Penetration tool

Abstract

To provide a penetration tool capable of being readily secured even if a through hole formed in a wall structure is large in dimension.SOLUTION: A penetration tool 1 is installed in a through hole WH penetrating a wall body W. The penetration tool 1 comprises a cylindrical body 2 and a support member 3. The cylindrical body 2 is arranged in the through hole WH along an axial direction A of the through hole WH and is deformable in a radial direction D. The support member 3 is at least partially disposed in a hollow portion 22A of the cylindrical body 2 and supports the cylindrical body 2 from a radially inner side D2. The support member 3 can support the cylindrical body 2 at a plurality of positions in the radial direction D, and deforms the cylindrical body 2 in the radial direction D by changing a support position with respect to the cylindrical body 2.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a penetrator to be installed in a through hole that penetrates a wall body. [Background technology]

[0002] When piping such as hoses, pipes, and cables is arranged across a wall from one space to another, the piping is sometimes arranged through a through-hole formed in the wall. One example of such piping is the piping connecting the indoor unit and outdoor unit of an air conditioner. Specifically, the indoor unit is often arranged inside a residence, building, or other structure (such as a building), and the outdoor unit is often arranged outside the building. The indoor unit and outdoor unit are connected by a piping to circulate a refrigerant between them. Such piping is arranged across the interior and exterior of the building, passing through a through-hole formed in the building's wall.

[0003] The pipes are often not directly placed in the through-holes formed in the wall. Instead, the pipes are often placed in the through-holes with a portion of the pipe housed in a penetrating tool installed in the through-hole. Such a penetrating tool is fixed to the through-hole in the wall to stably pass the pipes through the through-hole.

[0004] For example, Japanese Patent Application Laid-Open No. 2017-187053 (Patent Document 1) discloses a penetrator (sleeve 1) that is installed in a through hole formed in a wall body. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-187053 Summary of the Invention [Problem to be solved by the invention]

[0006] However, with the penetrator (sleeve 1) described in Patent Document 1, if the dimensions of the through hole formed in the wall are larger than the dimensions of the penetrator (sleeve 1), it is necessary to fill the gap that occurs between the tubular body (cylindrical portion 100) and the through hole with a gap filler 200. In other words, it may be time-consuming to fix the penetrator (sleeve 1) in the through hole. For this reason, it is desired to realize a penetrator that can be easily fixed even if the dimensions of the through hole formed in the wall are large. [Means for solving the problem]

[0007] The penetrating device of the present invention is a penetrating device installed in a through hole that penetrates a wall body, and comprises a cylindrical body that is arranged in the through hole along the axial direction of the through hole and is freely deformable in the radial direction, and a support body that is at least partially arranged in the hollow portion of the cylindrical body and supports the cylindrical body from the radial inside, and the support body is capable of supporting the cylindrical body at multiple positions in the radial direction, and the cylindrical body is deformed in the radial direction by changing the support position relative to the cylindrical body.

[0008] According to this configuration, even if the radial dimension of the through hole is larger than the radial dimension of the outer periphery of the cylindrical body, the support body can deform the cylindrical body radially outward, thereby bringing the outer periphery of the cylindrical body into close contact with the wall body and fixing the cylindrical body to the wall. In other words, since the dimension of the cylindrical body can be adjusted by the support body after the cylindrical body is placed in the through hole, fixing the cylindrical body to the wall body is easy even for a through hole whose radial dimension is larger than the outer periphery of the cylindrical body.

[0009] Preferred embodiments of the present invention will be described below, but the scope of the present invention is not limited to the preferred embodiments described below.

[0010] In one embodiment, the support member is rotatable about an axis extending along the axial direction, and the support position is preferably adjusted to be radially outward as the support member rotates toward one side.

[0011] According to this configuration, the radial dimension of the cylindrical body can be increased simply by rotating the support body, making it easy to fix the cylindrical body to the wall body.

[0012] In one embodiment, the support body can be entirely accommodated within the hollow portion of the cylindrical body.

[0013] According to this configuration, the support protruding from the wall in the axial direction can be rotated and then housed in the hollow portion of the cylindrical body. In other words, after adjusting the dimensions of the cylindrical body, the support no longer protrudes from the wall, eliminating the need to adjust the dimensions of the support by cutting the protruding support from the wall, for example.

[0014] In one embodiment, the cylindrical body includes a plurality of divided bodies divided in the circumferential direction.

[0015] According to this configuration, the segments are spaced apart from each other, which allows the cylindrical body to have a larger radial dimension. At this time, the segments can be deformed radially outward in a balanced manner, allowing the outer periphery of the cylindrical body to be tightly attached to the wall body.

[0016] In one aspect, the pump further includes a seal member that fills a radial gap between the wall member and the cylindrical member, The seal body holds the plurality of divided bodies together from the radially outer side.

[0017] According to this configuration, the seal body can reliably seal the gap between the wall body and the cylindrical body, and can also prevent the multiple divided bodies from separating.

[0018] In one aspect, the support further includes a rotation restriction mechanism that allows rotation toward one side of the support and restricts rotation toward the other side of the support.

[0019] With this configuration, the radial dimension of the cylindrical body can be easily adjusted by simply rotating the support in one direction. After that, the rotation restriction mechanism restricts rotation of the support in the opposite direction, so the adjusted cylindrical body dimension is maintained appropriately.

[0020] In one embodiment, the rotation restriction mechanism includes a ratchet structure having a pawl protruding radially inward from the inner periphery of the cylindrical body, and a plurality of teeth provided on the outer periphery of the support body, each of which engages with the pawl and whose engagement position with respect to the pawl gradually becomes radially outward.

[0021] According to this configuration, the structure of the rotation restriction mechanism is simplified.

[0022] In one embodiment, the radial position of the pressed portion of the cylindrical body that is pressed by the support body changes from one axial side to the other axial side.

[0023] According to this configuration, even if the radial dimension of the through hole varies in the axial direction, the outer peripheral surface of the cylindrical body can be brought into appropriate tight contact with the wall body.

[0024] In addition, in view of the above, the technical features of the penetrating device are also applicable to a method of installing a penetrating device in a through hole that penetrates a wall, and therefore, the present invention can also claim rights to such a method.

[0025] In this case, the characteristic configuration of the method for installing a penetrating device in a through hole that penetrates a wall body is that it comprises the steps of: placing a cylindrical body that can be deformed radially in the through hole along the axial direction of the through hole; placing at least a part of a support body that can support the cylindrical body at multiple radial positions in the hollow part of the cylindrical body; and deforming the cylindrical body radially by changing the support position of the support body relative to the cylindrical body.

[0026] According to this method, even if the radial dimension of the through hole is larger than the radial dimension of the outer periphery of the cylindrical body, the support body can deform the cylindrical body radially outward, thereby tightly adhering the outer periphery of the cylindrical body to the wall body and fixing the cylindrical body to the wall body. In other words, after the cylindrical body is placed in the through hole, the dimension of the cylindrical body can be adjusted with the support body, making it easy to fix the cylindrical body to the wall body.

[0027] In one aspect, in the step of radially deforming the cylindrical body, as the support body is rotated to one side around an axis along the axial direction, the support position of the support body relative to the cylindrical body is changed to be radially outward.

[0028] According to this method, the radial dimension of the cylindrical body can be increased simply by rotating the support, making it easy to fix the wall of the cylindrical body.

[0029] In one aspect, the method further includes, after the step of deforming the cylindrical body in the radial direction, a step of pushing the support body in the axial direction to accommodate the entire support body in the hollow portion of the cylindrical body.

[0030] According to this method, the support protruding from the wall in the axial direction can be rotated and then housed in the hollow portion of the cylindrical body. In other words, after adjusting the dimensions of the cylindrical body, the support no longer protrudes from the wall, eliminating the need to adjust the dimensions of the support by cutting the protruding support from the wall, for example.

[0031] Further features and advantages of the present invention will become more apparent from the following description of exemplary and non-limiting embodiments, which is given with reference to the drawings. [Brief explanation of the drawings]

[0032] [Figure 1] FIG. 1 is a perspective view showing a penetrating tool according to an embodiment; [Figure 2] FIG. 2 is an exploded perspective view of the penetrator shown in FIG. 1; [Figure 3] Four-sided view of the penetrator shown in Figure 1 [Figure 4] FIG. 2 is a cross-sectional view showing the state in which the penetrator shown in FIG. 1 is inserted into the through-hole of the wall body. [Figure 5] 5 is a perspective view of the penetrator shown in FIG. [Figure 6] The split body shown in Figure 4 is deformed radially outward. [Figure 7] FIG. 6 is a perspective view showing a state in which the penetrator shown in FIG. 5 is fixed to a wall body. DETAILED DESCRIPTION OF THE INVENTION

[0033] 1. Overview of the penetrator 1 of the embodiment As shown in Fig. 1, the penetration device 1 is used to arrange pipes across a space in a wall W that separates spaces, spanning from one side of the space to the other. Examples of the wall W include a wall that separates the inside and outside of a building, a wall that separates rooms within a building, and other partitions. The wall W can have a single-layer structure or a multi-layer structure.

[0034] A through hole WH is formed in the wall W to arrange pipes across the wall W. A penetrating device 1 is placed in the through hole WH. The pipes are arranged from one space on one side of the wall W to the other space on the other side, with a portion of the pipes arranged inside the penetrating device 1. In the following explanation, the structure of the penetrating device 1 will be explained with the direction in which the through hole WH extends as an axial direction A, one side of the axial direction A as a first axial side A1, and the other side of the axial direction A as a second axial side A2.

[0035] 2. Structure of the penetrator 1 of the embodiment The structure of the penetrator 1 of the embodiment will be described with reference to the drawings. As shown in Fig. 1, the penetrator 1 is placed in a through hole WH that penetrates a wall W. The penetrator 1 placed in the through hole WH is fixed to the wall W.

[0036] 1 to 4, the penetrator 1 includes a cylindrical body 2 installed in the through hole WH, a support body 3 attached to the inside of the cylindrical body 2, a rotation restriction mechanism 4 constituted by a part of the cylindrical body 2 and a part of the support body 3, and a seal body 5 attached to the outside of the cylindrical body 2. The penetrator 1 is fixed to the wall body W by being brought into close contact with the inner surface of the through hole WH.

[0037] The cylindrical body 2 is a cylindrical member that is disposed in the through hole WH along the axial direction A. In addition, the cylindrical body 2 is deformable in a radial direction D that intersects with its axis. In this embodiment, the cylindrical body 2 includes a cylindrical portion 21 that deforms in the radial direction D, a flange portion 22 formed on the cylindrical portion 21, and a pressed portion 24 to which a pressing force is applied to deform the cylindrical portion 21 in the radial direction D.

[0038] In the following description, the dimension of each member in the radial direction D will be referred to as the "diameter." One side of the radial direction D, which is the side of the hollow portion 22A relative to the outer periphery of the cylindrical body 2, will be referred to as the "radially inner side D2," and the diameter of the radially inner side D2 will be referred to as the "inner diameter." The other side of the radial direction D will be referred to as the "radially outer side D1," and the diameter of the radially outer side D1 will be referred to as the "outer diameter." In addition, the direction going around the axial direction A will be referred to as the "circumferential direction C."

[0039] The cylindrical portion 21 is a cylindrical portion of the cylindrical body 2. The cylindrical portion 21 is, for example, a cylinder, a cylinder with a polygonal cross section, or a cylinder with a cross section of another shape. The outer diameter of the cylindrical portion 21 is equal to or smaller than the inner diameter of the through hole WH. In this embodiment, the cylindrical portion 21 is a cylinder with an outer diameter smaller than the inner diameter of the through hole WH. The cylindrical portion 21 is arranged in the through hole WH so that its axis is along the axial direction A.

[0040] The cylindrical portion 21 is deformed radially outward D1 by being pressed from the radially inner side D2. As a result, the outer periphery of the cylindrical portion 21 is pressed against the inner surface of the through-hole WH via the seal body 5. As a result, the cylindrical portion 2 (cylindrical portion 21) is fixed to the wall body W via the seal body 5. Hereinafter, this state will be simply referred to as "the cylindrical portion 2 (cylindrical portion 21) being fixed to the wall body W."

[0041] The outer shape of the cylindrical portion 21 in the radial direction D is preferably the same as the cross-sectional shape of the through hole WH. According to this configuration, when the cylindrical body 2 is deformed radially outward D1, the outer periphery of the cylindrical body 2 is evenly pressed against the inner surface of the through hole WH in the circumferential direction C. In addition, the length of the cylindrical body 2 in the axial direction A is preferably equal to or less than the thickness of the wall body W when the cylindrical body 2 is fixed to the wall body W. In the case of a multi-layered wall body W, the thickness of the wall body W is the sum of the thicknesses of the multiple layers (including the thickness of hollow portions, if any). According to this configuration, when the penetrator 1 is placed in the through hole WH, it is possible to prevent the penetrator 1 from protruding from the wall body W in the axial direction A. If the length of the cylindrical body 2 in the axial direction A is longer than the thickness of the wall body W, the length of the cylindrical portion 21 may be adjusted by cutting the cylindrical body 2 before or after fixing the cylindrical body 2 to the wall body W.

[0042] In this embodiment, the flange portion 22 extends radially outward D1 from the end of the cylindrical portion 21 in the axial direction A. In the example shown in FIGS. 1 to 3, the flange portion 22 is integral with the cylindrical portion 21. The flange portion 22 is used to position the cylindrical body 2 in the axial direction A when the cylindrical body 2 is disposed in the through hole WH. Specifically, the cylindrical body 2 is inserted into the through hole WH with the flange portion 22 disposed on the first axial side A1. The cylindrical body 2 inserted into the through hole WH abuts against the surface of the wall body W on the first axial side A1. This determines the position of the cylindrical body 2 in the axial direction A.

[0043] The cylindrical body 2 is preferably composed of a plurality of divided bodies 23. The plurality of divided bodies 23 are divided in the circumferential direction C. In this embodiment, the cylindrical portion 21 and the flange portion 22 are composed of a plurality of divided bodies 23. One divided body 23 can move freely relative to the other divided bodies 23 at least in the circumferential direction C.

[0044] In this embodiment, the multiple segments 23 are assembled in a state in which movement of adjacent segments 23 in the axial direction A and the radial direction D is restricted. For this reason, as illustrated in FIGS. 1 and 2 , each segment 23 has a connecting portion 231 at both ends along the circumferential direction C for connecting the segments 23 to each other. In detail, the connecting portion 231 has a plurality of protruding portions 232 that protrude in the circumferential direction C and are arranged at intervals along the axial direction A, and a plurality of fitting portions 233. Each fitting portion 233 illustrated in FIG. 2 fits with one of the protruding portions 232, forming a space between a pair of protruding portions 232 arranged along the axial direction A. In addition, the protruding portion 232 and the fitting portion 233 are arranged such that the protruding portion 232 and the fitting portion 233 face each other when the connecting portions 231 of different segments 23 face each other. Therefore, when the connecting portions 231 of the different divided bodies 23 are brought into contact with each other, the protruding portions 232 of one divided body 23 fit into the fitting portions 233 of the other divided body 23 .

[0045] As shown in FIG. 4, the multiple segments 23 have a cylindrical shape when not pressed from the radially inward direction D2 (initial state). On the other hand, when the multiple segments 23 are pressed from the initial state toward the radially outward direction D1, they move toward the radially outward direction D1 as shown in FIG. 6. In this embodiment, since one segment 23 is restricted from moving relative to the other segments 23 in the axial direction A and the radial direction D, all of the segments 23 simultaneously move toward the radially outward direction D1. On the other hand, since one segment 23 can move relative to the other segments 23 in the circumferential direction C, the multiple segments 23 move apart in the circumferential direction C as they move toward the radially outward direction D1. By deforming the multiple segments 23 in the radial direction D in this manner, the multiple segments 23 can deform symmetrically around the axis while maintaining their connection with each other, i.e., so that the multiple segments 23 do not become completely separated. Therefore, the outer periphery of the cylindrical body 2 is evenly in close contact with the inner surface of the through hole WH in the circumferential direction C.

[0046] As shown in FIGS. 4 to 6 , the pressed portion 24 is a portion of the cylindrical body 2 that is pressed from the radially inner side D2. In this embodiment, the pressed portion 24 is formed on the inner circumferential portion of the cylindrical portion 21. When the pressed portion 24 is pressed, the position of the pressed portion 24 moves radially outward D1. As the position of the pressed portion 24 changes, the outer circumferential portion of the cylindrical portion 21 expands radially outward D1. The amount by which the outer circumferential portion of the cylindrical portion 21 expands radially outward D1 is approximately the same as the amount by which the pressed portion 24 expands radially outward D1. The pressed portion 24 is supported at the position where the outer circumferential portion of the cylindrical portion 21 expands radially outward D1, so that the cylindrical portion 21 is maintained in a state deformed radially outward D1. In this embodiment, the pressed portion 24 is pressed and supported by the support body 3. 1 to 6 are formed on all of the divided bodies 23. With this configuration, all of the divided bodies 23 can be pressed evenly.

[0047] At least a portion of the support body 3 is disposed in the hollow portion 22A of the cylindrical body 2. In addition, the support body 3 supports the cylindrical body 2 from the radially inner side D2. In this embodiment, the support body 3 is inserted into the wall body W from the first axial side A1 and disposed in the hollow portion 22A of the cylindrical body 2.

[0048] The support body 3 can support the cylindrical body 2 at multiple positions in the radial direction D, and by changing the support position relative to the cylindrical body 2, the cylindrical body 2 is deformed in the radial direction D. In this embodiment, the support body 3 has a pressing portion 432 on the outer circumferential portion 31, and this pressing portion 432 abuts against the pressed portion 24, so that the support body 3 presses and supports the cylindrical body 2 from the radially inner side D2. The outer circumferential portion 31 of the support body 3 illustrated in FIGS. 1 to 6 is inclined toward the circumferential direction C. Therefore, by changing the abutment position between the outer circumferential portion 31 of the support body 3 and the pressed portion 24 in the circumferential direction C, the position of the support body 3 in the radial direction D that supports the cylindrical body 2 can be changed.

[0049] As shown in Figures 4 to 6, the support body 3 is rotatable about a reference axis AX along the axial direction A. In this embodiment, the support body 3 is inserted into the hollow portion 22A of the cylindrical portion 21. In the hollow portion 22A of the cylindrical portion 21, the support body 3 rotates about the reference axis AX. In the following description, the direction in which the support body 3 rotates is referred to as a rotational direction R, one side of the rotational direction R is referred to as a first rotational direction side R1, and the other side of the rotational direction R is referred to as a second rotational direction side R2.

[0050] In this embodiment, the support 3 is an elongated structure that is smaller than the inner diameter of the cylindrical portion 21. The support 3 illustrated in Figures 1 to 6 is cylindrical. Since the cylindrical body 2 and the support 3 are not fixed to each other, the support 3 can rotate relative to the cylindrical body 2 around the reference axis AX.

[0051] As the support body 3 rotates toward the first side R1 in the rotation direction, the position at which the pressed portion 24 is supported is adjusted to be radially outward D1. In this embodiment, the outer circumferential portion 31 of the support body 3 supports the pressed portion 24. The outer circumferential portion 31 of the support body 3 illustrated in FIG. 4 has a shape that widens radially outward D1 as it moves toward the second side R2 in the rotation direction. Therefore, by rotating the support body 3 toward the first side R1 in the rotation direction, the position at which the pressed portion 24 is supported by the outer circumferential portion 31 of the support body 3 changes to be radially outward D1.

[0052] In this embodiment, the shape of the outer circumferential portion 31 of the support body 3 is rotationally symmetric about the reference axis AX in accordance with the number of segments 23. For example, if the cylindrical body 2 is divided into N segments 23 (N is a positive integer), the outer circumferential portion 31 of the support body 3 has a shape that gradually expands radially outward D1 within a range of (360 / N)° as it moves toward the second rotational direction side R2. As will be described in detail later, the segments 23 illustrated in FIG. 4 have a four-segment structure, and therefore the outer circumferential portion 31 of the support body 3 has a shape that gradually expands radially outward D1 within a range of 90° as it moves toward the second rotational direction side R2. In other words, the outer circumferential portion 31 of the support body 3 has a shape that resembles a combination of four ellipses when viewed in the axial direction A.

[0053] Preferably, at least a portion of the support body 3 on the second axial side A2 presses and supports the pressed portion 24. According to this configuration, the support body 3 is disposed in the hollow portion 22A of the cylindrical portion 21 with a portion of the support body 3 protruding toward the first axial side A1, and the position at which the pressed portion 24 is supported can be changed. Therefore, the user can rotate the support body 3 while grasping the portion protruding toward the first axial side A1 relative to the cylindrical body 2, which makes it easier to adjust the deformation of the cylindrical body 2 toward the radially outward direction D1.

[0054] More preferably, the support 3 can be entirely accommodated in the hollow portion 22A of the cylindrical body 2. In this embodiment, the dimension of the support 3 in the axial direction A is shorter than the dimension of the hollow portion 22A of the cylindrical body 2 in the axial direction A. In addition, the pressed portion 24 illustrated in FIGS. 1 to 4 is formed over the entirety in the axial direction A. Therefore, after the cylindrical body 2 is deformed in the radial direction D by the support 3, the entirety of the support 3 is accommodated in the hollow portion 22A of the cylindrical body 2, so that the support 3 can press and support the cylindrical body 2 over the entirety in the axial direction A. As a result, the cylindrical body 2 is more firmly adhered to the wall W.

[0055] The rotation restriction mechanism 4 allows rotation of the support body 3 toward a first side R1 in the rotation direction and restricts rotation of the support body 3 toward a second side R2 in the rotation direction. The rotation restriction mechanism 4 includes a ratchet structure 41. The ratchet structure 41 has a pawl 42 and a plurality of teeth 43. In this embodiment, the pawl 42 is formed on the cylindrical body 2, and the plurality of teeth 43 are formed on the support body 3.

[0056] The pawls 42 protrude radially inward D2 from the inner periphery of the cylindrical body 2. The plurality of teeth 43 are formed on the support body 3 so that each engages with the pawl 42 and the engagement position with respect to the pawl 42 gradually shifts radially outward D1. In this embodiment, the pawls 42 are provided on each divided body 23. When adjusting the outer diameter of the cylindrical body 2, the plurality of teeth 43 are positioned opposite the pawls 42. By engaging with the pawl 42, each tooth 43 abuts against the tip of the pawl 42 and supports the pawl 42. In this embodiment, the tip of the pawl 42 corresponds to the pressed portion 24.

[0057] In this embodiment, the multiple teeth 43 are arranged adjacent to each other in the rotational direction R. Each tooth 43 has a locking portion 431 facing the space on the second rotational direction side R2 and a pressing portion 432 formed along the circumferential direction C on the outer circumferential portion 31 of the support 3. The locking portion 431 is a step formed between adjacent pressing portions 432 on adjacent teeth 43. When the pawls 42 abut against the locking portion 431 from the second rotational direction side R2, relative rotation of the support 3 toward the second rotational direction side R2 is restricted. Each pressing portion 432 has an outer surface that is gently inclined toward the radially outer side D1 as it approaches the second rotational direction side R2, thereby allowing relative rotation of the support 3 toward the first rotational direction side R1. The pressing portion 432 abuts against the tip of the pawl 42 and supports or presses the cylindrical body 2 from the radially inner side D2. Among the pressing portions 432 adjacent to each other, one pressing portion 432 is arranged on the second rotational direction side R2 relative to the other pressing portion 432, and the other pressing portion 432 is arranged on the outer side D1 in the radial direction relative to the one pressing portion 432.

[0058] In this embodiment, a claw 42 is provided on each segment 23. As illustrated in Figures 1 to 6, the claw 42 is disposed at a central position in the circumferential direction C on each segment 23. The claw 42 provided on each segment 23 engages with one of a plurality of opposing teeth 43 on the support body 3. According to this configuration, the support body 3 can press the central position of each segment 23 in the circumferential direction C, making it easy to deform the cylindrical body 2 in the radial direction D in a balanced manner.

[0059] In this embodiment, the teeth 43 are provided corresponding to the claws 42 provided on each segment 23. As illustrated in Figures 1 to 6, in the cylindrical body 2 having a four-segment structure, a total of four claws 42 are provided on the four segments 23, and four groups of the teeth 43 corresponding to each claw 42 are provided. This configuration makes it easy to align the positions in the radial direction D at which all of the claws 42 press against the support body 3.

[0060] Between adjacent groups in the rotation direction R, a step portion is provided that is approximately the same length as the radial direction D of the claws 42. By hooking the fingertip on this step portion, the user can easily rotate the support 3 in the hollow portion 22A of the cylindrical body 2.

[0061] Preferably, the cylindrical body 2 is configured by three or more divided bodies 23. According to this configuration, the outer periphery of the cylindrical portion 21 configured by each divided body 23 moves in the radial direction D with little deviation in the circumferential direction C.

[0062] More preferably, as illustrated in Figures 1 to 6, the cylindrical body 2 is configured from four divided bodies 23. Here, the amount of change in the pressing position increases as the length of the pressing portion 432 in the circumferential direction C increases. With this configuration, there is a good balance between the amount by which the outer periphery of the cylindrical portion 21 can deform radially outward D1 and the pressing position of the divided bodies 23 in the circumferential direction C.

[0063] The sealing body 5 fills the gap in the radial direction D between the wall body W and the cylindrical body 2. In this embodiment, the sealing body 5 is a rubber member and is attached to the outer periphery of the cylindrical body 2. The user places the cylindrical body 2 with the sealing body 5 attached to its outer periphery in the through hole WH. Then, by deforming the cylindrical body 2 radially outward D1 as described above, the sealing body 5, which deforms radially outward D1 together with the cylindrical body 2, fills the gap that occurs between the wall body W and the cylindrical body 2 in the radial direction D. As a result, the sealing body 5 prevents air, insects, water, and other foreign matter from passing from one space across the wall body W to the other space through the through hole WH, ensuring airtightness between the cylindrical body 2 and the through hole WH.

[0064] The seal body 5 holds the plurality of divided bodies 23 together from the radially outer side D1. In this embodiment, the seal body 5 is a cylindrical member. The seal body 5 is attached to the cylindrical portion 21 so that its inner peripheral portion presses against the outer peripheral surface of the cylindrical portion 21. In this manner, the seal body 5 prevents the plurality of divided bodies 23 from separating in the circumferential direction C.

[0065] In this embodiment, the seal body 5 is attached to the cylindrical body 2 so as to be movable relative to the cylindrical body 2 in the circumferential direction C. According to this configuration, when the cylindrical body 2 deforms radially outward D1, the seal body 5 can deform radially outward D1 without bias in the circumferential direction C. As a result, the seal body 5 can reliably fill the gap between the wall body W and the cylindrical body 2 over the entire circumferential direction C.

[0066] 3. Method of the embodiment A method for installing the penetrator 1 of this embodiment in a through hole WH that penetrates a wall W will be described with reference to the drawings. The method for installing the penetrator 1 in the through hole WH includes the steps of placing a cylindrical body 2 in the through hole WH, placing at least a portion of a support body 3 in a hollow portion 22A of the cylindrical body 2, deforming the cylindrical body 2 in the radial direction D using the support body 3, and accommodating the support body 3 in the hollow portion 22A of the cylindrical body 2.

[0067] To install the penetrator 1 in the through hole WH that penetrates the wall W, the cylindrical body 2 is placed in the through hole WH along the axial direction A of the through hole WH, as shown in Figures 4 and 5. In this embodiment, the cylindrical body 2 is inserted into the through hole WH so that the flange portion 22 is positioned on the first axial side A1 relative to the wall W. Because the outer diameter of the cylindrical portion 21 is smaller than the inner diameter of the through hole WH, the user can easily insert the cylindrical body 2 into the through hole WH.

[0068] Preferably, the cylindrical body 2 is placed in the through hole WH with the multiple divided bodies 23 held integrally by the sealing body 5 in the radial direction D. In this way, when inserting the cylindrical body 2 into the through hole WH, the cylindrical body 2 can be placed in the through hole WH while maintaining its integral shape, and the sealing body 5 can be placed in the through hole WH together with the cylindrical body 2. This allows the user to easily place the cylindrical body 2 and the sealing body 5 in the through hole WH.

[0069] After the cylindrical body 2 is placed in the through-hole WH, at least a portion of the support 3 is placed in the hollow portion 22A of the cylindrical body 2. In this embodiment, the support 3 is inserted into the hollow portion 22A of the cylindrical body 2 from the first axial side A1 relative to the wall body W.

[0070] After at least a portion of the support body 3 is disposed in the hollow portion 22A of the cylindrical body 2, the support position of the support body 3 relative to the cylindrical body 2 is changed to deform the cylindrical body 2 in the radial direction D, as shown in FIGS. 5 and 6 . In this embodiment, by changing the support position of the support body 3 relative to the cylindrical body 2 to the radially outward direction D1, the support body 3 presses the multiple divided bodies 23 toward the radially outward direction D1. As a result, the multiple divided bodies 23 move toward the radially outward direction D1. As the multiple divided bodies 23 move toward the radially outward direction D1, they deform so that gaps are generated between adjacent divided bodies 23 in the circumferential direction C.

[0071] When the cylindrical body 2 is deformed in the radial direction D, the support position of the support 3 relative to the cylindrical body 2 is changed to the radially outer side D1 as the support 3 is rotated toward the first rotational direction side R1. In this embodiment, the part of the support 3 housed in the cylindrical body 2 presses and supports the pressed portion 24.

[0072] Preferably, when the cylindrical body 2 is deformed in the radial direction D, the rotation restriction mechanism 4 restricts rotation of the support body 3 toward the second side R2 in the rotation direction. In this embodiment, the rotation toward the second side R2 in the rotation direction is restricted by engaging the pawl 42 with one of the multiple teeth 43 in the ratchet structure 41. This allows the outer diameter of the cylindrical body 2 to be maintained in that state simply by rotating the support body 3 toward the first side R1 in the rotation direction and adjusting the outer diameter of the cylindrical body 2 to an extent that allows the cylindrical body 2 to be fixed in the through hole WH.

[0073] More preferably, when the cylindrical body 2 is deformed in the radial direction D, if the cylindrical body 2 adheres excessively to the wall W, the support 3 is removed from the hollow portion 22A of the cylindrical body 2. In this embodiment, the support 3 housed in the hollow portion 22A of the cylindrical body 2 can be pulled out from the hollow portion 22A of the cylindrical body 2 toward the first axial side A1. In this way, even if the cylindrical body 2 adheres excessively to the wall W, the outer diameter of the cylindrical body 2 can be adjusted again.

[0074] In this way, after the cylindrical body 2 is placed in the through hole WH, the dimensions of the cylindrical body 2 can be adjusted with the support body 3, so that the cylindrical body 2 can be easily fixed to the wall W even for through holes WH whose dimensions in the radial direction D are larger than the outer periphery of the cylindrical body 2. The cylindrical body 2 and the seal body 5 can be expanded in diameter within the variable range of the dimensions in the radial direction D of the outer periphery 31 of the support body 3 (i.e., within the range from the minimum diameter to the maximum diameter of the outer periphery 31 of the support body 3), and under this constraint, the cylindrical body 2 can be easily fixed to through holes WH of any size.

[0075] Preferably, after the cylindrical body 2 is deformed in the radial direction D, the entire support body 3 is housed in the hollow portion 22A of the cylindrical body 2, as shown in Fig. 7. In this embodiment, the support body 3 is housed in the hollow portion 22A of the cylindrical body 2 by pushing the support body 3 into the second axial side A2. Therefore, a user who fixes the penetrator 1 to the wall W can fix the penetrator 1 to the wall W only from the first axial side A1 relative to the wall W. In other words, the user does not need to perform an operation to fix the penetrator 1 to the wall W from the second axial side A2, and therefore the penetrator 1 can be easily fixed to the wall W.

[0076] With the support 3 housed in the hollow portion 22A of the cylindrical body 2, the penetrator 1 is fixed to the wall W. Pipes TW are inserted into the penetrator 1 fixed to the wall W. In addition, depending on the airtightness or waterproofness required for the wall W, airtight and waterproofing treatment may be performed to cover the hollow portion 22A of the cylindrical body 2 and the hollow portion 22A of the support 3. Examples of such treatment include covering with a separate member such as caulking, putty, or a cover. Note that the insertion of the pipes TW into the penetrator 1 and the above-mentioned airtight and waterproofing treatment are not limited to being performed after the penetrator 1 is installed in the wall W, and may be determined appropriately depending on the situation.

[0077] 4. Other embodiments (1) In the present embodiment, it has been described that the outer circumferential portion 31 of the support body 3 abuts against the pressed portion 24. However, as long as the support body 3 presses and supports the pressed portion 24 from the radially inner side D2, the outer circumferential portion 31 of the support body 3 does not have to abut against the pressed portion 24. For example, the support body 3 may support or press the pressed portion 24 from the radially inner side D2 via another component.

[0078] (2) In the present embodiment, it has been described that the length of the cylindrical portion 21 may be adjusted when the length of the axial direction A of the cylindrical body 2 is longer than the thickness of the wall body W. However, even when the length of the axial direction A of the cylindrical body 2 is longer than the thickness of the wall body W, the length of the cylindrical portion 21 does not necessarily have to be adjusted, for example, when the protruding length is small. In other words, the cylindrical body 2 may be fixed to the wall body W in a state where it protrudes from the wall body W. With this configuration, the length of the cylindrical portion 21 is not adjusted when fixing the cylindrical body 2 to the wall body W, making it easier to fix the cylindrical body 2 to the wall body W.

[0079] (3) In the present embodiment, the cylindrical body 2 is described as including a plurality of segments 23. However, the cylindrical body 2 does not need to include a plurality of segments 23 as long as it is deformed radially outward D1 by being pressed by the support body 3 from the radially inward D2. For example, the cylindrical body 2 may have a structure different from the plurality of segments 23, or may be composed of a member that deforms itself. As a structure different from the plurality of segments 23, for example, the cylindrical body 2 may be a cylindrical member having a slit along the axial direction A. When such a member is pressed by the support body 3 from the radially inward D2, it deforms radially outward D1 while the slit expands in the circumferential direction C. Alternatively, the cylindrical body 2 may have a structure in which a slit along the axial direction A exists in a part of the circumferential direction C, and the slit portion overlaps in the radial direction D.

[0080] (4) In the present embodiment, the dimension of the support body 3 in the axial direction A is described as being shorter than the dimension of the hollow portion 22A of the cylindrical portion 21 in the axial direction A. However, the dimension of the support body 3 in the axial direction A may be the same as the dimension of the cylindrical portion 21, or may be longer than the dimension of the cylindrical portion 21.

[0081] (5) In the present embodiment, the rotation restriction mechanism 4 has been described as including the ratchet structure 41. As such, the ratchet structure 41 is one example of the rotation restriction mechanism 4. In addition to the ratchet structure 41, the rotation restriction mechanism 4 may, for example, allow rotation of the support body 3 toward the first side R1 in the rotation direction and restrict rotation of the support body 3 toward the second side R2 in the rotation direction by friction generated between the cylindrical body 2 and the support body 3.

[0082] (6) In the present embodiment, the ratchet structure 41 has been described as having the pawl 42 protruding from the inner periphery of the cylindrical body 2 and having multiple teeth 43 formed on the outer periphery 31 of the support body 3. However, the pawl 42 may protrude radially outward from the outer periphery 31 of the support body 3, and the multiple teeth 43 may be formed on the inner periphery of the cylindrical body 2.

[0083] (7) In the present embodiment, the claws 42 are described as being formed on the inner periphery of the cylindrical body 2. The claws 42 may be formed along the entire axial direction A on the inner periphery of the cylindrical body 2, or may be formed partially on the second axial side A2, as long as the pressing portion 432 is positioned to support or press the pressed portion 24 when the support body 3 is positioned to fix the penetrator 1 in the through-hole WH. The phrase "partially forming the claws 42 on the second axial side A2" on the inner periphery of the cylindrical body 2 includes, for example, a case in which the claws 42 are formed between the end on the second axial side A2 and a portion of the inner periphery of the cylindrical body 2 that is closer to the second axial side A2 than the end on the first axial side A1. Additionally, the claws 42 may be formed in an intermediate portion of the inner periphery of the cylindrical body 2 between the end on the first axial side A1 and the end on the second axial side A2. The claws 42 may be formed on the inner periphery of the cylindrical body 2 from the end on the first axial side A1 to the portion of the second axial side A2 closer to the first axial side A1.

[0084] (8) In the present embodiment, it was primarily assumed that the position of the pressed portion 24 in the radial direction D was the same throughout the axial direction A. However, the position of the pressed portion 24 in the radial direction D may change depending on the position in the axial direction A. Depending on the construction site, for example, the inner diameter of the through hole WH may decrease from the first axial side A1 toward the second axial side A2. In such a case, it is preferable that the pressed portion 24 has a tapered shape corresponding to the inner diameter of the through hole WH in the axial direction A, such that the pressed portion 24 is positioned radially outward D1 as it moves from the first axial side A1 toward the second axial side A2. According to this configuration, even if the pressed portion 24 is pressed by a support 3 whose outer diameter of the outer circumferential portion 31 does not change depending on the position in the axial direction A, the pressed portion 24 is pressed further radially outward D1 as it moves from the second axial side A2 toward the first axial side A1. Therefore, the outer periphery of the cylindrical portion 21 expands more radially outward D1 as it moves from the second axial side A2 to the first axial side A1, so that the outer periphery of the cylindrical body 2 can be tightly attached to the wall body W at any position in the axial direction A.

[0085] In addition, an example of a configuration in which the position of the pressed portion 24 in the radial direction D changes depending on the position in the axial direction A is a configuration in which the position of the pressing portion 432 in the radial direction D changes depending on the position in the axial direction A. Alternatively, a configuration in which the positions of both the pressed portion 24 and the pressing portion 432 in the radial direction D change depending on the position in the axial direction A may be used.

[0086] (9) In the present embodiment, it is primarily assumed that the position of the pressed portion 24 in the radial direction D is the same throughout the axial direction A. However, the pressed portion 24 may have a tapered portion at the end on the second axial side A2 that slopes radially outward D1 as it moves from the second axial side A2 to the first axial side A1. With this configuration, when the support 3 is inserted into the hollow portion 22A of the cylindrical body 2 from the second axial side A2 relative to the wall W, the end on the second axial side A2 of the pressed portion 24 (claw 42) is less likely to get caught on the end on the first axial side A1 of the pressing portion 432 (tooth 43). Therefore, the support 3 is easily inserted into the hollow portion 22A of the cylindrical body 2. Similarly, the pressing portion 432 may have a tapered portion at the end on the first axial side A1 that slopes radially outward D1 as it moves from the first axial side A1 to the second axial side A2. Furthermore, both the pressed portion 24 and the pressing portion 432 may be provided with the tapered portion.

[0087] (10) In the above embodiment, the seal body 5 is described as being cylindrical. However, a structure (flange structure) protruding toward the radially outer side D1 may be provided at the end of the seal body 5 on the first axial side A1. According to this configuration, when the cylindrical body 2 is fixed to the wall body W, the flange structure is sandwiched between the flange portion 22 of the cylindrical body 2 and the wall body W. Therefore, the flange structure can fill the gap between the flange portion 22 of the cylindrical portion 21 and the wall body W. As a result, the amount of putty required to make the gap between the flange portion 22 of the cylindrical portion 21 and the wall body W airtight can be reduced.

[0088] (11) In the above embodiment, the penetrator 1 is described as having the seal body 5 to ensure airtightness between the cylindrical body 2 and the through hole WH. However, if airtightness is not required between the cylindrical body 2 and the through hole WH, the penetrator 1 does not necessarily have to have the seal body 5. In such a case, the penetrator 1 may be provided with a movable restricting body that restricts separation of the multiple segments 23 while allowing relative movement of the segments 23 in the circumferential direction C.

[0089] (12) The configurations disclosed in the above-described embodiments (including the above-described embodiments and other embodiments; the same applies hereinafter) can be applied in combination with configurations disclosed in other embodiments, as long as no contradiction occurs. Regarding other configurations, the embodiments disclosed in this specification are illustrative in all respects and can be appropriately modified within the scope of the present disclosure. [Industrial Applicability]

[0090] The technology disclosed herein can be used for a penetrator that is installed in a through hole that penetrates a wall. [Explanation of symbols]

[0091] 1: Penetrator 2: Cylindrical body 3:Support 4: Rotation restriction mechanism 5: Seal body 22A: Hollow part 23: Divided body 24: Pressed part 31: Outer periphery 41: Ratchet structure 42: Nails 43: Teeth 432: Pressing part A: Axial direction D: Radial direction D1: Radial outer side D2: Radial inner side W: Wall WH:Through hole

Claims

1. A penetrator to be installed in a through hole penetrating a wall body, a cylindrical body disposed in the through hole along the axial direction of the through hole and deformable in a radial direction; a support member at least a portion of which is disposed in a hollow portion of the cylindrical body and which supports the cylindrical body from a radially inner side; The support body is capable of supporting the cylindrical body at a plurality of radial positions, and the support body deforms the cylindrical body in the radial direction by changing the support position relative to the cylindrical body.

2. The penetrating tool according to claim 1 , wherein the support body is rotatable about an axis along the axial direction, and the support position is adjusted to be radially outward as the support body rotates toward one side.

3. The penetrator according to claim 2 , wherein the support body is entirely receivable in the hollow portion of the cylindrical body.

4. The penetrator according to claim 2 , wherein the cylindrical body comprises a plurality of divided bodies divided in the circumferential direction.

5. Further provided is a seal body that fills a radial gap between the wall body and the cylindrical body, The penetrator according to claim 4 , wherein the seal body holds the plurality of divided bodies together from the radially outer side.

6. The penetrator according to claim 2 , further comprising a rotation restriction mechanism that allows rotation toward one side of the support and restricts rotation toward the other side of the support.

7. The rotation restriction mechanism includes: claws protruding radially inward from an inner periphery of the cylindrical body; a plurality of teeth provided on an outer periphery of the support body so that each tooth engages with the pawl and the engagement position with respect to the pawl gradually becomes radially outward; The penetrator of claim 6 including a ratchet structure having:

8. The penetrator according to claim 1 , wherein a radial position of a pressed portion of the cylindrical body that is pressed by the support body changes from one axial side to the other axial side.

9. A method for installing a penetrator in a through hole that penetrates a wall body, comprising: placing a cylindrical body that is radially deformable in the through hole along an axial direction of the through hole; a step of disposing at least a portion of a support member capable of supporting the cylindrical body at a plurality of positions in a radial direction in a hollow portion of the cylindrical body; and changing a support position of the support body relative to the cylindrical body to radially deform the cylindrical body.

10. 10. The method according to claim 9, wherein in the step of radially deforming the cylindrical body, the support position of the support relative to the cylindrical body is changed to be radially outward as the support is rotated to one side around an axis along the axial direction.

11. The method of claim 10 , further comprising, after the step of radially deforming the cylindrical body, the step of axially compressing the support body so that the support body is entirely contained within the hollow portion of the cylindrical body.

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