JPS6299742A - Wire driven optical system device - Google Patents

Abstract

PURPOSE:To facilitate adjustment at the time of assembling and after assembling very easily by providing a housing box positioning each optical system. CONSTITUTION:At the time of assembling, the first and second mobile frames 3A, 4A are mounted on rails 15, 15a, and a housing box 25 is fitted to them and a pin 26 is inserted in a pin hole 27. Then, wires 14, 14a are spread, and wire fixing ends 9, 9a are fixed respectively to wires 14, 14a, and then, the balance of tension of wires 14, 14a is adjusted by operating an adjusting screw 18. The first and second mobile frames are housed beforehand in the housing box 25 at the time of assembling, and specified position of wires 14, 14a is fixed to wire fixing ends 9, 9a of the first mobile frame, and these are mounted on rails 15, 15a.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application This invention relates to an optical system device mainly used in copying machines and driven by a wire.

(B) Prior Art In this type of optical system device, a first optical system having a fixed wire end and a second optical system having a movable pulley are each driven by a wire stretched through the fixed wire end and the movable pulley. (For example, see Japanese Patent Laid-Open No. 58-95762).

(c) Problems to be Solved by the Invention In such an optical system device, the first and second optical systems are always held parallel to each other and perpendicular to the direction of movement, and are kept in a predetermined distance relationship. It is important to maintain and drive the image at a constant level, so that the focus and magnification of the image can be maintained well, and an image without distortion can be obtained. Therefore, conventionally, the positional relationship between the first and second optical systems was determined by positioning each optical system and the main body fixing part using a special assembly jig when assembling the optical system device, and then positioning each optical system with the main body fixing part. It is set by adjusting the fixed position of the wire and the tension of each wire.

Therefore, if the position of the optical system becomes incorrect due to impact during transportation of the assembled optical system device or stretching of the wire during use, readjustment will not be easy if the adjustment jig is not prepared. It was very time consuming and time consuming.

This invention was made in consideration of such circumstances, and the shock and vibration during transportation can cause damage to the vehicle! To provide a wire-driven optical system device that does not shift the I/L skewer and can be adjusted to the M skewer in a short time when the positional relationship of the optical system needs to be readjusted after assembly. be.

(D) Means for Solving Problems This invention provides a first movable frame having a wire fixed end and a first optical system, and a second movable frame having a movable pulley and a second optical system.
In a double-sided drive optical system device in which the movable frame is driven by a wire stretched through the fixed end of each wire and a movable pulley, the first movable frame and the second movable frame are attached and detached with a predetermined distance from each other. This is a wire-driven optical system device characterized by comprising a storage box that can be fitted and stored, and a positioning member that positions the storage box at a predetermined position of a main body fixing part.

The storage box is manufactured by integrally molding the material mainly from 1a4111.

(E) Function Since a jig for positioning each optical system, that is, a storage box is provided, when adjusting the position of each optical system, move the storage box to the first moving frame and the second moving frame. After fitting and fixing the storage box to a predetermined position on the main body fixing part using the positioning member, the fixing position of the optical system and the wire and the wire tension are adjusted.

During transportation, if the storage box is carried while being fitted into the first and second moving frames, it is possible to prevent the positional relationship from being distorted due to shock or vibration. When in use, remove the storage box.

(C) Examples The present invention will now be described in detail based on examples shown in the drawings. Note that this invention is not limited to this.

FIG. 1 is an explanatory diagram mainly showing the arrangement of the optical system of a copying machine equipped with a wire-driven optical system device according to the present invention, (1)
is a document, (2 is a glass plate on which the document is placed, (3) is a first optical system consisting of an exposure lamp (3a), a reflector (3TL), and a mirror (3C), (4) is a mirror (4a) ( 4b), (5) is a lens, (6) is a fixed mirror, (sword is a photosensitive drum, and (8) is a copying machine case.

In such a configuration, the original is exposed to the illumination light of the exposure lamp (3a), and the light is transmitted to the mirror (3c) (
4a) (4b), imaging lens (5), mirror (6
), and reaches the photoreceptor to form a g-image of the original image. The first optical system (3) and the second optical system (4) move in the direction of arrow (A) at a speed ratio of 2:1 to expose and scan the entire document (1).

FIG. 2 is a perspective view mainly showing the driving device of the wire-driven optical system device according to the present invention, (3A) is a first moving frame equipped with a first optical system, and (4A) is a perspective view showing a first moving frame equipped with a second optical system. (9H9a) is a wire fixed end provided on both sides of the first moving frame; (K)) (10a) is a movable pulley provided on both sides of the second moving frame; Hagi 17 (llb
) and a drive pulley connected to the shaft (llc) and driven by a drive source (not shown), (12a) and (131 (13a) are fixed pulleys, (14) (14
a) is a wire, (151 (15a) is a rail that drives the first and second moving frames (3A) (4A> in the moving direction, Q51 (16a) is a bin ff?) (17a) is fixed by a wire () A spring that applies a predetermined tension to 14a), the screw side of which is attached to the fa part of the wire (14),
The nut side is fixed to the main body and is an adjustment screw part for adjusting the tension of the wire (1), and e is a stopper for fixing the end of the wire (14a) to the main body.

FIG. 3 is an explanatory view showing how the wire 041 (14a) shown in FIG. ■ (20a) and &ll (21a), the movable pulley (10a) and the fixed pulley surface (1
2a) by a half circle each, and then the wrapped part @(
22a), the drive pulley curve (11a) has the first and second
It is wound by a length corresponding to the moving distance of the moving frame.

Furthermore, the wrapping is shown in sections (c) (23a) and (20a).
At the fixed pulley (131 (13a)) and the movable pulley (A) l (10a), the terminal ends of the hooks each wrapped around the fixed pulley (131 (13a) and the movable pulley (A) l (10a) by a semicircular length are locked to the springs (5) (16a). At 24 (24a), the wire fixed end (
91 (9a) is fixed, wires G4) and (14a
) is adjusted by adjusting screw part □□□.

FIG. 4 is an explanatory diagram of main parts of an embodiment of the present invention, and FIG.
In the figure, (f) is a storage box in which the first movable frame (3A) J3 and the second movable frame (4Δ) are detachably stored with a predetermined distance between them. 2 indicates the positioning bin provided on the storage box, and 2 indicates the bin provided on the body fixing part, that is, the rail 051 (15a).
(C) is a buffer material provided on the top of the storage box (C). The installation position of the bottle hole G and the distance D between the first moving frame (3A) and the second moving frame (4A) (see FIG. 4(b)) are determined by the distance D between the first and second moving frames (3A ) has a storage box (c) of 1 iN
The settings are made so that when the original image is scanned, the optical system is well focused and a document image of a predetermined magnification is formed on the photoreceptor drum (see FIG. 1).

Therefore, in assembling the optical system shown in FIG.
First, as shown in Fig. 2, the first and second moving frames (3A
) (4A) are mounted on the rails (15) (15a), the storage box (c) is fitted onto them, and the bottle (c) is fitted into the bottle hole opening. Next, while maintaining this state, move the wire 04 as shown in FIGS. 2 and 3.
1 (14a) and fixed the wire fixed ends (9) (9a) to the wire G4 (14a) respectively, adjust the tension balance on the wire side (14a) by operating the adjustment screw part. do.

Furthermore, when assembling the optical system device, the first and second movable frames are stored in the storage box (c) in advance, and the wire fixed ends (9) (9a) of the first movable frame are placed at predetermined positions on the wire side (14a). are fixed respectively, and this is attached to the rail 051 (15
If it is mounted on top of a), it is not only easy to position each movable frame, but also to distribute the length of the wire 04H14a), which simplifies the wire tensioning work.

In the optical system a assembled in this manner, the first and second moving frames (3A>(4A) are positioned in a predetermined positional relationship, so there is no need to adjust the focus or magnification after assembly.

Due to long-term use, the first and second moving frames (3A)
If the positional relationship of (4A) is out of order, use the storage box (to) to position it as in the above-mentioned assembly, and then adjust the positional relationship and wire (141(1)
What is necessary is to correct the tension in 4a).

Also, during transportation, as shown in Figure 4 (b+), with the storage box (c) fitted to the first and second moving frames (3A) (4A), the glass plate (c) is inserted through the cushioning material (c). ′
If they are fixed by pressing with 2J, they will be firmly fixed and their positional relationship will not be disturbed by shock or vibration during transportation.

(G) Effects of the Invention According to this invention, since the positioning of each moving optical system is performed by the storage box provided in the optical system device,
Not only is it easy to adjust focus and magnification during assembly, but
It is extremely easy to adjust the positional relationship caused by elongation of the wire during use after assembly.

Furthermore, since it is possible to transport the optical system device with each optical system fixed in the storage box, it is possible to prevent the positional relationship of each optical system from being misaligned due to shock or vibration during transport.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing the configuration of a copying machine equipped with a wire-driven optical system device according to the present invention, FIG. 2 is a perspective view showing a driving device for a wire-driven optical system device according to the present invention, and FIG. is an explanatory diagram showing the wire tensioning situation in Fig. 2, Fig. 4(a)
1 is an explanatory diagram showing the structure and operation of essential parts of an embodiment of the present invention. (3A)...First moving frame, (4A>...Second moving frame, Fixed...Storage box, (A)...Positioning bin,弼・
...Bottle hole. Figure 4(a) Figure 4(b)

Claims (1)

[Claims] 1. A first movable frame having a wire fixed end and equipped with a first optical system, and a second movable frame having a movable pulley and equipped with a second optical system, each having a fixed wire end. In a wire-driven optical system device driven by a wire stretched through an end and a movable pulley, a storage box in which a first moving frame and a second moving frame are removably fitted and housed with a predetermined distance from each other. and a positioning member for positioning the storage box at a predetermined position of the main body fixing part. 2. The wire-driven optical device according to claim 1, wherein the storage box is an integrally molded product made of resin. 3. The wire-driven optical system device according to claim 1, wherein the storage box is provided with a cushioning material on the outside.