JP4182021B2 - Gate - Google Patents

Description

  The present invention relates to a gate door having a plurality of wheels at a lower portion thereof and capable of opening and closing a passage portion so as to prevent it from traveling independently by the action of wind or the like.

  2. Description of the Related Art Conventionally, in order to make an opening / closing operation smooth, there is known a gate that includes a plurality of wheels at a lower portion and rolls the wheels on a road surface or a rail laid on the road surface. Such a gate can be smoothly opened and closed by providing wheels, but the moving resistance of the gate is reduced, so that the moving speed may be increased. In particular, when moving a heavy gate, once the movement is started, an inertial force is applied, and the opening / closing operator needs a large force to stop the gate.

Patent Document 1 discloses a braking device for a gate using a rotary damper. The braking device of Patent Document 1 is provided with a rotating mechanism that always contacts the rail provided on the gate, and a rotary damper is provided on this rotating mechanism, and the moving force of the gate is controlled by applying the braking force of the rotary damper. To do.
A rotary damper is a device in which a resistor connected to the rotating shaft of a rotating roller is immersed in the viscous fluid in a housing in which the viscous fluid is accommodated. Therefore, the increase in the rotation speed of the rotating roller can be suppressed by the viscous resistance acting on the resistor, and the moving speed of the gate can be suppressed.
Similarly, Patent Documents 2 and 3 show a gate provided with a rotary damper, which suppresses a rapid increase in the moving speed of the gate.

  However, when the rotary damper used in the above-described conventional technique tries to move the gate, a viscous resistance is generated regardless of the moving speed of the gate. Therefore, when the moving speed of the gate is low, the opening / closing operation of the gate is heavy. It can be felt. In particular, when the gate is moved from a stopped state, the gate must be moved against a large viscous resistance. Furthermore, since the rotary damper utilizes the viscous resistance of the fluid, there is a problem that the viscosity of the fluid changes depending on the temperature of the use environment and a stable braking ability cannot be exhibited.

  In addition, there is an accident where the gate moving end collides with an obstacle present on the rail. This is because the gate opening and closing operator grasps a part away from the gate moving end and opens and closes the gate to open the moving end. This was caused by circumstances such as that an obstacle could not be confirmed, or that the operator could not stop the gate that was moving by inertial force.

JP-A-10-102958 JP 2000-234468 A JP-A-8-200407

  The purpose of the present invention is that the operating force during the opening / closing operation of the gate is not burdened by the operator, and it is prevented from traveling by itself due to the influence of wind or the like, and the opening / closing operator is arranged at the gate moving end. It is to provide a gate that cannot be moved without it.

As a result of intensive studies in view of such circumstances, the present inventor is a gate door that includes a plurality of wheels at the lower part of the door body and moves so that the passage portion can be opened and closed, and a brake pad that can contact the wheels, consists of a resilient member which biases the brake pad on the wheel abuts, a braking means acting at all times the braking force to at least one wheel is coupled to the handle for gates opening and closing located gates moving end, the handle The intended object is achieved by providing a movement control device comprising release means for releasing the braking force by swinging in the gate moving direction .

  The braking means that applies the braking force is provided with a brake pad that urges the brake means to always contact at least one wheel.

  The release means for releasing the brake force releases the brake force by swinging the handle in the moving direction of the gate.

  Further, a wire is connected to the brake pad, and the handle is rocked to pull the wire to separate the brake pad from the wheel.

  According to the gate of the present invention, at least one of the plurality of wheels provided in the lower part of the gate by the braking means of the movement control device is in a state in which a braking force is constantly acting. Since the release mechanism that releases the brake force is connected to the handle that opens and closes the gate, the brake force is released when opening and closing the gate. The same operability can be obtained. In addition, the gate cannot be moved unless it is opened and closed by grasping the handle located at the moving end of the gate, and the opening and closing operator can reliably recognize the presence or absence of obstacles on the moving rail of the gate. It is possible to prevent object collisions.

Hereinafter, the best mode for carrying out the present invention will be described based on examples.
1 to 8 show an embodiment of the gate of the present invention. In the figure, 1 represents a gate, and includes a door body 2 and a plurality of wheels 3 disposed below the door body 2. A rail R is laid in the passage portion T, and the wheel 3 rolls on the upper surface of the rail R. FIG. 1 shows a closed state of the gate 1, one side of the door body 2 abuts on a door support column 4 standing on one side of the passage portion T, and the door support column 4 and the gate 1 are locked by a lock device (not shown). It is possible. On the other hand, in order to open the gate 1, the handle 21 provided on one side of the door body 2 is grasped and the gate 1 is moved in a direction away from the door-to-door support column 4, and the passage portion T is opened. It becomes the state. Thus, the gate 1 moves so that the passage part T can be opened and closed.

  Further, the gate 1 is provided with a movement control device 5. The movement control device 5 includes a braking means 6 that applies a braking force to the wheel 3A located at the door end and a releasing means 7 that releases the braking force. The braking means 6 includes a brake pad 61 that can contact the wheel 3A, an elastic member 62 that urges the brake pad 61 to contact the wheel 3A, and a holding member 63 that holds the brake pad 61 and the elastic member 62. It is configured. The holding member 63 is formed with a brake pad holding portion 631, and the elastic member 62 is disposed between the brake pad holding portion 631 and the brake pad 61 so that the brake pad 61 accommodated in the brake pad holding portion 631 contacts the periphery of the wheel 3 </ b> A. The brake pad 61 is pressed around the wheel 3A.

  Therefore, the brake pad 61 is always in contact with the wheel 3A, and the braking force by the braking means 6 is applied so that the wheel 3A does not roll. In this embodiment, the wheel 3A is made of stainless steel, and the brake pad 61 is made of polyacetal resin. However, the wheel 3A is excellent in wear resistance and generates a large frictional force when contacted. Various materials can be used. In the figure, 31 is a bracket for attaching the wheel 3A to the lower part of the door body 2, and 32 is a metal fitting for preventing the fall of the gate 1 that engages with the rail R.

  On the other hand, the release means 7 has one end connected to the brake pad 61 and the other end connected to the handle 21. The release means 7 includes a connecting wire 71 that is stretched between the brake pad 61 and the vicinity of the handle 21, and a wire pulling device 72 that is connected to the other end of the connecting wire 71. Further, a turnbuckle 711 is provided at an intermediate position of the connecting wire 71, and the tension of the connecting wire 71 can be adjusted. The connecting wire 71 is inserted through the lower horizontal trunk edge 22 and the vertical rod 23 of the door body 2, and a pulley 24 is provided at the corner of the door body 2 to guide the connecting wire 71. The connecting wire 71 can also be disposed through the flexible wire tube.

  The wire pulling device 72 is engaged with a guide member 721 disposed in the vertical shaft 23 of the door body 2, a slide member 722 that can move laterally along the guide member 721, and the slide member 722. It is comprised from the raising member 723 which can move to an up-down direction. The other end of the connecting wire 71 is attached to the lower part of the pulling member 723. A cam surface 7221 whose center is recessed in a substantially V-shaped cross section is formed on the upper surface of the slide member 722, and the engaging portion 7231 of the pulling member 723 is engaged with the cam surface 7221. A through hole 7222 that penetrates in the vertical direction is formed at the center of the slide member 722, and a pulling member 723 is inserted through the through hole 7222.

  Therefore, when the slide member 722 is slid in the horizontal direction along the guide member 721, the engaging portion 7231 of the pulling member 723 moves up and down along the upper surface of the cam surface 7221. When the engaging portion 7231 moves upward, the pulling member 723 rises, the connecting wire 71 is also lifted upward, and the brake pad 61 connected to one end of the connecting wire 71 moves against the urging force of the elastic member 62. The brake pad 61 is separated from the wheel 3A, and the braking force of the wheel 3A is released. Since the brake pad 61 is biased toward the wheel 3A by the elastic member 62, a tension toward the wheel 3A acts on the connecting wire 71, and a downward force is always applied to the pulling member 723. The joining portion 7231 always maintains a neutral state located at the bottom of the cam surface 7211.

  It is the handle 21 that moves the slide member 722 along the guide member 721, and the handle 21 is provided on the front and rear surfaces at the moving end of the door body 2. A handle mounting bracket 25 is fixed to the door body 2 at a vertical position of the handle 21, and an arm rod 211 of the handle 21 is rotatably attached to the handle mounting bracket 25. The arm rod 211 located on the upper side of the handle 21 has its tip extended to the inside of the vertical rod 23 and is engaged with an engagement long hole 7223 formed on the side surface of the slide member 722. Therefore, when the handle 21 is swung along the moving direction of the gate, the armband 211 is swung horizontally around the point P. The slide member 722 engaged with the distal end of the upper arm 211 moves along the guide member 721, the engaging portion 7231 of the pulling member 723 is moved upward by the cam surface 7221, and the connecting wire 71 is moved upward. Pulled up.

  The brake pad 61 to which one end of the connecting wire 71 is connected is urged toward the wheel 3A by the elastic member 62. The brake pad 61 is separated from the wheel 3A against the urging force of the elastic member 62. And the braking force of the wheel 3A is released. When the operator's hand is released from the handle 21, the connecting wire 71 is biased downward in FIGS. 7 and 8 by the elastic member 62, so that the engaging portion 7231 of the pulling member 723 is the cam surface of the slide member 722. In order to maintain the neutral state located at the bottom of 7221, the slide member 722 is biased toward the neutral position, and the handle 21 also returns to the state before the swing.

  The operation of the gate of the present invention having the above configuration will be described. First, in a state where the gate is left unattended, the brake pad 61 is urged toward the wheel 3A by the elastic member 62, the brake pad 61 comes into contact with the peripheral edge of the wheel 3A, a braking force acts on the wheel 3A, wind, etc. Therefore, the gate 1 does not run by itself. At this time, the slide member 722 is in the neutral position, and the engaging portion 7231 of the pulling member 723 is located at the bottom of the cam surface 7221. Next, when the operator grasps the handle 21 and moves the gate 1, the handle 21 rotates horizontally along the moving direction of the gate around the point P, and the tip of the upper arm 211 on the upper side of the handle 21. The engaged slide member 722 moves along the guide member 721 in the horizontal direction. Then, the engaging portion 7231 engaged with the cam surface 7221 rises and the pulling member 723 moves upward. As the pulling member 723 moves, the connecting wire 71 is also pulled upward, and the brake pad 61 connected to one end of the connecting wire 71 moves against the urging force of the elastic member 62. When the brake pad 61 moves, the wheel 3A and the brake pad 61 are separated from each other, the braking force of the wheel 3A is released, the rolling of the wheel 3A becomes free, and the gate 1 can be moved. At this time, the movement direction of the gate 1 coincides with the direction in which the operator grabs the handle 21 and swings, so that the gate 1 can be moved and operated without difficulty.

  When the movement of the gate 1 is completed or the operator's hand is inadvertently released from the handle 21 of the gate 1, the brake pad 61 urged by the elastic member 62 immediately comes into contact with the wheel 3 </ b> A and contacts the wheel 3 </ b> A. A brake force is applied and the gate 1 can be stopped. When the gate 1 is moved again, the handle 21 is moved by swinging the handle 21 along the direction in which the gate 1 is desired to move and applying a force in the moving direction to the gate 1.

  When the gate 1 moves, the wheel 3A to which the braking force is applied by the braking means 6 is in a completely free state. Therefore, the operation force required for the movement of the gate 1 is completely different from that of the gate without the movement control device 5. Can be operated without change. Further, when the handle 21 of the gate 1 is not swung, that is, when the operator is away from the gate 1, the braking means 6 always applies a braking force to the wheel 3 </ b> A. Even if the force by etc. acts on the gate 1, the gate 1 does not run by itself. Further, in a state where the handle 21 of the gate 1 is swung, that is, in a state where the operator is moving the gate 1, if the operator is not at the moving end of the gate 1 where the handle 21 can be gripped, Since 1 cannot be moved, it is possible to prevent a collision with an obstacle existing on the movement locus of the gate 1 in advance.

In the above embodiment, the braking means 6 applies a braking force to one of the plurality of wheels. However, the braking force may be applied to the plurality of wheels 3 simultaneously. The releasing means for releasing the brake force is a mechanical type using the connecting wire 71, but it may be an electric type for contacting or releasing the brake pad with the wheel by the action of an electromagnet or the like.
Moreover, the position of the wheel on which the braking force is applied is effective because the wheel near the position of the center of gravity of the gate 1 is reliably in contact with the passage portion T.

Front view of the gate of the present invention The whole figure showing the movement control device of the present invention gate The principal part enlarged view showing the relationship of the wheel and rail in this invention gate Explanatory drawing showing the attachment part of the handle in this invention gate It is a front view showing the swing of the handle in the gate of the present invention, where (a) shows a neutral state and (b) shows a swinging state. It is a cross section showing the swing of the handle in the gate of the present invention, where (a) shows a neutral state and (b) shows a swinging state. FIG. 7 is a cross-sectional view taken along line AA in FIG. 6, where (a) represents a neutral state and (b) represents a swinging state. FIG. 7 is a cross-sectional view taken along line B-B in FIG. 6, where (A) is a neutral state and (B) is a swinging state.

Explanation of symbols

1 Gate
2 Door
3,3A wheel
5 Movement control device
6 Braking means
7 Release means
21 Handle
61 Brake pads
71 Connecting wire
T passage

Claims (1)

A gate that includes a plurality of wheels at the lower part of the door body and moves so as to be able to open and close the passage portion, and includes a brake pad that can come into contact with the wheel, and an elastic member that urges the brake pad to come into contact with the wheel, Braking means that always applies braking force to at least one wheel, and release means that is connected to a gate opening / closing handle located at the gate moving end and releases the braking force by swinging in the gate moving direction. A gate characterized by having a movement control device consisting of

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