JP7232634B2 - mechanical parking equipment - Google Patents

Description

Article 30, Paragraph 2 of the Patent Act applies.

The technology disclosed herein relates to mechanical parking equipment.

Patent Literature 1 describes a mechanical parking facility. A mechanical parking facility includes a pallet on which automobiles are mounted and a lifting device that lifts and lowers the pallet. The pallet and the lifting device are releasably engaged with each other by an engaging device. The lifting device has chains stretched vertically at the four corners of the pallet. The engaging device has an engaging member (locking hook 81) and an engaged member (locking member 31) that engages with the engaging member. An engagement 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 while the engaging member and the engaged member are engaged, the pallet moves up and down.

The mechanical parking facility described in Patent Document 2 is configured such that a guide rail 65 guides an engaging member (elevating rail 60) fixed to a chain. The guide rail 65 extends vertically along the chain. A pair of guide rollers 64 are attached to the engaging member so as to engage with the guide rail 65 therebetween. By engaging the guide rail 65 and the guide roller 64, the engaging member fixed to the chain maintains its posture horizontally.

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

The inventors of the present application have found that the engaging device described in Patent Document 1 sometimes disengages the engaging member from the engaged member while the pallet is being moved up and down.

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

Specifically, the mechanical parking facility disclosed herein has a pallet on which an automobile is mounted and a cord-like body stretched in the vertical direction, and the pallet is lifted and lowered by the movement of the cord-like body. An elevating device and an engaging device for releasably engaging the pallet and the cord-like body are provided.

The engaging device is attached to the cord-like body, moves vertically as the cord-like body travels, and is an engaging member having two engaging surfaces, a first engaging surface and a second engaging surface. and attached to the pallet, and has two engagement surfaces: a third engagement surface that engages with the first engagement surface, and a fourth engagement surface that engages with the second engagement surface and a member to be engaged, one of the engaging member and the member to be engaged has its cross section opened at a position horizontally displaced from the cord-like body by two opposing engaging surfaces. The other of the engaging member and the engaged member is formed by two engaging surfaces facing each other back to back, and the engaging member and the engaged member extend vertically. The shape has an entry portion that enters relative to the opening when engaging the opening.

At least one of the two engaging surfaces forming the opening is inclined so as to widen the opening with respect to the entering direction of the entering portion, and the engaging member has a predetermined It is rotatable downward about a horizontal axis.

In a cross-section of the engaging device in which the engaging member and the engaged member are engaged, the engagement locations of the first engaging surface and the third engaging surface are aligned with the horizontal axis. and the straight line passing through the first specific point and the boundary line between the first engaging surface and the third engaging surface below the first specific point form an acute angle. In a cross section of the engaging device having a point and in a state where the engaging member and the engaged member are engaged, the engagement locations of the second engaging surface and the fourth engaging surface are: an acute angle between a straight line that intersects the horizontal axis and passes through the second specific point and a boundary line between the second engaging surface and the fourth engaging surface above the second specific point; It has a second specific point.

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, and a lifting device that has a rope-like body stretched in the vertical direction and lifts and lowers the pallet by running the cord-like body. and an engaging device for releasably engaging the pallet and the cord-like body.

The engaging device is attached to the cord-like body, moves vertically as the cord-like body travels, and is an engaging member having two engaging surfaces, a first engaging surface and a second engaging surface. and attached to the pallet, and has two engagement surfaces: a third engagement surface that engages with the first engagement surface, and a fourth engagement surface that engages with the second engagement surface and a member to be engaged, wherein the cross section of the engaging member has a hook shape in which two opposing engaging surfaces form an opening at a position offset in the horizontal direction with respect to the cord-like body. wherein the member to be engaged is formed by two engaging surfaces facing back to each other, and enters relatively into the opening when the engaging member and the member to be engaged engage in the vertical direction. It has a shape with an entry part.

At least one of the two engaging surfaces forming the opening is inclined so as to widen the opening with respect to the entering direction of the entering portion, and the engaging member has a predetermined It is rotatable downward about a horizontal axis.

In a cross section of the engaging device where the engaging member and the engaged member are engaged, the first engaging surface and the third engaging surface are located relatively close to the cord-like body. The engagement points of the mating surfaces, and the engagement points of the second engagement surface and the fourth engagement surface located relatively far from the cord-like body are arranged so as to satisfy the relational expression A1<A2. It is configured.

Here, A1 is the above-described second The amount by which one engagement surface moves relative to the stationary third engagement surface in the horizontal direction.

A1={x1+|y1′−y1|tan(α1)}−x1′
However, (x1, y1) is the first engaging surface and the (x1', y1') are the coordinates of the point 1 included in the engagement location of the third engagement surface, (x1', y1') are the coordinates of the point 1 after the rotation of the engagement member, and α1 is the third It is the angle of the engagement points of the first engagement surface and the third engagement surface with respect to the vertical direction. Further, when A1<0, the first engaging surface moves toward the third engaging surface , and the point 1 approaches the third engaging surface when the engaging member rotates. It is the point with the longest distance, and when A1>0, the first engaging surface moves away from the third engaging surface, and the point 1 moves away from the third engaging surface when the engaging member rotates. 3 It is the shortest distance away from the engagement surface .

A2 is the second The amount by which the engagement surface moves horizontally relative to the fourth engagement surface, which remains stationary.

A2=x2-{x2'+|y2'-y2|tan(α2+φ)}
However, (x2, y2) are the coordinates of point 2 included in the engagement location of the second engagement surface and the fourth engagement surface before the engagement member rotates in the XY coordinate system. where (x2′, y2′) are the coordinates of the point 2 after the engagement member has rotated, α2 is the engagement point of the second engagement surface and the fourth engagement surface, It is the angle with respect to the vertical direction. Further, when A2<0, the second engaging surface moves away from the fourth engaging surface, and the point 2 moves away from the fourth engaging surface when the engaging member rotates. It is the point with the shortest distance, and when A2>0, the second engaging surface moves toward the fourth engaging surface, and the point 2 moves toward the fourth engaging surface when the engaging member rotates. 4 This is the point where the distance approaching the engagement surface is the longest .

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

The mechanical parking equipment disclosed herein further comprises a pallet on which an automobile is mounted, and a lifting device that has a rope-like body stretched in the vertical direction and lifts and lowers the pallet by running the cord-like body. and an engaging device for releasably engaging the pallet and the cord-like body.

The engaging device is attached to the cord-like body, moves vertically as the cord-like body travels, and is an engaging member having two engaging surfaces, a first engaging surface and a second engaging surface. and attached to the pallet, and has two engagement surfaces: a third engagement surface that engages with the first engagement surface, and a fourth engagement surface that engages with the second engagement surface a hook-shaped cross-section of the engaged member formed with an opening at a position offset in the horizontal direction with respect to the cord-like body by two engaging surfaces facing each other; wherein the engaging member is formed by two engaging surfaces facing back to each other, and enters relatively into the opening when the engaging member and the engaged member are vertically engaged with each other. It has a shape with an entry part.

At least one of the two engaging surfaces forming the opening is inclined so as to widen the opening with respect to the entering direction of the entering portion, and the engaging member has a predetermined It is rotatable downward about a horizontal axis.

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

Here, A1 is the above-described second The amount by which one engagement surface moves relative to the stationary third engagement surface in the horizontal direction.

A1={x1+|y1′−y1|tan(α1)}−x1′
However, (x1, y1) is the first engaging surface and the (x1', y1') are the coordinates of the point 1 included in the engagement location of the third engagement surface, (x1', y1') are the coordinates of the point 1 after the rotation of the engagement member, and α1 is the third It is the angle of the engagement points of the first engagement surface and the third engagement surface with respect to the vertical direction. Further, when A1<0, the first engaging surface moves toward the third engaging surface , and the point 1 approaches the third engaging surface when the engaging member rotates. It is the point with the longest distance, and when A1>0, the first engaging surface moves away from the third engaging surface, and the point 1 moves away from the third engaging surface when the engaging member rotates. 3 It is the shortest distance away from the engagement surface .

A2 is the second The amount by which the engagement surface moves horizontally relative to the fourth engagement surface, which remains stationary.

A2=x2-{x2'+|y2'-y2|tan(α2+φ)}
However, (x2, y2) are the coordinates of point 2 included in the engagement location of the second engagement surface and the fourth engagement surface before the engagement member rotates in the XY coordinate system. where (x2′, y2′) are the coordinates of the point 2 after the engagement member has rotated, α2 is the engagement point of the second engagement surface and the fourth engagement surface, It is the angle with respect to the vertical direction. Further, when A2<0, the second engaging surface moves away from the fourth engaging surface, and the point 2 moves away from the fourth engaging surface when the engaging member rotates. It is the point with the shortest distance, and when A2>0, the second engaging surface moves toward the fourth engaging surface, and the point 2 moves toward the fourth engaging surface when the engaging member rotates. 4 This is the point where the distance approaching the engagement surface is the longest .

The engaging member is in a state in which it is not engaged with the member to be engaged and before it rotates downward due to its own weight, or a state in which it is not engaged with the member to be engaged. and the first engaging surface and the second engaging surface are aligned with the third engaging surface and the fourth engaging surface in a state prior to downward rotation due to engagement with the engaged member Alternatively, the engaging member may be configured to be inclined by a predetermined angle in a direction in which the engaging member rotates upward about the horizontal axis.

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

The mechanical parking equipment disclosed herein further comprises a pallet on which an automobile is mounted, and a lifting device that has a rope-like body stretched in the vertical direction and lifts and lowers the pallet by running the cord-like body. and an engaging device for releasably engaging the pallet and the cord-like body.

The engaging device is attached to the cord-like body, moves vertically as the cord-like body travels, and is an engaging member having two engaging surfaces, a first engaging surface and a second engaging surface. and attached to the pallet, and has two engagement surfaces: a third engagement surface that engages with the first engagement surface, and a fourth engagement surface that engages with the second engagement surface and a member to be engaged, one of the engaging member and the member to be engaged has its cross section opened at a position horizontally displaced from the cord-like body by two opposing engaging surfaces. The other of the engaging member and the engaged member is formed by two engaging surfaces facing each other back to back, and the engaging member and the engaged member extend vertically. The shape has an entry portion that enters relative to the opening when engaging the opening.

At least one of the two engaging surfaces forming the opening is inclined so as to widen the opening with respect to the entering direction of the entering portion, and the engaging member has a predetermined It is rotatable downward about a horizontal axis.

The engaging member is in a state in which it is not engaged with the member to be engaged and before being rotated downward by its own weight, or in a state in which it is engaged with the member to be engaged. In a state in which the first engaging surface and the second engaging surface are not in a state of being disengaged and before being rotated downward by engagement with the engaged member, the first engaging surface and the second engaging surface are aligned with the third and fourth engaging surfaces. The engaging member is configured to be inclined by a predetermined angle with respect to the mating surface in a direction in which the engaging member rotates upward about the horizontal axis.

According to this configuration, as described above, when the engaging member and the engaged member are engaged with each other, the engaging member and the engaged member can be properly engaged. As a result, disengagement of the engaging device is suppressed.

As described above, the mechanical parking equipment can prevent disengagement between the engaging member and the engaged member during lifting and lowering of the pallet.

1 is a front view illustrating a mechanical parking facility; FIG. FIG. 2 is a side view of the mechanical parking facility. FIG. 3 is a perspective view showing a state in which an engaging member attached to a chain and an engaged member attached to a pallet are engaged. 4A and 4B are a cross-sectional view and an enlarged view of the engaging device of Configuration Example 1. FIG. FIG. 5 is a cross-sectional view of the engaging device of Configuration Example 2, showing the coordinates of the contact point 1 and the contact point 2 when it is assumed that the engaging member is rotated by a predetermined angle with respect to the engaged member. be. FIG. 6 is an enlarged view of the vicinity of contact point 1 in FIG. FIG. 7 is an enlarged view of the vicinity of contact point 2 in FIG. FIG. 8 is a cross-sectional view illustrating a configuration in which the opening of the engaging member is rotated; FIG. 9 is a cross-sectional view illustrating a configuration in which the mounting holes of the engaging member are shifted. FIG. 10 is a cross-sectional view illustrating an engagement device having a configuration different from that of FIGS. 4 and 5. FIG. 11 is a cross-sectional view illustrating an engagement device having a configuration different from that of FIGS. 4, 5 and 10. FIG. FIG. 12 is a cross-sectional view showing the configuration of a conventional engaging device. 13A and 13B are diagrams for explaining the reason why the engagement device of FIG. 12 is disengaged. 14 is an enlarged view of the vicinity of the contact point 2 in FIG. 13. FIG. 15 is an enlarged view of the vicinity of the contact point 1 in FIG. 13. FIG.

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

(Overall Configuration of Mechanical Parking Equipment)
The mechanical parking facility 1 exemplified in FIG. The mechanical parking equipment 1 has 4 stages in the vertical direction and 5 rows in the horizontal direction, and has 20 storage spaces 40 . One of the twenty storage spaces 40 is an empty space 41 . There are 19 pallets 30 on which automobiles V are mounted, and the mechanical parking facility 1 can store 19 automobiles V. As shown in FIG.

A mechanical parking facility 1 has pillars 2 provided vertically at front and rear positions. In the mechanical parking facility 1 illustrated in FIG. 1 , all the rows in the first stage are the entering/leaving parts 42 . A movable fence 43 that can be individually opened and closed between the pillars 2 is provided in each of the entering/leaving parts 42 .

In the first and fourth stages of the mechanical parking facility 1, a traversing device 90 (see FIG. 2) can individually traverse each pallet 30 as indicated by the arrow W. As shown in FIG. Also, in each row of the mechanical parking facility 1, the lifting device 80 can raise and lower all the pallets 30 in that row together (simultaneously) as indicated by the arrow H. Traversing device 90 and lifting device 80 are controlled by control device 44 .

The lifting devices 80 are provided at positions of the front and rear pillars 2 . The lifting device 80 is provided at each of the front, rear, left, and right corners of the pallet 30 . The lifting device 80 has a chain 81 as a cord-like body and a sprocket 82 for vertically stretching the chain 81 . The chains 81 provided at the front, rear, left and right positions run synchronously.

Pallet 30 is engaged with chain 81 by engagement device 100 . The engagement device 100 releasably engages the pallet 30 and the chain 81 . The engaging device 100 is composed of an engaging member 5 and an engaged member 6 .

As shown in FIG. 3, the engaging member 5 is attached to the chain 81. As shown in FIG. A plurality of engaging members 5 are fixed to the chain 81 at predetermined equal intervals. In the configuration example of FIG. 3, the engaging member 5 is hook-shaped with an opening 53 that opens upward.

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

The engaging member 5 moves relative to the engaged member 6 of the stationary pallet 30 from bottom to top. The engaging member 5 and the engaged member 6 are engaged with each other by the entering portion 63 of the engaged member 6 entering the opening 53 of the engaging member 5 . The pallet 30 is lifted and lowered by the lifting device 80 while being supported by the engagement device 100 at the front, rear, left, and right corners.

According to the mechanical parking equipment 1 of this configuration, the control device 44 controls the traversing device 90 and the lifting device 80 to arrange any pallet 30 in all the storage spaces 40 using the empty space 41. be able to. In other words, one or a plurality of pallets 30 are lifted or traversed 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 .

In FIG. 1, an example of the arrangement of the mechanical parking facility 1 in which the entrance/exit section 42 on the ground floor is the first stage, which is the lowest stage, has been described. It is also possible to make the third or fourth stage the entrance/exit section 42 on the ground floor.

(Configuration of engagement device)
<Cause of disengagement of the engaging device>
As shown in FIG. 3, the engaging member 5 of the engaging device 100 is fixed to the chain 81. As shown in FIG. The chain 81 can be displaced in the horizontal direction due to its 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 system 1 does not have a guide rail for maintaining the attitude of the engaging member 5 horizontally, as described in Patent Document 2, for example.

During the development of the mechanical parking system 1, the inventors of the present application noticed that the engagement between the engaging member 5 and the engaged member 6 may be disengaged while the pallet 30 is being raised and lowered. rice field. 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. As shown in FIG. FIG. 12 corresponds to the AA section of FIG. In addition, in FIG. 12, the hatching which shows a cross section is abbreviate|omitted to the engaging member 50 for easy understanding. This also applies to FIGS. 13, 4, 5, 8, 9, and 10, which will be described later.

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

The engaging member 50 has a first engaging surface 501 and a second engaging surface 502 facing each other in the horizontal direction. The first engaging surface 501 and the second engaging surface 502 form an opening 503 that opens upward. The position of the opening 503 is horizontally displaced with respect to the chain 81 . The first engaging surface 501 of the engaging member 50 extends in the vertical direction. The second engagement surface 502 is slanted with respect to the vertical direction. The opening 503 widens in the approach direction of the engaged member 60 (that is, in the vertical direction).

The engaged member 60 has a third engaging surface 601 that engages with the first engaging surface 501 of the engaging member 50 and a fourth engaging surface 602 that engages with the second engaging surface 502. ing. The third engagement surface 601 is along the vertical direction. The fourth engagement surface 602 is slanted 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 engaging surface 601 and the fourth engaging surface 602 form a cross section of the entering portion 603 of the engaged member 60 that tapers downward.

As described above, the engaged member 60 enters the opening 503 by raising the engaging member 50 from the bottom toward the engaged member 60 of the stopped pallet 30 . At least 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 and the engaged member 60 are in contact with each other. The engaging member 50 and the engaged member 60 are engaged with each other by at least part of the engaging member 60 coming into contact with the fourth engaging surface 602 (see the solid line in FIG. 12).

Here, out of the four chains 81 supporting one pallet 30, when an external force from the pallet 30 acts on one of the chains 81 or the engaging member 5, a 12 about the upper pin 507 (that is, downward). The axis of the upper pin 507 constitutes a horizontal axis that intersects the chain 81 and 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 is about to rotate, it maintains a horizontal posture. When the engaging member 50 tries to rotate, the engaged member 60 attached to the pallet 30 remains stationary without rotating.

According to studies 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, as shown enlarged in FIG. , move away from the third engaging surface 601 of the engaged member 60 and move the second engaging surface 502 of the engaging member 50 away from the fourth engaging surface 602 of the engaged member 60. found 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, In the joining device 10, the engagement between the engaging member 50 and the engaged member 60 is disengaged. In other words, the conventional engagement device 10 is operated by the friction between the first engagement surface 501 and the third engagement surface 601 and the 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. For this reason, the inventors of the present application newly found that the conventional engaging device 10 is disengaged when an external force (for example, a force such as vibration) that breaks the friction is applied. rice field.

The inventors of the present application have further studied the shapes of the engaging member 50 and the engaged member 60 that disengage. 13 shows the first engaging surface 501 and second engaging surface 502 of the engaging member 50, the third engaging surface 601 and It is a figure explaining the relationship with the 4th engagement surface 602. FIG.

First, in the cross section of the conventional engaging device 10 in which the engaging member 50 and the engaged member 60 are engaged, the second engaging surface 502 located relatively far from the chain 81 and the An engagement portion of the fourth engagement surface 602 will be described. In the conventional engaging device 10 shown in FIGS. The contact point 2 is the location where the distance between the second engaging surface 502 and the fourth engaging surface 602 is the smallest during the rotation of 50 . Contact point 2 is the lowest point of engagement between the second engagement surface 502 and the fourth engagement surface 602 in FIG. A circle C2 in FIG. 13 is a circle whose center is the rotation center O of the engaging member 50 and whose radius is from the rotation center O to the contact point 2. As shown in FIG.

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

Also, the contact point 2 moves along the circumference of the circle C2 when the engaging member 50 rotates. Contact point 2 also moves away from fourth engagement surface 602 as engagement member 50 rotates.

Here, broken line Ln21 is a straight line drawn along fourth engaging surface 602 of engaged member 60 . A dashed line Ln22 is a straight line passing through the center of rotation O and perpendicular to the dashed line Ln21. When the circle C2 is equally divided into four arcs Ar21, Ar22, Ar23, and Ar24 with reference to the dashed line Ln22, the contact point 2 of the engaging member 50 shown in FIGS. positioned. As shown enlarged in FIG. 14, the contact point 2 on the first arc Ar21 moves away from the dashed line Ln21 as it moves counterclockwise along the circumference of the circle C1 (see the dashed arrow (For easy understanding, the dashed arrow exaggerates the direction in which the contact point 2 moves away from the dashed line Ln21.). That is, the contact point 2 on the first arc Ar21 moves away from the fourth engaging surface 602 of the engaged member 60 .

On the other hand, a point on the second arc Ar22 indicated by a white circle in FIG. 14 moves toward the broken line Ln21 when it moves counterclockwise along the circumference of the circle C1 (white arrow Note that the white arrows are also exaggerated in the direction in which the white circle point is close to the dashed line Ln21 for easy understanding).

Unlike the conventional engaging device 10 shown in FIGS. 12 to 14, at least one point (that is, a second specified point) becomes a point on the second arc Ar22, the second specific point moves toward the fourth engaging surface of the engaged member. The engaging device having this configuration can maintain the engaged state between the second engaging surface and the fourth engaging surface even if the engaging member tries to rotate.

In the conventional engaging device 10 of FIGS. 12 to 14, the contact point 2 of the engaging portion of the second engaging surface 502 and the fourth engaging surface 602 passes through the rotation center O of the engaging member 50 and 2 and a line along the fourth engaging surface 602 of the engaged member 60, in other words, a boundary line Ln21 between the second engaging surface 502 and the fourth engaging surface 602 form an angle θ2 of 90 It is a point that becomes an obtuse angle exceeding °.

In order for at least one point (that is, the second specific point) at the engagement location between the second engagement surface and the fourth engagement surface to be a point on the second arc Ar22, the rotation center O of the engagement member must pass through the second arc Ar22. A second specific point where an angle θ2 formed by a line Ln23 passing through the specific point and a boundary line Ln21 between the second engaging surface and the fourth engaging surface is an acute angle of less than 90° 4 It is necessary to exist at the engagement point with the engagement surface. That is, in the cross section of the engaging device in which the engaging member and the engaged member are engaged, the second engaging surface of the engaging member and the engaged member are positioned relatively far from the chain 81 . The engaging portion of the fourth engaging surface of the engaging member is a straight line (Ln23) that intersects the rotation center axis of the engaging member and passes through the second specific point, and the second engaging surface and the fourth engaging surface. If there is a second specific point where the angle θ2 formed with the boundary line (Ln21) becomes an acute angle, the second engaging surface and the fourth engaging 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 is also the above-described second engaging surface 501 . It is the same as the engagement point between the engagement surface 502 and the fourth engagement surface 602 . Of the engagement points between the first engagement surface 501 of the engagement member 50 and the third engagement surface 601 of the to-be-engaged member 60, when the engagement member 50 rotates, the first engagement surface 501 and the third The contact point 1 is the point where the amount of separation from the 3-engagement surface 601 is the smallest. The contact point 1 is the uppermost point of engagement between the first engagement surface 501 and the third engagement surface 601 in FIG. A circle C1 in FIG. 13 is a circle whose center is the rotation center O of the engaging member 50 and whose radius is from the rotation center O to the contact point 1. As shown in FIG.

A portion of the first engagement surface 501 below the contact point 1 is positioned outside the circle C1. When the engaging member 50 rotates in the counterclockwise direction in FIG. I know you are going away.

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

A dashed line Ln11 is a straight line drawn along the third engaging surface 601 of the engaged member 60 . A dashed line Ln12 is a straight line passing through the center of rotation O and perpendicular to the dashed line Ln11. When the circle C1 is equally divided into four arcs Ar11, Ar12, Ar13, and Ar14 with reference to the dashed line Ln12, the contact point 1 of the engaging member 50 shown in FIGS. positioned. As shown in an enlarged view in FIG. 15, when the contact point 1 on the second arc Ar12 moves counterclockwise along the circumference of the circle C1 , it moves away from the dashed line Ln11 (see the dashed arrow ). That is, the contact point 1 on the second arc Ar12 moves away from the third engaging surface 601 of the engaged member 60 .

On the other hand, a point on the first arc Ar11 indicated by a white circle in FIG. 15 moves toward the dashed line Ln11 as it moves counterclockwise along the circumference of the circle C1 (white arrow reference).

Unlike the conventional engaging device 10 of FIGS. 12, 13 and 15, at least one point (that is, , first specific point) are points on the first arc Ar11, when the engaging member rotates counterclockwise, the The first specific point moves toward the third engaging surface of the engaged member. The engaging device having this configuration can maintain the engaged state between the first engaging surface and the third engaging surface even if the engaging member tries to rotate.

In the conventional engaging device 10 of FIGS. 12, 13, and 15, the contact point 1 of the engaging portion of the first engaging surface 501 and the third engaging surface 601 is aligned with the rotation center O of the engaging member 50. A line Ln13 passing through and passing through the contact point 1 and a line along the third engaging surface 601 of the engaged member 60, in other words, a boundary line Ln11 between the first engaging surface 501 and the third engaging surface 601. The point is that 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 location between the first engagement surface and the third engagement surface to be a point on the first arc Ar11, the rotation center O of the engagement member must be passed through and the first A first specific point at which an angle θ1 formed by a line Ln13 passing through the specific point and a boundary line Ln11 between the first engaging surface and the third engaging surface is an acute angle of less than 90° is located between the first engaging surface and the third engaging surface. 3 It is necessary to exist at the engagement point with the engagement surface. That is, the first engaging surface of the engaging member and the to-be-engaged member located relatively close to the chain 81 in the cross section of the engaging device in which the engaging member and the to-be-engaged member are engaged. The engaging portion of the third engaging surface of the engaging member is a straight line (Ln13) that intersects the rotation center axis of the engaging member and passes through the first specific point, and the first engaging surface and the third engaging surface. If the angle θ1 formed with the boundary line (Ln11) has a first specific point that is an acute angle, the first engaging surface and the third engaging surface maintain the engaged state.

<Configuration Example 1 of Engagement Device>
FIG. 4 shows a configuration example of an 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 engaging member 5 is fixed to the chain 81 by inserting pins 57 into two upper and lower mounting holes 56 provided in the flange portion 55 . The engaging member 5 may try to rotate counterclockwise (that is, downward) in FIG. 4 around the pin 57 on the upper side.

The engaging member 5 has a first engaging surface 51 and a second engaging surface 52 facing each other in the horizontal direction. The first engaging surface 51 and the second engaging surface 52 are planes in the configuration example of FIG. The first engaging surface 51 and the second engaging surface 52 form an opening 53 that opens upward. The position of the opening 53 is horizontally displaced with respect to the chain 81 . The first engaging surface 51 of the engaging member 5 extends in the vertical direction. The second engagement surface 52 is inclined with respect to the vertical direction. The opening 53 widens in the approach direction of the engaged member 6 (that is, in the vertical direction). The first engaging surface 51 and the second engaging surface 52 are connected via the bottom surface 59 . The shape of the bottom surface 59 is not limited to a specific shape.

An inclined 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 slopes outward as it goes upward. It should be noted that 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 vertically. 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 engaging surface 61 and the fourth engaging surface 62 form a cross section of the entering portion 63 of the engaged member 6 that tapers downward.

An inclined guide surface 64 is formed on the engaged member 6 below the third engaging surface 61 . The guide surface 64 is continuous with the third engagement surface 61 and slopes inward toward the bottom. The guide surface 54 of the engaging member 5 and the guide surface 64 of the engaged member 6 guide the entry portion 63 of the engaged member 6 when the engaging member 5 and the engaged member 6 are engaged. , can be guided into the opening 53 of the engagement member 5 . It should be noted that the guide surface 64 can be omitted.

The contact point 1, which is the uppermost point of the engaging portion between the first engaging surface 51 and the third engaging surface 61 of the engaging device 100, corresponds to the first specific point. A line Ln13 passing through the center of rotation O of the engaging member 5 and passing through the contact point 1, and a line Ln11 along the engagement point between the first engaging surface 51 and the third engaging surface 61 (that is, the boundary line). is an acute angle of less than 90°. In order to illustrate the boundary line between the first engaging surface 51 and the third engaging surface 61, the boundary line between the first engaging surface 51 and the third engaging surface 61 is extended in FIG. A broken line indicates the portion where the line is drawn, and the symbol "Ln11" is indicated there. Hereinafter, Ln21 is illustrated similarly.

Further, the contact point 2, which is the lowest point in the engagement location between the second engagement surface 52 and the fourth engagement surface 62, corresponds to the second specific point. A line Ln23 passing through the center of rotation O of the engaging member 5 and passing through the contact point 2, and a line Ln21 along the engagement location between the second engaging surface 52 and the fourth engaging surface 62 (that is, boundary line) is an acute angle of less than 90°.

In the engaging device 100 having this configuration, even if the engaging member 5 tries to rotate in the counterclockwise direction, the contact point 1 moves toward the third engaging surface 61 as indicated by the arrow in the enlarged view of FIG. , the contact point 2 also moves toward the fourth engagement surface 62 . The engagement device 100 engages the engagement member 5 without depending 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 engaged member 6 can be maintained. Therefore, this engaging device 100 can suppress disengagement between the engaging member 5 and the engaged member 6 while the pallet 30 is being moved up and down. An engaging device 100 for mechanical parking equipment is realized in which the engagement between the engaging member 5 and the engaged member 6 is not disengaged.

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

The engagement device of Configuration Example 1 only needs to satisfy both Condition 1 and Condition 2, and is not limited to the shape of the engagement device 100 shown in FIG. The engagement device of Configuration Example 1 can also employ the following configuration.

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

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

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

<Configuration Example 2 of Engagement Device>
As described above, in the engaging device 100 that satisfies both conditions 1 and 2, the engaging member 5 and the engaged member 6 maintain the engaged state. However, as a result of further studies by the inventors of the present application, it has been found that the engaging member 5 and the engaged member 6 can be separated from each other even if only one of the condition 1 or the condition 2 is satisfied as long as the predetermined conditions are satisfied. was found to remain engaged. This will be described below with reference to the drawings.

FIG. 5 shows an engagement device 101 according to Configuration Example 2. As shown in FIG. A dashed line in FIG. 5 indicates a state in which the engaging member 5 is engaged with the engaged member 6 . The solid line in FIG. 5 shows the state after the engaging member 5 rotates downward from the state in which it is engaged with the engaged member 6 .

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

More specifically, the engaging device 101 of FIG. 61, a line Ln13 passing through the rotation center O of the engaging member 5 and the contact point 1 and a boundary line Ln11 between the first engaging surface 51 and the third engaging surface 61 form. The angle θ1 is an acute angle of less than 90°. On the other hand, at the engagement location between the second engaging surface 52 of the engaging member 5 and the fourth engaging surface 62 of the engaged member 6 located relatively far from the chain 81, the engaging member 5 and the contact point 2, and the boundary line Ln21 between the second engaging surface 52 and the fourth engaging surface 62 form an obtuse angle of 90° or more. .

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

Assuming that the engaging member 5 rotates by an angle φ relative to the engaged member 6, the amount by which the first engaging surface 51 approaches the third engaging surface 61 in the horizontal direction ( The distance by which the second engaging surface 52 moves away from the fourth engaging surface 62 in the horizontal direction (distance away from the fourth engaging surface 62) is calculated and compared. When the amount that contact point 1 approaches is greater than the amount that contact point 2 separates, the first engaging surface 51 and the third engaging surface 61 maintain the engaged state, thereby causing the engaging member 5 to is restricted, and as a result, the second engaging surface 52 and the fourth engaging surface 62 are also maintained in the engaged state. detachment is suppressed.

Conditions for maintaining the engaged state between the engaging member 5 and the engaged member 6 will be described with reference to FIGS. Note that 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 engaging device 101, the angle φ may be set to about 0.001°, for example, and the following calculations may be performed. In this way, the engaging member 5 can be designed to be substantially non-rotating.

FIG. 5 shows an XY coordinate system that is a prerequisite for the following calculations. That is, the center of rotation O of the engaging member 5 is defined as the origin, the leftward direction in FIG. 5 is positive for the X coordinate, and the upward direction is positive for the Y coordinate.

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 approaching the third engagement surface 61 when the engagement member 5 rotates. It is a point. Further, the contact point 2 (x2, y2) at the engagement point 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. A short point.

As shown in an enlarged view of the vicinity of the contact point 1 in FIG. Let α1 be the angle with respect to the direction. As described above, the angle θ1 is defined by a line Ln13 passing through the center of rotation O of the engaging member 5 and passing through the contact point 1 and a boundary line Ln11 between the first engaging surface 51 and the third engaging surface 61. θ1<90°.

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

Also, assuming that the engaging member 5 has rotated by φ, the coordinates (x1′, y1′) of the contact point 1 after rotation are given by L1, θ1, α1 and φ as follows:
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 engaging surface 51 moves relative to the stationary third engaging surface 61 in the horizontal direction is
A1={x1+|y1′−y1|tan(α1)}−x1′
becomes. When A1<0, the first engaging surface 51 moves toward the third engaging surface 61 . If A1>0, the first engaging surface 51 moves away from the third engaging surface 61; In addition, in FIG. 6, since the angle φ is large, the first engaging surface 51 is depicted as interfering with the third engaging surface 61 .

Also, as shown in FIG. , and the inclination with respect to the vertical direction is α2. As described above, the angle θ2 is defined by a line Ln23 passing through the rotation center O of the engaging member 5 and the contact point 2 and a boundary line Ln21 between the second engaging surface 52 and the fourth engaging surface 62. Here, θ2>90°.

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

Also, 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 as follows:
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 engaging surface 52 moves relative to the stationary fourth engaging surface 62 in the horizontal direction is
A2=x2-{x2'+|y2'-y2|tan(α2+φ)}
becomes. The second engaging surface 52 moves away from the fourth engaging surface 62 when A2<0. If A2>0, the second engaging surface 52 moves toward the fourth engaging surface 62 .

Therefore, the amount that the contact point 1 approaches is larger than the amount that the contact point 2 separates is because
A1 < A2
It is time to satisfy The engaging device 101 of configuration example 2 shown in FIG. 5 satisfies this relational expression A1<A2.

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

5 to 7, the angle θ1 of the contact point 1 is obtuse and In an engaging device in which the contact point 2 has an acute angle θ2 at the engagement location between the second engaging surface 52 and the fourth engaging surface 62, the first engaging surface 52 and the fourth engaging surface 62 are arranged so as to satisfy the relational expression A1<A2. By configuring the mating surface 51, the second engaging surface 52, the third engaging surface 61, and the fourth engaging surface 62, the engaging member 5 and the engaged member 6 are prevented from being disengaged. be able to.

In addition, in the engaging device 100 of Configuration Example 1 shown in FIG. The angle θ2 of the contact point 2 at the engagement location between the surface 52 and the fourth engagement surface 62 is an acute angle. This engaging device 100 always satisfies the relational expression A1<A2 (because A1 becomes negative and A2 becomes positive).

Conversely, the angle θ1 of the contact point 1 at the engagement location 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 is An engaging device in which the angle θ2 of the contact point 2 at the location is obtuse does not satisfy the above relational expression A1<A2 (because A1 becomes positive and A2 becomes negative).

Note that the engaging device that satisfies the above-described relational expression A1<A2 is included in the category of configuration example 2. FIG. The engagement device of 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 and fourth engagement surfaces are not limited to flat surfaces.

(Structure for Appropriate Engagement between Engaging Member and Engaged Member)
In the engaging devices 100 and 101 of Configuration Examples 1 and 2 described above, when the engaging member 5 and the engaged member 6 are engaged, the engaging member 5 fixed to the chain 81 is about to rotate. Also, the engaging member 5 and the engaged member 6 maintain the engaged state. However, in the engaging devices 100 and 101 of Configuration Examples 1 and 2 as well, the engagement between the engaging member 5 and the engaged member 6 may be disengaged during lifting and lowering of the pallet 30. The inventors of the present application have noticed. The inventors of the present application investigated the cause and found that the engagement between the engaging member 5 and the engaged member 6 is disengaged due to the following causes.

In other words, 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, It does not have a guide rail as described in US Pat. Since the center of gravity of the engaging member 5 is displaced horizontally with respect to the chain 81 , a downward moment acts on the engaging member 5 . Since the tension applied to the chain 81 opposes the moment, the engaging member 5 attempts to maintain its horizontal posture. The posture of 5 cannot be horizontal. Therefore, the engaging member 5 is always slightly tilted before being engaged with the engaged member 6, and due to the relationship between the weight of the engaging member 5 and the tension, for example, about 1 to 5 degrees downward (that is, in FIG. 4, etc.) counterclockwise direction).

The engaging member 5 engages with the engaged member 6 of the stopped pallet 30 by relatively moving from bottom to top. If the engaging member 5 is tilted downward before engagement, there is a risk that the engaging member 5 and the engaged member 6 will not engage properly due to the difference in angle between the engaging member 5 and the engaged member 6. There is

In the engaging devices 100 and 101 of Configuration Examples 1 and 2, the engagement location between the first engagement surface 51 and the third engagement surface 61 is configured such that the angle θ1 of the first specific point is an acute angle. are doing. However, if the engaging member 5 and the engaged member 6 are engaged with each other with a misaligned angle, the angle θ1 at the first specific point may become an obtuse angle. Further, 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 is an acute angle, the engaging member 5 and the engaged member 6, the angle .theta.2 of the second specific point may become an obtuse angle. Then, even in the engaging devices 100 and 101 of Configuration Examples 1 and 2, the engagement between the engaging member 5 and the engaged member 6 is disengaged when the engaging member 5 is rotated by an external force or the like. It will end up.

An engaging device 102 shown in FIG. 8 is an example of an engaging device configured to properly engage the engaging member 5 and the engaged member 6 .

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

A dashed 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 that the orientation of the third engaging surface 61 and the fourth engaging surface 62 of the engaged member 6 of the pallet 30 maintained horizontally as shown in FIG. and the directions of the first engaging surface 51 and the second engaging surface 52 of the engaging member 5 match.

The engaging member 5 indicated by solid lines in FIG. is different from Specifically, the first engaging surface 51 and the second engaging surface 52 are inclined at a predetermined angle θ3 clockwise in FIG. The angle θ3 may be set to about 5°.

That is, when the engaging member 5 is not engaged with the engaged member 6 , the first engaging surface 51 and the second engaging surface 52 are aligned with the third engaging surface 61 and the fourth engaging surface 62 . On the other hand, the engaging member 5 is inclined by a predetermined angle θ3 in the direction in which it rotates upward.

Note that FIG. 8 shows a state in which the chain 81 is stretched straight, and the engaging member 5 is not rotated downward.

With this configuration, when the engaging member 5 rotates downward due to its own weight when it is not engaged with the engaged member 6 , the angle of the opening 53 is equal to the angle of the entering portion 63 of the engaged member 6 . will 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 rotates upward, the entrance portion 63 of the member to be engaged 6 moves toward the opening 53 of the engaging member 5 . , part of the entering portion 63 comes into contact with the first engaging surface 51, the second engaging surface 52, and the guide surface 54, and the engaging member 5 rotates downward accordingly. , the engaging member 5 and the engaged member 6 are engaged. As a result, the first engaging surface 51 and the third engaging surface 61 are properly engaged, and the second engaging surface 52 and the fourth engaging surface 62 are properly 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 properly engaged with each other.

Similar to the engaging device 100 shown in FIG. 4, the engaging device 102 shown in FIG. , 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 boundary line between the first engaging surface 51 and the third engaging surface 61 is less than 90° and the center of rotation 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 where an angle θ2 formed by a line Ln23 passing through O and 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 from disengaging from the engaged member 6 during the lifting and lowering of the pallet 30 . . Combining the configuration for appropriately engaging the engaging member 5 and the engaged member 6 with the configuration for suppressing disengagement between the engaging member 5 and the engaged member 6, the pallet 30 Disengagement between the engaging member 5 and the engaged member 6 can be more effectively suppressed during lifting.

Although illustration is omitted, a configuration for appropriately engaging the engaging member 5 and the engaged member 6 may be combined with a configuration for satisfying the relational expression A1<A2 described above. In addition, the configuration for appropriately engaging the engaging member 5 and the engaged member 6 must be combined with a configuration for suppressing disengagement between the engaging member 5 and the engaged member 6. 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 mounting holes 56 provided in the flange portion 55 of the engaging member 5 are shifted in the horizontal direction. As a result, the opening 53 of the engaging member 5 rotates clockwise by a predetermined angle θ3 relative to the engaged member 6 of the pallet 30, similarly to the engaging member 5 of FIG.

That is, when the engaging member 5 is not engaged with the engaged member 6 , the first engaging surface 51 and the second engaging surface 52 are aligned with the third engaging surface 61 and the fourth engaging surface 62 . On the other hand, the engaging member 5 is inclined by a predetermined angle θ3 in the direction in which it rotates upward.

In the engaging device 103 having this engaging member 5 as well, the engaging member 5 and the engaged member 6 are properly engaged in the same manner as in the engaging device 102 of FIG.

9, the engagement device 103 shown in FIG. 9 engages the first engagement surface 51 of the engagement member 5 and the third engagement surface 61 of the engaged member 6, similarly to the engagement device 100 shown in FIG. At the joint, 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 boundary line between the first engaging surface 51 and the third engaging surface 61 is 90. It has a first specific point that forms an acute angle of less than °, and at the engagement location between the second engaging surface 52 of the engaging member 5 and the fourth engaging surface 62 of the engaged member 6, the engaging member 5 A second specific angle θ2 formed by a line Ln23 passing through the rotation center O and 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 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 from disengaging from the engaged member 6 during the lifting and lowering of the pallet 30 . .

Although illustration is omitted, it is also possible to combine the configuration for appropriately engaging the engaging member 5 and the engaged member 6 shown in FIG. good. Also, the configuration for properly engaging the engaging member 5 and the engaged member 6 shown in FIG. , need not be combined.

8 or 9, the engaging member 5 and the engaged member 6 can be properly engaged without being combined with a configuration for suppressing disengagement between the engaging member 5 and the engaged member 6. There is an advantage that it becomes possible to engage the As a result of the appropriate engagement between the engaging member 5 and the engaged member 6, disengagement between the engaging member 5 and the engaged member 6 is suppressed. In addition, since the engaging member 5 attached to the chain 81 can be appropriately engaged with the engaged member 6, the mechanical parking equipment 1 can be used as a guide rail as described in Patent Document 2. can be omitted.

(Modified example of engagement device)
FIG. 10 shows a modification of the engagement device 104. As shown in FIG. In the engaging member 5 of FIG. 10, the first engaging surface 51 near the chain 81 is inclined with respect to the vertical direction, and the second engaging surface 52 away from the chain 81 is inclined along the vertical direction. there is The opening 53 widens in the approach direction of the engaged member 6 (that is, in the vertical direction). A guide surface 54 is formed above 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 engaging surface 61 is inclined with respect to the vertical direction. The fourth engagement surface 62 is along the vertical direction.

10 also rotates the center of rotation O of the engaging member 5 at the position where the first engaging surface 51 of the engaging member 5 and the third engaging surface 61 of the engaged member 6 engage. and the line Ln13 passing through the first specific point and the boundary line between the first engaging surface 51 and the third engaging surface 61 form an acute angle θ1 of less than 90°. In addition, at the engagement location between the second engaging surface 52 of the engaging member 5 and the fourth engaging surface 62 of the engaged member 6, the rotation center O of the engaging member 5 is passed through and the second specific point is reached. There is a second specific point where the angle θ2 formed by the line Ln23 passing through and the boundary line between the second engaging surface 52 and the fourth engaging surface 62 is an acute angle of less than 90°.

The engaging device 104 of FIG. 10 may be constructed so as to satisfy the above-described relational expression A1<A2.

The engagement member 5 of FIG. 10 also rotates the opening 53 upward (see dashed line), similar to the engagement 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 yet another modification of the engagement device 105. As shown in FIG. In the engaging device 105 of FIG. 11, the engaged member 6 attached to the pallet 30 has a hook shape with an opening 68 opening downward. In an engaging device 105 of FIG. 11, the shape of the engaging member 5 and the shape of the engaged member 6 are exchanged with respect to the engaging device 100 of FIG. The engagement member 5 attached to the chain 81 has a shape having an entry portion 58 that enters the opening 68 . The engaging device 105 having this configuration is configured such that the first engaging surface 51 of the engaging member 5 positioned relatively far from the chain 81 and the third engaging surface 61 of the engaged member 6 engage with each other. , the 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 the boundary line between the first engaging surface 51 and the third engaging surface 61 is less than 90°. The engagement between the second engaging surface 52 of the engaging member 5 and the fourth engaging surface 62 of the engaged member 6 located relatively close to the chain 81 while the first specific point forming an acute angle exists. 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 boundary line 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 °,
Incidentally, the engaging device 105 of FIG. 11 may be configured to satisfy the aforementioned relational expression A1<A2, like the engaging device 101 of FIG. 5, for example.

Also, the engagement member 5 of FIG. 11 may also rotate the entry 58 upward, similar to the engagement 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. 11, the mounting holes 56 may be horizontally displaced as shown in FIG.

(Other embodiments)
The engagement device disclosed herein can also be applied to mechanical parking equipment other than the configurations shown in FIGS. 1 and 2 . For example, a guide rail may be provided for maintaining the posture of the engaging member 5 fixed to the chain 81 horizontally. By doing so, the rotation of the engaging member 5 is suppressed. As described above, the engaging member 5 is restrained from disengaging from the engaged member 6. Therefore, when each engaging device disclosed herein and the guide rail are combined, the engaging member 5 can reduce the force applied to the guide rail from

Also, the features of each engagement device described above can be combined with each other to the extent possible.

1 Mechanical parking equipment 100 to 105 Engaging device 30 Pallet 5 Engaging member 51 First engaging surface 52 Second engaging surface 53 Opening 58 Entering portion 6 Engaged member 61 Third engaging surface 62 Fourth engaging Mating surface 63 Entrance part 68 Opening part 80 Lifting device 81 Chain (cord-like body)
V automobile

Claims (5)

a pallet on which a car is mounted;
an elevating device having a cord-like body stretched in the vertical direction, and for moving the cord-like body to raise and lower the pallet;
an engaging device for detachably engaging the pallet and the cord-like body,
The engagement device is
an engaging member that is attached to the cord-like body, moves vertically as the cord-like body travels, and has two engaging surfaces, a first engaging surface and a second engaging surface;
Attached to the pallet and having two engagement surfaces: a third engagement surface that engages with the first engagement surface and a fourth engagement surface that engages with the second engagement surface a joint member;
one of the engaging member and the engaged member has a hook-shaped cross section in which an opening is formed at a position horizontally displaced from the cord-like body by two opposing engaging surfaces;
The other of the engaging member and the to-be-engaged member is formed by two engaging surfaces that are back-to-back, and is adapted to engage with the opening when the engaging member and the to-be-engaged member engage in the vertical direction. It is a shape having an entry portion that enters relatively,
At least one of the two engaging surfaces forming the opening is inclined so that the opening widens in the direction of entry of the entry portion,
the engagement member is rotatable downward about a predetermined horizontal axis that intersects the cord;
In a cross section of the engaging device in which the engaging member and the engaged member are engaged, the engagement points of the first engaging surface and the third engaging surface intersect the horizontal axis. Further, the first specific point forms an acute angle between a straight line passing through the first specific point and a boundary line between the first engaging surface and the third engaging surface below the first specific point. have
In a cross section of the engaging device in which the engaging member and the engaged member are engaged, the engagement points of the second engaging surface and the fourth engaging surface intersect the horizontal axis. and the second specific point where the angle formed by the straight line passing through the second specific point and the boundary line between the second engaging surface and the fourth engaging surface above the second specific point becomes an acute angle We have mechanical parking facilities. a pallet on which a car is mounted;
an elevating device having a cord-like body stretched in the vertical direction, and for moving the cord-like body to raise and lower the pallet;
an engaging device for detachably engaging the pallet and the cord-like body,
The engagement device is
an engaging member that is attached to the cord-like body, moves vertically as the cord-like body travels, and has two engaging surfaces, a first engaging surface and a second engaging surface;
Attached to the pallet and having two engagement surfaces: a third engagement surface that engages with the first engagement surface and a fourth engagement surface that engages with the second engagement surface a joint member;
The engaging member has a hook-shaped cross section in which two opposing engaging surfaces form an opening at a position offset in the horizontal direction with respect to the cord-like body,
The member to be engaged is formed by two engaging surfaces that are back-to-back, and is an entering portion that relatively enters the opening when the engaging member and the member to be engaged are engaged in the vertical direction. is a shape having
At least one of the two engaging surfaces forming the opening is inclined so that the opening widens in the direction of entry of the entry portion,
the engagement member is rotatable downward about a predetermined horizontal axis that intersects the cord;
The first engaging surface and the third engaging surface located relatively close to the cord-like body in a cross section of the engaging device in which the engaging member and the engaged member are engaged. 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 equipment.
・A1 is the first engagement when it is assumed that the engagement member rotates downward about the horizontal axis by φ from the state in which the engagement member and the engaged member are engaged. The amount by which the mating surface moves horizontally relative to the stationary third mating surface.
A1={x1+|y1′−y1|tan(α1)}−x1′
However, (x1, y1) is the first engaging surface and the (x1', y1') are the coordinates of the point 1 included in the engagement location of the third engagement surface, (x1', y1') are the coordinates of the point 1 after the rotation of the engagement member, and α1 is the third It is the angle of the engagement points of the first engagement surface and the third engagement surface with respect to the vertical direction. Further, when A1<0, the first engaging surface moves toward the third engaging surface , and the point 1 approaches the third engaging surface when the engaging member rotates. It is the point with the longest distance, and when A1>0, the first engaging surface moves away from the third engaging surface, and the point 1 moves away from the third engaging surface when the engaging member rotates. 3 It is the shortest distance away from the engagement surface .
A2 is the second engagement when it is assumed that the engagement member rotates downward about the horizontal axis by φ from the state in which the engagement member and the engaged member are engaged. The amount by which the mating surface moves horizontally relative to the stationary fourth mating surface.
A2=x2-{x2'+|y2'-y2|tan(α2+φ)}
However, (x2, y2) are the coordinates of point 2 included in the engagement location of the second engagement surface and the fourth engagement surface before the engagement member rotates in the XY coordinate system. where (x2′, y2′) are the coordinates of the point 2 after the engagement member has rotated, α2 is the engagement point of the second engagement surface and the fourth engagement surface, It is the angle with respect to the vertical direction. Further, when A2<0, the second engaging surface moves away from the fourth engaging surface, and the point 2 moves away from the fourth engaging surface when the engaging member rotates. It is the point with the shortest distance, and when A2>0, the second engaging surface moves toward the fourth engaging surface, and the point 2 moves toward the fourth engaging surface when the engaging member rotates. 4 This is the point where the distance approaching the engagement surface is the longest . a pallet on which a vehicle is mounted;
an elevating device having a cord-like body stretched in the vertical direction, and for moving the cord-like body to raise and lower the pallet;
an engaging device for detachably engaging the pallet and the cord-like body,
The engagement device is
an engaging member that is attached to the cord-like body, moves vertically as the cord-like body travels, and has two engaging surfaces, a first engaging surface and a second engaging surface;
Attached to the pallet and having two engagement surfaces: a third engagement surface that engages with the first engagement surface and a fourth engagement surface that engages with the second engagement surface a joint member;
The engaged member has a hook-shaped cross section in which an opening is formed at a position horizontally displaced with respect to the cord-like body by two engaging surfaces facing each other,
The engaging member has an entering portion which is formed by two engaging surfaces facing back to each other and which relatively enters into the opening when the engaging member and the engaged member are vertically engaged. is a shape having
At least one of the two engaging surfaces forming the opening is inclined so that the opening widens in the direction of entry of the entry portion,
the engagement member is rotatable downward about a predetermined horizontal axis that intersects the cord;
The first engaging surface and the third engaging surface located relatively far from the cord-like body in a cross section of the engaging device where the engaging member and the engaged member are engaged. 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 equipment.
・A1 is the first engagement when it is assumed that the engagement member rotates downward about the horizontal axis by φ from the state in which the engagement member and the engaged member are engaged. The amount by which the mating surface moves horizontally relative to the stationary third mating surface.
A1={x1+|y1′−y1|tan(α1)}−x1′
However, (x1, y1) is the first engaging surface and the (x1', y1') are the coordinates of the point 1 included in the engagement location of the third engagement surface, (x1', y1') are the coordinates of the point 1 after the rotation of the engagement member, and α1 is the third It is the angle of the engagement points of the first engagement surface and the third engagement surface with respect to the vertical direction. Further, when A1<0, the first engaging surface moves toward the third engaging surface , and the point 1 approaches the third engaging surface when the engaging member rotates. It is the point with the longest distance, and when A1>0, the first engaging surface moves away from the third engaging surface, and the point 1 moves away from the third engaging surface when the engaging member rotates. 3 It is the shortest distance away from the engagement surface .
A2 is the second engagement when it is assumed that the engagement member rotates downward about the horizontal axis by φ from the state in which the engagement member and the engaged member are engaged. The amount by which the mating surface moves horizontally relative to the stationary fourth mating surface.
A2=x2-{x2'+|y2'-y2|tan(α2+φ)}
However, (x2, y2) are the coordinates of point 2 included in the engagement location of the second engagement surface and the fourth engagement surface before the engagement member rotates in the XY coordinate system. where (x2′, y2′) are the coordinates of the point 2 after the engagement member has rotated, α2 is the engagement point of the second engagement surface and the fourth engagement surface, It is the angle with respect to the vertical direction. Further, when A2<0, the second engaging surface moves away from the fourth engaging surface, and the point 2 moves away from the fourth engaging surface when the engaging member rotates. It is the point with the shortest distance, and when A2>0, the second engaging surface moves toward the fourth engaging surface, and the point 2 moves toward the fourth engaging surface when the engaging member rotates. 4 This is the point where the distance approaching the engagement surface is the longest . In the mechanical parking equipment according to any one of claims 1 to 3,
The engaging member is in a state in which it is not engaged with the member to be engaged and before it rotates downward due to its own weight, or a state in which it is not engaged with the member to be engaged. and the first engaging surface and the second engaging surface are aligned with the third engaging surface and the fourth engaging surface in a state prior to downward rotation due to engagement with the engaged member , wherein 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 on which a car is mounted;
an elevating device having a cord-like body stretched in the vertical direction, and for moving the cord-like body to raise and lower the pallet;
an engaging device for detachably engaging the pallet and the cord-like body,
The engagement device is
an engaging member that is attached to the cord-like body, moves vertically as the cord-like body travels, and has two engaging surfaces, a first engaging surface and a second engaging surface;
Attached to the pallet and having two engagement surfaces: a third engagement surface that engages with the first engagement surface and a fourth engagement surface that engages with the second engagement surface a joint member;
one of the engaging member and the engaged member has a hook-shaped cross section in which an opening is formed at a position horizontally displaced from the cord-like body by two opposing engaging surfaces;
The other of the engaging member and the to-be-engaged member is formed by two engaging surfaces that are back-to-back, and is adapted to engage with the opening when the engaging member and the to-be-engaged member engage in the vertical direction. It is a shape having an entry portion that enters relatively,
At least one of the two engaging surfaces forming the opening is inclined so that the opening widens in the direction of entry of the entry portion,
the engagement member is rotatable downward about a predetermined horizontal axis that intersects the cord;
The engaging member is in a state in which it is not engaged with the member to be engaged and before it rotates downward due to its own weight, or a state in which it is not engaged with the member to be engaged. and the first engaging surface and the second engaging surface are aligned with the third engaging surface and the fourth engaging surface in a state prior to downward rotation due to engagement with the engaged member , wherein 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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