JPH04337562A - Cartridge ejecting device - Google Patents

Abstract

PURPOSE:To make the ejecting operation and the ejecting amount of a cartridge sure and to make the electing force of the cartridge constant independently of the position of the cartridge. CONSTITUTION:A slider 39 for electing the cartridge is provided, a twisting coil spring 42 having a fixed coil part 45 and a mobile coil part 46 is used as the energizing means of the slider 39, the both arm parts of the mobile coil part are a chevron-like projecting shape in the direction of inserting the cartridge and the lengths of the both arm parts are almost equal.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cartridge ejecting device that ejects a cartridge by pushing out the cartridge by rotating a trigger lever or a shutter lever.

0002

2. Description of the Related Art Conventionally, cartridge ejecting devices have adopted a method of pushing out a cartridge by using a rotational movement of a trigger lever or a shutter lever in order to apply force for ejecting the cartridge. 6 to 9 show a conventional cartridge ejection device. FIG. 6 is an exploded perspective view, FIG. 7 is a perspective view of main parts, FIG. 8 is a side view of main parts, and FIG. A plan view of the main parts is shown. In FIGS. 6 to 9,
1 is a support board, 2 is a bottom plate, 3 is a side plate, 4 is a back plate, 5 is a driver, 6 is a bottom plate, 7 is a side plate, 8 is a pin, 9 is a long hole, 1
0 and 11 are spring hanging parts, 12 is a tension spring, 13 is a trigger lever, 14 is a cylindrical part, 15 is an engaging protrusion, 16 is a cam part, 17 is a pin, 18 is a spring, 19 is a retaining ring, and 20 is a A locking groove, 21 is a trigger part, 22 is a side wall, 23 is a holder, 24 is an upper and lower guide pin, 25 is a front and rear guide pin, 26
27 is a guide shaft, 27 is a spring hook, 28 is a fan-shaped opening, 29 is a shutter lever, 30 is a shutter pin, 31 is a spring hook, 32 is a spring, 33 is a cartridge, 34 is an auto shutter, 35 is a shutter operation notch recess, 36 3 is a guide groove, 37 is a groove, and the support substrate 1 has a side plate 3 and a back plate 4 connected to both sides and rear side of the bottom plate 2, respectively. Pins 8 are provided on the front side and in the center of the bottom plate 2 of the support board 1, located inside the side plate 3, and protrude vertically. A hole 9 is engaged so as to be slidable back and forth. A spring hanging portion 10 is provided in a protruding manner on the bottom plate 6 of the driving body 5. The bottom plate 2 of the support substrate 1 includes
A spring hanging portion 11 is provided in a protruding manner. A driving body 5 is urged forward by the elasticity of a tension spring 12 in the spring hanging part 10 and the spring hanging part 11. The trigger lever 13 has a cylindrical portion 14 formed at its intermediate portion, an engaging protrusion 15 at its tip, and a fan-shaped cam portion 16 at its front end. A pin 17 is provided protrudingly from the bottom plate 2 of the support substrate 1, a cylindrical portion 14 of a trigger lever 13 is rotatably fitted onto this pin 17, and a spring 18 is fitted into an upwardly protruding portion of the pin 17. , the retaining ring 19 is inserted into the retaining groove 20 of the pin 17 from above the spring.
The trigger lever 13 is rotatably connected to the pin 17, and a spring 18 is attached. A trigger portion 21 is provided at the rear of the bottom plate 6 of the driver 5 to project downward. The cam part 16 of the trigger lever 13 is inserted under the bottom plate 6 of the driver 5, one end of the spring 18 is engaged with the inside of the side plate 3 of the support board 1, and the other end of the spring 18 is engaged with the bottom plate 6 of the trigger lever 13. The trigger lever 13 is engaged with the mating protrusion 15 and urged counterclockwise by the elasticity of the spring 18, and the side wall 22 of the trigger lever 13 comes into contact with the trigger part 21 of the driver 5 to restrict its rotation. The cam portion 16 of the trigger lever 13 is locked to the front end of the trigger portion 21, and forward movement of the driver 5 is restricted. Then, when the trigger lever 13 rotates clockwise against the elasticity of the spring 18 and the cam portion 16 separates from the trigger portion 21, the driver 5 moves forward due to the elasticity of the tension spring 12. . The cartridge holder 23 is formed into a rectangular cylindrical shape, with a lower plate cut out at the center, and has upper and lower guide pins 24 at the front and back of both sides, and a front and rear guide pin 25 at the center projecting laterally. A guide shaft 26, a spring hook 27, and a fan-shaped opening 28 are provided on the upper surface of the holder 23, and a shutter lever 29 is rotatably fitted to the guide shaft 26. The shutter lever 29 has a downwardly protruding shutter pin 30 at its pivoting tip, and a spring hook 31 protrudes from its side surface. The shutter lever 29 is biased counterclockwise by a spring 32 engaged across the spring hook 31 and the spring hook 27 of the holder 23, and when the cartridge 33 is inserted into the holder 23, the side surface of the auto shutter 34 of the cartridge 33 is pushed. The position of the shutter pin 30 is regulated so that it comes into contact with the shutter pin 30 (see FIG. 9). Further, the radius of rotation is such that the shutter pin 30 is located at a position where it engages with the shutter operation notch recess 35 of the cartridge 33 when the cartridge 33 is inserted. Guide grooves 36 are formed at the front and rear of both side plates 7 of the driving body 5, and each guide groove 36 is inclined so as to become gradually lower from the front to the rear. The holder 23 is inserted inside the side plate 7 of the drive body 5, the upper and lower guide pins 24 are slidably engaged with the guide grooves 36 (see FIG. 8), and the front and rear guide pins 25 are inserted into both sides 3 of the support substrate 1. It is engaged in a vertically movable groove 37 which is formed and is open at the top. Therefore, as shown in FIGS. 7 and 8, when the drive body 5 is regulated to the retracted position by the engagement between the cam part 16 of the trigger lever 13 and the trigger part 21 of the drive body 5, the upper and lower guide pins 24 Guide groove 36
When the cam portion 16 of the trigger lever 13 is disengaged from the trigger portion 21 as described above and the driver 5 moves forward due to the elasticity of the tension spring 12, the guide pin 24 is located below the guide groove 36 and held in the lowered position.

Next, the operation of the above conventional example will be explained with reference to FIGS. 6 to 9. As shown in FIG.
The trigger portion 21 is engaged with the cam portion 16 of the trigger lever 13, and the drive body 5 is restricted to the retracted position against the elasticity of the tension spring 12. Therefore, as shown in FIG. 8, the upper and lower guide pins 24 of the holder 23
6, and the holder 23 is raised. When the cartridge 33 is inserted into the holder 23 from this state, the shutter pin 30 of the shutter lever 29 comes into contact with the auto shutter 34 of the cartridge 33, and the cartridge 33
3, it rotates and opens the auto shutter 34. When the cartridge 33 is inserted further back, the shutter pin 30 engages with the shutter operation notch recess 35 as shown in FIG. The cartridge 33 can remain in that position without being returned by the force of the shutter lever 29 biased by the spring 32 due to the frictional force caused by being held between the shutter pin 30 and the holder 23 by the elastic force of the spring 18. Further, when the cartridge 33 is inserted, the cartridge 33 comes into contact with the engagement protrusion 15 of the trigger lever 13, and as the cartridge 33 moves forward, the trigger lever 13 is rotated clockwise against the elasticity of the spring 18. When the trigger lever 13 rotates, the cam portion 16 separates from the trigger portion 21 of the driver 5, and the driver 5 moves forward due to the elasticity of the tension spring 12. As the drive body 5 moves, the guide pin 24 of the holder 23 is guided to the lower part of the guide groove 36, and the holder 23 and the cartridge 33 are lowered. The trigger section 21 is moved by the movement of the driver 5.
comes into contact with the tip of the cam portion 16 of the trigger lever 13 and stops the rotational movement of the trigger lever 13.
3 does not push out the cartridge 33. As described above, when the holder 23 is in the lowered state, the cartridge 33 is prevented from being pushed out. Conversely, when the driver 5 is pushed backward against the elastic force of the tension spring 12, the upper and lower guide pins 24 of the holder 23 are guided above the guide groove 36, and the holder 23 and the cartridge 33 rise. Further, as the driving body 5 moves backward, the trigger part 21 moves to the cam part 16 of the trigger lever 13.
The trigger lever 13 is rotated counterclockwise by the elasticity of the spring 18. As a result, the cartridge 33 is pushed out and the shutter pin 30 is removed from the shutter operation notch recess 35, and a portion of the cartridge 33 protrudes from the holder 23 due to the rotation of the trigger lever 13 and shutter lever 29. In this manner, in the conventional magnetic disk drive described above, a portion of the cartridge 33 can be made to protrude from the holder 23 by rotating the trigger lever 13 or the shutter lever 29, and the cartridge 33 can be removed from the holder 23.

0004

However, in the conventional cartridge ejection device, the purpose of the trigger lever 13 and the shutter lever 29 is to move the cartridge 33 up and down and to open and close the automatic shutter 34, rather than to push out the cartridge 33. Therefore, for the extrusion operation of the cartridge 33, the shape, rotation radius,
There are restrictions on changing the biasing force, etc., and it is not possible to arbitrarily select the amount of protrusion of the cartridge 33 from the holder 23. The present invention solves these conventional problems, and includes ensuring the ejection operation of the cartridge, and having a biasing means that can adjust the ejection force of the cartridge depending on the insertion position of the cartridge. ,
It is an object of the present invention to provide a cartridge ejecting device having a biasing means in which the force for ejecting the cartridge is substantially constant regardless of the insertion position of the cartridge.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a supporting substrate, a driving body slidably supported on the supporting substrate, and an urging member that biases the driving body in one direction. a holder that engages with an inclined surface provided on the driving body and moves up and down as the driving body moves horizontally; and a holder that is rotatably supported by the support substrate and restricts movement of the driving body by the urging means. At the same time, a trigger lever that can be rotated by a cartridge inserted in a holder to release the movement restriction of the driving body, a biasing means for urging the trigger lever in a direction of restricting the movement of the driving body, and a cartridge. The cartridge has a slider attached to the holder so as to be slidable in the insertion and ejection direction of the cartridge, and a biasing means for biasing the slider in the cartridge ejection direction. In addition, as a biasing means for biasing the slider in the cartridge ejection direction, a torsion mechanism consisting of a fixed coil part that is locked to the holder and a movable coil part provided between the contact part to the slider and the fixed coil part. A coil spring is used, and both arms of the movable coil part are formed in a dogleg shape convex in the cartridge insertion direction, and the length of both arms is such that the slider and torsion coil spring are in contact with each other when the cartridge is inserted. The length from the position to the moving coil section and the length from the moving coil section to the fixed coil section are made approximately equal.

[0006]

[Function] According to the present invention, a slider is provided which is slidable in the direction of insertion and ejection of the cartridge into the holder, and a biasing means for biasing the slider in the direction of ejection of the cartridge is provided. The discharge amount can be arbitrarily set by the amount of movement of the slider and the biasing force. In addition, the biasing means is a torsion coil spring consisting of a fixed coil part that is locked to the holder, and a moving coil part provided between the contact part to the slider and the fixed coil part, and further, both sides of the moving coil part are used. The arms are formed in a dogleg shape that is convex in the cartridge insertion direction, and the length of both arms is the same as the length from the position where the slider and torsion coil spring contact with the cartridge inserted to the movable coil part. Since the length from the moving coil section to the fixed coil is made almost equal, the biasing force of the torsion coil spring does not change much even if the slider position moves, and a stable biasing force is always applied to the cartridge. Be able to give.

[0007]

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 3 are plan views of main parts of a cartridge ejecting device according to an embodiment of the present invention, and FIG. 4 is a perspective view of main parts. 1 to 4, 23 is a holder, 24 is an upper and lower guide pin, 25 is a front and rear guide pin, 29 is a shutter lever, 32 is a spring, 33
is a cartridge, 34 is an auto shutter, 38 is a slide groove, 39 is a slider, 40 is a cartridge receiver, 4
1 is a spring receiver, 42 is a torsion coil spring, 43 is a hook, 44 is a spring shaft, 45 is a fixed coil section, 46 is a moving coil section, and 47 and 48 are arm sections. As shown in FIG. 4, a slide groove 38 is provided in the holder 23 in the sliding direction of the cartridge 33, and a slider 39 is slidably attached thereto. The slider 39 is provided with a cartridge receiver 40 that protrudes downward and comes into contact with the cartridge 33 inserted into the holder 23. A spring receiver 41 is provided at the upper part of the slider 39, and a torsion coil spring 42 that biases the slider 39 is slidably engaged therein. The holder 23 has a hook 43 and a spring shaft 4 for locking the torsion coil spring 42.
4 is provided. The torsion coil spring 42 has a spring shaft 44
A movable coil portion 46 is provided approximately in the center between the fixed coil portion 45 that engages with the fixed coil portion 45 and the position where the slider 39 and the torsion coil spring 42 come into contact with each other when the cartridge 33 is inserted into the holder 23. Yes, moving coil part 4
The arm portion 47 extending from 6 to the slider 39 and the movable coil portion 4
The arm portion 48 extending from the fixed coil portion 6 to the fixed coil portion 45 is formed in a dogleg shape that is convex in the insertion direction of the cartridge 33. The rest of the configuration is the same as the conventional example described above, so a description thereof will be omitted.

Next, the operation of this embodiment having the above configuration will be explained. Note that the operations of the similar parts to the conventional example are the same as those of the conventional example shown in FIGS. 6 to 9. Figure 1 shows cartridge 3
3 has been inserted to the position where it abuts the cartridge receiver 40 of the slider 39, and the upper and lower guide pins 24 of the holder 23 are located above the guide groove 36 of the drive body 5, as in the conventional example. The torsion coil spring 42 has a fixed coil portion 45 and a movable coil portion 46 both having an arm portion 48.
, the arm portion 47 is in a closed shape, and the size of the torsion coil spring 42 itself is small. FIG. 2 shows a state in which the cartridge 33 has been further inserted and is located approximately at the center of the amount of movement of the slider 39. The cartridge 33 is in contact with the shutter pin 30 of the shutter lever 29, and the torsion coil spring 42 with which the shutter pin 30 is in contact with the side surface of the auto shutter 34 extends from the fixed coil part 45 to the movable coil part 46 as the slider 39 moves. The arm portion 48 rotates around the fixed coil portion 45, and the movable coil portion 46 also rotates. The movable coil section 46 not only rotates itself, but also increases the angle that its arm section 47 makes with the arm section 48. This arm 4
Even if the slider 39 moves due to the movement of the arm section 7 and the arm section 48 and the distance from the fixed coil section 45 increases, the torsion coil spring 42 can follow the movement. Furthermore, since there are two coil parts, the spring constant of the torsion coil spring 42 is reduced. Further, as the slider 39 moves, the direction in which the torsion coil spring 42 biases the slider 39 and the sliding direction of the slider 39 form an angle, so that the spring force of the torsion coil spring 42 is applied in the sliding direction of the slider 39. Only the component force acting on the slider 39 causes a small increase in the urging force of the torsion coil spring 42 on the slider 39. FIG. 3 shows a state in which the cartridge 33 is further pushed in. The shutter lever 29 is rotated by the cartridge 33, and this rotation causes the cartridge 3 to rotate.
3. Open the auto shutter 34 and press the shutter pin 30.
is engaged with the shutter operation notch recess 35 as in the conventional example. Insertion of the cartridge 33 causes the trigger lever 13 to rotate, and the subsequent operations are the same as in the conventional example and will not be described further. The operation of ejecting the cartridge 33 by pushing the driver 5 backward against the biasing force of the tension spring 12 is performed when the trigger lever 13 pushes out the shutter operation notch recess 35 of the cartridge 33 and the shutter pin 30 comes off. The operation of the cartridge 33 is the same as that of the conventional example until it starts moving, and the subsequent operation of the cartridge 33 is performed by the biasing force of the slider 39, and the cartridge 33 is reliably pushed out to the state shown in FIG. In FIG. 3, the slider 39 is moved to the innermost position by the cartridge 33, and the torsion coil spring 42 is connected to the fixed coil portion 45 and the movable coil portion 46.
is in its most twisted state, and its spring force is greatest. However, since the slider 39 is apart from the fixed coil part 45 and the abutment position between the arm part 47 and the spring receiver 41 of the slider 39 is far apart, even if the moment as a spring force is large, the urging force on the slider 39 increases. There are few. Furthermore, since the angle between the direction in which the spring force of the torsion coil spring 42 acts and the sliding direction of the slider 39 is further increased, the component force of the torsion coil spring 42 in the sliding direction on the slider 39 increases. do not have.

FIG. 5 is a graph showing how the biasing force of the torsion coil spring 42 acting in the sliding direction of the slider 39 changes depending on the position of the slider 39. Torsion coil spring 42
The wire diameter is 0.5 mm, and both the fixed coil part 45 and the moving coil part 46 have a number of turns of 2.
, the inner diameter of the coil is 5 mm, and the arm portions 47 and 48 are set at 90° when no load is applied. The graph without a moving coil is the one in which the moving coil part 46 is not provided in the above settings and the wire is simply bent, and the moving coil part 4
The change in biasing force is greater than in the case where 6 is provided. The weight of the cartridge 33 is approximately 19 g, and even if a biasing force exceeding this weight is applied in the state shown in FIG. When the cartridge 33 is inserted in the vertical direction, the cartridge 33 cannot be lifted. In the case where the movable coil portion 46 is provided, there is little change in the biasing force, and the biasing force is greater than the weight of the cartridge 33 regardless of the position of the slider 39. And since the difference between the maximum value of the biasing force and the minimum value is small, the shutter pin 30 is attached to the shutter operation notch recess 3
5, the cartridge 33 engages with the shutter lever 29
The frictional force that prevents the cartridge from being pushed back is never exceeded, and the cartridge 33 does not start to move or change its position only by the biasing force of the cartridge 39. As described above, according to this embodiment, the ejection operation and amount of ejection of the cartridge 33 can be ensured without impairing other functions. Further, according to the embodiment described above, it is possible to obtain a biasing means in which the biasing force changes little with respect to a change in the position of the slider 39.

0010

[Effects of the Invention] As is clear from the above embodiments, the present invention provides a slider that biases the cartridge in the ejection direction, thereby making it possible to ensure the ejection operation and ejection amount of the cartridge. , the biasing force to the slider is a torsion coil spring having a fixed coil part and a moving coil part, both arms of the moving coil part are in a dogleg shape convex in the cartridge insertion direction, and the length of both arms is With the cartridge inserted, the length from the position where the slider contacts the torsion coil spring to the moving coil section and from the coil section to the fixed coil section are approximately equal.
This has the advantage that the biasing force changes little with respect to changes in the position of the slider, and the biasing means can be made compact.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a main part of a cartridge ejecting device according to an embodiment of the present invention at the time when cartridge insertion is started.

FIG. 2 is a plan view of a main part of a cartridge ejecting device in an embodiment of the present invention during cartridge insertion.

FIG. 3 is a plan view of a main part of the cartridge ejecting device according to an embodiment of the present invention when cartridge insertion is completed.

FIG. 4 is a perspective view of a main part of a cartridge ejecting device in an embodiment of the present invention.

FIG. 5 is a characteristic diagram of the slider biasing force in the cartridge ejecting device in one embodiment of the present invention.

FIG. 6 is an exploded perspective view of a conventional cartridge ejection device.

FIG. 7 is a perspective view of a main part of a conventional cartridge ejecting device.

FIG. 8 is a side view of a main part of a conventional cartridge ejecting device before a cartridge is inserted.

FIG. 9 is a plan view of a main part of a conventional cartridge ejecting device when cartridge insertion is completed.

[Explanation of symbols]

1... Support board, 2, 6... Bottom plate, 3, 7... Side plate,
4...Back plate, 5...Driver, 8, 17...Pin, 9...Elongated hole, 10, 11...Spring hanging part, 1
2...Tension spring, 13...Trigger lever, 14...
Cylindrical part, 15... Engagement projection, 16... Cam part,
18, 32... Spring, 19... Retaining ring, 20... Locking groove, 21... Trigger part, 22... Side wall, 2
3... Holder, 24... Up and down guide pin, 25... Front and rear guide pin, 26... Guide shaft, 27, 31...
Spring hook, 28... Fan-shaped opening, 29... Shutter lever, 30... Shutter pin, 33... Cartridge, 34... Auto shutter, 35... Shutter operation notch recess, 36... Guide groove, 37
...Groove, 38...Slide groove, 39...Slider, 4
0...Cartridge holder, 41...Spring holder, 42
...Torsion coil spring, 43...Hook, 44...Spring shaft, 45...Fixed coil part, 46...Movable coil part, 47, 48...Arm part.

Claims (3)

[Claims] 1. A supporting substrate, a driving body slidably supported by the supporting substrate, urging means for urging the driving body in one direction, and engaging with an inclined surface provided on the driving body. a holder that moves up and down with the horizontal movement of the drive body; and a holder that is rotatably supported by the support substrate, restricts movement of the drive body by the biasing means, and is rotated by a cartridge inserted in the holder. A trigger lever capable of releasing the restriction on movement of the driving body, a biasing means for urging the trigger lever in the direction of restricting the movement of the driving body, and a trigger lever attached to the holder so as to be slidable in the direction of insertion and ejection of the cartridge. A cartridge ejection device having a slider and a biasing means for biasing the slider in a cartridge ejection direction. 2. The biasing means for biasing the slider in the cartridge ejection direction comprises: a fixed coil portion that is locked to the holder; and a movable coil portion provided between the contact portion to the slider and the fixed coil portion. The cartridge ejection device according to claim 1, further comprising a torsion coil spring consisting of a torsion coil spring. 3. Both arms of the movable coil section are formed in a dogleg shape that is convex in the cartridge insertion direction, and the length of the both arms is such that the slider and torsion coil spring are connected to each other when the cartridge is inserted. 3. The cartridge ejection device according to claim 1, wherein the length from the abutting position to the movable coil portion is approximately equal to the length from the movable coil portion to the fixed coil portion.