JP5852860B2 - Parts fixing device - Google Patents

Description

  The present invention relates to a component fixing device for fixing another component such as a floor mat to one component such as a floor carpet provided in a vehicle, for example.

  A floor carpet is laid on the floor of the vehicle, and a floor mat is further attached to a portion where a driver or a passenger rides. The floor mat is fixed so as not to move inadvertently with respect to the floor carpet. For example, when mud or sand adheres, the floor mat can be removed from the floor carpet and cleaned.

  Conventionally, as a component fixing device as described above, the following Patent Document 1 includes a main body portion installed on a floor carpet, and a cap that can be pushed into the front end of the main body portion. Describes a component fixing device in which a flexible elastic engagement piece that engages with a mounting hole formed in a floor mat is projected. And a floor mat is attached to a floor carpet by inserting a main-body part into an attachment hole and engaging an elastic engagement piece with the attachment hole of a floor mat.

  On the other hand, when removing the floor mat from the floor carpet, first, the cap is pushed into the main body, the elastic engagement piece is bent inward, and the elastic engagement piece is removed from the mounting hole. Then, the floor mat can be removed from the floor carpet by lifting the floor mat with respect to the floor carpet while removing the elastic engagement piece from the mounting hole while holding the cap pushed in.

JP 2008-163961 A

  However, in the fixing device described in Patent Document 1, when removing the floor mat from the floor carpet, the cap is pushed into the main body with one hand, the elastic engagement piece is bent inward, and the mounting hole Since it is necessary to lift the floor mat from the floor carpet with the other hand while keeping it in a state of being detached from the floor, there is a problem in its workability.

  Accordingly, an object of the present invention is to provide a component fixing device that can securely fix the other component to one component and can easily remove the other component from the one component. It is in.

In order to achieve the above object, a component fixing device according to the present invention includes a main body portion attached to one component and an attachment hole provided in the other component, and the main body portion and the attachment hole are engaged with each other. By fixing, the other part is fixed to the one part, and the main body part is formed so as to be able to protrude from the outer periphery of the columnar part inserted into the mounting hole and the columnar part, An elastic engagement piece that engages with the mounting hole when the columnar part is inserted into the mounting hole, and is rotatably and rotatably covered on the columnar part, and is pushed into the columnar part to thereby provide the elasticity. A cap that retracts the engagement piece into the columnar portion to release the engagement with the mounting hole, and the cap is rotated by a predetermined angle while the cap is pushed in and the engagement of the elastic engagement piece is released. By letting the cap Has a disengagement maintaining means for maintaining a depressed state, the engagement releasing maintaining means, first and protrusions formed on one of the columnar portion and the cap, the columnar portion and the cap Any one of the axial grooves and the circumferential grooves into which the first protrusions enter, and when the cap is pushed into the columnar part, the first protrusions are the axial grooves. When the cap is rotated by a predetermined angle in a state where the engagement of the elastic engagement piece is released by pushing the cap and pushing the cap, the first protrusion enters the circumferential groove, An axial movement relative to the columnar part is restricted .

  In the component fixing device of the present invention, between the inner periphery of the mounting hole provided in the other component and the outer periphery of the cap, a second protrusion provided on one side thereof, and a slope provided on the other side When the first protrusion moves in the axial groove, the second protrusion and the inclined surface are not in contact with each other, and the first protrusion enters the circumferential groove. In the state, when the columnar portion is extracted from the mounting hole, the second protrusion comes into contact with the inclined surface, the cap rotates, and the elastic engagement piece comes to a position where it does not engage with the mounting hole. It is preferable that the first protrusion is configured to return to the axial groove.

  In the component fixing device of the present invention, a length L1 along the circumferential direction of the slope is formed equal to or longer than a length L2 of the circumferential groove, and the second protrusion is formed on the slope. It is preferable that the first protrusion is configured to enter the axial groove when the columnar part is disengaged from the end part located on the base side.

  In the component fixing device of the present invention, the main body portion is provided with cap urging means for urging the cap in a direction opposite to a direction in which the cap is pushed into the main body portion. It is preferable that the urging means is formed of a spring plate that is formed so as to be able to bend at the tip of the columnar part and elastically contacts the back side of the cap.

  In the component fixing device of the present invention, the one component is a floor carpet for a vehicle, the main body is fixed to the floor carpet via a clip, and the other component is the floor carpet. It is preferable that a grommet is mounted on the floor mat and the mounting hole is formed on the inner periphery thereof.

  According to the present invention, when the columnar part of the main body part is aligned with the mounting hole of the other part and the columnar part is inserted into the mounting hole, the elastic engagement piece on the outer periphery of the columnar part is engaged with the mounting hole, The other part can be fixed to the other part.

  When the cap is pushed toward the main body in this state, the elastic engagement piece is pressed and retracted into the columnar portion, the engagement between the elastic engagement piece and the mounting hole is released, and the cap is rotated in this state. By doing so, the pressed state of the cap is maintained by the disengagement maintaining means, so that the other part can be detached from the columnar part and the other part can be separated from the one part.

1 is an exploded perspective view showing an embodiment of a component fixing device according to the present invention. It is a disassembled perspective view of the main-body part which comprises the fixing device. It is a perspective view of the main-body part which comprises the fixing device. The grommet which comprises the fixing device is shown, (a) is a perspective view of the base | substrate which comprises the grommet, (b) is a perspective view of a cover body. It is a perspective view of the grommet which comprises the fixing device. It is the usage method at the time of fixing components using the fixing device, The 1st process is shown, (a) is a top view, (b) is in the AA arrow line of (a). It is sectional drawing. (A) is sectional drawing in the BB arrow line of Fig.6 (a), (b) is a side view in Fig.6 (a). The 2nd process of the usage method by the fixing device is shown, (a) is a top view and (b) is a sectional view in the CC arrow line of (a). 8A is a cross-sectional view taken along the line D-D in FIG. 8A, FIG. 8B is a side view in FIG. 8A, and FIG. 8C is taken along the line E-E in FIG. It is sectional drawing. The 3rd process of the usage method by the fixing device is shown, (a) is a top view and (b) is a sectional view in the FF arrow line of (a). (A) is sectional drawing in the GG arrow line of Fig.10 (a), (b) is a side view in Fig.10 (a), (c) is in the HH arrowline of Fig.10 (a). It is sectional drawing. The 4th process of the usage method by the fixing device is shown, (a) is a top view and (b) is a sectional view in an II arrow line of (a). (A) is sectional drawing in the JJ arrow line of Fig.12 (a), (b) is a side view in Fig.12 (a), (c) is in the KK arrowline of Fig.12 (a). It is sectional drawing. The 5th process of the usage method by the fixing device is shown, (a) is a top view and (b) is a sectional view in the LL arrow line of (a). (A) is sectional drawing in the MM arrow line of Fig.14 (a), (b) is a side view in Fig.14 (a), (c) is in the NN arrow line of Fig.14 (a). It is sectional drawing.

  Hereinafter, an embodiment of a component fixing device according to the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the component fixing device in this embodiment includes a main body 10 attached to a floor carpet 3 (hereinafter referred to as “carpet 3”) and a floor mat 7 (hereinafter referred to as “mat 7”). A mounting hole 15 (see FIGS. 5 and 9A, 9B) provided on the inner periphery of the attached grommet 50, and the main body 10 is engaged with the mounting hole 15 or By releasing the engagement, the carpet 3 and the mat 7 can be attached and detached.

  In this embodiment, the carpet 3 constitutes “one part” in the present invention, and the mat 7 constitutes “the other part” in the present invention. One part may be a vehicle body panel or the like, and the other part may be a garnish, trim board, cover member, or the like, and the one part and the other part are not particularly limited.

  As shown in FIG. 1, a circular insertion hole 4 is formed in the carpet 3, and rectangular long holes 5 are formed at predetermined intervals with respect to the insertion hole 4. On the other hand, a circular grommet mounting hole 8 is formed in the mat 7, and a grommet 50 is mounted on the mat 7, and the mounting hole 15 is provided on the inner periphery of the grommet 50 (see FIG. 5). ).

  The main body 10 in this embodiment is mainly composed of a cylindrical columnar portion 20 that is inserted into the mounting hole 15 and a cap 40 that is rotatably and rotatably mounted on the distal end portion of the columnar portion 20. ing.

  As shown in FIG. 2 and FIG. 7A, elastic engagement pieces 23 and 23 that can be bent are provided on the opposing outer peripheral surfaces of the cylindrical columnar portion 20 via a U-shaped slit 21. 20 is provided so that it can appear and disappear. The outer surface on the distal end side of each elastic engagement piece 23 forms a pressing surface 23 a that gradually protrudes higher from the distal end of the columnar portion toward the proximal end, and is pressed when the cap 40 is pushed into the columnar portion 20. Each elastic engagement piece 23 is drawn inwardly of the columnar part (see FIG. 11A). Further, the outer surface on the base end side of each elastic engagement piece 23 forms an engagement surface 23b that gradually becomes lower from the top protruding most outward, and this engagement surface 23b is engaged with the mounting hole 15 (see FIG. 5). It is a part to match.

  Further, first protrusions 25, 25 project from the opposing outer peripheral surfaces of the columnar part 20 at positions orthogonal to the pair of elastic engagement pieces 23, 23. The engagement surface 25a on the base end side of each first protrusion 25 is disposed so as to be closer to the tip of the columnar portion 20 than the engagement surface 23b of the elastic engagement piece 23 (FIG. 2). And FIG. 7 (b)).

  Also, as shown in FIGS. 6B and 7A, tongue-shaped spring plates 27 and 27 extend from the inner peripheral edge of the tip of the columnar portion 20 toward the center of the columnar portion so as to bend. Yes. Each spring plate 27 elastically contacts the back side of the cap 40 to urge the cap 40 in a direction opposite to the pushing direction thereof, and the “cap urging means” in the present invention. There is no. A coil spring or the like may be employed as the cap urging means.

  As shown in FIGS. 2 and 3, at the base end portion of the columnar portion 20 and a position spaced a predetermined distance from the base end portion to the front end portion side, a long plate shape that abuts on the back surface and the front surface of the carpet 3, respectively. Holding plates 31 and 33 are provided. The front end portion 34 of the sandwiching plate 33 can be bent, and a locking piece 34a is extended from the inner surface of the front end. On the other hand, a locking piece 31a for locking to the locking piece 34a protrudes from the inner surface of the front end of the holding plate 31, and when the locking pieces 31a, 34a are locked, the locking piece 34a. A holding piece 31b is provided so as to protrude from the rear surface side and hold the locked state (see FIGS. 2 and 6B). The sandwiching plates 31 and 33 and the locking pieces 31 a and 34 a form a “clip” in the present invention for fixing the main body 10 to the carpet 3.

  As shown in FIG. 2, the cap 40 attached to the distal end portion of the main body portion 10 is provided with a substantially disc-shaped lid portion 41 and a predetermined length extending from the periphery of the back surface of the lid portion 41. 20 and a cylindrical peripheral wall 43 surrounding the outer periphery of the tip. The front surface side of the lid portion 41 is recessed, and a rib-shaped knob portion 41a for cap operation is provided in the recessed portion. 6B and 7A, a hemispherical bulging portion 41b that presses the spring plates 27 is formed on the back surface side of the lid portion 41. As shown in FIG.

  Further, notches 45 and 45 are formed at a predetermined depth from the axial base end surface at positions facing the circumferential direction of the peripheral wall 43. The notches 45 and 45 are disposed at positions aligned with both longitudinal ends of the knob portion 41 a of the lid portion 41. When the cap 40 is pushed into the columnar portion 20, the bottom surface 45 a of the notch 45 presses the pressing surface 23 a to bend the elastic engagement piece 23 inward and pull it into the columnar portion. (See FIG. 11A).

  As shown in FIG. 2 and FIG. 7B, the circumferential wall 43 extends in the axial direction of the circumferential wall 43 at a position facing the circumferential direction and perpendicular to the notches 45, 45. Axial grooves 47 and 47 are formed, respectively. The first protrusions 25 and 25 of the columnar portion 20 enter the respective axial grooves 47 so as to be movable in the axial direction, and the cap 40 can be pushed into the columnar portion 20 (FIG. 3, FIG. 3). 9 (b) and FIG. 11 (b)).

  Further, as shown in FIG. 7B, the base end portion 47a of each axial groove 47 is provided closer to the base end portion of the peripheral wall 43 than the bottom surface 45a of the notch 45, and is coaxial. The front end 47 b of the directional groove 47 is provided at a position substantially aligned with the bottom surface 45 a of the notch 45.

  In a state where the cap 40 is not pushed in, the bulging portion 41 b of the cap 40 is supported by the spring plates 27, 27 of the columnar portion 20, and the first protrusion 25 is formed on the proximal end portion 47 a of the axial groove 47. The cap 40 is retained by the columnar portion 20 so as to prevent the elastic engagement pieces 23 and 23 from protruding outward from the columnar portion (FIG. 8B and FIG. 8). 9 (a) and (b)).

  On the other hand, when the cap 40 is pushed in, the spring plates 27 and 27 are pressed against the bulging portion 41b to bend and deform, and the cap 40 is urged to the opposite side to the pushing direction. Therefore, when the cap 40 is pushed against the urging force of the spring plate 27 and the first protrusion 25 moves to the distal end portion 47b of the axial groove 47, the elastic engagement piece 23 is pressed by the cap 40 to form a columnar shape. It is held in a state of being pulled into the inner periphery (see FIGS. 10B, 11A, and 11B).

  Furthermore, circumferential grooves 48, 48 extending along the circumferential direction of the peripheral wall 43 from both sides of the distal end portion 47 b of the axial groove 47 are formed in the peripheral wall 43 so as to communicate with the axial groove 47, respectively. The first protrusion 25 of the columnar part 20 enters the circumferential direction so that the cap 40 can rotate with respect to the columnar part 20.

  Accordingly, the cap 40 is pushed, the first protrusion 25 moves to the tip 47b of the axial groove 47, the elastic engagement piece 23 is drawn into the inner periphery of the columnar portion, and the engagement with the mounting hole 15 is released. When the cap 40 is rotated with respect to the columnar part 20 in the state (see FIGS. 11A and 11B), the first protrusion 25 enters the circumferential groove 48, and the The movement in the axial direction is restricted, and the elastic engagement piece 23 is held in a state of being pulled into the inner periphery of the columnar portion, so that the disengaged state from the mounting hole 15 is maintained (FIG. 13 ( a), see (b)).

  As described above, in the present embodiment, the axial groove 47 and the circumferential groove 48 provided in the columnar portion 20 and the first protrusion 25 moving in each groove form the pushing state of the cap 40 in the present invention. "Disengagement maintaining means" for maintaining is configured. In addition, an axial groove and a circumferential groove may be provided on the columnar portion 20 side, and a first protrusion may be provided on the cap 40 side. In this embodiment, the circumferential grooves 48 are formed on both sides of the axial groove 47, but the circumferential groove 48 may be formed only on one side of the axial groove 47.

  Further, second protrusions 49, 49 project from the circumferential wall 43 at a position aligned with the axial direction of the axial groove 47 and adjacent to the tip 47 b. Therefore, when the first protrusion 25 is located in the axial groove 47, the second protrusion 49 is aligned with the first protrusion 25 (see FIGS. 9B and 11B). On the other hand, in a state where the cap 40 rotates and the first protrusion 25 enters the circumferential groove 48 and the elastic engagement piece 23 is pulled into the inner periphery of the columnar portion, the second protrusion 49 is predetermined with respect to the first protrusion 25. It is arranged at a position shifted by an angle (see FIG. 13B).

  As shown in FIG. 1, the grommet 50 mounted in the grommet mounting hole 8 of the mat 7 is disposed on the base 60 disposed on the front surface side of the mat 7 and on the back surface side of the mat 7. The lid 70 is attached and sandwiches the mat 7.

  As shown in FIG. 4, the base body 60 has a cylindrical tube portion 61 inserted into the grommet mounting hole 8 of the mat 7 and an umbrella shape extending from the outer periphery of the tip of the tube portion 61. And a flange portion 62 that engages with the front peripheral edge. In addition, a plurality of engaging portions 63 including a plurality of convex portions projecting stepwise along the axial direction are provided on the outer periphery of the cylindrical portion 61 with a uniform spacing in the circumferential direction.

  As shown in FIGS. 5 and 9, a substantially annular engagement rib 64 that engages with the engagement surface 23 b of the elastic engagement piece 23 of the columnar portion 20 protrudes from the inner periphery of the base end of the cylindrical portion 61. It is installed. The inside of the engagement rib 64 forms the “mounting hole 15” in the present invention for mounting the main body 10 to the mat 7. The engagement rib 64 is separated at two locations facing each other in the circumferential direction, and guide ribs 65, 65 are extended along the axial direction of the cylindrical portion 61 from both sides of each contacting / separating portion. A protrusion passage groove 66 through which the second protrusion 49 of the cap 40 passes is inserted between the guide ribs 65 when the columnar section 20 is inserted into the mounting hole 15 or when the columnar section 20 is pulled out of the mounting hole 15. Is formed.

  Further, as shown in FIG. 9C, guide surfaces 67 are formed on the base end surfaces of the guide ribs 65, 65 so as to incline from the base end of the tube portion toward the front end side and communicate with the projection passage groove 66. Thus, when the columnar portion 20 is inserted into the mounting hole 15, the second protrusion 49 of the cap 40 is in sliding contact with the protrusion passing groove 66.

  A slope 68 is formed on the distal end surface of the guide rib 65 so that the second protrusion 49 of the cap 40 is in sliding contact therewith. The slope 68 is inclined such that one end portion thereof communicates with the projection passage groove 66 and gradually protrudes higher toward the tip end side of the tube portion, and the other end portion is formed highest.

  Further, as shown in FIGS. 15B and 15C, the length L1 along the circumferential direction of the slope 68 is formed to be equal to or longer than the length L2 along the circumferential direction of the circumferential groove 48. When the second protrusion 49 of the cap 40 moves away from the one end portion of the slope 68 on the columnar portion proximal end side and moves to the protrusion passage groove 66, the first protrusion 25 of the columnar portion 20 moves to the axial groove 47. It is configured to enter.

  When the cap 40 is pushed in the state where the main body portion 10 is attached to the attachment hole 15, the inclined surface 68 abuts on the second protrusion 49 when the first protrusion 25 moves in the axial groove 47. (Refer to FIGS. 9C and 11C), when the cap 40 rotates and the first protrusion 25 enters the circumferential groove 48, and the elastic engagement piece 23 is drawn into the inner periphery of the columnar portion. In addition, an inclined surface 68 is arranged below the second protrusion 25 (see FIG. 13C).

  In addition, when the mat 7 is pulled away from the carpet 3 with the elastic engagement piece 23 being pulled into the inner periphery of the columnar portion, the second protrusion 49 abuts against the slope 68 and slides, and the cap 40 rotates in the opposite direction. After moving and reaching a position where the elastic engagement piece 23 does not engage with the mounting hole 15, the second protrusion 49 is detached from the inclined surface 68 and enters the protrusion passage groove 66, and the first protrusion 25 becomes the axial groove. 47 (see FIGS. 15B and 15C).

  Thus, in the present embodiment, the second protrusion 49 provided on the cap 40 and the inclined surface 68 provided on the inner periphery of the mounting hole 15 formed on the grommet 50 constitute the “cam mechanism” in the present invention. doing. Alternatively, the second protrusion may be provided on the inner periphery of the mounting hole 15, a concave groove may be formed on the outer periphery of the cap 40, and the inclined surface may be provided on the inner periphery thereof.

  Further, as shown in FIGS. 5 and 8A, the outer periphery of the columnar portion 20 is located at a position opposed to the inner periphery of the cylindrical portion 61 of the base body 60 and perpendicular to the pair of guide ribs 65, 65. Positioning ribs 69, 69 are provided on both sides of the elastic engagement piece 23.

  As shown in FIG. 4 (b), the lid 70 attached to the base body 60 is externally mounted on the cylindrical portion 61 of the base body 60 and is a cylindrical cylindrical portion 71 inserted into the grommet mounting hole 8 of the mat 7. And a flange portion 72 that spreads out in an umbrella shape from the outer periphery of the base end of the cylindrical portion 71 and engages with the rear peripheral edge of the grommet mounting hole 8.

  In addition, a plurality of engaging claws 73 that are engaged stepwise with a stepped engaging portion 63 on the outer periphery of the base body are provided on the inner periphery of the cylindrical portion 71 with a uniform spacing in the circumferential direction. .

  In the embodiment described above, the grommet 50 is mounted on the mat 7 constituting the other part and the mounting hole 15 is provided on the inner periphery thereof. However, when the other part is made of a hard material, the other part is provided. A mounting hole may be formed directly on the main body 10 so that the main body 10 can be detachably engaged therewith. In that case, you may provide the slope which the 2nd protrusion 49 of the cap 40 slidably contacts in the inner periphery of the attachment hole of the other component.

  Next, the usage method and the effect of the component fixing device according to the present invention having the above-described structure will be described.

  First, the cap 40 is attached to the tip of the columnar part 20. That is, the cap 40 is pushed into the columnar portion 20 in a state where the notches 45 and 45 of the cap 40 are aligned with the elastic engagement pieces 23 and 23 of the columnar portion 20, and the first protrusion 25 of the columnar portion 20. Is inserted into the axial groove 47 of the cap 40 (see FIG. 2).

  As a result, the spring plates 27, 27 come into contact with the bulging portion 41 b on the back side of the cap, the first protrusion 25 enters the proximal end portion 47 a of the axial groove 47, and the cap 40 is prevented from coming off from the columnar portion 20. It is mounted (see FIG. 3). In this state, since the elastic engagement piece 23 is not pressed by the cap 40, the pair of elastic engagement pieces 23 and 23 protrudes outward from the columnar portion 20 through the notch 45 of the cap 40. Yes.

  Next, the main body portion 10 in which the cap 40 is assembled to the columnar portion 20 is attached to the carpet 3. That is, the distal end portion of the clamping plate 31 of the columnar portion 20 is inserted into the insertion hole 4 of the carpet 3, the proximal end portion of the columnar portion 20 is inserted into the insertion hole 4, and the clamping plate 31 is inserted from the long hole 5 of the carpet 3. The front and back sides of the carpet 3 are inserted by inserting the engaging piece 31a and the holding piece 31b at the distal end, bending the distal end portion 34 of the holding plate 33 in this state, and engaging the engaging piece 34a with the engaging piece 31a. Both surfaces are clamped by the clamping plates 31 and 33, and the main body 10 can be attached to the carpet 3 (see FIGS. 6 and 7).

  Further, the grommet 50 is positioned and attached to the mat 7. That is, the base body 60 is positioned so that each elastic engagement piece 23 of the main body 10 attached to the carpet 3 is disposed between the positioning ribs 69 and 69 of the grommet 50 (see FIG. 8A). In this state, the cylindrical portion 61 of the base body 60 is inserted from the front side, and the flange portion 62 is engaged with the front side peripheral edge of the grommet mounting hole 8.

  At the same time, the engaging claw 73 of the lid body 70 is aligned with the engaging portion 63 of the base body 60, the cylindrical portion 71 of the lid body 70 is inserted from the back side of the grommet mounting hole 8, and is externally attached to the cylindrical portion 61. By engaging the engaging claw 73 with the portion 63, the front and back surfaces of the grommet mounting hole 8 are sandwiched by the flange portions 62 and 72, and the grommet 50 can be mounted on the mat 7 (see FIGS. 8 and 9). ).

  As a result, the mat 7 is provided with a mounting hole 15 for fixing the main body 10 provided on the inner periphery of the grommet 50.

  When the mat 7 is attached to the carpet 3, the projection passage grooves 66 and 66 on the inner periphery of the base of the grommet 50 are aligned with the first protrusions 25 and 25 on the outer periphery of the columnar portion of the main body 10 attached to the carpet 3. Then, the mat 7 is pushed into the carpet 3.

  Then, the cap 40 enters the mounting hole 15 of the mat 7, and the second projection 49 is guided by the guide surface 67 (see FIG. 9C), passes through the projection passage grooves 66, 66, and positioned. The pressing surfaces 23a of the respective elastic engagement pieces 23 arranged between the ribs 69 and 69 are pressed against the inner periphery of the mounting hole 15, and the elastic engagement pieces 23 and 23 are bent inward.

  When the top of the engagement surface 23 b of the elastic engagement piece 23 passes through the attachment hole 15, the elastic engagement pieces 23, 23 are elastically restored, and the engagement surface 23 b becomes the grommet 50 on the inner periphery of the attachment hole 15. Thus, the mat portion 7 can be attached to the carpet 3 via the fixing device for parts according to the present invention (FIG. 8 and FIG. 8). (Refer to Drawing 9 (a) and (b)).

  In the above state, the first protrusion 25 of the columnar portion 20 enters the proximal end portion 47a of the axial groove 47 of the cap 40, and the second protrusion 49 of the cap 40 is aligned with the protrusion passage groove 66 of the grommet 50. (See FIGS. 9B and 9C).

  When it is desired to remove the mat 7 from the carpet 3 for cleaning or replacement, the cap 40 is first pushed into the columnar portion 20 against the urging force of the spring plates 27 and 27. Then, the first protrusion 25 of the columnar portion 20 moves to the distal end portion 47b of the axial groove 47 of the cap 40, and the bottom surface 45a of the notch 45 of the cap 40 presses the pressing surface 23a and the elastic engagement piece 23. Is bent inward and drawn into the inner periphery of the columnar part (see FIGS. 10B, 11A, and 11B). In this state, the second protrusion 49 of the cap 40 remains in a position aligned with the protrusion passage groove 66 of the grommet 50 (see FIG. 11C).

  Next, the cap 40 is rotated in a predetermined direction with respect to the columnar portion 20 as shown in FIG. In this embodiment, the cap 40 is rotated in the direction of the arrow R1 in FIG. However, since the circumferential grooves 48 are formed on both sides of the axial groove 47, the cap 40 may be rotated in the arrow R2 direction, and the rotation direction can be set as appropriate.

  Then, the first protrusion 25 of the columnar portion 20 enters the circumferential groove 48 of the cap 40, and the axial movement of the cap 40 with respect to the columnar portion 20 is restricted (see FIG. 13B). As a result, the elastic engagement piece 23 is held in a state of being pulled into the inner periphery of the columnar portion, so that the elastic engagement piece 23 is detached from the attachment hole 15 and maintained in a state in which the engagement with the attachment hole 15 is released. (See FIG. 13A). In this state, the second protrusion 49 of the cap 40 is disposed above the inclined surface 68 of the grommet 50 (see FIG. 13C).

  As described above, when the mat 7 is lifted and pulled away from the carpet 3 with the elastic engagement piece 23 removed from the attachment hole 15, the second protrusion 49 of the cap 40 comes into contact with the inclined surface 68 of the grommet 50. Move while. As a result, the cap 40 rotates in the opposite direction (in the direction of arrow R2 in FIG. 10), and after the engagement surface 23b of the elastic engagement piece 23 passes through the mounting hole 15, the second protrusion 49 is inclined. 68, the first projection 25 of the columnar portion 20 enters the axial groove 47 (see FIGS. 15B and 15C), and the carpet 3 The mat 7 can be removed.

  Further, since the cap 40 is biased in the direction opposite to the pushing direction by the biasing force of the spring plates 27, 27, the first protrusion 25 of the columnar portion 20 moves to the proximal end portion 47 a of the axial groove 47. As shown in FIG. 7, the pair of elastic engagement pieces 23, 23 are returned to a state where they protrude outward from the columnar portion 20.

  Thus, in this fixing device, the cap 40 is pushed into the columnar portion 20, and then the pair of elastic engagement pieces 23, 23 are drawn into the inner periphery of the columnar portion by a simple operation. Therefore, the mat 7 can be removed from the carpet 3 easily and smoothly.

  In this embodiment, the disengagement maintaining means including the axial grooves 47 and the circumferential grooves 48 and the first protrusions 25 that move in the grooves is used, so that the cap 40 is pushed into the columnar portion 20. Thus, the cap 40 is pushed in while the first protrusion 25 moves in the axial groove 47, the elastic engagement piece 23 is pressed and pulled into the inner periphery of the columnar portion, and the elastic engagement piece 23, the attachment hole 15, The first protrusion 25 enters the circumferential groove 48 and the axial movement with respect to the columnar portion 20 is restricted by rotating the cap 40 in this state, and the elastic engagement is achieved. Since the disengagement state between the mating piece 23 and the mounting hole 15 can be reliably maintained, the mat 7 can be removed more reliably.

  Further, according to this embodiment, as described above, when the cap 40 is held in the pushed-in state, the columnar portion 20 is extracted from the mounting hole 15 and the mat 7 is removed from the carpet 3. After the second protrusion 49 of 40 abuts on the inclined surface 68 of the inner periphery of the grommet and the cap 40 rotates and the elastic engagement piece 23 comes to a position where it does not engage with the mounting hole 15, Since the projection 25 is configured to return to the axial groove 47 (see FIGS. 14 and 15), the state where the cap 40 is pushed is released, and the elastic engagement piece 23 is projected again from the outer periphery of the columnar portion. (See FIG. 7). Therefore, the elastic engagement piece 23 can be re-engaged with the attachment hole 15 simply by pushing the columnar part 20 into the attachment hole 15, and the mat 7 can be quickly fixed to the carpet 3.

  Furthermore, in this embodiment, as shown in FIGS. 15B and 15C, the length L1 along the circumferential direction of the inclined surface 68 of the grommet 50 is the length along the circumferential direction of the circumferential groove 48 of the cap 40. When the second protrusion 49 of the cap 40 moves out to the protrusion passage groove 66 when the second protrusion 49 of the cap 40 is disengaged from the one end of the sloped part 68 on the base end side, the columnar part 20 is formed. The first protrusion 25 is configured to enter the axial groove 47. Therefore, regardless of the position of the first protrusion 25 in the circumferential groove 48, the second protrusion 49 can be reliably brought into contact with the inclined surface when the columnar portion 20 is extracted from the mounting hole 15. Further, since the first protrusion 25 is configured to enter the axial groove 47 when the second protrusion 49 is disengaged from one end portion of the columnar portion 20 of the slope 68, the cap 40 is returned to the original position. It is possible to reliably return the elastic engagement piece 23 to the columnar portion outer periphery again.

  In this embodiment, the cap 40 is urged in the direction opposite to the pushing direction by the cap urging means comprising the spring plates 27, 27 provided on the inner periphery of the tip of the columnar part 20. When the first protrusion 25 of the portion 20 returns to the axial groove 47, as described above, the cap 40 returns to the original position, and the elastic engagement piece 23 is projected to the outside of the columnar portion. Yes (see FIG. 7). Further, since the spring plate 27 constituting the cap urging means is formed at the distal end portion of the columnar portion 20, space saving can be achieved and the main body portion 10 can be made compact.

  Furthermore, in this embodiment, one part is a carpet 3 for a vehicle, and the other part is a mat 7 placed above the carpet 3, and a grommet 50 is attached to the mat 7 and its inner periphery is attached. Since the holes 15 are formed, the mat 7 can be detachably attached to the carpet 3 through the attachment holes 15 on the inner periphery of the grommet attached to the mat 7.

3 Floor carpet (one part)
7 Floor mat (the other part)
DESCRIPTION OF SYMBOLS 10 Main body part 15 Mounting hole 20 Columnar part 23 Elastic engagement piece 25 1st protrusion 27 Spring board 40 Cap 47 Axial groove 48 Circumferential groove 49 2nd protrusion 50 Grommet 68 Slope

Claims (5)

A body part attached to one part and a mounting hole provided in the other part are provided, and the other part is fixed to the one part by engaging the body part and the mounting hole. In the fixing device for parts to be
The main body is formed with a columnar portion inserted into the mounting hole and elastically engaged with the mounting hole when the columnar portion is inserted into the mounting hole. And a cap that can be pushed and rotated on the columnar part, and is pushed into the columnar part to retract the elastic engagement piece into the columnar part and release the engagement with the mounting hole. And a disengagement maintaining means for maintaining the pushed state of the cap by rotating the cap by a predetermined angle in a state where the cap is pushed and the engagement of the elastic engagement piece is released. And
The disengagement maintaining means includes: a first protrusion formed on one of the columnar part and the cap; and an axial direction in which the first protrusion formed on the other of the columnar part and the cap enters. A groove and a circumferential groove, and when the cap is pushed into the columnar portion, the first protrusion moves along the axial groove, and pushes the cap into the elastic engagement piece. When the cap is rotated by a predetermined angle in the disengaged state, the first protrusion enters the circumferential groove, and the axial movement with respect to the columnar portion is restricted . A component fixing device characterized by that. Between the inner periphery of the mounting hole provided in the other component and the outer periphery of the cap, there is provided a cam mechanism comprising a second protrusion provided on one side and an inclined surface provided on the other side. When the one protrusion moves in the axial groove, the second protrusion and the inclined surface are not in contact with each other, and the columnar portion is inserted into the mounting hole with the first protrusion entering the circumferential groove. When the second protrusion comes into contact with the slope, the cap rotates, and the elastic engagement piece comes to a position where it does not engage with the mounting hole, and then the first protrusion is in the axial groove. securing device component according to claim 1, wherein being configured to back. A length L1 along the circumferential direction of the slope is formed to be equal to or longer than a length L2 of the circumferential groove, and the second protrusion is an end of the slope positioned on the base side of the columnar portion. The component fixing device according to claim 2 , wherein the first protrusion is configured to enter the axial groove when the first protrusion is detached from the portion. The main body portion is provided with a cap urging means for urging the cap in a direction opposite to a direction in which the cap is pushed into the main body portion, and the cap urging means is provided at a tip of the columnar portion. The component fixing device according to any one of claims 1 to 3 , wherein the component fixing device is formed of a spring plate that is formed so as to be able to bend at a portion and elastically abuts against a back surface side of the cap. The one part is a floor carpet for a vehicle, and the main body is fixed to the floor carpet via a clip.
The other part is a floor mat to be placed above the floor carpet, is attached grommet on this floor mat according to claim 1-4, wherein the mounting hole inner periphery thereof is formed The component fixing device according to any one of the above.