JP2000341478A - Scanner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a carriage which is manually driven in a y-direction easily catchable by attaching a handle to the carriage. SOLUTION: A scanner supports a carriage 4 mounted with a light source 6 extended in an x-direction, in a state where the carriage 4 can be moved in a y-direction at both ends in the x-direction and coupled with a y-direction driving wire at one end. A handle 18 which can be turned from a housing position to a using position is attached to the carriage 4, with the center of rotation of the handle 18 at the driving wire-side end. The handle 18 is turned automatically and returned to the housing position from the using position by torque caused by its own weight. The handle 18 has a long hole, though which a long shaft body 19 which becomes the center of rotation is passed in the longitudinal direction for housing the handle 18, with the center of gravity of the handle 18 at the driving wire-side end.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carriage on which an illumination light source extending in the x direction is mounted so as to be movable at both ends in the x direction in the y direction.
The invention relates to a scanning device coupled to a directional drive.

[0002]

2. Description of the Related Art FIG. 8 shows a conventional example of this type of scanning apparatus.
The original placed on the contact glass 2 supported by the housing 1 and pressed by the pressure plate 3 is illuminated by the illumination lamp 6, and the reflected light of the original is reflected by the first mirror 7, the second mirror 8 and the third mirror. -9
Reflected by the lens 10 and the CC on the image reading substrate 11
D. The clear light 6 and the first mirror 7 are provided on the first carriage 4, and the second mirror 8 and the third mirror 9 are provided on the second carriage 4.
It is mounted on the carriage 5. The illuminator 6 is long in the horizontal x direction, and therefore the carriages 4, 5 are also long in the x direction.
In FIG. 8, the carriages 4 and 5 are moved from left to right (horizontal y).
Direction), the original is scanned.
The second carriage 5 is simultaneously driven in the same direction at half the scanning speed of the first carriage 4 in the y direction.

In recent years, in general, OA equipment has been demanded to be small, light and inexpensive, and a small, lightweight and inexpensive scanning apparatus has been desired. Naturally, simplification is required for the configuration of the device itself, and simplification of the y-scan drive system is no exception. In most cases, the one-side drive by the simplification of the drive system is performed by setting one of both ends of the carriage extending in the x direction as a drive side, and arranging a robust support such as a rod or a linear ball rolling slide rail on the opposite side ( The free end, i.e. the other end, is provided with slide rails which hold the carriage.

[0004]

Here, the carriage has a structure which is strong with respect to the force from the drive side but weak with respect to the force from the free end, so that the vicinity of the free end is reduced at the time of manufacture and service in the market. When held and moved (slid), the carriage is deformed and cannot be moved smoothly, and in the worst case, the carriage may be damaged.

[0005] In addition, a normal carriage is miniaturized in order to minimize the inertial force, and if a care is not taken of a place where the carriage is held, the carriage touches an exposure light source or a mirror and affects a read image. In addition, since the housing 1 of the image reading apparatus is near the driving side end, when it is difficult to hold the carriage when moving the carriage, there is a risk of injury by touching the edge of a sheet metal or the like.

An object of the present invention is to facilitate manual operation of a carriage. Specifically, the first purpose is to make it easy to grasp the carriage for the y-direction drive by manual operation.
For this purpose, the carriage is equipped with a handle for this purpose.
The purpose of.

[0007]

(1) A carriage (4) on which an illumination light source (6) extending in the x direction is mounted is movably supported at both ends in the x direction in the y direction. On the other hand, in the scanning device coupled to the y-direction driving body (14), the carriage (4) is almost entirely projected from the storage position along the surface of the carriage (4) to the outside of the carriage (4). A scanning device comprising a handle (18) rotatable to a use position where the rotation center is located at the end on the y-direction driving body (14) side. In addition, in order to facilitate understanding, the reference numerals of the corresponding elements in the embodiments shown in the drawings and described later are added for reference in parentheses.

According to this, at the time of manufacture or service in the market, the operator turns the handle (18) from the storage position to the use position, grasps it, and moves in the y direction by hand to move back and forth. Check the condition of the mechanism, such as the lighting (6) and the first mirror (7)
The carriage can be easily manually driven without touching the carriage.

In other words, there is a handle (18) that can be a part to be held when the carriage is moved during manufacturing or when maintenance is performed in the market (exchanging a lamp or cleaning a mirror), so that careless places can be saved. In addition to not causing damage (deformation, etc.) to the carriage, the force required to move the carriage can be smaller than when the carriage has a free end.

In the aspect in which the storage position is set to the horizontal position and the use position is set to the vertical or substantially vertical position, the handle (18) can be stored horizontally so that the contact glass can be stored.
Do not worry about interference with (2), the handle (18) is lengthened to improve operability, or the contact glass (2)
Since it can be held above the holding frame (1a), there is no injuries at the bent edges. As a result, it is possible to achieve both slimness and operability and safety of the device. Also, since the handle (18) is separate from the carriage (4), use a material with low thermal conductivity, such as resin, against high temperatures due to heat conduction when the illuminating lamp is a high heating element such as a halogen lamp. This can prevent discomfort (worst case, burns) when the operator holds the handle (18).

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (2) The handle (18) rotates to the storage position when the user's acting force disappears at a position outside the storage position (FIG. 6 (b)). In one aspect ((b) of FIG. 6), the use position is an inclined position close to a vertical upright position, the storage position is a horizontal position parallel to the x direction where the detent claw (18b) hooks on the carriage, and in the use position. The handle (18) has a rotating moment due to its own weight (gravity) acting on the handle (18).
When you release your hand from the handle, the handle (18) automatically becomes the storage position.
Note that a return spring may be added to apply a spring force to return the handle (18) to the storage position. Damage to components due to forgetting to store the handle (18) (interference when mounting the contact glass, etc.) can be prevented. (3) The handle (18) has a long hole (18c) which is long in the longitudinal direction and through which the shaft (19) serving as the center of the rotation penetrates (FIG. 7).
Since the handle (18) can slide in the longitudinal direction with respect to the shaft body (19), the handle (18) can be slid in the retracted position closest to the y drive end so that the handle (18) can be slid. The center of gravity is near the y drive end, and the carriage (4)
The stability of the y-scan drive is not impaired. That is, the handle
The long hole (18c) provided in (18) brings the center of gravity of the handle (18) at the storage position closer to the y-scan drive side (in a direction away from the free end side). An increase in the amount of inertia toward the free end, which is caused by a change in behavior due to a jitter and a straight line, can be minimized. As a result, even if the width of the frame (1a) for holding the contact glass or the like in the x direction is large, it is not necessary to worry about the distance from the drive side of the rotation fulcrum of the handle (18) and the length of the handle (18). It is easy to set the optimal handle length, and it is possible to achieve both operability, safety, and image quality (stable behavior during carriage y scanning).

[0012]

FIG. 1 shows a cross section of a first carriage 4 according to a first embodiment of the present invention, FIG. 2 shows an appearance of the first carriage 4, and FIG. 3 shows a support structure of the end of one carriage 4 on the y-drive side. The first carriage 4 is held and supported by linear ball rolling slide rails 12 and slide rails 13 so as to be able to reciprocate. Similarly, the second carriage 5 (FIG. 8) is supported by the slide rails 12 and 13, but is not shown.

The drive-side end of the first carriage 4 is fixed to a wire 14. The wire 14 is an element of the y scanning drive mechanism, and moves in the y direction to drive the first carriage 4. The first carriage 4 is provided with an illuminating lamp 6, and a handle 18 is provided near the driving side thereof. The handle 18 can rotate around a fulcrum screw 19 as shown in FIG. 1 a is a frame for supporting the contact glass 2 on the top plate of the housing 1.

As shown in FIGS. 1 and 3, the first carriage 4 is held by a bracket 16 attached to an inner rail on a linear ball rolling slide rail 12. As shown in FIG. 1, the first carriage 4 is provided with a slit 4a, and the light of the illumination lamp 6 irradiates a document (not shown) on the contact glass 2,
The reflected light of the document is projected by a first mirror 7 and a second mirror 8 and a third mirror 9 on the second carriage 5 via a lens 10 onto a CCD on an image reading substrate 11.

The positions shown in solid lines in FIGS. 1 to 3 that are parallel to the x direction and exactly contact the x, z surfaces of the first carriage 4 are as follows.
The use position of the handle 18 is a storage position of the handle 18, and a position that is substantially vertical and rises from the first carriage 4 and protrudes upward as shown by a two-dot chain line in FIGS.

FIG. 4 is an exploded view in which the handle 18 is detached from the first carriage 4. The handle 18 shown in FIGS.
The carriage 4 is passed through the hole 20a of the washer-like elastic member 20 through the screw stem of the screw 19 and further through the round hole 18d of the handle 18.
And the elastic member 20 is compressed. Due to the presence of the elastic member 20, a moderate turning load is applied to the handle 18 and the handle 18 can be turned. However, the handle 18 does not turn unless a considerably strong turning force is applied by hand. Thus, the handle 18 remains in the storage or use position described above.

In FIG. 5, the handle 18 is raised to the use position, and the handle 18 is gripped by the finger of the hand HAND, and the first carriage 4 is driven in the y direction by manual driving to confirm the state of the y movement. Indicates a state in which Thus, the first carriage 4
The first carriage 4 (the handle 18) can be surely grasped and moved without touching the element involved in reading the original image. At this time, screw 19
Is located at the y drive end of the first carriage 4, so that the first carriage 4 does not receive a large moment that swings its free end (the other end) in the direction of rotation about the Z axis. , The first carriage 4 can be manually driven smoothly in the y direction.

FIG. 6 shows a modified portion of the first carriage 4 and a modified portion of the handle 18 according to a second embodiment of the present invention. (A) is a main part plan view, and (b) is a front view. Handle 18 and first
The carriage 4 is provided with anti-rotation claws 18b and 4c, respectively.
The angle is less than 90 ° that automatically returns to the storage position indicated by the solid line in the moment of rotation by its own weight. This is defined by the rotation stopping pawl 4c on the first carriage 4 side. The handle 18 automatically returns to a horizontal position (storage position) and rotates by its own weight, and in the horizontal position, the claw 18b for stopping rotation of the handle 18 is moved to the first position.
The upper surface of the carriage 4 is hit, and the handle 18 is maintained in a horizontal position. Here, the elastic member 20 shown in FIG. 4 is not used.

Third Embodiment Referring to FIG. 3, as the width of the frame 1a for supporting the contact glass 2 in the x direction becomes larger, the handle 1 becomes larger.
The distance L from the y-drive mechanism (wire 14) coupling end side of the center of gravity 18a of No. 8 increases. In the third embodiment shown in FIG. 7, in order to prevent this,
Nine round rod-shaped trunks 18c are provided with slidable long holes 18c, which can be slid vertically toward the center in the x direction by the length of the long holes 18c from the storage position shown by the solid line. Thus, the handle 18 located below the frame 1a (storage position) can be raised up higher than the frame 1a and can be grasped by a finger. When the handle 18 is placed at the storage position shown by the solid line, the center of gravity 18a of the handle 18 is closer to the y drive mechanism coupling end (the right end of the first carriage 4 shown in FIG. 7) than the screw 19. Even if the width of the frame 1a in the x direction is large, it is not necessary to worry about the distance from the drive side of the rotation fulcrum (19) of the handle 18 and the length of the handle 18, so that it is easy to set the optimal handle length. Become.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a cross section of a first carriage 4 according to a first embodiment of the present invention.

FIG. 2 is a reduced perspective view showing an appearance of a first carriage 4 shown in FIG.

FIG. 3 is a front view of the first carriage 4 shown in FIG.

FIG. 4 shows a handle 18 shown in FIG.
FIG. 2 is an exploded cross-sectional view showing the disassembled state.

FIG. 5 is a perspective view of the first carriage 4 shown in FIG.
FIG. 2 is a cross-sectional view similar to FIG. 1, illustrating a mode of manually driving in the y-direction by gripping a grip.

FIGS. 6A and 6B show a main part of a second embodiment of the present invention, and FIG.
Is a plan view, and (b) is a front view.

FIG. 7 is a front view showing a main part of a third embodiment of the present invention.

FIG. 8 is a block diagram showing a configuration common to a conventional example of a scanning device and an embodiment of the present invention.

[Explanation of symbols]

1: Housing 1a: Frame 2: Contact glass 3: Press plate 4: First carriage 4a: Slit 4b: Female screw hole 4c: Claw 5: Second carriage 6: Illumination lamp 7: First mirror 8: Second mirror 9: Third mirror 10: Lens 11: Image reading board 12: Slider
13: Slide rail 14: Wire 16: Bracket 18: Handle 18a: Center of gravity 18b: Claw 18c: Long hole 18d: Round hole 19: Screw 20: Elastic member 20a: Hole

Claims (3)

[Claims] 1. A scanning device in which a carriage on which an illumination light source extending in an x direction is mounted is movably supported at both ends in the x direction in a y direction, and one of the two ends is coupled to a y direction driver. A handle that can be rotated from the storage position along the surface of the carriage substantially to the use position where most of the carriage protrudes outward from the carriage, with a rotation center positioned at the end on the y-direction drive side. A scanning device, comprising: 2. The scanning device according to claim 1, wherein the handle rotates to the storage position when the user's acting force disappears at a position outside the storage position. 3. The scanning device according to claim 1, wherein the handle has a long hole having a length y in a longitudinal direction thereof and through which a shaft serving as a center of the rotation penetrates.