JPH02218263A - Image sensor mount device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an image sensor mounting device, and more specifically, a device for mounting a line type image sensor in close contact with a reading roller of a facsimile machine in parallel with its axis. The present invention relates to an image sensor mounting device for mounting.

[Conventional technology]

Taking FIG. 3 as an example, when attaching the line type image sensor 2 to the reading roller 1 which is rotatably supported between the side plates of the case (not shown), conventionally the reading roller 1 is attached to both ends of the image sensor 2. rotation axis 1a of
A mounting bracket 3 having an abutting plate 3a that comes into contact with the spring and a locking pin 3b for locking the spring is installed, and a tension spring 5 is installed between the locking pin 3b and the spring locking claw 4 on the side plate of the case. By intervening and bringing the abutment plate 3a into contact with the co-rotating shaft 1a,
It is designed to provide high reading position accuracy. Further, the image sensor 2 is pressed against the reading roller 1 by a leaf spring 6 so as to be in close contact with the reading roller 1.

[Problem to be solved by the invention]

As mentioned above, in the conventional example, the tension springs 5 are arranged in two places on the left and right, and the leaf springs 6 are arranged in two places above, but according to this, the accuracy of the mounting position of each spring and the bending of the casing etc. Due to this subtle influence, the pressure applied to the reading roller 1 becomes non-uniform, and in extreme cases, skewing of the document or poor reading may occur.

[Means to solve the problem]

In order to solve the above problems, in the present invention, a line type image sensor is mounted parallel to the axis of the reading roller of a facsimile machine, etc., so as to be in close contact with the reading roller of a facsimile machine, etc., which is rotatably held between a pair of side plates of a housing. In this case, a mounting plate is provided at both ends of the image sensor, which has an abutment plate that is formed substantially perpendicular to the reading surface of the image sensor and comes into contact with the rotating shaft of the reading roller, and a locking pin for locking the spring. A metal fitting is provided, and the image sensor is brought into contact with the reading roller in an oblique state so that the locking pin is positioned within an imaginary horizontal plane that includes the rotation axis of the reading roller, and the spring fixing shaft provided on the side plate and the above-mentioned A spring for pressing the image sensor against the reading roller is provided between the locking pin and the spring along the imaginary horizontal plane.

[For production]

According to this configuration, only two springs are needed, one on the left and one on the left.
Therefore, highly accurate adjustment can be performed with simple work.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 and 2.

This mounting device includes mounting fittings 10 that are mounted on both ends of the image sensor 2. This mounting bracket 10 includes an abutting plate 11 that is formed to be substantially perpendicular to the reading surface of the image sensor 2 and comes into contact with the rotating shaft 1a of the reading roller 1, and a locking pin 12 for locking a spring. and is provided.

According to this invention, the image sensor 2 has the locking pin 12
is arranged so as to be in contact with the reading roller 1 in an inclined state (optimally at an inclination of 45 degrees) so that it is located in an imaginary horizontal plane that includes the rotation axis 1a of the reading roller 1.

On the other hand, a spring fixing shaft 16 is provided on the side plate 13 side of the housing so as to be located on the virtual horizontal plane, that is, on an extension line connecting the rotation shaft 1a and the locking pin 12.

A tension spring 17 is provided between the spring fixing shaft 16 and the locking pin 12 to draw the image sensor 2 toward the reading roller 1.
is interposed.

Therefore, according to this configuration, in the standard position where the spring fixed shaft 16 is located on the extension line connecting the rotating shaft 1a and the locking pin 12, the biasing force of the tension spring 17 is applied to the abutment plate 11 and the image sensor 2. It will be applied almost evenly to the reading surface.

In this case, the position of the spring fixing shaft 16 can be adjusted in an upward direction with respect to the virtual horizontal plane,
By moving the position of this spring fixing IN+16, it is possible to adjust the abutting force of the abutting plate 11 against the rotating shaft 1a and the pressing force of the image sensor 2 against the rotating shaft 1a. Furthermore, the mounting bracket 10 is provided with a holding shaft 15 that engages with a groove 14 formed in the side plate 13 of the housing to prevent the image sensor 2 from falling off and to maintain its inclination angle at a predetermined angle. ing.

〔Effect of the invention〕

As explained above, according to the present invention, the abutment force of the abutment plate against the rotational shaft of the reading roller and the pressing force of the image sensor against the rotational shaft are controlled by the two tension springs arranged on the left and right sides of the image sensor. is obtained. Therefore, the number of springs is reduced by two compared to the conventional one, the structure is simple, and the pressure on the rotating shaft can be easily adjusted.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment according to the present invention, FIG. 2 is a side view of the same embodiment, and FIG. 3 is a schematic perspective view of a conventional example. In the figure, 1 is a reading roller, 2 is an image sensor, 10 is a mounting bracket, 11 is an abutment plate, 12 is a locking pin, 13 is a side plate, 14 is a groove, 15 is a groove, 16 is a spring fixing shaft, and 17 is a It is a tension spring.

Claims (3)

[Claims] (1) In an image sensor mounting device that mounts a line-type image sensor in close contact parallel to the axis of a reading roller of a facsimile machine, etc., which is rotatably held between a pair of side plates of a housing, the above-mentioned image sensor A mounting bracket is provided at both ends of the image sensor, and includes an abutment plate that is formed to be substantially perpendicular to the reading surface of the image sensor and that comes into contact with the rotating shaft of the reading roller, and a locking pin for locking the spring. , the image sensor is brought into contact with the reading roller in a state in which the locking pin is tilted so as to be located within a virtual horizontal plane that includes the rotation axis of the reading roller, and a spring fixing shaft provided on the side plate is attached. and the locking pin, a spring is provided along the virtual horizontal plane to press the image sensor against the reading roller. (2) The image sensor mounting device according to claim 1, wherein the position of the spring fixing shaft is vertically adjustable with respect to the virtual horizontal plane. (3) The image sensor mounting device according to claim 1, wherein the mounting bracket is provided with a holding shaft for preventing falling off that engages with a groove formed in the side plate.