JP2001228561A - Holding structure of scanner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fix a scanning device in a direction vertical to a moving surface during its scanning during movement or transportation of an image reader by providing the above structure with a locking device for fixing the scanning device of the image reader to a bottom frame of a frame. SOLUTION: The scanning device 10 moved along the under surface of a platen 2 of the image reader 1 is provided with an engaging pawl member 31 so as to project at its under surface. The bottom frame 6 is provide with a locking member 35 in correspondence to the standby position of the scanning device 10, by which the locking device 30 is constituted. The engaging pawl member 31 is provided with a horizontal plate member directed toward the moving direction during scanning from a perpendicular member. The perpendicular member is detained into a groove disposed at the detaining member of the locking member 35, by which the horizontal plate member is so held as not to float and the scanning device 10 is fixed to the frame 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing means for a scanner device arranged in a scanning section of an image reading apparatus,
The present invention relates to a device that can fix the scanner device to a device frame when moving or transporting the image reading device.

[0002]

2. Description of the Related Art In an image reading apparatus provided in combination with an image forming apparatus such as a facsimile apparatus and a copying machine, a scanner apparatus is arranged along the lower surface of a platen on which an original is set, and the scanner apparatus is moved in the sub-scanning direction. It is provided as possible. The scanner device may be configured as one unit by combining a lamp as a light source, a plurality of mirrors, an imaging lens, and a photoelectric conversion unit such as a CCD. Then, by moving the scanner device along the document, information obtained by reading the image of the document is output as a digital signal. The digital signal transmitted from the scanner device is used as a transmission signal of a facsimile device, and in a copying machine, is transmitted to a writing unit in an image recording unit and used to write optical information on a photoconductor. ing.

[0003]

When transporting an image reading device provided with a scanner device configured as the one unit, a pin is provided at a lower portion of the scanner device, and the pin is attached to a frame of the image reading device. It is fixed by a lock member. However, the scanner device is fixed in the moving direction by the fixing by the lock member, but is not fixed in the vertical direction. And other problems.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fixing structure that can prevent the scanner device from moving in the moving direction and the vertical direction by using one fixing means.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a scanner holding structure. According to a first aspect of the present invention, there is provided a claw member provided at a lower portion of a movable scanner device, and a movable lock member provided so as to be engageable with the claw member. The scanner device is characterized in that by engaging the member, the scanner device is fixed so that the scanner device can be prevented from moving in the movement direction surface and the direction perpendicular to the movement direction. Further, according to the invention of claim 2, the claw member is formed of an L-shaped member including a horizontal portion and a hanging portion, and the hanging portion of the claw member is inserted into a U-shaped groove provided in the lock member. It is characterized by the following. And according to the configuration,
It can be fixed not only in the moving direction of the scanner device but also in the vertical direction.

According to a third aspect of the present invention, the claw member is provided on a scanner device that moves along a guide rail. Therefore, a state in which the scanner device rests on a guide rail arranged in the moving direction is provided. Therefore, even if it performs a scanning action, it can be fixed so as to prevent movement in the vertical direction.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A holding structure of a scanner according to the present invention will be described with reference to the illustrated example. FIG. 1 is a plan view of the image reading apparatus of the present invention, and FIG. 2 is a front view thereof. As shown in FIGS. The scanner device 10 that moves and reads an image of a document is guided by a guide rail 7 disposed on the front side of the apparatus frame 2 and a guide rod 8 disposed on the rear side. The scanner device 10 has a slide member 17 and a rod slide member 18 protrudingly provided at both ends in a direction perpendicular to the moving direction, and a belt fixing portion 19 provided on the rod slide member 18 side of the scanner for driving. It is connected to the belt 24 and reciprocated by the driving device 20. In order to move the scanner device 10, the rod sliding member 18 is guided without play on the guide rod 8 on the rear side of the device, and the slide member is guided on the guide rail 7 having a small friction coefficient on the front frame 4 side. 17 is made to slide.

The scanner device 20 is configured as one reading unit, and is provided with a plurality of mirrors for reflecting light in addition to the lamp 11 and the mirror 12 in the main body of the scanner device. Then, the light reflected by the mirror at the end is imaged on the CCD 14 via the lens 13, and the CCD 14 outputs an optical signal as a digital signal. The frame 3 of the image reading device 1 is shown in FIG.
As shown in FIG. 3, the front frame 4, the rear frame 5 and the bottom
The guide rails 7 are arranged on the inner surface of the front frame 4 so as to protrude, and the guide rods 8 and the driving belts 24 are arranged in parallel inside the rear frame 5. The scanner device 10 attaches the driving side of the driving belt 24 to the belt fixing portion 19,
The return side 24a of the belt is located on the bottom frame side of the frame.

A driving device 20 for reciprocating the scanner device 10 includes a motor 2 supported on the rear frame 5.
The driving pulley 23 is driven from 1 via a belt 22, and the scanner device 10 is driven using a driving belt 24 wound around the driving pulley 23. A tensioner 25 is provided on the other side of the driving device 20. In the tensioner 25, a tension pulley 27 is supported by a support frame 26 whose position can be adjusted, and a tension of a predetermined value is applied by a tension spring 28. Drive belt 2
4 so that a constant value of tension is applied to the driving belt 24. Then, in response to the information on the size of the document set on the platen, the motor 21 is rotated in the normal direction to move the scanner device 10 in the sub-scanning direction.
In performing the operation of returning 0 to the standby position, the tension of the driving belt 24 is prevented from fluctuating, and the moving speed of the scanner device 10 at the time of reading a document can be maintained at a constant speed.

The image reading apparatus 1 is provided with a scanner for fixing a scanner device 10 to a frame 3 in order to cope with a situation where vibration or the like is supposed to be applied to the device during transportation or movement. A lock device 30 is provided in which an engagement claw member 31 protruding from the lower surface of the device 10 and a lock member 35 arranged on the bottom frame 6 of the frame 3 are combined. FIG. 3 shows the structure of the lock device 30. An engagement claw member 31 provided on the lower surface of the scanner device 10 is horizontally attached to the lower end of a hanging arm 32 which is hung below the scanner device frame. The plate member 33 is arranged. Further, the lock member 3 is movable with respect to the opening 6a provided in the bottom frame 6 of the frame 3 in the left-right direction in the drawing (the direction perpendicular to the moving direction of the scanner device).
5 rising part 38 is located. The lock member 35 connects a locking member 36 located at a predetermined gap to the upper surface of the bottom frame 6 with a lower member 39 sliding on the lower surface of the bottom frame 6 by a rising portion 38. It is composed.

The locking member 36 of the lock member 35 includes
A substantially U-shaped engagement groove 37 cut from its tip.
The lower member 39 located on the lower surface of the bottom frame 6 is provided with a screw hole 34 for screwing to the bottom frame 6, and the engaging claw member 31 of the lock device 30 is engaged with the lock member 35. So that it can be stopped. When the lock device 30 is operated, the scanner device 10 is stopped at a predetermined position such as a standby position, so that the lock member 35 can be locked.
Then, after confirming the stop position of the scanner device 10, a space is provided in which the frame 3 of the image reading device can be swung to insert a hand under the bottom frame 6, and a lock member is provided at the bottom of the bottom frame 6. The lower member 39 of the lock member 35 is moved by hand to approach the locking member 36 of the lock member 35 from the side of the hanging arm 32 of the engaging claw member 31, and the hanging arm 32 is inserted into the engaging groove 37 of the locking member 36. And lock it.

Thereafter, the screw hole 34 of the lower member 39 is made to coincide with the screw hole 34a (shown in FIG. 1) provided in the bottom frame 6, and a locking screw is attached to fix the lock member 35 to the bottom frame 6. . In the locked state as described above, the vertical positions of the locking member 36 and the horizontal plate member 33 are set so that the locking member 36 and the horizontal plate member 33 are vertically in contact with or close to each other. This prevents the scanner device from rattling up and down around the guide rod 8 during transportation. In this sense, it is desirable that these lock mechanisms be provided at positions separated from the guide rod 8, that is, on the guide rail 7 side.

As described above, when the engaging claw member 31 is locked and held by the locking member 35, the locking member 36 of the locking member 35 is positioned on the horizontal plate member 33 of the engaging claw member 31. Therefore, when the lock device 30 is operated, the scanner device 10 is fixed in a state in which the scanner device 10 cannot move up and down with respect to the bottom frame 6 of the frame 3. Then, after the image reading device is transported and installed at the place of use, the set screw fixing the lock member 35 is removed, and the lock member 35 is simply moved to the non-operation position. The device 10 can be ready for use. In addition, since the set screw simply fixes the lock member 35, an easily removable member such as a pin can be used.
A hole for holding the lock member 35 in a non-operating state is separately provided in the bottom frame 6, and a locking pin is inserted into another holding hole so as to prevent movement of the lock member and hold the pin. It is possible to

In the embodiment of the present invention, the engaging claw member 3 provided to protrude below the scanner device 10 is provided.
1 and a lock member 3 movably provided on the bottom frame 6
The structure of No. 5 can be arbitrarily changed without departing from the object of the present invention. In other words, when the lock device is activated, if the scanner device 10 can be fixed in a state in which it cannot move in the vertical direction, the scanning direction, and the sub-scanning direction, the horizontal plate member 33 and the locking member 36 can be locked. The structure, the fixing structure of the hanging arm 32 by the engagement groove 37, and the like can be changed as a more reliable one. Further, as for the screw fixing means to be attached to the bottom frame 6, any other fixing means other than the above-mentioned pin can be used.

[0015]

Since the apparatus of the present invention is constructed as described above, a claw member provided at the lower portion of the movable scanner device and a movable claw member provided to be engageable with the claw member are provided. By engaging the lock member, the scanner device can be fixed not only in the moving direction but also in the vertical direction. In addition, since the claw member is provided on the scanner device that moves along the guide rail, even if the scanner device performs a scanning action while being mounted on the guide rail that is arranged in the movement direction, Can be fixed so as to prevent movement.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating a configuration of an image reading apparatus of the present invention.

FIG. 2 is a plan view of the image reading apparatus of FIG.

FIG. 3 is an explanatory diagram illustrating a configuration of a lock device.

[Description of Signs] 1 Image reading device, 2 Platen, 3 Frame, 4 Front frame, 5 Rear frame, 6 Bottom frame, 7 Guide rail, 8
Guide rod, 10 Scanner device, 11
Lamp, 12 mirrors, 13 lenses, 1
4 CCD, 17 slide member, 18 rod slide member, 19 belt fixing portion, 20 drive device, 21 motor, 22 conduction belt, 23
Drive pulley, 24 drive belt, 25 tensioner, 26 support frame, 27 tension pulley, 28 spring, 30 locking device, 31 engagement claw member, 32 hanging arm, 3
3 horizontal plate member, 34 screw hole, 35 lock member, 36 locking member, 37 engagement groove, 38
Start-up part, 39 lower member.

Claims (3)

[Claims] 1. A holding structure comprising a claw member provided at a lower portion of a movable scanner device, and a movable lock member provided to be engageable with the claw member, wherein the claw member and the lock member are provided. The scanner holding structure is characterized in that the scanner device is fixed so as to prevent movement of the scanner device in the movement direction surface and the direction perpendicular to the movement direction by engaging with the scanner device. 2. The method according to claim 1, wherein the claw member is an L-shaped member including a horizontal portion and a hanging portion, and the hanging portion of the claw member is inserted into a U-shaped groove provided in a lock member. The holding structure for a scanner according to claim 1, wherein: 3. The scanner holding structure according to claim 1, wherein the claw member is provided on a scanner device that moves along a guide rail.