JPH03178071A - Cassette holder of tape player - Google Patents

Abstract

PURPOSE:To obtain enough rigidity with the small number of parts and to form a casstte holder at low cost by integrally forming a guide part, which is composed of two sheet metal frame members, while enlarging the thickness of one sheet rather than the thickness of the other sheet so as to guide the front lid of a tape cassette in a lid opening direction to the other sheet metal frame member. CONSTITUTION:A guide part 46h is integrally formed by the two sheet metal frame members, at least, while enlarging the thickness of one sheet metal frame member 45 rather than that of the other sheet metal frame member 46 so as to guide the front lid of the tape cassette in the lid opening direction to the other sheet metal frame member 46. Therefore, since required strength can be obtained by making thick the thickness of one sheet metal frame member 45 and work such as narrowing-down work, etc., can be easily executed by making thin the thickness of the other sheet metal frame member 46, expensive work such as outsert work, etc., is not required. Thus, the cassette holder of a tape player can be formed at low cost with the small number of parts and the enough rigidity.

Description

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

A. Field of use in a business B1 Overview of the invention C7 Prior art [Figs. 1 to 3, Fig. 22] D0 Problem E to be solved by the invention, Means F for solving the problem F, Examples [ 1 to 21] a. Overview: cassette mounting section C, cassette holder d, head drum support e, operating mechanism f, operation G0 Effects of the invention (A. Field of industrial application) The present invention is novel. related to tape player cassette holders. Specifically, the cassette holder for a tape player holds a tape cassette, in which the tape is stretched along the front surface of the cassette case, and the front side of the tape is covered with a front lid rotatably supported by the cassette case. The cassette holder for a tape player, which has the function of opening the front cover during the process of loading a tape cassette, has a small number of parts and has sufficient rigidity.
Furthermore, the present invention aims to provide a novel tape player cassette holder that can be manufactured at low cost.

(B. Summary of the Invention) The cassette holder of the tape player of the present invention is formed of at least two sheet metal frame members, the thickness of one sheet metal frame member is made larger than the thickness of the other sheet metal frame member, and the cassette holder of the tape player of the present invention is formed of at least two sheet metal frame members. By integrally forming the guide part that guides the front cover of the tape cassette in the opening direction on the frame member, rigidity can be maintained by one sheet metal frame member, and the guide part can be integrally formed with the other sheet metal frame member. Therefore, the number of parts is reduced, and since it is made of sheet metal material, it is inexpensive.

(C, Prior Art) [Figures 1 to 3, Figure 22] A tape is stretched along the front of the cassette case, and the front side of the tape is covered with a front cover rotatably supported by the cassette case. For example, the tape cassette 1 shown in FIGS. 1 to 3 can be considered as a tape cassette.

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 on the inner surface of the head drum insertion recess 7 at positions near both left and right ends. Positioning between the tape cassette 1 and the tape cassette 1 is performed.

Pinch rollers 9.9 are rotatably supported at a position closer to the head drum insertion recess 7 of the tape outlet 6.6.The magnetic tape 4 is wound around these pinch rollers 9.9. The magnetic tape 4 is placed over the front surface of the cassette case 2 in such a state that it crosses the front surface of the head drum insertion recess 7.The magnetic tape 4 then crosses the front surface of the head drum insertion recess 7. The surface where the tape is placed is the tape mounting 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 t protruding rearward from both ends of the cover 10a.
ob and iob are integrally formed, and the side piece 10b,
The distal end of the cassette case 2 is rotatably supported on both left and right sides of the cassette case 2, and the closed position shown in FIG. 3(A) and the open position shown by the solid line and the two-point Mi line in FIG. It is designed to be rotated between.

When viewed from the side, the distance from the rotation fulcrum of the front surface M1o 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 M1o 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.

Consider, for example, a cassette holder a shown in FIG. 22 as a cassette holder for holding the tape cassette 1 described above.

Each part of the cassette holder a is integrally formed of synthetic resin, and the cassette holder a has a flat rectangular frame shape when viewed in the front-rear direction. The arm portions C and C protrude toward each other, and the inner surface of the arm portion C%C is provided in a protrusion-like manner, and the substantially forward facing surface thereof gradually moves upward and gradually changes as it goes rearward. Guide part d that draws an arc shape so that the ratio becomes large
, d.

When the tape cassette 1 is inserted into the cassette holding part of the cassette holder a, both ends of the lower side of the front cover 10 come into contact with the guide parts d, d. When the tape cassette 1 is further inserted into the cassette holding part, both ends of the front cover 10 are pushed up by the guide parts d and d and rotated to the open position.

(D. Problem to be Solved by the Invention) By the way, if each part is integrally formed with synthetic resin like the above-mentioned cassette holder a, there will be a lack of strength, especially in the case of a small holder. However, there are restrictions on plate thickness, making it difficult to obtain the required strength.

Therefore, it may be possible to form the guide parts d and d using a sheet metal material so that sufficient strength can be obtained even when the size is reduced.
It is difficult to form by squeezing.

Therefore, it is conceivable to form most of the cassette holder from a sheet metal material, and to form parts such as the guide parts d and d, which are difficult to squeeze out, as synthetic resin parts by so-called synthetic resin outsert molding. However, this often results in an increase in costs, such as the need for a mold for forming the Actcert in addition to a mold for processing the sheet metal material.

(E. Means for Solving the Problem) Therefore, the cassette holder of the tape player of the present invention has the following features:
It is formed by at least two sheet metal frame members, the thickness of one sheet metal frame member is larger than the thickness of the other sheet metal frame member, and the front cover of the tape cassette is guided by the other sheet metal frame member in the opening direction. The guide portion is integrally formed.

Therefore, in the cassette holder of the tape player of the present invention, the necessary strength can be obtained by increasing the thickness of one sheet metal frame member, and by decreasing the thickness of the other sheet metal frame member, Processing such as squeezing becomes easy, so there is no need for costly processing such as outsert molding. Therefore, it is possible to contribute to miniaturization and ensure sufficient strength, and it is also possible to form parts that require drawing processing in one piece. Therefore, according to the cassette holder for a tape player of the present invention, the cassette holder for a tape player, which has the function of opening the front cover during the process of mounting a tape cassette, can be made with a small number of parts and has sufficient rigidity. Moreover, it can be formed at low cost.

(F. Embodiment) [Figures 1 to 21] Below, details of the cassette holder of the tape player of the present invention will be explained along with an example of a tape player using the cassette holder of the present invention.

(a, Overview) 11 is a main chassis, and 12 is a subchassis fixed to the main chassis 11.

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' is a support bottle protruding from an appropriate location on the main chassis 11, and its 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 17a, 17a, 17' of the support bin 17.17.17' are inserted into the support hole 18.18.18'.
a are inserted through the support holes 18.18.
A shoulder 17 whose edge 18' is continuous with the base end of the narrow diameter part 17a, 17a, 17'a of the support bin 17.17.17'
c, 17c, and 17'C. Dovetail grooves 17b, 1 at the tips of the narrow diameter portions 17a, f7a, 17'a
Locking nuts 19.19.19 are screwed onto 7b and 17'b.

20. 20, 20 are compression coil springs, and support bin 1
7.17.17' narrow diameter portion 17a.

Of the bolts 17a and 17'a, the bolts 17a and 17'a are externally fitted onto the portions located between the subchassis 12 and the locking nuts 19.
7. It is pressed against the shoulders 17c, 17c, 17'C of 17'.

The sub-chassis 12 thus has a compression coil spring 20.
, 20, 20 are pressed against the main chassis 11 by the elastic force of the mechanical chassis, 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 tram 22, and a gap 2 formed between the upper and lower drums 24, 25 is used.
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 drum 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 abutting edges 24a and 25a is made slightly larger than the width of the magnetic tape 4.

As shown in FIG. 9, the head drum 21 is in the first position where most of its front part 21a is inside the head drum insertion recess 7 of the tape cassette 1, and in the first position as shown in FIG. , 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 possible to move between the two positions.

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. Cassette Mounting Portion) The upper surface of approximately the front half of the sub-chassis 12 serves as a 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 by integrally forming a large gear 30a and a small gear 30b. It is always meshed with the reel stand 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.

33 is play gear arm 29 and main chassis 1! The tension spring 33 is tensioned between the play gear arm 29 and the play gear arm 29, and the tension spring 33 applies a rotational force to the play gear arm 29 in a counterclockwise direction when viewed from above. 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 tension spring stretched between the FF gear arm 34 and the main chassis 11, and the draw length spring 37 applies a 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'.

On the right edge of the front end of the REW gear arm 38 is a cam that moves to the right as you move forward! i40 is formed.

Reference numeral 41 denotes a tension spring stretched between the REW gear arm 38 and the main chassis 11, and this tension spring 41 applies a rotational force to the REW gear arm 38 in the counterclockwise direction when viewed from above. .

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 pin 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.

43. 43 is a regulation piece raised from both left and right ends of the front i4m of the sub-chassis 12, and is
When the rear surface of the tape cassette 1 attached to the tape cassette 1 (the front-rear direction of the tape cassette 1 attached to the tape player is opposite to the front-rear direction of the tape player) hits, the tape cassette 1 Positioning is performed in the front-back direction.

(c, cassette holder) 44 is a cassette holder, which includes a cassette holder 44a that is flat and rectangular when viewed from the front, and two arms that protrude rearward from the rear ends of both side walls of the cassette holder 44a. 44b, 44b are physically formed.

The cassette holder 44 consists of two upper and lower sheet metal frame members 45.4.
Consists of 6.

The upper sheet metal frame member 45 is a member necessary to maintain rigidity, and is made of a slightly thick sheet metal material.

Reference numeral 45a denotes a top plate section, which has the shape of an oblong rectangular frame when viewed from above, and has pressing pieces 45b, 45b protruding rearward from positions near both left and right ends of the front edge of the opening. ,
The pressing pieces 45b, 45b are inclined so that their rear ends are located slightly below the lower surface of the top plate portion 45a, and their rear ends are slightly curved upward.

45c is a lid return piece that projects upward from the rear edge of the top plate portion 45a, excluding both ends.

Further, the front edge of the top plate portion 45a is slightly inclined forward and upward.

Reference numerals 45d and 45d are arm portions, and the upper edge of the front end thereof is integrally connected to the rear end portions of the left and right side edges of the top plate portion 45a.

45e, 45e are connecting pieces that project upward from a position near the top plate 45a among the upper edges of the arm parts 45d, 45d, and the upper ends of the connecting pieces 45e, 45e are directed outward. It is bent, and mounting holes 45f, 45f are formed in the upper end.

The lower sheet metal frame member 46 is formed of a sheet metal material that is thinner than the sheet metal material of the upper sheet metal frame member 45 in consideration of workability such as drawing processing.

46a is a bottom plate portion, and two insertion holes 46b, 46b are formed in the bottom plate portion 46a, spaced apart from each other in the left and right directions. Further, the front edge portion of the bottom plate portion 46a is inclined slightly forward and downward.

Reference numerals 46c and 46c are side plate portions, and the lower edges of substantially the front half thereof are integrally connected to both side edges of the bottom plate portion 46a.

46d and 46d are engagement pieces that protrude upward from the front ends of the upper edges of the side plates 46c and 46c, and the engagement pieces 46d
, 46d are formed with notches 46e, 46e whose lower edges are located on extensions of the upper edges of the side plate parts 46c, 46c.

46f, 46f are connection pieces that protrude upward from the rear end portions of the upper edges of the side plate portions 46c, 46c, and the connection pieces 46
The upper end portions of f and 46f are bent outward, and mounting holes 46g and 46g are formed in the upper end portions.

46h, 46h are guide parts formed by squeezing the rear edges of the side plate parts 46c, 46c inward, and the front surfaces thereof are formed in an arc shape that starts from the lower end and moves upward as it goes rearward. There is.

Thus, the above-mentioned upper sheet metal frame member 45 and lower sheet metal frame member 46 are overlapped from above and below.

That is, the side plate parts 46c, 46c of the lower sheet metal frame member 46 are stacked on the inside of the arm part 45d145d of the upper sheet metal frame member 45, and the connecting pieces 45e145e, 46f, 46f
are superimposed. At the same time, the notches 46e, 46e of the lower sheet metal frame member 46 are engaged with both right and left ends of the front edge of the top plate portion 45a of the upper sheet metal frame member 45.

Therefore, the mounting holes 45f and 45f that overlap each other.
Insert rivets 47.47 into 46g and 46g, and swage, thereby making the two sheet metal frame members 45.46
are combined to form a cassette holder 44.

Such a cassette holder 44 has an arm 45d,
45d is a support wall 48 protruding from the main chassis 11
．． 49, thereby allowing the cassette holder 44 to move between the eject position shown in FIG.
It can be moved between the mounting positions shown in the figure.

When the tape cassette 1 is inserted into the cassette holding part 44a of the cassette holder 44 at the eject position, both ends of the lower side of the front surface M10 come into contact with the guide parts 46h, 46h. When the tape cassette 1 is further inserted into the cassette holding part 44a,
Both ends of the front cover 10 are pushed up by the guide parts 46h, 46h, and cannot be rotated to the open position. Front lid 1
0 reaches the open position, the top plate 4 of the cassette holding part 44a
The lid return piece 45c provided at the rear edge of the lid 5a is in a state of facing the front surface M10 in a state where it is almost in contact with the front surface M10. Therefore, when the tape cassette 1 is pulled out from the cassette holding part 44,
The front lid 10 is relatively pressed by the lid return piece 45c of the cassette holder 44a and returned to the closed position.

As mentioned above, the tape cassette 1 or the cassette holding part 4
The tape cassette 1 is mounted on the cassette mounting section 27 by rotating the cassette holder 44 inserted into the tape cassette 4a downward. That is, the reel engagement shafts 16.16' of the reel stand 13.14 are engaged with the engagement holes 3a, 3a of the tape reel 3.3 of the tape cassette 1 through the insertion holes 46b, 46b of the cassette holder 44, and the cassette case is closed. The lower side of the cassette support bin 42, 42, 42 rests on the upper end surface of the cassette support bin 42, 42, 42.

(d. Support of Head Drum) Reference numeral 50 denotes a helad 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 51 are fixed to connecting pieces 53, 53 of the support block 52. There is.

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 sliding properties, 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 slot long in the front-rear direction and also formed at the front end of the sliding plate 51.

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, occupying most of the rear half thereof, and both side edges 61, 61 of the chain hole 60 are used as guide edges, extending in the front-rear direction and being parallel to each other. The guide edges 61.61 have rear end portions 61a, 6
fa slightly protrudes 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 61a of the guide edge 61.61 is approximately the same as the spacing.

The distance between the portions 61b, 61b excluding 61a is slightly larger than the distance between the inner surfaces 56a, 56a of the sliding groove 56, 56.

Then, the sliding groove 56.56 of the head base 50 is slidably engaged with the guide edge 61.61 of the sub-chassis 12,
Further, the guide bin 62 implanted in the sub-chassis 12 is slidably engaged with the guide slot 58 of the spatula base 50, and the guide bin 63, which is also not implanted in the sub-chassis 12, is slidably engaged with the guide slot 58 of the spatula base 50.
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.
When engaged with the guide edges 6fa and 61a, the guide edges 6fa and 61a are almost in contact with the inner surfaces 56a and 56a of the sliding grooves 56. Although it will be in a state where there is no sliding fi56.56 is the guide l/
When the head base 50 is engaged with the parts 61b, 61b of J161.61, there is a slight gap between the parts 61b, 61b and the inner surfaces 56a, 56a of the sliding groove 56.56. It will be in a state where it can 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 64 is a drum motor.

64a is a rotating shaft, and the middle drum 22 and the rotor 64b are respectively fixed to the rotating shaft 64a. A rotor magnet 64c is fixed to the rotor 64b. 64d is a stator arranged to face the rotor 64b, and a stator coil 64e is supported so as to face the rotor magnet 64c. 64f is the rotating shaft 6 facing the rotor 64b with the stator 64d in between.
This is the back yoke fixed to 4a.

A drive gear 65 is integrally formed with the lower end of a rotating shaft 64a that protrudes downward from the lower end of the motor 64.

66 is a gear base whose rear end is fixed to the lower end 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 67a 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 drum motor 64 rotates, the two relay gears 68 and 69 rotate in opposite directions, that is, when viewed from above, the FWD system relay gear 68 rotates counterclockwise.
The system relay gears 69 are 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 a shaft 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 drum motor 64 rotates, the capstan 7
2 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 abutments 124a, 25a of the head drum 21 are pressed against the contact surface 8.8 of the tape cassette 1, the head drum 21 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.

(e, Operation Mechanism) Reference numeral 75 denotes a head moving lever, which is formed long in the left-right direction, and whose substantially 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 the head moving lever 75 is rotated, the connecting pin 7
6 will move approximately in the front-back direction, and as a result,
The head base 50, that is, the head tram 21 is moved in the front-back direction.

The head moving lever 7 of the front edge of the head moving lever 75
A suppressed 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 P LAY 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 that protrudes leftward from approximately the middle position in the front-back direction of the PLAY lever 77, and the left end of the rear side edge is a pressing piece ii 78 a that is inclined so as to be displaced toward the front as it goes to the left. Also, the left edge 78b
is a retaining 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 locked 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 the PL
A bow length spring 84 is provided between the spring holder 81 of the AY lever 77 and a rotation force is applied to the head moving lever 75 in the counterclockwise direction when viewed from above. ing. When no force is applied to the head moving lever 75 to rotate it clockwise, the stopper M75b of the head moving lever 75 is brought into contact with the stopper piece 8o of the PLAY lever 77 from the front side. The position of the head moving lever 75 is defined by this.

Reference numeral 85 denotes a tension spring tensioned between the spring holder 82 of the PLAY lever 77 and the main chassis 1, which applies a forward moving force to the PLAY lever 77.

However, while the PLAY lever 77 is not pushed in,
As shown in FIG. 16, the head moving lever 75 is positioned so as to extend substantially in the left-right direction, so that the head drum 21 is positioned at the second position. And P.L.A.
When the Y lever 77 is pushed in as shown in FIG. 17, the right end of the head moving lever 75 is pulled rearward by the PLAYI/bar 77 via the tension spring 84, so that the head moving lever 75 is Since the connecting pin 76 moves substantially forward, the head drum 21 is moved to the first position. Incidentally, until the PLAY lever 77 is unlocked, it is held in the retracted position shown in FIG. 17 by a lock lever to be described later, and accordingly, the head drum 21 is also held in the first position.

Reference numeral 86 denotes a lever 5 that is supported by the main chassis 11 at a position slightly spaced to the left of the PLAY lever 77 so as to be slidable in the front and back direction.
It is a TOP/EJECT lever, and has a pressing protrusion 87 erected thereon. In addition, by means of explosive means (not shown), 5TOP
/EJECTL/ Bar 86 is biased with forward 8!2I force.

Also, 5TOP/EJECT lever 86c7) rear edge 8
6a is a pressing edge. In addition, 86b is 5TOP/E
This is a push button attached to the front end of the JECT lever 86 (7).

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 is a hole long in the front and back direction formed from the center of the lock lever 88 toward the stacked stones, and on the right side edge of the chain hole 89 is a pressed JJ89a that is inclined so as to be displaced to the left as it goes rearward. is formed. In addition, the lock lever
88 is given a leftward movement force by an elastic 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. When the 5TOP/EJECT lever 86 is pushed rearward, the pressing protrusion 87 presses the pressed edge 89a of the lock lever 88, so that the lock lever 88 moves to the right against the elastic force biased against it. be moved towards 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 edge of a projecting piece 90 that protrudes rearward from the right end of the lock lever 88, and the rear 191a of the lock pawl 91 is a lock lip extending in the left-right direction. An edge 91b extending forward from the left end of the lock li 91a is a pressed edge that is 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. 16, 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 PLAY 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. And PLAY
When the lever 77 reaches the push-in position shown in FIG.
Since the locked pin 79a is disengaged rearward from the pressed edge 91b, the locking lever 88 moves to the left due to the elastic force applied thereto, and the locking edge 91a disengages from the pressed edge 91b.
9a, and thereby the PLAY lever 7
Even if the force that was pushing the locking pin 79a backward is removed, the locking pin 79a remains in the locking edge 91a of the locking lever 88.
is engaged from behind, and the PLAY 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 front side of the locked pin 79a of the PLAY lever 77 moves to the right. The lock edge 91a, which was located at
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.
It is rotatably supported by a support piece 94 of. 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 diagonal piece 100 is inserted from the left end of the pressing piece 97 of the relay lever 95.
protrudes toward the left, and a tension spring 101 is tensioned between the spring diagonal piece 100 and a spring diagonal piece 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, and further, as the PLAY lever 77 is moved backward. The regulating piece 99 is in contact with the holding edge 78b of the PLAY lever 77, and is held in a non-relaying position rotated in the clockwise direction from the relaying position.

When the relay lever 95 is in the relay position, the pressed piece 96 is close to the pressing edge 86a of the 5TOP/EJECT lever 86 from behind, and the pressed piece 97 is pressed against the pressed edge 86a of the 5TOP/EJECT lever 86. It closely opposes the portion 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 edge 86a, 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 simply 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 M
85a presses the pressed piece 96 of the relay lever 95 in the relay position backward, so the relay lever 95 is moved rearward together with the support lever 92, and at this time,
Since the pressing piece 97 of the relay lever 95 presses the pressed portion 75a of the head moving lever 75 substantially backward, the head moving lever 75 moves clockwise when viewed from above against the tensile force of the tension spring 84. The head drum 21 is rotated, thereby moving the head drum 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 against 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. There is.

To lock the head base 50, for example, the lock lever 88 is provided with a lock claw that locks the 5TOP/EJECT lever 86 in the pushed position, and the lock lever 88 is locked in the process of moving the cassette holder 44 to the mounting position. This can be realized by any number of means, such as interlocking a cam that moves 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 l5i104a is a locking edge extending in the left-right direction, and an edge 104b extending forward from the left end of the locking 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. 16, 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. 20, the locked piece 102a comes off backward from the pressed edge 104b, so 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 1osb 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 edge 107a is a lock edge extending in the left-right direction, and the edge 107b extending forward from the left end of the lock 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 in 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.
,07b from the front. When the FF lever 105 is pushed in, the locked piece 105a presses the pressed edge 107b of the lock claw 107, so the lock lever 88 is moved to the right. And F.F.
When the lever 105 reaches the push-in position shown in FIG. 21, the locked piece 105a disengages backward from the pressed piece 1107b, so the lock lever 88 moves to the left due to the resilient force applied thereto. The locking edge 107a is located in front of the locked piece 105a, so that even if the force pressing the FF lever 105 backward is removed, the locked piece 105a is engaged with the locking edge 107a from the rear. , the FF lever 105 is 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.

(f. Operation) Next, an overview of the operation of the tape player will be explained.

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 of the relay lever 95. 75a is pressed rearward, the head moving lever 75 is rotated clockwise, causing the head head 50 to move 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. 19 by an unillustrated resilient means.

When the tape cassette 1 is inserted into the cassette holding portion 44a of the cassette holder 44 at the eject position, the 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 44a, the front M
10 is rotated upwards. 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. 16 is a stop state (stop mode), and the relay gears 68, 69 are the play gears 30. 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 and the drum motor 64 of the head drum 21 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, and the drum motor 64
is rotated, thus forming a REW mode 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 8 of the relay gear 68
8b and the large gear 30a of the play gear 30 are properly pressed together. Then, the drum motor 64 is rotated, the reel stand 14 is rotated in the tape winding direction, and a recording and/or reproducing mode is formed.

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, in the cassette holder of the tape player of the present invention, the tape is spanned along the front of the cassette case, and the front side of the tape is freely rotatable to the cassette case. A cassette holder for a tape player that holds a tape cassette covered by a front lid supported by a tape player, the cassette holder being formed by at least two sheet metal frame members, the thickness of one sheet metal frame member being equal to the thickness of the other sheet metal frame member. The tape cassette is made larger in thickness than the other sheet metal frame member, and is characterized in that a guide portion for guiding the front cover of the tape cassette in the opening direction is integrally formed on the other sheet metal frame member.

Therefore, in the cassette holder of the tape player of the present invention, the necessary strength can be obtained by increasing the thickness of one sheet metal frame member, and by decreasing the thickness of the other sheet metal frame member, Processing such as squeezing becomes easy, so costly processing such as Actsart molding is not necessary. Therefore, it is possible to contribute to miniaturization and ensure sufficient strength, and it is also possible to form parts that require drawing. Therefore,
According to the cassette holder for a tape player of the present invention, the cassette holder for a tape player, which has a function of opening the front cover during the process of mounting a tape cassette, has a small number of parts and has sufficient rigidity.
It can be formed at low cost.

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 21 show an example of implementation of the cassette holder of the tape player of the present invention, FIG. 1 is a perspective view of the tape cassette, FIG. 2 is a horizontal sectional view, and FIG. 3 is a diagram of the tape cassette. 5 is a side view, in which (A) shows a state in which the front cover is in a closed position, (B) shows a state in which the front cover is in an open position, FIG. 4 is an exploded perspective view of the tape player, and FIG.
The figure is a perspective view of the gear base, Figure 6 is a perspective view of the cassette holder, Figure 7 is an exploded perspective view of the cassette holder, and Figure 8 is a perspective view of the cassette holder.
The figure is an overall plan view, Figure 9 is a partially cutaway plan view showing the head drum in the first position, and Figure 10 is a partially cutaway plan view showing the head drum in the second position. , Fig. 11 is a partially cutaway plan view showing the head drum in the third position, Fig. 12 is a side view of the main parts showing the cassette holder in the eject position, and Fig. 13 shows the cassette holder in the eject position. FIG. 14 is a side view of the main parts showing the state in which the cassette is installed, and FIG. 14 shows the state in which the tape cassette is inserted into the cassette holder, opened, and then pulled out.
(F) is a partially cutaway side view shown in order; FIG. 15 is a vertical sectional view showing the cross section of the head drum and the gear on the gear base; and FIGS. 16 to 21 are views showing the movement of the operating mechanism. FIG. 16 shows the state in the non-depressed position, FIG. 17 shows the state in the recording and/or playback mode, and FIG. 18 shows the state in the recording and/or playback mode.
Figure 19 shows the EJECT button pressed in, Figure 19 shows the ejected state, Figure 20 shows the rewind mode, Figure 21 shows the fast forward mode, and Figure 22 shows the conventional cassette holder. FIG. Description of symbols 1... Tape cassette, 2... Cassette case, 10... Front cover, 44... Cassette holder tape, 45... One sheet metal frame member, 46... Other sheet metal Frame member, 46h... Guide part 1 similar Ihe 2a Perspective view Fig. 5 Fl/, 1 Exploded perspective view Fig. 7 Fig. 16 Floor plan Fig. 17 Plan view Fig. 18 Fig. 20 Plan view Fig. 21

Claims (1)

[Scope of Claims] A cassette holder for a tape player that holds a tape cassette in which the tape is spanned along the front of the cassette case and the front side of the tape is covered with a front lid rotatably supported by the cassette case. It is formed of at least two sheet metal frame members, the thickness of one sheet metal frame member is larger than the thickness of the other sheet metal frame member, and the front cover of the tape cassette is opened to the other sheet metal frame member. A cassette holder for a tape player, characterized in that a guide portion for guiding the direction is integrally formed.