JP2013113590A - Instrument apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an instrument apparatus capable of simply performing assembly and detachment work as compared with a conventional apparatus.SOLUTION: The instrument apparatus includes a middle case 40, an upper case 50 arranged on the front side of the middle case 40 and configured so that the front of the middle case can be seen through the upper case 50, and a lower case 60 covering the middle case 40 and a circuit board 30. On a center side back part of the middle case 40, a hook part 412 is attached to an elastic arm piece 411 and a rib 413 is projected from the elastic arm piece 411 on the rear side of the hook part 412. On the lower case 60, a placing part 620 including an aperture window part 623 projected from a bottom part of the lower case 60 to the circuit board 30 is formed, an engagement receiving part 624 to be engaged with the hook part 412 is formed so as to be continued to the placing part 620, a butting part 625 allowed to be abutted on the rib 413 is integrally formed from the lower case 60, and slit parts 626 are formed on both sides of the butting part 625.

Description

  The present invention relates to an instrument device mounted on a vehicle such as an automobile, a motorcycle, a construction machine, or an agricultural machine.

  As an instrument device mounted on a conventional vehicle or the like, configurations as shown in Patent Document 1, Patent Document 2, and the like are known. In the instrument device according to the patent document, a display board disposed on the front side of a pointer-type indicator such as a speedometer or a tachometer, a circuit board made of a hard material for mounting the indicator, and this A middle case made of a resin material placed on the front side of the circuit board and mounting the display board, and a see-through panel member and a display board made of a resin material placed on the front side of the middle case and transparent at least on the front side An instrument device is provided that includes an upper case made of a facing panel member that divides the display area, and a lower case made of a resin material that covers the middle case and the circuit board.

  In this case, in order to easily assemble the instrument device, from a fixing means by screw tightening, for example, a locking portion composed of a claw-shaped hook portion provided on the elastic arm piece and an elastic arm piece provided on the locking portion. By constructing the frame-like engagement portion that engages with the hook portion in a detachable manner, operations such as assembly and disassembly can be performed more easily than screw tightening operations using screws that are individually provided parts. What is known to be able to do that is known.

JP 2001-174292 A JP 2008-75696 A JP-A-1-250606 [Refer to FIG. 5] Japanese Utility Model Publication No. 2-25131 [See FIGS. 1 to 3]

  By the way, the instrument apparatus in the above-mentioned patent document 1 or patent document 2 is provided with a hook part for locking on the outer peripheral part of each of the see-through panel member and the facing panel member, the middle case or the lower case, for example, A frame-like engaging portion is formed on the facing panel member, the middle case, or the lower case so as to correspond to the hook portion and the like, and is configured to be engaged and held.

  At this time, after the assembly, the hook portion and the engaging portion are brought into a fitted state by deformation due to dimensional variation or warping of the case between the hook portion for locking and the frame-like engaging portion. When slackening occurs and vibration is applied from the outside, particularly when used in a vibrating atmosphere, there is a problem that rattling occurs between the cases and a squeak noise or the like occurs.

  In order to avoid this point, as described in, for example, Patent Document 3 and Patent Document 4, ribs are provided on the elastic arm piece portions located on the back side of the elastic arm pieces provided with the hook portions for locking. Protruding and providing ribs to be pressed against the wall surface of the case have been proposed to absorb backlash due to dimensional errors due to gaps between cases and warping of the case.

  However, in the fixing structure having such a configuration, it is possible to eliminate rattling at the time of assembling, but when removing each case, a plurality of hook portions engaged and held by the frame-shaped engaging portion. For example, when disassembling the middle case and the lower case, a rib is provided on the back side of the elastic arm piece provided with a hook portion for locking provided in the middle case. Since the case side receiving the rigidity is also high, it becomes difficult to bend even if a large force is applied to the rib of the hook part when trying to remove the case while bending the hook part, and manual disassembly work is troublesome For this reason, there is a possibility that a dedicated removal jig is required or the hook part may be damaged in some cases.

  Therefore, the present invention aims to provide an instrument device that can perform assembling and detaching workability by paying attention to the above-mentioned problems.

  In order to solve the above-described problems, the present invention provides a display board disposed on the front side of the indicator instrument, a circuit board made of a hard material on which the indicator instrument is mounted, and a front side of the circuit board. An intermediate case made of a resin material on which the display plate is placed; an upper case made of a resin material that is arranged on the front side of the intermediate case and at least the front surface of which can be seen through; the intermediate case and the circuit board; And a lower case made of a resin material that covers the outer case, the peripheral portion of the middle case is provided with a flange portion for mounting on the peripheral portion on the upper end side of the lower case, and A hook portion made of a locking claw portion provided on the elastic arm piece is provided on the back surface portion on the center side of the middle case, and a rib is protruded from the elastic arm piece on the back surface side of the hook portion, and the lower case The hook And a mounting portion that protrudes from the bottom surface portion of the lower case toward the circuit board, and the mounting portion includes a rising wall portion that rises toward the circuit board side, and It is formed from a rising wall portion and a mounting surface portion that supports the back side of the circuit board, and an opening window portion is provided in the mounting surface portion, and an edge portion of the opening window portion is continuous with the mounting surface portion. An engagement receiving portion that engages with the hook portion is provided, and an abutting portion that can be brought into contact with the rib integrally from the lower case is provided on the opening window side facing the engagement receiving portion. In addition, a slit portion is provided on both sides of the abutting portion so that the abutting portion is easily bent.

  With this configuration, by providing slits on both sides of the abutting part, the rigidity of the abutting part itself can be weakened, so it is provided on the elastic arm piece when removing the middle case and the lower case. Since the abutting part is easily bent by pressing the hook part made of the locking claw part against the abutting part side so as to release the engagement with the engagement receiving part provided on the case side, the disassembling work is performed. It can be done well.

  Moreover, in Claim 2, in the instrument device according to Claim 1, the engagement receiving portion is an inclined portion that is gradually inclined toward the abutting portion as it goes from the placement portion toward the bottom surface of the lower case. It is formed by these.

  By configuring in this way, when the middle case and the lower case are assembled, the hook portion provided in the middle case along the inclined portion of the engagement receiving portion provided at the edge of the opening window portion of the lower case is provided. Since it can be assembled while being guided, the assembling work can be performed well.

  According to a third aspect of the present invention, in the instrument device according to the first or second aspect, a cut portion is provided on both sides of the engagement receiving portion.

  By configuring in this way, the cut portions are provided on both sides of the engagement receiving portion, so that the rigidity of the cut portion itself can be weakened. When the middle case and the lower case are assembled, the opening window portion of the lower case When the hook portion provided in the middle case is fed along the engagement receiving portion provided at the edge of the hook, the engagement receiving portion bends and can be fed without damaging the hook portion, and the assembly work is also performed well. be able to.

  According to a fourth aspect of the present invention, in the instrument device according to any one of the first to third aspects, the circuit board is sandwiched and held between the lower case and the middle case. Is.

  With this configuration, when the middle case and the lower case are assembled and fixed, the circuit board and the middle case are set on the basis of the lower case, and the engagement receiving portion of the lower case is set at the hook portion of the middle case. By engaging and holding, the circuit board can be satisfactorily assembled and held while sandwiching the circuit board in each case.

  In the instrument device according to the present invention, a display board disposed on the front side of the indicator instrument, a circuit board made of a hard material for mounting the indicator instrument, and disposed on the front side of the circuit board, the display board is mounted. A middle case made of a resin material to be placed, an upper case made of a resin material that is disposed on the front side of the middle case and is transparent at least on the front surface, and a lower case made of a resin material that covers the middle case and the circuit board And a flange portion for mounting on the peripheral edge portion on the upper end side of the lower case, and a back surface portion on the center side of the intermediate case. A hook portion comprising a locking claw portion provided on the elastic arm piece is provided, and a rib is projected from the elastic arm piece on the back side of the hook portion, and the lower case corresponds to the hook portion. In the position to There is provided a mounting portion that protrudes from the bottom surface portion of the lower case toward the circuit board. The mounting portion is a rising wall portion that is formed to rise toward the circuit board side, and is continuous with the rising wall portion. And a mounting surface portion that supports the rear side of the circuit board, and the opening surface portion is provided in the mounting surface portion, and the hook portion is continuous with the mounting surface portion on the edge portion of the opening window portion. An engaging receiving portion that engages is provided, and an abutting portion that can be brought into contact with the rib integrally from the lower case is provided on the side of the opening window facing the engaging receiving portion. Because the instrument is characterized by providing slits on both sides of the abutment to make the abutment part flexible, the rigidity of the abutment part itself can be obtained by providing slits on both sides of the abutment part. Can weaken When removing the middle case and the lower case, push the hook part consisting of the locking claw part provided on the elastic arm piece to the abutment part side so as to release the engagement with the engagement receiving part provided on the case side. By pressing, the abutting portion is easily bent, so that the disassembling work can be performed satisfactorily, thereby achieving the intended purpose.

FIG. 1 is a front view showing an instrument device according to a first embodiment of the present invention. FIG. 2 is a rear view showing the appearance of the instrument device of FIG. FIG. 3 is a cross-sectional view of the instrument device showing the line AA in FIG. 4 is a cross-sectional view of the instrument device showing a state before assembly in FIG. FIG. 5 is a cross-sectional view of the instrument device showing the BB line portion of FIGS. 1 and 2. FIG. 6 is an exploded perspective view showing a locking portion of the middle case of FIG. 5 and a main portion of the lower case engaged with the locking portion. FIG. 7 is a cross-sectional view of the main part of the instrument device showing the way of removing the locking portion of the middle case and the lower case of FIG. FIG. 8 is an exploded perspective view showing the locking portion of the middle case according to the second embodiment of the present invention and the main portion of the lower case engaged with the locking portion.

  FIG. 1 to FIG. 7 show a first embodiment of the present invention, and based on these, an embodiment of the present invention will be described below by taking, for example, an instrument device mounted on an automobile as an example.

  In the figure, in the meter device according to the present embodiment, a display board 20 arranged on the front side of a pointer-type indicator 10 such as a speedometer, a fuel meter, a water temperature gauge, and the instrument body 11 of the indicator 10 are provided. A circuit board 30 made of a hard material to be mounted, a middle case 40 made of a resin material placed on the front side of the circuit board 30 and mounting the display board 20, and a front side of the middle case 40; At least the front case 50 made of a see-through panel member 51 made of a resin material that can be seen through and the facing panel member 52 that partitions the display area of the display panel 20, and the resin material that covers the middle case 40 and the circuit board 30. And a lower case 60.

  In this case, in each indicating instrument 10 that displays various information such as a speedometer, a fuel gauge, and a water temperature gauge, an instrument main body 11 constituting a part of each indicating instrument 10 is assembled on the back side of the circuit board 30. A pointer 13 that rotates about the pointer shaft 12 as an axis is press-fitted and fixed to the distal end side of the pointer shaft 12 provided in each instrument body 11. As the pointer structure in this embodiment, a light emitting pointer 13 formed of a transparent synthetic resin such as a polycarbonate resin or an acrylic resin is used.

  The instrument body 11 is composed of a movable magnet instrument or a stepping motor. In this example, the instrument body 11 is mounted behind the circuit board 30 so that the pointer shaft 12 penetrates the shaft hole formed in the circuit board 30, and is soldered. These are electrically connected to the wiring pattern by appropriate conduction means.

  Further, the display plate 20 disposed on the front side of the middle case 40 located behind the pointer 13 is provided with a display unit 21 made of scales, numbers, symbols, and the like. The display plate 20 is provided with a through hole 22 at a position corresponding to the pointer shaft 12, and the pointer shaft 12 and the pointer 13 can be connected through the through hole 22.

  Further, the circuit board 30 is made of a hard circuit board in which a wiring pattern (not shown) is applied to a glass epoxy base material, for example, and driving means (not shown) for driving and controlling the instrument body 11, for example, a resistor, Various electronic components (not shown) such as capacitors are conductively connected to the wiring pattern. On the circuit board 30, a light source (light emitting diode 70) for transmitting and illuminating the display unit 21 such as the scales and numerals of the display panel 20 facing the inside case 40 of the frame shape and the pointer 13 are illuminated. The indicator light source (light emitting diode 71) for mounting is mounted, and the instrument body 11 is assembled and fixed to the back side of the circuit board 30 as described above.

  Further, the middle case 40 has a substantially frame-shaped side wall 41 and a middle part of the side wall 41 in order to support the indicator 10 such as a speedometer, a liquid level gauge, and a water temperature gauge by a white synthetic resin material. Is formed by a horizontal wall portion 42 provided so as to connect each of them, and a cylindrical portion 43 is formed so as to surround the indicator shaft 12 of each indicator instrument 10 integrally from the middle case 40 formed in the frame shape. On the surface side of the circuit board 30 located at the bottom of the cylindrical portion 43, the light source 71 for pointer illumination described above is disposed. In this case, the horizontal wall portion 42 is formed as a mounting surface on which the display plate 20 is mounted.

  Further, the middle case 40 is formed with a reflection wall portion 44 integrally protruding continuously from the middle of the outer peripheral surface of the cylindrical portion 43, and a scale, a number, etc., as described above, are located immediately below the reflection wall portion 44. A light source 70 for illumination for transmitting and illuminating the display unit 21 is arranged. Further, in the middle case 40, the light from the light source 70 is reflected and guided through the reflection wall portion 44, and the reflected surface portion 45 that reflects and guides the reflected and guided light further toward the display portion 21 side of the display plate 20. Is formed continuously from the horizontal wall portion 42 of the middle case 40.

  The see-through panel member 51 constituting a part of the upper case 50 is made of, for example, a transparent synthetic resin, and is provided so that the display unit 21 on the display board 20 can be seen through.

  Further, the facing panel member 52 constituting a part of the upper case 50 is made of, for example, black synthetic resin so as to cover the peripheral portion of the display plate 20 so that the display portion 21 region on the display plate 20 can be visually recognized. Is provided.

  The lower case 60 is made of, for example, synthetic resin, and is formed in a bottomed frame shape so as to cover the back of the circuit board 30 and the outer peripheral surface side of the middle case 40.

  By the way, the following structures are used for each component of the upper case 50, the middle case 40, and the lower case 60 as a structure as an assembly / removal structure of each component of the instrument device in the present embodiment.

  A plurality of locking portions 510 are integrally provided at appropriate positions on the outer peripheral portion of the fluoroscopic panel member 51 at a predetermined interval. In this case, as the locking portion 510, an elastic arm piece 511 that integrally protrudes from the outer peripheral portion of the fluoroscopic panel member 51 toward the lower case 60 side, and a claw-like shape provided at the distal end portion of the elastic arm piece 511. It is formed by a hook portion 512 and a rib 513 provided so as to project from a portion on the back side of the elastic arm piece 511 provided with the hook portion 512.

  Further, on the facing panel member 52 side, a frame-like engaging portion 520 is integrally provided at a position facing the engaging portion 510 to receive some of the engaging portions 510 provided on the fluoroscopic panel member 51, and As in the case of the see-through panel member 51, a locking portion 524 including an elastic arm piece 521, a hook portion 522, and a rib 523 is integrally provided at a proper position on the outer peripheral portion of the facing panel member 52 with a predetermined interval. Yes.

  Further, the lower case 60 includes an engaging portion 510 formed of an elastic arm piece 511, a hook portion 512, and a rib 513 provided on the transparent panel member 51, and an elastic arm piece 521 provided on the facing panel member 52 and the hook portion. Engaging portions 600 each having a frame shape are provided at the outer peripheral portion of the lower case 60 so that the locking portions 524 formed of 522 and the ribs 523 are respectively engaged and held.

  Further, the middle case 40 is provided with a flange portion 400 that protrudes in the horizontal direction toward the outer side at the upper peripheral edge of the middle case 40, and the flange portion 400 is provided so as to be placed on the peripheral portion of the lower case 60. At the same time, the flange portion 400 is sandwiched and held between the upper case 50 and the lower case 60.

  The circuit board 30 disposed between the middle case 40 and the lower case 60 is provided so as to be sandwiched and held between the middle case 40 and the lower case 60. At this time, the lower case 60 is provided with a substrate receiving portion 610 that protrudes from the bottom surface portion of the lower case 60 toward the circuit substrate 30. A mounting space for the electronic components mounted on the circuit board 30 and the instrument body 11 is secured by the thickness of the board receiving portion 610.

  In the present embodiment, the elastic arm piece 411 is integrated with the middle case 40 at appropriate locations (two locations) in the central region of the middle case 40 toward the lower case 60 side (the back side of the middle case 40), The elastic arm piece 411 has a hook portion 412 formed of a locking claw portion provided on the distal end side, and an elastic arm piece 411 facing away from the side on which the hook portion 412 is provided. A locking portion 410 including a rib 413 formed so as to project is provided.

  On the lower case 60 side, a mounting portion 620 that is recessed in a frame shape from the bottom surface portion of the middle case 40 is provided at a position corresponding to the locking portion 410 of the middle case 40. The height dimension and the height dimension of the substrate receiving portion 610 are set to be the same height dimension.

  At this time, as the mounting portion 620, a rising wall portion 621 that is formed to rise toward the circuit board 30 side, and a mounting surface portion 622 that supports the rear side of the circuit board 30 continuously with the rising wall portion 621. A recessed space portion S is formed from the mounting surface portion 622, and an opening window portion 623 is provided in the mounting surface portion 622, and a through hole 31 is provided in the circuit board 30 corresponding to the position of the opening window portion 623.

  In addition, an engagement receiving portion 624 that is engaged with a hook portion 412 that is a locking claw portion provided on the elastic arm piece 411 is provided continuously with the mounting surface portion 622 that is an edge portion of the opening window portion 623, and this An abutting portion 625 that can be brought into contact with the rib 413 integrally from the lower case 60 is provided on the mounting surface portion 622 side that is an edge portion on the opening window 623 side facing the engagement receiving portion 624, and this abutting portion. Slit portions 626 are provided on both sides of 625 to make the abutting portion 625 easy to bend.

  In the present embodiment, the engagement receiving portion 624 is inclined in a direction of gradually approaching the abutting portion 625 side from the placement surface portion 622 formed in the placement portion 620 toward the bottom surface side of the lower case 60. It is formed at an inclined part.

  In the instrument device according to the first embodiment configured as described above, assembly is performed as follows. First, the instrument body 11 constituting a part of each indicating instrument 10 is assembled and fixed to the circuit board 30 and is electrically drawn, and the circuit board 30 is set with the lower case 60 as a reference in this state. . Next, the display panel 20 is placed on the front side of the middle case 40 and set in the lower case 60.

  At this time, after the middle case 40 is placed and set at a predetermined position with respect to the lower case 60, when the middle case 40 and the lower case 60 are assembled, they are provided at the edge of the opening window 623 of the lower case 60. Since the hook portion 412 provided in the middle case 40 can be assembled along the inclined portion of the engagement receiving portion 624, the assembling work can be performed satisfactorily.

  Subsequently, the base side of the pointer 13 is press-fitted and fixed to the distal end side of the pointer shaft 12 provided in each instrument body 11. As a result, the circuit board 30, the middle case 40, and the display board 20 to which the instrument body 11 is assembled with the lower case 60 as a reference are set in a stacked state. Furthermore, the facing panel member 52 and the see-through panel member 51, which are the upper case 50, are overlapped and assembled on the lower case 60 side, so that the locking portions 524 provided on the look-out panel member 52 and the see-through panel member 51, respectively. 510 is fed along the frame-shaped engaging portion 600 provided on the lower case 60 side, and the hook portions 522 and 512 provided in the respective locking portions 524 and 510 are engaged with the frame-shaped engaging portion 600. Retains retention.

  At this time, the intermediate case 40 is placed between the upper case 50 and the lower case 60 only by engaging and fixing the locking portions 524 and 510 provided on the upper case 50 side with the engaging portion 600 of the lower case 60. The intermediate case 40 can be clamped and held via the provided flange portion 400. Further, at the same time as the engagement and fixing, the circuit board 30 can be sandwiched and held between the middle case 40 and the lower case 60, and the assembly work can be made more efficient.

  Further, when disassembling (removing) the instrument device, the locking portions 524 and 510 provided on the facing panel member 52 and the see-through panel member 51 serving as the upper case 50 and the frame shape provided on the lower case 60, respectively. When the engagement state with the engagement portion 600 is released, the length of the elastic arm pieces 521 and 511 provided in the respective locking portions 524 and 510 is relatively long. It is possible to release the engagement with the engaging portion 600 while bending the.

  Subsequently, the circuit board 30 and the middle case 40 assembled to the lower case 60 rise toward the circuit board 30 at a position that is recessed so as to protrude from the bottom surface of the lower case 60 toward the circuit board 30 side. A mounting portion 620 including the formed rising wall portion 621 and a mounting surface portion 622 that supports the rear side of the circuit board 30 continuously with the rising wall portion 621 is provided, and the mounting portion 620 includes: A recessed space portion S is formed from a rising wall portion 621 that is formed to rise toward the circuit board 30 side, and a mounting surface portion 622 that supports the rear side of the circuit board 30 continuously with the rising wall portion 621. An opening window portion 623 is provided on the placement surface portion 622, and a locking claw portion provided on the elastic arm piece 411 is continuous with the placement surface portion 622 that is an edge portion of the opening window portion 623. An engagement receiving portion 624 that engages with the hook portion 412 is provided, and a mounting surface portion 622 side that is an edge portion of the opening window portion 623 facing the engagement receiving portion 624 is integrally formed from the lower case 60. The abutting portions 625 that can come into contact with the ribs 413 are provided, and slit portions 626 are provided on both sides of the abutting portion 625 so that the abutting portions 625 are easily bent. Even when the elastic arm piece 411 is formed with a comparatively short size when removing it, the hook portion 412 formed of a locking claw portion provided on the elastic arm piece 411 is placed on the lower case 60 side. When the pressure is applied to the abutting portion 625 so as to release the engagement with the provided engagement receiving portion 624, the abutting portion 625 is easily bent by the slit portion 626. Are those capable of reducing the load applied to the arm piece 411, can unleash an engagement state without breaking the elastic arm piece 411, can be removed inner case 40 and the circuit board 30 easily.

  It should be noted that the rib 413 provided on the elastic arm piece 411 can provide an instrument device having excellent earthquake resistance, which is one of the original purposes. As a result, abnormal noise such as stagnation due to resonance or the like can be provided. Can also be suppressed.

  FIG. 8 shows a second embodiment of the present invention, which is substantially the same as the first embodiment shown in FIGS. 1 to 7 described above, and therefore the main part configuration of the instrument device is omitted.

  Similarly to the first embodiment described above, the middle case 40 is provided with a flange portion 400 that protrudes outward in the horizontal direction at the upper peripheral edge of the middle case 40, and this flange portion 400 is connected to the upper case 50. It is provided so as to be sandwiched and held with the lower case 60.

  In addition, in the central region of the middle case 40, a locking portion 410 including an elastic arm piece 411, a hook portion 412, and a rib 413 is provided at appropriate locations (two locations) integrally with the middle case 40 toward the lower case 60 side. It has been.

  On the lower case 60 side, a mounting portion 620 that is recessed in a frame shape from the bottom surface portion of the middle case 40 is provided at a position corresponding to the locking portion 410 of the middle case 40. The height dimension and the height dimension of the substrate receiving portion 610 are set to be the same height dimension.

  At this time, as the mounting portion 620, a rising wall portion 621 that is formed to rise toward the circuit board 30 side, and a mounting surface portion 622 that supports the rear side of the circuit board 30 continuously with the rising wall portion 621. A recessed space portion S is formed from the mounting surface portion 622, and an opening window portion 623 is provided in the mounting surface portion 622, and a through hole 31 is provided in the circuit board 30 corresponding to the position of the opening window portion 623.

  In addition, an engagement receiving portion 624 that is engaged with a hook portion 412 that is a locking claw portion provided on the elastic arm piece 411 is provided continuously with the mounting surface portion 622 that is an edge portion of the opening window portion 623, and this An abutting portion 625 that can be brought into contact with the rib 413 integrally from the lower case 60 is provided on the mounting surface portion 622 side that is an edge portion on the opening window 623 side facing the engagement receiving portion 624, and this abutting portion. Slit portions 626 are provided on both sides of 625 to make the abutting portion 625 easy to bend.

  Similarly to the first embodiment, the engagement receiving portion 624 gradually approaches the abutting portion 625 side from the placement surface portion 622 formed on the placement portion 620 toward the bottom surface side of the lower case 60. It is formed in the inclination part which inclines to.

  In the second embodiment, cut portions 627 are provided on both end sides of the engagement receiving portion 624.

  In the instrument device according to the second embodiment configured as described above, the circuit board 30, the middle case 40, and the display in which the instrument body 11 is assembled with the lower case 60 as a reference, as in the first embodiment described above. The plate 20 is set in a laminated state. Furthermore, the facing panel member 52 and the see-through panel member 51 are overlapped and assembled on the lower case 60 side so that the facing panel member 52 and the see-through panel member 51 are the same as in the first embodiment described above. It is fixed and held.

  At this time, after the middle case 40 is placed and set at a predetermined position with respect to the lower case 60, when the middle case 40 and the lower case 60 are assembled, they are provided at the edge of the opening window 623 of the lower case 60. Since the hook portion 412 provided in the middle case 40 is guided along the inclined portion of the engagement receiving portion 624 and can be assembled, the assembling work can be performed satisfactorily. By providing the cut portions 627 on both sides of the receiving portion 624, the rigidity of the cut portion 627 itself can be reduced. When the middle case 40 and the lower case 60 are assembled, the edge of the opening window portion 623 of the lower case 60 When the hook portion 412 provided in the middle case 40 is fed along the engagement receiving portion 624 provided in the portion, the engagement receiving portion 624 bends and damages the hook portion 412. Can be fed without, can be carried out further even assembly work better.

  Similarly to the first embodiment described above, even when the instrument device is disassembled (removed), the engaging portion between the engaging portions 524 and 510 provided on the upper and lower cases 50 and 60 and the engaging portion 600 is used. In this case, since the elastic arm pieces 521 and 511 provided in the respective locking portions 524 and 510 are relatively long, the respective elastic arm pieces 521 and 521 have a relatively long length. The state of engagement with the engaging portion 600 can be easily released while bending 511.

  Subsequently, when the circuit board 30 and the middle case 40 assembled to the lower case 60 are removed, the elastic arm piece 411 formed with a relatively short size is substantially the same as the first embodiment described above. Even if it exists, the butting part 625 which can contact | abut to the rib 413 integrally from the lower case 60 is provided in the mounting surface part 622 side which is an edge part by the side of the opening window part 623 facing the engagement receiving part 624. The slit portions 626 for facilitating the bending of the abutting portion 625 are provided on both sides of the abutting portion 625, so that the hook portion 412 provided on the elastic arm piece 411 is provided on the lower case 60 side. Since the abutting portion 625 is easily bent when pressed against the abutting portion 625 so as to release the engagement with the engagement receiving portion 624, the load applied to the elastic arm piece 411 can be reduced. In Ri elastic arm piece 411 can unleash an engagement state without breaking the, which disassembly can be carried out satisfactorily, it is possible to remove the inner case 40 and the circuit board 30 easily.

  Further, the circuit board 30 sandwiched and held between the middle case 40 and the lower case 60 can be firmly held between the middle case 40 and the lower case 60 by the locking portion 410 provided with the rib 413 provided on the middle case 40. In addition, the middle case 40 sandwiched and held between the upper and lower cases 50 and 60 can be engaged and held with the lower case 60 side, and an instrument device having excellent earthquake resistance is provided. As a result, it is possible to suppress the generation of abnormal sounds such as stagnation due to resonance.

  In addition, since the engaging portion 410 integrally provided from the middle case 40 is disposed in the recessed space portion S region of the placement portion 620 including the rising wall portion 621 and the placement surface portion 622, the bottom surface of the lower case 60 The locking part 410 can be formed without protruding from the side, and the problem that the locking part 410 hits from the outside and breaks can also be prevented.

  The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the present invention. For example, in the embodiment, a pointer-type indicating instrument 10 will be described as an example. However, it may be used as an indicator by a display device including a liquid crystal display element, for example. In some cases, the circuit board 30 is assembled to the middle case 40, and the middle case 40 with the circuit board 30 assembled is used as the upper case. The work efficiency of assembly / removal can be improved even if it is configured to be sandwiched and fixedly held between 50 and the lower case 60.

  In addition, as described in detail in the above-described embodiment, the description has been given by taking the vehicle instrument device as an example. However, the instrument device is not limited to the vehicle instrument device, but is a meter for a special vehicle such as a marine instrument or an agricultural machine or construction machine. The present invention can be applied to an apparatus and the like, and is not limited to a pointer type or a liquid crystal indicating instrument, but can be applied to an indicator instrument using a display element such as an EL display panel. There is a similar effect.

DESCRIPTION OF SYMBOLS S Recessed space part 10 Indicator instrument 11 Instrument main body 12 Pointer shaft 13 Pointer 20 Display board 21 Display part 22 Through hole 30 Circuit board 31 Through hole 40 Middle case 41 Side wall part 42 Horizontal wall part 43 Cylindrical part 44 Reflecting wall part 45 Reflection Surface 50 Upper case 51 Perspective panel member 52 Side panel member 60 Lower case 70, 71 Light source (light emitting diode)
400 flange portion 410 locking portion 411 elastic arm piece 412 hook portion 413 rib 510 locking portion 511 elastic arm piece 512 hook portion 513 rib 520 engaging portion 521 elastic arm piece 522 hook portion 523 rib 524 locking portion 600 engaging portion 610 Substrate receiving portion 620 Mounting portion 621 Standing wall portion 622 Mounting surface portion 623 Opening window portion 624 Engagement receiving portion 625 Abutting portion 626 Slit portion 627 Cutting portion

Claims (4)

  A display board disposed on the front side of the indicator instrument, a circuit board made of a hard material for mounting the indicator instrument, and a middle case made of a resin material placed on the front side of the circuit board and mounting the display board And an upper case made of a resin material that is disposed on the front side of the middle case and at least the front side can be seen through, and a lower case made of a resin material that covers the middle case and the circuit board In addition, a flange portion for mounting on the peripheral edge portion on the upper end side of the lower case is provided on the peripheral edge portion of the middle case, and an elastic arm piece is provided on the back surface portion on the center side of the intermediate case. A hook portion comprising a locking claw portion is provided, and a rib is projected from the elastic arm piece on the back surface side of the hook portion, and the bottom surface of the lower case is located at a position corresponding to the hook portion. Said times from the part A mounting portion that protrudes toward the board is provided, and the mounting portion supports the rear side of the circuit board continuously with the rising wall section that is formed to rise toward the circuit board side. An opening window portion is provided on the mounting surface portion, and an engagement receiving portion is provided on an edge of the opening window portion so as to be engaged with the hook portion continuously with the mounting surface portion. In addition, an abutting portion that can be brought into contact with the rib integrally from the lower case is provided on the side of the opening window facing the engagement receiving portion, and an abutting portion is provided on both sides of the abutting portion. An instrument device comprising a slit portion for facilitating bending.   The instrument according to claim 1, wherein the receiving portion is formed by an inclined portion that gradually inclines toward the abutting portion as it goes from the mounting portion toward the bottom surface of the lower case. apparatus.   The instrument device according to claim 1, wherein a cut portion is provided on both sides of the receiving portion. The instrument device according to any one of claims 1 to 3, wherein the circuit board is sandwiched and held between the lower case and the middle case.

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