Belt-tension regulating apparatus and use the optical scanner of this regulating device
Technical field
The invention relates to a kind of belt-tension regulating apparatus, and particularly relevant for a kind of belt-tension regulating apparatus that is applied to adjust the drivign belt tension force of an optical scanner mould device, and the optical scanner that uses this regulating device.
Background technique
Input, processing and processing at image, become after a kind of popular interest, scanner just becomes one of basic outfit of many computer users, and it can be with the literal or the image document of file, magazine, books, picture etc., and scanning input computer is also handled.In various scanners, falt bed scanner is the most frequently used a kind of, and in falt bed scanner, scan module is to be installed on transparent platform below in the mode that can spur back and forth, places file on the transparent platform with scanning.Scan module itself is not had power again, therefore needs for example drive as driving mechanisms such as servomotor, gear, belts.When desire uses a falt bed scanner to scan a file again, file must be placed on the transparent platform, again the file cover plate be covered, smooth with the compressing file in transparent platform, scan then.
With reference to Fig. 1, known optical scanner comprises a main body cover 100, one scan module 800, a driving mechanism 500, a drivign belt 700, two belt wheels 720 and file cover plates 200.Wherein, have a light-transmitting plate 400 on the main body cover 100, scan module 800, driving mechanism 500, drivign belt 700, and two belt wheels 720 etc. all be disposed at the inside of main body cover 100.Again, drivign belt 700 is connected in 720 of two belt wheels, one of them belt wheel 720 is connected in driving mechanism 500, and be subjected to the driving of driving mechanism 500 and drive drivign belt 700, can get off to pull back moving in main body cover 100 inside, light-transmitting plate 400 so that be connected in the scan module 800 of drivign belt 700.When the scanning desiring to carry out to a file 300, file 300 is to be placed horizontally on the light-transmitting plate 400, file cover plate 200 is covered scan again.Driving mechanism 500 comprises transmitting assembliess such as motor 520 and gear train 540, during scanning, motor 520 meeting driving cluster gear 540 are to drive the follow-up belt wheel that is connected 720, drivign belt 700, scan module 800 in regular turn, to carry out being placed horizontally at the scanning of the file 300 on the light-transmitting plate 400.
Wherein, be connected in the drivign belt 700 of 720 of two belt wheels, must keep certain force of strain, just be enough to make it can stably drive scan module 800, therefore, if drivign belt 700 then must impose external force to it when the assembling assembling, so that it has certain force of strain.Then, if when adjustment adjustment or maintenance, when running into the situation that it must be disassembled, then must earlier its tension force be eliminated and just conveniently carry out operation, its the most direct mode is that 720 dismountings of a first wherein belt wheel are unclamped, and move the distance that makes 720 of two belt wheels and shorten, the tension force with the drivign belt 700 of loosening like this.Yet the step of this mode is too complicated, when too high as if the frequency of dismounting drivign belt 700, can cause the waste on the time cost.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of belt-tension regulating apparatus, by the elastic force that this belt-tension regulating apparatus had, make the local buckling of drivign belt and keep a suitable tension force, and can easily adjust the tension force of drivign belt by this, install and the dismounting drivign belt when assembling convenient for assembly, maintenance or adjustment.
The object of the present invention is to provide a kind of belt-tension regulating apparatus, comprise a leaf spring, elastic force by this leaf spring, make the local buckling of drivign belt and keep a suitable tension force, and can easily adjust the tension force of drivign belt by this, install or the dismounting drivign belt when assembling convenient for assembly, maintenance or adjustment.
Above-mentioned belt-tension regulating apparatus more comprises an extension spring, for example a draft helical spring.Be aided with the elastic force of this leaf spring by the elastic force of extension spring, make the local buckling of drivign belt and keep a suitable tension force, and can easily adjust the tension force of drivign belt by this, installing/dismounting drivign belt when assembling convenient for assembly, maintenance or adjustment.
According to above-mentioned purpose of the present invention, the present invention proposes a kind of belt-tension regulating apparatus, is suitable for making the drivign belt in the equipment to keep a suitable tension force.This equipment has a main body cover, two belt wheels and a transmission device at least.These belt wheels, transmission device, all be disposed in the main body cover with drivign belt, drivign belt then is connected between two belt wheels, and transmission device is connected in a wherein belt wheel, drives drivign belt and moves to drive this belt wheel.Belt-tension regulating apparatus of the present invention comprises a leaf spring and/or an extension spring.And leaf spring slightly is one arc, is held on drivign belt, makes the local buckling of drivign belt and is maintained a suitable tension force.If add extension spring, then the two ends of this extension spring are connected to the two ends of leaf spring, with the elastic fatique that provides an auxiliary elastic force to prevent leaf spring, this elastic fatique comprises for example after long-time the use or because the reason that ambient temperature changes causes.
Again, the present invention proposes a kind of belt-tension regulating apparatus, is applied to an optical scanner.This optical scanner comprises a main body cover, one scan module, a driving mechanism, two belt wheels and a drivign belt at least.Wherein, main body cover has a transparent platform, and scan module is to be installed on transparent platform below in the main body cover in the mode that can spur back and forth, is suitable for scanning a file that places on the transparent platform.Driving mechanism, drivign belt, and belt wheel all be disposed at main body cover inside.Drivign belt is connected between two belt wheels, and transmission device then is connected in a wherein belt wheel, drives drivign belt to drive this belt wheel, moves to drive scan module.Belt-tension regulating apparatus of the present invention can comprise a leaf spring and/or an extension spring.It is one arc that wherein above-mentioned leaf spring slightly is, and is held between drivign belt, and the local buckling that makes drivign belt is to keep a suitable tension force.And the two ends of extension spring are connected to the two ends of leaf spring, prevent that so that an auxiliary elastic force to be provided leaf spring from using or because the former thereby elastic fatique that ambient temperature changes because of long-time.
Again, the present invention proposes a kind of optical scanner, comprising: a main body cover, two belt wheels, a drivign belt, one scan module, a driving mechanism, a leaf spring and an extension spring.Wherein above-mentioned main body cover has a transparent platform, two belt wheels, drivign belt, one scan module, driving mechanism all are disposed at this main body cover inside, drivign belt is connected between the above-mentioned belt wheel, scan module then is installed in the main body cover transparent platform below in the mode that can spur back and forth, and is connected in drivign belt and drives to be subjected to it.Driving mechanism connects wherein a belt wheel to drive this belt wheel.It is one arc that one leaf spring slightly is, and is held on drivign belt, and the local buckling that makes drivign belt is to keep a suitable tension force.In addition, the drivign belt on the above-mentioned optical scanner more can be connected to the two ends of an extension spring two ends of leaf spring, prevents that so that an auxiliary elastic force to be provided leaf spring from using or because the former thereby elastic fatique of ambient temperature change because of long-time.
Wherein, above-mentioned leaf spring can be between complete open one first state and closed fully one second state the stressed resiliently deformable that is, when leaf spring was held on drivign belt, leaf spring was in the third state between first state and second state again.
Leaf spring has more two clamping structures, lays respectively at the two ends of leaf spring, is suitable for making leaf spring to be held between drivign belt.Leaf spring has more two draw-in groove structures again, lays respectively at its two ends, and extension spring has more two block hook structures, lays respectively at its two ends, two block hook structures respectively hook in a draw-in groove structure wherein, so that the two ends of extension spring are connected to the two ends of leaf spring.
Driving mechanism more comprises a motor and a driving gear set, and motor is connected in driving gear set, and driving gear set is connected in a wherein belt wheel.Motor is suitable for driving driving gear set to drive a wherein belt wheel.The form of drivign belt comprises inserted belt.
According to feature of the present invention, by the elastic force of leaf spring, and/or be the elastic force that adds extension spring combination, make the local buckling of drivign belt and keep a suitable tension force.
According to feature of the present invention, as long as the application of force pulls open leaf spring, just can easily adjust the tension force of drivign belt, install or the dismounting drivign belt when convenient for assembly, maintenance or adjustment.
Description of drawings
For above and other objects of the present invention, feature and advantage can be become apparent,, be described in detail below below in conjunction with accompanying drawing:
Fig. 1 is the side generalized section of known optical scanner mould device;
Fig. 2 is the side generalized section of embodiment of the invention optical scanner mould device;
Fig. 3 is the schematic perspective view of embodiment of the invention belt-tension regulating apparatus;
Fig. 4 is the perspective exploded view of embodiment of the invention belt-tension regulating apparatus;
Fig. 5 is the schematic perspective view of embodiment of the invention belt-tension regulating apparatus when not stressed;
The schematic perspective view of Fig. 6 when to be that embodiment of the invention belt-tension regulating apparatus is stressed open fully;
Fig. 7 is the stressed complete schematic perspective view when closed of embodiment of the invention belt-tension regulating apparatus;
Fig. 8 is the schematic perspective view of the drivign belt of another form of present embodiment.
The number in the figure explanation
100,1100: main body cover
200,1200: the file cover plate
300,1300: file
400,1400: light-transmitting plate
500,1500: driving mechanism
520,1510: motor
540,1520: driving gear set
700,1700: drivign belt
720,1720: belt wheel
800,1800: scan module
1900: belt-tension regulating apparatus
1910: leaf spring
1912: clamping structure
1914: the draw-in groove structure
1920: extension spring
1922: block hook structure
Embodiment
Embodiment 1
The invention provides a kind of belt-tension regulating apparatus, by the elastic force that this belt-tension regulating apparatus had, make the local buckling of drivign belt and keep a suitable tension force, and can easily adjust the tension force of drivign belt by this, install and the dismounting drivign belt when assembling convenient for assembly, maintenance or adjustment.And above-mentioned belt-tension regulating apparatus can be reached by a for example leaf spring.By the elastic force of this leaf spring, make the local buckling of drivign belt and keep a suitable tension force, and can easily adjust the tension force of drivign belt by this, install or the dismounting drivign belt when assembling convenient for assembly, maintenance or adjustment.And if for fear of leaf spring because of environment or the factor of use causes elastic fatique, then can increase by an extension spring in above-mentioned belt-tension regulating apparatus, for example a draft helical spring.Be aided with the elastic force of this leaf spring by the elastic force of extension spring, make the local buckling of drivign belt and keep a suitable tension force, and can easily adjust the tension force of drivign belt by this, dismounting drivign belt when assembling convenient for assembly, maintenance or adjustment.
Please refer to Fig. 2, is the side generalized section of the embodiment of the invention.In the same manner, it comprises a main body cover 1100, one scan module 1800, a driving mechanism 1500, a drivign belt 1700, two belt wheels 1720 and file cover plates 1200.Wherein, have a light-transmitting plate 1400 on the main body cover 1100, scan module 1800, driving mechanism 1500, drivign belt 1700, and two belt wheels 1720 etc. all be disposed at the inside of main body cover 1100.Again, drivign belt 1700 is connected in 1720 of two belt wheels, wherein a belt wheel 1720 is connected in driving mechanism 1500, and be subjected to the driving of driving mechanism 1500 and drive drivign belt 1700, so that be connected in the scan module 1800 of drivign belt 1700, can be in main body cover 1100 inside, light-transmitting plate 1400 belows spur back and forth.
When desiring to carry out to the scanning an of file 1300, file 1300 is to be placed horizontally on the light-transmitting plate 1400, file cover plate 1200 is covered to scan again.Wherein, driving mechanism 1500 can comprise transmitting assembliess such as motor 1510 and gear train 1520, and motor 1510 is connected in gear train 1520, and gear train 1520 is connected in a wherein belt wheel 1720.During scanning, motor 1510 meeting driving cluster gear 1600 are to drive the follow-up belt wheel that is connected 1720, drivign belt 1700, scan module 1800 in regular turn, to carry out being placed horizontally at the scanning of the file 1300 on the light-transmitting plate 1400.
Keep certain force of strain for making the drivign belt 1700 that is connected in 1720 of two belt wheels, make it can stably drive scan module 1800, the invention provides a belt-tension regulating apparatus 1900, as shown in Figure 3, the tension force of keeping by its elastic force can be fixed its drivign belt 1700.And this belt-tension regulating apparatus 1900 can be a leaf spring 1910, perhaps can optionally add an extension spring 1920 in leaf spring 1910.
It is one arc that leaf spring 1910 slightly is, its two ends have a clamping structure 1912 respectively, leaf spring 1910 is clamped and fastened on the drivign belt 1700, and makes the local buckling of drivign belt 1700 become similarly arc, therefore make drivign belt 1700 be maintained a suitable tension force.And extension spring 1920 can for example be a draft helical spring.Shown in the three-dimensional exploded view of Fig. 4 belt-tension regulating apparatus 1900, the two ends of extension spring 1920 are connected to the two ends of leaf spring 1910, to provide leaf spring 1,910 one auxiliary elastic force, avoid leaf spring 1910 because of long-time use or the change of ambient temperature produces the elastic fatique phenomenon.When for example at present industry often used shipping to transport product, the high temperature that is produced in counter often caused the elastic fatique of leaf spring, and therefore, it is so auxiliary that this extension spring then can provide.
Extension spring 1920 two ends are connected to the mode at leaf spring 1910 two ends, are included in leaf spring 1910 two ends and form a draw-in groove structure 1914 respectively, and form a block hook structure 1922 respectively in leaf spring 1910 two ends.So can make two block hook structures 1922 respectively grabs and make extension spring 1920 two ends can be connected to leaf spring 1910 two ends in a draw-in groove structure 1914 wherein.
Again, as shown in Figure 5, be the state of leaf spring 1910 when not stressed, and this arc leaf spring 1910 can be between fully closed second state (approximately as shown in Figure 7) of complete open first state (approximately as shown in Figure 6) and the stressed resiliently deformable that is, that is first state and second state are respectively the leaf spring 1910 force-applied scopes that are resiliently deformable.When leaf spring 1910 is clamped and fastened on the drivign belt 1700, shown in the 3rd figure, leaf spring 1910 can form comparatively open third state when more not stressed than Fig. 5, and leaf spring 1910 open degree can be between first state and second state when this third state.That is to say that this moment, leaf spring 1910 can provide local buckling that an elastic force makes drivign belt 1700 to become similarly arc keeping a suitable tension force, and this elastic force is in the regime of elastic deformation of leaf spring 1910.
When desire disassembles drivign belt 1700 optical scanner mould device is carried out adjustment or when maintenance; as long as the application of force equalizes leaf spring 1910 near complete open first state scope of its resiliently deformable (but do not surpass); with the elastic force that unclamps leaf spring 1910 tension force that drivign belt 1700 is produced is limited; after so the tension force of drivign belt 1700 is eliminated; the operator promptly can take off drivign belt 1700 at an easy rate, carries out adjustment or maintenance with other part to optical scanner mould device.
The form of drivign belt 1700, inserted belt that can be as shown in Figure 8, its belt wheel 1720 is then for having corresponding inserted form.
According to the embodiment of the invention described above as can be known, the present invention has following advantage at least:
(1), makes the local buckling of drivign belt and keep a suitable tension force by the belt-tension regulating apparatus elastic force of leaf spring for example.And this leaf spring more can be aided with the combination of extension spring elastic force, can prolong the life-span of belt-tension regulating apparatus, and the situation that more can avoid can't using because of device that external factor causes takes place.
(2) as long as the application of force pulls open leaf spring, just can easily adjust the tension force of drivign belt, install when assembling convenient for assembly, maintenance or adjustment or the dismounting drivign belt.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limiting the present invention, anyly has the knack of this skill person, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is when looking being as the criterion that claims define.