JPS61187155A - Tape recorder - Google Patents

Abstract

PURPOSE:To simplify tape loading by shifting another loading member interlocking with shifting of a loading member. CONSTITUTION:When an arm turning gear 36 provided with a stopper 39 is rotated counterclockwise by an electrically driven pulley 49, a worm 48, a worm wheel 51, a reduction gear 53, a transmission gear 52 etc., a tape loading member shifting device 29 energized counterclockwise by a leaf spring 44 is rotated in a body, and a tape loading member is shifted to the loading position. At the same time, a slider shifting gear 66 is rotated by the gear 36, and a slider 54 of the shifting member is moved to the left by a rack 60'. Then, another arm turning gear 37 is rotated clockwise by the rack 60', and a corresponding tape loading member shifting device 30 is rotated in a body, and another tape loading member makes interlocked shifting to the loading position. Thus, the constitution of tape loading is made simple and the shape of the tape recorder is made small.

Description

DETAILED DESCRIPTION OF THE INVENTION The tape recorder of the present invention will be explained according to the following items.

A. Industrial field of application B99 Summary of the invention C6 Background art W1 Problems to be solved by the invention E6 Means for solving the problems F. Embodiment a Mechanical chassis [Figs. 1 to 5, Figures 8 and 9] b. Head drum [Figures 1 to 4] C. Reel stand [
Figures 1 to 4, Figure 8 1d, Tape loading member [Figures 1 to 5, Figure 9
Figure] e. Tape loading member moving means [Figures 4 to 6
] f, Motor [Figures 1, 2, and 4] g, Moving member [Figures 1 to 4, and 6] h, Movement during tape loading i, Movement during tape unloading j, Tape guide [Figures 1 to 3] k, Tension regulator [Figures 1 to 3, Figure 8] t, Constant speed traveling mechanism [Figures 1 to 3, Figure 7] m , Brake mechanism [Fig. 1 to 4, Fig. 8 J n, Tape cassette [Fig. 81, Fig. 2] 0, Operation 0-1. Tape loading operation O-2, tape unloading operation G6 Effects of the invention (A. Field of industrial application) The present invention relates to a novel tape recorder. For more information,
The magnetic tape stored in the tape cassette is pulled out from the cassette case and is wound around a head drum equipped with a magnetic head at a predetermined winding angle for recording or playback.The magnetic tape is wound around the head drum using the tape cassette. The present invention relates to a tape recorder in which two tape loading members located inside a magnetic tape located on the front surface of a tape recorder are moved to predetermined positions with respect to a head drum.

(B. Summary of the Invention) The tape recorder of the present invention has a tape loading member moving means that separately moves two tape loading members for pulling out a magnetic tape from a tape cassette and winding it around a magnetic head, using one tape loading member moving means. The movement of the tape loading member moves the other tape loading member moving means by a simple power transmission means, thereby simplifying the tape loading mechanism and reducing the overall shape of the tape recorder. This allows it to be made smaller.

(C. Background Art) For example, in a small video tape recorder called a home video, the magnetic head is generally moved in a direction diagonal to the running direction of the magnetic tape in order to increase the recording density on the magnetic tape. By scanning,
Recording and reproduction is now performed by a so-called helical scanning method in which a video signal is recorded while forming diagonal tracks on a magnetic tape and is reproduced while scanning the diagonal tracks. In addition, a recently proposed method is ffPcM (Pulse Code Modification).

It has also been considered to perform recording and reproduction using the above-mentioned helical scanning method in audio tape recorders and the like using the recording method.

Recording and playback in a tape recorder that performs recording and playback using such a helical scanning method usually involves running a magnetic tape wound around a head drum equipped with a magnetic head for recording and playback at a predetermined winding angle. This is done by pressing the magnetic head and rotating the magnetic head.

Therefore, such a tape recorder is provided with a mechanism for pulling out the magnetic tape stored in the tape cassette from the cassette case and winding it around the head drum at a predetermined wrapping angle, that is, a tape loading mechanism. , this tape loading mechanism winds the magnetic tape around the head drum by moving the tape loading member, which is normally located inside the magnetic tape located at the front of the tape cassette, to a predetermined position relative to the head drum. It is configured so that it can be done.

There have been various types of tape loading mechanisms, one of which is to move the two tape loading members from the above-mentioned position in the tape cassette to a predetermined position 1 relative to the head drum. The magnetic tape is wound around the head drum by moving the two tape loading members to positions on both sides, and two rotating arms (sometimes referred to as "swinging arms") that support them separately are used to move the two tape loading members. There is a method (sometimes referred to as "parallel loading") that performs this by rotating a predetermined amount.

(D. Problem to be Solved by the Invention) The tape loading mechanism configured in this manner allows the tape loading member and the members that support it to be moved to be compact, and also allows the tape loading member to be moved while supporting it. Although there is an advantage that the moving distance of the member is short, there is a problem that, for example, the drive system for driving the two rotating arms described above is complicated and large.

That is, as mentioned above, since the two tape loading members are moved from positions within the tape cassette to positions on substantially both sides of the head drum, one rotating arm for moving the members is usually attached to the tape cassette. They are spaced apart from each other on both sides of the line connecting the mounting portion of the drum and the heel 2 drum.

Therefore, it is necessary to drive one of the rotating arms by a motor, and to drive the other rotating arm by extracting power from the motor or one of the rotating arms via some kind of power transmission means. Conventionally, in order to drive the other rotating arm, for example, one rotating arm and the other rotating arm were connected by a transmission mechanism including a plurality of transmission gears. According to this structure, in order to reduce the number of transmission gears, it is necessary to increase the diameter of each transmission gear, and if you try to reduce the diameter of the transmission gear, the number of transmission gears increases. Therefore, in any case, the drive system for driving the rotating arm is complicated.

Moreover, the tape loading mechanism becomes larger.

As described above, in conventional tape recorders of this type, the tape loading mechanism occupies a large proportion of the overall size of the tape recorder, and this has been one of the reasons for preventing tape recorders from being made smaller.

In addition, since conventional tape recorders connect two rotating arms via a transmission gear, the position where the rotating arms are installed is restricted to some extent by the meshing relationship with the transmission gear. However, there are problems in that it is difficult to place the rotating arm in a desired position, and furthermore, the above-mentioned transmission gear etc. are placed between the position where the tape cassette is installed and the head drum, making it difficult to install the tape cassette. Another problem was that it became difficult to shorten the distance between the tape cassette and the head drum.

(E. Means for Solving the Problems) Therefore, in order to solve the above-mentioned problems, the tape recorder of the present invention has a tape recorder that is placed on the front part of the tape cassette in order to wind the magnetic tape around the head drum. Two tape loading member moving means are provided which move two tape loading members that move from a position inside the magnetic tape to a predetermined position with respect to the head drum and are located apart from each other, and one tape loading member moving means is provided. The other tape loading member moving means is driven by a motor.

The tape loading member is operated via a moving member that is moved by one tape loading member moving means.

Therefore, according to the present invention, the two tape loading member moving means for moving the two tape loading members separately can be connected to each other by one moving member, so that tape loading can be performed. The mechanism can be constructed with a minimum number of parts.

(F. Embodiment) The details of the tape recorder of the present invention will be explained below according to the embodiment shown in the drawings.

1 in the figure is a tape recorder to which the present invention is applied.
゛(a, Mechanical chassis) [Fig. 1 to wIJS, Fig. 8, Fig. 9] 2 is a mechanical chassis, and the front end of the mechanical chassis 2 (the downward direction in Fig. 1 is the front side, and the upper The direction toward the rear side is defined as the rear side. In addition, the direction toward the left in the figure is defined as the left side, and the direction toward the right is defined as the right side. In the following explanation, directions will be referred to in this direction.) A relatively large opening 3 for arranging a reel stand, which is long in the left-right direction, is formed at a closer position. In addition, 4 is a subchassis (
(see FIG. 4), and the sub-chassis 4 has connecting pins 5.
5.5, etc., and is spaced apart from the mechanical chassis 2 by a predetermined distance and is integrally fixed thereto.

(b, Head Drum) [FIGS. 1 to 4] 6 is a head drum disposed at the rear end of the mechanical chassis 2. As shown in FIGS. Although not shown, the head drum 6 consists of a lower drum and an upper drum. The lower drum is fixed to a drum support 7, and the upper drum is rotatably supported. , a magnetic head for recording and reproduction is provided,
During recording and reproduction, the upper drum is rotated by a drum motor (not shown).

(c, Reel stand) [Figures 1 to 4, Figure 8 1 8 and 9 are reel stands for rotating tape reels of a tape cassette, which will be described later, and the reel stands 8 and 9 are spaced apart from each other in the left and right direction. At the same time, it is rotatably supported by a reel stand support shaft erected from the sub-chassis 4. The reel stands 8 and 9 have a reel mounting section 10.10' at the upper end and a brake drum section 1 at the lower end.
1.11' and an intermediate drum part 12.12' are integrally formed, and a reel engaging shaft whose upper end protrudes upwardly from the reel mounting parts 10, 10'' is provided at its axial center. 13
．． 13' is provided.

14.14.14 and 14', 14', and 14' are engagement protrusions formed on the outer peripheral surfaces of the reel engagement shafts 13 and 13', and 15.15' is a gear portion.

Then, one of the reel stands 8 and 9 is rotated in a predetermined direction according to a predetermined tape running mode by a swing gear (not shown) that is removably engaged with the gear portions 15 and 15'. It looks like this.

Of the reel stands 8 and 9, the one on the left side 8 is the supply side reel stand (hereinafter referred to as the "S side reel stand"), and the one on the right side 9 is the take-up side reel stand (hereinafter referred to as the "T side reel stand"). ''), and the upper part of the middle drum part 12, 12' of both the S-side and T-side reel stands 8, 9 projects upward from the opening 3 of the mechanical chassis 2. It is located in

(d, tape loading member) [Figures 1 to 5,
[FIG. 9] Reference numerals 16 and 17 are long guide holes formed in the mechanical chassis 2, and these long guide holes 16 and 17 are for guiding the moving direction of a moving block, which will be described later. These elongated guide holes 16 and 17 are located on both the left and right sides of the front part of the drum support 7, and are arranged so as to form an approximately inverted V shape, and the one on the left side is approximately the same. It is slightly bent at the middle part, and the one on the right side 17 extends substantially straight. The front ends of these guide slots 16 and 17 are located at some distance to the rear from the opening 3 for arranging the reel stand, and each rear end passes through the center of the head drum 6 in the left-right direction. It is located approximately on a straight line.

Reference numerals 18 and 19 indicate positioning blocks disposed close to the respective rear edges of the guide elongated holes 16 and 17, and the positioning blocks 18 and 19 have contact pieces 20 and 20 projecting approximately horizontally from their upper ends. ' and mounting pieces 21.21 and 21', 21' protruding from the lower end are integrally formed, and the contact pieces 20 and 20' have approximately V-shaped notches 2.
2.22' is formed. These positioning blocks 18 and 19 are positioned such that their abutting pieces 20 and 20' face above the rear ends of the guide elongated holes 16 and 17 (see FIG. 9), and their mounting pieces are 21.21
and 21', 21' are fixed to the mechanical chassis 2 by fixing means such as screws.

23 and 24 are moving blocks. The moving block 2
3 and 24 have a certain degree of thickness, and tape guide posts 25 and 25', which function as tape loading members, are provided upright from their rear ends. Further, a portion of the left moving block 23 near the right edge and a portion of the left moving block 24 that protrudes substantially toward the left side are formed at a certain level of height, and the inclined guide post 26 and 26' is erected.

Connecting shafts 27 and 27' having diameters equal to the width of the guide elongated holes 16 and 17 project downward from the front ends of the moving blocks 23 and 24, respectively.
7 and 27' are slidably engaged with the guide elongated holes 16 and 17, and a retaining member such as a washer is engaged with the upper end of the portion projecting downward from the guide elongated holes 16 and 17. ing.

Therefore, the moving blocks 23 and 24 have their connecting shafts 27
and 27' are moved along the guide slots 16 and 17 by being moved while being engaged with the guide slots 16 and 17.

(e. Tape loading member moving means) [FIGS. 4 to 6] Reference numeral 28 denotes a block moving mechanism for moving the moving blocks 23 and 24. Most of the block moving mechanism 28 is located on the lower surface of the mechanical chassis 2. The movable block 2 is provided at
3.24, two rotating arms connected to each other separately, two arm driving gears that rotate the rotating arms, a motor and a number of reduction gears that drive one of the arm driving gears, and one arm. It is composed of a slider and the like that connects the drive gear and the other arm drive gear so that they are interlocked with each other.

29 and 30 are rotating arms connected to the moving blocks 23 and 24;
has a substantially symmetrical shape. These pivot arms 29, 30 function as tape loading member moving means.

If the rotating arms 29 and 3o are formed into a plate shape whose width becomes narrower from the base end to the distal end, the rotation arms 29 and 3o will be approximately 47L.
3t self ML de Machi 1 self Hatake + a meeting Jff
4'21 9 1' Hanawa (joy)
An engagement elongated hole 32.32' extending along the longitudinal direction of the rotating arm 29.30 is formed at the tip end. The base end edges of the rotating arms 29 and 30 are approximately 4
It is a straight line that extends perpendicularly to the longitudinal direction of the rotating arm 29.30 through a curved edge in the shape of a quarter arc, and the front straight line 33.33' corresponds to the stopper bin of the arm drive gear, which will be described later. It is said to be a contact edge that touches. Furthermore, hooks 34 and 34' are integrally formed with the spring hooks that protrude downward from the proximal edges of the rotating arms 29 and 30 in an oval shape.

35.35' is an arm support shaft that rotatably supports the rotating arms 29 and 30;
35' is provided to protrude downward from a position spaced from each other laterally at approximately the center in the front-rear direction on the lower surface of the mechanical chassis 2. As shown in FIG.

The rotation arms 29 and 30 have their insertion holes 31.3.
By inserting the arm support shaft 35.35' into 1', the arm support shaft 35.35' is rotatably supported.
A connecting shaft 27 protruding from the left moving block 23 is slidably engaged with the rotating arm 3 on the right side.
A connecting shaft 27' protruding from the right moving block 24 is slidably engaged with an engagement elongated hole 32' formed at 0.

36.37 is an arm rotation gear that rotates the arm 29.30, and an insertion hole 38.38' is formed in the axial center of the gear, and a stopper bin 39.39 is formed from the bottom surface of the gear.
' is provided protrudingly.

In addition, the positions where the stopper bins 39 and 39' are protruded are as follows:
The lower surface of the arm rotation gear 36.37 is located at the middle part of the proximal edge of the rotation arm 29.30, that is, on a circumference having a slightly larger diameter than the arc of the approximately arc-shaped portion. .

Of the arm rotation gears 36 and 37, the left one 36 has its insertion hole 38 inserted into the left arm support shaft 35.
is inserted between the mechanical chassis 2 and the rotating arm 29, and the right one 37 is inserted into the insertion hole 3.
The right arm support shaft 35' is inserted between the mechanical chassis 2 and the rotating arm 30.

Reference numerals 40 and 41 are spring-wrapped plates formed in a substantially disk shape, and the spring-wound plates 40 and 41 have an insertion hole 42 at their axial center.
．． 42' is formed, and annular grooves 43 and 43' are formed on the outer peripheral surface thereof. Of these spring-wound plates 40 and 41, the left one 40 has its insertion hole 42.
The left arm support shaft 35 is inserted under the rotating arm 29, and the right arm support shaft 35' is inserted into the insertion hole 42' of the right arm support shaft 41. It is disposed below the rotating arm 30 in this state.

In addition, a release-preventing member such as a release-preventing washer is engaged with a portion of the arm support shafts 35 and 35' that protrudes downward from the insertion hole 42.42' of the spring-wrapped plate 40.41. , thereby arm rotation gears 36, 37. The rotating arm 29.30 and the spring-wound plate 40.41 are prevented from being removed from the arm support shaft 35.35'.

Reference numerals 44 and 45 denote coil springs, and among these coil springs 44 and 45, the left one 44 is wound about two-thirds of the way around a groove 43 formed in the left spring winding plate 40, and one end thereof is the left rotation arm 2
9, and the other end is hooked to a stopper pin 39 protruding from the left arm rotating gear 36. The coil spring 45 on the right side also has a groove 43' formed in the spring winding plate 41 on the right side.
The spring hook 34 is wound around about two-thirds of the circumference around the body, and one end of the spring hook is formed on the right rotating arm 30.
', and the other end is connected to a stopper pin 39' protruding from the arm rotating gear 37 on the right side.

As a result, the left rotating arm 29 is always biased with a rotating force that tends to rotate counterclockwise with respect to the arm rotating gear 36, and the abutting edge 33 of the left rotating arm 29 is pressed against the stopper bin 39. By contacting the arm, the position relative to the arm rotation gear 36 is maintained. Similarly, the right rotating arm 30 is connected to an arm rotating gear 37.
, the rotational force that always tries to rotate one clockwise direction is applied, and the abutment @33' abuts against the stopper bin 39', so that the arm rotation gear 3
The position relative to 7 will be maintained.

Therefore, the pivoting arms 29, 30 are connected to the arm pivoting gear 3 while no force is applied thereto to prevent their pivoting.
It will be rotated integrally with 6.37.

(f, motor) [Figures 1, 2, 4] 46 is a loading motor arranged along the rear end of the left edge of the upper surface of the mechanical chassis 2, and the output of the loading motor 46 A drive pulley 47 is attached to the shaft. Further, 48 (see FIG. 4) is a worm rotatably provided on the lower surface of the mechanical chassis 2 at a position substantially corresponding to the position where the loading motor 46 is disposed.
A driven boob 949 is attached to the shaft of the worm 48, and the driven pulley 49 and the loading motor 4
A belt 50 is passed over the drive pulley 47 of No.6.

51 is a worm wheel meshed with the worm 48, 52 is a transmission gear meshed with the left arm rotating gear 36, and the transmission gear 52 is connected to a large number of reduction gears 53.
It is meshed with the worm wheel 51 via 53 and 53.

Therefore, the rotational force of the loading motor 46 is generated by the drive pulley 47 - the bell) 50 - the driven pulley 49 - the worm 48
- Worm wheel 51 - Reduction gear 53.53.53 -
The signal is transmitted to the left arm rotation gear 36 via the transmission gear 52, and the left arm rotation gear 36 is thereby rotated, so that the left rotation arm 29 is rotated in a predetermined direction. Become.

Note that when the loading motor 46 is rotated forward, the left arm rotation gear 36 is rotated counterclockwise, so in this case, the left arm rotation gear 36 is rotated counterclockwise.
is rotated counterclockwise (hereinafter referred to as the "tape loading direction"), and when the loading motor 46 is reversed, the left arm rotation gear 36 is rotated clockwise. In this case, the left rotation arm 29 is rotated in the clockwise direction (hereinafter referred to as the "tape unloading direction").

Cpr, moving member) [Figures 1 to 4, and 6] 54 is a slider for connecting the arm rotation gear 36 on the left side and the arm rotation gear 37 on the right side so that they interlock with each other. Yes, it functions as a moving member. The slider 54 is formed in a plate shape long in the left-right direction, and
A guide elongated hole 55 extending along the left and right direction approximately in the center thereof
is formed, and pressing bins 56.5 are formed from both left and right ends.
7 is provided to protrude upward. 58 and 59 are rack plates having racks 60 and 60' formed on their rear edges, and the racks 60 and 60' of the radars 58 and 59 protrude rearward to some extent from the rear edge of the slider 54. It is fixed to both left and right ends of the slider 54 with screws 61, 61, . . . in this position. In addition, the front side surfaces 62a and 63a, which serve as cam surfaces, are located at approximately the center and right end portions of the front edge of the slider 54.
Cam parts 62 and 63 located forward of the side surface are integrally formed.

The slider 54 has the pins 5 and 5 connecting the mechanical chassis 2 and the sub-chassis 4 in the guide slot 55.
．． Of the 5, the one located close to the rear edge of the reel stand arrangement opening 3 formed in the mechanical chassis 2 is slidably engaged, and the pressing pins 56 and 57 are attached to the mechanical chassis 2. It is slidably engaged with guide elongated holes 64 and 65 formed in 2. In addition, the guide long hole 64.65
is formed to extend in the left-right direction along a line that is slightly spaced to the rear of a line that extends along the rear edge of the opening 3 for reel stand placement in the portions of the mechanical chassis 2 near the left and right edges. There is.

Thereby, the slider 54 is supported on the lower surface of the mechanical chassis 2 so as to be slidable in the left-right direction.

The rack plate 58 provided on the slider 54
．． A rack 60 formed on the left side 58 of the 59 is meshed with the left arm rotating gear 36 via a slider moving gear 66 rotatably supported at a predetermined position on the lower surface of the mechanical chassis 2. , also the one on the right 59
A rack 60' formed in is meshed with the arm rotating gear 37 on the right side.

When the left arm rotation gear 36 is rotated as described above, the slider moving gear 66 is rotated, thereby moving the slider 54 in the left-right direction, and the right arm rotation gear 37 is rotated. is rotated. When the left arm rotating gear 36 is rotated counterclockwise, the slider moving gear 66
is rotated clockwise, the slider 54 is moved toward the left, and therefore the right arm rotation gear 37 is rotated clockwise, thereby causing the right rotation arm 30 to rotate clockwise. is rotated clockwise (hereinafter referred to as the "tape loading direction"). Further, when the left arm rotation gear 36 is rotated clockwise, the slider moving gear 66 is rotated counterclockwise, so the slider 54 is moved toward the right. , the right arm rotation gear 37 is rotated counterclockwise, and thereby the right rotation arm 30 is rotated counterclockwise (hereinafter referred to as "tape unloading direction"). become.

That is, the left rotation arm 29 is spaced apart from each other.
The right rotating arm 30 is the arm rotating gear 36.37
, the slider 54 and the slider moving gear 66, and are synchronously rotated in both the tape loading direction and the tape unloading direction.

(h, Movement S during tape loading) When the two moving blocks 23 and 24 described above come to the positions shown in FIGS. 1, 4, and 5 (hereinafter referred to as "non-loading position"), When the loading motor 46 is rotated forward from the state where the
0 are respectively rotated in the tape loading direction, the moving blocks 23 and 24 are rotated by their connecting shafts 27 and 27'.
is pressed substantially rearward by one side edge of the engagement elongated hole 32.32' of the rotating arm 29.30,
The guide slots 16 and 17 formed in the mechanical chassis 2
The object will be moved almost backwards along the . and,
The moving block 23.24 has a substantially V-shaped notch 22.22 formed in the positioning block 18.19 from which the tape guide post 25.25' is erected.
By coming into contact with ', it is prevented from moving further backwards. Therefore, in this state, the moving block 2
3.24 is prevented from moving backwards, the pivot arm 29.30 is also prevented from pivoting further in the tape loading direction. The loading motor 46 has moving blocks 23 and 24 (tape guide bosses) 25 and 25' as positioning blocks 1 and 25, 25' respectively.
When it comes to the position where it comes into contact with the notch 22, 22' of 8.19 (hereinafter referred to as the "loading completion position"), it is stopped, and from this state a command to perform recording or reproduction is issued. It is further rotated forward to some extent. Accordingly, the arm rotation gears 36, 37 will be rotated further. Then, the arm rotation gear 36.37 is in the position shown in FIG.
When the loading motor 46 is rotated to a certain distance from the contact edges 33, 33' of the loading motor 46, the rotation of the loading motor 46 is stopped. In this way, the arm rotation gear 36.37
The stopper pin 39.39' of the rotation arm 29.30
33, 33', the tension of the coil springs 44, 45 acts to further rotate the pivot arm 29, 30 in the tape loading direction; therefore, in this state, the movement Block 23.
24 is the tape guide post 25.25 installed upright on this
' is pressed against the V-shaped notch of the positioning block 18, 19 by the tensile force of the coil springs 44, 45, and is stably held at the loading completion position.

(i. Movement during tape unloading) Also, when the loading motor 46 is reversed from the state shown in FIG. 2, the left arm rotation gear 36 is rotated clockwise, and the right arm rotation gear The gear 37 is rotated counterclockwise, and its stopper pin 39, 39' is rotated.
When the rotating arms 29, 30 come into contact with the contact edges 33, 33' of the moving arms 29, 30, the rotating arms 29, 30 begin to rotate in the tape unloading direction. This allows the moving block 23.24 to move through the guide elongated hole 16.17.
It will be moved approximately forward along the direction. and,
When the arm rotation gears 36, 37 are rotated to a position that returns the moving blocks 23, 24 to the non-loading position, the rotation of the loading motor 46 is stopped.

Note that 67 is a rotary encoder provided below the left edge of the mechanical chassis 2, and a rotation detector (not shown) of the rotary encoder 67 is rotated by the left arm rotation gear 36. The rotation of the loading motor 46 is controlled according to the rotation angle of the left arm rotation gear 36 detected by the rotary encoder 67.

By the way, when the movable blocks 23 and 24 are moved rearward as described above, the tape guide posts 25 and 25'' installed upright thereon move the magnetic tape from the tape cassette, which will be described later, mounted on the tape recorder 1. These operations will be described later.

(j, tape guide) [Figures 1 to 3] 68.69
．． 70 and 71 are tape guide posts fixed at predetermined positions on the upper surface of the mechanical chassis 2, and among these tape guide posts 68, 69, 70 and 71, the first tape guide post 68 is attached to the left positioning block 18.
The second tape guide post 69 is provided at a position approximately midway between the left positioning block 18 and the first tape guide post 68. Further, the third tape guide post 70 is provided at a position slightly diagonally forward to the right from the right positioning block 19, and the fourth tape guide post 71 is provided at a position slightly to the right of the third tape guide post 70. It is located at a distance toward the front.

(k, tension regulator) [Figs. 1 to 3, Fig. 8] 72 is a tension gear arm. The tensile gear arm 72 is bent in an abbreviated shape, and its base end is rotatably attached to a support shaft 73 erected from the front end of a portion near the left edge of the upper surface of the mechanical chassis 2. In addition to being supported, a telescope bin 74 is erected from its rotation end.

The other end of a tension spring 76, one end of which is supported by the front end of the mechanical chassis 2, is engaged with a spring hook 75 that protrudes from the base end of the balance gear arm 72 toward the anti-rotation end. Reference numeral 77 designates a ten-leg gear band, the middle part of which is wrapped around the drum part 12 of the S-side reel stand 8 about half a circumference, and one end of which is moved to a certain extent closer to the rotation end than the part supported by the support shaft 73 of the ten-leg gear arm 72. It is fixed to a band connector 78 that is rotatably supported in a position, and the other end is fixed to a band adjustment block 79 provided on the upper surface of the mechanical chassis 2.

In addition, in the non-loading state, the balance gear arm 72 is pressed from the left side by one side edge thereof by the left pressing pin 56 erected from the slider 64.
It is held at the position shown in FIG. 1, and when tape loading is performed, it is moved to the position shown in FIG. 2 or 3 by the tensile force of a tension spring 76.

(L, constant speed traveling mechanism) [Figures 1 to 3, Figure 7 1 80 is a capstan. The capstan 80 is erected from a flywheel (not shown) disposed below the mechanical chassis 2, and its upper portion projects upward from the mechanical chassis 2 through an insertion hole (not shown) formed in the mechanical chassis 2. At the same time, it is rotated by a capstan motor (not shown) when a command to perform recording or reproduction is issued.

Reference numeral 81 denotes a pinch roller arm, and the pinch roller arm 81 is formed in a substantially rectangular shape, and a substantially rectangular engagement hole 82 is formed at a substantially bending point position of the L shape.
Spring Kakegawa 83 from the approximate bending point of the L shape on the outer side edge
is installed protrudingly. A roller support shaft 84 is erected from one end of the pinch roller arm 81, and a pinch roller 85 is rotatably supported by the roller support shaft 84. A pinch roller arm support shaft 87 erected from approximately the center in the front-rear direction of the right edge portion of the mechanical chassis 2 is inserted into an insertion hole 86 formed at the other end of the pinch roller arm 81. KotoK
It is supported in a more rotatable manner.

88 is a limiter arm connected to the pinch roller arm 81 via a spring.

The limiter arm 88 is arranged under the pinch roller arm 81 so as to be overlapped with the support shaft 87, with the support shaft 87 inserted through an insertion hole 89 formed at its base end. The end is slightly wider than the base end. An engagement pin 90 is erected from the rotating end of the limiter arm 88, and a spring hook 91 is protruded from one side of the rotating end. The portion opposite to 91 is a substantially claw-shaped pressed portion 92 .

Then, the engagement pin 90 erected from the limiter arm 88 is positioned in the retaining hole 82 formed in the pinch roller arm 81, and the spring hook 83 of the pinch roller arm 81 and the limiter arm 88 are connected to each other. A tension spring 93 is passed between the spring hanging river 91 and the frame. Therefore, the pinch roller arm 81 and the limiter arm 88 are connected so as to be pulled together by the tension spring 93, and the engaging pin 9 of the limiter arm 88
0 and the side edge of the engaging hole 82 of the pinch roller arm 81 on the side opposite to the pinch roller 85 come into contact with each other, so that the mutual positional relationship between the pinch roller arm 81 and the limiter 7-m 88 is maintained. ing.

94 is a counter-engaging pin 9 extending from the base end of the limiter arm 88.
95 is a spring hanging pin that was installed on the upper surface of the mechanical chassis 2 at a diagonally rear right position of the fourth tape guide post 71. A tension spring 96 is installed between the spring hook pin 95 and the spring hook 94 on the base end side of the limiter arm 88.
However, the bridge has been passed.

Thus, the limiter arm 88 has a tension spring 9
6 always applies a rotational force in the counterclockwise direction, and this rotational force is applied to the tension spring 9.
3 to the pinch roller arm 81.

The pinch roller arm 81 is held in the position shown in FIG. 1 by the limiter arm 88 coming into contact with a stopper (not shown) in the non-loading state.
When tape loading is performed, the slider 54 is moved to the position shown in FIG. 2 or 3.

(m, brake #l! configuration) [Figures 1 to 4, Figure 8 1 97 and 98 are brakes for applying a light brake until the tape loading is completed on the reel stands 8 and 9. It is an arm.

These brake arms 97 and 98 have brake pieces 100 and 1 with brake shoes 99 and 99' attached to one side.
00'', a control piece 102.102' with a pressed pin 101.101' erected at the tip, and a spring hook 103.103.
′ are integrally formed.

And the left brake arm 97 is the brake piece 1
00, the control piece 102, and the spring hook 103 intersect on a support shaft 104 that is erected from a position slightly to the left of the center in the left-right direction of the rear edge of the sub-chassis 4. The brake arm 98 on the right side has a part where the brake piece 100', the control piece 102', and the spring hook 103' intersect, which corresponds to the T-side rail base 9 of the sub-chassis 4. It is rotatably supported by a support shaft 105 erected from a position slightly diagonally rearward to the right. Reference numeral 106 denotes a spring hook pin erected from a position substantially rearward of the position corresponding to the T-side stool 9 in the sub-chassis 4, and this spring hook pin 106 and the spring hook 103 of the left brake arm 97 are connected to each other. A tension respring 107 is placed between the racks. Also, 1
Reference numeral 08 denotes a spring-loaded pin which is installed from a position on the sub-chassis 4 that is a certain distance to the right and forward of the position corresponding to the T-side stool 9, and is located between the spring-loaded pin 108 and the brake arm 98 on the right side. A tension spring 109 is passed between the frame and the spring hook 103'.

Therefore, the brake arms 97 and 98 are always biased with rotational force in the clockwise direction by the tension springs 107 and 109, respectively, and the suppressed pins tot and tot' are not pressed forward. Between the brake shoes 99 and 99', the tension springs 10 are attached to the bushiki drum parts 11 and tt' of the reel stands 8 and 9.
The contact is made with moderate pressure obtained by a tensile force of 7.108.

Note that the pressed pins 101. of the brake arms 97 and 98.
101' is the slider 5 when the brake shoe 99.99' is in contact with the reel stand 8.9.
1 is located close to the front edge of 4.

(n, Chief Casella)) [@Figure 1, 2nd rII
l] Note that 110 is a tape cassette that is detachably attached to the tape recorder 1. Reference numeral 111 denotes a relatively thin, substantially box-shaped cassette case, and the front surface of the cassette case 111, that is, the surface facing the head drum 6 when attached to the tape recorder 1, is provided with a recess for drawing out the tape. 112 is formed, and the recess 112 is covered by a front cover (not shown) which can be opened and closed.

Reference numerals 113 and 113' denote tape outlets formed on both sides of the tape drawer recess 112 on the front surface of the cassette case 1111, and tape guide posts are provided at positions near the tape drawer recess 112 of the tape outlet 113 and 113'. 1
14.114' are provided. Although not shown in the drawings, two tape reels are rotatably provided within the cassette case 111 and spaced apart from each other.

Reference numeral 115 denotes a magnetic tape, both ends of which are fixed to tape reels (not shown), and a predetermined amount of tape is wound around the tape. is being passed through. That is,
In this state, the magnetic tape 115 is pulled out from the supply side tape reel (not shown), and the cassette case 111
The tape is guided out of the cassette case 111 from the tape outlet 113 on the left side, passes through the front part of the tape drawer recess 112, and is introduced into the cassette case 111 from the tape outlet 113' on the right side. It is wound on a reel.

Therefore, the tape cassette 110 is transferred to the tape recorder 1 with the magnetic tape 115 passed through the above path.
will be installed on the Incidentally, when the Chief Casera) 110 is attached to the tape recorder 1.

Two reels are placed on the reel mounting portion 1O of the reel stands 8 and 9.
At the same time as it is *fled to 110', the reel L! FI#
! ? tfiff, ΔML"I)-II/AQQ/7'1
II-II/A-S-coupling shaft 13.13' comes to be engaged, whereby the supply side reel is rotated integrally with the S side reel stand 8, and the take-up side reel is rotated on the T side. It is in a state where it is rotated integrally with the stool table 9. The cassette case 111 is positioned with respect to the tape recorder 1 by inserting a positioning bin (not shown) provided on the mechanical chassis 2 into a positioning hole (not shown) formed therein, and a front cover (not shown) is opened. You will be able to do it.

(o, operation) Therefore, the tape recorder 1 configured as described above
Tape loading operation, tape unloading operation, ten leg arm 72, pinch roller arm 8
1. Movement of the brake arms 97 and 98 is performed as follows.

Co-1, Tape Loading Operation) First, the tape loading operation and the accompanying movement of each moving member will be described.

The tape cassette 11O is installed in the tape recorder 1 in the state shown in FIG. 1, that is, in the non-loading state. Then, tape cassette 11 is placed in the tape recorder l.
0 is attached, the tape guide post 25.25' and the inclined guide post 26.26', which are set upright from the moving block 23.24, the ten leg pin 74, and the pinch roller 85 all move toward the tape drawer of the tape cassette 110. The magnetic tape 115 is located inside the recess 112, that is, inside the magnetic tape 115 that has been pulled out of the cassette case 111.

Therefore, when a command to perform tape loading is given, the loading motor 46 is rotated in the normal direction, and as a result, as described above, the rotating arms 29 and 30 are respectively rotated in the tape loading direction, so that the moving block 23 and 30 are moved rearwardly along the guide slots 16.17. Then, the magnetic tape 115 stored in the tape cassette 110 is pulled rearward by the tape guide post 25.25'', which moves the portion located on the front side of the cassette case 111 rearward, so that the magnetic tape 115 stored in the tape cassette 110 is pulled backward by the tape guide post 25.25''. They will be pulled out from there.

Then, when the moving blocks 23 and 24 reach the loading completion position, that is, the position where the tape guide post 25.25' abuts the notch 22.22' of the positioning block 18.19, the arm rotation at this time is completed. The rotation angle of the moving gear 36 is detected by the rotary encoder 67,
The rotation of the loading motor 46 is stopped by the detection signal.

While the moving blocks 23 and 24 are moved from the non-loading position to the loading completion position, the slider 54 is moved from the position shown in FIG. 1 to the position shown in FIG. Arm 81 and brake arms 97 and 98 will be moved to the position shown in FIG. That is, by moving the slider 54 to the left from the position shown in FIG.
is moved to the left, the tensile gear arm 72 is rotated counterclockwise by the tensile force of the tension spring 76, and the pinch roller arm 81 is moved to the left side.
8 is pressed by the pressing pin 57 on the right side, thereby rotating clockwise. Also,
The left brake arm 97 has its pressed bottle 101 pushed forward by the cam part 62, and the right brake arm 98 has its pressed bottle 101' pushed forward by the cam part 63, and their cam surfaces 62a, 63a. Since they can be brought into contact with each other, they can each be rotated counterclockwise. by this,
The ten-leg gear arm 72 has its ten-leg gear pin 74 connected to the first gear arm 72.
The pinch roller arm 81 is moved to a position where its pinch roller 85 is slightly diagonally forward to the left from the capstan 80. Also, the brake arm 97,98 is connected to its brake shoe 99.
．． 99' is the brake drum part 11.1 of the reel stand 8.9
It will be moved to a position slightly apart from 1'.

This state, ie, the state shown in FIG. 3, is the step state. In this stopped state, the magnetic tape 115 pulled out from the cassette case 111 is caused to travel along a running path shown by a thick two-dot chain line in FIG. That is, after the magnetic tape 115 exits from the tape exit on the left side of the cassette case 111 to the outside of the cassette case 111,
When the tape guide post 68 and the second tape guide post 69 are brought into contact with the right side portions of the tape guide post 68 and the tape guide post 69 of the second tape guide post 69 are wrapped around the tape guide post 25 of the left moving block 23 for about half a circumference, the tape guide post 68 is turned back. After contacting the inclined guide post 26, it is wrapped around the portion of the outer peripheral surface of the head drum 6 that faces substantially forward, and after leaving the head drum 6, the moving block 2 on the right side
When the tape comes into contact with the inclined guide post 26' of No. 4 and is wound approximately half a circumference around the tape guide post 25', it is again folded back forward. After coming into contact with the substantially left side portions of the third tape guide post 70, capstan 80, and fourth tape guide post 71, the tape is introduced into the cassette case 111 from the tape outlet 113' on the right side of the cassette case 111. .

Therefore, in the stopped state, both the tension pin 74 and the pinch roller 85 are held close to the magnetic tape 115 or at a position where they are in slight contact with the magnetic tape 115. When this stop state is reached, the brake shoe 99.99' of the brake arm 97.98
is separated from the brake drum portion 11.11' of the reel stand 8.9, so that no braking force is applied to the reel stand 8.9 to restrict its rotation.

Note that the magnetic tape 115 is transferred from the cassette case 111 to the third
While the reel stand 8.9 is being pulled out until it reaches the state shown in the figure, the reel stand 8.9 is rotated by the magnetic tape 115 being pulled out.
Since the brake arm 97.98 applies a suitable brake to the reel stand 8.9, the magnetic tape 11
5 will not rotate so as to unwind excessively, that is, backlash will not occur.

In this stopped state, the tape is fast-forwarded or rewound as required.

Then, when a command to perform recording or playback from the stop state is given, the loading motor 46 is rotated in the normal direction again, stopped after being rotated by a predetermined amount, and is stopped at the second position.
The state shown in the figure, that is, the play mode state is reached.

As the loading motor 46 is further rotated in the normal direction, the slider 54 is moved from the position shown in FIG. 3 to the position shown in FIG.
Then, the pinch roller arm 81 is moved to the position shown in FIG. That is, the balance gear arm 72 has its balance gear pin 74 connected to the first position of the magnetic tape 115. The part between the second tape guide posts 68 and 69 is moved to a position where it is pressed slightly to the left.

Further, as the pressed portion 92 of the limiter arm 88 is further pressed to the left by the suppression pin 57 of the slider 54, the limiter arm 88 is further rotated clockwise from the position shown in FIG. Even after the pinch roller 85 of the roller arm 81 comes into contact with the capstan 80, it is rotated clockwise to some extent. This causes the pinch roller 85 to attach the magnetic tape 115 to the capstan 80 by the tensile force of the tension spring 93.
It will be crimped by sandwiching it.

Then, the capstan 80 starts rotating, the magnetic tape 115 is caused to run at a constant speed by the capstan 80 and the pinch roller 85, and the head drum 6
The rotating drum is rotated, thereby recording or reproducing. When the tension of the running magnetic tape 115 changes, the tension pin 74 is swung substantially in the left-right direction in accordance with the change in tension, so the ten-leg arm 72 is swung. Since the winding force on the S-side reel stand 8 is adjusted, the degree of rotation suppression of the supply-side tape reel (not shown) that engages with the S-side reel stand 8 is increased or decreased. The tension of the magnetic tape 115 being unwound is adjusted.

(o-2, Tape unloading operation) Next, the tape unloading operation and the accompanying movements of each moving member will be described.

When a command is issued to unload the tape, the loading motor 46 is reversed.

Thereby, as described above, the pivot arms 29 and 30
is rotated in the tape unloading direction, the moving blocks 23 and 24 are moved forward along the guide elongated holes 16, 17, and the slider 54 is moved to the right.

Therefore, the tensile gear arm 72 is pressed toward the right side by the pressing pin 56 on the left side of the slider 54, so that it is rotated clockwise. Further, the limiter arm 88 is rotated counterclockwise by the tensile force of the tension spring 96 as the pressing pin 57, which had been pushing it towards the left, is moved towards the right. Therefore, the pinch roller arm 81 is rotated counterclockwise. When the slider 54 reaches the position shown in FIG. 81, the balance gear arm 72 and the pinch roller arm 81 are returned to the position shown in FIG. 1
Since it is moved to a position where it does not come into contact with 01.101',
Brake arms 97 and 98 are tension springs 107
．． 109 causes the brake shoes 99, . 9
9' will be returned to a position in which it is in contact with the reel stand 8.9.

Incidentally, when a command to unload the tape is given, either one of the reel stands 8 and 9 is rotated in the tape winding direction, and the tape force is increased.
The tape 115 being pulled out from the tape 110 is wound into the tape force set 110 at approximately the same time as the moving blocks 23, 24, the tension gear arm 72, and the pinch roller arm 81 are moved as described above.

When tape unloading is completed, the tape recorder 1 is returned to the non-loading state.

(G. Effects of the Invention) As is clear from the above description, the tape recorder of the present invention pulls out a magnetic tape stored in a tape cassette from a cassette case and winds it in a predetermined manner around a head drum provided with a magnetic head. Recording or reproduction is performed with the magnetic tape wound around the head drum, and the winding of the magnetic tape around the head drum is performed by moving two tape loading members located inside the magnetic tape located at the front of the tape cassette to a predetermined position relative to the head drum. A tape recorder that operates by moving the tape loading member to a position, comprising two tape loading member moving means that move the tape loading member and are located apart from each other, and a motor that drives one of the tape loading member moving means. The present invention is characterized in that a moving member is provided that is moved by the one tape loading member moving means and operates the other tape loading member moving means by being moved.

Therefore, according to the present invention, the two tape loading member moving means for moving the two tape loading members separately can be connected to each other by one moving member so that the tape loading can be carried out. The mechanism can be constructed with a minimum number of parts.

Furthermore, since the two tape loading member moving means are connected to each other by one moving member, the positions where they are installed are less likely to be restricted by the connecting means. Therefore, the tape loading member moving means can be provided at the most appropriate position, and the number of members disposed between the part where the tape cassette is mounted and the head drum is significantly reduced. The distance between the tape recorder and the head drum can be reduced as much as possible, and the tape recorder can be made smaller accordingly.

In the above-mentioned embodiment, a control unit is provided on the moving member for connecting the two tape loading member moving means, and this control unit controls the magnetic tape, such as the ten leg arm, the pinch roller arm, and the brake arm for the reel stand. The members involved in loading and running are moved to a predetermined position in a predetermined mode, but by doing this, one moving member can control the movement of multiple members, so the tape recorder It is possible to further simplify the structure and further reduce the size of the structure.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the tape recorder of the present invention, in which Fig. 1 is a plan view in a state before a magnetic tape is loaded, Fig. 2 is a plan view in a play mode, and Fig. 3 is a plan view of a magnetic tape in a state before it is loaded. FIG. 4 is a plan view showing the lower part of the mechanical chassis, FIG. 5 is a bottom view of the main parts, and FIG.
Figure 7 and Figure 7 are exploded perspective views of the main parts, Figure 8 is the same as Figure 1.
FIG. 9 is a cross-sectional view taken along the line -■ in FIG. 1. Explanation of code: Tape recorder number 1. 6...Head drum, 25.25'...Tape loading member, 29.3
0...φ tape loading member moving means, 46・φ・motor. 54... Moving member. 110 Fist/Fist tape cassette, itt...Cassette case, 115...Magnetic tape procedure amendment (voluntary) June 24, 1985

Claims (1)

[Claims] A magnetic tape stored in a tape cassette is pulled out from a cassette case and is wound around a head drum provided with a magnetic head at a predetermined winding angle for recording or reproduction, and the head of the magnetic tape is A tape recorder in which winding around the drum is performed by moving two tape loading members located inside the magnetic tape located at the front part of the tape cassette to a predetermined position with respect to the head drum, the tape loading member described above. two tape loading member moving means that move the tape loading member moving means and are located apart from each other; a motor that drives one of the tape loading member moving means; A tape recorder comprising a moving member for operating the tape loading member moving means.