JP5307666B2 - Fastener - Google Patents

Description

  The present invention relates to a fastener that is inserted into and fixed to a mounting hole formed in, for example, an automobile panel.

  For example, when attaching a predetermined attachment member to a member to be attached such as a panel of an automobile, a fastener including a flange portion that engages with the front side of the attachment hole and a leg portion that engages with the back side of the attachment hole is used. Yes. In addition, when the mounting member is an electrical component such as a rear combination lamp, a soft material such as an elastic elastomer is arranged on the back side of the flange portion to prevent moisture from entering from the mounting hole, and this is placed on the front side of the mounting hole. In order to improve the sealing performance of the mounting hole, it is brought into close contact with the periphery.

  As a fastener provided with a soft material, in Patent Document 1 below, a screw insertion hole is formed in the center, a flange body that spreads in a disk shape with a constant thickness, and a two-color molding on the outer periphery of the back surface of the flange body A circular ring body (corresponding to “soft material”) formed integrally with the bottom, a bottomed cylindrical insert body (corresponding to “leg part”) erected from the back side of the flange body, and an outer periphery of the insert body A screw grommet having a plurality of chevron-shaped protrusions formed in the above is disclosed.

  Then, by inserting the screw grommet insert into the mounting hole, bringing the circular ring body on the back side of the flange body into contact with the front peripheral edge of the mounting hole, and inserting the screw into the insert through the screw insertion hole, The insert is pushed and spread, and the ridges provided on the outer periphery engage with the back side of the mounting hole, so that the screw grommet is attached to the mounting hole.

Japanese Utility Model Publication No. 4-35612

  Since the flange body in the screw grommet of Patent Document 1 is formed with a constant thickness and has relatively high rigidity, the circular ring body is stably formed. On the other hand, a flange body formed with a constant thickness is poor in flexibility, and is sufficient when there is variation in the thickness of the member in which the mounting hole is formed or when there is unevenness or inclination on the front edge of the mounting hole. In some cases, the grommet may be loose and not firmly fixed to the mounting hole, or a gap may be formed between the circular ring body and the surface of the mounting hole, resulting in a decrease in sealing performance.

  Accordingly, an object of the present invention is to stably and integrally form a soft material on the flange portion, sufficiently secure the flexibility of the flange portion, and can firmly fix the mounting hole without backlash, and to the mounting hole. An object of the present invention is to provide a fastener capable of maintaining sealing performance.

  In order to achieve the above object, the present invention provides a flange portion arranged on the front side of the mounting hole, a soft material that is integrally formed on the back surface side of the flange portion, and abuts on the front side periphery of the mounting hole, A leg portion that extends from the rear surface side of the flange portion and engages with the back side periphery of the mounting hole, and the flange portion is positioned on the outer periphery of the leg portion, and is positioned on the outer periphery of the thin portion. And the soft material is provided on a back surface side of the thick part of the flange part, and is provided at a position away from the outer periphery of the leg part, and the outer periphery of the thick part. Provided is a fastener characterized in that it is disposed in a portion closer to each other and is formed narrower than the same thick portion.

  Another aspect of the present invention is a flange portion disposed on the front side of the mounting hole, a soft material that is integrally formed on the back surface side of the flange portion, abuts on the front side periphery of the mounting hole, and the flange portion. A leg portion that extends from the back surface side and engages with the peripheral edge of the mounting hole; a pin that has a head portion that engages with a predetermined member and a shaft portion that extends from the head portion; A thin portion located on the outer periphery of the leg portion; a thick portion located on the outer periphery of the thin portion; and an opening through which the shaft portion of the pin is inserted. A pin housing that is provided on a rear surface side of the meat portion and away from the outer periphery of the leg portion, and the leg portion communicates with the opening of the flange portion and accommodates the shaft portion of the pin. A space and an engagement portion that engages with the shaft portion and holds the pin to prevent it from coming off. Providing a fastener, characterized in that there.

  In the present invention, it is preferable that the head portion of the pin has a pin flange portion that contacts the surface side of the flange portion.

  In the present invention, it is preferable that an outer diameter of the pin flange portion is larger than an outer diameter of the thin portion of the flange portion and smaller than an inner diameter of the soft material.

  In this invention, it is preferable that the said leg part has comprised the bottomed cylinder shape which has the said pin accommodation space.

  According to the present invention, by inserting the leg portion into the mounting hole, the soft material comes into contact with the front-side periphery of the mounting hole, and the leg portion engages with the back-side periphery of the mounting hole, and the clip is clipped into the mounting hole. Can be installed.

  The flange portion is provided with flexibility by the thin portion provided on the outer periphery of the leg portion, and the thickness of the member in which the mounting hole is formed varies with the soft material provided on the back surface side of the thick portion. Even if there is unevenness of the thickness, it is possible to attach the fastener without looseness to the mounting hole. Therefore, the sealing performance against the surface of the mounting hole can be improved.

  Also, when the soft material is integrally formed with the thick part of the flange, the soft material can be stably held by the rigidity of the thick part, and after the flange is formed, the soft material is subsequently formed. Since the temperature of the thick part is slowly lowered, the soft material to be injection molded next can be easily joined.

It is a perspective view which shows one Embodiment of the fastener of this invention. It is a perspective view at the time of seeing the grommet which comprises the fastener from the back surface side. It is sectional drawing of the grommet. It is sectional drawing of the state which attached the grommet to the attachment hole. It is explanatory drawing of the state which attached the attachment member to the to-be-attached member using the fastener of this invention. It is sectional drawing of the state which attached the grommet to the attachment hole of the to-be-attached member with variation in board thickness. It is explanatory drawing which shows other embodiment of the fastener of this invention.

  Hereinafter, with reference to FIGS. 1-6, one Embodiment of the fastener of this invention is described.

  As shown in FIG. 5, this fastener 10 attaches, for example, an electrical component such as a rear combination lamp or a mounting member 5 such as a cover member such as a garnish or a trim board to a mounted member 1 such as a panel of an automobile. In particular, it can be suitably used when a rear combination lamp or the like requiring a watertight structure is attached to the panel.

  As shown in FIG. 1, the fastener 10 in this embodiment has a grommet 20 that is inserted into and fixed to a mounting hole 3 formed in the mounted member 1, and further holds the grommet 20 to prevent it from coming off. In addition, a pin 40 that is engaged and fixed to the mounting member 5 is provided.

  First, the grommet 20 will be described. The grommet 20 is integrally formed on a flange portion 21 disposed on the front side of the mounting hole 3 formed in the mounted member 1 and on the back side of the flange portion 21 and abuts on the front side of the mounting hole 3. A soft material 35 and leg portions 30 that extend from the back side of the flange portion 21 and engage with the back side of the mounting hole 3 are provided.

  As shown in FIG. 1, the flange portion 21 extends long in a predetermined direction and has a long plate shape whose both ends in the length direction are rounded in an arc shape. At the center of the flange portion 21, both ends in the length direction are arc-shaped long holes, and an opening portion 22 through which a shaft portion 43 of the pin 40 described later is inserted is formed.

  Referring also to FIG. 3, the flange portion 21 is provided with a leg portion 30 extending from the rear peripheral edge of the long hole-shaped opening 22, and a predetermined distance from the front peripheral edge of the opening 22 toward the flange portion is extended. A deep recess 23 is widened. The concave portion 23 has a long groove shape having a circular arc shape on both ends similar to the opening portion 22 and has an inner diameter larger than the outer diameter of the leg portion 30. A predetermined range from the inner periphery of the opening of the flange portion 21 to the outer periphery of the leg portion is thinned by the concave portion 23 (see FIG. 3), and the thin portion 24 positioned on the outer periphery of the leg portion 30 is provided on the flange portion 21. The thick part 25 located in the outer periphery of 24 is formed. As described above, by providing the flange portion 21 with the thin portion 24 and the thick portion 25, moderate flexibility and rigidity are imparted to the flange portion 21. In addition, a tapered surface 26 is formed on the front side periphery of the thick portion 25 so that the thick portion 25 is gradually thinned outward.

  In addition, in this embodiment, although the thin part 24 and the thick part 25 were formed by providing the recessed part 23 in the surface side of the flange part 21, it is not limited to this aspect, For example, the cyclic | annular form surrounding the leg part 30 outer periphery The thin-walled portion 24 and the thick-walled portion 25 may be formed by providing concave grooves on the back surface side or the front surface side of the flange portion 21.

  On the other hand, the leg portion 30 is formed in a bottomed cylindrical shape including a peripheral wall extending from the back side periphery of the long hole-shaped opening portion 22 and a bottom wall connected to the tip thereof, and the inside thereof is the opening portion. 22 and a pin housing space 31 for housing the shaft portion 43 of the pin 40 (see FIG. 5).

  In addition, a pair of engaging portions 32, 32 that form ridges extending along the long side direction are provided on the inner surface on the long side of the peripheral wall of the leg portion 30 so as to face each other (see FIG. 3). These are fitted into an engaging recess 43a, which will be described later, of the pin 40, so that the pin 40 is slidably held. On the other hand, a pair of engaging claws 33, 33 project from the outer surface on the long side of the peripheral wall of the leg portion 30, and these engage with the rear peripheral edge of the mounting hole 3 of the mounted member 1. (See FIG. 5).

  In the case of this embodiment, the soft material 35 disposed on the back side of the flange portion 21 extends long in a predetermined direction corresponding to the outer peripheral shape of the flange portion 21, and is elongated with arc-shaped ends at both ends in the length direction. It has a ring shape.

  The soft material 35 is provided on the back side of the thick portion 25 of the flange portion 21 and at a position away from the outer periphery of the leg portion 30. As a result, when the fastener 10 is inserted and fixed in the mounting hole 3 and the soft material 35 comes into contact with the front peripheral edge of the mounting hole 3, as shown in FIG. 4, between the leg portion 30 and the soft material 35. A predetermined gap S is formed, and the flange portion 21 is easily bent and deformed.

  Further, the soft material 35 in this embodiment is disposed in a portion near the outer periphery of the thick portion 25, and as shown in FIG. 3, the width W1 thereof is the thick portion 25 of the flange portion 21. It is formed narrower than the width W2.

  The soft material 35 is made of an elastomer such as urethane rubber, silicone rubber, or fluorine rubber, and is integrally formed on the back surface side of the flange portion 21 by insert molding or two-color molding. The elastomer is preferably a material having adhesiveness to the flange portion 21 made of synthetic resin.

  Next, the pin 40 retained by the grommet 20 will be described. Referring to FIGS. 1 and 5, the pin 40 includes a head 41 that engages with a frame-shaped mounting base 7 formed on the mounting member 5 such as a rear combination lamp, and extends from the back side of the head 41. And a shaft portion 43 to be used.

  The head portion 41 is connected to a neck portion 41a inserted into a slot 7a formed at the bottom portion of the mounting base 7 and an upper end of the neck portion 41a, and is attached to a disk-like attachment that engages with a front peripheral edge of the slot 7a. There is a flange portion 41b and a disk-shaped pin flange portion 41c that is connected to the lower end of the neck portion 41a, engages with the rear peripheral edge of the slot 7a, and contacts the surface side of the flange portion 21 of the grommet 20. doing. As shown in FIG. 5, the outer diameter D1 of the pin flange portion 41c is larger than the outer diameter D2 of the thin portion 24 of the flange portion 21, and smaller than the inner diameter D3 of the soft material 35.

  The shaft portion 43 extends in a columnar shape with a predetermined length from the back center of the pin flange portion 41c, and an engagement recess 43a constricted in a predetermined shape is formed in the middle of the axial direction. A pair of engaging portions 32, 32 that form the protrusions of the grommet 20 are fitted in the engaging recess 43a, and a lower diameter enlarged portion 43b is engaged with the engaging portions 32, 32, so that the grommet The pins 40 are retained in the 20 leg portions 30. In addition, since the leg part 30 of the grommet 20 has comprised the long box shape corresponding to the long hole-shaped opening part 22 formed in the flange part 21, the column-shaped axial part 43 is slidably hold | maintained. Thus, the position of the mounting member 5 such as a rear combination lamp can be adjusted.

  Next, the usage method of the fastener 10 which consists of the said structure is demonstrated.

  First, the neck portion 41a of the pin 40 is inserted into the slot 7a of the mounting base 7 formed on the mounting member 5 such as a rear combination lamp, and the mounting flange portion 41b and the pin flange portion 41c are engaged with the front and back peripheral edges of the slot 7a. Then, the head 41 of the pin 40 is attached to the mounting base 7.

  Further, the grommet 20 is also attached to the mounting hole 3 formed in the mounted member 1 such as a panel. That is, by inserting the leg portion 30 of the grommet 20 from the front side into the mounting hole 3 having an arc-shaped long hole shape at both ends, it is arranged on the back surface side of the flange portion 21 on the front peripheral edge of the mounting hole 3. The soft material 35 elastically abuts, and the engagement step portions 33a and 33a of the pair of engagement claws 33 and 33 of the leg portion 30 are engaged with the rear peripheral edge of the attachment hole 3, respectively. The grommet 20 is attached to 3 (refer FIG. 4).

  At this time, the plate thickness T (see FIG. 4) of the mounted member 1 is the distance L between the lower end of the soft material 35 and the engaging portion of the engaging step portion 33a of the engaging claw 33 of the leg portion 30 (FIG. 3). If it is larger than (see), the flange portion 21 is deformed to absorb the thickness.

  And since the flange part 21 in this fastener 10 is provided with flexibility by the thin part 24, when the plate thickness T of the attached member 1 is thick, the soft material 35 is crushed and contracted and deformed. The flange portion 21 is smoothly bent and deformed so that the peripheral edge of the flange portion 21 moves away from the front side of the mounting hole 3. The grommet 20 can be firmly attached.

  In addition, as shown in FIG. 6, even if the plate thickness T of the mounted member 1 in which the mounting hole 3 is formed varies or the peripheral edge of the mounting hole 3 is uneven, When the flexible flange portion 21 is bent and deformed in combination with the soft material 35, the thickness variation and unevenness can be absorbed, and the grommet 20 can be attached to the attachment hole 3 without looseness.

  Furthermore, even if the plate thickness variation or plate thickness variation of the mounted member 1 as described above, or even if the front peripheral edge of the mounting hole 3 has irregularities or inclinations, the flange portion 21 bends to fit them. The soft material 35 on the back side of the flange portion 21 is deformed so as to be in intimate contact with the front side periphery of the mounting hole 3, so that the sealing performance with respect to the surface of the mounting hole 3 can be improved.

  In this embodiment, the soft material 35 is disposed near the outer periphery of the thick portion 25 of the flange portion 21, and its width W 1 is greater than the width W 2 of the thick portion 25 of the flange portion 21. Is also narrowly formed (see FIG. 3). Therefore, as shown in FIG. 4, when the leg portion 30 engages with the back side of the mounting hole 3 and the soft material 35 comes into contact with the front side of the mounting hole 3, and the flange portion 21 bends with the soft material 35 as a fulcrum. Moreover, since the fulcrum is on the outer peripheral side of the flange portion 21, it is possible to secure a longer distance between the outer periphery of the leg portion 30 and the soft material 35 and to make the flange portion 21 more easily deformed.

  Furthermore, in this embodiment, since the leg portion 30 has a bottomed cylindrical shape having the pin accommodating space 31, it is possible to prevent moisture from entering from the outside of the leg portion 30 as described above. Such an electric component such as a rear combination lamp is suitable for fixing to the mounting hole 3.

  Further, in this fastener 10, the soft material 35 is provided on the back side of the thick portion 25 of the flange portion 21 and at a position away from the outer periphery of the leg portion 30. Therefore, when the soft material 35 is integrally formed on the thick portion 25 of the flange portion 21 by insert molding or the like, the soft material 35 can be stably held by the rigidity of the thick portion 25. Further, when the soft material 35 is subsequently formed after the flange portion 21 is formed by two-color molding or the like, the temperature of the thick portion 25 is slowly decreased, so that the soft material 35 to be injection-molded next can be easily joined. be able to.

  After the grommet 20 is attached to the attachment hole 3 of the member 1 to be attached as described above, the shaft portion 43 of the pin 40 attached to the attachment member 5 passes through the opening 22 of the grommet 20 and the pin in the leg portion 30. Insert into the accommodation space 31. Then, the engaging portions 32, 32 of the protrusions in the leg portion 30 are fitted into the engaging recesses 43a of the pin 40, respectively, and the pin flange portion 41c of the pin 40 is located on the periphery of the recess 23 on the surface side of the flange portion 21. The pin 40 is held by the grommet 20 so as not to come off. As a result, as shown in FIG. 5, the attachment member 5 can be attached to the attached member 1 via the fastener 10.

  Thus, in this embodiment, the pin 40 is further added to the grommet 20 as the fastener 10, so that the head 41 of the pin 40 is engaged with the mounting member 5 such as a rear combination lamp, The shaft portion 43 of the pin 40 is inserted into the leg portion 30 and accommodated in the pin accommodating space 31, and the shaft portion 43 is engaged with the engaging portion 32 of the leg portion 30 so as to prevent the pin from being detached. The attachment member 5 can be attached to the attached member 1 formed with 3 via the pin 40. In this case, even if the leg portion 30 is inclined due to the insertion posture of the pin 40, the flange portion 21 is easily bent, so that the soft material 35 is prevented from being lifted from the surface of the mounted member 1, and its sealing property Can be maintained.

  In this embodiment, the head portion 41 of the pin 40 has a pin flange portion 41 c that comes into contact with the front side of the flange portion 21 of the grommet 20. Therefore, as shown in FIG. 5, since the flange portion 21 can be pressed by the pin flange portion 41c, the engagement of the engagement claw 33 is insufficient when the grommet 20 is assembled to the mounted member 1 and the Even when it is hanging, by inserting the pin 40 into the grommet 20 and pressing it strongly, the soft material 35 is compressed and the flange portion is bent, and the engaging step portion 33a of the engaging claw 33 of the grommet 20 is obtained. Can be reliably engaged with the rear side periphery of the mounting hole 3.

Further, in this embodiment, as shown in FIG. 5, the outer diameter D1 of the pin flange portion 41c of the pin 40 is larger than the outer diameter D2 of the thin portion 24 of the flange portion 21 and larger than the inner diameter D3 of the soft material 35. Is also formed small. As a result, when the pin 40 is held on the leg portion 30, the pin flange portion 41 c of the pin 40 comes into contact with the surface side of the thick portion 25 of the flange portion 21, so that the soft material 35 can be more effectively pressed. . Further, since the pressing force of the pin 40 acts so as to incline the thick portion 25 toward the attached member 1 with the soft material 35 as a fulcrum, the flange portion 21 is effectively bent, and the half of the engaging claw 33 is formed. The hanging state can be corrected more reliably.

  FIG. 7 shows another embodiment of the fastener of the present invention. Note that substantially the same parts as those of the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The fastener 10A of this embodiment differs in the structure of a leg part compared with the fastener 10 of the said embodiment. That is, the leg portion 30 </ b> A of the fastener 10 </ b> A has a columnar stem portion 36 extending from the center of the back surface of the disc-shaped flange portion 21, and a foot-like shape from the tip of the stem portion 36 toward the flange portion 21. And a pair of engagement pieces 37, 37 that engage with the periphery on the back side of the mounting hole 3. A circular recess 23 is formed at the center of the surface of the flange portion 21, whereby a thin portion 24 and a thick portion 25 are formed in the flange portion 21.

  Further, by providing the thin portion 24 and the thick portion 25 also with the fastener 10A in this embodiment, appropriate flexibility and rigidity can be imparted to the flange portion 21, so it can cope with plate thickness fluctuations. Thus, it is possible to obtain the same effects as the fastener 10 of the above-described embodiment, such as attaching to the attachment hole 3 without backlash or improving the sealing performance of the attachment hole 3.

3 Mounting hole 10, 10A Fastener 21 Flange part 22 Opening part 24 Thin part 25 Thick part 30, 30A Leg part 31 Pin accommodation space 32, 32 Engagement part 35 Soft material 40 Pin 41 Head 41c Pin flange part 43 Axis Part

Claims (5)

A flange portion disposed on the front side of the mounting hole, a single piece formed on the back surface side of the flange portion, a soft material that contacts the front side periphery of the mounting hole, and extended from the back surface side of the flange portion, A leg portion that engages with the back side periphery of the mounting hole,
The flange portion has a thin portion located on the outer periphery of the leg portion, and a thick portion located on the outer periphery of the thin portion,
The soft material is on the back side of the thick part of the flange part, provided at a position away from the outer periphery of the leg part, and disposed at a portion near the outer periphery of the thick part, and A fastener characterized by being formed narrower than the same thick portion. A flange portion disposed on the front side of the mounting hole, a single piece formed on the back surface side of the flange portion, a soft material that contacts the front side periphery of the mounting hole, and extended from the back surface side of the flange portion, A leg portion that engages with the back side periphery of the mounting hole, a head portion that engages with a predetermined member, and a pin that has a shaft portion extending from the head portion,
The flange portion has a thin portion positioned on the outer periphery of the leg portion, a thick portion positioned on the outer periphery of the thin portion, and an opening through which the shaft portion of the pin is inserted.
The soft material is on the back side of the thick part of the flange part, and is provided at a position away from the outer periphery of the leg part,
The leg portion communicates with the opening portion of the flange portion, and has a pin accommodating space for accommodating the shaft portion of the pin, and an engaging portion for engaging with the shaft portion and retaining the pin. A fastener characterized by   The fastener according to claim 2, wherein the head portion of the pin has a pin flange portion that abuts on a surface side of the flange portion.   The fastener according to claim 3, wherein an outer diameter of the pin flange portion is larger than an outer diameter of a thin portion of the flange portion and smaller than an inner diameter of the soft material. The said leg part is a fastener as described in any one of Claims 2-4 which has comprised the bottomed cylinder shape which has the said pin accommodation space.

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