JP2600135Y2 - Fastener - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fastener used when a mounting part such as a kick plate is mounted on a mating part such as a vehicle body panel.

[0002]

2. Description of the Related Art Fasteners used for attaching a kicking plate, a trim board or a front grill to a vehicle body panel in an automobile or attaching a cowl to a body in a motorcycle include, for example, Japanese Utility Model Publication No. There is one known from Japanese Patent No. 411761. That is, it is an integrally molded product made of a synthetic resin having a head to be engaged with the mounting component side and a leg portion to be inserted into the mounting hole of the mating component, and furthermore, at substantially the center of the leg portion, increases the rigidity of the entire leg portion. A column for preventing buckling at the time of insertion is formed, and an engaging portion serving as a portion for engaging with the edge of the mounting hole is formed on the column in a connected state.

[0003]

However, according to such a conventional technique, since a pillar for increasing the rigidity of the leg is formed on the leg of the fastener, the leg is not used. Although buckling when inserting into the mounting hole of the counterpart component can be reliably prevented, both the insertion force when inserting the leg into the mounting hole of the counterpart component and the removal force when removing the leg from the mounting hole are both It becomes large and the mounting work becomes very difficult. In other words, since the insertion force is large, a large force is required at the time of installation, and the removal force is large. It is. In particular, in the case of withdrawal force, once withdrawn, it can be removed with a small force, but when attempting to remove for the first time, a very large initial withdrawal force is required, and remounting work is very troublesome .

The present invention has been made by focusing on such a conventional technique, and while maintaining rigidity enough to prevent buckling, both insertion force and removal force are reduced to improve mounting workability. It provides a fastener that can be used.

[0005]

In order to achieve the above object, a fastener according to the present invention has a flanged head which can be engaged in a mounting hole or a cutout of a mounting part, and a mounting part of a counterpart part. Leg that can be inserted into the hole, wherein the leg is
A cross-shaped support having four radiating pieces positioned substantially at the center of the leg, and an engaging portion connected to a pair of opposing radial pieces of the supporting portion; A thin portion along the direction of insertion of the leg is continuously formed from the vicinity of the head to the tip of the leg on a pair of radial pieces of a portion connected to the leg.

[0006]

The rigidity for preventing the buckling of the leg is ensured by the presence of the pillar having a cross-shaped cross section, and the pair of radial pieces of the portion connected to the engaging portion have the leg. Since the thin portion is formed along the insertion direction, the support portion bends inward together with the engaging portion at the time of insertion and withdrawal, so that both the insertion force and the withdrawal force are reduced, and the workability is improved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 5 show a first embodiment of the present invention. The fastener 1 according to this embodiment is an integrally molded product made of a synthetic resin composed of a head 2 and a leg 3,
A skirt 4 is formed between the head 2 and the leg 3. The head 2 itself has a cylindrical shape, and a flange 5 having a U-shaped planar shape is formed at the top thereof. A hole 6 for reducing the weight is formed in the flange 5 (see FIG. 3). A pair of protrusions 7 are formed on the upper surface of the skirt 4.

At the center of the leg 3, a column 8 having a cross-shaped cross section is formed. The thickness of each of the pillars 8 gradually decreases slightly in the radial direction. Further, among the four radial pieces 8a, 8b, 8c, 8d of the column 8, an engaging portion 10 is connected to a position near the tip 9 of a pair of opposed radial pieces 8a, 8c. The portion of the engaging portion 10 connected to the skirt portion 4 is a constricted portion 10a.

The engaging portion 10 is connected to the skirt portion 4 on the head 2 side, and a cutout 11 is formed in a portion other than the connecting portion to the support portion 8. Therefore, when the section of the notch 11 is sectioned, as shown in FIG.
The engagement portions 10 divided into four are located between the radial pieces 8a, 8b, 8c, 8d.

Then, the four radial pieces 8a of the support portion 8
Of the 8b, 8c, 8d, a thin portion 12 along the insertion direction A of the leg 3 is provided at the base of the radial pieces 8a, 8c to which the engagement portion 10 is connected. It is formed continuously up to the tip 9 of the third.

Next, using the fastener 1, the kicking plate 13, which is an "attachment part", is attached to the "counterpart".
The procedure for attaching to the vehicle body panel 14 will be described. First, the head 2 of the fastener 1 is inserted into the notch 16 of the mounting piece 15 formed on the lower surface of the kicking plate 13, and the mounting piece 15 is sandwiched between the flange 5 and the skirt-shaped part 4. One of the projections 7 formed on the upper surface of the shape portion 4 is engaged with a recess 17 formed on the lower surface of the mounting piece 15.

As a result, the fastener 1 is mounted on the kicking plate 13, and the leg 3 of the fastener 1 is inserted into the mounting hole 18 of the vehicle body panel 14. At this time, the engaging portion 10 is pushed by the edge of the mounting hole 18 and bends inwardly. The radial pieces 8a and 8c of the column 8 connected to the engaging portion 10 are also The leg 3 can be bent inward so as to be inserted into the mounting hole 18 with a small insertion force. Also, as described above, the thin portion 12
Is provided, the allowance for the deflection of the engaging portion 10 is increased, so that the allowable amount for the displacement of the mounting hole 18 is also increased,
The mounting workability is further improved. Note that the thin portion 12 is formed along the insertion direction A and does not bend in the direction in which the column portion 8 buckles. The stiffness for preventing the occurrence is maintained.
The leg 3 inserted into the mounting hole 18 is fitted into the mounting hole 18 at the constricted portion 10a, and is prevented from being detached.

Next, when the leg 3 of the fastener 1 is once pulled out from the mounting hole 18 due to the work, the entire fastener 1 is pulled out in the removal direction B as it is to be pulled out. At this time,
As in the case of insertion, the engaging portion 10 bends inward, and the radial pieces 8a and 8c connected to the engaging portion 10 also bend so as to inward center around the thin portion 12, so that a small withdrawal force Thus, the leg 3 can be extracted. As described above, in the case of this embodiment, both the insertion force and the removal force can be reduced while maintaining the rigidity for preventing buckling, which is very advantageous in terms of workability.

FIGS. 6 to 10 show a second embodiment of the present invention. The basic structure of the fastener 19 of this embodiment is the same as that of the first embodiment. The difference is that the flange 20 of the head 23 is circular, and the radial pieces 21 b, 21 b, 21 c, 21 d of the support 21 in the legs 24, which are not connected to the engaging part 22,
The point where the thickness of the radial pieces 21d in the radial direction is uniform, the point where the thickness of the radial pieces 21b and 21d gradually decreases in the insertion direction A, and the connecting position of the engaging portion 22 to the radial pieces 21a and 21c are the first. The point is that it is slightly closer to the head 2 than in the embodiment, and there is no protrusion 7 on the upper surface of the skirt-shaped portion 4.
In particular, the characteristic feature of the second embodiment is that the thickness of the support portion 21 gradually decreases in the insertion direction A, and has a tapered shape slightly tapered toward the distal end 9. As a result, the mold release resistance of the mold can be reduced, so that the mold can be reliably released with a single protrusion during injection molding, which is extremely advantageous in terms of manufacturability. Other configurations, functions, and effects are the same as those of the previous embodiment, and redundant description is omitted.

In the above description, the kicking plate 1
3, a notch 16 is provided in the mounting piece 15, and the fastener 1,
Although the example in which the heads 2 and 23 of the 19 are engaged has been described, an “attachment hole” may be formed in the attachment piece 15 and the heads 2 and 23 may be engaged therewith.

[0017]

The fastener according to the present invention has the contents as described above, and the rigidity for preventing the buckling of the leg is ensured by the presence of the column, while the fastener is provided. Since the thin portion along the insertion direction of the leg is formed in the support portion of the portion connected to the joint portion, the support portion bends inward together with the engagement portion at the time of insertion and removal, and Both the force and the withdrawal force are reduced, and workability is improved.

[Brief description of the drawings]

FIG. 1 is a side view showing a fastener according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line SA-SA shown in FIG.

FIG. 3 is a plan view of the fastener shown in FIG. 1;

FIG. 4 is a bottom view of the fastener shown in FIG. 1;

FIG. 5 is a sectional view taken along line SB-SB shown in FIG.

FIG. 6 is a side view showing a fastener according to a second embodiment of the present invention.

FIG. 7 is a sectional view taken along the line SC-SC shown in FIG.

8 is a plan view of the fastener shown in FIG.

FIG. 9 is a bottom view of the fastener shown in FIG. 6;

FIG. 10 is a sectional view taken along line SD-SD shown in FIG.

[Explanation of symbols]

 1, 19 Fasteners 2, 23 Head 3, 24 Legs 5, 20 Flange 8, 21 Prop 10, 22 Engagement part 12 Thin part 13 Kicking plate (attachment part) 14 Body panel (counterpart part) 16 Notch 18 Mounting hole

────────────────────────────────────────────────── ─── Continuation of the front page (56) References Japanese Utility Model 4-3108 (JP, U) Japanese Utility Model 47-6 (JP, U) Japanese Utility Model Utility Model 4-9356 (JP, U) US Patent 3,678,797 (US) , A) (58) Fields investigated (Int. Cl. ⁶ , DB name) F16B 19/00

Claims (3)

(57) [Scope of request for utility model registration] 1. A head having a flange that can be engaged into a mounting hole or a cutout of a mounting component, and a leg that can be inserted into a mounting hole of a mating component, wherein the leg is substantially the same as the leg. Four radial strips located in the center
And a cross-sectional cross struts with one of opposing said supporting column portion
Is composed of a engaging portion connected to the radial strips of pairs, the engagement to a pair of radial pieces of the portion connected to the engaging portion, a thin portion along the insertion direction of the legs from the vicinity of the head legs of the At the tip
A fastener characterized by being formed continuously to the end. 2. The fastener according to claim 1, wherein the thickness of the support portion is gradually reduced in the insertion direction. 3. The fastener according to claim 1, wherein a skirt is formed between the head and the leg.