JPS60164956A - Disk cassette inserting device - Google Patents

Abstract

PURPOSE:To enable releasing from pressing of a center core by a cassette pressing member after completion of pressing operation of an upper cover, and reduce torque that rotates a magnetic sheet by providing an elastic clicking mechanism. CONSTITUTION:Pressing force is applied to the upper cover 12. Before the upper cover 12 is fully lowered, a pressing spring 39 comes into contact with the center core 102, and the center core 102 is pressed in a spindle 28 by the elastic force and elastic force of a spring 37 that presses a steel ball 38 in a hole 35a. When the center core 102 arrives at a socket 28a, a cassette pressing plate 31 moves to the upper cover 12 side against the force of the spring 37 and the steel ball 38 energizes the cassette pressing plate 31 to the upper cover 12 side while getting out from the hole 35a and moving to a hole 35b side. Thus, the pressing plate 31 is released from pressing to the center core 102, and the pressing spring 39 and center core 102 are separated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applicable to, for example, an electronic still camera system in which a magnetic sheet supported by a center core is engaged with a spindle and rotated, and a magnetic head records and reproduces signals. The present invention relates to a disc cassette insertion device used.

Configuration of conventional example and its problems In the conventional disfucus cent insertion device, the center core is pressed in order to attach the magnetic sheet to the spindle of the device body, and even after centering the center core, the pressure on the center core is released. Therefore, large torque is required to rotate the magnetic sheet. In addition, in order to eliminate the above-mentioned oppression on the center core, there are some that use magnets to attract the center core and provide centering springs on the center core to perform centering, but in this case, the attraction force of the magnet and the centering spring High precision is required to manage the relative relationship with the strength of the elastic force of the spring, resulting in high costs.

OBJECTS OF THE INVENTION The present invention eliminates the drawbacks of the conventional disk cassette insertion device, and has a simple configuration that enables reliable insertion of the center core into the spindle and, after completion of the centering operation, the insertion of the center core into the center core. The purpose is to enable rotation of the magnetic sheet at low cost and with small torque by releasing the pressure.

Structure of the Invention The present invention provides an apparatus in which a disk cassette rotatably stores a magnetic sheet supported by a center core inside the apparatus main body, and the center core and a spindle on the apparatus main body side are engaged to rotate the magnetic sheet. A first position that enables recording or reproduction by the magnetic head on the main body side and positions the casing of the disk cassette using a positioning member on the apparatus main body side, and a second position that allows the disk cassette to be attached and detached outside the apparatus main body. A disk cassette insertion device for transferring between two positions, which includes a cassette mounting plate for storing and approximately positioning a disk cassette, and an elastic lick means arranged so as to be able to hold the disk cassette in two positions. In the second position, the cassette mounting plate is opened from other members to an extent that does not hinder insertion and ejection of the disk cassette,
After the cassette mounting plate moves to the first position, as the top cover moves, the pushing member comes into contact with the center core and uses its elastic force to firmly push the center core into the spindle, and then before the top cover finishes moving. A disk cassette insertion device configured to be detached from a center core by a click means, and provided with a release member on the device main body side for returning to the state at the second position when returning from the first position to the second position. This allows the magnetic sheet to be rotated at low cost and with small torque.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing the configuration of a disk cassette insertion device according to the present invention, and FIG. 2 is a front view of the disk cassette insertion device. 1 and 2, 1 is a board, 2 is a stop plate fixed to the board 1, 3 is a U-shaped frame, and one end has a groove for holding a spring 5a between it and the board 1. 3b with holes 7a on both sides.
.

7b, and is held by support shafts 4a, 4b provided on support plates 6a, 6b fixed to the substrate 1. There is still a protrusion 8 on the other side. It has a spring hanging pin 9, and further has holes 10a and 10b on both sides.

Reference numeral 12 denotes an upper lid having claws 12a and 12b on both sides, and a support shaft 2 provided on a hook support fitting 25 fixed to the base plate 1.
It has a square hole 13 at a position where it can be engaged with the hook 21 held by the frame 3, and a spring hook pin 14, which holds the spring 6b between it and the pin 9 of the frame 3. Furthermore, there are holes 17a on both sides.

17b. 16 is the drive lever and frame 3
The bottle 11 provided in the upper cover 12 is engaged with the elongated hole 16b, and the pin 16 provided in the upper cover 12 is engaged with the elongated hole 16c, respectively, with the frame 3 and the upper cover 12. Further, the hole 16a is fitted with a support shaft 23 provided on a support fitting 22 fixed to the substrate 1, and rotatably holds the drive lever 16. Although the opposite side has the same configuration, it is indicated by the same number and the explanation will be omitted. 18 is a mounting plate on which a disk cassette (not shown) is placed; It has elongated holes 19a and 19b.

Further, the holes 18a and 18N) respectively hold springs 27a and 27b between them and the substrate 1.

2o is the support shaft, 7L'-43 (D hole 10a, 1
ob.

Holes 17a and 17b in the top lid 12 and elongated hole 19 in the mounting plate 18
It passes through a and 19b. A spindle 28 is positioned by being engaged with a spindle shaft 3o fitted into a spindle bearing 29 fixed to the substrate 1. Note that the spindle 28 is connected to the motor by a belt under the board 1.
However, the explanation is omitted here.

Next, the detailed configuration of the cassette pushing member will be explained with reference to the parts perspective view shown in FIG. 3. Figure 1,
In FIG. 3, a support member 32 is attached to a cassette holding plate 31.
．． A click support member 33 is provided, and the support member 3
2 has a through hole 32a, the click support member 33 has a bottomed hole 33a, and the bottomed hole 33a has a spring 3.
7 and a steel ball 38 are inserted. Cassette holding plate 31
is rotatably held by a support shaft 34 installed in a cassette push-in support fitting 35. At this time, the above-mentioned steel ball 38 is inserted into the hole 36a or 35b provided in the spring 3.
7 and has a click function when the presser plate 31 rotates. Reference numeral 36 denotes a cassette push-in support metal fitting which has a hole 36a and fits into the support shaft 34 to rotatably hold the presser plate 31.

The support fittings 35 and 36 are fixed to the top cover 12.

Furthermore, a cassette presser spring 39 is attached to one end of the presser plate 31.
It is controlled. 24 is a click return plate fixed to the substrate 1.

Next, the operation will be explained using two views: FIG. 4, which is a front partial sectional view when opened, and FIG. 6, which is a front partial sectional view when the cassette is installed. In Fig. 4, the frame 3 has a spring 5a (not shown).
The support shafts 4a, 4b are moved by the elastic force received in the direction of the arrow from
The projection 8 of the frame 3 is rotated using the frame 3 as a fulcrum until it comes into contact with the stop plate 2, and the upper cover 12 is rotated as shown in the figure by the movement of the support shaft 2o and the drive lever 16 engaged with the frame 3. Positioned in the state. The looseness at that time is removed by the elastic force of the spring 5b held by the pin 9 of the frame 3 and the pin 14 of the upper cover 12. Further, the position of the mounting plate 18 is pulled in the direction of arrow B by the elastic force of springs 27a and 27b held by the holes 18a and 18b and the substrate 1.
The support shaft 2o is in contact with the end of the disc cassette b, and the lower side is supported and held by the claws 12a and 12b of the upper lid 12 so that there is a gap between the upper lid 12 and the disk cassette to the extent that insertion and ejection of the disk cassette is not hindered. At this time, the above-mentioned state of the cassette pushing member is such that the steel ball 38 is engaged with the hole 35a of the cassette pushing support fitting 35, and the presser spring 39 is separated from the center core 102 that supports the magnetic 7-tooth 101 in the cassette 100. There is.

The mounting operation of the cassette 100 from FIG. 4 to FIG.
2 lowers the drive lever 16 and the support shaft 20 while rotating around the support shaft 20. Therefore, the frame 3 has support shafts 4a, 4
It lowers in conjunction with the upper cover 12 using h as a fulcrum. At this time, the mounting plate 18 is lowered with the movement of the support shaft 20 and the upper cover 12, its height is determined by the height determining pin 103, etc., and it is held by the aforementioned springs 27a and 27b. Placement plate 18
The cassette 100 stored in the cassette 100 is also lowered in the same way, positioned by a positioning pin 104, etc., and held by a cassette holding spring 105 attached to the upper lid 12. During this operation, that is, before the upper cover has yet to fully lowered from FIG. 4 to FIG.
Press a.

The center core 102 is pushed into the spindle 28 by the elastic force of the spring 370. When the center core 102 reaches the receiving part 28a of the spindle 28, the spring 37
The cassette holding plate 31 resists the force of the upper lid 12IlIl.
Then, the steel ball 38 is pulled out from the hole 35a and is about to move toward the hole Ssb, thereby urging the cassette holding plate 31 toward the upper lid 12. In this way, the presser plate 31 is released from being pressed against the center core 102, and the presser spring 39 and the center core 1, ``02'' are separated from each other.After this, the upper cover 12 comes to the position shown in FIG. Although the entire body is subjected to a force in the direction of the arrow by the spring 5a, the hook 21 engaged with the square hole 13 of the top cover 12 maintains the stopped state as shown in FIG. '105 [Therefore, the hook 21 is biased toward the top lid 12 side.
05 and is removed from the square hole 13, the upper cover 12. Frame 3. The mounting plate 18 performs the reverse operation described above and moves to the state shown in FIG. 4. At this time, as the click support member 33 comes into contact with the click return plate 24, the cassette holding plate 31 is moved downward against the biasing force of the spring 37, and the steel balls 38 that have been pulled out from the holes 35& are Move to the hole 35a side again and
Return to the state shown in the diagram. Although not shown, the center core 102 is provided with a spring for a center ring.

According to the disk cassette insertion device of the present invention as described in detail, the center core can be reliably inserted into the spindle and the centering operation can be performed simply by pressing the upper cover 12, and the elastic click mechanism is used. By having this, it is possible to release the pressure on the center core by the cassette pushing member after the above-mentioned operation is completed, which is extremely effective in reducing the torque for rotating the magnetic sheet at low cost.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a disk cassette insertion device according to an embodiment of the present invention, Fig. 2 is a front view of the device, Fig. 3 is a perspective view of main parts of the device, and Fig. 4 is a state in which the device is opened. FIG. 5 is a front partial sectional view of the device when the cassette is installed. 3...Frame, 12...Top lid, 18
...Place plate, 24...Click return plate, 28...Spindle, 31...Cassette holding plate, 33...Click support Parts, 3
5...Support metal fittings, 3.....Spring, 38
...Steel ball, 100 ...Cassette, 10
1...magnetic sheet, 1o2...center core, 1o3...height setting bin, 104...
...Positioning bin, 105...Cassette holding spring.

Claims (1)

[Claims] A spindle provided on a main body board, an inner frame into which a disk cassette for storing a magnetic sheet supported by a center core is attached, and a pushing member for pushing the center core so as to engage the center core with the spindle. ,
an outer frame provided on the opposite side of the middle frame via the pushing member, and the pushing member being able to be held in two positions;
a click means provided on the outer frame, and a release means for releasing the holding of the pushing member at one position by the click means, and as the outer frame is moved in the direction of the inner frame, , the pushing member is brought into contact with the center core to engage the center core with the spindle, and the pushing member is held at the one position by the click means before the movement of the outer frame is completed. The disk cassette is characterized in that as the outer frame is moved away from the center core and the outer frame is moved in a direction away from the middle frame, the holding of the pushing member at the one position is released by the release means. Insertion device.