JPH05151671A - Tape cassette loading device - Google Patents

Abstract

PURPOSE:To improve usability by sliding and moving a cassette holder where a holder rink is rotated along a guide groove and engaging a hook attached to an ejector rotatably into a clip groove. CONSTITUTION:A lead part 4 is abutted on ant abutting part 109 when a tape cassette 3 is inserted into a cassette holder 5. Then, the elector 107 is moved to right direction and the hook is lowered along a slant part and engaged with a grip. Simultaneously, eject levers 106, 107 are rotated clockwise and a guide pin 117 is detached from a switch 144 and a capstan motor is rotated and transmits driving power to a reduction gear 160. The elector is slid and moved in right direction and the cassette 3 is moved to right direction by an engaging part engaging with the clip groove 3a. Although the cassette is slid in right direction, the cassette is not slidden since it is abutted on flue tip part 156 of a slider 155 and the tip part is opened relatively to the cassette.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape cassette loading device provided in a magnetic recording / reproducing apparatus.

[0002]

2. Description of the Related Art FIG.
FIG. 1 is a conceptual perspective view showing a conventional tape cassette loading device shown in Japanese Patent Laid-Open Publication No. JP-A-2003-242, in which 1 is a chassis of a magnetic recording / reproducing device, 2 is a gear of a power transmission mechanism A provided in the chassis 1, and 3 is a tape. A cassette 3a is a grip groove 4 formed in the tape cassette 3, a lid rotatably supported by the tape cassette 3, 5 is a cassette holder holding the tape cassette 3, and 6 is attached to the cassette holder 5. The presser springs 7, 8 are guide pins 9, 9 attached to the rear of both side surfaces of the cassette holder 5,
10 is a guide pin attached to the front of each side of the cassette holder 5, 11 and 12 are holder side plates attached to both sides of the chassis 1, and 13 and 14 are guide grooves formed in the holder side plates 11 and 12, respectively. , 15, 16 is 1
Like 3 and 14, they are guide grooves formed in the holder side plates 11 and 12, respectively.

Reference numerals 17 and 18 denote holder side plates 11 and 12, respectively.
Gears pivotally supported on the guide holder, 19 is a guide groove formed on the holder side plate 12, 20 is a guide groove formed on the cassette holder 5, 21 is a lever engaged with the guide grooves 19 and 20, and 22 is a lever 21. Pin 23 inserted in the guide groove 19 and the guide groove 20, and 23 is the lever 21.
A pressing part formed on the lever, 24 a lid opener formed on the lever 21, 25 a cam formed on the holder side plate 12, 26 a slide plate provided outside the holder side plates 11 and 12, 27 and 28 Cam grooves 29 and 30 formed on the side surfaces of the slide plate 26 are cam grooves formed on the slide plate 26, 31 and 32 are guide grooves formed on the side surfaces of the slide plate 26, and 33 and 34 are slide plates. Two
Guide grooves 35 and 36 formed on the side surfaces of the rack 6 are racks attached to the side surfaces of the slide plate 26, respectively.

37 and 38 are guide pins that are respectively implanted in the holder side plates 11 and 12 and are inserted into the guide grooves 31 and 32, and 39 is a movable plate 40 provided outside the slide plate 26, which is a movable plate. , A rack engaged with the gear 2 of the power transmission mechanism A, 41 a rack formed on the moving plate 39 and engaged with the gear 17, and 42 a hook pivotably supported on the upper surface of the slide plate 26. , 43 are slide plates 26
And a tension spring engaged with the hook 42, 44 is the hook 42
A contact piece formed on the slide plate 26, a lever rotatably supported on the slide plate 26, a contact portion formed on the lever 45, a contact piece formed on the lever 45, and a reference numeral 48 A tension spring 49 engaged with the slide plate 26 and the lever 45,
Is an eject lever pivotally supported by the slide plate 26, 50 is a roller rotatably supported by the eject lever 49, 51 is an abutting portion formed on the eject lever 49, and 52 is formed on the eject lever 49. Abutting portions 53, 53 are guide pieces formed on the holder side plate 11,
Reference numeral 4 is a tension spring engaged with the eject lever 49 and the slide plate 26, 55 is a convex portion formed on the rack 41, and 56 is a protrusion.
Is a lever 5 rotatably supported on the holder side plate 12,
7 is an abutting portion formed on the lever 56, and 58 is the lever 56.
Is a sliding contact piece formed on the door, 59 is a door pivotally supported by the holder side plates 11 and 12, and 60 is a guide pin formed on the door 59.

Next, the operation will be described. When the user inserts the tape cassette 3 into the cassette holder 5, the lid 4 contacts the roller 50, the eject lever 49 rotates in the cwz direction, the contact portion 52 contacts the contact piece 47, and the lever 45 moves. Cwx against the biasing force of the tension spring 48
Rotate in the direction. Then, since the contact portion 46 contacts the contact piece 44, the hook 42 rotates in the ccwy direction against the biasing force of the tension spring 43. Then, the hook 42 and the grip groove 3a are engaged with each other to positively prevent the tape cassette 3 from falling off the cassette holder 5. At this time, the switch a contacts the eject lever 49, the magnetic recording / reproducing apparatus main body drives the gear 2 of the power transmission mechanism A, the gear 2 rotates in the cwz direction, and the rack 40 engaged with the gear 2 receives power. The moving plate 39 moves in the x2 direction. Then, the gear 17 engaged with the rack 41 rotates in the cwy direction and thus receives a driving force from the rack 35 engaged with the gear 17, and the slide plate 26 moves in the x1 direction.

When the slide plate 26 moves in the x1 direction,
The cam grooves 27, 28, 29, 30 and the guide groove 13,
Guide pins 7, 8 respectively inserted into 14, 15, 16
Since 9 and 11 slide along the shape of each guide groove, the cassette holder 5 moves in the x1 direction. At this time,
In order to avoid the interference between the functional component A provided on the chassis 1 and the lid 4, the lever 21 is rotated in the cwy direction by the sliding contact between the cam 25 and the pressing portion 23, and the lid opener 24 contacts the lid 4. The lid 4 rotates in the ccwy direction. When the cassette holder 5 moves in the x1 direction and reaches the top of the chassis 1 of the magnetic recording / reproducing apparatus, the cassette holder 5 moves in the z2 direction along the shape of the guide grooves 13, 14, 15, 16 and is attached to the chassis 1. To be done. At this time, the switch b is pushed by a part of the rack 41 to be in the on state, the rotation of the gear 2 of the power transmission mechanism A is stopped, and the performance is ready.

Next, when a command for ejecting the tape cassette 3 from the magnetic recording / reproducing apparatus is sent, the gear 2 rotates in the ccwz direction, the moving plate 39 moves in the x1 direction, and the slide plate 2 moves.
6 is along the shape of the guide grooves 13, 14, 15, 16
It moves in the z1 direction, and then the cassette holder 5 moves in the x2 direction. At this time, the sliding contact piece 58 is attached to the guide pin 1.
1, the lever 56 rotates in the cwy direction. Then, the switch c comes into contact with the convex portion 55 to be in the on state, and the rotational drive of the gear 2 is stopped. At this time, the contact portion 5
1, the contact with the guide piece 53 is released, the lever 49 is rotated in the cwz direction by the urging force of the tension spring 54, and the roller 50 moves the tape cassette 3 from the cassette holder 5 to x2.
Discharge in the direction.

[0008]

In the conventional tape cassette loading device, the switch is not operated unless the tape cassette is inserted all the way into the device, the usability is poor, and the grip groove of the cassette holder and the hook are kept engaged. For this reason, a hook was provided on the slide plate that moves in the same direction as the movement of the cassette holder, so the number of parts is large, the device becomes complicated, and the sliding operation with the linear cam to rotate the lid opener is performed. However, there was a problem that the driving load was large.

The present invention has been made to solve the above problems, and provides a user-friendly device in which the loading operation is started even when the tape cassette is inserted at a shallow position.

Further, it is possible to provide a simple device having a small number of parts by holding the engagement between the grip groove and the hook without using a dedicated member for moving the hook in the same direction as the cassette holder.

Still another object of the present invention is to provide a power saving device which drives a lid opener without using a linear cam and which has a small driving load.

[0012]

A tape cassette loading device according to the present invention rotatably supports an eject lever on a cassette holder, provides a guide pin on the eject lever, and engages a cam groove formed on a housing. Is something

Further, the ejector is rotatably supported by the eject lever, and the abutment point is disposed on the lid rotation direction side with respect to the straight line extending from the ejector rotation fulcrum and the lid rotation fulcrum. Thus, the ejector is provided with a contact point.

Furthermore, a lid opener is rotatably supported by a holder link rotatably supported by a cassette holder, and a cam groove formed in the lid opener is engaged with a guide pin provided in the cassette holder. It was made.

[0015]

In the tape cassette loading device according to the present invention, when the holder link rotates, the cassette holder follows along the guide groove, and the eject lever rotatably supported by the cassette holder moves along the cam groove. The ejector is moved in the direction in which the cassette holder moves, and the hook rotatably attached to the ejector engages with the grip groove to draw in the tape cassette.

When the lid of the tape cassette is opened, the ejector pivots in the same direction as the pivot direction of the lid around the pivotal fulcrum of the eject lever by the sliding contact and sliding of the lid, and when ejecting the tape cassette, the ejector ejects. When the lever rotates, the sliding contact of the ejector pushes out the lid, and the tape cassette is ejected.

The drive force of the lid opener is transmitted by the rotation of the holder link, and the rotation angle is controlled by the cam groove of the lid opener and the guide pin of the cassette holder.
Open the lid of the tape cassette.

[0018]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to FIGS. Since 1 to 8 are the same as the conventional example, the description is omitted. Reference numeral 100 is a housing attached to the chassis 1, 101 and 102 are guide grooves formed in the housing 100, 103 and 104 are rotatably supported on the side surfaces of the housing 100, and both ends of the cassette holder 5 are rotatable. The holder links supported by 105 are guide portions formed at both ends of the cassette holder 5,
Reference numerals 106 and 107 denote eject levers pivotally supported on the left and right of the cassette holder 5, 108 ejectors pivotally supported on the eject levers 106 and 107, and 109 are ejectors formed on the ejector 108. Contact portion 110, a sliding contact portion formed on the ejector 108, 111 a leaf spring attached to the ejector 108, 112 a hook pivotally supported by the ejector 108, 113 attached to the ejector 108,
Leaf spring urging the hook 112, 114 is the hook 1
12 is a locking portion, 115 is an ejector 108
The slant portion formed on the, 116 is the cassette holder 5
Abutting portions 117, 118 formed on the guide levers 11 and 118 are guide pins 11 and 11 respectively implanted in the eject levers 106 and 107.
Reference numerals 9 and 120 denote cam grooves 121, 1 formed in the housing 100 and having guide pins 117 and 118 inserted therethrough.
Reference numeral 22 is an abutting portion formed on each of the holder links 103 and 104.

Reference numerals 122 and 123 respectively denote holder links 10.
Pulling springs 124, 125 engaged with 3, 104 respectively engage pulling springs 122, 123 at one end, and a retracting lever 126 pivotally supported on the housing 100, 126.
Reference numeral 127 is a contact portion formed on the pull-in levers 124 and 125, 128 is a contact portion formed on the pull-in lever 125, and 129 and 130 are lid openers pivotally supported by the holder links 103 and 104, respectively. , 131,
Numeral 132 is a guide pin which is planted at each end of the cassette holder 5, 133 and 134 are lid openers 129,
Sliding contact portions formed on the respective 130, 135 and 136 are cam grooves formed on the lid openers 129 and 130, respectively.

Reference numerals 137 and 138 denote elevating levers 139 and 1 rotatably supported on both side surfaces of the housing 100, respectively.
Reference numeral 40 denotes biasing springs 141 and 142 attached to the elevating levers 137 and 138, guide portions formed on the elevating levers 137 and 138, and 143 contact portions 144, 145, and 146 formed on the elevating lever 137. Is a switch mounted on the housing 100, 147 is an arm pivotally supported on the housing 100, 148 is a sliding contact portion formed on the arm 147, 149 is a guide pin implanted in the arm 147, and 150 is A lever rotatably supported on the housing 100, 151 is formed on the lever 150, a cam groove through which the guide pin 149 is inserted, 152 is a sliding contact portion formed on the lever 150, and 153 is rotatable on the housing 100. An axially supported shutter, 154 is a guide pin formed on the shutter 153, and 155 is the bottom of the tape cassette 3. Slidably provided the slider 156 is abutting portion formed on the cassette holder 5.

Reference numerals 157 and 158 denote cam gears rotatably supported on both side surfaces of the housing 100, reference numerals 159 are engaged with the cam gears 157 and 158, respectively, and synchronous shafts 159 are rotatably supported on the housing 100, and 159 are synchronous shafts. A reduction gear supported on 160, and a capstan motor 161 supported on the chassis 1.

Next, the loading of the tape cassette loading device of the present invention will be described with reference to FIGS.
The operation of unloading will be described. 6 is a front view of the main part of the cassette holder portion at the start of cassette loading showing the operation of the present invention, FIG. 7 is a front view of the main part of the cassette holder portion during the loading of the cassette showing the operation of the present invention, and FIG. 8 is the present invention. 9 is a front view of the main part of the cassette holder at the end of cassette loading showing the operation of FIG.
Reference numeral 0 is a conceptual diagram for explaining the operation according to the present invention. Further, FIG. 11 is a flow chart showing the operation at the time of loading of the present invention, and FIG. 12 is a flow chart showing the operation at the time of unloading of the present invention. Table 1 shows each symbol used in the conceptual diagrams of FIGS. 9, 10, and 13 and its meaning.

[0023]

[Table 1]

First, the loading operation for mounting the tape cassette 3 on the chassis 1 will be described. In FIG. 9, first, when the tape cassette 3 is inserted into the cassette holder 5, the lid 4 contacts the contact portion 109. Then, the ejector 107 moves in the x1 direction, the hook descends along the slant portion, and engages with the grip. At the same time, the eject levers 106 and 107 rotate clockwise, the guide pin 117 separates from the switch 144, the capstan motor 161 rotates, and the reduction gear 16 moves.
The driving force is transmitted to 0.

This driving force is transmitted from the synchronous shaft 159 to the left and right cam gears 157, 158, and the cam gears 157, 15
8 first rotates the pull-in levers 124 and 125 clockwise, so that the contact portions 126 and 127 and the sliding contact portion 1 are rotated.
The holder link 10 is caused by the contact of each of
3, 104 rotate clockwise, and the cassette holder 5 moves in the x1 direction.

When the cassette holder 5 moves in the x1 direction, the eject levers 106 and 107 pivotally supported by the cassette holder 5 are rotated clockwise by the engagement of the cam grooves 119 and 120 with the guide pins 117 and 118. The ejector follows the x1 direction. Then, the engaging portion engaged with the grip groove 3a is the tape cassette 3
Is moved in the x1 direction. Although the tape cassette slides in the x1 direction, since the tip of the slider 155 is in contact with the contact portion 156, it does not slide in the x1 direction and is relatively opened with respect to the tape cassette.

When the relative angle between the cassette holder 5 and the holder links 103, 104 changes, the lid openers 129, 130 pivotally supported by the holder links 103, 104 have cam grooves 135, 136 and guide pins 131, 132. When the lid of the tape cassette reaches the top of the lid opener, the lid opener rotating clockwise and the tip of the lid come into contact with each other to open the lid. At this time, since the contact portion 109 of the ejector 107 is located above the straight line connecting the pivot fulcrum of the lid 4 and the pivot fulcrum of the ejector, the ejector 10
7 rotates counterclockwise along the rotation of the lid 4 against the biasing force of the leaf spring 111.

Next, the guide pin 7 of the cassette holder 5,
8 moves to the right end of the guide grooves 101, 102, the cam gears 157, 158 cause the lifting levers 137, 12 to move.
8 rotates counterclockwise, and the biasing springs 139 and 140 push down the guide pins 7 and 8 of the cassette holder 5. Then, the cassette holder 5 will be the holder link 103,
When the abutment portion 141 of the elevating lever 137 comes into contact with the switch 145, the capstan motor 161 is rotated around the fulcrum of rotation with respect to 104 in the counterclockwise direction.
Will stop.

Next, the unloading operation will be described. In FIG. 10, when ejecting the tape cassette 105, first, the elevating levers 137 and 138 are moved by the cam gears 157 and 158 that rotate in the opposite direction to the loading direction.
Rotates clockwise, and the guide portions 141 and 142 push up the cassette holder 5. At this time, the guide pin 8 of the cassette holder 5 pushes up the arm 147,
Reference numeral 47 causes the lever 150 to rotate clockwise, and the shutter 153 to rotate counterclockwise to open it.

Next, the pull-in levers 124 and 125 rotate counterclockwise to rotate the holder links 103 and 104 counterclockwise, and the cassette holder 5 moves in the x2 direction. At this time, the lid 4 rotates counterclockwise, and the sliding contact portions 138 and 139 of the lid openers 129 and 130 rotate.
The ejector 107 is rotated clockwise by the biasing force of the leaf spring 111 while the lid 4 and the contact portion 109 slide. Next, the guide pins 117 and 118 of the eject levers 107 and 108 rotate counterclockwise along the cam grooves 119 and 120. Then, the ejector 107 moves in the x2 direction, and the tape cassette 105 in which a part of the lid 4 is in contact with the contact portion 109 slides in the x2 direction. On the way, slant part 1
15 is along the contact portion 116, and the hook 112 is the leaf spring 11.
3 is rotated clockwise against the biasing force of the grip groove 3a.
The locking portion 114 is disengaged from the tape cassette 105, and the tape cassette 105 can be taken out of the apparatus.

When the contact portion 128 of the pull-in lever 125 rotates until it contacts the switch 146, the capstan motor 161 stops, but when the tape insertion opening is blocked by a hand or the like, the holder links 103, 104 The rotation is blocked, and only the pull-in levers 124 and 125 are rotated counterclockwise, and the tension springs 122 and 12 suspended by both are retracted.
3 extends to prevent malfunction. When the force that has prevented the ejection is removed, the holder links 103 and 104 rotate counterclockwise by the urging force of the tension springs 122 and 123, and the unloading operation is completed.

[0032]

When the holder link rotates, the cassette holder follows along the guide groove, and the eject lever pivotally supported by the cassette holder moves in the direction along which the cassette holder moves along the cam groove. The ejector is moved in a follower manner, and the hook rotatably attached to the ejector engages with the grip groove to pull in the tape cassette, so that the loading operation starts even if the tape cassette is inserted at a shallow position. There is an effect that a user-friendly device can be obtained.

When the lid of the tape cassette is opened, the ejector pivots in the same direction as the pivot direction of the lid by the sliding contact and sliding of the lid about the pivot fulcrum of the eject lever, and when ejecting the tape cassette. By rotating the lever, the sliding contact of the ejector pushes out the lid and ejects the tape cassette, so the grip groove and hook are held in engagement without using a special member that moves the hook in the same direction as the cassette holder. There is an effect that a simple device with a small number of parts can be obtained.

The drive force of the lid opener is transmitted by the rotation of the holder link, and the rotation angle is controlled by the cam groove of the lid opener and the guide pin of the cassette holder, so that the lid of the tape cassette is opened. Since the lid opener can be driven without using a linear cam, there is an effect that a power saving device with a small driving load can be obtained.

[Brief description of drawings]

FIG. 1 is a front view showing a cassette holder portion of a tape cassette loading device according to an embodiment of the present invention.

FIG. 2 is a plan view showing a cassette holder portion of FIG.

3 is a front view showing the cassette holder portion of FIG. 1. FIG.

4 is a rear view showing the cassette holder of FIG. 1. FIG.

5 is a side view showing the cassette holder of FIG. 1. FIG.

FIG. 6 is a front view of the main part of the cassette holder portion at the start of cassette loading, showing the operation of the present invention.

FIG. 7 is a front view of the main part of the cassette holder during the cassette loading operation showing the operation of the present invention.

FIG. 8 is a front view of the main part of the cassette holder at the end of cassette loading, showing the operation of the present invention.

FIG. 9 is a conceptual diagram by a shift method showing an operation at the time of loading of the present invention.

FIG. 10 is a conceptual diagram by a shift method showing an operation during unloading of the present invention.

FIG. 11 is a flowchart showing an operation at the time of loading of the present invention.

FIG. 12 is a flowchart showing an operation during unloading of the present invention.

FIG. 13 is a conceptual perspective view showing a conventional tape cassette loading device.

[Explanation of symbols]

 1 Chassis 3 Tape cassette 3a Grip groove 4 Lid 5 Cassette holder 103, 104 Holder link 106, 107 Eject lever 107 Ejector 109 Abutment part 114 Locking part 117, 118 Guide pin 119, 120 Cam groove 129, 130 Lid opener 131, 132 Guide pin 135, 136 Cam groove

Claims (3)

[Claims] 1. In a tape cassette loading device for inserting a tape cassette into a cassette holder to mount the tape cassette on a chassis of a magnetic recording / reproducing apparatus, a locking portion for engaging the grip groove of the tape cassette with the cassette holder, A tape cassette loading characterized in that an eject lever having an ejector having an abutting portion for pushing out the tape cassette is pivotally supported, and a guide pin planted in the eject lever is engaged with a cam groove. apparatus 2. A rotation direction when the lid is opened with respect to an extension of a straight line connecting a rotation fulcrum that pivotally supports the ejector and the eject lever and a rotation fulcrum of a lid provided in the tape cassette. The tape cassette loading device characterized in that the ejector is provided with a contact portion for pushing out the tape cassette to the side. 3. A lid opener that pivotally opens a lid of a tape cassette to a holder link that drives a cassette holder that is pivotally supported by the cassette holder is formed on the lid opener. Tape cassette loading device characterized in that a cam groove is engaged with a guide pin provided on a cassette holder