CN101207690B - Scanner drive - Google Patents

Abstract

A transmission device of scanner is prepared as setting image picking up component in base of scanner, setting rotary wheel and the first roller at internal side of base, setting the driving roller under the first roller, sleeving transmission belt on external periphery of rotary wheel, the first roller and the driving roller, setting the second roller between rotary wheel and driving roller for supporting transmission belt between rotary wheel and driving roller, making transmission belt between rotary wheel and the second roller be parallel to transmission belt between rotary wheel and the first roller, driving transmission belt to drive image picking up component to move by means of driving roller to reduce space between image picking up component and base and to reduce size of base.

Description

Scanner drive

technical field

The invention relates to a transmission device, in particular to a transmission device of a scanner.

Background technique

With the advancement of technology and the development of technology, scanners have become common computer interface devices, and even built-in scanners in MFPs provide the function of scanning documents. The scanner mainly uses the internal image capture device to capture the graphics, images, and text of the document, and converts it into a digital signal and then sends it to the computer for processing.

Please refer to Fig. 1 and Fig. 2, it is the transmission mechanism of the existing scanner, which is arranged in the base A1 of the scanner. The driving wheel A211, a passive wheel A212 and an endless conveyor belt A213 are combined, and the endless conveyor belt A213 is fitted on the driving wheel A211 and the passive wheel A212 respectively, so as to use the conveying device A21 to drive the image capture The fetching device A3 moves back and forth in the base A1 of the scanner to scan the document image.

Since the existing transmission mechanism is limited by the size of the image capture device A3, coupled with the limitation of the position of the rotating speed motor A22 and the driving wheel A211, when the image capture device A3 is displaced in the base A1, in order to avoid the image capture device When A3 is displaced, it hits the driving wheel A211 and is damaged. The image capture device A3 cannot be too close to the driving wheel A211, so that a gap between the image capture device A3 and the base A1 needs to be reserved as a buffer space, resulting in waste of space and slow scanning The volume of the instrument increases.

It can be seen that how to reduce the volume of the scanner, make the scanner lighter and improve the convenience of use is a subject that the inventors of the present application and those in the technical field engaged in this related industry want to improve.

Contents of the invention

In view of this, the present invention proposes a transmission device for a scanner, which drives an image capture component to displace. The device includes: a rotating wheel; a first roller; a driving roller located below the first roller; The other end of the wheel fits over the first roller and the driving roller, and the driving roller drives the conveyor belt to rotate; and the second roller is pivotally arranged between the runner and the driving roller, and is used to support the conveyor belt between the runner and the driving roller , so that the conveyor belt between the runner and the second roller is parallel to the conveyor belt between the runner and the first roller.

When the present invention is installed in the base of the scanner, the conveyor belt is driven by the driving roller to drive the displacement of the image capture component, so that the image capture component is displaced between the rotating wheel and the first roller to perform image capture, and by setting the second roller The first roller and the second roller change the path of the conveyor belt, so that the image capture unit can be displaced above the first roller, and the starting point of the displacement is close to the periphery of the base, so as to reduce the distance between the image capture unit and the base , so as to achieve the purpose of reducing the volume of the base.

Wherein, the size of the first roller is smaller than the size of the rotating wheel, so that the image capture component can be displaced to the top of the first roller along with the conveyor belt. In addition, the image capture component can be displaced to a position close to the periphery of the base, so that the image There is no gap between the capture component and the base to reduce the volume of the base.

The driving roller disclosed in the present invention can be further connected with a power component to drive the driving roller to rotate, so that the conveyor belt can drive the image capture component to move. In addition, the conveyor belt can be a belt or a steel cable, and the tension can be adjusted without additional tension adjustment springs.

The present invention also proposes a scanner transmission device installed in the base of the scanner. The transmission device includes: an image capture component disposed in the base; a rotating wheel pivoted on one side of the base; a first The roller is pivotally arranged on the side of the base away from the runner; the driving roller is located below the first roller; the conveyor belt is fitted on the runner at one end and fitted on the first roller and the driving roller at the other end; and the second roller, Pivoted between the runner and the driving roller, it is used to support the conveyor belt between the runner and the driving roller, so that the conveyor belt between the runner and the second roller and the conveyor belt between the runner and the first roller are parallel to each other.

The present invention drives the conveyor belt by means of driving rollers to drive the displacement of the image capture component, so that the image capture component is displaced between the rotating wheel and the first roller to perform image capture, and by setting the first roller and the second roller to change the position of the conveyor belt path, so that the image capture component can be displaced to the top of the first roller, and the starting point of the displacement is close to the periphery of the base, so as to reduce the distance between the image capture component and the base, thereby achieving the purpose of reducing the volume of the base .

Wherein, the size of the first roller is smaller than the size of the rotating wheel, so that the image capture component can be displaced to the top of the first roller along with the conveyor belt. In addition, the image capture component can be displaced to a position close to the periphery of the base, so that the image There is no gap between the capture component and the base to reduce the volume of the base.

The driving roller disclosed in the present invention can also be connected with a power component to drive the driving roller to rotate, so that the conveyor belt can drive the image capture component to displace. In addition, the conveyor belt can be a belt or a steel cable, and the tension can be adjusted without additional tension adjustment springs.

The preferred embodiments of the present invention and their effects will be described in conjunction with the accompanying drawings as follows.

Description of drawings

FIG. 1 is a three-dimensional appearance view of a transmission mechanism of a conventional scanner.

FIG. 2 is a schematic side view of a transmission mechanism of a conventional scanner.

Fig. 3 is a schematic side view of the transmission device of the present invention.

FIG. 4 is a schematic diagram (1) of the movement of the displacement of the image capture component of the present invention.

FIG. 5 is a schematic diagram (2) of the movement of the displacement of the image capture component of the present invention.

Detailed ways

Please refer to Fig. 3, Fig. 4 and Fig. 5, the embodiment of the transmission device of the scanner is shown in the figure, Fig. 3 is a schematic side view of the transmission device, Fig. 4 is a schematic diagram of the movement of the displacement of the image capture component (1), Fig. 5 is a schematic diagram (2) of the movement of the displacement of the image capture component.

The transmission device of the scanner includes: an image capturing component 10 , a rotating wheel 20 , a first roller 30 , a driving roller 40 , a conveyor belt 50 , and a second roller 60 .

The image capturing component 10 is disposed in the base 80 of the scanner 8 and used for capturing graphics, images or texts of the document.

The rotating wheel 20 is pivotally arranged on a side wall of the base 80 of the scanner 8 .

The first roller 30 is pivotally disposed on one side wall of the base 80 , and the first roller 30 and the running wheel 20 are respectively located on two sides of the same wall.

The driving roller 40 is pivotally disposed on a side wall of the base 80 , and the driving roller 40 is located below the first roller 30 .

One end of the conveyor belt 50 fits on the runner 20 , and the other end fits on the first roller 30 and the driving roller 40 , so that the runner 20 , the first roller 30 and the driving roller 40 rotate simultaneously by means of the conveyor belt 50 .

Wherein, the conveyor belt 50 described above can be a belt or a wire. Moreover, the tension of the conveyor belt 50 can also be adjusted according to the actual design requirements without additional tension adjustment springs.

In addition, the conveyor belt 50 is connected to the image capture unit 10 with at least one fixed end, wherein the fixed end is a screw, so as to be screwed into a screw hole corresponding to the image capture unit 10, so that the image capture unit 10 follows the conveyor belt. 50 rotation and displacement.

The second roller 60 is pivotally arranged on a side wall surface in the base 80, and is located between the runner 20 and the driving roller 40, and is used to support the conveyor belt between the runner 20 and the driving roller 40, so that the runner 20, the second roller The conveyor belt 50 between the first roller 30 rises to be parallel to the conveyor belt between the runner 20 and the second roller 60 .

According to the structure disclosed in the present invention, it also includes a power assembly, which is arranged on the base 80. The power output by the power assembly can drive the driving roller 40 to rotate, and drive the conveyor belt 50 to rotate by means of the driving roller 40, wherein the power assembly can be a stepping motor or DC motors.

Furthermore, the size of the first roller 30 described above is smaller than the size of the runner 20 and also smaller than the size of the driving roller 40 , while the size of the second roller 60 is smaller than the size of the runner 20 and also smaller than the size of the driving roller 40 .

Please continue to refer to FIG. 4 and FIG. 5 , when the power assembly drives the driving roller 40 to rotate, the driving roller 40 drives the conveyor belt 50 to rotate, and at the same time, the conveyor belt 50 drives the image capture assembly 10 to reciprocate between the runner 20 and the first roller 30 displacement, so that the image capture component 10 can capture graphics, images or text of the document. Since the size of the first roller 30 is smaller than the size of the rotating wheel 20 and the driving roller 40, the image capture assembly 10 can be displaced to the top of the first roller 30 without hitting the first roller 30 or the driving roller 40, thereby enabling the image capture The origin of displacement of the assembly 10 is taken to be closer to the periphery of the base 80 .

Furthermore, the image capture component 10 can also be displaced to a position close to the periphery of the base 80 , so that there is no gap between the image capture component 10 and the base 80 and the volume of the base 80 can be reduced.

The structure disclosed in the present invention changes the path of the conveyor belt 50 by setting the first roller 30 and the second roller 60, and solves the problem that the image capture device of the existing transmission mechanism cannot be too close to the driving wheel, thereby reducing image capture The distance between the component 10 and the base 80 saves space, and the image capture component 10 will not hit the first roller 30 or the driving roller 40, so as to achieve the purpose of reducing the volume of the base 80 of the scanner 8, which not only makes the scanner The space occupied by the scanner 8 becomes smaller, while improving the convenience of use and portability, and it is convenient for the user to configure the space. In addition, it can also make the assembly of the scanner 8 easier, and can reduce the assembly process and shorten the manufacturing time, thereby achieving The purpose of reducing manufacturing costs.

Although the technical content of the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any equivalent changes and modifications made by any person familiar with the art without departing from the spirit of the present invention should be It falls within the scope of the present invention, so the protection scope of the present invention should be defined by the appended claims of the application.

Claims (8)

1. A transmission device of a scanner, which drives an image capture component to displace, the device comprising: a wheel; a first roller; a driving roller, located below the first roller; a conveyor belt, one end fits on the runner, the other end fits on the first roller and the driving roller, the drive roller drives the conveyor belt in rotation; and A second roller, pivotally arranged between the runner and the driving roller, is used to support the conveyor belt between the runner and the driving roller, so that the conveyor belt between the runner, the second roller and the The conveyor belt between the runner and the first roller is parallel to each other; Wherein, the size of the first roller is smaller than the size of the driving roller, and the size of the first roller is smaller than the size of the running wheel. 2. The transmission device of the scanner as claimed in claim 1, wherein the driving roller is connected to a power assembly for driving the driving roller to rotate. 3. The transmission device of the scanner as claimed in claim 1, wherein the conveyor belt drives the image capture unit to move back and forth between the rotating wheel and the first roller. 4. The transmission device of the scanner as claimed in claim 1, wherein the conveyor belt is connected with the image capture unit through at least one fixed end. 5. The transmission device of the scanner as claimed in claim 4, wherein the fixed end is a screw, and is screwed into a screw hole of the image capture component. 6. The transmission device of the scanner as claimed in claim 1, wherein the conveyor belt is a belt. 7. The transmission device of the scanner as claimed in claim 1, wherein the conveyor belt is a steel cable. 8. The transmission device of the scanner as claimed in claim 7, wherein the conveyor belt can be adjusted in tension.

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