JP4183801B2 - Magnetic tape cassette loading device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a loading device that can be suitably implemented in an on-vehicle audio device that reproduces a magnetic tape cassette, and more particularly to an improved configuration for retracting a magnetic tape cassette.
[0002]
[Prior art]
FIG. 7 is a plan view showing the configuration of the loading device 2 of the magnetic tape cassette 1 in a typical in-vehicle acoustic device of the prior art, and FIG. 8 shows the engaging member 6 of the loading device 2 arranged at the insertion start position. It is sectional drawing which shows a state. The loading device 2 has a holding body 3 that holds the magnetic tape cassette 1 and moves up and down over a loading start position and a loading completion position. The holding body 3 extends in the insertion direction A1 of the magnetic tape cassette 1. A sliding groove 4 is formed, and an end wall 5 that is bent from the downstream end (left side in FIGS. 7 and 8) in the insertion direction A1 to the cassette insertion space side (lower side in FIG. 8) is formed. The An engaging member 6 is provided in the sliding groove 4 so as to be slidable in the insertion direction A1 and the discharge direction A2 opposite to the insertion direction A1.
[0003]
The engaging member 6 includes a guide piece 7 that fits into the sliding groove 4, an engaging protrusion 9 that fits detachably into the reel hole 8 of the magnetic tape cassette 1, and an insertion direction A 1 of the magnetic tape cassette 1. The guide piece 7, the engaging projection 9, and the stopper 11 are integrally formed of a synthetic resin material. A metal pin 12 is erected on the guide piece 7 of the engaging member 6 on the side opposite to the stopper 11 (upper side in FIG. 8), and the engaging member 6 is inserted by the swinging means 13. The insertion start position, which is the upstream end position in the direction A1, and the downstream end position in the insertion direction A1, and the insertion of the stopper 11 of the engaging member 6 and the end wall 5 of the holding body 3 abut. It is elastically biased by the compression coil spring 20 of the swinging means 13 so as to be stabilized at two positions.
[0004]
The oscillating means 13 includes a first oscillating lever 15 having a long hole 14 into which the pin 12 is fitted, and the first oscillating lever 15 is pin-coupled by a pin 15 a and is inserted in an insertion direction about the oscillating shaft 16. The first rocking lever 15 is locked to the second rocking lever 17 and is locked to the second rocking lever 17 angularly displaced in A1 and the discharging direction A2, and the first and second rocking levers 15 and 17, respectively. The compression coil spring 20 is configured to elastically bias in the insertion direction A1. The first rocking lever 15 has a rising piece 18 that elastically contacts the second rocking lever 17 in order to prevent angular displacement in the insertion direction A1 from a predetermined position by the spring force of the compression coil spring 20. Have The second rocking lever 17 is coupled by being connected to a driving member 19 whose pin 17a is displaced and driven along the insertion direction A1 and the discharging direction A2.
[0005]
When the magnetic tape cassette 1 is inserted in such a configuration of the loading device 2, as shown in FIG. 8, the engaging protrusion of the engaging member 6 at the insertion start position at the upstream end position in the insertion direction A1. 9 is pushed up by the label surface of the magnetic tape cassette 1 to allow displacement in the insertion direction A1 of the magnetic tape cassette 1, and when the magnetic tape cassette 1 is further inserted and the downstream end 10 abuts against the stopper 11. The engaging protrusion 9 is fitted in the reel hole 8. In this state, the drive member 19 is driven to be displaced in the ejecting direction A2 by a motor (not shown) or the like, whereby the swinging means 13 is displaced together with the engaging member 6 in the insertion direction A1. When the stopper 11 of the engaging member 6 comes into contact with the end wall 5 of the holding body 3, the rising piece 18 separates from the second swing lever 17 against the spring force of the compression coil spring 20, thereby the engaging member. 6 stoppers 11 are elastically pressed against the end wall 5.
[0006]
In this way, for example, the problem that the engaging member 6 is displaced from the downstream end position in the insertion direction A1 due to the backlash of the swing shaft 16 is prevented, and the magnetic tape cassette 1 is stabilized at the insertion completion position. And an excessive tensile force by the swinging means 13 can be absorbed.
[0007]
[Problems to be solved by the invention]
In such a prior art configuration, in order to stably place the magnetic tape cassette 1 at the insertion completion position and to absorb the excessive tensile force by the swinging means 13, the swinging means 13 includes the first and first The two swing levers 15 and 17 are connected to each other so as to be angularly displaceable, and the first swing lever 15 connected to the engaging member 6 is spring-biased in the insertion direction A1 with respect to the second swing lever 17. Since the compression coil spring 20 is provided, the number of parts is large and the structure is complicated. If the number of parts is large and the structure is complicated, the number of assembly steps during manufacturing increases, resulting in an increase in manufacturing cost. Further, considering that the loading device 2 is provided in the in-vehicle acoustic device, it is desirable to reduce the number of parts as much as possible in order to prevent the occurrence of malfunction due to vibration during vehicle travel.
[0008]
SUMMARY OF THE INVENTION An object of the present invention is to provide a magnetic tape cassette loading device with a simplified configuration by reducing the number of parts.
[0009]
[Means for Solving the Problems]
According to the first aspect of the present invention, the magnetic tape cassette is held and moved up and down over the loading start position and the loading completion position, and a sliding groove extending along the insertion direction of the magnetic tape cassette is formed on the upper part. A holding body in which an end wall that is bent toward the cassette insertion space side from the downstream end in the insertion direction is formed;
The guide groove that is movably fitted in the sliding groove in the insertion direction and the discharge direction opposite to the insertion direction is detachably fitted in the reel hole of the magnetic tape cassette at one end on the upstream side in the insertion direction. A fitting protrusion is provided, the end of the magnetic tape cassette in the downstream direction of insertion is in contact with the other end of the guide piece in the downstream direction of insertion, and the end wall of the holding body at the insertion completion position of the magnetic tape cassette An engagement member provided with a stopper that contacts
A pin provided on the guide piece of the engaging member so as to protrude on the opposite side of the stopper;
A swing lever that fits in the vicinity of one end portion so as to be movable along the longitudinal direction, and that is angularly displaced in the insertion direction and the discharge direction around the other end portion;
At least a stopper of the engaging member is made of a material having flexibility and elasticity, and a swing lever is provided between a support portion supported by being in contact with an end wall of the holding body and a base portion connected to the guide piece. The magnetic tape cassette loading device is characterized in that a region that is elastically deformed by a force that is angularly displaced in the insertion direction is formed.
[0010]
According to the present invention, when the engaging member is disposed on the most downstream side in the insertion direction of the sliding groove, the support portion of the stopper comes into contact with and supports the end wall of the holding body. Since a region that is elastically deformed by a force that is angularly displaced in the insertion direction of the swing lever is formed between the support portion and the base portion, when the support portion of the stopper contacts the end wall as described above, The engaging member can be elastically pressed against the end wall by the elastically deforming region. Therefore, the magnetic tape cassette can be stably disposed and the excessive force of the swing lever can be absorbed.
[0011]
In such a configuration, the arrangement of the magnetic tape cassette is stabilized by utilizing the elasticity of the material forming the stopper without making the swing lever as complicated as the swing means 13 of the prior art described above. And the excessive force of the swing lever can be absorbed, the number of parts can be reduced, and the configuration can be simplified. As a result, the manufacturing cost is reduced, and when the loading device of the present invention is used in an on-vehicle acoustic device, it is possible to reduce as much as possible malfunctions caused by vibrations during vehicle travel.
[0012]
According to the second aspect of the present invention, the support portion of the stopper is a protrusion formed to protrude from the surface facing the end wall of the holding body, and the area between the protrusion and the base is elastically deformed. It is characterized by.
[0013]
According to the present invention, only the region where the protrusion of the stopper is formed can be brought into contact with the end wall, and the remaining region can be separated from the end wall, so that a region that is elastically deformed reliably can be secured. Can do.
[0014]
According to a third aspect of the present invention, the protrusion formed on the support portion of the stopper is provided in a region farther from the base than a region where the end on the downstream side in the insertion direction of the magnetic tape cassette abuts. And
[0015]
According to the present invention, since the protrusion is provided in the region farther from the base than the region where the end of the stopper on the downstream side in the insertion direction of the magnetic tape cassette contacts, the downstream of the stopper in the insertion direction of the magnetic tape cassette The region where the end of the magnetic tape cassette abuts can be elastically deformed little by little over the entire surface, so that the stopper can be released without undesirably releasing the state where the downstream end of the magnetic tape cassette is in contact with the stopper. It can be greatly deformed.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is an enlarged cross-sectional view showing a part of a loading device 31 according to an embodiment of the present invention, and FIG. 2 is a plan view showing the entire configuration of the loading 31. 1 appears when viewed from the section line II in FIG. The loading device 31 is provided in an in-vehicle audio device that records / reproduces the recording contents of the magnetic tape cassette 32, and the magnetic tape cassette 32 inserted from an insertion / extraction opening formed in the front plate of the in-vehicle audio device. Is pulled from the insertion start position on the upstream side in the insertion direction A11 to the insertion completion position on the downstream side, is transported from the loading start position to the loading completion position, and is mounted on a recording / reproducing apparatus body including a magnetic head and a reel shaft. It is a device for.
[0017]
The loading device 31 holds the magnetic tape cassette 32 and moves up and down over a loading start position and a loading completion position, and a slide groove 33 extending along the insertion direction A11 of the magnetic tape cassette 32 is formed on the upper portion. A holding body 35 formed with an end wall 34 that is bent from the downstream end portion in the insertion direction A11 to the cassette insertion space side (lower side in FIG. 1), and discharge in the insertion direction A11 and the opposite direction to the sliding groove 33. A guide piece 36 that is movably fitted in the direction A12 is provided, and a fitting protrusion that is detachably fitted to the reel hole 37 of the magnetic tape cassette 32 is provided at one end of the guide piece 36 on the upstream side in the insertion direction A11. A portion 38 is provided, and an end 39 on the downstream side in the insertion direction A11 of the magnetic tape cassette 32 is provided at the other end on the downstream side in the insertion direction A11 of the guide piece 36. An engagement member 41 provided with a stopper 40 that contacts the end wall 34 of the holding body 35 at the insertion completion position of the magnetic tape cassette 32 and a guide piece 36 of the engagement member 41 opposite to the stopper 40. (The upper side in FIG. 1) is provided so as to protrude and the pin 42 is fitted in the vicinity of the one end portion 43 so as to be movable along the longitudinal direction, and the insertion direction A11 and the discharge direction are centered on the other end portion 44. And a swing lever 45 that is angularly displaced at A12.
[0018]
The guide piece 36, the engaging protrusion 38, the stopper 40, and the pin 42 constituting the engaging member 41 are integrally formed of a material having flexibility and elasticity such as a synthetic resin material. For example, polyacetal is selected as the synthetic resin material.
[0019]
The stopper 40 is supported in contact with the end wall 34 of the holding body 35 in a state where the engaging member 41 is disposed at the insertion completion position that is the most downstream position in the insertion direction A11 of the sliding groove 33. Part 46. Between the support portion 46 of the stopper 40 and the base portion 47 connected to the guide piece 36, there is a region 48 that is elastically deformed by a force that is angularly displaced in the insertion direction A11 of the swing lever 45. The support portion 46 is formed with a quadrangular prism-shaped protrusion 49 that protrudes downstream from the surface of the elastically deformable region 48 facing the end wall 34 in the insertion direction A11.
[0020]
The loading device 31 is driven to be displaced along the insertion direction A11 and the discharge direction A12 by a motor (not shown) and a power transmission mechanism that transmits the driving force of the motor, and the swing lever 45 is moved around the swing shaft 50. And a driving member 51 that drives the holding body 35 to move up and down from the loading start position to the loading completion position.
[0021]
FIG. 3 is a perspective view showing a state in which the holding body 35 and the engaging member 41 are connected to each other. Referring also to FIG. 1 and FIG. 2, the holding body 35 is a pair of a swing member 56 that is angularly driven around an axis 55 by a displacement drive of the drive member 51 and a free end portion of the swing member 56. The engaging member 60a, 60b engaging the engaging recesses 59a, 60b at the front end of the swinging member 56 are angularly connected to the swinging member 56 by the insertion holes 58a, 58b through which the engaging claws 57a, 57b are inserted. It is comprised by the holding member 61 connected so that displacement is possible.
[0022]
The holding member 61 includes a top plate 62, a pair of side plates 63 and 64 that are bent at both ends in the width direction (vertical direction in FIG. 2) perpendicular to the insertion direction A11 of the top plate 62 in the horizontal plane, It has a pair of bottom plates 65 and 66 that are connected to the lower ends of the side plates 63 and 64 and extend in directions close to each other, and holds the magnetic tape cassette 32. With the holding member 61 holding the magnetic tape cassette 32, the magnetic tape cassette 32 is displaced up and down from the loading start position to the loading completion position by angular displacement driving around the axis 55 of the swing member 56.
[0023]
The top plate 62 of the holding member 61 and the top plate 67 of the swing member 56 are formed with first and second sliding groove portions 68 and 69 that are continuous in the insertion direction A11 and the discharge direction A12, respectively. The first and second sliding groove portions 68 and 69 constitute the above-described sliding groove 33. In the vicinity of the upstream end portion in the insertion direction A11 of the first sliding groove portion 68, a connecting projection 70 is formed across the sliding groove 33 in the width direction.
[0024]
The guide piece 36 of the engaging member 41 is fitted into the first sliding groove portion 68, and the displacement of the driving member 51 drives the first sliding groove portion 68 from the extreme end position on the downstream side in the insertion direction A 11. It slides over the connecting projection 70 on the upstream side in the insertion direction A11.
[0025]
4 is a perspective view of the end wall 34 of the holding body 35 and the engaging member 41, and FIG. 5 is a front view of the engaging member 41. 1 to 3, the guide piece 36 of the engaging member 41 includes a flat guide piece main body 71 and a pair extending outward in the width direction from the guide piece main body 71 above the guide piece main body 71. Upper support pieces 72a and 72b, and a pair of lower support pieces 73a and 73b extending outward in the width direction from the guide piece main body 71, respectively.
[0026]
The guide piece main body 71 is supported in sliding contact with the top plate 67 of the swinging member 56 by the upper and lower support pieces 72a, 72b; 73a, 73b in a state of being fitted into the first sliding groove portion 68. The The engaging protrusion 38 formed at the upstream end of the guide piece main body 71 in the insertion direction A11 has an inclined surface 74 that protrudes downward toward the downstream side of the insertion direction A11. And a support surface 75 extending in the vertical direction downstream of the insertion direction A11.
[0027]
When the magnetic tape cassette 32 is inserted into the cassette insertion space of the holding member 61 in a state where the engagement member 41 is disposed on the most upstream side in the insertion direction A11, the engagement protrusion 38 is formed by the inclined surface 74 on the magnetic tape. Guided by the end 39 on the downstream side in the insertion direction A11 of the cassette 32, the guide piece body 71 is elastically deformed. A region 76 that is partially thin is formed in the guide piece main body 71, and the elastic deformation can be easily performed by the region 76.
[0028]
When the magnetic tape cassette 32 is further inserted and the end 39 abuts against the stopper 40, the engaging protrusion 38 is fitted into the reel hole 37 on the downstream side in the insertion direction A1 of the magnetic tape cassette 32. In this state, the drive member 51 is driven to be displaced in the discharge direction A12 by a motor (not shown), and the engagement member 41 is driven to be displaced in the insertion direction A11. In this state, the inner peripheral surface of the reel hole 37 of the magnetic tape cassette 32 is pressed by the support surface 75 of the engaging protrusion 38, and the magnetic tape cassette 32 is drawn into the cassette insertion space. When the stopper 40 elastically contacts the end wall 39 of the holding body 35, the drive drive of the drive member 51 is stopped in the insertion direction A11 upstream.
[0029]
The elastically deformable region 48 of the stopper 40 is formed with its one surface 48a retracted upstream of the protrusion 49 in the insertion direction A11 as described above, so that the protrusion 49 contacts the end wall 34 of the holding body 35. In the contact state, the elastically deformable region 48 can be greatly elastically deformed over the entire region. Further, the region 48 has a trapezoidal notch 78 formed at the lower end thereof, and a concave portion 79 that is convex on the upstream side in the insertion direction A11 is formed at the center in the width direction. Larger tolerance is possible.
[0030]
Since the stopper 40 can elastically abut against the end wall 34 in this way, the magnetic tape caused by the rattling on the swing shaft 50 of the swing lever 45 is the same as the configuration of the prior art described above. The magnetic tape cassette 32 can be surely lowered and displaced to the loading completion position without any deviation from the insertion completion position of the cassette 32, and an excessive force by the swing lever 45 can be absorbed.
[0031]
A longitudinal groove 80 is formed in the end wall 34 of the holding body 35 so as to continue to the downstream end portion in the insertion direction A11 of the first sliding groove portion 68. The pin 42 of the engaging member 41 is connected to the columnar shaft portion 81 projecting upward through the first sliding groove portion 68 and the vertical groove 80, and the upper end portion of the shaft portion 81. And a retaining piece 82 projecting radially outward.
[0032]
Referring to FIGS. 1 and 2 again, a long hole 84 extending in the longitudinal direction of the swing lever 45 is formed at one end 43 of the swing lever 45, and a pin of the engaging member 41 is formed in the long hole 84. 42 shaft portions 81 are fitted. A fitting pin 86 is formed on the other end side in the longitudinal direction of the swing lever 45 from the swing shaft 54. Such a rocking lever 45 is supported by being fitted into a rocking shaft fitting hole 87 whose rocking shaft 50 extends along the insertion direction A11 of the drive member 51.
[0033]
The drive member 51 has an L-shaped fitting groove 90 into which the fitting pin 86 of the rocking lever 45 is fitted together with the rocking shaft fitting hole 87. The L-shaped fitting groove 90 includes a lifting guide region 88 extending parallel to the swing shaft fitting groove 87, and an angular displacement guiding region 89 extending in the insertion direction A11 upstream of the lifting guide region 88 and extending in the width direction. Have When the driving member 51 is driven to be displaced in the insertion direction A11, the fitting pin 86 of the swing lever 45 is fitted into the angular displacement guide region 89, and in this state, the driving member 51 is further moved in the insertion direction A11. By being driven to be displaced, the swing lever 45 is angularly displaced in the discharge direction A12, and the engaging member 41 can be disposed at the insertion start position that is the most upstream position in the insertion direction A11.
[0034]
With the engaging member 41 disposed at the insertion start position, the drive member 51 is driven to be displaced in the discharge direction A12, whereby the swing lever 45 is angularly displaced in the insertion direction A11, and the engaging member 41 is inserted in the insertion direction A11. It is arranged at the insertion completion position which is the most downstream position. In this state, the drive member 51 is further driven to move in the direction of the arrow A12, whereby the fitting pin 86 moves from the angular displacement guide region 89 to the lift guide region 88 to move the drive member 51 in the direction of the arrow A12. While allowing displacement driving, a follower (not shown) formed on the swing member 56 of the holding body 35 is guided by an inclined guide groove formed on the drive member 51, and the swing member 56 is angularly displaced about the axis 55. While being driven, the holding member 51 is displaced downward from the loading start position to the loading completion position.
[0035]
In this way, the magnetic tape cassette 32 is pulled from the insertion start position to the insertion completion position on the most downstream side in the insertion direction A11, and the holding member 61 is moved down to the loading completion position, whereby the magnetic cassette tape 32 is recorded / not shown. It can be attached to the playback device body.
[0036]
When the magnetic tape cassette 32 attached to the recording / reproducing apparatus main body is ejected, the operation is opposite to that described above, that is, the drive member 51 is driven to be displaced in the insertion direction A11 and the swing member 56 is moved around the axis 55. The holding member 61 is displaced upward from the loading completion position to the loading start position. In this state, when the driving member 51 is further displaced in the insertion direction A11, the fitting pin 86 of the swing lever 45 moves from the upstream end position in the insertion direction A11 upstream of the elevation guide region 88 to the angular displacement guide region 89. The rocking lever 45 is angularly driven in the discharge direction A12 to drive the engagement member 41 from the insertion completion position to the insertion start position. Accordingly, the magnetic tape cassette 32 can be pushed out in the discharge direction A12 and discharged from the holding body 35.
[0037]
According to such a configuration of the present embodiment, in order to stably dispose the engaging member 41 at the insertion end position at the downstream end position in the insertion direction A11, the elastically deformable region 48 of the stopper 40 is provided. Since the stopper 40 is elastically brought into contact with the end wall 34 using elastic deformation, the number of parts of the swing lever 45 is reduced and the configuration is simplified as compared with the configuration of the above-described prior art. be able to. Accordingly, the number of assembly steps during manufacturing is reduced, the manufacturing cost is reduced, and in consideration of the case where the loading device 31 of the present embodiment is provided in an in-vehicle acoustic device, malfunction caused by vibration during traveling of the vehicle. Can be eliminated.
[0038]
Further, according to the present embodiment, the protrusion 49 that contacts the end wall 34 is disposed in a region farther from the base 47 than the region in which the end 39 of the magnetic tape cassette 32 contacts the stopper 40. 40 can be greatly deformed as shown by a one-dot chain line 91 in FIG. If the protrusion 49 is formed in a region where the end 39 of the magnetic tape cassette 32 of the stopper 40 abuts, the region where the upper corner 39a of the end 39 of the stopper 40 abuts with the protrusion as a boundary, The amount of elastic deformation of the stopper 40 differs greatly from the region where the lower corner portion 39b contacts the protrusion, and the magnetic tape cassette 32 is moved downstream in the discharge direction A12 by the lower region where the elastic deformation of the stopper 40 is small. There arises a problem that it is pushed to the side and is undesirably discharged from the holding body 35. However, in the present embodiment, as described above, the protrusion 49 is disposed in a region farther from the base portion 47 than the end portion 39, so that the above-described problems can be avoided.
[0039]
Further, the pin 42 of the engaging member 41 is made of a synthetic resin material and can be formed integrally with the guide piece 36. Therefore, the pin 42 is disposed on the upper portion of the base 47 to which the stopper 40 of the guide piece 36 is connected. The elastic deformation amount of the stopper 40 can be increased as much as possible. If the pin 42 is made of metal in the same manner as the above-described prior art and is embedded in the guide piece 36, the base portion of the guide piece 36 is secured to ensure the mechanical position of the metal pin. This is limited to the insertion direction A11 upstream of 47. However, since the pin 42 of the present embodiment is formed integrally with the guide piece 36, the mechanical strength does not decrease even if it is formed in the vicinity of the base 47, thereby greatly deforming the stopper 40 as described above. Can be made.
[0040]
Referring to FIG. 4 again, the stopper 40 of the engaging member 41 according to the present embodiment forms an elastically deformable region 48 by cutting away the existing stopper indicated by a virtual line 92 from the region excluding the protrusion 49. Also good. Thus, the stopper of the existing engaging member can be cut out to form the engaging member 41 of the present invention, so that the present invention can be advantageously implemented.
[0041]
In the embodiment shown in FIGS. 1 to 5 described above, the surface of the protrusion 49 has a quadrangular shape. However, as another embodiment of the present invention, the surface of the protrusion 49 is formed in a hemispherical shape or a substantially hemispherical shape. Also good. In such an embodiment, the elastically deformable region 48 of the stopper 40 can be bent more easily, and an excessive tensile force due to a force acting on the downstream side in the insertion direction A11 of the swing lever 45 is absorbed, The stopper 40 can be elastically brought into contact with the end wall 30.
[0042]
FIG. 6 is a perspective view showing an engaging member 95 according to still another embodiment of the present invention. Note that this embodiment is similar to the embodiment shown in FIGS. 1 to 5 described above, and corresponding portions are denoted by the same reference numerals and description thereof is omitted. In this embodiment, it should be noted that a pair of notches 97a and 97b extending vertically are formed on the stopper 99 on both sides in the width direction of the stopper 96 instead of the projection 49 described above. The region between the notches 97a and 97b is an elastically deformable region 98.
[0043]
In such a configuration, when the stopper 99 comes into contact with the end wall 34, the elastic deformation region 48 protrudes into the longitudinal groove 80 of the end wall 34 and is elastically deformed. Can be elastically contacted. In such an embodiment, when the stopper 92 of the existing engaging member is used as described above, it is only necessary to form the pair of notches 97a and 97b, so that the present invention can be implemented more advantageously. Can do.
[0044]
1 to 6 described above, the guide piece 36, the engaging protrusion 38, the stoppers 40 and 99, and the pin 42 of the engaging member 41 are integrally formed of a synthetic resin material. In another embodiment of the present invention, at least the stopper 40; 99 alone is formed of a synthetic resin material, and the other guide piece 36, the engaging protrusion 38 and the pin 42 are made of metal, for example, stainless steel or aluminum alloy. It may be made.
[0045]
【The invention's effect】
According to the first aspect of the present invention, the region that is elastically deformed by the force that is angularly displaced in the insertion direction of the swing lever is formed between the support portion and the base portion. When the portion comes into contact with the end wall, the engaging member can be elastically pressed against the end wall by the elastically deforming region. Therefore, the magnetic tape cassette can be stably disposed and the excessive force of the swing lever can be absorbed.
[0046]
In such a configuration, the arrangement of the magnetic tape cassette is stabilized by utilizing the elasticity of the material forming the stopper without making the swing lever as complicated as the swing means 13 of the prior art described above. And the excessive force of the swing lever can be absorbed, the number of parts can be reduced, and the configuration can be simplified. As a result, the manufacturing cost is reduced, and when the loading device of the present invention is used in an on-vehicle acoustic device, it is possible to reduce as much as possible malfunctions caused by vibrations during vehicle travel.
[0047]
According to the second aspect of the present invention, only the region of the stopper where the protrusion is formed can be brought into contact with the end wall, and the remaining region can be separated from the end wall. An area can be secured.
[0048]
According to the third aspect of the present invention, since the protrusion is provided in a region farther from the base than the region where the end of the stopper on the downstream side in the insertion direction of the magnetic tape cassette contacts, the magnetic tape cassette of the stopper The region where the end on the downstream side in the insertion direction abuts can be elastically deformed little by little over the entire surface, thereby undesirably releasing the state where the end on the downstream side of the magnetic tape cassette is in contact with the stopper. Without stopping, the stopper can be greatly deformed.
[Brief description of the drawings]
FIG. 1 is an enlarged cross-sectional view of a part of a loading device 31 according to an embodiment of the present invention.
FIG. 2 is a plan view showing the overall configuration of the loading device 31. FIG.
FIG. 3 is a perspective view showing a state in which a holding body 35 and an engaging member 41 are connected.
4 is a perspective view showing an end wall 34 and an engaging member 41 of a holding body 35. FIG.
5 is a front view of the engaging member 52. FIG.
6 is a perspective view showing an engaging member 95 and an end wall 34 according to still another embodiment of the present invention. FIG.
7 is a plan view showing a typical prior art loading device 2. FIG.
FIG. 8 is a cross-sectional view showing a state in which the engaging member 6 of the loading device 2 is arranged at the insertion start position.
[Explanation of symbols]
31 Loading device
32 Magnetic tape cassette
33 Sliding groove
34 End wall
35 Holder
36 Guide piece
37 reel hole
38 engagement protrusion
39 End of downstream side of magnetic tape cassette 32 in insertion direction A11
40,99 stopper
41,95 engaging member
45 pin
43 One end
44 Other end
45 Swing lever
46 Supporting part
47,96 base
48; 98 Elastic deformation possible region
49 Protrusion
50 Oscillating shaft
51 Drive member
A11 Insertion direction
A12 Discharge direction

Claims (3)

The magnetic tape cassette is held and moved up and down over a loading start position and a loading completion position, and a sliding groove extending along the insertion direction of the magnetic tape cassette is formed in the upper part, and the cassette is formed from the end on the downstream side in the insertion direction. A holding body formed with an end wall that bends toward the insertion space;
The guide groove that is movably fitted in the sliding groove in the insertion direction and the discharge direction opposite to the insertion direction is detachably fitted in the reel hole of the magnetic tape cassette at one end on the upstream side in the insertion direction. A fitting protrusion is provided, the end of the magnetic tape cassette in the downstream direction of insertion is in contact with the other end of the guide piece in the downstream direction of insertion, and the end wall of the holding body at the insertion completion position of the magnetic tape cassette An engagement member provided with a stopper that contacts
A pin provided on the guide piece of the engaging member so as to protrude on the opposite side of the stopper;
A swing lever that fits in the vicinity of one end portion so as to be movable along the longitudinal direction, and that is angularly displaced in the insertion direction and the discharge direction around the other end portion;
At least a stopper of the engaging member is made of a material having flexibility and elasticity, and a swing lever is provided between a support portion supported by being in contact with an end wall of the holding body and a base portion connected to the guide piece. A magnetic tape cassette loading device, characterized in that a region that is elastically deformed by a force that is angularly displaced in the insertion direction is formed. The support portion of the stopper is a protrusion formed to protrude from the surface facing the end wall of the holding body, and is an area that is elastically deformed between the protrusion and the base portion. Magnetic tape cassette loading device. 3. The magnetic tape according to claim 2, wherein the protrusion formed on the support portion of the stopper is provided in a region farther from the base than a region where the end on the downstream side in the insertion direction of the magnetic tape cassette abuts. Cassette loading device.

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