JPH0932825A - Fixing clip - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixing clip in which an installation part can be extremely easily removed. SOLUTION: A fixing clip comprises two parts of a grommet body 1 in which a blind hole having a bottom wall 3a is bored from a flange part 2 into a trunk part, and a pin body 11 having a shaft part 12 to be rotatably inserted into the blind hole in the grommet body 1. A pair of lock protrusions 5 are provided in facing wall surfaces of the blind hole in the grommet body 1 to each other, the tip part 12a side of the shaft part 12 of the pin body 11 is set in a width size smaller than an interval width between the lock protrusions 5, and a pair of overhang shoulders 15 are provided to be locked to the respective lock protrusions 5 having the same width size on both sides of a tip part of the smaller size. In addition, a recessed part 16 is formed in either one of shaft part tip surfaces of the bottom wall 3a of the grommet body 1 and the pin body 11, and a protruded part 7 to be slidably engaged with the recessed part 16 is formed in the other, so engagement of the recessed part 16 with the protruded part 7 is released when the overhang shoulders 15 are removed from the lock protrusions 5 to push the pin body 11 up with its head part 13 as the pin body 11 rotates.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-piece clip used for fixing various mounting parts of an automobile to a predetermined panel, and more particularly to an improvement of a waterproof fixing clip.

[0002]

2. Description of the Related Art An example of a conventional two-piece type fixing clip of this type is disclosed in Japanese Utility Model Publication No. 61-37847. The conventional fixing clip is composed of two parts, a grommet body having a through hole from the flange portion to the inside of the body portion, and a pin body having a shaft portion rotatably inserted into the through hole of the grommet body. The body is divided into a plurality of slits in the body, and a locking projection is provided on the inner surface of each divided body piece.The latter pin body has a spiral step on the outer periphery of the shaft hanging from the enlarged head. Are continuously provided.

In actual use, after the body portion of the grommet body is engaged with the mounting hole that is predrilled on the panel side, the opening of the through hole on the flange portion side and the through hole of the mounting component side are formed. When the shaft portion of the pin body is inserted into the through hole of the body portion while matching the above, the locking protrusions of the divided body pieces are locked to the spiral step portion provided on the shaft portion, Since each of the split body pieces expands outward through the slit, the mounting component is thereby fixed to the panel side.

On the contrary, when it becomes necessary to release the fixed state of the mounting parts, the pin body is rotated in a predetermined direction by utilizing the cross groove formed in the enlarged head portion of the pin body. By doing so, it becomes possible to pull out the shaft portion of the pin body from the through hole of the grommet body by the action of the spiral step portion on the shaft side, so that it is possible to remove the mounting component from the panel side. Become.

Therefore, under such a conventional fixing clip,
It has the advantage that the mounting parts can be securely fixed to the panel side and that the mounting parts can be removed from the panel side as needed, but on the other hand, the body part of the grommet body has a penetrating opening with upper and lower ends. Not only is it perforated, but it is also unsuitable for use in locations where waterproofness is required due to the fact that the body part is divided so that it can be expanded through multiple slits. There is.

Therefore, although not specifically shown, a fixing clip used in a place where waterproofness is required is usually formed by forming a blind hole having a bottom wall from the flange portion of the grommet body to the inside of the body portion. The structure in which the step portion on the pin body side is locked to the locking projection inside the blind hole is exclusively used.

However, under this blind hole structure, when the attachment part is removed from the panel side as necessary, the shaft portion of the pin body must be forcibly pulled out from the blind hole of the grommet body, so this time. However, the work of removing the mounting parts becomes troublesome, and at the time of removal, the locking projections provided on the wall of the blind hole may be damaged, making reuse impossible.

[0008]

Therefore, in view of such inconvenience, for example, a fixing clip provided with a waterproof cap disclosed in Japanese Utility Model Laid-Open No. 2-50508 has been proposed. That is, as for this fixing clip, regarding the grommet body and the pin body, those similar to the conventional one described above are used, but the above-mentioned waterproof cap is provided with a flange portion that abuts the hole edge of the mounting hole of the panel, The structure has a bag portion that is open only on the flange portion side, and in particular, by housing the grommet body in the bag portion, the waterproof property at the connecting portion between the grommet body and the pin body is not ensured.

[0009] Therefore, under the fixing clip provided with the waterproof cap, even if a grommet body and a pin body lacking waterproofness are used, the bag portion of the waterproof cap ensures sufficient waterproofness at the same time. , It becomes possible to remove the mounting parts from the panel side, but this time, with the use of the waterproof cap, the number of parts and the work process increase compared to the normal two-piece type, and the current rationalization The result is against the request. Further, when removing the mounting component from the panel side, the pin body has to be rotated in a predetermined direction by a considerable amount, so that the mounting work cannot be performed easily.

[0010]

The present invention was developed in order to effectively solve such a conventional problem, and a grommet body having a blind hole having a bottom wall from the flange portion to the inside of the body, On the premise of a fixing clip consisting of two parts of a pin body having a shaft portion rotatably inserted into the blind hole of the grommet body, a pair of locking projections are provided on opposing wall surfaces of the blind hole of the grommet body, and the pin body is provided. The width of the tip of the shaft of the shaft is smaller than the space between the pair of locking projections,
A pair of overhanging shoulders with the same width dimension are provided on both sides of the tip portion of the narrow width dimension, and either the bottom wall of the grommet body or the tip end surface of the shaft portion of the pin body is provided. A concave portion is formed on one side, and a convex portion that slidably fits with the concave portion is formed on the other side. When the protruding shoulder is disengaged from the locking protrusion due to rotation of the pin body, the concave portion and the convex portion are formed. Unmating,
The pin body is pushed up together with its head.

Therefore, according to the present invention, when the shank of the grommet body is engaged with the mounting hole of the panel and then the shank of the pin body is inserted into the blind hole of the shank, the shank of the shank is reduced. Since the pair of overhanging shoulders provided on both sides of the widthwise end portion are engaged with the respective engaging protrusions provided on the wall surfaces of the blind hole facing each other, this ensures sufficient waterproofness. Under the condition, the mounting part can be fixed to the panel side.

When the fixed mounting part is removed from the panel side, the pin itself is rotated by 90 ° in the blind hole of the grommet body, and a pair of shaft ends are provided on both sides. The overhanging shoulder will rotate in the same direction while being disengaged from the corresponding locking projection, and will be positioned between the pair of locking projections. It can be easily removed from the panel side.

Moreover, due to the rotation of the pin body, the overhanging shoulder is disengaged from the locking projection, and at the same time, the fitting state between the concave portion and the convex portion is released, and the pin body itself moves upward by the height of the convex portion. Since it is forcibly pushed up, the operator can immediately confirm that the extended state of the overhanging shoulder and the engaging projection is released by visually observing the pushed up state of the pin body, and the pin body is also released. At the time of pulling out, by gripping the head pushed upward, it becomes possible to easily pull out the shaft portion of the pin body from the blind hole of the grommet body.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. Also, the fixing clip according to the first embodiment, as shown in FIG. It is assumed that the grommet body 1 has a blind hole 4 having a bottom wall 3a and a pin body 11 having a shaft portion 12 rotatably inserted into the blind hole 4 of the grommet body 1. However, the feature is that the following configuration is adopted.

First, the former grommet body 1 is an integrally molded product made of synthetic resin, and as shown in FIG. 2, the wall surface on the opposite long side of the blind hole 4 bored in the elliptic body 3 is opposed. To
A pair of locking projections 5 are provided in a state of facing each other, and a pair of locking shoulders 6 for locking the hole edges of the mounting holes of the panel are formed on each outer surface of the long side of the body portion 3, and the blind holes are formed. The bottom wall 3a defining 4 is integrally formed with a protrusion 7 having a predetermined height and width.

On the other hand, the latter pin body 11 is also an integrally molded product of synthetic resin, and as shown in FIG. 3, a cross groove 14 into which a tool end such as a Phillips screwdriver is fitted on the upper surface of the enlarged head 13. Meanwhile, at least the enlarged head 1 is attached.
The chamfering portion of the shaft portion 12 on the side of the tip portion 12a of the shaft portion 12 that is hung from 3 is formed to have a width dimension L2 smaller than the interval width L1 of the pair of locking projections 5, and the tip portion 12a of the small width dimension.
A pair of overhanging shoulders 15 that are locked to the lower surfaces of the locking projections 5 are provided with the same width dimension L2 on both side surfaces facing each other.

In addition to this, the tip end surface of the shaft portion 12 facing the bottom wall 3a of the blind hole 4 is provided with a tapered surface 16a slidably fitted to the convex portion 7 formed on the grommet body 1 side. The recess 16 is formed so that the recess 16 and the projection 7 are fitted together only when the overhanging shoulder 15 is locked by the locking projection 5. Therefore, at least with respect to the concave portion 16 formed on the tip end surface of the shaft portion 12 of the pin body 11, a depth that allows the overhanging shoulder 15 to be locked to the lower surface of the locking projection 5 is provided, and the blind portion is blind. Pin body 11 for hole 4
It is preferable to set it so that there is no fear of hindering the insertion of the shaft portion 12.

Therefore, when the mounting part P1 is fixed to the side of the predetermined panel P2 by using the grommet body 1 and the pin body 11 having such a constitution, the holding action of the flange portion 2 and the respective locking shoulders 6 is performed. After the body portion 3 of the grommet body 1 is engaged with the mounting hole H2 of the panel P2, the blind hole 4 of the body portion 3 and the through hole H1 of the mounting component P1 are aligned and locked. After confirming the directionality of the protrusion 5 and the overhanging shoulder 15 and inserting the shaft portion 12 of the pin body 11 into the blind hole 4 of the body portion 3, as shown in FIG. Get a pair of overhanging shoulders 15
Automatically locks to the lower surface of the corresponding locking projection 5,
As a result, the mounting component P1 is reliably fixed to the panel P2 side under a state where the waterproof property is sufficiently ensured.

When the mounting part P1 is in a fixed state, as shown in the figure, the convex portion 7 on the grommet body 1 side and the concave portion 16 on the pin body 11 side are automatically fitted together, so that the blind hole 4 is inserted. There is no concern that insertion of the shaft portion 12 of the pin body 11 will be hindered.

On the contrary, when the fixed mounting part P1 is removed from the panel P2 side, a tool such as a Phillips screwdriver (not shown) is placed in the cross groove 14 attached to the enlarged head 13 of the pin body 11. When the end is fitted and the pin body 11 is rotated 90 ° in the blind hole 4 together with the shaft portion 12 thereof in an arbitrary direction, as shown in FIG. 5, the pin body 11 is attached to both side surfaces of the narrow tip portion 12a of the shaft portion 12. The pair of overhanging shoulders 15 that are provided rotate in the same direction while gradually disengaging from the corresponding locking projections 5, and finally each of the overhanging shoulders 15 is located between the pair of locking projections 5. Will be located in.

On the other hand, in conjunction with the rotation of the pin body 11 by 90 °, as shown in the figure, the concave portion 16 on the side of the pin body 11 utilizes its own tapered surface 16a to form the convex portion 7 on the side of the grommet body 1. While the sliding state is released in the same direction while unraveling the fitted state, the both side edges of the tip end surface on which the concave portion 16 is formed are automatically placed on the convex portion 7, whereby the pin body 11 itself is convex. It is forcibly pushed upward by a height of 7.

Therefore, the operator can immediately confirm that the extended state of the protruding shoulder 15 and the engaging projection 5 is released by visually observing the pushed-up state of the pin body 11. As it is, it is possible to easily remove the mounting component P1 from the panel P2 side only by pulling out the shaft portion 12 of the pin body 11 from the blind hole 4, but the pin body 11 is pushed up. That is, since the enlarged head portion 13 is easily grasped at the time of pulling out, the pulling out work of the pin body 11 can be performed without difficulty. Moreover,
When the mounting part P1 is removed, there is no concern that the side of the grommet body 1 or the pin body 11 will be damaged or deformed, so that it can be reused sufficiently.

Next, the fixing clip according to the second embodiment will be described. The second embodiment basically also follows the above-described first embodiment as it is, but is different. In order to regulate the rotation direction of the pin body 11 when the mounting part P1 is removed from the panel P2 side, as shown in FIG. The diagonal surface is a vertical surface 7b, and the recess 16 on the pin body 11 side is a simple rectangular recess having no tapered surface 16a.

Therefore, in the second embodiment,
When removing the fixed mounting part P1 from the panel P2 side, the cross groove 14 attached to the enlarged head 13 of the pin body 11
When the tool end is fitted into the pin body 11 and the pin body 11 together with the shaft portion 12 thereof is rotated by 90 ° in the blind hole 4, only in the direction in which the tapered surfaces 7a, 7a of the convex portion 7 are located. Since the pin body 11 cannot be rotated, the pin body 11
It is extremely rational for the specifications that require regulation of the rotation direction of.

Also under the second embodiment, although not specifically shown, the pin body 11 is moved in the allowable direction by 90 degrees.
If it is rotated by °, the taper surface 7a
Using 7a, the concave portion 16 on the pin body 11 side is slidably rotated in the same direction while releasing the fitting state with the convex portion 7 on the grommet body 1 side, and finally the concave portion 16 is formed. Since both side edges of the tip end surface are automatically lifted up on the convex portion 7, the pin body 11 itself is forcibly pushed upward by the height of the convex portion 7 as a result. Therefore, the operator also visually confirms the push-up state of the pin body 11 to check the protruding shoulder 15
It can be confirmed that the locked state between the locking projection 5 and the locking projection 5 has been released, and when the pin body 11 is pulled out, the enlarged head 13 pushed upward is grasped and the shaft portion 12 of the pin body 11 is held.
Can be easily pulled out from the blind hole 4 of the grommet body 1.

In each of the above-mentioned embodiments, the convex portion 7 is formed on the side of the bottom wall 3a of the blind hole 4 of the grommet body 1,
Although the concave portion 16 is formed on the tip end surface side of the shaft portion 12 of the pin body 11, the present invention is not limited to this, and on the contrary, the concave portion is formed on the bottom wall 3a side under the same principle. It goes without saying that even if 16 is formed and the convex portion 7 is formed on the tip side, the pin body 11 itself can be forcibly pushed upward by the height of the convex portion 7. Further, the amount of pushing up the pin body 11 can be freely determined by appropriately adjusting the height of the convex portion 7 and the depth of the concave portion 16 under the conditions described above.

[0027]

As described above, according to the present invention, by adopting the above-mentioned configuration, the pin body is simply rotated by 90 ° while sufficiently ensuring the waterproof property without using the conventional waterproof cap. Since the mounting parts can be easily removed from the panel side, it will be practical and practical. Furthermore, when the pin body rotates, the fitting between the concave and convex parts is released,
Forcibly pushing the pin body upwards
By visually observing the push-up state of such a pin body, it is possible to immediately confirm that the locked state between the overhanging shoulder and the locking projection is released, and at the time of pulling out the pin body, under the forced push-up state. Since the head portion of the pin body can be gripped and the shaft portion of the pin body can be easily pulled out from the inside of the blind hole of the grommet body, workability is extremely improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a fixing clip according to a first embodiment of the present invention.

2A is a cross-sectional view taken along the line AA of FIG. 1, and FIG.
FIG. 6 is a sectional view taken along line BB of FIG.

3A is a front view of the pin body, and FIG. 3B is a side view of the same.

FIG. 4 is a cross-sectional view of essential parts showing a state in which a mounting component is fixed to a panel.

FIG. 5 is a cross-sectional view of essential parts showing a state in which the pin body is rotated by 90 ° and the engagement state of the overhanging shoulder and the engagement projection and the engagement state of the recess and the projection are released.

FIG. 6 is an exploded perspective view of essential parts showing the relationship between a convex portion and a concave portion in the second embodiment.

[Explanation of symbols]

 1 Grommet body 2 Flange portion 3 Body portion 3a Bottom wall 4 Blind hole 5 Locking protrusion 6 Locking shoulder 7 Convex portion 11 Pin body 12 Shaft portion 12a Small width tip of shaft portion 13 Expanding head 14 Cross groove 15 Overhang Shoulder 16 Recessed part P1 Mounting part H1 Through hole P2 Panel H2 Mounting hole L1 Width of locking protrusion L2 Width of shaft tip

Claims (1)

[Claims] 1. A grommet body having a blind hole having a bottom wall extending from a flange portion to a body portion, and a pin body having a shaft portion rotatably inserted into the blind hole of the grommet body.
In the fixing clip composed of parts, a pair of locking projections are provided on the wall surfaces of the blind holes of the grommet body which face each other, and the tip end side of the shaft portion of the pin body has a width dimension smaller than the interval width of the pair of locking projections. It should be noted that a pair of overhanging shoulders for locking the locking projections are provided on both sides of the tip portion of the small width dimension with the same width dimension, and the bottom wall of the grommet body or the tip end surface of the shaft portion of the pin body. A concave portion is formed on one of the two, and a convex portion that slidably fits the concave portion is formed on the other of the concave portions, and when the protruding shoulder is disengaged from the locking projection as the pin body rotates, the concave portion is formed. The fixing clip is characterized in that the pin body is pushed upward together with its head by disengaging the convex portion and the convex portion.