JP3051931U - Connection structure of multiple fastening members - Google Patents

Abstract

(57) Abstract: A joint of a plurality of fastening members capable of temporarily fixing one fastening member and the other fastening member integrally and performing free rotation and attachment / detachment operation of the other fastening member. Provide structure. One end of a holding member is locked to one fastening member, and the other end of the holding member is projected to one side of one fastening member to form a support. After passing the outer peripheral portion of the body 8 through the through hole 4 of the other fastening member 2, the outer end of the support body 8 is protruded at least outward from the inner diameter of the through hole 4 to provide a stopper 9.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a coupling structure of a plurality of fastening members used for assembling or connecting articles and a method thereof.

[0002]

[Prior art]

 When tightening mounting members such as articles using a large number of bolts and nuts, it is common to fasten these bolts and nuts with spring washers or flat washers interposed between them, thereby preventing loosening or loosening. A stable fastening effect can be obtained by enlarging the seat surface.

[0003] In order to improve the fastening work and the parts management, there is known a technique in which these nuts or bolts, spring washers and flat washers are temporarily and integrally fixed in advance.

For example, as shown in FIG. 9A, a projection 56 is provided on the seat surface side of a nut 54, and after attaching the flat washer 55 to the seat surface of the nut 54, the projection 56 is swaged to the flat washer 55. It was integrated by attaching.

However, when fastening is performed using this nut with a washer, the swaged portion of the projection 56 hits the surface of the mounting member, and complete fastening cannot be performed.

[0006] Furthermore, it is necessary to form a large hole for the bolt, and a special process such as molding or caulking of the projection is required, which increases the cost.

[0007] Once the nut and the washer are connected, they cannot be easily separated from each other. When the washer is replaced due to a change in fastening or the like, this operation cannot be performed at all. You have to prepare a lot of goods.

As a means for solving the above-mentioned drawback, as shown in FIG. 9B, a heat-shrinkable film 52 is passed through a bolt 50 through a spring washer 51 and an outer peripheral portion of the head 53 of the bolt 50 and the spring washer 51 is formed. 9 (c), the spring washer 51 and the flat washer 55 are superimposed on the bearing surface side of the nut 54, as shown in FIG. In addition, a technology is provided on the market in which a heat-shrinkable film 52 is placed over these outer peripheral portions and integrated using the heat-shrinking force of the film 52.

However, this film is fixed to the outer peripheral portion of the spring washer 51 and the flat washer 55 and the seating surface so as to be wrapped by the film 52, so that the film wound on the seating surface of the spring washer 51 or the flat washer 55. Is sandwiched between the mounting parts and cannot be easily removed even if you intend to peel it off.

In particular, at the time of fastening, the nut 54 rotates while the film 52 is in close contact with the seating surface, so that the film 52 is wrinkled, the appearance is poor, and the commercial value is reduced.

The spring washer 51 or the flat washer 55 directly abuts against the seat surface of the head 53 of the nut 54 or the bolt 50, and the seat surface of the spring washer 51 or the flat washer 55 is interposed via the film 52. Since the nut is in contact with the mounting member surface, the spring washer 51 or the flat washer 55 rotates with the rotation of the nut 54 or the bolt 50, and the mounting member surface is scratched.

In particular, since the nut 54 or the bolt 50 and the spring washer 51 and the flat washer 55 are once covered with the heat-shrinkable film 52, the two can be separated unless the film 52 is broken. However, the spring washer 51 and the flat washer 55 cannot be replaced or changed, or both cannot be attached or detached after fastening. And other various problems.

[0013]

[Problems to be solved by the invention]

 The present invention has been made to solve the above-described problem. One end of a holding member is locked to one fastening member, and the other end of the holding member is projected to one side of the one fastening member. After passing through the through hole of the other fastening member through the outer peripheral portion of the support, the outer end of the support is projected at least outward from the inner diameter of the through hole and stopped. By providing the body, it is possible to perform an integral temporary fixing of one and the other fastening members, and to provide a coupling structure of a plurality of fastening members that can freely rotate and detachably operate the other fastening member. It is intended to be.

[0014]

[Means for Solving the Problems]

 Means of the present invention for achieving the above-mentioned object are as follows: The coupling structure of the plurality of fastening members according to the first example is such that one fastening member and the other fastening member having a through hole of a predetermined diameter are temporarily fixed by a holding member. A holding structure in which one end of the holding member is locked to the one fastening member, and the other end of the holding member protrudes to one side of the one fastening member. After passing through the through hole of the other fastening member through the outer peripheral portion of the support, the outer end of the support is extended at least outward from the inner diameter of the through hole to provide a stopper.

[0015] Furthermore, in the connection structure of a plurality of fastening members according to the second example, one fastening member having a female screw or a male screw and the other fastening member having a through hole of a predetermined diameter are temporarily fixed by a holding member. In a coupling structure of a plurality of fastening members, one end of the holding member is locked to an outer periphery of the one fastening member, and the other end of the holding member is projected toward a seat surface side of the one fastening member to support the support member. After passing through the through hole of the other fastening member through the outer peripheral portion of the support, the outer end of the support is extended at least outward from the inner diameter of the through hole to form the stopper. And a projection that cuts the holding member on the seat surface of the one-side fastening member.

Further, the coupling structure of the plurality of fastening members according to the third example includes a plurality of fastening members for temporarily fixing one fastening member having a female thread and the other fastening member having a through hole of a predetermined diameter by a holding member. The one end portion of the holding member is locked to the outer periphery of the one fastening member, and the other end portion of the holding member protrudes toward the seat surface side of the one fastening member to form a cylindrical support. After passing through the through hole of the other fastening member on the outer peripheral portion of the support, the outer end of the support is extended at least outward from the inner diameter of the through hole to provide a stopper. The support has an inner diameter formed to be smaller than an outer diameter of the external thread of the male screw body to be inserted at the time of fastening.

[0017]

【Example】

 Next, an embodiment of a coupling structure of a plurality of fastening members according to the present invention will be described with reference to the drawings.

In FIG. 1 to FIG. 5 and FIG. 7 to FIG. 8, reference symbol A denotes a connection structure of a plurality of fastening members, which is used for assembling or connecting articles b such as attachment members. The holding member 3 temporarily fixes the one fastening member 1 and the other fastening member 2 having the through hole 4 having a predetermined diameter, which are basically constituted by the member 1, the other fastening member 2, and the holding member 3.

The one-side fastening member 1 is, for example, a nut as shown in FIGS. 1 (a), (b), (c), (d), and (e). 1f, as shown in FIG. 1 (f), various male threads 1b such as bolts, and as shown in FIGS. 1 (g) and 1 (h), various washers and packings. A flat material 1c such as a panel, or a coil spring 1d as shown in FIG. 4B is used for assembling or connecting an article b such as a mounting member. Any fastening member can be used as long as it can be used.

Further, for example, as shown in FIGS. 1A and 1B, the other fastening member 2 is, for example, a spring washer 2a, or a spring washer 2a or 1f or 2f as shown in FIGS. ), (H), flat spring washer 2c, as shown in FIG. 1 (c), disc spring washer 2c, and as shown in FIGS. 1 (e), (g), plate material or article b. As shown in FIG. 4 (c), a member 2d such as a constituent material or the like, or a round or square pipe or the like, and a coil spring 2e or the like is used as shown in FIG. The member 2 is configured as a single item as shown in FIG. 1A or a combination of a plurality of items as shown in FIG. 1B.

A through hole 4 through which a male screw body 5 having a male screw 5a such as a bolt is inserted is formed, and this through hole 4 has an elliptical shape, a long hole shape, a round shape other than a circular shape. Any shape, such as a polygonal shape, may be used, and any fastening member may be employed as long as it is used for assembling or connecting articles b such as mounting members.

The above-mentioned holding member 3 is made of a synthetic resin material having a large shrinkage in the centripetal direction and having a large shrinkage in a centripetal direction, and is formed to a thin thickness of a predetermined thickness. As shown in FIG. 4 (a), if necessary, perforations 12, 13 are provided in one or both of the axial direction and the circumferential direction, and a portion which is in close contact with the outer periphery of the fastening member 1. May be easily broken, and a knob 17 may be attached to the one end 7 in some cases.

It is to be noted that, when the holding member 3 is wrapped, it prevents rust of one of the fastening members 1 and the like, and furthermore, a colorless and transparent one is easy to use, but of course it may be colored. Therefore, the position of the one-sided fastening member 1 can be confirmed and a decorative effect can be exhibited.

The coupling structure A of the plurality of fastening members of the first embodiment locks one end 7 of the holding member 3 to one fastening member 1 and fastens the other end of the holding member 3 to one end. A support 8 is formed by projecting from one side of the member 1, and after passing through the through hole 4 of the other fastening member 2 on the outer peripheral portion of the support 8, the outer end of the support 8 is A stopper 9 is provided outside of the inner diameter of 4, that is, in the diameter direction.

On the other hand, when the holding member 3 is attached to the fastening member 1, as shown in FIG. 2A, the cylindrical film 3 a having a larger diameter than the outer peripheral portion of the one fastening member 1 is formed. When it is put on the fastening member 1 and heated from the outside by a conventional hot air blowing means (not shown), as shown in FIG. Is locked to a position where it prevents movement in the axial direction. For example, when the one fastening member 1 is a nut, it is locked to the other side surface of the seat surface.

On one side of the fastening member 1, a support 8 is formed of the tubular film 3a, and is formed when the thermal contraction limit of the tubular film 3a is reached. That is, the cylindrical film 3a comes into close contact with the seating surface, and the other end has a cylindrical shape with a predetermined diameter. At this time, as shown in FIG. 2 (c), the jig 25 may be passed through the female screw 1s or up to the vicinity of the female screw 1s to thermally shrink the tubular film 3a. In addition, the inner diameter can be made constant, the molding accuracy in the axial direction can be further improved, and there is no distortion or deformation.

The support member 8 has at least a diameter smaller than the inner diameter of the through hole 4 of the other fastening member 2 and, when the fastening member 1 is a nut, has a diameter larger than the root diameter of the internal thread 1 s. However, as shown in FIG. 3A, the nut 1 may be formed so as to have a dimension p smaller than the root diameter of the internal thread 1s of the nut 1. In this case, as shown in FIG. As described above, when the mounting member 10 is fastened using the nut 1 and the bolt 5, the inner peripheral surface of the support body 8 comes into close contact with the male screw 5a surface, and the nut 1 and the bolt 5 return ( (Looseness) Demonstrates the stopping action.

Further, when the support 8 is screwed into the external thread 5a at the time of fastening, the support 8 is placed at the start thereof and the support 8 is fitted into the external thread 5a and temporarily fixed. Therefore, the connecting structure A is not dropped.

In the formation of the stopper 9, any means may be used as long as it protrudes outward from the inner diameter of the through hole 4 and maintains the protruding shape (does not return or collapse). For example, as shown in FIG. 2 (d), a conical rod-shaped jig 11 having a diameter larger than the inner diameter of the support 8 is inserted into the support 8 and hot air blowing means (not shown). (3) plastic deformation (hardening) by heating from the outside, or plastic deformation by inserting the conical rod-shaped jig 11 heated to a predetermined temperature in advance into the support 8.

Further, in forming the stopper 9, as shown in FIG. 2 (e), a jig 26 is inserted from one of the fastening members 1, and the distal end thereof is set in the middle of the support 8. When it is thermally deformed by the hot air blowing means in the state where it is located at the position, the edge is spread outward by the hot wind supplied to the inside of the support 8, and the stopper 9 is formed.

The stop body 9 does not necessarily have to be in close contact with the seating surface of the other fastening member 2, and the other fastening member 2 may have a holding form with a margin enough to allow some play. .

Accordingly, since the one fastening member 1 and the other fastening member 2 are connected to each other with a predetermined gap formed therebetween via the holding member 3, the coupling structure A of the plurality of fastening members is used. When the attachment member 10 is fastened, the two members 1 and 2 do not rotate together, so that the other fastening member 2 is not scratched on the surface of the attachment member 10.

Further, by rotating only one of the fastening members 1 without causing the corotation, the holding member 3 attached to the outer periphery of the one of the fastening members 1 is cut apart, and it is confirmed that the fastening has been performed. Done.

Further, in the coupling structure A of the plurality of fastening members, since the holding member 3 is made of a thin synthetic resin film, the one fastening member 1 and the other fastening member 2 are separated from each other. 2 can be easily released by pulling it in the axial direction. Even after the stopper 9 has been formed, it is inserted into the through hole 4 of the other fastening member 2 and integrated again. If the insertion is difficult, it can be performed relatively smoothly if it is heated while using hot air blowing means or the like.

As shown in FIG. 8 (b), when a double-sided nut is adopted for the nut 1 a, which is a fastening member, the coupling structure A in this example has a seating surface when the mounting member 10 is fastened. Since the holding member 3 is hardly torn off at the side, the detachment of the holding member 3 itself is prevented, and the holding member due to separation does not become dust.

Next, a second example of the coupling structure A of the plurality of fastening members according to the embodiment of the present invention will be described.

In this example, a coupling structure A of a plurality of fastening members for temporarily fixing the one fastening member 1 having a female screw or a male screw and the other fastening member 2 having a through hole 4 having a predetermined diameter by the holding member 3. In this case, one end 7 of the holding member 3 is locked to the outer periphery of the one fastening member 1, and the other end of the holding member 3 is protruded toward the seat surface side of the one fastening member 1 to form the support body 8. After passing the outer periphery of the support 8 through the through hole 4 of the other fastening member 2, the outer end of the support 8 protrudes outward at least from the inner diameter of the through hole 4, and a stopper 9 is provided. On the other hand, a projection 16 is provided on the seating surface of the fastening member 1 for cutting the holding member 3.

That is, the connecting structure A of the first embodiment described above is provided with a protruding body 16. For example, the nut 1 a shown in FIG. By forming a protrusion 16 made of a blade or a burr at the time of forming each fastening member on the seating surface 20 of the bolt 1a shown in (b), the holding member 3 is cut by the protrusion 16 at the time of fastening. Then, it can be confirmed that the close contact of the holding member 3 with the fastening member 1 is released, or that the holding member 3 is detached from the fastening member 1 and fastened.

As shown in FIG. 6A, the protrusions 16 are provided on the seating surface 20 at a plurality of locations or on the entire circumference thereof. Formed by

Further, as shown in FIG. 6B, the projection 16 may be formed in an acute blade shape forming a predetermined angle θ, for example, the angle is about 20 to 40 °. Mold into

Further, as shown in FIG. 6B, the projecting body 16 spreads outward due to the tightening force at the time of fastening, so that the result can be visually confirmed, and the management of the tightening torque can be performed. I can do it.

In particular, as shown in FIG. 6C, the fastening using the coupling structure A is performed by cutting the holding member 3 in the vicinity of the seating surface of the fastening member 1 while being a nut by the projection 16. The one-side fastening member 1 can be pulled out (in the axial direction) of the one-side fastening member 1. If the one-side fastening member 1 is tightened by a socket-type fastening tool (not shown), the one-side fastening member 1 can be accommodated in the socket. It can be removed together when it is pulled out, making it easier to clean up.

The coupling structure A of the plurality of fastening members according to the embodiment of the present invention is configured such that the locking position of the one end 7 of the holding member 3 with respect to the fastening member 1 or the mode thereof can be set arbitrarily. As shown in d), when the nut 1a with the flange is used as the fastening member 1, it can be applied to the flange portion 18 thereof.

As shown in FIG. 1 (e), the holding member 3 engages with the other side of the support body 8 formed at the other end, in which the external thread 5 a of the external thread body 5 engages. The portion 19 is formed in a cylindrical shape by the heat shrinkage action of the hot air supply means or the like, and has an inner diameter smaller than at least the outer diameter of the external thread 5a.

As a result, as shown in FIG. 7, when the mounting member 10 is fastened, the locking portion 19 comes into close contact with the external thread 5 a of the male screw body 5 to exert a double nut effect, while the fastening members 1 and The loosening of the male screw body 5 is performed.

In the coupling structure A of the first and second embodiments, an incomplete thread portion extending to the female thread 1s or a female thread 1s is formed on the seat surface side of the nut 1a as one of the fastening members. As shown in FIG. 8A, if a concave portion 1r such as a recess is provided, one end 7 of the holding member 3 can be locked to the incomplete screw 1r.

In this case, a heat shrinkage action by hot air supply means or the like may be applied from the upper portion opposite to the seating surface.

[0048]

[Effect of the invention]

 The coupling structure of the plurality of fastening members of the present invention configured as described above has a structure in which one of the fastening members is supported by the support of the holding member attached to one of the fastening members and the other of the fastening members is supported in the through hole. Temporary fixing, ie, integration, can be performed easily and reliably.

Further, the holding member does not interfere with the fastening, and the other fastening member can move in the axial direction and the circumferential direction, and does not rotate together with the one fastening member at the time of fastening. Does not damage the mounting member to be fastened.

By removing the other fastening member from the support of the holding member, the other fastening member can be replaced as desired.

On the other hand, by providing a projection that cuts into the holding member on the seating surface of the fastening member, the holding member attached to the outer periphery of the one fastening member is separated or separated during fastening. Confirmation of the fastening can be made by visual observation from the outside, so that it is possible to prevent forgetting to fasten the fastening member.

In the method for connecting a plurality of fastening members according to the present invention, the holding member is cut by the rotational movement by fastening near the seat surface of the fastening member, which is a nut by the projection. The one can be pulled out of the one-side fastening member, so that the presence or absence of the fastening can be visually checked and the holding member can be easily disassembled. And so on.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an example of a first embodiment of a coupling structure of a plurality of fastening members according to the present invention.

FIG. 2 is a cross-sectional view illustrating a process of forming a coupling structure of a plurality of fastening members according to the present invention;

3A and 3B show other examples of the coupling structure of a plurality of fastening members according to the present invention, wherein FIG. 3A is a cross-sectional view thereof, and FIG.

FIG. 4 is a front view showing still another example of the coupling structure of the plurality of fastening members in FIG.

FIG. 5 is a cross-sectional view showing a second embodiment of the coupling structure of a plurality of fastening members according to the present invention;

FIG. 6 is an explanatory view showing a main part of a coupling structure of a plurality of fastening members in FIG. 5;

FIG. 7 is a cross-sectional view showing a still further example of a coupling structure of a plurality of fastening members according to the present invention in an attached state.

FIG. 8 is a sectional view showing still another embodiment of the coupling structure of the plurality of fastening members in FIG. 1;

FIG. 9 is an explanatory view showing a conventional temporary fixing of a nut / bolt and a washer.

[Explanation of symbols]

 A Connecting structure of a plurality of fastening members 1 One fastening member 2 The other fastening member 3 Holding member 4 Through hole 7 One end 8 Support body 9 Stop body 16 Projection

Claims (3)

[Utility model registration claims] 1. A coupling structure of a plurality of fastening members for temporarily fixing one fastening member and another fastening member having a through hole having a predetermined diameter by a holding member, wherein one end of the holding member is connected to the one fastening member. To lock,
The other end of the holding member protrudes from one side of the one fastening member to form a support. After passing through the through hole of the other fastening member on the outer periphery of the support, the outer end of the support is formed. A connection structure for a plurality of fastening members, wherein a stop is provided by projecting the portion outward from at least the inner diameter of the through hole. 2. A joint structure of a plurality of fastening members for temporarily fixing a fastening member having a female screw or a male screw and a fastening member having a through hole of a predetermined diameter by a holding member, wherein the one fastening member is provided. One end of the holding member is locked to the outer periphery of the holding member, and the other end of the holding member is projected to the seat surface side of the one fastening member to form a support, and the other fastening member is formed on the outer periphery of the support. After passing through the through-hole, the outer end of the support body is extended at least outward from the inner diameter of the through-hole to provide a stopper, and a cut is made in the seating surface of the one fastening member with respect to the holding member. A structure for coupling a plurality of fastening members, wherein a projection is provided. 3. A coupling structure of a plurality of fastening members for temporarily fixing a one-side fastening member having a female thread and a second-side fastening member having a through hole of a predetermined diameter by a holding member. One end of the holding member is locked, and the other end of the holding member is protruded toward the seat surface side of the one fastening member to form a cylindrical support. After passing through the through hole of the member,
An outer end portion of the support is extended at least outwardly from the inner diameter of the through hole to provide a stopper, and the support has a diameter smaller than the outer diameter of the external thread of the externally threaded body to be inserted when fastening the inner diameter. A coupling structure for a plurality of fastening members, wherein