JPH03171462A - Magnetic tape recording and reproducing device - Google Patents

Abstract

PURPOSE:To prevent parts incapable of recording and reproducing in a tape from increasing and the tape from slackening and damaging by making a guide groove on the take-up side longer than a guide groove on the feeding side and making moreover a moving amt. ratio of a tape loading member on the feeding side to that on the take-up side variable. CONSTITUTION:A loading completion position E of the take-up side guide groove 18 is shifted more than a loading completion position E of the feeding side guide groove 5 by a back part of a drum 3. Consequently, a part infeasible of reproducing on a tape recorded by a different device is not generated. Then, the moving amt. ratio of the feeding side and take-up side tape loading members 20c and 21c to each other is made different between a 1st position F and a 2nd position C from between the 1st position F and the loading completion position E, and a reduction ratio of gears 32 and 33 for driving the tape loading members is varied in accordance with the above ratio. Consequently, the loading time can always be the same, and the timing for pressing pole bases 20a and 21a on the tape feeding side and the tape take-up side against a drum base can be equalized. By this method, the slackening of the tape and the occurrence of damage to the tape can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic recording and reproducing apparatus, and more particularly to a magnetic tape recording and reproducing apparatus configured so that magnetic tape cassettes of different sizes can be loaded therein.

2- [Prior Art] Japanese Patent Application Laid-Open No. 1-125752 discloses a system in which a supply side guide groove and a take-up side guide groove are formed on the (left side) and right side of a drum, respectively, to guide the movement of a pair of tape loading members. , these two guide grooves are extended to the position where a smaller tape cassette is mounted to the mark 7{0 tape force set 1, and when the standard tape cassette is mounted, the pair of tape loading members are moved to the mark by the loading member driving means. f (I! tape force set 1-) is moved to the first position (marker 1 (li tape force set unloading position)), and when a small tape cassette is installed, the pair of tape loading members is driven by the loading member drive. After the pair of tape loading members are inserted into the standard or small tape cassette, the loading member driving means moves the pair of tape loading members to a second position (small tape force set unloading position) where the tape loading members are inserted into the small tape cassette. Move the guide to the loading completion position and mark Y {9
Alternatively, an apparatus has been disclosed that performs magnetic recording and reproduction by winding a tape in a small tape cassette around the outer periphery of a drum over a predetermined angle range.

In this way, in a magnetic tape recording and reproducing device that can be used for both standard and small tape cassettes, the tape pulled out from the tape cassette is narrowed by the capstan and the vinyl roller, not only when the standard tape cassette 1 is installed, but also when a small tape cassette is installed. Since it is necessary to hold the capstan for a long time, it is necessary to pull out the tape, rearrange the capstan outside the formed tape path, and place the pinch roller on the 1'' side.

Therefore, as shown in FIG. 7, when the tape 2 is pulled out to the loading completion position and wound around the drum 3, the capstan 9, the guide ball "-]- and the small force sets 1 to J. The Vinci roller 10 is placed in the triangular tape path formed by O.O.O.

In order to prevent the pinch roller 10 from hitting the table 2 that has formed the path, sufficient space is required in the area where the pinch roller 10 is located. How to set the tape force on the drum 3 (})) Figure 9 shows 71 It was... [Invention or P17/I! ．． 1.ll while trying to
j! According to the method (f1), 1 hera l13 is 1
- Mechanism l1 becomes more user-friendly and the necessary space expands by the amount of movement. Also, since the tape 2 to be pulled out is longer, the rolling 11"? interval is longer t1, and the magnetic field is flat.
I', Teiti2 ay! 'I live 21: The A part increases (Kao at the beginning of the tape roll), 1 1.1} Self (L)) / 7;: As a result, Guy 1 ~ Bonore IJ moves to the right, As the mechanism l1 becomes larger, the required space increases. ．． Particularly, on the right side of the magnetic tape ifu recording/reproducing device 1d, it is necessary to provide space for the pinch roller drive mechanism, and the increase in space on the right side is undesirable. Also, if Guy 11 ball [1 moves too far to the right, the tape will hit 4:K' (fI tape Caseno 1 Issou Waka IIv with Caseno 4?-Half). To prevent this, the tape is shown in Figure 10 (If the ball 202 is not installed, the table bus will become 201 and the tape cassette will be ``:j1.'')
Since the tape 'J{Jl'■ angle increases, the tape tension increases and becomes 'C'.

The present invention provides a magnetic tape recording system 1q and a storage system 1d that solves the above-mentioned conventional problems.

[Means for solving problems]

The magnetic tape NI2 record IIf I1 unit of the present invention has the first
A smaller second tape force sensor 1- is selectively attached to the tape cassette and the first tape force set 1, and a supply side guide iK and a take-up side guide guide the movement of the pair of tape loading members respectively l' ill for 1 each
- A second tape force sensor 1~ is formed on the first side and the second side of the tape cassette, and two guide grooves are attached to the tape cassette smaller than the first tape cassette (i'/.lV (and extended). , 1st
When the tape cassette is installed, the Tesorhode ink section 41 of the tJ is moved to the first tape cassette 1 through the IB river 7 (which is inserted into the first tape cassette 1) by the rotor section 44, and the second tape force is applied. When Seso 1 is attached,
- Loading part u1 of the pair of table load ink members
The second (I) directly enters the second tape cassette by one thousand steps
'lj VI to 8 iI) +, -k, 1's tape loading member H'jlj material was trapped in the first and 1i second tape force sensor 1, phantom tape loading section +4
From the loading part Io$Q4 T'Ide 1,
Move the tape along the drum to the loading completion position, and wrap the first or second tape around the outer circumference of the drum. +Tj cow clothes 1i' (in J3, 1st i:
'(lf'. At t9 between J and loading completion {<7] Iη, 0 The member beating [stage changes the reduction ratio between the first position i7 (and the 24th +"i F+) and the reduction ratio between the first position 1a and the loading position 5°4 on the supply side and the winding It is characterized by having a transmission means for changing the speed at the side.

[Servings]

7 In the magnetic tape recording/reproducing apparatus having the configuration L, the supply side guide fl'lf! Since the length of the winding side guide rail is increased by cutting the length of the winding side guide rail, there is a dead space due to f. Since we are simply using the same part of the drive l1 that was previously used for the IT effect, the mechanism will not be large, and there will be parts that will not be able to play back tapes recorded with another device. There is no. Further, since there is no need to provide an additional guy 11 ball and route the tape around the fishing rod, the tape tension does not increase.

Further, with the above structure, the tape loading unit moving star ratio on the supply side and the winding side is adjusted between the first position and the second position, and between the first position and the loading completion position. but! A: Since this is done by changing the reduction ratio of the gear that drives the tape loading member, it is necessary to load 11 times on the tape 0 (on the feeding side and on the tape taking side). The same problem can be achieved, and the timing of compressing the pole base 1 to the ram base on the tape unfeeding side and the tape winding side can be made the same.

[Tip example]

8- The first section shows a detailed example of a magnetic tape recording and reproducing device using the "Kihatsu 1 Ri", and the magnetic tape 2 is connected to a small tape force set l-. 1. O O or mark 7 (Ij tape force seno 1
-200 to complete loading position F11'. The figure shows the point at which the first part has been written out. Chassis 4 1~ra l13
of! , On one side, there is a guy F i.l.ly 5 in the form of the Teso fj (transfer of the ship's side loading section H!l! , the following guide rail plate 12 is installed,
Small tape force set l-1-00 or mark/(f! Tape force set l-200 to U-tink complete f1
'I. The magnetic tape 2 pulled out from the position I is connected to the tension ball 6 and all 16i? l'1 husband head 7 to 2
1 contact, AJ (winding to 1 is 3 via feeding side rolling ball 20c and impedance roller etc.)
↑The winding side rolling ball 2Jc, the audio head and the controller 1 are brought into contact with the roll head 8, capstan 9, pinch roller 10, guide ball II, etc., forming a sliding tape path.

In the embodiment shown in FIG. 1, the second opening is a small tape case.
-1. O O is installed and the ink member of the - row tape opening 9 is inserted into the small tape force separator 1-1. 0 0 is shown in the second position C (small tape force sensor 1 - unloading position haze), and the third position is J" Abe I! tape force set I in the embodiment of FIG. -2 0
0 is attached, -Kari's tape loading part moon is marked 7 {
1! The first step to enter IK into tape force Seno 1-200
Il? Showing the place on the 7th floor (shield 1 (Ii table case no 1 hair first tintai ψ'l ij7i゜),
FIG. 4 shows the pair of tape loading members in the loading position EL.

Of the pair of loading members, the table {''1, feeding side port-
The mounting members are attached to the guides 1 to iM[5 and the bottom side bottles (
A ball base 20;i, which is provided so as to be movable along a supply side guide iM'5, and a loading ball 20c protruding in ten directions from this ball base 20++ are fitted. ing.

The take-up side guide groove 18, which is paired with the supply side guide 5, is a guide rail plate provided on the top f of the chassis 4.
It is shaped like Tape 0 (tape winding side loading member 10 which is a pair with the feeding side loading member) is made by fitting the bottom ihI side bottle (not shown) into the winding side guy 1-1^I+18 and moving it along the guide line 8. A pole base 2J.a is provided to be movable, and a loading bolt 21C protrudes from the pole base 21.A in the L direction.

Guide Rl! ! 5 and J8 are marked {f! From the loading completion position E, the mark ! {1! Loading ports 20c and 2 into the tape cassette 200 1. I + Q where c has 1 thorn person
The path passes through the tape cassette unloading position fflF (see Figure 3) and extends from the small tape cassette 1 where the loading poles 20a and 21G fit into the small tape cassette 100 to the unloading position eC (see Figure 2). It has been extended.

By rotating the maximum inclination direction of the drum 3 to the left by a required angle, the loading of the winding side guide 18 is completed.
v! E is 0 (loading of the supply side guide is complete)
Since there is more shift 1-shield on the back of 1-ra l13 compared to 1-ra 13, it is possible to effectively utilize the same area that was conventionally used as desoto space, and the loading member on the winding side can also be used as a driver when loading is completed. lx
Since the pinch roller 10 is located at the back of the drum 3, there is more space on the right side of the drum 3, making it easier to secure a space for the pinch roller 10. In addition, as shown in FIG.
II[l x is specified for compatibility, but there is some leeway in increasing this distance. Furthermore, since there is no need to forcefully route the tape 2 by providing an additional guide pole or the like, tape tension does not increase.

The means for driving the pair of loading members includes a link 36 whose end is connected to the supply side ball base 20c, an arm 134 whose one end is connected to the other end of this link, and a shaft fixed to the other end of this arm 34. Gya 32 and Gya 32
a gear 33 that meshes with the gear 33, an arm 38 whose one end is fixed to the shaft of the gear 33, and a link 4 whose one end is connected to the other end of the arm 38 and whose other end is connected to the winding side pole base 21a.
It consists of o. The arm 34 and link 36 and the arm 138 and link 40 each constitute a link mechanism.

The gear 32 has a gear portion 32a with a large pitch radius and a pitch 1'. It has a gear portion 3 2 b with a small diameter. The gear 33 also has a gear portion 33a with a large pitch radius and a gear portion 33b with a small pitch radius. The reason for this is as follows. That is, from the small force set unloading position C of the supply side guide groove 5! ψ type force set unloading position Distance to both F is ml. The distance from the same position F to the loading completion position E is n1, the distance from the small force set unloading position C of the winding side guide groove 8 to the standard tape cassette unloading position F is 1ilm2, and loading is completed from the same position F. When the distance to position E is n2, m i :> m 2 n 1 > n 2 . Therefore, if the pitch ratio of the gears 32 and 33 is kept constant so that the pair of loading members are moved from the small force setting 1 to the unloading position [C to the standard force setting 131 and the unloading position F at the same timing,
Ball bases 20a and 2 are at loading completion position E.
The timing at which 1a arrives is different, and the ball base 20
a arrives first. Completion of loading requires waiting for arrival at the pole base 21a [E], resulting in a longer loading time. Therefore, during loading, the positions of the ball bases 20a and 20c on the supply side and take-up side are different, making it difficult to control the drive of the pair of tape loading members.

To solve this problem, gears 32 and 33, gear parts 32a and 32b with different pitch radii, respectively, are used.
and 33a and 33b.

That is, when the loading balls 20c and 21c are at the position where they are inserted into the small tape cassette 100, that is, the small tape force set unloading position C as shown in FIG. The gear 14 gear 33 is engaged with a gear 33a having a large pitch radius. Thereafter, the gear 32 rotates in the chronological direction, thereby the gear 33 rotates in the counter-clockwise direction, the ball base 20a moves in the supply side guide groove 5, and the pole base 21a moves in the winding side guide groove 8. However, when the pitch radius of the gear part 32a is set to ``m'' (as shown in Figure 3, the loading poles 20c and 2).c simultaneously arrives at the standard tape force set unloading position. can.

At this time, the gear 32 switches from the gear portion 32d with a small pitch radius to the gear portion 32a with a large pitch radius, and the gear 33 switches to the gear portion 32a with a large pitch radius. The gear portion 33a having a large diameter is switched to the gear portion 33b having a small pitch radius.

Thereafter, the gear 32 rotates clockwise, which causes the gear 33 to rotate counterclockwise, and the pole base 20a moves along the supply side guide shaft 5, and the pole base 21. a
However, by setting the pitch radius of the gear portion 32b to n, the pole bases 20a and 21a can reach the loading completion position at the same time, as shown in FIG. Therefore, since the loading member on the take-up side does not reach the loading completion position behind the loading member on the supply side, the loading time can be shortened. In addition, since the positions of the ball bases 20a and 21a on the supply side and take-up side can be made the same during loading operation, tension control 1 to roll of the drawn tape (i.e., timing control 1 and roll of the reel brake) can be easily controlled. This can prevent tape sagging and tape damage.

As shown in FIG. 5, compression springs 46 and 48 are provided between the gear 32 and the arm 34 and between the gear 33 and the arm 38 of the loading member driving means, respectively. Base 20a and 2
After 1a reaches the loading completion position E, gears 32 and 33 further rotate, springs 46 and 48 work, and ball base 2
0a and 21a are crimped to the catchers 81 and 82, but since the ball bases 20a and 21a arrive at the loading completion position E at the same time, the amount of extension of the springs 46 and 48 on the supply side and the take-up side is the same. (The supply side spring 46 does not become larger), and the installation n1 of the crimping springs 46 and 48 becomes easier.

In the above embodiment, variable speed gears are used as the gears 32 and 33, but the present invention is not limited to this, and other gears with different gear ratios may be interposed in the driving force transmission system of the loading member driving means. , these may be switched and used.

In addition, in Example 2, ml>m2, but m 1
．． = m2, and in that case, the pitch and the gear ratio may be set to match this.

FIG. 6 shows a mechanism for driving the gear 33.

The rotation of a pulley 62 fixed to a motor 61 is transmitted to a pulley 64 via a belt 63. Bouli 64
Since the worm gear 65 is coaxially fixed to the , the rotation of the worm gear 65, worm gear 65,
It is transmitted to gears 6, 7, 6, and 8.

A gear 70 is coaxially fixed to the gear 68, and its rotation is transmitted to the gear 69 via the gear 70. Gya 69
Since a force l1 plate 7 having a cam 7 a coaxially fixed thereto is fixed, the cam plate 71 rotates in conjunction with the rotation of the gear 69.

Since the pin 72 of the lever 74 is fitted into the force tz7a, the lever 74 rotates about the pin 73 in conjunction with the rotation of the cam 71a. To lever 74 [f pin 75
A lever 76 is rotatably supported via the levers 74 and 76, and a spring 77 is provided between the levers 74 and 76.

Gears 74a and 768 are formed at the tips of the levers 74 and 76, respectively, and mesh with the gear 33. Therefore. By the rotation of the levers 74 and 76, the gear 33 is moved, and furthermore, a small diameter gear 33a and a large diameter gear 3, which are formed coaxially with the gear 33, are rotated.
3b rotate, respectively, and the operations described above are performed.

Note that the spring 77 is the same as the spring 46 in FIG.
．． 48.

〔Effect of the invention〕

According to the magnetic tape recording/reproducing apparatus of the present invention, the guide groove on the winding side is set to 0 (longer than the guide groove on the feeding side), and the tape loading member on the winding side is positioned at the completion position 111.
Since 1. is in the direction of the ram's end, it is easier to maintain a space to prevent the pinch roller from touching the tape without enlarging the mechanism. Therefore, the areas on the tape that cannot be recorded or played back do not increase. Also, there is no need to add balls or increase tape tension.

Furthermore, the moving claw ratio of the tape loading section Hayashi on the supply side and the winding side is 1fζl If'? ．． The differences between the first position and the second position, and between the first position and the loading completion {fl i are made such that the reduction ratio is varied by a changing means provided in the table first position and the loading operation means. Therefore, the loading members on the tape feeding side and the winding side can reach the loading completion point at the same time, reducing the loading time and reducing the tension of the crimping springs on the feeding side and winding side. The amount of tension can be made equal, and therefore the crimping spring can be easily constructed.Furthermore, it is easy to roll the tape tension controller 1 during the loading operation, and the possibility of tape sagging or damage to the tape can be reduced.

4. i of the drawing,! Figure 1 shows the configuration of an embodiment of a magnetic tape recording/reproducing apparatus according to the present invention, in which the tape loading member and its driving means are shown when the magnetic tape has been pulled out to the fully loaded position. A plan view with removed
Figure 2 shows that the small tape force set I-1 is installed, and the tape loading member in the - row is attached to the small tape force set 1-11 (
2nd place is a plan view showing the configuration of an embodiment of the present invention at t (small tape force set unloading position),
FIG. 3 shows one embodiment of the present invention in the first position lit (s semi-tape force set unloading position) where the standard tape cassette is loaded and the pair of tape loading members are inserted into the standard tape cassette. FIG. 4 is a plan view showing the configuration of an embodiment of the present invention in which a pair of tape loading members are at the loading completion position, and FIG. FIG. 4 is an explanatory diagram showing a spring provided between the arm and gear of the tape loading member driving means shown in FIG. FIG. 8 is an explanatory diagram showing the conventional device shown in FIG. 7 in which the drum is separated from the tape cassette in order to prevent the pinch roller from touching the passed tape. , Figure 9 is an explanatory diagram showing the conventional device shown in Figure 7 in which the guide pole has been moved significantly to the right in order to prevent the pinch roller from hitting the passed tape. FIG. 3 is an explanatory diagram showing a state in which a marking tape cassette is loaded when the guide ball is moved to the right as shown in FIG.

21 2... Magnetic tape, 3... Drum, 4... Chassis, 5... Tape supply side guide groove, 9... Capstan, 10... Vinci roller, 11... Guide pole, 12...Guide rail plate, 18 Tape winding side guide groove, 20a, 21a-pole base, 20c. 21
c... Loading ball, 32, 33... Gear,
32a, 33a...Pitch radius small gear part, 32b, 3
3b...Large pitch radius gear part, 34, 38...Arm, 36, 40...Link, 100...Small tape cassette, 200...Standard tape force set 1., A...
・Maximum inclination angle, C... Small tape force set unloading position (second position), D... Maximum inclination direction, E.
... Loading Z end position, F ... Standard tape force set 1, unloading position (first position), ■] ... Vertical axis.

Claims (1)

[Claims] A first tape cassette and a second tape cassette smaller than the first tape cassette are selectively installed, and a supply-side guide groove and a take-up-side guide groove guide the movement of a pair of tape loading members, respectively. are formed on a first side and a second side of the drum, respectively, and the two guide grooves are extended to a position where the second tape cassette, which is smaller than the first tape cassette, is installed, and the first tape cassette is When the tape cassette is installed, the pair of tape loading members are moved by the loading member driving means to a first position where they fit into the first tape cassette, and when the second tape cassette is installed, the pair of tape loading members are moved. After the loading member driving means moves the pair of tape loading members to the second position where they are inserted into the second tape cassette, and the pair of tape loading members are inserted into the first or second tape cassette, the pair of tape loading members are moved to the second position where they are inserted into the second tape cassette. In the magnetic recording/reproducing device, the loading member driving means moves the tape along the guide groove to a loading completion position, and winds the tape in the first or second tape cassette around the outer periphery of the drum to perform magnetic recording or reproduction. , between the first position and the loading completion position, the length of the winding-side guide groove is made longer than the supply-side guide groove, and the loading member driving means moves between the first position and the loading completion position. 1. A magnetic tape recording and reproducing apparatus, comprising a speed change means for changing a reduction ratio between two positions and a reduction ratio between the first position and the loading completion position on a supply side and a winding side.