EP4352762A1 - Ensemble comportant une bobine et un enroulement pour un actionneur électromagnétique - Google Patents

Ensemble comportant une bobine et un enroulement pour un actionneur électromagnétique

Info

Publication number
EP4352762A1
EP4352762A1 EP22735783.7A EP22735783A EP4352762A1 EP 4352762 A1 EP4352762 A1 EP 4352762A1 EP 22735783 A EP22735783 A EP 22735783A EP 4352762 A1 EP4352762 A1 EP 4352762A1
Authority
EP
European Patent Office
Prior art keywords
coil
bobbin
limbs
flange
assembly
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.)
Pending
Application number
EP22735783.7A
Other languages
German (de)
English (en)
Inventor
Adhish VINOD
Thangavel Erusappan
Renaud CHAM
Fabien GIRON
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.)
Valeo Electrification
Original Assignee
Valeo Systemes de Controle Moteur SAS
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 Valeo Systemes de Controle Moteur SAS filed Critical Valeo Systemes de Controle Moteur SAS
Publication of EP4352762A1 publication Critical patent/EP4352762A1/fr
Pending legal-status Critical Current

Links

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F02M25/0836—Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/029—Electromagnetically actuated valves
    • 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
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves
    • F16K31/0658—Armature and valve member being one single element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires
    • H01F27/2828—Construction of conductive connections, of leads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F02M2025/0845—Electromagnetic valves
    • 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
    • H01F2007/062—Details of terminals or connectors for electromagnets

Definitions

  • the present invention in general relates to an electromagnetic actuator and in particular to an assembly for an electromagnetic actuator.
  • a bobbin In general, a bobbin is used to house a coil.
  • the bobbin has a tubular body with or without flanges on both the sides of the body. A pair of limbs are attached to base of one of the flanges.
  • the coil has two ends, one end entering the bobbin housing through a limb and after completion of winding the other end is configured to exit the bobbin. The exit end of the coil is not well supported, thus causing tension in the coil. Therefore, the coil unwinds causing difficulties at the time of assembling.
  • an assembly comprising a bobbin and a coil arranged on the bobbin for an electromagnetic actuator system in an automobile.
  • the bobbin having at least one flange and at least a pair of limbs attached to one of the at least one flange to support coil ends entering and exiting onto the bobbin.
  • the at least one flange comprising at least one guiding member to guide the coil from the at least one flange or to the limbs.
  • the guiding member includes a slope portion, extending from the at least one flange to one of the limbs, for supporting the coil and a side portion, wherein the coil is in contact with the slope portion and the side portion.
  • each of the at least a pair of limbs comprises, an enclosing member disposed along the length of the each of the at least a pair of limbs, to securely guide the coil ends entering and exiting the bobbin.
  • the side portion is wedge shaped, pyramidal or conical, with a base of the side portion proximal to the one of the at least one pair of limbs.
  • the guiding member is formed on the flange on the exit end of the coil.
  • the guiding members formed on the flange on the exit end of the coil and entry end of the coil.
  • the height of one end of the slope portion adjacent to the flange is in the range of 1 to 1.2 mm and the height of other end of the slope portion adjacent to one of the at least a pair of limbs is in the range of 0.4 to 0.5 mm.
  • length of the enclosing member along an axis A is in the range of 7 to 12 mm.
  • width of the enclosing member perpendicular to the axis A is in the range of 0.5 to 0.9 mm.
  • the bobbin is injection moulded along with guiding member.
  • a solenoid valve for guiding of fuel vapours in an automobile is provided in several embodiments.
  • a housing wherein the housing having a fluid inlet opening and a fluid outlet opening is provided.
  • An assembly according to the aforementioned assembly is assembled.
  • a seat wherein the seat is adjacent to one end of a magnetic core of the bobbin, and along an axis of the magnetic core between a first position for opening and a second position for closing the fluid outlet opening is provided.
  • FIG. 1 A depicts a bobbin housing a coil according to the invention
  • FIG. IB shows a guiding member
  • FIG. 1C represents the enclosing member
  • FIG. ID depicts a bobbin with housing for a coil according to a variant of the invention
  • FIG. 2 depicts a longitudinal sectional view of a canister purge valve with the bobbin according to the invention.
  • the invention in its various embodiments discloses an assembly 10 with a bobbin 100, and a coil 101 arranged on the bobbin 100, for an electromagnetic actuator system in an automobile.
  • the bobbin 100 is provided with at least one flange 103.
  • the bobbin 100 is further provided with at least a pair of limbs 105, attached to one of the at least one flange 103, to support ends 101a, 101b of the coil 101 entering and exiting the bobbin 100, as shown in FIG. 1A.
  • the bobbin 100 includes a body along axis A of the assembly to house the coil 101.
  • the bobbin 100 is provided with a pair of support flanges 103 arranged on both ends of the body perpendicular to axis A of the bobbin 100.
  • the bobbin 100 has a pair of limbs 105 formed on flange 103, as illustrated in FIG. 1A.
  • at least one flange 103 is provided with a guiding member 110, to guide the coil 101.
  • the guiding member 110 is extended from the at least one flange 103 or the guiding member is extended to the limbs 105.
  • the guiding member 110 is disposed between the flange 103 adjacent to the limbs 105. In other words, the guiding member 110 extends from one side of the flange 103 and ends adjacent to the limbs 105.
  • the guiding member 110 is formed on the flange 103 on exit end of the coil 101b or on both coil entry and exit ends of the coil 101a, 101b.
  • the guiding member 110 is sensibly in the plan of the flange 103.
  • the guiding member 110 includes a slope portion 113, that is designed to extend from the at least one flange 103 to one of the limbs 105.
  • the slope portion 113 is provided for supporting the coil 101, in a direction along an axis A of the bobbin 100.
  • a side portion 111 is disposed on the guiding member 110.
  • the slope portion 113 provided on the guiding member 110 is designed in a way that it inclines from one end of the flange 103 to the limbs 105.
  • the side portion 111 is formed on the slope portion 113.
  • the side portion 111 is provided as a protrusion, to enable shifting of direction of the coil 101. Furthermore, the side portion 111 is provided to offer support to the coil 101.
  • the slope portion 113 conveniently accommodates the coil 101, providing sufficient support and guidance.
  • the guiding member 110 is thus fabricated to facilitate, support and route the coil 101 from the flange 103 towards one of the limbs 105.
  • the guiding member 110 is as shown in FIGs. 1 A to IB.
  • the side portion 111 is a wedge-shaped member, a pyramidal, or a conical shaped member as shown in FIGs. 1A to IB.
  • the side portion 111 is designed to have a variable width profile with a wider end of the side portion 111 facing the limbs and an other end of the side portion 111 adjacent the flange 103.
  • the sharp edge of the side portion 111 is designed to face or extend from the flange 103.
  • the flat surface of the side portion 111 is designed to face or extend towards the limbs 105.
  • the slope portion 113 is designed to have a variable height profile.
  • the height of one end of the slope portion 113 adjacent to the flange 103 is in the range of 1 to 1.2 mm.
  • the height of other end of the slope portion 113 adjacent to one of the at least a pair of limbs 105 is in the range of 0.4 to 0.5 mm.
  • the at least a pair of limbs 105 comprise an enclosing member 107 thereby forming a channel as shown in FIG. 1A.
  • the enclosing member 107 is disposed along the length of the limbs 105 to cover and safeguard the coil ends 101a, 101b entering and exiting the bobbin 100.
  • the enclosing member 107 is disposed along the height or length of the limbs 105.
  • the length or height along axis A of the bobbin 100 is in the range of 7 to 12 mm.
  • the length or height of the bobbin 100 is preferably 9 mm.
  • breadth of the enclosing member 107 is in the range of 0.5 to 0.9 mm.
  • the breadth of the enclosing member 107 is preferably 0.7 mm.
  • the thickness of the enclosing member 107 is in the range of 0.2 to 0.5 mm.
  • the length, breadth and thickness of the enclosing member 107 is not restricted to the aforementioned ranges.
  • the enclosing member 107 is disposed on the limbs 105 of the bobbin 100 to form a channel.
  • the enclosing member 107 is formed on both the limbs 105.
  • the enclosing member 107 is formed on the side of the limb facing the other limb in a way that the enclosing member 107 is parallel to the other limb and to the enclosing member 107 on the other limb.
  • the enclosing member 107 is an elongated member formed along the axis A of the bobbin. The enclosing member 107 follows the profile of the limbs as shown in FIG. 1A.
  • An end of the enclosing member 107 away from the flange 103 is curved over each of the at least a pair of limbs 105 forming an acute angle with the limbs 105.
  • the enclosing member 107 after separation from the limbs 105 is represented in FIG. 1C.
  • the enclosing member is formed only along one limb of the pair of limbs 105.
  • a coil 101 is fixed to a lead frame 109 on one end that is entry end 101a of the coil 101, and is allowed to enter the bobbin 100 through one of the pair of limbs 105.
  • the coil 101 enters the body through the limbs 105 and flange 103, to be housed on the body of the bobbin 100, as aforementioned in previous embodiments.
  • the guiding member 110 on the exit end guides the coil 101b out of the bobbin 100.
  • the coil 101 shifts the direction due to the side portion 111 that protrudes and the coil 101 rests sufficiently on the side portion 111 and inclines down to the limbs 105.
  • the coil 101 from the exit end is securely guided by the guiding member 110 and is fed into the channel formed by limbs 105 and enclosing member 107 and exits the limbs 105 and is fixed to the lead frame 109 on the other side.
  • one end of the bobbin 100 is supported.
  • the guiding member 110 is formed on both ends of the coil on the flange 103 (not shown in Figures).
  • a guiding member 110 is provided on the coil exit end to guide the coil towards the axis A. Further, a guiding member 110 is provided on the entry end to guide the coil 101 away from the axis A.
  • material of the bobbin 100 is selected from a group of materials containing a polymer or a metal.
  • the polymer is selected from one of thermoplastics or thermosetting plastics.
  • PA6 GF35 polyamide 6 reinforced with 35 % glass fibre
  • the material of the assembly is not restricted to the aforementioned materials.
  • the mould is fabricated based on desired bobbin design.
  • the material of the bobbin 100 is selected from aforementioned materials to obtain the bobbin 100.
  • the material is injected into the mould to obtain the bobbin 100.
  • the bobbin 100 along with the guiding member 110 is made by injection moulding process.
  • the base portion 111 is inclined axially or in the direction of the axis A of the bobbin 100, on one of a pair of flanges 103.
  • FIG. ID shows a variant of the bobbin realization.
  • the coil is not shown.
  • the main difference with the previous mode of realization is at the junction between the flange 103’ and the pair of limbs 105’.
  • the guiding member 110’ is not sensibly in the plan of the flange 103’ but sloped between the flange 103’ and the pair of limbs 105’.
  • the elements with the same numerical references being identical, their functions will not be repeated here.
  • the invention in its several embodiments provide a solenoid valve 200 for guiding of fuel vapours in an automobile and more particularly a canister purge valve (CPV) as illustrated in FIG.2.
  • the solenoid valve 200 includes a housing 201.
  • the housing 201 is provided with a fluid inlet opening 202 and a fluid outlet opening 204.
  • Assembly 10 that comprises a bobbin 100 and a coil 101 as aforementioned is provided in the housing 201.
  • the assembly 10 comprising a bobbin 100 and a coil 101 arranged on the bobbin 100.
  • a magnetic core 208 is provided along the bobbin 100.
  • a seat 206 which is adjacent to one end of the magnetic core 208 of the bobbin 100 and along an axis X of the magnetic core 208, is disposed.
  • the seat 206 is disposed between a first position for opening and a second position closing the fluid outlet opening 204.
  • the solenoid valve 200 is an electromagnetic device as disclosed in WO2019243611A1.
  • the device 200 is provided with a fuel vapour inlet duct 202 that is connected to a circulation duct to receive fuel vapours discharged from a fuel tank, and a fuel vapour outlet duct 204.
  • An element 210 that is movable under the electromagnetic effect of the coil 101, is disposed along the axis X of the device 200.
  • This movable element is in the form of a piston 210, made of a ferromagnetic material.
  • the piston 210 is movable axially along the axis X inside the magnetic core 208.
  • the piston 210 is configured to move and exert pressure against a valve seat 206, through which fuel vapours circulate when the device 200 is open.
  • the fuel vapours enter the device 200 through the inlet duct 202 provided, and the fuel vapours exit the device 200, through the valve seat 206 and further through the outlet duct 204 provided.
  • the assembly 10 with the bobbin 100 may be formed without flanges 103.
  • the guiding member 110 is formed on the body of the bobbin 100 (not shown in the figures).
  • the bobbin has no limbs 105, the guiding member 110 is attached to the flange 103 and end coils are directly clamped to the lead frame 109 which may be directly attached to any part of the bobbin 100 and specifically to the flange.
  • the coil 101 entering and exiting the bobbin 100 is enclosed securely and is further guided in and out of the bobbin 100.
  • the coil 101 which is exposed previously is now sealed from the environment by the enclosing member 107, which further prevents unwinding of the coil 101 thereby preventing slipping of the coil 101 from the limbs 105.
  • the coil 101 is made of a conductive material.
  • the coil 101 material is preferably copper.
  • the coil 101 is preferably insulated, and an enameled copper wire is used.
  • the material of the coil 101 is not restricted to enameled copper coil.
  • the bobbin 100 with the guiding member 110 and the enclosing member 107 secures and guides the coil 101 during assembly. Thereby, resulting in reduced assembly time, as the assembly 10 with the bobbin 100, avoids unwinding of the coil. Further tension experienced by the coil at the exit end of the coil 101b is reduced due to the side wall 111 and slope portion 113 of the guiding member 110.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnets (AREA)

Abstract

L'invention concerne un ensemble comprenant une bobine (100) et un enroulement (101) disposé sur la bobine (100), pour un système d'actionneur électromagnétique dans une automobile. Un élément de guidage est fixé à l'une des brides (103) de la bobine (100). L'élément de guidage (110) est conçu pour guider l'enroulement à partir de la ou des brides (103) ou vers les membres (105). L'élément de guidage (110) comprend une partie pente (113), qui s'étend à partir de la ou des brides (103) vers l'un des membres (105) et une partie latérale (111). La partie latérale (111) est formée en tant que saillie pour changer la direction de l'enroulement (101) et pour faciliter le support à l'enroulement (101). Par conséquent, l'élément de guidage (110) facilite le support et achemine l'enroulement (101) de la bride (103) vers l'un des membres (105).
EP22735783.7A 2021-06-09 2022-06-07 Ensemble comportant une bobine et un enroulement pour un actionneur électromagnétique Pending EP4352762A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202141025617 2021-06-09
PCT/EP2022/065438 WO2022258636A1 (fr) 2021-06-09 2022-06-07 Ensemble comportant une bobine et un enroulement pour un actionneur électromagnétique

Publications (1)

Publication Number Publication Date
EP4352762A1 true EP4352762A1 (fr) 2024-04-17

Family

ID=82358529

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22735783.7A Pending EP4352762A1 (fr) 2021-06-09 2022-06-07 Ensemble comportant une bobine et un enroulement pour un actionneur électromagnétique

Country Status (2)

Country Link
EP (1) EP4352762A1 (fr)
WO (1) WO2022258636A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10014738A1 (de) * 2000-03-24 2001-10-11 Bosch Gmbh Robert Elektrische Spule, insbesondere für Magnetventile
JP6668726B2 (ja) * 2015-12-10 2020-03-18 株式会社デンソー 電磁弁
JP6677059B2 (ja) * 2016-04-20 2020-04-08 スミダコーポレーション株式会社 コイル部品およびコイル部品の製造方法
FR3082992B1 (fr) 2018-06-22 2023-06-30 Valeo Systemes De Controle Moteur Dispositif electromagnetique comportant un conduit de sortie de vapeur dispose dans un boitier intermediaire

Also Published As

Publication number Publication date
WO2022258636A1 (fr) 2022-12-15

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