JPH0951594A - Speaker grill for door trim - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the speaker grill for a door trim which can supply sufficient sound pressure to a crew man and has the high sticking strength to a skin material and a superior outward appearance. SOLUTION: Of the speaker grill for the door trim which has the skin material stuck on the top surface of a grill body 1 having many opening parts, the grill body 1 is formed of synthetic resin by integrally molding a proper number of lateral ribs 3 having slanting surfaces 3a and 3a in the same direction as their front and rear surfaces and many longitudinal ribs 4 which are narrower than the lateral ribs 3 and connect the respective lateral ribs 3 in a peripheral frame part 2 and forming many longitudinally long opening parts given directivity to the crew by the slanting surfaces 3a in the plate surface; and the respective lateral ribs 3 and longitudinal ribs 4 have their opening edges formed in an edge shape and also have flat surfaces 5 for skin material sticking without unevenness.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker grill for a door trim which can supply a sufficient sound pressure to an occupant and has a good adhesion of a skin material and an excellent appearance.

[0002]

2. Description of the Related Art Conventionally, as a speaker grill for audio equipment for automobiles mounted on a door trim, for example, as disclosed in Japanese Utility Model Laid-Open No. 60-121187, the surface of a speaker grill body having a large number of through holes. It is usually mounted in a predetermined position on the door trim with the skin material attached to the speaker. However, since the through hole is simply bored vertically from the surface, the sound pressure generated from the speaker is the speaker grill. Since it is supplied from the main body in the vertical direction, sufficient sound pressure cannot be supplied to the ears of the occupant located diagonally above the speaker position. Therefore, recently, for example, the actual exploitation Sho 62-1334.
As disclosed in Japanese Patent Laid-Open No. 89 and Japanese Utility Model Laid-Open No. 63-35394, there is also proposed a vehicle having directivity toward the occupant so that a sufficient sound pressure can be supplied to the occupant.

[0003] However, all of the conventional ones having directivity for the occupants have fins whose direction can be adjusted are attached to the front surface of the speaker grille, which has a complicated structure and is inferior in workability of mounting and the frequency of failure occurrence. There is also a problem that the production cost is high, and further that the direction of the fins cannot be adjusted as desired when a skin material is attached to the surface, and the surface is uneven and the skin material is clean. There was a problem that it could not be attached to and it looked bad.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above problems of the prior art, has directivity and can supply sufficient sound pressure to an occupant, and has a simple structure. For door trim that has excellent workability and productivity and can significantly reduce the production cost. Furthermore, it can be attached accurately and evenly without causing wrinkles on the skin material and can present an excellent design surface. It was completed for the purpose of providing a speaker grill.

[0005]

A speaker grill for a door trim according to the present invention made to solve the above-mentioned problems includes:
In a speaker grill for a door trim, which is attached to a door trim with a skin material attached to the surface of a grill body having a large number of openings, the grill body has a horizontal rib with a front and rear surface inclined in the same direction in a peripheral frame portion. A synthetic resin in which a suitable number and a plurality of vertical ribs that are narrower than this and connect a plurality of horizontal ribs are integrally molded to form a large number of vertically elongated opening portions on the plate surface, which are provided with directivity toward the occupant by the inclined surface. It is a molded product, and each of the horizontal ribs and the vertical ribs is characterized in that the opening edge thereof has an edge shape and the surface is a flat surface for attaching a skin material without unevenness.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, it is the inclined surfaces formed in the front and rear surfaces of the lateral ribs in the same direction that are provided with directivity toward the occupant, so that the inclined surfaces are the same. Is important for giving directivity to the occupant, and therefore, all the lateral ribs are made to bulge from the back surface of the peripheral frame portion and have sufficient thickness. Further, out of a large number of vertical ribs, every two or three vertical ribs are bulged from the back surface of the peripheral frame portion so as to ensure the same thickness as the horizontal ribs, and the bulged horizontal ribs and vertical ribs are used to withstand the same. It is preferable to secure impact strength. Further, in order to manufacture such a speaker grill, it can be formed by a normal injection molding in which die cutting is performed using the vertically elongated opening having the inclined surface so that the front surface side becomes a parting line, In this case, a flat surface with no unevenness can be obtained by forming the parting line on the front surface side.

Next, a detailed description will be given of an illustrated example in which one example of the embodiment of the present invention is applied to a driver's seat side of an automobile door trim. Reference numeral 1 denotes a grill body formed of ABS resin, polyolefin resin, or the like. The grill body 1 has a front and rear surfaces inclined in the same direction in a peripheral frame portion 2 thereof.
It is a synthetic resin molded product in which a suitable number of horizontal ribs 3 a and 3 a and a number of vertical ribs 4 that are narrower than the horizontal ribs 3 and connect the horizontal ribs 3 are integrally molded. A large number of vertically elongated openings 5 are formed by the vertical ribs 3 and the vertical ribs 4 toward the ears of the occupant. The vertical opening 5 is a long hole having a length of 25 mm and a width of 4.5 mm. The vertical distance between the vertical openings 5 is 4 mm, which is the same as the width of the horizontal rib 3, and the horizontal distance is the width of the vertical rib 4. Same as 2.5mm. All lateral ribs 3 are 3mm
It has a sufficient thickness of about 5 mm, which is expanded by 2 mm from the back surface of the thick peripheral frame portion 2. Also, among the many vertical ribs 4, every two or three vertical ribs have the same thickness as the horizontal rib 3. It is bulged by 2 mm from the back surface of the peripheral frame portion 2 so as to ensure the thickness. The aperture ratio of the vertically long opening 5 with respect to the axial direction toward the position of the occupant's ear on the plate surface is about 60%,
It has a sufficient aperture ratio as compared with the conventional one having about 5%. In addition, each of the horizontal ribs 3 and the vertical ribs 4 has an opening edge having an edge shape, and the surface thereof is a flat surface 6 on which the skin material is adhered, which has no unevenness. Reference numeral 7 is a skin material attached to the surface of the speaker grill body 1.

The speaker grill thus constructed is
As shown in FIGS. 3 and 5, the speaker 10 embedded in the door trim 20 is used by being mounted on the front surface thereof, but the opening formed in the plate surface of the grill body 1 is not a mere through hole. Instead, by integrally forming an appropriate number of horizontal ribs 3 having front and rear surfaces as inclined surfaces 3a, 3a in the same direction and a plurality of vertical ribs 4 narrower in width and connecting the respective horizontal ribs 3 in the peripheral frame portion. In the vertically elongated opening 5 formed in a large number of sections, the directivity is given to the occupant by the inclined surfaces 3a at the upper and lower edges thereof, so that the sound emitted from the speaker 10 is supplied to the occupant with a sufficient sound pressure. It will be. Further, since the opening edges of the horizontal ribs 3 and the vertical ribs 4 are edge-shaped and the surface is a flat surface 6 for attaching a skin material without unevenness, the skin material 7 can be accurately and accurately without wrinkles. It can be applied evenly and exhibits an excellent design surface.

[0009]

As is apparent from the above description, the present invention has directivity and can supply a sufficient sound pressure to an occupant, and has a simple structure to improve installation workability and productivity. It is possible to significantly reduce the production cost, and furthermore, to adhere the skin material accurately and evenly without causing wrinkles and the like, and to provide an excellent design surface. Therefore, the present invention, as a speaker grill for a door trim that eliminates the conventional problems, has a great contribution to the industrial development.

[Brief description of drawings]

FIG. 1 is a plan view showing an example of the present invention.

FIG. 2 is a perspective view of a main part of FIG.

FIG. 3 is a vertical sectional side view of FIG.

4 is a cross-sectional plan view of FIG.

FIG. 5 is a schematic view showing a state in which the present invention is attached to a door trim.

[Explanation of symbols]

 1 Speaker grill main body 2 Surrounding frame part 3 Horizontal rib 3a Inclined surface 4 Vertical rib 5 Vertically elongated opening 6 Flat surface 7 Skin material

Claims (3)

[Claims] 1. A speaker trim for a door trim, which is attached to a door trim in a state where a skin material (7) is attached to the surface of a grill body (1) having a large number of openings.
(1) Horizontal ribs whose front and rear surfaces are inclined surfaces (3a) and (3a) in the same direction
An appropriate number of (3) and a number of vertical ribs (4) that are narrower than this and that connect each horizontal rib (3) are integrally formed in the peripheral frame part (2), and the inclined surface (3a ) Is a synthetic resin molded product in which a large number of vertically elongated openings (5) that give directionality to the occupant are formed and the lateral edges of each horizontal rib (3) and vertical rib (4) are edge-shaped. The speaker grill for door trim is characterized in that the surface is a flat surface that is attached to a skin material without unevenness. 2. The speaker grille for door trim according to claim 1, wherein all the lateral ribs (3) are bulged on the back side so as to be thicker than the peripheral frame portion. 3. The speaker for door trim according to claim 1, wherein a part of the plurality of vertical ribs (4) is bulged to the back side so that a part of the vertical ribs has the same thickness as the horizontal rib (3). grill.