KR102021228B1 - Drain plug - Google Patents

Abstract

(Problem) The drain plug which suppressed the formation of the clearance gap between a to-be-mounted part which has a drain hole and a plug is provided.
(Solution means) The drain plug 10 has a plurality of flanges 11 covering the drainage holes of the mounted portion and a plurality of flanges 11 extending from the rear surface 11R of the flange portion 11 and engaged with the peripheral edges of the drain holes. And engaging legs 12 and 13. Each of the engaging legs 12 and 13 extends at a separate position on the rear surface 11R of the flange portion 11, and the flange portion 11 extends into each of the engaging legs within the flange portion 11 ( The connection part 21a, 22a which is the part which 12, 13 connects, and the 1st thin part 23 which is thinner than this connection part 21a, 22a and located between the connection part 21a, 22a at least is included.

Description

Drain plug {DRAIN PLUG}

The present invention relates to a drain plug mounted to a through hole formed in a panel of an automobile or the like.

The rear gate, the trunk lid, the front door, the rear door, and the like, which the automobile has, are formed of a vehicle body panel composed of an outer panel and an inner panel. The inner panel and the outer panel are welded to each other at the tip, and a predetermined gap is formed between the inner panel and the outer panel, so that the vehicle body panel has a predetermined thickness. Since rain water and water for washing the vehicle body may enter between the inner panel and the outer panel, a drain hole for discharging water in the vehicle body panel to the outside of the vehicle body panel is formed.

These drainage holes are provided with plugs for preventing exhaust gas and dust from entering the interior of the vehicle body panel. The plug has a head covering the drainage hole and one catching leg extending from the head. When the locking leg is inserted into the drain hole, the head and the locking leg sandwich the inner panel so that the plug is attached to the drain hole (see Patent Document 1, for example).

Patent Document 1: Japanese Patent No. 5374311

By the way, since an inner panel makes a predetermined space | interval between this inner panel and an outer panel, it has a curved shape in the vicinity of the welding part of an inner panel and an outer panel in many cases. In addition, the drain hole is often formed in a portion having a curved shape in the vicinity of the welded portion, that is, in the inner panel, for the purpose of increasing the efficiency of the drainage water in the drain hole. Therefore, the plug is required to have a configuration capable of suppressing the formation of a gap between the portion to be mounted and the plug by following the shape of the portion to be mounted such as in the vicinity of the weld portion in the inner panel.

An object of the present invention is to provide a drain plug capable of suppressing the formation of a gap between a plug having a drain hole and a plug.

The drain plug for solving the above problems includes a flange portion covering at least a part of the drain hole of the mounted portion, and a plurality of engaging leg portions extending from the rear surface of the flange portion and engaged with the peripheral edge of the drain hole. It is a drain plug to be provided. Each engaging leg portion extends at a separate position on the rear surface of the flange portion, and the flange portion is a portion which is connected to each of the engaging leg portions in the flange portion, and the thickness is thinner than the connecting portion. It includes a thin portion located between the connecting portion.

According to the said structure, a flange part tends to bend by making the thin part located between connection parts bend position. As a result, the flange portion is easily deformed into a shape suitable for engaging the circumferential edge portion and the engaging leg portion of the drain hole, so that the circumferential edge of the drain hole in the state where the circumferential edge portion of the drain hole is engaged with It is suppressed that a gap is formed between the portion and the flange portion, and further, that a gap is formed between the drainage hole and the flange portion.

In the drain plug, the thin portion is a bottom of the groove, and the groove preferably extends along one direction.

According to the said structure, a flange part tends to bend along one direction.

In the drain plug, the plurality of engaging legs include a first engaging leg, and the flange includes a first connecting portion that is a portion to which the first engaging leg is connected in the flange. The first engagement leg portion extends from the first connection portion toward the end portion of the flange portion, and when the first engagement leg portion is inserted into the drain hole, the first engagement leg portion and the flange portion are drained out. It is desirable to sandwich the peripheral edge of the hole.

According to the above configuration, when the first engaging leg portion is inserted into the drainage hole, the first engaging leg portion and the flange portion can be interposed between the peripheral edges of the drainage hole. It is possible to increase the strength of the engagement of the peripheral edge of the.

In the drain plug, the flange portion preferably has a concave portion leading to the drain hole at the end of the flange portion.

According to the said structure, by covering a drain hole by a flange part, water is easy to be discharged | emitted from a drain hole, restraining water from entering into the drain hole from the exterior.

The said drain plug WHEREIN: The said flange part is seen from the plane which opposes the said back surface of the said flange part (henceforth "plane view"), between at least 1 of the said connection part, and between the edge part of the said flange part. It is desirable to have a thin portion located.

According to the said structure, since the thin part used as the starting point of a bending of a flange part has a some plural around a connection part, compared with the structure in which a flange part has only one thin part, a flange part becomes easier to deform | transform, and also the deformation of a flange part It becomes easy to follow by the shape of this to-be-mounted part.

According to this invention, it can suppress that a clearance gap is formed between the to-be-mounted part which has a drain hole, and a drain plug.

BRIEF DESCRIPTION OF THE DRAWINGS The side view which shows the side structure of the drain plug in one Embodiment of a drain plug.
2 is a cross-sectional view showing a cross-sectional structure of the drain plug.
Fig. 3 is a top view showing the top structure of the flange portion in planar view facing the surface of the flange portion;
4 is a perspective view showing a perspective structure of the drain plug viewed from a direction opposite to the rear surface of the flange portion;
Fig. 5 is a broken perspective view of part broken in the perspective structure of the drain plug viewed from the direction opposite to the rear surface of the flange portion;
6 is an operation diagram for explaining the operation of the drain plug.
7 is an operation diagram for explaining the operation of the drain plug.
8 is an operation diagram for explaining the operation of the drain plug.

With reference to FIGS. 1-8, the drain plug attached to the drain hole which the vehicle body panel which comprises a rear gate among the vehicle body panels with which an automobile is equipped as an embodiment which actualized the drain plug is demonstrated. Hereinafter, the configuration of the drain plug and the action of the drain plug will be described in order.

<Configuration of Drainage Plug>

With reference to FIGS. 1-5, the structure of a drain plug is demonstrated.

As shown in FIG. 1, the drain plug 10 is provided with the flange part 11, the 1st engagement leg part 12, and the 2nd engagement leg part 13. As shown in FIG. The flange part 11 covers the drainage hole which a to-be-mounted part which is a mounting object of the drain plug 10 has. Each of the first engagement leg portion 12 and the second engagement leg portion 13 extends from the rear surface of the flange portion 11 and engages with the peripheral edge portion of the drainage hole. The flange part 11, the 1st engagement leg part 12, and the 2nd engagement leg part 13 are integrally shape | molded by injection molding, for example. The forming material of the drain plug 10 is, for example, an elastomer, and is preferably an olefinic thermoplastic elastomer (TPO).

As shown in FIG. 2, the flange portion 11 includes a surface 11F and a rear surface 11R that is a surface opposite to the surface 11F. Each of the first engagement leg portion 12 and the second engagement leg portion 13 extends in a direction away from the back surface 11R at a separate position on the back surface 11R of the flange portion 11. have.

The flange part 11 includes the connection parts 21a and 22a which are the parts which the engagement leg parts 12 and 13 connect in this flange part 11, The first of two connection parts 21a and 22a. The connection part which the engagement leg part 12 connects is a 1st connection part 21a, and the connection part which the 2nd engagement leg part 13 connects is a 2nd connection part 22a. The flange portion 11 includes the first thin portion 23, and the average value of the thickness of the first thin portion 23 is thinner than the average value of the thickness of the first connecting portion 21a and the second connecting portion 22a. Moreover, the 1st thin part 23 is located between the 1st connection part 21a and the 2nd connection part 22a. The first thin portion 23 is the bottom of the first groove 11a which is concave toward the rear surface 11R from the surface 11F.

The flange portion 11 further includes a second thin portion 24, and the second thin portion 24 has a second engagement leg portion in a plan view facing the rear surface 11R of the flange portion 11. It is located between the 13 and the end portion 11E, which is the edge of the flange portion 11. The second thin portion 24 is the bottom of the second groove 11b which is concave toward the rear surface 11R from the surface 11F. The thickness of the flange part 11 is a part on the opposite side to the 1st thin part 23 with respect to the 1st connection part 21a in the flange part 11, from the 1st connection part 21a to the edge part 11E. Gradually thinner toward the end portion 11E in the portion on the side opposite to the second connecting portion 22a with respect to the second thin portion 24.

As described above, since the flange portion 11 is thin in the vicinity of the end portion 11E, when the flange portion 11 is attached to the drainage hole, the end 11E of the flange portion 11 is the circumference of the drainage hole. It is easy to follow the shape of the edge part.

As mentioned above, the 1st connection part 21a and the 2nd connection part 22a are the parts to which the engaging legs 12 and 13 connect. The first connecting portion 21a and the second connecting portion 22a are portions in which the high rigidity is required in the flange portion 11 after positioning the flange portion 11 with respect to the drainage hole. On the other hand, the first thin portion 23 and the second thin portion 24 are highly flexible in the flange portion 11 after following the end 11E of the flange portion 11 in the shape of the peripheral edge portion of the drain hole. Last name is required.

On the other hand, in the said flange part 11, when an external force acts on this flange part 11, it makes it bend in the flange part 11 rather than the 1st connection part 21a and the 2nd connection part 22a. In the 1st thin part 23 and the 2nd thin part 24 which are desired parts, thickness is thinner than the 1st connection part 21a and the 2nd connection part 22a. In other words, in the flange portion 11, when an external force acts on the flange portion 11, the flange portion 11 does not want to be bent in the flange portion 11 than the first thin portion 23 and the second thin portion 24. In the 1st connection part 21a and the 2nd connection part 22a which are not a part, thickness is thicker than the 1st thin part 23 and the 2nd thin part 24. As shown in FIG.

As shown in FIG. 3, in the planar view which opposes the surface 11F of the flange part 11, the 1st groove 11a is extended along the X direction which is one direction. In the planar view facing the surface 11F, the second groove 11b extends along the X direction similarly to the first groove 11a, and is the first groove in the Y direction which is a direction orthogonal to the X direction. 11a and the 2nd groove 11b are provided in parallel at intervals. Each of the first groove 11a and the second groove 11b extends substantially over the entire flange portion 11 in the Y direction. In other words, in the planar view facing the surface 11F of the flange portion 11, the first thin portion 23 and the second thin portion 24 extend along the X direction and are spaced in the Y direction. It is attached to this.

Thus, since the 1st thin part 23 is the bottom part of the 1st groove 11a extended along a X direction, the flange part 11 tends to bend along a X direction. Moreover, since the 2nd thin part 24 is also the bottom part of the 2nd groove | channel 11b extended along a X direction, the flange part 11 tends to bend along a X direction. Moreover, since the flange part 11 has the 2nd thin part 24 in addition to the 1st thin part 23 as a thin part used as the starting point of the bending of the flange part 11, the flange part 11 is Compared with the configuration having only the first thin portion 23, the flange portion 11 is more easily deformed. Therefore, the deformation of the flange portion 11 can be easily followed by the attached portion.

The flange portion 11 includes a first thick portion 21, a second thick portion 22, and a third thick portion 25, and includes a first thick portion 21 and a first thin portion in the Y direction. 23), the 2nd thick part 22, the 2nd thin part 24, and the 3rd thick part 25 are provided in the order of description. The first thick portion 21, the second thick portion 22, and the third thick portion 25 include portions thicker than the first thin portion 23 and the second thin portion 24. The first thick portion 21 includes the above-described first connecting portion 21a, and the second thick portion 22 includes the above-described second connecting portion 22a.

In a plan view facing the surface 11F, the flange portion 11 has two third grooves 11c extending along the Y direction, each third groove 11c having an end portion of the flange portion 11. It has the part along the part extended along the Y direction in 11E, and the part along the corner part of the edge part 11E. Each 3rd groove 11c is connected to the 1st groove 11a and the 2nd groove 11b in the part extended along the Y direction in this 3rd groove 11c. In the part in which the 3rd groove | channel 11c is located among the flange parts 11, thickness is thin compared with the structure which does not have the 3rd groove | channel 11c. Therefore, the part located in the vicinity of the edge part 11E in the flange part 11 becomes easy to follow the shape of a to-be-mounted part.

As shown in FIG. 4, the flange portion 11 has a concave bowl shape toward the center portion of the flange portion 11 when viewed from the direction opposite to the rear surface 11R of the flange portion 11. The flange part 11 is a taper part including the edge part 11E over the whole circumferential direction of this flange part 11, and has a taper part tapering toward the center part of the flange part 11. Each of the first thick portion 21, the second thick portion 22, and the third thick portion 25 includes a portion of the tapered portion. In the tapered portion, the portion having a smaller distance from the end portion 11E of the flange portion 11 is thinner.

The flange part 11 has the recessed part 11d which communicates with the drain hole at the edge part 11E of this flange part 11. The recessed part 11d is located in the edge part 11E included in the 3rd thick part 25 in the flange part 11. When the flange portion 11 covers the drainage hole, the flange portion 11 makes it easy to discharge the water from the drainage hole through the recessed portion 11d while suppressing the entry of water or the like from the outside into the drainage hole. have.

The 2nd engagement leg part 13 extends along the plane which cross | intersects the XY plane so that it may become far from the back surface 11R of the flange part 11, and has the shape which has predetermined thickness in a Y direction. The length of the second engaging leg portion 13 in the X direction is shorter than the length of the first thin portion 23 in the X direction. In the 2nd engaging leg part 13, the edge part connected to 11 R of back surfaces of the flange part 11 is a base end, and the edge part on the opposite side to this base end is a tip end. In the flange part 11, the length of the 2nd connection part 22a in the X direction is equal to the length of the base end of the 2nd engagement leg part 13 in the X direction, and is 2nd in the Y direction. The length of the connection part 22a is equal to the thickness of the base end of the 2nd engagement leg part 13 along a Y direction. That is, in the flange part 11, the part in which the base end of the 2nd engagement leg part 13 projected to the flange part 11 is the 2nd connection part 22a in the flange part 11. As shown in FIG.

The engaging protrusion 13a which protruded toward the direction away from each other is located in the surface which opposes each other in the X direction among the outer peripheral surfaces of the 2nd engaging leg part 13. As shown in FIG. When the drain plug 10 is attached to the drain hole, the engaging protrusion 13a projects toward the peripheral edge of the drain hole rather than the edge of the drain hole. Therefore, when the force in the direction in which the drain plug 10 deviates from the drain hole unnecessarily acts on the drain plug 10, the engaging projection 13a abuts against the peripheral edge of the drain hole, thereby draining the drain plug ( 10) is suppressed from falling out of the drain hole.

The second engagement leg portion 13 has two thicknesses penetrating the second engagement leg portion 13 along the direction in which the second engagement leg portion 13 and the first engagement leg portion 12 are arranged in parallel. It has the relief part 13b. The two thickness reduction parts 13b are arranged side by side along the direction orthogonal to the direction in which the 2nd engagement leg part 13 and the 1st engagement leg part 12 are arranged in parallel. Each thickness reducing part 13b extends from the rear surface 11R of the flange part 11 to just before the front end of the second engagement leg part 13. Since the 2nd engagement leg part 13 has two thickness reduction parts 13b, each thickness reduction part 13b is made into the other thickness as a force along the direction in which the two thickness reduction parts 13b are parallel. When the force which becomes concave toward the relief part 13b acts on the 2nd engagement leg part 13, the 2nd engagement leg part 13 tends to bend. Therefore, when inserting the second engagement leg portion 13 into the drainage hole, the shape of the second engagement leg portion 13 tends to change, and furthermore, the second engagement leg portion 13 is the engagement protrusion portion. Even if it has 13a, the 2nd engagement leg part 13 is easy to enter in a drain hole.

As shown in FIG. 5, the first engagement leg 12 extends from the first connection portion 21a toward the end 11E of the flange portion 11, and the first engagement leg 12 is drained. When inserted into the hole, the first engaging leg portion 12 and the flange portion 11 are configured to sandwich the circumferential edge portion of the drainage hole. Therefore, the strength of the engagement of the 1st engagement leg part 12 and the circumferential edge part can be raised. In the 1st engagement leg part 12, the edge part connected to 11 R of back surfaces of the flange part 11 is a base end, and the edge part on the opposite side to this base end is a tip end. In the X direction, the length of the base end of the first engagement leg portion 12 is shorter than the length of the base end of the second engagement leg portion 13 and is shorter than the length of the first thin portion 23.

The first engagement leg portion 12 has a substantially hook shape projecting from the rear surface 11R of the flange portion 11, and is composed of a proximal element including the proximal end and a proximal element including the proximal end. The proximal element of the first engagement leg 12 extends away from the back surface 11R, and the proximal element of the first engagement leg 12 is planar at the proximal element of the first engagement leg 12. It extends toward the end 11E of the branch 11. Thus, since the front end element of the 1st engagement leg part 12 extends along the direction different from the 2nd engagement leg part 13, when the to-be-mounted part which has a drain hole has a curved shape, Both the first engagement leg 12 and the second engagement leg 13 are likely to be engaged at different positions in the peripheral portion of the drainage hole.

In the flange part 11, the length of the 1st connection part 21a in the X direction is equal to the length of the base end of the 1st engagement leg part 12 in the X direction, and is 1st in the Y direction. The length of the connection part 21a is equal to the thickness of the base end of the 1st engagement leg part 12 along a Y direction. That is, the part which the base end of the 1st engagement leg part 12 projected to the flange part 11 is the 1st connection part 21a in the flange part 11.

<Action of drain plug>

The operation of the drain plug 10 will be described with reference to FIGS. 6 to 8. 6 and 8, as the shape when the drain plug 10 is inserted into the drain hole, the shape of the drain plug 10 when the mounting of the drain plug 10 to the drain hole is started This is indicated by the dashed line.

As shown in FIG. 6, the vehicle body panel 30 to which the drain plug 10 is mounted includes an inner panel 31 and an outer panel 32. The vehicle body panel 30 includes a welded portion 30a to which the inner panel 31 and the outer panel 32 are welded at one end, for example.

The inner panel 31 is curved in a direction away from the outer panel 32 in the vicinity of the welded portion 30a, and then the outer panel 32 maintains a distance between the outer panel 32 at a predetermined value. Has a shape extending along the parallel direction. A drainage hole 31a is formed in the inner panel 31 so as to exceed a curved portion of the inner panel 31, and a portion including the drainage hole 31a in the inner panel 31 is a part to be mounted 31b. )to be. The mounted portion 31b includes a circumferential edge portion 31b1 that partitions the drain hole 31a.

When the drain plug 10 is mounted in the drain hole 31a, the first engaging leg portion 12 is first inserted into the drain hole 31a, whereby the tip of the first engaging leg portion 12 and the plan A portion of the branch 11 that faces the tip of the first engagement leg 12 sandwiches the peripheral edge portion 31b1 of the drainage hole 31a. Next, the force of the direction which presses the 2nd engagement leg part 13 into the drainage hole 31a from the surface 11F of the flange part 11 is added, and the 2nd engagement leg part 13 is added. Is pressed into the drain hole 31a.

In this way, when the second engagement leg portion 13 is engaged with the circumferential edge portion 31b1 of the drainage hole 31a, a force for pressing each engagement leg portion into the drainage hole 31a is applied to the flange portion 11. In addition, the flange part 11 tends to bend by making the 1st thin part 23 located between the 1st connection part 21a and the 2nd connection part 22a into a bend position. Thereby, the engagement of the circumferential edge part 31b1 and the 1st engagement leg part 12 of the drainage hole 31a, and the engagement of the circumferential edge part 31b1 and the 2nd engagement leg part 13 are carried out. The flange portion 11 is easily deformed into an appropriate shape. Therefore, a gap is formed between the peripheral edge portion 31b1 and the flange portion 11 in a state where the peripheral edge portion 31b1 of the drainage hole 31a and the respective engagement leg portions are engaged. This suppresses the formation of a gap between the drainage hole 31a and the flange portion 11.

When the drain plug 10 is mounted in the drain hole 31a, the flange portion 11 covers the entire drain hole 31a. In addition, when the drain plug 10 is attached to the drain hole 31a, the flange portion 11 is easily deformed to follow the circumferential edge portion 31b1 of the drain hole 31a. The recessed portion 11d communicates with the drain hole 31a through the circumferential edge portion 31b1. As a result, the water discharged from the drainage hole 31a to the outside of the drainage hole 31a moves to the circumferential edge portion 31b1 of the drainage hole 31a, and then the drain plug 10 in the recess 11d. Discharged outside).

As shown in FIG. 7, when the second engagement leg portion 13 is inserted into the drain hole 31a, the engagement protrusion of the second engagement leg portion 13 is deformed by deforming the thickness reducing portion 13b. 13a is press-fitted between the inner panel 31 and the outer panel 32. As a result, the flange 11 and the engaging protrusion 13a are sandwiched by the mounted portion 31b, so that the drain plug 10 is attached to the mounted portion 31b so as to cover the drain hole 31a. .

As mentioned above, since the 3rd groove 11c is located along the edge part 11E of the flange part 11, the deformation | transformation in the edge part 11E of the flange part 11 is carried out of the to-be-mounted part 31b. Easy to follow shape As a result, the formation of a gap between the flange portion 11 and the mounted portion 31b is suppressed.

In addition, as shown in FIG. 8, in the vehicle body panel 40 on which the drain plug 10 is mounted, the distance between the inner panel 41 and the outer panel 42 is large, which is larger than the example shown in FIG. 7. The entire drain hole 41a may be formed in the curved inner panel 41. For example, the inner panel 41 is curved with respect to the outer panel 42 starting from the welded part 40a, and this to-be-mounted part 41b and the outer panel 42 are formed in the to-be-mounted part 41b. Sometimes the angle is around 45 °.

Even when the drain plug 10 is mounted on such a body panel 40, the first engagement leg portion 12 and the flange portion 11 sandwich the circumferential edge portion 41b1 of the drainage hole 41a. In this case, when the second engaging leg portion 13 is press-fitted into the drain hole 41a, the flange portion 11 tends to bend from the first thin portion 23 as a starting point. Therefore, it is suitable for the engagement of the circumferential edge part 41b1 and the 1st engagement leg part 12 of the drain hole 41a, and the engagement of the circumferential edge part 41b1 and the 2nd engagement leg part 13, respectively. The flange portion 11 is easily deformed into a shape.

In addition, since the flange part 11 has the 2nd thin part 24 in addition to the 1st thin part 23, even if the standing part of the inner panel 41 is steep, the plan is made from the 2nd thin part 24 as a starting point. Since the branch portion 11 is easily bent, the flange portion 11 tends to deform along the shape of the circumferential edge portion 41b1 of the drain hole 41a. Therefore, the deformation of the flange portion 11 easily follows the shape of the circumferential edge portion 41b1, and furthermore, the formation of a gap between the flange portion 11 and the drain hole 41a is suppressed.

As described above, according to one embodiment of the drain plug, the following effects can be obtained.

(1) The flange part 11 tends to bend by making the 1st thin part 23 located between the 1st connection part 21a and the 2nd connection part 22a into a bend position. Thereby, the flange part 11 tends to deform | transform into the shape suitable for the engagement of the circumferential edge part of a drain hole and each engagement leg part. Therefore, a gap is formed between the peripheral edge portion of the drainage hole and the flange portion 11 in a state where the peripheral edge portion of the drainage hole is engaged with each engaging leg portion, and furthermore, the drainage hole and the flange portion It is suppressed that a gap is formed between (11).

(2) Since the first thin portion 23 is the bottom of the first groove 11a extending along the X direction, the flange portion 11 tends to bend along the X direction.

(3) When the first engaging leg 12 is inserted into the drainage hole, since the first engaging leg 12 and the flange 11 can be interposed between the peripheral edges of the drainage hole, It is possible to increase the strength of the engagement of the first engagement leg 12 and the peripheral edge of the drainage hole.

(4) By covering a part of the drain hole by the flange portion 11, water is easily discharged from the drain hole while preventing water or the like from entering the drain hole.

(5) Since the flange portion 11 has a plurality of thin portions that are the starting point of the bending of the flange portion 11 around two connection portions, the flange portion 11 has only the first thin portion 23. On the other hand, the flange portion 11 is more easily deformed, and furthermore, the deformation of the flange portion 11 can be easily followed by the shape of the mounted portion.

In addition, embodiment mentioned above can be changed suitably as follows and can be implemented.

The size of the flange portion 11 has a size covering the entire drain hole when the drain plug 10 is mounted in the drain hole, but may be a size covering a part of the drain hole. Even in such a configuration, since the flange portion 11 covers a part of the drainage hole when the drain plug 10 is mounted in the drainage hole, water or dust enters the drainage hole as compared with a state where the drainage hole is not covered at all. Suppressed.

The flange portion 11 is not limited to the above-described bowl shape but may have a flat plate shape. Even in such a configuration, if the flange portion 11 has a thin portion between the engagement legs, the flange portion 11 deforms to a shape suitable for engagement between the engagement legs and the drain hole, and thus, the above-mentioned (1 ) Can be obtained.

If the engagement protrusion 13a of the second engagement leg 13 can be bent to the extent that the engagement protrusion 13a is pushed in between the inner panel and the outer panel, two thickness reductions in the second engagement leg 13 are reduced. The part 13b may be omitted.

The third groove 11c of the flange portion 11 may be omitted. According to such a structure, since the thickness of the flange part 11 becomes thick in the site | part from which the 3rd groove | channel 11c was omitted, the mechanical strength of the flange part 11 can be improved.

The flange portion 11, in addition to the second thin portion 24, has a first engagement leg portion 12 and the flange portion 11 in a planar view facing the surface 11F of the flange portion 11. You may also include the other thin part located between 11E of edges. According to such a structure, as the number of the thin parts of the flange part 11 increases, it becomes easy to deform | transform the flange part 11 into the shape suitable for the engagement of a fitting leg part and a drain hole.

The flange portion 11 does not have the second thin portion 24, while the first engagement leg portion 12 and the flange portion (in plan view facing the surface 11F of the flange portion 11). Another thin part located between the ends 11E of 11) may be included. According to this structure, since the flange part 11 has another thin part, it becomes easy to deform | transform the flange part 11 into the shape suitable for the shape of the engagement leg part and the drain hole.

At least one of the first groove 11a and the second groove 11b is not a groove that is concave toward the rear surface 11R from the surface 11F of the flange portion 11 but is the rear surface 11R of the flange portion 11. ) May be a groove concave toward the surface 11F. Even in such a configuration, the above-described flange portion 11 having a thin portion located between the engaging legs can obtain the same effect as in (1) described above.

The first thin portion 23 may not be the bottom of the first groove 11a extending along the X direction, or may be the bottom of each recess in a plurality of recesses positioned at intervals along the X direction. . Each recessed part may be a recessed part concave toward the front surface 11R at the surface 11F of the flange part 11, or a recessed part concave toward the surface 11F at the rear surface 11R. In this structure, one thin part is comprised by the some recessed part provided along the X direction.

The point is that the above-described thin part may have a configuration in which the average value of the thickness of the thin part is smaller than the average value of the thickness of the connecting part and functions as a resin hinge. For example, when one thin part consists of a some recessed part, the part thicker than a connection part may be included in the thin part, and the area | region which each recess part partitions in planar view facing the surface 11F is rectangular. You may have it and may have a circular shape. Even in such a structure, since the flange part 11 becomes easy to deform | transform from a thin part as a starting point, the effect equivalent to (1) mentioned above can be acquired.

The second thin portion 24 may not be the bottom portion of the second groove 11b extending along the X direction similarly to the first thin portion 23, and for example, a plurality of second thin portions 24 spaced apart along the X direction. In the recess, the bottom of each recess may be sufficient.

The first thin portion 23 may not be located substantially in the whole in the X direction, and may be located at least between the first connecting portion 21a and the second connecting portion 22a. That is, in the above-mentioned embodiment, the length of the 1st thin part 23 along the X direction is the same as the length along the X direction in the base end of the 1st engagement leg part 12, and is also the 1st connection part 21a. ) And the second connecting portion 22a. Even in such a configuration, if the thin portion is located at least between the engaging legs, the flange 11 is easily deformed into a shape suitable for engaging the engaging legs and the drain hole. That is, the effect equivalent to (1) mentioned above can be acquired.

The second thin portion 24 does not have to be located substantially in the entire X direction as with the first thin portion 23, and is located between the second connecting portion 22a and the end portion 11E of the flange portion 11. In this case, it may be located at least in part in the X direction.

The number of engaging leg portions of the drain plug 10 is not limited to the two described above, but may be three or more. Even in such a configuration, if the flange portion has a thin portion throughout the engaging legs, the same effect as in the above (1) can be obtained.

The mounting target of the drain plug 10 is not limited to the vehicle body panel constituting the rear gate, but may be, for example, the vehicle body panel constituting the trunk lid, the front door, the rear door, and the like. Even when the drain plug 10 is mounted on the vehicle body panel constituting such a door, the drain plug 10 has an effect equivalent to that when the drain plug 10 is mounted on the vehicle body panel constituting the rear gate.

The drain plug 10 may be used not only as a plug attached to a drain hole formed in the vehicle body panel, but also as a plug attached to a through hole formed in another plate member for purposes other than drainage, for example, a vent hole.

The technical idea derived from the said embodiment and modification is added.

<Book 1>

A flange portion covering at least a part of the through hole of the mounted portion;

A plug having a plurality of engaging legs extending from a rear surface of the flange portion and engaged with a peripheral edge portion of the through hole,

Each engaging leg portion extends at a separate position on the rear surface of the flange portion,

And the flange portion includes a connecting portion which is a portion to which the respective engaging legs are connected in the flange portion, and a thin portion thinner than the connecting portion and located at least between the connecting portions.

<Book 2>

A flange portion covering at least a part of the through hole of the mounted portion;

A plug having a plurality of engaging legs extending from a rear surface of the flange portion and engaged with a peripheral edge portion of the through hole,

Each engaging leg portion extends at a separate position on the rear surface of the flange portion,

The said flange part is a plug in which the average value of the thickness of the connection part which is the part which each said engagement leg part connects in the said flange part is thicker than the average value of the thickness between the said connection parts.

According to the above-mentioned bookkeeping, the flange portion tends to bend when the connecting portion is placed in the bent position. As a result, the flange portion is easily deformed into a shape suitable for engaging the circumferential edge portion and the engaging leg portion of the through hole, so that the circumferential edge of the drain hole in the state where the circumferential edge portion and the engaging leg portion of the drain hole are engaged. It is suppressed that a gap is formed between the portion and the flange portion, and further, that a gap is formed between the drainage hole and the flange portion.

10 drain plug 11 flange portion
11a: first groove 11b: second groove
11c: third groove 11d: recess
11E: End 11F: Surface
11R: Back side 12: 1st engagement leg part
13: second engagement leg portion 13a: engagement protrusion
13b: thickness reduction portion 21: first thick portion
21a: first connection portion 22: second thick portion
22a: 2nd connection part 23: 1st thin part
24: 2nd thin part 25: 3rd thick part
30, 40: body panel 30a, 40a: welded portion
31, 41: inner panel 31a, 41a: drain hole
31b, 41b: Mounted part 31b1, 41b1: Peripheral edge part
32, 42: outer panel

Claims (7)

A flange portion covering at least a part of the drainage hole of the mounted portion,
A drain plug extending from a rear surface of the flange portion and having a plurality of engaging legs engaged with a peripheral edge of the drain hole;
Each engaging leg portion extends at a separate position on the rear surface of the flange portion,
The flange portion includes a connecting portion which is a portion to which the respective engaging legs are connected in the flange portion, and a thin portion thinner than the connecting portion and located at least between the connecting portions,
And the thin portion is a bottom of the groove, wherein the groove extends along one direction.
delete The method according to claim 1,
The plurality of engaging legs comprises a first engaging legs,
The flange portion has a first connection portion that is a portion to which the first engagement leg portion connects in the flange portion,
The first engagement leg portion extends from the first connection portion toward the end portion of the flange portion, and when the first engagement leg portion is inserted into the drain hole, the first engagement leg portion and the flange portion are drained out. A drain plug characterized by sandwiching a peripheral edge portion of the hole.
delete The method according to claim 1 or 3,
And the flange portion has a concave portion leading to the drain hole at an end portion of the flange portion.
The method according to claim 1 or 3,
And the flange portion has a thin portion located between at least one of the connecting portions and an end portion of the flange portion in a plan view facing the rear surface of the flange portion.
The method according to claim 5,
And the flange portion has a thin portion located between at least one of the connecting portions and an end portion of the flange portion in a plan view facing the rear surface of the flange portion.

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