CN2529049Y - Electromagnetic valve coil protector - Google Patents
Electromagnetic valve coil protector Download PDFInfo
- Publication number
- CN2529049Y CN2529049Y CN 02215593 CN02215593U CN2529049Y CN 2529049 Y CN2529049 Y CN 2529049Y CN 02215593 CN02215593 CN 02215593 CN 02215593 U CN02215593 U CN 02215593U CN 2529049 Y CN2529049 Y CN 2529049Y
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- CN
- China
- Prior art keywords
- electromagnetic valve
- coil
- iron core
- winding
- pull
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides an electromagnetic valve coil protector and pertains to the technical field of electronics, which solves the phenomenon of often occurrence of burn out of the prior electromagnetic valve in the process of the actual using. The electromagnetic valve coil protector is arranged on the electromagnetic valve. The electromagnetic valve comprises an iron core, a suction drawing coil and a maintaining coil. The protector comprises a travel switch. The travel switch is paralleled connected with the maintaining coil after series connected with the suction drawing coil. A controlled pushing rod of the travel switch is positioned within a mobile range of a movable iron core. The utility model ensures shorter induction time of the suction drawing coil of the electromagnetic valve by the travel switch and avoids the burn out of the coil of the electromagnetic valve, thereby prolonging the service life of the electromagnetic valve and having higher practical value.
Description
Technical field
The utility model belongs to electronic technology field, particularly the coil protector of solenoid valve.
Background technique
Solenoid valve is a kind of electronic device commonly used, can be widely used in fields such as automobile, oil, metallurgy.Iron core, static iron core, pull in winding are arranged in the solenoid valve and keep coil.When solenoid valve started, electric current was by the electromagnetic force that pull in winding produced, and the moving iron core of control moves to desired position; The electric current of pull in winding disconnects then, and dependence will be moved iron core by the electromagnetic force that electric current produced of keeping coil and maintain residing position.Generally speaking, very big by the electric current of pull in winding, and less by the electric current of keeping coil.This just requires current"on"time should be short as far as possible by the electric current of pull in winding, otherwise be easy to burn coil.
But, in the actual using process of solenoid valve, need continuous several times to repeat opens solenoid valve sometimes.When being applied to the motor place of automobile as solenoid valve, the starter motor of solenoid valve and motor connects together.Because motor is repeatedly repetition of starting difficulty because of various reasons often, solenoid valve also and then repeats to open.Therefore, in actual use, solenoid valve often taking place burnt phenomenon, has directly influenced the working life of solenoid valve.
Summary of the invention
The purpose of this utility model is in order to overcome the problems referred to above, a kind of electromagnetic valve coil protector to be provided, and it can prevent that the coil of solenoid valve from being burnt, and prolongs the working life of solenoid valve.
The purpose of this utility model realizes by following technical proposal: this electromagnetic valve coil protector is arranged on the solenoid valve, and solenoid valve comprises moving iron core, pull in winding and keeps coil.This protector comprises a position limit switch, and position limit switch is with after pull in winding is connected, again with keep coils from parallel connection of coils, the control push rod of position limit switch is positioned at the moving range of moving iron core.
Generally, when solenoid valve was not switched on, the control push rod of position limit switch separated with moving iron core, the junction closure of position limit switch.
In the utility model, after the solenoid valve energising, electric current is at first by pull in winding, and pull in winding produces electromagnetic force, and iron core is moved.After moving iron core moved to desired position, moving iron core roof pressure simultaneously made the position limit switch contact separately on the control push rod of position limit switch, becomes turnoff state by original on state.Like this, pull in winding is outage just, so the current"on"time of pull in winding is very short.But owing to keep coil and also be in "on" position, moving iron core holding position under the effect of keeping the electromagnetic force that coil produces is constant.Be that the residing state of solenoid valve remains unchanged.
Advantage of the present utility model is to have guaranteed that by position limit switch the pull in winding of solenoid valve is very short current"on"time, avoids the coil of solenoid valve to be burnt, thereby prolonged the working life of solenoid valve; Simultaneously, this protector is owing to only having set up a position limit switch, and is simple in structure, has higher utility.
Description of drawings
Fig. 1 is the electrical schematic diagram of the electromagnetic valve coil protector that provides of the utility model.
Fig. 2 is the structural representation of position limit switch and solenoid valve in the electromagnetic valve coil protector that provides of the utility model.
Embodiment
As shown in Figure 1, present embodiment is the situation of solenoid valve when being applied to motor car engine.At this moment, the switch starter K of engine cranking motor D and the switch of solenoid valve are connected together.Pull in winding C1 is with in parallel with engine cranking motor D again after position limit switch T connects, switch starter K then with after said elements is connected again with keep coil C2 parallel connection.
In the present embodiment, the used power supply of engine cranking motor D and solenoid valve is a direct current.
As shown in Figure 2, position limit switch T is made up of the moving contact 5 of the control push rod 3 of insulation crust 1, insulation, control push rod 3 the inners, the fixed contact 4 that is arranged at the holddown spring 6 between moving contact 5 and the shell 1 and is fixed in shell 1 inboard.Housing 1 is stretched out in the outer end of control push rod 3, and is in the moving range of electromagnetism valve actuation iron core 2.Stationary contact 4 has two, mutually insulated between these two fixed contacts 4, and link to each other with pull in winding C1 with switch starter K by lead respectively.
As shown in Figure 1, when switch starter K off state, the control push rod 3 of position limit switch T separates with the moving iron core 2 of solenoid valve, and the moving contact 5 of position limit switch T contacts with two fixed contacts 4 under the effect of holddown spring 6, make this two fixed contact 4 conductings, also just make position limit switch T be on state.At this moment, when starter motor D is piloted engine in switch starter K conducting, electric current will move iron core 2 by pull in winding C1.When moving iron core 2 moved to desired position, the control push rod 3 that moving iron core 2 can roof pressure position limit switch T made that moving contact 5 separates with fixed contact 4 among the position limit switch T, and position limit switch T is in off state like this, does not also just have electric current to pass through among the pull in winding C1.But, keep coil C2 and still continue energising, make the invariant position of iron core 2.
Under this state, after motor was finished the starting proper functioning, switch starter K disconnected, and also will continue the invariant position that moving iron core 2 is kept in energising but keep coil C2.
As shown in Figure 2, Returnning spring 7 of socket in the moving iron core 2.In case disconnect by the circuit loop of keeping coil C2, promptly keeping coil C2 does not have electric current to pass through, then moving iron core 2 can be returned to original position under the effect of Returnning spring 7, and moving iron core 2 also just separates with the control push rod 3 of position limit switch T.Simultaneously, the moving contact 5 among the position limit switch T also under the effect of holddown spring 6 with two fixed contact 4 closures, make position limit switch T conducting, be prime next time.
In order to suppress the high voltage that pull in winding C1 produces when cutting off the power supply, can also be at the two ends of pull in winding C1 diode in parallel.
Claims (5)
1, a kind of electromagnetic valve coil protector; be arranged on the solenoid valve; solenoid valve comprises moving iron core (2), pull in winding C1 and keeps coil C2; it is characterized in that this protector comprises a position limit switch T; position limit switch T is with after pull in winding C1 connects; with to keep coil C2 in parallel, the control push rod (3) of position limit switch T is positioned at the moving range of moving iron core (2) again.
2, electromagnetic valve coil protector according to claim 1, its feature is made up of the inner moving contact (5) of control push rod (3), the control push rod (3) of insulation crust (1), insulation, the fixed contact (4) that is arranged at the holddown spring (6) between moving contact (5) and the shell (1) and is fixed in shell (1) inboard in described position limit switch T.
3, electromagnetic valve coil protector according to claim 2, its feature has two in described stationary contact (4), mutually insulated between these two fixed contacts (4), and link to each other with pull in winding C1 with switch starter K by lead respectively.
4, according to claim 2 or 3 described electromagnetic valve coil protectors, its feature is a Returnning spring of socket (7) in described moving iron core (2).
5, electromagnetic valve coil protector according to claim 1, its feature is in the two ends of described pull in winding C1 diode in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02215593 CN2529049Y (en) | 2002-01-29 | 2002-01-29 | Electromagnetic valve coil protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02215593 CN2529049Y (en) | 2002-01-29 | 2002-01-29 | Electromagnetic valve coil protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2529049Y true CN2529049Y (en) | 2003-01-01 |
Family
ID=33694701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02215593 Expired - Fee Related CN2529049Y (en) | 2002-01-29 | 2002-01-29 | Electromagnetic valve coil protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2529049Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080737A (en) * | 2011-02-25 | 2011-06-01 | 上海齐耀动力技术有限公司 | Pilot-operated electromagnetic valve with valve position feedback signal |
| CN109686531A (en) * | 2018-12-09 | 2019-04-26 | 西安航天精密机电研究所 | Unlock keeps the energization of double-coil electromagnet and double-coil electromagnet to unlock keeping method |
-
2002
- 2002-01-29 CN CN 02215593 patent/CN2529049Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080737A (en) * | 2011-02-25 | 2011-06-01 | 上海齐耀动力技术有限公司 | Pilot-operated electromagnetic valve with valve position feedback signal |
| CN109686531A (en) * | 2018-12-09 | 2019-04-26 | 西安航天精密机电研究所 | Unlock keeps the energization of double-coil electromagnet and double-coil electromagnet to unlock keeping method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |