JP4436266B2 - clip - Google Patents

Description

  The present invention relates to a clip composed of a female grommet and a male pin member, and more particularly to a type in which the grommet is penetrated on an axis.

  A clip 50 in FIG. 6 is disclosed in Patent Document 1, and includes a grommet 51 having a cylindrical leg portion 52 and a flange portion 53 protruding from the outer periphery of the upper end of the leg portion 52, a head portion 56, and a shaft portion 57. And a pin member 55 having The leg 52 is divided into a plurality of leg pieces 54 by vertical slits, and a claw part 54 a is formed at the protruding end of each leg piece 54. The shaft portion 57 has a main fastening portion 58 provided in a substantially middle peripheral portion and a temporary fastening portion 59 provided in a tip peripheral portion. The shaft portion 57 is pushed into the cylindrical hole of the leg portion 52 so that the claw portion 54a is From the temporarily fixed state engaged with the temporary fixing portion 59, it is engaged with the final fixing portion 58 as shown in FIG. That is, for example, when the plate member 60 is attached to the plate member 61 or when the plate members 60 and 61 are coupled to each other, the clip 50 is inserted into the attachment holes 60a and 61a in the temporarily fixed state, and the pin member 55 is pushed. The leg portion 52 is expanded via the shaft portion 57 that is pushed into the cylindrical hole of the leg portion 52 by the operation, and the plate members 60 and 61 are fastened between the flange portion 53 and the expanded portion of the leg portion 52. Hold it.

Since the above-described clip 50 is easily expanded and deformed by the shaft portion 57 in which the leg portion 52 is penetrated through the cylindrical hole, the fastening force in the use state can be increased as compared with the bag-type type leg portion. However, from the viewpoint of water tightness, the leg portion 52 has a cylindrical shape and is divided through a vertical slit, so that the leg portion 52 is disposed between the flange portion 53 and the plate member 60 and is moved from the lower surface of the flange portion 53 to the mounting hole side. The seal member 63 that prevents water from entering, and the seal member 64 that is attached to the upper outer periphery of the shaft portion 57 and prevents water from entering through the cylindrical hole of the leg portion 52 are required.
JP 2003-83313 A

  In the above-described clip structure, the two seal members 63 and 64 maintain the watertightness, so that the number of members increases, resulting in lack of handling and difficulty in cost reduction. As an improvement measure, the seal member 64 can be omitted if the legs are formed in a bag shape, but there is a problem that the fastening force in the use state cannot be increased as described above. Accordingly, the present invention is intended to ensure that watertightness can be reliably imparted by a single sealing member even when the grommet is a cylindrical leg, thereby reducing handling and cost while maintaining the fastening force. is there.

In order to achieve the above object, the following has been devised.
The invention of claim 1 specifies the form of FIGS. 1 to 3, a grommet having a substantially cylindrical leg and a flange projecting from the outer periphery of the upper end of the leg, and the head and the head In the state where the leg portion is inserted into the mounting hole between the plate members, the leg portion is expanded by pushing the shaft portion into the tube hole of the leg portion. In a clip that can be opened and fastened to each plate member between the flange portion and the expanded portion of the leg portion,
The head of the pin member has a substantially inverted dish shape, and is disposed so as to surround the outer periphery of the flange portion of the grommet, and has a sealing member larger than the outer diameter of the head of the pin member, and the leg portion The seal member is pressed and pressed against the corresponding surface of the plate member on the outer periphery of the head of the pin member in a state of being expanded through the shaft portion.
In addition, the invention of claim 2 specifies the form of FIG. 4, and includes a grommet having a substantially cylindrical leg and a flange projecting from the outer periphery of the upper end of the leg, a head and the head. It consists of a pin member having a shaft part provided below, and the leg part is expanded by pushing the shaft part into the tube hole of the leg part with the leg part inserted into the mounting hole between the plate members. And in the clip which can fasten each said plate member between the above-mentioned collar part and the expansion part of the above-mentioned leg part,
The head of the pin member has a substantially inverted dish shape, and is disposed so as to surround the outer periphery of the head of the pin member, and has a sealing member that is larger than the outer diameter of the collar portion of the grommet, and the leg portion The seal member is pressed and pressed against the corresponding surface of the plate member on the outer periphery of the head of the pin member in a state of being expanded through the shaft portion.

  In each of the above inventions, the grommet side leg portion has a cylindrical shape, and is expanded and deformed by pushing the pin member side shaft portion into the cylindrical hole of the leg portion in a state where the grommet side leg portion is inserted into the mounting hole between the plate members. This is common in that the plate members are sandwiched between the expanded portion and the flange portion. The seal member according to claim 1 is arranged so as to surround the outer periphery of the flange portion of the grommet as inferred from FIG. 1, and is located at a location for receiving the head portion of the pin member, and the leg portion is pushed into the shaft portion In the fastening state between the plate members expanded by the above, the head of the pin member is crushed to the corresponding surface side of the plate member and pressed, so that the water tightness between the collar and the plate member upper surface, the head and Ensures water tightness between the legs. On the other hand, the seal member of claim 2 is arranged so as to surround the outer periphery of the head portion of the pin member as inferred from FIG. 4, the grommet's collar is located inside, and the leg portion is the shaft portion. Since the plate members expanded by pressing are pressed and pressed against the corresponding surface side of the plate member at the head of the pin member, the water tightness between the collar and the plate member upper surface, the head To ensure the watertightness between the foot and the leg.

Each of the above invention, (A) constituting the front Symbol sealing member is formed integrally with the grommet or the pin member (claim 3), the head of (a) before Symbol pin member, said grommet A configuration in which a tool insertion recess or a neck portion to be gripped by a tool used when pulling out the shaft portion of the pin member from the leg portion is preferable (Claim 4 ).

-In each invention of Claim 1 and 2, even if it makes it the cylinder shape which is easy to increase the fastening force of board members as a leg part of a grommet, watertightness can be reliably provided with one sealing member, As a result, conventional clip Compared to the above, it is possible to realize handling and cost reduction while increasing the fastening force. Further, since the head portion of the pin member has a generally inverted dish shape, the seal member is easily pressed and deformed at the dish-shaped edge portion, thereby making it possible to more reliably obtain the water tightness due to the above-described seal member.
In the invention of claim 3 , the seal member is integrally formed by two-color molding on the collar part of the grommet and the head part of the pin member so that the manufacturing cost can be reduced and the parts management can be simplified.
In the invention of claim 4 , for example, the clip can be easily removed and reused if necessary.

  The best mode of the present invention will be described with reference to the drawings. In the following description, the first embodiment shown in FIGS. 1 to 3, the second embodiment shown in FIG. 4, the modification shown in FIG. 5A, and the modification shown in FIG.

(First embodiment) FIG. 1 shows a clip of the first embodiment together with a plate member, (a) is a schematic cross-sectional view in which grommets are set in mounting holes between plate members, and (b) is a schematic cross-section in which plate members are fastened together. FIG. FIG. 2 shows the appearance of the clip, (a) is an exploded configuration diagram, and (b) is a configuration diagram in which a pin member is inserted into the grommet. FIG. 3 shows the clip shown in FIG. 2B. FIG. 3A is a top view, FIG. 3B is a side view, and FIG. Here, the clip 1 of each form is used, for example, when attaching the plate member 60 to the plate member 61 as in the conventional product of FIG. 6, or when fastening a plurality of plate members in a superposed state. The basic structure includes a pin member 2 and a grommet 3 formed with a resin, and a seal member 4 excellent in elastic deformability.

  Among these, the pin member 2 is made of a thermoplastic resin such as an ABS resin which is an ethylene vinyl acetate copolymer, and has a head portion 20 and a shaft portion 23 provided below the head portion 20. The head 20 has a generally inverted dish shape. An engagement groove 21 for inserting a tool such as a screwdriver is provided in the center of the upper surface, and a cam projection 22 is provided on the lower surface. The shaft portion 23 protrudes from the center of the lower surface of the head portion. The base portion 24, the central shaft 25, the main locking engagement portion 26, the temporary fixing small diameter groove portion 27, and the distal end portion 28 are arranged in this order toward the distal end. It is arranged. The base 24 is formed larger in diameter than the central shaft 25. On the outer peripheral surface of the central shaft 25, four upper and lower ribs 29 are provided at positions that equally divide the periphery. The small-diameter groove portion 27 is partitioned by four vertical ribs 27a. The locking portion 26 is located at the lower end of the upper and lower ribs 29, and is formed as a step for main locking between the upper end surfaces of the vertical ribs 27a. The distal end portion 28 has a bowl shape and is formed so that its outer diameter increases from bottom to top.

  The grommet 3 is made of a thermoplastic resin such as polyacetal (POM) and has an elastic leg portion 30 and a flange portion 35. The leg portion 30 has a substantially cylindrical shape, and a flange portion 35 is integrally formed on the outer periphery of the upper end, and four leg pieces 32 are formed by four upper and lower slits 31 extending in the axial direction between the periphery and the like. It is divided into Each leg piece 32 is in a cylindrical hole and forms a claw portion 34 via a downward taper portion 33 on the inside of the tip, and a gap is provided between the claw portions 34. The flange portion 35 has a substantially L-shaped cross-section integrated with the outer periphery of the upper end of the leg portion 30, and an inclined groove 36 provided on the inner surface of the L-shaped horizontal portion so as to face each other, and the outer surface of the L-shaped vertical portion And a thin-walled receiving portion 37 projecting flush with the lower surface, and a thin-walled retaining portion 38 projecting from the upper edge on the outer surface of the L-shaped vertical portion. When the pin member 2 is rotated with respect to the grommet 3 from the fully fixed state of FIG. 1B through a tool inserted into the engagement groove 21, the protrusion 22 is located at a position lower than the inclination groove 36. It is possible to pull out from the cylindrical hole by being guided to a high position. The receiving portion 37 and the holding portion 38 are provided so as not to face each other, and can be easily held when the seal member 4 is disposed on the outer periphery of the flange portion 35. That is, the receiving portion 37 and the holding portion 38 are holding means that make it difficult for the sealing member 4 to come off from the flange portion 35 when the seal member 4 is disposed on the outer periphery of the flange portion 35. In this example, the lower receiving portion 37 is set wider than the upper holding portion 38.

  The sealing member 4 is a foamed material such as expanded polystyrene, and has a shape that is held on the outer periphery of the flange portion 35. In terms of material, it may be formed of rubber or soft resin material in addition to the foam. In terms of shape, the main body 40 has a substantially donut shape, and both the lower surface 41 and the upper surface 42 are substantially flat. The outer diameter dimension is set to be larger than that of the head 20, and the head 20 can be crushed from the upper surface 42 with an inverted dish-shaped peripheral edge. For example, as shown schematically in each of FIG. 1 and FIG. 2A, the sealing member 4 described above is formed by partially inserting the flange 35 into the inner diameter from above the flange 35. Is received by the receiving portion 37, and is assembled to the grommet 3 in a state where the hole edge portion of the upper surface 42 is pressed by the holding portion 38. Such assembling is simple and there is no risk of inadvertently regulating the elasticity of the seal member 4. In FIG. 1A, the seal member 4 is drawn in a state where the lower surface corresponding portion is pressed against the receiving portion 37 and deformed. However, the seal member 4 is placed on the receiving portion 37 when the seal member 4 is not pressed from above. It becomes the mode made.

(Operation) In the clip 1 described above, the pin member 2 inserts the shaft portion 23 into the cylindrical hole of the leg portion 30 with respect to the grommet 3 as shown in FIG. When engaged with the small groove portion 27 to be temporarily fixed, and further pushed in, each leg piece 32 is expanded as shown in FIG. 1B, and the tip claw portion 34 of the leg piece 32 is connected to the shaft portion side locking portion. By engaging with the 26 steps, the locked state is achieved. In the fixed state, the plate members 60 and 60 are sandwiched between the flange portion 35 and the widened portion of the leg portion 30 with the leg portion 30 inserted into the mounting holes 60a and 61a of the plate members 60 and 61. Thus, the plate member (for example, the plate member on the article side) 60 can be fixed to the plate member 61 such as a housing or a panel, or the plate members 60 and 61 can be fastened together.

  In this structure, the seal member 4 is strongly pressed from above on the outer periphery of the head 20 and is crushed on the plate member 60 by the pressing force in the above-described final stop state. That is, the seal member 4 is crushed to the upper surface side of the plate member 60 on the outer periphery of the head portion 20 of the pin member 2 as shown in FIG. Both the water tightness and the water tightness between the head 20 and the cylindrical hole of the leg 30 are reliably maintained. In this structure, the protrusion 22 is guided from the low position of the inclined groove 36 to the high position only by rotating from the fixed state through the tool inserted into the engagement groove 21 as described above, so that the claw portion 34 is provided. The pin member 2 can be easily pulled out from the grommet 3 by releasing the engagement of the locking portion 26 with respect to the pin.

(Second Mode) FIG. 4 shows a clip of the second mode corresponding to FIG. 4A is a schematic cross-sectional view in which grommets are set in the mounting holes between the plate members, and FIG. 4B is a schematic cross-sectional view in which the plate members are fastened. In this description, the same parts as those in the first embodiment are denoted by the same reference numerals, and only the changes are described in detail. In other words, in this embodiment, the seal member 5 is integrally provided on the outer periphery of the head 20 by two-color molding with a soft resin. The seal member 5 has a donut shape larger than the maximum outer diameter of the flange portion 35 (receiving portion 37) of the grommet 3 and is integrated so as to surround the outer peripheral edge of the head 20. That is, the outer diameter L1 of the seal member 5 is set to be larger than the maximum outer diameter T1 of the flange portion 35. For this reason, even in this structure, the seal member 5 is pressed on the outer periphery of the head 20 and is pressed against the upper surface of the plate member 60 with elastic deformation in the final stop state of FIG. 4B. Both the watertightness between the flange 35 and the upper surface of the plate member 30 and the watertightness between the head 20 and the cylindrical hole of the leg 30 can be reliably maintained. However, technically, the seal member 5 is provided on the head portion 20 of the pin member 2 by two-color molding. However, the seal member 5 is formed independently and attached to the head portion 20 as in the first embodiment. May be.

(Modification) The modification of FIG. 5 (a) has a configuration in which the seal member 4 of the first embodiment is provided on the outer periphery of the collar portion 35 by two-color molding similarly to FIG. For this reason, in this structure, manufacturing costs can be reduced and component management can be simplified by integrally forming the seal member 4A by two-color molding. On the other hand, the modified example of FIG. 5B shows an example in which a substantially T-shaped neck portion 6 is provided on the head 20 of the pin member 2 in place of the tool insertion engagement groove 21 of the first embodiment. ing. For this reason, in this structure, when pulling out the shaft portion 23 of the pin member 2 from the leg portion 30 of the grommet 3, the clip 1 is required by releasing the above-mentioned main stop by grasping and rotating the neck portion 6 with a dedicated tool. Can be removed and reused easily. Thus, the clip 1 of the present invention only needs to be provided with the technical elements specified in claims 1 and 2, and the details can be variously changed as necessary.

It is a schematic cross section which shows the clip of a 1st form in the state before and behind use. It is the external view which inserted the exploded structure figure of the said clip, and the pin member in the grommet. It is the upper surface in the temporary assembly | attachment state, a side surface, and a bottom view. It is a schematic cross section which shows the clip of a 2nd form corresponding to FIG. It is a schematic cross section which shows the modification of each said clip. It is explanatory drawing which shows the conventional clip.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Clip 2 ... Pin member (20 is a head, 23 is a shaft part)
3 ... Grommet (30 for legs, 35 for buttocks)
4, 4A, 5 ... Seal member 6 ... Neck portion 21 ... Engagement groove 60, 61 ... Plate member (60a, 61a are mounting holes)

Claims (4)

A grommet having a substantially cylindrical leg and a collar projecting from the outer periphery of the upper end of the leg, and a pin member having a head and a shaft provided below the head, the leg being a plate member In a state of being inserted into the mounting holes between each other, the leg portion is expanded by pushing the shaft portion into the tube hole of the leg portion, and each of the portions between the flange portion and the enlarged portion of the leg portion is expanded. In the clip that can fasten the plate member,
While the head of the pin member has a generally inverted dish shape,
The seal member is disposed so as to surround the outer periphery of the collar portion of the grommet, has a seal member larger than the outer diameter of the head of the pin member, and the seal member is in a state where the leg portion is expanded through the shaft portion. A clip, wherein the clip is pressed against a corresponding surface of the plate member on the outer periphery of the head of the pin member. A grommet having a substantially cylindrical leg and a collar projecting from the outer periphery of the upper end of the leg, and a pin member having a head and a shaft provided below the head, the leg being a plate member In a state of being inserted into the mounting holes between each other, the leg portion is expanded by pushing the shaft portion into the tube hole of the leg portion, and each of the portions between the flange portion and the expanded portion of the leg portion is expanded. In the clip that can fasten the plate member,
While the head of the pin member has a generally inverted dish shape,
The seal member is disposed so as to surround the outer periphery of the head portion of the pin member, has a seal member larger than the outer diameter of the collar portion of the grommet, and the seal member is in a state where the leg portion is expanded through the shaft portion. A clip, wherein the clip is pressed against a corresponding surface of the plate member on the outer periphery of the head of the pin member.  The clip according to claim 1 or 2, wherein the seal member is formed integrally with the grommet or the pin member.  3. The clip according to claim 1, wherein the head of the pin member has a tool insertion recess or a neck portion gripped by a tool used when the shaft portion of the pin member is pulled out from a leg portion of the grommet. A clip characterized by being provided.

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