JPS62208453A - Tape loading mechanism - Google Patents

Abstract

PURPOSE:To prevent a magnetic tape from being damaged, by providing a pair of guide poles which are provided on a supply side and a winding side, spliced to the magnetic tape for forming a tape path in a half loading position, and controls an up-and-down motion caused by running of the magnetic tape. CONSTITUTION:The titled mechanism is constituted so that a magnetic tape 4 is extended and mounted on a half loading position C, the magnetic tape 4 is run at a high speed, and also, a control head 22 and the magnetic tape 4 are brought to sliding contact, when a VTR is in a rapid traverse/rewind mode. In a mechanism 1, when the magnetic tape 4 is in a half loading position C, a prescribed tape path is formed by an outline guide pole 18, a tension pole and drawing-out ball 21, a tape drawing-out pole 23, and a guide pole 19. The guide pole 18 is provided in the vicinity of a supply reel 11 and its position is selected, and it is provided vertically on a holder 24 which has been provided on a main chassis 2. Also, the up-and-down motion which caused by running of the magnetic tape 4 is controlled by flange parts 18a, 18b which have been provided on the upper part and the lower part of a splice position of the magnetic tape 4, and a smooth tape run is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a tape loading mechanism, and more particularly to a tape loading mechanism used in a helical scan type magnetic recording/reproducing device.

Conventional technology Generally speaking, a helical scan type magnetic recording/reproducing device (hereinafter referred to as V
In the VTR, it is necessary to attach the magnetic tape to the rotating drum over a predetermined range. Therefore, the VTR is equipped with a tape loading mechanism that pulls out the magnetic tape stored in the tape cassette so as to form a predetermined tape path. It is provided. Various configurations of tape loading mechanisms have been proposed, one of which is a so-called parallel loading mechanism (also called an M loading mechanism).

When the VTR is in a normal recording/reproducing state, the magnetic tape is pulled out by the tape loading mechanism and travels while being in contact with a predetermined area of the rotating drum. However, when the magnetic tape is fast forwarded and rewinded twice, if the magnetic tape and the rotating drum remain in contact with each other, the running load on the magnetic tape becomes large. Therefore, conventionally, when a VTR is in fast forward or rewind mode,
A tape path is formed at a position where the magnetic tape stored in a tape cassette is wrapped around a rotating drum at a reduced angle (hereinafter referred to as a half-loading position), and at this half-loading position, the magnetic tape is fast-forwarded and rewound one time. There were tape loading mechanisms that had a half-loading function.゛Problems to be Solved by the Invention In the conventional tape loading mechanism described above, in order to pull out the magnetic tape to the half-loading position, the magnetic tape is pulled out only by the tape pull-out pole on the take-up reel side. A tape path at the half-loading position was formed by a guide pole provided at the half-loading position. However, because the tape drawer pole and guide pole were not equipped with a means to control the vertical movement that occurs when the magnetic tape runs, the magnetic tape would move up and down during fast forwarding and rewinding, and the time code reading head would not be able to read the time. If the code cannot be read, or in extreme cases, the magnetic tape comes into contact with the reel flange of the tape current at the supply side guide pole of the tape cassette, resulting in damage to the magnetic tape. For this reason, it is possible to prevent the above damage by increasing the vertical accuracy of the guide pole in the tape cassette, but there is a limit to the vertical accuracy of the guide pole due to problems with the molding of the tape cullet, causing damage to the magnetic tape. There was a problem in that the vertical accuracy of the guide pole could not be achieved until this was reliably prevented.

Therefore, an object of the present invention is to provide a tape loading mechanism that solves the above-mentioned problems by having a configuration in which the magnetic tape is pulled out to a position where it comes into contact with a guide pole provided with means for regulating the vertical movement of the magnetic tape during half-loading. shall be.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a tape loading mechanism with a magnetic tape storage position in a tape cassette and a predetermined loading position on a rotating drum during fast forwarding and rewinding of a magnetic Arp. A pair of drawer poles form a tape path at the dark half-loading position, and a magnetic tape is attached to the magnetic tape, which is disposed on the supply side and take-up side and forms a tape path at the half-loading position. A pair of guide poles are provided to restrict vertical movement of the tape as it runs.

Embodiment FIGS. 1 and 2 show an embodiment of the tape rope ink mechanism according to the present invention. The tape loading mechanism 1 shown in the figure is provided on the main chassis 2 of the VTR.
A tape cassette transport mechanism (not shown) has the function of pulling out a magnetic tape 4 (both indicated by a dashed line in the figure) from a tape cassette 3 mounted at a predetermined position to a position where it attaches to a rotating drum 5 over a predetermined angle during recording and reproduction. It is. In addition, during fast forwarding and rewinding of the magnetic tape 4, the running load is large if the magnetic tape 4 remains attached to the rotating drum 5, so the magnetic tape 4 is attached to the rotating drum 5 at a predetermined angle. A position (arrow C in the figure) that is halfway between the position where the tape cassette 3 is brought into contact (the position indicated by arrow A in the figure; hereinafter referred to as the loading position) and the position in the tape cassette 3 before being pulled out (the position indicated by arrow B in the figure). The magnetic tape 4 is pulled out to a position shown by (hereinafter referred to as a half-loading position), and at this loading position, the magnetic tape 4 is fast-forwarded and rewound seven times. Furthermore, tape cassette 3 is V
Once installed at a predetermined position within the TR, the magnetic tape 4 is pulled out to a half-rope, ink position C by the tape loading mechanism 1.

Further, when reading tape position information such as a time code, it is brought into contact with the reading head. That is, the half-loading position C is the position where the instep forwarding and rewinding is performed, and is also the timing position before being loaded to the loading position. With this configuration, the distance between the loading position ff1A and the half-loading position C (temporal position) is shortened, and switching between the recording/reproducing mode and the fast forward/7 rewind mode can be performed in a short time. It can also read time codes, etc. Each configuration of the tape loading mechanism 1 will be explained below.

5a and 5b are loading bases with guide poles 7a and 7b and loading pole Ba on the upper part.

8b was planted. This O-ding base 6a, 6
b indicates guide rails 10a provided on both side edges of the sub-chassis 9 by a drive mechanism (not shown);

10b.

The sub-chassis 9 is provided above the main chassis 2 so as to be substantially parallel thereto. Further, the shape of the side edge portion of the sub-chassis 9 is formed in a shape corresponding to a predetermined movement trajectory along which the loading poles 8a and 8b move when pulling out the magnetic tape 4 to a predetermined loading position during recording and reproduction.

Therefore, the guide rails 10a, 10b provided on the side edges of the sub-chassis 9 are arranged at positions corresponding to the predetermined locus of movement of the loading poles 8a, 8b during loading. The loading poles 8a and 8b provided on the loading bases 5a and 5b function to pull out the magnetic tape 4 from the tape cassette 3 to a predetermined loading position when the VTR 71/1 enters the recording/reproducing mode. At this time, the tension arm 12 and impedance roller 13 are arranged on the supply reel 11 side, and the first and second drawer arms 15 are arranged on the take-up reel 14 side.
16. The pinch row 517'W is also displaced, and together with the guide poles 18 and 19 installed on the main chassis 2 and the capstan shaft 20, the magnetic tape 4 forms a predetermined tape path, and the rotating drum 5 performs magnetic recording and reproduction. .

Next, a mechanism for loading the magnetic tape 4 to the half-loading position, which is a feature of the present invention, will be explained. As is well known, when a VTR is in fast forward 7 rewind mode, if fast forward 7 rewind is performed with the magnetic tape 4 attached to the rotating drum 5, the running load becomes large, making it impossible to perform fast fast forward 7 rewind. do not have. Therefore, in the fast forward 7 rewind mode, the magnetic tape 4 is stretched at the half-loading position C so that the magnetic tape 4 can run at high speed and the control head 22 and the magnetic tape 4 are in sliding contact. In the mechanism 1 of the present invention, the magnetic tape 4 is at half-loading level V! 1c, the magnetic tape 4 is roughly guided by a guide pole 18, a tension pole/drawer pole 21,
A predetermined tape path is formed by the tape pull-out pole 23 and the guide pole 19.

The guide pole 18 is located near the supply reel 11 and is implanted in a holder 24 provided on the main chassis 2 . As shown in FIG. 2, this guide pole 18 is provided with flanges 18a and 18b at the upper and lower parts of the position where the magnetic tape 4 is attached. The vertical movement associated with the vehicle is restricted.

A tension pole/drawer pole 21 (hereinafter simply referred to as a tension pole) is installed at the tip of the tension arm 12. The tension arm 12 is rotatably supported by a support shaft 25 implanted in the main chassis 2, and has a pair of arm portions 12a and 12b extending in a predetermined direction. A coil spring 27 is stretched between the arm portion 12a and a bin 26 provided on the main chassis 2, of the pair of arm portions 12a and 12b.
Therefore, the tension arm 12 is always urged to rotate counterclockwise. However, the tension arm 12 is moved between the position ff1 (the position indicated by the arrow D1 in Ii21) before the magnetic tape 4 in the tape cassette 3 is pulled out by the locking mechanism 28 (described later) and the predetermined position (the arrow in the figure) where the tape tension is detected. The structure is such that it can be rotated between positions (not shown as D2). When the VTR is in the fast forward 7 rewind mode, the tension pole 12 is locked at the position indicated by arrow D3 in the figure by the locking mechanism 28, and in this state the magnetic tape 4 pulled out from the supply reel 11 is The guide pole 18 is connected to the guide pole 18.

Therefore, on the supply side, the magnetic tape 4 is
Since the vertical movement is restricted by the collar part isa, 18b,
Smooth tape running with extremely little vertical movement can be achieved.

Tape drawer pole 2 provided on the take-up reel 14 side
3 is implanted at the tip of the first drawer arm 15. The first drawer arm 15 is attached to a pivot shaft 29 rotatably provided on the main chassis 2, and a pinch roller arm 30 provided with a pinch roller 17 coaxially rotates on this pivot shaft 29. It can be installed freely. A gear portion 29a is formed on the outer periphery of the support shaft 29, and a gear 31
It meshes with a gear portion 32a formed on the outer periphery of the support shaft 32 of the second drawer arm 16 via. Therefore, the first and second drawer arms 15,16 are rotated in the same direction in conjunction with the gear 31. Also pinch roller arm 30
A pinch roller solenoid 34 is connected to via a link 33.

The first and second drawer arms 15,16 are driven by a slide plate 36b that constitutes a locking mechanism 28, which will be described later. That is, when the slide plate 36b is displaced in the direction of arrow Y2 in the figure, each arm 15, 16 is rotationally displaced clockwise, and the magnetic tape 4 forms a predetermined tape path during half loading, as indicated by arrows E+ and F+ in the figure. Displace to the position. Conversely, when the slide plate 36b is displaced in the direction of the arrow Y1 in the figure, each arm 15, 16 is biased by the coil spring 16a and rotated counterclockwise, so that the tape cassette shown by the arrows E2 and F2 in the figure 3
(the position before the magnetic tape 4 is pulled out). The pinch roller 30 is driven by a pinch roller solenoid 34, and is at the 1'' position shown by arrow G1 in the figure during half-loading, and at the position inside the tape cassette 3 shown by arrow G2 in the figure before loading. Moving.゛The magnetic tape 4 is used as the take-up reel 14 during half loading.
On the side, a tape pull-out pole 23, a control head 22, a guide pole 19, a pinch roller 17 and a main 1
1, the tape shaft 20 and the guide pole 35 are attached to form a tape path leading to the take-up reel 14. Of each structure to which the magnetic tape 4 is attached, the guide pole 1
9.35, collar portions 35a and 35b (second
As shown in the figure. Note that the flange of the guide pole 19 (not shown) is provided. Therefore, also on the take-up reel 14 side, the vertical movement accompanying the running of the magnetic tape 4 is caused by the guide pole 19.
．． 35, it is possible to realize tape running with extremely little vertical movement.

That is, when the magnetic tape 4 forms a tape path at the half-loading position, the magnetic tape 4 is connected to the supply reel 1.
On the 1 side, vertical movement during traveling is regulated by a guide pole 18, and on the take-up reel 14 side, vertical movement is regulated by guide poles 19.35. Also, the tension arm 12 and the first drawer arm 15° and the second drawer arm 16 are connected to the tension pole 21.
, the tape pull-out pole 23 is moved to a position where the magnetic tape 4 is brought into contact with the guide poles 18, 19, and 35. Therefore, the vertical movement of the magnetic tape 4 at J3 during intermediate feed 7 rewinding is reliably regulated on both the supply side and the winding side, and it is possible to prevent the magnetic tape 4 from extending 1 m.

Next, the operations of the tension arm 12 and the locking mechanism 28 in each mode will be described below.

As described above, the tensicon arm 12 is displaced between the position shown by the arrow D1 and the position shown by the arrow D2 in the figure while being regulated by the locking mechanism 28. This locking mechanism 28 is generally composed of slides 7-Lz 36a, 36b, a 7-tion arm guide lever 37, a loading pin 38, and the like.

The slide plates 36a and 36b are plate-shaped members that are slidably placed on top of each other, and are respectively indicated by the arrow Y+ in the figure.
, and is configured to be able to be displaced in the Y2 direction. This slide plate 368.36b has gear portions 36a-1, 36b-+, 36b-2 over a predetermined range on its negative side edge.
are formed, and nokia parts 36a-1 and 36b- are formed, respectively.
+ and 36b-2 are meshed with gears 39 to 41 to form a rack and binion. The gear 39 meshes with a gear portion 36b-+ of a slide plate 36b provided on the lower side, and is connected to a half-loading motor 44 via a gear 42, a belt 43, etc. (shown in FIG. 2). When the half-loading motor 44 rotates in the forward direction, the three gears are configured to rotate clockwise, and therefore the slide play h 36 b is displaced in the direction of arrow Y2 in the figure.

On the other hand, the gear 40 meshes with the gear portion 36b-2 of the slide plate 36b provided on the lower side, and also engages with the gear portion 36b-2 of the slide plate 36b provided below.
It meshes with 1. Further, the gear 41 meshes with a gear portion 36a-+ of a slide plate 36a provided on the upper side. Therefore, due to the forward rotation of the half-loading motor 44, the upper slide plate 36a is moved by the arrow Y1 in the figure.
Displace in the direction. Furthermore, a projection 46 that engages with a pin 45 provided on the arm portion 12b of the tension arm 12 is formed at the left end of the upper slide plate 36a, and a second projection 46 is formed at the right end of the lower slide plate 36b. A projection 4 that engages with a bin 47 provided on the drawer arm 16
8 is formed.

The tension arm guide lever 37 is connected to the tension arm 1
It is rotatably attached to the support shaft 25 of No. 2, and has an extension portion 37a extending toward the rotating drum, and an engagement protrusion 37 extending leftward from this and engaging with the tension arm 12 at its tip.
The engagement portion 37b is formed by providing an engagement portion 37b. The leading end of the extending portion 37a connects to the loading bin 3 implanted in the upper loading ring 49a of a pair of upper and lower loading rings 49a and 49b which are rotated when the magnetic tape 4 is loaded to the loading position Δ.
It is engaged with 8. Further, as will be described later, the engaging protrusion 37t)-+ provided on the engaging portion 37b engages with the side of the tension arm 12 when the magnetic tape 4 is at the half-loading position C, and the tension by the coil spring 27 is applied to the engagement protrusion 37t)-+. The rotation of the arm 12 in the counterclockwise direction is restricted.

Tension arm 12 and locking mechanism 28 configured as above
1 and 3 to 3 show how the magnetic tape 4 operates when being pulled out to each loading position A, B, and C.
This will be explained below using FIG. 3 to 5 are enlarged views showing the vicinity of the tension arm 12 and the locking mechanism 28, and the dashed line 1'' in the figures indicates the movement of the loading bin 38 as the loading ring 49a rotates. It shows the trajectory. Also, in Fig. 1, the state when the tension arm 12 is at position D1 is shown in Fig. 3, the state when it is in position D3 is shown in Fig. 4, and the state when it is in position EID 2 is shown in Fig. 4. Each is an indication.

First, the state when the tension arm 12 is in position '11 DI will be explained. This state is a state immediately after the tape cassette 3 is installed in the VTR, and the magnetic tape 4 remains stored in the tape cassette 3. At this time, the slide plate 36a is displaced in the Y2 direction, and the slide plate 36b is displaced in the Y+ force direction. Therefore, the protrusion 4 provided on the slide plate 36a
6 is an arm portion 12b provided on the tension arm 12
The tension arm 12 is held at a predetermined position within the tape cassette 3 against the urging force of the coil spring 27.

Further, the tension arm guide lever 37 is engaged with a loading pin 38 provided on the loading ring 49a, and rotation in the counterclockwise direction about the support shaft 25 is restricted.

Next, the operation of each component when loading the magnetic tape 4 to the half-loading position C from the state shown in FIG. 3 will be explained with reference mainly to FIG. 4.

When loading the magnetic tape 4 to the half-loading position C, the half-loading motor 44 is first rotated in the forward direction, so that the slide plate 36a is displaced in the Y1 direction. With this displacement of the slide plate 36a, the protrusion 46 is also displaced in the Y1 direction, and therefore the tension arm 12 is biased by the coil spring 27 and begins to rotate counterclockwise. As a result, the magnetic tape 4 is pulled out from the tape force sets 1-3. That is, the magnetic tape 4 is pulled out from the tape cassette 3 by the tension pole 21 provided on the tension arm 12.

The rotation of the tension arm 12 is
is the engagement protrusion 37b of the tension arm guide lever 37.
It is stopped by engaging with +. The engagement position between the tension arm 12 and the engagement protrusion 3[gamma]b-+ is selected to be a position where the tension pole 21 positions the magnetic tape 4 at a predetermined half-loading position C. In other words, the tension arm 12 is connected to the engagement protrusion 37b-+
In the engaged state, the magnetic tape 4 is pulled out to a predetermined half-loading position C. As described above, the magnetic tape 4 is configured to be attached to the guide pole 18 at this time.

During half loading, the [1- loading rings 49a and 49b are not driven. Therefore, the loading bin 38 moves the tension arm guide lever 37 into the engagement protrusion 3.
7t)-+ is engaged with the tension arm 12 at the predetermined position. The tension arm 12 is biased to rotate by the coil spring 27, and therefore the tension arm guide lever 37 is also biased to rotate counterclockwise via the engagement protrusion 37t)-+. Shikaji loading bin 38 and tension arm guide lever 3
7, the tension arm 12 is attached to the magnetic tape 4.
is locked at a position to form a predetermined half-loading path. Moreover, the elastic force of the coil spring 27 is
The tension is selected to be appropriately strong so that the tension arm 12 will not rotate clockwise due to the tape tension when the magnetic tee 14 is fast-forwarded and rewound seven times.

In the state shown in FIG. 4, the tension arm 12 does not perform its original function, but functions as a pull-out arm for pulling out the magnetic tape 4 from the tape cassette 3 to form a predetermined half-loading path. ing. Note that when the magnetic tape 4 is in the read state or in the fast forward or rewind state, the tension arm 12 does not need to perform its original function, and therefore it is particularly inconvenient to use the tension arm 12 as a drawer arm. does not occur.

Next, the operation of each component when loading the magnetic tape 4 to the loading position from the state shown in FIG. 4 will be explained. When loading the magnetic tape 4 to the loading position A, the full loading motor 50 is driven, and the loading rings 49a, 49b begin to rotate in different directions, and the loading base 6a,
6b is the guide rail 10a, 10b (both shown in FIG. 1)
It starts moving toward a predetermined position on the side of the rotating drum 5. At this time, the upper loading ring 49a
rotates clockwise. Therefore, loading ring 49
The loading bin 38 provided at point a moves on a movement trajectory 1'' in the direction of arrow J in FIG.

As described above, the tension arm 12 and the tension arm guide lever 37 are both urged to rotate counterclockwise by the coil spring 27.

Therefore, by moving the loading bin 38 in the J direction, the tension arm 12 and the tension arm guide lever 3
7 rotates counterclockwise. This loading bin 38
As the tension arm guide lever 37 moves, the engagement between the loading bin 38 and the tension arm guide lever 37 is released, and eventually the loading bin 38 is separated from the tension arm guide lever 37 as shown in FIG. In this state, the rotation of the tension arm 12 is released, and the support shaft 25
It can be rotated freely around the center. Therefore, the tension arm 12 maintains the tape tension of the running magnetic tape 4! The main system I
! - Tension detection coil 52 provided on the back of the seat 2
(both shown in FIG. 2), and tape tension servo is performed. At this time, tension arm guide lever 3
7 is in contact with a stopper 53 provided on the main door 1 and the door 2, and is locked in a predetermined position.

In FIG. 5, the tension arm 12 is performing its original function of detecting the tension of the magnetic tape 4. In FIG. That is, the tension pole 21 provided on the tension arm 12 pulls out the magnetic tape 4 from the storage position B in the chip cassette 3 to the half loading position C (71).
vA functions as a drawer pole, and the magnetic tape 4 is connected to O-
When it is at the loading position Δ, it functions as a tension pole. Therefore, in the mechanism 1 of the present invention, the number of parts can be reduced by performing the functions of a tension pole and a pull-out pole with a single tension pole 21. Furthermore, since the configuration is simple, the cost of the loading 1a horizontally can be reduced.

It is obvious that by each component performing an operation opposite to that described above, the tape loading mechanism 1 returns from the loading state shown in FIG. 5 to the state before loading shown in FIG. 3. It is about.

Effects of the Invention As described above, according to the tape loading mechanism of the present invention, the tape loading mechanism is configured to move the magnetic tape between the storage position in the tape cassette and the predetermined loading position on the rotating drum when the magnetic tape is fast forwarded and rewinded. A pair of drawer poles form a tape path at the half-loading position between the two, and a magnetic tape is attached to the supply side and the winding side and forms a tape path at the half-loading position. By providing a pair of guide poles to restrict the accompanying vertical movement, when the magnetic tape is fast-forwarded and rewound seven times, the vertical movement of the magnetic tape is restricted by the guide poles on both the supply side and the winding side, so that The vertical movement is extremely small, and the magnetic tape does not come into sliding contact with the tape cassette reel flange, which reliably prevents damage to the magnetic tape, ensures reliable reading of the time code track, and prevents the drawer pole on the supply side from sliding. It can also be configured to serve as a tension pole, and has the advantage of simplifying the configuration of the tape loading mechanism and reducing costs.

[Brief explanation of drawings]

Fig. 1 is a plan view of an embodiment of the tape loading mechanism according to the present invention, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, and Figs. FIG. 4 is a configuration diagram for sequentially explaining the operation of the tension arm and the locking mechanism when the device is loaded from the stored position to the loading position. 1... Tape loading mechanism, 2... Main chassis, 3... Tape cassette, 4... Magnetic tape,
5... Rotating drum, 11... Supply reel, 12...
・Tension arm, 12a, 12b...arm part,
14... Take-up reel, 15... First drawer arm, 16... Second drawer arm, 18.19...
Guide pole, 18a, 18b...flange, 21...
Tension pole, 22...Control head, 2
3... Tape drawer pole, 28... Locking mechanism, 3
5... Guide pole, 35a, 35b-... Flange, 3
6a, 36b...slide plate, 37...tension arm guide lever, 37b-1...engaging protrusion,
38...Loading bin, 39-41...Gear,
49a, 49b...Loading ring. Patent Applicant: Japan Victor Co., Ltd. Figure 4 Procedures I [Written Patent Office Director General Uga Michibu 1, Indication of the Case 1986 Patent Application No. 50574 2, Name of the Invention Tape Loading) 3, Amendments Relationship with the case of a person who does 5-7-6 Kojimachi, Chiyoda-ku, Miyako
, Specification subject to amendment n: claims, detailed description of the invention. 7. Contents of amendment (1) In the specification, the claims section is amended as shown in the attached sheet. ■ Insert "pull out" between "in position" and "1 tape" written in the first line of page 5. ■ Claims characterized by ``pull out'' at 11'u of ``at the 1g position'' and ``1-bupa'' described on page 23, line 10 of the same, ``(1) Fast forwarding of magnetic tape 7 rewinding'' A pair of tape drawer poles are disposed on the supply side and the winding side, respectively, for forming a half-eave path for the magnetic tape at a half-loading position between the storing position in the tape cassette and the predetermined loading position on the rotating drum. A tape loading mechanism comprising a pair of guide poles attached to the magnetic tape forming a tape path at a half-loading position and regulating vertical movement of the magnetic tape as it travels.

Claims (2)

[Claims] (1) A pair of tape drawer poles that form a tape path at a half-loading position between the storage position in the tape cassette and the predetermined loading position of the rotating drum when the magnetic tape is fast-forwarded/rewinded; A pair of guide poles are provided on the magnetic tape side and the winding side, and are attached to the magnetic tape forming a tape path at the half-loading position to regulate the vertical movement of the magnetic tape as it runs. Features a tape loading mechanism. (2) The tape loading mechanism according to claim 1, wherein of the pair of tape pull-out poles, the tape pull-out pole on the supply side also serves as a tension pole.