JP5689334B2 - Connection structure of interior materials for vehicles - Google Patents

Description

  The present invention relates to a connection part structure for an interior material for a vehicle that decorates the interior surface of a vehicle such as an automobile.

  9 and 10 show a conventional connection structure of a vehicle interior material. In this example, a portion corresponding to the range A of the connecting portion between the upper portion 1U and the lower portion 1L of the door trim 1 shown in FIG. 1 is shown as an enlarged perspective view in FIG. 9, and a sectional structure taken along the line DD in FIG. 10.

  The door trim 1 is formed by connecting an upper portion 1U injection-molded with an appropriate synthetic resin material and a lower portion 1L by overlapping their connecting edges in the vehicle interior and exterior directions, and the joint portion is in the vehicle front-rear direction. To extend.

  The upper portion 1U and the lower portion 1L are connected and fixed by heat caulking means at a plurality of locations of their joint portions.

  Specifically, a boss portion 3 and a spacer rib 4 around the lower portion 1L are integrally formed with a required protruding height.

  A connecting piece 6 provided with a mounting hole 5 at a position corresponding to the boss portion 3 is integrally formed with the upper portion 1U.

  Then, with the boss portion 3 and the mounting hole 5 inserted and engaged with each other, the connecting piece 6 is placed on the spacer rib 4, and the protruding end of the boss portion 3 is moved to the periphery of the mounting hole 5 by an ultrasonic welding machine. The parts are fixed by heat caulking.

  In addition, the lengthwise end portion of the joint portion between the upper portion 1U and the lower portion 1L, that is, the end portion in the vehicle longitudinal direction is engaged with each other to position the upper portion 1U and the lower portion 1L. Means 7 are provided.

  The positioning means 7 is composed of a rib projection 8 projecting from the end of the lower portion 1L and a locate hole 9 provided in the connection piece 6 at the end of the upper portion 1U. Is inserted and engaged to perform positioning in the vertical direction and the vehicle longitudinal direction. This similar structure is shown in Patent Document 1, for example.

JP 2009-269415 A

  The peripheral portion of the door trim 1 is bent as a flange portion 2 so as to be in contact with and aligned with the vehicle body panel members B and P (which in this example is a door inner panel).

  Therefore, the formation limit of the rib protrusion 8 and the locating hole 9 that are engaged with each other is limited in the limit of formation at the bent base portion of the flange portion 2.

  On the other hand, at the joint portion of the flange portion 2, deformation over time such as warpage is likely to occur in the flange portion on the side of the overlapped vehicle interior (upper side), that is, in the flange portion 2 of the lower portion 1 </ b> L in this example.

  A deformation base point P such as a warp in the flange portion 2 of the lower portion 1L serves as a locking point between the edge of the rib protrusion 8 and the edge of the locate hole 9 described above. However, when the limit positions where the rib protrusions 8 and the locating holes 9 can be formed are restricted by the bent base portion of the flange portion 2 as described above, the deformation base point P is far from the end of the flange portion 2 and the deformation span l becomes long. turn into.

  As a result, as indicated by a chain line in FIG. 10, there is a possibility that the degree of deformation α of the flange portion 2 that warps and deforms from the deformation base point P toward the vehicle interior side may increase.

  Therefore, the present invention suppresses deformation with time toward the vehicle interior side of the flange portion which is the overlapped vehicle interior side (upper side) at the end portion in the length direction of the joint portion where a plurality of trim materials are continuously provided. The connection part structure of the interior material for vehicles which can do is provided.

  The vehicle interior material connecting portion structure according to the present invention has a joint portion in which a plurality of trim materials are continuously provided, and the connecting edges of the trim materials are overlapped with each other. The end portion is provided with positioning means for engaging with each other to position the plurality of trim materials.

  In this joint part, the boss part provided in one trim material on the side of the overlapped vehicle compartment is inserted into the mounting hole provided in the other trim material, and the protruding end part of the boss part is It is made to fix to the peripheral part of a mounting hole by heat caulking.

On the other hand, the positioning means is constituted by a rib wall provided in one trim material and a slit provided in the other trim material into which the rib wall is inserted and engaged. Then, the rib wall is formed over a flange portion that is bent at the side edge portion of the one trim material along the length direction of the seam portion, while the slit corresponds to the rib wall. formed in a side edge portion of the other trim superposing the flange portion, inserting said rib walls to the slit, the engagement projecting end and fixed by thermal caulking the peripheral edge portion of the slit engaging This is the main feature.

According to the present invention, since the positioning means is constituted by the rib wall and the slit into which the positioning means is inserted and engaged, the rib wall is arranged on one side of the trimmed vehicle interior side (upper side) at the joint portion. It can be formed as long as possible to the flange part which is formed by bending on the side edge part of the material. And since the engagement protruding end of this rib wall is fixed by heat caulking to the peripheral edge of the slit, the deformation base point of the side edge portion of one trim material is deformed as near the formation toe end of the rib wall. The span can be shortened.

  As a result, it is possible to reduce the temporal deformation of the side edge portion, which is the overlapped vehicle interior side, toward the vehicle interior side at the end portion in the lengthwise direction of the joint portion, and it is possible to improve the appearance and quality.

The side view which looked at an example of the interior material for vehicles made into the object of this invention from the back side. The expansion perspective view of the A range part of FIG. Sectional drawing which follows the BB line of FIG. The perspective view which shows the boss | hub part of one trim material, and the formation part of a rib wall. The perspective view explaining the case where the boss | hub part and rib wall shown in FIG. The side view which shows an example of the horn of an ultrasonic welder. The top view of the horn edge part shown in FIG. The expanded sectional view which follows the CC line of FIG. The expansion perspective view similar to FIG. 2 which shows the conventional structure. Sectional drawing which follows the DD line | wire of FIG.

  Hereinafter, an embodiment of the present invention will be described in detail by taking a connection portion between an upper portion and a lower portion of a door trim as a connection portion of a trim material as an example, and by attaching the same reference numerals to the same portions as the conventional configuration together with the drawings. Describe.

  FIG. 1: has shown the side view which looked at the door trim 1 of this embodiment from the back surface side (opposite surface side with a door inner panel).

  The door trim 1 includes an upper portion 1U that is injection-molded with an appropriate synthetic resin material, and a lower portion 1L. The upper portion 1U and the lower portion 1L are connected by overlapping their connection edge portions in the vehicle interior and exterior directions so that the joint portion extends in the vehicle front-rear direction.

  In the example shown in FIGS. 1 to 3, the upper end portion of the lower portion 1L is overlapped on the lower end portion of the upper portion 1U so that the connection edge portion of the lower portion 1L is on the vehicle interior side.

  The upper portion 1U and the lower portion 1L are connected and fixed by heat caulking means at a plurality of locations in the vehicle front-rear direction at their joints.

  Specifically, a cylindrical boss portion 3 having a required protruding height and a spacer rib 4 around the lower portion 1L are integrally formed.

  On the other hand, a connecting piece 6 provided with a mounting hole 5 at a position corresponding to the boss portion 3 is integrally formed in the upper portion 1U.

  Then, with the boss portion 3 and the mounting hole 5 inserted and engaged with each other, the protruding end portion of the boss portion 3 is attached by an ultrasonic welding machine as will be described later with the connecting piece 6 placed on the spacer rib 4. The hole 5 is fixed by heat caulking (see FIG. 3).

  At the peripheral edge of the door trim 1, the front, rear edge and lower edge thereof are bent as a flange portion 2 so as to be in contact with and aligned with the door inner panel B / P which is a vehicle body panel material. .

  At the vehicle front-rear direction end portion of the joint portion between the upper portion 1U and the lower portion 1L, the aforementioned connecting piece 6 is extended downward, and the boss portion 3 and the mounting hole 5 are caulked and fixed at two locations, The joint rigidity at the end portion in the length direction of the joint portion is increased (see FIG. 2).

  Positioning means 7 is provided at the end portion in the length direction of the joint portion so as to engage with each other to position the upper portion 1U and the lower portion 1L in the vertical direction and the vehicle front-rear direction.

  The positioning means 7 includes a rib wall 11 provided in the lower portion 1L and a slit 12 provided in the upper portion 1U and into which the rib wall 11 is inserted and engaged.

  Of the spacer ribs 4 respectively attached to the molding bases of the upper and lower bosses 3, the rib wall 11 is formed on the flange portion 2 along the length direction of the joint portion on the extension of the spacer rib 4 facing the vehicle longitudinal direction. (See FIG. 4).

  On the other hand, two slits 12 are formed on the side edge portion of the connection piece 6 corresponding to the two upper and lower rib walls 11.

  Then, in a state where the rib wall 11 and the slit 12 are inserted and engaged, the engagement protruding end portion of the rib wall 11 protruding from the slit 12 in the surface direction of the connecting piece 6 is heated to the peripheral portion of the slit 12. It is crimped and fixed.

  2 and 5 both show a state before the boss portion 3 and the rib wall 11 are caulked.

  The heat caulking of the boss 3 and the rib wall 11 can be performed by a general-purpose ultrasonic welding machine.

  FIG. 5 shows the positional relationship between the boss 3 and the rib wall 11 and the end of the horn 20 of the ultrasonic welder.

  In the example shown in FIG. 5, the end of the horn 20 has a single head for the sake of convenience, but in reality, a multi-head arrangement type is used, and the upper and lower bosses 3 and The protruding end portions of the upper and lower rib walls 11 are fixed by heat caulking simultaneously in one step.

  That is, the boss part 3 and the rib wall 11 which make a pair are arranged close to each other within a range in contact with the processed surface of the horn 20 end, and the boss part 3 and the rib wall 11 are required by the horn 20 end. Under pressure, heat caulking can be fixed by one ultrasonic welding.

  6 to 8 show the end (head) structure of the horn 20 described above.

  One side edge of the top processing surface 21 at the end of the horn 20 for welding the boss portion 3 is formed on an inclined surface having substantially the same angle as the bending angle of the side edge portion along the flange portion 2 in the connection piece 6. The wall 11 is used as a side processing surface 22 for welding.

  The other side edge of the top processing surface 21 is inclined and symmetrical with the side processing surface 22 so as not to cause amplitude variation.

  The top processing surface 21 is formed as a ring-shaped protrusion having a straight portion in the center in accordance with the end surface shape of the boss portion 3, while the side processing surface 22 is subjected to, for example, diamond pattern knurling. . In this way, any of the processed surfaces 21 and 22 can be processed to reduce the contact portion, thereby reducing the welding load.

  In addition, the neck side edges 23 and 23 following the side processed surface 22 and the inclined surface opposite to the side processed surface 22 are cut symmetrically with a step having a required depth so that the amplitude of the horn head does not vary. It is carried out.

  As described above, according to the connection portion structure of the present embodiment, the positioning means 7 for the upper portion 1U and the lower portion 1L of the door trim 1 is constituted by the rib wall 11 and the slit 12 into which the rib is inserted and engaged. Yes. For this reason, it becomes possible to form this rib wall 11 as long as possible to the terminal vicinity position of the flange part 2 of the lower part 1L which becomes the vehicle interior side (upper side) of the overlap at the joint part.

And since the engagement protrusion edge part of this rib wall 11 is caulked and fixed to the peripheral part of the slit 12, the deformation | transformation base point P of the flange part 2 of the lower part 1L is used as the formation toe part of the rib wall 11. As a vicinity, the deformation span can be shortened as l ₁ (see FIG. 3).

As a result, the degree of deformation of the flange portion 2 of the lower portion 1L, which is the overlapped vehicle interior side, at the end portion in the lengthwise direction of the joint portion is warped and deformed toward the vehicle interior side over time, α ₁ (FIG. 3)). Thereby, the external appearance and quality feeling of the door trim 1 can be enhanced.

  Further, as described above, the upper part 1U and the lower part 1L of the door trim 1 are fixed by heat caulking between the boss part 3 and the peripheral part of the mounting hole 5 at the end part in the vehicle front-rear direction, and the ribs constituting the positioning means 7 A multiple fixing structure with heat caulking and fixing between the wall 11 and the peripheral edge of the slit 12 can be achieved, and the joint strength at the end portion of the joint portion can be increased.

  Furthermore, in this embodiment, the above-mentioned boss part 3 and the rib wall 11 are arranged close to each other within a range in contact with the horn 20 end of the ultrasonic welding machine, and the boss part 3 and the rib wall 11 are simultaneously arranged. Heat caulking can be fixed by welding.

  Thereby, processing man-hours can be reduced as much as possible, and it can obtain advantageously in cost.

  In the said embodiment, although the door trim 1 was illustrated as a vehicle interior material, this invention is not limited to this, Of course, it can apply to the connection structure of some other adjacent trim materials.

1 ... Door trim (vehicle interior material)
1U ... Upper part (the other trim material)
1L ... Lower part (one trim material)
2. Flange (side edge of door trim)
3 ... boss 4 ... spacer rib 5 ... mounting hole 6 ... connection piece 7 ... positioning means 11 ... rib wall 12 ... slit 20 ... horn

Claims (1)

The seam part where a plurality of trim materials are continuously arranged is configured by overlapping the connection edges of these trim materials,
The lengthwise end of the seam portion includes positioning means for engaging with each other to position the plurality of trim materials,
At a plurality of locations of the seam portion, the boss portion provided on one trim material on the side of the overlapped vehicle interior is inserted into the mounting hole provided on the other trim material, and the protruding end of the boss portion is It is a structure that is fixed by heat caulking to the periphery of the mounting hole,
The positioning means;
A rib wall provided on the one trim material;
Provided in the other trim material, the rib wall is inserted and engaged with a slit,
The rib wall is formed over a flange portion that is bent at the side edge portion of the one trim material along the length direction of the seam portion, while the slit corresponds to the rib wall and the flange portion. Formed on the side edge portion of the other trim material to be overlapped with the rib wall, and the rib wall is inserted into the slit and engaged, and the engagement protruding end portion is fixed by heat caulking to the peripheral edge portion of the slit. The vehicle interior material connecting part structure characterized.

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