JPH0792575A - Optical device - Google Patents

Abstract

PURPOSE:To very easily perform the unpack and set-up work without using a tool, etc., by allowing the operation from the outside of a cabinet for fixing and unfixing the optical system to and from the cabinet to be carried out. CONSTITUTION:At the time of performing the unpack and set-up work for an image reading means, a setting piece 26 set in an operation opening 22 in an optical system fixing mechanism part 21 is pulled out, after the side cover is opened. An operation piece part 24b in an operation lever 24 is made thus possible to shift to the wide part 22b of the operation opening 22 and the operation piece part 24b is shifted by an operator. Next, the operation piece part 24b is pushed toward the inside of the cabinet 20 by the operator. In this way, a key-shaped part 24a of the operation lever 24 is disengaged from a slot 23. Further, the key-shaped part 24a side is lifted around the operation piece part 24b by the operator. As a result, the key-shaped part 24a is disengaged from the slot 23. In this state, a cabinet 20 is pulled out by drawing the operation piece part 24b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical device suitable for application to an electronic copying machine or the like.

[0002]

2. Description of the Related Art An electronic copying machine or the like is provided with an optical system composed of a first carriage and a second carriage which reciprocally move on a rail in an optical unit and read a document.

In such an optical system, the first carriage and the second carriage must be fixed to the optical unit in order to protect them from vibration and shock during packaging for transportation.

As such a fixing means, the first carriage is fixed by screwing the packaging bracket hooked on the first carriage into the base of the optical unit with one screw, and the second carriage is the packaging screw. It is known that the optical unit is fixed to the paper discharge side.

[0005]

However, in the case of the above-mentioned fixing means, the first carriage cannot be moved unless the glass plate as the document table is removed at the time of unpacking setup, and the first carriage cannot be moved. Since both the carriage and the second carriage are fixed with screws, there is a problem that unpacking setup work becomes complicated because tools such as a screwdriver are required.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an optical device having an improved structure and capable of performing unpacking setup work extremely simply without using a tool or the like.

[0007]

According to a first aspect of the present invention, in an optical device in which an optical system is movably provided in a housing, the optical system is fixed and released from the housing by an operation from outside the housing. The optical system fixing mechanism section capable of performing the above is provided.

An optical device according to a second aspect is an optical device in which an optical system is movably provided in a housing, and a narrow portion and a wide portion provided at an end face of the housing with a space substantially equal to the width of the optical system are communicated with each other. A pair of operation holes, a pair of elongated holes provided in a support member that supports the optical system in the housing along the moving direction of the optical system and at a distance substantially equal to the pair of operation holes, and the optical system A pair of operation levers that engage with the operation hole and the elongated hole along the moving direction of the optical system and fix the optical system to the housing in a sandwiched state; and the operation levers that are inserted into and removed from the operation holes, respectively. An optical system fixing mechanism section including a mounting piece that is immovable or displaceable with respect to the operation hole is provided.

According to a third aspect of the present invention, in the optical device in which the optical system is movably provided in the housing, a narrow portion and a wide portion, which are provided at an end surface of the housing with an interval substantially equal to the width of the optical system, communicate with each other. A pair of operation holes, a pair of elongated holes provided in a support member that supports the optical system in the housing along the moving direction of the optical system and at a distance substantially equal to the pair of operation holes, and the optical system A hook-shaped portion engaged with an elongated hole in the housing for fixing the optical system to the casing while sandwiching the optical system by sandwiching the operating hole along the moving direction of And an operating lever integrally formed with an operating piece portion having a locking portion that engages with the narrow portion of the operating hole, and each operating lever is inserted into and removed from each operating hole. And a mounting piece that is immovable or displaceable.

According to a fourth aspect of the present invention, in the optical device in which the optical system is movably provided in the housing, the operation piece portion of the operation lever is widened by extracting the attachment piece attached to the operation hole. The operation piece portion is pushed inward into the housing, the engagement with the hook-shaped portion is released, and the hook-shaped portion side is lifted by using the operation piece portion as a fulcrum. Is provided with an optical system fixing mechanism section for releasing the fixed state of the casing by releasing the engagement with the elongated hole and pulling out the operation piece portion to the outside of the casing in this state.

[0011]

According to the optical device of the present invention, in the optical device in which the optical system is movably provided in the housing, the optical system provided in the housing is fixed and fixed to the housing by an operation from the outer surface of the housing. Since the releasable optical system fixing mechanism is provided, the unpacking setup work of the optical system can be performed very simply without using a tool or the like on the outer surface of the housing.

According to the optical device of the second aspect, the optical system can be fixed to the housing by sandwiching the optical system by a pair of operating levers in the optical system fixing mechanism, and the mounting piece can be inserted into each of the operating holes. Since the operation lever can be made immovable or displaceable by detaching, fixing of the optical system and unpacking setup work can be executed very simply by operating the mounting piece and the operation lever.

According to another aspect of the optical device of the present invention, the operating lever is provided with a hook-shaped portion that engages with the elongated hole in the housing, and the operating hole projects from the operating hole to the outside of the housing and narrows the operating hole. Since it is integrally configured with the operation piece part having the locking part that engages with the part, fixing of the optical system and unpacking setup work can be performed very simply while simplifying the configuration of the optical system fixing mechanism part. .

According to the optical device of the fourth aspect, the operation piece portion of the operation lever can be displaced to the wide portion of the operation hole by removing the attachment piece attached to the operation hole in the optical system fixing mechanism portion. Then, the operation piece is pushed inward into the housing, and the engagement with the hook-shaped portion is released here, and the hook-shaped portion side is lifted by using the operation piece as a fulcrum to move to the long hole of the hook-shaped portion. Since the engagement state of the optical system is released and the operation piece is pulled out to the outside of the housing in this state, the fixing state of the optical system with respect to the housing is released. It's easy for anyone to do from outside the body.

[0015]

EXAMPLES Examples of the present invention will be described in detail below.

The image forming apparatus 1 shown in FIG.
An image reading unit 31 as an optical device for reading a document O on a document table (transparent glass plate) 30 provided in A and forming a latent image on the peripheral surface of the photosensitive drum 52 of the image forming unit 33,
An image forming unit 33 for forming an image on a sheet P as an image forming medium is provided.

Image reading means 31 as the optical device
Is a first carriage 35 as an optical system including a light source 40, a reflecting mirror 41, and a mirror 42, a second carriage 36 as an optical system including mirrors 43 and 44, a lens 45, and mirrors 46 and 47, And 48.

As shown in FIG. 2, the first carriage 35, the second carriage 36, and the mirrors 46 and 47 are arranged in the housing 20, and the first carriage 3 is also provided.
The optical system including the fifth and second carriages 36 is driven in the direction of the arrow shown in FIG. 1 by a driving unit (not shown) to optically scan the document 0 on the document table 30.

As shown in FIGS. 2 and 3, the image reading means 31 is an optical system for fixing the first carriage 35 and the second carriage 36 to one end of the housing 20 in a sandwiched state. The fixing mechanism 21 is provided.

As shown in FIGS. 2 to 4, this optical system fixing mechanism portion 21 has a width of an optical system including the first carriage 35 and the second carriage 36 on one end face plate 20a of the housing 20. As a support member for movably supporting the optical system in the housing 20, a pair of operation holes 22 communicating with a narrow portion 22a and a wide portion 22b provided at intervals substantially equal to (width in the depth direction of the paper surface). A pair of oblong holes 23 provided in the rail 25 along the moving direction of the optical system and at substantially the same intervals as the pair of operating holes 22, and the operating holes 22 and 23 along the moving direction of the optical system. A pair of operation levers 24 that are engaged with each other to fix the optical system to the housing 20 in a sandwiched state, and a pair of operation levers that are inserted into and removed from the operation holes 22 and that do not move the operation levers 24 with respect to the operation holes 22 Or set to the displaceable state And a mounting piece 26 having a bent elastic in shape.

The operation lever 24 has a hook-shaped portion 24a that engages with an elongated hole 23 in the housing 20, and the outside of the casing 20 from the operation hole 22, that is, the side cover 1 of the apparatus body 1A.
The narrow portion 22 of the operation hole 22 that projects outward from B
It is integrally configured with an operation piece portion 24b having a locking portion 24c that engages with a.

As shown in FIG. 1, the image forming means 33 includes a photosensitive drum 52 as an image carrier and a developing device 5.
3, fixing device 54, charging device 55, transfer device 56, static eliminator 5
7, a cleaner 58, an erasing array 59 and the like.

The image forming means 33 includes a manual feed guide 65, a paper feed tray 61 containing the paper P, a pickup roller 66 for taking out the paper P from the paper feed tray 61,
Paper feed roller 67, registration roller 68, paper discharge roller 6
9, a paper discharge tray 64 and the like are provided.

Next, the operation of the image forming apparatus 1 will be mainly performed when unpacking setup work is performed by the optical system fixing mechanism portion 21 of the image reading means 31, and also with reference to FIGS. 4 to 9. explain.

The image reading means 31 is fixed to the housing 20 by the optical system fixing mechanism portion 21 in a state of being abutted against the end face plate 20a side as shown in FIG. 2 at the stage of shipment from the manufacturing factory. Therefore, it is assumed that the first carriage 35 and the second carriage 46 are not detached or moved even if they are subjected to vibration or impact.

When performing the unpacking setup work of the image reading means 31 as described above, after opening the side cover 1B, the optical system fixing mechanism portion 2 as shown in FIGS.
The mounting piece 26 mounted in the operation hole 22 in 1 is pulled out. As a result, the operation piece portion 24b of the operation lever 24 can be displaced to the wide portion 22b of the operation hole 22,
The operator displaces the operation piece portion 24b in the direction of the arrow a shown in FIG. 6, and moves the operation piece portion 24b to the wide portion 22b of the operation hole 22.
To face.

Next, the operator operates the operation piece portion 24b.
Is pushed in the direction of the arrow b shown in FIG. 7 (inward of the housing 20). As a result, the engagement of the hook-shaped portion 24a of the operation lever 24 with the elongated hole 23 is released. Further, the operator uses the operation piece portion 24b as a fulcrum and the hook-shaped portion 24a.
The side is lifted in the direction of arrow c shown in FIG. This allows
The engagement of the hook-shaped portion 24a with the elongated hole 23 is released.

In this state, the operation piece portion 24a is pulled in the direction of arrow d as shown in FIG. 9 and pulled out to the outside of the housing 20.

By carrying out such a work for the pair of mounting pieces 26 and the operating lever 24, the fixing state of the optical system including the first carriage 35 and the second carriage 36 with respect to the housing 20 can be determined. It can be released without using a tool and without removing the platen 30, and the unpacking setup work of the optical system can be easily performed by anyone from the outside of the housing 20 in a short time.

The present invention can be variously modified within the scope of the gist other than the above-mentioned embodiment.

[0031]

According to the present invention described above, the following effects are obtained.

According to the first aspect of the present invention, it is possible to provide an optical device capable of extremely simply performing unpacking setup work of the optical system without using a tool or the like on the outer surface of the housing.

According to the second aspect of the present invention, it is possible to provide an optical device in which fixing of the optical system and unpacking setup work can be executed very simply by operating the mounting piece and the operating lever.

According to the third aspect of the present invention, it is possible to provide an optical device capable of extremely easily performing the fixing and unpacking setup work of the optical system while simplifying the configuration of the optical system fixing mechanism section. .

According to the fourth aspect of the present invention, it is possible to provide an optical device in which the unpacking setup work of the optical system can be easily performed by anyone from the outside of the housing in a short time.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an apparatus according to an embodiment of the present invention.

FIG. 2 is an enlarged view showing an optical system provided with an optical system fixing mechanism portion of an apparatus according to an embodiment of the present invention.

FIG. 3 is a perspective view showing an optical system provided with an optical system fixing mechanism portion of an apparatus according to an embodiment of the present invention.

FIG. 4 is an explanatory view showing a releasing operation of the optical system fixing mechanism portion of the embodiment apparatus of the present invention.

FIG. 5 is an explanatory diagram showing a releasing operation of the optical system fixing mechanism portion of the embodiment apparatus of the present invention.

FIG. 6 is an explanatory view showing a releasing operation of the optical system fixing mechanism portion of the embodiment apparatus of the present invention.

FIG. 7 is an explanatory view showing a releasing operation of the optical system fixing mechanism portion of the embodiment apparatus of the present invention.

FIG. 8 is an explanatory view showing a releasing operation of the optical system fixing mechanism portion of the embodiment apparatus of the present invention.

FIG. 9 is an explanatory view showing a releasing operation of the optical system fixing mechanism portion of the apparatus according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Image forming apparatus 20 Housing 21 Optical system fixing mechanism section 22 Operation hole 23 Oblong hole 24 Operation lever 25 Rail 26 Mounting piece 31 Image reading means

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication G03G 21/00

Claims (4)

[Claims] 1. An optical device in which an optical system is movably provided in a housing, wherein an optical system fixing mechanism portion capable of fixing and releasing the fixation of the optical system to the housing by an operation from outside the housing is provided. Characterized optical device. 2. An optical device in which an optical system is movably provided in a housing, and a pair of operation holes for communicating a narrow portion and a wide portion provided at an end face of the housing with a width substantially equal to the width of the optical system. A pair of elongated holes provided in a support member that supports the optical system in a housing along the moving direction of the optical system and at substantially the same intervals as the pair of operating holes, and an operating hole along the moving direction of the optical system A pair of operation levers that engage with the elongated holes and fix the optical system to the housing while sandwiching the optical system, and a pair of operation levers that are inserted into and removed from the operation holes and that are not moved with respect to the operation holes. An optical device comprising: an optical system fixing mechanism section including a mounting piece that can be displaced. 3. An optical device in which an optical system is movably provided in a housing, and a pair of operation holes for communicating a narrow portion and a wide portion provided at an end surface of the housing with a width substantially equal to the width of the optical system. A pair of elongated holes provided in a support member that supports the optical system in a housing along the moving direction of the optical system and at substantially the same intervals as the pair of operating holes, and an operating hole along the moving direction of the optical system A hook-shaped portion that engages with an elongated hole in the housing that engages with the elongated hole to fix the optical system to the housing while sandwiching the optical system, and the operating hole that projects from the operating hole to the outside of the housing Of the operation lever having a locking portion that engages with the narrow portion of the operation lever, and a state in which the operation lever is inserted into and removed from the operation hole, and the operation lever is immovable or displaceable with respect to the operation hole. An optical device comprising: 4. An optical device in which an optical system is movably provided in a housing, whereby an operation piece portion of the operation lever can be displaced to a wide portion of the operation hole by removing an attachment piece attached to the operation hole, Pushing the operating piece into the inside of the housing releases the engagement with the hook-shaped part, and lifts the hook-shaped part side with the operating piece as a fulcrum to engage the hook-shaped part with the elongated hole. And an optical system fixing mechanism section for releasing the fixed state of the casing by pulling out the operation piece portion to the outside of the casing in this state.