GB2153004A - Improvements in drive mechanisms - Google Patents

Improvements in drive mechanisms Download PDF

Info

Publication number
GB2153004A
GB2153004A GB08401300A GB8401300A GB2153004A GB 2153004 A GB2153004 A GB 2153004A GB 08401300 A GB08401300 A GB 08401300A GB 8401300 A GB8401300 A GB 8401300A GB 2153004 A GB2153004 A GB 2153004A
Authority
GB
United Kingdom
Prior art keywords
clutch
pressure plate
gear wheel
gear
rotation
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
GB08401300A
Other versions
GB2153004B (en
GB8401300D0 (en
Inventor
Tong Siong Lye
Kim Wong
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB08401300A priority Critical patent/GB2153004B/en
Publication of GB8401300D0 publication Critical patent/GB8401300D0/en
Publication of GB2153004A publication Critical patent/GB2153004A/en
Priority to MYPI86000143A priority patent/MY100065A/en
Application granted granted Critical
Publication of GB2153004B publication Critical patent/GB2153004B/en
Priority to SG1/88A priority patent/SG188G/en
Priority to HK713/88A priority patent/HK71388A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F16H35/00—Gearings or mechanisms with other special functional features
    • F16H35/10—Arrangements or devices for absorbing overload or preventing damage by overload
    • 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
    • E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
    • E05F15/614—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by meshing gear wheels, one of which being mounted at the wing pivot axis; operated by a motor acting directly on the wing pivot axis
    • 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
    • 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 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
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/23—Actuation thereof
    • E05Y2201/232—Actuation thereof by automatically acting means
    • E05Y2201/236—Actuation thereof by automatically acting means using force or torque
    • 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
    • E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
    • E05Y2400/10—Electronic control
    • E05Y2400/30—Electronic control of motors
    • E05Y2400/3013—Electronic control of motors during manual wing operation
    • 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
    • E05Y2900/40—Application of doors, windows, wings or fittings thereof for gates

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Mechanical Operated Clutches (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

A mechanism (10) for opening and closing gates comprises a motor (15) (Figure 2) which drives a worm gear (19) engaged with a worm wheel (30) for driving an output shaft (32) connected to a gate in use. The mechanism includes a clutch arrangement in which a pressure plate (40) is urged by springs (44) against the worm wheel (30) and an abutment on a hub (31). The clutch mechanism is enclosed in a housing (14) filled with lubricating oil and slipping of the clutch allows manual override of the drive mechanism. <IMAGE>

Description

SPECIFICATION Improvements in drive mechanisms The invention relates to drive mechanisms, and more particularly but not exclusively to drive mechanisms for opening and closing gates.
Mechanisms are known for opening and closing gates in which a motor rotates a gate through a gear mechanism, such as a worm gear. A difficulty arises, however, in providing satisfactory means for allowing manual operation of the gates, should the need arise.
According to the invention there is provided a mechanism for opening and closing gates, which mechanism comprises input means adapted to be driven by a motor, output means from the mechanism for moving a gate, and means for transmitting movement from the input means to the output means, which transmission means comprises clutch means for allowing manual operation of a gate, which clutch means comprise a clutch pressure plate, a bearing plate and spring means for urging the pressure plate against the bearing plate with a predetermined force to allow manual operation of a gate by slipping of the clutch means when a predetermined moment is applied about the axis of rotation of the output means.
The clutch means are preferably enclosed within a clutch housing, and the housing is preferably filled with lubricating fluid.
The transmission means preferably includes a gear mechanism, and the bearing plate may be a gear wheel of the gear mechanism.
The output means, the gear wheel, and the clutch pressure plate are preferably mounted for rotation about a common axis.
The output means and the clutch pressure plate are preferably fixed for rotation on a common shaft, and the gearwheel is preferably mounted on the shaft to allow relative rotational movement between the gear wheel and the shaft.
The gearwheel may be rotatably mounted on a mounting element fixed for rotation with the shaft, the mounting element having abutment means for providing an axial stop against axial movement of the gear wheel under bias of said spring means.
The spring means preferably comprises a multiplicity of springs spaced circumferentially about the axis of rotation of the pressure plate. There may be between four and ten springs, for example seven.
The gearwheel may be driven by a worm gear.
The invention further provides a mechanism according to the invention for opening and closing gates and a motor for driving the mechanism.
The motor may drive a worm wheel which drives a worm gear which in turn drives said gear wheel.
By way of example, one embodiment of a mechanism according to the invention will now be described with reference to the accompanying drawings, in which Figure 1 is a cut-way view of a mechanism according to the invention; and Figure2 is an exploded view illustrating all the parts which make up the mechanism of Figure 1 and the motor drive therefor.
As shown in Figures 1 and 2, a drive mechanism generally indicated at 10 has a main body portion 11 which includes a plate 12 to fit at ground level, for example set in concrete, the plate having four holes 13 formed therein.
Beneath the plate 12 extends a housing part 14 for housing a gear mechanism and clutch assembly.
The description of the mechanism and its operatin will start from the motor drive end and finish with the output from the mechanism.
Drive to the mechanism and through the mechan ism to a gate is provided by a motor 15, conveniently an electric motor. The motor drives a worm gear within a motor casing 16 and the worm gear drives a ring gear 17 fixed for rotation with an input shaft 18 carrying a worm gear 19. Bolts 20 secure together the housing 16 and a motor flange 21 and bolts 22 secure together the motor flange 21 and an end cap 23, which end cap 23 in the completed assembly is threadedly engaged with the housing part 14. An oil seal 24 fits over the shaft 18 and a bearing 25, in this case a ball bearing, supports the shaft 18.
The ring gear 17 is fixed for rotation with the shaft 18 bya key 26.
The end of the shaft 18 remote from the ring gear 17 is supported in a second bearing 27 which in turn is supported by an end cap 28 threadedly engaged with the housing part 14.
The worm gear 19 is meshed with a worm wheel 30 rotatably mounted on a hub 31. The hub 31 is in turn mounted on an output shaft 32, the hub 31 being fixed for rotation with the output shaft 32 by a key 33.
The output shaft 32 is mounted for rotation within the housing part 14 by upper and lower bearings 34 and 35 respectively, in this case ball bearings. The lower bearing 35 is supported in a housing cover 36.
Beneath the worm wheel 30, a clutch pressure plate 40 is fixed for rotation with the hub 31 by a key 41.
Beneath the pressure plate 40, a spring base 42 is secured to the hub 31 by a ring nut 43 threadedly mounted on the lower end of the hub 31. A set of coil springs 44 are engaged in recesses 45 in the pressure plate 40, the springs 44 acting on the spring base 42 and the pressure plate 40 to urge the worm wheel 30 into frictional engagement with the hub 31.
The spring base 42 also has recesses formed therein and engaged by the springs 44 to prevent shifting and slipping of the springs.
Two oil seals 50 and 51 seal a chamber surrounding the clutch and worm wheel mechanisms, a cap 52 providing access to the chamber to fill the chamber with a lubricant such as lubricating oil.
The upper end of the shaft 32 carries an output arm 60 fixed for rotation with the shaft 32 by a key 61. A bolt 62 serves to secure the output arm 60 to the shaft 32 and a cap 63 fits over the free end of the shaft 32.
The output arm 60 is secured to a gate in use.
Finally, a lower cover 70 is secured to the plate 12 by bolts 71.
In operation, the motor 15 drives the shaft 18 and the worm gear 19 on the shaft 18 drives the worm wheel 30 to rotate the output shaft 32 and hence open or close the associated gate. In the event that manual opening or closing of the associated gate is required, the clutch assembly permits such manual operation once a predetermined moment is exerted about the axis of rotation of the gate, by the hub 31 and clutch pressure plate 40 slipping against the worm wheel 30. The strength of the springs 44 determine the moment required to cause slipping of the clutch assembly and the advantage of this assembly is that reliable and trouble free manual operation of an associated gate is allowed. The presence of lubricating oil in the clutch and worm gear housing reduces friction and noise.

Claims (12)

1. A mechanism for opening and closing gates, which mechanism comprises input means adapted to be driven by a motor, output means from the mechanism for moving a gate, and means for transmitting movement from the input means to the output means, which transmission means comprises clutch means for allowing manual operation of a gate, which clutch means comprise a clutch pressure plate, a bearing plate and spring means for urging the pressure plate againstthe bearing plate with a predetermined force to allow manual operation of a gate by slipping the clutch means when a predetermined moment is applied about the axis of rotation of the output means.
2. A mechanism as claimed in claim 1 wherein the clutch means are enclosed within a clutch housing.
3. A mechanism as claimed in Claim 2 wherein the housing is filled with lubricating fluid.
4. A mechanism as claimed in any preceding Claim wherein the transmission means includes a gear mechanism and the bearing plate is a gear wheel of the gear mechanism.
5. A mechanism as claimed in Claim 4wherein the output means, the gearwheel and the clutch pressure plate are mounted for rotation about a common axis.
6. A mechanism as claimed in Claim 5 wherein the output means and the clutch pressure plate are fixed for rotation on a common shaft and the gear wheel is mounted on the shaft to allow relative rotational movement between the gear wheel and the shaft.
7. A mechanism as claimed in Claim 6 wherein the gear wheel is rotatably mounted on a mounting element having abutment means for providing an axial stop against axial movement of the gear wheel under bias of said spring means.
8. A mechanism as claimed in any one of Claims 4 to 7 wherein the gear wheel is driven by a worm gear.
9. A mechanism as claimed in any preceding Claim wherein the spring means comprises a multi plicity of springs spaced circumferentially about the axis of rotation of the pressure plate.
10. A mechanism as claimed in Claim 9 wherein there are between four and ten springs.
11. A mechanism for opening and closing gates substantially as herebefore described with reference to and as shown in the accompanying drawings.
12. A mechanism as claimed in any preceding Claim for opening and closing gates in combination with a motor for driving the mechanism.
GB08401300A 1984-01-18 1984-01-18 Improvements in drive mechanisms Expired GB2153004B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB08401300A GB2153004B (en) 1984-01-18 1984-01-18 Improvements in drive mechanisms
MYPI86000143A MY100065A (en) 1984-01-18 1986-11-26 Drive mechanism for opening and closing gates.
SG1/88A SG188G (en) 1984-01-18 1987-12-09 Improvements in drive mechanisms
HK713/88A HK71388A (en) 1984-01-18 1988-09-08 Improvements in drive mechanisms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08401300A GB2153004B (en) 1984-01-18 1984-01-18 Improvements in drive mechanisms

Publications (3)

Publication Number Publication Date
GB8401300D0 GB8401300D0 (en) 1984-02-22
GB2153004A true GB2153004A (en) 1985-08-14
GB2153004B GB2153004B (en) 1987-09-03

Family

ID=10555160

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08401300A Expired GB2153004B (en) 1984-01-18 1984-01-18 Improvements in drive mechanisms

Country Status (4)

Country Link
GB (1) GB2153004B (en)
HK (1) HK71388A (en)
MY (1) MY100065A (en)
SG (1) SG188G (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2602806A1 (en) * 1986-08-13 1988-02-19 Desclos Gerard Barrier with horizontal rotary opening and with driving of the force-limiting arm which can be varied as a function of the resisting torque
GB2264534A (en) * 1992-02-27 1993-09-01 Autogates Sdn Bhd A drive mechanism including a springless clutch
FR2712556A1 (en) * 1993-11-19 1995-05-24 Renault Vehicle panel closing and opening control gear
ES2070706A2 (en) * 1993-01-15 1995-06-01 Bode Masats S A Compact device for actuating vehicle passenger doors
WO2004005113A1 (en) * 2002-07-09 2004-01-15 David Waldron Loughnan Mechanical coupling

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2602806A1 (en) * 1986-08-13 1988-02-19 Desclos Gerard Barrier with horizontal rotary opening and with driving of the force-limiting arm which can be varied as a function of the resisting torque
GB2264534A (en) * 1992-02-27 1993-09-01 Autogates Sdn Bhd A drive mechanism including a springless clutch
GB2264534B (en) * 1992-02-27 1995-06-14 Autogates Sdn Bhd A drive mechanism including a springless clutch
ES2070706A2 (en) * 1993-01-15 1995-06-01 Bode Masats S A Compact device for actuating vehicle passenger doors
FR2712556A1 (en) * 1993-11-19 1995-05-24 Renault Vehicle panel closing and opening control gear
WO2004005113A1 (en) * 2002-07-09 2004-01-15 David Waldron Loughnan Mechanical coupling

Also Published As

Publication number Publication date
SG188G (en) 1988-06-17
MY100065A (en) 1989-08-18
GB2153004B (en) 1987-09-03
GB8401300D0 (en) 1984-02-22
HK71388A (en) 1988-09-16

Similar Documents

Publication Publication Date Title
US4367660A (en) Window lift drive
US4428250A (en) Electric drive, particularly for a window lifting mechanism in a motor vehicle
US5501117A (en) Motor assembly with gear housing containing pinion gear support bearing
US5178026A (en) Damper device for motor
US6481306B2 (en) Geared motor having seal member for restraining intrusion of water or the like
US5404963A (en) Power divider lubrication in tandem driving axles
US4616528A (en) Valve actuator with continuous manual override
US4895048A (en) Powered actuator with manual override feature
US10190354B2 (en) Actuator device for automatically activating the vehicle door of a motor vehicle
US5259261A (en) Actuating drive comprising two friction partners
EP1837544A1 (en) Power take-off having an axially movable bearing
US3943790A (en) Marine outboard gear assembly
JP2539525B2 (en) Centrifugal clutch
GB2153004A (en) Improvements in drive mechanisms
GB2297596A (en) Friction clutch has automatic wear adjuster and electric motor driven actuator
FR2399589A1 (en) MECHANISM FOR CAUSING THE DECELERATION AND REVERSE OF THE DIRECTION OF ROTATION OF THE INPUT SHAFT OF A GEARBOX
US3587350A (en) Power transmission including friction drive and gear drive
GB2287277A (en) Vehicle lock actuator transmission
JPH0433922B2 (en)
US4926705A (en) Starter device for internal combustion engines
SU1753099A1 (en) Worm gearing
US2319842A (en) Valve control
US3391583A (en) Skip tooth actuator
US7028803B2 (en) Electromechanical steering system for a vehicle
GB2325715A (en) Device for operating an automated shift transmission

Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 20040117