JP2017219501A - Windshield device for balance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a windshield device that does not require an excess space in the rear when being installed.SOLUTION: Provided is a windshield device which can be attached to and detached from a balance main body in a single operation, the windshield device being configured such that: side panels thereof each includes two divided side panels 32 and 33; a rear frame 54 of a base frame is arranged in front of the rear end of right and left side frames 52; and the rear frame 54 has single operation engagement means 544 fixed thereto, which can be attached to and detached from an engagement part of the balance main body in a single operation. Because the side panel includes two divided side panels 32 and 33, the divided side panels 32 and 33 do not protrude out from the rear of the windshield device even in a fully-opened state, and also, the single operation engagement means 544 does not protrude out from the rear of the windshield device. When cleaning, the divided panels 32 and 33 can be pulled out from the rear of the windshield device after removing the windshield device from the balance main body, therefore, the windshield device does not require an excess space to be secured in the rear thereof.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a windshield device for a scale, and is configured so that it can be easily attached to and removed from a scale body and installed in a narrow place.

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, it has been conventionally performed to install a windshield case so as to surround the weighing pan. When setting the sample on the weighing pan, open the windshield case window and close the window to shut off the air flow during measurement.The sample enclosed inside the windshield case may be scattered and contaminated. Sometimes cleaning is required.

Patent Document 1 listed below discloses a windshield device configured such that a balance body and a windshield case can be attached and detached with one touch in order to facilitate cleaning of the balance.
As shown in FIG. 22, the windshield device includes a transparent front panel 24, a side panel 26, and a top panel 25, and the side panel 26 and the top panel 25 are mounted even on the scale body 10. The handle can be moved backward to open.
In order to enable the windshield device 20 to be mounted on the balance body 10, an engagement hole 121 is formed at the front rising edge of the shield plate 12 fixed to the scale body 10, and the rear rising edge is engaged. Each hole 122 is formed.
On the other hand, the front frame 22 of the base frame 21 of the windshield device 20 is formed with a claw that engages with the engagement hole 121 on the inside thereof, and as shown in FIG. A latch 27 having a claw 28 that engages with the engagement hole 122 is fixed to the lower end.
In this device, it is possible to open the side panel 26 and the top panel 25 and put a hand from there to clean the circumference of the weighing pan and the inner surface of the windshield device 20, but the windshield device 20 can be removed for easy cleaning. And it can be done perfectly.
However, in this windshield device 20, when the side panel 26 is opened to set the sample on the weighing pan, a part of the side panel 26 pops out behind the windshield device 20. For this reason, the scale cannot be installed unless it is a place where the width of the side panel 26 is allowed to pop out behind the scale.

Patent Document 2 below describes a windshield device that reduces the amount of projection of the side panel to the rear of the balance.
In this windshield device, as shown in FIG. 24A, the side panel is composed of two divided panels 16 and 17. As shown in FIGS. 25 and 26, rotating wheels 25 and 26 are attached to the upper end of the split panel 16, and rotating wheels 23 and 24 are attached to the upper end of the split panel 17. Further, a pinion gear 27 is rotatably supported on the split panel 17, and a lower rack 29 that meshes with the pinion gear 27 is fixed to the split panel 16, and an upper rack 28 that meshes with the pinion gear 27 serves as a guide frame. 22 is fixed.
Therefore, as shown in FIG. 26, when the dividing panel 16 moves rearward, the rearward movement of the dividing panel 17 starts via the pinion gear 27, and as shown in FIG. 24B, the side wall 20 of the rear compartment 10 is obtained. The split panel 16 and the split panel 17 overlap at the position, and the windshield device is fully opened.
Thus, even in the fully opened state, the divided panel 16 and the divided panel 17 do not jump out to the rear of the windshield device.
Further, when the inner surfaces of the divided panels 16 and 17 become dirty, the divided panels 16 and 17 can be pulled out from the rear of the guide frame 22 and cleaned.
In order to remove this windshield device from the balance body, it is necessary to pull out the windshield device upward after removing the weighing pan 3 and the ventilation barrier ring 7 shown in FIG. In this case, when the windshield device is reset in the reverse procedure, readjustment of the balance is essential, and the work load increases.

WO2014 / 034611 JP 2006-30188 A

In the windshield device described in Patent Document 2, since the fully open split panels 16 and 17 do not jump out from the rear side of the windshield device, an extra space is provided behind the windshield device in a state where normal weighing work is performed. Do not need.
However, in order to draw and clean the divided panels 16 and 17 from the rear of the guide frame 22, a space corresponding to at least the width of the divided panels 16 and 17 is required behind the windshield device.
The present invention has been made in consideration of such circumstances, and an object thereof is to provide a windshield device that does not require an extra space behind.

  The present invention relates to a windshield device that can be attached to and detached from the balance body with a single touch, a member that forms a windshield space that prevents ventilation around the weighing pan, and a base frame that is attached to the balance body and supports the member that forms the windshield space And comprising. The members that form the windshield space are the front side transparent front panel, the left and right transparent side panels, the rear side rear panel, and the right side plate on which the right side edge of the rear panel is inserted. And a left side plate frame in which an insertion groove for inserting a left side edge of the rear panel is formed, and the side panel has at least a rotating wheel provided on the upper end side guided by the rotating wheel guide rail. Consists of two split side panels. The base frame is arranged along the moving direction to guide the front frame formed with an insertion groove for inserting the lower side edge of the front panel and the lower end of the divided side panel that moves as the rotating wheel rotates. One-touch engagement means that is formed with insertion grooves for inserting the left and right side frames provided with the guide protrusions arranged intermittently and the lower side edge of the rear panel, and can be attached to and detached from the engagement portion of the scale body with one touch. And a rear frame to which the lower end of the right side plate frame and the left side plate frame are coupled. The front frame, the side frame, and the rear frame are integrated so that the front frame is positioned at the front ends of the left and right side frames and the rear frame is positioned forward of the rear ends of the left and right side frames. It is characterized by having.

  In this windshield device, since the side panel is composed of at least two divided side panels, the divided side panel does not protrude from the rear of the windshield device even in the fully opened state. Further, the operation of pulling out the divided side panel from the rear side of the windshield device may be performed after the windshield device is removed from the main body of the scale, so that it is not necessary to secure an extra space behind the windshield device. Moreover, since the rear panel is composed of a single panel, and the rear frame that defines the position of the rear panel is disposed in front of the rearmost end of the windshield device, the one-touch engagement means fixed to the rear frame is provided. The dimensions of the windshield device in the front-rear direction can be set short without jumping out backward. Therefore, the scale equipped with this windshield device can be installed in a narrow place.

Further, in the windshield device of the present invention, the front frame of the base frame is provided with engagement means with an engagement portion formed at the rising edge on the front side of the shield plate fixed to the scale body, and the side frame has A hanging piece that engages with the outer periphery of the housing of the scale body is provided. Further, the one-touch engaging means fixed to the rear frame is adapted to engage with an engaging portion formed on a rising edge on the rear side of the shield plate.
By engaging the hanging piece of the side frame with the housing of the scale main body, alignment between the engaging means of the front frame and the engaging portion formed on the front rising edge of the shield plate, or one-touch engaging means And the engaging portion formed on the rear rising edge of the shield plate can be easily aligned.

Further, in the windshield device of the present invention, the divided side panels are movable in a state where they are overlapped with each other to a fully open position where the rear edge is behind the rear panel.
By allowing at least a part of the divided side panel to move rearward beyond the rear panel, a wide opening when fully opened can be secured without increasing the size of the windshield device.

Further, in the windshield device of the present invention, the split side panel is restricted by the stopper from moving further rearward from the fully open position, and if the stopper is released, the split side panel can be moved rearward and removed. .
When cleaning the divided side panel, the windshield device is removed from the balance body, the stopper is released, and the divided side panel is removed from the windshield device.

Further, in the windshield device of the present invention, a recess is provided in the edge of the rear end side of the right side plate frame and the left side plate frame, and the part of the split side panel facing the recess is gripped to remove the split side panel from the windshield device. ing.
By carrying out like this, the division | segmentation side panel of the state which mutually overlapped can be taken out from a windshield apparatus collectively.

In the windshield device of the present invention, it is desirable to further include a transparent top panel that forms a windshield space. The upper panel is composed of a plurality of divided upper panels arranged in parallel and an upper panel frame body into which both ends of each of the divided upper panels are inserted, and at least one of the divided upper panels moves within the upper panel frame. Is possible.
The split top panel can be moved within the top panel frame to form an opening in the top panel. You can put your hands through this opening to clean the windshield device or change the sample.

In the windshield device of the present invention, it is desirable that the upper panel frame body has a frame cutout portion on the upper side where the divided upper panel can be put in and out.
The dirty divided top panel can be removed from the top panel frame and cleaned.

In the windshield device of the present invention, the upper frame coupled to the upper side of the right side frame and the left side frame at the upper position of the rear frame, and the side frame at the upper position of the left and right side frames. Left and right guide forming members integrated at both ends of the upper frame, and a guide member cover which is combined with the guide forming members so as to cover the guide forming members and forms a rotating wheel guide rail and a support portion of the upper panel frame body And the upper side edge of the rear panel is inserted into an insertion groove formed in the upper frame, and the upper end of the front panel is formed between the front end of the guide forming member and the guide member cover covering the front end. Sandwiched between.
The front panel and the rear panel are stably supported.

Further, in the windshield device of the present invention, the rear end of the guide member cover is provided with a stopper that restricts movement of the divided side panel further rearward from the fully open position or cancels the restriction.
When this stopper closes the rear end of the rotating wheel guide rail formed by the guide forming member and the guide member cover, the split side panel cannot be removed.

In addition, the windshield device of the present invention has a front panel, a rear panel, a divided side panel, a top panel, a right side frame, a left side frame, and an upper frame in which guide forming members are integrated at the time of shipment. The guide member cover and the base frame are disassembled and shipped.
Therefore, the windshield device can be transported in a compact form, damage during transportation can be avoided, and transportation costs can be reduced.

  The windshield device of the present invention is easy to attach and detach to and from the balance body, and a scale equipped with this windshield device can be installed in a narrow space.

A perspective view of a windshield device according to an embodiment of the present invention mounted on a scale The perspective view which looked at the device of Drawing 1 from another viewpoint Exploded view of the device of FIG. The figure which shows the division | segmentation side panel of the apparatus of FIG. Front view (a), top view (b), and partially enlarged view (c) of the divided side panel of FIG. Front view (a) and top view (b) when split side panels overlap The figure which shows the upper surface panel of the apparatus of FIG. Top view of top panel (a) and AA position cross-sectional view (b) Plan view (a) and BB position cross-sectional view (b) with the top panel opened The figure which shows a state when a division | segmentation upper surface panel is removed from an upper surface panel. The figure which shows the basic skeleton of the windshield apparatus of FIG. The figure which shows the coupling | bonding form of a base frame and a side plate frame Top view of the upper frame integrated with the guide forming member Side view (a) and back view (b) of upper frame in FIG. The figure which looked at the combination form of a guide formation member and a guide member cover from the back side The figure which looked at the combination form of a guide formation member and a guide member cover from the upper surface side Side view of the basic skeleton of FIG. 17A is a cross-sectional view at position AA and FIG. 17B is a cross-sectional view at position BB. The figure which shows the state where the stopper of the rotating wheel guide rail is open The figure which shows the state where the stopper of a rotating wheel guide rail is closed The figure which shows the list of the components disassembled and packed at the time of dispatch of the windshield apparatus of FIG. The figure which shows the conventional windshield device which can be attached to and detached from the scale body with one touch The figure which shows the back side of the apparatus of FIG. The figure which shows the conventional windshield device in which a side panel consists of two division | segmentation side panels. The figure which shows the suspension structure of the rotating wheel of the apparatus of FIG. The figure which shows the mechanism which interlock | cooperates the division | segmentation side panel in the apparatus of FIG.

FIG. 1 is a perspective view of a windshield device 30 according to an embodiment of the present invention mounted on a scale. FIG. 2 is a perspective view of the windshield device 30 from different viewpoints. FIG. 3 shows the windshield device 30 in an exploded manner.
The windshield device 30 includes a transparent front panel 31, two transparent side panels 32 and 33 constituting right and left side panels, a transparent rear panel 36, and an edge on the rear end side thereof. The right and left side plate frames 37, which are partially bent and formed with a recess 371, the upper frame 39 coupled to the upper ends of the right and left side plate frames 37, and the both ends of the upper frame 39 are integrated. From left and right guide forming members 40, a guide member cover 42 combined with the guide forming member 40, two transparent divided upper surface panels 43 and 44, and upper surface panel frames 45 and 46 into which the left and right ends thereof fit. And a base frame 50 for supporting them.

The transparent front panel 31, the divided side panels 32 and 33, the rear panel 36, and the divided upper panels 43 and 44 are made of glass or plastic.
As shown in FIG. 4, the divided side panel 32 and the divided side panel 33 are provided with two rotating wheels 321 and 331 and holding members 322 and 332 for rotatably holding them at their upper ends. FIG. 5 shows a front view (a) and a top view (b), and FIG. 6 shows a front view (a) and a top view (b) in a state where the divided side panel 32 and the divided side panel 33 are overlapped. Is shown.
A handle 324 for opening and closing is attached to the divided side panel 32 located outside the windshield device 30. The holding member 322 of the divided side panel 32 is fixed to the outer surface of the divided side panel 32 so that the two rotating wheels 321 face outward. On the other hand, the holding member 332 of the divided side panel 33 is fixed to the inner surface of the divided side panel 33 so that the two rotating wheels 331 face the inside.

As shown in FIG. 5B, the holding member 322 and the holding member 332 have engaging portions 323 and 333 that protrude in opposite directions to the direction in which the rotating wheel faces, at both ends in the horizontal direction, respectively. The protruding height of the engaging portion 323 and the engaging portion 333 is set to a height that does not contact each other even if the divided side panel 32 and the divided side panel 33 overlap each other. The engaging portion 323 located behind the holding member 322 (on the divided side panel 33 side) has an engagement piece 325 having a length that engages with the engaging portion 333 of the holding member 332 of the divided side panel 33 on the inner side. Is fixed. In addition, the relationship between the engaging part 323 and the engaging piece 325 fixed to it is expanded and shown in FIG.5 (c).
The divided side panel 32 and the divided side panel 33 are arranged so that the engagement piece 325 is between the two engaging portions 333 included in the holding member 332 of the divided side panel 33.

Therefore, even if the divided side panel 32 moves rightward from the state of FIG. 5, the divided side panel 33 does not move until the engaging portion 323 to which the engagement piece 325 is fixed reaches the position of FIG. . When the divided side panel 32 further moves rightward from the state of FIG. 6, the engagement piece 325 pushes the engagement portion 333 of the divided side panel 33, so that the divided side panel 33 moves to the right together with the divided side panel 32. To do.
Conversely, when the divided side panel 32 moves leftward from the state of FIG. 6, the divided side panel 33 moves until the engaging portion 323 to which the engagement piece 325 is fixed reaches the position of FIG. 5. do not do. When the divided side panel 32 further moves leftward from the state of FIG. 5, the engaging piece 325 pulls the engaging portion 333 of the divided side panel 33, so that the divided side panel 33 moves to the left together with the divided side panel 32. To do.
When the side surface of the windshield device 30 is fully opened by such linkage operation, the divided side surface panel 32 and the divided side surface panel 33 are overlapped at the fully opened position to be in the state of FIG. Moreover, when sealing the side surface of the windshield apparatus 30, a side surface is plugged up in the state of FIG.

As shown in FIG. 7, the upper panel 47 includes two transparent divided upper panels 43 and 44, and upper panel frames 45 and 46 into which the left and right ends thereof fit. FIG. 8 shows a plan view (a) of the top panel 47 and a cross-sectional view (b) at the AA position. The upper panel 47 can be opened by moving the divided upper panel 431 having the handle 431 within the upper panel frames 45 and 46. FIG. 9 shows a plan view (a) of the opened top panel 47 and a sectional view (b) at the BB position.
The upper surface panel frames 45 and 46 are provided with grooves for fitting the end portions of the divided upper surface panels 43 and 44, but this groove is located at a position where the end portion of the divided upper surface panel 44 having no handle is accommodated. The groove width is set wide so that the divided upper panel 43 having the handle 431 can move onto the divided upper panel 44.

Further, a cutout portion 451 for cutting out a part of the groove is provided on the upper side of one upper panel frame 45. The length of the notch 451 is set to be slightly larger than the width of the divided upper surface panels 43 and 44. The split upper surface panels 43 and 44 whose ends are fitted to the upper panel frames 45 and 46 can be removed one by one from the cutouts 451. FIG. 10 shows a state where the divided upper panel 43 is removed from the cutout 451 of the upper panel frame 45.
Further, the upper panel frames 45 and 46 are provided with protruding strips 48 used for supporting the upper panel 47 on the outer surface.

As shown in FIGS. 3, 11, and 12, the base frame 50 includes a front frame 51 in which an insertion groove 511 for inserting a lower side edge of the front panel 31 is formed, and lower ends of the divided side panels 32 and 33. The left and right side frames 52 having guide protrusions 521 arranged intermittently along the moving direction and a rear frame in which an insertion groove 541 for inserting a lower side edge of the rear panel 36 is formed. 54, and they are integrated.
As shown in FIG. 12, the base frame 50 is configured such that the front frame 51 is positioned at the front end of the side frame 52 and the rear frame 54 is positioned at the front side of the rear end of the side frame 52.

The front frame 51 has a claw 512 (FIG. 12) that fits into an engagement hole 71 provided on a front rising edge of the shield plate 70 fixed to the balance body when the windshield device 30 is attached to the scale body. )have.
The side frame 52 has a hanging piece 522 that comes into contact with the casing side surface of the scale body when the windshield device 30 is mounted on the scale body.
Further, the rear frame 54 has side plate fixing portions 542 to which the coupling portions 372 at the lower end of the side plate frame 37 are fixed at both ends thereof. On the rear surface, one-touch engagement means (cam lever) 544 that can be attached to and detached from the engagement hole provided on the rising edge on the rear side of the shield plate 70 with one touch when the windshield device 30 is attached to or removed from the balance body. (FIG. 2) is fixed.

FIG. 11 shows a state in which the coupling portion 372 of the side plate frame 37 is coupled to the side plate fixing portion 542 of the rear frame 54.
FIG. 12 shows the coupling method.
The side plate frame 37 has a coupling portion 372 having the same shape at the lower end and the upper end.
As shown in FIG. 12A, the side plate fixing portion 542 has two engagement holes 546 at positions displaced from the center of the surface with which the bottom surface of the coupling portion 372 contacts, and penetrates the surface orthogonal to the surface. A hole 545 is provided. On the other hand, as shown in FIG. 12B, the coupling portion 372 has two protrusions 373 on the contact surface with the side plate fixing portion 542, and has a screw hole 374 on a surface orthogonal to the surface. .
When the side plate frame 37 is fixed to the rear frame 54, the two protrusions 373 of the coupling portion 372 are fitted into the two engagement holes 546 of the side plate fixing portion 542. Then, since the position of the through hole 545 of the side plate fixing portion 542 and the position of the screw hole 374 of the coupling portion 372 coincide, the screw 65 is inserted from the side of the through hole 545 and screwed into the screw hole 374, and the rear frame The side plate frame 37 is fixed to 54.

The left and right side plate frames 37 have insertion grooves 376 into which the left and right side edges of the rear panel 36 are inserted. When the left and right side plate frames 37 are fixed to the rear frame 54, the insertion grooves 376 are formed in the rear frame. It is connected to 54 insertion grooves 541.
The upper frame 39 in which the guide forming member 40 is integrated is coupled to the coupling portions 372 at the upper ends of the left and right side plate frames 37 fixed to the rear frame 54.
FIG. 13 is a plan view of the upper frame 39 in which the left and right guide forming members 40 are integrated, FIG. 14A is a side view thereof, and FIG. 14B is a rear view thereof. FIG. 15 shows a perspective view seen from below.

The upper frame 39 has side plate fixing portions 392 similar to the side plate fixing portion 542 of the rear frame 54 at both ends thereof. The side plate fixing portion 392 has two engagement holes 394 into which two projections 373 provided in the coupling portion 372 at the upper end of the side plate frame 37 are fitted, and a through hole 395 facing the screw hole 374 of the coupling portion 372. doing.
The method of connecting the side plate frame 37 and the upper frame 39 is the same as the method of connecting the side plate frame 37 and the rear frame 54, and the two protrusions 373 of the connecting portion 372 are inserted into the two engaging holes 394 of the side plate fixing portion 392. The screw is inserted from the side of the through hole 395 and screwed into the screw hole 374 of the coupling portion 372, and the left and right side plate frames 37 are fixed to the upper frame 39.
The upper frame 39 includes an insertion groove 391 into which the upper side edge of the rear panel 36 is inserted. After the lower frame and the left and right side edges of the rear panel 36 are fitted in the insertion grooves 541 and 376 of the rear frame 54 and the left and right side plate frames 37, the upper frame 39 and the left and right side plate frames 37 are joined together. All side edges of the panel 36 are held by the rear frame 54, the left and right side plate frames 37, and the upper frame 39.

As illustrated in FIG. 16, the guide member cover 42 includes a fixing piece 421 having a through hole 422. When the side plate fixing portion 392 of the upper frame 39 and the coupling portion 372 of the side plate frame 37 are fixed with screws, the position of the through hole 422 of the guide member cover 42 that covers the guide forming member 40 is set to the side plate fixing portion 392 of the upper frame 39. The tip of the screw inserted into the through hole 432 and the through hole 395 is screwed into the screw hole 374 of the coupling portion 372 so as to coincide with the position of the through hole 395.
By doing so, the guide member cover 42 can be coupled to the upper frame 39 and the guide forming member 40 fixed to the side plate frame 37 (FIG. 15).

  Further, the upper end of the front panel 31 is sandwiched between the front end of the guide forming member 40 and the guide member cover 42 covering the front end. The front panel 31 is stable because the lower side edge fits into the insertion groove 511 of the front panel 31 and the upper end is sandwiched between the guide member cover 42 and the guide forming member 40.

The guide member cover 42 combined with the guide forming member 40 cooperates with the guide forming member 40 to form rotating wheel guide rails of rotating wheels 321 and 331 attached to the divided side panels 32 and 33, and The support part which supports the protrusion piece 48 of the upper surface panel 47 is comprised.
FIG. 17 is a side view of the windshield skeleton shown in FIG. 11. FIG. 18 (a) shows a cross-sectional view at the AA position in FIG. 17, and FIG. 18 (A) shows a cross-sectional view at the BB position. This is shown in b). The AA position corresponds to the position where the limiting member 424 for preventing the inner divided side panel 33 from moving forward is provided as shown in FIG.
The guide member cover 42 is configured so that the rail portion 425 of the rotating wheel 321 provided on the outer divided side panel 32 is moved over the entire movable range of the divided side panel 32 (that is, between the front end and the rear end of the guide member cover 42). ).
The guide forming member 40 moves the rail portion 402 of the rotating wheel 331 provided on the inner divided side panel 33 from the movable range of the divided side panel 32 (that is, from the position of the limiting member 424 to the rear end of the guide forming member 40). Between).
Further, the guide forming member 40 has a support portion 403 that supports the protrusion strip 48 of the top panel 47, and the guide member cover 42 has a restraining portion 423 that suppresses the protrusion strip 48 placed on the support portion 403 from above. Have.

  As shown in FIG. 19, the rotating wheel guide rail 60 constituted by the rail portion 425 of the guide member cover 42 and the rail portion 402 of the guide forming member 40 extends to the rear end of the guide member cover 42. A stopper 61 is provided at the rear end of the cover 42 to prevent the split side panels 32 and 33 from coming off from the rotating wheel guide rail 60. FIG. 20 shows a state in which the stopper 61 blocks the rear end of the rotating wheel guide rail 60, and FIG. 19 shows a state in which the stopper 61 releases the rear end of the rotating wheel guide rail 60.

At the time of product shipment, the tare device 30 includes a front panel 31, a rear panel 36, split side panels 32 and 33, an upper panel 47, left and right side plate frames 37, and guide forming members as shown in FIG. The upper frame 39, the guide member cover 42, and the base frame 50 in which 40 is integrated are disassembled and shipped.
The user who purchased the product assembles the tare device 30 in the following order.
(1) The connecting portions 372 of the left and right side plate frames 37 are fixed to the left and right side plate fixing portions 542 of the base frame 50.
(2) The lower side and the left and right side edges of the rear panel 36 are fitted into the groove 541 of the rear frame 54 and the groove 376 of the side plate frame 37.
(3) The upper side edge of the rear panel 36 is fitted into the groove of the upper frame 39, the projection 373 of the upper coupling portion 372 of the side plate frame 37 is fitted into the engagement hole 394 of the upper frame 39, and the upper frame 39 is fitted to the side plate. Temporarily fixed to the upper end of the frame 37.
(4) The protrusions 48 of the upper surface panel 47 are placed on the support portions 403 of the left and right guide forming members 40, and the upper end of the front panel 31 with the lower end edge fitted in the groove of the front frame 51 is connected to the guide forming member. Temporarily fix the tip of 40.
(5) The guide forming member 40 is covered with the guide member cover 42, the upper end of the front panel 31 is sandwiched between the tip of the guide forming member 40 and the tip covering of the guide member cover 42, and the protrusion of the top panel 47 The piece 48 is sandwiched between the support portion 403 of the guide forming member 40 and the restraining portion 423 of the guide member cover 42.
(6) A screw passing through the through hole 422 of the fixing piece 421 of the guide member cover 42 and the through hole 395 of the side plate fixing portion 392 of the upper frame 39 is screwed into the screw hole 374 of the side plate frame 37 to guide the guide member cover 42. The upper frame 39 and the side plate frame 37 are fixed.
(7) The stopper 61 at the rear end of the guide member cover 42 is opened, the rotating wheels 321 and 331 of the overlapped divided side panels 32 and 33 are inserted into the rotating wheel guide rail 60, and the stopper 61 is closed.

When the assembled windshield device 30 is attached to the balance body, first, the positioning is performed so that the front frame 51 of the base frame 50 comes to the front of the rising edge on the front side of the shield plate 70 fixed to the balance body. Then, the windshield device 30 is placed on the balance body while the hanging piece 522 of the side frame 52 is placed along the scale housing.
Next, the windshield device 30 is moved backward while maintaining the contact between the hanging piece 522 of the side frame 52 and the housing of the scale. The windshield device 30 stops moving when the claw 512 of the front frame 51 is fitted in the engagement hole 71 of the shield plate 70.
In this state, the cam lever of the one-touch engagement means 544 is lowered. By this operation, the one-touch engagement means 544 engages with an engagement hole provided at the rising edge on the rear side of the shield plate 70, and the windshield device 30 is fixed on the scale body.
Thus, in this windshield device 30, since the side frame 52 of the base frame 50 has the hanging piece 522, the windshield device 30 can be easily mounted on the scale body.

In this windshield device 30, the rear surface of the windshield space is constituted by a single rear panel 36, and one-touch engagement means (cam lever) 544 is fixed to a rear frame 54 that supports the rear panel 36. Therefore, the outer shape of the windshield device 30 is compact.
In the tare device 30, when the two divided side panels 32 and 33 are fully opened, the divided side panels 32 and 33 overlap and move to the rear end of the rotating wheel guide rail 60. The guide forming member 40 and the guide member cover 42 that form 60, and the side frame 52 that guides the lower ends of the divided side panels 32 and 33 have rear ends extending rearward of the rear panel 36. When fully open, the rear edge of 32 and 33 moves to the rear of the rear panel 36. Therefore, even if the outer shape of the tare device 30 is compact, a wide opening can be secured when the divided side panels 32 and 33 are fully opened.
Further, the one-touch engagement means 544 fixed to the rear frame 54 does not jump out to the rear of the tare device 30 because the rear frame 54 is disposed in front of the rear end of the side frame 52. Therefore, it is not necessary to secure an extra space on the back surface of the tare device 30.

In this tare device 30, the front side edges of the divided side panels 32, 33 that have overlapped when fully opened and moved to the rear end of the rotating wheel guide rail 60 substantially coincide with the front side edges of the side plate frame 37. Since the side plate frame 37 has a shape in which the center portion of the rear side edge is curled, the width in the front-rear direction is narrow at the center and is wide near the joint portions 372 at both ends.
The width of the divided side panels 32 and 33 in the same direction is close to the width in the vicinity of the coupling portion 372 of the side plate frame 37. Therefore, the rear side edges of the divided side panels 32, 33 in the fully opened position are located behind the side edges of the central portion of the side plate frame 37.
When taking out the divided side panels 32 and 33 from the tare device 30, the tare device 30 is detached from the main body of the scale. At this time, if the rear side edge of the center portion of the side plate frame 37 is curled, Since only the side edges of the divided side panels 32 and 33 can be grasped and taken out of the tare device 30, the operation is easy.
Similarly, when the overlapped divided side panels 32 and 33 are inserted into the rotating wheel guide rail 60, the operation is easy.

Further, when the divided side panels 32 and 33 suspended from the rotating wheel guide rail 60 move, the lower ends of the divided side panels 32 and 33 are guided by guide protrusions 521 provided on the side frames 52 of the base frame 50. Move.
The guide protrusion 521 is provided on the upper surface of the flat side frame 52 with a gap in the movement direction.
When a groove is provided to guide the lower ends of the divided side panels 32 and 33, when a fine sample spilled from the weighing pan is cleaned, the sample enters the groove and is difficult to clean. Since 521 is intermittently provided on the flat surface, such a defect can be eliminated.

Further, when the inner surfaces of the divided upper surface panels 43 and 44 of the upper surface panel 47 become dirty, they can be taken out and cleaned by the following procedure.
First, the divided upper panel 43 having the handle 431 is moved to the position of the notch 451 of the upper panel frame 45, and one end of the divided upper panel 43 fitted in the groove of the upper panel frame 45 is escaped from the groove. .
Next, the divided upper panel 43 is pulled obliquely above the upper panel frame body 45, the other end fitted in the groove of the upper panel frame body 46 is escaped, and the divided upper panel 43 is taken out.
Next, the divided top panel 44 is moved to the position of the notch 451 of the top panel frame 45 and taken out in the same procedure.

  Further, as shown in FIG. 21, the tare device 30 can be disassembled and transported, so that the transportation cost can be reduced and breakage during transportation can be avoided.

In addition, although the division | segmentation side surface panels 32 and 33 and the division | segmentation upper surface panels 43 and 44 are comprised with two panels here, three or more may be sufficient.
Here, the rear panel 36 is a transparent panel, but it may not be transparent.

  The windshield device of the present invention can be easily attached to and detached from the balance main body and cleaned, can be installed in a narrow space, and can be widely used in various fields using a precise scale.

30 Windshield Device 31 Front Panel 32 Divided Side Panel 33 Divided Side Panel 36 Rear Panel 37 Side Plate Frame 39 Upper Frame 40 Guide Forming Member 42 Guide Member Cover 43 Divided Upper Panel 44 Divided Upper Panel 45 Upper Panel Panel 46 Upper Panel Frame 47 Top panel 48 Projection piece 50 Base frame 51 Front frame 52 Side frame 54 Rear frame 60 Rotating wheel guide rail 61 Stopper 65 Screw 70 Shield plate 71 Engagement hole 321 Rotating wheel 322 Holding member 323 Engaging portion 324 Handle 325 Engagement Piece 331 Rotating wheel 332 Holding member 333 Engaging portion 371 Recessed portion 372 Connecting portion 373 Protrusion 374 Screw hole 376 Inserting groove 392 Side plate fixing portion 394 Engaging hole 395 Through hole 402 Rail portion 403 Supporting portion 421 of rotating wheel Fixing piece 422 Through hole 423 Suppression part 424 Restriction member 425 Rail part of rotating wheel 431 Handle 451 Notch part 511 Insertion groove 512 Claw 521 Guide projection 522 Drooping piece 541 Insertion groove 542 Side plate fixing part 544 One-touch engagement means (cam lever)
545 Through hole 546 Engagement hole

Claims (10)

A windshield device that can be attached to and detached from the scale body with one touch.
A member that forms a windshield space that prevents ventilation around the weighing pan;
A base frame mounted on the scale body and supporting a member forming the windshield space;
With
The member forming the windshield space is
A transparent front panel on the front side;
Transparent left and right side panels,
A rear panel on the rear side;
A right side plate frame in which an insertion groove for inserting a right side edge of the rear panel is formed;
A left side plate frame in which an insertion groove for inserting a left side edge of the rear panel is formed;
Have
The side panel is composed of at least two split side panels provided on the upper end side with a rotating wheel guided by a rotating wheel guide rail,
The base frame is
A front frame formed with an insertion groove for inserting a lower side edge of the front panel;
Left and right side frames provided with guide protrusions intermittently arranged along the moving direction to guide the lower end of the divided side panel that moves with the rotation of the rotating wheel;
An insertion groove for inserting a lower side edge of the rear panel is formed, and a one-touch engagement means that can be attached to and detached from the engagement portion of the scale body with one touch is fixed, and lower ends of the right side plate frame and the left side plate frame A rear frame to which
Have
The front frame, the side frame, and the rear frame so that the front frame is positioned at a front end of the left and right side frames and the rear frame is positioned forward of a rear end of the left and right side frames. And are integrated,
A windshield device characterized by that.   2. The windshield device according to claim 1, wherein the front frame includes engagement means with an engagement portion formed at a rising edge on a front side of a shield plate fixed to the scale body, The frame has a hanging piece that engages with the outer periphery of the housing of the scale main body, and the one-touch engagement means fixed to the rear frame is an engagement portion formed on a rising edge on the rear side of the shield plate. A windshield device characterized by engaging with the windshield device.   2. The windshield device according to claim 1, wherein the divided side panel is movable in a state of being overlapped with each other to a fully opened position in which a rear edge is located behind the rear panel. Windshield device.   4. The windshield device according to claim 3, wherein the divided side panel is restricted by a stopper from moving further backward from the fully opened position, and when the stopper is released, the divided side panel is moved rearward. A windshield device characterized in that it can be moved and removed.   5. The windshield device according to claim 4, wherein the right side plate frame and the left side plate frame have a recessed portion at an edge on a rear end side, and grip a portion of the divided side surface panel that faces the recessed portion, so as to form the divided side surface. A windshield device characterized in that the panel can be removed.   The windshield device according to any one of claims 1 to 5, further comprising a transparent upper panel forming the windshield space, wherein the upper panel includes a plurality of divided upper panels arranged in parallel and the divided upper panel. A windshield device comprising: a top panel frame into which both ends of each of the top panel frame are inserted, wherein at least one of the divided top panels is movable within the top panel frame.   7. The windshield device according to claim 6, wherein the upper surface panel frame body has a frame cutout portion on the upper side through which the divided upper surface panel can be put in and out. The windshield device according to claim 6 or 7, further comprising: an upper frame coupled to an upper end of the right side plate frame and the left side plate frame at an upper position of the rear frame; and an upper position of the left and right side frames. Left and right guide forming members integrated at both ends of the upper frame so as to be parallel to the side frame, and the rotating wheel guide rails combined with the guide forming members so as to cover the guide forming members. A guide member cover that forms a support portion of the upper panel frame, and
The upper side edge of the rear panel is inserted into an insertion groove formed in the upper frame,
An upper end of the front panel is sandwiched between a front end of the guide forming member and the guide member cover covering the front end.
A windshield device characterized by that.   The windshield device according to claim 8, wherein a stopper that restricts the rearward movement of the divided side panel from the fully open position or releases the restriction is provided at a rear end of the guide member cover. A windshield device characterized by that.   9. The windshield device according to claim 8, wherein the front panel, the rear panel, the divided side panel, the top panel, the right side plate frame, the left side plate frame, and the guide at the time of shipment. A windshield device, wherein the windshield device is disassembled and shipped into an upper frame integrated with a forming member, the guide member cover, and the base frame.