KR950000392B1 - Deck mechanism for magnetic recording/reproducing apparatus - Google Patents

Abstract

The mechanism is for a light, portable, and cheaper deck in a magnet record player. This mechanism comprises a light emitting sensor (73), light receiving sensors (74),(75) on both sides, reel detect sensors (38),(39) which detect the rotation of supply and winding reel tables (46),(47), a cassette switch (79) which determines the existence of a cassette, a printing circuit board (77) which is fixed on the slide base (40).

Description

Deck Mechanism of Magnetic Recording Player

1 to 4 show the configuration of the deck mechanism of the magnetic recorder according to the present invention with the rotary cassette housing removed.

1 is a plan view showing a state before a loading operation.

2 is a bottom view showing a state before a loading operation.

3 is a plan view showing a state after the loading operation.

4 is a bottom view showing a state after a loading operation.

5 is a plan view schematically showing the structure of the deck mechanism of the magnetic recorder according to the present invention in a state where the rotary cassette housing is combined;

6 to 10 show a deck mechanism of the magnetic recording and reproducing apparatus according to the present invention,

6 is a left side view showing a state before a loading operation.

7 is a left side view showing a state after a loading operation.

8 is a right side view showing a state before a loading operation.

9 is a right side view showing a state after a loading operation.

10 is a perspective view showing the configuration of the pinch roller arm driving and pressing means of the deck mechanism of the magnetic recording / playback apparatus according to the present invention.

11 is a partially enlarged plan view showing another embodiment of the deck mechanism of the magnetic recording / playback device according to the present invention.

12 is a plan view showing a slide base constituting the deck mechanism of the magnetic recorder according to the present invention.

13 is an enlarged cross-sectional view showing another embodiment of the deck mechanism of the magnetic recording / playback apparatus according to the present invention.

Fig. 14 is an exploded cross-sectional view showing a power transmission system of a deck mechanism of a magnetic recording / playback device according to the present invention.

Fig. 15 is a perspective view of a gear housing that is a main configuration of a deck mechanism of a magnetic recording / playback apparatus according to the present invention.

16 is a sectional view showing an idler mechanism of the deck mechanism of the magnetic recording / playback device according to the present invention.

17 is a plan view showing a detecting means of a deck mechanism of a magnetic recording / playback device according to the present invention.

18 is an operation diagram for explaining the operation of the deck mechanism of the magnetic recording and reproducing apparatus according to the present invention.

* Explanation of symbols for main parts of the drawings

1: Fixed base plate 2: Rotating head drum

3 Loading Motors 4,5: Supply and Winding Slantpost Assembly

6: stabilizer 7: capstan motor

8: shaft 9: rotor magnet

10,11: loading guide 12,13: base

14,15: guide roller 16,17: slant post

18,29,30,31,32,34,54,62,64,97,106,107,118,120,148

19 capstan housing 20 pinch roller

21: Take / Up Post 22: Pinch Arm

23: interlocking arm 23a: locking pin

24,26,36,57: Tension spring 25: Take / up arm

27,66,122: torsion spring 28: cam lever

28a: locking groove 28b: cam pin

33: swivel rock 35: cleaning lever

37: cleaning roller 38: supply reel table detection sensor

39: winding reel table detection sensor 40: slide base

41,45: guide slot 42: guide pin

43,44: sidewalls 46,47: feeding and winding reel tables

48,49: Reel Gear 50,51: Reel Body

52: tension post 55: tension arm

56: contact protrusion 58: section band

59: connecting operation pin 60: connecting piece

61: fixed position variable connecting piece 61a: locking jaw

63: supply brake 65: winding brake

67: brake gear 68: brake lever

68a: hook 68b: extension

69: compression spring 70: cap

71: support piece 72: reel brake release port

73: light emitting sensor 74,75: light receiving sensor

76: condensation sensor 77,117: printed circuit board

78: flexible printed circuit board 78a: extension

79: switch 80: slider cam

80a: cam ball 81,82: support pin

83,84: support 85: protective equipment

86: extension 87: reinforcement

88: rotation axis 89: worm

90: opponent gear 91: worm

92 gear shaft 93 double gear

93a: Waiting gear 93b: Small gear

94: middle gear 94a: working cam

94b: Large neck 94c: Small neck

95,96: Loading gear 95a, 96a: Cam groove

97: cam lever 98: gear housing

98a: recessed part 98b: insertion hole

98c: opening 99,100: loading arm

101,102 connection piece 103: cam cover plate

104,105 support angle 108,109

110: electric gear 111: fixed part

112: center gear 113: timing belt

114: idler gear 115,116: connecting gear

119: switch gear 119a: cylindrical body

119b: cam projection 119c: recessed part

121: switch lever 121a: guide

121b: release operation protrusion 130: rotating cassette housing

131: rotating bracket 132: cassette holder

133,134: fixing piece 135: hinge pin

136: tension spring 137: torsion spring

138: side walls 139,142: guide worker

140,143: guide pin 144: side wall

144,145,146: leaf spring 147: lock lever

147a: latching portion 147b: release portion

149: torsion spring 150: locking hook

151: damper gear 152: damper

153: Sector Gear

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a deck mechanism, which constitutes a traveling system of a tape in a magnetic recording player such as a slide loading type camcorder. A deck mechanism of a record player.

Background Art [0002] Various slide loading deck mechanisms have been known in which a cassette tape is loaded by sliding a slide base on which a reel table is installed with respect to a fixed base plate on which a rotating head drum is installed.

As is well known, the camcorder has a deck chassis, i.e. a base plate, a rotating head drum for recording and reproducing video and audio signals on a tape, an audio head for recording and reproducing audio signals, and a tape cassette. A reel table for supporting the cassette, a cassette housing for mounting the take cassette on the reel table of the deck body, an inclined post assembly, a loading gear, and a loading motor, which pulls the tape from the tape cassette seated on the reel table and contacts the rotating head drum. Tape loading means, such as a plurality of guide rollers for guiding the tape to travel along a predetermined path, guide posts such as guide posts, tape driving means such as a capstan and pinch roller for conveying the tape, and a tape for traveling Tension holding means to control to maintain a constant tension at all times, and do not drive Hundreds of running stabilization means for keeping the reed, the idler mechanism for rotating the reel table so that the reel table can be wound around the tape conveyed by the capstan and pinch rollers, various brake means, sensing means for detecting the mode change, etc. It consists of four parts.

In the camcorder of such a complicated structure composed of a large number of parts, the volume and weight of the product are determined and the performance is determined according to the structure in which the various parts are arranged on the base plate.

Therefore, the function of each partial device is also important for the performance of the product, but the overall layout structure is a factor that determines the size, thickness, and weight of the product, and also has a great influence on the cost of the product.

However, in the conventional slide-loading deck mechanism as known, many parts for running the tape are disposed only on the upper side of the fixed base plate, and in particular, the fixed base plate and the slide base are provided at a predetermined distance. Since many parts are placed in the space between the fixed base plate and the slide base after being combined, the height of the product becomes high and the volume becomes large, which is disadvantageous for the thin, thin, thin, and small size of the product, and the overall cost of production increases. There was a problem such as being.

An object of the present invention is to provide a deck mechanism of a magnetic recording and reproducing apparatus, which has been devised to solve the above-mentioned problems.

The present invention, in order to achieve the object as described above, the fixed base plate and the slide base to be in close contact with each other without a space therebetween, and to install most of the various parts on the upper surface of the fixed base plate and the upper surface of the slide base The lower part of the fixed base plate provides a deck mechanism of the magnetic recording and reproducing apparatus, characterized in that various tape traveling system components are arranged separately on and under the fixed base plate and the slide base.

More specifically, the upper surface of the fixed base plate, the rotating head drum, the loading motor, the supply and take-up slant post assembly, the stabilizer, the pinch roller arm drive and crimping means, the head cleaning means, The upper surface of the slide base is provided with a stern shaft, a power transmission system of a loading motor, a rotor magnet of a stanston motor, an idler mechanism, and a sensing means are mounted on the lower surface of the fixed base plate, so as to slide in close contact with the fixed base plate. Provided is a deck mechanism of a magnetic recording and reproducing apparatus that can be miniaturized and inexpensive by providing a feeding and winding reel table, a tension adjusting means, and a brake means.

Hereinafter, the deck mechanism of the slide loading magnetic recording player according to the present invention will be described in more detail according to the embodiment shown in the accompanying drawings.

As shown in FIGS. 1 to 18, the deck mechanism of the slide-loading magnetic recording player according to the present invention includes a fixed base plate 1 fixed to a predetermined portion of the main body of the magnetic recording player, and the fixed base plate ( 1) is composed of a slide base (40) coupled to the reciprocating movement in the front and rear directions at the upper portion, and a rotating cassette housing (130) coupled to the rear opening of the fixed base plate (1). have.

The deck mechanism of the slide-loading magnetic recording player according to the present invention is coupled to the fixed base plate 1 and the slide base 40 so as to slide in close contact with each other. It is characterized by arrange | positioning parts and a traveling system.

That is, the rotating head drum (2), the loading motor (3), the supply and winding slantpost assembly (4) (5), the stabilizer (6) on the upper surface of the fixed base plate (1), The pinch roller arm drive and crimping means, the head cleaning means, the shaft 8 of the capstan motor 7 are provided, the power transmission system of the loading motor 3 and the rotor magnet 9 of the capstan motor 7 on the lower surface thereof. ), An idler mechanism, a sensing means, and a supply and winding reel table, a tension adjusting means, and a brake means are installed on an upper surface of the slide base 40.

The fixed base plate 1 has a rotating head drum 2 disposed at a predetermined direction and an inclined angle at a rear middle portion thereof, and loading guide holes 10 and 11 are formed at both sides of the rotating head drum 2, respectively. The feed and take-up slantpost assemblies 4 and 5 are installed to be movable.

The feeding and winding slant post assemblies 4 and 5 are fixed with guide rollers 14 and 15 and slant posts 16 and 17 to the slant post bases 12 and 13, respectively.

The loading motor 3 is fixed at one corner of the upper surface of the fixed base plate 1, and a stabilizer 6 for improving the running stability of the tape is rotated about the shaft 18 in front of the fixed base plate 1. It is possibly installed.

On the other side of the upper surface of the fixed base plate 1, the capstan housing 19 is fixed with several fixing screws, and the shaft 8 of the capstan motor 7 protrudes upward and is supported by the capstan housing 19.

In front of the capstan housing 19, the pinch roller 20 and the take-up post 21 are moved in the loading direction, and the pinch roller 20 is brought into contact with the shaft 8 and then pressed at a predetermined pressure. A pinch roller arm driving and crimping means is provided, and behind it, a head cleaning means for automatically cleaning the head of the rotating head drum 2 in association with the slide base 40 is provided.

The pinch roller arm driving and crimping means includes a pinch arm 22 to which the pinch roller 20 is rotatably coupled, an interlocking arm 23 to which the locking pin 23a is fixed downward, and the pinch arm 22. And a tension spring 24 for connecting the linkage arm 23 and a take / up arm 25 to which the take / up post 21 for guiding the running of the tape is fixed, and the pinch arm 22 and the take / up. A tension spring 26 connecting the up arm 25, a torsion spring 27 for supporting the pinch arm assembly to have a clockwise rotational force at all times, and an engaging pin 23a of the linkage arm 23 at the end thereof. This engaging groove 28a is formed and consists of a pinch roller drive cam lever 28 for rotating the linkage arm 23 by the rotation of the loading gear 96.

The pinch arm 22 and the linkage arm 23 are rotatably coupled to the same axis 29 at a predetermined portion of the fixed base plate 1, and the take / up arm 25 is rearward of the shaft 29. It is rotatably coupled to a separate shaft 30 fixed to the side, the pinch roller driving cam lever 28 has a cam pin 28b inserted into the cam groove 96a of the loading gear 96 at one end thereof. And rotatably coupled to the shaft 31 fixed to the lower surface of the fixed base plate 1.

The head cleaning means is rotatably coupled around a shaft 32 fixed to a rear one corner portion of the fixed base plate 1, and a pivot arm 33 interlocked with the movement of the slide base 40, and the rotation A cleaning lever 35 that is rotatably coupled around the shaft 34 on one side of the copper arm 33 and interlocked with the pivot arm 33, and a tension connecting the pivot arm 33 and the cleaning lever 35. Spring 36 and a cleaning roller 37 rotatably coupled to the end of the cleaning lever 35 to clean the rotating head drum (2), the rotating head drum during the slide operation of the slide base (40) Perform the action of cleaning (2).

On the other hand, the slide base 40 has a plurality of guides 41 are formed in both sides of the front and rear, respectively, the guide pins 42 fixed to the fixed base plate 1 is guided The structure that is stacked so as to be inserted into the django 41 allows linear movement before and after the fixed base plate 1.

The slide base 40 is configured to exclude the phenomenon that the height of the deck is increased by sliding in contact with the fixed base plate (1).

Both side walls 43 and 44 of the slide base 40 have circular guide holes 45 formed therein, and a cassette holder 132 constituting the pivotable cassette housing 130 is provided with the slide base 40. The distance is to be moved.

Supply and take-up reel tables 46 and 47 are respectively provided on both sides of the upper surface of the slide base 40, and the supply reel table 46 is controlled by tension adjusting means, and the supply and take-up reel table 46 is provided. (46) is to control the rotation operation by the brate means.

The reel table 46, 47 is composed of a lower reel gear 48, 49 and the upper reel body 50, 51, respectively, the reel gear 48, 49 and the reel body 50 ( A predetermined contact friction force acts between 51).

The tension adjusting means has a tension post 52 is fixed to the tension arm 55 is rotatably coupled around the shaft 53 on one side of the slide base 40 and the contact protrusion 55a is formed on the inside, and A tension spring 57 fixed to one side of the tension arm 55 and elastically supporting the tension arm 55 so as to have a rotational force in a counterclockwise direction at all times, and wound on the reel body 50 of the supply reel table 46. And a tension band 58 fixed at one end of the tension arm 55 and the other end fixed at the slide base 40 side, and a connection operation pin 59 fixed to a predetermined portion of the tension arm 55. And, the connecting piece 60 for connecting the tension band 58 and the connecting operation pin 59, and the other end of the tension band 58 is fixed and of the reel gear 48 of the supply reel table 46 Locking jaw (61a) is formed to prevent the separation to the fixed position variable connection piece 61 is fixed to a certain portion of the slide base (40) It provides a proper tension to the tape to perform a more stable running.

The brake means is rotatably coupled to a shaft 62 fixed to one side of the slide base 40 to supply a brake 63 to control the rotation of the feed reel table 46, and the shaft 64 fixed to the other side. It is configured to be rotatably coupled to the winding brake 65 for controlling the rotation operation of the winding reel table 47, and performs the function of controlling the supply and take-up reel table 46, 47 for each mode.

The feed brake 63 has a gear portion 63a engaged with the reel gear 48 of the feed reel table 46 at the front end thereof, and an interlocking pin 63b interlocked with the mode sensing means is formed at one side thereof. The torsion spring 66, which is coaxially coupled to the shaft 62, is always elastically supported to have a rotational force counterclockwise.

The winding brake 65 is fixedly coupled to the cap 70 rotatably coupled to the shaft 64 and the lower portion of the cap 70 to always engage the reel gear 49 of the winding reel table 47. A brake lever 67 and a brake lever 68a at one end thereof are formed to engage the reel gear 49 and a straight extension 68b is formed at the other end thereof to be rotatably coupled to the cap 70. And a compression spring 69 coupled between the cap 70 and the brake lever 68 to elastically support the brake lever 68 downwardly.

On one side of the take-up brake 65, a support piece 71 for holding the reel gear 49 of the take-up reel table 47 is fixed.

A reel brake release port 72 for releasing the reel brake of the cassette is fixed to the inlet side intermediate portion of the slide base 40.

As shown in FIG. 11, the reel brake release port 72 and the support piece 50 for supporting the reel gear 49 of the reel table 47 may be integrally formed to improve assemblability. have.

The slide base 40 has an end sensor consisting of a light emitting sensor 73 and light receiving sensors 74 and 75 on both sides, and a reel detecting sensor 38 for detecting rotation of a supply and winding reel table 46 and 47. 39, and a printed circuit board 77 having a circuit constitution such as a condensation sensor 76 is fixedly attached and pulled out by one flexible printed circuit board 78. An extension 78a extending from the substrate 78 is fixed to one corner portion of the slide base 70 and electrically connected to a switch 79 that distinguishes the shape of the cassette.

In the middle of the slide base 40, the slider cam 80 having the cam hole 80a is fixed with several fixing screws to move in the front and rear directions so that the movement stroke of the slide base 40 can be adjusted.

Support pins 81 and 82 for supporting a cassette are formed on both front sides of the upper surface of the slide base 40, respectively, and support portions 83 and 84 are bent on both sides of the slide base 40 by bending.

The support pins 81 and 82 of the front side may be bent to form both front edges of the front side of the slide base 40, so that the support pins 81 and 82 may be integrally formed to improve production and assembly efficiency.

A protective device 85 having a predetermined height is fixed to the front middle portion of the slide base 40 to support the open lid of the cassette and to prevent the wrong insertion of the cassette and the insertion of foreign matter.

One side edge of the slide base 40 extends an extension portion 86 for interlocking the pivot arm 33 of the head cleaning means to the rear side, and an extension portion 86 and the slide base 40 on the reinforcement portion ( 87 is formed to be stepped to a predetermined height so as to reinforce the strength of the slide base 40 while avoiding interference with components constituting the pinch roller arm driving and crimping means.

On the other hand, the power transmission system is formed with a worm (89) coupled to the rotation shaft 88 of the loading motor 3 and the mating gear 90 is engaged with the worm (89) of the loading motor (3) at one end. A gear shaft 92 having a worm 91 formed at the other end thereof, a double gear 93 in which a standby gear 93a meshes with the worm 91 of the gear shaft 92, and an operation cam 94a disposed on an upper surface thereof. And a pair of intermediate gears 94 formed to engage the small gear 93b of the double gear 93 and cam grooves 95a and 96a having a predetermined shape to sequentially engage the intermediate gears 94. It consists of a loading gear (95), 96, and a cam lever (97) for moving the slide base (40) while being rotated by the rotation of the one-side loading gear (95), loading the power of the loading motor (3) It delivers to the feed and wound slantpost assembly 4, 5 via gears 95, 96 and simultaneously to the slide base 40.

The gear shaft 92 and the double gear 93 are supported by a gear housing 9 fixed to the lower surface of the fixed base plate 1.

The gear housing 98 has a recess 98a for accommodating the gear shaft 92 and the double gear 93 and an insertion hole 98b into which the worm 89 of the loading motor 3 is inserted at one side thereof. Is formed, and the opening 98c is formed on the other side so that the double gear 93 and the intermediate gear 94 can be engaged.

The operation cam 94a of the intermediate gear 94 has a small diameter portion 94c formed at one side of the large diameter portion 94b.

The cam lever 97 is a cam hole formed in the slider cam 80 of the slide base 40 is fixed to the cam pin (97a) is guided to be inserted along the cam groove (95a) of one side loading gear 95 on one side The locking pin 97b inserted into the 80a is fixed and rotatably coupled around the shaft 97 'fixed to one side of the bottom surface of the fixed base plate 1.

Several loading arms 99 and 100 are foldably connected to the loading gears 95 and 96, and feeding and winding slantpost assemblies 4 are provided at the ends of the loading arms 99 and 100. Connection is fixed by the base 12 (13) and the connection piece 101 (102) which comprise (5), respectively.

In the middle of the lower surface of the fixed base plate 1 is supported on the shaft 31 which is the rotation center of the pinch roller driving cam lever 28, and also supports the loading gears 95 and 96, and the capstan motor 7 The cam cover plate 103 which supports the rotor magnet 9 is being fixed.

The cam cover plate 103 is formed with both support angles 104 and 105 bent downward so that the support angles 104 and 105 are fixed to the lower surface of the fixed base plate 1 and are loaded on both sides of the upper surface. Long holes 108 and 109 are respectively formed which are coupled to the axes 106 and 107 of the gears 95 and 96.

The cam cover plate 103 has both support angles 104 and 105 fixed to both sides of one side loading guide hole 11 so as to reinforce the decrease in strength by the loading guide hole 11.

In addition, the idler mechanism is formed by bending the electric gear 110 engaged with the gear portion 9a formed on the rotor magette 9 of the capstan motor 7 and the bottom surface of the fixed base plate 1 by bending. The center gear 112 installed in the fixing portion 111, the timing belt 113 connecting the electric gear 110 and the center gear 112, and the center gear 112 is always engaged with the center gear 112. Idler gear 114 rotated clockwise and counterclockwise according to the rotational direction of the < RTI ID = 0.0 >), < / RTI > first and second coupling gears 115 and 116 for transmitting power of the idler gear 114 to the supply reel table 46 It is configured to, and receives the power of the capstan motor 7 serves to selectively drive the supply and take-up reel table 46, 47.

The sensing means may include a printed circuit board 117 fixed to one side of a bottom surface of the fixed base plate 1, and a switch gear 119 rotatably coupled about an axis 118 to one side of the printed circuit board 117. ), A switch lever 121 rotatably coupled to the other side about the shaft 120 and interlocked with the switch gear 119, and coupled to the switch lever 121 to burn the switch lever 121. It consists of a torsion spring 122 which is sexually supported to perform the mounting and ejecting operations of the cassette and the sensing of each mode.

The switch gear 119 is formed on the outer circumferential surface of the cylindrical body (119a) is a cap projection (119b) in contact with the interlocking pin (63b) of the supply brake 63, the switch lever 121 on the inner circumferential surface of the cylindrical body (119a) ) Is provided with a concave inlet portion 119c for guiding rotation.

The switch lever 121 has a guide pin 121a for guiding the switch gear 119 along the cylindrical body 119a at a lower surface thereof, and at one side thereof, a release operation protrusion linked to the pivotable cassette housing 130. 12b) is formed.

On the other hand, the rotatable cassette housing 130 is coupled to the rotating bracket 131 rotatably coupled to the rear both sides of the fixed base plate 1, and the rotating bracket 131 to guide the entry of the cassette And a cassette holder 132.

The rotation bracket 131 is rotatably coupled to the fixing pieces 133 and 134 fixed to both rear sides of the fixed base plate 1 by the hinge pins 135, and the fixing pieces 133 and 134. The rotation bracket 131 is connected by the tension spring 136 and the torsion spring 137 to elastically support the rotation bracket 131 in a direction to open and rotate at all times.

The pivot bracket 131 is formed with a guide hole 139 in the longitudinal direction at the rear of both side walls 138, and the guide pin 140 is fixed inward in the front, respectively, the cassette holder 132 is Guide pins 142 inserted into the guide slot 139 of the rotation bracket 131 and inserted into the guide slot 45 of the slide base 40 are fixed to the rear of both side walls 141, respectively, Guide slots 143 into which the guide pins 140 of the pivoting bracket 131 are inserted are respectively formed, such that the cassette holder 132 is movable forward and backward along the pivoting bracket 131. have.

The guide hole 143 formed in the cassette holder 132 has a height greater than the diameter of the guide pin 143 of the pivoting bracket 131, so that the cassette holder 132 may move the rear guide pin 142. The pivot spring is rotated by a predetermined angle, and a plate spring 144 for elastically supporting the cassette holder 132 downward is interposed between the pivoting bracket 131 and the cassette holder 132. On both sides of 132, leaf springs 145 and 146 are respectively fixed to support the cassette in an elastic downward direction.

The lock lever 147 is rotatably coupled around the shaft 148 at the tip of one side wall 138 of the pivoting bracket 131, and is burnt by a torsion spring 149 coupled to the shaft 148. Sexually Supported

The lock lever 147 has a locking portion 147a that is caught by the locking locking pin 150 of the fixed base plate 1 and a release operation protrusion 121b of the switch lever 121 constituting the sensing means. A release portion 147b for interlocking is formed.

A damper 152 having a damper gear 151 is fixed to an inner surface of one side wall 141 of the cassette holder 132, and a damper gear 151 of a damper 152 is fixed to one side wall of the slide base 40. An interlocking sector gear 153 is formed to smoothly rotate the cassette cassette housing 130.

Referring to the operation diagram shown in Figure 18 the effect of the deck mechanism according to the present invention configured as described above is as follows.

When the eject button installed on the main body is pressed for the use of the magnetic recording and reproducing device equipped with the deck mechanism according to the present invention, the loading motor 3 is driven in the forward direction, the power of which is transmitted through the power transmission system, and the switch lever of the sensing means. The lock lever 147 rotates in the counterclockwise direction to overcome the elasticity of the torsion spring 149 because it rotates the 121, so that the lock lever 147 from the lock latch piece 150 of the fixed base plate 1 Since the engaging portion 147a of the rotational cassette housing 130 is rotated counterclockwise around the hinge pin 135 by the elastic restoring force of the tension spring 136 and the torsion spring 137.

Thereafter, the loading motor 3 is driven in the reverse direction, thereby releasing the restrained state of the switch lever 121 to enable the lock operation of the pivotable cassette housing 13.

Thus, when the cassette is pushed into the cassette holder 132 in a state where the pivoting cassette housing 130 is rotated and opened, and then gently presses the pivoting cassette housing 130, the lock lever of the pivoting cassette housing 130 147 is caught by the locking piece 150 of the fixed base plate 1 so that the rotatable cassette housing 130 is closed to the magnetic recording player main body.

The cassette is stably supported by leaf springs 145 and 146 fixed to both sides of the cassette holder 132.

At this time, since the release part 147b of the lock lever 147 interlocks the release operation protrusion 121b of the switch lever 121 by the rotation operation of the pivotable cassette housing 130, the loading motor 3 is driven. Thus, the movement of the slide base 40 and the loading operation of the tape are made.

That is, since the driving force of the loading motor 3 is transmitted to the power transmission system to rotate the loading gears 95 and 96, the cam lever 97a is inserted into the cam groove 95a of the one side loading gear 95. When the 97 is rotated about the shaft 98, the slide base 40 in which the engaging pin 97b of the cam lever 97 is connected to the cam hole 80a of the slider cam 80 is fixed base plate 1. It is linearly moved to the rear side along the several guide pins 42 fixed to).

In this case, since the guide pins 142 of the cassette holder 132 are inserted into the guide holes 45 formed on both side walls of the slide base 40, the cassette holder 132 is moved by the movement of the slide base 40. It is elastically supported by the leaf spring 144 interposed between the rotation bracket 131 and moves to the rear side by the length of the guide hole 139 of the rotation bracket 131.

Simultaneously with the movement of the slide base 40 as described above, the feed and take-up slantpost assemblies 4 and 5 guide the tape of the cassette and follow the loading guides 10 and 11 of the fixed baseplate 1. Will move backwards.

At this time, the pinch roller arm driving and the pressing means, the operation of the tension adjusting means, the brake means, the head cleaning means is made at the same time, the operation of the pinch roller arm driving and pressing means will be described as follows.

That is, in the state where the loading operation of the cassette is not started, the pinch arm 22 constituting the pinch roller arm driving and pressing means receives the rotational force in the clockwise direction by the torsion spring 27, but the winding slantpost assembly 5 By the base 13, the rotational motion is maintained in a restricted state.

In this state, the pinch arm 22 is rotated in the clockwise direction by the elastic restoring force of the torsion spring 27 by the movement of the slant post assembly 5, and the slitting post assembly 5 is moved by the continuous movement of the slant post assembly 5. When the pinch arm 22 is released from the land post assembly 5, the locking pin 23a of the linkage arm 23 comes into contact with the locking groove 28a of the cam lever 28, and then the loading gear 96 By the continuous rotation of the cam lever 28 in which the cam pin 28b is inserted into the cam groove 96a of the loading gear 96 is rotated at a predetermined angle so that the pinch roller 20 of the pinch arm 22 is turned into a capstan motor ( When it comes in contact with the shaft 8 of 7), the pinch arm 22 is restrained by the rotation of the pinch arm 22, the tension force is generated in the tension spring (24) connected to the pinch roller (20) The pinch roller 20 is pressed to the shaft 8 with a predetermined pressing force.

At this time, the take / up arm 25 elastically supported by the pinch arm 22 is rotated by the movement of the pinch arm 22, and stops at the time when the movement of the pinch roller 20 is completed. You will be guided.

On the other hand, in the tension adjusting means, the feed slot post assembly 4 is supported by the contact protrusion 55a of the tension arm 55 in a state in which the loading operation of the cassette is not started, and in this state the loading motor 3 is supported. When the load gears 95 and 96 are rotated by the power of), the slant post assembly 4 and 5 are transported along the loading guide holes 10 and 11, and thus the slant post assembly ( 4) As the 5 moves, the tension arm 55 is elastically in contact with the contact protrusion 55a of the tension arm 55 to the base 12 of the supply slant post assembly 4. It rotates counterclockwise by the movement of 4).

Subsequently, when the tape travels in the play mode such as the play mode while the loading operation of the slant post assembly 4 (5) and the tension arm 55 is completed, the tape becomes a tension post. As the force applied to the 52 increases, the tension arm 55 rotates clockwise to relax the tension band 58 wound on the supply reel table 46, thus the tape unwinding speed of the supply reel table 46. Is reduced, thereby reducing the tension of the tape.

In addition, when the tape is weakly tensioned, the force applied to the tension post 52 is reduced, so that the tension arm 55 is rotated counterclockwise so that the tension band 58 wound around the supply reel table 46 is provided. ), The tape unwinding force of the supply reel table 46 is increased, thereby increasing the tension of the tape.

In this way, the tension adjusting means changes the position of the tension post 52 according to the amount of tension applied to the tape, thereby adjusting the rotational force of the supply reel table 46 to maintain the tension of the tape at all times.

On the other hand, in the brake means, since the feed brake 63 is subjected to the elastic force of the torsion spring 66 until the tape loading operation is completed, the gear of the feed brake 63 is supplied to the reel gear 48 of the feed reel table 46. The portion 63a is engaged so that the reel gear 48 of the supply reel table 46 cannot be arbitrarily rotated.

At the same time, since the winding reel table 49 is not restrained by the brake lever 68 until just before the loading operation of the slide base 40 is completed, the winding and reeling table assembly 4 can be supplied. It is possible to take out the cassette by the movement of (5).

Thereafter, immediately after the loading operation of the slide base 40 is completed, the brake lever 68 is rotated clockwise about the shaft 70, so that the brake lever 68 is connected to the reel gear 49 of the winding reel table 47. ), The reeling table 68 is operated while being subjected to a predetermined back tension by being engaged by the engaging teeth 68a.

After the tape loading operation is completed, the supply brake 63 is rotated clockwise about the axis 62 by the cam projection 119b of the switch gear 119 to reel the gear 48 of the supply reel table 46. ) Is released.

The brake means controls the supply and take-up reel tables 46 and 47 for each mode to guide the tape smoothly.

On the other hand, in the head cleaning means, since the cleaning lever 35 receives the rotational force in the clockwise direction about the shaft 34 by the tension force of the tension spring 36 in the state where the cassette loading operation is not started, the rotating head The cleaning roller 37 is separated from the drum 2.

In this state, the extension arm 86 of the slide base 40 pushes the pivot arm 33 to rotate counterclockwise about the axis 32 by the movement of the slide base 40. The cleaning lever 35 connected by the 33 and the tension spring 36 is rotated counterclockwise about the shaft 34 to contact the head of the rotating head drum 2, and the tape loading operation is almost At the time of completion, the rotating arm 33 further rotates the cleaning lever 35 at a predetermined angle to separate the cleaning roller 37 from the rotating head drum 2.

The deck mechanism of the magnetic recording player as described above is coupled to slide so that there is no space between the fixed base plate and the slide bases, and constitutes the traveling system of the tape on the upper and lower surfaces of the fixed base plate and the upper surface of the slide base. Since the parts are arranged separately, the conventional fixed base plate and the slide base are combined to form a space therebetween, and then the parts are disposed between the fixed base plate and the slide base, and the parts are placed on the lower part of the fixed base plate and the upper surface of the slide base. Compared with the deck mechanism, the overall height and volume of the product are reduced, and the number of parts used is also reduced, making the product lighter, thinner, smaller, and smaller, and reducing the cost of the product.

As described above, the present invention contributes to the miniaturization of the product and not only achieves a remarkable effect of reducing the production cost, but also secures the printed circuit board having integrated circuit configurations such as end sensors and condensation sensors to a fixed base plate. Draw out by a flexible printed circuit board, and the support part for supporting the cassette and the fixing part integrally formed by bending to support the center gear of the idler mechanism, thereby simplifying the configuration and improving the assemblability of the product Contributing to the improvement is effective.

Claims (2)

In the slide loading magnetic recording player having a fixed base plate (1) and a slide base (40) installed slidably therein and provided with supply and take-up reel tables (46, 47), a light emitting sensor (73), both sides A light receiving sensor (74) (75), a reel detecting sensor (38) (39) for detecting rotation of the supply and winding reel table (46), (47), a cassette switch (79) for determining the presence or absence of a cassette, a drum and A condensation sensor 76 located between the cassette insertion holes and detecting dew condensation is assembled to one printed circuit board 77 and fixed to the slide base 40 and drawn out by one flexible printed circuit board 78. Deck mechanism of a magnetic recording and reproducing apparatus, characterized in that it is connected to a control part of the main body side. The method of claim 1, wherein the extending portion (78a) extending from the flexible printed circuit board 78 is fixed to one corner portion of the slide base 40 is connected to the switch 79 for distinguishing the shape of the cassette Deck mechanism of magnetic recorder