JP5762173B2 - Fastener - Google Patents

Description

  The present invention relates to a fastener for fixing a bumper to a vehicle body.

  Bumpers provided at the front and rear of the vehicle are fixed to the vehicle body by fasteners at both ends. Patent Document 1 discloses a bumper fixing clip that fixes a bumper having a flange portion bent at an upper portion to a vehicle body panel side. The bumper fixing clip of Patent Document 1 has an attachment portion for a vehicle body panel and a locking claw that locks into a locking hole formed in the flange portion of the bumper.

JP 2003-191807 A

  In the technique of Patent Document 1, since the locking claw is inserted and locked in the locking hole of the flange portion of the bumper, the mounting operation is not difficult, but the holding force of the bumper with the locking claw is not strong. Absent.

  This invention is made | formed in view of such a subject, The objective is to provide the fastener which raised the retention strength of the bumper.

  In order to solve the above-described problems, an aspect of the present invention is a fastener for fixing a bumper to a vehicle body, the surface of which is provided on the back surface of the main body portion and the main body portion that is covered by the bumper, and is attached to the vehicle body. And a locking mechanism provided on the main body and for locking the flange of the bumper. The locking mechanism includes a base portion that projects in a direction from the front surface to the back surface, a connecting portion that rotatably connects the base portion to the main body portion, and a rotation portion of the base portion that is provided in the base portion in an engagement hole formed in the flange portion. A protrusion that can be inserted and removed by movement; and a stopper that is provided on the base and stops when the base moves in the rotational direction in which the protrusion is inserted into the engagement hole. When a force is applied to the bumper in the direction from the back surface to the front surface in a state where the bumper is locked in this fastener, the protruding portion and the hole edge of the engagement hole come into contact with each other, and the base portion rotates from the hole edge in the rotational direction. Receive torque.

  According to this aspect, since the bumper can be locked by inserting the protruding portion into the engagement hole of the bumper, the mounting operation of the bumper becomes easy. Further, when a force is applied to the bumper in the direction from the back surface to the front surface in a state where the bumper is locked, the base portion rotates in the rotation direction, and the rotation is stopped by the stopper portion. Since these operations work so as not to let the protruding portion come out of the engagement hole, the holding force of the bumper can be improved.

  ADVANTAGE OF THE INVENTION According to this invention, in the fastener which fixes a bumper to a vehicle body, the retention strength of a bumper can be improved.

It is a figure for demonstrating the state by which the fastener which concerns on embodiment was attached to the vehicle. It is a perspective view of the fastener concerning an embodiment. It is the elements on larger scale of the fastener concerning an embodiment. 4A is a top view of the locking mechanism 20, and FIG. 4B is a cross-sectional view taken along line AA in FIG. 4A. It is a figure for demonstrating the effect | action of a locking mechanism. It is a figure for demonstrating the inclination-angle of a protrusion part.

  FIG. 1 is a diagram for explaining a state in which the fastener 10 according to the embodiment is attached to the vehicle 1. FIG. 1 shows a part of the vehicle 1 as viewed from an oblique rear side of the vehicle 1. The bumper 2 at the rear part of the vehicle 1 has a central part 2a attached to the rear end part of the vehicle 1, and a side part 2b extending along the side surface of the vehicle 1 from each end part of the central part 2a. The side part 2 b is positioned in the vicinity of the rear part of the wheel 6 so as to face the wheel 6. The fastener 10 fixes the end of the side part 2 b of the bumper 2, that is, both ends of the bumper 2 to the vehicle body panel 4.

  In terms of design, the fastener 10 is disposed on the back side of the bumper 2 so that it cannot be seen from the outside. The fastener 10 is first fixed to the vehicle body panel 4 and then held so that the side portion 2b of the bumper 2 is not removed. The side part 2b has a flange part (not shown) protruding from the back surface of the side part 2b.

  The central portion 2a of the bumper 2 is firmly fixed to the rear end portion of the vehicle 1. However, the fixing is to prevent the bumper 2 from moving in the front-rear direction of the vehicle 1, and the side portion 2b is not fixed by the fixing alone. There is a possibility of coming off in the vehicle width direction. On the other hand, the bumper 2 is fixed in a place where it cannot be visually seen from the exterior in terms of design, and since it is attached and removed in a narrow space on the back side of the bumper 2, it is very cumbersome to screw, or depending on the vehicle model, In some cases, it cannot be fastened. While the side part 2b of the bumper 2 is firmly fastened to the vehicle body panel 4 using the fastener 10 of the embodiment, the removal work of the bumper 2 is facilitated.

  FIG. 2 is a perspective view of the fastener 10 according to the embodiment. In FIG. 2, it is the figure which looked at the fastener 10 from the back surface side. The front side of the fastener 10 (not shown) is covered with the bumper 2. 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 fastener 10 includes a main body portion 12, a pressing piece 14, a vehicle body attachment portion 16, and a locking mechanism 20. The main body 12 is a substantially rectangular parallelepiped, and the back surface is partially cut out. The pressing piece 14 is provided in a bowl shape on the upper side surface 15 of the main body 12. The tip of the pressing piece 14 faces the front side of the fastener 10. The flange portion of the bumper 2 enters and is held between the pressing piece 14 and the upper side surface 15 of the main body portion 12.

  A plurality of vehicle body attachment portions 16 are provided on the back surface 18 of the main body portion 12 and protrude from the back surface 18. The vehicle body attachment portions 16 are inserted into the fitting holes of the vehicle body panel 4 to fix the fastener 10 to the vehicle body panel 4. The locking mechanism 20 is provided at one end on the upper surface 15 side of the main body 12 and locks the flange portion of the bumper 2.

  FIG. 3 is a partially enlarged view of the fastener 10 according to the embodiment. FIG. 3A is a perspective view of the locking mechanism 20 viewed from the back side of the fastener 10, and FIG. 3B is a perspective view of the locking mechanism 20 viewed from the front side of the fastener 10. 4A is a top view of the locking mechanism 20, and FIG. 4B is a cross-sectional view taken along line AA in FIG. 4A.

  The locking mechanism 20 includes a base portion 22, a connecting portion 24, a protruding portion 26, a stopper portion 28, and an operation portion 30. Below the locking mechanism 20, a concave operation space forming portion 32 provided on the upper side surface 15 of the main body portion 12 is provided. The locking mechanism 20 can operate in the space formed by the operation space forming part 32.

  The base 22 is formed in a plate shape. The base 22 extends so as to project in a direction from the front surface 19 toward the back surface 18 (hereinafter referred to as “first direction”). As shown in FIG. 3B, the base portion 22 is rotatably connected to the main body portion 12 by a connecting portion 24.

  The connecting portion 24 is formed integrally with the base portion 22 and the main body portion 12 and is configured to be twisted when the base portion 22 is rotated. A hole 34 is formed in the surface 19 of the main body 12 below the connecting portion 24. Thereby, the connection part 24 has elasticity, and if the external force is lost even if the base part 22 rotates, the base part 22 can be returned to the original position.

  The protruding portion 26 is provided on the base portion 22, is located on the leading portion side of the base portion 22 with respect to the connecting portion 24, and can be inserted into and removed from the engagement hole formed in the flange portion 2 c by the rotation of the base portion 22. The protrusion 26 protrudes upward from the upper side surface 15. When the protruding portion 26 is inserted into the engagement hole of the flange portion, the bumper 2 is locked.

  The stopper portion 28 is provided on the base portion 22, and comes into contact with the vehicle body and stops its movement when the base portion 22 moves in the rotation direction in which the protruding portion 26 is inserted into the engagement hole of the flange portion. Thereby, when the base 22 rotates and the connection part 24 twists, the load concerning the connection part 24 can be suppressed. The stopper portion 28 is located on the front side of the protruding portion 26 and protrudes in the same direction as the protruding portion 26. By protruding the stopper portion 28, the flange portion 2c of the bumper 2 can be stopped so as not to excessively enter the first direction.

  The operation unit 30 is provided at the top of the base 22. The operation unit 30 is formed wider than the base unit 22 so that the operator can easily work. When the operator pushes the operating portion 30 downward with a finger, the base portion 22 rotates and the protruding portion 26 can be easily removed from the locking hole portion of the flange portion. The operator needs to work by putting a hand in the narrow space on the back side of the side portion 2b of the bumper 2, but the operation portion 30 protrudes from the back surface 18 in the first direction, so that the operation is easy.

  FIG. 5 is a diagram for explaining the operation of the locking mechanism 20. FIG. 5A shows an operation when the bumper 2 is attached. FIG.5 (b) shows the case where the force of the direction which the bumper 2 remove | deviates is added in the latching state. FIG. 5C shows an operation for releasing the locked state.

  A flange portion 2c protruding from the back surface is provided at the end of the side portion 2b of the bumper 2. The flange portion 2c has an engagement hole 2d into which the protruding portion 26 can be inserted and removed. The vehicle body panel 4 has a bent portion 4 a whose edge is bent toward the inside of the vehicle, and the bent portion 4 a is disposed to face the flange portion 2 c when the bumper 2 is locked. As shown in FIGS. 5B and 5C, the tip 4b of the bent portion 4a projects toward the vehicle inner side from the tip 2f of the flange portion 2c when the bumper 2 is locked.

  In FIG. 5A, the bumper 2 is moved in the first direction and attached to the fastener 10 attached to the vehicle body. When the bumper 2 moves in the first direction, the tip of the flange portion 2c comes into contact with the protruding portion 26, and the base portion 22 is rotated in the counterclockwise direction in the drawing (hereinafter referred to as “first rotation direction”). When the base portion 22 rotates in the first rotation direction, the protruding portion 26 is lowered and the flange portion 2c is pushed.

  When the bumper 2 is pushed to a predetermined position and the engaging hole 2d moves to a position where it overlaps the protruding portion 26, the base 22 rotates in the second rotation direction by the elastic force of the connecting portion 24, and the protruding portion 26 enters the engaging hole 2d. Is inserted into the locked state. The second rotation direction is opposite to the first rotation direction and is a direction in which the protruding portion 26 is inserted into the engagement hole 2d.

  The locked state of the bumper 2 after attaching with the dashed-two dotted line of Fig.5 (a) is shown. In the locked state, the protrusion 26 is inserted into the engagement hole 2d of the flange 2c. Thereby, it can attach to the fastener 10 by simple operation of pushing in the bumper 2.

  In FIG. 5B, when a force in a direction in which the bumper 2 is released in the locked state is applied to the bumper 2, the bumper 2 tends to move from the back surface 18 toward the front surface 19 (hereinafter referred to as “second direction”). Since the protruding portion 26 is inserted into the engaging hole 2d, the hole edge 2e of the engaging hole 2d is caught by the protruding portion 26. The second direction is a direction opposite to the first direction and is a direction in which the bumper 2 is removed.

  At this time, the protrusion 26 and the hole edge 2e of the engagement hole 2d come into contact with each other, and the base 22 receives torque in the second rotational direction. When the base portion 22 rotates in the second rotation direction, the stopper portion 28 comes into contact with the bent portion 4a of the vehicle body panel 4 and stops its rotation. Therefore, the hole edge 2e is maintained in a state of being caught by the protruding portion 26, and the bumper 2 can be firmly held and the bumper 2 can be prevented from coming off. Thus, since the base 22 receives the torque in the second rotation direction due to the contact between the protrusion 26 and the hole edge 2e, the inclination angle of the contact surface of the protrusion 26 that contacts the hole edge 2e is larger than a predetermined angle. Set as follows. Here, the inclination angle of the contact surface of the protrusion 26 will be specifically described with reference to FIG.

  FIG. 6 is a diagram for explaining the inclination angle of the protrusion 26. 6A is a cross-sectional view taken along line AA in FIG. 4A. In the locked state, the bumper 2 tries to move in the second direction, and the edge 2e of the engagement hole 2d contacts the protrusion 26. FIG. Shows the state. FIG. 6B shows the relationship between the contact surface 26 a of the protrusion 26, the rotation fulcrum 24 a, and the contact point 42.

  The contact surface 26a is a surface of the protruding portion 26 that comes into contact with the hole edge 2e of the engagement hole 2d when a force F in the second direction is applied to the bumper 2. The contact point 42 is a point on the contact surface 26a, and is a center point of a portion where the hole edge 2e and the protruding portion 26 are in contact with each other. The rotation fulcrum 24 a is a center point on the rotation axis of the base 22. A straight line 40 connects the contact point 42 and the rotation fulcrum 24a.

  6B, the external force F received by the base 22 from the hole edge 2e of the engagement hole 2d, the orthogonal surface 46 orthogonal to the straight line 40, and the parallel surface 44 parallel to the second direction are simply shown. . The external force F can be decomposed into a parallel component F2 of the contact surface 26a and a vertical component F1 of the contact surface 26a, and the vertical component F1 is a force F1 applied to the contact surface 26a. The parallel component F2 of the contact surface 26a balances with the frictional force of the contact surface 26a unless the base 22 is rotating. The component excluding the component parallel to the straight line 40 of the force F1 acts to rotate the base portion 22.

  When the inclination angle θ1 of the contact surface 26a with respect to the second direction is compared with the inclination angle θ2 of the orthogonal surface 46 with respect to the second direction, the inclination angle θ1 of the contact surface 26a is larger. Then, a force F1 acts on the contact surface 26a from the hole edge 2e of the engagement hole 2d in a direction perpendicular to the surface, and this force F1 generates a torque in the second rotation direction around the rotation fulcrum 24a. Thereby, even if the force F of the direction which remove | deviates to the bumper 2 is added, it can prevent that the base 22 rotates to the 2nd rotation direction 38, and the bumper 2 remove | deviates.

  Even if the position of the contact point 42 with respect to the rotation fulcrum 24a changes due to the rotation of the base portion 22, the inclination angle of the contact surface 26a of the protruding portion 26 is configured to satisfy θ1> θ2. In addition, the contact line on the contact surface 26a where the hole edge 2e and the projecting portion 26 contact each other, the inclination angle of the orthogonal surface perpendicular to the surface passing through the rotation axis of the base portion 22, and the contact surface 26a Similarly, the relationship of the inclination angle with respect to the second direction is configured such that the inclination angle of the contact surface 26a is larger.

  In FIG.5 (c), an operator pushes the operation part 30 below, and rotates the base 22 in a 1st rotation direction. When it is rotated in the first rotation direction, the projecting portion 26 is lowered and comes out of the engagement hole 2d, and the locked state is released. At this time, the bumper 2 can be removed from the fastener 10 by moving the bumper 2 in the second direction. When the operation unit 30 is operated in the first rotation direction, after the protruding portion 26 comes out of the engagement hole 2d, the base 22 is brought into contact with the operation space forming unit 32 so as not to rotate too much. It is comprised so that rotation of a rotation direction may be stopped.

  When operating the operating unit 30 to release the locked state, if the inclination angle θ1 of the contact surface 26a of the protruding portion 26 is too large, the contact surface 26a may be caught by the hole edge 2e, and may not come off. The inclination angle θ1 is set to 90 degrees or less, for example, so that the contact surface 26a is not caught by the engagement hole 2d.

  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. Embodiments described may also be included within the scope of the present invention.

  DESCRIPTION OF SYMBOLS 1 Vehicle, 2 Bumper, 2b Side part, 2c Flange part, 2d Engagement hole, 2e Hole edge, 4 Car body panel, 10 Fastener, 12 Main body part, 14 Pressing piece, 15 Upper side, 16 Car body attaching part, 18 Back surface , 19 surface, 20 locking mechanism, 22 base part, 24 connecting part, 24a rotating fulcrum, 26 projecting part, 26a contact surface, 28 stopper part, 30 operation part, 32 operation space forming part, 34 hole part, 42 contact point .

Claims (5)

A fastener for fixing the bumper to the vehicle body,
A body part whose surface is covered by a bumper;
An attachment portion provided on the back surface of the main body portion and attached to the vehicle body;
A locking mechanism for locking the flange of the bumper provided on the main body,
The locking mechanism is
A base projecting in a direction from the front surface toward the back surface;
A connecting portion that rotatably connects the base portion to the main body portion;
A protrusion that is provided on the base and is detachable from an engagement hole formed in the flange by turning the base;
A stopper provided on the base, and stops when the base moves in the rotational direction for inserting the protrusion into the engagement hole and stops moving.
When a force is applied to the bumper in a direction from the back surface to the front surface in a state where the bumper is locked, the protrusion and the hole edge of the engagement hole come into contact with each other, and the base portion is separated from the hole edge. The fastener receiving the torque in the rotational direction.   The contact surface of the projecting portion that contacts the hole edge is from the front surface to the back surface from an orthogonal surface orthogonal to a straight line connecting the projecting portion and the contact point of the hole edge and the rotation fulcrum of the base portion. The fastener according to claim 1, wherein an inclination angle with respect to a direction toward the head is large.   The fastener according to claim 1 or 2, wherein the locking mechanism further includes an operation portion provided at a top portion of the base portion.   The said stopper part is located in the head part side of the said base part from the said protrusion part, and protrudes in the same direction as the said protrusion part, The fastener of Claim 3 characterized by the above-mentioned.   The fastener according to any one of claims 1 to 4, wherein the connecting portion is twisted when the base portion is rotated.

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