JP2005061459A - Hole plug - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hole plug equipped with a preventing function for water intrusion both from inside and outside of its body member through utilization of the water intruding pressure. <P>SOLUTION: The hole plug is composed of a fitting part 20 to be installed in fitting in a hole 32 bored in the body member 30 and a blocking part 25 having an area and shape able to block the hole 32 and installed rigidly at one end of the fitting part 20. In the blocking part, a seal member is installed endlessly which exerts the waterproofing function for the flow in both directions flowing into and out of the hole in a position outside the hole wherein the function is actuated upon receiving the pressure of the flow. A tight attaching force with pressure contacting acts for water intrusion from either side, in the arrow (a) direction and in the arrow (b) direction as shown in the figure, and the waterproofing function required of a hole plug is secured. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hole plug. In particular, the present invention relates to a hole plug that closes a hole formed in a body member of a vehicle such as an automobile as a work hole or a paint hole with a waterproof function.
[0002]
[Prior art]
In a vehicle such as an automobile, for example, a work hole used at the time of assembling parts and a paint hole used at the time of painting are formed in the body member. Since these work holes and paint holes do not function at all in the finished product state of the automobile, the holes are closed by hole plugs after the role of the holes is finished. In general, these holes are often provided in the body member of the outer plate. Therefore, when the vehicle is in use, it may be exposed to rainwater or muddy water, so the hole plugs have a waterproof function. Is common.
FIG. 4 shows such a hole plug (see Patent Document 1). In FIG. 4, reference numeral 10 denotes a hole plug, and 30 denotes a body member, and in the illustrated state, the upper side indicates the outer surface of the body member 30, that is, the outer surface of the automobile. The body member 30 has a hole 32 for the above-described role, and the fitting portion 20 of the hole plug 10 is fitted into the hole 32 and attached thereto. In the illustrated state, an engaging claw 21 is attached to the lower end of the fitting portion 20, and the engaging claw 21 is attached to be engaged with the edge of the hole 32. The engaging claw 21 is provided with a spring action that can be bent inward, and this spring action is applied to the engagement between the engaging claw 21 and the hole 32 so that the fitting portion 20 is pulled upward. Engage so that there is no.
A closing portion 25 for closing the hole 32 is integrally attached to the upper end of the fitting portion 21 on the outer surface side of the upper body member 30 in the drawing. The closed portion 25 is formed in a disc shape, and a seal piece 27 is integrally provided at the outer peripheral end thereof. The seal piece 27 is formed so as to extend downward in the outward direction as seen in the figure, and is arranged in a state of being in contact with the body member 30.
[0003]
As shown in FIG. 5, the conventional hole plug 10 has the above-described configuration, so that water enters from the outer surface side of the upper body member 30 to the lower inner surface side, that is, from the direction indicated by the arrow (a). It can provide a waterproof function against water intrusion. In this waterproof function, when water enters from the direction indicated by the arrow (a), the water intrusion pressure acts on the outer surface of the seal piece 27 and strengthens the contact force between the seal piece 27 and the body member 30. . As a result, (a) water intrusion from the direction indicated by the arrow is blocked by the seal piece 27, and waterproofness as the hole plug 10 is ensured.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-81428
[Problems to be solved by the invention]
In vehicles such as automobiles, not only the waterproof function from the outside to the inside is required, but also the waterproof function from the inside to the outside may be required depending on the position where the hole is drilled. It may require a waterproof function. However, as shown in FIG. 5, when water enters from the inner surface side of the lower body member 30 to the upper outer surface side as shown in FIG. The pressure acts on the inner surface of the seal piece 27 and acts in a direction that weakens the contact force between the seal piece 27 and the body member 30. As a result, there is a problem that water can easily pass through the seal piece 27 and cannot perform a waterproof function.
[0006]
The present invention was devised to solve the above-described conventional problems, and the problem to be solved by the present invention is to prevent water from entering from both inside and outside of a body member to which a hole plug is attached. Is to make use of the pressure in the direction of water penetration.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention takes the following means.
First, the hole plug according to the first invention takes the following means. That is, in order to close the hole drilled in the body member, in a hole plug having a waterproof function that is fitted in and attached to the hole, the fitting that is fitted and attached to the hole drilled in the body member And a closed portion that is integrally attached to one end of the fitting portion and has an area shape capable of closing the hole, and the closed portion is located outside the hole with respect to the hole. The seal member is provided with an endless shape that performs a waterproof function by receiving the pressure of the flow in both directions to enter and exit.
According to the first aspect of the present invention, the endless seal member provided at the closed portion of the hole plug is subjected to the pressure of the flow with respect to the flow in both directions about to enter and exit from the hole formed in the body member. In response to the waterproof function. That is, when the seal member receives the pressure of the flow in both directions, the contact adhesion force between the seal member and the body member is strengthened, and the seal function is strengthened. For this reason, the invasion of water from both the inside and outside of the body member to which the hole plug is attached can be effectively prevented.
[0008]
Next, the hole plug according to the second invention takes the following means. That is, in the above-described hole plug of the first invention, the seal member is composed of double concentric seal pieces, and one piece is disposed in contact with the body member toward the outside. The other piece is arranged so as to be in contact with the inside.
According to the second aspect of the invention, the one piece of the sealing piece constituting the sealing member prevents water from entering from the one side to the other side of the body member having the hole, and the other piece of the sealing piece is reversed. In addition, entry of water from the other side of the body member to the one side is prevented. As a result, it is possible to effectively prevent water from entering from both inside and outside of the body member to which the hole plug is attached by the double seal piece.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the hole plug according to the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view, and FIG. 2 is a cross-sectional view showing an attached state. In the present embodiment, parts corresponding to the parts of the conventional structure shown in FIG. 4 are denoted by the same reference numerals.
As shown in FIGS. 1 and 2, the body member 30 is formed of a plate-like member, and a through hole 32 is formed. In this embodiment, the hole 32 is formed as a round hole. The body member 30 constitutes an outer plate of an automobile, for example, and a hole 32 formed in the outer plate serves as a hole for distributing paint during painting or a work hole for assembling parts. It is used as These holes 32 are necessary when manufacturing and assembling the automobile, and are unnecessary because they do not perform any function when the automobile is used after the assembly is completed. For this reason, in a state where the function of the hole 32 becomes unnecessary, the hole plug 10 is attached to the hole 32 and closed. The hole plug 10 is closed with a waterproof function so as to block the flow of water in both the inside and outside of the body member 30.
[0010]
The hole plug 10 includes a fitting part 20 and a blocking part 25. As shown in FIG. 2, a blocking portion 25 is attached to the upper end of the fitting portion 20. The fitting part 20 and the blocking part 25 are integrally formed by integral molding and are made of a rigid synthetic resin. The fitting part 20 is a cylindrical part that is fitted and attached to a hole 32 formed in the body member 30. As shown in the drawing, an engaging claw 21 is formed at the lower end of the fitting part 20. ing. The engaging claws 21 may be provided over the entire circumference of the cylindrical circumference, but in this embodiment, they are provided at four locations on the circumference at intervals of 90 degrees.
As shown in FIG. 1, slits 26 are formed on both sides of the portion where the engaging claw 21 is formed, and the engaging claw 21 is provided with a spring action so that it can be bent in the radial direction independently. Has been. Specifically, the engaging claw 21 is given a radially outward spring action, and is engaged with the lower edge of the hole 32 of the body member 30 by this spring action, as shown in FIG. Thus, the fitting part 20 is prevented from coming off upward.
[0011]
The closing portion 25 is a portion for closing the hole 32 formed in the body member 30 and is formed in a disk shape larger than the area shape of the hole 32. As shown in the figure, a protrusion 40 is provided at the center and a seal member 11 is provided at the outer peripheral position on the lower surface of the closed portion 25. The upper end of the fitting part 20 is integrally attached to an intermediate position between the both 40 and 11. The protrusion 40 is provided because of the need to resin-mold the closed portion 25. Note that the length of the protrusion 40 is shorter than the length of the fitting portion 20.
[0012]
The seal member 11 is composed of double seal pieces 11a and 11b arranged in an endless annular shape. The seal piece 11a is disposed at the outer peripheral position, and the seal piece 11b is disposed at the inner peripheral position. The seal pieces 11a and 11b are integrated at a root portion attached to the closed site 25, and are fixed to the closed site 25 by appropriate fixing means such as adhesion.
The seal piece 11a disposed at the outer peripheral position is disposed in a state of being inclined radially outward and downward toward the body member 30, and disposed on the surface of the body member 30 in an appropriate pressure contact state. Yes. On the other hand, the seal piece 11b disposed at the inner peripheral position is disposed in a state inclined inward in the radial direction and downward toward the body member 30, and is appropriately pressed against the surface of the body member 30. It is arranged in a state. That is, the seal pieces 11a and 11b are arranged in the opposite direction.
The seal pieces 11a and 11b constituting the seal member 11 are formed of a material that can have a seal function. For example, it is formed of a rubber material or a resin material such as an elastomer.
[0013]
Next, the sealing function of the hole plug 10 of the present embodiment having the above-described configuration will be described with reference to FIG.
FIG. 3 is an enlarged view of the left half of the sectional view showing the mounting state of the hole plug 10 shown in FIG. 2 described above. First, water intrusion from the outer surface side of the upper body member 30 shown in the figure to the lower inner surface side, that is, water intrusion from the direction indicated by the arrow (a), was arranged at the outer peripheral position as the seal member 11. It is sealed by the seal piece 11a to perform waterproofing. (A) When water is going to enter from the direction indicated by the arrow (a), the water intrusion pressure acts on the outer surface of the seal piece 11a, and the pressure contact adhesion force that the seal piece 11a and the body member 30 come into contact with each other. ramp up. As a result, (a) water intrusion from the direction indicated by the arrow is blocked by the seal piece 11a, and waterproofness as the hole plug 10 is ensured.
[0014]
Next, for the intrusion of water from the inner surface side of the lower body member 30 shown in the figure, which is the intrusion of water from the opposite direction, that is, the intrusion of water from the direction indicated by the arrow (b), The seal member 11 is sealed by a seal piece 11b disposed at an inner peripheral position, and a waterproof action is performed. (B) When water is about to enter from the direction indicated by the arrow (b), the infiltration pressure of the water acts on the outer surface of the seal piece 11b, and the pressure contact adhesion force that the seal piece 11b and the body member 30 come into contact with each other. ramp up. As a result, the intrusion of water from the direction indicated by the arrow (b) is prevented by the seal piece 11b, and the waterproofness as the hole plug 10 is ensured.
That is, according to the hole plug 10 of the present embodiment, it has a waterproof function against water intrusion from both inside and outside of the body member 30 in the directions of arrows (a) and (b).
[0015]
Also in the present embodiment, as in the conventional case, the engagement claw 21 of the fitting portion 20 is engaged with the hole 32 so as to be prevented from coming off, and thus is generated between the seal pieces 11 a and 11 b and the surface of the body member 30. The sealing function is also performed by the contact adhesion force. Therefore, in detail, the waterproof function by the seal member 11 is performed by combining both the seal functions.
Although the embodiments of the present invention have been described above, the present invention can be implemented in various forms in addition to the above-described embodiments.
For example, in the above-described embodiment, the case where the hole 32 formed in the body member 30 is a round hole has been described. However, the hole 32 may be rectangular. Similarly, the seal pieces 11a and 11b constituting the seal member 11 have been described as being annular, but can be appropriately formed in a shape corresponding to the hole 32. However, in any case, it is necessary to form an endless shape.
[0016]
【The invention's effect】
The present invention can obtain the following effects by taking the above-described means.
First, according to the first aspect of the invention, the hole plug sealing member fitted and attached in the hole formed in the body member can prevent water from entering through the hole from both the inside and outside of the body member. Therefore, the waterproof function in both directions can be effectively achieved by this seal member.
Next, according to the second invention, the seal member is composed of double seal pieces, and one piece of the seal member can prevent water from entering from one side of the body member to the other, and On the contrary, the other piece of the sealing member can reliably prevent water from entering the other side of the body member. As a result, it is possible to effectively achieve a waterproof function for preventing water from entering from both directions by the double seal pieces.
In addition, when the hole plug according to the present invention is attached to the body member, water leakage does not occur even if it is fitted from the outside or the inside of the vehicle. There is also an effect of improving.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a hole plug according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view showing a mounting state of the hole plug of the present embodiment.
FIG. 3 is an enlarged cross-sectional view for explaining a waterproof function of the hole plug of the present embodiment.
FIG. 4 is a cross-sectional view of a conventional hole plug.
FIG. 5 is an enlarged cross-sectional view for explaining a waterproof function state of a conventional hole plug.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Hole plug 11 Sealing member 11a, 11b Sealing piece 20 Fitting part 21 Engaging claw 25 Closure part 26 Slit 30 Body member 32 Hole

Claims (2)

A hole plug having a waterproof function to be fitted in and attached to the hole in order to close the hole formed in the body member,
It comprises a fitting part that is fitted and attached to a hole formed in the body member, and a blocking part that has an area shape capable of closing the hole and is integrally attached to one end of the fitting part. The sealing part is endlessly provided with a sealing member that performs a waterproof function by receiving the pressure of the flow with respect to the flow in both directions to enter and exit the hole at a position outward from the hole. Hole plug characterized by. The hole plug according to claim 1,
The seal member is composed of a double concentric seal piece, and one piece is in contact with the body member toward the outside, and the other piece is in contact toward the inside. A hole plug characterized by being arranged.

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