JP2008074271A - Automotive interior part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stabilize mounting strength at low cost regarding a joint structure of terminal ends of divided bodies in an automotive interior part in which the divided bodies are joined to one another. <P>SOLUTION: A door trim body 20 in a door trim 10 is constituted of the three divided bodies of a door trim upper 30, a door trim center 40 and a door trim lower 50. As the joint structure of the door trim center 40 and the terminal end of the door trim lower 50, an opening 41 and an overhung piece 42 are formed on the door trim center 40, an engagement claw 51 in the door trim lower 50 is engaged with the inside of the opening 41, and the back side of the engagement claw 51 is brought into an urging state by the overhung piece 42. Thereby, an engagement structure of the engagement claw 51 can be confirmed by visual recognition, and a conventional welding facility with high cost can be abolished to cause the reduction of cost. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an interior part for an automobile that employs a trim body formed by joining and fixing divided bodies, and in particular, an overhang function for a locking claw is provided on the other side as a joining and fixing structure of terminal portions of the divided bodies. The present invention relates to an automotive interior part that can be visually checked during assembly work, can eliminate expensive welding equipment, and can be manufactured at low cost.

  FIG. 6 shows a door trim 1 as an interior part mounted on the interior surface side of the door panel. The door trim 1 is provided with an armrest 3 on which the occupant rests with an elbow on the surface center of the door trim body 2 as a base. ing. Below the armrest 3 is a door pocket opening 4 which can accommodate equipment, and on the back side thereof, as shown in FIG. 7, a pocket back cover 4a is fixed, and on the front side of the pocket opening 4 A speaker grill 5 is attached to the door trim main body 2 or a separate body.

  By the way, as a recent trend, the door trim main body 2 is often configured by joining and fixing the divided bodies in order to reduce the size of the molding die and improve the appearance performance. Also in this conventional example, the door trim main body 2 is composed of a three-part body of a door trim upper 2a, a door trim center 2b, and a door trim lower 2c. As a method of joining and fixing the respective divided bodies 2a, 2b, 2c, ultrasonic welding is used. Processing method is adopted. That is, an ultrasonic welding boss is projected on one side, an attachment hole is provided on the other side, an ultrasonic welding boss is inserted into the attachment hole, and the tip of the ultrasonic welding boss is caulked by ultrasonic machining. Thus, the divided bodies are joined together. Further, as shown in FIG. 8, the terminal portion is joined to the door trim center 2 b by polymerizing the welded piece 6 of the door trim lower 2 c and subjecting the welded piece 6 to ultrasonic welding so that the terminal portion is joined. In fact, the door trim center 2b and the door trim lower 2c are joined and fixed. Patent Document 1 describes in detail a conventional method of joining divided bodies by ultrasonic welding and a configuration of interior parts manufactured thereby.

Japanese Patent Laid-Open No. 11-301266

  As described above, ultrasonic welding is employed as a method for joining and fixing the conventional divided bodies, but in this ultrasonic welding processing method, the equipment cost for performing ultrasonic welding is increased, In addition to causing an increase in processing costs, it is not possible to visually check whether or not the welding process that satisfies the mounting strength is performed during the assembly work, so the welding strength is not stable and a fixed mounting strength cannot be guaranteed. It is pointed out at the same time.

  This invention has been made in view of such circumstances, in order to configure the interior parts by joining and fixing the divided parts of the resin parts, replacing the terminal portion of the divided parts with ultrasonic welding, By adopting a locking claw attachment structure, the equipment cost is reduced, and the work can be done while visually checking during assembly work. The purpose is to provide interior parts for automobiles.

  In order to solve the above-described problems, the present invention provides an automotive interior part in which a divided structure formed by joining divided bodies is used, and the divided body on one side is used as a joint structure at a terminal portion of the divided bodies. Has an opening, an overhang piece is formed behind the opening, and a locking claw that locks the opening edge is formed on the other divided body. The two divided bodies are fixed while being urged in the direction.

  Here, the interior parts can be applied to door trims, rear side trims, rear parcel shelves, roof trims, luggage side trims, and the like. In the case of a door trim having an upper and lower split structure, the divided body is a door trim upper and a door trim lower. Applicable to body and left and right divided body. As for the joining structure of the divided bodies, the divided bodies are wrapped together, and an opening is provided on one side and a locking claw is provided on the other side, and a locking claw is engaged at the edge of the opening. An overhang piece for biasing in the wearing direction is provided.

  Therefore, according to the present invention, the terminal portions of the divided bodies are wrapped, the locking claw provided on one side of the wrap portion is inserted into the opening on the other side, and the locking claw is engaged with the overhang piece in the engaging direction. By energizing, the joining structure can be confirmed by visual observation, and the conventional welding process that increases the equipment cost can be eliminated, so that the equipment cost can be reduced.

  Next, in a preferred embodiment of the present invention, a contact rib is formed on the back side of the locking claw, and the contact rib is formed in a slit that is opened to give flexibility to the overhang piece. The position restriction | limiting of the up-down direction of a latching claw is performed by accommodating. And according to this embodiment, since the position of the locking claw in the vertical direction can be regulated by inserting the abutment rib provided on the back side of the locking claw into the slit, the engaging portion of the locking claw In addition, in addition to the front-rear direction and the left-right direction, the position restriction in the up-down direction can be achieved with the abutting ribs, so that it can be firmly fixed without rattling in all directions.

  As described above, according to the automotive interior part of the present invention, the divided bodies are configured by joining and fixing, and in the terminal portion of the divided bodies, the locking claw is provided on one side and the opening is provided on the other side. The locking claw is formed and locked in a state in which the locking claw is urged in the locking direction by an overhang piece provided on the edge of the opening. It is possible to visually check the state of engagement, to stabilize the mounting strength, and to eliminate the expensive welding process, to reduce the equipment cost and to bring about the cost reduction.

  Hereinafter, an embodiment in which an automotive interior part according to the present invention is applied to a door trim will be described in detail with reference to the accompanying drawings. Note that the gist of the present invention is as described in the scope of claims, and the contents of the embodiments described below are merely examples of the present invention.

  FIG. 1 to FIG. 5 show an embodiment of the present invention. FIG. 1 is a perspective view of an automotive door trim to which an automotive interior part according to the present invention is applied as viewed from the indoor side, and FIG. FIG. 3 is an explanatory view showing the structure of the joint portion at the terminal portion of the door trim center and the door trim lower in the door trim for the automobile, FIG. 4 is a sectional view showing the structure of the terminal portion, FIG. 5 is an explanatory view showing a modified example of the joint structure.

  1 and 2, an automobile door trim 10 has an armrest 21 attached to an occupant's elbow resting at the center of the surface of the door trim main body 20. A pocket for storing equipment is provided below the armrest 21. An opening 22 is opened, and a pocket back cover 23 shown in FIG. 2 is fixed to the back side thereof. Further, a speaker grille 24 is provided on the front side of the pocket opening 22 so as to be integrated with the door trim body 20 or separately. Yes.

  More specifically, in the present invention, the door trim body 20 is composed of an upper and lower three-part body of a door trim upper 30, a door trim center 40, and a door trim lower 50. It is characterized in that the joint structure between the two at the terminal portion can be implemented at low cost and a stable mounting strength is ensured. It should be noted that ultrasonic welding is applied at points other than the joint structure to which the method of the present invention is applied at the end portion of the door trim center 40 and the door trim lower 50, and the joint between the door trim upper 30 and the door trim center 40. For example, welding bosses are erected at regular pitch intervals along the joint line of the door trim upper 30, and ultrasonic bosses are inserted into the corresponding mounting holes of the door trim center 40 to perform ultrasonic welding caulking at the tip. As a result, the door trim upper 30 and the door trim center 40 are fixed at each welding point indicated by reference numeral 31 in FIG. The joint structure of the general part of the door trim center 40 and the door trim lower 50 is performed in the same manner, and the same welding process is adopted for fixing the pocket back cover 23 to the door trim lower 50.

  Next, the joint structure of the terminal portion of the door trim center 40 and the door trim lower 50 will be described with reference to FIGS. 3 and 4. The door trim center 40 and the door trim lower 50 are joined in a wrap shape at the terminal portion. A rectangular opening 41 is opened at 40, and an overhang piece 42 is formed at the center side by opening slits 43 on the upper and lower sides.

  On the other hand, with respect to the door trim lower 50, a locking claw 51 for engaging with the opening 41 is formed to project, and the locking claw 51 is inserted into the opening 41 of the door trim center 40 and provided behind the opening 41. The overhanging piece 42 presses the back surface of the locking claw 51 in an overhang shape, whereby the engagement structure by the locking claw 51 is firmly positioned along the two directions of the front-rear direction and the left-right direction. Moreover, since the operation | work which attaches the latching claw 51 to the opening 41 can be confirmed visually, compared with the conventional ultrasonic welding process, it can stabilize mounting strength and abolishes the ultrasonic welding equipment of this part. It can contribute to cost reduction.

  Next, FIG. 5 shows a modified example of the present invention. In this modified example, the abutting ribs 52 are integrated on the upper and lower sides of the locking claw 51 provided on the door trim lower 50, and the abutting ribs 52 are It fits into a slit 43 extending on the upper and lower sides of the opening 41 provided in the door trim center 40. Accordingly, since the abutment rib 52 is fitted in the slit 43, the movement of the locking claw 51 is restricted in the vertical direction, so that the locking claw 51 is restricted not only in the front-rear and left-right directions but also in the vertical position. Since the position is restricted in all directions, the generation of rattling noise can be eliminated.

  Although the embodiment is applied to the door trim 10 having the upper and lower divided structure, the embodiment can be applied to the joint structure of the terminal portion between the door trim upper and the door trim lower divided body having the upper and lower divided structures, and is a part other than the door trim. It can be applied to all interior parts composed of divided bodies.

It is the perspective view which looked at the door trim for vehicles which applied the interior parts for vehicles concerning the present invention from the room inner side. It is the perspective view which looked at the door trim shown in FIG. 1 from the panel side. It is explanatory drawing which shows the structure of the terminal part in the door trim center and door trim lower shown in FIG. FIG. 4 is a sectional view taken along line IV-IV in FIG. 3. It is explanatory drawing which shows the engaging structure of the latching claw in the modification of the interior component for motor vehicles which concerns on this invention. It is a perspective view which shows the conventional split type door trim. It is the perspective view which looked at the conventional split type door trim from the back side. It is explanatory drawing which shows the structure of the junction part of the division bodies in the conventional division | segmentation type door trim.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Automotive door trim 20 Door trim body 21 Armrest 22 Pocket opening 23 Pocket back cover 24 Speaker grill 30 Door trim upper 31 Welding point 40 Door trim center 41 Opening 42 Overhang piece 43 Slit 50 Door trim lower 51 Locking claw 52 Retaining rib

Claims (2)

In the automotive interior part (10) in which the divided structure formed by joining the divided bodies (30, 40, 50) is employed,
As a joint structure at the end portion of the divided bodies (30, 40, 50), an opening (41) is opened in the divided body (40) on one side, and an overhang piece (42) is provided behind the opening (41). The other split body (50) is formed with a locking claw (51) that engages with the edge of the opening (41), and the overhanging piece (42) engages the locking claw (51). An interior part for an automobile, wherein both divided bodies (40, 50) are fixed while being urged in a wearing direction.   An abutment rib (52) is formed on the back side of the locking claw (51), and the abutment rib is placed in a slit (43) provided to give flexibility to the overhang piece (42). The interior part for automobiles according to claim 1, wherein the position of the locking claw (51) in the vertical direction is regulated by accommodating (52).

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