JP5301892B2 - Sleeve holder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sleeve holder which can ensure cover thicknesses from at least two reinforcing bars different in direction. <P>SOLUTION: The sleeve holder for positioning a sleeve S, which is a hollow pipe, relative to the reinforcing bars F in a state ensuring the cover thicknesses is provided with a sleeve mounting portion 11 which is fitted to the outer periphery of the sleeve S and can mount the sleeve S, at least two arm portions 12 which extend from the sleeve mounting portion 11 in at least two different directions and are formed in a length ensuring the cover thickness, and reinforcing bar holding portions 13 for holding and fixing the reinforcing bars F, which are respectively formed at the tip ends of the arm portions 12. By making the reinforcing bar holding portion 13 hold the reinforcing bar F, the sleeve S and the reinforcing bars F are positioned so as to be spaced from each other by the length of the arm portion 12. Each of the arm portions 12 is formed in a length corresponding to the cover thickness, thereby positioning the sleeve S at a position ensuring the cover thickness from the reinforcing bar F. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a sleeve holder for fixing a sleeve, which is a hollow tube for passing piping and wiring to a reinforcing bar (rebar) installed at the time of concrete placing work in a building work or the like, to a desired position. .

  In the building construction of reinforced concrete or the foundation work thereof, a through-hole for passing piping and wiring through the concrete placement portion is formed. This through hole is formed by placing concrete in advance after placing a paper or resin sleeve in a predetermined position. In addition, it is necessary that the through hole is formed at a certain distance (so-called “cover thickness”) from the reinforcing bars arranged in terms of strength and the like. For this reason, when the sleeve is installed, the distance from the reinforcing bar to the sleeve is measured while measuring with a measure or the like.

On the other hand, there is known a sleeve fixture that is attached to a reinforcing bar to secure a cover thickness from the reinforcing bar and simultaneously holds the sleeve (Patent Document 1).
JP 2002-47796 A

  However, the sleeve fixing device described in Patent Document 1 can secure the cover thickness from one reinforcing bar, but in order to ensure the cover thickness from two different directions of the reinforcing bars arranged vertically and horizontally, 2 It is necessary to use two sleeve fixtures. In other words, it is necessary to prepare sleeve fixing devices according to the number of directions in which the cover thickness is ensured, and to individually mount them on the sleeves, which incurs labor and cost.

  In view of these circumstances, it is an object of the present invention to provide a sleeve holder capable of ensuring a cover thickness from reinforcing bars in at least two different directions.

In order to achieve the above object, a sleeve holder according to claim 1 is formed at a sleeve mounting portion that can be fitted to the outer periphery of the sleeve and mount the sleeve, an arm portion that extends from the sleeve mounting portion, and a tip of the arm portion. A rebar holding portion for holding and fixing the rebar, and the sleeve mounting portion is formed in an arc shape having an opening, and arm portions extend from both ends of the sleeve mounting portion, The sleeve mounting portion is bent in the radial direction of the sleeve mounting portion and extends linearly, and extends in a direction orthogonal to each other when the sleeve is mounted, and each arm portion includes a sleeve mounted on the sleeve mounting portion and It is formed in a length that ensures a cover thickness between the reinforcing bar gripped by the reinforcing bar gripping part. Thereby, the cover thickness from the two reinforcing bars extending in the orthogonal direction can be secured. Further, the sleeve can be attached to the sleeve attaching portion through the opening.

According to a second aspect of the present invention, the sleeve holder is formed by bending a rod-shaped metal member. Thereby, a sleeve can be formed only by bending.
According to a third aspect of the present invention, the reinforcing bar gripping portion extends in a direction orthogonal to the extending direction of the arm portion.

  According to a fourth aspect of the present invention, the sleeve mounting portion of the sleeve holder is formed with a stable support portion that extends in the axial direction of the sleeve mounted on the sleeve mounting portion. Thus, the sleeve is instructed in a stable state by the stable support portion.

According to a fifth aspect of the present invention, the reinforcing bar gripping portion includes a gripping portion along an outer periphery of a reinforcing bar and a guide portion that guides the reinforcing bar to the gripping portion, and the reinforcing bar is gripped between the gripping portion and the guiding portion. A retaining portion for preventing the detachment of the reinforcing bar from the finished state is formed .

  According to the sleeve holder of the present invention, at least the cover thickness from the reinforcing bars in two different directions can be ensured.

Hereinafter, an embodiment of a sleeve holder embodying the present invention will be described with reference to FIGS.
FIG. 1 is a perspective view of the sleeve holder of the present embodiment, FIG. 2A is a front view thereof, and FIG. 2B is a side view thereof. The sleeve holder is formed as a whole by bending a single bar-shaped metal member having elasticity, for example, an iron bar. The sleeve holder 11 is mainly formed of an arc-shaped sleeve mounting portion 11 and the sleeve mounting portion 11 from both ends thereof. The arm portion 12 extends outward in the radial direction, and a reinforcing bar gripping portion 13 formed at the tip of the arm portion 12.

  The sleeve mounting portion 11 is formed in an arc shape over about ¾ of the circumference, and the remaining about ¼ circumference serves as an opening 14 to communicate the inside and outside of the sleeve mounting portion 11. The sleeve S is inserted into the sleeve mounting portion 11 through the opening 14 and is fitted at the arcuate portion. In the center of the sleeve mounting portion 11, Z-shaped stable support portions 15 that protrude in a mountain shape toward both axial sides of the sleeve S are formed. Since the peripheral surface of the sleeve S mounted on the sleeve mounting portion 11 is held in the circumferential direction by the sleeve mounting portion 11, the sleeve S may tilt or swing in the axial direction with the sleeve mounting portion 11 as a fulcrum. . The stable support portion 15 prevents the sleeve S from being tilted or shaken in the axial direction by adding axial support in addition to the circumferential holding of the sleeve S by the sleeve mounting portion 11.

  The sleeve mounting portion 11 is formed to have substantially the same diameter as the diameter of the sleeve S to be mounted, and elastically holds the sleeve S in the circumferential direction. Before the sleeve S is mounted, the opening 14 of the sleeve mounting portion 11 is deformed in a narrowing direction, and when the sleeve S is mounted, the sleeve S is fixed with a certain elastic force by the elastic restoring force of the sleeve mounting portion 11. When sandwiched, the mounting of the sleeve S becomes more stable. As described above, when the opening 14 of the sleeve mounting portion 11 is deformed in a narrowing direction, the arm portions 12 do not extend in a direction orthogonal to each other, but the angle between the arm portions 12 is an acute angle. In the state where the sleeve S is mounted, both arm portions 12 only need to extend in the orthogonal direction.

  Arm portions 12 extend from both ends of the sleeve mounting portion 11. The arm portion 12 extends linearly from both ends of the sleeve mounting portion 11 in the radial direction with respect to the arc of the sleeve mounting portion 11, and the extending directions of the arm portions 12 are orthogonal to each other. The length of each arm part 12 is formed so that the cover thickness h is ensured (FIG. 2). The cover thickness h here refers to a certain distance that must be ensured in design as the distance from the outer peripheral surface of the sleeve S attached to the sleeve holder to the reinforcing bar F gripped by the reinforcing bar gripping part 13. . Further, the length with which the cover thickness h is secured with respect to the arm portion 12 means that the distance from the outer peripheral surface of the sleeve S attached to the sleeve holder to the reinforcing bar F is equal to or greater than the cover thickness. In the embodiment of FIG. It can be said that the length of the arm part and the cover thickness are almost equal. On the other hand, for example, when the sleeve mounting portion 11 is thick, the thickness of the sleeve mounting portion 11 also contributes to securing the cover thickness, and therefore the length of the arm portion 12 is shorter than the cover thickness. There is. Therefore, the length of the arm portion 12 and the cover thickness are not necessarily synonymous.

  A reinforcing bar gripping portion 13 is formed at the tip of each arm portion 12. The reinforcing bar gripping part 13 includes a gripping part 16 that is formed in an arc shape along the outer periphery of the reinforcing bar F, and a guide part 17 that is formed continuously from the gripping part 16 at the tip of the gripping part 16 and guides the reinforcing bar F to the gripping part 16. It consists of.

  The grip portion 16 is formed over an angle range (for example, 240 degrees) that exceeds a semicircle, has a substantially arc shape as a whole and includes a straight line, and has an opening formed at a position facing the sleeve mounting portion 11. The tip of the gripping part 16 that wraps around the arm part 12 serves as a retaining part 18 that prevents the reinforcing bar F from detaching from the reinforcing bar gripping part 13. The guide part 17 formed at the tip of the grip part 16 extends non-parallel to the arm part 12 so that the distance from the arm part 12 increases as the distance from the grip part 16 increases, and the grip part 16 and the guide part 17 are viewed from the side. To form an R shape (FIG. 2B).

Next, the usage method of this sleeve holder is demonstrated.
Before placing the sleeve holder on the reinforcing bar F, the sleeve S is mounted on the sleeve holder. First, the sleeve S is inserted into the sleeve mounting portion 11 through the opening 14 between the one arm portion 12 and the other arm portion 12. At this time, it is preferable to determine the positional relationship between the sleeve S and the sleeve S so that the axial intermediate portion of the sleeve S is attached to the sleeve holder. It is also possible to correct the positional relationship between the two by moving them relative to each other.

  Since the sleeve mounting portion 11 is formed in an arc shape over about 3/4 of the circumference of the sleeve S, the opening portion 14 formed between the arm portion 12 and the arm portion 12 is larger than the diameter of the sleeve S. The sleeve S is short and cannot pass through as it is (FIG. 3A). However, since the sleeve holder is formed to be elastically deformable, when the sleeve S is inserted, the sleeve S is positioned between the arm portion 12 and the arm portion 12 and is directly directed toward the opening portion 14. By pushing in, both the arm parts 12 and 12 are pressed by the sleeve S, and the opening part 14 is expanded while expanding in a direction away from each other (FIG. 3B). Then, the sleeve S is inserted into the sleeve mounting portion 11 so as to get over the widened opening 14 (FIG. 3C).

  Further, after the sleeve S passes through the opening portion 14, the sleeve mounting portion 11 returns to its original shape by its own elastic restoring force, and the outer periphery of the sleeve S is clamped by the inner periphery of the sleeve mounting portion 11. When the sleeve mounting portion 11 is deformed in the direction in which the opening 14 is narrowed in advance, the sleeve S can be clamped with a constant urging force by the elastic restoring force when the sleeve S is held.

  Subsequently, the sleeve holder to which the sleeve S is attached is locked to the reinforcing bar F arranged at the construction site. Reinforcing bars F are arranged vertically and horizontally at the construction site, and a sleeve holder is spanned between two reinforcing bars F extending in a direction orthogonal to each other. Specifically, an approximate position on the reinforcing bar F that is separated from the intersection of the reinforcing bars F arranged orthogonally by the length of the arm portion 12, that is, the length of the cover thickness, is specified with a register, and the specified reinforcing bar is specified. The reinforcing bar gripping portion 13 formed at the tip of one arm portion 12 of the sleeve holder is gripped at the position F.

  In the method of gripping the reinforcing bar gripping part 13 to the reinforcing bar F, first, the reinforcing bar is positioned between the guide part 17 and the arm part 12 (FIG. 4A). In this state, since the opening diameter between the gripping part 16, in particular, the retaining part 18 and the arm part 12 is smaller than the diameter of the reinforcing bar F, the reinforcing bar F cannot immediately move into the gripping part 16. In this state, the arm portion 12 is pulled toward the sleeve mounting portion 11 (FIG. 4B). Then, the reinforcing bar F moves relative to the gripping part 16 side, and with the movement of the reinforcing bar F, the retaining part 18 of the gripping part 16 is elastically deformed in the diameter-expanding direction and opens in the direction of increasing the opening. It is inserted into the gripping part 16 over the retaining part 18. After the reinforcing bar F is inserted into the gripping part 16, the gripping part 16 returns to its original shape by its own elastic restoring force, and the opening between the retaining part 18 and the arm part 12 becomes small, so that the reinforcing bar F The retaining is achieved (FIG. 4C).

  Similarly, the reinforcing bar F is gripped by the reinforcing bar gripping part 13 formed at the tip of the other arm part 12. Thereafter, the position of the reinforcing bar gripping part 13 on the reinforcing bar F is readjusted so that each arm part 12 extends in a direction orthogonal to the reinforcing bar F. By this sleeve holder, the sleeve S is positioned in a state in which the cover thickness h from the reinforcing bar F extending in the orthogonal direction is simultaneously secured.

According to the sleeve holder of the above embodiment, the following effects can be obtained.
(1) In the sleeve holder of the above embodiment, since the arm portion 12 is formed to a length that ensures the cover thickness h, the sleeve holder that holds the sleeve S is attached to the reinforcing bar F so that the sleeve can be removed from the reinforcing bar F. A cover thickness h up to S can be secured.

  (2) The sleeve holder has arm portions 12 extending in two different directions, and a reinforcing bar gripping portion 13 is formed at the end of each arm portion 12. For this reason, the cover thickness h from the two reinforcing bars F can be ensured by causing each reinforcing bar F to hold one sleeve holder. In particular, the two arm portions 12 extend in a direction orthogonal to each other, and it is possible to secure a cover thickness h from the two reinforcing bars F extending in the orthogonal direction.

  (3) A sleeve holder is formed by bending a single bar. For this reason, manufacture is easy and inexpensive. Further, since the size of the sleeve mounting portion 11 and the length of the arm portion 12 can be changed even for the sleeve S and the reinforcing bar F having a different cover thickness h, the shape and size can be easily handled.

  (4) Since the two arm portions 12 are formed at both ends of the opening portion 14 and the sleeve mounting portion 11 can be elastically deformed, the opening portion 14 is elastic together with the arm portions 12 that come into contact with the sleeve S when the sleeve S is pushed in. The opening 14 is deformed and expanded, and finally the opening 14 expands to a size allowing the sleeve S to pass therethrough. Further, after the sleeve S is inserted, the sleeve mounting portion 11 returns to its original shape by its own elastic restoring force, so that the operation of mounting the sleeve S on the sleeve mounting portion 11 is easy.

  (5) Since the sleeve mounting portion 11 is formed with the stable support portions 15 protruding on both sides in the axial direction of the sleeve S, the sleeve S is stabilized in the axial direction even if the sleeve mounting portion 11 is formed using a bar. Can be held in a state. Moreover, since the stable support part 15 is also formed by bending a bar, it is not necessary to form it separately.

  (6) The sleeve mounting portion 11 is formed in accordance with the diameter of the sleeve S to be mounted, but if the opening 14 is deformed in advance so as to be narrowed before mounting, the sleeve S is mounted on the sleeve mounting portion 11. In this state, the sleeve S is clamped with a constant urging force by the elastic restoring force, and can be held more effectively. Further, since the diameter of the sleeve mounting portion 11 can be changed by the elastic force of the sleeve mounting portion 11, it can be mounted even when the sleeve S to be mounted is not substantially the same diameter as the sleeve mounting portion 11. .

  (7) The reinforcing bar gripping part 13 has a gripping part 16, and the gripping part 16 has a clip shape having an arc formed over an angular range (for example, 240 degrees) exceeding a semicircle. For this reason, the tip of the gripping part 16 that wraps around the arm part 12 functions as a retaining part 18 that prevents the gripped rebar F from coming off. Further, the opening between the retaining portion 18 that engages and disengages the reinforcing bar F with respect to the gripping portion 16 and the arm portion 12 is formed to face the sleeve mounting portion 11. Therefore, even when a pulling force toward the sleeve mounting portion 11 acts on the gripping portion 16, the reinforcing bar F does not come off from the gripping portion 16.

  (8) Since the guide part 17 is formed in the reinforcing bar gripping part 13, the reinforcing bar F can be arranged between the guiding part 17 and the arm part 12 and moved to the gripping part 16 side when the reinforcing bar F is mounted. The gripping work of the reinforcing bar F with respect to the reinforcing bar gripping part 13 is easy.

In addition, you may change the said embodiment as follows.
In the sleeve holder of the above embodiment, the sleeve mounting portion 11 is formed in an arc shape having the opening portion 14, but the arm portion 22 is arranged so as to cross as shown in FIG. It may be adopted. Even in this case, the cover thickness h from the two reinforcing bars F (not shown) can be secured with one sleeve holder. In addition, the sleeve S (not shown) in this modified example is mounted by expanding the sleeve mounting portion 21 by moving the tips of both arm portions 22 toward each other so that the sleeve S is mounted from the end in the axial direction. What is necessary is just to employ | adopt the method of making it insert in the part 21. FIG. The configuration of the sleeve holder of the above embodiment is adopted except that the configurations of the sleeve mounting portion 21 and the arm portion 22 are changed.

  ○ In the reinforcing bar gripping part 13 formed at the tips of both arm parts 12 of the sleeve holder of the above embodiment, the opening between the retaining part 18 for engaging and disengaging the reinforcing bar F and the arm part 12 is opposed to the sleeve mounting part 11. However, the orientation of one or both reinforcing bar gripping portions 13 may be changed. The reinforcing bar gripping part 23 shown in FIG. 6A changes the direction by 180 degrees with respect to the above embodiment, and the opening for engaging / disengaging the reinforcing bar F with respect to the gripping part 26 faces the front end side in the extending direction of the arm part 12. The guide portion 27 that follows the retaining portion 28 also faces the distal end side in the extending direction of the arm portion 12. In this example, the portion of the arm portion 12 that is closer to the tip than the reinforcing bar F does not contribute to securing the cover thickness h, so the arm portion 12 needs to be formed longer than the cover thickness h. There is.

  Further, as shown in FIG. 6B, the direction of the reinforcing bar gripping part 33 may be orthogonal to the extending direction of the arm part 12 by changing the direction by 90 degrees with respect to the above embodiment. Similarly, the guide portion 37 following the grip portion 36 and the retaining portion 38 is formed in a direction orthogonal to the arm portion 12. Accordingly, even when there is no space behind the reinforcing bar F (upward in the drawing), it is easy to attach the reinforcing bar gripping part 33 to the reinforcing bar F, and the reinforcing bar gripping part 33 is difficult to be detached from the reinforcing bar F. .

  In the sleeve holder of the above embodiment, one stable support portion 15 is provided in the sleeve mounting portion 11, but it may be provided at a plurality of locations (for example, two locations separated by 90 degrees or 180 degrees) on the sleeve mounting portion 11, Further, the stable support portion 15 may be omitted. When the stable support portion 15 is omitted, the axial holding stability of the sleeve S is lowered. For example, a member having a larger diameter is used as a metal bar used for the sleeve holder, and the sleeve S formed by the sleeve mounting portion 11 is used. By strengthening the clamping force, the axial holding stability of the sleeve S can be ensured by the clamping force. Further, the sleeve mounting portion 11 can be stably held by supporting the vicinity of the center of the sleeve S in the axial direction with the sleeve mounting portion 11.

  In the sleeve holder of the above embodiment, the metal rod was bent and formed, but the sleeve holder may be formed in a shape having a certain plate width. As shown in FIGS. 7A and 7B, the holding stability of the sleeve S in the sleeve mounting portion 41 is increased by forming a material having a certain plate width, for example, a metal plate by bending. It becomes. Further, in this case, by applying a twist to the arm part 42, the reinforcing bar gripping part 43 spreads in the width direction, so that the reinforcing bar F can be gripped easily and with increased stability.

  ○ The material of the sleeve holder is not limited to metal, but may be other materials such as resin. Even a sleeve holder formed of resin can exhibit the same effect as metal. In the case of resin molding, since the molding is performed using a mold (injection molding, extrusion molding, etc.), it is possible to form the sleeve mounting portion wide or to form a stable holding portion on the sleeve mounting portion. .

  The number of arm parts should just be two or more, and may have three or four arm parts. In addition, since each arm part is spanned in the state which ensured the cover thickness between several reinforcing bars extended orthogonally or in parallel, it is preferable to form so that it may extend in the direction orthogonal to the reinforcing bar to hold | grip.

  In the case where there are two arm portions 12 formed on the sleeve holder, they may be formed so as to extend in directions different by about 180 degrees, even if they are not orthogonal directions. In this case, as schematically shown in FIG. 8, the cover thickness h from the two reinforcing bars F extending in parallel can be ensured.

In the above embodiment, the lengths of the two arm portions 12 are the lengths corresponding to the cover thickness h, but the lengths of the arm portions 12 do not have to be the same and may be different.
The arm portion 12 is not limited to all extending in a different direction from the sleeve mounting portion 11 as a starting point, and the other arm portion extends in the direction different from the extending direction of the arm portion 12 from the middle of one arm portion 12. 12 may branch. Such a configuration can be easily adopted when the sleeve holder is formed of a wide plate or resin.

  (Circle) you may form so that attachment of the arm part 12 and the reinforcing-bar grip part 13 with respect to the sleeve mounting part 11 is possible. The sleeve mounting portion 11 is formed in a circular arc shape with a metal plate, and is formed into four locking portions (for example, screw holes) at equal intervals, and screwed into the arm member and the reinforcing bar gripping portion formed with a thread at the base end. You may comprise. Thereby, the position and number of the arm parts to be used can be changed.

  In the above-described embodiment, the reinforcing bars F on which the two arm portions 12 of the sleeve holder are gripped are two different reinforcing bars extending in the orthogonal direction (FIG. 1 and the like), but the reinforcing bars F to be fixed to the sleeve holder are This arrangement is not limited to this. For example, with respect to a shear reinforcing bar arranged at a construction site in a state where a single reinforcing bar F is bent in a V-shape or a U-shape, a V-shaped valley or a U-shaped mountain is sandwiched between them. It is also possible to attach the sleeve S by gripping and fixing each arm portion 12 of the sleeve holder on both sides of the sandwich.

Next, technical ideas that can be grasped from the above-described embodiment and other examples will be described below together with their effects.
(A) the reinforcement grip portion is absent sleeve holder has retaining portion to prevent separation of the reinforcing bars from the state holding the rebar is formed. According to this, it is possible to prevent the reinforcing bar from being detached from the reinforcing bar gripping part after the reinforcing bar is gripped.

(B) the reinforcement grip portion is formed with an opening for introducing the reinforcing bars to the grip portion, the opening is away Reeve holder is formed opposite to the sleeve mounting portion. According to this, even when a force in the sleeve mounting portion direction acts on the reinforcing bar gripping portion, the reinforcing bar does not come off.

The perspective view of the sleeve holder which concerns on this embodiment (A) is the same front view, (b) is the same side view. Explanatory drawing showing the sleeve mounting method to the sleeve mounting part, (a) before mounting, (b) during mounting work, (c) at the end of mounting Explanatory drawing showing how to attach the reinforcing bar to the reinforcing bar gripping part, (a) before installation, (b) during installation work, (c) at the end of installation Perspective view of another embodiment The figure which shows other embodiment of a reinforcing-bar grip part, (a) is one example of a change, (b) is another example of a change. (A) is a perspective view of other embodiment, (b) is explanatory drawing which shows the mounting state Schematic diagram showing another embodiment of the arm portion

Explanation of symbols

  11, 21, 41 .. Sleeve mounting part, 12, 22, 42 .. Arm part, 13, 23, 33, 43 .. Rebar gripping part, 14 .. Opening part, 15 .. Stable support part, 16. Gripping part, 17 ·· Guide part, 18 ·· Retaining part, F ·· Rebar (bar arrangement), h ·· Cover thickness, S ·· Sleeve

Claims (5)

A sleeve mounting portion that fits on the outer periphery of the sleeve and can be attached to the sleeve, an arm portion that extends from the sleeve mounting portion, and a rebar gripping portion that is formed at the tip of the arm portion and grips and fixes the rebar,
The sleeve mounting portion is formed in an arc shape having an opening, and arm portions extend from both ends thereof,
The both arm portions are bent in the radial direction of the sleeve mounting portion from the both end portions and extend linearly, and extend in directions orthogonal to each other when the sleeve is mounted,
A sleeve holder characterized in that each arm portion is formed in a length that ensures a cover thickness between a sleeve mounted on the sleeve mounting portion and a reinforcing bar gripped by the reinforcing bar gripping portion. The sleeve holder according to claim 1, wherein the sleeve holder is formed by bending a rod-shaped metal member. The sleeve holder according to claim 2 , wherein the reinforcing bar gripping part extends in a direction orthogonal to the extending direction of the arm part .   The stable mounting part extended in the axial direction of the sleeve with which the sleeve mounting part of the said sleeve holder was mounted in the sleeve mounting part is formed, The Claim 1 thru | or 3 characterized by the above-mentioned. Sleeve holder. The reinforcing bar gripping part includes a gripping part along the outer periphery of the reinforcing bar, and a guide part for guiding the reinforcing bar to the gripping part,
The retaining part for preventing the detachment of the reinforcing bar from a state where the reinforcing bar is gripped is formed between the gripping part and the guide part, according to any one of claims 1 to 4. Sleeve holder.

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