JP2020094405A - Mechanical parking facility - Google Patents

Abstract

To prevent disengagement of an engaging device in a mechanical parking facility.SOLUTION: A mechanical parking facility 1 comprises: a palette 30; an ascending and descending device 80; and an engagement device 100 making the palette engage with a restiform body (a chain 81) of the ascending and descending device so as to be engaged with and disengaged from each other. The engagement device includes: an engaging member 5 attached to the restiform body; and an engaged member 6 attached to the palette. The engaging member can rotate downwardly around a prescribed horizontal axis. In a cross section of the engagement device, an engagement position of a first engagement face 51 and a third engagement face 61 includes a first specific point (a contact point 1) in which an angle formed by a linear line Ln13 crossing the horizontal axis and passing the first specific point and a boundary line Ln11 of the first engagement face and the third engagement face becomes an acute angle. An engagement position of a second engagement face 52 and a fourth engagement face 62 includes a second specific point (a contact point 2) in which an angle formed by a linear line Ln23 crossing the horizontal axis and passing the second specific point and a boundary line Ln21 of the second engagement face and the fourth engagement face becomes an acute angle.SELECTED DRAWING: Figure 4

Description

The technology disclosed herein relates to a mechanical parking facility.

Patent Document 1 describes a mechanical parking facility. The mechanical parking facility includes a pallet for mounting a car and a lifting device for lifting the pallet. The pallet and the lifting device are detachably engaged with each other by the engagement device. The lifting device has chains vertically stretched at four corners of the pallet. The engagement device has an engagement member (locking hook 81) and an engaged member (locking member 31) that engages with the engagement member. The engaging member is fixed to each chain of the lifting device. The engaged members are attached to the four corners of the pallet. When the chain travels up and down with the engaging member and the engaged member engaged, the pallet moves up and down.

The mechanical parking facility described in Patent Document 2 is configured such that the guide rail 65 guides the engaging member (elevating rail 60) fixed to the chain. The guide rail 65 extends vertically along the chain. A pair of guide rollers 64 that engage with each other so as to sandwich the guide rail 65 is attached to the engaging member. When the guide rail 65 and the guide roller 64 are engaged with each other, the engagement member fixed to the chain keeps its posture horizontal.

JP, 2016-65436, A JP-A-60-73972

The inventors of the present application have noticed that the engagement device described in Patent Document 1 may disengage from the engagement member and the engaged member during lifting and lowering of the pallet.

The technology disclosed herein prevents disengagement of an engagement device in a mechanical parking facility.

Specifically, the mechanical parking equipment disclosed herein has a pallet on which an automobile is mounted and a cord-shaped body stretched in the vertical direction, and the pallet is moved up and down by traveling of the cord-shaped body. An elevating device and an engaging device that engages the pallet with the cord-like body in a disengageable manner.

The engaging device is attached to the cord-like body, moves in the vertical direction by the traveling of the cord-like body, and has two engaging surfaces, a first engaging surface and a second engaging surface. And a third engaging surface attached to the pallet and engaging with the first engaging surface, and a fourth engaging surface engaging with the second engaging surface. An engaged member, and one of the engaging member and the engaged member is opened at a position where a cross section of the engaging member and the engaged member are horizontally displaced with respect to the cord by two engaging surfaces facing each other. Is a hook shape in which a portion is formed, and the other of the engaging member and the engaged member is formed by two back-to-back engaging surfaces, and the engaging member and the engaged member are in the vertical direction. Is a shape having an entrance portion that relatively enters the opening portion when engaged with.

At least one of the two engaging surfaces that form the opening is inclined so that the opening expands in the approach direction of the entering portion, and the engaging member has a predetermined crossing with the cord-like body. It can rotate downward about a horizontal axis.

Then, in the cross section of the engagement device in the state where the engagement member and the engaged member are engaged, the engagement points of the first engagement surface and the third engagement surface are the horizontal axis. The first specific point having an acute angle formed by a straight line intersecting with and passing through the first specific point and the line of the boundary between the first engaging surface and the third engaging surface, In the cross section of the engagement device in the state where the member and the engaged member are engaged, the engagement points of the second engagement surface and the fourth engagement surface intersect the horizontal axis and The second specific point has an acute angle formed by a straight line passing through the two specific points and a line of a boundary between the second engagement surface and the fourth engagement surface.

Although the details will be described later, according to this configuration, disengagement between the engaging member and the engaged member is suppressed.

The mechanical parking facility disclosed herein also includes a pallet on which an automobile is mounted, an elevating device that has a cord-shaped body stretched in the up-and-down direction, and elevates and lowers the pallet as the cord-shaped body travels. , An engaging device for releasably engaging the pallet and the cord-like body.

The engaging device is attached to the cord-like body, moves in the vertical direction by the traveling of the cord-like body, and has two engaging surfaces, a first engaging surface and a second engaging surface. And a third engaging surface attached to the pallet and engaging with the first engaging surface, and a fourth engaging surface engaging with the second engaging surface. The engaged member has a hook shape whose cross section has an opening formed at a position displaced in the horizontal direction with respect to the cord-like body by two engaging surfaces facing each other. And the engaged member is formed by two back-to-back engaging surfaces, and relatively enters into the opening when the engaging member and the engaged member engage in the vertical direction. It has a shape with an entrance.

At least one of the two engaging surfaces that form the opening is inclined so that the opening expands in the approach direction of the entering portion, and the engaging member has a predetermined crossing with the cord-like body. It can rotate downward about a horizontal axis.

Then, in the cross section of the engaging device in which the engaging member and the engaged member are engaged, the first engaging surface and the third engaging member located relatively close to the cord-like body. The engagement points on the mating surface and the engagement points on the second engagement surface and the fourth engagement surface, which are located relatively far from the cord-shaped body, satisfy the relational expression A1<A2. It is configured.

Here, A1 is the first value when it is assumed that the engaging member rotates downward by φ around the horizontal axis from the state where the engaging member and the engaged member are engaged. The amount by which one engagement surface moves in the horizontal direction relative to the stationary third engagement surface.

A1={x1+|y1'-y1|tan(α1)}-x1'
However, (x1, y1) is the XY coordinate system with the horizontal axis as the origin, the horizontal direction as X, and the vertical direction as Y, and the first engaging surface and the above before the engaging member rotates. The coordinates of the point 1 included in the engagement position of the third engagement surface, (x1′, y1′) are the coordinates of the point 1 after the engagement member is rotated, and α1 is the first It is the angle of the engagement points of the first engagement surface and the third engagement surface with respect to the vertical direction. When A1<0, the first engagement surface moves toward the third engagement surface.

Further, A2 is the second value when it is assumed that the engaging member rotates downward by φ around the horizontal axis from a state where the engaging member and the engaged member are engaged with each other. The amount by which the engagement surface moves in the horizontal direction relative to the stationary fourth engagement surface.

A2=x2-{x2'+|y2'-y2|tan(α2+φ)}
However, (x2, y2) is the coordinate of the point 2 included in the engagement portion of the second engagement surface and the fourth engagement surface before the engagement member rotates in the XY coordinate system. Yes, (x2′, y2′) is the coordinates of the point 2 after the engagement member is rotated, and α2 is the engagement location of the second engagement surface and the fourth engagement surface, It is an angle with respect to the vertical direction. When A2<0, the second engagement surface moves in the direction away from the fourth engagement surface.

Although the details will be described later, according to this configuration, disengagement between the engaging member and the engaged member is suppressed. The point 1 includes the contact point 1 described later. The point 2 includes a contact point 2 described later.

The mechanical parking facility disclosed herein further includes a pallet on which a vehicle is mounted, and a lifting device that has a cord-shaped body stretched in the vertical direction and that moves the cord-shaped body to raise and lower the pallet. , An engaging device for releasably engaging the pallet and the cord-like body.

The engaging device is attached to the cord-like body, moves in the vertical direction by the traveling of the cord-like body, and has two engaging surfaces, a first engaging surface and a second engaging surface. And a third engaging surface attached to the pallet and engaging with the first engaging surface, and a fourth engaging surface engaging with the second engaging surface. A hook shape in which an opening is formed at a position shifted in the horizontal direction with respect to the cord by the two engaging surfaces facing each other. And the engaging member is formed by two back-to-back engaging surfaces and relatively enters the opening when the engaging member and the engaged member are engaged in the vertical direction. It has a shape with an entrance.

At least one of the two engaging surfaces that form the opening is inclined so that the opening expands in the approach direction of the entering portion, and the engaging member has a predetermined crossing with the cord-like body. It can rotate downward about a horizontal axis.

Then, in the cross section of the engagement device in which the engagement member and the engaged member are engaged, the first engagement surface and the third engagement member located relatively far from the cord-like body. The engagement points on the mating surface and the engagement points on the second engagement surface and the fourth engagement surface, which are located relatively close to the cord-shaped body, satisfy the relational expression A1<A2. It is configured.

Here, A1 is the first value when it is assumed that the engaging member rotates downward by φ around the horizontal axis from the state where the engaging member and the engaged member are engaged. The amount by which one engagement surface moves in the horizontal direction relative to the stationary third engagement surface.

A1={x1+|y1'-y1|tan(α1)}-x1'
However, (x1, y1) is the XY coordinate system with the horizontal axis as the origin, the horizontal direction as X, and the vertical direction as Y, and the first engaging surface and the above before the engaging member rotates. The coordinates of the point 1 included in the engagement position of the third engagement surface, (x1′, y1′) are the coordinates of the point 1 after the engagement member is rotated, and α1 is the first It is the angle of the engagement points of the first engagement surface and the third engagement surface with respect to the vertical direction. When A1<0, the first engagement surface moves toward the third engagement surface.

Further, A2 is the second value when it is assumed that the engaging member rotates downward by φ around the horizontal axis from a state where the engaging member and the engaged member are engaged with each other. The amount by which the engagement surface moves in the horizontal direction relative to the stationary fourth engagement surface.

A2=x2-{x2'+|y2'-y2|tan(α2+φ)}
However, (x2, y2) is the coordinate of the point 2 included in the engagement portion of the second engagement surface and the fourth engagement surface before the engagement member rotates in the XY coordinate system. Yes, (x2′, y2′) is the coordinates of the point 2 after the engagement member is rotated, and α2 is the engagement location of the second engagement surface and the fourth engagement surface, It is an angle with respect to the vertical direction. When A2<0, the second engagement surface moves in the direction away from the fourth engagement surface.

In the state where the engagement member is not engaged with the engaged member, the first engagement surface and the second engagement surface are different from the third engagement surface and the fourth engagement surface. The engaging member may be configured to be tilted by a predetermined angle in a direction in which the engaging member rotates upward about the horizontal axis.

By doing so, although the details will be described later, when the engaging member and the engaged member are engaged, the engaging member and the engaged member can be appropriately engaged. As a result, disengagement of the engagement device is suppressed.

The mechanical parking facility disclosed herein further includes a pallet on which a vehicle is mounted, and a lifting device that has a cord-shaped body stretched in the vertical direction and that moves the cord-shaped body to raise and lower the pallet. , An engaging device for releasably engaging the pallet and the cord-like body.

The engaging device is attached to the cord-like body, moves in the vertical direction by the traveling of the cord-like body, and has two engaging surfaces, a first engaging surface and a second engaging surface. And a third engaging surface attached to the pallet and engaging with the first engaging surface, and a fourth engaging surface engaging with the second engaging surface. An engaged member, and one of the engaging member and the engaged member is opened at a position where a cross section of the engaging member and the engaged member are horizontally displaced with respect to the cord by two engaging surfaces facing each other. Is a hook shape in which a portion is formed, and the other of the engaging member and the engaged member is formed by two back-to-back engaging surfaces, and the engaging member and the engaged member are in the vertical direction. Is a shape having an entrance portion that relatively enters the opening portion when engaged with.

At least one of the two engaging surfaces that form the opening is inclined so that the opening expands in the approach direction of the entering portion, and the engaging member has a predetermined crossing with the cord-like body. It can rotate downward about a horizontal axis.

The first engaging surface and the second engaging surface of the engaging member are the third engaging surface and the fourth engaging surface when not engaged with the engaged member. On the other hand, the engaging member is configured to be tilted by a predetermined angle in the direction of upward rotation about the horizontal axis.

With this configuration, as described above, when the engaging member and the engaged member engage with each other, the engaging member and the engaged member can be appropriately engaged with each other. As a result, disengagement of the engagement device is suppressed.

As described above, the mechanical parking equipment described above can prevent the engagement member and the engaged member from being disengaged while the pallet is being moved up and down.

FIG. 1 is a front view illustrating a mechanical parking facility. FIG. 2 is a side view of the mechanical parking facility. FIG. 3 is a perspective view showing a state in which the engagement member attached to the chain and the engaged member attached to the pallet are engaged with each other. FIG. 4 is a cross-sectional view and an enlarged view of the engagement device of the first configuration example. FIG. 5 is a cross-sectional view of the engagement device of the second configuration example, showing the coordinates of the contact point 1 and the contact point 2 when the engagement member is assumed to rotate by a predetermined angle with respect to the engaged member. is there. FIG. 6 is an enlarged view of the vicinity of the contact point 1 in FIG. FIG. 7 is an enlarged view of the vicinity of the contact point 2 in FIG. FIG. 8: is sectional drawing which illustrates the structure which rotated the opening part of an engaging member. FIG. 9 is a cross-sectional view illustrating a configuration in which the positions of the mounting holes of the engaging members are shifted. FIG. 10 is a cross-sectional view illustrating an engaging device having a configuration different from those in FIGS. 4 and 5. FIG. 11 is a cross-sectional view illustrating an engagement device having a configuration different from those in FIGS. 4, 5, and 10. FIG. 12: is sectional drawing which shows the structure of the conventional engaging device. FIG. 13 is a diagram for explaining the reason why the engagement device of FIG. 12 is disengaged. FIG. 14 is an enlarged view near the contact point 2 in FIG. FIG. 15 is an enlarged view near the contact point 1 in FIG.

Hereinafter, embodiments of a mechanical parking facility and an engagement device used in the mechanical parking facility will be described with reference to the drawings. The mechanical parking equipment shown below is an example. FIG. 1 is a front view of the mechanical parking facility 1. FIG. 2 is a side view of the mechanical parking facility 1.

(Overall structure of mechanical parking equipment)
The mechanical parking facility 1 illustrated in FIG. 1 is a ground entry type provided on the ground G. The mechanical parking facility 1 has four stages in the vertical direction and five rows in the horizontal direction, and has 20 storage spaces 40. One of the 20 storage spaces 40 is an empty space 41. The number of pallets 30 on which the automobiles V are mounted is 19, and the mechanical parking facility 1 can store 19 automobiles V.

The mechanical parking facility 1 includes column members 2 vertically provided at the front and rear positions. In the mechanical parking facility 1 illustrated in FIG. 1, all rows in the first stage are the loading/unloading units 42. Each of the storage/reception sections 42 is provided with a movable fence 43 that can be individually opened/closed between the column members 2.

In the first stage and the fourth stage of the mechanical parking facility 1, the traverse device 90 (see FIG. 2) can traverse each pallet 30 individually as indicated by the arrow W. Further, in each row of the mechanical parking equipment 1, the lifting device 80 can lift (lift) all the pallets 30 in the row together (simultaneously) as indicated by an arrow H. The traverse device 90 and the elevating device 80 are controlled by the control device 44.

The elevating device 80 is provided at the positions of the front and rear pillars 2. The lifting device 80 is provided at each of the four front, rear, left, and right corners of the pallet 30. The lifting device 80 has a chain 81 as a cord and a sprocket 82 that stretches the chain 81 in the vertical direction. The chains 81 provided at the front, rear, left, and right positions travel in synchronization.

The pallet 30 is engaged with the chain 81 by the engagement device 100. The engagement device 100 engages the pallet 30 and the chain 81 in a disengageable manner. The engagement device 100 includes an engagement member 5 and an engaged member 6.

As shown in FIG. 3, the engagement member 5 is attached to the chain 81. A plurality of engaging members 5 are fixed to the chain 81 at predetermined equal intervals. In the configuration example of FIG. 3, the engagement member 5 has a hook shape having an opening portion 53 whose mouth is open upward.

The engaged member 6 has an entry portion 63 that enters the opening 53. The entry portion 63 extends outward from the pallet 30.

The engagement member 5 moves relative to the engaged member 6 of the stationary pallet 30 from bottom to top. When the entry portion 63 of the engaged member 6 enters the opening 53 of the engaging member 5, the engaging member 5 and the engaged member 6 engage with each other. The pallet 30 is moved up and down by the elevating device 80 while the front, rear, left and right four corners are supported by the engaging device 100.

According to the mechanical parking facility 1 having this configuration, the control device 44 controls the traverse device 90 and the elevating device 80 to arrange the arbitrary pallet 30 in all the storage spaces 40 by utilizing the empty space 41. be able to. That is, one or a plurality of pallets 30 are moved up and down by one pitch (one storage space 40) toward the empty space 41, and the same operation is repeated toward the newly created empty space 41. , Any pallet 30 can be placed in any storage space 40.

It should be noted that, although FIG. 1 illustrates the arrangement example of the mechanical parking facility 1 in which the loading/unloading unit 42 on the ground floor is the first stage which is the lowest stage, for example, the second stage of the mechanical parking facility 1, It is also possible to use the third or fourth tier as the loading/unloading section 42 on the ground floor.

(Structure of engaging device)
<Cause of disengagement of the engagement device>
As shown in FIG. 3, the engagement member 5 of the engagement device 100 is fixed to the chain 81. The chain 81 can be displaced in the horizontal direction because of the structure in which a plurality of plates are rotatably connected by pins. The chain 81 does not completely restrain the posture of the engaging member 5, and the posture of the engaging member 5 can be changed to some extent. This mechanical parking facility 1 is not provided with a guide rail for keeping the posture of the engaging member 5 horizontal, as described in Patent Document 2, for example.

The inventors of the present application noticed that, during the development of the mechanical parking facility 1, the engagement between the engaging member 5 and the engaged member 6 may be disengaged while the pallet 30 is being moved up and down. It was Therefore, the inventors of the present application investigated the cause of disengagement between the engaging member 5 and the engaged member 6.

FIG. 12 illustrates a conventional engagement device 10. FIG. 12 corresponds to the AA cross section of FIG. Note that, in FIG. 12, hatching showing a cross section is omitted from the engaging member 50 for easy understanding. This also applies to FIGS. 13, 4, 5, 8, 9 and 10 described later.

The conventional engagement device 10 is an engagement device in which the engagement between the engagement member 50 and the engaged member 60 is disengaged. The engaging member 50 is fixed to the chain 81 stretched in the vertical direction as described above. More specifically, the engagement member 50 is fixed to the chain 81 by inserting the pins 507 into the mounting holes 506 provided at the upper and lower portions of the flange portion 505.

The engagement member 50 has a first engagement surface 501 and a second engagement surface 502 that are opposed to each other in the horizontal direction. The first engagement surface 501 and the second engagement surface 502 form an opening 503 that opens upward. The position of the opening 503 is displaced in the horizontal direction with respect to the chain 81. In the engaging member 50, the first engaging surface 501 is along the vertical direction. The second engagement surface 502 is inclined with respect to the vertical direction. The opening 503 expands in the approaching direction of the engaged member 60 (that is, the vertical direction).

The engaged member 60 has a third engaging surface 601 engaging with the first engaging surface 501 of the engaging member 50 and a fourth engaging surface 602 engaging with the second engaging surface 502. ing. The third engagement surface 601 extends in the vertical direction. The fourth engagement surface 602 is inclined with respect to the vertical direction. The inclination angle of the second engagement surface 502 and the inclination angle of the fourth engagement surface 602 are the same. The third engagement surface 601 and the fourth engagement surface 602 make the cross section of the entrance portion 603 of the engaged member 60 taper downward.

As described above, the engaged member 50 moves upward from below with respect to the engaged member 60 of the stopped pallet 30, so that the engaged member 60 enters the opening 503. Then, at least a part of the first engaging surface 501 of the engaging member 50 and the third engaging surface 601 of the engaged member 60 are in contact with each other, and the second engaging surface 502 of the engaging member 50 is in contact with the second engaging surface 502. At least a part of the engagement member 60 and the fourth engagement surface 602 contact each other, so that the engagement member 50 and the engaged member 60 engage with each other (see the solid line in FIG. 12 ).

Here, an external force from the pallet 30 acts on any one of the four chains 81 supporting one pallet 30 or the engaging member 5 to show it by an outline arrow in FIG. As described above, the engagement member 50 may try to rotate in the counterclockwise direction (that is, downward) about the upper pin 507 as a center. The axis of the upper pin 507 intersects the chain 81 and constitutes a horizontal axis that serves as the center of rotation of the engaging member 50. Since the pallet 30 is supported by the remaining three chains 81 when the engaging member 50 tries to rotate, the pallet 30 maintains a horizontal posture. When the engaging member 50 is about to rotate, the engaged member 60 attached to the pallet 30 does not rotate and remains stopped.

According to the study by the inventors of the present application, in the conventional engaging device 10, when the engaging member 50 rotates relatively, the first engaging surface 501 of the engaging member 50 is , The second engaging surface 502 of the engaging member 50 moves away from the third engaging surface 601 of the engaged member 60, and the fourth engaging surface 602 of the engaged member 60 moves away from the third engaging surface 601. I found it to move. As a result of releasing the engagement state between the first engagement surface 501 and the third engagement surface 601 and releasing the engagement state between the second engagement surface 502 and the fourth engagement surface 602, the conventional engagement In the coupling device 10, the engagement between the engaging member 50 and the engaged member 60 is disengaged. In other words, the conventional engagement device 10 has a friction between the first engagement surface 501 and the third engagement surface 601 and a friction between the second engagement surface 502 and the fourth engagement surface 602. The engagement between the engaging member 50 and the engaged member 60 is merely maintained. Therefore, it is newly found from the study by the inventors of the present application that the engagement of the conventional engagement device 10 is disengaged when an external force (eg, a force such as vibration) that causes the friction to collapse is applied. It was

The inventors of the present application further studied the shapes of the engaging member 50 and the engaged member 60 that would be disengaged. FIG. 13 shows the first engaging surface 501 and the second engaging surface 502 of the engaging member 50, and the third engaging surface 601 of the engaged member 60 in the conventional engaging device 10 shown in FIG. It is a figure explaining the relationship with the 4th engaging surface 602.

First, in the cross section of the conventional engaging device 10 in a state where the engaging member 50 and the engaged member 60 are engaged with each other, the second engaging surface 502 located relatively far from the chain 81 and The engagement point of the fourth engagement surface 602 will be described. In the conventional engagement device 10 shown in FIGS. 12 and 13, the engagement member among the engagement points of the second engagement surface 502 of the engagement member 50 and the fourth engagement surface 602 of the engaged member 60. The contact point 2 is the portion where the amount of separation between the second engagement surface 502 and the fourth engagement surface 602 is the smallest when the 50 is rotated. The contact point 2 is the lowest point in the engagement portion between the second engagement surface 502 and the fourth engagement surface 602 in FIG. A circle C2 in FIG. 13 is a circle centered on the rotation center O of the engagement member 50 and having a radius from the rotation center O to the contact point 2.

A portion of the second engagement surface 502 above the contact point 2 is located outside the circle C2. It can be seen that when the engagement member 50 rotates in the counterclockwise direction in FIG. 13, the portion of the second engagement surface 502 above the contact point 2 moves away from the fourth engagement surface 602.

Further, the contact point 2 moves along the circumference of the circle C2 when the engagement member 50 rotates. The contact point 2 also moves away from the fourth engagement surface 602 when the engagement member 50 rotates.

Here, the broken line Ln21 is a straight line drawn along the fourth engagement surface 602 of the engaged member 60. The broken line Ln22 is a straight line that passes through the rotation center O and is orthogonal to the broken line Ln21. When the circle C2 is equally divided into four arcs Ar21, Ar22, Ar23, and Ar24 with reference to the broken line Ln22, the contact point 2 of the engaging member 50 shown in FIGS. 12 and 13 becomes the first arc Ar21. positioned. As enlarged and shown in FIG. 14, when the contact point 2 on the first arc Ar21 moves counterclockwise along the circumference of the circle C1, the contact point 2 moves away from the broken line Ln21 (see a broken arrow). The broken line arrow is exaggerated in the direction in which the contact point 2 separates from the broken line Ln21 for easy understanding). That is, the contact point 2 on the first arc Ar21 moves in a direction away from the fourth engagement surface 602 of the engaged member 60.

On the other hand, the point on the second arc Ar22 as indicated by the white circle in FIG. 14 moves in the direction approaching the broken line Ln21 when moving counterclockwise along the circumference of the circle C1 (white arrow). (For the sake of easy understanding, a white arrow also exaggerates the direction in which the white circle points are close to the broken line Ln21).

Unlike the conventional engagement device 10 of FIGS. 12 to 14, at least one point (that is, the second identification value) at the engagement position between the second engagement surface of the engagement member and the fourth engagement surface of the engaged member. If the second engaging surface and the fourth engaging surface are formed so that the point) is a point on the second arc Ar22, the second specific point when the engaging member rotates in the counterclockwise direction. Moves toward the fourth engagement surface of the engaged member. In the engagement device having this configuration, even when the engagement member is about to rotate, the second engagement surface and the fourth engagement surface can maintain the engaged state.

In the conventional engagement device 10 of FIGS. 12 to 14, the contact point 2 at the engagement point of the second engagement surface 502 and the fourth engagement surface 602 passes through the rotation center O of the engagement member 50 and the contact point. The angle θ2 formed by the line Ln23 passing through 2 and the line along the fourth engagement surface 602 of the engaged member 60, in other words, the line Ln21 at the boundary between the second engagement surface 502 and the fourth engagement surface 602 is 90. This is the point where the obtuse angle exceeds °.

In order for at least one point (that is, the second specific point) at the engagement point between the second engagement surface and the fourth engagement surface to become a point on the second arc Ar22, the point passing through the rotation center O of the engagement member and the second An angle θ2 formed by a line Ln23 passing through the specific point and a line Ln21 at a boundary between the second engagement surface and the fourth engagement surface is an acute angle of less than 90°, and the second specific point is the second engagement surface and the second engagement point. 4 It is necessary to exist in the engagement position with the engagement surface. That is, in the cross section of the engaging device in the state where the engaging member and the engaged member are engaged, the second engaging surface of the engaging member and the engaged member that are positioned relatively far from the chain 81. The engagement points on the fourth engagement surface of the engagement member are the straight line (Ln23) that intersects the rotation center axis of the engagement member and passes through the second specific point, and the second engagement surface and the fourth engagement surface. When the angle θ2 formed by the boundary line (Ln21) has a second specific point that is an acute angle, the second engagement surface and the fourth engagement surface maintain the engaged state.

Next, the engaging portion between the first engaging surface 501 of the engaging member 50 located relatively close to the chain 81 and the third engaging surface 601 of the engaged member 60 also has the above-described second position. The engagement points of the engagement surface 502 and the fourth engagement surface 602 are similar. Of the engagement points between the first engagement surface 501 of the engagement member 50 and the third engagement surface 601 of the engaged member 60, when the engagement member 50 rotates, the first engagement surface 501 and the first engagement surface 501 The point where the distance from the 3 engagement surface 601 is the smallest is the contact point 1. The contact point 1 is the highest point in the engagement portion between the first engagement surface 501 and the third engagement surface 601 in FIG. A circle C1 in FIG. 13 is a circle centered on the rotation center O of the engaging member 50 and having a radius from the rotation center O to the contact point 1.

A portion of the first engagement surface 501 below the contact point 1 is located outside the circle C1. When the engaging member 50 rotates in the counterclockwise direction in FIG. 13, a portion of the first engaging surface 501 below the contact point 1 is separated from the third engaging surface 601 of the engaged member 60. You can see that they are going away.

Further, the contact point 1 moves along the circumference of the circle C1 when the engaging member 50 rotates in the counterclockwise direction. The contact point 1 also moves away from the third engagement surface 601 when the engagement member 50 rotates counterclockwise.

The broken line Ln11 is a straight line drawn along the third engagement surface 601 of the engaged member 60. The broken line Ln12 is a straight line that passes through the rotation center O and is orthogonal to the broken line Ln11. When the circle C1 is equally divided into four arcs Ar11, Ar12, Ar13, and Ar14 with reference to the broken line Ln12, the contact point 1 of the engaging member 50 shown in FIGS. 12 and 13 becomes the second arc Ar12. positioned. As enlarged and shown in FIG. 15, when the contact point 1 on the second arc Ar12 moves counterclockwise along the circumference of the circle C2, the contact point 1 moves away from the broken line Ln11 (see a broken arrow). ). That is, the contact point 1 on the second arc Ar12 moves in a direction away from the third engagement surface 601 of the engaged member 60.

On the other hand, a point on the first arc Ar11 shown by a white circle in FIG. 15 moves in a direction approaching the broken line Ln11 when it moves counterclockwise along the circumference of the circle C1 (a white arrow). reference).

Unlike the conventional engagement device 10 of FIGS. 12, 13, and 15, at least one point (that is, at the engagement point between the first engagement surface of the engagement member and the third engagement surface of the engaged member) (that is, , 1st specific point), if the 1st engaging surface and the 3rd engaging surface are formed so that it may become a point on the 1st circular arc Ar11, when an engaging member rotates in a counterclockwise direction, The first specific point moves toward the third engagement surface of the engaged member. In the engagement device having this configuration, the first engagement surface and the third engagement surface can maintain the engaged state even when the engagement member tries to rotate.

In the conventional engagement device 10 of FIGS. 12, 13, and 15, the contact point 1 at the engagement point of the first engagement surface 501 and the third engagement surface 601 is the rotation center O of the engagement member 50. A line Ln13 that passes through and passes through the contact point 1 and a line that extends along the third engagement surface 601 of the engaged member 60, in other words, a line Ln11 that is a boundary between the first engagement surface 501 and the third engagement surface 601. This is a point where the angle θ1 becomes an obtuse angle exceeding 90°.

In order for at least one point (that is, the first specific point) at the engagement point between the first engagement surface and the third engagement surface to become a point on the first arc Ar11, the point passing through the rotation center O of the engagement member and the first An angle θ1 formed by a line Ln13 passing through the specific point and a line Ln11 of a boundary between the first engagement surface and the third engagement surface is an acute angle of less than 90°, and the first specific point is the first engagement surface and the first engagement surface. 3 It is necessary to exist in the engagement position with the engagement surface. That is, in the cross section of the engaging device in the state where the engaging member and the engaged member are engaged, the first engaging surface of the engaging member and the engaged member that are located relatively close to the chain 81. The engagement points on the third engagement surface of the engagement member are the straight line (Ln13) that intersects the rotation center axis of the engagement member and passes through the first specific point, and the first engagement surface and the third engagement surface. When the angle θ1 formed by the boundary line (Ln11) has an acute first specific point, the first engagement surface and the third engagement surface maintain the engaged state.

<Structure example 1 of engagement device>
FIG. 4 shows a configuration example of the engagement device 100 to which the technology disclosed herein is applied. The engaging device 100 has the engaging member 5 and the engaged member 6, as described above.

Although not shown in FIG. 4, the engagement member 5 is fixed to the chain 81 by inserting the pins 57 into the upper and lower two mounting holes 56 provided in the flange portion 55. The engagement member 5 may try to rotate in the counterclockwise direction in FIG. 4 (that is, downward) about the upper pin 57.

The engagement member 5 has a first engagement surface 51 and a second engagement surface 52 that face each other in the horizontal direction. The first engagement surface 51 and the second engagement surface 52 are flat surfaces in the configuration example of FIG. The first engagement surface 51 and the second engagement surface 52 form an opening 53 that opens upward. The position of the opening 53 is displaced in the horizontal direction with respect to the chain 81. In the engagement member 5, the first engagement surface 51 extends in the vertical direction. The second engagement surface 52 is inclined with respect to the vertical direction. The opening 53 is widened in the approaching direction of the engaged member 6 (that is, the vertical direction). The first engagement surface 51 and the second engagement surface 52 are connected via the bottom surface 59. The shape of the bottom surface 59 is not limited to a particular shape.

A slanted guide surface 54 is formed on the engaging member 5 above the first engaging surface 51. The guide surface 54 is continuous with the first engagement surface 51 and is inclined outward as it extends upward. The guide surface 54 can be omitted.

The engaged member 6 has a third engaging surface 61 that engages with the first engaging surface 51 of the engaging member 5 and a fourth engaging surface 62 that engages with the second engaging surface 52. ing. The third engagement surface 61 extends in the vertical direction. The fourth engagement surface 62 is inclined with respect to the vertical direction. The inclination angle of the second engagement surface 52 and the inclination angle of the fourth engagement surface 62 are the same in this configuration example. The third engagement surface 61 and the fourth engagement surface 62 make the cross section of the entry portion 63 of the engaged member 6 taper downward.

An inclined guide surface 64 is formed on the engaged member 6 below the third engagement surface 61. The guide surface 64 is continuous with the third engagement surface 61 and is inclined inward as it extends downward. The guide surface 54 of the engaging member 5 and the guide surface 64 of the engaged member 6 prevent the entrance portion 63 of the engaged member 6 when the engaging member 5 and the engaged member 6 engage with each other. , Can be guided to the opening 53 of the engaging member 5. The guide surface 64 can be omitted.

The contact point 1, which is the uppermost point in the engagement position between the first engagement surface 51 and the third engagement surface 61 of the engagement device 100, corresponds to the first specific point. A line Ln13 that passes through the rotation center O of the engagement member 5 and passes through the contact point 1, and a line (that is, a boundary line) Ln11 that extends along the engagement point between the first engagement surface 51 and the third engagement surface 61. The angle θ1 formed by is an acute angle of less than 90°. In addition, in illustrating the boundary line between the first engagement surface 51 and the third engagement surface 61, in FIG. 4, the boundary line between the first engagement surface 51 and the third engagement surface 61 is extended. The part indicated by "Ln11" is indicated by a broken line. Hereinafter, the Ln21 will be similarly illustrated.

In addition, the contact point 2, which is the lowest point in the engagement position between the second engagement surface 52 and the fourth engagement surface 62, corresponds to the second specific point. A line Ln23 that passes through the rotation center O of the engaging member 5 and passes through the contact point 2, and a line (that is, a boundary line) Ln21 that extends along the engagement point between the second engaging surface 52 and the fourth engaging surface 62. The angle θ2 formed by is an acute angle of less than 90°.

In the engagement device 100 having this configuration, even when the engagement member 5 is about to rotate in the counterclockwise direction, the contact point 1 approaches the third engagement surface 61 as indicated by the arrow in the enlarged view of FIG. The contact point 2 also moves in the direction of approaching the fourth engagement surface 62. The engagement device 100 does not depend on the friction between the first engagement surface 51 and the third engagement surface 61 and the friction between the second engagement surface 52 and the fourth engagement surface 62, and the engagement member 5 does not depend on the friction. The engagement between the engaged member 6 and the engaged member 6 can be maintained. Therefore, the engagement device 100 can prevent the engagement member 5 and the engaged member 6 from being disengaged while the pallet 30 is being moved up and down. The engagement device 100 for mechanical parking equipment in which the engagement member 5 and the engaged member 6 are not disengaged is realized.

The engagement device 100 of the configuration example 1 satisfies both the following condition 1 and condition 2.
Condition 1: At the engagement position between the first engagement surface 51 of the engagement member 5 and the third engagement surface 61 of the engaged member 6, the first specific point is passed through the rotation center O of the engagement member 5. There is a first specific point at which an angle θ1 formed by the passing line Ln13 and a line Ln11 at the boundary between the first engagement surface 51 and the third engagement surface 61 is an acute angle of less than 90°.
Condition 2: The engagement point between the second engagement surface 52 of the engagement member 5 and the fourth engagement surface 62 of the engaged member 6 passes through the rotation center O of the engagement member 5 and reaches the second specific point. There is a second specific point where an angle θ2 formed by the passing line Ln23 and the line Ln21 at the boundary between the second engagement surface 52 and the fourth engagement surface 62 is an acute angle of less than 90°.

It suffices that the engagement device of Structural Example 1 satisfy both Condition 1 and Condition 2, and is not limited to the shape of the engagement device 100 shown in FIG. 4. The engaging device of the configuration example 1 can also adopt the following configurations.

In the engagement device shown in FIG. 4, the first specific point (that is, the contact point 1) is the first engagement surface 51 and the first engagement surface 51 at the engagement position between the first engagement surface 51 and the third engagement surface 61. It is located at the bottom of the engagement position with the 3 engagement surface 61. Although illustration is omitted, the first specific point may be included in any position of the engaging points of the first engaging surface 51 and the third engaging surface 61. The "engagement location between the first engagement surface 51 and the third engagement surface 61" may be the location where the first engagement surface 51 and the third engagement surface 61 are in contact with each other. Similarly, at the engagement point between the second engagement surface 52 and the fourth engagement surface 62, the second specific point (that is, the contact point 2) is the second engagement surface 52 and the fourth engagement surface 62. It suffices if it is included in any position of the engaging points of. The “engagement location between the second engagement surface 52 and the fourth engagement surface 62” may be a location where the second engagement surface 52 and the fourth engagement surface 62 are in contact with each other.

Further, the number of the first specific points is not limited to one, and a plurality of the first specific points may exist at the engaging points of the first engaging surface 51 and the third engaging surface 61. A plurality of second specific points may be present at the engagement points between the second engagement surface 52 and the fourth engagement surface 62.

Furthermore, the first engagement surface 51 and the third engagement surface 61 are not limited to flat surfaces. Similarly, the second engagement surface 52 and the fourth engagement surface 62 are not limited to flat surfaces.

<Structure example 2 of engagement device>
As described above, in the engagement device 100 that satisfies both the conditions 1 and 2, the engagement member 5 and the engaged member 6 maintain the engaged state. However, as a result of further study by the inventors of the present application, if the predetermined condition is satisfied, the engagement member 5 and the engaged member 6 can be formed by satisfying only the condition 1 or the condition 2. Were found to remain engaged. Hereinafter, this will be described with reference to the drawings.

FIG. 5 shows the engagement device 101 according to the second configuration example. The dashed-dotted line in FIG. 5 indicates a state in which the engagement member 5 is engaged with the engaged member 6. The solid line in FIG. 5 shows the state after the engagement member 5 is rotated downward from the state in which the engagement member 5 is engaged with the engaged member 6.

The engagement device 101 of FIG. 5 is different in shape from the engagement device 100 of FIG. The first engagement surface 51 of the engagement member 5 is inclined with respect to the vertical direction. The third engagement surface 61 of the engaged member 6 is also inclined with respect to the vertical direction.

More specifically, the engagement device 101 of FIG. 5 has the first engagement surface 51 of the engagement member 5 and the third engagement surface of the engaged member 6 that are located relatively close to the chain 81. At an engagement position with 61, a line Ln13 that passes through the rotation center O of the engagement member 5 and passes through the contact point 1 and a line Ln11 that is a boundary between the first engagement surface 51 and the third engagement surface 61 are formed. The angle θ1 is an acute angle of less than 90°. On the other hand, at the engagement position between the second engagement surface 52 of the engagement member 5 and the fourth engagement surface 62 of the engaged member 6 that are located relatively far from the chain 81, the engagement member An angle θ2 formed by a line Ln23 passing through the rotation center O of 5 and passing through the contact point 2 and a line Ln21 at the boundary between the second engagement surface 52 and the fourth engagement surface 62 is an obtuse angle of 90° or more. ..

When the engaging member 5 tries to rotate in the counterclockwise direction, the contact point 1 tries to approach the third engaging surface 61. On the other hand, the contact point 2 tends to separate from the fourth engagement surface 62 when the engagement member 5 tries to rotate in the counterclockwise direction. The engagement device 101 of FIG. 5 satisfies only the above-mentioned condition 1. However, the engagement device 101 can maintain the engagement state between the engagement member 5 and the engaged member 6.

The amount by which the first engagement surface 51 approaches the third engagement surface 61 in the horizontal direction when it is assumed that the engagement member 5 has rotated relative to the engaged member 6 by the angle φ. The distance (approaching distance) is compared with the amount by which the second engaging surface 52 is horizontally separated from the fourth engaging surface 62 (distance). When the amount by which the contact point 1 approaches is larger than the amount by which the contact point 2 separates, the first engagement surface 51 and the third engagement surface 61 maintain the engaged state, whereby the engagement member 5 Rotation is restricted, and as a result, the second engagement surface 52 and the fourth engagement surface 62 also maintain the engaged state, so that the engagement between the engagement member 5 and the engaged member 6 is prevented. It is suppressed from coming off.

The conditions for maintaining the engaged state between the engaging member 5 and the engaged member 6 will be described with reference to FIGS. The angle φ shown in FIGS. 5 to 7 is drawn large for easy understanding. The engagement member 5 does not rotate as much as shown. When designing the engagement device 101, the angle φ may be set to, for example, about 0.001°, and the following calculation may be performed. In this way, the engagement member 5 can be designed so as not to substantially rotate.

FIG. 5 shows an XY coordinate system on which the following calculations are based. That is, the center of rotation O of the engaging member 5 is set as the origin, and the X coordinate is positive in the leftward direction and the Y coordinate is positive in the upward direction in FIG.

The contact point 1 (x1, y1) at the engagement point between the first engagement surface 51 and the third engagement surface 61 has the longest distance to approach the third engagement surface 61 when the engagement member 5 rotates. It is a point. In addition, the contact point 2 (x2, y2) at the engagement position between the second engagement surface 52 and the fourth engagement surface 62 is the most distant from the fourth engagement surface 62 when the engagement member 5 rotates. That's a short point.

As shown in an enlarged view of the vicinity of the contact point 1 in FIG. 6, the distance between the contact point 1 and the rotation center O is L1, and the engagement points of the first engagement surface 51 and the third engagement surface 61 are perpendicular to each other. The angle with respect to the direction is α1. As described above, the angle θ1 is defined by the line Ln13 that passes through the rotation center O of the engagement member 5 and the contact point 1 and the line Ln11 that is the boundary between the first engagement surface 51 and the third engagement surface 61. The angle is θ1<90°.

The coordinates (x1, y1) of the contact point 1 before rotation are given by L1, θ1, and α1.
x1=L1sin(θ1-α1), y1=L1cos(θ1-α1)
Can be expressed as

Further, assuming that the engagement member 5 is rotated by φ, the coordinates (x1′, y1′) of the contact point 1 after rotation are given by L1, θ1, α1 and φ.
x1'=L1sin(θ1-α1+φ), y1'=L1cos(θ1-α1+φ)
Can be expressed as

As shown in FIG. 6, the amount A1 by which the first engagement surface 51 moves in the horizontal direction relative to the stationary third engagement surface 61 is
A1={x1+|y1'-y1|tan(α1)}-x1'
Becomes When A1<0, the first engagement surface 51 moves in a direction approaching the third engagement surface 61. If A1>0, the first engagement surface 51 moves in a direction away from the third engagement surface 61. Note that, in FIG. 6, since the angle φ is large, the first engagement surface 51 is drawn as if it interferes with the third engagement surface 61.

Further, as shown in an enlarged view of the vicinity of the contact point 2 in FIG. 7, the distance between the contact point 2 and the rotation center O is L2, and the engagement points of the second engagement surface 52 and the fourth engagement surface 62 are , And the inclination with respect to the vertical direction is α2. As described above, the angle θ2 is defined by the line Ln23 that passes through the rotation center O of the engaging member 5 and the contact point 2 and the line Ln21 that is the boundary between the second engaging surface 52 and the fourth engaging surface 62. Angle, which is θ2>90°.

The coordinates (x2, y2) of the contact point 2 before rotation are given by L2, θ2, and α2.
x2=L2sin(θ2-α2), y2=L2cos(θ2-α2)
Can be expressed as

Further, assuming that the engaging member 5 has rotated by φ, the coordinates (x2′, y2′) of the contact point 2 after rotation are given by L2, θ2, α2 and φ.
x2'=L2sin(θ2-α2-φ), y2'=L2cos(θ2-α2-φ)
Can be expressed as

As shown in FIG. 7, the amount A2 by which the second engagement surface 52 moves in the horizontal direction relative to the stationary fourth engagement surface 62 is
A2=x2-{x2'+|y2'-y2|tan(α2+φ)}
Becomes When A2<0, the second engagement surface 52 moves in the direction away from the fourth engagement surface 62. If A2>0, the second engagement surface 52 moves toward the fourth engagement surface 62.

Therefore, the amount by which the contact point 1 approaches is greater than the amount by which the contact point 2 separates,
A1<A2
It is time to satisfy. The engagement device 101 of the configuration example 2 shown in FIG. 5 satisfies the relational expression A1<A2.

If the first engagement surface 51, the second engagement surface 52, the third engagement surface 61, and the fourth engagement surface 62 of the engagement device are configured so as to satisfy the relational expression A1<A2, the engagement member It is possible to design an engaging device in which the disengaged state between the engaged member 5 and the engaged member 6 is suppressed.

Although not shown in the drawings, contrary to FIGS. 5 to 7, the angle θ1 of the contact point 1 is an obtuse angle and the first engagement surface 51 and the third engagement surface 61 are obtuse angles, and In the engagement portion between the second engagement surface 52 and the fourth engagement surface 62, the engagement device in which the angle θ2 of the contact point 2 is an acute angle also satisfies the above relational expression A1<A2. If the mating surface 51, the second engagement surface 52, the third engagement surface 61, and the fourth engagement surface 62 are configured, the engagement member 5 and the engaged member 6 are prevented from being disengaged from each other. be able to.

In the engagement device 100 of the configuration example 1 shown in FIG. 4, the angle θ1 of the contact point 1 at the engagement portion between the first engagement surface 51 and the third engagement surface 61 is an acute angle, and the second engagement is performed. The angle θ2 of the contact point 2 at the engagement portion between the surface 52 and the fourth engagement surface 62 is an acute angle. The engagement device 100 always satisfies the relational expression A1<A2 (since A1 becomes negative and A2 becomes positive).

On the contrary, the angle θ1 of the contact point 1 at the engagement point between the first engagement surface 51 and the third engagement surface 61 is an obtuse angle, and the engagement between the second engagement surface 52 and the fourth engagement surface 62. The engagement device in which the angle θ2 of the contact point 2 at the point is an obtuse angle does not satisfy the above relational expression A1<A2 (since A1 becomes positive and A2 becomes negative).

The engagement device that satisfies the above-described relational expression A1<A2 is included in the category of Configuration Example 2. The engagement device of the configuration example 2 is not limited to the shape of the engagement device 101 shown in FIG. For example, the first engagement surface and the third engagement surface are not limited to flat surfaces. Similarly, the second engagement surface and the fourth engagement surface are not limited to flat surfaces.

(Structure for Engagement of Engagement Member and Engagement Member)
When the engaging member 5 and the engaged member 6 engage with each other, the engaging devices 100 and 101 of the above-described configuration examples 1 and 2 try to rotate the engaging member 5 fixed to the chain 81. Also, the engaging member 5 and the engaged member 6 maintain the engaged state. However, even in the engagement devices 100 and 101 of the configuration example 1 and the configuration example 2, the engagement between the engagement member 5 and the engaged member 6 may be disengaged while the pallet 30 is moved up and down. The inventors have noticed. As a result of the inventors' investigation of the cause, it has been found that the engagement between the engaging member 5 and the engaged member 6 is disengaged due to the following causes.

That is, the mechanical parking equipment 1 illustrated in FIGS. 1 and 2 and the mechanical parking equipment described in Patent Document 1 have guide rails (for example, a guide rail for supporting the engagement member 5 fixed to the chain 81). It does not have a guide rail as described in Patent Document 2. Since the position of the center of gravity of the engaging member 5 is displaced in the horizontal direction with respect to the chain 81, a downward moment acts on the engaging member 5. Although the tension applied to the chain 81 opposes the moment, the engagement member 5 tries to maintain the posture horizontally, but unless the tension applied to the chain 81 is infinite, the engagement member 5 is mechanically moved. The posture of 5 cannot be horizontal. Therefore, the engaging member 5 before engaging with the engaged member 6 is always slightly inclined, and due to the relationship between the weight of the engaging member 5 and the tension, for example, about 1 to 5° is downward (that is, in FIG. 4 and the like). Counterclockwise).

The engaging member 5 engages with the engaged member 6 of the stopped pallet 30 by moving relatively from the bottom to the top. If the engaging member 5 before engaging is inclined downward, the engaging member 5 and the engaged member 6 may not be engaged properly due to the difference in angle between the engaging member 5 and the engaged member 6. There is.

In the engagement devices 100 and 101 of the configuration example 1 and the configuration example 2, the engagement points of the first engagement surface 51 and the third engagement surface 61 are configured such that the angle θ1 of the first specific point is an acute angle. doing. However, if the engaging member 5 and the engaged member 6 are engaged with each other with a different angle, the angle θ1 of the first specific point may be an obtuse angle. In addition, even if the engaging portion between the second engaging surface 52 and the fourth engaging surface 62 is configured such that the angle θ2 of the second specific point becomes an acute angle, the engaging member 5 and the engaged member When 6 and 6 are engaged with each other with an angular deviation, the angle θ2 of the second specific point may be an obtuse angle. Then, even in the engagement devices 100 and 101 of the configuration example 1 and the configuration example 2, when the engagement member 5 is rotated by an external force or the like, the engagement between the engagement member 5 and the engaged member 6 is disengaged. It will end up.

The engagement device 102 shown in FIG. 8 is an example of an engagement device configured such that the engagement member 5 and the engaged member 6 are properly engaged with each other.

The engagement device 102 is tilted upward (that is, clockwise in FIG. 8) when the opening 53 of the engagement member 5 is not engaged with the engaged member 6.

The dashed-dotted line in FIG. 8 indicates a state in which the opening 53 of the engaging member 5 is not tilted. The state in which the opening 53 is not tilted means the orientation of the third engagement surface 61 and the fourth engagement surface 62 of the engaged member 6 of the pallet 30 which is maintained horizontally, as shown in FIG. Means that the orientations of the first engagement surface 51 and the second engagement surface 52 of the engagement member 5 match.

In the engagement member 5 shown by the solid line in FIG. 8, the orientations of the first engagement surface 51 and the second engagement surface 52 are the orientations of the third engagement surface 61 and the fourth engagement surface 62 of the engaged member 6. Is different from. Specifically, the first engagement surface 51 and the second engagement surface 52 are inclined in the clockwise direction in FIG. 8 by a predetermined angle θ3. The angle θ3 may be set to about 5°.

That is, in the engagement member 5, the first engagement surface 51 and the second engagement surface 52 are the third engagement surface 61 and the fourth engagement surface 62 in the state where the engagement member 5 is not engaged with the engaged member 6. On the other hand, the engaging member 5 is inclined upward by the predetermined angle θ3 in the direction of rotation.

It should be noted that FIG. 8 shows a state in which the chain 81 is stretched straight, and the engaging member 5 is not rotating downward.

With this configuration, when the engaging member 5 is not engaged with the engaged member 6 and rotates downward due to its own weight, the angle of the opening 53 is the angle of the entering portion 63 of the engaged member 6. To match. As a result, the engaging member 5 and the engaged member 6 are properly engaged.

Alternatively, when the engaging member 5 does not rotate downward due to its own weight and the angle of the opening 53 is rotating upward, the entrance 63 of the engaged member 6 causes the opening 63 of the engaging member 5 to open. Part of the entry portion 63 comes into contact with the first engagement surface 51, the second engagement surface 52, and the guide surface 54, and the engagement member 5 rotates downward accordingly. The engaging member 5 and the engaged member 6 are engaged with each other. As a result, the first engagement surface 51 and the third engagement surface 61 are properly engaged, and the second engagement surface 52 and the fourth engagement surface 62 are appropriately engaged. The engagement between the engaging member 5 and the engaged member 6 is completed.

That is, in any case, when the engaging member 5 and the engaged member 6 are engaged with each other, they are appropriately engaged with each other.

The engagement device 102 of FIG. 8 is, similar to the engagement device 100 shown in FIG. 4, an engagement point between the first engagement surface 51 of the engagement member 5 and the third engagement surface 61 of the engaged member 6. In, the angle θ1 formed by the line Ln13 passing through the rotation center O of the engaging member 5 and passing through the first specific point and the line of the boundary between the first engaging surface 51 and the third engaging surface 61 is less than 90°. The rotation center of the engaging member 5 at the engagement point between the second engaging surface 52 of the engaging member 5 and the fourth engaging surface 62 of the engaged member 6 A second specific point at which an angle θ2 formed by a line Ln23 passing through O and passing through the second specific point and a boundary line between the second engaging surface 52 and the fourth engaging surface 62 is an acute angle of less than 90° Have

Therefore, if the engaging member 5 and the engaged member 6 are properly engaged, it is possible to prevent the engaging member 5 and the engaged member 6 from being disengaged while the pallet 30 is moved up and down. .. By combining the configuration in which the engaging member 5 and the engaged member 6 are properly engaged with the configuration in which the engagement member 5 and the engaged member 6 are prevented from being disengaged from each other, It is possible to more effectively prevent the engagement member 5 and the engaged member 6 from disengaging from each other during lifting and lowering.

Although illustration is omitted, a configuration in which the engaging member 5 and the engaged member 6 are appropriately engaged may be combined with a configuration in which the relational expression A1<A2 described above is satisfied. Further, the configuration for appropriately engaging the engaging member 5 and the engaged member 6 needs to be combined with the configuration for suppressing the disengagement of the engaging member 5 and the engaged member 6 from each other. There is no.

FIG. 9 shows a second configuration example in which the engaging member 5 and the engaged member 6 are properly engaged. The engaging member 5 of the engaging device 103 of FIG. 9 is configured to be fixed to the chain 81 in a state in which the entire engaging member 5 is rotated upward instead of rotating the opening 53 upward. ing. Specifically, the positions of the upper and lower two mounting holes 56 provided in the flange portion 55 of the engaging member 5 are horizontally shifted. As a result, the opening 53 of the engaging member 5 rotates in the clockwise direction relative to the engaged member 6 of the pallet 30 by the predetermined angle θ3, similarly to the engaging member 5 of FIG.

That is, in the engagement member 5, the first engagement surface 51 and the second engagement surface 52 are the third engagement surface 61 and the fourth engagement surface 62 in the state where the engagement member 5 is not engaged with the engaged member 6. On the other hand, the engaging member 5 is inclined upward by the predetermined angle θ3 in the direction of rotation.

In the engaging device 103 including the engaging member 5, the engaging member 5 and the engaged member 6 are properly engaged, as in the engaging device 102 of FIG.

The engagement device 103 of FIG. 9 is similar to the engagement device 100 shown in FIG. 4 in that the first engagement surface 51 of the engagement member 5 and the third engagement surface 61 of the engaged member 6 are engaged with each other. At the joint point, an angle θ1 formed by a line Ln13 passing through the rotation center O of the engaging member 5 and passing through the first specific point and a line of a boundary between the first engaging surface 51 and the third engaging surface 61 is 90. The engaging member 5 has a first specific point with an acute angle of less than °, and at the engagement position between the second engaging surface 52 of the engaging member 5 and the fourth engaging surface 62 of the engaged member 6. A second specification in which an angle θ2 formed by a line Ln23 passing through the rotation center O and passing through the second specific point and a boundary line between the second engagement surface 52 and the fourth engagement surface 62 is an acute angle of less than 90°. Have a point.

Therefore, if the engaging member 5 and the engaged member 6 are properly engaged, it is possible to prevent the engaging member 5 and the engaged member 6 from being disengaged while the pallet 30 is moved up and down. ..

Although not shown in the drawings, the configuration in which the engagement member 5 and the engaged member 6 shown in FIG. 9 are appropriately engaged with each other may be combined with the configuration in which the relational expression A1<A2 described above is satisfied. Good. Further, the configuration for properly engaging the engaging member 5 and the engaged member 6 shown in FIG. 9 is a configuration for suppressing disengagement of the engaging member 5 and the engaged member 6 from each other. , Need not be combined.

The configuration shown in FIG. 8 or FIG. 9 is suitable for the engagement member 5 and the engaged member 6 without combining with the configuration for suppressing the engagement between the engagement member 5 and the engaged member 6 from being disengaged. Has the advantage that it can be engaged with. As a result of the engaging member 5 and the engaged member 6 being appropriately engaged, disengagement of the engaging member 5 and the engaged member 6 is suppressed. Further, since the engaging member 5 attached to the chain 81 can be appropriately engaged with the engaged member 6, the mechanical parking facility 1 has the guide rail as described in Patent Document 2. Can be omitted.

(Modification of the engagement device)
FIG. 10 shows a modification of the engagement device 104. In the engagement member 5 of FIG. 10, the first engagement surface 51 close to the chain 81 is inclined with respect to the vertical direction, and the second engagement surface 52 separated from the chain 81 extends along the vertical direction. There is. The opening 53 is widened in the approaching direction of the engaged member 6 (that is, the vertical direction). A guide surface 54 is formed on the upper side of the second engagement surface 52.

The engaged member 6 has a third engaging surface 61 that engages with the first engaging surface 51 of the engaging member 5 and a fourth engaging surface 62 that engages with the second engaging surface 52. Have The third engagement surface 61 is inclined with respect to the vertical direction. The fourth engagement surface 62 extends in the vertical direction.

Further, the engagement device 104 of FIG. 10 also has a rotation center O of the engagement member 5 at the engagement position between the first engagement surface 51 of the engagement member 5 and the third engagement surface 61 of the engaged member 6. There is a first specific point at which an angle θ1 formed by a line Ln13 passing through and passing through the first specific point and a boundary line between the first engagement surface 51 and the third engagement surface 61 is an acute angle of less than 90°. At the same time, the second engagement point 52 of the engagement member 5 and the fourth engagement surface 62 of the engaged member 6 pass through the rotation center O of the engagement member 5 and reach the second specific point. There is a second specific point where an angle θ2 formed by the passing line Ln23 and the line of the boundary between the second engagement surface 52 and the fourth engagement surface 62 is an acute angle of less than 90°.

The engagement device 104 of FIG. 10 may be configured to satisfy the above-described relational expression A1<A2.

The engaging member 5 of FIG. 10 also rotates the opening 53 upward (see the alternate long and short dash line), similarly to the engaging member 5 of FIG. With this configuration, the engaging member 5 and the engaged member 6 are properly engaged.

Although illustration is omitted, in the engaging member 5 having the shape shown in FIG. 10, the positions of the mounting holes 56 may be shifted in the horizontal direction as shown in FIG.

FIG. 11 shows another modification of the engagement device 105. In the engagement device 105 of FIG. 11, the engaged member 6 attached to the pallet 30 has a hook shape having an opening 68 that opens downward. In the engagement device 105 of FIG. 11, the shape of the engagement member 5 and the shape of the engaged member 6 are replaced with each other in the engagement device 100 of FIG. 4. The engagement member 5 attached to the chain 81 has a shape having an entry portion 58 that enters the opening portion 68. In the engagement device 105 having this configuration, at the engagement position between the first engagement surface 51 of the engagement member 5 and the third engagement surface 61 of the engaged member 6 that are located relatively far from the chain 81. The angle θ1 formed by the line Ln13 passing through the rotation center O of the engagement member 5 and passing through the first specific point and the line of the boundary between the first engagement surface 51 and the third engagement surface 61 is less than 90°. The first specific point having an acute angle is present, and the engagement between the second engagement surface 52 of the engagement member 5 and the fourth engagement surface 62 of the engaged member 6 located relatively close to the chain 81. At the joint, the angle θ2 formed by the line Ln23 passing through the rotation center O of the engaging member 5 and passing through the second specific point and the line of the boundary between the second engaging surface 52 and the fourth engaging surface 62 is 90. There is a second specific point with an acute angle of less than °,
Note that the engaging device 105 of FIG. 11 may be configured to satisfy the above-described relational expression A1<A2, as in the engaging device 101 of FIG. 5, for example.

Further, the engaging member 5 of FIG. 11 may also rotate the entrance portion 58 upward, similarly to the engaging member 5 of FIG. With this configuration, the engaging member 5 and the engaged member 6 are properly engaged with each other. Although illustration is omitted, in the engaging member 5 having the shape shown in FIG. 11, the mounting holes 56 may be provided so as to be displaced in the horizontal direction as shown in FIG.

(Other embodiments)
The engagement device disclosed herein can also be applied to mechanical parking equipment other than the configuration shown in FIGS. 1 and 2. For example, a guide rail for keeping the posture of the engaging member 5 fixed to the chain 81 horizontal may be provided. By doing so, the engagement member 5 is prevented from rotating. As described above, the engagement member 5 is prevented from being disengaged from the engaged member 6, and therefore, when the engagement devices disclosed herein are combined with the guide rails, the engagement member 5 is released. Can reduce the force applied to the guide rail.

Further, the features of the engaging devices described above can be combined with each other to the extent possible.

DESCRIPTION OF SYMBOLS 1 Mechanical parking equipment 100-105 Engaging device 30 Pallet 5 Engaging member 51 First engaging surface 52 Second engaging surface 53 Opening 58 Entry 6 Engagement member 61 Third engaging surface 62 Fourth engaging Mating surface 63 Entry portion 68 Opening portion 80 Lifting device 81 Chain (cord)
V car

Claims (5)

A pallet with a car,
An elevating device that has a cord-shaped body stretched in the up-and-down direction, and that raises and lowers the pallet when the cord-shaped body travels;
An engaging device for releasably engaging the pallet and the cord-like body,
The engagement device is
An engaging member that is attached to the cord-shaped body and moves in the vertical direction by traveling of the cord-shaped body, and that has two engagement surfaces, a first engagement surface and a second engagement surface,
An engaged member that is attached to the pallet and that has two engaging surfaces, a third engaging surface that engages the first engaging surface and a fourth engaging surface that engages the second engaging surface. And a combination member,
One of the engaging member and the engaged member has a hook shape in which a cross section has an opening formed at a position shifted in the horizontal direction with respect to the cord by two engaging surfaces facing each other,
The other of the engagement member and the engaged member is formed by two back-to-back engaging surfaces, and is formed in the opening when the engaging member and the engaged member vertically engage with each other. It is a shape that has an entry part that relatively enters,
At least one of the two engagement surfaces forming the opening is inclined so that the opening expands in the approach direction of the entrance,
The engagement member is rotatable downward about a predetermined horizontal axis intersecting the cord-like body,
In the cross section of the engagement device in the state where the engagement member and the engaged member are engaged, the engagement points of the first engagement surface and the third engagement surface intersect the horizontal axis. The straight line passing through the first specific point and the line of the boundary between the first engaging surface and the third engaging surface has an acute angle, the first specific point,
In the cross section of the engagement device in the state where the engagement member and the engaged member are engaged, the engagement points of the second engagement surface and the fourth engagement surface intersect the horizontal axis. And a mechanical parking facility having the second specific point whose angle formed by a straight line passing through the second specific point and the line of the boundary between the second engagement surface and the fourth engagement surface is an acute angle. .. A pallet with a car,
An elevating device that has a cord-shaped body stretched in the up-and-down direction, and that raises and lowers the pallet when the cord-shaped body travels;
An engaging device for releasably engaging the pallet and the cord-like body,
The engagement device is
An engaging member that is attached to the cord-shaped body and moves in the vertical direction by traveling of the cord-shaped body, and that has two engagement surfaces, a first engagement surface and a second engagement surface,
An engaged member that is attached to the pallet and that has two engaging surfaces, a third engaging surface that engages the first engaging surface and a fourth engaging surface that engages the second engaging surface. And a combination member,
The engagement member has a hook shape whose cross section has an opening formed at a position displaced in the horizontal direction with respect to the cord by two engagement surfaces facing each other,
The engaged member is formed by two back-to-back engaging surfaces, and the engaging portion relatively enters the opening when the engaging member and the engaged member engage in the vertical direction. Is a shape having
At least one of the two engagement surfaces forming the opening is inclined so that the opening expands in the approach direction of the entrance,
The engagement member is rotatable downward about a predetermined horizontal axis intersecting the cord-like body,
In the cross section of the engagement device in which the engagement member and the engaged member are engaged, the first engagement surface and the third engagement surface located relatively close to the cord-like body. And the engagement points of the second engagement surface and the fourth engagement surface located relatively far from the cord-like body are configured to satisfy the relational expression A1<A2. Mechanical parking facilities.
A1 is the first engaging member when it is assumed that the engaging member is rotated downward by φ around the horizontal axis from a state where the engaging member and the engaged member are engaged with each other. The amount by which the mating surface moves in the horizontal direction relative to the stationary third engaging surface.
A1={x1+|y1'-y1|tan(α1)}-x1'
However, (x1, y1) is the XY coordinate system with the horizontal axis as the origin, the horizontal direction as X, and the vertical direction as Y, and the first engaging surface and the above before the engaging member rotates. The coordinates of the point 1 included in the engagement position of the third engagement surface, (x1′, y1′) are the coordinates of the point 1 after the engagement member is rotated, and α1 is the first It is the angle of the engagement points of the first engagement surface and the third engagement surface with respect to the vertical direction. When A1<0, the first engagement surface moves toward the third engagement surface.
A2 is the second engagement member when it is assumed that the engagement member has rotated downward by φ around the horizontal axis from the state in which the engagement member and the engaged member are engaged. The amount by which the mating surface moves in the horizontal direction relative to the stationary fourth engagement surface.
A2=x2-{x2'+|y2'-y2|tan(α2+φ)}
However, (x2, y2) is the coordinate of the point 2 included in the engagement portion of the second engagement surface and the fourth engagement surface before the engagement member rotates in the XY coordinate system. Yes, (x2′, y2′) is the coordinates of the point 2 after the engagement member is rotated, and α2 is the engagement location of the second engagement surface and the fourth engagement surface, It is an angle with respect to the vertical direction. When A2<0, the second engagement surface moves in the direction away from the fourth engagement surface. A pallet with a car,
An elevating device that has a cord-shaped body stretched in the up-and-down direction, and that raises and lowers the pallet when the cord-shaped body travels;
An engaging device for releasably engaging the pallet and the cord-like body,
The engagement device is
An engaging member that is attached to the cord-shaped body and moves in the vertical direction by traveling of the cord-shaped body, and that has two engagement surfaces, a first engagement surface and a second engagement surface,
An engaged member that is attached to the pallet and that has two engaging surfaces, a third engaging surface that engages the first engaging surface and a fourth engaging surface that engages the second engaging surface. And a combination member,
The engaged member has a hook shape whose cross section has an opening formed at a position horizontally displaced from the cord by two engaging surfaces facing each other.
The engagement member is formed by two back-to-back engagement surfaces, and has an entrance portion that relatively enters the opening when the engagement member and the engaged member are engaged in the vertical direction. Is a shape that has
At least one of the two engagement surfaces forming the opening is inclined so that the opening expands in the approach direction of the entrance,
The engagement member is rotatable downward about a predetermined horizontal axis intersecting the cord-like body,
In the cross section of the engagement device in which the engagement member and the engaged member are engaged, the first engagement surface and the third engagement surface located relatively far from the cord-like body. And the engagement points of the second engagement surface and the fourth engagement surface located relatively close to the cord-like body are configured to satisfy the relational expression A1<A2. Mechanical parking facilities.
A1 is the first engaging member when it is assumed that the engaging member is rotated downward by φ around the horizontal axis from a state where the engaging member and the engaged member are engaged with each other. The amount by which the mating surface moves in the horizontal direction relative to the stationary third engaging surface.
A1={x1+|y1'-y1|tan(α1)}-x1'
However, (x1, y1) is the XY coordinate system with the horizontal axis as the origin, the horizontal direction as X, and the vertical direction as Y, and the first engaging surface and the above before the engaging member rotates. The coordinates of the point 1 included in the engagement position of the third engagement surface, (x1′, y1′) are the coordinates of the point 1 after the engagement member is rotated, and α1 is the first It is the angle of the engagement points of the first engagement surface and the third engagement surface with respect to the vertical direction. When A1<0, the first engagement surface moves toward the third engagement surface.
A2 is the second engagement member when it is assumed that the engagement member has rotated downward by φ around the horizontal axis from a state where the engagement member and the engaged member are engaged. The amount by which the mating surface moves in the horizontal direction relative to the stationary fourth engaging surface.
A2=x2-{x2'+|y2'-y2|tan(α2+φ)}
However, (x2, y2) is the coordinate of the point 2 included in the engaging portion of the second engaging surface and the fourth engaging surface before the engaging member rotates in the XY coordinate system. Yes, (x2′, y2′) is the coordinates of the point 2 after the engagement member is rotated, and α2 is the engagement location of the second engagement surface and the fourth engagement surface, It is an angle with respect to the vertical direction. When A2<0, the second engagement surface moves in a direction away from the fourth engagement surface. The mechanical parking facility according to any one of claims 1 to 3,
In the state where the engagement member is not engaged with the engaged member, the first engagement surface and the second engagement surface are different from the third engagement surface and the fourth engagement surface. A mechanical parking facility configured such that the engaging member is inclined by a predetermined angle in a direction in which the engaging member rotates upward about the horizontal axis. A pallet with a car,
An elevating device that has a cord-shaped body stretched in the up-and-down direction, and that raises and lowers the pallet when the cord-shaped body travels;
An engaging device for releasably engaging the pallet and the cord-like body,
The engagement device is
An engaging member that is attached to the cord-shaped body and moves in the vertical direction by traveling of the cord-shaped body, and that has two engagement surfaces, a first engagement surface and a second engagement surface,
An engaged member that is attached to the pallet and that has two engaging surfaces, a third engaging surface that engages the first engaging surface and a fourth engaging surface that engages the second engaging surface. And a combination member,
One of the engaging member and the engaged member has a hook shape in which a cross section has an opening formed at a position shifted in the horizontal direction with respect to the cord by two engaging surfaces facing each other,
The other of the engagement member and the engaged member is formed by two back-to-back engaging surfaces, and is formed in the opening when the engaging member and the engaged member vertically engage with each other. It is a shape that has an entry part that relatively enters,
At least one of the two engagement surfaces forming the opening is inclined so that the opening expands in the approach direction of the entrance,
The engagement member is rotatable downward about a predetermined horizontal axis intersecting the cord-like body,
In the state where the engagement member is not engaged with the engaged member, the first engagement surface and the second engagement surface are different from the third engagement surface and the fourth engagement surface. A mechanical parking facility configured such that the engaging member is inclined by a predetermined angle in a direction in which the engaging member rotates upward about the horizontal axis.

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