JP2015169304A - Resin member having a fastening member with a collar - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a resin member having a flanged fastening member of which possibility of producing a damaged state is few.SOLUTION: A fixing hole 40 of a resin member 4 has a stopper part 41 for preventing a rotation of a flanged fastening member 20 against the resin member 4 while being oppositely facing against any one of an outer circumferential surface of a main body 21 of the flanged fastening member 20 or an outer circumferential surface of a flange part 22; and a supporting part 43 supporting the flanged fastening member 20 against the resin member 4 while being oppositely facing against any one of the outer circumferential surface of the main body 21 of the flanged fastening member 20 or the outer circumferential surface of the flange part 22. There is provided the resin member 4 having the flanged fastening member that the flanged fastening member 20 is supported under a state in which the extremity ends of a plurality of protrusions 44 arranged at the inner circumferential side of the supporting part 43 and showing a fine tip inward at the end are crushed.

Description

  The present invention relates to a resin member having a flanged fastening member.

  A support component including a support member that supports a wire drum of a wire-type window regulator on a vehicle body frame is known from Patent Document 1 and the like.

JP 2007-205118 A

By the way, in order to meet the demand for weight reduction of vehicles, an attempt has been made to change the support member of the support component from a metal member to a resin member.
In the support component of Patent Document 1, a fixing hole is formed around the drum housing space of the support member, and a nut with a flange is press-fitted into the fixing hole. The wire drum is fixed to the door panel via a support member by screwing a bolt inserted from the door panel side into the flanged nut.
However, in a resin support member, if the dimensions of the fixing hole vary, there is a risk that when the flanged nut is press-fitted into the fixing hole, excessive stress acts on the resin support member and the support member cracks. It was.

  Then, an object of this invention is to provide the resin member which has a fastening member with a collar with little possibility of a failure | damage.

The resin member having the flanged fastening member of the present invention,
A fastening member with a flange having a main body portion having a screw portion, and a flange portion having a diameter larger than that of the main body portion;
A resin member having a fixing hole into which the flanged fastening member is press-fitted, and
The fixing hole is
A rotation stop portion that opposes any one of the outer peripheral surface of the main body portion and the outer peripheral surface of the collar portion, and prevents rotation of the fastening member with the flange with respect to the resin member,
A support portion for supporting the flanged fastening member with respect to the resin member, opposite to the other of the outer peripheral surface of the main body portion and the outer peripheral surface of the collar portion;
The flanged fastening member is supported in a state in which tips of a plurality of protrusions provided on the inner peripheral side of the support portion and tapering inward are crushed.

  According to the resin member having the flanged fastening member according to the present invention, the flanged fastening member is supported in a state in which the tip of the protrusion of the support portion which is a part of the resin member is crushed. It is difficult for the force to act, and there is little risk of the resin member breaking.

In the resin member having the flanged fastening member according to the present invention,
The rotation stop portion is opposed to the outer peripheral surface of the main body portion, the support portion is opposed to the outer peripheral surface of the collar portion;
In the vertical direction along the press-fitting direction of the flanged fastening member, the distance from the upper end of the protrusion of the support portion of the resin member to the upper end of the locking portion is the most of the collar portion of the flanged fastening member. You may be shorter than the distance from the part protruded to the side to the lower end of the said main-body part.

  According to the resin member having the flanged fastening member according to the present invention, when the collared fastening member is press-fitted into the fixing hole, the collar portion is brought into contact with the protrusion of the support portion after the main body portion contacts the rotation stop portion. Easy to make. For this reason, after a main-body part becomes a correct attitude | position with respect to a rotation stop part, it is easy to support a collar part with a support part. For this reason, the workability of attaching the flanged fastening member to the resin member is high.

In the resin member having the flanged fastening member according to the present invention,
In the up-down direction along the press-fitting direction of the flanged fastening member, at least the upper portion of the protrusion may have a tapered shape that decreases in diameter from above to below.

  According to the resin member having the flanged fastening member according to the present invention, the tip of the flanged fastening member is guided to the upper part of the tapered protrusion, so that the collared fastening member can be easily pressed into the fixing hole.

In the resin member having the flanged fastening member according to the present invention,
A plurality of auxiliary projections that taper inward are provided on the inner peripheral surface of the stop portion,
The protrusion length of the protrusion may be greater than the protrusion length of the auxiliary protrusion.

According to the resin member having the flanged fastening member according to the present invention, when the fastening member is press-fitted into the resin member, the deformed auxiliary protrusion hardly protrudes in the press-fitting direction. For this reason, when fixing a resin member to another member using a fastening member, the protruded auxiliary | assistant protrusion part does not interfere with another member easily, and can fix a resin member stably.
Further, when the fastening member is press-fitted into the resin member, the main body portion or the collar portion of the fastening member facing the rotation stop portion of the resin member selectively comes into contact with the auxiliary protrusion, so that the shape of the rotation stop portion varies. Even if it is, a fastening member with a collar can be inserted in a stop part. In addition, after the fastening member is press-fitted into the resin member, the main body portion or the collar portion of the fastening member that faces the rotation stop portion of the resin member comes into contact with the small auxiliary protrusion, so that the collar-equipped fastening member slightly rotates. Immediately, the main body portion or the collar portion comes into contact with the rotation stop portion, and rotation is prevented.

  According to the said invention, the resin member which has a fastening member with a flange with little possibility of damage is provided.

It is the schematic of the window regulator to which embodiment of this invention is applied. It is a disassembled perspective view which shows the attaching part of a window regulator. It is sectional drawing which shows the attachment structure to the vehicle body frame of a window regulator. It is a figure for demonstrating the dimension of a nut and a nut receiving part. It is a figure similar to FIG. 2 which concerns on the 1st modification of this invention. It is a schematic diagram explaining the drum housing which concerns on the 2nd modification of this invention.

  Hereinafter, an example in which a resin member having a flanged fastening member according to an embodiment of the present invention is applied to the drum housing 4 of the window regulator 1 will be described in detail with reference to the drawings. The window regulator 1 is a device that is provided on a door panel of a vehicle and raises and lowers the window glass.

  FIG. 1 is a schematic diagram of a window regulator 1. As shown in FIG. 1, the window regulator 1 includes a guide rail 2 that is fixed to the door frame, and a slider base 3 that is movably attached to the guide rail 2. A window glass (not shown) is fixed to the slider base 3.

  The window regulator 1 further includes a resin drum housing 4 that houses a winding drum (not shown), a guide pulley 5, and a wire 6 that spans the winding drum and the guide pulley 5. The drum housing 4 is fixed to the lower part of the guide rail 2, and the guide pulley 5 is fixed to the upper part of the guide rail 2. The slider base 3 is fixed to the wire 6.

  A motor 7 is attached to the drum housing 4. The motor 7 rotates the take-up drum. When the wire 6 moves along the guide rail 2 by the rotation of the winding drum, the slider base 3 fixed to the wire 6 moves up and down. Thereby, the window regulator 1 raises / lowers the window glass.

The resin drum housing 4 has a plurality of fastening portions 10. The drum housing 4 has a resin portion made of resin and a metal nut 20 (see FIG. 3) press-fitted into the resin portion. The drum housing 4 is fixed to the door frame F (see FIG. 3) by screwing the metal bolt 30 to the nut 20 of the fastening portion 10. Similarly, the motor 7 is fixed to the drum housing 4 by screwing a metal bolt 30 to the fastening portion 10.
Thus, since the resin drum housing 4 is fixed to the door frame F by the metal nut 20 and the bolt 30, the drum housing 4 is firmly and easily fixed to the door frame F. In order to enable such a strong and simple attachment, a metal nut 20 is press-fitted into the resin drum housing 4. In particular, in the present embodiment, a nut with a collar that does not easily fall off from the drum housing 4 is used as the nut 20. Next, the press-fit structure of the nut 20 will be described.

(Details of fastening part 10)
FIG. 2 is an exploded perspective view showing the fastening portion 10 in an enlarged manner. As shown in FIG. 2, the fastening portion 10 is provided with a nut receiving portion 40 having a stepped hole shape (an example of a fixing hole). The nut 20 is press-fitted into the nut receiving portion 40.
The nut 20 includes a main body portion 21 having a screw portion 23 provided on the inner peripheral surface, and a flange portion 22 having a larger diameter than the main body portion 21. In the illustrated example, the screw portion 23 is provided through the main body portion 21 and the collar portion 22. The nut 20 is press-fitted into the nut receiving portion 40 in such a posture that the collar portion 22 is located on the upstream side in the press-fitting direction A and the main body portion 21 is located on the downstream side. The press-fitting direction A of the nut 20 is parallel to the screw shaft of the nut 20. In the present embodiment, when viewed from the press-fitting direction A, the main body portion 21 has a hexagonal shape, and the collar portion 22 has a circular shape.

  The nut receiving part 40 has a small-diameter main body receiving part 41 (an example of a locking part) and a large-diameter collar receiving part 43 (an example of a support part). The inner diameter of the main body receiving portion 41 is smaller than the inner diameter of the collar receiving portion 43. When the nut 20 is press-fitted into the nut receiving portion 40, the main body receiving portion 41 faces the main body portion 21 of the nut 20, and the collar receiving portion 43 faces the collar portion 22 of the nut 20.

(Bridge receiving part 43)
When viewed from the press-fitting direction A, the inner peripheral surface of the collar receiving portion 43 is formed in a circular shape corresponding to the collar portion 22 of the nut 20. The circular inner peripheral surface of the collar receiving portion 43 is formed to have a larger diameter than the outer peripheral surface of the collar portion 22 of the nut 20. The inner circumferential surface of the collar receiving portion 43 faces the outer circumferential surface of the collar portion 22 with a gap.

  A plurality of support projections 44 projecting inward are provided on the inner peripheral surface of the collar receiving portion 43. The support protrusion 44 is formed in a tapered shape inward. These support protrusions 44 are formed in a rib shape extending along the press-fitting direction A. In the present embodiment, the support protrusion 44 is formed in a substantially triangular prism shape.

  In the vertical direction along the press-fitting direction A, the upper portion of the support protrusion 44 has a tapered shape that decreases in diameter from above to below. As a result, when the nut 20 is press-fitted into the nut receiving portion 40, the tip of the nut 20 is guided to the center by the upper portion of the support protrusion 44, and the nut 20 is easily press-fitted into the nut receiving portion 40.

(Main body receiving part 41)
When viewed from the press-fitting direction A, the inner peripheral surface of the main body receiving portion 41 is formed in a hexagonal shape corresponding to the main body portion 21 of the nut 20. The hexagonal inner peripheral surface of the main body receiving portion 41 is set to be slightly larger than the outer peripheral surface of the main body portion 21 of the nut 20. The gap between the main body receiving part 41 and the main body part 21 is smaller than the gap between the collar receiving part 43 and the collar part 22. Thereby, when the nut 20 is slightly rotated, the inner peripheral surface of the main body receiving portion 41 immediately comes into contact with the outer peripheral surface of the main body portion 21 to prevent the nut 20 from rotating. That is, in the present embodiment, the main body receiving portion 41 functions as a rotation stop.

  A plurality of inwardly protruding auxiliary protrusions 42 are formed on the inner peripheral surface of the main body receiving portion 41. The auxiliary protrusion 42 is formed in a tapered shape toward the inside. These auxiliary protrusions 42 are formed in a rib shape extending in the press-fitting direction A. The protruding length of the auxiliary protrusion 42 from the inner peripheral surface of the main body receiving portion 41 to the inner tip of the auxiliary protruding portion 42 is from the inner peripheral surface of the collar receiving portion 43 to the inner tip of the support protruding portion 44. It is shorter than the protruding length of the support protrusion 44.

  3 is a cross-sectional view taken along the line III-III in FIG. As shown in FIG. 3, the fastening portion 10 configured as described above is fixed to the door frame F by a metal bolt 30. The bolt 30 passes through a through hole provided in the door frame F and is screwed to the nut 20 press-fitted into the nut receiving portion 40. In this way, the window regulator 1 is fixed to the door frame F.

  When the nut 20 is press-fitted into the nut receiving portion 40, the collar portion 22 inserts the nut 20 into the nut receiving portion 40 while crushing the tip of the support protrusion 44. For this reason, when the nut 20 is press-fitted into the nut receiving portion 40, the collar portion 22 of the nut 20 is supported with the tip of the support projection 44 being crushed. The flange portion 22 of the nut 20 is firmly supported by the support protrusion 44.

FIG. 4 is a diagram for explaining the dimensions of the nut 20 and the nut receiving portion 40. When press-fitting the nut 20 into the nut receiving portion 40, the nut 20 is moved from the state shown in FIG. 4A to the state shown in FIG.
As shown in FIG. 4A, the distance D <b> 1 from the upper end of the support protrusion 44 of the nut receiver 40 to the upper end of the main body receiver 41 is from the portion of the nut 20 that protrudes to the most side. The distance to the lower end of the main body 21 is set shorter than D2. By setting the distances D1 and D2 in this way, when the nut 20 is press-fitted, as shown in FIG. 4 (b), before the collar portion 22 contacts the support projection 44, the main body portion 21 is easily brought into contact with the main body receiving portion 41.
The outer peripheral surface of the main body portion 21 of the nut 20 is hexagonal, and the inner peripheral surface of the main body receiving portion 41 is also hexagonal. For this reason, when press-fitting the nut 20 into the nut receiving portion 40, it is necessary to match the postures of the nut 20 and the nut receiving portion 40 so that both hexagons are aligned. By setting the distances D1 and D2 as described above, the body portion 21 is brought into contact with the body receiving portion 41 before the collar portion 22 is fixed by the collar receiving portion 43, and the postures of the nut 20 and the nut receiving portion 40 are set. Can be combined. For this reason, the press-fitting work of the nut 20 becomes easy.

(Action / Effect)
According to the drum housing 4 according to this embodiment, when the nut 20 is press-fitted into the nut receiving portion 40, stress is applied only to the tip portion of the support protrusion 44 that is a part of the resin-made drum housing 4. Only the tip of the support protrusion 44 is deformed. For this reason, it is difficult for stress to act on the whole drum housing 4, and there is little possibility that the drum housing 4 will be cracked.

Further, when the drum housing 4 is resin-molded, a dimensional error may occur. Unlike the present embodiment, when the nut 20 is press-fitted into the nut receiving portion 40 where the support receiving portion 44 is not provided in the collar receiving portion 43, the inner peripheral surface of the nut receiving portion 40 is formed with a smaller diameter than the design value. If this happens, an excessive stress may act on the entire inner peripheral surface of the nut receiving portion 40.
However, in the drum housing 4 according to the present embodiment, only the tip portion of the support protrusion 44 provided on the collar receiving portion 43 contacts the main body portion 21. Since the entire inner peripheral surface of the collar receiving portion 43 does not come into contact with the collar portion 22, excessive stress does not act on the entire drum housing 4. For this reason, even if some dimensional error occurs at the time of manufacturing the drum housing 4, the nut 20 can be press-fitted without difficulty, and the yield of the drum housing 4 can be increased.

  Since the inner peripheral surface of the main body receiving portion 41 functions as a rotation stop, it is difficult to ensure a large gap between the inner peripheral surface of the main body receiving portion 41 and the outer peripheral surface of the main body portion 21. For this reason, it is difficult to ensure the protrusion length of the auxiliary protrusion 42 as large as the protrusion length of the support protrusion 44. Therefore, the support protrusion 44 can be formed larger by providing the support protrusion 44 in the collar receiver 43 instead of the main body receiver 41 functioning as a rotation stop. For this reason, even if the manufacturing error of the drum housing 4 is large, the nut 20 can be pressed into the nut receiving portion 40 without difficulty by crushing the tip portion of the large support protrusion 44.

By the way, when the nut 20 is press-fitted into the nut receiving portion 40, the nut 20 plastically deforms the tip portions of the auxiliary protrusion 42 and the support protrusion 44 in the press-fitting direction. For this reason, in FIG. 3, the plastically deformed auxiliary protrusion 42 may protrude toward the door frame F. However, according to the present embodiment, since the protrusion length of the support protrusion 44 of the collar receiving portion 43 is smaller than the protrusion length of the auxiliary protrusion 42 of the main body receiving portion 41, the auxiliary deformation that is plastically deformed when the nut 20 is press-fitted. The protrusion 42 is unlikely to protrude greatly toward the door frame F. For this reason, the protruding auxiliary protrusion 42 does not easily interfere with the door frame F, and the drum housing 4 can be stably fixed to the door frame F. Since the protruding length of the support protrusion 44 is large, the large surface formed by crushing the tip portion of the support protrusion 44 by the nut 20 firmly supports the collar portion 22 of the nut 20.
In addition, by providing the auxiliary projection 42 on the main body receiving portion 41, even if the inner peripheral surface of the main body receiving portion 41 is formed small due to a manufacturing error, the tip portion of the auxiliary protruding portion 42 is crushed. Unreasonable stress does not act on the entire fastening portion 10, and the nut 20 can be easily inserted into the main body portion 21. Further, since the auxiliary protrusion 42 is formed smaller than the support protrusion 44, the main body 21 comes into contact with the inner peripheral surface of the main body receiving portion 41 even if the nut 20 is slightly rotated, and the main body receiving portion 41 is moved to the nut. It can function as a 20 stop.

  In the above-described embodiment, the configuration in which the support protrusion 44 protrudes inward from the circular inner peripheral surface of the collar receiving portion 43 has been described, but the present invention is not limited to this. A plurality of support protrusions 44 may be provided on the inner periphery of the collar receiving portion 43 so as to be continuous along the circumferential direction.

(First modification)
In the above-described embodiment, the drum housing 4 using the nut 20 having the hexagonal main body portion 21 and the circular collar portion 22 as viewed from the press-fitting direction A has been described, but the present invention is not limited to this. .
FIG. 5 is a view similar to FIG. 2 of the drum housing 104 according to the first modification of the present invention. As shown in FIG. 5, a nut 120 having a circular main body portion 121 and a hexagonal flange portion 122 when viewed from the press-fitting direction A may be used. In this modification, the nut 120 is prevented from rotating by the hexagonal collar portion 122 contacting the collar receiving portion 143 having the hexagonal inner peripheral surface.

When viewed from the press-fitting direction A of the nut 120, the inner circumferential surface of the collar receiving portion 143 is formed slightly larger than the outer circumferential surface of the collar portion 122 of the nut 120. The inner peripheral surface of the main body receiving portion 141 is formed such that a large gap is formed between the outer peripheral surface of the main body portion 121 of the nut 120.
A plurality of support protrusions 142 are provided on the body receiving part 141 of the nut receiving part 140, and a plurality of auxiliary protrusions 144 are provided on the collar receiving part 143. The support protrusion 142 has a longer protrusion length than the auxiliary protrusion 144. That is, of the main body receiving portion 141 and the collar receiving portion 143, the main body receiving portion 141 that does not function as a rotation stop is provided with a support protruding portion 142 that is larger than the auxiliary protruding portion 144.

  In a state where the nut 120 is press-fitted into the nut receiving part 140, the support protrusion 142 supports the main body part 121 in a state where the tip part is crushed, and the auxiliary protrusion 144 is lightly in contact with the collar part 122 at the tip. Yes.

  Even with such a configuration, when the nut 20 is press-fitted into the nut receiving portion 140, stress is concentrated only on the tip portion of the support protrusion 142, and excessive stress does not act on the entire drum housing 104. For this reason, the drum housing 104 which is not easily damaged is provided.

(Second modification)
In the above description, the example in which the nut 20 as an example of the fastening member is press-fitted into the drum housing 4 has been described, but the present invention is not limited to this example.
FIG. 6 is a schematic diagram for explaining a drum housing 4 according to a second modification of the present invention. 6A is a perspective view of the bolt 220, and FIG. 6B is a cross-sectional view of the drum housing 4 into which the bolt 220 is press-fitted. As shown in FIG. 6, a bolt 220 may be press-fitted into the drum housing 4 as a fastening member instead of a nut. Since the bolt receiving part 240 of this modification is the same as the nut receiving part 40 of the embodiment described in FIG. 2, the description thereof is omitted.

  As shown in FIG. 6A, the bolt 220 includes a main body portion 221 having a hexagonal portion 221 a and a screw portion 221 b, and a collar portion 222 provided adjacent to the main body portion 221. In the press-fitting direction A, the hexagonal portion 221a is provided between the collar portion 222 and the screw portion 221b. The hexagonal part 221a of the main body part 221 has a hexagonal shape when viewed from the press-fitting direction A. The collar portion 222 has a circular shape when viewed from the press-fitting direction A of the bolt 220.

  Also in this modified example, when the bolt 220 is press-fitted into the bolt receiving portion 240, the stress is concentrated only on the tip portion of the support protrusion 244 provided on the collar receiving portion 243, and an unreasonable stress is applied to the entire drum housing 204. Does not work. For this reason, the drum housing 204 with little risk of breakage is provided.

  In the above-described embodiment and modification, the triangular prism-shaped support protrusion and auxiliary protrusion are illustrated and described. However, the shape of the support protrusion and auxiliary protrusion is a part of a cylinder and a part of a polygonal column. Or a combination thereof. Alternatively, the support protrusion and the auxiliary protrusion may be a plurality of protrusions that are discretely formed in the press-fitting direction.

In addition, although the example which applied this invention to the drum housing 4 of the window regulator 1 was demonstrated, this invention is not limited to this. The present invention can be widely applied to all resin members into which a metal fastening member is press-fitted.
Among these, it is preferable to apply this invention to the resin member for vehicles mounted in a vehicle especially. A relatively large stress repeatedly acts on the resin member mounted on the vehicle as the vehicle is accelerated or decelerated. Moreover, since it is repeatedly exposed to heat generated by a member such as an engine, thermal stress acts repeatedly. For this reason, since a large stress repeatedly acts on the resin member mounted on the vehicle from the metal fastening member, it is preferable to apply the present invention.

1: Window regulator 2: Guide rail 3: Slider base 4: Drum housing 5: Guide pulley 6: Wire 7: Motor 10: Fastening portion 20: Nut 21: Body portion 22: Collar portion 23: Screw portion 30: Bolt 40: Nut receiving part (fixing hole)
41: Main body support (rotation stop)
42: Auxiliary protrusion 43: Collar receiving part (supporting part)
44: Support protrusion A: Press-fit direction F: Door frame

Claims (4)

A fastening member with a flange having a main body portion having a screw portion, and a flange portion having a diameter larger than that of the main body portion;
A resin member having a fixing hole into which the flanged fastening member is press-fitted, and
The fixing hole is
A rotation stop portion that opposes any one of the outer peripheral surface of the main body portion and the outer peripheral surface of the collar portion, and prevents rotation of the fastening member with the flange with respect to the resin member,
A support portion for supporting the flanged fastening member with respect to the resin member, opposite to the other of the outer peripheral surface of the main body portion and the outer peripheral surface of the collar portion;
A resin member having a flanged fastening member, which is provided on the inner peripheral side of the support part and supports the flanged fastening member in a state in which tips of a plurality of protrusions tapering inward are crushed. The rotation stop portion is opposed to the outer peripheral surface of the main body portion, the support portion is opposed to the outer peripheral surface of the collar portion;
In the vertical direction along the press-fitting direction of the flanged fastening member, the distance from the upper end of the protrusion of the support portion of the resin member to the upper end of the locking portion is the most of the collar portion of the flanged fastening member. Shorter than the distance from the side protruding part to the lower end of the main body,
A resin member having the flanged fastening member according to claim 1.   3. The flanged fastening member according to claim 2, wherein at least an upper part of the protrusion has a tapered shape that decreases in diameter from above to below in the vertical direction along the press-fitting direction of the collared fastening member. Resin member. A plurality of auxiliary projections that taper inward are provided on the inner peripheral surface of the stop portion,
The resin member having a flanged fastening member according to any one of claims 1 to 3, wherein a protruding length of the protruding portion is larger than a protruding length of the auxiliary protruding portion.

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