JP6247772B2 - Mat fastener - Google Patents

Description

  The present invention relates to a mat fastener for fixing a mat on, for example, a carpet installed on an automobile floor or the like.

  A carpet is laid on the floor of a car such as a passenger car, and a mat is further placed on the carpet to prevent the carpet from becoming dirty. In this case, in order to prevent the mat from moving carelessly with respect to the carpet, a mat fastener for removably fixing the mat on the carpet is used.

  As such a fastener, in Patent Document 1 below, a female member is attached to the tibia pad, a male member that can be engaged with the female member is attached to the dash silencer, and the male member and the female member are engaged. Discloses a clip that can fix a tibia pad to a dash silencer. The male member of this clip includes a male flange that engages the front side of the insertion hole formed in the dash silencer, and a leg that extends from a locked portion provided on the back surface of the male flange and is inserted into the insertion hole. By pushing the leg from the back side of the dash silencer and locking it to the locked part, the leg is folded and spreads and engages with the peripheral edge on the lower surface side of the insertion hole ing.

JP 2003-294071 A

  However, in the clip described in Patent Document 1, when the male member is attached to the dash silencer, it is necessary to push the leg from the back side of the dash silencer to widen the leg and lock it to the locked portion. Workability was not good.

  Accordingly, an object of the present invention is to provide a mat fastener that is easy to attach to a carpet.

In order to achieve the above object, the mat fastener of the present invention extends from the base side engaged with the surface peripheral edge of the carpet mat fixing hole and the back side of the base part, and is inserted into the mat fixing hole. And a pin having a shaft portion inserted into the grommet and a head portion inserted into a mounting hole of a mat disposed on the carpet. In mat fasteners,
The base portion of the grommet has a pin insertion hole into which the shaft portion of the pin is inserted, the locking leg piece extends from a peripheral edge of the back surface of the pin insertion hole, and the pin insertion portion passes through the shaft portion of the pin. By being inserted into the hole, it is pushed and opened by the shaft portion, and is configured to engage with the back surface periphery of the mat fixing hole of the carpet,
An engagement portion is provided between the grommet and the pin to prevent the pin shaft portion from coming off in a state where the pin shaft portion is inserted into the pin insertion hole of the grommet.
The head of the pin is configured to be inserted into the mounting hole of the mat and to be engaged with the peripheral edge of the surface of the mounting hole of the mat by rotating the pin.

  In the mat fastener of the present invention, the shaft portion of the pin is provided with a first flange portion that is disposed between the base portion of the grommet and the mat and abuts on the periphery of the back surface of the mounting hole of the mat. It is preferable.

  In addition, the base of the grommet has a second flange portion facing the back surface of the first flange portion of the pin, a second flange portion having an outer diameter larger than that of the second flange portion, and is engaged with the surface of the carpet. It is preferable that at least one of the first flange portion and the second flange portion is provided with a holding piece that extends from the periphery of the flange portion and embraces the other periphery.

  Further, in a state where the locking leg piece is pushed open by the shaft portion, a portion of the shaft portion that contacts the locking leg piece has a columnar shape, and contacts the shaft portion of the locking leg piece. It is preferable that the portion has an arc shape that matches the cylindrical portion of the shaft portion.

  Further, the locking leg piece is composed of at least a pair, and the engaging portion is formed between the inner periphery of the pin insertion hole of the grommet and the outer periphery of the shaft portion of the pin, and is opposed to the circumferential direction. A pair of first engaging portions provided in contact with the locking leg piece and the outer periphery of the shaft portion in a state where the locking leg piece is pushed open by the shaft portion. A pair of second engaging portions provided opposite to each other in the circumferential direction, and the pair of first engaging portions and the pair of second engaging portions are arranged in an axial direction of the shaft portion. It is preferable that they are provided at positions orthogonal to each other when viewed along.

  Furthermore, a biting convex portion is formed on a surface facing the back surface of the carpet in a state where the locking leg piece is pushed open by the shaft portion, and faces the carpet surface of the base portion. A pressing protrusion is formed on the surface, and there are a plurality of protrusions of at least one of the biting protrusion and the pressing protrusion, and a plurality of protrusions of at least one of the biting protrusion and the pressing protrusion. It is preferable that the other convex part of the said biting convex part and the said pushing convex part is arrange | positioned between.

  In the mat fastener of the present invention, the locking leg piece of the grommet is inserted into the mat fixing hole from the front side of the carpet, and the shaft portion of the pin is inserted into the pin insertion hole of the grommet. Since it can be attached to the carpet simply by pushing open, the attachment workability is good.

It is a disassembled perspective view which shows one Embodiment of the fastener for mats of this invention. It is a perspective view which shows the state which inserted the pin in the grommet of the fastener for mats, and was temporarily fixed. The grommet of the fastener for mat | matte is shown, (a) is the perspective view seen from diagonally upward, (b) is the perspective view seen from diagonally downward. It is a cross-sectional perspective view of the grommet of the fastener for mats. The pin of the fastener for mat | matte is shown, (a) is the perspective view seen from diagonally upward, (b) is the perspective view seen from diagonally downward. It is a cross-sectional perspective view which shows the state which inserted the pin in the grommet of the fastener for mat | matte, and was temporarily fixed. It is sectional drawing which changed the angle of 90 degree | times with the right-hand side and the left-hand side of the center dashed-dotted line which shows the state which inserted the pin to the grommet of the same mat | matte fastener, (a) is a cross section which shows the state temporarily fixed FIG. 4B is a cross-sectional view showing a state where the pin is further pushed in from the temporarily fixed state. It is sectional drawing which shows the state which inserted the pin into the grommet of the same mat | matte fastener, (a) is sectional drawing cut | disconnected in the part which passes along the center of an engagement leg piece, (b) is 90 (a). It is sectional drawing cut in the part which cross | intersects. It is sectional drawing which shows the state which fixed the mat | matte on the carpet with the fastener for the mats.

  Hereinafter, an embodiment of a mat fastener according to the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the mat fastener 100 is used to place and fix a mat 103 on a carpet 101 laid on the floor of a passenger car, for example. In the case of this embodiment, the carpet 101 is provided with a square hole-shaped mat fixing hole 102, and the mat 103 has a substantially circular central portion 105 and a slit-like extension extending from the opposite portion. A mounting hole 104 formed with the portion 106 is provided.

  The mat fastener 100 includes a grommet 200 and a pin 300. The grommet 200 has a pin insertion hole 202 provided in the center, a base 201 that engages with the peripheral edge of the mat fixing hole 102 of the carpet 101, and a back surface of the base 201, and by inserting the pin 300, It has a pair of locking leg pieces 203 that are pushed open to engage with the periphery of the back surface of the mat fixing hole 102 of the carpet 101. The pin 300 is inserted into the shaft portion 301 inserted into the pin insertion hole 202 of the grommet 200 and the mounting hole 104 of the mat 103, and the head engaged with the peripheral surface of the mounting hole 104 by rotating the pin 300. Part 302.

  The grommet 200 will be described in more detail with reference to FIGS. The base 201 of the grommet 200 includes a rectangular frame portion 204 inserted into the mat fixing hole 102 of the carpet 101, columnar guides 205 extending downward from the four corner portions of the frame portion 204, and a carpet. 101 includes a flange-like extending portion 206 that engages with the surface peripheral edge of the mat fixing hole 102, and a second flange portion 207 and a third flange portion 208 that are extended vertically from the peripheral edge. . The outer diameter of the third flange portion 208 is slightly larger than the outer diameter of the second flange portion 207. In this embodiment, the inner diameter side portions of the second flange portion 207 and the third flange portion 208 are connected and integrated with the flange-like extension portion 206, but in the following description, for convenience, the flange-like extension portion 206 is used. A portion forming the upper surface of the second flange portion 207 will be described as a second flange portion 207, and a portion forming the lower surface of the flange-like extension portion 206 will be described as a third flange portion 208.

  On the upper surface of the second flange portion 207, a positioning groove 209 extending in the radial direction is formed at an angle of 90 degrees at the center of each side of the inner periphery of the pin insertion hole 202. In addition, on the back surface of the third flange portion 208, there are a pair of parallel pushing convex portions 216 extending in the outer diameter direction at two locations facing the circumferential direction corresponding to the portion where the locking leg piece 203 is extended. , Respectively (see FIG. 3B). The number of the pushing protrusions 216 is not limited to a pair, and may be one or more. Further, in the center of the two sides of the inner periphery of the pin insertion hole 202 in the direction in which the locking leg piece 203 is not located, the inner surface of the second flange part 207 is directed slightly inwardly from the pin insertion hole 202. A pair of extended first engaging pieces 210 are provided (see FIG. 3A). The number of the first engagement pieces 210 is not limited to a pair and may be one or more.

  The locking leg pieces 203 are extended from the lower edge portions of the two opposing sides of the rectangular frame-shaped portion 204 via thin-walled hinge portions 211. The locking leg piece 203 can be expanded via the hinge portion 211. A base end portion 212 that protrudes from the hinge portion 211 toward the base end side is provided at the base portion of the locking leg piece 203. The base end portion 212 is a portion that abuts against the distal end portion of the shaft portion 301 when the shaft portion 301 of the pin 300 is inserted into the pin insertion hole 202 and expands the locking leg piece 203 (see FIG. 7). ). An arcuate contact surface 213 that fits the outer periphery of the shaft portion 301 of the pin 300 and a second engagement groove 214 formed along the center in the width direction are formed on the end surface of the base end portion 212. Note that the number of the locking leg pieces 203 is not limited to a pair, and may be one or more.

  In addition, a plurality of biting protrusions 215 are arranged in a plurality of rows (on the outer surfaces of the pair of locking leg pieces 203, in other words, on the portion that comes into contact with the periphery of the back surface of the mat fixing hole 102 of the carpet 101 when expanded. In this embodiment, it is formed in three rows in the width direction. In relation to this, as described above, on the back surface of the third flange portion 208, a pair of push-in convex portions 216 forming ridges are formed so as to be positioned between the rows of the bite-in convex portions 215. .

  When the protruding amount of the biting convex portion 215 is long, when the locking leg piece 203 is expanded, the outer side surface of the locking leg piece 203 and the back surface of the carpet 101 are not in direct contact, and only the biting convex portion 215 is present. The state may be in contact with the back surface of the carpet 101.

  Further, the number of the biting convex portions 215 and the pressing convex portions 216 is not limited, and there are a plurality of at least one convex portion, and the biting convex portions 215 and the pressing convex portions 216 are disposed between at least one of the plurality of convex portions, The other convex part of the biting convex part 215 and the pushing convex part 216 should just be arrange | positioned (refer FIG. 9).

  Next, the pin 300 will be described in more detail with reference to FIGS. The head 302 of the pin 300 includes a handle portion 303 and a knob portion 304. The handle portion 303 has an outer diameter that can be inserted into the central portion 105 of the attachment hole 104 in FIG. 1, and the knob portion 304 can be inserted into the slit-like extension portion 106 of the attachment hole 104 to rotate the pin 300. When the knob portion 304 is at an angle orthogonal to the slit-like extending portion 106, the width and length engage with the mounting hole 104 (see FIG. 9).

  A first flange portion 305 is provided between the shaft portion 301 and the head portion 302 of the pin 300 to engage with the peripheral edge of the back surface of the mounting hole 104 of the mat 103 shown in FIG. The first flange portion 305 has substantially the same outer diameter as the third flange portion 208 of the grommet 200, and the first flange portion 305 and the second flange portion 207 are disposed at two locations facing the circumferential direction of the first flange portion 305. A holding piece 306 extending so as to embrace the peripheral edge of the second flange portion 207 is provided. Positioning protrusions that engage with the positioning grooves 209 on the upper surface of the second flange portion 207 of the grommet 200 described above are provided at two locations on the back surface of the first flange portion 305 in the direction orthogonal to the holding piece 306 and opposed in the circumferential direction. A portion 307 is formed.

  In this embodiment, the holding piece 306 is positioned in the same direction as the protruding direction of the knob portion 304. However, the number of the holding pieces 306 is not particularly limited and may be at least one, but is preferably two or more arranged at an equal angle in the circumferential direction. Further, the holding piece 306 may be formed so as to extend from the second flange portion 207 and embrace the periphery of the first flange portion 305.

  At two locations corresponding to the circumferential direction of the outer periphery of the shaft portion 301 of the pin 300, a temporary engagement groove 308 is formed to engage the first engagement piece 210 of the grommet 200. When the shaft portion 301 of the pin 300 is inserted into the pin insertion hole 202 of the grommet 200, the pin 300 is temporarily fixed to the grommet 200 by engaging the first engagement piece 210 with the temporary engagement groove 308. (See FIG. 6). By shipping from the factory in this state, the user can save the trouble of assembling the pin 300 to the grommet 200, so that workability can be improved. The numbers of the first engagement pieces 210 and the temporary engagement grooves 308 are not limited to a pair, and may be at least one.

  An annular first engagement groove 309 is formed on the outer periphery of the base portion of the shaft portion 301 of the pin 300. When the shaft portion 301 of the pin 300 is maximally pushed into the pin insertion hole 202 of the grommet 200, the first engagement piece 210 of the grommet 200 is engaged with the first engagement groove 309 of the pin 300, and the grommet 200 is engaged. Thus, the pin 300 is prevented from coming off (see FIG. 8B). The base 201 and the first engagement groove 309 constitute a first engagement portion in the present invention.

  Further, an annular second engaging convex portion 310 is formed on the outer periphery of the tip portion of the shaft portion 301 of the pin 300. When the shaft portion 301 of the pin 300 is pushed into the pin insertion hole 202 of the grommet 200 to the maximum extent, the locking leg piece 203 of the grommet 200 is expanded and expanded, and an arcuate contact surface 213 is formed on the outer periphery of the shaft portion 301. Are in contact with each other, and the second engagement protrusion 310 is engaged with the second engagement groove 214 (see FIG. 8A). This also prevents the pin 300 from coming off from the grommet 200. The second engaging groove 214 and the second engaging convex portion 310 constitute a second engaging portion in the present invention. In addition, the relationship between the engagement groove | channel and engagement convex part of a 1st engagement part and a 2nd engagement part may be reverse to the above.

  Next, the function and effect of the mat fastener 100 of the present invention having the above configuration will be described.

  As shown in FIG. 6, the shaft portion 301 of the pin 300 is inserted into the pin insertion hole 202 of the grommet 200, and the first engagement piece 210 is engaged with the temporary engagement groove 308, so that the pin 300 is grommeted. 200 can be temporarily fixed. By shipping from the factory in this state, the user can use the mat fastener 100 in a state in which the pin 300 is already assembled to the grommet 200, so that workability is improved.

  Then, when the columnar guide 205 of the grommet 200 is positioned at the four corners of the mat fixing hole 102 and the locking leg piece 203 is inserted into the mat fixing hole 102 of the carpet 101, as shown in FIG. The back surface of the third flange portion 208 comes into contact with the peripheral edge of the surface of the mat fixing hole 102. However, when the protruding amount of the push-in convex part 216 is long, the push-in convex part 216 comes into contact with the peripheral edge of the surface of the mat fixing hole 102, and the back surface of the third flange part 208 directly contacts the peripheral edge of the surface of the mat fixing hole 102. It does not have to abut.

  In this state, when the shaft portion 301 of the pin 300 is further pushed into the pin insertion hole 202 of the grommet 200, the distal end portion of the shaft portion 301 becomes the proximal end portion 212 of the locking leg piece 203 as shown in FIG. The locking leg piece 203 is expanded by the shaft portion 301.

  Then, when the shaft portion 301 of the pin 300 is pushed into the pin insertion hole 202 of the grommet 200 to the maximum extent, as shown in FIGS. 8A and 8B, the locking leg piece 203 further expands and the carpet 101 It is pressed against the back of the. Further, the first engagement piece 210 of the grommet 200 is engaged with the first engagement groove 309 of the pin 300, the shaft portion 301 of the pin 300 is brought into contact with the arcuate contact surface 213 of the locking leg piece 203, and The second engagement convex portion 310 of the shaft portion 301 of the pin 300 is engaged with the second engagement groove 214 of the locking leg piece 203. Here, as described above, the first engagement piece 210 and the first engagement groove 309 constitute the first engagement portion according to the present invention, and the second engagement groove 214 and the second engagement convex portion 310 according to the present invention. Since the engagement position of the first engagement part and the engagement position of the second engagement part are orthogonal to each other, the pin 300 is attached to the grommet 200. It can be stably retained.

  In this state, as shown in FIG. 9, the carpet 101 is sandwiched between the third flange portion 208 and the locking leg piece 203, and the plurality of biting protrusions 215 of the locking leg piece 203 are formed on the back surface of the carpet 101. The pushing protrusions 216 of the third flange portion 208 are positioned between the rows of the biting protrusions 215 and are pushed into the surface of the carpet 101. The mat fastener 100 can be firmly fixed.

  In the case of this embodiment, the rows of the biting convex portions 215 are formed by arranging two biting convex portions 215 in the protruding direction of the locking leg pieces 203 and forming three rows in the width direction of the locking leg pieces 203. The pushing protrusions 216 extend in a direction perpendicular to the sides of the frame-like part 204 so as to be positioned between the rows of the biting protrusions 215, but the direction of the row of the biting protrusions 215 In addition, the extending direction of the pushing protrusion 216 is not particularly limited.

  In addition, the first flange portion 305 of the pin 300 is in contact with the upper surface of the second flange portion 207 of the grommet 200, and the holding piece 306 of the first flange portion 305 is held so as to hold the periphery of the second flange portion 207.

  Then, the head 302 of the pin 300 is inserted into the mounting hole 104 of the mat 103 shown in FIG. At this time, the knob portion 304 can be smoothly inserted into the slit-like extension portion 106 by matching the slit-like extension portion 106 of the attachment hole 104 with the longitudinal direction of the knob portion 304.

  In this state, the knob portion 304 is held by hand and the entire pin 300 is rotated so that the longitudinal direction of the knob portion 304 is perpendicular to the slit-like extending portion 106 of the mounting hole 104. Can be engaged with the attachment hole 104 to fix the mat 103 to the carpet 101. At this time, the holding piece 306 of the first flange portion 305 holds the peripheral edge of the second flange portion 207, and the shaft portion 301 of the pin 300 is in contact with the arcuate contact surface 213 of the grommet 200. The pin 300 can be smoothly rotated. Moreover, it can suppress that the periphery of the 2nd flange part 207 turns up with respect to the 3rd flange part 208. FIG. Furthermore, since the holding piece 306 embraces the peripheral edge of the second flange portion 207, it also serves as a guide when the pin 300 rotates.

  Alternatively, another grommet may be attached to the attachment hole 104 of the mat 103 so that the knob portion 304 of the pin 300 engages with the attachment hole formed in the grommet. In the present invention, the “mat mounting hole” is not limited to a mounting hole directly formed on the mat, but also includes a mounting hole formed on a grommet mounted on the mat.

  Further, since the third flange portion 208 has an outer diameter larger than that of the second flange portion 207, when the pin 300 is rotated, the fluff on the surface of the carpet 101 is caused by the second flange portion 207 and the holding piece 306. Therefore, it is possible to maintain smooth rotation.

  The rotation position of the pin 300 is clicked at a predetermined position by engaging the positioning protrusion 307 on the back surface of the first flange portion 305 of the pin 300 with the positioning groove 209 on the surface of the second flange portion 207 of the grommet 200. Since it can be stopped with a feeling, the longitudinal direction of the knob portion 304 of the head 302 is stopped at a position orthogonal to the direction of the slit-like extending portion 106 of the attachment hole 104 of the carpet 101 and held at that position. Can be made.

  Thus, according to the present invention, the locking leg piece 203 of the grommet 200 of the mat fastener 100 is inserted into the mat fixing hole 102 from the surface side of the carpet 101, and in this state, the shaft portion of the pin 300 is inserted. Since the mat fastener 100 can be fixed to the carpet 101 simply by pushing 301, the work from the back side of the carpet 101 is not necessary, and the attachment workability can be improved. Further, since the mat fastener 100 can be composed of two parts, that is, the grommet 200 and the pin 300, the number of parts can be reduced, the manufacturing cost can be reduced, and the assembling workability and handleability can be improved.

  In addition, when the occupant gets on the mat 103 in the state shown in FIG. 9, the surface pressure is applied to the first flange portion 305 of the pin 300, so that the pin 300 becomes difficult to rotate and the pin 300 rotates carelessly. The knob portion 304 can be prevented from coming out of the mounting hole 104 in parallel with the slit-like extension portion 106 of FIG. Further, by providing the first flange portion 305, the pushing position of the pin 300 can be regulated.

DESCRIPTION OF SYMBOLS 100 Mat fastener 101 Carpet 102 Mat fixing hole 103 Mat 104 Mounting hole 105 Center part 106 Slit-like extension part 200 Grommet 201 Base part 202 Pin insertion hole 203 Locking leg piece 204 Frame-like part 205 Columnar guide 206 Flange-like extension Protruding portion 207 Second flange portion 208 Third flange portion 209 Positioning groove 210 First engagement piece 211 Hinge portion 212 Base end portion 213 Arc-shaped contact surface 214 Second engagement groove 215 Biting convex portion 216 Pushing convex portion 300 Pin 301 Shaft part 302 Head part 303 Handle part 304 Knob part 305 First flange part 306 Holding piece 307 Positioning convex part 308 Temporary engagement groove 309 First engagement groove 310 Second engagement convex part

Claims (6)

A grommet having a base engaged with the peripheral edge of the surface of the mat fixing hole of the carpet, and a locking leg piece extending from the back side of the base and inserted into the mat fixing hole and engaged with the peripheral edge of the back surface; A mat fastener comprising a shaft portion inserted into the grommet and a pin having a head portion inserted into a mat mounting hole disposed on the carpet,
The base portion of the grommet has a pin insertion hole into which the shaft portion of the pin is inserted, the locking leg piece extends from a peripheral edge of the back surface of the pin insertion hole, and the pin insertion portion passes through the shaft portion of the pin. By being inserted into the hole, it is pushed and opened by the shaft portion, and is configured to engage with the back surface periphery of the mat fixing hole of the carpet,
An engagement portion is provided between the grommet and the pin to prevent the pin shaft portion from coming off in a state where the pin shaft portion is inserted into the pin insertion hole of the grommet.
The head of the pin is configured to be inserted into the mounting hole of the mat and to be engaged with the peripheral edge of the surface of the mounting hole of the mat by rotating the pin. Fastener.   2. The mat fastener according to claim 1, wherein the shaft portion of the pin is provided with a first flange portion disposed between the base portion of the grommet and the mat and abutting against a peripheral edge of the back surface of the mounting hole of the mat. Ingredients.   The base of the grommet has a second flange portion facing the back surface of the first flange portion of the pin, and a third flange having an outer diameter larger than that of the second flange portion and engaging the surface of the carpet. 3. A mat for a mat according to claim 2, wherein at least one of the first flange portion and the second flange portion is provided with a holding piece that extends from a peripheral edge thereof and embraces the other peripheral edge. Fastener.   In a state where the locking leg piece is pushed open by the shaft portion, a portion of the shaft portion that contacts the locking leg piece has a cylindrical shape, and a portion of the locking leg piece that contacts the shaft portion is The mat fastener according to any one of claims 1 to 3, wherein the mat member has an arc shape that matches a cylindrical portion of the shaft portion.   The locking leg piece is composed of at least a pair, and the engaging portion is formed between an inner periphery of the pin insertion hole of the grommet and an outer periphery of the shaft portion of the pin. A pair of first engaging portions provided and a periphery formed at a contact portion between the locking leg piece and the outer periphery of the shaft portion in a state where the locking leg piece is pushed open by the shaft portion; A pair of second engaging portions provided opposite to each other in the direction, wherein the pair of first engaging portions and the pair of second engaging portions are along an axial direction of the shaft portion. The mat fastener according to any one of claims 1 to 4, wherein the mat fastener is provided at positions orthogonal to each other when viewed.   In a state where the locking leg piece is pushed open by the shaft portion, a biting convex portion is formed on a surface facing the back surface of the carpet, and on a surface facing the carpet surface of the base portion, , A push-in convex part is formed, and there are a plurality of at least one convex part of the bite convex part and the push-in convex part, and between at least one convex part of the bite-in convex part and the push-in convex part. The mat fastener according to any one of claims 1 to 5, wherein the other convex portion of the biting convex portion and the pushing convex portion is disposed.

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