JP2006145303A - Instrument for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an instrument for a vehicle capable of stably fixing a dial indicated by a needle to a housing. <P>SOLUTION: The instrument 10 for the vehicle comprises the housing 13 made of resin material, in which a boss section 15 is formed around a shaft through hole 15b penetrating a needle shaft section 18a of the needle 18, and an opening 17 is formed along the peripheral edge 15a of the boss section 15. The instrument 10 also comprises the dial 20 that is arranged to cover the opening 17 and has a display section 21 indicated by the needle 18. A rib section 30 for supporting this dial 20 from the rear face 20b side of the dial 20 is integrally formed in the boss section 15 outward in the radial direction of the boss section 15. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an instrument for a vehicle in which a housing made of a resin material is covered with a dial having a display portion indicated by a pointer.

  In a general vehicle instrument, as shown in FIGS. 4 and 5, the light emitted from the light source K is reflected by a reflecting portion 1 a formed in an upper case (housing) 1, and a display portion 2 a such as characters and scales is displayed. The dial 2 on which is formed is illuminated from the back side.

  The upper case 1 has a boss portion 3, and an opening 4 is formed along the outer peripheral edge of the boss portion 3.

  The opening 4 is covered with a dial plate 2, and a pointer shaft portion 5 a of a pointer 5 for pointing the display portion 2 a on the surface of the dial plate 2 is passed through the boss portion 3.

The dial 2 is bonded and fixed to the end surface 3a of the boss 3 via a double-sided adhesive tape 6 (see Patent Document 1). In FIG. 4, the hatched area is the double-sided adhesive tape 6.
JP-A-8-128863

  By the way, in the above-mentioned vehicle instrument, since the dial plate 2 is bonded and fixed to the end surface 3a of the boss portion 3, the support area for supporting the dial plate 2 is narrowed, and the dial plate 2 is fixed in a stable state. There was a problem that was difficult.

  Then, this invention makes it a subject to provide the meter for vehicles which can fix a dial stably.

  In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that a boss portion is formed around a shaft through hole through which the pointer shaft portion of the pointer is inserted, and an opening portion is formed along the outer peripheral edge of the boss portion. A vehicular instrument comprising a housing made of a resin material formed with a dial, and a dial plate disposed so as to cover the opening and provided with a display portion indicated by the pointer. A rib portion for supporting the dial from the back side of the dial is integrally formed on the outer peripheral edge of the dial toward the outer side in the radial direction of the boss.

  According to the first aspect of the present invention, since the rib portion that supports the back side of the dial is integrally formed with the boss portion, the dial can also be supported by the rib portion. Therefore, the support area for supporting the dial can be expanded, and the dial can be stably fixed.

  In addition, since the rib portion that supports the dial plate has a rib shape, when molding a housing made of a resin material, it is possible to prevent deformation such as sink marks from occurring during molding, and to reduce the dimensional accuracy of the shape. Can be prevented.

  According to a second aspect of the present invention, in the vehicular instrument according to the first aspect, a plurality of the rib portions are formed, and each circumscribed line substantially coincides with an arbitrary curved line.

  According to the second aspect of the present invention, since the circumscribed line of each of the plurality of rib portions substantially coincides with an arbitrary curve, the rib portion has a support surface as if this arbitrary curve is the outer peripheral edge. Such a virtual support surface can be formed. Thereby, a more stable support state of the dial can be obtained.

  According to a third aspect of the present invention, in the vehicle instrument according to the first or second aspect, a light source is disposed in the housing, and light from the light source is applied to the display portion of the dial on the boss portion. A reflecting portion for directing is formed, and the reflecting portion is formed integrally with the rib portion.

  According to the invention of claim 3, since the reflection portion is formed integrally with the rib portion on the boss portion, the reflection portion is supported by the rib portion, and this reflection portion can be stabilized even if vibration or the like occurs. . For this reason, it is possible to reduce luminance unevenness of the light source.

  According to a fourth aspect of the present invention, in the vehicular instrument according to any one of the first to third aspects, the end surface of the boss portion that supports the dial is formed in a region where the rib portion is formed. It is characterized in that a recess is provided.

  According to invention of Claim 4, since the recessed part was provided in the area | region in which the rib part was formed among the end surfaces of a boss | hub part, it is more effective that deformation | transformation at the time of shaping | molding, such as a sink, occurs when resin-molding a housing. Therefore, it is possible to further prevent the reduction of the dimensional accuracy of the shape.

  According to the present invention, it is possible to provide a vehicular instrument that can expand the support area of the boss portion that supports the dial and can stably fix the dial.

  Next, an embodiment of a vehicle meter according to the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic front view showing a right half of a vehicle meter (vehicle meter) 10. The vehicle meter 10 includes a meter case 11, and the meter case 11 includes four analog display units, which are a tachometer (not shown), a speedometer S, a fuel gauge N, and a water temperature gauge (not shown). Is formed. Further, the meter case 11 is covered with a case cover (not shown).

  The meter case 11 has a lower case 12 and an upper case (housing) 13 (see FIG. 3).

  And between the lower case 12 and the upper case 13, as shown in FIG. 3, the circuit board | substrate 14 with which the light source K was electrically connected inside is arrange | positioned.

  The circuit board 14 is held by fixing a plurality of support legs 14 a and the like to the lower case 12. The upper case 13 is fixed to the circuit board 14 by a plurality of claws T, screws (not shown), and the like (see FIG. 3).

  The upper case 13 is formed of a resin material, and has a boss portion 15 and an opening portion 17 formed along the outer peripheral edge 15a of the boss portion 15 as shown in FIGS. Yes.

  The upper case 13 is formed with a plurality of bosses B as shown in FIG. Each boss B is provided with a screw (not shown) or the like, and an upper case 13 is fixed to the circuit board 14.

  The boss portion 15 has a cylindrical shape having a shaft through hole 15b penetrating the upper case 13, and protrudes toward the circuit board 14 (see FIG. 3).

  On the outer peripheral edge 15a of the boss portion 15, a plurality of rib portions 30 for supporting the dial plate 20 described later from the back surface 20b side of the dial plate 20 are integrally formed.

  Each rib part 30 is exhibiting the plate shape extended along the axial direction of the axial through-hole 15b, and what is called a rib shape. As shown in FIG. 2, each rib portion 30 is formed so as to protrude radially outwardly in the radial direction of the boss portion 15. In addition, each rib portion 30 is formed at a portion facing the opening 17 in the outer peripheral edge 15 a of the boss portion 15.

  And the protrusion amount of each rib part 30 is different, respectively, and the circumscribed line of the front-end | tip of each rib part 30 is substantially in agreement with one arbitrary curve.

  Further, each of these rib portions 30 is formed integrally with a reflecting portion 31 formed on the outer peripheral edge 15 a of the boss portion 15.

  The reflecting portion 31 is for directing light from the light source K toward the display portion 21 of the dial plate 20, and has a curved shape extending from the outer peripheral edge 15 a of the boss portion 15 into the opening portion 17. ing. Moreover, this reflection part 31 is formed in the sector shape along the outer periphery 15a of the boss | hub part 15 (refer FIG. 2).

  Furthermore, the end surface 15c that supports the dial plate 20 of the boss portion 15 is provided with a plurality of concave portions (meat stealing portions) 32 in an area where the rib portion 30 is provided.

  Here, the “region where the rib portion 30 is provided” is a region between the shaft through hole 15b and the rib portion 30 and also includes the vicinity thereof (see FIG. 2).

  As shown in FIG. 2, each recess 32 is provided by stealing the end surface 15 c into a fan shape along the edge of the shaft through hole 15 b.

  A pointer shaft portion 18a of the pointer 18 that rotates as the motor M is driven is rotatably installed in the shaft through hole 15b of the boss portion 15. The pointer 18 indicates a predetermined display portion 21 on the front surface 20a of the dial plate 20.

  Here, the motor M is disposed between the circuit board 14 and the lower case 12, and the pointer shaft portion 18 a passes through a through hole 14 b formed in the circuit board 14.

  As shown in FIG. 2, the opening 17 is formed in a fan shape along the outer peripheral edge 15 a of the boss 15. A light source K, here an LED lamp, is installed inside the opening 17 so that light from the light source K can be transmitted. The inner peripheral surface 17a of the opening 17 can reflect light from the light source K.

  One of the openings 17 faces the circuit board 14, and the other is covered with the dial 20.

  The dial plate 20 includes a display unit 21 made of a light-transmitting material. By allowing the light from the light source K to pass through the display unit 21, the driver can easily display the display unit 21. It can be visually recognized.

  As shown in FIG. 1, the display unit 21 is a scale (scale), characters such as F and E, numbers such as 0 and 20, icons, and the like.

  Further, as shown in FIG. 3, the dial plate 20 is supported by the end surface 15 c of the boss portion 15 of the upper case 13 and the periphery thereof, and the rib portion 30, and is bonded and fixed via a double-sided adhesive tape 33. .

  The double-sided pressure-sensitive adhesive tape 33 surrounds the periphery of the shaft through hole 15 c and is provided to the tip of the rib portion 30. In FIG. 2, the hatched portion is the double-sided adhesive tape 33.

  Next, the operation of the vehicle measuring instrument 1 of the present invention will be described.

  In order to assemble the vehicle measuring instrument 1, first, the motor M is disposed at a predetermined position of the lower case 11, and the circuit board 14 is accommodated in the lower case 11.

  At this time, after positioning the lower case 11 and the circuit board 14, the support legs 14 a of the circuit board 14 are fixed to the lower case 11.

  In order to fix the support leg 14a, for example, the tip end of the support leg 14a is formed in a bowl shape, and is inserted into a locking hole (not shown) provided in the lower case 11 and locked.

  Further, the motor M and the light source K to which the pointer shaft portion 18a is attached are respectively attached in advance to predetermined positions on the circuit board 14.

  Next, the upper case 13 is fixed to the circuit board 14. At this time, with the circuit board 14 and the upper case 13 positioned, the claw T of the upper case 13 is inserted into a claw locking hole (not shown) formed in the circuit board 14 to be locked and fixed. Tighten the screws that will not be used.

  And the double-sided adhesive tape 33 is affixed over the end surface 15c of the boss | hub part 15 of the upper case 13, and this circumference | surroundings and the rib part 30. FIG. At this time, the recess 32 formed on the end surface 15 c of the boss 15 is covered with the double-sided adhesive tape 33.

  Then, after positioning, the dial plate 20 is bonded and fixed to the double-sided pressure-sensitive adhesive tape 33 affixed across the end surface 15 c of the boss portion 15 of the upper case 13 and its periphery and the rib portion 30.

  An end portion (not shown) of the dial plate 20 is fixed by being held by a holding portion (not shown) formed in the upper case 13.

  The pointer 18 is fixed to the pointer shaft portion 18a inserted through the shaft through hole 15b of the boss portion 15 after the dial plate 20 is bonded.

  Finally, the upper case 13 is covered with a case cover (not shown), and the cover case is fixed to the upper case 13. Thus, the assembly of the vehicle instrument 1 is completed.

  Thus, the dial plate 20 is supported by the end surface 15c of the boss portion 15 and the periphery thereof and the rib portion 30 formed integrally with the boss portion 15, and the end surface 15c of the boss portion 15 and the periphery thereof. And a double-sided adhesive tape 33 affixed to the rib portion 30.

  Therefore, the support area for supporting the dial plate 20, that is, the adhesion area by the double-sided pressure-sensitive adhesive tape 33 can be enlarged, and the dial plate 20 can be stably fixed.

  Furthermore, since the rib part 30 is formed in the outer periphery 15a of the boss | hub part 15 which faced the opening part 17 which the dial 20 has covered, the back surface 20b side of the dial 20 is supported effectively. be able to. Therefore, the dial 20 can be fixed in a more stable state.

  Further, the protruding amounts of the plurality of rib portions 30 are different from each other, and the circumscribed line at the tip of each rib portion 30 is substantially coincident with one arbitrary curve. For this reason, the plurality of rib portions 30 can form an imaginary support surface having an arbitrary one curve as an outer peripheral edge. And the stress of the direction which the dial 20 peels can be disperse | distributed, and the dial 20 can be supported in the more stable state.

  Moreover, since the rib part 30 and the reflective part 31 are integrally formed in the boss | hub part 15, the reflective part 31 can also be supported by the rib part 30. FIG. Therefore, even when the reflection unit 31 is vibrated, the luminance of the light source K can be reduced.

  Then, the upper case 13 made of a resin material is cooled and molded after pouring molten resin into a predetermined mold.

  Here, since the rib portion 30 that supports the dial plate 20 has a rib shape, when the upper case 13 is cooled and molded, deformation such as sink marks is prevented from occurring and the size of the shape is prevented. A reduction in accuracy can be prevented.

  Further, the upper case 13 is provided with a recess 32 in an area where the rib portion 30 is formed in the end surface 15 c of the boss portion 15. Therefore, when cooling and molding the upper case, it is possible to more effectively prevent the occurrence of deformation during molding such as sink marks, and further prevent the reduction of the dimensional accuracy of the shape.

  In particular, since the concave portion 32 is provided in the region where the rib portion 30 is formed, deformation during molding that occurs in the rib portion 30 can be more effectively prevented.

  As described above, in the vehicle instrument 10 of the present invention, the boss portion 15 is formed around the shaft through hole 15b through which the pointer shaft portion 18a of the pointer 18 is inserted, and the outer peripheral edge 15a of the boss portion 15 is formed. A housing 13 made of a resin material along which an opening 17 is formed, and a dial plate 20 that is arranged so as to cover the opening 17 and on which a display portion 21 indicated by a pointer 18 is formed, On the boss portion 15, a rib portion 30 that supports the dial plate 20 from the back surface 20 b side of the dial plate 20 is integrally formed toward the outer side in the radial direction of the boss portion 15.

  Thereby, the dial plate 20 can be supported not only by the end face 15c of the boss portion 15 but also by the rib portion 30 formed integrally with the boss portion 15, and the support area of the dial plate 20 can be enlarged. . Therefore, the dial 20 can be supported stably.

  In addition, when molding the upper case 13 made of a resin material, it is possible to prevent deformation such as sink marks from occurring during molding, and to prevent a reduction in dimensional accuracy of the shape.

  And in the vehicle instrument 10 of this invention, while the rib part 30 is formed in multiple numbers, the circumscribed line of each rib part 30 substantially corresponds with one arbitrary curve.

  Thereby, it is possible to form a virtual support surface as if an arbitrary curve is the outer peripheral edge. Therefore, the dial plate 20 can be effectively supported, and the dial plate 20 can be fixed in a more stable state.

  Further, in the vehicle instrument 10 of the present invention, the light source K is disposed in the upper case 13, and the reflection portion 31 for directing the light from the light source K toward the display portion 21 of the dial 20 is formed in the boss portion 15. The reflecting portion 31 is formed integrally with the rib portion 30.

  As a result, the reflecting portion 31 formed integrally with the rib portion 30 is supported by the rib portion 30, so that the reflecting portion 31 can be stabilized even if vehicle vibration or the like occurs. It becomes possible to reduce luminance unevenness.

  Furthermore, in the vehicle instrument 10 of the present invention, the end surface 15c that supports the dial plate 20 of the boss portion 15 is provided with a recess 32 in a region where the rib portion 30 is formed.

  Thereby, when the upper case 13 is resin-molded, it is possible to more effectively prevent the occurrence of deformation such as sink marks and the like, and further prevent the reduction of the dimensional accuracy of the shape of the upper case 13.

  Furthermore, since the recessed part 32 is formed in the area | region which formed the rib part 30, the deformation | transformation at the time of a shaping | molding which arises in the rib part 30 can be prevented more effectively.

  As described above, in the vehicle instrument according to the present invention, the support area for supporting the dial plate 20 by the rib portion 30 is enlarged, and deformation at the time of molding the upper case 13 by the concave portion 32 is effectively prevented. Is possible.

  Although one embodiment according to the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to the above-described embodiment. Design changes and the like within the scope not departing from the gist of the present invention are included in the present invention.

  For example, the protruding amount of each of the plurality of rib portions 30 may be constant, or a plurality of rib portions 30 may not be formed.

  Even when the protruding amounts of the plurality of rib portions 30 are constant, the dial 20 can be supported in a sufficiently stable state.

  Further, when a plurality of rib portions 30 are not provided, that is, when only one rib portion is provided, the amount of resin material used is reduced, and the weight of the upper case 13 can be reduced.

  Furthermore, in the above-described embodiment, the dial plate 20 is bonded and fixed by the double-sided adhesive tape 33, but an adhesive or the like may be used as long as the dial plate 20 can be bonded and fixed to the upper case 13.

It is the schematic front view which showed the right half of the vehicle meter which concerns on this invention. It is the partial front view which abbreviate | omitted the cover case, dial, and pointer | guide of the vehicle instrument which concerns on this invention. It is AA sectional drawing in FIG. It is the partial front view which abbreviate | omitted the cover case of the conventional vehicle instrument, the dial, and the pointer | guide. It is BB sectional drawing in FIG.

Explanation of symbols

10 Vehicle Instrument 13 Upper Case (Housing)
15 Boss portion 15a Outer peripheral edge 17 Opening portion 18 Pointer 18a Pointer shaft portion 20 Dial 20a Front surface 20b Back surface 21 Display portion 30 Rib portion

Claims (4)

A boss portion is formed around a shaft through hole through which the pointer shaft portion of the pointer is inserted, and a housing made of a resin material in which an opening portion is formed along the outer peripheral edge of the boss portion, and the opening portion is covered. A vehicular meter provided with a dial plate that is arranged and formed with a display unit indicated by the pointer,
A rib for supporting the dial from the back side of the dial is integrally formed on the outer peripheral edge of the boss toward the outside in the radial direction of the boss. Instrument.   The vehicular instrument according to claim 1, wherein a plurality of the rib portions are formed, and each circumscribed line substantially coincides with an arbitrary curve. A light source is disposed in the housing, and a reflection part for directing light from the light source to the display part of the dial is formed on the boss part.
The vehicle instrument according to claim 1, wherein the reflecting portion is formed integrally with the rib portion.   The vehicular instrument according to any one of claims 1 to 3, wherein a concave portion is provided in an area where the rib portion is formed on an end surface of the boss portion that supports the dial.

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