JPH077548B2 - Record carrier loading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention moves two guide post units in the circumferential direction and performs catching (positioning) of both units at different positions to load a record carrier. The present invention relates to a loading device, and more particularly to a means for reducing the load on a drive source for loading.

(Prior Art) (FIGS. 10 and 11) FIG. 10 shows a conventional record carrier loading device of this type, in which 51 is a head cylinder, 52 is a first loading ring, and 53 is a first guide. Post units, 53a and 53b are provided on the first guide post unit, and are movable tape guides that move together with the unit, 54 is a second loading ring, 55 is a second guide post unit, and 55a and 55b are second guide post units. A movable tape guide that is provided and moves together with the unit, 56 is a loading motor, and 56a
Is a gear fixed to the drive shaft of the loading motor 56, 57
Is a gear that meshes with the gear 56a and the first loading ring 52, 58 is a gear that meshes with the gear 57 and the second loading ring 54, 59a and 59b are catchers for the first loading unit 53 and the second loading unit 55, and T is a record. It is a magnetic tape as a carrier.

In the above configuration, when the loading motor 56 rotates, the first loading ring 52 rotates via the gears 45a and 57, and the second loading ring 54 is decelerated by the gears 57 and 58 to make the second loading ring 54 smaller than the first loading ring 52. Rotate in the same direction at low speed. At the end of loading, the first and second guide post units 53 and 55 are simultaneously caught by the catchers 59a and 59b, respectively. Catching is each loading ring 52,54
This is performed by pressing the guide post units 53 and 55 against the catchers 59a and 59b by the torque.

(Problems to be Solved by the Invention) The above-described loading device is
Since the two guide post units 53, 55 are loaded at the same time, the load at the end of loading becomes excessive,
It is necessary to use a large and expensive loading motor 56 as a drive source. FIG. 11 shows a load curve of the loading motor in the apparatus shown in FIG. 10, in which the load becomes maximum at the end of loading and becomes an excessive value. Therefore, in the conventional loading device, the specifications of the reading motor are determined by the load at the end of loading.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a loading device that eliminates the above-mentioned drawbacks of the conventional record carrier loading device, reduces the loading load, and can reduce the size and weight of a driving source such as a loading motor.

(Means for Solving the Problems) In order to achieve the above object, a record carrier loading device according to the present invention comprises first and second guide post units provided with guides for guiding the record carrier, and the first and second guide post units. A record carrier loading device having first and second guide post units that are moved in the circumferential direction to position the units at different positions, respectively. A moving member that moves the unit, a connecting member that is detachably connected to the moving member, and a releasing member that is provided near the second positioning member and that releases the connection between the connecting member and the moving member. A pressing member rotatably provided in the vicinity of at least one of the first and second positioning members, and a rotating operation of the pressing member. An elastic member for urging the pressing member to press the guide post unit against the positioning member, the second guide post unit is moved by a connecting member connected to the moving member, After reaching the vicinity of the second positioning member, the connection of the connecting member to the moving member is released by the release member to restrict the movement of the moving member, and the connection of the connecting member to the moving member is released. When only the first guide post unit is moved by the moving member and the guide post unit is positioned by the positioning member provided with the pressing member in the vicinity thereof, the guide post unit is pressed by the pressing member. The pressing force is stored by rotating the elastic member against the urging force of the elastic member. Configured to guide post as a feature to be positioned relative to the positioning member.

(Operation) According to the record carrier loading device of the present invention, the catching timings of the first and second guide post units are different from each other based on the above-mentioned configuration, so that the load at the time of catching the driving source is dispersed and accumulated. Since the elastic force of the elastic member is also used for catching, the load on the drive source is reduced in combination with both.

(Embodiment) (FIGS. 1 to 9) The construction of the embodiment of the record carrier loading device of the present invention and the order of its operation will be described in detail below with reference to FIGS. 1 to 9.

(Structure of the embodiment of the record carrier loading device of the present invention) (FIGS. 1 to 9) FIGS. 1 to 5 show an embodiment of the record carrier loading device of the present invention, the first being Loaded state, Fig. 2,
FIG. 3 shows a state in the middle of loading, FIG. 4 shows a state immediately before the end of loading, and FIG. 5 shows a state at the end of loading. In these figures, 1 is a loading ring, 6 is a driven ring, 10 is a first guide post unit, 20 is a second guide post unit, and 30 is a first guide post unit.
Reference numeral 40 denotes a first catching structure for catching the guide post unit, and 40 denotes a second catching structure for catching the second guide post unit.

In the hole 11 formed in the first guide post unit 10,
Base attached to loading ring 1 (not shown)
The protrusion 2 formed on the
10 is rotatable in the rotation direction of the first loading ring 1 (direction of arrow A in FIG. 1) while maintaining a fixed relationship with the ring 1, but in the front-back direction of the paper orthogonal to this rotation direction. ,
It is movable with respect to the loading ring 1 by means to be described later. The first guide post unit 10 is provided with guides 12 and 13 for guiding a record carrier (for example, a magnetic tape), a cam 14, and the like.

The second guide post unit 20 has an arm 21 rotatably mounted on a base (not shown) attached to the driven ring 6 about a shaft 22, and the arm 21 (see FIG. 6) records data. Guides 23 and 24 for guiding the carrier are erected. The large diameter portion 24a of the guide 24 is a guide portion of the record carrier, and the small diameter portion 24b at the tip acts as a contact portion for a catcher 43 described later. The arm 21 has a roller on its lower surface.
26 is fixed, and a hook 27 (see FIG. 7) is attached by fitting its circular hole 27a to the shaft 22. The spring 28 (the spring 28 is shown only in FIGS. 2 and 3) is fixed at its both ends to the side surface 21a of the arm 21 and the spring hooking portion 27b of the hook 27, and is wound around the shaft 22. The arm 21 in the direction of B in FIG. The hook 27 has elasticity and has, for example, the shape shown in FIG. 7 (FIG. 7A is an enlarged plan view, and FIG. 7B is a partial side view of FIG. 7A). 27c is a rectangular hole,
The contact piece 27d is bent and raised at one end thereof. Rectangular hole 27c
The protrusion 3 bent from the loading ring 1 engages with the. That is, when the loading ring 1 is rotated, the second guide post unit 20 is operated by means described later.
Until the rectangular hole 27c and the projection 3 are engaged, the second guide post unit 20 and the driven ring 6 are entrained in the loading ring 1 and rotated until is caught.

The first catching structure 30 includes a base 31 arranged in a fixed relationship with the main body of the apparatus, and a bent and raised portion 31 at one end of the base 31.
A catching portion (not shown) is formed at the bottom of a. Further, a shaft 32 is erected on the base 31, the shaft 32 supports a crank lever 33, and a spring 34 is hooked between a recess 33a at one end of the crank lever 33 and a recess 31b at a protruding portion of the base 31. ,
A pin 33b is planted at the other end of the crank lever 33. Although not shown in the figure, the base 31 has its guides 12, 1 when catching the first guide post unit 10.
A cam that regulates the height and inclination of 3 is provided.

The second catching structure 40 is arranged in a fixed relationship with the main body of the apparatus, and is mainly composed of a cam 41, a catching pressing member 42, and a catcher 43 (see FIG. 3). The cam surfaces 41a and 41b of the cam 41 are provided on the second guide post unit 20.
The roller 26 is guided at the time of rotation. The pressing member 42 is rotatable about a shaft 44 fixed to the main body of the apparatus, and its rotation is restricted by a long groove 42a and a pin 45 engaged with the long groove 42a. The spring 46 includes a recess 41c at the tip of the cam 41 and a pressing member 42.
Is hung between the hole 42b provided in the right side protruding portion of the. The catcher 43 contacts the small diameter portion 24b of the guide 24 of the second guide post unit 20 to catch the same unit 20.

(Operation of the embodiment of the record carrier loading device of the present invention) In the unload state shown in FIG. 1, when the loading motor (not shown) is switched on to load the record carrier, the rotation of the motor is known. Is transmitted to the gear portion 1a of the loading ring 1 by means such as a gear train, and the ring 1 rotates in the direction of arrow A together with the first guide post unit 10. At this time, loading ring 1
The second guide post unit 20 and the driven ring 6 are also carried by the loading ring 1 by the engagement of the protrusion 3 bent and raised with the rectangular hole 27c of the hook 27 in the second guide post unit 20, and the A direction Turn to.

When the above-mentioned rotation progresses and the roller 26 attached to the arm 21 of the second guide post unit 20 reaches the position of the cam 41 of the second catching structure 40 (see FIG. 2),
26 moves along the cam surface 41a so that the arm 21 has a spring 28.
It rotates counterclockwise around the shaft 22 against the urging force of. As a result, the catching pressing member 42 rotates clockwise about the shaft 44 and stores the spring 46 (see FIG. 3).

When the loading ring 1 further rotates, the second
The upper inclined portion 27e (see FIG. 8 (A)) of the tip of the hook 27 in the guide post unit 20 has a cam 41 due to its elasticity.
Since it ascends along the downwardly inclined portion 41d of the load and rides on the flat portion 41e (see FIG. 8B), the engagement between the hook 27 and the protrusion 3 of the loading ring 1 is released, and only the loading ring 1 is indicated by the arrow. Continue to rotate in direction A (Fig. 4).
On the other hand, the roller 26 moves after the cam surface 4a along the cam surface 41a.
Move along 1d. Therefore, the pressing member 42 generates a pressing force on the arm 21 in the K direction in FIG. 4 by the elastic force of the stored spring 46, and the component force in the L direction is the tip small diameter portion of the guide 24 in the second guide post unit 20. Press 24b against catcher 43. Since this pressing force is applied to the torque of the loading motor, the load on the motor can be reduced.

The loading ring 1 continues to rotate (fourth
(See FIGS. 5 and 5), the first guide post unit 10 is the first
When the position of the catching structure 30 is reached, the cam surface 14a of the cam 14 in the first guide post unit 10 presses the pin 33b in the first catching structure 30, and the crank lever 33 moves the shaft 3 into the shaft 3.
The spring 34 is rotated clockwise about 2 and the spring 34 is charged (see FIG. 4).

Next, as the loading ring 1 rotates, the cam surface 14b comes into contact with the pin 33b, and the crank lever 33 rotates counterclockwise this time. Therefore, due to the elastic force of the stored spring 34,
A pressing force in the P direction in FIG. 5 is generated against the first loading unit 10, and the tip portion 15 of the unit 10 is caught by the component force in the Q direction at a lower portion of the bent and raised portion 31a in the first catching unit 30. The part (not shown) is pressed. Since this pressing force is applied to the torque of the loading motor, the load on the motor can be reduced in the same manner as described above. Along with this, the position of the first guide post unit 10 in the front-back direction of the paper surface is regulated by the cam mounted on the base 31, and the height and inclination of the guides 12, 13 are used for guiding the record carrier during recording or reproduction. Make it suitable.

As described above, from the rest position in the unload state shown in FIG. 1 to the catching position of the second loading unit 20 shown in FIG. 4 and the first loading unit shown in FIG.
Since the catching timings of the first and second guide post units are different as shown in FIG. 9 by the difference in the circumferential distance of the loading ring 1 to the catching position of 10, the total load of the loading motor is The maximum value of the load can be reduced without changing from the conventional one shown in FIG. Further, since the load on the motor can be reduced by the amount of the pressing force of the springs 34 and 46 that have been stored, the motor as a drive source can be made smaller and lighter in weight. The means for applying a pressing force by the spring at the time of catching may be provided only to one of the catching structures 30 and 40.

At the time of unloading, the loading motor rotates in the opposite direction to the loading, and the loading ring 1 also rotates in the opposite direction. Then, when the protrusion 3 of the loading ring 1 abuts against the abutment piece 27d of the hook 27 and presses it, the hook 27 is moved by the elastic force to move to the eighth position.
Returning to the position shown in FIG. (A), the protrusion 3 is engaged with the rectangular hole 27c of the hook, and the driven ring 6 and the second guide post unit 20 are entrained in the loading ring 1 again and rotated. It returns to the state shown in FIG.

In the above-described embodiment, the first and second guide post units 1 are
0 and 20 are loading ring 1 and driven ring 6, respectively
However, the present invention can also be carried out by mounting both guide post units only on the loading ring 1.

(Effect of the Invention) According to the configuration of the present invention, since the timing of positioning the first and second guide post units with respect to the positioning member is different, the load at the time of positioning with respect to the drive source is dispersed,
The maximum value of load can be reduced.

Further, since the load on the drive source can be reduced by the amount of the stored pressing force, the size of the drive source can be reduced and the weight of the drive source can be reduced.

Further, since the mechanism for accumulating the pressing force is achieved by rotating the pressing member biased by the elastic member by the movement of the guide post unit, the mechanism can be simplified.

[Brief description of drawings]

FIG. 1 is a plan view showing an unloading state of an embodiment of a record carrier loading apparatus of the present invention, FIGS. 2 and 3 are plan views showing a state during loading, and FIGS. 4 and 5 are Similarly, a plan view showing a state immediately before the end of loading and a state at the end of loading, respectively, FIG. 6 is an enlarged side view of an essential part of an example of the second guide post unit in the embodiment of the present invention, and FIG. An enlarged plan view of an example of a hook in the second guide post unit in the embodiment of the present invention, the same figure (B) is a partial side view of the same figure (A), and FIGS. 8 (A) and (B) are the present invention. Of the engagement and disengagement between the loading ring and the second guide post unit in the above embodiment, FIG. 9 is a load curve diagram of the drive source in the embodiment of the present invention, and FIG. 10 is a conventional record carrier loading device. of Rear view, FIG. 11 is a load curve diagram of the driving source of the device of Fig. 10. Explanation of symbols 1: Loading ring, 2, 3: Projection part, 6: Driven ring, 1
0: Second guide post unit, 12, 13: Guide, 14: Cam, 20: Second guide post unit, 21: Arm, 22:
Axis, 23, 24: Guide, 26: Roller, 27: Hook, 28: Spring, 3
0: 1st catching structure, 32: shaft, 33: crank lever,
33b: pin, 34: spring, 40: second catching structure, 41: cam, 42: catching pressing member, 43: catcher, 44:
Axis, 46: Spring.

Claims (1)

[Claims] 1. A first and second guide post unit provided with a guide for guiding a record carrier, and the first and second guide post units are moved in a circumferential direction so that both units are different from each other. A record carrier loading device comprising: first and second positioning members that are respectively positioned at different positions, and a moving member that moves the first guide post unit; and a removable member removably connected to the moving member. A connection member, a release member that is provided near the second positioning member, and releases the connection between the connection member and the moving member, and a connection member that is provided near at least one of the first and second positioning members. A pressing member that is movably provided, and the pressing member that presses the guide post unit against the positioning member by rotating the pressing member. The second guide post unit is moved by a connecting member connected to the moving member, and is connected by the releasing member when reaching the vicinity of the second positioning member. After the connection to the moving member is released and the movement by the moving member is restricted, and the connection of the connecting member to the moving member is released, only the first guide post unit is moved by the moving member, When the guide post unit is positioned on the positioning member provided with the pressing member in the vicinity, the guide post unit rotates the pressing member against the urging force of the elastic member so that the pressing force is increased. Is stored, and the guide post is positioned with respect to the positioning member by the stored pressing force. Over loading apparatus.