WO2012149665A1 - Mécanisme d'actionnement de commutateur - Google Patents
Mécanisme d'actionnement de commutateur Download PDFInfo
- Publication number
- WO2012149665A1 WO2012149665A1 PCT/CN2011/000783 CN2011000783W WO2012149665A1 WO 2012149665 A1 WO2012149665 A1 WO 2012149665A1 CN 2011000783 W CN2011000783 W CN 2011000783W WO 2012149665 A1 WO2012149665 A1 WO 2012149665A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cam
- axis
- cam engagement
- engagement slider
- housing
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H27/00—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings
- H01H27/002—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings wherein one single insertion movement of a key comprises an unlocking stroke and a switch actuating stroke, e.g. security switch for safety guards
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H27/00—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings
- H01H27/002—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings wherein one single insertion movement of a key comprises an unlocking stroke and a switch actuating stroke, e.g. security switch for safety guards
- H01H2027/005—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings wherein one single insertion movement of a key comprises an unlocking stroke and a switch actuating stroke, e.g. security switch for safety guards the key receiving part having multiple openings to allow keys from different directions to operate the switch
Definitions
- the present invention generally relates to switches, and more particularly relates to a switch actuation mechanism.
- switches are used in myriad systems and environments, and are used to implement numerous and varied switch-related functions.
- switches are used to sense the position of one or more components.
- a switch may be configured to change states from an open position to a closed position, or vice-versa, when one or more components, such as hinged or sliding guard doors, screens, or protective covers for enclosures, attain a particular relative or absolute position.
- a switch is actuated via an actuation key that is coupled to a component and, when that component attains a particular position relative to another component, the actuation key actuates a switch actuation mechanism, which in turn changes the state of the switch.
- switches that are used to indicate the relative positions of components are generally safe, reliable, and robust, but may suffer one or more drawbacks.
- some of the presently known switches use actuation mechanisms and actuation keys that may exhibit relatively short lifetimes, may require relatively large pull forces on the key in order to operate properly, may have relatively small and a relatively low number of key insertion slots and, as a result, may use relatively thin, easily deformable keys.
- a switch actuation mechanism includes a housing a cam, and a cam engagement slider.
- the cam is rotationally mounted within the housing and is configured to rotate about a first axis.
- the cam engagement slider is mounted within the housing and adjacent the cam.
- the cam engagement slider is configured to translate along a second axis that is transverse to the first axis, and is movable between a lock position, in which it prevents the cam from rotating about the first axis, and an unlock position, in which it allows the cam to rotate about the first axis.
- a switch actuation mechanism in another embodiment, includes a housing, a cam, a first cam engagement slider, and a second cam engagement slider.
- the cam is rotationally mounted within the housing and is configured to rotate about a first axis.
- the cam includes a first side, a second side, and an outer peripheral surface between the first and second sides.
- the first cam engagement slider is mounted within the housing and adjacent the first side of the cam.
- the first cam engagement slider is configured to translate along a second axis that is transverse to the first axis.
- the second cam engagement slider is mounted within the housing and adjacent the second side of the cam.
- the second cam engagement slider is configured to translate along a third axis that is transverse to the first axis and parallel to the second axis.
- the first and second cam engagement sliders are each movable between a lock position, in which the first and second cam engagement sliders prevent the cam from rotating about the first axis, and an unlock position, in which the first and second cam engagement sliders allow the cam to rotate about the first axis.
- a switch actuation mechanism includes an actuation key, a housing, a cam, a first cam engagement slider, a second cam engagement slider, a first rotary shaft, and a second rotary shaft.
- the housing includes a top, a bottom, at least two opposing sides, and an inner surface that defines a housing inner volume.
- the top has two key insertion slots formed therein to receive the actuation key, and each opposing side includes one key insertion slot to receive the actuation key.
- the cam is rotationally mounted within the housing inner volume and is configured to rotate about a first axis.
- the cam includes a first side, a second side, and an outer peripheral surface between the first and second sides.
- the first cam engagement slider is mounted within the housing inner volume and adjacent the first side of the cam.
- the first cam engagement slider is configured to translate along a second axis that is transverse to the first axis, and is movable between a lock position, in which the first cam engagement slider prevents the cam from rotating about the first axis, and an unlock position, in which the first cam engagement slider allows the cam to rotate about the first axis.
- the second cam engagement slider is mounted within the housing inner volume and adjacent the second side of the cam.
- the second cam engagement slider is configured to translate along a third axis that is transverse to the first axis and parallel to the second axis, and is movable between a lock position, in which the second cam engagement slider prevents the cam from rotating about the first axis, and an unlock position, in which the second cam engagement slider allows the cam to rotate about the first axis.
- the first rotary shaft is rotationally mounted within the housing inner volume and is configured to rotate about a fourth axis that is transverse to the first, second, and third axes. The first rotary shaft is further configured to selectively engage the first cam engagement slider and, upon rotation about the fourth axis, to move the first cam engagement slider at least from the lock position to the unlock position.
- the second rotary shaft is rotationally mounted within the housing and is configured to rotate about a fifth axis that is transverse to the first, second, and third axes, and parallel to the fourth axis.
- the second rotary shaft is further configured to selectively engage the second cam engagement slider and, upon rotation about the fifth axis, to move the second cam engagement slider at least from the first position to the second position.
- FIG. 1 depicts a plan view of one exemplary embodiment of a key-operated switch system
- FIGS. 2 depicts a top plan view of an embodiment of a fully assembled switch actuation mechanism that may be used to implement the key-operated switch system of FIG. i ;
- FIG. 3 depicts an angle plan view of an embodiment of the switch actuation mechanism of FIG. 2 with the cover removed;
- FIG. 4 depicts an isometric view of the switch actuation mechanism of FIG. 2 with the housing assembly illustrated transparently;
- FIG. 5 depicts an exploded plan view of the switch actuation mechanism of FIG. 2;
- FIGS. 6-8 depict various plan views of an embodiment of a cam that may be used to implement the switch actuation mechanism of FIG. 2.
- a key-operated switch system 100 includes a switch 102, an actuation key 104, and a switch actuation mechanism 106, and.
- the switch 102 may be variously implemented, using any one of numerous known switch configurations, not just the one that is depicted.
- the switch 102 is preferably configured to change states from an open position to a closed position, or vice- versa, in response to the movement of a plunger (not depicted in FIG. 1).
- the plunger as will be described momentarily, is moved in response to insertion of the actuation key 104 into, and removal of the actuation key 104 from, the switch actuation mechanism 106.
- the actuation key 104 may be variously configured, but in the depicted embodiment it includes a mount section 108 and a switch operator section 1 12.
- the mount section 108 is configured to be mounted on, or otherwise coupled to, a movable component.
- the mount section 108 includes a plurality of fastener openings 1 14.
- a non-depicted fastener such as a screw or other suitable device, may be inserted through each fastener opening 1 14 and into the component to which the actuation key 104 is being mounted.
- the switch operator section 1 12 extends from the mount section 108 and, as will be described further below, is selectively inserted into, and subsequently removed from, the switch actuation mechanism 106.
- the switch operator section 1 12 may be variously configured, in the depicted embodiment it includes a pair of slider engagement arms 1 16 - a first engagement arm 1 16-1 and a second engagement arm 1 16-2 - and a pair of cam engagement arms 1 18 - a first cam engagement arm 1 18-1 and a second cam engagement arm 1 18-2.
- the slider engagement arms 1 16 are connected to, and extend from, the mount section 108, and are separated from each other to form a space 122.
- the first and second cam engagement arms 1 18-1 , 1 18-2 extend perpendicularly from the first and second slider engagement arms 1 16-1 , 1 16-2, respectively, and into the space 122.
- the switch actuation mechanism 106 includes a housing assembly 202.
- the housing assembly 202 may be variously configured and implemented, in the depicted embodiment it includes a housing 204 and a cover 206.
- the cover 206 is coupled to the housing 204 via, for example, a plurality of fasteners 208.
- the housing assembly 202 includes a top 212, a bottom 214, a first pair of opposing sides 216-1 , 216-2, a second pair of opposing sides 218-1, 218-2, and an inner surface 302 that defines an inner volume 304 (see FIG. 3).
- the housing assembly 202 additionally includes a plurality of key insertion slots 222 that are each configured to receive the actuation key 104. Although the number of key insertion slots 222 may vary, in the depicted embodiment the housing assembly 202 includes four key insertion slots.
- the top 212 e.g., the cover 206 includes two key insertion slots 222 (222-1 , 222- 2), and the each of the first pair of opposing sides 216-1 , 216-2 includes one key insertion slot 222 (222-3, 222-4).
- the depicted switch actuation mechanism 106 additionally includes a cam 306, a first cam engagement slider 308-1 , a second cam engagement slider 308-2, a first rotary shaft 312-1 , and a second rotary shaft 312-2.
- the cam 306 is rotationally mounted within the housing inner volume 304 and is configured to be selectively rotated about a first axis 402, in either a first 401 or a second 403 rotational direction (see FIG. 4).
- the cam 306 is configured, upon receipt of an input force, to selectively rotate about the first axis 402 between a first position, which is the position depicted in FIGS.
- the cam 306 may be rotationally mounted using any one of numerous components and techniques, it is mounted on a shaft 404 (FIG. 4). As shown most clearly in FIG. 5, the shaft 404 is disposed within, and rotates relatively to, a pair of shaft mounts 502 (only one visible in FIG. 5) that are formed in the housing inner volume 304.
- a particular embodiment of the cam 306 is depicted, and is seen to include a first side 602, a second side 604, and an outer peripheral surface 606 between the first and second sides 602, 604.
- the first and second sides 602, 604 each have a locking slot 608, a cavity 612, and a stopper rib 614 formed therein.
- the outer peripheral surface 606 has a recess 615, a pair of plunger insertion apertures 616-1 , 616-2, and a pair of key insertion ribs 618-1 , 618-2 formed therein.
- first and second cam engagement sliders 308-1 , 308-2 are non-rotationally mounted within the housing inner volume 304 adjacent to the cam 306.
- the first cam engagement slider 308-1 is disposed adjacent to the first side 602 of the cam 306, and the second cam engagement slider 308-2 is disposed adjacent to the second side 604 of the cam 306.
- the first and second cam engagement sliders 308-1, 308-2 while being non-rotationally mounted, are each configured to translate along an axis that is transverse to the first axis 402, and thereby move between a lock position, which is the position depicted in FIGS. 3 and 4, and an unlock position.
- First and second return springs 405-1 , 405-2 are disposed within the housing inner volume 304 and are configured to supply a bias force to the first and second cam engagement sliders 308-1 , 308-2, respectively, that bias the first and second cam engagement sliders 308-1 , 308-2 toward the lock position.
- the cam 306 is prevented from rotating about the first axis 402.
- the cam 306 may be rotated about the first axis 402.
- the first cam engagement slider 308- 1 is configured to translate along a second axis 406, and the second cam engagement slider 308-2 is configured to translate along a third axis 408.
- the first and second cam engagement sliders 308- 1, 308-2 each include a locking protrusion 504, a pair of rotary shaft engagement flats 506 (506-1 , 506-2), and a pair of actuation key engagement ramps 508 (508-1 , 508-2).
- the locking protrusions 504 are each disposed within an associated locking slot 608 when the first and second cam engagement sliders 308-1 , 308-2 are at least in the lock position, and are disposed outside of the associated locking slots 608, and more specifically within the associated cavities 612, when the first and second cam engagement sliders 308-1 , 308-2 are at least in the unlock position.
- first and second cam engagement sliders 308-1, 308-2 are non-rotationally mounted, when they are in the lock position, the cam 306 is prevented from rotating about the first axis 402 in either the first rotational direction 401 or the second rotational direction 403. Conversely, when the first and second cam engagement sliders 308-1 , 308-2 are in the unlock position, the cam 306 may be rotated about the first axis 402 in either the first rotational direction 401 or the second rotational direction 403.
- the rotary shaft engagement flats 506 are engaged (or at least selectively engaged) by portions of one of the rotary shafts 312-1 , 312-2, and the actuation key engagement ramps 508 are selectively engaged by the first and second cam engagement arms 1 18-1 , 1 18-2. As will be described in more detail further below, this engagement, together with a force supplied from the actuation key 104, moves the first and second cam engagement sliders 308-1 , 308-2 from the lock positions to the unlock positions.
- the bias force supplied from the first and second return springs 405-1, 405-2 moves the first toW63 ⁇ 4 J3 ⁇ 4We3 ⁇ 4fkgement sliders 308-1 , 308-2 from the unlock positions back into the lock positions.
- the first and second rotary shafts 312-1 , 312-2 are each rotationally mounted within the housing inner volume 304 and are configured to rotate about axes that are transverse to each of the first 402, second 406, and third 408 axes.
- the first rotary shaft 312-1 is configured to rotate about a fourth axis 412
- the second rotary shaft 312-2 is configured to rotate about a fifth axis 414.
- the first and second rotary shafts 312-1 , 312-2 are additionally configured to at least selectively engage the first and second cam engagement sliders 308-1 , 308-2, respectively.
- the first and second rotary shafts 312-1 , 312-2 upon being rotated about the fourth and fifth axes 412, 414, respectively, move the first and second cam engagement sliders 308-1 , 308-2, respectively, from at least the lock positions to the unlock positions.
- each of the first and second rotary shafts 312-1 , 312-2 include a shaft section 314 and two slider engagement tabs 316 (316-1 , 316-2).
- the shaft sections 314 are rotationally mounted on a pair of rotary shaft mounts 506 (only one visible in FIG. 5) that are formed in the housing inner volume 304.
- the slider engagement tabs 316 extend from the shaft section 314 and engage the associated cam engagement sliders 308-1, 308-2, and more specifically the associated rotary shaft engagement flats 506-1 , 506-2.
- the slider engagement tabs 316 on the first and second rotary shafts 312-1 , 312-2 move the first and second cam engagement sliders 308-1 , 308-2 to the unlock positions.
- switch actuation mechanism 106 Having described the switch actuation mechanism 106 from a structural standpoint, and having generally described the functions of various components that make up the switch actuation mechanism 106, the overall operation of the depicted key-operated switch system 100, and specifically the switch actuation mechanism 106, will now be provided. Before doing so, however, it is noted that the switch actuation mechanism 106 was described above as being configured with two cam engagement sliders 308, two rotary shafts 312, and two return springs 405. It will be appreciated, however, that in alternative embodiments, the switch actuation mechanism 106 could be implemented with one cam engagement slider 308, one rotary shaft 312, and one return spring 405.
- the switch actuation mechanism 106 is configured such that the cam 306 is in the first position, and the first and second engagement sliders 308-1 , 308-2 are each in the lock positions. Thereafter, if a force is supplied to the actuation key 104 to move it into one of the key slots 222, the actuation key 104 will cause the first and second engagement sliders 308-1 , 308-2 to move into the unlock positions.
- the actuation key 104 will also supply a force to the cam 306 that causes the cam 306 to rotate about the first axis 402.
- the manner in which the actuation key 104 causes the first and second engagement sliders 308-1 , 308-2 to move, and the direction in which the actuation key 104 causes the cam 306 to rotate, will depend upon the key slot 222 into which the actuation key 104 is inserted.
- the manner in which the actuation key 104 causes the first and second engagement sliders 308-1 , 308-2 to move will first be described. Thereafter, the direction that the actuation key 104 causes the cam 306 to rotate will be described.
- first or second key slot 222-1 or 222- 2 e.g., the key slots formed through the cover 206
- the ends of the first and second slider engagement arms 1 16-1 , 1 16-2 will engage the first and second rotary shafts 312-1, 312-2, and cause the first and second rotary shafts 312-1 , 312-2 to rotate about the fourth and fifth axes 412, 414.
- first and second cam engagement arms 1 18-1 , 1 18-2 will not engage the first and second rotary shafts
- first and second slider engagement arms 1 16-1 , 1 16-2 will engage the actuation key engagement ramps 508.
- the first and second cam engagement sliders 308-1 , 308-2 will translate from the lock positions to the unlock positions, along the second and third axes 406, 408. This will in turn move the locking protrusions 504 on the first arid second cam engagement sliders 308-1 , 308-2 out of the associated locking slots 608, and into the associated cavities 612, allowing the cam 306 to rotate about the first axis 402.
- the first and second cam engagement arms 1 18-1 , 1 18-2 will slide past the first insertion rib 618-1 and engage the cam 306. Conversely, if the actuation key 104 is inserted into either the second key slot 222-2 or the fourth key slot 222-4, the first and second cam engagement arms 1 18-1 , 1 18-2 will slide past the second insertion rib 618-2 and engage the cam 306.
- the end of the plunger 416 (see FIG. 4) is disposed within the recess 615 that is formed in the cam outer peripheral surface 606. While it is in the first position, if the cam 306 is rotated in the first rotational direction 401 , it will move toward the second position. As it is moved out of the first position, the end of the plunger 416 will slide along the contour of the cam outer peripheral surface 606 and move out of the recess 615. When the cam 306 reaches the second position, the end of the plunger 416 will extend into the first plunger insertion aperture 616-1 , causing the switch (not illustrated) to change state.
- the cam 306 If, while the cam 306 is in the first position, it is rotated in the second rotational direction 403, it will move toward the third position. As the cam 306 is moved out of the first position, the end of the plunger 416 will also slide along the contour of the cam outer peripheral surface 606 and move out of the recess 615. When the cam 306 reaches the third position, the end of the plunger 416 will extend into the second plunger insertion aperture 616-2, causing the switch (not illustrated) to change state. It is noted that in both the second position and the third position, the locking protrusions 504 on the first and second cam engagement sliders 308-1 , 308-2 engage the associated stopper rib 614.
- the cam 306 is in the third position and the actuation key 104 is subsequently removed from the second or third key slot 222-2, 222-3, the first and second cam engagement arms 1 18-1 , 1 18-2 will cause the cam 306 to rotate in the first rotational direction 401. This will cause the cam 306 to move out of the third position back toward the first position. As the cam 306 is rotated in the first rotational direction 401 , the plunger 416 will exit the second plunger insertion aperture 616-2 and slide along the contour of the cam outer peripheral surface 606.
- the switch actuation mechanism disclosed herein exhibits a relatively long lifetime, does not rely on relatively large pull forces on the actuation key in order to operate properly, has relatively large and a relatively high number of key insertion slots, and may use a relatively robust actuation key.
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Push-Button Switches (AREA)
- Mechanisms For Operating Contacts (AREA)
- Switches With Compound Operations (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
L'invention porte sur un mécanisme d'actionnement de commutateur, lequel mécanisme comprend un boîtier, une came et une coulisse de prise de came. La came est montée de façon à pouvoir tourner à l'intérieur du boîtier, et est configurée de façon à tourner autour d'un premier axe. La coulisse de prise de came est montée à l'intérieur du boîtier, et est adjacente à la came. La coulisse de prise de came est configurée de façon à effectuer une translation le long d'un second axe qui est transversal au premier axe, et est mobile entre une position de verrouillage, dans laquelle elle empêche la came de tourner autour du premier axe, et une position de déverrouillage, dans laquelle elle permet à la came de tourner autour du premier axe.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2011/000783 WO2012149665A1 (fr) | 2011-05-04 | 2011-05-04 | Mécanisme d'actionnement de commutateur |
| CN2011205285061U CN202405137U (zh) | 2011-05-04 | 2011-12-16 | 开关致动机构 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2011/000783 WO2012149665A1 (fr) | 2011-05-04 | 2011-05-04 | Mécanisme d'actionnement de commutateur |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2012149665A1 true WO2012149665A1 (fr) | 2012-11-08 |
| WO2012149665A8 WO2012149665A8 (fr) | 2013-01-24 |
Family
ID=47107727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2011/000783 Ceased WO2012149665A1 (fr) | 2011-05-04 | 2011-05-04 | Mécanisme d'actionnement de commutateur |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2012149665A1 (fr) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0755063A1 (fr) * | 1995-07-21 | 1997-01-22 | Reiter S.R.L. | Interrupteur de sécurité électromagnétique verrouillé à l'aide d'une clé |
| US6307167B1 (en) * | 1998-07-30 | 2001-10-23 | Omron Corporation | Key switch |
| JP2002157944A (ja) * | 2000-11-17 | 2002-05-31 | Omron Corp | キースイッチ |
-
2011
- 2011-05-04 WO PCT/CN2011/000783 patent/WO2012149665A1/fr not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0755063A1 (fr) * | 1995-07-21 | 1997-01-22 | Reiter S.R.L. | Interrupteur de sécurité électromagnétique verrouillé à l'aide d'une clé |
| US6307167B1 (en) * | 1998-07-30 | 2001-10-23 | Omron Corporation | Key switch |
| JP2002157944A (ja) * | 2000-11-17 | 2002-05-31 | Omron Corp | キースイッチ |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012149665A8 (fr) | 2013-01-24 |
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