JP2004345464A - Fixing structure of cushion pad for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixing structure of a cushion pad for a vehicle having recycling efficiency of the cushion pad and having an impact absorbing function in a wide range of a trim surface. <P>SOLUTION: In this fixing structure 30 of the cushion pad for the vehicle, a fitting part 35 is formed on a fitting protrusion 31 integrally and vertically provided on a door panel side of a door trim 2, and a fitting piece 61 whereon a fitting receiving part 62 is formed is fixed so as to protrude to a radial direction inner side of a fitting hole 42 of the cushion pad 41. The fitting protrusion 31 is inserted into the fitting hole 42, the fitting part 35 and the fitting receiving part 62 are fitted, and the cushion pad 41 is attached in such a manner that the cushion pad 41 is prevented from falling out of the door trim 2. A tip of the fitting hole 42 is closed by a closing part 46 of the cushion pad 41, and thereby the range of the surface of the trim 2 wherein the fitting protrusion 31 is provided can absorb the impact. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cushion pad fixing structure of a vehicle for fixing a shock absorbing cushion pad to a trim disposed in a vehicle interior.
[0002]
[Prior art]
The present invention relates to a structure for fixing a cushion pad of a vehicle, in which a locking projection is formed on the back surface of a door trim, and the locking projection is inserted into a locking hole formed in the cushion pad and engaged with each other, thereby connecting the cushion pad to the back surface of the door trim. (See, for example, Patent Document 1).
[0003]
[Patent Document 1]
JP 2003-81021 A (FIG. 3)
[0004]
[Problems to be solved by the invention]
In the above-described conventional structure for fixing a cushion pad of a vehicle, the engagement between the locking projection and the locking hole can be easily released by separating the cushion pad from the door trim when the vehicle is disassembled. The cushion pad was excellent in recyclability. However, the portion where the locking projection of the door trim is formed is not provided with a cushion pad, and the portion does not have a function of absorbing the impact of the vehicle.
[0005]
SUMMARY OF THE INVENTION The present invention has been completed based on the circumstances described above, and provides a cushion pad fixing structure for a vehicle having a cushion pad recyclability and a shock absorbing function over a wide area of a trim surface. The purpose is to do.
[0006]
[Means for Solving the Problems]
As means for achieving the above object, the invention of claim 1 is characterized in that an engaging projection formed with a locking portion is erected on the back surface of a trim provided in a vehicle compartment, and the impact of the vehicle is improved. A cushion-shaped engagement hole, in which the engagement protrusion is inserted into the cushion pad for absorbing the oil and the tip into which the engagement protrusion is inserted is closed by the cushion pad, is formed. An engagement receiving portion that engages with the engaging portion is formed in the engagement hole, and the engagement protrusion is inserted into the engagement hole, and the inside of the engagement protrusion and the engagement receiving portion is formed. Fixing the cushion pad to the back surface of the trim by bending at least one of the engaging portions and engaging the engaging portion and the engaging receiving portion with each other. Structured.
[0007]
The invention according to claim 2 is characterized in that the locking receiving portion is formed on a locking piece mounted on the cushion pad so as to protrude radially inward of the engaging hole, and the engaging projection is formed on the engaging hole. By inserting at least one of the engaging protrusion and the locking piece to engage the locking portion and the locking receiving portion with each other. 2. The cushion pad according to claim 1, wherein the cushion pad is fixed to a rear surface of the trim so that an engagement force between the locking portion and the locking receiving portion is larger than an engagement force with a stop piece. 3. The structure is such that the cushion pad of the vehicle is fixed.
[0008]
The invention according to claim 3 is the vehicle cushion pad fixing structure according to claim 2, wherein the locking piece is fixed to the cushion pad by insert molding when the cushion pad is molded.
[0009]
Function and effect of the present invention
<Invention of claim 1>
The tip of the engagement hole into which the engagement protrusion is inserted is formed into a bag-like shape closed by a cushion pad capable of absorbing the impact of the vehicle. Can also absorb shocks, and can have a shock absorbing function over a wide area of the trim surface.
[0010]
<Invention of Claim 2>
By inserting the engagement protrusion into the engagement hole, bending at least one of the engagement protrusion and the locking piece, and engaging the locking portion and the locking receiving portion with each other, The cushion pad is fixed to the rear surface of the trim so that the engagement force between the engagement portion and the engagement receiving portion is greater than the engagement force between the cushion pad and the engagement piece. Can be easily separated from the locking pieces, and the recyclability of the cushion pad can be maintained. In addition, since the cushion pad engages with the engagement protrusion via the locking piece, wear due to relative movement of the cushion pad with respect to the engagement protrusion can be reduced.
[0011]
<Invention of Claim 3>
The locking piece is fixed to the cushion pad by insert molding at the time of forming the cushion pad, so that there is no need to provide a special step of attaching the locking piece to the cushion pad, and the time and effort of manufacturing the cushion pad are reduced. Time can be reduced.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
<First embodiment>
A first embodiment of the present invention will be described with reference to FIGS. A door trim 2 is disposed on the indoor side of the vehicle door 1 shown in FIG. The door trim 2 is formed of a synthetic resin material such as polypropylene, and is composed of an upper trim 3, a center trim 4 and a lower trim 5 arranged from above.
[0013]
As shown in FIG. 2, a plurality of tightening holes 3 a are formed at the lower end of the upper trim 3, while the boss 4 a formed at the upper end of the center trim 4 is attached to the vehicle door 1. In the state, a plurality of fastening pins 4b are also provided upright facing a door panel side (left side in FIG. 2) not shown. Before attaching to the door 1, the tightening pin 4b of the center trim 4 is inserted into the tightening hole 3a of the upper trim 3, and the tip of the tightening pin 4b is swaged from the door panel side, so that the upper trim 3 and the center trim 4 Concatenate.
[0014]
A plurality of tightening holes 4c are formed at the lower end of the center trim 4, while a plurality of tightening pins 5b facing the door panel side are formed at a boss 5a formed at the upper end of the lower trim 5. It is erected. Before attaching to the door 1, the fastening pin 5b of the lower trim 5 is inserted into the fastening hole 4c of the center trim 4, and the tip of the fastening pin 5b is swaged from the door panel side, so that the center trim 4 and the lower trim 5 are connected to each other. Concatenate.
[0015]
A plurality of engaging projections 11 are integrally formed on the surface (corresponding to the rear surface of the trim of the present invention) facing the door panel in a state where the center trim 4 and the lower trim 5 are attached to the respective vehicle doors 1. , The cushion pad 21 is fixed to the door panel side of the door trim 2. The cushion pad 21 is for absorbing the shock in the event of a side collision of the vehicle. Generally, a semi-rigid urethane foam or PP (polypropylene) foam is frequently used, but the cushion pad 21 can absorb the shock applied to the vehicle. The material is not particularly limited as long as it can be bent so as to be attached to the door trim 2.
[0016]
Hereinafter, the fixing structure 10 for fixing the cushion pad 21 to the door trim 2 will be described in detail with reference to FIG. An engagement protrusion 11 erected on the back surface (left side surface in FIG. 3) of the center trim 4 or the lower trim 5 constituting the door trim 2 includes a cylindrical shaft portion 12 integrally formed with the door trim 2 and a shaft portion. 12 and a head 13 formed at the tip end. The outer peripheral surface of the head 13 is formed in a perfect circular shape, the outer diameter of the head 13 is much larger than that of the shaft 12, and the left end of the head 13 is inserted into the engagement hole 22 of the cushion pad 21. A tapered surface 14 is provided for ease of use. In the drawing of the head 13, the right end face is a locking portion 15 which engages with a locking receiving portion 25 of the cushion pad 21 described later.
[0017]
The cushion pad 21 has an engagement hole 22 into which the engagement protrusion 11 is inserted. The engagement hole 22 has a cylindrical connection hole 23 that fits with the shaft portion 12 of the engagement protrusion 11, and has a capacity such that the head 13 of the engagement protrusion 11 is housed at the tip of the connection hole 23. Is formed by the accommodating part 24 formed large. The right end face in the drawing of the housing portion 24 is the locking receiving portion 25 that engages with the locking portion 15 of the engaging projection 11 as described above. As shown in FIG. 3, the engaging hole 22 has a bag-like shape in which the tip is closed by the closing portion 26 of the cushion pad 21, and the portion where the engaging hole 22 is formed is also from the left in the figure. The shock can be absorbed.
[0018]
In the present embodiment, when the cushion pad 21 is mounted on the door trim 2, the engagement protrusion 11 of the door trim 2 is inserted into the engagement hole 22 of the cushion pad 21. At this time, the connection hole 23 of the cushion pad 21 and the lock receiving portion 25 are bent and expanded, so that the head 13 of the engaging projection 11 passes through the connection hole 23 of the engagement hole 22 and the lock receiving portion 25. can do. When the head 13 completely passes through the connection hole 23 and the lock receiving portion 25, the head 13 is stored in the storage portion 24, and the engagement between the locking portion 15 of the engagement protrusion 11 and the engagement hole 22 is achieved. The cushion pad 21 is fixed to the rear surface of the door trim 2 by engaging with the stopper portion 25, and the cushion pad 21 is prevented from being removed from the door trim 2.
[0019]
When the vehicle is dismantled or the like, the cushion pad 21 is pulled to the left in FIG. 3 so that the connection holes 23 and the lock receiving portions 25 of the cushion pad 21 are expanded, so that the locking portions 15 and 25 Is disengaged, the connection hole 23 and the lock receiving portion 25 get over the head 13 of the engagement projection 11, and the cushion pad 21 can be easily separated from the door trim 2.
[0020]
In the cushion pad fixing structure 10 according to the above-described embodiment, the cushion pad 21 can be easily separated from the door trim 2 when the vehicle is disassembled, and the recyclability of the cushion pad 21 can be maintained. The tip of the engagement hole 22 into which the engagement protrusion 11 is inserted is formed into a bag-like shape closed by a closing portion 26 formed by a cushion pad 21 capable of absorbing the impact of the vehicle. It is also possible to absorb a shock applied to a portion where the engagement protrusion 11 is inserted into the engagement portion 22, and to have a function of absorbing a shock over a wide range of the surface of the door trim 2.
[0021]
<Second embodiment>
Next, a cushion pad fixing structure 30 according to a second embodiment of the present invention will be described with reference to FIG. 4, focusing on differences from the first embodiment. The engagement projection 31 erected integrally with the door trim 2 has a slit 36 at the center thereof. As shown in the figure, the slit 36 is vertically divided into two parts across the engagement protrusion 31 so that the engagement protrusion 31 can bend inward in the radial direction. The engagement protrusion 31 includes a cylindrical shaft portion 32 formed integrally with the door trim 2 and a head portion 33 formed at the tip of the shaft portion 32. The head 33 has a pair of protruding portions 33 a protruding radially outward from the outer peripheral surface of the shaft portion 32 at only two locations on the circumference with the slit 36 interposed therebetween. In the drawing of the protruding portion 33a, a slope 34 is formed at the left end, and a locking portion 35 that engages with a locking receiving portion 62 of a locking piece 61 described later is formed at the right end.
[0022]
On the other hand, in the cushion pad 41, a disc-shaped mounting hole 45 is formed between the connection hole 43 of the engaging hole 42 and the accommodating portion 44, and a locking piece 61 is provided in the mounting hole 45 and the engaging hole 42 is formed. Is mounted so as to protrude inward in the radial direction of the accommodating portion 44 constituting the. The locking piece 61 is formed of a hard synthetic resin material into a donut shape having an insertion hole 63 at the center. When the cushion pad 41 is formed, the locking piece 61 is placed in a molding die and inserted into a cushion. It is fixed to the pad 41. On the left end surface of the locking piece 61 in the drawing, a locking receiving portion 62 that engages with the locking portion 35 of the engaging projection 31 is formed. Note that, also in the present embodiment, the tip of the engagement hole 31 is closed and closed by the closing portion 46 of the cushion pad 41 to absorb an impact from the left side in the figure.
[0023]
In this embodiment, when attaching the cushion pad 41 to the door trim 2, the engaging projection 31 of the door trim 2 is inserted into the engaging hole 42 of the cushion pad 41 to which the locking piece 61 is fixed. At this time, the engagement protrusion 31 in which the slit 36 is formed is bent inward in the radial direction, so that a pair of protrusions 33 a formed in the head 33 of the engagement protrusion 31 connect the engagement hole 42. It can pass through the hole 43 and the insertion hole 63 of the locking piece 61.
[0024]
When the head 33 completely passes through the connection hole 43 and the locking piece 61, the head 33 is housed in the housing portion 44, and the locking portion 35 of the engaging projection 31 and the locking of the locking piece 61 are locked. The engagement with the receiving portion 62 fixes the cushion pad 41 to the back surface of the door trim 2 and prevents the cushion pad 41 from being removed from the door trim 2. Since the locking piece 61 and the engaging projection 31 are both formed of a hard synthetic resin material, the locking section 35 and the locking receiving section 62 formed on the locking piece 61 are engaged. Thus, the engaging force between the locking portion 35 and the locking receiving portion 62 is larger than the engaging force between the locking piece 61 and the cushion pad 41 formed by insert molding.
[0025]
As described above, the engaging force between the locking piece 61 and the engaging projection 31 is larger than the engaging force between the locking piece 61 and the cushion pad 41. , The mounting hole 45 of the cushion pad 41 and the locking piece 61 are separated and separated from each other, and the cushion pad 41 is separated from the door trim 2 while leaving the locking piece 61 on the engaging projection 31. The cushion pad 41 can be easily separated, and the recyclability of the cushion pad 41 can be maintained.
[0026]
Further, since the cushion pad 41 is engaged with the engagement protrusion 31 via the locking piece 61, the cushion pad 41 itself is worn even if the cushion pad 41 moves relatively to the engagement protrusion 31. I can't. Further, in the present embodiment, when the cushion pad 41 is attached to the door trim 2, the engaging protrusion 31 can be bent, so that a hard material with little bending can be applied to the cushion pad 41. .
[0027]
<Third embodiment>
Next, a cushion pad fixing structure 50 according to a third embodiment of the present invention will be described with reference to FIGS. The engagement projection 11 in the present embodiment has exactly the same configuration as that in the first embodiment. Further, the cushion pad 41 in the present embodiment has exactly the same configuration as that in the above-described second embodiment. Also in the present embodiment, the locking pieces 65 are fixed to the cushion pad 41 by insert molding. As shown in FIG. 6, the locking piece 65 according to the third embodiment is formed of a synthetic resin material in a donut shape having an insertion hole 67 at the center, and a cutout 68 is formed at one location on the circumference. It is formed so that it can flex and expand radially outward.
[0028]
In the present embodiment, when the cushion pad 41 is mounted on the door trim 2, the engagement protrusion 11 of the door trim 2 is inserted into the engagement hole 42 of the cushion pad 41 to which the locking piece 65 is fixed. At this time, the locking piece 65 in which the notch 68 is formed bends together with the cushion pad 41 and expands radially outward, so that the connecting hole 43 of the engaging hole 42 and the insertion hole 67 of the locking piece 65 are formed. It can pass through the head 13 of the engaging projection 11. When the connecting hole 43 and the locking piece 65 completely pass through the head 13, the head 13 is stored in the storage portion 44, and the locking portion 15 of the engaging projection 11 and the locking piece 65 are locked. The engagement with the receiving portion 66 fixes the cushion pad 41 to the back surface of the door trim 2 and prevents the cushion pad 41 from being removed from the door trim 2.
[0029]
When the vehicle is dismantled or the like, the cushion pad 41 is pulled to the left in FIG. 5 so that the cushion pad 41 can be trimmed with the locking pieces 65 left on the engagement projections 11 as in the second embodiment. 2 can be easily separated from the cushion pad 41 and the recyclability of the cushion pad 41 can be maintained.
[0030]
<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and the drawings. For example, the following embodiments are also included in the technical scope of the present invention. Various modifications can be made without departing from the scope of the present invention.
[0031]
(1) In the cushion pad fixing structure 10 according to the first embodiment shown in FIG. 3, the slit 36 shown in the second embodiment is formed in the engagement projection 11, and the cushion pad 21 is connected to the engagement projection 11. In this case, the engaging projection 11 may be bent radially inward to engage the locking portion 15 with the locking receiving portion 25.
[0032]
(2) The locking piece does not necessarily need to be fixed to the cushion pad by insert molding, and the engaging force between the locking piece and the cushion pad, such as that obtained by pressure bonding to the cushion pad or an adhesive, is used as the locking piece. Any method may be used as long as it is smaller than the engagement force with the engagement protrusion and has good separability between the locking piece and the cushion pad.
[Brief description of the drawings]
FIG. 1 is a front view of a vehicle door to which a cushion pad fixing structure according to the present invention is applied.
FIG. 2 is a sectional view taken along line AA of FIG.
FIG. 3 is an enlarged view of FIG. 2 showing a cushion pad fixing structure according to the first embodiment of the present invention.
FIG. 4 is an enlarged view showing a cushion pad fixing structure according to a second embodiment of the present invention.
FIG. 5 is an enlarged view illustrating a cushion pad fixing structure according to a third embodiment of the present invention.
FIG. 6 is a perspective view of the locking piece of FIG. 5;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Vehicle door 2 ... Door trim 10, 30, 50 ... Cushion pad fixing structure 11, 31 ... Engagement protrusion 15, 35 ... Locking part 21, 41 ... Cushion pad 22, 42 ... Engagement hole 25, 62, 66: locking receiving portions 26, 46 ... closing portions 61, 65: locking pieces

Claims (3)

On the rear surface of the trim provided in the vehicle interior, an engaging projection with an engaging portion is formed upright,
The engagement projection is inserted into a cushion pad for absorbing a shock of a vehicle, and a bag-shaped engagement hole is formed in which a tip into which the engagement projection is inserted is closed by the cushion pad. The engagement hole is formed with an engagement receiving portion that engages with the engagement portion,
The engaging protrusion is inserted into the engaging hole, and at least one of the engaging protrusion and the locking receiving portion is bent to engage the locking portion and the locking receiving portion with each other. The cushion pad fixing structure for a vehicle, wherein the cushion pad is fixed to the rear surface of the trim by being combined. The lock receiving portion is formed on a lock piece attached to the cushion pad so as to protrude radially inward of the engagement hole,
The engaging protrusion is inserted into the engaging hole, and at least one of the engaging protrusion and the locking piece is bent to engage the locking portion and the locking receiving portion with each other. By doing so, the cushion pad is fixed to the rear surface of the trim such that the engaging force between the locking portion and the locking receiving portion is larger than the engaging force between the cushion pad and the locking piece. The structure for fixing a cushion pad of a vehicle according to claim 1, wherein: 3. The cushion pad fixing structure for a vehicle according to claim 2, wherein the locking piece is fixed to the cushion pad by insert molding when the cushion pad is molded.

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