KR20090130469A - Fastner for vehicle - Google Patents

Abstract

PURPOSE: A car fastener is provided to minimize loss of parts by integrating with a pin and grommet and to make assembly and disassembly facilitate. CONSTITUTION: A car fastener comprises a grommet body(220), a connector(211) and a pin body(120). An accommodating groove(223) accepting the pin body is formed on the grommet body. The connector is shaped across the upper end of the accommodating groove. The connector is integrated with the lower part of the pin body. The connector is thin T shape in order to prevent a pin head(110) from separating from a grommet(220). A guard(212) protecting the pin head is formed on an edge of the grommet head.

Description

Fasteners for Vehicles {Fastner for vehicle}

The present invention relates to a fastener for an automobile, and more particularly, to a fastener for an automobile to facilitate the assembly and disassembly by molding the pin and the grommet into a unitary structure of the interlocking structure.

Currently, the use of plastic fasteners for panel and component connections is expanding, especially for automotive interior and exterior parts (bumpers, wheel guards, tailgate trims, cowl top covers, etc.).

1 is an exploded perspective view illustrating a conventional automobile fastener, and FIG. 2 is a cross-sectional view illustrating a mounting state of a conventional fastener.

As shown in FIG. 1, most plastic fasteners consist of a pin 1 and a grommet 5, the pin 1 being inserted into the grommet 5 so that the diameter of the lower part 7 of the grommet 5 is increased. Assembled with expansion. Then, by using the spirals 4 and 6 formed on the pin 1 and the grommet 5, they are disassembled in the same manner as in the case of screw disassembly.

However, most of the fasteners currently applied to automobiles are products that consider only assemblability, and there is a problem in that they need to be pre-assembled (pre-assembled) by injection into two pieces of pins and grommets.

In addition, when the fastener is transported or dismantled and then reassembled, even if one piece of the two pieces is lost or damaged, the remaining one piece cannot be used, resulting in a loss.

In addition, in the case of a fastener composed of a screw type pin as shown in FIG. 1, a driver groove is frequently damaged at an upper end of a pin used for assembling / disassembly, thereby making it impossible to assemble / disassemble. At this time, since the fasteners must be forcibly dismantled, there is a high possibility that the fasteners are broken, and the fasteners are often damaged, and additional costs are generated.

In addition, the conventional fastener is difficult to remove the secondary disassembly to remove from the mounted panel to maintain the bottom of the grommet even after being separated.

The present invention has been invented to solve the above problems, to provide a fastener for automobiles to minimize the loss of parts and to facilitate the disassembly and assembly by molding the pin and grommet into a one-piece combined in a custom fit method. There is this.

In order to achieve the above object, the present invention provides a fastener for a vehicle comprising a pin consisting of a pin head and a pin body at a lower end, and a grommet composed of a grommet head and a grommet body at a lower end.

An accommodation groove for receiving a pin body is formed in the grommet body, a connecting rod is formed to be formed across the upper end of the receiving groove, and the lower end of the pin body is connected to the connecting rod and the automobile is characterized in that it is integrally formed. Provides fasteners for

And, the connecting rod is characterized in that it is molded into a thin tee type to be released from the grommet when pressing the pin head.

In addition, a guard for protecting the pin head is formed at the edge of the grommet head, the diameter of the grommet head is formed larger than the diameter of the pin head to insert a tool between the pin head and the grommet head ,

Preferably, the grommet body is cut in the longitudinal direction is formed with one or more incision, characterized in that the lower end is bent inward to form a locking portion.

More preferably, the pin body has a locking jaw formed concave along the outer periphery at a position corresponding to the locking portion, a lower locking jaw formed to be tapered at the lower end, and tapered between the locking jaw and the lower locking jaw. It is characterized in that it comprises a recessed groove, and at least one rib formed in the longitudinal direction corresponding to the incision.

Fasteners for automobiles according to the present invention is connected to the pin and the grommet connected to the connection is easy to assemble and has an effect of minimizing the risk of assembly time and parts due to loss / damage.

In addition, the tool insertion part is provided between the pin and the grommet during assembly to minimize the disassembly time by facilitating disassembly of fasteners. Minimize breakage and reduce manufacturing costs for fasteners.

In addition, it is excellent in appearance when assembling fasteners can be applied to not only the exterior but also internal components, there is an advantage that can reduce the manufacturing cost, assembly cost, disassembly cost.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the invention, and the singular forms “a”, “an” and “the” include plural forms unless the context clearly indicates otherwise.

There may be a plurality of embodiments of the present invention, and overlapping descriptions of the same parts as in the prior art may be omitted.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

Fasteners for automobiles preferably implemented according to the present invention are coupled in a snap-fit, and the pin 100 and the grommet 200 mounted on the interior and exterior materials of the vehicle are integrally injection-molded to assemble the pin and the grommet. Performance dismantling is improved.

3 is a perspective view showing an embodiment of a fastener for a vehicle according to the present invention, Figure 4 is a bottom perspective view showing an embodiment of a grommet according to the present invention.

One embodiment of the fastener according to the present invention is a pin 100 is formed by being connected to the pin head 110 and the pin body 120 at the upper end, the grommet head 210 and the grommet body 220 at the upper end Consists of a grommet 200 is formed by connecting to, the hollow receiving groove 223 is provided in the longitudinal direction of the grommet body 220 in the center of the grommet head 210 to accommodate the pin head 110 is It is provided.

As shown in FIG. 3, in the present invention, a connecting rod 211 that crosses its diameter is integrally formed at an upper end of the receiving groove 223, and the pin body 120 is formed at the center of the connecting rod 211. The ends are connected and molded integrally.

The connecting table 211 is provided in a band shape of 0.5 ~ 1.5㎜ thickness, the pin body 120 is connected so as to be located in the center of the receiving groove 223 pin 100 by lightly pressing the pin head 110 ) Is lowered and inserted into the receiving groove 223 is assembled to the grommet 200. At this time, the connecting table 211 is broken away from the grommet 200.

The fastener according to the present invention is injected integrally by using the connecting rod 211, thereby preventing the loss of individual parts, thereby facilitating storage and movement, and eliminating the need for preassembly.

On the other hand, the pin 100 and the grommet 200 constituting the fastener according to the present invention is molded by a mechanism in which each external shape is interlocked with each other is coupled in a tailoring manner.

As shown in FIGS. 3 and 4, the grommet 200 has a grommet body 220 for receiving the pin body 120 at a lower end of the circular grommet head 210. The grommet head 210 has a guard 212 formed to a certain height at the edge to protect the side of the pin head 110 to prevent the pin head 110 is inadvertently disassembled after fastener assembly, The grommet body 220 is cut in the longitudinal direction to form one or more incisions 221 and the lower end is formed to be bent inwardly is formed as a locking portion 222.

The pin 100 is molded in a circular shape in which the pin head 110 is plated at the upper end so that the pin 100 is in close contact with the flat upper end of the grommet head 210 without protruding as a whole when the fastener is assembled so as to be in close contact with the object (car interior and exterior materials). do.

In addition, the pin head 110 is molded smaller than the diameter of the grommet head 210, the tool insertion portion that can be inserted between the outer peripheral surface of the pin head 110 and the guard 212 of the grommet head when assembling the fastener Be prepared.

The pin body 120 formed at the lower end of the pin head 110 is formed including a rib 121, a recessed groove 123, a locking jaw 122, a lower locking jaw 124 and the like.

The rib 121 is formed in a band shape having a thickness that can be inserted into the cutout portion 221 of the grommet body 220 is formed in the longitudinal direction of the pin body 120, the cutout ( It is provided at a position corresponding to 221. The rib 121 is guided along the cutout 221 to be inserted in the correct position even if the pin body 120 is inserted into the receiving groove 223 in any direction, allowing only movement in the vertical direction Prevents left and right rotational flow and twisting.

The locking jaw 122 is formed to be concave on the outer circumferential surface of the pin body 120 so that the locking portion 222 of the grommet body can be caught, and is formed at a position where the locking portion 222 is disposed when assembling the fastener. The lower locking jaw 124 is formed to be tapered at the lower end of the pin body 120, the pin body 120 is formed to be tapered between the locking jaw 122 and the lower locking jaw 124 concave groove 123 ) Is formed.

In this case, the locking jaw 122, the lower locking jaw 124 and the concave groove 123 is divided by the rib 121, the locking jaw 122 is fixed so as not to move in the vertical direction when assembling the fastener. .

The fastener according to the present invention is preferably made of a member having elasticity and rigidity, and is usually provided as a plastic member.

Hereinafter, an operation state of an embodiment according to the present invention configured as described above is as follows.

5 is a flowchart illustrating an assembly process according to the mechanism of the automobile fastener according to the present invention, and FIG. 6 is a flowchart illustrating a disassembly process according to the mechanism of the automobile fastener according to the present invention.

After inserting the grommet body 220 in the portion to be fixed to the object, as shown in Figure 5, pressing the upper portion of the pin head 110, the connecting rod 211 is disconnected and detached pin body 120 ) Is inserted into the receiving groove 223 of the grommet 200, the lower end of the pin head 110 is in close contact with the upper end of the grommet head 210 is coupled without a portion protruding in appearance.

Looking at the fastener assembly process in which the pin 100 is coupled to the grommet 200 in detail, the lower engaging jaw 124 is inserted into contact with the engaging portion 222 of the grommet body 220 is removed and inserted While the grommet body 220 is opened, the rib 121 is inserted while being inserted into the incision 221. The locking portion 222 which is opened to the outside by the elastic force is extended to the upper end of the lower locking jaw 124 and then retracted from the concave groove 123, and is extended again along the upward inclination of the concave groove 123 and then the locking jaw 122 ) Is fixed as it is retracted.

In order to disassemble the fasteners thus coupled, as shown in FIG. 6, when the pin head 110 is simply lifted by inserting a tool such as a driver into the tool insertion portion, the locking portion separated from the locking jaw 122 is removed. The pin 100 and the grommet 200 are disassembled while the 222 is retracted along the inclination of the concave groove 123.

As the locking portion 222 retracted from the concave groove 123 is caught on the upper end of the lower locking jaw 124, the pin 100 can no longer be lifted, and at this time, the pin 100 is lifted by applying a certain force. When raised, the locking portion 222 caught on the lower locking jaw 124 comes up together and the pin 100 and the grommet 200 are separated from the object at the same time to complete the dismantling.

Accordingly, after dismantling the fasteners, the grommet 200 does not need to be disassembled separately from the object (no secondary dismantling work), and the assembly state of the pin 100 and the grommet 200 is maintained, so that pre-assembly is unnecessary even when reused. Done.

According to the present invention, the pin and the grommet are integrally formed so that the assembly is excellent, as well as the disassembly is easy, so that the fastener is dismantled without damage and can be reused. Material cost is reduced.

In addition, since the lower end of the grommet head is fixed to the surface of the object tightly when assembling the fastener, it can be used in common for interior and exterior parts of the car, thereby reducing manufacturing costs.

While the invention has been shown and described with respect to certain preferred embodiments, the invention is not limited to these embodiments, and those of ordinary skill in the art claim the invention as claimed in the appended claims. It includes all embodiments of the various forms that can be carried out without departing from the spirit.

1 is an exploded perspective view showing a conventional automobile fastener,

2 is a cross-sectional view showing a mounting state of a conventional fastener;

3 is a perspective view showing one embodiment of a fastener for a vehicle according to the present invention;

4 is a bottom perspective view showing one embodiment of a grommet according to the present invention;

5 is a flowchart illustrating an assembly process according to a mechanism of a fastener for automobiles according to the present invention;

6 is a flowchart illustrating a dismantling process according to the mechanism of the fastener for automobile according to the present invention.

<Description of the symbols for the main parts of the drawings>

100: pin 110: pin head

120: fin body 121: rib

122: locking jaw 123: concave groove

124: lower locking jaw

200: grommet 210: grommet head

211: connecting rod 212: guard

220: grommet body 221: incision

222: locking portion 223: receiving groove

Claims (5)

In a fastener for automobiles comprising a pin consisting of a pin head at the upper end and a pin body at the lower end, and a grommet composed of a grommet head at the upper end and a grommet body at the lower end, An accommodation groove for receiving a pin body is formed in the grommet body, a connecting rod is formed to be formed across the upper end of the receiving groove, and the lower end of the pin body is connected to the connecting rod and the automobile is characterized in that it is integrally formed. Dragon fasteners. The method according to claim 1, The connecting rod is a fastener for automobiles, characterized in that formed in a thin tee type so as to leave the grommet when pressing the pin head. The method according to claim 1, A guard protecting the pin head is formed at the edge of the grommet head, and the diameter of the grommet head is formed larger than the diameter of the pin head so that a tool can be inserted between the pin head and the grommet head. Fasteners. The method according to claim 1, The grommet body is cut in the longitudinal direction is formed one or more incisions, the lower end is bent inward car is characterized in that the engaging portion is formed. The method according to claim 4, The pin body includes a locking jaw that is concavely formed along the outer periphery at a position corresponding to the locking portion, a lower locking jaw that is tapered on the lower end, and a concave groove that is tapered between the locking jaw and the lower locking jaw; And at least one rib formed in the longitudinal direction corresponding to the cutout.

Images