JP3214871U - Bolt / Nut Fastener - Google Patents

Abstract

Provided is a bolt and nut fastener capable of easily confirming visually whether or not a work in a fastening state by bolts and nuts between objects to be fastened is completed, and maintaining a fastening state for a long period with little looseness. A bolt and nut fastener that fastens and fastens to-be-fastened objects C and P together with a bolt body 1 and a nut body 2 with a nut washer 3 screwed to a threaded portion of the bolt body 1; A bolt washer 4 in which the head of the bolt body 1 is fitted with a hook, and a spring washer 5 fitted between the bolt washer 4 and the head are provided. The spring washer 5 is crushed in a flat shape upon completion of screw fastening between the bolt body 1 and the nut body 2. [Selection] Figure 2

Description

  This device, for example, can be fixed securely and firmly when screwing and fixing various structures such as partition edges and brackets in building structures such as buildings, factories, and houses, and easily confirm the fastening state. The present invention relates to a bolt and nut fastener that can be made.

  Conventionally, various structural members are fixed to a structure by bolts inserted into the structural members and nuts screwed to the inserted bolts for assembling various structures, members and other installations. doing. When fastening with the bolts and nuts, the bolt head surface that contacts the surface of the component member, the structure, etc., the component member, the structure to be fastened by interposing a washer on the nut surface The surface pressure applied to each of the seating surfaces is reduced to prevent the seating surface from being depressed, and the looseness after fastening with screws can be reduced.

  In the case of fastening with such bolts and nuts, fixing is performed by screwing that is rotated in a spiral manner, so that the screwing state is loosened by vibration generated in the fastened object or external vibration or the like, and the fastened objects are separated from each other. I might let you.

  In order to eliminate such points, for example, as shown in Patent Document 1, a washer bolt formed by combining a flat washer with a middle bolt and a disc spring nut having a disc spring washer on a nut are prepared. There is a bolt connection structure in which the objects to be fastened are screwed together.

  According to the bolt connection structure of Patent Document 1, a so-called double nut mode, or a spring washer interposed mode in which a spring washer is interposed between a fastened surface and a nut-side washer or the like, etc. Compared to the fastening configuration, the advantage that the locking action is maintained by maintaining the initial fastening axial force for a long time can be obtained.

Registered Utility Model No. 3161303

  However, in the bolt connection structure according to Patent Document 1, the washer surfaces of the washer bolt and the disc spring nut are in close contact with the fastened object surface after screwing, and the fastened objects are fastened to each other. When a through-bolt is used to fix a square channel material to a body edge material such as a partition in a structure, the washer itself is integrated with the bolt and nut, so that the fastening is in close contact with the surface of the object to be fastened. It was very difficult to see whether it was in a state or not.

  Moreover, in the partitioning work, one side may not be able to see the other side of the opposite side of the work, and therefore the final fastening state may not be confirmed. It was.

  Therefore, this device was devised in view of various circumstances that existed in the past, and its purpose is to maintain the fastening state between the bolts and nuts of the objects to be fastened over a long period with little looseness. Of course, it is an object of the present invention to provide a bolt / nut fastener capable of easily confirming the presence or absence of a fastening state after the fastening operation.

In order to solve the above-described problems, the present invention is a bolt and nut fastener that fastens and fastens the objects to be fastened (C, P) to each other. A nut main body 2 with a nut washer 3 to be screwed, a bolt washer 4 in which the head of the bolt main body 1 is fitted with a trap, and a spring washer 5 fitted and interposed between the bolt washer 4 and the head. It is provided with.
The spring washer 5 can be configured to be flattened when the bolt body 1 and the nut body 2 are screwed together.

In the bolt and nut fastener according to the present invention configured as described above, a bolt body 1 that is inserted through the objects to be fastened (C, P) and a nut body 2 that is screwed into the bolt body 1 When screwing and fastening, after completion of the fastening operation, the spring washer 5 on the head of the bolt body 1 is crushed, so that the presence or absence of completion is confirmed by visual observation of the situation.
The nut washer 3 of the nut body 2 and the bolt washer 4 having the head of the bolt body 1 are in contact with the surface of the object to be fastened (C, P), so that the screwing operation for the nut body 2 and the bolt body 1 can be smoothly performed. In addition, the fastening pressure is dispersed to protect the fastening object (C, P) surface.
When the spring washer 5 is gradually crushed as the bolt main body 1 or the nut main body 2 is screwed and rotated, the spring washer 5 is interposed between the head of the bolt main body 1 and the bolt washer 4 so that it is crushed without difficulty. Does not hinder the fastening work by screwing rotation.

  Since the present invention is configured as described above, for example, when fastening the partitioning pillar P and the channel material C in the building structure to each other, the head of the bolt body 1 is arranged on the side of the spring washer 5. By visually observing the situation, it means that the fastening state is completed when it is being crushed, so the presence or absence of the fastening operation can be easily confirmed. In addition, the screwing and rotating work can be smoothly performed by contacting the nut washer 3 and the bolt washer 4 with the surfaces to be fastened (C, P). It helps to further improve.

  In other words, this is because the present invention includes a bolt main body 1, a nut main body 2 with a nut washer 3, a bolt washer 4, and a spring washer 5 that is fitted and interposed between the bolt washer 4 and the head. It is possible to check whether or not the fastening work has been completed and to perform the fastening work smoothly.

  In addition, since the spring washer 5 is inserted and interposed between the bolt washer 4 with the head of the bolt main body 1 fitted in the crocodile and the head, the screw fixing rotation work of the nut main body 2 or the bolt main body 1 etc. As a result, the spring washer 5 can be crushed smoothly and smoothly, and since the screwing rotation operation is not hindered, the working efficiency can be greatly improved.

  In addition, the code | symbol attached | subjected in each of the means for solving said subject, and the item of the effect of an invention was attached | subjected in order to make easy reference with the part which shows each structure part described in drawing. The present invention is not limited to the structure and shape shown by these descriptions and reference numerals in the drawings.

It is a disassembled perspective view which shows one form for implementing this device. Similarly, it is sectional drawing in the fastening state of an example of to-be-fastened objects, The (A) is before a fastening operation | work and (B) is after a fastening operation | work. It is a graph which similarly shows the comparison data of the fastening state by the conventional fastener, and this invention fastener. (A), (b), (c) is a side view which shows the structural example of the conventional fastener.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment for carrying out the present invention will be described below with reference to the drawings. Reference numeral 1 shown in the figure is a bolt body formed with a predetermined length and diameter. In this case, the head has a head and a male screw part formed with a predetermined length.

  The nut main body 2 used together with the bolt main body 1 is integrally combined by engaging the nut washer 3 in a freely rotatable state so as to be positioned on the head side of the bolt main body 1. .

  Further, the head of the bolt body 1 is arranged by fitting a bolt washer 4 to the head, and a spring washer 5 is fitted between the bolt washer 4 and the head. That is, in the bolt washer 4 that is brought into close contact with the fastened object (C, P) surface when the bolt is fastened, the nut body 2 is screwed into the male threaded portion while the bolt body 1 is inserted into the fastened object. When the bolted body (C, P) is fastened together, the head presses the spring washer 5 as the nut body 2 is pulled in, so that the head is pressed between the bolt washer 4. Thus, the spring washer 5 is flattened.

  The bolt washer 4 and the spring washer 5 are fitted in advance to the screw shaft portion of the bolt main body 1 as a preliminary process when the nut main body 2 is usually combined with the bolt main body 1 by screwing. Further, when these bolt washers 4 and spring washers 5 are simply fitted to the bolt main body 1, they are pulled out and separated as they are, so that after the fitting, the nut main body 2 is screwed in a temporarily fixed state.

  Next, an example of the use of this will be described. As shown in FIG. 2, for example, when the channel material C is fastened and fixed to the stud P in the partition configuration in various building structures, the bolt main body 1 is mutually connected to the stud P and the channel material C. , And the nut body 2 is removed from the bolt body 1 that has been pre-assembled as described above, and the bolt P and the spring washer 5 remain fitted, for example, the stud P can be seen. The bolt body 1 is inserted. Next, the nut body 2 is screwed again to the male thread portion of the bolt body 1 from which the channel material C protrudes. With this screwing, the spring washer 5 interposed between the bolt washer 4 is gradually crushed as the head of the bolt main body 1 comes close to the surface of the stud P, and after the fastening operation is completed, the bolt main body 1 The spring washer 5 is sandwiched between the head and the bolt washer 4 in a flat state.

  By doing so, since the spring washer 5 is in a crushed state, the completion of the fastening operation can be confirmed by visually observing this.

  FIG. 3 shows the result of the vibration test after the fastening between the fastened objects (C, P) according to the present invention in comparison with that after the fastening with the conventional fastener of this type. .

This vibration performance test was performed under the following conditions.
Testing machine: Approx. Right-angle vibration type screw looseness testing machine (manufactured by Shimadzu testing machine service)
Excitation amplitude: + -0.5mm
Vibration frequency: 3.3Hz
Initial tightening axial force: 17500N
Measurement time: 5 minutes (finished when the axial force becomes zero)

  Further, as shown in FIG. 4, each of the conventional fasteners shown during the vibration test is arranged on the bolt body 11, the nut body 12, the bolt washer 14, the nut washer 13, and the nut body 12 side. (B) is a so-called double nut configuration type in which a bolt body 21, a bolt washer 24, two nut bodies 22, and a nut washer 23 are combined. (C) is a bolt body 31 and a nut. This is a four-piece configuration type in which the main body 32, the bolt washer 34, and the nut washer 33 are combined.

  According to this, the advantage of the fastener by this invention can be understood clearly.

C: Channel material P ... Spacer 1 ... Bolt body 2 ... Nut body 3 ... Nut washer 4 ... Bolt washer 5 ... Spring washer 11 ... Bolt body 12 ... Nut body 13 ... Nut washer 14 ... Bolt washer 16 ... Spring washer 21 ... Bolt Body 22 ... Nut body 23 ... Nut washer 24 ... Bolt washer 31 ... Bolt body 32 ... Nut body 33 ... Nut washer 34 ... Bolt washer

Claims (2)

  A bolt and nut fastener that fastens and fastens the objects to be fastened together, with the bolt body, the nut body with a nut washer screwed to the threaded portion of the bolt body, and the head of the bolt body fitted together A bolt and nut fastener comprising a bolt washer and a spring washer fitted and interposed between the bolt washer and the head.   The bolt / nut fastener according to claim 1, wherein the spring washer is flattened when screw fastening between the bolt body and the nut body is completed.

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