JP2002323017A - Setting structure of elongated member for panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent abnormal sound such as rubbing noise from occurring when attaching an elongated member to a panel even if vibration is applied to the panel. SOLUTION: Members are installed to the panel at a plurality of positions in the longitudinal direction so that an elongated peripheral face 22 formed at least at one edge of the elongated member 20 comes in contact with the surface of the panel 10. The peripheral face is formed of a contact face 22a of an outer surface 20a side and a retreating face 22b in the rear thereof. The contact face is brought in contact with the surface of the panel and tips of a number of projections 23 formed at the retreating face apart from the panel in the longitudinal direction are strongly and locally brought in contact with the panel surface. A recess part 15, of which the internal wall face 15a having a draft angle is formed along the periphery, is formed of the panel, and the contacting face and a number of projections are preferably in contact with the inner wall side. The abnormal sound is prevented from being produced by changing a natural frequency by adjusting the pitch of the projection.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting an elongated member to a panel, and more particularly to a structure for preventing generation of abnormal noise when vibration is applied to the panel.

[0002]

2. Description of the Related Art Panels for car door trims and the like include:
For example, as shown in FIG. 1, there is one in which an ornament member 1 having an elongated decorative plate portion 2 having a wood grain pattern or the like on its outer surface is attached, and its AA cross section is as shown in, for example, FIG. The door trim 10 is obtained by covering the surface of a rigid base material 11 with a soft skin 12 composed of a surface layer 12a and a back surface layer 12b, and has a concave portion 15 at a portion where the ornament member 1 is attached. The ornament member 1 comprises a decorative plate portion 2 and a plurality of elongated mounting projections 4 formed protruding from the back surface thereof. The outer surface 3 formed along the longitudinal direction on the upper side of the decorative plate portion 2 is formed on the inner wall surface above the concave portion 15. 15 a, and the tip of each tapping screw 29 inserted from the back side of the door trim 10 through the hole 19 provided in the bottom 15 b of the recess 15 is screwed into a pilot hole provided at the center of each mounting projection 4, and the bottom of the recess 15 is formed. 15b, it is attached to the door trim 10.

[0003]

In such a mounting structure, the ornament member 1 is mounted on the door trim 10 at the plurality of mounting protrusions 4, but the outer surface 3 of the decorative plate portion 2 and the inner side of the recess 15 are provided. The walls 15a are only pressed against each other, and the frictional force acting between them is not necessarily large. Therefore, such a door trim 1
0, when vibrations from various vibration sources are applied, such as vibrations of an automobile engine, vibrations from a road surface via a suspension device, and vibrations of a speaker of an attached audio device, the ornament member 1 has a joint. A natural vibration occurs in which the interval between the nodes is shorter than the pitch of the mounting projections 4. When the frequency of the natural vibration approaches the frequency from the vibration source, a resonance phenomenon occurs, and the amplitude of the vibration of the ornament member 1 increases. And the inner wall surface 15a of the recess 15 causes a problem that abnormal noise (scraping sound, creaking sound) is generated.

On the other hand, in the prior art, as shown in FIG. 7, a non-woven fabric tape 5 is attached to the outer surface 3 of the decorative plate portion 2 which comes into contact with the inner wall surface 15a, and the door trim 10 and the decorative plate portion 2 at the contact surface. Of the interior of the concave portion 15 by absorbing the slippage between the inner and outer surfaces of the concave portion 15 by absorbing the slippage of the soft nonwoven fabric tape 5 by bending or by applying an anti-noise agent that reduces the friction coefficient to the outer surface 3 of the decorative plate portion 2.
a to prevent noise from occurring even if slippage occurs between them, or to provide a gap so that the outer surface 3 of the decorative plate portion 2 and the inner wall surface 15a of the concave portion 15 do not contact each other. Abnormal noise was prevented. However, since the nonwoven fabric tape 5 is applied to the narrow and elongated portion of the outer surface 3 of the decorative plate portion 2, the workability is poor, and in some cases, the nonwoven fabric tape 5 protrudes from the surface of the door trim 10 on the interior side of the vehicle and is exposed to the outside. May be impaired. Further, the effect of the noise control agent is not always sufficient. In addition, installation of the gap not only lowers the appearance, but it is difficult to provide such a gap when the shape of the ornament member 20 is complicated. An object of the present invention is to solve each of these problems.

[0005]

According to the present invention, there is provided a structure for attaching an elongated member to a panel according to the present invention, wherein an elongated peripheral surface formed along the longitudinal direction of at least one side edge of the elongated member abuts on the surface of the panel. As described above, in the mounting structure of the elongated member to the panel to attach the member to the panel at a plurality of locations in the longitudinal direction by the attachment element,
The contact surface, which is a part of the peripheral surface and forms a portion along the outer surface side of the member, is brought into contact with the surface of the panel, and the panel of the panel is moved along the portion which is deeper than the contact surface of the peripheral surface. A large number of projections which are locally in strong contact with the surface are formed at a pitch shorter than the interval between the mounting elements.

In the structure for attaching an elongated member to a panel according to the invention of the preceding paragraph, the panel is made of a rigid base material and a soft skin that covers the surface and forms the surface side of the panel. It is preferable that the epidermis be deformed so as to bite into the epidermis.

The structure for attaching an elongated member to a panel according to the second aspect of the present invention is such that the peripheral surface comprises a contact surface and a receding surface which is located deeper than the contact surface and forms a gap between the surface of the panel. It is preferable that a large number of protrusions are formed on the receding surface.

[0008] In the mounting structure of the elongated member to the panel according to the invention of the preceding claims, the panel has a concave portion in which an inner wall surface having a draft is provided along at least one side of a peripheral portion, and the member is formed by a mounting element. It has an elongated plate-shaped portion attached to the bottom of the concave portion, and the peripheral surface is formed by at least one outer surface along the longitudinal direction of the plate-shaped portion. It shall be in contact with the surface of the same inner wall surface with a corresponding inclination angle, and a number of projections are formed in a slender shape on a surface deeper than the contact surface in a direction perpendicular to the longitudinal direction. Is preferred.

In the attachment structure for an elongated member to a panel according to the invention described in the preceding paragraph, the concave portion has an elongated shape corresponding to the plate-shaped portion of the member, and the inner wall surface is formed along both sides in the longitudinal direction, and the plate-shaped portion has It is preferable that the contact surfaces of the respective outer surfaces formed along both sides in the longitudinal direction have an inclination angle corresponding to the draft of the inner wall surface and be in contact with the surfaces of the respective inner wall surfaces.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an attachment structure of an elongated member to a panel according to the present invention will be described with reference to a first embodiment shown in FIGS. In this embodiment, the present invention is applied to attachment of an ornament member (member) 20 to a door trim (panel) 10 of an automobile.

As shown in FIGS. 1 and 2, the door trim 10 is provided with an ornament member 20 having a horizontally elongated decorative plate portion (plate portion) 21 having an outer surface 20a with a grain pattern or the like. I have. The door trim 10 comprises an upper half 10a and a lower half 10b.
a and 10b are joined together by a plurality of staples 13 by joining the respective flange portions 10c formed at the joining edges, and both are connected to the surface of the rigid base material 11 by the flexible skin 1.
2 is covered by bonding or the like. At the center of the panel 10, a concave portion 15 extending over the upper half portion 10a and the lower half portion 10b is formed.
An ornament member 20 is attached to a portion corresponding to the armrest 1 and a laterally extending armrest 1
6 are provided. An inner wall surface 15a having a draft is formed along the upper edge of the concave portion 15 inside the upper half portion 10a, and a plurality of holes 19 penetrating the door trim 10 are formed on the bottom portion 15b of the concave portion 15 along the inner wall surface 15a. Thus, it is formed at the same pitch as a mounting projection 25 of an ornament member 20 described later.

In this embodiment, the base material 11 of the upper half portion 10a and the lower half portion 10b is made of a wood chip or a material obtained by disintegrating wood into fibrous material, and a thermosetting resin such as phenol resin as a binder. A resin is added and mixed and hot-pressed to make it porous.However, kenaf and other vegetation are defibrated into fibrous form, and a thermoplastic resin such as polypropylene is added as a binder and molded. May be used, or may be formed using only a synthetic resin. The skin 12 is formed by laminating and bonding a back surface layer 12b made of a sheet-like synthetic resin foam with high elasticity to the back surface of a soft and dense thin thermoplastic resin surface layer 12a. What consists only of a plastic resin sheet may be sufficient. .

As shown in FIGS. 2 to 4, the ornament member 20 is formed by integrally molding a decorative plate portion 21 and a plurality of mounting protrusions 25 projecting at right angles from the center in the width direction on the back side thereof. A pilot hole (not shown) for screwing a later-described tapping screw 29 is formed at the center of the mounting projection 25 formed in the longitudinal direction corresponding to the hole 19 formed in the concave portion 15. Ornament member 20
Is 800 mm, for example, and the pitch of the mounting projections 25 is 150 mm, for example. A flange 21 a having a substantially triangular shape and a substantially constant cross-sectional shape is formed on the upper edge of the decorative plate portion 21, and the outside of the flange 21 a forms an outer surface (peripheral surface) 22 of the decorative plate portion 21. The outer side surface 22 includes a contact surface 22a that forms a portion along the outer surface 20a side of the ornament member 20, and a stepped-down receding surface 22b that is located deeper than the contact surface 22a. A plurality of protrusions 23 are formed on the receding surface 22b along the longitudinal direction. The contact surface 22a is the inner wall surface 1 of the upper edge of the concave portion 15.
It has an inclination angle corresponding to the draft angle of 5a, and can contact the surface of the inner wall surface 15a. The protrusions 23 are, for example, 1 mm in width and 5 mm in length, and the receding surfaces 22 b are spaced at 25 mm intervals.
Are arranged in the longitudinal direction, and the direction of the protrusion 23 is orthogonal to the longitudinal direction of the receding surface 22b.

As shown in FIGS. 2 and 3, the ornament member 20 is formed such that each mounting projection 25 is formed on the bottom 1 of the recess 15.
5b is aligned with each hole 19 provided, and the tapping screw 29 inserted from each hole 19 is screwed into a prepared hole at the center of each mounting projection 25, thereby being attached to the door trim 10. In this mounting state, the contact surface 22a of the outer surface 22 contacts the inner wall surface 15a, which is the surface of the door trim 10, and the retreat surface 2
A gap is formed between 2b and the inner wall surface 15a, and the tip of each projection 23 deforms the skin 12 of the door trim 10 and cuts into the skin 12 by about 0.5 to 0.9 mm.

When the ornament member 20 is attached to the door trim 10 as described above, the contact surface 22a formed on the outer surface 22 along the outer surface 20a of the ornament member 20 is in contact with the surface of the door trim 10. Since there is no gap between the door trim 10 and the ornament member 20, an excellent appearance can be obtained. The projections 23 formed at a pitch shorter than the interval between the mounting projections 25 on the retreating surface 22b on the back side of the abutment surface 22a of the outer side surface 22 of the ornament member 20 are provided on the surface 1 of the door trim 10.
2 is deformed and bites into the skin 12, so that the natural frequency of the elongated ornament member 20 is increased. This natural frequency should be higher as the pitch of the projections 23 is shortened.
Since the local abutment force of the tip of No. 3 on the door trim 10 is reduced, the effect of increasing the natural frequency is reduced. Therefore, one of the guidelines for adjusting the pitch of the protrusions 23 so as not to generate abnormal noise is to set the natural frequency of the ornament member 20 to the range of the frequency of various vibration sources such as a car engine, a road surface, and a speaker of an audio device. Is to make it higher. However, as the natural frequency increases, the amplitude of the ornament member 20 decreases. Therefore, if the amplitude of the vibration is reduced to such an extent that no slippage occurs between the contact surface 22a of the ornament member 20 and the inner wall surface 15a of the concave portion 15 by increasing the natural frequency, the natural frequency of the ornament member 20 can be reduced. However, since the effect of preventing abnormal noise can be obtained even when the frequency is within the range of the frequencies of the various vibration sources, the natural frequency may be adjusted accordingly.

In this embodiment, the door trim 10 is configured such that the surface of the base material 11 is covered with a skin 12 composed of a surface layer 12a and a back layer 12b, and the tip of the projection 23 is cut into the skin 12. Thereby, the door trim 10
, The local abutment force of the projection 23 of the ornament member 20 with respect to the natural frequency and amplitude can be reliably adjusted, and the generation of abnormal noise can be more reliably prevented. .

In this embodiment, the door trim 10
Inner wall surface 1 having a draft along the upper edge of recess 15
5a, the ornament member 20 has an outer surface 22, which is an upper edge of an elongated decorative plate portion 21, in contact with the inner wall surface 15a, and a number of projections 23 formed on the outer surface 22 in a direction perpendicular to the longitudinal direction thereof. Because it is biting into 12,
When the ornament member 20 is attached to the door trim 10, each of the projections 23 is unlikely to be a resistance, and the ornament member 20 with respect to the inner wall surface 15a having a draft angle.
The contact force of the outer side surface 22 of the inner wall surface 15a is large.
Since the local contact coupling force of the projection 23 with respect to
The above-described adjustment of the natural frequency and the amplitude can be reliably performed. Therefore, it is easy to mount and the noise prevention effect is further enhanced.

Further, in this embodiment, the outer surface 22 is constituted by a contact surface 22a and a retreat surface 22b which is located further back than the contact surface 22a and has a gap formed between the outer surface 22 and the surface of the panel 10. Since the protrusion 23 is formed on the receding surface 22b, the protrusion 23 bites into the door trim 1 near the protrusion.
Even if the 0 skin 12 is deformed, the deformation does not reach the skin 12 where the contact surface 22a is in contact. Therefore, there is no possibility that a gap is generated between the skin 12 and the contact surface 22a due to such a deformation and the appearance is deteriorated. According to this embodiment, since there is no need to attach or apply another member, it is possible to reduce the number of parts and the labor of the operation, thereby lowering the manufacturing cost.

Next, a second embodiment shown in FIG. 5 will be described. The concave portion 15 of the second embodiment has a horizontally elongated shape corresponding to the ornament member 20, and inner wall surfaces 15a formed on both sides of the concave portion 15 are opposed to each other.
Each has a draft. The depth of the concave portion 15 is substantially constant, and a plurality of holes 19 penetrating the door trim 10 are formed at a predetermined pitch along the longitudinal direction at a central portion in the width direction of the bottom surface 15b. The door trim 10 has a base material 11 covered with a skin 12 composed of a surface layer 12a and a back surface layer 12b, as in the first embodiment.

The ornament member 20 is formed by integrally molding a decorative plate portion 21 and a plurality of elongated mounting projections 25A projecting at right angles from the center in the width direction on the back side of the decorative plate portion 21 with synthetic resin. The mounting projections 25A are formed in the longitudinal direction at the same pitch as the holes 19 formed in the concave portion 15. On the upper and lower side edges of the decorative plate portion 21,
A flange 21a having a substantially triangular shape and a substantially constant cross-sectional shape similar to that of the first embodiment is formed, and the outside of the flange 21a forms an outer surface 22 of the decorative plate portion 21. As in the first embodiment, the outer surface 22 includes an abutting surface 22a on the outer surface 20a side of the ornament member 20 and a stepped-down receding surface 22b located on the inner side. Thus, a large number of projections 23 are formed on the receding surface 22b. Each contact surface 22a is formed on each inner wall surface 15a of the concave portion 15.
Having an inclination angle corresponding to the draft angle of the inner wall surface 1
5a can be brought into contact with the surface.

In this ornament member 20, the tip of each mounting projection 25A is inserted into each of the holes 19 formed in the bottom 15b of the recess 15, and the tip of each projection 23 is inserted into the surface 12 of the inner wall surface 15a of the recess 15. Is deformed and bites into the skin 12, and is pushed into the recess 15 until each contact surface 22a contacts the surface of each inner wall surface 15a. Then, the chrysanthemum washer (mounting element) 29 is fixed to the base material 1 such that the plurality of inward projections 29a are locked to the tip of the mounting projection 25A.
The ornament member 20 is attached to the door trim 10 by pushing it in until it comes into contact with the back surface of the door trim 1.

In this mounted state, the ornament member 20
Abuts against the surface of the door trim 10, and the projection 23 cuts into the skin 12 on the surface of the door trim 10, so that similar effects as those of the first embodiment can be obtained. Can be In the second embodiment, each outer side surface 2 on both sides in the longitudinal direction of the ornament member 20 is provided.
Since the reaction forces generated by the contact or biting of the projections 23 formed on the panel 10 with each other are balanced with each other,
Even if such contact or biting force is increased, the member 2
No force is added to zero. Therefore, such an abutment or biting force can be increased to further increase the noise prevention effect.

In each of the above embodiments, the mounting member 25 is attached to the door trim 10 by using the mounting projection 25 integrally formed with the decorative plate 21 and a tapping screw or a chrysant washer. A male screw may be formed at the tip, and a nut may be screwed in as the mounting element 29 instead of a chrysanthemum washer.

In each of the above-described embodiments, the ornament member 20 is mounted in the recess 15 formed in the door trim 10, but the present invention is not limited to this, and the elongated member may be mounted on a flat panel having no recess. Can be widely applied to.

[0025]

As described above, according to the structure for attaching an elongated member to a panel according to the present invention, the contact surface, which is a part of the peripheral surface and extends along the outer surface of the member, is formed on the panel. Since it is in contact with the surface and there is no gap between the panel and the member, an excellent appearance can be obtained. In addition, since a large number of projections that are locally in strong contact with the panel surface are formed deeper than the contact surface of the peripheral surface of the member, the natural frequency of the elongated member can be increased, and this pitch can be adjusted. By increasing the natural frequency of the member to a value higher than the frequency range of the various vibration sources, or by reducing the amplitude of the vibration to such an extent that no slippage occurs between the contact surface of the member and the inner wall surface of the recess, Even when vibration is applied to the panel from the vibration source, it is possible to prevent the occurrence of abnormal noise due to slippage between the panel and the member. Further, since there is no need to attach or apply a separate member, the number of parts and the labor of the operation can be reduced, and the manufacturing cost can be reduced.

In the attachment structure for an elongated member to a panel according to the preceding invention, the panel is made of a rigid base material and a soft skin covering the surface, and the tip of the projection is cut into the skin. According to this, since the local contact coupling force of the projection of the member with respect to the panel is increased, the above-described adjustment of the natural frequency and the amplitude can be reliably performed, and the occurrence of abnormal noise can be more reliably prevented. Can be.

In the structure for attaching an elongated member to a panel according to the second aspect of the present invention, the peripheral surface 22 is formed of a contact surface and a receding surface which is located deeper than the contact surface to form a gap between the surface of the panel. According to the number of protrusions formed on the receding surface, even if the surface of the panel in the vicinity thereof is deformed due to the contact or biting of the protrusion of the member, the panel to which the contact surface of the member abuts Since the deformation does not reach the surface of the panel, there is no danger that such a deformation will cause a gap in the gap between the panel and the member to deteriorate the appearance.

In the structure for attaching an elongated member to a panel according to the preceding three aspects, the panel has a recessed inner wall surface formed along at least one side of a peripheral portion, and the member is formed by an attachment element. It has an elongated plate-like portion attached to the bottom of the recess and forms the peripheral surface with at least one outer surface along the longitudinal direction of the plate-like portion. With a corresponding inclination angle, it was made to be in contact with the surface of the same inner wall surface, and a number of protrusions were formed in an elongated shape on a surface deeper than the contact surface in a direction perpendicular to the longitudinal direction. According to this, when the member is attached to the panel, each projection rarely becomes a resistance, and the contact force of the outer surface of the member against the inner wall surface of the recess becomes large, and the protrusion of the member against the panel becomes large. Since part specifically contact bonding force becomes stronger, it is possible to reliably the natural frequency and amplitude adjustment of the above. Therefore, the member can be easily attached to the panel, and the effect of preventing abnormal noise is further enhanced.

In the attachment structure for an elongated member to a panel according to the preceding invention, the concave portion has an elongated shape corresponding to the plate-like portion of the member, and the inner wall surface is formed along both sides in the longitudinal direction thereof, and the plate-like portion has the same shape. According to the configuration in which the contact surface of each outer surface formed along both sides in the longitudinal direction has an inclination angle corresponding to the draft of the inner wall surface and is in contact with the surface of each inner wall surface, The reaction forces generated by abutment or biting of the projections formed on the outer surfaces on both sides in the longitudinal direction of the member with respect to the panel are balanced with each other. Therefore, even if such contact or biting force is strengthened, the member will not be distorted due to excessive force, so that such contact or biting force should be increased to further enhance the noise prevention effect. Can be.

[Brief description of the drawings]

FIG. 1 is a front view of a door trim to which an ornament member is attached according to a first embodiment of a structure for attaching an elongated member to a panel according to the present invention.

FIG. 2 is a partially enlarged sectional view taken along line AA of FIG.

FIG. 3 is a partially enlarged cross-sectional view showing a joint between a panel and an elongated member attached thereto in FIG. 2;

FIG. 4 is a plan view showing a peripheral surface of an elongated member.

FIG. 5 is a partially enlarged sectional view corresponding to FIG. 2 of a door trim to which an ornament member is attached according to a second embodiment of the attachment structure of the elongated member to the panel according to the present invention.

FIG. 6 is a cross-sectional view corresponding to FIG. 2, showing an example of a mounting structure of an elongated member to a panel according to the related art.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... panel (door trim), 11 ... base material, 12 ... skin, 15 ... recessed part, 15a ... inner wall surface, 15b ... bottom part, 2
0: member (ornament member), 20a: outer surface, 21
... plate-shaped portion (decorative plate portion), 22 ... peripheral surface (outer surface), 22
a: contact surface, 22b: receding surface, 23: protrusion, 29: mounting element (tapping screw, chrysanthemum washer).

Claims (5)

[Claims] 1. An elongate member is attached to the panel by mounting elements at a plurality of longitudinal positions thereof such that an elongate peripheral surface formed along the longitudinal direction of at least one side edge of the elongate member abuts the surface of the panel. In the attachment structure of the elongated member to the panel to be attached, a contact surface that is a part of the peripheral surface and forms a portion along the outer surface side of the member is brought into contact with the surface of the panel, and the peripheral surface is A plurality of projections which are locally strongly in contact with the surface of the panel along a portion deeper than the abutment surface and are formed at a pitch shorter than a distance between the attachment elements; Construction. 2. The mounting structure of an elongated member to a panel according to claim 1, wherein the panel comprises a rigid base material and a soft skin covering the surface and forming a surface side of the panel. Characterized in that the distal end portion of the panel is deformed into the skin and bites into the skin. 3. The mounting structure of an elongated member to a panel according to claim 1, wherein the peripheral surface is a gap between the contact surface and a surface of the panel located further back than the contact surface. Wherein the plurality of projections are formed on the receding surface, wherein the elongated member is attached to the panel. 4. The mounting structure for an elongated member to a panel according to claim 1, wherein the panel has an inner wall surface having a draft angle along at least one side of a peripheral portion. Forming a recessed portion, the member having an elongated plate-shaped portion attached to the bottom of the recessed portion by the mounting element, and forming the peripheral surface by at least one outer surface along a longitudinal direction of the plate-shaped portion. The contact surface of the outer surface has an inclination angle corresponding to a draft angle of the inner wall surface and is brought into contact with the surface of the inner wall surface. A structure for attaching an elongated member to a panel, wherein the member is formed on a surface deeper than a contact surface in a direction orthogonal to a longitudinal direction thereof. 5. The mounting structure of an elongated member to a panel according to claim 4, wherein the recess has an elongated shape corresponding to a plate-like portion of the member, and the inner wall surface is formed along both sides in the longitudinal direction. The plate-shaped portion has a contact surface of each of the outer surfaces formed along both sides in the longitudinal direction of the plate-shaped portion having an inclination angle corresponding to a draft angle of the inner wall surface and contacting the surface of each of the inner wall surfaces. A structure for attaching an elongated member to a panel, the structure being configured to be in contact with the panel.