JP2591792B2 - Clean workbench - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clean workbench, and more particularly to a clean workbench suitable for taking in and out equipment stored in an airtight case with respect to a work space.

[Prior Art] As a conventional technique of a cleaning workbench, there is a technique disclosed in Japanese Utility Model Laid-Open No. 59-143672.

In this prior art, as shown in FIG.
A side wall 3 is provided with a loading / unloading section 3 for loading / unloading equipment 4 with respect to a working space 2 provided inside the working table body 1.

When the equipment 4 is to be put into the work space 2, the airtight case 5 containing the equipment 4 is taken out and put in the door 3.
After the opening 3a has been inserted, the hermetic case 5 is put into the work space 2, and the equipment 4 is taken out of the hermetic case 5 in the work space 2. When taking out the equipment 4 from the work space 2, after putting the equipment 4 in the airtight case 5 in the work space 2, the airtight case 5 is put in the insertion / removal section 3, and then the outer door 3 a is opened. The airtight case 5 is taken out of the access section 3. At that time, since the equipment 4 is a harmful substance, it is sterilized once when the equipment 4 is put in the airtight case 5 in the working space 2, and is also sterilized when the airtight case 5 is put in the access section 3. Thereafter, the hermetic case 5 is taken out of the in / out section 3.

The airtight case 5 is for transporting the equipment 4 without the operator directly touching the equipment 4 outside the work space 2.

[Problems to be Solved by the Invention] By the way, in the above-described conventional technology, the equipment 4 is sealed in the airtight case 5.
In order to sterilize once in the working space 2 when it is put in the storage space 2 and to sterilize it in the in / out section 3 when the airtight case 5 is put in the in / out section 3, not only sterilization work is required twice but also in the sterilization work. There is a problem that it takes time and effort in itself, and thus sterilization cannot be easily performed.

Also, even if the sterilization is performed sequentially in the work space 2 and the insertion / removal section 3, harmful substances may float in the work space 2 and the access section 3 because both are always in communication. When the outer door 3a is opened to take out from the part 3, there is a problem that harmful substances flow outside and spread.

Further, since the insertion / removal portion 3 itself is large and attached to and protrudes from the workbench main body 1, there is a problem that it obstructs the work or passage.

SUMMARY OF THE INVENTION An object of the present invention is to provide a sterilizer that can easily perform a sterilization process, prevent harmful substances from leaking outside, and hinder an operator when a hermetic case is removed. It is an object of the present invention to provide a clean workbench capable of preventing the problem.

Means for Solving the Problems In the present invention, a work space for handling harmful substances inside, a clean air supply means for supplying clean air to the work space, and an exhaust gas cleaner for purifying exhaust air from the work space A worktable main body having an opening means for the working space and the working space, and an airtight case detachably provided on the worktable main body to have an airtight door and to transport equipment stored therein, A communication opening formed at a position different from the opening of the workbench main body and communicating with the outside of the work space and having a shape into which the airtight case can be inserted; and air provided in the communication opening. Leak prevention means for preventing leakage to the outside of the work space via the communication opening, and the airtight door is inserted into the workbench main body when the airtight case side of the airtight case is inserted into the communication opening. Can be opened and closed within Locking means for locking the airtight case to the worktable main body at the position.

[Operation] First, when putting equipment into the work space of the workbench body,
After inserting the airtight case containing the equipment into the opening for communication of the workbench main body, attaching the airtight case to the workbench main body by the locking means, and also connecting the airtight case and the work space via the opening, This is performed by a worker moving equipment from the airtight case into the work space.

On the other hand, when removing equipment from the work space, store the equipment in the airtight case through the opening from the work space, close the airtight door of the airtight case, sterilize the work space side of the airtight case, further prevent leakage After the opening is closed by the means, the airtight case is removed from the worktable body by releasing the locking of the locking means.

In the present invention, as described above, since the leak prevention means prevents the air in the working space from leaking to the outside, the airtight case can be sterilized once when the airtight case is removed from the worktable main body, so that the sterilization can be performed only once. The treatment can be facilitated, and even if harmful substances float in the working space, there is no risk of leakage to the outside, and removing the airtight case from the worktable main body does not disturb the worker. In addition, when the airtight case is removed from the workbench main body by releasing the locking of the locking means, there is no projecting part of the workbench main body, so that it does not hinder the worker or the like.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 12. 1 to 3 show a first embodiment of the cleaning workbench according to the present invention.

The cleaning work table of the embodiment can be roughly classified into FIG. 1 and FIG.
As shown in the figure, a worktable main body 11, an airtight case 18, and an opening 23 for communication are provided.

The worktable body 11 has a work space formed therein.
12 and an opening 16 for the work space 12.

The work space 12 has a work table 13 at the bottom, and air discharged by a blower (not shown) passes through a filter 14,
Purified air is supplied by being purified. The blower is installed at a position below the work space 12 in the work table main body 11, sucks air in the work space 12,
In addition, while the exhaled air supplies clean air by passing through the filter 14 through the duct, the filter 15
The clean air is sent to the outside by passing through.

An opening 16 for the work space 12 is formed on the front surface of the workbench main body 11 so as to connect the work space 12 to the outside.
It has a shutter 17 for opening and closing.

The hermetic case 18 accommodates and transports the equipment 20 and has an airtight door 19 at one end thereof, and is mounted on a carriage 22 and carried. The equipment 20 is made of, for example, harmful substances such as chemicals and test substances, and is mounted on the moving platform 21 in this example. As shown in FIG. 3, the equipment 20 is taken out of the workbench main body 11 while being stored in the airtight case 18, transported to the storage case 100 and stored there, and stored in the airtight case 18 when necessary. Storage case 10
0, transported to the workbench body 11, and
After being subjected to predetermined processing in the storage case 10, the storage case 10 is taken out of the worktable main body 11 while being stored in the airtight case 18.
Stored at 0.

The communication opening 23 is formed at a position different from the opening 16 for the work space 12 in the workbench main body 11. That is, the opening 23 communicates the working space and the outside with the outer wall on the right side of the worktable main body 11 in FIG.
It is formed in a shape into which the 18 can be inserted, and has a size substantially corresponding to the airtight case 18.

In addition, the opening 23 has a leakage preventing means that can prevent air in the working space 12 from leaking to the outside.
The leakage prevention means is constituted by a shutter 24 supported on the same side wall as the opening 23 of the workbench main body 11 so that the opening 23 can be opened and closed by a roller provided in the side wall. By closing the shutter 24, the opening 23 is closed in an airtight state, so that the air in the work space 12 does not leak to the outside.

Further, the opening 23 has locking means for locking the airtight case 18 when the airtight case 18 is inserted. The locking means includes a hook 26 attached to a side wall of the worktable main body 11 and a locked plate 27 provided on an outer wall of the airtight case 18. The hook 26 protrudes laterally above and below the opening 23 in the side wall of the workbench main body 11, and has a hook projection (not shown) directed inward at the tip. The locked plate 27 is provided so as to protrude at a position corresponding to the hook 26 on the outer wall of the airtight case 18 and has a thickness substantially equal to the distance between the hook protrusion of the hook 26 and the side wall of the worktable body 11. Then, when the airtight door 19 side of the airtight case 18 is inserted into the opening 23, the locked plate 27 is pushed into the hook 26, and the tip of the locked plate 27 gets over the hook projection of the hook 26, The airtight case 18 is locked by being sandwiched between the hook projection and the side wall of the worktable main body 11.

Since the cleaning work table of the embodiment is configured as described above,
First, when the equipment 20 is to be inserted into the work space 12 of the workbench main body 11, the airtight case 18 containing the equipment 20 is inserted into the communication opening 23 of the workbench main body 11, and the hook 26 of the locking means is covered. The airtight case 18 is connected to the workbench main body 11 by locking the locking plate 27. In this case, since the shutter 24 as the leakage prevention means is kept closed, there is no communication between the working space 12 and the airtight case 18.

Next, the shutter 24 that closes the opening 23 is opened, and the airtight door 19 of the airtight case 18 is opened, and the airtight case 18 and the work space 12 are communicated with each other. The transfer is performed by transferring the equipment 20 to the apparatus. The movement of the equipment 20 from the airtight case 18 to the work space 12 is as follows.
The equipment 20 may be moved by directly grasping the equipment 20 or by moving the movable base 21.

On the other hand, when removing the equipment 20 from the work space 12,
The airtight case 18 is stored in the airtight case 18 from the work space 12 through the opening 23, and the airtight door 19 of the airtight case 18 is closed.
After the working space 12 is sterilized, the opening 23 is closed by the shutter 24, and then the lock between the hook 26 of the locking means and the locked plate is released, so that the airtight case 18 is
Remove from

Therefore, after sterilizing the airtight case 18 in the work space 12,
When the shutter 24 is closed, the opening 23 is
Can be isolated from the inside and outside, so that when the airtight case 18 is removed from the workbench main body 11, harmful substances in the work space 12 can be prevented from leaking to the outside. Moreover, the sterilization operation can be performed only once, so that the sterilization process can be facilitated.

Furthermore, although the airtight case 18 protrudes when the airtight case 18 is connected to the workbench main body 11, there is no protrusion when the airtight case 18 is removed, so that there is no hindrance to an operator or the like as in the related art.

Further, in the illustrated embodiment, as shown by broken lines on both sides of the shutter 24 in the side wall of the workbench main body 11, a sterilizer 25 composed of a chemical spray, a UV lamp (sterilizing lamp) or the like is provided, so that an airtight case is provided. The sterilization process of 18 becomes easier.

4 and 5 show a modification of the leak preventing means.

In this case, the point is that the shutter 24 as the leakage prevention means has an automatic opening / closing mechanism. The automatic opening / closing mechanism includes an electric roller 28, a first sensor 29, a second sensor 30, a sterilizer 31, a controller 32, and an operation switch 33.

That is, the electric roller 28 is for opening and closing the shutter 24, and supports the shutter 24 in a side wall forming the communication opening 23 of the worktable body 11, and is driven to rotate in one direction. Thus, the shutter is closed, and the shutter is opened by being inverted. First
The sensor 29 detects the presence / absence of the airtight case 18 and includes a limit switch.
The airtight case 18 is provided at a position corresponding to the locked plate 27 of the airtight case 18 on the side wall portion of the airtight case 18 and is operated by the locked plate 27 when the airtight case 18 is attached to the workbench body 11. I try to detect that. The second sensor 30 is attached to a position near the electric roller 28 in the side wall of the workbench main body 11 and is arranged at a position in contact with the shutter 24, and the position of the contact 30 a changes according to the opening and closing of the shutter 24. Thus, the opening / closing of the shutter 24 is detected. The sterilizer 31 is mounted inside the side wall of the workbench main body 11, and is disposed above the opening 23.
When is closed, the workbench main body 11 side of the airtight case 18 is sterilized, and is constituted by, for example, a chemical liquid spray or a UV lamp (sterilizing lamp). The controller 32 is electrically connected to the electric roller 28, the first sensor 29, and the second sensor 30, and when the airtight case 18 is attached to the workbench main body 11, the first sensor 29 detects the presence of the airtight case 18. When the electric roller 28 is driven to open the shutter 24 and the first sensor 29 detects the absence of the airtight case 18 by removing the airtight case 18 from the worktable main body 11, the shutter is opened.
The control is such that the electric roller 28 is driven to close the 24.
Further, the controller 32 operates the sterilizer 31 for a predetermined time to sterilize the shutter 24 when the shutter 24 is closed by the detection of the second sensor 30. When the operator presses the operation switch 33 when removing the airtight case 18 from the workbench main body 11, the controller 32 controls the electric roller 28 and the sterilizer 31 in a series of desired orders. Reference numeral 36 denotes a packing provided between the hooks 26 of the workbench main body 11.

Therefore, according to this embodiment, the opening and closing of the shutter 24 and the sterilization operation can be automatically performed according to the attachment and detachment of the airtight case 18 to and from the workbench main body 11, so that the airtight case 18
The work relating to the attachment and detachment of the device can be omitted, and the work can be simplified.

6 and 7 show another modified example of the leak preventing means.

This embodiment differs from the embodiment shown in FIGS. 4 and 5 in that the automatic opening / closing mechanism further includes an interlock portion 34. That is, the interlock portion 34 is formed of a solenoid, and usually makes the hook 26 as a locking means free, and the airtight case 18
When the first sensor 29 detects the presence of the airtight case 18 by attaching the hook 26, the controller 32 drives the restraining lever 35 to move forward to a position close to the hook 26, restrains the hook 26, and depresses the operation switch 33. Then, the restraint on the hook 26 is released by the controller 32 retracting the restraint lever 35. Therefore, when the airtight case 18 is attached to the workbench body 11, the hook 26 is restrained by the interlock portion 34, so that the hook 26 and the locked plate 27 are inadvertently released. Can be eliminated, and harmful substances in the work space 12 can be prevented from leaking to the outside even during work.

FIG. 8 and FIG. 9 show a second embodiment of the present invention.

This embodiment is different from the first embodiment in that
The point is that the shutter is changed to another configuration as the leakage preventing means.

That is, as a means for preventing leakage in this case, a blower 37
, A sensor 40, and a controller 41.

The blower 37 is installed at a position below the communication opening 23 of the worktable main body 11, and normally sucks clean air and external air sent into the work space 12 through the air holes 38, and discharges air therefrom. The gas is purified by passing through a filter 39 provided in the filter and exhausted to the outside.

The sensor 40 detects the presence or absence of the airtight case 18 and is formed of a limit switch, and is provided, for example, at a position corresponding to the locked plate 27 of the airtight case 18 on the side wall of the worktable main body 11, Workbench body 11 with airtight case 18
By operating at the time of attachment, the presence of the airtight case 18 is detected.

The controller 41 uses the sensor 40 to
When the sensor 40 detects the presence of the airtight case 18 by the airtight case 18 attached to the workbench main body 11, the blower 37 is stopped, and When the sensor 40 detects the absence of the airtight case 18 by removing the airtight case 18 from the base body 11, the blower 37 is driven. In the figure, reference numeral 62 denotes an alarm device.

Therefore, in this embodiment, when the airtight case 18 is inserted into the opening 23 and the airtight case 18 is attached to the workbench body 11,
When the blower 37 is stopped by the detection of the sensor 40 and the airtight case 18 is removed from the workbench main body 11, the blower 37 is driven by the detection of the sensor 40, and the air in the work space 12 and the external air are Inhalation and the leak prevention function automatically work, so that even if a harmful substance floats in the work space 12, it is possible to reliably prevent the harmful substance from leaking outside.

FIG. 10 is an explanatory diagram of an example of the storage case 100. The storage case 100 is formed in a box shape having a space inside,
The internal space has a structure in which the airtight case 18 containing the equipment 20 is stored in two levels. A case opening 101 is formed at a position corresponding to each step of the internal space on the front surface of the storage case 100, and a case shutter 102 for opening and closing the case opening 101 is provided in the case opening 101.

In the storage case 100, clean air is supplied into the storage case 100 when air discharged from a blower (not shown) passes through a filter 103 as shown by an arrow A, and is exhausted as shown by an arrow B through a filter 104. It is basically similar in construction to the workbench.

Further, the storage case 100 is provided with a case opening 105 for communicating between the inside and the outside at a position different from the case opening 101, that is, on the right side wall, and the airtight case 18 is inserted into the case opening 105. By attaching the airtight case 18 to the storage case 100, the equipment 20 is carried in and stored therein. At this time, after the equipment 20 is carried into the storage case 100, the case shutter 102 is closed, the area of the case opening 101 is reduced, the flow rate of the inflow airflow A is reduced, and the flow rate is reduced.
This is because [inflow air volume = opening area × inflow airflow wind speed], and the airflow for making the inflow airflow A wind speed v ≧ 0.4 m / s is reduced as the opening area decreases. Since the processing air volume is reduced, the inside of the storage case 100 can be reduced in noise and energy can be saved. When carrying out the equipment 20, the case shutter 102 is raised, the airtight case 18 is attached to the storage case 100, and the equipment 20 is carried into the airtight case 18 for carrying out.

11 and 12 show various modifications of the airtight case 18, in which the airtight case 18 includes a blower 181 and filters 182 and 18.
3, air can be supplied to the inside by arranging the shutter 184 and the like as shown in FIG.

[Effects of the Invention] As described above, according to the present invention, a worktable main body having a work space, clean air supply means, exhaust gas purification means, and an opening for the work space, and an airtight case having an airtight door When,
It has a communication opening, a leak prevention means, and a locking means, and prevents the air in the work space of the workbench main body from leaking outside by the leak prevention means, so that the sterilization operation can be performed at once. As a result, sterilization can be made easier, and even if harmful substances are floating in the work space, there is no risk of leakage to the outside, and when the airtight case is removed from the work table main body, Since there is no protrusion, there is also an effect that it is possible to prevent a worker from getting in the way.

[Brief description of the drawings]

1 and 2 show a first embodiment of a cleaning workbench according to the present invention in a front view before mounting an airtight case and a front view in mounting the airtight case, and FIG. 3 shows a state between a workbench main body and a storage case. FIG. 4 is an enlarged view of a main part showing a modification of the leak preventing means, FIG. 5 is an enlarged view showing the same when the airtight case is attached, and FIG. 6 is another view of the leak preventing means. FIG. 7 is an enlarged view of a main part showing a modification of the embodiment, FIG. 7 is an enlarged view of the same when the airtight case is attached, and FIGS. 8 and 9 show a second embodiment of the present invention. FIG. 10 is a partially cutaway perspective view showing an example of a storage case, and FIG. 11 and FIG. 12 are airtight cases. FIG. 13 is a front view showing a conventional cleaning work table. . 11 Work table body, 12 Work space, 16 Work space opening, 18 Airtight case, 20 Equipment, 23 Communication opening, 24 Leakage prevention means ( Shutter), 26, 27
... locking means, 28-32 ... automatic opening and closing mechanism, 37-41 ... leakage prevention means.

Claims (1)

(57) [Claims] 1. A work space for handling harmful substances therein, clean air supply means for supplying clean air to the work space, exhaust gas purifying means for purifying exhaust air from the work space, and a work space for the work space. A workbench main body having an opening, an airtight case having an airtight door and detachably provided in the workbench main body to transport equipment stored therein, and the opening of the workbench main body A communication opening formed at a different position from the work space and communicating with the outside of the working space and having a shape capable of inserting the airtight case, air provided in the communication opening is provided through the communication opening through the communication opening. Leakage prevention means for preventing leakage to the outside of the work space, and at a position where the hermetic door can be opened and closed within the worktable main body when the hermetic door side of the hermetic case is inserted into the communication opening. Work on the airtight case Cleaning worktable, characterized by comprising and a locking means for locking the body.