JPS61156558A - Loading eject mechanism - Google Patents

Abstract

PURPOSE:To simplify the mechanism, to obtain it at a low cost, to save its space, and to improve the durability and the reliability by constituting said mechanism so that the existing connecting spring provided between connecting members of a back operating part and a driving part is used for holding a back stopper, as well. CONSTITUTION:At the time of a usual mode before starting an eject operation, an eject plate 3, an eject rack plate 4 and an eject arm plate 5 are all in an advance position, and an eject arm 9 and a back stopper 10 are in a retreat position. When an eject support is executed from this state, a motor is inverted, by which a swing gear 1 and an eject gear 2 are rotated, and the eject plate 3 and the eject rack plate 4 are moved backward. As for the eject plate 3, its engagement to the eject gear 2 is detached and it is stopped at a position where a cassette completed its ascent. On the other hand, the eject rack plate 4 moves backward further, therefore, the eject arm plate 5 is also moved backward by an energizing force of a spring 6, and its engaging pin 5a is engaged to a turning and engaging part 9b of the eject arm 9.

Description

[Detailed description of the invention] The present invention will be explained in the following order.

A. Industrial field of application G9 Overview of the invention C0 Conventional technology 1 Problem to be solved by the invention [0 Means for solving the problem F. Example When ejecting is completed Fig. 1 Before ejecting starts Fig. 2 G6 Effects of the Invention A, Industrial Application Field The present invention relates to a mechanism for loading and ejecting a cassette in a tape player using the driving force of a motor.

Summary of the B0 Invention This invention simplifies the mechanism by omitting the spring for holding the pack stopper in the cassette standby position when the cassette eject operation is completed.
This is a loading and ejecting mechanism in which the existing connection spring provided between the connecting member between the back operating section and the driving section also serves to hold the pack stopper.

C1 Prior Art A loading and ejecting mechanism uses the driving force of a reversing motor to drive a gear and a connecting member, and a backing operation section is interlocked with this to perform loading or ejecting of a cassette.

Conventionally, in such a loading and ejecting mechanism that utilizes reverse rotation of a motor, a switch is operated in and out using a connecting member between a back operation section and a drive section. By the way, the switch-on position of the connecting member for performing this switch operation is located at the rear of the holding position, and when ejecting, the switch is turned off during ejection. As a result, in order to absorb this stroke difference and push the back movement section to the standby position, it is necessary to provide a spring to urge the back movement section to the standby position.

On the other hand, the loading and ejecting mechanism uses various connecting members in addition to connecting members for vertical and horizontal movement of the cassette, and a structure is adopted in which several of these members are overlapped and interlocked. However, due to the difference in the action of each connecting member, there are stroke differences and movement time differences, so a spring is provided to absorb these differences and ensure that the members interlock with each other.

D1 Problems to be Solved by the Invention However, the increase in the number of springs as described above is an obstacle to the demand for smaller and simpler tape players, and the load applied to the mechanism by the springs also increases. This also caused a decrease in the durability and reliability of the mechanism.

Furthermore, the increase in the number of parts is a major obstacle to reducing costs, which is also a problem.

In order to solve this problem, for example, it is possible to use the spring that connects the connecting members as it is as a spring to bias the back movement part to the standby position, but this can be done as follows. It was impossible for some reason.

That is, when ejection is completed, the intermittent gear and the connecting member are disengaged at the intermittent portion of the intermittent gear, and the connecting member and the back movement section are released, so that the spring installed between the connecting members is Power will also be separated.

Therefore, the spring that connects the connecting members cannot be used as a spring for holding the pack stopper.
In order to hold the pack stopper in the cassette waiting position, a dedicated spring is required, and it has been impossible to reduce the number of springs.

D1 Problems to be Solved by the Invention However, such an increase in the number of springs is an obstacle to the demand for smaller and simpler tape players, and the load applied to the mechanism by the springs also increases. This also caused a decrease in the durability and reliability of the mechanism. Furthermore, the increase in the number of parts is a major obstacle to reducing costs, which is also a problem.

Means for Solving the E0 Problem The loading and ejecting mechanism of the present invention was proposed in order to solve the above problems. Through the arm and the connecting member that interlocks with it,
The pack stopper is biased in the direction of pressing the pack stopper to the cassette standby position, and b. When the ejection is completed, the power supply is stopped with the spring slightly stretched, so that the biasing force of the stretched spring causes The pack stopper is held in the cassette standby position, and the number of springs can be reduced because the spring can be used for both purposes.

F. Embodiment An embodiment of the loading and ejecting mechanism according to the present invention as described above will be explained in detail with reference to the drawings.

Figure 1 shows the configuration of the eject side. The swing gear 1 is connected to a motor via a loading side gear, which will be described later, and swings when the motor reverses, meshing with an eject gear 2 having an intermittent portion, and reversing the same gear. . Eject gear 2 is eject plate 3
It also engages with the eject rack plate 4 superimposed thereon, causing both to move backward. As the eject plate 3 retreats, the cassette is raised to the eject position by a structure not shown, and after the cassette is raised, the eject plate 3 and the eject gear 2 are disengaged from each other. It has become.

Further, an eject arm plate 5 is superimposed on the upper part of the eject rack plate 4. At the rear of the eject rack plate 4, there is a rear bent portion 4a for engaging and pressing the eject arm plate 5.
A spring 6 is provided between both plates 4 and 5.
are constructed and biased in the direction of overlapping each other, and this biasing force maintains the meshing between the eject rack plate 4 and the eject gear 2. Also,
The eject arm plate 5 and the eject rack plate 1-4 are interlocked with a switch operation link 7, and when the eject arm plate 5 advances to a predetermined position, a switch 8 is inputted via the switch operation link 7, and the motor is activated. rotates, the eject rack plate 4 holds the input of the switch 8, and the plate 4
When the switch 8 is moved back from a predetermined position, the switch 8 is stopped and the rotation of the motor is stopped.

Furthermore, the upper part of the eject arm plate 5 has a shaft 9C.
Eject arm 9 rotates around to perform back movement.
are interlocked at their proximal ends. The base end of the eject arm 9 is provided with an engagement hole consisting of a linear relief portion 9a and a rotational engagement portion 9b, into which an engagement pin 5a provided on the eject arm plate 5 is inserted. . Then, until the eject arm plate 5, which moves together with the eject rack plate 4, retreats to a certain position, the engagement pin 5a of the plate 5 retreats over the linear relief part 9a of the eject arm 7, and then the engagement When the bin 5a engages with the rotating engagement portion 9b, the eject arm 9 rotates in the eject direction, which is counterclockwise in the figure, so that the pack stopper 10 pushes out the cassette.

Furthermore, when ejecting is completed, the power supply is stopped when the eject rack plate 4 retreats to a position where the spring 6 is slightly extended.
The eject arm plate 5 is urged in the backward direction by the urging force of the spring 6, and as a result, the eject arm 9 is pressed in the eject direction, and the pack stopper 1
0, the cassette standby is pressed into position.

The operation of this embodiment having the above configuration is as follows. First, in normal mode before the eject operation starts,
As shown in FIG. 2, the eject plate 3, the eject rack plate 4, and the eject arm plate 5 are all in the forward position, and the eject arm 9 and the pack stopper 10 are in the retracted position.

Therefore, since the eject arm plate 5 is in the forward position, the switch 8 is held in the input state via the switch operation link 7. When eject support is performed from this state, the motor reverses, and as a result,
Swing gear 1 and eject side V2 rotate, and eject plate 3 and eject rack plate 4 move backward.

Then, the movement of the eject plate 3 causes the cassette to rise to the eject position. On the other hand, the eject arm plate 5 moves together with the eject rack plate 4 as the eject rack plate 4 moves due to the biasing force of the swivel ring 6 installed between the eject rack plate 4 and the eject rack plate 4. At this time, the engagement pin 5a of the eject arm plate 5 retreats on the linear relief portion 9a of the eject arm 9, so 1. At this point, the eject arm is still
The rotational movement of 9 is not performed.

Thereafter, the eject plate 3 disengages from the eject gear 2 and stops at the position where the cassette has completed its ascent. On the other hand, since the eject rack plate 4 is moved further backward, the eject arm plate 5 also has a spring 6.
The engagement pin 5a engages with the rotating engagement portion 9b of the eject arm 9. As a result, the eject arm 9 rotates and the pack stopper 10 begins to move forward. When the pack stopper 10 reaches the standby position, it is stopped by the locking portion, and since it cannot move forward any further, the eject arm plate 5 is also stopped via the eject arm 9. At this time, since the eject rack plate 4 is still pressing the switch operation link 7, the eject rack plate 4 roughly retreats slightly until this pressing is released. When the switch link 7 is released from the eject rack plate 4, the switch link 7
rotates, switch 8 turns off, and the motor stops rotating. After the eject arm plate 5 stops, the eject rack plate 4 moves back slightly, causing the spring 6 to
is stretched. The eject arm plate 5 is urged rearward by the urging force of the spring 6, and the pack stopper 10 and the cassette holder are urged into position via the eject arm 9.

In this way, in the present invention, since the dedicated spring for holding the pack stopper that has been used in the past is omitted, the number of parts is reduced, and the load corresponding to one spring is also reduced. Therefore, it is possible to reduce costs and save space, and further, by reducing the load, it is possible to improve the durability and reliability of the mechanism.

It should be noted that the present invention is not limited to the above-described embodiment, and for example, the mounting position of the spring is not limited to the position between the eject arm plate and the eject rack pre=1-.

G0 Effects of the Invention As described above, according to the present invention, the existing connection spring provided between the connecting member between the back movement section and the drive section is also used to hold the pack stopper, thereby making it possible to hold the cassette. By omitting the spring to hold the pack stopper in position, the mechanism is simplified, and the load of one spring is reduced, resulting in low cost, space saving, and durability and reliability. It is possible to provide an excellent 0-ding eject mechanism.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing one embodiment of the loading eject mechanism according to the present invention when ejection is completed, and FIG. 2 is a plan view showing the same embodiment as FIG. 1 before ejection starts. 1... Swing gear, 2... Eject gear, 3...
... Eject plate, 4... Eject rack plate, 5... Eject arm plate, 6...
Spring, 7...Switch operation link, 8...Switch, 9...Eject arm, 1o...Pack stopper. First agony

Claims (2)

[Claims] (1) The driving force of the motor drives the pack operating unit consisting of a pack stopper and eject arm through gears and various connecting members to load or eject a cassette, and connect the connecting members to interlock each other. In the case where a spring is installed between the members, a. The pack stopper is moved to the cassette waiting position via the eject arm and the connecting member that interlocks with the eject arm by the urging force generated when the spring installed between the connecting members is stretched. (b) When the ejection is completed, the loading and ejecting mechanism is configured such that the power supply is stopped with the spring slightly stretched. (2) The loading and ejecting mechanism according to claim 1, wherein the spring is installed between a connecting member that interlocks with the eject arm and a connecting member that has a rack that meshes with the drive gear.