CN102035349B - Thermal printer using same - Google Patents
Thermal printer using same Download PDFInfo
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- CN102035349B CN102035349B CN 201010588016 CN201010588016A CN102035349B CN 102035349 B CN102035349 B CN 102035349B CN 201010588016 CN201010588016 CN 201010588016 CN 201010588016 A CN201010588016 A CN 201010588016A CN 102035349 B CN102035349 B CN 102035349B
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- magnet ring
- stator
- rotor
- rotor core
- stepping motor
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- Control Of Stepping Motors (AREA)
Abstract
The invention relates to a stepping motor, which comprises a shell, a rotor, a stator and an end cover. The stator is arranged in the shell. The rotor comprises a core shaft, a rotor core sleeve arranged on the core shaft and magnetic rings arranged on the outer wall of the rotor core sleeve. The magnetic rings are positioned in the stator and gaps are reserved between the magnetic rings and the stator. The core shaft runs through the shell and can be rotationally arranged. The stepping motor is characterized in that: at least two magnetic rings are arranged on the outer wall of the rotor core sleeve along the length direction of the core shaft; and a ring-shaped groove is formed between adjacent magnetic rings. The invention also discloses a thermal printer using the stepping motor. Compared with the prior art, the stepping motor has the advantages that: a ring-shaped space (namely the ring-shaped groove) without a magnetic body is formed at the middle position of the rotor (namely between the two adjacent magnetic rings) so as to avoid interference of an ineffective magnetic field and reduce the offset action of a useless parasitic magnetic field; moreover, the weight of the rotor in the improved scheme is reduced, so the inertia is low and the characteristic of high response speed is achieved.
Description
Technical field
The present invention relates to a kind of stepping motor, the present invention goes back the thermal printer that design and installation has this stepping motor.
Background technology
The driver element of the existing POS of being applied to thermal printer cassette all is to adopt the pulsed drive stepping motor usually, the stepping motor of this class comprises housing, rotor, stator, front and back bearings and end cap, stator comprises again skeleton and coil, as shown in Figure 1, rotor 2a comprises mandrel 23a, be located at the rotor core retainer plate 21a on the mandrel 23a and be positioned at the magnet ring 22a of rotor core retainer plate 21a outer wall, mandrel 23a runs through and passes through housing, rotor core retainer plate 21a is generally cylinder, it is cylindric that magnet ring 22a is one, there is the low and large shortcoming of axial endplay vibrating noise of response speed in the stepping motor of this rotor single-unit formula structure, uses in the printer of very difficult to meet the need high-speed starting.
Summary of the invention
Technical problem to be solved by this invention is the stepping motor that a kind of fast response time is provided for the above-mentioned state of the art.
Another technical problem to be solved by this invention provides the little stepping motor of a kind of noise.
Technical problem to be solved by this invention is the thermal printer that a kind of stepping motor fast response time is provided for the above-mentioned state of the art.
Another technical problem to be solved by this invention provides the little thermal printer of a kind of stepping motor noise.
The present invention solves the problems of the technologies described above the technical scheme that adopts: a kind of stepping motor, comprise housing, rotor, stator and end cap, stator is located in the housing, rotor comprises mandrel, be located at the rotor core retainer plate on the mandrel and be located at the magnet ring of rotor core retainer plate outer wall, magnet ring also and between the stator has the gap in stator, mandrel runs through housing and can rotate setting, end cap is located at the housing port, it is characterized in that described magnet ring is at least two, and be arranged between rotor core retainer plate outer wall and the adjacent magnet ring along the length direction of mandrel and have annular groove.
Annular groove can have following dual mode to form:
The first, described annular groove take shape in rotor core retainer plate outer wall, and described magnet ring then is arranged in this annular groove both sides.
The second, described rotor core cover have the annulus of projection, and described magnet ring then is arranged in these annulus both sides and laterally exceeds annulus and make between the adjacent magnet ring and form annular groove.
Further, the position roll forming that described rotor core retainer plate contacts with magnet ring has the dimpled grain of intersection, and described magnet ring is then cementing on this intersects the dimpled grain face by adhesive.
The number that described stator and magnet ring are same also is arranged in separately magnet ring periphery along the mandrel length direction, described each stator pack vinculum circle reaches the skeleton that is used for arranging coil, corresponding each skeleton is provided with ratchet and lower ratchet on one, aforesaid upper ratchet and lower ratchet have respectively stretch into the skeleton endoporus on stretch into section and under stretch into section.The magnetic field bundle of the compartment that even cylinder arranges is collected and formed to upper ratchet and lower ratchet, and it plays direct magnetic draw to rotor.
Further, described skeleton upper surface or lower surface are provided with projection, accordingly, offer the installing hole that cooperates plug-in mounting with aforementioned projection on described upper ratchet or the lower ratchet.Play the spacing effect of spline.
Described skeleton horizontal expansion is provided with a limiting section, has on this limiting section with coil is electrically connected to be connected the end, and accordingly, described housing one side has the limited mouth that limits skeleton for aforementioned limiting section setting.Stator just is connected and fixed with housing like this, and is simple in structure, arranges conveniently.
A kind of thermal printer, comprise body frame and be located at stepping motor on the body frame, driving gear component, rubber roll component, print head assembly, the active output gear engagement of the power intake of driving gear component and motor, the rubber-covered roll gear engagement of clutch end and rubber roll component, aforesaid stepping motor comprises housing, rotor, stator and end cap, stator is located in the housing, rotor comprises mandrel, be located at the rotor core retainer plate on the mandrel and be located at the magnet ring of rotor core retainer plate outer wall, magnet ring also and between the stator has the gap in stator, mandrel runs through housing and can rotate setting, end cap is located at the housing port, it is characterized in that described magnet ring is at least two, and be arranged between rotor core retainer plate outer wall and the adjacent magnet ring along the length direction of mandrel and have annular groove.
Compared with prior art, the invention has the advantages that: (being between adjacent two magnet rings) forms the annular space (being annular groove) that does not have magnetic to rotor in the middle part, this has just been avoided harassing of invalid magnetic field, has also reduced the bias of useless stray magnetic fields; In addition the rotor of this improvement project on the weight than the single-unit formula light in structure about 15%～30% of same specification size, so inertia is low, reaches the characteristics of fast response time, total fast response time can improve 30%～40%.
Description of drawings
Fig. 1 is the structural representation of prior art rotor.
Fig. 2 is the outside drawing of embodiment 1.
Fig. 3 is the decomposition installation diagram of Fig. 2.
Fig. 4 is the decomposition installation diagram at another visual angle of Fig. 2.
Fig. 5 is the enlarged drawing of Fig. 3 rotor core retainer plate.
Fig. 6 is the structure for amplifying schematic diagram of embodiment 1 rotor.
Fig. 7 is the structural representation of embodiment 2 rotors.
Fig. 8 is the decomposition installation diagram of thermal printer.
Embodiment
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
Such as Fig. 2～shown in Figure 6, stepping motor in the present embodiment comprises housing 1, rotor 2, stator and end cap 11, end cap 11 is located at housing 1 port, stator is located in the housing 1, rotor 2 comprises mandrel 23, be located at two rotor core retainer plates 21 on the mandrel 23 and be located at two magnet rings 22 of rotor core retainer plate 21 outer walls, accordingly, it is two, each stator 3 comprises coil 32 and is used for arranging the skeleton 31 of coil 32, corresponding each skeleton 31 is provided with ratchet 4 and lower ratchet 5 on one, magnet ring 22 in skeleton 31 and and skeleton 31 between have the gap, mandrel 23 runs through housing 1 and can rotate setting, mandrel 23 ends have 24, two magnet rings 22 of an active output gear and have annular groove 213 along being arranged on the length direction of mandrel between rotor core retainer plate 21 outer walls and the adjacent magnet ring 22.The position roll forming that rotor core retainer plate 21 contacts with magnet ring 22 has the dimpled grain of intersection 211, and magnet ring 22 is then cementing on 211 of this intersection dimpled grains, as shown in Figure 5 by adhesive.
Rotor core retainer plate 2 has the annulus 212 of projection, and 22 of magnet rings are arranged in these annulus 212 both sides and also laterally exceed annulus 212 and make formation annular groove 213 between the adjacent magnet ring 22.
Skeleton 31 upper surfaces are provided with upper protruding block 35, and the lower surface is provided with lower protruding block 36, accordingly, offer installing hole 42 and the installing hole 52 that cooperates plug-in mounting with projection on upper ratchet 4 and the lower ratchet 5.Upper ratchet 4 and lower ratchet 5 have respectively stretch into skeleton 31 endoporus on stretch into section 41 and under stretch into section 51.Upper ratchet 4 and lower ratchet 5 are very crucial structure in stepping motor, the axial magnetic field that coil 32 energisings produce, it is the magnetic field bundle of collecting and form the compartment that even cylinder arranges by upper ratchet 4 and lower ratchet 5, it plays direct magnetic draw to rotor, and the accuracy of its locus is very much crucial to the service behaviour of stepping motor.As shown in Figure 4, middle lower ratchet 5 and upper ratchet 4 also cooperate spacing by projection 51a and installing hole 41a.
Skeleton 3 horizontal expansions are provided with a limiting section 33, have on this limiting section 33 with coil 32 is electrically connected to be connected end 34, and accordingly, housing 1 one sides have the limited mouth 12 that arranges to limit skeleton for limiting section 33.
Embodiment 2, and as shown in Figure 7, the annular groove 213 in the present embodiment takes shape in rotor core retainer plate 21 outer walls, and magnet ring 22 then is arranged in this annular groove 213 both sides.Other structures are with reference to embodiment 1.
(being between adjacent two magnet rings) forms the annular space that does not have magnetic to rotor in the middle part, and this has just been avoided harassing of invalid magnetic field, has also reduced the bias of useless stray magnetic fields; In addition the rotor of this improvement project on the weight than the single-unit formula light in structure about 15%～30% of same specification size, so inertia is low, reaches the characteristics of fast response time, total fast response time can improve 30%～40%.
As shown in Figure 8, thermal printer comprises body frame and is located at stepping motor 100, driving gear component 2b, rubber roll component 3b, print head assembly 5b on the body frame, active output gear 24 engagements of the power intake of driving gear component 2b and stepping motor, the rubber-covered roll gear 31b engagement of clutch end and rubber roll component.Stepping motor 100 concrete structures here can be with reference to embodiment 1 or embodiment 2.
Claims (4)
1. thermal printer, comprise body frame and be located at stepping motor on the body frame, driving gear component, rubber roll component, print head assembly, the active output gear engagement of the power intake of driving gear component and motor, the rubber-covered roll gear engagement of clutch end and rubber roll component, aforesaid stepping motor comprises housing, rotor, stator and end cap, stator is located in the housing, rotor comprises mandrel, be located at the rotor core retainer plate on the mandrel and be located at the magnet ring of rotor core retainer plate outer wall, magnet ring also and between the stator has the gap in stator, mandrel runs through housing and can rotate setting, end cap is located at the housing port, it is characterized in that described magnet ring is at least two, and be arranged between rotor core retainer plate outer wall and the adjacent magnet ring along the length direction of mandrel and have annular groove;
The position roll forming that described rotor core retainer plate contacts with magnet ring has the dimpled grain of intersection, and described magnet ring is then cementing on this intersects the dimpled grain face by adhesive;
The number that described stator and magnet ring are same also is arranged in separately magnet ring periphery along the mandrel length direction, described each stator pack vinculum circle reaches the skeleton that is used for arranging coil, corresponding each skeleton is provided with ratchet and lower ratchet on one, aforesaid upper ratchet and lower ratchet have respectively stretch into the skeleton endoporus on stretch into section and under stretch into section;
Described skeleton upper surface or lower surface are provided with projection, accordingly, offer the installing hole that cooperates plug-in mounting with aforementioned projection on described upper ratchet or the lower ratchet.
2. thermal printer according to claim 1 is characterized in that described annular groove takes shape in rotor core retainer plate outer wall, and described magnet ring then is arranged in this annular groove both sides.
3. thermal printer according to claim 1 is characterized in that described rotor core cover has the annulus of projection, and described magnet ring then is arranged in these annulus both sides and laterally exceeds annulus and make between the adjacent magnet ring and form annular groove.
4. the described stepping motor of arbitrary claim according to claim 1～3, it is characterized in that described skeleton horizontal expansion is provided with a limiting section, has the end that is connected with the coil electrical connection on this limiting section, accordingly, described housing one side has the limited mouth that limits skeleton for aforementioned limiting section setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010588016 CN102035349B (en) | 2010-12-03 | 2010-12-03 | Thermal printer using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010588016 CN102035349B (en) | 2010-12-03 | 2010-12-03 | Thermal printer using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102035349A CN102035349A (en) | 2011-04-27 |
| CN102035349B true CN102035349B (en) | 2013-01-16 |
Family
ID=43887826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010588016 Expired - Fee Related CN102035349B (en) | 2010-12-03 | 2010-12-03 | Thermal printer using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102035349B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1289169A (en) * | 1999-09-22 | 2001-03-28 | 精工爱普生株式会社 | Permanent magnetic step-by-step motor |
| CN1823464A (en) * | 2003-12-03 | 2006-08-23 | 美蓓亚株式会社 | Stepping motor |
| CN201179756Y (en) * | 2008-02-25 | 2009-01-14 | 厦门精芯科技有限公司 | Novel thermal printer cassette |
| CN201994822U (en) * | 2010-12-03 | 2011-09-28 | 宁波精芯科技有限公司 | Stepping motor and temperature-sensitive printer using same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101434151B (en) * | 2007-11-13 | 2010-10-13 | 旭丽电子(广州)有限公司 | Heat sublimation printer |
-
2010
- 2010-12-03 CN CN 201010588016 patent/CN102035349B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1289169A (en) * | 1999-09-22 | 2001-03-28 | 精工爱普生株式会社 | Permanent magnetic step-by-step motor |
| CN1823464A (en) * | 2003-12-03 | 2006-08-23 | 美蓓亚株式会社 | Stepping motor |
| CN201179756Y (en) * | 2008-02-25 | 2009-01-14 | 厦门精芯科技有限公司 | Novel thermal printer cassette |
| CN201994822U (en) * | 2010-12-03 | 2011-09-28 | 宁波精芯科技有限公司 | Stepping motor and temperature-sensitive printer using same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102035349A (en) | 2011-04-27 |
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Granted publication date: 20130116 Termination date: 20151203 |
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