The present disclosure generally relates to a door and a door operator, and more particularly to a door operator configured to close the door in a controlled manner.
Door operators are configured to move a door from an open position to a closed position under control of a spring mechanism, a motor, a valve, or other actuators. When closing the door, in particular, the door operator is configured to control the speed at which the door is closed to ensure that the door doesn't close too slowly or too quickly. The door operator typically includes features, such as potentiometer presets, which are set to a predetermined location before or during installation to ensure that the door operates within an effective operating range. Door operators are also known as door closers.
Certain manufacturers of door hardware follow certain agreed to standards which specify that a door's kinetic energy should be maintained within a predetermined operating range. Currently the manufacturers or installers or door closers use a lookup table in order to determine the specified operating region of the door and the door closer, and then manually set the required presets of the door closer parameters. To set the operating characteristics of the door closer, certain door features, which include the weight of the door and other dimensions, must be known. These characteristics of the door, however, are not easily determined at the point of installation or once a door has been installed. Consequently, adjustment of the door closer at the point of installation can be problematic. There is a need, therefore, for ensuring the door closer has been properly calibrated at the point of installation, without knowing the door characteristics prior to installation of the door and the door closer.
As described herein, a method for adjusting the closing force of a door coupled to a door closer assembly having a bias element includes determining the kinetic energy of the door without using the weight or dimensions of the door, such as height and width. The determined kinetic energy is used to adjust the closing force of an electro-mechanical door actuator that includes a spring and a motor. The door includes the use of one, some of or all of an accelerometer, an angular position sensor, a time to close, a braking torque, and a controller to identify values of acceleration, velocity, and/or position of the door. The identified values are provided to the controller which is configured to calculate the kinetic energy of the door. The calculated kinetic energy is used to determine the closing velocity of the door closure to ensure proper operation of the door at the point of installation.
In one embodiment, there is provided, a method for adjusting the closing force of a door coupled to a door closer assembly having a bias element. The method includes: placing the door in a first position, initiating movement of the door from the first position to a second position; measuring movement of the door from the first position to the second position; determining a mass moment a inertia of the door as a function of the measured movement; determining the kinetic energy of the door as function of the mass moment of inertia; and modifying an operating characteristic of the door closer assembly as a function of the determined kinetic energy to adjust the closing force of the door closer assembly.
In another embodiment, there is provided a method for adjusting the closing force of a door coupled to a door closer assembly having a bias element and a controller configured to control movement of the door from an open position to a closed position. The method includes: placing the door in an open position; initiating movement of the door from the open position to the closed position; determining at least one of a plurality of operating characteristics with the controller during movement of the door including: (i) an acceleration of the door, (ii) a torque value; (iii) an angular position of the door, and (iv) a period of time for the door to move from a first position to a second position; and determining a mass moment of inertia of the door using the determined one of the plurality of operating characteristics.
For the purposes of promoting an understanding of the principles of the invention, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended. Any alterations and further modifications in the described embodiments, and any further applications of the principles of the invention as described herein are contemplated as would normally occur to one skilled in the art which the invention relates.
As illustrated in
The arm assembly 120 generally includes a first arm 122, a second arm 124, and a bracket 126. A first end of the first arm 122 includes a hub 121 which is coupled to the pinion 112, and a second end of the first arm pivotally connected to the second arm 124. For example, the end of the pinion 112 may have a non-circular cross-section, and the hub 121 may have an opening 123 configured to mate with the end of the pinion 112. The second arm 124 is pivotally connected to the first arm 122 by a first pivot joint 125, and is pivotally connected to the bracket 126 by a second pivot joint 127. While the illustrated arm assembly 120 is configured as a scissors-type arm assembly, it is also contemplated that the arm assembly 120 may include a single arm. For example, the second end of the first arm 122 may be slid into a track mounted on the door 74 or the door frame 72.
As seen in
As seen in
Interaction of the sensor 130 with target 103 is a function of the distance, size and composition of the target 103. Thus, changes in the distance, position and/or orientation of the target 103 with respect to inductive coil sensor will cause a variation in the sensed positron of the target 103 with respect to the sensor 130. The sensor 130 is configured to generate an output signal corresponding to one or more of the variable characteristics affected by interaction between the sensor 130 and the target 103. In other embodiments, the sensor 130 is a mechanical sensor and the target 103 engages the sensor 130 at a mechanical interface between the sensor and the target. In one embodiment, the sensor 130 provides a signal to the controller 140 which determines from the signal an angular position of the door 74 with respect to the frame 72.
The controller 140 is in communication with the sensor 130, and may further be in communication with an actuation mechanism 150. As illustrated, the controller 140 includes a processor 140′, a sensor unit 141, an accelerometer unit 142, a determining unit 143, and a memory 146. As described in further detail below, the sensor trait 141 is configured to activate the sensor 130 and to receive data from the sensor 130. The accelerometer unit 142 is configured to receive data from the accelerometer 78. The determining trait 143 is configured to determine an angular position of the door using information received from the sensor 130 or an acceleration value of the door using information received from the accelerometer 78.
The memory 146 is a non-transitory computer readable medium having data stored thereon, and is in communication with the processor 140′. The data stored on the memory 146 may include, for example one or more sets of instructions 147, one or more look-up tables 148 and/or additional data 149. The instructions 147 may be executed by the processor 140′ to cause the processor 140′ to perform one or more functions such as, for example, the functions associated with one or more of the described units. While the illustrated controller 140 is housed within the body 110, it is also contemplated that the controller 140 may be positioned elsewhere on the operator 100 or externally to the operator 100.
The processor 140′, in different embodiments, is a programmable type, a dedicated, hardwired state machine, or a combination of these, and can further include multiple processors, Arithmetic-Logic Units (ALUS), Central Processing Units (CPUs), Digital Signal Processors (DSPs) or the like. Other forms of processor 140′ include multiple processing units, distributed, pipelined, and/or parallel processing. The processor 140 may be dedicated to performance of the operations described herein or may be utilized in one or more additional applications. In the depicted form, the processor 140′ is of a programmable variety that executes algorithms and processes data in accordance with defined by programmed instructions (such as software or firmware) stored in memory 146. Alternatively or additionally, the operating logic for processor 140′ is at least partially defined by hardwired logic or other hardware. The processor 140′, in different embodiments, is comprised of one or more components of any type suitable to process the signals received from input/output devices, and provide desired output signals. Such components may include digital circuitry, analog circuitry, or combination of both.
The memory 146 includes one or more types, such as a solid-state variety, electromagnetic variety, optical variety, or a combination of these forms. Furthermore, the memory 146 includes, in different embodiments, volatile, nonvolatile, or a combination of these types, and a portable variety, such as a disk, tape, memory stick, cartridge, or the like. In addition, the memory 146 is configured to store data that is manipulated by the operating logic of the processor 140′, such as data representative of signals received from and/or sent to the door operator in addition to or in lieu of stored program instructions, just to name one example.
The actuation mechanism 150 is configured to regulate the rotational speed of the pinion 112, thereby regulating the angular speed of the door 74 during opening and/or closing events. The actuation mechanism 150 may alternatively be referred to as a pinion control mechanism or a speed regulating mechanism. The actuation mechanism 150 may include an actuator 152 configured to perform actions in response to commands from the controller 140. The actuator 152 may, for example, be an electromechanical actuator such as a motor, solenoid or electromechanical valve.
In certain embodiments, the actuator 152 may be a motor. For example, in one embodiment, the operator 100 is provided as a door actuator, and the motor may rotate the pinion 112 to actively urge the door 74 in the opening direction during opening events. In other embodiments, the actuation mechanism 150 may include a valve in a hydraulic damper assembly. For example, the operator 100 may be configured as a door closer which regulates the angular speed of the door 74, but does not actively urge the door 74 to the open position.
In different embodiments, the operator 100 includes a plurality of door operation devices which are adjustable to alter the operating characteristics of the operator 100, which adjusts the operation characteristics of the door in opening and closing cycles. The door operation devices include door opening and closing cycle devices, including an opening speed device, a back check speed device, a hold open time device, a delay device, a closing speed device, a latch position device, and a back check position device.
As the door 74 moves, the position, distance and/or orientation of the target 103 changes with respect to the sensor 130, thereby causing the sensor 130 to generate an output signal indicative of one or more of the variable characteristics of the sensor 130. For example, the converter 136 may generate a digital output signal having a value corresponding to an angle of the door 74 with respect to the frame 72.
In order to determine a preferred operating range of the door, particularly, in a door closing operation, one embodiment includes determining a kinetic energy of the door using the accelerometer 78. The accelerometer 78 determines the angular acceleration of the door. When used in combination with a torque value, which is determined by the controller 140, and a time to close, the mass moment of inertia (MMI) of the door is determined by dividing the torque value by the angular acceleration. The determined value of the MMI is used by the controller 140 to calculate the kinetic energy when multiplied by one-half (½) and the square of the integral of a determined angular acceleration, including a determination of angular velocity.
The controller 140 is configured to determine kinetic energy of the door using known mathematical equations. For instance, the kinetic energy, in one embodiment, is determined with the following equation:
Where:
The torque value is determined with the following equation.
τ=Iα
Where:
In the embodiments described herein additional equations are used by the controller 140 to determine angular position (θ) and angular velocity (ω) as follows:
θ=ω0t+1/2αt2
Where:
Where:
Once the door has reached the door closed position, which can be determined in one embodiment, by engagement of the door latch with the door frame, the controller 140 determines the total amount of time taken for the door to move from the open position to the closed position at block 210. Once closed, the time to close value and the accelerometer data are stored in memory 146. Upon storage of the data, the controller determines a net torque change using spring data, which includes a known default starting torque/spring force set at the factory and stored in the memory. The determined spring displacement versus the angular position of the door is determined by the controller 140 by calculating a double integral of the stored angular acceleration at block 212. As is known by those skilled in the art, by twice integrating acceleration, an angular position is determined. Consequently, in this embodiment, an angular position sensor is not required, as the accelerometer data provides the desired position information.
Using this information, the controller 140 determines a mass moment of inertia of the door using the stored value of acceleration over time and the net torque at block 214. After block 214, the controller 140 using the determined MMI, the determined angular velocity, and time to close to calculate the kinetic energy at block 216. At block 218, the controller then determines a preferred operating region of the door which is defined according to the door setup/installation requirements. The determined preferred operating region is used by the controller 140 to control closing of the door.
In one embodiment, the controller 140 uses the determined preferred operating region to, control the actuation mechanism during closing movements of the door. In other embodiments, the controller provides control device settings to the installer, who in turn manually sets the control devices to the provided settings. In another embodiment, some of the control device settings are manually set by the operator and the controller electrically controls closing of the door through the actuation mechanism 150. Once the MMI is calculated, a maximum kinetic energy for safe door operation is determined. The kinetic energy of the door can then be limited via the angular velocity of the door by motor braking, automatic hydraulic valve adjustment, or manual adjustments.
As seen in
After the net spring torque is computed and stored in memory, the door closer 100 is placed in a calibration mode by the installer at block 312. This calibration mode is activated by either a mechanical or electrical actuation of a switch, the actuation of which is recognized by the controller 140. The door is then released from the open position at block 114. As the door moves from the open position to the closed position, the controller 140 applies a constant calculated braking torque using the actuation mechanism 150 and displacement information at block 316. The applied constant braking torque dampens the closing of the door. At the same time, a time to close from the open position to the closing position is determined by the con roller 140. The determined time to close, the predetermined amount, and the position data are stored at block 318. The stored position data is used to determine an angular velocity, by a first derivative, and is used to determine an angular acceleration, by a second derivative of the port on data at block 320.
Once these values have been determined, the controller 140 determines the MMI of the door using determined angular acceleration and determined torque at block 322. The controller then determines at block 324 the kinetic energy of the door by using the determined MMI, the angular velocity, and the time to close. At block 325, the controller determines a preferred operating region of the door which is defined according to the door setup/installation requirements. Once the operating region of the door is determined, the door closer 100 is configured to meet the defined operating regions.
In an embodiment 400 of
As seen in
The door is then released from the open position at block 414. As the door moves from the open position to the closed position, the controller applies a constant calculated braking torque using the actuation mechanism 150 and displacement information as seen at block 416. The applied constant braking torque dampens the closing of the door. The controller 140 determines the time to close from the open position to the closed position at block 418. Using data provided by the accelerometer 78, the controller accelerometer stores the closing cycle acceleration data at block 420. Angular position data is derived with respect to time to obtain angular velocity data at block 422. The controller 140 then determines at block 424 the MMI of the door using acceleration data and the calculated braking torque determined at block 416.
The controller 140, at block 426, determines the kinetic energy of the door by using the determined MMI, the angular velocity, and the time to close. At block 428, the controller then determines a preferred operating region of the door which is defined according to the door setup/installation requirements. Once the operating region of the door is determined, the door closer 100 is configured to meet the defined operating regions.
As seen in
After the net spring torque is computed and saved in memory, the door closer 100 is placed in a calibration mode by the installer at block 512. This calibration mode is activated either a mechanical or electrical actuation of a switch, the actuation of which is recognized by the controller 140. The door is then released from the open position at block 514. As the door moves from the open position to the closed position, the controller 140 determines and stores the position of the door versus time at block 516. The determination provides a velocity of the door moving from the open position to the closed position.
The stored position data is used to determine an angular velocity, by a first derivative of the position data, and is used to determine an angular acceleration, by a second derivative of the position data, at block 518.
Once these values have been determined, the controller 140 determines the MMI of the door using determined angular acceleration and determined torque at block 520. The controller then determines at block 522 the kinetic energy of the door by using the determined the angular velocity, and the time to close. At block 524, the controller determines a preferred operating region of the door, which is defined according to the door setup/Installation requirements. Once the operating region of the door is determined, the door closer 100 is configured to meet the defined operating regions.
While the invention has been illustrated and described in detail in the drawings and foregoing description, the same is to be considered as illustrative and not restrictive in character, it being understood that only the preferred embodiments have been shown and described and that all changes and modifications that come within the spirit of the inventions are desired to be protected.
It should be understood that while the use of words such as preferable, preferably, preferred or more preferred utilized in the description above indicate that the feature so described may be more desirable, it nonetheless may not be necessary and embodiments lacking the same may be contemplated as within the scope of the invention, the scope being defined by the claims that follow. In reading the claims, intended that when words such as “a,” “an,” “at least one,” or “a least one portion” are used there is no intention to limit the claim to only one item unless specifically stated to the contrary in the claim. When the language “at least a portion” and/or “a portion” is used the item can include a portion and/o, the entire item unless specifically stated to the contrary,
The present application is a continuation of U.S. patent application Ser. No. 15/155,167 filed May 16, 2016 and issued as U.S. Pat. No. 10,208,520, the contents of which are hereby incorporated by reference in their entirety.
Number | Name | Date | Kind |
---|---|---|---|
5036620 | Beran et al. | Aug 1991 | A |
5274312 | Gerstenkorn | Dec 1993 | A |
5687507 | Beran | Nov 1997 | A |
5770934 | Theile | Jun 1998 | A |
6063274 | Rivera | May 2000 | A |
7971316 | Copeland, II et al. | Jul 2011 | B2 |
8169169 | Hass et al. | May 2012 | B2 |
8415902 | Burris et al. | Apr 2013 | B2 |
8527101 | Burris et al. | Sep 2013 | B2 |
8547046 | Burris et al. | Oct 2013 | B2 |
8564235 | Burris et al. | Oct 2013 | B2 |
8773237 | Burris et al. | Jul 2014 | B2 |
10876346 | Hucker | Dec 2020 | B2 |
20090007489 | Kern et al. | Jan 2009 | A1 |
20090265992 | Hass et al. | Oct 2009 | A1 |
20100071264 | Faulkner | Mar 2010 | A1 |
20110257796 | Burris et al. | Oct 2011 | A1 |
20120180261 | Zimmer et al. | Jul 2012 | A1 |
20130276748 | Kromer et al. | Oct 2013 | A1 |
20130340343 | Dye et al. | Dec 2013 | A1 |
20140325911 | Hass | Nov 2014 | A1 |
20150059249 | Yulkowski | Mar 2015 | A1 |
20170226788 | Conner et al. | Aug 2017 | A1 |
Number | Date | Country |
---|---|---|
102007062473 | Jul 2009 | DE |
1020154200284 | Oct 2015 | DE |
Entry |
---|
International Search Report; International Searching Authority; International Patent Application No. PCT/US2017/032612; dated Aug. 4, 2017; 2 pages. |
Written Opinion; International Searching Authority; International Patent Application No. PCT/US2017/032612; dated Aug. 4, 2017; 6 pages. |
Number | Date | Country | |
---|---|---|---|
20190316401 A1 | Oct 2019 | US |
Number | Date | Country | |
---|---|---|---|
Parent | 15155167 | May 2016 | US |
Child | 16279663 | US |