CN203055800U - Electromagnetic switch and vehicle starter - Google Patents
Electromagnetic switch and vehicle starter Download PDFInfo
- Publication number
- CN203055800U CN203055800U CN 201320035320 CN201320035320U CN203055800U CN 203055800 U CN203055800 U CN 203055800U CN 201320035320 CN201320035320 CN 201320035320 CN 201320035320 U CN201320035320 U CN 201320035320U CN 203055800 U CN203055800 U CN 203055800U
- Authority
- CN
- China
- Prior art keywords
- group
- cap
- electromagnetic switch
- housing
- circumferential
- 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.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model discloses an electromagnetic switch used in a vehicle starter. The electromagnetic switch comprises a shell, a cover part, an electromagnet core and an elastic element, wherein the shell limits the axial direction and the circumferential direction; the cover part supports a pair of binding posts and the front end of the cover part is fixed in the shell; the electromagnet core is installed in the shell and positioned in the front of the cover part; the elastic element is compressed between the front end of the cover part and the electromagnet core; a group of first limit parts which are circumferentially distributed are limited at a group of circumferential first positions in the shell; the front end of the cover part is fixed and clamped between the first limit part and a turnup edge which is bent inward in the radial direction at the back end of the shell at the circumferential first positions; the front end of the cover part is pushed against the turnup edge by the elastic element at a group of circumferential second positions; and each circumferential second position is respectively positioned between two adjacent circumferential first positions. The utility model also discloses the vehicle starter containing the electromagnetic switch. According to the application, axial float of the cover part can be reduced.
Description
Technical field
The vehicle starter that the application relates to a kind of electromagnetic switch for vehicle starter and comprises this electromagnetic switch.
Background technology
The starter of motor vehicles is made up of motor, transmission mechanism and controlling organization etc. usually.When the engine of starting vehicle, motor produces turning moment, and the driven wheel of this turning moment by transmission mechanism is delivered to the gear ring on the engine flywheel, drives the crankshaft rotating of engine.
Controlling organization is used for the break-make of control starter circuit capable, and engagement and the disengagement of control driven wheel and gear ring.At present, widely used starter controlling organization is electromagnetic switch.Fig. 1 shows a kind of structural representation of existing starter relay.This electromagnetic switch mainly comprises: be fixedly mounted on electromagnetic core 4 and solenoid 6 in the housing 2; By two binding posts 10 that are fixed on cap 8 supportings on the housing 2; Can axially movable armature 16 in solenoid 6 inboards; By electromagnetic core 4 and armature 16 carryings and can be with respect to the two axially movable switch shaft 12; Be fixed on the pull bar 18 on the armature 16; Be fixed on the lance 20 in the armature 16; Be loaded on contact bridge 14 of switch shaft 12 rear ends etc.Pull bar 18 front ends and shift fork (not shown) flexibly connect.
The front end of the rear end of electromagnetic core 4 and cap 8 is clamped between the rear end flange 24 of step 22 in the rear portion of housing 2 and housing 2 relative to one another, accompany dish spring 21 between electromagnetic core 4 and the cap 8, there is not the ability of further axial deformation in dish spring 21 by complete axial compression.
After vehicle ignition switch was connected, solenoid 6 produced electromagnetic force in armature 16, thereby makes armature 16 move towards electromagnetic core 4 backward.After lance 20 touched switch shaft 12, lance 20 pull switch axles 12 were axially mobile backward together.Contact bridge 14 is driven by switch shaft 12 and touches two binding posts 10 so that the two is electrically connected, and connects the main circuit of motor thus and the drive motor rotation.Touch two binding posts 10 and after set up being electrically connected between two binding posts 10, armature 16 continues to move LAP towards electromagnetic core 4 at contact bridge 14, until striking electromagnetic core 4 and by its prevention.During this period, the front end of pull bar 18 spurs transmission mechanism by shift fork, meshes with gear ring on the engine flywheel thereby its driven wheel moves forward, and pilots engine thus.
In above-mentioned ignition process, when armature 16 bump electromagnetic cores 4, the axial impact power that produces can be delivered to flange 24 through dish spring 21 and cap 8 from electromagnetic core 4.The thickness of this flange 24 is less, thereby can take place backward and radially outer strain.In this case, cap 8 is understood backward the very little segment distance of play fast.Then, along with the disappearance of impact, cap 8 shakes reposition gradually.In cap 8 moments of play backward fast, the binding post 10 of its carrying is play backward fast thereupon also, and contact bridge 14 can not be caught up with the action of play backward of binding post 10 fully.Like this, just might break away between contact bridge 14 and the binding post 10, this can cause the main circuit of motor that opening circuit of moment takes place.Electric current moment in the main circuit that can cause motor that opens circuit of this moment falls suddenly, thereby may influence the operation of motor.Simultaneously, between contact bridge 14 and binding post 10, can produce electric arc.Test shows that the peak power of this electric arc can reach 30 kilowatts, and the energy of generation can reach 8 Jiao, and this energy can produce between contact bridge 14 and binding post 10 ablates and adhesion.
The utility model content
The application is intended to solve and ablates between the cap play that causes because of above-mentioned bump in the electromagnetic switch in the vehicle starter of prior art and the contact bridge that causes thus and the binding post and the problem of adhesion.
For this reason, an aspect according to the application provides a kind of electromagnetic switch for vehicle starter, and it comprises: housing, and it limits axial and circumferential; Cap, it is supporting a pairs of posts, and the front end of described cap is fixed in the housing; Electromagnetic core, it is installed in the described housing, is positioned at described cap front; And flexible member, it is folded between the front end and described electromagnetic core of described cap; Wherein, limit circumferentially one group of first limiting section spaced apart in the described housing at one group of circumferential primary importance place; The front end of described cap is fixed at described one group of circumferential primary importance place and is held between the flange that radially bends inwards of described first limiting section and housing rear end; The front end of described cap is pushed against in described flange by described flexible member at one group of circumferential second place place, and each circumferential second place lays respectively between two adjacent circumferential primary importances.
According to the application's preferred implementation, limit circumferentially one group of second limiting section spaced apart at described one group of circumferential second place place in the described housing, described electromagnetic core is pushed against in described one group of second limiting section by described flexible member.
Preferred implementation according to the application, described one group of first limiting section is along circumferentially uniform and be positioned at first plane vertical with the central axis of housing, also along circumferentially uniform and be positioned at second plane vertical with the central axis of housing, second plane is positioned at the position of axial front side to described one group of second limiting section with respect to first plane.
According to the application's preferred implementation, each second limiting section and adjacent two first limiting sections limit groove; The periphery of described electromagnetic core is formed with one group of radially outward outstanding circular arc flange part, each circular arc flange part be placed in respectively in the corresponding groove and by described flexible member vertically forward direction push against in corresponding second limiting section.
Preferred implementation according to the application, one group of arc section that described flexible member has inner ring and radially outward gives prominence to from inner ring, the mode that each arc section is compressed with axial elasticity is placed in the corresponding groove, and the axial elasticity decrement of each arc section is less than its limit axial compression amount.
According to the application's preferred implementation, as utilizing second limiting section to keep the replacement scheme of electromagnetic core, electromagnetic switch comprises solenoid, described electromagnetic core by described flexible member vertically forward direction push against in described solenoid.
Preferred implementation according to the application, electromagnetic switch also comprises the dish spring, described dish spring at described one group of circumferential primary importance place by axial compression fully between described cap and described one group of first limiting section, at described one group of circumferential second place place between described cap and described flexible member.
According to the application's preferred implementation, the front end of described cap is formed with the annular locating flange that axially extends forward, is used for keeping the position of described flexible member.
According to the application's preferred implementation, described flexible member is one of the following: wavy spring, dish spring, helical spring, cluster spring, rubber parts.
The application provides a kind of vehicle starter at it aspect another, comprising: motor; The transmission mechanism that links to each other with the output shaft of motor; And foregoing electromagnetic switch, it controls the operation of described motor and transmission mechanism.
According to the application's electromagnetic switch, when electromagnetic core was subjected to the axial impact of armature, the axial elasticity distortion of impact by flexible member was attenuated or absorbs.Therefore, when armature bump electromagnetic core, the obvious axial endplay that cap can not occur, thus can guarantee can not break away between contact bridge and the binding post, thus opening circuit of moment takes place in the main circuit that can not cause motor.Therefore, in the prior art in cap play and the motor main circuit that causes thus electric current moment fall suddenly, ablate between contact bridge and the binding post and the problem of adhesion is all avoided.
Description of drawings
Fig. 1 is a kind of cutaway view according to the electromagnetic switch in the vehicle starter of prior art.
Fig. 2 is the schematic diagram of the cap clamp structure in the housing rearward end of electromagnetic switch of prior art;
Fig. 3-the 5th is according to the schematic diagram of the various cap clamp structures in the housing rearward end of the application's electromagnetic switch;
Fig. 6 is according to the schematic diagram in the vehicle starter of the application's a preferred implementation.
Fig. 7,8 is respectively front side and the backside perspective view of the electromagnetic core in the electromagnetic switch among Fig. 6.
Fig. 9 is the schematic diagram of the housing in the electromagnetic switch among Fig. 6.
Figure 10 is the schematic diagram of a kind of flexible member that can adopt in the electromagnetic switch among Fig. 6.
Figure 11 is the schematic diagram of the dish spring that can adopt in the electromagnetic switch among Fig. 6.
Figure 12 is the schematic diagram of the another kind of flexible member that can adopt in the electromagnetic switch among Fig. 6.
Embodiment
Some preferred implementations of the application are described below with reference to accompanying drawings.
At first, utilize schematic diagram among Fig. 2-5 to explain the difference of the application and prior art.It may be noted that when describing the application's electromagnetic switch the word " preceding " in expression orientation refers in the axial direction that side near vehicle motor, " back " refers in the axial direction that side away from vehicle motor.
Shown the cap clamp structure in the housing rearward end of housing 2 of electromagnetic switch of the prior art shown in Figure 1 among Fig. 2, wherein, cap 8, dish spring 21, electromagnetic core 4 by with certain axially preload force fixed clamp between the step 22 and rear end flange 24 of housing 2, dish spring 21 by axial compression fully between cap 8 and electromagnetic core 4 and do not have the ability of further axial deformation, also just without any the axial vibration damping ability.When electromagnetic core 4 is subjected to the axial impact of armature 16, be directly delivered to rear end flange 24 with the impact shown in the arrow by dish spring 21 and cap 8 among the figure, this causes rear end flange 24 bigger axial deformation to occur, thereby make the cap axial endplay, and this play can cause the variety of problems that occurs in the background technology part of front.
The application weakens or eliminates the problem of cap axial endplay by the method for clamping that changes cap.Schematically illustrate the cap clamp structure according to some embodiments possible of the application among Fig. 3 to 5.
In execution mode shown in Figure 3, the two periphery of cap 8, dish spring 21 is located to be fixed one group of circumferential (circumferencial direction) primary importance (representing with left part in Fig. 3) and is clamped in corresponding one group circumferentially between first limiting section 25 and rear end flange 24 spaced apart of housing 2.Cap 8, dish spring 21, electromagnetic core 4 threes' periphery between one group of circumferential second place (in Fig. 3 with right side divide expression) is located by the flexible member 30 between dish spring 21 and the electromagnetic core 4 by corresponding one group circumferential spaced apart second limiting section 26 and rear end flange 24 of resilient clamp at housing 2.
Be appreciated that some execution modes according to the application, dish spring 21 can be cancelled.For example, in execution mode shown in Figure 4, the periphery of cap 8 is located to be fixed in one group of circumferential primary importance (representing with left part in Fig. 4) and is clamped between corresponding one group of first limiting section 25 and rear end flange 24 circumferential spaced apart of housing 2.The two periphery of cap 8 and electromagnetic core 4 is between one group of circumferential second place (dividing expression with the right side in Fig. 4) is located by the flexible member 30 between cap 8 and the electromagnetic core 4 by corresponding one group circumferential spaced apart second limiting section 26 and rear end flange 24 of resilient clamp at housing 2, except not having the dish spring, execution mode shown in Figure 4 is similar in other side and execution mode shown in Figure 3, and can obtain similar impact decay and carryover effects.It may be noted that the damping capacity of execution mode shown in Figure 4 is weaker than execution mode shown in Figure 3 slightly owing to there is not the dish spring.
Shown the cap clamp structure according to another execution mode among Fig. 5, can be used as the remodeling of execution mode shown in Figure 3, wherein second limiting section 26 is cancelled, and electromagnetic core 4 is described by solenoid 6(such as back in the front side) support.Like this, armature can be absorbed by flexible member 30 at least in part to the bump of electromagnetic core 4, thereby decays effectively and postpone to be delivered to the impact of cap 8.Execution mode shown in Figure 5 is similar in other side and execution mode shown in Figure 3, and can obtain similar impact decay and carryover effects.It may be noted that for execution mode shown in Figure 4, can cancel second limiting section 26 equally and replace and utilize solenoid 6 to support electromagnetic cores 4.
Introduce the vehicle starter electromagnetic switch that some have adopted the application's aforementioned cap clamp structure below.
Schematically illustrate the electromagnetic switch according to the application's a execution mode among Fig. 6, it has adopted cap clamp structure shown in Figure 3.
As shown in Figure 6, this electromagnetic switch comprises housing 2, and the front bulkhead 2b that it has general cylindrical shape body 2a and is located at this body front end (left end among Fig. 6 is towards the end of that side of vehicle motor) is formed with axially extending bore in this front bulkhead.
In the rear portion of the body 2a of housing 2, fixedly mounting electromagnetic core 4.Shown in Fig. 6-8, this electromagnetic core 4 comprise the rear portion roughly the disc large-diameter portion divide 4a, from large-diameter portion divide outstanding forward substantial cylindrical path part 4b, from path part outstanding roughly frustoconical part 4c forward.Divide the periphery of 4a to be formed with one group of radially outward outstanding circular arc flange part 4d at large-diameter portion, these circular arc flange parts 4d is uniform and extend one section radian along the direction of this circumference respectively on same circumference.In addition, the guide through hole that connects before and after in electromagnetic core 4, being formed with vertically.
The nonmagnetic substance of general cylindrical shape (for example brass) lining 3 is installed in the housing 2, and wherein, the front end of lining 3 is plugged among the front bulkhead 2b of housing 2, and the rear end is sleeved on the path part 4b of electromagnetic core 4, thus lining 3 is fixed in the housing 2.Solenoid 6 is installed between the body of lining 3 and housing 2, and is supported by lining 3.
In the roughly front portion of lining 3, can axially movable mode arranging armature 16.This armature 16 is roughly cylindrical.
The front end of armature 16 is being fixed pull bar 18, extend forward from the front end of armature 16 rear end of this pull bar, the front end of this pull bar is for the upper end of the shift fork (not shown) that is operably connected, and the approximate mid-section of this shift fork is supported pivotly, and the lower end of this shift fork links to each other with transmission mechanism.Like this, pull bar 18 can drive transmission mechanism by shift fork and axially move forward when (among Fig. 6 to the right) is mobile vertically backward so that the gear ring of the driven wheel of transmission mechanism on engine flywheel moves and with its engagement.Otherwise pull bar 18 is when (among Fig. 6 left) is mobile vertically forward, and it is axially mobile backward to drive transmission mechanism by shift fork, so that the driven wheel of transmission mechanism breaks away from the gear ring on the engine flywheel.
Fixing lance 20 in the roughly front portion of armature 16.The front portion of lance 20 can be inserted in the rear portion of pull bar 18, to help pull bar 18 with respect to the location of armature 16 and fixing.The middle part of lance 20 is fixed in the corresponding site of armature 16.The rear portion of lance 20 extends in the axial ccontaining through hole in the armature 16.
In the guide through hole of the ccontaining through hole of armature 16 and electromagnetic core 4, arranging switch shaft 12, this switch shaft 12 can move axially with respect to armature 16 and electromagnetic core 4.Can realize the guiding of switch shaft 12 in armature 16 and electromagnetic core 4 by the pilot sleeve 13 around switch shaft 12 peripheries, help to increase the space between the outer peripheral face of the internal perisporium of guide through hole of electromagnetic core 4 and switch shaft 12 simultaneously, so that the magnetic gap between electromagnetic core 4 and the switch shaft 12 strengthens, thereby the influence of the magnetic circuit that 12 pairs of solenoids of switch shaft 6 produce reduces.
Be loaded on roughly frustoconical part 4c of the front end of switch shaft 12 and electromagnetic core 4() front end between first back-moving spring 32 apply forward power to switch shaft 12 so that under the non-operating state of electromagnetic switch, switch shaft 12 is maintained at its most preceding original position.
Second back-moving spring 34 that is loaded in ccontaining through hole between the front end of armature 16 and switch shaft 12 applies forward power to armature 16, so that under the non-operating state of electromagnetic switch, armature 16 is maintained at its most preceding original position.
The front portion of switch shaft 12 is arranged in the ccontaining through hole of armature 16, and the guide through hole of electromagnetic core 4 is passed at the middle part of switch shaft 12, and expose from the rear end face of electromagnetic core 4 rear end of switch shaft 12.
In the rear end of switch shaft 12 contact bridge 14 is housed.Particularly, in mode in axial sliding mount pad 15 is housed on the rear portion of switch shaft 12, mount pad 15 is carrying contact bridge 14.
In addition, suit the 3rd back-moving spring 36 on switch shaft 12, it is between the rear end and mount pad 15 of pilot sleeve 13.Can resist the thrust of the 3rd back-moving spring 36 and on switch shaft 12, axially move forward (slip) by the contact bridge 14 that mount pad 15 is carrying, but the securing member 17 that contact bridge 14 movement backward will be fixed on switch shaft 12 rear ends stops.
Usually the cap 8 that is made of plastics is fixed on the rear portion of housing 2, and two binding post 10 break-through caps 8 and being fixed in wherein.The front end enlarged portion of each binding post 10 constitutes contact jaw 10a, and the front end face of two contact jaw 10a is facing to the rear surface of contact bridge 14.The front portion of each binding post 10 is fixed in the cap 8, and the rear portion is exposed from the rear surface of cap 8 and constituted terminals.
As shown in Figure 6, the rear end of electromagnetic core 4 (large-diameter portion divides 4a) is clamped in the rear end part of housing 2 by cap clamp structure shown in Figure 3 with the front end 8a of cap 8.For this reason, referring to Fig. 9, be formed with the lightening holes 2c that reduces wall thickness with respect to body 2a in the back of the general cylindrical shape body 2a of housing 2.Between body 2a and lightening holes 2c, produce towards first group (at least two of rear side, for example three) circumferential first limiting section 25 spaced apart and equally towards a group (at least two of rear side, for example three, quantity equates with second limiting section 26) circumferential second limiting section 26 spaced apart.Described one group of first limiting section 25 is along circumferentially uniform and all be positioned at first plane vertical with the central axis of housing 2, described one group of second limiting section 26 be also along circumferentially uniform and all be positioned at second plane vertical with the central axis of housing 2, and first plane is positioned at position after axially leaning on respect to second plane.Each first limiting section 25 and second limiting section 26 upwards were alternately distributed each other in week, and adjacent first limiting section 25 and corresponding second limiting section 26 between the two limit groove 27, were used for the corresponding circular arc flange part 4d of ccontaining electromagnetic core 4.Therefore, the quantity of each circular arc flange part 4d equates with groove 27, and has the size and dimension that is suitable for being placed in the groove 27.
Each first and second limiting section upwards can extend one section radian continuously in week, for example the form of arc section shown in the figure (like this, each first and second limiting section forms the step surface towards rear side respectively), or discontinuous extension, for example formed by a plurality of discrete sections.
The rear end of lightening holes 2c is suitable for that the back forms the rear end flange 24 that extends radially inwardly in housing 2 that electromagnetic core 4 and cap 8 are packed into.Therefore, although be appreciated that among Fig. 9 and just drawn rear end flange 24, it is actually, and assembling electromagnetic switch process just is formed.
Referring to Fig. 3,6, the rear end (large-diameter portion divides 4a) of the front end 8a of cap 8 and electromagnetic core 4 remains in the rear end part of housing 2 by means of rear end flange 24, arranging flexible member 30 and dish spring 21 between the two, wherein, flexible member 30 is positioned at the rear side of electromagnetic core 4, dish spring 21 is positioned at the rear side of flexible member 30, and cap 8 is positioned at the rear side of dish spring 21.
The two periphery of cap 8, dish spring 21 is located to be fixed in one group of circumferential primary importance (one of them is shown in the lower portion among Fig. 6) and is clamped between first limiting section 25 and rear end flange 24 of housing 2.Cap 8, dish spring 21, electromagnetic core 4 threes' periphery is located by flexible member 30 between by second limiting section 26 and rear end flange 24 of resilient clamp at housing 2 in one group of circumferential second place (one of them is shown in the upper portion among Fig. 6).
Because the body of housing 2 has enough wall thickness, even therefore only circumferentially first limiting section 25 spaced apart is through dish spring 21 fixed support cap 8 vertically by one group, cap 8 still can remain in the housing 2 with high strength.
In execution mode shown in Figure 6, flexible member 30 adopts the form of the packing ring of rubber, silica gel elastomeric material.Referring to Figure 10, the packing ring that constitutes flexible member 30 comprises whole circle annular inner ring 30a and the one group of arc section 30b that radially outward gives prominence to from inner ring 30a.Arc section 30b is suitable for inserting in the groove 27 of housing 2, so quantity equates with groove 27.The axial width of packing ring, especially arc section 30b deducts the axial width of circular arc flange part 4d greater than groove 27 axial depth.
An example of dish spring 21 is shown among Figure 11.This dish spring 21 has gap segments 21a, so that dish spring 21 is easily by axial crushing deformation.
With reference to Fig. 6, when electromagnetic core 4 and cap 8 are installed in the housing 2, at first electromagnetic core 4 is put into housing 2 in the mode of its frustoconical part 4c face forward from the rear end of housing 2, so that each circular arc flange part 4d of electromagnetic core 4 inserts in the respective groove 27 of housing 2.The front surface of each circular arc flange part 4d pushes against in second limiting section 26.
Then, switch shaft 12 is passed guide through hole in the electromagnetic core 4, contact bridge 14 is installed to the rear end of switch shaft 12 by mount pad 15 and securing member 17.
Then, flexible member 30 is put into housing 2 from the rear end of housing 2, make each arc section 30b insert in the respective groove 27 of housing 2.
Then, dish spring 21 is enclosed within on the annular locating flange 8c of cap 8, again cap 8 is packed in the housing 2 with its front end 8a.Then, cap 8 is pushed forward with certain axial force, so that the front surface of front end 8a is pushed on dish spring 21 and therefore axially pushes flexible member 30 forward, thereby make flexible member 30 that certain axial crushing deformation take place, be urged on each first limiting section 25 and by complete axial compression until dish spring 21 and become flat.At this moment, flexible member 30 elastic compression amount in the axial direction is less than its maximum possible elastic compression amount, namely do not reach its axial limit decrement and still has further axial elasticity compression deformation ability.In this state, with the radially inwardly contraction distortion and form rear end flange 24 of the rear end part of the lightening holes 2c of housing 2.
Install in the housing 2 or after on the housing 2, just finished the assembling of electromagnetic switch shown in Figure 6 at other element with electromagnetic switch.At this moment, the flange part 4d of electromagnetic core 4 is supported by described one group of second limiting section 26 in its front side, is supported by flexible member 30 at its rear side.Therefore, under normal conditions, electromagnetic core 4 is pushed by flexible member 30 and is resisted against described second limiting section 26.When electromagnetic core 4 was subjected to the axial impact of armature 16, the active force that can trend towards resisting flexible member 30 was axially mobile backward.Owing to be not as prior art, directly to contact between dish spring 21 and the electromagnetic core 4, but by flexible member 30 retainer shafts to separation, therefore, electromagnetic core 4 can directly not strike dish spring 21.When electromagnetic core 4 axially moves backward, can be subjected to the damping action of flexible member 30, thereby the presumable movement of electromagnetic core 4 or the vibration very fast decay get off, long concussion can not appear.On the other hand, the impact of electromagnetic core 4 is attenuated by flexible member 30 and postpones, and just is delivered to cap 8 through dish spring 21 then.Because the front end 8a of cap 8 is securely held between rear end flange 24 and first limiting section 25, so this decay and the impact that postponed can not cause cap 8 play backward.Like this, can be in prior art because of the cap play cause electric current moment in the motor main circuit fall suddenly and contact bridge and binding post between ablate and problem such as adhesion.
Be appreciated that scheme as an alternative, in the electromagnetic switch in Fig. 6, also can adopt the cap clamp structure shown in Fig. 4 or Fig. 5.
As previously mentioned, flexible member 30 can adopt other form, for example the form of the wavy spring shown in Figure 12.This wavy spring can be made by the elastic metallic sheet material, the one group of arc section 30b that has annular inner ring 30a and radially outward give prominence to from inner ring 30a.Arc section 30b is suitable for inserting in the groove 27 of housing 2, and quantity equates with groove 27.
Each arc section 30b has the profile of undulate vertically, so that wavy spring has the axial elasticity deformation ability.In addition, this wavy spring has gap segments 30c, so that it is easier of axial crushing deformation.
The flexible member 30 of other suitable form also can be conceived out.
By simulation and experiment, can confirm, according to the electromagnetic switch of prior art, when armature bump electromagnetic core, tangible axial endplay appears in cap, may cause breaking away between contact bridge and the binding post, thereby the main circuit that causes motor takes place by opening circuit of moment.Electric current moment that this moment opens circuit in the main circuit that can cause motor falls suddenly, thereby may influence the operation of motor.Simultaneously, between contact bridge and binding post, can produce electric arc, thereby causing to produce between contact bridge and the binding post ablates and adhesion.
On the contrary, according to the application, when armature bump electromagnetic core, because not by the cushioning effect of the flexible member of complete axial compression, the obvious axial endplay that cap can not occur, it is hereby ensured between contact bridge and the binding post can not break away from, thereby opening circuit of moment takes place in the main circuit that can not cause motor.Therefore, in the prior art in the motor main circuit electric current moment fall suddenly and contact bridge and binding post between ablate and the problem of adhesion is all avoided.
The application's other side relates to the electromagnetic switch with aforementioned structure and the vehicle starter that comprises this electromagnetic switch.
Though described the application, the details shown in the application's scope is not limited to reference to concrete execution mode here.Under the situation of the basic principle that does not depart from the application, can make various modifications at these details.
Claims (10)
1. electromagnetic switch that is used for vehicle starter comprises:
Housing, it limits axial and circumferential;
Cap, it is supporting a pairs of posts, and the front end of described cap is fixed in the housing;
Electromagnetic core, it is installed in the described housing, is positioned at described cap front; And
Flexible member, it is folded between the front end and described electromagnetic core of described cap;
It is characterized in that, limit circumferentially one group of first limiting section spaced apart in the described housing at one group of circumferential primary importance place;
The front end of described cap is fixed at described one group of circumferential primary importance place and is held between the flange that radially bends inwards of described first limiting section and housing rear end;
The front end of described cap is pushed against in described flange by described flexible member at one group of circumferential second place place, and each circumferential second place lays respectively between two adjacent circumferential primary importances.
2. electromagnetic switch as claimed in claim 1, it is characterized in that, limit circumferentially one group of second limiting section spaced apart at described one group of circumferential second place place in the described housing, described electromagnetic core is pushed against in described one group of second limiting section by described flexible member.
3. electromagnetic switch as claimed in claim 2, it is characterized in that, described one group of first limiting section is along circumferentially uniform and be positioned at first plane vertical with the central axis of housing, also along circumferentially uniform and be positioned at second plane vertical with the central axis of housing, second plane is positioned at the position of axial front side to described one group of second limiting section with respect to first plane.
4. electromagnetic switch as claimed in claim 3 is characterized in that, each second limiting section and adjacent two first limiting sections limit groove;
The periphery of described electromagnetic core is formed with one group of radially outward outstanding circular arc flange part, each circular arc flange part be placed in respectively in the corresponding groove and by described flexible member vertically forward direction push against in corresponding second limiting section.
5. electromagnetic switch as claimed in claim 4, it is characterized in that, one group of arc section that described flexible member has inner ring and radially outward gives prominence to from inner ring, the mode that each arc section is compressed with axial elasticity is placed in the corresponding groove, and the axial elasticity decrement of each arc section is less than its limit axial compression amount.
6. electromagnetic switch as claimed in claim 1 is characterized in that, also comprises solenoid, described electromagnetic core by described flexible member vertically forward direction push against in described solenoid.
7. as each described electromagnetic switch in the claim 1 to 6, it is characterized in that, also comprise the dish spring, described dish spring at described one group of circumferential primary importance place by axial compression fully between described cap and described one group of first limiting section, at described one group of circumferential second place place between described cap and described flexible member.
8. as each described electromagnetic switch in the claim 1 to 6, it is characterized in that the front end of described cap is formed with the annular locating flange that axially extends forward, be used for keeping the position of described flexible member.
9. as each described electromagnetic switch in the claim 1 to 6, it is characterized in that described flexible member is one of the following: wavy spring, dish spring, helical spring, cluster spring, rubber parts.
10. vehicle starter comprises:
Motor;
The transmission mechanism that links to each other with the output shaft of motor; And
Electromagnetic switch, it controls the operation of described motor and transmission mechanism;
It is characterized in that described electromagnetic switch is as each described electromagnetic switch in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320035320 CN203055800U (en) | 2013-01-23 | 2013-01-23 | Electromagnetic switch and vehicle starter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320035320 CN203055800U (en) | 2013-01-23 | 2013-01-23 | Electromagnetic switch and vehicle starter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203055800U true CN203055800U (en) | 2013-07-10 |
Family
ID=48738727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320035320 Withdrawn - After Issue CN203055800U (en) | 2013-01-23 | 2013-01-23 | Electromagnetic switch and vehicle starter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203055800U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943415A (en) * | 2013-01-23 | 2014-07-23 | 博世汽车部件(长沙)有限公司 | Electromagnetic switch and vehicle starter |
-
2013
- 2013-01-23 CN CN 201320035320 patent/CN203055800U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943415A (en) * | 2013-01-23 | 2014-07-23 | 博世汽车部件(长沙)有限公司 | Electromagnetic switch and vehicle starter |
| CN103943415B (en) * | 2013-01-23 | 2017-06-23 | 博世汽车部件(长沙)有限公司 | Electromagnetic switch and vehicle starter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101699294B1 (en) | Vibration isolation mount for an electric motor | |
| CN102900805A (en) | Electromagnetic suspension | |
| CN203055800U (en) | Electromagnetic switch and vehicle starter | |
| CN103943415A (en) | Electromagnetic switch and vehicle starter | |
| JP2008008293A (en) | Starter for heat engine | |
| CN103943414B (en) | Electromagnetic switch and vehicle starter | |
| CN202534604U (en) | Vehicle starter and electromagnetic switch thereof | |
| CN203055801U (en) | Electromagnetic switch and vehicle starter | |
| CN103426691A (en) | Vehicle starter and electromagnetic switch thereof | |
| CN101539180A (en) | Rubber damper | |
| CN203257924U (en) | Clutch integrally connected with flywheel | |
| CN102720743A (en) | Elastic retainer ring | |
| CN202948889U (en) | Integral electromagnetic switch for new energy automobile | |
| CN206072236U (en) | A kind of double mass flywheel structure with bushing | |
| CN202276211U (en) | Rotor structure of aviation permanent magnet synchronous alternator | |
| CN202798219U (en) | Rotor structure of motor | |
| CN201184390Y (en) | Rubber shock absorber | |
| CN204921844U (en) | Two quality flywheels and car | |
| CN201352533Y (en) | Integral type starter electromagnetic switch | |
| CN103854927B (en) | Vehicle starter and its electromagnetic switch | |
| JP5039170B2 (en) | Electromagnet device for starter | |
| KR101380962B1 (en) | Motor of rotaional shaft shock-absorbing device | |
| CN202259487U (en) | Fixed structure of battery pack in shell | |
| CN202274006U (en) | Centering slide sleeve of motorcycle clutch | |
| CN204164216U (en) | A kind of clutch for car air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130710 Effective date of abandoning: 20170623 |