WO2023111032A1 - Elektromagnetische vorrichtung, sowie verfahren zum herstellen einer solchen elektromagnetischen vorrichtung - Google Patents
Elektromagnetische vorrichtung, sowie verfahren zum herstellen einer solchen elektromagnetischen vorrichtung Download PDFInfo
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- WO2023111032A1 WO2023111032A1 PCT/EP2022/085879 EP2022085879W WO2023111032A1 WO 2023111032 A1 WO2023111032 A1 WO 2023111032A1 EP 2022085879 W EP2022085879 W EP 2022085879W WO 2023111032 A1 WO2023111032 A1 WO 2023111032A1
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- Prior art keywords
- magnetic core
- electromagnetic device
- area
- longitudinal axis
- core
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- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000000463 material Substances 0.000 claims abstract description 34
- 238000004804 winding Methods 0.000 claims abstract description 8
- 238000006073 displacement reaction Methods 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 5
- 238000003780 insertion Methods 0.000 description 13
- 230000037431 insertion Effects 0.000 description 13
- 230000007704 transition Effects 0.000 description 9
- 238000007789 sealing Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Classifications
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- 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
- H01F7/127—Assembling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0682—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid with an articulated or pivot armature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/02—Coils wound on non-magnetic supports, e.g. formers
-
- 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
-
- 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
- H01F7/128—Encapsulating, encasing or sealing
-
- 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
- H01F7/14—Pivoting armatures
Definitions
- Electromagnetic device and method for producing such an electromagnetic device are Electromagnetic device and method for producing such an electromagnetic device
- the present invention relates to an electromagnetic device with a magnetic core and a coil body arranged circumferentially around the magnetic core, and a method for producing such an electromagnetic device.
- electromagnetic devices are used, for example, in electromagnetic actuators, electromagnetic actuators being known, for example, in the form of electromagnetic switching or valve devices, such as in the form of an electromagnetic relay or solenoid valve.
- Solenoid valves for example in the form of tilting armature valves, are used, for example, as control valves for regulating the pressure of air, for example in a vehicle, for example in a commercial vehicle or bus for passenger transport.
- a brake system for a vehicle with an electronic service brake system includes at least one control valve for pressure regulation.
- An electromagnetic actuator in the form of a tilting armature valve which has an electromagnetic device, is known, for example, from DE 10 2016 105 532 A1.
- the electromagnetic actuator has an electromagnetic device that includes a magnetic core and a bobbin arranged around it.
- the bobbin In general, in electromagnetic devices to create an impure connection between the bobbin and the magnetic core, the bobbin is attached to the magnetic core by means of overmolding. In other electromagnetic devices, for example the bobbin is split longitudinally to position the magnetic core between the bobbin halves. Then the bobbin halves are assembled and the magnetic core fixed in the bobbin. On the one hand, this manufacturing variant is complicated and, on the other hand, the bobbin has a structural weakness due to this division.
- the present invention is based on the object of specifying an electromagnetic device of the type mentioned at the outset, which can be produced comparatively easily and quickly and which at the same time provides a secure connection between the magnetic core and the coil former.
- the invention relates to an electromagnetic device of the type mentioned in the opening paragraph according to the appended patent claims.
- Advantageous training and developments of the invention are specified in the subclaims and the following description.
- one aspect of the present invention relates to an electromagnetic device including a magnetic core having a longitudinal axis and a bobbin disposed circumferentially about the magnetic core.
- the coil body has at least one receiving area for receiving at least one coil winding of a coil, the receiving area being formed by at least one wall made of coil body material, which has a first area that runs in the direction of the longitudinal axis of the magnet core and at least a second area that runs transversely to the longitudinal axis of the magnetic core.
- the magnet core has a circumferential fastening area which has a tooth-like contour in cross section along the longitudinal axis of the magnet core and is interlocked with the coil body material of the coil body by displacement of coil body material, so that the magnet core is held on the coil body by the circumferential fastening area.
- the invention makes it possible to produce the electromagnetic device quickly and efficiently, in that the magnetic core is securely interlocked with the coil body with the peripheral fastening area of the magnetic core. Furthermore, this configuration of the electromagnetic device allows the magnetic core in Can be inserted longitudinally into the bobbin and there is a secure connection between the magnet core and the bobbin. The same applies, of course, when the coil body is pushed onto the magnet core. To avoid repetition, inserting the magnetic core into the coil body is equivalent to pushing the coil body onto the magnetic core.
- the electromagnetic device according to the invention allows a flexible choice of material for the magnetic core and the coil body.
- the materials With the known encapsulation of the magnet core from the prior art, it is instead necessary for the materials to be matched to one another so that the encapsulation material adheres to the magnet core.
- a further advantage of the invention is that no additional components are required to securely fasten the magnetic core in the coil body. Secure attachment is guaranteed with the all-round attachment area of the magnetic core. Only the magnetic core and the coil body are therefore necessary in order to develop the advantages of the electromagnetic device according to the invention. In comparison to a two-part coil body, the connection of the two coil body parts and a locking element, which fixes the magnetic core in the two-part coil body, is omitted in the electromagnetic device according to the invention.
- the electromagnetic device During operation of the electromagnetic device, the electromagnetic device becomes warm in most cases, for example due to heat loss in the coil winding, and the coil former tends to expand.
- the magnet core With the configuration of the electromagnetic device according to the invention, the magnet core remains securely connected to the coil body due to the circumferential fastening area, even despite expansion of the coil body, so that the magnet core is secured against falling out of the coil body.
- the electromagnetic device according to the invention can be used not only in electromagnetic actuators, such as a toggle valve, and electromagnets, but also in relays.
- the invention electromagnetic device such as in a solenoid valve, used in a braking system of a vehicle, in particular a commercial vehicle.
- the peripheral fastening area is designed in such a way that the coil former material flows around the tooth-like contour and forms an undercut.
- the coil body material which is displaced radially outwards by the circumferential fastening area when the magnetic core is inserted into the coil body in relation to the longitudinal axis, expands again in the direction of insertion behind the fastening area and thus undercuts the circumferential fastening area.
- the phrase "flow" in this context does not mean that the bobbin material is in a liquid state when the magnetic core is inserted into the bobbin, but essentially refers to a displacement and/or plastic deformation of bobbin material, such as plastic material.
- the undercut ensures that the magnetic core is securely fastened in the coil body in every situation.
- the magnetic core can also be sounded into the coil or coil body using an ultrasonic welding process, i.e. it can be arranged and fastened in it.
- the circumferential fastening area has a sawtooth-like contour in cross section along the longitudinal axis of the magnet core.
- the coil body can be interlocked or wedged securely and firmly with the magnetic core on the sawtooth-like contour.
- this sawtooth-like contour prevents the magnet core from accidentally falling out of the coil body counter to an insertion direction. This results in a reliable connection between the magnetic core and the coil body.
- the circumferential fastening area is arranged at a longitudinal position of the magnetic core at which there is no receiving area in the direction perpendicular to the longitudinal axis of the magnetic core.
- the coil body is stiffer than in the receiving area. This allows that after inserting the magnetic core
- the bobbin firmly surrounds the peripheral attachment area of the magnetic core, thus enabling a secure connection between the bobbin and the magnetic core.
- the electromagnetic device has a housing, in particular a magnet housing, which is arranged circumferentially around the coil former and exerts a pressing force acting transversely, preferably perpendicularly, to the longitudinal axis of the magnet core on the wall of the receiving area.
- the bobbin heats up and expands. Due to the expansion of the coil body, the coil body is supported on the magnet housing and directs a force to the peripheral fastening area of the magnet core, so that the undercut of the coil body behind the peripheral fastening area is reinforced. This results in a secure attachment of the magnet core in the coil body.
- the magnetic core has a plurality of peripheral fastening regions along the longitudinal axis, each of which has a tooth-like contour in cross section along the longitudinal axis of the magnetic core.
- the multiple fastening areas make it possible for the coil body to bear against the magnetic core in several partial areas, as seen in the longitudinal direction, and thus for the coil body to form a number of undercuts. This results in several attachment points for the magnetic core in the coil body. A secure attachment of the magnetic core in the coil body is made possible.
- a respective extension in the direction perpendicular to the longitudinal axis of the magnetic core of the respective tooth-like contour increases from one of the fastening areas to the following one of the fastening areas along the longitudinal axis of the magnetic core.
- the extension in the insertion direction of the magnetic core into the coil body increases.
- the peripheral fastening area has a contour with a flattened head area in cross section along the longitudinal axis of the magnet core.
- the flattened head area offers the bobbin an area which the bobbin can undercut in order to fix the magnetic core.
- the flattened head area enables the magnet core to grip in the coil body when the magnet core is moved in the opposite direction to the insertion direction in the coil body.
- the insertion direction of the magnet core runs along the longitudinal axis of the magnet core. This achieves reliable attachment of the magnetic core in the coil body.
- the circumferential fastening area has a contour in cross section along the longitudinal axis of the magnet core with a depression in the magnet core that has a smaller outer radius than the magnet core outside of the fastening area.
- the indentation in the peripheral fastening area makes it possible for the peripheral fastening area to have greater flexibility than without an indentation. This allows the magnetic core to be pushed into the coil body more easily.
- the tooth-like contour has an angle of at most 90° to the outside of the magnet core outside of the fastening area on a side running transversely to the longitudinal axis of the magnet core.
- the bobbin material comprises a plastic material.
- a bobbin with such a bobbin material is cheap and easy to manufacture and allows flexible deformation of the bobbin.
- the plastic material Be the main component of the bobbin material.
- the plastic material can have an elastomer as a component or as a main component.
- the coil body can also be formed entirely from a plastic, in particular an elastomer.
- the electromagnetic device is designed as an electromagnetic actuator. This is an advantageous application of the electromagnetic device according to the invention.
- the electromagnetic device has a movable magnetic armature body as a movable actuator element, which can be moved by a magnetic field caused by a current flow through the coil and the magnet core. This enables reliable switching of an electromagnetic actuator.
- the electromagnetic device is designed as an electromagnetic switching or valve device with a movable magnetic armature body as a switching or valve element, which can be moved by a magnetic field caused by a current flow through the coil and the magnetic core.
- the electromagnetic device is designed as an electromechanical relay or solenoid valve.
- the electromechanical device is designed as a solenoid valve for a pressure control module of a vehicle.
- a further aspect of the present invention is a method for producing an electromagnetic device according to the invention, which has the following steps:
- the coil former has a magnetic core receiving space into which the magnetic core is inserted.
- the method can have the method step: aligning the magnetic core to the magnetic core receiving space in the coil former, so that the longitudinal axis of the magnetic core and a longitudinal axis of the magnetic core receiving space are aligned with one another.
- FIG. 1A, 1B schematic cross-sectional representations of an exemplary tilting armature valve in which an electromagnetic device according to the invention, as shown in FIG. 2, can be used in principle
- FIG. 2 shows a schematic cross-sectional illustration of an embodiment of an electromagnetic device according to the invention, as can be used, for example, in a tilting armature valve according to FIG.
- FIG. 1 shows a simplified cross-sectional view of a tilting armature valve 100 in which an electromagnetic device according to the invention, as shown in FIG. 2 , can in principle be used.
- 1 is intended to illustrate an exemplary, practical use of an electromagnetic device using a tilting armature valve.
- the configuration of the magnetic core and the coil body according to the invention is shown in more detail in FIG. 2 according to an exemplary embodiment and can in principle be readily transferred to a tilting armature valve according to FIG. 1 by a person skilled in the art.
- FIG. 3 a circumferential fastening area according to an exemplary embodiment of the electromagnetic device is shown in detail.
- the tilting armature valve 100 can be an exemplary embodiment of a tilting armature valve 100 shown in DE 10 2016 105 532 A1.
- this can be a solenoid valve provided with reference number 100 in FIG. 1 there.
- other exemplary embodiments are also conceivable, for example in connection with solenoid valves as described in the other publications mentioned above.
- Related configurations of a solenoid valve described in DE 10 2016 105 532 A1 and its components as well as their use are also part of the disclosure of the present invention by reference.
- FIG. 1A shows a cross-sectional view through a toggle armature valve 100 with the armature in the first position.
- the tilting armature valve 100 has a coil element 110, an armature body (or armature for short) 115, a spring 120, a sealing element 125 and a cover shell 130.
- the coil element 110 comprises at least one magnet core 135, a coil body 128 arranged circumferentially around the magnet core 135, and a coil 140 arranged circumferentially around the coil body 128 with a package of coil windings (not explicitly shown).
- An end face of the armature 115 is supported by a bearing 145 .
- the Anchor 115 is moveable between a first position 147 and a second position 149 .
- the armature 115 is designed to be moved from the first position 147 into a second (tightened) position 149 when the coil 140 is activated.
- the armature 115 can be held in the second position 149 .
- the sealing element 125 is arranged on the side of the armature 115 facing away from the coil element 110 .
- a valve seat 150 with an outlet 155 and an inlet 157 for a fluid 158 is formed in the cover shell 130 .
- the outlet 155 can be closed in a fluid-tight manner by means of the sealing element 125 when the armature 115 is arranged in the first position 147 .
- the sealing element 125 can also act as a damping element in order to prevent the armature 115 from striking the valve seat 150 .
- the sealing element 125 can be attached to the armature 115 or a carrier element by vulcanization. It is also conceivable that an angle is generated when the armature 115 or sealing element 125 hits the valve seat 150 by means of an inclined nozzle or an obliquely shaped sealing element 125 or a curved armature 115 .
- Such a nozzle which is not explicitly shown in FIG. 1A, does not necessarily have to be integrated into the tilting anchor valve 100, but can also be provided by external housing parts.
- valve seat 150 is arranged in the coil element 110, although this is not shown explicitly in FIG. 1A for reasons of clarity. In this case, an actuator would then be advantageous that mediates a release of the output through the armature 115.
- armature 115 has at least one at least partially round elevation 160 in a bearing section 162, elevation 160 advantageously engaging in a recess 165 or opening that is arranged in a section of a housing 170 of tilting armature valve 100 that is opposite elevation 160.
- the armature 115 can slide in the recess during a movement from the first position 147 to the second position 149 after switching on a current flow through the coil 140 and is at the same time in a fixed position in the housing 170 or in relation to the cover shell 130 held.
- the recess is advantageously trapezoidal in shape, so that there is as little friction as possible when the elevation slides over the surface of the recess 165 is caused.
- the recess 165 can be made of plastic material, for example, and can therefore be produced very easily and inexpensively.
- the spring 120 is designed as a leaf spring and is arranged in the bearing section on a side of the armature 115 opposite the coil 140 .
- the spring 120 serves to press the bearing ball(s) pressed into the armature 115, for example, into the (e.g. trapezoidal) mating shell or recess 165 in the housing 170 of the coil element 110 without play.
- the armature 115 can be fixed by the spring 120 so that the armature 115 is held by the spring 120 in a predetermined position.
- the armature 115 can also be hung on the coil element 110 .
- the spring 120 which is configured as a leaf spring, for example, could then be omitted.
- FIG. 1B shows a cross-sectional view through a toggle armature valve 100 with the armature 115 in the second position 149.
- a current is switched on through the coil 140 and the armature 115 is attracted, so that a magnetic field represented by the field lines 180 builds up.
- the armature 115 can fall back into the first position 147, for example as a result of gravity or a spring force of the restoring spring shown.
- FIG. 2 shows a schematic cross-sectional illustration of an embodiment of an electromagnetic device according to the invention, as can be used, for example, in a tilting armature valve according to FIG. 1 .
- Identical, equivalent or analogous components are denoted in FIGS. 1, 2 and 3 with the same reference symbols.
- the electromagnetic device 105 of FIG. 2 has a coil element 110 in which the preferred Cylindrical magnet core 135 includes a peripheral fastening area 600 which has a tooth-like contour 601 in cross section along the longitudinal axis 137 of the magnet core 135 .
- the magnetic core 135 is surrounded by the coil body 128, which is preferably of rotationally symmetrical design.
- the coil body 128 has a receiving area 142 for receiving at least one coil winding 141 of a coil 140 (not shown explicitly in FIG. 2).
- the circumferential attachment area 600 is preferably formed integrally with the magnetic core 135, but can in principle also be formed and attached separately.
- receiving area 142 is formed by a wall 129, which has a first area 131, which runs in the direction of longitudinal axis 137 of magnetic core 135, a second area 132, which runs transversely (preferably perpendicular) to longitudinal axis 137 of magnetic core 135, and is arranged at a first end of the first area 131, and a third area 133, which also runs transversely (preferably perpendicular) to the longitudinal axis 137 of the magnet core 135 and is arranged at a second end of the first area 131.
- the first area 131 , the second area 132 and the third area 133 of the wall 129 together form a trough-like or, as shown, U-shaped receiving area 142 .
- the coil body 128 has a magnetic core receiving space 143 which is formed by the first area 131 of the wall 129 of the receiving area 142 .
- the magnetic core receiving space 143 is matched to the magnetic core 135 in such a way that the magnetic core 135 can be pressed into the magnetic core receiving space 143 of the coil former 128 .
- the magnetic core accommodating space 143 has a cylindrical shape.
- the receiving area 142 can also be formed by the first area 131 of the wall 129, the second area 132 of the wall 129 and a housing base 173 of the housing 170, with the housing 170 (in particular the magnetic housing) being attached to the second end of the first Area 131 is arranged.
- the housing 170 has a pot-like shape with an inner area 171 which is designed in such a way that the coil body 128 can be pressed into the housing 170 together with the magnetic core 135 .
- the housing 170 has a central opening 172 in a housing base 173, in which the magnetic core 135 is pressed.
- the magnet core 135 can end at or in front of the housing base 173 in the insertion direction in the installed state.
- the housing 170 has a circumferential side wall 174 which extends away from the housing base 173 in the longitudinal direction of the magnetic core 135 and thus delimits the inner region 171 in the radial direction.
- the inner diameter of the inner area 171 is slightly smaller than the outer diameter of the coil body 128, so that when the coil body 128 is pushed into the housing 170, a radial pressure (represented by the pressing force F) is exerted on the coil body 128, in particular on the radial outer ends of the second area 132 and the third portion 133 of the wall 129 of the bobbin 128 is exerted.
- the coil body 128 Due to the radial pressure, an undercut of the coil body 128 behind the peripheral fastening area 600 is additionally supported.
- the coil body can be oversized on the side to be fixed, so that during the subsequent assembly of the housing, radial pressure is exerted on the coil body. This pressing supports the formation of the geometric undercut.
- the magnet core 135 is securely fastened in the coil body 128, so that when the coil body 128 heats up during operation of the electromagnetic device 105, lifting of the coil body 128 from the magnet core 135 can be mechanically avoided.
- the housing 170 is formed in one piece.
- the electromagnetic device 105 heats up due to the heat loss in the coil winding 141, so that the coil body 128 expands. Due to the expansion of the coil body 128, the coil body 128 is supported on the housing 170, which is illustrated by the force arrow F in FIG. That is, the expansion of the bobbin 128 in conjunction with the surrounding or closed housing 170 will counteract the undercutting of the bobbin 128 by the flow property of elastomers of the bobbin material under force strengthened behind the peripheral fastening area 600 and lifting off the magnetic core 135 inhibits thermal expansion, with which the magnetic core 135 is thus securely held in the coil body 128. In principle, however, the magnetic core 135 is held securely in the coil body even without a housing 170 .
- the housing 170 has magnetic material, as is known to those skilled in the art and is described, for example, in DE 10 2016 105 532 A1.
- the circumferential fastening area 600 on the magnet core 135 is arranged on an outer surface of the magnet core 135, so that the circumferential fastening area 600 is in contact with the coil body 128, in particular with a radially inner surface, when the magnet core 135 is pushed into the coil body 128.
- the first region 131 of the wall 129 delimits the magnetic core receiving space 143 in the radial direction in relation to the longitudinal axis 137.
- peripheral fastening area 600 is arranged on magnetic core 135 such that peripheral fastening area 600 is arranged at the level of second area 132 of wall 129 when magnetic core 135 is in its end position in coil body 128, viewed in the longitudinal direction.
- the bobbin 128 is more rigid than at a position in the first area 131 , so that the magnetic core 135 is advantageously fixed in the bobbin 128 .
- the circumferential fastening area 600 is arranged on the magnetic core 135 that in the end position of insertion, the circumferential fastening area 600 is preferably outside of the longitudinal direction
- Receiving area 142 on the bobbin 128, that is outside the area in which the coil 140 can be wound around the bobbin 128, is arranged.
- the peripheral fastening area 600 can alternatively or additionally be arranged in the first area 131 of the wall 129 in the end position of insertion. This also allows the magnetic core 135 to mesh with the bobbin 128 . In a further exemplary embodiment that is not shown, the peripheral fastening area 600 can alternatively or additionally be arranged on the magnetic core 135 in such a way that the peripheral fastening area 600 is arranged opposite the third area 133 of the wall 129 in the end position of insertion. This exemplary embodiment also enables the magnet core 135 to be securely fastened in the coil body 128.
- the magnet core 135 can also have more than one circumferential fastening area 600 which is distributed on the magnet core 135 in the longitudinal direction of the magnet core 135 .
- the three or more fixing circumferential portions may be evenly or irregularly distributed along a length of the magnetic core 135 .
- evenly means that the distance between a first peripheral fastening area and a second peripheral fastening area is exactly the same as the distance between the second peripheral fastening area and a third peripheral fastening area.
- magnet core 135 has a plurality of circumferential fastening regions 600
- a respective extension of fastening region 600 in a direction perpendicular to longitudinal axis 137 of magnet core 135 of the respective tooth-like contour 601 can extend from one of fastening regions 600 to the following one along longitudinal axis 137 of magnet core 135 Fastening areas 600 increase. It is advantageous here that the extension in the direction perpendicular to the longitudinal axis 137 of the magnetic core 135 (height of the elevation) of the fastening regions 600 lying one behind the other increases in the press-in direction, so that essentially the same amount of coil body material always has to be displaced.
- Fig. 3 shows a schematic and enlarged cross-sectional representation (section A) of the peripheral fastening area 600 with the tooth-like contour 601 of the magnetic core 135.
- a first end 602 of the peripheral attachment area 600 is arranged at the top in FIG. 3 .
- the magnet core 135 When the magnet core 135 is pushed into the coil body 128, first insert the first end 602 of the peripheral attachment portion 600 into the spool 128 . This is followed by the tooth-like contour 601, which is described below by way of example.
- the diameter of the magnetic core 135 increases uniformly up to a clamping area (head area) 606 of the circumferential fastening area 600, which has a larger diameter than the diameter of the magnetic core 135 outside of the fastening area 600.
- This constantly increasing diameter of the peripheral fastening area 600 lies in a widening area 604 of the peripheral fastening area 600.
- the widening area 604 has a uniform gradient up to the outer diameter of the clamping area 606.
- An angle ⁇ which is spanned by an extension of the diameter of the magnetic core 135 outside of the fastening area 600 and a slope of the expansion area 604, can have an amount between approximately 1 and 90 degrees, preferably between 10 and 35 degrees.
- Such a configuration of the widening area 604 allows the magnet core 135 to allow the coil body 128 during the pressing-in process so that the coil body material 134 flows around the tooth-like contour 601 and forms an undercut behind the tooth-like contour 601 without the inner diameter being permanently widened or even increased by machining becomes.
- angle ⁇ it is also possible to reduce the assembly force for press-fitting the magnetic core 135 into the coil bobbin 128 and avoid mechanical scraping of coil bobbin material.
- the outer diameter of the clamping area 606 of the peripheral fastening area 600 remains approximately constant for a predetermined longitudinal section of the magnetic core 135 (flattened head area), which advantageously promotes the flow process during pressing. This means that the outer diameter of the clamping area 606 does not change over its length. This is followed by a depression 608 in the insertion direction of the magnetic core 135. This depression 608 can also be referred to as a constriction.
- the recess 608 has a lower Diameter than the diameter of the magnetic core 135 outside of the attachment area 600 and thus also a smaller diameter than the clamping area 606.
- a transition 607 from the clamping area 606 to the depression 608 is arranged in a radial plane.
- the transition 607 preferably leads at a right angle ⁇ from the clamping area 606 to the depression 608 and thus forms the tooth-like contour 601 .
- the tooth-like contour 601 has an angle ( ⁇ ) of at most 90° to the outside of the magnet core 135 outside the peripheral fastening area 600.
- the back of the tooth is sharp-edged with an angle of no more than 90°, so that the undercut can form and wedging occurs when the load is applied in the opposite direction to the assembly direction.
- the transition 607 can be formed in such a way that the angle ⁇ is formed as an acute angle between the clamping area 606 and the transition 607, ie the angle ⁇ has a value of less than 90°.
- the depression 608 is followed by a second end 610 of the circumferential fastening area 600 which has the diameter of the magnet core 135 outside of the fastening area 600 .
- a transition 609 between the depression 608 and the second end 610 of the fastening area 600 is, for example, slightly inclined and forms a steep ramp. In other words, the diameter between the recess 608 and the second end 610 changes over a short length of the magnetic core 135 in the insertion direction.
- the transition 609 can also be formed perpendicular to the longitudinal axis of the magnet core 135 . This means that the magnetic core 135 increases suddenly, ie without a ramp-like transition, from the diameter of the recess 608 to the diameter of the magnetic core 135 .
- An electromagnetic device therefore provides a peripheral fastening area 600 for the magnetic core 135, which is designed in such a way that Bobbin material flows around the tooth-like contour and thus forms an undercut without simply expanding the inside diameter of the bobbin or even increasing it by machining. Furthermore, the connection is supported and securely held in position by the coil body during temperature expansion.
- the invention also enables quick assembly.
- the magnet core can also be insonified via an ultrasonic welding process using an ultrasonic welding system.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Fluid Mechanics (AREA)
- Electromagnets (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280082980.7A CN118402022A (zh) | 2021-12-15 | 2022-12-14 | 电磁设备以及用于制造这样的电磁设备的方法 |
KR1020247023103A KR20240122829A (ko) | 2021-12-15 | 2022-12-14 | 전자기 장치 및 이러한 전자기 장치를 제조하는 방법 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102021133231.1A DE102021133231A1 (de) | 2021-12-15 | 2021-12-15 | Elektromagnetische Vorrichtung, sowie Verfahren zum Herstellen einer solchen elektromagnetischen Vorrichtung |
DE102021133231.1 | 2021-12-15 |
Publications (1)
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WO2023111032A1 true WO2023111032A1 (de) | 2023-06-22 |
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PCT/EP2022/085879 WO2023111032A1 (de) | 2021-12-15 | 2022-12-14 | Elektromagnetische vorrichtung, sowie verfahren zum herstellen einer solchen elektromagnetischen vorrichtung |
Country Status (4)
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KR (1) | KR20240122829A (de) |
CN (1) | CN118402022A (de) |
DE (1) | DE102021133231A1 (de) |
WO (1) | WO2023111032A1 (de) |
Citations (9)
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DE2427201A1 (de) * | 1974-06-05 | 1976-01-02 | Kuhnke Gmbh Kg H | Elektromagnetisch betaetigtes ventil |
DE102005061408A1 (de) * | 2005-12-22 | 2007-06-28 | Robert Bosch Gmbh | Kunststoff-Metall-Verbindung und Brennstoffeinspritzventil mit einer Kraftstoff-Metall-Verbindung |
DE10162754B4 (de) * | 2001-12-20 | 2008-09-11 | Steuerungstechnik Staiger Gmbh & Co. Produktions-Vertriebs-Kg | Ventil |
WO2013064226A2 (en) * | 2011-11-01 | 2013-05-10 | Norgren Gmbh | Solenoid with an over-molded component |
DE102014115206B3 (de) | 2014-10-20 | 2016-02-04 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Kippankerventil für ein Druckregelmodul eines Fahrzeugs und Verfahren zum Betreiben eines Kippankerventils |
DE102014115207A1 (de) | 2014-10-20 | 2016-04-21 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Ventildichteinrichtung für ein Kippankerventil und Verfahren zum Herstellen einer Ventildichteinrichtung für ein Kippankerventil |
EP1966483B1 (de) * | 2005-12-22 | 2017-06-07 | Robert Bosch Gmbh | Elektromagnetisch betätigbares ventil |
DE102016105532A1 (de) | 2016-03-24 | 2017-09-28 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Kippankerventil und Verfahren zur Herstellung desselben |
DE102018123997A1 (de) | 2018-09-28 | 2020-04-02 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Als Baueinheit ausgeführtes elektro-pneumatisches Druckregelmodul mit integriertem Inertialsensor |
Family Cites Families (3)
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DE4122705C1 (de) | 1991-07-09 | 1992-07-30 | Siemens Ag, 8000 Muenchen, De | |
DE102004009157A1 (de) | 2004-02-25 | 2005-09-15 | Nass Magnet Gmbh | Magnetventil |
DE102005061424A1 (de) | 2005-12-22 | 2007-07-05 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
-
2021
- 2021-12-15 DE DE102021133231.1A patent/DE102021133231A1/de active Pending
-
2022
- 2022-12-14 KR KR1020247023103A patent/KR20240122829A/ko unknown
- 2022-12-14 CN CN202280082980.7A patent/CN118402022A/zh active Pending
- 2022-12-14 WO PCT/EP2022/085879 patent/WO2023111032A1/de active Application Filing
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2427201A1 (de) * | 1974-06-05 | 1976-01-02 | Kuhnke Gmbh Kg H | Elektromagnetisch betaetigtes ventil |
DE10162754B4 (de) * | 2001-12-20 | 2008-09-11 | Steuerungstechnik Staiger Gmbh & Co. Produktions-Vertriebs-Kg | Ventil |
DE102005061408A1 (de) * | 2005-12-22 | 2007-06-28 | Robert Bosch Gmbh | Kunststoff-Metall-Verbindung und Brennstoffeinspritzventil mit einer Kraftstoff-Metall-Verbindung |
EP1966483B1 (de) * | 2005-12-22 | 2017-06-07 | Robert Bosch Gmbh | Elektromagnetisch betätigbares ventil |
WO2013064226A2 (en) * | 2011-11-01 | 2013-05-10 | Norgren Gmbh | Solenoid with an over-molded component |
DE102014115206B3 (de) | 2014-10-20 | 2016-02-04 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Kippankerventil für ein Druckregelmodul eines Fahrzeugs und Verfahren zum Betreiben eines Kippankerventils |
DE102014115207A1 (de) | 2014-10-20 | 2016-04-21 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Ventildichteinrichtung für ein Kippankerventil und Verfahren zum Herstellen einer Ventildichteinrichtung für ein Kippankerventil |
DE102016105532A1 (de) | 2016-03-24 | 2017-09-28 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Kippankerventil und Verfahren zur Herstellung desselben |
DE102018123997A1 (de) | 2018-09-28 | 2020-04-02 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Als Baueinheit ausgeführtes elektro-pneumatisches Druckregelmodul mit integriertem Inertialsensor |
Also Published As
Publication number | Publication date |
---|---|
CN118402022A (zh) | 2024-07-26 |
KR20240122829A (ko) | 2024-08-13 |
DE102021133231A1 (de) | 2023-06-15 |
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