JPH04146558A - Tape cassette loading device - Google Patents

Abstract

PURPOSE:To decrease the number of parts of a cassette loading device by connecting rotatably a cassette holder to an arm which turns round a 1st rotary shaft via a 2nd rotary shaft and at the same time securing the sliding touch between a pair of guide pins provided at both ends of the cassette holder and the guide grooves. CONSTITUTION:A cassette holder 5 is directly and rotatably connected to an arm 105 which turns with the motive power received from a motive power transmission mechanism. At the same time, a pair of guide pins 7 and 8 provided at both ends of the holder 5 have the sliding touch to the guide grooves 101 and 102. Thus the holder 5 moves based on the movement of the arm 105. As a result, the friction caused by the movement of the holder 5 is reduced and the transmission driving force is also reduced. Then the cassette loading time is shortened and the number of parts can be decreased for a cassette loading device.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tape cassette loading device for a magnetic recording/reproducing device.

[Conventional technology]

FIG. 8 is a conceptual perspective view showing a conventional tape cassette loading device disclosed in, for example, Japanese Utility Model Application Publication No. 63-74741, where l is the chassis of the magnetic recording/reproducing device, and 2 is a power transmission device provided in the chassis 1. 3 is a tape cassette, 3a is a grip groove formed in the tape cassette 3, 4 is a lid rotatably supported on the tape cassette 3, and 5 is a gear for holding the tape cassette 3. 6 is a presser spring attached to the cassette holder 5; 7.8 is a guide pin attached to the rear of both sides of the cassette holder 5; 9. IO are guide pins 11 attached to the front of both sides of the cassette holder 5, respectively;
．． 12 is a holder side plate attached to both sides of the chassis 1, 13.14 is a guide groove formed in each of the holder side plates 11.12, 15.16 is a guide groove formed in each of the holder side plates 11.12, 17 .18 is each holder side plate 1
A gear pivotally supported at 1° 12, 19 a guide groove formed in the holder side plate 12, 20 a guide groove formed in the cassette holder 5, 21 a lever engaged with the guide groove 19 and 20, and 22 a lever 21, and the guide grooves 19, 2
0, 23 is a pressing portion formed on the lever 21, 24 is a lid opening/closing piece formed on the lever 21, 2
5 is a cam formed on the holder side plate 12; 26 is a slide plate provided on the outside of the holder side plate 11°12; 27.2
8 are cam grooves formed on the side surfaces of the slide plate 26;
9.30 are cams and grooves formed on the slide plate 26, respectively;
31 and 32 are guide grooves formed on the side surfaces of the slide plate 26, 33 and 34 are guide grooves formed on the side surfaces of the slide plate 26, and 35° and 36 are racks attached to the side surfaces of the slide plate 26, respectively. 37.38 is the holder side plate 11
．． 12, guide pins inserted into the guide grooves 31 and 32, 39 a moving plate provided on the outside of the slide plate 26, 40 formed on the moving plate 39, and a gear 2 of the power transmission mechanism A. The rack 41 is engaged with the moving plate 39.
42 is a rack rotatably supported on the upper surface of the slide plate 26, and 43 is a rack that is engaged with the gear 17.
is a tension spring engaged with the slide plate 26 and the hook 42;
44 is a contact piece formed on the hook 42; 45 is a lever pivotably supported on the slide plate 26; 46 is the lever 4;
5 is a contact portion formed on the lever 46, 47 is a contact piece formed on the lever 46, 48 is a tension spring engaged with the slide plate 26 and the lever 45, and 49 is rotatably supported on the slide plate 26. The eject lever 50 is a roller rotatably supported by the eject lever 49, and 51 is the eject lever 4.
9 is a contact portion rotatably supported, 52 is a contact portion formed on the eject lever 49, 53 is a guide piece formed on the holder side plate 11, and 54 is engaged with the eject lever 49 and the slide plate 26. tension spring 55 is the rack 41
56 is a lever rotatably supported on the holder side plate 12; 57 is a contact portion formed on the lever 56; 58 is a sliding contact piece formed on the lever 56; 59 is a holder side plate. The door is pivotably supported at 11° and 12, and 60 is a guide pin formed on the door 59.

Next, the operation will be explained. When the user inserts the tape cassette 3 into the cassette holder 5, the lid 4 comes into contact with the roller 50, and the eject lever 49 moves to the cwz position shown in the figure.
The contact portion 52 contacts the contact portion 47, and the lever 45 rotates in the CWX direction against the biasing force of the tension spring 48. As a result, the abutting portion 46 abuts the abutting piece 44, so the hook 42 resists the biasing force of the tension spring 43 and c
Rotate in the cwy direction. As a result, the hook 42 and the grip groove 38 engage with each other, thereby preventing the tape cassette 3 from falling off the cassette holder 5. At this time, the switch a comes into contact with the eject lever 49, and the main body of the magnetic recording/reproducing apparatus drives the gear 2 of the power transmission mechanism A.
rotates in the CWZ direction, and the moving plate 39 moves in the X direction via the rack 40 engaged with the gear 2. Therefore, the gear 17 engaged with the rack 41 rotates in the (Wy direction), and the slide plate 26 moves in the X+ force direction via the rack 35. When the slide plate 26 moves in the x1 direction, the cam groove 27
Guide pins 7 to 10 inserted into guide grooves 13 to 16 respectively slide along the shape of each guide groove 13 to 16, and cassette holder 5 moves in the x1 direction. At this time, in order to avoid interference between the power transmission mechanism A provided on the chassis L and the lid 4, the lever 21 is rotated in the wy force direction by sliding contact between the cam 25 and the pressing part 23, and the lid opening/closing piece 24 is rotated in the lint direction. 4, the lift 4 rotates in the ccwy direction.When the cassette holder 5 moves in the The switch C is moved in the z2 direction and mounted on the chassis 1.At this time, the switch C is pushed by the protrusion 55 of the rack 41 and turns on.
The gear 2 of the power transmission mechanism A stops rotating and becomes ready for playing. FIG. 9 is a flowchart showing the above operation.

Next, when a command is sent to eject the tape cassette 3 from the magnetic recording/reproducing device, the gear 2 rotates in the ccwz direction, the movable plate 39 moves in the X direction, and the slide plate 26 moves into the shape of the guide grooves 13 to 16. The cassette holder 5 then moves in the x8 direction. At this time, the sliding contact piece 58 contacts the guide pin 10, and the lever 56 rotates in the cwy direction. Therefore, the switch C comes into contact with the convex portion 55, the switch C is turned on, and the rotational drive of the gear 2 is stopped. At this time, the contact portion 51 is released from contact with the guide piece 53, the lever 49 is rotated in the CWZ direction by the biasing force of the tension spring 54, and the roller 50 is moved toward the tape cassette 3.
is discharged from the cassette holder 5 in the X direction.

[Problem to be solved by the invention]

The conventional tape cassette loading device is constructed as described above, and the cassette holder 5 has its four guide pins 7 to 10 connected to the guide grooves 13 to 16 and the cam groove 27
Since the slide plate 26 moves by sliding contact with the slide plate 26, the friction during sliding is large, and the driving force required to move the slide plate 26 is larger than necessary, and the reduction ratio of the power transmission mechanism must be set large. Not only that, but the loading time became longer and the power consumption of the drive motor also increased.

In addition, a dedicated lever 21 is required for opening and closing the lid 4, and the power for rotating this lever 21 is distributed and transmitted from the power for moving the cassette holder 5, so the number of parts increases. The equipment became more complex and the load on power transmission increased.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a tape cassette loading device with a small loading driving force and a small number of parts.

[Means to solve the problem]

The tape cassette loading device according to the present invention connects a cassette holder rotatably directly to an arm that rotates by receiving power from a power transmission mechanism, and also connects a pair of guide pins provided on both sides of the cassette holder to magnetically record and reproduce It is in sliding contact with the guide groove of the device.

Further, the tape cassette loading device according to the present invention includes an arm that is directly rotatably connected to the cassette holder and that transmits power transmitted from the power transmission mechanism via the cam gear to the cassette holder to move the cassette holder in the front-back direction. A lever is provided which engages with a cam gear to move the cassette holder in the vertical direction and engages with a guide pin of the door into which the tape cassette is inserted to open and close the door.

Further, the tape cassette loading device according to the present invention includes a lid opening/closing piece that is directly rotatably connected to the cassette holder and that engages with the lid to open and close the lid on an arm that transmits power from the power transmission mechanism to the cassette holder. It was established.

(Function) The cassette holder of the present invention moves according to the rotation of the arm and the sliding contact between the pair of guide pins and the guide groove,
The posture is maintained by the pivot point between the arm and the cassette holder and a pair of guide pins.

In this invention, the door is also opened and closed by a lever that engages with a cam gear and moves the cassette holder in the vertical direction.

In this invention, the relative position of the cassette holder and the arm changes due to the rotation of the arm, so that the lid opening/closing piece formed on the arm comes into contact with the lid during loading, and the lid is rotated.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. 1st
In Figures 1 to 4, 1 to 8 are the same as the conventional one. 10
0 was attached to Sharn 1/”1 Uzing, 101
, 102 are guide grooves formed in the housing 100, 103 and 104 are levers rotatably supported on the side surfaces of the housing 100, and 105 has both ends connected to the lever 10.
3. An arm supported by 104 and rotatably supported by the cassette holder 5; 105a a connecting portion of the arm 105; 106.107 a lid opening/closing piece formed at each end of the arm 105; 108, IO;・9 is a tension spring engaged with the levers 103, 104 and both ends of the arm 105, respectively; 110, 111 are abutting portions formed on the levers 103 and 104, respectively; 112° and 113 are the levers 103,
A guide pin is implanted in 104, cam gears 114 and 115 are each rotatably supported on the side surface of the housing 100, and 116 and 117 are cam grooves formed in the cam gears 114 and 115, respectively, through which the guide pins 112 and 113 are inserted. ,
118 and 119 are cam grooves formed in the cam gears 114 and 115, respectively; 120 and 121 are levers rotatably supported on the side surfaces of the housing 100; 122 and 123 are guide pins implanted in the lever 120 and 121; 12
4.125 is a contact piece formed on each lever 120, 121, 126.127 is a biasing spring locked on a part of lever 120, 121, respectively, 128 is a recess formed on cam gear 114, 129 is a A convex portion formed on the cam gear 115; 130 is an eject lever rotatably supported on the upper surface of the housing 100; 131 is an eject lever 1;
30 is a roller rotatably supported; 132 is a contact piece formed on the eject lever 130; 133 is a contact piece 1;
32 is a sliding contact portion formed on the eject lever 1, and 134 is the eject lever 1.
A locking portion 135 is formed on the eject lever 1.
a tension spring connected between 30 and housing 100, 13;
Reference numeral 6 denotes a synchronizing shaft rotatably supported near both ends on the side surface of the housing 100, 137 is fixed to the synchronizing shaft 136, and the power transmitter 1. Gear engaged with gear 2 of A, 138,1
39 are gears fixed to both ends of the synchronization shaft 136, 14
0 is a guide groove formed in the housing 100, 141
142 is a guide pin formed on the door 141;
143 is a contact piece formed on the lever 121, and 144 is a hook formed on the pressing spring 6.

Next, the operation will be explained. Tape cassette 3 x1
When inserted in the direction, the lid 4 comes into contact with the roller 131,
The eject lever 130 rotates in the CWZ direction, the switch a turns off, and in response to the signal command, the power transmission mechanism A of the magnetic recording and reproducing device operates, and the gear 2 shifts to the cwy.
The power is transmitted to gear 1 through gear 137.
38°139, and the cam gears 114 and 115 are
Rotate in the wy direction. As a result, the guide pin 122
The lever 120 rotates in the cwy direction due to sliding contact between the guide pin 123 and the cam groove 118, and similarly, the lever 121 rotates in the cwy direction due to the sliding contact between the guide pin 123 and the cam groove 119. At the same time, the lever 103 rotates in the cwy direction due to the sliding contact between the guide pin 112 and the cam groove 116, and the guide pin 1
13 and the cam groove 117, the lever 104 becomes cwy.
rotate in the direction. Further, the arm 105 has a contact portion 110Il.
1 and rotated in the cwy direction. When the arm 105 rotates in the (wy force direction), the cassette holder 5 rotatably supported by the arm 105 moves in the
33 and rotates the eject lever 130 in the CWZ direction.

During this process, in order to avoid interference between the power transmission mechanism A of the magnetic recording and reproducing device and the tape cassette 3, the lid opening/closing pieces 106 and 107 of the arm 105 abut against the lid 4 as shown in FIG. 6, and move the lid 4 in the ccwy direction. Rotate to. When the tape cassette 3 moves to the top surface of the magnetic recording/reproducing device, the shape of the cam grooves 116 and 117 causes the levers 103 and 104 to move.
The rotation of the arm 105 is stopped, and the position of the arm 105 is fixed. At the same time, due to the shape of the cam grooves 11B and 119, the lever 120
．． 121 rotates in the CCWy direction. At this time, the guide pin 7.8 comes into contact with the lever 120.121, the cassette holder 5 rotates in the ccwy direction around the rotation shaft supported by the arm 105, and the tape cassette 3 is attached to the chassis 1. When the tape cassette 3 is attached to the chassis 1, the convex portion 129 comes into contact with the switch b, which turns on, and the gear 2 of the power transmission mechanism stops. Although it attempts to rotate in the ccwz direction due to the urging force of , it slides into contact with the connecting portion 105a! 33 are in contact with each other, rotation is prevented.

Next, when ejecting the tape cassette 3 from the chassis 1, the gear 2 rotates in the ccwy direction, and its driving force is 11
It is transmitted to cam gears 114 and 115 via 37 to 139, and rotates in the ccwy direction. As a result, lever 1
20, 121 rotates in the cwy direction, and its contact piece 124
．． 125 contacts the guide pin 7.8 and rotates the cassette holder 5 in the cwy direction. At the same time, the contact piece 143 formed on the lever 121 contacts the guide pin 142,
The door 141 is rotated in the c cwy direction. Cam gear 1
14.115 rotates further, the cam groove 116.11
Due to the shape of 7, the levers 103 and 104 rotate in the ccwy direction and move the cassette holder 5 in the Xt force direction.
At this time, the door 141 has already been opened by the lever 121, so there is no interference between the tape cassette 3 and the door 141. When the guide pin 7.8 moves to the vicinity of the end of the guide grooves 101, 102, the switch C enters the recess 128. , switch C is turned off and the power transmission mechanism is stopped. At this time, the sliding contact portion 133 is released from sliding contact with the connecting portion 105a, and the eject lever 130 is released from the tension spring 135.
The roller 13 rotates in the c cwz direction due to the urging force of
1 ejects the tape cassette 3 from the cassette holder 5 in the X direction against the biasing force of the hook 144, and the eject lever 130 stops at the position where its locking portion 134 abuts the end surface of the guide groove 140. At this time, the contact piece 132 is located above the connecting part 105a, so if the user accidentally inserts an object other than the regular tape cassette in this state, a load will be applied to the cassette holder 5 in the X1 direction. ,
Since the connecting portion 105a is prevented from rotating in the ccwy direction by the contact piece 132, the switch a is not turned off and malfunction is prevented. FIG. 5 is a flowchart showing the above operation.

〔Effect of the invention〕

As described above, according to the present invention, the cassette holder is rotatably connected directly to the arm that rotates by receiving power from the power transmission mechanism, and the pair of guide pins provided on both sides of the cassette holder are used to guide the housing. Since the cassette holder is configured so that it slides into the groove and moves according to the movement of the arm, there is little friction when the cassette holder moves.
The transmitted driving force can be small, the reduction ratio can be reduced, the loading time can be shortened, and the power consumption of the drive motor can be reduced.

Further, according to the present invention, the door is also opened and closed by the arm that moves the cassette holder in the vertical direction, reducing the number of parts.

Further, according to the present invention, the lid is also opened and closed by the arm that moves the cassette holder, which reduces the number of parts and reduces the loading driving force.

[Brief explanation of drawings]

Figures 1 to 4 are conceptual perspective views and side views of the device of this invention;
A plan view and a cross-sectional plan view of main parts, FIG. 5 is a flowchart showing the operation of the device of the present invention, FIGS. 6 and 7 are explanatory diagrams of the operation of the device of the invention, and FIGS. 8 and 9 are conceptual diagrams of the conventional device. FIG. 2 is a perspective view and a flowchart. 2... Gear, 3... Tape cassette, 4... Lid, 5... Cassette holder, 7, 8... Guide pin, 100... Housing, 101, 102... Guide groove, 1o3゜104.120.121...Lever
105...Arm, 106.107...Lid opening/closing piece, 114°115...Cam gear, 141...Door. Note that the same reference numerals in the figures indicate the same or equivalent parts. Agent Masuo Oiwa Figure 9 Month/Date of 1989

Claims (3)

[Claims] (1) In a tape cassette loading device that inserts a tape cassette into a cassette holder and mounts the tape cassette on a magnetic recording/playback device, the cassette holder is rotatably connected directly to an arm that rotates by receiving power from a power transmission mechanism. A tape cassette loading device characterized in that a pair of guide pins provided on both sides of the cassette holder are brought into sliding contact with a guide groove of a magnetic recording/reproducing device. (2) In a tape cassette loading device that inserts a tape cassette into a cassette holder and attaches the tape cassette to a magnetic recording/reproducing device, the power is directly rotatably connected to the cassette holder and is transmitted from a power transmission mechanism via a cam gear. An arm that transmits power to the cassette holder to move the cassette holder back and forth, and a lever that engages with a cam gear to move the cassette holder up and down and also engages with a guide pin on the door into which the tape cassette is inserted to open and close the door. A tape cassette loading device characterized by comprising: (3) In a tape cassette loading device in which a tape cassette having a lid for protecting the magnetic tape is inserted into a cassette holder and the tape cassette is mounted on a magnetic recording/reproducing device, the tape cassette is directly rotatably connected to the cassette holder;
A tape cassette loading device characterized in that a lid opening/closing piece that opens and closes the lid by engaging with the lid is provided on an arm that transmits power from a power transmission mechanism to a cassette holder.