CN103929039A - Pointer driving device - Google Patents
Pointer driving device Download PDFInfo
- Publication number
- CN103929039A CN103929039A CN201410181763.0A CN201410181763A CN103929039A CN 103929039 A CN103929039 A CN 103929039A CN 201410181763 A CN201410181763 A CN 201410181763A CN 103929039 A CN103929039 A CN 103929039A
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- China
- Prior art keywords
- coil
- cover plate
- box body
- pointer
- drive unit
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a pointer driving device and relates to the field of instrument devices. The pointer driving device solves the technical problems that according to an instrument pointer drive in the prior art, a stepping motor and a reduction ratio gear train are adopted, noise and friction are prone to generating, precision is poor and service life is short. The pointer driving device comprises a stator and a rotor, the stator comprises a box body, a pin connected to the box body and a coil arranged in the box body. A wire head of the coil is connected with the pin, the rotor is correspondingly arranged in the coil, and the coil comprises a coil framework. The outer circumferential face of the coil framework is circumferentially provided with winding grooves used for winding at intervals, the box body comprises an upper cover plate, a lower cover plate and an outer covering jaw ring which is connected between the upper cover plate and the lower cover plate, and the outer covering jaw ring wraps a wire of the coil by corresponding to the winding groove. The pointer device is applied to the instrument devices, particularly driving devices driving pointers to rotate.
Description
[technical field]
The present invention relates to a kind of metering device, especially a kind of drive unit of pointer meters.
[background technology]
Automobile gauge pointer drives and conventionally adopts micro-step motor, and built-in speed reducing ratio gear train, easily produces noise and friction; In application process, because of dentition inertia and pointer load inertia, motor may be lost step when acceleration and deceleration; Gear clearance can make pointer produce obviously to shake or depart from zero-bit; The accuracy of gear requires high, and pointer is pressed into or extracts damage gear, easily causes micro-step motor to drive pointer clamping stagnation, and severe one has caused scraps.
[summary of the invention]
The invention provides a kind of pointer drive unit, without reducing gear train, noise is little, high accuracy.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of pointer drive unit, comprise stator and rotor, described stator comprises box body, is connected to the pin on box body and is arranged on the coil in box body, the end of a thread of coil connects described pin, described rotor correspondence in coil, described coil comprises coil rack, the periphery of described coil rack is along being circumferentially interval with the winding slot for winding the line, described box body comprise upper cover plate, lower cover and be connected to upper cover plate and lower cover between outsourcing dog collar, the corresponding winding slot of outsourcing dog collar is by the conducting wire cladding of coil.
Further, described coil comprises coil and lower coil, described upper coil comprises coil rack, described lower coil comprises lower coil skeleton, described outsourcing dog collar comprises connecting plate between upper coil and lower coil, be arranged on the upper sharp pawl of connecting plate upper surface and be arranged on the lower sharp pawl of connecting plate lower surface, coil rack in upper sharp pawl correspondence, the corresponding lower coil skeleton of lower sharp pawl.
Further, the upper end of described sharp pawl is provided with buckle, and described upper cover plate is provided with the upper draw-in groove that connects described upper buckle, and the lower end of described lower sharp pawl is provided with lower buckle, and described lower cover is provided with the lower bayonet slot that connects described lower buckle.
Further, on described upper cover plate, towards radially extending installation portion, connect described pin on described installation portion, the corresponding installation portion of described lower cover is provided with shade, and described shade hides pin through the part of installation portion.
Further, described rotor comprises rotating shaft, and in described rotating shaft, along being circumferentially extended with boss, described boss is socketed with magnet ring outward.
Further, described magnet ring comprises outer shroud and the brace rod that is arranged on outer shroud inwall, and described brace rod is adjacent to the periphery of boss.
Further, described upper cover plate is provided with projection, and projection is provided with connecting hole, connecting hole described in described rotating shaft cross-under.
Beneficial effect of the present invention:
Pointer drive unit of the present invention, after stator energising, producing magnetic torque drives rotor to turn an angle, rotor drives pointer to indicate on dial, by this type of drive replacement stepping motor and gear train, drive, overcome noise, rub, lose step, the deficiency such as pointer is obviously shaken, clamping stagnation, reach little, the high-precision requirement of noise; And by outsourcing dog collar protection coil, simple in structure, reliable, superior performance.
These features of the present invention and advantage will be below embodiment, accompanying drawing in detailed exposure.
[accompanying drawing explanation]
Below in conjunction with accompanying drawing, the present invention is described further:
Fig. 1 is structural representation of the present invention;
Fig. 2 is cutaway view of the present invention;
Fig. 3 is the structural representation of rotor;
Fig. 4 is the vertical view of rotor.
[embodiment]
The invention provides a kind of pointer drive unit, comprise stator and rotor, stator comprises box body, is connected to the pin on box body and is arranged on the coil in box body, the end of a thread of coil connects pin, in coil, coil comprises coil rack to rotor correspondence, and the periphery of coil rack is along being circumferentially interval with the winding slot for winding the line, box body comprise upper cover plate, lower cover and be connected to upper cover plate and lower cover between outsourcing dog collar, the corresponding winding slot of outsourcing dog collar is by the conducting wire cladding of coil.Coil adopts outsourcing dog collar coated outward, reliable in structure, and superior performance, increases the service life.
Accompanying drawing below in conjunction with the embodiment of the present invention is explained and illustrated the technical scheme of the embodiment of the present invention, but following embodiment is only the preferred embodiments of the present invention, not all.Embodiment based in execution mode, those skilled in the art are other embodiment that obtains under the prerequisite of not making creative work, all belongs to protection scope of the present invention.
With reference to figure 1 and Fig. 2, shown in a kind of pointer drive unit, comprise stator and rotor 1, stator comprises box body, is connected to the pin 4 on box body and is arranged on the coil in box body, the end of a thread of coil connects pin 4, and pin 4 is connected with power supply, and rotor correspondence in coil, after coil electricity, produce rotating magnetic field, inhale and repel each other mutually with rotor magnetic pole is regular, thereby drive rotating shaft to do expection, rotatablely move, concatenation pointer on rotor, rotor turns an angle, and pointer is accurately indication on dial.Coil comprises coil rack; the periphery of coil rack is along being circumferentially interval with the winding slot for winding the line; box body comprise upper cover plate 2, lower cover 3 and be connected to upper cover plate and lower cover between outsourcing dog collar 5; the corresponding winding slot of outsourcing dog collar 5 is by the conducting wire cladding of coil; in the corresponding winding slot of outsourcing dog collar 5 is coated on coil; relatively by outer cover, hide whole coil; the present invention is by the outsourcing dog collar winding wire on corresponding coil rack only; when playing good protective effect, saved material.
Its coil comprises coil 61 and lower coil 62, upper coil 61 comprises coil rack 611, lower coil 62 comprises lower coil skeleton 621, and outsourcing dog collar 5 comprises connecting plate 51 between upper coil 61 and lower coil 62, be arranged on the upper sharp pawl 52 of connecting plate 51 upper surfaces and be arranged on the lower sharp pawl 54 of connecting plate 51 lower surfaces.Corresponding upper coil rack 611, the corresponding lower coil skeleton 621 that connects of lower sharp pawl 54 of connecting of upper sharp pawl 52.By same outsourcing dog collar, protect the wire in upper coil and lower coil simultaneously; Alternating drive signal is provided to upper coil and lower coil, the simplest method is to use bridge circuit, and electric current is changed by transistor break-make, comes the positive and negative of control signal and break-make situation, thereby produces orderly alternating drive signal.
In the upper end of upper sharp pawl 52, be provided with buckle 53, upper cover plate 2 is provided with the upper draw-in groove 24 that connects upper buckle 53, and the lower end of lower sharp pawl 54 is provided with lower buckle 55, and lower cover 3 is provided with the lower bayonet slot 32 that connects lower buckle 55.By which, realize the assembling of outsourcing dog collar, upper cover plate and lower cover, easy accessibility, can stablize clamping in box body by upper coil and lower coil, guarantees that rotor rotates accurate and steady.
And towards radially extending installation portion 23, connect pin 4 on installation portion 23 on upper cover plate 2, it is corresponding with installation portion 23 that lower cover 3 is provided with shade 31, shade 31 hides and stretches into the pin in box body.The end of a thread that coil is connected with pin is more fragile, adopts shade to embrace, and effectively protects coil.
With reference to figure 3 and Fig. 4, rotor 1 comprises rotating shaft 11, and rotating shaft 11 upper ends pass upper cover plate 2, is arranged in the rotating shaft 11 of coil along being circumferentially extended with boss 12, the outer magnet ring 13 that is socketed with of boss 12.Traditional rotating shaft presses and is connected with magnet steel, and pointer is extracted and can be caused rotating shaft and magnet steel dislocation, when serious, may with rotating shaft, extract together by pointer.The boss that arranges in rotating shaft of the present invention, center of gravity is more stable, pointer withdrawal process, the bottom surface of boss and upper cover plate offsets, and prevents that rotating shaft is pulled out.
Middle magnetic ring 13 of the present invention comprises outer shroud 131 and the brace rod 132 that is arranged on outer shroud inwall, and brace rod 132 is adjacent to the periphery of boss 12; Rotating shaft and magnet ring are more easily installed one.
With reference to figure 2, on upper cover plate 1, be provided with projection 21, projection 21 is provided with connecting hole 22, rotating shaft 11 cross-under connecting holes.Boss can prevent that rotating shaft from producing deflection, strengthens stability and accuracy.
By above-described embodiment, object of the present invention is by fully effective having reached.The personage who is familiar with this technology should be understood that the content that the present invention includes but be not limited to accompanying drawing and describe in embodiment above.Any modification that does not depart from function and structure principle of the present invention all will be included in the scope of claims.
Claims (7)
1. a pointer drive unit, it is characterized in that: comprise stator and rotor, described stator comprises box body, is connected to the pin on box body and is arranged on the coil in box body, the end of a thread of coil connects described pin, described rotor correspondence in coil, described coil comprises coil rack, the periphery of described coil rack is along being circumferentially interval with the winding slot for winding the line, described box body comprise upper cover plate, lower cover and be connected to upper cover plate and lower cover between outsourcing dog collar, the corresponding winding slot of outsourcing dog collar is by the conducting wire cladding of coil.
2. a kind of pointer drive unit according to claim 1, it is characterized in that: described coil comprises coil and lower coil, described upper coil comprises coil rack, described lower coil comprises lower coil skeleton, described outsourcing dog collar comprises connecting plate between upper coil and lower coil, be arranged on the upper sharp pawl of connecting plate upper surface and be arranged on the lower sharp pawl of connecting plate lower surface, coil rack in upper sharp pawl correspondence, the corresponding lower coil skeleton of lower sharp pawl.
3. a kind of pointer drive unit according to claim 2, it is characterized in that: the upper end of described sharp pawl is provided with buckle, described upper cover plate is provided with the upper draw-in groove that connects described upper buckle, the lower end of described lower sharp pawl is provided with lower buckle, and described lower cover is provided with the lower bayonet slot that connects described lower buckle.
4. according to a kind of pointer drive unit described in claim 1 or 2 or 3, it is characterized in that: on described upper cover plate, installation portion radially extends in court, on described installation portion, connect described pin, the corresponding installation portion of described lower cover is provided with shade, and described shade hides pin through the part of installation portion.
5. according to a kind of pointer drive unit described in claim 1 or 2 or 3, it is characterized in that: described rotor comprises rotating shaft, in described rotating shaft, along being circumferentially extended with boss, described boss is socketed with magnet ring outward.
6. a kind of pointer drive unit according to claim 5, is characterized in that: described magnet ring comprises outer shroud and the brace rod that is arranged on outer shroud inwall, and described brace rod is adjacent to the periphery of boss.
7. a kind of pointer drive unit according to claim 5, is characterized in that: described upper cover plate is provided with projection, and projection is provided with connecting hole, connecting hole described in described rotating shaft cross-under.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410181763.0A CN103929039A (en) | 2014-04-25 | 2014-04-25 | Pointer driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410181763.0A CN103929039A (en) | 2014-04-25 | 2014-04-25 | Pointer driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103929039A true CN103929039A (en) | 2014-07-16 |
Family
ID=51147150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410181763.0A Pending CN103929039A (en) | 2014-04-25 | 2014-04-25 | Pointer driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103929039A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2720702Y (en) * | 2004-07-28 | 2005-08-24 | 成都银河磁体股份有限公司 | Permanent-magnet motor rotor adapting composite structure |
| CN2805204Y (en) * | 2005-05-26 | 2006-08-09 | 江长坚 | Stepping Motor for driving pointer type meter |
| CN2888412Y (en) * | 2006-02-10 | 2007-04-11 | 马志达科技股份有限公司 | Drive unit of pointer type instrument |
| US20120161552A1 (en) * | 2010-12-24 | 2012-06-28 | Minebea Motor Manufacturing Corporation | Stepping motor for meter |
| CN202652035U (en) * | 2011-06-29 | 2013-01-02 | 美蓓亚马达株式会社 | Stepping motor |
| CN202759364U (en) * | 2012-07-31 | 2013-02-27 | 深圳斯玛尔特微电机有限公司 | Claw-pole type stepping motor |
| CN203788119U (en) * | 2014-04-25 | 2014-08-20 | 黄山金马股份有限公司 | Pointer driving device |
-
2014
- 2014-04-25 CN CN201410181763.0A patent/CN103929039A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2720702Y (en) * | 2004-07-28 | 2005-08-24 | 成都银河磁体股份有限公司 | Permanent-magnet motor rotor adapting composite structure |
| CN2805204Y (en) * | 2005-05-26 | 2006-08-09 | 江长坚 | Stepping Motor for driving pointer type meter |
| CN2888412Y (en) * | 2006-02-10 | 2007-04-11 | 马志达科技股份有限公司 | Drive unit of pointer type instrument |
| US20120161552A1 (en) * | 2010-12-24 | 2012-06-28 | Minebea Motor Manufacturing Corporation | Stepping motor for meter |
| CN202652035U (en) * | 2011-06-29 | 2013-01-02 | 美蓓亚马达株式会社 | Stepping motor |
| CN202759364U (en) * | 2012-07-31 | 2013-02-27 | 深圳斯玛尔特微电机有限公司 | Claw-pole type stepping motor |
| CN203788119U (en) * | 2014-04-25 | 2014-08-20 | 黄山金马股份有限公司 | Pointer driving device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140716 |