JP2007245413A - Design cover - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a design cover capable of reducing the sink of its design surface even if having an interfering part on its back and capable of being manufactured inexpensively. <P>SOLUTION: In the design cover made of a resin constituted by integrally molding a cover main body 1 and an attaching part 2, the surfaces of a seat part 20 and a leg part 25 are constituted of an interfering opposed surface 30 having the part opposed to the interfering part 13 and the interfering trailed surface 31 having the part trailed to the interfering part 13, and the rapping direction X of the interfering opposed surface 30 and the rapping direction Y of the interfering trailed surface 31 are set to a crossing direction. The seat part 20 is extended in the rapping direction Y of the interfering trailed surface 31 and the cavity 23 opened to the rearside of the rapping direction Y of the interfering trailed surface 31 is provided. The head part 27 expanded toward the rapping direction Y of the interfering trailed surface 31 is formed to the interfering trailed surface 31 in the leg part 25 and the interfering opposed surface 30 is formed into a non-undercut shape with respect to the rapping direction X of the interfeing opposed surface and the interfering trailed surface 31 is formed into the non-undercut shape with respect to the rapping direction Y of the interfering trailed surface. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a design cover that is attached to a counterpart material and covers the counterpart material.

  The design cover is attached to the counterpart material and covers the counterpart material. The design cover is composed of a cover main body and an attachment portion, and the attachment portion is attached to the mating member by engaging with or mating with the mating material. The cover body has a design surface visually recognized by the user and a back surface facing away from the design surface. The attachment portion is formed on the back surface.

  This type of design cover is generally made of resin, and the cover body and the mounting portion are integrally formed. For this reason, the boundary portion between the cover main body and the mounting portion is very thick, and a depression (so-called sink) is generated at a position corresponding to this portion in the design surface. Design covers with sink marks are inferior in design.

  By the way, in recent years, a technique for thinning a portion adjacent to the cover body in the mounting portion has been proposed (see, for example, Patent Document 1). In the design cover introduced in Patent Document 1, the attachment portion includes a fixing member and a fixing member holding portion. The fixing member holding part is formed integrally with the cover body, and the fixing member is formed separately from the cover body. Since a cavity communicating with the outside is formed in the fixing member holding portion, a portion adjacent to the cover body in the attachment portion is relatively thin. Therefore, according to this type of design cover, there is a possibility that sink marks generated on the design surface of the cover body can be suppressed.

  However, since the design cover introduced in Patent Document 1 is formed with a part of the attachment portion (fixing member) separately from the cover main body, the number of parts of the design cover increases, and the design cover is molded. The number of molds required for this is increased. For this reason, this type of design cover has a problem of high manufacturing costs.

  If the fixing member is integrally formed with the fixing member holding portion, the number of parts of the design cover is reduced, and the design cover can be manufactured at low cost. However, the portion (head) that engages with the mating member in the fixing member has a larger diameter than the portion adjacent to the head. For this reason, it is necessary to divide the shaping | molding die for shape | molding an attaching part into two or more. That is, a molding die for molding this type of mounting portion is composed of two or more cavity molds (portions for molding the surface of the molded product in the molding die).

By the way, the back surface of the cover body may be provided with a portion that is raised or depressed in the thickness direction in addition to the attachment portion. For example, when the cover body is formed in a shape curved toward the back surface side, a portion (hereinafter referred to as an interference portion) that protrudes in the thickness direction is formed on the back surface of the cover body in addition to the attachment portion. The Therefore, the molding die for molding this type of design cover may not be able to die-cut the mounting portion because the interference portion interferes with only two cavity molds for molding the mounting portion. In this case, a large number (3 or more) of cavity molds for forming the attachment portion are required, which causes a problem that the manufacturing cost of the design cover increases.
JP 2002-187498 A

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a design cover that can reduce the sink on the design surface and can be manufactured at low cost even if the back surface has an interference portion.

  The design cover of the present invention that solves the above problems has a design surface and a back surface that faces away from the design surface, and has a cover body that has an interference portion that protrudes or sinks in the thickness direction on the back surface, and the back surface of the cover body. A design cover made of resin in which the cover main body and the mounting portion are integrally molded, and the mounting portion is a seat adjacent to the cover main body. And a leg portion extending from the seat portion, and the surface of the seat portion and the leg portion has an interference facing surface having a portion facing the interference portion, and an interference back surface having a portion facing the interference portion, The interference facing surface and the interference back surface are formed by different cavity molds in the same mold, and the die cutting direction of the interference facing surface and the die cutting direction of the interference back surface are cross directions, Part includes part of the border with the cover body The inner surface of the seat is a part of the interference back surface, and at least a portion of the seat adjacent to the cover main body is thinner than the cover main body. The head has a head that bulges in the die-cutting direction of the interference back surface, and the interference facing surface has a non-undercut shape with respect to the die cutting direction of the interference facing surface. Is characterized by having a non-undercut shape with respect to the punching direction of the interference back surface.

The design cover of the present invention preferably includes any one of the following configurations (1) to (2). It is desirable to have both configurations (1) and (2).
(1) The interference portion has a mounting facing surface having a portion facing the interference facing surface, and the mounting facing surface has a non-undercut shape with respect to a die cutting direction of the interference facing surface. And the mounting facing surface are formed by the same cavity mold.
(2) The thickness of at least a portion adjacent to the cover main body in the seat is ½ or less of the thickness of the cover main body.

  In the design cover of the present invention, a cavity including a part of the boundary with the cover body is provided in the seat portion, that is, the portion adjacent to the cover body in the mounting portion. Since the design cover of the present invention has such a cavity, a portion adjacent to the cover body in the mounting portion can be made thinner than the cover body. Therefore, in the design cover of the present invention, sink marks generated on the design surface can be reduced.

  Further, in the design cover of the present invention, the surface of the leg portion and the seat portion is a surface having a portion facing the interference portion (interference facing surface) and a surface having a portion facing away from the interference portion (interference back surface). Each was molded with different cavity molds in the same mold, and the direction of punching of the interference facing surface and the direction of punching of the interference back surface were crossed. Then, a portion (head) that engages with the mating member in the attachment portion was formed on the interference back surface of the leg portion, and bulged toward the direction of punching of the interference back surface. For this reason, in the design cover of this invention, the interference opposing surface and interference back surface of an attaching part (a leg part and a seat part) can be formed in the shape which makes a non-undercut shape with respect to each mold release direction. In addition, since the cavity extends in the die-cutting direction of the interference back surface, the inner surface of the seat portion, that is, the outer edge of the cavity can be constituted by a part of the interference back surface. Therefore, there is no need for a separate cavity mold for forming the cavity. Therefore, the attachment part in the design cover of the present invention can be molded with two cavity molds in the same mold and can be manufactured at low cost. In other words, the mold for molding the attachment portion is a movable mold (or a fixed mold) having a slide core. Among the movable molds (or fixed molds), a general mold surface that is a mold surface other than the slide core is one cavity mold. The slide core becomes the other cavity mold. One of the interference facing surface and the interference back surface is formed by a slide core, and the other is formed by a general mold surface. Therefore, the design cover of the present invention can be manufactured at low cost because only one slide core for forming the attachment portion is required.

  When the design cover of the present invention includes the above configuration (1), the interference facing surface that is a part of the surface of the mounting portion and the mounting facing surface that is a part of the surface of the interference portion are the same cavity mold. Since it can be molded simultaneously, it can be manufactured at a lower cost.

  In the case where the design cover of the present invention has the above configuration (2), sink marks generated on the design surface can be more reliably reduced.

  The design cover of the present invention can be used, for example, as various types of covers disposed in an engine room of an automobile or an automobile molding.

  The design cover of the present invention has a cover body and an attachment portion. The cover body has a design surface and a back surface. The design surface of the cover main body is a surface visually recognized by the user, and some design may be displayed by forming grooves, protrusions, textures, etc., or these may not be formed.

  In the design cover of the present invention, the back surface of the cover main body has an interference portion that protrudes or sinks in the thickness direction. The interference portion may have a protruding shape or a standing wall shape in which a part of the back surface is raised, or a groove shape or a hole shape in which a part of the back surface is depressed, and the shape is not particularly limited. The interference part is formed on the back surface of the cover main body at a position avoiding the interference part.

  Hereinafter, the design cover of this invention is demonstrated based on drawing.

Example 1
The design cover of Example 1 includes the above configurations (1) and (2). The design cover of Example 1 is disposed in the engine room of an automobile. In detail, the design cover of Example 1 is attached to the engine cover which is the 1st partner material, and covers the air intake duct which is the 2nd partner material. A perspective view schematically showing the design cover of Example 1 is shown in FIG. FIG. 2 is a cross-sectional view schematically showing a state in which the design cover of Example 1 attached to the counterpart material is cut along AA ′ in FIG. FIG. 3 is a cross-sectional view schematically showing how the design cover of Example 1 is molded. 3 is a cross-sectional view at the same position as FIG. Hereinafter, the upper, lower, left, right, front, and rear in the first embodiment refer to the upper, lower, left, right, front, and rear shown in FIG.

  The design cover of Example 1 has a cover main body 1 and an attachment portion 2. The cover body 1 and the attachment portion 2 are made of resin and are integrally formed by an injection molding method.

  The cover body 1 has a design surface 10 and a back surface 11. The design surface 10 is a surface visually recognized by the user, and fine irregularities (so-called wrinkles) are formed on the surface. The back surface 11 is a surface that faces away from the design surface 10 and includes a general portion 12 that is substantially planar and an interference portion 13 that protrudes in the thickness direction (vertical direction in FIG. 1). The attachment portion 2 is formed on the general portion 12 of the back surface 11.

  The attachment part 2 has a seat part 20 and a leg part 25. The seat portion 20 is a portion adjacent to the cover main body (back surface 11) and has a substantially frame shape. Specifically, the seat portion 20 includes two standing wall portions 21 that extend substantially perpendicularly from the general portion 12 while being spaced apart from each other in the left-right direction, and a top wall portion 22 that bridges the top portions of the standing wall portions 21. The upper surface of the top wall portion 22 and the back surface 11 of the cover body are separated from each other. In the design cover of the first embodiment, the space defined by the mutually facing surfaces of the two standing wall portions 21, the upper surface of the top wall portion 22, and the back surface 11 of the cover body 1 is a cavity 23. The cavity 23 is a part of the seat portion 20 and includes a part of the boundary portion between the seat portion 20 and the cover body 1.

  In the design cover of the first embodiment, the portion 21 a adjacent to the cover body 1 in each of the standing wall portions 21 is thinner than the other portions, and the thickness is 2/5 of the thickness of the cover body 1. It is. A portion (fragile portion 22a) adjacent to the standing wall portion 21 in the top wall portion 22 is thinner than the other portions.

  A leg portion 25 extending substantially perpendicular to the general portion 12 is formed on the top wall portion 22 of the seat portion 20. The leg portion 25 includes a leg main body portion 26, a head portion 27, and four ribs 28. The leg body portion 26 has a cylindrical shape. The head portion 27 bulges rearward from the lower end rear portion of the leg body portion 26. The head 27 has a ring shape divided into two in the axial direction. Specifically, the cross-section of the head 27 is larger than the radial cross-section of the leg main body 26, and the radial direction of the leg main body 26 from a semicircle formed concentrically with the radial cross-section of the leg main body 26. It is the shape except the part which overlaps with a cross section. Each rib 28 is formed at the base of the leg body 26 and extends one by one in the front-rear and left-right directions. As shown in FIG. 2, the design cover of Example 1 is attached to the counterpart material 6 by the head portion 27 engaging with the counterpart material 6. Specifically, the mating member 6 has a through-hole-shaped bush holding hole 60 and a rubber bush 62 attached inside the bush holding hole 60. The rubber bushing 62 has a through hole-like mounting hole 61. When attaching the design cover of the first embodiment to the mating member 6, the leg main body 26 and the head 27 are press-fitted into the attachment holes 61 of the rubber bush 62. When the leg main body 26 and the head 27 are press-fitted into the rubber bush 62 until the head 27 passes through the mounting hole 61, the head 27 engages with the lower surface of the rubber bush 62. Thus, the design cover of Example 1 is fixed to the other material 6 by the head 27 engaging with the other material 6. In addition, since the rib 28 extended up and down is provided in the base part side of the leg part 26, the other party material 6 does not move large up and down with respect to the leg part 26. As shown in FIG.

  The surfaces of the seat part 20 and the leg part 25 are composed of an interference facing surface 30 and an interference back surface 31. The interference facing surface 30 includes a portion facing the interference portion 13, and the interference back surface 31 includes a portion facing the interference portion 13. In the design cover of the first embodiment, the portion indicated by the oblique lines in FIG. 1 is the interference back surface 31 of the mounting portion 2. In the attachment portion 2, a portion other than the portion indicated by oblique lines becomes the interference facing surface 30. The interference facing surface 30 and the interference back surface 31 are formed by different cavity molds in the same mold. That is, as shown in FIG. 3, the mounting portion 2 is formed by the same movable mold 4, and the movable mold 4 molds the movable mold side cavity mold 40 that molds the interference facing surface 30 and the interference back surface 31. The mold is divided into the slide core side cavity mold 41. The boundary portion between the two cavity molds 40 and 41 coincides with the boundary portion (so-called parting line) between the interference facing surface 30 and the interference back surface 31. In the design cover of Example 1, the mold release direction of the interference facing surface 30 is an arrow X direction in FIGS. 1 and 3, and the mold release direction of the interference back surface 31 is an arrow Y direction in FIGS. The mold opening direction of the mold 40 is the arrow X ′ direction in FIG. 3, and the mold opening direction of the mold 41 is the arrow Y ′ direction in FIG. 3. The arrow X direction and the arrow X ′ direction are opposite directions, and the arrow Y direction and the arrow Y ′ direction are opposite directions.

  In the design cover of Example 1, the die cutting direction X of the interference facing surface 30 and the die cutting direction Y of the interference back surface 31 are orthogonal to each other. The interference back surface 31 includes the surface of the head 27. The punching direction Y of the interference back surface 31 coincides with the rear direction that is the bulging direction of the head 27. As shown in FIG. 1, the parting line between the interference facing surface 30 and the interference back surface 31 on the surface (outer surface) of the seat portion 20 and the surface of the leg portion 25 passes through the center of the leg main body portion 26 and is the interference facing surface. 30 is a line where the plane parallel to the die-cutting direction X intersects the surfaces of the seat 20 and the legs 25. As shown in FIG. 3, the parting line between the interference facing surface 30 and the interference back surface 31 on the inner surface of the seat portion 20 is the front end portion on the inner surface side of the two standing wall portions 21 and the top wall portion 22 of the seat portion 20. It is a straight line passing through (the end on the interference unit 13 side).

  In the design cover of the first embodiment, the inner surface of the seat portion 20, that is, the outer edge of the cavity 23 is formed of a part of the interference back surface 31. In addition, since the thickness of the portion 21a adjacent to the cover body 1 is 2/5 of the thickness of the cover body 1 in each standing wall portion 21, the portion adjacent to the cover body 1 in the seat portion 20 is the cover body. It is thinner than 1.

  In the design cover of the first embodiment, the interference facing surface 30 has a non-undercut shape with respect to the die cutting direction X of the interference facing surface 30. The interference back surface 31 has a non-undercut shape with respect to the punching direction Y of the interference back surface 31. In this specification, the non-undercut shape is a shape of a predetermined surface, and when the surface is removed from the cavity mold, the gap between the surface and the mold surface of the cavity mold widens. Say. For example, when the interference facing surface 30 moves in the mold drawing direction X with respect to the movable mold side cavity mold 40 when the interference facing surface 30 is removed from the movable mold side cavity mold 40, the interference facing surface 30 and the movable mold side A gap with the mold surface of the cavity mold 40 is widened. When the interference back surface 31 moves in the mold drawing direction Y with respect to the slide core side cavity die 41 when the interference back surface 31 is removed from the slide core side cavity die 41, the interference back surface 31 and the slide core A gap with the mold surface of the side cavity mold 41 increases.

  In the design cover of the first embodiment, the interference facing surface 30 has a non-undercut shape with respect to the die cutting direction X, and therefore the interference facing surface 30 can be formed by one movable mold side cavity mold 40. Since the interference back surface 31 forms a non-undercut shape with respect to the die cutting direction Y, the interference back surface 31 can be formed by one slide core side cavity die 41. That is, in the design cover of Example 1, only one movable mold 4 having one slide core (slide core side cavity mold 41) is required to mold the attachment portion 2. Therefore, the design cover of Example 1 can be manufactured at low cost.

  In the design cover of Example 1, the interference portion 13 faces the interference facing surface 30 and has a non-undercut shape with respect to the die cutting direction X of the interference facing surface 30. And as shown in FIG. 3, the interference opposing surface 30 and the interference part 13 are shape | molded by the same movable mold | type side cavity type | mold 40. As shown in FIG. Therefore, the design cover of Example 1 can greatly reduce the mold for forming the back surface 11 and can be manufactured at a lower cost. In the design cover of the first embodiment, the entire interference portion 13 is a mounting facing surface.

  Further, the portion 21a adjacent to the cover body 1 in each standing wall portion 21 has a thickness that is 2/5 of the thickness of the cover body 1, and the portion adjacent to the cover body 1 in the seat portion 20 is the cover. It is thinner than the main body 1. For this reason, according to the design cover of Example 1, the sink mark which arises in the design surface 10 can be reduced reliably. In the design cover of Example 1, there are very few sink marks on the design surface 10, and the design surface 10 is formed with wrinkles, so that the design surface 10 does not become conspicuous.

  In addition, in the design cover of Example 1, the weak part 22a is formed in the seat part 20. FIG. As described above, the fragile portion 22a is thinner than the other portions of the top wall portion 22. For this reason, for example, when a vertical force is applied to the design cover at the time of a collision or the like, the seat portion 20 is deformed and the vertical size of the mounting portion 2 is reduced, and the design cover moves toward the mating member 6. it can. Therefore, the design cover of Example 1 can absorb an impact at the time of a collision or the like.

  In the design cover of the first embodiment, the head portion 27 is formed so that the radial cross section thereof is constant in the axial direction (vertical direction). However, the head portion 27 is not limited to this and can have various shapes. For example, as shown in FIG. 4, if the tip of the head 27 is chamfered, the head 27 can be easily press-fitted into the mating member 6 (the mounting hole 61 of the rubber bush 62).

  The design cover of Example 1 has four ribs 28, and each rib 28 extends one by one in the front-rear and left-right directions. However, the number of ribs 28 and the direction in which the ribs 28 extend are not limited thereto. For example, as shown in FIG. 5, the rib 28 on the interference facing surface 30 side may extend in the radial direction with the leg portion 25 as the center. In this case, the leg portion 25 can be strengthened more strongly by the rib 28, and the vertical movement of the mating member 6 can be more reliably suppressed by the rib 28.

  In the design cover of Example 1, the portion 21a adjacent to the cover body 1 in the standing wall portion 21 is thinner than the other portions. However, in the design cover of the present invention, the standing wall portion 21 is made constant in thickness. May be. Moreover, although the design cover of Example 1 has the weak part 22a in the top wall part 22, the design cover of this invention does not need to have the weak part 22a.

  In the design cover of the first embodiment, the cavity 23 has a portion on the interference back surface 31 side and a portion on the interference facing surface 30 side in communication with the outside world, but at least a portion on the interference back surface 31 side communicates with the outside world. Then, the outer edge of the cavity 23, that is, the inner surface of the seat portion 20 can be formed by the slide core side cavity mold 41.

(Example 2)
The design cover of Example 2 includes the above configurations (1) and (2). The design cover of Example 2 is the same as the design cover of Example 1 except for the shapes of the legs, the interference back surface, and the interference facing surface. A perspective view schematically showing the design cover of Example 2 is shown in FIG. Hereinafter, in Example 2, the terms “up”, “down”, “left”, “right”, “front”, and “rear” refer to “up, down, left, right, front, and rear” illustrated in FIG.

  The leg portion 25 in the design cover of the second embodiment has a leg main body portion 26 having the same shape as the leg main body portion 26 in the design cover of the first embodiment, and a rib 28 having the same shape as the rib 28 in the design cover of the first embodiment. . The head 27 is smaller than the head 27 in the design cover of the first embodiment. Specifically, the cross-section of the head 27 is larger than the radial cross-section of the leg main body 26, and the diameter of the leg main body 26 from a 120 ° fan shape that is concentrically formed with the radial cross-section of the leg main body 26. It is the shape except the part which overlaps with a direction cross section.

  In the design cover of Example 2, the portion indicated by the oblique lines in FIG. 6 is the interference back surface 31 of the mounting portion 2. A portion of the mounting portion 2 other than the portion indicated by oblique lines becomes the interference facing surface 30. The interference facing surface 30 and the interference back surface 31 are formed of different cavity molds in the same movable mold, and the interference facing surface 30 on the surface (outer surface) of the seat portion 20 and the surface of the leg portion 25 as shown in FIG. The parting line between the interference back surface 31 and the interference back surface 31 passes through the center of the leg main body portion 26 and crosses the back side of the interference back surface 31 at 60 ° with respect to the die cutting direction Y (die cutting). This is a line where the rear portion of the direction intersects the surface of the seat 20 and the leg 25. The parting line between the interference facing surface 30 and the interference back surface 31 on the inner surface of the seat portion 20 is the same as the design cover of the first embodiment.

  The design cover of the second embodiment is different from the design cover of the first embodiment in the shape of the leg portion 25, the interference back surface 31 and the interference facing surface 30, but the portion adjacent to the cover body 1 in the seat portion 20 is a cover. It is thinner than the main body 1. For this reason, also with the design cover of Example 2, the sink mark which arises on the design surface 10 can be reduced reliably similarly to the design cover of Example 1.

  In the design cover of the second embodiment, the head 27 bulges in the die cutting direction Y of the interference back surface 31, and the interference facing surface 30 is non-undercut with respect to the die cutting direction X of the interference facing surface 30. The interference back surface 31 forms a non-undercut shape with respect to the die cutting direction Y of the interference back surface 31. For this reason, the design cover of Example 2 is the same as the design cover of Example 1, and the molding die is only one movable mold having one slide core (slide core side cavity mold) in order to mold the mounting portion 2. That's it. Therefore, the design cover of Example 2 can be manufactured at low cost.

  Further, in the design cover of the second embodiment, the interference portion 13 is opposed to the interference facing surface 30 and has a non-undercut shape with respect to the punching direction X of the interference facing surface 30. The interference facing surface 30 and the mounting facing surface are formed with the same mold. Therefore, similarly to the design cover of Example 1, the design cover of Example 2 can greatly reduce the mold for forming the back surface 11 and can be manufactured at a lower cost.

  In the design covers of Examples 1 and 2, the interference portion 13 extends in the direction intersecting the seat portion 20 and the leg portion 25, but the interference portion 13 may extend in parallel to the seat portion 20 and the leg portion 25. good. In the design covers of Examples 1 and 2, the seat portion 20 and the leg portion 25 extend in parallel to each other, but the seat portion 20 and the leg portion 25 may extend in a crossing direction. For example, the end portion (lower end) side of the leg portion 25 may be arranged rearward (rear side of the die cutting direction Y) than the base portion (upper end) side. In this case as well, if the parting line between the interference facing surface 30 and the interference back surface 31 is appropriately set, the interference facing surface 30 has a non-undercut shape with respect to the die cutting direction X of the interference facing surface 30, The interference back surface 31 can be formed into a non-undercut shape with respect to the die cutting direction Y of the interference back surface 31.

3 is a perspective view schematically illustrating a design cover of Example 1. FIG. It is sectional drawing which represents typically a mode that the design cover of Example 1 attached to the other party material was cut | disconnected by A-A 'in FIG. It is sectional drawing which represents typically a mode that the design cover of Example 1 is shape | molded. It is sectional drawing which represents typically an example of the attaching part in the design cover of this invention. It is a top view which represents typically an example of the attaching part in the design cover of this invention. FIG. 6 is a perspective view schematically illustrating a design cover of Example 2.

Explanation of symbols

1: cover body, 2: mounting portion, 10: design surface, 11: back surface, 13: interference portion, 20: seat portion, 25: leg portion, 23: cavity, 25: leg portion, 27: head portion, 30: Interference facing surface, 31: Interference back surface, X: Die cutting direction of interference facing surface, Y: Die cutting direction of interference back surface

Claims (3)

A cover body having a design surface and a back surface facing away from the design surface, and having an interference portion on the back surface that is raised or depressed in the thickness direction;
A resin-made design cover in which the cover main body and the mounting portion are integrally formed with the mounting portion formed at a position avoiding the interference portion in the back surface of the cover main body. ,
The mounting portion has a seat portion adjacent to the cover body and a leg portion extending from the seat portion,
The surface of the seat part and the leg part comprises an interference facing surface having a part facing the interference part, and an interference back surface having a part facing the interference part,
The interference facing surface and the interference back surface are formed by different cavity molds in the same mold, and the die cutting direction of the interference facing surface and the die cutting direction of the interference back surface are intersecting directions,
The seat has a cavity that partially includes a boundary portion with the cover body and extends in a die-cutting direction of the interference back surface;
The inner surface of the seat is a part of the interference back surface, and at least a portion of the seat adjacent to the cover body is thinner than the cover body,
The interference back surface in the leg is formed with a head that bulges toward the direction of punching of the interference back surface,
The interference facing surface has a non-undercut shape with respect to the die cutting direction of the interference facing surface, and the interference back surface has a non-undercut shape with respect to the die cutting direction of the interference back surface. Design cover.   The interference portion has a mounting facing surface having a portion facing the interference facing surface, and the mounting facing surface has a non-undercut shape with respect to a die cutting direction of the interference facing surface, and the interference facing surface and the interference facing surface The design cover of Claim 1 currently shape | molded by the same cavity type | mold as the attachment opposing surface.   The design cover according to claim 1, wherein a thickness of at least a portion adjacent to the cover main body in the seat portion is ½ or less of a thickness of the cover main body.

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