WO2014034611A1 - Wind blocking device for scale - Google Patents

Wind blocking device for scale Download PDF

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Publication number
WO2014034611A1
WO2014034611A1 PCT/JP2013/072748 JP2013072748W WO2014034611A1 WO 2014034611 A1 WO2014034611 A1 WO 2014034611A1 JP 2013072748 W JP2013072748 W JP 2013072748W WO 2014034611 A1 WO2014034611 A1 WO 2014034611A1
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WO
WIPO (PCT)
Prior art keywords
frame
panel
shield plate
windshield device
claw
Prior art date
Application number
PCT/JP2013/072748
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French (fr)
Japanese (ja)
Inventor
智武 吉田
弘 須澤
和文 内藤
Original Assignee
新光電子株式会社
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.)
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Publication date
Application filed by 新光電子株式会社 filed Critical 新光電子株式会社
Priority to CN201390000724.5U priority Critical patent/CN204807184U/en
Priority to JP2014532996A priority patent/JP6203180B2/en
Publication of WO2014034611A1 publication Critical patent/WO2014034611A1/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01GWEIGHING
    • G01G21/00Details of weighing apparatus
    • G01G21/28Frames, Housings
    • G01G21/286Frames, Housings with windshields

Definitions

  • the present invention relates to a windshield device for a scale, and is configured so that it can be easily attached to and detached from the scale body and cleaned.
  • a precision balance such as an electronic balance can affect the measurement accuracy even if the air in the room where it is installed moves slightly. Therefore, as described in Patent Document 1 below, a windshield case is installed so as to surround a weighing pan on which a sample is placed, and the flow of air is conventionally blocked.
  • a windshield case is installed so as to surround a weighing pan on which a sample is placed, and the flow of air is conventionally blocked.
  • there are a wide range of weighing locations from quiet laboratories to manufacturing sites where air flow is not constant, and measurement is performed in an environment where a windshield device is indispensable for maintaining the accuracy of the electronic balance. Increasing cases are being reported.
  • the inside of the windshield device may become dirty with an object to be weighed. In such a case, the inside of the windshield device needs to be cleaned.
  • the windshield device of Patent Document 1 is a structure in which posts are installed at the four corners of the lower base frame, the side plates are fitted into the fitting grooves of each post, and the upper base frame is fixed to the upper end of the post. There is a problem that the inside cannot be easily cleaned.
  • the present invention was devised in view of such circumstances, and an object of the present invention is to provide a windshield device for a scale that is easy to attach and detach to and from the balance body and enables high-precision weighing of the scale body. It is said.
  • the present invention is such that the support shaft supporting the weighing pan protrudes from the upper surface, and a square shield plate fixed to the upper surface covers the entire upper surface except the periphery of the support shaft via the shield plate
  • a frame-shaped base frame that is resin-molded into a quadrangular shape corresponding to the outer periphery of the shield plate, and a metal made upright on the rear side (rear side) of the frame-shaped base frame
  • the front edge of the guide part is fixed, and the front edge of the frame-like base frame (front side) is transparent and the lower edge is locked, and the guide frame can be slid in the front-rear direction.
  • the shield plate has a notch hole on each of the rising edges of the opposing sides, and a claw that engages with each of the notch holes from the outside is provided on the windshield device side.
  • the windshield device can be removed from the scale body by releasing the engagement between the notch hole of the shield plate and the claw when cleaning the inside of the weighing pan or the windshield device.
  • the top panel and the side panels on both sides can be slid and removed, it is easy to clean the inside of the weighing pan and the windshield device with the windshield device mounted on the scale body.
  • the windshield device for a scale has a notch hole formed in the rising edge of the front side and the rising edge of the rear side of the shield plate, and the cutout hole formed in the rising edge of the front side of the shield plate.
  • Claws to be joined are provided inwardly on the back side of the front side of the frame-shaped base frame, and claws that engage with a notch formed in the rising edge of the rear side of the shield plate are on the outer surface of the rear frame.
  • the latch is provided with a base part fixed to the rear frame, a pivot part supported by the base part so as to be pivotable in a horizontal direction via a hinge part, A shield holding portion extending downward from the lower edge; a claw provided on the shield holding portion; and a snap portion for locking the turning portion rotated to a position overlapping with the base portion.
  • Claw of shield holding part while locked to snap part Characterized in that it engages in the notch hole formed on the rising edge of the rear side of the shield plate.
  • This windshield device engages a claw with a notch hole formed in the rising edge of the front side of the shield plate, and then latches the rotating part of the latch fixed to the rear frame with the snap part.
  • the claw engages with a notch hole formed in the rising edge of the rear side of the shield plate, and is attached to the scale body. Therefore, the windshield device can be attached to and detached from the balance body with one touch.
  • the windshield device for scales of this invention it is desirable to shape
  • the rising edges on the left and right sides of the shield plate are in contact with the inner surfaces of the left and right sides of the frame-like base frame. By this contact, the left and right direction of the windshield device is positioned with respect to the balance body.
  • a metal inner panel that covers the inside of the rear frame is disposed at a position behind the weighing pan and in front of the rear frame, and the inner panel is formed after the top panel is removed. It is possible to pull it upward.
  • the inner panel prevents the rear frame from being dirty, and the dirty inner panel can be removed and cleaned.
  • the inner panel is held on both side edges folded inside the rear frame, and an inner panel holder for guiding the inner panel when pulled out is attached. Both side edges folded inside the rear frame are covered with the inner panel holder and are not exposed.
  • a transparent conductive film is coated on the inner surfaces of the front panel, the top panel, and the side panel, and the conductive film formed on the front panel is formed on the front side of the frame-shaped base frame.
  • the conductive coating formed on the top panel and the side panel is electrically connected to the shield plate through the spring contact member disposed, and the conductive film formed on the top panel and the side panel is connected to the rear frame through the spring contact member disposed at the base of the guide frame.
  • the rear frame is electrically connected, and is electrically connected to the shield plate via a spring-like contact member disposed on the rear side of the frame-shaped base frame.
  • a shielded windshield device Since the measurement accuracy of the electronic balance is affected when the windshield device is charged with static electricity, a shielded windshield device has been used conventionally. However, when the windshield device is detachable from the scale body and the top panel and the side panel are slidable, it is difficult to secure the conduction path of the windshield device.
  • the top panel and the side panel are electrically connected to the metal rear frame using a contact member, and the fixed rear frame and front panel are electrically connected to the shield plate using the contact member.
  • the lower end of metal inner panels is made to contact a shield board, and the inner panel and the shield board are electrically connected. Therefore, even if the windshield device is detachable from the scale body, the top panel and the side panel are slidable, and the inner panel is removable, the static electricity in the weighing space can be released, resulting in static electricity. It is possible to suppress a decrease in accuracy of the electronic balance.
  • the scale windshield device of the present invention can be easily attached to and detached from the scale body and cleaned inside. Also, static electricity that affects the weighing accuracy of the scale body can be released.
  • the figure which shows the state which removed the windshield apparatus of FIG. 1 from the scale main body. 1 is an exploded perspective view of the windshield device and the shield plate of FIG.
  • the figure which shows the latch of the windshield apparatus of FIG. The figure which shows the procedure when mounting
  • FIG. 1 shows a state in which a windshield device 20 according to an embodiment of the present invention is mounted on a scale body 10.
  • Fig.1 (a) is the perspective view seen from diagonally forward
  • FIG.1 (b) is the perspective view seen from diagonally backward.
  • FIG. 2 shows a state in which the windshield device 20 is removed from the scale body 10.
  • a weighing pan 11 supported by a support shaft (not shown) on the upper surface of the case body 10
  • a rectangular shield plate 12 covering substantially the entire surface of the case except the periphery of the support shaft is provided on the upper surface of the case. It is fixed.
  • the shield plate 12 is electrically connected to the inside of the scale body 10.
  • the windshield device 20 includes a rectangular frame-shaped base frame 21 having a size corresponding to the outer periphery of the shield plate 12, and a rear side (rear side) of the frame-shaped base frame 21.
  • a rear frame 22 erected on top, an inner panel 28 disposed in front of the rear frame 22, a base portion 231 fixed to the upper end of the rear frame 22, and a pair of front ends extending from both ends of the base portion 231
  • a guide frame 23 having a guide portion 232, a transparent front panel 24 having an upper edge fixed to the tip of the guide portion 232, and a lower edge locked to the front side (front side) of the frame-like base frame 21,
  • a transparent top panel 25 supported by a pair of guide portions 232 of the guide frame 23 so as to be slidable in the front-rear direction, each guide portion 232 of the guide frame 23 and a frame-shaped base
  • the rear frame 22 and the inner panel 28 are made of metal, and the frame-shaped base frame 21 is formed of resin.
  • a base portion 231 and a guide portion 232 are integrally formed of resin.
  • the front panel 24, the top panel 25, and the side panels 26 and 27 are made of transparent glass or an acrylic plate.
  • Guide portions 212 of sliding side panels 26 and 27 are provided on the left and right side sides of the frame-shaped base frame 21.
  • the rear frame 22 has a mounting portion 222 screwed to the rear side of the frame-shaped base frame 21 at the lower edge, and has a mounting portion 221 screwed to the base 231 of the guide frame 23 at the upper edge. ing.
  • the rear frame 22 has both side edges folded back inward, and an inner panel holder 281 that holds the inner panel 28 is fixed to the folded piece.
  • the inner panel holder 281 has a groove into which the folded piece of the rear frame 22 is fitted.
  • the folded piece is covered by the inner panel holder 281.
  • the pair of inner panel holders 281 fixed to the folded pieces of the rear frame 22 has grooves in which the side edges of the inner panel 28 are fitted to the surfaces facing each other, and the inner panel 28 is held by the grooves, Further, when the inner panel 28 is pulled upward, it is guided by this groove.
  • the inner panel 28 is provided with a recess at the center so that the windshield device 20 is not attached to the weighing pan 11 when the windshield device 20 is mounted on the scale body 10.
  • a screw hole for receiving the fixing bolt 241 of the front panel 24 is provided on the distal end side of the guide portion 232 of the guide frame 23, and the front edge of the front panel 24 is fixed to the guide portion 232 of the guide frame 23 by the fixing bolt 241. Combined, the lower edge is locked and fixed to the front panel holder portion 211 on the front side of the frame-shaped base frame 21. Further, knobs 251, 261, 271 are fixed to the sliding top panel 25 and side panels 26, 27 by fixing bolts 252, 262, 272, respectively.
  • a transparent conductive film (such as an ITO film) is formed inside the front panel 24, the top panel 25, and the side panels 26 and 27.
  • these conductive films are finally electrically connected to the shield plate 12 that is electrically connected to the inside of the scale body 10.
  • the four sides of the shield plate 12 are raised at the edges, two notched holes 121 are formed at the rising edge of the front side, and the notched holes 122 are formed at one central position at the rising edge of the rear side. Is formed.
  • FIG. 4 shows the back side of the frame-shaped base frame 21.
  • two claws 213 that engage with the cutout holes 121 of the shield plate 12 are formed inward.
  • the left and right side sides of the frame-shaped base frame 21 have inner side surfaces 214 with which the left and right rising edges of the shield plate 12 abut on the back surface.
  • the rear side of the frame-shaped base frame 21 does not have an outer peripheral wall on the back surface, unlike the front side and the left and right side sides. This is for the purpose of allowing the claws of the latch 40 described later to enter the lower side of the frame-like base frame 21.
  • the latch 40 is fixed to the lower edge of the outer surface of the rear frame 22 as shown in FIG.
  • the latch 40 includes a claw that engages with a notch hole 122 formed at the rising edge of the rear side of the shield plate 12.
  • the latch 40 includes a base portion 41 fixed to the lower edge of the rear frame 22, and a rotating portion supported by the base portion 41 so as to be horizontally rotatable via a hinge portion 42. 43, a shield holding portion 44 extending obliquely downward from the lower edge of the rotating portion 43, and a snap portion 45 for locking the rotating portion 43 rotated to a position overlapping the base portion 41, A claw 441 that engages with the notch hole 122 is formed in the shield holding portion 44.
  • FIG. 6 shows a procedure for mounting the windshield device 20 on the scale body 10.
  • the windshield device 20 With the rotating portion 43 of the latch 40 released from the snap portion 45, the windshield device 20 is placed on the balance body 10 as shown in FIG. At this time, the left and right rising edges of the shield plate 12 come into contact with the rear inner side surfaces 214 on the left and right sides of the frame-like base frame 21, and the lateral position of the windshield device 20 with respect to the scale body 10 is restricted.
  • the windshield device 20 is moved in the direction of the arrow in FIG. By this movement, the claw 213 formed on the back surface of the front side of the frame-shaped base frame 21 is engaged with the notch hole 121 of the shield plate 12 from the front side.
  • FIG. 7 shows the windshield device 20 and the balance body 10 after the movement.
  • the turning portion 43 of the latch 40 is turned to a position overlapping the base portion 41, and the turning portion 43 is locked to the snap portion 45.
  • the claw 441 formed on the shield holding portion 44 of the latch 40 is engaged with the notch hole 122 on the rear side of the shield plate 12 from the rear side, and at the same time, both side portions 442 of the shield holding portion 44 are It contacts the rising edge of the rear side of the shield plate 12. Therefore, the position of the windshield device 20 in the front-rear direction with respect to the balance body 10 is determined by the claw 213 formed on the back surface of the front side of the frame-shaped base frame 21 and the shield restraining portion 44 of the latch 40 from the front and rear. It is fixed by pinching.
  • the position in the left-right direction is fixed by the left and right rising edges of the shield plate 12 coming into contact with the back-side inner surface 214 of the left and right sides of the frame-like base frame 21. Further, the windshield device 20 can be detached from the scale body 10 by performing the reverse operation.
  • the claw 213 formed on the back surface of the frame-shaped base frame 21 and the claw 441 formed on the shield holding portion 44 of the latch 40 are further away from the tip of the claw. It is desirable to incline the surface to increase the thickness. By doing so, both can be engaged so that a gap does not occur between the claws 213 and 441 and the cutout holes 121 and 122, and the windshield device 20 is not loosened against the scale body 10. Can be mounted in a stable state.
  • the windshield device 20 can be attached to and detached from the scale body 10 with a single touch. Therefore, when the windshield device 20 is removed from the scale body 10 to clean the inside of the weighing pan 11 and the windshield device 20 and then reassembled after cleaning, the operation is simple.
  • the windshield device 20 has a measuring space divided by a front panel 24, a top panel 25, side panels 26 and 27, and an inner panel 28.
  • the top panel 25 and the side panels 26 and 27 can be slid rearward and removed, and the inner panel 28 is pulled upward with the top panel 25 removed as shown in FIG. Can do.
  • the windscreen device 20 is removed from the scale body 10 or the windscreen device 20 is attached to the scale body 10 while the front panel 24, the top panel 25, The side panels 26 and 27 or the inner panel 28 can be removed from the windshield device 20 and cleaned.
  • this windshield device 20 it is difficult to remove the rear panel 22.
  • the rear panel 22 is covered with the inner panel 28, the inner side of the rear panel 22 is not exposed to the measuring space and is soiled by the object to be weighed. There is no fear.
  • the conductive coating formed on the non-sliding front panel 24 is electrically connected to the shield plate 12 by the conductive path 1 as shown in FIG.
  • the conductive coating formed on the sliding top panel 25 and side panels 26 and 27 is electrically connected to the metal rear panel 22 through the conductive path 6, the conductive path 2 and the conductive path 3, respectively.
  • the conductive path 5 is electrically connected to the shield plate 12.
  • the metal inner panel 28 makes the lower end directly contact the shield plate 12 (conductive path 4).
  • the conductive path 1, the conductive path 2, the conductive path 3, the conductive path 5, and the conductive path 6 are formed using a contact member such as a leaf spring.
  • FIG. 11 shows an example of a contact member that forms the conductive path 1.
  • the contact member 50 is disposed in a groove on the front side of the frame-like base frame 21 and elastically contacts the lower inner surface (surface on which the conductive film is formed) of the front panel 24 inserted in the groove.
  • a contact portion 501 and a shield plate contact portion 502 that elastically contacts the shield plate 12 are provided. With this contact member 50, the conductive coating on the front panel 24 is electrically connected to the shield plate 12.
  • FIG. 12 shows an example of a contact member that forms the conductive path 3 and the conductive path 6.
  • the contact member 51 includes a top panel conductive film contact portion 511 that contacts the inner surface of the top panel 25 and a side panel conductive film contact portion 512 that contacts the inner surface of the side panel 27. However, together with the base portion 231 of the guide frame 23, it is fixed to the attachment portion 221 of the rear panel 22 with screws. By this contact member 51, the conductive coatings of the top panel 25 and the side panel 27 are electrically connected to the rear panel 22.
  • FIGS. 13A and 13B show an example of a contact member that forms the conductive path 5.
  • the contact member 52 has a pair of shield plate contact pieces 521 that contact the shield plate 12, and a screwed hole is provided between the pair of shield plate contact pieces 521.
  • the contact member 52 is disposed on the back surface of the frame-shaped base frame 21, and is fixed to the attachment portion 222 of the rear panel 22 together with the frame-shaped base frame 21 with screws.
  • the rear panel 22 is electrically connected to the shield plate 12 by the contact member 52.
  • the windshield device 20 can be attached to and detached from the scale body 10 and can maintain the shield function even when the top panel 25 and the side panels 26 and 27 are slidable. Static electricity that affects the measurement accuracy of the main body 10 can be released, and a decrease in measurement accuracy can be suppressed.
  • the structure shown here is an example, Comprising: This invention is not limited only to the structure.
  • the windshield device for a scale according to the present invention can be easily attached to and detached from the scale body and cleaned inside, and can be widely applied to scales that perform weighing in various environments.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Induction Heating Cooking Devices (AREA)
  • Instrument Panels (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)

Abstract

Provided is a wind blocking device that is mounted on a scale unit via a shield plate (12) that is fixed to the scale unit. The wind blocking device has the following: a frame-shaped base frame (21); a rear frame (22); a guide frame (23); a front panel (24) coupled with the end of a guide part; a slidable top panel (25); and side panels (26, 27). Disposed in front of the rear frame is an inner panel (28) that can be drawn upwards after removing the top panel. When mounting the wind blocking device, a claw provided to the frame-shaped base frame engages with a notch hole (121) in the shield plate, and a claw of a latch (40) engages with a notch hole (122) in the shield plate. Removal of the wind shield device is straightforward and detachment of the inner panel, side panel, and top panel which form the weighing space is simple, and therefore, cleaning can be easily performed.

Description

秤用風防装置Windshield device for scale
 本発明は、秤の風防装置に関し、秤本体への着脱や清掃が簡単にできるように構成したものである。 The present invention relates to a windshield device for a scale, and is configured so that it can be easily attached to and detached from the scale body and cleaned.
 電子天秤などの精密な秤は、それを設置した部屋の空気が僅かに動いただけでも計量精度に影響が現われる。そのため、下記特許文献1に記載されているように、試料を載せるための秤量皿を囲むように風防ケースを設置して、空気の流れを遮断することが従来から行われている。
 近年、化学素材や薬剤等を始めとして、高い計量精度が求められる被計量物が増えている。また、計量の実施場所も、静寂な実験室から空気の流動が絶えない製造現場まで多岐に渡っており、電子天秤の精度の維持を図る上で、風防装置が欠かせない環境で計量が行われる事例が多くなっている。
A precision balance such as an electronic balance can affect the measurement accuracy even if the air in the room where it is installed moves slightly. Therefore, as described in Patent Document 1 below, a windshield case is installed so as to surround a weighing pan on which a sample is placed, and the flow of air is conventionally blocked.
In recent years, there are an increasing number of objects to be weighed that require high weighing accuracy, including chemical materials and drugs. In addition, there are a wide range of weighing locations, from quiet laboratories to manufacturing sites where air flow is not constant, and measurement is performed in an environment where a windshield device is indispensable for maintaining the accuracy of the electronic balance. Increasing cases are being reported.
特開2003-130721号公報JP 2003-130721 A
 風防装置の内部は、被計量物で汚れる場合があり、そうしたとき、風防装置の内部の清掃が必要になる。
 しかし、特許文献1の風防装置は、下部基枠の四隅に支柱が設置され、各支柱の嵌合溝に側板が嵌合され、支柱の上端に上部基枠が固定される構造であるため、内部の清掃が簡単にできない、と言う課題がある。
The inside of the windshield device may become dirty with an object to be weighed. In such a case, the inside of the windshield device needs to be cleaned.
However, the windshield device of Patent Document 1 is a structure in which posts are installed at the four corners of the lower base frame, the side plates are fitted into the fitting grooves of each post, and the upper base frame is fixed to the upper end of the post. There is a problem that the inside cannot be easily cleaned.
 本発明は、こうした事情を考慮して創案したものであり、秤本体への着脱や清掃が容易であって、秤本体の高精度の計量を可能にする秤用風防装置を提供することを目的としている。 The present invention was devised in view of such circumstances, and an object of the present invention is to provide a windshield device for a scale that is easy to attach and detach to and from the balance body and enables high-precision weighing of the scale body. It is said.
 本発明は、秤量皿を支える支軸が上面から突出し、上面に固定された四角形状のシールド板が支軸の周囲を除く上面の略全面を覆っている秤本体に、シールド板を介して装着される風防装置であって、シールド板の外周に対応する四角形状に樹脂成形された枠状ベースフレームと、枠状ベースフレームの後ろ側の辺(後方辺)上に立設される金属製のリアフレームと、リアフレームの上端に固定される基部、及び基部の両端から前方に延出する一対のガイド部を有し、基部及びガイド部が一体に樹脂成形されたガイドフレームと、ガイドフレームのガイド部の先端に上縁が固定され、枠状ベースフレームの前側の辺(前方辺)に下縁が係止される透明なフロントパネルと、ガイドフレームの一対のガイド部により前後方向にスライド可能に支持される透明なトップパネルと、ガイドフレームの各ガイド部と枠状ベースフレームの左右の側の辺(側方辺)との間で前後方向にスライド可能に支持される透明な左右のサイドパネルと、を備え、シールド板が、対向する辺の立上がり縁のそれぞれに切欠き穴を有し、切欠き穴のそれぞれに外側から係合する爪が風防装置の側に設けられていることを特徴とする。
 この風防装置は、秤量皿や風防装置の内側を清掃する際に、シールド板の切欠き穴と爪との係合を解除すれば、秤本体から取り外すことができる。また、トップパネル及び両側のサイドパネルをスライドさせて取り外すことができるため、風防装置を秤本体に装着した状態で秤量皿や風防装置の内側を清掃することも容易である。
The present invention is such that the support shaft supporting the weighing pan protrudes from the upper surface, and a square shield plate fixed to the upper surface covers the entire upper surface except the periphery of the support shaft via the shield plate A frame-shaped base frame that is resin-molded into a quadrangular shape corresponding to the outer periphery of the shield plate, and a metal made upright on the rear side (rear side) of the frame-shaped base frame A rear frame, a base portion fixed to the upper end of the rear frame, and a pair of guide portions extending forward from both ends of the base portion, the base portion and the guide portion integrally molded with resin, and a guide frame The front edge of the guide part is fixed, and the front edge of the frame-like base frame (front side) is transparent and the lower edge is locked, and the guide frame can be slid in the front-rear direction. Support Transparent left and right side panels that are slidably supported in the front-rear direction between the guide portions of the guide frame and the left and right sides (side sides) of the frame-shaped base frame The shield plate has a notch hole on each of the rising edges of the opposing sides, and a claw that engages with each of the notch holes from the outside is provided on the windshield device side. To do.
The windshield device can be removed from the scale body by releasing the engagement between the notch hole of the shield plate and the claw when cleaning the inside of the weighing pan or the windshield device. In addition, since the top panel and the side panels on both sides can be slid and removed, it is easy to clean the inside of the weighing pan and the windshield device with the windshield device mounted on the scale body.
 また、本発明の秤用風防装置は、シールド板の前方辺の立上がり縁及び後方辺の立上がり縁に切欠き穴が形成され、シールド板の前方辺の立上がり縁に形成された切欠き穴に係合する爪が、枠状ベースフレームの前方辺の裏面に内向きに設けられており、シールド板の後方辺の立上がり縁に形成された切欠き穴に係合する爪が、リアフレームの外面に固定されたラッチに設けられており、ラッチは、リアフレームに固定されたベース部と、ベース部にヒンジ部を介して水平方向に回動可能に支持された回動部と、回動部の下縁から下方に延びるシールド抑え部と、シールド抑え部に設けられた爪と、ベース部に重なる位置まで回動された回動部を係止するスナップ部と、を具備し、回動部がスナップ部に係止された状態でシールド抑え部の爪が、シールド板の後方辺の立上がり縁に形成された切欠き穴に係合することを特徴とする。
 この風防装置は、シールド板の前方辺の立上がり縁に形成された切欠き穴に爪を係合させた後、リアフレームに固定されたラッチの回動部をスナップ部に係止させると、ラッチの爪がシールド板の後方辺の立上がり縁に形成された切欠き穴に係合し、秤本体に装着される。そのため、秤本体に対して風防装置をワンタッチで着脱できる。
Further, the windshield device for a scale according to the present invention has a notch hole formed in the rising edge of the front side and the rising edge of the rear side of the shield plate, and the cutout hole formed in the rising edge of the front side of the shield plate. Claws to be joined are provided inwardly on the back side of the front side of the frame-shaped base frame, and claws that engage with a notch formed in the rising edge of the rear side of the shield plate are on the outer surface of the rear frame. The latch is provided with a base part fixed to the rear frame, a pivot part supported by the base part so as to be pivotable in a horizontal direction via a hinge part, A shield holding portion extending downward from the lower edge; a claw provided on the shield holding portion; and a snap portion for locking the turning portion rotated to a position overlapping with the base portion. Claw of shield holding part while locked to snap part , Characterized in that it engages in the notch hole formed on the rising edge of the rear side of the shield plate.
This windshield device engages a claw with a notch hole formed in the rising edge of the front side of the shield plate, and then latches the rotating part of the latch fixed to the rear frame with the snap part. The claw engages with a notch hole formed in the rising edge of the rear side of the shield plate, and is attached to the scale body. Therefore, the windshield device can be attached to and detached from the balance body with one touch.
 また、本発明の秤用風防装置では、爪が、爪の先端から離れる程、厚さが増すように成形することが望ましい。
 こうすることで、爪と切欠き穴とのギャップが無くなり、秤本体に対して風防装置を安定的に装着することができる。
Moreover, in the windshield device for scales of this invention, it is desirable to shape | mold so that a nail | claw may increase in thickness, so that it separates from the front-end | tip of a nail | claw.
By doing so, there is no gap between the claw and the notch hole, and the windshield device can be stably attached to the scale body.
 また、本発明の秤用風防装置では、シールド板の左右側方辺の立上がり縁が、枠状ベースフレームの左右側方辺の内側面に当接する。
 この当接により、秤本体に対して風防装置の左右方向が位置決めされる。
Further, in the windshield device for a scale according to the present invention, the rising edges on the left and right sides of the shield plate are in contact with the inner surfaces of the left and right sides of the frame-like base frame.
By this contact, the left and right direction of the windshield device is positioned with respect to the balance body.
 また、本発明の秤用風防装置は、秤量皿より後方でリアフレームより前方の位置に、リアフレームの内側を覆う金属製のインナーパネルが配置され、このインナーパネルは、トップパネルを取り外した後、上方向に引き抜くことが可能である。
 この風防装置では、インナーパネルがリアフレームの汚れを防いでおり、汚れたインナーパネルは、取り外して清掃することができる。
Further, in the windshield device for a scale according to the present invention, a metal inner panel that covers the inside of the rear frame is disposed at a position behind the weighing pan and in front of the rear frame, and the inner panel is formed after the top panel is removed. It is possible to pull it upward.
In this windshield device, the inner panel prevents the rear frame from being dirty, and the dirty inner panel can be removed and cleaned.
 また、本発明の秤用風防装置では、リアフレームの内側に折り返した両側縁に、インナーパネルを保持するとともに、引き抜かれるときのインナーパネルをガイドするインナーパネルホルダが取り付けられる。
 リアフレームの内側に折り返された両側縁は、インナーパネルホルダに覆われ、露出しない。
Further, in the windshield device for a scale according to the present invention, the inner panel is held on both side edges folded inside the rear frame, and an inner panel holder for guiding the inner panel when pulled out is attached.
Both side edges folded inside the rear frame are covered with the inner panel holder and are not exposed.
 また、本発明の秤用風防装置は、フロントパネル、トップパネル及びサイドパネルの内面に透明な導電被膜がコーティングされており、フロントパネルに形成された導電被膜は、枠状ベースフレームの前方辺に配置されたバネ性の接触部材を介してシールド板に電気接続し、トップパネル及びサイドパネルに形成された導電被膜は、ガイドフレームの基部に配置されたバネ性の接触部材を介してリアフレームに電気接続し、リアフレームは、枠状ベースフレームの後方辺に配置されたバネ性の接触部材を介してシールド板に電気接続することを特徴とする。
 風防装置が静電気を帯びると電子天秤の計量精度に影響が出るため、従来からシールド構造の風防装置が用いられている。しかし、風防装置が秤本体に対して着脱可能であり、また、トップパネル及びサイドパネルがスライド可能である場合、風防装置の導通路を確保することが難しくなるが、この風防装置では、スライド可能なトップパネル及びサイドパネルは、接触部材を用いて金属製のリアフレームに導通させ、固定されたリアフレーム及びフロントパネルは、接触部材を用いてシールド板に導通させている。
In the windshield device of the present invention, a transparent conductive film is coated on the inner surfaces of the front panel, the top panel, and the side panel, and the conductive film formed on the front panel is formed on the front side of the frame-shaped base frame. The conductive coating formed on the top panel and the side panel is electrically connected to the shield plate through the spring contact member disposed, and the conductive film formed on the top panel and the side panel is connected to the rear frame through the spring contact member disposed at the base of the guide frame. The rear frame is electrically connected, and is electrically connected to the shield plate via a spring-like contact member disposed on the rear side of the frame-shaped base frame.
Since the measurement accuracy of the electronic balance is affected when the windshield device is charged with static electricity, a shielded windshield device has been used conventionally. However, when the windshield device is detachable from the scale body and the top panel and the side panel are slidable, it is difficult to secure the conduction path of the windshield device. The top panel and the side panel are electrically connected to the metal rear frame using a contact member, and the fixed rear frame and front panel are electrically connected to the shield plate using the contact member.
 また、本発明の秤用風防装置では、金属製のインナーパネルの下端をシールド板に接触させて、インナーパネルとシールド板とを電気接続させている。
 そのため、秤本体への着脱が可能であり、トップパネル及びサイドパネルがスライド可能であり、インナーパネルが取り外し可能である風防装置であっても、計量空間の静電気を逃がすことができ、静電気に起因する電子天秤の精度の低下を抑えることができる。
Moreover, in the windshield apparatus for scales of this invention, the lower end of metal inner panels is made to contact a shield board, and the inner panel and the shield board are electrically connected.
Therefore, even if the windshield device is detachable from the scale body, the top panel and the side panel are slidable, and the inner panel is removable, the static electricity in the weighing space can be released, resulting in static electricity. It is possible to suppress a decrease in accuracy of the electronic balance.
 本発明の秤用風防装置は、秤本体への着脱や内部の清掃が容易である。また、秤本体の計量精度に影響を与える静電気を逃がすことができる。 The scale windshield device of the present invention can be easily attached to and detached from the scale body and cleaned inside. Also, static electricity that affects the weighing accuracy of the scale body can be released.
本発明の実施形態に係る風防装置が装着された電子秤を示す図The figure which shows the electronic balance with which the windshield apparatus which concerns on embodiment of this invention was mounted | worn. 図1の風防装置を秤本体から外した状態を示す図The figure which shows the state which removed the windshield apparatus of FIG. 1 from the scale main body. 図1の風防装置とシールド板の分解斜視図1 is an exploded perspective view of the windshield device and the shield plate of FIG. 図1の風防装置の枠状ベースフレームを裏側から見た図The figure which looked at the frame-shaped base frame of the windshield device of FIG. 1 from the back side 図1の風防装置のラッチを示す図The figure which shows the latch of the windshield apparatus of FIG. 図1の風防装置を秤本体に装着するときの手順を示す図The figure which shows the procedure when mounting | wearing the balance main body with the windshield apparatus of FIG. 図6(b)の操作後の風防装置及び秤本体を示す図The figure which shows the windshield apparatus and scale main body after operation of FIG.6 (b). 図1の風防装置の爪形状を示す図The figure which shows the nail | claw shape of the windshield apparatus of FIG. 図1の風防装置のインナーパネルを引き出す状態を示す図The figure which shows the state which pulls out the inner panel of the windshield apparatus of FIG. 図1の風防装置からシールド板への導電路を示す図The figure which shows the conductive path from the windshield apparatus of FIG. 1 to a shield board 図10の導電路1を実現する接触部材を示す図The figure which shows the contact member which implement | achieves the conductive path 1 of FIG. 図10の導電路2及び導電路6を実現する接触部材を示す図The figure which shows the contact member which implement | achieves the conductive path 2 and the conductive path 6 of FIG. 図10の導電路5を実現する接触部材を示す図The figure which shows the contact member which implement | achieves the conductive path 5 of FIG.
 図1は、本発明の実施形態に係る風防装置20が秤本体10に装着された状態を示している。図1(a)は、斜め前方から見た斜視図であり、図1(b)は、斜め後方から見た斜視図である。図2は、風防装置20を秤本体10から外した状態を示している。
 秤本体10のケース上面には、支軸(不図示)に支えられた秤量皿11が有り、また、支軸の周囲を除くケース上面の略全面を覆う四角形状のシールド板12がケース上面に固定されている。シールド板12は、秤本体10の内部と導通している。
FIG. 1 shows a state in which a windshield device 20 according to an embodiment of the present invention is mounted on a scale body 10. Fig.1 (a) is the perspective view seen from diagonally forward, FIG.1 (b) is the perspective view seen from diagonally backward. FIG. 2 shows a state in which the windshield device 20 is removed from the scale body 10.
There is a weighing pan 11 supported by a support shaft (not shown) on the upper surface of the case body 10, and a rectangular shield plate 12 covering substantially the entire surface of the case except the periphery of the support shaft is provided on the upper surface of the case. It is fixed. The shield plate 12 is electrically connected to the inside of the scale body 10.
 風防装置20は、図3の分解斜視図に示すように、シールド板12の外周に相当する大きさの四角形状の枠状ベースフレーム21と、枠状ベースフレーム21の後ろ側の辺(後方辺)上に立設されるリアフレーム22と、リアフレーム22の手前に配置されるインナーパネル28と、リアフレーム22の上端に固定される基部231及び基部231の両端から前方に延出する一対のガイド部232を有するガイドフレーム23と、ガイド部232の先端に上縁が固定され、枠状ベースフレーム21の前側の辺(前方辺)に下縁が係止される透明なフロントパネル24と、ガイドフレーム23の一対のガイド部232により前後方向にスライド可能に支持される透明なトップパネル25と、ガイドフレーム23の各ガイド部232と枠状ベースフレーム21の左右の辺(左側方辺、右側方辺)との間で前後方向にスライド可能に支持される透明な左右のサイドパネル26、27とを有している。 As shown in the exploded perspective view of FIG. 3, the windshield device 20 includes a rectangular frame-shaped base frame 21 having a size corresponding to the outer periphery of the shield plate 12, and a rear side (rear side) of the frame-shaped base frame 21. ) A rear frame 22 erected on top, an inner panel 28 disposed in front of the rear frame 22, a base portion 231 fixed to the upper end of the rear frame 22, and a pair of front ends extending from both ends of the base portion 231 A guide frame 23 having a guide portion 232, a transparent front panel 24 having an upper edge fixed to the tip of the guide portion 232, and a lower edge locked to the front side (front side) of the frame-like base frame 21, A transparent top panel 25 supported by a pair of guide portions 232 of the guide frame 23 so as to be slidable in the front-rear direction, each guide portion 232 of the guide frame 23 and a frame-shaped base The left and right sides of the frame 21 (left side edge, right side edge) and a side panel 26, 27 of the transparent right slidably supported in the longitudinal direction between the.
 リアフレーム22及びインナーパネル28は金属製であり、枠状ベースフレーム21は樹脂で成形されている。ガイドフレーム23は、基部231とガイド部232とが樹脂で一体成形されている。フロントパネル24、トップパネル25及びサイドパネル26、27は、透明なガラスまたはアクリル板で構成されている。
 枠状ベースフレーム21の左右の側方辺には、スライドするサイドパネル26、27のガイド部212が設けられている。
 リアフレーム22は、枠状ベースフレーム21の後方辺に螺子固定される取付け部222を下縁に有し、また、ガイドフレーム23の基部231に螺子固定される取付け部221を上縁に有している。
The rear frame 22 and the inner panel 28 are made of metal, and the frame-shaped base frame 21 is formed of resin. In the guide frame 23, a base portion 231 and a guide portion 232 are integrally formed of resin. The front panel 24, the top panel 25, and the side panels 26 and 27 are made of transparent glass or an acrylic plate.
Guide portions 212 of sliding side panels 26 and 27 are provided on the left and right side sides of the frame-shaped base frame 21.
The rear frame 22 has a mounting portion 222 screwed to the rear side of the frame-shaped base frame 21 at the lower edge, and has a mounting portion 221 screwed to the base 231 of the guide frame 23 at the upper edge. ing.
 また、リアフレーム22は、両側縁が内側に折り返されており、この折り返し片にインナーパネル28を保持するインナーパネルホルダ281が固定される。インナーパネルホルダ281は、リアフレーム22の折り返し片が嵌る溝を有しており、インナーパネルホルダ281をリアフレーム22の折り返し片に固定したとき、折り返し片は、インナーパネルホルダ281によって覆われる。
 リアフレーム22の折り返し片に固定された一対のインナーパネルホルダ281は、互いに向き合う面にインナーパネル28の側縁が嵌合する溝を有しており、インナーパネル28は、この溝によって保持され、また、インナーパネル28を上方に引き抜くとき、この溝によってガイドされる。
 インナーパネル28は、風防装置20が秤本体10に装着されたとき、秤量皿11と接触しないように、中央に凹部が設けられている。
The rear frame 22 has both side edges folded back inward, and an inner panel holder 281 that holds the inner panel 28 is fixed to the folded piece. The inner panel holder 281 has a groove into which the folded piece of the rear frame 22 is fitted. When the inner panel holder 281 is fixed to the folded piece of the rear frame 22, the folded piece is covered by the inner panel holder 281.
The pair of inner panel holders 281 fixed to the folded pieces of the rear frame 22 has grooves in which the side edges of the inner panel 28 are fitted to the surfaces facing each other, and the inner panel 28 is held by the grooves, Further, when the inner panel 28 is pulled upward, it is guided by this groove.
The inner panel 28 is provided with a recess at the center so that the windshield device 20 is not attached to the weighing pan 11 when the windshield device 20 is mounted on the scale body 10.
 ガイドフレーム23のガイド部232の先端側には、フロントパネル24の固定ボルト241を受け入れる螺子孔が設けられており、フロントパネル24は、上縁が固定ボルト241によりガイドフレーム23のガイド部232に結合され、下縁が枠状ベースフレーム21の前方辺のフロントパネルホルダ部211に係止されて固定される。
 また、スライドするトップパネル25及びサイドパネル26、27には、ノブ251、261、271が固定ボルト252、262、272で固定される。
 フロントパネル24、トップパネル25及びサイドパネル26、27の内側には、透明な導電被膜(ITO被膜など)が形成されている。これらの導電被膜は、後述するように、最終的に、秤本体10の内部と導通するシールド板12に電気的に接続する。
 シールド板12の四辺は、縁部が立上っており、前方辺の立上がり縁には二箇所に切欠き穴121が形成され、後方辺の立上がり縁には中央の一箇所に切欠き穴122が形成されている。
A screw hole for receiving the fixing bolt 241 of the front panel 24 is provided on the distal end side of the guide portion 232 of the guide frame 23, and the front edge of the front panel 24 is fixed to the guide portion 232 of the guide frame 23 by the fixing bolt 241. Combined, the lower edge is locked and fixed to the front panel holder portion 211 on the front side of the frame-shaped base frame 21.
Further, knobs 251, 261, 271 are fixed to the sliding top panel 25 and side panels 26, 27 by fixing bolts 252, 262, 272, respectively.
A transparent conductive film (such as an ITO film) is formed inside the front panel 24, the top panel 25, and the side panels 26 and 27. As will be described later, these conductive films are finally electrically connected to the shield plate 12 that is electrically connected to the inside of the scale body 10.
The four sides of the shield plate 12 are raised at the edges, two notched holes 121 are formed at the rising edge of the front side, and the notched holes 122 are formed at one central position at the rising edge of the rear side. Is formed.
 図4は、枠状ベースフレーム21の裏側を示している。枠状ベースフレーム21の前方辺の裏面には、シールド板12の切欠き穴121に係合する二つの爪213が内向きに形成されている。また、枠状ベースフレーム21の左右の側方辺は、シールド板12の左右の立上がり縁が当接する内側面214を裏面に有している。また、枠状ベースフレーム21の後方辺は、前方辺や左右側方辺と違って、裏面に外周壁を有していない。これは、後述するラッチ40の爪が枠状ベースフレーム21の下側に入り込めるようにするためである。 FIG. 4 shows the back side of the frame-shaped base frame 21. On the back surface of the front side of the frame-shaped base frame 21, two claws 213 that engage with the cutout holes 121 of the shield plate 12 are formed inward. Further, the left and right side sides of the frame-shaped base frame 21 have inner side surfaces 214 with which the left and right rising edges of the shield plate 12 abut on the back surface. Further, the rear side of the frame-shaped base frame 21 does not have an outer peripheral wall on the back surface, unlike the front side and the left and right side sides. This is for the purpose of allowing the claws of the latch 40 described later to enter the lower side of the frame-like base frame 21.
 ラッチ40は、図1(b)に示すように、リアフレーム22の外面の下縁に固定されている。このラッチ40は、シールド板12の後方辺の立上がり縁に形成された切欠き穴122に係合する爪を備えている。
 図5に示すように、このラッチ40は、リアフレーム22の下縁に固定されたベース部41と、ベース部41にヒンジ部42を介して水平方向に回動可能に支持された回動部43と、回動部43の下縁から斜め下方に延びるシールド抑え部44と、ベース部41に重なる位置まで回動された回動部43を係止するスナップ部45とを有しており、切欠き穴122に係合する爪441は、シールド抑え部44に形成されている。
 この爪441は、秤本体10に風防装置20を装着した状態で、回動部43をベース部41に重なるまで回動し、回動部43をスナップ部45に係止させると、シールド板12の後方辺の切欠き穴122に係合する。このとき、爪441の両側部442は、シールド板12の後方辺の立上がり縁に当接する。
The latch 40 is fixed to the lower edge of the outer surface of the rear frame 22 as shown in FIG. The latch 40 includes a claw that engages with a notch hole 122 formed at the rising edge of the rear side of the shield plate 12.
As shown in FIG. 5, the latch 40 includes a base portion 41 fixed to the lower edge of the rear frame 22, and a rotating portion supported by the base portion 41 so as to be horizontally rotatable via a hinge portion 42. 43, a shield holding portion 44 extending obliquely downward from the lower edge of the rotating portion 43, and a snap portion 45 for locking the rotating portion 43 rotated to a position overlapping the base portion 41, A claw 441 that engages with the notch hole 122 is formed in the shield holding portion 44.
When the windshield device 20 is mounted on the scale body 10 and the claw 441 rotates until the rotating portion 43 overlaps the base portion 41 and the rotating portion 43 is locked to the snap portion 45, the shield plate 12. Is engaged with a notch hole 122 on the rear side of the. At this time, both side portions 442 of the claw 441 abut on the rising edge of the rear side of the shield plate 12.
 図6は、秤本体10に風防装置20を装着する手順を示している。
 ラッチ40の回動部43をスナップ部45から開放した状態で、図6(a)に示すように、風防装置20を秤本体10の上に載せる。このとき、シールド板12の左右の立上がり縁は、枠状ベースフレーム21の左右側方辺の裏側内側面214に当接し、秤本体10に対する風防装置20の横方向の位置が規制される。
 次いで、図6(b)の矢印方向に風防装置20を移動させる。この移動により、枠状ベースフレーム21の前方辺の裏面に形成された爪213は、シールド板12の切欠き穴121に前側から係合する。移動後の風防装置20と秤本体10とを図7に示している。
FIG. 6 shows a procedure for mounting the windshield device 20 on the scale body 10.
With the rotating portion 43 of the latch 40 released from the snap portion 45, the windshield device 20 is placed on the balance body 10 as shown in FIG. At this time, the left and right rising edges of the shield plate 12 come into contact with the rear inner side surfaces 214 on the left and right sides of the frame-like base frame 21, and the lateral position of the windshield device 20 with respect to the scale body 10 is restricted.
Next, the windshield device 20 is moved in the direction of the arrow in FIG. By this movement, the claw 213 formed on the back surface of the front side of the frame-shaped base frame 21 is engaged with the notch hole 121 of the shield plate 12 from the front side. FIG. 7 shows the windshield device 20 and the balance body 10 after the movement.
 次に、ラッチ40の回動部43をベース部41に重なる位置まで回動して、回動部43をスナップ部45に係止させる。この操作で、ラッチ40のシールド抑え部44に形成された爪441が、シールド板12の後方辺の切欠き穴122に後ろ側から係合し、同時に、シールド抑え部44の両側部442が、シールド板12の後方辺の立上がり縁に当接する。
 そのため、秤本体10に対する風防装置20の前後方向の位置は、枠状ベースフレーム21の前方辺の裏面に形成された爪213と、ラッチ40のシールド抑え部44とが、シールド板12を前後から挟み込むことで固定される。また、左右方向の位置は、シールド板12の左右の立上がり縁が、枠状ベースフレーム21の左右側方辺の裏側内側面214に当接することで固定される。
 また、逆の操作を行うことで風防装置20を秤本体10から取り外すことができる。
Next, the turning portion 43 of the latch 40 is turned to a position overlapping the base portion 41, and the turning portion 43 is locked to the snap portion 45. By this operation, the claw 441 formed on the shield holding portion 44 of the latch 40 is engaged with the notch hole 122 on the rear side of the shield plate 12 from the rear side, and at the same time, both side portions 442 of the shield holding portion 44 are It contacts the rising edge of the rear side of the shield plate 12.
Therefore, the position of the windshield device 20 in the front-rear direction with respect to the balance body 10 is determined by the claw 213 formed on the back surface of the front side of the frame-shaped base frame 21 and the shield restraining portion 44 of the latch 40 from the front and rear. It is fixed by pinching. Also, the position in the left-right direction is fixed by the left and right rising edges of the shield plate 12 coming into contact with the back-side inner surface 214 of the left and right sides of the frame-like base frame 21.
Further, the windshield device 20 can be detached from the scale body 10 by performing the reverse operation.
 なお、図8(a)(b)に示すように、枠状ベースフレーム21の裏面に形成する爪213や、ラッチ40のシールド抑え部44に形成する爪441は、爪の先端から離れる程、厚さが増すように表面を傾斜させることが望ましい。こうすることで、爪213、441と切欠き穴121、122との間にギャップが生じないように両者を係合させることができ、秤本体10に対して風防装置20を、ガタの無い、安定的な状態で装着することができる。 As shown in FIGS. 8A and 8B, the claw 213 formed on the back surface of the frame-shaped base frame 21 and the claw 441 formed on the shield holding portion 44 of the latch 40 are further away from the tip of the claw. It is desirable to incline the surface to increase the thickness. By doing so, both can be engaged so that a gap does not occur between the claws 213 and 441 and the cutout holes 121 and 122, and the windshield device 20 is not loosened against the scale body 10. Can be mounted in a stable state.
 このように、この風防装置20は、秤本体10への着脱をワンタッチで実行することができる。そのため、風防装置20を秤本体10から取り外して秤量皿11や風防装置20の内部を清掃し、清掃後に再び組み立てるような場合、その作業が簡単である。 Thus, the windshield device 20 can be attached to and detached from the scale body 10 with a single touch. Therefore, when the windshield device 20 is removed from the scale body 10 to clean the inside of the weighing pan 11 and the windshield device 20 and then reassembled after cleaning, the operation is simple.
 また、この風防装置20は、図1(a)に示すように、計量空間が、フロントパネル24、トップパネル25、サイドパネル26、27及びインナーパネル28で区切られている。この内、トップパネル25及びサイドパネル26、27は、後方にスライドさせて取り外すことが可能であり、インナーパネル28は、図9に示すように、トップパネル25を取り外した状態で上方に引き抜くことができる。 Further, as shown in FIG. 1A, the windshield device 20 has a measuring space divided by a front panel 24, a top panel 25, side panels 26 and 27, and an inner panel 28. Of these, the top panel 25 and the side panels 26 and 27 can be slid rearward and removed, and the inner panel 28 is pulled upward with the top panel 25 removed as shown in FIG. Can do.
 そのため、風防装置20の内部が被計量物で汚れた場合に、風防装置20を秤本体10から外して、あるいは、風防装置20を秤本体10に装着したまま、フロントパネル24やトップパネル25、サイドパネル26、27あるいはインナーパネル28を風防装置20から取り外して清掃することができる。
 この風防装置20において、リアパネル22を取り外すことは困難であるが、リアパネル22は、インナーパネル28に覆われているため、リアパネル22の内側は計量空間に露出しておらず、被計量物により汚れる虞はない。
Therefore, when the inside of the windshield device 20 is contaminated with an object to be weighed, the windscreen device 20 is removed from the scale body 10 or the windscreen device 20 is attached to the scale body 10 while the front panel 24, the top panel 25, The side panels 26 and 27 or the inner panel 28 can be removed from the windshield device 20 and cleaned.
In this windshield device 20, it is difficult to remove the rear panel 22. However, since the rear panel 22 is covered with the inner panel 28, the inner side of the rear panel 22 is not exposed to the measuring space and is soiled by the object to be weighed. There is no fear.
 また、この風防装置20では、シールド機能を保持するため、図10に示すように、スライドしないフロントパネル24に形成された導電被膜は、導電路1によりシールド板12に電気的に接続する。また、スライドするトップパネル25、サイドパネル26、27に形成された導電被膜は、それぞれ、導電路6、導電路2、導電路3により金属製のリアパネル22に電気的に接続し、リアパネル22を、導電路5によりシールド板12に電気的に接続する。また、金属製のインナーパネル28は、下端をシールド板12に直接接触させる(導電路4)。
 この導電路1、導電路2、導電路3、導電路5、導電路6は、板バネのような接触部材を用いて形成される。
Further, in this windshield device 20, the conductive coating formed on the non-sliding front panel 24 is electrically connected to the shield plate 12 by the conductive path 1 as shown in FIG. The conductive coating formed on the sliding top panel 25 and side panels 26 and 27 is electrically connected to the metal rear panel 22 through the conductive path 6, the conductive path 2 and the conductive path 3, respectively. The conductive path 5 is electrically connected to the shield plate 12. Moreover, the metal inner panel 28 makes the lower end directly contact the shield plate 12 (conductive path 4).
The conductive path 1, the conductive path 2, the conductive path 3, the conductive path 5, and the conductive path 6 are formed using a contact member such as a leaf spring.
 図11は、導電路1を形成する接触部材の一例を示している。この接触部材50は、枠状ベースフレーム21の前方辺の溝に配置されて、この溝に挿入されたフロントパネル24の下部の内面(導電被膜が形成された面)に弾接するフロントパネル導電被膜接触部501と、シールド板12に弾接するシールド板接触部502とを有している。この接触部材50により、フロントパネル24の導電被膜はシールド板12に電気的に接続する。 FIG. 11 shows an example of a contact member that forms the conductive path 1. The contact member 50 is disposed in a groove on the front side of the frame-like base frame 21 and elastically contacts the lower inner surface (surface on which the conductive film is formed) of the front panel 24 inserted in the groove. A contact portion 501 and a shield plate contact portion 502 that elastically contacts the shield plate 12 are provided. With this contact member 50, the conductive coating on the front panel 24 is electrically connected to the shield plate 12.
 また、図12は、導電路3及び導電路6を形成する接触部材の一例を示している。この接触部材51は、トップパネル25の内面に接触するトップパネル導電被膜接触部511と、サイドパネル27の内面に接触するサイドパネル導電被膜接触部512とを有しており、接触部材51の基部が、ガイドフレーム23の基部231と共に、螺子でリアパネル22の取付け部221に固定される。この接触部材51により、トップパネル25及びサイドパネル27の導電被膜は、リアパネル22に電気的に接続する。 FIG. 12 shows an example of a contact member that forms the conductive path 3 and the conductive path 6. The contact member 51 includes a top panel conductive film contact portion 511 that contacts the inner surface of the top panel 25 and a side panel conductive film contact portion 512 that contacts the inner surface of the side panel 27. However, together with the base portion 231 of the guide frame 23, it is fixed to the attachment portion 221 of the rear panel 22 with screws. By this contact member 51, the conductive coatings of the top panel 25 and the side panel 27 are electrically connected to the rear panel 22.
 また、図13(a)(b)は、導電路5を形成する接触部材の一例を示している。この接触部材52は、図13(b)に示すように、シールド板12に接触する一対のシールド板接触片521を有し、一対のシールド板接触片521の間に、螺子止めされる孔を有している。この接触部材52は、図13(a)に示すように、枠状ベースフレーム21の裏面に配置され、枠状ベースフレーム21と共に、螺子でリアパネル22の取付け部222に固定される。この接触部材52により、リアパネル22は、シールド板12に電気的に接続する。 FIGS. 13A and 13B show an example of a contact member that forms the conductive path 5. As shown in FIG. 13B, the contact member 52 has a pair of shield plate contact pieces 521 that contact the shield plate 12, and a screwed hole is provided between the pair of shield plate contact pieces 521. Have. As shown in FIG. 13A, the contact member 52 is disposed on the back surface of the frame-shaped base frame 21, and is fixed to the attachment portion 222 of the rear panel 22 together with the frame-shaped base frame 21 with screws. The rear panel 22 is electrically connected to the shield plate 12 by the contact member 52.
 このように、この風防装置20は、秤本体10への着脱が可能であり、また、トップパネル25及びサイドパネル26、27がスライド可能であっても、シールド機能を維持することができ、秤本体10の計量精度に影響を与える静電気を逃がして、計量精度の低下を抑えることができる。
 なお、ここで示した構成は、一例であって、本発明は、その構成だけに限定されるものではない。
As described above, the windshield device 20 can be attached to and detached from the scale body 10 and can maintain the shield function even when the top panel 25 and the side panels 26 and 27 are slidable. Static electricity that affects the measurement accuracy of the main body 10 can be released, and a decrease in measurement accuracy can be suppressed.
In addition, the structure shown here is an example, Comprising: This invention is not limited only to the structure.
 本発明の秤用風防装置は、秤本体への着脱や内部の清掃が容易であり、様々な環境で計量が行われる秤に広く適用することができる。 The windshield device for a scale according to the present invention can be easily attached to and detached from the scale body and cleaned inside, and can be widely applied to scales that perform weighing in various environments.
 10  秤本体
 11  秤量皿
 12  シールド板
 20  風防装置
 21  枠状ベースフレーム
 22  リアフレーム
 23  ガイドフレーム
 24  フロントパネル
 25  トップパネル
 26  サイドパネル
 27  サイドパネル
 28  インナーパネル
 40  ラッチ
 41  ベース部
 42  ヒンジ部
 43  回動部
 44  シールド抑え部
 45  スナップ部
 50  接触部材
 51  接触部材
 52  接触部材
 121 切欠き穴
 122 切欠き穴
 211 フロントパネルホルダ部
 212 サイドパネルガイド部
 213 爪
 214 内側面
 221 取付け部
 222 取付け部
 231 基部
 232 ガイド部
 241 フロントパネル固定ボルト
 251 ノブ
 252 ノブ固定ボルト
 261 ノブ
 262 ノブ固定ボルト
 271 ノブ
 272 ノブ固定ボルト
 281 インナーパネルホルダ
 441 爪
 442 爪の両側部
 501 フロントパネル導電被膜接触部
 502 シールド板接触部
 511 トップパネル導電被膜接触部
 512 サイドパネル導電被膜接触部
 521 シールド板接触片
DESCRIPTION OF SYMBOLS 10 Scale main body 11 Weighing pan 12 Shield plate 20 Windshield device 21 Frame-shaped base frame 22 Rear frame 23 Guide frame 24 Front panel 25 Top panel 26 Side panel 27 Side panel 28 Inner panel 40 Latch 41 Base part 42 Hinge part 43 Turning part 44 Shield holding part 45 Snap part 50 Contact member 51 Contact member 52 Contact member 121 Notch hole 122 Notch hole 211 Front panel holder part 212 Side panel guide part 213 Claw 214 Inner side surface 221 Attachment part 222 Attachment part 231 Base part 232 Guide part 241 Front panel fixing bolt 251 Knob 252 Knob fixing bolt 261 Knob 262 Knob fixing bolt 271 Knob 272 Knob fixing bolt 281 Inner panel holder 4 1 pawl 442 claw sides 501 front panel conductive coating contact portion 502 shield plate contacting portion 511 top panel conductive coating contact portion 512 side panel conductive coating contact portion 521 shield plate contact piece

Claims (8)

  1.  秤量皿を支える支軸が上面から突出し、前記上面に固定された四角形状のシールド板が前記支軸の周囲を除く前記上面の略全面を覆っている秤本体に、前記シールド板を介して装着される風防装置であって、
     前記シールド板の外周に対応する四角形状に樹脂成形された枠状ベースフレームと、
     前記枠状ベースフレームの後方辺上に立設される金属製のリアフレームと、
     前記リアフレームの上端に固定される基部、及び該基部の両端から前方に延出する一対のガイド部を有し、前記基部及びガイド部が一体に樹脂成形されたガイドフレームと、
     前記ガイドフレームのガイド部の先端に上縁が固定され、前記枠状ベースフレームの前方辺に下縁が係止される透明なフロントパネルと、
     前記ガイドフレームの一対のガイド部により前後方向にスライド可能に支持される透明なトップパネルと、
     前記ガイドフレームの各ガイド部と前記枠状ベースフレームの左右側方辺との間で前後方向にスライド可能に支持される透明な左右のサイドパネルと、
    を備え、
     前記シールド板が、対向する辺の立上がり縁のそれぞれに切欠き穴を有し、前記切欠き穴のそれぞれに外側から係合する爪が風防装置の側に設けられていることを特徴とする秤用風防装置。
    A support shaft supporting the weighing pan protrudes from the upper surface, and a square shield plate fixed to the upper surface covers the entire upper surface except the periphery of the support shaft, and is attached via the shield plate. A windshield device,
    A frame-shaped base frame resin-molded into a quadrangular shape corresponding to the outer periphery of the shield plate;
    A metal rear frame erected on the rear side of the frame-shaped base frame;
    A guide frame having a base fixed to the upper end of the rear frame, and a pair of guide portions extending forward from both ends of the base, the base and the guide being integrally molded with resin;
    A transparent front panel having an upper edge fixed to the tip of the guide portion of the guide frame and a lower edge locked to the front side of the frame-shaped base frame;
    A transparent top panel supported by a pair of guide portions of the guide frame so as to be slidable in the front-rear direction;
    Transparent left and right side panels supported so as to be slidable in the front-rear direction between each guide portion of the guide frame and the left and right sides of the frame-shaped base frame,
    With
    The shield plate has a notch hole on each of the rising edges of the opposing sides, and a claw that engages with each of the notch holes from the outside is provided on the windshield device side. Windshield device.
  2.  請求項1に記載の秤用風防装置であって、前記シールド板の前方辺の立上がり縁及び後方辺の立上がり縁に前記切欠き穴が形成され、前記シールド板の前方辺の立上がり縁に形成された前記切欠き穴に係合する前記爪が、前記枠状ベースフレームの前方辺の裏面に内向きに設けられており、前記シールド板の後方辺の立上がり縁に形成された前記切欠き穴に係合する前記爪が、前記リアフレームの外面に固定されたラッチに設けられており、
     前記ラッチは、前記リアフレームに固定されたベース部と、前記ベース部にヒンジ部を介して水平方向に回動可能に支持された回動部と、前記回動部の下縁から下方に延びるシールド抑え部と、前記シールド抑え部に設けられた前記爪と、前記ベース部に重なる位置まで回動された前記回動部を係止するスナップ部と、を具備し、前記回動部が前記スナップ部に係止された状態で前記シールド抑え部の前記爪が、前記シールド板の後方辺の立上がり縁に形成された前記切欠き穴に係合することを特徴とする秤用風防装置。
    The scale windshield device according to claim 1, wherein the notch hole is formed in the rising edge of the front side and the rising edge of the rear side of the shield plate, and is formed in the rising edge of the front side of the shield plate. The claw that engages with the notch hole is provided inwardly on the back surface of the front side of the frame-shaped base frame, and the notch hole formed on the rising edge of the rear side of the shield plate. The claw to be engaged is provided on a latch fixed to the outer surface of the rear frame,
    The latch extends downward from a lower edge of the rotating part, a base part fixed to the rear frame, a rotating part supported by the base part via a hinge part so as to be horizontally rotatable. A shield holding portion, the claw provided in the shield holding portion, and a snap portion for locking the rotating portion rotated to a position overlapping the base portion, wherein the rotating portion is the The scale windshield device, wherein the claw of the shield holding portion engages with the notched hole formed in the rising edge of the rear side of the shield plate while being locked to the snap portion.
  3.  請求項2に記載の秤用風防装置であって、前記爪が、爪の先端から離れる程、厚さが増すように成形されていることを特徴とする秤用風防装置。 3. The windshield device for scale according to claim 2, wherein the claw is shaped so as to increase in thickness as the claw is separated from the tip of the claw.
  4.  請求項1から3のいずれかに記載の秤用風防装置であって、前記シールド板の左右側方辺の立上がり縁が、前記枠状ベースフレームの左右側方辺の内側面に当接することを特徴とする秤用風防装置。 It is a windshield device for scales in any one of Claim 1 to 3, Comprising: The rising edge of the left-right side edge of the said shield board contact | abuts to the inner surface of the left-right side edge of the said frame-shaped base frame. Characteristic draft shield device.
  5.  請求項1から4のいずれかに記載の秤用風防装置であって、秤量皿より後方で前記リアフレームより前方の位置に、前記リアフレームの内側を覆う金属製のインナーパネルが配置され、前記インナーパネルが、前記トップパネルを取り外した後、上方向に引き抜くことが可能であることを特徴とする秤用風防装置。 5. The windshield device for scale according to claim 1, wherein a metal inner panel that covers an inner side of the rear frame is disposed at a position behind the weighing pan and in front of the rear frame, A windshield device for scale, wherein the inner panel can be pulled upward after the top panel is removed.
  6.  請求項5に記載の秤用風防装置であって、前記リアフレームの内側に折り返した両側縁に、前記インナーパネルを保持するとともに、引き抜かれるときの前記インナーパネルをガイドするインナーパネルホルダが取り付けられていることを特徴とする秤用風防装置。 6. The windshield device for scale according to claim 5, wherein an inner panel holder for holding the inner panel and guiding the inner panel when pulled out is attached to both side edges folded inside the rear frame. A windshield device for a scale characterized by comprising:
  7.  請求項1から6のいずれかに記載の秤用風防装置であって、前記フロントパネル、トップパネル及びサイドパネルの内面に透明な導電被膜がコーティングされており、前記フロントパネルに形成された導電被膜は、前記枠状ベースフレームの前方辺に配置されたバネ性の接触部材を介して前記シールド板に電気接続し、前記トップパネル及びサイドパネルに形成された導電被膜は、前記ガイドフレームの前記基部に配置されたバネ性の接触部材を介して前記リアフレームに電気接続し、前記リアフレームは、前記枠状ベースフレームの後方辺に配置されたバネ性の接触部材を介して前記シールド板に電気接続することを特徴とする秤用風防装置。 The windshield device for scale according to any one of claims 1 to 6, wherein a transparent conductive film is coated on inner surfaces of the front panel, top panel, and side panel, and the conductive film formed on the front panel Is electrically connected to the shield plate via a spring-like contact member disposed on the front side of the frame-shaped base frame, and the conductive coating formed on the top panel and the side panel is the base portion of the guide frame. The rear frame is electrically connected to the rear frame via a spring-like contact member arranged on the frame, and the rear frame is electrically connected to the shield plate via a spring-like contact member arranged on the rear side of the frame-like base frame. A windshield device for a scale characterized by being connected.
  8.  請求項7に記載の秤用風防装置であって、前記インナーパネルの下端が前記シールド板に接触して、前記インナーパネルと前記シールド板とが電気接続することを特徴とする秤用風防装置。 8. The windshield device for scale according to claim 7, wherein a lower end of the inner panel is in contact with the shield plate, and the inner panel and the shield plate are electrically connected.
PCT/JP2013/072748 2012-08-31 2013-08-26 Wind blocking device for scale WO2014034611A1 (en)

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JP2017219501A (en) * 2016-06-10 2017-12-14 新光電子株式会社 Windshield device for balance
CN109073450A (en) * 2016-07-26 2018-12-21 株式会社爱安德 Meter hurricane globe
JP2019184592A (en) * 2018-04-17 2019-10-24 メトラー−トレド ゲーエムベーハー Laboratory balance with weighing chamber rear wall of modular construction

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JP2017219501A (en) * 2016-06-10 2017-12-14 新光電子株式会社 Windshield device for balance
CN109073450A (en) * 2016-07-26 2018-12-21 株式会社爱安德 Meter hurricane globe
JP2019184592A (en) * 2018-04-17 2019-10-24 メトラー−トレド ゲーエムベーハー Laboratory balance with weighing chamber rear wall of modular construction
JP7236300B2 (en) 2018-04-17 2023-03-09 メトラー-トレド ゲーエムベーハー Electronic balance with modular weighing chamber rear wall

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JPWO2014034611A1 (en) 2016-08-08
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