EP3836179A1 - Commutateur rotatif - Google Patents

Commutateur rotatif Download PDF

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Publication number
EP3836179A1
EP3836179A1 EP19214539.9A EP19214539A EP3836179A1 EP 3836179 A1 EP3836179 A1 EP 3836179A1 EP 19214539 A EP19214539 A EP 19214539A EP 3836179 A1 EP3836179 A1 EP 3836179A1
Authority
EP
European Patent Office
Prior art keywords
disk
latch
rotary switch
spindle
switch according
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.)
Withdrawn
Application number
EP19214539.9A
Other languages
German (de)
English (en)
Inventor
Martijn Desiré BEUN
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.)
Ewac Holding BV
Original Assignee
Ewac Holding BV
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 Ewac Holding BV filed Critical Ewac Holding BV
Priority to EP19214539.9A priority Critical patent/EP3836179A1/fr
Publication of EP3836179A1 publication Critical patent/EP3836179A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01H19/20—Driving mechanisms allowing angular displacement of the operating part to be effective in either direction
    • H01H19/24—Driving mechanisms allowing angular displacement of the operating part to be effective in either direction acting with snap action
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/14—Energy stored by deformation of elastic members by twisting of torsion members
    • H01H5/16—Energy stored by deformation of elastic members by twisting of torsion members with auxiliary means for temporarily holding parts until torsion member is sufficiently strained
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • 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
    • 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
    • H01H19/64—Encased switches adapted for ganged operation when assembled in a line with identical switches, e.g. stacked switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/14—Energy stored by deformation of elastic members by twisting of torsion members

Definitions

  • the invention relates to a rotary switch, in particular a rotary switch for switching high power DC or AC currents.
  • Rotary switches typically comprise an insulating housing with stationary contacts accessible and a spindle which is rotatable within the housing and which carries one or more rotary contact bridges electrically connecting pairs of stationary contacts in at least one position of the switch, the so-called IN position, and disconnecting them in another position, the so-called OFF position.
  • Such switches make it possible to switch between the IN position, allowing passage of a current, and the OFF position, interrupting the current.
  • Such rotary switches are typically hand operated.
  • An example of a rotary switch is disclosed in WO 2009/121744 . In practice, it was found that there is a need for a switch which can be switched fast, safely and reliably, allowing remote switching by a simple and economical control unit as well as switching by hand.
  • a rotary switch comprising:
  • the latch can for example be moveable by a solenoid and/or by hand.
  • a solenoid makes it possible to provide a plurality of rotary switches with a control unit centrally switching a plurality of the rotary switches to the OFF position.
  • the lock disk has a recess receiving the latch in the latching position to lock the lock disk and the spindle.
  • This can be a recess matching the latch or a recess having any suitable shape allowing the latch to lock the spindle.
  • the spring can be a spiral torsion spring, with one end connected to the lock disk and one end connected to a housing of the rotary switch.
  • the inner end of the spiral torsion spring closest to the spindle can be connected to the lock disk, while the other end can be connected to the housing, or the other way around.
  • the rotary switch may further comprise a pusher disk fixed to the spindle, the pusher disk comprising an outline profiled to abut the latch when the latch is in the latching position.
  • the pusher disk can be rotatable relative to the lock disk between a first position with the outline abutting the latch when the latch is in the latching position, and a second position.
  • the outline of the pusher disk can be configured to gradually push the latch from the latching position to the retracted position when the pusher disk is moved to the second position.
  • the pusher disk can have a chamfered edge gradually pushing the latch from the latching position to the retracted position when the pusher disk is moved to the second position.
  • chamfered means that the edge makes an angle with the radial direction and a blunt angle with adjacent contour sections of the pusher disk.
  • the pusher disk is moveable between the aforementioned first position with the chamfered edge being at one side of the latch receiving recess in the lock disk, and the aforementioned second position with the chamfered edge being at an opposite side of the recess.
  • the point of the chamfered edge closest to the spindle abuts the latch.
  • the latch is pushed out of the recess and the recess is fully covered by the pusher disk.
  • the pusher disk and the lock disk will typically be essentially parallel and aligned.
  • the lock disk may for example be mainly circular, while the pusher disk may have a circular main part with a smaller diameter and an extension with a larger diameter, e.g., corresponding to the diameter of the lock disk, with the chamfered edge bridging the main part and the extension.
  • the pusher disk may for example comprise a rotation limiter limiting relative rotation of the lock disk and the pusher disk, for example over an angular range of about 5 - 45 degrees, between the afore mentioned first and second positions.
  • a rotation limiter can for example comprise one or more catch pins fixed to the lock disk, and one or more recesses in the contour of the pusher disk, the recesses receiving the catch pins.
  • the recesses can be curved to allow movement of the one or more catch pins with the lock disk.
  • the catch pin or pins can be part of the pusher disk and be moveably received in recesses of the lock disk.
  • the rotary switch may further comprise a case or cap encasing the spring and the lock disk, the latch and, if present, the solenoid and/or the pusher disk.
  • the rotary switch may also comprise a manual control element, such as a knob or handle for manually rotating the spindle.
  • the rotary switch will typically comprise an insulation housing with stationary contacts accessible for connection to external conductors.
  • the spindle may carry one or more rotational contacts bridging pairs of stationary contacts when the spindle is in the IN position.
  • a housing may for example comprise a stack of switch modules or decks.
  • the housing may for example comprises a rectangular shape, at least when viewed in the direction of the longitudinal axis, e.g., in top view.
  • the stationary contacts can be accessible from two opposite, e.g., substantially parallel sides. This makes it possible to use a plurality of such switches arranged side by side, e.g., on a rail, a panel or similar support.
  • the switch is particularly suitable for use in the field of solar energy.
  • FIG. 1 shows a rotary switch 1 with a rectangular insulating housing 2 made of a number of stacked modules 3.
  • the rotary switch 1 is a switch according to WO 2009/121744 , herewith incorporated by reference.
  • Each module 3 encases a set of stationary contacts and a central circular recess (not shown).
  • the switch 1 also has a spindle 4 extending centrally along a longitudinal central axis of the rotary switch 1.
  • the spindle 4 carries a number of rotary contact bridges (not shown) each contact bridge being received in the circular recess of the respective housing modules 3, typically one rotary contact bridge per housing module 3.
  • the spindle 4 can be rotated about its longitudinal axis between an IN position where at least one of the rotary contact bridges contacting the stationary contacts of the respective housing module, and an OFF position where this contact is broken.
  • the housing 2 comprises openings 5 giving access for external conductors to the stationary contacts at two opposite side faces of the housing 2.
  • the rotary switch 1 comprises a cap 6 on top of the housing 2.
  • the spindle 4 projects through the cap 6.
  • the cap 6 covers a latch and release mechanism with a spiral torsion spring 7 for biasing the spindle 4 to the OFF position and a latch 19 for locking the spindle 4 in the IN position against the biasing action of the spiral torsion spring 7.
  • Figures 2 and 3 show the same rotary switch 1 without the cap 6 to show the various components of the latch and release mechanism.
  • the spiral torsion spring 7 is a spring of the mainspring type as typically used in mechanical clock-works: a spirally wound leaf spring with all windings in the same plane. Other types of springs can also be used, if so desired.
  • spiral torsion spring 7 On top of the spiral torsion spring 7 is an assembly 8 comprising an upper pusher disk 9 and a lower lock disk 10.
  • the spiral torsion spring 7 has an inner end (not shown) connected to the lock disk 10 and an outer end 11 connected to the housing 2.
  • the pusher disk 9 is rotatable relative to the lock disk 10. This rotation is limited by a rotation limiter, in this embodiment comprising two oppositely arranged catch pins 12 extending upward from the top side of the lock disk 10 in a respective recess 13A or slot 13B of the contour of the pusher disk 9.
  • the recesses 13A, 13B have a width allowing relative movement of the catch pins 12 within the respective recess.
  • the recesses 13A, 13B limit the possible movement of the respective catch pins 12 and, consequently, of the pusher disk 9 relative to the lock disk 10.
  • the maximum angle of rotation of the pusher disk 9 relative to the lock disk is 10 about 20 degrees.
  • the lock disk 10 has a diameter corresponding to the outer diameter of the spiral torsion spring 7.
  • the pusher disk 9 is fixed to the spindle 4 and has a main part 15 with a diameter smaller than the diameter of the lock disk 10 and a radial extension 16 with a larger diameter corresponding to the diameter of the lock disk.
  • the radial extension 16 has one end with a radially extending edge 17 and an opposite end with a chamfered edge 18 (see Figures 4A-D ).
  • the latch and release mechanism further comprises a latch 19 and a solenoid 20 configured to move the latch 19 between a retracted position and a latching position.
  • the lock disk 10 has a radial recess 21 for receiving the latch 19 in the latching position ( Figure 4A ).
  • the thickness of the lock disk 10 is less than the diameter of the latch 19, so the latch 19 partly projects above the top surface of the lock disk 10.
  • Figure 4A shows the rotary switch 1 in top view without the cap 6.
  • the pusher disk differs with the one of Figures 2 and 3 , in that the slot 13B here is an open recess.
  • the spindle can be turned back into the IN position of Figure 4A by hand against the action of the spiral torsion spring 7. In that position, the latch 19 is again received in the recess 21.
  • the latch and release mechanism can also be operated manually.
  • a user can rotate the spindle 4, which is typically provided with a knob or grip facilitating manual operation. If the spindle 4 is rotated the chamfered edge 18 of the pusher disk 9 pushes against the part of the latch 19 projecting from the surface of the lock disk 10. This pushing force pushes the latch 19 into its retracted position ( Figure 4B ).
  • the catch pins 12 and the recesses 13 of the rotation limiter, and the chamfered edge 18 are configured such that the catch pins 12 reach their terminal position within the associated recess 13 just when the latch 19 is pushed out of the radial recess 21.
  • the latch and release mechanism is placed on top of a rotation control module 22 of the rotary switch 1.
  • a rotation control module typically comprises a set of spring elements rapidly forcing the spindle into predefined positions during switching.
  • a suitable example of such a rotation control module is disclosed in WO 2009/121744 .
  • the spiral torsion spring 7 of the latch and release mechanism is sufficiently strong to overcome counterforces generated by the spring elements of the rotation control module 22.

Landscapes

  • Switch Cases, Indication, And Locking (AREA)
EP19214539.9A 2019-12-09 2019-12-09 Commutateur rotatif Withdrawn EP3836179A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19214539.9A EP3836179A1 (fr) 2019-12-09 2019-12-09 Commutateur rotatif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19214539.9A EP3836179A1 (fr) 2019-12-09 2019-12-09 Commutateur rotatif

Publications (1)

Publication Number Publication Date
EP3836179A1 true EP3836179A1 (fr) 2021-06-16

Family

ID=68840966

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19214539.9A Withdrawn EP3836179A1 (fr) 2019-12-09 2019-12-09 Commutateur rotatif

Country Status (1)

Country Link
EP (1) EP3836179A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3283596A (en) * 1964-08-21 1966-11-08 Illinois Tool Works Snap action switch mechanism
US20080121502A1 (en) * 2005-01-31 2008-05-29 Yasunori Naganuma Rotary Switch Device
WO2009121744A1 (fr) 2008-04-01 2009-10-08 Santon Group B.V. Interrupteur électrique rotatif
CN106057545B (zh) * 2016-06-23 2018-06-01 常熟开关制造有限公司(原常熟开关厂） 旋转开关操作机构
US20190139725A1 (en) * 2017-11-07 2019-05-09 The Durham Co. Double throw switch operating mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3283596A (en) * 1964-08-21 1966-11-08 Illinois Tool Works Snap action switch mechanism
US20080121502A1 (en) * 2005-01-31 2008-05-29 Yasunori Naganuma Rotary Switch Device
WO2009121744A1 (fr) 2008-04-01 2009-10-08 Santon Group B.V. Interrupteur électrique rotatif
CN106057545B (zh) * 2016-06-23 2018-06-01 常熟开关制造有限公司(原常熟开关厂） 旋转开关操作机构
US20190139725A1 (en) * 2017-11-07 2019-05-09 The Durham Co. Double throw switch operating mechanism

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