JP2013217447A - Hole plug - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hole plug capable of reducing an insertion force into an installation hole.SOLUTION: An outside part 40B in an inclined connecting part 40 of a hole plug 14 gradually changes along the peripheral direction at an inclination θ1 to a surface S orthogonal to the axis of an outer peripheral wall 18. The inclination θ1 also becomes minimum at one end in the diameter direction of the hole plug 14, and becomes maximum at the other end in the diameter direction. Thus, when placing the hole plug 14 on an inserting installation hole 12, a part of becoming the maximum inclination side in an outside part 40B of the inclined connecting part 40 abuts on a peripheral edge of the installation hole 12 on the upper surface side of a body panel 10, and a clearance 51 is formed between a part of becoming the minimum inclination side in the outside part 40B of the inclined connecting part 40 and a peripheral edge of the installation hole 12 on the upper surface side of the body panel 10.

Description

  The present invention relates to a hole plug that covers a hole formed in a mounting member.

  Conventionally, as a hole plug, there exists patent document 1, for example. In this prior art, a cylindrical outer peripheral wall surface extending downward from an inner peripheral edge portion of a flange portion covering a peripheral edge portion of a mounting hole formed in the mounting member, and an upper portion folded back upward from the lower end of the outer peripheral wall surface. And an inner peripheral wall surface extending to the front. And the engagement nail | claw formed in the some engagement protrusion radially formed in the outer peripheral wall surface engages with the peripheral part of an attachment hole.

No. 02-008867

  However, in the hole plug of Patent Document 1, in order to increase the pulling force from the mounting hole and prevent it from coming off, the cross-sectional area of the engaging protrusion formed with the engaging claw is increased, The deformation load in the inward direction is increased. As a result, when the hole plug is inserted into the mounting hole, a deformation load to the inside of the engaging claw is increased, so that a large insertion force is required and it is difficult to insert the hole plug into the mounting hole.

  In view of the above fact, an object of the present invention is to obtain a hole plug that can reduce the insertion force into the mounting hole.

  According to a first aspect of the present invention, the hole plug of the present invention includes an annular flange portion that covers the peripheral edge portion of the attachment hole formed in the attachment member, and a cylinder that extends downward from the inner peripheral edge portion of the flange portion. An outer peripheral wall portion, an engaging claw that protrudes from the outer wall surface of the outer peripheral wall portion and engages with a peripheral edge portion of the mounting hole in the mounting member, and a vertical direction with a gap inside the outer peripheral wall portion A cylindrical inner wall portion extending to the upper end, a face plate closing the upper end inside the inner wall portion, a lower portion of the outer peripheral wall portion, and a lower portion of the inner wall portion, and from the upper outer periphery to the lower inner periphery Gradually inclined along the circumferential direction so that the angle of inclination with respect to a plane perpendicular to the axis of the outer peripheral wall portion is minimized at one end side in the radial direction of the flange portion and maximized at the other end in the radial direction. And an inclined connecting portion that has been changed.

  In the first aspect of the present invention, a vertical direction is provided with a space between the lower portion of the cylindrical outer peripheral wall portion extending downward from the inner peripheral edge portion of the flange portion of the hole plug and the inner side of the outer peripheral wall portion. An inclined connecting portion is connected to the lower portion of the cylindrical inner wall portion extending to the bottom. The inclined connecting portion is inclined from the outer peripheral upper side toward the inner peripheral lower side, and the inclination angle with respect to the surface orthogonal to the axial center of the outer peripheral wall portion is minimum at one end in the radial direction and maximum at the other end in the radial direction So as to gradually change along the circumferential direction. For this reason, when it is placed on the mounting hole for inserting the hole plug, the portion of the inclined connecting portion on the maximum inclination angle side comes into contact with the peripheral portion of the attachment hole and becomes a point of contact, and the minimum inclination angle side A gap is formed between the inclined connecting portion and the peripheral portion of the mounting hole, and serves as an upward escape point. For this reason, when the face plate which closes the inner side of the upper end of the inner wall portion is pressed in the direction of insertion into the mounting hole with the hole plug inserted in the mounting hole, first, only the part on the relief point side of the hole plug is inserted in the insertion direction. Move to and tilt. As a result, the clearance point side portion of the hole plug is inserted into the mounting hole from an oblique direction. After that, the front end point side portion of the hole plug is also inserted into the mounting hole, and the engaging claws formed to protrude from the outer wall surface of the outer peripheral wall portion are engaged with the peripheral portion of the mounting hole. As a result, the insertion force into the mounting hole is smaller than when the hole plug is inserted vertically into the mounting hole along the axial direction.

  According to a second aspect of the present invention, in the hole plug according to the first aspect, in the gap between the inner wall portion and the outer peripheral wall, one end in the radial direction is a maximum width portion and the other end in the radial direction is a minimum width portion. The face plate has a radius along the circumferential direction so that one end in the radial direction becomes the minimum radius portion and the other end in the radial direction becomes the maximum radius portion. Is gradually changing.

  In the second aspect of the present invention, the interval between the inner wall portion and the outer wall changes gradually along the circumferential direction so that one end in the radial direction becomes the maximum width portion and the other end in the radial direction becomes the minimum width portion. The radius of the face plate gradually changes along the circumferential direction so that one end in the radial direction becomes the minimum radius portion and the other end in the radial direction becomes the maximum radius portion. For this reason, while maintaining the length along the insertion direction of the hole plug in the mounting hole constant along the circumferential direction, the inclination angle of the inclined connecting portion is minimized at one end in the radial direction and the other end in the radial direction is It can be gradually changed along the circumferential direction so as to be maximized. As a result, the insertion force into the mounting hole can be reduced without changing the insertion stroke of the hole plug.

  According to a third aspect of the present invention, in the hole plug according to the first or second aspect, the engaging claw is not formed at a portion where the inclination angle is minimum.

  In this invention of Claim 3, the engaging claw is not formed in the site | part where an inclination | tilt angle becomes the minimum. For this reason, the clearance point side portion of the hole plug is more easily inserted into the mounting hole from an oblique direction. As a result, the insertion force into the mounting hole can be further reduced.

  According to a fourth aspect of the present invention, in the hole plug according to any one of the first to third aspects, the engaging claw is formed at a portion where the inclination angle is maximum.

  In this invention of Claim 4, the engagement nail | claw is formed in the site | part where an inclination | tilt angle becomes the maximum. For this reason, it is difficult to insert the portion on the point-of-contact point side of the hole plug into the mounting hole, but on the other hand, the portion on the escape point side is more easily inserted into the mounting hole from an oblique direction. As a result, the insertion force into the mounting hole can be further reduced.

  According to a fifth aspect of the present invention, in the hole plug according to any one of the first to fourth aspects, the engaging claw is formed by folding the inner side portion of the inclined connecting portion upward. It contacts the inner side surface of the portion of the outer peripheral wall portion.

  In the fifth aspect of the present invention, when the face plate of the hole plug is pushed upward in the direction of removal from the attachment hole formed in the attachment member, the inner wall portion is pushed up together with the face plate. For this reason, an inner wall part moves upwards with respect to the outer peripheral wall part currently fixed to the attachment hole of the attachment member by the flange part and the engaging claw. As a result, the outer portion of the inclined connecting portion that connects the lower portion of the outer peripheral wall portion and the lower portion of the inner wall portion is folded upward, and the inner portion of the inclined connecting portion is the portion of the outer peripheral wall portion where the engaging claw is formed Contact the inner surface. Therefore, it is possible to suppress the engagement claw from being deformed inward by the inner portion of the inclined connecting portion. For this reason, it becomes difficult for the engaging claw to come off from the mounting hole. As a result, the removal force from the hole plug mounting hole can be increased.

  Since the hole plug according to the first aspect of the present invention has the above configuration, the insertion force into the mounting hole can be reduced.

  Since the hole plug according to the second aspect of the present invention has the above-described configuration, the insertion force into the mounting hole can be reduced without changing the insertion stroke.

  Since the hole plug according to the third aspect of the present invention has the above-described configuration, the insertion force into the mounting hole can be further reduced.

  Since the hole plug according to the first aspect of the present invention has the above-described configuration, the insertion force into the mounting hole can be further reduced.

  Since the hole plug of the present invention according to claim 5 has the above-described configuration, the insertion force into the attachment hole can be reduced and the removal force from the attachment hole can be increased.

FIG. 8 is a cross-sectional view taken along the 1-1 cross-sectional line in FIG. 7 showing a state before the hole plug according to the first embodiment of the present invention is inserted into the mounting hole. It is an expanded sectional view corresponding to FIG. 1 which shows a part of outer peripheral part of the hole plug which concerns on 1st Embodiment of this invention. It is the perspective view seen from diagonally upward which shows the state before insertion to the attachment hole of the hole plug which concerns on 1st Embodiment of this invention. It is the perspective view seen from diagonally downward which shows the hole plug which concerns on 1st Embodiment of this invention. It is the top view seen from the lower part which shows the hole plug which concerns on 1st Embodiment of this invention. It is a side view showing a hole plug concerning a 1st embodiment of the present invention. It is the top view seen from the upper part which shows the hole plug which concerns on 1st Embodiment of this invention. It is sectional drawing corresponding to FIG. 1 which shows the state in the middle of the insertion to the attachment hole of the hole plug which concerns on 1st Embodiment of this invention. FIG. 9 is a cross-sectional view taken along a 9-9 cross-sectional line in FIG. 5 illustrating a state in which an extraction force is applied to the hole plug according to the first embodiment of the present invention. It is sectional drawing corresponding to FIG. 1 which shows the state before insertion to the attachment hole of the hole plug which concerns on 2nd Embodiment of this invention. It is sectional drawing corresponding to FIG. 1 which shows the state before insertion to the attachment hole of the hole plug which concerns on 3rd Embodiment of this invention.

Next, a first embodiment of the hole plug of the present invention will be described with reference to FIGS.
In the drawings, members (components) having the same or corresponding functions are denoted by the same reference numerals and description thereof is omitted as appropriate. Further, an arrow UP appropriately shown in these drawings indicates the upper side of the hole plug.

  As shown in FIG. 3, a mounting hole 12 is formed in a body panel 10 of an automobile as an example of a mounting member. A hole plug 14 formed of synthetic resin can be inserted into the mounting hole 12, and the mounting hole 12 is closed by the hole plug 14. Further, a flange portion 16 having a constant width is formed in an annular shape over the entire circumference at the outer peripheral edge of the upper end of the hole plug 14.

  As shown in FIG. 2, the flange portion 16 is inclined obliquely downward from the upper end of the outer peripheral wall portion 18, and when the mounting hole 12 is closed by the hole plug 14, the flange portion 16 is shown in FIG. 3. The peripheral edge 12 </ b> A of the mounting hole 12 on the upper surface of the body panel 10 is covered.

  As shown in FIG. 1, the outer peripheral wall portion 18 of the hole plug 14 extends in a cylindrical shape downward from the inner peripheral edge portion of the flange portion 16. The outer peripheral wall 18 is formed in parallel with the axial center 14A of the hole plug 14, and the axial center of the outer peripheral wall 18 coincides with the axial center 14A of the hole plug 14.

  As shown in FIGS. 5 and 6, a plurality of engaging claws 20 are formed on the outer wall surface of the lower portion of the outer peripheral wall portion 18 so as to protrude at predetermined intervals along the circumferential direction of the outer peripheral wall portion 18.

  As shown in FIG. 5, in the present embodiment, five engagement claws 20 are formed at equal intervals. In addition, each engagement claw 20 protrudes in an arc shape from the outer wall surface of the outer peripheral wall portion 18 radially outward in plan view.

  As shown in FIG. 2, the outer peripheral surface 20 </ b> A of the engaging claw 20 extends obliquely upward and outward. For this reason, when the hole plug 14 is inserted into the mounting hole 12 of the body panel 10, the outer peripheral surface 20 </ b> A of the engaging claw 20 slides with the inner edge of the mounting hole 12, and the engaging claw 20 is moved inward together with the outer peripheral wall 18. It is designed to be elastically deformed. Then, when the engaging claws 20 pass through the mounting hole 12, the engaging claws 20 are moved outward by the restoring force of the outer peripheral wall portion 18, and as shown in FIG. Is engaged with the peripheral edge 12B of the mounting hole 12.

  As shown in FIG. 2, an intermediate wall portion 26 as a cylindrical inner wall portion extends in the vertical direction with a space inside the outer peripheral wall portion 18, and the outer peripheral wall portion 18 and the intermediate wall portion A recess 24 is formed between the upper portion 26 and the upper portion 26. The intermediate wall portion 26 is formed in parallel with the axial center 14A of the hole plug 14. For example, the thickness M3 of the intermediate wall portion 26 is thicker than the thickness M1 of the outer peripheral wall portion 18 (M3>). M1).

  In addition, an inner peripheral wall portion 30 as a cylindrical inner wall portion is extended in the vertical direction inside the intermediate wall portion 26 with a space therebetween, and between the intermediate wall portion 26 and the inner peripheral wall portion 30. Is formed with a recess 28 having a lower opening. The inner peripheral wall portion 30 is formed in parallel with the axial center 14A of the hole plug 14. For example, the thickness M4 of the inner peripheral wall portion 30 is larger than the thickness M3 of the intermediate wall portion 26 (M4>). M3). Further, the thickness M4 of the inner peripheral wall portion 30 is gradually reduced from the upper side to the lower side, and the concave portion 28 is gradually expanded from the upper side to the lower side.

  As shown in FIG. 1, the inner side of the upper end portion 30 </ b> A of the inner peripheral wall portion 30 is closed by a circular face plate 34. As an example, the maximum thickness M5 of the face plate 34 is thicker than the thickness M4 of the inner peripheral wall portion 30 (M5> M4). The central portion 34A of the face plate 34 is curved in a hemispherical shape downward.

  As shown in FIG. 7, the space | interval (width) W1 of the recessed part 24 between the intermediate | middle wall part 26 and the outer peripheral wall 18 is changing gradually along the circumferential direction. The interval (width) W1 of the recesses 24 is such that one end in the diameter direction that is the radial direction of the hole plug 14 is the maximum width portion 24A, and the other end in the diameter direction that is the radial direction of the hole plug 14 is the minimum width. It is part 24B. Further, in the pair of central width portions 24C that are the centers of the maximum width portion 24A and the minimum width portion 24B in the recess 24, the interval (width) W1 of the recess 24 is equal to each other.

  On the other hand, the radius R1 of the face plate 34 gradually changes along the circumferential direction, and one end in the diameter direction of the hole plug 14 on the inner peripheral side of the maximum width portion 24A of the concave portion 24 becomes the minimum radius portion 34B. The other end in the diameter direction of the hole plug 14 on the inner peripheral side of the portion 24B is a maximum radius portion 34C. Further, the radius R1 of the face plate 34 is equal to each other in a pair of central radius parts 34D that are the center parts of the minimum radius part 34B and the maximum radius part 34C in the face plate 34.

  As shown in FIG. 2, the upper portion 26 </ b> A of the intermediate wall portion 26 is at an inner position slightly above the engaging claw 20, and the upper portion 26 </ b> A of the intermediate wall portion 26 and the central portion 30 </ b> B in the vertical direction of the inner peripheral wall portion 30 are located. They are connected by a connecting part 32. Further, the lower end 30 </ b> C of the inner peripheral wall portion 30 is located inside the lower end 26 </ b> B of the intermediate wall portion 26. As an example, the thickness M6 of the connecting portion 32 is thicker than the thickness M3 of the intermediate wall portion 26 (M6> M3), and is thinner than the thickness M5 of the face plate 34 (M6). <M5).

  The lower end 26 </ b> B of the intermediate wall portion 26 and the lower end 18 </ b> A of the outer peripheral wall portion 18 are connected by an inclined connecting portion 40. Further, the inner portion 40A of the inclined connecting portion 40 extends from the lower end 26B of the intermediate wall portion 26 toward the radially outer side of the hole plug 14. On the other hand, the outer side portion 40B of the inclined connecting portion 40 is inclined from the outer peripheral upper side toward the inner peripheral lower side, extends from the lower end 18A of the outer peripheral wall portion 18 toward the inner peripheral lower side, and Connected to the outer edge. In addition, the thickness M2 of the outer portion 40B of the inclined connecting portion 40 is thinner than the thickness M1 of the outer peripheral wall portion 18 (M1> M2), and the thickness M7 of the inner portion 40A of the inclined connecting portion 40 is The outer wall 40B is thicker than the wall thickness M2 of the outer portion 40B, and is substantially equal to the wall thickness M3 of the intermediate wall portion 26 (M7≈M3> M2).

  As shown in FIG. 1, the outer portion 40B of the inclined connecting portion 40 of the hole plug 14 is inclined with respect to the surface S perpendicular to the axis 14A of the hole plug 14 (surface S orthogonal to the axis of the outer peripheral wall 18). θ1 gradually changes along the circumferential direction. In addition, the inclination angle θ1 has the smallest one end in the diameter direction of the hole plug 14 on the outer peripheral side of the maximum width portion 24A of the concave portion 24, and the diameter of the hole plug 14 on the outer peripheral side of the minimum width portion 24B of the concave portion 24. The other end of the direction is the maximum.

  Therefore, when the hole plug 14 is placed in the mounting hole 12 to be inserted, the portion on the outermost side 40B of the inclined connecting portion 40 that is on the maximum inclination angle side (the portion on the right side in FIG. 1) is the attachment on the upper surface of the body panel 10. It comes into contact with the peripheral edge 12 </ b> A of the hole 12. On the other hand, a gap 51 is formed between a portion (left portion in FIG. 1) on the side of the minimum inclination angle in the outer portion 40 </ b> B of the inclined connecting portion 40 and the peripheral portion 12 </ b> A of the mounting hole 12 on the upper surface of the body panel 10. It has become so. That is, the portion of the hole plug 14 corresponding to the portion on the maximum inclination angle side in the outer portion 40B of the inclined connecting portion 40 becomes the portion 14B on the first contact point side, A part of the hole plug 14 corresponding to the part to be formed becomes a part 14C on the side of the upward escape point.

  For this reason, when the face plate 34 is pressed in the insertion direction of the mounting hole 12 in a state where it is placed in the mounting hole 12 into which the hole plug 14 is inserted, the portion 14C on the relief point side of the hole plug 14 becomes the portion 14B on the tip contact point side. Is moved in the insertion direction (in the direction of arrow P in FIG. 8). As a result, as shown by a solid line in FIG. 8, the hole plug 14 is inserted into the mounting hole 12 from an oblique direction (the direction of arrow P in FIG. 8). Thereafter, the point 14B on the hole plug 14 is also inserted into the attachment hole 12, and the hole plug 14 is attached to the attachment hole 12 as shown by a dotted line in FIG.

  Further, the interval (width) W1 of the recesses 24 and the radius R1 of the face plate 34 change so that one increases in the circumferential direction while the other decreases. Therefore, the inclination angle θ1 of the outer portion 40B of the inclined connecting portion 40 can be changed while the insertion length H1 of the inclined connecting portion 40 into the mounting hole 12 is kept constant along the circumferential direction. Yes. The insertion length H1 is a length from the lower end of the outer peripheral wall 18 to the upper end of the engaging claw 20.

  Further, in the present embodiment, as shown by a two-dot chain line in FIG. 9, in a state where the hole plug 14 is attached to the attachment hole 12 of the body panel 10, pressure or the like acts on the body panel 10 from the outside. When a pulling force (arrow F in FIG. 9) acts on the face plate 34 from the lower side to the upper side, the face plate 34 of the hole plug 14 is pushed upward as shown by the solid line in FIG. At this time, since the outer peripheral wall portion 18 is fixed to the mounting hole 12 of the body panel 10 by the flange portion 16 and the engaging claw 20, the intermediate wall portion 26 is pushed upward with respect to the outer peripheral wall portion 18. For this reason, the outer portion 40B of the inclined connecting portion 40 is folded upward at the approximate center, and the inner portion 40A of the inclined connecting portion 40 comes into contact with the lower inner surface of the outer peripheral wall portion 18. As a result, the engagement claw 20 can be prevented from being deformed inward by the inner portion 40 </ b> A of the inclined connecting portion 40.

  As shown in FIG. 2, in the hole plug 14 of the present embodiment, a protruding portion 50 that protrudes upward from the connecting portion 32 is formed at the upper end of the intermediate wall portion 26. Therefore, as shown in FIG. 3, when the hole plug 14 is viewed from above, the groove portion 52 formed between the flange portion 16 and the face plate 34 can be made small by the protruding portion 50. Yes.

(Action / Effect)
Next, the operation and effect of this embodiment will be described.

  In the present embodiment, as shown in FIG. 1, the inclination angle θ1 of the outer portion 40B of the inclined connecting portion 40 with respect to the surface S orthogonal to the axial center 14A of the hole plug 14 gradually changes along the circumferential direction. . In addition, the inclination angle θ1 has the smallest one end in the diameter direction of the hole plug 14 on the outer peripheral side of the maximum width portion 24A of the concave portion 24 and the hole plug 14 on the outer peripheral side of the minimum width portion 24B of the concave portion 24. The other end in the diameter direction is the maximum.

  Therefore, when the hole plug 14 is placed in the mounting hole 12 into which the hole plug 14 is inserted, the portion of the outer side portion 40B of the inclined connecting portion 40 on the maximum inclination angle side comes into contact with the peripheral portion 12A of the mounting hole 12 on the upper surface of the body panel 10. The hole plug 14 is a part 14B on the point-to-point side. On the other hand, a gap 51 is formed between a portion of the outer portion 40B of the inclined connecting portion 40B on the minimum inclination angle side and the peripheral portion 12A of the mounting hole 12 on the upper surface of the body panel 10, and a clearance point in the hole plug 14 is formed. It becomes the side part 14C.

  For this reason, when the face plate 34 is pressed in the insertion direction of the mounting hole 12 in a state where it is placed in the mounting hole 12 into which the hole plug 14 is inserted, the portion 14C on the relief point side of the hole plug 14 becomes the portion 14B on the tip contact point side. Moves in the insertion direction (in the direction of arrow P in FIG. 8). As a result, as shown by a solid line in FIG. 8, the hole plug 14 is inserted into the mounting hole 12 from an oblique direction (the direction of arrow P in FIG. 8). After that, the tip 14 side portion 14B of the hole plug 14 is also inserted into the mounting hole 12, and the engaging claws 20 formed on the outer wall surface of the outer peripheral wall portion 18 are formed as shown in FIG. The panel 10 engages with the peripheral edge 12 </ b> B of the mounting hole 12 on the lower surface of the panel 10. Further, the hole plug 14 is attached to the attachment hole 12 by the flange portion 16 of the hole plug 14 covering the peripheral edge portion 12 </ b> A of the attachment hole 12 on the upper surface of the body panel 10.

  As a result, in this embodiment, the insertion force of the hole plug 14 into the attachment hole 12 can be made smaller than when the hole plug 14 is inserted vertically into the attachment hole 12 along the axial direction of the hole plug 14.

  Further, in the present embodiment, the interval (width) W1 of the recesses 24 and the radius R1 of the face plate 34 change such that one increases along the circumferential direction while the other decreases. Therefore, the inclination angle θ1 of the outer portion 40B of the inclined connecting portion 40 is changed while the insertion length H1 (see FIGS. 1 and 2) of the hole plug 14 into the mounting hole 12 is kept constant along the circumferential direction. be able to. As a result, the insertion force into the mounting hole 12 can be reduced without changing the insertion stroke of the hole plug 14, that is, with a configuration in which the protrusion amount to the lower surface side of the body panel 10 is constant along the circumferential direction of the hole plug 14. Can be small.

  Moreover, in this embodiment, as shown in FIG. 1, the engaging claw 20 is not formed in the site | part where the inclination | tilt angle (theta) 1 of the outer side part 40B becomes the minimum. For this reason, the portion 14 </ b> C on the relief point side of the hole plug 14 is further easily inserted into the mounting hole 12 from an oblique direction. As a result, the insertion force into the mounting hole 12 can be further reduced.

  Moreover, in this embodiment, the engaging claw 20 is formed in the site | part in which the inclination angle (theta) 1 of the outer side part 40B becomes a maximum inclination angle. For this reason, the tip 14B portion 14B of the hole plug 14 is difficult to be inserted into the mounting hole 12, while the escape point side portion 14C is further easily inserted into the mounting hole 12 from an oblique direction. As a result, the insertion force into the mounting hole 12 can be further reduced.

  Further, in the present embodiment, as indicated by a two-dot chain line in FIG. 9, pressure or the like acts on the body panel 10 to which the hole plug 14 is attached from the outside, and the removal force (see FIG. 9) is applied to the face plate 34 of the hole plug 14. When the arrow F) acts from below to above, the face plate 34 of the hole plug 14 is pushed upward as shown by the solid line in FIG. Further, when the face plate 34 of the hole plug 14 is pushed upward, the intermediate wall portion 26 is fixed to the outer peripheral wall portion 18 fixed to the mounting hole 12 of the body panel 10 by the flange portion 16 and the engaging claw 20. Move upward.

  As a result, the outer portion 40B of the inclined connecting portion 40 is bent downward and is folded upward at the approximate center. Thereby, the inner side portion 40A of the inclined connecting portion 40 abuts on the inner side surface of the portion of the outer peripheral wall portion 18 where the engaging claws 20 are formed (lower portion of the outer peripheral wall portion 18).

  When the outer portion 40B of the inclined connecting portion 40 is folded upward at the substantially central portion, the lower end 26B of the intermediate wall portion 26 is elastically deformed inward using the interval 28, so that the inclined connecting portion 40 The outer portion 40B is reliably folded back.

  Therefore, the engaging claw 20 can be prevented from being deformed inward by the inner portion 40A of the inclined connecting portion 40. For this reason, it becomes difficult to remove from the mounting hole 12 of the hole plug 14, and the removal force can be increased.

  When the hole plug 14 is inserted into the mounting hole 12, the inner side portion 40 </ b> A of the inclined connecting portion 40 is not in contact with the inner side surface of the outer peripheral wall portion 18 where the engagement claw 20 is formed. For this reason, when the engaging claw 20 slides on the mounting hole 12, the outer peripheral wall portion 18 is easily elastically deformed inward with the engaging claw 20.

(Other embodiments)
While the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to the above-described embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, in the above-described embodiment, the hole plug 14 has the two wall portions of the intermediate wall portion 26 and the inner peripheral wall portion 30 as the inner wall portion, but instead of this, the second embodiment shown in FIG. It is good also as a structure whose inner wall part is the one wall part 26 like a form. Although not shown, a configuration having three or more inner wall portions may be employed.

  Moreover, in each said embodiment, the structure which changes inclination | tilt angle (theta) 1 of the outer side part 40B of the inclination connection part 40, with the insertion length H1 to the attachment hole 12 of the hole plug 14 kept constant along the circumferential direction, However, instead of this, for example, the length H1 along the insertion direction of the hole plug 14 into the mounting hole 12 is changed along the circumferential direction as in the third embodiment shown in FIG. With this configuration, the inclination angle θ1 of the outer portion 40B of the inclined connecting portion 40 may gradually change along the circumferential direction.

  Moreover, in each said embodiment, it was set as the structure which does not form the engagement nail | claw 20 in the site | part where the inclination angle (theta) 1 of the outer side part 40B of the inclination connection part 40 becomes the minimum, but it replaces with this and the inclination angle (theta) 1 of the outer side part 40B. It is good also as a structure which formed the engagement nail | claw 20 in the site | part which becomes minimum. Moreover, in each said embodiment, although it was set as the structure which formed the engaging claw 20 in the site | part with which the inclination angle (theta) 1 in the outer side part 40B of the inclination connection part 40 becomes the maximum, it replaces with this and the inclination angle (theta) 1 becomes the maximum. It is good also as a structure which does not form the engagement nail | claw 20 in a site | part.

  In the above embodiments, the five engaging claws 20 are formed at equal intervals, but the number of the plural engaging claws 20 may be other than five. Moreover, the planar view shape of the engaging claw 20 may be a square or a triangle instead of an arc. Further, the engaging claws 20 may be formed continuously on the entire circumference of the outer peripheral wall portion 18.

  Further, in each of the above embodiments, the protruding portion 50 protruding above the connecting portion 32 is formed at the upper end of the intermediate wall portion 26 in the hole plug 14, but the protruding portion 50 may not be formed.

  In each of the above-described embodiments, the configuration in which the mounting hole 12 formed in the body panel 10 of the automobile as an example of the mounting member is closed by the hole plug 14 has been described. However, the hole plug 14 of the present invention is the body panel of the automobile. It is also possible to close attachment holes formed in attachment members other than 10.

10 Body panel (mounting member)
12 Mounting hole 14 Hole plug 14A Hole plug axis (axis of outer peripheral wall)
16 flange portion 18 outer peripheral wall portion 20 engaging claw 26 intermediate wall portion (inner wall portion)
30 Inner wall (inner wall)
32 connecting portion 34 face plate 40 inclined connecting portion 40A inner side portion of inclined connecting portion 40B outer side portion of inclined connecting portion S surface orthogonal to axis of hole plug (surface orthogonal to axis of outer peripheral wall portion)

Claims (5)

An annular flange covering the peripheral edge of the mounting hole drilled in the mounting member;
A cylindrical outer peripheral wall portion extending downward from the inner peripheral edge of the flange portion;
An engaging claw that is formed to protrude from the outer wall surface of the outer peripheral wall portion and engages with a peripheral edge portion of the mounting hole in the mounting member;
A cylindrical inner wall portion extending in the vertical direction with an interval inside the outer peripheral wall portion; and
A face plate that closes the inside of the upper end of the inner wall portion;
The lower portion of the outer peripheral wall portion and the lower portion of the inner wall portion are connected and inclined from the outer peripheral upper side toward the inner peripheral lower side, and an inclination angle with respect to a plane orthogonal to the axial center of the outer peripheral wall portion is An inclined connecting portion that gradually changes along the circumferential direction so that one end side in the radial direction is minimum and the other end in the radial direction is maximum;
Hole plug with.   The gap between the inner wall portion and the outer peripheral wall gradually changes along the circumferential direction so that one end in the radial direction becomes the maximum width portion and the other end in the radial direction becomes the minimum width portion, The hole plug according to claim 1, wherein the radius gradually changes along the circumferential direction so that one end in the radial direction becomes a minimum radius portion and the other end in the radial direction becomes a maximum radius portion.   The hole plug according to claim 1, wherein the engagement claw is not formed at a portion where the inclination angle is minimum.   The hole plug according to any one of claims 1 to 3, wherein the engaging claw is formed at a portion where the inclination angle is maximized.   The inner part of the inclined connecting part is in contact with an inner surface of a part of the outer peripheral wall part where the engaging claw is formed by folding the outer part upward. The described hole plug.

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