. In the figure, 10 is a transfer table (hereinafter referred to as a cassette house), 12 is a known tape cassette mounted on the cassette house 10, and 14 is a left and right side.
A pair of guide plates as a set, 16 is a base supporting the guide plates, 18 is a transfer table transfer means rotatably supported by the pair of guide plates 14, and 20 is linearly moved by a single drive source. A part of cam plate is shown.

3 (1) and 3 (2) are perspective views of a known tape cassette as viewed from the front and back sides, respectively.

In the figure, 24 is a slider provided on the tape cassette 12 so as to be movable in the direction of arrow a, 26 is a lid rotatably supported about a support shaft 28 in the direction of arrow b, and 30 is engraved on the lid. Notches 32 are a pair of holes exposed when the slider 24 is opened. Tape cassette slider
24 is locked by a pair of lock portions 34, and the closed state of the slider 24 is maintained. Therefore, in order to move the slider 24 open, it can be opened by releasing the lock by simultaneously pressing the pair of lock portions 34, but the slider is always biased by a spring (not shown) in the closing direction. It is configured so that it does not open unless an external force that overcomes the spring is applied.

Next, a cassette house 10 for mounting the tape cassette shown in FIG. 2 and loading and positioning it at a predetermined mounting position will be described.

The cassette house 10 includes a cassette holder 36 formed by bending a steel plate into a U-shape, and a support member (hereinafter referred to as a hook) centered on a pair of pins 38 on the upper insides of the left and right rising side plates 37.
40 is swingably supported. An upward claw 42 is formed at an upper end of one end of the hook 40, and the claw 42 is engaged with a part of an upper cover plate (not shown) only when the cassette house 10 is at the tape cassette insertion position. The other ends of the hooks 40 are biased by springs 44, respectively, and the biasing force obtains the engagement holding force of the hooks 40. Also,
The cassette house 10 is provided with a slider opening means, which is an unlocking portion of the cassette slider 24 formed in the shape of an elongated protrusion on the upper surface of the horizontal bottom plate 46 of the cassette house 10.
48 and a pair of abutting parts 50 projecting in an L-shape at the end of the bottom plate 46. When the tape cassette 22 is artificially inserted horizontally, the pair of abutting parts shown in FIG. After the lock portion 34 is first contacted with the lock portion 34 and the lock portion 34 is released, the pair of contact portions 50 of the bottom plate 46 of the cassette house 10 passes through the notch portion 30 of the lid 26 and is brought into contact with the end portion of the slider 24, and is further inserted. By doing so, the slider 24 is engaged and held by the lock portion 34 in the completely opened state, whereby the opened state of the slider is obtained. In this case, the bottom surfaces of the pair of hooks 40 opposite to the claws 42 of the hooks 40 contact the top surface of the tape cassette 12 when the tape cassette is inserted. By this abutting operation, the pair of hooks swing around the pin 38, and the claw 42 is lowered to release the engagement.

Further, the cassette house 10 is provided with a plurality of support shafts on the outside of both end plates 37 thereof, and these support shafts are composed of a pair of drive shafts 54 and two sets of support shafts 52, 54. A U-shaped engaging member 16 that partially extends the upper side surface of the house 10 and folds it horizontally to open toward the side surface.
6, the engaging member 166 is provided at the tip of the engaging arm 146 so that the engaging pin 144 provided vertically downward can be engaged with the cassette house 10 when the cassette house 10 is ejected. .

Next, the transfer table transfer means will be described with reference to FIG. That is, the two sets of support shafts 52, 54 are engraved on the pair of guide plates 14, and one end of each of the two sets of inverted L-shaped guide paths (hereinafter referred to as guide grooves) 58, 60 intersecting with each other. The pair of drive shafts 56 also penetrate a pair of through passages 62 of the same shape as the guide groove 58 formed in the guide plate 14, and one ends of the drive shafts 56 project from the side surfaces of the guide plate 14, respectively. It is engaged with a transfer table transfer means 18 which is rotatably supported by an installed shaft 64.

The transfer table transfer means 18 is provided with a gear 66 having teeth cut on a part of the outer circumference of a disk made of a steel plate, and an output arm 68 is extended to the gear 66. Also this output arm 68
An L-shaped through hole 70 is formed at the end of the output arm 68, and a pin 71 projects from a part of the output arm 68.

Further, the output arm 68 is pivotally supported by the output arm 68 and the input arm 74 via a boss 72 having a hole 73 formed in the center thereof. An engaging pin 76 is projectingly provided at one end of the input arm 74, and a penetrating arc hole 78 centered on the hole 73 is formed, and the pin 71 of the output arm 68 is inserted to define the pivotal range of the mutual arms. It is limited to within the angle. A torsion coil spring 80 is wound around and attached to a part of the outer periphery of the boss so that one end of the spring is engaged with the pin 71 and the other end is engaged with a locking portion 82 formed at one end of the input arm 74. When stopped, the extension of the spring is exposed to the L-shaped through hole 70, and the transfer table transfer means 18 is constructed.

Next, a cam plate 20 that linearly reciprocates by rotation of a single drive source (motor) (not shown) by engagement of a gear and a rack gear.
This will be described with reference to FIGS. 4 and 5.

The cam plate 20 is provided with an inverted L-shaped cam hole 84 penetrating therethrough and a substantially mountain-shaped penetrating cam hole 86, and the input arm 74 is formed in the cam hole 84.
The engaging pin 76 of is engaged.

That is, as shown in the figure, when the cam plate 20 is linearly moved reciprocally by the activation of a motor (not shown), the engagement pin 76 engaged with the cam hole 84 moves in the cam hole 84 to move the input arm.
The input arm 74 and the output arm 68, which is pivotally supported, can be made to swing in the same angle, and the output arm 68 can also be made to cooperate in the same direction.

Therefore, the cam plate 20 shown in FIG. 5 is in the retracted position (right side in the figure).
, The engaging pin 76 is located at the lower end of the cam hole 84, and when the cam plate 20 is advanced to the left in this state, the engaging pin 76 moves in the cam hole 84 from the R portion to the vertical straight line portion. Move to
This movement allows the input arm 74 to swing counterclockwise.

On the other hand, a door 90, which is a sealing means, is installed at the cassette insertion port 88.
A support pin 94 is swingably supported about 92, and a locking pin 94 is provided on a part of the door 90 in parallel with the shaft 92. This locking pin
Reference numeral 94 engages with a circular arc hole 96 formed around the shaft 92 formed in the guide plate 14 to limit the opening angle of the door.

Further, the shaft 98 provided on the guide plate 14 has a cam portion at one end.
102 and the chevron-shaped cam hole 8 of the cam plate 20 at the other end.
A swing arm 100 having an engaging portion 104 that engages with 6 is swingably supported. Furthermore, the door 90 is a torsion coil spring.
The insertion opening 88 is biased in the sealing direction by 106, and the engagement pin 94 of the door is in sliding contact with the cam portion of the swing arm 100. In the illustrated state, the cam plate 14 is in the retracted position and the door 90 is in a hermetically closed state. However, the door can be opened by artificially applying an external force.
However, when the cam plate 20 is located at the front or rear, the door 90 can be easily opened by applying an external force even if the door 90 is closed. Further, when the engagement portion 104 of the swing arm 100 is at the apex of the chevron-shaped cam hole 86 due to the movement of the cam plate 20, the door 90 is opened by the sliding contact with the cam portion 102 of the swing arm 100, and the door 90 is opened. The locking pin 94, which is in contact with the end of the arc hole 96, is held by the cam portion 102 of the swing arm 100, and the open state is held by the cam hole 86.

The retracted position of the cam plate 20 shown in FIG. 4 indicates a position when the tape cassette is mounted at a predetermined position, and in this case, the engagement pin 76 of the input arm 74 and the cam hole 84 are shown in FIG. Holds a positional relationship.

Next, the synchronous drive transmission means for synchronously driving the pair of left and right transfer table transfer means will be described with reference to FIG.

The synchronous shaft 110 is inserted through the pair of guide plates 14 and is rotatably supported. Gears 112 are provided at both ends of the synchronous shaft 110, and the gears 112 are connected to the transfer table transfer means 18 via an idle gear 114 provided in the middle of the transfer table transfer means 18.
Meshes with the gear 66 of the output arm 68 of the.

Therefore, the rotational drive of the transfer table transfer means by the linear movement of the cam plate 20 is also transmitted to the transfer means 18 on the opposite side via the pair of gears 112, and the transmission of the synchronous rotational drive is achieved.

Next, the lid opening means of the tape cassette will be described with reference to FIGS. 7 to 9.

That is, the lid opening means 116 is provided on one of the rising side plates 37 of the cassette house 10, on the left side in the figure.

In this lid opening means 116, a bracket 120 is swingably supported on a rising side plate 37 of the cassette house 10 around a shaft 118, and a locking pin 122 that engages with the lid 26 projects inside the bracket 120. An engaging pin 126 that engages with a guide plate 124 engraved on the inside of the opposing guide plate 14 is provided on the outside while protruding.

That is, the opening operation by the lid opening means will be described below. When the tape cassette 12 is inserted into the cassette house 10 by an artificial insertion operation, the slider 24 opens.
The jaw portion of the lid 26 is exposed.

In this state, in the linear movement operation of the cam plate, the cassette house is pulled in and the cassette loading operation is started.

The cassette house 12 is horizontally moved by being guided by the inverted L-shaped guide grooves 58, 60, and at the same time, the bracket 120 is guided by the upwardly inclined guide groove 124 via the engaging pin 126, so that the movement proceeds. As the locking pin 122
The locking pin 122 located on the jaw portion of the lid 26 is gradually rocked and raised by the engagement of the jaw portion with the lid 2
6 is opened and the lid is fully opened by vertical movement of the cassette house.

Next, the loading start detection mechanism of the tape cassette will be described with reference to FIG.

That is, the loading and unloading operations of the cassette house 10 are provided by the pair of transfer table transfer means 18 provided by the linearly moving cam plate 20. The structure of the transfer table transfer means is as described above, and when the cassette house 10 is located at the tape cassette insertion position, the output arm 68 is
The drive shaft 56, which is inserted into and engaged with the L-shaped through hole 70, stops at the end of the horizontal portion of the inverted L-shaped through passage 62 (that is, the end opposite to the state shown in FIG. 4). There is.

That is, the cam plate 20 in this state is in the forward position opposite to the position of the cam plate 20 shown in FIG. 5, and in this case, the engagement pin 76 of the input arm 74 is in the inverted L-shaped cam hole 84. The engaging portion 104 of the swing arm 100 is located at the vertical straight line portion, and at the same time, the engaging portion 104 of the swing arm 100 is also located at the right end in the drawing of the substantially cam-shaped penetrating cam hole 86.

Here, when the tape cassette 12 is inserted into the cassette house 10 at the insertion position and the drive source is activated to move the cam plate 20 backward (right side in the figure), the input arm 74 is moved to the vertical straight line portion of the cam hole 84. The engagement pin 76 rotates clockwise through the engaged engagement pin 76, whereby the engagement pin 76 is guided by the cam hole 84 and moves to the position (right end) shown in FIG.

By the rotation operation of the input arm 74, the output arm 68 shown in FIG. 4 also rotates clockwise in cooperation with the input arm 74,
The drive shaft 56 of the cassette house 10, which is inserted into and engaged with the L-shaped through hole 70 of the output arm 68, moves from the horizontal portion of the through hole 62 shown in the drawing to the vertical straight line portion and abuts on the lower end portion of the through passage 62. Stop.

In the course of the turning operation of the output arm 68, the drive shaft 56 moves in the L-shaped through hole 70 together with the turning operation of the output arm 68,
Even when the drive shaft 56 reaches the lower end portion (final position) of the through passage 62, the output arm 68 still rotates slightly more than the final position of the through passage 62 of the drive shaft 56, whereby the drive shaft 56 is rotated. Is
It enters into one short groove of the L-shaped through hole 70 against the torsion coil spring 80 and is elastically pressed and urged by the action force of the coil spring 80 generated by this movement, and the drive shaft at the end of the through passage 62.
56 is restrained and held by the coil spring 80.

On the other hand, a pair of left and right gears forming the synchronous rotation transmitting means.
A pair of dogs 130 are planted in a boss portion 128 of one of the gears 112 so as to penetrate the center portion thereof and project both ends in the radial direction. Further, a detecting portion (hereinafter referred to as a leaf switch) 132 is provided on the side of the guide plate 14 above the gear 112, and when the actuator 134 of the leaf switch makes contact with the dog end 130a, the tape of the cassette house 10 is removed. The cassette insertion position (the forward end position of the cam plate 20) is detected.

Here, when the tape cassette 12 is pressed into the cassette house 10 from the horizontal direction, the slider 24 of the tape cassette 24
Is opened by the slider opening means, and is placed at a fixed position in the cassette house 10. In this state, the leaf switch still holds the ON state. When the pressing force of the tape cassette 12 is further applied, the drive shaft of the cassette house 10
The output arm 68 engaged with 56 is a pin with the input arm 74.
The output arm 68 swings against the torsion coil spring 80 urging the engaging pin 71 by the pressing force because the output arm 68 is pivotally supported in the range of the arc hole 78 via 71. To be done. This swinging motion causes the gear 66 to slightly rotate, and this rotation is transmitted through the synchronous drive transmission means to the gear 112 on the opposite side to the detection unit 132.
As a result, the dog 130a rotates counterclockwise (see FIG. 7), actuates the actuator 134 of the leaf switch 132, and outputs a charging start signal by closing the contacts. When the motor is activated by this output signal, the cam plate 20 shown in FIG. 5 is linearly retracted to start loading the tape cassette. The output arm 68 before the motor is driven is driven by an artificial insertion operation, but an arc hole is provided for the input arm 74 pivotally supported by the output arm 68.
It only swings within the range of 78, and in this case, the input arm is in the fixed position stopped state by the engagement with the cam plate 20.

Next, the tape cassette pressing and fixing means when the tape cassette is at the mounting position will be described with reference to FIG.

The cassette house 10 on which the tape cassette 12 is placed is guided along the two sets of inverted L-shaped cam grooves 58 and 60 by the transfer table transfer means 18, and is moved to a predetermined mounting position by the receding movement of the cam plate 20.

In this case, a pair of tapered tapered positioning pins 136 are erected on the base 16 and the positioning pins 136 are exposed when the slider 24 of the tape cassette 12 is opened.
It is supposed to face.

The cassette house 10 has an inverted L-shaped cam groove 5 up to the mounting position.
The output arm 68, which is guided and transferred to the drive shafts 8 and 60 and is engaged with the drive shaft 56, starts the vertical lowering operation. By this lowering operation, the pair of holes 32 of the tape cassette engages with the positioning pin 136, but the cassette house 10 is further lowered slightly by swinging the output arm 68 in the counterclockwise direction (see FIG. 7). Therefore, since the tape cassette 12 is positioned and abutted by the positioning pin 136 and cannot be lowered, only the tape cassette 12 is pushed up by the descending operation of the cassette house. However, in this case the tape cassette 12
When the tape cassette 1 is pushed up, it abuts on the bottom of a pair of hooks 40 provided on the upper part of the cassette house 10 and is elastically held between the bottoms of the hooks 40 and the positioning pins 136.
The upper and lower parts of 2 are restrained.

In this case, the pressing force against the tape cassette 12 is given by the swing of the output arm 68, and the output arm 68 tries to swing more than the tape cassette contact position by the cam plate 20 that moves a predetermined amount via the input arm 74. To do. This extra swing of the input arm 74 also swings the output arm 68 integrally in the counterclockwise direction (see FIG. 7).
The drive shaft engaged with is swingable within the range of the L-shaped through hole 70 of the output arm. Therefore, even if the downward movement of the tape cassette 12 is restrained, the tape cassette is elastically elastically urged by the urging force of the torsion coil spring 80 that urges the drive shaft 56 of the cassette house by the lowering operation of lowering the cassette house 10. Can hold twelve.

Next, the operation of the tape cassette ejection mechanism according to the present invention will be described.

As described above, when the tape cassette 12 is at the mounting position, the pair of arms forming the ejecting unit is at the position shown by the chain double-dashed line in FIG.

In this case, the engaging pin 144 of the engaging arm 146 is positioned vertically downward at the upper part of the engaging position of the U-shaped engaging member 166 that is horizontally bent from the side surface of the cassette house 10 and opens toward the side surface. There is. The cassette house 10 is driven via the transfer table transfer means 18 by the linear forward movement of the cam plate 20.

That is, as shown in FIG. 5, the engaging pin 76 provided on the input arm 74 of the transfer table transfer means 18 reaches the arc portion of the cam hole 84 by the straight forward movement of the cam plate 20 in the direction of the arrow, and the cam plate further moves.
The forward movement of 20 causes the input arm 74 to swing counterclockwise. As a result, the output arm 68 pivotally supported by the input arm 74 also swings together, and this swinging causes the cassette via the drive shaft 56 engaging with the L-shaped through hole 70 of the output arm 68. The house 10 is transferred. The cassette house 10 is vertically lifted by being guided by the guide paths 58, 60 for guiding the support shafts 52, 54 thereof, and the ascending operation causes the engaging members 166 of the cassette house.
Engages a downwardly projecting engagement pin 144 at one end of an engagement arm 146 of the ejection means.

Further, the forward movement of the cam plate 20 (leftward in FIG. 5)
When the input arm 74 swings and the pin 76 moves from the circular arc portion of the cam hole 84 to the vertical straight portion, the support shafts 52, 5
4 shifts in the horizontal direction from the arc portions of the guide paths 58 and 60. In this case, the engaging pin 76 of the input arm 74 moves to the vertical portion in the cam hole 84 by the forward movement of the cam plate 20, and
Rock counterclockwise.

By this horizontal movement, the engaging member 166 of the cassette house 10
The engaging arm 146 that is engaged with oscillates horizontally about the support shaft 142, and the discharge arm 150 together with the engaging arm 146 is also provided with a spring 162 that engages with the engaging portions 152 and 154. It is elastically pressed and swings in the discharging direction.

In this case, since the discharge arm 150 is formed to be longer than the engagement arm 146, the contact pin 148 has the engagement arm 146.
Rocks more than.

Therefore, only the tape cassette in the cassette house can be sufficiently protruded from the insertion port by a predetermined discharge movement of the cassette house, which makes it easy to artificially remove the tape cassette.

〔The invention's effect〕

As is apparent from the above-described embodiments, according to the tape cassette ejection mechanism of the present invention, the tape cassette is placed, and the transfer table for loading and unloading between the tape cassette insertion position and the tape cassette mounting position is provided, The transfer table is provided with slider opening means for opening the cassette slider by an artificial insertion operation of the tape cassette, and further, the transfer table is provided with an engaging member and a plurality of support shafts are provided on both sides of the transfer table to support them. A pair of guide plates provided with a plurality of guide paths for respectively guiding the shafts are erected on the base, and a cam plate reciprocating with a single drive source is provided at a position close to one of the guide plates, An output arm that is rotatably supported by a pair of guide plates and that engages with the pair of specific support shafts that are guided through the guide path, and at least one of the output arms that is pivotally supported by the output arm. A pair of transfer table transfer means configured by an input arm engaging with the cam plate is provided, and synchronous drive transmission means for synchronously driving the pair of transfer table transfer means is provided, and the transfer table is mounted on the base. Positioning means for engaging the pair of holes of the tape cassette to position the transfer table when in the mounting position is provided, and engaging the tape cassette in the mounting position with the engaging member of the transfer table during the discharging operation of the transfer table. The cassette ejecting means ejects the tape cassette. The ejecting means is provided with a support shaft at one end of a lid plate fixed to the upper part of the pair of guide plates. The support shaft is engaged with the transfer table at one end thereof. An engaging arm provided with an engaging portion for engaging a member and an abutting portion pivotally supported by the engaging arm and provided with an abutting portion at one end thereof, so that a pair of arms including a discharge arm longer than the engaging arm can be rocked. Support the set of The arm is biased toward each other by elastic members and a stopper member for restricting the leg opening angle is provided on one of the arms, and the ejection arm is composed of an elastic member for biasing in the tape cassette loading direction. By doing so, the tape cassette can be sufficiently projected from the insertion port only with a predetermined discharge transfer amount of the transfer table for loading and discharging with a single drive source, and the tape cassette can be removed from one set of arms provided on the transfer table. Since it is composed of a simple mechanism, the entire device can be downsized, and the tape cassette can be reliably ejected, and the reliability can be improved. Furthermore, since the mechanism is simple, the maintenance of the device is easy, and one set of arms with different lever ratios can be prepared and exchanged with this to change the discharge amount as needed, There is an advantage that operability can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of an ejection mechanism showing an embodiment of a tape cassette ejection mechanism according to the present invention, and FIG. 2 is an exploded perspective view showing an embodiment of a tape cassette loading mechanism according to the present invention. 3 (1) is a front perspective view of a known tape cassette used for loading of the present invention, FIG. 3 (2) is a rear perspective view of the known tape cassette, and FIG. 4 is a cam of FIG. FIG. 5 is a view from the arrow A of FIG. 2 with the plate removed,
FIG. 6 is a plan view of FIG. 2, FIG. 7 is a view taken in the direction of arrow B of FIG. 2 with the cam plate removed, and FIG. 8 is B of the transfer table without the guide plate of FIG. 9 is a partial plan view of FIG. 7. 10 …… Cassette house (transfer table) 12 …… Tape cassette, 14 …… Guide plate 16 …… Base, 18 …… Transfer table transfer means 20 …… Cam plate, 24 …… Slider 26 …… Lid, 28 …… Support shaft 30 …… notch, 32 …… hole 34 …… lock part, 36 …… cassette holder 37 …… standing plate, 38 …… pin 40 …… hook (supporting member), 42 …… pawl 44 …… spring, 46 …… Bottom plate 48 …… Unlock part, 50 …… Abutting part 52,54 …… Support shaft, 56 …… Drive shaft 58,60 …… Guide path, 62 …… Through path 64 …… Axis, 66… … Gear 68… Output arm, 70… Through hole 71… Pin, 72… Boss 73… Hole, 74… Input arm 76… Engagement pin, 78… Arc hole 80… Torsion coil spring , 82 …… Locking part 84 …… Cam hole, 86 …… Through cam hole 88 …… Cassette insertion port, 90 …… Door 92 …… Shaft, 94 …… Locking pin 96 …… Arc hole, 98 …… Axis 100 ... Swing arm, 102 ... Part 104 ... Engaging part, 106 ... Torsion coil spring 110 ... Synchronous shaft, 112 ... Gear 114 ... Idle gear, 116 ... Lid opening means 118 ... Shaft, 120 ... Bracket 122 ... Locking pin , 124 ...... Guide groove 126 ...... Engagement pin, 128 ...... Boss part 130, 130a, 130b ...... Dog 132 ...... Leaf switch (detection part) 134 ...... Actuator 140 ...... Cover plate, 142 ...... Spindle 144 ...... Engagement pin 146 ...... Engagement arm 148 ...... Abutment pin 150 ...... Discharge arm, 152,154,160 …… Locking part 156 …… Twisted coil spring 158 …… Spring locking part 164 …… Stopper, 162 …… Spring 166 ... Engaging member

Claims (1)

[Claims] 1. A transfer table 10 for mounting and ejecting a tape cassette 12 is provided between a tape cassette 12 insertion position and a tape cassette mounting position, and the tape cassette 12 is artificially inserted into the transfer table 10. A slider opening means for opening the cassette slider 24 by an operation is provided, an engaging member 166 is further provided on the transfer table 10, and a plurality of support shafts 52, 54 and a drive shaft 56 are provided on both sides of the transfer table 10. Support shaft 5
2, 54 and a pair of guide plates 14, 14 provided with a plurality of inverted L-shaped guide paths 58, 60 for guiding the drive shaft 56 horizontally and vertically and a through path 62 are erected on the base 16. A cam plate 20 that reciprocates with a single drive source is provided at a proximity position on either side of the guide plates 14 and 14, and the pair of guide plates is provided.
An output arm 68 that is rotatably supported by 14, 14 and that engages with the drive shaft 56 that is guided through the passage 62, and at least one of which is pivotally supported by the output arm 68 and that engages with the cam plate 20. A pair of transfer table transfer means 18 constituted by an input arm 74, and a synchronous drive transmission means for synchronously driving the pair of transfer table transfer means 18 with each other, and when the transfer table 10 is at the mounting position, Positioning means for positioning the tape cassette 12 by engaging a pair of holes 32, 32 of the tape cassette 12 with positioning pins 136, 136 standing on the base 16 are provided, and the transfer table 10 at the mounting position is provided.
A cassette ejecting means for ejecting the tape cassette 12 by engaging the upper tape cassette 12 with the engaging member 166 of the transfer table 10 by the ejecting operation of the transfer table 10 is provided. The other end of each of the ejection arm 150 formed longitudinally with respect to the engagement arm 146 provided with the engagement pin 144 that engages with the engagement member 166 of the transfer table 10 and the engagement arm 146 provided with the contact pin 148 at one end. When the tape cassette 12 is loaded and ejected, the portions are axially supported by being superposed on a support shaft 142 provided at one end of a lid plate 140 fixed to the pair of guide plates 14 and abutting on the engagement arm 146. A locking portion 154 for restricting the opening angle of the pair of arms at a predetermined angle is provided at the other end of the discharge arm 150, and the locking portion 1
A torsion coil spring 156, one end of which abuts on 54, is fitted into the support shaft 142, and a locking portion 152, which abuts the other end of the torsion coil spring 156, is provided at the other end of the engaging arm 146, and the discharge arm 150 is provided. A part of the discharge arm 150 and a spring 162 stretched around the cover plate 140 are provided so as to bias the tape cassette 12 in the loading direction of the tape cassette 12, and the tape cassette 12 in the transfer table 10 is discharged by the discharge operation of the transfer table 10. A mechanism for ejecting a tape cassette, characterized in that only a predetermined amount is pushed out from the tape cassette insertion port and ejected.