JP2023007938A - Embedded member - Google Patents

Abstract

To provide an embedded member that can be firmly embedded and fixed to an installation surface for the purposes such as installing incidental equipment on road surfaces.SOLUTION: An embedded member 1 which is arranged in an embedding hole H formed on an installation surface G and fixed in the embedding hole H by a filler F that solidifies after being filled in the embedding hole H has a body 2, the body part 2 has a fastening part 21 formed with a female thread portion 22, on the body part 2 a hole-shaped filling portion 23 is formed to penetrate in the direction along the axis of the female threaded portion 22 and is provided as such that the filler F is filled inside the filling portion 23.SELECTED DRAWING: Figure 15

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embedded member that is embedded and fixed to an installation surface for purposes such as installing incidental equipment on the road surface, for example.

A buried member such as an anchor nut fixed in a buried hole by a filling material such as mortar or concrete that solidifies after being filled in a fluid state has been conventionally used, and various inventions related to this have been proposed.

For example, Patent Document 1 discloses an anchor nut having a female threaded portion to which a male threaded portion of an anchor bolt can be screwed. It is formed in the shape of a bottomed cylinder closed by a wall portion, the female screw portion is provided so as to extend from the opening portion toward the bottom wall portion, and the outer peripheral side surface of the main body portion has a first recess recessed inward. A concave portion and a second concave portion are formed, and a groove portion extending in the circumferential direction is formed between the first concave portion and the second concave portion formed below the first concave portion, and the groove portion and the second concave portion are formed. The present applicant has proposed an invention relating to an anchor nut characterized in that a recess is provided below the upper surface of the bottom wall.

JP 2010-261492 A

In the anchor nut shown in Patent Document 1, when the anchor nut is inserted into the embedding hole and the filler is filled and solidified and installed, the filler is placed in the first recess and the second recess provided on the outer peripheral side surface of the main body. By entering, it is provided so as to fix the main body more firmly. The present invention provides an embedded member that can be firmly embedded and fixed by a different structure.

In order to achieve the above object, the present invention has the following configuration.
That is, the embedded member according to the present invention is an embedded member that is arranged in an embedded hole formed in an installation surface and fixed in the embedded hole by a filling material that solidifies after being filled in the embedded hole, wherein the embedded member has a body portion, the body portion has a fastening portion formed with a female thread portion, the body portion is formed with a hole-shaped filling portion penetrating in the direction along the axis of the female thread portion, and the filling portion The filling material is provided so as to fill the interior of the portion.

According to the embedded member of the present invention, since the main body portion has the fastening portion having the female threaded portion, the male threaded member is screwed to the fastening portion of the main body portion fixed in the embedding hole to attach the article to the installation surface. can be installed.

Further, a hole-shaped filling portion penetrating the main body portion is formed in a direction along the axis of the female screw portion, and the filling portion is provided so as to be filled with a filling material for filling the embedding hole. The filling material filled inside the portion and the filling material filled outside the body portion are connected below the body portion, so that the body portion can be firmly fixed in the embedding hole.

In addition, in the cross-sectional shape of the filling portion in the direction perpendicular to the axis of the fastening portion, if the opening at the lower end is formed larger than the upper portion, the filling is filled inside the filling portion connected at the opening. Since the cross-sectional area of the connecting portion between the material and the filler filled on the outside of the main body is provided to be larger, the filler is less likely to break and the main body can be fixed more firmly, which is preferable.

Further, by providing an inclined surface-shaped or step-shaped wedge portion on the inner surface of the filling portion, and providing the filling material in contact with the wedge portion so as to be disposed on the installation surface side with respect to the wedge portion, the inside of the filling portion The filling material and the wedge are engaged with each other, and the main body is firmly fixed by the filling material, which is preferable.

Further, a tubular member formed separately from the main body is provided, and the tubular member is provided with a tubular portion surrounding at least an upper portion of the main body and a connecting portion for connecting the tubular portion and the main body. If the filler is provided between the inner surface of the cylindrical portion and the outer surface of the main body, external force is transmitted to the main body through the fastening portion and the filler in the embedding hole is damaged. When this is done, the damage is blocked by the cylindrical portion and is less likely to reach the outside of the hole.

According to the embedded member of the present invention, the filling material filled inside the filling part provided in the body part and the filling material filled outside the body part are connected below the body part, so that the body part is It can be firmly fixed in the embedding hole.

1 is a perspective view showing an embodiment of a main body of an embedded member according to the present invention; FIG. FIG. 2 is a front view of FIG. 1; FIG. 2 is a plan view of FIG. 1; 2 is a bottom view of FIG. 1; FIG. FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3; 4 is a cross-sectional view taken along the line BB of FIG. 3; FIG. FIG. 2 is a vertical cross-sectional view showing a state in which the main body shown in FIG. 1 is embedded and fixed; 1 is a perspective view showing an embodiment of a tubular member of an embedded member according to the present invention; FIG. FIG. 9 is a front view of FIG. 8; FIG. 9 is a plan view of FIG. 8; FIG. 11 is a cross-sectional view taken along line AA of FIG. 10; FIG. 11 is a cross-sectional view taken along the line BB of FIG. 10; FIG. 12 is an enlarged view of the vicinity of the broken part in FIG. 11; FIG. 9 is a vertical cross-sectional view showing a state in which the cylindrical member of FIG. 8 is attached to the main body of FIG. 1; FIG. 15 is a vertical cross-sectional view showing a state in which the embedded member of FIG. 14 is embedded and fixed; FIG. 16 is a diagram showing a state in which an installation object is installed using the embedded member of FIG. 15; 17 is an enlarged view of the vicinity of the embedded member in FIG. 16; FIG. FIG. 18 is a diagram showing a state in which the embedded member of FIG. 17 has been pulled out from the installation surface; FIG. 18 is a diagram showing a state after the embedded member of FIG. 17 receives an external force;

Embodiments of the invention will be specifically described with reference to the drawings.

FIG. 1 is a view showing an embodiment of a body portion 2 of an embedded member 1 according to the present invention, FIG. 2 is a front view of FIG. 1, FIG. 3 is a plan view of FIG. 1, and FIG. FIG. 5 is a bottom view of FIG. 1, FIG. 5 is a sectional view taken along line AA of FIG. 3, and FIG. 6 is a sectional view taken along line BB of FIG. In FIGS. 1 to 6, the vertical direction in FIG. 2 showing the front view of the main body portion is defined as the vertical direction, and the horizontal direction is defined as the horizontal direction.

In the drawings, 1 is the embedded member, and 2 is the main body of the embedded member 1 . The main body 2 has a substantially circular upper surface and a lower surface, and has a substantially truncated cone shape with an outer circumference that increases in diameter from the upper side to the lower side in the vertical direction. A fastening portion 21 having a female threaded portion 22 capable of fastening a male thread of a male threaded member such as a bolt is formed in the center of the upper surface of the body portion 2. The female threaded portion 22 is formed with its axial direction directed in the vertical direction. are doing. The main body 2 is made of metal casting, and more specifically, is made of aluminum die casting.

A filling portion 23 is formed through the body portion 2 in the vertical direction. The filling portion 23 is formed in a through-hole shape having an opening portion 23e and an opening portion 23d on the upper surface and the lower surface of the main body portion 2, respectively. It is placed and installed. A total of four filling portions 23 are formed in the body portion 2 . In addition, each filling portion 23 has a substantially fan-shaped cross section perpendicular to the longitudinal direction, so that a substantially flat inner wall portion 25 is formed between the adjacent filling portions 23 . are provided.

An inner side surface 23 c arranged radially outward in each filling portion 23 is formed in a shape corresponding to the outer peripheral surface of the body portion 2 . Specifically, the inner side surface 23c of each filling portion 23 is positioned slightly inside the outer peripheral surface of the body portion 2, and a substantially cylindrical outer wall portion 26 is formed on the outer peripheral portion of the body portion 2. there is

The body portion 2 is formed in such a shape that the fastening portion 21 having the female thread portion 22 and the outer wall portion 26 are connected by the inner wall portions 25 .

As shown in FIG. 6, each of the filling portions 23 has an inner side surface 23a contacting the fastening portion 21 formed in an inclined surface shape extending radially outward of the main body portion 2 from vertically upward to downward. In other words, the fastening portion 21 is formed so that its outer shape increases from the top to the bottom. The inner side surface 23a of each filling portion 23 formed in an inclined surface shape functions as a wedge portion, which will be described later.

In addition, each filling portion 23 has an inner surface 23c on the side of the outer wall portion 26 formed in a slanted surface shape that extends radially outward from the upper portion to the lower portion in the vertical direction. The inclination of 23c is set to be larger than that of the inner side surface 23a. That is, the radial distance between the inner side surface 23a and the inner side surface 23c increases from the upper side to the lower side in the vertical direction, and becomes maximum at the lower opening 23d of each filling portion 23. As shown in FIG. In other words, the filling portion 23 has a cross-sectional shape perpendicular to the longitudinal direction, which is the axial direction of the fastening portion, so that the opening 23d at the lower end is larger than the opening 23d at the upper end. is formed so that is maximized.

Each of the inner wall portions 25 is formed so that its plate thickness increases from the upper side to the lower side in the vertical direction. That is, each filling portion 23 is formed such that the inner side surface 23b in contact with each inner wall portion 25 is slightly inclined with respect to the vertical direction. An inner side surface 23b of each filling portion 23 provided in an inclined shape functions as a wedge portion, which will be described later.

FIG. 7 is a vertical cross-sectional view showing a state in which the body portion 2 of FIG. 1 is embedded and fixed. In FIG. 7, the main body 2 is placed in a circular embedding hole H drilled in the installation surface G and fixed with a filler F that is solidified after filling the embedding hole H. As shown in FIG. The body portion 2 is installed with the axis of the female screw portion 22 arranged perpendicularly to the installation surface G, and the upper surface thereof is arranged substantially flush with the installation surface G. As shown in FIG.

Further, the filling material F is filled in the embedding hole H so that the upper surface of the filling material F is substantially flush with the installation surface G, and the filling material F in each filling part 23 of the main body part 2 is placed at the opening at the lower end. It is filled from 23d to the opening 23e at the upper end. As the filler F for fixing the embedded member 1, various materials such as mortar, cement, synthetic resin adhesive, etc., which harden from a fluid state can be selected or used in combination.

The body portion 2 is formed in a substantially truncated cone shape with an outer diameter increasing toward the bottom, thereby improving the fixing strength in a state of being embedded in the filler F. As shown in FIG. Specifically, by forming the outer surface of the outer wall portion 26 in an inclined surface shape, the filling material F filled in the embedding hole H and in contact with the outer surface is arranged on the installation surface G side with respect to the outer surface. It is arranged in a certain vertical direction upper part, and the said outer surface and the filler material F are engaged. By engaging the outer surface of the outer wall portion 26 with the filler F in this manner, the resistance of the filler F in the outer wall portion 26 increases when the body portion 2 receives a force directed upward in the vertical direction. As a result, detachment of the main body 2 from the installation surface G is suppressed.

In the body portion 2, the inner side surface 23a of each filling portion 23 on the side of the fastening portion 21 is formed in a shape of an inclined surface directed radially outward from the top to the bottom in the vertical direction. It improves the fixing strength in the buried state. Specifically, each of the inner side surfaces 23a is formed vertically so that the filling material F in contact with each inner side surface 23a is on the installation surface G side with respect to the inner side surface 23a in a state in which the filling portion 23 is filled with the filler F. The inner side surface 23a and the filler F are provided so as to be in a state of being engaged with each other. In this way, by providing each inner side surface 23a as a wedge portion that engages with the filler F, the resistance of the filler F on each inner side surface 23a is reduced when the body portion 2 receives a force directed upward in the vertical direction. , and detachment of the main body portion 2 from the installation surface G is suppressed.

In addition, the inner wall portion 25 is formed so that its plate thickness increases from the top to the bottom in the vertical direction. It functions as a wedge portion that engages with the filler material F that is filled in. That is, the filling material F filled in the filling portion 23 and in contact with the inner side surfaces 23b is arranged vertically above the inner side surfaces 23b on the installation surface G side. The resistance of the filler F on each inner side surface 23b increases when a force directed toward the main body 2 is applied, and detachment of the main body 2 from the installation surface G is suppressed.

8 is a view showing an embodiment of the cylindrical member 5 of the embedded member 1 according to the present invention, FIG. 9 is a front view of FIG. 8, FIG. 10 is a plan view of FIG. 8, and FIG. 10 is a sectional view taken along line AA of FIG. 10, and FIG. 12 is a sectional view taken along line BB of FIG.

The tubular member 5 shown in FIGS. 8 to 12 integrally includes a connecting portion 54 provided in a substantially disc shape and a tubular portion 51 formed in a substantially cylindrical shape by extending downward from the entire circumference of the outer edge thereof. Specifically, the connecting portion 54 and the tubular portion 51 are formed by pressing a single metal plate.

A circular through-hole 55 penetrating vertically is formed in the center of the connecting portion 54 , and the through-hole 55 is sized to allow insertion of a male screw that can be fastened to the female screw portion 22 of the main body 2 . are doing. In addition, a plurality of circular through holes 56 are formed in the connecting portion 54 so as to penetrate in the vertical direction, and four through holes 56 are arranged at equal intervals in the circumferential direction so as to surround the through hole 55 . are doing. In the vicinity of the outer edge of the connecting portion 54, a plurality of substantially fan-shaped through holes 57 penetrating in the vertical direction are formed, and four through holes 57 are arranged at equal intervals in the circumferential direction.

The connecting portion 54 is formed with a thin breaking portion 58 having a thickness smaller than that of other portions of the connecting portion 54 . ing. FIG. 13 is an enlarged view of the vicinity of the broken portion 58 in FIG. The fracture portion 58 is a notch-shaped portion provided in the connection portion 54, and is formed in a groove shape in which the upper surface and the lower surface are recessed inward over the entire width of the connection portion 54 between the through holes 57. ing. The breakage portion 58 is formed during press work for integrally forming the cylindrical portion 51 and the connecting portion 54 .

14 is a longitudinal sectional view showing a state in which the cylindrical member 5 of FIG. 8 is attached to the body portion 2 of FIG. 1. FIG. In the cylindrical member 5 , the positions of the through holes 55 and the female threaded portion 22 are aligned, the through holes 56 are arranged directly above the openings 23 e of the filling portions 23 , and the connection portion 54 is connected to the upper surface of the body portion 2 . is attached to the main body 2 with the lower surface of the . The tubular portion 51 of the tubular member 5 is arranged so as to surround the entire circumference of the upper portion of the main body portion 2 .

FIG. 15 is a longitudinal sectional view showing a state in which the embedded member 1 of FIG. 14 is embedded and fixed. The body portion 2 and the tubular member 5 of the embedded member 1 shown in FIG. It is fixed by a filling material F that is solidified after being filled in the hole H. The body portion 2 is installed with the axis of the female screw portion 22 arranged perpendicular to the installation surface G, and the upper surface of the cylindrical member 5 is arranged substantially flush with the installation surface G. As shown in FIG.

The filling material F is filled in the embedding hole H so that the top surface of the filling material F is substantially flush with the installation surface G. As shown in FIG. Since each filling portion 23 of the body portion 2 communicates with the outside of the embedding hole H through each through hole 56 of the tubular member 5 , air is less likely to accumulate in each filling portion 23 and the inside of each through hole 56 is prevented from accumulating. The filler F can be satisfactorily filled up to. Further, the tubular member 5 is fixed to the filler F with the tubular portion 51 embedded inside the filler F and the upper surface of the connecting portion 54 exposed from the filler F. As shown in FIG.

FIG. 16 is a diagram showing a state in which an installation object P is installed using the embedded member 1 of FIG. 15, and FIG. 17 is an enlarged view of the vicinity of the embedded member 1 of FIG. The embedded member 1 of FIGS. 16 and 17 depicts the fracture 58 of the tubular member 5 as a longitudinal section at an angle that permits illustration.

The installation object P shown in FIGS. 16 and 17 is a so-called marker post used by being installed on or near a road, and a downwardly projecting male screw B is integrally formed on a lower pedestal portion. The installation object P is erected on the installation surface G by screwing the male screw B into the female screw portion 22 of the embedded member 1 embedded and fixed in the filler F. As shown in FIG. 16 and 17, and FIG. 18, which will be described later, are partial cross-sectional views showing the section below the base portion of the installation object P. As shown in FIG.

FIG. 18 is a diagram showing a state in which the embedded member 1 of FIG. 17 has been pulled out from the installation surface G. FIG. When an external force is applied to the installation object P and a strong force is applied to the embedded member 1 through the male screw B so as to pull it out from the installation surface G, as shown in FIG. In some cases, the filler F filled in the embedding hole H cracks into a conical shape and detaches, so-called cone-shaped fracture. In FIG. 18, a tensile force is applied to the embedded member 1 that has been embedded and fixed, and the filler F that has fixed it becomes a conical lump with the lower end of the main body 2 as the tip and detaches from the installation surface G. It shows the state of

18, the filling material F filled in the filling portion 23 is broken so as to break at the position of the opening 23d at the lower end of the filling portion 23. As shown in FIG. In each filling portion 23 of the embedded member 1, the size of the opening 23d at the lower end is larger than that at the upper portion in the cross-sectional shape in the direction perpendicular to the axis of the fastening portion. More specifically, the cross-sectional size of each filling portion 23 is maximized at the opening 23d. By forming each filling portion 23 as described above, the filling material F at the opening 23d is less likely to break, and the embedded member 1 is less likely to come off from the installation surface G, and can be embedded and fixed more firmly. ing. For example, even if the depth of the embedding hole H is shallow and the bottom of the embedding hole H is positioned near the lower surface of the main body 2, the main body 2 is filled with the filling portions 23 formed as described above. It can be firmly fixed in the material F.

When the cone-shaped fracture occurs, the fracture surface D1 around the detached main body 2 tends to occur at a constant angle with respect to the installation surface G. As shown in FIG. The above angle varies depending on the constituent members of the installation surface G, the material of the filler F, and the like. In general concrete, the fracture surface D1 is formed at an angle of 45 degrees with respect to the installation surface. In addition, in materials other than concrete, for example, in the construction material of the installation surface G where anchor nuts etc. are installed and the filler F etc. used for installation of road incidental facilities such as fences and posts, the installation surface G On the other hand, the rupture surface D1 occurs at an angle of approximately 50 degrees or less.

As shown in FIG. 18, when the embedded member 1 with the cylindrical portion 51 arranged so as to surround the upper portion of the body portion 2 is removed from the installation surface G, the breaking surface D1 is aligned with the lower end of the body portion 2. It is formed so as to connect with the lower end of the cylindrical portion 51 . In other words, the embedded member 1 shown in FIG. It is removed so that it is pulled out from the filler F of the.

By creating such a fracture surface D1, even when the embedded member 1 having the cylindrical portion 51 is subjected to a strong external force such that it is detached from the installation surface G, the filling material F outside the cylindrical portion 51 can be removed. It is possible to suppress damage to members constituting the installation surface G outside the embedding hole H and the embedding hole H.

As shown in FIG. 18 , the embedded member 1 is removed from the installation surface G by connecting the fracture surface D 1 starting from the lower end of the main body 2 to the lower end of the cylindrical portion 51 . For this reason, the angle An between the line connecting the lower edge of the main body 2 and the lower end of the cylindrical portion 51 and the installation surface G is made smaller than the angle between the fracture surface generated in the cone-shaped fracture and the installation surface G. By providing it, the rupture surface D1 can be easily connected to the tubular portion 51 . When the angle An is set to be larger than the angle formed by the fracture surface generated in the cone-shaped fracture and the installation surface G, the fracture surface D1 generated starting from the lower end of the main body portion 2 does not connect to the cylindrical portion 51 and the cylindrical portion 51 is formed below the lower end of the hole H, and the fracture surface formed in the embedding hole H tends to be made larger.

In order to facilitate connection of the rupture surface D1 to the cylindrical portion 51, the embedded member 1 has a line extending from the lower edge of the main body portion 2 to the lower end of the cylindrical portion 51 and a line parallel to the installation surface G. It is preferable that the angle An between the fastening portion 21 and the vertical plane with respect to the axis of the female screw portion 22, which is easy to be arranged, is set to a magnitude of 0 degrees or more and 50 degrees or less, more preferably 0 degrees or more and 45 degrees or less. preferable. The embedded member 1 shown in FIG. 18 has an angle An of about 40 degrees between a line connecting the bottom edge of the body portion 2 and the bottom end of the cylindrical portion 51 and a vertical plane to the axis of the female screw portion 22. forming.

In the embedded member 1 shown in FIG. 18, the outer surface of the cylindrical portion 51 is formed to be a smooth surface with little unevenness. By making the outer surface of the tubular portion 51 smooth in this manner, the filler F adhering to the outer surface can be easily peeled off. The fracture surface D1 generated in the filler F is made less likely to spread outward from the outer surface of the tubular portion 51 .

FIG. 19 is a diagram showing the state after the embedded member 1 of FIG. 17 receives an external force. In FIG. 19, the external thread B is unscrewed from the internal thread portion 22 of the embedded member 1, and the installation object P is removed.

FIG. 19 shows a situation in which the embedded member 1, which received the force from the installation object P in FIG. there is Specifically, in the embedded member 1 shown in FIG. 19, the portion of the main body 2 on the right side in the figure has moved slightly upward in the vertical direction. When the body portion 2 moves in this manner, the embedded member 1 is pulled from the cylindrical member 5 by the tensile force between the body portion 2 moving upward and the cylindrical portion 51 embedded in the filler F. The breaking portion 58 may break. FIG. 19 shows a state in which the breaking portion 58 arranged on the right side of the drawing is broken.

As shown in FIG. 19, when the movement of the main body 2 is slight, damage such as cracks may not occur on the surface of the filler F embedding and fixing the main body 2, and damage may occur. However, it may be difficult to visually confirm that the cracks are extremely small. Even in a situation where it is difficult to confirm damage to the filling material F, the embedded member 1 confirms whether or not the main body 2 has moved within the filling material F by confirming whether or not each fracture portion 58 provided in the connecting portion 54 has been broken. can be confirmed. In this way, it is possible to easily confirm whether or not the body portion 2 has moved, so that it is easy to determine the necessity of replacing the embedded member 1 when the installation object P receives an external force.

It should be noted that the embedded member 1 according to the present invention is not limited to the above embodiment, and various modifications are possible without departing from the gist of the present invention.

For example, in the embedded member 1, the inner side surface 23a and the inner side surface 23b of the filling portion 23 of the main body portion 2 are formed into inclined surfaces that are inclined with respect to the axial direction of the female thread portion 22, thereby filling the main body portion 2. Although it is provided so as to function as a wedge portion for more firmly fixing in the material F, it is not limited to this.

For example, instead of forming the inner side surface 23a and the inner side surface 23b in the shape of an inclined surface, a stepped portion is provided in a part thereof, and the filling material F in contact with the stepped portion is placed on the installation surface G with respect to the stepped portion. By arranging it on the side, it may be put into an engaged state and function as the wedge part.

In the embedded member 1, the fracture portion 58 of the cylindrical member 5 is formed thin by providing the connection portion 54 in a cutout shape, but the present invention is not limited to this. It may be formed in another form that can be broken at the breaking portion 58 . For example, the connecting portion 54 between the adjacent through-holes 57 may be provided in a cutout shape, and the breaking portion 58 may be formed in a narrow shape with a smaller width. The fracture portion 58 may be formed in the shape of a notched hole.

1 Buried member 2 Main body 21 Fastening part 22 Female screw part 23 Filling part 25 Inner wall part 26 Outer wall part 5 Cylindrical member 51 Cylindrical part 54 Connecting part 55 Through hole 56 Through hole 57 Through hole 58 Breaking part F Filling material G Installation surface H Burying hole

Claims (4)

An embedding member arranged in an embedding hole formed in an installation surface and fixed in the embedding hole by a filling material that solidifies after being filled in the embedding hole,
The embedded member has a body portion, and the body portion has a fastening portion formed with an internal thread,
The main body is formed with a hole-shaped filling portion penetrating in a direction along the axis of the female screw portion, and the filling portion is provided so as to be filled with the filling material. Embedded material. 2. The embedded member according to claim 1, wherein the filling part has a lower opening larger than an upper opening in a cross-sectional shape in a direction perpendicular to the axis of the fastening part. The filling portion has an inclined or stepped wedge portion on its inner surface, and the filling material in contact with the wedge portion is arranged on the installation surface side with respect to the wedge portion. The embedded member according to claim 1 or 2, characterized in that A tubular member formed separately from the main body portion, the tubular member comprising a tubular portion surrounding at least an upper portion of the main body portion, and a connection portion connecting the tubular portion and the main body portion,
The embedded member according to any one of claims 1 to 3, wherein the filling material is provided between the inner side surface of the cylindrical portion and the outer side surface of the body portion. .

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