JP7198433B2 - Fixed part structure of resin member - Google Patents

Description

TECHNICAL FIELD The present invention relates to a fixed portion structure of a resin member for attaching a resin member that holds a wire harness to be assembled to a vehicle body to a fixing member of the vehicle body.

Conventionally, when a part is attached to the body of an automobile, a stud bolt fixed to the body body is inserted into a bolt mounting hole drilled at a predetermined location of the mounting part as a mounting member, and then a nut is inserted. It was fixed and assembled by fastening. Locking means consisting of locking claws that engage with the stud bolts when the stud bolts are inserted into the bolt mounting holes of the mounting member to mount the mounting member are provided directly on the mounting member or in the mounting direction of the mounting member. It is provided in a member that is integrated with the counter (see Patent Document 1). Therefore, the mounting member in the state before the nut is tightened is held in a state of being temporarily fixed to the mounted member by the engagement of the locking claws.

Japanese Patent Application Laid-Open No. 2005-331068

However, according to the prior art described above, a cylindrical collar is disposed inside the mounting member, which is a fixed portion made of resin, to restrict compression of the mounting member due to tightening of the nut. For this reason, the locking claws of the mounting member need to extend from the outside of the collar, so they are provided on the outside of the mounting member. Moreover, in order to protrude the locking claw from the inside of the mounting member, it was necessary to make a hole in the side surface of the collar and expose the locking claw to the inside.

SUMMARY OF THE INVENTION The present invention solves the above-described problems, and provides a resin member capable of extending an engaging claw from the inner peripheral surface of a resin-made fixed portion and preventing compression of the resin-made fixed portion. An object of the present invention is to provide a structure for a fixed part.

In order to solve the above problems, the present invention provides a fixing part structure for fixing a resin fixed part to a fixing member through a hole, in which a cylindrical metal reinforcing member is embedded around the hole. Further, a plurality of locking claws protruding from the inner surface of the resin portion inside the metal reinforcing member toward the center of the hole are provided, and the fixing member inserted into the hole of the resin member is engaged with the locking claw. It is a structure for temporarily holding by locking the locking claw portion, and providing a recessed portion at an axial end portion of the cylindrical metal reinforcing member, and through the recessed portion, the outer circumference of the cylindrical metal reinforcing member. The resin members on the surface side and the inner peripheral surface side are combined, and the locking claw portion is provided at a position in the circumferential direction corresponding to the recessed portion of the metal reinforcing member .

Since the resin portion is provided inside the metal reinforcing member, the inner surface of the metal reinforcing member is not exposed and the inner surface of the metal reinforcing member can be prevented from being damaged. Moreover, since the inner surface of the metal reinforcing member is not exposed, rusting due to contact with the fixing member can be prevented.

It is a perspective view which shows the to-be-fixed part structure of the resin-made members in the front part of a vehicle body. FIG. 2 is a partially enlarged view of FIG. 1; FIG. 3 is a front view of FIG. 2; 4 is a front view of FIG. 3 with the nut and washer removed; FIG. 4 is a cross-sectional view taken along line AA of FIG. 3; FIG. FIG. 6 is a cross-sectional view taken along line BB of FIG. 5; It is a front view which shows a rectangular-shaped latching claw part. It is a front view which shows the fan-shaped latching claw part which is a modification of this invention. It is a modified example in which a notch portion is provided in the locking claw portion of the present invention.

The illustrated embodiments will be described in detail below with reference to the drawings shown in FIGS.
FIG. 1 is a perspective view showing a fixed portion structure of a resin member in the front portion of a vehicle body. FIG. 2 is a perspective view showing an enlarged fixed portion of the resin member in FIG. FIG. 3 is a front view of FIG. 2 as seen from the front of the vehicle body. FIG. 4 is a front view of FIG. 3 with the nut removed. 5 is a cross-sectional view taken along line AA of FIG. 3. FIG. 6 is a cross-sectional view taken along the line BB of FIG. 5. FIG. FIG. 7 is a front view showing a state in which the stud bolt is engaged with the thread groove of the stud bolt by the engaging claw. FIG. 8 is a front view showing a modification of the locking pawl. FIG. 9 is a front view showing a locking pawl portion according to a modified example of the present invention.

FIG. 1 shows a vehicle body front portion 1 of an automobile, and is a perspective view of a dash panel 3 viewed from the engine room 2 side. A plurality of wire harnesses 4 are piped to the front surface of the dash panel 3, and these wire harnesses 4 are held by a harness protector 5, which is a member to be fixed made of resin, as shown in FIG.

The harness protector 5 is made of synthetic resin, as shown in FIGS. and a fixed portion 52 attached to the fixing member 6 such as a stud bolt. The fixed portion 52 includes a pair of side walls 52a joined to the holding portion 51, a front wall 52b connecting the front ends of the side walls 52a, and a rear wall 52c connecting the rear ends of the side walls 52a. , and a fixed portion body portion 52 d facing the front surface of the dash panel 3 .

As shown in FIGS. 5 and 6, the fixed portion body portion 52d is provided with an oval mounting hole 52e as a hole portion for mounting to the fixing member 6 such as the stud bolt in the central portion of the plate surface. ing. A cylindrical metal reinforcing member 7 using an oblong cylindrical metal collar or the like is internally provided on the inner wall surface of the peripheral edge portion of the mounting hole 52e coaxially with the mounting hole 52e.

At both ends of the cylindrical metal reinforcing member 7, a plurality of recessed portions 7a are provided in the axial direction along the circumferential direction. 52 A of resin members and the resin member 52B of the outer peripheral side are couple|bonded. The resin member 52C that has flowed into the concave portion 7a joins the resin member 52A on the inner peripheral surface side of the metal reinforcing member 7 and the resin member 52B on the outer peripheral side. A flange portion 7b is provided at one end of the tubular metal reinforcing member 7 at its outer peripheral edge portion so as to extend outward.

As shown in FIG. 7, a pair of thin plate-like members protruding toward the center of the mounting hole 52e toward the fixing member 6 such as the stud bolt are provided on the inner peripheral surface side of the position corresponding to the recessed portion 7a. A locking claw portion 52f is protrudingly provided. The pair of locking claws 52f are formed integrally with the resin member 52A on the inner peripheral surface side, and extend diagonally inward in the direction away from the vehicle body (dash panel 3) from the opening side of the mounting hole 52e toward the inside. It is formed so as to protrude toward. As shown in FIG. 6, the pair of locking claws 52f are temporarily held by locking the locking claws 52f to the fixing member 6 from both sides so as to engage with the thread groove of the stud bolt. A nut 8 with a washer 8a is attached to the fixing member 6 by screwing, and the fixed portion 52 is fixed.

Next, the procedure for attaching the fixed portion structure of the resin member will be described.
A fixing member 6 such as a stud bolt is attached to the front surface of the dash panel 3 (see FIG. 1). On the other hand, the wire harness 4 is held by a harness protector 5, which is a fixed member (see FIG. 2). The harness protector 5 is composed of a holding portion 51 that holds the wire harness 4 and a fixed portion 52 that is provided integrally with the holding portion 51 and is attached to a fixing member 6 such as a stud bolt attached to the dash panel 3 . (see FIGS. 3 and 4). The harness protector 5 is assembled by fixing the fixed portion 52 to the fixing member 6 . The fixed portion 52 is assembled to the fixing member 6 through the mounting hole 52e. At this time, a pair of locking claws 52f are assembled inside the mounting hole 52e while being engaged with the fixing member 6 such as a stud bolt, and temporarily fixed to the fixing member 6 (see FIG. 6). Then, the nut 8 is tightened and screwed, and assembled to the fixing member 6. - 特許庁

8 and 9 show modifications of the locking claw portion 52f according to another embodiment of the present invention. The same parts as those in FIG. 7 are denoted by the same reference numerals, and the description of the same parts is omitted.
FIG. 8 shows the rectangular locking claw portion 52f of FIG. 7 provided with a fan-shaped locking claw portion 52g. It is possible to prevent breakage or the like at the time.
9, by providing notch portions 52h on both sides of the base end portion of the locking claw portion 52f, the locking claw portion 52f is torn at the notch portion 52h when the fixing member 6 such as a stud bolt is pulled out. Therefore, it is possible to prevent even the resin of the inner surface portion from being detached.

According to the above embodiment, the harness protector 5 includes the holding portion 51 that holds the wire harness 4, and the fixing member 6 such as a stud bolt that is provided integrally with the holding portion 51 and attached to the dash panel 3. It is composed of a fixed part 52 to be attached. The fixed portion 52 is provided with a fixed portion main body portion 52d facing the front surface of the dash panel 3, and the fixed portion main body portion 52d has a fixing member 6 such as a stud bolt attached to the central portion of the plate surface. An oblong mounting hole 52e is provided as a hole for mounting. A cylindrical metal reinforcing member 7 using an oblong cylindrical metal collar or the like is internally provided on the inner wall surface of the peripheral edge portion of the mounting hole 52e coaxially with the mounting hole 52e.
Since the tubular metal reinforcing member 7 using a metal collar or the like is embedded in the fixed portion 52 , excessive deformation of the resin member due to tightening of the nut 8 can be prevented. Further, since the resin wall surface is provided on the inner peripheral surface side of the metal reinforcing member 7, contact between the metal reinforcing member 7 and the fixing member 6 can be prevented, and damage to the inner peripheral surface of the metal reinforcing member 7 can be prevented. .

Since the harness protector 5 has a pair of locking claws 52f formed integrally with the fixed portion 52 made of a resin member, locking parts and the like formed separately inside the metal reinforcing member 7 are not required. can be omitted, and the number of parts and work time can be reduced. A tubular metal reinforcing member 7 using a metal collar or the like is embedded in the fixed portion 52, and a resin surface can be formed on the inner side. can be secured. In addition, since the pair of locking claws 52f that can easily temporarily hold the fixing member 6 can be provided on the inner peripheral surface side of the metal reinforcing member 7, the mounting accuracy of the parts can be improved and the workability of the assembly work can be improved. can be improved.

Furthermore, a recessed portion 7a is provided at an axial end portion of the cylindrical metal reinforcing member 7, and the resin member 52B on the outer peripheral surface side of the cylindrical metal reinforcing member 7 and the inner peripheral portion are formed through the recessed portion 7a. Since the resin member 52A on the surface side is integrally joined, it is possible to prevent the resin member 52A on the inner peripheral surface side on which the pair of locking claw portions 52f are formed from coming off. Since the resin member 52B on the outer peripheral surface side and the resin member 52A on the inner peripheral surface side of the metal reinforcing member 7 can be molded at once, the manufacturing process can be simplified, and the manufacturing cost and manufacturing time can be reduced. can be achieved.

Further, since the pair of locking claw portions 52f are provided at positions corresponding to the recessed portions 7a of the metal reinforcing member 7 in the circumferential direction, the flow of the resin filled during molding reaches the tips of the locking claw portions 52f. , It becomes easy to spread, and it is possible to prevent molding defects. A sufficient thickness of the resin member can be taken at the installation location of the locking claw portion 52f, and the strength and durability of the locking claw portion 52f can be improved.

The harness protector 5 made of a resin member has an oval attachment hole as a hole for attachment to the fixing member 6 such as the stud bolt in the central portion of the plate surface of the fixed portion body portion 52d of the fixed portion 52. 52e is provided.
By forming the shape of the mounting hole 52e into an elliptical shape, it is possible to absorb the tolerance due to mounting to the fixing member 6. As shown in FIG.
Since the pair of locking claws 52f are provided at the mutually corresponding vertex portions of the elliptical shape, positioning to the center of the elliptical mounting hole 52e is facilitated, and rattling can be reduced. .

Since the notch portions 52h are provided on both sides of the root portion of the locking claw portion 52f of the resin member, the notch portion can be removed by pulling out the fixing member 6 such as a stud bolt when it becomes necessary to remove the part. Since the locking claw portion 52f is torn at 52h, it is possible to prevent even the resin of the inner surface portion from being chipped off.

The present invention is not limited only to the above-described embodiment. A pair of locking claw portions 52f may be provided, or three or more pairs of locking claw portions 52f may be provided. The pair of locking claws 52f is not limited to rectangular locking claws, but may be fan-shaped locking claws 52g with tapered ends. Also, the notch portion 52h provided at the base end of the locking claw portion 52f may be provided on both sides or only on one side. Furthermore, although the recessed portions 7a of the metal reinforcing member 7 are provided at both ends in the longitudinal direction, they may be provided only on one side.
Both ends of the metal reinforcing member 7 are provided on the same plane as the resin member, and when a bolt or nut is tightened, the bearing surface comes into contact with the end surface of the metal reinforcing member 7 to ensure axial force. . The bearing surface strength of the member to be fixed can be ensured. In addition, it goes without saying that the present invention can be carried out with appropriate modifications within a range that does not change the technical scope of the present invention.

1 front part of vehicle body 2 engine room 3 dash panel 4 wire harness 5 harness protector (resin member)
51 holding portion 52 fixed portion (resin member)
52a Side wall 52b Front wall 52c Rear wall 52d Main body of fixed part 52e Mounting hole (hole)
52f, 52g Locking claw portion 52h Notch portion 6 Fixing member (stud bolt)
7 Metal reinforcing member (metal collar)
8 Nut

Claims (3)

In a fixing part structure in which a fixed part made of resin is fixed to a fixing member through a hole, a resin part inside the metal reinforcing member is attached to the resin member having a cylindrical metal reinforcing member inside the hole. A plurality of locking claws protruding toward the center of the hole from the inner surface of the resin member are provided, and the locking claws are locked and temporarily held by the fixing member inserted into the hole of the resin member. is a structure,
providing a recessed portion at an axial end portion of the cylindrical metal reinforcing member, and connecting the resin members on the outer peripheral surface side and the inner peripheral surface side of the cylindrical metal reinforcing member via the recessed portion;
A resin-made member fixing portion structure , wherein the locking claw portion is provided at a position in the circumferential direction corresponding to the recessed portion of the metal reinforcing member . 2. The fixing of a resin member according to claim 1 , wherein the hole portion of the resin member has an elliptical shape, and the engaging claw portions are provided at mutually corresponding vertex portions of the elliptical shape. department structure. 3. The fixing portion structure of a resin member according to claim 1 , wherein notches are provided on both sides of the root portion of the locking claw portion of the resin member.

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