CN2359744Y

CN2359744Y - Improved scanner driving mechanism

Info

Publication number: CN2359744Y
Application number: CN 98206385
Authority: CN
Inventors: 林相铭
Original assignee: XINHONG SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: Foxlink Image Technology Co Ltd
Priority date: 1998-07-02
Filing date: 1998-07-02
Publication date: 2000-01-19
Anticipated expiration: 2008-07-02

Abstract

The utility model relates to an improved driving mechanism of a scanner. Mainly, an upper cover of a scanner is supported flatly by utilizing a glass transparent plate of the scanner for strengthening the bearing capacity of the entire driving device, and the situation that a driving mechanism of the existing scanner makes scanning images affected because of the deformation of a casing caused by an environmental temperature humidity effect is avoided. Simultaneously, the lower end of a scanning head for pushing a slide rail is provided with an elastic sheet for reducing noise and dithering caused by a driven wheel and tooth gaps between toothed racks, so that the consistent contact of the scanning head, the slide rail and the upper cover in the scanning process can be ensured, and the torque horizontal vibration generated on the existing scanning driving mechanism can be improved. The utility model can be widely used in a driving mechanism of a scanner.

Description

A kind of improved scanner gear train

The utility model relates to a kind of scanner gear train, particularly a kind of scanning light path and image horizontal jitter consistent scanner gear train that tends towards stability that makes.

Office automation at present is luxuriant in the society of informatization to be one trend, except with computer back and forth as the processing of great mass of data and storing, scanner also improves the efficient of input data effectively at the input media as data such as file, form and images.General scanner, consist predominantly of elements such as light source, transparency glass plate, scanner head, gear train, electronic circuit, power supply and frame, the structural design of its each element and configuration scenario or different, but scanner head must light path must keep fixing, bad situation generations such as distortion are arranged with the data of avoiding input scanner, especially for the machine of high-res scanner or CIS scanner, this requires more very.

The synoptic diagram of existing scanner gear train as shown in Figure 1, how with belt or cable wire as the media that drives dynamic component, in scanning process because of the intermittent walking of type body weight heart factor own and step motor, and generation torsional moment horizontal vibration, phenomenons such as the image of feasible scanning is affected, and generation tomography and folded look bad; And because of the body of gear train own is to be set up in base, under long-term the use, easily contract, make the image of scanning be subjected to the influence that light path changes because of the warm and humid effect of environment causes in its casing deformation, and bad phenomenon such as generation image fog.

This reality has novel fundamental purpose, promptly be to provide one to utilize the smooth rerum natura advantage of glass to support flat loam cake, and the slide rail that will carry scanner head weight is fixed in loam cake, utilize the glass bearing capacity to be better than the principle of plastic cement bearing capacity, strengthen the bearing capacity of whole gear train, avoid existing scanner gear train, contract because of the warm and humid effect of environment causes in the casing deformation, make scan-image be subjected to the influence that light path changes, and produce the image fog bad phenomenon.

Secondary objective of the present utility model, promptly be to provide a kind of gear train of scanner, make it can effectively improve existing scanner gear train because of body center of gravity factor own and the intermittent walking of step motor, and generation torsional moment horizontal vibration, make the image of scanning be affected, produce the folded look bad phenomenon of tomography.

Below in conjunction with Figure of description the technical solution of the utility model and embodiment are described.

Description of drawings:

Fig. 1 is the synoptic diagram of existing scanner gear train;

Fig. 2 is a synoptic diagram of the present utility model;

Fig. 3 is a cut-open view of the present utility model;

Fig. 4 is a shell fragment position view in the utility model.

The utility model consists predominantly of as shown in Figure 2: slide rail 20, scanner head 21, transmission shaft 23, glass transparent plate 201 and loam cake 22.Wherein utilize scanner glass transparent plate 201 to support simple scan device loam cake 22, and this loam cake 22 between walking back and forth the two ends in path, scanning have tooth bar 202; Mainly contain optical scanning system and power source in the scanner head 21; Transmission shaft 23 is across being located at scanner head 21, and be provided with engaged wheel 203 in two ends, the tooth pitch of the tooth pitch of engaged wheel 203 and tooth bar 202 can match, engaged wheel 203 is controlled by scanner head 21 internally-powered sources, use and drive scanner head 21 in slide rail 20 and tooth bar 202 intercropping straight reciprocating motions, because the engaged wheel 203 at transmission shaft 23 two ends is the locking-type structure, make engaged wheel 203 to start or stop according to the information synchronization of power source, or engaged wheel 203 can be designed to the friction wheel of an anodontia distance, relatively tooth bar 202 is also replaced by a track, and so friction wheel and this track also have the function of above-mentioned engaged wheel 203 and tooth bar 202; And slide rail 20 is the member of main carrying scanner head 21 weight.

Fig. 3 is a cut-open view of the present utility model, a pulley 204 is established in the lower end of scanner head 21 among the figure, make scanner head 21 can art skatings on slide rail 20 and do not derail, guarantee that scanner head 21 carries out the rectilinear scanning campaign in scanning process, slide rail 20 utilizes fixed mount 205 to be fixed in loam cake 22, make between slide rail 20 and the loam cake 22 apart from being certain value, utilize glass transparent plate 201 bearing capacities to be better than the principle of plastic cement bearing capacity, strengthen the bearing capacity of trimming gear train, avoid existing scanner gear train, contract because of the warm and humid effect of environment causes in the casing deformation, make scan-image be subjected to the influence that light path changes, and produce the image fog bad phenomenon.

Simultaneously, for reducing engaged

wheel

203 and 202 caused noises of backlash of tooth bar and shake, establish a shell fragment 200 in scanner head 21 lower ends, as shown in Figure 4, utilize the pre-power design of this spring, withstand slide rail 20, can guarantee the contact that in scanning process, keeps consistency of scanner head 21, slide rail 20 and loam cake 22, be in the whole scanning process, the scanning light path is kept fixing, significantly improve existing scanning gear train because of generation torsional moment horizontal vibration, make the image of scanning be affected, produce tomography and fold look bad.

Advantage of the present utility model: the above-mentioned scanner driving mechanism that provides, hold because it utilizes glass The power of carrying is better than the principle of plastic cement bearing capacity, strengthens the bearing capacity of whole transmission mechanism, and utilizes spring pre-The contact that probe, slide rail and loam cake keep consistency is guaranteed in the power design in scanning process, real For having novelty, creativeness, can be widely used in the scanner driving mechanism.

Claims

1, a kind of improved scanner gear train consists predominantly of light source, glass transparent plate, scanner head, gear train, it is characterized in that:

Utilize scanner glass transparent plate to support simple scan device loam cake, and should on be placed on scanning and walk back and forth and between the two ends in path tooth bar is arranged;

Mainly contain optical scanning system and power source in the scanner head;

Transmission shaft is across being located at scanner head, and is provided with engaged wheel in two ends, and engaged wheel is controlled by scanner head internally-powered source, uses to drive scanner head in slide rail and tooth bar intercropping straight reciprocating motion;

Slide rail is the member of main carrying scanner head weight, utilizes fixed mount to be fixed in loam cake, makes between this slide rail and the loam cake apart from being certain value;

Utilize glass transparent plate bearing capacity to be better than the principle of plastic cement bearing capacity, strengthen the bearing capacity of whole gear train.

2, a kind of improved scanner gear train as claimed in claim 1, it is characterized in that: the tooth pitch of engaged wheel and rack tooth are apart from matching.

3, a kind of improved scanner gear train as claimed in claim 1, it is characterized in that: the engaged wheel at transmission shaft two ends is the locking-type structure.

4, a kind of improved scanner gear train as claimed in claim 1, it is characterized in that: a pulley is established in the lower end of scanner head, make scanner head can art skating on slide rail and do not derail, guarantee that scanner head carries out the rectilinear scanning campaign in scanning process.

5, a kind of improved scanner gear train as claimed in claim 1, it is characterized in that: a shell fragment is established in the lower end of scanner head, utilize the design of the pre-power of this spring, withstand slide rail, can guarantee the contact that in scanning process, keeps consistency of scanner head, slide rail and loam cake.

6, a kind of improved scanner gear train as claimed in claim 1, it is characterized in that: engaged wheel can be designed to the friction wheel of an anodontia distance, and relatively tooth bar is also replaced by a track.