JPH0682467U - Block plug - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an obstruction plug that can be mounted accurately and quickly with one pressing operation and has excellent workability. [Structure] A bottom portion 1, an outer peripheral wall 2 standing up from the peripheral side of the bottom portion 1, a flange portion 3 extending in a radial direction at an upper edge of the outer peripheral wall 2, and an outer wall surface of the outer peripheral wall 2. An engaging groove 4 that is fitted to the peripheral edge of the panel hole, a pressing portion 5 that is raised above the inner surface of the bottom portion 1, the outer peripheral wall 2, the bottom portion 1, and the pressing portion 5. And a tubular groove 6 formed between and, the upper surface of the pressing portion 5 is located above the upper surface of the collar portion 3. Further, the pressing portion 5 may be solid or may have a bowl shape in which the lower end opening is closed at the upper end, and the wall thickness of the pressing portion 5 is 1.5 times or more the wall thickness of the outer peripheral wall 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a blocking plug (grommet), and is used, for example, to close a drainage hole, a working hole, etc. provided in a floor surface of an automobile, an engine room, a trunk room or the like.

[0002]

[Prior art]

 Conventionally, an obstruction plug is a drain hole in the trunk of an automobile, a work hole provided in the floor surface of the body of an automobile, etc. (for example, to release the paint remaining in the vehicle body during painting to the outside). Widely used to close holes). This block plug includes a small-diameter plug (FIG. 6) with a fitting diameter of about 10 mmφ with the panel drilling hole (such as the water draining hole) 7c, and a larger or larger fitting diameter. Some have caliber. In the latter closure plug, for example, as shown in FIG. 7, a bottom portion 1d, an outer peripheral wall 2d raised from the periphery thereof, and a collar portion 3d extending from the upper edge of the outer peripheral wall 2d. It is known that an engaging groove 4d provided outside the outer peripheral wall 2d and fitted into the panel drilling hole 7d and a hollow pressing portion 5d raised above the inner surface of the bottom portion 1d are known. Has been. Further, as shown in FIG. 8, a plug having substantially the same structure as the plug D and selecting a soft material as its material (Japanese Utility Model Laid-Open No. 53-2821) or an improved product of the plug D is shown in FIG. A closure plug E (Japanese Utility Model Laid-Open No. 56-170362) in which a pressing surface portion 51e inclined to the engaging groove (surface) 4e is provided in the pressing portion 5e is also proposed.

[0003]

[Problems to be solved by the device]

 However, in the case of the small-diameter obstruction plug C, generally, the obstruction plug C is sufficiently deformed in the radial direction (x direction) only by pressing by the operator's hand (that is, the outer peripheral wall 2c, the engaging groove 4c, etc.). It is difficult to expand and contract according to the diameter of the panel perforation hole 7c) and to accurately press the central portion of the obstruction plug C. Therefore, usually, a predetermined jig G is used for the mounting work. The reality is that On the other hand, the medium-diameter and large-diameter obstruction plugs D shown above are more easily deformed in the radial direction (x direction) than the small-diameter obstruction plugs C and are mounted without using the jig G or the like. However, it is difficult to accurately press the pressing portion downward (y direction) and to transmit this pressing force uniformly in the radial direction of the blocking plug D with this type of blocking plug D. Is. Especially, when the pressing portion 5d is hollow like the blocking plug D, this is all the more apparent. Therefore, as a reaction force of this pressing force, the force applied to the closure plug D from the peripheral edge 71d of the panel drilling hole 7d is likely to be biased, and the closure plug D cannot be uniformly expanded and contracted in the radial direction. is there. For this reason, in this type of blocking plug D and the like, as shown in FIGS.

Further, the closure plug is easier to be deformed in the radial direction than the closure plug D and can be mounted by pressing once, but the material is limited to a soft material. Also, in this case as well, accurate pressing of the pressing portion downward is indispensable. Further, in the above-mentioned plug E, the engagement groove 4e of the flange 3e is sequentially engaged along the hole 7e with a slight pressing force by the action of the inclined pressing surface 51e. The mounting work cannot be completed by pressing once.

Further, for the purpose of facilitating the mounting work, the obstruction plugs shown in (1) and (2) are made of a soft resin material or the like, or the pressing portion 5d or the like is made thin to make the obstruction plugs D or the like rigid. If the size is reduced, as shown in FIGS. 10 (a) to 10 (c), it may fall out from the panel hole 7d when pressed, or may drop due to slight vibration or shock during use. It can happen. Further, in this respect, the same applies to the obstruction plug described above. As described above, the fact is that no plugging plug that can be accurately and quickly mounted and has excellent workability by pressing once regardless of the fitting diameter and material of the panel drilling hole and excellent workability has not yet been proposed. Is.

The present invention has been made in view of the above viewpoints, and an object of the present invention is to provide an obstruction plug which can be mounted accurately and quickly by one pressing and which is excellent in workability.

[0007]

[Means for Solving the Problems]

 An obstruction plug according to the first aspect of the present invention comprises a bottom portion, an outer peripheral wall raised from a peripheral side of the bottom portion, a flange portion radially extending at an upper edge of the outer peripheral wall, and an outer wall surface of the outer peripheral wall. Is formed between the outer peripheral portion, the bottom portion and the pressing portion, the engaging groove provided on the peripheral portion of the panel drilling hole, the pressing portion raised above the inner surface of the bottom portion, And a tubular groove formed therein, wherein the upper surface of the pressing portion is located above the upper surface of the collar portion. Further, as shown in the second aspect of the present invention, the pressing portion may be solid. Further, as shown in the third aspect of the present invention, the pressing portion may have a bowl shape with a lower end opening and an upper end closing, and the thickness of the pressing portion may be 1.5 times or more the thickness of the outer peripheral wall.

[0008]

[Action]

 In the closure plug of the present invention, the upper surface of the pressing portion is located above the upper surface of the collar portion. As a result, the upper surface of the pressing portion is located at substantially the same position as the upper surface of the flange portion, or the upper surface of the pressing portion is located at the center (pressing portion ) Is very easy to press. Therefore, it is possible to accurately press only the central portion (pressing portion) of the closure plug by the operator's hand without using a predetermined jig or the like. The pressing force thus applied is evenly transmitted in the radial direction of the plug, and this force is subsequently applied to the peripheral edge of the panel hole. On the other hand, a uniform reaction force is applied in the radial direction from the panel hole to the part of the plug that is in contact with the hole, and the plug expands and contracts in the radial direction in a uniform manner.

Then, the block plug portion smoothly passes through the panel perforation hole, and the subsequent block plug portions also sequentially contact with the hole, expand and contract in the radial direction, and pass through the hole. The mounting is completed when the engagement groove formed on the outer peripheral wall of the plug is fitted to the peripheral edge of the panel hole. In this way, the present closure plug is smoothly inserted into the panel hole, and the mounting work can be completed by a single pressing work. Also, since the pressing force applied by the operator's hand can be concentrated only in the central part of the plug, that is, the pressing part, it is possible to use a small diameter or because it is made of a hard material. Even a plug that is difficult to deform in the radial direction can be attached without using a jig.

In addition, in the obstruction plug of the second invention in which the pressing portion is solid and the obstruction plug of the third invention in which the pressing portion has a predetermined wall thickness, even if a soft material is used as the material, sufficient rigidity is obtained. Therefore, the blocking plug does not fall out from the panel hole when pressed, and does not drop due to slight vibration or shock during use.

[0011]

【Example】

 Hereinafter, the present invention will be described in detail with reference to examples. (1) Example 1 An obstruction plug A of this example is made of EPDM integrally molded using a predetermined molding die, and as shown in FIGS. 1 and 2, a bottom portion 1, an outer peripheral wall 2, and a collar. It is composed of a portion 3, an engaging groove 4, a pressing portion 5, and a tubular groove 6. The bottom part 1 has a disk shape (9 to 11 mmφ, thickness: 1 to 2 mm), and the outer peripheral wall (height: 5 to 6 mm) 2 is raised from the periphery of the bottom part 1 to the upper side. ing. An inclined portion 21 is provided below the outer peripheral wall 2, the diameter of the inclined portion 21 increases toward the upper side, and the diameter of the upper end portion is 15 mm. Further, a ring-shaped (outer shape: 20 mmφ, inner shape: 10 mmφ, thickness: 1 mm) flange portion 3 extends from the upper edge of the outer peripheral wall (height: 5 to 6 mm) 2 toward the outside of the plug A. It is set up.

Further, on the outer wall surface 21 of the outer peripheral wall 2, at a portion corresponding to the root of the collar portion 3, the engaging groove (width: 1-2 mm, depth: 0.5- 0.8 mm) 4 is provided around. Further, from the inner surface of the bottom portion 1, a solid columnar (7 mmφ × 8 mm) pressing portion 5 is erected upward. Therefore, in the main plug A, the upper surface 51 of the pressing portion 5 is located 1.5 mm above the upper surface 31 of the collar portion 3. However, this numerical value is not particularly limited as long as the upper surface 51 of the pressing portion 5 is located above the upper surface 31 of the collar portion 3 and the object of the present invention can be achieved. Further, a portion surrounded by the bottom portion 1, the outer peripheral wall 2 and the pressing portion 5 constitutes the tubular groove (width: 1.2 mm, depth: 5 mm) 6.

The blocking plug A configured as described above was attached to the panel drilling hole (10 mmφ) 7 as follows. First, the blocking plug A was placed on the panel hole 7 from the bottom portion 1 side, and then the upper surface 51 of the pressing portion 5 was pressed downward with a finger as shown in FIG. 3 (a). At this time, the portion of the inclined portion 21 that abuts the panel drilling hole 7 is pushed by the peripheral edge portion 71 of the hole 7, passes through the hole 7 while uniformly contracting in the radial direction, and the subsequent portion ( The portion of the inclined portion 21 located above the panel hole 7) also passed through the hole 7 in the same manner. In this way, the original shape of the portion passing through the panel perforation hole 7 was sequentially restored by its elastic force. Then, as shown in FIGS. 3B and 4, the engagement groove 4 reached the panel drilling hole 7 and the mounting was completed.

As described above, the obstruction plug A of this embodiment was able to be quickly and accurately attached by a single pressing operation of the operator's hand. This is because the upper surface 51 of the pressing portion 5 is located above the upper surface 31 of the collar portion 3, so that it can be pressed accurately by the operator's hand, and the applied pressing force is applied to the closure plug A. This is because the reaction force is transmitted in a uniform state in the radial direction, and this reaction force is applied in a uniform state in the radial direction of the same closure plug A, and it is expanded and contracted uniformly in the same direction.

(2) Example 2 An obstruction plug B according to this example is as shown in FIG. 5, and is the same as the obstruction plug A of Example 1 except for the following points. That is, in the closure plug B of this embodiment, the pressing portion 5b has a bowl shape with the lower end opening and the upper end opening. The wall thickness of the pressing portion 5b is 1.5 to 2 times the wall thickness of the inclined portion 21b of the outer peripheral wall 2b. Even with the obstruction plug B of this example, the mounting could be completed by pressing once. Further, the pressing portion 5b has a bowl shape (that is, a hollow portion is provided) to facilitate the expansion and contraction in the radial direction. However, the pressing portion has a predetermined wall thickness and Since it has sufficient rigidity, it did not fall out of the panel hole when pressed. Furthermore, in the present closure plug B, the weight can be reduced by providing the hollow portion.

It should be noted that the present invention is not limited to the specific examples described above, and various modifications may be made within the scope of the present invention depending on the purpose and application. That is, in the present embodiment, the closure plug having a fitting diameter with the panel drilling hole of 10 mmφ or more and having a medium bore or more is described, but the same effect can be exerted even with a small bore plug. The material of the plug is not particularly limited, and resin, thermoplastic elastomer or the like can be used. The overall shape and size of the obstruction plug are not particularly limited as long as the object of the present invention can be achieved.

[0017]

[Effect of device]

 With the closure plug of the present invention, the center part of the closure plug can be accurately pressed without using a predetermined jig, so that the closure plug can be expanded and contracted in an averaged state in the radial direction. Thus, the mounting work can be completed quickly and accurately. In addition, since the pressing force applied by the operator's hand can be concentrated only on the central part of the obstruction plug, it is not deformed in the radial direction due to its small diameter or being made of a hard material. Even difficult plugs can be attached without using a jig.

[Brief description of drawings]

FIG. 1 is a perspective view showing an obstruction plug according to a first embodiment.

FIG. 2 is a vertical sectional view of the obstruction plug according to the first embodiment.

FIG. 3 is an explanatory diagram showing a process of mounting the blocking plug according to the first embodiment.

FIG. 4 is an explanatory view showing a state in which the blocking plug of the first embodiment is attached.

FIG. 5 is a vertical cross-sectional view of an obstruction plug according to a second embodiment.

FIG. 6 is a vertical cross-sectional view showing a state in which a conventional closure plug is attached.

FIG. 7 is an explanatory view showing a state in which a conventional closure plug is attached.

FIG. 8 is a vertical cross-sectional view showing a state in which a conventional closure plug is attached.

FIG. 9 is an explanatory diagram showing a process of mounting a conventional closure plug.

FIG. 10 is an explanatory view showing a process of mounting a conventional closure plug.

[Explanation of symbols]

1; bottom part, 2; outer peripheral wall, 3; flange part, 4; engaging groove, 5; pressing part, 6; tubular groove, 7; panel drilling hole.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Zenichi Yamabata 1-16-30, Sennen, Atsuta-ku, Nagoya-shi Inoac Corporation Hirakata Business Office

Claims (3)

[Scope of utility model registration request] 1. A bottom portion, an outer peripheral wall raised from a peripheral side of the bottom portion, a flange portion radially extending at an upper edge of the outer peripheral wall, and a panel provided on an outer wall surface of the outer peripheral wall. An engagement groove fitted to the peripheral edge of the drilled hole, a pressing portion raised above the inner surface of the bottom portion, and a tubular groove formed between the outer peripheral wall, the bottom portion and the pressing portion. And the upper surface of the pressing portion is located above the upper surface of the collar portion. 2. The plug according to claim 1, wherein the pressing portion is solid. 3. The pressing portion has a bowl shape with a lower end opening and an upper end closing, and the thickness of the pressing portion is 1.
The obstruction plug according to claim 1, which is 5 times or more.