GB2153004A - Improvements in drive mechanisms - Google Patents
Improvements in drive mechanisms Download PDFInfo
- 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
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 44
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 2
- 230000001050 lubricating effect Effects 0.000 claims description 2
- 239000010687 lubricating oil Substances 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 1
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.
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)
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 |
-
1984
- 1984-01-18 GB GB08401300A patent/GB2153004B/en not_active Expired
-
1986
- 1986-11-26 MY MYPI86000143A patent/MY100065A/en unknown
-
1987
- 1987-12-09 SG SG1/88A patent/SG188G/en unknown
-
1988
- 1988-09-08 HK HK713/88A patent/HK71388A/en not_active IP Right Cessation
Cited By (6)
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 |
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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 |