JPH057846Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a method for installing a door trim molding that is installed for the purpose of hiding the welding traces when cloth, etc. is welded to the surface of an automobile door trim. Regarding structural improvements.

(Prior Art) In general, door trims facing the interior of automobiles are equipped with
Carpets, cloth, etc. are often attached by welding, and in this case, a door trim molding is attached to hide the welding marks exposed on the surface. However, when a plastic molding made of synthetic resin is used as the door trim molding, there is a problem that the door trim molding may be distorted or fall off due to the difference in thermal expansion between the door trim molding and the door trim.

In order to solve the problem caused by the above-mentioned difference in thermal expansion, in the mounting structure of the side molding that is attached to the outer surface of the vehicle body, the side molding is conventionally attached to the outer surface of the vehicle body through a mounting member, and It has been proposed that the side moldings mentioned above can be slid in the longitudinal direction (for example, Japanese Utility Model Publication No. 59-41884, Japanese Utility Model Publication No. 57-20333).
(see publication). These devices use a clip with a bulge at the tip as the mounting member, the side molding is slidably engaged with the head of the clip, and the bulge is press-fitted into a locking hole on the outside of the vehicle body. By doing so, the side moldings are fixed in position so that they do not separate from the outer surface of the vehicle body. When a thermal expansion difference occurs, the side molding slides in the longitudinal direction with respect to the clip, thereby absorbing the relative expansion and contraction of the side molding due to the thermal expansion difference.

(Problem to be solved by the invention) However, when the conventional mounting structure described above is applied to the mounting structure of the door trim molding, the end of the clip serving as the mounting member must be inserted into the locking hole on the outer surface of the vehicle body when installing the side molding. Since this is done by press-fitting, it is not possible to achieve a sufficient balance between installation workability and installation strength. That is, the mounting strength increases as the enlarged portion at the tip of the clip increases; however, on the other hand, it takes time to press-fit the clip, and the workability of the mounting process decreases. On the other hand, as the enlarged portion is made smaller, the installation workability improves, but on the other hand, the risk of the above-mentioned pull-out increases. Furthermore, since the locking hole for press-fitting the above-mentioned clip has to be formed in the relatively soft door trim made of synthetic resin, even if the above-mentioned clip is press-fitted, the mounting strength cannot be sufficiently maintained. .

In order to make the mounting strength sufficiently strong, it is conceivable to firmly attach the mounting member to the door trim in advance and attach the door trim molding to this mounting member. However, in this case, the door trim molding must be attached by sliding it in the longitudinal direction with respect to the above-mentioned attachment member fixed in position on the door trim side, which is a time-consuming process and results in a deterioration of the installation workability. In particular, when the door trim molding has a curved shape in the longitudinal direction, the installation work becomes extremely difficult.

Furthermore, in the conventional mounting structure described above, the door trim molding is slidable in the longitudinal direction and there is no restriction, so if an unexpected external force is applied to the door trim molding in the longitudinal direction, there is a risk of the door trim molding slipping out.

Furthermore, as a mounting member for attaching an object to an object to be attached, fixing means that clamp the object by rotation are known in the field of certification instruments (for example, Japanese Utility Model Publication No. 51-8303, Japanese Utility Model Publication No. 47-22057). However, the above-mentioned fixing means locks the object to be attached so that it does not move relative to the object to be attached in the axial direction of the fixing means and in all the front-back and left-right directions orthogonal to this axial direction. Therefore, it is not possible to absorb deformation of the door trim molding due to differential thermal expansion.

Furthermore, since the door trim molding is mainly provided from a decorative point of view, it is necessary to make the door trim molding hollow and as thin as possible to prevent an increase in vehicle weight as much as possible.
If it is made too thin, the strength of the door trim molding itself will decrease.

This idea was devised in view of these circumstances, and its objectives are to improve installation workability, improve installation strength including reinforcing the door trim molding itself, and absorb differences in thermal expansion. 3
The aim is to satisfy two issues at the same time.

(Means for Solving the Problems) In order to achieve the above object, the present invention is such that a door trim molding is attached to a door trim provided on an automobile door by means of a grommet. In this device, the door trim is provided with an elongated hole extending in the longitudinal direction of the door trim molding and extending through the door trim molding at a mounting position of the door trim molding. Further, the door trim molding is formed in a hollow shape in the longitudinal direction, and the back part of the door trim molding attached to the door trim has a width that communicates the internal space of the door trim molding and the elongated hole of the door trim with each other. It has an extending opening. Furthermore, the grommet has a shaft portion inserted through both the elongated hole and the opening, a collar-shaped bottom plate portion protruding radially from a position on the back side of the door trim of the shaft portion, and a bottom plate portion of the shaft portion. The door trim molding may include a head that projects from a position on the interior space side in a direction perpendicular to the shaft portion and perpendicular to the longitudinal direction of the door trim molding. The head has a thickness that allows the head to be inserted into both the elongated hole and the opening when the head is aligned with the longitudinal direction of the door trim mold by rotating the shaft around the shaft. , and has substantially the same shape as the inner surface shape of the interior space in a direction orthogonal to the longitudinal direction of the door trim molding. Further, the space between the facing surfaces of the head and the bottom plate portion is such that the rear surface of the door trim molding and the door trim are held in contact with each other between the facing surfaces. Furthermore, the shaft portion is configured to have a thickness that allows the shaft portion to be relatively movable in the longitudinal direction within the elongated hole.

(Function) With the above configuration, in the present invention, when the door trim molding is attached to the door trim, the door trim molding is applied to the mounting position of the door trim, and the head of the grommet is aligned with the longitudinal direction of the door trim molding, and the rear surface of the door trim is It is inserted into the elongated hole and the opening of the door trim molding from the side and placed in the interior space of the door trim molding. By rotating the grommet approximately 90 degrees around the shaft, the head comes into contact with and fits into the inner surface of the internal space perpendicular to the longitudinal direction, and the head and the bottom plate are connected to each other. The rear surface of the door trim molding and the door trim are held between opposing surfaces in a state where they are in contact with each other. As a result, even if the hollow door trim molding is made thin in order to reduce weight, the head part acts as a node that partitions the interior space of the door trim molding, and the wall surface of the hollow door trim molding is supported from inside, so the door trim The strength of the molding itself is improved.

To install the door trim molding mentioned above, insert the grommet from the back side of the door trim, and then
Since it only needs to be rotated, the conventional mounting structure involves engaging the clip with the door trim molding, sliding it in the longitudinal direction of the door trim molding to the locking hole position on the vehicle body, and then press-fitting into the locking hole. The number of man-hours and amount of work required are both reduced and easier compared to the conventional method, and the workability of the installation work is improved.

Furthermore, since the door trim molding is installed with the rear surface of the door trim molding and the door trim being sandwiched between opposing surfaces of the bottom plate and head of the grommet, the door trim molding does not separate from the door trim. , is securely fixed in position so as not to shift in the direction away from the door trim and in the direction perpendicular to the longitudinal direction of the door trim molding. Moreover, since the head fits into the inner surface of the door trim molding, the door trim molding and the grommet are securely fixed in position without rattling, and relative movement between the two is prevented. Therefore, in addition to improving the installation workability described above, it is also possible to improve the installation strength.

Furthermore, since the long hole in the door trim into which the shaft of the grommet is inserted is formed long in the longitudinal direction of the door trim mold, and the shaft is thick enough to be relatively movable in the longitudinal direction within the long hole, the door trim Even if relative expansion/contraction occurs in the door trim molding due to the thermal expansion difference between the door trim molding and the door trim molding, it is absorbed by the relative movement of the shaft portion, thereby eliminating the possibility of the door trim molding being distorted or falling off due to the thermal expansion difference. At this time, the relative movement of the shaft is restricted within the range of the elongated hole, so while absorbing the expansion and contraction caused by the thermal expansion of the door trim molding, it is possible to prevent the door trim molding from shifting when an inadvertent external force is applied in the longitudinal direction. This will prevent it from coming off.

Therefore, problems such as improvement in installation workability, improvement in installation strength, and absorption of differences in thermal expansion can be solved at the same time.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

In Fig. 5, 1 is a car body, 2, 2...
... is a door swingably attached to the vehicle body 1. FIG. 4 shows, for example, the right front door 2 among the doors 2, 2..., 3 is a door glass that rises and lowers through the upper end opening of the door body (not shown), 4,
Reference numeral 5 designates outer and inner weather strips fitted between the door glass 3 and the upper end opening of the door body. The upper end of a door trim 6 that covers the side surface of the vehicle interior of the door body is suspended between the inner weather strip 5 and the periphery of the upper opening of the door body. It is fixed by a fastener.

As shown in FIG. 3, the door trim 6 is
A substrate 7 having a substantially inverted bow-shaped cross section and forming the upper half thereof.
and a plate-shaped plate 8 constituting the lower half of the board 7, and the board 7 and the plate 8 are arranged so that the upper end of the plate 8 is attached to the lower end of the board 7 on the passenger compartment side of the board 7 (on the left side in Fig. 4). It is fixedly attached and installed in one piece. A skin material 9 is pasted on the surface of the substrate 7, and a leather 10 is pasted thereon, while a welder foam 11 and a vinyl chloride 12 as a skin material are pasted on the upper surface of the plate 8. 12 is welded to the surface side,
A long pile cloth 13 with its peripheral edge fixed to the lower surface of the plate 8 is welded to the vicinity of the lower end of the plate 8, and a door trim is attached to the front side of the vehicle body 1 (left side in FIG. 3) at the lower surface of the plate 8. A pocket 14 is integrally provided.

On the surface side of the leather 10 that forms the surface of the substrate 7, a curved portion 15 is formed at the upper part to be curved so as to protrude toward the interior of the vehicle, and a curved portion 16 at the lower part of the substrate 7 is similarly formed from the lower part. The upper and lower ends of the iron plate 17 are fixedly attached to the substrate 7 so as to cover the surface of the leather 10 with a slight gap 18 towards the center, and the iron plate 17
A cushion 19 and a cloth 20 are attached to the surface of the iron plate 17 by welding by welding to the peripheral edge of the iron plate 17, with the cloth 20 being placed on the outermost surface. The lower part of the curved portion 16 of the board 7 is further projected toward the interior of the vehicle interior by a stepped portion 21.
An armrest (not shown) serving as a handle for the door 2 can be attached to the door 2.

A groove 23 extending substantially horizontally is formed between the stepped portion 21 of the substrate 7 and the iron plate 17, which has a welding mark left at the lower end where the cloth 20 is welded. This groove part 23 is provided with a door trim molding 24 made of synthetic resin made of glossy matsuki molding.
is fitted along the groove portion 23 so as to hide almost the entire groove portion 23, and the groove portion 23
The door trim 6 corresponding to the bottom surface has a plurality of rectangular long holes 25, 25, which are long in the extending direction of the groove portion 23, that is, in the longitudinal direction of the door trim molding 24.
are formed through the holes at predetermined intervals.

On the other hand, as shown in detail in FIGS. 1 and 2, the door trim molding 24 has a substantially C-shaped cross section, which has a stepped portion 24a in the lower half of the surface side (lower left half in FIG. 1). The door trim molding 24 is formed in a hollow shape, and has an opening 26 communicating with the interior space of the door trim molding, with a width corresponding to the vertical width of each elongated hole 25 of the door trim 6, on the back surface of the door trim 6 that contacts the front side of the door trim 6. It is formed in the longitudinal direction (direction perpendicular to the plane of the paper in FIG. 1, left-right direction in FIG. 2).

The door trim molding 24 has a plurality of grommets 2 shown in FIG.
7, 27... are integrally attached. That is, each grommet 27 has a shaft portion 30 inserted through both the opening 26 of the door trim molding 24 and each elongated hole 25 of the door trim 6, and a shaft portion 30 located on the back side of the door trim (first side) of the shaft portion 30.
A collar-shaped bottom plate part 29 protrudes in the radial direction from a position (on the right side in the figure), and a head part 28 protrudes in a direction perpendicular to the shaft part 30 from a position on the inner space side of the shaft part 30. .

The head 28 is in a state where its protruding direction matches the longitudinal direction of the door trim molding 24 (second
Thickness (thickness in the vertical direction in FIG. 2) that allows insertion into both the elongated holes 25 and the opening 26 in the state shown by the two-dot chain line in the figure), and the thickness in the vertical direction of the door trim molding 24 in the direction perpendicular to the longitudinal direction of the door trim molding 24. It has approximately the same shape as the inner surface shape of the internal space (the inner surface shape shown in FIG. 1). That is, the head portion 28 is formed into a substantially rectangular shape that is substantially the same as the inner surface shape of the door trim molding 24, and an engaging portion 28a that engages with a stepped portion 24a formed on the door trim molding 24 is formed on the front surface thereof. has been done. That is, when the head 28 is arranged in a direction perpendicular to the longitudinal direction of the door trim molding 24 (as shown by the solid line in FIG. 1 and the broken line in FIG. 2), the head 28
comes into contact with and fits into the inner surface of the internal space to form a joint that partitions the internal space.

The distance between the opposing surfaces of the head 28 and the bottom plate part 28 is set equal to the sum of the thickness of both opening edges of the opening 26 forming the back surface of the door trim molding 24 and the thickness of the door trim 6. As a result, with the head 28 disposed in a direction perpendicular to the longitudinal direction of the door trim molding 24, the rear surface of the door trim molding 24 and the skin material 9 of the door trim 6 are connected between the relative inner surfaces. Both 24 and 6 are held in a state where they are in contact with each other. Therefore, the length of the shaft portion 30 is also set to the length necessary to realize the predetermined spacing.

The bottom plate portion 29 has a pair of mark portions 29a formed by cutting out semicircles at respective positions facing each other in the diametrical direction of the peripheral edge portion and facing each other in the direction of protrusion of the head 28. , 29a.
The pair of mark portions 29a, 29a serve as a mark for confirming the rotational position of the head 28 around the shaft portion 30 from the back side of the door trim 6, and as a mark for rotating the grommet 27. It is now provided with a function as an operating portion for operating force.

The shaft portion 30 has a thickness that allows relative movement in the longitudinal direction of the door trim molding 24 within the elongated hole 25, and due to the difference in thermal expansion between the door trim molding 24 and the door trim 6, the door trim molding 24 When the door trim molding 24 and the head 28 relatively expand and contract in the longitudinal direction, movement of the shaft portion 30, which is integrated with the door trim molding 24 and the head 28, in the longitudinal direction is allowed within the range of the elongated hole 25. ing.

In the mounting structure configured as described above, in order to attach the door trim molding 24 to the door trim 6, first, the door trim molding 24 is applied to the groove portion 23 which is the mounting position of the door trim 6, and the grommet 2
With the head 28 of the door trim molding 24 aligned with the longitudinal direction of the door trim molding 24, the head 28 of the door trim molding 24 is inserted into the elongated hole 25 and the opening 26 of the door trim molding 24 from the back side of the door trim 6.
4 (see the two-dot chain line in Figure 2).

Next, by grasping the bottom plate portion 29 and rotating the grommet 27 approximately 90 degrees around the shaft portion 30 so that the end portion 28a of the head portion 28 of the grommet 27 is on the lower side, the head portion 28 is It is brought into contact with the inner surface perpendicular to the longitudinal direction of the internal space (see the solid line in FIG. 1 and the broken line in FIG. 2). The installation work is thus completed, and the head 28 of the grommet 27 and the door trim molding 24 are integrally connected so as not to move relative to each other, and the The rear surface of the door trim molding 24 and the door trim 6 are held in contact with each other, so that the door trim molding 24 can be fixed in position in the groove 23 of the door trim 6. Further, the welder welding traces of the cloth 20 attached to the vehicle interior side of the door trim 6 (left side in FIG. 1) can be covered up by the door trim molding 24.

In this way, the installation work of the door trim molding 24 can be accomplished by simply inserting the head 28 of the grommet 27 from the back side of the door trim 6 and rotating it. After that, compared to the work of sliding the door trim molding in the longitudinal direction to the locking hole position on the vehicle body side and press-fitting it into the locking hole, both the number of man-hours and the amount of work are reduced and the installation work is easier. It is possible to improve sexual performance. In particular, even if the door trim molding 24 has a curved shape in the longitudinal direction as in this embodiment, there is no need for relative sliding work between the clip and the door trim molding in the conventional mounting structure during installation. Installation work can be performed easily and reliably.

Furthermore, when the door trim molding 24 is installed, the back surface of the door trim molding 24 and the door trim 6 are sandwiched between the opposing surfaces of the bottom plate 29 and the head 28 of the grommet 27, so that the door trim The molding 24 can be reliably fixed in position so that it does not separate from the door trim 6, and the shaft portion 30 can be inserted into the elongated hole 25 and the opening 2.
6, the door trim molding 24 can be reliably fixed in position so as not to move in the vertical direction, which is a direction perpendicular to the longitudinal direction. In addition, since the head 28 has almost the same inner shape as the door trim molding 24, there is no rattling between the door trim molding 24 and the grommet 6, and relative movement between the two is prevented. The position can be fixed. Therefore, the mounting strength can be improved compared to the conventional mounting structure in which the clip having an enlarged portion is press-fitted into the locking hole to fix the clip in position.

Moreover, in the case of the mounting structure of this embodiment, the head 28 of the grommet 27 becomes a node that partitions the interior space of the door trim molding 24 in the above-mentioned mounted state, and supports the wall surface of the hollow door trim molding 24 from the inside, so that the door trim The strength of the molding 24 itself can be improved. As a result, the above-mentioned door trim molding 2
4 can be made thinner, and door trim molding 2 can be made thinner.
4 can be made lighter.

Furthermore, the door trim 6 and the door trim molding 24
When the door trim molding 24 relatively expands and contracts in the longitudinal direction due to the thermal expansion difference between the grommet 2
The elongated hole 2 of the door trim 6 into which the shaft portion 30 of No. 7 is inserted
5 is formed to be long in the longitudinal direction of the door trim molding 24, and the shaft portion 30 is relatively movable in the longitudinal direction within the elongated hole 25, so that the door trim molding 24 expands and contracts as described above. The shaft portion 30 is absorbed by moving within the elongated hole 25. Therefore, it is possible to reliably prevent thermal deformation such as distortion of the door trim molding due to differences in thermal expansion, and occurrence of falling off. Moreover, the door trim molding 24 only moves relative to each other within the longitudinal range of the elongated hole 25, and relative movement beyond that range is restricted by the elongated hole 25.
It is possible to reliably prevent the door trim molding 24 from slipping off when an unexpected external force is applied to the door trim molding 24 in the longitudinal direction. Therefore, it is possible to absorb the expansion and contraction of the door trim molding 24 caused by the thermal expansion, thereby preventing the door trim molding 24 from being deformed, and maintaining a secure attachment state.

As described above, according to this embodiment, the head 28 of the grommet 27 for sandwiching the door trim molding 24 and the door trim 6 is attached to the door trim molding 24.
By forming the elongated hole 25 into which the shaft portion 30 of the grommet 27 is inserted to be long in the longitudinal direction of the door trim molding 24, installation workability is improved, and installation strength and strength are increased. It is possible to simultaneously solve the problems of improving the strength of the door trim molding 24 itself and absorbing differences in thermal expansion.

(Effects of the invention) As explained above, in the present invention, the installation work of the door trim molding can be done by simply inserting the head of the grommet from the back side of the door trim and rotating it. Compared to the work of engaging the door trim molding with the door trim molding, sliding it in the longitudinal direction of the door trim molding to the locking hole position on the vehicle body, and then press-fitting it into the locking hole, both the number of man-hours and the amount of work are reduced. This makes it possible to improve the installation workability. In particular, the above-mentioned installation workability is significantly improved in that the installation work can be easily and reliably performed even on door trim moldings having a curved shape in the longitudinal direction, which is difficult with conventional installation structures. I can do it.

In addition, in the installation state of the door trim molding,
Since the back part of the door trim molding and the door trim are sandwiched between the facing surfaces of the bottom plate part and the head of the grommet, the door trim molding can be reliably fixed in position so that it does not separate from the door trim. . In addition, since the head has almost the same shape as the inner surface of the door trim molding, it can be positioned securely without rattling between the door trim molding and the grommet and preventing relative movement between the two. Can be fixed. As a result, the mounting strength can be improved compared to the conventional mounting structure in which a clip having an enlarged portion is press-fitted into a locking hole to fix the clip in position.

Moreover, in the case of the mounting structure of this invention, the head of the grommet becomes a joint that partitions the interior space of the door trim molding in the above-mentioned mounted state and supports the wall surface of the hollow door trim molding, so it is possible to improve the strength of the door trim molding itself. can. Thereby, the door trim molding can be made thinner by the amount of strength improved by the knots, and the weight of the door trim molding can be reduced.

Further, when the door trim molding relatively expands and contracts in the longitudinal direction due to a thermal expansion difference between the door trim and the door trim molding, a long hole in the door trim through which the shaft portion of the grommet is inserted is formed to be long in the longitudinal direction of the door trim molding, and Since the shaft portion is relatively movable in the longitudinal direction within the elongated hole, expansion and contraction of the door trim molding can be absorbed by the shaft portion moving within the elongated hole. Therefore, it is possible to reliably prevent thermal deformation such as distortion of the door trim molding due to differences in thermal expansion, and occurrence of falling off. Moreover, the door trim molding only moves relative to the length of the elongated hole, and relative movement beyond that range is regulated by the elongated hole, so there is no careless movement in the longitudinal direction with respect to the door trim molding. It is possible to reliably prevent slippage from occurring when an external force is applied.
For this reason, while absorbing the expansion and contraction of the door trim molding caused by the thermal expansion and preventing its deformation,
A reliable mounting state can be maintained, and the mounting strength can be improved.

In this way, this invention makes the head of the grommet for sandwiching the door trim molding and the door trim almost the same shape as the inner surface shape of the door trim molding, and the elongated hole through which the shaft of the grommet is inserted is formed in the door trim. By forming the molding to be long in the longitudinal direction, it improves the installation workability, the strength of the installation and the strength of the door trim molding itself,
It is possible to solve the problems of absorption of thermal expansion difference at the same time.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is an enlarged cross-sectional view showing how the door trim molding is installed; FIG. 2 is a view taken in the direction of FIG. 1; FIG. 3 is an overall front view of the door trim; 5 is a longitudinal sectional view of the main part of the door trim, FIG. 5 is a perspective view of the vehicle body, and FIG. 6 is a perspective view of the grommet. 1...Vehicle body, 2...Door, 6...Door trim,
24... Door trim molding, 25... Long hole, 26
...opening, 27...grommet, 28...head,
29...Bottom plate part, 30...Shaft part.

Claims (1)

[Claims for Utility Model Registration] A mounting structure in which a door trim molding is attached to a door trim disposed on a door of an automobile using a grommet, the door trim being formed through the mounting position of the door trim molding so that the door trim molding The door trim molding is provided with a long hole extending in the longitudinal direction, and the door trim molding is formed in a hollow shape in the longitudinal direction, and the inner space of the door trim molding and the long hole of the door trim are connected to the rear part of the door trim molding that is attached to the door trim. The grommet is provided with an opening extending in the longitudinal direction with a width communicating with each other, and the grommet has a shaft portion inserted through both the elongated hole and the opening, and a shaft portion extending radially from the position of the shaft portion on the back side of the door trim. a flange-shaped bottom plate portion protruding from the inner space side of the shaft portion, and a head portion protruding from a position on the interior space side of the shaft portion in a direction perpendicular to the shaft portion and perpendicular to the longitudinal direction of the door trim molding; The part has a thickness such that it can be inserted into both the elongated hole and the opening when the head part is aligned with the longitudinal direction of the door trim molding by rotating the shaft part around the shaft part, and the part has a thickness that allows the head part to be inserted into both the elongated hole and the opening. The shape of the inner surface of the door trim molding in the direction perpendicular to the longitudinal direction of the door trim molding is approximately the same as the shape of the inner surface of the door trim molding in the direction perpendicular to the longitudinal direction of the molding. The width of the shaft portion is set to such that the shaft portion can be moved relatively in the longitudinal direction of the door trim mold within the elongated hole. A door trim molding mounting structure characterized by: