JP2021017730A - Gate door device - Google Patents

Abstract

To provide a gate door device that can securely fix a gate door.SOLUTION: A gate door device 1 comprises a stopper portion 30 provided on a gate door 10 and provided to be perpendicular to the extending direction of a rail 20, and a catch portion 40 provided on the ground that contacts the stopper portion 30 when the gate door is in the closed or open position and maintains contact with the stopper portion 30 by magnetic force.SELECTED DRAWING: Figure 1

Description

The present invention relates to a gate device capable of stopping a gate in an open or closed position.

A sliding door type gate may be installed at the entrance and exit of the building site. A door roller is provided at the bottom of the gate, and by rolling the door roller on a rail provided on the ground, even a heavy gate can be easily opened and closed manually.

However, if a door roller is provided at the bottom of the gate as described above, the gate may move unintentionally due to a slight inclination of the installation location or wind. In this regard, in the gate device disclosed in Patent Document 1 below, the fixing device is directed to the lower part of the gate, and the contact portion of the fixing device comes into contact with the passage surface to fix the gate at a desired position. There is.

JP-A-2018-17009

However, in the above-mentioned conventional technique, if pebbles or the like intervene between the contact portion and the passage surface, the necessary frictional force cannot be generated between the contact portion and the passage surface, and the gate may still not be fixed. is there.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a gate device capable of securely fixing a gate.

In order to solve the above problems, the gate device according to one aspect of the present invention is provided on the ground and a gate having a door roller at the lower part, and the door roller is arranged on the gate to open and close the gate. A rail that guides the gate, a stopper that is provided on the gate and is provided perpendicular to the extending direction of the rail, and a stopper that is provided on the ground and the gate is in the closed or open position. A catch portion that makes contact and maintains contact with the stopper portion by magnetic force is included.

Further, in the gate device according to one aspect of the present invention, one of the stopper portion and the catch portion includes a magnet, and the other includes a metal plate adsorbed on the magnet.

Further, in the gate device according to one aspect of the present invention, one of the magnet and the metal plate is supported so as to be movable in the extending direction of the rail by a base portion arranged on the opposite side to the other. At the same time, a first spring is provided between the one and the base portion.

Further, in the gate device according to one aspect of the present invention, the end portion of the first spring is not fixed to one of the magnet and the metal plate, or the base portion.

Further, in the gate device according to one aspect of the present invention, one end of a guide shaft extending in the extending direction of the rail is fixed to one of the magnet and the metal plate, and the guide shaft is the base. The other end is arranged on the opposite side of one of the magnet and the metal plate so as to penetrate the base portion, and a second spring is provided between the other end of the guide shaft and the base portion. Be done.

Further, in the gate device according to one aspect of the present invention, the constant of the second spring is smaller than the constant of the first spring.

Further, in the gate device according to one aspect of the present invention, the tip of the gate approaches the gate pillar when moving from the open position to the closed position, and the gate pillar is located inside or outside the site from the tip. It is located and has a shielding portion that overlaps with the tip portion when viewed from the passage.

According to the present invention, the gate can be securely fixed.

It is a figure which shows the installation state of the gate device which concerns on 1st Embodiment. It is a figure which shows the installation state of the gate device which concerns on 1st Embodiment. It is a figure which shows the stopper part and the catch part which concerns on 1st Embodiment. It is a figure which shows the stopper part and the catch part which concerns on 1st Embodiment. It is a figure which shows the operation of the stopper part and the catch part. It is a figure which shows the operation of the stopper part and the catch part. It is a figure which shows the operation of the stopper part and the catch part. It is a figure which shows the installation state of the gate device which concerns on 2nd Embodiment. It is a figure which shows the stopper part and the catch part which concerns on 2nd Embodiment. It is a figure which shows the stopper part and the catch part which concerns on 3rd Embodiment. It is a figure which shows the stopper part and the catch part which concerns on 3rd Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the present disclosure is merely an example, and those skilled in the art can easily conceive of appropriate changes while maintaining the gist of the invention are naturally included in the scope of the present invention. Further, in order to clarify the explanation, the drawings may schematically represent the width, thickness, shape, etc. of each part as compared with the actual embodiment, but this is just an example, and the interpretation of the present invention is used. It is not limited. Further, in the present specification and each figure, the same elements as those described above with respect to the above-mentioned figures may be designated by the same reference numerals, and detailed description thereof may be omitted as appropriate.

1 and 2 are views showing an installation state of the gate device 1 according to the first embodiment. FIG. 1 shows a state in which the gate device 1 is viewed from a passage in the site, and FIG. 2 shows a state in which the gate device 1 is viewed from above. The gate device 1 is a rail opening / closing type gate device provided at the entrance / exit to the site of a facility (factory, school, hospital, park, research institute, etc.), and includes a gate 10 and a rail 20. The gate 10 is provided with a plurality of door rollers 11 at the bottom, and the rail 20 is provided on the ground such as concrete, cement, or mortar. By arranging the door roller 11 of the gate 10 on the rail 20, the rail 20 guides the opening / closing movement of the gate 10. The gate 10 has an extension direction of the rail 20 (opening / closing direction of the gate 10, left and right in FIGS. 1 and 2) between the closed position A shown by the solid line and the broken line in FIG. 1 and the open position B shown by the alternate long and short dash line. It is possible to move along the direction).

A gate pillar 50 and a gate wall 60 located away from the gate pillar 50 are installed around the gate device 1. In the present disclosure, the end of the gate 10 near the gate pillar 50 (the left end of the gate 10) is referred to as the tip 12a, and the opposite end (the right end of the gate 10) is referred to as the rear end 12b. Further, the ground continuous inside and outside the site including the entrance / exit of the site where the gate device 1 is arranged is referred to as a passage. The points indicated by C and D in FIG. 2 correspond to the passage inside the site and the passage outside the site, respectively. When the gate 10 moves from the open position B to the closed position A, its tip portion 12a approaches the gate pillar 50. Further, when viewed from the passage C in the site, the gate 10 is arranged in front of the gate wall 60 at the open position B.

The gate 10 is a heavy object made of a metal material such as steel, stainless steel, or aluminum. As shown in FIG. 2, the gate 10 is provided with a rectangular frame portion 13 composed of a plurality of rod-shaped frames at the lower portion, and a plurality of door rollers 11 are rotatably attached under the frame portion 13. .. Two rails 20 are arranged on the ground on the front side and the back side of the passage so as to be arranged in parallel with each other. The frame on the front side of the frame portion 13 extends along the rail 20 on the front side, and the frame on the back side of the frame portion 13 extends along the rail 20 on the back side.

Further, the gate device 1 includes a stopper portion 30 provided below the gate 10 and provided perpendicular to the extending direction of the rail 20, and a catch portion 40 provided on the ground. In the example shown in FIG. 1, the stopper portion 30 is arranged at the lower end of the rear end side frame (rear end portion 12b) in the frame portion 13 of the gate 10. In the examples shown in FIGS. 1 and 2, when the gate 10 is in the closed position A, the catch portion 40 comes into contact with the stopper portion 30. At this time, the catch portion 40 maintains contact with the stopper portion 30 by magnetic force. As a result, it is possible to prevent the gate 10 from being opened due to a slight inclination of the rail 20 or the wind from the closed state.

3 and 4 are views showing a stopper portion 30 and a catch portion 40. FIG. 3 is an enlarged view of the stopper portion 30 and the catch portion 40 of FIG. 1, and FIG. 4 is a partial cross-sectional view taken along the line IV-IV of FIG. Logically, one of the stopper portion and the catch portion may include a magnet and the other may include a metal plate that is attracted to the magnet. However, in the present embodiment, the catch portion 40 includes the magnet 41 and the stopper portion 30 includes the magnet 41. The metal plate 31 attracted to the magnet 41 is included. Not limited to this, the stopper portion 30 may include a magnet, and the catch portion 40 may include a metal plate.

The metal plate 31 is fixed to the lower part of the gate 10 by bolts or the like (not shown) at a position protruding downward from the lower end of the rear end portion 12b in the example shown in FIG. Further, as shown in FIG. 3, the catch portion 40 includes an abutment 42, a guide shaft 43, a nut 44, a first spring 45a, and a second spring 45b. The abutment 42 is fixed to the ground by an anchor (not shown) or the like. In the present embodiment, the abutment 42 corresponds to the "base portion" described in the claims, and a hole H1 through which the rod-shaped guide shaft 43 is inserted is formed therein.

The guide shaft 43 is stretched along the stretching direction of the rail 20, a magnet 41 is fixed to the rear end (one end), and a nut 44 is attached to the tip (the other end). Further, the guide shaft 43 penetrates the hole H1 of the abutment 42, and its tip (the side to which the nut 44 is attached) is arranged on the side opposite to the magnet 41 with respect to the abutment 42. The magnet 41 fixed to the guide shaft 43 is supported by an abutment 42 arranged on the opposite side of the metal plate 31.

As shown in FIG. 4, the magnet 41 has a disk shape, and the guide shaft 43 is fixed at the center position of the circle of the magnet 41. The metal plate 31 has a flat surface wider than the magnet 41, and is attracted to the magnet 41 on that surface. The inner diameter of the hole H1 formed in the abutment 42 is larger than the outer diameter of the guide shaft 43. Therefore, the guide shaft 43, the magnet 41 fixed to the guide shaft 43, and the nut 44 can move relative to the abutment 42 along the extending direction of the rail 20.

Further, as shown in FIG. 3, a first spring 45a is provided between the magnet 41 (rear end of the guide shaft 43) and the abutment 42, and the abutment 42 and the nut 44 (of the guide shaft 43) are provided. A second spring 45b is provided between the tips). The first and second springs 45a and 45b are coil springs, both of which are wound around the guide shaft 43. Further, the constant of the second spring 45b (spring constant) is smaller than the constant of the first spring 45a. The roles of the first and second springs 45a and 45b will be described below.

FIG. 5 is a diagram showing the first and second springs 45a and 45b when the gate 10 moves from the open position B to the closed position A. As shown in FIG. 5, when the gate 10 moves from the open position B to the closed position A, the first spring 45a is pushed and compressed by the surface (tip side surface) of the magnet 41 and the abutment 42. .. At this time, since the force for returning from the compressed state to the natural length state acts on the first spring 45a, the impact on the magnet 41 (see the impact force F1 in FIG. 5) is alleviated. As a result, when the gate 10 moves to the closed position A and the metal plate 31 hits the magnet 41, the metal plate 31 can be reliably attracted to the magnet 41.

Further, one end of the second spring 45b is fixed to the abutment 42, and the other end is fixed to the nut 44. Therefore, when the gate 10 moves from the open position B to the closed position A, the second spring 45b extends so that both ends are pulled by the abutment 42 and the nut 44. As a result, similarly to the first spring 45a, the impact when the metal plate 31 hits the magnet 41 can be alleviated. That is, both the second spring 45b and the first spring 45a having a larger constant contribute to the relaxation of the impact force F1, so that the metal plate 31 can be more reliably attracted to the magnet 41. ..

After the metal plate 31 is attracted to the magnet 41, the first and second springs 45a and 45b return to their natural lengths, and the catch portion 40 returns to the initial state shown in FIG. As a result, the gate 10 is fixed at the closed position A.

6A and 6B are views showing the first and second springs 45a and 45b when a person moves the gate 10 from the closed position A to the open position B. As shown in FIG. 6A, when a person moves the gate 10 from the closed position A, the second spring 45b is pushed and compressed by the abutment 42 and the nut 44, and the force F3A pulling the magnet 41 from the metal plate 31. Occurs. In FIG. 6, F2A shows a force acting on the gate 10 when the gate 10 is manually moved from a stationary state (at the start of opening the gate).

After that, as shown in FIG. 6B, when a person further moves the gate 10, an inertial force is applied to the gate 10, and the force F2B acting on the gate 10 becomes larger than the force F2A at the start of opening the gate. At this time, the compressibility of the second spring 45b is larger than that at the start of gate opening, and the force F3B that pulls the magnet 41 from the metal plate 31 is also larger than the force F3A at the start of gate opening. That is, the force that pulls the magnet 41 from the metal plate 31 increases at the timing when the inertia is applied to the movement of the gate 10. This makes it easier to pull the magnet 41 away from the metal plate 31 as compared to the case where the magnet 41 is fixed.

Here, one end of the first spring 45a is not fixed to the magnet 41, or the other end is not fixed to the abutment 42. Therefore, when the gate 10 is separated from the closed position A, the first spring 45a maintains its natural length unlike the second spring 45b. This is because the force F3A that pulls the magnet 41 attracted to the metal plate 31 at the start of opening the gate is suppressed from becoming excessively large, so that the gate 10 is pulled in the direction opposite to the direction in which the person moves the gate 10. This is to prevent the gate 10 from being difficult to open by human power. That is, by pulling the magnet 41 only by the second spring 45b whose constant is smaller than the constant of the first spring 45a, it is possible to prevent the gate 10 from being difficult to open manually.

After that, when the magnet 41 separates from the metal plate 31, the second spring 45b returns to its natural length. As a result, the catch portion 40 returns to the initial state shown in FIG.

As described above, when the gate 10 moves from the open position B to the closed position A and the metal plate 31 hits the magnet 41, the first spring 45a is compressed and the second spring 45b is stretched. At this time, the tip portion 12a of the gate 10 comes closest to the gate pillar 50. After that, the first and second springs 45a and 45b return to their natural lengths, so that the tip portion 12a is slightly separated from the gate pillar 50. Therefore, as shown in FIGS. 1 and 2, when the gate 10 is located at the closed position A, there is a gap G between the tip portion 12a of the gate 10 and the gate pillar 50. The length of the gap G is the value obtained by subtracting the maximum compression length from the natural length of the first spring 45a (in other words, the value obtained by subtracting the natural length from the maximum extension length of the second spring 45b). It is designed to have a value slightly exceeding.

In order to hide the gap G between the gate 10 and the gate pillar 50, the gate pillar 50 has a shielding portion 51 located inside or outside the site from the tip portion 12a of the gate 10. The shielding portion 51 overlaps with the tip portion 12a when viewed from the passage (passage C in the site or passage D outside the site). The shielding portion 51 may be formed integrally with the gate pillar 50, or may be formed so that a wall or pillar of a member different from the gate pillar 50 is in contact with the gate pillar 50.

The case where the catch portion 40 comes into contact with the stopper portion 30 by magnetic force when the gate 10 is in the closed position A has been described above. However, even when the gate 10 is in the open position B, the gate 10 is opened by the magnetic force. It is possible to maintain. In the following, as another embodiment of the present invention (second embodiment), a case where a magnetic force acts to maintain both the closing and opening of the gate 10 will be described.

FIG. 7 is a diagram showing an installation state of the gate device 2 according to the second embodiment. In the second embodiment, the gate device 2 includes two catch portions 40a, 40b. The catch portion 40a contacts the stopper portion 30 when the gate 10 is in the open position A, and the catch portion 40b contacts the stopper portion 30 when the gate 10 is in the open position B. Both catch portions 40a and 40b maintain contact with the stopper portion 30 by magnetic force. The catch portion 40a is the same as the catch portion 40 described in the first embodiment, and the other components other than the catch portion 40b are also the same as those described in the first embodiment, and thus the description thereof will be omitted. ..

FIG. 8 is a diagram showing a stopper portion 30 and a catch portion 40b according to the second embodiment. The catch portion 40b has a symmetrical structure with the catch portion 40a (see the catch portion 40 shown in FIG. 3), and its components are the same as those of the catch portion 40a. The magnet 41 of the catch portion 40a is attracted to the surface on the front end side of the metal plate 31, whereas the magnet 41 of the catch portion 40b is attracted to the surface on the rear end side of the metal plate 31. Also in the second embodiment, a first spring 45a is provided between the magnet 41 and the abutment 42, and a second spring 45b is provided between the abutment 42 and the nut 44. As a result, even when the gate 10 moves from the closed position A to the open position B, the metal plate 31 can be reliably attracted to the magnet 41 by alleviating the impact of the catch portion 40b on the magnet 41. Further, when a person moves the gate 10 from the open position B to the closed position A, the person moves the gate 10 to the closed position A at a timing when the force for pulling the magnet 41 adsorbed on the metal plate 31 increases. It is possible to shift the start timing (at the start of closing the gate) and make it easy to move the gate 10 manually.

Further, in the first embodiment, the case where the catch portion 40 fixed to the ground includes the first and second springs 45a and 45b has been described, but the stopper portion 30 fixed to the gate 10 is the first and first. It may include 2 springs. An example thereof will be described as another embodiment of the present invention (third embodiment).

9 and 10 are views showing a stopper portion 70 and a catch portion 80 of the gate device 3 according to the third embodiment. FIG. 10 is a partial cross-sectional view taken along line XX of FIG. The components other than the stopper portion 70 and the catch portion 80 are the same as those described in the first embodiment, and thus the description thereof will be omitted.

As shown in FIG. 9, in the third embodiment, the stopper portion 70 includes the first and second springs 75a and 75b, and the catch portion 80 does not include the spring. The catch portion 80 has a magnet 81 attracted to the second metal plate 72, an abutment 82, a rod-shaped fixed shaft 83 extending along the extending direction of the rail 20, and a nut 84. The abutment 82 is fixed to the ground by an anchor or the like, the fixed shaft 83 penetrates the hole H3 formed in the abutment 82 and is fixed by the nut 84, and the magnet 81 is fixed to the rear end of the fixed shaft 83. That is, unlike the first embodiment, the magnet 81 is fixed so as not to move along the extending direction of the rail 20.

The stopper portion 70 includes a first metal plate 71 fixed to the lower portion (rear end portion 12b) of the gate, a second metal plate, a guide shaft 73, and nuts 74a and 74b, and the first spring 75a It is arranged between the first metal plate 71 and the second metal plate, and the second spring 75b is arranged between the rear end (nut 74b) of the guide shaft 73 and the first metal plate 71. In the third embodiment, the first metal plate 71 corresponds to the "base portion" described in the claims, and the hole H2 through which the rod-shaped guide shaft 73 is inserted is formed therein.

The guide shaft 73 is extended along the extending direction of the rail 20, and a second metal plate 72 is fixed to the tip (one end) of the guide shaft 73 by a nut 74a, and a nut 74b is attached to the rear end (the other end). There is. The guide shaft 73 penetrates the hole H2 of the first metal plate 71, and its rear end (the side to which the nut 74b is attached) is arranged on the side opposite to the second metal plate 72 with respect to the first metal plate 71. Will be done. As a result, the second metal plate 72 fixed to the guide shaft 73 is supported by the first metal plate 71 arranged on the opposite side of the catch portion 80 from the magnet 81. Here, the first spring 75a is arranged between the second metal plate 72 (the tip of the guide shaft 73) and the first metal plate 71, and the second spring 75a is with the first metal plate 71. It is arranged between the nuts 74b (rear end of the guide shaft 73). Similar to the first embodiment, the constant of the second spring 75b (spring constant) is smaller than the constant of the first spring 75a.

As shown in FIG. 10, holes H2 of the first metal plate 71 are provided one on each side of the magnet 41, and two guide shafts 73 are inserted therethrough. A second metal plate 72 having a flat surface wider than the magnet 81 is fixed to the tips of these two guide shafts 73. The two nuts fixing the second metal plate 72 are arranged at positions where they do not come into contact with the magnet 81. Similar to the first embodiment, the inner diameter of each hole H2 formed in the first metal plate 71 is larger than the outer diameter of each guide shaft 73. Therefore, the guide shaft 73, the second metal plate 72 fixed to the guide shaft 73, and the nuts 74a and 74b can move relative to the first metal plate 71 along the extending direction of the rail 20. ..

When the gate 10 moves from the open position B to the closed position A, the first spring 75a is pushed and compressed by the second metal plate 72 and the first metal plate 71, as in the first embodiment. As a result, the impact on the magnet 81 is alleviated. As a result, when the gate 10 moves to the closed position A and the second metal plate 72 hits the magnet 81, the second metal plate 72 can be reliably attracted to the magnet 81. Further, the second spring 75b has one end fixed to the first metal plate 71 and the other end fixed to the nut 74b, and when the gate 10 moves to the closed position A, the first metal plate 71 and the nut 74b Stretched by. As a result, the impact on the magnet 81 is further alleviated, and the attraction of the magnet 81 can be made more reliable.

Further, when a person moves the gate 10 from the closed position A to the open position B, the second spring 75b is pushed by the first metal plate 71 and the nut 74b to compress the second metal plate 72. The magnet 81 attracted to the door is pulled. Since the force for pulling the second metal plate 72 increases according to the magnitude of the compressibility of the second spring 75b, the timing at which the force for pulling the second metal plate 72 from the magnet 81 increases is determined by human power. It can be shifted from the start of opening the gate 10. As a result, it is possible to easily move the gate 10 manually.

Further, as in the first embodiment, the first spring 75a has one end on the second metal plate 72 so as not to pull the second metal plate 72 when a person moves the gate 10. It is preferable that it is not fixed or that the other end is not fixed to the first metal plate 71. By doing so, it is possible to prevent the gate 10 from being difficult to open manually.

As described above, in the gate devices 1, 2 and 3 according to each embodiment, the catch portions 40 and 80 provided on the ground maintain contact with the stopper portions 30 and 70 provided on the gate 10 by magnetic force. Therefore, the gate 10 can be securely fixed.

In each embodiment, an example in which the stopper portion or the catch portion has the first and second springs has been described, but the gate device according to the present invention is not limited to this. For example, the spring arranged in the stopper portion or the catch portion may be only the first spring or only the second spring. Further, a third spring different from the first and second springs may be included. Further, in each embodiment, an example in which one end or the other end of the first spring is not fixed has been described, but the first spring has both ends fixed and extends when a person moves the gate 10 to form a magnet. Alternatively, it may pull a metal plate that is attracted to the magnet.

1,2,3 Gate device, 10 gate, 11 door wheel, 12a tip, 12b rear end, 13 frame, 20 rail, 30,70 stopper, 31 metal plate, 40, 40a, 40b, 80 catch, 41,81 magnet, 42,82 abutment, 43,73 guide shaft, 83 fixed shaft, 44,74a, 74b, 84 nut, 45a, 75a first spring, 45b, 75b second spring, 50 gate pillar, 51 Shield, 60 gate wall, 71 first metal plate, 72 second metal plate.

Claims (7)

A gate with a door roller at the bottom and
A rail that guides the opening and closing movement of the gate by being provided on the ground and by arranging the door roller on it,
A stopper portion provided on the gate and provided perpendicular to the extending direction of the rail,
A catch portion provided on the ground that contacts the stopper portion when the gate is in the closed position or the open position and maintains contact with the stopper portion by magnetic force.
Gate device including. In the gate device according to claim 1,
Of the stopper portion and the catch portion, one contains a magnet and the other contains a metal plate that attracts the magnet.
Gate device. In the gate device according to claim 2,
One of the magnet and the metal plate is supported by a base portion arranged on the opposite side to the other so as to be movable in the extending direction of the rail, and the one and the base portion are supported. A first spring is provided between them,
Gate device. In the gate device according to claim 3,
The end of the first spring is not fixed to one of the magnet and the metal plate, or to the base.
Gate device. In the gate device according to claim 4,
One end of the guide shaft extending in the extending direction of the rail is fixed to one of the magnet and the metal plate, the guide shaft penetrates the base portion, and the other end is the magnet. Arranged on the opposite side of one of the metal plates
A second spring is provided between the other end of the guide shaft and the base portion.
Gate device. In the gate device according to claim 5,
The constant of the second spring is smaller than the constant of the first spring.
Gate device. In the gate device according to any one of claims 1 to 6.
When the gate moves from the open position to the closed position, the tip of the gate approaches the gate pillar.
The gate pillar is located inside or outside the site from the tip portion, and has a shielding portion that overlaps with the tip portion when viewed from the passage.
Gate device.

Images