WO2022118447A1 - Capot de protection de balance électronique - Google Patents

Capot de protection de balance électronique Download PDF

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Publication number
WO2022118447A1
WO2022118447A1 PCT/JP2020/045121 JP2020045121W WO2022118447A1 WO 2022118447 A1 WO2022118447 A1 WO 2022118447A1 JP 2020045121 W JP2020045121 W JP 2020045121W WO 2022118447 A1 WO2022118447 A1 WO 2022118447A1
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WO
WIPO (PCT)
Prior art keywords
door
housing
windshield
front glass
electronic balance
Prior art date
Application number
PCT/JP2020/045121
Other languages
English (en)
Japanese (ja)
Inventor
久則 織田
Original Assignee
株式会社 エー・アンド・デイ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社 エー・アンド・デイ filed Critical 株式会社 エー・アンド・デイ
Priority to JP2022566591A priority Critical patent/JP7402596B2/ja
Priority to PCT/JP2020/045121 priority patent/WO2022118447A1/fr
Publication of WO2022118447A1 publication Critical patent/WO2022118447A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G21/00—Details of weighing apparatus
    • G01G21/28—Frames, Housings

Definitions

  • the present invention relates to a windshield for an electronic balance in which the door can be automatically opened and closed, and weighing chambers of different sizes can be configured at low cost.
  • the volume of the weighing chamber is appropriate for the weighing operation and the sample (for example, Patent Document 1).
  • the volume that is, the size of the weighing chamber is proportional to the amount of air inflow and outflow of the weighing chamber when the door is opened, it is desirable that the size of the weighing chamber is appropriate.
  • the present invention has been made in view of the above problems, and provides a windshield provided with an automatic door opening / closing mechanism and capable of configuring weighing chambers of different sizes at low cost.
  • the front glass, the left and right side walls are configured, and the doors that slide in the front-rear direction and automatically open and close, the top door, and the front glass are arranged opposite to each other.
  • the front glass, the door, and a housing for defining the weighing chamber in cooperation with the upper door are provided, and the left and right side edges of the upper surface of the housing straddle the left and right side edges of the weighing chamber.
  • a housing provided with a suspension mechanism for suspending the door so as to be slidable and a drive means for moving the door forward and backward is disposed, and the drive source of the drive means is housed in the housing.
  • the windshield is configured as a separate body from the housing, and by replacing the housing with another housing having a different length, the windshield is configured so as to be adaptable to another windshield having weighing chambers having different lengths.
  • the weighing chamber can be applied to a windshield of a different size by replacing the housing with a different length. Since most of them can be shared, windshields of other sizes can be constructed at low cost.
  • the housing and the housing are each provided with a hole for communicating the space for arranging the drive means and the space for arranging the drive source in a state where the housing is arranged in the housing. It was configured to be.
  • the drive means and the drive source can be connected through the hole. It is easy to connect the two, and even windshields of different sizes can be constructed at low cost.
  • the housing extends from the left and right side edges of the top surface of the housing along the left and right side edges of the top surface of the weighing chamber to provide a guide rail that slidably suspends the door.
  • An air cylinder for moving the door forward and backward is provided, and an air pump which is a drive source of the air cylinder is housed in the housing, and is connected to the air cylinder by an air tube.
  • the door can be automatically opened and closed using an air cylinder.
  • the movement locus is a straight line, which is suitable for moving the door forward and backward. By shortening the stroke, it is easy to divert it to a small windshield.
  • the door, the front glass, and the upper surface door are configured to be detachably supported by the housing. This aspect makes it easier to construct different weighing chambers.
  • a slider that is assembled to the suspension mechanism and can move forward and backward along the suspension mechanism, and a connecting member that is provided between the slider and the door and can be connected / disconnected.
  • the drive means is constructed so that the door connected to the slider is moved forward and backward by moving the slider forward and backward.
  • the door can be opened and closed automatically, and it is possible to provide a windshield for an electronic balance that can configure weighing chambers of different sizes at low cost.
  • FIG. 1 It is a partial transmission perspective view of the electronic balance provided with the windshield which concerns on a preferred embodiment of this invention. It is a right side view of the electronic balance. It is a rear view of the electronic balance. It is explanatory drawing for demonstrating the structure of a door, and is the partial cross-sectional perspective view which was partially broken by line IV-IV of FIG. It is a block diagram of the control system of the windshield. It is a block diagram of a door opening / closing mechanism. It is an operation table of the door opening / closing mechanism. It is an exploded perspective view of the electronic balance shown in FIG. It is explanatory drawing which shows the connection mechanism of the front glass. It is explanatory drawing which shows the connection mechanism of the left and right doors.
  • FIG. 1 It is an exploded perspective view which shows the structure of a main case and a cylinder box. It is sectional drawing along the XII-XII line of FIG. It is disconnected at the port part. It is sectional drawing along the XIII-XIII line of FIG. It is cut at the boss part. It is explanatory drawing for demonstrating the action effect, and is the partial transmission perspective view of the electronic balance which concerns on another Embodiment. It is a side view of the electronic balance shown in FIG. It is a modification of the electronic balance shown in FIG. It is explanatory drawing for demonstrating the action and effect, and is the partial transmission perspective view of the electronic balance which concerns on still another Embodiment. It is a side view of the electronic balance shown in FIG. This is a modified example. This is a modified example.
  • FIG. 1 is a partially transparent perspective view of an electronic balance 1 provided with a windshield 10 according to a preferred embodiment of the present invention.
  • the electronic balance 1 includes a balance body 30 and a windshield 10.
  • the balance body 30 is provided with a weighing pan 31 on the upper surface thereof for placing a sample.
  • a weighing mechanism is provided at the bottom of the weighing pan 31. Since a conventionally well-known configuration is used for the weighing mechanism, the description thereof will be omitted.
  • the windshield 10 is arranged on the upper surface of the balance body 30 so as to surround the circumference of the weighing plate 31, and the air flow around the weighing plate 31 is generated, for example, the wind of an air conditioner, the breath of a person during weighing, or when a person walks. It acts as a wind pressure on the load-bearing portion centering on the weighing pan 31, such as the flow of air to prevent it from affecting the weighing.
  • the windshield 10 is detachably configured on the electronic balance 30.
  • a conventionally well-known configuration for example, a configuration published in Japanese Patent Application Laid-Open No. 2008-216047 can be applied to the attachment / detachment mechanism.
  • the windshield 10 and the electronic balance 30 may be inseparably integrated and configured.
  • the windshield 10 is a bottomless box type, and has a front glass 12 on the front surface, a box-shaped main case 18 on the back surface, a door 11 on a part of the left and right side walls, and an upper surface door 13 on the upper surface.
  • a rectangular parallelepiped weighing chamber S1 is formed inside.
  • the cylinder box 20 is arranged so as to form the left and right upper sides of the windshield 10 from the left and right side edges of the upper surface of the main case 18 to the left and right side edges of the weighing chamber S1.
  • the cylinder box 20 is a hollow housing, and an air cylinder 40, which is a driving means for opening and closing the door 11, is housed inside.
  • the cylinder box 20 has an upper frame 17 extending along the side edge portion on the engaging side with the main case 18 and serving as a frame member on the upper part of the windshield 10.
  • the upper frame 17 is fixed to the cylinder box 20 and becomes a part of the cylinder box 20.
  • the air cylinder 40 is a double-acting type, and the reciprocating motion of the internal piston is performed by air pressure both on the way back and forth, so there are two ports for sending air into the air cylinder 40.
  • the front side of the air cylinder 40 is provided with a reverse port 46 for advancing the piston backward by the sent air, and the rear side is provided with a forward port 44 for sending the piston forward.
  • An air tube (not shown) is connected to the forward port 44 and the reverse port 46, and is connected to the inside of the main case 18.
  • the main case 18 is a housing for accommodating the components of the windshield 10 inside, and inside the main case 18, a power source (pump) of an air cylinder 40, a solenoid valve for controlling air flow stop, and these are further installed.
  • a control mechanism 7 such as a windshield control unit 34 to be controlled is housed.
  • the door 11 can move in the front-rear direction along the rail 14a provided on the base member 14 which is the frame member below the windshield 10.
  • the upper door 13 can move in the front-rear direction along the rail grooves 20a provided in the cylinder box 20 on the left and right sides of the upper part of the windshield 10.
  • the front glass 12, the top door 13, and the left and right doors 11 are made of transparent glass or resin so that the internal state can be observed. Handles for assisting the slide are attached to the upper door 13 and the door 11, respectively.
  • the top door 13 can be opened and closed manually, and the doors 11 on the left and right sides can be opened and closed automatically and manually.
  • the control panel 35 is for operating the balance body 30 and the windshield 10, and is provided separately from the balance body 30 and the windshield 10. This is to prevent the vibration of the operation such as pressing the switch from affecting the weighing. Since it is a separate body, the user can freely arrange it in a position where it is easy to operate. It has a wireless communication function for sending and receiving signals, but signals may be sent and received by wire.
  • the control panel 35 is provided with a display unit 38 for displaying a weighing result and a state, an input unit 37 for operation, and an infrared sensor 36 on the upper surface thereof.
  • the infrared sensor 36 is an open / close switch for the door 11, and the door 11 can be automatically opened / closed simply by holding a hand over the upper part.
  • a pressing switch may be provided instead of the infrared sensor 36, and it is also preferable to provide both the pressing switch and the infrared sensor 36.
  • a balance operation function other than the door 11 opening / closing function may be assigned to the infrared sensor 36.
  • Two infrared sensors 36 may be provided on the left and right so as to open and close the corresponding door 11.
  • FIG. 2 is a right side view of the electronic balance 1.
  • FIG. 3 is a rear view of the windshield 10.
  • FIG. 4 is an explanatory diagram for explaining the shape and configuration of the door 11, showing only the door 11 and the cylinder box 20, and is a partial cross-sectional perspective view of the cylinder box 20 cut along the IV-IV line of FIG. be.
  • a connecting member 90 is arranged at the corner of the upper front end of the door 11.
  • the connecting member 90 has a first locking member 91, and the door 11 is detachably connected to the connecting member 90 by the first locking member 91.
  • the upper part of the connecting member 90 is connected to the air cylinder 40 which is the driving means of the door 11 in the cylinder box 20, and the door 11 is connected to the air cylinder 40 via the connecting member 90 and opens and closes by driving the air cylinder 40. do.
  • the door 11 and the connecting member 90 will be described as being connected and moving together. The mechanism of the connecting member 90 will be described later.
  • a recess is formed on the inner wall of the cylinder box 20 according to the shape of the air cylinder 40, and the air cylinder 40 is engaged and fixed there.
  • the pair of upper frames 17 have a substantially rectangular parallelepiped shape long in one direction, and are arranged along the recesses 18a provided at the left and right edges of the upper part of the main case 18 and are arranged on the upper part of the windshield 10. It constitutes a frame member.
  • the cylinder box 20 has an inverted L-shaped extruded outer shape when viewed from the rear, and the upper side portion is placed on the upper surface of the upper frame 17, and the inner side surface abuts on the side surface of the upper frame 17 to form an inverted L shape.
  • the right-angled portion engages with the corner portion of the upper frame 17 and is fixed to the upper frame 17 in the longitudinal direction.
  • the upper frame 17 is integrated with the cylinder box 20 and becomes a part of the cylinder box 20.
  • the cylinder box 20 does not have a bottom surface (see FIG. 3), and the upper part of the door 11 is arranged so as to enter the inside of the cylinder box 20.
  • An inner flange portion 20c is formed inward at the lower end portion of the outer surface 20b of the cylinder box over the entire length in the longitudinal direction. Further, in the lower portion of the outer surface 17g of the upper frame 17, a convex portion 17h extending over the entire length in the longitudinal direction (front-back direction) facing the inner flange portion 20c is formed.
  • the door 11 is held by a holder 16 provided on the entire outer edge.
  • Holding portions 5 projecting in the thickness direction (left-right direction) of the door 11 are formed at two front and rear positions on the upper portion of the holder 16 so as to be orthogonal to the sliding direction (front-back direction) of the door 11.
  • the upper part of the door 11 enters the slit (hereinafter referred to as a guide hole 20d) formed between the inner flange portion 20c and the convex portion 17h, and the holding portion 5 of the holder 16 has the inner flange portion 20c and the convex portion 17h. Engage with and hold the door 11 suspended.
  • the door 11 is arranged away from the bottom surface of the rail 14a formed on the base member 14, and is slidably held along the guide hole 20d. If dust, sand, or the like intrudes into the rail 14a, there is a problem that the sliding resistance when opening and closing the door 11 becomes large and opening and closing becomes difficult. However, this is prevented by suspending the door 11 itself from above.
  • the inner flange portion 20c and the convex portion 17h are formed so as to be slightly offset in the vertical direction without facing each other, and the inner convex portion 17h is located at a position slightly higher than the inner flange portion 20c.
  • the holding portion 5 protrudes from the upper part of the door 11 to the same height on the left and right, and the door 11 is tilted inward by slightly raising the inside rather than making the door 11 easily swing to the left and right.
  • the lower part of the door 11 is brought into contact with the side surface of the rail 14a to stably maintain the posture of the door 11. With this configuration, the door 11 does not swing even if it is moved, and it is possible to move the door 11 while maintaining the same posture when opening and closing the door 11, and the door 11 is inadvertently slid. Can be prevented.
  • the holding portion 5 of the door 11 is formed so as to match the inner flange portion 20c and the convex portion 17h, and the first engaging portion 16b formed so as to project toward the outer flange portion 20c side and the inner arrangement. It is composed of a second engaging portion 16c formed so as to project toward the convex portion 17h side, and a third engaging portion 16d formed offset downward below the second engaging portion 16c.
  • the third engaging portion 16d is formed so as to sandwich the convex portion 17h together with the second engaging portion 16c, but the third engaging portion 16d is provided with a gap so as to be separated from the bottom surface of the convex portion 17h. Is formed.
  • the suspension support form of the door 11 is configured in this way, but the form in which the holding portion 5 formed in a T shape engages with the slit formed in the flat plate and the holding portion 5 are hook-shaped.
  • Other conventionally known configurations such as a form of engaging with a convex rail may be used.
  • a holding portion 5 is also formed in the connecting member 90 arranged at the upper part of the front end of the door 11, and the connecting member 90 is also slidably suspended and supported in the guide hole 20d like the door 11. Will be done.
  • a drive mechanism coupling portion 90a projecting above the upper surface of the holder 16 is formed on the upper portion of the connecting member 90, and a coupling hole 90b along the sliding direction of the door 11 is further formed in the center of the drive mechanism coupling portion 90a. Is formed. The tip of the piston rod 40a extending from the piston in the air cylinder 40 is fitted and fixed to the coupling hole 90b.
  • the piston (piston rod 40a) is connected to the door 11 via the connecting member 90, and the piston moves back and forth by air, so that the connecting member 90 and the door 11 connected to the connecting member 90 slide along the guide hole 20d. do. In this way, the door 11 opens and closes using the air cylinder 40 as a driving means.
  • the air cylinder 40 does not come into contact with the upper surface of the holder 16 and is fixed apart from the holder 16 (see FIG. 3).
  • the air cylinder 40 does not interfere with the movement of the door 11.
  • the drive mechanism coupling portion 90a protrudes upward from the upper surface of the holder 16, but since the drive mechanism coupling portion 90a is fixed to the tip of the piston rod 40a, it does not enter below the air cylinder 40, and the cylinder. Since the path of the drive mechanism coupling portion 90a in the box 20 is also secured, the cylinder box 20 and the drive mechanism coupling portion 90a do not interfere with each other.
  • the air cylinder 40 which is the driving means of the door 11, is arranged substantially directly above the door 11 and parallel to the sliding direction of the door 11.
  • the connecting member 90 is integrated with the holder 16 and is connected to the air cylinder 40 by the connecting member 90.
  • the door 11 can be moved directly without going through a pulley, a rubber belt, or the like. Therefore, the force transmission rate is good, the door 11 can be opened and closed with a small amount of force, and the door 11 can be opened and closed smoothly.
  • FIG. 5 is a block diagram of the control system of the windshield 10.
  • FIG. 6 is a block diagram of an opening / closing mechanism 60 that opens / closes the door 11.
  • the windshield 10 includes a first pressurizing pump 62A, a second pressurizing pump 62B, a first pressure sensor 64A, a second pressure sensor 64B, a first one electromagnetic valve 66A, and a second one electromagnetic valve 66B. , And a windshield control unit 34 that controls all of these is provided as the control mechanism 7. All of these are stored in the main case 18.
  • the windshield control unit 34 generates various command signals based on the input signal.
  • the windshield control unit 34 controls only the windshield 10, but a control unit that controls both the balance body 30 and the windshield 10 may be used to control both the windshield 10 and the balance body 30.
  • the infrared sensor 36 that generates an open / close signal may be directly provided on the windshield 10.
  • the opening / closing mechanism 60 shown in FIG. 6 is a mechanism for opening / closing the door 11, and the left and right doors 11 each include an opening / closing mechanism 60, which is independently controlled by the connected opening / closing mechanism 60.
  • the pump for moving (forwarding) the piston inside the air cylinder 40 (further, the piston rod 40a extending from the piston) forward and the pump for moving backward (reverse) exist separately. ..
  • the opening / closing mechanism 60 includes a first pressurizing pump 62A, a second pressurizing pump 62B, a first pressure sensor 64A, a second pressure sensor 64B, a first one electromagnetic valve 66A, a second one electromagnetic valve 66B, and a second pressurizing pump 62A as a control mechanism 7.
  • An air cylinder 40 is provided as a driving means. The air cylinder 40 is connected to the door 11 via the piston rod 40a.
  • the first pressurizing pump 62A and the second pressurizing pump 62B are both air pumps. It is a drive source of the air cylinder 40, compresses air and sends it to the air cylinder 40, and moves the piston by the air pressure to move the door 11.
  • the outlet side of the valve is open to the atmosphere, and the air stop is controlled by opening and closing the valve.
  • the first pressure sensor 64A monitors the pressure of the air discharged from the first pressurizing pump 62A
  • the second pressure sensor 64B monitors the pressure of the air discharged from the second pressurizing pump 62B. Since the first pressure sensor 64A and the second pressure sensor 64B are connected to the air cylinder 40, in other words, the pressure sensor determines the pressure of the air supplied to the air cylinder 40 and the pressure of the air in the air cylinder. I'm watching.
  • a first pressurizing pump 62A is connected to a forward port 44 provided behind the air cylinder 40. There is a branch on the way, and the first pressure sensor 64A and the first one-side solenoid valve 66A are further connected.
  • a second pressurizing pump 62B is connected to the reverse port 46 provided in front of the air cylinder 40. There is a branch on the way, to which the second pressure sensor 64B and the second one-side solenoid valve 66B are connected.
  • the air cylinder 40 which is the drive source of the door 11, is arranged in the cylinder box 20, and other components of the control system, that is, the first pressure pump 62A, the second pressure pump 62B, the first pressure sensor 64A, and the first pressure sensor 64A.
  • the two pressure sensors 64B, the first one-sided electromagnetic valve 66A, the second one-sided electromagnetic valve 66B, and the windshield control unit 34 for controlling them are all arranged in the main case 18.
  • FIG. 7 is an operation table of the opening / closing mechanism 60.
  • the windshield control unit 34 commands each element to operate.
  • the air pressure also rises sharply. Therefore, when the first pressure sensor 64A detects this change, the first pressurizing pump 62A is stopped, the first electromagnetic valve 66A is opened, and the air is opened. The compressed air in the cylinder is released to the atmosphere and returns to the standard state.
  • the door 11 is automatically locked during calibration work.
  • the door 11 may be configured to be locked by a command from the infrared sensor 36.
  • the door 11 can be locked not only during calibration but also during transportation.
  • the other pressure pump When one pressure pump is movable, the other pressure pump is not movable, only one solenoid valve is closed, and the other solenoid valve is open to communicate with the atmosphere.
  • the closed solenoid valve opens and communicates with the atmosphere. That is, when the pressurizing pump is stopped, the solenoid valve is opened on one side to communicate with the atmosphere.
  • the door 11 After the door 11 is automatically opened and closed, the air is released to the atmosphere, the load applied to the door 11 is eliminated, and the door 11 can be manually and smoothly moved smoothly.
  • the door 11 can be automatically opened and closed, it can be manually opened and closed immediately without any special operation after the door 11 is automatically opened and closed.
  • the air pressure of the air cylinder 40 is monitored by the first pressure sensor 64A and the second pressure sensor 64B, and when the air pressure exceeds a predetermined value, the windshield control unit 34 performs the first pressurizing pump 62A and the second pressurizing. It is configured to stop the pump 62B.
  • the windshield control unit 34 performs the first pressurizing pump 62A and the second pressurizing. It is configured to stop the pump 62B.
  • the pressurizing pump is stopped and the solenoid valve is opened. Finger pinching and malfunction are also guaranteed by this configuration.
  • FIG. 8 is an exploded perspective view of the electronic balance 1.
  • the base member 14 is formed in a rectangular flat plate shape, and is composed of a front region FR and a rear region RR.
  • the front region FR has a frame shape, and the central portion is a window portion having a large opening so that it can be placed on the upper surface of the balance body 30 without touching the weighing pan 31.
  • the base member 14 is placed on the upper surface of the balance body 30, and the main case 18 is placed on the rear region RR of the base member 14.
  • the front glass 12, the left and right doors 11, and the top door 13 provided in the windshield 10 are all configured to be removable. Further, the cylinder box 20 is also configured as a separate body from the main case 18.
  • FIG. 9 shows a state in which the front glass 12 is removed from the windshield 10.
  • Locked members 93 are provided at the upper left and right corners of the front glass 12. The locked member 93 is firmly fixed by sandwiching the front glass 12 from the front and back, and does not fall off from the front glass 12.
  • a second locking member 95 provided for locking the front glass 12 is provided in a recess formed in front of the side surface of the cylinder box 20 at the front end from the front surface of the cylinder box 20.
  • the locking portion 95b which is a portion, is arranged in a protruding state.
  • the second locking member 95 is a flat plate-shaped clip structure having a front end side as an action point and a rear end side as a force point, and is rotatable by a shaft 95a extending in the vertical direction at the center of the longitudinal direction (front-back direction).
  • the locking portion 95b is urged inward by a supported and not shown elastic member.
  • the inside of the locking portion 95b is chamfered so as to become thinner toward the front, and a fitting recess 95c is formed inside the locking portion 95b.
  • a guide groove 93a is provided on the side surface of the locked member 93 according to the arrangement position of the second locking member 95, and a fitting convex portion 93b that engages with the fitting recess 95c is provided on the bottom surface of the guide groove 93a. Is formed.
  • the bottom surface of the front glass 12 is fitted into the groove 14j (see FIG. 8) formed in the front edge of the base member 14, and the upper portion is pressed toward the cylinder box 20. 2
  • the locking member 95 is guided by the guide groove 93a, and the fitting recess 95c fits into the fitting convex portion 93b to fix the front glass 12.
  • the fitting convex portion 93b has an inclined surface that continues from the end portion so that the second locking member 95 is smoothly guided, and the locking portion 95b, which is the front end portion of the second locking member 95, is also chamfered inside. It is configured so that the front glass 12 can be easily locked with one touch.
  • the protrusion 93c provided on the back surface of the locked member 93 also engages with the recess 20 g (see FIG. 8) provided on the front surface of the cylinder box 20 to assist the positioning of the front glass 12.
  • the second locking member 95 is urged by an elastic member (not shown), the front glass 12 is firmly locked, and there is no concern that the front glass 12 will be accidentally disengaged when the windshield 10 is used. ..
  • the front glass 12 is fitted in the groove 14j, and the upper part is locked in two places by the second locking member.
  • the front glass 12 can be removed by pressing the left and right second locking members 95 with both hands and tilting the front glass 12 forward as it is. Can be done.
  • the surface of the end portion 95d is provided with a slightly raised mark 95e, so that the end portion 95d can be easily found even if the work is done by fumbling. There is no concern that the front glass 12 will accidentally fall off during the removal work, and workability is good.
  • the upper surface door 13 can be slid forward and removed.
  • the rear end side of the rail groove 20a that guides the movement of the upper door 13 has a stopper and is not opened.
  • the front end side of the rail groove 20a is open, the front glass 12 is arranged during normal use, and the slid top door 13 abuts on the front glass 12 so that it does not fall off.
  • FIG. 10A and 10B show a state in which the door 11 and the connecting member 90 are connected
  • FIG. 10A shows a state in which the door 11 and the connecting member 90 are disconnected
  • FIG. 10B shows a state in which the door 11 and the connecting member 90 are connected. Shows the connected state.
  • the outer shape of the cylinder box 20 is shown by a broken line in FIG.
  • a connecting mechanism 99 is provided at the front upper corner of the door 11.
  • the front side edge portion thereof does not extend to the upper end portion of the door 11, but extends rearward in front of the upper end portion, and further extends upward to the upper end portion, and is connected to the upper edge portion.
  • the connected portion 16e is formed so as to avoid the corner portion 11a in front of the upper part of the door.
  • the corner portion 11a not covered by the holder 16 by the connected portion 16e enters the slit 90c formed on the rear side surface of the connecting member 90 and engages with the connecting member 90.
  • the first locking member 91 has the same configuration as the second locking member 95, and is attached in the opposite direction to the second locking member 95. That is, it is a clip structure having the same configuration, and has an end portion 91d whose front end portion is a force point and a locking portion 91b whose rear end portion is an action point. Like the second locking member 95, it is rotatably supported by the shaft 91a, and the locking portion 91b is urged inward by an elastic member (not shown). A fitting recess 91c is formed inside the locking portion 91b, and fits into the fitting convex portion 16f formed in the connected portion 16e of the holder 16. As a result, the door 11 is connected to the connecting member 90 and moves integrally with the connecting member 90.
  • the engagement can be disengaged only by pushing the end portion 91d having the mark 91e as in the case of the second locking member 95. Since the rear end of the guide hole 20d is open, the door 11 can be removed from the windshield 10 by sliding the door 11 rearward in a disengaged state.
  • the locking portion 91b overcomes the fitting convex portion 16f and naturally engages with the urging by an elastic body (not shown) simply by sliding the door 11 forward. It can be installed with one touch and can be easily removed.
  • the tip of the piston rod 40a is fixed to the drive mechanism coupling portion 90a above the connecting member 90, whereby the door 11 is connected to the air cylinder 40 via the connecting member 90 and automatically opens and closes. ..
  • the connecting member 90 also has a holding portion 5, and the upper portion thereof enters the cylinder box 20 from the holding portion 5 to slidably suspend and support the connecting member 90 in the guide hole 20d, but the lower portion is suspended from the holding portion 5. Is exposed to the outside from the guide hole 20d, and a first locking member 91 is provided in this exposed portion and is connected to the door 11. Normally, since the drive mechanism is installed inside to prevent failure, it is difficult to remove the door connected to the drive mechanism. However, with this configuration, one of the connecting members 90 connected to the drive mechanism. The portion can be exposed to the outside and connected to the door 11 at the exposed portion, facilitating connection / disconnection with the drive mechanism.
  • the door 11 is a slide mechanism that is suspended and supported by the guide hole 20d and moves along the guide hole 20d. When the door 11 is disconnected from the connecting member 90, the door 11 can be easily removed by the guide hole 20d whose rear end is opened. can.
  • FIG. 11 is an exploded perspective view of the cylinder box 20 and the main case 18.
  • recesses 18a are provided on the left and right side edges of the upper surface of the main case 18, on which the cylinder box 20 including the upper frame 17 is placed.
  • the upper frame 17 is provided with two notches 17a and 17b on the outer surface, and the reverse port 46 and the forward port 44 of the air cylinder 40 are engaged with the notches 17a and 17b. do.
  • the main case 18 is formed in a bottomless box shape, and a pressurizing pump of the control mechanism 7 and a solenoid valve are arranged in the internal space.
  • the horizontal plane 18b of the recess 18a is provided with insertion holes 18c and 18d leading to the internal space at two locations, front and rear.
  • Insertion holes 17c and 17d for inserting an air tube are provided on the bottom surface of the cutout portions 17a and 17b of the upper frame 17.
  • the insertion hole 17c communicates with the insertion hole 18c
  • the insertion hole 17d communicates with the insertion hole 18d.
  • FIG. 12 is a cross-sectional view taken along the line XII-XII of FIG. 2, which is a cross-sectional view at a position passing through the reverse port 46.
  • the door 11 is suspended and supported by the cylinder box 20 by the holder 16.
  • the air cylinder 40 is held inside the cylinder box 20 at a position that does not interfere with the movement of the door 11.
  • the cylinder box 20 is provided with a cover 20e at the upper portion, and the cover 20e is used as a press to hold and guide the upper surface door 13 to form a rail groove 20a.
  • the guide hole 20d for slidably suspending the door 11 and the air cylinder 40 as a drive mechanism are provided in the cylinder box 20.
  • a control mechanism 7 including a pressurizing pump that is a drive source of the air cylinder 40 is provided in the internal space of the main case 18.
  • the air in the air cylinder 40 is sent from the reverse port 46 through the insertion hole 17c of the upper frame 17 by an air tube (not shown). , Passing through the insertion holes 18c of the main case 18 in order, and connected to the second pressurizing pump 62B arranged in the internal space of the main case 18 (see the arrow in FIG. 12 and FIG. 6). Similarly, in the forward port 44, the air of the air cylinder 40 is arranged in the internal space of the main case 18 from the reverse port 46 through the insertion hole 17d of the upper frame 17 and the insertion hole 18d of the main case 18. It is connected to the first pressurizing pump 62A (see FIG. 6).
  • FIG. 13 is a cross-sectional view taken along the line XIII-XIII of FIG. 2, which is a cross-sectional view at a position passing through the boss 18e.
  • the holes of the boss 17e and the boss 18e communicate with each other. With the holes communicating with each other, the tapping screw N having a diameter larger than the inner diameter of the holes of the boss 17e and the boss 18e is screwed from below to fix both.
  • the main case 18 and the cylinder box 20 are firmly fixed by the tapping screw N, but both may be detachably configured by uneven engagement, lance engagement, or the like.
  • the main case 18 and the cylinder box 20 constituting the windshield 10 are configured as separate bodies.
  • the cylinder box 20 suspends and supports the door 11 with the guide hole 20d, and holds the air cylinder 40, which is the driving means of the door 11, inside.
  • a control mechanism 7 including a pressurizing pump which is a drive source of the air cylinder 40 is arranged in the main case 18, and both are connected by an air tube.
  • the cylinder box 20 is integrated in the main case 18, and the cylinder box 20 is removed from the main case 18 and a cylinder box of another length is arranged to have a length.
  • a windshield with different weighing chambers can be easily configured.
  • the door 11, the front glass 12, and the upper surface door 13 defining the weighing chamber S1 are detachably attached to the cylinder box, so that it is easier to newly configure the weighing chamber. It has become.
  • FIG. 14 shows an electronic balance 101, which is another form of the electronic balance 1.
  • FIG. 15 is a side view of the electronic balance 101. The same components are designated by the same reference numerals and the description thereof will be omitted.
  • the electronic balance 101 includes a balance body 130 and a windshield 110.
  • the cylinder box 120 is arranged in the recesses 18a provided on the left and right upper sides of the main case 18, the door 11 is slidably suspended and supported by the cylinder box 120, and the front glass 12 is forward. Is arranged, and the upper surface door 13 is arranged above to define the weighing chamber S2.
  • the balance body 130 has a shorter depth length in the front-rear direction than the balance body 30.
  • the windshield 110 also has a shorter depth length in the front-rear direction than the windshield 10, and similarly, the cylinder box 120 is also shorter in the front-rear direction than the cylinder box 20.
  • the weighing chamber S2 of the windshield 110 has the same width and height as the weighing chamber S1 of the windshield 10, and the depth length in the front-rear direction is only about 2/3.
  • the cylinder box 120 has the same configuration as the cylinder box 20 such as a notch and an insertion hole, and is shorter as a whole in the front-rear direction as compared with the cylinder box 20.
  • An air cylinder 40 is arranged in the cylinder box 120 with a short stroke.
  • the air cylinder 40 is connected to the control mechanism 7 in the main case 18, and the door 11 is connected to the air cylinder 40 via the connecting member 90 and is automatically opened and closed.
  • a second locking member 95 is provided on the front side surface of the cylinder box 20 to detachably lock the front glass 12.
  • the rail groove 120a provided in the cylinder box 120 guides the opening / closing movement of the upper surface door 13.
  • the base member 114 mounted on the balance body 130 is composed of a rear region RR and a front region FR1.
  • the rear region RR on which the main case 18 is placed remains the same as the base member 14, and only the front region FR1 mounted on the weighing chamber S2 avoiding the weighing pan 131 is configured to be shorter than the front region FR.
  • the first pressure sensor 64A / second pressure sensor 64B detects it, and the first pressurizing pump 62A / second addition is performed.
  • the pressure pump 62B is configured to stop and the opening / closing operation is stopped. Even if the stroke of the air cylinder 40 is shortened and arranged, the door 11 abuts on the front glass 12 on the back side, the air pressure increases, and both pressure pumps (62A, 62B) stop. Therefore, it is easy to set the door automatic opening / closing of the newly configured weighing chamber.
  • the door 11, the front glass 12, and the upper surface door 13 constituting the weighing chamber are configured to be easily removable, so that weighing chambers of different sizes can be more easily configured.
  • FIG. 16 shows an electronic balance 101A which is a modification of the electronic balance 101 shown in FIG.
  • the electronic balance 101A includes a balance body 130 and a windshield 110A.
  • the windshield 110A has a weighing chamber S2 defined by left and right doors 111, a main case 18, an upper surface door 113, and a front glass 12 (not shown).
  • the door 111 is provided with a connecting mechanism 99, and is connected to the air cylinder 40 by the second locking member 95 via the connecting member 90.
  • the upper door 113 is slidably supported by the rail groove 120a of the cylinder box 120.
  • the door 111 and the upper surface door 113 have the same elements as the door 11 and the upper surface door 13, but have a shorter length in the front-rear direction than the door 11 and the upper surface door 13 according to the size of the weighing chamber S2. ing.
  • each removable door may have a length suitable for the size of the weighing chamber S2 to be defined.
  • FIG. 17 is a partially transparent perspective view showing the electronic balance 201, which is still another form of the electronic balance 1.
  • FIG. 18 is a right side view of the electronic balance 201.
  • the electronic balance 201 includes an electronic balance body 230 and a windshield 210.
  • the cylinder box 220 is arranged in the recesses 18a provided on the left and right upper sides of the main case 18, the door 211 is suspended and supported by the cylinder box 220 so as to be slidable, and the front glass 12 is in front.
  • the upper surface door 213 is arranged above and defines the weighing chamber S3.
  • the balance body 230 is larger than the balance body 30 and has a long depth dimension in the front-rear direction.
  • the windshield 210 also has a longer depth dimension in the front-rear direction than the windshield 10, and similarly, the cylinder box 220 also has a configuration in which the depth dimension in the front-rear direction is longer than that of the cylinder box 20.
  • the weighing chamber S3 of the windshield 210 has the same width and height as the weighing chamber S1 of the windshield 10, but has a longer depth dimension in the front-rear direction.
  • an air cylinder 240 having a stroke longer than that of the air cylinder 40 is held inside the cylinder box 220, and an insertion hole for inserting an air tube is provided at a position corresponding to the main case 18 and is provided in the front-rear direction as a whole. It is composed long.
  • the door 211 and the upper surface door 213 are configured to be longer in the front-rear direction than the door 11 and the upper surface door 13.
  • a second locking member 95 is provided on the front side surface of the cylinder box 220, and the front glass 12 is detachably locked.
  • a rail groove 220a extending in the front-rear direction inside the cylinder box 220 guides the opening / closing movement of the upper door 213.
  • the base member 214 mounted on the balance body 230 is composed of a rear region RR and a front region FR2.
  • the rear region RR on which the main case 18 is placed remains the same as the base member 14, and only the front region FR2 mounted on the weighing chamber S3 avoiding the weighing pan is configured to be longer than the front region FR.
  • control mechanism 7 in the main case 18 and the air cylinder 240 are connected by an air tube, and the door 211 is connected to the air cylinder 240 via the connecting member 90, so that the door 211 automatically opens and closes. Will be done.
  • the windshield provided with the weighing chamber S3 long in the depth direction can also be configured at low cost.
  • the base member 14 is used as the lower frame member for the windshield, but the main case 18 may be directly arranged on the balance body 30 without using the base member 14.
  • the base member 14 is mounted on the balance body 30, the door 11 is also suspended and supported by the cylinder box 20 provided in the main case 18, and the front glass 12 is also cylinderd by the second locking member 95. It is locked to the box 20. If the main case 18 is placed directly on the balance body 30, the base member 14 becomes unnecessary. Therefore, it is possible to configure the structure without using the base member 14.
  • the balance body 30 is provided with a protrusion or a rail for guiding the movement of the door 11.
  • FIG. 19 shows, as yet another embodiment, an electronic balance 301 that does not include the base member 14. Those having the same configuration are designated by the same reference numerals and the description thereof will be omitted.
  • the electronic balance 301 is composed of a balance body 330 and a windshield 310.
  • the windshield 310 has the same configuration as the windshield 10 except that it does not include the base member 14, and the main case 18 is placed directly on the upper surface of the balance body 330.
  • the balance body 330 is provided with a convex rail 330a extending in a line in the front-rear direction on the upper surface, and the windshield 310 is placed along the convex rail 330a.
  • the door 11 is guided to move by the convex rail 330a and is opened and closed along the convex rail 330a.
  • the windshield 310 may be configured without including the base member 14. Further, in this case, it is preferable that the windshield 310 is fixed to the balance body 330 by a fixing member (not shown).
  • the windshield of a higher weighing chamber can be easily configured by arranging the bottom raising member under the main case 18.
  • FIG. 20 shows, as yet another embodiment, an electronic balance 401 in which a bottom raising member 80 is interposed between a main case 18 and a base member 14.
  • the electronic balance is composed of a balance body 30 and a windshield 410.
  • the bottom raising member 80 is arranged under the main case 18, and the weighing chamber S4 is configured higher than the weighing chamber S1 by the added bottom raising member 80 minutes.
  • the weighing chamber S4 is defined by a door 411, a front glass 412, and a top door 13 which are configured to be higher by the amount raised by the bottom.
  • the door 411, the front glass 412, and the upper surface door 13 that define the weighing chamber S4 are detachably attached to the cylinder box 20.
  • the door 411 is suspended and supported by a cylinder box 20, and can be automatically opened and closed by an air cylinder 40.
  • the windshield of the present disclosure has a configuration that can be easily applied to a weighing chamber having a different height by using the bottom raising member 80.
  • the windshields of the present disclosure are configured to be easily adaptable to windshields having weighing chambers of different heights and lengths, as well as other windshields having weighing chambers of the desired size. It can be configured at low cost.
  • Control mechanism 10 Windshield 11: Door 12: Front glass 13: Top door 14: Base member 17: Upper frame 17c: Insertion hole 17d: Insertion hole 18: Main case 18c: Insertion hole 18d: Insertion hole 20: Cylinder box 20d: Guide hole 30: Balance body 31: Weighing pan 40: Air cylinder 60: Opening / closing mechanism S1: Weighing chamber

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

L'invention concerne un capot de protection d'une balance électronique muni de portes qui peuvent s'ouvrir et se fermer automatiquement et permettent de former de manière peu coûteuse des chambres de pesée de différentes hauteurs. Le présent capot de protection de balance électronique comprend une vitre avant (12), des portes (11) composant des parois latérales gauche et droite et qui sont automatiquement ouvertes et fermées par coulissement dans la direction avant-arrière, une porte de plafond (13), et un boîtier (18) disposé de manière à faire face à la vitre avant (12) et qui forme une chambre de pesée (S1) conjointement avec la vitre avant (12), les portes (11) et la porte de plafond (13). L'invention concerne également un corps (20) comprenant un mécanisme de suspension (20d) qui s'étend depuis les parties de bord latéral gauche et droit du plafond du boîtier (18) vers les parties de bord latéral gauche et droit de la chambre de pesée et suspend de manière coulissante les portes (11) et un moyen d'entraînement (40) pour amener les portes (11) à se déplacer vers l'avant et vers l'arrière. Une source d'entraînement (7) destiné au moyen d'entraînement (40) est logée à l'intérieur du boîtier (18). Le boîtier (18) et le corps (20) sont conçus de façon à constituer des pièces séparées. La substitution du corps (20) par un corps séparé présentant une longueur différente permet l'adaptation d'un autre capot de protection doté d'une chambre de pesée d'une longueur différente.
PCT/JP2020/045121 2020-12-03 2020-12-03 Capot de protection de balance électronique WO2022118447A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2022566591A JP7402596B2 (ja) 2020-12-03 2020-12-03 電子天びん用の風防
PCT/JP2020/045121 WO2022118447A1 (fr) 2020-12-03 2020-12-03 Capot de protection de balance électronique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/045121 WO2022118447A1 (fr) 2020-12-03 2020-12-03 Capot de protection de balance électronique

Publications (1)

Publication Number Publication Date
WO2022118447A1 true WO2022118447A1 (fr) 2022-06-09

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JP (1) JP7402596B2 (fr)
WO (1) WO2022118447A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010266436A (ja) * 2009-05-13 2010-11-25 Mettler-Toledo Ag ラボラトリ用機器のための通風防止デバイス
JP2011161531A (ja) * 2010-02-05 2011-08-25 Shinmaywa Industries Ltd 安全カバーの開閉装置
US20120279788A1 (en) * 2011-05-06 2012-11-08 Ohaus Corporation Weighing device draft shield with displaceable and adjustable wall
JP2019215318A (ja) * 2018-04-17 2019-12-19 メトラー−トレド ゲーエムベーハー 風防の電動摺動頂壁を含む実験用天秤

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010266436A (ja) * 2009-05-13 2010-11-25 Mettler-Toledo Ag ラボラトリ用機器のための通風防止デバイス
JP2011161531A (ja) * 2010-02-05 2011-08-25 Shinmaywa Industries Ltd 安全カバーの開閉装置
US20120279788A1 (en) * 2011-05-06 2012-11-08 Ohaus Corporation Weighing device draft shield with displaceable and adjustable wall
JP2019215318A (ja) * 2018-04-17 2019-12-19 メトラー−トレド ゲーエムベーハー 風防の電動摺動頂壁を含む実験用天秤

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JP7402596B2 (ja) 2023-12-21

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