JPH11343751A - Lock mechanism for movable stand - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lock mechanism for a moving stand capable of automatically opening and closing a closing lid of a lock hole in response to rise and fall of a lock member in a short time thereby saving labor. SOLUTION: A lock mechanism is equipped with a lock pin 41 provided at a lower portion of a moving stand. When the moving stand is located at the predetermined position, the lock pin 41 descends and is inserted to a lock hole 22 formed in a ground floor 3. A lock hole closing lid 31 exerted upward by a compression coil spring 29 is provided in a lock hole 22 and, when the lock pin 41 is at a raised position (standby position), the top surface 31a of the lock hole closing lid 31 is set to a level as same as the level of the surface 3a of the ground floor 3. When the lock pin 41 descends, the lock hole closing lid 31 is lowered against the elastic force of the compression coil spring 29 by the lock pin 41, and the lower portion of the lock pin 41 is automatically inserted to the lock hole 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile stand in a stadium, and more particularly to a lock mechanism for the mobile stand.

[0002]

2. Description of the Related Art For example, in a multi-purpose stadium such as baseball or soccer or an indoor stadium, Japanese Patent Publication No. 2530072 discloses a "moving stand for a circular stadium".
As disclosed in Japanese Unexamined Patent Publication No. 20833, “equipment with moving seats” and Japanese Unexamined Patent Application Publication No. 59-091272, a device for moving a stand in a stadium, etc. Stands and movable spectator seats) can be moved.

[0003] A moving means for moving the moving stand relative to the ground floor, a guide means for setting a moving direction of the moving stand, and the moving stand are provided below the moving stand. , And a plurality of lock pins which are respectively lowered and inserted into a plurality of lock holes formed in the ground floor, respectively.

More specifically, as shown in FIG. 10, an anchor hole 101 as a lock hole is formed in a ground floor 100.
Are formed, and the anchor holes 101 are closed by lids 103 when not in use. When the moving stand (not shown) comes to a predetermined position, the lid 103 is manually removed, and the plurality of lock pins 102 at the standby position (elevated position) respectively descend (see arrow X).
Each is inserted into the anchor hole 101. Normally, about ten lock pins 102 are provided per moving stand. Based on the above-described configuration, the mobile stand (not shown) is locked at a predetermined position, so that even if an earthquake or the like occurs, the mobile stand (not shown) can be prevented from being inadvertently moved or vibrated.

Usually, a plurality of predetermined positions of the mobile stand are set according to an event or a competition.
An anchor hole is formed in a wide area of the graded floor 100 in accordance with a moving range of a moving stand (not shown). Then, when moving the moving stand to another predetermined position, first, the plurality of lock pins 102 are respectively raised and pulled out from the respective anchor holes 101, and then the lids 103 are put on the respective anchor holes 101. This eliminates unevenness of the ground floor 100 caused by the anchor holes 101. Then, the moving stand is moved to another predetermined position by the moving means, where, as described above,
Lock the mobile stand.

[0006]

The above-mentioned conventional lock structure of the moving stand has the following problems.
First, it takes a lot of labor and time to open and close the lid. In particular, the lock pins are scattered over a wide area under the moving stand, and the worker must move over a wide area to open and close the lid. In addition, if a worker forgets to close the lid, the anchor hole opened on the upper surface of the ground floor may cause a person to trip and hinder the game, and may be dangerous. Further, the raising and lowering of the lock pin is usually electrically operated and can be remotely controlled, while the opening and closing of the lid has to rely on a manual operation by an operator, which is far from rational.

The present invention has been made in view of the above-mentioned problems of the prior art, and automatically opens and closes a lid of a lock hole as the lock member moves up and down. It is an object of the present invention to provide a lock mechanism for a movable stand that can be made more compact and that does not forget to close the lid and that is rational.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a moving stand that can move along a moving path set on a ground floor such as a stadium at a predetermined position. A lock mechanism for locking a stand, wherein the movable stand is provided with a plurality of lock members which can be respectively raised and lowered and which can be inserted into a plurality of lock holes formed on the ground floor, respectively. A lock hole closing lid urged upward by an elastic member is provided in each hole, and when each lock member is at the ascending position, the upper surface of each lock hole closing lid is at the same level as the surface of the ground floor. When each lock member is lowered, each lock member closes each lock hole closing lid against the elastic force of each elastic member. It is intended to.

In the present invention, when the movable stand comes to a predetermined position, the plurality of lock members at the standby position (elevated position) are respectively lowered, and the lower ends of the lock holes close the lid to resilient the elastic members. The lock members are lowered against the force, and as a result, each lock member is inserted into the lock hole. When the moving stand is moved to another predetermined position, each lock member is raised and pulled out from each lock hole, and at the same time, each lock hole closing lid is raised by the elastic force of each elastic member. Thus, the upper surface of each lock hole closing cover is at the same level as the surface of the ground floor, and each lock hole closing cover closes each lock hole.

Here, as a preferred specific embodiment of the present invention, a spring receiving member is provided at the bottom of the lock hole, and the spring receiving member is provided as the elastic member. And the lock hole closing lid urged upward by the coil spring is pressed against a lid holding plate provided on the ground floor. Is mentioned.

[0011]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing an example of a stadium according to the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIGS.
It is the C-line sectional view and the DD sectional view. It should be noted that the embodiments described below are merely examples of the present invention, and the present invention may be applied to a mobile station in which the number of mobile stands is one or three or more without departing from the scope of the claims. It includes design changes and modifications, such as setting three or more predetermined positions of the stand.

In the drawing, reference symbol S denotes a stadium, reference numeral 1 denotes a fixed stand, and reference numerals 2a and 2b denote a first mobile stand and a second mobile stand, respectively (a third-base mobile stand and a first-base mobile stand, respectively). Reference numeral 3 denotes a ground floor, reference numeral 4 denotes a moving mechanism of the moving stand 2a (2b), and reference numeral 5 denotes a moving stand 2a.
The guide mechanism of (2b), reference numeral 6 denotes a movable stand 2a (2
The lock mechanism of b), and reference numeral 7 denotes a movable stand 2a (2b).
2 shows a supporting mechanism of the present invention.

The stadium S is, for example, an all-weather dome stadium, and includes a fixed stand 1 and two first and second movable stands 2a and 2b which are moved along a fence 1a of the fixed stand 1. And has a function of switching the ground floor 3 to a baseball ground B, a soccer ground F, or the like according to the purpose of the game. That is, the state of FIG. 1 shows a state in which each of the mobile stands 2a and 2b is at a predetermined position on the side of the soccer ground F when playing soccer in the stadium S, and each of the mobile stands 2a when playing baseball. , 2b are represented by the two-dot chain
It is moved to a predetermined position indicated by a and 2b. The moving positions (predetermined positions) of the moving stands 2a and 2b are not limited to these two types.

Here, the first and second movable stands 2
Since a and 2b have the same structure, the first moving stand 2
This will be described using a as an example. The first moving stand 2a
As shown in FIG. 2, a stair-shaped audience seat 22 is formed on an upper part of a support frame 21 made of steel or the like having excellent strength.
Is arranged. In addition, the moving stand 2a has an access passage 23c and a support frame 21 arranged on the outer periphery thereof.
A fence rubber mat 24, a dugout 25, a photographer's seat 26, an entrance 27 and the like are provided on the front of the vehicle. Reference numerals 23a and 23b indicate passages leading to the dugout 25 and the photographer's seat 26, respectively. The moving stand 2a is moved to a predetermined position and locked according to a game (for example, soccer or baseball) and an event.

Next, FIG. 4 is an enlarged plan view of the first moving stand, showing the arrangement of a moving mechanism, a guide mechanism, a lock mechanism and the like below the moving stand. That is,
Reference numeral 4 denotes a moving mechanism (eight are provided in this example), reference numeral 5 denotes a guide mechanism (eight is provided in this example), and reference numeral 6 denotes a lock mechanism (10 is provided in this example). ,
Reference numeral 7 denotes a support mechanism (also referred to as an outrigger;
Reference numeral 8 denotes a driven wheel mechanism (2 in this example).
Reference numeral 7a denotes a combination of a support mechanism and a driven wheel mechanism (two provided in this example), and reference numeral 9 denotes a combination of a lock mechanism and a driven wheel mechanism (two provided in this example). These will be sequentially described below.

As shown in FIGS. 2 and 5 (a), 5 (b) and 5 (c), the moving mechanism 4 (running drive device) is mounted on the support leg 21a of the support frame 21 by a pair of urethane rubber, for example. An axle 11 supporting the rubber wheels 10a, 10b (drive wheels) is rotatably mounted around its axis (see an arrow E in FIG. 5), and the rotational power of a drive motor 12 is reduced on the axle 11. The power is transmitted via the machine 13. A pair of rubber wheels 10 of each moving mechanism 4
By rotating a and 10b in synchronization with each other,
The movable stand 2a is turned on the ground floor 3 to the fixed stand 1a along an arc shape. In other words, the pair of rubber wheels 10a and 10b are formed of a material that elastically deforms, such as urethane rubber, and support a part of the weight of the moving stand 2 so that the pair of rubber wheels 10a and 10b By rolling, the mobile stand 2 performs horizontal turning. The moving mechanism 4 includes a support mechanism 7 (also referred to as an outrigger) including a screw jack 14 and a drive motor 14a thereof.

FIGS. 2 and 6 show the guide mechanism 5.
As shown in (a) and (b), a guide rail 15 is laid on the ground floor 3 in an arc shape in the moving range of the moving stand 2a. The guide rail 15 is accommodated in a groove 15a formed on the ground floor 3. On the other hand, both ends of the axle 17 having the iron wheels 16 are rotatably supported by the lower frame 21c of the support frame 21 via bearings 18a and 18b (see arrow F in FIG. 6). The iron wheel 16 rolls while being guided on the rail 15 so that the moving direction of the moving stand 2a can be defined in an arc shape along the fixed fence 1a. As a result, the moving stand 2a moves on the moving path along the guide rail 15.

As shown in FIG. 2 and FIGS. 7A and 7B, the lock mechanism 6 according to the present invention
A screw jack 20 driven by a drive motor 19 is provided on one support leg 21a. A lock pin 41 (lock member) is connected to a lower portion of the screw jack 20 via a connection pin 41a or the like. I have. When the screw jack 20 is driven by the drive motor 19 when the movable stand 2a is stopped at the predetermined position, the lock pin 41 can be moved up and down while being guided by the guide member 21b, and the lock pin 41 is moved to the lower position. 7 (the state of FIG. 7B), the lower end of the lock pin 41 is inserted into a lock hole 22 described later of the ground floor 3. As described above, the drive motor 19 and the screw jack 20 constitute an electric lifting device of the lock pin 41.

On the ground floor 3, a moving stand 2a
Lock holes 22 (anchor holes) in the movable range of
Is provided. A cylindrical guide member 30 is provided around the lock hole 22, and on the bottom surface of the lock hole 22,
A bottomed cylindrical spring receiving member 24a is attached by an anchor bolt 28 or the like. A compression coil spring 29 as an urging member is supported by the spring receiving member 24a. A lock hole closing lid 31 is provided at the upper end of the compression coil spring 29.
(Opening / closing lid) is supported so as to be able to move up and down along the cylindrical guide member 30. The cylindrical guide member 30 has a lid holding member 3
3 is attached by a screw 32 or the like. The upper surface of the lid pressing member 33 is set at the same level as the surface 3 a of the ground floor 3.

The lock hole closing lid 31 is a compression coil spring 29.
When the lock pin 41 is at the raised position (the state shown in FIG. 7A), the lock hole closing lid 31 is pressed against the lid pressing member 33 by the urging force. Thereby, the upper surface 3 of the lock hole closing lid 31
1a is set at the same level as the surface 3a of the ground floor 3. Then, as shown in FIG. 7B, when the lock pin 41 is lowered, the lower end of the lock hole closing lid 31 is lowered against the elastic force of the compression coil spring 29, and the lower end of the lock pin 41 is locked. The movable stand 2a can be locked in a predetermined position as a result of being inserted into the hole 22.

Regarding the support mechanism 7 (outrigger),
As shown in FIGS. 2 and 8, a screw jack 14 that is moved up and down by a drive motor 14 a is provided on a support leg 21 a of a support frame 21, and a lower support portion 34 of the screw jack 14 is attached to the ground floor 3. By grounding, the screw jack 14 can support most of the weight of the movable stand 2a.

As shown in FIGS. 9 (a) and 9 (b), the driven wheel mechanism 8 has an axle 11 supporting a pair of rubber wheels 10a and 10b mounted on a supporting leg 21a of a supporting frame 21 around its axis. The rubber wheels 10a and 10b are rotatably mounted (see arrow G in FIG. 9), and are made of, for example, urethane rubber, and support a part of the weight of the moving stand 2a. 4 is composed of a combination of the support mechanism 7 and the driven wheel mechanism 8, and that denoted by the numeral 9 is composed of a combination of the lock mechanism 6 and the driven wheel mechanism 8. The description is omitted.

Next, the operation when the moving stand 2a is moved and locked will be described. When the moving stand 2a is at a predetermined position (for example, a position for playing soccer as shown in FIG. 1), the screw jacks 14 of the support mechanisms 7 are respectively lowered as shown in FIG.
By grounding the lower support portion 34 to the ground floor 3, most of the weight of the movable stand 2a can be supported by each screw jack 14. And FIG.
As shown in (b), the plurality of lock pins 41 at the standby position (up position) are respectively lowered, and the lower ends of the lock pins 41 close the lock hole closing lids 31 against the elastic force of the compression coil springs 29. As a result, each lock pin 41 is inserted into each lock hole 22.

The moving stand 2a is moved to another predetermined position (FIG. 1).
When the baseball is moved to the position shown in the middle, two-dot chain line 2a when playing baseball), first, each lock pin 41 is raised and pulled out from each lock hole 22, and at the same time, each lock hole closing lid is closed. 31 rises by the elastic force of each compression coil spring 29, the upper surface 31a of each lock hole closing lid 31 becomes the same level as the surface 3a of the ground floor 3, and each lock hole closing lid 31 closes each lock hole 22. Close up. As described above, in the present embodiment, the lock hole closing lid 31 of the lock hole 22 is automatically opened and closed as the lock pin 41 moves up and down, thus saving labor and time and saving labor (manpower saving). Conversion)
Can be achieved. Also, the lock hole closing lid 31 is not forgotten to be closed, and the unevenness of the lock hole 22 does not hinder an event or a game. Further, since the remote operation of the lock pin 41 and the opening and closing of the lock hole closing lid 31 are linked, it is reasonable.

Next, the screw jacks 14 of the support mechanisms 7 are respectively raised, and the lower support portions 34 are separated from the ground floor 3, so that the weight of the movable stand 2a is reduced to the rubber wheels 10a and 10b, the iron wheels 16 and the like. Supported by Here, when the drive motor 12 of the moving mechanism 4 is started to rotate the rubber wheels 10a and 10b, the iron wheels 16 are guided by the guide rails 15 in the guide mechanism 5, and move in the laying direction of the guide rails 15. The stand 2a is pivoted and stopped at the predetermined position. The moving speed of the moving stand 2a is, for example, several meters /
min. Here, similarly to the above, the screw jacks 14 of the respective support mechanisms 7 are respectively lowered, and the lower support portions 34 are grounded to the ground floor 3, whereby the moving stand 2 a is moved by the screw jacks 14.
Can support most of its weight. Then, as shown in FIG. 7B, the plurality of lock pins 41 at the standby position (up position) are respectively lowered, and the lower ends of the lock pins 41 close the respective lock hole closing lids 31 to the elastic force of the respective compression coil springs 29. As a result, the lock pins 41 are respectively inserted into the lock holes 22, and the movable stand 2a is locked.

[0026]

Since the present invention is constructed as described above, when the movable stand comes to a predetermined position, the plurality of lock members at the standby position (elevated position) are respectively lowered, and the lower end thereof As a result, each lock hole closing lid is lowered against the elastic force of each elastic member, and as a result, each lock member is inserted into each lock hole. When moving the moving stand to another predetermined position, each lock member is raised and pulled out from each lock hole, and at the same time, each lock hole closing lid is raised by the elastic force of each elastic member, The upper surface of each lock hole closing cover is at the same level as the surface of the ground floor, and each lock hole closing cover closes each lock hole. In this way, the lid of the lock hole is automatically opened and closed with the raising and lowering of the lock member, and it does not take time and effort,
Labor saving (labor savings) can be achieved, and there is no forgetting to close the lid, which does not hinder events or competitions. Further, since the remote operation of the lock member and the opening and closing of the lid are linked, it is rational.

Here, a spring receiving member is provided on the bottom surface of the anchor hole as the lock hole, and a coil spring as the elastic member is provided at the center of the spring receiving member. The lock hole closing lid urged upward by the coil spring is pressed against a lid holding plate provided on the ground floor, thereby simplifying the operation. With such a configuration, automatic opening and closing of the lock hole closing lid can be reliably achieved.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of a stadium according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIGS. 1 and 4;

FIGS. 3 (a) and (b) are respectively C- in FIG.
It is the C-line sectional view and the DD sectional view.

FIG. 4 is an enlarged plan view of the first moving stand, showing an arrangement of a drive mechanism, a guide mechanism, a lock mechanism, and the like.

FIG. 5 is an enlarged view of the drive mechanism shown in FIGS. 1 and 4, wherein (a), (b) and (c) are front views,
It is a side view and a top view.

FIG. 6 is an enlarged view of the guide mechanism shown in FIGS. 1 and 4, wherein (a) and (b) are a front view and a side view, respectively.

FIG. 7 is an enlarged view of the lock mechanism shown in FIGS. 1 and 4, wherein (a), (b) and (c) are a front view, a side view and a plan view, respectively.

FIG. 8 is an enlarged view of the support mechanism shown in FIGS. 1 and 4.

9 is an enlarged view of the rubber wheel shown in FIG. 4,
(A) and (b) are a front view and a side view, respectively.

FIG. 10 is a view showing a conventional lock mechanism of a moving stand.

[Explanation of symbols]

 S Stadium B Baseball ground F Soccer ground 1 Fixed stand 2a, 2b Moving stand (movable spectator seat) 3 Ground floor 3a Ground floor surface 4 Moving mechanism 5 Guide mechanism 6 Lock mechanism 21 Support frame 21a Support leg 22 Lock hole 24a Spring Receiving member 29 Compression coil spring (elastic member) 31 Lock hole closing lid 33 Lid holding plate 41 Lock pin (Lock member)

Claims (2)

[Claims] 1. A lock mechanism for locking a movable stand, which is movable along a movement path set on a ground floor such as a stadium, at a predetermined position, said movable stand comprising: A plurality of lock members which can be respectively raised and lowered and which can be inserted into a plurality of lock holes formed in the ground floor, respectively, wherein each lock hole is closed by a lock hole urged upward by an elastic member. A lid is provided, and when each lock member is in the raised position, the upper surface of each lock hole closing lid is set at the same level as the surface of the ground floor, and when each lock member is lowered, each lock member A lock mechanism for a moving stand, wherein each lock hole closing lid is lowered against the elastic force of each elastic member. 2. A spring receiving member is provided at the bottom of the lock hole, and a coil spring as the elastic member is mounted on the spring receiving member with its center line directed vertically. The lock mechanism according to claim 1, wherein the lock hole closing lid urged upward by a spring is pressed against a lid pressing plate provided on the ground floor.