CN207834130U - Electromagnetic switch and starter - Google Patents

Abstract

The utility model discloses a kind of electromagnetic switch and starters, the electromagnetic switch includes shell, the electromagnetic coil in the shell and the dynamic iron core moved under the magneticaction of the electromagnetic coil, it further include the movable contact rod driven by the dynamic iron core positioned at one end of the dynamic iron core, the movable contact rod is through in the moving contact pole socket with axis hole, and antirust sheath is cased on the part of the movable contact rod being through in the moving contact pole socket.Electromagnetic switch provided by the utility model and starter can occur catching phenomenon because getting rusty, to ensure the normal work of electromagnetic switch to avoid between the movable contact rod and moving contact pole socket of electromagnetic switch.

Description

Electromagnetic switch and starter

Technical field

The utility model is related to technical field of vehicle, more particularly to a kind of electromagnetic switch and starter.

Background technology

Currently, the starting of automobile engine is realized by external force, a kind of more typical start mode is to pass through vapour Vehicle starter is started.Existing automobile starter includes：Armature, the electromagnetic switch being electrically connected with armature, in electromagnetic switch Portion's electromagnetic coil is powered, and dynamic iron core moves under magnetic fields, and dynamic iron core drives driving gear and automobile engine by shift fork Flywheel gear engagement, while the movement of dynamic iron core may make moving contact to be connected with the static contact for being connected to battery, armature energization, Armature drives the rotation of sliding tooth wheel, thus by car engine start.It is opened as it can be seen that electromagnetic switch is control on automobile starter It closes, is one of three big component of starter, for releasing driving gear, it is made to be engaged with flywheel ring gear, while also there is switch Effect.When the static contact of electromagnetic switch and moving contact are closed, starter main circuit is connected, the armature of starter is made to rotate.Cause This electromagnetic switch is the critical component of automobile starter, its quality will directly affect the performance of automobile starter.

But in existing starter relay, moving contact is arranged in movable contact rod, and movable contact rod is through movable contact rod It is moved in the axis hole of seat and under the driving of dynamic iron core, and since movable contact rod and moving contact pole socket are generally iron and steel material quality, During use, ambient humidity is big or water inlet can all make movable contact rod and moving contact pole socket get rusty, clamping stagnation occurs, and can cause in this way Dynamic iron core movement is not in place, and shift fork pop-up is abnormal, and driving gear can not be engaged with flywheel ring gear, while moving contact movement is not In place, with static contact poor contact, starter motor main circuit is not turned on, and starter can not work normally.

Utility model content

In view of this, the utility model is directed to a kind of electromagnetic switch and starter, to solve electromagnetism in the prior art With moving contact pole socket occurs for the movable contact rod of switch the problem of clamping stagnation causes starter can not work normally.

In order to achieve the above objectives, the technical solution of the utility model is realized in：

The utility model provides a kind of electromagnetic switch, and the electromagnetic switch includes shell, the electromagnetism in the shell Coil and the dynamic iron core moved under the magneticaction of the electromagnetic coil further include positioned at one end of the dynamic iron core by institute The movable contact rod of dynamic iron core driving is stated, the movable contact rod is through in the moving contact pole socket with axis hole, the movable contact rod It is cased with antirust sheath on the part being through in the moving contact pole socket.

Further, the first cavity, the moving contact pole socket back of the body are formed between the dynamic iron core and the moving contact pole socket Side from the dynamic iron core forms the second cavity, the movable contact rod from first cavity through the moving contact pole socket to Second cavity, wherein be provided on the wall of the antirust sheath and be connected to the logical of first cavity and second cavity Stomata.

Further, the venthole is described from the end face that one end end face of the antirust sheath extends to the other end Venthole is circumferentially spaced be provided with it is multiple.

Further, covering is provided with waterproof ventilated membrane on the venthole.

Further, it is provided with protrusion on the inner wall of the antirust sheath, is provided on the outer surface of the movable contact rod The protrusion of groove, the antirust sheath is stuck in the groove.

Further, the electromagnetic switch further includes the fixed static contact of the relatively described shell and setting described dynamic tactile Moving contact on head rod can be contacted with the static contact by the movement of the movable contact rod, the static contact is described dynamic The side far from the dynamic iron core of contact,；

Wherein, be set as under the active force when being touched with the static contact can be relative to the moving contact for the moving contact Bar is moved to the direction far from the static contact, in being provided with for institute close to the side of the dynamic iron core for the moving contact It states moving contact and applies first spring of the elastic force to keep the moving contact to be contacted with the static contact.

Further, the first flange and the second flange, the moving contact and described first are provided in the movable contact rod Spring pocket is on the part between first flange and second flange of the movable contact rod；

Wherein, relatively described second flange of first flange is located at institute closer to the dynamic iron core, the antirust sheath State movable contact rod from the part that first flange extends towards the dynamic iron core.

Further, it is provided with gap between the antirust sheath and first flange.

Further, the dynamic iron core and the movable contact rod split settings, the electromagnetic switch further include so that described The (the first back-moving spring that movable contact rod resets and the second back-moving spring that the dynamic iron core is resetted；

Alternatively, the dynamic iron core is fixedly connected with the movable contact rod, the electromagnetic switch includes for so that described dynamic The resetting spring that iron core and the movable contact rod reset together.

In electromagnetic switch provided by the utility model, setting antirust sheath is sleeved in movable contact rod, can make metal material The movable contact rod of matter is isolated with steam, and movable contact rod is avoided to get rusty, prevent caused by getting rusty movable contact rod and moving contact pole socket it Between there is catching phenomenon.And movable contact rod can also be reduced using antirust sheath and rubbed with what moving contact pole socket relative motion generated Wipe power so that movable contact rod and the relative motion of moving contact pole socket are more smooth.

Another aspect according to the present utility model, also provides a kind of starter, and the starter is provided with as described above Electromagnetic switch.

The starter is identical as advantage possessed by above-mentioned electromagnetic switch compared with the existing technology, no longer superfluous herein It states.

Other features and advantages of the utility model will be described in detail in subsequent specific embodiment part.

Description of the drawings

The attached drawing for constituting the part of the utility model is used to provide a further understanding of the present invention, this practicality is new The exemplary embodiment and its explanation of type are not constituted improper limits to the present invention for explaining the utility model. In the accompanying drawings：

Fig. 1 is the structural schematic diagram according to electromagnetic switch in an embodiment of the utility model；

Fig. 2 is enlarged drawing at A in Fig. 1；

Fig. 3 is the structural schematic diagram that antirust sheath is provided in movable contact rod；

Fig. 4 is the structural schematic diagram that waterproof ventilated membrane is arranged on antirust sheath.

Reference sign：

1- shells；101- housing bodies；102- lids；2- electromagnetic coils；3- movable contact rods；31- antirust sheaths；311- is logical Stomata；312- protrusions；The first flanges of 32-；The second flanges of 33-；34- annular grooves；35- grooves；36- waterproof ventilated membranes；4- is dynamic to be touched Head rod seat；5- dynamic iron cores；6- moving contacts；7- static contacts；The first springs of 8-；9- (the first back-moving springs；10- second back-moving springs； 11- mobile bars；12- second springs.

Specific implementation mode

Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein Described specific implementation mode is only used for describing and explaining the present invention, and is not intended to limit the utility model.

It should be noted that in the absence of conflict, the spy in embodiment and embodiment in the utility model Sign can be combined with each other.

In the description of the present invention, it should be understood that term "center", " longitudinal direction ", " transverse direction ", "upper", "lower", The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", " axial direction ", " radial direction ", " circumferential direction " To be based on the orientation or positional relationship shown in the drawings, it is merely for convenience of describing the present invention and simplifying the description, without referring to Show or imply that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore cannot manage Solution is limitations of the present invention.In addition, " inside and outside " refers to the inside and outside of the profile relative to each component itself.

In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include at least one this feature.

The utility model provides a kind of electromagnetic switch, as shown in Figure 1, the electromagnetic switch includes shell 1, is located in shell 1 Electromagnetic coil 2 and the dynamic iron core 5 that is moved under the magneticaction of electromagnetic coil 2, further include positioned at one end of dynamic iron core 5 by The movable contact rod 3 that dynamic iron core 5 drives, the movable contact rod 3 are through in the moving contact pole socket 4 with axis hole, wherein movable contact rod It is cased with antirust sheath 31 on 3 part being through in moving contact pole socket 4.

In technical solution provided by the utility model, setting antirust sheath 31 is sleeved in movable contact rod 3, the antirust sheath 31 Preferably plastic sheath, or rubber sheath other can prevent movable contact rod 3 from getting rusty the sheath of material.By that will prevent Rust sheath 31 is sleeved in movable contact rod 3, and the movable contact rod 3 of metal material can be made to be isolated with steam, and movable contact rod 3 is avoided to give birth to Rust, prevents occurring catching phenomenon between movable contact rod 3 and moving contact pole socket 4 caused by getting rusty, and also using antirust sheath 31 The frictional force that movable contact rod 3 is generated with 4 relative motion of moving contact pole socket can be reduced so that movable contact rod 3 and moving contact pole socket 4 Relative motion it is more smooth.

It is further described below according to specific implementation mode and in conjunction with attached drawing to technical solution provided by the utility model.

Electromagnetic switch as shown in Figure 1, in shell 1, electromagnetic coil 2 is arranged around dynamic iron core 5,4 phase of moving contact pole socket Shell 1 is fixed, when electromagnetic coil 2 is powered, dynamic iron core 5 can move under the magnetic force, be moved in dynamic iron core 5 and When movable contact rod 3 contacts, movable contact rod 3 can be pushed to be moved in the axis hole of moving contact pole socket 4.

Antirust sheath 31 is through on the part of movable contact rod 3 moved in the axis hole of moving contact pole socket 4.Preferably, such as Shown in Fig. 2, it is provided with protrusion 312 on the inner wall of antirust sheath 31, is arranged fluted 35 on the outer surface of movable contact rod 3, antirust The protrusion 312 of sheath 31 can be stuck in groove 35 and antirust sheath 31 is avoided to be detached from movable contact rod 3.

Further specifically, the side wall of the separate dynamic iron core 5 of groove 35 is set as being inclined outwardly, and groove 35 is close dynamic The side wall of iron core 5 is set perpendicularly to bottom surface, and such antirust sheath 31 is inserted in from one end of the close dynamic iron core 5 of movable contact rod 3 When, the protrusion 312 of antirust sheath 31 can from groove 35 along the side wall abjection being inclined outwardly enable antirust sheath 31 into One step is inserted in, and can then be deviate from along towards the direction of dynamic iron core 5 to avoid antirust sheath 31 perpendicular to the side wall of bottom surface.

In present embodiment, the first cavity 13 is formed between dynamic iron core 5 and moving contact pole socket 4, moving contact pole socket 4 deviates from The side of dynamic iron core 5 forms the second cavity 14, wherein the first cavity 13, which is dynamic iron core 5 and moving contact pole socket 4, is located at electromagnetism The both ends of coil 2 and the cavity formed in the electromagnetic coil 2, second cavity 14 are moving contact pole socket 4 away from dynamic iron The cavity moved back and forth for the moving contact 6 of electromagnetic switch formed between the side and shell 1 of core 5, shell 1 include shell master Body 101 and lid 102, moving contact pole socket 4 are located at one end of housing body 101, and lid 102 covers on moving contact pole socket 4 and dynamic The second cavity 14 is formed between contact pole socket 4, the static contact 7 of electromagnetic switch is fixed on lid 102, and moving contact 6 is in the second sky It can be moved in chamber and contact or disengage with static contact 7.

Movable contact rod 3 from the first cavity 13 run through 4 to the second cavity 14 of moving contact pole socket, due to movable contact rod 3 be through it is dynamic It may cause the gap between movable contact rod 3 and moving contact pole socket 4 that cannot be vented because of water or expansion etc. reasons in contact pole socket 4, So that the first cavity 13 and the second cavity 14 are completely isolated, moved in this way to the direction of the second cavity 14 in movable contact rod 3 When, in the second cavity 14 pressure increase movable contact rod 3 can be caused to move difficulty, to solve the problems, such as this, in present embodiment, preferably Ground leads to as shown in figure 3, being provided with the venthole 311 of connection the first cavity 13 and the second cavity 14 on the wall of antirust sheath 31 Crossing venthole 311 can so that the air pressure between the first cavity 13 and the second cavity 14 is balanced.

Preferably, venthole 311 is from the end face that one end end face of antirust sheath 31 extends to the other end, the venthole 311 can be multiple along being provided at circumferentially spaced for antirust sheath 31.

Preferably, as shown in Figure 3 and Figure 4, it can be covered on venthole 311 and be provided with waterproof ventilated membrane 36, the waterproof and breathable Film 36 can prevent the water in the first cavity 13 while enabling gas to be connected to from the first cavity 13 with the second cavity 14 Point enter in the second cavity 14, to avoid 14 humidity of the second cavity big and the problems such as cause to get rusty or freeze.

Waterproof ventilated membrane 36 can be arranged on the end face of the first cavity of direction 13 of antirust sheath 31, can also be arranged Towards on the end face of the second cavity 13, or it is respectively provided on two end faces.

The electromagnetic switch includes opposite 1 fixed static contact 7 of shell (as described above, the lid in shell 1 is arranged in static contact 7 On body 102) and moving contact 6 can be contacted with static contact 7 by the movement of movable contact rod 3 is set in movable contact rod 3. Specifically, moving contact 6 may be configured as plate body structure, static contact 7 is arranged there are two and the separate dynamic iron core 5 in moving contact 6 is arranged Side, when dynamic iron core 5 pushes movable contact rod 3 to move, the moving contact 6 in movable contact rod 3 contacts conducting with two static contacts 7.

To avoid moving contact 6 and 7 hard contact of static contact that the shock of moving contact 6 is caused to be broken, it is preferable that moving contact 6 It is set as under the active force when touching with static contact 7 to move to the direction far from static contact 7 relative to movable contact rod 3, The side of the close dynamic iron core 5 of moving contact 6 be provided with for the moving contact 6 apply elastic force to keep moving contact 6 with it is quiet The first spring 8 that contact 7 contacts.Can not only ensure the contact of moving contact and static contact 7 in this way, but can to avoid moving contact 6 with Static contact 7 is collided and is broken.

Further, as shown in Figure 1, being provided with the first flange 32 and the second flange 33 in movable contact rod 3,6 He of moving contact First spring 8 is sleeved on the part between the first flange 32 and the second flange 33 of movable contact rod；Wherein, the first flange 32 Opposite second flange 33 closer to dynamic iron core 5, antirust sheath 31 be located at movable contact rod 3 from the first flange 32 towards dynamic iron core 5 On the part of extension.

First flange 32 and the second flange 33 can process formation directly in movable contact rod 3, or by 32 He of the first flange Second flange 33 is individually processed and is fixed in movable contact rod 3, as shown in figure 3, processing is formed with annular groove in movable contact rod 3 34, the second flange 33 is stuck in annular groove 34 fixed.

Preferably, it is provided with gap between antirust sheath 31 and the first flange 32, can be blocked to avoid the first flange 32 anti- The venthole 311 to become rusty on 31 end face of sheath.

In addition, in present embodiment, 3 split settings of the dynamic iron core 5 and movable contact rod, the electromagnetic switch further include so that The (the first back-moving spring 9 that movable contact rod 3 resets and the second back-moving spring 10 that dynamic iron core 5 is resetted.Electromagnetic coil is powered Afterwards, electromagnetic force be F electromagnetism, 9 elastic force of (the first back-moving spring be F1 springs, 10 elastic force of second back-moving spring be F2 springs, moving contact, Frictional force between 3 and moving contact pole socket 4 rubs for F, and dynamic iron core 5 pulls the power of shift fork to be drawn for F, the air resistance of movement parts movement Power is F vapour locks, for that can drive movable contact rod 3, F electromagnetism ＞ F1 spring+F2 spring+F friction+F drawing+F vapour locks.

Certainly, dynamic iron core 5 and movable contact rod 3 are not limited to split settings, and it is solid with dynamic iron core 5 to may also set up movable contact rod 3 It is scheduled on together, can be arranged in this way so that the resetting spring that the movable contact rod 3 and dynamic iron core 5 reset together.

In addition, being provided with the connecting rod 11 for connecting shift fork in dynamic iron core 5, set between connecting rod 11 and dynamic iron core 5 It is equipped with second spring 12, the contents of the section is the common technology of electromagnetic switch, is not belonging to the emphasis of the utility model, herein no longer It is described in detail.

When electromagnetic switch provided by the utility model is used for the starter of vehicle, the connection of the dynamic iron core 5 of the electromagnetic switch Bar 11 by shift fork with driving gear connect, a static contact 7 of electromagnetic switch is connect with accumulator, another static contact 7 and Armature connects, and the connecting rod 11 of dynamic iron core 5 is connect by shift fork with driving gear.After electromagnetic switch energization, electromagnetic coil 2 produces Raw electromagnetic attraction makes dynamic iron core 5 compress second back-moving spring 10 and pushes movable contact rod 3, and the compression of movable contact rod 3 first resets bullet Spring 9 is moved towards the direction of static contact 7, is engaged with the flywheel ring gear of automobile engine in this way, shift fork can stir driving gear, After the moving contact 6 in movable contact rod 3 contact under the drive of movable contact rod 3 with two static contacts 7 simultaneously, accumulator and armature it Between circuit turn-on, armature rotation, to by car engine start.

Another aspect according to the present utility model, also provides a kind of starter, and the starter is provided with as described above Electromagnetic switch.

The foregoing is merely the better embodiments of the utility model, are not intended to limit the utility model, it is all Within the spirit and principles of the utility model, it is new to should be included in this practicality for any modification, equivalent replacement, improvement and so on Within the protection domain of type.

Claims (10)

1. a kind of electromagnetic switch, the electromagnetic switch include shell (1), the electromagnetic coil (2) being located in the shell (1) and The dynamic iron core (5) moved under the magneticaction of the electromagnetic coil (2), further include positioned at the dynamic iron core (5) one end by The movable contact rod (3) of dynamic iron core (5) driving, the movable contact rod (3) are through in the moving contact pole socket (4) with axis hole, It is characterized in that, being cased with antirust sheath (31) on the part of the movable contact rod (3) being through in the moving contact pole socket (4).

2. electromagnetic switch according to claim 1, which is characterized in that the dynamic iron core (5) and the moving contact pole socket (4) Between form the first cavity (13), the moving contact pole socket (4) forms the second cavity away from the side of the dynamic iron core (5) (14), the movable contact rod (3) runs through the moving contact pole socket (4) to second cavity from first cavity (13) (14), wherein connection first cavity (13) and second cavity (14) are provided on the wall of the antirust sheath (31) Venthole (311).

3. electromagnetic switch according to claim 2, which is characterized in that the venthole (311) is from the antirust sheath (31) one end end face extends on the end face of the other end, the venthole (311) is circumferentially spaced be provided with it is multiple.

4. electromagnetic switch according to claim 3, which is characterized in that covering is provided with waterproof on the venthole (311) Ventilated membrane (36).

5. electromagnetic switch according to claim 1, which is characterized in that be provided on the inner wall of the antirust sheath (31) convex It rises (312), is arranged fluted (35) on the outer surface of the movable contact rod (3), the protrusion of the antirust sheath (31) (312) it is stuck in the groove (35).

6. according to the electromagnetic switch described in any one of claim 1-5, which is characterized in that the electromagnetic switch further includes phase To the shell (1) fixed static contact (7) and it is arranged in the movable contact rod (3) to pass through the movable contact rod (3) The moving contact (6) that can be contacted with the static contact (7) of movement, separate institute of the static contact (7) in the moving contact (6) State the side of dynamic iron core (5)；

Wherein, be set as under the active force when being touched with static contact (7) can be relative to the movable contact rod for the moving contact (6) (3) it is moved to the direction far from the static contact (7), in being arranged close to the side of the dynamic iron core (5) for the moving contact (6) It is useful for applying first bullet of the elastic force to keep the moving contact (6) to contact with the static contact (7) to the moving contact (6) Spring (8).

7. electromagnetic switch according to claim 6, which is characterized in that be provided with the first flange on the movable contact rod (3) (32) and the second flange (33) what, the moving contact (6) and first spring (8) were sleeved on the movable contact rod (3) is located at institute It states on the part between the first flange (32) and second flange (33)；

Wherein, relatively described second flange (33) of first flange (32) is closer to the dynamic iron core (5), the antirust sheath (31) positioned at the movable contact rod (3) from the part that first flange (32) extends towards the dynamic iron core (5).

8. electromagnetic switch according to claim 7, which is characterized in that the antirust sheath (31) and first flange (32) gap is provided between.

9. according to the electromagnetic switch described in any one of claim 1-5, which is characterized in that the dynamic iron core (5) and described Movable contact rod (3) split settings, the electromagnetic switch further include so that the (the first back-moving spring that the movable contact rod (3) resets (9) and second back-moving spring (10) that the dynamic iron core (5) is resetted；

Alternatively, the dynamic iron core (5) is fixedly connected with the movable contact rod (3), the electromagnetic switch includes for so that described The resetting spring that dynamic iron core (5) and the movable contact rod (3) reset together.

10. a kind of starter, which is characterized in that the starter is provided with according to described in any one of claim 1-9 Electromagnetic switch.