JP2006200209A - Door device installed in inlet of play instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door device stopping the rotation of doors so that nobody can get hurt even if a person is caught between the doors in the door device provided to an inlet in the case of getting in a play instrument and rotating the doors by a motor with a rotary shaft as the center. <P>SOLUTION: A clutch 11 stopping the rotation of a driving shaft 16b by causing a slip when torque loading more than fixed one acts is made to intervene between a main shaft of the motor 8 and the driving shaft rotating the doors 2a and 2b, the clutch 11 consists of a metal plate 12 and a resin plate 13 fitting magnetic plates 14, etc. to a recess section, and the magnetic plates 14 are adhered to the metal plate 12 by magnetic force. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an entrance door for riding a playground equipment used by children, particularly infants.

  Various amusement equipment is installed in the amusement park, and a fence with a single entrance is installed around it to prevent entry from any location. Of course, there are game devices that do not have a fence, but when the fence is installed, an entrance is required. At the entrance, there is the simplest way to cross the chain, and sometimes there is an automatic door.

  There is no problem if there is an attendant at the entrance, but if you only pass a single cord at the entrance, there will be a large space underneath, and small children and infants will pass through this space and pass the cord. Meaning disappears. Therefore, it is often provided with a door device that opens and closes by rotating around a vertical axis, such as an open door. The door can close the entire entrance space, but the timing of entering from the entrance is delayed. There is also a risk of injury from being caught in the door.

  FIG. 9 shows a door frequently used at the entrance of the game machine. A fence (I) is set up around the game device, the fence (I) has a height that a child cannot enter, and a space (C) of a size that a child cannot pass through. C) A plurality of vertical bars (b), (b) ... forming upright stands at a constant pitch. At the entrance (d), two doors (e) and (e) are attached to poles (f) and (f) standing on both sides.

  The two doors (e) and (e) are attached in pairs. When the doors (e) and (e) are closed, there is no space left for the child to enter from the entrance (d). The doors (e) and (e) are provided with a plurality of horizontal rails on the outer peripheral frame. By the way, when the doors (e) and (e) are automatically opened and closed by a motor, as shown by the dotted lines in FIG. You can enter inside from the entrance (d). The opened doors (e) and (e) rotate again to close the entrance (d).

  However, children and infants enter when the doors (e) and (e) are opened, but they may be caught by the doors (e) and (e) that are about to close with a delay, resulting in injury. do. If the door (e) and (e) are controlled so that the opening and closing operations are slow, there is no effect as a door for closing the entrance (d), both doors (e) when opening and closing at a certain speed, The risk of being caught by (e) increases.

  As described above, the conventional open / close door has the above-described problems. The problem to be solved by the present invention is this problem, and it is installed at the entrance of a playground equipment equipped with a safety mechanism so as not to be injured even if the entry timing is delayed and caught in the door. An open / close door device is provided.

  The door according to the present invention opens and closes by rotating around a rotating shaft that stands vertically, and the operation is the same as the doors (e) and (e) shown in FIG. The number of doors that can be rotated around the rotation axis is not limited to two, but can be only one. By the way, the rotation shaft of the door is driven to rotate by a motor, but when a person is caught in the door, a clutch that interrupts the rotation of the motor is interposed so that the rotation shaft does not rotate.

  The clutch is composed of a metal plate, a resin plate, and a plurality of magnet plates interposed between the two plates, and the magnet plate is fitted and attached to a recess formed on the resin plate surface. The magnet plate is attracted to the metal plate by a predetermined magnetic force, and the rotation of the motor can be transmitted to the rotation shaft of the door via the clutch. However, when a person is caught in the door and a large load is generated on the rotating shaft, the clutch is operated and slip occurs between the magnet plate and the metal plate, and the rotation of the motor is blocked by the clutch. .

  Further, in the present invention, a plate cam can be superposed on the metal plate or resin plate, and the rotation angle of the door can be controlled by this plate cam. That is, a limit switch is arranged around the plate cam, and the rotation angle of the plate cam is detected by the limit switch. However, the sensor is not limited to the limit switch.

  The door of the present invention is opened and closed by a motor. However, since a clutch is interposed between the motor and the door rotation shaft, the clutch slips when a person is caught in the door. The rotation stops. Therefore, children and infants are not caught by the door and injured, and the motor can be protected. The clutch has a simple structure in which a magnet plate is sandwiched between a metal plate and a resin plate, and its manufacturing cost is reduced. Further, the strength of the magnetic force of the magnet can be selected as necessary, and even if the magnet has the same strength, the transmission torque can be adjusted by adjusting the number of intervening magnets.

  1-5 has shown the opening-and-closing state of the door installed in the entrance. In the set shown in the figure, doors 2a and 2b are attached in pairs to open and close the entrance provided in the center of the base 1, and side rails 3a and 3b are provided outside the doors 2a and 2b. Standing up. Therefore, a fence is provided around the area where the play equipment is installed, and an automatic opening / closing entrance can be made by arranging a set shown in the figure in a partial opening of the fence. Therefore, it is not necessary to perform on-site construction, and it is completed only by installing the set manufactured at the factory.

  By the way, the doors 2a and 2b have rotating shafts 4a and 4b, and the entrance 5 opens and closes by rotating around the rotating shafts. As shown in FIGS. 1 to 5, the pair of doors 2a and 2b are rotated at the same rotation angle in the opposite direction so that the inlet 5 can be opened and closed. Sprockets are attached, and a chain 7 is wound around both the sprockets 6a and 6b, as shown in FIG. Moreover, the chain 7 is wound so that the rotation directions of the two sprockets 6a and 6b are opposite. The chain 7 is also wound around a sprocket 9 attached to a drive shaft that is rotated by a motor 8.

  In this case, the chain guide 10 is provided adjacent to the sprocket 6b in order to increase the winding circumference of the sprocket 6b attached to the rotating shaft 4b of the door 2b. Therefore, when the sprocket 9 of the motor drive shaft rotates to the right, the sprocket 6a attached to the lower end of the door rotation shaft 4a rotates the same right, but the sprocket 6b attached to the lower end of the door rotation shaft 4b rotates counterclockwise. Can be done. As a result, the doors 2a and 2b rotating around the rotation shafts 4a and 4b can be opened and closed facing each other.

  By the way, although the drive shaft 16b is rotated by the motor 8, the motor main shaft and the drive shaft 16b are not directly connected, and the clutch 11 is interposed therebetween. Accordingly, when the doors 2a and 2b are opened and closed and a person hits the driver shaft 16b and a rotational load of a certain level or more acts on the drive shaft 16b, the clutch 11 slips to block the rotation of the motor.

  FIG. 7 is a specific example showing the clutch 11. The clutch 11 includes a circular metal plate 12 and a circular resin plate 13, and a plurality of circular magnet plates 14, 14... Are attached to the resin plate 13. The upper surface 15 of the resin plate 13 is formed with a plurality of recesses, and the magnet plates 14, 14... Are fitted and attached to the recesses, and the magnet plates 14, 14. Adsorb to. Therefore, the rotation of the motor can be transmitted to the sprocket 9 via the magnet plates 14, 14.

  The drive shaft 16a is connected to the motor main shaft, and the drive shaft 16b is connected to the sprocket shaft. However, when a large load is applied to the drive shaft 16b, the drive shaft 16b is connected between the metal plate 12 and the magnet plates 14, 14,. Slip occurs. A plurality of magnet plates 14, 14,. The clutch can be controlled in size.

  A cam 17 is attached to the drive shaft 16b so as to face the resin plate 13, and limit switches 18a and 18b are attached around the cam 17, as shown in FIG. Therefore, the cam 17 rotates together with the drive shaft 16b, the rotation angle is detected by the limit switches 18a and 18b, the motor 8 is stopped at a predetermined position, and the opening and closing operation of the doors 2a and 2b is stopped at the same time. The positions where the doors 2a and 2b stop are when the entrance 5 is closed and when the entrance 5 is opened, and the degree of opening of the doors 2a and 2b can be adjusted by the cam 17. In order for the doors 2a and 2b to perform the opening and closing operation as shown in FIGS. 1 to 5, the cam 17 has an opening of 180 °, and the limit switches 18a and 18b are attached to the cam 17 accordingly.

A door device that represents the opening and closing operation of the door. A door device that represents the opening and closing operation of the door. A door device that represents the opening and closing operation of the door. A door device that represents the opening and closing operation of the door. A door device that represents the opening and closing operation of the door. The internal structure of the door device. Specific example of clutch. The relationship between the cam attached to the drive shaft and the limit switch. Entrance door provided at the entrance of a conventional fence.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base 2 Door 3 Side fence 4 Rotating shaft 5 Inlet 6 Sprocket 7 Chain 8 Motor 9 Sprocket
10 Chain guide
11 Clutch
12 Metal plate
13 Resin plate
14 Magnet plate
15 Top
16 Drive shaft
17 cams
18 Limit switch

Claims (4)

In a door device provided at the entrance when riding on a play equipment, it has a door that is rotated by a motor around a rotation axis, and a torque load of a certain level or more is applied between the motor main shaft and the drive shaft that rotates the door. When acted, a clutch is interposed to stop the rotation of the drive shaft by generating a slip. The clutch is composed of a metal plate and a resin plate in which a magnet plate is fitted in a recess, and the magnet plate is magnetically applied to the metal plate. A door device installed at the entrance of a playground equipment characterized by being adsorbed by force. The door device installed at the entrance of the play equipment according to claim 1, wherein a cam is provided for regulating the rotation angle of the door, and a limit switch for detecting the rotation angle of the cam is attached. The door apparatus installed in the entrance of the play equipment of Claim 1 or Claim 2 which installed two doors in a pair at the said entrance, and opened and closed both doors mutually. In the door device provided at the entrance when riding a playground equipment, the base is a door that is rotated by a motor around the rotation axis, and a side fence is erected adjacent to the door, and the motor spindle and door are rotated. When a torque load of a certain level or more is applied between the drive shaft and the drive shaft, a clutch that slips and stops rotation of the drive shaft is interposed, and the clutch is a resin in which a metal plate and a magnet plate are fitted in a recess. A door device installed at an entrance of a play equipment, characterized in that the magnet plate is attracted to a metal plate by a magnetic force.

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