JP2013021552A - Speaker grill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply attach a blind sheet without performing any fastening process.SOLUTION: Three insertion pieces 31 are protruded on a rear surface of a panel body 17 so that they are spaced from the rear surface of the panel body 17 and surround a sound emission part 25 with their respective front ends oriented toward the outside of the sound emission part 25. Notch parts s2 are formed in a blind sheet S so as to correspond to the insertion pieces 31. The blind sheet S is attached to the rear surface of the panel body 17 by inserting the insertion pieces 31 into the notch parts s2, respectively, in a state that the blind sheet S is disposed correspondingly to the rear surface of the sound emission part 25.

Description

  The present invention relates to a speaker grill in which a sound emitting part in which a large number of through holes are gathered is covered with a blindfold sheet from the back side.

  Patent Document 1 discloses a vehicle door trim including a speaker grill. The sound emitting portion of the speaker grill is integrally formed with a grid-like rib, and protrusions are integrally provided at appropriate positions of the grid-like rib. The sound emitting part is covered with a blindfold sheet from the back side. In the blindfold sheet, a slit is formed so as to correspond to the protrusion, and the blindfold sheet is overlapped on the back surface of the sound emitting portion so that the protrusion protrudes from the slit, and the protrusion is caulked, thereby blindfolding. The seat is kept from coming off the sound emission part.

JP 2009-292438 A (paragraph 0018 column, paragraph 0022 column, FIGS. 2 to 5)

  The speaker grill of the above-mentioned Patent Document 1 requires time and effort because it requires caulking to attach the blindfold sheet.

  The present invention has been made in view of such a point, and an object of the present invention is to easily attach a blindfold sheet without performing a caulking process.

  In order to achieve the above object, the present invention is characterized in that it is easily attached by hooking a blindfold sheet.

  Specifically, the present invention provides a speaker grille having a panel main body having a sound emitting portion in which a large number of through holes are gathered, and a blindfold sheet attached to the back surface of the panel main body so as to cover the sound emitting portion. The following solution was taken.

  That is, according to the first aspect of the present invention, at least three insertion pieces form a gap with the back surface of the panel main body on the back surface of the panel body, and the sound emitting portion is directed toward the outside of the sound emitting portion. The blindfold sheet is provided with a notch portion corresponding to the insertion piece, and the blindfold sheet is disposed in correspondence with the back surface of the sound emitting portion. It is attached to the back surface of the said panel main body by inserting in a notch part.

  A second invention is characterized in that, in the first invention, a projecting piece projects from the projecting end of at least one of the insertion pieces toward the back side of the panel body.

  According to a third invention, in the first or second invention, an annular rib protrudes from the back surface of the panel body so as to surround the sound emitting portion in an annular shape, and the insertion piece is a side wall of the annular rib. It is formed near the rib protruding end of the outer surface.

  According to the first invention, the blindfold sheet can be easily attached to the back surface of the panel body so as to cover the sound emitting portion only by inserting the insertion piece formed on the back surface of the panel body into the cut portion of the blindfold sheet.

  According to the second aspect of the invention, the protrusion formed on the protruding end of the insertion piece pushes the periphery of the cut portion of the blindfold sheet toward the back side of the panel body, so that the blindfold sheet is difficult to come off from the panel body.

  According to the third invention, with the blindfold sheet attached to the back surface of the panel body, the outer peripheral portion of the blindfold sheet abuts against the rib protruding end of the annular rib and is pulled to the back surface side of the panel body. The sheet is attached to the sound emitting part in a tensioned state, so that the prevention of detachment from the panel body is ensured.

It is a perspective view before the assembly | attachment of the speaker grill which concerns on embodiment, a speaker, and an instrument panel main body. It is the disassembled perspective view which looked at the speaker grill which concerns on embodiment from the back surface side. It is a reverse view of the speaker grill which concerns on embodiment. (A) is sectional drawing corresponding to the AA line of FIG. 3 just before completion | finish of a blindfold sheet | seat installation, (b) is sectional drawing in the AA line of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a resin instrument panel main body 1 which is a main body of a vehicle instrument panel.

  An elongated front defroster air outlet 3 extending in the vehicle width direction is formed on the vehicle body front end side of the instrument panel body 1. A circular side vent air outlet 5 is formed at both ends in the vehicle width direction on the vehicle rear side of the front defroster air outlet 3 and a rectangular speaker mounting portion 7 is formed in the middle of the vehicle width direction. Yes.

  The speaker mounting portion 7 has a circular mounting hole 9 in the center, and a speaker 11 is mounted in the mounting hole 9 and is covered with a speaker grill 13. Around the mounting hole 9 of the speaker mounting portion 7, four locking holes 15 are formed.

  The speaker grille 13 includes a rectangular plate-like resin panel body 17 having the same shape as the speaker mounting portion 7 and a blindfold sheet S. As shown in FIG. One locking means 19 is provided so as to correspond to the locking hole 15.

  The locking means 19 is configured by attaching a resin-made locking claw 23 to a substantially H-shaped mounting seat 21 protruding integrally with the back surface of the panel body 17.

  Specifically, a mounting hole 21a is formed in the middle of the mounting seat 21 in the projecting direction, while the locking claw 23 includes a pair of locking piece portions 23a branched from the tip into the bifurcated portion. It consists of a pair of claw parts 23b integrally formed inside the piece part 23a. The claw part 23b is attached to the attachment seat 21 by engaging the claw part 23b with the attachment hole 21a from both sides. The locking means 19 is configured.

  Then, the locking claw 23 is inserted into the locking hole 15 of the speaker mounting portion 7 and the locking piece portion 23a is locked to the periphery thereof so that the speaker grille 13 does not fall off the speaker mounting portion 7. It has become. In FIG. 2, only one locking claw 23 is shown, but it is attached to each mounting seat 21.

  In a region excluding the outer peripheral portion of the panel body 17, a circular sound emitting part 25 is provided so as to be surrounded by the four locking means 19, and the sound emitting part 25 penetrates the panel body 17 on the front and back sides. A large number of through holes 25a are assembled. In FIG. 2, the through hole 25a is only partially represented.

  A circular annular rib 27 is integrally provided on the back surface of the panel body 17 so as to surround the sound emitting portion 25 in a ring shape, and four reinforcing ribs 29 are formed in a cross shape on the back surface of the sound emitting portion 25. These reinforcing ribs 29 extend radially from the center of the sound emitting portion 25 and are integrally connected to the inner surface of the side wall of the annular rib 27 to divide the sound emitting portion 25 into four equal parts. And the said through-hole 25a is formed in the area | region except the reinforcing rib 29 of the said sound emission part 25, and the recessed part 25b is formed in the location corresponding to the said reinforcing rib 29, without the through-hole 25a (FIG. 4). reference).

  As shown in FIG. 4, as shown in FIG. 4, three rectangular frame-shaped insertion pieces 31 are provided on the rear surface of the panel main body 17, more specifically, near the rib protruding end of the side wall outer surface of the annular rib 27. A gap is formed, and the front end of the sound emitting unit 25 is directed outward so as to surround the sound emitting unit 25 so as to be integrally formed. Of the three insertion pieces 31, a protruding piece 31 a is integrally protruded from the protruding end of one insertion piece 31 toward the back side of the panel body 17. Each insertion piece 31 is formed with an opening 31 b penetrating in the front and back direction of the panel body 17. The opening 31b is formed in all the three insertion pieces 31. However, the opening 31b may be formed only in the insertion piece 31 having the protruding piece 31a. That is, since the projecting piece 31a constitutes an undercut at the time of molding, it is necessary to form the back surface of the projecting piece 31a with a slide mold.

  On the other hand, as shown in FIG. 3, the blindfold sheet S is attached to the back surface of the panel body 17 so as to cover the sound emitting part 25. As shown in FIG. 2, the blindfold sheet S is formed to be slightly larger than the annular rib 27 (sound emission part 25), and the three bulging parts s1 divide the circumference into three equal parts on the outer peripheral part. A cut portion s2 is formed at the base end of each bulging portion s1 corresponding to the insertion piece 31. The blindfold sheet S is made of a material that expands when pulled. For example, non-woven fabric, woven fabric, knitted fabric, urethane sheet, and the like. And the said blindfold sheet S is attached to the back surface of the said panel main body 17 by inserting the said insertion piece 31 in the said notch part s2 in the state arrange | positioned corresponding to the back surface of the said sound emission part 25. FIG.

  Specifically, with the panel body 17 facing down, the blindfold sheet S is disposed corresponding to the back surface of the sound emitting unit 25, and in this state, first, as shown by a virtual line in FIG. The two adjacent cut-in portions s2 of the blindfold sheet S are made to correspond to the two adjacent insert pieces 31 without 31a, the respective insert pieces 31 are inserted into the respective cut-out portions s2, and the remaining cut-out portion s2 side bulge portion The s1 is pushed down while being pulled by the finger F, and the insertion piece 31 having the protruding piece 31a is inserted into the cut portion s2 (see the solid line in FIG. 4A). Thereafter, when the finger F is separated from the bulging portion s1, the bulging portion s1 released from the tensile force contracts, and as shown in FIG. It is in a state of biting into the vicinity of the cut portion s2 of the bulging portion s1 so as to push it wide. As a result, as shown in FIGS. 3 and 4B, the projection 31a of the insertion piece 31 pushes the periphery of the cut portion s2 of the blindfold sheet S toward the back side of the panel body 17, and the blindfold sheet S is in a tensioned state. It is attached to the back surface (annular rib 27) of the main body 17 so as to cover the bulging portion s1.

  Thus, in the speaker grill 13 according to the embodiment, the three insertion pieces 31 formed on the back surface of the panel body 17 are respectively inserted into the three cut portions s2 of the blindfold sheet S, whereby the blindfold sheet S is placed in the panel body 17. Since the sound emission part 25 is covered by attaching to the back surface, the attachment work of the blindfold sheet S can be performed easily.

  In addition, with the blindfold sheet S attached to the back surface of the panel body 17, the projection 31 a formed at the protruding end of the insertion piece 31 pushes the periphery of the cut portion s 2 of the blindfold sheet S toward the back surface side of the panel body 17. Therefore, the blindfold sheet S can be made difficult to come off from the panel body 17.

  Further, with the blindfold sheet S attached to the back surface of the panel body 17, the outer peripheral portion of the blindfold sheet S is brought into contact with the rib protruding end of the annular rib 27 and pulled toward the back surface side of the panel body 17, The blindfold sheet S can be attached to the sound emitting unit 25 in a tensioned state, and the separation from the panel body 17 can be reliably prevented.

  In the above embodiment, the three insertion pieces 31 protrude from the back surface of the panel body 17, but the number of insertion pieces 31 may be four or more.

  In the above embodiment, the insertion piece 31 protrudes from the outer surface of the side wall of the annular rib 27. However, the annular rib 27 is eliminated, and the inverted L-shaped projection around the sound emitting portion 25 has a tip at the sound emitting portion 25. The insertion piece 31 may be formed by projecting so as to face the outer side of the projection and the tip of the projection.

  Further, in the above-described embodiment, the protruding piece 31a is protruded from only one insertion piece 31 of the three insertion pieces 31, but the protruding pieces 31a may be protruded from the two insertion pieces 31 or all of them. A protruding piece 31 a may be provided on the insertion piece 31. Even when four or more insertion pieces 31 are provided, the protruding pieces 31a may be provided so as to protrude from all the inserting pieces 31, or the protruding pieces 31a may be provided so as to exclude some of the insertion pieces 31.

  Furthermore, in the above-described embodiment, the case where the speaker grill 13 is applied to the instrument panel main body 1 of the vehicle is shown, but the present invention can also be applied to a door trim or the like.

  The present invention is useful for a speaker grill in which a sound emitting part in which a large number of through holes are gathered is covered with a blindfold sheet from the back side.

13 Speaker grill 17 Panel body 25 Sound emitting part 25a Through hole 27 Annular rib 31 Insertion piece 31a Projection piece S Blindfold sheet s2 Cut part

Claims (3)

A panel body (17) having a sound emitting part (25) in which a large number of through holes (25a) are assembled;
A speaker grille provided with a blindfold sheet (S) attached to the back surface of the panel body (17) so as to cover the sound emitting part (25),
On the back surface of the panel body (17), at least three insertion pieces (31) leave a gap with the back surface of the panel body (17), and the front end faces the outside of the sound emitting section (25). Projected to surround the sound emission part (25),
The blindfold sheet (S) is formed with a cut portion (s2) corresponding to the insertion piece (31),
The blindfold sheet (S) is arranged in correspondence with the back surface of the sound emitting portion (25), and the back surface of the panel body (17) is inserted by inserting the insertion piece (31) into the cut portion (s2). The speaker grille characterized by being attached to. The speaker grill according to claim 1, wherein
A speaker grille characterized in that a projecting end (31a) is projected from the projecting end of at least one insertion piece (31) of the insertion piece (31) toward the back side of the panel body (17). . The speaker grill according to claim 1 or 2,
On the back surface of the panel body (17), an annular rib (27) is provided so as to surround the sound emitting part (25) in an annular shape,
The speaker grill according to claim 1, wherein the insertion piece (31) is formed near the rib protruding end of the outer side wall of the annular rib (27).

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