JP2010101372A - T-nut - Google Patents

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JP2010101372A
JP2010101372A JP2008271926A JP2008271926A JP2010101372A JP 2010101372 A JP2010101372 A JP 2010101372A JP 2008271926 A JP2008271926 A JP 2008271926A JP 2008271926 A JP2008271926 A JP 2008271926A JP 2010101372 A JP2010101372 A JP 2010101372A
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nut
shaft portion
female screw
sealing member
shaft
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Yutaka Nagayama
豊 永山
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Nagayama Electronic Industry Co Ltd
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Nagayama Electronic Industry Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a T-nut capable of preventing paint, oil, foaming material, and foreign matters from intruding into the shaft section thereof, enabling a female screw to be formed to the front end of the shaft section since female screw machining can be easily performed, packaged compactly, and manufacturable at low cost. <P>SOLUTION: This T-nut 1 includes the metal cylindrical shaft section 2, and a metal flange section 6 extending outward from the first end 2a of the shaft section 2. The female screw 4 is formed in the inner peripheral surface of the shaft section 2, and claws 7 extending from the first end 2a of the shaft section 2 toward the second end 2b thereof are formed on the flange section 6. The shaft section 2 is hollowed through. An opening 3 at the first end 2a of the shaft section 2 is sealed by a sealing member 11 formed of a synthetic resin material or the like. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、中空の軸部の第１の端部に外方に向けて張り出すように形成されるフランジ部に爪又は突起が形成されてなるＴナットに係り、特に、軸部の第１の端部の開口が封止部材によって封止されるようにしたＴナットに関する。   The present invention relates to a T-nut in which a claw or a protrusion is formed on a flange portion formed so as to project outward from a first end portion of a hollow shaft portion. The present invention relates to a T-nut in which the opening at the end of is sealed with a sealing member.

従来のＴナットとして、例えば図１３（ａ）に示すように、中空の軸部２の第１の端部２ａから外方へ張出すフランジ部６を備えたものが提案されている（例えば、特許文献１参照）。このようなＴナット１は、例えば鉄系の金属板を板金加工することにより一体に得られ、中空貫通状の軸部２の第１の端部側の内周面には雌ねじ４が形成され、第２の端部側は薄肉状とされてかしめ予定部５となっており、フランジ部６は八角形に形成され、その外周縁には、軸部２の第２の端部２ｂに向けた爪７が切り起こしによって形成され、軸部２の第１の端部２ａは開口３となっている。このようなＴナット１では、軸部２の内周面に雌ねじ４を形成する場合、軸部２の第１の端部側又は第２の端部側の何れの側からでもねじ切り加工を容易に行うことができる。   As a conventional T-nut, for example, as shown in FIG. 13 (a), a nut having a flange portion 6 projecting outward from the first end 2a of the hollow shaft portion 2 has been proposed (for example, Patent Document 1). Such a T-nut 1 is obtained by, for example, sheet metal processing of an iron-based metal plate, and a female screw 4 is formed on the inner peripheral surface on the first end side of the hollow penetrating shaft portion 2. The second end portion side is thinned to form a caulking scheduled portion 5, the flange portion 6 is formed in an octagonal shape, and the outer peripheral edge thereof is directed to the second end portion 2 b of the shaft portion 2. The claw 7 is formed by cutting and raising, and the first end 2 a of the shaft portion 2 is an opening 3. In such a T-nut 1, when the internal thread 4 is formed on the inner peripheral surface of the shaft 2, threading can be easily performed from either the first end side or the second end side of the shaft 2. Can be done.

また、そのＴナット１を固着対象物に打ち込む場合、例えば図１３（ｂ）に示すように、Ｔナット貯留タンク（図示省略）からシューター２１を介して打ち込み装置（図示省略）にＴナット１を供給する際に、シューター２１内でフランジ部６を下に向けて連続的に自動供給することができるため、「ホッパーフィードＴナット」とも称され、特に、シューター２１内でのＴナット１の向きを規制するために、八角形に形成されたフランジ部６の縦横の長さを異ならせている。尚、ホッパーフィードＴナットの詳細については、例えば英国特許第１，１５７，７３４号明細書に記載されている。   When the T-nut 1 is driven into an object to be fixed, for example, as shown in FIG. 13B, the T-nut 1 is inserted into a driving device (not shown) from a T-nut storage tank (not shown) via a shooter 21. When supplying, the flange portion 6 can be automatically supplied continuously downward in the shooter 21, so it is also called a “hopper feed T-nut”, and in particular, the direction of the T-nut 1 in the shooter 21. In order to regulate the length, the length and width of the flange portion 6 formed in an octagon are made different. The details of the hopper feed T-nut are described in, for example, British Patent No. 1,157,734.

このようなＴナット１は、例えば図１３（ｃ）に示すような態様で使用される。即ち、固着対象物９に形成した下孔２２に、Ｔナット１の軸部２を挿入した状態で、かしめ機によりかしめ予定部分５にかしめ加工が施され、固着対象物９の他側面９ｂにおいてかしめ予定部分５が外方に向けてかしめられて湾曲状のかしめ部分５ａが固着対象物９に係止されるように形成される。このとき同時に、爪７が固着対象物９の一側面９ａ内に食込む状態とされる。このような取付状態では、爪７によってＴナット１の回転が阻止されると共に、フランジ部６とかしめ部分５ａとによって固着対象物９が挟持されるため、Ｔナット１が下孔２２から抜け出るのが阻止され、Ｔナット１は固着対象物９に強固に固定される。   Such a T-nut 1 is used in a mode as shown in FIG. That is, caulking is performed on the portion 5 to be caulked by the caulking machine in a state where the shaft portion 2 of the T-nut 1 is inserted into the prepared hole 22 formed in the adhering object 9, and the other side surface 9b of the adhering object 9 is caulked. The caulking scheduled portion 5 is caulked outward, and the curved caulking portion 5 a is locked to the fixing object 9. At the same time, the nail 7 is in a state of biting into one side surface 9a of the object 9 to be fixed. In such a mounting state, the rotation of the T-nut 1 is prevented by the claw 7 and the fixing object 9 is held between the flange portion 6 and the caulking portion 5a, so that the T-nut 1 comes out of the lower hole 22. The T-nut 1 is firmly fixed to the fixing object 9.

しかし、このような軸部２が貫通状になっているＴナット１では、以下のような問題があった。即ち、例えば図１３（ｃ）に示すように、Ｔナット１が固着対象物９に固定された後、固着対象物９の表面処理のために、その一側面９ａを油や塗料中に浸漬することがある。そのような場合に、軸部２の第１の端部２ａの開口３から内部に油や塗料中が浸入して雌ねじ４に付着することがあった。そのような場合には、雌ねじ４に付着した油や塗料を取り除くために大変な労力を要するという問題があった。   However, the T nut 1 having such a shaft portion 2 penetrating has the following problems. That is, for example, as shown in FIG. 13C, after the T-nut 1 is fixed to the fixing object 9, one side surface 9a is immersed in oil or paint for surface treatment of the fixing object 9. Sometimes. In such a case, oil or paint may enter the inside from the opening 3 of the first end 2a of the shaft portion 2 and adhere to the female screw 4. In such a case, there has been a problem that a great deal of labor is required to remove the oil and paint adhering to the female screw 4.

そこで、このような問題を解消するために、例えば、中空の軸部の第１の端部が筒底封止部材で封止されるように構成されたＴナットが提案された（例えば、特許文献２参照）。この例では、軸部とフランジ部及び筒底封止部材は一体の金属材料で形成され、その筒底封止部材によって軸部の第１の端部が封止されており、軸部の少なくとも一部に雌ねじが形成され、八角形に形成されたフランジ部の外周縁には、軸部の第１の端部から第２の端部に向けて爪が切り起こしによって形成されている。このような構成によれば、Ｔナットが固着対象物に固定された後、固着対象物の表面処理のために、その一側面を油や塗料中に浸漬しても、筒底封止部材によって、軸部内に油や塗料が浸入するのを防ぐことができ、後工程で、ボルト（図示省略）を雌ねじに健全に締結することができる。   Therefore, in order to solve such a problem, for example, a T-nut configured such that the first end portion of the hollow shaft portion is sealed with a cylinder bottom sealing member has been proposed (for example, a patent) Reference 2). In this example, the shaft portion, the flange portion, and the tube bottom sealing member are formed of an integral metal material, and the tube end sealing member seals the first end portion of the shaft portion, and at least the shaft portion is sealed. A female screw is partially formed, and a claw is formed by cutting and raising the outer peripheral edge of the octagonal flange portion from the first end portion to the second end portion of the shaft portion. According to such a configuration, after the T nut is fixed to the fixing object, even if one side surface is immersed in oil or paint for surface treatment of the fixing object, the cylinder bottom sealing member It is possible to prevent oil and paint from entering the shaft portion, and a bolt (not shown) can be securely fastened to the female screw in a subsequent process.

また、例えば中空の軸部の第２の端部が封止されるように構成されたＴナットも提案されている（例えば、特許文献３参照）。この例では、軸部におけるかしめ予定部の先端部分に連続してキャップ部が一体に設けられており、そのキャップ部によって軸部の第２の端部が封止されている。このような構成によれば、固着対象物にＴナットを打込む際に、キャップ部によって固着対象物が排除されるため、予め固着対象物にＴナットを打込むための下孔を設ける必要がなくなる。また、そのキャップ部によって軸部内に油や塗料が浸入するのを防ぐことができる。   In addition, for example, a T-nut configured so that the second end of the hollow shaft portion is sealed has also been proposed (see, for example, Patent Document 3). In this example, a cap portion is provided integrally with the tip portion of the portion to be caulked in the shaft portion, and the second end portion of the shaft portion is sealed by the cap portion. According to such a configuration, when the T-nut is driven into the fixed object, the fixed object is eliminated by the cap portion. Therefore, it is necessary to provide a pilot hole for driving the T-nut into the fixed object in advance. Disappear. In addition, the cap portion can prevent oil and paint from entering the shaft portion.

一方、例えば図１４に示すように、両端を開口させた中空状の軸部２の内周面に雌ねじ４を形成したＴナット１を多数整列状態に配列させて、第１の端部２ａの開口を粘着テープ２９によって閉塞するようにしたテープドＴナットも提案されている（例えば、特許文献４参照）。このようなテープドＴナットでは、粘着テープ２９で開口を封止する前に、ねじ切り工程を設定すれば、個々のＴナット１の軸部２の第１の端部側又は第２の端部側の何れの側からでもねじ切り加工を容易に行うことができ、十分な長さの雌ねじ４を形成することができる。図示の例では、各フランジ部６が隣り合うように一列に整列された多数個のＴナット１の各フランジ部６の表面に一本の粘着テープ２９が貼り付けられることによって各Ｔナット１が、軸部２の第１の端部２ａの開口を閉塞された状態で接続される。このように、粘着テープ２９によって一列に接続されたＴナット群を渦巻き状に巻回して円盤状にした状態で梱包して出荷され、使用時には、巻回した渦巻き状のＴナット１が、Ｔナット打ち込み機の載置テーブルにセットされ、順次、所定の打ち込み位置に、１個ずつ搬送されていた。このようなＴナット１においても、粘着テープ２９によって軸部２の第１の端部２ａの開口が閉塞されるため、前記従来例（特許文献２，３等）と同様に、油や塗料が軸部２内に浸入するのを防ぐことができる。
特開平６−３２３３１５号公報 特開２００４−８４９３７号公報 特開２００１−２００８２７号公報 特開２００４−１７２５０号公報 On the other hand, as shown in FIG. 14, for example, a large number of T nuts 1 having female threads 4 formed on the inner peripheral surface of a hollow shaft portion 2 having both ends opened are arranged in an aligned state, and the first end portion 2a A taped T-nut whose opening is closed with an adhesive tape 29 has also been proposed (see, for example, Patent Document 4). In such a taped T-nut, if a threading process is set before sealing the opening with the adhesive tape 29, the first end side or the second end side of the shaft portion 2 of each T-nut 1 will be described. Therefore, the threading process can be easily performed from either side, and the female screw 4 having a sufficient length can be formed. In the illustrated example, a single adhesive tape 29 is attached to the surface of each flange portion 6 of a large number of T nuts 1 aligned in a row so that the flange portions 6 are adjacent to each other, whereby each T nut 1 is attached. The opening of the first end 2a of the shaft 2 is connected in a closed state. In this way, the T-nut groups connected in a row by the adhesive tape 29 are wound in a spiral shape and packed and shipped in a disk shape. They were set on the placing table of the nut driving machine and were sequentially transferred one by one to a predetermined driving position. Even in such a T-nut 1, since the opening of the first end 2a of the shaft portion 2 is blocked by the adhesive tape 29, oil and paint are applied as in the conventional example (Patent Documents 2, 3 and the like). Intrusion into the shaft portion 2 can be prevented.
JP-A-6-323315 JP 2004-84937 A JP 2001-200247 A JP 2004-17250 A

上述のように、軸部とフランジ部が一体の金属材料で形成されるＴナットにおいて、軸部の第１の端部又は第２の端部が封止されるような従来の構成（特許文献２，３等）では、軸部の内周面に雌ねじを形成するねじ切り工程で、その筒底封止部材又はキャップ部が障害となって、多大の手間を要するだけでなく、雌ねじを十分な長さにわたって形成することができないという問題があった。つまり、軸部の何れか一方の開口、即ち、第１の端部又は第２の端部が封止される場合、ねじ切り工程では、タップを軸部に貫通状態に移動させることができず、軸部内でタップを往復動作させなければならないため、工程が複雑化して多大の時間を要していた。また、筒底封止部材又はキャップ部によって、タップの前進位置が規制されるため、軸部の先端までタップを前進させることができず、筒底封止部材又はキャップ部の手前の部分に雌ねじを形成できない部分が生じていた。   As described above, in the T nut in which the shaft portion and the flange portion are formed of an integral metal material, the conventional configuration in which the first end portion or the second end portion of the shaft portion is sealed (Patent Document) 2 and 3, etc.), in the threading step of forming a female screw on the inner peripheral surface of the shaft portion, the tube bottom sealing member or the cap portion becomes an obstacle, and not only a great deal of labor is required, but also the female screw is sufficient. There was a problem that it could not be formed over the length. That is, when any one of the openings of the shaft portion, i.e., the first end portion or the second end portion is sealed, in the threading process, the tap cannot be moved through the shaft portion, Since the tap has to be reciprocated within the shaft, the process is complicated and requires a lot of time. In addition, since the advance position of the tap is regulated by the tube bottom sealing member or the cap portion, the tap cannot be advanced to the tip of the shaft portion, and a female screw is provided on the front portion of the tube bottom sealing member or the cap portion. There was a part that could not be formed.

また、多数個のＴナット１を粘着テープ２９に貼り付けたテープドＴナット（例えば、特許文献４等，図１４参照）では、次のような問題があった。即ち、テープドＴナットでは、上述のように、粘着テープ２９によって一列に接続されたＴナット群をリング状に巻回して円盤状にした状態で梱包するため、その梱包が大変嵩高いものとなり、梱包費や輸送費が著しく高くなるという問題があった。また、その搬送過程や取扱時に、振動や他物との接触等によって粘着テープ２９が剥がれたり、Ｔナット１が位置ずれしたり脱落したりすることがあった。また、打ち込み時に、周囲温度の影響で粘着テープ２９の粘着力が低下し、脱落しないまでもＴナットが位置ずれして、所定の打ち込み位置に精度よく打ち込めないこともあった。あるいは、粘着テープ２９の粘着剤が溶け出して、Ｔナット１やその周辺部分に付着して汚染の原因になることもあった。   Further, a taped T-nut (for example, see Patent Document 4 and the like, see FIG. 14) in which a large number of T-nuts 1 are attached to the adhesive tape 29 has the following problems. That is, in the taped T-nut, as described above, the T-nut group connected in a row by the adhesive tape 29 is wound in a ring shape and packed in a disk shape, so that the packing becomes very bulky. There has been a problem that the packing cost and the transportation cost become remarkably high. Further, during the conveyance process or handling, the adhesive tape 29 may be peeled off due to vibration or contact with other objects, or the T-nut 1 may be displaced or dropped. Further, at the time of driving, the adhesive force of the pressure-sensitive adhesive tape 29 is reduced due to the influence of the ambient temperature, and the T-nut may be displaced until it does not fall off, so that it cannot be accurately driven into a predetermined driving position. Alternatively, the adhesive of the adhesive tape 29 may melt and adhere to the T-nut 1 or its peripheral part, causing contamination.

本発明は、このような事情に鑑みてなされ、軸部内に塗料や油、発泡材、異物等が浸入することがなく、また、雌ねじ加工が容易で、軸部の先端まで雌ねじを形成することができ、しかも、コンパクトに梱包することができるコスト安なＴナットを提供することを目的とする。   The present invention has been made in view of such circumstances, and paint, oil, foamed material, foreign matter, etc. do not enter the shaft portion, and the internal thread can be easily formed to the tip of the shaft portion. An object is to provide a low-cost T-nut that can be packaged in a compact manner.

本発明のＴナットは、金属材料からなる、筒状の軸部と、該軸部の第１の端部に外方に向けて張り出し形成されるフランジ部と、を備え、軸部の内周面には雌ねじが形成され、フランジ部には、軸部の第１の端部から第２の端部に向けた爪又は突起が形成されてなるＴナットであって、
前記軸部は、中空貫通状に形成され、かつ、該軸部の第１の端部の開口は、封止部材によって封止され、該封止部材は、合成樹脂材、ゴム材又は前記軸部を形成する金属材料とは別体の金属材料からなることを特徴とする。 A T-nut of the present invention includes a cylindrical shaft portion made of a metal material, and a flange portion formed outwardly projecting from a first end portion of the shaft portion, and an inner periphery of the shaft portion. The surface is formed with a female screw, and the flange portion is a T-nut formed with a claw or a protrusion formed from the first end portion of the shaft portion toward the second end portion,
The shaft portion is formed in a hollow penetrating shape, and the opening of the first end portion of the shaft portion is sealed by a sealing member, and the sealing member is made of a synthetic resin material, a rubber material, or the shaft. It is characterized by comprising a metal material separate from the metal material forming the part.

前記第１の端部から第２の端部に向けた爪が、前記フランジ部の外周部に２対形成され、該２対の爪は、前記フランジ部の径方向に対向するように配置され、前記フランジ部が全体として角形形状をなしてもよい。   Two pairs of claws directed from the first end portion toward the second end portion are formed on the outer peripheral portion of the flange portion, and the two pairs of claws are disposed so as to face each other in the radial direction of the flange portion. The flange portion may form a square shape as a whole.

前記軸部の第１の端部の開口を封止する封止部材の外表面は、フランジ部の外表面に対して、面一状又は凹状に形成されてもよい。   The outer surface of the sealing member that seals the opening of the first end portion of the shaft portion may be formed flush or concave with respect to the outer surface of the flange portion.

前記封止部材は、前記軸部の第１の端部の開口を封止する蓋部と、前記軸部の内周面又は雌ねじの一部に係合する係合部と、を備えてもよい。   The sealing member may include a lid portion that seals the opening of the first end portion of the shaft portion, and an engagement portion that engages with an inner peripheral surface of the shaft portion or a part of the female screw. Good.

前記軸部には、第２の端部から所定の長さにわたって、固着対象物に対してかしめ固定されるかしめ予定部が形成されてもよい。   The shaft portion may be formed with a predetermined caulking portion that is caulked and fixed to the object to be fixed over a predetermined length from the second end portion.

前記軸部における、第２の端部と、前記雌ねじが形成される雌ねじ形成部と、の間には、前記雌ねじ形成部よりも大きな内径と、前記雌ねじ形成部よりも大きな外径を有するステップバレル部が形成されてもよい。   A step having a larger inner diameter than the female screw forming portion and a larger outer diameter than the female screw forming portion between the second end portion of the shaft portion and the female screw forming portion where the female screw is formed. A barrel portion may be formed.

前記爪又は突起は、前記フランジ部の外周縁に、ギザギザ状又はフック状に形成されてもよい。   The claw or protrusion may be formed in a jagged shape or a hook shape on the outer peripheral edge of the flange portion.

前記雌ねじ形成部の外周面の一部には、前記雌ねじの一部を不整化した不整化部分を形成するための凹部が形成されてもよい。   A recess for forming an irregular portion in which a portion of the female screw is irregular may be formed on a part of the outer peripheral surface of the female screw forming portion.

本発明のＴナットによれば、中空貫通状に形成された軸部の第１の端部の開口が封止部材によって封止されるので、固着対象物に打ち込んだ後に、軸部内に塗料や油、発泡材、異物等が浸入するのを防ぐことができる。また、その開口を封止部材で封止する前に、雌ねじ加工をすれば、タップを軸部に貫通動作させることができるため、ねじ切り加工が容易になり、より短い時間で雌ねじを形成することができ、生産性が向上する。また、軸部の先端まで十分な長さの雌ねじを形成することができる。そして、封止部材の外表面を、フランジ部の外表面に対して面一状又は凹状に形成すれば、Ｔナットの打ち込み工程において、Ｔナット貯留タンクからシューターを介して打ち込み装置にＴナットを供給する際に、封止部材が邪魔にならず、シューター内でフランジ部（第１の端部側）を下に向けて安定な姿勢で円滑に供給することができる。   According to the T nut of the present invention, since the opening of the first end portion of the shaft portion formed in the hollow through shape is sealed by the sealing member, after driving into the fixed object, paint or It is possible to prevent oil, foam material, foreign matter and the like from entering. In addition, if the female thread is processed before the opening is sealed with the sealing member, the tap can be penetrated through the shaft portion, so that threading is facilitated and the female thread can be formed in a shorter time. Can improve productivity. In addition, a female screw having a sufficient length can be formed up to the tip of the shaft portion. Then, if the outer surface of the sealing member is formed to be flush or concave with respect to the outer surface of the flange portion, in the T-nut driving process, the T-nut is inserted into the driving device from the T-nut storage tank via the shooter. When supplying, the sealing member does not get in the way, and it can be smoothly supplied in a stable posture with the flange portion (first end side) facing down in the shooter.

Ｔナットの軸部及びフランジ部と爪を金属材で形成し、封止部材は合成樹脂材やゴム材で形成するのが好ましい。その封止部材は、例えば、軸部の第１の端部の開口を封止する蓋部と、軸部の内周面又は雌ねじの一部に係合する係合部と、を備え、係合部は、蓋部の内側に設けられ、蓋部が開口を封止する方向に押圧されることにより、軸部の内周面又は雌ねじの一部に係合するように構成すればよい。このような封止部材は、合成樹脂材等の型成形により容易に形成することができ安価に得られるだけでなく、圧入により開口を容易に封止することができ、かつその材質の選択等によって搬送中や取扱い時に脱落しないように適度の強度や耐久性を具備させることもできる。かかる封止部材によって軸部の開口を封止した状態では、Ｔナットは個々に単体として独立した状態で取扱い梱包できるため、多数のＴナットをまとめてコンパクトに梱包することができ、梱包費及び輸送費を大幅に低減することができる。   It is preferable that the shaft portion and flange portion of the T-nut and the claws are formed of a metal material, and the sealing member is formed of a synthetic resin material or a rubber material. The sealing member includes, for example, a lid portion that seals the opening of the first end portion of the shaft portion, and an engaging portion that engages with an inner peripheral surface of the shaft portion or a part of the female screw. What is necessary is just to comprise a joint part so that it may be provided inside a cover part and it may be engaged with a part of inner peripheral surface of an axial part, or an internal thread, when a cover part is pressed in the direction which seals opening. Such a sealing member can be easily formed by molding of a synthetic resin material or the like and can be obtained at low cost, and the opening can be easily sealed by press-fitting, and the selection of the material, etc. Therefore, moderate strength and durability can be provided so as not to fall off during transportation or handling. In a state in which the opening of the shaft portion is sealed by such a sealing member, the T nuts can be handled and packed individually as a single unit, so a large number of T nuts can be packed together in a compact manner, and packing costs and Transportation costs can be greatly reduced.

以下に、本発明の実施の形態に係るＴナットについて図面を参照しつつ詳細に説明する。
（実施の形態１）
図１（ａ）はＴナット１の断面図、（ｂ）は別のＴナット１の断面図、（ｃ）は共通の底面図、（ｄ）は（ａ）（ｃ）に示すＴナット１の斜視図である。図１（ａ）（ｃ）（ｄ）に示すＴナット１は、筒状の軸部２と、軸部２の第１の端部２ａに外方に向けて張り出し形成されるフランジ部６と、を備え、軸部２の第１の端部２ａの側の内周面には雌ねじ４が形成され、第２の端部２ｂの側は若干薄肉状とされてかしめ予定部５が形成されている。フランジ部６には、軸部２の第１の端部２ａから第２の端部２ｂに向けた、ギザギザの形状を有する２対の爪７が、フランジ部６の外周縁の一部を切り起こすことによって形成され、フランジ部６の縦幅ｂは横幅ａよりも大に設定されている。図示の例では、２対の爪７，７は、フランジ部６の径方向に対向するように配置され、隣接し合う２個の爪７，７間が若干内側に向けて湾曲した円弧状の縦辺で結ばれ、フランジ部６の全体が角形形状（八角形）をなしているが、２個の爪７，７間は直線状の縦辺で結ばれてもよい。このように構成されるＴナット１の軸部２の第１の端部２ａの開口３は、封止部材１１によって封止されており、封止部材１１の外表面は、フランジ部６の外表面と面一状（又は凹状）とされる。この軸部２及びフランジ部６と爪７は一体の金属材料で形成されるのが好ましいが、別体の金属材料で形成されてもよい。また、軸部２は、内径と外径がストレートに形成されたものに限定されることなく、外径が第２の端部２ｂに向けて先細りのテーパー状に形成されたものや一部が径外方に膨出したもの、段状に形成されたもの等々、種々に変形された各種形状の筒状体を含む。この点については、以下の各実施の形態でも同じである。 Hereinafter, a T-nut according to an embodiment of the present invention will be described in detail with reference to the drawings.
(Embodiment 1)
1A is a sectional view of a T-nut 1, FIG. 1B is a sectional view of another T-nut 1, FIG. 1C is a common bottom view, and FIG. 1D is a T-nut 1 shown in FIGS. FIG. A T-nut 1 shown in FIGS. 1 (a), 1 (c), and 1 (d) includes a cylindrical shaft portion 2, and a flange portion 6 formed to project outward from the first end portion 2a of the shaft portion 2. Are formed on the inner peripheral surface of the shaft portion 2 on the first end portion 2a side, and the second end portion 2b side is slightly thinned to form the caulking planned portion 5. ing. In the flange portion 6, two pairs of claws 7 having a jagged shape from the first end portion 2 a to the second end portion 2 b of the shaft portion 2 cut a part of the outer peripheral edge of the flange portion 6. The vertical width b of the flange portion 6 is set larger than the horizontal width a. In the illustrated example, the two pairs of claws 7 and 7 are arranged so as to oppose each other in the radial direction of the flange portion 6, and the arcuate shape in which the gap between the two adjacent claws 7 and 7 is slightly curved inward. The two flanges 6 are connected to each other by a vertical side, and the entire flange portion 6 has a rectangular shape (octagonal shape), but the two claws 7 may be connected by a straight vertical side. The opening 3 of the first end 2 a of the shaft portion 2 of the T-nut 1 configured in this way is sealed by a sealing member 11, and the outer surface of the sealing member 11 is outside the flange portion 6. The surface is flush (or concave). The shaft portion 2 and the flange portion 6 and the claw 7 are preferably formed of an integral metal material, but may be formed of a separate metal material. Further, the shaft portion 2 is not limited to one having an inner diameter and an outer diameter that are formed straight, but a portion or a portion in which the outer diameter is tapered toward the second end 2b. It includes cylindrical bodies of various shapes that are variously deformed, such as those that bulge radially outward and those that are stepped. This is the same in the following embodiments.

一方、封止部材１１は、例えば型成形が可能な耐熱性の合成樹脂材、合成ゴム等で形成されるのが好ましく、軸部２の内周面に雌ねじ４を形成した後で、軸部２の第１の端部２ａの開口３に圧入等によって装着される。この封止部材１１は、例えば図２（ａ）〜（ｃ）に示すように、軸部２の第１の端部２ａの開口３を封止する円板状の蓋部１１ａと、軸部２の雌ねじ４の一部に係合する係合部１１ｂと、を備え、係合部１１ｂは、外周縁が周突状に形成されて円形状をなし蓋部１１ａの内側に同心円状に設けられ、蓋部１１ａが開口３を封止する方向に加圧されることにより、軸部２の雌ねじ４の一部に弾性的に係合し（図１（ａ）参照）、安定な封止状態が保持される。尚、封止部材１１は、圧入の他に、接着剤による接着や高周波による融着（溶着）等により、軸部２の第１の端部２ａの開口３に一体化されてもよく、その他、嵌合、螺合、係止、掛止等によって一体化されてもよい。あるいは、軸部２を形成する金属材料とは別体の金属材料からなる封止部材１１を、圧入等によって開口３に一体化してもよい。要するに、封止部材１１は、軸部２の第１の端部２ａの開口３を封止することができればよく、その素材や構成、形状等の如何を問わない。   On the other hand, the sealing member 11 is preferably formed of, for example, a heat-resistant synthetic resin material, synthetic rubber, or the like that can be molded, and after forming the internal thread 4 on the inner peripheral surface of the shaft portion 2, the shaft portion 2 is fitted into the opening 3 of the first end 2a. As shown in FIGS. 2A to 2C, for example, the sealing member 11 includes a disc-shaped lid portion 11a for sealing the opening 3 of the first end portion 2a of the shaft portion 2, and a shaft portion. An engaging portion 11b that engages with a part of the female screw 4, and the engaging portion 11b is formed in a circular shape with an outer peripheral edge formed in a circumferential shape, and is provided concentrically inside the lid portion 11a. When the lid portion 11a is pressurized in a direction to seal the opening 3, the lid portion 11a is elastically engaged with a part of the female screw 4 of the shaft portion 2 (see FIG. 1A), and is stably sealed. State is maintained. The sealing member 11 may be integrated with the opening 3 of the first end portion 2a of the shaft portion 2 by press-fitting, adhesive bonding, high-frequency fusion (welding), or the like. , Fitting, screwing, locking, latching, or the like. Alternatively, the sealing member 11 made of a metal material separate from the metal material forming the shaft portion 2 may be integrated into the opening 3 by press-fitting or the like. In short, the sealing member 11 only needs to be able to seal the opening 3 of the first end portion 2a of the shaft portion 2, and the material, configuration, shape, and the like are not limited.

また、図１（ｂ）（ｃ）に示すＴナット１は、軸部２の構成が、図１（ａ）（ｃ）（ｄ）のＴナット１とは異なる。即ち、雌ねじ形成部４ａの外周下部における軸部２の径方向に対向する２つの位置に凹部１４，１４が形成されている点が異なる。この凹部１４，１４は、挟み付け工具又は挟み付け装置等によって、雌ねじ形成部４ａの外周面の一部を両側から強く挟み付けることにより該部分を局部的に内方に強く押し潰すことによって形成することができる。その凹部１４，１４の形成位置は、フランジ部６（第１の端部２ａ）に近い位置を選択することが好ましい。フランジ部６から離間した位置では、凹部１４，１４を形成する前に、軸部２の断面が偏平状に変形してしまうからである。また、この凹部１４，１４は、爪７を形成する前に形成すれば、爪７が邪魔になることはない。このような凹部１４，１４を形成することによって、雌ねじ４の一部が径内方に向けて若干膨出するように変形（不整化）して不整化部分１５が形成される。このような不整化部分１５が形成されると、ボルト（図示省略）を締結する際に、ボルトをかなり強く回さないと不整化部分１５を通過させることができず、その不整化部分１５では、雌ねじ４の一部が潰されることもある。その結果、Ｔナット１に対するボルトの螺合状態をロックすることができる。従って、この不整化部分１５に至るまでボルトを螺進させれば、ボルトをロック状態に締結することができる。尚、凹部１４は単一であってもよい。その他に構成については、前記Ｔナット１と同じであり、説明を省略する。   In addition, the T-nut 1 shown in FIGS. 1B and 1C is different from the T-nut 1 shown in FIGS. That is, the difference is that the concave portions 14 are formed at two positions facing the radial direction of the shaft portion 2 in the lower portion of the outer periphery of the female screw forming portion 4a. The recesses 14 and 14 are formed by strongly squeezing a part of the outer peripheral surface of the female screw forming portion 4a from both sides by a clamping tool or a clamping device to strongly crush the part locally inward. can do. It is preferable to select a position close to the flange portion 6 (first end portion 2a) as the formation position of the recesses 14 and 14. This is because the cross section of the shaft portion 2 is deformed into a flat shape before the recesses 14 and 14 are formed at a position away from the flange portion 6. Moreover, if these recessed parts 14 and 14 are formed before forming the nail | claw 7, the nail | claw 7 will not become obstructive. By forming such concave portions 14, 14, the irregular portion 15 is formed by deforming (arrangement) so that a part of the female screw 4 slightly bulges inward in the diameter. When such an irregular portion 15 is formed, when the bolt (not shown) is fastened, the irregular portion 15 cannot be passed unless the bolt is turned very strongly. A part of the female screw 4 may be crushed. As a result, the screwed state of the bolt with respect to the T nut 1 can be locked. Therefore, if the bolt is screwed up to the irregular portion 15, the bolt can be fastened in the locked state. In addition, the recessed part 14 may be single. Other configurations are the same as those of the T-nut 1, and the description thereof is omitted.

以上のように構成されるＴナット１は、中空貫通状に形成された軸部２の第１の端部２ａの開口３が封止部材１１によって封止されるので、固着対象物に打ち込んだ後に、軸部２内に塗料や油、発泡材、異物等が浸入するのを防ぐことができる。また、その開口３を封止部材１１によって封止する前に、軸部２に雌ねじ４を加工すれば、タップを中空貫通状の軸部２に貫通動作させることができるため、軸部２の第１の端部側又は第２の端部側の何れの側からでもねじ切り加工を容易に行うことができ、生産性が著しく向上し、より短時間で雌ねじ４を形成することができる。また、軸部２の先端まで十分な長さの雌ねじ４を形成することができる。   The T-nut 1 configured as described above is driven into a fixed object because the opening 3 of the first end 2a of the shaft portion 2 formed in a hollow through shape is sealed by the sealing member 11. Later, it is possible to prevent the paint, oil, foam material, foreign matter and the like from entering the shaft portion 2. Further, if the internal thread 4 is processed in the shaft portion 2 before the opening 3 is sealed by the sealing member 11, the tap can be caused to penetrate the shaft portion 2 having a hollow through shape. Threading can be easily performed from either the first end side or the second end side, the productivity is remarkably improved, and the internal thread 4 can be formed in a shorter time. In addition, the internal thread 4 having a sufficient length up to the tip of the shaft portion 2 can be formed.

そして、封止部材１１の外表面を、フランジ部６の外表面と面一状とし、かつ、フランジ部６を全体として角形形状とし、その縦幅ｂを横幅ａよりも大に設定していることにより、Ｔナット１の打ち込み工程において、Ｔナット貯留タンクからシューターを介して打ち込み装置にＴナットを供給する際に、図３（ａ）に示すように、シューター２１内でフランジ部６（第１の端部２ａ）を下に向けて安定な姿勢で円滑に供給することができる。また、図示は省略するが、封止部材１１の外表面は、フランジ部６に対して凹状に形成されてもよい。その場合にも、シューター２１内でのＴナット１の搬送過程で、封止部材１１が邪魔にならず安定な姿勢で円滑に供給することができる。また、打ち込み装置の先尖り状に形成したプッシュバーの突出端を封止部材１１の凹状部に嵌合させてフランジ部６に安定な押圧力を作用させて固着対象物に対してＴナット１を安定な姿勢で打ち込むことができる。尚、封止部材１１の外表面は、フランジ部６に対して突出状に形成されてもよい。   The outer surface of the sealing member 11 is flush with the outer surface of the flange portion 6, and the flange portion 6 has a square shape as a whole, and the vertical width b is set to be larger than the horizontal width a. Thus, when the T nut is supplied from the T nut storage tank to the driving device via the shooter in the T nut 1 driving step, as shown in FIG. 1 can be smoothly supplied in a stable posture with the end 2a) facing downward. Although not shown, the outer surface of the sealing member 11 may be formed in a concave shape with respect to the flange portion 6. Even in that case, the sealing member 11 can be smoothly supplied in a stable posture without being obstructed in the process of transporting the T-nut 1 in the shooter 21. Further, the projecting end of the push bar formed in the pointed shape of the driving device is fitted into the concave portion of the sealing member 11 and a stable pressing force is applied to the flange portion 6 so that the T-nut 1 is attached to the object to be fixed. Can be driven in a stable posture. Note that the outer surface of the sealing member 11 may be formed to protrude from the flange portion 6.

以上のような封止部材１１は、型成形により容易に形成することができ安価に得られるだけでなく、圧入等により開口３を容易に封止することができ、かつその材質の選択等によって搬送中や取扱い時に脱落しないように適度の強度や耐久性を具備させることもできる。そして、耐熱性の素材を選択すれば、Ｔナット１を取り付けた固着対象物の上に発泡材を加熱成形する場合にも、封止状態を安定に保持することができる。かかる封止部材１１によって軸部２の開口３が封止された状態では、Ｔナット１は個々に単体として独立した状態で取扱うことができるため、多数のＴナット１をまとめてコンパクトに梱包することができ、梱包費及び輸送費を大幅に低減することもできる。尚、上述のように、封止部材１１によって、軸部２の第１の端部２ａの開口３が封止されるＴナット１では、フランジ部６の形状や爪７の数は、例えば図３（ｂ）〜（ｅ）に示すように、適宜に選択されてよく、図３（ｂ）では４本の爪７を、図３（ｃ）では、３本の爪７を、図３（ｄ）では、６本の爪７を、それぞれフランジ部６の外周縁を切り起こして等間隔に形成している。また、爪７の数は１本でもよく、その爪７の形状は、ギザギザ状や鋸歯状、波形状等、適宜に選択されてよい。また、図３（ｅ）では、略長楕円状に形成されたフランジ部６の長辺側の外周縁に一対の突起７１，７１を塑性変形によってフック状に立ち上げて形成している。   The sealing member 11 as described above can be easily formed by molding and can be obtained at a low cost, and the opening 3 can be easily sealed by press-fitting or the like, and by selecting the material thereof Appropriate strength and durability can be provided so as not to drop off during transportation or handling. If a heat-resistant material is selected, the sealing state can be stably maintained even when the foam material is heat-molded on the object to which the T-nut 1 is attached. In a state in which the opening 3 of the shaft portion 2 is sealed by the sealing member 11, the T nuts 1 can be handled individually as a single unit, and thus a large number of T nuts 1 are packed together in a compact manner. And packing and transportation costs can be greatly reduced. As described above, in the T-nut 1 in which the opening 3 of the first end portion 2a of the shaft portion 2 is sealed by the sealing member 11, the shape of the flange portion 6 and the number of claws 7 are, for example, 3 (b) to (e) may be appropriately selected. In FIG. 3 (b), the four claws 7 are shown, in FIG. 3 (c), the three claws 7 are shown in FIG. In d), the six claws 7 are formed at equal intervals by cutting and raising the outer peripheral edge of the flange portion 6. Further, the number of the claws 7 may be one, and the shape of the claws 7 may be appropriately selected such as a jagged shape, a sawtooth shape, and a wave shape. In FIG. 3 (e), a pair of protrusions 71, 71 are formed in a hook shape by plastic deformation on the outer peripheral edge on the long side of the flange portion 6 formed in a substantially oval shape.

図４は、図１（ａ）（ｃ）（ｄ）に示すＴナット１の使用状態の説明図で、図示のように、軸部２の第１の端部２ａの開口３が封止部材１１によって封止された状態のＴナット１が、Ｔナット打ち込み装置等によって、木材等の固着対象物９に形成された下孔に挿入されて、かしめ予定部５が外方に向けてかしめられてかしめ部分５ａが固着対象物９の他側面９ｂに食い込むと同時に、爪７が固着対象物９の一側面９ａに食い込んだ状態で固着される。このようにしてＴナット１が固着対象物９に固定された後、固着対象物９の表面処理のために、その一側面９ａが油や塗料中に浸漬されても、封止部材１１によって、軸部２内に油や塗料が浸入するのを防ぐことができる。これにより、油や塗料が雌ねじ４に付着することがなく、後工程で、ボルト（図示省略）を雌ねじ４に健全に締結することができる。尚、図１（ｂ）（ｃ）に示すＴナット１も同様に使用できるのは言うまでもない。   FIG. 4 is an explanatory diagram of the use state of the T-nut 1 shown in FIGS. 1A, 1C, and 1D. As shown, the opening 3 of the first end 2a of the shaft portion 2 is a sealing member. The T-nut 1 sealed by 11 is inserted into a prepared hole formed in an object 9 to be fixed such as wood by a T-nut driving device or the like, and the caulking scheduled portion 5 is caulked outward. At the same time that the caulking portion 5a bites into the other side surface 9b of the fixing object 9, the claw 7 is fixed in a state of biting into the one side surface 9a of the fixing object 9. After the T-nut 1 is fixed to the fixing object 9 in this way, even if the one side surface 9a is immersed in oil or paint for the surface treatment of the fixing object 9, the sealing member 11 Oil or paint can be prevented from entering the shaft portion 2. Thereby, oil and a coating material do not adhere to the internal thread 4, and a bolt (illustration omitted) can be soundly fastened to the internal thread 4 by a post process. Needless to say, the T-nut 1 shown in FIGS. 1B and 1C can also be used.

図５は、事務椅子２５の着座部２６に対して、図１（ａ）（ｃ）（ｄ）に示すＴナット１を上方から打ち込む場合を示し、この例では、着座部２６におけるシートクッション２７は、シートフレーム２８の上に、合成ゴム、ウレタンゴム、ポリエチレン等の樹脂系発泡素材を載せて直接発泡成形することによって形成される。このようなタイプの事務椅子２５では、発泡成形を行う前に、シートフレーム２８に形成された下孔に、軸部２の第１の端部２ａが封止部材１１によって封止された状態のＴナット１を上方から挿入して、かしめ予定部５を外方に向けてかしめてかしめ部分５ａをシートフレーム２８の下部に食い込ませると同時に、爪７がシートフレーム２８の上部に食い込んだ状態で固着される。このように、Ｔナット１をシートフレーム２８に固定した後で、発泡成形が行われる。その際に、上述のように、耐熱性の封止部材１１によって軸部２の第１の端部２ａが封止されているため、軸部２内に樹脂系発泡素材が浸入するのを防ぐことができる。尚、図１（ｂ）（ｃ）に示すＴナット１もこのような事務椅子２５に同様に使用できるのは言うまでもない。   FIG. 5 shows a case where the T-nut 1 shown in FIGS. 1A, 1C, and 1D is driven into the seating portion 26 of the office chair 25 from above. In this example, the seat cushion 27 in the seating portion 26 is shown. Is formed by placing a resin-based foam material such as synthetic rubber, urethane rubber, polyethylene or the like on the seat frame 28 and directly performing foam molding. In the office chair 25 of this type, the first end 2a of the shaft portion 2 is sealed by the sealing member 11 in the prepared hole formed in the seat frame 28 before foam molding. With the T-nut 1 inserted from above, the caulking portion 5a is squeezed into the lower part of the seat frame 28 with the planned caulking part 5 facing outward, and at the same time the claws 7 are sunk into the upper part of the seat frame 28. It is fixed. In this way, after the T-nut 1 is fixed to the seat frame 28, foam molding is performed. At that time, since the first end 2a of the shaft portion 2 is sealed by the heat-resistant sealing member 11 as described above, the resin-based foam material is prevented from entering the shaft portion 2. be able to. Needless to say, the T-nut 1 shown in FIGS. 1B and 1C can be used in the office chair 25 in the same manner.

（実施の形態２）
図６（ａ）はＴナット１の断面図、（ｂ）は別のＴナット１の断面図、（ｃ）は共通の底面図、（ｄ）は（ａ）（ｃ）に示すＴナット１の斜視図である。これらのＴナット１も、軸部２の第１の端部２ａの開口３は、封止部材１１によって封止されており、封止部材１１の外表面は、フランジ部６の外表面と面一状とされるが、軸部２の長さがやや短くなっており軸部２にかしめ予定部を設けていないことと、軸部２の雌ねじ形成部４ａの第２の端部２ｂが内側に絞り込まれて絞り部分ｃが形成されている点が、前実施の形態のＴナット１と異なる。このように軸部２の略全長にわたって雌ねじ形成部４ａが形成されているＴナット１では、その製造工程で、段階的なプレス工程を経ると、軸部２の雌ねじ形成部４ａの第２の端部２ｂが若干拡径気味になるため、プレス工程終了後に、第２の端部２ｂに絞り加工を施して絞り部分ｃを形成し、ボルトを緊密に締結できるようにしている。その他の構成については、前実施の形態のＴナット１と同じであり、その説明を省略する。このＴナット１においても、図６（ｂ）に示すように、雌ねじ形成部４ａの外周下部における軸部２の径方向に対向する２箇所に、図１（ｂ）と同様の凹部１４，１４を形成し、その雌ねじ４の対応箇所に不整化部分１５を形成することで、ボルトをロック状態に締結することができる。 (Embodiment 2)
6A is a sectional view of a T-nut 1, FIG. 6B is a sectional view of another T-nut 1, FIG. 6C is a common bottom view, and FIG. 6D is a T-nut 1 shown in FIGS. FIG. In these T-nuts 1, the opening 3 of the first end 2 a of the shaft portion 2 is sealed by the sealing member 11, and the outer surface of the sealing member 11 faces the outer surface of the flange portion 6. Although the length of the shaft portion 2 is slightly shortened and a portion to be caulked is not provided on the shaft portion 2, the second end portion 2b of the female screw forming portion 4a of the shaft portion 2 is on the inner side. It is different from the T-nut 1 of the previous embodiment in that the narrowed portion c is formed. Thus, in the T nut 1 in which the female thread forming portion 4a is formed over substantially the entire length of the shaft portion 2, when a stepwise pressing process is performed in the manufacturing process, the second nut of the female thread forming portion 4a of the shaft portion 2 is obtained. Since the end portion 2b has a slightly enlarged diameter, the second end portion 2b is subjected to a drawing process after the press process to form a drawn portion c so that the bolt can be tightened tightly. About another structure, it is the same as the T nut 1 of previous embodiment, The description is abbreviate | omitted. Also in the T nut 1, as shown in FIG. 6 (b), the same concave portions 14 and 14 as in FIG. 1 (b) are provided at two locations facing the radial direction of the shaft portion 2 in the lower part of the outer periphery of the female screw forming portion 4a. , And forming the irregular portion 15 at the corresponding portion of the female screw 4 makes it possible to fasten the bolt in a locked state.

図７は、図６（ａ）〜（ｄ）に示すようなＴナット１を打ち込んだ中間部材３１に、ボルト３２を用いて別の板部材３３，３４を重ね合わせて固定する場合を示し、重ね合わせる板部材３３，３４が多少硬い素材であっても、上述のように、封止部材１１の外表面をフランジ部６の外表面と面一状に形成しているため、フランジ部６の厚み分だけの隙間を残して両方の板部材３３，３４を、中間部材３１に対してほぼ密接させた状態で安定に固定することができる。尚、本実施の形態のＴナット１においても、軸部２やフランジ部６、爪７等の形状は、種々の形式のものが採用されてよく、例えば、フランジ部６の縦幅ｂを横幅ａよりも小に設定してもよく、縦幅ｂと横幅ａを等しく設定してもよい。また、爪７に代えて、フランジ部６の周縁の一部を塑性変形させてフック状に立ち上げて突起を形成してもよい。   FIG. 7 shows a case where another plate member 33, 34 is overlapped and fixed to the intermediate member 31 driven with the T-nut 1 as shown in FIGS. 6 (a) to 6 (d) by using a bolt 32, Even if the plate members 33 and 34 to be overlapped are made of a somewhat hard material, the outer surface of the sealing member 11 is formed flush with the outer surface of the flange portion 6 as described above. Both plate members 33 and 34 can be stably fixed in a state of being in close contact with the intermediate member 31 while leaving a gap corresponding to the thickness. In the T-nut 1 of the present embodiment, various shapes may be adopted for the shape of the shaft portion 2, the flange portion 6, the claw 7, etc. For example, the vertical width b of the flange portion 6 is set to the horizontal width. It may be set smaller than a, and the vertical width b and the horizontal width a may be set equal. Further, instead of the claw 7, a part of the periphery of the flange portion 6 may be plastically deformed and raised in a hook shape to form a projection.

（実施の形態３）
図８（ａ）はＴナット１の断面図、（ｂ）は別のＴナット１の断面図、（ｃ）は共通の底面図である。この例では、前実施の形態と同様に、軸部２の第１の端部２ａの開口３は、封止部材１１によって封止されており、封止部材１１の外表面は、フランジ部６の外表面と面一状とされる。前実施の形態と相違する点は、軸部２がやや長く形成され、軸部２の第２の端部２ｂの側にかしめ予定部５が形成されると共に、軸部２のフランジ部６寄りの部分に、ステップバレル部（段差部）１２が形成されており、軸部２における雌ねじ形成部４ａの基端と封止部材１１の間に隙間Sが形成されている点である。そのステップバレル部１２は、雌ねじ形成部４ａよりも大きな内径と、雌ねじ形成部４ａよりも大きな外径を有している。また、このＴナット１においても、図８（ｂ）に示すように、雌ねじ形成部４ａの外周下部に、軸部２の径方向に対向する２つの位置に、図１（ｂ）及び図６（ｂ）と同様の凹部１４，１４を形成し、その雌ねじ４の対応箇所に不整化部分１５を形成することで、ボルトをロック状態に締結することができる。その他の構成については、前実施の形態のＴナット１と略同等であり、同等部材については同一符号を付し、その説明を省略する。 (Embodiment 3)
8A is a cross-sectional view of a T-nut 1, FIG. 8B is a cross-sectional view of another T-nut 1, and FIG. 8C is a common bottom view. In this example, as in the previous embodiment, the opening 3 of the first end 2a of the shaft portion 2 is sealed by the sealing member 11, and the outer surface of the sealing member 11 is the flange portion 6. It is flush with the outer surface. The difference from the previous embodiment is that the shaft portion 2 is formed to be slightly longer, the caulking planned portion 5 is formed on the second end portion 2b side of the shaft portion 2, and the flange portion 6 of the shaft portion 2 is closer to the flange portion 6 In this portion, a step barrel portion (stepped portion) 12 is formed, and a gap S is formed between the proximal end of the female screw forming portion 4 a in the shaft portion 2 and the sealing member 11. The step barrel portion 12 has an inner diameter larger than that of the female screw forming portion 4a and an outer diameter larger than that of the female screw forming portion 4a. Also in the T-nut 1, as shown in FIG. 8B, at the two positions facing the radial direction of the shaft portion 2 in the lower part of the outer periphery of the female screw forming portion 4a, FIG. By forming the concave portions 14 and 14 similar to (b) and forming the irregular portion 15 at the corresponding portion of the female screw 4, the bolt can be fastened in the locked state. About another structure, it is substantially equivalent to the T nut 1 of previous embodiment, the same code | symbol is attached | subjected about an equivalent member, and the description is abbreviate | omitted.

封止部材１１は、前実施の形態のものとは若干異なり、例えば図９（ａ）〜（ｃ）に示すように、軸部２の第１の端部２ａの開口３を封止する円板状の蓋部１１ａと、軸部２の隙間Sが形成されている隙間形成部分の内周面に密嵌状態に係合する係合部１１ｂと、を備え、係合部１１ｂは、外周縁が二重の周突状に形成された円形状をなし蓋部１１ａの内側に同心円状に設けられ、蓋部１１ａが開口３を封止する方向に加圧されることにより、軸部２の隙間形成部分の内周面の一部に弾性的に密嵌係合し（図８（ａ）（ｂ）参照）、前実施の形態と同様に、安定な封止状態が保持される。尚、軸部２の隙間形成部分には、封止部材１１の係合部１１ｂをより確実に係合させておくための二重の周溝（図示省略）を形成しておくのが好ましい。また、係合部１１ｂの周突状部は、三重に形成されてもよく一重であってもよく、何れの場合にも、対応する数の周溝を軸部２の隙間形成部分に形成しておくことが好ましい。   The sealing member 11 is slightly different from that of the previous embodiment. For example, as shown in FIGS. 9A to 9C, the sealing member 11 is a circle that seals the opening 3 of the first end 2 a of the shaft portion 2. A plate-like lid portion 11a, and an engaging portion 11b that engages with the inner peripheral surface of the gap forming portion in which the gap S of the shaft portion 2 is formed. By forming a circular shape with a peripheral edge formed in a double circumferential shape, and concentrically provided inside the lid portion 11a, the lid portion 11a is pressurized in a direction to seal the opening 3, whereby the shaft portion 2 The gap forming portion is elastically tightly engaged with a part of the inner peripheral surface (see FIGS. 8A and 8B), and a stable sealed state is maintained as in the previous embodiment. In addition, it is preferable to form a double circumferential groove (not shown) in the gap forming portion of the shaft portion 2 so that the engaging portion 11b of the sealing member 11 is more reliably engaged. Further, the circumferential protruding portion of the engaging portion 11b may be formed in a triple or single manner, and in any case, a corresponding number of circumferential grooves are formed in the gap forming portion of the shaft portion 2. It is preferable to keep it.

このようなＴナット１は、例えば図１０に示すような状態で使用される。即ち、前実施の形態と同様に、軸部２の第１の端部２ａの開口が封止部材１１によって封止された状態のＴナット１が、Ｔナット打ち込み装置等によって、木材等の固着対象物９に形成された下孔に挿入されて、かしめ予定部５が外方に向けてかしめられてかしめ部分５ａが固着対象物９の他側面９ｂに食い込むと同時に、爪７が固着対象物９の一側面９ａに食い込んだ状態で固着される。このようにしてＴナット１が固着対象物９に固定された後、固着対象物９の表面処理のために、その一側面９ａが油や塗料中に浸漬されても、封止部材１１によって、軸部２内に油や塗料が浸入するのを防ぐことができる。これにより、油や塗料が雌ねじ４に付着することがなく、後工程で、ボルト（図示省略）を雌ねじ４に健全に締結することができる。尚、このようなＴナット１は、前実施の形態と同様に、事務椅子の着座部に打ち込むこともできる（図５参照）。この例のＴナット１は、前実施の形態のＴナット１よりも軸部２が長いため、取付対象となる固著対象物９の厚みが大である場合等に好適に使用することができる。   Such a T-nut 1 is used in a state as shown in FIG. 10, for example. That is, as in the previous embodiment, the T-nut 1 in a state where the opening of the first end 2a of the shaft portion 2 is sealed by the sealing member 11 is fixed to wood or the like by a T-nut driving device or the like. The nail | claw 7 inserts in the pilot hole formed in the target object 9, and the to-be-caulked part 5 is squeezed outward and the crimping | crimped part 5a bites into the other side surface 9b of the fixed object 9, and the nail | claw 7 is fixed object. 9 is fixed in a state of being bitten into one side surface 9a. After the T-nut 1 is fixed to the fixing object 9 in this way, even if the one side surface 9a is immersed in oil or paint for the surface treatment of the fixing object 9, the sealing member 11 Oil or paint can be prevented from entering the shaft portion 2. Thereby, oil and a coating material do not adhere to the internal thread 4, and a bolt (illustration omitted) can be soundly fastened to the internal thread 4 by a post process. Such a T-nut 1 can also be driven into the seating portion of the office chair as in the previous embodiment (see FIG. 5). The T nut 1 of this example has a longer shaft portion 2 than the T nut 1 of the previous embodiment, and therefore can be suitably used when the thickness of the solid object 9 to be attached is large. .

（実施の形態４）
図１１（ａ）はＴナット１の断面図、（ｂ）は別のＴナット１の断面図、（ｃ）は共通の底面図、（ｄ）は（ａ）（ｃ）に示すＴナット１の斜視図である。これらのＴナット１も、軸部２の第１の端部２ａの開口は、封止部材１１によって封止されており、封止部材１１の外表面は、フランジ部６の外表面と面一状とされるが、軸部２の長さがやや短くなってかしめ予定部が設けられていないことと、軸部２の雌ねじ形成部４ａの第２の端部２ｂが内側に絞り込まれて絞り部分ｃが形成されている点が、前実施の形態のＴナット１と異なる。その絞り部分ｃの構成や作用効果については、図６（ａ）（ｂ）（ｄ）に示すＴナット１の場合と同様であり、その説明を省略する。その他の構成についても、前実施の形態のＴナット１等と同じであり、その説明を省略する。また、このＴナット１においても、図１１（ｂ）に示すように、雌ねじ形成部４ａの外周下部に、軸部２の径方向に対向する２つの位置に、前実施の形態と同様の凹部１４，１４を形成し、その雌ねじ４の対応箇所に不整化部分１５を形成することで、ボルトをロック状態に締結することができる。 (Embodiment 4)
11A is a sectional view of a T-nut 1, FIG. 11B is a sectional view of another T-nut 1, FIG. 11C is a common bottom view, and FIG. 11D is a T-nut 1 shown in FIGS. FIG. Also in these T nuts 1, the opening of the first end 2 a of the shaft portion 2 is sealed by the sealing member 11, and the outer surface of the sealing member 11 is flush with the outer surface of the flange portion 6. However, the length of the shaft portion 2 is slightly shortened and no portion to be caulked is provided, and the second end portion 2b of the female screw forming portion 4a of the shaft portion 2 is narrowed to the inside. The point c is different from the T-nut 1 of the previous embodiment. The configuration and operational effects of the throttle portion c are the same as those of the T-nut 1 shown in FIGS. 6A, 6B, and 6D, and the description thereof is omitted. Other configurations are the same as those of the T-nut 1 etc. of the previous embodiment, and the description thereof is omitted. Also in the T-nut 1, as shown in FIG. 11 (b), in the lower part of the outer periphery of the female thread forming portion 4a, the concave portions similar to the previous embodiment are provided at two positions opposed to the radial direction of the shaft portion 2. 14 and 14 are formed, and the irregular portion 15 is formed at the corresponding portion of the female screw 4, whereby the bolt can be fastened in the locked state.

（実施の形態５）
図１２（ａ）はＴナット１の部分破断縦断面図、（ｂ）は平面図である。このＴナット１では、円形のフランジ部６に平行な２本の切れ目を入れた部分を突き上げて突起７２を形成しており、このような突起７２によっても回り止めの機能を発揮させることができる。この例では、突起７２をフランジ部６の４ヵ所に均等な間隔をおいて設けているが、突起７２の数や配置位置は、必要に応じて適宜変更可能であるのは言うまでもない。尚、本実施の形態のＴナット１においても、軸部２やフランジ部６、突起７２等は、種々の形状、形式のものが採用されてよく、例えば、フランジ部６を楕円形状等の非円形形状としてもよく、角形形状としてもよい。また、前各実施の形態と同様に、雌ねじ形成部４ａの外周下部における軸部２の径方向に対向する２つの位置に凹部１４，１４を形成し、その雌ねじ４の対応箇所に不整化部分１５を形成することで、ボルトをロック状態に締結することができるのは言うまでもない。 (Embodiment 5)
12A is a partially broken longitudinal sectional view of the T-nut 1, and FIG. 12B is a plan view. In this T-nut 1, a protrusion 72 is formed by pushing up a portion having two cuts parallel to the circular flange portion 6, and the function of a detent can also be exhibited by such a protrusion 72. . In this example, the protrusions 72 are provided at four positions on the flange portion 6 at equal intervals, but it goes without saying that the number and arrangement positions of the protrusions 72 can be changed as needed. Also in the T-nut 1 of the present embodiment, the shaft portion 2, the flange portion 6, the protrusion 72, and the like may have various shapes and types. For example, the flange portion 6 may have a non-elliptical shape such as an oval shape. It may be a circular shape or a square shape. Similarly to the previous embodiments, the concave portions 14 and 14 are formed at two positions facing the radial direction of the shaft portion 2 in the lower part of the outer periphery of the female screw forming portion 4a, and the irregular portion is formed at the corresponding portion of the female screw 4. Needless to say, the bolt 15 can be fastened in the locked state by forming the pin 15.

本発明のＴナット１は、前記各実施の形態に限定されることなく、発明の要旨を逸脱しない限りにおいて各部の改良や変更等は自由であり、また、各実施の形態間での構成の組み合わせも自由である。   The T-nut 1 of the present invention is not limited to the above-described embodiments, and each part can be freely improved or changed without departing from the gist of the invention, and the configuration between the embodiments is not limited. Combination is also free.

本発明のＴナットは、軸部内に塗料や油、発泡材、異物等が浸入することがなく、軸部の先端まで雌ねじを形成することができる上に、コンパクトに梱包することができ、安価に提供できるので、各種用途のＴナットに好適に適用することができる。   The T-nut of the present invention does not allow paint, oil, foam, foreign matter, etc. to enter the shaft, and can form a female screw up to the tip of the shaft, and can be packed compactly and inexpensively. Therefore, it can be suitably applied to T-nuts for various uses.

（ａ）は本発明の実施の形態１に係るＴナットの縦断面図、（ｂ）は別のＴナットの縦断面図、（ｃ）は底面図である。(A) is a longitudinal cross-sectional view of the T nut according to Embodiment 1 of the present invention, (b) is a longitudinal cross-sectional view of another T nut, and (c) is a bottom view. （ａ）は同Ｔナットの封止部材の側面図、（ｂ）は断面図、（ｃ）は斜視図である。(A) is a side view of the sealing member of the T-nut, (b) is a sectional view, and (c) is a perspective view. （ａ）は同Ｔナットの供給状態の説明図、（ｂ）は爪が４本あるＴナットの底面図と側面図、（ｃ）は爪が３本あるＴナットの底面図と側面図、（ｄ）は爪が６本あるＴナットの底面図と側面図、（ｅ）は突起が２本あるＴナットの底面図と側面図である。(A) is an explanatory view of the supply state of the T nut, (b) is a bottom view and a side view of a T nut with four claws, (c) is a bottom view and a side view of a T nut with three claws, (D) is a bottom view and a side view of a T-nut having six claws, and (e) is a bottom view and a side view of a T-nut having two protrusions. は同Ｔナットを板材に固定した使用状態の断面図である。These are sectional drawings of the use condition which fixed the T nut to the board | plate material. は同Ｔナットを事務椅子に固定した使用状態の断面図である。These are sectional drawings of the use condition which fixed the T nut to the office chair. （ａ）は本発明の実施の形態２に係るＴナットの縦断面図、（ｂ）は別のＴナットの縦断面図、（ｃ）は底面図、（ｄ）は斜視図である。(A) is a longitudinal cross-sectional view of a T-nut according to Embodiment 2 of the present invention, (b) is a longitudinal cross-sectional view of another T-nut, (c) is a bottom view, and (d) is a perspective view. （ａ）は同Ｔナットを板材に固定した使用状態の断面図である。(A) is sectional drawing of the use condition which fixed the T nut to the board | plate material. （ａ）は本発明の実施の形態３に係るＴナットの縦断面図、（ｂ）は別のＴナットの縦断面図、（ｃ）は底面図である。(A) is a longitudinal cross-sectional view of the T-nut which concerns on Embodiment 3 of this invention, (b) is a longitudinal cross-sectional view of another T-nut, (c) is a bottom view. （ａ）は同Ｔナットの封止部材の側面図、（ｂ）は断面図、（ｃ）は斜視図である。(A) is a side view of the sealing member of the T-nut, (b) is a sectional view, and (c) is a perspective view. は同Ｔナットを板材に固定した使用状態の断面図である。These are sectional drawings of the use condition which fixed the T nut to the board | plate material. （ａ）は本発明の実施の形態４に係るＴナットの縦断面図、（ｂ）は別のＴナットの縦断面図、（ｃ）は底面図、（ｄ）は斜視図である。(A) is a longitudinal cross-sectional view of a T-nut according to Embodiment 4 of the present invention, (b) is a vertical cross-sectional view of another T-nut, (c) is a bottom view, and (d) is a perspective view. は本発明の実施の形態５に係るＴナットの一部破断縦断面図、（ｂ）は平面図である。These are the partially broken longitudinal cross-sectional views of the T nut concerning Embodiment 5 of this invention, (b) is a top view. は従来のＴナットの一例を示し、（ａ）は縦断面図、（ｂ）は搬送中のＴナットの斜視図、（ｃ）は板材に固定した使用状態の断面図である。1 shows an example of a conventional T-nut, (a) is a longitudinal sectional view, (b) is a perspective view of the T-nut being conveyed, and (c) is a sectional view of a usage state fixed to a plate. は従来のＴナット（テープドＴナット）の斜視図である。FIG. 3 is a perspective view of a conventional T-nut (taped T-nut).

符号の説明Explanation of symbols

１ Ｔナット
２ 軸部
２ａ 第１の端部
２ｂ 第２の端部
３ 開口
４ 雌ねじ
４ａ 雌ねじ形成部
５ かしめ予定部
５ａ かしめ部分
６ フランジ部
７ 爪
７１，７２ 突起
９ 固着対象物
９ａ 一側面
９ｂ 他側面
１１ 封止部材
１１ａ 蓋部
１１ｂ 係合部
１２ ステップバレル部（段差部）
１３ 基端側拡大筒状部
１４ 凹部
１５ 不整化部分
２１ シューター
２２ 下孔
２５ 事務椅子
２６ 着座部
２７ シートクッション
２８ シートフレーム
２９ 粘着テープ
３１ 中間部材
３２ ボルト
３３，３４ 板部材
Ｓ 隙間
ａ 横幅
ｂ 縦幅
ｃ 絞り部分 DESCRIPTION OF SYMBOLS 1 T nut 2 Shaft part 2a 1st edge part 2b 2nd edge part 3 Opening 4 Female thread 4a Female thread formation part 5 Clamping part 5a Clamping part 6 Flange part 7 Claw 71,72 Protrusion 9 Sticking object 9a One side surface 9b Other side face 11 Sealing member 11a Lid part 11b Engagement part 12 Step barrel part (step part)
13 Base end side enlarged cylindrical portion 14 Recessed portion 15 Uneven portion 21 Shooter 22 Lower hole 25 Office chair 26 Seating portion 27 Seat cushion 28 Seat frame 29 Adhesive tape 31 Intermediate member 32 Bolt 33, 34 Plate member S Gap a Horizontal width b Vertical Width c Aperture part

Claims (8)

金属材料からなる、筒状の軸部と、該軸部の第１の端部に外方に向けて張り出し形成されるフランジ部と、を備え、軸部の内周面には雌ねじが形成され、フランジ部には、軸部の第１の端部から第２の端部に向けた爪又は突起が形成されてなるＴナットであって、
前記軸部は、中空貫通状に形成され、かつ、該軸部の第１の端部の開口は、封止部材によって封止され、該封止部材は、合成樹脂材、ゴム材又は前記軸部を形成する金属材料とは別体の金属材料からなることを特徴とするＴナット。 A cylindrical shaft portion made of a metal material, and a flange portion that projects outward from the first end portion of the shaft portion, and an internal thread is formed on the inner peripheral surface of the shaft portion The flange portion is a T-nut formed with a claw or protrusion formed from the first end portion of the shaft portion toward the second end portion,
The shaft portion is formed in a hollow penetrating shape, and the opening of the first end portion of the shaft portion is sealed by a sealing member, and the sealing member is made of a synthetic resin material, a rubber material, or the shaft. A T-nut comprising a metal material separate from the metal material forming the portion. 前記第１の端部から第２の端部に向けた爪が、前記フランジ部の外周部に２対形成され、該２対の爪は、前記フランジ部の径方向に対向するように配置され、前記フランジ部が全体として角形形状をなす請求項１に記載のＴナット。 Two pairs of claws directed from the first end portion toward the second end portion are formed on the outer peripheral portion of the flange portion, and the two pairs of claws are disposed so as to face each other in the radial direction of the flange portion. The T nut according to claim 1, wherein the flange portion has a square shape as a whole. 前記軸部の第１の端部の開口を封止する封止部材の外表面は、フランジ部の外表面に対して、面一状又は凹状に形成される請求項１又は２に記載のＴナット。 3. The T according to claim 1, wherein the outer surface of the sealing member that seals the opening of the first end portion of the shaft portion is formed to be flush or concave with respect to the outer surface of the flange portion. nut. 前記封止部材は、前記軸部の第１の端部の開口を封止する蓋部と、前記軸部の内周面又は雌ねじの一部に係合する係合部と、を備える請求項１乃至３の何れか１項に記載のＴナット。 The said sealing member is provided with the cover part which seals opening of the 1st edge part of the said axial part, and the engaging part engaged with a part of internal peripheral surface of the said axial part, or an internal thread. The T-nut according to any one of 1 to 3. 前記軸部には、第２の端部から所定の長さにわたって、固着対象物に対してかしめ固定されるかしめ予定部が形成される請求項１乃至４の何れか１項に記載のＴナット。 The T-nut according to any one of claims 1 to 4, wherein the shaft portion is formed with a predetermined caulking portion that is caulked and fixed to an object to be fixed over a predetermined length from the second end portion. . 前記軸部における、第２の端部と、前記雌ねじが形成される雌ねじ形成部と、の間には、前記雌ねじ形成部よりも大きな内径と、前記雌ねじ形成部よりも大きな外径を有するステップバレル部が形成される請求項１乃至５の何れか１項に記載のＴナット。 A step having a larger inner diameter than the female screw forming portion and a larger outer diameter than the female screw forming portion between the second end portion of the shaft portion and the female screw forming portion where the female screw is formed. The T-nut according to any one of claims 1 to 5, wherein a barrel portion is formed. 前記爪又は突起は、前記フランジ部の外周縁に、ギザギザ状又はフック状に形成される請求項１乃至６の何れか１項に記載のＴナット。 The T-nut according to any one of claims 1 to 6, wherein the claw or the protrusion is formed in a jagged shape or a hook shape on an outer peripheral edge of the flange portion. 前記雌ねじ形成部の外周面の一部には、前記雌ねじの一部を不整化した不整化部分を形成するための凹部が形成される請求項１乃至７の何れか１項に記載のＴナット。 The T nut according to any one of claims 1 to 7, wherein a concave portion for forming an irregular portion in which a portion of the female screw is irregular is formed on a part of the outer peripheral surface of the female screw forming portion. .
JP2008271926A 2008-10-22 2008-10-22 T-nut Pending JP2010101372A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4820927B1 (en) * 2011-05-12 2011-11-24 永山電子工業株式会社 T nut
JP5143305B1 (en) * 2012-07-11 2013-02-13 永山電子工業株式会社 Tapered T nut
CN114433780A (en) * 2020-11-02 2022-05-06 株式会社Tps创作 Surface mount nut, method and apparatus for manufacturing the same, and method for manufacturing bottomed cylindrical body

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6323015A (en) * 1986-07-14 1988-01-30 トヨタ自動車株式会社 Weld nut
JPH01121707U (en) * 1988-02-12 1989-08-17
JPH0728217U (en) * 1993-11-01 1995-05-23 株式会社ニフコ Hole closing cap
JP2005003008A (en) * 2003-06-09 2005-01-06 Nagayama Denshi Kogyo Kk Cb hopper feed t-nut
JP2006064022A (en) * 2004-08-25 2006-03-09 Maruyama Mfg Co Ltd Clip for locking
JP2006183798A (en) * 2004-12-28 2006-07-13 Nagayama Denshi Kogyo Kk T-nut

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6323015A (en) * 1986-07-14 1988-01-30 トヨタ自動車株式会社 Weld nut
JPH01121707U (en) * 1988-02-12 1989-08-17
JPH0728217U (en) * 1993-11-01 1995-05-23 株式会社ニフコ Hole closing cap
JP2005003008A (en) * 2003-06-09 2005-01-06 Nagayama Denshi Kogyo Kk Cb hopper feed t-nut
JP2006064022A (en) * 2004-08-25 2006-03-09 Maruyama Mfg Co Ltd Clip for locking
JP2006183798A (en) * 2004-12-28 2006-07-13 Nagayama Denshi Kogyo Kk T-nut

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4820927B1 (en) * 2011-05-12 2011-11-24 永山電子工業株式会社 T nut
CN102777470A (en) * 2011-05-12 2012-11-14 永山电子工业株式会社 T-nut
US8337130B2 (en) 2011-05-12 2012-12-25 Nagayama Electric Co., Ltd. T-nut
JP5143305B1 (en) * 2012-07-11 2013-02-13 永山電子工業株式会社 Tapered T nut
CN114433780A (en) * 2020-11-02 2022-05-06 株式会社Tps创作 Surface mount nut, method and apparatus for manufacturing the same, and method for manufacturing bottomed cylindrical body

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