JPH1130216A - Fastening condition visually checking member in fastening part and fastening condition visually checking set member in fastening part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maximally reduce failure in fastening and fastening negligence in a fastening part and to check whether a fastening condition is good or not from a distance. SOLUTION: A fastening condition visually checking member 1 provided with an insertion hole, through which a fastening member such as a bolt and a machine screw can be passed, of which a fastening part, is constructed of soft material such as rubber and formed into a ring shape, for example. In the fastening part, the fastening condition visually checking member 1 is arranged between fastening members such as a bolt and nut, between a fastening member and a fastened body, or between fastened bodies, and according to progress of fastening, the checking member 1 is clamped and pressed by means of both side members clamping the checking member 1 and deformed so as to be extended in the direction toward the face crossing an axis 3 of the insertion hole, and as a result, an outer circumferential edge 4 of the checking member 1 is protruded outward beyond the edge part (a) of the fastening members and the like so as to form a projection part 5, which can be visually checked clearly from a distance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a member for visually confirming a fastening state in a fastening portion and a set member for visually confirming a fastening state in a fastening portion.

[0002]

2. Description of the Related Art Conventionally, when two or more members to be fastened, such as building materials, are fastened by using a fastening member consisting of a bolt-nut combination, a screw, and a bolt alone, there are places where forgetting or insufficient fastening is performed. Such a situation often occurs in the construction of a building such as a house.

[0003] In addition, there are buildings where it is necessary to check the fastening state of the fastening portion after a certain period of time after construction or at other regular intervals. For example, there are many public facilities such as power transmission towers. Conventionally, it has been investigated whether the fastening state is reliable by climbing directly to these buildings, actually hitting the intended fastening portion with a hammer, and making a judgment based on the sound.

[0004]

However, an effective method for solving the problem of forgetting to tighten or insufficient tightening has not yet been proposed, and there are still some places where forgetting or insufficient tightening have occurred. By devoting attention to work, the above inconvenience can be reduced to some extent, but there is a problem that work efficiency is instead reduced. In addition, the method of directly confirming the fastening part by climbing to the tower is enormous work and inefficient, and requires a skill of hitting with a hammer to judge with the sound, so human resources are required. There was a problem that it was not possible to secure necessary work because it could not be secured. Inexperienced workers must check the fastening state with a wrench or the like, so that the troublesome work is not the above ratio.

The inventor of the present invention has conducted intensive studies to solve the above-mentioned problems, to reduce forgetting or insufficient tightening of the fastening portion as much as possible, and to make it possible to check the quality of the fastening condition from a distance. Thus, the present invention has been completed.

[0006]

According to the present invention, there is provided (1) a fastening portion for fastening an object to be fastened by a fastening member, between fastening members, between a fastening member and an object to be fastened, or an object to be fastened. A member for visually confirming a fastening state which is used by being arranged between the members, has an insertion hole through which the member for fastening can be inserted, and is deformed by being pinched by fastening of the fastening portion to intersect with the axis of the insertion hole. Extending in the direction along the surface to be fastened, and for the first time, part or all of the outer peripheral edge of the member for visually confirming the fastening state sandwiches at least one of the edges of the fastening member and the object to be fastened, or sandwiches it. A fastening portion configured to protrude outward from at least one of the edge portions of the two members to be fastened or at least one of the edge portions of the two fastening members sandwiching the at least one edge portion; For visually confirming the fastening state , (2) engaged a viewing member in the fastening part is made is colored above (1) engaged a viewing member in the fastening portion of the description, (3) above (1)
Or a member for visually confirming a fastening state in the fastening portion according to (2), and a set member for visually confirming a fastening state in the fastening portion, comprising a washer having an outer peripheral edge rising in an oblique or outwardly curved shape. (4) A member for visually confirming a fastening state in a fastening portion, wherein a washer is fixed to the member for visually confirming a fastening state in the fastening portion according to the above (1) or (2), and (5) a washer is provided. The above-mentioned (4), wherein the outer peripheral edge portion is formed so as to rise obliquely or in an outwardly curved shape, and the outer peripheral edge of the member for visually confirming the fastening state in the fastening portion is positioned on the lower surface of the rising portion of the washer. And (6) a member for visually confirming a fastening state in a fastening portion, wherein a non-curing putty-like material is provided on a washer.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 1 is a plan view showing an example of a member for visually confirming a fastening state (hereinafter, simply referred to as a member for visual recognition) in a fastening portion of the present invention, and FIG. 2 is a sectional view taken along line AA of FIG. In the drawing, reference numeral 3 denotes an axis of the insertion hole 2. The shaft 3 is a virtual one, and is not provided as a shape on the viewing member 1. That is, the hole 2 is a complete space. The visual recognition member 1 of the present invention includes one or more fasteners such as a screw or bolt, a combination of two members of a bolt and a nut, or a combination of members such as a washer and a spring washer therebetween. In a fastening portion where two or more objects to be fastened are fastened by the member for use, it is used by being arranged between two objects to be fastened, between objects to be fastened and a member for fastening, or between two members for fastening. It is something that can be done.

The member for visual recognition 1 has an insertion hole 2 through which a rod-like portion of a fastening member (so-called male screw) having a rod-like portion (usually a screw is formed) such as a bolt can be inserted. Is usually formed in an annular shape. The member for visual recognition 1
Usually, it is made of a soft material such as rubber or soft plastic, for example, so that it is deformed to a degree corresponding to the degree of the external force when applied. The member for visual recognition 1
When this is arranged in the fastening portion, it is configured as follows. That is, as shown in FIG. 3, for example, the member for visual recognition 1 is placed between the two members 6 and 7 or between the member 7 and the member 8 for fastening (in the figure, 8 represents a washer). Or between the two fastening members 8 and 9 (9 is also a washer in the figure),
A size such that the outer peripheral edge 4 of the viewing member 1 can be located inside any edge a of both side members (the fastening member and the body to be fastened) sandwiching the viewing member 1 ( (Outer diameter, thickness) and shape. When the fastening in the fastening state is insufficient, the visual recognition member 1 cannot be reliably viewed from a distance behind a fastening member or a body to be fastened. In the figure, 10 is a spring washer, 11 is a nut, and 12 is a bolt.

Since the fastening has not progressed at all, there is a large gap between the fastening member or the member to be fastened and the member for visual recognition. ,
In the case where the visual recognition member 1 is clearly visible as a result, the present invention is not a problem. The object of the present invention is a case where the fastening state is almost completely finished but the fastening is actually performed with insufficient fastening force.

When the visual recognition member 1 is disposed in the fastening portion in the above-described manner, as shown in FIG.
Due to the fastening of the fastening portion, it is deformed by being pinched by a predetermined force required for complete fastening and extends in a direction along a plane intersecting the axis 3 of the insertion hole 2, and thereby, the first time the visual member 1 A part or the whole of the outer peripheral edge 4 is at least one edge a of the fastening member and the fastened member sandwiching the visual recognition member 1 or at least one edge of the two fastened members sandwiching the same. a, or at least one of the edge portions a of the two fastening members sandwiching it,
(Referred to as an edge a of a fastening member or the like). The size of the protruding portion 5 is arbitrary, but is preferably large because the visibility of the protruding portion 5 becomes good. The shape of the protruding portion 5 when it protrudes is not limited. That is, it may be flat or swelled up and down in any manner.

The member 1 for visual recognition is deformed by being pinched by the fastening of the fastening portion, and is deformed in the direction along the plane intersecting the axis 3 of the insertion hole 2 (that is, the clamping surface of the member to be fastened or the member for fastening. The viewing member 1 is squashed and spread into a flat state.

The material of the visual recognition member 1 is polyethylene, polypropylene, vinyl chloride, polycarbonate,
Plastics such as polyamide and polyethylene terephthalate, rubbers and the like can be used.

The material of the visibility member 1 can be appropriately selected in accordance with the required ease of deformation. In other words, when used in a fastening portion where a strong fastening force is required to make a sufficient fastening state, it is necessary to make the shape relatively easy to deform as it is relatively difficult to deform. Among the soft materials, a relatively hard material such as the above-mentioned plastic is selected. Conversely, a soft and elastic material such as rubber is selected for a fastening portion that can be brought into a sufficient fastening state with a weak fastening force.

The shape of the member for visual recognition 1 can be selected to change the ease of deformation. If the member for visual recognition has a hollow structure, it is easily deformed, and if it has a solid structure, it is hardly deformed. Changing the thickness can also change the ease of deformation.

In the present invention, only when the fastening is securely performed, that is, when the fastening is performed with the required predetermined force, a part or all of the outer peripheral edge 4 of the visual recognition member 1 is removed. To protrude outward from the edge a of the fastening member or the like that sandwiches it, in order to ensure reliable fastening even with a small fastening force, to eliminate the waste of fastening with an unnecessarily strong fastening force In consideration of the above, it is preferable to design the material, the overall shape, the thickness, and the like.

Contrary to the above, in the case where secure fastening cannot be performed without a large tightening force, part or all of the outer peripheral edge 4 of the visual recognition member 1 is inadvertently pinched by a small tightening force. It is necessary to design the material, overall shape, and the like so as not to protrude outside the edge a of the fastening member or the like.

The force required to secure the fastening is determined experimentally. For example, by performing a tightening experiment using a tightening tool that knows the tightening force such as a torque wrench, and knowing the relationship between the tightening force and the quality of the tightened state, it is possible to know the appropriate tightening force to achieve a good tightened state. it can.

When the visual recognition member of the present invention is disposed on the above-mentioned fastening portion via a washer, the washer 13 to be used is, as shown in FIG.
Is preferably formed in a shape rising in an oblique direction. The washer has such a size and shape that the portion of the outer peripheral edge portion 14 rising in the oblique direction can be located on the outer peripheral edge 4 of the visual recognition member 1. By arranging such a washer so that the raised outer peripheral edge portion 14 is in contact with the member for visual recognition 1, it becomes easy to spread outward when the member for visual recognition 1 is squeezed. 1 can easily be made to protrude outward from an edge a of a fastening member or the like that sandwiches the member for visual recognition 1. As a result, the outer peripheral edge 4 can be reliably protruded, and the state shown in FIG. 6 can be obtained. In the figure, reference numeral 15 denotes a washer, but this is not essential. In particular, FIG.
As shown in FIG. 5, the diameter of the visual recognition member 1 is set so that the visual recognition member 1 spreads outward without being substantially crushed when it is pinched, and the outer peripheral edge 4 can protrude outward from the edge a.
It is preferable that the configuration is well-balanced in consideration of the relationship between the wall thickness and the like and the rising inclination angle of the washer 13.
It is effective to make the shape 4 outwardly curved as shown in FIG.

The visual recognition member of the present invention can be obtained by using a conventionally known plastic molding method such as injection molding, extrusion molding, blow molding or the like, or by cutting a lump of plastic into a desired shape. Is also obtained. Of course, rubber can be used as a raw material instead of plastic. When the member for visual recognition has a hollow structure, the opening is sealed by heat fusion, ultrasonic fusion, high frequency fusion, or the like after extrusion or blow molding.

In the member for visual recognition of the present invention, a part or the whole of the outer peripheral edge 4 has at least one end a of the fastening member and the object to be fastened, or the two In a state where at least one of the edges a of the object to be fastened or at least one of the edges a of the two fastening members sandwiching the edge a protrudes outward to form the projection 5, the projection 5 is It is necessary to be able to surely and clearly recognize the object even from a distant place.
It is preferable that at least the protruding portion 5 has a color, brightness, and the like different from those of other portions in the vicinity thereof, so that it can be particularly appealing to visual sense. Usually, the entire visibility member 1 is yellow, red, green,
It is configured to be colored in a clear color such as white or blue, or to be further colored in a fluorescent manner. The color is arbitrary as long as it is clearly visible even from a distance, but a bright color is preferred. When the visibility member is obtained by plastic molding, the coloring is performed simultaneously with the formation of the shape of the visibility member by molding using a molding raw material in which a raw material resin and a coloring agent are mixed. After the visibility member is formed, it can be colored by painting or the like.

As shown in FIG. 3 (b), the member for visual recognition according to the present invention includes bolts 12 from both sides of two members 6 and 7 to be fastened.
When fastening with the nut 11 and the nut 11
A spring washer 10 and a washer 8 are interposed therebetween, the member for visual recognition 1 is disposed between the washer 8 and the object 7 to be fastened, and a bolt 12 is attached to the nut 11 from the opposite side with the two objects 6 and 7 interposed therebetween. In addition to being used in such a manner that screws and bolts are not interposed therebetween, a method in which a washer or a spring washer is not interposed, or as shown in FIG. Can be used such that the spring washer 10 or the washer 8 is interposed between the bolt 12 or the like and the members 6 and 7 as necessary. The number of objects to be fastened may be three or more.

In the present invention, as shown in FIGS. 8A and 8B, a washer 15
Can be fixed and integrated to form the visual recognition member 16. The fixing to the washer 15 can be performed by an adhesive or the like. The viewing member 16 integrated with the washer does not have to be separately prepared and attached when used, and thus has an advantage that the attachment and fastening operation can be simplified. As the washer in this case, it is preferable to use a washer having a shape in which the outer peripheral edge is raised as described above. FIG. 8B shows the washer 15 of the viewing member 1 in order to secure the adhesion between the washer 15 and the viewing member 1.
This is an example in which the adhesive surface side of the substrate is formed flat.

In the present invention, the member for visual recognition may be constituted by providing a washer with a non-curable putty-like material. FIG. 12 shows an example. In the figure, reference numeral 17 denotes a member for visual recognition, and a non-curable putty-like material 20 is provided on the upper surface of a washer 19, and
0 is provided with a washer 18 on the upper surface,
In this embodiment, a putty is sandwiched between two washers. 21 is an insertion hole for a fastening member. As the putty-like material, a clay-like substance, a gum-like substance, and the like can be used in addition to a conventionally-known putty-like substance as a so-called putty for a building material or a work material. When this visual recognition member 17 is used for the fastening portion, as shown in FIG. 13, the soft putty-like material is crushed by being pinched, and is prevented from going inward by the bolt 12, so that it goes outward. Only protrude to form a protrusion. The putty 20 is also mixed with a coloring agent and the like as described above. In the visual recognition member 17,
The washer 1 is arranged so that the putty 20 can be projected outward of the washers 18 and 19 only when the visual member 17 is clamped by a predetermined force required for complete fastening at the fastening portion.
The size (outer diameter, thickness) and shape of the putty portion are designed in accordance with the outer diameter and shape of 8, 19.

The visual recognition member of the present invention can be used in various fastening parts in addition to the fastening parts in buildings and the like. In particular, once constructed, it can be suitably used for fastening between members in dangerous facilities, high-rise buildings, steel towers, and the like that cannot easily climb the structure.

[0025]

Next, the present invention will be described in more detail with reference to specific examples. Example 1 An aluminum mold was prepared, and a yellow annular rubber member for visual recognition indicated by 1 in FIG. 9 as a longitudinal sectional view was formed by injection molding using the aluminum mold. The thickness of the member (the diameter of the portion represented by the cut cross section) was 5 mm.

EXAMPLE 2 A washer having a diameter substantially equal to the diameter of the member for visual recognition obtained in Example 1 was fixed to the upper surface of the member with an adhesive, and the washer was integrally provided with the washer. I got

Test Example Using the member for visual recognition obtained in Example 1, a test for confirming its function was performed. As the members to be fastened 6 and 7 described later, an iron plate having a length of 100 mm x a width of 100 mm x a thickness of 3 mm with a bolt hole was used. As shown in FIG. 9, the bolt 12 has a washer 15, members to be fastened 6, 7, a member for visual recognition 1, a washer 8, a spring washer 10, and a nut 11.
Were provided in this order, and the nut 11 was tightened. When the thing with insufficient tightening was viewed from a distance, no yellow color was seen due to the member for visual recognition. Next, when the tightening was completely performed, the outer peripheral edge 4 of the viewing member, which was inside the outer peripheral edge a of the washer 8 before the tightening, proceeds to a state where the tightening is almost complete, and the visual member 1 Is compressed, the outer peripheral edge 4 extends outward, and in a state where the tightening is completed, the state changes to a state where the protruding portion 5 is formed to protrude outward from the outer peripheral edge a of the washer 8. When the tightened state was viewed from a distance, the yellow color of the protrusion 5 of the visual recognition member 1 was confirmed.

[0028]

Since the member for visually confirming the fastening state in the fastening portion according to the present invention is constructed as described above, it is possible to determine whether or not the fastening portion is securely fastened at a required pressure. It can be visually confirmed as well as transmitted feel. Therefore,
It is effective for preventing forgetting to fasten. Also, whether or not the fastening portion is securely fastened can be visually recognized from a position away from the fastening portion. Therefore, even when it is necessary to confirm whether or not the fastener is securely fastened, since the investigation can be performed from a position distant from the fastening part, that is, from a distant place, there is an effect that the labor for the investigation can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of a member for visually confirming a fastening state in a fastening portion of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a diagram illustrating a use mode of a member for visual recognition.

FIG. 4 is a longitudinal sectional view showing a preferred example of a washer used in combination with a member for visual recognition.

FIG. 5 is an example of a combined arrangement of a member for visual recognition and a washer shown in FIG.

6 is a diagram showing an example of a state of attachment to a fastening portion when the washer of FIG. 4 is used.

FIG. 7 is a diagram showing another mode of use of the present invention.

FIG. 8 is a view showing an example of a visual recognition member of the present invention having a washer fixed thereto.

FIG. 9 is a diagram illustrating a fastening procedure when a functional test is performed using a specific example.

FIG. 10 is a diagram showing an example of a mounting state in which the washer of FIG. 4 is used and the viewing member is not crushed.

FIG. 11 is a diagram showing an example of a mounting state when the washer of FIG. 4 is used and a washer of a preferable mode used for not crushing the member for visual recognition is used.

FIG. 12 is a longitudinal sectional view showing another example of the visual recognition member of the present invention.

13 is a view showing a state of attachment to a fastening portion when the visual recognition member of FIG. 12 is used.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 The member for visually confirming a fastening state in a fastening part 2 Insertion hole

Claims (6)

[Claims] In a fastening portion for fastening an object to be fastened by a fastening member, a fastening state used between the fastening members, between the fastening member and the object to be fastened, or between the objects to be fastened. It is a member for visual recognition, having an insertion hole through which the fastening member can be inserted, deformed by being pinched by fastening of the fastening portion, and extending in a direction along a plane intersecting with the axis of the insertion hole, and thereby, for the first time Part or all of the outer peripheral edge of the member for visually confirming the fastening state is at least one of the edge portions of the fastening member and the body to be fastened, or the sandwiching member 2.
At least any one of the edge portions of one of the members to be fastened, or at least any one of the two fastening members sandwiching it, so as to protrude outward from at least any one of the edge portions. A member for visually confirming the fastening state. 2. The member for visually confirming a fastening state in a fastening portion according to claim 1, wherein the member for visually confirming a fastening state in the fastening portion is colored. 3. The fastening in the fastening portion according to claim 1 or 2, comprising a member for visually confirming a fastening state in the fastening portion, and a washer whose outer peripheral edge rises obliquely or outwardly in a curved shape. Set member for visual recognition of state. 4. A member for visually confirming a fastening state in a fastening part, wherein a washer is fixed to the member for visually confirming a fastening state in the fastening part according to claim 1 or 2. 5. A washer whose outer peripheral edge rises obliquely or in an outwardly curved shape, and an outer peripheral edge of a member for visually confirming a fastening state in a fastening portion is positioned on a lower surface of the rising portion of the washer. The member for visually confirming a fastening state in the fastening portion according to claim 4 configured at least. 6. A member for visually confirming a fastening state in a fastening portion, wherein a non-curable putty-like material is provided on a washer.