JP2022011317A - Fastening structure of fastened member - Google Patents

Abstract

To provide a fastening structure of a fastened member which enables improvement of work efficiency during manufacturing.SOLUTION: In a fastening structure of a strap 50 fastened to an ARB cover 21 by a screw 33 threadedly engaging with a resin member 21, the resin member 21 includes: a plate-like body part 40; and a boss part 42R which is erected from the body part 40 and with which the screw 33 is threadedly engaged. The boss part 42R includes protruding parts 47 each forming a protrusion on a facing surface 46 forming a surface which faces a head 33A of the screw 33. The strap 50 is sandwiched between the head 33A of the screw 33 and the facing surface 46 of the boss part 42R and fastened to the resin member 21 while making contact with the protruding parts 47.SELECTED DRAWING: Figure 6

Description

The present invention relates to a fastening structure of a member to be fastened.

Conventionally, as a fastening structure of a member to be fastened, the one described in Patent Document 1 is known. In the fastening structure of the fastened member (member mounting structure) described in Patent Document 1, a mounting screw is screwed into a boss projecting from a vehicle interior part such as a door trim board, and a mounting component such as an ornament (fastened member) is screwed. ) Is integrally fixed to the interior parts for vehicles. The mounting parts are pressed against the vehicle interior parts by the heads of the mounting screws.

Japanese Unexamined Patent Publication No. 2009-2466

However, in the configuration disclosed in Patent Document 1, when the mounting screw is screwed (screwed) into the boss, the mounting member may rotate with the rotation of the mounting screw. In that case, for example, it is necessary for an operator at the time of manufacturing to screw the mounting screw while supporting the mounting member, or to correct the rotated mounting member in the correct direction, which is complicated. Further, in order to prevent such rotation of the mounting member, for example, it is conceivable to provide a structure such as a hooking portion that catches on the mounting member and stops the rotation in the vicinity of the boss. The structure of the can be complicated and the manufacturing cost can be increased.

The present invention has been completed based on the above circumstances, and one of the objects of the present invention is to provide a fastening structure of a member to be fastened that can improve work efficiency during manufacturing. Another object of the present invention is to provide a fastening structure of a member to be fastened, which can realize simplification of the structure.

The present invention has a fastening structure of a member to be fastened to a resin member by a screw, wherein the resin member rises from a plate-shaped main body portion and the main body portion, and the boss portion to which the screw is fastened is fastened. The boss portion is provided with a protruding portion forming a protrusion on the facing surface facing the head of the screw, and the fastened member is a head of the screw and the boss portion. It is characterized in that it is sandwiched between the facing surface and fastened to the resin member in a form of contacting the protrusion.

According to such a fastening structure of the to be fastened member, when the worker in manufacturing screwes the screw into the boss portion and fastens the screwed member, the fastened member is pressed against the facing surface side of the boss portion by the head of the screw. The protrusions provided on the facing surfaces bite into the fastened member, so that the fastened member can be prevented from rotating due to the screwing of the screw. Thereby, the work efficiency of the worker at the time of manufacturing can be improved. Further, in order to prevent such rotation of the fastened member, for example, it is not necessary to provide a structure such as a hooking portion that is hooked on the fastened member and stops its rotation in the vicinity of the boss portion. It can be simplified and the manufacturing cost can be reduced.

Further, in the above configuration, the protrusion may be tapered toward the tip thereof. According to such a fastening structure of the fastened member, the tapered protrusion easily bites into the fastened member, and it becomes easy to stop the rotation of the fastened member due to the screwing of the screw.

Further, in the above configuration, the boss portion includes a hole portion into which the screw portion of the screw is inserted, the facing surface forms an annular shape surrounding the hole portion, and the protrusion portion is in the screwing direction of the screw. It can be assumed that the protrusion height becomes higher toward the opposite side. According to such a fastening structure of the fastened member, the protrusions provided on the annular facing surfaces surrounding the holes are more likely to bite into the fastened member, and the fastened member is rotated due to the screwing of the screw. It will be easier to stop.

Further, in the above configuration, the boss portion includes a hole portion into which the screw portion of the screw is inserted, the facing surface forms an annular shape surrounding the hole portion, and the protrusion portion is an outer peripheral side of the facing surface. It can be assumed that the protrusion height becomes higher toward. According to such a fastening structure of the fastened member, the protrusions provided on the annular facing surfaces surrounding the holes are easily bitten by the fastened member, and the rotation of the fastened member due to the screwing of the screw is stopped. It will be easier.

Further, in the above configuration, the resin member is an ARB cover that covers the ARB that protrudes when the vehicle falls, and is configured to be separable from other members provided in the vehicle by being pressed by the ARB. The member to be fastened may have a long shape, one end of which may be fastened to the resin member, and the other end of which may be attached to the other member. For example, the ARB cover may be provided with a contact portion that comes into contact with the protruding ARB in the vicinity of the boss portion, and a structure such as the above-mentioned hook portion is provided to prevent the member to be fastened from rotating. It's difficult. However, according to the fastening structure of the member to be fastened as described above, even if a structure such as a contact portion is provided near the boss portion, the screw can be screwed without providing the hooking portion described above. The rotation of the fastened member due to screwing can be suitably suppressed, and the fastened member can be accurately fastened to the ARB cover. ARB is an abbreviation for Active Roll Bar, which is mounted on a vehicle such as an open car and protects the occupants by protruding when the vehicle falls. Further, since the resin member as the ARB cover is connected to other members of the vehicle via the fastened member, it is possible to prevent the ARB cover from scattering even when the vehicle falls.

According to the present invention, it is possible to provide a fastening structure of a member to be fastened that can improve work efficiency during manufacturing. Further, it becomes possible to provide a fastening structure of a member to be fastened, which can realize a simplification of the structure.

The figure which looked at the vehicle which concerns on embodiment from above View from above near the ARB cover Cross-sectional view near the ARB cover (section III-III in FIG. 2) View of ARB cover from the back side Cross-sectional view showing the fastening structure of the strap to the ARB cover (VV line cross section of FIG. 4) Perspective view of the vicinity of the boss from below View of the vicinity of the boss from below View of one of the protrusions from behind

<Embodiment>
Embodiments of the present invention will be described with reference to FIGS. 1 to 8. In this embodiment, a fastening structure of a strap (fastened member) to be fastened to an ARB cover (resin member) 21 provided in a vehicle 10 which is a two-seater open car with screws will be described. Each figure will be described with the arrow direction FR being forward, the arrow direction RR being backward, the arrow direction U being upward, the arrow direction D being downward, the arrow direction L being left, and the arrow direction R being right.

As shown in FIGS. 1 and 2, the vehicle 10 has two seats 11 and 11 arranged in the left-right direction, and a meniscus-shaped package tray (other member) 12 provided on the rear side of the vehicle and having a length in the left-right direction. And two columnar ARBs 14 and 14 that project upward to protect the occupants when the vehicle 10 falls. The package tray 12 includes two notches 23, 23 which are on the rear side of each sheet 11 and have a shape in which the upper portion of the ARB 14 is notched in a concave shape. Two ARB covers 21 and 21 which are resin plate-like bodies covering the ARB 14 from above are attached to the front sides of the two notches 23 and 23. The two ARB covers 21 and 21 are provided on the left and right sides of the package tray 12 so as to be symmetrical to each other. The package tray 12 and the two ARB covers 21 and 21 are arranged so that the upper surfaces (surfaces) are flush with each other, forming an integral design.

As shown in FIGS. 3 and 4, the ARB cover 21 provided on the right side has a long plate-shaped main body portion 40 whose outer shape follows the notch 23 of the package tray 12 and a back surface side (lower surface side) of the main body portion 40. ) Is provided with a reinforcing portion 30 which is fixed so as to be superimposed on the main body portion 40 and reinforces the main body portion 40. The reinforcing portion 30 is located above the ARB 14, and has a contact portion 34 which is a portion to which the ARB 14 protruding upward when the vehicle 10 falls abuts, and a concave portion recessed rearward on the left rear side of the contact portion 34. 35 and. In the reinforcing portion 30, the rear portion of the contact portion 34, the portion between the contact portion 34 and the recess 35, and the portion on the left side of the recess 35 are formed by screwing a plurality of screws 33 into the main body portion 40. Is fixed to. The screw 33 is a right-handed screw that is screwed while advancing toward the main body 40 side (upper side) when turned clockwise.

The ARB cover 21 includes a plurality of locking portions 41 that are detachably locked to the package tray 12, and cylindrical boss portions 42R and 42L that rise downward from the main body portion 40. The locking portion 41 is configured such that the ARB 14 projecting upward abuts on the abutting portion 34 and pushes up the ARB cover 21 upward to disengage from the package tray 12. As a result, the ARB cover 21 can be separated from the package tray 12.

The boss portions 42R and 42L are arranged on the left rear side of the right boss portion 42R arranged behind the contact portion 34 of the reinforcing portion 30 and the recess 35 of the reinforcing portion 30, and are located on the left side of the right boss portion 42R. It consists of a left boss portion 42L and a left boss portion 42L. One end 50A of a strap (fastened member) 50, which is a strip-shaped (long) resin fabric, is fastened to the right boss portion 42R by screwing a screw 33 (the strap 50 is one of them). It can be said that the end portion 50A is fastened to the ARB cover 21 by being screwed together with the right boss portion 42R by screwing the screw 33). As shown in FIG. 3, the other end 50B of the strap 50 is fastened to the extending portion 23B extending from the notch 23 of the package tray 12 to the back surface side of the ARB cover 21 by screwing the screw 33. There is. As shown in FIG. 4, the strap 50 and the recess 35 of the reinforcing portion 30 are fastened to the left boss portion 42L by screwing the screw 33. In this embodiment, a strap which is a band-shaped (long) resin woven fabric is exemplified as a member to be fastened, but the strap is not limited to this. For example, as the member to be fastened, a member made of a relatively soft material such as a woven fabric or a non-woven fabric and having a string-like shape or a sheet-like shape can be adopted. In addition, as the member to be fastened, for example, a plate-shaped resin molded member having rigidity can be adopted.

Hereinafter, the right boss portion 42R will be described simply as the boss portion 42R. The left boss portion 42L has the same configuration as the right boss portion 42R. As shown in FIG. 6, around the boss portion 42R, a plurality of ribs 43 rising downward from the main body portion 40 and extending radially from the boss portion 42R are provided. The lower surface (rear surface side surface) 430 of the plurality of ribs 43 is flush with the facing surface 46 of the boss portion 42R, which will be described later. On the front side of the plurality of ribs 43, a wall portion 44 forming a wall rising downward from the main body portion 40 is provided. Among the plurality of ribs 43, the wall portion 44 includes ribs 43A and 43B extending in the left-right direction from the boss portion 42R, ribs 43C and 43D extending in the right front direction and the left front direction, and ribs 43E extending in the front direction. It is surrounded and provided in a U-shape when viewed from below. The wall portion 44 extends below the boss portion 42R and the plurality of ribs 43.

As shown in FIG. 5, the screw 33 includes a head 33A, which is a portion to which a tool such as a screwdriver is fitted, and a screw portion 33B rising from the head 33A in a columnar shape. A spiral groove is provided on the outer peripheral side of the threaded portion 33B in the vertical direction. As shown in FIGS. 5 and 6, the boss portion 42R is a hole-shaped hole portion 45 into which the screw portion 33B of the screw 33 is inserted, and a lower (back surface side) surface of the boss portion 42R, which is the screw 33. A facing surface 46 constituting a surface facing the head 33A of the head 33A is provided. The facing surface 46 forms an annular shape surrounding the hole 45. The facing surface 46 and the hole 45 form a taper whose diameter decreases toward the hole 45 side.

The facing surface 46 is provided with four projecting portions 47 forming a projecting shape downward. The strap 50 is fastened to the ARB cover 21 so that one end 50A thereof is sandwiched between the head 33A of the screw 33 and the facing surface 46 of the boss portion 42R and abuts on the four protrusions 47. ing. The threaded portion 33B of the screw 33 is screwed into the boss portion 42R, and the head 33A presses one end 50A of the strap 50 toward the facing surface 46 side of the boss portion 42R, so that the four protrusions 47 are strapped. It bites into one end 50A of 50. This constitutes the fastening structure 1 (see FIG. 5) of the strap 50 to the ARB cover 21.

As shown in FIGS. 6 to 8, the four protrusions 47 are located on the facing surface 46 at the portions connected to the ribs 43A and 43B arranged on the left and right sides and the ribs 43E and 43G arranged on the front and rear sides, respectively. is doing. The protrusion 47 has a triangular pyramid shape as a whole, and has a shape that tapers toward the tip (the lowermost portion). The bottom surface of the protrusion 47 (the surface in contact with the facing surface 46) has an isosceles triangle shape when viewed downward (see FIG. 7). The protrusion height (height protruding downward from the facing surface 46) of the protrusion 47 increases toward the outer peripheral side of the facing surface 46. The protrusion 47 is in a direction opposite to the screwing direction of the screw 33 (the direction in which the screw portion 33B is rotated so as to be inserted into the hole 45 and is in the clockwise direction) (counterclockwise direction). The protrusion height increases toward. Therefore, for example, among the plurality of protrusions 47, in the protrusion 47A located on the rear side (rib 43G side), the apex portion (tip in the protrusion 47A) 47A1 as the left rear portion has the highest protrusion height. It is said to be a high part.

Subsequently, the effect of this embodiment will be described. In the present embodiment, the strap 50 is fastened to the resin member (ARB cover) 21 by a screw 33 screwed to the resin member 21, and the resin member 21 has a plate-shaped main body 40 and a plate-shaped main body 40. A boss portion 42R that rises from the main body portion 40 and is screwed with a screw 33 is provided, and the boss portion 42R has a protruding portion 47 on a facing surface 46 that forms a surface facing the head 33A of the screw 33. The strap 50 is fastened to the resin member 21 so as to be sandwiched between the head 33A of the screw 33 and the facing surface 46 of the boss portion 42R and abutted against the protrusion 47. showed that.

According to such a fastening structure of the strap 50, when the worker in manufacturing screwes the screw 33 into the boss portion 42R, the strap 50 is moved to the facing surface 46 side of the boss portion 42R by the head 33A of the screw 33. It is possible to prevent the strap 50 from rotating due to the screwing of the screw 33 by being pressed and the protrusion 47 provided on the facing surface 46 biting into the strap 50. Thereby, the work efficiency of the worker at the time of manufacturing can be improved. Further, in order to prevent such rotation of the strap 50, for example, it is not necessary to provide a structure such as a hooking portion that is hooked on the strap 50 and stops the rotation in the vicinity of the boss portion 42R. It can be simplified and the manufacturing cost can be reduced.

Further, the protrusion 47 has a shape that tapers toward the tip thereof. According to such a fastening structure of the strap 50, the tapered protrusion 47 easily bites into the strap 50, and it becomes easy to stop the rotation of the strap 50 accompanying the screwing of the screw 33.

Further, the boss portion 42R includes a hole portion 45 into which the screw portion 33B of the screw 33 is inserted, the facing surface 46 forms an annular shape surrounding the hole portion 45, and the protrusion 47 is in the screwing direction of the screw 33. The protrusion height increases toward the opposite direction. According to such a fastening structure of the strap 50, the protrusion 47 provided on the annular facing surface 46 surrounding the hole 45 becomes easier to bite into the strap 50, and the strap 50 rotates with the screwing of the screw 33. It becomes easier to stop.

Further, the boss portion 42R includes a hole portion 45 into which the screw portion 33B of the screw 33 is inserted, the facing surface 46 forms an annular shape surrounding the hole portion 45, and the protrusion 47 faces the outer peripheral side of the facing surface 46. The higher the protrusion height. According to such a fastening structure of the strap 50, the protrusion 47 provided on the annular facing surface 46 surrounding the hole 45 is easily bitten by the strap 50, and the strap 50 rotates due to the screwing of the screw 33. It will be easier to stop.

Further, the resin member 21 is an ARB cover that covers the ARB 14 that protrudes when the vehicle 10 falls, and is configured to be separable from the package tray 12 provided in the vehicle 10 by being pressed by the ARB 14, and the strap 50 has a structure. It has a long shape, one end 50A is fastened to the resin member 21, and the other end 50B is attached to the package tray 12. The ARB cover is provided with a reinforcing portion 30 having a contact portion 34 that abuts on the protruding ARB 14 in the vicinity of the boss portion 42R, and a structure like the above-mentioned hook portion is provided to prevent the strap 50 from rotating. Difficult to do. However, according to the fastening structure of the strap 50 as described above, even if the reinforcing portion 30 having the contact portion 34 is provided in the vicinity of the boss portion 42R, the screw is screwed without providing the hooking portion described above. The rotation of the strap 50 accompanying the screwing of the 33 can be suitably suppressed, and the strap 50 can be accurately fastened to the ARB cover. Further, since the resin member 21 as the ARB cover is connected to the package tray 12 of the vehicle 10 via the strap 50, it is possible to prevent the ARB cover from scattering even when the vehicle 10 falls.

<Other embodiments>
The present invention is not limited to the embodiments described in the above description and drawings, and for example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not deviating from the gist other than the following. It can be changed in various ways.

(1) In addition to the above embodiment, the shape of the protrusion can be changed as appropriate. For example, the protrusions may be conical, square thrust, or columnar. Further, the protrusion may be a fine unevenness formed by, for example, embossing the entire surface of the facing surface.

(2) In the above embodiment, the screw is a right-handed screw, but the screw is not limited to this. For example, the screw may be a left-handed screw that is screwed while advancing toward the resin member when turned counterclockwise. In that case, the protrusion height of the protrusion is assumed to increase toward the direction opposite to the screwing direction (counterclockwise direction) of the left-handed screw (clockwise direction).

(3) In addition to the above embodiment, the boss portion constituting the fastening structure of the member to be fastened can be appropriately changed. For example, the left boss portion may also adopt the above-mentioned fastening structure of the member to be fastened.

(4) In the above embodiment, the other member is a package tray, but the present invention is not limited to this. For example, the other member may be another interior material such as a seat or a body panel.

(5) In the above embodiment, the strap fastening structure is adopted for the package tray arranged in the two-seater open car, but the package tray arranged behind the rear seat in the four-seater open car. It may be adopted in.

(6) The fastening structure of the members to be fastened exemplified in the above embodiment is not limited to that provided for vehicles, and may be provided in various vehicles. For example, the fastening structure of the fastened member may be applied to vehicles such as trains and amusement vehicles as ground vehicles, airplanes and helicopters as flight vehicles, and ships and submersibles as marine and underwater vehicles. can.

1 ... Strap fastening structure, 10 ... Vehicle, 12 ... Package tray (other members), 14 ... ARB, 21 ... ARB cover (resin member), 33 ... Screws, 33A ... Head, 33B ... Threaded parts, 40 ... Main body Part, 42R ... boss part, 45 ... hole part, 46 ... facing surface, 47 ... protrusion, 50 ... strap (fastened member), 50A ... one end, 50B ... other end

Claims (5)

It is a fastening structure of a member to be fastened to a resin member by a screw.
The resin member is
The plate-shaped body and
A boss portion that rises from the main body portion and to which the screw is fastened is provided.
The boss portion is provided with a protruding portion having a protruding shape on the facing surface facing the head of the screw.
The fastened member is sandwiched between the head of the screw and the facing surface of the boss portion, and is fastened to the resin member in a form of contacting the protrusion. Fastening structure. The fastening structure for a member to be fastened according to claim 1, wherein the protrusion has a shape that tapers toward the tip thereof. The boss portion includes a hole into which the threaded portion of the screw is inserted.
The facing surface forms an annular shape surrounding the hole,
The fastening structure for a member to be fastened according to claim 1 or 2, wherein the protrusion has a higher protrusion height toward a direction opposite to the screwing direction of the screw. The boss portion includes a hole into which the threaded portion of the screw is inserted.
The facing surface forms an annular shape surrounding the hole,
The fastening structure for a member to be fastened according to any one of claims 1 to 3, wherein the protruding portion has a higher protrusion height toward the outer peripheral side of the facing surface. The resin member is an ARB cover that covers the ARB that protrudes when the vehicle falls, and is configured to be separable from other members provided on the vehicle by being pressed by the ARB.
Claims 1 to 4, wherein the fastened member has a long shape, one end thereof is fastened to the resin member, and the other end is attached to the other member. The fastening structure of the member to be fastened according to any one of the following items.

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