JP2017210966A - Fastener - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fastener having good mounting workability.SOLUTION: This invention relates to a fastener 10 that is fixed to a shaft part of a mounted member under a state in which a mounting member is held in order to mount the mounting member to the mounted member. A storing part 20 has an insertion port 26 of the shaft part at one end part 28 to store the shaft part. A pair of legs 22 extend from a side of the one end part 28 of the storing part 20 toward outside. The pair of legs 22 can be flexed to approach the storing part 20 located between the pair of legs 22 and their extremity end sides have engaging parts to be engaged around a mounting hole of the mounting member. The storing part 20 has a pair of engaging parts engaged with the stored shaft part. The engaging part is inserted into the mounting hole of the mounting member from the side of the one end part 28 of the storing part 20 and engaged with the mounting member, the shaft part is inserted into the insertion port 26 to cause the engaging part to be engaged with the shaft part and the mounting member is mounted to the mounted member.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fastener for attaching an attachment member to a member to be attached.

  An under cover is provided under the vehicle body floor as an exterior part of the vehicle. The under cover is provided to protect the lower surface of the vehicle body and to suppress wind noise and air resistance during traveling. A plurality of bolts projecting downward are formed on the lower surface portion of the vehicle body panel, and an under cover is attached to the bolts via fasteners.

  Patent Document 1 discloses a first clip and a second clip for attaching an aerodynamic cover to a stud bolt standing from a vehicle body panel. The first clip includes a disk-shaped flange, a shaft portion depending from the flange, and a plurality of elastic locking pieces formed in the shaft portion. The second clip has a cylindrical portion that can receive the shaft portion of the first clip, and a flange formed at one end of the cylindrical portion.

  The edge of the attachment hole of the aerodynamic cover is sandwiched between the flanges of the first clip and the second clip of Patent Document 1, and the first clip and the second clip are attached to the attachment hole of the aerodynamic cover. Next, the stud bolt is pushed into the shaft portion of the first clip attached to the aerodynamic cover, and is locked to the elastic locking piece in the shaft portion, so that the aerodynamic cover is attached to the body panel.

JP 2009-96252 A

  In the technique disclosed in Patent Document 1, when the first clip and the second clip are attached to the aerodynamic cover, the first clip is inserted into the attachment hole of the aerodynamic cover, and then the shaft portion of the first clip is held down while holding the first clip. The cylindrical portion of the second clip is fitted into and attached. Thus, since it consists of two parts, a 1st clip and a 2nd clip, attachment workability | operativity is not good.

  This invention is made | formed in view of such a subject, The objective is to provide a fastener with good attachment workability | operativity.

  In order to solve the above problems, an aspect of the present invention is a fastener that is fixed to a shaft portion of a mounted member in a state in which the mounting member is held in order to mount the mounting member on the mounted member. And an at least one pair of leg portions extending outward from one end portion side of the accommodating portion. The pair of leg portions can be bent so as to approach the accommodating portion located between the pair of leg portions, and has at least a pair of engagement portions that engage around the attachment hole of the attachment member on the distal end side. The accommodating portion has a locking portion that is locked to the accommodated shaft portion. The engaging portion is inserted into the mounting hole of the mounting member from one end side of the housing portion, the engaging portion is engaged with the mounting member, the shaft portion is inserted into the insertion port, the locking portion is locked to the shaft portion, and the mounting member is Attach to the member to be attached.

  According to the present invention, it is possible to provide a fastener with good mounting workability.

Fig.1 (a) is the perspective view which looked at the front side of the fastener which concerns on embodiment, FIG.1 (b) is the perspective view which looked at the back side of the fastener which concerns on embodiment. FIG. 2 (a) is a side view of the fastener, FIG. 2 (b) is a top view of the fastener, and FIG. 2 (c) is a bottom view of the fastener. 3A is a cross-sectional view of the line segment AA of the fastener shown in FIG. 2B, and FIG. 3B is a line segment BB of the fastener shown in FIG. 2B. FIG. It is a figure for demonstrating the movement at the time of attaching a fastener to an undercover. It is a figure for demonstrating the movement at the time of attaching a fastener to a vehicle body panel. It is a figure for demonstrating the effect | action which suppresses disengagement of a fastener and an undercover in the case of an attachment operation | work.

  Fig.1 (a) is the perspective view which looked at the front side of the fastener 10 which concerns on embodiment, FIG.1 (b) is the perspective view which looked at the back side of the fastener 10 which concerns on embodiment. 2A is a side view of the fastener 10, FIG. 2B is a top view of the fastener 10, and FIG. 2C is a bottom view of the fastener 10. Here, the same or equivalent components and members shown in the drawings are denoted by the same reference numerals, and repeated description thereof is omitted as appropriate.

  The resin fastener 10 is used to attach the attachment member to the attached member. The mounting member is, for example, a resin undercover provided in the vehicle, and the mounted member is a metal body panel. Further, the attachment member is not limited to the under cover, and may be another exterior component.

  The under cover is provided under the floor of the vehicle body to protect the lower surface portion of the vehicle body and reduce wind noise and air resistance during traveling. A plurality of attachment holes are formed in the under cover, and the fastener 10 is engaged with each of the attachment holes.

  A plurality of bolt-shaped shaft portions are provided on the lower surface of the vehicle body panel so as to protrude downward. The shaft portion of the vehicle body panel is provided according to the position of the attachment hole of the under cover. The fasteners 10 are inserted into a plurality of attachment holes in the under cover and are engaged with each other to take a temporary fastening state. Next, the fastener 10 in a temporarily fastened state is locked to the shaft portion of the vehicle body panel to complete the mounting operation. Thereby, an under cover is hold | maintained in the state in which the fastener 10 was fixed to the vehicle body panel.

  Since the fastener 10 of the embodiment can be pushed into the attachment hole of the under cover to be temporarily attached, and the shaft part of the vehicle body panel can be pushed in to complete the attachment, the attachment workability is good. Details of the mounting operation will be described later.

  The fastener 10 includes an accommodating portion 20 that accommodates the shaft portion of the vehicle body panel, and a pair of leg portions 22 that engage with the under cover. The accommodating portion 20 includes an insertion port 26 formed in the one end portion 28, a flange portion 24 formed on the other end portion 30 side, a pair of first column portions 34 that connect the one end portion 28 and the other end portion 30, and It has a pair of 2nd pillar part 36 and the some latching | locking part 38 formed inside the accommodating part 20. As shown in FIG.

  As shown in FIG. 1A, an insertion port 26 is formed at the center of the disc-shaped one end portion 28. The shaft portion of the vehicle body panel is inserted into the housing space in the housing portion 20 from the insertion port 26. Around the insertion opening 26, an inclined surface 32 is formed as an insertion guide for the shaft portion. The inclined surface 32 is formed so as to be recessed from the outer periphery toward the insertion port 26. The inclined surface 32 is inclined so as to approach the other end 30 side along the radially inward direction.

  As shown in FIG. 1B, a recess 39 that can receive the tip of a predetermined jig such as a flathead screwdriver is formed on the end face of the other end 30. The other end 30 is provided for fitting the tip of a predetermined jig such as a flathead screwdriver into the recess 39 to rotate the fastener 10 when the under cover is removed from the vehicle body panel.

  The flange portion 24 is formed on the other end 30 side of the housing portion 20 and is formed so as to protrude outward in the radial direction from the outer peripheral surface of the housing portion 20. The flange portions 24 are spaced apart in the circumferential direction by a pair of notches 44 and are formed in a pair of arcs. When the flange portion 24 is inserted into the attachment hole of the under cover, it is caught by the edge of the attachment hole.

  As shown in FIG. 2A, the pair of first pillar portions 34 are opposed to each other, and a pair of second pillar portions 36 are formed therebetween. As shown in FIG. 2 (b), the pair of second pillar portions 36 are spaced apart from each other so that the shaft portion of the vehicle body panel can be inserted. The first column part 34 and the second column part 36 may be formed in a lattice shape from a rod, or may be formed in a cylindrical shape from a wall.

  As shown in FIG. 1A, the first pillar portion 34 and the second pillar portion 36 have a rectangular cross section, and are formed so that the longitudinal directions of the cross sections are parallel to each other. The extending direction of the wall surface of the 1st pillar part 34 and the 2nd pillar part 36 is parallel. Thereby, the shaping | molding die shape can be made into a pair of halves, and manufacturing cost can be held down. Further, the one end portion 28 and the other end portion 30 can be connected by four columns by the pair of first column portions 34 and the pair of second column portions 36, thereby improving the load resistance.

  As shown in FIG. 2A, six locking portions 38 projecting inward are formed on the inner surfaces of the pair of first pillar portions 34. As can be seen from the inside of the insertion port 26 in FIG. 2B, the minimum interval between the opposing locking portions 38 is formed smaller than the diameter of the insertion port 26. The locking portion 38 is formed so as to be able to bend as an elastic claw body, and the tip is locked in a spiral outer peripheral groove formed in the shaft portion of the vehicle body panel. Similarly to the leg portion 22, the locking portion 38 is formed so as to hang from the one end portion 28 side to the other end portion 30 side.

  As shown in FIG. 1A, the pair of leg portions 22 are formed so as to extend outward from the outer peripheral surface on the one end portion 28 side of the accommodating portion 20. The pair of leg portions 22 has a shape that is widened away from the housing portion 20 from the base toward the tip. The pair of leg portions 22 are formed to be able to bend so as to approach the accommodating portion 20 located between the pair of leg portions 22. The distal end 22 a of the leg portion 22 is expanded so as to be positioned on the radially outer side of the flange portion 24.

  The leg portion 22 has a first engagement portion 40 and a second engagement portion 42 (referred to simply as an “engagement portion” when these are not distinguished) at the tip. The engaging part of the leg part 22 engages around the attachment hole of an undercover. The first engaging portion 40 and the second engaging portion 42 engage with the front and back of the edge of the mounting hole, and suppress backlash in the vertical direction of the under cover.

  As shown in FIGS. 2B and 2C, the notch portion 44 formed in the flange portion 24 is formed so as to be able to enter when the leg portion 22 is bent so as to approach the accommodating portion 20. The Thereby, both the flange part 24 and the 1st engaging part 40 can be engaged with the edge of the attachment hole of an undercover, and load resistance can be improved.

  3A is a cross-sectional view taken along line AA of the fastener 10 shown in FIG. 2B, and FIG. 3B is a line B of the fastener 10 shown in FIG. 2B. It is sectional drawing of -B. The locking portions 38 respectively formed on the pair of first pillar portions 34 shown in FIG. 3A are formed slightly offset in the axial direction of the opposing ones. Thereby, it can be easily locked in the spiral groove of the shaft portion of the vehicle body panel.

  FIG. 3A and FIG. 3B show that the cross section of the second pillar portion 36 is formed in a rectangular shape, and the longitudinal direction of the cross section is the same as that of the first pillar portion 34. Thereby, the mold structure for molding can be simplified.

  As shown in FIG. 3A, the first engaging portion 40 is formed in a flat plate shape so that the tip of the leg portion 22 is bent. The overhanging width L1 of the first engaging portion 40 is formed to have a size that is more than half of the radial width L2 of the flange portion 24. Thereby, even if the accommodating part 20 and the leg part 22 bend, it can be hard to remove | deviate from the attachment hole of an undercover. In addition, when attaching to a plurality of attachment holes, it is possible to engage with each other while allowing a positional shift with respect to each attachment hole.

  Further, the overhang width L1 of the first engagement portion 40 is formed to be larger than the overhang width L3 of the second engagement portion 42. Accordingly, the second engagement portion 42 can easily pass through the attachment hole of the under cover, and the first engagement portion 40 can hardly pass through the attachment hole, and the first engagement portion 40 can be prevented from passing through the edge of the attachment hole. It can be hard to come off.

  As shown in FIG. 3A, the end portion on the base side of the leg portion 22 is connected to the enlarged diameter surface 20 a of the accommodating portion 20. Thereby, the space | interval which bends so that the leg part 22 may approach the accommodating part 20 can be enlarged.

  FIG. 4 is a view for explaining the movement when attaching the fastener 10 to the under cover 12. 4A shows a state before the fastener 10 is inserted into the mounting hole 12a of the under cover 12, and FIG. 4B shows a state in the middle of inserting the fastener 10 into the mounting hole 12a. c) shows a temporary fastening state in which the fastener 10 is attached to the under cover 12.

  As shown in FIG. 4A, the diameter of the mounting hole 12 a is smaller than the maximum facing distance between the pair of leg portions 22 in the free state and smaller than the outer diameter of the flange portion 24. The operator pushes the fastener 10 into the attachment hole 12a from the one end portion 28 side. In addition, when it attaches under the floor of a vehicle body panel, the upper surface 12b of the undercover 12 is located inside (back side), and the lower surface 12c is located outside (front side).

  As shown in FIG. 4B, the pair of leg portions 22 is bent so as to come into contact with the edge of the mounting hole 12 a and approach the accommodating portion 20, and enters the notch portion 44. When the fastener 10 is further pushed in, as shown in FIG. 4C, the second engaging portion 42 gets over the edge of the mounting hole 12a, and the second engaging portion 42 is engaged with the upper edge of the mounting hole 12a. The first engaging portion 40 engages with the lower edge of the attachment hole 12a. The flange portion 24 comes into contact with the lower surface 12c of the under cover 12 and excessive pushing is restricted. Thus, since the worker can temporarily fix the fastener 10 to the under cover 12 simply by pushing the fastener 10 into the mounting hole 12a, the mounting operation is easy. Further, by providing the first engaging portion 40, even if the diameter of the mounting hole 12a varies, it is possible to engage the edge of the mounting hole 12a without backlash.

  As shown in FIG. 4A, the diameter L4 of the mounting hole 12a is smaller than the distance L5 from the distal end 22a of the leg portion 22 to the first column portion 34 on the far side of the accommodating portion 20 in the free state. Formed. Thereby, even if it is a case where the accommodating part 20 slip | deviates to the one leg part 22 side in the attachment hole 12a, the engagement of the 1st engaging part 40 can be maintained and it can be hard to remove | deviate from the attachment hole 12a.

Further, the diameter L4 of the mounting hole 12a and the distance L6 from the tip 22a of the leg portion 22 in the free state to the first column portion 34 on the side closer to the accommodating portion 20 satisfy the following relational expression (1).
L4 <(2 × L6) (1)
The space | interval L6 shows the length in the attachment hole 12a expanded to the maximum from the accommodating part 20 of the leg part 22 in a free state. By satisfying the relational expression (1) indicating that the diameter L4 of the mounting hole 12a is smaller than twice the interval L6, the leg portion 22 is provided so as to be sufficiently bent, and the fastener 10 can be hardly detached from the mounting hole 12a.

Moreover, the sum total of the outer width L7 of the accommodating part 20 and the expansion width L8 of the leg part 22 is larger than the diameter L4 of the attachment hole 12a. The spread width L8 of the leg portion 22 refers to the distance from the base of the leg portion 22 to the bottom of the engaging portion in the opposing direction.
L4 <(L7 + L8) (2)
As a result, the leg portion 22 can be engaged with the edge of the mounting hole 12a without the one leg portion 22 with respect to the mounting hole 12a, and the engagement is achieved even if the accommodating portion 20 is displaced in the mounting hole 12a. I can't come off.

  FIG. 5 is a view for explaining the movement when attaching the fastener 10 to the vehicle body panel 14. FIG. 5A shows a state before the under cover 12 is attached to the vehicle body panel 14. The operator aligns the one end portion 28 of the fastener 10 with the shaft portion 14a of the vehicle body panel 14 and lifts the fastener 10 upward. Even if the tip end of the shaft portion 14 a comes into contact with the inclined surface 32 of the one end portion 28, the shaft portion 14 a is guided to the insertion port 26 by the inclination.

  If the distal end of the shaft portion 14 a is guided to the insertion port 26, the fastener 10 is lifted upward to accommodate the shaft portion 14 a in the housing portion 20. As shown in FIG. 5B, a spiral groove is formed on the outer peripheral surface of the shaft portion 14a, and the locking portions 38 are locked in the grooves. Thereby, the fastener 10 in a state of holding the under cover 12 can be fixed to the shaft portion 14a. In this way, it is easy to simply push in the mounting operation to the shaft portion 14a.

  In addition, by inserting the tip of a predetermined jig such as a flat-blade screwdriver into the recessed portion 39 of the attached fastener 10 and rotating the fastener 10, the engaging portion 38 and the shaft portion 14 a are locked. It is possible to cancel.

  FIG. 6 is a diagram for explaining the action of suppressing the detachment of the fastener 10 and the under cover 12 during the mounting operation. FIG. 6A shows a state before the shaft portion 14 a is inserted into the housing portion 20. There are a plurality of attachment holes 12a in the under cover 12, and the fasteners 10 are attached to each of the attachment holes 12a, and a plurality of shaft portions 14a are provided in each. When a plurality of fasteners 10 are fixed to the shaft portion 14a, misalignment may occur between any of the shaft portions 14a and the insertion opening 26 of the fastener 10 due to factors such as dimensional tolerances.

  As shown in FIG. 6A, the shaft portion 14a and the insertion slot 26 are misaligned. When the fastener 10 is moved upward as it is, the shaft portion 14a comes into contact with the inclined surface 32 of the one end portion 28 as shown in FIG. When the fastener 10 is pushed up with the shaft portion 14a in contact with the inclined surface 32, the inclined surface 32 receives a load in the right direction in the figure.

  As shown in FIG. 6C, due to the load that the inclined surface 32 of the fastener 10 receives from the shaft portion 14 a, the housing portion 20 moves and the shaft portion 14 a enters the insertion port 26. At this time, one leg portion 22 is bent so as to expand, and the other leg portion 22 is bent so as to approach the housing portion 20 so that the engagement between the mounting hole 12a and the engaging portion is not released. Configured.

  As described above, the fastener 10 can be fixed to the shaft portion 14a while maintaining the engagement by the bending of the pair of leg portions 22 even if the accommodating portion 20 is displaced in the mounting hole 12a. . In addition, what is necessary is just to rotate the fastener 10 axially, when the direction of position shift of the axial part 14a and the insertion port 26 differs from the opposing direction of a pair of leg part 22. FIG.

  Furthermore, the locking portion 38 and the leg portion 22 are both elastic bodies that can be bent and extend from the housing portion 20. The plurality of locking portions 38 are formed so as to be able to bend in the opposing direction of the pair of leg portions 22, and the locking portions 38 and the leg portions 22 are formed so as to be able to be bent in substantially the same direction. The plurality of locking portions 38 are formed between the pair of leg portions 22, and can be deformed in the opposing direction of the pair of leg portions 22. In addition, the plane along the bending direction of the leg portion 22 and the plane along the bending direction of the locking portion 38 are substantially parallel. Thereby, not only the bending of the leg part 22 but also the displacement of the locking part 38 in the housing part 20 can absorb the positional deviation between the shaft part 14a and the central axis of the insertion port 26, and the mounting work is further facilitated. In addition, it is difficult to disengage the attachment hole 12a from the engagement portion and the outer peripheral groove of the shaft portion 14a from the engagement portion 38, so that a high holding force can be obtained.

  Although the leg portion 22 and the locking portion 38 are elastic claws, the leg portion 22 is formed to have a length extending from the base larger than that of the locking portion 38 and is more easily bent than the locking portion 38. The outer elastic claw body (leg part 22) is made larger and the inner elastic claw body (locking part 38) is made smaller. A relatively small elastic nail can be made difficult to break.

  The present invention is not limited to the above-described embodiments, and various modifications such as design changes can be added to the embodiments based on the knowledge of those skilled in the art. Examples may also be included within the scope of the present invention.

  In the embodiment, the aspect in which the fastener 10 is used for attaching the exterior part of the vehicle to the vehicle body panel is shown, but the present invention is not limited to this aspect. For example, you may use in order to attach interior parts, such as a trim member and an instrument panel, to a vehicle body panel. Further, the attachment member is not limited to the under cover 12 and may be an exterior member attached to the upper surface of the vehicle body panel located on the ceiling.

  In the embodiment, the embodiment in which the pair of leg portions 22 is formed on the fastener 10 is shown, but the embodiment is not limited thereto. For example, three or more legs may be formed, and notches 44 may be formed in the flange portion 24 according to the legs. Although the embodiment in which six locking portions 38 in the accommodating portion 20 are formed has been described in the embodiment, the present invention is not limited to this mode, and for example, two to five or seven or more locking portions 38 may be formed.

  In the embodiment, a mode in which the shaft portion 14a of the vehicle body panel 14 has a spiral groove is shown, but the mode is not limited thereto. The shaft portion 14a may be a rod-shaped body, and a step portion or a protrusion that can be locked by the locking portion 38 may be formed on the outer peripheral surface thereof.

  DESCRIPTION OF SYMBOLS 10 Fastener, 12 Under cover, 12a Mounting hole, 12b Upper surface, 12c Lower surface, 14 Car body panel, 14a Shaft part, 20 Storage part, 22 Leg part, 24 Flange part, 26 Insertion port, 28 One end part, 30 Other end part 32 inclined surface, 34 first pillar part, 36 second pillar part, 38 locking part, 39 recessed part, 40 first engaging part, 42 second engaging part, 44 notch part.

Claims (4)

In order to attach the attachment member to the attachment member, the fastener is fixed to the shaft portion of the attachment member while holding the attachment member,
A housing portion for housing the shaft portion, having an insertion port of the shaft portion at one end,
And at least a pair of legs extending outward from one end side of the housing portion,
The pair of leg portions can be bent so as to approach the housing portion located between the pair of leg portions, and at least a pair of engagement portions that engage around the attachment hole of the attachment member on the distal end side. Have
The storage portion has a locking portion that locks to the stored shaft portion,
Inserted into the mounting hole of the mounting member from one end side of the housing portion, the engaging portion is engaged with the mounting member, the shaft portion is inserted into the insertion port, and the locking portion is locked to the shaft portion. A fastener, wherein the attachment member is attached to the attachment member.   The engaging portion has a first engaging portion that engages with the surface around the mounting hole of the mounting member, and a second engaging portion that engages with the back surface around the mounting hole of the mounting member. The fastener according to claim 1. A flange portion formed so as to protrude from the outer peripheral surface on the other end side of the housing portion;
The fastener according to claim 1, wherein the flange portion has a cutout portion formed so that the pair of leg portions bent so as to approach the housing portion can enter.   The fastener according to any one of claims 1 to 3, wherein the pair of locking portions are formed between the pair of leg portions and can be bent in a direction opposite to the pair of leg portions. .

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