Penetration sleeve and penetration sleeve installation structure

Abstract

To provide a penetration sleeve capable of checking whether a sleeve body part inserted in a through hole of a division body has length according to thickness of the division body.SOLUTION: The sleeve comprises: a sleeve body part 8 which can be inserted in a through hole 2; and a contact piece part 9 which can be in contact with an outside surface of a division body 1 at a posture, at which it projects outward in a radial direction R from an end in an axial core direction X of the sleeve body part 8, while the sleeve body part 8 is provided on the through hole 2. The sleeve body part 8 is set to have plural lengths in the axial core direction X, so as to constitute a group of multiple kinds of penetration sleeve products. The contact piece part 9 comprises an identification shape portion 21 formed into a different shape for each length setting of the plural sleeve body parts 8 in the axial core direction X. The length setting of the sleeve body part 8 in the axial core direction X can be identified according to the shape of the identification shape portion 21.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a through sleeve that can be installed in a through hole formed in a partition, and to a through sleeve installation structure in which a through sleeve is installed in a through hole formed in a partition. [Background technology]

[0002] Patent Document 1 shows a through sleeve (fireproof sleeve) that can be installed in a through hole (P1) formed in a partition (wall P). The through sleeve of Patent Document 1 includes a sleeve main body (sleeve main body 10) that is inserted into the through hole, and an abutment piece (flange plate 20) that protrudes radially outward from one end of the sleeve main body in the axial direction and can abut against a surface facing one side of the partition when the sleeve main body is inserted from one side of the through hole, and when the sleeve main body is inserted into the through hole to install the through sleeve in the through hole, the abutment piece abuts against the surface on one side of the partition, making it easy to position the sleeve.

[0003] Furthermore, the through sleeve of Patent Document 1 is provided with a pair of slide pieces (11) that are attached in a state in which they can slide axially relative to the sleeve main body, and by sliding the pair of slide pieces relative to the sleeve main body, the length can be adjusted to correspond to the thickness of the partition body, eliminating the need to cut the sleeve main body to match the thickness of the partition body. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2006-234140 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, providing the through sleeve with a pair of slide pieces tends to increase the cost of the through sleeve. Therefore, it is conceivable to reduce costs by providing a lineup of many different types of through sleeve products with different lengths of the sleeve main body and using a type of through sleeve that corresponds to the thickness of the partition body. However, if there is such a lineup of many different types of through sleeve products with different lengths of the sleeve main body, it may be necessary to check, for example, from the viewpoint of quality control, whether the sleeve main body of the through sleeve has a length that corresponds to the thickness of the partition body after the through sleeve is installed in the through hole of the partition body.

[0006] In view of this situation, the main object of the present invention is to provide a through sleeve that makes it possible to confirm whether the sleeve main body portion inserted into the through hole of the partition body is of a length appropriate to the thickness of the partition body, even after the through sleeve has been installed in the through hole of the partition body. [Means for solving the problem]

[0007] A first characteristic configuration of the present invention is a through-sleeve that can be installed in a through-hole formed in a partition, A sleeve body portion that can be inserted into the through hole; a contact piece portion that can contact an outer surface of the partition body in a position protruding radially outward from an axial end portion of the sleeve body portion when the sleeve body portion is installed in the through hole; A wide variety of through sleeve products are formed by setting a plurality of lengths of the sleeve main body in the axial direction, The abutment piece portion has an identifying shape portion formed in a different shape for each of the multiple axial length settings of the sleeve main body portion, and the axial length setting of the sleeve main body portion can be identified by the shape of the identifying shape portion.

[0008] According to this configuration, a wide variety of through sleeve products are formed by setting multiple axial lengths of the sleeve body, and by using a through sleeve with a length corresponding to the thickness of the partition, it is not necessary to cut the sleeve body to match the thickness of the partition. When the through sleeve is installed in the through hole of the partition, the abutting piece is exposed in contact with the outer surface of the partition, so that the inspector can visually check the shape of the distinguishing shape part of the abutting piece. Then, the inspector can identify which of the multiple axial length settings of the sleeve body is set based on the shape of the distinguishing shape part confirmed by visual inspection. In addition, since the abutting piece is formed in a different shape for each length setting, the inspector can check the shape of the distinguishing shape part of the abutting piece by touching it with his / her hand even in a place where it is difficult to see, such as a dark place. Therefore, even after the through sleeve has been installed in the through hole of the partition, it is possible to check whether the sleeve main body inserted into the through hole of the partition has a length that corresponds to the thickness of the partition (i.e., which product it is from the group of many different through sleeve configurations having different axial length settings for the sleeve main body).

[0009] A second characteristic feature of the present invention is that the distinguishable shape portion is provided on the outer edge portion of the contact piece in a state where it forms the outline of the contact piece.

[0010] According to this configuration, the outer surface of the partition serves as a background, making it easy to visually confirm the shape of the identifying shape portion of the outer edge portion of the abutment piece, so that the length setting of the sleeve main body portion can be easily identified.

[0011] A third characteristic feature of the present invention is that the distinguishable shape portion is provided at the tip end of the contact piece portion.

[0012] For example, a member such as a cylindrical holder for holding a thermally expandable fireproof material may be separately installed inside the sleeve main body, and the flange of the member may be positioned so as to cover the base end side of the abutment piece, so that the base end side (inner side in the radial direction) of the abutment piece may be covered with another member. In contrast, according to the present configuration, the abutment piece has an identifying shape portion at the tip portion that is positioned on the outermost side in the radial direction, so that even if the base end side of the abutment piece is covered with another member, the identifying shape portion is exposed, so that the length setting of the sleeve main body can be identified. In addition, before being installed in the through hole, the abutment piece may be integrally formed so as to protrude from the sleeve main body to one side in the axial direction, and when being installed in the through hole, the base end of the abutment piece forming portion may be bent radially outward to form the abutment piece. In this case, if the distinguishing shape portion is formed in the middle of the abutment piece by forming the outer edge portion in a concave shape, it is considered that the abutment piece forming portion may be easily bent at the middle portion having the distinguishing shape portion when being bent. In contrast, according to the present configuration, as described above, the distinguishing shape portion is provided at the tip end of the abutment piece, so that the abutment piece portion is prevented from bending at the middle portion due to the distinguishing shape portion, and it becomes easier to form the abutment piece by bending the abutment piece forming portion at the base end.

[0013] A fourth characteristic feature of the present invention is that the distinguishing shape portion is formed in a shape in which a part of an outer edge portion of the abutting piece is recessed.

[0014] According to this configuration, the distinguishing shape portion has a recessed shape in part of the outer edge portion of the abutment piece, thereby avoiding an increase in size of the abutment piece, which would occur if the distinguishing shape portion were shaped to protrude from the outer edge portion of the abutment piece.

[0015] A fifth characteristic configuration of the present invention is a fixing hole through which a fixing tool can be inserted when fixing the contact piece to the partition body, The distinguishing shape portion is provided at a position where it is not hidden by the fastener inserted into the fastening hole in the contact piece portion.

[0016] According to this configuration, the abutment piece can be fixed to the partition body using a fixing device inserted into the fixing hole of the abutment piece, while the distinguishing shape portion of the abutment piece is not hidden by the fixing device. Therefore, even when the abutment piece is fixed in this manner with the fixing device, the length setting of the sleeve main body portion can be identified by checking the shape of the distinguishing shape portion of the abutment piece.

[0017] A sixth characteristic configuration of the present invention is a through-sleeve installation structure in which a through-sleeve is installed in a through-hole formed in a partition, The through sleeve is A sleeve body portion to be inserted into the through hole; a contact piece portion that can contact an outer surface of the partition body in a position protruding radially outward from an axial end portion of the sleeve body, The abutment piece is formed in a shape corresponding to the multiple axial length settings of the sleeve main body portion, and is provided with an identifying shape portion whose shape makes it possible to identify the axial length setting of the sleeve main body portion.

[0018] According to this configuration, when the through sleeve is installed in the through hole of the partition, the abutting piece is exposed in contact with the outer surface of the partition, so that the inspector can visually check the shape of the distinguishing shape portion of the abutting piece. Then, the inspector can identify which of the multiple axial length settings of the sleeve main body is set based on the shape of the distinguishing shape portion visually checked. Therefore, even after the through sleeve is installed in the through hole of the partition, it can be confirmed that the length of the sleeve main body inserted in the through hole of the partition corresponds to the thickness of the partition. [Brief description of the drawings]

[0019] [Figure 1] A perspective view of a through sleeve installation structure [Diagram 2] FIG. 13 is a perspective view showing a state in which a through-hole is fitted with a through-sleeve; [Diagram 3] FIG. 1 is a perspective view of a first through sleeve; [Figure 4] FIG. 2 is a perspective view of a second through sleeve; [Diagram 5] A perspective view of a third through sleeve [Figure 6] Plan view of the through sleeve [Figure 7] A diagram showing the contact piece of the through sleeve. [Figure 8] Perspective view of the resin sleeve [Figure 9] FIG. 13 is a view showing a contact piece of a through sleeve according to another embodiment; [Figure 10] FIG. 13 is a view showing a contact piece of a through sleeve according to another embodiment; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a through sleeve and a through sleeve installation structure according to the present invention will be described with reference to the drawings. As shown in FIG. 1, the through sleeve installation structure has a through sleeve 3 installed in a through hole 2 formed in a partition 1. In this embodiment, the partition 1 is a wall of a building, specifically, a hollow wall in which a gap is formed between a pair of wall bodies 1A, but the partition 1 may be a wall without a gap inside, and may be a floor or the like. The through sleeve 3 is made of a steel plate and is non-combustible. A long body 4 such as various pipes for water supply and drainage or air conditioning equipment and various wiring such as electric cables is inserted into the through sleeve 3, and a holder 6 for holding a thermally expandable fireproof material 5 is installed inside the through sleeve 3, and the gap generated between the inner surface of the through sleeve 3 and the outer surface of the long body 4 is filled with the thermally expandable fireproof material 5. For example, the thermally expandable fireproof material 5 is stored in a flexible bag or the like formed of a resin film material.

[0021] In addition, in a state where the through sleeve 3 and the retaining body 6 are installed in the through hole 2, the axial direction X along which the axis of the through sleeve 3 runs is the same as the axial direction of the through hole 2 and the axial direction of the retaining body 6. For this reason, the axial direction of the through hole 2 and the axial direction of the retaining body 6 will also be referred to as the axial direction X in the following description. In addition, one side of the partition 1 and the through hole 2 is the same as one side X1 of the axial direction X of the through sleeve 3, and the other side of the partition 1 and the through hole 2 is the same as the other side X2 of the axial direction X of the through sleeve 3. Furthermore, a direction perpendicular to the axis of the through sleeve 3 is defined as a radial direction R, and a direction going around the axis of the through sleeve 3 is defined as a circumferential direction C.

[0022] Next, the through sleeve 3 that is configured so as to be able to be installed in the through hole 2 formed in the partition 1 will be described. As shown in Figures 1 and 2, the through sleeve 3 is provided with a sleeve main body 8 that can be inserted into the through hole 2, and an abutment piece 9 that can abut against the outer surface of the partition 1 in a position protruding outward in the radial direction R from the end of the sleeve main body 8 in the axial direction X when the sleeve main body 8 is installed in the through hole 2. As shown in Figures 1 and 2, the through sleeve 3 includes a sleeve main body 8 that can be inserted into the through hole 2, and an abutment piece 9 that can abut against a surface facing the one side X1 of the partition 1 in a position protruding outward in the radial direction R from the end of the sleeve main body 8 on the one side X1 in the axial direction X when the sleeve main body 8 is inserted into the through hole 2 from one side X1 of the through hole 2.

[0023] As shown in Figs. 3 to 5, the through sleeve 3 is formed by rolling a single steel plate into a cylindrical shape. To explain further, the sleeve main body 8 is formed by rolling a sheet of steel plate into a cylindrical shape. The sleeve main body 8 formed by rolling the plate into a cylindrical shape as described above has two tongue-like portions protruding toward one side X1 in the axial direction X, and each of these two protruding portions forms a contact piece 9. In this way, the two contact pieces 9 are integrally formed so as to protrude from the sleeve main body 8 toward one side X1 in the axial direction X.

[0024] The abutment piece 9 is configured to be able to abut against a surface facing the one side X1 of the partition 1 (an example of an outer surface that the abutment piece 9 abuts against) in a position protruding outward in the radial direction R from the end of the one side X1 of the axial direction X of the sleeve main body 8 when the sleeve main body 8 is inserted into the through hole 2 from the one side X1 of the through hole 2. That is, as shown in FIG. 2, the abutment piece 9 is bent outward in the radial direction R with the base end (end of the other side X2 in the axial direction X) of the abutment piece 9 as a bending fulcrum, so that the abutment piece 9 is in a position protruding outward in the radial direction R from the end of the one side X1 of the axial direction X of the sleeve main body 8, and when the through sleeve 3 is installed in the through hole 2, the abutment piece 9 abuts against the surface facing the one side X1 of the partition 1. The abutment of the abutment piece 9 against the partition 1 in this manner facilitates positioning of the through sleeve 3. The contact piece portion 9 is formed with the folding recess 20 that is recessed at the base end portion to facilitate folding as described above. The folding recess 20 is formed at each of both ends in the circumferential direction C at the base end portion of the contact piece portion 9.

[0025] As shown in Figs. 3 to 5, a wide variety of through sleeve products are made by setting a plurality of lengths in the axial direction X of the sleeve main body 8. That is, there are many kinds of through sleeves 3 with different lengths in the axial direction X of the sleeve body 8. In this embodiment, there are three kinds of through sleeves 3: a first through sleeve 3A (see FIG. 3) having a first length L1 (e.g., 75 mm) in the axial direction X of the sleeve body 8; a second through sleeve 3B (see FIG. 4) having a second length L2 (e.g., 180 mm) longer than the first length L1 in the axial direction X of the sleeve body 8; and a third through sleeve 3C (see FIG. 5) having a third length L3 (e.g., 220 mm) longer than the second length L2 in the axial direction X of the sleeve body 8. The first through sleeve 3A, which has the shortest length in the axial direction X of the sleeve body 8, can be suitably used for a relatively thin wall, such as a partition wall, in which a wall body 1A is provided on only one side.

[0026] 3 to 6, in the initial state (natural state), the through sleeve 3 has a gap 10 formed between both ends in the circumferential direction C of the sleeve main body 8, and the long body 4 can be moved into the sleeve main body 8 from the outside in the radial direction R through this gap 10. Therefore, the long body 4 can be inserted into the through sleeve 3 not only from the outside in the axial direction X, but also from the outside in the radial direction R. In addition, the through sleeve 3 can be reduced in diameter from the initial state against the restoring force, and by reducing the diameter in this manner, it becomes easier to insert the through sleeve 3 into the through hole 2 smoothly.

[0027] 4 and 5, the second through sleeve 3B and the third through sleeve 3C have, at their ends on the other side X2 in the axial direction X, a locking portion 15 and a locked portion 16 with which the locking portion 15 can be locked. The locking portion 15 is provided at one end of the sleeve main body 8 in the circumferential direction C, and the locked portion 16 is provided at the other end of the sleeve main body 8 in the circumferential direction C. By locking the locking portion 15 to the locked portion 16, the diameter of the end of the sleeve main body 8 on the other side X2 can be held in a reduced state.

[0028] When the through sleeve 3 is installed in the through hole 2, the diameter of the sleeve body 8 of the through sleeve 3 is reduced so that the sleeve body 8 can be inserted into the through hole 2. That is, at the end of the other side X2 in the axial direction X of the through sleeve 3, the locking portion 15 is locked with the locked portion 16 to hold the diameter reduced to a predetermined size. Then, by inserting the through sleeve 3 into the through hole 2 from the end of the other side X2 with the diameter reduced in this manner, the through sleeve 3 is less likely to get caught on the wall 1A of the other side X2, so that the through sleeve 3 can be smoothly inserted into the through hole 2.

[0029] After inserting the through sleeve 3 into the through hole 2, the engagement of the engaging portion 15 with the engaged portion 16 is released, whereby the diameter dimension of the sleeve main body portion 8 expands due to the restoring force, and the through sleeve 3 can be installed in the through hole 2 with the sleeve main body portion 8 abutting against the inner surface of the through hole 2. Here, in order to reduce the manufacturing cost of the through sleeve 3, it is desirable to configure the through sleeve 3 from one member (a plate-like body made of one steel plate), but the above-mentioned locking portion 15 and locked portion 16 need to be provided at the end of the other side X2 of the through sleeve 3, which may be cut off when corresponding to the thickness of the partition body 1. In this regard, in the present application, by using a through sleeve 3 having a length corresponding to the thickness of the partition body 1, it is not necessary to cut the end of the other side X2 of the sleeve main body 8 to match the thickness of the partition body 1, so there is no risk of the locking portion 15 and the locked portion 16 being cut off, and the through sleeve 3 including the locking portion 15 and the locked portion 16 is configured from one member (a plate-like body made of one steel plate). As shown in FIG. 3, the first through sleeve 3A has a relatively short length in the axial direction X of the sleeve main body 8, and when the end of one side X1 of the sleeve main body 8 is held by hand or the like in a contracted state in the radial direction R, the other end of the sleeve main body 8 is also unlikely to expand from a predetermined diameter dimension, and therefore, no locking portion 15 and locked portion 16 for holding the other end are provided.

[0030] As shown in Figures 1 to 5, the abutment piece portion 9 has an abutment piece fixing hole 19 (corresponding to a fixing hole, see Figures 3 to 5) through which an abutment piece fixing device 18 (corresponding to a fixing device, see Figures 1 and 2) such as a screw can be inserted when fixing the abutment piece portion 9 to the partition body 1. In other words, as shown in Figure 2, with the sleeve main body 8 inserted into the through hole 2, the abutment piece fixing device 18 can be inserted into the abutment piece fixing hole 19 of the abutment piece portion 9 and screwed into the partition body 1, thereby fixing the abutment piece portion 9 to the partition body 1.

[0031] As shown in Figures 3 to 5 and 7, the abutment piece portion 9 has an identifying shape portion 21 formed in a different shape for each of the multiple length settings in the axial direction X of the sleeve main body portion 8, and the length setting in the axial direction X of the sleeve main body portion 8 can be identified by the shape of the identifying shape portion 21. The distinguishable shape portion 21 will be described below, with the directions defined based on the state in which the contact piece 9 is folded as shown in Figs.

[0032] The distinguishable shape portion 21 is formed in such a shape that the shape of the outline as viewed in the axial direction along the axial direction X enables identification of the length setting of the sleeve main body 8. In other words, the shape of the outer peripheral edge portion of the distinguishable shape portion 21 that is uneven in the radial direction R and the circumferential direction C, and the shape of the hole that penetrates in the axial direction X enable identification of the length setting of the sleeve main body 8.

[0033] In this embodiment, the distinguishing shape portion 21 is provided on the outer edge portion of the abutment piece 9 in a state that constitutes the contour of the abutment piece 9, and more specifically, the distinguishing shape portion 21 is provided not on side edge portions located on both sides in the circumferential direction C of the outer edge portion of the abutment piece 9, but on the tip portion that becomes the outer end portion in the radial direction R when the abutment piece 9 is folded. The distinguishing shape portion 21 is formed in a shape in which part of the outer edge portion of the abutment piece 9 (more specifically, the tip portion of the abutment piece 9) is recessed inward in the radial direction R.

[0034] To explain further, the identification shape portion 21 has a plurality of shapes (three shapes in this embodiment) corresponding to the multiple length settings in the axial direction X of the sleeve main body portion 8 (three lengths in this embodiment: a first length L1, a second length L2, and a third length L3). One of the multiple shapes (the shape shown in FIG. 7(a)) has a non-recessed tip of the abutment piece 9, and the remaining shapes (the shapes shown in FIGS. 7(b) and (c)) have differently recessed tips of the abutment piece 9, making it possible to identify the length setting in the axial direction X of the sleeve main body 8 based on the shape of the identifying shape portion 21. In other words, since the abutment piece 9 is fixed to the partition body 1 in a state of abutting against a surface facing one side X1 of the partition body 1, the set length after the through sleeve 3 is installed can be identified simply by checking from one side X1 of the partition body 1, which is the construction surface side.

[0035] Specifically, as shown in Figures 3 to 5 and 7, the distinguishable shape portions 21 include a first shape portion 21A (see Figures 3 and 7(a)), which is the distinguishable shape portion 21 of the first penetrating sleeve 3A and is formed into a shape corresponding to the first length L1, a second shape portion 21B (see Figures 4 and 7(b)), which is the distinguishable shape portion 21 of the second penetrating sleeve 3B and is formed into a shape corresponding to the second length L2, and a third shape portion 21C (see Figures 5 and 7(c)), which is the distinguishable shape portion 21 of the third penetrating sleeve 3C and is formed into a shape corresponding to the third length L3. The abutment piece 9 has a basic shape that is rectangular as shown in Figure 7(a), and the first shape portion 21A has a shape that does not recess into the tip of the abutment piece 9 from the basic shape, and as shown in Figure 7(b), the second shape portion 21B has a shape that has one portion that recesses into the tip of the abutment piece 9 from the basic shape, and as shown in Figure 7(c), the third shape portion 21C has a shape that has two portions that recess into the tip of the abutment piece 9 from the basic shape. The shapes (number of recessed portions) of the identifying shaped portions 21 are different between the first shaped portion 21A, the second shaped portion 21B, and the third shaped portion 21C, and by checking this shape, it is possible to identify the length setting in the axial direction X of the sleeve main body portion 8.

[0036] 1 and 2, the identification shape portion 21 is provided at a position where it is not hidden by the abutment piece fixing device 18 inserted into the abutment piece fixing hole 19 in the abutment piece portion 9. As shown in FIG. 2, the identification shape portion 21 is provided outside (toward the tip end) in the radial direction R of the abutment piece fixing device 18 inserted into the abutment piece fixing hole 19. In this way, since the identification shape portion 21 is provided at a position where it is not hidden by the abutment piece fixing device 18, it is configured so that the length setting of the sleeve main body portion 8 can be identified from the shape of the identification shape portion 21 even in a state where the abutment piece portion 9 is fixed to the partition body 1 by the abutment piece fixing device 18.

[0037] Next, the holder 6 will be described. As shown in Figure 8, the holder 6 includes a holder main body portion 23 capable of holding a thermally expandable fire-resistant material 5 on its inside, a flange portion 24 protruding outward in the radial direction R from an end of one side X1 of the holder main body portion 23, a support piece portion 25 protruding inward in the radial direction R from an end of the other side X2 of the holder main body portion 23, and a locking piece portion 27 protruding inward in the radial direction R from the holder main body portion 23 at a middle portion of the holder main body portion 23 in the axial direction X.

[0038] The holder main body 23 is formed in a cylindrical shape with a gap 10 formed between both ends in the circumferential direction C, and the long body 4 can be moved into the holder main body 23 from the outside in the radial direction R through this gap 10. Therefore, the long body 4 can be inserted into the holder 6 not only from the outside in the axial direction X, but also from the outside in the radial direction R. The support piece portion 25 protrudes inward in the radial direction R from the end of one side X1 of the holder main body portion 23, and is configured to receive the heat-expandable fire-resistant material 5 held inside the holder main body portion 23, thereby preventing the heat-expandable fire-resistant material 5 from moving to the other side X2 in the axial direction X. The locking piece 27 is configured so as to be lockable to a bag that stores the heat-expandable fire-resistant material 5, and is configured to hold the heat-expandable fire-resistant material 5 by being locked to the bag.

[0039] The flange portion 24 protrudes outward in the radial direction R from an end of one side X1 of the retaining body main body 23, and is configured to be able to abut against a surface facing one side X1 of the partition body 1 when the retaining body 6 is inserted from one side X1 of the through hole 2. As shown in Figs. 1 and 2, in this embodiment, since the retaining body 6 is inserted into the through hole 2 with the through sleeve 3 installed in the through hole 2, the abutment piece portion 9 of the through sleeve 3 is present on the surface facing one side X1 of the partition body 1, and the flange portion 24 abuts against the abutment piece portion 9.

[0040] 8, the flange portion 24 has a wide portion 24A and a narrow portion 24B that is narrower in width in the radial direction R than the wide portion 24A. The flange portion 24 also has flange fixing holes 29 through which flange fixing devices 28 such as screws can be inserted when fixing the flange portion 24 to the partition body 1, and the flange fixing holes 29 are provided in the wide portion 24A of the flange portion 24. The flange portion 24 also has a fixing bracket attachment portion 30 for attaching the fixing bracket 26 (see FIG. 1), and the fixing bracket attachment portion 30 is provided in the narrow portion 24B of the flange portion 24. 1 and 2, the retainer 6 is inserted inside the sleeve body 8 of the through sleeve 3 already installed in the through hole 2. At this time, as shown in FIG. 1, the retainer 6 is inserted into the through hole 2 so that the phases of the narrow portion 24B of the flange portion 24 and the abutment piece portion 9 are aligned and the wide portion 24A of the flange portion 24 and the abutment piece portion 9 do not overlap each other. Then, the flange fastener 28 is inserted into the flange fastening hole 29 of the flange portion 24 and screwed into the partition body 1, thereby fixing the flange portion 24 to the partition body 1 with the abutment piece portion 9 sandwiched between the partition body 1 and the flange portion 24.

[0041] As shown in Figure 1, when the through sleeve 3 and the retaining body 6 are installed in the through hole 2, the abutment piece fixing device 18 and the abutment piece fixing hole 19 are located radially outwardly of the narrow portion 24B of the flange portion 24 of the retaining body 6 in the radial direction R, so that the flange portion 24 can be fixed to the partition body 1 without the abutment piece fixing device 18 interfering with the flange portion 24. In addition, the distinguishing shape portion 21 of the abutment piece 9 is provided at the tip portion which is the outer end portion of the abutment piece 9 in the radial direction R, and is located outer in the radial direction R than the narrow portion 24B of the flange portion 24 of the retaining body 6. Therefore, even when the through sleeve 3 and the retaining body 6 are installed in the through hole 2, the distinguishing shape portion 21 is exposed, and the length setting of the sleeve main body portion 8 can be identified from the shape of the abutment piece 9.

[0042] In this way, the abutment piece 9 is formed in a shape corresponding to the multiple length settings in the axial direction X of the sleeve main body 8, and is provided with an identification shape portion 21 that makes it possible to identify the length setting in the axial direction X of the sleeve main body 8 by its shape. When the through sleeve 3 is installed in the through hole 2 of the partition 1, the abutment piece 9 is exposed in contact with the surface of one side X1 of the partition 1. Therefore, by identifying the length setting in the axial direction X of the sleeve main body 8 based on the shape of the identification shape portion 21 of the exposed abutment piece 9, it is possible to confirm whether the sleeve main body 8 inserted into the through hole 2 of the partition 1 has a length corresponding to the thickness of the partition 1.

[0043] [Another embodiment] Other embodiments of the present invention will be described below. Note that the configurations of the embodiments described below are not limited to being applied alone, but may also be applied in combination with the configurations of other embodiments.

[0044] (1) In the above embodiment, an example has been described in which one of the multiple shapes of the identification shape portion 21 is a shape that does not recess the tip of the contact piece portion 9, and the remaining shapes are shapes that recess the tip of the contact piece portion 9 in different shapes. However, the identification shape portion 21 may have any shape as long as it can identify the length setting of the sleeve main body portion 8.

[0045] For example, as shown in Fig. 9, the first shaped portion 21A may be rectangular, the second shaped portion 21B may be semicircular, and the third shaped portion 21C may be triangular as the plurality of distinguishable shaped portions 21. Also, as shown in Fig. 10, the first shaped portion 21A may be shaped not to protrude from the basic shape, the second shaped portion 21B may be shaped to protrude from the basic shape to one side in the circumferential direction C, and the third shaped portion 21C may be shaped to protrude from the basic shape to both sides in the circumferential direction C. The distinguishable shaped portion 21 may be shaped in a concave-convex shape that combines a concave portion and a protruding portion.

[0046] (2) In the above embodiment, the identification shape portion 21 is provided at the tip end of the contact piece 9. However, the position of the identification shape portion 21 on the contact piece 9 may be changed as appropriate. For example, the identification shape portion 21 may be provided at the center of the contact piece 9, and the length setting in the axial direction X of the sleeve main body 8 may be identified by the number and shape of identification holes formed in the identification shape portion 21.

[0047] (3) In the above embodiment, an example has been described in which the abutment piece portion 9 having the abutment piece fixing hole 19 is used to provide the distinguishable shaped portion 21. However, a separate abutment piece portion 9 not having the abutment piece fixing hole 19 may be provided, and the distinguishable shaped portion 21 may be provided on the abutment piece portion 9 not having the abutment piece fixing hole 19.

[0048] (4) In the above embodiment, an example was described in which three lengths, the first length L1, the second length L2, and the third length L3, were set as the length setting in the axial direction X of the sleeve main body portion 8. However, two lengths or four or more lengths may be set as the length setting in the axial direction X of the sleeve main body portion 8. [Explanation of symbols]

[0049] 1 Partition 2 Through holes 3 Through sleeve 8 Sleeve body 9 Contact piece 18 Contact piece fixing device (fixing device) 19 Contact piece fixing hole (fixing hole) 21 Identification shape part R Radial direction X axis direction X1 One side

Claims

1. A through-sleeve that can be installed in a through-hole formed in a partition, A sleeve body portion that can be inserted into the through hole; a contact piece portion that can contact an outer surface of the partition body in a position protruding radially outward from an axial end portion of the sleeve body portion when the sleeve body portion is installed in the through hole; A wide variety of through sleeve products are formed by setting a plurality of lengths of the sleeve main body in the axial direction, The abutment piece portion is provided with an identifying shape portion formed in a different shape for each of the multiple axial length settings of the sleeve main body portion, and the axial length setting of the sleeve main body portion can be identified by the shape of the identifying shape portion.

2. The through sleeve according to claim 1 , wherein the distinguishing shape portion is provided on an outer edge portion of the abutting piece in a state of forming a contour of the abutting piece.

3. The through sleeve according to claim 2 , wherein the distinguishing shape portion is provided at a tip end of the contact piece.

4. The through sleeve according to claim 2 or 3, wherein the distinguishing shape portion is formed by recessing a part of an outer edge portion of the abutting piece.

5. the abutment piece has a fixing hole through which a fixing tool can be inserted when fixing the abutment piece to the partition body, The through sleeve according to claim 1 or 2, wherein the distinguishing shape portion is provided at a position on the abutting piece portion where it is not hidden by the fastener inserted into the fastening hole.

6. A through-sleeve installation structure in which a through-sleeve is installed in a through-hole formed in a partition, The through sleeve is A sleeve body portion to be inserted into the through hole; a contact piece portion that can contact an outer surface of the partition body in a position protruding radially outward from an axial end portion of the sleeve body, A through sleeve installation structure in which the abutment piece portion is formed into a shape corresponding to each of the multiple axial length settings of the sleeve main body portion, and is provided with an identifying shape portion whose shape makes it possible to identify the axial length setting of the sleeve main body portion.

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