JPH0749633Y2 - Operating mechanism of cassette tape recorder / reproducer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an operating mechanism in, for example, a vehicle-mounted cassette tape reproducing machine.

(Prior Art) For example, in a cassette tape player, when a basic operation for switching each mode is performed by on / off control of an adsorption solenoid, a predetermined actuator is generally mounted by sliding it, for example. There is a structure in which a magnetic substance is pressed against an attraction solenoid, and if the attraction solenoid is in an on state, the actuator is attracted and held at that position by the attraction force of the solenoid.

(Problems to be solved by the invention) In order to effectively exert its original attraction force by the above-mentioned attraction solenoid, the magnetic body is surely pushed against the attraction solenoid by the above-mentioned actuator sliding operation. Attaching is an essential condition. And
For that purpose, it is necessary to sufficiently enhance the accuracy of relation between the mounting position of the suction solenoid and the movement stroke amount of the actuator with respect to the mounting position. Therefore, in the actual assembling work, it is the actual situation that the attaching position of the suction solenoid is adjusted several times in relation to the movement stroke of the actuator, and the workability in assembling this kind of actuating mechanism is become worse. This becomes more remarkable when a plurality of adsorption solenoids and magnetic bodies are used.

(Means for Solving the Problems) In order to solve the above problems, the operating mechanism of the cassette tape recording / reproducing apparatus of the present invention is configured as follows.

That is, the cassette tape is structured such that the actuator is slid by the rotation of the bell crank which is interlocked with the forward movement of the power plate, and the magnetic substance attached to the actuator is pressed against the attraction solenoid provided at a predetermined stationary portion. Is a mechanism for operating a recording / reproducing apparatus, in which a spring member that is elastically deformable by receiving power from the power plate is provided between the power plate and the bell crank, and the forward movement of the power plate is performed. It is set to slightly overstroke.

(Operation) In the above configuration, when the power plate 2 moves forward, the bell crank 6 is given a turning force by the reaction force caused by the elastic deformation of the spring member 8. This causes the magnetic body 17 of the actuator 10 to
Or it is strongly pressed against 21, and the suction solenoid
The adhesion of the magnetic body 17 to 20 or 21 can be maintained.

(Embodiment) An embodiment of the present invention will be specifically described below with reference to the drawings.

FIG. 1 is a plan view showing the operation control mechanism of the on-vehicle cassette tape player, FIG. 2 is a cross section taken along line II-II of FIG. 1, and FIG. 1 is a cross section taken along line III-III of FIG. In FIG. 3, on one side (upper side in FIG. 1, left side in FIG. 2) of the chassis 1, an operating pin 5 having a power plate 2 fixed to a part thereof, and a guide groove 4 of the chassis 1 with which the operating pin 5 is engaged.
(See FIG. 2), it is assembled so that it can move forward from the state shown in FIG. 1 to the left. Further, one end of the return spring 3 is hooked on the projection 2b formed at the forward end of the power plate 2, and the power plate 2 receives the elastic force of the return spring 3 and is always shown in FIG. It receives elastic force in the direction of being pulled back to the retracted position shown. Then, the power plate 2 receives a power from a motor (not shown) or the like based on, for example, a play operation of the cassette tape player, and resists the elasticity of the return spring 3 to move to the left from the state shown in FIG. It starts.

A bell crank 6 is rotatably mounted on the lower surface of the chassis 1 with a shaft 7 fixed to the chassis 1 as a rotation axis. Notch at one end of this bell crank 6
6a is formed, and the other end is integrally formed with an engaging projection 6b that projects toward the lower surface thereof. An operating pin 5 fixed to a part of the power plate 2 engages in a notch portion 6a formed at one end of the bell crank 6 in a state with play in the operating direction of the power plate 2. ing.

A spring member 8 using a torsion coil spring is mounted inside the bell crank 6 while being wound around the outer circumference of the rotary shaft 7 of the bell crank 6. One end 8a of the spring member 8 has an annular groove formed on the outer circumference of the operating pin 5 of the power plate 2.
5a (see FIGS. 1 and 2), and the other end
8b is in contact with the inner side surface of the bell crank 6. Therefore, the forward movement of the power plate 2 is transmitted from the operation pin 5 to the bell crank 6 through the spring member 8.

A reel support plate 9 is fixed to the lower surface of the chassis 1, and an actuator 10 is mounted on the upper surface of the support plate 9 so as to be slidable downward from the state shown in FIG. The slide of the actuator 10 is achieved by engaging the shaft 7 of the bell crank 6 fixed to the chassis 1 and another guide shaft 13 with the guide shaft 13 in guide holes 12 formed near both ends of the actuator 10, respectively. I'm guiding you. Further, an arm portion 11 extending leftward in FIGS. 1 and 3 is integrally formed in a part of the actuator 10, and the bell 11 is formed in a hole 11a formed near the tip of the arm portion 11. The engaging protrusion 6b of the crank 6 is engaged.

To a part of the chassis 1 adjacent to the actuator 10, a pair of suction solenoids 20 and 21 arranged in series along the sliding direction of the actuator 10 (vertical direction in FIG. 1) are fixed. In addition, a pair of control bell cranks are provided on the lower surface of the actuator 10, that is, between the actuator 10 and the reel support plate 9.
Similarly, 15 and 16 are arranged in series along the sliding direction of the actuator 10. The control bell cranks 15 and 16 are provided with shaft portions 15a and 16a, respectively. The shaft portions 15a and 16a are rotatably supported by the actuator 10.

At one end of each of the control bell cranks 15 and 16 described above, the suction solenoids 20 and 2 are connected by the forward movement of the actuator 10.
A magnetic body 17 capable of individually contacting with 1 is mounted by a mounting shaft 18 so as to be rotatable at a constant rotation angle. Further, in the control bell cranks 15 and 16 described above, at the end portions on the opposite side to the side having the magnetic body 17,
Engagement protrusion 15b and engagement recess 16b that engage with each other in an interlockable manner
Are formed respectively. As a result, the rotations of the control bell cranks 15 and 16 transmit the turning force to each other.

In the operation mechanism of the cassette tape player constructed as described above, the predetermined operation of the cassette tape player causes the power plate 2 to resist the elasticity of the return spring 3 from the state shown in FIG. When the forward movement to the left is started, the bell crank 6 passes through the operating pin 5 of the power plate 2 and the spring member 8 and the shaft 7
It is rotated around. With the rotation of the bell crank 6, the actuator 10 together with the control bell cranks 15 and 16 starts sliding downward from the state shown in FIG. Then, in the state where the actuator 10 has slid a full stroke, the magnetic body 17 of each control bell crank 15, 16 is
As shown in FIG. 4, the suction solenoids 20 and 21 corresponding to each are brought into contact with each other.

At this time, the forward movement of the power plate 2 slightly overstrokes, and the operating pin 5 of the power plate 2 moves above the spring member 8
As shown in FIG. 4, one end 8a of the spring member 8 is strongly pressed to the left in the drawing, and the spring member 8 is elastically bent. As a result, the bell crank 6 receives a reaction force due to the elastic deformation of the spring member 8, and a turning force in a counterclockwise direction is applied with the shaft 7 as a rotation axis. As a result, the actuator 10 receives an operating force sufficient to bring the magnetic body 17 of each control bell crank 15, 16 into close contact with the attraction solenoids 20, 21.

Now, in the state shown in FIG. 4, each suction solenoid is
Assuming that both 20 and 21 are in the ON state, the magnetic substance 17 of each control bell crank 15 and 16 will have its magnetic attraction solenoid 2
The control bell cranks 15 and 16 are locked by the positions 0 and 21. After this, even if the forward operating force on the power plate 2 is released, the actuator 10 is held in the position shown in FIG. 4, and the power plate is placed between the operating pin 5 and the notch 6a of the bell crank 6. In the range of play, the force of the return spring 3 causes it to slightly retract, but it is almost held at the position shown in FIG.

Based on the operating position of the power plate 2 shown in FIG. 4, by operating a head plate (not shown), the cassette tape player is kept in the play mode.
After that, when the attraction solenoids 20 and 21 are both turned off, the elastic force of the return spring 3 acting on the power plate 2 causes the power plate 2 to retreat to the state shown in FIG. At the same time, the actuator 10 also slides to the original position shown in FIG. 1 through the rotation of the bell crank 6.

In the state shown in FIG. 4 above, each suction solenoid 2
If only one of the adsorption solenoids 21, 0, 21 is in the on state, the control bell crank 16
Only the magnetic substance 17 is adsorbed. In this state, when the operating force on the power plate 2 is released as described above, the actuator 10 slides toward the original position together with the power plate 2 as in the case described above.
However, the sliding amount of the actuator 10 at this time is about half the stroke when both the suction solenoids 20 and 21 are turned off (see FIG. 5). Therefore,
The power plate 2 is also held in a retracted state by about a half stroke, and based on the position of the power plate 2,
A head plate (not shown) of the cassette tape player is switched to a slightly advanced state, for example, a cueing state.

Further, as the actuator 10 slides from the state shown in FIG. 4 to the state shown in FIG.
One control bell crank 16 whose magnetic body 17 is adsorbed and held by 21 rotates about its shaft 16a as a fulcrum, and the other control bell crank 15 also interlocks with the rotation of this control bell crank 16. The shaft 15a rotates about the fulcrum. By the movement of the interlocking pin 19 of the control bell crank 15 accompanying this, for example, a fast-forward gear arm (not shown) is switched, and together with the switching of the head plate, the cassette tape player is switched to, for example, the fast-forward mode.

Contrary to the above case, when only the adsorption solenoid 20 is turned on, the control bell cranks 15 and 16 are reversed from the case of FIG. 5 as the actuator 10 slides in the original direction. In this case, the fast-forward gear arm (not shown) is switched in the opposite direction, and the cassette tape player is switched to the rewinding state, for example.

In the above-described embodiment, the case where the two suction solenoids 20 and 21 are used has been described, but it goes without saying that the present invention can be applied to an operation mechanism that uses only a single suction solenoid 20 or 21.

(Effect of the Invention) As described above, according to the present invention, the forward movement of the power plate is slightly overstroked, and the power is transmitted from the power plate to the bell crank through the spring member. The bell crank is reliably rotated by the repulsive force of the spring member, so that the magnetic body can be properly brought into close contact with the attraction solenoid. As a result, even if the relationship between the movement stroke of the magnetic body and the position of the suction solenoid is set to be somewhat rough, mutual adhesion is maintained and, for example, the trouble of adjusting the mounting position of the suction solenoid can be eliminated. .

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is a plan view showing an operating mechanism of an on-vehicle cassette tape recording / reproducing apparatus, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. Is also a sectional view taken along the line III-III in FIG. 1, FIG. 4 is a plan view showing a state in which the power plate and the actuator have advanced, corresponding to FIG. 1, and FIG. 5 shows a switching operation state of the operating mechanism. It is a top view. 2 ... Power plate 6 ... Bell crank 8 ... Spring member 10 ... Actuator 17 ... Magnetic material 20, 21 ... Adsorption solenoid

Claims (1)

[Scope of utility model registration request] 1. An actuator is slid by the rotation of a bell crank which is interlocked with the forward movement of a power plate, and a magnetic body attached to the actuator is pressed against an adsorption solenoid provided at a predetermined stationary portion. An operating mechanism of a cassette tape recording / reproducing device configured, wherein a spring member elastically deformable by receiving power from the power plate is provided between the power plate and the bell crank, and the power plate The operation mechanism of the cassette tape recording / playback machine is characterized in that the forward movement of the is set to slightly overstroke.