JP6221036B2 - Guide wire - Google Patents

Description

  The present invention relates to a document placing apparatus.

In general, in an image recording apparatus such as a copying machine, a support portion that supports a document reading device is attached to a document table via a cantilever hinge mechanism, and the support portion can be opened and closed during maintenance. ing.
As the cantilever hinge mechanism, as shown in FIGS. 32 and 33, a base side member A and a support portion side member C to which a load of the document reading device B is applied are pivotally connected around an axis D. There is a base side member A provided with a cam E and a cam action portion F, a support portion side member C provided with a spring receiving portion G, and a compression coil spring H interposed between the cam E and the spring receiving portion G. .

This cantilever hinge mechanism utilizes the force by which the compression coil spring H expands when the distance between the cam E and the spring receiving portion G changes when the support member side member C is rotated about the axis D. And although the support part side member C can be lifted easily, there existed the following problems.
-A load due to pressure contact / sliding was applied to the sliding surface between the cam E and the cam action portion F, and there was a problem in durability such as poor lubrication of the sliding surface.
• Abnormal noise was likely to occur due to sliding between the cam E and the cam action part F.
-Since the compression coil spring H is easy to "sag" and the "sagging" occurs, the urging force increase adjustment cannot be performed, so the entire hinge mechanism had to be replaced.

Therefore, a hinge mechanism using a mainspring spring instead of a coil spring has been proposed.
For example, in Patent Document 1, a lower unit case and an upper unit case are mounted via a hinge part so as to be vertically openable and closable. One guide member is formed in a convex curve shape, the open / close coupling body is movably connected to the upper and lower guide members, and the case incorporating the mainspring spring is fixed near the hinge portion of the lower unit case, and the mainspring spring The base end of the cable is fixed to the case, the string body is connected to the free end, the string body is connected to the open / close connection body, and the spring force is applied to the open / close connection body toward the hinge portion by applying a force in the winding direction to the mainspring spring. An opening / closing device provided with is described.
However, in this opening / closing device, since the path of the string body is not stable, the opening / closing connecting body is not smoothly moved, and there is a concern that smooth rotation of the lower unit case and the upper unit case is hindered.

JP 2011-227480 A

  SUMMARY OF THE INVENTION An object of the present invention is to provide a document placing apparatus that can be easily opened and closed even when a heavy object is supported, has high durability, and has a smooth rotation operation.

  An original placement apparatus according to aspect 1 of the present invention includes an original table, an original cover that is rotatable about the first axis of the original table with respect to the original table, and is fixed to the original cover. A document placing apparatus comprising a mainspring spring, a first pulley rotatably fixed to a central axis of the mainspring spring, and a rope wound around the first pulley, wherein the document table and the document The rope rotates the first pulley against the urging force of the mainspring spring when the angle between the lid and the lid is reduced about the first axis.

  Aspect 2 of the present invention is the document placing apparatus according to aspect 1, wherein the second pulley is fixed to the document table so as to be rotatable around a second axis at a position different from the first axis. And the rope engages with the second pulley when the angle between the document table and the document lid is reduced about the first axis, and resists the biasing force of the mainspring spring. 1 pulley is rotated, It is characterized by the above-mentioned.

The document placement device according to the third aspect of the present invention includes a document table, an intermediate body that is rotatable about the first axis of the document table with respect to the document table, An original cover that is rotatable about a third axis at a position different from the first axis, a mainspring spring fixed to the intermediate body, and a first pulley rotatably fixed to the central axis of the mainspring spring And a rope wound around the first pulley, and a third pulley that is rotatably fixed to the document cover and engages with the rope, the angle between the document table and the intermediate body being When the first shaft is reduced around the first axis, the rope rotates the first pulley against the biasing force of the mainspring spring, and the angle between the intermediate body and the document cover is adjusted to the third axis. when the magnitude was comb around, to pull the rope third pulley against the biasing force of the spiral spring It is characterized in.

  Aspect 4 of the present invention is the document placing apparatus according to aspect 3, wherein the gap between the document table and the document lid can be changed in parallel according to the thickness of the document. It is.

According to a fifth aspect of the present invention, there is provided the original placing device according to the fourth aspect, wherein the second pulley is fixed to the original table so as to be rotatable around the second axis at a position different from the first axis. the provided, rope, when small angle between the platen and the intermediate about a first axis, and rather the size of the angle between the intermediate and the document lid about a third axis In this case, the first pulley is rotated against the urging force of the mainspring spring by engaging with the second pulley.

  Aspect 6 of the present invention is the document placing apparatus according to aspect 5, wherein the second pulley includes a second rope engaging groove that engages with the rope, and both sides of the second rope engaging groove. The third pulley has a third rope engaging groove that engages with the rope, and a third pulley formed on both sides of the third rope engaging groove. And the second rope engaging groove and the third hook part or the second hook part and the third rope engaging groove rotate in the same plane. It is.

  Aspect 7 of the present invention is the document placing apparatus according to any one of aspects 1 to 6, wherein the first pulley has a spiral groove that engages with the rope. It is what.

Aspect 8 of the present invention is the document placing apparatus according to any one of aspects 1 to 7, wherein a ratchet gear fixed to the opposite side of the first pulley on the central axis of the mainspring spring, and the ratchet A stopper lever for restricting the rotation of the gear is provided.

  A document placing apparatus according to aspect 1 includes a document table, a document cover that is rotatable with respect to the document table about the first axis of the document table, a mainspring spring fixed to the document cover, A first pulley that is rotatably fixed to the central axis of the mainspring spring and a rope wound around the first pulley are provided. When the angle between the document table and the document cover is reduced with the first axis as the center, the rope rotates the first pulley against the urging force of the mainspring spring. In the case where the angle between the lid body and the first axis is reduced, the first pulley pulls the rope and deforms the mainspring spring. Thereby, the trajectory of the rope is stabilized and the document cover can be closed smoothly.

On the other hand, when the document cover is opened, the document cover can be easily opened even when a load is applied to the document cover by using the restoring force of the mainspring spring. Further, since the mainspring spring and the rotation of the first pulley are used, the durability is higher than that of the conventional rotating coil spring and cam, and noise is hardly generated.

  The document placing apparatus according to aspect 2 includes a second pulley fixed to the document table so as to be rotatable about a second axis at a position different from the first axis. When the angle between the document table and the document cover is reduced with the first axis as the center, the rope engages with the second pulley to resist the biasing force of the mainspring spring. The rotation of the pulley is simplified, the construction of the hinge device itself is simplified, the rope trajectory is further stabilized, and the document table and document cover can be opened and closed more smoothly. By utilizing the rotation, it is possible to further improve durability and further prevent the generation of abnormal noise.

  In the document placing device of aspect 3, the document table, an intermediate body that can rotate with respect to the document table about the first axis of the document table, and the first axis with respect to the intermediate body are: A document cover that can be rotated about a third axis at a different position, a mainspring spring fixed to the intermediate body, a first pulley that is rotatably fixed to the central axis of the mainspring spring, and the first And a third pulley that is rotatably fixed to the document cover and engages with the rope.

When the angle between the document table and the intermediate body is reduced with the first axis as the center, the rope rotates the first pulley against the biasing force of the mainspring spring, and the intermediate body and the document cover body angle when was large comb about the third axis between, pull the rope third pulley against the biasing force of the spiral spring. For this reason, when the document cover is closed, the first pulley pulls the rope and deforms the mainspring spring, so that the trajectory of the rope is stabilized and the document cover can be closed smoothly.

On the other hand, when the document cover is opened, the document cover can be easily opened even when a load is applied to the document cover by using the restoring force of the mainspring spring. Further, since the mainspring spring and the rotation of the first pulley are used, the durability is higher than that of the conventional rotating coil spring and cam, and noise is hardly generated. Further, even when the thickness of the document changes due to the rotation of the document cover with respect to the intermediate body, the document can be successfully sandwiched between the document table and the document cover.

  In the document placing apparatus of aspect 4, since the gap between the document table and the document lid can be changed in parallel according to the thickness of the document, the document can be moved even when the thickness of the document changes. And the document cover.

The document placing apparatus of aspect 5 includes a second pulley fixed to the document table so as to be rotatable about a second axis at a position different from the first axis. The rope, when small angle between the platen and the intermediate about a first axis, and the magnitude of the angle between the intermediate and the document lid about a third axis Kushida Sometimes, the first pulley is rotated against the urging force of the mainspring spring by engaging with the second pulley. For this reason, the configuration of the hinge device itself is simplified, the trajectory of the rope is further stabilized, and the document table and the document lid can be opened and closed more smoothly. The rotation of the second pulley is used. Thus, the durability can be further improved and the occurrence of abnormal noise can be further prevented.

  In the document placing device according to aspect 6, the second pulley includes a second rope engaging groove that engages with the rope, and second flanges formed on both sides of the second rope engaging groove. The third pulley has a third rope engaging groove that engages with the rope, and third flanges formed on both sides of the third rope engaging groove. Since the second rope engaging groove and the third hook portion or the second hook portion and the third rope engaging groove rotate in the same plane, the length of the mechanism when opening and closing the document lid is increased. Therefore, the document placing apparatus itself can be designed compactly.

  In the document placing apparatus of aspect 7, the first pulley is formed with a spiral groove that engages with the rope, so that the trajectory of the rope is further stabilized and the document lid is opened and closed more smoothly. be able to.

  The document placing apparatus according to aspect 8 includes a ratchet gear fixed to the opposite side of the first pulley on the central axis of the mainspring spring, and a stopper lever for restricting the rotation of the ratchet gear. According to this, it is possible to easily adjust the spring force of the mainspring spring, and it is possible to easily ensure stabilization of the trajectory of the rope.

FIG. 1 is a perspective view showing a hinge device according to the first embodiment of the present invention. FIG. 2 is a left sectional view showing the hinge device according to the first embodiment of the present invention. FIG. 3 is a partially broken perspective view showing the hinge device according to the first embodiment of the present invention. FIG. 4A is a partially broken perspective view when the second housing is rotated in the hinge device according to the first embodiment of the present invention, and FIG. 4B is a view in FIG. It is an enlarged view which shows a 1st pulley. FIG. 5A is a perspective view showing a state in which the second housing is fully opened in the hinge device according to the first embodiment of the present invention, and FIG. 5B is a view in the state of FIG. FIG. 6A is a perspective view showing a state in the middle of rotating the second housing in the hinge device according to the first embodiment of the present invention, and FIG. 6B is a perspective view of FIG. It is a left sectional view in the state. FIG. 7A is a perspective view showing a state in the middle of rotating the second housing in the hinge device according to the first embodiment of the present invention, and FIG. It is a left sectional view in the state. FIG. 8 is a right side view of the hinge device according to the first embodiment of the present invention, showing a ratchet gear. FIG. 9 is a perspective view showing a hinge device according to the second embodiment of the present invention. FIG. 10 is a perspective view when the hinge device according to the second embodiment of the present invention is viewed from the rear. FIG. 11 is a left sectional view showing a hinge device according to the second embodiment of the present invention. FIG. 12 is a partially broken perspective view showing a hinge device according to the second embodiment of the present invention. FIG. 13: is a principal part rear view which shows the hinge apparatus based on 2nd Embodiment of this invention. FIG. 14 is a perspective view showing a state in which the second housing is fully opened in the hinge device according to the second embodiment of the present invention, and FIG. 14 (b) is a left sectional view in the state of FIG. 14 (a). It is. FIG. 15 is a left sectional view showing a state in which the third housing is rotated with respect to the second housing in the hinge device according to the second embodiment of the present invention. FIG. 16A is a perspective view showing a document placing apparatus according to the third embodiment of the present invention, and FIG. 16B is a left side showing the document placing apparatus according to the third embodiment of the present invention. It is sectional drawing. FIG. 17 is a perspective view of a main part showing a state in which the document cover is completely closed in the document placing apparatus according to the third embodiment of the present invention. 18 is a left sectional view of FIG. 19 is a partially broken perspective view of FIG. FIG. 20 (a) is a partially broken perspective view when the document cover is rotated in the document placing apparatus according to the third embodiment of the present invention, and FIG. 20 (b) is FIG. 20 (a). It is an enlarged view which shows the 1st pulley in. FIG. 21A is a perspective view showing a state where the document cover is fully opened in the document placing apparatus according to the third embodiment of the present invention, and FIG. 21B is a state shown in FIG. FIG. FIG. 22A is a perspective view showing a state in the middle of rotating the document cover in the document placing apparatus according to the third embodiment of the present invention, and FIG. It is a left side sectional view in the state of). FIG. 23 is a right side view of the document placing apparatus according to the third embodiment of the present invention, showing a ratchet gear. FIG. 24A is a perspective view showing a document placing apparatus according to the fourth embodiment of the present invention, and FIG. 24B is a left side showing the document placing apparatus according to the fourth embodiment of the present invention. It is sectional drawing. FIG. 25A is a perspective view of a main part showing a state in which the document cover is completely closed in the document placing apparatus according to the fourth embodiment of the present invention, and FIG. It is a left sectional view in the state of (a). FIG. 26A is a perspective view showing a state where the document cover is fully opened in the document placing apparatus according to the fourth embodiment of the present invention, and FIG. 26B is the state shown in FIG. FIG. FIG. 27A is a perspective view showing a state in the middle of rotating the document lid in the document placing apparatus according to the fourth embodiment of the present invention, and FIG. It is a left side sectional view in the state of). FIG. 28 is a partially broken perspective view showing a document placing apparatus according to the fourth embodiment of the present invention. FIG. 29 is a main part rear view showing the document placing apparatus according to the fourth embodiment of the present invention. FIG. 30A is a perspective view of a principal part showing a state in which a thick document is sandwiched between a document table and a document lid in the document placing apparatus according to the fourth embodiment of the present invention. FIG. 30B is a left side sectional view in the state of FIG. FIG. 31A is a perspective view of a principal part showing a state in which a thin document is sandwiched between a document table and a document cover in the document placing apparatus according to the fourth embodiment of the present invention. b) is a left side sectional view in the state of FIG. It is a schematic diagram in the closed state of the conventional cantilever hinge mechanism. It is a schematic diagram in the open state of the conventional cantilever hinge mechanism.

Hereinafter, the present invention will be described based on embodiments shown in the drawings.
[First embodiment]
Below, the hinge apparatus which concerns on 1st Embodiment of this invention is demonstrated.
As shown in FIG. 1, the hinge apparatus 100 of this embodiment is provided with the 1st housing | casing 1 and the 2nd housing | casing 2 connected with the 1st housing | casing 1 so that opening and closing was possible. The second casing 2 is rotatable around a first axis (shaft 6) provided in the first casing 1.

First, the first housing 1 will be described.
As shown in FIGS. 2 and 3, the first housing 1 includes a rectangular fixed plate 4 that forms a bottom portion, and a pair of standing uprights standing on both side edges of the rear end portion of the fixed plate 4. It has a piece 5. A receiving piece 12 projects rearward from the upper part of the rear edge of the upright piece 5. As shown in FIG. 3, the first shaft (shaft 6) described above is installed between the pair of left and right upright pieces 5, and the upright piece 5 has an arc shape centered on the first axis (shaft 6). The first guide hole 7 is formed.

  Further, as shown in FIG. 3, an end pulley 8 is fixed to the shaft 6 between the pair of upright pieces 5. As shown in FIG. 4A, a stopper pin 9 that is inserted through the first guide hole 7 is provided on the side surface of the end pulley 8. The stopper pin 9 may be provided integrally with the end pulley 8 or may be provided separately. When the second housing 2 is rotated, the stopper pin 9 slides and engages with a second guide hole 17 of the second housing 2 described later, thereby engaging the second housing 2. Is restricted (see FIG. 5A).

Further, as shown in FIG. 3, a second shaft (guide pulley shaft 10) is installed between the pair of upright pieces 5 of the first housing 1 above the end pulley 8, and the second shaft ( A second pulley (guide pulley 11) is attached to the outer periphery of the guide pulley shaft 10). The second pulley (guide pulley 11) is fixed to be rotatable about a second shaft (guide pulley shaft 10).

As shown in FIG. 3, the second pulley (guide pulley 11) has a concave second rope engaging groove 11a for engaging a rope 25 described later, and the rope engagement. Second flanges 11b are provided on both sides of the joint groove 11a. Thereby, the fixed state of the rope 25 with respect to the second pulley (guide pulley 11) is stabilized. However, the second rope engaging groove 11a may be omitted for the purpose of simplifying the configuration. That is, a second pulley (guide pulley) having a flat surface may be used.

In the present embodiment, the second pulley (guide pulley 11) is used as a means for engaging the rope 25, but this may be changed to a rib or a roller. That is, you may employ | adopt the structure which winds the rope 25 around a rib or a roller.

  Further, in the present embodiment, the second pulley (guide pulley 11) is provided in the first housing 1, but for example, another housing (not shown) attached to the upright piece 5 of the first housing 1. ) May be provided with a second pulley (guide pulley 11).

Next, the second housing 2 will be described in detail.
As shown in FIG. 1, the second housing 2 is formed by providing side walls 14 that are parallel to each other downward from both side edges of the upper plate 13. A flange 14 a projects at a right angle from the lower end of the side wall 14. And the front part and the rear part of the lower end of the left and right side walls 14 are respectively connected by a reinforcing bar 15 (see FIG. 3).

  As shown in FIG. 1, a connecting piece 16 protrudes rearward from the lower end of the rear edge of the side wall 14, and both ends of the first shaft (shaft 6) described above are connected to the pair of left and right connecting pieces 16. It penetrates. Thereby, the 1st housing | casing 1 and the 2nd housing | casing 2 are connected so that opening and closing is possible centering | focusing on the 1st axis | shaft (shaft 6) (refer Fig.5 (a)).

  As shown in FIG. 1, the connecting piece 16 is formed with an arc-shaped second guide hole 17 centering on the shaft 6. The second guide hole 17 communicates with the first guide hole 7 described above, and the stopper pin 9 of the end pulley 8 is slidably engaged with the second guide hole 17. That is, as shown in FIG. 5A, when the second casing 2 rotates about the first axis (shaft 6), the stopper pin 9 is engaged with the edge of the second guide hole 17. As a result, the second casing 2 is fixed in an open state.

  As shown in FIG. 3, a mainspring shaft 18 is installed between the left and right side walls 14, and a mainspring case 19 is rotatably attached to the mainspring shaft 18. A mainspring spring (not shown) is accommodated in the mainspring case 19. The center side end (base end) of the mainspring spring is fixed to the mainspring shaft 18, and the outer peripheral side end (free end) of the mainspring spring is fixed to the mainspring case 19. In this embodiment, the mainspring method is used, but this may be changed to the torsion coil method.

  On the side surface of the mainspring case 19, a first pulley (winding pulley 22) that is rotatably fixed via the center axis of the mainspring spring, that is, the mainspring shaft 18 is provided.

  A small-diameter portion 23 is integrally formed on the side surface of the first pulley (winding pulley 22), one end side of the rope 25 is wound around the small-diameter portion 23, and the tip of the rope 25 is wound around the first pulley (winding pulley 22). It is fixed. That is, the rope 25 is applied with a force in the winding direction by the urging force of the mainspring spring.

  As shown in FIG. 3, the other end of the rope 25 is engaged with the outer periphery of the end pulley 8 from the rear, and the tip thereof is fixed to the rope attachment portion 8 a of the end pulley 8. The second pulley (guide pulley 11) is installed at a position that can be engaged with the rope 25 in front of the track of the rope 25.

  As shown in FIG. 4B, a spiral groove 23 a that engages with the rope 25 is provided in the small diameter portion 23 of the first pulley (winding pulley 22). According to this, since the rope 25 is fixed to the first pulley (winding pulley 22), the trajectory of the rope 25 is further stabilized, and the first housing 1 and the second housing 2 are further connected. It can be opened and closed smoothly.

  In addition, the groove 23a in the first pulley (small diameter portion 23) described above may be omitted. In this case, the configuration of the first pulley (small diameter portion 23) is simplified, and the manufacturing cost can be reduced.

Then, for example, the first housing changes from the state shown in FIGS. 5A and 5B to the state shown in FIGS. 7A and 7B through the states shown in FIGS. 6A and 6B. When the angle between the body 1 and the second housing 2 is reduced around the first axis (shaft 6), that is, when the second housing 2 is closed around the shaft 6, the mainspring case 19 And the first pulley (the hoisting pulley 22) moves to the front lower side of the first housing 1, and the second pulley is attached to the rope 25 laid between the first pulley (the hoisting pulley 22) and the end pulley 8. The (guide pulley 11) is engaged from below, and the track of the rope 25 becomes longer. As a result, one end of the rope 25 is pulled against the urging force of the mainspring spring, and the first pulley (winding pulley 22) and the mainspring case 19 are rotated.

That is, when the angle between the first casing 1 and the second casing 2 is reduced with the first axis (shaft 6) as the center, the first pulley (winding pulley 22) is connected to the rope 25. Since the mainspring is deformed by pulling the spring 25, the trajectory of the rope 25 is stabilized, and the second casing 2 can be smoothly closed with respect to the first casing 1.

As shown in FIGS. 1 and 2, when the second housing 2 is completely closed, the member X attached to the second housing 2 is provided integrally with the first housing 1. In a state of being superimposed on the member Y, the second housing 2 remains in that position. At this time, as shown in FIG. 1, the stopper pin 9 is engaged with the lower end of the first guide hole 7 (not shown) and is engaged with the upper end portion or the intermediate portion of the second guide hole 17.

On the other hand, the first casing 1 changes from the state shown in FIGS. 7A and 7B to the state shown in FIGS. 5A and 5B through the states shown in FIGS. When the angle between the first casing 2 and the second casing 2 is increased around the first axis (shaft 6), that is, when the second casing 2 is pushed up, the restoring force of the mainspring spring is used. Even when a load is applied to the first casing 1 or the second casing 2, the second casing 2 is moved relative to the first casing 1 by the restoring force of the mainspring spring. It can be opened easily. Further, since the mainspring spring and the rotation of the first pulley (winding pulley 22) are used, the durability is higher than that of the conventional rotating coil spring and cam, and noise is generated. hard.

Then, as shown in FIG. 5A, when the second housing 2 is opened to a predetermined angle and reaches the opening limit, the stopper pin 9 is engaged with the lower end of the second guide hole 17, and the protrusion 24 is The second casing 2 stops rotating when it hits the receiving piece 12 of the first casing 1.

Further, as described above, the hinge device 100 of the present embodiment has the first housing 1 provided with the second shaft (guide pulley shaft 10) at a position different from the first shaft (shaft 6). A second pulley (guide pulley 11) that is rotatably fixed as a center is provided (see FIG. 3).

At this time, when the angle between the first casing 1 and the second casing 2 is reduced from the state shown in FIG. 5 to the state shown in FIG. 7 with the first axis (shaft 6) as the center. That is, when the second housing 2 is closed with the shaft 6 as the center, the rope 25 is engaged with the second pulley (guide pulley 11) to resist the urging force of the mainspring spring. Since the (pulling up pulley 22) is rotated, the configuration of the hinge device 100 itself is simplified, and the trajectory of the rope 25 is further stabilized, so that the second housing 2 is made more stable with respect to the first housing 1. It can be opened and closed smoothly.
Then, by using the rotation of the second pulley (guide pulley 11), the durability can be further improved and the occurrence of abnormal noise can be further prevented.

Further, as shown in FIG. 8, a ratchet gear 20 is provided on the side wall 14 on the opposite side of the above-described first pulley (winding pulley 22) at one end of the center axis (spring shaft 18) of the mainspring spring. It is fixed. A stopper lever 21 is provided below the ratchet gear 20. And the front-end | tip nail | claw 21a of the stopper lever 21 selectively engages with the tooth | gear of the ratchet gear 20, and the rotation is controlled.

  The stopper lever 21 is pivotally attached to the side wall 14 so that the tip claw 21a contacts and separates from the ratchet gear 20, and is biased in a direction in which the tip claw 21a approaches the ratchet gear 20 by a coil spring 21b. Accordingly, by rotating the mainspring shaft 18 with a tool and changing the engagement position of the ratchet gear 20 by the stopper lever 21, the position of the center side end portion of the mainspring spring can be changed. In addition, it is convenient to form a tool hooking groove 18 a on one end face of the mainspring shaft 18.

Thus, in the hinge device 100 of the present embodiment, the ratchet gear 20 fixed to the opposite side of the first pulley (winding pulley 22) on the central axis (spring shaft 18) of the mainspring spring, and the ratchet gear thereof Since the stopper lever 21 that restricts the rotation of the spring 20 is provided, the spring force of the mainspring spring can be easily adjusted, and the stabilization of the trajectory of the rope 25 can be easily ensured. .

Such ratchet gear 20 and stopper lever 21 may be omitted. In this case, the number of parts is reduced, and the manufacturing cost can be reduced.

[Second Embodiment]
Below, the hinge apparatus which concerns on 2nd Embodiment of this invention is demonstrated. Here, it demonstrates centering on a different point from 1st Embodiment mentioned above.

  As shown in FIG. 9, the hinge device 200 according to the second embodiment includes the third housing 3 that can rotate around the third shaft (shaft 29) with respect to the second housing 2 described above. doing. More specifically, the third shaft (shaft 29) passes through the upper front corner portion of the side wall 14 of the second housing 2 and the outer wall 28 of the third housing 3, and the second housing 2 The third casing 3 is coupled to be rotatable about the third axis (shaft 29).

  The third housing 3 includes a top plate 27 and outer walls 28 that extend downward from both side edges of the top plate 27. At the lower end of the outer side wall 28, flanges 30 project at right angles.

  As shown in FIGS. 9 and 10, long holes 32 that can engage with both ends of the mainspring shaft 18 are formed in the left and right outer walls 28. The long hole 32 has an arc shape centered on the third axis (shaft 29). When the third casing 3 rotates about the third axis (shaft 29), both end portions of the mainspring shaft 18 are formed. Slides along the long hole 32. When the end portion of the mainspring shaft 18 is engaged with the end edge of the long hole 32, the rotation of the third housing 3 with respect to the second housing 2 is stopped.

Furthermore, as shown in FIG. 10, an arc-shaped hole 34 is provided in one outer wall 28 of the third housing 3. When the third casing 3 rotates about the third axis (shaft 29), the stopper screw 33 provided on the outer surface of the side wall 14 of the second casing 2 is formed into an arc-shaped hole. The rotation of the third housing 3 relative to the second housing 2 is also stopped when the stopper screw 33 engages with the arcuate hole 34. .

  As shown in FIG. 11, a tension pulley shaft 35 extending inward of the second housing 2 is projected on the inner surface of the other outer wall 28 in parallel with the second shaft (guide pulley shaft 10). A third pulley (tension pulley 31) is rotatably attached to the outer periphery of the tension pulley shaft 35. The third pulley (tension pulley 31) is rotatably fixed to the third housing 3 and is engaged with the rope 25 from below. Further, another guide pulley 26 is rotatably attached to the side wall 14 of the second housing 2. The other guide pulley 26 is installed on the lower front side of the small diameter portion 23 of the first pulley (winding pulley 22), and the rope 25 is engaged from below.

  As shown in FIG. 12, the tension pulley shaft 35 that is the rotation center axis of the third pulley (tension pulley 31) and the guide pulley that is the rotation center axis of the second pulley (guide pulley 11). A shaft 10, a third shaft 29 that is a rotation center axis of the second housing 2 and the third housing 3, and a rotation center axis of the first housing 1 and the second housing 2. The first shaft (shaft 6) that is the rotation center axis of the end pulley 8 and the mainspring shaft 18 that is the rotation center axis of the first pulley (winding pulley 22) are all arranged in parallel. .

  As shown in FIG. 13, the third pulley (tension pulley 31) includes a third engagement groove 31 a that engages with the rope 25, and third flange portions provided on both sides of the engagement groove 31 a. 31b. Thereby, the fixed state of the rope 25 with respect to the third pulley (tension pulley 31) is stabilized.

  Further, as shown in FIG. 13, in the second pulley (guide pulley 11) and the third pulley (tension pulley 31) of the present embodiment, the second rope engaging groove 11a and the third flange 31b. Alternatively, the second flange portion 11b and the third rope engaging groove 31a are preferably configured to rotate in the same plane. According to this, the length of the mechanism at the time of opening and closing the 1st housing | casing 1, the 2nd housing | casing 2, and the 3rd housing | casing 3 can be shortened, and hinge apparatus 200 itself is designed compactly. be able to.

Here, from the state in which the second casing 2 as shown in FIGS. 14A and 14B is opened, the second casing 2 and the third casing 3 as shown in FIG. the angle between the, when there was large comb third axis (shaft 29) as the center, i.e., when the third housing 3 is rotated downward with respect to the second housing 2, the As the third pulley (tension pulley 31) moves rearward, the rope 25 is pulled against the urging force of the mainspring spring.

At this time, as shown in FIG. 15, the third housing 3 rotates around the third axis (shaft 29) while the position is fixed in a state where the second housing 2 is opened, The lower surface K1 of the third housing 3 and the lower surface K2 of the first housing 1 are parallel to each other at a predetermined interval. That is, in the present embodiment, when the third casing 3 rotates around the third axis (shaft 29), for example, the member Z attached to the third casing 3 and the first casing A member (not shown) having a desired thickness can be successfully sandwiched between the member Y and the member Y attached to 1.

  In addition, when the second casing 2 and the third casing 3 are closed together, the first pulley (winding pulley 22) pulls the rope 25 and deforms the mainspring spring. The orbit is stable and the second casing 3 and the third casing 3 can be closed smoothly.

On the other hand, when the second casing 2 and the third casing 3 are opened, that is, when the third casing 3 is rotated from the state shown in FIG. 15 to the state shown in FIG. Even if a load is applied to the third casing 3 using the restoring force of the spring, the third casing 3 can be easily opened. Further, since the mainspring spring and the rotation of the first pulley (winding pulley 22) are used, the durability is higher than that of the conventional rotating coil spring and cam, and noise is generated. hard.

  In the present embodiment, as in the first embodiment, the first casing 1 is centered on the second shaft (guide pulley shaft 10) at a position different from the first shaft (shaft 6). A second pulley (guide pulley 11) fixed rotatably is provided.

The rope 25 is formed when the angle between the first casing 1 and the second casing 2 is reduced with the first axis (shaft 6) as the center, and when the second casing 2 and the third casing 3 against the angle between the housing 3 when was large comb about the third axis (shaft 29), the biasing force of the spiral spring by engaging the second pulley (guide pulley 11) To rotate the first pulley (winding pulley 22). For this reason, the configuration of the hinge device 200 itself is simplified, the trajectory of the rope 25 is further stabilized, the first housing 1 and the second housing 2, and the second housing 2 and the third housing. The housing 3 can be opened and closed more smoothly, and by using the rotation of the second pulley (guide pulley 11), the durability can be further improved and the occurrence of abnormal noise can be further prevented.

[Third embodiment]
In the following, a document placing apparatus according to the third embodiment of the present invention will be described.
As shown in FIGS. 16A and 16B, the document placing apparatus 300 according to the present embodiment rotates around a document table 350 and a first shaft (shaft 306) provided on the document table 350. An original cover 360 that is fixed in a possible manner is provided.

  First, the document table 350 will be described below. As shown in FIGS. 17 and 18, the document table 350 includes a flat plate member 352 on which a document is placed, and a first housing 301 provided integrally with the table member 352. .

  The first housing 301 in the present embodiment has the same configuration as the first housing 1 in the first embodiment described above. That is, as shown in FIGS. 19 and 20, the first housing 301 is erected on the rectangular fixing plate 304 that forms the bottom portion that contacts the base member 352, and both side edges of the rear end portion of the fixing plate 304. A pair of upright pieces 305 parallel to each other. A receiving piece 312 protrudes rearward from the upper part of the rear end edge of the standing piece 305. The above-described first shaft (shaft 306) is installed between the pair of upright pieces 305, and the upright piece 305 is formed with an arc-shaped first guide hole 307 centered on the first axis (shaft 306). Has been.

  Further, an end pulley 308 is fixed to the first shaft (shaft 306) between the left and right standing pieces 305 (see FIG. 19). As shown in FIG. 20, a stopper pin 309 inserted through the first guide hole 307 is integrally provided on the side surface of the end pulley 308. When the document cover 360 is rotated, the stopper pin 309 slides and engages with a second guide hole 317 of the document cover 360 (second housing 302), which will be described later. The rotation of the body 360 is restricted.

Further, as shown in FIG. 19, a second shaft (guide pulley shaft 310) is installed between the pair of upright pieces 305 of the first housing 301 above the end pulley 308, and the second shaft A second pulley (guide pulley 311) is attached to the outer periphery of (guide pulley shaft 310). The second pulley (guide pulley 311) is fixed so as to be rotatable about the second shaft (guide pulley shaft 310). The second pulley (guide pulley 311) has a second rope engaging groove 311a with which the rope 325 is engaged, and the second flange 311b on both sides of the engaging groove 311a. Is provided. Thereby, the fixed state of the rope 325 with respect to the 2nd pulley (guide pulley 311) comes to be stabilized.

In the present embodiment, the second pulley (guide pulley 311) is used as a means for engaging the rope 325, but this may be changed to a rib or a roller. That is, you may employ | adopt the structure which winds a rope around a rib or a roller.

In the present embodiment, the second pulley (guide pulley 311) is provided in the first housing 301. However, for example, another housing (not shown) attached to the upright piece 305 of the first housing 1 is used. ) May be provided with a second pulley (guide pulley 311).

  Next, the document cover 360 will be described. As shown in FIGS. 17 and 18, the document cover 360 is fixed to the second housing 302 so as to be rotatable about the first shaft (shaft 306) of the first housing 301 described above. And a lid member 362 attached to the second casing 302.

The second casing 302 in the present embodiment has the same configuration as the second casing 2 in the first embodiment described above. That is, as shown in FIG. 17, the second housing 302 is provided with side walls 314 that are parallel to each other downward from both side edges of the upper plate 313. A flange 314a projects at a right angle from the lower end of the side wall 314, and a lid member 362 is attached to the second casing 302 via the flange 314a (see FIG. 21A). The front part and the rear part of the lower end of the pair of left and right side walls 314 are connected by a reinforcing bar 315, respectively.
As shown in FIG. 17, connecting pieces 316 protrude rearward from the lower end portions of the left and right side walls 314, and the left and right connecting pieces 316 are connected to both ends of the first shaft (shaft 306). The part penetrates. Thereby, the document table 350 (first housing 301) and the document cover 360 (second housing 302) are connected to each other so as to be openable and closable around the first shaft (shaft 306).

  As shown in FIG. 17, the connecting piece 316 is formed with an arc-shaped second guide hole 317 centering on the shaft 306. The second guide hole 317 communicates with the first guide hole 307 (not shown), and the stopper pin 309 of the end pulley 308 is slidably engaged with the second guide hole 317. That is, when the document cover 360 rotates around the first axis (shaft 306), the stopper pin 309 engages with the edge of the second guide hole 317, thereby opening the document cover 360. It will be stopped in the state.

  As shown in FIG. 19, a mainspring shaft 318 is installed between the left and right side walls 314, and a mainspring case 319 is rotatably attached to the mainspring shaft 318. A mainspring spring (not shown) is accommodated in the mainspring case 319. The center end (base end) of the mainspring spring is fixed to the mainspring shaft 318, and the outer peripheral end (free end) of the mainspring spring is fixed to the mainspring case 319. In this embodiment, the mainspring method is used, but this may be changed to the torsion coil method.

  On the side surface of the mainspring case 319, there is provided a first pulley (winding pulley 322) that is rotatably fixed via the center axis of the mainspring spring, that is, the mainspring shaft 318.

  A small-diameter portion 323 is integrally formed on the side surface of the first pulley (winding pulley 322), one end side of the rope 325 is wound around the small-diameter portion 323, and the tip of the rope 325 is wound around the first pulley (winding pulley 322). It is fixed. That is, the rope 325 is applied in the winding direction by the urging force of the mainspring spring.

  As shown in FIG. 19, the other end of the rope 325 is engaged with the outer periphery of the end pulley 308 from the rear, and the tip is fixed to the rope attachment portion 308 a of the end pulley 308. The second pulley (guide pulley 311) is installed at a position where it can engage with the rope 325 in front of the rope 25.

  As shown in FIG. 20B, a spiral groove 323a that engages with the rope 325 is provided in the small diameter portion 323 of the first pulley (winding pulley 322). According to this, since the rope 325 is fixed to the first pulley (winding pulley 322), the trajectory of the rope 325 is further stabilized, and the first housing 301 and the second housing 302 are further connected. It can be opened and closed smoothly.

  In addition, the groove | channel 323a in a 1st pulley (small diameter part 323) may be abbreviate | omitted. In this case, the configuration becomes simple, and the manufacturing cost can be reduced.

  Then, for example, from the state shown in FIGS. 21A and 21B to the state shown in FIGS. 22A and 22B, the angle between the document table 350 and the document cover 360 is set to the first axis. When the size is reduced with respect to the (shaft 306), that is, when the document cover 360 is closed with the first axis (shaft 306) as the center, the mainspring case 319 and the first pulley (winding pulley 322) are in the first housing. The second pulley (guide pulley 311) engages with the rope 325 installed between the first pulley (winding pulley 322) and the end pulley 308 from below, and moves to the lower front of the body 301. The orbit becomes longer. As a result, one end of the rope 325 is pulled against the urging force of the mainspring spring to rotate the first pulley (winding pulley 322) and the mainspring case 319.

For this reason, when closing the document cover 360 around the first axis (shaft 306), the first pulley (winding pulley 322) pulls the rope 325 and deforms the mainspring spring. The second housing 302 can be smoothly closed with respect to the first housing 301. That is, the document cover 360 can be closed smoothly.

17 and 18, when the document cover 360 is completely closed, the cover member 362 presses the document placed on the document table 350 (352), and the second housing 302 is attached to the cover member 362. It stays at that position due to the weight, and the rotation of the document cover 360 stops. At this time, the stopper pin 309 is engaged with the lower end of the first guide hole 307 (not shown) and is engaged with the upper end portion or the intermediate portion of the second guide hole 317 (see FIG. 17).

On the other hand, when the angle between the document table 350 and the document cover 360 is increased from the state shown in FIG. 22 around the first axis (shaft 306) from the state shown in FIG. When opening 360, the restoring force of the mainspring spring can be used to easily open the document lid 360 even when a load is applied to the document lid 360. Further, since the mainspring and the rotation of the first pulley (winding pulley 322) are used, the durability is higher than that of the conventional rotating coil spring and cam, and noise is generated. hard.

Further, as described above, in the document placing apparatus 300 according to the present embodiment, the document table 350 (first housing 301) has a second axis (position different from the first axis (shaft 306)). A second pulley (guide pulley 311) fixed to be rotatable about the guide pulley shaft 310) is provided (see FIG. 19).

At this time, from the state shown in FIG. 21 to the state shown in FIG. 22, when the angle between the document table 350 and the document cover 360 is reduced around the first axis (shaft 306), that is, the shaft 306. When the document cover 360 is closed around the center of the main body 360, the rope 325 engages with the second pulley (guide pulley 311) to rotate the first pulley against the urging force of the mainspring spring. (1st housing, 2nd housing) The structure of itself is simplified, the path of the rope 25 is further stabilized, and the first housing 301 and the second housing 302 can be opened and closed more smoothly. Can be made. That is, the document cover 360 can be opened and closed more smoothly with respect to the document table 350. Then, by using the rotation of the second pulley (guide pulley 311), the durability can be further improved and the occurrence of abnormal noise can be further prevented.

As shown in FIG. 23, at the one end portion of the center axis (spring shaft 318) of the mainspring spring provided on the document cover 360 (second casing 302), the first pulley (rolling pulley 322) described above is used. A ratchet gear 320 is fixed to the side wall 314 located on the opposite side. A stopper lever 321 is provided below the ratchet gear 320. The tip claw 321a of the stopper lever 321 is selectively engaged with the teeth of the ratchet gear 320 to restrict its rotation.

  The stopper lever 321 is rotatably attached to the side wall 314 so that the tip claw 321a contacts and separates from the ratchet gear 320, and is biased in a direction in which the tip claw 321a approaches the ratchet gear 320 by a coil spring 321b. Therefore, by rotating the mainspring shaft 318 with a tool and changing the engagement position of the ratchet gear 320 by the stopper lever 321, the position of the center end portion of the mainspring spring can be changed. In addition, it is convenient to form a tool hooking groove 318a on one end surface of the mainspring shaft 318.

As described above, in the document placing apparatus 300 of the present embodiment, the ratchet gear 320 fixed to the opposite side of the first pulley (winding pulley 322) on the central axis (spring shaft 318) of the mainspring spring, Since the stopper lever 321 for restricting the rotation of the ratchet gear 320 is provided, it is possible to easily adjust the spring force of the mainspring spring, and to ensure the stabilization of the track of the rope 325 easily. Can do.

The ratchet gear 320 and the stopper lever 321 may be omitted. In this case, the number of parts is reduced, and the manufacturing cost can be reduced.

[Fourth embodiment]
In the following, a document placing apparatus according to a fourth embodiment of the present invention will be described. Here, it demonstrates centering on a different point from 3rd Embodiment mentioned above.

  As shown in FIGS. 24 and 25, the document placing apparatus 400 according to the present embodiment rotates around the document table 450 and the first axis (shaft 406) of the document table 450 with respect to the document table 450. A possible intermediate body 402, and a document cover body 460 that is rotatable with respect to the intermediate body 402 about a third axis (shaft 429) at a position different from the first axis (shaft 406). Yes.

  The document table 450 in the fourth embodiment has the same configuration as the document table 350 in the third embodiment described above. The intermediate body 402 in the fourth embodiment has the same configuration as that of the second housing 302 in the third embodiment described above, and the configurations and mechanisms of the mainspring spring, the first pulley, and the like are also the same.

In the following, a document cover 460 having a configuration different from that of the third embodiment will be described.
As shown in FIGS. 25 and 26, the document cover 460 in the present embodiment is formed of a flat cover member 462 and a third housing 403 that is integrally attached to the cover member 462. Yes.

  The third housing 403 of the present embodiment has the same configuration as the third housing 3 of the second embodiment described above. That is, as shown in FIG. 25A, the third housing 403 includes a top plate 427 and outer walls 428 extending downward from both side edges of the top plate 427. As shown in FIG. 26A, a flange 430 projects at a right angle from the lower end of the outer wall 428. A lid member 462 is attached to the third housing 403 via the flange 430.

  As shown in FIG. 25A, the left and right outer walls 428 are formed with long holes 432 that can be engaged with both ends of the mainspring shaft 418. The long hole 432 has an arc shape centered on the third axis (shaft 429), and when the document cover 460 (third housing 403) rotates about the third axis (shaft 429), Both ends of the mainspring shaft 418 slide along the long hole 432. When the end of the mainspring shaft 418 is engaged with the end edge of the elongated hole 432, the rotation of the document cover 460 (third housing 403) with respect to the intermediate body 402 is stopped.

  As shown in FIG. 28, on the inner surface of one outer wall 428, a tension pulley shaft 435 extending inward of the intermediate body 402 is projected in parallel with the guide pulley shaft 310, and the outer periphery of the tension pulley shaft 435 A third pulley (tension pulley 431) is rotatably attached. In FIG. 29, the document table and the document cover are omitted. The third pulley (tension pulley 431) is rotatably fixed to the third housing 403 and is engaged with the rope 425 from below. Further, another guide pulley 426 is rotatably attached to the side wall of the intermediate body 402. The other guide pulley 426 is installed at the lower front of the small diameter portion 423 of the first pulley (winding pulley 422), and the rope 425 is engaged from below.

  As shown in FIG. 28, a tension pulley shaft 435 that is the rotation center axis of the third pulley (tension pulley 431), a guide pulley shaft 310 that is the rotation center axis of the guide pulley 311, and the intermediate body 402. A third axis 429 that is a rotation center axis of the first casing 401 and the third casing 403, a rotation center axis of the first casing 401 and the intermediate body 402, and a rotation center axis of the end pulley 408. One main shaft (shaft 406) and the mainspring shaft 418 which is the rotation center axis of the first pulley (winding pulley 422) are all arranged in parallel.

  As shown in FIG. 29, the third pulley (tension pulley 431) includes a third engagement groove 431a that engages with the rope 25, and third flanges provided on both sides of the engagement groove 431a. 431b. Thereby, the fixed state of the rope 425 with respect to the 3rd pulley (tension pulley 431) comes to be stabilized.

  Further, as shown in FIG. 29, in the second pulley (guide pulley 311) and the third pulley (tension pulley 431) of the present embodiment, the second rope engaging groove 311a and the third flange 431b. Alternatively, the second flange 311b and the third rope engaging groove 431a are preferably configured to rotate in the same plane. Accordingly, the length of the mechanism for opening and closing each of the document table 450, the intermediate body 402, and the document cover 460 can be shortened, and the document placement device 400 itself can be designed compactly.

  Here, as described above, the document placing apparatus 400 of the present embodiment is rotatable with respect to the document table 450 and the first axis (shaft 406) of the document table 450 with respect to the document table 450. An intermediate body 402, and an original cover 460 that can rotate about the third axis (shaft 429) at a position different from the first axis (shaft 406) with respect to the intermediate body 402, and The mainspring spring fixed to the intermediate body 402, the first pulley (winding pulley 422) rotatably fixed to the central axis of the mainspring spring, and the first pulley (winding pulley 422) A rope 425 and a third pulley 431 that is rotatably fixed to the document cover and engages with the rope 425.

When the angle between the document table 450 and the intermediate body 402 is reduced with the first shaft (shaft 406) as the center, the rope 425 resists the urging force of the mainspring spring and the first pulley (winding pulley). 422) is rotated, and when the angle between the intermediate 402 and the document cover body 460 was large comb about the third axis 429, the third pulley against the biasing force of the spiral spring rope 425 Is designed to pull.

That is, first, when the document cover 460 is rotated from the state shown in FIGS. 26A and 26B to the state shown in FIGS. 27A and 27B (between the document table 450 and the intermediate body 402). When the angle of the first shaft (shaft 406) is reduced), the first pulley (winding pulley 422) pulls the rope 425 and deforms the mainspring spring, so that the trajectory of the rope 425 is stabilized. The document cover 460 can be smoothly closed with respect to the document table.

In addition, from the state where the document cover 460 as shown in FIG. 27 is opened to some extent, the angle between the intermediate body 402 and the document cover 460 is changed as shown in FIGS. when there was large comb about the third axis (shaft 429), i.e., when rotates the document cover body 460 relative to the intermediate member 402, the third pulley (tension pulley 431) moves rearward Thus, the rope is pulled against the urging force of the mainspring spring to deform the mainspring spring, so that the trajectory of the rope 425 is stabilized and the document cover 460 can be smoothly closed with respect to the intermediate body 402.

At this time, as shown in FIG. 30 (b), the third housing 403 rotates around the third shaft (the other shaft 429) while the position is fixed with the intermediate body 402 opened. As a result, the document cover 460 and the document table 450 can be arranged in parallel at a predetermined interval. That is, in this embodiment, when a thick original G1 is placed on the original table 450, the original cover 460 rotates about the third axis (the other shaft 429), and the original cover 460 and the original are rotated. As shown in FIGS. 30A and 30B, the table 450 can sandwich the document G1 in parallel.
Further, as shown in FIGS. 31A and 31B, even when a document G2 having a thickness smaller than that of the document G1 is placed on the document table 450, the position is fixed with the intermediate body 402 opened. While the third casing 403 rotates around the third axis (the other shaft 429), the document cover 460 and the document table 450 are parallel to each other at a predetermined interval. The document G2 can be sandwiched between the document cover 460 and the document table 450.

That is, according to the document placing apparatus of the present embodiment, even when the thickness of the document is changed, the document can be successfully sandwiched between the document table 450 and the document lid 460.

On the other hand, when the original cover 460 is opened, the original cover 460 can be easily opened even when a load is applied to the original cover 460 using the restoring force of the mainspring spring. Further, since the mainspring and the rotation of the first pulley (winding pulley 422) are used, the durability is higher than that of the conventional rotating coil spring and cam, and noise is generated. hard.

  In the present embodiment, similarly to the third embodiment, the second plate fixed to the document table 450 so as to be rotatable around the second shaft 310 at a position different from the first shaft (shaft 406). A pulley (guide pulley 311) is provided.

The rope 425 reduces the angle between the document table 450 and the intermediate body 402 around the first axis (shaft 406) and the angle between the intermediate body 402 and the document cover 460. when was the size comb about the third axis 429, rotates the second pulley first pulley (hoisting pulley 422) against the biasing force of the spiral spring by engaging the (guide pulley 311). For this reason, the configuration of the hinge device itself is simplified, the trajectory of the rope 425 is further stabilized, and the document table 450 and the document cover 460 can be opened and closed more smoothly. The second pulley (guide) By utilizing the rotation of the pulley 311), the durability can be further improved and the occurrence of abnormal noise can be further prevented.

DESCRIPTION OF SYMBOLS 1,301 ... 1st housing | casing 6,306,406 ... 1st axis | shaft 2,302 ... 2nd housing | casing 22,322,422 ... 1st pulley (winding pulley)
25, 325, 425 ... Rope 100, 200 ... Hinge device 10, 310 ... Second shaft (shaft for guide pulley)
11, 311 ... second pulley (guide pulley)
29,429 ... third shaft 3,403 ... third casing 31,431 ... third pulley (tension pulley)
11a, 311a, second rope engaging grooves 11b, 311b, second flange 31a, 431a, third rope engaging grooves 31b, 431b, third flange 23a, 323a ... first pulley groove 20, 320 ... ratchet gear 21, 321 ... stopper lever 350, 450 ... document table 360, 460 ... document cover 300, 400 ... document Mounting device 402... Intermediate

Claims (8)

The document table,
A document lid that is rotatable about the first axis of the document table with respect to the document table;
A mainspring spring fixed to the document cover;
A first pulley rotatably fixed to the central axis of the mainspring spring;
In the document placing device provided with a rope wound around the first pulley,
The rope rotates the first pulley against the biasing force of the mainspring spring when the angle between the document table and the document lid is reduced around the first axis. A document placing device as a feature. A second pulley fixed to the document table rotatably about a second axis at a position different from the first axis;
The rope resists the urging force of the mainspring spring by engaging with the second pulley when the angle between the document table and the document lid is reduced around the first axis. The document placing apparatus according to claim 1, wherein the first pulley is rotated. The document table,
An intermediate body rotatable about the first axis of the document table with respect to the document table;
A document cover that is rotatable about a third axis at a position different from the first axis with respect to the intermediate;
A mainspring spring fixed to the intermediate body;
A first pulley rotatably fixed to the central axis of the mainspring spring;
A rope wound around the first pulley;
A third pulley that is rotatably fixed to the document lid and engages with the rope;
When the angle between the document table and the intermediate body is reduced around the first axis, the rope rotates the first pulley against the urging force of the mainspring spring,
The angle between the document cover member and the intermediate member when was large comb about said third axis, said third pulley to pull the rope against the urging force of the spiral spring An original placing apparatus characterized by the above.   4. The document placing apparatus according to claim 3, wherein a gap between the document table and the document lid can be changed in parallel according to the thickness of the document. A second pulley fixed to the document table rotatably about a second axis at a position different from the first axis;
When the angle between the document table and the intermediate body is reduced with the first axis as a center, and the angle between the intermediate body and the document cover body is set on the third axis. when was the size comb around, placing document according to claim 4, characterized in that rotating the first pulley against the biasing force of the spiral spring by engaging said second pulley Device. The second pulley has a second rope engaging groove that engages with the rope, and second flanges formed on both sides of the second rope engaging groove,
The third pulley has a third rope engaging groove that engages with the rope, and third flange portions formed on both sides of the third rope engaging groove,
The said 2nd rope engaging groove and the said 3rd collar part or the said 2nd collar part, and the said 3rd rope engaging groove rotate in the same plane, The Claim 6 characterized by the above-mentioned. Document placement device. The document placing apparatus according to any one of claims 1 to 6, wherein a spiral groove that engages with the rope is formed in the first pulley. A ratchet gear fixed to the opposite side of the first pulley at the central axis of the mainspring spring;
8. The document placing apparatus according to claim 1, further comprising a stopper lever that restricts rotation of the ratchet gear.