JP2602262Y2 - Trim fixing structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a fixing structure for fixing various vehicle trims such as a footrest to a stud bolt provided on a vehicle body via a clip.

[0002]

2. Description of the Related Art As a conventional fixing structure of this kind, there is an actual fair 2
No. 47288 / Japanese Utility Model Publication No. 3-46251. Although these conventional fixing structures have some structural differences, on the trim side, a desired decorative pattern is formed on the upper surface, and a through hole for inserting a clip shaft body on the lower surface. A cylindrical tubular body defining the above is integrally suspended, and a step portion for locking and a vertical groove for positioning are formed on the inner surface of the tubular body. A decorative pattern equal to the decorative pattern is formed, and a locking claw for locking the threaded surface of the stud bolt is formed inside the hollow portion of the shaft body, and the locking step portion is formed on the outside of the coaxial body from below. The locking piece that locks and the small projection that engages with the positioning vertical groove are formed integrally with each other.

When the trim is actually fixed to a stud bolt provided on the vehicle body, a posture in which the positioning vertical groove and the small projection can be engaged is obtained, and the clip shaft is inserted into the trim cylinder. When the body is inserted, the locking piece formed on the shaft body is locked to the locking step of the cylindrical body, and the clip is pre-attached to the trim side. When the stud bolt is fitted into the hollow portion of the clip shaft from the opening at the lower end thereof, the locking claw formed inside the hollow portion of the shaft is locked to the threaded surface of the stud bolt. As a result, the clip is fixed to the stud bolt and the trim is fixed to the vehicle body via the stud bolt. In the fixed state of the trim, the decorative pattern on the trim upper surface and the decorative pattern on the clip head are aligned by the positioning engagement of the positioning vertical groove and the small protrusion described above. As a whole, a continuous appearance is guaranteed, and there is no concern that the appearance will be impaired.

When it is necessary to remove the trim once fixed from the stud bolt side, the clip is removed by a tool such as a flathead screwdriver using a groove of a decorative pattern formed on the head of the clip. If rotated in a predetermined removal direction, small projections formed on the outside of the clip shaft are sequentially disengaged from the positioning vertical grooves on the cylindrical body side, and the rotation of the clip is allowed. Then, the trim can be removed from the stud bolt side with the clip attached to the cylinder.

[0005]

However, when the trim is to be removed from the stud bolt side under the conventional fixing structure, if the clip is rotated in a predetermined removing direction along the screw surface, it is certain. Although it is possible to remove the trim, structurally, the clip can be rotated not only in the removal direction but also in the opposite tightening direction. When the is rotated in the opposite tightening direction, the locking claw which is locked on the thread surface of the stud bolt is broken or damaged, and there is a big problem that the re-use cannot be performed. I was

[0006]

SUMMARY OF THE INVENTION The present invention has been developed in order to effectively solve the problems of the conventional fixing structure, and a trim having a decorative pattern formed on an upper surface is provided on a stud provided on a vehicle body. When fixing to a bolt through a clip, a trim is provided with a cylindrical tube into which the shaft of the clip is inserted, and for the clip, a decoration equal to the decoration pattern is provided on the upper surface of the head. Form a pattern,
On the premise of a trim fixing structure in which a locking claw that locks to a threaded surface of a stud bolt is formed in a hollow portion of the shaft body, two pairs of elastic pieces that can be bent are provided facing each other on the cylinder body of the trim. A positioning rib is formed on the inner surface of one of the opposing elastic pieces, and a lock claw is formed on the inner surface of the other opposing elastic piece, while an annular flange is provided on the shaft of the clip,
A cam groove having a one-way function for fitting the positioning rib on the opposite side surface of the flange is formed, and only when each of the cam grooves and each positioning rib match, the trim side decorative pattern and the clip side. A configuration is adopted in which the shaft of the clip descends in the trim cylinder so that the lock claw is engaged with the upper surface of the flange in alignment with the decorative pattern.

[0007]

Therefore, according to the present invention, when the shaft of the clip is inserted into the cylinder of the trim, and the cam groove of the flange and the positioning rib of the cylinder match, the shaft of the clip is left as it is. If the cam groove and the positioning rib do not match, the side edge of the flange where the cam groove is not formed abuts on the positioning rib, and the shaft body further moves down. Since the descent is temporarily prevented, the operator grasps the clip's head, rotates the clip, aligns the cam groove with the positioning ribs, and then pushes the clip's head lightly For example, since the flange provided on the shaft of the clip promotes outward bending of the other opposing elastic piece and pushes the lock claw outward while passing through the lock claw, Lock claw on top of flange And sealed sexually engaged, the clip is tipped into the cylindrical body of the trim.

Therefore, as in the prior art, if the stud bolt provided on the vehicle body is fitted into the hollow portion of the clip shaft from the lower end side opening in the same state as in the prior art, the stud bolt is formed inside the hollow portion. The engaging claw is elastically engaged with the thread surface of the stud bolt, so that the trim is fixed to the vehicle body via the stud bolt, and the trim is formed on the head of the clip. By using the decorative pattern provided and rotating the clip in the specified removal direction with a tool such as a flathead screwdriver, the trim can be easily removed from the stud bolt side while the clip is attached to the cylinder. Become.

However, according to the present invention, since the one-way function is provided to the cam groove formed on the flange side, the clip is rotated in the opposite tightening direction when the trim is removed. However, the rotation of the clip in the same direction is reliably prevented by the action of the cam groove, so that the locking claw which is locked to the threaded surface of the stud bolt by mistake in the rotation direction of the clip as in the related art is broken. Or, the worry that the paper is damaged and cannot be reused can be effectively eliminated.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Now, the present invention will be described in detail with reference to an embodiment shown in the drawings. The fixing structure according to the embodiment also has a desired decorative pattern 1a on the upper surface as shown in FIG. The trim 1 thus formed is fixed to a stud bolt B provided on the vehicle body panel P via a clip 11 made of synthetic resin. The shaft 13 of the clip 11 is inserted into the trim 1. A cylindrical cylindrical body 2 defining a through hole is vertically provided integrally, and a decorative pattern 11a equal to the decorative pattern 1a is formed on the upper surface of the head body 12 for the clip 11 side, and its axis is formed. It is premised that a pair of locking claws 14 for locking to the screw surface of the stud bolt B are integrally formed inside the hollow portion 13a of the body 13,
The feature is that the following configuration is adopted.

That is, in this embodiment, as shown in FIG. 2, two pairs of elastic pieces 3 and 4 which can be bent are formed in the lower side of the small diameter of the cylinder 2 of the trim 1 by four slits 5. Provided through
Positioning ribs 6 that fit into cam grooves described later are formed on the inner surface of one of the opposing elastic pieces 3 so as to protrude inward,
On the inner surface of the other opposing elastic piece 4, a lock claw 7 that elastically locks to an upper surface of a flange described later is also formed so as to protrude inward. An annular step 8 for mounting and supporting a guide flange described later is formed.

In this embodiment, as shown in FIG. 3, an annular guide that guides the insertion of the clip 11 into the cylinder 2 substantially at the center of the shaft 13 and contacts the step 8. A flange 15 is integrally provided, and an annular flange 16 is integrally provided at a lower end edge of the hollow portion 13a.
6, a pair of cam grooves 17 are formed on opposing side surfaces, and only when each cam groove 17 matches the positioning rib 6,
The decorative pattern 1a on the trim 1 side is aligned with the decorative pattern 11a on the clip 11 side, and the shaft 1
The structure is such that the lock claw 7 can be automatically locked on the upper surface of the flange 16 by lowering the inside of the cylinder 2 of the trim 1.

When the clip 11 is rotated in the removing direction with the positioning ribs 6 fitted into the pair of cam grooves 17 as shown in FIG.
While the rotation can be allowed while pushing the positioning rib 6 outward, on the contrary, when the clip 11 is rotated in the tightening direction, the guide surface 17a can contact the side surface of the positioning rib 6 to prevent the rotation. Stopper surface 17
A configuration is adopted in which a one-way function is exhibited by giving a cam shape having b. In terms of dimensions, only the distance between the opposed cam grooves 17 of the flange 16 is set to be smaller than the distance between the opposed positioning ribs 6 of the cylindrical body 2.

Therefore, when the trim 1 is fixed to the stud bolt B under such a configuration, the shaft 13 of the clip 11 is placed in the cylinder 2 of the trim 1 in this embodiment. The insertion is performed from the flange 16 side. However, if the cam groove 17 of the flange 16 and the positioning rib 6 of the cylindrical body 2 naturally match during the insertion process, the existence of the positioning rib 6 hinders. The shaft 13 of the clip 11 is kept in a state where the positioning rib 6 is fitted into the cam groove 17 without any
Descends in the cylindrical body 2. If the cam groove 17 does not match the positioning rib 6, as shown in FIG.
The side edge of the flange 16 on which the cam groove 17 is not formed abuts on the pair of positioning ribs 6, and the clip shaft 1
3 further drops are temporarily blocked.

Therefore, when the lowering of the shaft 13 is prevented, the operator grips the head 12 of the clip 11 and rotates the clip 11 to align the cam groove 17 with the positioning rib 6. However, at this time, even if the operator does not check while visually confirming, simply rotate while grasping the head body 12 that is sufficiently protruding upward, Since the positioning of the cam groove 17 and the positioning rib 6 can be performed, the operation of aligning the decorative pattern 1a on the trim 1 side with the decorative pattern 11a on the clip 11 becomes extremely easy.

When the cam groove 17 and the positioning rib 6 are aligned, the clip 11 is kept in this aligned position until the flange 16 reaches the pair of lock claws 7 as shown in FIG. Since the shaft 13 of the clip 11 smoothly descends with the help of its own weight, the head 12 of the clip 11 is lightly pushed until the guide flange 15 comes into contact with the step 8 in this state. As shown in the figure, the flange 16 formed on the shaft 13 of the clip 11
Since the other opposing elastic piece 4 is pushed outwardly and pushes the pair of lock claws 7 outward, they pass through the lock claws 7, whereby each lock claw 7 corresponds to the flange 16. The clip 11 is elastically locked on the upper surface, and the clip 11 is attached to the cylinder 2 of the trim 1 without falling off. or,
In this state, although not specifically shown, it is needless to say that the decorative pattern 1a on the trim upper surface and the decorative pattern 11a on the clip head 12 are aligned with each other. As long as the ribs 6 are fitted, there is no fear that the clip 11 will rotate carelessly in the cylindrical body 2 and cause a poor alignment condition unless a considerable rotational force is applied.

Therefore, the stud bolt B provided on the vehicle body panel P side is fitted into the hollow portion 13a of the shaft 13 of the clip 11 from the lower end side opening in the same state as in the prior art. And, this time, as shown in FIG.
When the clip 11 is automatically fixed to the stud bolt B, the pair of locking claws 14 formed inside the hollow portion 13a elastically lock to the threaded surface of the stud bolt B. At the same time, the trim 1 is securely fixed to the vehicle body panel P via the stud bolt B. At this time, a force is applied to the clip 11 in a direction in which the clip 11 is disengaged from the cylindrical body 2. In this embodiment, the pair of lock claws 7 is elastically engaged with the upper surface of the flange 16. Since the clip 11 is stopped, the clip 11
Never worry about getting out of the way. In the fixed state of the trim 1, in order to strengthen the relationship with the vehicle body panel P, as shown in FIG. It is optional depending on the implementation that the reinforcing wall 9 is vertically provided.

When it is necessary to remove the trim 1 once fixed from the stud bolt B side, the groove of the decorative pattern 11a formed on the head 12 of the clip 11 is used even in the present embodiment. Then, when the clip 11 is rotated in the removing direction with a tool such as a flathead screwdriver, as shown in FIG.
Due to the action of a, the flange 16 can smoothly rotate in the same direction within the cylindrical body 2 while urging the one of the opposing elastic pieces 3 outwardly and pushing the positioning ribs 6 outward. While it is possible to easily remove the trim 1 from the stud bolt B side while the clip 11 is attached to the inside of the cylindrical body 2, at the time of such work, one of the opposing elastic pieces 3 is formed by slitting the slit 5. Since the clip 11 can be easily bent outward, there is an advantage that the rotation of the clip 11 can be performed very easily.

However, during the removal work,
When the operator rotates the clip 11 in the opposite tightening direction, in particular, as shown in FIG. 6B, the stopper surface portion 17b of the cam groove 17 comes into contact with the side surface of the positioning rib 6 and moves in the same direction. , The rotation direction of the clip 11 is erroneously changed, and the pair of locking claws 14 locked on the threaded surface of the stud bolt B is broken or broken, as in the related art. The worries of being unable to do so can be completely eliminated.

[0020]

[Effect of the Invention] As described above, the present invention adopts the above-described structure, and even if the clip is erroneously rotated in the opposite tightening direction at the time of trim removal work, the one-way function of the cam groove allows the clip to rotate in the same direction. Since the rotation of the clip can be reliably prevented, the locking claw, which is locked to the threaded surface of the stud bolt, is broken or broken as in the prior art, so that the clip cannot be reused. Worries can be effectively resolved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a main part of a fixing structure according to an embodiment of the present invention.

FIGS. 2A and 2B show a main part configuration on a trim side.
Is a vertical cross-sectional view of a main part viewed from a different direction, and (C) is a bottom view.

3 (A) is a front view, FIG. 3 (B) is a sectional view taken along line AA of FIG. 3 (A), and FIG. 3 (C) is a bottom view.

FIG. 4 is a longitudinal sectional view of an essential part showing a state in which a flange of a clip is in contact with a positioning rib.

FIG. 5 is a longitudinal sectional view of an essential part showing a state in which a flange of a clip is lowered along a positioning rib.

6A is a longitudinal sectional view of a main part showing a state in which a clip is completely attached to a trim cylinder, and FIG. 6B is a sectional view of FIG.
FIG. 7 is a sectional view taken along line BB of FIG.

FIG. 7 is a longitudinal sectional view of a main part showing a state where the trim is fixed to the stud bolt.

FIG. 8 is a cross-sectional view of a main part illustrating a state where the flange of the clip rotates in the removing direction inside the cylinder.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Trim 1a Decorative pattern 2 Cylindrical body 3 One opposing elastic piece 4 The other opposing elastic piece 5 Slit 6 Positioning rib 7 Lock claw 11 Clip 11a Decorative pattern 12 Head 13 Shaft 13a Hollow part 14 Stopper 16 Flange 17 Cam groove 17a Guide surface 17b Stopper surface B Stud bolt P Body panel

Claims (1)

(57) [Scope of request for utility model registration] When a trim having an ornamental pattern formed on an upper surface thereof is fixed to a stud bolt provided on a vehicle body via a clip, a cylindrical body for inserting a shaft of the clip into the trim. And for the clip,
In the trim fixing structure, a decorative pattern equal to the decorative pattern is formed on an upper surface of the head, and a locking claw that locks to a threaded surface of a stud bolt is formed in a hollow portion of the shaft body. A pair of elastic pieces that can be bent are provided to face each other, a positioning rib is formed on the inner surface of one of the opposing elastic pieces, and a lock claw is formed on the inner surface of the other opposing elastic piece. An annular flange is provided on the shaft body, and a cam groove with a one-way function for fitting the positioning rib on the opposite side surface of the flange is formed, and only when each cam groove and each positioning rib match. The decorative pattern on the trim side and the decorative pattern on the clip side are aligned with each other, so that the shaft of the clip descends within the cylinder of the trim, and the lock claw is engaged with the upper surface of the flange. When Trim of the fixed structure that.