JP2006161820A - Push rivet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a push rivet used in assembly of a mail box and a box for home delivery service whose inside side of a case body is frequently used in assembly of, in particular, the case body to prevent danger for catching mail when taking out the mail and scratching the fingers by improving a shape of a pointed end part in a sleeve tip part formed to fix plate members mutually. <P>SOLUTION: This push rivet has a rivet head part 9 having a screw head shape, a rivet shaft 15, and a shaft tip part 16 having smaller diameter than diameter of the rivet shaft 15. A rivet fitting recessed part 10 is provided in a sleeve head part 8 in a sleeve 3 in which the rivet shaft 15 is fitted and inserted. A sleeve central hole 11 in which the rivet shaft 15 is fitted and inserted from the center of the rivet fitting recessed part 10 is provided by passing through it. A protruding part 12 having such shape that reduces inside diameter of the sleeve central hole 11 is provided in an intermediate part of the sleeve central hole 11. Four vertically cut and divided channels 14a, 14b, 14c, 14d in a crisscross shape opposing centered on the sleeve central hole 11 are provided in the intermediate part of the sleeve central hole 11. When the rivet 2 is pressed and the rivet head part 9 is fitted into the rivet fitting recessed part 10 provided in the sleeve head part 8, the rivet shaft 15 passes through the sleeve protruding part 12 to swell an intermediate part of the sleeve and tighten and fix the plate members mutually. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an improvement of a push rivet for easily fastening and fixing a plate material and a plate material.

  The present invention particularly pierces two or more plates to be fixedly penetrated through a sleeve insertion hole, inserts a sleeve made of a synthetic resin material into the sleeve insertion hole, and attaches a steel rivet from the sleeve head. The present invention relates to a push rivet using a steel rivet which is pressed and inserted with a fingertip and can easily fix the plate material from one side.

  The present invention cuts or bends a plate material such as stainless steel or aluminum having a plate thickness of about 1.0 mm to 3.0 mm to produce a molded part, and fastens and fixes the molded part to form a casing or the like Push rivets for assembling the product, and the shape of the case is made of steel pins suitable for making products that are frequently used on the inside of the case, that is, mail boxes, courier boxes, newspaper trays, etc. The push rivet used is provided.

Conventional nylon push rivets are variously improved from the wedge type, and have become a shape that is currently in great use. An example is disclosed in Japanese Utility Model Publication No. 47-36763.
Moreover, what is shown in FIG. 5 as a nylon push rivet conventionally used as an off-the-shelf product is known.

  In the conventional example of FIG. 5, FIG. 5 (a) shows a part diagram showing the overall shape of a nylon push rivet, and FIGS. 5 (b) and 5 (c) are explanatory views showing the attached state.

  In FIG. 5, reference numeral 50 denotes a conventional nylon push rivet, and the nylon rivet 50 includes a rivet 51 and a sleeve 52. Reference numerals 53 and 54 denote plates that are fastened and fixed to each other. Reference numeral 55 denotes a rivet mounting hole that is formed between and penetrates the plates 53 and 54. The sleeve 52 of the nylon push rivet 50 is inserted into the rivet mounting hole 55. As shown in FIG. 5B, the sleeve 52 penetrates through two plate members 53 and 54, and a tip end portion 56 projects.

  Thus, in the conventional example, the sleeve 52 is formed with a sleeve central hole 58 having an appropriate depth from a sleeve head 57 formed in an appropriate shape to form a cylinder protrusion 59. Four vertical slits 60a, 60b, 60c, 60d are provided slightly deeper than the protrusion 59, and stop pieces 61a, 61b, 61c, 61d are formed.

  The rivet 51 to be inserted into the sleeve center hole 58 includes a rivet shaft 62, and an enlarged head 63 is provided at the upper end of the rivet shaft 62 so that the diameter thereof is larger than that of the sleeve head 57. The sleeve head 57 is covered with a concave fitting portion 64 provided below the enlarged head 63 of the rivet shaft 62.

  As shown in FIG. 5 (b), the conventional rivet is used by setting the nylon push rivet 50 in the rivet mounting hole 55, inserting the rivet 51 into the sleeve center hole 58, and pushing the enlarged head 63 with a finger. When the rivet 51 is sufficiently inserted as shown in FIG. 5 (c), the stop pieces 61a, 61b, 61c, 61d formed by the longitudinal dividing grooves 60a, 60b, 60c, 60d are pushed and bent at the tip of the rivet shaft 62. The plate members 53 and 54 are fixed in a state where the two plate members 53 and 54 are sandwiched between the enlarged and deformed stop pieces 61a, 61b, 61c and 61d and the sleeve head portion 57.

  Thus, the nylon push rivet of the conventional example can easily fix the plate materials to each other, but the push rivet is fastened between the plate materials by expanding and deforming so that the tip of the rivet is sharply pointed. For this reason, there is a risk that the pointed end of the tip may catch the postal matter when taking out the postal matter or the like, or scratch the fingers. It was unsuitable for use in assembling frequently used mailboxes and courier boxes.

  In addition, the conventional nylon push rivet has no shear strength because both the rivet and sleeve are made of nylon, which is a major drawback especially when thin plate materials are fixed to each other, and the range of use of the nylon push rivet is limited. I'm making things.

Furthermore, conventional nylon push rivets open and expand the end of the rivet to fasten and fix the plate materials, so a spacer or washer is required for fixing the thin plate materials. The work process was complicated.
Japanese Utility Model Publication No. 47-36763

  The problem to be solved by the present invention is to use a push rivet to assemble a housing and the like, and the housing is frequently used on the inner side, for example, for assembling a mail box or a courier box. In order to fasten and fix the plate materials, the shape of the tip of the sleeve tip formed on the inside of the housing is improved, and when the mail is taken out, the mail is caught, This prevents the risk of scratching.

  Further, the present invention not only provides a push rivet that is excellent in design by making the rivet to be inserted into the sleeve made of steel such as stainless steel, but also increases the shear strength by using the steel rivet. .

  Furthermore, in the present invention, the structure in which the intermediate portion of the sleeve is expanded allows the plate materials to be securely fixed even in the fixing operation of thin plate thicknesses, and this operation does not require a spacer or a washer. This is to provide a push rivet that can be efficiently operated.

  According to the present invention, two or a plurality of plate members to be fixed are penetrated through a sleeve insertion hole, a sleeve made of a synthetic resin material is inserted into the sleeve insertion hole, and a rivet is pressed from the sleeve head with a fingertip. In the push rivet in which the plate members are fixed to each other by inserting and inserting, the push rivet has a screw-head-shaped rivet head and a rivet shaft, and a shaft tip having a diameter smaller than that of the rivet shaft. The sleeve into which the rivet is inserted is provided with the rivet fitting recess in the head, and is provided through the sleeve center hole into which the rivet shaft is inserted from the center of the rivet fitting recess, and the middle part of the sleeve center hole. Is provided with a projecting portion having a narrowed inner diameter of the sleeve center hole, and at the intermediate portion of the sleeve center hole, four longitudinally divided slits are formed so as to face the center of the sleeve. The rivet shaft passes through the sleeve projecting portion in a state where the rivet is pressed and the rivet head is fitted in the rivet fitting recess provided in the sleeve head. The present invention provides a push rivet characterized by inflating an intermediate portion of a sleeve and fastening and fixing the plate members together.

  Further, in the present invention, since the tip of the sleeve has a cylindrical shape and is not provided with a vertical slit groove, the tip of the sleeve does not open or expand, and the push rivet fits in a rounded shape. Is to provide.

  In the present invention, the rivet is a push rivet made of steel such as stainless steel or a screwed rivet.

  Further, in the present invention, the four vertical slits formed in the middle portion of the sleeve center hole are two vertical slits that are formed in a single letter shape so as to face the center of the sleeve. Or a push rivet provided with three longitudinally split grooves provided radially around the center hole of the sleeve.

  Further, in the present invention, a plus or minus screwdriver engagement groove is formed on the head of the rivet, and a male screw is screwed on the rivet shaft, and a screwdriver is engaged with the rivet head. When the rivet is screwed into the sleeve and the rivet is pressed and the rivet head is fitted into the rivet fitting recess provided in the sleeve head, the male threaded portion of the rivet shaft expands the sleeve projecting portion and the plate material Also provided is a screw rivet characterized in that they are fastened together and fixed.

  Thus, in the present invention, when the push rivet is used for assembling the casing, that is, the mail box or the courier box frequently used on the inner side of the casing, the push rivet fastens the plate members. By improving the shape of the pointed end of the sleeve tip that is formed to adhere, the risk of catching mail on the tip of the sleeve when picking up mail, etc. or scratching the fingers is prevented. We were able to.

  In addition, the present invention provides not only a push rivet with an excellent design by making the rivet to be inserted into the sleeve made of steel such as stainless steel, but also the steel rivet can increase the shear strength. It was.

  Furthermore, in the present invention, the structure in which the intermediate portion of the sleeve is expanded allows the plate materials to be securely fixed even in the fixing operation of thin plate thicknesses, and this operation does not require a spacer or a washer. We were able to provide push rivets that can be processed efficiently.

  According to the present invention, two or a plurality of plate members to be fixed are penetrated through a sleeve insertion hole, a sleeve made of a synthetic resin material is inserted into the sleeve insertion hole, and a rivet is pressed from the sleeve head with a fingertip. In the push rivet in which the plate members are fixed to each other by inserting and inserting, the push rivet has a screw-head-shaped rivet head and a rivet shaft, and a shaft tip having a diameter smaller than that of the rivet shaft. The sleeve into which the rivet is inserted is provided with the rivet fitting recess in the head, and is provided through the sleeve center hole into which the rivet shaft is inserted from the center of the rivet fitting recess, and the middle part of the sleeve center hole. Is provided with a projecting portion having a narrowed inner diameter of the sleeve center hole, and at the intermediate portion of the sleeve center hole, four longitudinally divided slits are formed so as to face the center of the sleeve. The rivet shaft passes through the sleeve projecting portion in a state where the rivet is pressed and the rivet head is fitted in the rivet fitting recess provided in the sleeve head. It is a push rivet whose main point is to inflate the middle part of the sleeve and fasten and fix the plate members together.

  In the present invention, the sleeve tip is a push rivet having a round shape because the sleeve tip is cylindrical and does not have a vertical slit, so the sleeve tip does not open or expand. Is preferred.

  In the present invention, the rivet is preferably a push rivet made of steel such as stainless steel or a screwed rivet.

  Further, in the present invention, the four vertical slits formed in the middle portion of the sleeve center hole are two vertical slits that are formed in a single letter shape so as to face the center of the sleeve. In addition, it is preferable to provide three longitudinally split grooves provided radially around the center hole of the sleeve.

  Furthermore, a plus or minus screwdriver engaging groove is formed on the head of the rivet according to the present invention, and a male screw is screwed on the rivet shaft. When the rivet is pressed by being screwed into the sleeve and the rivet head is fitted into the rivet fitting recess provided in the sleeve head, the male threaded portion of the rivet shaft expands the sleeve projecting portion and the plate members are It is also preferable that the screwed rivet is fastened and fixed.

  FIG. 1 is a component diagram for explaining a first embodiment of the present invention, and FIGS. 2 (a) and 2 (b) are explanatory views showing the mounting state thereof.

  1 and 2, reference numeral 1 denotes a push rivet according to the present invention, and the push rivet includes a rivet 2 and a sleeve 3. Reference numerals 4 and 5 denote plate materials that are fastened and fixed to each other. Reference numeral 6 denotes a rivet mounting hole that is formed between and penetrates the plate materials 4 and 5. The sleeve 3 is inserted into the rivet mounting hole 6. As shown in FIG. 2A, the sleeve 3 penetrates through two plate members 4 and 5, and a tip portion 7 protrudes.

  The sleeve 3 is provided with a sleeve head 8 formed in an appropriate shape, and a rivet fitting recess 10 of the rivet head 9 is provided above the sleeve head 8. A sleeve center hole 11 is provided through the shaft core portion of the sleeve 3, and a protruding portion 12 having a shape in which the inner diameter of the sleeve center hole 11 is narrowed is provided at an intermediate portion of the sleeve center hole 11. Is provided.

  Further, four intermediate slits 14a, 14b, 14c, and 14d are formed in a cross shape in the middle portion 13 of the sleeve center hole 11 so as to face the sleeve center hole 11 in the center.

  Thus, the rivet 2 has a rivet shaft 15 and a shaft tip portion 16 having a diameter smaller than that of the rivet shaft 15 below the rivet head 9, and in the work preparation stage, as shown in FIG. Thus, the rivet shaft 15 is inserted into the sleeve center hole 11 of the sleeve 3.

FIG. 2 (b) advances the preparatory work of FIG. 2 (a), presses the rivet head 9 of the rivet 2, and the rivet head 9 is fitted into the rivet fitting recess 10 of the sleeve 3. In this state, the rivet shaft 15 passes through the protruding portion 12 of the sleeve center hole 11 to form an expansion portion 17 in the middle portion of the sleeve 3, and the plate material 4 is formed by the sleeve head portion 8 and the expansion portion 17. 5 is fastened and fixed.
In the first embodiment, the distal end portion 7 of the sleeve 3 is cylindrical and has no longitudinal slits 14a, 14b, 14c, 14d, so that the distal end portion 7 of the sleeve 3 expands in an open shape. Therefore, the push rivet having a round shape can be formed.

  Therefore, when the inner side of the casing is used for assembling a mail box or a courier box frequently used for assembling the casing or the like, the sleeve tip 7 formed to fasten and fix the plate members 4 and 5 together. Thus, it is possible to prevent the risk of catching mail pieces or scratching fingers with the tip 7 of the sleeve 3 when taking out mail pieces or the like.

  Further, in the first embodiment, the rivet 2 fitted into the sleeve 3 of the push rivet 1 is made of steel such as stainless steel, so that the rivet head 9 is processed into a mirror finish or the like so that the design is excellent. A push rivet can be provided, and by adopting the steel rivet, the shear strength of the entire rivet can be increased.

  Further, in the first embodiment, the four vertical slits 14a, 14b, 14c, and 14d formed in the middle portion of the sleeve center hole 11 are formed in a single letter shape facing the sleeve center hole 11 as a center. The same effect can be obtained also by providing two longitudinally split grooves or three vertically split grooves provided radially around the sleeve center hole 11.

  3 or 4 (a) and 4 (b) are for explaining the second embodiment. FIG. 3 is a component diagram, and FIGS. 4 (a) and 4 (b) are explanatory diagrams showing the mounting state. is there.

  3 and 4, 2 is a rivet, 3 is a sleeve, 4 is a plate material fastened and fixed to each other, 6 is a rivet mounting hole that is drilled between and penetrates the plate materials 4 and 5, The sleeve 3 is inserted into the rivet mounting hole 6, and the sleeve 3 penetrates through two plate members 4 and 5 as shown in FIG.

  The sleeve 3 is provided with a sleeve head 8 formed in an appropriate shape, and a rivet fitting recess 10 of the rivet head 9 is provided above the sleeve head 8. A sleeve center hole 11 is provided through the shaft core portion of the sleeve 3, and a protruding portion 12 having a shape in which the inner diameter of the sleeve center hole 11 is narrowed is provided at an intermediate portion of the sleeve center hole 11. Is provided.

  Further, four intermediate slits 14a, 14b, 14c, and 14d are formed in a cross shape in the middle portion 13 of the sleeve center hole 11 so as to face the sleeve center hole 11 in the center.

  Thus, a plus or minus driver engaging groove 18 is formed on the upper surface of the rivet head 9 of the rivet 2, and a rivet shaft 15 and a shaft having a smaller diameter than the rivet shaft 15 are provided below the rivet head 9. It has a tip 16. A male screw 19 is screwed on the rivet shaft 15, and the male screw 18 of the rivet shaft 15 is screwed into the soft resin sleeve center hole 11 as shown in FIG.

  4 (b) proceeds with the preparatory work of FIG. 4 (a), attaches a driver (not shown) to the driver engagement groove 18 of the rivet head 9, and screws the rivet 2 into the rivet. When the head 9 is fitted in the rivet fitting recess 10 of the sleeve 3, the rivet shaft 15 is screwed through the projecting portion 12 of the sleeve center hole 11, and the expansion portion is inserted in the middle portion of the sleeve 3. 17 is formed, and the plate members 4 and 5 are fastened and fixed by the sleeve head portion 8 and the expanding portion 17.

  Thus, the second embodiment can provide a screwed rivet having a considerably larger diameter than the push rivet of the first embodiment in which the plates are pressed and fixed with a finger, and the screwed rivet is provided to the driver. Thus, it is possible to provide a threaded rivet with a wide range of use that can arbitrarily release the fixation of the plate material.

  The present invention provides a push rivet and a screw rivet configured as described above. In particular, the present invention is an assembly of a mail box or a courier box that is frequently used on the inner side of the housing, for example, assembling the housing. In order to fasten and fix the plate materials together, we have improved the pointed end shape of the sleeve tip, and expanded the range of use, which has great industrial utility value. There is.

It is a components figure explaining Example 1 of this invention. It is principal part sectional drawing explaining the operation | movement of Example 1 of this invention. It is component drawing explaining Example 2 of this invention. It is principal part sectional drawing explaining the operation | movement of Example 2 of this invention. FIG. 6 is a component diagram for explaining a conventional example and a cross-sectional view of a main part for explaining the operation of the conventional example.

Explanation of symbols

Reference Signs List 1 push rivet 2 rivet 3 sleeve 4, 5 plate 6 rivet mounting hole 7 tip 8 sleeve head 9 rivet head 10 rivet fitting recess 11 sleeve center hole 12 projecting portion 13 intermediate portions 14a, 14b, 14c, 14d Cutting groove 15 Rivet shaft 16 Shaft tip 17 Expansion portion 18 Driver engagement groove 19 Male thread 50 Nylon push rivet 51 Rivet 52 Sleeve 53, 54 Plate material 55 Rivet mounting hole 56 Tip 57 Sleeve head 58 Sleeve center hole 59 Torso 60a , 60b, 60c, 60d Vertical slits 61a, 61b, 61c, 61d Stop piece 62 Rivet shaft 63 Enlarged head

Claims (4)

Two or more plates to be fixed are drilled through a sleeve insertion hole, a sleeve made of a synthetic resin material is inserted into the sleeve insertion hole, and a rivet is pressed from the sleeve head with a fingertip and inserted into one side. From the push rivet for fixing the plate material from
The push rivet has a screw-head-shaped rivet head and a rivet shaft, and a shaft tip having a diameter smaller than that of the rivet shaft,
The sleeve into which the rivet shaft is inserted is provided with the rivet fitting recess in the head,
Provided through the sleeve center hole into which the rivet shaft is inserted from the center of the rivet fitting recess,
In the middle part of the sleeve center hole, a projecting portion having a narrowed inner diameter of the sleeve center hole is provided,
Further, the middle portion of the sleeve center hole has a configuration in which four vertical slits are formed in a cross shape so as to face the center of the sleeve center hole,
With the rivet pressed and the rivet head fitted in a rivet fitting recess provided in the sleeve head, the rivet shaft penetrates the sleeve projecting portion to expand the intermediate portion of the sleeve, and the plate members Fastening and fixing,
Push rivet characterized by. The rivet is made of steel such as stainless steel,
The push rivet according to claim 1. The four vertical slits drilled in the middle of the sleeve center hole are two vertical slits drilled in a single shape facing the sleeve center hole, or the sleeve center hole It is three vertical slits provided radially around
The push rivet according to claim 1. A rivet head according to any one of claims 1 to 3 is provided with a plus or minus screwdriver engaging groove, a rivet shaft is provided with a male screw, and the rivet head is provided with a screw. By engaging the screwdriver and screwing the rivet into the sleeve, the rivet is pressed and when the rivet head is fitted into the rivet fitting recess provided in the sleeve head, the male threaded portion of the rivet shaft is projected into the sleeve. Inflating the installation part and fastening and fixing the plate members together;
Threaded rivet characterized by.

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