JP2627465C - - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording / reproducing apparatus, and more particularly, to a main chassis.
The present invention relates to a magnetic recording / reproducing apparatus having a mechanism for relatively moving a slide chassis.
Things. 2. Description of the Related Art FIG. 24 is a plan view of a slide chassis of a conventional magnetic recording / reproducing apparatus. this
The magnetic recording / reproducing device is provided in a camera-integrated video or the like. On the back side of the slide chassis 1, loading arms 3a and 3b
It is attached so as to be rotatable around a and 5b. Note that contact with the loading arm
Parts such as a continuous relay arm and a guide base are omitted. [0004] The slide chassis 1 has slide chassis guide grooves 43a, 43b, 43c.
, 43d are provided. Slide chassis guide grooves 43a, 43b, 43c
, 43d are fitted with guide pins attached to the main chassis 51 described later.
As a result, the slide chassis 1 slides in the directions of arrows A and B.
Id is possible. On the slide chassis 1, a spring hook 41 is provided.
Fixed. FIG. 25 is a plan view of a main chassis of a conventional magnetic recording / reproducing apparatus. The main chassis 51 includes a loading motor 93, intermediate gears 96a to 96e.
, A main cam 53 is rotatably mounted. 55 is the time of the main cam 53
It is a turning axis. The driving force of the loading motor 93 is transmitted through the intermediate gears 96a to 96e.
And transmitted to the main cam 53. On the main chassis 51, a slide chassis driving lever 59 is provided with a rotating shaft 61.
It is mounted so that it can rotate around the center. The slide chassis driving lever 59 is
It is arranged on the main cam 53 and is provided on the slide chassis drive lever 59
The cam pin 63 is provided with a slide chassis driving groove provided in the main cam 53.
57. A groove provided on a spring hook 41 on the slide chassis 1 (see FIG. 24)
The portion 56 includes a slide chassis provided on a slide chassis driving lever 59.
The driving pin 65 is fitted. The rotation of the main cam 53 causes the cam pin 6
3 drives the slide chassis drive lever 59 in the directions indicated by the arrows C and D.
As a result, the slide chassis 1 (see FIG. 24) slides in the directions of arrows A and B.
Do. A loading lever 101 is provided on the main chassis 51. B
The loading lever guide groove 50 provided on the loading lever 101
By inserting guide pins 52 mounted on the chassis 51, the loading
The swing lever 101 is slidable in the directions of arrows A and B. Rodi
The cam pin 66 provided on the locking lever 101 is
It is fitted into the loading lever driving groove 60. Therefore, the main cam 53
Is rotated, the loading lever 101 moves in the directions of arrows A and B.
Slide. A pinch pressure lever 71 is rotatably mounted on the main chassis 51.
I have. Pull the magnetic tape with a pinch roller (not shown)
The magnetic tape is pressed against a capstan (not shown) attached to the motor 75.
However, the driving of the pinch roller utilizes the rotation of the pinch pressing lever 71.
Do. On the main chassis 51, a pinch roller pressing cam 70, an intermediate gear 7
8a and 78b are rotatably mounted. The rotational force of the main cam 53 is intermediate
Pinch pressure lever 7 via gears 78b, 78a and pinch roller pressure cam 70
1 to rotate the pinch pressure lever 71. 77 in the figure
Lamb. [0011] A camera-integrated video or the like is intended to be easily carried by a user.
Weight reduction is progressing. Therefore, magnetic recording provided in a camera-integrated video, etc.
The playback device must also be as lightweight as possible. The present invention has been made to solve such a conventional problem. The invention
The purpose of this is that the drive mechanism of the slide chassis and the drive mechanism of the pinch roller can be used
Another object of the present invention is to provide a magnetic recording / reproducing apparatus capable of reducing weight and weight. According to the present invention, a slide chassis is relatively moved with respect to a main chassis.
A cam, connected to the cam and the slide chassis, and driven by rotation of the cam
A slide chassis driving lever, which is provided on the main chassis, and
A link rod connected to the cam and driven by rotation of the cam;
Provided on the chassis and linked to the movement of the link bar when the slide chassis is moved.
As well as being driven by the movement of the link rod and pressed against the capstan shaft.
And a pinch roller. In the magnetic recording / reproducing apparatus according to the present invention, the cam is rotated by rotating the cam.
The slide chassis drive lever connected to the ride chassis is driven,
The slide chassis moves relative to the
The linked link rod is driven. The pinch roller is driven by the driven link rod.
Is crimped to the capstan shaft. Therefore, a single cam drives the slide chassis.
The moving mechanism and the driving mechanism for the pinch roller can be used as
There is no need to separately provide a drive mechanism and a pinch roller drive mechanism. For this reason
Reduces the number of parts used for the drive mechanism of the id chassis and the drive mechanism of the pinch roller
And the weight of the magnetic recording / reproducing device can be reduced. An embodiment of a magnetic recording / reproducing apparatus according to the present invention will be described below. Figure 2 shows this
1 is a plan view of a slide chassis of an embodiment of a magnetic recording / reproducing apparatus according to the present invention. On the back side of the slide chassis 1, loading arms 3a and 3b
It is attached rotatably about 5a, 5b. On the slide chassis 1
Slide guide rails 20a and 20b slide in the directions of arrows A and B
Mounted freely. FIG. 8 is a plan view of the slide guide rail 20b.
FIG. 9 is a plan view of the slide guide rail 20a. Slide guide rail
A slide guide rail 45a provided in the
A guide pin 44a provided on the chassis 1 is fitted. Slide guide rail
The slide chassis 1 is provided on the guide portion 46 provided on the slide 20a.
A guide piece 48 is arranged. With these structures, the slide guide rail
20a slide is possible. One side 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 2.
0a. The slide guide rail biasing spring 8a allows the slide
The guide rail 20a is urged in the B direction. The slide guide rail guide groove 45 provided on the slide guide rail 20b
The guide pin 44b provided on the slide chassis 1 is also fitted into the slide chassis 1b.
. Thus, the slide guide rail 20b can be slid. Sura
One end of the guide guide biasing spring 8b is attached to the slide chassis 1.
The other end is attached to the slide guide rail 20b. Sly
The slide guide rail 20b is also moved in the B direction by the guide rail biasing spring 8b.
Being energized. At one end of the loading arm 3a, a third relay arm 7a is rotatably mounted.
The first relay arm 9a and the second relay arm are attached to the third relay arm 7a.
11a is rotatably mounted. The first relay arm 9a has a slide gear
Slidable on the first guide base guide groove 47a provided on the guide rail 20a
Is attached to the first guide base 13a. 1st guide base
A first guide roller 17a and an inclined guide 21 are attached to 13a. The second relay arm 11a has a second arm provided on the slide guide rail 20a.
Second guide base 15a slidably disposed in the guide base guide groove 49a
Is attached. A second guide roller 19a is provided on the second guide base 15a.
Is attached. The slide guide rail 20b has the same structure, and the third relay arm
7b corresponds to the third relay arm 7a, and the first relay arm 9b corresponds to the first relay arm 9a.
And the second relay arm 11b corresponds to the second relay arm 11a, and the first guide
The base 13b corresponds to the first guide base 13a, and the second guide base 15b
The first guide roller 17b corresponds to the first guide roller 1 corresponding to the second guide base 15a.
7a, the second guide roller 19b corresponds to the second guide roller 19a,
The first guide base guide groove 47b corresponds to the first guide base guide groove 47a.
The second guide base guide groove 49b (see FIG. 8) corresponds to the second guide base guide groove 49a. The slide chassis 1 has slide chassis guide grooves 43a, 43b, 43c.
, 43d are provided. Slide chassis guide grooves 43a, 43b, 43c
, 43d have guide pins attached to the main chassis 51 described later.
So that the slide chassis 1 moves in the directions of arrows A and B
You can slide. On the slide chassis 1, a tension arm 23 rotates about a rotation shaft 25.
It is attached to the place. A guide 27 is attached to the tension arm 23.
Have been. In the slide chassis 1, a take-up guide arm 29 has a rotating shaft 31.
It is rotatably attached to the center. The take-up guide arm 29 has a
An equip-up guide 33 is attached. Further, a sub-pinch arm 39 is provided on the slide chassis 1.
Is mounted so as to be rotatable about a rotation shaft 37 provided at the center. Subpinchia
A pinch arm 35 is mounted on the arm 39 so as to be rotatable about a rotation shaft 37.
Have been. A pinch roller 167 is attached to the pinch arm 35.
. FIG. 3 shows a main chassis 51 of an embodiment of the magnetic recording / reproducing apparatus according to the present invention.
FIG. The main chassis 51 has a loading motor 93,
Gear 95, tension cam 97, mode detection gear 99, and main cam 53.
Is rotatably mounted. Reference numeral 55 denotes a rotation shaft of the main cam 53. B
The driving force of the loading motor 93 is controlled by the loading gear 95 and the tension cam 97.
Are transmitted to the main cam 53 via the mode detection gear 99. On the main chassis 51, a slide chassis driving lever 59 is provided with a rotating shaft 61.
It is attached so that it can rotate around. The slide chassis drive lever 59 is
, Disposed on the main cam 53 and provided on the slide chassis driving lever 59
The cam pin 63 is provided with a slide chassis driving groove provided in the main cam 53.
57. The groove 56 provided on the spring hook 41 on the slide chassis 1
Is a slide chassis drive pin provided on the slide chassis drive lever 59.
６５65 is fitted. The rotation of the main cam 53 causes the cam pin 63 to slide.
The id chassis driving lever 59 is driven in the directions of arrows C and D, thereby
The slide chassis 1 (see FIG. 2) slides in the directions of arrows A and B. A drum 77 is mounted on the main chassis 51. Drum 77
A first guide rail 79a and a second guide rail 79b are disposed on both sides of the first guide rail 79a.
You. Guide base guide grooves 81 and 83 are provided in the first guide rail 79a.
ing. Guide base guide grooves 85 and 87 are provided in the second guide rail 79b.
Have been. The guide base guide groove 81 is different from the second guide base guide groove 49 a (see FIG. 2).
2 and the guide base guide groove 83 is connected to the first guide base guide groove 47a (see FIG. 2).
The guide base guide 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 4.
9b (see FIG. 8). In the vicinity of the second guide rail 79b, a capstan centered on the capstan 76 is provided.
A motor 75 is attached. 89a is a first inclined guide, and 89b is a first inclined guide.
It is a two-incline guide. 91a is a first impedance roller, and 91b is a second impedance roller.
It is an impedance roller. Note that reference numeral 69 denotes a pinch operation lever, and reference numeral 71 denotes a pinch crimping lever. Also
, 101 is a loading lever, and the loading lever 101 is a loading lever.
This relates to driving of the arm 3a, 3b (see FIG. 2). Loading
A detailed description of the bar 101 will be given later. Next, the loading operation, that is, the first guide bases 13a and 13b shown in FIG.
The operation of the second guide bases 15a and 15b will be described with reference to FIGS.
And do it. FIG. 23 is a view for explaining loading of the magnetic recording / reproducing apparatus.
It is a system diagram. FIG. 4 shows an eject state. Cassette 113 (see FIG. 1; FIGS. 4 to 7)
Omits the cassette 113. ) Is placed on the slide chassis 1
. In the eject state, a guide group (a guide group) in contact with the non-magnetic surface side of the tape 105
The id 27 and the pinch roller 167 are housed in the cassette mouse 22.
The cassette 113 is detached in this state. In the eject state, the arm provided on the loading arm 3a, 3b
Loading protrusions 103 a and 103 b are provided on the loading lever 101.
It comes into contact with the swing lever bending portions 107a and 107b and is bent inward. Low
Since the ding lever 101 is made of a spring material, an expanding force is generated, and
Forces in the E and F directions are generated on the fruit loading lever 101. E direction
The force in the H direction acts on the loading arm 3a by the force. Also, the force in the F direction
Further, a force in the I direction acts on the loading arm 3b. When the loading arm 3 a receives a force in the H direction, the first guide base 1
3a, the second guide base 15a is drawn in the A direction. 1st guide base 1
3a, the second guide base 15a slides when sliding in the A direction.
Push rail 20a in direction A. As a result, the slide guide rail 20a is
Slide in the direction A against the guide guide biasing spring 8a and stop at a predetermined position
I do. The loading arm 3b also has an I-direction as in the case of the loading arm 3a.
By receiving the force, the first guide base 13b and the second guide base 15b are drawn in the direction A. The first guide base 13b and the second guide base 15b are A direction
When sliding in the direction, the slide guide rail 20b is also pushed in the A direction. This
The slide guide rail 20b is opposed to the slide guide rail biasing spring 8b.
It slides in the direction A and stops at a predetermined position. In this state, when the loading motor 93 rotates, the slide chassis
The drive lever 59 starts rotating in the direction of arrow D. This allows the slide chassis
1 starts moving in the direction of arrow B. Further, when the slide of the slide chassis 1 in the direction of arrow B proceeds, as shown in FIG.
The arm protrusions 103a and 103b and the loading lever bending portion 107a
, 107b are released, and then provided on the loading arms 3a, 3b.
The loading arm hooks 109a and 109b are connected to the loading lever 101.
Is engaged with the loading lever pins 111a and 111b. When the slide of the slide chassis 1 in the direction of arrow B further proceeds, the loading
The arms 3a and 3b start rotating in the directions of arrows J and K. Thereby, the first guide
The bases 13a, 13b and the second guide bases 15a, 15b move in the direction of arrow B.
start. The first guide bases 13 a and 13 b and the second guide bases 15 a and 15 b are indicated by arrows B.
Moving in the direction, opposes the slide guide rail biasing springs 8a, 8b.
No force, slide guide rails 20a and 20b have slide guide rails
By the biasing force of the biasing springs 8a, 8b, the first and second guide bases 13a, 13b,
It moves in the direction of arrow B together with 15a and 15b. 173 is a slide chassis
1 indicates the amount of movement from the eject state. 175 is a slide guide
The movement amount of the rule 20a is shown. When the sliding of the slide chassis 1 in the direction of arrow B further proceeds, as shown in FIG.
Then, 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. 1st guide base 1
3a, 13b and the second guide bases 15a, 15b are slide guide rails 20a.
, 20b, the slide guide rail 20a and the first guide rail
And the slide guide rail 20b and the second guide rail 79b are connected.
I have to do it. When the sliding of the slide chassis 1 in the direction of arrow B further proceeds, the first guide base
13a, 13b and the second guide bases 15a, 15b are first guide rails 79a.
, And the second guide rail 79b. When the sliding of the slide chassis 1 in the direction of arrow B further proceeds, as shown in FIG.
The first guide bases 13a and 13b and the second guide bases 15a and 15b
Before the slide of the id chassis 1 is completed, the position is set by a catcher pin (not shown).
It is decided. After the slide of the slide chassis 1 is completed, the loading arms 3a and 3b are lowered.
The bending lever 101 bends, resulting in forces in the directions of the arrows J and K, respectively.
Are biased, so that the first guide bases 13a and 13b and the second guide base 15a
Is in a state where a catcher pin (not shown) is pressed. Therefore, the guide
Position is more reliably determined. Further, regarding the unloading, the loading arm hooks 109 a and 109
b is engaged with the loading lever pins 111a and 111b,
Just slide the id chassis 1 in the A direction to perform unloading.
Can be. Since the spring hook 41 has a spring property, the unloading is performed.
In some cases, the slide chassis driving pin 65 is
The overstroke can be absorbed even if it moves over the stroke. Next, a tape path according to the present embodiment will be described with reference to FIG. Cassette 113
The tape 105 that has exited the supply side reel 115a is supplied to the guide 27, the first inclined guide 8
9a, the traveling plane is inclined, and the second guide roller 19a and the first
-Dance roller 91a, first guide roller 17a,
It is wound around 77. The tape 105 recorded and reproduced by the drum 77 is
Roller 17b, second impedance roller 91b, second guide roller 19b,
After passing through the second inclined guide 89b, the traveling plane is returned to the original position, and the capstan 76 and the
It is sandwiched between the ninch rollers 167 and is driven at a constant speed. Further, the tape 105 is wound around the take-up reel 115 b through the guide 33.
Taken. FIG. 19 is a plan view of the pinch operation lever 69. One of the pinch operation levers 69
A cam pin 139 is provided at one end, and a hole 141 is provided at the other end.
Have been. The pinch operation lever 69 has a pinch operation lever slide groove 1.
37 are provided. As shown in FIG. 11, the pinch operation lever 69 is arranged on the main chassis 51.
Have been. The main chassis 51 is provided with a pinch operation lever slide shaft 135.
The pinch operation lever slide groove 137 is attached to the pinch operation lever slide shaft.
135. As a result, the pinch operation lever 69 moves in the P direction and
You can slide freely on Q. The pinch operation lever 69 is located below the main cam 53.
Are located. Cam pin 13 provided at one end of pinch operation lever 69
9 is fitted in a pinch roller pressing groove 67 provided in the main cam 53.
You. FIG. 20 is a plan view of the pinch crimp lever 71 shown in FIG. Pinch crimp lever
The hole 71 is provided in the hole 71. The hole 145 is provided in the main chassis.
The pinch crimping lever 71 is inserted into a shaft (not shown)
It is rotatable around an axis. The pinch crimp lever 71 is provided with a shaft 143. The axis 143 is shown in FIG.
Is inserted into the hole 141 shown in FIG. Therefore, the slide of the pinch operation lever 69
The ride causes the pinch pressure lever 71 to rotate. FIG. 21 is a plan view of the sub-pinch arm 39 shown in FIG. Subpinchia
The hole 39 is provided in the arm 39. The hole 153 is provided in the slide shown in FIG.
It is fitted on a rotating shaft 37 provided on the id chassis 1. This allows the sub
The pinch arm 39 is rotatable about a rotation shaft 37. Sub pinch
A pivot pin 149 is provided on the drum 39. The rotation pin 149 is
20 through a long hole (not shown) provided in the chassis.
The contact surfaces 147a and 147b provided on the -71 can be contacted. At the time of loading, the slide chassis slides, but the rotation pin 149 (FIG. 21)
First) contact the contact surface 147a (see FIG. 20), and slide the slide chassis.
As the ride progresses, the rotation pin 149 comes into contact with the contact surface 147b and the sub-pinch arm 3
9 rotates. As shown in FIG. 11, a pinch arm 35 is arranged on the sub-pinch arm 39.
Is placed. As shown in FIG. 22, a hole 163 is provided in the pinch arm 35.
Have been. The hole 163 is fitted into the rotating shaft 37 shown in FIG. this
Therefore, the pinch arm 35 is rotatable around the rotation shaft 37. Pinchia
A hole 159 is provided in the arm 35, and a contact piece 161 is formed in the hole 159.
Is provided. The contact side 161 is provided on the sub-pinch arm 39 shown in FIG.
In the hole 151 formed. One end of the pinch crimp spring 171 shown in FIG. 11 is connected to the pinch arm shown in FIG.
It is attached to a shaft 165 provided at 35. Also, a pinch crimp spring 171
The other end is formed by a hook 155 provided on the sub-pinch arm 39 shown in FIG.
Attached to. As a result, the pinch arm 35 and the sub-pinch arm 39 are attracted to each other, but the contact piece 161 (see FIG. 22) has the hole 151 shown in FIG.
A predetermined state can be obtained because the contact surface 157 is in contact with one of the side surfaces of
You. Thus, when the sub-pinch arm 39 rotates, the pinch arm 35 also rotates.
I do. FIG. 10 shows a pinch arm 35, a sub-pinch arm 39 and a pinch crimp lever.
It is a schematic diagram which shows the positional relationship of 71 with the contact surface 147b. 169 is a slide
It is a long hole provided in the chassis 1. The operation of the pinch roller 167 is performed using FIG. 11 to FIG. 14 and FIG. FIG. 11 shows the ejected state as described above. FIG.
FIG. 12 is a diagram showing a state of members related to the operation of the pinch roller 167 among the members shown in FIG.
is there. FIG. 13 is a diagram showing the state at the time of completion of loading. FIG. 14 shows in FIG.
FIG. 9 is a diagram illustrating a state of members related to the operation of the pinch roller 167 among the members. Referring to FIGS. 11 and 12, when main cam 53 starts rotating in the S direction,
The slide chassis 1 starts moving in the B direction. Slide of slide chassis 1
Then, the rotating pin 149 comes into contact with the contact surface 147a, and the slide chassis 1 slides.
When the id further advances, the pinch arm 35 and the pinch arm 35
And the sub-pinch arm 39 rotates. When the rotation of the main cam 53 advances, a pin (not shown)
The operation lever 69 starts moving in the direction P, and the pinch pressure lever 71 rotates. this
Is, for example, a sensor that senses that the tape cannot be loaded at the end of winding.
Is operated by a tape rewinding mechanism (not shown) provided on the pinch pressure bonding lever 71.
In this state, the tape is slightly rewound. Next, switching between the mode standby state and the recording / reproducing mode will be described with reference to FIGS.
Do it. FIG. 15 is a diagram illustrating a mode standby state. FIG. 16 is a diagram illustrating a state of members related to the operation of the pinch roller 167 among the members illustrated in FIG.
FIG. 17 is a diagram illustrating the recording / reproducing mode. FIG. 18 shows the members shown in FIG.
FIG. 14 is a diagram illustrating a state of members related to the operation of the pinch roller 167. Referring to FIG. 15 and FIG. 16, when the main cam 53 is rotated in the S direction,
The operation lever 69 moves in the P direction, and the pinch pressure
The arrival lever 71 further rotates in the R direction. Pinch pressure lever 71 rotates in R direction
Then, the pinch arm 35 rotates in the T direction, and as shown in FIG.
The rubber 167 is pressed against the capstan 76. According to the present invention, the slide chassis is moved relatively to the main chassis.
The cam to be moved, the slide chassis drive lever and the pinch roller to the capstan
Since a link rod for crimping is provided, the drive mechanism of the slide chassis and pinch
It can also be used as a roller drive mechanism, with a slide chassis drive mechanism and pinch roll
There is no need to provide a separate drive mechanism for the camera. For this reason, the slide chassis drive
The number of parts used for the structure and the drive mechanism of the pinch roller can be reduced, and
It is possible to provide a magnetic recording / reproducing device that can be realized.

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 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. 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 one embodiment of the magnetic recording / reproducing apparatus according to the present invention. FIG. 10 shows a contact surface 1 of a pinch arm 35, a sub-pinch arm 39, and a pinch crimping lever.
It is a schematic diagram which shows the positional relationship with 47b. FIG. 11 shows a pinch roller 16 provided in an embodiment of the magnetic recording / reproducing apparatus according to the present invention.
7 is a plan view for explaining the operation of FIG. 12 is a diagram illustrating a state of members related to the operation of the pinch roller 167 among the members illustrated in FIG. FIG. 13 shows a pinch roller 16 provided in an embodiment of the magnetic recording / reproducing apparatus according to the present invention.
7 is a plan view for explaining the operation of FIG. 14 is a diagram illustrating a state of members related to the operation of the pinch roller 167 among the members illustrated in FIG. FIG. 15 is a plan view showing a mode standby state of an embodiment of the magnetic recording / reproducing apparatus according to the present invention. 16 is a diagram illustrating a state of members related to the operation of the pinch roller 167 among the members illustrated in FIG. FIG. 17 is a plan view showing a recording / reproducing mode of one embodiment of the magnetic recording / reproducing apparatus according to the present invention. 18 is a diagram showing a state of members related to the operation of the pinch roller 167 among the members shown in FIG. FIG. 19 is a plan view of a pinch operation lever provided in an embodiment of the magnetic recording / reproducing apparatus according to the present invention. FIG. 20 is a plan view of the pinch crimp lever shown in FIG. 3; FIG. 21 is a plan view of the sub-pinch arm shown in FIG. FIG. 22 is a plan view of the pinch arm 35 shown in FIG. FIG. 23 is a system diagram for explaining the operation of one embodiment of the magnetic recording / reproducing apparatus according to the present invention. FIG. 24 is a plan view of a slide chassis of a conventional magnetic recording / reproducing apparatus. FIG. 25 is a plan view of a main chassis of a conventional magnetic recording / reproducing apparatus. [Description of Signs] 1 Slide chassis 51 Main chassis 53 Main cam 69 Pinch operation lever 167 Pinch roller

Claims (1)

Claims: 1. A cam for moving a slide chassis relative to a main chassis, and a slide chassis drive connected to the cam and the slide chassis and driven by rotation of the cam. A lever, a link bar provided on the main chassis, connected to the cam, and driven by rotation of the cam, and a link bar provided on the slide chassis, for moving the link bar when the slide chassis moves. A magnetic recording / reproducing apparatus, comprising: a pinch roller that is driven by the movement of the link rod and is pressed against the capstan shaft while being linked.