JP2016083591A - Arm insertion opening type hood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an arm insertion opening type hood which enables an operator to alleviate arm fatigue even during a stand-by time such as waiting for treatment when treating a workpiece by inserting the arm through an opening into a work space.SOLUTION: An arm insertion opening type hood 1 is provided with a vertically movable glass pane 7 that is front opening block means for blocking an opening in the front face of a work space SP with a transparent plate vertically (in the T direction) movable and window glass 19A and 19B which are cylindrical body moving means enabling the lateral (in the X direction) movement of a position of a cylindrical body 21 provided in the vertically movable glass pane 7 to insert an operator's arm into the work space SP, so that an extension part 40 that is the inner end of the cylindrical body 21 is so formed as to extend from the vertically movable glass pane 7 into the work space SP.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a so-called draft chamber and a hand-arm insertion opening type hood such as a clean bench for isolating a work space so that an operator is not affected by the work piece when the work piece is processed in the work space.

  This type of hand-arm insertion opening type hood is used when a workpiece placed in a work space, specifically, a worker or a room space when processing a workpiece such as chemicals or bacteria harmful to the human body or the environment. Therefore, the work space is isolated so as not to be affected by the workpiece.

  Therefore, the hand-arm insertion opening type hood can open and close the front opening of the work space with a transparent glass door. And when an operator processes a to-be-processed object, this opening-and-closing door is opened, an operator inserts a hand and arm from the front opening which the opening-and-closing door opened (patent document 1). See).

  Furthermore, in order to improve the sealing performance of the hand-arm insertion opening type hood, the operator completely closes the opening / closing door of the front opening, and puts the inside of the working space through rubber gloves attached to the opening provided in the opening / closing door. The workpiece is being processed.

Japanese Patent No. 2801864

  However, in a conventional hood, when a worker uses a rubber glove from the opening to process an object to be processed, the processing often takes time, and waiting time such as waiting for the processing is necessary. Therefore, there is a problem that the operator's skill becomes tired and the work is difficult.

  The present invention has been made in view of the above, and an object of the present invention is to wait such as waiting for processing when an operator puts his / her arm into the work space from the opening and processes the workpiece. An object of the present invention is to provide a hand-arm insertion opening type hood capable of reducing fatigue of hands and arms over time.

  In order to achieve the above object, a hand arm insertion opening type hood according to claim 1 includes a front opening closing means for closing the opening on the front surface of the work space with a transparent plate moving in the vertical direction, and the front opening closing means. Provided with a cylindrical body moving means for moving the position of the cylindrical body for inserting the operator's hand and arm into the working space in the left-right direction, and the inner end of the cylindrical body, The arm of the operator inserted into the cylindrical body can be held.

  In the hand-arm insertion opening type hood according to claim 1, since the inner end portion of the cylindrical body can hold the arm of the operator inserted into the cylindrical body, the worker can move the inner end portion of the cylindrical body. You can rest with your hands and arms. For this reason, when the operator puts his / her arms into the work space from the opening and processes the workpiece, his / her fatigue can be reduced even during a waiting time such as waiting for processing.

  In the hand arm insertion opening type hood according to claim 2, the front opening opening means for closing the opening on the front surface of the work space by a transparent plate, and the front opening closing means are provided in the front opening closing means, so A cylindrical body for inserting a hand, and the cylindrical body is disposed at an insertion opening for inserting a hand arm into the work space, and at a position where at least the arm is placed in the insertion opening. And a cushioning material.

  In the hand-arm insertion opening type hood according to claim 2, even if the cylindrical body is made of a hard material, the operator can more easily put his / her arm on the cushioning material during the waiting time. I can rest. Thereby, even if it is a long-time processing work, the worker can work comfortably with a more comfortable posture.

  In the hand-arm insertion opening type hood according to claim 3, the cylindrical body is formed such that an inner end portion of the cylindrical body extends from the front opening closing means to the working space. Features.

  In the hand-arm insertion opening type hood according to claim 3, the operator can rest by placing his / her arm on the cylindrical body. Thereby, the worker can reduce fatigue of hands (hands and arms) even in a standby time such as waiting for processing when processing an object to be processed using, for example, rubber gloves from the opening.

  In the hand-arm insertion opening type hood according to claim 4, the cylindrical body has flexibility.

  In the hand-arm insertion opening type hood according to claim 4, since the cylindrical body has flexibility, the operator can more easily perform the waiting time with the hand arm placed on the cylindrical body. You can rest your hands. Thereby, even if it is a long-time processing work, the worker can work comfortably with a more comfortable posture.

  In the hand-arm insertion opening type hood according to claim 5, the position of the cylindrical body has a position changing portion that can be adjusted and positioned along the vertical direction as well as the horizontal direction. .

  In the hand-arm insertion opening type hood according to the fifth aspect, the cylindrical body can be positioned by slightly changing the height position according to the work, so that workability is improved.

  The hand-arm insertion opening type hood according to claim 6 is provided on the front opening closing means for closing the opening on the front face of the working space with a transparent plate that moves in the vertical direction, and on the front opening closing means. It has a cylindrical body for inserting a worker's hand, and an open / close door provided at a lower portion of the front opening closing means and capable of opening and closing the work space.

  In the hand-arm insertion opening type hood according to claim 6, the operator can clean the inside of the work space, for example, the inner surface of the vertically movable glass plate, through the opening formed by opening only the opening / closing door. it can. In addition, various types of instruments and objects to be processed can be easily taken in and out of the work space through the opening generated by opening the door.

  According to the present invention, when an operator puts his / her arms into the work space from the opening and processes the workpiece, his / her arms can reduce his / her fatigue even in a standby time such as waiting for processing. An insertion opening type hood can be provided.

It is a perspective view which shows the whole structure of the hand arm insertion opening type | mold hood of 1st Embodiment of this invention. FIG. 2 is a perspective view showing a state where a vertically movable glass plate is removed from the hand-arm insertion opening type hood shown in FIG. It is a front view which shows the example of a shape of the glass plate which can be moved up and down. It is a figure which shows the cylindrical body vicinity of the hand arm insertion part of the vertically movable glass plate shown in FIG. It is a perspective view which shows the state which raised the up-and-down movable glass plate for a while in the T1 direction. It is a front view which shows the example of a cylindrical body. It is a perspective view which shows the example where rubber glove GB was attached to each cylindrical body. It is sectional drawing which shows the example of the shape of a cylindrical body, and the example by which the rubber glove GB is used. It is a figure which shows the up-and-down moving mechanism part for moving up and down the glass plate which can move up and down to a T direction along the guide rail part of a front plate. It is sectional drawing which shows 2nd Embodiment of this invention. It is sectional drawing which shows 3rd Embodiment of this invention. It is sectional drawing which shows 4th Embodiment of this invention. It is sectional drawing which shows 4th Embodiment of this invention. It is sectional drawing which shows 5th Embodiment of this invention. It is sectional drawing which shows 5th Embodiment of this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as embodiments) will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a perspective view showing an overall configuration of a hand-arm insertion opening type hood according to a first embodiment of the present invention. FIG. 2 is a perspective view showing a state in which the vertically movable glass plate 7 is removed from the hand-arm insertion opening type hood 1 shown in FIG.

  The hand-arm insertion opening type hood 1 shown in FIG. 1 is sucked from the rear upper side of a work space SP described later, for example, and then exhausted. For this reason, the work space SP of the hand-arm insertion opening hood 1 is maintained at a negative pressure, and the air in the work space SP is configured not to leak directly to the outside of the work space SP.

  As shown in FIG. 1, the hand-arm insertion opening type hood 1 has a vertically long and trapezoidal body cover 3 made of, for example, an aluminum frame, and a mounting table 150 covered with the body cover 3. . A front side 2 of the main body cover 3 is formed to be inclined, and a front opening 5 is formed on the front side 2 as shown in FIGS. 1 and 2. As shown in FIG. 2, the front opening 5 is formed in a rectangular shape.

  As shown in FIG. 1, the main body cover 3 is a shielding box for covering the periphery of the mounting table 150, and the main body cover 3 and the mounting table 150 are separate bodies. Since the main body cover 3 and the mounting table 150 are made separately, vibration generated on the main body cover 3 side is not transmitted to the mounting table 150 side.

  The mounting table 150 is a substantially rectangular parallelepiped base, and the upper surface portion is a flat mounting surface 151 for mounting a precise weighing meter such as a workpiece or a precision balance. The main body cover 3 is self-supporting by, for example, four legs 3M, and a mounting table 150 is accommodated inside the main body cover 3.

  The vertically movable glass plate 7 shown in FIG. 1 slides in the T direction along the front side 2 so that the front opening 5 can be opened and closed by the vertically movable glass plate 7. The T direction is a direction inclined at a predetermined angle with respect to the vertical direction. This vertically movable glass plate 7 is a front opening closing means for closing the opening on the front surface of the work space SP with a transparent plate moving in the vertical direction (T direction).

  The vertically movable glass plate 7 is formed of a transparent glass plate so that the worker can see the working space SP inside the vertically movable interior. In the state of the main body cover 3 shown in FIG. 1, the vertically movable glass plate 7 is moved to the lowest position and is completely closed, and the front opening 5 is closed. This vertically movable glass plate 7 may be colored (including vapor deposition) or divided in its entirety or in part.

  In addition, since the side part opening part 9 obstruct | occluded with the transparent glass plate is provided in the both sides of the main body cover 3, respectively, an operator sees the inside of working space SP through this side part opening part 9. be able to. Although not shown, a precise weighing device such as a workpiece BT or a weighing meter is placed on the placement surface 151 located in the work space SP.

  As shown in FIG. 2, when the vertically movable glass plate 7 is removed from the main body cover 3 of the hand-arm insertion opening type hood 1, the upper part of the front side 2 is the upper front plate 13 and the lower front plate 19R. Have The front plate 13 forms the upper side portion of the front opening 5, and the front plate 19 </ b> R forms the lower side portion of the front opening 5.

  On the front side 2, guide rail portions 13 </ b> A and 13 </ b> B are arranged at the left and right end positions of the front plate 13.

  These left and right guide rail portions 13A and 13B hold both end portions in the T direction of the vertically movable glass plate 7, and slide and position the vertically movable glass plate 7 so as to be movable along the T direction. It is a slide positioning means.

  As shown in FIGS. 1 and 2, the upper end portions 13T and 13R of the guide rail portions 13A and 13B are positioned higher than the upper surface portion 3T of the main body cover 3, and between the upper end portions 13T and 13R, The member 13H is fixed. By providing the horizontal member 13H, the guide rail portions 13A and 13B are reinforced. Moreover, the provision of the horizontal member 13H serves as an upper limit stopper when the vertically movable glass plate 7 is raised in the T1 direction along the guide rail portions 13A and 13B.

  FIG. 3 is a front view showing a shape example of the vertically movable glass plate 7. FIG. 4A is a perspective view showing the vicinity of the cylindrical body 21 of the hand-arm insertion portion 100 of the vertically movable glass plate 7 shown in FIG. FIG. 4B is a cross-sectional view taken along line AA illustrated in FIG.

  As shown in FIG. 3, the vertically movable glass plate 7 is a rectangular plate material. Two horizontally long oval openings 7A and 7B are provided at a position below the substantially central portion of the vertically movable glass plate 7 with an interval in the X direction. The vertically movable glass plate 7 includes an upper side portion 7T, a lower side portion 7L, a left side portion 7N, a right side portion 7M, and an exposed portion 7R, and further includes an upper window frame 15 and a lower window frame 16.

  The exposed portion 7 </ b> R is a part of the vertically movable glass plate 7 between the upper window frame 15 and the lower window frame 16. The left and right openings 7A and 7B are formed at an interval in the exposed portion 7R, and these openings 7A and 7B are formed as shown in FIG. Guide holes for guiding and positioning along the X direction which is the left-right direction.

  As shown in FIGS. 1 and 4A, the hand / arm insertion portion 100 of the vertically movable glass plate 7 includes an upper window frame 15 and a lower window frame 16. The upper window frame 15 and the lower window frame 16 are provided between the left and right guide rail portions 13A and 13B with an interval parallel to the X direction.

  Here, with reference to FIG. 1, FIG. 4, and FIG. 5, the two cylindrical bodies 21 and 21 and the window glasses 19A and 19B will be described. FIG. 5 is a perspective view showing a state where the vertically movable glass plate 7 is slightly lifted in the T1 direction.

  The two cylindrical bodies 21 and 21 shown in FIG. 1 and FIG. 4A are prepared for the right and left hands of the operator and have the same size. As shown in FIG. 4A, the window glasses 19A and 19B are also of the same size. Each of the window glasses 19A and 19B is a rectangular glass plate. The upper side 19C of each window glass 19A, 19B is fitted into the upper window frame 15, and the lower side 19D of each window glass 19A, 19B is fitted into the lower window frame 16.

  These window glasses 19A and 19B are provided on the vertically movable glass plate 7 which is a front opening closing means, and the positions of the cylindrical bodies 21 and 21 for inserting the left and right arms of the operator into the work space SP. It is a cylindrical body moving means which moves in the left-right direction (X direction) and can be positioned respectively.

  Accordingly, the window glasses 19A and 19B can be moved and positioned separately along the upper window frame 15 and the lower window frame 16 in the X direction. The upper side 19C and the lower side 19D of each window glass 19A, 19B, the upper window frame 15 and the lower window frame 16 are provided with rubber or resin packing, thereby increasing the air density. Yes.

  As shown in FIG. 5, when the vertically movable glass plate 7 is lifted in the T1 direction, the lower side portion 7L of the vertically movable glass plate 7 is lifted. Further, when the vertically movable glass plate 7 is lifted in the T1 direction, the lower side portion 7L of the vertically movable glass plate 7 is lifted away from the lower front plate 19R at the lower portion of the front side 2, so that the vertically movable glass is removed. A lower opening can be formed between the lower side 7L of the plate 7 and the lower front plate 19R. In this state, for example, cleaning of the work space SP, for example, cleaning of the inner surface of the vertically movable glass plate 7 can be performed through the lower opening. In addition, through the lower opening, various types of instruments and objects to be processed can be easily taken in and out of the work space SP.

  As shown in FIG. 3, the upper window frame 15 and the lower window frame 16 are formed such that the length in the X direction, which is the left-right direction, is longer than the length in the X direction of the vertically movable glass plate 7. On the left and right portions of the frame 15 and the lower window frame 16, a left side portion 7N and a right side portion 7M are provided in a part of the vertically movable glass plate 7. As shown in FIGS. 5 and 3, there is an exposed portion 7 </ b> R of the vertically movable glass plate 7 in the region between the upper window frame 15 and the lower window frame 16.

  As shown in FIGS. 5, 4A and 4B, the upper window frame 15 and the lower window frame 16 can be positioned by moving the two window glasses 19A and 19B in the X direction, respectively. Hold on. As shown in FIG. 4B, the cross-sectional shapes of the upper window frame 15 and the lower window frame 16 are, for example, substantially L-shaped. As illustrated in FIG. 4A and FIG. 4B, the upper window frame 15 holds the upper side portions 19C of the window glasses 19A and 19B, and the lower window frame 16 holds the windows 19A and 19B. The lower side 19D is held. Thus, the window glasses 19A and 19B can be moved and positioned along the X direction in the upper window frame 15 and the lower window frame 16, respectively.

  However, the window glasses 19A and 19B shown in FIG. 4A always block the oval openings 7A and 7B indicated by broken lines of the vertically movable glass plate 7, respectively. As a result, the window glasses 19A and 19B are slid along the X direction in a sliding door manner between the upper window frame 15 and the lower window frame 16 and moved closer to each other to the center position, or conversely moved away from each other. When it is pulled apart, a gap is not formed between the vertically movable glass plate 7 and the window glasses 19A and 19B. Thus, air is blocked from going back and forth between the work space SP shown in FIG. 1 and the outside.

  In addition, the attachment method of the upper window frame 15 and the lower window frame 16 in the vertically movable glass plate 7 can employ | adopt various methods, such as screwing, fitting, adhesion | attachment, for example, and is not specifically limited.

  Next, the cylindrical body 21 fixed to the window glasses 19A and 19B will be described with reference to FIGS. 6A and 6B are front views showing examples of the glass plates 19A and 19B and the cylindrical body 21. FIG.

  As shown in FIG. 6A, circular holes 19H are respectively formed in the window glasses 19A and 19B, and each cylindrical body 21 corresponds to each hole 19H with respect to the window glasses 19A and 19B. It is fixed at the position to be. Each cylindrical body 21 can be fixed to the window glass 19A, 19B by screwing, bonding or the like, but is not particularly limited.

  As shown in FIGS. 6 (A) and 4 (B), a substantially circular covering body 30 is disposed in each hole 19 </ b> H inside each tubular body 21. The covering body 30 is made of, for example, a silicon resin that is a thin material excellent in elastic deformability and flexibility so as to be easily elastically deformed when the operator's arm is inserted into the cylindrical body 21. . As a result, when the operator's arm is not inserted into the insertion opening of the cylindrical body 21, the covering body 30 moves between the work space SP shown in FIG. 1 and the outside. It has a role to block.

  In the example of the covering 30 shown in FIGS. 6A and 4B, for example, eight cuts 61 are formed, respectively, and eight fan-shaped portions 32 are provided. However, in the covering 30 shown in FIG. 6 (A), the formation direction of the cut 61 is formed in the T direction (vertical direction), but in another covering 30 shown in FIG. 6 (B), The cut 61 is formed so that the formation direction thereof does not overlap the T direction. Further, the number of cut lines 61 formed in the covering 30 is not particularly limited.

  Returning to FIG. 4, each cylindrical body 21 is provided so as to protrude both outside and inside the window glass 19 </ b> A, 19 </ b> B, and the operator's hand is put in the rubber glove GB and covered with the rubber glove GB. In this state, the arms and arms are inserted into the cylindrical body 21 with the rubber gloves GB, and the center position of the covering body 30 is pushed and spread with the arms and arms covered with the rubber gloves GB. As shown in FIG. Covered hands and arms can be inserted into the work space.

  FIG. 7 is a perspective view showing an example in which a rubber glove GB is attached to each cylindrical body 21. As shown in FIG. 7, the hand arm HD covered with the rubber gloves GB can be inserted into the work space SP through the oval opening 7A (7B) of the vertically movable glass plate 7. The worker can process the workpiece BT shown in FIG. 1 placed in the work space SP using the hand and arm HD covered with the inserted rubber glove GB.

  FIG. 8 is a cross-sectional view showing a shape example of the cylindrical body 21 and an example in which the rubber glove GB is used.

  A rubber glove GB shown in FIGS. 7 and 8 is a glove having a long sleeve, and has a sleeve portion 33 that is an open end portion and a finger covering portion 34. The tubular body 21 has an outer portion 41 and an extension portion 40 on the inner side. The outer portion 41 of the cylindrical body 21 is positioned outside the vertically movable glass plate 7, and the extended portion 40 on the inner side of the cylindrical body 21 is positioned inside the vertically movable glass plate 7. That is, the extended portion 40 is formed to extend toward the inner region of the vertically movable glass plate 7, that is, the work space SP side.

  By providing the extended portion 40 so as to extend toward the work space SP, the operator places his / her arm on the extended portion 40 of the cylindrical body 21 as well as the outer portion 41 of the cylindrical body 21. In this state, the arm HD can be rested during the waiting time during the work. That is, the work performed by the worker may take a long time, and when the work is stopped and waited until the next work is performed after performing one work, the worker must wait for this waiting time. The hand and arm HD can be rested in a state where the hand and arm HD are placed on the extension portion 40 on the inner side and the outer portion 41 of the cylindrical body 21.

  Moreover, as illustrated in FIG. 8, the cushion material 45 is preferably provided on the extension portion 40 on the inner side. For this cushion material 45, for example, a low resilience material can be used.

  By providing the cushion material 45 in this manner, the worker can rest his / her arm HD more easily during the waiting time with the hand / arm HD placed on the inner extended portion 40 and the outer portion 41 of the tubular body 21. Can do. Thereby, usability improves and working efficiency improves.

  As shown in FIG. 8, the outer portion 41 of the cylindrical body 21 has a plurality of step portions 42. The step portion 42 has a role of slipping when the sleeve portion 33 of the rubber glove GB is fitted and fixed. Thereby, the sleeve part 33 of the rubber glove GB can be prevented from coming off while being fitted over the outer part 41 of the cylindrical body 21.

  By using this rubber glove GB, the hand arm HD is placed in the work space SP, and the object to be processed is processed by hand, so that the hand arm HD of the worker, the cylindrical body 21, and the vertically movable glass plate 7 are disposed. No gaps are formed on the surface. Thereby, the gas in the working space SP can be prevented from leaking outside through the tubular body 21.

  Further, depending on the physique of the worker and the content of the work, the left window glass 19A, the cylindrical body 21, and the rubber glove GB assembly shown in FIG. 7, the right window glass 19B, the cylindrical body 21, and the rubber gloves are shown. The GB assembly is slid in the X direction between the upper window frame 15 and the lower window frame 16 along the X direction and brought close to each other to the center position, or conversely, they are separated from each other and pulled to the left and right positions. Can do. Thereby, since the operator can change the position in the X direction of the hand and arm HD, the processing for the workpiece can be more easily ensured.

  FIG. 9 shows a vertically moving mechanism 200 for vertically moving the vertically movable glass plate 7 along the guide rail portions 13A and 13B of the front plate 13 in the T direction.

  In the vertical movement mechanism 200 shown in FIG. 9, the pulleys 31 a and 31 b are attached to the upper portions of the guide rail portions 13 </ b> A and 13 </ b> B of the front plate 13. Ropes 33a and 33b are respectively hung on the pulleys 31a and 31b. The ropes 33a and 33b are metal wires, strings, wires or the like. In FIG. 9, the window frames 15 and 16 and the window glasses 19A and 19B are not shown for simplification of illustration.

  One ends of the ropes 33a and 33b are fixed to the lower portions of both ends of the vertically movable glass plate 7, and balance weights 35a and 35b are attached to the other ends of the ropes 33a and 33b. The weights of the balance weights 35a and 35b are balanced with the weight of the vertically movable glass plate 7.

  However, in order to reduce the weight of the vertically movable glass plate 7, a balance weight is used. However, for example, a spring type, an air type, or a hydraulic cylinder may be used.

  9A, the weights of the balance weights 35a and 35b and the weight of the vertically movable glass plate 7 are stationary while maintaining a balance. In FIG. 9B, the vertically movable glass plate 7 is In the state raised in the T1 direction, the weight of the balance weights 35a and 35b and the weight of the vertically movable glass plate 7 are stationary while maintaining a balance. In FIG. 9 (C), the weight of the balance weights 35a and 35b and the weight of the vertically movable glass plate 7 are stationary while maintaining a balance in a state where the vertically movable glass plate 7 is lowered most in the T2 direction. Yes.

  As shown in FIG. 7, the vertical movement of the vertically movable glass plate 7 is performed according to the vertical movement of the hand arm HD by the operator moving the hand arm HD inserted through the rubber gloves GB up and down. The vertically movable glass plate 7 can be moved up and down through the window glasses 19A and 19B. When the worker stops the vertical movement of the hand and arm HD, the vertically movable glass plate 7 can be balanced with the balance weights 35a and 35b at the stop position.

  Further, the movement of the operator's hand arm HD in the X direction is performed by moving the hand arm HD inserted through the rubber glove GB in the X direction, which is the left and right direction, so that the window glasses 19A and 19B are moved to the upper window frame. 15 and the lower window frame 16, the left and right hand arms HD can be moved and positioned separately in the X direction within the restriction range of the horizontally long oval openings 7A and 7B.

  Next, the usage example of the hand arm insertion opening type | mold hood 1 mentioned above is demonstrated.

  As shown in FIG. 9A, the user raises the glass plate 7 that can move up and down slightly in the T1 direction, and on the placement surface 151 in the work space SP as shown in FIG. Place BT. Then, as shown in FIG. 9C, the user closes the vertically movable glass plate 7 by lowering it in the T2 direction.

  As shown in FIG. 7 and FIG. 8, the user inserts the hand and arm HD together with the rubber glove GB into the work space SP while inserting the hand and arm HD into the rubber glove GB, and the object to be processed in the work space SP. Process the BT.

  During this operation, the operator moves the hand and arm HD inserted into the cylindrical body 21 up and down (in the T direction). The movable glass plate 7 moves up and down. When the worker stops the vertical movement of the hand and arm HD, the vertically movable glass plate 7 can be balanced with the balance weights 35a and 35b at the stop position. Thereby, the position in the T direction of the arms HD on both sides of the operator can be freely changed according to the processing of the object to be processed.

  Moreover, the window glass 19A, 19B is moved between the upper window frame 15 and the lower window frame 16 by moving the hand and arm HD inserted into the cylindrical body 21 in the left-right direction (X direction) as necessary. It can be slid along the X direction in a sliding door manner and brought close to each other to the central position, or conversely, they can be moved away from each other. Thereby, the position about the X direction of an operator's both arms can be freely changed according to the process of a to-be-processed object.

  As shown in FIG. 8, the cylindrical body 21 has an extension 40 on the inner side as an inner end. The extended portion 40 is formed to extend to the inner region of the vertically movable glass plate 7, that is, the work space SP side. By providing the extended portion 40 so as to extend toward the work space SP, the axial length of the cylindrical body 21 can be set not only in the outer area of the work space SP but also in the work space SP area. Can be secured.

  For this reason, the worker can rest the hand and arm HD during the waiting time during the work with the hand and arm HD placed. The work performed by the worker may take a long time, and when the work is stopped and waited until the next work is performed after one work is performed, the worker holds the skill HD during this waiting time. The arm HD can be rested in a state of being placed on the inner extension portion 40 and the outer portion 41 of the cylindrical body 21.

  Moreover, as illustrated in FIG. 8, the cushion material 45 is provided on the extended portion 40 on the inner side. By providing the cushion material 45 in this manner, even if the cylindrical body 21 is made of a hard material, the operator can use his arm HD during the waiting time and the extension portion 40 on the inner side of the cylindrical body 21 and the cylinder. The arm HD can be rested more easily in a state where it is placed on the outer portion 41 of the shaped body 21.

  Thereby, even if it is a long-time processing work, the worker can work more comfortably. That is, since the extended portion 40 that is the inner end portion of the cylindrical body 21 is formed so as to extend from the vertically movable glass plate 7 that is the front opening closing means into the work space SP, the operator can The arm HD can be rested over the extended portion 40 that is the inner end portion of the cylindrical body 21 and the outer portion 41 of the cylindrical body 21. Therefore, the worker can reduce the fatigue of his / her arms even during a standby time such as waiting for processing when processing the object to be processed using, for example, the rubber gloves GB from the opening.

  In the first embodiment of the present invention, as shown in FIG. 1, the main body cover 3 and the mounting table 150 are separate, and the vibration on the main body cover 3 side is not transmitted to the mounting table 150 side. ing. For example, in the case where a workpiece is precisely weighed on the order of μg, it takes time until the numerical value measured by the precise balance is stabilized. In addition to the balance, many precision weighing devices need temperature stability, and it takes time to stabilize the numerical values to be measured.

  In the meantime, the arms HD on both sides of the operator cannot touch the mounting table 151 on which the balance is installed in order to wait for the stability of the numerical value to be measured. For this reason, the arms HD on both sides of the worker maintain the state in which the tweezers, the spatula, and the sample bottle are held while floating from the mounting table 151.

  In this way, even if the operator's arms hold the tweezers and the like, the hand arm HD can rest by placing the hand arm HD on the extended portion 40 that is the inner end portion of the cylindrical body 21. For this reason, the worker can reduce fatigue of the hand and arm HD even during a standby time such as waiting for processing when processing the object to be processed using, for example, the rubber gloves GB from the opening.

  Next, other embodiments of the present invention will be sequentially described. The same reference numerals are given to the same portions as those in the first embodiment described above, and the description thereof will be omitted.

(Second Embodiment)
FIG. 10 is a cross-sectional view showing a second embodiment of the present invention.

  The second embodiment of the present invention differs from the first embodiment of the present invention shown in FIG. 8 in the shape of the cushion material 145. In FIG. 8, the cushion material 45 is provided only on the extension 40 on the inner side of the cylindrical body 21, but in the second embodiment shown in FIG. 10, the cushion material 145 is provided on the inner side of the cylindrical body 21. The extended portion 40 and the outer portion 41 of the cylindrical body 21 are provided.

  Therefore, even if the cylindrical body 21 is made of a hard material, the operator can use the arm HD to cushion the extended portion 40 on the inner side of the cylindrical body 21 and the outer portion 41 of the cylindrical body 21 during this waiting time. The arm HD can be rested more easily while being placed on the material 145. Thereby, even if it is a long-time processing work, the worker can work comfortably with a more comfortable posture.

(Third embodiment)
FIG. 11 is a cross-sectional view showing a third embodiment of the present invention.

  In 3rd Embodiment of this invention shown in FIG. 11, the extension part 40 of the inner side of the cylindrical body 21 has flexibility, and can be elastically deformed. Accordingly, as shown in FIGS. 11A to 11B, when the operator inserts the hand arm HD into the cylindrical body 21, the extended portion 40 can be elastically deformed. For this reason, the worker can rest his / her hand / arm HD more easily during this waiting time with the hand / arm placed on the extended portion 40 on the inner side of the tubular body 21 and the outer portion 41 of the tubular body 21. it can. Thereby, even if it is a long-time processing work, the worker can work comfortably with a more comfortable posture.

  Moreover, the whole cylindrical body 21 may have flexibility. As a result, the cylindrical body 21 is elastically deformed so as to adapt to the weight of the placed hand arm HD, so that the hand arm HD can be easily placed and the hand arm HD can be rested easily. Thereby, even if it is a long-time processing work, the worker can work comfortably with a more comfortable posture.

(Fourth embodiment)
12 and 13 are cross-sectional views showing a fourth embodiment of the present invention.

  In the fourth embodiment of the present invention shown in FIGS. 12 and 13, the structure of the cylindrical body 21 and the fact that the cylindrical body 21 can be moved and positioned in the X direction are the third to third embodiments of the present invention. The form is the same.

  Furthermore, in the fourth embodiment, the cylindrical body 21 can be moved further along the T direction (T1 direction, T2 direction) to change the position and be positioned. . That is, a position changing unit 70 such as a ratchet mechanism is provided between the window glass 19 </ b> A (19 </ b> B) of the cylindrical body 21 and the cylindrical body 21. The position changing unit 70 includes a first claw member 71 and a second claw member 72.

  The first claw member 71 shown in FIG. 12 is provided on the window glass 19A (19B) side, and the second claw member 72 is provided on the extended portion 73 of the cylindrical body 21. The first claw member 71 has a plurality of claws 71A, and the second claw member 72 has a plurality of claws 72A. The plurality of claws 71A and the plurality of claws 72A are engaged with each other.

  The first claw member 71 shown in FIG. 12 is pressed by the force of the holding member 74 so as to mesh the plurality of claws 71A with the plurality of claws 72A. The holding member 74 is an elastically deformable plate material such as a rubber plate. The first claw member 71 has a handle 75.

  Therefore, the operator holds the handle 75 shown in FIG. 12 and pulls the first claw member 71 in the Y1 direction against the force of the holding member 74 as shown in FIG. Separate from the plurality of claws 72A.

  Holding the state where the plurality of claws 71A and the plurality of claws 72A are separated, the operator moves slightly in the T1 direction or the T2 direction of the cylindrical body 21, and then stops pulling the holding member 74. Thus, the holding member 74 can press and engage the plurality of claws 71A against the plurality of claws 72A. In this way, the height position of the cylindrical body 21 in the T direction can be positioned with minute changes by changing the meshing positions of the plurality of claws 71A and the plurality of claws 72A.

  The large movement of the cylindrical body 21 in the T direction may be performed by moving the vertically movable glass plate 7 up and down via the window glasses 19A and 19B as described above. However, if it is desired to change the height position by performing a minute movement of the cylindrical body 21 in the T direction according to the work, and to position it, the meshing positions of the plurality of claws 71A and the plurality of claws 72A are set. It is possible to easily change and position the height position by minute movement of the cylindrical body 21 in the T direction simply by changing. Thereby, the operator can work comfortably with a more comfortable posture according to the size and placement position of the object to be processed by slightly changing the height positions of both hands and arms.

(Fifth embodiment)
14 and 15 are cross-sectional views showing a fifth embodiment of the present invention.

  In the fifth embodiment of the present invention shown in FIGS. 14 and 15, an opening / closing door 300 is additionally provided at a position below the vertically movable glass plate 7. The open / close door 300 includes a vertical frame member 301, a horizontal frame member 302, and a transparent glass plate 303. The frame member 302 can be opened and closed in the RR direction (opening direction) and the RS direction (closing direction) with respect to the lower window frame 16 using two hinge members 304 as shown in FIGS. It is attached.

  Thus, by providing the opening / closing door 300 on the vertically movable glass plate 7, as shown in FIG. 15, the operator can open the work space SP through the opening OR generated by opening only the opening / closing door 300. The inner cleaning, for example, the inner surface of the vertically movable glass plate 7 can be cleaned. In addition, through the opening OR that is generated by opening the opening / closing door 300, it is possible to easily put in and out various types of instruments and objects to be processed in the work space SP.

  The arm insertion opening type hood 1 of the embodiment of the present invention includes a vertically movable glass plate 7 as a front opening closing means for closing the opening on the front surface of the work space SP with a transparent plate moving in the vertical direction (T direction). The window glass 19A as a cylindrical body moving means provided in the front opening closing means and capable of moving the position of the cylindrical body 21 for inserting the operator's hands and arms into the work space in the left-right direction (X direction). , 19B, and the inner end portion (extension portion 40) of the tubular body 21 is configured to hold the operator's arm inserted into the tubular body 21.

  For this reason, since the inner end portion (extension portion 40) of the cylindrical body 21 can hold the operator's arm inserted into the cylindrical body 21, the operator can move the glass of the cylindrical body 21 up and down. You can rest by placing your hand on the plate 7. Thereby, the worker can reduce fatigue of hands (hands and arms) even in a standby time such as waiting for processing when processing an object to be processed using, for example, rubber gloves from the opening.

  Further, in the hand-arm insertion opening type hood 1, the front opening of the work space SP is provided on the vertically movable glass plate 7 as a front opening closing means for closing the opening with a transparent plate, and the vertically movable glass plate 7. A cylindrical body 21 is provided for inserting the operator's hand and arm into the work space SP. The cylindrical body 21 includes an insertion opening for inserting the hand and arm into the work space SP, and an insertion opening. And a cushion material 45 (145) disposed at least at a position where the arm is placed.

  Therefore, in the case of the hand-arm insertion opening type hood 1 having a structure in which the cylindrical body 21 does not move in the vertical direction and the horizontal direction, even if the cylindrical body 21 is made of a hard material, the operator With the hand (hand and arm) placed on the cushioning material 45 (145) during the waiting time, the hand (hand and arm) can be rested more easily. Thereby, even if it is a long-time processing work, the worker can work comfortably with a more comfortable posture.

  Furthermore, in the hand-arm insertion opening type hood 1, the cylindrical body 21 has flexibility. For this reason, the worker can rest his / her hand (hand / arm) more easily while the hand (hand / arm) is placed on the cylindrical body during the waiting time. Thereby, even if it is a long-time processing work, the worker can work comfortably with a more comfortable posture.

  In the hand-arm insertion opening type hood 1, the position of the cylindrical body 21 includes a position changing unit 70 that can be adjusted and positioned along the vertical direction as well as the horizontal direction. For this reason, the cylindrical body 21 can be positioned by slightly changing the height position according to the work, and workability is improved.

  The hand-arm insertion opening type hood 1 is provided in the front opening closing means (7) for closing the opening on the front face of the work space SP with a transparent plate that moves in the vertical direction, and the front opening closing means. A cylindrical body 21 for inserting the hand, and an opening / closing door 300 provided at the lower part of the front opening closing means and capable of opening and closing the work space.

  Thereby, the operator can clean the inside of the work space SP, for example, the inner surface of the vertically movable glass plate 7 which is the front opening closing means, through the opening generated by opening only the door. In addition, various types of instruments and objects to be processed can be easily taken in and out of the work space through the opening generated by opening the door.

  The present invention has been described with reference to the embodiments. However, each embodiment is an example, and the scope of the invention described in the claims can be variously modified without departing from the scope of the invention. . Each embodiment of the present invention can be arbitrarily combined.

  The above-described hand-arm insertion opening type hood 1 can be used as a constant temperature and humidity chamber device used for accurately measuring a material to be weighed, for example, a fine particle material PM2.5.

  The hand arm insertion opening type hood 1 of the embodiment of the present invention is an example of negative pressure in the working space, but the hand arm insertion opening type hood 1 can be applied not only to negative pressure but also to positive pressure.

  In the hand-arm insertion opening type hood 1 according to the embodiment of the present invention, the protruding portion (extension portion 40) can be detachably provided. Alternatively, in the hand arm insertion opening type hood 1 of the embodiment of the present invention, the protruding portion (extension portion 40) can be retracted into the cylindrical body 21, and the protruding portion (extension portion 40) does not protrude into the work space. It is possible to adopt a configuration as described above.

  As described above, for example, FIG. 8 illustrates a structure in which the protruding portion (extension portion 40) is drawn into the cylindrical body 21 when the protruding portion (extension portion 40) does not protrude into the work space SP. In the same way as turning the glove, which is the rubber glove GB, inside out, and inserting it into the work space SP, the protruding portion (extension portion 40) is turned inside out and pulled into the cylindrical body 21. In some cases, only the protruding portion (extension portion 40) of the cylindrical body 21 is simply pulled out so as to be removed from the inside of the cylindrical body 21.

1 Hand arm insertion opening type hood 3 Body cover 7 Vertically movable glass plate (front opening closing means)
19A, 19B Window glass (tubular body moving means)
21 Cylindrical body 40 Extension part (inner end part)
70 Position changing section 150 Mounting table 300 Opening / closing door T Vertical direction X Left / right direction

Claims (6)

Front opening closing means for closing the opening on the front surface of the work space with a transparent plate that moves in the vertical direction;
A cylindrical body moving means that is provided in the front opening closing means and that allows the position of the cylindrical body to be inserted into the work space to move in the left-right direction;
A hand arm insertion opening type hood characterized in that an inner end portion of the cylindrical body can hold the operator's arm inserted into the cylindrical body. Front opening closing means for closing the opening on the front surface of the work space with a transparent plate;
Provided in the front opening closing means, and having a cylindrical body for inserting a worker's arm into the work space,
The cylindrical body has an insertion opening for inserting a hand arm into the work space, and a cushion material disposed at a position where at least the arm is placed in the insertion opening. Hand arm insertion opening type hood.   The hand-arm insertion according to claim 1 or 2, wherein the cylindrical body is formed so that an inner end portion of the cylindrical body extends from the front opening closing means to the work space. Open hood.   The hand-arm insertion opening type hood according to any one of claims 1 to 3, wherein the cylindrical body has flexibility.   The position of the said cylindrical body has a position change part which can be adjusted and positioned not only in the said left-right direction but along the said up-down direction, Either of Claim 1, 3 or 4 characterized by the above-mentioned. Hand arm insertion opening type hood. Front opening closing means for closing the opening on the front surface of the work space with a transparent plate that moves in the vertical direction;
A cylindrical body provided in the front opening closing means for inserting an operator's hand into the work space;
An opening / closing door provided at a lower portion of the front opening closing means and capable of opening and closing the work space;
A hand arm insertion opening type hood characterized by comprising:

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