JP2023033766A - vehicle instrument - Google Patents

Abstract

To provide a vehicle instrument with good assembling workability.SOLUTION: The vehicle instrument is provided with a liquid crystal display panel 1, a housing 4 for accommodating the liquid crystal display panel 1, and a lid 5 for covering an opening 421 provided in the housing 4. The housing 4 is provided with a cover 41 having a transparent portion through which a display output of the liquid crystal display panel 1 can be seen, and a case 42 fitted with the cover 41 so as to form a storage space 4a for the liquid crystal display panel 1. The lid 5 is provided with a base portion 51 closing an opening 421, a stopper portion 52 held by a holding portion 42b formed outside the storage space 4a in the case 42 to prevent it from coming off, and a connecting portion 53 connecting the base portion 51 and the stopper portion 52.SELECTED DRAWING: Figure 3

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle meter, and is suitable as a meter that can be connected by wiring to an external device, for example.

Vehicle gauges are generally housed in a housing, and particularly gauges that are exposed to the outside atmosphere such as wind and rain have a structure that considers waterproofing and dustproofing, as described in Patent Document 1, for example. .

On the other hand, the casing of the instrument for vehicle has an opening for electrical connection with an internal circuit board for adjustment work and connection with external equipment while each part is held inside. may be provided with a lid that removably closes the

JP 2011-232251 A

Furthermore, if the lid is required to have a function to prevent it from falling off from the housing due to detachment work or vehicle vibration, not only will the lid and the holding structure for holding this lid become complicated, There was a problem that the work of assembling it to the body was complicated.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to address the above-described problems, and to provide a vehicle instrument with improved workability for assembling a lid.

The vehicle instrument of the present invention is
a display;
a housing for storing the display;
a lid that covers and closes the opening provided in the housing;
with
The housing includes a cover having a transparent portion through which a display output by the display device can be seen;
a case that forms a storage space for the indicator by fitting with the cover,
The lid includes a base portion that closes the opening, a stopper portion that is retained by a holding portion that is formed outside the storage space in the case, and a connection portion that connects the base portion and the stopper portion, set up.

Further, the holding portion is formed in a mounting portion that faces the cover and is for mounting the housing to the vehicle body.

Further, the mounting portion has a cylindrical holding portion provided with a hole larger than the outer diameter of the stopper portion at one end,
A slit narrower than the outer diameter of the stopper portion and through which the connecting portion passes is formed in the holding portion.

Further, the cover has a restricting portion that restricts the movement of the stopper portion so that it does not come off from the retaining portion by closing at least a part of the hole of the retaining portion.

Further, a circuit board for mounting an electronic component for driving and controlling the display device and a connector for external connection, which is housed in the housing,
The opening allows the connector to be viewed when the lid is removed.

The vehicle instrument of the present invention can improve the workability of assembling the lid.

The figure which shows the vehicle instrument mounted in the vehicle in embodiment. The figure which shows the front of a vehicle instrument. The figure which shows the cross section along the III-III line of FIG. The figure which shows mounting part vicinity on the side surface side of the vehicle instrument. FIG. 5 is a view showing a state in which a lid is removed from the vehicle instrument of FIG. 4; FIG. 4 is a cross-sectional view showing a state in which the lid is held by the holding portion of the case; The figure which shows the holding|maintenance part of a case.

As an embodiment to which the present invention is applied, a vehicle instrument A mounted on a motorcycle will be described as an example based on the drawings.

As shown in FIG. 1, the vehicle instrument A is provided on the front side of the vehicle body of the handlebar B so as to face the driver in the riding state. In this case, the vehicular instrument A is configured such that most of the area other than the display area is covered within the instrument panel C. As shown in FIG.

As shown in FIGS. 2 and 3, the vehicle instrument A includes a liquid crystal display panel (display unit) 1, an indicator (display) 2, a circuit board 3, a housing 4, and a lid 5. .

The liquid crystal display panel 1 can generate a display image using a liquid crystal display element and display and output vehicle information in the form of numerical values, bars, symbol marks, and the like. The liquid crystal display panel 1 can switch between screens to display a plurality of vehicle information. For example, it is conceivable to display not only the vehicle speed but also the total distance traveled and the fuel consumption rate. . Further, the liquid crystal display panel 1 is provided so as to be visually recognizable by being transmissively illuminated by a backlight.

In this case, the liquid crystal display panel 1 includes two transparent glass substrates (transparent plates) on which transparent electrodes are printed, liquid crystal sealed so as to be sandwiched between these transparent glass substrates, and each transparent glass substrate. A liquid crystal display element 11 provided with a polarizing plate arranged outside and a backlight section 12 for transmissively illuminating the liquid crystal display element 11 can be applied.

The liquid crystal display element 11 can form a desired display image (image) by applying electricity to the transparent electrodes through an FPC (flexible printed circuit board) (not shown) to cause the liquid crystal to act. The liquid crystal display element 11 is formed by continuously forming transparent wires extending from transparent electrodes between transparent glass substrates to the outside. is implemented.

Although not shown in detail, the backlight unit 12 uses LEDs (light emitting diodes) as a light source to illuminate the liquid crystal display element 11 through transmission. A structure is provided for uniformly illuminating the display area of the panel 1 . It is also possible to apply a self-luminous organic EL panel instead of the liquid crystal display panel 1 provided with the backlight section 12 .

A plurality of indicators 2 are provided next to the liquid crystal display panel, and are indicator lamps for indicating cautions, warnings, and operating states of vehicle devices. and a partition wall 23 for shielding the light from the light source 22 from leaking to the liquid crystal display panel 1 or another indicator 2 side.

The transmissive printing part 21 has a predetermined symbol mark printed on the inner surface of the transmissive part of the housing 4, which will be described later, to indicate warnings and cautions. A mark indicating the operating state of the device is formed so as to be able to be transmitted through illumination.

The light source 22 is a light-emitting diode mounted on the circuit board 3 at a location facing the transmissive printed portion 21 . The display/non-display of the indicator 2 can be switched depending on the ON/OFF state of the light source 22 .

The circuit board 3 includes, for example, a conductive pattern made of copper foil formed on the front and back surfaces of an electrically insulating base material using glass epoxy resin, and a hard printed wiring provided with an insulating coating for protecting the surface other than the mounting surface of electronic components. is the substrate. The circuit board 3 generates and outputs drive signals for driving not only the light source 22 but also the liquid crystal display panel 1 based on power and various signals supplied by connection with an electronic control unit on the vehicle side. Electronic components (arithmetic circuit elements 31 such as microcomputers) and wiring by copper foil patterns are provided. Also, on the back side of the circuit board 3 (the side opposite to the display output side), for example, a connector 32 that can be selectively connected to a signal line for inputting a video signal from a navigation system device is mounted.

The housing 4 includes a cover 41 having a transmission portion 41a through which the display output of the liquid crystal display panel 1 can be seen through, and a storage space 4a that accommodates the liquid crystal display panel 1, the circuit board 3, etc. by fitting the cover 41 together. A case 42 is provided.

Transparent plate material such as inorganic glass or acrylic resin can be applied to the transparent portion 41 a of the cover 41 , which protects the inside of the housing 4 while allowing the image displayed by the liquid crystal display panel 1 to be seen through. In this case, a frame portion 41b made of a light-shielding synthetic resin material including a shape in which the transmission portion 41a using inorganic glass is fitted with the case 42 is provided by insert molding. The transmissive part and the frame part may be integrally molded using a transparent acrylic resin material, or the transparent plate-like transmissive part may be insert-molded with a transparent frame part made of a different material. can also

The cover 41 is arranged to cover the liquid crystal display panel 1, and a black light shielding layer (light shielding portion) 41c is formed in a frame shape by painting so as to hide the portion of the liquid crystal display panel 1 other than the display area. At the boundary between the light shielding layer 41c and the display area inside it, a gradation with different dot shapes and color tones can be formed to make the boundary inconspicuous. Further, the transmissive printed portion 21 of the indicator 2 can be provided by using the same material and process as those of the light shielding layer 41c.

The inner surface of the cover 41 is provided with a transparent adhesive member 6 for holding the liquid crystal display panel 1 and a light-shielding sponge-like cushioning member 7 for preventing exposure from the gap between the indicator 2 and the cover 41 . . For the adhesive member 6, for example, a moisture-curing or ultraviolet-curing adhesive or an adhesive sheet having adhesive layers on both sides can be applied. is preferable, and it is possible to reduce boundary surface reflection and improve visibility.

A light-shielding synthetic resin material can be applied to the case 42, and the circuit board 3 and the partition wall 23 are fixedly supported by screws (not shown). As shown in FIGS. 3 and 4, the side surface of the case 42 has an opening 421 at a position facing the connector 32 and is covered with the lid 5 .

In the case 42, a fixing hole 42a for fixing the vehicle instrument A to a vehicle body bracket (not shown) extending continuously from the vicinity of the abutting portion (mating portion) with the cover 41 is formed. It has a flange-shaped mounting portion 422 with a flattened shape. Further, a cylindrical holding portion 42b that opens the cover 41 side is provided in the mounting portion 422 of the case 42 and holds one end of the lid 5. As shown in FIG. Note that the cover 41 is formed so as to extend so as to cover the mounting portion 422 also from the vicinity of the contact portion with the case 42 . The vehicle instrument A is fixed to the vehicle body bracket at the mounting portion 422 by screws or bolts inserted through the fixing holes 42a.

The lid 5 is made of elastically deformable synthetic rubber, and is held by a base portion 51 that covers the opening 421 of the case 42 and a holding portion 42b that is formed outside the storage space 4a in the case 42 and is held by a stopper. A portion 52 and a connection portion 53 that connects the base portion 51 and the stopper portion 52 are provided.

The base portion 51 is detachably provided with respect to the opening 421, and as shown in FIGS. The protruding portion 51b prevents the opening 421 from easily coming off due to vehicle vibration or the like. When the base portion 51 is removed from the opening 421 (the state shown in FIG. 5), the connector 32 of the circuit board 3 can be seen through the opening 421, and wiring can be connected through the opening 421. Become. Note that this wiring connection requires a separate waterproof structure.

As shown in FIG. 6 , the stopper portion 52 has an outer diameter larger than the thickness of the connecting portion 53 at one end of the string-like connecting portion 53 . As shown in FIGS. 6 and 7, a holding portion 42b for holding the stopper portion 52 has an opening (hole) 42c that opens the cover 41 side (surface side) to a size that allows the stopper portion 52 to be inserted therethrough. A slit 42d having a gap larger than the outer diameter of the connecting portion 53 and smaller than the outer diameter of the stopper portion 52 is formed continuously from the open portion 42c.

As a result, the lid 5 is retained in a state other than the opening 42c by passing the stopper 52 through the opening 42c and the connecting portion 53 through the slit 42d. Furthermore, when the cover 41 is assembled in this state, the stopper portion 52 cannot be removed from the holding portion 42b because it has the restricting portion 41d that covers and closes the opening portion 42c. Therefore, it is possible to prevent the lid 5 from falling off from the vehicle meter A. When the restricting portion 41d is transparent, it has the effect of allowing the assembled state of the stopper portion 52 to be checked through the restricting portion 41d. In addition, the connecting portion 53 is connected to the side surface of the base portion 51 (the outer surface in the direction perpendicular to the attachment/detachment direction). Even when a restoring stress is applied, the base portion 51 has a function of being difficult to come off.

Such a vehicle instrument A includes a liquid crystal display panel 1, a housing 4 for housing the liquid crystal display panel 1, and a lid 5 for covering an opening 421 provided in the housing 4. is provided with a cover 41 having a transmissive portion through which the display output of the liquid crystal display panel 1 can be seen through, and a case 42 forming a storage space 4a for the liquid crystal display panel 1 by fitting the cover 41, and a lid 5 is a base portion 51 that closes the opening 421, a stopper portion 52 that is retained by a holding portion 42b formed outside the storage space 4a in the case 42, and a connecting portion 53 that connects the base portion 51 and the stopper portion 52. and set. Further, the holding portion 42b is formed in a mounting portion 422 that faces the cover 41 and is used to mount the housing 4 to the vehicle body.

Therefore, since the structure for assembling and holding the lid 5 is provided outside the storage space 4a, the assembling can be performed while visually checking, and the vehicular instrument can be improved in workability.

The mounting portion 422 has a cylindrical holding portion 42b provided at one end with an open portion 42c larger than the outer diameter of the stopper portion 52. The holding portion 42b has a connection portion 53 narrower than the outer diameter of the stopper portion 52. Since the slit 42d through which the lid 5 passes is formed, it is not necessary to assemble the lid 5 while elastically deforming it excessively, which facilitates the assembling work.

Further, the cover 41 is provided with a restricting portion 41d that restricts the movement of the stopper portion 52 so that it does not come off from the retaining portion 42b by covering at least a part of the open portion 42c of the retaining portion 42b. This is effective because there is no need for parts or processes for retaining (for preventing the lid 5 from coming off).

The housing 4 also includes a circuit board 3 on which electronic components for driving and controlling the liquid crystal display panel 1 and a connector 32 for external connection are mounted. The connector 32 can be seen from the outside of A. Therefore, even when the vehicle instrument A is mounted on the vehicle, the connector connection work (wiring work) is facilitated.

Although the vehicle instrument according to the present invention has been described with the configuration of the above-described embodiment as an example, the present invention is not limited to this, and other configurations may also deviate from the gist of the present invention. It goes without saying that various improvements and design changes are possible within the scope of the invention.

INDUSTRIAL APPLICABILITY The present invention can be applied, for example, as a vehicular instrument mounted on a moving object such as an automobile, a motorcycle, or an agricultural machine or a construction machine.

1 Liquid crystal display panel (display)
11 liquid crystal display element 12 backlight unit 2 indicator (display)
21 transparent printing part 22 light source 23 partition wall 3 circuit board 31 arithmetic circuit element 32 connector 4 housing 41 cover 41a transparent part 41b frame part 41c light shielding layer 41d regulation part 42 case 421 opening 421a wall part 422 mounting part 42a fixing hole 42b Holding portion 42c Open portion (hole)
42d Slit 4a Storage space 5 Lid 51 Base 51a Groove 51b Projection 52 Stopper 53 Connection 6 Adhesive member 7 Cushioning member A Vehicle instrument B Handlebar C Instrument panel

Claims (5)

a display;
a housing for storing the display;
a lid that covers and closes the opening provided in the housing;
with
The housing includes a cover having a transparent portion through which a display output by the display device can be seen;
a case that forms a storage space for the indicator by fitting with the cover,
The lid includes a base portion that closes the opening, a stopper portion that is retained by a holding portion that is formed outside the storage space in the case, and a connection portion that connects the base portion and the stopper portion, A vehicle instrument that provides a
2. The vehicle instrument according to claim 1, wherein the holding portion faces the cover and is formed in a mounting portion for mounting the housing to the vehicle body.
The mounting portion has a cylindrical holding portion provided with a hole larger than the outer diameter of the stopper portion at one end,
3. The vehicle instrument according to claim 2, wherein the holding portion is formed with a slit narrower than the outer diameter of the stopper portion and through which the connecting portion passes.
4. The vehicle instrument according to claim 3, wherein the cover includes a restricting portion that restricts movement of the stopper portion so as to prevent the stopper portion from coming off the retaining portion by closing at least a portion of the hole of the retaining portion.
A circuit board that is housed in the housing and mounts an electronic component that drives and controls the display and a connector for external connection,
2. The vehicle instrument of claim 1, wherein the opening allows the connector to be seen when the lid is removed.

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