GB2378983A - Motorised shutter door with mechanically isolated motor - Google Patents

Motorised shutter door with mechanically isolated motor Download PDF

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Publication number
GB2378983A
GB2378983A GB0217944A GB0217944A GB2378983A GB 2378983 A GB2378983 A GB 2378983A GB 0217944 A GB0217944 A GB 0217944A GB 0217944 A GB0217944 A GB 0217944A GB 2378983 A GB2378983 A GB 2378983A
Authority
GB
United Kingdom
Prior art keywords
door
drive mechanism
motorised
arrangement
control means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB0217944A
Other versions
GB2378983B (en
GB0217944D0 (en
Inventor
John Christopher Rees
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMARTA SYSTEMS Ltd
Original Assignee
SMARTA SYSTEMS Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB0118965A external-priority patent/GB0118965D0/en
Application filed by SMARTA SYSTEMS Ltd filed Critical SMARTA SYSTEMS Ltd
Publication of GB0217944D0 publication Critical patent/GB0217944D0/en
Publication of GB2378983A publication Critical patent/GB2378983A/en
Application granted granted Critical
Publication of GB2378983B publication Critical patent/GB2378983B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/665—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/146—Shutters

Landscapes

  • Power-Operated Mechanisms For Wings (AREA)

Abstract

A motorised shutter door arrangement for a vehicle has a shutter door (2), a motorised drive mechanism (4,6) and control means (8) arranged to operate the drive mechanism (4,6) to raise and lower the door (2). This enables at least the motor (4) of the drive mechanism to be mechanically isolated from the door (2) when the door is in a closed position. This ensures no damage to the drive mechanism (4,6) will result from movement of the door whilst the vehicle is in transit. Also disclosed is a motorised shutter door with a catch for locking the door in a closed position. Also disclosed is a motorised door arrangement having control means in order to maintain a log of open and closing operations of the door. Also disclosed is a motorised door arrangement having control means in order to determine and memorize a specific position of the door. Also disclosed is a motorised door arrangement having control means to maintain the door in a fully or partial opened state.

Description

<Desc/Clms Page number 1>
Motorised Shutter Door Arrangement The present invention relates to a motorised shutter door arrangement and, more particularly to a motorised shutter door arrangement for a vehicle.
It is known to provide a commercial vehicle with a shutter door which may be opened to gain access to an interior storage space of the vehicle, and closed for transit, by respectively raising and lowering the door.
Whilst it is clearly inconvenient for such doors to be raised and lowered by hand, motorised drive mechanisms are rarely to be found on commercial vehicles, as the inevitable door motion whilst a vehicle is in transit has been found to cause serious damage to all but the most robust of drive mechanisms.
We have now devised an arrangement which overcomes the limitations of existing shutter door arrangements.
In accordance with the present invention, there is provided a motorised shutter door arrangement for a vehicle, the arrangement comprising a shutter door, a motorised drive mechanism and control means arranged to operate the drive mechanism to raise and lower the door such that at least the motor of the drive mechanism is mechanically isolated from the door when the door is in a closed position.
Thus, no damage to the drive mechanism will result from movement of the door whilst the vehicle is in transit.
Preferably, the drive mechanism engages the door via a coupling which is arranged to provide a degree of hysteresis between the motion of the drive mechanism and that of the door.
For example, a portion of the door may extend between upper and lower, spaced-apart coupling portions of the drive mechanism. Thus, once the door has been fully lowered, by driving the upper coupling portion of the drive mechanism downwards against the coupling portion of the door, the drive mechanism may be reversed slightly, to separate the upper coupling portion of the drive mechanism from the coupling
<Desc/Clms Page number 2>
portion of the door.
It will be appreciated that with the upper coupling portion of the drive mechanism thus separated from the coupling portion of the door, the drive mechanism will be isolated from any slight upwards motion of the door, whilst the vehicle is in transit.
The door may subsequently be raised by driving the lower coupling portion upwards against the coupling portion of the door.
Conversely, a portion of the drive mechanism may extend between upper and lower, spaced-apart portions of the door.
Preferably the arrangement comprises a catch for locking the door in a closed position, the control means being arranged to operate the drive mechanism to ensure that the door is fully lowered before raising the door, in case the door may have lifted in transit, thereby jamming the catch in its deployed position.
Preferably the catch is automatically deployed when the door is in a closed position and retracted immediately prior to the door being raised.
Preferably the control means are arranged to be remotely operated, preferably via an infra-red or radio frequency operating signal transmitted from a hand-held controller.
The control means may be arranged to operate the drive mechanism only whilst a signal is maintained from a control device, e. g. a push button, operated by an operator. Alternatively, the control means may be arranged to respond to a substantially instantaneous signal from a control device operated by an operator, to operate the drive mechanism to fully open or fully close the door. In either case, the control means are preferably arranged to respond to an override signal from a device operated by an operator or from safety sensing means to arrest or reverse the motion of the drive mechanism.
Preferably the control means comprise anti-entrapment
<Desc/Clms Page number 3>
means, preferably in the form of an elongate capacitive proximity sensor extending along the distal edge of the door, for arresting or reversing the motion of the door where closure of the door is obstructed.
Preferably the control means are arranged to log operations of the door. Preferably the control means comprise a clock or timer and are arranged to record the times at which the door is opened and closed and/or the duration of time during which the door is left open. The logged data is then available for analysis, for example for health and safety purposes or to detect tampering.
Preferably the control means are arranged to determine the position of the door from the output of position sensing means fitted to the drive mechanism. In this case, the control means are preferably arranged to memorise at least one position into which the door is set by an operator, so that the control means may subsequently operate the drive mechanism to return the door to that position. An operator installing the arrangement may thus program the control means with upper and/or lower limits for the position of the door, between which the door will be raised and lowered in use.
Also in accordance with the present invention, there is provided a motorised shutter door arrangement for a vehicle, the arrangement comprising a shutter door, a catch for locking the door in a closed position, a motorised drive mechanism and control means arranged to operate the drive mechanism to ensure that the door is fully closed before opening the door.
Further in accordance with the present invention, there is provided a motorised door arrangement, the arrangement comprising a door, a motorised drive mechanism and control means arranged to operate the drive mechanism to open and close the door and to maintain a log of said operations.
Preferably the control means comprise a clock or timer and are arranged to record the times at which the door is opened and closed and/or the duration of time during which the
<Desc/Clms Page number 4>
door is open.
Still further in accordance with the present invention, there is provided a motorised door arrangement, the arrangement comprising a door, a motorised drive mechanism and control means arranged to operate the drive mechanism to open and close the door, to determine the position of the door from the output of position sensing means fitted to the drive mechanism and to memorise at least one position into which the door is set by an operator, so that the control means may subsequently operate the drive mechanism to return the door to that position.
In each of the above embodiments, and particularly where the shutter door comprises a roller shutter, the control means are preferably further arranged, where the door is to be maintained in a fully or partially opened state, to periodically operate the drive mechanism to re-open the door to the extent to which the door might have lowered under its own weight over a period of time.
For example, the control means may be arranged to operate the drive mechanism at regular intervals or in response the output of position sensing means indicative of a predetermined degree of lowering.
Yet further in accordance with the present invention, there is provided a motorised door arrangement, the arrangement comprising a door, a motorised drive mechanism and control means arranged to operate the drive mechanism to open and close the door and, where the door is to be maintained in a fully or partially opened state, to periodically re-open the door to the extent to which the door might have lowered under its own weight over a period of time.
An embodiment of the present invention will now be described by way of an example only and with reference to the accompanying drawing, which is a schematic illustration of a motorised shutter door arrangement comprising a shutter door 2 for fitting to a commercial vehicle and a drive mechanism comprising a motor 4 and an extensible, axially-incompressible
<Desc/Clms Page number 5>
linkage 6 via which the motor 4 may raise and lower the door 2, in accordance with control signals supplied to the motor 4 by a control unit 8.
The distal end of the linkage 6 is loosely coupled to a projection 10 on the rear of the door 2 by a ring 12, the control unit 8 being arranged to operate the motor 4 such that, when the door 2 is fully closed, the horizontally-extending, upper portion 14 of the ring 12 is separated from the projection 10, thereby isolating any slight upwards movement (that the door 2 might experience in transit) from the drive mechanism, and in particular from the motor 4, which might otherwise be damaged.
The apparatus may be arranged such that the raised door 2 is continually suspended, under the action of gravity, from the horizontally-extending, lower portion 16 of the ring 12, in which case, downwards motion of the linkage 6 may cease upon closure of the door 2.
Alternatively, the apparatus may be arranged such that the door 2 is self-supporting when raised, so that the horizontally-extending, upper portion 14 of the ring 12 must be driven downwards against the projection 10 on the rear of the door 2 to close the door. In this case, the ring 12 must be raised slightly, upon closure of the door 2, to provide the required isolation effect.
The apparatus further comprises a catch 18 which automatically engages a portion 20 of the door 2 in its closed position, and is disengaged from the door 2 when the door is to be raised.
To prevent the catch 18 from jamming in its deployed position, as a result of the door 2 having raised slightly in transit, the control unit 8 is arranged to operate the motor 4 to automatically drive the upper portion 14 of the ring 12 downwards against the projection 10 on the rear of the door 2, to fully close the door (and thereby release the catch 18 if it has jammed in place) prior to reversing the direction of the
<Desc/Clms Page number 6>
motor 4 to raise the door 2.
The control unit 8 is arranged to respond to a substantially instantaneous signal received from a control device (not shown), e. g. a push-button mounted to the vehicle or incorporated into a remote hand-held operating unit, to either fully raise or fully lower the door 2, as required.
However, for safety reasons or to provide varying degrees of opening, it would remain in accordance with the present invention for the control unit 8 to also or otherwise operate the motor 4, only whilst a signal is maintained from the control device e. g. only whilst a push-button continues to be pressed by an operator.
In either case, the entrapment of an object, e. g. a person's hand, is prevented by an elongate sensing strip 22 fitted along the distal edge of the door 2 which provides the control unit 8 with an output signal for arresting or reversing the closing motion of the door 2, in the event that closure of the door is obstructed.
Whilst the sensing strip 22 may comprise a pair of opposed, elongate conductors arranged to complete an electrical circuit when the strip is compressed (i. e. by coming into contact with an obstruction), or a elongate tube connected to pneumatic sensor for detecting any rise in pressure in the tube as it is compressed, the sensing strip 22 is preferably used to sense the proximity of an obstruction, and most preferably comprises at least one elongate conductor whose output is connected to a circuit for sensing a change in the capacitance of the conductor (s) (i. e. the capacity of the conductor (s) to store a charge) resulting from the proximity thereto of an obstruction.
In this preferred arrangement, the sensing circuit is preferably arranged to transfer a charge from the conductor (s) to a sampling capacitor of known capacitance, the resulting voltage on the sampling capacitor being used to determine the capacitance of the conductor (s) using the known relationship
<Desc/Clms Page number 7>
that- Cx = Cs. Vs/Vr Where Cx is the unknown capacitance of the sensing strip, Cs is the known capacitance of the sampling capacitor, Vs is a fixed voltage to which the conductor (s) are charged and Vr is the measured voltage transferred to the sampling capacitor.
A further or alternative safety feature may be provided by a manual override device (not shown) fitted to the body of the vehicle, the operation of which, whilst the door is in motion, will instantaneously arrest or reverse that motion, preferably independently of the control unit 8.
The control unit 8 is also arranged to maintain a log of the operations of the door 2, to provide a record, e. g. for security purposes, of when and for how long the door was opened.
To configure the apparatus for use with a particular vehicle, the apparatus is first fitted to the vehicle and then controlled by an operator to set the door 2 in at least one position. The operator then stores the output of position sensing means fitted to the drive mechanism, in a memory of the control unit 8, such that the door 2 may subsequently be operated by the control unit 8 to return to that position, for example within a pre-determined sequence of operations.
The control unit is further arranged, where the door is to be maintained in a fully or partially opened state, to periodically operate the drive mechanism to re-open the door to the extent to which the door might have lowered under its own weight over a period of time, according to the output of the position sensing device fitted to the drive mechanism.
The apparatus thus described provides a resilient, versatile and safe closure means for an opening in the body of a commercial vehicle.

Claims (23)

  1. Claims 1) A motorised shutter door arrangement for a vehicle, the arrangement comprising a shutter door, a motorised drive mechanism and control means arranged to operate the drive mechanism to raise and lower the door such that at least the motor of the drive mechanism is mechanically isolated from the door when the door is in a closed position.
  2. 2) A motorised shutter door arrangement as claimed in Claim 1, wherein the drive mechanism engages the door via a coupling which is arranged to provide a degree of hysteresis between the motion of the drive mechanism and that of the door.
  3. 3) A motorised shutter door arrangement as claimed in Claim 2, wherein a portion of the door extends between upper and lower, spaced-apart portions of the drive mechanism, the drive mechanism being isolated from the door by separating at least said upper coupling portion of the drive mechanism from said extending portion of the door.
  4. 4) A motorised shutter door arrangement as claimed in Claim 2, wherein a portion of the drive mechanism extends between upper and lower, spaced-apart portions of the door, the drive mechanism being isolated from the door by separating at least said lower portion of the door from said extending portion of the drive mechanism.
  5. 5) A motorised shutter door arrangement as claimed in any preceding claim, further comprising a catch for locking the door in a closed position, the control means being arranged to operate the drive mechanism to ensure that the door is fully lowered before raising the door.
  6. 6) A motorised shutter door arrangement as claimed in
    <Desc/Clms Page number 9>
    Claim 5, wherein the catch is automatically deployed when the door is in a closed position and retracted immediately prior to the door being raised.
  7. 7) A motorised shutter door arrangement as claimed in any preceding claim, wherein the control means are arranged to be remotely operated.
  8. 8) A motorised shutter door arrangement as claimed in any preceding claim, wherein the control means are arranged to operate the drive mechanism only whilst a signal is maintained from a control device.
  9. 9) A motorised shutter door arrangement as claimed in any of Claims 1 to 7, wherein the control means are arranged to respond to a substantially instantaneous signal from a control device operated by an operator, to operate the drive mechanism to fully open or fully close the door.
  10. 10) A motorised shutter door arrangement as claimed in Claim 8 or Claim 9, arranged to respond to an override signal from a device operated by an operator to arrest or reverse the motion of the drive mechanism.
  11. 11) A motorised shutter door arrangement as claimed in Claim 8 or Claim 9, arranged to respond to an override signal from safety sensing means to arrest or reverse the motion of the drive mechanism.
  12. 12) A motorised shutter door arrangement as claimed in any preceding claim, wherein the control means comprise antientrapment means.
  13. 13) A motorised shutter door arrangement as claimed in Claim 12, wherein the anti-entrapment means comprise an
    <Desc/Clms Page number 10>
    elongate capacitive proximity sensor extending along the distal edge of the door, for arresting or reversing the motion of the door where closure of the door is obstructed.
  14. 14) A motorised shutter door arrangement as claimed in any preceding claim, wherein the control means are arranged to log operations of the door.
  15. 15) A motorised shutter door arrangement as claimed in Claim 14, wherein the control means comprise a clock or timer and are arranged to record the times at which the door is opened and closed and/or the duration of time during which the door is left open.
  16. 16) A motorised shutter door arrangement as claimed in any preceding claim, wherein the control means are arranged to determine the position of the door from the output of position sensing means fitted to the drive mechanism.
  17. 17) A motorised shutter door arrangement as claimed in any Claim 16, wherein the control means are arranged to memorise at least one position into which the door is set by an operator, so that the control means may subsequently operate the drive mechanism to return the door to that position.
  18. 18) A motorised shutter door arrangement for a vehicle, the arrangement comprising a shutter door, a catch for locking the door in a closed position, a motorised drive mechanism and control means arranged to operate the drive mechanism to ensure that the door is fully closed before opening the door.
  19. 19) A motorised door arrangement, the arrangement comprising a door, a motorised drive mechanism and control means arranged to operate the drive mechanism to open and close the door and to maintain a log of said operations.
    <Desc/Clms Page number 11>
  20. 20) A motorised door arrangement as claimed in Claim 19, wherein the control means comprise a clock or timer and are arranged to record the times at which the door is opened and closed and/or the duration of time during which the door is open.
  21. 21) A motorised door arrangement comprising a door, a motorised drive mechanism and control means arranged to operate the drive mechanism to open and close the door, to determine the position of the door from the output of position sensing means fitted to the drive mechanism and to memorise at least one position into which the door is set by an operator, so that the control means may subsequently operate the drive mechanism to return the door to that position.
  22. 22) A motorised door arrangement comprising a door, a motorised drive mechanism and control means arranged to operate the drive mechanism to open and close the door and, where the door is to be maintained in a fully or partially opened state, to periodically re-open the door to the extent to which the door might have lowered under its own weight over a period of time.
  23. 23) A motorised door arrangement substantially as herein described with reference to the drawing.
GB0217944A 2001-08-02 2002-08-01 Motorised shutter door arrangement Expired - Fee Related GB2378983B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0118965A GB0118965D0 (en) 2001-08-02 2001-08-02 Motorised shutter door arrangement
GB0128056A GB0128056D0 (en) 2001-08-02 2001-11-22 Motorised shutter door arrangement

Publications (3)

Publication Number Publication Date
GB0217944D0 GB0217944D0 (en) 2002-09-11
GB2378983A true GB2378983A (en) 2003-02-26
GB2378983B GB2378983B (en) 2005-05-25

Family

ID=26246401

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0217944A Expired - Fee Related GB2378983B (en) 2001-08-02 2002-08-01 Motorised shutter door arrangement

Country Status (1)

Country Link
GB (1) GB2378983B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4784427A (en) * 1987-02-26 1988-11-15 Burgess Guy A Enclosure assembly for open bed vehicle
US5698073A (en) * 1996-06-20 1997-12-16 Hydromach Inc. Automatic sectional door opener
WO1998032943A1 (en) * 1997-01-28 1998-07-30 Shane Anthony Quig Retractible closure apparatus
GB2343919A (en) * 1998-11-18 2000-05-24 Sanwa Shutter Corp Building shutter : drive : detecting obstruction
US6145570A (en) * 1998-10-12 2000-11-14 Wayne-Dalton Corp. Locking system for sectional doors

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4784427A (en) * 1987-02-26 1988-11-15 Burgess Guy A Enclosure assembly for open bed vehicle
US5698073A (en) * 1996-06-20 1997-12-16 Hydromach Inc. Automatic sectional door opener
WO1998032943A1 (en) * 1997-01-28 1998-07-30 Shane Anthony Quig Retractible closure apparatus
US6145570A (en) * 1998-10-12 2000-11-14 Wayne-Dalton Corp. Locking system for sectional doors
GB2343919A (en) * 1998-11-18 2000-05-24 Sanwa Shutter Corp Building shutter : drive : detecting obstruction

Also Published As

Publication number Publication date
GB2378983B (en) 2005-05-25
GB0217944D0 (en) 2002-09-11

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Effective date: 20180801