JP2020170789A - On-vehicle electronic apparatus - Google Patents

Abstract

To provide an on-vehicle electronic apparatus in which a decrease in strength in attaching serval types of second housings with different mounting positions to a first housing can be suppressed.SOLUTION: A first housing 10 is provided with through holes 14a, 14b, 14c, 14d, 14e, 14f for screw fastening and projections 16a, 16b for positioning. An upper cover 30 is provided with a bent portion 37 having fitting holes 38a, 38b. A front cover 23 included in a second housing 20 is provided with: screw holes 24a, 24b, 24c, 24d, 24e, 24f corresponding to the through holes 14a, 14b, 14c, 14d, 14e, 14f, respectively; recesses 26a, 26b engaging to the projections 16a, 16b for positioning, respectively; and elastic fitting claws 27a, 27b to which the bent portion 37 fits.SELECTED DRAWING: Figure 5

Description

The present invention relates to an in-vehicle electronic device.

When screwing several types of monitor units with different mounting positions to the housing, a mounting member provided with multiple sets of screw holes was used to absorb the difference in position for each type of monitor unit. (See, for example, Patent Document 1). The mounting member is mounted on the housing, and the monitor unit is screwed into one set of screw holes among the plurality of sets of screw holes provided in the mounting member.

Japanese Unexamined Patent Publication No. 2002-175023

Since the conventional mounting member is provided with a plurality of sets of screw holes, there is a problem that the strength is lowered.

The present invention has been made to solve the above problems, and an object of the present invention is to suppress a decrease in strength when several types of second housings having different mounting positions are mounted on the first housing.

The vehicle-mounted electronic device according to the present invention is screw-fastened to a first housing having a front opening end that opens to the front and an upper opening end that opens to the top, and a front opening end of the first housing. A second housing having a front cover, an upper cover attached to the upper opening end of the first housing, a through hole for screw fastening provided at the front opening end, and a through hole in the front cover. A screw hole for fastening a screw provided at a corresponding position, a positioning convex portion protruding from the front side of the upper opening end to the front cover side, and a positioning convex portion provided at a position corresponding to the positioning convex portion on the front cover. Fitting that fits the squeezed portion, the positioning recess provided in the squeezed portion and engages with the positioning convex portion to position the first housing and the front cover, and the front cover and the upper cover. It is equipped with a joint part.

According to the present invention, by preparing the front cover for each of the second housings having different mounting positions, a large number of screw holes for each of the second housings having different mounting positions are provided for one front cover. It is possible to suppress a decrease in the strength of the front cover.

It is a front side perspective view which shows the structural example of the vehicle-mounted electronic device which concerns on Embodiment 1. FIG. It is a rear side perspective view which shows the structural example of the vehicle-mounted electronic device which concerns on Embodiment 1. FIG. It is a rear view which shows the structural example of the in-vehicle electronic device which concerns on Embodiment 1. FIG. 4A and 4B are side views showing an in-vehicle electronic device in which two types of second housings having different mounting positions are mounted. 5A and 5B are rear views showing a configuration example of a front cover of two types of second housings having different mounting positions. It is a top view which shows the structural example of the upper housing part in Embodiment 1. FIG. It is a back side perspective view which shows the structural example of the upper housing part in Embodiment 1. FIG. It is a front side perspective view which shows the structural example of the upper cover in Embodiment 1. FIG. It is a top view which shows the structural example of the in-vehicle electronic device which concerns on Embodiment 1. FIG. 9 is a cross-sectional view taken along the line AA of FIG. 9 is a cross-sectional view taken along the line BB of FIG.

Embodiment 1.
FIG. 1 is a front perspective view showing a configuration example of the in-vehicle electronic device 1 according to the first embodiment. FIG. 2 is a rear perspective view showing a configuration example of the in-vehicle electronic device 1 according to the first embodiment. FIG. 3 is a rear view showing a configuration example of the in-vehicle electronic device 1 according to the first embodiment. The in-vehicle electronic device 1 includes a first housing 10, a second housing 20, and an upper cover 30, and the first housing 10, the second housing 20, and the upper cover 30 are integrally configured. The in-vehicle electronic device 1 is, for example, a car navigation device, and a box body portion composed of a first housing 10 and an upper cover 30 is fitted into an installation space formed in a dash boat of a vehicle. The monitor 21 of the second housing 20 faces the passenger compartment side in a state where the box body portion is fitted in the installation space.

The second housing 20 includes a monitor 21, a frame-shaped panel 22, and a front cover 23. The frame-shaped panel 22, which is a resin member or the like, holds the monitor 21 so as to surround the monitor 21 vertically and horizontally. A front cover 23, which is a sheet metal member, is attached to the rear portion of the frame-shaped panel 22 by screwing or the like. The front portion of the frame-shaped panel 22 is open, and the screen of the monitor 21 is exposed.

The first housing 10 includes an upper housing portion 11, a lower housing portion 12, and a back cover 13. In the illustrated example, the first housing 10 is configured such that the upper housing portion 11 and the lower housing portion 12 are vertically stacked. The upper housing portion 11, the lower housing portion 12, the back cover 13, and the upper cover 30 are sheet metal members.
The first housing 10 may be composed of a plurality of housing portions as shown in the illustrated example, or may be composed of one housing portion.

The upper housing portion 11 has two opposing side surfaces and one bottom surface connecting the two side surfaces. Similarly, the lower housing portion 12 has two opposing side surfaces and one bottom surface connecting the two side surfaces. The upper part of the upper housing portion 11 is open, and the upper cover 30 is attached to the upper opening end 11a (see FIGS. 6 and 7 described later) by screwing or the like. The upper part of the lower housing portion 12 is open, and the bottom surface of the upper housing portion 11 is attached to the upper opening end by screwing or the like. The rear portion of the upper housing portion 11 and the lower housing portion 12 is open, and the back cover 13 is attached to the rear opening end by screwing or the like. The front portions of the upper housing portion 11 and the lower housing portion 12 are open, and the front cover 23 of the second housing 20 is attached to the front opening end 11b (see FIGS. 6 and 7 described later). It is attached by screwing.

When assembling the in-vehicle electronic device 1, the upper housing portion 11 and the lower housing portion 12 are first attached, and then the back cover 13 is attached to form the first housing 10. The front cover 23 of the second housing 20 is attached to the front opening end 11b of the first housing 10. After that, the upper cover 30 is attached to the upper opening end 11a of the first housing 10 from above the first housing 10.

Hereinafter, a configuration will be described in which several types of second housings 20 having different mounting positions can be mounted on the front opening end 11b of the first housing 10.
4A and 4B are side views showing in-vehicle electronic devices 1A and 1B in a state where two types of second housings 20A and 20B having different mounting positions are mounted. The second housing 20A includes a monitor 21A, a frame-shaped panel 22A, and a front cover 23A. The second housing 20B includes a monitor 21B, a frame-shaped panel 22B, and a front cover 23B.
The second housing 20 has two types, the second housings 20A and 20B, while the first housing 10 and the upper cover 30 have one type.

5A and 5B are rear views showing a configuration example of the front covers 23A and 23B of the two types of second housings 20A and 20B having different mounting positions. The surfaces of the front covers 23A and 23B shown in FIGS. 5A and 5B face the front opening end 11b of the first housing 10.

In the following description, the in-vehicle electronic device 1A, the second housing 20A, the monitor 21A, the frame-shaped panel 22A, and the front cover 23A, and the in-vehicle electronic device 1B, the second housing 20B, the monitor 21B, the frame-shaped panel 22B, And when it is necessary to distinguish from the front cover 23B, add "A" or "B" after the code. If it is not necessary to distinguish between the two, the symbols "A" and "B" are not added.

As shown in FIGS. 4A and 4B, the mounting position of the second housing 20B with respect to the first housing 10 is lower than the mounting position of the second housing 20A with respect to the first housing 10. The mounting structures are the second housing 20A and the second housing 20A so that the second housing 20A and the second housing 20B having different mounting positions in the vertical direction can be mounted on the first housing 10 of one type. It is provided at different positions on the top and bottom of the housing 20B. Here, the mounting structure of the second housing 20A includes screw holes 24a, 24b, 24c, 24d, 24e, 24f, throttle portions 25a, 25b, positioning recesses 26a, 26b, and elastic fitting provided in the front cover 23A. Includes claws 27a, 27b, and protrusions 28a, 28b. The mounting structure of the second housing 20B includes screw holes 24a, 24b, 24c, 24d, 24e, 24f, throttle portions 25a, 25b, positioning recesses 26a, 26b, and elastic fitting claws 27a provided in the front cover 23B. , 27b, and protrusions 28a, 28b.

The screw hole 24a is provided at a position corresponding to the through hole 14a provided in the front opening end 11b of the first housing 10. Similarly, the screw holes 24b, 24c, 24d, 24e, and 24f are provided at positions corresponding to the through holes 14b, 14c, 14d, 14e, and 14f of the first housing 10, respectively. The six screws (not shown) penetrate the through holes 14a, 14b, 14c, 14d, 14e, 14f, respectively, and are fastened to the screw holes 24a, 24b, 24c, 24d, 24e, 24f.

As described above, the front cover 23A is provided with screw holes 24a, 24b, 24c, 24d, 24e, 24f corresponding to the mounting positions of the second housing 20A, and the front cover 23B is provided with the second housing 20B. Screw holes 24a, 24b, 24c, 24d, 24e, 24f corresponding to the mounting position are provided. Since the front cover 23 is prepared for each of the second housings 20 having different mounting positions, compared with the case where a large number of screw holes for each of the second housings 20 having different mounting positions are provided for one front cover 23. Therefore, it is possible to suppress a decrease in the strength of the front cover 23.

As shown in FIGS. 5A and 5B, the screw holes 24a, 24b, 24c, 24d, 24e, and 24f are provided on the right side, the left side, and the lower side of the front cover 23, and are provided on the upper side. It is not provided on one side of. Instead of screw holes, narrowing portions 25a, 25b, positioning recesses 26a, 26b, elastic fitting claws 27a, 27b, and protrusions 28a, 28b are provided on one upper side of the front cover 23.

The throttle portions 25a and 25b have a concave shape in which the front cover 23 projects toward the monitor 21. The drawing portions 25a and 25b are formed by, for example, drawing. The throttle portions 25a and 25b are provided with positioning recesses 26a and 26b for engaging with the positioning protrusions 16a and 16b (see FIGS. 6 and 7 described later). The space on the concave side of the throttle portions 25a and 25b, that is, the space facing the front opening end 11b of the first housing 10, is a space for avoiding interference between the front cover 23 and the first housing 10. ..

When the drawing portions 25a and 25b are formed by drawing, the drawing portions 25a and 25b preferably have a shape extending from the positions of the positioning recesses 26a and 26b to the upper end of the front cover 23. With this shape, it is possible to easily form the throttle portions 25a and 25b having different sizes in the front cover 23A and the front cover 23B.

The elastic fitting claws 27a and 27b have an elastically displaceable claw shape with at least the upper side open. The elastic fitting claws 27a and 27b are, for example, leaf springs in which a part of the front cover 23 is cut up in a U shape, and the upper side is a free end and the lower side is a fixed end. The elastic fitting claws 27a and 27b are provided with protrusions 28a and 28b protruding toward the front cover 23 side.

FIG. 6 is a top view showing a configuration example of the upper housing portion 11 according to the first embodiment. FIG. 7 is a rear perspective view showing a configuration example of the upper housing portion 11 according to the first embodiment. FIG. 8 is a front perspective view showing a configuration example of the upper cover 30 according to the first embodiment. FIG. 9 is a top view showing a configuration example of the in-vehicle electronic device 1B according to the first embodiment. FIG. 10 is a cross-sectional view taken along the line AA of FIG. FIG. 11 is a cross-sectional view taken along the line BB of FIG.
Here, a case where the front cover 23B is attached to the first housing 10 and the upper cover 30 is exemplified. Since the front cover 23B and the front cover 23A have the same mounting structure except for the position of the mounting structure, the case where the front cover 23A is mounted is omitted.

The upper housing portion 11 is formed with an upper opening end 11a and an upper half of the front opening end 11b. The lower half of the front opening end 11b corresponds to the front opening end of the lower housing portion 12. The upper housing portion 11 is provided with positioning protrusions 16a and 16b protruding from the front side of the upper opening end 11a toward the front cover 23 side. The width of the positioning protrusions 16a and 16b on the tip side is narrower than the width on the root side. The narrow portion of the positioning convex portion 16a on the tip end side engages with the positioning concave portion 26a of the front cover 23. Similarly, the narrow portion of the positioning convex portion 16b on the tip end side engages with the positioning concave portion 26b of the front cover 23. The front cover 23 and the first housing 10 are positioned by engaging the positioning protrusions 16a and 16b and the positioning recesses 26a and 26b.

FIG. 11 shows the length E of the narrow portion on the tip end side of the positioning convex portion 16a. As shown in FIG. 11, the aperture depth D of the aperture portion 25a is deeper than the root of the positioning convex portion 16a and shallower than the tip of the positioning convex portion 16a. Similarly, the drawing depth of the drawing portion 25b is deeper than the root of the positioning convex portion 16b and shallower than the tip of the positioning convex portion 16b. With this configuration, it is possible to position the first housing 10 and the front cover 23B while preventing the first housing 10 from interfering with the front cover 23B.

As shown in FIG. 8, the end portion of the upper cover 30 on the front cover 23 side is a bent portion 37 having a shape bent toward the first housing 10 side. The bent portion 37 is inserted from above into the elastic fitting claws 27a and 27b provided on the front cover 23 when the upper cover 30 is attached to the first housing 10. Further, fitting holes 38a and 38b are provided at positions of the bent portion 37 corresponding to the protrusions 28a and 28b.

As shown in FIG. 10, the protrusion 28a and the fitting hole 38a are fitted with the bent portion 37 inserted into the elastic fitting claw 27a. Similarly, the protrusion 28b and the fitting hole 38b are fitted with the bent portion 37 inserted into the elastic fitting claw 27b. By fitting the protrusions 28a and 28b with the fitting holes 38a and 38b, it becomes difficult for the bent portion 37 to come off from the elastic fitting claws 27a and 27b, and the elastic fitting claws 27a and 27b and the bent portion 37 are reliably connected. Contact. The noise resistance of the in-vehicle electronic device 1 can be ensured by the contact between the elastic fitting claws 27a and 27b and the bent portion 37. Further, by fitting the protrusions 28a and 28b and the fitting holes 38a and 38b, it is not necessary to provide a screw hole on one upper side of the front cover 23.

The elastic fitting claws 27a, 27b, protrusions 28a, 28b, bending portions 37, and fitting holes 38a, 38b form a fitting portion 2 for fitting the front cover 23 and the upper cover 30. ..

As shown in FIG. 9, a marking 29a indicating the position of the elastic fitting claw 27a and a marking 29b indicating the position of the elastic fitting claw 27b are provided on the upper portion of the front cover 23B. Similar markings 29a and 29b are also provided on the upper portion of the front cover 23A. On the upper part of the upper cover 30, a marking 39a indicating the position of the protrusion 28a to be fitted to the elastic fitting claw 27a and a marking 39b indicating the position of the protrusion 28b to be fitted to the elastic fitting claw 27b are provided. .. The markings 29a, 29b, 39a, 39b are linear marks formed by, for example, marking processing. Further, the markings 29a, 29b, 39a, 39b may be stickers or the like. When the operator attaches the upper cover 30, the markings 29a and 29b and the markings 39a and 39b can be used as marks, so that the deviation of the fitting position can be visually confirmed. Therefore, the assemblability of the in-vehicle electronic device 1 is improved.

As described above, the in-vehicle electronic device 1 according to the first embodiment includes the first housing 10, the second housing 20, the upper cover 30, and the through holes 14a, 14b, 14c, 14d, 14e, and 14f. , 24a, 24b, 24c, 24d, 24e, 24f, positioning protrusions 16a, 16b, throttle portions 25a, 25b, positioning recesses 26a, 26b, and fitting portion 2. The first housing 10 has a front opening end 11b that opens to the front and an upper opening end 11a that opens to the top. The second housing 20 has a front cover 23 that is screwed to the front opening end 11b of the first housing 10. The upper cover 30 is attached to the upper opening end 11a of the first housing 10. Through holes 14a, 14b, 14c, 14d, 14e, 14f for screw fastening are provided at the front opening end 11b. The screw holes 24a, 24b, 24c, 24d, 24e, 24f are provided at positions corresponding to the through holes 14a, 14b, 14c, 14d, 14e, 14f in the front cover 23. The positioning protrusions 16a and 16b have a shape protruding from the front side of the upper opening end 11a to the front cover 23 side. The throttle portions 25a and 25b are provided at positions corresponding to the positioning convex portions 16a and 16b on the front cover 23. The positioning recesses 26a and 26b are provided in the throttle portions 25a and 25b, and engage with the positioning protrusions 16a and 16b to position the first housing 10 and the front cover 23. The fitting portion 2 fits the front cover 23 and the upper cover 30. According to this configuration, since the front cover 23 is prepared for each of the second housings 20 having different mounting positions, screw holes for each of the second housings 20 having different mounting positions are provided for one front cover 23. It is possible to suppress a decrease in strength of the front cover 23 as compared with the case where a large number are provided.

Further, according to the first embodiment, the fitting portion 2 is provided on the elastic fitting claws 27a and 27b provided on the front cover 23 and the elastic fitting claws 27a and 27b having an open upper side. The protrusions 28a and 28b, the bent portion 37 having a bent shape at the end of the upper cover 30 on the front cover 23 side and being inserted into the elastic fitting claws 27a and 27b from above, and the bent portion 37 are provided. , Has fitting holes 38a, 38b into which the protrusions 28a, 28b are fitted. As a result, the in-vehicle electronic device 1 can ensure noise resistance (EMC: Electromagnetic Compatibility). Further, the in-vehicle electronic device 1 can reduce the number of screw points by using the fitting portion 2 instead of screwing.

Further, according to the first embodiment, the aperture depth D of the aperture portions 25a and 25b is deeper than the roots of the positioning convex portions 16a and 16b and shallower than the tips of the positioning convex portions 16a and 16b. With this configuration, positioning is possible while avoiding interference between the front cover 23 and the first housing 10.

Further, according to the first embodiment, the throttle portions 25a and 25b extend from the positioning recesses 26a and 26b to the upper end of the front cover 23. With this configuration, the throttle portions 25a and 25b can be easily formed.

Further, according to the first embodiment, the upper portion of the front cover 23 and the upper portion of the upper cover 30 have markings 29a, 29b, 39a, 39b indicating the position of the fitting portion 2, respectively. With this configuration, the assembleability of the in-vehicle electronic device 1 is improved.

In the first embodiment, an example in which the second housing 20 is a monitor unit having a monitor 21 is shown, but the second housing 20 is not limited to the monitor unit.
Further, in the first embodiment, an example in which the mounting position of the second housing 20 is different in the vertical direction is shown, but the mounting position may be different in the left and right.

Within the scope of the present invention, it is possible to modify any component of the embodiment or omit any component of the embodiment.

1,1A, 1B In-vehicle electronic device, 2 Fitting part, 10 First housing, 11 Upper housing part, 11a Upper opening end, 11b Front opening end, 12 Lower housing part, 13 Back cover, 14a, 14b, 14c, 14d, 14e, 14f through hole, 16a, 16b positioning convex part, 20, 20A, 20B second housing, 21,21A, 21B monitor, 22,22A, 22B frame-shaped panel, 23,23A, 23B front cover, 24a, 24b, 24c, 24d, 24e, 24f screw hole, 25a, 25b throttle, 26a, 26b positioning recess, 27a, 27b elastic fitting claw, 28a, 28b protrusion, 29a, 29b engraved, 30 Top cover, 37 Bent part, 38a, 38b fitting hole, 39a, 39b engraving, D Squeezing depth, E Positioning convex part length.

Claims (5)

A first housing having a front opening end that opens to the front and an upper opening end that opens to the top,
A second housing having a front cover screwed to the front opening end of the first housing, and a second housing.
An upper cover attached to the upper opening end of the first housing and
Through holes for screw fastening provided at the front opening end,
A screw hole for fastening a screw provided at a position corresponding to the through hole in the front cover,
A positioning convex portion protruding from the front side of the upper opening end to the front cover side,
A diaphragm portion provided at a position corresponding to the positioning convex portion on the front cover, and a diaphragm portion.
A positioning recess provided in the throttle portion and engaged with the positioning convex portion to position the first housing and the front cover.
An in-vehicle electronic device including a fitting portion for fitting the front cover and the upper cover. The fitting portion is
An elastic fitting claw with an open upper side provided on the front cover,
The protrusions provided on the elastic fitting claws and
A bent portion having a bent end portion of the upper cover on the front cover side and being inserted into the elastic fitting claw from above.
The vehicle-mounted electronic device according to claim 1, further comprising a fitting hole provided in the bent portion into which the protrusion is fitted. The vehicle-mounted electronic device according to claim 1, wherein the aperture depth of the aperture portion is deeper than the root of the positioning convex portion and shallower than the tip of the positioning convex portion. The vehicle-mounted electronic device according to claim 1, wherein the throttle portion extends from the positioning recess to the upper end of the front cover. The vehicle-mounted electronic device according to claim 1, wherein the upper portion of the front cover and the upper portion of the upper cover each have markings indicating the positions of the fitting portions.

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