JP2014019404A - Foamable member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foamable member which easily maintains a shape of a body portion in a deformed state.SOLUTION: A body portion 11, by being curved in a mode that a first outer surface 11a is set as an outer peripheral surface, is formed into a deformed state in which a part of the first outer surface 11a and a part of a second outer surface 11b face each other. The body portion 11 has a slit portion 12 by which a part of the body portion can be erected. A part of the body portion 11 which is erected on the first outer surface 11a side is inserted as an attaching portion 13 into an insertion hole 14 which the body portion 11 has. The body portion 11 has a regulating portion which regulates relative movement between a part of the first outer surface 11a and a part of the second outer surface 11b facing the first outer surface, in a deformed state. The regulating portion is equipped with: a recess 15 positioned on the opposite side to the insertion hole 14 side with the slit portion 12 as a reference; and a locking portion 16 which is constituted by the body portion 11 positioned on the insertion hole 14 side with the slit portion 12 as a reference. The locking portion 16 is arranged between a first wall portion 15a and a second wall portion 15b which the recess 15 has.

Description

  The present invention relates to a foamable member having a main body part that is attached to a constituent member constituting a hollow structure and is foamed and cured by heating to form a foam.

  When the foam is disposed in the internal space of the hollow structure, a foamable member attached to a constituent member constituting the hollow structure is used. The foamable member has a main body that forms a foam by being foamed and cured by being heated. As this type of foamable member, one having a predetermined shape by bending or bending a main body is known (for example, see Patent Document 1). The foamable member of Patent Document 1 has a configuration in which a part of the main body is raised by using a cut portion formed in the main body. A part of the main body portion erected in this way serves as an attachment portion for attachment to a constituent member constituting the hollow structure.

JP 2011-161642 A

  The attachment portion of the foamable member can be easily formed by raising a part of the main body after the cut portion is formed in the main body. On the other hand, according to the structure in which the insertion hole for inserting the attachment portion is formed in the main body portion, and the attachment portion is inserted into the insertion hole when the main body portion is bent or bent, the deformed main body portion It becomes possible to hold the shape of However, in order to maintain the shape of the deformed main body, for example, the flexibility of the main body and the design of the dimensions of the insertion hole and the attachment may be reduced. In this respect, the main body is designed in consideration of, for example, the volume of the foam, the ease of insertion of the mounting portion with respect to the insertion hole, and so on. There is a limit to keeping the shape.

  This invention is made | formed in view of such a situation, The objective is to provide the foamable member which can hold | maintain the shape of the main-body part made into the deformation | transformation state easily.

  In order to achieve the above object, the foamable member of the invention according to claim 1 is attached to a constituent member constituting a hollow structure, and is heated and foamed and cured to form a foam. The main body portion has a first outer surface and a second outer surface located on the back surface side of the first outer surface, the first outer surface is an outer peripheral surface, and the second outer surface. By bending or bending the outer surface as an inner peripheral surface, a part of the first outer surface and a part of the second outer surface are brought into a deformed state. The main body portion that has a notch portion that can stand up with respect to the first outer surface is configured as a mounting portion that is attached to the constituent member, and the main body portion is mounted in the deformed state. The body has an insertion hole into which the body is inserted, In serial deformed state and summarized in that a regulating portion for regulating the relative movement of a part of a portion between the second outer surface facing the portion of the first external surface of said first outer surface.

  In this invention, it has a control part which controls relative movement of a part of the 1st outer surface and a part of the 2nd outer surface facing a part of the 1st outer surface in a deformed state. Therefore, in addition to the elasticity of the main body part and the insertion of the attachment part into the insertion hole, the deformation state of the main body part can also be held by the restricting part.

  According to a second aspect of the present invention, in the foamable member according to the first aspect, in the state before the main body portion is deformed, the restricting portion is opposite to the insertion hole side with respect to the notched portion. A first wall portion and a second wall portion of the concave portion in the deformed state, and a concave portion located on the insertion hole side with respect to the cut portion. The gist of the invention is that the engaging portion is disposed between the two.

  According to a third aspect of the present invention, in the foamable member according to the first aspect, in the state before the main body portion is deformed, the restricting portion is opposite to the insertion hole side with respect to the cut portion. And a locking portion positioned on the insertion hole side with respect to the cut portion, and the protruding portion is configured to be inserted into the locking portion in the deformed state. And

As described in the second and third aspects, the restricting portion can be configured.
According to a fourth aspect of the present invention, in the foamable member according to any one of the first to third aspects, the attachment portion projects from the insertion hole to the first outer surface side in the deformed state. And a base that connects the head to the main body, and the cut-out portion is characterized in that the head has a shape positioned on the insertion hole side with respect to the base.

  According to a fifth aspect of the present invention, in the foamable member according to any one of the first to third aspects, the attachment portion projects from the insertion hole to the first outer surface side in the deformed state. And a base that connects the head to the main body, and the cut portion has a shape in which the head is located on the side opposite to the insertion hole side with respect to the base. Is the gist.

  A sixth aspect of the present invention is the foamable member according to any one of the first to third aspects, wherein the attachment portion includes a first attachment portion and a second notch formed by a first notch portion. A second mounting portion formed by a portion, wherein the first mounting portion includes a first head projecting from the insertion hole toward the first outer surface in the deformed state, and the first head. A first base connected to the main body, and the second mounting portion includes a second head projecting from the insertion hole toward the first outer surface in the deformed state, and the second head A second base connected to the main body, wherein the first notch has a shape in which the first head is positioned on the insertion hole side with respect to the first base, and the second notch is The second head has a shape positioned on the side opposite to the insertion hole side with respect to the second base. The the gist.

The gist of the invention described in claim 7 is that, in the foamable member described in claim 6, the first cut portion and the second cut portion are continuous.
As described in the above fourth to seventh aspects, a cut portion can be formed in the main body portion, and an attachment portion can be formed from the cut portion.

  ADVANTAGE OF THE INVENTION According to this invention, the foamable member which can hold | maintain the shape of the main-body part made into the deformed state easily is provided.

(A) is a perspective view which shows the foamable member of embodiment, (b) is a perspective view which expands and shows a part of foamable member. The perspective view which shows the foamable member made into the deformation | transformation state. (A) is a front view which shows the foamable member of the state attached to a structural member, (b) is the left view of (a), (c) is the right view of (a). (A) is a fragmentary sectional view which shows the foamable member arrange | positioned in the hollow structure, (b) is sectional drawing which shows the hollow structure in which the foam was formed. (A) And (b) is a top view which shows the example of a change of a notch part. (A) is a perspective view which shows the example of a change of a foamable member, (b) is a perspective view which shows the foamable member made into the deformation | transformation state. (A) is a perspective view which shows the example of a change of a foamable member, (b) is a perspective view which shows the foamable member made into the deformation | transformation state. (A) is a perspective view which shows the example of a change of a foamable member, (b) is a perspective view which shows the foamable member made into the deformation | transformation state, (c) is a left view which shows the foamable member made into the deformation state.

An embodiment embodying the present invention will be described in detail with reference to FIGS.
As shown to Fig.1 (a), the foamable member of this embodiment is comprised from the main-body part 11 which has the 1st outer surface 11a and the 2nd outer surface 11b located in the back surface side of the 1st outer surface 11a. The main body 11 is formed of a foamable material that forms a foam by being foamed and cured by being heated. The foamable member of the present embodiment is used for the purpose of forming a foam in the internal space by being heated after being disposed in the internal space of the hollow structure that constitutes a part of the vehicle.

  The main body 11 is configured to be bendable in such a manner that the first outer surface 11a is an outer peripheral surface and the second outer surface 11b is an inner peripheral surface as indicated by arrows in FIG. As shown by a two-dot chain line in FIG. 1B, the main body 11 has a cut portion 12 that allows a part of the main body 11 to stand with respect to the first outer surface 11a. A part of the main body part 11 erected by the notch part 12 is configured as an attachment part 13 for attaching the main body part 11 to the first panel constituting the hollow structure. The cut portion 12 of the present embodiment includes a first cut portion 21 that forms the first attachment portion 31 and a second cut portion 22 that forms the second attachment portion 32.

  As shown in FIG. 1A, the main body 11 has an insertion hole 14 that passes through the first outer surface 11a and the second outer surface 11b. The first attachment portion 31 and the second attachment portion 32 shown in FIG. 1B are inserted into the insertion hole 14. The first attachment portion 31 connects the first head portion 31 a that protrudes toward the first outer surface 11 a side when inserted into the insertion hole 14 from the second outer surface 11 b side, and the first head portion 31 a to the main body portion 11. And a first base 31b. Similarly to the first attachment portion 31, the second attachment portion 32 has a second head portion 32a and a second base portion 32b. As shown to Fig.1 (a), the 1st notch part 21 has comprised the shape where the 1st head 31a is located in the insertion hole 14 side with respect to the 1st base 31b. The second notch 22 has a shape in which the second head 32a is located on the opposite side of the insertion hole 14 with respect to the second base 32b. In the present embodiment, the first cut portion 21 and the second cut portion 22 are continuous.

  In the main body 11, a recess 15 is formed at a position opposite to the insertion hole 14 side with respect to the notch 12. A locking portion 16 constituted by the main body portion 11 is locked to the recess 15. The locking portion 16 is located on the insertion hole 14 side with the cut portion 12 as a reference. More specifically, the recess 15 has a first wall 15a and a second wall 15b that is separated from the first wall 15a, and an inner back surface is provided between the first wall 15a and the second wall 15b. Is formed. A locking portion 16 can be disposed between the first wall portion 15a and the second wall portion 15b. Each of the first wall portion 15a and the second wall portion 15b has a first outer surface 11a and a second outer surface 11b.

  A support portion 17 that supports the wall portions 15a and 15b in the state where the locking portion 16 is disposed between the first wall portion 15a and the second wall portion 15b is provided on the cut portion 12 side of the locking portion 16. Is formed. The support portion 17 includes a first support portion 17a that supports the first wall portion 15a and a second support portion 17b that supports the second wall portion 15b. Each support part 17a, 17b protrudes in a direction different from the direction in which the locking part 16 and the recess 15 are continuous. In this embodiment, since the main body part 11 has a shape having a longitudinal direction, the support parts 17 a and 17 b protrude in a direction (width direction) different from the longitudinal direction of the main body part 11.

  The foamable material constituting the main body 11 contains a base material, a foaming agent, and a crosslinking agent. The foamable material can contain a filler, a plasticizer and the like as necessary. Examples of the substrate include synthetic resins, elastomers, and rubbers. Examples of the synthetic resin include polyolefin, epoxy resin, phenol resin, urethane resin, acrylic resin, styrene resin, EVA (ethylene / vinyl acetate copolymer), and the like. Examples of the elastomer include RB (polybutadiene elastomer), SBS (styrene / butadiene / styrene block copolymer), SIS (styrene / isoprene / styrene block copolymer), SEBS (styrene / ethylene / butylene / styrene block copolymer) and the like. Can be mentioned. As rubber, NR (natural rubber), SBR (styrene / butadiene rubber), BR (butadiene rubber), NBR (nitrile rubber), CR (chloroprene rubber), IR (isoprene rubber), IIR (butyl rubber), EPDM (ethylene) And propylene diene terpolymer), UR (urethane rubber), ENR (epoxidized natural rubber), EPM (ethylene / propylene rubber), and the like. Examples of the foaming agent include azodicarbonamide and dinitropentamethylenetetramine. Examples of the crosslinking agent include well-known dimethylurea and dicyandiamide. Examples of the filler include calcium carbonate, barium sulfate, ferrite, and silica.

The main body 11 can be formed by appropriately combining, for example, molding methods such as extrusion molding and injection molding, and processing methods such as punching and cutting.
Next, the foamable member attached to the hollow structure (the main body 11 in a deformed state) will be described in detail.

  As shown in FIGS. 2 and 3A to 3C, the main body 11 is curved in such a manner that the first outer surface 11a is an outer peripheral surface and the second outer surface 11b is an inner peripheral surface. Thus, the first outer surface portion 41a and the second outer surface portion 41b face each other in a deformed state. In the deformed state, the attachment portion 13 is inserted into the insertion hole 14 and the locking portion 16 is locked to the recess 15. As shown in FIG. 3 (a), when the attachment portion 13 is inserted into the insertion hole 14, the head portions 31a and 32a are arranged so as to be separated from each other toward the distal end side. As shown in FIG.3 (b), each wall part 15a, 15b is supported by each support part 17a, 17b. The deformed main body 11 has an annular shape as a whole.

  In the main body 11, the relative movement between the first outer surface portion 41 a and the second outer surface portion 41 b facing the first outer surface portion 41 a locks the locking portion 16 to the recess 15, and each support. It is regulated by the support of the wall portions 15a and 15b to the portions 17a and 17b. That is, the concave portion 15, the locking portion 16, and the support portions 17a and 17b are configured as restricting portions that restrict relative movement between the first outer surface portion 41a and the second outer surface portion 41b.

Then, the usage method of a foamable member is demonstrated.
As shown to Fig.3 (a)-(c), the 1st panel 51 which attaches the main-body part 11 is penetrated by the attachment hole 51a. The main body 11 is attached to the first panel 51 by inserting the attachment 13 into the attachment hole 51a. Specifically, as shown in FIG. 3A, in the main body 11 before being attached to the first panel 51, the distal end side of the first head portion 31 a and the distal end side of the second head portion 32 a are in the circumferential direction of the main body portion 11. Separated at C. That is, in the overall shape of the attachment portion 13, the dimension along the circumferential direction C on the distal end side of the attachment portion 13 is formed to be larger than the proximal end side of the attachment portion 13. On the other hand, the mounting hole 51a of the first panel 51 has a portion having an inner diameter smaller than the dimension along the circumferential direction C at the tip of the mounting portion 13 (the heads 31a and 32a).

  In order to insert the attachment portion 13 into the attachment hole 51a, first, the attachment portion 13 or the main body portion 11 is elastically deformed so that the distal ends of the first head portion 31a and the second head portion 32a are brought closer. For example, as shown by a two-dot chain line in FIG. 3A, the distal end side of the second head portion 32a is made to be the distal end of the first head portion 31a by elastically deforming the annular portion of the main body portion 11 to reduce the diameter. Can be approached to the side. With the dimensions in the circumferential direction C on the distal end side of the mounting portion 13 reduced in this manner, the mounting portion 13 is inserted into the mounting hole 51a, and the main body portion 11 is restored to the shape shown by the solid line in FIG. . As a result of such an attachment operation, as shown in FIG. 4A, the attachment portion 13 is locked to the attachment hole 51a. As a result, the attachment portion 13 is prevented from coming out of the attachment hole 51a. In addition, in the mounting hole 51a, the dimension along the axial direction A of the main body 11 shown in FIGS. 3B and 3C is appropriately set to a dimension in which the mounting part 13 can be inserted.

  As shown to Fig.4 (a), the hollow structure 53 is formed by joining the 2nd panel 52 to the 1st panel 51 to which the main-body part 11 was attached. Thus, the hollow structure 53 in which the main body 11 (foamable member) is arranged in the internal space is heated by, for example, a drying process after electrodeposition coating. At this time, the main body 11 is heated and foamed and cured, and a foam 61 is formed in the internal space of the hollow structure 53 as shown in FIG. In the present embodiment, the foam 61 is filled so as to close a predetermined cross section of the hollow structure 53. In the hollow structure 53 filled with the foam 61, its strength, rigidity, vibration damping, sound insulation and the like are enhanced.

Next, the operation of the foamable member will be described.
2 and FIGS. 3A to 3C are held by the deformed main body 11 by its own elasticity and insertion of the mounting portion 13 into the insertion hole 14. At this time, in this embodiment, the locking portion 16 is locked to the recess 15 and the walls 15a and 15b are supported by the support portions 17a and 17b. By locking the locking portion 16 in the recess 15, for example, the relative movement along the axial direction A between the first outer surface portion 41 a and the second outer surface portion 41 b is restricted. Further, by supporting the walls 15a and 15b on the support portions 17a and 17b, for example, the relative movement along the circumferential direction C between the first outer surface portion 41a and the second outer surface portion 41b can be performed. Be regulated. Thus, the main body 11 has a restricting portion that restricts relative movement between the first outer surface portion 41a and the second outer surface portion 41b. According to such a main body part 11, in addition to the elasticity of the main body part 11 and the insertion of the attachment part 13 into the insertion hole 14, the deformed state of the main body part 11 can be held also by the restricting part.

The effects exhibited by the above-described embodiment will be described below.
(1) The main body 11 is in a deformed state in which the first outer surface portion 41a and the second outer surface portion 41b face each other. Since the main body portion 11 has a restricting portion that restricts relative movement between the first outer surface portion 41a and the second outer surface portion 41b, the shape of the deformed main body portion 11 is maintained. It becomes easy. Thereby, for example, it becomes easy to ensure a degree of freedom in designing the elasticity of the main body part 11 and the dimensions of the insertion hole 14 and the attachment part 13. Therefore, for example, a more suitable foam 61 can be formed, and a design that considers insertion of the attachment portion 13 into the insertion hole 14 and attachment to the first panel 51 is facilitated.

  (2) The restricting portion includes a concave portion 15 and a locking portion 16 locked to the concave portion 15. The recess 15 is positioned on the opposite side of the insertion hole 14 with respect to the notch 12 in a state before the main body 11 is deformed. The locking portion 16 is configured by the main body portion 11 located on the insertion hole 14 side with the cutout portion 12 as a reference before the main body portion 11 is deformed. And in the deformation | transformation state of the main-body part 11, the latching | locking part 16 is arrange | positioned between each wall part 15a, 15b. According to this configuration, for example, when the relative movement along the axial direction A between the first outer surface portion 41a and the second outer surface portion 41b is restricted, the main body portion 11 is in a deformed state. The shape is easily retained.

  (3) The restricting portion includes support portions 17a and 17b that support the wall portions 15a and 15b in a state where the locking portions 16 are disposed on the wall portions 15a and 15b. According to this configuration, for example, when the relative movement along the circumferential direction C between the first outer surface portion 41a and the second outer surface portion 41b is restricted, the main body portion 11 is in a deformed state. The shape is easily retained. Accordingly, in the deformed state, for example, the heads 31a and 32a are prevented from coming out from the insertion hole 14.

  (4) The first cut portion 21 has a shape in which the first head portion 31a is positioned on the insertion hole 14 side with respect to the first base portion 31b, and the second cut portion 22 has the second head portion 32a having the second base portion. It has a shape located on the opposite side of the insertion hole 14 side with respect to 32b. Since the main body portion 11 has the cut portions 21 and 22 as described above, the attachment portions 31 and 32 can be easily formed.

  In addition, the mounting portions 13 and 32 can be locked in the mounting holes 51a by using the above-described mounting portions 13 by utilizing elastic deformation and restoration in which the head ends of the head portions 31a and 32a approach each other. For this reason, for example, it is possible to omit separately forming an attachment locking portion to be engaged with the attachment hole 51a in the attachment portion 13. In addition, when the attachment latching | locking part is formed in at least one of each head 31a and 32a, it is possible to raise the latching force with respect to the attachment hole 51a of the attachment part 13. As shown in FIG. For example, as shown by a two-dot chain line in FIG. 3 (b), when the first head portion 31a has the attachment locking portion 31c, the tip end side of the first head portion 31a extends along the axial direction A to the second head portion. The attachment locking portion 31c can be locked to the mounting hole 51a by elastically deforming toward the 32a side and inserting the first head 31a into the mounting hole 51a.

  (5) As the mounting portion 13 is formed by raising a part of the main body 11, an opening is formed in a part of the main body 11. The main body 11 around the opening is more easily deformed than other parts. For example, when the main body 11 is in a deformed state or when an external force is applied to the deformed main body 11, the main body 11 around the opening is excessively deformed so that the main body 11 is not intended. It becomes easy to become. In particular, when the first attachment portion 31 and the second attachment portion 32 are formed in the positional relationship described in the above (4) and the attachment portions 31 and 32 are held by the insertion holes 14, the first base portion 31b and the second base portion. The balance of the force applied to the main body 11 located in the vicinity of 32b may be lost and the main body 11 may be twisted. In this regard, by providing the restricting portion described in (1) above, when the main body portion 11 is in a deformed state or when an external force is applied to the deformed main body portion 11, the twist of the main body portion 11 is suppressed. Is possible.

  (6) Since the 1st notch part 21 and the 2nd notch part 22 are continuing, each notch part 21 and 22 can be formed by pressing the continuous cutting blade against the main-body part 11, for example. For this reason, the dispersion | variation in the positional relationship of each notch part 21 and 22 can be suppressed.

(Example of change)
The above embodiment may be modified as follows.
The first cut portion 21 and the second cut portion 22 are continuous, but the first cut portion 21 and the second cut portion 22 are discontinuously arranged as shown in FIGS. 5A and 5B, for example. May be.

  -The shape and number of attachment parts 13 can be changed suitably. For example, as shown in FIGS. 6A and 6B, the second cut portion 22 may be omitted, and the first cut portion 21 may be changed so that only the first attachment portion 31 is formed. As shown in FIGS. 7A and 7B, the first cut portion 21 may be omitted, and the second cut portion 22 may be changed so that only the second attachment portion 32 is formed. Furthermore, the main body portion 11 may be changed to a main body portion having a cut portion so that three or more attachment portions are formed.

-The main-body part 11 may be changed into the aspect which has a some attachment part corresponding to the 1st panel which has a some attachment hole.
In the main body 11 shown in FIG. 6 and FIG. 7, an insertion hole locking portion that locks into the insertion hole 14 is formed in the mounting portion 13 or attached in order to suppress the removal of the mounting portion 13 from the insertion hole 14. The part 13 can be configured to be press-fitted into the insertion hole 14. Even in this case, the main body 11 has a restricting portion that restricts relative movement between the first outer surface portion 41a and the second outer surface portion 41b, so that the shape of the deformed main body portion 11 is reached. Becomes easier to hold.

  -Each said support part 17a, 17b may be abbreviate | omitted. Even in this case, the relative relationship between the first outer surface portion 41a and the second outer surface portion 41b is caused by the relationship between the concave portion 15 described in the above (2) and the locking portion 16 locked to the concave portion 15. A restricting unit that restricts movement is configured.

  -The said control part can be changed into the control part shown in FIG. The main body 11 shown in FIG. 8A includes a protrusion 18 positioned on the opposite side of the insertion hole 14 with respect to the notch 12 and a locking position positioned on the insertion hole 14 with reference to the notch 12. Part 19. As shown in FIGS. 8B and 8C, the protrusion 18 is inserted into the locking portion 19 in the deformed body portion 11. The convex portion 18 and the locking portion 19 are configured as a restricting portion that restricts relative movement between the first outer surface portion 41a and the second outer surface portion 41b. In this restricting portion, for example, the relative movement between the first outer surface portion 41a and the second outer surface portion 41b is restricted in the direction along the circumferential direction C and the axial direction A described in the embodiment.

  -The main body part 11 may be changed to a configuration in which the main body part can be bent by forming a bent part such as a concave stripe in the main body part 11 and the main body part is made into a deformed state using the bending. For example, in the case of a main body having an increased thickness, it is easy to make the main body deformed by forming a bent portion. The main body 11 may be changed to a main body that is deformed by a bent portion and a curved portion.

  -Parts other than the main-body part 11 can be provided in a foamable member. For example, an attachment member formed of a heat-resistant material capable of withstanding heating that foams and hardens the main body 11 is joined to the head shown in FIGS. 6B and 7B, and the attachment member The main body 11 may be configured to be attached to the first panel 51. Further, for example, a reinforcing member formed from the heat-resistant material can be laminated or embedded in the main body 11.

-The main-body part 11 may be formed by couple | bonding several components.
-As a 1st panel which attaches a foamable member (main-body part 11), an inner panel, an outer panel, and a reinforcement panel are mentioned, for example. The hollow structure formed by including the first panel is not limited to the hollow structure constituting the vehicle, but may be a hollow structure applied to railways, ships, aircrafts, buildings, and the like.

  The shape of the foamable member (main body portion 11) is not particularly limited, and can be appropriately changed according to, for example, the internal shape of the hollow structure, the amount of foam formed, and the like. As the shape of the main body portion, from the viewpoint that it is easy to form a mounting portion by raising a part of the main body portion or to be in a deformed state, the first outer surface 11a and the second outer surface 11b as in the above embodiment. It is preferable to form a sheet shape with the front and back surfaces.

  The foam 61 of the above embodiment is formed so as to fill the internal space of the hollow structure 53 in the cross section of the hollow structure 53 shown in FIG. 4 (b). It may be formed so that there is a hollow portion where no arrangement is made.

The technical idea that can be grasped from the above embodiment will be described below.
The restricting portion is positioned on the insertion hole side with respect to the recessed portion positioned on the opposite side of the insertion hole side with respect to the cut portion and the cut portion as a reference in a state before the main body portion is deformed. A locking portion configured by a main body portion, wherein the locking portion is disposed between a first wall portion and a second wall portion of the recess in the deformed state, and the first A first support part that supports the first wall part in a state where the locking part is disposed between the first wall part and the second wall part; and a second support part that supports the second wall part A foamable member.

  A ... axial direction, C ... circumferential direction, 11 ... main body, 11a ... first outer surface, 11b ... second outer surface, 12 ... notch, 13 ... mounting portion, 14 ... insertion hole, 15 ... recess (regulator), 15a ... 1st wall part, 15b ... 2nd wall part, 16, 19 ... Locking part (regulation part), 17 ... Support part (regulation part), 17a ... 1st support part, 17b ... 2nd support part, 18 ... convex portion (regulating portion), 21 ... first cut portion, 22 ... second cut portion, 31 ... first mounting portion, 31a ... first head portion, 31b ... first base portion, 31c ... mounting locking portion, 32 ... 2nd attachment part, 32a ... 2nd head, 32b ... 2nd base part, 41a ... Part of 1st outer surface, 41b ... Part of 2nd outer surface, 51 ... 1st panel (component), 51a ... Installation Hole 52, second panel 53, hollow structure 61, foam.

Claims (7)

A foamable member that has a main body part that is attached to a constituent member constituting a hollow structure and is foamed and cured by heating to form a foam,
The main body has a first outer surface and a second outer surface located on the back side of the first outer surface, the first outer surface is an outer peripheral surface, and the second outer surface is an inner peripheral surface. In a deformed state in which a part of the first outer surface and a part of the second outer surface face each other.
The main body has a notch that allows part of the main body to stand up with respect to the first outer surface, and a part of the upstanding main body is configured as an attachment portion that is attached to the component member,
The body portion has an insertion hole into which the attachment portion is inserted in the deformed state,
The main body has a restricting portion that restricts relative movement between a part of the first outer surface and a part of the second outer surface facing a part of the first outer surface in the deformed state. Sexual member.   The restricting portion includes a concave portion positioned on the opposite side of the insertion hole side with respect to the cut portion and a main body positioned on the insertion hole side with respect to the cut portion in a state before the main body portion is deformed. 2. The structure according to claim 1, further comprising a locking portion configured by a portion, wherein the locking portion is disposed between a first wall portion and a second wall portion of the concave portion in the deformed state. Foaming member.   The restricting portion is located on the insertion hole side with respect to the protruding portion located on the side opposite to the insertion hole side with respect to the cut portion and the cut portion as a reference in a state before the main body portion is deformed. The foamable member according to claim 1, further comprising a locking portion, wherein the convex portion is inserted into the locking portion in the deformed state.   The attachment portion includes a head portion that protrudes from the insertion hole to the first outer surface side in the deformed state, and a base portion that connects the head portion to the main body portion, and the notch portion includes the head portion. The foamable member according to any one of claims 1 to 3, wherein the foamable member has a shape located on the insertion hole side with respect to the base portion.   The attachment portion includes a head portion that protrudes from the insertion hole to the first outer surface side in the deformed state, and a base portion that connects the head portion to the main body portion, and the cut portion includes the head portion. 4. The foamable member according to claim 1, wherein the foaming member has a shape that is located on a side opposite to the insertion hole side with respect to the base portion. 5. The attachment portion includes a first attachment portion formed by a first cut portion and a second attachment portion formed by a second cut portion,
The first attachment portion includes a first head that protrudes from the insertion hole to the first outer surface side in the deformed state, and a first base that connects the first head to the main body,
The second attachment portion has a second head that protrudes from the insertion hole to the first outer surface in the deformed state, and a second base that connects the second head to the main body,
The first notch has a shape in which the first head is positioned on the insertion hole side with respect to the first base,
The foam according to any one of claims 1 to 3, wherein the second cut portion has a shape in which the second head is positioned on the side opposite to the insertion hole side with respect to the second base portion. Sexual member.   The foamable member according to claim 6, wherein the first cut portion and the second cut portion are continuous.