CN100404849C - Over speed protector for automobile start motor - Google Patents
Over speed protector for automobile start motor Download PDFInfo
- Publication number
- CN100404849C CN100404849C CNB200510061248XA CN200510061248A CN100404849C CN 100404849 C CN100404849 C CN 100404849C CN B200510061248X A CNB200510061248X A CN B200510061248XA CN 200510061248 A CN200510061248 A CN 200510061248A CN 100404849 C CN100404849 C CN 100404849C
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- motor
- spring sheet
- upper contact
- fixed
- electromagnet
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Abstract
The present invention relates to an overspeed protector for an automobile start-up motor, which comprises a wire connection board and a centrifuge, wherein the wire connection board is arranged on an end cover of the start-up motor, and a centrifuge is arranged on a rotating shaft of the start-up motor. The wire connection board comprises a spring sheet, a fixing board, an electromagnet and an armature, wherein one end of the spring sheet is fixed to the fixing board, and the other end is provided with an upper contact. The upper contact leans against an upper contact of a fixing bracket connected with the start-up motor; the fixing bracket is fixed to the fixing board. The upper contact of the fixing bracket and the upper contact of the spring sheet are serially connected with a power source of the motor and a key switch to form a loop; the other end of the spring sheet is fixed to the armature, and the electromagnet is fixed to the opposite fixing board. The electromagnet, the key switch and the power source are connected in serial to form a loop. The present invention has the advantages that the present invention can prevent the start-up motor from damaging for dragging by the motor to prolong the service life of the start-up motor and to reduce economic loss; the present invention also has the advantages of simple structure, low cost and reliable start-up, and is suitable for overspeed protectors of various automobiles.
Description
Technical field
The present invention relates to a kind of motor protector, particularly a kind of automobile start motor over speed protection.
Background technique
Automobile drives motor by starter motor and starts.During car engine, driver's key switch, starter motor is stretched out the gear inosculation on gear shaft and the engine flywheel immediately, and because the rotation of starter motor, drive motor and finish air inlet, compression, burning expansion, the whole process of exhaust, make motor begin proper functioning.During normal condition, the driver should in time loose one's grip key operation, makes it to reset, and promptly cuts off the power supply of starter motor, and motor quits work.But because all factors, can cause key operation not reset,, discover less than motor sometimes and work, take for motor and do not start and do not unclamp key operation as because development in science and technology has lacked for behind the car engine people's sensation; When and for example the diesel-oil vehicle cold day started, the driver was afraid of that falseness starts and stop working, and always thinks to pinch key operation after engine combustion expands more; In addition, automobile one has minor failure, can cause and start not smoothly, and the driver is afraid of that falseness is started and flame-out and pinch key operation more, and key is not resetted.Above-mentioned these factors, starter motor can not in time quit work when causing engine operation, gear on the motor gear axle still can not break away from the gear on the engine flywheel, at this moment not that starter motor drives motor, but motor drives starter motor, the rotating speed of starter motor will be quickly up to ten thousand rev/mins of 1.5-3, and starter motor will burn pine, burn out because of hypervelocity causes bearing, and whole starter motor will soon be damaged.
Summary of the invention
Technical problem to be solved by this invention is to overcome the above-mentioned defective of prior art and a kind of automobile start motor over speed protection is provided, and makes that it is simple in structure, can protect automobile start motor effectively.
The present invention solves the problems of the technologies described above the technological scheme that is adopted:
The automobile start motor over speed protection; comprise wire board and centrifuge; wire board is installed on the end cap of starter motor; centrifuge is installed in the rotating shaft of motor; described wire board comprises spring sheet; fixed plate; electromagnet; armature; spring sheet one end is fixed on the fixed plate; the other end is established upper contact; upper contact leans against on the upper contact of the fixing frame that links to each other with starter motor; fixing frame is fixed on the fixed plate; the upper contact of described fixing frame; between the upper contact of spring sheet with the power supply of motor; the key operation polyphone constitutes a loop; the opposite side of spring sheet is fixed armature also; the fixed electromagnet on the plate that is relatively fixed, described electromagnet; key operation; the power supply series connection constitutes a loop.
The highest position of above-mentioned spring sheet and centrifuge opposing side have wear plate, can prevent the centrifuge spring sheet that weares and teares in the fast rotational process like this.
Above-mentioned automobile start motor over speed protection constitutes two circuit: power supply, key operation, motor are connected with a pair of upper contact and are constituted the starting circuit of starter motor; Power supply, key operation, electromagnet series connection constitute the protective circuit of starter motor.
When above-mentioned automobile start motor over speed protection was installed, the wear plate on the end face of its centrifuge and the wire board spring sheet maintained a certain distance.
When driver's key switch, the starting circuit of starter motor is connected, and motor is started working.When motor to regulation during rotating speed; engine start; centrifuge in the automobile start motor over speed protection is owing to centrifugal action is thrown away; cause the end face of centrifuge to press to wear plate on the wire board spring sheet; force spring sheet to press down; thereby a pair of upper contact that connects motor is disconnected and the power supply of motor is disconnected, and motor this moment proper functioning, so motor and starter motor disengagement.Because key is started working once rotating electromagnet, when spring sheet was pressed down by centrifuge, the armature on the spring sheet was also sucked near electromagnet.This moment, key operation was not as unclamping, connection be electromagnet, spring sheet is held tightly by electromagnet, connects motor starting circuit and can not rebound, the phenomenon of motor drawing motor appears in motor with regard to not rotating.When key operation was loosed one's grip, the protective circuit of starter motor disconnected, and electromagnet quits work; spring sheet resets under the effect of self elastic force, and one group of contact of motor is connected, but key operation disconnects; the starting circuit that is starter motor disconnects, and the motor fail to start returns to former state of rest.
The other end of above-mentioned spring sheet also can have lower contact, on the fixed plate of described spring sheet lower contact opposite position a lower contact is arranged, and the following contact on the lower contact of spring sheet, the fixed plate is connected with electromagnet, key operation, power supply and constituted a loop.Control the protective circuit of motor so jointly with a pair of lower contact and key operation.
Compared with prior art, the invention has the advantages that: after starter motor drives engine start, owing to the starting key fails in time to disconnect when making starter motor continue to link to each other with motor, can in time cut off the power supply of motor, launched machine drags and damages with engine start to prevent starter motor, thereby prolong the working life of starter motor, reduce economic loss.
This automobile start motor protector structure is simple, cost is low, starts reliably, goes in the overspeed protection of various automobiles.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the starting circuit of the starter motor of the embodiment of the invention;
Fig. 3 is the starter motor protective circuit of the embodiment of the invention.
Fig. 4 is the starter motor protective circuit of another embodiment of the present invention.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, the automobile start motor over speed protection comprises centrifuge 1 and wire board 2, and centrifuge 1 is installed in the rotating shaft 3 of starter motor, and wire board 2 is installed on the end cap (not drawing among the figure) of starter motor.
Centrifuge 1 comprises axle sleeve 12, centrifugal film 11, and the wear plate 20 on the lower plane of active cover 12 and the wire board spring sheet 22 has certain distance, and this distance is decided according to the rotating speed of starter motor, the factors such as specification of centrifuge.
Automobile start motor over speed protection starting circuit is seen Fig. 2, and key operation K, the upper contact 26 that is connected spring sheet 22 1 ends are connected with the power supply of motor with the upper contact 25 on the fixing frame 28, constitute a loop.
Automobile start motor overspeed protection circuit is seen Fig. 3, and a line of electromagnet 23 is connected on the lower contact 27 of spring sheet, and another line of electromagnet 23 is connected on the following contact 29 on the fixed plate 21 and with key operation K, power supply and connects, and constitutes a loop.
When connecting key operation K when driver's key, because a pair of upper contact 25,26 normalities of starter motor protector are connection, motor starting circuit is just connected, and starter motor begins to drive motor and works.When starter motor arrives the regulation rotating speed and during ato unit, the centrifugal film 11 of centrifuge 1 is owing to centrifugal action is thrown away, cause active cover 12 end faces of centrifuge 1 to press to wear plate 20 on the spring sheet 22 on the wire board 2, press down spring sheet 22, one upper contact head 26 of spring sheet 22 and upper contact head 25 on the fixing frame are disconnected and the power supply of starter motor M is disconnected, starter motor M quits work and breaks away from motor.Motor is proper functioning, so the power supply of motor disconnects the proper functioning that can not influence motor.And this moment; because spring sheet 22 is depressed by centrifuge 1; following contact 27 on the spring sheet is connected with the lower contact 29 on the fixed plate; electromagnet 23 is just connected and is started working; the armature 24 of riveting on spring sheet 22 sucked and prevent that spring sheet 22 bounce-backs from going back, thereby disconnect the starting circuit of starter motor reliably and connect the protective circuit of starter motor and prevent the motor hypervelocity.
At this moment, do not unclamp and key operation K does not disconnect as key, connection be the starting circuit protective circuit.Because of spring sheet 22 is held tightly, it can not be rebounded connect one group of upper contact head of starter motor starting circuit, motor just can not rotate, and can not occur the phenomenon of motor drawing motor again.Unclamp as key and disconnect key operation; the starter motor protective circuit disconnects; electromagnet 23 quits work; spring sheet 22 resets under the elastic force effect; the upper contact 26 of one end leans against on the upper contact 25 on the fixing frame, returns to previous condition, but this moment, key operation K disconnected; start loop disconnects, and promptly returns to pre-start state.
Be simplified structure, the lower contact 27 of 22 1 ends of the spring sheet in the foregoing description and the lower contact 29 on the fixed plate can be saved that its circuit diagram is seen Fig. 4, so only control the protective circuit of starter motor with key operation K.Its working principle is similar to the aforementioned embodiment, and just solenoid circuit is just connected when key is pinned, and electromagnet just produces electromagnetic force, to spring sheet 22 near the time just can hold spring sheet 22; And key when unclamping solenoid circuit just disconnect and make electromagnet lose electromagnetic force, spring sheet 22 just resets under its elastic force effect, returns to pre-start state.
Claims (3)
1. automobile start motor over speed protection; it is characterized in that: comprise wire board and centrifuge; wire board is installed on the end cap of starter motor; centrifuge is installed in the rotating shaft of motor; described wire board comprises spring sheet; fixed plate; electromagnet; armature; spring sheet one end is fixed on the fixed plate; the other end is established upper contact; upper contact leans against on the upper contact of the fixing frame that links to each other with starter motor; fixing frame is fixed on the fixed plate; the upper contact of described fixing frame; between the upper contact of spring sheet with the power supply of motor; the key operation polyphone constitutes a loop; the opposite side of spring sheet is fixed armature also; the fixed electromagnet on the plate that is relatively fixed, described electromagnet; key operation; the power supply series connection constitutes a loop.
2. automobile start motor over speed protection as claimed in claim 1 is characterized in that: described spring sheet highest position and centrifuge opposing side have wear plate.
3. automobile start motor over speed protection as claimed in claim 1 or 2; it is characterized in that: the other end of described spring sheet has lower contact; on the fixed plate of spring sheet lower contact opposite position a lower contact is arranged, the following contact on the lower contact of spring sheet, the fixed plate is connected with electromagnet, key operation, power supply and is constituted a loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510061248XA CN100404849C (en) | 2005-10-25 | 2005-10-25 | Over speed protector for automobile start motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510061248XA CN100404849C (en) | 2005-10-25 | 2005-10-25 | Over speed protector for automobile start motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1749556A CN1749556A (en) | 2006-03-22 |
| CN100404849C true CN100404849C (en) | 2008-07-23 |
Family
ID=36605173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510061248XA Expired - Fee Related CN100404849C (en) | 2005-10-25 | 2005-10-25 | Over speed protector for automobile start motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100404849C (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87214999U (en) * | 1987-10-29 | 1988-08-03 | 迟小忠 | Automactic controlling over-loading device of motor |
| CN2050088U (en) * | 1989-03-18 | 1989-12-27 | 陈长实 | Vehicle start protecting system |
| CN2296086Y (en) * | 1997-04-07 | 1998-10-28 | 章征凯 | Electric motor protector |
| CN1086774C (en) * | 1996-11-19 | 2002-06-26 | 本田技研工业株式会社 | Vehicle starting controller |
| CN2622416Y (en) * | 2003-05-12 | 2004-06-30 | 中国重型汽车集团有限公司 | Auxiliary starter for car engine |
| US6758293B2 (en) * | 2001-06-06 | 2004-07-06 | Aisin Aw Co., Ltd. | Control system and method for starting an ice in a hybrid vehicle |
| CN2687367Y (en) * | 2004-04-02 | 2005-03-23 | 梅一峰 | Diesel engine start control following device |
| CN2842698Y (en) * | 2005-10-25 | 2006-11-29 | 鲁文龙 | Over-speed protector of automobile starting motor |
-
2005
- 2005-10-25 CN CNB200510061248XA patent/CN100404849C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87214999U (en) * | 1987-10-29 | 1988-08-03 | 迟小忠 | Automactic controlling over-loading device of motor |
| CN2050088U (en) * | 1989-03-18 | 1989-12-27 | 陈长实 | Vehicle start protecting system |
| CN1086774C (en) * | 1996-11-19 | 2002-06-26 | 本田技研工业株式会社 | Vehicle starting controller |
| CN2296086Y (en) * | 1997-04-07 | 1998-10-28 | 章征凯 | Electric motor protector |
| US6758293B2 (en) * | 2001-06-06 | 2004-07-06 | Aisin Aw Co., Ltd. | Control system and method for starting an ice in a hybrid vehicle |
| CN2622416Y (en) * | 2003-05-12 | 2004-06-30 | 中国重型汽车集团有限公司 | Auxiliary starter for car engine |
| CN2687367Y (en) * | 2004-04-02 | 2005-03-23 | 梅一峰 | Diesel engine start control following device |
| CN2842698Y (en) * | 2005-10-25 | 2006-11-29 | 鲁文龙 | Over-speed protector of automobile starting motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1749556A (en) | 2006-03-22 |
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Granted publication date: 20080723 Termination date: 20151025 |
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