JP7462343B2 - Retaining fixture - Google Patents

Description

The present invention relates to a holder. More specifically, it relates to a holder for holding an inspection tool used, for example, in inspecting concrete structures.

Due to the need to reduce life cycle costs, make effective use of resources, and reduce the environmental impact of construction projects, there is a demand to significantly extend the lifespan of concrete structures.

To meet these demands, regular inspections and surveys of concrete structures are conducted, and repair work is carried out as necessary.

Inspection of concrete structures involves primarily visually inspecting the structure to check for damage, such as loose concrete, exposed rebar, and corrosion.
In addition, specific methods for inspecting concrete structures include long-distance visual inspection and close-up visual inspection.

A long-distance visual inspection is an inspection method in which you walk as close as possible to a concrete structure using binoculars or other tools to visually check for damage or abnormalities.
Close-up visual inspection is an inspection method that uses ladders, scaffolding, aerial work vehicles, etc. to get close enough to the concrete structure to perform palpation and tapping inspection, and examine the damage and abnormalities in detail.

For example, when conducting a close-up visual inspection of a concrete structure, the concrete surface is struck with a hammer, and the sound produced is used to determine whether the area is sound or deteriorated, and the state of damage is examined.
However, when using a hammer for inspection, the inspection is carried out by repeatedly striking the concrete surface with each blow, meaning that the concrete surface is inspected at "points," and it is not possible to inspect the areas between the points, which means that it is easy to overlook areas of deterioration.

In view of this, various inspection tools have been proposed in the past. For example, Patent Document 1 discloses an inspection tool shown in FIG.
That is, the inspection tool 110 described in Patent Document 1 comprises an extendable operating rod 120 and a rolling striker 130 supported rotatably on a support shaft portion 125 that constitutes the tip of the operating rod 120.

The striking element 130 is a polyhedron whose cross-sectional shape is a regular hexagon, and its outer periphery is equally divided into six striking surfaces consisting of cylindrical faces.
A connecting case 150 incorporating a rolling sound analysis unit 155 and a battery 156 is attached to the base end side of the operating rod 120, and a cylindrical sound collecting microphone unit 160 is attached to the connecting case 150.

The inspection worker holds the operating rod 120 in his/her hand, presses the rolling striker 130 against the concrete surface, and swings the operating rod 120 while pressing the rolling striker 130 against the concrete surface.
As a result, since the cross-sectional outer shape of the rolling striker 130 is a regular hexagon, the rolling striking surface strikes the concrete surface every 60 degrees of rotation, generating an impact sound, allowing for percussion inspection of a "line" rather than a "point" like with a hammer.

JP 2007-132720 A

Inspection work on concrete structures involves not only hammering inspection, in which the rolling surface of a rolling striker is used to strike the concrete surface, but also marking work in which parts of the concrete structure where dull sounds are detected during the hammering inspection work are done with chalk or other tools, and imaging work in which images of the inspection points of the structure are taken to record the inspection results, etc.
When performing these inspection tasks, different tools are used for each inspection task.

The operating rod of the inspection tool described in Patent Document 1 is structured so that the pipes and the support shaft are inserted and held in succession, starting from the lowest pipe, so that they can be pulled out. However, the support shaft and other parts are not held in a detachable manner, so that, for example, when moving from a tapping inspection operation to a marking operation, the entire inspection tool must be replaced.

In addition, when inspecting concrete structures, especially bridges, work is often carried out on scaffolding or the work platform of aerial work vehicles, and inspection equipment for marking work, such as a pipe with a chalk attached to the end, or inspection equipment for imaging work, such as a pipe with a camera attached near the end, must be brought onto the work platform of the scaffolding or aerial work vehicle for replacement.

However, because the working floor of scaffolding or aerial work platforms is a limited area, if a large number of inspection tools are brought in, they will take up space in the limited area and may hinder the inspection work.
Therefore, the inventors have conducted research into making it possible to replace only the tip end of the pipe, and as a result have completed the present invention.

The present invention was devised in light of the above points, and aims to provide a holder that can detachably hold a tubular body.

To achieve the above object, the retainer of the present invention has a space formed therein in which at least a part of the tubular body can be placed, extends in a predetermined direction, has an opening for the tubular body formed at at least one end in the predetermined direction that connects the space to the outside, has a side opening formed on the side that connects the space to the outside, and has a curved inner surface; and extends in one direction, the thickness between one surface and the other surface opposite the one surface gradually increases from one end in the extending direction to the other end opposite the one end, and is insertable from the one end into the side opening and curved in the same direction as the one direction.

Here, a space in which at least a part of the tubular body can be placed is formed inside, the space extends in a predetermined direction, and an opening for the tubular body that connects the space to the outside is formed at at least one end in the predetermined direction, and the main body has a curved inner surface, allowing at least a part of the tubular body to be placed in the space inside the main body or removed from the space inside the main body through the opening for the tubular body.

In addition, the term "extending in a predetermined direction" of the main body includes not only extending in a straight line but also extending in a curved manner.
Furthermore, the "tubular body" referred to in the present invention includes not only those having a hollow interior, but also those having a solid interior.

In addition, a side opening is formed that is open on the side and communicates the space with the outside, and the main body part has a curved inner surface, extends in one direction, and the thickness between one surface and the other surface opposite the one surface increases gradually from one end in the extending direction to the other end opposite the one end, and can be inserted into the side opening from one end, and the insert piece is curved in the same direction as the one direction, providing a slope from one end to the other end of the insert piece, so that the insert piece fits into the gap formed between at least a part of the tubular body arranged in the space inside the main body part and the inner surface of the main body part, and the wedge action of the insert piece can immobilize the tubular body in the same direction as the extending direction of the main body part.

In addition, in the retainer of the present invention, the portion on one end of the insert piece can be configured to be softer than the other portion of the insert piece.

In this case, one end portion of the insertion piece inserted into the internal space of the main body from the side opening is pinched and crushed between at least a part of the tubular body arranged in the internal space of the main body and the inner surface of the main body, making it easier for the one end portion of the insertion piece to enter the gap formed between the inner surface of the main body and at least a part of the tubular body.
Then, by rotating the tubular body at the point where one end portion of the insertion piece has entered the gap formed between the inner surface of the main body and at least a part of the tubular body, the insertion piece can be pulled further into this gap, thereby further stably preventing the tubular body from moving in the same direction as the extension of the main body.

In addition, in the retainer of the present invention, the insert piece is curved in a clothoid curve, and one end of the insert piece is curved in an arc shape, and the curvature of the one end is greater than the curvature of the other parts of the insert piece.

In this case, the one end portion of the insertion piece, at least a part of the tubular body, and the inner surface of the main body come into strong contact with each other, the shape of the one end portion of the insertion piece deforms to conform to the shape of at least a part of the tubular body, and the frictional force increases due to the reaction force caused by the one end portion of the insertion piece being pressed against at least a part of the tubular body, thereby suppressing rotation of the tubular body.
In this case, the insert piece is easier to insert into and pull out from the side opening than an insert piece curved at a constant curvature.

In addition, the retainer of the present invention can be configured such that one end of the insert is a hollow portion with an internal space formed therein, and the other end of the insert is a solid portion with no internal space formed therein.

In this case, the hollow portion of one end of the insertion piece inserted into the internal space of the main body from the side opening is pinched and crushed between at least a part of the tubular body arranged in the internal space of the main body and the inner surface of the main body, making it easier for the hollow portion of the insertion piece to enter the gap formed between the inner surface of the main body and at least a part of the tubular body.
Then, by rotating the tubular body at the point when the hollow portion of the insertion piece enters the gap between the inner surface of the main body and at least a part of the tubular body, the insertion piece can be pulled further into this gap, thereby stably preventing the tubular body from moving further in the same direction as the main body extends.

In addition, in the retainer of the present invention, the insert piece is curved in a clothoid curve, and the hollow portion of the insert piece is curved in an arc shape, and the curvature of the hollow portion can be greater than the curvature of the solid portion.

In this case, the hollow portion of the insert piece, at least a part of the tubular body, and the inner surface of the main body come into strong contact with each other, the shape of the hollow portion of the insert piece deforms to conform to the shape of at least a part of the tubular body, and the reaction force caused by the hollow portion of the insert piece being pressed against at least a part of the tubular body increases the frictional force, thereby suppressing rotation of the tubular body.
In this case, the insert piece is easier to insert into and pull out from the side opening than an insert piece curved at a constant curvature.

In addition, in the retainer of the present invention, the insert piece is curved with one side facing inward, the surface roughness of the one side of the insert piece is greater than the surface roughness of the other side of the insert piece, and the surface roughness of the inner surface of the main body is approximately the same as the surface roughness of the other side of the insert piece.

In this case, even if the insertion piece is not forcefully inserted into the main body, by simply rotating at least a portion of the tubular body disposed in the space inside the main body, the insertion piece can be easily pulled into the main body to a position where it prevents the tubular body from moving in the same direction as the main body extends, or pushed out to the outside of the main body to a position where it releases the inhibition of the tubular body's movement, as the tubular body rotates.

In addition, in the retainer of the present invention, the insert piece has a protrusion, and the protrusion can be configured to protrude in the opposite direction from the one surface on the other end side of the other surface of the insert piece.

In this case, a user can easily hook a finger on the protrusion to insert the insertion piece into the side opening of the main body or pull the insertion piece out from the side opening.
In this case, the insertion piece wears down as it is repeatedly inserted and pulled out, the insertion area of the insertion piece increases, and the distance between the other end of the insertion piece and the edge of the side opening when the insertion piece is inserted into the side opening decreases; however, the protrusion on the other end serves as a marker, making it easy to visually check the degree of wear of the insertion piece.

The retainer of the present invention can also be configured so that the distance from the center of the main body to the inner surface of the main body gradually decreases from one edge of the side opening of the main body to a predetermined range in the curved direction.

In this case, the shape of the gap between the inner surface of the main body and at least a part of the tubular body, which is created when at least a part of the tubular body is placed in the internal space of the main body, can be made to correspond to the outer shape of the insertion piece, making it easy to insert the insertion piece.

In addition, in the retainer of the present invention, two side openings are formed in the direction in which the main body extends, and the distance from the center of the main body to the inner surface of the main body from one edge of one side opening to a predetermined range in one curved direction is gradually shortened, and the distance from the center of the main body to the inner surface of the main body from the other edge of the other side opening, which corresponds to the edge facing one edge of the one side opening, to a predetermined range in the other curved direction that is opposite to the one curved direction, is gradually shortened.

Here, "corresponding to the edge facing one edge" means that when one side opening and the other side opening are similarly viewed, for example, from the front, they are in the same positional relationship as the edge facing one edge.
In other words, for example, if one edge of one side opening is located on the left side when viewed from the front, it means the edge located on the right side of the other side opening.

In this case, two side openings are formed in the direction in which the main body extends, and the insert pieces are inserted into each of the two side openings, so that the insert pieces enter the gaps formed between at least a portion of each of the two tubular bodies arranged in the internal space of the main body and the inner surface of the main body, thereby immobilizing each of the two tubular bodies in the same direction as the extension of the main body.

In this case, the shape of the gap between the inner surface of the main body and at least a part of the tubular body, which is created when at least a part of the tubular body is placed in the space inside the main body, can be made to correspond to the outer shape of the insertion piece, making it easy to insert the insertion piece.

Furthermore, in this case, the direction of insertion of the insert piece into one side opening and the direction of insertion of the insert piece into the other side opening are opposite to each other, and the two tubular bodies can be grasped, for example, with the left and right hands and rotated in opposite directions to each other, so that the insert piece can be pulled into the inside of the main body to a position that prevents the tubular bodies from moving in the same direction as the main body extends, or the insert piece can be pushed out of the main body to a position that releases the prevention of the tubular bodies from moving.

In addition, in the retainer of the present invention, the main body can be divided in a curved direction so as to be detachable, and the main body can have an attachment part to which another member can be detachably attached.

In this case, even if both ends of the tubular body are blocked by attachment of members, the tubular body can be placed in the space inside the main body.

The holder of the present invention can removably hold a tubular body.

1 is a schematic front perspective view showing an example of a main body and an insertion piece provided in a holder according to a first embodiment of the present invention. FIG. 1 is a schematic rear perspective view showing an example of a main body and an insertion piece provided in a holder according to a first embodiment of the present invention. FIG. 1B is a schematic cross-sectional view of the main body portion of FIG. 1A taken along line AA. 1B is a schematic cross-sectional view of the main body portion of FIG. 1A taken along line BB. 1 is an enlarged schematic view showing an example of an insert piece provided in a holder to which the present invention is applied. FIG. 1 is a schematic diagram showing an example of a state before a holder of a first embodiment to which the present invention is applied holds a tubular body. FIG. 1 is a schematic diagram showing an example of a state in which a tubular body is held by a holder according to a first embodiment of the present invention. FIG. 4B is a schematic cross-sectional view of the main body and the insert piece of FIG. 4A taken along line CC. 4C is a schematic cross-sectional view of the main body, the insert piece, and the tubular body of FIG. 4B taken along line DD. 11 is a schematic perspective view showing an example of a main body and an insertion piece provided in a holder according to a second embodiment of the present invention. FIG. 10 is a schematic diagram showing an example of a state in which a camera is attached to an operating pipe having a choke removably attached to one end thereof by using a holder according to a second embodiment of the present invention. FIG. 10 is a schematic diagram showing an example of a state in which a camera is attached to an operating pipe having a choke removably attached to one end thereof using a holder according to a second embodiment of the present invention to image a structure. FIG. 1 is a schematic diagram showing an example of a substantially T-shaped main body portion of a holder to which the present invention is applied. 1 is a schematic diagram showing an example of a substantially Y-shaped main body portion of a holder to which the present invention is applied. 10A and 10B are schematic diagrams showing modified examples of a main body portion of the holder according to the first embodiment of the present invention. FIG. 1 is a schematic diagram showing a conventional inspection tool.

Hereinafter, embodiments of the present invention will be described with reference to the drawings for the purpose of understanding the present invention.
FIG. 1A is a schematic front oblique view showing an example of a main body and an insert piece provided in a holder of a first embodiment to which the present invention is applied, and FIG. 1B is a schematic rear oblique view showing an example of a main body and an insert piece provided in a holder of a first embodiment to which the present invention is applied.

A holder 10 according to a first embodiment of the present invention shown in FIGS. 1A and 1B includes a body portion 11 .
The main body 11 extends in a predetermined direction, and a space is formed inside the main body 11 .
The space formed inside the main body 11 is a space in which at least a part of a tubular body, such as a pipe, a cylindrical choke, an operating pipe for a percussion rod, or a handle portion of a hammer, can be placed.
That is, the cross-sectional shape of the main body 11 in a direction substantially perpendicular to the direction in which the main body 11 extends is substantially circular, and the inner surface of the main body 11 is curved.

The main body 11 is molded as a single unit and is made of resin, but it can also be made of metal or wood, and there is of course no restriction on the material of the main body 11.

A first tubular body opening 11A is formed at one end of the body 11 in the direction in which it extends, and a second tubular body opening 11B is formed at the other end of the body 11 opposite the end at which the first tubular body opening 11A is formed.

In addition, the first tubular body opening 11A and the second tubular body opening 11B communicate the space formed inside the main body portion 11 with the outside of the main body portion 11.

As shown in FIGS. 1A and 1B, a first side opening 11C and a second side opening 11D are formed in the extending direction of the main body 11.
Further, the first side opening 11C and the second side opening 11D are open and communicate the internal space of the main body 11 with the outside of the main body 11 .
In addition, the first side opening 11C and the second side opening 11D are formed on the side surface of the main body portion 11, and the first side opening 11C and the second side opening 11D open in a direction approximately perpendicular to the direction in which the first tubular body opening 11A or the second tubular body opening 11B opens.

Figure 2A is a schematic cross-sectional view of the main body of Figure 1A taken along line A-A, and Figure 2B is a schematic cross-sectional view of the main body of Figure 1A taken along line B-B.

As shown in FIG. 2A, the distance from the center of the main body 11 to the inner surface of the main body 11 gradually decreases within a predetermined range in one curvature direction from one edge of the first side opening 11C of the main body 11 to a position on the opposite side of the first side opening 11C.

In other words, the distance R2 from the center of the main body 11 to a point on the inner surface that is farther from one edge of the first side opening 11C of the main body 11 is shorter than the distance R1 from the center of the main body 11 to a point on the inner surface that is closer to one edge of the first side opening 11C of the main body 11.
Therefore, although not shown, the distance from the center of main body 11 to a point located between the point on the inner surface of main body 11 where distance R1 is determined and the point on the inner surface of main body 11 where distance R2 is determined is shorter than R1 and longer than R2.

On the other hand, as shown in FIG. 2B, the distance from the center of the main body 11 to the inner surface of the main body 11 gradually decreases within a predetermined range in the curvature direction from one edge of the second side opening 11D of the main body 11 to a position on the opposite side of the second side opening 11D.

Here, one edge of the second side opening 11D of the main body 11 is the other edge corresponding to the edge facing one edge of the first side opening 11C of the main body 11 .
That is, as shown in Figures 2A and 2B, when the main body portion 11 is viewed in cross section, one edge of the first side opening 11C is located on the left side, and the other edge of the second side opening 11D of the main body portion 11 is located on the right side.

The direction of curvature from the other edge of the second side opening 11D is another curvature direction that is opposite to one direction of curvature from one edge of the first side opening 11C.

In addition, the distance R4 from the center of the main body 11 to a point on the inner surface closer to the other edge of the second side opening 11D of the main body 11 is shorter than the distance R3 from the center of the main body 11 to a point on the inner surface closer to the other edge of the second side opening 11D of the main body 11.
Therefore, although not shown, the distance from the center of main body 11 to a point located between the point on the inner surface of main body 11 where distance R3 is determined and the point on the inner surface of main body 11 where distance R4 is determined is shorter than R3 and longer than R4.

FIG. 3 is a schematic enlarged view of an example of an insert piece provided in a holder to which the present invention is applied.
The retainer 10 of the first embodiment of the present invention includes a first insert piece 12 and a second insert piece 13 .
The first insertion piece 12 and the second insertion piece 13 each extend in one direction.

In addition, the first insert piece 12 and the second insert piece 13 are each made of resin, but they can also be made of metal or wood, and there is of course no restriction on the material of the first insert piece 12 and the second insert piece 13.

In addition, the thickness of each of the first insert piece 12 and the second insert piece 13 between one surface and the other surface opposite the first surface gradually increases from one end in the extension direction to the other end opposite the first end.

The first insertion piece 12 and the second insertion piece 13 can be inserted from one end into the first side opening 11C and the second side opening 11D, respectively.
Moreover, each of the first insertion piece 12 and the second insertion piece 13 is curved in the same direction as the direction in which they extend.

One end of the first insertion piece 12 is a first hollow portion 12A having a space formed therein and being hollow.
The other portion of the first insertion piece 12 is a first solid portion 12B which is solid with no internal space formed therein.

Similarly, one end of the second insertion piece 13 is a second hollow portion 13A having a space formed therein and being hollow.
Similarly, the other portion of the second insertion piece 13 is a second solid portion 13B which is solid with no internal space formed therein.

Here, the portion on one end side of the first insert piece 12 and the portion on one end side of the second insert piece 13 each correspond to a range from one end to, for example, 2/5 of the total length of the extended insert piece, but of course, this is not limited to this.

Moreover, the first insertion piece 12 and the second insertion piece 13 are curved in a clothoid curve shape.
As can be seen from FIG. 3, the first hollow portion 12A of the first insertion piece 12 and the second hollow portion 13A of the second insertion piece 13 are curved in an arc shape.
Additionally, the curvature of the first hollow portion 12A is greater than the curvature of the first solid portion 12B.
Also, the curvature of the second hollow portion 13A is greater than the curvature of the second solid portion 13B.

Moreover, the first insertion piece 12 and the second insertion piece 13 are curved with one surface facing inward.
Furthermore, the surface roughness of one surface of each of the first and second insertion pieces 12 and 13 is greater than the surface roughness of the other surface of each of the first and second insertion pieces 12 and 13 .

In addition, the surface roughness of the inner surface of the main body 11 is approximately the same as the surface roughness of the other surface of each of the first insert piece 12 and the second insert piece 13.

The first insertion piece 12 also has a first protrusion 12C.
The first protrusion 12C is provided on the other end side of the other surface of the first insertion piece 12 so as to protrude in the opposite direction from the one surface of the first insertion piece 12 .

Additionally, the second insertion piece 13 has a second protrusion 13C.
The second protrusion 13C is provided on the other end side of the other surface of the second insertion piece 13 so as to protrude in the opposite direction from the one surface of the second insertion piece 13 .

The main body 11 provided in the retainer 10 of the present invention does not necessarily have to have the first tubular body opening 11A and the second tubular body opening 11B formed therein, and may be configured so that only one of them is formed.
In this case, an inspection tool having, for example, a percussion rod and a choke holder may be attached to the end of the main body opposite to the end where the tubular body opening is formed. By configuring the main body of the holder of the present invention in this way, an inspection tool having a percussion rod and a choke holder can be detachably attached to the tip of the operating pipe.
In addition to such an inspection tool, various other members may be attached to the main body. For example, a hook member may be attached to the main body so that the main body can be hung on another member.

The holder of the present invention can also be applied to the choke holder itself, and the choke holder can be detachably attached to the tubular body of the inspection tool. Of course, the choke can be detachably attached to the choke holder.
Furthermore, the main body of the chalk holder to which the holder of the present invention is applied is, in other words, the main body part of the holder of the present invention, and a through hole other than the side opening is formed on the side of the main body part, and by inserting a finger or the like into this through hole, it is possible to push out the chalk that has become embedded in the main body part toward the opening for the tubular body.

In addition, the retainer of the present invention may be configured so that only one of the first side opening 11C and the second side opening 11D is formed in the main body portion, and accordingly, the retainer of the present invention may be configured so as to have only one insertion piece.
Furthermore, three or more side openings may be formed in the extending direction of the main body, and there is of course no limit to the number of side openings.
Furthermore, the holder of the present invention can have insert pieces in a number corresponding to the number of side openings, and it goes without saying that there is no limit to the number of insert pieces.

If a first tubular body opening 11A and a second tubular body opening 11B are formed at both ends of the main body 11, a first side opening 11C and a second side opening 11D are formed in the main body 11, and the retainer 10 of the present invention further comprises a first insert piece 12 and a second insert piece 13, it is preferable because at least a portion of each of the two tubular bodies can be disposed in the space inside the main body 11 to prevent the two tubular bodies from moving in the same direction as the main body 11 extends.

In addition, the inner diameter of the portion of the body 11 where the first side opening 11C is formed and the inner diameter of the portion of the body 11 where the second side opening 11D is formed may be the same as or different from each other.

In addition, the distance R2 from the center of the main body 11 to the location on the inner surface farther from one edge of the first side opening 11C of the main body 11 does not necessarily have to be shorter than the distance R1 from the center of the main body 11 to the location on the inner surface closer to one edge of the first side opening 11C of the main body 11, and the distance R4 from the center of the main body 11 to the location on the inner surface farther from the other edge of the second side opening 11D of the main body 11 does not necessarily have to be shorter than the distance R3 from the center of the main body 11 to the location on the inner surface closer to the other edge of the second side opening 11D of the main body 11, and the distance from the center of the main body 11 to the inner surface can be configured to be the same at all locations.

However, this is preferable because the distance from the center of the main body 11 to the inner surface at one end and the other end of the main body 11 gradually shortens in the opposite curved directions from the edge of each of the two side openings to a specified range. This makes it possible to grasp the two tubular bodies, for example with the left and right hands, and rotate them in opposite directions to pull the insertion pieces into the main body to a position that prevents the tubular bodies from moving in the same direction as the main body extends, or to push the insertion pieces out of the main body to a position that releases the inhibition of the tubular bodies' movement.

Furthermore, in the retainer 10 of the present invention, the portion on one end side of the first insert piece 12 does not necessarily have to be the first hollow portion 12A, and the other portion of the first insert piece 12 does not necessarily have to be the first solid portion 12B, and all portions of the first insert piece 12 may be solid.
The same is true for the second insertion piece 13.

However, if the first insertion piece 12 is provided with a first hollow portion 12A and a first solid portion 12B, the first hollow portion 12A at one end of the first insertion piece 12 inserted into the internal space of the main body portion 11 from the first side opening 11C is sandwiched and crushed between at least a part of the tubular body arranged in the internal space of the main body portion 11 and the inner surface of the main body portion 11, making it easier for the first hollow portion 12A of the first insertion piece 12 to enter the gap formed between the inner surface of the main body portion 11 and at least a part of the tubular body, which is preferable.
The same is true for the second insertion piece 13.

In addition, in a configuration in which all parts of the first insertion piece 12 are solid, a portion on one end side of the first insertion piece 12 may be configured to be softer than other parts of the first insertion piece 12.
For example, one end portion of the first insert piece 12 may be made of an elastic material such as rubber, and the other portion of the first insert piece 12 may be made of a plastic material.
The same is true for the second insertion piece 13.

In addition, in a configuration in which all portions of the first insertion piece 12 are solid, the first insertion piece 12 can be curved in a clothoid curve, and one end portion of the first insertion piece 12 can be curved in an arc shape, with the curvature of the one end portion being greater than the curvature of the other portions of the first insertion piece 12.
The same is true for the second insertion piece 13.

Furthermore, in the retainer 10 of the present invention, the first insert piece 12 does not necessarily have to be curved in a clothoid curve, and the first hollow portion 12A of the first insert piece 12 does not necessarily have to be curved in an arc shape, and further, the curvature of the first hollow portion 12A does not necessarily have to be greater than the curvature of the first solid portion 12B.
The same is true for the second insertion piece 13.

However, if the first insertion piece 12 is curved in this manner, the first hollow portion 12A of the first insertion piece 12, at least a part of the tubular body, and the inner surface of the main body 11 will be in strong contact with each other, the shape of the first hollow portion 12A of the first insertion piece 12 will deform to fit the shape of at least a part of the tubular body, and the reaction force caused by the first hollow portion 12A of the first insertion piece 12 being pressed by at least a part of the tubular body will increase the frictional force, thereby suppressing rotation of the tubular body, which is preferable.
The same is true for the second insertion piece 13.

Furthermore, the surface roughness of one surface of each of the first insertion piece 12 and the second insertion piece 13 does not necessarily have to be greater than the surface roughness of the other surface of each of the first insertion piece 12 and the second insertion piece 13 .
Furthermore, the surface roughness of the inner surface of the main body 11 does not necessarily have to be approximately the same as the surface roughness of the other surface of each of the first insertion piece 12 and the second insertion piece 13 .

However, if the surface roughness of the inner surface of the main body portion 11 and the surface roughness of the first insertion piece 12 are like this, it is preferable because the first insertion piece 12 does not need to be forcefully inserted into the inside of the main body portion 11, and by simply rotating at least a part of the tubular body arranged in the internal space of the main body portion 11, the first insertion piece 12 can be easily pulled into the inside of the main body portion 11 to a position where it prevents the tubular body from moving in the same direction as the extension of the main body portion 11, or pushed out of the main body portion 11 to a position where it releases the inhibition of movement of the tubular body, as the tubular body rotates.
The same applies to the surface roughness of the second insertion piece 13 .

In addition, the first insert piece 12 does not necessarily have to have the first protrusion 12C, and the second insert piece 13 does not necessarily have to have the second protrusion 13C.

However, if the first insertion piece 12 has the first protrusion 12C, it is preferable because the user can easily hook his/her finger on the first protrusion 12C to insert the first insertion piece 12 into the first side opening 11C of the main body 11 or pull out the first insertion piece 12 from the first side opening 11C.
Furthermore, if the first insertion piece 12 is inserted with the first protrusion 12C, the first insertion piece 12 will wear down as the first insertion piece 12 is repeatedly inserted and pulled out, and the insertion area of the first insertion piece 12 will increase, and the distance between the other end of the first insertion piece 12 and the edge of the first side opening 11C when the first insertion piece 12 is inserted into the first side opening 11C will decrease. However, this is preferable because the first protrusion 12C provided on the other end serves as a marker to make it easy to visually check the degree of wear of the first insertion piece 12.

Next, an example in which the holder 10 according to the first embodiment of the present invention is used will be described.
FIG. 4A is a schematic diagram showing an example of a state before a holder of a first embodiment to which the present invention is applied holds a tubular body, and FIG. 4B is a schematic diagram showing an example of a state after the holder of the first embodiment to which the present invention is applied holds a tubular body.
Moreover, Figure 5A is a schematic cross-sectional view of the main body and insertion piece of Figure 4A taken along line CC, and Figure 5B is a schematic cross-sectional view of the main body, insertion piece, and tubular body of Figure 4B taken along line DD.

Here, we will use a choke and an operating pipe as examples of tubular bodies, but of course the tubular bodies are not limited to these.

A part of the choke 20, i.e., the lower end portion, is placed in a space formed inside the main body portion 11 through the first tubular body opening portion 11A of the main body portion 11 of the holder 10 of the present invention.
At this time, as shown in FIG. 5A, one end of the first insertion piece 12 is only slightly inserted into the first side opening 11C, and the first insertion piece 12 is hardly inserted into the first side opening 11C.

Then, with a portion of the choke 20 disposed in the space inside the main body 11, the first insertion piece 12 is moved in the first insertion direction 14 and inserted into the first side opening 11C.
At this time, as shown in Figure 5B, the first insertion piece 12 enters into the gap formed between a part of the choke 20 arranged in the space inside the main body 11 and the inner surface of the main body 11, and the wedge action of the first insertion piece 12 makes it possible to prevent the choke 20 from moving in the same direction as the extension of the main body 11.

In addition, the surface roughness of one side of the first insertion piece 12 is greater than the surface roughness of the other side of the first insertion piece 12, and the surface roughness of the inner surface of the main body 11 is approximately the same as the surface roughness of the other side of the first insertion piece 12. Therefore, even if the first insertion piece 12 is not inserted forcefully, the choke 20 can be rotated to the right to further pull the first insertion piece 12 into the gap between the inner surface of the main body 11 and a part of the choke 20.

At this time, the first hollow portion 12A provided at one end of the first insertion piece 12 is crushed by being sandwiched between a part of the choke 20 and the inner surface of the main body 11, making it easier for the first hollow portion 12A of the first insertion piece 12 to enter the gap formed between the inner surface of the main body 11 and a part of the choke 20.

As a result, the choke 20 can be prevented from moving more stably in the same direction as the main body 11 extends.

In addition, the first insertion piece 12 is curved in a clothoid curve, and the first hollow portion 12A of the first insertion piece 12 is curved in an arc shape, and the curvature of the first hollow portion 12A is greater than the curvature of the first solid portion 12B, so that the first hollow portion 12A of the first insertion piece 12, a portion of the choke 20, and the inner surface of the main body 11 come into strong contact with each other, and the shape of the first hollow portion 12A of the first insertion piece 12 deforms to fit the shape of the portion of the choke 20.
Then, the frictional force increases due to the reaction force generated when the first hollow portion 12A of the first insertion piece 12 is pressed against a part of the choke 20, suppressing the rotation of the choke 20.

As a result, the choke 20 naturally rotates to the left, preventing the first insertion piece 12 from being pushed out of the main body 11 until it reaches a position where it is possible to release the restriction on the movement of the choke 20 in the same direction as the extension of the main body 11.

On the other hand, a part of the operating pipe 21, i.e., the upper end part, is placed in a space formed inside the main body part 11 through the second tubular body opening part 11B of the main body part 11 provided in the holder 10 of the present invention.
At this time, one end of the second insertion piece 13 is slightly inserted into the second side opening 11D, and the second insertion piece 13 is hardly inserted into the second side opening 11D.

Then, with a portion of the operating pipe 21 disposed in the space inside the main body 11, the second insertion piece 13 is moved in the second insertion direction 15 and inserted into the second side opening 11D.
At this time, the second insertion piece 13 enters into the gap formed between a part of the operating pipe 21 arranged in the internal space of the main body portion 11 and the inner surface of the main body portion 11, and the wedge action of the second insertion piece 13 prevents the operating pipe 21 from moving in the same direction as the extension of the main body portion 11.

Also, as is clear from FIG. 4B, the first insertion direction 14 when the first insertion piece 12 is inserted into the first side opening 11C and the second insertion direction 15 when the second insertion piece 13 is inserted into the second side opening 11D are opposite to each other.
It should be noted that the insertion directions of the first and second insertion pieces 12 and 13 are merely examples and are not limited thereto. For example, the insertion directions of the first and second insertion pieces 12 and 13 may be the same.

In addition, since the surface roughness of one side of the second insertion piece 13 is greater than the surface roughness of the other side of the second insertion piece 13, and the surface roughness of the inner surface of the main body 11 is approximately the same as the surface roughness of the other side of the second insertion piece 13, the second insertion piece 13 can be further pulled into the gap between the inner surface of the main body 11 and a part of the operation pipe 21 by rotating the operation pipe 21 to the left without inserting the second insertion piece 13 forcefully.

At this time, the second hollow portion 13A provided on one end of the second insertion piece 13 is pinched and crushed between a part of the operating pipe 21 and the inner surface of the main body 11, making it easier for the second hollow portion 13A of the second insertion piece 13 to enter the gap formed between the inner surface of the main body 11 and a part of the operating pipe 21.

As a result, the operating pipe 21 can be prevented from moving more stably in the same direction as the main body 11 extends.

In addition, the second insertion piece 13 is curved in a clothoid curve, and the second hollow portion 13A of the second insertion piece 13 is curved in an arc shape. The curvature of the second hollow portion 13A is greater than the curvature of the second solid portion 13B, so that the second hollow portion 13A of the second insertion piece 13, a portion of the operating pipe 21, and the inner surface of the main body 11 come into strong contact with each other, and the shape of the second hollow portion 13A of the second insertion piece 13 deforms to fit the shape of the portion of the operating pipe 21.
Then, the frictional force increases due to the reaction force generated when the second hollow portion 13A of the second insertion piece 13 is pressed against a part of the operation pipe 21, suppressing the rotation of the operation pipe 21.

As a result, the operating pipe 21 naturally rotates to the right, preventing the second insertion piece 13 from being pushed out of the main body 11 until it reaches a position where it is possible to release the restriction on the operation pipe 21 moving in the same direction as the main body 11 extends.

In addition, the first insertion direction 14 when the first insertion piece 12 is inserted into the first side opening 11C and the second insertion direction 15 when the second insertion piece 13 is inserted into the second side opening 11D are opposite to each other, so that the choke 20 can be grasped, for example, with the left hand and the operating pipe 21 can be grasped, for example, with the right hand, and rotated in opposite directions to each other, so that the first insertion piece 12 and the second insertion piece 13 can be pulled into the inside of the main body 11 to a position where the movement of the choke 20 and the operating pipe 21 is inhibited in the same direction as the main body 11 extends, or the first insertion piece 12 and the second insertion piece 13 can be pushed out of the main body 11 to a position where the inhibition of the movement of the choke 20 and the operating pipe 21 is released.

In addition, the example shown in Figures 4A and 4B is an example in which holder 10 of the present invention holds two tubular bodies, namely, choke 20 and operating pipe 21, but it goes without saying that holder 10 of the present invention can hold a single tubular body.
In other words, a portion of one tubular body is positioned in the internal space of the main body 11, and one tubular body protrudes from the main body 11 through the first tubular body opening 11A and the second tubular body opening 11B of the main body 11, and the holder 10 of the present invention can hold one tubular body by means of the first insert piece 12 and the second insert piece 13.

In addition, when the holder 10 of the present invention holds one tubular body, the first insert piece 12 and the second insert piece 13 can be removed from the gap between a part of the tubular body and the inner surface of the main body 11, allowing the tubular body to move within the internal space of the main body 11, thereby changing the position of the main body 11 relative to the tubular body.

In addition, since one tubular body is held by two insert pieces, the first insert piece 12 and the second insert piece 13, which have different insertion directions, the tubular body is less likely to be released than when held by a single insert piece.

Figure 6 is a schematic perspective view showing an example of a main body and an insertion piece provided in a holder according to a second embodiment of the present invention.

A holder 30 according to a second embodiment of the present invention shown in FIG.
The main body 31 is made up of a first main body portion 31A and a second main body portion 31B.
Moreover, the first body constituent part 31A and the second body constituent part 31B are configured so as to be connectable to and separable from each other.
Furthermore, any connecting structure may be used as long as the first main body component 31A and the second main body component 31B can be connected and separated, and for example, a connecting structure using magnetic force or a connecting structure using unevenness can be adopted.

In addition, the main body 31, i.e., the first main body component 31A and the second main body component 31B, are made of resin, but they can also be made of metal or wood, and there is of course no restriction on the material of the main body 31 (the first main body component 31A and the second main body component 31B).

Further, the main body 31 formed by joining the first main body constituent portion 31A and the second main body constituent portion 31B to each other extends in a predetermined direction, and a space is formed inside the main body 31.
The space formed inside the main body 31 is a space in which at least a part of a tubular body such as a pipe or a cylindrical choke can be placed.

That is, the cross-sectional shape of the main body 31 in a direction substantially perpendicular to the direction in which the main body 31 extends is substantially circular, and the inner surface of the main body 31 is curved.
In other words, the main body portion 31 can be separated into a first main body constituent portion 31A and a second main body constituent portion 31B so as to be detachable in the bending direction.

In addition, a first tubular body opening 31C is formed at one end of the main body 31 in the extension direction, and a second tubular body opening 31D is formed at the other end of the main body 31 opposite the end at which the first tubular body opening 31C is formed.

Furthermore, the first tubular body opening 31C and the second tubular body opening 31D communicate the space formed inside the main body portion 31 with the outside of the main body portion 31.

The main body 31 is formed by joining the first main body component 31A and the second main body component 31B together, so that both ends of the first main body component 31A and both ends of the second main body component are each approximately semicircular.

As shown in FIG. 6, the first main body portion 31A is formed with a side opening 31E.
Further, the side opening 31E is open and communicates the internal space of the main body 31 with the outside of the main body 31 .

The main body 31 also has an attachment portion 33 to which another member can be detachably attached.
That is, as shown in FIG. 6, a mounting portion 33 is provided on the outer surface of the second main body portion 31B.
The example shown in Figure 6 is an example of attaching a camera 36 as a separate member, but the separate member that can be attached to the main body 31 is not limited to a camera, and for example, a sound-collecting microphone or a blackboard can also be attached.

One end of an arm portion 35 extending in a fixed direction is attached to the camera 36 .
The arm portion 35 is plastically deformable, and can point the camera 36 in various directions and maintain that state.

An insertion portion 34 is attached to the other end of the arm portion 35 opposite the end attached to the camera 36 .
The insertion portion 34 can be detachably inserted into the attachment portion 33 provided on the main body 31, i.e., the second main body constituent portion 31B.

Therefore, the camera 36 can be attached to the main body 31 of the holder 30 of the second embodiment of the present invention via the insertion portion 34 and the arm portion 35.

In addition, the mounting portion 33 does not necessarily have to have an insertion hole structure as shown in FIG. 6, so long as it is possible to detachably attach other members. For example, it may have a flat protruding piece structure, and the protruding piece may be clamped and secured with a screw.

In addition, if a separate member such as a camera 36 can be detachably attached to the attachment portion 33 of the main body portion 31, it is not necessary to use the arm portion 35 or the insertion portion 34, and the separate member such as the camera 36 can be attached directly to the attachment portion 33.

The retainer 30 of the second embodiment of the present invention also includes an insert piece 32 .
The insert piece 32 extends in one direction.
Further, although the insert piece 32 is made of resin, it may also be made of metal or wood, and the material of the insert piece 32 is of course not limited.

Further, the insertion piece 32 is curved in the same direction as the direction in which the insertion piece 32 extends.
Moreover, the insertion piece 32 is curved with one surface facing inward.

The insertion piece 32 also has a protrusion 32A.
The protrusion 32A is provided on one end side of the other surface of the insertion piece 32 so as to protrude in the opposite direction from the one surface.

The structure of the insert piece 32 is the same as the structure of the first insert piece 12 and the second insert piece 13 of the retainer 10 of the first embodiment of the present invention, so a detailed description will be omitted.

Figure 7A is a schematic diagram showing an example of how a camera is attached to an operating pipe having a choke removably attached to one end using a holder according to a second embodiment of the present invention, and Figure 7B is a schematic diagram showing an example of how a camera is attached to an operating pipe having a choke removably attached to one end using a holder according to a second embodiment of the present invention to capture an image of a structure.

The holder 10 of the first embodiment of the present invention shown in Figures 7A and 7B is in a state where it holds the chalk 20 and the operating pipe 21, but this state is essentially the same as an inspection tool for marking work in which the chalk 20 is removably attached to the tip of the operating pipe 21.

As shown in FIG. 7A, the cross beam 40 of the bridge is marked with chalk 20, and in order to perform imaging work in that state, the operating pipe 21 is sandwiched between the first main body component 31A and the second main body component 31B to which the camera 36 is attached, which are provided in the holder 30 of the second embodiment of the present invention.

The first body component 31A and the second body component 31B having a camera 36 attached thereto are joined together with the operating pipe 21 sandwiched between them, and further, the insertion piece 32 is inserted into a side opening 31E formed in the first body component 31A to prevent the operating pipe 21 from moving in the same direction as the extension direction of the main body 31 (the first body component 31A and the second body component 31B) of the holder 30 of the present invention.
That is, the camera 36 is attached to the operation pipe 21 via the holder 30 of the present invention.

Then, as shown in Figure 7B, the marked area of the cross beam 40 is imaged by the camera 36.

In addition, Figures 7A and 7B show the state in which marking is performed with chalk 20 on the cross beam 40 of a bridge where tapping inspection work has been performed using a tapping rod, for example, but tapping inspection work can also be performed by using the holder 10 of the present invention to hold the operating pipe of the tapping rod instead of the chalk 20.

Furthermore, a sound collecting microphone or a blackboard can be attached to the operating pipe 21 via the holder 30 of the present invention.

FIG. 8 is a schematic diagram showing an example of a substantially T-shaped main body portion of a holder to which the present invention is applied.
In FIG. 8, the insertion piece is omitted.

A holder 50 of the present invention shown in FIG. 8 includes a body portion 51 having a substantially T-shape.
Here, the main body 51 is composed of a first main body 51A and a second main body 51B, and the first main body 51A and the second main body 51B are molded integrally with each other.

The first main body portion 51A extends in a predetermined direction, and a space is formed inside the first main body portion 51A.
The second body portion 51B extends in a direction substantially perpendicular to the direction in which the first body portion 51A extends, and a space is formed inside the second body portion 51B.

The second body portion 51B is joined to a substantially central portion of the first body portion 51A.
Further, the internal space of the first body portion 51A and the internal space of the second body portion 51B are in communication with each other.

The space formed inside the first main body portion 51A and the space formed inside the second main body portion 51B are spaces in which at least a portion of a tubular body such as a pipe can be disposed.
That is, the cross-sectional shape of the first main body portion 51A in a direction substantially perpendicular to the extension direction of the first main body portion 51A is substantially circular, and the inner surface of the first main body portion 51A is curved.
The cross-sectional shape of the second main body portion 51B in a direction substantially perpendicular to the extension direction of the second main body portion 51B is also substantially circular, and the inner surface of the second main body portion 51B is curved.

In addition, the main body 51 (first main body 51A and second main body 51B) is made of resin, but it can also be made of metal or wood, and there is of course no restriction on the material of the main body 51.

In addition, a first tubular body opening 51C is formed at one end in the extension direction of the first main body portion 51A, and a second tubular body opening 51D is formed at the other end of the first main body portion 51A opposite the end at which the first tubular body opening 51C is formed.
Further, the first tubular body opening 51C and the second tubular body opening 51D communicate the space formed inside the first main body portion 51A with the outside of the first main body portion 51A.

Further, a third tubular body opening 51E is formed at one end in the extending direction of the second main body portion 51B.
In addition, the internal space of the first main body portion 51A and the internal space of the second main body portion 51B are connected to each other, which means that an opening for a tubular body is also formed at the other end of the second main body portion 51B, opposite the end at which the opening for the third tubular body 51E is formed.

The third tubular body opening 51E and the other end tubular body opening connect the space formed inside the second main body portion 51B to the outside of the second main body portion 51B.

As shown in FIG. 8, a first side opening 51F and a second side opening 51G are formed in the extending direction of the first main body portion 51A.
The first side opening 51F and the second side opening 51G are open and communicate the internal space of the first main body 51A with the outside of the first main body 51A.
In addition, the first side opening 51F and the second side opening 51G are formed on the side surface of the first main body portion 51A, and the first side opening 51F and the second side opening 51G open in a direction approximately perpendicular to the direction in which the first tubular body opening 51C or the second tubular body opening 51D opens.

As shown in FIG. 8, the second body portion 51B is formed with a third side opening 51H.
Further, the third side opening 51H is open and communicates the internal space of the second main body portion 51B with the outside of the second main body portion 51B.
In addition, the third side opening 51H is formed on the side surface of the second main body portion 51B, and the third side opening 51H opens in a direction approximately perpendicular to the direction in which the third tubular body opening 51E opens.

FIG. 9 is a schematic diagram showing an example of a substantially Y-shaped main body portion of a holder to which the present invention is applied.
In FIG. 9, the insertion piece is omitted.

A holder 60 of the present invention shown in FIG. 9 includes a body portion 61 having a substantially Y-shape.
Here, the main body 61 is composed of a first main body 61A and a second main body 61B, and the first main body 61A and the second main body 61B are molded integrally with each other.

The first main body portion 61A extends in a predetermined direction, bending at a substantially right angle, and a space is formed inside the first main body portion 61A.
Further, the second body portion 61B extends in a direction intersecting the direction in which the first body portion 61A extends, and a space is formed inside the second body portion 61B.

As shown in FIG. 9, the second body portion 61B is joined to a convexly curved portion in a substantially central portion of the first body portion 61A.
Further, the internal space of the first main body portion 61A and the internal space of the second main body portion 61B are in communication with each other.

The space formed inside the first main body portion 61A and the space formed inside the second main body portion 61B are spaces in which at least a portion of a tubular body such as a pipe can be disposed.
That is, the cross-sectional shape of the first main body 61A in a direction substantially perpendicular to the extension direction of the first main body 61A is substantially circular, and the inner surface of the first main body 61A is curved.
The cross-sectional shape of the second main body 61B in a direction substantially perpendicular to the extension direction of the second main body 61B is substantially circular, and the inner surface of the second main body 61B is curved.

In addition, the main body 61 (first main body 61A and second main body 61B) is made of resin, but it can also be made of metal or wood, and there is of course no restriction on the material of the main body 61.

In addition, a first tubular body opening 61C is formed at one end in the extension direction of the first main body portion 61A, and a second tubular body opening 61D is formed at the other end of the first main body portion 61A opposite the end at which the first tubular body opening 61C is formed.
Further, the first tubular body opening 61C and the second tubular body opening 61D communicate the space formed inside the first main body portion 61A with the outside of the first main body portion 61A.

Further, a third tubular body opening 61E is formed at one end in the extending direction of the second main body portion 61B.
In addition, the internal space of the first main body portion 61A and the internal space of the second main body portion 61B are connected to each other, which means that an opening for a tubular body is also formed at the other end of the second main body portion 61B, opposite the end at which the opening for the third tubular body 61E is formed.

The third tubular body opening 61E and the other end tubular body opening connect the space formed inside the second main body portion 61B to the outside of the second main body portion 61B.

As shown in FIG. 9, a first side opening 61F and a second side opening 61G are formed in the direction in which the first main body portion 61A curves and extends.
The first side opening 61F and the second side opening 61G are open and communicate the internal space of the first main body portion 61A with the outside of the first main body portion 61A.
In addition, the first side opening 61F and the second side opening 61G are formed on the side surface of the first main body portion 61A, and the first side opening 61F and the second side opening 61G open in a direction approximately perpendicular to the direction in which the first tubular body opening 61C or the second tubular body opening 61D opens.

As shown in FIG. 9, the second body portion 61B is formed with a third side opening 61H.
Further, the third side opening 61H is open and communicates the internal space of the second main body portion 61B with the outside of the second main body portion 61B.
In addition, the third side opening 61H is formed on the side surface of the second main body portion 61B, and the third side opening 61H opens in a direction approximately perpendicular to the direction in which the third tubular body opening 61E opens.

FIG. 10 is a schematic diagram showing a modification of the main body provided in the holder of the first embodiment to which the present invention is applied.
In FIG. 10, the insertion piece is omitted.

A holder 70 of the present invention shown in FIG. 10 includes a body portion 71 that is substantially L-shaped.
That is, the main body 71 extends in a predetermined direction while bending at a substantially right angle, and a space is formed inside the main body 71 .

The space formed inside the main body 71 is a space in which at least a part of a tubular body such as a pipe can be disposed.
That is, the cross-sectional shape of the main body 71 in a direction substantially perpendicular to the direction in which the main body 71 extends is substantially circular, and the inner surface of the main body 71 is curved.

Additionally, although the main body 71 is made of resin, it can also be made of metal or wood, and there is of course no restriction on the material of the main body 71.

In addition, a first tubular body opening 71A is formed at one end in the direction in which the main body portion 71 extends, and a second tubular body opening 71B is formed at the other end of the main body portion 71 opposite the end at which the first tubular body opening 71A is formed.
Further, the first tubular body opening 71A and the second tubular body opening 71B communicate the space formed inside the main body portion 71 with the outside of the main body portion 71 .

As shown in FIG. 10, a first side opening 71C and a second side opening 71D are formed in the direction in which the main body 71 curves and extends.
Further, the first side opening 71C and the second side opening 71D are open and communicate the internal space of the main body 71 with the outside of the main body 71 .
In addition, the first side opening 71C and the second side opening 71D are formed on the side surface of the main body portion 71, and the first side opening 71C and the second side opening 71D open in a direction approximately perpendicular to the direction in which the first tubular body opening 71A or the second tubular body opening 71B opens.

As described above, the main body 11 of the holder 10 of the present invention has a first tubular body opening 11A and a second tubular body opening 11B formed therein, so that a part of the choke 20 and a part of the operating pipe 21 can be placed in the internal space of the main body 11 through the first tubular body opening 11A and the second tubular body opening 11B.

In addition, since the retainer 10 of the present invention is equipped with a first insertion piece 12, the first insertion piece 12 can enter into the gap between a part of the choke 20 arranged in the internal space of the main body 11 and the inner surface of the main body 11, thereby preventing the choke 20 from moving in the same direction as the extension of the main body 11.
In addition, since the holder 10 of the present invention is equipped with a second insertion piece 13, the second insertion piece 13 can enter into the gap between a part of the operating pipe 21 arranged in the internal space of the main body portion 11 and the inner surface of the main body portion 11, thereby preventing the operating pipe 21 from moving in the same direction as the extension of the main body portion 11.

Therefore, if the choke 20 or the operating pipe 21 is to be moved in the same direction as the main body 11 extends, the first insertion piece 12 and the second insertion piece 13 can be removed from the gap, and the holder 10 of the present invention can detachably hold tubular bodies such as the choke 20 and the operating pipe 21.

In addition, the first insert piece 12 and the second insert piece 13 can be removed from the gap and then from the first side opening 11C and the second side opening 11D to separate the chalk 20, the operating pipe 21, the main body 11, and the first insert piece 12 and the second insert piece 13. This makes it possible, for example, to clean the inside of the main body 11, replace the first insert piece 12 or the second insert piece 13 with a new insert piece, replace the chalk 20 with a new chalk of a different color, or replace the operating pipe 21 with a new operating pipe.

Further, although the holder 10 of the first embodiment and the holder 30 of the second embodiment of the present invention are used in an inspection tool, the present invention is not necessarily limited to this.
For example, the holder of the present invention can be used in a window cleaning tool to detachably hold the holder part and operating pipe of a component called a washer or shampoo, or to detachably hold the holder part and operating pipe of a component called a squeegee.
For example, the holder of the present invention can be used for the poles of a camping tent to detachably hold the poles together and adjust the length of the poles.

LIST OF SYMBOLS 10 Holder 11 Main body 11A First tubular body opening 11B Second tubular body opening 11C First side opening 11D Second side opening 12 First insertion piece 12A First hollow portion 12B First solid portion 12C First protrusion 13 Second insertion piece 13A Second hollow portion 13B Second solid portion 13C Second protrusion 14 First insertion direction 15 Second insertion direction 20 Choke 21 Operation pipe 30 Holder 31 Main body 31A First main body component 31B Second main body component 31C First tubular body opening 31D Second tubular body opening 31E Side opening 32 Insertion piece 32A Protrusion 33 Mounting portion 34 Insertion portion 35 Arm portion 36 Camera 40 Cross beam 50 Holder 51 Main body 51A First main body 51B Second main body 51C First tubular body opening 51D Second tubular body opening 51E Third tubular body opening 51F First side opening 51G Second side opening 51H Third side opening 60 Holder 61 Main body 61A First main body 61B Second main body 61C First tubular body opening 61D Second tubular body opening 61E Third tubular body opening 61F First side opening 61G Second side opening 61H Third side opening 70 Holder 71 Main body 71A First tubular body opening 71B Second tubular body opening 71C First side opening 71D Second side opening

Claims (5)

a main body portion having a curved inner surface, the main body portion having a space formed therein in which at least a part of the tubular body can be disposed, the main body portion extending in a predetermined direction, the main body portion having an opening for the tubular body at least at one end in the predetermined direction, the opening communicating the space with the outside, the opening opening being open on a side surface and communicating the space with the outside,
the insertion piece extends in a curved direction along the inner surface of the main body, the thickness of which gradually increases from one end of the extension direction to the other end opposite the one end, and is insertable from the one end to the side opening in the curved direction along the inner surface of the main body ;
The distance from the center of the main body to the inner surface of the main body in a predetermined range in the curved direction from one edge of the side opening of the main body is gradually shortened.
Holder. a main body portion having a curved inner surface, the main body portion having a space formed therein in which at least a part of the tubular body can be disposed, the main body portion extending in a predetermined direction, the main body portion having an opening for the tubular body at least at one end in the predetermined direction, the opening communicating the space with the outside, the opening opening being open on a side surface and communicating the space with the outside,
the insertion piece extends in a curved direction along the inner surface of the main body, the thickness of which gradually increases from one end of the extension direction to the other end opposite the one end, and is insertable from the one end to the side opening in the curved direction along the inner surface of the main body;
The insertion piece is curved with the one surface inward,
a surface roughness of the one surface of the insert piece is greater than a surface roughness of the other surface of the insert piece;
A retainer , wherein the surface roughness of the inner surface of the main body is approximately the same as the surface roughness of the other surface of the insertion piece . a main body portion having a curved inner surface, the main body portion having a space formed therein in which at least a part of the tubular body can be disposed, the main body portion extending in a predetermined direction, the main body portion having an opening for the tubular body at least at one end in the predetermined direction, the opening communicating the space with the outside, the opening opening being open on a side surface and communicating the space with the outside,
the insertion piece extends in a curved direction along the inner surface of the main body, the thickness of which gradually increases from one end of the extension direction to the other end opposite the one end, and is insertable from the one end to the side opening in the curved direction along the inner surface of the main body;
The insert piece is curved in a clothoid curve, the portion on the one end side of the insert piece is curved in an arc shape, and the curvature of the portion on the one end side is greater than the curvature of the other portion of the insert piece. a main body portion having a curved inner surface, the main body portion having a space formed therein in which at least a part of the tubular body can be disposed, the main body portion extending in a predetermined direction, the main body portion having an opening for the tubular body at least at one end in the predetermined direction, the opening communicating the space with the outside, the opening opening being open on a side surface and communicating the space with the outside,
the insertion piece extends in a curved direction along the inner surface of the main body, the thickness of which gradually increases from one end of the extension direction to the other end opposite the one end, and is insertable from the one end to the side opening in the curved direction along the inner surface of the main body;
A retainer in which the portion on the one end side of the insert piece is a hollow portion having an internal space formed therein, and the other portion of the insert piece is a solid portion having no internal space formed therein. 5. The retainer of claim 4, wherein the insert is curved in a clothoid curve, the hollow portion of the insert is curved in an arc, and the radius of curvature of the hollow portion is greater than the radius of curvature of the solid portion.

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