CN201174652Y - High-bearing permanent magnet type linear stepping motor - Google Patents
High-bearing permanent magnet type linear stepping motor Download PDFInfo
- Publication number
- CN201174652Y CN201174652Y CNU2008200330904U CN200820033090U CN201174652Y CN 201174652 Y CN201174652 Y CN 201174652Y CN U2008200330904 U CNU2008200330904 U CN U2008200330904U CN 200820033090 U CN200820033090 U CN 200820033090U CN 201174652 Y CN201174652 Y CN 201174652Y
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- Prior art keywords
- bearing
- stepping motor
- procapsid
- shell
- back casing
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- Expired - Fee Related
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Abstract
The utility model relates to a high load-bearing permanent-magnetic linear stepping motor, comprising a stator component (3), a rotor component (5), a front shell (2), a back shell (4), a lead screw (1) and a back bearing (6). The stator component (3) is fixed with the front shell (2); the rear part of the rotor component (5) is supported on the back shell (4) by the back bearing (6); and the lead screw (1) is in threaded connection with the rotor component (5). The stepping motor is characterized in that the back shell (4) is formed by steel plates, and the back shell (4) is welded with the back end of the front shell (2). The stepping motor is good in load bearing capability, and can prevent the back shell from falling off. The stepping motor is mainly used for control valves of dual-fuel automobiles (LPG), and can also be used for the idling adjustment of throttle valve bodies.
Description
Technical field
The utility model relates to a kind of p-m step motor of high-mechanic, is mainly used in the control valve of dual-fuel automobile (LPG).
Background technology
Dual-fuel automobile (LPG) has low pollution, low consumption, low noise, characteristics that power performance is good, safe and reliable, and as main automotive fuel, CO2 emissions reduces 25% with natural gas, and the oxynitrides discharge capacity reduces 80%.Dual-fuel automobile LPG control valve is the important control element of LPG double fuel switching valve with linear stepping motor, and LPG double fuel switching valve is to be positioned at the automobile engine part, and its operational environment is very abominable, and temperature requirement is-40 ℃～125 ℃; Vibration is violent, and dust is more.Because this valve body is conversion gasoline and liquefied natural gas, and particularly liquefied natural gas has certain pressure, to the sealing of this valve body, fail safe and reliability are all had higher requirement in addition.
Recognize from the production firm of domestic production LPG dual-fuel automobile, the linear stepping motor of the Siemens Cheng Diou production of their uses at present, what adopt is with plastic injection-moulded shaping (as shown in Figure 3), is fixed on the rear end of the procapsid of motor by pressing, because plastics are different with the thermal coefficient of expansion of metal, cause concentricity bad, and working of plastics is subjected to thermal softening under hot environment, can only be at axially loaded less than 10Kgf, and surpass 10Kgf and cause the working of plastics damage that comes off easily.
Summary of the invention
The purpose of this utility model provides a kind of bearing capacity good, and can avoid the permanent magnet type linear stepping motor of the high-mechanic that back casing comes off.
The technical scheme that realizes above-mentioned purpose is: a kind of permanent magnet type linear stepping motor of high-mechanic, comprise stator module, rotor assembly, procapsid, back casing, screw mandrel and rear bearing, stator module is fixedlyed connected with procapsid, the rear portion of rotor assembly is bearing on the back casing by rear bearing, screw mandrel is threaded with rotor assembly, back casing is made by steel plate, and the welding of the rear end of back casing and procapsid.
After adopting technique scheme, back casing steel plate stretch process, it is welded on the rear end of the procapsid of motor, guarantee the concentricity requirement of welding by high-precision frock, because what adopt is steel plate, the thermal coefficient of expansion unanimity, and bearing capacity improves greatly, can bear 40Kgf thrust fully and not come off, guarantee the reliability of this motor.
Description of drawings
Fig. 1 is first kind of structural representation of the present utility model;
Fig. 2 is second kind of structural representation of the present utility model;
Fig. 3 is the structural representation of prior art neutral line stepping motor.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
Embodiment one
As shown in Figure 1, a kind of permanent magnet type linear stepping motor of high-mechanic, comprise stator module 3, rotor assembly 5, procapsid 2, back casing 4, screw mandrel 1 and rear bearing 6, stator module 3 is fixedlyed connected with procapsid 2, the rear portion of rotor assembly 5 is bearing on the back casing 4 by rear bearing 6, screw mandrel 1 is threaded with rotor assembly 5, and back casing 4 is made by steel plate, and the rear end welding of back casing 4 and procapsid 2.
Embodiment two
As shown in Figure 2, a kind of permanent magnet type linear stepping motor of high-mechanic, comprise stator module 3, rotor assembly 5, procapsid 2, back casing 4, screw mandrel 1 and rear bearing 6, stator module 3 is fixedlyed connected with procapsid 2, and the rear portion of rotor assembly 5 is bearing on the back casing 4 by rear bearing 6, screw mandrel 1 is threaded with rotor assembly 5, back casing 4 is made by steel plate, and the rear end welding of back casing 4 and procapsid 2, and the front portion of rotor assembly 5 is bearing on the procapsid 2 by fore bearing 7.This dual bearing structure makes the rotor assembly 5 on-stream concentricity precisions that guarantee two ends, good stability when rotor is stressed, thereby the useful life of improving motor.
The installation steps of this structure are as follows; fore bearing 7 is pressed in the plastic shaft bearing of procapsid 2; locate with brearing bore; by pressure-riveting process, make plastic shaft bearing and external polar plate connect into procapsid 2, the stator module 3 of packing into; with rotor assembly 5 back casing 4 of packing into; and be locked, procapsid 2, back casing 4 are fixed together the screw mandrel 1 of packing at last by gas shielded arc welding.
The course of work of the present utility model is as follows:
After stator module 3 energising,, produce rotating magnetic field, drive rotor assembly 5 and walk around, thereby screw mandrel 1 is advanced or retreat, reach straight-line purpose with magnetic field at motor internal along with the variation of pulse signal.
The utility model can also be used for the idling adjustment of throttle body.
Claims (2)
1, a kind of permanent magnet type linear stepping motor of high-mechanic, comprise stator module (3), rotor assembly (5), procapsid (2), back casing (4), screw mandrel (1) and rear bearing (6), stator module (3) is fixedlyed connected with procapsid (2), the rear portion of rotor assembly (5) is bearing on the back casing (4) by rear bearing (6), screw mandrel (1) is threaded with rotor assembly (5), it is characterized in that: back casing (4) is made by steel plate, and back casing (4) welds with the rear end of procapsid (2).
2, the permanent magnet type linear stepping motor of high-mechanic according to claim 1 is characterized in that: the front portion of rotor assembly (5) is bearing on the procapsid (2) by fore bearing (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200330904U CN201174652Y (en) | 2008-03-21 | 2008-03-21 | High-bearing permanent magnet type linear stepping motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200330904U CN201174652Y (en) | 2008-03-21 | 2008-03-21 | High-bearing permanent magnet type linear stepping motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201174652Y true CN201174652Y (en) | 2008-12-31 |
Family
ID=40201780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200330904U Expired - Fee Related CN201174652Y (en) | 2008-03-21 | 2008-03-21 | High-bearing permanent magnet type linear stepping motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201174652Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888165A (en) * | 2010-07-05 | 2010-11-17 | 常州市巨力精密电机有限公司 | Linear motor |
| CN103615332A (en) * | 2013-09-18 | 2014-03-05 | 东风南充汽车有限公司 | Gas coach vehicle idling electric control system |
-
2008
- 2008-03-21 CN CNU2008200330904U patent/CN201174652Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888165A (en) * | 2010-07-05 | 2010-11-17 | 常州市巨力精密电机有限公司 | Linear motor |
| CN103615332A (en) * | 2013-09-18 | 2014-03-05 | 东风南充汽车有限公司 | Gas coach vehicle idling electric control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081231 Termination date: 20120321 |