JPH05785B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is for winding a tape drawn from a tape cassette onto a tape guide drum containing a built-in transducer, such as a video tape recorder or a rotary head type digital audio tape recorder. This relates to a recording and reproducing device that records or reproduces signals by rotating and running the device.

Conventional technology In recent years, video tape recorders (VTRs) have become more popular as devices of this type, but there are also
When considering the use of a mobile device outdoors, issues remain not only in its weight but also in the size of the device itself.

However, the size of the mechanism in this type of device depends on the diameter of the tape guide drum and the tape winding means that rotates around it, due to the device principle of pulling out the tape from the tape cassette and winding it around the tape guide drum. Its basic planar dimensions are determined by three factors: the rotation range of the tape cassette, and the size of the tape cassette used. For example, No. 11 schematically shows an example of "U loading" adopted in a Beta system VTR.
To explain using a diagram, as shown in Figure 11,
The tape guide drum 101 is a tape cassette 10
2 at a predetermined position. After that, the tape 10 stretched on the front surface of the tape cassette 102
3' is the opening 10 provided in the tape cassette 102.
4 and is pulled out by the post 105 inserted into the tube. That is, the loading ring 106 on which the post 105 is erected rotates in the direction of the arrow 107, and as the loading ring 106 rotates, the tape 103 is pulled out to form a tape bus of the tape 103. In this case, in addition to the distance between the tape cassette 102 and tape guide drum 101, even if they are designed to be close to each other, the rotation range of the post 105 and loading ring 106, which are the tape winding means, will be limited. A fixed amount is always required, which places a large limit on the miniaturization of the entire device including the casing (not shown) that encloses the entire mechanism.

In this way, even if the tape guide drum and tape cassette are designed to be located closer to each other, the tape winding system, which consists of a post that rotates around the tape guide drum and winds the tape, will not work. A rotation range of the rotation means is required, and the dimensions including this amount become the dimensions of the entire device enclosed in the casing.

On the other hand, it has a tape winding means that rotates around the tape guide drum and winds the tape pulled out from the tape cassette around the tape guide drum, and after the tape winding means has rotated by a predetermined angle,
In order to pull out the tape from the tape cassette, in addition to this operation, the tape winding means may be inserted into the rotation locus of the tape winding means or an entry member that is linked to the housing. It is conceivable that the tape guide drum may also be moved into the opening of the tape cassette into which the rotating means is inserted, thereby reducing the size of the entire apparatus including the casing.

Problems to be Solved by the Invention In order to realize these, it is necessary to at least move the tape guide drum relative to the drum mounting section on which the tape guide drum is mounted and the casing section that mainly covers the drum mounting section. It is also necessary to allow relative movement between the casing section and the casing section that primarily covers the cassette mounting section on which the cassette is placed. Furthermore, if the tape guide drum is to be inserted into the opening of the tape cassette, it is also necessary to cause relative movement between the drum mounting section and the cassette mounting section. In this way, when multiple relative movements are performed at the same time while maintaining a predetermined relative position, the load fluctuates due to dimensional errors in the direction of movement during the movement process, making smooth movement extremely difficult. The problem was that it became impossible. This is a particularly serious problem when the housing section and the mounting section, which are long in the direction perpendicular to the direction of movement, are simultaneously moved relative to each other.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a cassette mounting section for mounting a tape cassette, a drum mounting section for mounting a tape guide drum, a cassette mounting section for mounting a tape cassette, and a drum mounting section for mounting a tape guide drum. a tape cassette mounting section guide means for guiding the tape cassette in the direction of approach and separation from the tape cassette mounting section; a first housing section provided corresponding to the cassette mounting section and fixed to the cassette mounting section; and the drum. A second casing section provided corresponding to the drum mounting section and configured to be able to change its relative position with the drum mounting section, and the first casing section and the second casing section are as described above. The cassette guide means guides the cassettes toward and away from each other in substantially the same direction as the guiding direction of the cassette guide means, and the first casing part and completes the approaching movement of the second casing part, and before the separating movement of the cassette mounting part and the drum mounting part, the separating action of the first casing part and the second casing part is performed. a driving force transmitting means for transmitting a driving force by engaging the drum mounting section and the cassette mounting section in a direction of approaching and separating the drum mounting section and the cassette mounting section, and a driving source for applying a driving force to the driving force transmission means. It is characterized by this.

Effect The present invention has the above-described configuration, and allows the drum mounting section and the cassette mounting section to approach and separate in a predetermined direction, and the first casing section and the second casing section provided correspondingly to each other. The approaching and separating movements between the parts in substantially the same direction as the predetermined direction are guided by respective guiding means. At the same time, changes in the load during the relative movement process due to deviations in the guiding direction or dimensional errors can also be caused by the difference between the drum or cassette mounting section and the first
Alternatively, movement in a direction perpendicular to this direction is permitted by connecting the second housing portions through a driving force transmission means that engages and transmits driving force in the approaching and separating directions. This makes it possible to achieve smooth dimensional changes in the entire device, thereby making it possible to downsize the entire device.

Embodiment Hereinafter, a first embodiment of the present invention will be described in detail using the drawings.

2 to 4 show a tape cassette used in a recording/reproducing apparatus according to an embodiment of the present invention. FIG. 2 is a perspective view seen from above, and the tape 4 contained in the tape cassette 1 has both ends attached to a pair of supply and take-up reels 2 and 3 (see FIG. 3).
The tape cassette 1 is secured to the tape cassette 1 and wound around the tape cassette 1, and is further stretched on the front side by a pair of cassette posts 8 of the tape cassette 1, as shown by the dashed line in FIG. The tape 4' stretched on the front side is the tape cassette 1.
When not in use, they are covered by a front cover 5 and a back cover 6 which rotate from the front and back sides, respectively. Figure 3 shows the tape cassette 1 shown in Figure 2.
This is a perspective view of the tape cassette 1 turned upside down by 180 degrees, and an opening is opened in the lower surface 1' of the tape cassette 1 so that a post or the like can be inserted inside the tape 4' stretched on the front surface and the tape 4' can be pulled out from the tape cassette 1. A section 7 is provided.
When the tape cassette 1 is used in the apparatus of this embodiment, the tape cassette 1 is installed in the apparatus, and the side surface 5' of the front cover 5 is opened by the operation of attaching the tape cassette 1 to the apparatus.
A lid opening means (not shown) that contacts the front lid 5 and rotates the front lid 5 opens the front lid 5 as shown in a side sectional view in FIG. Note that the back cover 6 is pivotally supported by a fulcrum support part 5'' provided in a part of the front cover 5, and
One end of the tape cassette 1 is guided by a cam guide groove 7'' provided in the side surfaces 7' on both sides of the opening 7 of the tape cassette 1, and the tape 4' is rotated. The front cover 5 and the back cover 6 are opened along a predetermined trajectory shown by the dashed line in FIG. 4 without contacting each other.As shown in FIG. The entire surface is opened to the corresponding height, and a post, etc. (not shown) or a tape guide drum 9, which will be described later, is installed.
This forms a space for entry into the opening 7 (see FIG. 6). Next, the basic operation of an embodiment using this tape cassette 1 will be explained with reference to FIGS. 5 and 6. FIG. 5 is a plan view schematically showing the state in which the tape cassette 1 is installed in the apparatus. That is, when the front cover 5 and the back cover 6 are opened in the state shown in FIG. Tension post 1
0, S2 post 12, T1 post 13, T2 post 1
4, T3 post 15, T4 post 16, T5 post 1
7. The T7 post 19 and capstan 21 are inserted. On the other hand, the tape 4' stretched on the front
On the side facing the opening 7, a tape guide drum 9, an S1 post 11, a T6 post 18,
and a pinch roller 20 are located.

A first housing section 22 corresponding to a cassette board 24 (see FIG. 1), which is a cassette mounting section on which the tape cassette 1 is mounted, and a drum mounting section on which the tape guide drum 9 is mounted. A second housing portion 23 corresponding to a certain drum board 25 (see FIG. 1)
and are located at a distance of A on the diagram from each other. After this, tension post 10, S1 post 11, S2
Post 12, T6 post 18, T7 post 19 and pinch roller 20 are respectively indicated by arrows 10',
It starts moving in the directions 11', 12', 18', 19', and 20' to the positions indicated by the dashed lines in FIG. 5, respectively. At the same time, the tape guide drum 9 also
T1, T2, and T3 posts 1 move in the direction of arrow 9' and rotate around the tape guide drum 9, and are the main tape winding means for pulling out the tape 4.
3, 14 and 15 rotate in the direction of arrow 13' while moving in the direction of arrow 9' together with the T5 and T6 posts 16 and 17. The tape guide drum 9 also enters the opening 7 beyond the stretching position of the tape 4 stretched on the front surface to the position shown by the dashed line shown in FIG. 2 Housing part 2
The relative positions of 2 and 23 remain at the position shown at A on the figure. When the tape guide drum 9 reaches the moving position shown by the dashed line in FIG. It rotates around the tape guide drum 9 in a space with the second housing part 23 while drawing a predetermined locus. Meanwhile T4 and T5 post 1
6 and 17 are stopped at predetermined rotational positions relative to the tape guide drum 9. As a result, each post 10 to 19 and the tape guide drum 9 lead from the supply reel 2 to the take-up reel 3. A tape path of the tape 4 shown by a solid line in FIG. 6 is formed. On the other hand, until the T1, T2, T3 posts 13, 14, 15, which are the main tape winding means, rotate around the tape guide drum 9 by a predetermined angle, at least the second housing part 23 is connected to the first housing part 22. The relative position of T1,
After the T2, T3 posts 13, 14, and 15 have completed their rotation, or have rotated and moved to a position that does not impede their rotation by a predetermined angle,
The relative position with the first housing part 22 is shortened by the amount shown by , and the tape approaches the tape guide drum 9 to a position where it enters the rotation locus of the T1, T2, T3 posts 13, 14, 15 around the tape guide drum 9. Moving. As a result, the size of the entire device can be reduced without being affected by the magnitude of the rotation locus of the tape winding means.

Next, the first
The basic operation in this embodiment will be explained in detail with reference to FIG. 1 and FIGS. 7 to 10 regarding specific configuration examples for realizing the basic operation.

The tension post, S2, T6, T7, posts 10, 12, 18, 19, and pinch roller 20 can be moved using a rotating lever (not shown).
Place it on top and move it by rotating it, or
Since the S1 post 11 can be easily realized using well-known conventional techniques, such as mounting and fixing it on a drum substrate (FIG. 8), only an embodiment of the main part related to the present invention will be described.

1 and 7 mainly show a cassette board 24 which is a cassette mounting section on which the tape cassette 1 is mounted.
, relative movement between the tape guide drum 9 and the drum substrate 25 which is a drum mounting section on which the tape guide drum 9 is mounted, and the first housing section 22 corresponding to the cassette mounting section and the second housing section corresponding to the drum mounting section. This shows an embodiment in which the relative movement with the body part 23 is performed with a predetermined timing difference, and FIG. 1 is an exploded perspective view of the component parts, and FIG. 7 is a plan view thereof. 1 and 7, the cassette board 24 includes, in addition to the tape cassette 1, components for driving the tape 4 built in the tape cassette 1, such as a supply reel stand 26, a take-up reel stand 27, and a capstan 21. A first casing section 22 on which is placed and mainly provided to cover these is coupled directly or indirectly. On the other hand, the drum board 25 mainly includes the tape guide drum 9 and T1 to T5, which will be described later.
Tape winding means constituted by the posts 13 to 17, the loading ring 59, etc. are placed thereon, and are movable relative to the second housing section 23 that mainly covers them. The first housing part 22 has a concave part 22', and the second housing part 23 has a convex part 23', the other of which is not shown, on both sides, and their engagement constitutes a housing guide means. , guides the relative movement direction of the first and second housing parts. Further, guide shafts 30 and 31 fixedly held by shaft holders 28 and 29 are respectively attached to the cassette board 24, and sliders 32 and 33 fixed to the drum board 25 are attached to the guide shafts 30 and 31, respectively.
is inserted and held slidably, and as a result, the cassette board 24 and drum board 25 are guided so as to be relatively movable in a fixed direction. Between the cassette board 24 and the drum board 25, there is a spur gear 35 that is integrated with the worm gear section 34, and a first cam gear 3 that meshes with the spur gear 35 and is provided with a first cam groove 37.
6, and a second cam groove 3 that meshes with the first cam gear 36.
9, a first partial gear 41 with engagement pins 40 and 42 set up in positions to engage with first cam grooves 37 and second cam grooves 39, respectively, and a second portion. The gears are each rotatably supported on the back surface of the cassette board 24. Furthermore, a loading rack 44 is fixed to the cassette board 24 so as to be positioned below the first cam gear 36, and a loading rack 44 is fixed to the drum board 24 so as to be located below the first cam gear 36.
A motor 47 is fixed at a position that does not overlap with the worm gear 5 in the thickness direction, and the motor 47 is provided with a worm 48 that meshes with the worm gear 34. Further, the first partial gear 41 meshes with the rack part of the slider 32 fixed to the drum board 25, and the second partial gear 43 has one end connected to the second housing part 25.
The housing rack 45 is fixed to a mounting portion 46 of the cassette board 24 and is engaged with a housing rack 45 located between the cassette board 24 and the drum board 25. Therefore, even if the second partial gear 43 and the housing rack 45 have a predetermined relative positional deviation in the tooth width direction and tooth height direction of the gear portion, the engagement of the housing rack 45 in the rack longitudinal direction is maintained. Ru. A loading rack 44 fixed to the cassette base plate 24 meshes with a pinion gear 49 that is pivotally supported on the drum base plate 25, and the rotation of the pinion gear 49 is controlled by gears 50 and 5 that are also integrally supported on the drum base plate 25.
1 to the tape guide drum 9 via the gear 52
The signal is transmitted by meshing with the loading gear 53 that rotates around the . The operation of the above configuration example will be explained mainly using FIG. 7. When the tape cassette 1 explained in FIG. 5 is mounted on the cassette board 24, the tape guide drum 9,
The cassette board 24, the drum board 25, the first casing section 22, and the second casing section are in relative positions indicated by solid lines. Thereafter, by supplying electric power to the motor 47, the worm 48 is rotated, and the first cam gear 36 is rotated counterclockwise via the worm wheel 34 and the spur gear 35. Accordingly, the first partial gear that engages with the first cam groove 37 via the engagement pin 40 rotates counterclockwise according to the cam shape of the first cam groove 37, and the rack portion of the slider 32 engages with the first partial gear. moves, and the drum board 25 integrated with the slider 32 performs a relative approaching operation between it and the cassette board 24 while being guided by the guide shafts 32 and 33. On the other hand, due to the close movement between the drum board 25 and the cassette board 24, a loading rack 44 fixed to the cassette board 24 and a pinion gear 49 pivotally supported on the drum board 25 are connected.
As a result, by rotating the loading gear 53 (FIG. 1), the winding operation of the tape 4 around the tape guide drum 9, which will be described later, can be performed between the drum substrate 25 and the cassette substrate 24. It becomes possible to simultaneously perform the proximity operation in parallel with the proximity operation. On the other hand, a second cam groove 39 formed on the second cam gear 38 meshing with the first cam gear 36
Even if the second cam gear 38 rotates clockwise in FIG. 7, the rotation radius of the cam groove remains constant at the beginning of the rotation, and T1, T2, and T3 post 13, 14, respectively
The second cam groove engaged with the second cam groove by the engagement pin 42 exceeds the rotation position 15 and rotates at least to a predetermined rotation position where the second casing portion 23 does not interfere with the rotation movement. The partial gear 43 is stopped without rotating. And T1, T2, T3 post 1
The second cam groove 39 rotates at a corresponding timing after the tape winding means including the tape winding means 3, 14, and 15 rotates to a predetermined rotation position including the final rotation position. Decreasing the rotation radius, rotating the second partial gear 43 counterclockwise in the figure, and moving the housing rack 45 that meshes with it;
As a result, the approaching operation between the first housing section 22 and the second housing section 23 is started after the approaching operation between the cassette board 24 and the drum board 25, and finally, the first partial gear 41, the slider 32, drum board 25,
Second partial gear 38, housing rack 45, second housing section 23, tape guide drum 9, pinion gear 4
9. The gears 50, 51, and 52 move to the positions indicated by the dashed lines in FIG. 7, respectively. Note that in the case where the start timing for entering the second housing portion 23 into the rotation locus of the tape winding means is set after the rotation of the tape winding means to the final rotation position, the second cam gear 38 is The rotation radius shape of the first cam groove is kept constant so that the first partial gear 41 is rotated by a predetermined angle and then stopped until the approaching and advancing operation of the second housing portion 23 is completed by completing the rotation. This can be achieved by rotating.

Next, an embodiment of the tape winding means placed on the drum substrate 25 will be described in detail with reference to FIGS. 8, 9, and 10. Figure 8 shows the drum board 25.
FIG. FIG. 9 is a side view during the winding operation, and FIG. 10 is a plan view when the winding operation is completed. In FIG. 8, a drum holder 54 holds the tape guide drum 9 at a predetermined angle to the drum substrate 25.
is fixed to the drum base plate 25 with a predetermined amount of inclination in a predetermined direction, and two guide rollers 55 are rotatably supported on the upper surface 54a of the drum holder 54. A roller plate 57, which can be moved slightly, rotatably holds one guide roller 58 and is fixed therein. These three guide rollers 55 and 58 are approximately diamond-shaped, and the tape guide drum 9 has a ninth guide roller.
As shown in the figure, the loading ring 59 is inclined at a predetermined angle and is engaged with the V-groove portion 59a of the loading ring 59 which is fixedly integrated with the loading gear 53, and the loading ring 59 and the loading gear are connected around the tape guide drum 9. 53 is rotatably held.

Note that the loading gear 53 is gear 5 as described above.
It meshes with the pinion gear 49 via pinions 2, 51, and 50, and rotates by relative movement with the loading rack 44.

Loading ring 59 is T1 post 14, T2
A main board 60 on which the posts 15 and T3 posts 16 are erected is rotatable about a board fulcrum pin 61 and is held in a clockwise biased state by a main boat spring 68. Furthermore, the loading ring 59 is located behind the main boat 60.
The sub-boat 62 with the T4 post 16 and the T5 post 17 is slidably and rotatably guided by the sub-boat guide 59b, and the sub-boat 62 is connected to the main boat 60 and the loading ring 59 by the sub-boat spring 63. is backed by the side. Although the loading ring 59 is inclined with respect to the drum base plate 25 as shown in FIG. 9, the height of the sub boat 62 can be simply changed by rotating the sub boat guide 59b without changing the angle of the sub boat 62 with respect to the drum base plate 25. The direction of inclination is set as follows. The sub-boat stopper 64 comes into contact with the tip end 62a of the sub-boat 62 during the loading process of winding the tape 4 onto the tape guide drum 9, and changes the height of the sub-boat 62 as the sub-boat guide 59b rotates. It is fixed to the drum base plate 25 so that it can be rotated and positioned while being changed. In addition, the main boat stopper 65 is used to position the main boat 60 together with the stopper plate 66.
Plant S1 post 11 and S2 post 12 (6th
S2 post guide 6 for guiding and positioning (see figure)
7 is fixed to the drum substrate 25.

Next, the operation of winding the tape 4 around the tape guide drum 9 with the above configuration will be explained. As described above, the loading ring 59 rotates together with the loading gear 53 due to the relative movement between the drum board 25 and the cassette board 24. At the beginning of rotation, the main boat 60 is rotated counterclockwise by the main boat spring 68, and the sub-boat 62 is also biased by the sub-boat spring 63 as it moves toward the main boat 60 on the sub-boat guide 59b. As shown in FIG. 8, the tape cassettes 1 begin to rotate while remaining close to each other within the opening 7,
Tape 4' stretched on the front is placed in tape cassette 1.
I will bring it out more. Then, the tip end 62a of the sub-boat 62 eventually reaches the sub-boat stopper 64.
The loading ring 59 is prevented from rotating integrally with the loading ring 59. As the loading 59 further rotates, the sub-boat guide 59a rotates against the sub-boat spring 63, changing the height as shown by the two-dot chain line in FIG. 9, and moving it to the position shown in FIG. and rotate. Meanwhile, T1, T2, and T3 are planted on the main boat 60.
The posts 13, 14, and 15 move through the positions indicated by the dashed lines in FIG.
The second housing part 23 has not started approaching the first housing part 22, and the loading ring 59 has not started moving closer to the first housing part 22.
The rotation of the T1, T2, and T3 posts 13, 14, and 15 is not hindered. When the loading ring 59 rotates further, the protrusion 60a (see FIG. 8) of the main boat 60 comes into contact with the right side surface 65b of the protrusion 65a provided at one end of the main boat stopper 65. After that, as the loading ring 59 rotates further, the main boat 60
The main boat spring 6 is centered around the boat fulcrum pin 61.
8, the protrusion 60a of the main boat 60 eventually moves from the right side 65b of the protrusion 65a of the main boat stopper 65 to the upper side 6.
5c (see Figure 10). As a result, the main boat 60 rotates on the loading ring 59, the T1 post 13 approaches the tape guide drum 9, and at the same time the main boat 60 is positioned by the main boat stopper 65 and the stopper plate 66. On the other hand, the movement of the S2 post 12 is not shown because it is easily possible with well-known technology.
For example, the S2 post 12, which is installed on a ring arm (not shown) that is linked to the proximity movement between the drum board 25 and the cassette board 24, is connected to the S2 post guide 6.
7 to the position shown in FIG. 10, and as a result, the winding of the tape 4 around the tape guide drum 9 is completed as shown in FIG. After this, or after the loading ring 59 has rotated by a predetermined angle together with the main boat 60 and has rotated to a position where the rotation is not obstructed, the second housing portion 23 is moved as shown in FIG. Loading ring 59 which is tape winding means, main boat 60, T1, T2, T3 posts 13, 14, 1
It enters into the rotation locus when the 5th grade rotates. Furthermore, it is obvious that when unwinding the tape 4 from the tape guide drum 9, the operation is the reverse of the above-mentioned operation. Board 25 and cassette board 2
4, the separating operation is performed. Note that the tape passes between the second housing section 23 and the tape guide drum 9.
The longitudinal direction of the tape 4 in the tape path stretched between the T3 post 15 and the T4 post 16 is set almost parallel to the second housing part 23, and the loading ring 59 is operated to wind the tape 4 times. The radius facing the second housing part at the rotational position where the rotation is almost completed is the main boat 60, T1, T2, T3 posts, 1
3, 14, and 15, and both of them are set to be sufficiently smaller than the rotation loci of the second housing portion 23 and the tape guide drum 9 (indicated by B in the upper part of FIG. 6).
As a result, this contributes to the miniaturization of the entire device.

In the above embodiment, the drive force is transmitted by engaging the second housing section 23 corresponding to the cassette mounting section and the drum mounting section in the directions of approaching and separating them. Even if it is provided between the first housing and the second housing, smooth relative movement of the entire device can be realized.

Effects of the Invention As described above, according to the present invention, even when the plurality of relative movable bodies of the drum mounting section and the cassette mounting section, as well as the first housing section and the second housing section, move simultaneously, it is extremely smooth. This allows the operation to be carried out with ease, and the overall size of the device can be reduced with high reliability.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of parts constituting main parts in an embodiment of the present invention, Figs. 2 to 4 are tape cassettes applied to the embodiment of the present invention, and Fig. 2 is a view from the top. FIG. 3 is a perspective view seen from the back, FIG. 4 is a side sectional view, FIGS. 5 and 6 are schematic plan views for explaining basic operations, and FIG.
The figure is a plan view of the main part, Fig. 8 is an exploded perspective view of parts constituting other main parts, Fig. 9 is a side view of the same, and Fig. 10
This figure is a plan view of the same, and FIG. 11 is a plan view showing a conventional example. 1...Tape cassette, 4...Tape, 7...
Opening, 8...cassette post, 9...tape guide drum, 13...T1 post, 14...T2 post, 15...T3 post, 22...first housing section,
23...Second housing part, 24...Cassette board, 2
5...Drum board.

Claims (1)

[Claims] 1. A cassette placement section for placing a tape cassette, a drum placement section for placing a tape guide drum, and a placement section for guiding the cassette placement section and the tape cassette placement section toward and away from each other. a guide means, a first housing section provided corresponding to the cassette mounting section and fixed to the cassette mounting section, and a first casing section provided corresponding to the drum mounting section and connected to the drum mounting section. The second part is configured such that its relative position can be changed.
a housing portion, a housing portion guiding means for guiding the first housing portion and the second housing portion toward and away from each other in substantially the same direction as the guiding direction of the placement portion guiding means; Delayed by the approaching movement between the loading section and the drum loading section, the approaching operation between the first housing section and the second housing section is completed, and the separating operation between the cassette loading section and the drum loading section is performed. Prior to this, the drum mounting section and the cassette mounting section are engaged in the approaching/separating direction to transmit a driving force so as to start a separating operation between the first casing section and the second casing section. What is claimed is: 1. A recording/reproducing apparatus comprising: a driving force transmitting means for transmitting a driving force; and a driving source for applying a driving force to the driving force transmitting means.