JPH0514603Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a scanner shipping lock device.

Conventional technology Conventionally, an optical unit having a light source that illuminates the document on the document table and an image sensor that reads the image of the document is connected to a drive unit in a case that has a transparent document table so that the optical unit can freely move back and forth. There is a scanner in which an original is pressed against an original table by a presser plate rotatably attached to a housing, and an optical unit reads an image of the original while the optical unit is moved in the sub-scanning direction.

Problems to be Solved by the Invention Since the adjustment of the optical system of such an optical unit is extremely delicate, even if adjusted by the manufacturer at the time of shipment, it is likely to go awry if subjected to shocks during transportation or the like. Therefore, the movement of the optical unit is fixed inside the casing before being transported, but after unpacking, it is necessary to disassemble a part of the casing, open the inside of the casing, and unlock the optical unit. In some cases, readjustment may be necessary.

Means for Solving the Problems A housing having a transparent document table on the upper surface, a presser plate rotatably held by the housing and covering the document on the document table, and a holding plate built in the case. An optical unit that optically reads the image of the document, a drive mechanism that reciprocates this optical unit, and a window for opening and closing the light source exchange formed on the side of the housing near the end of the optical unit. and a fixing member that is selectively housed inside the window and has a lock portion that engages with the power transmission portion of the optical unit or the drive mechanism.

Function: Therefore, the door is opened and the lock part of the fixing member is engaged with the optical unit or the power transmission part of the drive mechanism, thereby fixing the optical unit and preventing its adjustment from going out of order during transportation. When in use, the door is opened and the fixing member is taken out to allow the optical unit and drive mechanism to operate.

Embodiment A first embodiment of this invention will be described based on FIGS. 1 to 5. Reference numeral 1 denotes a housing, and the housing 1 is formed by combining a main housing 2 with an open top surface and a top cover 3 with an open bottom surface. A transparent document table 4 is provided on the top surface of the top cover 3, and a press plate 6 for covering the document 5 on the document table 4 is attached to the end of the housing 1 so as to be vertically movable. Furthermore, an optical unit 7 is provided inside the housing 1. This optical unit 7 consists of a unit body 9 that is slidably held on a guide shaft 8.
, a straight tube fluorescent lamp 10 that is a light source for illuminating the original 5, a reflector (not shown) that reflects the image of the original 5, and a lens 11 that passes the light from the reflector.
and an image sensor 12 are attached. Furthermore, a drive mechanism 13 for reciprocating the optical unit 7 in the sub-scanning direction of the original 5 is provided inside the housing 1. This drive mechanism 1
Reference numeral 3 denotes an annular timing belt 14 partially fixed to the unit main body 9, a pair of pulleys 15 wound around the timing belt 14 (although only one is shown), and a forward and reverse rotation mechanism that drives one of the pulleys 15. It consists of a freely adjustable motor (not shown). Furthermore, a window 16 is formed in the housing 1 to allow the fluorescent lamp 10 to be replaced close to the end surface of the optical unit 7.
As shown in FIG. 5, one end of this window 16 is formed with U-shaped notches 17 located on both the upper and lower edges and arranged on the vertical axis, and a protruding piece that supports the end of the door 18. 19 is formed. A pin 20 that is rotatably held in a notch 17 is provided on both upper and lower edges of one end of the door 18, and a knob 21 is provided on the free rotatable end side.
are rotatably fitted. Inside this knob 21 is a locking piece 2 that engages with the upper or lower edge of the window 16.
2 is formed. Further, a stopper 2 is provided inwardly of the window 16 and abuts against the inner surface of the door 18 on the free rotation end side.
3 is fixed, and this stopper 23 holds a door open switch 24 connected to the power supply circuit, and this door open switch 24 is connected to the door 18.
When the door 18 is opened, the actuator 25 elastically protrudes to turn off and cut off the power supply circuit.

Next, a fixing member 26 is provided which is accommodated through the window 16. This fixing member 26 includes a fork-shaped locking piece 27 that is a lock portion that holds a part of the unit body 9, a notch 29 that engages with a shaft 28 that supports the pulley 15, and a notch 29 that contacts the inner surface of the door 18. The contacting bending piece 30 is integrally formed.

In such a configuration, when the power is turned on and the motor of the drive mechanism 13 is rotated, the pulley 15 rotates together with the timing belt 14 to move the unit main body 9 to the home position and read the image of the original 5 from this position. An action is taken. That is, in the process of the optical unit 7 moving in the sub-scanning direction of the original 5 by the guide shaft 8, the original 5 is first illuminated by the fluorescent lamp 10, the image of the original 5 is reflected by the reflector, and the image of the original 5 is reflected by the lens 11 into the image sensor 12.
is imaged. During assembly, in order to accurately read the image of the original 5, adjustments are made to the parallelism of the reflector to the document table 4 and to the main scanning direction, as well as the relative relationship between the reflector, the lens 11, and the image sensor 12. . After this adjustment, the fixing member 26
into the window 16, and insert the notch 29 into the shaft 2 of the pulley 15.
8, and a part of the unit main body 9 is held between the locking pieces 27. Then, the door 18 is closed using the pin 20 as a fulcrum, and the knob 21 is turned to engage the locking piece 22 with the upper or lower edge of the window 16. As a result, the door 18 is maintained in a closed state, and the fixing member 26 is
8 and is engaged with the shaft 28 of the pulley 15 to be positioned, and the optical unit 7 is fixed in this state.

Therefore, even if a shock is applied to the casing 1 during transportation or the like, the movement of the optical unit 7 is fixed and the mounting conditions of the reflector, lens 11, image sensor 12, etc. will not be distorted. Furthermore, since the fixing member 26 is housed in the housing 1, it can be easily packed. When using the optical unit 7 after transportation, simply turn the knob 21 to remove the locking piece 22 from the upper or lower edge of the window 16, open the door 18, and take out the fixing member 26 to attach the optical unit 7 to the fixing member. It can be released from 26.

As mentioned above, when replacing the fluorescent lamp 10, the window 1
6 can be used to engage the fixing member 26 with the optical unit 7, and since the window 16 approaches the end of the light source unit 7, the fixing member 26 can be easily engaged and disengaged from the optical unit 7. be able to.

Next, a second embodiment of this invention will be explained based on FIG. 6. The same parts as in the previous embodiment are designated by the same reference numerals, and the description thereof will be omitted. In this embodiment, a timing belt 1 is used as a power transmission section of a drive mechanism 13.
A fixing member 34 is provided, which has teeth 32 which are locking portions that mesh with teeth 31 formed on the inner surface of the timing belt 4, and a pair of elastic pieces 33 which press the timing belt 14 inward from both outer sides. Therefore,
When the window 16 is opened and the teeth 32 of the fixing member 34 and the teeth 31 of the timing belt 14 are in mesh with each other, the movement of the timing belt 14 is fixed, and accordingly the movement of the optical unit 7 is fixed.

Effects of the invention Since this invention is constructed as described above, by opening the door and engaging the lock portion of the fixing member with the optical unit or the power transmission portion of the drive mechanism, it is possible to prevent misadjustment of the optical unit during transportation. In addition, by storing the fixing member in the housing, it can be packed easily.Furthermore, since the window for replacing the light source is close to the end of the light source unit, the fixing member can prevent the optical unit from being blocked by the fixing member. This has the advantage of making fixing and releasing operations easier.

[Brief explanation of drawings]

Figures 1 to 5 show the first embodiment of this invention, with Figure 1 being a partially cutaway plan view showing the inside of the casing, the fixing member, and the door, and Figure 2 being a perspective view. Figure 3 is a partial horizontal sectional view showing an enlarged view of the window area of the housing along with the optical unit; Figure 4 is a horizontal sectional view showing the state in which the fixing member is attached;
The figure is a partially enlarged exploded perspective view showing the door support structure, and FIG. 6 is a perspective view of the timing belt and fixing member showing a second embodiment of this invention. 1...Housing, 4...Original table, 5...Original, 6...
... Pressing plate, 7 ... Optical unit, 10 ... Fluorescent lamp (light source), 12 ... Image sensor, 13 ... Drive mechanism, 14 ... Timing belt (power transmission part of drive mechanism), 18 ... Door, 26...Fixing member, 2
7... Locking piece (lock part), 32... Teeth (lock part), 34... Fixing member.

Claims (1)

[Scope of utility model registration request] a housing having a transparent original platen on the top surface; a presser plate rotatably held by the housing to cover the original on the original plate; an optical unit for reading, a drive mechanism for reciprocating the optical unit, a door for opening and closing a window for replacing the light source formed on the side surface of the housing close to the end of the optical unit, and a door for opening and closing the window for replacing the light source, and 1. A shipping lock device for a scanner, comprising a fixing member having a lock portion that is selectively housed in one side and engages with the optical unit or the power transmission portion of the drive mechanism.