JP2022066710A - Mortar holder serving as connector - Google Patents

Mortar holder serving as connector Download PDF

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JP2022066710A
JP2022066710A JP2020175210A JP2020175210A JP2022066710A JP 2022066710 A JP2022066710 A JP 2022066710A JP 2020175210 A JP2020175210 A JP 2020175210A JP 2020175210 A JP2020175210 A JP 2020175210A JP 2022066710 A JP2022066710 A JP 2022066710A
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mortar
connector
locking portion
catcher
skin
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JP7399483B2 (en
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修一 諌山
Shuichi Isayama
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SHOKI KK
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Abstract

To provide a mortar holder serving as a connector capable of remarkably enhancing the holding force of mortar applied to the surface of skeleton concrete, excellent in fire resistance as well as aging deterioration of the skeleton concrete, and not losing the mortar holding force even after the occurrence of fire.SOLUTION: A mortar holder serving as a connector A consists of: a metallic skin catcher 40 connected to a separation bolt 70 that is set inside a form 71 for placing concrete; a resin-made connector part 1 to which the skin catcher 40 is attached and which is embedded in a skeleton concrete 60, and in which an opposite surface 6 to the form 71 is exposed to a surface 61 of the skeleton concrete 60; a support frame 30 attached to the connector part 1, abutting on an inner surface of the form 71, and surrounding a space between the inner surface and the opposite surface 6 of the connector part 1 to the inner surface to form a closed space H; and a metal locking part 50 extending from the skin catcher 40 in the closed space H and a holding mortar 63 applied to the surface 61 of the skeleton concrete 60.SELECTED DRAWING: Figure 1

Description

本発明は、型枠の内側に架設されたセパボルトと、型枠の外側に配置された横端太材保持用の固定部材に挿通された型枠締付用ボルトとを連結するコネクターとして機能すると共に、対経年劣化（例えば、塩害や酸性雨）、耐火性に優れ、火事の後でも躯体コンクリートの表面に塗布された硬化後のモルタルを保持するコネクター兼用モルタル保持具に関する。 The present invention functions as a connector for connecting a separate bolt erected inside the formwork and a formwork tightening bolt inserted into a fixing member for holding a horizontal end thick material arranged outside the formwork. At the same time, the present invention relates to a mortar holder that also serves as a connector and holds the cured mortar applied to the surface of the skeleton concrete even after a fire, which is excellent in deterioration against aging (for example, salt damage and acid rain) and fire resistance.

コンクリート構造物は、通常、次のようにして造られる。まず、コンクリートの打設スペースを明けて２枚の型枠を配置し、その間に一定間隔で多数のセパボルトを配置し、上記２枚の型枠をセパボルトに固定する。次に型枠間に形成された打設スペースにコンクリートを流し込み、該打設スペースを充填する。そして、コンクリートが硬化した後、セパボルトをコンクリート内に残置したまま型枠を取り外す。 Concrete structures are usually constructed as follows. First, two formwork are placed after opening the concrete casting space, and a large number of separate formwork are placed between them at regular intervals, and the above two formwork are fixed to the separate formwork. Next, concrete is poured into the casting space formed between the formwork to fill the casting space. Then, after the concrete has hardened, the formwork is removed while leaving the sepabolt in the concrete.

型枠を外した後の打ち放し状態の躯体コンクリートの表面には多数の様々な形状の穴が現れ、そのままでは外観が悪いため、一般的には表面仕上げとしてモルタルが一定厚さに塗布される。しかし、後から塗布されたモルタルは、躯体コンクリートと異なり亀裂を生じ、そこから雨水が浸透し、更にはその凍結と融解の繰り返しによってその塗布面において躯体コンクリートの表面との間に部分的に膨れや剥離を生じやすい。そして、建物に掛かる振動や風・地震などの外力や経時劣化により該剥離が次第に拡大して行く。そして遂には剥離部分に周囲に亀裂が生じ、最終的にはその剥離部分が躯体コンクリートの表面から剥落する。タイル張りの場合は剥離モルタルとそれに接着したタイルが一体となって剥落する。このような剥落事故は非常に危険なため、従来からこのような剥落事故を防止する対策が種々提案されている（特許文献１、２）。 Since many holes of various shapes appear on the surface of the exposed skeleton concrete after removing the formwork and the appearance is poor as it is, mortar is generally applied to a certain thickness as a surface finish. However, unlike the skeleton concrete, the mortar applied later causes cracks, from which rainwater permeates, and further, due to repeated freezing and thawing, the mortar partially swells between the surface of the skeleton concrete and the coated surface. Or peeling easily. Then, the peeling gradually expands due to vibration applied to the building, external force such as wind and earthquake, and deterioration over time. Finally, a crack is generated around the peeled portion, and finally the peeled portion is peeled off from the surface of the skeleton concrete. In the case of tiles, the peeling mortar and the tiles adhered to it are peeled off together. Since such a peeling accident is extremely dangerous, various measures for preventing such a peeling accident have been conventionally proposed (Patent Documents 1 and 2).

特許文献１に記載のコネクター兼用モルタル保持具は上記モルタルの剥落事故防止対策の１つで、セパボルトに装着して使用されるコネクターをモルタル保持具として兼用したもので、躯体コンクリートの表面部分に一定間隔で埋設されて使用される。このコネクター兼用モルタル保持具の表面は、躯体コンクリートの表面に露出しており、この露出面であるモルタル塗布面にループ状の係止部が多数設けられている。
モルタル塗布時には、モルタルがループ状の係止部内に入り込んで、係止部がモルタルに一体的に埋設されることでアンカー効果を果たし、モルタルの剥落を防止している。そして、経年劣化（例えば、台風などによる海水の飛散による海岸近くの建物のコンクリートの劣化、即ち、塩害や酸性雨）で躯体コンクリートの表面と一部のモルタルとの間に隙間が発生し、上記のようにモルタルの一部に剥離が発生しても、該剥離部分においてモルタルに埋設されている係止部がこれを支え、剥離部分の剥落を回避している。 The connector-combined mortar holder described in Patent Document 1 is one of the measures to prevent the mortar from falling off, and the connector used by attaching to the sepabolt is also used as the mortar holder. It is buried and used at intervals. The surface of the connector-combined mortar holder is exposed on the surface of the skeleton concrete, and a large number of loop-shaped locking portions are provided on the exposed surface of the mortar coating surface.
When the mortar is applied, the mortar enters the loop-shaped locking portion, and the locking portion is integrally embedded in the mortar to fulfill the anchor effect and prevent the mortar from peeling off. Then, aged deterioration (for example, deterioration of the concrete of the building near the coast due to the scattering of seawater due to a typhoon, that is, salt damage or acid rain) causes a gap between the surface of the skeleton concrete and a part of the mortar. Even if peeling occurs in a part of the mortar as in the above, the locking portion embedded in the mortar at the peeled portion supports it and prevents the peeled portion from peeling off.

特許文献２に記載のモルタル保持具は、金属板をプレス成形したもので、中心にねじ孔を有する円形基板と、円形基板より直径の大きい係合リングと、基板から放射状に延びて係合リングに繋がっている複数の短冊片状の接続片とを備えている。このモルタル保持具によるモルタル施工は、硬化した躯体コンクリートの表面に所定の間隔で装着穴をあけ、モルタル保持具の円形基板のねじ孔にネジを挿入し、このモルタル保持具を躯体コンクリートの表面にネジ締着し、最後に生モルタルを躯体コンクリートの表面に塗布してモルタル保持具を生モルタル内に埋設させ、生モルタルを硬化させることによって行われる。 The mortar holder described in Patent Document 2 is a press-molded metal plate, and has a circular substrate having a screw hole in the center, an engaging ring having a diameter larger than that of the circular substrate, and an engaging ring extending radially from the substrate. It is equipped with a plurality of strip-shaped connection pieces connected to. In mortar construction with this mortar holder, mounting holes are made at predetermined intervals on the surface of the hardened skeleton concrete, screws are inserted into the screw holes of the circular substrate of the mortar holder, and this mortar holder is placed on the surface of the skeleton concrete. This is done by screw tightening and finally applying the raw mortar to the surface of the skeleton concrete, embedding the mortar holder in the raw mortar, and hardening the raw mortar.

特開２０００―１６０８３６号公報Japanese Unexamined Patent Publication No. 2000-160836 特開２０１８―０９１０５８号公報Japanese Unexamined Patent Publication No. 2018-091058

特許文献１において、剥離部分の剥落を回避しているのは、上記のように剥離部分のモルタル内に埋設されている多数の係止部である。処がこのモルタル保持具は全体が樹脂製であるため、例えば火事のように建物の外壁が長時間、高温に曝されるとモルタル保持具が焼失してしまい、モルタル保持能力を失う。しかも火事に会うとモルタルも劣化し、亀裂や膨れが発生し、剥落しやすくなる。 In Patent Document 1, it is a large number of locking portions embedded in the mortar of the peeled portion as described above that the peeling of the peeled portion is avoided. However, since this mortar holder is entirely made of resin, if the outer wall of the building is exposed to high temperature for a long time such as a fire, the mortar holder will be burnt down and the mortar holding ability will be lost. Moreover, when a fire hits, the mortar also deteriorates, cracks and swells occur, and it becomes easy to peel off.

特許文献２では、モルタル保持具が金属製であるから、樹脂と異なり耐火性に優れている。しかしながら、このモルタル保持具は、後付のため、硬化した躯体コンクリートの表面に所定間隔で装着穴を設け、ネジで躯体コンクリートの表面にネジ固定するという作業が必要となる。
加えて、躯体コンクリートは表面から酸性雨や塩害により経年劣化していくため、躯体コンクリートの表面に設けた装着穴の周囲も内部に比べて経年劣化により崩れやすく、ネジ固定では長期のモルタル保持には問題が生じる。更に、特許文献２では、モルタル保持具が金属製であるから、上記のように耐火性に優れているとしても、建物が火事に遭遇すると窓から立ち上る炎によってモルタルや躯体コンクリートの表面が高温に曝され、躯体コンクリートの内部に比べて劣化が進む。その結果、大きな面積でモルタル亀裂やモルタル剥離が発生すると共に多数の装着穴が崩れてネジに対する保持力が低下し、モルタルが埋設されたモルタル保持具ごと大きな塊で剥落する恐れもある。 In Patent Document 2, since the mortar holder is made of metal, it has excellent fire resistance unlike resin. However, since this mortar holder is retrofitted, it is necessary to provide mounting holes on the surface of the hardened skeleton concrete at predetermined intervals and screw-fix it to the surface of the skeleton concrete with screws.
In addition, since the skeleton concrete deteriorates over time due to acid rain and salt damage from the surface, the area around the mounting holes provided on the surface of the skeleton concrete is more likely to collapse due to aging than inside, and screw fixing makes it possible to hold mortar for a long time. Causes problems. Further, in Patent Document 2, since the mortar holder is made of metal, even if the building has excellent fire resistance as described above, when the building encounters a fire, the surface of the mortar or the skeleton concrete becomes hot due to the flame rising from the window. It is exposed and deteriorates more than the inside of the skeleton concrete. As a result, mortar cracks and mortar peeling occur in a large area, many mounting holes are collapsed, the holding force for screws is reduced, and the mortar holder in which the mortar is embedded may be peeled off in a large mass.

本発明は、躯体コンクリートの表面に塗布されたモルタルの保持力を飛躍的に高めると共に、躯体コンクリートの経年劣化は勿論、耐火性にも優れ、火災発生後もモルタル保持力を失わないコネクター兼用モルタル保持具を提供することを課題とする。 INDUSTRIAL APPLICABILITY The present invention dramatically enhances the holding power of the mortar applied to the surface of the skeleton concrete, and has excellent fire resistance as well as aging deterioration of the skeleton concrete. The subject is to provide a cage.

本発明の第１実施形態（請求項１：図１～図５）は、
コンクリート打設用の型枠７１内にセットされるセパボルト７０に連結される金属製のスキンキャッチャー４０と、
前記スキンキャッチャー４０が取り付けられて躯体コンクリート６０内に埋設され、前記型枠７１に対する対向面６が躯体コンクリート６０の表面６１に露出する樹脂製のコネクター部１と、
前記コネクター部１に取り付けられ、前記型枠７１の内面に当接し、前記内面と前記内面に対する前記コネクター部１の対向面６との間の空間を囲繞して閉空間Ｈとする支持枠３０と、
前記閉空間Ｈ内にてスキンキャッチャー４０から延出し、前記躯体コンクリート６０の表面６１に塗布されたモルタル６３を保持する金属係止部５０とで構成されたコネクター兼用モルタル保持具Ａである。 The first embodiment of the present invention (Claim 1: FIGS. 1 to 5) is described.
A metal skin catcher 40 connected to a sepabolt 70 set in a concrete casting formwork 71, and
A resin connector portion 1 to which the skin catcher 40 is attached and embedded in the skeleton concrete 60, and the surface 6 facing the formwork 71 is exposed on the surface 61 of the skeleton concrete 60.
A support frame 30 which is attached to the connector portion 1 and abuts on the inner surface of the mold 71 to surround the space between the inner surface and the facing surface 6 of the connector portion 1 with respect to the inner surface to form a closed space H. ,
It is a connector-combined mortar holder A composed of a metal locking portion 50 extending from the skin catcher 40 in the closed space H and holding the mortar 63 applied to the surface 61 of the skeleton concrete 60.

請求項２は、請求項１に記載のコネクター兼用モルタル保持具Ａにおいて、金属係止部５０にモルタル６３を保持するモルタル係止孔５２が穿設されていることを特徴とする。 The second aspect of the present invention is the connector-combined mortar holder A according to the first aspect, wherein the metal locking portion 50 is provided with a mortar locking hole 52 for holding the mortar 63.

請求項３は（図２(ａ)）、請求項１又は２に記載のコネクター兼用モルタル保持具Ａにおいて、
金属係止部５０は、スキンキャッチャー４０のナット本体部分４０ａから一体的に延出された外鍔状の延出部分であることを特徴とする。 A third aspect of the present invention is the connector-combined mortar holder A according to the first or second aspect (FIG. 2A).
The metal locking portion 50 is characterized by being an outer collar-shaped extending portion integrally extending from the nut main body portion 40a of the skin catcher 40.

請求項４は（図２(ｂ)・図３）、請求項１又は２に記載のコネクター兼用モルタル保持具Ａにおいて、
金属係止部５０は、スキンキャッチャー４０のナット本体部分４０ａとは別体に形成され、前記ナット本体部分４０ａに溶接されて前記ナット本体部分４０ａから一体的に延出されている外鍔状の延出部分であることを特徴とする。 The fourth aspect of the present invention is the connector-combined mortar holder A according to the first or second aspect (FIG. 2B and 3).
The metal locking portion 50 is formed separately from the nut main body portion 40a of the skin catcher 40, and is welded to the nut main body portion 40a and has an outer collar shape integrally extending from the nut main body portion 40a. It is characterized by being an extended portion.

請求項５は（図４）、請求項１又は２に記載のコネクター兼用モルタル保持具Ａにおいて、
金属係止部５０は、スキンキャッチャー４０のナット本体部分４０ａとは別体に形成され、前記金属係止部５０に穿設した取付孔５３ａに前記ナット本体部分４０ａが圧入されて前記ナット本体部分４０ａから一体的に延出されている外鍔状の延出部分であることを特徴とする。 The fifth aspect of the present invention is the connector-combined mortar holder A according to the first or second aspect (FIG. 4).
The metal locking portion 50 is formed separately from the nut main body portion 40a of the skin catcher 40, and the nut main body portion 40a is press-fitted into the mounting hole 53a formed in the metal locking portion 50 to form the nut main body portion. It is characterized in that it is an outer flange-shaped extending portion integrally extending from 40a.

請求項６は（図６）、請求項１～５のいずれかに記載のコネクター兼用モルタル保持具Ａにおいて、前記コネクター部１の前記対向面６に塗布された前記モルタル６３内に埋設される第１係止部１０が前記対向面６に更に設けられていることを特徴とする。 6. (FIG. 6) is the connector-combined mortar holder A according to any one of claims 1 to 5, wherein the connector portion 1 is embedded in the mortar 63 coated on the facing surface 6. 1 The locking portion 10 is further provided on the facing surface 6.

請求項７は（図７）、請求項６に記載のコネクター兼用モルタル保持具Ａにおいて、モルタル６３が塗布されるコネクター部１の対向面６に凹溝２０が形成され、第１係止部１０が、前記凹溝２０を跨ぐように設けられていることを特徴とする。 According to claim 7 (FIG. 7), in the connector-combined mortar holder A according to claim 6, a concave groove 20 is formed on the facing surface 6 of the connector portion 1 to which the mortar 63 is applied, and the first locking portion 10 is formed. However, it is characterized in that it is provided so as to straddle the concave groove 20.

請求項８は（図１３）、請求項７に記載のコネクター兼用モルタル保持具Ａにおいて、前記凹溝２０の内面に凸部２１が形成されていることを特徴とする。 The eighth aspect of the present invention (FIG. 13) is the connector-combined mortar holder A according to the seventh aspect, wherein the convex portion 21 is formed on the inner surface of the concave groove 20.

請求項９（図６）は、請求項１～８のいずれかに記載のコネクター兼用モルタル保持具Ａにおいて、前記閉空間Ｈ内で、支持枠３０から前記第１係止部１０の周囲を取り囲むように、塗布された前記モルタル６３内に埋設されるフック状の第２係止部３５が設けられていることを特徴とする。 9. (FIG. 6) is the connector-combined mortar holder A according to any one of claims 1 to 8, which surrounds the support frame 30 to the periphery of the first locking portion 10 in the closed space H. As described above, a hook-shaped second locking portion 35 embedded in the coated mortar 63 is provided.

本発明の金属係止部５０は金属製のスキンキャッチャー４０から延出している。前記スキンキャッチャー４０は躯体コンクリート６０内に埋設されたセパボルト７０に連結されている。前記金属係止部５０は躯体コンクリート６０の表面６１に塗布された硬化したモルタル６３内に埋設されこれを保持する。
通常時では、この金属係止部５０によってモルタル６３が保持されており、仮にモルタル６３に部分的な剥離Ｋや膨れ、亀裂が発生しても部分的な剥落を生じることがない。
仮に建物が火事に遭った場合、コネクター部１や支持枠３０のような樹脂部分は焼損しても、セパボルト７０や、これに螺着されているスキンキャッチャー４０、及びスキンキャッチャー４０から延出している金属係止部５０が焼損するようなことがなく、火災後もモルタル６３を堅固に保持し続けることが出来る。金属係止部５０を含む金属製のスキンキャッチャー４０の材質を例えば、ステンレスとすることで塩害に対してより優れた効果を発揮する。 The metal locking portion 50 of the present invention extends from the metal skin catcher 40. The skin catcher 40 is connected to a sepabolt 70 embedded in the skeleton concrete 60. The metal locking portion 50 is embedded in a hardened mortar 63 coated on the surface 61 of the skeleton concrete 60 and holds the metal locking portion 50.
In the normal state, the mortar 63 is held by the metal locking portion 50, and even if the mortar 63 is partially peeled off, swelled, or cracked, the mortar 63 is not partially peeled off.
If the building is in a fire, even if the resin parts such as the connector part 1 and the support frame 30 are burnt, they will extend from the sepabolt 70, the skin catcher 40 screwed to it, and the skin catcher 40. The metal locking portion 50 is not burnt out, and the mortar 63 can be firmly held even after a fire. By using, for example, stainless steel as the material of the metal skin catcher 40 including the metal locking portion 50, a better effect against salt damage is exhibited.

本発明のモルタル保持具Ａに第１係止部１０を更に設ければ、更に第１係止部１０の周囲を取り囲むように第２係止部３５を支持枠３０に設けておけば、金属係止部５０とこれらが協働して通常時のモルタル保持力を更に大幅に高めることが出来るし、細かい破片の剥落も防止できる。 If the mortar holder A of the present invention is further provided with the first locking portion 10, and if the second locking portion 35 is further provided on the support frame 30 so as to surround the periphery of the first locking portion 10, the metal The locking portion 50 and these can work together to further significantly increase the mortar holding force during normal operation, and prevent the peeling of fine debris.

また、凹溝２０とこの凹溝２０を跨ぐように第１係止部１０を設けることで、凹溝２０内に入り込んだ硬化モルタル６３を第１係止部１０によって抱持状態で保持することができ、この部分の硬化モルタル６３の破断を大幅に緩和出来る。
加えて、凹溝２０の内面に凸部２１が設けておけば、凹溝２０の開口幅Ｗが狭くなるため、凹溝２０の全体に入り込んだモルタル６３の全体がアンカーの役目を果たし、この部分のモルタル６３破損しない限り抜けず、従来の保持具に比べて本発明の保持具Ａのモルタル保持力を更に大幅に高める。
これに加えて、フック状の第２係止部３５を設けることで、小片に破砕したモルタル６３を吊り下げ状謡で保持できるようになる。 Further, by providing the concave groove 20 and the first locking portion 10 so as to straddle the concave groove 20, the cured mortar 63 that has entered the concave groove 20 is held by the first locking portion 10 in a holding state. It is possible to significantly alleviate the breakage of the cured mortar 63 in this portion.
In addition, if the convex portion 21 is provided on the inner surface of the concave groove 20, the opening width W of the concave groove 20 becomes narrow, so that the entire mortar 63 that has entered the entire concave groove 20 serves as an anchor. The mortar 63 of the portion does not come off unless it is damaged, and the mortar holding force of the holder A of the present invention is further greatly enhanced as compared with the conventional holder.
In addition to this, by providing the hook-shaped second locking portion 35, the mortar 63 crushed into small pieces can be held in a hanging-shaped song.

本発明の第１実施形態のコネクター兼用モルタル保持具の斜視図である。It is a perspective view of the mortar holder also used as a connector of 1st Embodiment of this invention. (ａ)は金属係止部が一体的に形成された金属製のスキンキャッチャーを使用した図１の保持具を斜め上から見た分解斜視図、(ｂ)は金属係止部が別体である金属製のスキンキャッチャーを使用した図１の保持具を斜め上から見た分解斜視図である。(a) is an exploded perspective view of the holder of FIG. 1 using a metal skin catcher in which a metal locking portion is integrally formed, as viewed from diagonally above, and (b) is a separate metal locking portion. It is an exploded perspective view of the holder of FIG. 1 using a certain metal skin catcher seen from diagonally above. 本発明の金属係止部をスキンキャッチャーの本体部分に溶接一体化した縦断面図である。It is a vertical cross-sectional view which weld-integrated the metal locking part of this invention with the main body part of a skin catcher. 本発明の金属係止部をスキンキャッチャーの本体部分に圧入一体化した縦断面図であるIt is a vertical cross-sectional view which integrated the metal locking part of this invention into the main body part of a skin catcher. 本発明の第１実施形態のモルタル保持具の施工手順を示す図面で、（ａ）は型枠の組み立て状況を示す縦断面図、（ｂ）は脱型したときの縦断面図、（ｃ）はモルタルを塗布した状態を示す縦断面図、（ｄ）は火事で樹脂部分が焼失した状態を示す縦断面図である。It is a drawing which shows the construction procedure of the mortar holder of 1st Embodiment of this invention, (a) is the vertical sectional view which shows the assembly state of the formwork, (b) is the vertical sectional view at the time of demolding, (c). Is a vertical cross-sectional view showing a state in which the mortar is applied, and (d) is a vertical cross-sectional view showing a state in which the resin portion is burnt down by a fire. 本発明の第２実施形態のコネクター兼用モルタル保持具の斜視図である。It is a perspective view of the mortar holder also used as a connector of the 2nd Embodiment of this invention. 金属係止部が別体であるスキンキャッチャーを使用した図６の保持具を斜め上から見た分解斜視図である。FIG. 6 is an exploded perspective view of the holder of FIG. 6 using a skin catcher having a separate metal locking portion as viewed from diagonally above. 図６の斜め下から見た分解斜視図である。It is an exploded perspective view seen from the diagonally lower side of FIG. 図６の縦断面図である。It is a vertical sectional view of FIG. 本発明の第２実施形態の樹脂コネクターの変形例１（凸部なし）の平面図である。It is a top view of the modification 1 (without the convex part) of the resin connector of the 2nd Embodiment of this invention. 図１０の正面図と円で囲んだ部分の拡大図である。It is a front view of FIG. 10 and an enlarged view of a portion surrounded by a circle. 図１０の凹溝に凸部を設けない場合で、第１係止部の配列状態を示す部分拡大斜視図例で、（ａ）は千鳥配列、（ｂ）は一列に配列された状態の例示図である。In the example of a partially enlarged perspective view showing the arrangement state of the first locking portion when the concave groove of FIG. 10 is not provided with a convex portion, (a) is an example of a staggered arrangement and (b) is an example of a state of being arranged in a row. It is a figure. 本発明の樹脂コネクターの変形例２（凸部あり）の正面図である。It is a front view of the modification 2 (with a convex portion) of the resin connector of this invention. 本発明の第１係止部の断面形状を示す例で、（ａ）は第１係止部の断面が四角形であること、（ｂ）は三角形であること、（ｃ）は半円形であることを例示する。In an example showing the cross-sectional shape of the first locking portion of the present invention, (a) is a quadrangular cross section of the first locking portion, (b) is a triangle, and (c) is a semicircle. Illustrate that. 凹溝に凸部を設けた場合で、第１係止部の配列状態を示す部分拡大斜視図例で、（ａ）は千鳥配列、（ｂ）は一列に配列された状態の例示図である。It is an example of a partially enlarged perspective view showing an arrangement state of the first locking portion when a convex portion is provided in the concave groove, where (a) is a staggered arrangement and (b) is an example of a state in which they are arranged in a row. .. 本発明の第２係止部を設けた支持枠の平面図である。It is a top view of the support frame provided with the 2nd locking part of this invention. 図１６の縦断面図である。It is a vertical sectional view of FIG. 図１７の丸で囲った部分の部分拡大図である。It is a partially enlarged view of the part circled in FIG. 本発明の第２実施形態のモルタル保持具の施工手順を示す図面で、（ａ）は型枠の組み立て状況を示す縦断面図、（ｂ）は脱型したときの縦断面図、（ｃ）はモルタルを塗布した状態を示す縦断面図、（ｄ）は樹脂部分が消失した状態を示す縦断面図である。It is a drawing which shows the construction procedure of the mortar holder of the 2nd Embodiment of this invention, (a) is the vertical sectional view which shows the assembly state of the formwork, (b) is the vertical sectional view at the time of demolding, (c). Is a vertical cross-sectional view showing a state in which the mortar is applied, and (d) is a vertical cross-sectional view showing a state in which the resin portion has disappeared.

以下、本発明を図示実施例に従って詳述する。コネクター兼用モルタル保持具Ａには、図１に示すように金属係止部５０だけを使用する場合（第１実施形態）と、図６に示すように金属係止部５０と第１，２係止部１０・３５、凹溝２０（凸部２１）のいずれか又はその全てを併用する場合（第２実施形態）とがある。なお、第２実施形態の説明において、第１実施形態と共通する部分は第１実施形態の記載を援用する。 Hereinafter, the present invention will be described in detail according to the illustrated examples. When only the metal locking portion 50 is used as the connector-combined mortar holder A as shown in FIG. 1 (first embodiment), and as shown in FIG. 6, the metal locking portion 50 and the first and second engaging portions are engaged. There is a case (second embodiment) in which any one or all of the stop portions 10 and 35 and the concave groove 20 (convex portion 21) are used in combination. In the description of the second embodiment, the description of the first embodiment is used for the part common to the first embodiment.

（第１実施形態）
図１に示すコネクター兼用モルタル保持具Ａは、コネクター部１、支持枠３０、スキンキャッチャー４０、及び金属係止部５０とで構成されている。コネクター部１と支持枠３０は樹脂の射出成形物であり、スキンキャッチャー４０と金属係止部５０とは金属製（例えば、ステンレス製）である。 (First Embodiment)
The connector-combined mortar holder A shown in FIG. 1 is composed of a connector portion 1, a support frame 30, a skin catcher 40, and a metal locking portion 50. The connector portion 1 and the support frame 30 are injection molded products of resin, and the skin catcher 40 and the metal locking portion 50 are made of metal (for example, stainless steel).

図２(ａ)に示すコネクター部１は、コネクター本体部分２及びリブ７とで構成され、これらは樹脂で一体的に形成されている。
コネクター本体部分２は、円板状の部分３と、この円板状の部分３の前面側に円形台状に設けられ、モルタル６３が塗布される台状部分４、及び円板状の部分３の背面側に設けられた円筒状の部分５とで一体的に構成されている。
円板状の部分３は台状部分４より直径が大であって円板状の部分３と台状部分４の境界には段差が形成されている。
円筒状の部分５は円板状の部分３より直径がかなり小さく、円筒状の部分５と円板状の部分３の背面のコーナー部分には円板状の部分３の補強とコネクター部１の廻り止めとなる直角三角形のリブ７が一体的に設けられている。本実施例では、リブ７は円筒状の部分５の周囲に等角度で６本形成されている。
また、円板状の部分３の外周の前面側には支持枠３０を取り付けるための段部８が全周にわたって形成されている。
コネクター本体部分２のモルタル６３が塗布される面をモルタル塗布面６とし、更に後述するように型枠７１の内面に対向する面でもあるから分かりやすくするために同じ面であるが対向面６とする。 The connector portion 1 shown in FIG. 2A is composed of a connector main body portion 2 and ribs 7, which are integrally formed of resin.
The connector main body portion 2 is provided in a disk-shaped portion 3, a trapezoidal portion 4 provided in a circular trapezoidal shape on the front side of the disc-shaped portion 3, and to which the mortar 63 is applied, and a disc-shaped portion 3. It is integrally composed of a cylindrical portion 5 provided on the back surface side of the above.
The disk-shaped portion 3 has a larger diameter than the trapezoidal portion 4, and a step is formed at the boundary between the disc-shaped portion 3 and the trapezoidal portion 4.
The cylindrical portion 5 has a much smaller diameter than the disc-shaped portion 3, and the corner portion on the back surface of the cylindrical portion 5 and the disc-shaped portion 3 is reinforced by the disc-shaped portion 3 and the connector portion 1. A right-angled triangular rib 7 that serves as a detent is integrally provided. In this embodiment, six ribs 7 are formed at equal angles around the cylindrical portion 5.
Further, a step portion 8 for attaching the support frame 30 is formed on the front surface side of the outer periphery of the disk-shaped portion 3 over the entire circumference.
The surface of the connector body 2 to which the mortar 63 is applied is referred to as the mortar coating surface 6, and as will be described later, it is also the surface facing the inner surface of the mold 71, so that it is the same surface as the facing surface 6 for the sake of clarity. do.

なお、上記コネクター部１と後述する支持枠３０の平面形状は円形であるが非円形にすることも可能である。非円形断面形状としては、特に限定されるものではなく、三角形以上の多角形、花形、星形など、いずれであってもよい。 Although the planar shape of the connector portion 1 and the support frame 30 described later is circular, it can be non-circular. The non-circular cross-sectional shape is not particularly limited, and may be any of a polygon having a triangle or more, a flower shape, a star shape, and the like.

コネクター部１の中心には、コネクター本体部分２を貫通する通孔９が形成され、後述するスキンキャッチャー４０が嵌め込まれている。スキンキャッチャー４０はコネクター部１の射出成形時にインサート成形されるか、別工程で通孔９に圧入される。台状部分４の対向面（即ち、モルタル塗布面）６は、この場合、単なる平面に仕上げられている。 A through hole 9 penetrating the connector main body portion 2 is formed in the center of the connector portion 1, and a skin catcher 40 described later is fitted therein. The skin catcher 40 is insert-molded at the time of injection molding of the connector portion 1 or is press-fitted into the through hole 9 in another process. The facing surface (that is, the mortar coating surface) 6 of the trapezoidal portion 4 is finished in a simple flat surface in this case.

スキンキャッチャー４０は、（イ）図２(ａ)のように、金属製のナット本体部分４０ａと金属係止部５０とが一体的に製造される場合、（ロ）図３のように金属製のナット本体部分４０ａの一端に設けられた外鍔部４５に金属係止部５０を溶接一体化する場合、
（ハ）図４のように金属製のナット本体部分４０ａに金属係止部５０を圧入する場合がある。また、図３、図４の場合、金属係止部５０が１つの場合と図２(ｂ)に示すように直径や高さの異なる２以上の金属係止部５０ａ、５０ｂを多重に設ける場合とがある。 When the metal nut body portion 40a and the metal locking portion 50 are integrally manufactured as shown in (a) FIG. 2 (a), the skin catcher 40 is made of metal as shown in (b) FIG. When the metal locking portion 50 is welded and integrated with the outer flange portion 45 provided at one end of the nut body portion 40a of the above.
(C) As shown in FIG. 4, the metal locking portion 50 may be press-fitted into the metal nut body portion 40a. Further, in the case of FIGS. 3 and 4, there is a case where there is only one metal locking portion 50 and a case where two or more metal locking portions 50a and 50b having different diameters and heights are provided in plurality as shown in FIG. 2 (b). There is.

（イ）の場合について説明する。このスキンキャッチャー４０は、円筒状の金属製のナット本体部分４０ａとその上端に例えばフォーミング加工にて鍔状に設けられた金属係止部５０となる延出部分とで構成される。この延出部分である金属係止部５０にはモルタル６３の塗布時に未硬化のモルタル６３が通過すると共に充填されて硬化するモルタル係止孔５２が１乃至複数個穿設されている。モルタル係止孔５２の形状は丸でも四角でも扇形でもよく、未硬化のモルタル６３が通過可能で硬化したモルタル６３が係止できるならばその形状は問わない。
なお、図２(ａ)の金属係止部５０の外周環状部分をリング部分５４とし、ナット本体部分４０ａとリング部分５４とを結ぶ部分を連結アーム部分５５とする。
リング部分５４はナット本体部分４０ａより直径が大で、連結アーム部分５５はナット本体部分４０ａの端部から放射状に広がってリング部分５４に接続している。ナット本体部分４０ａの母線と連結アーム部分５５のなす角度αは鈍角（例えば、１３５°±２０°）である。 The case of (a) will be described. The skin catcher 40 is composed of a cylindrical metal nut main body portion 40a and an extending portion serving as a metal locking portion 50 provided at the upper end thereof in a collar shape, for example, by forming. The metal locking portion 50, which is an extended portion, is provided with one or a plurality of mortar locking holes 52 through which the mortar 63 is uncured when the mortar 63 is applied and is filled and cured. The shape of the mortar locking hole 52 may be round, square, or fan-shaped, and the shape is not limited as long as the uncured mortar 63 can pass through and the cured mortar 63 can be locked.
The outer peripheral annular portion of the metal locking portion 50 in FIG. 2A is referred to as a ring portion 54, and the portion connecting the nut body portion 40a and the ring portion 54 is referred to as a connecting arm portion 55.
The ring portion 54 has a larger diameter than the nut main body portion 40a, and the connecting arm portion 55 extends radially from the end portion of the nut main body portion 40a and connects to the ring portion 54. The angle α formed by the generatrix of the nut body portion 40a and the connecting arm portion 55 is an obtuse angle (for example, 135 ° ± 20 °).

（ロ）の場合について説明する。この場合は、金属製のスキンキャッチャー４０と金属係止部５０とが別体で、金属板（ステンレス製板）をプレス成形したものである。図２(ｂ)、図３はその一例で、篭状にプレス成形したものであるが、これに限られず、硬化したモルタル６３が係止できるようなモルタル係止孔５２が設けられておれば足る。図の実施例の金属係止部５０は、中心に取付孔５３ａを有する円形の取付部５３と、取付部５３より直径の大きいリング部分５４と、取付部５３から放射状に延びてリング部分５４に繋っている複数の短冊片状の連結アーム部分５５とを備えている。図３は１つの金属係止部５０を用い、図２(ｂ)は２つ（或いはそれ以上）の金属係止部５０ａ、５０ｂを用いている。図２(ｂ)の場合は、内側の金属係止部５０ａに対して外側の金属係止部５０ｂの直径が大きく（更には、高さも高く）大きさの異なるものを重ねて使用することになる。溶接は取付部５３の取付孔５３ａにスキンキャッチャー４０のナット本体部分４０ａを挿入し、ナット本体部分４０ａの外鍔部４５に行われる。これにより、金属係止部５０とスキンキャッチャー４０のナット本体部分４０ａとが一体化される。 The case of (b) will be described. In this case, the metal skin catcher 40 and the metal locking portion 50 are separate bodies, and a metal plate (stainless steel plate) is press-molded. 2 (b) and 3 are, for example, press-molded in the shape of a basket, but the present invention is not limited to this, and if a mortar locking hole 52 is provided so that the hardened mortar 63 can be locked. Sufficient. The metal locking portion 50 of the embodiment of the figure has a circular mounting portion 53 having a mounting hole 53a in the center, a ring portion 54 having a diameter larger than that of the mounting portion 53, and a ring portion 54 extending radially from the mounting portion 53. It is provided with a plurality of strip-shaped connecting arm portions 55 that are connected. FIG. 3 uses one metal locking portion 50, and FIG. 2B uses two (or more) metal locking portions 50a and 50b. In the case of FIG. 2B, the outer metal locking portion 50b having a larger diameter (and higher height) and different sizes are used in an overlapping manner with respect to the inner metal locking portion 50a. Become. Welding is performed by inserting the nut body portion 40a of the skin catcher 40 into the mounting hole 53a of the mounting portion 53 and performing welding on the outer flange portion 45 of the nut body portion 40a. As a result, the metal locking portion 50 and the nut body portion 40a of the skin catcher 40 are integrated.

（ハ）の場合について説明する。この場合は、（ロ）と同様で、１つの金属係止部５０、又は２つ（或いはそれ以上）の金属係止部５０ａ、５０ｂを用い、取付部５３の取付孔５３ａにスキンキャッチャー４０のナット本体部分４０ａを圧入して一体化する。
図４のように、圧入リング５６を更にナット本体部分４０ａに圧入し、圧入リング５６と外鍔部４５で取付部５３を押圧挟持するようにしてもよい。 The case of (c) will be described. In this case, as in (b), one metal locking portion 50 or two (or more) metal locking portions 50a and 50b are used, and the skin catcher 40 is used in the mounting hole 53a of the mounting portion 53. The nut body portion 40a is press-fitted and integrated.
As shown in FIG. 4, the press-fit ring 56 may be further press-fitted into the nut body portion 40a, and the mounting portion 53 may be pressed and sandwiched between the press-fit ring 56 and the outer flange portion 45.

スキンキャッチャー４０のナット本体部分４０ａには躯体コンクリート６０側の端面にセパボルト７０に螺合させるためのネジ孔４３が設けられ、モルタル６３側の端面に型枠締付用ボルト７２を螺合させるためのネジ孔４２が設けられている。これら二つのネジ孔４３・４２は、仕切壁４１を挟んで同軸に設けられている。
仕切壁４１は必ずしも必要とするものではなく、両ネジ孔４３、４２が互いに連通していてもよい。仕切壁４１を設けておくと、セパボルト７０と型枠締付用ボルト７２のいずれか一方が他方のネジ孔まで侵入することにより他方のボルトのネジ孔長を不足させたり、またセパボルトに対するコネクター部１の固定位置を設定し難くする問題を解消することができる。 The nut body portion 40a of the skin catcher 40 is provided with a screw hole 43 for screwing to the separator bolt 70 on the end face on the skeleton concrete 60 side, and for screwing the formwork tightening bolt 72 on the end face on the mortar 63 side. The screw hole 42 is provided. These two screw holes 43 and 42 are coaxially provided with the partition wall 41 interposed therebetween.
The partition wall 41 is not always necessary, and both screw holes 43 and 42 may communicate with each other. If the partition wall 41 is provided, either one of the separator bolt 70 and the formwork tightening bolt 72 penetrates into the screw hole of the other, so that the screw hole length of the other bolt is insufficient, and the connector portion for the separator bolt is also provided. It is possible to solve the problem that it is difficult to set the fixed position of 1.

支持枠３０は環状の部材で、必要に応じて内周面の全周にわたって内鍔部３１が一体的に突設されている。図１は内鍔部３１を設けない例であり、図２は内鍔部３１を設けた例である。
内鍔部３１を設けた例では、後述するように、内鍔部３１に第１係止部１０と同方向(型枠７１方向)に多数の第２係止部３５が一定間隔で設ける場合と、第２係止部３５を設けない場合とがあり、図２では第２係止部３５を設けない場合とする。 The support frame 30 is an annular member, and the inner flange portion 31 is integrally projected over the entire circumference of the inner peripheral surface as needed. FIG. 1 is an example in which the inner flange portion 31 is not provided, and FIG. 2 is an example in which the inner flange portion 31 is provided.
In the example in which the inner flange portion 31 is provided, as will be described later, when a large number of second locking portions 35 are provided on the inner flange portion 31 in the same direction as the first locking portion 10 (direction of the formwork 71) at regular intervals. In some cases, the second locking portion 35 is not provided, and in FIG. 2, the second locking portion 35 is not provided.

支持枠３０の前端面には断面三角形状の環状当接部３４が支持枠３０の全周にわたって形成されている。環状当接部３４の型枠７１への当接面積は支持枠３０の前端面の面積より小さい。
支持枠３０の後端内周部分は段状に形成されており、この部分をコネクター部１に対する嵌め込み段部３２とする。また、内鍔部３１の内側に形成された大孔を内鍔孔部３３とする。 An annular contact portion 34 having a triangular cross section is formed on the front end surface of the support frame 30 over the entire circumference of the support frame 30. The contact area of the annular contact portion 34 with the formwork 71 is smaller than the area of the front end surface of the support frame 30.
The inner peripheral portion of the rear end of the support frame 30 is formed in a stepped shape, and this portion is used as a fitting step portion 32 with respect to the connector portion 1. Further, the large hole formed inside the inner flange portion 31 is referred to as the inner flange portion 33.

上記モルタル保持具Ａの製造方法であるが、コネクター部１と支持枠３０とが既述のように別体で射出成形法により樹脂で成形され、コネクター部１の円板状の部分３の外周の段部８に支持枠３０の嵌め込み段部３２が圧入或いは嵌め込まれて接着により一体化される。
内鍔部３１が設けられている場合では、コネクター部１に支持枠３０を嵌め込んだ状態で、支持枠３０の内鍔部３１はコネクター部１の台状部分４の対向面６より前方側（モルタル側）に位置する。 Regarding the method for manufacturing the mortar holder A, the connector portion 1 and the support frame 30 are separately molded from resin by an injection molding method as described above, and the outer periphery of the disk-shaped portion 3 of the connector portion 1 is formed. The fitting step portion 32 of the support frame 30 is press-fitted or fitted into the step portion 8 of the above, and is integrated by adhesion.
When the inner flange portion 31 is provided, the inner flange portion 31 of the support frame 30 is on the front side of the facing surface 6 of the trapezoidal portion 4 of the connector portion 1 with the support frame 30 fitted in the connector portion 1. Located on the (mortar side).

モルタル保持具Ａにおいて、金属係止部５０（５０ａ・５０ｂ）は、モルタル６３に対するアンカー効果を発生する手段である。支持枠３０は、モルタル保持具Ａをコネクターとして使用するとき、型枠７１の締付圧を受け止める支持面として作用し、金属係止部５０が型枠７１の締付圧により押し潰されないように保護する。 In the mortar holder A, the metal locking portions 50 (50a and 50b) are means for generating an anchor effect on the mortar 63. When the mortar holder A is used as a connector, the support frame 30 acts as a support surface for receiving the tightening pressure of the form 71 so that the metal locking portion 50 is not crushed by the tightening pressure of the form 71. Protect.

図５(ａ)～(ｃ)は、上述した第１実施形態のモルタル保持具Ａを型枠７１のコネクターとして使用し、然る後、躯体コンクリート６０の表面６１にモルタル６３を塗布する際のモルタル保持具として使用される場合の工程を示したものであり、図５(ｄ)は、建物が火災に遭遇し、樹脂部分であるコネクター部１と支持枠３０とが焼失した状態を示す。 5 (a) to 5 (c) show the case where the mortar holder A of the first embodiment described above is used as the connector of the formwork 71, and then the mortar 63 is applied to the surface 61 of the skeleton concrete 60. The process when it is used as a mortar holder is shown, and FIG. 5D shows a state in which a building encounters a fire and the connector portion 1 and the support frame 30 which are resin portions are burnt down.

まず、図５(ａ)では、モルタル保持具Ａが、型枠７１の組み立てにおいて、セパボルト７０と型枠締付用ボルト７２のコネクターとして使用されている状態を示す。一般にセパボルト７０の本数としては、コンクリートの単位表面積当たり４本／ｍ2の割合が配置されている。 First, FIG. 5A shows a state in which the mortar holder A is used as a connector between the separator bolt 70 and the form tightening bolt 72 in the assembly of the form 71. Generally, as the number of sepabolts 70, a ratio of 4 bolts / m 2 is arranged per unit surface area of concrete.

セパボルト７０毎に、コネクター兼用モルタル保持具Ａのネジ孔４３をセパボルト７０の端部の雄ねじ部分に螺合させ、反対側のネジ孔４２に型枠締付用ボルト７２を螺合させて両ボルト７０，７２を連結状態にする。次いで、型枠締付用ボルト７２に型枠７１の通孔を通し、その型枠７１の外側に一対の横端太材７３および固定部材７４を重ね、最後に型枠締付用ボルト７２の端部に締付けナット７５を螺合させて締め付ける。 For each sepa bolt 70, screw the screw hole 43 of the mortar holder A that also serves as a connector into the male screw portion at the end of the sepa bolt 70, and screw the formwork tightening bolt 72 into the screw hole 42 on the opposite side to both bolts. The 70 and 72 are connected. Next, the through hole of the formwork 71 is passed through the formwork tightening bolt 72, a pair of horizontal end thick members 73 and the fixing member 74 are overlapped on the outside of the formwork 71, and finally the formwork tightening bolt 72 is used. Tighten the tightening nut 75 by screwing it into the end.

上記のように型枠７１を締付けナット７５で締め付け固定すると、型枠７１から各コネクター兼用モルタル保持具Ａの支持枠３０に作用する締付圧は２００ｋｇ／ｃｍ2以上にもなる。しかし、コネクター部１の外周には円板状の部分３の段部８に嵌め込まれてバックアップされた支持枠３０が存在するので、この支持枠３０が型枠７１の締付圧を支えて金属係止部５０を保護するため、これが押し潰されることはない。
なお、型枠７１の内面に直接接触するのは、支持枠３０の前端面に設けられた幅の狭い環状当接部３４であり、これが型枠７１の締付圧により変形して型枠７１の当接部分に対する傷付きを緩和している。 When the formwork 71 is tightened and fixed with the tightening nut 75 as described above, the tightening pressure acting on the support frame 30 of the mortar holder A for each connector from the formwork 71 becomes 200 kg / cm 2 or more. However, since the support frame 30 that is fitted and backed up by the step portion 8 of the disk-shaped portion 3 exists on the outer periphery of the connector portion 1, the support frame 30 supports the tightening pressure of the mold 71 and is made of metal. To protect the locking portion 50, it will not be crushed.
It should be noted that what comes into direct contact with the inner surface of the formwork 71 is a narrow annular contact portion 34 provided on the front end surface of the support frame 30, which is deformed by the tightening pressure of the formwork 71 and is deformed by the formwork 71. The damage to the contact part of the is alleviated.

このようにして型枠７１の組み付けが終了すると、前後の型枠７１内の打設用空間にコンクリートを打設する。コンクリートが打設用空間に満杯状態に充填されると、未硬化のコンクリートはセパボルト７０と共にコネクター兼用モルタル保持具Ａを埋設した状態となる。この時、支持枠３０は上記のように型枠７１の内面に接してその内側を閉空間Ｈとしているので、打設されたコンクリートは支持枠３０の外側を埋めるが、閉空間Ｈになっている環状の支持枠３０の内側まで流入しない。 When the assembly of the formwork 71 is completed in this way, concrete is placed in the casting space in the front and rear formwork 71. When the concrete is filled in the casting space in a full state, the uncured concrete is in a state where the connector-combined mortar holder A is embedded together with the sepabolt 70. At this time, since the support frame 30 is in contact with the inner surface of the formwork 71 and the inside thereof is a closed space H as described above, the cast concrete fills the outside of the support frame 30 but becomes a closed space H. It does not flow into the inside of the annular support frame 30.

打設されたコンクリートが硬化し、躯体コンクリート６０が形成されると、次に脱型作業に移る。脱型作業は締付けナット７５、固定部材７４、横端太材７３、型枠７１を順次撤去し、最後に型枠締付用ボルト７２を回動させて離脱することで行われる。この脱型作業において型枠締付用ボルト７２を回動させて離脱させるとき、コネクター部１の躯体コンクリート６０内に埋設されたリブ７により、モルタル保持具Ａの供回りが阻止され、円滑に離脱させることができる。 When the cast concrete is hardened and the skeleton concrete 60 is formed, the next step is to remove the mold. The demolding work is performed by sequentially removing the tightening nut 75, the fixing member 74, the horizontal end thick material 73, and the formwork 71, and finally rotating the formwork tightening bolt 72 to disengage. When the formwork tightening bolt 72 is rotated and detached in this demolding work, the rib 7 embedded in the skeleton concrete 60 of the connector portion 1 prevents the mortar holder A from rotating and smoothly. It can be separated.

この脱型作業において、本発明のモルタル保持具Ａのスキンキャッチャー４０は、セパボルト７０に連結されており、更に支持枠３０の外周部分の外鍔により、躯体コンクリート６０の表面６１から抜け落ちることがなく、図５(ｂ)に示すように、セパボルト７０に連結された状態で躯体コンクリート６０内に残置される。 In this demolding work, the skin catcher 40 of the mortar holder A of the present invention is connected to the sepabolt 70, and further, the outer flange of the outer peripheral portion of the support frame 30 does not come off from the surface 61 of the skeleton concrete 60. , As shown in FIG. 5B, it is left in the skeleton concrete 60 in a state of being connected to the sepabolt 70.

脱型すると、躯体コンクリート６０の表面６１にモルタル保持具Ａの金属係止部５０を含むモルタル塗布面６が外部に露出する（図５(ｂ)）。然る後、躯体コンクリート６０の表面６１にモルタル６３を塗布する。モルタル保持具Ａの埋設部分では、塗布されたモルタル６３の一部は支持枠３０の内側に入り込み、金属係止部５０のモルタル係止孔５２を通過し、金属係止部５０全体をモルタル６３内に取り込んで硬化する（図５(ｃ)）。これにより、高いアンカー効果を発揮する。 When the mold is removed, the mortar coating surface 6 including the metal locking portion 50 of the mortar holder A is exposed to the outside on the surface 61 of the skeleton concrete 60 (FIG. 5 (b)). After that, the mortar 63 is applied to the surface 61 of the skeleton concrete 60. In the buried portion of the mortar holder A, a part of the applied mortar 63 enters the inside of the support frame 30, passes through the mortar locking hole 52 of the metal locking portion 50, and covers the entire metal locking portion 50 as the mortar 63. It is taken into the inside and cured (Fig. 5 (c)). As a result, a high anchor effect is exhibited.

（図５(ｄ)）は、建物が火災に遭遇し、モルタル保持具Ａの樹脂部分であるコネクター部１と支持枠３０とが高熱のために炭化或いは焼失した状態を示す。この状態において、スキンキャッチャー４０は躯体コンクリート６０内に埋設されているセパボルト７０に螺着された状態を保つ。
金属係止部５０は、スキンキャッチャー４０のナット本体部分４０ａの端部に設けられた外鍔部４５にその取付孔５３ａが係止され、スキンキャッチャー４０から脱落しない。そして、モルタル保持具Ａの周囲において、モルタル６３に亀裂Ｋや剥離が発生し、当該部分において躯体コンクリート６０からモルタル６３が浮いたとしても、そして上記のように樹脂部分の炭化や焼失した状態であったとしても、スキンキャッチャー４０の外鍔部４５に係止されてスキンキャッチャー４０から脱落しない金属係止部５０がモルタル６３の剥離部分Ｋを保持することになる。 (FIG. 5D) shows a state in which a building encounters a fire and the connector portion 1 and the support frame 30, which are resin portions of the mortar holder A, are carbonized or burnt down due to high heat. In this state, the skin catcher 40 is kept screwed to the sepabolt 70 embedded in the skeleton concrete 60.
The metal locking portion 50 has its mounting hole 53a locked in the outer flange portion 45 provided at the end of the nut body portion 40a of the skin catcher 40, and does not fall off from the skin catcher 40. Then, even if cracks K or peeling occur in the mortar 63 around the mortar holder A and the mortar 63 floats from the skeleton concrete 60 in the portion, and the resin portion is carbonized or burnt down as described above. Even if there is, the metal locking portion 50 that is locked to the outer flange portion 45 of the skin catcher 40 and does not fall off from the skin catcher 40 holds the peeled portion K of the mortar 63.

図２(ａ)は、スキンキャッチャー４０のナット本体部分４０ａと金属係止部５０が一体物であるから、上記のように樹脂部分が炭化したりや焼失して空洞Ｖになって金属係止部５０を固定することができなくなったとしても、金属係止部５０はナット本体部分４０ａに対してぐらぐらすることはない。
図３のように外鍔部４５に金属係止部５０の取付部５３が溶接により一体化されている場合、或いは、図４のように、スキンキャッチャー４０のナット本体部分４０ａが金属係止部５０の取付部５３の取付孔５３ａに圧入され、更にはスキンキャッチャー４０のナット本体部分４０ａに圧入リング５６が圧入され、外鍔部４５と圧入リング５６とで金属係止部５０の取付部５３を押圧挟持するようにしておけば、上記一体化と同様の効果を持つ。
なお、金属係止部５０は、１個でもよいが、図２(ｂ)に示すように、直径の異なる複数の金属係止部５０ａ・５０ｂを重ねるようにしてもよい。これにより、モルタル保持具が向上する。 In FIG. 2A, since the nut body portion 40a of the skin catcher 40 and the metal locking portion 50 are integrated, the resin portion is carbonized or burnt down to form a cavity V as described above, and the metal locking portion is formed. Even if the 50 cannot be fixed, the metal locking portion 50 does not wobble with respect to the nut body portion 40a.
When the mounting portion 53 of the metal locking portion 50 is integrated with the outer flange portion 45 by welding as shown in FIG. 3, or as shown in FIG. 4, the nut body portion 40a of the skin catcher 40 is a metal locking portion. The press-fit ring 56 is press-fitted into the mounting hole 53a of the mounting portion 53 of the 50, and further, the press-fit ring 56 is press-fitted into the nut body portion 40a of the skin catcher 40. If it is pressed and sandwiched, it has the same effect as the above integration.
The number of metal locking portions 50 may be one, but as shown in FIG. 2B, a plurality of metal locking portions 50a and 50b having different diameters may be stacked. This improves the mortar holder.

（第２実施形態）
以下、本発明の第２実施形態を説明する。図６に示すコネクター兼用モルタル保持具Ａは、第１実施形態と同様、コネクター部１と支持枠３０、スキンキャッチャー４０、金属係止部５０とで構成されている。第２実施形態と第１実施形態との相違点は、コネクター部１と支持枠３０にある。以下、相違点を中心に説明する。
第２実施形態の基本形は、図６、図７に示す金属係止部５０と第１，２係止部１０、３５及び凹溝２０（凸部２１）を併用する場合であるが、第１，２係止部１０、３５及び凹溝２０の内の１又は複数を選択することができる。凸部２１は後述するように凹溝２０の内周面に設けられるものであるから，凸部２１だけを選択することができず、凹溝２０に付随して選択される。 (Second Embodiment)
Hereinafter, a second embodiment of the present invention will be described. The connector-combined mortar holder A shown in FIG. 6 is composed of a connector portion 1, a support frame 30, a skin catcher 40, and a metal locking portion 50, as in the first embodiment. The difference between the second embodiment and the first embodiment lies in the connector portion 1 and the support frame 30. Hereinafter, the differences will be mainly described.
The basic form of the second embodiment is a case where the metal locking portions 50 shown in FIGS. 6 and 7 are used in combination with the first and second locking portions 10, 35 and the concave groove 20 (convex portion 21). , 2 One or more of the locking portions 10, 35 and the concave groove 20 can be selected. Since the convex portion 21 is provided on the inner peripheral surface of the concave groove 20 as described later, it is not possible to select only the convex portion 21, and the convex portion 21 is selected along with the concave groove 20.

このコネクター部１は、図６、図７に示すようにコネクター本体部分２の台状部分４の対向面（即ち、モルタル塗布面）６に第１係止部１０が設けられている場合である。第１係止部１０（後述する第２係止部３５も同様）としては、未硬化のモルタル６３内に深く侵入できる剛性（換言すれば、未硬化のモルタルの流れ込みに屈しない剛性）と、硬化後のモルタル６３を支持するだけの破断強度と、且つ硬化後のモルタル６３から抜け出ない形状を有するものであれば特に限定されない。 As shown in FIGS. 6 and 7, the connector portion 1 is a case where the first locking portion 10 is provided on the facing surface (that is, the mortar coating surface) 6 of the trapezoidal portion 4 of the connector main body portion 2. .. The first locking portion 10 (the same applies to the second locking portion 35 described later) has a rigidity that allows deep penetration into the uncured mortar 63 (in other words, a rigidity that does not yield to the inflow of the uncured mortar). It is not particularly limited as long as it has a breaking strength sufficient to support the cured mortar 63 and a shape that does not come out of the cured mortar 63.

図６の実施形態の第１係止部１０はループ形状であるが、例えば、キノコ形フック（脚部の直径より大きい直径の円錐台状の頭部が脚部の先端に設けられているフック）、又は図１８に示すような球状フック（脚部３６の直径より大きい直径の頭部３７が脚部３６の先端に設けられているフック）でもよい。ここではループ形状とする。ループの正面形状はモルタル塗布面６から外側に伸びた半円状または半楕円形である。 The first locking portion 10 of the embodiment of FIG. 6 has a loop shape, and is, for example, a mushroom-shaped hook (a hook having a truncated cone-shaped head having a diameter larger than the diameter of the leg portion provided at the tip of the leg portion). ), Or a spherical hook as shown in FIG. 18 (a hook having a head 37 having a diameter larger than the diameter of the leg 36 provided at the tip of the leg 36). Here, the loop shape is used. The front shape of the loop is a semicircular or semi-elliptical shape extending outward from the mortar coating surface 6.

ループ形状の第１係止部１０の横断面形状は、図１４(ａ)～(ｃ)のような内周面側が平面となった四角形や三角形、或いは半円形などが考えられる。第１係止部１０の内周面側が平面となっておれば、引っ張り力が加わった場合、内周面全面に力が分散して第１係止部１０が切れにくい。また、図示していないが第１係止部１０の太さ全体を同じ太さで形成してもよいし、脚部１１の太さを基部に近づくほど漸増するようにしてもよい。後者の場合、引っ張り力が加わった場合、脚部１１が基部から切れにくくなる。 The cross-sectional shape of the first locking portion 10 having a loop shape may be a quadrangle, a triangle, or a semicircle whose inner peripheral surface side is a flat surface as shown in FIGS. 14A to 14C. If the inner peripheral surface side of the first locking portion 10 is flat, when a tensile force is applied, the force is dispersed over the entire inner peripheral surface and the first locking portion 10 is difficult to break. Further, although not shown, the entire thickness of the first locking portion 10 may be formed to have the same thickness, or the thickness of the leg portion 11 may be gradually increased as it approaches the base. In the latter case, when a pulling force is applied, the leg portion 11 is less likely to be cut off from the base portion.

ループ形状の第１係止部１０は、第１実施形態の図２に示すコネクター本体部分２のモルタル塗布面６のように平坦な面に形成してもよいが、図７、図１１、図１３に示すような凹溝２０が形成されているモルタル塗布面６に設けてもよい。
台状部分４の対向面（即ち、モルタル塗布面）６に設けられた凹溝２０は、台状部分４の一方の側面から他方の側面に貫通し、且つ等間隔で複数条刻設されている。中央部分の複数の凹溝２０は通孔９に交差して円形に切り取られている。凹溝２０の横断面形状は、本実施例ではコネクター部１の中心軸に平行な方向に伸びた半円状又は半楕円状に形成されている。そして、凹溝２０の間の部分を畝状部４ａとする。なお、凹溝２０の横断面形状は上記に限られず、図示していないが、矩形その他の形状とすることが出来る。 The loop-shaped first locking portion 10 may be formed on a flat surface such as the mortar coating surface 6 of the connector main body portion 2 shown in FIG. 2 of the first embodiment, but FIGS. 7, 11, and FIGS. It may be provided on the mortar coating surface 6 in which the concave groove 20 as shown in 13 is formed.
The concave groove 20 provided on the facing surface (that is, the mortar coating surface) 6 of the trapezoidal portion 4 penetrates from one side surface of the trapezoidal portion 4 to the other side surface, and is engraved in a plurality of rows at equal intervals. There is. The plurality of concave grooves 20 in the central portion intersect the through holes 9 and are cut out in a circular shape. In this embodiment, the cross-sectional shape of the concave groove 20 is formed in a semicircular or semi-elliptical shape extending in a direction parallel to the central axis of the connector portion 1. Then, the portion between the concave grooves 20 is referred to as a ridge-shaped portion 4a. The cross-sectional shape of the concave groove 20 is not limited to the above, and although not shown, it may be a rectangle or other shape.

ループ形状の第１係止部１０は、図に示する実施例では凹溝２０を跨ぐように形成される。これにより、第１係止部１０と凹溝２０とで略円形又は楕円形空間が形成され、この空間内にモルタル６３が入り込む。第１係止部１０を半楕円形することで、第１係止部１０に加わった引っ張り力が脚部１１に垂直に加わるようになりループが切れにくくなる。 The loop-shaped first locking portion 10 is formed so as to straddle the concave groove 20 in the embodiment shown in the figure. As a result, a substantially circular or elliptical space is formed by the first locking portion 10 and the concave groove 20, and the mortar 63 enters the space. By making the first locking portion 10 semi-elliptical, the pulling force applied to the first locking portion 10 is applied vertically to the leg portion 11, and the loop is less likely to break.

第１係止部１０の配列は、図１２(ａ)のように千鳥状、又は同図(ｂ)のように一列に配列して突設されている。
千鳥状の配列とは、隣接する第１係止部１０が、隣り合う２つの凹溝２０を交互に跨ぐように配列される状態であり、列状の配列とは、隣接する第１係止部１０が、同じ凹溝２０を跨ぐように配列される状態である。
ループ状の第１係止部１０を千鳥状に並べると、隣接する第１係止部１０の前後する脚部１１が同じ畝状部４ａに連なるように設けることができるので、同一面積内では列状に配列する場合に比べてより多くの第１係止部１０を設けることができる。
ループ状の第１係止部１０と凹溝２０で構成された係止空間はこの部分にモルタル６３が塗り込まれて硬化した時、この部分のモルタル６３を抱持することになるので、係止するためのアンカー効果を強くする。 The arrangement of the first locking portions 10 is staggered as shown in FIG. 12 (a) or arranged in a row as shown in FIG. 12 (b).
The staggered arrangement is a state in which the adjacent first locking portions 10 are arranged so as to alternately straddle two adjacent concave grooves 20, and the row-shaped arrangement is a state in which the adjacent first locking portions 10 are arranged so as to alternately straddle the two adjacent concave grooves 20. The portions 10 are arranged so as to straddle the same concave groove 20.
When the loop-shaped first locking portions 10 are arranged in a staggered pattern, the front and rear leg portions 11 of the adjacent first locking portions 10 can be provided so as to be connected to the same ridge-shaped portion 4a. More first locking portions 10 can be provided as compared with the case of arranging them in a row.
When the mortar 63 is applied to this portion and hardened, the locking space composed of the loop-shaped first locking portion 10 and the concave groove 20 will hold the mortar 63 in this portion. Strengthen the anchor effect to stop.

凹溝２０の内周面に凸部２１を更に形成してもよい。図１３の凸部２１は、台状部分４のモルタル塗布面６に開く凹溝２０の開口に沿って一体的に突設されている。図の実施例では、凹溝２０の開口の両側に凸部２１が設けられているが、一方だけでもよい。
また、図示していないが、凸部２１の形成位置はモルタル塗布面６の開口縁に沿う内周面でなく、開口縁から奥に入った凹溝２０の内側でも良い。また、図の実施例では、凸部２１は凹溝２０の全長に亙って形成されるようになっているが、成形可能な限り、凹溝２０の一部としてもよい。
凸部２１の横断面形状は、図１４(ａ)に示すように、四角形や、同図(ｂ)に示すように、凹溝２０の入隅２２を鋭角に切り込んでもよいし、同図(ｃ)に示すように、凹溝２０と第１係止部１０とに跨る境界部分に凸部２１を設けてもよい。この場合は、第１係止部１０の脚部１１が太くなるので、この部分の強度を高めることができる。第２実施形態の保持具Ａは、上記凹溝２０に凸部２１を設けただけのものでも良いが、上記の第１係止部１０を更に設けることも出来る。ここでは第１係止部１０を設けた事例で説明する。 The convex portion 21 may be further formed on the inner peripheral surface of the concave groove 20. The convex portion 21 of FIG. 13 is integrally projected along the opening of the concave groove 20 opened in the mortar coating surface 6 of the trapezoidal portion 4. In the embodiment shown in the figure, the convex portions 21 are provided on both sides of the opening of the concave groove 20, but only one of them may be provided.
Further, although not shown, the position where the convex portion 21 is formed may not be the inner peripheral surface along the opening edge of the mortar coating surface 6, but may be the inside of the concave groove 20 which is deep from the opening edge. Further, in the embodiment of the figure, the convex portion 21 is formed over the entire length of the concave groove 20, but may be a part of the concave groove 20 as long as it can be molded.
The cross-sectional shape of the convex portion 21 may be a quadrangle as shown in FIG. 14 (a), or the inside corner 22 of the concave groove 20 may be cut at an acute angle as shown in FIG. 14 (b). As shown in c), the convex portion 21 may be provided at the boundary portion straddling the concave groove 20 and the first locking portion 10. In this case, since the leg portion 11 of the first locking portion 10 becomes thicker, the strength of this portion can be increased. The holder A of the second embodiment may be provided only with the convex portion 21 in the concave groove 20, but may be further provided with the first locking portion 10. Here, an example in which the first locking portion 10 is provided will be described.

第１係止部１０と金属係止部５０との関係は、図６、図９に示すように、金属係止部５０の収納領域を空けるように通孔９の周囲に第１係止部１０が設けられない部分がモルタル塗布面６に設けられ、この部分に金属係止部５０が設置される。そして、当該部分に設置された金属係止部５０の周囲を取り囲むように第１係止部１０が設けられる状態となる。図の実施例では金属係止部５０は１個であるが、スペースが許せば複数個の金属係止部５０ａ・５０ｂを設置することができる。 As for the relationship between the first locking portion 10 and the metal locking portion 50, as shown in FIGS. 6 and 9, the first locking portion is formed around the through hole 9 so as to open a storage area for the metal locking portion 50. A portion where 10 is not provided is provided on the mortar coating surface 6, and a metal locking portion 50 is installed in this portion. Then, the first locking portion 10 is provided so as to surround the periphery of the metal locking portion 50 installed in the portion. In the embodiment shown in the figure, the number of metal locking portions 50 is one, but if space allows, a plurality of metal locking portions 50a and 50b can be installed.

第２実施形態の支持枠３０は、第１実施形態と同様、内鍔部３１を設けない例と、内鍔部３１を設けた例がある。内鍔部３１を設けた例では、内鍔部３１に第１係止部１０と同方向に多数の第２係止部３５が一定間隔で設ける場合と、第２係止部３５を設けない場合とがある。図６、図７では第２係止部３５を設けた場合でこれを代表例とする。
内鍔部３１には第１係止部１０と同方向に多数の第２係止部３５が一定間隔で設けられている。第２係止部３５も上記のように未硬化のモルタル６３内に深く侵入できる剛性を有し、かつ硬化後のモルタル６３を支持するだけの破断強度を有し、且つ硬化後のモルタル６３から脱落しない形状を有するものであれば特に限定されない。ここでは、脚部３６より直径が大で球状の頭部３７を有する球状フックが用いられている。球状フック型の第２係止部３５の脚部３６は、図１８から分かるように、支持枠３０の中心方向に向けて湾曲している。これにより、モルタル６３の塗布時の圧力によって中心方向に変形することになるので、保持具Ａの中心方向（換言すれば、第１係止部１０）に向かってモルタル６３が充填されやすくなる。 Similar to the first embodiment, the support frame 30 of the second embodiment has an example in which the inner flange portion 31 is not provided and an example in which the inner flange portion 31 is provided. In the example in which the inner flange portion 31 is provided, a large number of second locking portions 35 are provided in the same direction as the first locking portion 10 at regular intervals in the inner flange portion 31, and the second locking portion 35 is not provided. There are cases. In FIGS. 6 and 7, a case where the second locking portion 35 is provided is taken as a typical example.
The inner flange portion 31 is provided with a large number of second locking portions 35 at regular intervals in the same direction as the first locking portion 10. As described above, the second locking portion 35 also has a rigidity that allows it to penetrate deeply into the uncured mortar 63, has a breaking strength sufficient to support the cured mortar 63, and is from the cured mortar 63. It is not particularly limited as long as it has a shape that does not fall off. Here, a spherical hook having a spherical head 37 having a diameter larger than that of the leg portion 36 is used. As can be seen from FIG. 18, the leg portion 36 of the spherical hook type second locking portion 35 is curved toward the center of the support frame 30. As a result, the mortar 63 is deformed in the central direction due to the pressure at the time of application, so that the mortar 63 is easily filled toward the center direction of the holder A (in other words, the first locking portion 10).

第２実施形態のモルタル保持具Ａの製造方法も第１形態と同様である。即ち、コネクター部１に支持枠３０を嵌め込んだ状態では、支持枠３０の内鍔部３１はコネクター部１の台状部分４より前方側（モルタル側）に位置し、第１係止部１０の全体が内鍔孔部３３にて内側に囲まれた状態となり、第１係止部１０の全体をその周囲から第２係止部３５が囲むようになる。この時、第２係止部３５は第１係止部１０より高く、第２係止部３５の頭部３７が最外周の第１係止部１０の上端より上に位置し、これに被さるようになる。従って、第１係止部１０は支持枠３０の前端の環状当接部３４より低い位置にある。 The method for manufacturing the mortar holder A of the second embodiment is the same as that of the first embodiment. That is, in a state where the support frame 30 is fitted into the connector portion 1, the inner flange portion 31 of the support frame 30 is located on the front side (mortar side) of the trapezoidal portion 4 of the connector portion 1, and the first locking portion 10 The entire surface of the first locking portion 10 is surrounded inside by the inner flange hole portion 33, and the entire first locking portion 10 is surrounded by the second locking portion 35 from the periphery thereof. At this time, the second locking portion 35 is higher than the first locking portion 10, and the head 37 of the second locking portion 35 is located above the upper end of the first locking portion 10 on the outermost circumference and covers the first locking portion 10. It will be like. Therefore, the first locking portion 10 is located at a position lower than the annular contact portion 34 at the front end of the support frame 30.

図１９(ａ)～(ｃ)は、上述した第２実施形態のモルタル保持具Ａを型枠７１のコネクターとして使用し、然る後、躯体コンクリート６０の表面６１にモルタル６３を塗布する際のモルタル保持具として使用される場合の工程を示したもので、手順は第１実施形態と同じである。
第２実施形態では、金属係止部５０の他に第１係止部１０、第２係止部３５、（凸部２１を有する凹溝２０）を設けてある。第２実施形態のモルタル保持具Ａには金属係止部５０、第１係止部１０、第２係止部３５と同等以上の高さを持ち、円板状の部分３の段部８に嵌め込まれてバックアップされた支持枠３０が存在するので、この支持枠３０が型枠７１の締付圧を支えて第１係止部１０、第２係止部３５、金属係止部５０を保護するため、第１係止部１０、第２係止部３５、金属係止部５０が押し潰されることはない。 19 (a) to 19 (c) show when the mortar holder A of the second embodiment described above is used as a connector of the formwork 71, and then the mortar 63 is applied to the surface 61 of the skeleton concrete 60. The process when it is used as a mortar holder is shown, and the procedure is the same as the 1st Embodiment.
In the second embodiment, in addition to the metal locking portion 50, a first locking portion 10, a second locking portion 35, and (a concave groove 20 having a convex portion 21) are provided. The mortar holder A of the second embodiment has a height equal to or higher than that of the metal locking portion 50, the first locking portion 10, and the second locking portion 35, and is formed on the step portion 8 of the disk-shaped portion 3. Since there is a support frame 30 that is fitted and backed up, the support frame 30 supports the tightening pressure of the mold 71 and protects the first locking portion 10, the second locking portion 35, and the metal locking portion 50. Therefore, the first locking portion 10, the second locking portion 35, and the metal locking portion 50 are not crushed.

型枠７１の組み付けが終了すると、前後の型枠７１内の打設用空間にコンクリートを打設する。打設されたコンクリートは支持枠３０の外側を埋めるが、閉空間Ｈになっている環状の支持枠３０の内側まで流入しない。そして、打設コンクリートが硬化し、躯体コンクリート６０が形成されると、次に脱型作業に移り、第２実施形態のモルタル保持具Ａは、セパボルト７０と連結された状態で躯体コンクリート６０内に残置される。 When the assembly of the formwork 71 is completed, concrete is placed in the casting space in the front and rear formwork 71. The cast concrete fills the outside of the support frame 30, but does not flow into the inside of the annular support frame 30 which is a closed space H. Then, when the cast concrete is hardened and the skeleton concrete 60 is formed, the next step is to perform the demolding work, and the mortar holder A of the second embodiment is placed in the skeleton concrete 60 in a state of being connected to the sepabolt 70. Be left behind.

脱型すると、躯体コンクリート６０の表面６１にモルタル保持具Ａの第１係止部１０及び第２係止部３５、金属係止部５０、（凸部２１を有する凹溝２０）を含むモルタル塗布面６が外部に露出する（図１９(ｂ)）。
然る後、躯体コンクリート６０の表面６１にモルタル６３を塗布する。モルタル保持具Ａの埋設部分では、塗布されたモルタル６３の一部は、凹溝２０が設けられている場合には、支持枠３０の内側の凹溝２０の全長に入り込み、且つ第１係止部１０及び第２係止部３５、金属係止部５０をモルタル６３内に取り込んで硬化する（図１９(ｃ)）。
凸部２１を設けている場合には、凹溝２０内において、凸部２１の入隅２２内にモルタル６３が更に入り込む。 After demolding, the surface 61 of the skeleton concrete 60 is coated with mortar containing the first locking portion 10 and the second locking portion 35 of the mortar holder A, the metal locking portion 50, and (the concave groove 20 having the convex portion 21). The surface 6 is exposed to the outside (FIG. 19 (b)).
After that, the mortar 63 is applied to the surface 61 of the skeleton concrete 60. In the embedded portion of the mortar holder A, a part of the applied mortar 63 enters the entire length of the concave groove 20 inside the support frame 30 when the concave groove 20 is provided, and the first locking is performed. The portion 10, the second locking portion 35, and the metal locking portion 50 are taken into the mortar 63 and cured (FIG. 19 (c)).
When the convex portion 21 is provided, the mortar 63 further enters the inside corner 22 of the convex portion 21 in the concave groove 20.

第１係止部１０の内側に入り込んで硬化したモルタル６３は、凹溝２０の全長に入り込んだモルタル６３と一体化して当該部分のモルタル６３の全体を抱きかかえるような状態となる。そして、凹溝２０内に侵入したモルタル６３は、凸部２１が存在する場合、凹溝２０内に設けられた凸部２１がネックとなり、凹溝２０内で硬化したモルタル６３の侵入部分が凸部２１の全長に亙って係止され、凸部２１内で固まったモルタル６３が凹溝２０内から脱落しない。そしてこの凸部２１は凹溝２０の内周面にコネクター部１の一部として設けられているので、細いループ状の第１係止部１０と異なり、破損しにくく、しかも剪断力を受けないのでモルタル保持力を飛躍的に高める。換言すれば、凸部２１と第１係止部１０との相乗効果で従来の保持具より、少なくとも２．６倍の高いアンカー効果を発揮する。仮に、第１係止部１０が切断しても凸部２１による係止は残り、これだけでも高いアンカー効果を発揮する。 The mortar 63 that has entered the inside of the first locking portion 10 and has hardened is integrated with the mortar 63 that has entered the entire length of the concave groove 20, and is in a state of holding the entire mortar 63 of the portion. When the convex portion 21 is present, the convex portion 21 provided in the concave groove 20 becomes a neck of the mortar 63 that has penetrated into the concave groove 20, and the invaded portion of the mortar 63 cured in the concave groove 20 is convex. The mortar 63, which is locked over the entire length of the portion 21 and solidified in the convex portion 21, does not fall out of the concave groove 20. Since the convex portion 21 is provided on the inner peripheral surface of the concave groove 20 as a part of the connector portion 1, unlike the thin loop-shaped first locking portion 10, it is not easily damaged and is not subjected to shearing force. Therefore, the mortar holding power is dramatically improved. In other words, the synergistic effect of the convex portion 21 and the first locking portion 10 exerts an anchor effect at least 2.6 times higher than that of the conventional holder. Even if the first locking portion 10 is cut, the locking by the convex portion 21 remains, and this alone exhibits a high anchoring effect.

第２係止部３５は、頭部３７が脚部３６より直径が大であるから、硬化したモルタル６３に頭部３７と脚部３６を埋設した状態となる。この部分が埋設されている部分のモルタル６３が細かく割れて小さな破片となった場合、直径の大きな頭部３７が割れた破片から抜けず、これを壁面からぶら下げるような形となり、モルタル破片の剥落も防止できるようになる。 Since the head 37 has a larger diameter than the legs 36, the second locking portion 35 is in a state where the head 37 and the legs 36 are embedded in the hardened mortar 63. When the mortar 63 in the part where this part is buried is broken into small pieces, the head 37 with a large diameter does not come out of the broken pieces, and it is shaped like hanging from the wall surface, and the mortar pieces are peeled off. Will also be able to prevent.

（図１９(ｄ)）は、第１実施形態と同様、建物が火災に遭遇し、モルタル保持具Ａの樹脂部分であるコネクター部１と支持枠３０とが高熱のために炭化或いは焼失した状態を示す。この状態における金属係止部５０の作用効果については、第１実施形態の記載を援用する。 (FIG. 19 (d)) shows a state in which the building encounters a fire and the connector portion 1 and the support frame 30, which are the resin portions of the mortar holder A, are carbonized or burnt down due to high heat, as in the first embodiment. Is shown. Regarding the action and effect of the metal locking portion 50 in this state, the description of the first embodiment is referred to.

なお、本発明のモルタル保持具Ａに使用される樹脂としては、射出成形が容易な熱可塑性樹脂が好ましいが、必要により熱硬化性樹脂であってもよい。例えば熱可塑性樹脂としては、ナイロン、ポリフェニレンサルファイド（ＰＰＳ）、ポリエステル、ポリエチレン、ポリプロピレン、ポリスチレン、高衝撃ポリスチレン（ＨＩＰＳ）、ＡＢＳ樹脂、変性ポリフェニレンオキサイド（変性ＰＰＯ）、ポリアミドエラストマー、ポリエステルエラストマーなどを例示することができる。しかし、コンクリートはアルカリ性であるので、これらのうちでも耐アルカリ性に優れ、かつ耐熱性に優れているＰＰＳ樹脂やナイロン樹脂が特に好ましい。 The resin used in the mortar holder A of the present invention is preferably a thermoplastic resin that can be easily injection-molded, but may be a thermosetting resin if necessary. Examples of the thermoplastic resin include nylon, polyphenylene sulfide (PPS), polyester, polyethylene, polypropylene, polystyrene, high impact polystyrene (HIPS), ABS resin, modified polyphenylene oxide (modified PPO), polyamide elastomer, polyester elastomer and the like. be able to. However, since concrete is alkaline, PPS resin and nylon resin having excellent alkali resistance and heat resistance are particularly preferable.

また、これらの樹脂には、ガラス繊維、炭素繊維などの短繊維状の補強繊維を混入させた繊維強化樹脂を使用してもよい。繊維強化樹脂の場合は、モルタルの接着力を一層向上させ、剥落防止性能をさらに向上させることができる。 Further, as these resins, a fiber reinforced resin in which short fiber-like reinforcing fibers such as glass fiber and carbon fiber are mixed may be used. In the case of the fiber reinforced resin, the adhesive strength of the mortar can be further improved, and the peeling prevention performance can be further improved.

Ａ：コネクター兼用モルタル保持具、Ｈ：閉空間、Ｋ：剥離（膨れ、亀裂）、Ｖ：空洞、Ｗ：開口幅、１：コネクター部、２：コネクター本体部分、３：円板状の部分、４：台状部分、４ａ：畝状部、５：円筒状の部分、６：対向面（モルタル塗布面）、７：リブ、８：段部、９：通孔、１０：第１係止部、１１：脚部、２０：凹溝、２１：凸部、２２：入隅、３０：支持枠、３１：内鍔部、３２：嵌め込み段部、３３：内鍔孔部、３４：環状当接部、３５：第２係止部、３６：脚部、３７：頭部、４０：スキンキャッチャー、４０ａ：ナット本体部分、４１：仕切壁、４２：（型枠締付用ボルトの）ネジ孔、４３：（セパボルト用の）ネジ孔、４５：外鍔部、５０：金属係止部、５２：モルタル係止孔、５３：取付部、５３ａ：取付孔、５４：リング部分、５５：連結アーム部分、５６：圧入リング、６０：躯体コンクリート、６１：表面、６３：モルタル、７０：セパボルト、７１：型枠、７２：型枠締付用ボルト、７３：横端太材、７４：固定部材、７５：締付けナット A: Mortar holder for both connectors, H: Closed space, K: Peeling (bulging, cracking), V: Cavity, W: Opening width, 1: Connector part, 2: Connector body part, 3: Disc-shaped part, 4: Trapezoidal part, 4a: ridged part, 5: cylindrical part, 6: facing surface (mortar coating surface), 7: rib, 8: stepped part, 9: through hole, 10: first locking part , 11: Leg, 20: Concave groove, 21: Convex, 22: Inner corner, 30: Support frame, 31: Inner flange, 32: Fitting step, 33: Inner flange, 34: Circular contact Part, 35: Second locking part, 36: Leg part, 37: Head, 40: Skin catcher, 40a: Nut body part, 41: Partition wall, 42: Screw hole (of bolt for tightening mold), 43: Screw hole (for sepa bolt), 45: Outer flange part, 50: Metal locking part, 52: Mortar locking hole, 53: Mounting part, 53a: Mounting hole, 54: Ring part, 55: Connecting arm part , 56: Press-fit ring, 60: Frame concrete, 61: Surface, 63: Mortar, 70: Sepa bolt, 71: Form, 72: Form tightening bolt, 73: Horizontal end thick material, 74: Fixing member, 75 : Tightening nut

Claims (9)

コンクリート打設用の型枠内にセットされるセパボルトに連結される金属製のスキンキャッチャーと、
前記スキンキャッチャーが取り付けられて躯体コンクリート内に埋設され、前記型枠に対する対向面が躯体コンクリートの表面に露出する樹脂製のコネクター部と、
前記コネクター部に取り付けられ、前記型枠の内面に当接し、前記内面と前記内面に対する前記コネクター部の対向面との間の空間を囲繞して閉空間とする支持枠と、
前記閉空間内にてスキンキャッチャーから延出し、前記躯体コンクリートの表面に塗布されたモルタルを保持する金属係止部とで構成されたことを特徴とするコネクター兼用モルタル保持具。
A metal skin catcher connected to a sepabolt set in a concrete casting formwork,
A resin connector portion to which the skin catcher is attached and embedded in the skeleton concrete, and the surface facing the formwork is exposed on the surface of the skeleton concrete.
A support frame attached to the connector portion, abutting on the inner surface of the formwork, and surrounding the space between the inner surface and the facing surface of the connector portion with respect to the inner surface to form a closed space.
A connector-combined mortar holder comprising a metal locking portion that extends from a skin catcher in the closed space and holds the mortar applied to the surface of the skeleton concrete.
 金属係止部にモルタルを保持するモルタル係止孔が穿設されていることを特徴とする請求項１に記載のコネクター兼用モルタル保持具。
The connector-combined mortar holder according to claim 1, wherein a mortar locking hole for holding the mortar is formed in the metal locking portion.
 金属係止部は、スキンキャッチャーのナット本体部分から一体的に延出された外鍔状の延出部分であることを特徴とする請求項１又は２に記載のコネクター兼用モルタル保持具。
The connector-combined mortar holder according to claim 1 or 2, wherein the metal locking portion is an outer collar-shaped extending portion integrally extending from the nut main body portion of the skin catcher.
 金属係止部は、スキンキャッチャーのナット本体部分とは別体に形成され、前記ナット本体部分に溶接されて前記ナット本体部分から一体的に延出されている外鍔状の延出部分であることを特徴とする請求項１又は２に記載のコネクター兼用モルタル保持具。
The metal locking portion is an outer collar-shaped extending portion that is formed separately from the nut main body portion of the skin catcher, is welded to the nut main body portion, and integrally extends from the nut main body portion. The connector-combined mortar holder according to claim 1 or 2.
 金属係止部は、スキンキャッチャーのナット本体部分とは別体に形成され、前記金属係止部に穿設した取付孔に前記ナット本体部分が圧入されて前記ナット本体部分から一体的に延出されている外鍔状の延出部分であることを特徴とする請求項１又は２に記載のコネクター兼用モルタル保持具。
The metal locking portion is formed separately from the nut main body portion of the skin catcher, and the nut main body portion is press-fitted into a mounting hole formed in the metal locking portion and extends integrally from the nut main body portion. The connector-combined mortar holder according to claim 1 or 2, wherein the outer flange-shaped extending portion is formed.
 前記コネクター部の前記対向面に塗布された前記モルタル内に埋設される第１係止部が前記対向面に更に設けられていることを特徴とする請求項１～５のいずれかに記載のコネクター兼用モルタル保持具。
The connector according to any one of claims 1 to 5, wherein a first locking portion embedded in the mortar coated on the facing surface of the connector portion is further provided on the facing surface. Combined mortar holder.
 モルタルが塗布されるコネクター部の対向面に凹溝が形成され、第１係止部が、前記凹溝を跨ぐように設けられていることを特徴とする請求項６に記載のコネクター兼用モルタル保持具。
The connector-combined mortar holding according to claim 6, wherein a concave groove is formed on the facing surface of the connector portion to which the mortar is applied, and the first locking portion is provided so as to straddle the concave groove. Ingredients.
 前記凹溝の内面に凸部が形成されていることを特徴とする請求項７に記載のコネクター兼用モルタル保持具。
The connector-combined mortar holder according to claim 7, wherein a convex portion is formed on the inner surface of the concave groove.
 前記閉空間内で、支持枠から前記第１係止部の周囲を取り囲むように、塗布された前記モルタル６３内に埋設されるフック状の第２係止部が設けられていることを特徴とする請求項１～８のいずれかに記載のコネクター兼用モルタル保持具。 In the closed space, a hook-shaped second locking portion embedded in the coated mortar 63 is provided so as to surround the periphery of the first locking portion from the support frame. The connector-combined mortar holder according to any one of claims 1 to 8.
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JP2000240284A (en) * 1998-12-24 2000-09-05 Toray Ind Inc Mortar adhesion auxiliary tool also served as connecter
WO2001055531A1 (en) * 2000-01-28 2001-08-02 Toray Industries,Inc. Auxiliary tool for fixing wall material, and its production method, and method for producing concrete structure using the auxiliary tool for fixing wall material
JP2018155062A (en) * 2017-03-21 2018-10-04 株式会社祥起 Adhesion auxiliary tool and adhesion auxiliary system having the adhesion auxiliary tool
JP2019027148A (en) * 2017-07-31 2019-02-21 株式会社祥起 Metal resin mixed type adhesion assisting tool and construction method of mortar wall against concrete wall using metal resin mixed type adhesion assisting tool
JP2019065643A (en) * 2017-10-04 2019-04-25 株式会社祥起 Metal-resin mixed type adhesion auxiliary device, and method for constructing mortar wall to concrete wall using metal-resin mixed type adhesion auxiliary device
JP6705047B1 (en) * 2019-12-18 2020-06-03 株式会社祥起 Metal-resin composite type bonding aid

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JP3976427B2 (en) 1998-11-30 2007-09-19 東レ株式会社 Connector / mortar adhesion aid

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5809725A (en) * 1995-07-18 1998-09-22 Plastedil S.A. Sectional nog structure for fastening a covering element to a foamed plastic slab and construction element incorporating said structure
JP2000240284A (en) * 1998-12-24 2000-09-05 Toray Ind Inc Mortar adhesion auxiliary tool also served as connecter
WO2001055531A1 (en) * 2000-01-28 2001-08-02 Toray Industries,Inc. Auxiliary tool for fixing wall material, and its production method, and method for producing concrete structure using the auxiliary tool for fixing wall material
JP2018155062A (en) * 2017-03-21 2018-10-04 株式会社祥起 Adhesion auxiliary tool and adhesion auxiliary system having the adhesion auxiliary tool
JP2019027148A (en) * 2017-07-31 2019-02-21 株式会社祥起 Metal resin mixed type adhesion assisting tool and construction method of mortar wall against concrete wall using metal resin mixed type adhesion assisting tool
JP2019065643A (en) * 2017-10-04 2019-04-25 株式会社祥起 Metal-resin mixed type adhesion auxiliary device, and method for constructing mortar wall to concrete wall using metal-resin mixed type adhesion auxiliary device
JP6705047B1 (en) * 2019-12-18 2020-06-03 株式会社祥起 Metal-resin composite type bonding aid

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