EP2172949B1 - Actuator - Google Patents
Actuator Download PDFInfo
- Publication number
- EP2172949B1 EP2172949B1 EP08164071A EP08164071A EP2172949B1 EP 2172949 B1 EP2172949 B1 EP 2172949B1 EP 08164071 A EP08164071 A EP 08164071A EP 08164071 A EP08164071 A EP 08164071A EP 2172949 B1 EP2172949 B1 EP 2172949B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- actuator
- housing
- position member
- pin element
- yoke
- 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.)
- Not-in-force
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F7/1607—Armatures entering the winding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/081—Magnetic constructions
- H01F2007/083—External yoke surrounding the coil bobbin, e.g. made of bent magnetic sheet
Abstract
Description
- The invention relates to an actuator according to claim 1.
- Actuators are used in various technical fields in order to move movable components. Known actuators comprise a position member and a drive mechanism designed to move the position member. The position member is rotatable around a longitudinal axis of the position member.
- The
US 2002/0130745 A1 describes an electromagnet switching device for underground mining applications. The device comprises two controllable electromagnets accommodated in a case. In each electromagnet, a cylindrical movable armature is arranged. Both armatures comprise a central bore into which a switching plunger is screwed. The switching plunger serves for actuating a hydraulic valve. An effective switching lift of the switching plunger is adjustable by screwing the plunger further into or out of the armature. - The
US 4,518,939 describes an electromagnetic actuator with a solenoid and an armature that moves between two well-defined positions without rotating. Rotation of the armature is prevented by a hexagonal cross-section of the armature. One of the two armature positions is defined by a retainer that protrudes from a housing of the actuator. - The objective of the invention is to provide an improved actuator. This objective is achieved by an actuator according to claim 1.
- According to the invention, an actuator comprises a housing and a drive mechanism arranged therein. The drive mechanism is provided for moving a position member. An outer end of the position member is designed to move a movable component. The actuator further comprises a pin element that projects from the housing. The pin element has a face that is designed to rest against the movable component to prevent a rotation of the movable component.
- An advantage of this actuator is that an undesired rotation of the position member and the movable component can be prevented.
- In one embodiment of the invention, the actuator comprises a metallic yoke and the pin element is part of the metallic yoke. That way, no additional components are needed and no extra assembly process step is necessary for producing the actuator.
- Preferably, the metallic yoke is U-shaped with a front section, a lower section and a rear section, wherein the yoke embraces the drive mechanism between the front section and the rear section of the yoke, and the position member is fed through an opening provided in the front section of the yoke.
- In a preferred configuration, the pin element is connected to the front section of the yoke.
- According to another embodiment, the pin element is a metallic pin mounted in the housing of the actuator.
- In another embodiment, the pin element is made of plastic material.
- Preferably, the plastic material is polyamide.
- Preferably, the plastic material comprises a friction reduction, for example Teflon.
- In a preferred configuration, the pin element is made in one part with the housing. An advantage of this configuration is that no extra components are needed for the actuator and no extra assembly process step is necessary for producing the actuator.
- In a preferred configuration of the actuator, the pin element is arranged in parallel with the position member.
- In one configuration, the pin element has a cross-section with the shape of the letter T.
- The invention is now explained in greater detail with reference to the figures in which
-
Figure 1 shows a perspective view of an actuator; -
Figure 2 shows a sectional drawing of an actuator; -
Figure 3 shows a perspective view of an actuator; -
Figure 4 shows a sectional drawing of an actuator; and -
Figure 5 shows a sectional drawing of an actuator. - Throughout the description of
figures 1 to 5 , the same reference symbols are used for equal or equally acting components. -
Figure 1 shows a sectional drawing of anactuator 100. Theactuator 100 comprises ahousing 101. Thehousing 101 may, for example, be made of plastic material. - A
front surface 107 of thehousing 101 comprises anopening 108. Aposition member 103 is fed through theopening 108 in thefront surface 107 of thehousing 101, such that alongitudinal axis 130 of theposition member 103 is oriented perpendicular to thefront surface 107 of thehousing 101. In the direction of thelongitudinal axis 130 of theposition member 103 theposition member 103 is partially located inside thehousing 101 and partially located outside thehousing 101. - The
position member 103 is rotationally symmetric with respect to thelongitudinal axis 130 of theposition member 103. Theposition member 103 may for example comprise a cylindrical shape. In any case, theposition member 103 is rotatable around thelongitudinal axis 130 of theposition member 103. - The position member may be made of a metal. The
position member 103 may, for example, be an armature of an electromagnet. - The
position member 103 is movable in the direction of thelongitudinal axis 130 of theposition member 103. Theposition member 103 can be moved farther into thehousing 101 or farther out of thehousing 101. Two discrete positions of theposition member 103 may be provided, one farther inside thehousing 101, one farther outside thehousing 101. Theposition member 103 may then be movable between the two discrete positions. - The
position member 103 is encircled by acoil spring 109. One end of thecoil spring 109 is connected to or supported by theposition member 103, the other end of thecoil spring 109 is connected to or supported by thehousing 101. Thecoil spring 109 may support moving theposition member 103 into thehousing 101 or out of thehousing 101. - An
outer end 105 of theposition member 103 may be connected to a movable component in order to move the movable component with theposition member 103. - An
upper surface 121 of thehousing 101 comprises a common edge with thefront surface 107 of thehousing 101. Near this common edge anopening 122 is provided on theupper surface 121 of thehousing 101. Apin element 120 is fed through the opening 122 in theupper surface 121 of thehousing 101. Thepin element 120 may comprise the shape of a cuboid arranged in parallel with theposition member 103. Thepin element 120 may, for example, be made of a metal. Thepin element 120 may comprise a length such that thepin element 120 projects over theposition member 103. - On a side of the
housing 101 that is opposed to thefront surface 107, thehousing 101 comprises anelectrical connector 123. Theelectrical connector 123 may electrically connect theactuator 100 to an external device to provide theactuator 100 with electric energy and to control movements of theposition member 103 of theactuator 100. -
Figure 2 shows a sectional drawing of theactuator 100 where theactuator 100 is sliced on a plane that is parallel to thelongitudinal axis 130 of theposition member 103 and perpendicular to theupper surface 121 of thehousing 101. - The
housing 101 houses adrive mechanism 102. Thedrive mechanism 102 may be an electromagnet. In alternative embodiments, the drive mechanism may be a piezoelectric drive mechanism or another kind of drive mechanism. Thedrive mechanism 102 comprises a position member guiding 104. The position member guiding 104 houses theposition member 103 which may be an armature. Thedrive mechanism 102 is designed to move theposition member 103 in the position member guiding 104 along thelongitudinal axis 130 of theposition member 103. Thedrive mechanism 102 may drive theposition member 103 to a first position in which theposition member 103 protrudes farther out of thehousing 101 and to a second position in which theposition member 103 protrudes to a lesser extend out of thehousing 101. - The
housing 101 further houses ayoke 110. Theyoke 110 may, for example, be made of a metal. Theyoke 110 comprises the shape of the letter U with afront section 111, alower section 112 and arear section 113. Thefront section 111 of theyoke 110 is arranged in parallel to thefront surface 107 of thehousing 101. Thelower section 112 of theyoke 110 is arranged in parallel to alower surface 124 of thehousing 101 that is opposed to theupper surface 121 of thehousing 101. - The
yoke 110 embraces thedrive mechanism 102 between thefront section 111 and therear section 113 of theyoke 110. Theyoke 110 may guide a magnetic field of thedrive mechanism 102. - The
front section 111 of theyoke 110 comprises anopening 114 that is arranged next to theopening 108 of thefront surface 107 of thehousing 101 such that theopening 108 and theopening 114 provide a common opening. Theposition member 103 is fed through theopening 108 in thefront surface 107 of thehousing 101 and theopening 114 on thefront section 111 of theyoke 110. - The
pin element 120 is connected to thefront section 111 of theyoke 110. To this end, thefront section 111 of theyoke 110 extends through theopening 122 on theupper surface 121 of thehousing 101 to form thepin element 120. Outside thehousing 101 thepin element 120 extends in parallel to theposition member 103. Thepin element 120 is made of the same material as theyoke 110. An advantage of this embodiment is that only one member is necessary to form theyoke 110 and thepin element 120. - The
outer end 105 of theposition member 103 is connected to amovable component 106. Theouter end 105 of theposition member 103 may comprise a smaller diameter than the rest of theposition member 103. Themovable component 106 may be clipped onto theouter end 105 of theposition member 103. Theposition member 103 may be used to move themovable component 106. - The
position member 103 is rotatable around thelongitudinal axis 130 of theposition member 103. Since themovable component 106 is connected to theposition member 103, a rotation of theposition member 103 leads to a rotation of themovable component 106 around thelongitudinal axis 130 of theposition member 103 as well. Themovable component 106 may also be rotatable around theposition member 103. - The
pin element 120 is provided to prevent a rotation of themovable component 106 and/or theposition member 103. Thepin element 120 rests against themovable component 106. Since thepin element 120 is fixed on theactuator 100, thepin element 120 resting against themovable component 106 prevents a rotation of themovable component 106. - The
pin element 120 may, for example, rest against a flat surface of themovable component 106. This may have the advantage of low friction between thepin element 120 and themovable component 106. Thepin element 120 may as well be bound in a recess of themovable component 106. This may provide a higher friction between thepin element 120 and themovable component 106 but may allow for a better suppression of a rotation of themovable component 106. Thepin element 120 may as well be fed through an opening of themovable component 106. This may suppress a rotation of themovable component 106 even better. -
Figure 3 displays a perspective view of another embodiment of theactuator 100. In the embodiment offigure 3 , thepin element 120 projects from thefront surface 107 of thehousing 101 of theactuator 100. In this embodiment, thepin element 120 is arranged at a position of thefront surface 107 of thehousing 101 that is near a common edge of thefront surface 107 and thelower surface 124 of thehousing 101. - In the embodiment of
figure 3 , thepin element 120 comprises a cross-section having the shape of the letter T. This may stabilize thepin element 120 against a bending or skewing thepin element 120. - The
pin element 120 offigure 3 may, for example, be made of a plastic material. Thepin element 120 may, for example, be made of the same material as thehousing 101 of theactuator 100. This is depicted in the sectional drawing offigure 4 . Infigure 4 , theactuator 100 is sliced on a plane that is parallel to thelongitudinal axis 130 of theposition member 103 and perpendicular to thelower surface 124 of thehousing 101.Figure 4 shows that thepin element 120 is connected to thehousing 101. An advantage of this embodiment is that for thepin element 120 and thehousing 101, only one member is necessary. No additional members or processing steps are necessary for providing thepin element 120. -
Figure 5 shows a sectional drawing of another embodiment of theactuator 100. In the sectional drawing offigure 5 , theactuator 100 is sliced on a plane that is parallel to thelongitudinal axis 130 of theposition member 103 and perpendicular to thelower surface 124 of thehousing 101. - In the embodiment of
figure 5 , thepin element 120 is assembled into thehousing 101 or overmolded into thehousing 101. To this end, thefront surface 107 of thehousing 101 comprises anopening 125 that is arranged near a common edge of thefront surface 107 and thelower surface 124 of thehousing 101. Thepin element 120 is fed through theopening 125 in thefront surface 107 of thehousing 101 and jammed inside thehousing 101. Thepin element 120 may be made of a metal or a plastic material. Thepin element 120 may comprise a ripping arranged at an end of thepin element 120 that is inserted into thehousing 101 to support thepin element 120 getting jammed in thehousing 101. The pin element may, for example, comprise a cuboid or a cylindrical shape.
Claims (12)
- An actuator (100)
comprising a housing (101) and a drive mechanism (102) with a position member (103) arranged therein,
wherein the drive mechanism (102) is provided for moving the position member (103),
wherein an outer end (105) of the position member (103) is configured to move a movable component (106),
characterized in that
the actuator (100) comprises a pin element (120) that projects from the housing (101),
wherein the pin element (120) is having a face that is configured to rest against the movable component (106) to prevent a rotation of the movable component (106). - The actuator (100) as claimed in claim 1,
wherein the drive mechanism (102) is an electromagnet, wherein the position member (103) is an armature of the electromagnet. - The actuator (100) as claimed in any of claims 1 or 2, wherein the actuator (100) comprises a metallic yoke (110), wherein the pin element (120) is part of the metallic yoke (110).
- The actuator (100) as claimed in claim 3,
wherein the metallic yoke (110) is u-shaped with a front section (111), a lower section (112) and a rear section (113), wherein the yoke (110) embraces the drive mechanism (102) between the front section (111) and the rear section (113) of the yoke (110),
wherein the position member (103) is fed through an opening (114) provided in the front section (111) of the yoke (110). - The actuator (100) as claimed in claim 4,
wherein the pin element (120) is connected to the front section (111) of the yoke (110). - The actuator (100) as claimed in any of claims 1 or 2, wherein the pin element (120) is a metallic pin mounted in the housing (101) of the actuator (100).
- The actuator (100) as claimed in any of claims 1 or 2, wherein the pin element (120) is made of plastic material.
- The actuator (100) according to claim 7,
wherein the plastic material is polyamide. - The actuator (100) according to any of claims 7 or 8,
wherein the plastic material comprises a friction reduction, for example Teflon. - The actuator (100) according to any of the previous claims,
wherein the pin element (120) is made in one part with the housing (101). - The actuator (100) according to any of the previous claims,
wherein the pin element (120) is arranged in parallel with the position member (103). - The actuator (100) according to any of the previous claims,
wherein the pin element (120) has a cross section with the shape of the letter T.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08164071A EP2172949B1 (en) | 2008-09-10 | 2008-09-10 | Actuator |
AT08164071T ATE488018T1 (en) | 2008-09-10 | 2008-09-10 | ACTUATOR |
DE602008003451T DE602008003451D1 (en) | 2008-09-10 | 2008-09-10 | actuator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08164071A EP2172949B1 (en) | 2008-09-10 | 2008-09-10 | Actuator |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2172949A1 EP2172949A1 (en) | 2010-04-07 |
EP2172949B1 true EP2172949B1 (en) | 2010-11-10 |
Family
ID=40332890
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08164071A Not-in-force EP2172949B1 (en) | 2008-09-10 | 2008-09-10 | Actuator |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2172949B1 (en) |
AT (1) | ATE488018T1 (en) |
DE (1) | DE602008003451D1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10943720B2 (en) | 2018-08-13 | 2021-03-09 | Honeywell International Inc. | Solenoid including armature anti-rotation structure |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2482840A (en) * | 1945-07-25 | 1949-09-27 | Bendix Aviat Corp | Electric motor brake |
US4518939A (en) | 1984-04-12 | 1985-05-21 | Regdon Corporation | Solenoid with retainer stop |
DE20104677U1 (en) | 2001-03-17 | 2001-05-31 | Dbt Gmbh | Electromagnetic switching device |
-
2008
- 2008-09-10 DE DE602008003451T patent/DE602008003451D1/en active Active
- 2008-09-10 EP EP08164071A patent/EP2172949B1/en not_active Not-in-force
- 2008-09-10 AT AT08164071T patent/ATE488018T1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ATE488018T1 (en) | 2010-11-15 |
DE602008003451D1 (en) | 2010-12-23 |
EP2172949A1 (en) | 2010-04-07 |
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