Housing and measurement device

Abstract

A housing comprises: a box body (7) having a rectangular bottom plate (71) and box side wall parts (72), the box body (7) having an opening (73) formed in the top surface thereof; and a lid body having lid side wall parts and a rectangular top plate that covers the opening (73). The box body (7) is provided with a flange (74) that extends from the top-plate-side edge of a first box side wall part (721) toward the side of a second box side wall part (722) facing the first box side wall part (721), the flange (74) overlapping the top plate. A first lid side wall part is provided on the outer side of the second box side wall part (722). A second lid side wall part and a third lid side wall part are respectively provided on the outer sides of a third box side wall part (723) and a fourth box side wall part (724) that are adjacent to the first box side wall part (721) and the second box side wall part (722) and face each other, from among the plurality of box side wall parts (72). The top plate and the flange (74) can be fastened by fastening members.

Description

Housing and measuring device

[0001] The present invention relates to a housing and a measuring device.

[0002] A measurement device is known that includes a radiation source that emits radiation and a detector that detects the amount of radiation emitted from the radiation source. The detector is provided with a control board on which a detection circuit and the like for detecting the amount of radiation are mounted.

[0003] The control board is housed in a metal housing to protect it from electromagnetic waves. The housing includes a box body with an opening on the top surface and a lid body that covers the opening formed in the box body. In the housing that houses the control board, it is preferable to make the gap between the box body and the lid body small to reduce electromagnetic waves that enter the interior.

[0004] To address this issue, a gasket may be inserted between the box and the lid to seal the gap, but this increases the number of parts and can cause problems depending on the gasket material.

[0005] In the housing disclosed in Patent Document 1, a protrusion that is crushed by the lid is provided on the edge of the opening of the box. The lid is screwed to a column erected in the center of the opening, and the protrusion is crushed by the lid, thereby reducing the gap between the box and the lid without using a gasket.

[0006] Japanese Patent Application Laid-Open No. 2007-287759

[0007] In some cases, a lid may be opened for maintenance or other purposes to access a control board housed inside the housing. In the housing disclosed in Patent Document 1, a pillar erected in the center of the opening may interfere with work inside the housing. Furthermore, since the shape of the protrusion crushed by the lid is not restored, there is a risk that the gap between the box body and the lid may not be sufficiently reduced when the opening is closed with the lid again after the lid is opened for maintenance or other purposes.

[0008] An object of the present invention is to provide a housing that can prevent the intrusion of electromagnetic waves without using a gasket and can improve maintainability.

[0009] The housing according to the present invention is a housing for accommodating a control board provided in a detector for detecting a dose of radiation emitted from an emission unit having a radiation source, and includes: a box body having a rectangular bottom plate and box side walls rising from each side of the bottom plate, with an opening formed on the top surface surrounded by the box side walls; a lid body having a rectangular top plate covering the opening and lid side walls rising from three of the four sides of the top plate toward the bottom plate; and a first box side wall, which is one of the plurality of box side walls, extending from the top plate side end of the first box side wall to the top plate side end of one of the plurality of box side walls. The top plate and the flange are provided with a flange that extends toward the second box side wall that faces the first box side wall and overlaps with the top plate, the first lid side wall being one of the three lid side walls being provided on the outside of the second box side wall, and the second lid side wall and the third lid side wall, which are among the three lid side walls and adjacent to the first lid side wall, respectively, are provided on the outside of the third box side wall and the fourth box side wall, which are among the multiple box side walls and adjacent to the first box side wall and the second box side wall and face each other, and the top plate and the flange can be fastened together with a fastening member.

[0010] According to the present invention, it is possible to obtain a housing that can secure a space for accommodating a control board while preventing the intrusion of electromagnetic waves without using a gasket.

[0011] 1 is a front view of a measuring device according to embodiment 1. FIG. 2 is a rear view of a measuring device according to embodiment 1. FIG. 3 is a front view of a measuring device with the front panel open. FIG. 4 is a perspective view of a measuring device with the front panel open. FIG. 5 is a perspective view of a housing according to embodiment 1. FIG. 6 is a perspective view of a box body. FIG. 7 is a perspective view of a lid. FIG. 8 is a perspective view of the lid as viewed from below. FIG. 9 is a view showing another example of a fastening member. FIG. 10 is a view showing another example of a fastening member.

[0012] A housing and a measuring device according to an embodiment of the present invention will be described in detail below with reference to the drawings. Note that the present invention is not limited to the embodiment described below.

[0013] [Embodiment 1] FIG. 1 is a front view of a measuring device according to embodiment 1. FIG. 2 is a rear view of the measuring device according to embodiment 1. The measuring device 1 includes a box-shaped outer shell 11. The outer shell 11 includes a front panel 12 and a rear panel 13. In FIGS. 1 and 2, the measuring device 1 is assumed to be installed on a horizontal surface. The horizontal direction used in the following description is a direction based on the state in which the measuring device 1 is installed on a horizontal surface. The up-down direction used in the following description is a direction parallel to the vertical direction based on the state in which the measuring device 1 is installed on a horizontal surface. The installation posture and direction of the measuring device 1 shown here are determined for convenience in explaining embodiment 1 and do not limit the actual installation posture of the measuring device 1.

[0014] Horizontally extending openings 12a and 13a are formed in opposing positions on the front panel 12 and the rear panel 13. The measuring device 1 is a device for measuring the thickness of an object passed through the openings 12a and 13a. Examples of objects whose thicknesses are measured by the measuring device 1 include film or sheet-like materials such as electrode sheets and separator sheets for secondary batteries, paper, plastic packaging sheets, building material sheets, functional material sheets, optical films, and metal foils.

[0015] The front panel 12 is provided so as to be able to open and close relative to the outer casing 11. For example, the front panel 12 is formed by dividing it into upper and lower halves with the opening 12a at the center. Fig. 3 is a front view of the measuring device with the front panel open. Fig. 4 is a perspective view of the measuring device with the front panel open.

[0016] 3 and 4, the upper front panel 12 is connected to the outer casing 11 by a hinge 14 and can be opened and closed. The lower front panel 12 is detachable from the outer casing 11, and in FIG. 3, the lower front panel 12 has been removed.

[0017] An electrical equipment section 15 is provided on the outside of the outer casing 11. The electrical equipment section 15 includes a power supply, a control device, and a box that houses them. Measurement of the object to be measured using the emitting section 2 and detecting section 3, which will be described later, is controlled by the electrical equipment section 15.

[0018] Leg fittings 16 are provided below the outer casing 11 to abut against the installation surface on which the measuring device 1 is installed. The amount of downward protrusion of the leg fittings 16 from the outer casing 11 is adjustable. By adjusting the amount of protrusion of the leg fittings 16, the height of the measuring device 1 can be adjusted. The amount of protrusion of the leg fittings 16 can be adjusted by, for example, rotating the leg fittings 16.

[0019] An emitter 2 and a detector 3 are provided inside the outer casing 11. The emitter 2 has a radiation source inside and emits radiation toward the detector 3. In the measurement device according to the first embodiment, the direction of radiation emitted from the emitter 2 is upward. The emitter 2 is supported by a lower rail 4 attached to the rear panel 13. The lower rail 4 is a rail member that extends horizontally and is attached below the opening 13a. By being supported by the lower rail 4, the emitter 2 is able to move horizontally below the opening 13a.

[0020] The detection unit 3 is provided above the radiation unit 2. A gap allowing the object to be measured to pass through is provided between the detection unit 3 and the radiation unit 2. The detection unit 3 detects the dose of radiation emitted from the radiation unit 2.

[0021] The detection unit 3 is supported by an upper rail 5 attached to the rear panel 13. The upper rail 5 is a rail member that extends horizontally and is attached above the opening 13a. Supported by the upper rail 5, the detection unit 3 is movable horizontally above the opening 13a.

[0022] In the measuring device 1, the object to be measured, which is taken into the interior of the outer body 11 through the openings 12a and 13a, passes between the radiator 2 and the detector 3. While the object to be measured passes, the radiator 2 and the detector 3 move (scan) horizontally while facing each other. The amount of attenuation of the radiation radiated from the radiator 2 as it passes through the object to be measured is calculated based on the detection result in the detector 3. The measuring device 1 calculates the thickness of the object to be measured based on the calculated amount of radiation attenuation.

[0023] A housing 6 is provided on top of the detection unit 3. The housing 6 houses a control board (not shown) on which a detection circuit for detecting radiation dose and the like are mounted. Fig. 5 is a perspective view of the housing according to the first embodiment. The housing 6 includes a box body 7 and a lid body 8. The box body 7 and the lid body 8 are formed of, for example, metal.

[0024] Fig. 6 is a perspective view of the box body. The box body 7 has a bottom plate 71 and box side walls 72. The bottom plate 71 is a rectangular plate-like member. The box side walls 72 are plate-like members that rise from each side of the bottom plate 71. In other words, the box body 7 is provided with four box side walls 72. An opening 73 surrounded by the four box side walls 72 is formed on the top surface of the box body 7. As shown in Fig. 5, the opening 73 is covered by a top plate 81 of the lid body 8, which will be described later. The space surrounded by the bottom plate 71 and the box side walls 72 is an accommodation space in which a control board is accommodated.

[0025] One of the four box side wall portions 72 is referred to as a first box side wall portion 721. The box side wall portion 72 facing the first box side wall portion 721 is referred to as a second box side wall portion 722. The box side wall portions 72 adjacent to and facing the first box side wall portion 721 and the second box side wall portion 722 are referred to as a third box side wall portion 723 and a fourth box side wall portion 724, respectively.

[0026] 3 and 4, the housing 6 is provided so that the second box side wall portion 722 faces the front panel 12 in the closed state. (See FIG. 1 for the front panel 12 in the closed state.) This can also be said as the housing 6 is provided so that the first box side wall portion 721 faces the rear panel 13.

[0027] The box 7 is provided with a flange 74 extending from the top plate side end of the first box side wall 721 toward the second box side wall 722. The flange 74 overlaps with the top plate 81 covering the opening 73.

[0028] Two screw holes 74a are formed in the flange 74. The two screw holes 74a are formed spaced apart from each other in a direction (hereinafter simply referred to as the left-right direction) parallel to the side of the bottom plate 71 on which the first box side wall portion 721 is formed. For example, the screw holes 74a are formed in the left and right ends of the flange 74.

[0029] Two screw holes 722a are formed in the second box side wall portion 722. The two screw holes 722a are formed spaced apart from each other in the left-right direction. For example, the screw holes 722a are formed in the left and right ends of the second box side wall portion 722.

[0030] Fig. 7 is a perspective view of the lid. Fig. 8 is a perspective view of the lid seen from below. The lid body 8 has a top plate 81 and a lid side wall portion 82. The top plate 81 is a rectangular plate-like member. The top plate 81 covers the opening 73 of the box body 7 (see also Fig. 6 ). The top plate 81 has through holes 81a formed in positions that overlap with the screw holes 74a formed in the flange 74 of the box body 7. The positions and number of the through holes 81a can be changed as appropriate to match the positions and number of the screw holes 74a formed in the flange 74.

[0031] The lid sidewalls 82 are plate-like members that rise from three of the four sides of the top plate 81 toward the bottom plate 71. A first lid sidewall 821, which is one of the three lid sidewalls 82, is provided on the outside of the second box sidewall 722. The first lid sidewall 821 has through-holes 821a formed in positions that overlap with the screw holes 722a formed in the second box sidewall 722 of the box body 7. The positions and number of the through-holes 821a can be changed as appropriate to match the positions and number of the screw holes 722a formed in the second box sidewall 722.

[0032] Of the three lid side walls 82, the second lid side wall 822 and the third lid side wall 823 adjacent to the first lid side wall 821 face each other. The second lid side wall 822 is provided on the outside of the third box side wall 723 of the box body 7, and the third lid side wall 823 is provided on the outside of the fourth box side wall 724 of the box body 7.

[0033] The lid 8 is fixed to the box 7 using screws 91, which are fastening members. Specifically, a screw hole 74a formed in the flange 74 of the box 7 is aligned with a through hole 81a formed in the top plate 81 of the lid 8, and the screw 91 is screwed into the screw hole 74a. This fastens the flange 74 and the top plate 81 together with the screw 91. Furthermore, a screw hole 722a formed in the second box side wall 722 of the box 7 is aligned with a through hole 821a formed in the first lid side wall 821 of the lid 8, and the screw 91 is screwed into the screw hole 722a. This fastens the second box side wall 722 and the first lid side wall 821 together with the screw 91. In this way, the lid 8 can be fixed to the box 7 with the screw 91.

[0034] In the housing 6 according to the first embodiment, the lid 8 can be attached to and detached from the box 7 if the screws 91 can be tightened and loosened from both the second box side wall 722 side and the top plate 81 side. That is, the lid 8 can be attached and detached if the housing 6 can be accessed from the side where the second box side wall 722 is provided. Because the housing 6 is provided near the radiation emitter 2, it is preferable that the work of attaching and detaching the lid 8 be completed in as short a time as possible from the viewpoint of worker safety. In the housing 6 according to the first embodiment, the lid 8 can be attached and detached by accessing it only from the side where the second box side wall 722 is provided, as described above, and therefore the work time can be shortened.

[0035] On the other hand, when fastening using screws 91 is performed on the side of the first box side wall 721 facing the second box side wall 722, access to the housing 6 from the second box side wall 722 side is also required, making it difficult to shorten the work time.

[0036] Furthermore, in the measuring device 1, the lower rail 4 that supports the radiating unit 2 and the upper rail 5 that supports the detecting unit 3 are attached to the rear panel 13 (see also FIG. 4 ), so it is necessary to design the rear panel 13 to have a structure that minimizes rattles and the like. Therefore, it is difficult to design the rear panel 13 to be easily openable and closable like the front panel 12. Therefore, when the detecting unit 3 is incorporated inside the outer casing 11, it is difficult to access the housing 6 from the rear panel 13 side.

[0037] In the measuring device 1 according to the first embodiment, the housing 6 is arranged so that the second box side wall portion 722, which needs to be accessed when attaching or detaching the lid body 8, faces the front panel 12. Therefore, by opening the front panel 12, the lid body 8 can be attached or detached easily and quickly.

[0038] In order to prevent electromagnetic waves from entering the inside of the housing 6, it is desirable to have a labyrinth structure in which the box body 7 and the lid body 8 overlap on all four sides of the opening 73 formed in the top surface of the box body 7. Here, lid side walls 82 are provided on the outsides of the second box side wall 722, the third box side wall 723, and the fourth box side wall 724, and the overlap between the box side wall 72 and the lid side wall 82 prevents electromagnetic waves from entering.

[0039] On the other hand, the lid side wall 82 is not provided on the outside of the first box side wall 721, and a labyrinth structure in which the lid side wall 82 overlaps the outside of the first box side wall 721 is not formed. However, because the flange 74 that overlaps with the top plate 81 is formed on the box body 7, the labyrinth structure in which the top plate 81 and the flange 74 overlap prevents electromagnetic waves from entering.

[0040] In this way, a labyrinth structure is formed in which the box body 7 and the lid body 8 overlap on all four sides of the opening 73 formed on the top surface of the box body 7, preventing the penetration of electromagnetic waves, so there is no need to provide a gasket between the box body 7 and the lid body 8, and the number of parts can be reduced.

[0041] Furthermore, since the labyrinth structure is maintained even if the lid 8 is repeatedly attached and detached, the function of preventing the intrusion of electromagnetic waves does not deteriorate even if the lid 8 is repeatedly attached and detached.

[0042] After removing the lid 8, an operator may access the control board housed inside the housing 6 to perform work. Work on the control board is performed by inserting a tool or fingers into the interior through an opening 73 formed in the top surface of the box body 7. Therefore, the larger the area of ​​the opening 73, the easier the work becomes and the more efficient the work. Here, although a portion of the opening 73 is blocked by the flange 74, the flange 74 is provided on the first box side wall 721 side, opposite the second box side wall 722 that the operator accesses, and therefore, a decrease in work efficiency due to the provision of the flange 74 is suppressed.

[0043] Furthermore, because the lid side wall 82 is not provided on the outside of the first box side wall 721, the lid body 8 can be slid in the direction toward the front panel 12 (hereinafter referred to as the front) and the direction toward the rear panel 13 (hereinafter referred to as the rear). Furthermore, because the second lid side wall 822 and the third lid side wall 823 formed on the lid body 8 sandwich the box body 7, the second lid side wall 822 and the third lid side wall 823 function as guides when sliding the lid body 8 forward and backward. Therefore, the lid body 8 can be attached and detached by the simple task of sliding the lid body 8 in the forward and backward directions.

[0044] In this way, the number of parts is reduced, the lid 8 is easier to attach and remove, and the inside of the box 7 is easier to access, thereby improving the maintainability of the housing 6.

[0045] The number and positions of the screw holes 74a formed in the flange 74 are not limited to those illustrated. The number and positions of the screw holes 722a formed in the second box side wall portion 722 are not limited to those illustrated. For example, only one screw hole 74a or one screw hole 722a may be formed. When only one screw hole 74a or one screw hole 722a is formed, it is desirable that the screw hole be formed in the center in the left-right direction. The number and positions of the through holes 81a and through holes 821a are adjusted to match the number and positions of the screw holes 74a and the screw holes 722a.

[0046] Furthermore, the fastening member is not limited to the screw 91. Figures 9 and 10 are diagrams showing other examples of the fastening member. The fastening member may be a snap lock 92 as shown in Figure 9. Note that the snap lock 92 has a different fastening direction than the screw 91 and therefore cannot be used to fasten the top plate 81 and the flange 74. The fastening member may also be a nylon latch 93 as shown in Figure 10. The snap lock 92 and nylon latch 93 allow members to be fastened and unfastened with a simple operation, further reducing the time required to attach and remove the lid 8.

[0047] <Others> Some examples of combinations of the disclosed technical features are described below. <Additional Notes>

[0048] (1) A housing for accommodating a control board in a detector for detecting a dose of radiation emitted from an emission unit having a radiation source, the housing comprising: a box body having a rectangular bottom plate and box side walls rising from each side of the bottom plate, with an opening formed on a top surface surrounded by the box side walls; and a lid body having a rectangular top plate covering the opening and lid side walls rising from three of four sides of the top plate toward the bottom plate, wherein the box body is provided with a flange extending from an end of a first box side wall, which is one of the plurality of box side walls, on the top plate side toward a second box side wall, which is one of the plurality of box side walls and faces the first box side wall, and overlapping the top plate; and a first lid side wall, which is one of the three lid side walls, is provided on the outside of the second box side wall, A housing in which, of the three lid side wall portions, a second lid side wall portion adjacent to the first lid side wall portion and a third lid side wall portion adjacent to the first lid side wall portion are each provided outside a third box side wall portion and a fourth box side wall portion that are adjacent to the first box side wall portion and the second box side wall portion and that face each other, among the plurality of box side wall portions, and the top plate and the flange can be fastened together by a fastening member.

[0049] (2) The housing according to (1), wherein the second box side wall portion and the first lid side wall portion can be fastened together by a fastening member.

[0050] (3) The housing according to (2), wherein the fastening member is a screw, the flange and the second box side wall portion have threaded holes formed therein, and the top plate and the first lid side wall portion have through holes formed therein that overlap with the threaded holes.

[0051] (4) The housing described in (3) above, wherein the screw holes are formed in pairs on each of the flange and the second box side wall portion, spaced apart from each other in a direction parallel to the side on which the first box side wall portion is formed, and the through holes are formed in pairs on each of the top plate and the first lid side wall portion, spaced apart from each other in a direction parallel to the side on which the first box side wall portion is formed.

[0052] (5) The housing described in (3) above, wherein one screw hole is formed in the center of each of the flange and the second box side wall portion in a direction parallel to the side on which the first box side wall portion is formed, and one through hole is formed in the center of each of the top plate and the first lid side wall portion in a direction parallel to the side on which the first box side wall portion is formed.

[0053] (6) A measuring device comprising an outer casing having a front panel and a rear panel facing each other, a radiation unit housed in the outer casing and having a radiation source to emit radiation, a detector for detecting the amount of radiation emitted from the radiation unit, and a housing according to any one of (1) to (5) attached to the detector, wherein openings extending horizontally are formed in positions facing each other in the front panel and the rear panel, the radiation unit and the detector are attached to the rear panel so as to be movable horizontally, the housing is arranged so that the second box side wall portion faces the front panel, and the front panel is openable and closable.

[0054] REFERENCE SIGNS LIST 1 Measuring device 11 Outer shell 12 Front panel 12a Opening 13 Rear panel 13a Opening 14 Hinge 15 Electrical component section 16 Leg fitting 2 Radiation section 3 Detection section 4 Lower rail 5 Upper rail 6 Housing 7 Box body 71 Bottom plate 72 Box side wall section 721 First box side wall section 722 Second box side wall section 722a Screw hole 723 Third box side wall section 724 Fourth box side wall section 73 Opening 74 Flange 74a Screw hole 8 Lid body 81 Top plate 81a Through hole 82 Lid side wall section 821 First lid side wall section 821a Through hole 822 Second lid side wall section 823 Third lid side wall section 91 Screw 92 Snap Lock 93 Nylon Latch

Claims

1. A housing for accommodating a control board in a detector that detects a dose of radiation emitted from a radiation unit having a radiation source, comprising: a box body having a rectangular bottom plate and box side walls rising from each side of the bottom plate, with an opening formed on the top surface and surrounded by the box side walls; and a lid body having a rectangular top plate covering the opening and lid side walls rising from three of the four sides of the top plate toward the bottom plate, wherein the box body is provided with a flange that extends from the top plate side end of a first box side wall, which is one of the plurality of box side walls, toward a second box side wall, which is one of the plurality of box side walls and faces the first box side wall, and overlaps with the top plate; and a first lid side wall, which is one of the three lid side walls, is provided on the outside of the second box side wall, A housing in which, of the three lid side wall portions, a second lid side wall portion adjacent to the first lid side wall portion and a third lid side wall portion adjacent to the first lid side wall portion are each provided outside a third box side wall portion and a fourth box side wall portion that are adjacent to the first box side wall portion and the second box side wall portion and that face each other, among the plurality of box side wall portions, and the top plate and the flange can be fastened together by a fastening member.

2. The housing according to claim 1, wherein the second box side wall and the first lid side wall can be fastened together by a fastening member.

3. The housing according to claim 2, wherein the fastening members are screws, and threaded holes are formed in the flange and the second box side wall portion, and through holes that overlap the threaded holes are formed in the top plate and the first lid side wall portion.

4. The housing according to claim 3, wherein the screw holes are formed in pairs on each of the flange and the second box side wall portion, spaced apart from each other in a direction parallel to the side on which the first box side wall portion is formed, and the through holes are formed in pairs on each of the top plate and the first lid side wall portion, spaced apart from each other in a direction parallel to the side on which the first box side wall portion is formed.

5. The housing of claim 3, wherein the screw hole is formed in the center of each of the flange and the second box side wall portion in a direction parallel to the side on which the first box side wall portion is formed, and the through hole is formed in the center of each of the top plate and the first lid side wall portion in a direction parallel to the side on which the first box side wall portion is formed.

6. A measuring device comprising an outer casing having a front panel and a rear panel facing each other, a radiation unit housed in the outer casing and having a radiation source to radiate radiation, a detector for detecting the amount of radiation radiated from the radiation unit, and a housing according to any one of claims 1 to 5 attached to the detector, wherein openings extending horizontally are formed in the front panel and the rear panel at positions facing each other, the radiation unit and the detector are attached to the rear panel so as to be movable horizontally, the housing is arranged so that the second box side wall portion faces the front panel, and the front panel is openable and closable.

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