JP3239414B2 - Tape guide pin of tape cartridge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape guide pin for forming a tape running path in a tape cartridge.

[0002]

2. Description of the Related Art In a tape cartridge, as shown in FIG. 5, one end and the other end of a magnetic tape 101 are engaged with a tape supply hub (reel) 102 and a tape winding hub (reel) 103, respectively. The magnetic tape 1 is moved from the tape supply hub 102 to the tape winding hub 103 side.
Recording / reproducing is performed while winding 01, and after the recording / reproduction is completed, the magnetic tape 101 is rewound from the tape winding hub 103 to the tape supply hub 102 side.

[0003] Reference numerals 104, 104 denote tape guide pins constituting a tape running path of the magnetic tape 101. These tape guide pins 104, 104 are formed by rotary cutting metal round bars, as shown in FIG. And the guide pin main body 1 with which the tape back surface of the magnetic tape 101 contacts.
The upper and lower flange portions 1 and 5 are formed by cutting the upper and lower flange portions 106 and 107 where the upper and lower tape edge portions of the magnetic tape 101 contact.
At 06 and 107, the vertical movement of the magnetic tape 101 is regulated, and so-called off-track of the magnetic tape 101 is prevented. Reference numeral 108 denotes a tape cartridge base plate to which the tape guide pins 104 are attached.

[0004]

By the way, the above conventional art
Te Pugaidopin 104 as described above, by cutting the metal rod, a guide pin body portion 105, on the flange portion 106, 107 of the lower because they were integrally formed, described below such problems was there.

(1) Guide pin body 1 by cutting
In order to form the flange portions 05 and the upper and lower flange portions 106 and 107, it is necessary to select and use a material having good cutting workability and appropriate hardness.

(2) The magnetic tape 101 is not wound around the entire circumference of the tape guide pin 104, but as shown in FIGS. Since it is wound within the range of about 180 °, the flange portions 106 and 107 are also wound on the magnetic tape 101.
Can be formed according to the winding angle around the tape guide pin 104. However, when the flange portions 106 and 107 are formed by conventional rotary cutting, the flange portions 106 and 107 Since the tape guide is formed in a concentric circular shape, an unnecessary portion is generated as a tape guide, which hinders weight reduction and cost reduction.

The present invention has been made to solve the above-mentioned conventional problems.

[0008]

According to the present invention, there is provided a tape guide pin of a tape cartridge having a guide pin main body portion in contact with a tape back surface and a flange portion in contact with a tape edge portion. And a flange is attached to a guide pin body made of the straight pin.

[0009]

[Action] Using a straight pin for the guide pin body,
Since the tape guide pin is configured by assembling the flange with this, cutting work is not required, so that the material is not restricted for cutting work, and even if the material has poor cutting workability It can be used as a pin body.

Also, since the flange portion is assembled to the guide pin main body, the material of the guide pin main body and the flange portion is changed, and the flange portion is formed of a resin material. The weight can be reduced as compared with the conventional case in which the material is formed by shaving from the like.

Further, by forming the flange portion into a semicircular shape or a U-shape or the like and assembling the flange portion with the guide pin body portion, the tape is not formed over the entire circumference of the guide pin body portion as in the conventional case. The flange portion can be easily formed only at a portion required as a guide.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described by taking an example in which a tape guide pin is used for a tape cartridge called a data cartridge as an external recording device of a computer.

First, the outline of the structure of the tape cartridge will be described. FIG. 1 is an exploded perspective view of the tape cartridge 1.
A case 3 attached so as to cover an upper portion of the base plate 2; and a cover 6 for opening and closing the tape exposed portions 4, 5 provided on the front side of the base plate 2 and the case 3.

On the base plate 2, a tape supply hub (reel) 12 and a tape take-up hub (reel) 13 which lock one end and the other end of a magnetic tape 11 as a recording medium are rotatable. A tape running path is formed by a pair of tape guide pins 21 and 21 of the present invention mounted on the front end of the base plate 2 and mounted on the front side of the base plate 2. Is rotated by the tape running mechanism 14 described above, the magnetic tape 11 runs along the tape running path while passing through the tape exposed portions 4 and 5.

The tape running mechanism 14 is provided at first and second corner rollers 15 and 16 rotatably mounted at both ends on the rear side of the base plate 2 and at the center of the front side of the base plate 2. Drive roller 17 and a drive belt 18 suspended by the corner rollers 15 and 16 and the drive roller 17.
7 and with between the first corner roller 15 is pressure contact <br/> the outer peripheral surface of the magnetic tape 11 which is attached the tape supply hub 12 wound, a drive roller 17 and the second corner rollers 16 between are pressure against the outer circumferential surface of the magnetic tape 11 which is attached the tape winding hub 13 wound. When the drive roller 17 is rotated counterclockwise in FIG. 1, the tape supply hub 12 and the tape take-up hub 13 rotate clockwise via the drive belt 18 so that the magnetic tape 11 of the tape supply hub 12 is rotated. Is the tape winding hub 1
When the drive roller 17 is rotated clockwise in FIG. 1, the tape supply hub 12 and the tape winding hub 13 are rotated counterclockwise via the drive belt 18, and the magnetic tape is rotated. 11 is rewound from the tape winding hub 13 to the tape supply hub 12 side.

Next, the structure of the tape guide pin 21 of the present invention will be described.

As shown in FIG. 2, the tape guide pin 21 includes a guide pin body 22 using a metal straight pin, and a synthetic resin assembly attached to the straight pin guide pin body 22. And a pair of upper and lower flange portions 23 and 24.

The pair of upper and lower flange portions 23 and 24 is approximately 180 ° in accordance with the winding angle of the magnetic tape 21 around the guide pin body 22 (approximately 180 ° in the embodiment).
And a pair of upper and lower flange portions 23 and 24 are formed on the magnetic tape 11.
A pair of left and right connecting pieces 2 with an interval corresponding to the width of
5,26.

The flanges 23 and 24 are fitted around the outer periphery of the guide pin body 22, and the guide pin body 22 and the flanges 23 and 24 are adhered to each other with an adhesive or the like, so that the tape guide pins are provided. 21 are constituted.

Reference numeral 27 denotes a positioning projection formed on the lower surface of the lower flange 24.

The tape guide pin 21 of the present invention has the above-described structure. As shown in FIG. 3, the convex portion 28 at the lower end of the guide pin main body 22 is provided with a concave portion for pin fitting provided on the base plate 2. 41 and the lower flange 2
4 is fitted to a positioning recess 42 provided on the base plate 2 and adhered to the base plate 2 with an adhesive or the like in a positioned state, so that the tape guide pins 21 is erected on the base plate 2, within the range of the magnetic tape 1 1 of the winding angle of the guide pin body portion 22 (180 °), the magnetic tape 11 by the upper and lower flange portions 23 and 24
It is surely prevented from moving up and down .

FIG. 4 shows another embodiment of the tape guide pin 21 of the present invention.

The main difference between the tape guide pins of this embodiment and the above-mentioned embodiment is that a pair of upper and lower flange portions 23 and 2 are provided.
4 are connected to each other by using a substantially semicircular connecting piece 27 in a plane, so that the contact area between the semicircular connecting piece 27 and the guide pin body 22 can be increased, and the bonding effect between the two can be improved. It was made.

In the embodiment shown in the drawings, the case where the upper and lower flange portions 23 and 24 are integrally connected by a connecting piece is shown, but the flange portions 23 and 24 may be separate.

In the embodiment, the flange portion 2 is adjusted in accordance with the winding angle of the magnetic tape 11 around the tape guide pin 21.
Although the case where 3, 3 is formed in a semicircular shape is shown, the flange portions 23, 24 may be ring-shaped.

[0026]

As described above, in the tape guide pin of the present invention, a straight pin is used for the guide pin main body, and the flange is attached to the straight pin. There is.

(1) The guide pin body and the flange are
The tape guide pin can be formed of a material corresponding to each function, thereby improving the function as a tape guide pin.

(2) The flange portion can be easily formed in accordance with the winding angle of the magnetic tape around the guide pin main body, and the unnecessary portion of the tape guide is omitted to further reduce the weight of the tape guide. Cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a tape cartridge using a tape guide pin of the present invention.

FIG. 2 is an enlarged perspective view of a main part.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a perspective view of another embodiment of the tape guide pin.

FIG. 5 is a perspective view of a conventional example.

FIG. 6 is a sectional view taken along line BB of FIG. 5;

FIG. 7 is a plan view of the tape guide pins when the hub winding tape amount is small.

FIG. 8 is a plan view of the tape guide pins when the hub winding tape amount is large.

[Explanation of symbols]

21: tape guide pin, 22: guide pin body, 2
3, 24 ... Flange part.

Claims (1)

(57) [Claims] 1. A base plate, comprising : a base plate;
The tape cartridge flow consists of a case that covers the top
Tape guide that is located on the
Wherein the tape guide pin is integrally connected to a guide pin main body part with which the tape back surface comes into contact with a connecting piece, and the tape edge part comes into contact with the tape pin.
The range is provided with a flange, and the guide pin body is fitted to the base plate.
Use a straight pin having a that protrusions, and said off
The flange is a positioning projection that fits on the base plate.
It has a tape guide pin of a tape cartridge which is characterized by being configured by assembling the <br/> flange portion on the outer periphery of the straight pin made of the guide pin body section.