JPH11107622A - Motor-driven expansion type gate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a work executing cost by a method wherein a limit switch to detect the full closing state of an expansion contraction gate is eliminated through cut-off of energization through detection of the overload of a drive motor and a wiring work pertaining to the limit switch is eliminated. SOLUTION: A push-pull chain 110 is inserted in a bellows type tube cover 111 arranged at the lower part of a door gate constitution body 101, and through engagement of a sprocket 112 in a fixed stay 102, the gate constitution body 101 is expanded and contracted through rotational drive of a motor M. When a free end frame 106 of the gate constitution body 101 makes contact with a door collision stay 103 during closing operation of the gate, the motor M is brought into an overload, which is detected by an overload detecting circuit to cut off energization. Thus, a need for a limit switch to detect the full closed state of the gate is eliminated and a wiring work following arrangement of the limit switch is eliminated. Further, since for detection of a full opening state, a switch body is arranged and a dog is arranged on the gate constitution body 101 side, a wiring work only on the fixed stay 102 side suffices for a wiring work.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric telescopic gate in which a gate structure is composed of a frame, a link structure or a pantograph structure, and more particularly to simplifying construction work and reducing construction costs. The present invention relates to an electric telescopic gate that can be used.

[0002]

2. Description of the Related Art In an electric telescopic gate, there are a gate having a frame and a link structure and a gate having a pantograph structure. First, the former (the electric telescopic gate in which the gate structure is formed of a frame and a link structure) will be described with reference to FIGS. The electric telescopic gate of this example will be described as a one-side open / close type.

[0003] The electric telescopic gate is made of, for example, aluminum, and as shown in FIG. 2, as shown in FIG. A door stop support 103 vertically erected from
A travel guide 104 horizontally laid on the installation surface G so as to be located between the fixed support 102 and the door stop support 103.
And a fixed frame 10 fixed to the fixed column 102
5, a free end frame (door frame) 106 which approaches and separates from the door stop support 103, and a plurality of intermediate frames 107 disposed between the fixed frame 105 and the free end frame 106. Frame 105, 10
A plurality of pantograph-type links 108, which are connected to each other so as to extend and contract in a substantially parallel state, and are rotatably attached to the lower ends of the free end frame 106 and any intermediate frame 107 so as to move on the travel guide 104. A traveling roller 109 that rotates, a push-pull chain 110 whose base end is housed in a storage part provided inside the fixed support 102 so as to be able to be taken in and out, and whose tip is connected to the free end frame 106; 105, 10
Telescopic bellows-like tube cover 1 erected between 6, 107 and penetrated by the push-pull chain 110
11 is provided. Note that each of the frames 105, 1
06, 107 and the link 108, the gate structure 101
Is configured. In addition, the above-described tube cover 111
Is made of an elastic material such as rubber.

As shown in FIG. 3, a guide 113 for guiding the push-pull chain 110 in or out is provided in a storage portion provided inside the fixed support column 102.
Is provided. Further, a sprocket 112 for inserting and removing the push-pull chain 110 is provided in the storage portion of the column 102. Furthermore, fixed support 1
02 includes a motor M. The motor M is connected to the sprocket 112 via a speed reduction mechanism or the like (not shown).

[0005] The fixed frame 105 is provided with a frame 114 having a guide hole for the push-pull chain 110. A spherical edge at the end of the tube cover 111 is held and fixed to the frame 114 via a tube holding member, a connection bracket, a pressing member, and the like. The free end frame 106 is provided with a frame 117 having a guide hole for the push-pull chain 110. Frame 117
The ball edge at the end of the tube cover 111 is held and fixed via a tube holding member, a connection bracket and a pressing member. The frame 117 has a push-pull chain 11
0 is fixed at the tip. Further, as shown in FIG. 4, the intermediate frame 107 has a substantially arch shape that opens downward, and a lower frame 120 is fixed between lower ends thereof. The lower frame 120 has the tube cover 1
A spherical edge at one end is fixed via a tube holding member and a holding member. As shown in FIG. 4, the intermediate frame 107 includes an installation frame 123 that rotatably supports the link frame 108 and an installation frame 12 of the link frame 108 that is connected to both ends of the link frame 108.
A guide frame 124 for guiding rotation about the center 3 is provided.

Next, the operation of the electric telescopic gate in which the gate structure 101 is constructed from the above-described frame and link structure will be described. First, when opening the gate structure 101 in the state shown in FIG.
A switch (not shown) or a remote control switch is opened. Then, the motor M is driven to rotate the sprocket 112 in the direction of the arrow in FIG. 3, and the rotation of the sprocket 112 causes the push-pull chain 110 to rotate.
3 is pulled in the direction of the arrow in FIG. 3 and pulled into the fixed support 102, and the movement of the push-pull chain 110 causes the frames 105, 106, 107 and the link 1 to move.
08 and the tube cover 111 contract in the direction of the arrow in FIG. 2 to open the space between the fixed support 102 and the door stop support 103. To close the opened gate structure 101, a switch (not shown) or a remote control switch is operated to "close". Then, the motor M is driven to rotate the sprocket 112 in the direction opposite to the arrow in FIG. 3, and the rotation of the sprocket 112 pushes out the push-pull chain 110 from the fixed support 102, and
The push-pull chain 110 is sent out in a direction opposite to the arrow in the middle, and the frames 105, 106,
The 107, the link 108, and the tube cover 111 extend in the direction opposite to the arrow in FIG. 2 to close the space between the fixed support 102 and the door stop support 103.

As an electric telescopic gate in which the gate structure 101 is constituted by the above-mentioned frame and link structure, for example, Japanese Patent Application No. 5-280523 (Japanese Patent Application Laid-Open No. 7-10987).
0) and Japanese Patent Application No. 7-280241 (Japanese Unexamined Patent Application Publication No. 9-125).
No. 846). Although the above-mentioned electric telescopic gate has been described as a one-side openable type, the electric telescopic gate may be a double-sided openable type.

Next, the latter (electrically-operated telescopic gate in which the gate structure is constituted by a pantograph structure) will be described with reference to FIGS. The electric telescopic gate of this example will be described as a one-side open / close type.

This electric telescopic gate has a fixed column 3 fixed vertically to the installation surface G, and a first column fixed to the fixed column 3.
A fixed end member A in which one end 10 of the door body 1 and one end 20 of the second door body 2 are openably and closably mounted in a V-shape when viewed from a plane by a rotating shaft (small black circle in the figure); Prop 4
A free end member B in which one end 10 of the first door body 1 and one end 20 of the second door body 2 are rotatably mounted to be openable and closable in a V-shape viewed from a plane by a rotating shaft 6; An intermediate member C in which the center of the door body 1 and the center of the second door body 2 are rotatably mounted to be openable and closable in an X-shape as viewed from a plane by a rotating shaft 6.
And the base end is stored so as to be able to enter and exit the fixed support column 3,
And a push-pull chain 8 whose tip is connected to the free column 4. The other end 10 of the first door 1 and the other end 20 of the second door 2 of the fixed end member A, and both ends 10 and the second end of the first door 1 of the plurality of sets of intermediate members C.
Both ends 20 of the door 2 and the other end 10 of the first door 1 and the other end 20 of the second door 2 of the free end member B are opened and closed by the rotating shaft 7 (small white circle in the figure). It is movably and continuously attached to form a gate structure 100 having a pantograph structure.

A guide (not shown) for guiding the push-pull chain 8 in or out is provided in a storage portion provided inside the fixed support column 3 described above.
A sprocket 80 for inserting and removing the push-pull chain 8 is provided in the storage portion of the fixed support 3. Further, a motor M is built in the fixed support 3. The motor M is connected to the sprocket 80 via a speed reduction mechanism or the like (not shown). Note that the length of the first door 1 and the second door 2 of the fixed end member A and the first door 1 and the second door 2 of the free end member B as viewed from the plane are the above-described lengths. The length of the intermediate member C when viewed from the plane of the first door 1 and the second door 2 is about one half. In the figure, 5
Numeral denotes a door stop supporting column which is fixedly erected vertically from the installation surface G at a distance from the above-mentioned fixed column 1.

The above-mentioned first door 1 has a rectangular panel shape. On the other hand, the second door 2 is a rod-shaped upper second door 2 </ b> A arranged on the upper side of the first door 1.
And a lower second door body 2 </ b> B having a rod shape disposed on the lower side of the first door body 1. Adjacent first door body 1 described above
The two ends of the first link 91 are rotatably attached to the middle point of a line connecting the opening / closing rotation center (rotation shaft 6) on the lower side and the left and right ends 10 by the rotation shaft 9. ing. In addition, both ends of the second link 92 are pivoted by the pivot shaft 9 at the midpoint of the line connecting the open / close pivot center (the pivot shaft 6) of the adjacent lower second door body 2B and the left and right ends 20 respectively. It is rotatably mounted. The center of the first link 91 and the center of the second link 92 are rotatably mounted to be openable and closable in an X-shape when viewed from a plane by a rotating shaft 62. Chain supports 60 and 61 are provided on the above-described rotating shafts 6 and 62, and a bellows-shaped tube cover 81 that can expand and contract is provided between the chain supports 60 and 61. The push-pull chain 8 described above is penetrated so as to run. On the installation surface G, a guide rail 50 is laid in a linear direction connecting a plurality of open / close rotation centers (rotation shafts 6) of the first door body 1 and the second door body 2. On the other hand, a guide roller 51 is rotatably mounted at the lower end of the above-mentioned free support column 4 and at the opening / closing rotation center (rotation shaft 6) of the above-mentioned first door body 1 and second door body 2. ing. The guide roller 51 is engaged with the guide rail 50. In addition, the above-mentioned adjacent lower second
A caster wheel 90 running on the installation surface G is attached to the alternate end portion 20 of the door body 2 via an attachment plate.

Next, the operation of the electric telescopic gate in which the gate structure 100 has the above-described pantograph structure will be described. First, FIG. 5A and FIGS.
, That is, the gate structure 10 in a closed state.
To open 0, a switch (not shown) or a remote control switch is operated to “open”. Then, the motor M
7, the sprocket 80 rotates in the direction of the arrow in FIG. 7, and the rotation of the sprocket 80 pulls the push-pull chain 8 in the direction of the arrow in FIG. 7 to FIG. Push-pull chain 8
1st door body 1 and 2nd door body 2
However, through the V-shaped or X-shaped state shown in FIG. 5 (B), it is folded and shortened as shown in FIG. 5 (C), and the space between the fixed support 3 and the door stop support 5 is opened. To close the opened gate structure 100, a switch (not shown) or a remote control switch is operated to "close". Then, the motor M is driven to rotate the sprocket 80 in the direction opposite to the arrow in FIG. 7, and the rotation of the sprocket 80 pushes out the push-pull chain 8 from the fixed support 3, and the arrow in FIGS. The first door body 1 and the second door body 2 which have been sent out in the opposite direction and folded with the movement of the push-pull chain 8 are in a V-shaped or X-shaped state shown in FIG. As shown in FIG. 5 (A), the free post 4 abuts on the door stop post 5 as shown in FIG. 5 (A), and the first door 1 extends between the fixed post 3 and the door stop post 5. And the second door 2 closes.

An example of an electric telescopic gate in which the gate structure 100 has the above-mentioned pantograph structure is disclosed in Japanese Patent Application No. 8-119132. In addition,
Although the above-described electric telescopic gate has been described as a one-side openable type, this electric telescopic gate may be a double-sided openable type. In addition, as the electric telescopic gate in which the gate structure is configured from the above-mentioned pantograph structure, in addition to the above-described first and second doors 1 and 2 having a three-part type, a two-part type and a four-part type It may be a split type or the like. For example, JP-A-61-
No. 92287, the horizontal rail of the first door body and the horizontal rail of the second door body are alternately arranged up and down, and both ends of the horizontal rail of the first door body and the two Both ends of the horizontal rail may be connected by vertical columns, and the first door body and the second door body may be attached so as to be able to open and close.

The above-mentioned gate structure 101 or 10
In the electric telescopic gate having a frame 0, a link structure or a pantograph structure, a motor means (not shown) for energizing the motor M and a motor which detects a state in which the gate structure 101 or 100 is fully opened are provided. A full-open-side shutoff means (not shown) for shutting off the power supply to the M;
A fully-closed shut-off means (not shown) for detecting a state in which the motor 1 or 100 is fully closed and interrupting the supply of power to the motor M; In particular, a limit switch is used as the fully-closed shutoff means. The limit switch is provided on a switch body (not shown) provided on the door stop support 103 or 5 of the gate structure 101 or 100, and is provided on the free end frame 106 or the free support 4 facing the switch body and operates the switch body. When the gate structure 101 or 100 reaches the fully closed state, the free end frame 106 is attached to the door stop support 103 or 5.
Alternatively, when the free strut 4 approaches and the dog hits the switch main body and the switch main body operates, the power supply to the motor M is cut off.

[0015]

However, the limit switch as the fully-closed shut-off means used in the above-mentioned conventional electric telescopic gate has a switch body provided on the door stop support 103 or 5 side. On the other hand, electric equipment such as a motor M is provided on the side of the fixed support 102 or 3 that is erected from the door stop support 103 or 5. In order to electrically connect between the switch body on the side of the door stop post 103 or 5 and the switch body on the side of the fixed stand 102 or the motor M on the side of the fixed post 102, which are erected from each other,
It is necessary to electrically wire between the switch body on the side of the door stop post 103 or 5 that is separated from the main body and the electric equipment such as the motor M on the side of the fixed support post 102 or 3. For this reason, in the conventional electric telescopic gate, the construction work of electrically wiring between the switch body on the side of the door stop post 103 or the switch body on the 5 side and the electric device such as the motor M on the side of the fixed column 102 or 3 is separated from each other. There is a problem that the construction is complicated and the construction cost for the construction work is high.

An object of the present invention is to provide an electric telescopic gate capable of simplifying construction work and reducing construction cost.

[0017]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention, as a fully-closed side shutoff means, detects an overload that occurs when the gate structure reaches a fully-closed state, and applies a load to the motor. It is characterized by using an overload detection circuit that cuts off the current.

As a result, in the electric telescopic gate of the present invention, the overload detection circuit as the fully closed side shutoff means can be provided on the fixed support side, so that electric wiring can be provided on the fixed support side. There is no need for electrical wiring between the fixed strut and the door stop strut which are separated from each other. For this reason, the electric wiring construction work can be omitted, and the construction work can be simplified and the construction cost can be reduced accordingly.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Two embodiments of an electric telescopic gate according to the present invention will be described below with reference to FIGS. FIG. 1 is an electric circuit diagram showing a first embodiment of an electric telescopic gate according to the present invention.

In FIG. 1, reference numeral 200 denotes a remote control switch. The remote control switch 200 is used to perform a fully open or fully closed operation of the gate structure, and to “open” by an “open” operation or a “close” operation.
A signal or "close" signal is output to a CPU (201) described later. This remote control switch 2
As the 00, there is a type provided on a fixed support of the gate member and operated manually, or a type provided separately from the electric telescopic gate and operated remotely.

Reference numeral 201 denotes a CPU. This CPU (20
1) A function of driving the motor M to rotate forward or reverse through a switch circuit 202 to be described later based on an input signal (“open” signal or “close” signal) from the above-described remote control switch 200 and a function to be described later. Overload detection circuit 2
04 or a function to cut off the power supply to the motor M via a switch circuit 202 to be described later in response to an input signal from a fully-closed limit switch 205 to be described later.

Reference numeral 202 denotes a switch circuit. The switch circuit 202 is interposed between the power supply 203 and the motor M. By the operation of the CPU (201), the power supply to the motor M, the switching of the polarity of the power supply to the motor M, and the This is to cut off the current supply to M.

Reference numeral 204 denotes an overload detection circuit serving as a fully closed side cutoff means. The overload detection circuit 204 detects an overload in the circuit that occurs when the gate structure reaches a fully closed state, and outputs a detection signal to the CPU (201),
The power supply to the motor M is cut off via the CPU (201) and the switch circuit 202. The above C
The PU (201), the switch circuit 202, the motor M, and the overload detection circuit 204 are built in the fixed support.

Reference numeral 205 denotes a full-open limit switch as a full-open side shutoff means. This fully open limit switch 2
Reference numeral 05 denotes a switch main body (not shown) provided on the fixed support column side, and a dog (not shown) provided on the intermediate frame or the first or second door body facing the switch main body to operate the switch main body. When the gate structure reaches a fully opened state, the fixed support and the intermediate frame or the first door or the second door are close to each other, and the dog hits the switch body and the switch is turned on. When the main body operates, the operation signal is output to the CPU (201),
The power supply to the motor M is cut off via the PU (201) and the switch circuit 202. The switch body of the full-open limit switch 205 is electrically connected to the CPU (201) on the fixed column side.

The electric telescopic gate according to the present invention in this embodiment has the above-described configuration, and its operation will be described below. First, when opening the fully closed gate structure, the remote control switch 200 is set to “open”.
Manipulate. Then, the "open" signal is sent to the CPU (201).
And the CPU (201) and the switch circuit 2
The motor M is driven via 02, and the gate structure is opened by the driving of the motor M. When the gate structure is fully opened, the full-open limit switch 205 is operated, and an operation signal is input to the CPU (201), and the CPU (201) is operated.
(201) and the motor M via the switch circuit 202.
Is shut off, and the gate structure in the fully closed state is fully opened.

Next, in order to close the fully opened gate structure, the remote control switch 200 is operated to "close". Then, the “close” signal is input to the CPU (201), and the CPU (201) and the switch circuit 202
, The motor M is driven, and the driving of the motor M closes the gate structure. Then, when the gate structure is fully closed, an overload occurs in the circuit, and this is detected by the overload detection circuit 204, and the detection signal is input to the CPU (201), and the CPU (201) and Switch circuit 202
, The power supply to the motor M is cut off, and the fully opened gate structure is fully closed.

As described above, in the electric telescopic gate according to the present invention in this embodiment, the overload detecting circuit 205 as the fully-closed side shutoff means can be provided on the fixed support side. Wiring can be provided, and there is no need to electrically wire between the fixed pillar and the door stop pillar that are separated from each other. For this reason, the electric wiring construction work can be omitted, and the construction work can be simplified and the construction cost can be reduced accordingly. In addition, since the overload detection circuit is used instead of the fully-closed limit switch, the fully-closed limit switch becomes unnecessary, and the number of parts and the cost can be reduced accordingly.

[0028]

As is apparent from the above description, the electric telescopic gate according to the present invention, as a fully closed side shutoff means, detects an overload generated when the gate structure reaches the fully closed state and energizes the motor. Since an overload detection circuit configured of an overload detection circuit that shuts off the power supply is used, an overload detection circuit serving as the fully-closed side cutoff means can be provided on the fixed support side. Wiring can be provided, and there is no need to electrically wire between the fixed pillar and the door stop pillar that are separated from each other. For this reason, the electric wiring construction work can be omitted, and the construction work can be simplified and the construction cost can be reduced accordingly.

[Brief description of the drawings]

FIG. 1 is an electric circuit diagram showing an embodiment of an electric telescopic gate according to the present invention.

FIG. 2 is a front view showing a fully closed state of an electric telescopic gate in which a gate structure is composed of a frame and a link structure.

FIG. 3 is an explanatory view showing a fully-opening operation of the gate member.

FIG. 4 is a side view of the intermediate frame.

5A and 5B show an electric telescopic gate in which the gate structure has a pantograph structure, wherein FIG. 5A is a schematic plan view showing a fully closed state, and FIG. FIG. 3C is a schematic plan view showing a fully opened state.

FIG. 6 is an exploded perspective view of the gate structure.

FIG. 7 is also a front view of the fully closed state.

FIG. 8 is an enlarged front view of a portion VIII in FIG. 7;

FIG. 9 is also a schematic partial plan view of the fully closed state.

FIG. 10 is a schematic partial plan view of a fully opened operation or a fully closed operation.

FIG. 11 is also a schematic partial plan view of the fully closed state.

[Explanation of symbols]

200: Remote control switch, 201: CP
U, 202: switch circuit, 203: power supply, 204: overload detection circuit (fully closed side cutoff means), 205: fully open limit switch (fully open side cutoff means), M: motor, 101
... Gate structure, 102 ... Fixed support, 103 ... Door support, 105 ... Fixed frame, 106 ... Free end frame (door frame), 107 ... Intermediate frame, 108 ... Link, 110 ... Push-pull chain, 100 ... Gate Component: A: fixed end member, B: free end member, C: intermediate member, G: installation surface, 1: first door body, 10: both ends of both upper and lower sides (left and right sides), 2: second door body, 2A: Upper second door, 2B
... Lower second door body, 20 right and left ends, 3 ... fixed support, 4 ... free support, 5 ... door stop support, 50 ... guide rail, 51 ...
Guide rollers, 6, 62, 7, 9 ... rotating shafts, 60, 61
... chain support, 8 ... push-pull chain, 90
... caster wheel, 91 ... 1st link, 92 ... 2nd link.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takehiko Mukonakano 1972 Miyatamura, Kamiina-gun, Nagano Prefecture Toyo Exterior Co., Ltd.

Claims (3)

[Claims] A fixed post having a built-in motor, a door stop post separated from the fixed post, and a gate structure that opens and closes between the fixed post and the door stop post by driving the motor. An electrically expandable telescopic gate comprising: an energizing unit that energizes the motor; a fully-opening side shutoff unit that detects a state in which the gate structure is fully opened and shuts off energization to the motor; A fully-closed-side shut-off means for detecting a state in which the body is fully closed and shutting off the current to the motor, wherein the fully-closed-side shutoff means is provided on the fixed column side. And an overload detection circuit configured to detect an overload that occurs when the gate structure reaches a fully closed state and cut off the power supply to the motor. Provided in the An electric telescopic gate, comprising: a limit switch that operates when the gate structure reaches a fully opened state and shuts off power to the motor. 2. The gate structure comprises: a fixed frame fixed to the fixed column, a plurality of intermediate frames, a free end frame, and the expandable and contractible connection of the fixed frame, the plurality of intermediate frames, and the free end frame. And a push-pull chain whose base end is housed so as to be able to enter and exit the fixed support column and whose distal end is connected to the free end frame. The drive of the motor allows the push-pull chain to enter and exit. The electric telescopic gate according to claim 1, wherein the plurality of intermediate frames and the free end frame open and close by expanding and contracting via the link. 3. The gate structure according to claim 1, wherein the fixed support has a first structure.
A fixed end member in which a door body and a second door body are attached to be openable and closable in a V-shape as viewed from a plane; A free end member mounted to be openable and closable in a U-shape; an intermediate member in which a first door body and a second door body are mounted to be openable and closable in an X-shape when viewed from a plane; A push-pull chain whose end side is housed so as to be able to move in and out of the fixed strut and whose tip is connected to the free strut; a first door body and a second door body of the fixed end member; A first door body and a second door body of the intermediate member, and a first door body and a second door body of the free end member are attached to each other so as to be openable and closable and continuous with each other; The push-pull chain moves in and out, and the first door body and the second door body expand and contract. Electric telescopic gates of claim 1, wherein the opening and closing.