JP2000298900A - Recording/reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure contact bonding force required for the slit plate of a loading post in loading and at the same time achieve loading with less load. SOLUTION: In a guide pin projecting downward from the slit of a loading post that is provided so that it can travel between unload and load positions while being guided by the slit of a slit plate, the first and second links A and B of a sledding link where a tip part is connected and a base edge part is driven by a gear are bent in a shape near a connection part as in (a) and (b) [a]. A figure shows a state where the tip part of the link A has not been connected to the guide pin of the loading post. When the tip part is connected to the guide pin, deflection results, the deflection in loading becomes large, and that in unloading becomes small [a]. Therefore, by optimizing the bending (a) and (b), required contact bonding force can be secured and at the same time loading with less load is enabled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus capable of increasing a pressing force of a loading post and reducing a load at the time of loading.

[0002]

2. Description of the Related Art Conventionally, three types of cassettes C of S, M and L are used.
Recording devices that can handle (FIG. 10) are known. The cassette compartment in which the cassette of this apparatus is mounted on the reel base is configured as shown in FIGS. 10 and 11. When the cassette C is inserted into the cassette insertion slot provided with the cassette erroneous insertion prevention mechanism 7, the cassette is set in the cassette. After entering the holder 6, the cassette in and the type of the cassette are detected, and the drive motor 2a of the drive unit 2 and the drive motor (not shown) for driving the reel bases 9S and 9T shown in FIG. 9 are started. The final gear 2 of the gear train 2c is operated by the operation of the motor 2a.
The first moving plate having the rack 4a meshing with the d moves forward, and the gear 4b meshing with the rack 3a of the main body rotates,
The second moving plate 5 having the rack 5a meshing with the gear 4b moves rearward. The cassette holders 6c and 6d are fitted in the inverted L-shaped grooves 3c and 3d provided in the main body side wall 3 and the inclined grooves 5c and 5d of the second movable plate 5, respectively.
The cassette holder 6 is first guided in the inverted L-shaped grooves 3c and 3d by the movement of the moving plate 5, and firstly moves in the horizontal direction.
When the lid lock of the cassette C is opened and the cassette in and the type of the cassette are detected, the reel bases 9S and 9T configured as shown in FIG. 9 are guided by the guide 91 and moved to the positions corresponding to the L, S, and M cassettes. Is done. When the cassette holder 6 reaches the vertical portion of the inverted L-shaped groove 3c, 3d, it is guided by this vertical portion and descends.
Is opened, the cassette holder moving to the position corresponding to the L, S, M cassette is lowered, and the cassette is moved to the reel base 9.
S, 9T attached.

At this time, as shown in FIG. 1, the tape loading mechanisms (11 to 39, etc.) are in an unloaded state, and when a sensor detects that the cassette C has been set on the reel bases 9S, 9T, the loading mechanism is activated. The driving motor 11 is started, and the loading posts 28 and 29 are driven by threading links 25 and 26 driven by gears 17 and 18 of the loading mechanism, guided by the grooves 27a and 27b of the guide plate 27, and the tension regulator 40 and the tension The arm 38 has the gears 16 and 21
, And the tape T is loaded on the recording / reproducing rotary drum 10 as shown in FIG.

At the time of ejecting the cassette, the loading drive motor 11 is rotated in the reverse direction to return to the unloaded state (FIG. 1).

[0005] The threading links 25, 26
As shown in FIG. 5B, the first and second links A and B are respectively connected to each other.
In the vicinity a, the second link B is bent so as to increase the amount of deflection downward, and the loading posts 28 and 29 (FIG. 1) attached to the leading end during the loading when the threading link is extended are connected to the guide plate 2.
7 so that the loading posts 28 and 29 are stabilized.

Further, the tension regulator 40
As shown in FIG. 7 (b), a roller S3 rotatably provided on a toothless gear 31 driven by the gear 16 of the gear train of the loading mechanism, a window hole 32a, and a plate for suppressing clockwise rotation. Tension adjusting arm 3 having spring 32b
2, a pin 33b provided integrally with the toothless gear 31 and located in the window hole 32a of the arm 32 for regulating the swing width of the arm 32, and a tension adjustment range having a contact portion for receiving the leaf spring 32b at the tip. It is composed of a regulating arm 33.

[0007]

By the way, the threading link for moving the loading post of the above-mentioned loading mechanism moves the second link downward near the connecting portion of the first and second links so that the loading post is stabilized. The bending amount is set so that the bending amount required for crimping the loading post to the slit plate can be obtained. However, when this threading link is used, FIG.
As shown in (b), not only the load position but also a similar deflection occurs between the unload and load positions. For this reason, if it is attempted to increase the crimping force only by increasing the bending of the second link, the crimping force at the time of loading also increases, which undesirably increases the load of the entire loading operation.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a recording apparatus capable of securing a necessary crimping force at the time of loading and performing loading with a small load. A playback device is provided.

[0009]

According to the present invention, there is provided a loading post having a guide pin on a lower surface and a roller and an inclined guide on an upper surface, a slit plate for guiding the loading post between an unload position and a load position, A first link driven by a predetermined gear of a driving gear train of the loading mechanism, and a leading end connected to the first link is coupled to a guide pin of a loading post projecting downward from a slit of the slit plate. In a recording / reproducing apparatus provided with a loading mechanism having a threading link, the first and second links of the threading link are bent downward in the vicinity of their connection portions, respectively, so that the crimping force of the loading post during loading can be increased. And reduced the load during loading. To.

[0010]

Embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 9, the recording / reproducing apparatus includes a chassis 8 provided with reel stands 9S and 9T, a rotating drum 10, loading mechanisms (11 to 39, and the like), and the like.
And a cassette compartment 1 for mounting the L, M, S cassette C shown in FIG. 10 on a reel base.

Referring to FIGS. 10 and 11, the tape compartment 1 has a drive unit 2 including a drive motor 2a, a worm gear device 2b driven by the motor, and a gear train 2c connected to the worm gear in the upper part of the main body. And guide rollers 6c and 6 of the cassette holder 6 on the side wall 3 of the main body.
Guide grooves 3c and 3d, guide grooves 3e, and a rack 3a are provided in the shape of inverted L into which d is inserted.

A rack 4a driven by the final gear 2d of the gear train 2c, a gear 4b rotated by the rack 3a when driven, guide grooves 4c and 4d, and the guide grooves are provided outside the main body side wall 3. A first movable plate 4 having guide rollers 4f and 4g guided by 3e and 3c is provided.

A rack 5a driven by the gear 4b and guide rollers 6c, 6d of a cassette holder 6 inserted into the guide grooves are provided between the main body side wall 3 and the first movable plate 4. The second movable plate 5 having the inclined grooves 5c and 5d, and the projections 5e and 5f engaging with the upper groove guide grooves 4c and 4d is provided.

A cassette erroneous feeding prevention mechanism 7 is provided at a cassette insertion opening of the cassette compartment 1. The cassette mis-feeding prevention mechanism 7 includes a pair of members 7L connected so as to be pushed and rotated and lowered by the L cassette only when the L cassette is correctly inserted;
A pair of members 7 connected so as to be pushed and rotated and lowered by the M cassette only when the cassette is correctly inserted.
M and a common member 7S which is pushed down by a correctly inserted L, M, S cassette.

The cassette holder 6 comprises a holder body 6a and a cassette holding portion 6b. The cassette holding portion is operated by a lid 6e pushed up by the cassette inserted from the insertion slot and the cassette, and a micro switch for detecting the type of the cassette. (Not shown) is provided. A light shielding portion 6g for detecting the cassette in and the type of the cassette, a cassette in sensor including a sensor 6h, a lid unlocking mechanism 6f for opening the lid of the cassette, and a lid opening / closing mechanism 6i are provided in a lower rear portion of the holder body 6a. Have. When the cassette-in sensor detects the type of the cassette, the reel bases 9S, 9T movably provided along the drive motor 2a and the guides 91, 91 arranged in a U shape as shown in FIG. To the L, M and S positions corresponding to the L, M and S cassettes, a reel base driving motor (not shown) is started.

The start of the motor for driving the reel base moves the reel bases 9S and 9T to the position corresponding to the LMS cassette.

When the drive motor 2a is started, the cassette holder 6 is guided by the horizontal portions of the inverted L-shaped guide grooves 3c and 3d of the main body side wall 3 with the movement of the second movable plate 5, and moves. First, the lid lock release mechanism 6f is operated by the movement to release the lid lock of the cassette. The cassette holder 6 has the above-mentioned inverted LMS-shaped guide grooves 3c, 3d.
When it comes to the vertical portion of the second movable plate, it is pushed downward by the slopes of the inclined grooves 53 and 54 of the second movable plate, guided by the vertical portions of the guide grooves 3c and 3d, and descends in the middle thereof.
Pivots to open the lid of the cassette C, and then,
Reel stands 9S, 9 moved to positions corresponding to M, S cassettes
The cassette is set on T with the cassette holder 6 inserted.

When the cassette is set on the reel bases 9S and 9T, a sensor (not shown) detects this and starts the driving motor 11 (FIG. 1) of the loading mechanism in the loading direction.

Referring to FIG. 1, the loading mechanism includes a driving motor 11, a drive gear 12, a worm gear 13
And a gear train including gears 14 to 22 and a threading link 2 attached to gears 18 and 19 of the gear train.
5, 26 and threading links 25, 26 respectively
Driven by the slit 27 of the strip blade 27
a, 27b, and the loading post 28, 29 moved to the load position, and the tension regulator 3 integrally formed with the gear 31 driven by the gear 16.
0, a tape pull-out arm 38 attached to a gear 37 driven by the gear 21, and the like.

When the cassette C is set on the reel bases 9S and 9T by the cassette compartment 1, the roller S2 of the loading post 28, the guide pin S1, the roller T2 of the loading post 29, the guide pin T1 and the roller S2 of the tension regulator 30. The roller T3 of the tension arm 37 is located inside the exposed tape T of the cassette set on the reel bases 9S and 9T. These S1 to S3, T1 to T3 move to the loading position shown in FIG. 2 when the loading mechanism operates.

Referring to FIG. 7A, the tension regulator 30 is provided with a window hole 3 provided in a toothless gear 31 driven by the toothless gear 16 of the gear train of the loading mechanism.
2a, tension adjusting arm 32 having leaf spring 32b
And a spring contact portion provided integrally with the toothless gear 31 and receiving the leaf spring b, and a pin 33 located in the window hole 32a.
b and tension adjusting arm 3 having position regulating piece 33a
2 is constituted by a tension adjustment range regulating arm 33 for regulating the swing width.

One end of the tension adjusting range regulating arm 33 is fixed to the arm with screws or the like, and the other end passes inside the position regulating piece 33a and the end extends above the toothless gear 16 on the driving side. An extending spring 34 is provided. Further, the position regulating post 3 against which the position regulating piece 33a abuts when the tension regular 30 rotates to the prescribed position on the chassis.
9 are provided.

The loading-side missing gear 16 at the time of loading drives the missing gear 31 until the position regulating piece 33a of the tension adjusting range regulating arm 33 comes into contact with the position regulating pole 39, and then rotates until the loading is completed. Drive side gear 16
Is provided with a pin 16g with a flange that can push up the end of the spring 34 clockwise after driving the toothless gear 31. After the tension regulator 30 contacts the position regulating pole, the pin 16g To press the tension regulator 30 against the position regulating pole 39. Therefore, the tension regulator 30 adjusts the tape tension at a position pressed against the position regulating pole. Therefore, since the tension regulator 30 does not separate from the position regulating pole 39 during the tension adjustment, the tension can be adjusted as designed.

3 to 6, the loading posts 28 and 29 are provided with slits 27a of the slit plate 27, respectively.
It has guide pins 28a and 29a guided by 27b,
It is provided above the slit plate 27. The loading posts 28, 2
9 for moving threading link 27a, 27b
Is provided. This threading link 27a,
Reference numeral 27b denotes a cylindrical mounting portion Aa and gears 18 and 19 for mounting on the spindles of the gears 18 and 19 of the gear train, respectively.
Having a notch Ab that regulates the rotational position with respect to
, And one end is connected to the first link A, and the other end is the guide pin 28a, 2 of the loading post 28, 29.
9a, and a second link having a hole Ba and a bent portion Bb for connecting to the second link 9a.

Gears 18, 19 and threading link 2
A spring (not shown) that positions the first link A in the loading direction is provided between the first and second links 8 and 29, and the loading posts 28 and 29 are connected to the load positioning members 27c of the slit plate 27. , 27d. The first and second links A and B of the threading links 25 and 26 are bent in a U-shape at a and b near the connecting portion 0, respectively. The second link B is made of an elastic thin plate.

In FIG. 5 (a), the solid line shows the side shape of the threading link 27 before being connected to the loading post, and the dotted line shows the side shape of the threaded link connected to the loading post. As is apparent from this figure, the first and second links A and B are connected near their connecting portions a and b.
The bending d at the unloading position where the threading link contracts becomes smaller than the bending amount d at the loading position where the threading link is extended by bending at the portion.

Therefore, by optimizing the bending applied to the portions a and b in the vicinity of the connecting portion O of the first and second links A and B, it is possible to secure a necessary crimping force at the time of loading and to perform loading with a small load. It becomes possible.

[0028]

According to the present invention, the first and second links of the threading link for moving the loading post of the tape loading mechanism along the slits of the slit plate are respectively lowered. Due to the bending, the crimping force of the loading post to the slit plate at the time of loading when the threading link extends is increased, and the crimping force of the loading post to the slit plate at the time of unloading when the threading link is contracted is reduced. Therefore, the first and second
By optimizing the bending of the link, the required crimping force can be secured, and loading with less load can be performed.

[Brief description of the drawings]

FIG. 1 is a plan view showing a state when a loading mechanism is unloaded.

FIG. 2 is a plan view showing a state when a loading mechanism is loaded.

FIG. 3 is a plan view showing a state where a main part of the loading mechanism is unloaded.

FIG. 4 is a plan view showing a state where a main part of the loading mechanism is unloaded.

FIG. 5 is an explanatory view of the bending of a threading link.

FIG. 6 is an explanatory diagram of a configuration of a threading link.

FIG. 7 is a perspective view showing a tension regulator.

FIG. 8 is a perspective view showing a configuration on a chassis.

FIG. 9 is a plan view showing a configuration on a chassis.

FIG. 10 is a perspective view showing a cassette compartment.

FIG. 11 is an exploded perspective view of the cassette compartment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cassette compartment 2 ... Cassette compartment drive part 6 ... Cassette holder 7 ... Cassette mis-feeding prevention mechanism 8 ... Chassis 9 ... Reel base 91 ... Reel base guide 10 ... Rotary drum 11 ... Loading mechanism drive motor 12 ... Loading mechanism Drive gear 13 ... Worm gear part of loading mechanism 14-22 ... Gear train gear of loading mechanism 25, 26 ... Threading link of loading mechanism 27 ... Slit plate of loading mechanism 28, 29 ... Loading post 30 ... Tension regulator 37 ... Tension Arm 40: ME (manual eject mechanism) drive unit 51: ME gear 52: ME drive gear A, B: First and second arms of threading link a, b: Bending d: Deflection amount

Claims (1)

[Claims] 1. A loading post having a guide pin on a lower surface and a roller and an inclined guide on an upper surface, a slit plate for guiding the loading post between an unload position and a load position, and a predetermined gear train for driving a loading mechanism. The first link driven by the first gear and the first link
A recording / reproducing apparatus having a loading mechanism having a threading link coupled to a guide pin of a loading post having a leading end protruding downward from the slit of the slit plate and being connected to a link of the threading link. A recording / reproducing apparatus characterized in that each of the second links is bent downward in the vicinity of a connection portion thereof, so that the pressing force of the loading post at the time of loading can be increased and the load at the time of loading is reduced.