JP4026818B2 - Magnetic tape cartridge - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a magnetic tape cartridge, and more particularly to a magnetic tape cartridge capable of facilitating automation of an assembly operation of a door and a tension coil spring to a cartridge case.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as an external recording medium for data backup such as a computer, there is a magnetic tape cartridge configured by housing a single reel wound with a magnetic tape as a recording medium in a case (see, for example, Patent Document 1). ).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-265560 (FIG. 2)
[0004]
There are various types of magnetic tape cartridges of this type. In recent years, in order to reduce the operating space of the tape pull-out mechanism in the drive device for the purpose of reducing the size of the drive device, A magnetic tape cartridge has been developed in which a magnetic tape outlet is formed at a corner, and the magnetic tape outlet is opened and closed by a curved door.
[0005]
In such a magnetic tape cartridge, in order to open and close the door, the door is fitted into a guide groove formed on the inner surface of the cartridge case, and the door is provided on the inner surface of the door (the surface facing the inner side of the cartridge case). The door is always biased in the closing direction by hanging a tension coil spring between the side spring hook and the case side spring hook provided on the inner surface of the cartridge case, and the outer surface of the door (on the outside of the cartridge case). A structure in which the door is opened by pushing the operating protrusion formed on the facing surface) by an operating arm attached to the loading mechanism of the drive device is conceivable.
[0006]
As a method of automating the assembly operation of the door and the tension coil spring to the cartridge case in the manufacturing process of the magnetic tape cartridge having the above-described structure, first, the door is gripped by the robot hand and set in the guide groove, and then An assembly method is conceivable in which the tension coil spring is gripped by a robot hand, one end thereof is attached to the door-side spring hook and the other end is attached to the case-side spring hook. When assembling the tension coil spring, one end thereof may be attached to the case-side spring hanging portion, and the other end may be attached to the door-side spring hanging portion.
[0007]
[Problems to be solved by the invention]
However, in the above assembling method, if the door set in the guide groove swings or tilts to the left or right, the position of the door side spring hooking portion with respect to the cartridge case shifts. There was a problem that the work of attaching to the spring hook and the case side spring hook became difficult. In addition, if the gap between the door and the case side spring hook is narrow, the robot coil hand grips the tension coil spring when attaching both ends of the tension coil spring to the door side spring hook and the case side spring hook. There is a problem that it is difficult to insert the robot hand between the door and the case side spring hook. That is, the above-described assembling method has a problem that it is difficult to automate the assembling work of the door to the cartridge case and the tension coil spring.
[0008]
SUMMARY OF THE INVENTION An object of the present invention is to provide a magnetic tape cartridge capable of facilitating automation of assembling work of a door and a tension coil spring to a cartridge case.
[0009]
[Means for Solving the Problems]
The magnetic tape cartridge of the present invention includes a cartridge case composed of an upper half and a lower half, a magnetic tape outlet formed at a corner of a side wall portion of the cartridge case, and a curved shape that opens and closes the magnetic tape outlet. Formed on the inner surface of the cartridge case, a guide groove for slidably guiding the door in its opening and closing direction, a door-side spring hook provided on the door, and an inner surface of the cartridge case A case-side spring-hanging portion, one end of which is attached to the door-side spring-hanging portion, the other end is attached to the case-side spring-hanging portion, and the tension coil spring constantly biases the door in the closing direction. A magnetic tape cartridge comprising: the tension coil spring temporarily assembled with the door-side spring hanging portion mounted on the door Characterized in that a placed ability spring base.
[0010]
According to the magnetic tape cartridge of the present invention, the tension coil spring temporarily assembled to the door-side spring hook portion can be supported by the spring mount provided on the door, so the tension coil spring is temporarily assembled to the slide door. In this state, the door and the tension coil spring can be assembled to the cartridge case.
[0011]
Moreover, it is preferable to form a groove for restricting the tension coil spring at a certain position in the spring stand. In this way, since the position of the tension coil spring is easily determined on the spring stand, when the door is moved in a state where the tension coil spring is temporarily assembled to the door-side spring hanging portion of the door, the tension coil spring is not moved. It can prevent falling from a spring stand. The groove shape includes a concave shape such as a V-shaped groove or a semicircular groove.
[0012]
The length of the spring mount is such that when the tension coil spring is placed, the other end of the tension coil spring is located outside the spring stand, that is, the other end of the tension coil spring. It is preferable to set the length so that the portion protrudes from the spring mount. In this way, when the other end of the tension coil spring is hooked on the case-side spring hook, the spring mount does not interfere with other parts, so that the door can be securely assembled to the cartridge case.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a magnetic tape cartridge according to the present invention will be described in detail with reference to the drawings as appropriate. In the present embodiment, it is assumed that the slide door and the tension coil spring are assembled to the lower half of the cartridge case.
[0014]
First, the configuration of the magnetic tape cartridge according to the present invention will be described with reference to FIG. 1, FIG. 2, FIG. 3, and FIG. In the drawings to be referred to, FIG. 1 is an exploded perspective view showing a configuration of a magnetic tape cartridge MC according to the present invention, and FIG. 2 is an inner surface of a lower half 1B included in the magnetic tape cartridge MC shown in FIG. It is a perspective view which expands and shows the principal part of 11. FIG. 3 is an enlarged perspective view showing the slide door 6 included in the magnetic tape cartridge MC shown in FIG. 1. FIG. 4 shows a door-side spring hook 63 provided on the slide door 6. It is a perspective view which expands and shows the state which attached the one end 7a of the tension coil spring 7. FIG.
[0015]
As shown in FIG. 1, a magnetic tape cartridge MC has a single reel 2 in which a magnetic tape MT as a recording medium is wound inside a cartridge case 1 that is divided into an upper half 1A and a lower half 1B. A lock plate 3 and a compression coil spring 4 for locking the rotation of the reel 2, a release pad 5 for releasing the locked state of the reel 2, a slide door 6 for opening and closing the magnetic tape outlet 1D, and a slide door 6 A tension coil spring 7 that is always urged in the closing direction, a leaf spring 8 that locks the leader pin L attached to the tip of the magnetic tape MT when the slide door 6 is closed, an erroneous erasure prevention claw 9, a cartridge memory 10, etc. Is assembled. Here, “upper half 1A, lower half 1B” refers to the upper half at the time of assembly as “upper half 1A”, and the lower half as “lower half 1B”. The “slide door 6” corresponds to a “door” in the claims.
[0016]
The magnetic tape outlet 1D is formed in a corner 1C formed obliquely by cutting out a part of the side wall portion of the cartridge case 1 so as to straddle the upper half 1A and the lower half 1B (see FIG. 1). One end 7a and the other end 7b of the tension coil spring 7 are formed in a ring shape (see FIG. 4).
[0017]
2, the lower end 6b (see FIG. 3) of the slide door 6 is fitted into the inner surface 11 of the lower half 1B, and the slide door 6 can be slid in the opening and closing direction when the slide door 6 is opened and closed. A curved shallow guide groove 12 that guides to the inner surface 11, a pin-like case-side spring hook 13 formed integrally with the inner surface 11, and a lower end of the leader pin L (see FIG. 1) locked to the leaf spring 8 (see FIG. 1). A leader pin holding recess 14 or the like is formed. Although not shown, the guide groove and the case side are located on the inner surface of the upper half 1A at positions corresponding to the guide groove 12, the case side spring hooking portion 13, and the leader pin holding recess 14 formed on the inner surface 11 of the lower half 1B. A spring hook and a leader pin holding recess are formed respectively.
[0018]
As shown in FIG. 3, the slide door 6 is formed in a horizontally long thin plate shape, and has a shape curved in the plate thickness direction. A plurality of sliding projections 60 are formed on the upper end 6a and the lower end 6b of the slide door 6 so as to be slidably fitted in the guide grooves 12 (see FIG. 2) formed in the upper half 1A and the lower half 1B. .
[0019]
On the outer surface (the surface facing the outside of the magnetic tape cartridge MC) 6c of the slide door 6, an operation protrusion 61 for projecting the slide door 6 is provided. When the magnetic tape cartridge MC is assembled, the operation projecting piece 61 faces the operation opening 1E (see FIG. 1) formed in the side wall portion of the upper half 1A. The sliding door 6 is opened by being pushed by an operating arm attached to the loading mechanism of the drive device.
[0020]
On the inner surface 6d of the slide door 6 (the surface facing the inner side of the magnetic tape cartridge MC), the front end 6e has a stopper that holds the lower end of the leader pin L (see FIG. 1) when the slide door 6 is closed. 62 is formed. The “front end portion” refers to an end portion that becomes the closing direction side when the slide door 6 is assembled to the lower half 1B.
[0021]
Further, the inner surface 6d of the slide door 6 is provided with a door-side spring hook 63 to which one end of the tension coil spring 7 is attached at the rear end 6f. The “rear end portion” refers to an end portion that is on the opening direction side when the slide door 6 is assembled to the lower half 1B.
[0022]
As shown in an enlarged view in FIG. 4, the door-side spring hanging portion 63 has a pin-like shape, and a sliding door is provided at a distal end 64 a of a base end portion 64 that extends perpendicularly from the inner surface 6 d in the thickness direction of the sliding door 6. 6 is formed to extend vertically toward the upper end 6a side. A spring mount 65 for supporting the coil 7 c of the tension coil spring 7 is formed integrally with the base end portion 64 at the tip end 64 a of the base end portion 64. Further, the outer diameter of the door-side spring hook 63 is set to be equal to the inner diameter of the one end 7a of the tension coil spring 7 in order to keep the posture of the tension coil spring 7 with the one end 7a attached to the door-side spring hook 63 constant. They are formed with substantially the same diameter. The shape of the door side spring hook 63 is not particularly limited as long as one end of the tension coil spring 7 is attached.
[0023]
On the upper surface of the spring mount 65, a groove 65a for restricting the tension coil spring 7 to a fixed position is formed. In the present embodiment, the groove 65a has a substantially V-shaped cross section. When the groove 65 a is formed on the upper surface of the spring mount 65 in this way, the position of the tension coil spring 7 is easily determined on the spring mount 65, so that the tension coil spring 7 is provided on the door-side spring hook 63 of the slide door 6. When the slide door 6 is moved in a temporarily assembled state, it is possible to prevent the tension coil spring 7 from falling from the spring mount 65. In addition, you may form the cross-sectional shape of the groove | channel 65a in substantially U shape or a concave shape.
[0024]
The length of the spring mount 65 is such that the other end portion 7b of the tension coil spring 7 is located outside the spring mount 65 when the tension coil spring 7 is placed on the upper surface thereof, that is, the tension coil spring. 7 is set to such a length that the other end portion 7 b of 7 protrudes from the spring mount 65. When the length of the spring mount 65 is set in this way, the spring mount 65 interferes with other parts when the other end 7b of the tension coil spring 7 is hooked on the case-side spring hook 63 of the lower half 1B. Therefore, the slide door 6 can be securely assembled to the lower half 1B.
[0025]
According to the magnetic tape cartridge MC configured as described above, the tension coil spring 7 hung on the door-side spring hanging portion 63 can be supported by the spring mount 65 provided on the door-side spring hanging portion 63. Therefore, the sliding door 6 and the tension coil spring 7 can be assembled to the lower half 1B in a state where the tension coil spring 7 is temporarily assembled to the slide door 6.
[0026]
Next, a method for assembling the magnetic tape cartridge MC configured as described above will be described with reference to FIGS. In the drawings to be referred to, FIG. 5 is a perspective view showing the component holding jig 20 in a state where the slide door 6 is held. FIG. 6 is a perspective view showing a state in which the slide door 6 held by the component holding jig 20 is gripped by the robot hand RH of the assembly apparatus. FIG. 7 is a perspective view showing a state in which the slide door 6 and the tension coil spring 7 are assembled to the lower half 1B.
[0027]
When assembling the magnetic tape cartridge MC, the upper half 1A, the lower half 1B, the reel 2, the lock plate 3, the compression coil spring 4, the release pad 5, the slide door 6, the tension coil spring 7, and the leaf spring 8 are placed on the transport pallet. The parts such as the erroneous erasure preventing claw 9 and the cartridge memory 10 are arranged, and in the process of assembling each part, each part is placed at a predetermined position of the lower half 1B by using an assembly device equipped with a robot hand. Is assembled.
[0028]
On the transport pallet, each component is held in a fixed posture by a component holding jig dedicated to each component so as to be easily gripped by the robot hand of the assembly apparatus. As shown in FIG. 5, the slide door 6 is held by a component holding jig 20. As shown in FIG. 5, the component holding jig 20 for the sliding door 6 is formed with a door holding groove 21 for holding the sliding door 6 in a fixed posture on the upper surface 20 a. The door holding groove 21 is held in a vertical standing posture with no left-right tilt or front-back tilt.
[0029]
One end 7a of the tension coil spring 7 is attached to the door side spring hook 63 of the slide door 6, and the coil 7c of the tension coil spring 7 is fixed in a certain posture, that is, the lower half 1B by the spring mount 65. It is hold | maintained with the attitude | position at the time of attaching to the case side spring hook part 13 provided in. That is, the tension coil spring 7 is temporarily assembled with the slide door 6 in a fixed posture.
[0030]
When the slide door 6 and the tension coil spring 7 held by the component holding jig 20 are assembled to the lower half 1B, first, as shown in FIG. 6, the assembly apparatus used in the assembly process of the slide door 6 is used. The robot hand RH provided grips the vicinity of the door side spring hook 63 of the rear end 6f of the slide door 6. The position where the robot hand RH1 holds the slide door 6 is not particularly limited.
[0031]
Subsequently, the robot hand RH holding the slide door 6 is vertically raised above the component holding jig 20 to lift the slide door 6 from the component holding jig 20. At this time, the tension coil spring 7 hung on the door-side spring hook 63 of the slide door 6 is supported by the spring mount 65 and is maintained in a constant posture.
[0032]
Next, after the robot hand RH is moved above the lower half 1B, the robot hand RH is vertically lowered toward the inner surface 11 of the lower half 1B, and one end of the robot hand RH is placed on the door side spring hook 63 of the slide door 6. The other end 7b of the tension coil spring 7 to which 7a is attached is attached to the case side spring hook 13 formed on the inner surface 11 of the lower half 1B.
[0033]
Next, the robot hand RH is moved in the opening direction of the slide door 6, and the tension coil spring 7 stretched between the case side spring hook 63 of the slide door 6 and the case side spring hook 13 of the lower half 1B is stretched. The sliding projection 60 formed on the lower end 6b of the slide door 6 is fitted into the guide groove 12 formed on the inner surface 11 of the lower half 1B. At this time, the slide door 6 is fitted into the closed position of the guide groove 12 (see FIG. 7).
[0034]
And after raising the robot hand RH which released the slide door 6 above the lower half 1B, it returns to a predetermined position, and the assembly | attachment operation | work of the slide door 6 and the tension coil spring 7 to the lower half 1B is complete | finished.
[0035]
As described above, after the other end 7b of the tension coil spring 7 temporarily assembled to the slide door 6 is attached to the case-side spring hook 13 of the lower half 1B, the door-side spring hook 63 and the case-side spring hook 13 are attached. The sliding door 6 is fitted into the guide groove 12 of the lower half 1B while extending the tension coil spring 7 stretched over, so that the sliding door 6 and the tension coil spring 7 are brought into contact with the inner surface 11 of the lower half 1B in one operation. Can be assembled.
[0036]
As a result, the sliding door is gripped by the robot hand and set in the guide groove, and then the tension coil spring is gripped by the robot hand, one end of which is attached to the door side spring hook, and the other end is attached to the case side spring hook. When the sliding door set in the guide groove wobbles or tilts to the left or right, the position of the door-side spring hook relative to the cartridge case shifts. Since it is not necessary to consider the problem of the gap of the hook portion, it is possible to facilitate the assembly operation of the door and the tension coil spring to the cartridge case.
[0037]
Although one embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and various modifications are possible as long as it is based on the technical idea of the present invention.
[0038]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a magnetic tape cartridge capable of facilitating the automation of the assembly operation of the door to the cartridge case and the tension coil spring.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a configuration of a magnetic tape cartridge MC according to the present invention.
2 is an enlarged perspective view showing a main part of an inner surface 11 of a lower half 1B included in the magnetic tape cartridge MC shown in FIG.
3 is an enlarged perspective view showing a slide door 6 included in the magnetic tape cartridge MC shown in FIG. 1. FIG.
4 is an enlarged perspective view showing a state in which one end 7a of a tension coil spring 7 is attached to a door-side spring hook 63 provided on the slide door 6. FIG.
FIG. 5 is a perspective view showing the component holding jig 20 in a state where the slide door 6 is held.
6 is a perspective view showing a state in which the slide door 6 held by the component holding jig 20 is gripped by the robot hand RH of the assembling apparatus. FIG.
7 is a perspective view showing a state in which the slide door 6 and the tension coil spring 7 are assembled to the lower half 1B. FIG.
[Explanation of symbols]
6 Sliding door (door)
63 Door side spring hook 64 Base end 64a Tip 65 Spring stand 7 Tension coil spring 7a One end 7b The other end 20 Component holding jig RH Robotic hand

Claims (1)

A cartridge case consisting of an upper half and a lower half;
A magnetic tape outlet formed at a corner of the side wall portion of the cartridge case;
A curved door that opens and closes the magnetic tape outlet;
A guide groove formed on the inner surface of the cartridge case and slidably guiding the door in its opening and closing direction;
A door-side spring hook provided on the door;
A case-side spring hook provided on the inner surface of the cartridge case;
One end thereof is attached to the door-side spring hook, the other end is attached to the case-side spring hook, and a magnetic tape comprising a tension coil spring that constantly biases the door in the closing direction. A cartridge,
The magnetic tape cartridge according to claim 1, wherein the door is provided with a spring mount on which the tension coil spring temporarily assembled to the door-side spring hook portion can be placed.

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