JP6704746B2 - Fasteners and parts mounting structure - Google Patents

Description

The present invention relates to a fastener for attaching a component to a member to be attached, and a component attachment structure including the component and the fastener.

Patent Document 1 discloses a fixing structure for attaching a vehicle decoration member to a vehicle body. The decorative member has a boss member extending from the back surface, and is attached to the vehicle body using clips that sandwich the boss member.

The clip disclosed in Patent Document 1 has a U-shaped main body, a flange formed at the base end on the opening side of the main body, and a pair of elastic lock leg portions extending from the base end side. The shoulders of the pair of elastic lock legs are engaged with the edges of the mounting hole to prevent the clip from slipping out of the mounting hole. It is disclosed that there are a plurality of types of boss members, and the thicknesses of the boss members at positions where a pair of elastic lock leg portions abut are different.

U.S. Pat. No. 7,300,809

In the technique disclosed in Patent Document 1, the pulling force for pulling out the clip in the attached state from the attachment hole is changed by changing the thickness of the boss member using the same clip. However, it is difficult to increase the difference between the lower limit value and the upper limit value of the withdrawal force due to the restriction of the size of the mounting hole and the securing of the rigidity of the boss member.

The present invention has been made in view of such a problem, and an object thereof is to provide a technique of lowering the lower limit value of the withdrawal force for pulling a fastener out of a mounting hole using the same fastener.

In order to solve the above-mentioned problem, an aspect of the present invention is a fastener for attaching a component to a member to be attached, and a pair of leg portions facing each other and a connecting portion for connecting the tip ends of the pair of leg portions. And The pair of leg portions has a pair of engaging portions that extend from the base end side toward the distal end side and that engage with the edges of the mounting holes of the mounted member while sandwiching the first mounting portion of the component. The pair of engaging portions can have their tips intersect with each other while sandwiching the first mounting portion.

Another aspect of the present invention is a component mounting structure. The component mounting structure includes a component and a fastener for mounting the component on a member to be mounted. The fastener has a pair of legs that face each other and a connecting portion that connects the distal ends of the pair of legs. The component has a first attachment portion sandwiched between a pair of legs, and a cutout portion formed so as to be cut out on the tip side of the first attachment portion. The pair of leg portions has a pair of engaging portions that extend from the base end side toward the distal end side and that engage with the edges of the mounting holes of the mounted member while sandwiching the first mounting portion of the component. The pair of engaging portions are capable of intersecting with each other by inserting their first ends into the notch portions while sandwiching the first attaching portion.

According to the present invention, it is possible to provide a technique capable of lowering the lower limit value of the withdrawal force for withdrawing the fastener from the attachment hole.

It is a figure which shows the component attachment structure which consists of components and a fastener. It is a perspective view of a fastener. 3(a) is a side view of the fastener, FIG. 3(b) is a front view of the fastener, and FIG. 3(c) is a bottom view of the fastener. It is a figure for demonstrating the 1st attachment part of a component. 5A is a front view of the first mounting portion of the component, FIG. 5B is a side view of the first mounting portion of the component, and FIG. 5C is a first mounting portion of the component. It is a bottom view of a part. It is a perspective view for explaining the 2nd attachment part of a part. FIG. 7A is a front view of the second mounting portion of the component, and FIG. 7B is a bottom view of the second mounting portion of the component. It is a figure which shows the state which the fastener was engaging with the 2nd attachment part. It is a figure for demonstrating the attachment operation|movement to the attachment hole of the to-be-attached member of a 1st attachment part and a fastener. It is a figure for demonstrating the attachment operation|movement to the attachment hole of the to-be-attached member of a 2nd attachment part and a fastener.

FIG. 1 is a diagram showing a component mounting structure 10 including a component 22 and a fastener 20. FIG. 1A is a view looking down on the base end side of the fastener 20, and FIG. 1B is a view looking up from the tip side of the fastener 20.

The component attachment structure 10 is used to attach the component 22 to a member to be attached. The component 22 has a main body portion 56, a first mounting portion 49 and a second mounting portion (not shown). The main body 56 of FIGS. 1A and 1B shows a part thereof, and may be, for example, a cover of an armrest of a seat, an operation panel provided with a switch element for opening and closing a window, or the like.

A plurality of first attachment portions 49 are provided on the component 22, and are formed so as to hang from the back surface of the main body portion 56. In addition to the first mounting portion 49, the component 22 is provided with a second mounting portion described later. Both the first attachment portion 49 and the second attachment portion formed on one component are attached to the plurality of attachment holes formed on the attached member by the same fastener 20.

The fastener 20 is locked by sandwiching the first mounting portion 49 and is integrated with the first mounting portion 49. When the first attachment portion 49 and the fastener 20 are inserted into the attachment hole, the fastener 20 engages with the edge of the attachment hole and is prevented from coming off. The fasteners 20 and components 22 will be described in detail with reference to the new drawings.

FIG. 2 is a perspective view of the fastener 20. 3(a) is a side view of the fastener 20, FIG. 3(b) is a front view of the fastener 20, and FIG. 3(c) is a bottom view of the fastener 20.

The fastener 20 includes a pair of leg portions 24, a connecting portion 26 that connects the pair of leg portions 24, and a pair of flange portions 28 that are hooked on the front edges of the mounting holes. The connecting portion 26 connects the tip ends of the pair of leg portions 24, and the pair of flange portions 28 extends outward in the facing direction from the base end sides of the pair of leg portions 24. In a modification, the flange portion 28 may be provided on either one of the pair of leg portions 24.

The tip of the fastener 20 is the tip in the insertion direction into the mounting hole. Further, the direction in which the pair of leg portions 24 face each other is referred to as an opposite direction, the direction in which the leg portions 24 extend from the base end to the distal end is referred to as an extending direction or a hanging direction, and the direction orthogonal to the facing direction and the extending direction is the width direction. That. The extending direction is along the inserting direction into the mounting hole, and is along the direction in which the first mounting portion 49 hangs from the back surface of the main body portion 56.

The pair of legs 24 have the same shape. The leg portion 24 has a pair of support portions 32 and an engagement portion 30. As shown in FIG. 3B, the pair of support portions 32 are separated from each other in the width direction and are formed in parallel in a columnar shape. The base ends of the pair of support portions 32 are connected to the flange portion 28, and the tip ends thereof are connected to the connecting portion 26.

Locking portions 40 that project inward are formed on the inner surfaces of the pair of support portions 32, respectively. The locking portion 40 is formed at a substantially central position of the support portion 32 and locks with the first mounting portion 49 of the component 22 to assemble the fastener 20 to the component 22.

The engagement portion 30 is formed between the pair of support portions 32. The engagement portion 30 extends from the flange portion 28 on the base end side toward the tip and has a free end. As shown in FIG. 2, the base end portion 30 a of the engagement portion 30 is located outside the base end portion of the support portion 32 in the facing direction. The engaging portion 30 bends in the opposite direction when it is inserted into the mounting hole. The engagement portion 30 has an engagement surface 42, a curved surface 44, a segment 46 and a recess 48.

The engagement surface 42 is inclined so as to project outward in the facing direction toward the tip, and engages with the back edge of the mounting hole. The engagement surface 42 projects outward from the support portion 32 in the facing direction. The curved surface 44 is curved inward in the facing direction from the end portion of the engagement surface 42 on the distal end side. The inner surface of the engaging portion 30 is curved inward in the facing direction along the curve of the curved surface 44.

The recess 48 is formed by recessing the tip of the engaging portion 30 so as to be cut out. The concave portion 48 is formed so as to cut out approximately half of the widthwise length of the engaging portion 30. The piece 46 is formed by a recess 48 at the tip of the engaging portion 30.

As shown in FIGS. 3B and 3C, in the pair of engaging portions 30, the pieces 46 and the recesses 48 are alternately arranged, and the pieces 46 are arranged so as not to face each other. As a result, when the pair of engaging portions 30 approach each other, the pieces 46 do not interfere with each other, and the piece 46 formed in one engaging portion 30 enters the recess 48 formed in the other engaging portion 30. The sections 46 can cross each other. Therefore, the amount of expansion of the pair of engaging portions 30 in the facing direction can be reduced to increase the inclination angle of the engaging surface 42 with respect to the back surface of the mounted member, and the lower limit value of the pulling force for pulling the fastener 20 out of the mounting hole. Can be lowered.

FIG. 4 is a diagram for explaining the first mounting portion 49 of the component 22. 5(a) is a front view of the first mounting portion 49 of the component 22, FIG. 5(b) is a side view of the first mounting portion 49 of the component 22, and FIG. FIG. 6 is a bottom view of the first mounting portion 49 of the component 22.

The first attachment portion 49 hangs down from the main body portion 56 and is formed in an H-shaped cross section as shown in FIG. 5C. The first mounting portion 49 has a wall portion 50, a pair of side wall portions 52, a pair of locking holes 54, and a cutout portion 58. The direction in which the pair of side wall portions 52 face each other is along the width direction of the fastener 20, and the perpendicular direction of the wall portion 50 is along the opposite direction of the fastener 20.

The wall portion 50 is formed in a flat plate shape and is vertically provided on the back surface of the main body portion 56. The pair of side wall portions 52 are continuously provided on both sides of the wall portion 50 and are formed from the main body portion 56 to the tip of the wall portion 50. Since the fastener 20 is housed between the pair of side wall portions 52, the pair of side wall portions 52 protect the fastener 20 that is locked to the wall portion 50, and the fastener 20 does not come off or be damaged during transportation. You can

The pair of locking holes 54 are formed in the middle of the wall portion 50 so as to be separated in the width direction as shown in FIG. The locking portion 40 of the fastener 20 is inserted and locked in the locking hole 54.

The cutout portion 58 is formed so as to cut out the front end portion 50 a of the wall portion 50, and is located closer to the front end side than the locking hole 54. The notch portion 58 is formed in a central portion in the width direction of the tip portion 50a of the wall portion 50 so as to be recessed in a rectangular shape toward the base end side. The tip of the engaging portion 30 of the fastener 20 can be inserted into the cutout portion 58. The tip portion 50a of the wall portion 50 restricts the movement of the fastener 20 toward the proximal end side when the fastener 20 is inserted into the mounting hole.

FIG. 6 is a perspective view for explaining the second mounting portion 60 of the component 22. Further, FIG. 7A is a front view of the second mounting portion 60 of the component 22, and FIG. 7B is a bottom view of the second mounting portion 60 of the component 22.

The second mounting portion 60 is different from the first mounting portion 49 shown in FIG. 4 in that the notch portion 58 is not formed at the tip and the protruding portion 64 is formed. The second mounting portion 60 is retained by the fastener 20 in the mounting hole of the mounted member.

The second mounting portion 60 has a wall portion 62, a pair of side wall portions 52, a pair of locking holes 54, and a plurality of protrusions 64. The wall portion 62 is formed in a flat plate shape, and is vertically provided on the back surface of the main body portion 56. No cutout portion is formed on the front end side of the wall portion 62. This limits the approach of the pair of engaging portions 30 of the fastener 20.

The plurality of protrusions 64 are formed so as to protrude on both sides of the wall 62, and are formed in a rib shape along the extending direction. The plurality of protrusions 64 are formed between the pair of locking holes 54 as shown in FIG. The surfaces of the plurality of protrusions 64 are formed flat from the base end side to the tip end side. As a result, the engaging portion 30 of the fastener 20 easily slides on the protrusion 64.

FIG. 8 shows a state in which the fastener 20 is locked to the second attachment portion 60. With the pair of engagement portions 30 sandwiching the second attachment portion 60, the segment 46 that is the tip of the engagement portion 30 contacts the protrusion 64. On the other hand, the recess 48 does not contact the protrusion 64.

The pair of engaging portions 30 are in a state in which the bending so as to approach each other is limited in a state in which the engaging portions 30 are expanded in the facing direction. Thereby, the removal force when pulling out the fastener 20 and the second mounting portion 60 from the mounting hole of the mounted member becomes larger than when pulling out the fastener 20 and the first mounting portion 49 from the mounting hole. Can be configured to.

Further, by attaching the first attachment portion 49 and the second attachment portion 60 provided on the same component 22 to the attached member with the same fastener 20, the removal force of the first attachment portion 49 is made relatively small, and The removal force of the mounting portion 60 can be made relatively large. Further, by forming the cutout portion 58 in the first attachment portion 49 and forming the protrusion 64 in the second attachment portion 60, the difference between the expansion amounts of the pair of engagement portions 30 in the facing direction is increased. As a result, the difference in the withdrawal force between the first mounting portion 49 and the second mounting portion 60 can be increased.

For example, when the elongated armrest cover is the component 22, a plurality of mounting portions are arranged on the back surface of the armrest cover along the longitudinal direction. When the user grips one end of the armrest cover and tries to pull it out from the attachment hole, the armrest cover may be largely warped and damaged if the removal force of the attachment portion on the center side is strong. Second mounting portions 60 are formed on both end sides of the armrest cover, and first mounting portions 49 are formed on the center side of the armrest cover. Thereby, both end sides of the armrest cover can be firmly attached. When the armrest cover is removed due to a switch failure or the like, the user can easily pull out the central first mounting portion 49 with a low pulling force by pulling out the second mounting portions 60 on both end sides. Can be easily removed without damage.

Further, since the first attachment portion 49 and the second attachment portion 60 provided on the same component 22 can be retained in the attachment hole with one type of fastener 20, the work of assembling the fastener 20 to the component 22 is facilitated, It is possible to reduce the manufacturing cost by sharing the fastener 20.

When the first attachment portion 49 and the second attachment portion 60 are attached using the same fastener 20, if the difference between the upper limit value and the lower limit value of the withdrawal force for withdrawing the fastener 20 from the attachment hole can be made sufficiently large, for example, By changing the inclination angle of the mating surface 42, it is possible to raise the upper limit value and the lower limit value as a whole and increase the removal force while maintaining the difference in the removal forces. Therefore, even if the lower limit value of the withdrawal force of the fastener 20 is lowered, it is possible to change the inclination angle of the engagement surface 42 and secure a desired withdrawal force.

FIG. 9 is a view for explaining the operation of attaching the first attachment portion 49 and the fastener 20 to the attachment hole 12a of the attached member 12. The mounting hole 12a has a rectangular shape.

As shown in FIG. 9A, when the worker pushes the component 22 toward the mounted member 12, the first mounting portion 49 and the fastener 20 are inserted into the mounting hole 12a from the tips. The fastener 20 is inserted into the mounting hole 12a, and the curved surface 44 of the engaging portion 30 comes into contact with the hole edge on the front side of the mounting hole 12a, so that the pair of engaging portions 30 approach each other, as shown in FIG. 9B. Bend as you do.

When pushed further, the pair of engaging portions 30 further approaches as shown in FIG. 9C, and the pieces 46 intersect with each other in the facing direction. When the upper end of the curved surface 44 exceeds the mounting hole 12a, the pair of engaging portions 30 expands due to the restoring force, and the engaging surface 42 engages with the back edge of the mounting hole 12a as shown in FIG. 9D. To meet. In this way, the pair of engaging portions 30 are inserted into the mounting hole 12a from the tip end side with the first mounting portion 49 of the component 22 sandwiched therebetween and engage with the back edges of the mounting hole 12a, and the mounting work is completed. ..

The pieces 46 of the pair of engaging portions 30 enter the notch portion 58 formed at the tip end side of the first attaching portion 49 with the first attaching portion 49 interposed therebetween, and intersect each other. As a result, the pair of engaging portions 30 can be brought closer to each other, and the withdrawal force for withdrawing the first attachment portion 49 and the fastener 20 from the attachment hole 12a can be reduced.

With the pair of engaging portions 30 approaching each other and the pair of segments 46 intersecting each other, the recess 48 of one engaging portion 30 abuts the other engaging portion 30 so that the pair of engaging portions 30 approach each other. regulate. By restricting the approaching of the engaging portions 30 to each other, the withdrawal force is reduced, but a desired withdrawal force can be secured and the engaged state can be maintained.

Further, when the pair of engaging portions 30 approach each other, the inner surface of the engaging portion 30 does not contact the first mounting portion 49, that is, the upper edge of the cutout portion 58, and one recess 48 is inserted into the other engaging portion 30. Access is restricted to 30. Thereby, the approaching portion of the engaging portion 30 is not limited to the first mounting portion 49, and the bending margin of the engaging portion 30 can be secured for a long time, so that the engaging portion 30 can be easily bent.

FIG. 10 is a diagram for explaining an attaching operation of the second attachment portion 60 and the fastener 20 to the attachment hole 12a of the attached member 12. The mounting hole 12 a of the second mounting portion 60 is the same as the first mounting portion 49.

As shown in FIG. 10A, when the worker pushes the component 22 toward the mounted member 12, the second mounting portion 60 and the fastener 20 are inserted into the mounting hole 12a from the tip. The fastener 20 is inserted into the mounting hole 12a, and the curved surface 44 of the engaging portion 30 comes into contact with the hole edge on the front side of the mounting hole 12a as shown in FIG. However, the tip of the engaging portion 30 comes into contact with the protrusion 64 of the wall portion 62 of the second mounting portion 60 to limit the approach, and the intersection of the tips is limited.

As shown in FIG. 10C, when further pushed, the tip of the engaging portion 30 moves toward the tip of the second mounting portion 60 so that the engaging portion 30 extends in the insertion direction, and the curved surface 44 is inserted. The engaging portion 30 is deformed along the direction. When the upper end of the curved surface 44 exceeds the mounting hole 12a, the pair of engaging portions 30 expands due to the restoring force, and the engaging surface 42 engages with the back edge of the mounting hole 12a as shown in FIG. 10(d). To meet.

Here, the engaging portion 30 shown in FIG. 9C is compared with the engaging portion 30 shown in FIG. 10C. The inclination angle of the curved surface 44 with respect to the insertion direction into the mounting hole 12a is attached to the first mounting portion 49 shown in FIG. 9C when mounted on the second mounting portion 60 shown in FIG. 10C. Smaller than if The smaller the inclination angle of the curved surface 44 with respect to the insertion direction into the mounting hole 12a, the easier the insertion. That is, considering only the angle of inclination of the curved surface 44 with respect to the insertion direction into the mounting hole 12a, the insertion force when mounted on the second mounting portion 60 can be made relatively small.

On the other hand, the pair of engaging portions 30 shown in FIG. 9C approach until the tips intersect, and the pair of engaging portions 30 shown in FIG. 10C do not bend so that the tips approach. The pair of engaging portions 30 shown in FIG. 9C can be brought closer to each other in the facing direction, and considering only the expansion amount in the facing direction, the case where the pair of engaging portions 30 is mounted to the first mounting portion 49 is larger. The insertion force can be made relatively small. In this way, the fastener 20 of the first mounting portion 49 causes the tips of the engaging portions 30 to intersect with each other and the fastener 20 of the second mounting portion 60 causes the fastener 20 of the engaging portion 30 to be inserted at the time of insertion into the mounting hole 12 a. The insertion force can be made almost the same by being configured so as to be deformed so as to be stretched. For example, if the first attachment portion 49 and the second attachment portion 60 have different insertion forces, the operator has different feelings indicating completion of insertion, and thus it is difficult to intuitively grasp whether the insertion has been completed. By making the insertion forces of the first attachment portion 49 and the second attachment portion 60 approximately the same, it is possible for the operator to suppress the discomfort caused by the difference in the insertion force when inserting the attachment hole 12a.

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

In the embodiment, the cutout portion 58 is formed so as to cut out the front end of the wall portion 50, but the cutout portion 58 is not limited to this. For example, the notch may be formed in a hole shape on the tip side of the wall 50. That is, a bridge is formed on the tip end side of the cutout portion of the wall portion 50.

10 parts mounting structure, 12 members to be mounted, 12a mounting holes, 20 fasteners, 22 parts, 24 legs, 26 connecting parts, 28 flange parts, 30 engaging parts, 30a base end parts, 32 supporting parts, 34 insertion holes , 40 locking part, 42 engaging surface, 44 curved surface, 46 segment, 48 recessed part, 49 first mounting part, 50 wall part, 50a tip part, 52 side wall part, 54 locking hole, 56 main body part, 58 notch Part, 60 2nd attachment part, 62 wall part, 64 protrusion part.

Claims (6)

A fastener for attaching a component to an attached member,
A pair of opposing legs,
A connecting portion that connects the tip ends of the pair of legs,
The pair of leg portions extend from the base end side toward the tip end side of the leg portion, and engage with the edge of the attachment hole of the attached member while sandwiching the first attachment portion of the component. Have a section,
The fastener is characterized in that the tips of the pair of the engaging portions can intersect with each other while sandwiching the first attachment portion, and the tips do not intersect with each other before being attached to a component. A fastener for attaching a component to an attached member,
A pair of opposing legs,
A connecting portion that connects the tip ends of the pair of legs,
The pair of leg portions has a pair of engaging portions that extend from the base end side toward the distal end side and engage with the edge of the attachment hole of the attached member while sandwiching the first attachment portion of the component. ,
The pair of the engaging portions are characterized in that the tips of the pair of engaging portions can enter and intersect with each other in a notch formed on the tip side of the first attaching portion while sandwiching the first attaching portion. A fastener for attaching a component to an attached member,
A pair of opposing legs,
A connecting portion that connects the tip ends of the pair of legs,
The pair of leg portions has a pair of engaging portions that extend from the base end side toward the distal end side and engage with the edge of the attachment hole of the attached member while sandwiching the first attachment portion of the component. ,
The pair of the engaging portions are capable of intersecting at their tips with the first mounting portion sandwiched therebetween,
The engaging portion is
A recess formed by denting the tip,
And a section formed by the recess at the tip,
The pair of engaging portions approach each other while sandwiching the first mounting portion, and the pair of the segments intersect, and the concave portion of the one engaging portion abuts on the other engaging portion, thereby A fastener for restricting the approach of the engaging portion. In a state where the pair of engagement portions approach each other with the first mounting portion sandwiched therebetween and the pair of sections intersect with each other, and the concave portion of the one engagement portion abuts the other engagement portion, The fastener according to claim 3, wherein the engaging portion is configured not to contact the first attaching portion. A fastener for attaching a component to an attached member,
A pair of opposing legs,
A connecting portion that connects the tip ends of the pair of legs,
The pair of leg portions has a pair of engaging portions that extend from the base end side toward the distal end side and engage with the edge of the attachment hole of the attached member when the first attachment portion of the component is sandwiched. ,
The pair of the engaging portions are capable of intersecting their tips when the first mounting portion is sandwiched, and when the second mounting portion different from the first mounting portion is sandwiched, the tips of the pair of engaging portions are joined by the second mounting portion. Fasteners characterized by limited crossing. Parts and
A fastener for attaching the component to an attached member,
The fastener is
A pair of opposing legs,
A connecting portion that connects the distal ends of the pair of legs,
The parts are
A first mounting portion sandwiched between the pair of leg portions;
A notch formed so as to be cut out on the tip side of the first attachment part,
The pair of leg portions has a pair of engaging portions that extend from the base end side toward the distal end side and engage with the edge of the attachment hole of the attached member while sandwiching the first attachment portion of the component. ,
The component mounting structure, wherein a pair of the engaging portions are capable of intersecting with each other by inserting the first mounting portion so that their tips enter the notch.

Images