KR100759040B1 - Mounting structure of lower cover and bolt holder - Google Patents

Abstract

A lower cover for an air bag of the driver seat of a steering wheel and a bolt holder mounting structure for fixing an air bag module of the driver seat are provided to reduce the number of parts and to simplify the assembly process by inserting a bolt holder into a lower cover. A bolt holder, fixing an air bag module of the driver seat, is mounted on a lower cover(140), a bolt holder(220) comprises a holding unit(210), a projection unit(222), and an insertion hole(143). The holding unit is composed of the insertion hole inserted by a bolt at the bolt holder for fixing the air bag module of the driver seat. The projection unit is formed on the holding unit. The insertion hole is inserted by the projection unit at the lower cover.

Description

Mounting structure of lower cover and bolt holder for steering airbag module lower cover and driver airbag module

1 is a perspective view of a lower cover according to a preferred embodiment of the present invention.

Figure 2 is a rear perspective view of the bolt holder for fixing the steering wheel driver seat airbag module according to an embodiment of the present invention.

Figure 3 is a front perspective view of the bolt holder for fixing the steering wheel driver seat airbag module according to an embodiment of the present invention.

Figure 4 is a perspective view of the steering wheel driver seat airbag module fixing bolt holder installation state according to a preferred embodiment of the present invention.

** Description of symbols for the main parts of the drawing **

16: bolt

140: lower cover 141: tool guide

142: mounting portion 143: insertion hole

200: bolt holder 210: holder

211: incision groove 220: protrusion

221: hook portion 222: locking projection

223 reinforcement

Korean Patent Publication No. 2005-66159

The present invention relates to a steering wheel driver seat airbag lower cover and a driver seat airbag module fixing bolt holder mounting structure, in particular, the driver seat airbag module fixing bolt holder is a holding portion formed with a fitting hole for the bolt is fitted, and the holding portion The protrusion is formed, and the lower cover is formed with an insertion hole into which the protrusion is inserted. The assembly process is simplified because the assembly is completed by simply inserting a bolt holder for fixing the driver's seat airbag module into the lower cover. The present invention relates to a lower cover for the steering wheel driver's airbag and a bolt holder for fixing the driver's airbag module, which eliminates the need for a separate bolt for fixing the bolt holder to the lower cover.

The conventional steering steering wheel lower cover for the driver's seat airbag and the bolt holder mounting structure for the driver's seat airbag module are assembled with an upper cover covering the front (upper) and a lower cover covering the rear (lower) while allowing the handle to penetrate the handle rod. . Inside the airbag module is mounted so that the airbag pops out of the handle in the event of a crash.

In order to assemble the driver's seat airbag module, the bolt work should be done.However, as the worker puts the bolt on the tip of the tool, the assembly is inefficient, so the operator has to fasten the bolt holder with the bolt in the lower cover. A method of tightening the pretightened bolts by inserting a tool is used.

That is, in the assembling process of the driver's seat airbag module, there is a task to tighten the bolt through the lower cover as described above. The conventional hole type lower cover inserts a tool through the hole to tighten the bolt.

However, the conventional bolt holder is fastened using a separate bolt to the mounting structure inside the lower cover. Therefore, there is a problem that a separate assembly labor and assembly time is required.

In addition, in order to fasten the driver's seat airbag module fixing bolt holder with a bolt, a fastening part for fastening must be formed on the side of the bolt holder, and a bolt fastening part for inserting a bolt in the lower cover must be formed to occupy a lot of space. The lower cover cannot be kept compact.

 The present invention has been made in order to solve the above-described problem, the driver seat airbag module fixing bolt holder includes a holding portion formed with a fitting hole for the bolt is fitted, and a protrusion formed in the holding portion, the lower cover the projection portion As the insertion hole is inserted, the assembly process is simplified by simply inserting the driver's seat airbag module fixing bolt holder into the lower cover, which simplifies the assembly process and a separate bolt for fixing the driver's seat bag holder fixing bolt holder to the lower cover. The purpose of the present invention is to provide a lower cover for the steering wheel driver's airbag and a bolt holder for fixing the driver's airbag module, which reduces the number of parts, thereby eliminating the need for an engine.

Steering wheel driver's seat airbag lower cover and the driver's seat airbag module fixing bolt holder mounting structure of the present invention for achieving the above object comprises a lower cover and a bolt holder for fixing the driver's seat airbag module mounted to the lower cover. Understand,

The driver's seat airbag module fixing bolt holder includes a holding part in which a fitting hole into which a bolt is fitted, and a protrusion formed in the holding part, and an insertion hole into which the protrusion is inserted is formed in the lower cover.

According to this configuration, assembling is completed simply by inserting the driver's seat airbag module fixing bolt holder into the lower cover, the assembly process is simplified, and a separate bolt is required to fix the driver's seat bag holder fixing bolt holder to the lower cover. There is an advantage that the number of parts is reduced.

The protrusion includes a first protrusion and a second protrusion disposed to be spaced apart from the first protrusion, and is formed below the holding part, and the cross-sectional shape of the first protrusion and the second protrusion is polygonal, and the On the outer surface of the first protrusion and the second protrusion, hook portions having inclined surfaces are formed to protrude, respectively, so as to have a smaller cross-sectional area toward the bottom, and the hooking protrusions are formed on the outer surfaces of the first and second protrusions so as to be above the hook portion. Groups are formed, respectively, one or more incision grooves are formed in front of the holding portion to communicate with the fitting hole, and a protrusion is formed in the inner peripheral surface of the holding portion is formed in the groove formed in the bolt, the elastic deformation of the protrusion The protrusion may be easily inserted into the insertion hole, and after being fitted, the lower cover may be disposed between the hook and the locking protrusion. The driver is prevented from escaping in the vertical direction of the driver's seat airbag module fixing bolt holder, and the protrusion is formed in a polygonal shape so that it does not rotate with respect to the lower cover, thereby stably fixing the driver's seat airbag module fixing bolt holder. In addition, the bolt may be easily assembled to the holding part.

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

For reference, among the configurations of the present invention to be described below, the same configuration as the prior art will be referred to the above-described prior art, and a detailed description thereof will be omitted.

1 is a perspective view of a lower cover according to a preferred embodiment of the present invention, Figure 2 is a perspective view of the back of the bolt holder for fixing the steering wheel driver seat airbag module according to a preferred embodiment of the present invention, Figure 3 is a preferred embodiment of the present invention Steering wheel driver seat airbag module fixing bolt holder front perspective view, Figure 4 is a perspective view of the steering wheel driver seat airbag module fixing bolt holder installation state in accordance with a preferred embodiment of the present invention.

As shown in Figures 1 to 4, the steering wheel driver seat airbag lower cover and airbag module fixing bolt holder mounting structure of the present embodiment, the lower cover 140, and the airbag module mounted to the lower cover 140 It comprises a fixing bolt holder 200.

The lower cover 140 has a bottom surface having a through hole through which the steering shaft passes, and a side surface surrounding the bottom surface.

Ribs are formed on the side inner circumferential surface and the bottom surface in the vertical direction or the circumferential direction to increase durability of the lower cover 140. Ribs in the vertical direction are formed on the side surface is connected to the bottom surface.

Holes are formed in the bottom surface so as to be on both sides of the upper part of the through hole, and protrusions are formed in the bottom surface so as to be in the upper and lower portions of the hole.

On both sides of the lower cover 140, a tool can be guided and a tool guide part 141 having a through hole formed therein is formed.

That is, the tool guide 141 is formed by protruding a part of the side of the lower cover 140 inward.

The tool guide part 141 includes a curved surface having a curved shape and a wall surface connecting both sides of the curved surface and the bottom surface of the lower cover 140.

Ribs in the vertical direction formed on the side of the lower cover 140 is extended to the curved surface of the tool guide portion 141. Therefore, the durability of the tool guide 141 can be increased.

An insertion hole 143 into which the protrusion 220 is inserted is formed at the bottom surface of the lower cover 140 to approach the through hole of the tool guide 141.

The insertion hole 143 is formed through the bottom surface, and is formed in the installation portion 142 formed by protruding the bottom surface to be disposed directly below the through hole of the tool guide 141.

The installation unit 142 includes an upper surface on which the insertion hole 143 is formed, and an installation wall surface disposed around the upper surface to connect the upper surface to the bottom surface of the lower cover 140.

Both sides of the installation wall surface is connected to the wall surface of the tool guide 141.

A connection surface connecting each other is formed between the upper surface of the installation portion 142 and the tool guide portion 141.

The insertion hole 143 is formed in a quadrangular (polygonal) shape, and the cross-sectional shape of the installation portion 142 is also formed in a quadrangular (polygonal) shape so as to correspond to the insertion hole 143.

The installation unit 142 serves to stably support the airbag module fixing bolt holder 200.

The airbag module fixing bolt holder 200 includes a holding part 210 having a fitting hole into which the bolt 16 is fitted, and a protrusion part 220 formed at the holding part 210, to the lower cover 140. Is mounted.

The holding portion 210 is formed in a cylindrical shape, and one or more cutting grooves 211 are formed at the front end (the portion into which the head of the bolt 16 is fitted) so as to communicate with the fitting hole.

Two cutting grooves 211 are formed at the upper side and two at the lower both sides so as to be located above the protrusion 220.

In addition, a protrusion is inserted into a groove formed along the outer circumferential surface of the head of the bolt 16 on the inner circumferential surface of the holding portion 210 so as to be located between the two cutting grooves 211.

In this way, when both sides of the protrusion are cut and the bolt 16 is inserted into the holding unit 210, the front end of the holding unit 210 opens and the protrusion is easily inserted into the groove. As a result, the bolt 16 fitted to the holding part 210 is temporarily assembled to be rotatable to the bolt holder 200.

The protrusion 220 includes a first protrusion and a second protrusion disposed to be spaced apart from the first protrusion, and is formed below the holding unit 210.

The cross-sectional shape of the first protrusion and the second protrusion is formed in a quadrangular quadrangular shape so as to correspond to the cross-sectional shape of the insertion hole 143.

Hook portions 221 having inclined surfaces are formed to protrude from lower ends of outer surfaces of the first and second protrusions, respectively, so as to have a smaller cross-sectional area.

That is, the lower portion of the protrusion 220 is formed in a hook shape.

Unlike the above, the protrusion 220 may be provided in only one, and may be formed in a hook shape.

Engaging protrusions 222 are formed on outer surfaces of the first and second protrusions so as to be positioned above the hook portion 221.

A reinforcing part 223 is disposed below the holder part 210 and is disposed between the first and second protrusion parts to connect the holder part 210, the first protrusion part, and the second protrusion part to each other.

Due to the reinforcing portion 223, the protrusion 220 may be prevented from being damaged during elastic deformation.

When the projection 220 of the airbag module fixing bolt holder 200 is inserted into the insertion hole 143, the projection 220 is elastically deformed to narrow the interval between the first projection and the second projection. The part 221 is inserted, and after that, the assembly of the airbag module fixing bolt holder 200 and the lower cover 140 is completed by the locking protrusion 222.

Here, after the airbag module fixing bolt holder 200 is fitted, the installation portion 142 of the lower cover 140 is disposed between the upper surface of the hook portion 221 and the lower surface of the locking protrusion 222 to fix the bolt holder 200. The protrusion 220 is not moved up and down in the up and down direction, and the protrusion 220 is formed in a polygonal shape so that the bolt holder 200 is stably fixed because it is not rotated with respect to the lower cover 140.

As such, simply assembling the airbag module fixing bolt holder 200 to the lower cover 140, the assembly is completed, the assembly process is simplified, and the airbag module fixing bolt holder 200 is fixed to the lower cover 140 There is an advantage in that the number of parts is reduced because there is no need for a separate bolt.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art various modifications or variations of the present invention without departing from the spirit and scope of the invention described in the claims below Can be carried out.

According to the mounting structure of the lower cover for the steering wheel driver's seat airbag and the airbag module fixing bolt holder and the steering wheel driver's airbag module fixing bolt holder of the present invention as described above, the following effects are obtained.

The bolt holder for fixing the airbag module includes a holding part in which a fitting hole into which a bolt is fitted and a protrusion formed in the holding part, and an insertion hole into which the protrusion is inserted is formed in the lower cover, thereby inserting the bolt holder into the lower cover. If the assembly is completed, the assembly process is simplified, and there is an advantage that the number of parts is reduced by eliminating the need for a separate bolt for fixing the airbag module fixing bolt holder to the lower cover.

In addition, since the structure of the airbag module fixing bolt holder and the lower cover necessary for fastening the airbag module fixing bolt holder to the lower cover through the bolt is unnecessary, the shape of the inner circumferential surface of the lower cover is simplified to facilitate molding. The space occupied by the module fixing bolt holder is also reduced, thereby maximizing the space utilization rate of the lower cover in which the steering wheel driver's seat airbag module is mounted.

The protrusion includes a first protrusion and a second protrusion disposed to be spaced apart from the first protrusion, and is formed below the holding part, and the cross-sectional shape of the first protrusion and the second protrusion is polygonal, and the On the outer surface of the first protrusion and the second protrusion, hook portions having inclined surfaces are formed to protrude, respectively, so as to have a smaller cross-sectional area toward the bottom, and the hooking protrusions are formed on the outer surfaces of the first and second protrusions so as to be above the hook portion. Groups are each formed, and one or more incision grooves are formed in front of the holding portion so as to communicate with the fitting holes, and the protrusions can be easily inserted into the insertion holes by elastic deformation of the protrusions. The lower cover is disposed between the hook part and the locking protrusion so that the upper and lower directions of the bolt holder for fixing the airbag module are not separated. The protrusion has the advantage is not having a polygonal not pivot about the lower cover is reliably the airbag module fixing bolt for fixing the holder.

Claims (2)

Lower cover; It includes a bolt holder for fixing the driver's seat airbag module mounted to the lower cover, The driver's seat airbag module fixing bolt holder includes a holding part formed with a fitting hole into which the bolt is fitted, and a protrusion formed in the holding part. The lower cover for the steering wheel driver's seat airbag and the driver's seat airbag module fixing bolt holder mounting structure, characterized in that the lower cover is formed with the insertion hole is inserted into the projection. The method of claim 1, The protrusion part is formed below the holding part, including a first protrusion part and a second protrusion part spaced apart from the first protrusion part. The cross-sectional shape of the first protrusion and the second protrusion is polygonal, Hook portions each having an inclined surface are formed on the outer surfaces of the first protrusion and the second protrusion so as to have a smaller cross-sectional area downward, respectively. Engaging protrusions are formed on outer surfaces of the first and second protrusions so as to be positioned above the hook portion, respectively. One or more incision grooves are formed at the front end of the holding part so as to communicate with the fitting hole, and a lower cover for the steering wheel driver's seat airbag is formed on the inner circumferential surface of the holding part, the protrusion being fitted into the groove formed in the bolt. Bolt holder mounting structure for driver's seat airbag module.

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