CN2905444Y - Color tape drive device - Google Patents
Color tape drive device Download PDFInfo
- Publication number
- CN2905444Y CN2905444Y CN 200620068457 CN200620068457U CN2905444Y CN 2905444 Y CN2905444 Y CN 2905444Y CN 200620068457 CN200620068457 CN 200620068457 CN 200620068457 U CN200620068457 U CN 200620068457U CN 2905444 Y CN2905444 Y CN 2905444Y
- Authority
- CN
- China
- Prior art keywords
- driving device
- gear
- output shaft
- worm screw
- ribbon driving
- Prior art date
- 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 - Fee Related
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Abstract
The utility model is a ribbon driving device which comprises an electric motor, an output shaft, a worm and a spiral gear. The said work is driven by the electric motor via the spur gear, the worm and the spiral gear bite, and the spiral gear is coaxially dead jointed with the output shaft. The said worm and the second spur gear are integrated through injection molding, and can be connected with the output shaft of various electric motors to enable the use on diverse occasions. The injection molding enables to integrate the worm and common spur gear with an appropriate mode number and gear number in the limited space, and form a gear decelerating system with the electric motor gear. This design not only obtains a considerable moderating ratio, but also maximizes the use of space. Besides, this design enables a compact structure and an extensive and stable travel of the ribbon.
Description
[technical field]
The utility model is about a kind of printer peripheral equipment, particularly a kind of ribbon driving device.
[background technology]
At present, adopt colour band as the impact printer of consumptive material as modal computer peripheral, have history remote, in the bill printing field, fields such as bank securities report printing still are widely used.Common printer color tape driving mechanism all uses the motor of word truck system to move by colour band actuator drives colour band when driving the word car usually, continuous lifting along with printer word vehicle speed, and the colour band speed of service is slower relatively, the gearratio that colour band transmission mechanism in the narrow and small volume between connective word vehicle motor and the ribbon cartridge provides is very limited, higher according to the quality tape running speed, to the wearing and tearing of printhead increase and to colour band itself move stable unfavorable, simultaneously also will comparatively complicated gear wheel reversing mechanism in the deceleration system, could realize word vehicle motor way traffic and the colour band unidirectional operation, on the other hand, in colour band uses or the super life-span when using friction increase even stop up, because resistance promotes at double, might damage or the word vehicle motor can't bear the heavy load and step-out takes place according to the quality driving transmission mechanism, these question synthesis together, do not make existing colour band transmission mechanism stability high relatively and owing to reasons such as the super life-span uses of colour band, cause the colour band core to be involved in the colour band driving mechanism, the tape drive mechanism of can checking colors shines into heavy damage, in case destroy, often according to more serious damages such as one-tenth gear breakings, therefore, existing colour band driving mechanism is bearing the damage limit, aspects such as the colour band speed of service exist not enough.
[summary of the invention]
Technical problem to be solved in the utility model be at prior art not enough and provide a kind ofly have a reliability height, extensive adaptive colour band driving mechanism, it can keep the even running of colour band low speed to improve its functional reliability, and can provide bigger torsion output to adapt to the plurality of color tape drum, the damage that when structural strength is than situations such as the super life-span operations of high energy opposing colour band simultaneously the colour band drive system is caused.
The utility model solves the problems of the technologies described above by the following technical programs: a kind of ribbon driving device, comprise motor, output shaft, worm screw and helical gear, described worm screw is by motor-driven, worm screw and helical gear interlock, and helical gear is fixedlyed connected with output shaft is coaxial.
The angle of spiral of worm screw and helical gear spiral angle of graduated circle equate, and described spiral angle of graduated circle value is less than 8 degree.
Also comprise a ratchet transmission mechanism, described ratchet transmission mechanism and helical gear and output shaft are coaxial is cured as one, and the ratchet transmission mechanism comprises coaxial ratchet and ratchet, and what ratchet was coaxial is fixed on the output shaft.
One first spur gear is fixed on the output shaft of described motor, and on the coaxial fixed axis that is fixed on described worm screw of one second spur gear, first spur gear drives second spur gear.
Described worm screw uses a kind of microcephaly to count straight sided axial worm (ZA worm screw) type, and a number is 1～3.
The helical gear number of teeth can be less than 27 teeth.
The described worm screw and second spur gear use the injection mo(u)lding part, and the material of finished parts is got POM (polyformaldehyde) based material of band self-lubricating property.
The advantage of the utility model ribbon driving device is: above-mentioned worm screw and spur gear are made of one by injection mo(u)lding, can be easily connect with different motor output shaft, reach the effect in multiple occasion utilization.In limited volume, method by injection mo(u)lding links into an integrated entity the ordinary straight gear of worm screw with suitable modulus, the number of teeth, form gear reduction system with the motor gear engagement, not only can obtain considerable speed reducing ratio once more, reduce simultaneously the use in space to greatest extent, and make compact conformation, and make colour band core operational speed range wide and steady.
[description of drawings]
The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the stereochemical structure sketch of the utility model ribbon driving device.
Fig. 2 is the view of direction II among Fig. 1, and full section.
Fig. 3 is the bottom view of ribbon driving device among Fig. 1.
[specific embodiment]
As shown in Figure 1, the utility model is a kind of ribbon driving device, is used to comprise multiple impact printer ribbon driving device.
Please consult Fig. 2, shown in Figure 3 simultaneously, the whole parts of this mechanism are arranged between first fixed mount 1, second fixed mount 2 of printer, and this mechanism is a standalone module, and is easy for installation.This ribbon driving device comprises first spur gear 10, second spur gear 20, worm screw 40, helical gear 50, output shaft 60, ratchet transmission mechanism 70.
The power source of this ribbon driving device is provided by one 35 serial stepper motor 3, first spur gear 10 is fixed on the output shaft of motor 3, second spur gear 20 is fixed on the fixed axis of worm screw 40, worm screw 40 and helical gear 50 interlocks, and helical gear 50 and output shaft 60 coaxial fixedlying connected, ratchet transmission mechanism 70 and helical gear 50 and output shaft 60 coaxial being connected as one, ratchet transmission mechanism 70 comprises coaxial ratchet 72 and ratchet 74, ratchet 74 tops are shaped on the zigzag ratchet mechanism, between helical gear 50 and fixed mount 2 fixed positions bearing holder (housing, cover) 51 are housed.
The operation principle of the utility model ribbon driving device is as follows, motor 3 with rotating torque by first spur gear 10, be passed to second spur gear 20, second spur gear 20 is passed to helical gear 50 by co-axially fixed worm screw 40 with it with moment, amplified moment by the big speed ratio between worm screw 40 and the helical gear 50, helical gear 50 exports the output shaft 60 of moment by side fixed thereon to the ribbon cartridge driving wheel, drives the running of colour band core.The effect of ratchet transmission mechanism 70 is as follows; because the colour band of output shaft 60 final sum printers connects; and the requirement that colour band uses is that the colour band core can only constantly circulate towards a direction; simultaneously; when transmission system is failure to actuate; requirement can manually be rotated the colour band core by the user towards the work rotation direction; and the transmission system of helical gear 50 and worm screw 40 has latching characteristics and input and output are irreversible; so need the transmission mechanism that permission of increase is oppositely skidded to address this problem; the utility model is provided with this ratchet transmission mechanism and promptly turns to all the time effect towards a direction in order to reach control output; when output has the moment of torsion input simultaneously; can be by the unidirectional slipping protection transmission mechanism of this ratchet transmission mechanism; the specific embodiment is as follows; when the output torque of motor 10 is delivered to helical gear 50; when being delivered to the ratchet transmission mechanism 70 that is fixed on the helical gear 50 simultaneously; this moment, ratchet 72 and ratchet 74 kept in touch and not relative motion; directly moment is delivered to the colour band core by output shaft 60 and drives the running of colour band core; when the outside has external force to act on output shaft 60 and the ratchet 72; when the colour band core being screwed as manual effect; the rotating torque of hand acts on the ratchet 72 by output shaft 60; then ratchet 72 and ratchet 74 produce relative motion; keep slipping state; so just protected inner helical gear 50; parts such as worm screw 40 and each spur gear are not subjected to the external force effect and damage, and have satisfied the actual user demand that manually screws the colour band core simultaneously.
The utility model ribbon driving device is installed in the bottom of ribbon cartridge driving wheel, because of each parts mainly is that bearing capacity is stronger, so faults such as the obstruction of various colour bands are difficult to damage this mechanism and inner part, simultaneously because in-house, particularly adopted very big gearratio between worm screw 40 and the helical gear 50, so the output torque of motor 3 obtains bigger amplification, gearratio can reach more than 1: 13, reach 1: 16 in the present embodiment, use after the long period or even after the super life-span uses for the colour band core, when the inner resistance of ribbon cartridge own increases exponentially, system still can holding torque steadily export, that is to say that this ribbon driving device is insensitive to the reacting condition of load, can adapt to very big load occasion.
Because the actual size volume of the utility model ribbon driving device is less, according to different occasion needs, motor 3 can also be replaced by the littler or bigger series of volume, model, drives occasion so can be useful in the various colour bands of existing stylus printer.
Claims (9)
1. a ribbon driving device comprises motor, and output shaft is characterized in that: comprise worm screw and helical gear, described worm screw is by motor-driven, worm screw and helical gear interlock, and helical gear is fixedlyed connected with output shaft is coaxial.
2. ribbon driving device as claimed in claim 1 is characterized in that: the angle of spiral of worm screw and helical gear spiral angle of graduated circle equate, and described spiral angle of graduated circle value is less than 8 degree.
3. the ribbon driving device of stating as claim 2 is characterized in that: described spiral angle of graduated circle value is 6 degree.
4. ribbon driving device as claimed in claim 1, it is characterized in that: comprise a ratchet transmission mechanism, described ratchet transmission mechanism and helical gear and output shaft are coaxial is cured as one, and the ratchet transmission mechanism comprises coaxial ratchet and ratchet, and what ratchet was coaxial is fixed on the output shaft.
5. ribbon driving device as claimed in claim 1 is characterized in that: one first spur gear is fixed on the output shaft of described motor, and on the coaxial fixed axis that is fixed on described worm screw of one second spur gear, first spur gear drives second spur gear.
6. ribbon driving device as claimed in claim 1 is characterized in that: ribbon driving device is equipped with bearing holder (housing, cover) between the fixed position of the helical gear and second fixed mount between first fixed mount and second fixed mount of printer.
7. ribbon driving device as claimed in claim 1 is characterized in that: worm screw uses a kind of microcephaly to count the straight sided axial worm type, and a number is 1～3.
8. ribbon driving device as claimed in claim 1 is characterized in that: the helical gear number of teeth is less than 27 teeth.
9. ribbon driving device as claimed in claim 1 is characterized in that: described worm screw and the 3rd spur gear use the injection mo(u)lding part, and the material of finished parts is got the POM based material of band self-lubricating property.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620068457 CN2905444Y (en) | 2006-01-11 | 2006-01-11 | Color tape drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620068457 CN2905444Y (en) | 2006-01-11 | 2006-01-11 | Color tape drive device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2905444Y true CN2905444Y (en) | 2007-05-30 |
Family
ID=38114076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620068457 Expired - Fee Related CN2905444Y (en) | 2006-01-11 | 2006-01-11 | Color tape drive device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2905444Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100999161B (en) * | 2006-01-11 | 2010-07-21 | 福建实达电脑设备有限公司 | Ribbon driving device |
-
2006
- 2006-01-11 CN CN 200620068457 patent/CN2905444Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100999161B (en) * | 2006-01-11 | 2010-07-21 | 福建实达电脑设备有限公司 | Ribbon driving device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070530 Termination date: 20150111 |
|
| EXPY | Termination of patent right or utility model |