JP2724930B2 - Magnetic recording / reproducing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording / reproducing apparatus, and more particularly, to a magnetic recording / reproducing apparatus which draws out a magnetic tape wound on a winding member and performs recording / reproducing.

[0002]

2. Description of the Related Art FIG. 21 is a plan view of a slide chassis of a conventional magnetic recording / reproducing apparatus. This magnetic recording / reproducing apparatus is provided in a camera-integrated video or the like.

[0003] On the back side of the slide chassis 1, loading arms 3a, 3b are mounted so as to be rotatable about rotation shafts 5a, 5b. Parts such as a relay arm and a guide base connected to the loading arm are omitted.

[0004] The slide chassis 1 is provided with slide chassis guide grooves 43a, 43b, 43c and 43d. Slide chassis guide grooves 43a, 43b, 4
Guide pins attached to a main chassis 51, which will be described later, are fitted into 3c and 43d, so that the slide chassis 1 can slide in the directions of arrows A and B. Also, on the slide chassis 1,
The spring hook 41 is fixed.

FIG. 22 is a plan view of a main chassis of a conventional magnetic recording / reproducing apparatus.

A loading motor 93, intermediate gears 96a to 96e, and a main cam 53 are rotatably mounted on the main chassis 51. 55 is the main cam 53
It is a rotation axis. The driving force of the loading motor 93 is
The power is transmitted to the main cam 53 via the intermediate gears 96a to 96e.

A slide chassis driving lever 59 is mounted on the main chassis 51 so as to be rotatable about a rotation shaft 61. Slide chassis drive lever 59
Are arranged on the main cam 53, and the cam pins 63 provided on the slide chassis drive lever 59 are connected to the slide chassis drive grooves 5 provided on the main cam 53.
7 is fitted.

A slide chassis drive pin 65 provided on a slide chassis drive lever 59 is fitted into a groove 56 provided on the spring hook 41 on the slide chassis 1 (see FIG. 21). Main cam 5
By the rotation of 3, the cam pin 63 drives the slide chassis driving lever 59 in the directions of arrows C and D, whereby the slide chassis 1 (see FIG. 21) slides in the directions of arrows A and B.

On the main chassis 51, a loading lever 101 is arranged. Loading lever 1
01 in the loading lever guide groove 50 provided in
By fitting the guide pins 52 mounted on the main chassis 51, the loading lever 101 is slidable in the directions of arrows A and B. The cam pin 66 provided on the loading 101 is
Is fitted in the loading lever driving groove 60 provided in the first position. Therefore, the rotation of the main cam 53 causes the loading lever 101 to slide in the directions of arrows A and B.

On the main chassis 51, a pinch pressure lever 71 is rotatably mounted. The pinch roller is driven by utilizing the rotation of the pinch pressure lever 71. On the main chassis 51, a pinch roller pressing cam 70 and intermediate gears 78a and 78b are rotatably mounted. The rotational force of the main cam 53 is
b, 78a, and transmitted to the pinch pressing lever 71 through the pinch roller pressing cam 70, whereby the pinch pressing lever 71 rotates. In the figure, reference numeral 77 denotes a drum.

By rotating the loading arms 3a and 3b, a guide roller (not shown) connected to the loading arms 3a and 3b draws out a magnetic tape (not shown) and presses it against the drum 77, and Performs tape recording and playback. FIGS. 23 to 25 show the rotation of the loading arms 3a and 3b provided in the conventional magnetic recording apparatus.
This is performed using

FIG. 23 shows an eject state. In the eject state, the loading arms 3a, 3a
b of the loading lever 101
Loading lever bending portions 107a, 10
7b, and the loading lever 101 is pushed inward and bent. Since the loading arm ends 92a and 93a are made of a spring material, a spreading force is generated, thereby applying a force in the H direction and the I direction to the loading arms 3a and 3b, respectively.

In this state, the loading motor 9
When 3 rotates, the slide chassis driving lever 59 starts rotating in the direction of arrow D. Thereby, the slide chassis 1 starts to move in the direction of arrow B.

When the slide chassis 1 further slides in the direction of arrow B, the contact between the ends 92a and 92b and the bending portions 107a and 107b of the loading lever is released, and then the slide arms 1 are provided on the loading arms 3a and 3b. The loading arm hooks 109a and 109b engage with the loading lever pins 111a and 111b provided on the loading lever 101, and the sliding of the slide chassis 1 is completed as shown in FIG.

After the movement of the slide chassis 1 is completed, the main cam 53 is further rotated, so that the loading lever driving groove 60 presses the cam pin 66. This causes the loading lever 101 to start moving in the direction of arrow A. Since the loading arm hook 109a and the loading lever pin 111a are in contact with each other and the loading arm hook 109b is in contact with the loading lever pin 111b, the loading lever 101 is moved in the direction indicated by the arrow A.
When moving in the direction, the loading arms 3a, 3b
Starts rotating in the directions of arrows J and K about the rotation shafts 5a and 5b, respectively. FIG. 25 shows a state after the rotation of the loading arms 3a and 3b is completed.
When the loading arms 3a and 3b enter the state shown in FIG. 25, the operation of the guide roller (not shown) connected to the loading arms 3a and 3b to press the magnetic tape (not shown) against the drum 77 is completed. I do.

[0016]

As shown in FIG. 24,
In the conventional magnetic recording / reproducing apparatus, the loading arm 101 is moved in the direction of arrow A to rotate the loading arms 3a and 3b. Therefore, the conventional magnetic recording / reproducing apparatus has a complicated structure because the loading lever 101 must be moved in addition to the slide chassis 1.

The present invention has been made to solve such a conventional problem. An object of the present invention is to provide a magnetic recording / reproducing apparatus having a simpler structure.

[0018]

According to a first aspect of the present invention, there is provided an electronic apparatus comprising: a main chassis having a rotary head drum; and a slide chassis on which a cassette is mounted and which moves relative to the main chassis. A magnetic recording / reproducing apparatus that pulls out a magnetic tape wound on the cassette by a relative movement of the slide chassis with respect to a chassis, wherein the arm is rotatably attached to the slide chassis and rotates according to the relative movement. A guide rail provided on the main chassis, a slide rail provided on the slide chassis, and a drawer member connected to the arm, wherein the slide rail is movable according to the relative movement. In the middle of the relative movement, connected to the guide rail, the drawer member, By moving while changing a movement path to the guide rail from the slide rail in response to rotation of the arm in response to pairs movement is characterized by withdrawing the magnetic tape.

According to a second aspect of the present invention, in addition to the first aspect, when the drawer member passes through a connecting portion between the guide rail and the slide rail, the guide rail or the slide rail may be used. It is characterized by not falling off the rails.

[0020]

[0021]

In the magnetic recording / reproducing apparatus according to the present invention, the magnetic tape can be pulled out by moving the drawer member connected to the arm in accordance with the relative movement of the slide chassis with respect to the main chassis.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a magnetic recording / reproducing apparatus according to the present invention will be described below. FIG. 2 is a plan view of a slide chassis according to the present invention.

On the back side of the slide chassis 1, loading arms 3a and 3b are mounted so as to be rotatable about rotation shafts 5a and 5b.

On the slide chassis 1, slide guide rails 20a and 20b are slidably mounted in the directions of arrows A and B. FIG. 8 is a plan view of the slide guide rail 20b, and FIG. 9 is a plan view of the slide guide rail 20a.

A guide pin 44a provided on the slide chassis 1 is fitted into a slide guide rail guide groove 45a provided on the slide guide rail 20a. A guide piece 48 provided on the slide chassis 1 is arranged on a guide portion 46 provided on the slide guide rail 20a. These structures allow the slide guide rail 20a to slide.

One end of the slide guide rail biasing spring 8a is attached to the guide piece 48, and the other end is attached to the slide guide rail 20a. The slide guide rail 20a is urged in the B direction by the slide guide rail urging spring 8a.

A guide pin 44b provided on the slide chassis 1 is also fitted into a slide guide rail guide groove 45b provided on the slide guide rail 20b. Thus, the slide guide rail 20b can be slid. One end of the slide guide rail biasing spring 8b is attached to the slide chassis 1, and the other end is attached to the slide guide rail 20b. The slide guide rail 20b is also urged in the B direction by the slide guide rail urging spring 8b.

A third relay arm 7a is rotatably mounted on one end of the loading arm 3a, and a first relay arm 9a and a second relay arm 11a are rotatable on the third relay arm 7a. Attached to. A first guide base 13a slidably disposed in a first guide base guide groove 47a provided on the slide guide rail 20a is attached to the first relay arm 9a. A first guide roller 17a and an inclined guide 21 are attached to the first guide base 13a.

The second relay arm 11a has a second guide base 1 slidably disposed in a second guide base guide groove 49a provided in the slide guide rail 20a.
5a is attached. The second guide roller 19a is attached to the second guide base 15a.

The slide guide rail 20b also has a similar structure. The third relay arm 7b corresponds to the third relay arm 7a, the first relay arm 9b corresponds to the first relay arm 9a, and the second relay arm 9b corresponds to the second relay arm 9a. The relay arm 11b corresponds to the second relay arm 11a, the first guide base 13b corresponds to the first guide base 13a, and the second guide base 15b corresponds to the second
The first guide roller 17b corresponds to the guide base 15a.
Corresponds to the first guide roller 17a, the second guide roller 19b corresponds to the second guide roller 19a, and the first guide base guide groove 47b corresponds to the first guide base guide groove 47.
a, the second guide base guide groove 49b (see FIG. 8) corresponds to the second guide base guide groove 49a.

The slide chassis 1 is provided with slide chassis guide grooves 43a, 43b, 43c and 43d. Slide chassis guide grooves 43a, 43b, 4
Guide pins attached to a main chassis 51, which will be described later, are fitted into 3c and 43d, so that the slide chassis 1 can slide in the directions of arrows A and B.

A tension arm 23 is attached to the slide chassis 1 so as to be rotatable about a rotation shaft 25. A guide 27 is attached to the tension arm 23.

A take-up guide arm 29 is attached to the slide chassis 1 so as to be rotatable about a rotation shaft 31. A take-up guide 33 is attached to the take-up guide arm 29.

Further, a sub-pinch arm 39 is attached to the slide chassis 1 so as to be rotatable about a rotation shaft 37 provided on the slide chassis 1. On the sub-pinch arm 39, the pinch arm 35 is
It is attached so that it can rotate around. A pinch roller 167 is attached to the pinch arm 35.

FIG. 3 is a plan view of a main chassis 51 of one embodiment of the magnetic recording / reproducing apparatus according to the present invention. A loading motor 93, a loading gear 95, a tension cam 97, a mode detection gear 99, and a main cam 53 are rotatably mounted on the main chassis 51. Reference numeral 55 denotes a rotation shaft of the main cam 53. The driving force of the loading motor 93 is
5, transmitted to the main cam 53 via the tension cam 97 and the mode detection gear 99.

A slide chassis driving lever 59 is mounted on the main chassis 51 so as to be rotatable about a rotation shaft 61. Slide chassis drive lever 5
9 is disposed on the main cam 53, and the cam pin 63 provided on the slide chassis driving lever 59 is
It is fitted into a slide chassis drive groove 57 provided in the main cam 53.

A slide chassis drive pin 65 provided on a slide chassis drive lever 59 is fitted into a groove 56 provided on the spring hook 41 on the slide chassis 1. By the rotation of the main cam 53, the cam pin 63 drives the slide chassis driving lever 59 in the directions of arrows C and D, whereby the slide chassis 1 (see FIG. 2) slides in the directions of arrows A and B.

On the main chassis 51, a drum 77 is provided.
Is attached. On both sides of the drum 77, a first guide rail 79a and a second guide rail 79b are arranged. Guide base guide grooves 81 and 83 are provided in the first guide rail 79a. Guide base guide grooves 85 and 87 are provided in the second guide rail 79b.

The guide base guide groove 81 is connected to the second guide base guide groove 49a (see FIG. 2), and the guide base guide groove 83 is connected to the first guide base guide groove 47a (see FIG. 2). The groove 85 is connected to the first guide base guide groove 47b (see FIG. 2), and the guide base guide groove 87 is connected to the second guide base guide groove 49.
b (see FIG. 8).

A capstan motor 75 having a capstan 76 as an axis is mounted near the second guide rail 79b. 89a is a first inclined guide, 89b
Is a second inclined guide. 91a is a first impedance roller, and 91b is a second impedance roller.

Incidentally, reference numeral 69 denotes a pinch operation lever,
1 is a pinch crimp lever. Reference numeral 101 denotes a loading lever, which is related to driving of the loading arms 3a and 3b (see FIG. 2). A detailed description of the loading lever 101 will be given later.

Next, the loading operation, that is, the operation of the first guide bases 13a and 13b and the second guide bases 15a and 15b shown in FIG. 2 is performed with reference to FIGS.

FIG. 4 shows the eject state. The cassette 113 (see FIG. 1) is mounted on the slide chassis 1. In the eject state, the tape 105
The guide group (such as the guide 27) and the pinch roller 167 that are in contact with the non-magnetic surface side of the cassette mouse 22 are housed in the cassette mouse 22, and the cassette 113 is detached in this state.

In the eject state, the arm projections 103a provided on the loading arms 3a and 3b are provided.
103b abuts on loading lever bending portions 107a and 107b provided on the loading lever 101,
It is bent inward. Since the loading lever 101 is a spring material, a force for spreading is generated, and as a result, a force in the E direction and the F direction is generated on the loading lever 101. The loading arm 3
A force in the H direction acts on a. Further, a force in the I direction acts on the loading arm 3b by the force in the F direction.

When the loading arm 3a receives a force in the H direction, the first guide base 13a and the second guide base 15a are drawn in the A direction. The first guide base 13a and the second guide base 15a push the slide guide rail 20a in the A direction when sliding in the A direction. Thus, the slide guide rail 20a slides in the direction A against the slide guide rail biasing spring 8a and stops at a predetermined position.

The loading arm 3b also receives a force in the direction I similarly to the case of the loading arm 3a, so that the first guide base 13b and the second guide base 15b.
In the direction A. When the first guide base 13b and the second guide base 15b slide in the A direction, they push the slide guide rail 20b in the A direction. Accordingly, the slide guide rail 20b also slides in the direction A against the slide guide rail biasing spring 8b and stops at a predetermined position.

In this state, the loading motor 9
When 3 rotates, the slide chassis driving lever 59 starts rotating in the direction of arrow D. Thereby, the slide chassis 1 starts to move in the direction of arrow B.

Further, as the slide chassis 1 slides in the direction of arrow B, as shown in FIG. 5, the arm protrusions 103a and 103b and the loading lever bending portion 10 are formed.
The contact with the loading arms 3a, 107b is released, and then the loading arm hooks 109a, 109b provided on the loading arms 3a, 3b are moved to the loading lever pins 111a, 111b provided on the loading lever 101.
Engage with.

When the sliding of the slide chassis 1 in the direction of arrow B further proceeds, the loading arms 3a and 3b start rotating in the directions of arrows J and K. Thereby, the first guide bases 13a and 13b, the second guide base 15a,
15b starts moving in the direction of arrow B.

When the first guide bases 13a, 13b and the second guide bases 15a, 15b move in the direction of arrow B, there is no force against the slide guide rail biasing springs 8a, 8b, and the slide guide rails 20a, 20b are moved.
b is the first and second guide bases 13a, 13b, 1 by the urging forces of the slide guide rail urging springs 8a, 8b.
It moves in the direction of arrow B together with 5a and 15b. Note that 17
Reference numeral 3 denotes the amount of movement of the slide chassis 1 from the ejected state. 175 is a slide guide rail 20
The movement amount of “a” is shown.

When the sliding of the slide chassis 1 in the direction of arrow B further proceeds, as shown in FIG. 6, the slide guide rail 20a and the first guide rail 79a are connected, and the slide guide rail 20b and the second guide rail 79b are connected. I do. The first guide bases 13a and 13b and the second guide bases 15a and 15b are slide guide rails 20a,
By the end of passing through 20b, slide guide rail 2
0a and the first guide rail 79a, and the slide guide rail 20b and the second guide rail 79b.

When the sliding of the slide chassis 1 in the direction of arrow B further proceeds, the first guide bases 13a, 13b,
The second guide bases 15a and 15b are connected to the first guide rail 7
9a and the second guide rail 79b.

When the slide of the slide chassis 1 in the direction of arrow B further proceeds, the first guide bases 13a and 13b and the second guide bases 15a and 15b are moved to the catcher before the slide of the slide chassis 1 is completed, as shown in FIG. Positioned by pins (not shown).

After the slide of the slide chassis 1 is completed, the loading arms 3a and 3b are
When the first guide bases 13a, 13b are bent, the forces in the directions of arrows J and K are urged.
b, the second guide base 15a is in a state of pressing a catcher pin (not shown). Therefore, the positioning of the guide base is performed more reliably.

Further, regarding unloading, since the loading arm hooks 109a and 109b are engaged with the loading lever pins 111a and 111b,
Just slide the slide chassis 1 in the A direction,
Unloading can be performed.

Since the spring hooks 41 have spring properties, even when the slide chassis driving pin 65 moves beyond the stroke of the slide chassis 1 during unloading, the overstroke can be absorbed. .

Next, the tape path in this embodiment will be described with reference to FIG. Supply side reel 11 of cassette 113
The tape 105 that has exited the tape 5a passes through the guide 27, the first inclined guide 89a, is inclined on the running plane, and further passes through the second guide roller 19a, the first impedance roller 91a, the first guide roller 17a, and the inclined guide 21, and then the drum 105 7
7 is wound. The tape 105 recorded and reproduced by the drum 77 passes through the first guide roller 17b, the second impedance roller 91b, the second guide roller 19b, and the second inclined guide 89b, and returns to its original running plane. It is sandwiched between pinch rollers 167 and is driven at a constant speed.

Further, the tape 105 is wound on the winding reel 115b through the guide 33.

Next, a mechanism for preventing the guide base from coming off will be described. That is, at the time of unloading, the first guide base 13a and the second guide base 15a move from the first guide rail 79a to the slide guide rail 20a for some cause (for example, the first guide base 13a).
a, the second guide base 15a is a slide guide rail 2
When the slide guide rail 20a is separated from the first guide rail 79a at the time of being hooked on the first guide rail 13a, the first guide base 13a and the second guide base 15a fall off. The same can be said for the first guide base 13b and the second guide base 15b on the take-up side. A mechanism for preventing this will be described with reference to FIGS.

FIG. 10 shows an ejected state, that is, a state in which the slide guide rail 20a is separated from the first guide rail 79a. A hook lever 117 is attached to the slide guide rail 20a so as to be rotatable about a shaft 118. One end of the hook lever spring 119 is attached to the hook lever 117, and the other end is attached to the slide guide rail 20a. The hook lever 117 receives a force in the L direction by the urging force of the hook lever spring 119.
In the state shown in FIG. 10, the second guide base 15a
Presses the hook lever 117 and pushes the hook lever 117 in the M direction.

From loading, the second guide base 15
When the contact between the hook lever 117 and the hook lever 117 is released, an L-direction force is applied to the hook lever 117, so that the hook 123 of the hook lever 117 is hooked on the lock pin 121 provided on the first guide rail 79a. Can be This state is shown in FIG. At the time of unloading, the second guide base 15a presses the hook lever 117, and the hook 123
Since the connection between the slide guide rail 20a and the first guide rail 79a does not separate until the hook on the lock pin 121 is released, the first guide base 13a and the second
The guide base 15a can be reliably prevented from falling off.
It is of course possible to provide the same mechanism on the take-up side, that is, on the first guide base 13b or the second guide base 15b.

Next, another example of the guide base detachment preventing mechanism will be described with reference to FIGS. FIG. 12 shows the state of the ejection, that is, the slide guide rail 20.
a, 20b and the first guide rail 79a, the second guide rail 79b are shown separated from each other. The slide guide rail 20a is provided with a groove 120a for preventing detachment in addition to the slide guide rail guide groove 45a.
A pin 121 provided on the lock arm 122a in this groove
a is fitted. FIG. 13 shows the lock arm 122a.
FIG. 122b is a take-up side lock arm. The lock arm 122a is between the slide chassis and the loading arm 3a. The lock arm 122a is connected to a fulcrum 1 provided below the slide chassis.
The slide guide rail 20a rotates around the center 23a according to the amount of movement of the slide guide rail 20a. The lock arm 122b on the take-up side is also attached in the same manner as on the supply side. 12
0b denotes a groove for preventing detachment, 121b denotes a pin, and 123b denotes a fulcrum.

In the eject state, the slide guide rails 20a and 20b are connected to the first guide bases 13a and 13a.
3b, it is pulled in the direction A by the second guide bases 15a, 15b.

When the loading is started, as shown in FIG. 14, the slide guide rails 20a and 20b slide in the direction B and are connected to the first guide rail 79a and the second guide rail 79b. Loading arm 3a, 3b
Lock pins 124a and 124b are provided on the upper side. There is a loading arm 3a under the slide chassis. The lock pin 124a protrudes above the slide chassis from a hole 125a provided in the slide chassis. Similarly, a hole 125b is provided on the take-up side.

In this state, the lock arms 122a, 1a
22b does not abut against the lock pins 124a and 124b, the lock arms 122a and 122b
And Q direction. Therefore, the slide guide rails 20a and 20b can move in the A direction.

The loading proceeds further, and the first guide bases 13a and 13b and the second guide bases 15a and 15b
Is started as shown in FIG. In this state, if the lock arms 122a and 122b try to rotate in the P and Q directions, the lock arms 122a and 122b
b contacts the lock pins 124a and 124b. Since the lock arms 122a and 122b cannot rotate in the P and Q directions, the slide guide rails 20a and
0b cannot move in the direction A, so that the slide guide rails 20a and 20b do not separate from the first guide rail 79a and the second guide rail 79b, respectively. For this reason, at the time of unloading, the first guide bases 13a and 13b and the second guide bases 15a and 15b
Is caught on the slide guide rails 20a, 20b, the slide guide rails 20a, 20b and the first
Since the guide rail 79a and the second guide rail 79b are connected, the guide base does not fall out of the guide groove. FIG. 16 shows a loading end state. The shape of the lock arm is processed so that the lock arm does not rotate in the P and Q directions until the guide base rides on the slide guide rail during unloading. That is, the shape of the lock arm is processed so that the lock arm and the lock pin abut when the lock arm attempts to rotate in the P and Q directions.

Still another means for preventing the first guide base 13a and the second guide base 15a from falling off will be described with reference to FIG. A reflection type photo interrupter 125 is attached to the main chassis 51. A reflection plate 127 such as a mirror is attached to the slide guide rail 20a. Until the first guide base 13a and the second guide base 15a (not shown in FIG. 17) move to the slide guide rail 20a, the slide guide rail 20a and the first guide rail 79a (not shown in FIG. 17) are connected. The movement of the slide guide rail 20a may be monitored by the reflective photo interrupter 125 so that the connection is not separated.
That is, before the guide bases 13a and 13b move to the slide guide rail 20a, the slide guide rail 2
When 0a is separated from the guide rail 79a, the loading motor 93 may be stopped or reversely rotated.

As shown in FIG. 4, in one embodiment of the present invention, the first guide base 13a, 1
3b, the second guide bases 15a, 15b press the slide guide rails 20a, 20b in the direction of arrow A. However, the present invention is not limited to this, and such a configuration is not necessary if there is sufficient space.

As shown in FIG. 5, in one embodiment of the present invention, the loading arms 3a and 3b are driven by engagement of the loading arm hooks 109a and 109b with the loading lever pins 111a and 111b. . However, the present invention is not limited to this, and may be performed using a mechanism such as a rack.

FIG. 18 shows a structure using a rack. Loading plate 129a and loading plate 1
The main chassis (FIG. 1)
8 (not shown). Loading board 1
The loading plate guide grooves 136 are provided in 29a and 129b.
The guide pin 138 provided on the main chassis is fitted in the loading plate guide groove 136. Therefore, the stacking of the loading plate 129a and the loading plate 129b is slidable in the directions of arrows A and B. Although not shown in FIG. 18, the loading plate 129a and the loading plate 129b are urged in the direction of arrow A by an urging means such as a spring (not shown). The loading plate 129a is provided with a rack 131a, and the loading plate 129b is provided with a rack 131b.

At the time of ejection, the loading arms 3a and 3b are at positions indicated by N. When the loading starts, the loading arms 3a, 3a
b moves, the rack 131a meshes with the gear 134a, and the rack 131b meshes with the gear 134b, so that the loading arms 3a and 3b are in the state indicated by O.

The loading plates 129a and 129b are urged in the direction of arrow A by a spring or the like in order to absorb the overstroke by slightly moving the loading plates 129a and 129b in the direction of arrow B.

Further, the structure in which the two loading plates are superposed is employed in order to drive the loading arm 3a and the loading arm 3b independently and to eliminate an error between the loading plates 129a and 129b when the loading is completed. It is.

As shown in FIG. 7, in one embodiment of the present invention, the first guide bases 13a and 13b and the second guide base 1 are driven by the urging force of the loading lever 101.
The positioning of 5a and 15b is ensured. Therefore, the loading lever pins 111a and 111b are attached to the loading lever 101. However, the loading arms 3a, 3b and the first guide base 13a,
If the members (for example, the third relay arms 7a, 7b) between the second guide base 13b and the second guide bases 15a, 15b are configured to generate a biasing force at the time of completion of loading, the loading lever pins 111a, 111b are connected to the main chassis 51 may be directly attached.

FIG. 19 is a plan view of the third relay arm 133 capable of generating an urging force, and FIG. 20 is a side view of the third relay arm 133.

When the loading is completed, the third relay arm 13
If 3 is contracted, the reaction of the guide base presses the catcher pin, and the positioning of the guide base is ensured.

[0077]

As described above, in the present invention, the movement of the tape pull-out member is performed by the sliding force when the slide chassis moves relative to the main chassis, and the tape pull-out member slides along the movement path of the pull-out member. It is provided on the chassis and the main chassis. Therefore, the power required to move the drawer member for pulling out the magnetic tape is only the power required to move the slide chassis relative to the main chassis.
The structure of the magnetic recording / reproducing device can be made simpler, and the mechanism for moving the drawer member can be made simpler.

[Brief description of the drawings]

FIG. 1 is a plan view of a tape path of an embodiment of a magnetic recording / reproducing apparatus according to the present invention.

FIG. 2 is a plan view of a slide chassis of one embodiment of the magnetic recording / reproducing apparatus according to the present invention.

FIG. 3 is a plan view of a main chassis of one embodiment of the magnetic recording / reproducing apparatus according to the present invention.

FIG. 4 is a plan view for explaining the operation of a first guide base and a second guide base provided in an embodiment of the magnetic recording / reproducing apparatus according to the present invention.

FIG. 5 is a plan view for explaining operations of a first guide base and a second guide base provided in an embodiment of the magnetic recording / reproducing apparatus according to the present invention.

FIG. 6 is a plan view for explaining operations of a first guide base and a second guide base provided in an embodiment of the magnetic recording / reproducing apparatus according to the present invention.

FIG. 7 is a plan view for explaining the operation of a first guide base and a second guide base provided in an embodiment of the magnetic recording / reproducing apparatus according to the present invention.

FIG. 8 is a plan view of a slide guide rail 20b provided in an embodiment of the magnetic recording / reproducing apparatus according to the present invention.

FIG. 9 is a plan view of a slide guide rail 20a provided in an embodiment of the magnetic recording / reproducing apparatus according to the present invention.

FIG. 10 is a plan view for explaining an example of a guide base detachment prevention mechanism.

FIG. 11 is a plan view for explaining an example of a guide base detachment prevention mechanism.

FIG. 12 is a plan view for explaining another example of a guide base detachment prevention mechanism provided in an embodiment of the magnetic recording / reproducing apparatus according to the present invention.

FIG. 13 is a plan view of a lock arm provided in an example of a guide base detachment prevention mechanism.

FIG. 14 is a plan view for explaining another example of a guide base detachment prevention mechanism provided in an embodiment of the magnetic recording / reproducing apparatus according to the present invention.

FIG. 15 is a plan view for explaining another example of a guide base detachment prevention mechanism provided in an embodiment of the magnetic recording / reproducing apparatus according to the present invention.

FIG. 16 is a plan view for explaining another example of a guide base detachment preventing mechanism provided in an embodiment of the magnetic recording / reproducing apparatus according to the present invention.

FIG. 17 is a schematic view showing still another example of the guide base detachment prevention mechanism.

FIG. 18 is a plan view showing another example of a loading arm rotating mechanism provided in an embodiment of the magnetic recording / reproducing apparatus according to the present invention.

FIG. 19 is a plan view showing another example of the third relay arm provided in the embodiment of the magnetic recording / reproducing apparatus according to the present invention.

20 is a side view of the third relay arm shown in FIG.

FIG. 21 is a plan view of a slide chassis of a conventional magnetic recording / reproducing apparatus.

FIG. 22 is a plan view of a main chassis of a conventional magnetic recording / reproducing apparatus.

FIG. 23 is a plan view for explaining rotation of a loading arm provided in a conventional magnetic recording / reproducing apparatus.

FIG. 24 is a plan view for explaining rotation of a loading arm provided in a conventional magnetic recording / reproducing apparatus.

FIG. 25 is a plan view for explaining rotation of a loading arm provided in a conventional magnetic recording / reproducing apparatus.

[Explanation of symbols]

 1 Slide chassis 3a, 3b Loading arm 51 Main chassis 109a, 109b Loading arm hook 111a, 111b Loading lever pin

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takashi Koyama 22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka Inside Sharp Corporation (72) Inventor Yoshiyuki Yokomachi 22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka Sharp shares In-company (72) Inventor Kazutaka Abe 22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka Inside Sharp Corporation (56) References JP-A-63-193367 (JP, A) JP-A-63-188851 (JP, A JP-A-63-313341 (JP, A) JP-A-2-30144 (JP, U)

Claims (2)

(57) [Claims] 1. A main chassis having a rotary head drum, and a slide chassis on which a cassette is mounted and which moves relative to the main chassis, wherein the cassette is wound around the cassette by the relative movement of the slide chassis with respect to the main chassis. A magnetic recording / reproducing apparatus for pulling out a taken magnetic tape, wherein the arm is rotatably attached to the slide chassis and rotates in accordance with the relative movement, and a guide rail provided on the main chassis, A slide rail provided on the slide chassis, and a drawer member connected to the arm, wherein the slide rail is movable in accordance with the relative movement, and the slide rail is in the middle of the relative movement. Connected, and the drawer member is connected to the arm in accordance with the relative movement. A magnetic recording / reproducing apparatus, wherein the magnetic tape is pulled out by moving while changing a moving path from the slide rail to the guide rail. 2. The magnetic recording / reproducing apparatus according to claim 1, wherein the drawer member does not drop off from the guide rail or the slide rail when passing through a connecting portion between the guide rail and the slide rule. apparatus.