JPH0719219A - Screw for building - Google Patents
Screw for buildingInfo
- Publication number
- JPH0719219A JPH0719219A JP18912693A JP18912693A JPH0719219A JP H0719219 A JPH0719219 A JP H0719219A JP 18912693 A JP18912693 A JP 18912693A JP 18912693 A JP18912693 A JP 18912693A JP H0719219 A JPH0719219 A JP H0719219A
- Authority
- JP
- Japan
- Prior art keywords
- cutting material
- screw
- thread
- hard
- soft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Connection Of Plates (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、胴縁等の部材をＡＬＣ
等の躯体に締着するための建築用ネジに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses ALC for members such as furring strips.
The present invention relates to a building screw for fastening to a body such as.
【０００２】[0002]
【従来の技術】従来、図５に示すような建築用ネジが公
知である。2. Description of the Related Art Conventionally, a building screw as shown in FIG. 5 is known.
【０００３】この従来公知の建築用ネジ１は、回転工具
の係合部を備えた頭部２からシャンク３を延設し、シャ
ンク先端の尖鋭部４の近傍から頭部２の近傍に至り螺糸
５を形成している。前記螺糸５の各ピッチ毎に現れるね
じ山は、尖鋭部４に延設された部分を除いて、シャンク
３の軸方向にわたり同径とされている。In this conventionally known construction screw 1, a shank 3 is extended from a head 2 provided with an engaging portion of a rotary tool, and is screwed from the vicinity of the sharp portion 4 at the tip of the shank to the vicinity of the head 2. The thread 5 is formed. The threads appearing at each pitch of the thread 5 have the same diameter in the axial direction of the shank 3, except for the portion extending to the sharpened portion 4.
【０００４】[0004]
【発明が解決しようとする課題】近年、ＡＬＣ等の気泡
コンクリート基材に見られるように、粉材を成形するこ
とにより製作された建材が広く使用されている。このよ
うな建材は、ネジをねじ込むと、素材が崩壊状に切削さ
れるが、構造が脆弱なため所謂ネジの食いつきが良好で
ない。本明細書において、ＡＣＬに代表されるような脆
弱な材質を「軟削材」と称する。In recent years, building materials made by molding powder materials have been widely used, as seen in cellular concrete base materials such as ALC. When a screw is screwed into such a building material, the material is cut into a collapsed shape, but the so-called screw biting is not good because the structure is fragile. In this specification, a fragile material represented by ACL is referred to as a "soft-cutting material".
【０００５】ところで、建築分野に関して軟削材が多用
される現状の下において、胴縁その他の建材をＡＬＣ等
の軟削材に取付ける必要がある。胴縁等の建材は、一般
的には木材から成るが、金属板等が用いられる場合もあ
る。このような木材や金属板は、ネジをねじ込むと、切
込み状に切削され、構造的に保形性が良いため所謂ネジ
の食いつきが良好である。本明細書において、木材に代
表されるような保形性に優れる材質を「硬削材」と称す
る。Under the present circumstances where soft-cutting materials are frequently used in the field of construction, furnishings and other building materials need to be attached to soft-cutting materials such as ALC. The building material such as the furring strip is generally made of wood, but a metal plate or the like may be used in some cases. When such a wood or metal plate is screwed in, the wood or metal plate is cut into a notch shape and structurally has a good shape retention property, so that the so-called screw biting is good. In the present specification, a material having excellent shape retention property represented by wood is referred to as "hard cutting material".
【０００６】そこで、従来、前記胴縁等の硬削材をＡＬ
Ｃ躯体等の軟削材に対して、前記ネジ１を用いて締着す
ることが行われているが、本発明者が知見したところに
よると次のような重大な問題がある。Therefore, conventionally, the hard-cutting material such as the furring strip has been
Although the screw 1 is used to fasten a soft-cutting material such as a C-frame, the present inventor has found the following serious problems.
【０００７】図５に示すように、ネジ１は、硬削材６を
貫通してねじ込んだ後、軟削材７にねじ込まれ、これに
より硬削材６を軟削材７に締着することを目的としてい
る。然しながら、前述したような材質上の性質から、ネ
ジ１を硬削材６にねじ込んだ際に得られるスラストと、
軟削材７にねじ込んだ際に得られるスラストとは、相互
に同一でなく、大幅に異なる。As shown in FIG. 5, the screw 1 is screwed through the hard-cutting material 6 and then screwed into the soft-cutting material 7, whereby the hard-cutting material 6 is fastened to the soft-cutting material 7. It is an object. However, due to the above-mentioned material properties, the thrust obtained when the screw 1 is screwed into the hard-working material 6, and
The thrust obtained when screwed into the soft-cutting material 7 is not the same as each other, but is significantly different.
【０００８】即ち、ネジ１は、硬削材６を進入中は、螺
糸５のピッチに相当した正常なスラストＦを得られる。
換言すれば、ネジ１は、一回転すると、螺糸５の一ピッ
チに相当して前進する。ところが、軟削材７を進入中
は、螺糸５の食いつきが良好でなく、軟削材７との間で
スリップしつつ回転するので、螺糸５のピッチに相当す
るスラストＦよりも小さい不良なスラストｆとされてし
まう。即ち、軟削材７中においては、ネジ１は、一回転
しても螺糸５の一ピッチよりも短い距離しか前進しな
い。That is, the screw 1 can obtain a normal thrust F corresponding to the pitch of the thread 5 while the hard cutting material 6 is being inserted.
In other words, when the screw 1 makes one rotation, the screw 1 advances by one pitch of the thread 5. However, the biting of the screw thread 5 is not good during the entry of the soft-cutting material 7, and the screw thread 5 rotates while slipping with the soft-cutting material 7, which is a defect smaller than the thrust F corresponding to the pitch of the screw thread 5. Thrust f will be made. That is, in the soft-cutting material 7, the screw 1 advances only a distance shorter than one pitch of the thread 5 even if it makes one rotation.
【０００９】上記作用を図５に基づき説明すると、図５
（Ａ）に示すように、ネジ１は、硬削材６を貫通するま
では、正常なスラストＦを生じ、正常に螺進する。とこ
ろが、図５（Ｂ）に示すように、ネジ１が軟削材７に進
入すると、ネジ１のスラストは不良なスラストｆに減
じ、良好に螺進しない。The above operation will be described with reference to FIG.
As shown in (A), the screw 1 produces a normal thrust F until it penetrates the hard-cutting material 6, and normally advances. However, as shown in FIG. 5B, when the screw 1 enters the soft-cutting material 7, the thrust of the screw 1 is reduced to a bad thrust f, and the screw does not advance well.
【００１０】その結果、図５（Ｃ）に示すように、ネジ
１を締着する前に、硬削材６が軟削材７から浮き上がっ
てしまう。即ち、ネジ１は、前述のように硬削材６と軟
削材７との間においてスラストをＦ＜ｆとされ、軟削材
７に対して螺糸５のピッチに応じた前進を行わない。そ
の反面、硬削材６とネジ１との間においては、相互に螺
糸５のピッチに応じた相対移動が行われるため、結局、
硬削材６がネジ１の前進方向と反対方向、従って、浮き
上がる方向に移動せしめられてしまう。As a result, as shown in FIG. 5C, the hard-cutting material 6 is lifted from the soft-cutting material 7 before the screw 1 is fastened. That is, the screw 1 has a thrust F <f between the hard-cutting material 6 and the soft-cutting material 7 as described above, and does not move forward with respect to the soft-cutting material 7 according to the pitch of the thread 5. . On the other hand, between the hard-working material 6 and the screw 1, relative movement is performed in accordance with the pitch of the screw thread 5, so that in the end,
The hard-working material 6 is moved in the direction opposite to the forward direction of the screw 1, that is, in the floating direction.
【００１１】このため、ネジ１により硬削材６を軟削材
７に締着するに際し、硬削材６が浮き上がって締着作業
に支障を来たすことになる。また、硬削材６が浮き上が
るときは、隣接して先に締着を完了したネジ１が引き抜
き方向の力を受け、脆弱な軟削材６中における螺糸の螺
合部分を崩壊せしめ、所謂バカねじ状態を招来する虞れ
がある。Therefore, when the hard-cutting material 6 is fastened to the soft-cutting material 7 with the screw 1, the hard-cutting material 6 is lifted up, and the fastening work is hindered. Further, when the hard-cutting material 6 floats up, the screw 1 that has been fastened adjacently to the hard-cutting material 6 receives a force in the pulling-out direction to collapse the threaded portion of the thread in the fragile soft-cutting material 6, so-called. There is a risk that it may cause a stupid screw state.
【００１２】[0012]
【課題を解決するための手段】本発明は、上記課題を解
決した建築用ネジを提供するものであり、その第一の手
段として構成したところは、回転工具の係合部を備えた
頭部からシャンクを延設し、シャンク先端の尖鋭部近傍
から頭部近傍に至り螺糸を形成して成り、硬削材を貫通
してねじ込んだ後、軟削材にねじ込むことにより、前記
硬削材を軟削材に締着するための建築用ネジにおいて、
前記シャンクの軟削材にねじ込まれる領域に形成された
螺糸の複数ピッチにわたるねじ山径Ｄ１に対して、硬削
材にねじ込まれる領域に形成された螺糸の複数ピッチに
わたるねじ山径Ｄ２を、Ｄ２＜Ｄ１に形成して成る点に
ある。DISCLOSURE OF THE INVENTION The present invention provides a building screw which solves the above-mentioned problems, and the first means is to provide a head having an engaging portion for a rotary tool. The shank is extended from the tip of the shank to the vicinity of the head to form a screw thread, which is screwed through the hard-cutting material and then screwed into the soft-cutting material. In the building screws for fastening the to the soft-cutting material,
For the thread diameter D1 over a plurality of pitches of the thread formed in the region of the shank to be screwed into the soft-cutting material, the thread diameter D2 over a plurality of pitches of the thread formed in the region of the shank to be screwed into the hard-cutting material is set. , D2 <D1.
【００１３】また、本発明が第二の手段として構成した
ところは、前記シャンクの硬削材にねじ込まれる領域に
形成された螺糸の複数ピッチにわたるねじ山径が、頭部
に向けて次第に山径を減じるように形成されて成る点に
ある。According to the second aspect of the present invention, the thread diameter over a plurality of pitches of the thread formed in the region of the shank to be screwed into the hard-cutting material gradually increases toward the head. It is formed so as to reduce the diameter.
【００１４】[0014]
【実施例】以下、図面に基づいて本発明の１実施例を詳
述する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.
【００１５】図１に示すように、建築用ネジ１１は、頭
部１２からシャンク１３を延設し、シャンク先端の尖鋭
部１４の近傍から頭部１２の近傍に至り螺糸１５を形成
している。尚、図示省略しているが、頭部１２の頂部に
は、プラス溝又はマイナス溝等、ドライバー等の回転工
具に係合する係合部が設けられている。As shown in FIG. 1, in a building screw 11, a shank 13 is extended from a head 12, and a screw thread 15 is formed from the vicinity of a sharp portion 14 at the tip of the shank to the vicinity of the head 12. There is. Although not shown, the top of the head 12 is provided with an engaging portion such as a plus groove or a minus groove that engages with a rotary tool such as a driver.
【００１６】このネジ１１は、前述した従来例と同様
に、木材等の硬削材を貫通してねじ込んだ後、ＡＬＣ等
の軟削材にねじ込むことにより、硬削材を軟削材に締着
するために使用される。このため、前記螺糸１５付きの
シャンク１３は、ＡＬＣ等の軟削材にねじ込まれる領域
１６（以下前方領域と称する）と、木材等の硬削材にね
じ込まれる領域１７（以下後方領域と称する）とを構成
している。Similar to the above-mentioned conventional example, the screw 11 penetrates a hard-cutting material such as wood and is then screwed into a soft-cutting material such as ALC to tighten the hard-cutting material into the soft-cutting material. Used to wear. Therefore, the shank 13 with the thread 15 has a region 16 (hereinafter referred to as a front region) screwed into a soft-cutting material such as ALC and a region 17 (hereinafter referred to as a rear region) screwed into a hard-cutting material such as wood. ) And make up.
【００１７】前方領域１６に形成された螺糸１５の複数
ピッチにわたるねじ山径Ｄ１は、後方領域１７に形成さ
れた螺糸１５の複数ピッチにわたるねじ山径Ｄ２に比較
して小径、即ち、Ｄ２＜Ｄ１に形成されている。The thread diameter D1 of the screw thread 15 formed in the front region 16 over a plurality of pitches is smaller than the thread diameter D2 of the screw thread 15 formed in the rear region 17 over a plurality of pitches, that is, D2. <D1 is formed.
【００１８】図示実施例において、シャンク１３から尖
鋭部１４に至り延設された螺糸１５は、ねじ山径を徐々
に減じるように形成されているが、尖鋭部１４に近傍す
る部分の構成は、本発明において特に重要ではない。In the illustrated embodiment, the thread 15 extending from the shank 13 to the sharpened portion 14 is formed so as to gradually reduce the thread diameter, but the structure of the portion near the sharpened portion 14 is , Is not particularly important in the present invention.
【００１９】前記尖鋭部１４の近傍を除くシャンク１３
の前方領域１６に延設された螺糸１５は、該前方領域１
６の全体にわたりねじ山径Ｄ１を均一、即ち、同径に形
成している。Shank 13 excluding the vicinity of the sharpened portion 14
The thread 15 extending in the front region 16 of the
The thread diameter D1 is formed uniformly over the whole of No. 6, that is, has the same diameter.
【００２０】一方、シャンク１３の後方領域１７に延設
された螺糸１５は、該後方領域１７の適宜の個所におい
てねじ山径Ｄ２を前記ねじ山径Ｄ１よりも小径に形成し
ているが、図示実施例の場合、後方領域１７の全体にわ
たりねじ山径Ｄ２を不均一、即ち、頭部１２に向けて次
第に山径を減じるように形成されている。従って、ねじ
山径は、複数ピッチに現れる螺糸１５ａ、１５ｂ、１５
ｃ、１５ｄの順で次第に小径ならしめている。On the other hand, the thread 15 extending in the rear region 17 of the shank 13 has a thread diameter D2 smaller than the thread diameter D1 at an appropriate portion of the rear region 17. In the case of the illustrated embodiment, the thread diameter D2 is nonuniform over the entire rear region 17, that is, the thread diameter is gradually reduced toward the head 12. Therefore, the thread diameter is determined by the screw threads 15a, 15b, 15 appearing at a plurality of pitches.
The diameter is gradually reduced in the order of c and 15d.
【００２１】尚、図示実施例において、頭部１２は、シ
ャンク１３に向けて次第に小径となるテーパ周壁を有す
る所謂皿頭状に形成され、該テーパ周壁にセレーション
１８を設けており、このセレーション１８は、図１に示
すような断面鋸歯状に形成することが好ましい。In the illustrated embodiment, the head portion 12 is formed in a so-called dish head shape having a tapered peripheral wall whose diameter gradually decreases toward the shank 13, and the serration 18 is provided on the tapered peripheral wall. Is preferably formed in a sawtooth cross section as shown in FIG.
【００２２】本実施例に示す建築用ネジ１１は、図２に
示すように、木材等の硬削材１９を貫通してねじ込んだ
後、ＡＬＣ等の軟削材２０にねじ込まれ、これにより硬
削材１９を軟削材２０に締着することを目的としてい
る。As shown in FIG. 2, the building screw 11 shown in this embodiment is screwed through a hard-cutting material 19 such as wood and then screwed into a soft-cutting material 20 such as ALC. The purpose is to fasten the cutting material 19 to the soft cutting material 20.
【００２３】図２（Ａ）に示すように、ネジ１１は、硬
削材１９を貫通するまでの間は、尖鋭部１４から前方領
域１６の部分が螺進する。この状態において、ネジ１１
は、硬削材１９に対して螺糸１５のピッチに相当した正
常なスラストＦを得られる。即ち、ネジ１１は、一回転
すると、螺糸１５の一ピッチに相当して前進する。As shown in FIG. 2 (A), the screw 11 is screwed from the sharpened portion 14 to the front region 16 until it penetrates the hard-cutting material 19. In this state, screw 11
Can obtain a normal thrust F corresponding to the pitch of the screw thread 15 with respect to the hard-cutting material 19. That is, when the screw 11 makes one revolution, the screw 11 advances corresponding to one pitch of the screw thread 15.
【００２４】引き続き、図２（Ｂ）に示すように、ネジ
１１の前方領域１６が軟削材２０に進入すると、前述の
ように、軟削材２０に対する螺糸１５の食いつきは良好
でなく、軟削材２０との間でスリップしつつ回転するの
で、螺糸１５のピッチから得られるスラストよりも小さ
い不良なスラストｆとされ、ネジ１１は、一回転しても
螺糸１５の一ピッチよりも短い距離だけしか前進しな
い。Subsequently, as shown in FIG. 2B, when the front region 16 of the screw 11 enters the soft-cutting material 20, the biting of the thread 15 with respect to the soft-cutting material 20 is not good as described above. Since the screw 11 rotates while slipping with the soft-cutting material 20, the thrust f is smaller than the thrust obtained from the pitch of the screw thread 15, and even if the screw 11 makes one rotation, it becomes more than one pitch of the screw thread 15. Even only a short distance can move forward.
【００２５】ところで、図２（Ｂ）のように、ネジ１１
は、軟削材２０に対して前方領域１６を進入せしめた状
態において、硬削材１９に対しては後方領域１７を貫通
せしめることになる。そこで、後方領域１７において
は、前述のように螺糸１５のねじ山が小径に形成されて
いるので、先にねじ山を大径とした前方領域１６の螺糸
によりタッピングされた硬削材１９の雌ねじに対して、
後方領域１７の螺糸１５がスリップし易い条件を生成さ
れている。その結果、後方領域１７と硬削材１９との螺
合状態は、螺糸１５のピッチに相当した正常なスラスト
Ｆではなく、スラストを減じた不良なスラストＦ−αを
可能とする。即ち、後方領域１７において、ネジ１１
は、一回転しても螺糸１５の一ピッチよりも短い距離だ
けしか前進せしめないことを可能にする。By the way, as shown in FIG. 2B, the screw 11
In the state where the front region 16 is made to enter the soft cutting material 20, the rear region 17 is made to penetrate the hard cutting material 19. Therefore, in the rear region 17, since the screw thread of the screw thread 15 is formed to have a small diameter as described above, the hard-cutting material 19 tapped by the screw thread of the front region 16 having the large thread diameter first. Against the female thread of
The condition that the screw 15 in the rear area 17 is likely to slip is generated. As a result, the screwing state between the rear region 17 and the hard-cutting material 19 enables not the normal thrust F corresponding to the pitch of the thread 15 but a defective thrust F-α with reduced thrust. That is, in the rear area 17, the screws 11
Makes it possible to advance only by a distance shorter than one pitch of the screw thread 15 even after one rotation.
【００２６】このため、軟削材２０を螺進する前方領域
１６のスラストｆと、硬削材１９を螺進する後方領域１
７のスラストＦ−αとは、相互に顕著な差を生じること
がなく、可及的に同調せしめられるので、従来のように
硬削材１９が浮き上がることはなく、図２（Ｃ）のよう
に、硬削材１９を軟削材２０に押し付けながらネジ１１
による締着が行われる。Therefore, the thrust f of the front region 16 in which the soft-cutting material 20 is screwed, and the rear region 1 in which the hard-cutting material 19 is screwed in.
The thrust F-α of No. 7 does not cause a significant difference from each other and can be synchronized as much as possible, so that the hard-working material 19 does not float up as in the conventional case, as shown in FIG. 2 (C). While pressing the hard-cutting material 19 against the soft-cutting material 20, the screw 11
Will be tightened.
【００２７】前記作用について更に敷衍すると、図３に
示すように、ネジ１１が硬削材１９を貫通して軟削材２
０に螺入された状態において、硬削材１９には、前方領
域１６の大径とされた螺糸１５ｅ、１５ｆにより削成さ
れた雌ねじ２１が形成されており、この雌ねじ２１に、
後方領域１７の小径とされた螺糸１５ａ、１５ｂが螺合
している。然しながら、後方領域１７の螺糸１５ａ、１
５ｂは、ねじ山径を小径とされているため、雌ねじ２１
に対して遊合された状態にあり、前述のようにスリップ
し易い状態とされている。When the above operation is further extended, as shown in FIG. 3, the screw 11 penetrates the hard cutting material 19 and the soft cutting material 2
In the state of being screwed into 0, the hard cutting material 19 is formed with a female thread 21 that is machined by the large diameter threads 15e and 15f of the front region 16, and the female thread 21 is
The small-diameter screw threads 15a and 15b of the rear area 17 are screwed together. However, the threads 15a, 1 of the rear area 17
Since 5b has a small thread diameter, the internal thread 21
It is in a state of being loosely engaged with each other, and is in a state of easily slipping as described above.
【００２８】ところで、図３に示す実施例においては、
前方領域１６の螺糸１５ｅ、１５ｆのねじ山径よりも、
後方領域１７の螺糸１５ａ、１５ｂのねじ山径を小径と
なるように形成する際、螺糸１５ａ、１５ｂと螺糸１５
ｅ、１５ｆのフランク角に特別な変更を加えていないた
め、例えば、硬削材１９に形成された雌ねじ２１に対し
て、後方領域１７の螺糸１５ａ、１５ｂが、前進側のフ
ランク２２を雌ねじ２１に接触させる反面、後退側のフ
ランク２３を雌ねじ２１に接触させないような事態を生
じる。然しながら、この場合でも、後退側のフランク２
３が雌ねじ２１に接触しておらず、特に、螺糸１５ａ、
１５ｂのねじ山頂部２４が雌ねじ２１の谷に接触してい
ないので、前述したスリップの条件を必要最小限で満た
すことができる。By the way, in the embodiment shown in FIG.
Than the thread diameters of the threads 15e and 15f in the front region 16,
When forming the thread diameters of the threads 15a and 15b in the rear area 17 to be small, the threads 15a and 15b and the thread 15
Since no special change is made to the flank angles of e and 15f, for example, with respect to the internal thread 21 formed on the hard-cutting material 19, the threads 15a and 15b of the rear region 17 connect the forward flank 22 to the internal thread. On the other hand, the flank 23 on the retracted side is prevented from coming into contact with the female screw 21 while being brought into contact with 21. However, even in this case, the backward flank 2
3 is not in contact with the internal thread 21, and in particular, the thread 15a,
Since the thread crest 24 of 15b is not in contact with the trough of the female thread 21, the above-described slip condition can be satisfied with a necessary minimum.
【００２９】特に、硬削材１９が木材等の繊維質の素材
である場合、前方領域１６の螺糸１５ｅ、１５ｆにより
硬削材１９に雌ねじ２１を削成するとき、繊維組織を引
きちぎるように破壊しつつ削成するので、雌ねじ２１
は、螺糸１５ｅ、１５ｆの形状に完全に一致せしめられ
るのではなく、図３の鎖線に示すように、部分的に該螺
糸の形状よりも大きな形状の雌ねじ２１ａ、２１ａとさ
れ易く、後方領域１７における螺糸１５ａ、１５ｂの前
後フランク２２、２３との接触力を軽減するので、これ
により前述のスリップの条件を増大する。In particular, when the hard-cutting material 19 is a fibrous material such as wood, when the internal thread 21 is cut into the hard-cutting material 19 by the threads 15e and 15f of the front region 16, the fiber structure is torn off. Female thread 21
Is not made to completely match the shape of the threads 15e and 15f, but as shown by the chain line in FIG. 3, it is easy to form the internal threads 21a and 21a that are partially larger than the shape of the threads, and Since the contact force between the front and rear flanks 22 and 23 of the screw threads 15a and 15b in the area 17 is reduced, the slip condition described above is increased thereby.
【００３０】因に、本発明のスリップ効果を更に増すた
めには、図４に示すように、後方領域１７の螺糸１５
ａ、１５ｂのねじ山径を小径とすることに加えて、前後
フランク２２、２３の角度を雌ねじ２１、２１と接触し
難いように傾斜せしめて形成することが有利である。然
しながら、本発明において、必要最小限、所期のスリッ
プ効果を得るためには、少なくとも、上述のように、後
方領域１７の螺糸１５ａ、１５ｂのねじ山径Ｄ２を前方
領域１６の螺糸１５ｅ、１５ｆのねじ山径Ｄ１よりも小
径に形成すれば良い。Incidentally, in order to further increase the slip effect of the present invention, as shown in FIG.
In addition to reducing the thread diameters of a and 15b, it is advantageous to form the front and rear flanks 22 and 23 by inclining them so that the front and rear flanks 22 and 23 are less likely to contact the female threads 21 and 21. However, in the present invention, in order to obtain the minimum necessary and desired slip effect, at least as described above, the thread diameter D2 of the threads 15a and 15b of the rear area 17 is set to the thread 15e of the front area 16. , 15f may be formed with a diameter smaller than the thread diameter D1.
【００３１】また、上述のように、後方領域１７の螺糸
１５ａ、１５ｂのねじ山径を、頭部１２に向けて次第に
山径を減じるように形成しておけば、硬削材１９に対す
るネジ１１の貫通螺進に際し、螺着トルクに急変を生じ
ることがなく、硬削材１９中における前方領域１６から
後方領域１７への移行がスムースに行われる。Further, as described above, if the thread diameters of the threads 15a and 15b in the rear region 17 are formed so as to gradually decrease toward the head portion 12, the screw for the hard-cutting material 19 is screwed. When the through-threading of 11 is performed, the screwing torque does not suddenly change, and the transition from the front region 16 to the rear region 17 in the hard-cutting material 19 is smoothly performed.
【００３２】尚、ネジ１１を硬削材１９から軟削材２０
にねじ込み締着を行う作業は、通常の場合、瞬時に作業
を完了する。従って、前述のように作業中においては、
後方領域１７の螺糸１５ａ、１５ｂと雌ねじ２１との間
に隙間を有していても、硬削材１９が木材等の繊維質の
場合は、締着作業完了後、暫くすると、素材の弾性復元
により、隙間を閉じて螺糸１５ａ、１５ｂを硬削材１９
中に密着せしめる。The screws 11 are changed from the hard cutting material 19 to the soft cutting material 20.
In the usual case, the work of screwing and tightening is completed instantly. Therefore, during work as described above,
Even if there is a gap between the threads 15a and 15b in the rear region 17 and the internal thread 21, if the hard-cutting material 19 is made of fibrous material such as wood, the elasticity of the material will not be felt for a while after the fastening operation is completed. Upon restoration, the gap is closed and the screws 15a and 15b are made into the hard cutting material 19
Put it inside.
【００３３】本発明のベストモードを次に示す。 ネジ１１の尖鋭部１４から頭部１２までの全長 ５５．０mm シャンク１３の外径（螺糸１５のねじ谷径） ３．０mm 前方領域１６の螺糸１５のねじ山径Ｄ１ ６．０mm 後方領域１６の螺糸１５のねじ山径Ｄ２ 螺糸１５ａ ５．９mm 螺糸１５ｂ ５．８mm 螺糸１５ｃ ５．７mm 螺糸１５ｄ ５．６mmThe best mode of the present invention is shown below. Overall length from the sharpened portion 14 to the head portion 12 of the screw 11 55.0 mm Outer diameter of the shank 13 (thread root diameter of the screw thread 15) 3.0 mm Thread diameter D1 of the screw thread 15 in the front region 16 6.0 mm Rear region Thread diameter of 16 screws 15 D2 screw 15a 5.9 mm screw 15b 5.8 mm screw 15c 5.7 mm screw 15d 5.6 mm
【００３４】前記ベストモードによれば、ねじ山径Ｄ１
に対するねじ山径Ｄ２（螺糸１５ａ、１５ｂ、１５ｃ、
１５ｄの平均値）は、５．７５／６．０であるが、本発
明において、前記スリップ効果と、ネジ締着後の硬削材
１９の固定効果の両方を満足せしめるためには、５．８
／６．０〜５．４／６．０の範囲であれば良く、ネジの
全長や、螺糸の谷径及び山径等の寸法は、適宜設計を変
更することが可能である。According to the best mode, the thread diameter D1
To the thread diameter D2 (screws 15a, 15b, 15c,
The average value of 15d) is 5.75 / 6.0, but in the present invention, in order to satisfy both the slip effect and the effect of fixing the hard-cutting material 19 after tightening the screws, the value of 5. 8
The range may be /6.0 to 5.4 / 6.0, and the design of the total length of the screw and the dimensions such as the root diameter and the peak diameter of the thread can be appropriately changed.
【００３５】[0035]
【発明の効果】請求項１に記載の本発明によれば、ネジ
１１を、木材等の硬削材１９を貫通してねじ込んだ後、
ＡＬＣ等の軟削材２０にねじ込み、硬削材１９を軟削材
２０に締着する際し、軟削材２０にねじ込まれる前方領
域１６における螺糸１５の複数ピッチにわたるねじ山径
Ｄ１に対して、硬削材１９にねじ込まれる後方領域にお
ける螺糸の複数ピッチにわたるねじ山径Ｄ２を、Ｄ２＜
Ｄ１に形成したものであるから、硬削材１９の浮き上が
りを防止できる。従って、従来のようにネジの締着前に
硬削材１９が浮き上がって締着作業に支障を来たした
り、隣接して先に締着を完了したネジに所謂バカねじ状
態を生じる虞れはないという効果がある。According to the present invention as set forth in claim 1, after the screw 11 is screwed through the hard cutting material 19 such as wood,
When screwing into the soft-cutting material 20 such as ALC and fastening the hard-cutting material 19 to the soft-cutting material 20, with respect to the screw thread diameter D1 over a plurality of pitches of the thread 15 in the front region 16 screwed into the soft-cutting material 20, The thread diameter D2 over a plurality of pitches of the screw thread in the rear region screwed into the hard-cutting material 19 is D2 <
Since it is formed in D1, it is possible to prevent the hard cutting material 19 from rising. Therefore, unlike the conventional case, there is no possibility that the hard-cutting material 19 floats up before tightening the screw, which hinders the tightening work, or causes a so-called stupid screw state to occur in the screw that has been previously fastened. There is an effect.
【００３６】請求項２に記載の本発明によれば、後方領
域１７における螺糸１５の複数ピッチにわたるねじ山径
を頭部１２に向けて次第に山径を減じるように形成して
いるので、硬削材１９にネジ１１を貫通し螺進せしめる
作業中に、螺着トルクに急変を生じることがなく、硬削
材１９に対する前方領域１６から後方領域１７への移行
がスムースに行われるという効果がある。According to the second aspect of the present invention, since the thread diameter of the screw thread 15 in the rear region 17 over a plurality of pitches is gradually reduced toward the head portion 12, the hard thread is formed. During the work of penetrating the screw 11 through the work material 19 and screwing it, there is no abrupt change in the screwing torque, and the effect that the transition from the front region 16 to the rear region 17 with respect to the hard work material 19 is smoothly performed. is there.
【図１】本発明の１実施例を示す側面図である。FIG. 1 is a side view showing an embodiment of the present invention.
【図２】本発明の１実施例の作用を示し、（Ａ）はネジ
の前方領域を硬削材にねじ込んでいる状態を示す縦断側
面図、（Ｂ）は硬削材を貫通せしめネジの前方領域を軟
削材にねじ込んでいる状態を示す縦断側面図、（Ｃ）は
ネジの締着完了した状態を示す縦断側面図である。FIG. 2 shows the operation of one embodiment of the present invention, (A) is a vertical cross-sectional side view showing a state in which the front region of the screw is screwed into the hard-cutting material, and (B) is a view of a screw threaded through the hard-cutting material. FIG. 4C is a vertical cross-sectional side view showing a state in which the front region is screwed into the soft-cutting material, and FIG.
【図３】本発明の１実施例の作用を示す拡大断面図であ
る。FIG. 3 is an enlarged sectional view showing the operation of one embodiment of the present invention.
【図４】本発明の付加実施例を示す拡大断面図である。FIG. 4 is an enlarged sectional view showing an additional embodiment of the present invention.
【図５】従来のネジを示し、（Ａ）はネジを硬削材にね
じ込んでいる状態を示す縦断側面図、（Ｂ）はネジを硬
削材に貫通させ更に軟削材にねじ込んでいる状態を示す
縦断側面図、（Ｃ）はネジの締着直前の状態を示す縦断
側面図である。FIG. 5 shows a conventional screw, (A) is a vertical sectional side view showing a state in which the screw is screwed into a hard-cutting material, and (B) shows the screw being penetrated into the hard-cutting material and further screwed into a soft-cutting material. FIG. 3C is a vertical sectional side view showing a state, and FIG. 6C is a vertical sectional side view showing a state immediately before tightening the screw.
１１ ネジ １２ 頭部 １３ シャンク １４ 尖鋭部 １５ 螺糸 １６ 前方領域 １７ 後方領域 １９ 硬削材 ２０ 軟削材 ２１ 雌ねじ ２２ 前進側フランク ２３ 後退側フランク ２４ ねじ山頂部 11 Screw 12 Head 13 Shank 14 Sharp Part 15 Thread 16 Front Area 17 Rear Area 19 Hardworking Material 20 Softworking Material 21 Female Thread 22 Advancement Side Frank 23 Retraction Side Frank 24 Thread Top
Claims (2)
ンクを延設し、シャンク先端の尖鋭部近傍から頭部近傍
に至り螺糸を形成して成り、硬削材を貫通してねじ込ん
だ後、軟削材にねじ込むことにより、前記硬削材を軟削
材に締着するための建築用ネジにおいて、前記シャンク
の軟削材にねじ込まれる領域に形成された螺糸の複数ピ
ッチにわたるねじ山径Ｄ１に対して、硬削材にねじ込ま
れる領域に形成された螺糸の複数ピッチにわたるねじ山
径Ｄ２を、Ｄ２＜Ｄ１に形成して成ることを特徴とする
建築用ネジ。1. A shank is extended from a head provided with an engaging portion of a rotary tool, and a screw thread is formed from the vicinity of the sharp portion of the shank to the vicinity of the head to penetrate a hard-cutting material. After being screwed, by screwing into a soft-cutting material, in a building screw for fastening the hard-cutting material to the soft-cutting material, a plurality of pitches of screw threads formed in a region of the shank to be screwed into the soft-cutting material. A construction screw characterized in that a thread diameter D2 extending over a plurality of pitches of a thread formed in a region to be screwed into a hard-cutting material is formed such that D2 <D1 with respect to the thread diameter D1 extending over.
域に形成された螺糸の複数ピッチにわたるねじ山径が、
頭部に向けて次第に山径を減じるように形成されて成る
ことを特徴とする請求項１に記載の建築用ネジ。2. The thread diameters of a plurality of pitches of a thread formed in a region of the shank screwed into a hard-cutting material are:
The building screw according to claim 1, wherein the screw is formed so as to gradually reduce the mountain diameter toward the head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5189126A JP2514579B2 (en) | 1993-06-30 | 1993-06-30 | Architectural screws |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5189126A JP2514579B2 (en) | 1993-06-30 | 1993-06-30 | Architectural screws |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0719219A true JPH0719219A (en) | 1995-01-20 |
| JP2514579B2 JP2514579B2 (en) | 1996-07-10 |
Family
ID=16235833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5189126A Expired - Fee Related JP2514579B2 (en) | 1993-06-30 | 1993-06-30 | Architectural screws |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2514579B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7366595B1 (en) | 1999-06-25 | 2008-04-29 | Seiko Epson Corporation | Vehicle drive assist system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02286903A (en) * | 1989-04-27 | 1990-11-27 | Shinjiyou Seisakusho:Kk | Compound screw |
-
1993
- 1993-06-30 JP JP5189126A patent/JP2514579B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02286903A (en) * | 1989-04-27 | 1990-11-27 | Shinjiyou Seisakusho:Kk | Compound screw |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7366595B1 (en) | 1999-06-25 | 2008-04-29 | Seiko Epson Corporation | Vehicle drive assist system |
| US7640108B2 (en) | 1999-06-25 | 2009-12-29 | Fujitsu Ten Limited | Vehicle drive assist system |
| US7640107B2 (en) | 1999-06-25 | 2009-12-29 | Fujitsu Ten Limited | Vehicle drive assist system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2514579B2 (en) | 1996-07-10 |
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