GB1214831A - Improvements relating to switch mechanisms for actuators - Google Patents
Improvements relating to switch mechanisms for actuatorsInfo
- Publication number
- GB1214831A GB1214831A GB1130667A GB1130667A GB1214831A GB 1214831 A GB1214831 A GB 1214831A GB 1130667 A GB1130667 A GB 1130667A GB 1130667 A GB1130667 A GB 1130667A GB 1214831 A GB1214831 A GB 1214831A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switches
- rods
- springs
- plate
- abutments
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/006—Switches operated by mechanical overload condition, e.g. transmitted force or torque becoming too high
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/02—Details
- H01H19/10—Movable parts; Contacts mounted thereon
- H01H19/14—Operating parts, e.g. turn knob
- H01H19/18—Operating parts, e.g. turn knob adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift
- H01H19/186—Operating parts, e.g. turn knob adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift with travelling nuts
Landscapes
- Electrically Driven Valve-Operating Means (AREA)
Abstract
1,214,831. Actuation of switches. ENGLISH ELECTRIC CO. Ltd. 8 March, 1968 [10 March, 1967], No. 11306/67. Heading H1N. In an end-stop sorew-and-nut gear 26, 46 Fig. 5, for an electric motor-driven actuator the switches 60-66, Fig. 3, are actuated through push rods 52, 54, 56, 58 urged by springs 90a towards the switches but from which the spring loading is successively applied or removed by plate 50 on the nut 46 which engages sleeves 82, 84, 86, 88 urged by the springs 90 towards abutments 74, 76, 78, 80 on the rods. Plate 50 comprises comb-like recesses 70 through which the abutments freely pass. In the example the abutments comprise short coil springs 92, Fig. 8, threaded on the rods having spring arm legs 94 engaged in guideways 98 of a fixed plate 100 to hold them against rotation. The switches 62, 64 may also be actuated on overload through a spring-loaded push rod 16 engaging the end of the actuator motor shaft (6), Fig. 1 (not shown), which moves axially on overload. Rod 16 carries a cross-plate 104 with adjustable hollow threaded bolts 114, 116 slidable over the actuating rods 54, 56 and engageable with stops 126 or 128 in one or other direction of movement. Stop screws 130, 132 limit the maximum load setting of the bolts 114, 116 and are held in the set position by springs 124 engaging knurled heads. The screw-and-nut gear is also linked with an indicator 132 as for use with a valve actuator. An arrangement for adjusting the range of movement of the pointer 135 through a linkage gear is described. A further linkage for actuating a potentiometer for remote indication of the valve setting is also described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1130667A GB1214831A (en) | 1967-03-10 | 1967-03-10 | Improvements relating to switch mechanisms for actuators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1130667A GB1214831A (en) | 1967-03-10 | 1967-03-10 | Improvements relating to switch mechanisms for actuators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1214831A true GB1214831A (en) | 1970-12-02 |
Family
ID=9983827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1130667A Expired GB1214831A (en) | 1967-03-10 | 1967-03-10 | Improvements relating to switch mechanisms for actuators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1214831A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0005016A1 (en) * | 1978-04-04 | 1979-10-31 | Rotork Limited | An electric switch control unit, more particularly for electric motor driven actuators |
| FR2599524A1 (en) * | 1986-05-28 | 1987-12-04 | Somfy | Device for automatically stopping the winding and unwinding of a windable element |
| FR2750532A1 (en) * | 1996-06-26 | 1998-01-02 | Actilift S A | Security mechanism for motorised jack |
-
1967
- 1967-03-10 GB GB1130667A patent/GB1214831A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0005016A1 (en) * | 1978-04-04 | 1979-10-31 | Rotork Limited | An electric switch control unit, more particularly for electric motor driven actuators |
| FR2599524A1 (en) * | 1986-05-28 | 1987-12-04 | Somfy | Device for automatically stopping the winding and unwinding of a windable element |
| FR2750532A1 (en) * | 1996-06-26 | 1998-01-02 | Actilift S A | Security mechanism for motorised jack |
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