JP3469220B2 - Plate-shaped storage medium holder - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mounted in various terminal devices into which a plate-shaped storage medium such as a memory card (memory stick or the like) is inserted, and holds the plate-shaped storage medium in the stored state and the stored state. The present invention relates to a plate-shaped storage medium holder that releases the holding of the plate-shaped storage medium by pushing the plate-shaped storage medium and pushes the plate-shaped storage medium outward.

[0002]

2. Description of the Related Art In recent years, as various terminal devices such as digital cameras and mobile phones, it is rapidly becoming possible to read and / or write data by inserting a plate-shaped storage medium such as a memory card (memory stick etc.). Is becoming popular. In such a terminal device, as a holder into which a plate-shaped storage medium such as a memory card (Memory Stick, SD card, etc.) is inserted, the inserted plate-shaped storage medium is kept in the housed state and becomes a housed state. A so-called push-push type holding mechanism is widely adopted in which the holding of the plate-shaped storage medium is released by the pushing operation of the plate-shaped storage medium present, and the plate-shaped storage medium is pushed outward. Convenience of inserting and taking out is designed.

As the above-mentioned push-push type holding mechanism, there is one using a so-called heart cam (heart-shaped groove cam). The holding mechanism using this heart cam is
The slider provided on the side of the holder into which the plate-shaped storage medium is inserted is pressed by the plate-shaped storage medium inserted into the holder and moved to the back side of the holder, and the engagement pin protruding from this slider is Move along the heart cam. The heart cam has a first groove extending along the insertion direction of the plate-shaped storage medium with respect to the holder, and an end of the first groove located on the back side (hereinafter “back side”) in the insertion direction of the plate-shaped storage medium. A second groove extending obliquely toward the insertion port side (hereinafter referred to as the “insertion port side”) of the holder into which the plate-shaped storage medium is inserted from
A third groove extending in an oblique direction away from the insertion groove side end portion of the second groove toward the inner side and separated from the first groove;
A fourth groove that extends from the rear end portion of the groove toward the insertion port and communicates with the first groove, and the engagement pin of the slider is provided with the first groove, the second groove, and the fourth groove. The three grooves and the fourth groove are guided in this order. The slider is urged toward the insertion opening side by a spring, follows the insertion of the plate-shaped storage medium into the holder, reaches the rear end of the first groove, and then is urged by the urging force of the spring. The two grooves are pushed back toward the insertion port side, and locked in the connecting portion between the second groove and the third groove. The plate-shaped storage medium is removably locked in the holder by the locking means. As a result, the plate-shaped storage medium inserted in the holder is held so that it cannot be pulled out, and the state of being stored in the holder is maintained. When the plate-shaped storage medium in the housed state is pressed to the rear side in the insertion direction, the engagement pin of the slider pushed in the rear side in the insertion direction as the plate-shaped storage medium is pressed in passes through the third groove to the fourth groove. When the pushing force of the plate-shaped storage medium is released, the slider is returned in the insertion port direction while the engaging pin moves along the fourth groove by the urging force of the spring. Then, the locking of the plate-shaped storage medium by the locking means is released by the movement of the slider to the predetermined position, and the pressing of the plate-shaped storage medium in the insertion port direction by the slider is continued, so that the plate-shaped storage medium However, contrary to when inserted, it is pushed out from the insertion port.

[0004]

However, in the above-described holding mechanism, for example, when the terminal device equipped with this holding mechanism is accidentally dropped, the pushing force of the plate-shaped storage medium into the holder acts. Even if it is not, the holding state of the plate-shaped storage medium in the holder is released, and it is pushed out to the insertion port by the biasing force of the slider spring,
There was a possibility that it could be pulled out. That is, when the impact force applied to the terminal device exerts a force that moves the engagement pin from the connecting portion of the second groove and the third groove toward the rear end of the third groove, the third groove When the engaging pin moved to the inner side of the slider returns from the third groove to the connection portion with the second groove, the locked state of the slider is maintained and the holding state of the plate-shaped storage medium in the holder is maintained. When the engaging pin moved to the inner side of the third groove enters the fourth groove from the third groove, the slider is pushed back to the insertion port side by the urging force of the spring and the locking means causes the plate-shaped storage medium to move. The locked state is released. In this state, the plate-shaped storage medium can be easily pulled out from the holder, which causes a problem such as loss of the plate-shaped storage medium. To cope with this problem, for example, by increasing the pressing force of the spring for pressing the slider to make it difficult for the engaging pin in the third groove to move to the inner side of the third groove,
There are cases where measures are taken to prevent the holding state from being accidentally released due to impact force or the like. However, with such measures, there is a problem that the pushing operation at the time of taking out the plate-shaped storage medium becomes difficult and the workability of the normal holding release operation is deteriorated.

The present invention has been made in view of the above-mentioned problems, and it is possible to reliably maintain the storage and holding state of the plate-shaped storage medium even when an external force such as vibration or impact force acts, and further, the plate-shaped storage medium can be maintained. An object of the present invention is to provide a plate-shaped storage medium holder that can easily release and take out a storage medium.

[0006]

In order to solve the above problems, the present invention has an insertion slot for inserting a plate-shaped storage medium and a storage space for storing the plate-shaped storage medium inserted from the insertion port. By holding the casing and the plate-shaped storage medium stored in the storage space in a non-pullable manner, and by pushing the plate-shaped storage medium stored and held in the storage space from the insertion port to the back side of the casing. A holding mechanism for a plate-shaped storage medium, comprising: a holding mechanism that releases the holding of the plate-shaped storage medium and pushes the plate-shaped storage medium in a direction opposite to that when the plate-shaped storage medium is inserted into the storage space. A rail portion extending to a side portion of the casing along an insertion direction of the plate-shaped storage medium into the storage space;
A slider provided on the rail portion so as to be movable in the extending direction of the rail portion, and pressed by a plate-shaped storage medium inserted into the storage space and pushed toward the rear side of the rail portion, and a slider attached to the slider. The tip end side, which is arranged from the base end portion toward the rear side of the rail portion, is swingable around the base end portion, and is inserted into a groove cam formed in the rail portion and moved along the groove cam. A rocking bar having a cam engaging piece projecting from the tip, a movable block slidably provided on the rocking bar along the extending direction of the rocking bar, and a rear side of the rail portion. An urging member that urges the slider pushed into the rail portion to a front side of the rail portion by a reaction force, and engages with the plate-shaped storage medium when the slider is pushed inward of the rail portion. The storage state of the plate-shaped storage medium in the storage space And a stopper for maintaining said grooved cam has a first groove extending along said rail portion,
A second groove extending along the first groove and having an end portion on the front side of the rail portion communicating with the first groove, and a first groove extending from the rear side in the extending direction of the rail portion toward the front side. A third groove that is formed to incline from the side toward the second groove, and a fourth groove that extends obliquely toward the second groove from the front end of the third groove toward the rail rear side. Between the rail portion rear side end of the first groove and the rail portion rear side end of the third groove, and between the rail portion rear side end of the fourth groove and the second groove rail side. The cam engaging pieces of the swing bar of the slider are guided in the order of the first groove, the third groove, the fourth groove, and the second groove by connecting to the side end portions, respectively. The slider has a block sliding surface that extends from the second groove side toward the first groove side as it goes to the rear side of the rail portion, the block sliding surface being inclined with respect to the extending direction of the rail portion. There is provided a block contact wall formed at a position capable of contacting a movable block movable along the swing bar when the cam engaging piece is in the fourth groove of the groove cam. When the cam engagement piece is in the fourth groove,
While the movable block slides along the block sliding surface from the tip end side to the extension base end side by pressing the slider to the inner side of the rail portion, the cam engaging piece has a rail of the fourth groove. It is characterized in that the cam engagement piece can be moved from the fourth groove to the second groove by being moved toward the rear end portion of the portion.
According to a second aspect of the present invention, in the holder for the plate-shaped storage medium according to the first aspect, the movable block is attached to the tip end side of the swing bar by a block biasing member that exerts a reaction force on the slider side. It is characterized by being energized. According to a third aspect of the present invention, in the plate-shaped storage medium holder according to the first or second aspect, the movable block has a groove formed in a side portion of the movable block, the groove being formed in the swing bar from the side portion. It is characterized by being provided in.

In the plate-shaped storage medium holder of the present invention, the cam engaging piece at the tip of the swing bar attached to the slider enters the fourth groove, and the cam engaging piece exerts a reaction force on the rail portion. The slider is pressed toward the front end of the rail portion of the fourth groove by the biasing force of the biasing member that biases the slider toward the front side of the rail portion. The engagement of the stopper maintains the state in which the stopper cannot be pulled out. At this time, an external force such as vibration or impact force (for example, impact at the time of dropping and landing of a mobile phone on which the plate-shaped storage medium holder is mounted) is applied to the rail portion of the device in which the plate-shaped storage medium holder is mounted. Even when the slider is moved to the back side, the movable block movable along the swing bar contacts the block sliding surface of the block contact wall, and the block contact wall moves to the first position of the swing bar. By acting as a stopper that restricts the displacement to the 2 groove side, the movement of the cam engaging piece to the end of the fourth groove on the rear side of the rail portion is restricted, and the cam engaging piece moves from the 4th groove to the 2nd groove. It is prevented from entering. When the cam engagement piece enters the second groove, the slider is moved (returned) from the second groove to the first groove by the biasing force of the biasing member that biases the slider toward the front side of the rail portion. Will move to the front side of the rail part,
Although the holding state in which the plate storage medium cannot be pulled out by the holding mechanism is released, if the movement of the cam engagement piece from the fourth groove to the second groove is restricted, the holding mechanism holds the plate storage medium. There is no inconvenience that the state is inadvertently released.

According to the second aspect of the present invention, since the movable block is urged toward the tip end side of the rocking bar by the urging member for the block, the movable block is not affected by the external force such as the aforementioned impact force. Is brought into contact with the block sliding surface of the block contact wall, and the holding state of the plate-shaped storage medium by the stopper of the holding mechanism is stably maintained. The invention according to claim 1 includes a configuration in which the biasing member for the block is not provided. However, like the impact force acting on the entire holder for the plate-shaped storage medium, the tip side thereof (the rear side of the rail portion) is arranged along the swing bar. When an external force that moves the movable block to the side) is applied, the movable block that is movable along the swing bar contacts the block contact wall to restrict swing of the swing bar to the second groove side. Therefore, the holding state of the plate-shaped storage medium due to the engagement of the stopper of the holding mechanism is not released.

When the cam engaging piece is in the fourth groove and the plate-shaped storage medium housed in the casing is in the state of being held by the holding mechanism so that it cannot be pulled out, the rail portion is pushed by pushing the slider toward the rear side of the rail portion. By pressing the cam engagement piece from the fourth groove to the second groove by pushing it toward the back side, the holding state in which the plate-shaped storage medium cannot be pulled out by the holding mechanism can be released. The push-in operation of the slider is, for example, a further push-in operation of the plate-shaped storage medium already stored in the casing, a push-in of the slider or the plate-shaped storage medium by operating a pressing lever protruding from the casing, and the like. The movable block can be easily pushed back to the base end side of the swing bar. When the slider is pushed to the rear side of the rail, if the movable block comes into contact with the sliding surface of the block (abutment during the pushing of the slider or abutment from the beginning of pushing movement), the rocking bar is moved against the moving block. While sliding it, push it toward the back of the rail relative to the movable block. At this time, while the movable block that is in contact with the block contact wall is moved to the front side of the rail part by sliding along the block sliding surface, the cam engaging piece is located at the rear end part of the rail part of the fourth groove. It is forced to be pushed toward. Then, by finally moving the cam engagement piece to the second groove, the cam engagement piece is moved from the second groove to the first groove by the biasing force of the biasing member that biases the slider toward the front side of the rail portion. The slider moves to the front side of the rail while moving (returning),
The holding state in which the plate storage medium cannot be pulled out by the holding mechanism is released. The holding state in which the plate storage medium cannot be pulled out by the holding mechanism can be released.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A plate-shaped storage medium holder according to an embodiment of the present invention (hereinafter sometimes abbreviated as "holder") will be described with reference to the drawings. FIG. 1 is a view showing a casing 2 of a holder 1, where (a) is a front view,
(B) is a side view. 2 is an enlarged cross-sectional view showing the vicinity of the rail portion 3 provided on the side portion of the casing 2, FIG. 3 is a side sectional view of FIG. 2, and FIG. 4 is a diagram showing a storage state of the slider unit 4 in the rail portion 3. 2 is a sectional view taken along line AA of FIG. 2 (however, the slider shows a schematic structure), FIG. 5 is a diagram showing the slider unit 4 housed in the rail portion 3, and FIG. Front view, (b) side view, (c)
Is a rear view and (d) is a side view seen from the back side of the rail portion. 6A to 6F are views showing the shape of the slider 5,
7 is a perspective view showing the movable block 11 of the slider unit 5, FIGS. 8A and 8B are views showing the shape of the spring receiver 7 of the slider unit 5, and FIGS. 9A and 9B are slider units. 5 shows the shape of the stopper 6 of FIG.
(A)-(c) are plate-shaped storage media 8 inserted in the holder 1.
FIG.

As shown in FIGS. 1 and 2, this holder 1
Has a casing 2 into which the plate-shaped storage medium 8 is inserted, and a holding mechanism 9 provided on the side of the casing 2. As shown in FIGS. 10A to 10C, the plate-shaped storage medium 8 is specifically a rectangular plate-shaped memory card (memory stick) here. As shown in Figure 1,
The casing 2 is formed in a hollow case shape having an insertion port 2a into which the plate-shaped storage medium 8 is inserted and a storage space 2b in which the plate-shaped storage medium 8 inserted from the insertion port 2a is stored. As shown in FIG. 11, the terminals 2c provided on the inner side of the casing 2 in the insertion direction of the plate-shaped storage medium 8 are
The connection terminal 8b exposed on the back surface 8a side of the insertion tip of the plate-shaped storage medium 8 inserted into the storage space 2b is electrically connected to the connection terminal 8b. This terminal 2c is soldered to a circuit board 2e arranged in a window 2d opened in the casing 2, and when the connection terminal 8b of the plate-shaped storage medium 8 is connected to this terminal 2c, the terminal 2c is removed. Through,
The electric circuit on the side of the plate-shaped storage medium 8 and the electric circuit on the side of the circuit board 2e are electrically connected to each other, so that data can be read out from the storage medium body built in the plate-shaped storage medium 8 and
Writing is possible.

As shown in FIGS. 2 and 12, the holding mechanism 9 has a plate-shaped storage medium 8 stored in the storage space 2b.
Holds it in place and holds it in the storage space 2
The holding of the plate-shaped storage medium 8 is released by pushing the plate-shaped storage medium 8 housed in b from the insertion port 2a to the inner side of the casing 2, and the plate-shaped storage medium 8 is inserted into the insertion port 2a. It is adapted to be pushed out in the opposite direction from the time of insertion into the storage space 2b. The holding mechanism 9 is the casing 2
A slider 6, which is movably provided in a direction along the insertion direction of the plate-shaped storage medium 8 into the storage space 2b by being guided by a rail portion 3 provided on the side of the stopper 6,
Stopper spring 6a, spring receiver 7, swing bar 10, movable block 11, block biasing member 12
(Here, a coil spring, which may be hereinafter referred to as a "movable block spring") is mounted, and a heart-shaped groove cam 13 (so-called heart cam) formed on the bottom plate 3a of the rail portion 3. ) And the biasing member 14 disposed on the rear side (upper side in FIG. 2) of the rail portion 3.
(Here, a coil spring, which may be hereinafter referred to as a “spring”). In the rail portion 3, a direction along the insertion direction of the plate-shaped storage medium 8 into the storage space 2b is hereinafter referred to as an extension direction, and the side corresponding to the rear side in the insertion direction of the plate-shaped storage medium 8 (Fig. The upper side (2) is referred to as the "back side" and the opposite side (close to the insertion direction insertion port 2a. The lower side in FIG. 2) is referred to as the "front side".

As shown in FIGS. 1 (a) and 1 (b) -FIG.
The rail part 3 includes face plates 2f, 2
A block-shaped main body portion of the slider 5 of the slider unit 4 (hereinafter referred to as “slider body portion 5a” is formed outside one of the pair of side walls 2h and 2i (side wall 2h) that connects g. "May be referred to as"") is stored inside the rail portion 3 and is movable along the extending direction of the rail portion 3. The slider 5 is an integrally molded product made of resin or the like. Slider body 5a
Has a shape such that it can freely and stably move in a direction along the inserting direction of the plate-shaped storage medium 8 into the casing 2 while slidingly contacting the inner surface of the rectangular tubular rail portion 3. 2 to 6
As shown in (a) to (f), the pressure receiving piece 5b projecting from the side portion of the slider 5 (specifically, the slider body 5a) extends on the side wall 2h of the casing 2 along the insertion direction. Existing slit 2j (see FIGS. 3 and 4)
The pressure receiving piece 5 is inserted into and protruded from the casing 2 via the plate-shaped storage medium 8 when the plate-shaped storage medium 8 is inserted into the casing 2.
A pressing wall 8c (see FIG. 2) on the side of the plate-shaped storage medium 8 is brought into contact with b, and the pressure-receiving piece 5b is pressed by the plate-shaped storage medium 8 as the plate-shaped storage medium 8 is inserted into the casing 2. As a result, the slider 5 is pushed into the inner side of the rail portion 3 (upper side of FIG. 2, right side of FIG. 3). Slider 5
Due to the contact of the slider body 5a with the inner surface of the rail 3 and the guide of the pressure receiving piece 5b by the slit 2j of the pressure receiving piece 5b, the slider main body 5a can move smoothly and stably along the rail 3 without rattling. Further, in the present embodiment, as shown in FIG. 4, the protrusion 5c protruding from the slider 5 is provided in the slit 3b formed in the bottom plate 3a of the rail portion 3 along the depth direction of the rail portion 3. Insert the slit 3
The fact that b is guided also contributes to the stable movement of the slider 5.

As shown in FIGS. 2 and 5A to 5D, etc., the slider of the protrusion 5d is provided inside the protrusion 5d protruding from the slider body 5a toward the inner side of the rail portion 3. Spring hole 5e having an opening at the tip protruding from the main body 5a
And a spring 14 (coil spring) attached to the inner side of the rail portion 3 is housed in the spring hole 5e. The protrusion 5d is formed at a position on one side of the slider 5 in the lateral direction (left and right in FIG. 2) so as to secure a gap between the protrusion 5d and the side wall 2h of the casing 2. When it is pushed into the rear side (see FIG. 12 etc.), it is arranged on the side of the groove cam 13 formed on the bottom plate 3a.

The rocking bar 10 is a metal pin, and the base end 10a of which one end in the longitudinal direction is bent at a right angle has a slider body 5a.
Is rotatably inserted into the slider 5, and the tip end side disposed on the inner side of the rail portion 3 from the base end portion 10a is rotated about the base end portion 10a so as to be laterally opposite to the slider 5 (left and right in FIG. 2). It is attached to the slider 5 so as to be swingable. As shown in FIGS. 5A to 5D and the like, the taper groove 5f formed in the slider body 5a is located in the slider body 5a from the insertion position of the base end portion 10a of the swing bar 10 to the inner side of the rail portion 3. The rocking bar 10 is formed in a shape that gradually expands toward, and the rocking bar 10 penetrating the taper groove 5f rocks in the lateral direction of the slider 5 within the range of the taper groove 5f. A cam engaging piece 10b formed by bending the tip of the rocking bar 10 at a substantially right angle is inserted into the groove cam 13, and the groove cam is moved as the slider 5 moves in the extending direction of the rail portion 3. Thirteen
It is designed to be moved along.

As shown in FIG. 2, the groove cam 13 has a first groove 13a extending along the extending direction of the rail portion 3 and a front end of the first groove 13a from the rear side of the rail portion 3 to the front side. A third groove 13c that extends obliquely to the side, and a fourth groove 13d that obliquely extends from the front end of the third groove 13c toward the inner side of the rail portion 3 so as to be gradually separated from the first groove 13a. The fourth groove 13d extends from the rear end of the rail portion 3 toward the front side of the rail portion 3, and the front end of the rail portion 3 is connected to the second groove 13b communicating with the first groove 13a. have.
At the connecting portion P1 between the first groove 13a and the third groove 13c, the first
The step D1 in which the groove 13a side is higher than the third groove 13c side (the depth of the groove is shallow) prevents the cam engagement piece 10b that has entered the third groove 13c side from returning to the first groove 13a side. It has become. A connecting portion P2 between the third groove 13c and the fourth groove 13d, a connecting portion P3 between the fourth groove 13d and the second groove 13b, and a connecting portion P4 between the second groove 13b and the first groove 13a.
Also, similarly to the connecting portion P1 between the first groove 13a and the third groove 13c, the cam engagement piece 10b is prevented from returning by the steps D2 to D4.
The cam engaging piece 10b of the first groove 13a, the third groove 13c,
The fourth groove 13d and the second groove 13b are guided in this order. Note that at least one of the first and second grooves forming the groove cam 13 has a shallower depth on the front side in the guiding direction of the cam engaging piece 10b than on the rear side (for example, an upslope).
It has a shape.

As shown in FIGS. 2 and 12, etc., the swing bar 1
The movable block 11 provided at 0 is slidable in the extending direction of the swing bar 10. FIG. 5 (a)-
(D), as shown in FIG. 7, the movable block 11 has a rectangular parallelepiped block shape, and the swing bar 10 is inserted into a through hole 11 a penetrating the movable block 11. Movable block spring 12 inserted in the swing bar 10
The (coil spring) takes a reaction force to the spring receiver 7 attached to the central portion of the swing bar 10 in the extending direction and biases the movable block 11 toward the tip end side of the swing bar 10.
As shown in FIGS. 5A to 5D and FIG. 8, the spring receiver 7 is provided with a through hole 7a for inserting the rocking bar 10, and the spring receiver 7 is formed by the through hole 7a. While being inserted into the rocking bar 10, the locking piece 7b protruding to the side is engaged with the slider 5 to restrict the movement of the rocking bar 10 toward the base end 10a. The swing bar 10 is arranged on the lower surface side of the pressure receiving piece 5b of the slider 5 (the side facing the rail portion bottom plate 3a), and the spring receiver 7 inserted in this swing bar 10 is provided on the pressure receiving piece 5b. With the lower surface abutting, the locking piece 7b is attached to the pressure receiving piece 5
It is engaged with the rail part 3 from the back side. However, the locking piece 7b is movable in the lateral direction of the slider 5 with respect to the pressure receiving piece 5b, and does not regulate the swing of the swing bar 10.

As shown in FIGS. 12 and 13, when the slider 5 is moved to the inner side of the rail portion 3, the protrusion 5 of the slider 5 is moved.
The d is arranged on the second groove 13b side of the groove cam 13 so as to face the side wall 2h of the casing 2 via the groove cam 13. From the projection 5d of the slider 5 to the first groove 1 of the groove cam 13.
The block contact wall 15 protruding toward the 3a side has a plate shape that is substantially parallel to the bottom plate 3a on which the groove cam 13 is formed.
Of the projection 5d), the block sliding surface is inclined with respect to the extending direction of the rail portion 3 so as to be closer to the first groove 13a side toward the inner side of the rail portion 3 by the end surface of the projection direction. 15a is formed. In this block sliding surface 15a, the cam engaging piece 10b is provided with the fourth groove 13 of the groove cam 13.
The movable block 11 is arranged at a position where the movable block 11 slidable along the swing bar 10 can be brought into contact with the movable block 11 when it is in the position d. It is extended so that it can abut.

In the holding mechanism 9 of the holder 1, the movable block 11 is moved by the urging force of the movable block spring 12 no matter where the cam engaging piece 10b is located in the fourth groove 13d.
The contact state between the block sliding surface 15a and the block sliding surface 15a can be maintained. When the slider 5 is pushed to the inner side of the rail portion 3 with the cam engagement piece 10b in the fourth groove 13d, the fourth groove 13d is formed.
Due to the inclination of the extending direction with respect to the extending direction of the rail portion 3, a displacement force in the lateral direction that causes the swing bar 10 to swing in the second groove 13b direction acts. Since this lateral displacement force also acts on the movable block 11, the movable block 11
Is pushed to the base end side (projection 5d side) of the block contact wall 15 and resists the urging force of the movable block spring 12 along the block sliding surface 15a before the rail part 3 of the block contact wall 15. When the cam 5 is slid to the side, the slider 5 moves along with the movement of the cam engagement piece 10b toward the end of the fourth groove 13d on the rear side of the rail portion 3.
It is pushed to the back side. At this time, the swing bar 10 slides relative to the movable block 11 toward the inner side of the rail portion, so that the slider 5 is pushed toward the inner side of the rail portion.
Since the block sliding surface 15a is formed in a shape that allows the movable block 11 to smoothly slide to the front side of the rail portion 3, the block sliding surface 15a is movable as the swing bar 10 is pushed to the rear side of the rail portion 3. Sliding movement of the block 11 toward the front side of the rail portion 3 along the block sliding surface 15a, and the cam engaging piece 1
The 0b fourth groove 13d is smoothly pushed into the rail portion 3 rear end side. The shape of the block sliding surface on which the movable block 11 is smoothly slid to the front side of the rail portion 3 is a smooth flat surface or a smooth curved surface here. A shape having a step that gradually shifts toward the protruding base end side of the block contact wall 15 as it goes to the front side of the part (however, except the stepped portion, the protruding base of the block contact wall 15 goes toward the front side of the rail part). A flat surface or a curved surface on the end side can also be adopted.

As shown in FIGS. 5 (a) to 5 (d), FIG. 9 and FIG. 12, the stopper 6 is a plate piece formed in a sickle shape and rotatably mounted on a shaft 5g projecting from the slider 5. It is pivotally attached, and by rotation, the slit 2j of the casing side wall 2h
It can appear and disappear in the storage space 2b of the casing 2 via. The spring 6a fixed to the stopper 6 is a leaf spring, and when the stopper 6 is projected into the storage space 2b of the casing 2 by rotation (see the solid line in FIG. 12), the tip of the spring 6a projected from the stopper 6 is The slider 6 is pressed against the wall 5h of the slider 5 and elastically deformed, and urges the stopper 6 in a direction in which the protrusion to the storage space 2b is eliminated.

(Before Insertion of Plate Storage Medium) As shown in phantom lines in FIGS. 2 and 12, before insertion of the plate storage medium 8 into the casing 2, the slider 5 is moved by the biasing force of the spring 14 to the rail. It is arranged on the front side in the extending direction of the portion 3 (this position may be hereinafter referred to as “initial position”). The slider 5 is prevented from slipping out of the rail portion 3 by the protruding wall 3c formed at the front end of the rail portion 3 in the extending direction. Further, in the stopper 6, the tip of the spring 6a protruding from the stopper 6 comes into contact with the wall 5h of the slider 5, so that the spring 6a serves as a rotation stopper.
The rotation keeps the posture in which the casing 2 does not project into the storage space 2b. At this time, it is also possible that the concave portion 6c having a shape recessed from the side surface 6b of the stopper 6 enters into the end portion of the guide wall 3d provided on the side portion of the rail portion 3 on the front side of the rail portion 3 and engages with the guide wall 3d. The posture in which the tip of the stopper 6 does not project into the storage space 2b is maintained. The cam engagement piece 10b of the rocking bar 10 is arranged in the first groove 13a.

When the plate-shaped storage medium 8 is inserted into the casing 2 (when the plate-shaped storage medium is inserted), the pressing wall 8c on the side of the plate-shaped storage medium 8 presses the pressure receiving piece 5b of the slider 5. With the insertion of the plate-shaped storage medium 8 into the inner part of the housing space 2b of the casing 2, the slider 5 is pushed into the inner part of the rail part 3. Thereby, the cam engaging piece 10 of the swing bar 10
b is the first groove 13a and the third groove 13 along the first groove 13a.
It moves toward the connecting portion P1 with c. Also, the rail part 3
With the movement of the slider 5 to the inner side, the stopper 6 moves while being pressed against the guide wall 3d by the side surface 6b thereof, so that the stopper 6 is rotated clockwise in FIG. It comes into surface contact with the inner surface of the guide wall 3d (the inner surface of the rail portion 3). As a result,
The tip of the stopper 6 projects into the storage space 2b through the slit 2j of the side wall 2h of the casing 2 and enters the recess 8d on the side of the plate-shaped storage medium 8. The guide wall 3d extends along the extending direction of the rail portion 3, and the stopper side surface 6b maintains the surface contact state with the inner surface of the guide wall 3d even during the movement of the slider 5 to the inner side of the rail portion 3. While guiding wall 3d
By sliding on the inner surface, the rotation of the stopper 6 is regulated, and the state in which the tip of the stopper 6 is inserted into the recess 8d on the side of the plate-shaped storage medium 8 is maintained. The state where the tip of the stopper 6 has entered the recess 8d on the side of the plate-shaped storage medium 8 is maintained as long as the stopper side surface 6b is in surface contact with the inner surface of the guide wall 3d. Here, the movement of the slider 5 means the movement of the entire slider unit 4.

The plate-shaped storage medium 8 reaches the insertion limit when it comes into contact with the stopper wall (not shown) in the storage space 2b. At this time, the cam engagement piece 10b is connected to the first groove 13a and the third groove 13a.
The connecting portion P1 with the groove 13c is reached. When the pushing force of the plate-shaped storage medium 8 into the casing 2 is released when the plate-shaped storage medium 8 reaches the insertion limit, the slider 5 is pushed back toward the front side of the rail portion 3 by the biasing force of the spring 14. , The cam engagement piece 10b moves from the first groove 13a to the third
Enter into the groove 13c. Then, when the cam engagement piece 10b moving in the third groove 13c reaches and is locked at the connecting portion P2 between the third groove 13c and the fourth groove 13d, the slider 5 moves to the front side of the rail portion 3. Stops and the state shown by the solid line in FIG. 12 is reached.

(Holding of Plate-shaped Storage Medium) In the state shown in FIG. 12 (solid line), the cam engaging piece 10b is pressed against the connecting portion P2 by the biasing force of the spring 14 toward the front side of the rail portion 3. In addition, the movable block 11 urged by the movable block spring 12 toward the tip end side of the swing bar 10 is brought into contact with the block contact wall 15 protruding from the protrusion 5d of the slider 5 and the block Abutment wall 1
Since the movement from the abutting position with 5 to the tip end side of the swing bar 10 is regulated, even if a displacement force to the inner side of the rail portion 3 due to vibration or impact is applied, the rail portion 3 of the fourth groove 13d is formed. The movement of the cam engagement piece 10b toward the rear end is restricted. what if,
The cam engagement piece 10b moves from the connecting portion P2 to the fourth position due to vibration or the like.
Even if the groove 13d slightly moves toward the rear end of the rail portion 3, the cam engaging piece 10b is returned to the connecting portion P2 by the urging force of the spring 14 when the external force such as vibration ceases to act. If the cam engagement piece 10b is in the connecting portion P2,
The slider 5 is held at a position where the stopper side surface 6b comes into surface contact with the inner surface of the guide wall 3d, and the state in which the tip of the stopper 6 is inserted into the recess 8d on the side of the plate-shaped storage medium 8 is maintained, and the plate-shaped storage medium 8 is casing It is held non-pullable from 2. Thus, in this holder 1, the cam engaging piece 1
Since 0b can be reliably held in the connecting portion P2, the holding state in which the plate-shaped storage medium 8 cannot be pulled out by the stopper 6 can be reliably maintained unless a take-out operation described later is performed,
It is possible to reliably prevent the inconvenience that the holding state of the plate-shaped storage medium 8 is inadvertently released by the action of vibration or the like.

(Removal of Plate-Shaped Storage Medium) Although not shown, the plate-shaped storage medium 8 is housed in the casing 2 with a slight protruding portion left in the casing 2 from the insertion port 2a. When the plate-shaped storage medium 8 stored in the storage space 2b of the casing 2 is pushed to the rear side in the insertion direction into the casing 2 by using the protruding portion from the insertion port 2a (removal operation), The pressing force from the linear storage medium 8 to the inner side of the rail portion 3 is transmitted to the slider 5 via the pressure receiving piece 5b,
The cam engagement piece 10b is pressed toward the rear end of the rail portion 3 of the fourth groove 13d. Thereby, the movable block 11
However, the slider 5 laterally displaces while slidingly moving to the front side of the rail portion 3 along the block sliding surface 15a while maintaining the contact state with the block sliding surface 15a by the urging force of the movable block spring 12. The cam engagement piece 1
0b moves toward the end of the fourth groove 13d on the inner side of the rail portion 3, and the slider 5 is pushed inward on the inner side of the rail portion 3 while compressing and contracting the spring 14, and the state shown in FIG. 13 is reached.

(Prevention of Return of Cam Engagement Piece to Third Groove) While the cam engagement piece 10b is in the connecting portion P2 between the third groove 13c and the fourth groove 13d, external force such as impact force acts. The movable block 11 and the block contact wall 1 when the pressing force for taking out the plate-shaped storage medium 8 is applied to the slider 5.
In some cases, the rocking bar 10 is subjected to a force that causes the cam engagement piece 10b to ride up from the connecting portion P2 to the side of the third groove 13c by the action of the reaction force caused by the contact with the rocking member 5. However, in the holding mechanism 9 of the holder 1, the casing 2 of the rail portion 3 is
It has a pressing wall 3e protruding from the inner surface on the side through the groove cam 13 so as to face the block abutting wall 15, and when the cam engaging piece 10b is in the connecting portion P2, the swing bar 10 is provided. The side surface of the movable block 11 (the side surface opposite to the side surface facing the block contact wall 15) that has moved to the distal end side and has contacted the block contact wall 15 (the side surface opposite to the side surface facing the block contact wall 15) is disposed at a position that substantially contacts the pressing wall 3e. Even if the cam engaging piece 10b in the connecting portion P2 tries to move toward the third groove 13c side, the movable block 11 moves due to the contact between the pressing wall 3e and the movable block 11. By being restricted, the cam engaging piece 10b is prevented from riding on the third groove 13c. The side surface of the movable block 11 that is in contact with the block contact wall 15 when the cam engagement piece 10b is in the connecting portion P2 is brought close to the pressing wall 3e with a slight gap or is lightly contacted. When the movable block 11 is pressed against the tip side of the rocking bar 10 by the urging force of the movable block spring 12, or the sliding movement of the movable block 11 along the rocking bar 10 is hindered. It doesn't come.

The pressing wall 3e is formed only on the rear side in the extending direction of the rail portion 3, and in the step of moving the cam engaging piece 10b from the first groove 13a to the connecting portion P2, the cam engaging piece 3e is formed. The end 3f of the pressing wall 3e on the front side of the rail portion is in the middle of moving the 10b along the first groove 13a toward the rear side thereof.
The movable block 11 is brought into contact with the movable block 1 and is engaged with the front end of the rail portion of the pressing wall 3e to be held back.
The rocking bar 10 that has slidably moved with respect to No. 1 is pushed toward the inner side of the rail portion, so that the cam engagement piece 10b is moved to the first groove 13a.
And reaches the connecting portion P1 between the third groove 13c and the third groove 13c. And
The cam engaging piece 10b that has entered the third groove 13c has the connecting portion P.
2, the movable block 11 is separated from the pressing wall 3e by swinging the swing bar 10 toward the second groove 13b, and at the same time, is moved to the tip side of the swing bar 10 by the urging force of the movable block spring 12. The block 11 is pushed into the state shown in FIG.

When the plate-shaped storage medium 8 is pushed in, the cam engagement piece 10b is pushed to the end of the fourth groove 13d on the inner side of the rail portion 3 and then into the second groove 13b. As a result, the cam engagement piece 10 from the second groove 13b to the first groove 13a.
As a result, the slider 5 can be moved to the front side of the rail portion 3 by the urging force of the spring 14 and returned to the initial position, resulting in the state shown in FIG. When the slider 5 is moved to the front side of the rail portion 3, the plate-shaped storage medium 8 is pushed out to the insertion port 2a side by the pressure receiving piece 5b of the slider 5. When the slider 5 returns to the initial position, the holding of the plate-shaped storage medium 8 that cannot be pulled out by the stopper 6 is released, so that the plate-shaped storage medium 8 can be taken out from the casing 2.

In the holder 1, the plate-shaped storage medium 8 is stored and held in the storage space 2b of the casing 2, and is moved to the inner side of the rail portion 3 due to vibration or shock applied to the device in which the holder 1 is mounted. Even if the displacement force of the above acts on the slider 5, the cam engaging piece 10b at the tip of the rocking bar 10 is brought into contact with the fourth groove 1 by the contact between the movable block 11 and the block contact wall 15.
By being restrained by 3d and entering into the second groove 13b, the holding state of the plate-shaped storage medium 8 by the stopper 6 of the holding mechanism 9 can be reliably maintained, and the plate-shaped storage medium 8 is stored in the casing 2. It is possible to reliably prevent the inconvenience of accidentally jumping out of the 2b or being pulled out.

In the structure in which the release of the holding state of the plate-shaped storage medium 8 by the stopper 6 of the holding mechanism 9 is restricted by the abutment of the movable block 11 and the block abutment wall 15, the spring 14 having a small biasing force is adopted. However, the release of the held state can be reliably regulated. The movable block spring 12 may have any biasing force that allows the movable block 11 to be slidably moved along the swing bar 11 to the tip side thereof, and a very small biasing force is sufficient. Is enough. Therefore, the pressing force applied to the plate-shaped storage medium 8 by the operation of taking it out from the casing 2 (the pressing force to the inner side in the insertion direction into the casing 2) is a holding mechanism (for example, a heart cam) which does not have a movable block spring. It is possible to make the size almost the same as or smaller than that of the conventional holding mechanism utilizing the above). If the pressing force applied to the plate-shaped storage medium 8 by the take-out operation can be reduced, the take-out operability of the plate-shaped storage medium 8 from the casing 2 can be improved. In addition, a movable block 11 having a rectangular parallelepiped block shape
Since the corner portions of the movable block 11 are brought into contact with the block contact wall 15 to reduce the sliding resistance at the time of sliding along the block sliding surface 15a of the movable block 11, it is also possible to remove the plate-like member by the take-out operation. This contributes to a reduction in the pressing force applied to the storage medium 8 and an improvement in the operability of taking out the plate-shaped storage medium 8 from the casing 2.

(Another Mode of Movable Block and Spring Receiver) In the movable block 21 shown in FIG. 14, the swing bar 10 is movable via a slit 21a which is a groove opened in a side surface of the movable block 21. It can be housed in a through hole 21b penetrating the central portion of the block 21, and can be provided so as to be fitted into the swing bar 10 from the side portion. The spring receiver 22 shown in FIGS. 15 (a) and 15 (b) has the swing bar 10 and the central portion of the spring receiver 22 via a slit 22 a which is a groove opened in the side surface of the spring receiver 22. It can be housed in a through hole 22b penetrating therethrough, and can be provided so as to be fitted into the swing bar 10 from the side. With such a movable block 21 and spring receiver 22, the swing bar 1
Even after the base end portion 10a of 0 and the cam engagement piece 10b at the tip end are molded, there is an advantage that they can be easily provided by being fitted from the side portion of the swing bar 10. It should be noted that the movable block and the spring receiver are not necessarily limited to the configuration in which the through hole for accommodating the rocking bar penetrates through the central portion, and for example, the engaging piece or the engaging groove formed on the side portion is rocked. Any structure may be adopted as long as it has a mounting structure that is slidable with respect to the rocking bar, such as a structure that is engaged with the motion bar and slidably mounted on the rocking bar. The slit 21a and the through hole 21b of the movable block 21, and the slit 22a and the through hole 22b of the spring receiver 22 all function as a groove fitted into the swing bar from the side.

(Another Mode of Groove Cam) FIGS. 16 (a) to 16 (c)
[Fig. 6] is a view showing another aspect of the groove cam applicable to the holder for a plate-shaped storage medium of the present invention, each showing the vicinity of the back side of the rail portion. In the groove cam 23 illustrated in FIG. 16A, the second groove 23b is deeper than the first groove 23a in the rail portion (see FIG. 1).
6 (a) upper side), and the front end of the rail portion of the third groove 23c that is inclined from the first groove 23a side to the second groove 23b side as it goes to the front side of the rail portion. It is possible to sufficiently secure the extension dimension L along the rail portion extension direction in the fourth groove 23d that communicates between the rail portion and the rail portion rear side end portion of the second groove 23b. Similarly, the groove cam 24 illustrated in FIG. 16B also has a second groove 24b as compared with the first groove 24a.
Is extended toward the rear side of the rail portion (upper side in FIG. 16B), and the first groove 24a is provided toward the front side of the rail portion.
Side inclined from the side to the second groove 24b side
A sufficient extension dimension L along the rail extension direction can be secured in the fourth groove 24d that connects the front end of the rail of the groove 24c and the rear end of the second groove 24b of the rail. . However, while the fourth groove 23d of the groove cam 23 of FIG. 16A is linear, the fourth groove 2d of the groove cam 24 of FIG.
4d has a curved shape. In the groove cams 23 and 24 illustrated in FIGS. 16A and 16B, the extending dimension of the fourth groove along the rail portion extending direction is hardly increased even if the groove cam forming range in the rail portion is hardly expanded. L can be increased,
It is possible to effectively prevent the holding state in which the plate-shaped storage medium cannot be pulled out from the casing by the holding mechanism from being inadvertently released by an impact force or the like.

The groove cam 25 illustrated in FIG. 16 (c) has first and second grooves 25 extending along the extending direction of the rail portion.
a, 25b, and the front end of the third groove 25c and the inner side of the second groove 25, which are inclined from the first groove 25a side to the second groove 25b side from the rail portion rear side to the hand side. Although it has a fourth groove 25d connecting between the side end portion,
The rear end of the third groove 25c has a first groove 25a through a V-shaped connecting groove 25e whose central portion projects toward the front of the rail.
Communicates with the back end of the. The connecting groove 25e is formed by inclining the connecting groove 25e from the first groove 25a side to the second groove 25b side as it goes from the inner side of the rail portion to the closer side.
5e1 has a connecting second groove 25e2 connecting between the front end of the third groove 25c and the front end of the third groove 25c. In this groove cam 25, the block contact wall 15 is provided projecting on the fourth groove 25d, but the block contact wall (imaginary line 15b) is also provided projecting on the connecting second groove 25e2 of the connecting groove 25e. The connecting first groove 25e1 may function as the third groove according to the present invention, and the connecting second groove 25e2 may function as the fourth groove according to the present invention.

As described above, the groove cam according to the present invention is the first
It also includes a configuration in which a communication groove is interposed between the groove and the third groove and between the fourth groove and the second groove. Further, the number of pairs of the third groove and the fourth groove in which the cam engaging piece is moved between the first groove and the second groove is not limited to one pair, and may be plural.

The specific structure of the holder for a plate-shaped storage medium according to the present invention is not limited to the above-mentioned embodiment, and can be changed as appropriate. For example, the movable block provided on the rocking bar is not limited to one, and a plurality of movable blocks may be provided. As the movable block, a resin block such as plastic is advantageous in terms of moldability and cost reduction, but a movable mechanism for holding the plate-shaped storage medium against the action of external force such as vibration or impact force. In order to surely prevent the inconvenience of the holding state being released inadvertently, the movable block is made of a material having a large specific gravity such as metal, and is moved along the swing bar by the action of external force such as vibration or impact force. It is preferable to make it easy to move. In particular, in the holding mechanism having no block biasing member, the movable block made of metal or the like is employed, so that it is possible to reliably prevent accidental holding release. As the block contact wall, the slider 5 is used as described above.
Is not limited to a wall shape protruding from the protruding portion 5d toward the groove cam, and extends, for example, from a side of the protruding wall protruding on the groove cam facing the groove cam, along a block sliding surface to be formed. It is also possible to employ a structure such as a ridge that is projected so as to do so.

[0036]

As described above, according to the holder for plate-shaped storage medium of the present invention, the tip side along the swing bar, such as the impact force acting on the entire holder for plate-shaped storage medium. When an external force for moving the movable block to the inner side of the rail portion acts, the movable block movable along the swing bar contacts the block contact wall to swing the swing bar to the second groove side. Is regulated, the holding state of the plate-shaped storage medium due to the engagement of the stopper of the holding mechanism is not released. Therefore, even if the biasing force of the biasing member that biases the slider toward the front side of the rail is not increased, the holding state of the plate-shaped storage medium by the holding mechanism can be reliably maintained, and the plate-shaped storage medium can be taken out. There is also an advantage that it is not necessary to increase the pressing force of the slider on the inner side of the rail portion, and the workability of taking out can be improved.

[Brief description of drawings]

FIG. 1 is a diagram showing a casing of a holder for a plate-shaped storage medium according to the present invention, in which (a) is a front view and (b) is a side view.

FIG. 2 is an enlarged cross-sectional view showing the vicinity of a rail portion provided on a side portion of a casing.

FIG. 3 is a side sectional view of FIG.

FIG. 4 is a diagram showing a state where the slider unit is housed in the rail portion, and is a sectional view taken along the line AA of FIG. 2 (however, the slider shows a schematic structure).

5A and 5B are views showing a slider unit housed in a rail portion, in which FIG. 5A is a front view, FIG.
(C) is a rear view and (d) is a side view seen from the back side of the rail portion.

FIG. 6 is a view showing the shape of a slider 5, in which (a)
Is a plan view, (b) is a left side view of (a), (c) is a bottom view, (d) is a left side view of (c), (e) is a side view seen from the tip side of the protrusion, ( f) is a side view seen from the side arranged on the front side of the rail portion.

FIG. 7 is a perspective view showing a movable block of a slider unit.

FIG. 8 is a view showing the shape of a spring receiver of the slider unit, FIG.
(B) is a front view.

9A and 9B are views showing a shape of a stopper of a slider unit, wherein FIG. 9A is a side view and FIG. 9B is a front view.

10A and 10B are views showing a plate-shaped storage medium inserted into a holder, wherein FIG. 10A is a view seen from the back side, FIG. 10B is a front view, and FIG. 10C is a view seen from the front side. .

FIG. 11 is a view showing a state in which a plate-shaped storage medium is inserted up to the middle of the casing, and is a cross-sectional view showing the vicinity of the inner part of the casing.

FIG. 12 is a view showing the operation of the holding mechanism according to the present invention, showing a state in which the cam engaging piece at the tip of the swing bar of the slider unit is in the connecting portion between the third groove and the fourth groove.

FIG. 13 is a view showing the operation of the holding mechanism according to the present invention, showing a state in which the cam engaging piece at the tip of the swing bar of the slider unit is in the connecting portion between the fourth groove and the second groove.

FIG. 14 is a perspective view showing another aspect of the movable block of the slider unit.

15A and 15B are perspective views showing another mode of the spring receiver of the slider unit.

16 (a) to 16 (c) are views showing another aspect of the groove cam applicable to the holding mechanism of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Holder for plate-shaped storage medium, 2 ... Casing, 2a ... Insertion port, 2b ... Storage space, 3 ... Rail part, 5 ... Slider,
6 ... Stopper, 8 ... Plate-shaped storage medium, 9 ... Holding mechanism, 10
... rocking bar, 10a ... base end, 10b ... cam engaging piece, 1
DESCRIPTION OF SYMBOLS 1 ... Movable block, 12 ... Block biasing member (movable block spring), 13 ... Groove cam, 13a ... 1st
Groove, 13b ... Second groove, 13c ... Third groove, 13d ... Fourth
Grooves, 14 ... Energizing member (spring), 15 ... Block contact wall, 15a ... Block sliding surface, 15b ... Block contact wall, 21 ... Movable block, 21a ... Slit, 21b ...
Through hole, 23 ... Groove cam, 23a ... First groove, 23b ... Second
Groove, 23c ... third groove, 23d ... fourth groove, 24 ... groove cam,
24a ... 1st groove, 24b ... 2nd groove, 24c ... 3rd groove, 2
4d ... 4th groove, 25 ... groove cam, 25a ... 1st groove, 25b
... second groove, 25c ... third groove, 25d ... fourth groove, 25e1
… Third groove (first connecting groove), 25e2 ... Fourth groove (second connecting groove)
groove).

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP 2000-251024 (JP, A) JP 2001-110515 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G06K 19 / 00 G06K 17/00

Claims (3)

(57) [Claims] 1. A casing having an insertion slot for inserting a plate-shaped storage medium and a storage space for storing the plate-shaped storage medium inserted from the insertion port, and a plate-shaped storage medium stored in the storage space. The plate-shaped storage medium is held so that it cannot be pulled out, and the plate-shaped storage medium stored and held in the storage space is released from the insertion port toward the inner side of the casing to release the holding of the plate-shaped storage medium. In a plate-shaped storage medium holder having a holding mechanism that pushes out a medium in a direction opposite to that when the medium is inserted into the storage space, the holding mechanism is a direction in which the plate-shaped storage medium is inserted into the storage space. A rail portion that extends along the side of the casing along with the rail portion, and a rail portion that is movably provided in the rail portion in the extending direction of the rail portion and is pressed by a plate-shaped storage medium that is inserted into the storage space. Back of the rail The slider pushed in and the tip end side arranged from the base end portion toward the rear side of the rail portion are swingable around the base end portion attached to the slider, and are formed on the rail portion. A rocking bar having a cam engaging piece that is inserted into the groove cam and is moved along the groove cam in a projecting manner at the tip, and the rocking bar is slidable along the extending direction of the rocking bar. A movable block provided on the rail part, an urging member for urging the slider pushed to the rear side of the rail part toward the front side of the rail part by applying a reaction force to the rail part, and the slider to be pushed to the rear side of the rail part. And a stopper that engages with the plate-shaped storage medium to maintain the storage state of the plate-shaped storage medium in the storage space, and the groove cam extends along the rail portion. A first groove and a rail extending along the first groove. A second groove whose front end communicates with the first groove and a second groove inclined from the first groove side toward the second groove from the inner side in the extending direction of the rail part toward the front side. A third groove and a fourth groove extending obliquely from the front end of the third groove toward the rear of the rail toward the second groove, and the end of the first groove toward the rear of the rail. And a rail portion rear side end portion of the third groove, and a rail portion rear side end portion of the fourth groove and the rail portion rear side end portion of the second groove are respectively connected, The cam engaging piece of the swing bar of the slider is guided in the order of the first groove, the third groove, the fourth groove, and the second groove. A block sliding surface that is inclined and extended with respect to the extending direction of the rail portion from the second groove side to the first groove side is such that the cam engaging piece is in the fourth groove of the groove cam. Sometimes, a block contact wall formed at a position where it can contact a movable block that is movable along the swing bar is provided, and when the cam engaging piece is in the fourth groove, the rail is While the movable block slides along the block sliding surface from the tip end side to the extension base end side by pressing the slider toward the rear side of the part, the cam engaging piece is a rail part of the fourth groove. A plate-shaped storage medium holder characterized in that the cam engagement piece can be moved from the fourth groove to the second groove by moving toward the rear end. 2. The plate-like member according to claim 1, wherein the movable block is biased toward the tip end side of the swing bar by a block biasing member that exerts a reaction force on the slider side. Storage medium holder. 3. The movable block is provided so that a groove formed in a side portion of the movable block is fitted into the swing bar from the side portion. The holder for the plate-shaped storage medium described.