JPH0814231A - Stopping tool - Google Patents

Abstract

PURPOSE:To assure complete watertightness in a female and male fitting type stopping tool which comprises two parts of a male member and a female member. CONSTITUTION:This stopping tool comprises a male member 1 and a female member 11, and the male member 1 has a head part 2 for holding a part and a shaft part 3 drooped from the head part 2, and the female member 11 has a hollow body part 12 into which the shaft part of the male member is inserted and a seal flange part 13 provided in the external edge of the opening of the upper end of the hollow body part. An annular elastic seal piece 20 is formed which is closely fitted to either one of the peripheral surface side of the shaft part of the male member or the inner edge side of the opening of the upper end of the hollow body part and at the point of time when the female and male members are fitted, it is closely fitted to the other-side opposite surface. Thereby, the elastic seal piece formed on one side is closely fitted to the other- side opposite surface, for instance, a slit 15 exists on the hollow body side, and therefore even when water enters into the hollow body part of the female member, it can be completely prevented that water enters into the part side along the shaft part of the male member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a male and female fitting type stopper for fixing decorative parts such as a trim board of an automobile to a panel side.

[0002]

2. Description of the Related Art As a conventional stopper of this type, there is, for example, one disclosed in Japanese Utility Model Laid-Open No. 64-35206. Although not specifically shown, the conventional stopper is a two-piece component including a male member attached to a decorative component side such as a trim board and a female member attached to an attachment hole previously drilled on the panel side. The former male member is formed of a synthetic resin into a pin-shaped body and has a head portion for holding the decorative component and a shaft portion provided with an enlarged engaging portion at the lower end, and the latter female member is , A cylindrical body made of synthetic resin, into which the shaft portion of the male member is inserted, a through-hole-shaped hollow barrel portion, a seal flange portion provided on an outer edge of an upper end opening of the hollow barrel portion, and a hollow barrel portion. The side walls facing each other have a pair of locking claws provided via slits.

In actual use, the head part of the male member holds the decorative part, while the hollow body part of the female member is fitted into the mounting hole of the panel through the pair of locking claws. Is
When the shaft part of the male member is inserted into the hollow body part of the female member, the lower end of the shaft part projects downward from the lower end side opening of the hollow body part, and the enlarged engagement part is locked to the lower edge of the hollow body part. Because
As a result, the male member and the female member are mated with each other to fix the decorative component to the panel side.

[0004]

However, in the conventional stopper, if the seal flange portion is provided on the outer edge side of the upper end opening of the hollow body portion of the female member, the clasp will also be against the hollow body portion. Has a slit that allows each locking claw to bend inward and outward, and when water enters the hollow body of the female member through the slit, the water will then move to the shaft of the male member. There is a risk that the decorative surface of the part may be soiled by penetrating the decorative part side along the part. Incidentally, in this conventional stopper, for the time being, the head for holding the decorative component is defined by a pair of upper and lower holding flanges, and in particular, the lower holding flange is brought into contact with the opening edge of the hollow body portion of the female member. However, since the lower holding flange is molded as a rigid body, even if the lower holding flange comes into contact with the opening edge of the hollow trunk of the female member, this does It is absolutely impossible to prevent water from penetrating into the decorative component side when not only the watertight sealing effect is not obtained, but even if the male member is slightly displaced from the female member. Met.

Therefore, under such a structure, in order to prevent water from penetrating into the decorative component side, as shown in Japanese Utility Model Laid-Open No. 4-50585, the use of sealing means such as a seal washer is separately required. Inevitably, in this case, there is a problem in terms of the number of parts,
In particular, a complicated mounting operation of the sealing means is newly required. Incidentally, there is a type in which a locking claw is not formed on the hollow body portion of the female member, such as a fastener shown in Japanese Utility Model Laid-Open No. 4-50706, but in this case, the hollow body portion is provided with a side wall. Therefore, it is necessary to open a plurality of split slits that allow the side wall to expand outward, so that water still penetrates into the female member through the split slits, and the same problem is caused. The Rukoto.

[0006]

The present invention was developed in order to effectively solve the problems of these conventional stoppers.
It consists of two parts, a resin male member attached to the component side and a resin female member that is engaged with the attachment hole of the panel, and the male member hangs down from the head holding the component and the head. The female member has a shaft portion, and the female member has a hollow body portion into which the shaft portion of the male member is inserted, and a stopper having a seal flange portion provided at an outer edge of an upper end opening of the hollow body portion. When the male and female members are fitted to either the outer peripheral surface side of the shaft portion or the inner edge side of the upper end opening of the hollow body portion of the female member, an annular elastic seal piece that closely adheres to the other opposing surface is integrated. The structure to form is adopted. In addition, specifically, a large-diameter annular bulging wall is integrally formed on the shaft portion of the male member, and an annular elastic sealing piece is provided on the inner edge side of the upper end opening of the female member with an annular groove interposed. It is preferable that the elastic seal piece is formed of a soft material by a two-color molding method.

[0007]

Therefore, even when the decorative component is fixed to the panel side even under the stopper of the present invention, the decorative component is held by the head of the male member, while the mounting is pre-drilled on the panel side. The hollow body portion of the female member is engaged in the hole, and then the shaft portion of the male member is inserted into the hollow body portion of the female member, so that the male member and the female member are fitted with each other to form a decorative component. Is fixed to the panel side. However, in such a fixed state of the decorative component, the elastic seal piece formed on either the outer peripheral surface side of the shaft portion of the male member or the inner edge side of the upper end opening of the hollow body portion of the female member is Since it will be closely adhered to the facing surface of, for example, even if there are slits on the hollow barrel side and water enters the hollow barrel of the female member through the slits, the shaft portion of the male member It can be completely prevented from penetrating to the side of the decorative component along the line.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the illustrated embodiments.
As shown in FIG. 1, it is composed of two parts, a male member 1 and a female member 11, which are separately molded from synthetic resin. And the former male member 1
As shown in FIG. 2, has a head 2 for holding parts and a shaft portion 3 having an enlarged engaging portion 4 at the lower end thereof.
Defined by two holding flanges 6 and 7 that are separated by
The enlarged engagement portion 4 of the shaft portion 3 is formed in a shape that tapers from the downward inclined surface 8 on the upper surface side toward the tip, while the entire circumference of the base of the shaft portion 3 is provided with a large-diameter tapered side surface 9a. The bulging wall 9 is integrally formed.

As shown in FIG. 3, the latter female member 11 has a bottomed hollow barrel 12 into which the shaft 3 of the male member 1 is inserted, and an outer edge of an upper end opening of the hollow barrel 12. The seal flange portion 13 is provided, and a pair of locking claws 14 are provided on the opposing side walls of the hollow body 12 via the inverted U-shaped slits 15. The inside of each locking claw 14 is provided. A protrusion 16 having upper and lower tapered guide surfaces 17 and 18 is integrally formed on the lower side, and the shaft of the male member 1 is formed on the inner surface of the opposing side wall of the hollow body 12 where the locking claws 14 are not provided. A pair of locking step portions 1 for locking the enlarged engagement portion 4 provided at the lower end of the portion 3.
9 is integrally formed, and a stopper wall 14b that is bulged upward toward the inner side of the tip end portion 14a of each locking claw 14 is formed.
It is configured to project. And in addition to this,
An annular elastic seal piece 20 is integrally formed on the inner edge side of the upper end opening of the hollow body portion 12 with an annular groove 21 allowing the outward bending to intervene to fit the male and female members 1 and 11. At the same time, this elastic seal piece 20 is pushed outward by the bulging wall 9 to be expanded. In the figure, 22 is a die-cutting hole for forming each of the locking step portions 19.

In the first embodiment, as a molding material for the male member 1 and the female member 11, a hard material such as polyacetal is used in principle, but the elastic seal piece 20 is used.
A soft material such as an elastomer or vinyl chloride is used as the molding material, and in particular, the elastic seal piece 20 is positively provided with flexibility by molding only the elastic seal piece 20 by the two-color molding method. When it is pushed outward by the bulging wall 9, it is in close contact with the tapered side surface 9a of the bulging wall 9 so that a perfect watertight sealing property can be secured.

Therefore, when the decorative component P1 is fixed to the panel P2 side by using the stopper having such a structure, the two holding members that define the head 2 of the male member 1 are held as in the conventional case. While holding the decorative component P1 between the flanges 6 and 7, the hollow body portion 12 of the female member 11 is fixed in the mounting hole H on the panel P2 side via the seal flange portion 13 and the pair of locking claws 14. After that, when the shaft portion 3 of the male member 1 is inserted into the hollow body portion 12 of the female member 11, since the enlarged engagement portion 4 of the shaft portion 3 is locked by the pair of locking step portions 19, As a result, as shown in FIGS. 4 and 5, the male member 1 and the female member 11 are mated with each other to fix the decorative component P1 to the panel P2 side. When the shaft portion 3 is inserted, the enlarged engagement portion 4 of the shaft portion 3 comes into contact with the upper tapered guide surface 17 of the protrusion portion 16 and pushes the locking claws 14 outward to push the protrusion portion 16 outward. Since it can pass through, there is no concern that the presence of the protrusion 16 will be an obstacle.

Further, in the fixed state of the decorative part P1, as described above, the bulging wall 9 is formed on the shaft portion 3 side of the male member 1 and the hollow body portion 12 side of the female member 11 is formed. Elastic seal piece 20
Therefore, under the fitted state of the male and female members 1 and 11, in particular, as shown in FIG. 6, while the elastic seal piece 20 is expanded outward by the bulging wall 9, Since it is tightly adhered to the entire circumference of the tapered side surface 9a of the bulging wall 9 by utilizing the property, for example, the hollow body portion 12
Even if the slit 15 exists on the side and water enters the hollow body portion 12 of the female member 11 through the slit 15, the male member 1
It is possible to completely prevent the light from penetrating to the side of the decorative component P1 along the shaft portion 3 of the above. Moreover, in the first embodiment, the elastic seal piece 20 is not formed on the male member 1 side,
Since it is formed on the female member 11 side, even if the male member 1 is displaced in the direction in which it is separated from the female member 11, the elastic seal piece 20 is deformed and the tapered side surface of the bulging wall 9 is followed. Since the close contact state with 9a can be continuously maintained, the complete watertight sealing effect can be expected from this point as well.

On the contrary, when the fixed decorative part P1 is removed from the panel P2 side, the shaft part 3 of the male member 1 and the female member 1 are together with the decorative part P1 in the first embodiment.
The hollow body 12 of the male member 1 is pulled out from the hollow body 12 of the male member 1 at this time.
When attempting to pull it out from the hollow body portion 12 of No. 1, this time, as shown in FIG.
While pressing the lower tapered guide surface 18 of the above, in particular, the tip end 14a side of each corresponding locking claw 14 is forcibly pushed outward to expand the locking region for the hole edge of the mounting hole H, Since it is possible to strengthen the locked state, the tip portion 14a of the locking claw 14 is attached to the mounting hole H, for example.
Even if it is locked to the rounded sagging edge of the female member 11, only the shaft portion 3 of the male member 1 resists the protrusion 16 and the locking step 19 inside the hollow body portion 12 of the female member 11. Will be surely pulled out from. In this case, if the tip portions 14a of the pair of locking claws 14 are about to be pushed outwards, the stopper walls 14b provided on the tip portions 14a will be removed. Since it collides with the hole edge of the mounting hole H and prevents further pushing out, there is no concern that the locking state of the locking claw 14 will be released from this point as well.

In the first embodiment, the elastic seal piece 2 is used.
0 to the annular groove 21 on the inner edge of the opening of the hollow body 12 of the female member 11.
However, the present invention is not limited to this, and as shown in FIG. 8A, the elastic seal piece 20 alone is formed on the upper surface side of the inner edge of the opening. Alternatively, as shown in FIG. 8B, it is needless to say that a similar watertight sealing effect can be expected by forming only the elastic seal piece 20 alone on the peripheral surface on the inner edge side of the opening.

Next, the stopper according to the second embodiment will be described. This second embodiment basically assumes the structure of the first embodiment as it is, but the first embodiment. The difference from the example is that, as shown in FIG. 9, the shaft portion 3 of the male member 1 is
An annular elastic seal piece 20 formed by a two-color molding method is integrally formed on the outer peripheral surface of the female member, and in a fitted state of the male and female members 1 and 11, the female member facing the elastic member while bending the elastic seal piece 20. It is intended to obtain a similar watertight sealing effect by closely contacting the inner peripheral surface of the hollow body 12 of No. 11 with each other. Therefore, even under the second embodiment, for example, the slit 15 exists on the hollow body 12 side,
Even if water intrudes into the hollow body portion 12 of the female member 11 from the inside, it penetrates along the shaft part 3 of the male member 1 to the side of the decorative component P1 and stains the decorative surface of the component P1. It can be completely prevented.

In each of the above embodiments, the male member 1
The head portion 2 of the male member 1 is defined by two holding flanges 6 and 7 which are separated from each other. However, under the present invention, the head portion 2 itself of the male member 1 is not so significant. It is also optional to substitute the above means depending on the implementation.

[0017]

As described above, according to the present invention, by adopting the above structure, for example, slits are present on the hollow body side of the female member, and water penetrates into the hollow body portion of the female member through the slits. However, since it is possible to completely prevent water from penetrating the decorative component side along the shaft of the male member, it is possible to completely prevent the decorative component from being soiled. Moreover, according to the present invention, it is only necessary to integrally form the elastic seal piece on either the shaft portion of the male member or the hollow body portion side of the female member without separately using an independent sealing means. Therefore, it is reasonably economical in terms of the number of parts. Moreover, if this elastic seal piece is molded from a soft material by a two-color molding method, the watertight sealing effect can be further improved.

[Brief description of drawings]

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

FIG. 2 is a sectional view taken along the line AA of FIG.

3A is a sectional view taken along line BB of FIG. 1, and FIG. 3B is FIG.
6 is a cross-sectional view taken along the line CC of FIG.

FIG. 4 is a cross-sectional view showing a state in which a decorative component is fixed to a panel from one direction.

FIG. 5 is a cross-sectional view showing a state in which the decorative component is fixed to the panel from another direction.

FIG. 6 is an enlarged cross-sectional view of an essential part for explaining a state in which the elastic seal piece is in close contact with the shaft portion side of the male member.

FIG. 7 is an enlarged half sectional view of an essential part for explaining a pulled-out state of a shaft portion of a male member.

8 (A) and 8 (B) are enlarged cross-sectional views of a main part showing an example of how the elastic seal piece is formed with the male and female members in a fitted state.

FIG. 9 is an enlarged sectional view of an essential part showing a stopper according to a second embodiment in a fitted state of male and female members.

[Explanation of symbols]

 1 Male Member 2 Head 3 Shaft 9 Bulging Wall 11 Female Member 12 Hollow Body 13 Seal Flange 14 Locking Claw 15 Slit 20 Elastic Seal Piece 21 Annular Groove P1 Decorative Part P2 Panel H Mounting Hole

Claims (3)

[Claims] 1. A male member made of a resin attached to a component side and a female member made of a resin engaged with a mounting hole of a panel, wherein the male member has a head for holding the component, In a stopper having a shaft portion that hangs from the head portion, the female member is a hollow body portion into which the shaft portion of the male member is inserted, and a seal flange portion provided at an outer edge of an upper end opening of the hollow body portion, An annular elastic seal that closely adheres to the opposite surface of the male member when the male and female members are fitted to either the outer peripheral surface of the shaft of the male member or the inner edge of the upper end opening of the hollow body of the female member. A stopper characterized in that the piece is integrally formed. 2. A large-diameter annular bulging wall is integrally formed on the shaft portion of the male member, and an annular elastic seal piece is provided on the inner edge side of the upper end opening of the hollow trunk portion of the female member with an annular groove interposed. The stopper according to claim 1, wherein the stopper is formed integrally. 3. The stopper according to claim 1, wherein only the elastic seal piece is molded from a soft material by a two-color molding method.