JP5363891B2 - Work hood and work box equipped with the work hood - Google Patents

Description

  The present invention relates to a work hood used for work in an environment where air cleanliness is required and for isolating an operator from the environment.

  In the work in the manufacturing stage or research and development stage of pharmaceuticals, an environment with high air cleanliness such as a sterile room and a dust-free room is required. In addition, operations such as filling a sterile container with a pharmaceutical product are often performed manually, and a work box managed in a sterile or dust-free state is employed to prevent contamination of the work environment by the operator. The On the other hand, in the work for handling substances harmful to the human body, a work box managed in a containment state is employed to protect the worker. In these work boxes, a glove box method in which an operator works from the outside of the work box through a glove, or an operator works by protruding the upper body into the work box through a work hood such as a half suit. The work hood method is used.

  For work using the glove box method, a part of the wall of the work box is made of a transparent glass panel, and a glove is attached to the transparent wall, so that the worker can enter the work box through the transparent wall from the outside of the work box. It is possible to work in the work box through the glove while visually recognizing. However, in this glove box system work, the work range is limited and the position of the glove is fixed, so that the movement of the operator's arm is restricted and workability is not sufficient.

  On the other hand, in the work by the work hood method such as a half suit, the worker wears the half suit from the outside of the work box. Since the worker who wears this half suit can work in a state where the upper body protrudes into the work box, workability is further improved as compared with work performed through a glove.

  As a work box for performing work through such a half suit, for example, in Patent Document 1 below, a half suit formed from a material having non-breathability and flexibility is provided so as to protrude into a sterile chamber. Aseptic filling and packaging devices have been proposed.

  Here, the half suit is made of a flexible material, for example, a rubber material, a vinyl chloride resin, and the like. The half suit is flexible and improves workability, but easily adheres to the operator's body. In particular, in order to prevent contamination of the work box from the external environment, in a sterile or dust-free condition in which the air pressure in the work box is maintained higher than the external air pressure, the half suit is worn by the operator by the air pressure in the work box. It becomes easier to adhere to the body.

JP-A-11-208623

  By the way, in the half suit used in the aseptic filling and packaging apparatus described in Patent Document 1, when the half suit is in close contact with the body of the worker as described above, the worker has difficulty in breathing in the half suit. Moreover, the humidity in the half suit increases due to the breathing of the worker. If it does so, the visual recognition window provided in the half suit will become cloudy, it will become impossible for an operator to visually recognize the inside of a work box correctly, and there existed a problem that workability | operativity will be reduced significantly.

  Therefore, in order to solve this problem, an airline suit is adopted in which clean air from the blower is always sent into the half suit via an air hose. However, this air line suit has a problem that it is necessary to install a blower and connect the air hose to the half suit, the structure of the apparatus becomes complicated, and workability is hindered. The half suit has a bag-like structure for covering the upper body of the worker, and is easy to be attached to the body when the worker removes the half suit. There has been a problem that the work such as dust removal is complicated.

  Therefore, the present invention addresses the above-described problems, does not require equipment such as a blower, has a simple structure, has a wide work area in the work box, and ensures high workability. In addition, an object of the present invention is to provide a work hood in which the work hood can be easily attached and detached, and work such as sterilization, sterilization, or dust removal inside the work hood can be easily performed. Furthermore, an object of this invention is to provide the work box provided with the said work hood.

  In solving the above-mentioned problems, the present inventors, as a result of diligent research, did not deteriorate the workability even when the back part of the work hood was opened to the external environment, and the cleanliness of the front part of the work hood was sufficient. As a result, it was found that the object of the present invention can be achieved, and the present invention was completed.

That is, according to the description of claim 1, the work hood according to the present invention is
An inner peripheral edge formed by connecting both base ends spaced apart on both the left and right sides so as to form a convex shape upward from the both base ends and forming a U-shape upward from the both base ends. the main frame portion having a (20a), and said both with extending so as to form a convex shape in front of the both base ends by connecting the both proximal end of the main frame portion (20a) A frame body (20) comprising a sub-frame portion (20b) having an inner peripheral edge portion formed in an arc shape forward from the base end portion ;
A protruding wall portion (31) extending from the main frame portion (20a) and the sub-frame portion (20b) and forming a convex shape forward from the main frame portion (20a), the protruding wall portion (31) The left cylinder part (32) extended from the up-down direction intermediate part of the left side part and the right cylinder part (33) extended from the up-down direction intermediate part of the right part of the protruding wall part (31). And a work hood body (30)
The protruding wall portion (31) includes an upper seat (31a), left and right side seats (31b, 31c), and a front side seat (31d), and at least each extension of the left and right side tubular portions (32, 33). The protruding wall (31) is formed transparently at a portion between the base end portions. The protruding wall portion (31) includes an upper edge portion of the upper sheet (31a), a left edge portion of the left sheet (31b), and the right sheet ( 31c) is fixed to the U-shaped inner peripheral edge of the main frame (20a) at the right edge, and at the lower edge of the front seat (31d), the sub-frame It is fixed to the inner peripheral edge formed in the arc shape of the part (20b),
A glove (34, 35) is detachably attached to each extended distal end portion of the left and right cylindrical portions (32, 33).

  The work hood having the above-described configuration is used in a work box in which an operator inserts the upper body into a work area that is sterile, dust-free, or contained. In this case, the work hood configured as described above has a flexible work hood main body fixed to the frame, and the frame is attached to the wall of the work box.

  Here, the frame body is composed of a main frame portion and a sub-frame portion, and the main frame portion is formed in an upwardly convex shape so as to cover the head and torso of the worker. The side shape is connected to the lower end of the part in an L shape, and is formed in a shape protruding forward from the lower end of the main frame.

  On the other hand, the work hood main body is provided so as to protrude into the work box in a state where the projecting wall part for inserting the head and the body part of the operator is fixed to the main frame part and the sub-frame part. The projecting wall portion is provided with left and right side cylinder portions that project into the work box so that the operator inserts both arms, and work gloves are attached to the respective front end portions of the left and right side cylinder portions.

  The work hood having the above-described configuration is provided so that the main frame portion is hermetically attached to an opening portion opened in the peripheral wall portion of the work box, and the sub-frame portion protrudes into the work box. Here, when the work box is a completely sealed work box with high airtightness such as an isolator device, the sub-frame part of the work hood is part of the bottom wall part of the work box. Is hermetically attached to the opening.

  On the other hand, when the work box is a work box whose lower part is opened as in the RABS (Access Restriction Barrier System), the sub-frame part of the work hood projects into the work box in the work room. It may be in an open state as with the lower part. In this case, a wall surface material that covers the legs of the operator may be provided below the sub-frame portion of the work hood.

  In such a structure, the worker inserts the upper body into a protruding wall portion protruding into the work box from the outside of the work box. At this time, the worker can insert the upper body from the position of the main frame portion (position of the peripheral wall portion of the work box) to the front end portion of the sub-frame portion formed in a convex shape in the work box. Accordingly, the operator can insert substantially the entire upper body into the work box.

  In this state, the operator inserts both arms into the left and right side cylinder parts and wears gloves attached to the ends of the left and right side cylinder parts. Further, a transparent portion of the protruding wall portion is opposed to the face portion of the worker inserted into the protruding wall portion, and the operator wears a glove while visually checking the inside of the work box from the transparent portion. Work.

  Here, the work hood main body is formed of a flexible material, and the operator can freely move the upper body and both arms within the work box. As a result, even when the operator performs the work while wearing the work hood, the worker can ensure a wide work area and high workability that are not different from the work by a conventional work hood such as a half suit. .

  In addition, the work hood having the above structure has a simple structure, and the back surface of the worker is open to the outside of the work box. Therefore, the work hood having the above-described configuration does not require special equipment such as a blower unlike a conventional work hood such as a half suit, and the operator can easily attach and detach the work hood. Furthermore, from the structure in which the back portion of the work hood is opened, operations such as sterilization, sterilization, and dust removal inside the work hood can be easily performed.

Further, according to the above-described configuration, the main frame portion are formed of the inner peripheral edge portion in a U-shape, it is attached airtightly to the opening opened in the peripheral wall of the work box. In contrast, the sub-frame portion has an inner peripheral edge portion formed in an arc shape and is provided so as to protrude into the work box. Further, the protruding wall portion of the work hood main body is composed of four pieces of sheets, and each of the four pieces of sheets has a U-shaped inner peripheral edge portion and a sub-frame portion of the main frame portion at the peripheral edge portion thereof. Are hermetically fixed to the arc-shaped inner peripheral edge.

  Thus, the airtightness between the frame body 20 and the work hood main body 30 can be sufficiently secured, and the operator who has inserted the upper body into the projecting wall projecting into the work box has protruded into the work box. The upper body can be inserted into the arcuate inner peripheral edge of the sub-frame. Accordingly, the operator can insert substantially the entire upper body into the work box.

According to the description of claim 2 , the present invention is the work hood according to claim 1 ,
A frame (40) for supporting the frame (20) from below;
A moving caster (41) is provided at the lower end of the gantry (40).

  The work hood having the above-described configuration is used inside a clean room that maintains a specific environment such as a sterile state or a dust-free state. In the clean room, since workers are working directly, it is impossible to completely eliminate human contamination. Therefore, the air flow in the clean room is set as a one-way flow, and an area where the operator does not work directly is distinguished as a critical zone, and the work hood having the above-described configuration is adopted in the critical zone.

In the said structure, the frame of the work hood of Claim 1 is supported by the mount frame from the downward direction in the work hood. In addition, a moving caster for moving on the floor surface is provided at the lower end of the gantry.

  In the work hood configured as described above, an operator wearing an aseptic garment inside a clean room or the like inserts the upper body from the back surface of the work hood main body toward the protruding wall. At this time, the operator can insert the upper body from the position of the main frame portion to the front end portion of the sub-frame portion formed in a convex shape forward. Therefore, the operator can cover substantially the entire upper part, front part, and both side parts of the upper body with the work hood body.

  In this state, the operator inserts both arms into the left and right tube portions and wears gloves attached to the ends of the left and right tube portions. In addition, the face portion of the worker inserted into the protruding wall portion is opposed to a transparent portion of the protruding wall portion, and the operator can visually recognize the critical zone in the clean room from the transparent portion. Work can be done through the glove.

  In addition, the work hood having the above-described configuration can be moved in the clean room with the work hood attached by a moving caster provided at the lower end of the gantry. Therefore, in the front position of the work hood, it is possible to maintain a critical zone that requires particularly cleanliness even in a clean room. Thus, the operator can move in the clean room with the flexible work hood main body in the upper body, so that a wider work area and higher workability can be ensured.

  In addition, the work hood having the above structure has a simple structure, and the back surface of the operator is opened. Therefore, in the work hood having the above-described configuration, the operator can easily remove and install the work hood, and can easily perform operations such as sterilization, sterilization, and dust removal inside the work hood.

Therefore, also in the invention of the second aspect , the same effect as that of the first aspect of the invention can be achieved.

According to the description of claim 3 , the work box according to the present invention is
In a work box (50, 50a) comprising a chamber (51, 51a) and a work hood (10),
The work hood (10) is the work hood (10) according to claim 1 ,
The work hood (10) is provided in the opening (53, 53a, 59a) formed in the wall (52, 52a, 58a) of the chamber (51, 51a) through the frame (20). It is characterized by.

In the work box configured as described above, the work hood according to claim 1 is employed. Therefore, in this work box, the same effect as that of the invention described in claim 1 can be achieved.

  Therefore, it does not require equipment such as a blower, is equipped with a work hood having a simple structure, has a wide work area in the work box, ensures high workability, and is easy to detach and attach the work hood. It is possible to provide a work box including a work hood that can easily perform operations such as sterilization, sterilization, and dust removal inside the work hood.

  Here, in the present invention, the work box is to be interpreted in a broad sense, and includes all equipment, devices, or the work room itself that performs work in the work room from outside the work room via the work hood. To do. For example, aseptic chambers and aseptic isolator chambers that perform aseptic work, dust-free and dust-free isolator chambers that perform dust-free operations, and work that handles substances harmful to the human body inside the work chamber In a containment chamber or containment isolator device, a working room in a RABS (access restriction barrier system) that ensures aseptic or dust-free air flow in one direction, or work in harsh temperature conditions, etc. In a working room or the like that performs the above, a work hood that allows an operator to insert the upper body into the working room to work.

  Accordingly, the work box in the present invention includes a large number of work boxes from a work box that requires strict airtightness such as indoor air cleanliness and containment to a workbox that only needs to satisfy a low degree of airtightness.

  In addition, the code | symbol in the bracket | parenthesis of each said means shows the correspondence with the specific means as described in each embodiment mentioned later.

1 is a front view showing a first embodiment of a work hood according to the present invention. It is a left view of the work hood in the said 1st Embodiment. It is a right view of the work hood in the said 1st Embodiment. It is a rear view of the work hood in the said 1st Embodiment. It is a top view of the work hood in the said 1st Embodiment. It is a bottom view of the work hood in the said 1st Embodiment. It is 2nd Embodiment of the work box which concerns on this invention, Comprising: It is a schematic diagram showing the state which employ | adopted the work hood of the said 1st Embodiment for RABS (access restriction barrier system). It is 3rd Embodiment of the work box which concerns on this invention, Comprising: It is a schematic diagram showing the state which employ | adopted the work hood of the said 1st Embodiment for the isolator apparatus. It is a front view which shows 4th Embodiment of the work hood which concerns on this invention. It is a left view of the work hood in the said 4th Embodiment. It is a right view of the work hood in the said 4th Embodiment. It is a rear view of the work hood in the said 4th Embodiment. It is a top view of the work hood in the said 4th Embodiment. It is a bottom view of the work hood in the said 4th Embodiment.

Hereinafter, the present invention will be described with reference to embodiments.
(First embodiment)
1st Embodiment of the work hood which concerns on this invention is described based on drawing (refer FIGS. 1-6). The work hood 10 includes a frame body 20 and a work hood main body 30 fixed to the frame body 20. The frame 20 includes a main frame portion 20a and a sub-frame portion 20b whose side surface shape extends in an L shape from the lower end portion of the main frame portion 20a (see FIGS. 1 to 4).

  The main frame portion 20a includes a first frame member 21 positioned at the upper portion of the frame body 20, and left and right side second frame members 22 and 23 extending downward from the left and right end portions of the first frame member 21. It is configured. In the main frame portion 20a, the first frame member 21 and the left and right side second frame members 22 and 23 form three U-shaped sides protruding upward (see FIGS. 1 and 4).

  On the other hand, the sub-frame portion 20b includes a fourth frame member 26 positioned in front of the lower portion of the frame body 20, and left and right ends extending from left and right end portions of the fourth frame member 26 toward the lower end portions of the main frame portion 20a. It is comprised from the both side 3rd frame materials 24 and 25 and the upper surface coating | coated board 27 which covers the upper surface of each of these frame materials. In the sub-frame portion 20b, the left and right side third frame members 24 and 25 and the fourth frame member 26 form three U-shaped sides protruding forward (see FIGS. 5 and 6), while the upper surface covering. The plate 27 is in contact with the three sides of the U-shape, and the arc-shaped opening from the respective extended end portions on the main frame portion 20a side of the left and right third frame members 24, 25 toward the central portion of the fourth frame member 26 (See FIG. 5).

  The left second frame member 22 of the main frame portion 20a and the left third frame member 24 of the sub frame portion 20b, and the right second frame member 23 of the main frame portion 20a and the right third frame member 25 of the sub frame portion 20b are: The main frame portion 20a and the sub-frame portion 20b are connected to each other in an L shape (see FIGS. 2 and 3).

  When the work hood of the first embodiment is attached to the work box, the main frame part 20a is provided in an opening that opens in the peripheral wall part of the work box, and the sub-frame part 20b is a lower end part of the main frame part 20a. To extend into the work box.

  The work hood main body 30 protrudes forward in a convex shape from the main frame portion 20a of the frame body 20 so as to cover the upper surface, front surface, and left and right side surfaces of the upper body including the head and torso of the operator. It is comprised from the wall part 31 and the right-and-left both-side cylinder parts 32 and 33 which protrude toward the front from the right-and-left both sides site | part of this protrusion wall part 31, and cover an operator's both arms (refer FIGS. 1-4). .

  The protruding wall portion 31 is composed of four pieces of flexible sheets of an upper sheet 31a, a left sheet 31b, a right sheet 31c, and a front sheet 31d (see FIG. 1). The lower edge of the upper sheet 31a is airtightly joined to the upper edge of the front sheet 31d, and the left edges of the joined upper sheet 31a and front sheet 31d are the right edges of the left sheet 31b, respectively. It is airtightly joined to the part. Similarly, the right side edges of the joined upper sheet 31a and front sheet 31d are airtightly joined to the left edge of the right sheet 31c, respectively (see FIGS. 2 and 3).

  The upper edge of the upper sheet 31 a of the protruding wall 31, the left edge of the left sheet 31 b, and the right edge of the right sheet 31 c are from the first frame member 21, the left second frame member 22, and the right second frame member 23. To each of the U-shaped main frame portions 20a. On the other hand, the lower edge of the front sheet 31d is airtightly fixed to the arc-shaped inner peripheral edge of the opening formed by the upper surface covering plate 27.

  The left cylinder portion 32 is hermetically fixed so as to protrude leftward with the base end portion communicating with an opening portion opened in an intermediate portion in the vertical direction of the left seat 31b. On the other hand, the right cylinder portion 33 is airtightly fixed so as to protrude forward rightward with the base end portion communicating with an opening portion opened in an intermediate portion in the vertical direction of the right seat 31c.

  A front and rear circular see-through window 36 made of a transparent vinyl chloride plate is provided at a portion from the center of the front seat 31d to the upper side so that the operator can visually recognize the inside of the work box. Resin gloves 48 and 35 are attached to the respective distal end portions of the left and right cylindrical portions 32 and 33 in an airtight and detachable manner.

  Here, the work hood main body 30 only needs to be formed of a flexible material in order to ensure the workability of the operator, and this flexible material is not particularly limited, but the first embodiment. The upper sheet 31a, the left sheet 31b, the right sheet 31c, and the left and right side cylinder portions 34, 35 are made of tarpaulin material in which a resin film is laminated on a long fiber fabric.

  For example, when the work box to which the work hood is attached is an aseptic room, the air pressure in the work room is set higher than the air pressure in the external environment in order to prevent contamination in the work box. When the work hood is attached to such a work box, the work hood is pushed out of the work box due to the air pressure in the work box, which may impair workability. Thus, in such a case, it is preferable to employ the above tarpaulin material as a tough material having flexibility against air pressure, although it is flexible and does not impair the workability of the operator.

  On the other hand, in the first embodiment, a transparent vinyl chloride sheet is employed for the front sheet 31d. This is adopted from the viewpoint of ensuring the visibility of the operator even in parts other than the see-through window 36.

  The work hood of the first embodiment configured as described above has a simple structure. This makes it easy to manufacture the work hood and easily attach it to the work box. Further, in the work hood of the first embodiment, since the operator can work with the upper body protruding into the work box, the workability is further improved compared to the work by the glove box method, Similar to the conventional half-suit work, the work area in the work box is wide, and high workability can be ensured.

Furthermore, in the work hood of the first embodiment, since the back surface of the worker is open, it is not necessary to install a blower and connect the air hose to the work hood. Easy to breathe. As a result, the viewing window provided in the work hood is not clouded by the humidity resulting from the worker's breathing. In addition, the fact that the back surface of the operator is open facilitates the detachment of the work hood, and the work such as sterilization, sterilization, or dust removal inside the work hood can be easily performed.
(Second Embodiment)
Next, 2nd Embodiment of the work box based on this invention is described based on drawing. In the second embodiment, the work hood of the first embodiment is applied to a RABS (access restriction barrier system) for performing work while maintaining aseptic conditions in the work box. As shown in FIG. 7, in the RABS, a work box 50 isolated from the surroundings is provided in the clean room 60.

  Air supply devices 61 and 62 for supplying clean air into the clean room 60 are provided at the ceiling of the clean room 60 to form a support area in the RABS (access restriction barrier system). In the support area of the clean room 60, an operator 63 wearing clean clothes is working.

  The work box 50 shares a ceiling portion with the clean room 60, and has a chamber 51 composed of the ceiling portion and a peripheral wall portion 52 extending downward from the ceiling portion, and an opening in the peripheral wall portion 52 of the chamber 51. The work hood 10 attached to the opening 53 is provided.

  The chamber 51 is provided with an air supply device 55 at a ceiling portion thereof, and a work table 56 and a work device 57 placed on the work table 56 are installed in the chamber 51. The air supply device 55 provided in the ceiling portion of the chamber 51 supplies clean air into the chamber 51, and this clean air flows as a one-way flow from the top to the bottom. The one-way clean air supplied from the air supply device 55 is exhausted to the clean room 60 from the release portion 54 provided below the peripheral wall portion 52 of the chamber 51. As described above, in the RABS (access restriction barrier system), air cleanliness higher than that of the clean room 60 is maintained by the one-way clean air flowing in the chamber 51.

  Here, the work hood 10 is attached to the peripheral wall part 52 of the chamber 51 by the main frame part 20 a of the frame body 20, and the work hood 10 places the sub-frame part 20 b of the frame body 20 inside the chamber 51. It protrudes toward. The work hood main body 30 of the work hood 10 is provided so as to extend from the frame body 20 and protrude toward the inside of the chamber 51. Here, a wall surface material 20c that covers the legs of the operator is attached to the lower portion of the sub-frame portion 20b of the work hood 10, and this wall surface material 20c is connected to the lower end of the peripheral wall portion 52 of the chamber 51 from the sub-frame portion 20b. It is provided in between.

  Here, the worker 63 in the clean room 60 inserts the upper body into the work hood main body 30 of the work hood 10 from the clean room 60, and is attached to both the cylindrical portions 32 and 33 of the work hood main body 30 and the tip thereof. The work in the chamber 51 can be performed through the globes 34 and 35.

  As described above, in the RABS (Access Restriction Barrier System) described in the second embodiment, the operator can work with the upper body protruding into the chamber. And high workability can be ensured.

Furthermore, in the second embodiment, the work hood attached to the chamber has an open back surface of the operator, so that the viewing window provided on the work hood does not become cloudy. In addition, the fact that the back surface of the operator is open facilitates the detachment of the work hood, and the work such as sterilization, sterilization, or dust removal inside the work hood can be easily performed.
(Third embodiment)
Next, 3rd Embodiment of the work box based on this invention is described based on drawing. In the third embodiment, the work hood of the first embodiment is applied to a sterile isolator device. As shown in FIG. 8, the aseptic isolator device 50a according to the third embodiment includes a gantry 51b placed on the floor, a chamber 51a laid on the gantry 51b, and a peripheral wall portion of the chamber 51a. The work hood 10 attached to 52a is provided.

  The chamber 51a includes an intake / exhaust device (not shown) that sucks and exhausts air in the chamber 51a via a HEPA filter (not shown), and maintains the sterility in the chamber 51a. The air pressure is maintained higher than the outside air pressure. A work device 57a is placed inside the chamber 51a.

  Here, the work hood 10 is hermetically attached to the opening 53a opened in the peripheral wall part 52a of the chamber 51a by the main frame part 20a of the frame body 20, while the work hood 10 is attached to the frame body 20 thereof. The sub-frame portion 20b is airtightly attached to the opening portion 59a opened in the bottom wall portion 58a of the chamber 51a. Further, the work hood main body 30 of the work hood 10 is provided so as to extend from the main frame portion 20a and the sub-frame portion 20b of the frame body 20 and protrude toward the inside of the chamber 51a.

  Here, the worker 63a located outside the chamber 51a inserts the upper body into the work hood main body 30 of the work hood 10 from the outside of the chamber 51a, and both the cylindrical portions 32 and 33 of the work hood main body 30 and their tips. The work in the chamber 51a can be performed through the gloves 34 and 35 attached to the part.

  As described above, in the sterile isolator device described in the third embodiment, since the operator can work with the upper body protruding into the chamber, the work area in the chamber is wide, and High workability can be ensured.

Furthermore, in the third embodiment, the work hood attached to the chamber has an open back surface of the operator, so that the viewing window provided on the work hood does not become cloudy. In addition, the fact that the back surface of the operator is open facilitates the detachment of the work hood, and the work such as sterilization, sterilization, or dust removal inside the work hood can be easily performed.
(Fourth embodiment)
Next, a fourth embodiment of a work hood according to the present invention will be described with reference to the drawings (see FIGS. 9 to 14). The fourth embodiment relates to a movable work hood used in a clean room such as a sterile room.

  The work hood 10 a includes a frame 20, a work hood main body 30 fixed to the frame 20, a gantry 40 that supports the frame 20 from below, and a moving caster provided at the lower end of the gantry 40. 41. Similar to the first embodiment, the frame body 20 includes a main frame portion 20a and a sub-frame portion 20b whose side surface shape extends in an L shape from the lower end portion of the main frame portion 20a ( 9 to 12).

  The main frame portion 20a includes a first frame member 21 positioned at the upper portion of the frame body 20, and left and right side second frame members 22 and 23 extending downward from the left and right end portions of the first frame member 21. It is configured. In the main frame portion 20a, the first frame member 21 and the left and right second frame members 22 and 23 form three U-shaped sides that protrude upward (see FIGS. 9 and 12).

  On the other hand, the sub-frame portion 20b includes a fourth frame member 26 positioned in front of the lower portion of the frame body 20, and left and right ends extending from left and right end portions of the fourth frame member 26 toward the lower end portions of the main frame portion 20a. It is comprised from the both side 3rd frame materials 24 and 25 and the upper surface coating | coated board 27 which covers the upper surface of each of these frame materials. In the sub-frame portion 20b, the left and right side third frame members 24, 25 and the fourth frame member 26 form three U-shaped sides protruding forward (see FIGS. 13 and 14), while the upper surface covering. The plate 27 is in contact with the three sides of the U-shape, and the arc-shaped opening from the respective extended end portions on the main frame portion 20a side of the left and right third frame members 24, 25 toward the central portion of the fourth frame member 26 (See FIG. 13).

  The left second frame member 22 of the main frame portion 20a and the left third frame member 24 of the sub frame portion 20b, and the right second frame member 23 of the main frame portion 20a and the right third frame member 25 of the sub frame portion 20b are: The main frame portion 20a and the sub-frame portion 20b are connected to each other in an L shape (see FIGS. 10 and 12).

  The work hood main body 30 protrudes forward in a convex shape from the main frame portion 20a of the frame body 20 so as to cover the upper surface, front surface, and left and right side surfaces of the upper body including the head and torso of the operator. It is comprised from the wall part 31 and the right-and-left both-side cylinder parts 32 and 33 which protrude toward the front from the right-and-left both sides site | part of this protrusion wall part 31, and cover an operator's both arms (refer FIGS. 9-12). .

  The protruding wall portion 31 is composed of four pieces of flexible sheets of an upper sheet 31a, a left sheet 31b, a right sheet 31c, and a front sheet 31d (see FIG. 9). The lower edge of the upper sheet 31a is airtightly joined to the upper edge of the front sheet 31d, and the left edges of the joined upper sheet 31a and front sheet 31d are the right edges of the left sheet 31b, respectively. It is airtightly joined to the part. Similarly, the right side edges of the joined upper sheet 31a and front sheet 31d are airtightly joined to the left edge of the right sheet 31c, respectively (see FIGS. 10 and 12).

  The upper edge of the upper sheet 31 a of the protruding wall 31, the left edge of the left sheet 31 b, and the right edge of the right sheet 31 c are from the first frame member 21, the left second frame member 22, and the right second frame member 23. To each of the U-shaped main frame portions 20a. On the other hand, the lower edge of the front sheet 31d is airtightly fixed to the arc-shaped inner peripheral edge of the opening formed by the upper surface covering plate 27.

  The left cylinder portion 32 is hermetically fixed so as to protrude leftward with the base end portion communicating with an opening portion opened in an intermediate portion in the vertical direction of the left seat 31b. On the other hand, the right cylinder portion 33 is airtightly fixed so as to protrude forward rightward with the base end portion communicating with an opening portion opened in an intermediate portion in the vertical direction of the right seat 31c.

  A front and rear circular see-through window 36 made of a transparent vinyl chloride plate is provided at a portion from the center of the front seat 31d to the upper side so that the operator can visually recognize the inside of the work box. Resin gloves 48 and 35 are attached to the respective distal end portions of the left and right cylindrical portions 32 and 33 in an airtight and detachable manner.

  Here, in the fourth embodiment, as in the first embodiment, a resin film is laminated on a long fiber fabric on the upper sheet 31a, the left sheet 31b, the right sheet 31c, and the left and right cylindrical portions 34 and 35. A tarpaulin material is used, while a transparent vinyl chloride sheet is used for the front sheet 31d.

  The gantry 40 connects the four support columns 42, 43, 44, 45 in the vertical direction to support the sub-frame portion 20b of the frame body 20 from below and the four support columns 42, 43, 44, 45 at the lower side. It consists of three horizontal bars 46, 47, and 48.

  In the fourth embodiment, the sub-frame portion 20a of the frame body 20 and the mount 40 are joined as follows. In each of the U-shaped corner portions formed by the sub-frame portion 20b of the frame 20, struts 42 and 43 are connected to the left and right end portions of the fourth frame member from below, and the other of the third frame members on both the left and right sides is connected. Supports 44 and 45 are connected to the end from below to support the frame 20 from below. In addition, a horizontal beam 48 is located below the fourth frame member of the sub-frame portion 20b, and is connected to the lower ends of the columns 42 and 43 at the left and right ends of the horizontal beam 48 in an L shape. Yes. Horizontal bars 46 and 47 are positioned below the third frame members on both the left and right sides of the sub-frame part 20b. The horizontal bars 46 and 47 extend in L-shape from the left and right ends of the horizontal bars 48 and are extended at the extended ends. The lower ends of the columns 44 and 45 are connected in an L shape.

  Accordingly, the three horizontal rails 46, 47, and 48 have the same shape as the U-shape formed by the sub-frame portion 20b of the frame 20, and are formed below the sub-frame portion 20b. . Therefore, the three horizontal bars 46, 47, 48 having a U-shape extend in a convex shape in the same manner as the sub-frame portion 20b, and the operator attaches the upper body to the sub-frame portion 20b. The operator can advance the position to the position of the fourth frame member, and the operator can advance the leg portion to the position of the crosspiece 48. In addition, in this 4th Embodiment, although the wall surface material which covers the front surface of a worker's leg part inserted in the inner site | part of the mount frame 40, and the both right and left side surfaces is not employ | adopted, you may make it employ | adopt this. .

  The four moving casters 41 are provided at each of the U-shaped corner portions formed by the three horizontal rails 46, 47, 48 at the lower end of the gantry 40. As a result, the work hood 10a can move in the clean room while being supported by the gantry 40.

  Here, the worker in the clean room can insert the upper body into the work hood main body 30 of the work hood 10 a, and the worker can insert the leg portion into the space formed in the inner portion of the gantry 40. In this state, the worker moves in the clean room to reach a predetermined position, and at this position, the worker places both the cylindrical portions 32 and 33 of the work hood main body 30 and the glove 34 attached to the tip portion thereof. , 35 can be used to perform work in the clean room. In this way, the worker can work in a clean room while maintaining the critical zone that requires the highest degree of cleanliness.

  The work hood of the fourth embodiment configured as described above has a simple structure, and the operator can move in the clean room with the upper body inserted in the work hood. Therefore, the work area in the clean room is wide and high workability can be ensured.

  Furthermore, in the work hood of the fourth embodiment, since the back surface of the worker is opened, the worker can easily remove and remove the work hood, and the sterilization, sterilization, or dust removal inside the work hood. Etc. can be easily performed.

In carrying out the present invention, not only the above-described embodiments but also the following various modifications can be mentioned.
1. In each of the above embodiments, the upper surface covering plate 27 is provided on the upper surface of the sub-frame portion 20b, and the front sheet 31d of the protruding wall portion 31 is fixed to the arc-shaped inner peripheral edge of the upper surface covering plate 27. The front sheet 31d may be directly fixed to the U-shaped frame member of the sub-frame portion 20b without providing the upper surface covering plate 27.
2. In each of the above embodiments, a combination of a tarpaulin material and a transparent vinyl chloride sheet is adopted as a material for the work hood main body 30, but the present invention is not limited to this, and any flexible material can be used. You may make it employ | adopt a material. For example, in a containment isolator device in which the air pressure in the work box is maintained at a low pressure relative to the air pressure in the external environment, the work hood main body 30 is made of only a more flexible material, for example, a transparent vinyl chloride sheet. Also good. In the case of such a containment isolator device, the work hood main body 30 is always pushed into the work box by the air pressure of the external environment, and even if the work hood main body 30 is formed of a flexible material, It is because it does not cling to the body.
3. In each of the above embodiments, a transparent vinyl chloride plate is adopted as the see-through window 36 formed in the work hood main body 30, but is not limited to this. For example, a transparent polycarbonate resin plate, a transparent polyester is used. You may make it employ | adopt a resin plate or a transparent glass plate.
4). In the second and third embodiments, the work hood is adopted for the RABS or the sterile isolator device that maintains the sterilized state. However, the working hood is not limited to the sterilized work box, and is dust-free or contained. It may be employed in a work box for other purposes.

  DESCRIPTION OF SYMBOLS 10, 10a ... Work hood, 20 ... Frame body, 20a ... Main frame part, 20b ... Sub-frame part, 21-26 ... Frame material, 30 ... Work hood main body, 31 ... Projection wall part, 31a-31d ... Sheet, 32 33 ... Cylinder part, 34, 35 ... Glove, 40 ... Stand, 41 ... Caster, 42, 43, 44, 45 ... Post, 46, 47, 48 ... Horizontal crosspiece, 50, 50a ... Work box, 51, 51a ... Chamber, 52, 52a, 58a ... wall, 53, 53a, 59a ... opening.

Claims (3)

An inner peripheral edge formed by connecting both base ends spaced apart on both the left and right sides so as to form a convex shape upward from the both base ends and forming a U-shape upward from the both base ends. And a main frame portion that extends from the both base end portions so as to form a convex shape forward from the both base end portions and forward from the both base end portions. A frame body composed of a sub-frame portion having an inner peripheral edge portion formed in an arc shape ;
A protruding wall portion extending from the main frame portion and the sub-frame portion to form a convex shape forward from the main frame portion, and a left cylinder portion extending from a vertical intermediate portion of a left side portion of the protruding wall portion And a flexible work hood main body comprising a right cylindrical portion extending from a vertical intermediate portion of the right portion of the protruding wall portion,
The protruding wall portion is composed of an upper sheet, left and right side sheets, and a front sheet, and is formed transparently at least at a portion between the extended base end portions of the left and right side cylindrical portions. Is fixed to the inner peripheral edge portion formed in a U-shape of the main frame portion at the upper edge portion of the upper sheet, the left edge portion of the left seat and the right edge portion of the right seat, and At the lower edge of the front sheet, it is fixed to the inner peripheral edge formed in the arc shape of the sub-frame part,
A work hood in which a glove is detachably attached to each extending tip of each of the left and right cylindrical portions. Comprising a frame for supporting the frame from below;
  The work hood according to claim 1, wherein a moving caster is provided at a lower end portion of the gantry. In a work box with a chamber and work hood,
  The work hood according to claim 1,
  This work hood is provided in an opening formed in the wall portion of the chamber through the frame body.

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