JP2004239316A - Mounting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure waterproofing performance of a mounting structure part by forming a receiving part of a clip in a sealed structure except for an opening part where a rib is inserted. <P>SOLUTION: This mounting structure comprises the clip 10 of resin inserted to be incorporated to a mounting hole on the base plate side where an installation part is installed, and the rib 42 provided on the installation part side and detachably inserted to a hollow receiving part 18 of the clip 10. On two mutually facing wall surfaces 20 in the receiving part 18 of the clip 10, engagement protrusions 22 engaged with the rib 42 are respectively provided. The engagement protrusions 22 are disposed at mutually displaced positions. Protruded quantity of the engagement protrusions 22 is set to be about half the distance between the two mutually facing wall surfaces 20 in the receiving part 18. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a detachable mounting structure using a clip mounted on a substrate such as a vehicle body panel and a rib provided on a mounting component side.
[0002]
[Prior art]
For this type of technology, for example, a clip structure disclosed in Patent Document 1 has already been proposed. In this technique, a clip made of resin is assembled into a mounting hole formed in a body panel, and a rib formed on a mounting component side is inserted into a receiving portion of the clip. Inwardly protruding engagement projections are formed on opposite wall surfaces inside the receiving portion. On the other hand, the rib is formed with an engagement hole capable of engaging with both engagement protrusions. By inserting the rib into the receiving portion of the clip, the engagement protrusion engages with the engagement hole. Further, by strongly pulling out the rib from the receiving portion of the clip, the engagement projection and the engagement hole are disengaged. Thereby, attachment / detachment of the attachment component to / from the body panel is possible.
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 2001-330016
[Problems to be solved by the invention]
The clip is an integrally molded product made of resin, and the molding die is roughly classified into a die for molding the outer shape and a punching die for molding the receiving portion. And since there is a pair of engaging projections in the receiving part, the punching die cannot be pulled out in one direction as it is. As a countermeasure, there is a means in which the punching die is divided into two parts to form a die structure which is distributed to both sides of the engaging projections, or a means for separately providing a slide die which slides in a direction perpendicular to the pulling direction of the punching die. In either case, a hole is formed in the receiving portion of the clip by using one of the punching dies or the sliding die, in addition to the opening portion into which the rib is inserted, and the inside and outside holes. As a result, the waterproofness of the clip cannot be ensured, and the case where waterproofness is required between both sides of the body panel cannot be handled.
An object of the present invention is to solve the conventional problem, and an object of the present invention is to make a receiving portion of a clip a sealed structure except for an opening portion into which a rib is inserted, and to ensure waterproofness of a mounting structure portion. is there.
[0005]
[Means for Solving the Problems]
The present invention has been made to achieve the above object.
According to the first aspect of the present invention, a resin clip which is assembled by being inserted into a mounting hole on a substrate side on which a mounting component is mounted, and a hollow receiving portion of the clip provided on the mounting component side. An attachment structure comprising a detachably inserted rib, and two opposing wall surfaces in a receiving portion of the clip are provided with engagement projections engageable with the rib. These engagement projections are arranged at positions shifted from each other, and the amount of projection of both engagement projections is set to approximately half the distance between opposing wall surfaces in the receiving portion.
According to this configuration, when the clip is molded, when the punching die is pulled out from the receiving portion or when the rib is pulled out from the receiving portion of the clip in use, the portion where the engaging projection on the opposed wall surface is slightly deformed. By itself, the punch or the rib is pulled out over both engaging projections. That is, it is possible to forcibly remove the punching die or the rib from the clip receiving portion (so-called “forced removal”). Therefore, unlike the case where a slide mold or the like is used to form both engagement projections, it is possible to avoid forming an unnecessary hole in the receiving portion. As a result, the receiving portion has a hermetically closed structure except for the opening portion into which the rib is inserted, and it is possible to cope with a portion where waterproofness is required. In addition, in the use state, it is possible to repeat attachment and detachment of the mounted component to and from the board.
[0006]
The invention according to claim 2 is the mounting structure according to claim 1, wherein both the engagement projections of the clip are arranged at positions shifted from each other in the width direction of the receiving portion.
Thereby, when the punching die or the rib is pulled out from the receiving portion of the clip, it becomes easier for these to pass through both the engagement projections.
[0007]
A third aspect of the present invention is the mounting structure according to the first or second aspect, wherein the thickness of the rib on the mounting component side is substantially the same as the distance between opposing wall surfaces in the receiving portion of the clip. And an engagement hole penetrating in the thickness direction. Both engagement projections of the clip are set so as to engage with the engagement holes from opposite directions.
With this configuration, the configuration for extracting the rib from the clip receiving portion is simplified. In addition, the engagement hole of the rib may be divided into two corresponding to the engagement protrusion of the clip, or may be connected to one.
[0008]
According to a fourth aspect of the present invention, there is provided the mounting structure according to the third aspect, wherein a portion between the clip receiving portion and the rib, and a portion between the engaging protrusion of the clip and the engaging hole of the rib, A predetermined clearance is provided in each width direction.
Thereby, the displacement in the width direction between the clip attached to the substrate side and the rib on the mounted component side can be absorbed.
[0009]
A fifth aspect of the present invention is the mounting structure according to the first, second, third or fourth aspect, wherein the mounting component is a resin panel, and the rib is formed integrally with the resin panel. At the base of the rib near the border with the resin panel, a notched portion is formed.
The underfill can prevent sinks from occurring on the surface of the resin panel.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described.
FIG. 1 is a plan view showing a clip used in the mounting structure of the present invention. FIG. 2 is a bottom view showing the clip. FIG. 3 is a front view showing the clip. FIG. 4 is a side view showing the clip. FIG. 5 is a cross-sectional view taken along the line AA of FIG. As shown in these drawings, the clip 10 is an integrally molded product made of a synthetic resin material. The clip 10 includes a hollow body 12 having a rectangular planar shape, and a dish-shaped stabilizer 14 extending outwardly around the base.
[0011]
The body 12 is a portion to be inserted into a mounting hole 32 of a body panel 30 (substrate) described later. The inside of the body 12 is a receiving portion 18 into which a rib 42 of a mounting component 40 described later is inserted. On the bottom surface of the clip 10, an opening 18a of the receiving portion 18 is located. Except for the opening 18a, the receiving portion 18 is sealed. The outer surface on the tip end side (the upper end side in FIGS. 3 to 5) of the body 12 is a tapered surface 12 a for guiding the insertion of the body 12 into the mounting hole 32. The peripheral surface of the opening 18a in the receiving portion 18 is a tapered surface 18b for guiding the insertion of the rib 42 into the receiving portion 18.
[0012]
In the body 12, on both sides which are long sides in the plan shape, good recesses 12 b protruding into the receiving portion 18 are respectively provided. These concave portions 12b are arranged so as to be shifted from each other in a direction along the two measuring portions of the body portion 12 (the width direction of the receiving portion 18) (FIGS. 1 and 2). Claws 16 are formed on the outer wall portions of the two concave portions 12b near the base of the body portion 12, respectively. These claws 16 have appropriate elasticity (flexibility) together with the individual outer wall portions, and are capable of moving in and out of the recess 12b.
[0013]
In the receiving portion 18, the rear surfaces of the concave portions 12 b projecting inward form two wall surfaces 20 facing each other at a position shifted in the width direction of the receiving portion 18. The rib 42 when inserted into the receiving portion 18 is located between the two wall surfaces 20. Therefore, the thickness of the rib 42 is set to be substantially the same (slightly smaller) as the distance between the two wall surfaces 20. Engagement projections 22 protruding inward of the receiving portion 18 are provided at the respective wall surfaces 20 at individual locations. In other words, both engagement projections 22 project at positions shifted from each other in the width direction of the receiving portion 18.
[0014]
The protrusion amount of both engagement protrusions 22 is set to a dimension slightly exceeding half of the distance between two opposing wall surfaces 20 (thickness of rib 42) (FIGS. 2 and 5). Further, in both the engagement projections 22, the insertion surface 22a on the side facing the opening portion 18a of the receiving portion 18 and the removal surface 22b on the back side of the receiving portion 18 are each set to a predetermined inclination angle (FIG. 5). ). Incidentally, the respective angles (the acute angle side) of the insertion surface 22a and the removal surface 22b with respect to the wall surface 20 are set to about 25 ° and about 70 °.
[0015]
FIG. 6 is a perspective view illustrating the rib 42 of the mounting component 40. FIG. 7 is a longitudinal sectional view of FIG. The mounting component 40 is, for example, a resin panel (torf cover) attached for decoration along a weather strip at a hatchback opening of a vehicle, and the ribs 42 are integrally formed products provided at a plurality of locations on the back surface of the resin panel. is there. The rib 42 has two engagement holes 44 penetrating in the thickness direction. When the rib 42 is inserted into the receiving portion 18 of the clip 10, the corresponding engaging projections 22 engage with the two engaging holes 44 from opposite directions. The distal end of the rib 42 has a tapered surface 42a, and reinforcing portions 42b are integrally formed on both sides of the rib 42. Further, the rib 42 is formed with a notched portion 42c at a base near the boundary with the mounting component 40 (FIG. 7). The underfill 42c can prevent sinks from being formed on the surface of the mounting component 40 during molding.
[0016]
FIG. 8 is a cross-sectional view illustrating a mounting structure of the mounting component 40 (mounting component) to the body panel 30 (substrate) of the vehicle. Therefore, the procedure of the operation will be mainly described with reference to FIG.
First, the body 12 of the clip 10 is inserted into the mounting hole 32 of the body panel 30 shown in FIG. With this insertion, the claws 16 on the outer side of the body 12 pass through the mounting holes 32 due to individual elasticity (flexibility) and engage with the inner surface of the body panel 30. Thereby, the clip 10 is assembled on the body panel 30 side, and is held in that state. In this state, the periphery of the stabilizer 14 is in contact with the outer surface of the body panel 30 due to its elasticity. Thereby, the assembled state of the clip 10 to the body panel 30 is stabilized.
[0017]
Next, the rib 42 of the mounting component 40 is inserted into the receiving portion 18 of the clip 10 from the opening 18a side. With this insertion, the tapered surface 42a of the rib 42 advances along the insertion surface 22a of both the engagement projections 22. As a result, the ribs 42 enter between the wall surfaces 20 while bending the wall surfaces 20 outward. As a result, the two engaging projections 22 are engaged with the engaging holes 44 of the rib 42. By this engagement, the clip 10 and the rib 42 are held in a connected state, and as a result, the mounting state of the mounting component 40 on the body panel 30 is maintained.
[0018]
In a state where the rib 42 is inserted into the receiving portion 18, the space between the reinforcing portion 42 b of the rib 42 and the inner surface of the receiving portion 18 and the space between both the engagement protrusions 22 and the engagement hole 44 are shown in FIG. 2. There is clearance S. In the range of the clearance S, the displacement in the width direction between the clip 10 (that is, the mounting hole 32 of the body panel 30) and the rib 42 of the mounting component 40 can be absorbed.
[0019]
When removing the mounting component 40 from the body panel 30, the mounting component 40 is strongly pulled. As a result, the edge of the engagement hole 44 in the rib 42 comes into contact with the removal surface 22b of each of the engagement protrusions 22 and moves while bending the wall surface 20 outward. As a result, the engagement hole 44 passes through the engagement protrusion 22, and the rib 42 is extracted from the receiving portion 18. As a result, the mounting component 40 can be removed while the clip 10 is left on the body panel 30 side. The ribs 42 slightly displace the wall 20 due to the fact that the two engaging protrusions 22 are arranged at positions shifted from each other and that the respective protrusion amounts are set to approximately half the distance between the wall surfaces 20. It is forcibly extracted only by bending.
[0020]
This means that even when the clip 10 is formed, the mold can be forcibly removed from the receiving portion 18 by slightly deforming the two wall surfaces 20, so-called “forced removal” becomes possible. As in the past, when a slide mold or the like is used for molding the clip, a slide hole remains in the body of the clip. On the other hand, the receiving portion 18 of the clip 10 in the present embodiment has a closed structure except for the opening 18a. Therefore, the clip 10 has a high waterproofing function, and is optimal when waterproofness is required between both sides of the body panel 30.
[Brief description of the drawings]
FIG. 1 is a plan view showing a clip. FIG. 2 is a bottom view showing a clip. FIG. 3 is a front view showing a clip. FIG. 4 is a side view showing a clip. FIG. FIG. 6 is a perspective view showing a rib of a mounting part. FIG. 7 is a longitudinal sectional view of FIG. 6. FIG. 8 is a cross-sectional view showing a mounting structure of the mounting part on a body panel. ]
10 Clip 18 Receiving part 20 Wall surface 22 Engagement projection 30 Body panel (substrate)
32 mounting hole 40 mounting part 42 rib 44 engagement hole

Claims (5)

A resin clip that is assembled by inserting it into the mounting hole on the board side on which the mounting component is mounted, and a rib that is provided on the mounting component side and that is detachably inserted into the hollow receiving portion of the clip An attachment structure comprising: two opposite wall surfaces in the clip receiving portion each provided with an engagement protrusion engageable with a rib, and these engagement protrusions are arranged at positions shifted from each other; In addition, the mounting structure is such that the amount of protrusion of both engagement projections is set to be approximately half of the distance between opposing wall surfaces in the receiving portion. 2. The mounting structure according to claim 1, wherein both engagement projections of the clip are arranged at positions shifted from each other in a width direction of the receiving portion. 3. The mounting structure according to claim 1, wherein the thickness of the rib on the mounting component side is set to be substantially the same as the distance between opposing wall surfaces in the clip receiving portion. A mounting structure comprising an engagement hole penetrating in the direction, and both engagement protrusions of the clip are set to engage with the engagement hole from directions opposite to each other. The mounting structure according to claim 3, wherein predetermined clearances are provided between the receiving portion of the clip and the rib and between the engaging projection of the clip and the engaging hole of the rib in the width direction. Mounting structure provided. 5. The mounting structure according to claim 1, wherein the mounting component is a resin panel, and the rib is formed integrally with the resin panel. At the base close to the boundary, a mounting structure with a missing part.

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