CN201018392Y - Permanent-magnet stepper motor for automobile instrument - Google Patents
Permanent-magnet stepper motor for automobile instrument Download PDFInfo
- Publication number
- CN201018392Y CN201018392Y CNU2007201079016U CN200720107901U CN201018392Y CN 201018392 Y CN201018392 Y CN 201018392Y CN U2007201079016 U CNU2007201079016 U CN U2007201079016U CN 200720107901 U CN200720107901 U CN 200720107901U CN 201018392 Y CN201018392 Y CN 201018392Y
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- China
- Prior art keywords
- gear
- base
- output shaft
- rotor
- loam cake
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- 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 - Lifetime
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Abstract
The utility model relates to a permanent magnet stepping motor for an automobile instrument; wherein the outer edge of a stator core is Y-shaped, the inner circle of the stator core is uniformly distributed with eight teeth, the two long teeth are respectively sleeved with a coil, a middle permanent magnet rotor is filled with six or ten magnetic poles, a rotor shaft is tightly fixed with a gear, a middle shaft is tightly fixed with a large gear and a small gear, the large gear of the middle shaft is engaged with the gear of the rotor shaft, the small gear is engaged with the gear tightly fixed on an output shaft, and a gear plane and a base of the output shaft are respectively provided with a positioning convex block and a baffle block which are mutually matched and used to limit the rotation angle; the utility model is characterized in that the base and an upper cover are disk-shaped, a terminal pin of the coil adopts a double star-shaped deformed pin, the end parts exposed on the exterior of the end cover are in parallel relative and distributed in pairs on the circumferential position of the two sides near the center line. The utility model is applied to the general automobile instrument, and has the convenient connection of the terminal pin of the coil.
Description
Technical field
The utility model relates to a kind of motor, especially relates to the automotive meter permanent-magnet stepper motor.
Background technology
Existing automotive meter has the motor windings of two groups of arranged parallel with permanent magnet motor, and the time that passes to is respectively gone up each pulse current that differ from 90 degree electric angles, and its two groups of corresponding leading-out ends also are parallel.Can draw from base, also can draw from loam cake by customer requirements.Since the load request low cruise that this motor drove, and when power supply frequency commonly used, rotor speed is very high, therefore must be equipped with very big (for example 180: the 1) gear pair of speed reducing ratio.Because gear is many, structure is just complicated, is difficult to guarantee concentricity, and difficulty of processing is big.Existing automotive meter often adopts the ferrite plastics to make the entity of magnetic pole and gear with permanent magnet motor, has both required to possess stronger magnetic and its tooth portion has necessary mechanical strength, rigidity, toughness and plasticity, causes to make and produces relatively difficulty.
The patent No. is the Chinese patent " integrated form instrument permanent magnetism micromotor " of ZL200420021550.3, one integrated form instrument permanent magnetism micromotor is disclosed, it comprises casing, stator core and rotor, it is characterized in that casing has base and the loam cake that is interlocked, stator core is installed in casing, the output shaft that p-m rotor and the jack shaft parallel with armature spindle and an end stretch out casing, the outer rim of stator core is " Y " shape, interior circle unshakable in one's determination is evenly equipped with 8 teeth, wherein two are long tooth, all the other are short tooth, the electrical degree of two long teeth in the space is 90 degree, and only on these two long teeth, be with coil respectively, p-m rotor is filled with 6 or 10 magnetic poles, tighten inherent gear at armature spindle, jack shaft tightens intrinsic gear wheel and pinion, the gear wheel of jack shaft and the gears engaged on the armature spindle, pinion and the gears engaged that is fastened on the output shaft, gear plane and base at output shaft are respectively equipped with the locating convex block and the block that are used to limit the anglec of rotation that matches, armature spindle, two ends of jack shaft and output shaft all directly are bearing in the axis hole of base and loam cake, it has simple in structure, need not to join in addition securing member, the concentricity of axle system easily guarantees, be beneficial to and reduce noise, reduce temperature, and can make the instrument integral installation obtain simplifying advantage, but, this motor is because ceiling structure system, can't make disc-shape,, just cause the terminal pin of its coil to be difficult to be welded to connect with circuit board if casing adopts disc-shape, thereby cause it to be difficult in extensive use in some use occasions such as automobile, structurally also require further improvement.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of terminal pin automotive meter permanent-magnet stepper motor easy to connect that is adapted at use, coil on the vehicle universal instrument.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of automotive meter permanent-magnet stepper motor, comprise casing, stator core and rotor, casing is that the base and the loam cake that are interlocked are formed, stator core is installed in casing, the output shaft that p-m rotor and the jack shaft parallel with armature spindle and an end stretch out casing, the outer rim of stator core is " Y " shape, interior circle unshakable in one's determination is evenly equipped with 8 teeth, wherein two are long tooth, all the other are short tooth, the electrical degree of two long teeth in the space is 90 degree, and only on these two long teeth, be with coil respectively, p-m rotor is filled with 6 or 10 magnetic poles, tighten inherent gear at armature spindle, jack shaft tightens intrinsic gear wheel and pinion, the gear wheel of jack shaft and the gears engaged on the armature spindle, pinion and the gears engaged that is fastened on the output shaft, gear plane and base at output shaft are respectively equipped with the locating convex block and the block that are used to limit the anglec of rotation that matches, armature spindle, two ends of jack shaft and output shaft all directly are bearing in the axis hole of base and loam cake, it is characterized in that described base and loam cake are disc, and the terminal pin of coil adopts special-shaped pin, the middle part of terminal pin is curved, two ends extend upward respectively and extend downwards, become link, its end parts parallel that is exposed at the loam cake outside is relative, is distributed in couples near near the peripheral part, the both sides center line.
As improvement, described base and loam cake are formed by the plastics casting, and are provided with the alignment pin that matches, location hole and elasticity buckling piece, and the assembling of being convenient between them connects.
Improve, described p-m rotor is that the annular magnet element is carried out injection moulding as inserts again, and the moulding of working of plastics top has gear and magnet ring is made of one.Containing abundant rare earth material with China like this is magnet ring, produces high-intensity magnetic field, makes and operates steadily, and returns zero reliably, and is the inserts injection made gear with this magnet ring, is convenient to the selection of plastic raw material and Shooting Technique.
Further improve, described locating convex block is to be made of one on the gear bottom surface that is molded directly within on the output shaft, and block is molded directly within and is made of one on the surface in the base, is convenient to make and produces.
Compared with prior art, advantage of the present utility model is: simple in structure, need not to join in addition securing member, and the concentricity of axle system easily guarantees, be beneficial to and reduce noise, reduce temperature, and can make the instrument integral installation obtain simplifying, adopt disc, being fit to instrument general on the automobile uses, and unique coil lead, being connected between the terminal pin of very convenient coil and the circuit board, and can make this Rational structure in the narrow space of disc, realize assembling.
Description of drawings
Fig. 1 automotive meter is with the outline drawing (the symmetric halves branch is analysed and observe) of permanent-magnet stepper motor;
Fig. 2; The automotive meter sectional arrangement drawing of permanent-magnet stepper motor;
Fig. 3 is a base vertical view;
Fig. 4 is the cutaway view of base;
Fig. 5 is the loam cake end view;
Fig. 6 is the loam cake front view;
Fig. 7 a is a special-shaped terminal pin side schematic view wherein;
Fig. 7 b is a special-shaped terminal pin vertical view wherein;
Fig. 8 a is a special-shaped terminal pin side schematic view wherein;
Fig. 8 b is a special-shaped terminal pin vertical view wherein;
Fig. 9 a is a special-shaped terminal pin side schematic view wherein;
Fig. 9 b is a special-shaped terminal pin vertical view wherein;
Figure 10 a is a special-shaped terminal pin side schematic view wherein;
Figure 10 b is a special-shaped terminal pin vertical view wherein.
Embodiment
Implement the utility model is described in further detail below in conjunction with accompanying drawing.
With reference to Fig. 1, this automotive meter has the casing that the base 2 that is interlocked and loam cake 1 constitute with the permanent magnetism micromotor, stator core 3 is installed in casing, the output shaft 4 that p-m rotor 6 and the jack shaft 5 parallel with armature spindle and an end stretch out casing, the outer rim of stator core is that non-circular cardinal principle " Y " shape that is (is seen Fig. 1, shown in 2), can save the space that motor occupies like this, corresponding iron core is provided with the length tooth, on the inner periphery of iron core, be evenly equipped with 8 teeth, wherein two are long tooth 7, all the other are short tooth, the electrical degree of two long teeth 7 in the space is 90 degree, and only on these two long teeth 7, be with concentrating coil 8 respectively, see Fig. 1, it is the left-right symmetric design, p-m rotor is filled with 10 magnetic poles, on armature spindle, be injected with gear 9, jack shaft 5 tightens intrinsic gear wheel 10 and pinion 11, the gear wheel 10 of jack shaft and 9 engagements of the gear on the armature spindle, pinion 11 and gear 12 engagements that are fastened on the output shaft, armature spindle, two ends of jack shaft 5 and output shaft 4 all directly are bearing in the axis hole of base 2 and loam cake 1, here, base 2, gear in loam cake 1 and each rotating shaft all adopts the plastics casting of high strength and good toughness to form, and axle rotation in axis hole has good greasy property.In order to limit the anglec of rotation of the left and right swing of gauge pointer, on the plane of output shaft gear 12, establish two locating convex blocks 13, and the block 14 of keeping out locating convex block 13 is set on base, see Fig. 3.Locating convex block 13 is to be made of one on gear 12 bottom surfaces that are molded directly within on the output shaft, and block 14 is molded directly within the base 2 and is made of one on the surface.
Fig. 7-Figure 10 is the schematic diagram of each special-shaped terminal pin, terminal pin 19 adopts the special-shaped pin that presents " , " shape substantially, the middle part of terminal pin 19 is curved, two ends extend upward respectively and extend downwards, become link, it is relative to make four terminal pins be exposed at the end parts parallel of loam cake 1 outside, is distributed in couples near near the peripheral part, the both sides center line, is convenient to be connected on the circuit board and uses.And, make also can be provided with in the narrow space between discoidal base 2 and the loam cake 1 by this special-shaped terminal pin 19 p-m rotor 6 and stator core 3 are installed.
Claims (4)
1. automotive meter permanent-magnet stepper motor, comprise casing, stator core and rotor, casing is that the base (2) and the loam cake (1) that are interlocked are formed, stator core (3) is installed in casing, the output shaft (4) that p-m rotor (6) and the jack shaft (5) parallel with armature spindle and an end stretch out casing, the outer rim of stator core is " Y " shape, interior circle unshakable in one's determination is evenly equipped with 8 teeth, wherein two are long tooth (7), all the other are short tooth, the electrical degree of two long teeth in the space is 90 degree, and only on these two long teeth, be with coil (8) respectively, p-m rotor is filled with 6 or 10 magnetic poles, tighten inherent gear (9) at armature spindle, jack shaft (5) tightens intrinsic gear wheel (10) and pinion (11), gear (9) engagement on gear wheel of jack shaft (10) and the armature spindle, pinion (11) and gear (12) engagement that is fastened on the output shaft, gear plane and base at output shaft are respectively equipped with locating convex block that is used to limit the anglec of rotation (13) and the block (14) that matches, armature spindle, two ends of jack shaft (5) and output shaft (4) all directly are bearing in the axis hole of base (2) and loam cake (1), it is characterized in that described base (2) and loam cake (1) are disc, and the terminal pin (19) of coil (8) adopts special-shaped pin, the middle part of terminal pin (19) is curved, two ends extend upward respectively and extend downwards, become link, its end parts parallel that is exposed at loam cake (1) outside is relative, is distributed in couples near near the peripheral part, the both sides center line.
2. automotive meter permanent-magnet stepper motor according to claim 1 is characterized in that described base (2) and loam cake (1) are formed by the plastics casting, and is provided with the alignment pin that matches, location hole and elasticity buckling piece.
3. automotive meter permanent-magnet stepper motor according to claim 1 and 2 is characterized in that described p-m rotor (6) is the annular magnet element to be mounted on the working of plastics form, and the moulding of working of plastics top has gear (9) and is made of one.
4. automotive meter permanent-magnet stepper motor according to claim 3, it is characterized in that described locating convex block (13) is to be made of one on gear (12) bottom surface that is molded directly within on the output shaft, and block (14) is molded directly within on base (2) surface, lining and is made of one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201079016U CN201018392Y (en) | 2007-04-06 | 2007-04-06 | Permanent-magnet stepper motor for automobile instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201079016U CN201018392Y (en) | 2007-04-06 | 2007-04-06 | Permanent-magnet stepper motor for automobile instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201018392Y true CN201018392Y (en) | 2008-02-06 |
Family
ID=39058892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201079016U Expired - Lifetime CN201018392Y (en) | 2007-04-06 | 2007-04-06 | Permanent-magnet stepper motor for automobile instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201018392Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101505075B (en) * | 2008-11-18 | 2011-06-15 | 无锡麦克络微电机有限公司 | Vibration preventing automobile instrument motor |
| CN101728926B (en) * | 2008-10-14 | 2011-08-17 | 彭希南 | Micro step motor with double driving shafts |
-
2007
- 2007-04-06 CN CNU2007201079016U patent/CN201018392Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101728926B (en) * | 2008-10-14 | 2011-08-17 | 彭希南 | Micro step motor with double driving shafts |
| CN101505075B (en) * | 2008-11-18 | 2011-06-15 | 无锡麦克络微电机有限公司 | Vibration preventing automobile instrument motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: CO-PATENTEE TO: HU XINFANG ¬ |
|
| CU01 | Correction of utility model patent |
Correction item: Co-patentee Correct: Hu Xinfang Number: 06 Page: The title page Volume: 24 |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Co-patentee Correct: Hu Xinfang Number: 06 Volume: 24 |
|
| ERR | Gazette correction |
Free format text: CORRECT: CO-PATENTEE; FROM: NONE ¬ TO: HU XINFANG ¬ |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080206 |
|
| CX01 | Expiry of patent term |