JP5228981B2 - Disc loader swing arm mounting structure - Google Patents

Description

  The present invention relates to a rocking arm mounting structure of a disk loader, and more particularly, a rocking motion that starts when a disk as a recording medium is inserted into the disk loader and starts the operation of the disk loader or transmits the operation of another operation mechanism. The present invention relates to a moving arm mounting structure.

  In a slot-in type disk loader, a swing arm is attached to the chassis, and the loading (insertion) and unloading (discharge) of the disk are performed through the swinging motion of the swing arm in the forward direction or the reverse direction. Some have been implemented (see, for example, Patent Document 1, Patent Document 2, and Patent Document 3).

  Among the above-mentioned patent documents, Patent Document 1 relates to a slot-in type disk loader, and a disk arm (corresponding to a swing arm) attached to a chassis via a rotating shaft revolves around the rotating shaft, It is described that such a disc arm turning operation is interlocked with a disc insertion operation. There is also a description of measures for ensuring that the centering of the disk during the loading process is performed through the action of the disk arm.

  Patent Documents 2 and 3 describe measures for improving the stability of the centering action of the disk during the loading process regarding the slot-in type disk loader.

  As can be seen from the descriptions in the above-mentioned Patent Documents 1 to 3, it is meaningful that the centering action of the disk is reliably and stably performed in the field related to the disk loader. In order to improve the reliability and stability of the centering action, it can be said that it is beneficial to improve the reliability and stability of the swinging motion of the swinging arm.

  FIG. 3 is a plan view showing a mounting structure of a swing arm of a conventional disk loader. FIG. 4 is an enlarged cross-sectional view showing a portion along line IV-IV in FIG. Next, referring to FIG. 3 and FIG. 4, the mounting structure of the swing arm according to the conventional example will be described.

  3 and 4, reference numeral 10 denotes a chassis, and the chassis 10 is made of sheet metal. Reference numeral 20 denotes a swing arm made of a resin molded body, and its base 21 is rotatably attached to the chassis 10 by a support shaft 23. The arm portion 22 of the swing arm 20 extends long from the base portion 21. The swing arm 20 includes a swing guide mechanism 30 around the base portion 21.

  In the mounting structure of the swing arm according to the conventional example, the swing guide mechanism 30 includes an opening 41 formed in an arc shape in the chassis 10 by punching, and a lift prevention piece 51 that prevents the swing arm 20 from lifting from the chassis 10. And had. As shown in FIG. 4, the lifting prevention piece 51 is formed in a substantially L shape, extends from the swing arm 20 and is inserted into the opening 41 in a loosely fitted state. The flat upper surface of the tip portion 52 of the lifting prevention piece 51 is a sliding portion 53, and the sliding portion 53 is formed on the back side of the chassis 10 at the lip of the opening 41. The moving surface (back side sliding surface) 12 is slidably contacted. Further, since the swing arm 20 overlaps the surface of the chassis 10 in a contact state, a sliding surface (front sliding surface) 13 is formed on the front side of the chassis 10 at the lip of the opening 41, and the front side thereof. A flat back surface 25 of the swing arm 20 is slidably contacting the sliding surface 13 in an overlapping manner.

  In the mounting structure of the swing arm according to the conventional example adopting this configuration, when the swing arm 20 mounted on the chassis 10 by the support shaft 23 is stopped and during the swing operation indicated by the arrow R, the floating prevention piece Since the sliding portion 53 of 51 is always in contact with the rear side sliding surface 12 of the chassis at the lip of the opening 41, the swing arm 20 is restrained from being displaced in a direction away from the surface of the chassis 10. The floating arm 20 is prevented from floating. The swing arm 20 shown in FIG. 3 has an arm portion 22 that extends long on one side across the base portion 21, and has a linkage pin 24 with an operating mechanism (not shown) on the other side. Yes. Then, the arm unit 22 performs an operation of detecting and pushing the disk inserted into the disk loader. In addition, the operation of another operation mechanism is transmitted to the swing arm via the linkage pin 24.

JP 2007-58906 A JP 2007-213691 A JP 2008-52854 A

  In the swing arm mounting structure according to the conventional example described with reference to FIG. 4, the flat upper surface of the tip end portion 52 of the lifting prevention piece 51 is made the sliding portion 53, as is apparent from FIG. The moving portion 53 is slidably in contact with the rear side sliding surface 12 of the chassis 10 at the edge of the opening 41 of the chassis 10. Therefore, the region on the chassis 10 side where the sliding portion 53 is in contact includes the lip edge portion a on the back surface side of the opening 41. In addition, the flat back surface 25 of the swing arm 20 is slidably in contact with the front side sliding surface 13 of the chassis 10, and the region on the chassis 10 side where the back surface 25 of the swing arm 20 is in contact with The mouth edge portion b on the surface side of the opening 41 is included. Further, when the opening 41 is opened at the top of the bulging portion 15 formed in a stepped shape in the chassis 10, the top outer edge c of the bulging portion 15 corresponds to the back surface 25 of the swing arm 20. It is included in the area on the chassis 10 side that is in contact.

  However, if the chassis 10 is made of sheet metal, the opening 41 is formed by punching, and the bulging portion 15 is formed by pressing. Therefore, the edge edges a and b on the front and back of the opening 41 and the bulging portion are formed. Burr may occur on the outer peripheral edge c of the protruding portion 15 due to punching or pressing. Then, if burrs are generated at the outer edge c of the mouth edge portions a and b and the bulging portion 15, even if the burrs are fine, a piece for preventing the swinging arm 20 from floating up to the burr. The sliding portion 53 of 51 and the back surface 25 of the swing arm 20 may be caught, and the smooth swing operation of the swing arm 20 may be impaired. In addition, if the smoothness of the operation of the swing arm 20 is impaired, the loading and unloading operations of the disk are adversely affected, and the centering operation of the disk may be adversely affected. There is a problem that leads to.

  The present invention has been made in view of the above situation and problems. Despite having a swing guide mechanism for swinging the swing arm along the chassis, punching and pressing are not necessary. Even if burrs are generated at the edge of the opening of the chassis, etc., the oscillating arm mounting structure of the disk loader does not cause the smooth oscillating operation of the oscillating arm to be impaired by the burrs. The purpose is to provide.

  Further, according to the present invention, the swing arm of the disk loader that can prevent the swing arm from being lifted by the swing guide mechanism as well as the sinking caused by the warp of the swing arm. An object is to provide a mounting structure.

  A swing arm mounting structure for a disk loader according to the present invention includes a sheet metal chassis, a swing arm that is swingably mounted on the chassis, and a displacement of the swing arm relative to the chassis in a near-distant direction. A swing guide mechanism for swinging the swing arm along the chassis. The swing guide mechanism has an opening formed by punching the chassis, and a lift prevention piece that prevents the swing arm from lifting by contacting the back side sliding surface of the chassis at the opening edge of the opening. And a sinking prevention piece that prevents the swinging arm from sinking by coming into contact with the front sliding surface of the chassis at the mouth edge of the opening.

Further, the lifting prevention piece extends from the swing arm and is inserted into the opening in a loosely fitted state and extends to the back side of the chassis, and the back side of the chassis of the supporting piece part A first protrusion for forming a gap space between the support piece and the lip edge portion of the opening by being slidably contacted with a back side sliding surface of the chassis. And the sinking prevention piece is provided on the swing arm so as to slidably contact the front sliding surface of the chassis so that the swing arm and the rim edge portion of the opening a second collision section, to form a clearance space between the first protrusion and the second protrusion, the swing of the swing arm
The position is shifted in the radial direction of the path, and the opening is pressed into the chassis in a stepped shape.
It is formed on the top of the bulged part that has been worked, and the first protrusion of the lift-off preventing piece is the top of the bulged part
The second protrusion of the sinking prevention piece is swelled in contact with the back side sliding surface formed on the back surface so as to be slidable.
Near the base of the slidable contact with the front sliding surface formed in the non-bulged portion of the chassis .

With this configuration, the anti-lifting piece abuts against the rear sliding surface of the chassis to prevent the swinging arm from lifting, and the sinking prevention piece contacts the front sliding surface of the chassis to prevent the swinging arm from moving. Since sinking is prevented, warp deformation of the swing arm that may be caused by a load applied to the swing arm is suppressed. Therefore, a situation in which the smooth swing operation of the swing arm is not hindered by the lifting or sinking of the swing arm does not occur. Also, since the first protrusion of the lifting prevention piece and the second protrusion of the sinking prevention piece prevent the opening edge of the chassis from coming into contact with the lifting prevention piece and the swing arm, Even if burrs associated with the punching process are formed at the edge edge portion of the opening, a situation in which the floating prevention piece and the swing arm are caught on the burrs and the smooth operation of the swing arm is prevented does not occur. Also,
Compared to the case where the first protrusion and the second protrusion sandwich the same part of the chassis,
The contact pressure (contact force) of the first protrusion and the second protrusion is unlikely to be excessive. Therefore, the first protrusion and the second
Even if the protrusion is in contact with the back side of the chassis or the sliding surface on the front side, the contact pressure
There is an advantage that the smooth swinging motion of the swinging arm is hardly hindered.

  Therefore, in the present invention, a gap space formed between the support piece and the opening edge edge portion of the opening by the first protrusion, and the swing arm and the opening edge of the opening by the second protrusion. The gap space formed between the edge portion and the edge portion is wider than the protruding width of the burr formed at the edge portion of the opening by punching.

  Furthermore, in the present invention, it is desirable that the swing arm is a resin molded body, and the lifting prevention piece and the sinking prevention piece are integrally formed of resin on the resin molded body.

  As described above, according to the present invention, it is possible to prevent the swing arm from being lifted by the swing guide mechanism for swinging the swing arm along the chassis. It is also possible to prevent subsidence caused by. Even if a swing guide mechanism is provided, even if burrs are generated at the edge of the opening of the chassis due to punching or pressing, the burrs cause the swing arm to move. There is no possibility that the smooth swinging motion is impaired. For this reason, it is possible to prevent the disk loading and unloading operations from being adversely affected by the occurrence of burrs, etc., and to prevent the disk centering operation from being adversely affected, effectively preventing the performance of the disk loader from being degraded. It becomes possible to do.

It is a top view of the attachment structure of the rocking | fluctuating arm of the disk loader concerning this invention. It is an expanded sectional view of the part which follows the II-II line of FIG. It is a top view of the attachment structure of the rocking | fluctuating arm of the disk loader by a prior art example. It is an expanded sectional view of the part which follows the IV-IV line of FIG.

  FIG. 1 is a plan view showing a mounting structure of a swing arm of a disk loader according to an embodiment of the present invention. FIG. 2 is an enlarged cross-sectional view showing a portion along line II-II in FIG. Next, a swing arm mounting structure according to an embodiment of the present invention will be described with reference to FIGS.

  In the swing arm mounting structure shown in FIGS. 1 and 2, the chassis 10 is made of sheet metal, and the swing arm 20 is a resin molded body. A base 21 of the swing arm 20 is rotatably attached to the chassis 10 by a support shaft 23. The arm portion 22 of the swing arm 20 extends long from the base portion 21. The swing arm 20 includes a swing guide mechanism 30 around the base portion 21.

  The swing guide mechanism 30 prevents the swing arm 20 from sinking, an opening 41 formed in an arc shape in the chassis 10 by punching, a lift prevention piece 51 that prevents the swing arm 20 from lifting from the chassis 10, and the swing arm 20. And a sinking prevention piece 61.

  As shown in FIG. 2, the lifting prevention piece 51 is formed in an approximately L shape, extends from the swing arm 20 and is inserted into the opening 41 on the chassis 10 in a loosely fitted state. The lip portion is in contact with the rear sliding surface 12 of the chassis 10. That is, the lifting prevention piece 51 extends from the swing arm 20 and is inserted into the opening 41 on the chassis 10 side in a loosely fitted state, and extends to the back side of the chassis 10, and the support piece. And a first protrusion 56 provided at a portion of the portion 55 facing the back surface of the chassis 10. The top of the first protrusion 56 is slidably in contact with the back side sliding surface 12 provided in the chassis 10, so that the support piece 55 and the edge edge a on the back side of the opening 41 are A gap space S1 is formed between the two. In this embodiment, although the first protrusion 56 is provided at the tip of the support piece 55, the first protrusion 56 may be provided at a place other than the tip of the support piece.

  As shown in FIG. 2, the sinking prevention piece 61 is formed only by the rib-like second protrusion 62 provided on the swing arm 20. And the edge part of the 2nd protrusion 62 is contact | abutting to the front side sliding surface 16 with which the chassis 10 is equipped so that sliding is possible. Further, since the end portion of the second protrusion 62 is in contact with the front side sliding surface 16 of the chassis 10, there is a gap space S <b> 2 between the swing arm 20 and the front edge portion b of the opening 41. Is formed. In this embodiment, the second protrusion 62 extends in a rib shape over the entire width of the arm portion 20.

According to the swing guide mechanism 30 configured as described above, the top of the first protrusion 56 of the lift-off preventing piece 51 is in contact with the back-side sliding surface 12 of the chassis 10, thereby being applied to the swing arm 20. The swing arm 20 is prevented from floating or warping and deforming to an unacceptable extent from the chassis 10 due to a load or the like. Further, since the end of the second protrusion 62 of the sinking prevention piece 61 is in contact with the front sliding surface 16 of the chassis 10, the swinging arm 20 sinks to an unacceptable degree in the direction of approaching the chassis 10. It is possible to prevent warping and warping. The top of the first protrusion 56 is the rear sliding surface 12 of the chassis 10.
Since the end of the second protrusion 62 is slidably in contact with the front-side sliding surface 16 of the chassis 10, the first protrusion 56 and the second protrusion 62 are brought into contact with the chassis. The fact that it is in contact with 10 does not hinder the smooth swinging motion of the swinging arm 20.

In particular, in this embodiment, a gap space S <b> 1 is formed between the support piece portion 55 of the lifting prevention piece 51 and the rim edge portion a on the back side of the opening 41 by the action of the first protrusion 51. Therefore, in the step of forming the opening 41 is subjected to punching to the chassis 10, even as fine burrs occurs in the mouth En'e Tsu di section a, the supporting piece part 55 of the preventing pieces 51 float on the burr pull There is no room for occurrence of a situation where the swinging arm 20 is hindered and the smooth swinging operation of the swinging arm 20 is hindered. Similarly, a gap space S <b> 2 is formed between the swing arm 20 and the front edge portion b of the opening 41 by the action of the second protrusion 62 . Therefore, in the step of forming the opening 41 is subjected to punching to the chassis 10, even as fine burrs occurs in the mouth En'e Tsu di section b, the supporting piece part 55 of the preventing pieces 51 float on the burr pull there is no room caused the situation that smooth swing motion of the swing arm 20 is impeded we are in it takes. As described above, the clearance spaces S1 and S2 are secured to prevent the support piece portion 55 and the swing arm 10 of the anti-lifting piece 51 from rubbing against burrs generated at the edge portions a and b of the opening 41. Has been. Therefore, the gap spaces S1 and S2 are formed by punching to the edge portion a.
, B is required to be wider than the protrusion width of the burr that may be formed.

In this embodiment, the opening 41 of the chassis 10 is formed at the top of the bulging portion 15 that is pressed into the chassis 10 in a stepped shape. Therefore, the area where the opening 41 is formed is smaller than the entire area of the chassis 10, which suppresses distortion and warping deformation at the position where the opening 41 is formed, and allows the swing arm 20 to move smoothly. Useful for making dynamic movements. In addition, even if burrs occur on the top outer edge c of the bulging portion 15, the top outer edge c and the swing arm 2
Since the clearance space S3 is formed by the action of the second protrusion 62 between the first and second members, the back surface 25 of the swing arm 20 is caught by the burr, and the swing motion of the swing arm 20 is smooth. There is no room for damage.

Further, the first protrusion 56 of the lifting prevention piece 51 is slidably in contact with the back-side sliding surface 12 formed on the top rear surface of the bulging portion 15. Further, the second protrusion 62 forming the sinking prevention piece 61 is slidably applied to the front sliding surface 16 formed in the non-bulged portion of the chassis 10 near the base of the bulged portion 15. It touches. With this configuration, the first protrusion 56 and the second protrusion
62 is provided with a position shifted in the radial direction of the swing path of the swing arm 20 around the support shaft 23. For this reason, compared with the case where the 1st protrusion 56 and the 2nd protrusion 62 are pinching the same part of the chassis 10 from the front and back, the 1st protrusion 56 and the 2nd protrusion with respect to the chassis 10
The contact pressure 62 is less likely to be excessive. As a result, even if the first protrusion 56 and the second protrusion 62 are in contact with the sliding surfaces 12 and 16 on the back side or the front side of the chassis 10, the swinging motion of the swinging arm is smoothly performed by the contact pressure. There is an advantage that it is hardly obstructed.

  Although the case where the swing guide mechanism 30 is applied to the arm portion 22 side of the swing arm 20 has been described above, a similar swing guide mechanism is provided on the side opposite to the arm portion 22 of the swing arm 20. Specifically, the present invention can be applied to the installation location side of the linkage pin 24.

  1 to 4, the same reference numerals are assigned to the same or corresponding parts for convenience of explanation.

DESCRIPTION OF SYMBOLS 10 Chassis 12 Back side sliding surface 15 Swelling part 16 Front side sliding surface 20 Oscillating arm 30 Oscillating guide mechanism 41 Opening 51 Lifting prevention piece 55 Supporting piece part 56 First protrusion 61 Sinking prevention piece S1, S2 Crevice space a, b Opening edge

Claims (3)

A sheet metal chassis, along a swing arm swingably mounted to the chassis, the swing arm to prevent displacement of the direction of access of said oscillating arm to said Shah <br/> over sheet to the chassis And a swing arm mounting structure of a disk loader having a swing guide mechanism for swinging together,
The swing guide mechanism, an opening which is opened by punching the chassis, and prevention pieces floating at the mouth edge of the opening in contact with the rear sliding surface of the chassis to prevent the floating of the swing arm, contact with the front sliding surface of the chassis at the rim of the opening and a prevention piece sinking prevent sinking of the swing arm,
The floating preventing member comprises a support piece which extend out to the back side of the chassis is inserted in a loosely fitted into the opening extending out from the swing arm, the rear surface of the chassis of the support piece a first projection for forming a clearance space between the rim edge portions of the opening and the support piece by provided on the counter portion slidably contacts the rear sliding surface of the chassis, the Have
Prevention pieces sinking said is a clearance space between the rim edge portions of the opening and its swing arm by said provided to the swing arm abuts slidably on the front sliding surface of the chassis second collision section to form, has,
The first protrusion and the second protrusion are displaced in the radial direction of the swing path of the swing arm.
Is provided,
The opening is formed at the top of the bulging portion that is pressed into the chassis in a stepped shape.
The first protrusion of the anti-lifting piece is formed on the back of the top of the bulging portion.
Slidably abutting the surface, and the second protrusion of the sinking prevention piece is near the base of the bulging portion.
A swing arm mounting structure for a disk loader that is slidably in contact with the front sliding surface formed on a non-bulged portion of the chassis . Between the rim edge portions of the opening and the swing arm by a gap space and the second projection which is formed between the rim edge portions of the opening and the support piece by the first projection 2. The rocking arm mounting structure for a disk loader according to claim 1, wherein the gap space formed is wider than the protruding width of the burr formed at the edge of the opening by punching. The result in the swing arm resin molding, the molded resin, wherein the floating and prevention piece and the <br/> prevent sinking piece according to claim 1 or claim 2 are integrally formed of plastic Mounting structure for the swing arm of the disk loader.

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