JP2007176315A - Lid structure of storage part for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lid structure of a storage part for an automobile whereby an obverse surface panel and a reverse surface panel can be welded together easily and securely through a vibratory welding process. <P>SOLUTION: A lid 2 to open and close the opening in the storage part 1 formed in an instrument panel 6 of the automobile has the obverse surface panel 3 and the reverse surface panel 4 combined with the reverse side of the obverse surface panel 3, wherein the reverse surface panel 4 is furnished with fusion attaching pieces 41 to perform fusion attachment with the obverse surface panel 3 while the obverse surface panel 3 is furnished with a mounting arm 5 rigidly, and a plurality of welding places for the welding pieces 41 are prescribed except the neighboring area of the mounting arm 5, and an engagement part 31 is formed to guide in the vibrating direction, and the fusion attaching pieces 41 are furnished with a reinforcing rib 42 for precluding falling in at the time of welding, so that it is possible to weld together the obverse surface panel 3 and the reverse surface panel 4 easily and certainly through the vibratory welding process. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a lid structure that opens and closes an opening of a storage section provided in an instrument panel of an automobile, and particularly relates to an improvement of a lid structure of a storage section for an automobile that is joined back to back with a front panel and a back panel. It is.

The instrument panel of the car is equipped with a dashboard and audio system with instruments such as speedometers and fuel gauges, as well as a storage part for storing vehicle verifications, cards, writing instruments and other small parts. Is provided. The storage section is generally composed of an opening formed at a lower surface portion facing the passenger seat of the instrument panel, and an inner wall section formed by recessing from the opening to the inside of the instrument panel. Is configured to be opened and closed by a lid attached to the instrument panel so as to be swingable.

Such a conventional lid structure of the storage unit is formed by combining a resin-made front panel and the resin-made back panel, which are integrated with the instrument panel and subjected to the same surface treatment. . Further, as a means for joining the front panel and the back panel, a system in which the front panel and the back panel are joined together by vibration welding after combining the front panel and the back panel is proposed and put into practical use. .
JP 2003-34187 A In these vibration weldings, the bonding strength between the front panel and the back panel is insufficient due to the relationship between the surface panel made of resin and the same surface treatment in an integral shape with the instrument panel. Engaging portions (or ribs) for preventing the welding piece from collapsing are formed in a direction perpendicular to the vibration direction.

  However, even when the vibration welding method as described above is applied with a large force on the end portion of the lid body, there is a possibility that the joining end portion of the front panel and the back panel is peeled off. In particular, when the contact angle between the welded piece and its joining surface is small, the welded piece collapses, so that an appropriate welding allowance cannot be ensured and the joining strength is insufficient.

  The present invention has been made to solve the above-described conventional problems, and an object of the present invention is for an automobile that enables a front panel and a back panel to be easily and reliably welded by vibration welding. An object of the present invention is to provide a lid structure for a storage unit.

  In order to achieve the above object, the invention according to claim 1 of the present invention is a lid for an automobile storage unit including a lid for opening and closing an opening of a storage unit provided in an instrument panel of an automobile, The lid body has a front panel that has been subjected to the same surface treatment as the instrument panel, and a rear panel combined with the rear surface of the front panel, and the rear panel has a welding piece for welding to the front panel. A mounting member is integrally formed on the front panel, and the welding position of the welding piece is defined at a plurality of locations excluding the vicinity of the mounting member, and the welding piece is relatively moved in the vibration direction of vibration welding. An engaging portion is formed to guide the welding piece, and a reinforcing rib is formed on the surface of the welding piece to prevent collapse of the welding piece in a portion where the engaging portion is not formed. Abutted against the panel Wherein the welded surface panel and the back panel by vibration welding.

  According to a second aspect of the present invention, in the lid structure for an automobile storage portion according to the first aspect, the welding piece on which the reinforcing rib is formed has a contact angle with the surface panel of 70 degrees or less.

  According to a third aspect of the present invention, in the lid structure of the automobile storage portion of the first aspect, the welding piece on which the reinforcing rib is formed has a contact angle with the surface panel of 60 degrees or less.

According to the present invention, there is provided a lid for an automobile storage section including a lid that opens and closes an opening of the storage section provided in the instrument panel of the automobile, and the lid has the same surface treatment as that of the instrument panel. And a rear panel combined with the rear surface of the front panel. A welding piece for welding to the front panel is formed on the rear panel, and a mounting member is integrated with the front panel. An engagement portion is formed to define the welding position of the welding piece at a plurality of locations excluding the vicinity of the attachment member and guide the welding piece so that the welding piece can be moved relatively in the vibration direction of the vibration welding. Since the piece has a structure in which a reinforcing rib is formed to prevent collapse of the welding piece at the portion where the engaging portion is not formed, the front panel and the back panel can be easily and vibrationally welded. Sure Lid structure for an automobile for receiving part that allows the can welding can be obtained in.

  Hereinafter, the best mode for carrying out the present invention will be described.

  In the lid structure of the storage part for an automobile according to the present invention, the reinforcing rib formed on the welding piece is provided in a portion where the engaging part corresponding to the welding piece is not formed. By adopting this configuration, it is possible to prevent a decrease in welding strength without being affected by the presence or absence of the engaging portion.

  By defining the welding position of the welding piece on the front panel and forming an engagement part for guiding the welding, the influence on the design surface of the front panel is reduced compared to the case where the welding piece is formed on the front panel. Can do.

  When a mounting member (mounting arm) is formed on the instrument panel integrally with the front panel, a slide core or the like is used to form the mounting member, so a portion where the engaging portion cannot be formed on the front panel is generated. To do. For this reason, welding strength can be effectively ensured by forming a reinforcing rib in the welding piece of the back panel corresponding to this part. Further, the reinforcing angle can be reduced more efficiently by forming the reinforcing rib only in the portion where the contact angle between the welded piece and the panel surface to be welded is 70 degrees or less, preferably 60 degrees or less. Can be prevented.

  The minimum contact angle during vibration welding is preferably 20 degrees or more, and more preferably 30 degrees or more.

  Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an instrument panel having an automobile storage portion with a lid structure according to the present invention, FIG. 2 is a perspective view of an automobile storage portion with a lid structure according to the present invention, and FIG. 3 is a front panel of the present invention. FIG. 4 is a perspective view of the back panel of the present invention, and FIG. 5 is a cross-sectional view taken along the line AA of FIG.

  FIG. 1 shows an instrument panel having an automobile storage portion having a lid structure according to the present invention. The storage portion 1 provided in the instrument panel has a design shape having a large curvature on the upper side in order to match the design shape of the instrument panel. In FIG. 2, a storage body 10 for storing articles is provided on the rear side of the storage unit 1, and a lid 2 is provided on the entire surface. On both side surfaces of the lid 2, mounting arms 5 are formed as mounting members that are swingably mounted to the storage body 10.

FIG. 3 shows the back side of the front panel 3, and mounting arms 5 are formed integrally with the front panel 3 on both the left and right sides. The movement of the welding piece 41 formed on the back panel 4 (see FIG. 4) in the vertical direction in the drawing is restricted at a substantially central part of the back surface of the front panel 3, and can be relatively slightly moved in the vibration direction of vibration welding. Thus, the engaging portion 31 that guides is provided vertically. The engaging portion 31 is a Δ-shaped protrusion of about 5 mm, and is hardly affected by sink marks or the like on the surface (design surface) of the front panel 3. Attachment arms 5 for attachment to the storage body 10 are provided on the left and right sides of the front panel 3. Since the slide core is used in the mold in the vicinity of the mounting arm 5 for removing the thickness of the mounting arm 5, the engaging portion 31 cannot be formed. (Figure 3 hatched core slide range (only the left part is shown))
FIG. 4 shows the side of the back panel 4 that is to be welded to the front panel, and a welding piece 41 for welding to the front panel 3 is formed on the entire back panel 4 continuously in the lateral direction. The weld piece 41 corresponding to a portion where the engagement portion 31 is not formed on the front panel 3 at a place where the curvature of the upper side of the back panel 4 is small and the contact angle between the weld piece 41 and the front panel 3 is 70 degrees or less. Reinforcing ribs 42 are formed. The reinforcing rib 42 prevents the welding piece 41 from falling down due to a small contact angle between the welding piece and the front panel when performing vibration welding. The reinforcing rib 42 is formed so as to reach the upper part of the welding piece 41 while leaving a welding margin to the front panel 3, and has a Δ shape or a trapezoidal shape. Moreover, the vertical rib for raising the intensity | strength of the whole back panel is provided in the vertical direction continuously. The vertical ribs 43 are formed at such a height that they abut against the front panel 3 and are not buffered during vibration welding. Note that reinforcing ribs 42 are formed continuously with the vertical ribs 43 at the two positions on the left side of the drawing.

  FIG. 5 shows a section AA having the reinforcing rib 42 of FIG. Reinforcing ribs 42 are formed only on the welding piece 41 in the upper part where the contact angle between the welding piece 41 and the front panel 3 is small. This contact angle is about 50 degrees. Further, as described above, it is formed so as to reach the upper part of the welding piece 41 while leaving the welding allowance to the front panel 3, and has a Δ shape.

  The front panel 3 and the back panel 4 configured as described above were set in a vibration welding apparatus that vibrates in the lateral direction of the product, and vibration welding was performed with an amplitude of about ± 1 mm to manufacture the lid body 2.

  As a result, when a test in which a force in the B direction was applied to the upper end of the surface panel 3 of the lid body 2 shown in FIG. 5 was performed, if there was no reinforcing rib 42, the one peeled at 70N provided the reinforcing rib 42. In the case, it was improved to 180N.

  In the above embodiment, the present invention is applied to the lid structure of the storage section of the automobile, but the lid structure of the storage section provided on the seat of an airplane, ship, train, etc., or the lid structure of the storage section for home use, It can be used in various fields.

The perspective view of the instrument panel of the storage part for motor vehicles of this invention. The perspective view of the accommodating part for motor vehicles of the cover body structure of this invention. The perspective view which shows the back surface side of the surface panel of this invention. The perspective view of the back surface panel of this invention. AA sectional drawing of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Storage part 2 ... Cover
3 ... Front panel 4 ... Back panel 5 ... Mounting arm (mounting member)
6 ... Instrument panel 10 ... Storage body 31 ... Engagement part 41 ... Weld piece 42 ... Reinforcing rib 43 ... Vertical rib

Claims (3)

A lid for an automobile storage unit including a lid for opening and closing an opening of the storage unit provided in the instrument panel of the automobile,
The lid has a front panel that has been subjected to the same surface treatment as the instrument panel, and a back panel combined with the back of the front panel,
A welding piece for performing welding with the front panel is formed on the back panel,
A mounting member is integrally formed on the front panel, and the welding position of the welding piece is defined at a plurality of positions excluding the vicinity of the mounting member, and the welding piece is relatively moved in the vibration direction of vibration welding. An engaging portion is formed to guide as possible,
The welding piece is formed with a reinforcing rib for preventing collapse of the welding piece at a portion where the engagement portion is not formed,
A lid structure for a storage part for an automobile, wherein each welding piece is brought into contact with the front panel and the front panel and the rear panel are welded by vibration welding. 2. The lid structure of a storage part for an automobile according to claim 1, wherein the welding piece on which the reinforcing rib is formed has a contact angle with the surface panel of 70 degrees or less. The lid structure of the storage part for an automobile according to claim 1, wherein the welding piece formed with the reinforcing rib has a contact angle with the surface panel of 60 degrees or less.

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