JP6796252B2 - Vehicle instruments - Google Patents

Description

The present invention relates to a vehicle instrument mounted on a vehicle such as a motorcycle, for example.

Conventionally, as a vehicle instrument of this type, for example, those described in Patent Document 1 below are known. The vehicle instrument described in Patent Document 1 is a liquid crystal display panel (information display body) for displaying vehicle information in a vacant space formed between a first case and a second case, or a liquid crystal display panel. A circuit board or the like on which a control unit consisting of a microcomputer that controls display is mounted is housed.

In this case, the first case is configured as a resin upper case including a base portion covering the display area of the liquid crystal display panel and a first side wall portion located on the side side of the liquid crystal display panel. The second case, which is provided so as to be paired with the case of the case, is first from the bottom wall portion so as to overlap the bottom wall portion covering the back side of the liquid crystal display panel and the first side wall portion of the first case. It is configured as a resin lower case provided with a second side wall portion extending toward the base side of the case.

The first side wall portion of the first case is a side portion extending rearward from the peripheral edge portion of the base portion and a first protective portion provided so as to project outward from the lower end side of this side portion. And a second protective portion extending rearward from the outer edge of the first protective portion, and the second side wall portion of the second case is the height of the second side wall portion. It has a covering portion (first covering portion) located behind the first protective portion while projecting outward from a substantially central region in the direction.

Jikkenhei 2-128324

By the way, in the case of the vehicle instrument described in Patent Document 1 described above, the first protective portion provided on the first case side comes into contact with the first covering portion provided on the second case side. The first covering is located behind the protection, but for example, due to dimensional tolerances during molding of the first case and the second case, between the first protection and the first covering. May cause a minute clearance.

In such a case, for example, the vehicle instrument is mounted in the center of the steering wheel of the motorcycle running on the track (that is, the steering wheel so that the display surface of the liquid crystal display panel faces the passenger side on the motorcycle). Under the condition (the vehicle instrument is mounted in the center), the dust floating in the atmosphere tends to flow from the second case side to the liquid crystal display panel side, and the vehicle is located farthest from the passenger side. It is conceivable that dust is likely to adhere to the back side of the second case of the instrument. Then, the dust adhering to the back side of the second case passes through the above-mentioned minute clearance and invades the internal space (that is, the vacant space) of the vehicle instrument in which the liquid crystal display panel or the like is housed to prevent dust. There is a risk of deterioration of sex.
Therefore, an object of the present invention is to provide a vehicle instrument capable of improving dustproofness in order to deal with the above-mentioned problems.

In the present invention, an information display body for displaying vehicle information is housed between the first case and the second case, and the first case includes a base portion covering a display area of the information display body and the information. The second side wall portion includes a first side wall portion located on the side side of the display body, and the second case includes a second side wall portion provided corresponding to the first side wall portion, and the first side wall portion is provided. The portions are a side portion extending rearward from the peripheral edge portion of the base portion, a first protective portion projecting outward from the lower end side of the side portion, and a rear portion from the outer edge of the first protective portion. and a second protective part extending toward the second side wall, behind the first protection portion with projecting outwardly from a predetermined portion of said second side wall portion A first covering portion located, a second covering portion extending rearward from the outer edge of the first covering portion and located inside the second protective portion, and the second coating portion. It has an overhanging portion that projects outward from the lower end side of the portion, and the facing surface of the overhanging portion that faces the lower end surface of the second protective portion increases as the distance from the second covering portion increases. The surface is inclined so that the distance from the lower end surface gradually increases .

According to the present invention, it is possible to provide a vehicle instrument capable of achieving a desired object and improving dust resistance.

The front view of the vehicle instrument according to the embodiment of this invention. A cross-sectional view taken along the line AA of FIG. An enlarged sectional view of a main part showing a part of a first case and a part of a second case according to the same embodiment in an enlarged manner.

Hereinafter, a case where the embodiment of the present invention is applied to a vehicle instrument for a motorcycle mounted in the center of the steering wheel of the motorcycle will be described with reference to FIGS. 1 to 3.

In FIGS. 1 and 2, the vehicle instrument D includes an information display body 10 composed of a liquid crystal display panel for displaying various vehicle information, a circuit board 20 located behind the information display body 10, and an information display body. It is mainly composed of a resin case 30 mounted on the circuit board 20 so as to hold the 10 and a resin housing 40 constituting the outer case of the vehicle instrument D.

For example, a rectangular TFT type liquid crystal display panel can be applied to the information display body 10. In the display area B of the information display body 10, for example, a display unit 11 composed of vehicle speed information, mileage information, and the like is displayed as visual information. Further, the information display body 10 is electrically connected to the circuit board 20 by using a flexible wiring board (not shown). The information display body 10 is mounted so that the display surface on which the display unit 11 is displayed faces the passenger side of the motorcycle.

The circuit board 20 is made of, for example, a hard wiring board in which a wiring pattern (not shown) is applied to a glass epoxy base material. A component (not shown) is electrically connected to the wiring pattern.

The resin case 30 is formed of, for example, a white synthetic resin material, is arranged between the information display body 10 and the circuit board 20, and has a function as a holding portion for holding the information display body 10.

The resin housing 40 has a first case 50 as an upper case in which the main portion thereof is located on the front surface side of the information display body 10, and a second case as a lower case in which the main portion covers the back side of the circuit board 20. The information display body 10, the circuit board 20, and the resin case 30 are housed in a hollow portion (vacant space) S formed between the first case 50 and the second case 60. Further, the first case 50 is fixed to the second case 60 by using an appropriate fixing means such as hook fixing.

The first case 50 is made of an injection-molded body made of synthetic resin, and has a base portion 51 as a front wall portion covering the display area B of the information display body 10 and a first side wall located on the side side of the information display body 10. It is provided with a unit 52.

The base 51 has a configuration in which a transparent visible portion 51a provided corresponding to the display area B of the information display body 10 and an invisible portion 51b surrounding the visible portion 51a are integrally provided. For example, the invisible portion 51b is made of black resin so that the circuit board 20 and the like cannot be visually recognized from the viewer side who visually recognizes the vehicle instrument D.

Further, the first side wall portion 52 is formed of a black resin like the invisible portion 51b, and as shown in FIG. 3, extends substantially straight from the peripheral portion of the invisible portion 51b (base 51) toward the back. A first protective portion 52b composed of a side portion 52a (formed by hanging), an overhanging portion provided so as to project outward from the lower end side of the side portion 52a, and an outer end of the first protective portion 52b. It has a second protective portion 52c that extends substantially straight from the edge to the back (forms to hang down). In this case, the first and second protective portions 52b and 52c have a function as a protective wall for covering (protecting) the first and second covering portions described later provided in the second case 60.

On the other hand, the second case 60 is made of an injection molded product made of a synthetic resin, and is provided so as to form a pair with the first case 50. The second case 60 includes a bottom wall portion 61 that covers the back side of the circuit board 20 (information display body 10), and a second side wall portion 62 that is provided corresponding to the first side wall portion 52. Here, as shown in FIG. 2, the second side wall portion 62 and the first side wall portion 52 are positioned so as to overlap each other when viewed from the plate surface direction (arrow C direction in FIG. 1) of the circuit board 20. It is a relationship.

The bottom wall portion 61 is formed in a substantially flat plate shape so as to be parallel to the circuit board 20.

The second peripheral wall portion 62 has a wall portion 62a having a vertical wall shape extending substantially straight from the bottom wall portion 61 toward the base 51 side so as to overlap the first side wall portion 52, and a wall portion 62a (second). (For example, the second peripheral wall portion 62 facing the second protective portion 52c located on the first protective portion 52b side) projecting outward from the peripheral wall portion 62) and the first protective portion 52b A first covering portion 62b consisting of an overhanging portion located behind the first covering portion 62b, and a second covering portion 62b extending almost straight toward the back from the outer edge of the first covering portion 62b (forming a droop). It has a second covering portion 62c located inside the protective portion 52c, and an overhanging portion 62d formed of a flange portion provided so as to project outward from the lower end side of the second covering portion 62c. (See Fig. 3).

The wall portion 62a has an upper side wall portion 62e extending (protruding) above the first covering portion 62b so that a first gap portion X1 is formed between the wall portion 62a and the side portion 52a, and an upper side wall portion 62e. It has a lower side wall portion 62f that connects the portion 62e and the bottom wall portion 61.

The first and second covering portions 62b and 62c are in a state of being covered (covered) by the first and second protective portions 52b and 52c. The lower surface of the second covering portion 62c protrudes slightly behind the lower end surface of the second protective portion 52c, which will be described later.

The overhanging portion 62d is arranged to face the second protective portion 52c so as to have a second gap portion X2 having a predetermined clearance. Further, the overhanging portion 62d descends as the facing surface (upper surface portion) P2 facing the lower end surface P1 of the second protective portion 52c goes from the inside (resin case 30) to the outside (second protective portion 52c). The slope is like a slope. That is, this means that the facing surface P2 of the overhanging portion 62d facing the lower end surface P1 of the second protective portion 52c gradually increases in distance from the lower end surface P1 as the distance from the second covering portion 62c increases. It means that it is an inclined surface.

Here, focusing on the shape of the first side wall portion 52 and the shape of the second side wall portion 62 portion excluding the overhanging portion 62d and the lower side wall portion 62f, the side portion 52a, the first protective portion 52b, and the first The shape of the first side wall portion 52 including the protection portion 52c of 2 is a stepped shape, and the second side wall portion 62 including the upper side wall portion 62e, the first covering portion 62b, and the second covering portion 62c. The shape of the portion is a stepped shape that almost exactly overlaps the inside of the first side wall portion 52. Further, the overhanging portion 62d is configured to project to the outside of the second covering portion 62c so as to cover the lower end surface of the second protective portion 52c from the back side.

Here, tentatively, due to the dimensional tolerances of the first and second cases 50 and 60 at the time of molding, as shown in FIG. 3, a minute first protection portion 52b and a first covering portion 62b are formed. Assuming that a clearance Y1 is generated and a minute second clearance Y2 communicating with the first clearance Y1 is generated between the second protection portion 52c and the second covering portion 62c, the first clearance Y1 and the second are assumed. The dust intrusion route composed of the clearance Y2 does not have a linear clearance, but has a bent maze-like curved clearance.

Then, while the two-wheeled vehicle is traveling, dust floating in the atmosphere tends to flow from the second case 60 side to the information display body 10 side, and is for a vehicle located farthest from the passenger side. It is conceivable that dust easily adheres to the back side of the second case 60 (bottom wall portion 61) of the instrument D, but in this example, the back side of the second protective portion 52c is covered with the overhanging portion 62d. Moreover, as described above, the dust intrusion route has a maze-like bending clearance.

Therefore, if dust invades the second gap X2 (the gap between the second protective portion 52c and the overhanging portion 62d), the dust that has invaded the second gap X2 will invade the bent dust. Dust on the first gap X1 side (gap between the side portion 52a and the upper side wall portion 62e) because it tends to stay inside the path (second clearance Y2 or first clearance Y1) (because it tends to stagnate). Is blocked as much as possible. As a result, there is no possibility that dust will enter the cavity S in which the information display body 10 or the like is housed, and the dustproof property can be improved.

As described above, in the present embodiment, the second peripheral wall portion 62 of the second case 60 is the first covering portion 62b located behind the first protective portion 52b and the first covering portion 62b. A second covering portion 62c located inside the second protection portion 52c and a tension extending outward from the lower end side of the second covering portion 62c while extending backward from the outer edge. By having the protruding portion 62d, the dust that has entered the second gap portion X2 (the gap between the second protective portion 52c and the overhanging portion 62d) is a maze-shaped bending clearance of the first and first. 2 It is possible to provide a vehicle instrument D capable of easily staying inside the clearances Y1 and Y2, and as a result, the intrusion of dust into the cavity S is suppressed as much as possible and the dustproof property can be improved.

Further, in the present embodiment, the distance between the lower end surface P1 of the second protective portion 52c and the lower end surface P1 of the overhanging portion 62d facing the lower end surface P1 gradually increases as the distance from the second covering portion 62c increases. (Downhill) It is a slope.

With this configuration, for example, even when water flows between the lower end surface P1 of the second protective portion 52c and the facing surface P2 of the overhanging portion 62d (that is, the second gap portion X2). Since the amount of water flowing into the upper side of the (downhill) inclined surface (that is, the side of the second covering portion 62c) is as small as possible, the invasion of water into the first and second clearances Y1 and Y2 due to the capillary phenomenon. It can be prevented and the waterproofness can be improved.

The present invention is not limited to the above-described embodiments and drawings. Changes (including deletion of components) can be made to the embodiments and drawings as appropriate without changing the gist of the present invention.

For example, in the above-described embodiment, an example in which the information display body 10 is composed of an instrument display such as a liquid crystal display panel has been described. For example, the information display body 10 is designated by a pointer (instrument pointer) and a scale indicated by the pointer. It may be an analog type instrument mainly composed of a display board (instrument display board) having a display unit such as the above. In the case of an analog instrument, the pointer is connected to the rotating shaft of the motor (pointer driving means) mounted on the circuit board 20 so as to drive the pointer.

10 Information display body 40 Resin housing 50 First case 51 Base 52 First side wall 52a Side 52b First protection 52c Second protection 60 Second case 61 Bottom wall 62 Second side wall Part 62a Wall part 62b First covering part 62c Second covering part 62d Overhanging part 62e Upper side wall part 62f Lower side wall part P1 Lower side surface of second protective part P2 Facing surface S Cavity part X1 First gap part X2 2nd gap Y1 1st clearance Y2 2nd clearance

Claims (1)

An information display body that displays vehicle information is housed between the first case and the second case.
The first case includes a base portion that covers the display area of the information display body, and a first side wall portion that is located on the side side of the information display body.
The second case includes a second side wall provided corresponding to the first side wall.
The first side wall portion is
A side portion extending backward from the peripheral portion of the base portion,
A first protective portion that projects outward from the lower end side of the side portion,
It has a second protective portion extending rearward from the outer edge of the first protective portion.
Said second side wall,
A first cover portion located behind the first protection portion with projecting outwardly from a predetermined portion of said second side wall portion,
A second covering portion extending rearward from the outer edge of the first covering portion and located inside the second protective portion, and a second covering portion.
It has an overhanging portion that projects outward from the lower end side of the second covering portion .
The facing surface of the overhanging portion facing the lower end surface of the second protective portion is an inclined surface such that the distance from the lower end surface gradually increases as the distance from the second covering portion increases. A characteristic vehicle instrument.

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