1. Field of Invention
The present invention relates to a closure measuring system, and more particularly, to a closure measuring system for measuring the tolerances and efforts for closing a movable member of an automotive vehicle.
2. Background of Invention
Automotive vehicles are equipped with numerous movable components. Such movable components are design with particular tolerances and desired efforts for function and fit. For example, a door of an automotive vehicle is typically pivotally coupled to the body of the vehicle for pivotal movement between an open position providing access through a door opening in the vehicle and a closed position closing the door opening. The door is designed to meet certain predetermined efforts or forces required by the operator to pivot the door between the open and closed positions. Additionally, the door is designed to meet certain predetermined tolerances or alignment requirements with the body of the vehicle when in the closed position.
Traditionally, these efforts and tolerance have been manually measured by the designer, engineer or manufacturer without the aid and benefit of a computerized feedback type system for providing fast and accurate measurements.
Therefore, it is desirable to provide a closure measuring system for automatically measuring the efforts, tolerances and other desired design specifications of the movable member of the vehicle.
The present invention includes a closure measuring system for measuring operable specifications of a movable member of an automotive vehicle. The closure measuring system includes a data sensing device adapted to be removably attached to the movable member on the vehicle for sensing and measuring at least one of a plurality of operable specifications of the movable member, a control panel for calculating and displaying the sensed and measured operable specifications from the data sensing device and comparing the sensed and measured operable specifications to predetermined design specifications of the member, and a data acquisition chassis coupled between the data sensing device and the control panel for storing and transmitting the operable specifications between the data sensing device and the control panel.
Advantages of the present invention will be readily appreciated as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings wherein:
Referring to
The closure measuring system 10 includes a data sensing device 26 removably attachable to the movable member, or door panel 18, by an attachment member for sensing and measuring at least one of a plurality of operable specifications of the door panel 18. The attachment member removably attaches the data sensing device to the door panel at a predetermined position, immediately adjacent the rim portion 24 of the door panel 18, and maintains the positions while the door panel 18 is moved through a predetermined range of movement, i.e. the open and closed positions. The data sensing device 26 in the preferred embodiment shown in
The operable specifications sensed and measured by the data sensing device 26 include the door closing velocity, the door closed flushness, the door latched position, and the energy or force required to close the door. Specifically, the data sensing device 26 acquires the door velocity throughout full door swing between the open and closed positions, the force input required to swing or pivot the door panel 18 and the door closed position (or flushness). Referring to
The data sensing device 26 further includes displacement device such as a laser displacement sensor 32 positioned adjacent the door opening rim portion 22 for sensing, measuring, and generating signals indicative of the distance travelled by the door 18 and the door closed flushness between the door panel 18 and the door opening 16. That is, as the door panel 18 is pivoted between the open and closed positions, the laser displacement sensor 32 senses and measures the distance between the rim portion 24 of the door panel 18 and the rim portion 22 of the door opening 16.
Referring again to
The closure measuring system 10 further includes a data acquisition chassis 36 coupled between the data sensing device 26 and the control panel 34 for storing and transmitting the operable specifications between the data sensing device 26 and the control panel 34. The data acquisition chassis 36 is electrically coupled to the data sensing device 26 by an input line 38 and then electrically coupled to the control panel 34 by an output line 40.
In operation, the control panel 34 is preprogrammed with software to include the predetermined design specification of the movable member, or door panel 18. The design specifications may include door closed flushness, velocity, and energy required to move the door panel 18. The data sensing device 26 is attached to the door panel 18 by the vacuum cups 28 adjacent the rim portion 24 of the door panel 18 such that the laser displacement sensor 32 is aligned with and adjacent the rim portion 22 of the door opening 16 formed by the body portion 14. The data acquisition chassis 36 is electrically connected between the data sensing device 26 and the control panel 34 by the input 38 and output 40 lines and the system 10 in powered on. As the door panel 18 is pivoted about the hinge mechanism 20 between the open and closed position, the data sensing device 26 senses and measures the operable specification including the velocity of the door panel 18, the energy or force require to pivot the door panel 18 and the door closed flushness between the rim portion 24 of the door panel 18 and the rim portion 22 of the door opening 16. These operable specifications are transmitted to the data acquisition chassis 36 and control panel 34 by way of electrical signals for display as well as for comparison with the predetermined design specifications. If the operable and measured specifications are within a predetermined plus/minus range of the design specifications, a pass indicator is displayed on the control panel 34. If not, a fail indicator is displayed and the door panel 18 must be adjusted until within acceptable specifications.
The invention has been described in an illustrative manner, and it is to be understood that the terminology, which has been used, is intended to be in the nature of words of description rather than of limitation.
Many modifications and variations of the present invention are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims, the invention may be practised other than as specifically described.
This application claims the benefit of the Provisional Application No. 60/239,554 filed Oct. 10, 2000.
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/US01/42652 | 10/10/2001 | WO | 00 | 9/17/2003 |
Publishing Document | Publishing Date | Country | Kind |
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WO02/31435 | 4/18/2002 | WO | A |
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Number | Date | Country | |
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20040054496 A1 | Mar 2004 | US |
Number | Date | Country | |
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60239554 | Oct 2000 | US |