CN2419612Y

CN2419612Y - Scanner with improved lens moving machanism

Info

Publication number: CN2419612Y
Application number: CN00209603.XU
Authority: CN
Inventors: 宋昕
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-04-19
Filing date: 2000-04-19
Publication date: 2001-02-14
Anticipated expiration: 2010-04-19

Abstract

The utility model relates to a scanner with an improved lens moving mechanism, particularly to a driving mechanism of a reciprocating translation type scanning lens assembly. The moving mechanism at one side of an optical lens assembly is provided with a screw rod which is parallel with the moving direction of the optical lens assembly which is connected with the screw cap sheathed with a screw rod. Thus, the utility model can obtain higher moving speed, stable displacement and high precision, and can reduce the noise during the displacement; simultaneously, the utility model saves the working hour and reduces the assembly cost.

Description

The scanner of improvement lens displacing mechanism

The utility model relates to a kind of scanner of improveing lens displacing mechanism, especially the driving mechanism that refers to a kind of reciprocal parallel-moving type scanning lens assembly, wherein mainly having a screw rod that be arranged in parallel with its direction of motion and the nut on this screw rod constitutes, so that the walk rate of optical mirror slip assembly is faster, more steady, precision is higher, and the dry sound in when running is littler.

Press, present known shuttle scanner mirror head moving mechanism (seeing also shown in Figure 5), its all a side of optical lens assembly 51 be provided with one with its moving direction parallel guide rod 52, and establish an odontoid belt mechanism 53 that driven by motor 531 in this side, and make corresponding to the belt in the moving range 532 parallel with guide rod 52, make optical lens assembly 51 be fixed in a bit (point of fixity) on the belt 532 again, when motor 531 drove belt 532 rotations, optical lens assembly 51 can move with the linear displacement of point of fixity on the belt 532.

As above-mentioned known driving structure, it mainly itself is made by flexibility materials such as a kind of rubber and cotton threads because of odontoid belt 532, therefore when this belt when being supported by two gears 533, the belt 532 of (being in the stroke range of displacement) can produce pliability between two gears 533, and the factor of

optical lens assembly

51 and 52 friction force of guide rod, cause this and one easily produce vibrations when being configured in real-world operation, tremble and noise; Yet above-mentioned vibrations will directly influence the quality that scans out with the situation of trembling, and especially more be that its influence of product of high density image quality is bigger; The surcharge that then directly influences this product as for, noise is very huge.

The purpose of this utility model is to provide a kind of scanner of improveing lens displacing mechanism, and it is with rigid material driving fit contact, so the linear displacement of nut on screw rod, can make the displacement of optical lens assembly more steady, precision is higher.And then make and to obtain translational speed faster.

The purpose of this utility model is achieved in that a kind of scanner of improveing lens displacing mechanism, includes a body, cover plate and the control circuit board and optical lens assembly, the travel mechanism that are located in the body form; It is characterized in that: travel mechanism a side of optical lens assembly be provided with one with the parallel screw rod of optical lens assembly moving direction, and on screw rod, be arranged with nut, and optical lens assembly coupling nut.

Described fixed by nut is in optical lens assembly one side, again by a motor connecting screw rod.

Described screw rod is fixed.

Owing to adopt such scheme: can obtain translational speed, displacement faster steadily, precision is high, and then the noise can reduce displacement the time, simultaneously, saving man-hour, reduction assembly cost.

Structure of the present utility model, device and feature thereof can have more further understanding and understanding, lift some preferable possible embodiments now and cooperate graphic being described in detail as follows:

Fig. 1 is the whole schematic perspective view of reciprocating type scanner.

Fig. 2 is that travel mechanism one of the present utility model implements illustration.

Fig. 3 is that travel mechanism two of the present utility model implements illustration.

Fig. 4 is that travel mechanism three of the present utility model implements illustration.

Fig. 5 is that known scanner travel mechanism implements illustration.

See also Fig. 1 earlier to shown in Figure 4, the scanner of the utility model improvement lens displacing mechanism, scanner structure wherein include a body 11, cover plate 12 and are located at body interior control circuit board 2 and form with optical lens assembly 3, travel mechanism 4 etc.; It is characterized in that:

Travel mechanism 4 is provided with a screw rod 41 parallel with optical lens assembly 3 moving directions in a side of optical lens assembly 3, and on screw rod 41, be arranged with nut 42, and make the optical lens assembly 3 can be with the relative displacement of nut 42 on screw rod 41 to reach the purpose of translation.

Cooperate Fig. 2 and shown in Figure 3 again as above-mentioned structure, wherein make the structure of optical lens assembly displacement, in these embodiment, nut 42 is fixed on optical lens assembly 3 a side (for example be fixedly arranged on the camera lens assembly lug 31 in, or it is integrally formed) with lug, again by a motor 43 drive screws 41 rotation and force nut bar 42 on screw rod 41, to do relative displacement, advance to wear moving optical lens assembly 3 and produce and axially make horizontal displacement along screw rod 41.

See also shown in Figure 4 again, screw rod 41 wherein can be fixed on the body 11 and not rotate, nut 42 then is hubbed between two lugs 31 of optical lens assembly 3 one sides, directly drives nut 42 rotations by motor 43 again, makes optical lens assembly 3 produce the purpose of displacement to reach.

As mentioned above, be subjected to during 3 displacements of wherein optical lens assembly the stopper of screw rod group with simultaneously with the guiding effect, so this structure is comparatively simple and be easy to assembling; Again, part (the screw rod of the utility model in its transmission process, nut, the gear of motor and transmission etc.) all belong to the tight and firm joint of rigid material, so the linear speed of nut 42 on screw rod 41, as long as the speed of motor is constant, it is one and stablizes constant movement at the uniform velocity kenel, and can not produce the situation of trembling or shaking, the precision and the quality of scanning can significantly be promoted, and then the utility model can improve the actuating speed of 4 pairs of optical lens assemblies 3 of travel mechanism, reach the effect of quick scanning, also can lower the effect of even changeing noise during simultaneously toward its running, can increase its economic worth.

In sum, really to have speed fast, accurate for the scanner of the utility model improved lens moving machanism Spend the advantages such as height and low noise, and can improve scanning quality and the economic worth of this product.

Claims

1, a kind of scanner of improveing lens displacing mechanism includes a body, cover plate and the control circuit board and optical lens assembly, the travel mechanism that are located in the body form; It is characterized in that: travel mechanism a side of optical lens assembly be provided with one with the parallel screw rod of optical lens assembly moving direction, and on screw rod, be arranged with nut, and optical lens assembly coupling nut.

2, the scanner of improvement lens displacing mechanism as claimed in claim 1 is characterized in that: described fixed by nut is in optical lens assembly one side, again by a motor connecting screw rod.

3, the scanner of improvement lens displacing mechanism as claimed in claim 1 is characterized in that: described screw rod is fixed.