GB2097855A - Actuator device for opening a sliding door - Google Patents

Actuator device for opening a sliding door Download PDF

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Publication number
GB2097855A
GB2097855A GB8113596A GB8113596A GB2097855A GB 2097855 A GB2097855 A GB 2097855A GB 8113596 A GB8113596 A GB 8113596A GB 8113596 A GB8113596 A GB 8113596A GB 2097855 A GB2097855 A GB 2097855A
Authority
GB
United Kingdom
Prior art keywords
driveshaft
plates
sliding door
opening
pin
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
GB8113596A
Other versions
GB2097855B (en
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.)
FAAC SpA
Original Assignee
FAAC SpA
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
Application filed by FAAC SpA filed Critical FAAC SpA
Priority to GB8113596A priority Critical patent/GB2097855B/en
Publication of GB2097855A publication Critical patent/GB2097855A/en
Application granted granted Critical
Publication of GB2097855B publication Critical patent/GB2097855B/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/108—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction clutches
    • 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
    • E05F15/632—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings
    • E05F15/635—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings operated by push-pull mechanisms, e.g. flexible or rigid rack-and-pinion arrangements
    • 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
    • E05F15/40—Safety devices, e.g. detection of obstructions or end positions
    • E05F15/41—Detection by monitoring transmitted force or torque; Safety couplings with activation dependent upon torque or force, e.g. slip couplings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/20—Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore
    • E05Y2201/214—Disengaging means
    • E05Y2201/216—Clutches
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/20—Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore
    • E05Y2201/23—Actuation thereof
    • E05Y2201/244—Actuation thereof by manual operation
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/60—Suspension or transmission members; Accessories therefore
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/71—Toothed gearing
    • E05Y2201/722—Racks
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/40—Protection
    • E05Y2800/424—Protection against unintended use
    • E05Y2800/426—Protection against unintended use against unauthorised use
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • 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—Application of doors, windows, wings or fittings thereof for buildings or parts thereof characterised by the type of wing
    • E05Y2900/132—Doors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/40—Application of doors, windows, wings or fittings thereof for gates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
    • F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
    • F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel

Abstract

An actuator device is disclosed for opening a sliding door comprises a casing or box (7) in which a driven shaft (23) (Fig. 2, not shown) is rotatably carried, wherewith are in rigid rotatory relationship a pinion gear (8) meshing with a rack mounted on the sliding door and a helical gear wheel (1) meshing with a worm screw (2) keyed to a driveshaft (3) driven by an electric motor (4) housed in the casing and including a rotor (9) carried on the driveshaft (3) and arranged between a pair of plates (13, 14) one (13) whereof is rigid with the driveshaft (3) and the other whereof is rotatively coupled to but axially movable with respect to the driveshaft (3) by means of a torque limiter 20. <IMAGE>

Description

SPECIFICATION Actuator device for opening a sliding door This invention relates to an actuator device for opening a sliding door.
Known are horizontally sliding doors and gates the actuation whereof is controlled through an actuator device which comprises a worm and gear drive operative to transmit the motion from an electric motor to a pinion gear in constant mesh relationship with a rack attached to the door, thus causing the latter to move accordingly.
The problems encountered with such actuator devices include the provision of a safety system capable of stopping the door closing movement should a person get caught in it, and of manual door opening features in the event of the electric motor becoming inoperative owing to failure or electric power outage.
The solutions which have been proposed to the foregoing problems have failed to be completely satisfactory on account of the structural complexity which they introduce in the device.
This invention sets out to provide an actuator device which can solve such problems in a simple and reliable manner.
According to one aspect of the present invention, there is provided an actuator device for opening a sliding door, comprising a box wherein a driven shaft is rotatably carried, wherewith a pinion gear in mesh engagement with a rack mounted on the sliding door and helical gear wheel in mesh engagement with a worm screw keyed to a driveshaft driven by an electric motor housed in said box are rotatively rigid, characterized in that said electric motor comprises a rotor carried rotatably on said driveshaft and arranged between a pair of plates, one of said plates being rigid with said driveshaft and the other of said plates being rotatively coupled to but axially movable with respect to said driveshaft by means of a torque limiter comprising an adjustable spring adapted to cause said rotor to be clamped between said plates with a preset force.
Further details will become more apparent from the following description of an embodiment of this invention, in conjunction with the accompanying illustrative drawings, where: Figure 1 is a sectional view of this device taken along the axis of the electric motor; Figure 2 is a sectional view taken in the plane II--II of Figure 1; and Figure 3 is a view taken in the plane Ill-Ill of Figure 2.
The device illustrated comprises a drive including a helical gear wheel 1 and a worm screw 2 which is formed on the driveshaft 3 driven by an electric motor 4. The driveshaft 3 is rotatably carried, through bearings 5 and 6, in a box or casing 7. The electric motor 4 is of the reversible type and, through the drive 1, 2, drives a pinion gear 8 which is in mesh engagement with a rack, not shown, made rigid with a door to be controlled.
On the driveshaft 3, is mounted the rotor 9 of the electric motor 4, the stator 10 whereof is secured in the box 7 by means of tie boits 11. The rotor is allowed to rotate about the shaft 3 by means of intervening bushings 12 which also enable it to perform axial movements. The rotor is interposed between a pair of plates 1 3, 14, the former whereof comprises a flange of the shaft 3 and the latter is mounted slidably on said shaft.
Between the opposite faces of the rotor 9 and plates 13, 14, rings 1 5, 1 6 are interposed which are formed from a friction material.
At that end of the driveshaft 3 which carries the motor 4, there is provided an axial bore 17, wherethrough a pin 18 is inserted diametrically, the opposite ends whereof project outwardly from the shaft 3, through longitudinal slots 19, to radially engage in the plate 14. Thus, the plate 14 is made rotatively rigid with but axially slidable relatively to the drive shaft 3.
The plate 14 is urged to bear against the rotor by a spring 20 accommodated in the bore 1 7. The spring 20, at one end, abuts against an adjustment screw 21, and, at the other end, acts on a V-shaped pin 22 set astride the pin 1 9. It is noted that the spring 20 also serves as a torque limiter which can be adjusted by means of the screw 21, inasmuch as it limits the driving force of the shaft 3 to a value dependent on the compression of the spring 20 and frictional coefficient between the plates 13, 14 and the opposite faces of the rotor 9.
The helical wheel 1 is rotatably carried on a second or driven shaft 23 which is journalled, by means of bearings 24, 25, in the box 7 along an axis which extends perpendicularly to that of the shaft 3. To the end of the shaft 23 which protrudes out of the box, is keyed the cited pinion gear 8 which entrains the rack.
At the central area of the shaft 23, there is formed a diametrically throughgoing slot 26, wherethrough a pin 27 is inserted. The opposite ends of the pin 27 protrude out of the slot 25 and engage with a diametrical groove 28 on the hub 29 of the wheel 1. The pin is caused to bear against the hub 29 by a spring 30 mounted on the shaft 23 and bearing on the pin with the interposition of a cap 31 the peripheral edge whereof is turned up such as to prevent the pin from sliding off radially. The opposite end of the spring 30 abuts against a ring 32, which bears, in turn, against the bearing 24.
The box 7 is provided, axially to the shaft 23, with a sleeve or tubular portion 33, wherein a cylinder 34 is threaded which carries a ring nut 35. As may be seen in Figure 3, the cylinder 34 has an axial cavity 36 accommodating a lock 37 to be operated by means of a flat key 38. The lock 37 has a radially movable bit 39, which engages, with the cylinder 34 partly threaded out of the tubular portion 33, in an opening 40 of the portion 33.
The shaft 23 is provided, at its remote end from the pinion gear 8, with an axial bore 41 which opens to the slot 26 and guides a stem 42 in sliding relationship therein.
The stem 42 has one end in contact with the pin 27 and the other end extended into the portion 33 as far as the lock 37.
The foregoing device operates in the following manner.
By operating the electric motor 4, through the drive 1,2, the pinion gear 8 is rotated and the door caused to open or close depending on the direction of rotation selected for the motor. In normal operating conditions, in fact, the rotor 9 is clamped between the plates 1 3, 14, whilst the helical gear wheel 1 is made rotatively rigid with the shaft 23 by the pin 27 entering the groove 28.
Where, while the door is being closed, a foreign object happens to obstruct the free sliding movement of the door, there would occur an increase in the resisting couple such as to cause the rotor 9 to slip between the plates 13, 14 and the shaft 3, and consequently the door itself, to stop moving.
By converse, where the door is to be opened manually, such as on account of a power outage, the wheel 1 is released from the shaft 23, thereby the pinion gear 8 is allowed to freewheel while remaining in mesh with the door rack. It is noted that it is mandatory that the wheel 1 be released, because the drive 1,2 cannot rotate when the door is to be moved manually. The wheel 1 is released by disengaging the bit 39 from the opening 40 by operation of the key 38 and threading the cylinder 34 into the tubular portion 33. The lock 37 will then contact the stem 42 which slides in the bore 41 and ejects the pin 27 from the groove 28 against the bias of the spring 30. Advantageously, the lock 37 is of the type wherein the bit 29 is biased outwardly by a spring which, upon threading the cylinder 34 out to its initial position, allows the bit to automatically engage with the opening 40 as the latter is moved into alignment therewith.

Claims (4)

1. An actuator device for opening a sliding door, comprising a box wherein a driven shaft is rotatably carried, wherewith a pinion gear in mesh engagement with a rack mounted on the sliding door and helical gear wheel in mesh engagement with a worm screw keyed to a driveshaft driven by an electric motor housed in said box are rotatively rigid, characterized in that said electric motor comprises a rotor carried rotatably on said driveshaft and arranged between a pair of plates, one of said plates being rigid with said driveshaft and the other of said plates being rotatively coupled to but axially movable with respect to said driveshaft by means of a torque limiter comprising an adjustable spring adapted to cause said rotor to be clamped between said plates with a preset force.
2. A device according to Claim 1, characterized in that said driven shaft has a diametrically throughgoing slot wherethrough a pin is inserted the opposite ends whereof project out of said slot and engage in a diametrical groove on the hub of a helical gear wheel, said pin being caused to bear against said hub by a spring bearing on said pin with the interposition of a cap, and in that within the box and coaxially with said driven shaft, there is formed a tubular portion threadably accommodating a cylinder provided with a ring nut and having a cavity for accommodating a lock therein, said lock including a radially movable bit operative, with said cylinder in a partly threaded out position, to engage with an opening in said tubular portion, in the end of said driven shaft adjacent said tubular portion there being formed an axial bore open on one side to said slot and on the other side to said tubular portion and wherethrough a stem is slidingly movable and effective to cause, with said cylinder in a threaded in position, said piri to disengage from said hub groove.
3. A device according to Claim 1, characterized in that said driveshaft has an axial bore accommodating said spring abutting with one end against an adjustment screw threaded into said bore and with the other end acting on a pin extending diametrically across said bore and protruding outwards through longitudinal slots to radially engage with said movable plate.
4. An actuator device for opening a sliding door, substantially as herein described with reference to the accompanying drawings.
GB8113596A 1981-05-01 1981-05-01 Actuator device for opening a sliding door Expired GB2097855B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8113596A GB2097855B (en) 1981-05-01 1981-05-01 Actuator device for opening a sliding door

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8113596A GB2097855B (en) 1981-05-01 1981-05-01 Actuator device for opening a sliding door

Publications (2)

Publication Number Publication Date
GB2097855A true GB2097855A (en) 1982-11-10
GB2097855B GB2097855B (en) 1985-07-17

Family

ID=10521556

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8113596A Expired GB2097855B (en) 1981-05-01 1981-05-01 Actuator device for opening a sliding door

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100269415A1 (en) * 2007-07-10 2010-10-28 Sven Busch Sliding Door Suspension with Integral Linear Drive System
US10337216B2 (en) 2014-01-02 2019-07-02 Strattec Power Access Llc Vehicle door

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9523231B2 (en) 2003-11-10 2016-12-20 Strattec Power Access Llc Attachment assembly and drive unit having same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100269415A1 (en) * 2007-07-10 2010-10-28 Sven Busch Sliding Door Suspension with Integral Linear Drive System
US8474185B2 (en) * 2007-07-10 2013-07-02 Dorma Gmbh + Co. Kg Sliding door suspension with integral linear drive system
US10337216B2 (en) 2014-01-02 2019-07-02 Strattec Power Access Llc Vehicle door

Also Published As

Publication number Publication date
GB2097855B (en) 1985-07-17

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PCNP Patent ceased through non-payment of renewal fee