JP4256541B2 - Parts mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in an attachment structure for attaching an interior / exterior part of an automobile such as a garnish to a predetermined panel via a clip with one touch.
[0002]
[Prior art]
As this type of conventional mounting structure, there is one shown in Japanese Patent Laid-Open No. 3-177607.
The conventional mounting structure is not specifically shown, but a part such as a garnish with a boss integrally projecting on the back surface is attached to a panel having a mounting hole through a U-shaped metal clip. For the boss side, rib walls are integrally formed on both side edges thereof, and protrusions are formed on the boss side surfaces between the rib walls. A pair of spring pieces projecting upwards and outwards at the center of both side walls that define the frame and elastically locking to the edge of the panel mounting holes are cut out, and the lower inner side is located on the upper side where the flanges on both side walls exist. It is the structure which forms a pair of check claw which inclines in the direction of bending.
[0003]
And when actually attaching parts such as garnish to the panel, first get the guide of the rib wall, and insert the boss on the part side between the both side walls of the metal clip, the metal clip on the protrusion of the boss And the metal clip is assembled to the boss side of the component.
[0004]
Therefore, when the metal clip is pushed into the mounting hole drilled on the panel side while maintaining the state as it is, the pair of spring pieces bend inward and pass through the mounting hole, Since the upper end is elastically locked to the hole edge of the attachment hole, the component is attached to the panel side with one touch.
[0005]
Therefore, under such a conventional attachment structure, it is possible to attach the component to the panel by using the elastic force of the metal clip, so that there is an advantage that a correspondingly strong attachment state can be ensured. When the panel is formed of a metal material such as an iron plate, an unpleasant rubbing noise is easily generated between the mounting hole of the metal panel and the metal clip when the panel is pushed.
[0006]
[Problems to be solved by the invention]
Therefore, in this field, various attempts have been made to use resin clips instead of metal clips. However, compared to metal clips, this resin clip cannot necessarily have such a strong mounting force. When the components are in the mounted state, there is a risk that the components will inadvertently rattle due to insufficient mounting force, or in the worst case, the components may fall off the panel.
[0007]
[Means for Solving the Problems]
The present invention was developed in order to effectively solve the problems caused by using such a resin clip. The invention according to claim 1 is directed to a component having a boss projecting through a U-shaped resin clip. A mounting structure for mounting to a panel having a mounting hole formed therein, a concave portion is formed on a side surface of the boss, and a center in the width direction of the side wall defining the U shape for the resin clip. A locking piece having a locking claw for locking in the recess is extended from the U-shaped valley side to the U-shaped opening side, and the locking claw of the locking piece is a resin clip. When it is in the free state, it retracts from the U-shaped center line, and when the part is attached to the panel, the resin clip is pushed by the edge of the mounting hole of the panel, thereby moving forward than the free state, A configuration that penetrates deeply into the recess is employed.
[0012]
Therefore, in the invention according to claim 1, since the locking claw of the lock piece is retracted from the U-shaped center line in the free state of the resin clip, the boss of the part is attached to the resin clip. The work of inserting into the U-shape is easy, and conversely, in the state where the part is attached to the panel, it advances more than the free state and deeply enters the recess, so that the assembly strength to the boss is increased and the part is When removing from the panel, the resin clip does not remain on the panel side but remains on the component side, so that the removal work is facilitated.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to a preferred embodiment shown in the drawings. The mounting structure according to this embodiment is also a part such as a garnish in which a boss 2 is integrally projected on the back surface as shown in FIG. 1 is presupposed to be attached to a metal panel P having a mounting hole H formed through a U-shaped resin clip 11, but the following configuration is adopted as a feature. In the point.
[0015]
First, for the boss 2 on the component 1 side, as shown in the drawing, rib walls 3 are continuously formed on both side edges, and a penetrating shape for locking a locking claw of a lock piece described later on the lower side is formed. Although the structure which forms the recessed part 4 is employ | adopted, about the said recessed part 4, you may be a thing of the state which was simply depressed from the both sides | surfaces of the boss | hub 2 without letting it penetrate.
[0016]
Further, as shown in FIG. 2, the resin clip 11 has a pair of lock pieces 13 that can be bent independently through vertical slits 14 at the center of both side walls 12 that define the U-shape. Overhanging shoulders 15 are formed on both side portions 12a of each side wall 12 divided by the lock piece 13 and locked to the hole edges of the mounting holes H of the panel P. A configuration is adopted in which the upper ends of both side portions 12a are integrally connected by an outward flange 16 having a U-shape having a space 17 extending from the slit 14 on the inside.
[0017]
In addition to this, the free end portions of the pair of lock pieces 13 are extended into the space 17 of the outward flange 16 while being thickened, and a taper cut surface for guide is provided on the inner surface of the extended free end portion 13a. 18 is formed oppositely, and the base end side is similarly thickened, and the locking claw 19 that locks the penetrating recess 4 is formed on the inner surface on the base end side. The structure to be adopted is adopted. Therefore, the extension free end portions 13a of the pair of lock pieces 13 are given a length that can interfere with the inner peripheral surface of the mounting hole H of the panel P.
[0018]
In addition, both side parts 12a of each side wall 12 divided by the pair of lock pieces 13 are located outside the lock pieces 13, and the overall thickness is thinner than that of the lock pieces 13. In the present embodiment, in particular, a portion directly below the outward flange 16, in other words, a portion corresponding to the inner peripheral surface of the mounting hole H of the panel is employed together with a structure that is thinner than other portions. is doing.
[0019]
Therefore, compared to the lock piece 13, as shown in the drawing, a large space allowing inward bending is interposed inside the side portions 12a of the side walls 12, so that the mounting holes of the panel P are provided. When pushing into the H, it is possible to obtain a large deflection of the both side portions 12a without using such a great force, and to push in smoothly, and at the portion directly below the outward flange 16, the shape of the outward flange 16 is obtained. The torsional deformation is relatively easily promoted by the thin wall.
[0020]
Therefore, when the resin clip 11 is used to attach the part 1 such as garnish to the panel P, first, as shown in FIG. 3, the rib wall 3 on the boss 2 side and the taper cut surface on the lock piece 13 side. 18, when the boss 2 is inserted between the pair of lock pieces 13, the tip of the boss 2 comes into contact with the opposing locking claw 19, and the pair of lock pieces 13 together with the side walls 12 is connected to the bottom portion 20. When the distal end passes through the locking claw 19 with the proximal end side continuously provided with the fulcrum as a fulcrum, the distal end abuts the bottom 20 of the resin clip 11 and the boss Since each latching claw 19 is latched in the 2 recessed part 4 from both sides, the resin clip 11 is assembled | attached to the boss | hub 2 side of the components 1 by this.
[0021]
Then, as in the prior art, as shown in FIG. 4A, if the resin clip 11 is pushed into the mounting hole H of the panel P, the side walls 12 themselves will now use the inner space. However, the parts 1 are bent inwardly and pass through the mounting holes H, and the protruding shoulders 15 of both side portions 12 are elastically locked to the hole edges of the mounting holes H of the panel P. In this state, the outer surfaces of the extended free ends 13a of the pair of lock pieces 13 are in contact with the inner peripheral surface of the mounting hole H as shown in the drawing. Thus, the thick inner surface is automatically pressed until it approaches or comes into contact with the side surface of the corresponding boss 2.
[0022]
By pressing the extended free end portion 13a of the lock piece 13, a reliable locking state of the locking claw 19 on the base end side of the lock piece 13 with respect to the concave portion 4 of the boss 2 is ensured, and the resin clip 11 is pulled out. Even if an external force is applied, it will be possible to counter this, and at the same time, even if an unexpected external force is applied to the part 1 in the lateral direction (arrow direction in the figure), the lock piece to which the boss 2 corresponds. 13, it is possible to effectively prevent deformation of the entire resin clip 11 in the same direction including both side walls 12 against the external force. No fear of falling off. Therefore, even if an unexpected external force is continuously applied for a long time, the side walls 12 of the resin clip 11 do not receive an excessive force, and the overhanging shoulder 15 is always attached to the hole of the mounting hole H of the panel P. Since the state locked to the edge is ensured, a reliable mounting state of the component 1 can be provided in any state.
[0023]
In addition, in this state, as shown in FIG. 4B, the thick inner surface on the base end side of the lock piece 13 is also opposed to the side surface of the boss 2 below the recess 4. In addition to the deformation of the resin clip 11 in the lateral direction, an unnecessary inclination in the mounting hole H of the resin clip 11 can also be prevented.
[0024]
Further, although depending on the size of the component 1, normally, a plurality of bosses 2 project in parallel on the component 1 side, and a plurality of mounting holes H corresponding to the bosses 2 are provided on the panel P side. In this case, if there is a deviation in parallelism between the bosses 2, when the resin clip 11 is pushed into the mounting hole H of the panel P, the deviation is It will be forced.
[0025]
However, in the present embodiment, as described above, the extended free end portion 13a of the lock piece 13 that will be located in the center is allowed to face in the space 17 of the outward flange 16 in a free state, and Since the thickness of the portion directly below the outward flange 16 is reduced, the outward flange 16 side of the resin clip 11 is bossed in the mounting hole H of the panel P in accordance with the deviation in parallelism as shown in FIG. 2 is twisted together so that the deviation can be effectively absorbed, and from this point, the reliable mounting state of the component 1 can be guaranteed. In this case, since the pair of lock pieces 13 are located at the center of the resin clip 11, their functions are never hindered, and conversely, torsional deformation on the outward flange 16 side is promoted. It will be.
[0026]
In the above embodiment, as a means for bringing the inner surface of the extended free end portion 13a of the lock piece 13 and the side surface of the boss 2 as close as possible to each other, the extension free end portion 13a of the lock piece 13 Although the inner surface is thickened toward the side surface of the boss 2, the present invention is not limited to this, and as shown in FIG. It goes without saying that the same effect can be obtained that the resin clip 11 can be prevented from being deformed in the lateral direction even if it becomes thicker in the direction of the extended free end 13a.
[0027]
【The invention's effect】
As described above, according to the present invention, by adopting the above configuration, the locking claw of the lock piece recedes from the U-shaped center line in the free state of the resin clip under the first aspect. The work of inserting the boss of the part into the U-shape of the resin clip is easy, and conversely, when the part is attached to the panel, it advances more than the free state and goes deeper into the recess. When the component is removed from the panel, the resin clip does not remain on the panel side but remains on the component side, so that the removal work is facilitated.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a main part of a mounting structure according to an embodiment of the present invention.
2A is a plan view of a resin clip, FIG. 2B is a side view thereof, FIG. 2C is a cross-sectional view taken along line AA in FIG. 2A, and FIG. 2D is a cross-sectional view taken along line BB in FIG. is there.
FIG. 3 is an explanatory view showing a state in which a boss of a component is inserted into a resin clip.
4A is a cross-sectional view showing a state in which a component is attached to a panel via a resin clip, and FIG. 4B is a cross-sectional view taken along line CC in FIG. 4A.
5A and 5B are explanatory views showing a state in which the outward flange side of the resin clip is twisted and deformed in the mounting hole.
FIG. 6 is a cross-sectional view showing another embodiment of the present invention with a component attached to a panel via a resin clip.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Parts 2 Boss 3 Rib wall 4 Recess 11 Resin clip 12 Side wall 12a Side part 13 Lock piece 13a Extension free end part 14 Vertical slit 15 Overhanging shoulder 16 Outward flange 17 Space 18 Taper cut surface 19 Locking claw 12 Bottom part P Panel H Mounting hole

Claims (1)

  A mounting structure for mounting a part with a boss projecting to a panel with a mounting hole formed through a U-shaped resin clip. Extends a lock piece having a locking claw locked in the recess from the U-shaped valley side toward the U-shaped open side at the center in the width direction of the side wall defining the U-shape. The locking claw of the lock piece is retracted from the U-shaped center line when the resin clip is in a free state, and when the component is attached to the panel, the resin clip is attached to the hole of the mounting hole of the panel. A structure for mounting a component, which is pushed forward by an edge to move forward from a free state and deeply enter the recess.

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