JPH03178070A - Tape player - Google Patents

Abstract

PURPOSE:To obtain the tape player capable of miniaturizing its size and with superior operability by selectively forming a stop mode, a high speed traveling mode and a search mode under the state of positioning a head drum at the 2nd position and loading or ejecting a tape cassette under the state of positioning it at the 3rd position. CONSTITUTION:Under the state of positioning the head drum 21 at the 1st position, a recording and/or reproducing mode is formed, and under the state of positioning it at the 2nd position, the stop mode, the high speed traveling mode and the search mode are selectively formed, and under the state of positioning it at the 3rd position, the tape cassette is loaded or ejected, thus constituting the tape player in function. Consequently, the structure is simplified by eliminating the need of a tape loading mechanism, while the start-up of the search mode or the high speed traveling mode can be quickened without needing movement of the head drum 21 at the time of shifting the stop mode to the search mode or the high speed traveling mode. By this method, miniaturi zation of the tape player is feasible, while the tape player with superior operability can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The tape player of the present invention will be described in detail according to the following items.

A. Industrial field of application B1 Overview of the invention C6 Prior art 1 Problems to be solved by the invention E0 Means for solving the problems F. Examples [Figs. 1 to 19] a. Tape cassette b. Tape player b-1, overview b-2, cassette mounting part b-3, head drum support b-4, operating mechanism b-5, 111 work G1 Effects of the invention (A, industrial application field) The present invention Concerning a new tape player. Specifically, it is a tape player that winds a tape around the head drum by inserting a part of the head drum equipped with a rotating head into a tape cassette, and performs recording and/or playback in this state. It is an object of the present invention to provide a new tape player that has a simple winding mechanism, a quick start-up from a stop mode to a search mode, and excellent operability.

(B. Summary of the Invention) The tape player of the present invention has two positions: a first position where the head drum is deeper into the head drum insertion recess of the tape cassette than the tape spanning surface of the tape cassette; a second position slightly entering the recess;
A recording and/or reproducing mode is established with the head drum in the first position, and the head drum Stop mode in second position,
A high speed driving mode and a search mode are selectively formed,
By allowing the tape cassette to be loaded or unloaded while the head drum is in the third position,
This eliminates the need for a tape loading mechanism for pulling out the tape from the cassette and winding it around the head drum, simplifying the structure and making it possible to make it more compact. Since this is done in the same position, there is no need to move the head drum when changing from stop mode to search mode or high-speed running mode, and search mode or high-speed running mode starts quickly and has excellent operability.

(C, Prior Art) In a tape player equipped with a rotating head, when recording and/or reproducing the tape, it is necessary to wrap the tape at a predetermined wrapping angle around a head drum that supports the rotating head.

Conventionally, in order to wrap the tape around the head drum at a predetermined wrapping angle, the tape was pulled out from the cassette and wound around the head drum.

This method requires a tape loading member or mechanism for pulling out the tape from the cassette and wrapping it around the head drum at a predetermined wrapping angle.
As the number of parts increases, so does the structure? 3. There is a problem that it becomes complicated and this hinders miniaturization of tape players.

Therefore, a tape player has been proposed in which a part of the head drum including a rotating head is inserted into a tape cassette so that a tape is wound around the head drum, and recording and/or reproduction is performed in this state.

According to this method, there is no need to pull out the tape from the cassette, so there are no tape loading members or mechanisms, which reduces the number of parts and has the advantage of simplifying the structure, which makes it possible to downsize the tape player. do.

However, when the tape cassette is moved so that a portion of the head drum is relatively inserted into the tape cassette, the tape cassette is moved between the eject position and the mounting position and from the mounting position toward the head drum. It is necessary to move the tape cassette along two routes between the play position and the two routes intersect with each other, so there is a problem that the mechanism for moving the tape cassette becomes complicated.

Therefore, it is conceivable to move the tape cassette only between the eject position and the mounting position, and move the head drum relative to the tape cassette at the mounting position.

According to such a system, both the tape cassette and the head drum need only be moved along the negative path, so the moving mechanism for these can be relatively simple.

(D. Problem to be Solved by the Invention) By the way, in a conventional tape player that moves the head drum, the head drum is inserted deeper into the head drum insertion recess than the tape spanning surface of the tape cassette. The head drum is moved between the first position, the second position where it is slightly inside the head drum insertion recess from the tape spanning surface, and the third position which is away from the tape spanning surface toward the side opposite to the head drum insertion recess. With the head drum in the first position, the recording and/or playback mode is established, and with the head drum in the second position, the high-speed running mode (FF mode and REW mode) and search mode are established. A stop mode is established with the head tram in the third position, and the tape cassette is moved between the eject position and the mounting position.

Therefore, when transitioning from stop mode to search mode, the head drum must move from the third position to the second position before the search mode or high-speed running mode can be entered, resulting in a large time loss and operation. There is a problem with being inferior in gender.

(E. Means for Solving the Problems) In order to solve the above-mentioned problems, the tape player of the present invention has a tape player in which the head drum is deeper into the head drum insertion recess of the tape cassette than the tape spanning surface of the tape cassette. The head drum is moved between the first position, the second position where it is slightly inside the head drum insertion recess from the tape spanning surface, and the third position which is away from the tape spanning surface toward the side opposite to the head drum insertion recess. , a recording and/or playback mode is formed with the head drum in the first position, and the head drum is in the second position.
A stop mode, a high-speed running mode, and a search mode are selectively established when the head drum is at the third position, and the tape cassette is loaded or unloaded when the head drum is at the third position.

Therefore, in the tape player of the present invention, there is no need for a tape loading mechanism for pulling out the tape from the cassette and winding it around the head drum, so the structure is simplified and downsizing is possible. Since both running mode and search mode are performed with the head drum in the same position, there is no need to move the head drum when transitioning from stop mode to search mode or high-speed running mode, and search mode or high-speed running The mode starts up quickly and has excellent operability.

(F. Embodiment) [FIGS. 1 to 19] Details of the tape player of the present invention will be explained below according to the illustrated embodiment.

(a. Tape Cassette) First, the tape cassette 1 used in the tape player of the present invention will be explained.

Reference numeral 2 denotes a cassette case, which is shaped like a flat rectangular box that is long in the left and right direction when viewed from above.

Two tape reels 3.3 are rotatably housed in the cassette case 2.
A magnetic tape 4 is wound around.

Two through holes 5.5, . 3
An engagement hole 3a provided in.

3a is exposed to the outside.

6.6 are tape outlets formed at both left and right ends of the front surface of the cassette case 2, and the magnetic tape 4 is led out of the cassette case 2 from these tape outlets 6.6, and runs along the front surface of the cassette case 2. It is located in

7 is a tape outlet 6.6 in the front end of the cassette case 2.
It is a head drum insertion recess formed in the part excluding both ends where the .

Reference numeral 8.8 is a contact surface formed near both left and right ends of the inner surface of the head drum insertion recess 7, and when the head drum, which will be described later, comes into contact with this contact surface 8.8, the head drum and the tape are connected. Positioning between the cassette 1 and the cassette 1 is performed.

Reference numeral 9.9 denotes a pinch roller, which is rotatably supported at a position closer to the head drum insertion recess 7 side of the tape outlet 6.6. Thus, the magnetic tape 4 is wound around the pinch rollers 9 and 9 and is placed across the front surface of the cassette case 2, crossing the front surface of the head drum insertion recess 7. The surface where the magnetic tape 4 crosses the front surface of the head drum insertion recess 7 is the tape spanning surface.

Reference numeral 10 denotes a front cover, which is made of a synthetic resin with bending elasticity, and includes a cover part 10a that covers the front surface of the cassette case 2.
and side pieces 1 protruding rearward from both ends of the cover 10a.
0b and 10b are integrally formed, and the side pieces tob,
The tip of 10b is rotatably supported on both left and right sides of the cassette case 2, and is located between the closed position shown in FIG. 3(A) and the open position shown by solid lines and two-dot chain lines in FIG. 3(B). It is designed to be rotated.

When viewed from the side, the distance from the rotation fulcrum of the front surface M10 to the upper or lower end of the front surface of the cassette case 2 is slightly larger than the distance from the rotation fulcrum of the front surface M10 to the cover 10a. When moving between positions, cover part 10
When a passes the upper or lower end of the front surface of the cassette case 2, it receives a force that pulls it forward;
The covering portion 10a is bent by being bent in a gentle arch shape as a whole.
can pass through the upper or lower end of the front surface of the cassette case 2. Then, when it is in the closed position, it is click-locked to that position.

(b, tape player) (b-1, overview) 11 is a main chassis, and 12 is a subchassis fixed to the main chassis 1.

Reference numeral 13.14 denotes a reel stand rotatably arranged at a position near the front of the bottom plate of the main chassis 11, spaced apart from side to side, and connected to a reel stand gear 15.15' and a reel engagement shaft 16.1.
6', the reel base gear 15.15' and the reel engaging shaft 16.16' are frictionally coupled, and the reel base gear 15.15' is rotated by a drive system to be described later. The reel engaging shaft 16.16' is rotated by the frictional force acting between the reel base gear 15.15' and the reel base gear 15.15'.

The sub-chassis 12 is supported by the main chassis 11 above the bottom plate of the main chassis 11 so as to be parallel to the bottom plate.

17. 17. 17' are support pins protruding from appropriate locations on the main chassis 11, and their tip portions 17a, 17
a, 17'a are narrow diameter parts, and the narrow diameter parts 17a,
Dovetail grooves 17b, 17b,
17'b is formed.

18.18.18' is a support hole formed in the sub-chassis 12, and the narrow diameter portions t7a, 17a, 17' of the support pins 17.17.17' are inserted into the support hole 18.18.18'.
a are inserted through the support holes 18.18.
A shoulder portion 17 whose edge portion 18′ is continuous with the base end of the narrow diameter portion 17a, t7a, 17′a of the support pin 17.17.17′.
c, 17c, and 17'c. Dovetail grooves 17b, 1 at the tips of the narrow diameter portions 17a, 17a, 17'a
Locking nuts 19.19.19 are screwed onto 7b and 17'b.

20. 20, 20 are compression coil springs, and support pin 1
7.17.17' Narrow diameter parts 17a117a, 17'a are externally fitted to the part located between the sub-chassis 12 and the locking nut 19.19.19, and support the sub-chassis 12 by its elastic force. Shoulder 1 of pin 17.17.17'
7c, 17c, and 17'c.

The sub-chassis 12 thus has a compression coil spring 20.
．． Since it is pressed against the main chassis 11 by the elastic force of the mechanical chassis 20, 20, even if the main chassis 11 is distorted due to some stress applied to the mechanical chassis, the distortion will directly spread to the sub-chassis 12. This makes it easier to maintain the surface accuracy of the sub-chassis 12.

The front part of the sub-chassis 12 serves as a cassette mounting section, into which the tape cassette 1 is mounted.

Reference numeral 21 denotes a head drum, which is supported on the upper surface of the sub-chassis 12 so as to be movable in the front-rear direction.

The head drum 21 is a rotating middle drum type, and a magnetic head 23, 23, 23 is supported on the outer peripheral surface of the middle drum 22, and a gap 2 is formed between the upper and lower drums 24, 25.
It is located within 6.

In the front portion 21a of the head drum 21, the distance between the upper surface of the upper drum 24 and the lower surface of the lower tram 25 is slightly smaller than the vertical width of the head drum insertion recess 7 of the tape cassette 1. Further, in the front portion 21a, abutting edges 24a and 25a are formed on the upper edge of the upper drum 24 and the lower edge of the lower drum 25, respectively, and projecting slightly outward. The distance between the abutments 1424a and 25a is made slightly larger than the width of the magnetic tape 4.

As shown in FIG. 7, the head drum 21 is in a first position where most of its front part 2ta is inside the head drum insertion recess 7 of the tape cassette 1, and in a first position as shown in FIG. , between a second position where the front portion 21a is slightly inserted into the head drum insertion recess 7 and a third position where the head drum 21 is completely out of the head drum insertion recess 7 as shown in FIG. It is now possible to move.

Then, when the head drum 21 moves to the first position,
The magnetic tape 4 is pushed into the head drum insertion recess 7 and wound around the head drum 21 at a predetermined wrapping angle. In this state, the magnetic heads 23, 23, 23 perform recording and/or reproduction on the magnetic tape 4.

When the head drum 21 moves to the second position, the magnetic tape 4 is wound around the head drum 21 at a shallower wrapping angle than during recording and/or reproduction, and in this state, the magnetic tape 4
Fast forwarding, rewinding and searching are selectively performed.

Then, when taking out the tape cassette 1, the head drum 21 is moved to the third position.

(b-2, Cassette Mounting Portion) The upper surface of approximately the front half of the sub-chassis 12 serves as the cassette mounting portion 27 .

Insertion holes 28.28 are formed in the front portion 12a of the sub-chassis 12 at intervals in the left-right direction.
through the reel engaging shaft 16. of the reel stand 13.14.
16' projects upward from the sub-chassis 12.

29 is a play gear arm, the base end of which is rotatably supported by the support shaft 14a of the reel stand 14. A play gear 30 is rotatably supported at the rotating end of the arm 29, and the play gear 30 is formed integrally with a large gear 30a and a small gear 30b. It is always meshed with the platform gear 15.

The lower end of the support shaft 31 of the play gear 30 is connected to the main chassis 1
1 , and is inserted into a regulation hole 32 formed in the main chassis 11 . The regulation hole 32 is formed in an arc shape centered on the support shaft 14a,
This restricts the range of rotation of the arm 29.

A tension spring 33 is tensioned between the play gear arm 29 and the main chassis 11, and the tension spring 33 applies a rotational force to the play gear arm 29 in a counterclockwise direction when viewed from above. ing. Therefore, the play gear arm 29 is held at a position where the lower end of the support shaft 31 is in contact with the rear end of the regulation hole 32 unless the rotation end side of the play gear arm 29 is pressed from behind.

34 is an FF gear arm, the middle portion of which is rotatably supported by the support shaft 14a, and the rear end of which is rotatably supported by an FF gear 35, which is connected to a reel base gear. It is always meshed with No. 15 small gear 15a. A cam edge 36 is formed on the left side edge of the front end of the FF gear arm 34 and is displaced to the left as it goes forward.

Reference numeral 37 denotes a bow 1 bow length spring installed between the FF gear arm 34 and the main chassis 11;
7 applies rotational force to the FF gear arm 34 in the clockwise direction when viewed from above.

38 is a REW gear arm, the middle part of which is rotatably supported by the support shaft 13a of the reel stand 13, and the REW gear 39 rotatably supported at its rear end. It is constantly meshed with the reel base gear 15'.

A cam edge 40 is formed on the right side edge of the front end of the REW gear arm 38 and is displaced to the right as it goes forward.

Reference numeral 41 denotes a tension spring stretched between the REW gear arm 38 and the main chassis 11, and this bow length spring 41 applies a counterclockwise rotating force to the REW gear arm 38 from above. There is.

These arms 34 and 38 are rotated by operating a lever for operation to be described later, and the reel stand 13 is rotated.
．． FF mode that rotates 14 at high speed, search mode,
A REW mode is created.

42.42.42 is a cassette support bin installed upright on the sub-chassis 12, and the cassette support bin 42.42.42.
The tape cassette 1 is placed on the upper surface of the tape cassette 42, and the tape cassette 1 is positioned in the vertical direction.

Reference numeral 43.43 is a regulating piece raised from both the left and right ends of the front edge of the sub-chassis 12, and is used to control the rear surface of the tape cassette 1 installed in the cassette installation part 27 (note that the tape cassette installed in the tape player The front and rear directions of the tape cassette 1 are opposite to the front and rear directions of the tape player.) The tape cassette 1 is positioned in the front and rear direction by abutting against each other.

Reference numeral 44 denotes a cassette holder, which includes a cassette holder 45 that is flat and rectangular when viewed from the front, and two arms 46 and 46 that protrude rearward from the rear ends of both side walls of the cassette holder 45. are integrally formed.

Reference numerals 47 and 47 denote lid opening edges protruding from the inner surfaces of the rear end portions of both side walls of the cassette holding portion 45, and are formed in an arc shape starting from the lower end and moving upward as it goes rearward.

Such a cassette holder 44 has its arm 46.4.
6 is a supporting wall 48.4 protruding from the main chassis 11.
9, so that the cassette holder 44 can be moved between the eject position shown in FIG. 10 and the mounting position shown in FIG. 11.

When the tape cassette 1 is inserted into the cassette holding part 45 of the cassette holder 44 at the eject position, both ends of the lower part of the front surface M10 are opened at the edge 47.
．． 47. When the tape cassette 1 is further inserted into the cassette holder 45, both ends of the front cover 10 are pushed up by the edges 47 and 47 and rotated to the open position. When the front surface M10 reaches the open position, the front edge of the top plate of the cassette holder 45 is in a state of facing the front lid 10, almost in contact with it.

Therefore, when the tape cassette 1 is pulled out from the cassette holder 45, the front cover 10 is relatively pressed by the front edge of the top plate of the cassette holder 45 and returned to the closed position.

As mentioned above, the tape cassette 1 is attached to the cassette holding section 4.
The tape cassette 1 is mounted on the cassette mounting portion 27 by rotating the cassette holder 44 inserted into the tape cassette 5 downward. That is, tape cassette 1
The reel stand 1 is inserted into the engagement holes 3a, 3a of the tape reel 3.3.
The reel engaging shaft 16.16' of 3.14 is engaged, and the lower side of the cassette case 2 is placed on the upper end surface of the cassette support bin 42.42.42.

(b-3, Support of Head Drum) Reference numeral 50 denotes a head base, which is supported by the sub-chassis 12 so as to be movable in the front-rear direction.

The head base 50 includes a plate-shaped sliding plate 51 and a support block 52 fixed to the sliding plate 51.

Connecting pieces 53 and 53 are provided to protrude outward from approximately the center in the vertical direction on both left and right side surfaces of the support block 52.

A large notch 54 opening toward the rear is formed in the sliding plate 51, and both left and right ends of the rear end of the sliding plate 5] are fixed to connecting pieces 53, 53 of the support block 52. ing.

A sliding piece 55.55 is fixed to the upper surface of the connecting piece 53.53, and is made of synthetic resin with good stiffness, and has a sliding groove 56.56 that opens outward.

Reference numeral 57 designates a slit formed at the center of the front edge of the sliding plate 51 and extending in the front-rear direction and opening at the front end. Reference numeral 58 designates a guide elongated hole formed at the front end of the sliding plate 51 and extending in the front-rear direction.

Reference numeral 59 is an engagement elongated hole formed near the front end of the sliding plate 51 and long in the left-right direction.

A hole 60 is formed in the sub-chassis 12 and occupies most of the rear half of the sub-chassis 12. Side edges 61 and 61 of the chain hole 6o serve as guide edges extending in the front-rear direction and parallel to each other. The guide edges 61.61 have rear end portions 61a, 6
1a is slightly protruded inward, and the distance between the rear ends 61a and 61a is between the inner surfaces 56a and 56a of the sliding groove 56.56 formed in the sliding piece 55.55. The rear end portions 61a, 61a of the guide edges 61.61
The distance between the parts 61b and 6ib excluding the above-mentioned sliding groove 56 is
．． The distance between the rear surfaces 56a and 56a of 56 is larger than the distance between them.

Then, the sliding groove 56.56 of the head base 5o is slidably engaged with the guide edge 61.61 of the sub-chassis 12,
Further, a guide pin 62 implanted in the sub-chassis 12 is slidably engaged with a guide slot 58 of the head base 5o, and a guide pin 63 also implanted in the sub-chassis 12 is engaged with the guide slot 58 of the head base 5o.
is slidably engaged with the slit 57 of the head base 50, whereby the head base 50 is attached to the sub-chassis 1.
2 so as to be movable in the front and rear directions.

Note that the sliding groove 56.56 is located at the rear end 61 of the guide edge 61.61.
a, 61a, the inner surface 56a of the sliding groove 56.56 and the 5Ball:guide edge 61a, 61a are in a state of substantially contact, so that the head base 50 is almost free from left and right deflection. However, when the sliding groove 56.56 is engaged with the portions 61b, 61b of the guide edge 61.61, the portions 61b, 61b and the inner surface 56 of the sliding groove 56.56 are engaged with each other.
Since there is a slight gap between the head base a and the head base 56a, the head base 50 is able to swing slightly from side to side.

The head drum 21 described above is fixed to such a head base 50.

The head drum 21 is a motor-integrated head drum, and a drive gear 65 is fixed to an output shaft 64 protruding from its lower end.

66 is a gear base, the rear end of which is fixed to the bottom [S] of the support block 52 of the gear base 50.

A transmission gear 67 is rotatably supported by a gear base 66 on the left side of the drive gear 65. The transmission gear 67 is formed by integrally forming a large gear 87a and a small gear 67b, and the large gear 67a is meshed with the drive gear 65.

68 and 69 are lined up on the left and right at the front end of the gear base 66,
The relay gears are rotatably supported in a mutually meshed state, and 68 is a FWD system, and 69 is a REW system. The FWD system relay gear 68 is a large gear 68a.
and a small gear 68b are integrally formed coaxially.

The large gear 68a of the relay gear 68 of the FWD system and the small gear 67b of the transmission gear 67 are linked by a linkage gear 70 rotatably supported by the gear base 66.

Therefore, when the motor of the head drum 21 rotates, the two relay gears 68 and 69 move in opposite directions, that is, when viewed from above, the FWD relay gear 68 moves counterclockwise, and the REW relay gear 69 moves counterclockwise. Each will be rotated clockwise.

Reference numeral 71 designates a capstan arm, whose base end is rotatably supported by the gear base 66 and the upper drum 24, and whose rotation axis is coaxial with the rotation axis of the transmission gear 67.

A capstan 72 is rotatably supported at the rotating end of the capstan arm 71, and a capstan gear 73 is fixed to an Ijb 72a extending below the capstan 72. The capstan gear 73 is meshed with the small gear 67b of the transmission gear 67. Therefore, when the motor of the head drum 21 rotates, the capstan 72 is rotated.

Reference numeral 74 denotes a tension spring stretched between the capstan arm 71 and the head base 50, which applies a rotational force to the capstan arm 71 in the counterclockwise direction when viewed from above. .

Then, the head base 50 moves forward and the head drum 2
1 is in the first position, the sliding grooves 56, 56 of the head base 50 are engaged with the portions 61b, 61b of the guide edge 61, and the head base 50 is in a state where it can swing slightly from side to side. Therefore, during the process in which the abutting edges 24a, 25a of the head drum 21 are pressed against the abutment surface 8.8 of the tape cassette 1, the head drum 21 automatically corrects its attitude. Therefore, as long as the abutment surface 8.8 of the tape cassette 1 has sufficient precision, the relative position between the magnetic tape 4 and the head drum 21 can be defined with high precision.

Then, in the process of moving the head drum 21 to the first position, the capstan 72 engages with the reel engaging shaft 16 of the reel stand 14 on the winding side of the pinch roller 9.9 of the tape cassette 1. The head drum 21 contacts the tape reel 3 side 9 via the magnetic tape 4, and from there, the head drum 21
The capstan 72 moves to the first position.
is relatively moved back slightly, and the tension spring 74 is slightly expanded. Therefore, the capstan 72 is pressed against the pinch roller 9 via the magnetic tape 4 by the elastic force accumulated by the extension of the tension spring 74.

(b-4, Operation Mechanism) Reference numeral 75 denotes a head moving lever, which is formed long in the left-right direction, and whose approximately middle portion is rotatably supported by the main chassis 11.

A connecting pin 76 is installed at the left end of the head moving lever 75, and the connecting pin 76 is slidably engaged with the engagement elongated hole 59 of the head base 50. Therefore, when this head moving lever 75 is rotated, the connecting bin 7
6 will move approximately in the front-back direction, and as a result,
The head base 50, that is, the head drum 21 is moved in the front-back direction.

The head moving lever 7 of the front edge of the head moving lever 75
A pressed portion 75a is formed at a position to the left of the pivot point 5. Further, the rear edge 75b of the right end portion is used as a stopper edge, and a spring catch 75c is further formed at the right end.

Reference numeral 77 denotes a PLAY lever, which is supported by the main chassis 11 so as to be slidable in the front and rear directions.

Reference numeral 78 denotes a pressing piece protruding leftward from approximately the middle position in the front-rear direction of the PLAY lever 77, and the left end of the rear side edge has a pressing edge 78a that is inclined so as to be displaced toward the front as it goes to the left. Further, the left side edge 78b is a holding edge extending in the front-rear direction.

Reference numeral 79 denotes an arm protruding leftward from a position near the front end of the PLAY lever 77, and a lock pin 79a is erected at the tip of the arm 79.

80 is a stopper piece installed at a position near the rear of the right side edge of the PLAY lever 77, 81 is a spring holder protruding from the rear end of the PLAY lever 77 toward the right, and 82 is a PLAY lever piece.
This is a spring holder that protrudes toward the right from a position near the front end of the lever 77.

Note that 83 is a push button attached to the front end of the PLAY lever 77.

Then, the spring catch 75c of the head moving lever 75 and P
A tension spring 8 is connected between the LAY lever 77 and the spring holder 81.
4 is stretched, thereby applying a rotational force to the head moving lever 75 in the counterclockwise direction when viewed from above. When no force is applied to the head moving lever 75 to rotate it in the clockwise direction, the stopper edge 75b of the head moving lever 75 is at P LA.
The stopper piece 80 of the Y lever 77 comes into contact with the stopper piece 80 from the front side, thereby defining the position of the head moving lever 75.

Reference numeral 85 denotes a tension spring tensioned between the spring catch 82 of the PLAY lever 77 and the main chassis 11, which applies a forward moving force to the PLAY lever 77.

Thus, while the P LAY lever 77 is not pushed in, the head moving lever 75 is positioned so as to extend substantially in the left-right direction, as shown in FIG. are doing. And P.L.
When the AY lever 77 is pushed in as shown in FIG. 15, the right end of the head moving lever 75 touches the tension spring 84.
is pulled rearward by the PLAY lever 77 via the PLAY lever 77, so the head moving lever 75 rotates counterclockwise when viewed from above, and its connecting bin 76 moves approximately forward, so that the head drum 21 moves to the first position. be moved to a certain position. The play lever 77 is held in the retracted position shown in FIG. 15 by a lock lever, which will be described later, until the lock is released, and therefore the head drum 21 is also held in the first position.

Reference numeral 86 denotes a lever 5 that is slidably supported by the main chassis 11 in the front-rear direction at a position spaced apart to the left of the PLAY lever 77.
It is a TOP/EJECT lever, and has a pressing protrusion 87 erected thereon. In addition, by means of explosive means (not shown), 5TOP
The forward moving force is applied to the /EJECT lever 86.

In addition, the rear end edge 86a of the 5TOP/EJECT lever 86
is a pressed edge. In addition, 86b is 5TOP/EJE
This is a push button attached to the front end of the CT lever 86.

88 is a plate-shaped lock lever that is long in the left and right direction,
It is supported at a position near the front end of the main chassis 11 so as to be slidable in the left-right direction, and a leftward moving force is applied by an unillustrated spring means.

Reference numeral 89 denotes a hole long in the front-back direction formed at a position near the center of the lock lever 88, and a pressed edge 89a on the right edge of the chain hole 89 is inclined so as to be displaced to the left as it goes rearward. is formed. In addition, lock lever 8
8 is given a leftward movement force by an explosive means (not shown).

The pressing protrusion 87 of the 5TOP/EJECT lever 86 is located within the hole 89 of the lock lever 88.
Moreover, it is located so as to substantially abut a portion of the right side edge of the chain hole 89 near the front end. And 5TOP/EJECTL
, when the par 86 is pushed backward, the pressing protrusion 87
presses the pressed 189a of the lock lever 88,
The lock lever 88 is moved to the right against the resilient force applied thereto. When the 5TOP/EJECT lever 86 returns to its original position due to the elastic force applied thereto, the lock lever 88 is also moved leftward by the elastic force applied thereto and returns to its original position.

A lock pawl 91 is provided to protrude leftward from the left side edge of a projecting piece 90 that protrudes rearward from the right end of the lock lever 88. Behind the lock pawl 91! Reference numeral 91a is a locking edge extending in the left-right direction, and an edge 91b extending forward from the left end of the locking edge 91a is a pressed edge inclined so as to be displaced to the right as it goes forward.

When the PLAY lever 77 is in the non-pushed position shown in FIG. 14, the locked pin 79a is in contact with the pressed edge 91b of the lock claw 91 of the lock lever 88 at a position closer to the front. And P LAY lever 77
When pushed in, the locked pin 79a presses the pressed edge 91b of the lock lever 88, and the lock lever 88 is moved to the right. When the PLAY lever 77 reaches the push-in position shown in FIG. 15, the locked pin 79a comes off the pressed edge 91b rearward, and the lock lever 88 moves to the left due to the resilient force applied thereto. The locking edge 91a is the locked bin 79.
a, and thereby the P LAY lever 7
Even if the force that was pushing the pin 7 backward is removed, the locked pin 79a will still be locked by the lock edge 91a of the lock lever 88.
is engaged from behind, and the P LAY lever 77 is locked in the pushed position.

When the 5TOP/EJECT lever 86 is pushed in from the state where the PLAY lever 77 is locked in the push-in position, the lock lever 88 moves to the right as described above, so that the PLAY lever 77 is moved to the front side of the locked bin 79a. Since the lock edge 91a that was located escapes to the right,
The PLAY lever 77 is returned to the non-depressed position by the moving force urged by the tension spring 85.

Reference numeral 92 denotes a support lever that is slidably supported by the main chassis 11 in the front and back direction at a position between the P LAY lever 77 and the 5TOP/EJECT lever 86, and is provided with a forward moving force by an elastic means (not shown). Forced. 93
is a stopper edge of the left side edge of the support lever 92 that is slightly rearward from the approximate center.

Reference numeral 94 denotes a support piece that projects leftward from the front side of the stopper edge 93 located approximately at the center of the support lever 92 in the front-rear direction.

95 is a relay lever, approximately in the center of which is the support lever 92.
The support piece 94e is rotatably supported. The relay lever 95 extends substantially in the front-rear direction, and has a pressed piece 96 projecting downward from its front end and a pressing piece 97 projecting upward from its rear end. Further, a regulating piece 99 is provided to protrude downward from a position approximately in the middle of the right side edge of the rear piece 98 in the front-rear direction.

A spring piece 100 is inserted from the left end of the pressing piece 97 of the relay lever 95.
protrudes toward the left, and a three-tension spring 101 is stretched between the spring hook ioo and a spring hook 92a formed at the rear end of the support lever 92. ,
The relay lever 95 is biased with a rotational force in the clockwise direction when viewed from above, and normally, its regulating piece 99 comes into contact with the left side surface of the stopper edge 93 of the support lever 92, and its posture is approximately forward and backward. It is restricted to a relay posture extending in the direction. Then, with the support lever 92 in the forward position and the relay lever 95 in the relay position, P is in the non-pushing position.
The pressing edge 78a of the LAY lever 77 is in contact with the front end of the regulating piece 99 of the relay lever 95 from the front right.

When the PLAY lever 77 is moved from this state to the push-in position, the push edge 78a is moved to the relay lever 9.
In order to press the regulating piece 99 of No. 5 toward the rear left, the relay lever 95 is rotated counterclockwise against the tensile force of the tension spring 101.
With the retreat, the regulating piece 99 comes into contact with the holding edge 78b of the PLAY lever 77, and is held in the non-relay position rotated clockwise from the relay position.

When the relay lever 95 is in the relay position, the pressed piece 96 is closely facing the pressing force 186a of the 5TOP/EJECT lever 86 from behind, and the pressing piece 97 is the pressed part of the head moving lever 75. It closely opposes 75a from the front. In addition, in the non-relay position, the pressed piece 96 is the 5TOP/EJECT lever 86.
The pressing piece 97 is located to the right away from the locus of movement of the pressing force 186a, and the pressing piece 97 is positioned to the left away from the locus of movement of the pressed portion 75a of the head moving lever 75.

Thus, when the PLAY lever 77 is moved to the push-in position and the head drum 21 is moved to the first position to form the recording and/or playback mode, in order to cancel the mode, the 5TOP /EJECT lever 86
When pushed in, the pressing edge 86a touches the relay lever 95.
without pressing the pressed piece 96 of the lock lever 88.
is moved to the right, that is, in the unlocking direction, and the PLAY lever 77 is returned to the non-depressed position, thereby returning the head drum 21 to the second position. Then, the relay lever 95 is returned to the relay position.

5TOP with the PLAY lever 77 in the non-push position
/When the EJECT lever 86 is pushed in, the pressure 1
Pressed piece 9 of relay lever 95 with iB6a in relay posture
6 toward the rear, the relay lever 95 is moved rearward together with the support lever 92, and at this time, the pressing piece 97 of the relay lever 95 pushes the pressed portion 75a of the head moving lever 75 approximately rearward. For pressing, the head moving lever 75 rotates clockwise when viewed from above against the tension of the tension spring 84, thereby moving the head tram 21 to the third position. Then,
The locking of the cassette holder 44 by the locking means (not shown) is released, and the cassette holder 44 is moved to the eject position by the springing means (not shown).

Further, when the cassette holder 44 reaches the eject position, it is locked to the head base 50, and therefore the head drum 21 is held at the third position until the cassette holder 44 returns to the mounting position. ing.

The head base 50 can be locked in this manner, for example, by using a lock claw on the lock lever 88 that locks the 5TOP/EJECT lever 86 in the pushed position, and in the process of moving the cassette holder 44 to the mounting position, the lock lever is This can be realized by a number of means, such as interlocking a cam that moves the -88 in the unlocking direction with the cassette holder 44.

Reference numeral 102 denotes a REW lever, which is supported by the main chassis 11 on the left side of the 5TOP/EJECT lever 86 so as to be slidable in the front-rear direction, and is given a forward moving force by an elastic means (not shown). The REW lever 102 is provided with a locking piece 102a and a pressing piece 102b, respectively.

Reference numeral 103 denotes a longitudinally elongated hole formed in the lock lever 88 on the left side of the hole 89, and a lock pawl 104 is provided on the right side edge of the chain hole 103 to protrude leftward. The rear edge 104a is a lock edge extending in the left-right direction, and the edge 104b extending forward from the left end of the lock edge 104a is a pressed edge that moves to the right as it moves forward.

Then, the locked piece 102a of the REW lever 102
is located in the hole 103 of the lock lever 88, and RE
When the W lever 102 is in the non-pushed position shown in FIG. 14, the locked piece 102a faces the pressed edge 104b of the lock pawl 104 from the front. When the REW lever 102 is pushed in, the locked piece 102a
presses the pressed edge 104b of the lock claw 104,
Lock lever 88 is moved to the right. and,
When the REW lever 102 reaches the push-in position shown in FIG. 18, the locked piece 102a comes off backward from the pressed edge 104b, and the lock lever 88 moves to the left due to the elastic force applied thereto. , the locking edge 104a is located on the front side of the locked piece 102a, so that RE
Even if the force pressing the W lever 102 backward is removed,
The locked piece 102a is engaged with the locking edge 104a from the rear, and the REW lever 102 is locked in the pushed position.

Then, while the REW lever 102 moves from the non-push position to the push-in position, the pressing piece 102b is pressed against the REW lever 102.
Since it escapes backward from the cam edge 40 of the W gear arm 38,
Due to the tensile force of the tension spring 41, the REW gear arm 38
is rotated counterclockwise, and its REW gear 39 meshes with the relay gear 69. Also, while the REW lever 102 is returned from the pushed position to the non-pressed position, the pressing piece 1
02b presses the cam edge 40 of the REW gear arm 38 forward, the REW gear arm 38 is rotated clockwise against the tensile force of the tension spring 41, and the REW gear 39 is separated from the relay gear 69.

Reference numeral 105 denotes an FF lever, which is supported by the main chassis 11 on the left side of the REW lever 102 so as to be slidable in the front-rear direction, and is biased forward by an elastic means (not shown).

The FF lever 105 has a locking piece 105a and a pressing piece 105b protruding from each other.

Reference numeral 106 denotes a hole long in the front-rear direction formed on the left side of the hole 103 in the lock lever 88, and a lock pawl 107 is provided on the right edge of the chain hole 106 to protrude leftward. The rear 1i 107a is a locking edge extending in the left-right direction, and the edge 107b extending forward from the left end of the locking edge 107a is a pressed edge that moves to the right as it moves forward.

When the locked piece 105a of the FF lever 105 is located within the hole 106 of the lock lever 88 and the FF lever 105 is in the non-pushed position shown in FIG.
The locked piece 105a is the pressed edge 1 of the lock claw 107.
It is facing 07b from the front. And FF lever 1
05 is pushed in, the locked piece 105a presses the pressed edge 107b of the lock pawl 107, and the lock lever 88 is forced to move to the right. And F
When the F lever 105 reaches the push-in position shown in FIG. 19, the locked piece 105a comes off backward from the pressed edge 107b, and the lock lever 88 moves to the left due to the elastic force applied thereto. , the locking edge 107a is located in front of the locked piece 105a, and as a result, even if the force pressing the FF lever 105 backward is removed, the locked piece 105a is not engaged with the locking edge 107a from the rear. The FF lever 105 is then locked in the pushed position.

Then, while the FF lever 105 moves from the non-pushing position to the push-in position, the pressing piece 105b escapes backward from the cam edge 36 of the FF gear arm 34, so that the FF gear arm 34 is moved by the tensile force of the tension spring 37. is rotated clockwise, and the FF gear 35 is connected to the relay gear 68.
is engaged with. Further, while the FF lever 105 is returned from the pushed position to the non-pressed position, the pressing piece 105b
Since the cam edge 36 of the gear arm 34 is pressed forward, F
The F gear arm 34 is rotated counterclockwise against the tensile force of the tension spring 37, and the FF gear 35 is separated from the relay gear 68.

(b-5, Operation) Next, an overview of the operation of the tape player will be described.

First, to install tape cassette 1, 5TOP/E
Push in the JECT lever 86. Then, 5TOP/E
The pressed piece 96 of the relay lever 95 is pressed by the pressing edge 86a of the JECT lever 86, and the relay lever 95 moves backward together with the support lever 92, and the pressed piece 97 of the relay lever 95 moving rearward presses the pressed piece 96. 75a is pressed rearward, the head moving lever 75 is rotated clockwise, and the head base 5o is moved rearward, thereby moving the head drum 21 to the third position.

When the head drum 21 moves to the third position, the lock on the cassette holder 44 is released, and the cassette holder 44 is moved to the eject position shown in FIG. 17 by an unillustrated resilient means.

Then, when the tape cassette 1 is inserted into the cassette holding part 45 of the cassette holder 44 at the eject position,
Front surface M10 is moved to the open position. Note that the tape cassette 1 can be used upside down, and no matter which direction it is inserted into the cassette holding part 45, the front M10
is rotated upward. Further, recording on the magnetic tape 4 is performed so that diagonal recording tracks are formed in one area divided into two in the width direction by a so-called helical scan.

Rotate the cassette holder 44 into which the tape cassette l has been inserted downward and move it to the cassette mounting section 27.
When the tape cassette 1 reaches the mounting position, the lock that keeps the head drum 21 in the third position is released, so the head moving lever 75 is moved counterclockwise by the tension force of the tension spring 84 to the stopper edge 75b. The head drum 21 is rotated until it comes into contact with the stopper piece 80 of the PLAY lever 77, and the head drum 21 reaches the second position.

The state shown in FIG. 14 is the stop state (stop mode), and the relay gears 68 and 69 are the play gears 30 and FF
It is in a state separated from gear 35 and REW gear 39.

When the FF lever 105 is moved to the push-in position from this state, the FF gear 35 is moved to the relay gear 6 as shown in FIG.
8 large gear 68a, and the head drum 21
The drum motor is rotated, thus forming an FF mode in which the reel stand 14 is rotated at high speed in the tape winding direction.

Further, when the REW lever 102 is moved from the stop state to the push-in position, the REW gear 3
9 is meshed with the relay gear 69, the drum motor is rotated, and therefore a REW mode is established in which the reel stand 13 is rotated at high speed in the tape winding direction.

Also, when the head drum 21 is in the second position, the magnetic heads 23, 23, 23 move while lightly touching the magnetic tape 4, so that the magnetic tape 4 is moved as in the FF mode or REW mode. It is also possible to form a search mode by simultaneously reading signals using the magnetic heads 23, 23, 23 while traveling at high speed.

Note that the above-described high-speed running mode and search mode can also be directly transferred from other modes than the stop mode. That is, when the FF lever 105 and the REW lever 102 are pushed in, the lock lever 88 is moved in the unlocking direction, so the previous mode is canceled and the FF
This is because a mode is created by pressing the lever 105 or the REW lever 102.

Next, when the PLAY lever 77 is moved to the push-in position,
As described above, the head drum 21 is moved to the first position, and the small gear 68b of the relay gear 68 is meshed with the large gear 30a of the play gear 30. At this time, the play gear arm 29 is rotated slightly clockwise, and the tension spring 3
3 is extended, and as a result, the small gear 6 of the relay gear 68
8b and the large gear 30a of the play gear 30 are properly pressed together. Then, the drum motor is rotated and the reel stand 1 is rotated.
4 is rotated in the tape winding direction to establish a recording and/or reproducing mode.

And this recording and/or playback mode is 5TOP/
When the EJECT lever 86, REW lever 102, or FF lever 105 is pushed in, it is released, and the mode shifts to the mode in which each lever is pushed in.

(G. Effects of the Invention) As is clear from the above description, the tape player of the present invention winds the tape around the head drum by inserting a part of the head drum including the rotating head into the tape cassette. In a tape player that performs recording and/or playback in this state, the head drum is positioned along the tape spanning surface of the tape cassette, that is, the tape is positioned along the front surface of the head drum insertion recess of the tape cassette when not in use. A first position where the head drum is inserted deeper into the head drum insertion recess than the side facing the head drum, a second position where the head drum is inserted slightly into the head drum insertion recess from the tape spanning side, and a second position where the head drum is inserted from the tape spanning side. A recording and/or playback mode is established with the head drum in the first position, and the head drum is in the second position. The present invention is characterized in that a stop mode, a high-speed running mode, and a search mode are selectively formed in the state where the head drum is in the third position, and the tape cassette is loaded or unloaded with the head drum in the third position.

Therefore, in the tape player of the present invention, there is no need for a tape loading mechanism for pulling out the tape from the cassette and winding it around the head drum, so the structure is simplified and downsizing is possible. Since both running mode and search mode are performed with the head drum in the same position, there is no need to move the head drum when transitioning from stop mode to search mode or high-speed running mode, and search mode or high-speed running The mode starts up quickly and has excellent operability.

It should be noted that the specific structures and shapes shown in the above embodiments are merely examples of embodiments of the present invention.
These should not be construed to limit the technical scope of the present invention.

[Brief explanation of drawings]

1 to 19 show an example of the implementation of the tape player of the present invention, in which FIG. 1 is a perspective view of the tape cassette, FIG. 2 is a horizontal sectional view, and FIG. 3 is a side view of the tape cassette. (A) shows the state in which the front lid is in the closed position;
B) is a diagram showing the front cover in the open position, Figure 4 is an exploded perspective view of the tape player, Figure 5 is a perspective view of the gear base, Figure 6 is an overall plan view, and Figure 7 is the head drum. 8 is a partially cutaway plan view showing the head drum in the second position, and FIG. 9 is a partially cutaway plan view showing the head drum in the third position ( A partially cutaway plan view showing a certain state, FIG. 10 is a side view of the main part showing the cassette holder in the eject position, and FIG. 11 is a side view of the main part showing the cassette holder in the cassette mounting position. , Figure 12 shows the state in which the tape cassette is inserted into the cassette holder, opened, and then pulled out (
Partially cutaway side views shown in order from A) to (F), No. 13
The figure is a vertical cross-sectional view of the head drum and the gears on the gear base unfolded, and Figures 14 to 19 are plan views showing the movement of the operating mechanism, with Figure 14 being in the non-pushing position. , Figure 15 shows the state in the recording and/or playback mode, and Figure 16 shows the state in the recording and/or playback mode.
17 shows the eject state, FIG. 18 shows the rewind mode, and FIG. 19 shows the fast forward mode. Explanation of symbols 1... Tape cassette, 4... 7... Head drum insertion recess, 21... Head drum, 21a... Part of head drum, 23... Rotating head tape, Applicant Soni

Claims (1)

[Scope of Claims] A tape player that winds a tape around the head drum by inserting a part of the head drum equipped with a rotating head into a tape cassette, and performs recording and/or playback in this state, the head drum is a first position where the tape is deeper into the head drum insertion recess than the tape spanning surface of the tape cassette, that is, the surface where the tape is located along the front surface of the head drum insertion recess of the tape cassette when not in use. and a second position where it is slightly inside the head drum insertion recess from the tape spanning surface, and a third position which is away from the tape spanning surface toward the side opposite to the head drum insertion recess. recording and/or recording with the head drum in the first position;
Alternatively, a playback mode is formed, a stop mode, a high-speed running mode, and a search mode are selectively formed with the head drum in the second position, and a tape cassette is loaded or loaded with the head drum in the third position. A tape player characterized in that an ejection is performed.