JPH0423261A - Cassette loader for tape player - Google Patents

Abstract

PURPOSE:To diminish resistant force at the time of inserting a cassette pack by inserting the cassette pack into a guide member under the state of a cassette ejecting member situated in a standby position and loading it into a tape driving position with a driving member. CONSTITUTION:When the cassette pack C is inserted from its standby state, a driving gear 11 is driven clockwise, and a driving pin 15 at the tip of a driving lever 14 is entered into F part of a linear locus of a guide groove 2a of a guide bracket 2, and hence the guide bracket 2 is driven to the right, and the pack C is loaded into the tape driving position. Then, at the time of ejecting the pack C, the driving gear is driven anticlockwise, and after pressing out the pack C by pressing pins 7 and 8, the driving gear 11 is turned clockwise to be in the standby position. Since the pressing pins 7 and 8 are never advanced in this standby position, their resistance is not like the one at the time of inserting the pack C, but only light resistant force due to holding force of a leaf spring, etc., provided to the guide bracket 2 or a cassette holder is applied.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cassette loading device that guides a cassette back to a tape drive position and ejects the cassette back.

[Prior Art] A rotary head type tape player such as a DAT is provided with a cassette loading device. In this device, when a cassette back is inserted, the cassette back is pulled into a tape drive position. Furthermore, when the cassette pack is ejected, the cassette bag is pushed out toward the ejection port.

In the conventional cassette loading device of this kind, a guide bracket is provided on the chassis, and when the cassette back is inserted into this and the guide bracket is manually pushed against the force of the spring, the movement of the guide bracket is detected, and then The guide bracket is retracted by the motor power,
The cassette pack is guided to the tape drive position. Further, when the cassette is ejected, the guide bracket is moved forward toward the ejection port by the power of the motor, and the guide bracket is further pushed out by the force of the spring, and the cassette pack is guided to the ejection port.

[Problem to be Solved by the Invention 1] In the conventional cassette loading device described above, the spring that urges the guide bracket toward the discharge port acts as a resistance force when inserting the cassette pack. When ejecting the cassette pack, the guide bracket cannot be returned toward the ejection port without a certain amount of spring force; however, this strong spring biasing force acts as a resistance force when inserting the cassette pack. In a conventional example of such a structure, the more reliable the ejection operation of the cassette pack is, the greater the resistance when inserting the cassette pack.

The present invention solves the above-mentioned conventional problems, and it is an object of the present invention to provide a cassette loading device for a tape player that has a small resistance force when inserting a cassette pack, is easy to insert, and can reliably eject a cassette pack. The purpose is

[Means for Solving the Problems] A cassette loading device according to the present invention includes a guide member that feeds a cassette pack to a tape drive position, a drive member that moves the guide member backward into the chassis and feeds the cassette pack, and a guide member. It is characterized by being provided with a bag ejecting member that is in a standby position when the pack is in the forward position, and a pressing member that drives the pack ejecting member further from the standby position in the back pushing direction when the pack is ejected. be.

Further, in the above means, the driving member for retracting the guide member and the pressing portion for driving the bag discharge member are the same rotary lever, and this rotary lever is rotatably driven by the morph.

[Operation] In the above means, the cassette pack is inserted into the guide member while the cassette ejection member is in the standby position, and after the cassette pack is inserted, the drive member pulls in the guide member,
A cassette pack is loaded into the tape drive position. Further, when ejecting the cassette, the guide member is advanced within the chassis by the driving member, and then the cassette ejecting member is driven forward from the standby position, and the cassette pack is ejected by this force. After the cassette pack is ejected, the guide member is returned to the standby position.

[Example 1 Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 are plan views showing the structure of the cassette loading device in each operating state, and FIGS. 4 to 6 are plan views showing the main parts of the device in each operating state. The figures show the same operating state, FIGS. 2 and 5, and FIGS. 3 and 6 show the same operating state. Also, Figure 7 shows Figures 1 to 3.
0 is a side view of the device shown in the V■ arrow direction, and FIG. 8 is a time chart showing the detection operation by the switch. Showing the chassis. 1a
is the top plate of chassis 1.

A guide bracket 2 is supported on the chassis 1. As shown in the side view of FIG. 7, the guide bracket 2 is supported by the chassis 1 so as to be movable in the left and right directions in the figure. A cassette holder (not shown) is held by the guide bracket 2, and a cassette pack C is held therein. When the guide bracket 2 moves rightward from the position +A+ to the position iB) in FIG. 7, the cassette holder is guided by the guide groove having a trajectory as indicated by α in FIG. As a result, the cassette holder, cassette, and door pack C are moved to the position shown in (b),
It is loaded into a tape drive position such as a reel stand. Alternatively, the cassette pack C is held directly on the guide bracket 2, and when the guide bracket 2 moves to the right in FIG. 7, the guide bracket 2 descends as it is;
The structure may be such that the cassette pack C is loaded at the tape drive position.

A pair of ejection levers 3 and 4 are provided on the inner surface of the top plate 1a of the guide bracket 2, and are rotatably supported by shafts 5 and 6, respectively. The ejection bars 3 and 4 are formed with teeth 3a and 4a which mesh with each other to enable the ejection levers 3 and 4 to rotate in opposite directions in synchronization. Pressing bins 7 and 8 for pushing out the cassette bag C are fixed at the tips of the ejection levers 3 and 4, respectively. A spring 9 is applied between one ejection lever 3 and the guide bracket 2, and its elastic force urges the ejection lever 3 to rotate clockwise and the ejection lever 4 to rotate counterclockwise. There is. Also, the ejection lever 4 has an arm 4.
b is integrally formed. A guide groove 2a is formed at the rear end of the top plate of the guide bracket 2. This guide groove 28 consists of an E part with a circular arc locus and an F part with a straight line locus.

A drive gear 11 is rotatably supported by a shaft 12 on the top plate 1a of the chassis 1. Further, a shaft 13 is provided on the lower right side in the figure, and a drive lever 14 is rotatably supported on this shaft. A drive pin 15 is provided at the tip of the drive lever 14, and the drive pin 15 is inserted into the guide groove 28 of the guide bracket 2. As shown in FIGS. 4 to 6, the drive lever 14 has a guide groove 14a formed therein. This guide groove 1'4a is composed of a G section with a straight line trajectory and an H section with a circular arc trajectory. An arm 11a is integrally provided on the drive gear 11, and a connecting pin 16 is fixed to the tip of the arm 11a, and the connecting pin 16 is inserted into the guide groove 14a of the driving lever 14.

Further, a pair of detection levers 21 and 23 are provided on the top plate 1a of the chassis 1. The first detection lever 21 is rotatably supported by a shaft 22, and the second detection lever 23 is rotatably supported by a shaft 22.
It is rotatably supported. And each detection lever 21
and 23 are connected by a spring 25. Due to the elastic force of the spring 25, the first detection lever 21 is biased clockwise, and the second detection lever 23 is biased counterclockwise. As shown in FIG. 1, a pair of switches SW and SW 2 are provided on the top plate 1a of the chassis 1, and tips 21a and 2 of each detection lever 21 and 23 are provided.
3a faces the actuator of each switch. Also, a sliding bottle 26 is provided at the base end of the first detection lever 21.
However, a sliding pin 27 is provided at the base of the second detection lever 23, and each sliding pin 26 and 27 is inserted into a cam groove 18 formed in the drive gear 11.

The pair of detection levers 21 and 23 are about to rotate in the biasing direction of the spring 25, but when the sliding bin 26 or 27 is restrained by the cam groove 18 formed in the drive gear 11, each detection lever 21 and 23 are driven in a direction opposing the biasing force of the spring 25.

As shown in FIG.
4 and is transmitted to the binion 35. This Binion 35
are meshed with teeth on the outer periphery of the drive gear 11. The reduction gear 32 is connected to the capstan 3 by a switching plate 36.
It is switched and driven to mesh with and separate from gear 31a, which is integrated with gear 1. Only when the motor 14 is loading or unloading a cassette bag, the reduction gear 32 meshes with the gear 31a integrated with the capstan 31, and at this time, the power of the capstan is transmitted from the pinion 35 to the drive gear 11 via each reduction gear. .

Next, the operation will be explained.

Figure 1 (Figure 4) shows the state with the cassette pack ejected, Figure 2 (Figure 5) shows the state in standby, and Figure 3 (Figure 6) shows the state with the cassette pack loaded in the tape drive position. It shows.

When the cassette bag is being ejected in FIG. 1 (FIG. 4), the power of the capstan 31 is transmitted to the drive gear 11 via the pinion 35, and the drive gear 11 is rotating counterclockwise. Therefore, the connecting pin 16 at the tip of the arm lla, which is integrated with the drive gear 11, slides on the G section of the linear trajectory of the guide groove 14a of the drive lever 14, and the drive lever 14 is largely driven counterclockwise. Further, the drive pin 15 at the tip of the drive lever 14 is located within the E section of the arc locus of the guide groove 28 of the guide bracket 2, and the guide bracket 2 has moved forward to the position (A) shown in FIG. As shown in FIG. 1, the drive bottle 15 at the tip of the drive lever 14 pushes the arm 4b of the ejection lever 4, driving the ejection lever 4 clockwise, and the other ejection lever 3 opposes the force of the spring 9. is being driven counterclockwise. At this time, the cassette pack C is pushed out to the left in the figure by the pressing force of the pressing bottles 7 and 8 provided on the ejection levers 3 and 4, and the cassette pack C is at the ejection position.

In this cassette pack ejection state, the first detection lever 21
The sliding pin 26 is restrained by the cam groove 18 of the drive gear 11, the first detection lever 21 is driven counterclockwise, and the switch SW1 is turned on.

Further, the sliding pin 27 of the second detection lever 23 is also restrained by the cam groove 18, and the second detection lever 23 rotates clockwise.
Switch SW2 is also turned on. As shown in FIG. 8, when both switches SWl and SW2 are turned on, the state in which the cassette pack C is ejected is detected.

After the cassette pack C is ejected, the drive gear 11
It is driven clockwise to the position shown in the figure (Fig. 5) and stands by in the state shown in Fig. 2.

During this time, the drive lever 14 is driven clockwise by the connecting pin 16 provided on the arm lla of the drive gear 11. To be more specific, in the rotation trajectory shown in FIGS. 4 to 5, the drive lever 14 rotates clockwise about the shaft 13 because the connecting bottle 16 slides on the G section of the linear trajectory of the guide groove 14a. I am made to do so. Furthermore, by clockwise rotation of the drive lever 14, the drive pin 15 at the tip thereof slides in the E section of the guide groove 2a of the guide bracket 2. Since this portion E is a circular arc locus centered on the shaft 13 of the drive lever 14,
The guide bracket 2 does not move between FIG. 1 (FIG. 4) and FIG. 2 (FIG. 5). However, as the drive lever 14 rotates clockwise, the arm 4b of the ejection lever 4
2, and the elastic force of the spring 9 causes the ejection lever 4 to rotate counterclockwise and the ejection lever 3 to rotate clockwise, and the press bottles 7 and 8 return to the standby position shown in FIG. In the state shown in FIG. 2, the arm 4b of the ejection lever 4 has come off the drive bin 15 and is in contact with the side of the arm lla of the drive gear 11.

As shown in FIG. 5, in this standby state, both the sliding pin 26 of the first detection lever 21 and the sliding pin 27 of the second detection lever 23 are in a free state within the cam groove 18, and one lever 21 and 23 are pulled together by a spring 25.

Therefore, the tips 21a and 23a of each detection lever are the switches S.
Move away from the W1 and SW2 actuators, and both switches will turn OFF. To explain in detail with reference to FIG. 8, in the cassette pack ejection state shown in FIG. 1, both switches were ON. Thereafter, when the drive gear 11 rotates clockwise and the drive lever 14 begins to move clockwise, the cam groove 1
Due to the shape of 8, only one switch SW2 is turned off first.
become. When the standby state shown in FIG. 2 is reached, both switches are turned off. In this way, by detecting the switch, the standby state shown in FIG. 2 can be detected. When this standby state is detected, the cab scan motor is stopped and the system waits for the cassette pack to be inserted.

When the cassette pack C is inserted from the standby state shown in FIG. 2 and detected by a detection means (not shown), the drive gear 11 is further driven clockwise. At this time, the connecting pin 16 at the tip of the arm 11a provided on the drive gear 11 slides on the G section of the linear trajectory of the guide groove 14a, and the drive lever 14 is rotated clockwise. As shown in FIG. 6, in the final stroke, the connecting bottle 16 is in the guide groove 1.
In order to move within 8 parts of the circular arc trajectory of 4a, the drive gear 11
At the end of the rotation, the drive lever 14 is not driven. On the other hand, when the drive lever 14 rotates significantly clockwise, the drive pin 15 at the tip of the drive lever 14 moves into the F section of the linear trajectory of the guide groove 28 of the guide bracket 2, as shown in FIGS. 2 and 3. As a result, the guide bracket 2 is driven to the right and reaches the position fBl in FIG. 7, and the cassette pack C is loaded into the tape drive position as shown in FIG. Then, the sliding pin 27 of the second detection lever 23 is driven clockwise by the cam groove 18, and the switch SW2 is turned ON.One switch SW1 is OFF, and as shown in FIG. It is detected that the pack is loaded.

The ejecting operation of the cassette pack is the reverse of the above, the drive gear 11 is driven counterclockwise, and the cassette bag C is pushed out by the pressing bins 7 and 8, as shown in FIG. Thereafter, the drive gear 11 rotates clockwise to the standby position shown in FIG. In this standby position, the pressure bins 7 and 8 are not moving forward, so they do not provide resistance when inserting the cassette pack.
Only a light resistance force acts on the guide bracket 2 or due to the holding force of a leaf spring or the like provided on the cassette holder.

In the illustrated embodiment, a rotary head type tape player has been described, but it can also be used as a guide device for a fixed head type tape cassette.

〔effect〕

As described above, according to the present invention, since the discharge member for discharging the cassette pack is retracted to the standby position when the cassette pack is inserted, the resistance force when inserting the cassette pack can be extremely reduced. Furthermore, since the cassette bag is pushed out by the ejecting member when ejecting the cassette pack, the ejecting operation is performed reliably.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, and FIGS.
The figure is a plan view showing the cassette loading device in each operating state, FIGS. 4 to 6 are plan views showing the main parts of the loading device in each operating state, and FIG. 7 is a plan view of the loading device shown in FIGS. 1 to 3. FIG. 8 is a side view in the direction of the ■ arrow, and is a time chart showing the switch detection operation. l... Chassis, 2... Guide bracket, 3.4.
... Discharge lever, 7.8... Press bin, 11... Drive gear, 14... Drive lever, 15... Drive bin,
18...Cam groove, 21.23...Detection lever, SW
,. SW2...Detection switch. Figure 4

Claims (1)

[Scope of Claims] 1. A guide member that feeds the cassette pack to the tape drive position, a drive member that moves the guide member backward into the chassis and feeds the cassette pack, and a standby position when the guide member is in the forward position. A cassette loading device 2 for a tape player, characterized in that it is equipped with a pack ejecting member located at a position 1, and a pressing member that drives the pack ejecting member further from the standby position in the pack extrusion direction when ejecting the pack, and a guide member. The cassette loading device for a tape player according to claim 1, wherein the driving member for retracting and the pressing portion for driving the pack ejecting member are the same rotary lever, and this rotary lever is rotatably driven by a motor.