JP2008240502A - Moving apparatus for automatic sliding door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a moving apparatus for an automatic door, which has a low-cost and space-saving structure, and which enables the automatic door to be manually opened/closed even during a power failure. <P>SOLUTION: In this moving apparatus for the automatic sliding door, an approximately C-shaped cross-section guide case 4 with a groove portion is installed in parallel with a moving direction on the top portion of the sliding door 1; a spiral line body 6, which is constituted by spirally winding a metal wire, is inserted into the guide case 4 so as to be connected to a shaft of a drive motor 10; an internal screwing body 12, which is equal in outside diameter to the spiral line body 6, and the surface of which is provided with screwing grooves with the same pitch, having a width and a depth for becoming equal in line diameter to the spiral line body 6, is provided inside the spiral line body 6; and the internal screwing body 12 is fixed to a bracket, projected from the side of the sliding door 1, via a connecting bracket. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a moving device for an automatic opening / closing sliding door.

  Today, many automatic doors have been introduced to the world, and various electric driving methods have been considered. As a typical example, the upper part of the sliding door that reciprocates on the rail in advance is placed on the rail in advance. A screw shaft is provided in the upper part of the door that opens and closes in a reciprocating manner, and a drive source capable of rotating in the forward and reverse directions is provided at one end of the screw shaft, and a female screw that is screwed onto the screw shaft from the door side. A drive device for an automatic opening / closing door provided with a body (see Patent Document 1) has been provided. However, although the thing of patent document 1 is space-saving, there existed a problem that it was impossible to open and close a door once a power failure occurred and a motor stopped moving. The present inventor has solved this problem by increasing the lead of the screw shaft. However, there is a drawback that it is too expensive to manufacture the rotating shaft by cutting. Therefore, an automatic sliding door drive device (see Patent Document 2) in which a spiral wire rod shaft is manufactured by spirally winding a metal wire has been provided.

  Japanese Utility Model Publication No. 2-53478   Japanese Patent Application No. 2006-357274

  However, this spiral rod axis is easy to bend when a force is applied to the direction perpendicular to the longitudinal direction, and if it is long, it is easy to bend due to its own weight, so it is rotated in the case guide. occured. The present invention has been provided for the purpose of solving such problems.

  In order to solve the above-mentioned problems, the problem was solved by putting the mover, which was originally meshed from the outside of the spiral filament shaft, inside. That is, the present invention provides a guide case having a groove portion with a substantially C-shaped cross section at the top or front of a sliding door which is attached to a sliding door which is opened and closed by a wheel on a rail or an inner rail of a slide rail via a connector. A spiral wire body, which is provided in parallel with the sliding direction of the sliding door and spirally wound with a metal wire at a predetermined pitch, is inserted into the guide case with at least one end joined to the shaft, and this shaft is inserted into the drive motor. It is axially connected, and the inside of the spiral filament has the same outer diameter as the outer diameter of the spiral filament, and the surface has the same groove width and depth as the diameter of the spiral filament on the surface. An internal threaded body having a groove with the same lead angle as the linear body is provided in advance in the spiral linear body as a slider for moving the sliding door in advance, and the internal threaded body is configured to be non-rotatable and move. It is connected to a mounting bracket pulled out from the side, and the helical pitch of the spiral filament is set to a pitch that allows forward and reverse rotation with the drive motor when the sliding door is manually opened and closed during a power failure. It is an automatic sliding door moving device.

The automatic sliding door drive device of the present invention is set so that when the sliding door is manually opened and closed during a power failure, the helical pitch (lead) of the spiral wire body can be rotated forward and backward with the drive motor. This is possible and secures safety during manual operation. In addition, the spiral rod body made by spirally winding a metal wire with a large lead is easy to manufacture and can be manufactured in large quantities. Since a core shaft is not required, costs such as material costs and manufacturing costs are reduced. Cost can be reduced. Further, since the moving element is an internal threaded body and is connected to the sliding door inside the spiral linear body, the internal threaded body plays the same role as one bearing for the spiral linear body. The amplitude of its own vibration is reduced, and the vibration sound during rotation is reduced.
Further, since the internal threaded body, which is a moving element, is housed in the rotating shaft, a more compact automatic sliding door moving device can be obtained.

  The automatic sliding door driving device of the embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view when the device is attached to the embodiment, the arrow portion is an enlarged view showing the internal configuration, and FIG. 3 is a top view of the internal threaded body, FIG. 4 is a front view when the internal threaded body into which the bolt has already been inserted is meshed with the spiral linear body, and FIG. 5 is an end of the spiral linear body. It is the front view of the rotating shaft to which the end part screwing body was further adhered and fixed.

  The configuration of the embodiment will be described with reference to the drawings. In FIG. 1 and FIG. 1 is provided in parallel with the sliding direction, and a resin liner 5 having a groove aligned with the guide case 4 is fitted into the guide case 4 and a spiral filament 6 in which a metal wire is spirally wound at a predetermined pitch is provided at one end. The shaft 7 is fixedly connected to the shaft 7 by a bearing 8, and the shaft 7 is further connected to a drive motor 10 through a coupling 9. As shown in FIG. 5, the helical linear member 6 has the same outer diameter as that of the helical linear member 6 and has a threaded groove 11 having the same groove width and depth as that of the helical linear member 6 on the surface. Resin internal threaded body having the same lead angle groove as the body 6 2 is provided in advance in the helical linear member 6 as a moving member for moving the sliding door 1 open and closed, and is opened so as not to be caught in the groove of the internal screw 12 so that the internal screw 12 cannot be rotated. As shown in FIG. 4, bolts 14 and 14 are inserted in the through hole 13 in advance and exposed from a groove portion having a substantially C-shaped cross section, and on the other hand, a mounting bracket 15 pulled out from the sliding door 1 side is connected via a connecting bracket 16. Two bolts 14 and 14 are fastened and connected with nuts 18 and 18, and the helical pitch of the helical linear body 6 is such that when the sliding door is manually opened and closed during a power failure, the drive motor can rotate forward and backward. It is a moving device of an automatic sliding door that is set to "." Control of these opening and closing operations is automatically opened and closed by devices in the control box 19.

  Here, the internal threaded body 12 that is a moving element is directly attached to a bracket 15 that is different from the mounting bracket 17 of both the front and rear suspension wheels 3, and the two bolts 14 and 14 are connected to the bracket 15 via the connecting bracket 16. 18, but the inner screw 12 as a mover is connected to the mounting bracket 19 for the suspension vehicle 3 by directly connecting the two bolts 14, 14 with the nuts 18, 18 via the connection bracket 16. May be. The guide case 6 and the resin liner 7 may be integrated by resin molding in advance. In the embodiment, the guide case 6 is provided in the upper part of the sliding door 1, but the two bolts 14 from the internal threaded body 12, which is a moving element, are brought in front of the movable suspension 3 to change the shape of the connecting bracket 16. , 14 may be connected to the connecting bracket 16 with nuts 18, 18.

  Further, here, the bolts 14 and 14 are passed through the internal threaded body 12 which is a moving element in advance and then passed through the spiral linear body 6 into the guide case 6, and later the bolts 17 and 17 are connected to the connecting bracket 10. The bolts 17 and 17 are first attached to the connection bracket 16 in advance, and the internal threaded body 12 that has been passed through the spiral wire 6 and placed in the guide case 6 is first penetrated. The bolts 17 and 17 may be passed through the hole 13 later. In this case, the nut 18 is unnecessary and the bolts 14 and 14 can be short.

  Further, when the internal threaded body 12 is further cut in half as shown in FIG. 5 and bonded to the end portion of the spiral linear body 4 which is the rotating shaft of this embodiment, the end threaded body 20 and The guide case forms a bearing at the end, and the amplitude caused by the vibration of the shaft during rotation is further reduced inside the guide case, and the sound is quieter.

Next, the operation will be described. When a start switch (not shown) provided in the sliding door 1 is activated, the drive motor 10 is rotated by a command from the control box 19 and the shaft 7 is rotated via the coupling 9. The spiral filament 6 joined to the shaft 7 rotates.
The internal threaded body 12 meshed with the spiral linear body 6 moves along with the rotation of the spiral linear body 6, and the sliding door 1 connected by the movement of the internal threaded body 12 moves on the rail 2. It moves with the suspension vehicle 3, and the sliding door 1 is automatically opened. At the time of closing, the sliding door 1 is closed by the reverse rotation of the drive motor 11 and the internal screw 12 moving in the reverse direction. The fully open / fully closed confirmation stop and the forward / reverse rotation of the drive motor 10 by the sensor in the middle of opening / closing are all controlled by commands from the control box 19.

  Further, at the time of a power failure, since the lead of the spiral pitch provided on the spiral wire body 6 is set to rotate together with the motor shaft by manually moving the sliding door 1 in advance, it can be manually opened and closed. In addition, the embodiment is that the rail is on the upper part of the sliding door and is suspended and mounted by the movable suspension car, but even if the rail is on the ground and the sliding door reciprocates by the car, the configuration of the moving device is Similarly, when a slide rail is used in place of the rail and the suspension wheel and a sliding door is provided on the inner rail via a connecting metal fitting, the same moving device configuration can be used.

An enlarged view showing the internal configuration in the front view in which the present apparatus is attached to the embodiment. Sectional view of the main part in FIG. Top view of internal thread Front view when the internal threaded body with the bolt inserted is engaged with the spiral linear body Front view of a rotating shaft with an end threaded body bonded and fixed to the end of the helical linear body

Explanation of symbols

2, rail 3, suspension wheel 4, guide case 5, resin liner 6, spiral linear body 10, drive motor 12, internal threaded body 13, through hole 14, bolt 15, mounting bracket 16, connection bracket 19, control box 20, End threaded body

Claims (1)

  A sliding guide that is attached to an inner rail of a sliding door that is opened and closed by a wheel on a rail or an inner rail of a sliding rail via a coupling tool and that has a groove portion with a substantially C-shaped cross section at the top or front of the sliding door. A spiral wire body in which a metal wire is spirally wound at a predetermined pitch inside the guide case is inserted through at least one end side of the shaft, and the shaft is axially connected to the drive motor. The inside of the spiral filament has the same outer diameter as the outer diameter of the spiral filament, and the surface has the same groove width and depth as the diameter of the spiral filament, An internal threaded body having a groove with the same lead angle is provided in advance in the spiral striatum as a slider for moving the sliding door in advance, and the internal threaded body is configured to be non-rotatable and pulled out from the moving sliding door side. The automatic sliding door is connected to a mounting bracket, and the helical pitch of the helical linear body is set to a pitch that allows the drive motor to rotate forward and backward when the sliding door is manually opened and closed during a power failure. Mobile equipment

Images