JPH08270627A - Connecting fixture - Google Patents

Abstract

PURPOSE: To strengthen holding force further made agedly maintainable, by inserting and press fitting a pin to a through hole of a retaining part, and fixedly interposing a mounting member and mounted member by retaining part both ends and spread elastic part. CONSTITUTION: A point end guide part 8 of a pin 2 is press fitted to a through hole 12 of a clip 3, and a tapered part 7a of a contraction closed part 7 is brought into contact with the first tapered part 13, to connect the pin 2 and the clip 3. When the clip 3 is pressed to a mounting hole of mounting/mounted members 20, 21 by holding a head part flange 4 of the pin 2, a fold back part 16 of the clip 3 is elastically deformed, and a leg part 11 passes through the mounting hole, to stop an elastic part 17 to a mounting hole peripheral edge part. Further when the head part flange 4 is pressed, the tapered part 7a presses outward a bending part 14 of the clip 3, and when the pin 2 is press fitted till bringing the head part flange 4 into contact with a retaining part 10, the leg part 11 is further opened outward, to strongly press the mounting hole peripheral edge part in the direction of the retaining part 10 by the elastic part 17. In this way, prescribed holding force can be maintained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a useful fastener for simultaneously joining two decorative boards and panel boards.

[0002]

2. Description of the Related Art Examples of conventional fasteners include those disclosed in Japanese Utility Model Publication No. 55-179212, Japanese Utility Model Publication No. 61-182409, and Japanese Utility Model Publication No. 64-24172, respectively. All of these conventional examples basically consist of a metal pin (or screw bolt) with a male screw and a receiving part (grommet) made of synthetic resin. By screwing in or pressing in, the leg part of the receiving part is expanded to the outside,
The two decorative plates and the panel plate are held together by holding the peripheral edges of the mounting holes.

[0003]

However, in each of the conventional examples as described above, since the receiving portion is made of synthetic resin, the holding force for the peripheral edge of the mounting hole of the decorative plate or the panel plate is weak, and the synthetic Since it is made of resin, there is a problem that creep deformation occurs over time and the strength becomes weaker.

The present invention solves the above problems of the prior art, has a strong holding force, maintains the holding force over time, has an error absorbing capability, and has a followability to an external force. The purpose is to provide a tool.

[0005]

In order to achieve the above-mentioned object, in the present invention, a synthetic resin pin and a metal clip for receiving the pin and fixing the mounting member and the mounted member are used. In the fastener, the pin comprises a head flange, a shaft portion extending from a lower surface of the head flange, and a tip guide portion formed at a tip of the shaft portion, and the shaft portion is a shaft. A step portion is formed on each side surface in one direction at an intermediate position in the direction, and is tapered and contracted downward from the step portion, and the tip guide portion is integrally formed at the tip of the contracted portion. The clip is composed of a holding portion and a pair of legs, and both ends of a plate-shaped metal are folded back to form a holding portion of the mounting member, and the tip guide portion and the tip guide portion are formed in the center portion of the holding portion. A through hole having a size into which the shaft portion can be inserted is formed, and the leg portion is A first tapered portion, and the bent portion, the second
A pair of folded-back portions at both ends of the pressing portion are tapered in a direction corresponding to the contracted-closed portion of the shaft portion in a direction in which they are mutually contracted downward. The first taper portion is extended to form the first taper portion, and the bent portions are provided at the respective tip positions of the first taper portions, and the first taper portion is extended in the downward direction so that the second taper portion is formed. Is formed, the tips of the pair of second tapered portions are folded back toward each other toward the pressing portion, and the folded portions are formed by extending a predetermined dimension, and the tips of the pair of folded portions are Bending inwardly so as to be able to abut the peripheral edges of the mounting holes formed in the mounting member and the mounted member,
The elastic part is extended to form the elastic member, and the pin is inserted into the through hole of the pressing part and press-fitted to the both ends of the pressing part and the expanded elastic part to attach the attachment. The fastener is characterized in that the member and the attached member can be sandwiched and fixed.

[0006]

According to the present invention having the above-described structure, in the metal clip, the entire leg portion is expanded outward by inserting and press-fitting the pin, so that the mounting holes of the mounting member and the mounted member are Although it engages with the peripheral edge, since the folded-back portion is formed at the tip of the leg portion, the elasticity of the folded-back portion can follow the variation error in the size of the mounting hole and reliably absorb the variation error. Further, since the elastic part is formed at the tip of the folded-back part, the elastic part can apply a reaction force in the direction of the pressing part in a state of being engaged with the peripheral edge of the mounting hole, so that the elastic part A clamping force is generated between the mounting member and the mounted member in order to suppress the rattling of the mounting member and the mounted member, and it is possible to reliably absorb the variation error in the plate thickness of the mounting member and the mounted member. .

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. 1 to 7 show an embodiment of the present invention, in which 1 is a fastener according to the present embodiment.

As shown in FIG. 1, the fastener 1 is composed of a pin 2 made of synthetic resin and a clip 3 made of metal for receiving the pin 2 and fixing a mounting member and a mounted member. .

As shown in FIG. 2, the pin 2 has a disk-shaped head flange 4, a shaft portion 5 extending from the lower surface of the head flange 4, and a tip formed at the tip of the shaft portion 5. Guide 8
It consists of and. The shaft portion 5 has stepped portions 6 formed on both side surfaces in one direction of the shaft portion 5 which is in the shape of a quadrangular prism at an intermediate position in the axial direction, and is tapered downward from the stepped portion 6 to form a taper. A tapered portion is formed through the portion 7a, and a contracted portion 7 is formed below the tapered portion 7a with the same size and a predetermined length, and a tip guide portion 8 is integrally formed at the tip of the contracted portion 7. . In this embodiment, the tip guide portion 8 is formed in a truncated pyramid shape.

The shaft portion 5 can be formed in, for example, a cylindrical shape in addition to the quadrangular prism shape as in the present embodiment, and the tip guide portion 8 is also in the quadrangular truncated pyramid shape, for example, a truncated cone shape. It can also be formed in a shape.

As shown in FIG. 3, the clip 3 comprises a holding portion 10 and a pair of symmetrical leg portions 11, 11. The clip 3 is formed of a spring steel plate in this embodiment. The holding portion 10 is formed by folding back both ends of a plate-shaped metal of a predetermined size, and has a shape that allows the mounting member to be pressed from above by the flange portions 10a at both ends of the folding back. The pin 2 is provided at the center of the holding section 10.
A through hole 12 having a size into which the tip guide portion 8 and the shaft portion 5 can be fitted is formed.

The leg portion 11 includes a first tapered portion 13, a bent portion 14, a second tapered portion 15, a folded portion 16, and
It is composed of an elastic unit 17.

That is, the pair of folded flange portions 10a at both ends of the holding portion 10 have a shape corresponding to the contracted portion 7 of the shaft portion 5 of the pin 2 and extend in a taper shape in a direction in which they are mutually contracted downward. 1st taper part 13 is formed and the bending part 14 is provided in the front-end | tip position of the mutual 1st taper part 13. Therefore, when the pin 2 is fitted, the portion from the first taper portion 13 to the bent portion 14 is pushed and expanded by the tip guide portion 8, and the entire leg portion 11 is expanded outward.

A second taper portion 15 is formed below the bent portion 14 so as to extend in a taper shape in a direction in which the portions are downwardly expanded. The tip ends of the pair of second taper portions 15 are folded back toward each other toward the pressing portion 10 and extended by a predetermined dimension to form a pair of folded portions 16. The tip ends of the pair of folded-back portions 16 are bent and extended inwardly so as to come into contact with the peripheral edges of the mounting holes formed in the mounting member and the mounted member, thereby forming a resilient portion 17. Therefore, the tip of the elastic member 17 is a free end.

Next, a mounting mode of the fastener 1 having the above-mentioned structure will be described. For installation, first refer to FIG. 1 and FIG.
As shown in, the tip guide portion 8 of the pin 2 is inserted into the through hole 12 of the clip 3, and the first taper portion 13 to the bent portion 14 are inserted.
Then, the pin 2 and the clip 3 are coupled with each other in a state where the tapered portion 7a of the contracted and closed portion 7 is in contact with the corresponding first tapered portion 13 as shown in the drawing.

As shown in FIG. 4, the fastener 1 in this state is temporarily fixed to the mounting holes 22 and 23 formed in the mounting member 20 and the mounted member 21, respectively. That is, pin 2
With the head flange 4 of the pin 2 held and the clip 3 abutted and pressed against the corresponding mounting holes 22 and 23, the pair of folded-back portions 16 of the clip 3 are predetermined inward. Elastically deformed by the size, the pair of leg portions 11 pass through the mounting holes 22 and 23, and the pair of resilient portions 17 are elastically contacted with the peripheral edge of the mounting hole 23 as shown in FIG. To be done.

When the head flange 4 is further pressed from this state, the tapered portion 7a of the pin 2 presses the bent portion 14 of the clip 3 outward, and the head flange 4 presses the holding portion 10.
When the pin 2 is press-fitted to the position where it abuts against the pair of legs 11, the pair of leg portions 11 are further expanded outward from the state of FIG. 4 as shown in FIG. The pressing member 10 is strongly pressed in the direction of the holding portion 10 so that the flange portion 10a at both ends of the holding portion 10 and the expanded resilient portion 10 allow the mounting member 20 to be attached.
And the attached member 21 are sandwiched and fixed.

If it is necessary to remove the fastener after mounting, the head flange 4 in the state shown in FIG. 6 can be moved upward with a tool as shown in FIG. It can be removed by pulling out the pin 2.

According to the present embodiment having the above-described structure, the metal clip 2 has the leg portion 11 as a whole expanded outward by inserting and press-fitting the pin 3 to attach the attachment member 20 and the attached member. Although it engages with the peripheral edges of the mounting holes 22 and 23 of the member 21, since the folded-back portion 16 is formed in the leg portion 11, the folded-back portion 16 has the size of the mounting holes 22 and 23 as shown in FIG. The variation error can be elastically deformed to reliably absorb the error.

Further, a resilient part 17 is provided at the tip of the folding part 16.
Since the resilient part 17 is formed, the resilient part 17 can apply a reaction force in the direction of the holding part 10 in a state of being engaged with the peripheral edge of the mounting hole 23 as shown in FIG. A clamping force is generated between the mounting member 20 and the mounted member 21 between
It is possible to suppress rattling of the mounting member 20 and the mounted member 21 and to elastically deform in accordance with an error in variation in the plate thickness of the mounting member 20 and the mounted member 21 to reliably absorb the error.

Further, since the clip 2 is made of metal,
Unlike the conventional receiver made of synthetic resin described above, it does not cause creep deformation and can maintain a predetermined holding force over time.

The present invention is not limited to the above-mentioned embodiment, and the shape, forming dimensions, etc. of each constituent portion can be appropriately changed as necessary, etc. within the scope of the present invention. Various modifications are possible within.

[0023]

The present invention is configured as described above, and has the following effects. (1) Since the leg part of the clip has a folded part, it can be elastically deformed to follow the variation error of the size of the mounting hole of the mounting member and the mounted member, and can reliably absorb the error. it can. (2) Since the elastic part is formed at the tip of the folded part,
The resilient part can apply a reaction force in the direction of the holding part in a state of being engaged with the peripheral edge of the mounting hole, and generate a holding force between the mounting member and the mounted member between the holding part, It is possible to suppress rattling of the mounting member and the mounted member, and to elastically deform by following a variation error in the plate thickness of the mounting member and the mounted member, and to reliably absorb the variation error. (3) Since the clip is made of metal, it is possible to maintain a predetermined holding force without causing creep deformation unlike the conventional receiver.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a fastener according to the present invention.

FIG. 2 is an explanatory view showing an embodiment of the pin according to the present invention.

FIG. 3 is an explanatory view showing an embodiment of a clip according to the present invention.

FIG. 4 is a cross-sectional view of an essential part showing the procedure for attaching the fastener according to the present invention.

FIG. 5 is an explanatory view showing the operation of the folded portion according to the present invention.

FIG. 6 is a cross-sectional view of essential parts showing a state after attachment of the fastener according to the present invention.

FIG. 7 is an explanatory view showing the operation of the elastic unit according to the present invention.

[Explanation of symbols]

 1 Fasteners 2 Pins 3 Clips 4 Head Flange 5 Shafts 6 Steps 7 Shrinkage Parts 7a Tapered Parts 8 Tip Guide Parts 10 Holding Parts 10a Flange Parts 11 Legs 12 Through Holes 13 First Tapered Parts 14 Bent Parts 15 Second taper portion 16 Folded portion 17 Repulsive portion 20 Mounting member 21 Attached member 22 Mounting hole 23 Mounting hole

Claims (1)

[Claims] 1. A synthetic resin pin and a pin for receiving the pin,
A fastener comprising a metal clip for fixing a mounting member and a mounted member, wherein the pin is a head flange, a shaft portion extending from a lower surface of the head flange, and the shaft portion. The tip portion is formed at the tip, and the shaft portion has step portions formed on both side surfaces in one direction at an intermediate position in the axial direction, and the step portion is tapered and contracted downward from the step portion, The tip guide portion is integrally formed at the tip of the contracted and closed portion, and the clip includes a holding portion and a pair of legs, and both ends of a flat plate-shaped metal are folded back to hold down the holding portion of the mounting member. Is formed, a through hole having a size into which the tip guide portion and the shaft portion can be inserted is formed in the central portion of the pressing portion, and the leg portion includes a first taper portion, a bent portion, and a first tapered portion. 2 a taper portion, a folded portion, and a resilient portion, and a pair of folded portions at both ends of the pressing portion The tapered portion has a shape corresponding to the contracted portion of the shaft portion and extends in a taper shape in a direction in which the shaft portion is contracted and contracted downward to form a first tapered portion. A bent portion is provided, and a second taper portion is formed by extending in a taper shape in a direction of expanding downwards to each other, and tips of the pair of second taper portions are mutually directed toward the pressing portion. The folded-back portions are formed by being folded back toward each other and extended by a predetermined dimension so that the tips of the pair of folded-back portions can contact the peripheral edges of the mounting holes formed in the mounting member and the mounted member. The elastic portions are formed by bending and extending inwardly with each other, and by inserting and pressing the pin into the through hole of the pressing portion, both ends of the pressing portion and the expanded portion With the firing part,
A fastener characterized in that the mounting member and the mounted member are sandwiched and fixed.