JP4125808B2 - Insertion type clip - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an insertion type clip having a plurality of blade portions disposed at intervals in the axial direction of a support column.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there is an insertion type clip as a fastener used when, for example, an automobile interior material is attached to a body panel. As the insertion-type clip, for example, as disclosed in Japanese Patent Publication No. 63-27567, a circular cap-shaped head, a column that protrudes coaxially downward from the head, and a radius from the axis of the column And a blade portion extending outward in the direction, which are integrally formed of a synthetic resin material.
[0003]
In the insertion type clip having this structure, as shown in FIG. 6 which is a cross-sectional view taken along a plane orthogonal to the axis of the support column, the cross-sectional shape of the support column 11 has a cross shape. The portion 11a has a structure arranged in a cross shape, and the thin blade-like blade portion 12 extends between the wall portions so that adjacent ones of the wall portions 11a extend in the circumferential direction. It is being handed over. Therefore, four blade portions 12 are provided in the circumferential direction of the column 11.
[0004]
[Problems to be solved by the invention]
In the insertion type clip having the above structure, the diameter of a circle passing through the radially outermost end of each cross-shaped wall portion 11a is substantially equal to the inner diameter of the mounting hole H, but the blade portion 12 protrudes in the radial direction. The end portion protrudes to the outside in the radial direction from the mounting hole H to some extent. Therefore, when the column 11 is inserted into the mounting hole H of the body panel so that the interior material is fastened to the body panel with a clip, the radially extending end portion of the blade portion 12 with respect to the column 11 having a relatively high rigidity due to the cross-shaped cross-sectional shape. Is easily elastically deformed, so that the radially extending end of the blade portion 12 can face the back side of the body panel through the mounting hole H. Then, the clip is fixed by the large-diameter head (not shown) of the clip and the blade portion 12 so as to sandwich the interior material together with the body panel, and the interior material is attached to the body panel.
[0005]
However, the elastically deformed portion of the blade portion 12 at the time of insertion into the mounting hole H is a portion that protrudes radially outward from the joint portion with the wall portion 11a, and the portion near the joint portion with the wall portion 11a is particularly deformed. Since the rigidity is relatively high, there is a problem that the insertion resistance of the clip is large due to the high rigidity of the outermost end portion in the radial direction of the joint portion with the wall portion 11a, and the mounting workability by the clip is poor.
[0006]
On the other hand, as shown in FIG. 7 with the same cross section as FIG. 6, the struts 13 are formed in a flat plate shape, and a pair of blade portions 14 extending radially outward opposite to each other on both main surfaces thereof. The clip has a structure in which the wing portion 14 has both ends extending along the extending direction of the wing portion 14 so that the entire wing portion 14 is easily bent and the insertion resistance is small. However, since the guide portions at the time of insertion are two points at both ends in the width direction of the support column 13, not only is it easy to wobble at the time of insertion into the mounting hole H, but only two blade portions 14 are used as retaining force for retaining. Therefore, there is a problem that the holding power is weak.
[0007]
[Means for Solving the Problems]
In order to solve such problems and realize that it is possible to exhibit a sufficient retaining force for retaining and improve workability of mounting, in the present invention, the head and the head A column that protrudes and can be inserted into the mounting hole, and is formed so as to extend radially outward from the axial center portion of the column and extend to the outside of the mounting hole when the column is inserted into the mounting hole. An insertion-type clip having a plurality of blade portions, wherein the support column has a plurality of wall portions arranged radially from the shaft core portion to divide the shaft core portion around at least three parts, The blade portion is joined to the adjacent wall portions so as to connect adjacent ones of the plurality of wall portions, and has a length that extends radially outward from the joint portions. an elastic deformable portion extending outwardly of the hole, the blade section half of Outward portion is assumed to be formed inclined in a direction to retract against the direction of insertion into the mounting hole. At least one of the radially outermost end position of the two junctions before Symbol elastic deformation portion was assumed to be set in a radial direction midpoint of the wall portion. Moreover, it is good to form so that at least one of the both edges from the both joints of the elastic deformation part to the outermost end in the extending direction may be bent toward the axial center side of the support column.
[0008]
By doing so, the plurality of wall portions extending in at least three directions from the support column can stabilize the positioning of the support column with respect to the mounting hole during insertion, and at least one edge of the elastically deforming portion of the blade portion is bent inward. Since the blade portion is formed in the shape to be formed, the insertion resistance can be reduced because the elastic deformation portion is more easily deformed than the shape that is not bent inward. In addition, by setting at least one of the radially outermost positions of the joints with both adjacent wall portions of the blade portion in the vicinity of the midpoint in the radial direction of the wall portion, the base end portion (relatively rigid Therefore, the elastic deformation portion at the time of insertion is easily deformed, and the insertion resistance can be reduced in the same manner as described above.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail based on specific examples shown in the accompanying drawings.
[0010]
1 is a partially cutaway front view of an insertion type clip to which the present invention is applied, FIG. 2 is a side view thereof, FIG. 3 is a plan view thereof, and FIG. 4 is a bottom view thereof. As shown in each of these drawings, the clip includes a circular dish-shaped head 1, a cruciform cross-sectional column 2 projecting coaxially from the head 1 downward in FIG. 1, and the axis of the column 2. A plurality of blade portions 3 that extend outward from the core portion in the radial direction (radial direction centered on the axial center of the support column 2; hereinafter the same) and are disposed at predetermined intervals in the axial direction. ing.
[0011]
As shown in FIG. 1, this clip is suitable for attaching an interior material 4 or the like in an automobile to the body panel 5, and aligns the through hole 4 a of the interior material 4 with the mounting hole 5 a of the body panel 5, thereby After inserting 2 into both holes 4a and 5a, the head 1 is pushed with a finger or the like, and the interior material 4 is attached to the body panel with a clip. At this time, a part of the blade portion 3 provided in multiple stages in the axial direction faces the back surface side of the body panel 5, so that the portion located on the back surface side of the body panel 5 of the blade portion 3 and the head 1 The interior material 4 and the body panel 5 can be held between the interior material 4 and the interior material 4 is fixed in this manner.
[0012]
The pillars 2 in this clip have a cruciform cross-sectional shape as well shown in FIG. 5, and the cruciforms extend radially from the axial core portion of the pillars 2 and are disposed at a pitch of 90 degrees in the circumferential direction. Four wall portions 2a and 2b are formed. The four wall portions 2a and 2b are formed in a shape in which the mirror images of each other form a pair, and the cross-sectional shape of the wall portion 2a forming one pair is a relatively thick flat plate shape. In addition, the cross-sectional shape of the wall portion 2b forming the other pair is formed in a trapezoidal shape whose thickness is reduced in the extending direction.
[0013]
Then, as shown in FIGS. 4 and 5, the wall portions 2 a and 2 b are joined to each other by integral molding and extend outward in the radial direction so as to communicate between the adjacent wall portions 2 a and 2 b. Four blade portions 3 formed as described above are arranged in the circumferential direction. In addition, each blade | wing part 3 is formed so that it may mutually make a symmetrical shape on both sides of each wall part 2a * 2b which divides | segments each.
[0014]
In the shape of the blade part 3 in the illustrated example, the edge 3a along one wall part 2a extends in parallel with one wall part 2 from the vicinity of the extension end of the other wall part 2b, and the other The edge 3b along the wall portion 2b is bent inward on the axis side of the support column 2 in the vicinity of the intermediate point. In addition, a portion from the bending point of the edge 3b to the one wall portion 2a is an intermediate point of the wall portion 2a in an approximately parallel state with respect to the other wall portion 2b (an intermediate point between the axis of the column 2 and the extending end). ) The vicinity has been reached. Therefore, the radially outermost end position of the joint portion of the blade portion 3 with the wall portions 2a and 2b is, for one wall portion 2a, from the axial center portion of the support column 2 to the vicinity of the intermediate point in the radial direction. The other wall portion 2b reaches from the axial core portion of the support column 2 to the vicinity of the extending end.
[0015]
As shown in FIG. 5, the extending length of the blade portion 3 in the radial direction is set to reach the outside of the mounting hole 5 a in a state where the support column 2 is inserted into the mounting hole 5 a. In addition, in order to ensure a sense of stability at the time of insertion into the mounting hole 5a, each diametrical length of each pair of wall portions 2a and 2b is substantially equal to the diameter of the mounting hole 5a. The radially outermost end position of the joint portion of each blade portion 3 with the wall portions 2a and 2b is located somewhat inside the edge of the mounting hole 5a. In the blade portion 3 formed in this way, the radially outer portion is relatively elastically deformed relative to the rigid boundary line L connecting the radially outermost ends of the joint portions with the adjacent wall portions 2a and 2b. The elastically deformable portion 3c is easily deformed, and the elastically deformable portion 3c can be deformed when inserted into the mounting hole 5a, so that a clip can be inserted into the mounting hole 5a.
[0016]
As described above, four blade portions 3 are provided in the circumferential direction around the axis of the support column 2, and a plurality of stages are provided at predetermined intervals in the protruding direction of the support column 2. This is because a general-purpose product can cope with the difference in thickness of the attachment member (body panel in the illustrated example).
[0017]
As described above, since one edge 3b of the blade portion 3 is bent inward on the axial center side of the support column 2 in the vicinity of the intermediate point, the outer portion extending in the direction from the bending point is It is much more flexible. Therefore, the elastic deformation portion 3c of the blade portion 3 is more easily deformed than the case where it is formed in a substantially straight line without bending inward, and the insertion work of the clip is easy because the insertion resistance is small. At the same time, it is easy to confirm the seating feeling when the elastically deforming portion 3c facing the back side of the body panel 5 hits the back side of the body panel 5, it can be prevented from being pushed too much, and the clip mounting workability is good. .
[0018]
In addition, since the radially outermost end position of the joint portion with the one wall portion 2a of the blade portion 3 is set at a certain distance from the extending end of the wall portion 2a, The rigid boundary line L and the edge of the attachment hole 5a are relatively separated from each other, and the elastically deformable portion 3c of the blade portion 3 that contacts the edge of the attachment hole 5a during insertion is easily deformed. Therefore, since the insertion resistance is small, the same effect as described above is obtained, and the clip mounting workability is good.
[0019]
In the illustrated example, only one edge 3b is bent, but both edges 3a and 3b may be bent inward. In the illustrated example, the joining length of the joining portion with one wall portion 2a is shortened, but may be performed with respect to the other wall portion 2b, or may be performed with respect to both wall portions 2a and 2b. . Furthermore, although both are combined in the illustrated example, a shape adopting only one of them may be used.
[0020]
Further, in the illustrated example, four blade portions 3 are provided in the circumferential direction, and the elastically deforming portions 3c are engaged with the attachment holes 5a at four locations by the pulling direction force, so that a high holding force is obtained. Can be obtained. In the illustrated example, four blade portions 3 are provided in the circumferential direction. However, if the number is three or more, the same effect as in the illustrated example can be obtained. Moreover, although the blade | wing part 3 was provided in multiple steps also about the protrusion direction of the support | pillar 2, when only the attachment member of single thickness is made into object, it may be only one step.
[0021]
In the illustrated example, the radially outer portion of the blade portion 3 is formed so as to be inclined with respect to the retreating direction with respect to the insertion direction. As a result, the insertion resistance is further reduced and insertion workability is improved. In addition, since resistance against removal is obtained, the holding force in the attached state is increased.
[0022]
【The invention's effect】
Thus, according to the present invention, the elastically deformed portion of the blade portion is easily bent and the insertion resistance is reduced, so that the insertion work is easy and the seating feeling on the mating member of the elastically deformed portion becomes clear. The mounting workability of the insertion type clip can be improved.
[Brief description of the drawings]
FIG. 1 is a partially cutaway front view of an insertion type clip to which the present invention is applied.
FIG. 2 is a side view of the clip of FIG.
FIG. 3 is a plan view of the clip of FIG. 1;
4 is a bottom view of the clip of FIG. 1. FIG.
FIG. 5 is an enlarged cross-sectional view taken along line VV in FIG.
FIG. 6 is a cross-sectional view taken along a plane orthogonal to the axial center of a support column of a conventional insertion type clip.
FIG. 7 is a cross-sectional view corresponding to FIG. 6 of another insertion type clip of the conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Head part 2 Support | pillar, 2a * 2b Wall part 3 Blade | wing part, 3a * 3b edge, 3c Elastic deformation part 4 Interior material, 4a Through-hole 5 Body panel, 5a Mounting hole 11 Support | pillar, 11a wall part 12 Blade | blade part 13 Support | pillar 14 Feather

Claims (3)

A head, a support column that protrudes from the head and can be inserted into the mounting hole, and radially outward from the axial center portion of the support column and outward of the mounting hole when the support column is inserted into the mounting hole. An insertion-type clip having a blade portion formed so as to extend to the end,
The support column has a plurality of wall portions arranged radially from the shaft core portion so as to divide the periphery of the shaft core portion into at least three parts.
The blade portion is joined to the adjacent wall portions so as to connect adjacent ones of the plurality of wall portions, and has a length that extends radially outward from the two joint portions. It has an elastic deformation part that reaches the outside of the mounting hole ,
An insertion-type clip, wherein a radially outer portion of the blade portion is formed to be inclined in a direction retreating with respect to the insertion direction into the mounting hole . Insertable clip according to claim 1, wherein at least one of the radially outermost end position of the two junctions before Symbol elastically deformable portion, characterized in that it is set in a radial direction midpoint of the wall portion .     The at least one of both edges from the both joints of the elastic deformation part to the outermost end in the extending direction is formed so as to bend toward the axial center side of the support column. 2. The insertion type clip according to 2.

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