JP4485281B2 - Fastener - Google Patents

Description

  The present invention relates to a fastener used when a ceiling plate is attached to a roof panel on a ceiling surface of a vehicle.

  2. Description of the Related Art Conventionally, a ceiling plate is provided on a ceiling surface in a vehicle compartment and is attached to a roof panel on the ceiling surface of the vehicle. Thus, in order to attach a ceiling board to a roof panel, the fastener comprised with a pin and a grommet is used.

  For example, when the fastener of Patent Document 1 is used for attaching a ceiling plate, first, a pin is inserted into a cylindrical grommet so that the pin does not come off from the grommet. Next, the four legs of the grommet are inserted into the mounting holes respectively formed in the roof panel and the ceiling plate, and the pins are pushed into the back of the grommet.

  Here, the inner surface of the leg part facing each other is provided with an expansion point smaller than the outer diameter dimension of the pin, and the inner surface of the leg part is provided with an expansion point smaller than the outer diameter dimension of the pin. The distance from the buttocks is different between the expansion point and the expansion point.

  Thus, depending on the amount of movement of the pin, first, two legs are pushed and expanded at the first expansion point, and two more legs are added at the next expansion point, for a total of four legs. It will be expanded.

  And the nail | claw part protrudingly provided by the front-end | tip part of the leg part is latched by the recessed part provided over the perimeter of the pin. Thus, by inserting and locking the pin into the grommet, the ceiling plate and the roof panel are sandwiched between the grommets and the outer surfaces of the legs, and the ceiling plate is attached to the roof panel.

  By the way, between the ceiling plate and the roof panel, there is a case where there is a molded ceiling as a buffer member, and there is a case where there is no molded ceiling.

However, the insertion force when inserting the pin into the grommet increases with and without the molded ceiling, and if this insertion force is too large, the burden on the operator increases. The workability will be reduced. On the other hand, when the insertion force is set based on the case where there is a molded ceiling, there may be a case where the play is generated when there is no molded ceiling.
JP-A-11-270525

  In view of the above facts, an object of the present invention is to provide a fastener having good workability without being rattled even when the thickness of the plate material is thin and also when the plate thickness of the plate material is thick.

The invention according to claim 1 is a ceiling plate that is superimposed on a roof panel or a ceiling plate that is superimposed on the roof panel via a molded ceiling, and a roof panel that extends from the flange and the roof panel, A plurality of legs to be inserted into the mounting holes formed in the molded ceiling and the ceiling plate, and inserted into the inside of the legs from the through holes formed in the flanges, and the legs are spread to the attachment A fastener that includes a shaft that presses against a hole wall of the hole, wherein the leg portion includes a first leg portion having a first protrusion portion provided on an inner side of a distal end portion, and the first projecting portion portion and an axial direction. And a second leg provided with a second protrusion on the side of the buttock. The first leg is formed on the shaft body and the first leg piece is spread outward. the first recess protrusion is locked, the second leg than the first leg piece is formed in the shaft body The second protrusion in a state of widening toward the side is characterized by having a second recess for locking.

  According to the first aspect of the present invention, the leg portion of the fastener is composed of the first leg portion and the second leg portion. In the first leg portion, the first protrusion is provided inside the distal end portion, and the second leg portion is provided. In the section, the position of the first leg portion and the axial direction is changed, and the second protrusion is provided on the flange side of the fastener.

On the other hand, the shaft is provided with a first recess corresponding to a first leg, also provided a second recess in correspondence to the second leg. The first protrusion and the second protrusion are brought into contact with the shaft body , respectively, and the first leg and the second leg are spread from the inside, and the first protrusion and the second protrusion are formed as the first recess and the second recess, respectively. To lock each.

Here, the first protrusion is provided at the tip of the first leg, and the second protrusion is provided on the buttocks side in a different axial position from the first leg, and is more than the first leg. The two leg pieces are locked while being pushed outward.

  Thus, even if the plate thickness of the plate material is thin, the plate material is securely sandwiched at least between the collar portion and the second leg portion by spreading the second leg portion more than the first leg portion. The fasteners are not loose.

  On the other hand, when the plate thickness of the plate is thick, the insertion resistance on the second leg side is increased by spreading the second leg part more than the first leg part, but the first leg part and the second leg part are increased. In comparison with the case where the plate material is sandwiched at the same spread angle, the insertion force of the shaft body becomes smaller as the insertion resistance on the first leg side is smaller. For this reason, even when the plate thickness of the plate material is large, an appropriate insertion force that does not burden the operator can be obtained, and workability can be improved.

  The invention according to claim 2 is the fastener according to claim 1, wherein the first protrusion and the second protrusion are engaged with the shaft body, respectively, and the first leg and the second leg are engaged. It is characterized in that a constricted portion for reducing the diameter is provided.

  In the invention according to claim 2, the shaft body is provided with a constricted portion where the first protrusion and the second protrusion can be engaged with each other, and the first protrusion and the second protrusion are engaged with the constricted portion. The diameter of the leg and the second leg is reduced. Thereby, the leg part comprised by a 1st leg part and a 2nd leg part can be penetrated through the attachment hole formed in the board | plate material, and a fastener can be removed from a board | plate material.

  According to a third aspect of the present invention, in the fastener according to the first or second aspect of the present invention, a retaining portion that extends between the first leg portion and the second leg portion is provided at a distal end portion of the shaft body. It is characterized by being provided.

  In the invention according to claim 3, the shaft body is prevented from easily coming off from the leg portion by providing a retaining portion that extends between the first leg portion and the second leg portion at the distal end portion of the shaft body. be able to.

  According to a fourth aspect of the present invention, in the fastener according to any one of the first to third aspects, at least the first leg portion is a plurality of the first leg portion and the second leg portion. It is characterized by being.

  In the invention according to claim 4, the first leg and the second leg can be obtained by using a plurality of at least the first leg and using three or more of the first leg and the second leg. Compared with the case where there is one each, the stability when sandwiching the plate material is achieved.

The invention according to claim 5, in fastener according to any one of claims 2 4, wherein the first protrusion is engaged in the first recess, the second protrusion is the When further the shaft body from locked state to the second recess pushed between the second leg and the first leg, it engages the first protrusion and the second protrusion is the constricted portion It is characterized by doing.

In the invention described in claim 5, the first protrusion is engaged with the first recess, the second first leg further shaft body from a state in which the protrusion is engaged in the second recess and the second leg portion by pushing it between, it is possible to engage the first protrusion and the second protrusion in the constricted portion.

  In general, when comparing the operation of pulling out the shaft body and the operation of pushing in the shaft body, the operation of pushing in is often easier for the operator. For this reason, an operator's burden at the time of removing a fastener from a board | plate material can be reduced.

  Since the present invention is configured as described above, in the invention according to claim 1, even if the plate material is thin, the second leg portion is pushed outward more than the first leg portion, so that at least the collar portion. Since the plate member can be securely held between the second leg portion and the second leg portion, the fastener is not loose. On the other hand, when the plate thickness of the plate is thick, the insertion resistance on the second leg side is increased by spreading the second leg part more than the first leg part, but the first leg part and the second leg part are increased. In comparison with the case where the plate material is sandwiched at the same spread angle, the insertion force of the shaft body becomes smaller as the insertion resistance on the first leg side is smaller. For this reason, even when the plate thickness of the plate material is large, an appropriate insertion force that does not burden the operator can be obtained, and workability can be improved.

  According to the second aspect of the present invention, the leg portion constituted by the first leg portion and the second leg portion can be inserted through the attachment hole formed in the plate material, and the fastener can be removed from the plate material. In the invention according to claim 3, the shaft body can be prevented from being easily detached from the leg portion. In the invention according to claim 4, the stability when the plate material is sandwiched is achieved as compared with the case where each of the first leg portion and the second leg portion is one. In invention of Claim 5, when a fastener is removed from a board | plate material, an operator's burden can be eased.

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

  As shown in FIGS. 4A and 4B, the roof panel 10 is attached with a ceiling plate 14 via a fastener 12 (in FIG. 4A, the roof panel 10 and the ceiling panel are attached). 14 shows a case where the molded ceiling 54 is provided as a buffer member, and FIG. 4B shows a case where the molded ceiling 54 is not provided. Hereinafter, the case where the shaping | molding ceiling 54 exists between the roof panel 10 and the ceiling board 14 is demonstrated.

  The fastener 12 includes a cylindrical grommet 16 that can be inserted into the mounting holes 10A, 54A, and 14A formed in the roof panel 10, the molded ceiling 54, and the ceiling plate 14, respectively, and a pin 18 that can be inserted into the grommet 16. It consists of

  As shown in FIGS. 1 and 2A, the pin 18 has a substantially cylindrical shape, and an enlarged diameter portion 20 is provided at one end portion (rear end portion) of the pin 18. In the central portion in the axial direction of the enlarged diameter portion 20, meat stealing portions 21 (see FIG. 2B) are provided at intervals of 90 ° so that the enlarged diameter portion 20 does not sink after the pin 18 is formed. I have to.

  Further, ribs 22 project from the outer peripheral surface of the pin 18 excluding the enlarged diameter portion 20 at 90 ° intervals along the circumferential direction of the pin 18, and are formed along the axial direction of the pin 18. The height of the tip portion of this is flush with the enlarged diameter portion 20.

  On the other hand, at the other end portion (tip portion) of the pin 18, a retaining portion 24 is formed at the distal end portion of the pair of ribs 22, and the end portion of the retaining portion 24 is formed from the distal end portion of the rib 22. Is slightly overhanging. A cutout portion 26 is cut out at the base portion of the retaining portion 24 so that the retaining portion 24 can be elastically deformed.

  Further, as shown in FIGS. 2A, 2C and 2D, the pin 18 has constricted portions 28 and 30 recessed between the ribs 22 adjacent to each other. The positions of the portions 28 and 30 are staggered along the axial direction of the pin 18.

  Concave portions 32 and 34 are respectively formed in the constricted portions 28 and 30 on the side of the retaining portion 24 so as to be shallower than the constricted portions 28 and 30, and the positions of the recessed portions 32 and 34 are the same as the constricted portion 28. It is staggered along the axial direction. On the side of the retaining portion 24 of the recesses 32 and 34, inclined surfaces 36 and 38 that are inclined in the direction of gradually reducing the diameter are formed, respectively.

  On the other hand, as shown in FIG. 1 and FIG. 2A, the grommet 16 includes a flange portion 40 and a leg portion 48, and a through hole 40A into which the pin 18 can be inserted is formed in the flange portion 40. ing. The through hole 40A is slightly larger than the outer diameter of the enlarged diameter portion 20 of the pin 18, and a pair of positioning portions 44 are provided facing the inner edge portion of the through hole 40A.

  As shown in FIG. 4 (A), the flange 40 has a larger outer diameter than the mounting hole 14A of the ceiling plate 14, and can contact the peripheral edge of the mounting hole 14A. A leg portion 48 protrudes from one end surface of the flange portion 40 and can be inserted into the mounting holes 10A, 54A and 14A of the roof panel 10, the molded ceiling 54 and the ceiling plate 14.

  Further, as shown in FIGS. 1 and 3, the leg portion 48 is 90 ° along the circumferential direction of the leg portion 48 with reference to a position where the positioning portion 44 provided on the collar portion 40 is projected and coincides with the leg portion 48. Each time, a slit 46 is formed along the axial direction of the leg 48, and the leg pieces 50 and 52 separated by the slit 46 can be elastically deformed.

  The leg portion 48 is divided into a leg piece 50 and a leg piece 52 that face each other, and the separation distance between the inner surfaces of the leg pieces 50 and the separation distance between the inner surfaces of the leg pieces 52 are respectively larger than those of the through holes 40A of the flange portion 40. It is getting smaller.

  In addition, protrusions 50A and 52A project from the inner surfaces of the leg pieces 50 and 52, respectively, the protrusion 52A is provided at the tip of the leg piece 52, and the protrusion 50A is positioned with the protrusion 52A in the axial direction of the leg 48. To make it alternate.

  Next, the usage method of the fastener which concerns on embodiment of this invention is demonstrated.

  First, as shown in FIGS. 2A and 3, the pin 18 is inserted into the grommet 16. At this time, when the retaining portion 24 at the tip end of the pin 18 is engaged with the positioning portion 44 formed on the flange portion 40 of the grommet 16, and the pin 18 is pushed into the back of the grommet 16 in this state, the retaining portion 24. Is elastically deformed and passes through the through hole 40A of the flange 40.

  Here, since the positioning portion 44 and the slit 46 of the leg portion 48 coincide with each other in the projected state, when the retaining portion 24 passes through the through hole 40A of the collar portion 40, the retaining portion 24 is Reach the slit 46 between the piece 50 and the leg 52 and restore.

  By the way, the through hole 40 </ b> A of the flange portion 40 is slightly larger than the outer diameter of the enlarged diameter portion 20 of the pin 18. In other words, the distance between the tips of the opposing ribs 22 is only slightly smaller than the inner diameter of the through hole 40A of the flange 40, and the inner surfaces of the leg piece 50 and the leg 52 facing each other are separated from each other. Greater than distance.

  For this reason, in a state where the rib 22 is inserted into the leg portion 48 of the grommet 16, the tip end portion of the rib 22 enters the slit 46 formed between the leg piece 50 and the leg piece 52 (see FIG. 3). Further, displacement of the leg pieces 50 and 52 in the circumferential direction during elastic deformation is prevented.

  The retaining portion 24 located at the tip of the rib 22 moves in the slit 46 between the leg piece 50 and the leg piece 52 as the pin 18 moves, and when it reaches the back wall of the slit 46, the movement restriction Therefore, it cannot be easily detached from the grommet 16.

  On the other hand, as shown in FIG. 5, the leg portion 48 of the grommet 16 is attached in a state where the attachment hole 10A of the roof panel 10, the attachment hole 54A of the molded ceiling 54, and the attachment hole 14A of the ceiling plate 14 are aligned. The holes 14 </ b> A, 54 </ b> A and 10 </ b> A are inserted, and the flange 40 of the grommet 16 is brought into contact with the peripheral edge of the mounting hole 14 </ b> A of the ceiling plate 14.

  Next, as shown in FIG. 6, the rear end portion of the pin 18 protruding from the collar portion 40 of the grommet 16 in a state of being inserted into the grommet 16 is pressed, and the pin 18 is pushed into the back of the grommet 16.

  Here, inclined surfaces 36 and 38 are formed at the tip of the pin 18, but first, the protrusion 50 </ b> A of the leg piece 50 of the grommet 16 abuts on the inclined surface 36, and the leg piece along the inclined surface 36. 50 is gradually expanded, but in the state where the protrusion 50A of the leg piece 50 is in contact with the inclined surface 36, the protrusion 52A of the leg piece 52 is not in contact with the inclined surface 38, and thus the leg piece 52 Does not spread.

  When the pin 18 is pushed further into the grommet 16, the protrusion 52 </ b> A of the leg piece 52 comes into contact with the inclined surface 38. If the pin 18 is further pushed in from this state, in addition to the leg piece 50, the leg piece 52 is also gradually pushed out.

  When the pin 18 is pushed further into the grommet 16, the protrusion 50A of the leg piece 50 enters the recess 32 of the pin 18 and the protrusion 52A of the leg piece 52 is inserted into the pin 18 as shown in FIG. The pin 18 enters the recess 34 and is locked to the grommet 16.

  In this state, the ceiling plate 14, the formed ceiling 54, and the roof panel 10 are sandwiched between the flange portion 40 and the outer surfaces of the leg pieces 50 and 52, and the ceiling plate 14 is attached to the roof panel 10.

  When the pin 18 is pushed further into the grommet 16 from this state, the protrusion 50A of the leg piece 50 exceeds the peripheral wall of the recess 32, and the protrusion 52A of the leg piece 52 exceeds the peripheral wall of the recess 34, as shown in FIG. As described above, the protrusion 50A of the leg piece 50 enters the constricted portion 28, and the protrusion 52A of the leg piece 52 enters the constricted portion 30, so that the leg pieces 50, 52 that have spread outward are reduced in diameter.

  For this reason, the leg pieces 50 and 52 can be inserted through the mounting hole 10A of the roof panel 10, the mounting hole 54A of the molded ceiling 54, and the mounting hole 14A of the ceiling plate 14, thereby the roof panel 10, the molded ceiling 54, and the ceiling. The fastener 12 can be removed from the plate 14.

  Next, the operation of the fastener according to the embodiment of the present invention will be described.

  As shown in FIG. 3 (A), the positions of the recesses 32 and 34 provided in the pin 18 are changed in the axial direction of the pin 18 so as to be staggered at 90 ° intervals in the circumferential direction of the pin 18. Further, the positions of the protrusions 50A and 52A provided on the leg pieces 50 and 52 of the grommet 16 are changed in the axial direction of the leg portion 48, and can be locked to the recesses 32 and 34.

  Thus, by changing the positions of the protrusions 50A and 52A between the leg piece 50 and the leg piece 52, the spread amount of the leg pieces 50 and 52 can be changed. Specifically, since the protrusion 52 </ b> A of the leg piece 52 is provided at the tip of the leg piece 52, the leg piece 50 spreads outward than the leg piece 52.

  By the way, as shown to FIG. 4 (A) and (B), between the ceiling board 14 and the roof panel 10, with and without the shaping | molding ceiling 54, the case with and without the shaping | molding ceiling 54 Then, the plate thickness of the plate material 56 (the ceiling plate 14 and the roof panel 10, or the ceiling plate 14, the roof panel 10 and the molded ceiling 54) changes.

  For this reason, by making the leg piece 50 wider than the leg piece 52, even when there is no molded ceiling 54 (when the plate thickness of the plate material 56 is thin), at least the flange 40 and the leg piece 50 Since the board | plate material 56 can be clamped between them reliably, the fastener 12 does not rattle.

  On the other hand, when the molded ceiling 54 is present (when the plate material 56 is thick), the leg piece 50 spreads more outward than the leg piece 52, so that the insertion resistance on the leg piece 50 side is increased, but the leg piece 50. As compared with the case where the plate member 56 is sandwiched between the leg pieces 52 at the same spread angle, the insertion force of the pin 18 is reduced by the amount of insertion resistance on the leg piece 52 side. For this reason, even when the plate | board material 56 is thick, it can be set as the moderate insertion force which does not become a burden for an operator, and workability | operativity can be improved.

  Further, when the pin 18 is pushed into the grommet 16, the leg piece 50 is first spread and then the leg piece 52 is pushed and spread together with the leg piece 50 so that the pin 18 is inserted according to the stroke. The force is changed so that a large insertion force is not applied immediately after the work is started, so that the operator can easily adjust the insertion force.

  Further, the protrusion 50A is locked to the recess 32, and the pin 52 is further pushed into the grommet 16 from the state where the protrusion 52A is locked to the recess 34. 52A is released from the recess 34, and the protrusion 50A and the protrusion 52A are engaged with the constricted portions 28 and 30 as shown in FIG.

  In general, when the operation of pulling out the pin 18 is compared with the operation of pushing the pin 18, the operation of pushing the pin 18 is often easier for the operator. Therefore, the burden on the operator can be reduced by removing the fastener 12 from the plate material 56 by the operation of pushing the pin 18.

  Here, the leg piece 50 and the leg piece 52 are made to face each other, and two pieces are used respectively. However, regardless of the plate thickness of the plate material 56, the plate material 56 is securely clamped without rattling of the fastener 12. However, it is not limited to this. For example, the leg pieces 50 and 52 may each be one, the leg pieces 50 may be two, and the leg pieces 52 may be one.

It is a disassembled perspective view of the fastener which concerns on embodiment of this invention. (A) is the front view of the pin which comprises the fastener which concerns on embodiment of this invention, and sectional drawing of a grommet, (B)-(D) are sectional drawings of the pin shown to (A). . (A) is the front view of the pin which comprises the fastener which concerns on embodiment of this invention, and sectional drawing of a grommet, and has shown the state which inserted the pin in the grommet. It is sectional drawing which shows the state which attached the ceiling board to the roof panel via the fastener which concerns on embodiment of this invention, (A) shows the case where there is a shaping | molding ceiling, (B) shows the case where there is no shaping ceiling. ing. It is sectional drawing which shows the state before attaching a ceiling board to a roof panel via the fastener which concerns on embodiment of this invention. It is sectional drawing which shows the state in the middle of attaching a ceiling board to a roof panel via the fastener which concerns on embodiment of this invention. It is sectional drawing explaining the method to remove the fastener which concerns on embodiment of this invention from a ceiling board, a shaping | molding ceiling, and a roof panel.

Explanation of symbols

10 Roof panel (plate material)
12 Fasteners 14 Ceiling board (plate material)
16 Grommets (legs, buttocks)
18 pins (shaft body, fastener)
24 Retaining part 28 Constricted part 30 Constricted part 32 Recessed part ( second recessed part)
34 Recessed part ( first recessed part)
36 Inclined surface ( second inclined surface)
38 Inclined surface ( first inclined surface)
40 buttock (fastener)
48 legs 50 leg pieces ( second leg, leg)
50A Protrusion ( second protrusion)
52 Leg pieces ( first leg, leg)
52A Protrusion ( first protrusion)
54 Molded ceiling (plate material)
56 Board material

Claims (5)

Formed on the roof panel, the molded ceiling, and the ceiling plate extending from the collar, the flange contacting the ceiling panel superimposed on the roof panel via the ceiling panel superimposed on the roof panel or the molded ceiling A plurality of legs that are inserted into the mounting holes, and a shaft body that is inserted into the inside of the legs from the through-hole formed in the flange, and that spreads the legs and presses against the hole walls of the mounting holes. In a fastener with
The leg portion is provided with a first protrusion portion provided on the inner side of the distal end portion, and a second protrusion portion is provided on the flange portion side while changing the axial position of the first protrusion portion. And a second leg,
A first recess that is formed on the shaft body and that the first protrusion locks in a state where the first leg piece is spread outward ;
A second recess that is formed on the shaft body and is engaged with the second protrusion in a state in which the second leg piece is pushed outward than the first leg piece ;
A fastener characterized by comprising:   2. The constricted portion is provided on the shaft body, wherein the first protrusion and the second protrusion are engaged with each other, and the first leg and the second leg are reduced in diameter. The described fasteners.   3. The fastener according to claim 1, wherein a stopper portion is provided between the first leg portion and the second leg portion at a distal end portion of the shaft body.   The fastener according to any one of claims 1 to 3, wherein at least a plurality of the first leg portions are a plurality of the first leg portions and the second leg portions. Wherein the first protrusion is engaged in the first recess, between the second protrusion is the and the first leg portion further said shaft body from locked state to said second concave second leg When pushed into the fastener according to any one of claims 2 4, wherein the first protrusion and the second protrusion and wherein the engaging said constricted portion.

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