JPS5827582B2 - cassette tape recorder - Google Patents

Description

[Detailed description of the invention] The present invention relates to a cassette tape recorder.

Conventionally, once the cassette is inserted to a certain position in the cassette I/case, the cassette and cassette case are automatically sucked up to the advancing limit position by the action of the spring, and conversely, the cassette is pulled out of the cassette case by the reset action. A tape recorder that automatically escapes by the action of is known.

This device is an excellent technology that makes loading and unloading operations of cassettes easy and smooth.

However, conventional devices only automatically suck the cassette into the cassette case and automatically remove it from the cassette case using the action of a spring, and do not work in conjunction with the excellent automatic suction or automatic removal operation. Therefore, each mechanism of the entire device is not automatically brought into operation, or each mechanism of the entire device is not automatically brought into a non-operation state.

In other words, when the cassette is automatically sucked and positioned at an operating position for playback, etc., the head assembly etc. do not become operational at the same time, and when the cassette is automatically removed and positioned at a non-operating position, the head assembly, etc. did not become inactive at the same time.

For this reason, the wonderful advantages of automatic cassette suction and automatic ejecting operations have not been effectively utilized.

The present invention has been developed in view of the above-mentioned points, and its object is that when the cassette is automatically attracted by the action of a spring and positioned at the operating position, the head assembly, each idler roller, etc. are simultaneously moved to the operating position. conversely, when the cassette is automatically removed by the action of a spring and removed to the non-operating position, the head assembly, each idler roller, etc. can be moved to the non-operating position at the same time. The purpose of the present invention is to provide a device capable of automatically suctioning and removing a cassette, and simultaneously operating each mechanism of the device.

Thereby, it is an object of the present invention to provide a device that can effectively take advantage of the advantages of automatic suction and ejection of a cassette due to the action of a spring.

Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a chassis on which a side plate 2 is vertically disposed; 3 is a cassette that is supported by a rotating shaft 4 held on the side plate 2 of the chassis 1, has an operating cam floor 5, and is equipped with a spring retaining arm 6; The rotating plate that makes up the case,
Reference numeral 7 denotes a tension spring stretched between the spring latching arm 6 and the latching end 8 of the chassis 1, which constantly causes the rotating plate 3 constituting the cassette case to slide toward the side of the chassis 1, that is, to slide horizontally on the chassis 1. The possible sub-chassis 9 is energized in the side direction.

A cassette case insert plate 11 is connected to the distal end of the rotary plate 3 constituting the cassette case with an elastic plate 10 interposed therebetween.

At the bottom of the side plates 12 on both sides of the insert plate 11, guide edge plates 13 for guiding the cassette C protrude toward the inner side. A flat rectangular opening space defined by the parallel guide edge plates 13 becomes the insert portion 15 of the cassette C, and a cassette case 16 is constituted by both the insert 1 and the rotating plate 3.

Next, 17 is an eject lever guide plate held and attached between both ends 18 and 19 of the chassis 1, and a bell crank-shaped release lever 20 is supported by a rotation shaft 21 at the lower part of the eject lever guide plate 17. The locking end 22 of the release lever 20 and the eject lever guide plate 17
A tension spring 23 tensioned between the release lever 2
0 is always energized so that its one end 24 is in contact with the back of the rear plate 25 of the rotating plate 3.

The other end 26 is in contact with a contact piece 31 of a lock lever 30 supported by a rotation shaft 29 on the upper surface 28 of the eject lever 27 on the eject lever guide plate 17. A tension spring 34 stretched between the latching end 32 and the latching end 33 of the eject lever 27 is always biased so that the eject lever can be locked to a lock pin 35 vertically disposed on the eject lever guide plate 17.

An engaging portion 36 is formed on the lock lever 30 to ensure locking.

The eject lever 27 itself is constantly pulled forward in the F direction by a tension spring 38 stretched between the latch end 33 and the latch end 37 located at the front part of the eject lever guide plate 17.

The engagement between the lock lever 30 and the lock pin 35 resists the pull in the F direction.

As described above, when the lock lever 30 and the lock pin 35 are engaged and the eject lever 27 is in the advancing limit position against the tension spring 38, the entire device is in the non-operating position.

That is, the cam floor 5 of the rotating plate 3 is connected to the eject lever 2.
7, and pulls both the rotating plate 3 and the insert plate 11, that is, the cassette case 16, into the upward movement position against the downward rotational force of the spring 7. I keep it.

Further, a cam floor shaft 43' of the sub-chassis 9 is held in position at a cam ridge 43 of a cam hole 42 formed in the bottom plate 41 of the eject lever 27.

The sub-chassis 9 is attached to the chassis 1 by the tension spring 44.
Although the upper part is energized to horizontally slide upward in FIG. 1, the horizontally sliding movement is locked.

The head assembly 45 and idler rollers 46, 47 on the subchassis are therefore in a non-operative position.

Conversely, when the lock lever 30 and the lock pin 35 are disengaged, the eject lever 27 is pulled by the tension spring 38 and positioned at the retraction limit position, at which time the entire device is at the operating position.

That is, the cam floor 5 is connected to the side plate 3 of the eject lever 27.
9 is located in the cam valley 48 formed in the cassette case 1.
6 is rotated downward by a tension spring 7.

In the process of downward rotation of the cassette case 16, the rotation plate 3 and the insert plate 11 constituting the cassette case 16 are connected by the elastic plate 10, and the insert plate 11 is moved horizontally downward by the guide piece 49 when directly below it. Since it is guided to the sub-chassis 9, it moves horizontally downwards towards the sub-chassis 9.

When the cassette C is completely inserted into the cassette case 16, the reels so and si of the cassette C are fitted onto the reel shafts 52 and 53 on the apparatus side.

At the same time, the cam floor shaft 43' of the sub-chassis 9 is configured to be guided into the cam valley 54 of the cam hole 42, so that the sub-chassis 9 slides laterally on the chassis 1.

The head assembly 45 thus corresponds to the tape of cassette C, with each idler roller 46.47 moving closer to the capstan 55.56 with the tape inside.

After the device is positioned at the operating position as described above, a reset bar R is installed above the eject lever 27 and on the front side F of the device in order to return it to the non-operating position. .

Two elongated guide holes 57 and 58 are formed in the reset bar R along the longitudinal direction, and a guide pin 5 vertically provided on the eject lever guide plate 17 is inserted into one of the holes 57.
9 extends upward through the eject lever 21, and a guide pin 60, which is vertically provided on the eject lever 27, extends upward through the other hole 58.

A tension spring 62 is stretched between the distal end hooking end 61 of the reset bar R and one of the guide pins 59, and constantly urges the reset bar R in the direction of the front part F of the device.

As a result, the guide pins 59 and 60 are both in the guide hole 57.
It abuts the rear surfaces 63, 64 of 58.

When the eject lever 27 is located at the retraction limit and the device is in the operating position, one guide pin 60 is inserted into one guide hole 5.
When the reset lever R is pressed, the pressing force can be transmitted to the eject lever 27 via the front surface 65 of the guide hole 58 and the guide pin 60. The eject lever 27 can be slid to the advance limit position.

Next, the mechanism of automatic suction and automatic ejection of the cassette using a spring will be explained.

That is, a slit-shaped cassette guide slit I-A is formed in the rotating plate 3 constituting the cassette case 16 along the longitudinal direction.

The cassette guide slit A is formed into a progression limit stopper B that is divided near the rear plate 25 of the rotating plate 3, and a regression limit stopper D that is divided into two diagonally upward slopes on the other side. It is formed.

A cassette guide E is slidably fitted into the cassette guide slot l-A.

As shown in the side view of Fig. 3, the cassette guide E is connected to the main body G.
A stopper H is integrally and vertically installed at the front lower part of the body, and a claw body K is installed at the rear lower part.

The claw body is divided into a front claw part and a rear claw part M.

An edge N protrudes from the upper side of the main body.

Between the lower edge of edge N and the upper edge of claw body K and stopper H t
is defined as a guide part 0 for fitting into the guide slit A.

Therefore, the width of the guide portion 0 is such that it can be slidably fitted into the guide slit A.

The cassette guide E connects the stopper H to the rear plate 2 of the rotating plate 3.
It is slidably fitted into the guide slit A toward the sub-chassis 9 side.

As shown in FIG. 2, when the front end C' of the cassette C hits the stopper H, the stopper ■
(The distance between the nail and the nail body is determined.

On the other hand, the position of the rotating body 3 is closer to the reset lever R, and the rotating plate 3 is closer to the rear plate 25.
A rotating arm piece Q is rotatably supported on a rotating shaft P which is supported at a position of , and between the approximately central part of the rotating arm piece Q and the raised hook IE end S of the reset lever H. The connecting rod T is installed as a bridge, and the tip U of the rotating arm piece Q
A one-turn torsion spring W is hooked between the upper surface V of the cassette guide E and the upper surface V of the cassette guide E.

The torsion spring W is hung with the spring portion Y facing the reset bar H, and both one spring end W' and the other spring end W' have no play with respect to the cassette guide E and the rotating arm piece Q. It is latched.

As a result, when the device is not operating, that is, in the state shown in FIG. 1, the cassette guide E is at the retraction limit position due to the tension of the torsion spring W.

That is, the cassette guide E is at the retraction limit due to the bifurcated retraction limit stopper D.

At the retraction limit position, as described above, the position is set so that the rear claw part M of the claw body bites into the part of the reel 51 in front of the cassette C, and the cassette guide E is advanced. When the limit position is reached, the reels 50 and 51 of the cassette C that are attracted thereto are moved to the reel shaft 52.5 of each device.
3, the stroke of the cassette guide E is set along the id slit A.

A portion of the elastic plate 10 connecting the rotating plate 3 and the insert plate 11 that constitute the cassette case 16 is connected to the suppressing plate Z.
A push rod J is formed in front of the front stopper H of the cassette guide E, and is pushed into one end 24 of the release lever 20 through the through hole 25' of the rear plate 25. It is configured to fit.

In addition, A in the figure is a plunger, and if the plunger is operated alternately, either one of the idler rollers 46, 47 will move to the capstan 55, 56 depending on the selection of the alternate suction operation.
Place the cassette tape between the idler roller and capstan of the selected side.

Then, in response to the above selection, motor torque is transmitted to either side of the reel shaft 52 or 53.

Selected according to recording/playback or rewinding.

Based on the above-mentioned configuration, the operation will be explained focusing on the automatic suction of the cassette C and the automatic push-out operation of the cassette C.

The cassette C is placed in front of the insert portion 15 of the cassette case 16, and the cassette C is inserted into the cassette case 16 until its front end C' abuts against the stopper H of the cassette guide E.

During insertion, the front end C' of the cassette comes into contact with the front claw of the claw body, but since it is tapered, it inserts smoothly.

When it comes into contact with the stopper H, the rear claw part M of the claw body
is bitten into the reel 51 at the front of the cassette C.

Since the pressing plate Z elastically presses the cassette guide E from above, the above-mentioned biting is ensured.

Cassette C shown by the two-dot chain line in Figures 1 and 2
indicates the above state.

Further, the pointing arrow a in FIG. 4 indicates the stroke of the insert by the above-mentioned manual operation.

Next, the cassette C that has traveled the distance a pushes the cassette guide E via the stopper H due to its own inertia.

Since the pushed cassette guide E engages the reel 51 portion of the cassette C with the rear claw part M of the claw body, it advances along the guide slit l-A with the cassette C along with it.

In the advancing process, the torsion spring W is also accompanied.

That is, in FIG. 1, the spring portion Y of the torsion spring W is rotated clockwise.

Let g be the joint end of the cassette guide E of the torsion spring W,
On the other hand, assuming that the joint end of the rotating arm piece Q is g', when the above rotation progresses and the point g is located even slightly forward of the point g', the force acting on the point g of the spring part Y will be The direction is the direction in which the cassette guide E is to be advanced toward the advancement limit stopper B.

That is, the force of the spring portion Y tries to advance the cassette guide E with the force applied at point g'.

The situation in FIG. 5 shows this.

Therefore, due to the suction action of the torsion spring W, the cassette guide E automatically advances along the guide slit A with the cassette C accompanying it.

Automatic advancement is performed until the stopper H of the cassette guide E hits the advancement limit stopper B of the guide slit A.

At its advance limit, the reel 51 of the cassette C is attached to the reel shaft 53 of the device, and the other reel 50 is attached to the other reel shaft 52.
corresponds to each.

The above-mentioned automatic suction process is indicated by the number in FIG.

When the advancement limit is reached, the push rod j of the cassette guide E passes through the through hole 25' and presses one end 24 of the release lever 20, so the release lever 20 is rotated clockwise in FIG. and press the lock lever 30.

Due to this motion, the lock lever 30 similarly rotates clockwise and is disengaged from the lock pin 35.

Therefore, the eject lever 27 is pulled by the tension spring 38 and slides to the retraction limit position.

Therefore, the cam floor 5 of the rotating plate 3 is located in the cam valley 48, and the cassette case 16 consisting of the rotating plate 3 and the insert plate 11 is moved to the sub-chassis 9 side by the tension spring 7.
. . . That is, it rotates downward toward the reel shaft 52, 53 that protrudes through the sub-chassis 9.

As described above, since the insert plate 11 is joined by the elastic plate 10, the insert plate 11 and the cassette C housed therein are seated on the sub-chassis in a horizontal state.

That is, the reel shaft 53 of the device meshes with the reel 51 of the cassette C, and the other reel shaft 52 meshes with the other reel 50. In synchronization, the cam floor shaft 43 of the sub-chassis 9
' moves to the cam valley 54, the sub-chassis 9 slides sideways on the chassis 1 by the tension spring 44, the head assembly 45 approaches the tape in the cassette C, and the idler rollers 46 and 47 move towards the capstan 55.56. approach.

This ensures the operating state. One actuation of the plunger and the motor can immediately drive the device to record, playback, rewind, etc.

In order to automatically push out the cassette C set in this operating position and place the device in a non-operating state, the reset lever R can be pushed.

Since the eject lever 27 is located at the retraction limit and one guide pin 60 vertically provided on the eject lever 27 is in contact with the front surface 65 of one guide hole 58 of the reset lever R, the reset lever R is pushed. The pushing force is applied to the eject lever 27 via the front surface 65 and the guide pin 60.
, the eject lever 27 slides to its extension limit against the tension spring 38.

For this purpose, the cam floor 5 of the rotating plate 3 is guided onto the cam ridge 40, and the cassette case 16 that accommodates the cassette C is
At the same time, the cam floor shaft 43' of the sub-chassis 9 is guided to the cam crest 43, so that the sub-chassis 9 is returned to its original state...that is, the head assembly 45 and the idler rollers 46, 47 are moved upward. When separated from the tape side and at the advance limit, the lock lever 30 engages with the lock pin 35, rotates the release lever 20 counterclockwise, and one end 24 of the release lever 20 pushes the push rod J of the cassette guide E. do.

The above motions are performed in synchronization, and the next motion is also ensured in synchronization with them.

That is, when the reset lever R is pushed in, the pressing force is transmitted to the rotating arm piece Q via the connecting rod T, causing it to rotate clockwise.

The situation in FIG. 6 shows this. As is clear from the figure, the joint end g' of the rotating arm piece Q of the torsion spring W is
It advances in the advancing limit direction from the joint end g of the cassette guide.

Therefore, the direction of the force acting on point g of the spring portion Y of the torsion spring W is a direction that tends to advance the cassette guide E toward the retraction limit direction.

In other words, the force of the spring portion Y attempts to push back the cassette guide E with the force applied at point g'.

Since this motion and the above-mentioned pushing operation of the push rod j are synchronized, the cassette guide E quickly returns.

Therefore, the stopper H of the cassette guide E pushes the front end C' of the cassette C, so that the cassette C automatically slides out of the cassette case 16.

The automatic push-out process is shown at numeral f in FIG.

an upward motion of the rotating plate 3, that is, the cassette guide E;
Since the automatic return by the torsion spring W of the cassette guide E is synchronized, the cassette C does not get caught in the claw body of the cassette guide E.

When the upward motion of the rotary plate 3 is completed, the claw body K comes into contact with the upper surface between the front reel 51 of the cassette C and the front end C', and the friction causes the automatic fish-out operation of the cassette C. Braking is applied.

Therefore, the f stroke is pushed out and stopped at that position.

At this time, the reset bar R is returned by the tension spring 62.

As is clear from the above description, according to the present invention, when the cassette is automatically sucked up to the advancing limit position of the cassette case by the action of the spring and positioned at the operating position, the head assembly is moved into the cassette in conjunction with the movement. The entire mechanism can be brought into operation by contacting the tape and bringing each idler roller close to the capstan.

Therefore, a series of operations from loading the cassette to playback operations can be performed quickly and smoothly with one operation.

Conversely, when the cassette is removed from the cassette case by the action of the spring, the head assembly and each idler roller can be positioned in the non-operating position in conjunction with the action.

Therefore, operations from loading the cassette to stopping the apparatus can be performed quickly and smoothly with a single operation.

[Brief explanation of drawings]

The attached drawings show embodiments of the present invention, with FIG. 1 being a plan view in a non-operating state, FIG. 2 being a sectional view taken along the XX line in FIG. The figure is a side view of the cassette guide, Figure 4 is a diagram showing the stroke progression when setting and resetting the cassette C, and Figure 5 is a partial plan view for explaining the action of the torsion spring in the cassette suction stroke. ,
FIG. 6 is a partial plan view for explaining the action of the torsion spring during the cassette push-out process.

Claims (1)

[Claims] 1 A rotating plate 3 and its rotating plate 3 are attached to the side plate 2 of the chassis 1.
A cassette case 16 consisting of an insert plate 11 connected via an elastic plate 10 is attached to the reel shaft 5 on the chassis 1.
2. A guide slit A is formed in the rotating plate 3 which is rotatably supported while always being biased toward the 53 side and which constitutes the cassette case 16. A stopper H and a stopper H are formed in the guide slit A at the front lower part. The cassette guide E has a cassette guide E with a ramming rod J defined at its tip and a claw body K consisting of a front claw part and a rear claw part M at the rear lower part. The distal end is slidably arranged so as to correspond to the through hole 25' formed in the rotary plate 25, and the tip is placed on the rotary plate 3 on the rear plate 25 side of the rotary plate 3 and closer to the eject lever 27. A rotating arm piece Q is rotatably arranged with U facing the cassette guide E, and a spring portion Y is directed toward the reset lever H between the cassette guide E and the terminal U of the rotating arm piece Q. In this state, the torsion spring W is latched, a connecting rod T is bridged between the approximate center of the rotating arm piece Q and the latching end S of the reset lever H, and the above-mentioned cassette guide E is
The distance between the stopper H and the claw body is set to such a distance that the front reel 51 of the cassette C can be latched by the rear claw part M of the claw body, and the travel limit stroke of the cassette guide E is set to
Advance the cassette guide E while sucking the cassette C, and when the front end stopper H reaches its advancement limit, the cassette C
In a cassette tape recorder in which the reels 51 and 50 are set to correspond to reel shafts 53 and 52 on the device side, when the cassette guide E is located at the advance limit position, the lock lever 30 and the lock pin The release lever 20 for releasing the engagement of the lock lever 35 is arranged such that one end 24 thereof is brought into contact with the protruding position of the push rod J of the cassette guide E, and the other end 26 is brought into contact with the contact piece 31 of the lock lever 30. accomplished,
When the cassette L-C is inserted into the cassette case 16 and positioned at the advancing limit, the lock pin 35 and the lock lever 30 are disengaged through the operation of the release lever 20, and the cassette case 16 is inserted into the cassette case 16. Slide the eject lever 27 on the eject lever guide 17 mounted on the chassis 1 along with the lock lever 30 to the backward limit position, position the cam floor 5 of the rotary plate 3 in the cam valley 48, and remove the cassette. By moving the case 16 downward, each reel 50° 51 of the cassette C in the cassette case 16 is engaged with the reel shaft 52, 53 of the device, and the cam hole 42 formed in the eject lever 27 is moved back. The cam floor shaft 43' of the sub-chassis 9 is guided to the cam valley 54 of the sub-chassis 9, and the sub-chassis 9 is caused to slide horizontally by the tension spring 44, so that the head assembly 45 on the sub-chassis 9 corresponds to the tape in the cassette C. , by bringing each idler roller 46, 47 close to the capstan 55, 56 of the device, the device is put into an operating state, and conversely, when the eject lever 27 is in the retract limit, a pressing force can be transmitted to the eject lever 27. By determining the relationship and pressing the reset lever R arranged correspondingly to the eject lever 27, the eject lever 27 is moved to its advancing limit and the opening lever 30 and lock pin 35 are pressed.
The cam floor 5 of the rotary plate 3 is guided onto the cam ridge 40 to raise the cassette case 16 back to its original position, and the cam floor 43' of the sub-chassis 9 is moved into the cam hole. A cassette tape recorder in which the header assembly 45 on the sub-chassis 9 and the respective idler rollers 46, 4γ are guided by the cam ridges 43 of the sub-chassis 9 to return the device to a non-operating state.