JP2005068880A - Door of garage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door of a garage, which can accurately detect a turning position of a door body so as to accurately control the drive of a driving motor according to the result of this detection, and which can easily adjust a lower limit position of the door body and upper and lower positions thereof to predetermined positions. <P>SOLUTION: This door of the garage is equipped with: an angle detecting means 16 for detecting an angle of a turning arm 2; a control part 15 which monitors an output value of the means 16, and which controls the drive of the driving motor 4 by detecting the upper limit and lower limit positions by comparing the output value with a reference value indicating upper limit and lower limit positions of the arm 2; and a reference value adjusting means 17 for adjusting the reference value. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a garage door that rotates a door body up and down around a column with a drive motor.

  2. Description of the Related Art Conventionally, a garage door (a flip-up garage door) in which a door body is rotated up and down around a support column by a drive motor is known, for example, from Patent Document 1. As shown in FIG. 11, the garage door disclosed in Patent Document 1 has support columns 3 erected on both sides of the garage entrance and exit, and the distal ends projecting from the base ends of a pair of arms 2 connected to the door body 1. The provided pivot shafts 5 are pivotally supported on the upper portions of the corresponding columns 3, respectively, and drive motors 4 for rotating the arms 2 up and down are respectively disposed at the lower portions of the columns 3. A columnar sliding body 6 is slidably mounted up and down, and separate racks 7a and 7b are provided above and below the sliding body 6, and an arm-side sprocket 8 attached to the pivot shaft 5 has an upper rack 7a. The motor-side sprocket 9 attached to the output shaft of the drive motor 4 is engaged with the lower rack 7b, and the sliding body 6 is slid upward by the forward-driven drive motor 4. By turning the arm 2 upward, the doorway The door body 1 is positioned in a substantially horizontal state upward to open the entrance / exit, and the drive body 4 that is reversely driven is slid down the sliding body 6 to rotate the arm 2 downward to substantially close the entrance / exit. The door 1 is positioned in a vertical state so as to close the doorway.

In this garage door, opening / closing control of the door body 1 is performed by drive control of the drive motor 4 according to the rotational position of the door body. That is, when the door body 1 rotated upward reaches the upper limit position, the drive of the drive motor 4 is stopped, and when the door body 1 rotated downward reaches the lower limit position, the drive of the drive motor 4 is stopped. It is. Specifically, the drive control of the drive motor 4 is arranged at the upper limit switch S1 arranged at the upper limit position of the sliding range of the sliding body 6 and at the lower limit position of the sliding range of the sliding body 6. This is done with the lower limit switch S2. More specifically, the upper limit switch S1 and the lower limit switch S2 are attached to the upper and lower ends of the rod-like connecting body 30, and the connecting body 30 is attached to the support column 3 so that the height can be adjusted up and down.
JP-A-6-93785

  By the way, in the garage door, when the opening / closing control of the door body 1 is performed, the drive motor 4 is stopped even when the door body 1 is not positioned at the upper limit position or the lower limit position. There was a problem that drive control of the drive motor 4 was not performed. This problem is caused by the fact that the sliding position of the sliding body 6 obtained by converting the rotational motion of the arm 2 into the vertical motion is used as a criterion for the limit switches S1 and S2 as a result of intensive studies by the inventor. That is, there is a structural cause in which a drive loss or the like occurs at a conversion point of movement between the sliding body 6 and the arm 2 and the sliding position of the sliding body 6 does not accurately represent the rotation position of the door body 1. It turned out to be. Therefore, instead of the limit switches S1 and S2, it has been desired to develop a control system that can perform accurate drive control of the drive motor 4 in accordance with the rotational position of the door body 1.

  More specifically, the upper limit switch S1 and the lower limit switch S2 of the garage door are complicated to be individually arranged at predetermined positions in the support column 3, and thus are arranged in the support column 3 using the connecting body 30. However, in this structure, for example, if the position of the lower limit switch S2 is shifted in order to adjust the lower limit position of the door body 1, the position of the coupling body 30 is shifted up and down in the column 3. Thus, the position of the upper limit switch S1 also moves at the same time. That is, the upper limit switch S1 and the lower limit switch S2 cannot be finely adjusted independently, and the lower limit position and the vertical position of the door body 1 are predetermined. There was a problem that it was difficult to adjust the position.

  The present invention was invented in view of the above-described conventional problems, and can accurately detect the rotational position of the door body and perform accurate drive control of the drive motor based on the detection result. In addition, an object of the present invention is to provide a garage door that can easily adjust the lower limit position and the vertical position of the door body to a predetermined position.

  In order to solve the above-mentioned problem, the garage door according to claim 1 has a support column 3 erected on the side of the doorway of the garage, and a base end of an arm 2 whose tip is connected to the door body 1 is rotatably mounted on the support column 3. The support motor 3 for rotating the arm 2 up and down is provided on the support column 3, the door body 1 is positioned in a substantially vertical state at the doorway to close the doorway, and the door body 1 is placed in a substantially horizontal state above the doorway. In the garage door that is positioned to open the doorway, the angle detection means 16 that detects the angle of the rotating arm 2, the output value of the angle detection means 16, and the upper limit position and the lower limit position of the arm 2 are monitored. A control unit 15 that controls the drive motor 4 by detecting the upper limit position and the lower limit position by comparing the reference value shown, and a reference value adjustment unit 17 that adjusts the reference value. And

  According to this, since the angle detection means 16 detects the angle of the arm 2 directly connected to the door body 1, it can accurately detect the rotational position of the door body 1, and consequently accurately according to the rotational position of the door body 1. The drive control of the drive motor 4 can be ensured, and the upper limit position and the lower limit position of the arm 2 are determined by the control unit 15 based on the reference value. The reference value is adjusted by the reference value adjusting means 17. Since the adjustment can be made, the setting of the upper limit position and the lower limit position of the arm 2 can be easily changed. Thus, for example, the output value of the angle detection means 16 and the rotation position of the arm 2 due to the mounting error of the angle detection means 16 If there is a deviation between the upper limit position and the lower limit position of the arm 2 determined based on the reference value, the reference value adjusting means 1 By adjusting the reference value so as to match the output value of the angle detector 16, the upper limit position and the lower limit position of the arm 2 can be easily and correctly set to predetermined positions where the arm 2 should be stopped. .

  Further, the garage door according to claim 2 is the base of each arm 2a, 2b according to claim 1, in which the pillars 3 are erected on both sides of the entrance of the garage and the tip is connected to both width end portions of the door body 1. A garage door with its ends pivoted to the columns 3a and 3b and each column 3a and 3b provided with a drive motor 4 to independently drive the arms 2a and 2b, corresponding to the arms 2a and 2b. The angle detecting means 16 and the reference value adjusting means 17 are provided.

  According to this, since the angle detection means 16 and the reference value adjustment means 17 are provided corresponding to each arm 2a, 2b, for example, when the upper limit position and the lower limit position are shifted between the arms 2a, 2b, respectively. A torsional stress is generated in the door body 1, and the reference values are respectively set so as to eliminate the shift of the rotational position between the arms 2 a and 2 b by the reference value adjusting means 17 provided corresponding to the arms 2 a and 2 b. By adjusting the upper limit position and the lower limit position of each arm 2a, 2b, the level of the door body 1 can be set and the generation of torsional stress on the door body 1 can be suppressed. .

  As described above, the present invention accurately detects the rotation position of the door body by the angle detection means for detecting the angle of the arm directly connected to the door body, and accurately detects the rotation position of the door body. The drive control of the drive motor is ensured, and the upper limit position and the lower limit position of the arm are determined by the control unit based on the reference value, but this reference value can be adjusted by the reference value adjusting means. Therefore, the setting of the upper limit position and the lower limit position of the arm can be easily changed. As a result, for example, a deviation occurs between the output value of the angle detection means and the rotation position of the arm due to an attachment error of the angle detection means. Even in this case, since the reference value can be adjusted by the reference value adjusting means to match the output value of the angle detecting means, the upper limit position and the lower limit position of the arm can be easily set correctly to the predetermined positions where the arm should be stopped. If the angle detection means and the reference value adjustment means are provided for each arm in the garage door that supports the door body with the left and right arms, each arm can be adjusted by each reference value adjustment means. The left and right reference values can be adjusted to eliminate the deviation of the rotation position between them, so the upper limit position and lower limit position of each arm can be set to the same height position, ensuring the level of the door body to the door body The generation of torsional stress can be suppressed.

  The garage door of the example of embodiment of this invention is shown in FIGS. As shown in FIGS. 2 and 3, the garage door of this example is a plate-like door that has columns 3 (left column 3 a and right column 3 b) standing on both sides of a garage entrance and exits in the width direction of the entrance. The ends of the arms 2 (the left arm 2a and the right arm 2b) are connected to both width ends of the body 1, and the base ends of the arms 2a and 2b are attached to the corresponding support columns 3a and 3b so as to be rotatable up and down. A drive motor 4 (left drive motor 4a, right drive motor 4b) and a transmission mechanism are provided in each of the columns 3a and 3b, and the arms 2a and 2b are driven to rotate by the drive of the drive motors 4a and 4b. Then, the door body 1 is rotated up and down, the door body 1 is positioned substantially perpendicular to the doorway as shown in FIG. 2A, and the doorway is closed, and the doorway 1 is positioned above the doorway as shown in FIG. The door 1 is positioned in a substantially horizontal state and the doorway is opened. A garage-type garage door, which is characterized in that the rotation position of the door body 1 can be accurately determined even if an attachment error of the means for detecting the rotation position of the door body 1 (angle detection means 16 described later) occurs. In other words, the device is controlled so that the drive motor 4 is accurately controlled based on the detection result, and the level of the door body 1 can be secured. Details will be described below.

  The door body 1 is a plate having a width dimension substantially the same as the width dimension of the doorway of the garage, and the ends of the arms 2 are rotatably connected to both width end portions thereof. The pair of arms 2 has a horizontal pivot shaft 5 integrally connected to their base ends, and each pivot shaft 5 is inserted into a pivot hole (not shown) drilled horizontally in the upper part of each column 3a, 3b. The arms 2a and 2b are pivotally supported by the support columns 3a and 3b so as to be rotatable up and down. In the figure, reference numeral 12 denotes a rigid reinforcing cross member that is rigidly joined to each arm to increase the torsional rigidity of the door body 1. Further, the pivot shaft 5 is connected to the drive motor 4 through a transmission mechanism inside the column 3. This transmission mechanism is a mechanism for transmitting the drive of the drive motor 4 to the arm 2, and as shown in FIGS. The arm-side sprocket 8 is fixed to the support shaft 5 and meshed with the lift body 6, and the motor-side sprocket 9 is fixed to the output shaft of the drive motor 4 and meshed with the lift body 6. Specifically, the elevating body 6 is a prismatic member, and smooth vertical movement within the column 3 is possible by rolling a guide roller 6 a provided at an appropriate position on the inner wall surface of the column 3. Chain-like racks 7a and 7b extending vertically are provided on two adjacent side surfaces of the lifting body 6, and the arm-side sprocket 8 is engaged with one rack 7a, and the motor-side sprocket 9 is engaged with the other rack 7b. Meshed.

  When the drive motor 4 is driven to rotate in the forward direction, as shown in FIG. 2 (b), the elevating body 6 slides upward in the column 3, and the pivot shaft 5 and the arm 2 are rotationally driven upward, and the doorway The door body 1 is raised so as to open. On the other hand, when the drive motor 4 is driven in the reverse direction, as shown in FIG. 2 (a), the elevating body 6 slides downward in the column 3, the pivot shaft 5 and the arm 2 are rotationally driven downward, and the doorway is closed. Thus, the door body 1 is lowered. In addition, an urging mechanism that pushes the elevating body 6 upward is built in the column 3. According to this urging mechanism, the lifting of the arm 2 by the drive motor 4 is assisted, and the collision of the door 1 with the doorway on the ground is avoided. In this example, the gas spring 10 is used for the biasing mechanism, but a coil spring may be used instead.

  As shown in FIG. 6, the garage door of this example is provided with a remote control switch 13 and an installation switch 14 that operate to start driving the door body 1. The remote control switch 13 is a separate remote control operation rod 13a possessed by the user, an antenna 11 that receives a radio signal transmitted by operating an operation key of the remote control operation rod 13a, and an analog-digital conversion of the radio signal received by the antenna 11. The analog-to-digital conversion unit 13b is connected, and the antenna 11 is connected to the analog-to-digital conversion unit 13b, and the analog-to-digital conversion unit 13b is connected to the control unit 15 that controls the opening and closing operation of the garage door. . On the other hand, the installation switch 14 is installed on the outer surface of the column 3 and is directly connected to the control unit 15. Thus, the user of the garage door of this example can perform remote operation of the garage door from a location away from the garage door by the remote control switch 13 (for example, in the vehicle) and operation of the garage door near the garage door by the installation switch 14. Both are possible, and the usability is improved.

  By the way, in the garage door of this example, opening / closing control of the door body 1 which stops the door body 1 driven with the said remote control switch 13 or the installation switch 14 is also performed. In other words, in a state where the drive motor 4 is rotated forward to rotate the door body 1 upward to open the doorway, the drive motor 4 is stopped when the door body 1 reaches the upper limit position. In the state where the drive motor 4 is reversely driven to rotate the door body 1 downward to close the doorway, the drive of the drive motor 4 is stopped when the door body 1 reaches the lower limit position. Control is done. The opening / closing control of the door body 1 is performed by drive control of the drive motor 4 by cooperation of the angle detection means 16 for detecting the angle of the rotating arm 2 and the control unit 15. Specifically, a reference value indicating the upper limit position and the lower limit position of the arm 2 is set in advance in the control unit 15, and the output value of the angle detection means 16 that detects the angle of the rotating arm 2 is constantly monitored, When the output value of the angle detection means 16 matches the reference value, it is determined that the arm 2 is at the upper limit position or the lower limit position, and the drive motor 4 is controlled (stopped).

  Here, as shown in FIG. 6, the control unit 15 is housed in the control box 15 a and is disposed on one of the support columns 3 (the left support column 3 a in this example). Reference value adjusting means 17 for adjusting the reference value is connected. Specifically, as shown in FIG. 1, the control unit 15 includes a lower limit correction unit 18 and an upper limit correction unit 19 that are connected to the reference value adjusting unit 17 and change the setting of the reference value, and the lower limit correction unit 18 and the upper limit correction unit 19. The motor command generation unit 20 is connected to the correction unit 19 and issues a drive instruction for the drive motor 4. The motor command generation unit 20 is connected to the drive motor 4 via a motor drive unit 27 that controls energization of the drive motor 4. In this example, the lower limit correction unit 18 includes a left lower limit correction unit 18a and a right lower limit correction unit 18b, and the motor command generation unit 20 includes a left motor command generation unit 20a and a right motor command generation unit 20b. The left motor command generation unit 20a is connected to the left drive motor 4a through the left motor drive unit 27a, and the right motor command generation unit 20b is connected to the right drive motor 4b through the right motor drive unit 27b. . The control box 15a is composed of a power switch 21, an upper limit detection lamp 22 configured to emit light when it is determined that the arm 2 is in the upper limit position, and an LED configured to emit light when it is determined that the arm 2 is in the lower limit position. Each lower limit detection lamp 23 is provided.

  The angle detection means 16 is arranged corresponding to each arm 2a, 2b (left angle detection means 16a is arranged corresponding to the left arm 2a, and right angle detection means 16b is arranged corresponding to the right arm 2b. The angle detection means 16a and 16b are connected to the control unit 15 via analog / digital conversion units 24a and 24b. Specifically, the left angle detection unit 16a is connected to the left motor command generation unit 20a via the analog / digital conversion unit 24a, and the right angle detection unit 16b is connected to the right motor command generation unit 20b via the analog / digital conversion unit 24b. It is connected. Here, the angle detection means 16 is a means for detecting the rotation angle of the arm 2 that rotates, and specifically, a rotary position sensor that detects the degree of rotation of the pivot shaft 5 that pivots the arm 2 to the column 3. It is composed of. A potentiometer is preferably used for the rotary position sensor. Since the arm 2 is directly connected to the door body 1, the angle of the arm 2 is linked to the rotational position of the door body 1 almost accurately. As described above, since the rotation position of the rotating door body 1 is accurately detected depending on the output value of the angle detection means 16 that detects the angle of the arm 2, the control unit 15 sets the rotation position of the door body 1. Based on this, it is possible to perform accurate drive control of the drive motor 4, and to perform accurate opening / closing control of the door body 1.

  By the way, if the lower limit reference value A and the upper limit reference value B set in advance by the control unit 15 as shown in FIG. 7 and the output value of the angle detection means 16 representing the lower limit position and the upper limit position of the arm 2 match, The drive motor 4 is controlled to be stopped at the lower limit position and the upper limit position of the door body 1, but if there is an installation error or the like in the angle detection means 16, the door body 1 is actually moved to the lower limit position as shown in FIG. 8. The output value of the angle detection means 16 outputs a value that coincides with the lower limit reference value A, but the output of the angle detection means 16 is actually located at the lower limit position. The output value of the angle detection means 16 that should be output may be shifted, such as when a value that does not match the lower limit reference value A is output. In such a case, in the garage door of this example, the drive control of the drive motor 4 based on the rotation position of the door body 1 is enabled by the reference value adjusting means 17 described in detail below.

  The reference value adjusting unit 17 is a unit that adjusts a reference value indicating the upper limit position and the lower limit position of the arm 2. A so-called volume (variable resistor) is used for the reference value adjusting means 17, and a knob 25 is provided on the surface of the control box 15 a that houses the control unit 15. The knob 25 is rotated using a tool such as a screwdriver. Thus, the magnitude of the correction value C can be changed by changing the resistance. The reference value adjusting unit 17 is connected to the lower limit correction unit 18 and the upper limit correction unit 19 of the control unit 15, and a correction value C corresponding to the rotation of the knob 25 is input to the lower limit correction unit 18 and the upper limit correction unit 19. It has become so. The lower limit correction unit 18 and the upper limit correction unit 19 can set a new reference value A ′ by adding the input correction value C to a predetermined reference value A. That is, the correction value C is set by adding the correction value C to the predetermined reference values A and B by making the output value of the angle detection means 16 a value that deviates from the output value that should be output. The new reference values A ′ and B ′ indicate the lower limit position and the upper limit position of the actual door body 1, so that accurate drive control of the drive motor 4 based on the rotational position of the door body 1 is enabled. is there.

  Specifically, the reference value adjusting means 17 of this example determines the lower limit position of the left lower limit adjusting means 17a for adjusting the left lower limit reference value for determining the lower limit position of the left arm 2a and the lower limit position of the right arm 2b as shown in FIG. The right lower limit adjusting means 17b for adjusting the right lower limit reference value and the upper limit adjusting means 17c for adjusting the upper limit reference value for determining the upper limit positions of the left and right arms 2 are configured. Here, the left lower limit adjusting unit 17a is connected to the left lower limit correcting unit 18a via the analog / digital converting unit 26a, and the right lower limit adjusting unit 17b is connected to the right lower limit correcting unit 18b via the analog / digital converting unit 26b. The adjusting means 17c is connected to the left upper limit corrector 19a and the right upper limit corrector 19b via the analog / digital converter 26c. The left lower limit correction unit 18a and the left upper limit correction unit 19a are connected to the left motor command generation unit 20a, and are also connected to the left lower limit correction unit 18a and the left upper limit correction unit 19a. Further, the right lower limit correction unit 18b and the right upper limit correction unit 19b are respectively connected to the right motor command generation unit 20b, and are also connected to the right lower limit correction unit 18b and the right upper limit correction unit 19b.

  As shown in FIG. 8, when the knob 25a of the left lower limit adjusting unit 17a is rotated, the left lower limit correction value C1 corresponding to the rotation of the knob 25a of the left lower limit adjusting unit 17a is the left lower limit correcting unit 18a. The left lower limit correction value C1 is added to the predetermined left lower limit reference value A1 by the left lower limit correction unit 18a to set a new left lower limit reference value A1 ′ (new left lower limit reference value A1 ′ = Predetermined left lower limit reference value A1 + left lower limit correction value C1). Similarly, when the knob 25b of the right lower limit adjusting unit 17b is rotated, a new right lower limit reference value A2 ′ is set by the right lower limit correcting unit 18b (new right lower limit reference value A2 ′ = predetermined value). Right lower limit reference value A2 + right lower limit correction value C2). Further, when the left lower limit reference value and the right lower limit reference value are adjusted in this way, the upper limit reference value also differs between the left and right arms 2. That is, the new left lower limit reference value A calculated by the left lower limit correction unit 18a is input to the left upper limit correction unit 19a, and the left upper limit correction unit 19a performs a rotation corresponding to the predetermined rotation range of the arm 2. The new left upper limit reference value B1 ′ is set by adding the new left lower limit reference value A1 ′ to the dynamic default value D (new left upper limit reference value B1 ′ = rotation default value D + new left lower limit reference value A1 ′). Similarly, a new right upper limit reference value B2 ′ is set by the right upper limit correction unit 19b (new right upper limit reference value B2 ′ = rotation default value D + new right lower limit reference value A2 ′). Thus, according to the left lower limit adjusting means 17a and the right lower limit adjusting means 17b of this example, the lower limit reference value can be set in accordance with the actual lower limit position of the arm 2 by a simple operation of rotating the knob 25. Thus, accurate drive control of the drive motor 4 based on the actual rotation position of the arm 2 is ensured. Moreover, since the rotation default value D is used to calculate the upper limit reference value, it is possible to set the upper limit reference value simultaneously with the setting of the lower limit reference value. Furthermore, at this time, since the lower limit and the upper limit position of the actual left and right arms 2 are set to the same height, it is possible to ensure the level of the door body 1 supported by the left and right arms 2. It is possible to suppress the generation of torsional stress.

  When the knob of the upper limit adjusting unit 17c is rotated, the upper limit correction value C3 corresponding to the rotation of the knob 25c of the upper limit adjusting unit 17c is input to the left upper limit correcting unit 19a and the right upper limit correcting unit 19b. The left upper limit correction unit 19a adds an upper limit correction value C3 to the new left upper limit reference value B1 ′, and sets a new left upper limit reference value B1 ″ (new left upper limit reference value B1 ″ = new Left upper reference value B1 ′ + upper limit correction value C3) and upper right correction value C3 are added to the new right upper limit reference value B2 ′ by the right upper limit correction unit 19b, and a new right upper reference value B2 ″ is set. (Further new upper right reference value B2 ″ = new upper right reference value B2 ′ + upper limit correction value C3). According to the upper limit adjusting means 17c of this example, the setting change of the rotation range of the arm 2 (that is, the degree of opening of the door body 1) can be easily performed. That is, in this example, since the upper limit reference value is calculated using the predetermined rotation value D corresponding to the predetermined rotation range of the arm 2, the upper limit adjusting means 17c is used for the rotation range of the arm 2 (that is, the door body). Therefore, it is only necessary to provide one for each of the left and right sides, thereby simplifying the structure of the garage door and reducing the cost. .

  When the rotation default value D is not used to change the reference value setting, as shown in FIGS. 9 and 10, the upper limit adjusting means 17c is a left upper limit adjusting means 17d for the left arm 2a and a right arm for the right arm 2b. It is comprised by the upper limit adjustment means 17e. The left upper limit adjusting unit 17d is connected to the left upper limit correcting unit 19a via the analog / digital converting unit 26d, and the right upper limit adjusting unit 17e is connected to the left upper limit correcting unit 19b via the analog / digital converting unit 26e. Yes. In this case, when the knob 25d of the left upper limit adjusting unit 17d is rotated, the left upper limit correction value C4 corresponding to the rotation of the knob 25d of the left upper limit adjusting unit 17d is input to the left upper limit correcting unit 19a. The left upper limit correction unit 19a adds the left upper limit correction value C4 to the default left upper limit reference value B1 to set a new left upper limit reference value B1 ′ (new left upper limit reference value B1 ′ = default left Upper limit reference value B1 + left upper limit correction value C4). Similarly, when the knob 25e of the right upper limit adjusting means 17e is rotated, a new right upper limit reference value B2 ′ is set by the right upper limit correction unit 19b (new right upper limit reference value B2 ′ = default) Right upper reference value B2 + right upper limit correction value C5). In the case of this example, as in the previous example, even when there is an attachment error of the angle detection means 16, accurate drive motor 4 drive control based on the rotation position of the arm 2 by a simple operation such as rotating the knob 25. Is particularly advantageous when there is a difference in the performance of the left and right angle detection means 16. That is, according to the configuration of this example, the right and left angle detection means 16 are not restricted to use the same performance, and can be widely applied to various garage doors.

It is a control block diagram which shows the relationship between the control part in the garage door of the example of embodiment of this invention, and a reference value adjustment means. (A) (b) is explanatory drawing explaining operation | movement of a garage door. (A) is a side view of the vicinity of the door body, (b) is a top view of (a), and (c) is a side sectional view of the vicinity of the column. It is a perspective view of a transmission mechanism. It is a partial see-through | perspective side view of a transmission mechanism. It is a control block diagram of the whole garage door. It is a graph explaining the relationship between the output value of an angle detection means, and a reference value. It is a graph explaining the relationship between the output value of an angle detection means, and a reference value when a reference value is adjusted by the reference value adjusting means. It is a control block diagram which shows the relationship between the control part of another example of embodiment of this invention, and a reference value adjustment means. It is a control block diagram of the principal part of a garage door same as the above. It is a partially cutaway perspective view of a conventional garage door.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door body 2 Arm 3 Support | pillar 4 Drive motor 16 Angle detection means 17 Reference value adjustment means 25 Knob

Claims (2)

  A column is erected beside the doorway of the garage, the base end of the arm whose tip is connected to the door body is rotatably attached to the column, and the column is equipped with a drive motor that drives the arm to rotate up and down. An angle that detects the angle of the rotating arm in a garage door that closes the door by positioning the door in a vertical state and opens the door by positioning the door in a substantially horizontal state above the door. A control unit that monitors the output values of the detection means and the angle detection means and compares the reference values indicating the upper limit position and the lower limit position of the arm to detect the upper limit position and the lower limit position and to control the drive motor. And a garage door comprising reference value adjusting means for adjusting the reference value.   Each strut is erected on both sides of the doorway of the garage, the base end of each arm connected to the width end of the door body is pivotally supported on each strut, and each arm is driven independently. The garage door according to claim 1, further comprising an angle detection unit and a reference value adjustment unit corresponding to each arm.

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