JP2012241777A - Hole plug - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hole plug that can enlarge the range accepting different hole diameters, and integrating parts.SOLUTION: The hole plug 10 is used for closing a hole and includes a head part 20 having a greater diameter than the hole opened in a member to which the hole plug 10 is to be attached, and a leg part 30 provided to protrude substantially from the center of the head part 20. The leg part 30 is configured from a center part 31 which is coaxial with the head part 20 and wing parts 32 which are extended from the center part 31 to be curved in the radial direction. The wing parts 32 are each configured from an inner peripheral wall part 33 which are located on the side facing the center part 31, an outer peripheral wall part 34 which is located on the opposite side of the inner peripheral wall part 33, and a front end wall part 35 which interconnects the inner peripheral wall part 33 and the outer peripheral wall part 34. The front end wall part 35 is configured from a claw part 37 which engages with the edge of the hole and a sloped part 38 which is tapered toward the front end of the leg part 30 from the claw part 37.

Description

  The present invention relates to a hole plug that closes a hole opened in an automobile panel or the like.

  2. Description of the Related Art Conventionally, work holes and paint punch holes that are opened in automobile panels and the like have different hole diameters and plate thicknesses depending on where they are opened. For this reason, the type of the hole plug that closes the work hole and the paint hole is raised in accordance with the diameter of each hole. Therefore, different hole plugs exist for each hole diameter. In view of this, a blocking plug as shown in Patent Document 1 below has been proposed.

  The obturator plug is provided on the bottom, the outer peripheral wall raised from the periphery of the bottom, the flange extending radially at the upper edge of the outer peripheral wall, and the panel provided on the outer wall surface of the outer peripheral wall. An engagement groove that fits in the periphery of the drilling hole, a pressing portion raised above the inner surface of the bottom, and a tubular groove formed between the outer peripheral wall, the bottom, and the pressing portion And the upper surface of the pressing portion is positioned above the upper surface of the flange portion.

  The above-described closing plug has an effect that the outer peripheral wall bends inward by pressing the pressing portion, and that it becomes easy to bend by providing the tubular groove, and the mounting operation to the hole is completed with one press.

Japanese Utility Model Publication No. 6-82467

However, the above closure plug has the following problems.
When this plug is inserted into the opened hole, the space in which the engagement groove bends, that is, there is almost no deflection, and the engagement groove is bent and reduced in diameter by utilizing the elasticity of the material. It was press-fitted into. For this reason, the range which accept | permits a different hole diameter is narrow, for example, has stayed in the range of about ± 0.3 mm. Also, the difference in insertion force and extraction force between the maximum and minimum hole diameters was large.

  The present invention has been proposed in view of the above circumstances. That is, an object of the present invention is to provide a hole plug capable of expanding a range in which different hole diameters are allowed by widening a bending margin and integrating components.

  In order to achieve the above object, the present invention comprises a head having a diameter larger than a hole opened in a member to be attached, and a leg provided so as to protrude from a substantially center of the head. A hole plug for closing an opening, wherein the leg portion is formed of a central portion that is coaxial with the head portion, and a plurality of wing portions that are extended in a radial direction from the central portion, The wing portion includes an inner peripheral wall portion facing the center portion, an outer peripheral wall portion opposite to the inner peripheral wall portion, and a tip wall portion connecting the inner peripheral wall portion and the outer peripheral wall portion. The tip wall portion is formed from a claw portion that engages with an edge of the hole, and an inclined portion that is narrowed from the claw portion toward the tip of the leg portion.

  In addition, either the center portion or the wing portion is formed in a hollow shape.

  Further, the outer peripheral wall portion is formed so as to be gradually thinner toward the tip wall portion.

  Moreover, the said front-end | tip wall part is formed more thickly than the said outer peripheral wall part and the said inner peripheral wall part.

  Further, the inner peripheral wall portion extends from the central portion via a hinge portion, and the hinge portion is formed thinner than the outer peripheral wall portion, the inner peripheral wall portion, and the tip wall portion. It is a feature.

  The wings are provided at substantially equal intervals in the circumferential direction of the central part, and the inner peripheral wall part is formed so as to move away from the central part toward the tip wall part.

  In addition, the central portion is formed in a substantially S shape or a substantially polygonal shape according to the number of the wing portions.

In the hole plug according to the present invention, a hole for closing an opening including a head having a diameter larger than that of the hole opened in the attached member and a leg provided so as to protrude from substantially the center of the head. The plug includes a leg portion formed of a central portion that is coaxial with the head portion and a plurality of wing portions that are radially extended from the central portion, and the wing portions are opposed to the central portion. An inner peripheral wall portion on the side to be connected, an outer peripheral wall portion on the opposite side of the inner peripheral wall portion, and a tip wall portion connecting the inner peripheral wall portion and the outer peripheral wall portion, and the tip wall portion is formed with an edge of the hole. The engaging claw portion and an inclined portion narrowed from the claw portion toward the tip of the leg portion are used.
Therefore, it is possible to secure a margin for bending, secure a clearance of the claw portion, and expand a range in which hole diameters having different sizes are allowed. Specifically, a range of about ± 1 mm can be allowed. In addition, the difference between the insertion force and the removal force when the hole plug is inserted and removed between the maximum and minimum hole diameters can be reduced.

In particular, it is preferable that either one of the center part or the wing part is formed hollow.
With this configuration, it is possible to easily ensure the flexibility of the wing portion and the escape of the claw portion, and it is possible to expand a range in which hole diameters having different sizes are allowed. Further, the insertion force when inserting the hole plug can be reduced.

Moreover, it is preferable that the outer peripheral wall portion is formed so as to be gradually thinner toward the tip wall portion.
With this configuration, it is possible to reliably ensure the ease of bending of the wing portion.

Moreover, it is preferable that the front-end | tip wall part is formed more thickly than an outer peripheral wall part and an inner peripheral wall part.
With this configuration, it is possible to ensure the bending holding force while ensuring the ease of bending of the wing portion.

Moreover, it is preferable that an inner peripheral wall part is extended from the center part via a hinge part, and this hinge part is formed thinner than an outer peripheral wall part, an inner peripheral wall part, and a front-end | tip wall part.
With this configuration, it is possible to further improve the ease of bending of the wing portion.

Moreover, it is preferable that a wing | blade part is provided in the circumferential direction of a center part at substantially equal intervals, and is formed so that it may leave | separate from a center part as an inner peripheral wall part goes to a front-end | tip wall part.
With this configuration, it is possible to secure a wider bending margin of the wing portion.

Moreover, it is preferable that the center part is formed in a substantially S shape or a substantially polygonal shape according to the number of wing parts.
With this configuration, by increasing / decreasing the number of wing parts, it is possible to ensure or adjust the bending margin of the wing parts more widely.

It is a front view showing one embodiment of a hole plug concerning the present invention. It is a top view which shows one Embodiment of the hole plug which concerns on this invention. It is BB sectional drawing of FIG. 1, Comprising: It is sectional explanatory drawing explaining the leg part of one Embodiment of the hole plug which concerns on this invention. It is a bottom view which shows one Embodiment of the hole plug which concerns on this invention. It is AA sectional drawing of FIG.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, this embodiment illustrates and demonstrates one of embodiment of this invention. Therefore, the present invention is not limited to this embodiment.

  1 and 2, the hole plug 10 according to the present embodiment is formed of a head portion 20 and leg portions 30 provided so as to protrude from the approximate center of the head portion 20.

  For the hole plug 10, for example, a material such as thermoplastic elastomer (TPE) or polyethylene (PE) is used. In particular, it is preferable in terms of economy if PE that is cheaper than TPE is used.

  The head 20 is formed of a flat surface 21 formed in a substantially circular shape in plan view, and a collar 22 formed around the edge of the flat surface 21 and formed in a substantially annular shape. The heel 22 is inclined in the direction of the leg 30 rather than the flat surface 21 when viewed from the front. Note that the shape of the flange 22 is not limited to a substantially annular shape, and may be made to circulate along the edge of the flat surface 21 and be a polygonal shape together with the flat surface 21.

  The leg 30 is provided so as to protrude in the axial direction from the flat surface 21 of the head 20 (see FIG. 5). In FIG. 3, the leg portion 30 is formed of a central portion 31 that is coaxial with the flat surface 21, and three wing portions 32 that extend from the central portion 31 while being curved in the radial direction. Therefore, the shape of the leg 30 in plan view is spiral.

  The cross-sectional shape of the central portion 31 in plan view is formed in a substantially triangular shape in which the base portions of adjacent wing portions 32 are connected to each other.

  The wing portion 32 extends from the center portion 31 while being bent counterclockwise and has a tip extending along the edge of the flat surface 21 of the head 30 (see FIGS. 2 and 3). The spiral direction of the entire three wings 32 is not limited to the counterclockwise direction, and may be clockwise.

  The wing part 32 has an inner peripheral wall part 33 on the side facing the center part 31, an outer peripheral wall part 34 opposite to the inner peripheral wall part 33, and a tip where the inner peripheral wall part 33 and the outer peripheral wall part 34 are connected. The wall portion 35 is formed. The inner peripheral wall portion 33 extends from the central portion 31 via the hinge portion 36.

  The wing parts 32 are provided at substantially equal intervals in the circumferential direction of the center part 31. The wing part 32 is formed so as to move away from the center part 31 as the inner peripheral wall part 33 moves toward the tip wall part 35.

  That is, a gap serving as a bending margin 40 is formed between the inner peripheral wall portion 33 and the central portion 31. The bending margin 40 allows the wing portion 32 to bend toward the center portion 31. The bending margin 40 is formed so as to gradually spread with the hinge portion 36 as a base point. Therefore, since the bending margin 40 can be widened in the vicinity of the tip wall portion 35, the wing portion 32 can be greatly bent.

  The center part 31 and the wing part 32 are both formed hollow. That is, a closed path is formed by the entire leg portion 30 including the three sets of the inner peripheral wall portion 33, the outer peripheral wall portion 34, the tip wall portion 35, and the hinge portion 36, and the central portion 31.

  The inner peripheral wall portion 33 is a side wall on the side facing the central portion 31 among the side walls forming the wing portion 32. One end of the inner peripheral wall portion 33 is connected to one end of the outer peripheral wall portion 34. Thereby, the tip wall part 35 is formed. The other end of the inner peripheral wall portion 33 is connected to the hinge portion 36.

  The hinge portion 36 is formed to be bent in a substantially U shape in plan view. One end of the hinge portion 36 is connected to the other end of the outer peripheral wall portion 35 of the other wing portion 32 adjacent to the counterclockwise side. The other end of the hinge portion 36 is connected to the other end of the inner peripheral wall portion 33. The hinge part 36 becomes a fulcrum when the wing part 33 is bent.

  The hinge portion 36 is formed thinner than any portion of the inner peripheral wall portion 33, the outer peripheral wall portion 34, and the tip wall portion 35. Since the hinge part 36 is thin, the easiness of bending of the wing | blade part 32 can further be improved. Further, even if the insertion force is increased by using polyethylene (PE) as a material, the increased insertion force can be reduced by making the hinge portion 36 thinner and taking the bending margin 40 wide as described above. it can.

  The outer peripheral wall portion 34 on the opposite side of the inner peripheral wall portion 33 is a side wall on the opposite side of the central portion 31 across the inner peripheral wall portion 33 among the side walls forming the wing portion 32. The outer peripheral wall portion 34 is formed in an arc shape, and one end thereof is connected to one end of the inner peripheral wall portion 33. Thereby, the tip wall part 35 is formed. The other end of the outer peripheral wall portion 34 is connected to a hinge portion 36 of another wing portion 32 adjacent to the clockwise side.

  The outer peripheral wall 34 is gradually formed thinner toward the tip wall 35. Therefore, the ease of bending of the wing portion 32 can be ensured.

  The tip wall portion 35 is formed thicker than the outer peripheral wall portion 34 and the inner peripheral wall portion 33. Therefore, it is possible to secure the bending holding force while securing the ease of bending of the wing portion 32.

  In FIG. 5, a claw portion 37 is formed on the tip wall portion 35. The claw portion 37 is formed by providing a notch in a part near the head 20 at the edge of the tip wall portion 35. A groove is formed in the tip wall portion 35 by the notch, and a claw portion 37 is formed by the end of the groove. The notch is formed at substantially the same height as the edge of the flange 22 in the axial direction.

  The tip wall portion 35 is formed with an inclined portion 38 formed by constricting from the claw portion 37 toward the tip of the leg portion 30.

  The hole plug 10 according to the present embodiment is configured as described above.

  Next, the operation of the hole plug 10 according to this embodiment will be described.

  3, 4, and 5, the hole plug 10 is inserted from the leg portion 30 side into a work hole or a paint hole that is opened in an automobile panel or the like (not shown). The diameter of the tip which is the minimum diameter of the leg 30 is formed smaller than the diameter of the hole. The diameter where the claw part 37 which is the maximum diameter of the leg part 30 is located is formed larger than the diameter of the hole. Therefore, the leg part 30 can be inserted into the hole from the tip, and a part of the inclined part 38 formed on the tip wall part 35 of the wing part 32 constituting the leg part 30 is caught on the edge of the hole.

  Here, although a hole diameter and plate | board thickness change with locations where it opens, in this embodiment, the leg part 30 is formed in the spiral shape from the center part 31 to radial direction. Therefore, the bending margin 40 can be taken between the wing part 32 and the center part 31, and the clearance of the claw part 37 can be secured, and even hole diameters having different sizes can be allowed. Specifically, a range of about ± 1 mm can be allowed.

  Since a part of the inclined portion 38 is caught on the edge of the hole, the leg 30 presses the flat surface 21 of the head 20, and pressure acts in the radial direction of the leg 30. When the pressure acts in the radial direction of the leg portion 30, a repulsive force acts from the edge of the hole. When the repulsive force is applied, the inner peripheral wall portion 33 of the wing portion 32 formed of a flexible material approaches the center portion 31 with the hinge portion 36 as a fulcrum. That is, the wing part 32 bends toward the center part 31. When the wing 32 is bent, the diameter of the leg 30 is reduced.

  In particular, in this embodiment, the wing | blade part 32 and the center part 31 are formed in the hollow. Further, the outer peripheral wall portion 34 is gradually formed thinner toward the tip wall portion 35. Further, the tip wall portion 35 is formed thicker than the outer peripheral wall portion 34 and the inner peripheral wall portion 33. In addition, the inner peripheral wall portion 33 extends from the center portion 31 via a thin hinge portion 36. The wing portions 32 are provided at substantially equal intervals in the circumferential direction of the center portion 31, and are formed so as to be separated from the center portion 31 as the inner peripheral wall portion 33 moves toward the tip wall portion 35.

  By configuring in this way, it is possible to improve the ease of bending of the wing portion 32 while securing the holding force of the bending, and it is possible to widen the bending margin 40. Therefore, since the diameter of the leg part 32 can be expanded and contracted easily and greatly, a range in which different hole diameters are allowed can be expanded.

  When the diameter of the leg portion 30 is reduced, the hole plug 10 pressed against the flat surface 21 is inserted deeply in the pressed direction, that is, from the opening surface to the hole. When the hole plug 10 is inserted into the hole while the diameter of the leg 30 is reduced, the tip of the flange 22 that forms the head 20 having a diameter larger than the hole comes into contact with the opening surface. Here, since the reed 22 is formed of a flexible material, the reed force from the opening surface causes the reed 22 to bend and bend with an inclination angle so as to approach the horizontal.

  As described above, since the head 20 is formed with the bending margin by the flange 22, plate thicknesses having different thicknesses can be allowed.

  When the hole plug 10 is inserted into the hole while bending the flange 22, the claw portion 37 formed on the tip wall portion 35 of the wing portion 32 engages with the edge of the hole. When the claw portion 37 is engaged with the edge of the hole, the leg portion 30 whose diameter is reduced tends to return to the original diameter due to the flexibility of the material. Similarly, the flange 22 is pushed from the opening surface and tries to return to the original inclination angle. Therefore, a repulsive force is generated in the radial direction and the axial direction, and the hole plug 10 is reliably engaged with the edge of the hole.

As described above, in the hole plug 10 according to the present embodiment, the leg portion 30 includes the central portion 31 that is coaxial with the head portion 20, and a plurality of wings that are radially extended from the central portion 31. The wing portion 32 is formed of a portion 32, and the wing portion 32 has an inner peripheral wall portion 33 on the side facing the center portion 31, an outer peripheral wall portion 34 on the opposite side of the inner peripheral wall portion 33, an inner peripheral wall portion 33, and an outer peripheral wall portion 34. And the tip wall portion 35 includes a claw portion 37 that engages with the edge of the hole, and an inclined portion that is narrowed from the claw portion 37 toward the tip of the leg portion 30. 38.
With this configuration, it is possible to take the bending margin 40 by the wing portion 32, secure the escape of the claw portion 37, and expand the range in which the hole diameters having different sizes are allowed. Specifically, a difference of about ± 1 mm can be allowed. Further, the difference between the insertion force and the extraction force when the hole plug 10 is inserted and withdrawn between the maximum and minimum hole diameters can be reduced.

  In particular, in the present embodiment, either the center portion 31 or the wing portion 32 is formed hollow. With this configuration, it is possible to easily ensure the flexibility of the wing portion 32 and the escape of the claw portion 37, and it is possible to expand a range in which hole diameters having different sizes are allowed. Further, the insertion force when the hole plug 10 is inserted can be reduced.

  In particular, in the present embodiment, the outer peripheral wall portion 34 is gradually formed thinner toward the tip wall portion 35. With this configuration, the ease of bending of the wing portion 32 can be ensured.

  In particular, in the present embodiment, the tip wall portion 35 is formed thicker than the outer peripheral wall portion 34 and the inner peripheral wall portion 33. With this configuration, it is possible to ensure the bending retention force while ensuring the ease of bending of the wing portion 32.

  In particular, in the present embodiment, the inner peripheral wall portion 33 extends from the center portion 31 via the hinge portion 36, and the hinge portion 36 is thinner than the outer peripheral wall portion 34, the inner peripheral wall portion 33, and the tip wall portion 35. Is formed. With this configuration, the ease of bending of the wing portion 32 can be further improved.

  In particular, in the present embodiment, the wing portions 32 are provided at substantially equal intervals in the circumferential direction of the center portion 31, and are formed so as to be separated from the center portion 31 as the inner peripheral wall portion 33 moves toward the tip wall portion 35. With this configuration, the bending margin 40 of the wing portion 32 can be secured more widely.

  In particular, in this embodiment, the center part 31 is formed in a substantially S shape or a substantially polygonal shape according to the number of the wing parts 32. With this configuration, by increasing or decreasing the number of the wing parts 32, it is possible to ensure or adjust the bending margin 40 of the wing parts 32 more widely.

  According to the above-described embodiment, the center portion 31 and the wing portion 32 are both formed hollow. However, one of the center part and the wing part may be hollow and the other may be solid. Even if only one of them is hollow, escape of the claw portion can be secured, and hole diameters having different sizes can be allowed. In addition, the insertion force into the hole can be reduced. However, as in the above-described embodiment, it is preferable that both the center portion 31 and the wing portion 32 are hollow. This is because it is possible to ensure the relief of the claw portion and to expand the range that allows different hole diameters. Moreover, it is because the insertion force to a hole can further be reduced.

  If the wing portion is hollow, the wing portion itself can be bent when the inner peripheral wall portion and the outer peripheral wall portion are close to each other when the wing portion is bent, so that a wider bending margin can be obtained.

  According to the above-described embodiment, since the number of the wing parts 32 is three, the cross-sectional view of the center part 31 is substantially triangular. However, the number of wings is not limited to three, and may be a simple configuration of two or four or more configurations. With two configurations, the material is reduced and the cost is economical. If it is set as four or more structures, each wing | blade part will bend with sufficient balance and will be engaged with a hole reliably. However, as in the embodiment described above, the number of wings is preferably three. Compared to the case of two configurations, each wing portion bends in a well-balanced manner. Also, compared to the case of four or more configurations, the wing portions are hard to bend when densely packed. This is because there is no need to use.

  If the number of wing parts is two, the cross section in plan view of the central part is integrated with the wing parts and has a gentle substantially S shape. Further, when the number of wing parts is four or more, the cross section in plan view of the center part is a substantially quadrangular shape or a substantially polygonal shape. By increasing or decreasing the number of wings, it is possible to adjust the deflection margin and the holding force of the deflection.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited to the said embodiment. The present invention can be modified in various ways without departing from the scope of the claims.

DESCRIPTION OF SYMBOLS 10 Hole plug 20 Head 21 Flat surface 22 鍔 30 Leg part 31 Center part 32 Wing part 33 Inner peripheral wall part 34 Outer peripheral wall part 35 Tip wall part 36 Hinge part 37 Claw part 38 Inclined part 40 Deflection margin

Claims (7)

A hole plug for closing the opening comprising: a head having a diameter larger than a hole opened in the attached member; and a leg provided to protrude from a substantially center of the head;
The leg portion is formed of a central portion that is coaxial with the head portion, and a plurality of wing portions that are extended in a radial direction from the central portion,
The wing portion includes an inner peripheral wall portion facing the center portion, an outer peripheral wall portion opposite to the inner peripheral wall portion, and a tip wall portion connecting the inner peripheral wall portion and the outer peripheral wall portion. Formed,
The tip wall portion is formed of a claw portion that engages with an edge of the hole, and an inclined portion that is narrowed from the claw portion toward the tip of the leg portion,
A hole plug characterized by that. Either one of the central part or the wing part is formed hollow,
The hole plug according to claim 1. The outer peripheral wall portion is gradually formed thinner toward the tip wall portion,
The hole plug according to claim 1 or 2, characterized by the above-mentioned. The tip wall is formed thicker than the outer peripheral wall and the inner peripheral wall;
The hole plug according to any one of claims 1 to 3, wherein: The inner peripheral wall portion extends from the central portion via a hinge portion, and the hinge portion is formed thinner than the outer peripheral wall portion, the inner peripheral wall portion, and the tip wall portion,
The hole plug according to claim 1, wherein the hole plug is characterized in that: The wings are provided at substantially equal intervals in the circumferential direction of the central part, and the inner peripheral wall part is formed so as to be separated from the central part as it goes to the tip wall part,
The hole plug according to any one of claims 1 to 5, wherein: The central part is formed in a substantially S shape or a substantially polygonal shape according to the number of the wing parts,
The hole plug according to any one of claims 1 to 6, wherein:

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