CN205194623U - Electromagnetic switch and contain its flexible meshing starter - Google Patents

Abstract

The utility model relates to a flexible meshing starter, flexible meshing starter contains electromagnetic switch, electromagnetic switch includes the casing, the coil pack, end the seat, support the lid, binding post, move the iron core, return spring and movable contact dish, coil pack and end the seat and fix inside the casing, it fixes on the casing and is located the one side of ending the seat to support the lid, binding post fixes in the inside of supporting the lid, move the iron core and slide the setting on the casing, the setting of return spring one end is on moving the iron core, other end setting ends on the seat, the movable contact dish sets up at a spindle, the dabber slides and sets up on ending the seat, one end is with to move the iron core relative, the other end is connected through a return spare between covering with the support, the dabber with move the iron core for separately design, and end the seat or / and have the magnetic leakage structure on moving the iron core. The utility model discloses having increased electromagnetic switch's magnetic leakage, having reduced the apical tooth of starter and done all can, reduced the wearing and tearing of ring gear, improved life, the noise is little during the simultaneous firing engine.

Description

Electromagnetic switch and comprise its flexible engagement starter

Technical field

The utility model relates to starter technical field, particularly relates to a kind of electromagnetic switch of flexible engagement starter.

Background technology

Fig. 1 is the common flexible engagement starter of prior art, this starter generally comprises electromagnetic switch 1, shifting fork mechanism 2, isolator 3, driving shaft 4, driven wheel 5, casing 7, gear reduction mechanism 8, motor 9 etc., after electromagnetic switch energising, under the attraction effect that plunger produces at solenoid winding, promote isolator 3 by shifting fork mechanism 2, driven wheel 5 is moved towards the gear ring of engine flywheel 6.

Electromagnetic switch 1 mainly comprises: the housing 11 playing support and electric action; Be fixed on the only seat coil block 12 of enclosure interior; Play the supporting cover 13 of support and sealing function; Be fixed on the binding post 14 of supporting cover 13 inside; Play the dynamic iron core 15 of control action and play the spring 16 of return effect; The dynamic tactile disk 17 etc. being used for control circuit go side is coordinated with terminal.After car load ignition switch is connected, only seat coil block 12 produces electromagnetic force in dynamic iron core 15, thus dynamic iron core 15 is moved to supporting cover 13 direction, and drives dynamic tactile disk 17 to move until be mechanically connected and be electrically connected to binding post 14 direction.Connect the main circuit of starter thus and drive motors 6 rotates.After dynamic tactile disk 17 touches two binding posts 14 and set up electrical connection between two binding posts, dynamic iron core 15 will continue to drive the mandrel of dynamic tactile disk to move a bit of overtravel distance, until dynamic iron core 15 is prevented from.The leading portion of dynamic iron core 15 pulls drive mechanism by shifting fork mechanism 2 during this period, thus driven wheel 5 is moved forward until engage with the gear ring on engine flywheel 6, pilots engine thus.

But, electromagnetic switch due to prior art adopts switch magnetic leakage free to design mostly, when the soft engaging force moment preserving of guarantee starter, the apical tooth power of starter cannot be reduced, when the degree of wear adding engine flywheel gear ring end face is piloted engine simultaneously, noise is larger, life-span is low, and volume of switch is large, and range of application is little.

Utility model content

Technical problem to be solved in the utility model is, a kind of electromagnetic switch is provided, less to overcome existing switch magnetic flux leakage, when the soft engaging force moment preserving of guarantee starter, cannot reduce the apical tooth power of starter, when the degree of wear adding engine flywheel gear ring end face is piloted engine simultaneously, noise is large, and the life-span is low, volume of switch is large, the problem that range of application is little.

In order to solve the problems of the technologies described above, electromagnetic switch of the present utility model, comprise housing, coil block, only seat, supporting cover, binding post, dynamic iron core, return spring and dynamic tactile disk, coil block and only seat are fixed on enclosure interior, supporting cover to be fixed on housing and to be positioned at the side of only seat, binding post is fixed on the inside of supporting cover, dynamic iron core is slidably arranged on housing, return spring one end is arranged on dynamic iron core, the other end is arranged on and stops on seat, described dynamic tactile disk is arranged on a mandrel, described mandrel is slidably arranged on described only seat, one end is relative with described dynamic iron core, be connected by a return part between the other end with described supporting cover, described mandrel designs for separating with described dynamic iron core, and described only seat and/or described dynamic iron core have leakage field structure.

Above-mentioned electromagnetic switch, wherein, described dynamic iron core comprises connecting portion, auxiliary section, junction surface and leakage field portion.Connecting portion matches with a shifting fork mechanism.Match with described housing in auxiliary section.Junction surface engages with described return spring.Leakage field portion has at least one first groove.Described leakage field portion is less than the radial dimension of described auxiliary section to form leakage field structure described in the radial dimension of described first groove.

Above-mentioned electromagnetic switch, wherein, described first groove is axial notch, extending towards direction, place, described junction surface vertically with the described only end face that seat is relative from described leakage field portion.

Above-mentioned electromagnetic switch, wherein, described first groove is radial groove, radially extends towards the direction, place, center of described dynamic iron core from the outer rim in described leakage field portion.

Above-mentioned electromagnetic switch, wherein, the shape of described first groove is oval, square or rectangular.

Above-mentioned electromagnetic switch, wherein, described only seat comprises First body and the second pedestal portion.First body is relative with described dynamic iron core.Second pedestal portion contacts with described housing and described supporting cover.Described First body has at least one second groove, and described First body is less than the diameter of described First body to form leakage field structure described in the radial dimension of described second groove.

Above-mentioned electromagnetic switch, wherein, described second groove is axial notch, extends vertically from the end face relative with described leakage field portion of described First body towards described second direction, place, pedestal portion.

Above-mentioned electromagnetic switch, wherein, described second groove is radial groove, radially extends towards the direction, place, center of described mandrel from the outer rim of described First body.

Above-mentioned electromagnetic switch, wherein, the shape of described second groove is oval, square or rectangular.

The utility model provides a kind of flexible engagement starter further, comprises above-mentioned electromagnetic switch.

Beneficial functional of the present utility model is: designed by mandrel and separating of dynamic iron core, and leakage field structure is set on only seat and/or dynamic iron core, add the leakage field of electromagnetic switch, and then reduce the apical tooth power of starter, effectively can reduce the wearing and tearing of gear ring, improve useful life, due to the decline of apical tooth power, reduce energy when driven wheel is got, the noise produced when reducing starting, also improve the success rate that driven wheel engages with engine flywheel gear ring simultaneously.

Below in conjunction with the drawings and specific embodiments, the utility model is described in detail, but not as to restriction of the present utility model.

Accompanying drawing explanation

Fig. 1 is the flexible engagement starter structure chart of prior art;

Fig. 2 is the structure chart of the electromagnetic switch of the utility model one embodiment;

Fig. 3 is the structure chart of the dynamic iron core in Fig. 2;

Fig. 4 is the structure chart of the electromagnetic switch of another embodiment of the utility model;

Fig. 5 is iron core or stops the end view of seat.

Wherein, Reference numeral

1-electromagnetic switch

11-housing

12-only seat coil block

13-supporting cover

14-binding post

15-dynamic iron core

16-spring

17-dynamic tactile disk

2-shifting fork mechanism

3-isolator

4-driving shaft

5-driven wheel

6-flywheel

7-casing

8-gear reduction mechanism

9-motor

100-electromagnetic switch

101-housing

101a-riveted joint face

102-coil block

103-only seat

1031-First body

1032-the second pedestal portion

104-supporting cover

105a, 105b-binding post

106-dynamic iron core

1061-connecting portion

10611-hole

1062-auxiliary section

1063-junction surface

1064-leakage field portion

107-return spring

108-mandrel

109-dynamic tactile disk

110-return part

121-the first groove

122-the second groove

Embodiment

Below in conjunction with the drawings and specific embodiments, technical solutions of the utility model are described in detail, further to understand the purpose of this utility model, scheme and effect, but not as the restriction of the utility model claims protection range.

Consult Fig. 2, electromagnetic switch 100 of the present utility model, comprise housing 101, coil block 102, only seat 103, supporting cover 104, binding post 105a, 105b, dynamic iron core 106, return spring 107, mandrel 108 and dynamic tactile disk 109, it is inner that coil block 102 and only seat 103 are fixed on housing 101, supporting cover 104 to be fixed on housing 101 and the side being arranged in only seat 103 (as the right side of Fig. 2, in Fig. 2, supporting cover 104 is fixed by the riveted joint face 101a of housing 101), binding post 105a, 105b is fixed on the inside of supporting cover 104, dynamic iron core 106 is slidably arranged on housing 101, return spring 107 one end is arranged on dynamic iron core 106, the other end is arranged on and stops on seat 103, dynamic tactile disk 109 is arranged on mandrel 108, mandrel 108 is slidably arranged in and stops on seat 103, one end is relative with dynamic iron core 106, be connected (return part 110 is preferably spring) by return part 110 between the other end with supporting cover 104, mandrel 108 designs for separating with dynamic iron core 106, and dynamic iron core 106 has leakage field structure.

In conjunction with consulting Fig. 3 and Fig. 5, dynamic iron core 106 comprises connecting portion 1061, auxiliary section 1062, junction surface 1063 and leakage field portion 1064.Connecting portion 1061 matches (see Fig. 1) with a shifting fork mechanism 2, for dragging and retracting starter driving gear, connecting portion 1061 with the fit system of shifting fork mechanism 2 can be: connecting portion 1061 has hole 10611, acting as of hole 10611 coordinates with shifting fork mechanism 2, certainly, connecting portion 1061 is not limited thereto with the fit system of shifting fork mechanism 2.Matching with housing 101 in auxiliary section 1062, act as to act on coil block 102 to produce electromagnetic force, outwards gets for pulling isolator 3 (see Fig. 1).Junction surface 1063 engages with return spring 107.In conjunction with consulting Fig. 5, leakage field portion 1064 has at least one first groove 121, the radial dimension of leakage field portion 1064 in the first groove 121 place is less than the radial dimension of auxiliary section 1062 to form leakage field structure.First groove 121 is axial notch, extends vertically from the end face relative with only seat 103 in leakage field portion 1064 towards direction, place, junction surface 1063.Certainly, the first groove 121 can be also radial groove, is positioned on the end face relative with only seat 103 in leakage field portion 1064, radially extends towards the direction, place, center of dynamic iron core 106 from the outer rim in leakage field portion 1064.The shape of the first groove 121 can be oval, square or rectangular.The design of the first groove 121 adds the leakage field of electromagnetic switch 100, and then reduces starter apical tooth power, effectively can reduce the shock of driven wheel and engine flywheel gear ring, reduce noise when starter is piloted engine.

And, by the design of the first groove 121 on dynamic iron core 106, the electromagnetic force of electromagnetic switch 100 can be reduced when not changing coil resistance, and then not change the object of soft engagement moment while realizing reducing apical tooth power.

Consult the structure chart of the electromagnetic switch of another embodiment of Fig. 4 the utility model, in conjunction with consulting Fig. 5, the electromagnetic switch of this embodiment has the structure roughly the same with electromagnetic switch in Fig. 2, and difference is: only seat 103 also has leakage field structure.Specifically, only seat 103 comprises First body 1031 and the second pedestal portion 1032.First body 1031 is relative with dynamic iron core 106.Second pedestal portion 1032 contacts with housing 101 and supporting cover 104.Leakage field vibrational power flow, on First body 1031, specifically, First body 1031 has the radial dimension of at least one second groove 122, first pedestal 1031 in the second groove 122 place and is less than the diameter of First body 1031 to form leakage field structure.Second groove 122 is axial notch, extends vertically from the end face relative with leakage field portion 1064 of First body 1031 towards the second direction, place, pedestal portion 1032.Certainly, the second groove 122 can be also radial groove, is arranged on the end face relative with leakage field portion 1064 of First body 1031, radially extends towards the direction, place, center of mandrel 108 from the outer rim of First body 1031.The shape of the second groove 122 can be oval, square or rectangular.Such design can add the leakage field of electromagnetic switch 100 when adhesive equally, and then reduces the apical tooth power of starter, does not change the object of engagement moment while realizing reducing apical tooth power equally.

Although the embodiment shown in Fig. 2 gives leakage field vibrational power flow on dynamic iron core 106, embodiment shown in Fig. 4 gives leakage field vibrational power flow on dynamic iron core 106 and only on seat 103, but be not limited thereto in actual applications, also leakage field structure only can be arranged and stop on seat 103.

After flexible engagement starter adopts above-mentioned electromagnetic switch 100, when electromagnetic switch coil block 102 electric after electromagnetic force is to the right produced to dynamic iron core 106, dynamic iron core 106 compression retracteding position spring 107 under the effect of electromagnetic force moves to the right, after a mobile segment distance, dynamic iron core 106 contacts with mandrel 108, now, dynamic iron core 106, mandrel 108, dynamic tactile disk 109 moves right jointly, dynamic tactile disk 109 and binding post 105a after a mobile segment distance, 105b is jointly mechanically connected and is electrically connected, now motor main circuit is connected, but, now dynamic iron core 106 moves until contact owing to also not contacting with only seat 103 and continuing side backward.Complete coil block 102 electromagnetic force after starting to disappear, dynamic iron core 106, under the effect of return spring 107, returns to initial position.

Certainly; the utility model also can have other various embodiments; when not deviating from the utility model spirit and essence thereof; those of ordinary skill in the art are when making various corresponding change and distortion according to the utility model, but these change accordingly and are out of shape the protection range that all should belong to the claim appended by the utility model.

Claims (10)

1. an electromagnetic switch, comprise housing, coil block, only seat, supporting cover, binding post, dynamic iron core, return spring and dynamic tactile disk, coil block and only seat are fixed on enclosure interior, supporting cover to be fixed on housing and to be positioned at the side of only seat, binding post is fixed on the inside of supporting cover, dynamic iron core is slidably arranged on housing, return spring one end is arranged on dynamic iron core, the other end is arranged on and stops on seat, it is characterized in that, described dynamic tactile disk is arranged on a mandrel, described mandrel is slidably arranged on described only seat, one end is relative with described dynamic iron core, be connected by a return part between the other end with described supporting cover, described mandrel designs for separating with described dynamic iron core, and described only seat and/or described dynamic iron core have leakage field structure.

2. electromagnetic switch according to claim 1, is characterized in that, described dynamic iron core comprises:

Connecting portion, matches with a shifting fork mechanism;

Auxiliary section, matches with described housing;

Junction surface, engages with described return spring; And

Leakage field portion, it has at least one first groove;

Wherein, described leakage field portion is less than the radial dimension of described auxiliary section to form leakage field structure described in the radial dimension of described first groove.

3. electromagnetic switch according to claim 2, is characterized in that, described first groove is axial notch, extending towards direction, place, described junction surface vertically with the described only end face that seat is relative from described leakage field portion.

4. electromagnetic switch according to claim 2, is characterized in that, described first groove is radial groove, radially extends towards the direction, place, center of described dynamic iron core from the outer rim in described leakage field portion.

5. electromagnetic switch according to claim 2, is characterized in that, the shape of described first groove is oval, square or rectangular.

6. electromagnetic switch according to claim 1 and 2, is characterized in that, described only seat comprises:

First body is relative with described dynamic iron core; And

Second pedestal portion, contacts with described housing and described supporting cover;

Wherein, described First body has at least one second groove, described First body is less than the diameter of described First body to form leakage field structure described in the radial dimension of described second groove.

7. electromagnetic switch according to claim 6, is characterized in that, described second groove is axial notch, extends vertically from the end face relative with described leakage field portion of described First body towards described second direction, place, pedestal portion.

8. electromagnetic switch according to claim 6, is characterized in that, described second groove is radial groove, radially extends towards the direction, place, center of described mandrel from the outer rim of described First body.

9. electromagnetic switch according to claim 6, is characterized in that, the shape of described second groove is oval, square or rectangular.

10. a flexible engagement starter, comprises the electromagnetic switch in claim 1-9 described in any one.