JP7259604B2 - vehicle display - Google Patents

Description

The present disclosure relates to a vehicle display device.

Techniques for preventing vibration of a speaker mounting panel due to vibration of the speaker are known.

JP 2004-320616 A

However, it is difficult to effectively reduce vibration (abnormal noise) caused by the vibration of the speaker in the vehicle display device with the conventional technology as described above.

Accordingly, an object of the present disclosure is to effectively reduce vibration (abnormal noise) caused by vibration of a speaker in a vehicle display device.

In one aspect, a cover member forming a housing;
a speaker attached to the cover member,
A vehicular display device is disclosed in which a first slit is formed around the mounting area of the speaker in the cover member.

Advantageous Effects of Invention According to the present disclosure, it is possible to effectively reduce vibration (abnormal noise) caused by vibration of a speaker in a vehicle display device.

1 is a front view schematically showing a vehicle display device according to an embodiment; FIG. FIG. 3 is a perspective view of a speaker mounting portion and its surroundings in the vehicle display device as viewed from the rear side; 1. It is a figure which shows the internal structure of the display apparatus 1 for vehicles in Q1 part of FIG. It is the perspective view which looked at the speaker attachment part in the outer case from the front side. It is explanatory drawing of a modification. FIG. 11 is an explanatory diagram of another embodiment; FIG. 11 is an explanatory diagram of yet another embodiment; FIG. 11 is an explanatory diagram of yet another embodiment; It is a perspective view for explaining an example of anti-vibration measures using rubber. FIG. 4 is a perspective view of the inside of a housing for explaining an example of anti-vibration measures using rubber;

Each embodiment will be described in detail below with reference to the accompanying drawings. It should be noted that, in each figure, for ease of viewing, there are cases where only a part of a plurality of parts having the same attribute are given reference numerals.

FIG. 1 is a front view schematically showing a vehicle display device 1 according to one embodiment. FIG. 1 schematically shows part of the components inside the vehicle display device 1 by dotted lines. Also, in FIG. 1, three directions orthogonal to each other, namely, the X direction, the Y direction, and the Z direction are defined. Hereinafter, the Z direction is defined as the vertical direction, the positive side is defined as the upper side, and the negative side is defined as the lower side. The X direction is the left-right direction (horizontal direction), the Y direction is the front-rear direction, the positive side is the front side (front side), and the negative side is the back side (rear side).

The vehicle display device 1 is in the form of a meter, and is mounted on an instrument panel of a vehicle.

In this embodiment, as an example, the vehicular display device 1 has a relatively oblong shape. The display device 1 for vehicle is covered with a cover (lens) 2 on the front side. etc. In this case, the liquid crystal panel 5 overlaps the speaker 10 when viewed from the front, but the liquid crystal panel 5 is arranged closer to the front than the speaker 10 . It should be noted that the arrangement of various parts is not limited to the illustrated mode, and is arbitrary.

Next, the structure related to the speaker 10 among the structures of the vehicle display device 1 will be described with reference to FIG. 2 and subsequent figures.

FIG. 2 is a perspective view of the speaker mounting portion 41 and its surroundings in the vehicle display device 1 as viewed from the rear side. FIG. 3 is a diagram showing the internal structure of the vehicle display device 1 at the Q1 portion of FIG. FIG. 4 is a perspective view of the speaker mounting portion 41 of the outer case 4 as viewed from the front side.

The vehicle display device 1 includes an outer case 4 (an example of a cover member) and a speaker 10 , and the speaker 10 is attached to the outer case 4 .

The outer case 4 is a case on the rear side of the vehicle display device 1, and is formed of resin or the like, for example. The outer case 4 forms a housing of the vehicle display device 1 together with the cover 2, the bezel 3, and the like. For example, the outer case 4 is engaged with the bezel 3 via the claw portions 31 of the bezel 3 . Note that the claw portion 31 is engaged with the engagement hole 400 of the outer case 4 . Note that the bezel 3 and the cover 2 are similarly engaged with claws or the like. A plurality of such engaging portions are set around the outer case 4 , and such engaging portions may become sources of noise caused by vibration of the speaker 10 .

The speaker 10 outputs various sounds. For example, the speaker 10 outputs a sound when an alarm or the like is displayed on the vehicle display device 1 .

In this embodiment, as an example, the outer shape of the speaker 10 is circular. In the following description, the radial direction refers to the radial direction around the circular shape of the speaker 10 . Therefore, the radially outer side refers to the side away from the center of the circular shape of the speaker 10 , and the radially inner side refers to the side toward the circular center of the speaker 10 . Moreover, the circumferential direction corresponds to the circumferential direction around the center of the circle related to the external shape of the speaker 10 .

As shown in FIG. 2 , the outer case 4 includes a base portion 40 that extends substantially along the XZ plane, and side wall portions 47 that stand on the outer periphery of the base portion 40 . A speaker mounting portion 41 is formed on the base portion 40 . The speaker mounting portion 41 forms a mounting area for the speaker 10 in the outer case 4 .

The speaker mounting portion 41 has a circular shape corresponding to the outer shape of the speaker 10 when viewed from the front (viewed in the Y direction). The speaker mounting portion 41 has a bottom portion 410 protruding toward the back side from the basic surface of the base portion 40 on the back side, and the bottom portion 410 is connected to the basic surface of the base portion 40 by a peripheral wall 412 . A vertical slit 411 is formed in the bottom surface portion 410 of the speaker mounting portion 41 .

In addition, the speaker mounting portion 41 has an inner rib 414 (an example of a second rib) on the front side that surrounds the speaker 10 from the outside in the radial direction. The inner rib 414 is formed in a manner that defines the radially outer boundary of the speaker mounting portion 41 .

The inner rib 414 is continuous with the peripheral wall 412 in the vertical direction and protrudes forward from the basic surface of the base portion 40 . The inner rib 414 has a function of increasing the rigidity of the outer case 4 around the speaker mounting portion 41 by surrounding the speaker mounting portion 41, and a function of suppressing vibration of the speaker mounting portion 41 caused by the vibration of the speaker 10. have Note that in a modified example, the inner rib 414 may be omitted.

The speaker mounting portion 41 has an engaging claw 415 (an example of an engaging portion) radially inside the inner rib 414 . For example, as shown in FIG. 4, the engaging claws 415 may be provided at three locations at equal intervals in the circumferential direction. The engaging claw 415 engages with the front side of the speaker 10 ( FIG. 3 ) and restrains the speaker 10 with respect to the outer case 4 . In addition, as shown in FIG. 4 and the like, the inner rib 414 may have a shape that expands radially outward at the location where the engaging claw 415 is provided. Also, the inner rib 414 may have a slit 4141 for passing the wiring 11 (see FIG. 3) from the connector portion 10A of the speaker 10 .

The outer case 4 has a first slit 51 formed around the speaker mounting portion 41 in the base portion 40 .

The first slit 51 is provided radially outward of the inner rib 414 . A first slit 51 is formed around the speaker mounting portion 41 . Below, the portion of the outer case 4 radially outside the first slit 51 is also referred to as a "peripheral portion 49".

The first slit 51 is formed around the speaker mounting portion 41 and has a function of making it difficult for the vibration of the speaker 10 to be transmitted to the area around the speaker mounting portion 41 in the outer case 4 . That is, the first slit 51 functions to reduce transmission of vibration to the peripheral portion 49 by separating the speaker mounting portion 41 from the peripheral portion 49 in the outer case 4 . Hereinafter, such a function of the first slit 51 is also referred to as "vibration transmission suppressing function".

The first slits 51 preferably extend in such a manner as to cover the radially outer side of each of the engaging claws 415 in the entire circumference around the speaker mounting portion 41 in order to efficiently enhance the vibration transmission suppressing function. do. This is because the vibration of the speaker 10 is transmitted to the outer case 4 via the engaging claws 415 .

Note that the first slit 51 does not extend continuously over the entire circumference of the speaker mounting portion 41 , but is located in a part of the entire circumference of the speaker mounting portion 41 . This is because the speaker mounting portion 41 is a part of the outer case 4 and the speaker mounting portion 41 is supported by the peripheral portion 49 of the outer case 4 .

Specifically, the speaker mounting portion 41 is connected (supported) to the peripheral portion 49 of the outer case 4 via the bridge portion 43 . In this embodiment, three bridge portions 43 are formed between the engaging claws 415 in the circumferential direction corresponding to the three engaging claws 415 . This allows the bridge portion 43 to be maximally separated from the engaging claw 415 in the circumferential direction, and as a result, the vibration transmission suppressing function of the first slit 51 can be efficiently enhanced. Note that the number of bridge portions 43 is arbitrary as long as it is one or more.

The outer case 4 is preferably formed with second slits 52 on both sides of the bridge portion 43 in the circumferential direction, as shown in FIG. In this embodiment, as an example, the second slits 52 are formed on both circumferential sides of each of the three bridge portions 43 .

The second slit 52 extends radially outward from the circumferential end of the first slit 51 . Therefore, the extension range (an example of the first circumferential range) of the first slit 51 in the entire circumference around the speaker mounting portion 41 is up to the formation position of the second slit 52 . In other words, the second slits 52 are formed at both ends of a range (an example of a second circumferential range) in which the first slits 51 are not formed in the entire circumference around the speaker mounting portion 41 .

The second slits 52 are paired to form a boundary (boundary in the circumferential direction) of the bridge portion 43 , thereby reducing the rigidity of the bridge portion 43 . It has a function of suppressing transmission to the outside (the side away from the speaker 10).

In this embodiment, the bridge portion 43 extends substantially without a step with respect to the XZ plane, but is formed with a step with respect to the XZ plane (that is, with a step in the Y direction). good too. FIG. 5 is an explanatory diagram of such a modified bridge portion 43A, corresponding to a cross-sectional view taken along line AA in FIG. A bridge portion 43A shown in FIG. 5 has a step 430 (curved portion) in the Y direction. In this case, the bridge portion 43A is easily bent in the Y direction, and the function of suppressing the transmission of the vibration of the speaker 10 to the outside (the side away from the speaker 10) via the bridge portion 43A can be enhanced. Note that a plurality of steps such as the step 430 may be provided along the radial direction.

The outer case 4 preferably has an outer rib 416 (an example of a first rib) radially outward of the first slit 51 on the front side. In this embodiment, the height of the outer ribs 416 is the same as the height of the inner ribs 414 as an example, but they may be different.

The outer rib 416 extends circumferentially along the radially outer side of the first slit 51 and terminates at the second slit 52 . The outer rib 416 may be formed continuously from the radially outer edge of the first slit 51 . The outer rib 416 has a function of increasing the rigidity of the peripheral portion 49 (the portion outside the first slit 51 ) of the outer case 4 . In other words, the outer rib 416 has a function of suppressing a reduction in rigidity of the outer case 4 (rigidity around the first slit 51 ) that may occur due to the formation of the first slit 51 .

The outer rib 416 may be connected to another rib (hereinafter referred to as "base rib 491") erected on the base portion 40 of the outer case 4, as shown in FIG. Some of the plurality of base ribs 491 extend to the side wall portion 47 of the outer case 4 as shown in FIG. 4 and have the function of increasing the rigidity of the outer case 4 . By connecting the outer rib 416 to such a base rib 491, the above-described function of the outer rib 416 can be effectively enhanced.

In this way, according to this embodiment, since the first slit 51 is formed around the speaker mounting portion 41 in the outer case 4, the vibration of the speaker 10 is transmitted from the speaker mounting portion 41 to the surrounding portion 49. can be effectively suppressed. As a result, it is possible to effectively reduce noise that may occur due to vibration of the speaker 10 (for example, noise that may occur at each engaging portion related to the claw portion 31).

Especially in this embodiment, as shown in FIG. 1, the outer case 4 is horizontally long, and the engagement portion is likely to loose due to manufacturing errors or the like. Therefore, the first slit 51 is particularly suitable for such outer case 4 .

Further, according to this embodiment, the first slit 51 extends over a relatively wide range in the circumferential direction, although it is part of the entire circumference around the speaker mounting portion 41 . As a result, the speaker mounting portion 41 and its peripheral portion 49 are separated by the first slit 51 over a relatively wide range in the circumferential direction, so that the vibration of the speaker 10 is transmitted from the speaker mounting portion 41 to its peripheral portion 49. can be effectively suppressed.

Further, according to the present embodiment, the first slit 51 is part of the entire circumference around the speaker mounting portion 41 and extends radially outward with respect to the engaging claw 415 , so that the sound from the speaker 10 is reduced. The first slit 51 can be arranged in the vicinity of the engaging claw 415, which is the vibration transmission path. As a result, the first slit 51 can effectively suppress the vibration of the speaker 10 from being transmitted from the speaker mounting portion 41 to the surrounding portion 49 .

Further, according to this embodiment, the bridge portion 43 that supports the speaker mounting portion 41 with respect to the peripheral portion 49 has the second slits 52 on both sides in the circumferential direction, so that the flexibility of the bridge portion 43 is increased. be able to. Accordingly, when the vibration of the speaker 10 is transmitted from the speaker mounting portion 41 to the peripheral portion 49 via the bridge portion 43 , the vibration can be effectively damped by the bridge portion 43 . As a result, it is possible to effectively suppress the vibration of the speaker 10 from being transmitted from the speaker mounting portion 41 to its peripheral portion 49 .

Further, according to the present embodiment, the outer ribs 416 are formed radially outward of the first slits 51 , so that reduction in rigidity of the peripheral portion 49 due to the first slits 51 can be suppressed. In addition, since the inner rib 414 is formed on the radially outer edge of the speaker mounting portion 41 (on the radially inner side of the first slit 51 ), the rigidity of the speaker mounting portion 41 is increased, and vibration of the speaker 10 is caused by the vibration of the speaker 10 . Vibration of the speaker mounting portion 41 itself can be reduced. As a result, vibrations that may be transmitted from the speaker mounting portion 41 to its peripheral portion 49 can be effectively reduced.

Next, another embodiment will be described with reference to FIG. 6 and subsequent figures.

FIG. 6 is a plan view showing an outer case 4A according to another embodiment.

The outer case 4A according to this embodiment differs from the outer case 4 according to the above-described embodiment in that a third slit 53 is added. The third slit 53 extends vertically so as to be continuous with the radially outer end of the second slit 52 . Thereby, the transmission of vibration can be reduced (or blocked) at the position of the third slit 53 . In particular, the first slit 51 is not formed in a relatively wide circumferential range on the radially outer side of the connector portion 10A of the speaker 10 in the entire circumference around the speaker mounting portion 41 . Therefore, the third slit 53 can effectively reduce the vibration transmitted through the bridge portion 43 in such a range. In this embodiment, as shown in FIG. 6, the third slit 53 extends parallel to the vertical direction, but may extend in a manner inclined with respect to the vertical direction, or may have a curved shape. It may be formed in a manner including sections.

FIG. 7 is a plan view showing an outer case 4B according to yet another embodiment.

The outer case 4B according to this embodiment has base ribs 491 (hereinafter referred to as "upper and lower ribs 4911" to distinguish them from other base ribs 491) which are higher than the outer ribs 416 in contrast to the outer case 4 according to the above-described embodiment. ) is added. The upper and lower ribs 4911 are provided on both sides of the speaker mounting portion 41 in the left-right direction. The upper and lower ribs 4911 may extend between the upper and lower side walls 47 of the outer case 4B, as shown in FIG. As a result, in the outer case 4B, the portion outside the upper and lower ribs 4911 (outer in the X direction) and the portion between the two upper and lower ribs 4911 in the X direction (that is, the speaker mounting portion 41, the bridge portion 43, and the peripheral portion). 49) are partitioned by upper and lower ribs 4911. As a result, the vibration is effectively transmitted from the portion between the two upper and lower ribs 4911 in the X direction (that is, the speaker mounting portion 41, the bridge portion 43, and part of the peripheral portion 49) to the outside (outside in the X direction). can be reduced to

In the example shown in FIG. 7, the height of the upper and lower ribs 4911 is set higher than the outer ribs 416 in order to enhance the above-described effects of the upper and lower ribs 4911, but may be the same as the outer ribs 416. . Conversely, like the outer case 4C according to the modification shown in FIG. 8, the height of some or all of the base ribs 491C other than the upper and lower ribs 4911 may be set relatively high like the upper and lower ribs 4911. .

By the way, in each of the above-described embodiments, as described above, since the vibration of the speaker 10 can be effectively suppressed from being transmitted from the speaker mounting portion 41 to the peripheral portion 49, the anti-vibration measures using rubber are substantially becomes unnecessary. However, if necessary, anti-vibration measures using rubber may be implemented.

9 and 10 are explanatory diagrams of an example of anti-vibration measures using rubber, and FIG. 9 is a perspective view showing a speaker 10 and an outer case 4 to which a rubber member 20 for anti-vibration measures is attached. FIG. 10 is a perspective view of the vehicular display device 1 cut along a plane passing through the speaker 10 to which the rubber member 20 for anti-vibration measures is attached.

The rubber member 20 is attached to the front side of the speaker 10 . In the rubber member 20, as shown in FIG. 10, the convex portion 21 on the front side contacts the back side surface of the substrate 6. As shown in FIG. As a result, vibration of the speaker 10 is reduced through the rubber member 20 . In FIG. 10 , the rubber member 20 does not contact the substrate 6 entirely on the front side, but has a concave portion 22 in part. The recess 22 is provided to avoid the lead terminals 5A of the liquid crystal panel 5. As shown in FIG. As a result, even when the speaker 10 is arranged on the back side of the liquid crystal panel 5, the rubber member 20 can be used for anti-vibration measures.

Although each embodiment has been described in detail above, it is not limited to a specific embodiment, and various modifications and changes are possible within the scope described in the claims. It is also possible to combine all or more of the constituent elements of the above-described embodiments.

1 vehicle display device 2 cover (lens)
2 cover 3 bezel 4 outer case 4A outer case 4B outer case 4C outer case 5 liquid crystal panel 6 substrate 7 TFT panel unit 10 speaker 10A connector portion 11 wiring 20 rubber member 21 convex portion 22 concave portion 31 claw portion 40 base portion 41 speaker mounting portion 43 Bridge portion 43A Bridge portion 47 Side wall portion 49 Peripheral portion 51 First slit 52 Second slit 53 Third slit 400 Engaging hole 410 Bottom portion 411 Slit 412 Peripheral wall 414 Inner rib 415 Engaging claw 416 Outer rib 430 Step 491 Base rib 491C Base rib 4141 Slit 4911 Upper and lower ribs

Claims (6)

a cover member (4) forming a housing;
A speaker (10) attached to the cover member,
A vehicular display device (1), wherein a first slit (51) is formed around the mounting area of the speaker in the cover member. The cover member has an engaging portion (415) that engages with the speaker,
2. The vehicle display device according to claim 1, wherein said first slit is formed outside said engaging portion when a side away from the center of said mounting area is defined as an outer side with respect to said engaging portion. . a plurality of the engaging portions are provided in such a manner that each of the engaging portions is positioned at a different position around the mounting area;
The cover member has the first slits in each first circumferential range positioned outside each of the engaging portions of the entire circumference around the mounting area, and has a plurality of the first circumferential areas. 4. A pair of second slits (52) extending away from the center of said mounting area at the end of at least one of said second circumferential ranges of each second circumferential range between ranges. 2. The vehicle display device according to 2. 4. The vehicular display device according to claim 3, wherein said cover member has a step (430) in a direction of penetration of said second slits at a portion between said pair of second slits. The vehicle according to any one of claims 2 to 4, wherein the cover member has a first rib (416) extending in the extending direction of the first slit outside the first slit. display device. 6. The vehicle display device according to claim 5, wherein the cover member further has a second rib (414) provided inside the first slit so as to surround the attachment area.

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