JPH10199197A - Reel locking mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce work for separating metallic and resin products from each other by regulating the rotation of a tape reel by a locking section provided to be freely swung against the tape reel and engaged therewith, spirally bending a resin material so as to provide a swing characteristic to the locking section and fixing one end part of an elastic displacing section so as to rotate it. SOLUTION: An engaging lug 20 engaged with the engaging groove parts 6a and 7a of tape reels 6 and 7 are provided in the tip part of a engaging piece section 16. In the outer peripheral part of a body section 15, an operating piece section 17 is formed to be integrally protruded with the butt-contact projecting part 10b of the contact piece part 10a of a lid 10. The operating piece section 17 is operated to be swung by the butt-contact projecting part 10b of the lid 10 and then the body section 15 is swing. An elastic displacing section 13 is made of a resin material such as engineering plastic having high rigidity. The elastic displacing part 13 includes a center part 21 fixed by a rotation regulation support shaft 14 and an elastic displacing part 22 bent to bias an elastic force.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reel lock mechanism used for restricting the rotation of a tape reel provided with a magnetic tape wound around and rotatably provided in a tape cartridge.

[0002]

2. Description of the Related Art As shown in FIG. 7, a conventional tape cartridge 101 generally has a cartridge body 1 composed of a combination of an upper half and a lower half 104 (not shown).
A pair of tape reels 106 and 107 around which the magnetic tape 102 is wound are rotatably accommodated in the tape 05. The tape cartridge 101 is provided with a reel lock mechanism 111 for restricting the rotation of each of the tape reels 106 and 107 so that the tape reels 106 and 107 do not rotate when not in use.

As shown in FIG. 7, the reel lock mechanism 111 includes engagement grooves 106a, 1a recessed in the outer peripheral portion of one of the flange plates constituting the tape reels 106, 107.
07a, a torsion spring 113 made of metal for imparting a swinging behavior to the reel lock member 112 by an elastic force, and a swing support shaft 114 for swingably supporting the reel lock member 112. And a lid lock member 115 that operates in conjunction with the opening and closing operation of a lid (not shown) that is provided so as to be openable and closable with respect to a tape drawing opening formed in the cartridge body 105.

As shown in FIG. 8, a reel lock member 112 includes a support portion 116 having a shaft hole 116a through which a swing support shaft 114 is inserted, and a tape reel 106, 107 formed integrally with the support portion 116. Engagement grooves 106a, 107
a engaging piece 117 having an engaging claw 117a that engages with
And an operation piece 118 formed integrally with the support 116 and operated by the lid. Further, a locking rib 119 for locking one end of the torsion spring 113 is integrally protruded from the engaging piece 117 of the reel lock member 112.

The torsion spring 113 includes a swing support shaft 114.
And one end of the reel lock member 11
It is locked by two locking ribs 119. Swing support shaft 114
Is erected on the lower half 104 and is swingably inserted into a shaft hole 116 a of the support portion 116 of the reel lock member 112.

As shown in FIG. 7, the lid lock member 115 is provided on the lower half 104 via a support shaft 120 so as to be swingable, and a locking rib to which one end of the torsion spring 113 is locked. 121 is protruded.

In the reel lock mechanism 111 configured as described above, the engaging claws 117a of the reel lock member 112 are engaged with the engaging grooves 106a, 107a of the tape reels 106, 107 by the elastic force of the torsion spring 113. Thus, the rotation of the tape reels 106 and 107 is restricted. Further, the reel lock mechanism 111 allows the reel lock member 112 to move the swing support shaft 114 through the lid lock member 115 with the lid being opened when the tape cartridge 101 is loaded in the recording / reproducing apparatus. Swung as the center. In the reel lock mechanism 111, the engagement between the engagement grooves 116a and 107a of the tape reels 106 and 107 and the engagement claws 117a of the reel lock member 112 is released by swinging the reel lock member 112. And the tape reels 106 and 107 can be rotated.

[0008]

As described above, in the reel lock mechanism 111, in the assembling process, the metal torsion spring 113 is inserted through the swing support shaft 114 to which the reel lock member 112 is attached. One end of the torsion spring 113 is locked by the locking rib 119 of the reel lock member 112, and the other end is locked by the locking rib 121 of the lid lock member 115.

Therefore, the reel lock mechanism 111
However, since the torsion spring 113 is relatively small and has a direction in which the torsion spring 113 is urged, there is a problem that workability of assembling the torsion spring 113 is low and difficult.

According to the reel lock mechanism 111, a measure to introduce an assembling facility for automating the assembling work of the torsion spring 113 can be considered. There is.

Further, since the reel lock mechanism 111 has a large number of parts, it has a problem that the structure is complicated and the assembling work is complicated.

Further, the reel lock mechanism 111
Since it has the metal torsion coil spring 113 and the resin-made reel lock member 112, when the discarded tape cartridge 101 is discarded, the metal component and the resin component are separated and discarded. Is complicated. That is, the reel lock mechanism 1
11 is required to form functional components such as the torsion spring 113 using only a resin material.

Therefore, the present invention improves the workability of the assembling work, and reduces the sorting work of separating metal parts and resin parts when discarding a damaged tape cartridge. It is an object of the present invention to provide a reel lock mechanism that makes it easy to perform the operation.

[0014]

In order to achieve the above-mentioned object, a reel lock mechanism according to the present invention is formed of a resin material, is provided to be swingable with respect to the tape reel, and engages with the tape reel. A lock portion that regulates rotation of the tape reel, an elastic displacement portion that is formed of a resin material and imparts a swinging behavior to the lock portion by an elastic force generated by being spirally bent, and a swing provided in the lock portion An operation unit operated by the operation means, and a rotation restricting spindle for fixing one end of the elastic displacement unit and restricting rotation of the elastic displacement unit are provided.

Further, the reel lock mechanism according to the present invention comprises:
A reel lock member in which a lock portion and an operation portion are integrally formed with the elastic displacement portion; A position restricting unit for restricting the position.

In the reel lock mechanism constructed as described above, the elastic force is applied to the lock member by the elastic displacement portion formed of the resin material. Therefore, when the damaged tape cartridge is discarded, the lock member is made of metal. The work of separating components from resin components is reduced.

Further, since the lock portion and the operation portion are integrally formed with the elastic displacement portion, the reel lock member has a simplified overall configuration and a reduced number of components.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a specific embodiment of the present invention will be described with reference to the accompanying drawings. As shown in FIG. 1, this tape cartridge 1 is a supply-side tape reel that winds a magnetic tape 2 around a peripheral surface inside a cartridge main body 5 configured by combining an upper half and a lower half 4 (not shown). 6 and a take-up side tape reel 7 are rotatably housed. The supply-side tape reel 6 and the take-up-side tape reel 7 have a reel hub 8 around which the magnetic tape 2 is wound, and a pair of upper flange plates 9a and lower flange plates 9b provided at both ends of the reel hub 8. ing.

The lower half 4 has an open front side surface, and a lid 10 for protecting the magnetic tape 2 drawn out from the front side surface is openably and closably assembled. The magnetic tape 2 fed from the supply-side tape reel 6 is supplied to the tape cartridge 1 by a pair of tape guides 4a disposed in front of the lower half 4.
Is wound along the front side of the tape reel 7 and wound on the winding tape reel 7 side. The magnetic tape 2 running on the front side surface of the tape cartridge 1 is protected by a lid 10 that is closed when not in use.

The supply-side tape reel 6 and the take-up-side tape reel 7 are provided with an engagement groove 6a formed by recessing an outer peripheral portion of a lower flange plate constituting the tape reels 6, 7 with a reel lock mechanism 11. By being engaged with 7a,
The rotation in the tape feeding direction and the tape winding direction is regulated respectively. As shown in FIG. 1, the lid 10 is formed with a contact piece 10a for swinging the reel lock mechanism 11, and the contact piece 10a is formed with a projecting projection 10b. Have been.

The reel lock mechanism 1 according to the embodiment
Reference numeral 1 denotes a lock member 12 for restricting the rotation of the tape reels 6 and 7, an elastic displacement member 13 for imparting a swinging behavior to the lock member 12, and a rotation restricting support for restricting the elastic displacement member 13 from rotating. And a shaft 14.

The lock member 12 is formed of a resin material such as engineering plastic having relatively high rigidity such as polyacetal (POM). As shown in FIG. 3, the lock member 12 includes a main body 15 that is swingably provided on a rotation regulating support shaft 14 through an elastic displacement member 13.
And a substantially V-shaped engaging piece 16 engaging with the engaging grooves 6a, 7a of the lower flange plate 9b constituting the tape reels 6, 7.
And a substantially L-shaped operation piece 17 that is rocked by opening the lid 10.

The main body 15 has an elastic displacement member 13
Is formed in a ring shape having a mounting portion 18 to which the elastic displacement member 13 is locked.

The engaging piece 16 is provided on the outer periphery of the main body 15.
It has a substantially rectangular shape and is integrally formed to protrude. At the tip of the engagement piece 16, an engagement claw 20 that engages with the engagement grooves 6 a, 7 a of the tape reels 6, 7 is formed.

The operation piece 17 is provided on the outer periphery of the main body 15.
The lid 10 is formed integrally with and protrudes from the abutting projection 10 b of the abutting piece 10 a of the lid 10. The operation piece 17 is swung by the abutting projection 10 b of the lid 10 to swing the main body 15.

The elastic displacement member 13 is formed of a resin material such as engineering plastic having relatively high rigidity such as polyacetal (POM). As shown in FIG. 4, the elastic displacement member 13 has a central portion 21 fixed by the rotation regulating support shaft 14 and an elastic displacement portion 22 that urges an elastic force by being bent. .

A shaft hole 23 into which the rotation regulating support shaft 14 is fitted is formed in the center portion 21. The shaft hole 23 is formed in a polygonal cross section such as a hexagonal shape. The elastic displacement part 22 is integrally formed in a substantially curved shape so as to be pulled out from the center part 21.

The elastic displacement portion 2 is provided on the outer periphery of the center portion 21.
The connecting portion 24 having the two base end portions continuously formed has a narrow cross-sectional area by forming a constricted shape in which the width and the like of the elastic displacement portion 22 are gradually reduced toward the center portion 21. .
That is, since the connection portion 24 is formed in a constricted shape, stress concentration is promoted, and the bent elastic displacement portion 22 is elastically deformed into a favorable spiral shape.

A locking claw 25 is formed at the distal end of the elastic displacement portion 22 so as to lock with the locking portion 19 of the mounting portion 18 when mounted on the mounting portion 18 of the lock member 12. I have.

Note that the elastic displacement member 13 is
2 may be formed in a flat plate shape, and may be formed so as to be spirally bent when mounted on the mounting portion 18 of the lock member 12.

The rotation restricting support shaft 14 is formed in a polygonal cross section such as a hexagon, and its base end is set up on the lower half 4 of the tape cartridge 1. In addition, the rotation restricting support shaft 14 is fitted in a shaft hole 23 of the elastic displacement member 13 to restrict rotation of the elastic displacement member 13 and fix it.

The rotation regulating support shaft 14 and the shaft hole 23
Is formed in a polygonal shape so that the position of the engagement piece 16 of the lock member 12 with respect to the engagement grooves 6a and 7a of the tape reels 6 and 7 and the engagement piece 16 It is possible to finely adjust the elastic force or the like that is urged when engaged.

The operation of restricting the rotation of the tape reels 6 and 7 in the reel lock mechanism 11 configured as described above will be described with reference to FIG. First, as shown in FIG. 5, the reel lock mechanism 11 is configured such that the elastic displacement member 13 is spirally bent and the base end of the lock member 12 is fixed to the rotation regulating support shaft 14. It is attached to the mounting part 18 of the main body part 15.

Therefore, the lock member 12 is rotated in the direction A in FIG. 5 by the elastic force of the bent elastic displacement member 13, so that the engagement piece 16 is swung in the direction B in FIG. You. When the lock member 12 is swung in the D direction, the reel lock mechanism 11
Is engaged with the engaging grooves 6a, 7a of the tape reels 6, 7, so that the tape reels 6, 7 cannot be rotated.

When the lid 10 is opened, the contact piece 10a of the lid 10
Is swung, the abutting projection 10b of the contact piece 10a is abutted against the operation piece 17 and the operation piece 1
7 is moved in the direction opposite to the direction B in FIG.

When the operation piece 17 is moved against the elastic force of the elastic displacement member 13, the lock member is engaged with the engagement claw 20 of the engagement piece 16 and the engagement groove 6 of the tape reel 6, 7.
a, 7a are released, and the tape reel 6,
7 is rotatable.

As described above, according to the tape cartridge 1 of the embodiment, the reel lock mechanism 11 includes the lock member 12 formed of a resin material, the elastic displacement member 13 formed of a resin material, Since the provision of the rotation restricting support shaft 14 for fixing the base end of the displacement member 13 reduces the work of separating metal parts and resin parts when the damaged tape cartridge 1 is discarded. In addition, it is possible to easily perform disposal processing. Further, according to the reel lock mechanism 11, since the configuration is simplified, the workability of the assembling work in the manufacturing process can be improved.

The above-mentioned reel lock mechanism 11
Although the lock member 12 and the elastic displacement member 13 are configured to be independently provided, an example of another reel lock mechanism 31 including the reel lock member 32 in which the lock member and the elastic displacement member are integrally formed, This will be described with reference to FIG.

As shown in FIG. 6, the reel lock mechanism 31 includes a reel lock member 32 for restricting the rotation of the tape reels 6 and 7, a position restricting piece 33 for restricting the swing position of the reel lock member 32. And a rotation restricting support shaft 34 for restricting and fixing the rotation of the reel lock member 32.

The reel lock member 32 is formed of a resin material such as, for example, polyacetal (POM). As shown in FIG.
a, a lock portion 36 that engages with the
An elastic displacement portion 37 for imparting a swinging behavior to the device and an operation portion 38 operated by the lid 10 are integrally formed.

The lock portion 36 is formed substantially in the shape of a letter, and has a base end integrally formed with the outer peripheral portion of the elastic displacement portion 37. An engagement claw 40 is formed at the tip of the lock portion 36.

The elastic displacement portion 37 is formed in a substantially arc shape, and has a central portion 41 connected to one end side via a connecting portion 44. The central portion 41 is provided with a shaft hole 43 into which the rotation regulating support shaft 34 is fitted. The cross-sectional area of the connecting portion 44 is reduced by forming a constricted shape in which the width and the like of the elastic displacement portion 37 are gradually reduced toward the center portion 41. Since the connection portion 44 is formed in a constricted shape, stress concentration is promoted, and the bent elastic displacement portion 37 is elastically deformed into a good spiral shape.

The operating portion 38 is formed in a substantially L-shape, and is formed at the tip of the elastic displacement portion 37 so as to face the contact piece 10a of the lid 10.

The position restricting piece 33 is formed in an arc shape, and stands upright on the lower half 4 constituting the tape cartridge 1. This position regulating piece 33 has an inner peripheral surface,
The position of the elastic displacement portion 37 is regulated so that the center of swing of the lock portion 36 does not move and largely change by sliding contact with the outer peripheral surface of the elastic displacement portion 37. In addition, this position restricting piece 33 may be configured by erecting a columnar rib, for example.

The rotation restricting support shaft 34 is formed in, for example, a polygon such as a hexagon, and stands upright on the lower half 4 of the tape cartridge 1. The rotation restricting support shaft 34 is fitted in a shaft hole 43 of the center portion 41 of the elastic displacement portion 37 to restrict and fix the rotation of the elastic displacement portion 37.

As shown in FIG. 6, the reel lock member 32 of the reel lock mechanism 31 constructed as described above is mounted on the rotation restricting support shaft 34 in a state where the elastic displacement portion 37 is spirally bent. The end is fixed and the position regulating piece 33 is
The outer peripheral portion of the elastic displacement portion 37 is brought into contact with and attached to the elastic displacement portion 37. That is, the reel lock member 32 is
3, the swing center of the lock portion 36 is reliably restricted.

Therefore, the entire elastic displacement portion 37 of the reel lock member 32 is rotated in the direction C in FIG. 6 by the elastic force of the bent elastic displacement portion 37, so that the lock portion 36 is moved to the position D in FIG. Rocked in the direction. When the lock portion 36 is swung in the direction D, the engagement claw 40 of the lock portion 36
7 are engaged with the engaging grooves 6a, 7a of the tape reel 6,
7 cannot be rotated.

When the lid 10 is opened, the contact piece 10a of the lid 10
Is swung, the abutting projection 10b of the contact piece 10a is abutted against the operating portion 38, and the operating portion 38 is moved in the direction opposite to the direction C in FIG.

The reel lock member 32 includes an elastic displacement portion 37
The engaging portion 40 of the lock portion 36 is disengaged from the engaging grooves 6a, 7a of the tape reels 6, 7 by moving the operating portion 38 against the elastic force of 6, 7 can be rotated.

According to the above-described reel lock mechanism 31,
A lock portion 36 for restricting rotation of the tape reels 6 and 7,
An elastic displacement portion 37 for imparting rocking behavior to the lock portion 36
And the reel lock member 32 formed integrally with the reel lock member 32, the overall configuration can be simplified and the number of components can be reduced.

Therefore, the reel lock mechanism 31
Since the number of parts is reduced, the workability of the assembling work in the manufacturing process can be improved, and the yield can be improved and the manufacturing cost can be reduced. According to the reel lock mechanism 31 including the reel lock member 32, the operation reliability of the tape reels 6 and 7 can be improved.

Although the reel lock mechanisms 11 and 31 according to the present embodiment are configured to be operated by the lid 10, the reel lock mechanisms 11 and 31 may be operated via another member such as a lid lock member that is linked to the opening and closing operation of the lid 10. Needless to say, it may be configured to be operated by the user.

[0053]

As described above, according to the reel lock mechanism of the present invention, the lock portion is formed by the resin material, and the lock portion is formed by the elastic force formed by the resin material and bent in a spiral shape. An elastic displacement portion that imparts a swinging behavior to the portion, an operation portion provided on the lock portion and operated by the swing operation means, and one end of the elastic displacement portion is fixed to restrict rotation of the elastic displacement portion. With the provision of the rotation regulating support shaft, when a damaged tape cartridge is discarded, the work of separating metal parts and resin parts is reduced, so that disposal processing can be performed easily. Is done.

According to the reel lock mechanism of the present invention, a reel lock member in which a lock portion and an operation portion are integrally formed with an elastic displacement portion, and a state in which the elastic displacement portion of the reel lock member is elastically deformed. By providing a position restricting portion for restricting the rocking position of the lock portion by contacting the outer peripheral portion of the elastic displacement portion, the overall configuration can be simplified and the number of components can be reduced. Therefore, in the reel lock mechanism, since the number of parts is reduced, the workability of the assembling work in the manufacturing process is improved, so that the yield can be improved and the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view showing a main part of a tape cartridge including a reel lock mechanism according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the reel lock mechanism.

FIG. 3 is a plan view showing a lock member constituting the reel lock mechanism.

FIG. 4 is a plan view showing an elastic displacement member constituting the reel lock mechanism.

FIG. 5 is a plan view for explaining an operation in which the reel lock mechanism regulates rotation of the tape reel.

FIG. 6 is a plan view showing an example of another reel lock mechanism.

FIG. 7 is a plan view showing a main part of a tape cartridge provided with a conventional reel lock mechanism.

FIG. 8 is a perspective view showing a reel lock member constituting a conventional reel lock mechanism.

[Explanation of symbols]

1 tape cartridge, 2 magnetic tape, 6 supply side tape reel, 7 take-up side tape reel, 11 reel lock mechanism, 12 lock member, 13 elastic displacement member,
14 rotation control spindle, 15 main body, 16 engagement piece,
17 Operation piece

Claims (4)

[Claims] A lock portion formed of a resin material and provided to be swingable with respect to the tape reel and engaging with the tape reel to regulate the rotation of the tape reel; a spiral formed of a resin material; The locking portion is operated by an elastic displacement portion that imparts a swinging behavior to the locking portion by an elastic force generated by the locking portion, and an engagement release unit that is provided in the locking portion and that releases an engagement state between the tape reel and the locking portion. A reel lock mechanism, comprising: an operation unit; and a rotation restricting shaft that fixes one end of the elastic displacement unit and restricts rotation of the elastic displacement unit. 2. A reel lock member in which the lock portion and the operation portion are integrally formed with the elastic displacement portion, and an outer periphery of the elastic displacement portion in a state where the elastic displacement portion of the reel lock member is elastically deformed. 2. The reel lock mechanism according to claim 1, further comprising: a position restricting portion that contacts the portion and restricts a swinging position of the lock portion. 3. 3. An elastic displacement member for urging an elastic force by being spirally bent, and a lock member having a mounting portion to which the elastic displacement member is attached while urging the elastic force. The reel lock mechanism according to claim 1, wherein: 4. The reel lock mechanism according to claim 3, wherein the elastic displacement member is formed in a substantially flat plate shape, is spirally bent, and is attached to a mounting portion of the lock member.