JPS618763A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To increase the number of degrees of freedom of design to make a device simple and small-sized by moving a guide post with the front half part of a loading arm and transmitting the driving force to the rear half part through a limiter gear. CONSTITUTION:Post attaching bases 11 and 12 stuck axially to front half parts 13a and 14a of loading arms 13 and 14 of a loading mechanism are engaged with guide grooves 15 and 16 extending upward in directions opposite to each other to move an inclined and vertical post. When a sector gear 21, an intermediate gear 23, and limiter gears 24 and 25 meshing them are rotated through a cam gear by driving of a loading motor 18, rear half parts 13b and 14b of arms are rotated as one body. Thus, arms 13 and 14 are bent and stretched by the rotation in one direction of the sector gear 21 to set optionally the rotation center position of arms. Consequently, the number of degree of freedom of design is increased, and the arm rotating part is installed in a narrow space, and the device is made simple and small-sized.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic recording/reproducing apparatus, and more particularly to a loading mechanism of a magnetic recording/reproducing apparatus having a rotary head.

BACKGROUND TECHNOLOGY AND PROBLEMS Conventionally, so-called M-type loading is used as a loading mechanism for magnetic recording and reproducing devices having this type of rotary head.
Two rings are rotated in forward and reverse directions around the rotating head drum, and these rings and a guide post member are connected by a spring, and as the rings rotate, the guide post member rotates. A so-called loading ring method is used in which the loading ring is moved from the side along a guide groove formed in an approximately inverted V shape, or a pair of left and right loading arms are formed by linking the front and rear halves, and the first half of each arm is Attach a guide post to the lower part and connect the rear part to the limiter gear, directly mesh the gears to which both arms are connected, and rotate one of the limiter gears to connect both guide posts via both arms. A so-called loading arm system is used in which the arm is moved along a guide groove similar to the former.

However, the former has a structure in which two rings are arranged around the rotating head drum, and the latter has a large diameter gear because the rear ends of both loading arms are connected directly to each other. Therefore, both of them restrict the installation position and require a considerable amount of installation space, which is disadvantageous for small-sized devices.

OBJECTS OF THE INVENTION In view of the above, the present invention aims to reduce the size of a so-called M-type loading mechanism of a magnetic recording/reproducing apparatus having a rotary head by simplifying its structure and improving its degree of freedom in design.

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a magnetic recording and reproducing apparatus comprising a loading mechanism that moves approximately symmetrically between a rotating head drum, a supply side reel stand, and a take-up side reel stand. , the loading arms of the loading mechanism are formed by linking and connecting the front and rear parts, and the front part of each arm is formed along a guide groove formed in a substantially inverted V shape with respect to the rotating head drum. A movable guide post member is attached, and the rear half of each is coupled to a rotating body that is pivoted at an arbitrary interval to the substrate, and a limiter is coupled to the rotating body, and a driving intermediate rotating body is interposed between the two rotating bodies. , by rotationally driving the intermediate rotating body in one direction, both loading arms are bent and extended via both rotating bodies, and both guide post members are moved substantially simultaneously along both guide grooves to pull out the tape from the reel stand side; Loading is performed on a rotating head drum.

Embodiments Hereinafter, embodiments in which the present invention is applied to a magnetic recording/reproducing apparatus having a rotating head will be described with reference to the drawings.

(11 is a rotating head drum consisting of an upper drum (la) and a lower drum (1b). The lower drum (lb) is fixed to the base plate (2) at a predetermined angle and is rotated. In (la), the magnetic throat (3) force (which has been set aside for this rotating head drum t1) and the supply IJ
- A loading mechanism (6) is disposed between the reel stand (4) and the take-up reel stand (5).

This loading mechanism (6) will rotate when the loading is completed, which will be described later.The inclined post l-+71, (81 and the vertical post (91, Post installation is on stand (11)
, (12> and this post installation is a stand (11),
(12) Moved cell loading arm (13)
, (14), and this loading arm (1
3), (14) are the first half (13a), (
14a) and the rear half (13b), (14b) are rotatably linked together, and the front half (13a)
), (14a) to attach the post to the tip of the stand (11
).

(12) is pivoted so that it can rotate freely in the horizontal direction, and this post is attached to the base (11) and (12) to the board (2).
The reel stand (41) is placed between the rotating head drum (1).
, (5) A guide groove (15) formed in a substantially inverted V-shape from the side.
, (16) are movably engaged.

The post mounting is carried out when the reel stand (41) and (12) are driven by the loading arms (13) and (14) by the drive mechanism (17).
, (5) (1111 force 1) rotating head drum (moved in 11 direction and attached to tilted post (7)
, (81 and vertical post l-+91.

The tape T, which is hooked onto the tape, is loaded onto the rotating head drum (11) from the reel stand side.

The driving mechanism (17) of this loading mechanism (6) is constructed as follows. That is, the driving force of the rope ink motor (18) is transmitted to the four cam gears (20) that are pivotally attached to the sub-board (2') via the reduction gear mechanism (19), and the driving force is transmitted to the upper surface side of the cam gear (20). The cam m (20a) formed in a spiral shape is engaged with a pin (22) protruding from the peripheral edge of a sector gear (21) which is pivoted on the base plate (2), and the cam gear (20) As the rotation of the sector gear (
21) is rotated. This sector gear (21) meshes with the small diameter teeth (23a) of the intermediate gear (23), while the large diameter teeth (23b) of the intermediate gear (23) mesh with both limiter gears (24).
) and (25), and the respective gears (24
), (25) circumferential long hole (24a).

(25a) is a loading arm (13>) which is pivotally mounted coaxially with this gear, and the rear half (13b) of (14).

Protrusion (13b') protruding from (14b), (1
4b'), and connect this protrusion and gear (24), (
25) and the spring (26), (2
7), and as the sector gear (21) rotates, the loading arm rear half (13b), (
14b) as the gear (24).

(25) and is configured to rotate integrally with (25).

In this way the loading arm (13).

By rotating the rear parts (13b) and (14b) of (14), the post can be attached to the base (11),
(12) is the front half of the loading arm (13a)
, (14a) is pushed through the guide groove (15)
, (16), and is engaged with catchers (2B) and (29) disposed at the tips of the guide grooves.

In this state, each post (71, (81, T9), αΦ corresponds to both sides of the rotating head drum (1), that is, the inclined post located inside <71, (8) is parallel to the rotating head drum (11). It is in a sloping state.

In the loading mechanism (6) configured as described above, both posts are attached using guide grooves (15) so that the tables (11) and (12) can move smoothly at the same time.

The base end portion of (16) is asymmetrically formed. this is,
As shown in Figures 2 and 3, the guide groove (15
), the post is mounted in a smooth arc shape because force is applied to the base (11) from behind by the loading arm (13), but the other guide groove (16) At the proximal end, post mounting is done using a stand (
Since a force is applied to the loading arm (12) by the loading arm (14) in a lateral direction, the loading arm (12) is formed in a special shape so that it can move smoothly in this case as well.

That is, if the base end of the guide groove (16) is simply formed into an arc shape as shown in FIG. 6A, the loading arm (1
In 4) post mounting, the forward force Fx of the arm is small compared to the edge applied to the stand (12), and conversely, the frictional force py received from the guide groove (16) is large (μPx becomes a small value and it does not move). Therefore, as shown in Figure B, the guide groove (
Connect the rear half of the proximal end of 16) to the loading arm (14).
By forming the second half e (14a) in an arc shape centered on the rotation center, and forming the first half in an arc shape approximately symmetrical to the base end of one of the guide grooves (17), the post can be attached to the base ( 12) The forward force Fx of the arm relative to the force F applied to
is large, the frictional force F)l received from the guide groove (16) is small, and μFx becomes a large value and starts smoothly.After that, it slides in the same way as one loading arm (13), and both posts are attached. Platforms (11) and (12) will be moved smoothly as well.

In addition, a tension arm (31) is attached to one post on the negative side of the board (2) so that the tension arm (31) follows the movement of the base (11) by the elasticity of a spring (32). ) has a tension pin (33
) is planted, and one end is attached to the base (tension bell fixed to the substrate 11 and wound around the supply side reel stand (4))
The other end of (34) is attached via a rotating arm (35). Also, the tip of the tension arm (31)
The inclined portion (31a) is opposed to the rear end of the base (11) when the base (11) is moved to the tip and engaged with the cancher (28).

On the other hand, on the other side of the substrate (2), that is, on the capstan (30) side, a pinch roller arm (37) having a pinch roller (36) attached to its tip is attached by a shaft (38). A roller (3) is attached to the side through a protrusion (37a)
9) is pivotally mounted, and this roller (39) is connected to the board (1).
This arm (
40) A gear (41) meshed with a gear part (5a) formed on the circumferential surface of the winding-side reel stand (5) is pivotally supported at the other end of the other side part (40b).

The gear (41) of the arm (40) is always connected to the gear (41) of the take-up side reel stand (5) by the spring (42).
5a), and when the pinch roller arm (37) is not in operation, that is, when the pinch roller arm (37)
6) is in a state before being pressed against the capstan (30), the roller (39) is rotated against the biasing force of the spring (42) because it is in rolling contact with the inner edge of the side (40a), and the gear is rotated. (41) is separated from the take-up side reel stand (5). Then, the pinch roller arm (36) is pressed against the capstan (30).
7) is rotated, the roller (39) is separated from the arm (40), so the arm (40) is rotated and the gear (41) is rotated.
) is meshed with the gear portion (5a) of the take-up reel stand (5) and the drive gear (43), and the drive gear (43) has a pulley (45) to which driving force is transmitted from the drive motor (44).
are coaxially mounted, and at the same time when the pinch roller (36) is pressed against the capstan (30), the drive motor (4
4), the take-up side reel stand (5) is driven by the drive gear (
43), it is rotated via the gear (4I) and winds up the tape T at a constant speed.

Further, a rotating arm (46) is pivotally attached to the shaft (38) of the pinch roller arm (37) on the back side of the substrate (2).
This rotating arm (46) has a rotating piece (46a) protruding in a different direction from its shaft attachment part, and this rotating piece (46a)
) on the engagement lever (47) so as to be rotatable in only one direction, and a spring (48) is stretched between the engagement lever (47) and the rotating piece (46a). (47)
This causes the rotating piece (46a) to be biased in the direction in which the engaging piece (47a) engages. Further, a lever (49) in the shape of an angle is located between the arm (46) and the sector gear (21), and is rotatably pivoted to the board at its center, and the sector gear (21) is attached to the post. Installation is on the stand (11),
(12) into the guide groove (15).

One end (49a) of the lever (49) when rotating to move toward the tip of the lever (16), that is, during loading operation.
Rotate this lever by pressing the other end of this lever (
49b) to press the rotating arm (46) and rotate the pinch roller arm (37) coaxial with this arm to bring the pinch roller (36) close to the capstan (30).

That is, it is moved to the set-up state position.

In addition, on the front side of the board (1) there is a reel stand +41, (
51, a rotary arm (51) is pivotally attached to the rotary arm (51), and a gear (52) meshed with the gear part (5a) of the take-up reel stand (5) is attached to the tip of this arm. A gear (53) is coaxially attached to this gear (52) and located on the lower surface side of the substrate (1).
A gear (54) is interposed between the large-diameter gear (23b) of the intermediate gear (23), and the rotational force of the intermediate gear (23) is transmitted to the gear (52). When the intermediate gear (23) rotates so that the bases (11) and (12) move in the loading direction, the rotational force of the intermediate gear (23) is transmitted through the gear (54) to the gear ( 53) and (52), and since this rotation is in the direction of biting into the gear portion (5a) of the take-up reel stand (5), this rotational force causes the gear (52) to rotate around the shaft support of the rotating arm (51). The entire reel table (5) on the take-up side is rotated and meshed with the gear (5a) thereof, and the reel table (5) on the take-up side is fed at a constant speed and rotated in the opposite direction to fast forwarding for loading. At times, the tape T is sent out, so that unnecessary tension is not applied to the tape T.

An L-shaped mode lever (61) is pivotally attached to the sub-board (2') so as to be rotatable around its bent part, and the outer edge of one end (61a) is formed on the lower surface of the cam gear (20). The other end (61
b) is engaged with one end of a brake slider (62) disposed on the sub-board (2') so as to be slidable laterally.

A brake (
63), (64), (65) respectively operating recesses (62a), (62b), (62c)
The brake (63) is the main brake of the supply side reel stand (4), the brake (64) is the soft brake of the supply side reel stand (4), and the brake (65) is the main brake of the supply side reel stand (4).
is the main brake of the take-up side reel stand (5).

These brakes (63), (64), (
65) are all in the brake operating state during unloading and stopping, and during loading, the main brake (65) of the take-up reel stand (5) is off, and the main brake (63) of the supply side reel stand (4) is off. ) and the soft brake (64) are both on, and when the tape is being fed, all the brakes are off.

That is, as shown in FIGS. 7A to 7C, the mode lever (6
1) is not rotated when the small diameter part (20b1) of the cam (20b) of the cam gear (20) is in contact with its one end (61a), and the brake slider (62) is rotated in one direction by the spring (66). (in the direction opposite to arrow a in FIG. 7), each brake (63), (64).

(65) Rear end (63a), (64a),
(65a) are actuation recesses (62a), (62b
), (62c) are rotated and biased by each spring (67), (68), (69), and the brake shoes (63b), (64b) of the brakes (63), (64) are on the supply side. A brake (65) is attached to the drum part (4b) of the reel stand (4).
The brake shoes (65b) are pressed against the drum part (5b) of the take-up reel stand (5), respectively, so that both reel stands f4>
, 15) are in a stopped state (Fig. 7A).

Then, when the cam gear (20) is rotated to the loading state and the middle diameter part (20b2) of the cam (20b) comes into contact with one end (61a) of the mode lever (61),
The mode lever (61) is rotated a little, and the brake slider (62) is accordingly slid in the other direction (direction of arrow a) against the biasing force of the spring (66), so that the operating recess (62c) (65) Rear end (65a)
In other words, the rear end (65a) of the brake (65) rides on the high part and rotates against the biasing force of the spring (69), so that the brake shoe (65b) is attached to the take-up reel stand (5). This reel stand (
Only 5) is released from the stop (B in the same figure), and the tape is loaded.

After that, when the cam gear (20) is rotated to the tape running state and the large diameter part (20bs) of the cam (20b) comes into contact with one end (61a) of the mode lever (61), the mode lever (61) is rotated greatly, and the brake slider (62) is greatly slid in the direction of arrow a, so that the actuating recesses (62a) and (62b) engage the brake (63).
), the rear end (63a) of the soft brake (64).

(64a), that is, the brake (63) and soft brake (64) are removed from the rear end (63a), (64
a) rides on the high part and spring (67),
(68) is rotated against the biasing force of the brake shoe (
63b).

(64b) is the drum part (4b) of the supply side reel stand (4)
The stop of this reel stand (4) is also released (C in the figure), and the tape begins to run.

At this time, the main brake (
Since the operating recess (62a) corresponding to the soft brake (63) is narrower than the operating recess (62b) corresponding to the soft brake (64), the stop release operation of the main brake (63) is performed first and the soft brake (64) ), the stop release operation is performed later, and when the stop operation is performed, the soft brake (64) is operated first and the main brake (63) is operated later, so that the supply side reel stand (4) is suddenly is not stopped, so no unnecessary tension is applied to the tape. On the other hand, the brake (65) of the take-up reel stand (5) is finally stopped.

Furthermore, one end (71a) of a dog-legged lever (71) rotatably supported in the center is engaged with the other end of the brake slider (62) on the sub-board (2'). 8A), the other end of this lever (71) (71b
) is provided with a protruding pin (72), and this pin (72) has a
When the pinch roller arm (37) is rotated to the set-up state, that is, the rotation arm (46) is rotated to the sector gear (21).
) is rotated via the lever (49), the engagement lever (47) is also rotated in an engaged state via the engagement piece (47a), and the tip of this lever corresponds. When the lever (71) rotates by sliding the brake slider (62) in the direction of arrow a, that is, releasing the stop, this pin (72) comes into contact with the rear edge of the tip of the engagement lever (47). In Figure B), further rotation of the lever (71) pushes the engagement lever (47), so that the engagement lever (47) is separated from the rotation arm (46), but the rotation arm ( 46) is pulled and rotated via a spring (48), further rotates the pinch roller arm (37), and moves the pinch roller (36) to the capstan (3).
0). In other words, the tape is fed at a constant speed (
Figure C).

Further, a pin (73) is protruded from the tip of one end (61a) of the mode lever (61), and a pin (73) is provided to protrude from the tip of one end (61a) of the mode lever (61), and a pin (73) is provided to protrude from the tip of one end (61a) of the mode lever (61). Window hole (7
4a), and the actuating plate (74) has gears (75) and (76) meshing with each other on the supporting plate (74').
It is pivoted through. A bell l-(78) is strung between one gear (75) and a gear (77) pivotally supported on the sub-board (2').
77) side is transmitted, and therefore the other gear (76) is also rotated at the same time in the opposite direction, and the gear (77) is a gear rotated by the drive motor (44). (79) are meshed to transmit the driving force of the motor (44).

Also, between the small diameter gear (75') of one gear (75) and the fast feed gear part (5c) of the take-up side reel stand (5), and between the small diameter gear (76') of the other gear (76) and the supply Gears (80) that are individually meshed with the rewinding gear portion (4c) of the side reel stand (4) are pivotally attached to the arm (81),
This arm (81) is pivotally supported by a compression coil spring or the like at the tip of a lever (82) which is pivotally supported on the sub-board (2') so as to be rotatable in the front-rear direction. This lever (82) is connected to an actuation plate (74) via a spring (83), and a protrusion (74a) formed on the front edge of the actuation plate (74) connects to a pin (82) protruding from the lever (82). 84). The free end of the arm (81), which is pivotally supported by the lever (82), is connected to the substantially V-shaped guide groove (85) formed on the sub-board (2').
) and is swung left and right along the guide groove (85) by the rearward sliding of the actuating plate (74), and the gear (80) is connected to the above-mentioned small diameter gear (75') and the take-up side reel stand. (5) between the gear part (5C) or the other small diameter gear (76')
The reel (5) or
4) will transmit the rotational force to. In addition, the operating plate 7
4) is moved forward when the mode lever (61) is in the stopped state, the protrusion (74a) moves the lever (8)
The free end of the arm (81) is positioned at the top of the above-mentioned guide groove (85), and the lever (82) is kept rotating forward by contacting the pin (84) of the gear (80). )
are both reel stands (41, +51 gear part (4c),
(5c) (see FIG. 9A). A locking piece (86) is pivotally attached to the negative side of the actuation plate (74) so as to be rotatable in the lateral direction, and is always held in a vertical position by a spring (87). Section (86a)
When the actuating plate (74) is in the lowered state, the sub-board (2')
The actuating plate (74) is held in a backward moving state by being engaged with the tip pin (89) of the negative half (88a) of the strike lever (88) pivoted at the center of the actuating plate (74). (See figure B).

That is, the adsorbent (90) is attached to the end of the other half (88b) of the stopper lever (88) and faces the plunger (91) fixed to the sub-board (2'). When the power is turned on, the stopper lever (8
B) is fixed, so there is a locking piece (
The locking protrusion (86a) of the actuating plate (74) is locked, and the locking protrusion (86a) of the actuating plate (74
) is kept moving backwards.

In this operation, when the plunger (91) is de-energized, the stopper lever (88) is rotatable, so the actuating plate (
74) is moved rearward with rotation of the mode lever (61) while the locking piece (86) remains vertical without rotation. The locking protrusion (86a) of the locking piece (86)
) passes over the tip pin (89) of the stopper lever (88) and when the current is applied during the plunge (91), the stopper lever (88) is fixed and the locking piece (
The locking protrusion (86a) of 86) is caught, and the actuating plate (74)
is locked in the rear position. And this actuating plate (7
4), the lever (82) is also pulled by the spring (84) and rotated rearward, and the arm that is pivotally supported by the lever (82) with the required load. (81) moves rearward so as to rotate around the shaft support of the lever (82), so it moves along the -blade side (85a) of the F-shaped guide groove (85), that is, on the winding side. The gear (80) is swung in the direction of the reel stand (5) (the state shown by the solid line B in the figure), and the gear (80) is moved toward the gear part (5) of the reel stand (5) on the take-up side.
c) and one of the small diameter gears (75'), and the driving force of the drive motor (44) is transmitted to the take-up side reel stand (5). At this time, the brake slider (62) is slid by the rotation of the mode lever (61), and the reel stand (41, +
51 brakes (63), (64), (6
5) has been released, so fast forwarding of the tape, etc. is performed.

When the plunger (91) is de-energized in this state, the stopper lever (88) becomes rotatable, the actuating plate (74) is released and returns to its original position, and the gear (80) is connected to the take-up reel stand (5). The gear part (5c) moves away from the tape feed mode, and the tape feed mode stops. In this case, the mode reader (61
) has been restored, so both reel stands f41 and (51
The brakes are applied and the entire vehicle comes to a stop.

On the other hand, in the rewind mode, the plunger (91) is energized and the same operation as in the tape feed mode described above is performed.

In this case, since the plunger (91) is energized,
The stopper lever (88) is fixed, and when the actuating plate (74) is slid rearward in this state, the locking piece (86)
The locking protrusion (86a) contacts the tip pin (89) of the stopper lever (88), so that the locking piece (86) resists the biasing force of the spring (87) and moves against the actuating plate (74). A pin (
92) and presses this arm (80) toward the supply side reel stand (4) to release the other side groove part (82) of the guide groove (82).
85b) (double-dotted chain line in B), and mesh the gear (80) with the other small diameter gear (76') and the gear part (4c) of the supply side reel stand (4), and Reel stand (
4), the driving force of the drive motor (44) is transmitted to rewind and rotate the supply side reel stand (4). In this case as well, the actuating plate (7
4) is locked when the locking protrusion (86a) of the locking piece (86) engages with the tip pin (89) of the stopper lever (88) in a fixed state, and the supply side reel stand (4) is locked.
The rewinding rotation of is continued.

In addition, in the tape constant-speed feeding mode, the mode lever (61) is largely rotated by the cam (20b) of the cam gear (20), so that the actuating plate (74) is slid to the rearmost position, and at this time the arm (81) is the guide groove (85)
The gear (80) that is engaged with the rear end and is pivotally supported at the tip of the actuating plate (74) because it does not follow the sliding movement of the actuating plate (74) is the gear (4c) of the reel stand (41, (5)).

(5c) and the gears (75) and (76), and the driving force is not transmitted to the reel stand +41 and (5), that is, it acts as a load in the constant speed feed rotation of the reel stand +41 and (51). No. Also, the sub board (
2') has a rotary lever (93) pivoted on the mode lever (61) side, and is constantly engaged by the biasing force of a spring (95) with a pin (94) protruding from the mode lever (61). This rotating lever (93)
A pin (96) is protruding from the tip of the pin (96).
) is the guide hole (97) provided in the board (2).
) and is opposed to the outer edge side of the tension arm (31). When the mode lever (61) rotates, it is pressed and rotated via the pin (94).
6) is moved to the outer end of the guide elongated hole (97), and as the mode lever (61) returns to rotation, it is returned to rotation by the biasing force of the spring (95), and at this time, the pin (96) By pressing the outer edge of the tension arm (31) and rotating the tension arm (31), the tip of the tension arm (31) is attached to the post so as to release the engagement with the base (II). That is, as the tension arm (31) is rotated by the pin (96), the tip of the tension arm (31) is positioned behind the base (11) when the post is attached; When (11) is moved in the return direction, it is pushed and rotated back against the biasing force of the spring (32).

A magnetic recording/reproducing device having a rotating magnetic head configured as described above is simple in configuration and easy to operate because the rotation of a single cam gear loads the tape onto the rotating head drum and switches between various operation modes. is also extremely good. Note that in the above configuration, friction rolling wheels may be used instead of each gear.

Effects of the Invention As described above, the magnetic recording and reproducing device having a rotary head according to the present invention is formed by linking and connecting a pair of left and right loading arms of a loading mechanism at the front and rear parts, and a guide post member is attached to the front half of both arms. The second half of the loading arm is attached to the board, and the limiter is connected to a rotating body that is pivoted at an arbitrary interval on the board, and a driving intermediate rotating body is interposed between these two rotating bodies, so that the center of rotation of both loading arms The ability to set the position at any position without being constrained by having it symmetrically with respect to the rotating head drum improves the degree of freedom in design, and also simplifies the configuration, making it easier to rotate the loading arm. The device can be installed in a product even in a small space, and the effect is great when applied to a magnetic recording/reproducing device having a small rotary head.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an example of a rotary head type magnetic recording/reproducing device according to the present invention, FIG. 2 is a plan view of the device in a tape loading state, and FIG. 3 is a bottom view of the device on the main board side. FIG. 4 is a top view of the sub-board side of the same device, FIG. 5 is a top view with the gear member omitted from FIG. 4, FIG. 6 is a top view of a portion used to explain the loading guide groove, and FIG. 7A . B and C are plan views for explaining the operation of the brake mechanism, FIGS. 8A, B, and C are plan views for explaining the operation of the pinch roller mechanism, and FIGS. 9A, B, and C are the reel table rotation mechanism. FIG. In the figure, (1) is the rotating head drum, ■) is the substrate, (2')
is the sub-board, (4) is the supply side reel stand, (5) is the take-up side reel stand, (6) is the loading mechanism, (?), T
e3 is the inclined post, (9), αω is the vertical post, (11
), (12) is for post mounting, (13),
(14) is the loading arm, (13a),
(14a) is the first half, (13b). (14b) is the rear half, (15) and (16) are the guide grooves, (20) is the cam gear, (2I) is the sector gear, (2
3) is an intermediate gear, and (24) and (25) are mink gears. e Collapsed Agent Sada Ito, 2. ．． 1.1.・'', -;+・- Figure 5 Figure 6-] Fu

Claims (1)

[Claims] In a magnetic recording/reproducing device comprising a loading mechanism that moves approximately symmetrically between a rotating head drum, a supply side reel stand, and a take-up side reel stand, both loading arms of the loading mechanism are arranged in a front half and a rear half. formed by link engagement, and in the respective front half portions of both the arms;
A guide post member movable along a guide groove formed in an approximately inverted V-shape is attached to the rotating head drum, and the rear half of each member is attached to a rotating body that is pivoted to the base plate at an arbitrary interval. A driving intermediate rotating body is interposed between the two rotating bodies, and the loading arms are bent and extended via the two rotating bodies by rotational driving of the intermediate rotating body in one direction, and both the guides are coupled to each other by a limiter. A magnetic recording/reproducing device characterized in that the post member is moved substantially simultaneously along both of the guide grooves.