JPS6348646A - Eject mechanism - Google Patents

Abstract

PURPOSE:To improve the operability and to make the constitution simplified and compact by using a power plate, a sheet plate and a support plunger so as to apply electric ejection. CONSTITUTION:In case of the eject command given, a motor drives a drive gear 2, a cam 2 drives the power plate 1 counter clockwise and a pin 1c of the power plate 1 is in contact with a part 4b to be tracted of the shift plate 4. In this case, since the part 4b to be tracted is tapered, a moment driving the shaft plate 4 counter clockwise is caused. However, since the plunger 6 is energized at the ejection, the plunger plate 7 is held at the attracting state. The shift plate 1 is not driven but moved in the left direction while being tracted by the power plate 1. Attended with the movement above, the eject link 5 is turned counter clockwise around the shaft 5b to push the eject plate 11 in the depth (upward in figure). Then a cassette is ejected similarly in the case with a convertional technology.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention provides an ejector ti provided in a tape player.
Regarding A@.

(Prior Art) As an eject mechanism for ejecting a cassette from inside a tape player, the applicant drives an eject plate to rotate a guide arm, and connects a back stopper through the reversing action of a reversing spring interlocked with this guide arm. We have proposed a device that inserts and ejects cassettes by moving them back and forth. (For example, Japanese Patent Application No. 60-218119) FIG. 3 shows an eject mechanism shown as a specific embodiment by the applicant in the previous invention.

In FIG. 3, an ejection plate 12 is provided above the ejection plates 1 to 11 so as to be able to swing in the same direction as the ejection plate 11, and this ejection plate 12 has a tapered engagement portion 13a. An L-shaped engagement hole 13 with a long relief part is bored, and the engagement pins 14 of the ejector plates 1 to 11 are inserted into this engagement hole 13, and the engagement pins 14 and 14 are inserted into the engagement holes 13. A slight clearance 1 is provided between the joint portion 13a, that is, between the eject lever 11 and the ejection plate 12. A rod-shaped first rank member 16 is disposed between the discharge plate 12 and the guide arm 15, and the force of the reversing spring 18 provided between the pax mill collar 17 and the guide arm 15 is transferred to the discharge plate 12. I am telling you. The discharge plate 12 is capable of reciprocating with respect to a guide pin 12a provided on the tape player base, and is also movable around the guide pin 12a. Furthermore,
A lock member 19 for locking the eject plate 11 when the eject operation is completed is provided at the leading end of the cassette in the loading direction. Also, eject plate 1
Return springs 20 and 21 are attached to each of the discharge plate 1 and the discharge plate 12 to bias them toward the front.

In addition, the spring pressure P of the reversing spring 18.

As a result, a moment M in the counterclockwise direction in the figure is applied to the guide arm 15, and a rotational force P1 given by this moment M applies a moment M1 in the clockwise direction in the figure to the ejection plate 12. When the plate 11 is pressed, the engagement pin 14 presses the engagement portion 13a of the discharge plate 12, and a moment M2 is applied to the discharge plate 12 in the clockwise direction in the figure. The relationship of the moment is defined as M2<N11+ ε2 for the roaring column. Among these, the moment M2 in the counterclockwise direction is
The return force P2 of the return spring 21 of the discharge plate 12, the axial center distance ρ in the left-right direction between the shaft 12a of the discharge plate 12 and the engagement pin 14 of the extractor 1 to plate 11, 2, and the engagement portion 13a
It is adjusted by the inclination θ, etc.

In addition, P3 in the figure is the return force of the return spring 20 of the control unit 1 to the plate 11.

In the eject mechanism shown in FIG. 3 having the above configuration, by pushing the eject plate 11 deep, the guide arm 1 is ejected via the eject plate 12 and the link 16.
5 is suppressed and rotates clockwise in the figure. As a result, the reversing spring 18 is compressed and reversed, and after this, the ejection plate 1
2 rotates counterclockwise, and the engagement pin 14 of the eject plate 11 is ejected! The fi 12 moves toward the escape part of the engagement hole 13, and the discharge plate 12 and the output plates 1 to 11 are disengaged from each other. Moreover, the back stopper 17 and the guide arm 15 return to the front due to the biasing force of the reversal spring 18 after the reversal, and accordingly, the discharge plate 12 moves to the front via the link member 16. On the other hand, the pushed eject plate 11 is air-locked by the locking member 19 at its most pushed position.

In this way, in the configuration shown in FIG. 3, the guide arm 15 can be returned to the insertion position in front while the eject plate 11 is stopped during ejection 1. Therefore, when the cassette is installed, the eject plate 11 can be moved to the front position. When the eject plate 11 is not installed, the eject plate 11 can be moved to the back, and as a result, the presence or absence of a cassette can be determined based on the position of the eject plate 11, and the eject plate 11 cannot be moved beyond a certain operating stroke. This has the advantage that it is possible to prevent malfunctions by providing this.

However, the tampering mechanism with the above configuration is
Since the ejecting operation is performed by pressing the ejector 1 to plate 11 by manual lever operation, the operability is low, especially the logic type in which all operations are automatically performed by a motor controlled by a microcomputer. This method has the problem that it cannot be used for tape players.

On the other hand, for example, as shown in FIG. As shown in FIG. 4(B), the eject plate 11 may be directly driven by the suction plunger 34. There is a
Further, in the latter case, there are problems such as the adsorption plansite 34 becoming larger.

In addition, in a logic type tape player, since Meishin's operations are performed by motor drive, if a configuration is adopted in which the eject plate is directly driven by a dedicated motor plunger as described above, the entire tape player will The number of parts including the motor increases, leading to problems such as larger and more complex configurations.

(Problems to be Solved by the Invention) The present invention has been devised to solve the above-mentioned drawbacks of the prior art, and its purpose is to perform the ejection operation electrically rather than by operating a lever. It is an object of the present invention to provide a front eject groove which improves operability and contributes to miniaturization and simplification of the structure.

[Configuration 1 of the Invention (Means for Solving Problems) The ejection mechanism according to the present invention includes a power plate rotated by a motor, a shift plate 1 to a holding plunger, and is shifted by a holding plunger V during an eject operation. Lock the plate and use the traction force of the power plate to move the shift plate linearly to eject the eject plate; otherwise, leave the shift plate unlocked and rotate the shift plate using the traction force of the power plate. Make the eject operation! This feature is characterized in that it is configured in such a way that it does not occur.

(Function) With the above-described configuration, the present invention can perform the ejection operation electrically via the power plate and shift l-plate by motor drive, thereby improving operability. In addition, by unlocking shift plays 1 to 1, the interlock between the power plate and the eject plate is cut off at times other than the eject operation, so the power plate can perform another drive operation, and the drive system It can contribute to making the tape player A7 smaller and simpler.

(Embodiment) Hereinafter, an embodiment of the tampering mechanism according to the present invention will be specifically described with reference to the drawings. Note that the same parts as those in the prior art shown in FIG. 4 are designated by the same reference numerals, and the description thereof will be omitted.

*Configuration of Example In Fig. 1, the power plate 1 rotates around the axis 1a! 1I71 is freely provided, and the cam 3 of the drive gear 2, which is rotated by a drive motor (not shown), is driven by the cam 3 of the drive gear 2, which is rotated by a drive motor (not shown).
It seems to rotate in the direction. This power plate 1
At the end opposite to the roller 1b, there is a pin 1 as a traction part.
C is provided, and inserted into the L7 hole a provided at one end of the shift plays 1 to 4, and its tapered towed portion 4b
With this configuration, when the power plate 1 rotates clockwise in the figure, the shifter 1 to plate 4 are pulled to the left in the figure. In addition, 1d in the figure is
The roller 1b presses the power plate 1 onto the cam 3,
Further, it is a spring that biases the pin 1C in a direction in which the pin 1C is separated from the towed portion 4b (clockwise in the figure).

The end of the shift plate 4 opposite to the L-shaped hole 4a is rotatably engaged with one end of the L-shaped eject link 5 by a connecting pin 5a, so that the shift plate 4 is rotated about the connecting pin 5a. It is said to be swingable. The eject link 5 is rotatably provided around a shaft 5b in the center thereof, and the end opposite to the connecting pin 5a with the shift plate 4 engages with the protrusion 11a of the eject plate 11. An engagement pin 5C is provided for moving the plate 11 in the ejecting direction.

In addition, at the tip of the shift plate 4 on the L-shaped hole 4a side,
A locked portion 4C is provided, and when the holding plunger 6 is energized, the lock pin 7 of the plunger plate 7 that is attracted
It is designed to be locked to a. The plunger plate 7 is rotatably provided around m7b, and is biased in the suction direction to the holding plunger 6 by a suction valley spring 7C. Note that the hold 1 lunge τ groove is energized during the eject operation, and is not energized at other times.

Functions of this embodiment The functions of this embodiment having the above structure are as follows.

First, FIG. 1 shows a state in which loading is completed, and the roller 1b of the power plate 1 is at the minimum diameter part of the cam 3 on the drive gear 2, so the power plate 1 is at the most clockwise rotated position. .

At this time, the plunger plate 7 is in contact with the holding plunger t6 due to the urging force of the adsorption spring 7G, and the pin 1C of the power plate 1 is connected to the shift plate 4 when the power plate 1 starts rotating. It is in a standby position where it can engage with the towed portion 4b.

Then, when issuing an eject command, the motor drives the
The drive gear 2 rotates, and the power plate 1 starts rotating counterclockwise from the position shown in FIG. 1 by its cam 3.

By this operation, the pins 1G of the power plays 1 to 1 come into contact with the towed portions 4b of the shift plays i to 4. In this place a,
Since the towed portion 4b is tapered, a moment that rotates the shift plate 4 counterclockwise is generated.

However, at the time of ejection, since the plunger r6 is energized, the plunger plate 7 is held in the unattractive state shown in FIG. 1, and the shift plate 4 is locked by the locking pin 7a so that it cannot be rotated. Therefore, shift 1 to play 1-1 are pulled by power plays 1 to 1 and move to the left in the figure without rotating. Along with this movement, the link 5 to the ejector 1 rotates counterclockwise around the shaft 5b in the <-H direction, and pushes the ejector plays I to 11 to the back (upper side in the figure). After this, the guide arm 15 rotates via the ejection plate 14 and the link member 16, the back stopper moves toward you through the reversal action of the reversal spring, and the cassette is ejected. .

After the eject operation, the ejector 1-plate 11 is locked by the locking member.

Therefore, according to this embodiment, the ejecting operation can be performed electrically using the driving force of the motor, so that the operability is improved.

Furthermore, when the holding plunger 6 is de-energized, the shift plate 4 is not locked, so as shown in FIG. It rotates counterclockwise around the center, and no eject operation is performed. Therefore, when the holding plunger 6 is not energized, that is, when the ejection operation is not performed, the power plate 1 is moved using the same drive system.
can be used for other drive movements, for example for advancing the head plate. As a result, the drive system can be simplified, contributing to miniaturization of the tape player as a whole.

Other Examples It should be noted that the present invention is not limited to the above embodiments, and the shape of each member can be selected as appropriate. For example, the means for engaging the shift plate and the eject plate can be changed as appropriate. I'll go.

[Effects of the Invention] As explained above, according to the present invention, the power plate,
The simple structure consisting of a shift plate and a holding plunger allows for electrical ejection operation, which improves operability compared to conventional lever-type mechanism. Also, when the holding plunger is de-energized, the power plate does not operate. Since the IPi can be used for another driving operation, it is possible to provide an excellent ejector IPi that can contribute to downsizing and simplifying the overall configuration of the tape player.

[Brief explanation of the drawing]

FIGS. 1 and 2 are plan views showing an embodiment of the separate eject base according to the present invention, in which FIG. 1 shows a loading completed state, FIG. 2 shows a power plate operating state other than ejecting operation, and FIG. FIG. 7A4 is a plan view showing a concave eject surface of a conventional [ ] thick type. 1...Power plate, 1a...Shaft, 1b...[
1-ra, 1C...pin, 1d...spring, 2-
... Drive gear, 3... Cam, 4... Shift plate, 4a... L-shaped hole, 4b... Towed part, 4C...
Locked part, 5... Eject link, 5a... Connection pin, 5b... Shaft, 5C... Engagement pin, 6...
Holding plunger, 7... Plunger plate, 7a.
...Lock pin, 7b...Shaft, 7G...Adsorption spring, 11...Eject lever, 12...Ejection plate, 13...Engagement hole, 13a...Engagement part, 14...・・・
Engagement pin, 15... Guide arm, 16... Link member, 17... Back stopper, 18... Reversal spring, 19... Lock member 20. 21... Return spring. Figure 3 Figure 4 (A) Figure 4 (B)

Claims (1)

[Scope of Claims] a. An eject plate that performs an eject operation and has an engaging member thereon. b. An ejection plate that has an engaging portion that engages with the engaging member of the eject plate and is capable of reciprocating and swinging with respect to the eject plate. c. Back stopper that supports the cassette. d. Rotatable guide arm. e. Reversing spring installed between the back stopper and the guide arm. f. A link member disposed between the discharge plate and the guide arm. In the ejection mechanism consisting of each of the members a to f above, g. a power plate driven by a motor to rotate and pull the shift plate; h. By being pulled by the power plate, the shift plate moves linearly when locked and causes the eject plate to eject, but when unlocked it rotates and does not operate the eject plate. i. A retaining plunger that locks the shift plate in a linearly movable but non-rotatable position. An eject mechanism characterized by comprising each of the members g to i above.