JP2009085660A - Instrument device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an instrument device having inexpensive cost by simplifying a structure, concerning an instrument device using a plurality of plates of front glasses. <P>SOLUTION: In this instrument device equipped with a case 1 comprising a synthetic resin, an instrument 2 stored in the case 1, and first and second front glasses 4, 5 comprising a synthetic resin fixed to a flange part 3 formed on the opening side of the case 1, the flange part 3 has a step part 13 for holding the first fringe part 12 of the first front glass 4, and an end 14 other than the step part 13, and a circular projection part 23 fixed to the first fringe part 12 and the end 14 is provided on the second fringe part 22 of the second front glass 5. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an instrument device using a plurality of front glasses.

  For example, in an instrument device for a vehicle or a ship, there is, for example, the following Patent Document 1 or Patent Document 2 as an attempt to suppress the occurrence of fogging on the inner surface of the front glass. The vehicle instrument (instrument device) described in Patent Document 1 separates the front glass plate 3 and the transparent heat insulating plate 4 and arranges them on the opening side of the case 1 with packings 5 and 6 interposed therebetween. 2 is fixed to the opening side of the case 1. Thus, the heat insulating plate 4 is arranged inside the front glass plate 3, and the air between the front glass plate 3 and the heat insulating plate 4 and the inside of the case 1 are arranged. It is intended to suppress the occurrence of fogging on the inner surface of the front glass plate 3 by eliminating the circulation with the air.

FIG. 5 of Patent Document 2 shows a display device (instrument device) covered with a display unit 65 and a protective body 69 whose front side can be seen through. A protective body 69 around which the packing P is wound is disposed on the opening side of the lower frame 7, and the flange portion 67 of the display unit 65 is welded and fixed to the lower frame 7 with the packing P compressed. Although the details are not described, a protective body 69 is arranged inside the display unit 65 as in the above-mentioned Patent Document 1, and the air between the display unit 65 and the protective body 69 and the inside of the lower frame body 7 are arranged. It is intended to suppress the occurrence of fogging on the inner surface of the display unit 65 by eliminating the circulation with the air.
Japanese Utility Model Publication No. 40-7815 JP 2002-267503 A

  However, in the vehicle instrument of Patent Document 1, packings 5 and 6 must be used, and there are problems that the number of parts increases, the assembling workability decreases, and the cost increases. Further, the display device of Patent Document 2 also requires packing P, leading to an increase in cost.

  The present invention has been made in view of such a point, and an object of the present invention is to provide an instrument device that uses a plurality of front glass plates and that has a simplified structure and is inexpensive.

  In order to achieve the above object, the present invention provides a case made of a synthetic resin, a meter housed in the case, and a first and a first made of a synthetic resin fixed to a flange portion formed on the opening side of the case. 2 and a front glass, wherein the flange portion has a stepped portion that holds the first peripheral edge of the first front glass, and an end other than the stepped portion, An annular protrusion fixed to the first peripheral edge and the end is provided on the second peripheral edge of the second front glass.

  The flange portion, the first peripheral edge portion, and the annular protrusion are made of the same material.

  Further, a press-fitting protrusion is provided at a side wall portion of the first peripheral edge portion or at the step portion portion corresponding to the side wall.

  In an instrument device using a plurality of front glasses, the structure can be simplified and an inexpensive instrument device can be obtained.

  The present invention will be described as an embodiment of an instrument device provided in a vehicle, for example. FIG. 1 is a cross-sectional view of an instrument device showing an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a main part of the instrument device.

  The meter device includes a case 1 made of synthetic resin, a meter 2 housed in the case 1, and first and second made of synthetic resin fixed to a flange portion 3 formed on the opening side of the case 1. Front glasses 4 and 5 are provided. The first front glass 4 and the second front glass 5 are spaced apart.

  The meter 2 includes a dial 6 on which an indicator portion (not shown) is printed, a pointer 7 provided on the front side of the dial 6 to indicate the indicator portion, and a dial 6 provided on the rear side of the dial 6. A holding member 8 made of a white synthetic resin, an instrument body 9 for rotating the pointer 7, LEDs 10, 10A as light sources for illuminating the indicator portion of the pointer 7 and dial 6, and the LED 10 , 10A and the instrument body 9 are composed of a hard circuit board 11 and the like fixed by soldering.

  The case 1 is made of, for example, black ABS resin, and a flange portion 3 is formed on the opening side. The flange portion 3 includes a step portion 13 on which the first peripheral edge portion 12 of the first front glass 4 is placed and an end portion 14 other than the step portion 13. The depth of the step portion 13 is the same as the thickness of the first peripheral edge portion 12 of the first front glass 4. A first peripheral wall 15 projects from the peripheral side of the end portion 14.

  The first front glass 4 includes a first transparent portion 16 made of, for example, an acrylic resin that is colorless and transparent, a first peripheral portion 12 that is integrally formed around the first transparent portion 16, and a first peripheral portion 12. It consists of a hanging wall 17 extending to the dial 6 side. The hanging wall 17 is provided to prevent the inside from being seen through the gap between the dial 6 and the case 1. The first peripheral edge portion 12 and the hanging wall 17 are made of black ABS resin which is the same as the case 1 (that is, the same as the flange portion 3). Further, press-fitting protrusions 19 having, for example, a triangular cross section are provided at 18 positions on the side wall of the first peripheral edge portion 12. The press-fitting projection 19 is for press-fitting and holding the first front glass 4 on the step inner peripheral wall 20 of the end portion 14 when holding the first front glass 4 on the step portion 13 of the case 1. It may be good or partially provided.

  Similar to the first front glass 4, the second front glass 5 is integrally formed around the second see-through portion 21 made of a colorless and transparent second see-through portion 21 made of, for example, acrylic resin, It consists of the 2nd peripheral part 22 which consists of black ABS resin which is the same as the 1st peripheral part 12 of the 1st front glass 4. FIG. The second peripheral edge 22 is provided with an annular protrusion 23 that contacts both the first peripheral edge 12 and the end 14 of the case 1.

  A second peripheral wall 24 protrudes from the peripheral side portion of the second peripheral edge 22 that is separated from the annular protrusion 23. The position of the second peripheral wall 24 corresponds to the first peripheral wall 15 provided in the case 1, and the first and second peripheral walls 15, 24 are substantially between the end 14 of the case 1 and the second peripheral edge 22. It is designed to meet at an intermediate position.

  A rib 25 extending toward the second peripheral edge 22 of the second front glass 5 is provided on the inner side (on the first see-through portion 16 side) of the first peripheral edge 12 spaced from the annular protrusion 23. By providing the annular protrusion 23, the second peripheral wall 24 (or the first peripheral wall 15), and the rib 25 apart from each other, a first space 26 and a second space 27 are formed.

  The adhering of the first front glass 4 and the second front glass 5 to the flange portion 3 of the case 1 will be described. First, the press-fitting protrusion 19 of the first peripheral edge portion 12 is press-fitted into the stepped inner peripheral wall 20 of the end portion 14 provided on the flange portion 3 of the case 1 in which the instrument 2 is housed, and the first front glass 4 is attached to the case 1. The step portion 13 is held.

  Next, the second front glass 5 is placed on the first front glass 4. At this time, the tip of the annular protrusion 23 provided on the second peripheral edge 22 comes into contact with both the first peripheral edge 12 of the first front glass 4 and the end 14 of the case 1. By applying vibration and pressure to the second peripheral portion 22 in this state, frictional heat is generated on the contact surface, and the resins are melted and joined (welded) by so-called ultrasonic welding method, vibration welding method, etc. The annular protrusion 23 is fixedly welded to the first peripheral edge portion 12 and the entire periphery of the end portion 14. In addition, if a burr | flash generate | occur | produces from the welding location (joining location) in the case of welding, this burr | flash will remain in the 1st space 26 or the 2nd space 27. FIG.

  As described above, by fixing the annular protrusion 23 and the end portion 14, it is possible to prevent water from entering the instrument device from the joint between the second front glass 5 and the case 1. Further, the annular protrusion 23 and the first peripheral edge portion 12 are fixed, so that the air flow between the first front glass 4 and the second front glass 5 is suppressed, and the second front glass 5. It is possible to suppress the occurrence of fogging on the inner surface of the second see-through portion 21. Therefore, the visibility of the dial 6 indicator portion viewed through the second see-through portion 21 and the first see-through portion 16 is not lowered.

  As described above, the case 1 made of synthetic resin, the instrument 2 housed in the case 1, and the first and second made of synthetic resin fixed to the flange portion 3 formed on the opening side of the case 1. Front flanges 4 and 5 are provided. The flange portion 3 includes a step portion 13 that holds the first peripheral edge portion 12 of the first front glass 4 and an end portion 14 other than the step portion 13. By providing the annular protrusion 23 fixed to both the first peripheral edge 12 and the end 14 on the second peripheral edge 22 of the front glass 5 of the front glass 5, it is only necessary to weld without using a packing as in the prior art. Therefore, the structure can be simplified and an inexpensive instrument device can be obtained.

  Further, by using the annular protrusion 23, the first peripheral edge portion 12 and the flange portion 3 as the ABS resin made of the same resin material, the welding (bonding) strength at the time of welding can be increased. The resin material is not limited to ABS resin. Further, by providing the first space 26 and the second space 27 on both sides of the annular protrusion 23, the burr generated during welding stays in the first space 26 or the second space 27. It does not protrude between the second see-through portion 21 and the first see-through portion 16 or outside the case 1, and the appearance quality is not deteriorated.

  Further, press-fitting protrusions 19 are provided at 18 positions on the side wall of the first peripheral edge portion 12, and the press-fitting protrusions 19 are press-fitted into the step inner peripheral wall 20 of the end portion 14 to hold the first peripheral edge portion 12 on the step portion 13 of the flange portion 3. As a result, the case 1 and the first front glass 4 are integrated. Therefore, the first front glass 4 is not loose when the annular projection 23 of the second front glass 5 is welded to both the first peripheral edge portion 12 and the end portion 14 of the case 1. Welding is possible.

  The present invention is not limited to the above-described embodiment. For example, the press-fitting protrusion 19 is provided on the side wall 18 of the first peripheral edge portion 12, but is provided on the step inner peripheral wall 20 of the end portion 14 corresponding to the side wall 18. Also good. Further, the ribs 25 are provided on the first peripheral edge portion 12 to form the second voids 27, but the ribs may be provided on the second peripheral edge portion 22. Or you may make it provide in both the 1st peripheral part 12 and the 2nd peripheral part 22. FIG. Moreover, although the 1st surrounding wall 15 and the 2nd surrounding wall 24 were each provided in the edge part 14 of the case 1, and the 2nd peripheral part 22 of the 2nd front glass 5, you may make it provide in any one.

Sectional drawing of the instrument apparatus which shows embodiment of this invention. Sectional drawing of the principal part of the instrument device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case 2 Instrument 3 Flange part 4 1st front glass 5 2nd front glass 12 1st peripheral part 13 Step part 14 End part 18 Side wall 19 Press-fit protrusion 23 Annular protrusion

Claims (3)

  A meter device comprising a case made of synthetic resin, a meter housed in the case, and first and second front glass plates made of synthetic resin fixed to a flange portion formed on the opening side of the case And the said flange part has the level | step-difference part by which the 1st peripheral part of the said 1st front glass is hold | maintained, and edge parts other than this level | step-difference part, The 2nd peripheral part of the said 2nd front glass. An instrument device comprising: an annular protrusion fixed to the first peripheral edge and the end.   The instrument device according to claim 1, wherein the flange portion, the first peripheral edge portion, and the annular protrusion are made of the same material.   The instrument device according to claim 1 or 2, wherein a press-fitting protrusion is provided at a side wall portion of the first peripheral portion or the step portion portion corresponding to the side wall.

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