CN101399136A - Magnet switch with magnetic core designed to ensure stability in operation thereof - Google Patents

Magnet switch with magnetic core designed to ensure stability in operation thereof Download PDF

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Publication number
CN101399136A
CN101399136A CNA2008101349777A CN200810134977A CN101399136A CN 101399136 A CN101399136 A CN 101399136A CN A2008101349777 A CNA2008101349777 A CN A2008101349777A CN 200810134977 A CN200810134977 A CN 200810134977A CN 101399136 A CN101399136 A CN 101399136A
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CN
China
Prior art keywords
annular slab
dish assembly
core
slab member
core body
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Granted
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CNA2008101349777A
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Chinese (zh)
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CN101399136B (en
Inventor
宇佐见伸二
寺町智博
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Denso Corp
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Denso Corp
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Priority claimed from JP2007293545A external-priority patent/JP4548474B2/en
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Publication of CN101399136B publication Critical patent/CN101399136B/en
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Abstract

A magnet switch which may be employed in automotive engine starters is provided. The magnet switch includes a stationary magnetic core made up of a disc assembly and a core body. The disc assembly is made of a stack of annular plate members superposed on each other. Each of the plate members has an opening through which a terminal lead of a magnetic coil extends. The core body has a boss with an edge which is plastically deformed outwardly in the radius direction thereof or staked to create an elastic nip which retains the stack of the plate members firmly on the core body. This structure ensures the joint between the disc assemblyand the core body to withstand mechanical impact exerted on the magnetic core and stability in operation of the magnet switch without increasing a total production cost of the magnetic switch.

Description

Be designed to guarantee the electromagnetic switch that has magnetic core of its operational stability
Technical field
Present invention relates in general to a kind of electromagnetic switch, it can be used for the engine primer of work with the explosive motor of starter motor motor vehicle, and relate more specifically to the improvement structure of this electromagnetic switch, it is designed to the impact load that takes place during solenoid operated is had the tolerance of improvement, simultaneously do not increase production cost.
Background technology
The domestic patent application of PCT day translation No.2002-524826 teaching a kind of electromagnetic switch, it is equipped with dish assembly 110 as shown in Figure 20, and cylindrical shape core body 100 that this dish assembly is provided with by aliging with plunger (being removable core) and stacked ring segment 111 are made.Cylindrical shape core body 100 is engaged in the centre bore 112 of dish assembly 110.The terminal lead of solenoid extends axially along electromagnetic switch, passes the groove that is formed at dish assembly 110 peripheries.Outmost one has small pieces 400 in the ring segment of dish assembly 110, and small pieces 400 form by the part of cutting and crooked outermost annular sheet, are used for the terminal lead of hold-in winding.
But said structure has following shortcoming.Dish assembly 110 is installed in the recess that needs on the cylindrical shape core body 100 being formed in ring segment 111 peripheries, and---groove that the terminal lead of described recess qualification coil extends through---aligns.Especially in turn alignment recess, thus when assembly 110 is installed on the core body 100 recess is overlapped each other will coiling.Alternatively, must align the recess of ring segment 111 to make stacked ring segment and then stacked ring segment being engaged on the core body 100.But, be the workman who very bothers and need be skilled in technique like this.
In addition, small pieces 400 overslaughs that are formed on the sheet of outermost that coils assembly 110 are soldered to dish assembly 110 with end winding, thereby cause its machinability to reduce.
In addition, when coil electricity and plunger strikes core body 100, can cause impact is passed to the lip-deep end of the sheet that is soldered to the dish assembly of coil.Therefore, the small pieces 400 in the dish component design form and can withstand shocks.This has caused increasing the production cost of electromagnetic switch.
As can be seen from the figure, core body 100 is made up of base 101 and protuberance 102.Base 101 is facing to plunger.Protuberance 102 extends away from plunger from base.
When solenoid repeatedly is switched on or switched off, may cause protuberance 102 to skid off from centre bore 112.Specifically, when the sheet 111 of dish assembly 110 all is stamped into the formation circular hole---described circular hole limits centre bore 112, may cause the internal diameter difference between a plurality of 111, the distortion of circular hole shape or the deficiency of circular hole share zone, this causes the deficiency of the degree that is press-fitted of protuberance 102 and dish assembly 110 centre bores 112.Therefore, when plunger was attracted to base 101, the reaction force or the pressure that are produced by the driving spring that is installed in the plunger can spur plunger so that protuberance 102 is removed from dish assembly 110.
Summary of the invention
Therefore, main purpose of the present invention is to avoid the shortcoming of prior art.
Another object of the present invention provides a kind of improved structure of electromagnetic switch, described electromagnetic switch design becomes to have the resistance to impact of enhancing and its manufacture process complicated, and/or guaranteed the stability of the combination between the core body of dish assembly and fixed magnetic core.
According to an aspect of the present invention, provide a kind of electromagnetic switch that is installed in the starter that is used for explosive motor.Described electromagnetic switch comprises: (a) switch cover wherein is formed with the contact chamber; (b) fixed contact, it places in the described switch cover; (c) movable contact, it places in the described switch cover; (d) bobbin; (e) removable core, it can move along given mobile route; (f) fixing core, it comprises dish assembly and cylindrical shape core body, described dish assembly is formed with between the end and described switch cover that is engaged in the mating holes on the described cylindrical shape core body and places described bobbin, thereby makes in its opposed major surfaces one towards described removable core; (g) coil, it twines around described bobbin, and when excitation, described coil produces magnetic force moving described removable core along described given mobile route by described fixedly core, thereby makes the described fixed contact of described movable contact butt; And (h) containment member, remain between another and the described switch cover in the opposed major surfaces of described dish assembly the end butt of itself and described switch cover.
Described dish assembly is by forming along its thickness direction stacked annular slab member stacked on top of each other, and each described annular slab all has opening, and the terminal lead of described coil passes described opening and extends.Described annular slab member is divided into first group and second group, described first group of at least one that comprises in the described annular slab member, described second group of described annular slab member that comprises other, described second group annular slab member has embossing projection outstanding along its thickness direction and that be fitted to each other, in the described first group annular slab member at least one has the hole, and one embossing projection in the described second group annular slab member is matched with in the described hole.
Therefore especially, the embossing projection is fitted to each other, and maintains the annular slab member and makes it can be along not rotating in a circumferential direction, and be convenient in the process of manufacturing dish assembly alignment or overlap the opening of annular slab member.The embossing projection also is convenient to the assembling of annular slab member, and this has guaranteed the combination stability of dish assembly and magnetic core core body, and has improved the tolerance to the impact that is input to magnetic core during solenoid operated.
In optimal way of the present invention, each described annular slab member all has two embossing projections radially relative each other with respect to the center of described annular slab member.
Second group of annular slab member all has the recess that is formed on one of embossing projection downside, thereby make that each in the described projection all is engaged in one of described recess in the mode of contact Face to face between two adjacent annular slab members, thereby the ability of improvement dish assembly withstand shock.
According to a second aspect of the invention, provide a kind of electromagnetic switch, it comprises: (a) switch cover wherein is formed with the contact chamber; (b) fixed contact, it places described switch cover inside; (c) movable contact, it places described switch cover inside; (d) bobbin; (e) removable core, it can move along given mobile route; (f) fixing core, it comprises dish assembly and cylindrical shape core body, described cylindrical shape core body has relative end, outer shoulder and extends in described outer shoulder and the described opposite end in the face of the periphery wall between that of described movable contact, described dish assembly places between the end and described switch cover of described bobbin, thereby makes in its opposed major surfaces one towards described removable core; (g) coil, it twines around described bobbin, when excitation, described coil produces magnetic force moving described removable core along described given mobile route by described fixedly core, thereby makes the described fixed contact of described movable contact butt or move away described fixed contact; And (h) containment member, remain between another and the described switch cover in the opposed major surfaces of described dish assembly the end butt of itself and described switch cover.
Described dish assembly is by forming along its thickness direction stacked annular slab member stacked on top of each other, and has the mating holes that runs through described folded thickness.Each described annular slab member all has opening, and the terminal lead of described coil passes described opening and extends.Each described annular slab member all has the hole of the mating holes that limits described dish assembly.Described dish assembly is engaged on the periphery wall of described cylindrical shape core body in described mating holes place.Described annular slab member is divided into first group and second group, described first group of at least one that comprises in the described annular slab member, described second group of described annular slab member that comprises disposed adjacent one another other.Described first group is provided with that face described movable contact in the described opposed major surfaces.And described second group be provided with in the described opposed major surfaces another.In the opposite end of described cylindrical shape core body in the face of that edge of described movable contact along the plastic deformation radially outward of described cylindrical shape core body to form elastic clip, described elastic clip remains on the stacked annular slab member of described dish assembly between the outer shoulder of described edge and described cylindrical shape core body.At least one periphery in its hole in the described first group annular slab member is formed with recess, the plastic deformation edge of that in the opposite end of described cylindrical shape core body places described recess, make that the edge of plastic deformation is not outstanding from the end surfaces of dish assembly, therefore avoided being applied near the containment member that is positioned at the dish assembly, thereby tired or any fault of containment member is minimized owing to be input to the impact of dish assembly or mechanical stress that vibration causes.
In preferred implementation of the present invention, the thickness of at least one in described first group of annular slab member greater than described second group of annular slab member to strengthen the rigidity of described dish assembly.
Described second group of annular slab member has the embossing projection, and described second group annular slab member has embossing projection outstanding along its thickness direction and that be fitted to each other.In the described first group annular slab member at least one has the hole, and one embossing projection in the described second group annular slab member is matched with in this hole.
According to a third aspect of the invention we, provide a kind of electromagnetic switch, it comprises: (a) switch cover wherein is formed with the contact chamber; (b) fixed contact, it places described switch cover inside; (c) movable contact, it places described switch cover inside; (d) bobbin; (e) removable core, it can move along given mobile route; (f) fixing core, it comprises dish assembly and cylindrical shape core body, described dish assembly is formed with between the end and described switch cover that is engaged in the mating holes on the described cylindrical shape core body and places described bobbin, thereby makes in its opposed major surfaces one towards described removable core; (g) coil, it twines around described bobbin, when excitation, described coil produces magnetic force moving described removable core along described given mobile route by described fixedly core, thereby makes the described fixed contact of described movable contact butt or move away described fixed contact; And (h) containment member, remain between another and the described switch cover in the opposed major surfaces of described dish assembly the end butt of itself and described switch cover.
Described dish assembly is by forming along its thickness direction stacked annular slab member stacked on top of each other.Each described annular slab all has opening, and the terminal lead of described coil passes described opening and extends.Described annular slab member all has embossing projection outstanding along its thickness direction and that be fitted to each other.Described containment member has the hole, and the embossing projection of an adjacent annular slab member places this hole.Alternatively, described embossing projection can be oppositely towards, promptly outstanding towards the end of bobbin.In this case, the end of bobbin has hole I, and the embossing projection of an adjacent annular board member places described hole I.
According to a forth aspect of the invention, provide a kind of electromagnetic switch, it comprises: (a) switch cover wherein is formed with the contact chamber; (b) fixed contact, it places described switch cover inside; (c) movable contact, it places described switch cover inside; (d) bobbin; (e) removable core, it can move along given mobile route; (f) fixing core, it comprises dish assembly and cylindrical shape core body, described cylindrical shape core body has relative end, outer shoulder and extends in described outer shoulder and the described opposite end in the face of the periphery wall between that of described movable contact, described dish assembly places between the end and described switch cover of described bobbin, thereby makes in its opposed major surfaces one towards described removable core; (g) coil, it twines around described bobbin, when excitation, described coil produces magnetic force moving described removable core along described given mobile route by described fixedly core, thereby makes the described fixed contact of described movable contact butt or move away described fixed contact; And (h) containment member, remain between another and the described switch cover in the opposed major surfaces of described dish assembly the end butt of itself and described switch cover, described containment member has through hole, and that in the opposite end of described cylindrical shape core body places described through hole.
Described dish assembly is by forming along its thickness direction stacked annular slab member stacked on top of each other, and has the mating holes that runs through described folded thickness.Each described annular slab member all has opening, and the terminal lead of described coil passes described opening and extends.Each described annular slab member all has the hole of the mating holes that limits described dish assembly.Described dish assembly is engaged on the periphery wall of described cylindrical shape core body in described mating holes place.In the opposite end of described cylindrical shape core body in the face of that edge of described movable contact along the plastic deformation radially outward of described cylindrical shape core body to form elastic clip, described elastic clip remains on the stacked annular slab member of described dish assembly between the outer shoulder of described edge and described cylindrical shape core body.Described sealing plate member is formed with recess in the periphery of its through hole, the plastic deformation edge of that in the opposite end of described cylindrical shape core body places described recess.
According to a fifth aspect of the invention, provide a kind of electromagnetic switch, it comprises: (a) switch cover wherein is formed with the contact chamber; (b) fixed contact, it places described switch cover inside; (c) movable contact, it places described switch cover inside; (d) bobbin; (e) removable core, it can move along given mobile route; (f) fixing core, it comprises dish assembly and cylindrical shape core body, described cylindrical shape core body has relative end and peripheral wall portions, one in the described relative end in the face of described removable core, described peripheral wall portions is extended another in described relative end, described dish assembly places between the end and described switch cover of described bobbin, thereby makes in its opposed major surfaces one towards described removable core; (g) coil, it twines around described bobbin, when excitation, described coil produces magnetic force moving described removable core along described given mobile route by described fixedly core, thereby makes the described fixed contact of described movable contact butt or move away described fixed contact; And (h) containment member, remain between another and the described switch cover in the opposed major surfaces of described dish assembly the end butt of itself and described switch cover.
Wherein said dish assembly is by forming along its thickness direction stacked annular slab member stacked on top of each other, and has the mating holes that runs through described folded thickness.Each described annular slab member all has the hole of the mating holes that limits described dish assembly, and described dish assembly is engaged on the peripheral wall portions of described cylindrical shape core body.In the face of the thickness of the outermost annular slab member of described movable contact thickness, therefore guaranteed to bear the required rigidity of the distortion of dish assembly and avoided the distortion of outermost board member in the described dish assembly greater than other annular slab member.
In the preferred mode of the present invention, the thickness of a described outermost annular slab member is bigger two times to five times than other annular slab member thickness.
Described cylindrical shape core body has relative end, outer shoulder and extends in described outer shoulder and the described opposite end in the face of the periphery wall between that of described movable contact, and plastically riveted is to form elastic clip in the face of that at least a portion at edge of described movable contact in the opposite end of described cylindrical shape core body, and described elastic clip remains on the stacked annular slab member of described dish assembly between the outer shoulder of described edge and described cylindrical shape core body.
That edge in the face of described movable contact in the opposite end of described cylindrical shape core body has small pieces, plastically riveted is to form elastic clip for described small pieces, and described elastic clip remains on the stacked annular slab member of described dish assembly between the outer shoulder of described edge and described cylindrical shape core body.
According to the 6th execution mode of the present invention, a kind of electromagnetic switch is provided, it comprises: (a) fixing core; (b) removable core; And (c) solenoid, it produces magnetic attraction by described fixedly core when excitation, thereby described removable core is attracted to one of connection electric contact or breaks electrical contacts along given mobile route.
Described fixedly core comprises dish assembly and core body, described core body have relative end, base, protuberance and be formed on described base and described protuberance between outer shoulder.Described base has an end, and this end is in the face of an end of described fixedly core in the described relative end.Described protuberance has an end, and this end is to stride across the other end that described base deviates from described removable core in the described relative end.Described dish assembly is by forming along its thickness direction stacked annular slab member stacked on top of each other, and has the mating holes that runs through described folded thickness.Each described annular slab member all has circular centre bore, and the centre bore of described circle limits the mating holes of described dish assembly.Described dish assembly is engaged on the described protuberance in described mating holes place.At least a portion at the edge of the end of described protuberance along the plastic deformation radially outward of described protuberance to form elastic clip, described elastic clip remains on the stacked annular slab member of described dish assembly between the outer shoulder of described edge and described core body, has therefore guaranteed the stability of the combination between dish assembly and the core body---and be the operational stability of electromagnetic switch.
In preferred implementation of the present invention, the having to press on the inner periphery in heart hole therein away from an outermost annular slab member of described base of described dish assembly fallen into, and described pressure falls into owing to the centre bore of going out described circle along thickness direction in stacked annular slab member forms.The pressure of the described outermost annular construction member of plastic deformation edge butt of the end of described protuberance falls into, therefore guaranteed the combination stability between dish assembly and the core body, even under the situation of internal diameter change, distortion or the share zone deficiency of the centre bore of board member, also be like this.
Optionally, an outermost annular slab member away from described base of described dish assembly has the surface that is formed on the chamfering on its centre bore inner periphery.The chamfer surface of the described outermost annular slab member of plastic deformation edge butt of the end of described protuberance, therefore guaranteed the combination stability between dish assembly and the core body, even under the situation of internal diameter change, distortion or the share zone deficiency of the centre bore of board member, also be like this.
According to a seventh aspect of the invention, provide a kind of electromagnetic switch, it comprises: (a) fixing core; (b) removable core; And (c) solenoid, it produces magnetic attraction by described fixedly core when excitation, thereby described removable core is attracted to one of connection electric contact or breaks electrical contacts along given mobile route.
Described fixedly core comprises dish assembly and core body.Described core body have relative end, base, protuberance and be formed on described base and described protuberance between outer shoulder.Described base has an end, and this end is in the face of an end of described fixedly core in the described relative end.Described protuberance has an end, and this end is to stride across the other end that described base deviates from described removable core in the described relative end.Described dish assembly is by forming along its thickness direction stacked annular slab member stacked on top of each other, and has the mating holes that runs through described folded thickness.Each described annular slab member all has circular centre bore, and the centre bore of described circle limits the mating holes of described dish assembly.Described dish assembly is engaged on the described protuberance in described mating holes place.The shoulder outside described of described protuberance and the length between its end are greater than the thickness of described dish assembly.At least a portion at the edge of the end of described protuberance along the plastic deformation radially outward of described protuberance to form elastic clip, described elastic clip remains on the stacked annular slab member of described dish assembly between the outer shoulder of at least a portion at described edge and described core body, has therefore guaranteed the stability of the combination between dish assembly and the core body---and be the operational stability of electromagnetic switch.
In optimal way of the present invention, the having to press on the inner periphery in heart hole therein away from an outermost annular slab member of described base of described dish assembly fallen into, and described pressure falls into owing to the centre bore of going out described circle along thickness direction in stacked annular slab member forms.The pressure of the described outermost annular construction member of plastic deformation part butt at the edge of the end of described protuberance falls into, therefore guaranteed the combination stability between dish assembly and the core body, even under the situation of internal diameter change, distortion or the share zone deficiency of the centre bore of board member, also be like this.
Alternatively, an outermost annular slab member away from described base of described dish assembly has the surface that is formed on the chamfering on its centre bore inner periphery, and the chamfer surface of the described outermost annular slab member of plastic deformation part butt at the edge of the end of described protuberance, therefore guaranteed the combination stability between dish assembly and the core body, even under the situation of internal diameter change, distortion or the share zone deficiency of the centre bore of board member, also be like this.
According to an eighth aspect of the invention, provide a kind of electromagnetic switch, it comprises: (a) fixing core; (b) removable core; And (c) solenoid, it produces magnetic attraction by described fixedly core when excitation, thereby described removable core is attracted to one of connection electric contact or breaks electrical contacts along given mobile route.
Described fixedly core comprises dish assembly and core body.Described core body have relative end, base, protuberance and be formed on described base and described protuberance between outer shoulder.Described base has an end, and this end is in the face of an end of described fixedly core in the described relative end.Described protuberance has an end, and this end is to stride across the other end that described base deviates from described removable core in the described relative end.Described dish assembly is by forming along its thickness direction stacked annular slab member stacked on top of each other, and has the mating holes that runs through described folded thickness.Each described annular slab member all has circular centre bore, and the centre bore of described circle limits the mating holes of described dish assembly.Described dish assembly is engaged on the described protuberance in described mating holes place.The having to press on the inner periphery in heart hole therein away from an outermost annular slab member of described base of described dish assembly fallen into, and described pressure falls into owing to the centre bore of going out described circle along thickness direction in stacked annular slab member forms.At least a portion at the edge of the end of described protuberance is along the plastic deformation radially outward of described protuberance, make the pressure of the described outermost annular slab member of plastic deformation part butt at described edge fall into, thereby the formation elastic clip, described elastic clip remains on the stacked annular slab member of described dish assembly between the outer shoulder of the plastic deformation part at described edge and described core body.This has guaranteed the combination stability between dish assembly and the core body, even also be like this under the situation of internal diameter change, distortion or the share zone deficiency of the centre bore of board member.
According to a ninth aspect of the invention, provide a kind of electromagnetic switch, it comprises: (a) fixing core; (b) removable core; And (c) solenoid, it produces magnetic attraction by described fixedly core when excitation, thereby described removable core is attracted to one of connection electric contact or breaks electrical contacts along given mobile route.
Described fixedly core comprises dish assembly and core body, described core body have relative end, base, protuberance and be formed on described base and described protuberance between outer shoulder.Described base has an end, and this end is in the face of an end of described fixedly core in the described relative end.Described protuberance has an end, and this end is to stride across the other end that described base deviates from described removable core in the described relative end.Described dish assembly is by forming along its thickness direction stacked annular slab member stacked on top of each other, and has the mating holes that runs through described folded thickness.Each described annular slab member all has circular centre bore, and the centre bore of described circle limits the mating holes of described dish assembly.Described dish assembly is engaged on the described protuberance in described mating holes place.An outermost annular slab member away from described base of described dish assembly has the surface that is formed on the chamfering on its centre bore inner periphery.At least a portion at the edge of the end of described protuberance is along the plastic deformation radially outward of described protuberance, make the chamfer surface of the described outermost annular slab member of plastic deformation part butt at described edge, thereby the formation elastic clip, described elastic clip remains on the stacked annular slab member of described dish assembly between the outer shoulder of the plastic deformation part at described edge and described core body.This has guaranteed the combination stability between dish assembly and the core body, even also be like this under the situation of internal diameter change, distortion or the share zone deficiency of the centre bore of board member
Description of drawings
According to the accompanying drawing of the description given below and the preferred embodiment for the present invention, will be easier to fully understand the present invention, still, these are described and accompanying drawing is not to be intended to the present invention is limited to specific execution mode, and only are to be used to the purpose that illustrates and understand.
Among the figure:
Fig. 1 is the longitdinal cross-section diagram according to the direct acting type electromagnetic switch that is used for engine primer of first embodiment of the invention;
Fig. 2 is the circuit diagram of electric structure that the electromagnetic switch of Fig. 1 is shown;
Fig. 3 is the longitdinal cross-section diagram that the internal structure of the dish assembly in the electromagnetic switch that is installed in Fig. 1 is shown;
The front view of the magnetic core of making by base and dish assembly when Fig. 4 is the rubber blanket observation that illustrates from the electromagnetic switch that is installed in Fig. 1;
Fig. 5 is the longitdinal cross-section diagram that the dish assembly of being made by ring segment stacked in the electromagnetic switch that is installed in Fig. 1 and annular slab is shown;
Fig. 6 is the local amplification sectional view by base and the magnetic core formed of dish assembly that illustrates as shown in Fig. 3 to Fig. 5;
Fig. 7 be illustrate in the electromagnetic switch that is installed in Fig. 1, amplify front view by the part of base and the magnetic core made of dish assembly;
Fig. 8 illustrates the local amplification sectional view of the magnetic core of Fig. 6 according to the remodeling of second embodiment of the invention;
Fig. 9 is the internal structure that illustrates according to the dish assembly in the electromagnetic switch that is installed in Fig. 1 of third embodiment of the invention;
Figure 10 (a) is the local amplification sectional view along Figure 10 (b) center line C-C intercepting, and it is illustrated in the dish assembly that the magnetic core edge is carried out riveted Fig. 9 before;
Figure 10 (b) is the plane graph that radially relatively partly carries out the dish assembly of riveted Fig. 9 afterwards that is illustrated in the magnetic core edge;
Figure 11 is the longitdinal cross-section diagram that illustrates according to the direct acting type electromagnetic switch that is used for engine primer of four embodiment of the invention;
Figure 12 (a) is the front view of magnetic core that the electromagnetic switch of Figure 11 is shown;
Figure 12 (b) is that it illustrates the internal structure of magnetic core along the longitdinal cross-section diagram of the A-A line intercepting of Figure 12 (a);
Figure 13 is the local amplification sectional view of Figure 12 (b);
Figure 14 (a) is the front view that a slice in the dish assembly of four embodiment of the invention is shown;
Figure 14 (b) is the sectional view along the B-B line intercepting of Figure 14 (a);
Figure 15 is the front view that the remodeling of the magnetic core among Figure 12 (a) and 12 (b) is shown;
Figure 16 is the local amplification sectional view that illustrates according to the magnetic core of fifth embodiment of the invention;
Figure 17 is the local amplification sectional view that illustrates according to the magnetic core of sixth embodiment of the invention;
Figure 18 (a) and 18 (b) are the end views of operation of centre bore that each sheet of the dish assembly of going out Figure 17 is shown;
Figure 19 is the local amplification sectional view that illustrates according to the magnetic core of seventh embodiment of the invention; And
Figure 20 is the stereogram that the magnetic core of traditional electrical magnetic switch is shown.
Embodiment
With reference to accompanying drawing, wherein identical Reference numeral is represented identical parts in several views, particularly with reference to Fig. 1, shown in it according to the direct acting type electromagnetic switch 1 that is used for engine primer of first embodiment of the invention.Electromagnetic switch 1 design is in order to be switched on or switched off main contacts, to describe in detail as the back, main contacts is installed in the motor field circuit, hereinafter this motor field circuit is called motor circuit, thereby connects the explosive motor of the electro-motor of engine primer with the starter motor motor vehicle.Electromagnetic switch 1 comprises the solenoid component 2 and the switch cover 3 that is bonded to solenoid component 2 as electromagnet.
Solenoid component 2 is by forming with lower member: as the switch enclosure 4 of yoke, place the solenoid 5 in the switch enclosure 4, fixed magnetic core 6, the plunger 8 that will be magnetized when coil 5 excitations---and it is as axle (being also referred to as plunger rod) 9 that slidably places the removable core of coil 5 inside and be arranged to move with plunger 8.
Coil 5 is made up of sucking coil 5a and hold-in winding 5b, and described sucking coil 5a and hold-in winding 5b twine bobbin 10 with two-layer form.Sucking coil 5a work is to produce the magnetic attraction of pulling plunger 8.Hold-in winding 5b work is to be created in the magnetic force that keeps or keep plunger 8 when plunger 8 is subjected to the tension of sucking coil 5a.
Fixed magnetic core 6 is made by soft magnetic materials such as for example soft irons, and is used for forming the magnetic circuit with air gap together with switch enclosure 4 and plunger 8.This magnetic circuit and coil 5 magnetically link.Switch enclosure 4 is also as magnetic core---and promptly fixedly magnetic circuit forms material, but is defined as magnetic core 6 with an end of close the movable contact 17 of adjacent coils 5 and along the fixed component perpendicular to the axis extension of coil 5 here.The back will be described the structure of magnetic core 6 in detail.
Plunger 8 places in the sleeve pipe 7 that aligns with fixed magnetic core 6.Back-moving spring 11 places between magnetic core 6 and the plunger 8, to force plunger 8 away from magnetic core 6 (promptly as shown in fig. 1 left), therefore limits air gap between magnetic core 6 and plunger 8.
Be formed with flange 9a on one end of axle 9, flange 9a is fastened to an end of plunger 8, thereby can move with plunger 8.The other end of axle 9 passes the centre bore 6a that is formed on the magnetic core 6 and extends in the contact chamber 12 that is formed in the switch cover 3.
Switch cover 3 for example is formed from a resin and is arranged to by rubber blanket 13 and magnetic core 6 butts.By the outer circumference end of bending switch enclosure 4, switch cover 3 is bonded to the end of switch enclosure 4 to limit the contact chamber 12 between switch cover 3 inwalls and rubber blanket 13.
As mentioned above, main contacts comprises pair of fixed contacts 16 and movable contact 17.Fixed contact 16 by be installed in the switch cover 3 external terminal 14 and 15 and motor circuit couple.Terminal 14 and 15 can be made by common bolt.Movable contact 17 moves, thus the electrical connection between foundation or the disconnection fixed contact 16.
Movable contact 17 is fastened to the end of axle 9 by the electrical insulator 18 in the contact chamber 12, and be subjected to placing the flange 9a of axle 9 and the contact spring 19 between the insulator 18 towards axle 9 tops () urgent power promptly as shown in fig. 1 to the right, thus consistently with stop part 20 butts that are engaged on axle 9 ends.
External terminal 14 and 15 is typical B terminal and typical M terminal, and as shown in Figure 2, they are connected to the storage battery 21 that is installed in the motor vehicles.
In the operation of electromagnetic switch 1, when starting switch 25 is as shown in Figure 2 connected so that during coil 5 excitations, it causes magnetic core 6 to be magnetized producing magnetic attraction between the core body 60 of magnetic core 6 and plunger 8, thereby the spring pressure that makes plunger 8 overcome back-moving spring 11 moves to core body 60 (promptly as shown in Figure 6 left).The mobile axle 9 that makes of plunger 8 is pushed, thereby makes movable contact 17 butt fixed contacts 16.Plunger 8 overcomes the pressure that is produced by contact pressure spring 19 and is moved further, and the end of butt core body 60, and therefore stops.This makes the compression pressure that is produced by contact pressure spring 19 act on the movable contact 17, to guarantee the butt stability of movable contact 17 and fixed contact 16, therefore begins from the power electric motors of battery 22 in being installed in engine primer.After engine start, starting switch 25 disconnects.This makes coil 5 degaussings, thereby magnetic attraction disappears.The be reset spring pressure of spring 11 of plunger 8 pushes back then, movable contact 17 is moved away disconnecting the electrical connection between the fixed contact 16 from fixed contact 16, thereby stop the motor power supply to engine primer.
3 and 4 structures of describing magnetic cores 6 in detail below with reference to accompanying drawings.
Magnetic core 6 is made by core body 60 and dish assembly 61.As mentioned above, core body 60 drum that also is known as core body and has hollow.Core body 60 is arranged to align with plunger 8, and makes one of opposite end towards plunger 8.Dish assembly 61 is engaged on the outer peripheral portion of core body 60 and in the face of the end of coil 5.
As being shown clearly among Fig. 1, core body 60 is made by the cylinder of hollow, and has centre bore 6a.Core body 60 is made by small diameter portion 60b (being also referred to as protuberance), and dish assembly 61 is engaged on this small diameter portion, and the large-diameter portion branch was engaged on the interior week of sleeve pipe 7.Small diameter portion 60b was force-fitted on the interior week of the through hole 61c that coils assembly 61.
Dish assembly 61 is made by folded measure-alike soft iron small pieces (being tabular component).Dish assembly 61 remains between the end wall and switch cover 3 of bobbin 10 of coil 5.Particularly, the end surfaces butt of the close switch cover 3 of assembly 61 is arranged to and is coiled to the rubber blanket 13 that is used as soft seal, and radially extend along dish assembly 61.Rubber blanket 13 is clipped between the openend of dish periphery of assembly 61 and switch cover 3 in its outer circumference.Switch enclosure 4 is crooked or bending in its outer circumference, and is bonded to the periphery of switch cover 3.
Dish is formed with the coil lead opening 63 of two rectangles in the assembly 61, and when observing by the mode of Fig. 6, the terminal lead of coil 5 passes coil lead opening 63 and extends to the right, and coils assembly 61 and also have two pairs of projections or small pieces, and this will be described in detail later.
Dish assembly 61 is made up of stacked nine (9) individual thin ring segment 61a and an annular slab 61b, and the thickness of annular slab 61b is greater than the thickness of sheet 61a, and annular slab 61b and rubber blanket 13 are faced.Each of sheet 61a and plate 61b all has a pair of measure-alike, the opening that limits coil lead opening 63.The described paired opening of sheet 61a and plate 61b is mutually the same along circumferential angle intervals.Specifically, sheet 61a and plate 61b are arranged to stacked on top of each other or overlapping, make the opening of sheet 61a and plate 61b overlap each other to limit two coil lead openings 63.Each sheet 61a has two location embossing projections 64, and location embossing projection is outstanding and radially relative each other with respect to the center of sheet 61a towards rubber blanket 13, promptly is arranged to each other in 180 °, and separates roughly 90 ° along the circumferential and coil lead opening 63 of sheet 61a.Embossing projection 64 cooperates with being in alignment with each other, thereby retention tab 61a can not rotate in a circumferential direction it along it.Plate 61b has two holes 65, and they separate with the angle intervals identical with embossing projection 64.Particularly, as shown in Figure 6, the embossing projection 64 of a sheet 61a of the rightmost side is force-fitted in the hole 65 of plate 61b to realize coil lead opening 63.The big embossing projection 64 butt rubber blankets 13 that must be enough to prevent to be engaged in the rightmost side sheet 61a in the hole 65 of the thickness of plate 61b.
Annular slab 61b has the arc-shaped depression portion 62 in the inner edges of being formed on, and the small diameter portion 60b that described inward flange defines core body 60 is engaged in centre bore 61c wherein.Arc-shaped depression portion 62 is radially relative each other with respect to the center of annular slab 61b.The small diameter portion 60b of core body 60 has two couples of small pieces 60c that extend along its radial outward.Small pieces 60c is along the radial outward plastic deformation of core body 60 or crooked to form elastic clip, and it makes stacked sheet 61a keep around the periphery of the small diameter portion 60b of core body 60.As being clearly shown that among Fig. 7, small pieces 60c is arranged in arc-shaped depression portion 62 and not outside rubber blanket 13 protrudes in plate 61b.The thickness of plate 61b is big must to be enough to prevent that small pieces 60c is projected into the outside towards rubber blanket 13.Each arc-shaped depression portion 62 is all along the circumferential extension of plate 61b, and its length is big as enough a pair of corresponding small pieces in the paired small pieces 60 to be arranged in this arc-shaped depression portion.
As mentioned above, small pieces 60c plastically is out of shape keeping stacked sheet 61a securely, guarantees that therefore sheet 61a is bonded to that the degree of core body 60 is big must to be enough to bear the large-scale physical impact that transmits from dish assembly 61 outsides or vibration and can not to damage embossing projection 64 and rubber blanket 13.
Below description is coiled the manufacturing and the installation on core body 60 thereof of assembly 61.
The coil lead opening 63 of plate 61b, hole 65, centre bore 61c and arc-shaped depression portion 62 form by punching press.Similarly, the embossing projection 64 of each ring segment 61a also all forms by punching press.
Ring segment 61a makes embossing projection 64 overlap each other with stacked form setting.Each projection 64 all press fit in adjacent one.As shown in Figure 6, rightmost one projection 64 press fit in the hole 65 of plate 61b to form or realization dish assembly 61 among the sheet 61a.Next, the small diameter portion 60b of core body 60 is force-fitted among the centre bore 61c of dish assembly 61.The outside elastic bending of small pieces 60c of small diameter portion 60b is firmly-fixed to core body 60 will coil assembly 61.Reference numeral 60d among Fig. 6 represents the outer ring shoulder of core body 60, dish assembly 61 by annular shoulder in addition by small pieces 60c flexibly urge consistently with sheet 61a in a butt of the leftmost side as shown in Figure 6.Particularly, small pieces 60c bending is to form elastic clip, and this elastic clip remains on combining closely with formation dish assembly 61 and core body 60 between small pieces and the shoulder 60d with stacked ring segment 61a.
Can retrofit to the structure of electromagnetic switch 1 in a manner described below.
Plate 61b in the face of rubber blanket 13 in the dish assembly 61 is made up of stacked a plurality of ring segments alternatively, and the gross thickness of these a plurality of ring segments is greater than the gross thickness of sheet 61a.
The plate 61b of dish assembly 61 place alternatively sheet 61a as shown in Figure 6 the leftmost side, near on the sheet of bobbin 10.This set has also been avoided the stress raisers that caused by projection 64 at the end wall place of solenoid 10.Arc-shaped depression portion 62 need be formed among the sheet 61a as shown in Figure 6 in the rightmost side sheet, rather than is formed among the annular slab 61b.
The arc-shaped depression portion 62 of replacing plate 61b can increase the size of centre bore 61c or diameter so that it is not physically interfered with small pieces 60c.
Fig. 8 illustrates the dish assembly 61 according to second embodiment of the invention.
Dish assembly 61 only is made up of nine (9) stacked individual ring segment 61a, and the structure of the ring segment in the structure of these ring segments and first execution mode shown in Fig. 1 to 7 is identical.Rubber blanket 13 has centre bore 250, and the end of small diameter portion 62 places described centre bore.Rubber blanket 12 also has hole 131 and the arc-shaped depression portion 132 that is formed at wherein.The structure and the purposes of the arc-shaped depression portion 62 of the annular slab 61b of the dish assembly 6 in the structure of arc-shaped depression portion 132 and first execution mode are identical.Similarly, the structure in hole 131 and purposes are identical with the hole 65 of the dish assembly 6 of first execution mode.The diameter in hole 131 is big must to be enough to avoid physical interference with the embossing projection 64 of sheet 61a.Projection 64 and small pieces 60c are arranged to not hinder for example operation of switch block such as movable contact 17.Each projection 64 of ring segment 61a can be force-fitted in the adjacent projection.
Fig. 9,10 (a) and 10 (b) illustrate the magnetic core 6 according to third embodiment of the invention.
In first execution mode, dish assembly 61 is made up of stacked nine (9) individual sheet 61a and plate 61b, and they are axially stacked on top of each other along magnetic core 6.The thickness of plate 61b is two to five times of thickness of sheet 61b, and being preferably is three to four-fold.This has realized the elasticity of plate 61b and the balance of mechanical properties between the rigidity.
In first execution mode, each sheet 61a has two embossing projections 64 (for only showing for purpose of brevity in Fig. 9).With different in first execution mode, each projection 64 all deviates from movable contact 17 and gives prominence to (promptly as left shown in this Fig).The projection 64 of each sheet 61a all is force-fitted in the adjacent projection alignedly, thereby keeps small pieces 61a that it can not rotated in a circumferential direction along it.Similarly, plate 61b has embossing projection 66, and it is force-fitted in the recess on embossing projection 64 back sides that are formed at an adjacent sheet 61a.This structure does not need to form the hole 65 among the plate 61b of first execution mode for example, thereby makes the processing cost of dish assembly 61 reduce and the rigidity of plate 61b increases.As shown in Figure 9, one of the sheet 61a leftmost side is preferably designed so that the recess that only has the projection 66 that wherein is combined with an adjacent sheet 61a.In other words, among the sheet 61a one of the leftmost side be preferably designed so that and have smooth or flat surface (promptly as left-hand face shown in this Fig).
Dish assembly 61 is arranged to not adjacent with the end of switch cover 3 by rubber blanket 13.
Dish assembly 61 is realized with the small pieces 60c of the corner that combines the small diameter portion 60b that is formed on core body 60 by punching press of axial elasticity ground or riveted along core body 60 of the core body 60 of magnetic core 6.Particularly, core body 60 has two small pieces 60cs radially relative each other with respect to its axial centre.For for purpose of brevity, Fig. 9 only illustrates a small pieces 60c.As being clearly shown that among Figure 10 (a) and 10 (b), each small pieces 60c all be one by form the outward flange of the small diameter portion 60b openend 60f that is limited to core body 60 or the projection on the outer turning by the recess 60e in the 60f medial region of end.As shown in Figure 10 (b), by using drift or hammer to make small pieces 60c punching press plastically or flattening, make that thereby they can radially only opening to the described plate 61b of external pressure along core body 60 slightly, therefore form elastic clip, elastic clip is firmly held in stacked sheet 61a and plate 61b between the outer shoulder 60d of small pieces 60c and core body 60.Except small pieces 60c, can on the outward flange of the end 60f of the small diameter portion 60b of core body 60, form annular ridge.
Except that following aspect, the dish assembly 61 manufacturing with first execution mode in essentially identical mode carry out.
Projection 64 and 66 is all gone out it and is formed simultaneously by stacked sheet 61a and plate 61b being placed on the mould and by single operation.This has also realized being fitted to each other with realization dish assembly 61 of projection 64 and 66.
At needs dish assembly 61 is had under the situation of bigger size, can finish its manufacturing by the order of following three steps: the projection 64 of going out six stacked sheet 61a; Go out the projection 64 and 66 of four sheet 61a of stacked residue and plate 61b; And a folded projection 64 press fit in another folded projection.
Structure with dish assembly 61 of thicker plate 61b has following advantage.
When plunger 8 bump core bodys 60, impact can sequentially be passed to sheet 61a, and finally arrive at plate 61b.The impact that each sheet 61a will be input to wherein is delivered on the adjacent sheet, makes each sheet 61a all be easy to physical deformation.But it is because there is not object to accept the impact of transmission from plate 61b that the plate 61b that impact is arrived at last is easy to physical deformation.Therefore, suggestion is designed to have plate 61b than the big thickness of sheet 61a so that its rigidity is big must be enough to resist physical deformation.As mentioned above, therefore the thickness of plate 61b design make because the plastic deformation minimum that the input of impact produces than the big twice to five of thickness of sheet 61a times.
As mentioned above, dish assembly 61 is made up of stacked annular sheet metal (i.e. nine sheet 61a and single plate 61b), make in these sheets each all be subjected to, thereby improve the ability of impacting that absorbs than strain much bigger when dish assembly 61 is made by single mild steel plate.The kinetic energy that this means plunger 8 is coiled assembly 61 and is little by little absorbed by core body 60, has therefore reduced movable contact 17 and has collided the impact that fixed contacts 16 are produced, thereby reduced the wearing and tearing of contact 16 and 17 widely.
Figure 11 shows the electromagnetic switch 1 according to four embodiment of the invention.Reference numeral identical in employed and first to the 3rd execution mode is represented identical parts, and will omit its detailed description at this.
Solenoid component 2 by coil 5, fixed magnetic core 38, by sleeve pipe 7 place coil 5 inboards plunger 8, place between core 38 and the plunger 8 back-moving spring 11 with and on maintain movable contact 17 plunger rod 9 form.
Coil 5 is made up of sucking coil 5a and hold-in winding 5b, and sucking coil 5a and hold-in winding 5b twine bobbin 10 in two-layer mode.Sucking coil 5a work spurs plunger 8 to produce magnetic attraction.Hold-in winding 5b work is to be created in the magnetic force that keeps or keep plunger 8 when plunger 8 is subjected to the tension of sucking coil 5a.
Fixed magnetic core 38 is made up of core body 80 and dish assembly 81.Core body 80 places in the sleeve pipe 7 and faces plunger 8.Dish assembly 81 keeps making interior shoulder butt on its outward flange and the inner rim that is formed on solenoid box 4 to keep core body 80.
Plunger 8 and fixed magnetic core 38 place the inside of sleeve pipe 7 alignedly.Back-moving spring 11 places between magnetic core 38 and the plunger 8 to force plunger 8 away from magnetic core 36 (promptly as shown in Figure 9 left), therefore limits air gap during by degaussing between core body 80 and plunger 8 when magnetic core 5.
Plunger rod 9 is fastened to an end of plunger 8 at one end place, make itself and plunger 8 move together.The other end of plunger 9 passes the centre bore that is formed on the magnetic core 38 and extends in the contact chamber 12 that is formed in the switch cover 3.
Switch cover 3 is made by for example resin, and is arranged to by dish assembly 81 butts of rubber blanket 13 with magnetic core 38.By the outer circumference end of bending switch enclosure 4, switch cover 3 is bonded to the end of switch enclosure 4.
External terminal 14 is typical B terminals, and it receives the high potential side of motor circuit (being storage battery).External terminal 15 is typical M terminals, and it receives the low potential side of motor circuit (being motor) by motor leads (not shown). External terminal 14 and 15 has joint, and fixed contact 16 is fixed to described joint.
Movable contact 17 is fastened to the end of plunger rod 9 by the electrical insulator 18 in the contact chamber 12, and be subjected to around contact spring 19 orientation column stopper rods 9 tops that plunger rod 9 peripheries are provided with () urgent power promptly as shown in Figure 11 to the right, thus consistently with stop part 20 butts that are engaged on plunger rod 9 ends.Stop part 20 is realized by pad.
To describe the structure of magnetic core 38 below in detail.
As mentioned above, magnetic core 38 is made up of core body 80 and dish assembly 81.
Dish assembly 81 is made up of the ring segment 82 of stacked same size, the ring segment 82 formation one that is pressed against each other.
As shown in Figure 14 (a), each sheet 82 all has circular periphery, and is the annular with the round center hole 82a that goes out.To be sheet 82 cut open the sectional view of getting along the B-B line of Figure 14 (a) to Figure 14 (b).
As being clearly shown that among Figure 14 (a), dish assembly 81 has the centre bore 81a of perforation and a pair of elongated opening 81b.Centre bore 81a forms by arranging the circular port 82a that is formed in the sheet 82 with overlapping each other.The terminal lead of coil 5 is guided the right side of dish assembly 81 into through opening 81b.
Core body 80 is made up of base 80a and protuberance 80b.The end of base 80a is along the axially facing plunger 8 of electromagnetic switch 1.It is outstanding from the other end of base 80b that protuberance 80b deviates from plunger 8 ground.Protuberance 80b is press fit among the centre bore 81a of dish assembly 81.The outward flange of protuberance 80b is flexibly outwardly-bent to realize core body 80 and to coil combining closely of assembly 81 then.Particularly, as shown in Figure 12 a, 12b and 13, protuberance 80b has projection or small pieces 80c, and it is formed on the outer turning in the face of dish assembly 81 centre bore 81a inner rims of protuberance 80b.Thereby between dish assembly 81 and the core body 80 combine closely by riveted or outwards flexibly crooked small pieces 80c protuberance 80b is force-fitted in the centre bore 81a of dish assembly 81 and realizes.As from Figure 12 (a) as can be seen, small pieces 80c is formed on the outward flange of protuberance 80b, and radially relative each other, but alternatively, as shown in Figure 15, the annular projection of elastically deformable or ridge 80d are formed on the turning of protuberance 80b.
In the operation of electromagnetic switch 1, when coil 5 during by excitation, it causes magnetic core 38 to be magnetized producing magnetic attraction between the core body 80 of magnetic core 38 and plunger 8, thereby the spring pressure that makes plunger 8 overcome back-moving spring 11 moves to core body 80 (promptly as shown in Figure 11 left).The mobile plunger rod 9 that makes of plunger 8 is pushed, thereby makes movable contact 17 butt fixed contacts 16.Plunger 8 overcomes the pressure that is produced by contact pressure spring 19 and is moved further, and the end of butt core body 80 (being base 80a), and therefore stops.This makes the compression pressure that is produced by contact pressure spring 19 act on the movable contact 17, to guarantee the butt stability of movable contact 17 and fixed contact 16, therefore begins this and is installed in the interior power electric motors of engine primer.After engine start, coil 5 degaussings, thus magnetic attraction disappears.The be reset spring pressure of spring 11 of plunger 8 pushes back then, movable contact 17 is moved away disconnecting the electrical connection between the fixed contact 17 from fixed contact 16, thereby stop the motor power supply to engine primer.
As mentioned above, the assembling of magnetic core 8 realizes as follows: protuberance 80b is press fit in the centre bore 81a of dish assembly 81, the outer peripheral part of protuberance 80b or whole outward flange are outwards flexibly opened to realize combining closely of core body 80 and dish assembly 81 centre bore 81a.No matter how changing of the shape of the sheet 82 of dish assembly 81, this has all guaranteed the connective stability of protuberance 80b and centre bore 81a.Especially, even change, be twisted or its share zone when not enough when the centre bore 82a of sheet 82 internal diameter, guarantee that also protuberance 80b presses fit in the required degree among the dish assembly 81 centre bore 81a.
For example, even stop/restarting system (being commonly referred to idle running stops/economizer system) when also repeatedly being switched on or switched off when electromagnetic switch 1 is used for automatic engine, guarantee that also the bond strength between when plunger 8 attracted to the core body 80 (being base 80a) of magnetic core 38 protuberance 80b and the dish assembly 81 acts on reseat pressure on the plunger 8 even as big as bearing by as shown in Figure 11 driving spring 29, thereby improved the operating reliability of electromagnetic switch 1.
Figure 16 illustrates the magnetic core 38 according to fifth embodiment of the invention.
The axial length of the protuberance 80b of magnetic core 38 is than big in first and second execution modes.Particularly, as among Figure 16 as can be seen, protuberance 80b is along the gross thickness of the axial length of core body 80 greater than the stacked sheet 82 of dish assembly 81.Protuberance 80b is press-fitted among the centre bore 81a of dish assembly 81, makes top (i.e. right-hand member among this figure) extend to the outside of dish assembly 81 (being centre bore 81a).Protuberance 80b has small pieces 80c, and small pieces 80c is outwardly-bent along its radial elastic ground, and this maintains the sheet 82 of dish assembly 81 securely to form firm folder, to guarantee the combination between core body 80 and the dish assembly 81.Except small pieces 80c, annular ridge is formed on the turning of protuberance 80b alternatively.
Figure 17 illustrates the magnetic core 38 according to sixth embodiment of the invention.
As second execution mode, each sheet 82 all has centre bore 82a, as shown in Figure 18 (b).As shown in Figure 18 (a), centre bore 82a by use drift 21 punching presses be placed on sheet 82 on the mould in be formed centrally.Usually, when going out centre bore 82a, can cause upward formation pressure of interior all turnings (i.e. last turning as shown in Figure 18 (b)) to fall into, feasible interior all turnings camber or rounded at centre bore 82a.
The dish assembly 81 of this execution mode is designed such that outermost in the sheet 82 of dish assembly 81---promptly as the rightmost side represented with Reference numeral 82b among Figure 17 one---from the base 80a of core body 80 farthest, thereby makes interior all turnings (being the right side shown in Figure 17) toward the outer side of rounding of centre bore 82a.
Realize that by following manner will coil assembly 81 is installed on the magnetic core 38: stacked sheet 82 is force-fitted on the protuberance 80b of core body 80, and make the neighboring that is formed on protuberance 80b or the small pieces 80c on the turning interior all turnings butt, therefore stacked sheet 82 is applied elastic pressure along the upper left direction of the inclination among Figure 17 along the rounding of the centre bore 82a of the sheet 82b of its outwardly-bent Cheng Yupan assembly 81 in radial elastic ground.Particularly, elastic pressure acts on the stacked sheet 82 along both direction: the direction that is the radially outer direction of dish assembly 81, and is that stacked sheet 82 is pressed against on the shoulder 60d of base 80a---promptly the axial compression of assembly 81 is coiled on the edge---.This guarantees combining closely between core body 80 and the dish assembly 81.Except small pieces 80c, annular ridge is formed on the turning of protuberance 80b alternatively.
Figure 19 illustrates the magnetic core 38 according to seventh embodiment of the invention, and it is the modification of magnetic core in the 6th execution mode.
Particularly, interior all turnings of the centre bore 82a of sheet 82b are formed with chamfering.Dish assembly 81 is designed so that the chamfering inner periphery of sheet 82b or turning (promptly as shown in FIG. to the right) toward the outer side.
Realize that by following manner will coil assembly 81 is installed on the magnetic core 38: stacked sheet 82 is force-fitted on the protuberance 80b of core body 80, and make the neighboring that is formed on protuberance 80b or the small pieces 80c on the turning interior turning butt, therefore stacked sheet 82 is applied elastic pressure along the upper left direction of the inclination among Figure 19 along the chamfering of the centre bore 82a of the sheet 82b of its outwardly-bent Cheng Yupan assembly 81 in radial elastic ground.Particularly, elastic pressure acts on the stacked sheet 82 along both direction: the direction that is the radially outer direction of dish assembly 81, and is that stacked sheet 82 is pressed against on the shoulder 60d of base 80a---promptly the axial compression of assembly 81 is coiled on the edge---.This guarantees combining closely between core body 80 and the dish assembly 81.Except small pieces 80c, annular ridge is formed on the turning of protuberance 80b alternatively.
Though the present invention is open in the mode of preferred implementation for the ease of better understanding, should understand in the case of without departing from the principles of the present invention, the present invention can implement in many ways.Therefore, the present invention should be understood to comprise all possible execution mode and the remodeling that can implement of shown execution mode under the situation that does not break away from the principle of the present invention that is proposed by appending claims.
For example, electromagnetic switch 1 is open in usual, but also is designed to normally closed type alternatively, thereby makes the movable contact 17 move away fixed contact 16 when coil 5 is by excitation.

Claims (20)

1. electromagnetic switch comprises:
Switch cover wherein is formed with the contact chamber;
Fixed contact, it places in the described switch cover;
Movable contact, it places in the described switch cover;
Bobbin;
Removable core, it can move along given mobile route;
Fixing core, it comprises dish assembly and cylindrical shape core body, described dish assembly is formed with between the end and described switch cover that is engaged in the mating holes on the described cylindrical shape core body and places described bobbin, thereby makes in its opposed major surfaces one towards described removable core;
Coil, it twines around described bobbin, and when excitation, described coil produces magnetic force moving described removable core along described given mobile route by described fixedly core, thereby makes the described fixed contact of described movable contact butt; And
Containment member remains between another and the described switch cover in the opposed major surfaces of described dish assembly the end butt of itself and described switch cover,
Wherein said dish assembly is by forming along its thickness direction stacked annular slab member stacked on top of each other, and each described annular slab all has opening, and the terminal lead of described coil extends through described opening, and
Described annular slab member is divided into first group and second group, described first group of at least one that comprises in the described annular slab member, described second group of described annular slab member that comprises other, described second group annular slab member has embossing projection outstanding along its thickness direction and that be fitted to each other, in described first group of annular slab member at least one has the hole, and one embossing projection in the described second group annular slab member is matched with in the described hole.
2. electromagnetic switch as claimed in claim 1, wherein each described annular slab member all has the recess of the downside that is formed on a corresponding described projection, between two adjacent annular slab members, each in the described projection all is engaged in the described recess in the mode of face-to-face contact.
3. electromagnetic switch as claimed in claim 1, wherein each described annular slab member all has two embossing projections radially relative each other with respect to the center of described annular slab member.
4. electromagnetic switch comprises:
Switch cover wherein is formed with the contact chamber;
Fixed contact, it places described switch cover inside;
Movable contact, it places described switch cover inside;
Bobbin;
Removable core, it can move along given mobile route;
Fixing core, it comprises dish assembly and cylindrical shape core body, described cylindrical shape core body has relative end, outer shoulder and extends in described outer shoulder and the described opposite end in the face of the periphery wall between that end of described movable contact, described dish assembly places between the end and described switch cover of described bobbin, thereby makes in its opposed major surfaces one towards described removable core;
Coil, it twines around described bobbin, when excitation, described coil produces magnetic force moving described removable core along described given mobile route by described fixedly core, thereby makes the described fixed contact of described movable contact butt or leave described fixed contact; And
Containment member remains between another and the described switch cover in the opposed major surfaces of described dish assembly the end butt of itself and described switch cover,
Wherein said dish assembly is by forming along its thickness direction stacked annular slab member stacked on top of each other, and has a mating holes that runs through described folded thickness, each described annular slab member all has opening, the terminal lead of described coil extends through described opening, each described annular slab member all has the hole of the mating holes that limits described dish assembly, described dish assembly is matched with the periphery wall of described cylindrical shape core body with described mating holes
Described annular slab member is divided into first group and second group, described first group of at least one that comprises in the described annular slab member, described second group of described annular slab member that comprises disposed adjacent one another other, described first group is provided with that face described movable contact in the described opposed major surfaces, and described second group be provided with in the described opposed major surfaces another
In the opposed end of described cylindrical shape core body in the face of the edge of that end of described movable contact along the plastic deformation radially outward of described cylindrical shape core body to form elastic clip, described elastic clip remains on the stacked annular slab member of described dish assembly between the outer shoulder of described edge and described cylindrical shape core body, and
At least one periphery in its hole in the described first group annular slab member is formed with recess, and the plastic deformation edge of that end in the opposed end of described cylindrical shape core body places described recess.
5. electromagnetic switch as claimed in claim 4, the thickness of at least one in wherein said first group of annular slab member is greater than described second group of annular slab member.
6. electromagnetic switch as claimed in claim 4, wherein said second group annular slab member has embossing projection outstanding along its thickness direction and that be fitted to each other, in the described first group annular slab member at least one has the hole, and one embossing projection in the described second group annular slab member is matched with in this hole.
7. electromagnetic switch comprises:
Switch cover wherein is formed with the contact chamber;
Fixed contact, it places described switch cover inside;
Movable contact, it places described switch cover inside;
Bobbin;
Removable core, it can move along given mobile route;
Fixing core, it comprises dish assembly and cylindrical shape core body, described dish assembly is formed with between the end and described switch cover that is engaged in the mating holes on the described cylindrical shape core body and places described bobbin, thereby makes in its opposed major surfaces one towards described removable core;
Coil, it twines around described bobbin, when excitation, described coil produces magnetic force moving described removable core along described given mobile route by described fixedly core, thereby makes the described fixed contact of described movable contact butt or leave described fixed contact; And
Containment member remains between another and the described switch cover in the opposed major surfaces of described dish assembly the end butt of itself and described switch cover,
Wherein said dish assembly is by forming along its thickness direction stacked annular slab member stacked on top of each other, and each described annular slab all has opening, and the terminal lead of described coil extends through described opening, and
Described annular slab member all has embossing projection outstanding along its thickness direction and that be fitted to each other, and described containment member has the hole, and the embossing projection of an adjacent annular slab member places this hole.
8. electromagnetic switch comprises:
Switch cover wherein is formed with the contact chamber;
Fixed contact, it places described switch cover inside;
Movable contact, it places described switch cover inside;
Bobbin;
Removable core, it can move along given mobile route;
Fixing core, it comprises dish assembly and cylindrical shape core body, described cylindrical shape core body has relative end, outer shoulder and extends in described outer shoulder and the described opposite end in the face of the periphery wall between that end of described movable contact, described dish assembly places between the end and described switch cover of described bobbin, thereby makes in its opposed major surfaces one towards described removable core;
Coil, it twines around described bobbin, when excitation, described coil produces magnetic force moving described removable core along described given mobile route by described fixedly core, thereby makes the described fixed contact of described movable contact butt or leave described fixed contact; And
Containment member, remain between another and the described switch cover in the opposed major surfaces of described dish assembly the end butt of itself and described switch cover, described containment member has through hole, and that end in the opposed end of described cylindrical shape core body places described through hole
Wherein said dish assembly is by forming along its thickness direction stacked annular slab member stacked on top of each other, and has a mating holes that runs through described folded thickness, each described annular slab member all has opening, the terminal lead of described coil extends through described opening, each described annular slab member all has the hole of the mating holes that limits described dish assembly, described dish assembly is matched with on the periphery wall of described cylindrical shape core body with described mating holes
In the opposed end of described cylindrical shape core body in the face of the edge of that end of described movable contact along the plastic deformation radially outward of described cylindrical shape core body to form elastic clip, described elastic clip remains on the stacked annular slab member of described dish assembly between the outer shoulder of described edge and described cylindrical shape core body, and
Described sealing plate member is formed with recess in the periphery of its through hole, the plastic deformation edge of that end in the opposed end of described cylindrical shape core body places described recess.
9. electromagnetic switch comprises:
Switch cover wherein is formed with the contact chamber;
Fixed contact, it places described switch cover inside;
Movable contact, it places described switch cover inside;
Bobbin;
Removable core, it can move along given mobile route;
Fixing core, it comprises dish assembly and cylindrical shape core body, described cylindrical shape core body has relative end and peripheral wall portions, one in the described relative end in the face of described removable core, described peripheral wall portions is extended another in described relative end, described dish assembly places between the end and described switch cover of described bobbin, thereby makes in its opposed major surfaces one towards described removable core;
Coil, it twines around described bobbin, when excitation, described coil produces magnetic force moving described removable core along described given mobile route by described fixedly core, thereby makes the described fixed contact of described movable contact butt or leave described fixed contact; And
Containment member remains between another and the described switch cover in the opposed major surfaces of described dish assembly the end butt of itself and described switch cover,
Wherein said dish assembly is by forming along its thickness direction stacked annular slab member stacked on top of each other, and has a mating holes that runs through described folded thickness, each described annular slab member all has the hole of the mating holes that limits described dish assembly, described dish assembly is engaged on the peripheral wall portions of described cylindrical shape core body, and
In the described dish assembly in the face of the thickness of the outermost annular slab member of described movable contact thickness greater than other annular slab member.
10. electromagnetic switch as claimed in claim 9, the thickness of a wherein said outermost annular slab member is bigger two times to five times than other annular slab member thickness.
11. electromagnetic switch as claimed in claim 9, wherein said cylindrical shape core body has relative end, outer shoulder and extends in described outer shoulder and the described opposed end in the face of the periphery wall between that end of described movable contact, and plastically riveted is to form elastic clip in the face of at least a portion at the edge of that end of described movable contact in the opposed end of described cylindrical shape core body, and described elastic clip remains on the stacked annular slab member of described dish assembly between the outer shoulder of described edge and described cylindrical shape core body.
12. electromagnetic switch as claimed in claim 11, the edge of facing that end of described movable contact in the opposed end of wherein said cylindrical shape core body has small pieces, plastically riveted is to form elastic clip for described small pieces, and described elastic clip remains on the stacked annular slab member of described dish assembly between the outer shoulder of described edge and described cylindrical shape core body.
13. an electromagnetic switch comprises:
Fixing core;
Removable core; And
Solenoid, it produces magnetic attraction by described fixedly core when excitation, thereby described removable core is attracted to one of connection electric contact or breaks electrical contacts along given mobile route,
Wherein said fixedly core comprises dish assembly and core body, described core body have relative end, base, protuberance and be formed on described base and described protuberance between outer shoulder, described base has an end, this end is in the face of an end of described fixedly core in the described relative end, described protuberance has an end, this end is to stride across the other end that described base deviates from described removable core in the described relative end, and
Described dish assembly is by forming along its thickness direction stacked annular slab member stacked on top of each other, and has a mating holes that runs through described folded thickness, each described annular slab member all has circular centre bore, the centre bore of described circle limits the mating holes of described dish assembly, described dish assembly is matched with on the described protuberance with described mating holes, and
To form elastic clip, described elastic clip remains on the stacked annular slab member of described dish assembly between the outer shoulder of described edge and described core body at least a portion at the edge of the end of described protuberance along the plastic deformation radially outward of described protuberance.
14. electromagnetic switch as claimed in claim 13, the having to press on the inner periphery in heart hole therein away from an outermost annular slab member of described base of wherein said dish assembly fallen into, described pressure falls into by going out the centre bore of described circle along thickness direction in stacked annular slab member and form, and the pressure of the described outermost annular construction member of plastic deformation edge butt of the end of described protuberance falls into.
15. electromagnetic switch as claimed in claim 13, an outermost annular slab member away from described base of wherein said dish assembly has the chamfer surface on the inner periphery that is formed on its centre bore, and the chamfer surface of the described outermost annular slab member of plastic deformation edge butt of the end of described protuberance.
16. an electromagnetic switch comprises:
Fixing core;
Removable core; And
Solenoid, it produces magnetic attraction by described fixedly core when excitation, thereby described removable core is attracted to one of connection electric contact or breaks electrical contacts along given mobile route,
Wherein said fixedly core comprises dish assembly and core body, described core body have relative end, base, protuberance and be formed on described base and described protuberance between outer shoulder, described base has an end, this end is in the face of an end of described fixedly core in the described relative end, described protuberance has an end, this end is to stride across the other end that described base deviates from described removable core in the described relative end, and
Described dish assembly is by forming along its thickness direction stacked annular slab member stacked on top of each other, and has a mating holes that runs through described folded thickness, each described annular slab member all has circular centre bore, the centre bore of described circle limits the mating holes of described dish assembly, described dish assembly is matched with on the described protuberance with described mating holes
The shoulder outside described of described protuberance and the length between its end is greater than the thickness of described dish assembly, and
Forming elastic clip, described elastic clip remains on the stacked annular slab member of described dish assembly between the outer shoulder of the described at least a portion at described edge and described core body at least a portion at the edge of the end of described protuberance along the plastic deformation radially outward of described protuberance.
17. electromagnetic switch as claimed in claim 16, the having to press on the inner periphery in heart hole therein away from an outermost annular slab member of described base of wherein said dish assembly fallen into, described pressure falls into by going out the centre bore of described circle along thickness direction in stacked annular slab member and form, and the pressure of the described outermost annular construction member of plastic deformation part butt at the edge of the end of described protuberance falls into.
18. electromagnetic switch as claimed in claim 16, an outermost annular slab member away from described base of wherein said dish assembly has the chamfer surface on the inner periphery that is formed on its centre bore, and the chamfer surface of the described outermost annular slab member of plastic deformation part butt at the edge of the end of described protuberance.
19. an electromagnetic switch comprises:
Fixing core;
Removable core; And
Solenoid, it produces magnetic attraction by described fixedly core when excitation, thereby described removable core is attracted to one of connection electric contact or breaks electrical contacts along given mobile route,
Wherein said fixedly core comprises dish assembly and core body, described core body have relative end, base, protuberance and be formed on described base and described protuberance between outer shoulder, described base has an end, this end is in the face of an end of described fixedly core in the described relative end, described protuberance has an end, this end is to stride across the other end that described base deviates from described removable core in the described relative end, and
Described dish assembly is by forming along its thickness direction stacked annular slab member stacked on top of each other, and has a mating holes that runs through described folded thickness, each described annular slab member all has circular centre bore, the centre bore of described circle limits the mating holes of described dish assembly, described dish assembly is matched with on the described protuberance with described mating holes
The having to press on the inner periphery in heart hole therein away from an outermost annular slab member of described base of described dish assembly fallen into, and described pressure falls into by going out the centre bore of described circle along thickness direction in stacked annular slab member and form, and
At least a portion at the edge of the end of described protuberance is along the plastic deformation radially outward of described protuberance, make the pressure of the described outermost annular slab member of plastic deformation part butt at described edge fall into, thereby the formation elastic clip, described elastic clip remains on the stacked annular slab member of described dish assembly between the outer shoulder of the plastic deformation part at described edge and described core body.
20. an electromagnetic switch comprises:
Fixing core;
Removable core; And
Solenoid, it produces magnetic attraction by described fixedly core when excitation, thereby described removable core is attracted to one of connection electric contact or breaks electrical contacts along given mobile route,
Wherein said fixedly core comprises dish assembly and core body, described core body have relative end, base, protuberance and be formed on described base and described protuberance between outer shoulder, described base has an end, this end is in the face of an end of described fixedly core in the described relative end, described protuberance has an end, this end is to stride across the other end that described base deviates from described removable core in the described relative end, and
Described dish assembly is by forming along its thickness direction stacked annular slab member stacked on top of each other, and has a mating holes that runs through described folded thickness, each described annular slab member all has circular centre bore, the centre bore of described circle limits the mating holes of described dish assembly, described dish assembly is matched with on the described protuberance with described mating holes
An outermost annular slab member away from described base of described dish assembly has the chamfer surface on the inner periphery that is formed on its centre bore, and
At least a portion at the edge of the end of described protuberance is along the plastic deformation radially outward of described protuberance, make the chamfer surface of the described outermost annular slab member of plastic deformation part butt at described edge, thereby the formation elastic clip, described elastic clip remains on the stacked annular slab member of described dish assembly between the outer shoulder of the plastic deformation part at described edge and described core body.
CN2008101349777A 2007-08-08 2008-08-07 Magnet switch with magnetic core designed to ensure stability in operation thereof Expired - Fee Related CN101399136B (en)

Applications Claiming Priority (9)

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JP2007206266 2007-08-08
JP2007206266 2007-08-08
JP2007-206266 2007-08-08
JP2007-293545 2007-11-12
JP2007293545 2007-11-12
JP2007293545A JP4548474B2 (en) 2007-11-12 2007-11-12 Electromagnetic switch
JP2008-149173 2008-06-06
JP2008149173 2008-06-06
JP2008149173A JP4883372B2 (en) 2007-08-08 2008-06-06 Magnet switch and manufacturing method thereof

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