JP5758265B2 - Vehicle instrument - Google Patents

Description

  The present invention relates to a vehicle instrument that displays various states of a vehicle.

  Conventionally, a vehicle instrument provided in front of a driver's seat of a vehicle includes, for example, a printed circuit board to which an instrument part such as an illumination LED is attached, and a front side of the printed circuit board as disclosed in Patent Document 1 A panel-shaped front cover that covers the entire area and a rear cover that covers the entire area on the back side of the printed circuit board, and the printed circuit board and the front cover are assembled sequentially from the upper side to the substantially horizontal rear cover with the back side facing downward. It is supposed to be made.

  As a general structure for assembling the front cover to the rear cover, a structure in which a plurality of through holes formed in the rear cover and a plurality of engagement claws formed in the front cover are engaged with each other is known. ing.

Japanese Patent Laying-Open No. 2005-19741 (paragraphs 0069 to 0077, FIG. 2)

  By the way, in order to avoid interference with a plurality of instrument parts attached to the printed circuit board, the rear cover is formed with a plurality of recesses corresponding to the respective instrument parts on the front side and a plurality of recesses corresponding to the respective recesses. A convex part is formed in the back side, and the shape and position of the convex part differ for every vehicle type. Therefore, when the front cover is assembled to the rear cover, simply placing the rear cover on a work table or the like will cause the rear cover to rattle due to the plurality of convex portions, resulting in unstable assembly.Therefore, there is a jig for supporting and stabilizing the rear cover from below. Necessary for each vehicle type, the manufacturing cost of the jig increases, and it is necessary to replace the jig when switching the vehicle type to be manufactured, which takes time to change the jig setup.

  Further, since the rear cover has a panel shape, it is easily bent when a force is applied in a direction crossing the panel surface. Accordingly, when the front cover is pressed against the rear cover from above and the engaging claw is engaged with the through hole, the periphery of the through hole of the rear cover is bent by the pressing force that the through hole receives from the periphery of the engaging claw. As a result, the engaging claws may be half-hanged on the through-holes, resulting in poor assembly.

  The present invention has been made in view of such a point, and an object of the present invention is to reduce the manufacturing cost of the jig and to eliminate the trouble of changing the setup of the jig, thereby preventing the occurrence of assembly failure. It is to provide an instrument for a vehicle.

  In order to achieve the above object, the present invention is characterized in that a plurality of projections approaching a plurality of engaging portions or engaged portions formed on the rear cover are provided on the rear side of the rear cover. And

  Specifically, there are a plurality of engaging portions and engaged portions that are engaged with each other with an interval between the outer peripheral edge portions, and a plurality of concave portions are formed on the front side and correspond to the respective concave portions. A panel-like rear cover having a plurality of convex portions formed on the back side, a printed circuit board in which a plurality of instrument parts are attached corresponding to the respective concave portions of the rear cover, and assembled on the front side of the rear cover, and By pressing the rear cover against the rear cover from above with the other of the mating part and the engaged part being spaced apart from the outer peripheral edge, the rear side of the rear cover is directed downward. In a vehicle instrument comprising a front cover that engages an engaging portion with each engaged portion and is assembled to the front side of the rear cover and covers the front side of the printed circuit board, the following means for solving the problem Took.

  That is, according to the first aspect of the present invention, the plurality of protrusions are arranged on the back side of the rear cover so as to approach each of the engaging portion and the engaged portion, and from the convex portions of the rear cover. Are protruded integrally so as to protrude to the back side, and the tips of the protrusions are located on substantially the same plane.

  According to a second invention, in the first invention, the protrusions are provided at least in three places including two places on one side and one place on the other side with the central portion of the rear cover as the center, and the protrusions at the three places. It is located so that the center part of the said rear cover may be included in the inside of the triangle formed by (3).

  According to a third aspect, in the first or second aspect, the rear cover is provided with either one of the engaging portion and the engaged portion that engage with each other and the protrusion at a substantially center in the vehicle width direction. In the front cover, one of the engaging portion and the engaged portion corresponds to one of the engaging portion and the engaged portion provided substantially at the center of the rear cover in the vehicle width direction. It is provided in the position.

  In the fourth invention, in the vehicular instrument according to any one of the first to third aspects, an interval between any one of the engaging portion and the engaged portion approaching each other at a plurality of locations and the protrusion is Are substantially the same.

  In the first invention, when the rear cover is placed on the work table with the back side of the rear cover facing downward, the plurality of projections of the rear cover do not contact the work table, and the plurality of protrusions serve as legs of the rear cover. Since it comes in contact with the table, the rear cover is stable when placed on the work table. Therefore, it is possible to stably assemble the front cover to the rear cover simply by placing the rear cover on the work table, eliminating the need to manufacture a jig for assembly and reducing the cost of manufacturing the jig. It is possible to eliminate setup change. In addition, the plurality of protrusions increase the rigidity around each engaging portion or each engaged portion of the rear cover, so even if either the engaging portion or the engaged portion receives a pressing force from the other during assembly, It is difficult for the joint portion or the periphery of the engaged portion to bend, and it is possible to prevent the engagement between the engaging portion and the engaged portion from being half-hanged and to eliminate the assembly failure.

  In the second invention, since the rear cover is placed on the work table by three protrusions formed in the rear cover at a distance, the rear cover is further stabilized when placed on the work table, and the front cover is assembled to the rear cover. Is even easier.

  In the third invention, when the front cover is assembled to the rear cover by increasing the rigidity around the engaging portion or the engaged portion provided in the substantially central portion that is most easily bent by the panel-shaped rear cover, the central portion of the rear cover And the engaging portion and the engaged portion provided at the substantially central portion of the front cover and the rear cover can be prevented from being half-hanging each other.

  In the fourth aspect of the invention, since the rigidity around each engaging portion or each engaged portion of the rear cover is substantially the same, the balance of the force applied to the front cover is improved when the front cover is assembled to the rear cover. This eliminates the need for the operator to apply unnecessary pressing force, thus simplifying the assembly work.

It is a front view of the meter for vehicles concerning the embodiment of the present invention. It is a disassembled perspective view of the vehicle meter which concerns on embodiment. It is the perspective view which looked at the instrument main body which concerns on embodiment from the back side. It is a rear view of the rear cover concerning an embodiment. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of the preferred embodiment is merely exemplary in nature.

  FIG. 1 shows a vehicular instrument 1 according to an embodiment of the present invention. The vehicle meter 1 is housed in an instrument panel (not shown) located in front of the driver's seat so that the driver can grasp various states of the vehicle, and a speed meter that displays the speed of the vehicle in the center. 1a is located, and a tachometer 1b for displaying the engine speed is located on the left side in the vehicle width direction across the speed meter 1a, and the vehicle speed and the engine speed are located on the right side in the vehicle width direction. A substantially rectangular liquid crystal panel 10 displaying various states of the vehicle other than the vehicle is positioned.

  As shown in FIG. 2, the vehicle instrument 1 includes a substantially rectangular plate-like printed board 2 extending in the vehicle width direction, and covers the entire front side of the printed board 2 on the front side of the printed board 2. While the front cover 3 is disposed, a rear cover 4 is disposed on the back side of the printed circuit board 2 so as to cover the entire back surface side of the printed circuit board 2.

  The printed circuit board 2 is sandwiched and fixed between the front cover 3 and the rear cover 4 in a state where the printed circuit board 2 is assembled to the front side of the rear cover 4. A plurality of LEDs and the like are mounted on the back side with an instrument part 2a such as a movement for moving a connector or a pointer (see FIGS. 5 and 6).

  Further, a panel-like attachment member 20 for attaching the liquid crystal panel 10 to the printed circuit board 2 is provided on the surface side of the printed circuit board 2 on the right side in the vehicle width direction with a space from the printed circuit board 2.

  The rear cover 4 is a substantially rectangular resin molded product extending in the vehicle width direction. As shown in FIG. 4, the rear cover 4 protrudes from the panel-shaped bottom portion 41 and the outer peripheral edge of the bottom portion 41 toward the printed circuit board 2. And a peripheral wall 42 provided.

  A plate-like outer peripheral edge 43 extending outward is formed at the protruding end of the peripheral wall 42, and eight through holes (engaged parts) 43 a are formed in the outer peripheral edge 43.

  Two of each of the through holes 43a are formed at intervals in the vehicle width direction in each of the upper side portion and the lower side portion of the outer peripheral edge portion 43. Two of the through holes 43a are formed at intervals in the vertical direction.

  As shown in FIG. 5, a concave portion 41a is formed at the lower portion on the right side in the vehicle width direction and the upper left portion on the left side in the vehicle width direction on the front side of the bottom portion 41, and convex portions 41b corresponding to the respective concave portions 41a are formed on the rear side. In the state where the printed circuit board 2 is assembled to the rear cover 4, each instrument component 2a corresponds to each of the recesses 41a.

  A plurality of protrusions 41 c are integrally projected on the rear surface side periphery of the bottom surface portion 41 so as to approach the through holes 43 a. In other words, the protrusion 41c is provided at least in three places including two places on one side in the vehicle width direction and one place on the other side around the central portion of the rear cover 4, and is formed by the protrusions 41c at the three places. It is positioned so as to include the central portion of the rear cover 4 inside the triangle.

  As a specific example, two protrusions 41c are provided at the right end in the vehicle width direction of the bottom surface portion 41 so as to be spaced apart from each other, while one protrusion 41c is provided above the left end in the vehicle width direction of the bottom surface portion 41. The central part of the rear cover 4 is included inside the triangle formed by the three protrusions 41c.

  Further, different specific examples, two protrusions 41c are provided at the lower end of the bottom surface portion 41 in the vehicle width direction, while one protrusion 41c is provided on the right side of the upper end of the bottom surface portion 41 in the vehicle width direction. The central portion of the rear cover 4 is included inside the triangle formed by the three protrusions 41c.

  Further, as shown in FIG. 6, a substantially rectangular pyramid-shaped square tube portion 41d having a through-hole (engaged portion) 41e formed therein protrudes from the bottom surface portion 41 at a substantially central front side in the vehicle width direction. A protrusion 41f is integrally formed on the periphery of the through hole 41e on the back side of the bottom surface portion 41.

  The protrusions 41c and 41f protrude rearward from the protrusions 41b of the rear cover 4, and the tips of the protrusions 41c and 41f are located on substantially the same plane and approach each other at a plurality of locations. The distance between the through hole 43a and the protrusion 41c and the distance between the through hole 41e and the protrusion 41f are substantially the same.

  As shown in FIG. 2, the front cover 3 includes a resin instrument body 5 having a substantially rectangular panel shape extending in the vehicle width direction, a resin dial 6 for displaying scales and characters, the speed meter 1a, A resin visor 7 having window portions 7 a corresponding to the tachometer 1 b and the liquid crystal panel 10, and a transparent resin protective glass 8 covering the entire front side of the visor 7 are provided.

  A substantially rectangular through window 5a into which the mounting member 20 is fitted in the assembled state of the vehicle instrument 1 is formed on the right side of the instrument body 5 in the vehicle width direction.

  Further, as shown in FIG. 3, engaging claws (engaging portions) 5b that engage with the respective through holes 43a of the rear cover 4 are provided on the back side of the instrument body 5 on the back side, as shown in FIG. An engagement claw (engagement portion) 5c projects from a position corresponding to the through hole 41e on the right side of the instrument body 5 in the center of the vehicle width direction.

  As shown in FIG. 2, a substantially rectangular through window 6 a is formed in the right side portion of the dial 6 in the vehicle width direction, and the vehicle instrument 1 is assembled from the through window 6 a to the mounting member 20. The attached liquid crystal panel 10 faces the inside of the vehicle (see FIG. 1).

  The visor 7 is assembled to the front side of the instrument body 5, while the protective glass 8 is assembled to the visor 7, and the dial 6 includes the visor 7, the instrument body 5, and the like. It is sandwiched between and fixed.

  As shown in FIGS. 5 and 6, the front cover 3 is viewed from above in a state where the rear side of the rear cover 4 faces downward and the tips of the protrusions 41c and 41f are in contact with a work table (not shown). By pressing against the rear cover 4, the engaging claws 5 b and 5 c are engaged with the through holes 43 a and 41 e and assembled to the front side of the rear cover 4, thereby completing the vehicle instrument 1. It is supposed to be.

  As described above, according to the embodiment of the present invention, when the rear cover 4 is placed on the work table with the back side of the rear cover 4 facing downward, the plurality of convex portions 41b of the rear cover 4 are not in contact with the work table. Since the projections 41c and 41f serve as a leg of the rear cover 4 and come into contact with the work table, the rear cover 4 is stabilized when placed on the work table. Therefore, it is possible to stably assemble the front cover 3 to the rear cover 4 simply by placing the rear cover 4 on the work table, eliminating the need to manufacture a jig for assembly, and reducing the cost of manufacturing the jig. Jig setup change can be eliminated. Further, since the plurality of protrusions 41c and 41f increase the rigidity around each through-hole 43a of the rear cover 4, even if the through-holes 43a and 41e receive a pressing force from the engaging claws 5b and 5c during assembly, the through-holes 43a and 41e. The periphery is difficult to bend, and the engagement between the through holes 43a and 41e and the engaging claws 5b and 5c can be prevented from being half-hanged, thereby eliminating the assembly failure.

  Further, since the rear cover 4 is placed on the work table by the three or more protrusions 41c formed in the rear cover 4, the rear cover 4 is further stabilized when placed on the work table, and the front cover to the rear cover 4 is placed. Assembly of the cover 3 is further facilitated.

  Further, by increasing the rigidity of the periphery of the through hole 41e provided in the substantially central portion where the panel-like rear cover 4 is most easily bent, it is possible to suppress sinking of the central portion of the rear cover 4 when the front cover 3 is assembled to the rear cover 4. Further, it is possible to prevent the engaging claws 5c and the through holes 41e provided at substantially the center portions of the front cover 3 and the rear cover 4 from being half-hanging each other.

  Furthermore, since the interval between the through hole 43a and the projection 41c approaching each other at a plurality of locations is substantially the same as the interval between the through hole 41e and the projection 41f, each through hole 43a, Since the rigidity around 41e is substantially the same, the balance of the force applied to the front cover 3 is improved when the front cover 3 is assembled to the rear cover 4, so that it is not necessary for the operator to apply useless pressing force during the assembly. Work becomes simple.

  In the embodiment of the present invention, the through holes 43a and 41e as the engaged portions are formed in the rear cover 4 and the engaging claws 5b and 5c as the engaging portions are formed in the front cover 3. An engaging claw as an engaging portion may be formed, and a through hole as an engaged portion may be formed in the front cover 3 to be engaged with each other.

  In the embodiment of the present invention, the front cover 3 is assembled to the rear cover 4 after the front cover 3 is assembled. However, the present invention is not limited to this, and after the instrument body 5 is assembled to the rear cover 4, The board 6, the visor 7 and the protective glass 8 may be assembled into the vehicle instrument 1.

  The present invention is suitable for a vehicle instrument that displays various states of the vehicle.

DESCRIPTION OF SYMBOLS 1 Vehicle instrument 2 Printed circuit board 3 Front cover 4 Rear cover 5b, 5c Engagement claw (engagement part)
41a Concave part 41b Convex part 41c, 41f Protrusion 43 Outer peripheral edge part 43a, 41e Through-hole (engaged part)

Claims (4)

A plurality of engaging portions that engage with each other and a portion to be engaged are provided at a distance from the outer peripheral edge portion, and a plurality of concave portions are formed on the front side, and a plurality of convex portions corresponding to the respective concave portions. A panel-shaped rear cover formed on the back side,
A plurality of instrument parts are attached corresponding to the respective recesses of the rear cover, and a printed circuit board assembled on the front side of the rear cover;
By pressing the rear cover against the rear cover from above with the other of the engaging part and the engaged part spaced apart from the outer peripheral edge part and with the back side of the rear cover facing downward A vehicle instrument provided with a front cover that covers the front side of the printed circuit board and is assembled to the front side of the rear cover by engaging the engagement parts with the engaged parts.
On the back side of the rear cover, a plurality of protrusions approach each one of the engaging portion and the engaged portion, and protrude further to the back side than the convex portions of the rear cover. A vehicular instrument characterized in that it is integrally projected and the tips of the projections are located on substantially the same plane. The vehicle instrument according to claim 1, wherein
The protrusions are provided at least at a total of three locations including two locations on one side and one location on the other side centering on the central portion of the rear cover, and the projections of the rear cover are formed inward of the triangle formed by the three projections. A vehicle instrument characterized by being positioned so as to include a central portion. The vehicle instrument according to claim 1 or 2,
The rear cover is provided with either one of the engaging portion and the engaged portion that engage with each other and the protrusion at a substantially center in the vehicle width direction,
In the front cover, the other of the engaging portion and the engaged portion is located at a position corresponding to one of the engaging portion and the engaged portion provided substantially at the center in the vehicle width direction of the rear cover. A vehicle instrument characterized by being provided. In the vehicle meter according to any one of claims 1 to 3,
The vehicular instrument characterized in that the distance between one of the engaging part and the engaged part that approach each other at a plurality of locations and the protrusion is substantially the same.

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