JP4199690B2 - Lorry floor structure - Google Patents

Lorry floor structure Download PDF

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JP4199690B2
JP4199690B2 JP2004083807A JP2004083807A JP4199690B2 JP 4199690 B2 JP4199690 B2 JP 4199690B2 JP 2004083807 A JP2004083807 A JP 2004083807A JP 2004083807 A JP2004083807 A JP 2004083807A JP 4199690 B2 JP4199690 B2 JP 4199690B2
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tapping screw
head
joists
floor
wooden
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JP2005271612A5 (en
JP2005271612A (en
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昌士 藤田
誠久 北條
禮雄 間崎
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日本トレクス株式会社
北西物産株式会社
間崎ファスナー株式会社
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Description

本発明は、トラックやコンテナ車両などのように貨物を輸送する貨物自動車の床構造に関し、貨物が積載される床板が木材製である貨物自動車に適用する床構造に関する。   The present invention relates to a floor structure of a lorry that transports cargo such as trucks and container vehicles, and relates to a floor structure that is applied to a lorry in which a floor board on which cargo is loaded is made of wood.

貨物自動車には荷台にコンテナが取り付けられるタイプと、荷台の煽りに必要に応じて幌を装着するようにしたタイプがあり、コンテナ車には、内部に貨物室を形成するコンテナの側壁と天壁とが一体となって上下方向に開閉するウイングボディ車や、冷蔵冷凍車のようにコンテナの後壁または側壁に観音開き式のドアが設けられたバンボディ車などがある。   There are two types of freight cars: a container with a container attached to the loading platform and a type with a hood attached to the loading platform as needed. The container vehicle has a side wall and a ceiling wall that form a cargo compartment inside. And a wing body vehicle that opens and closes in a vertical direction, and a van body vehicle that has a double-folded door on the rear wall or side wall of a container, such as a refrigerated refrigerator.

いずれのタイプの貨物自動車においても、荷台の床は車両の幅方向に伸びて相互に平行となって複数本車体に設けられる横根太と、横根太により形成される支持面の上に取り付けられる床板により形成されており、床板としてはアルミニウム合金などの金属製の板が使用される場合と、熱帯林の主要樹木であるアピトンなどの木材が使用される場合とがある。   In any type of lorry, the floor of the loading platform extends in the width direction of the vehicle and is parallel to each other. There are cases where a metal plate such as an aluminum alloy is used as a floor board and wood such as apiton which is a main tree of a tropical forest.

貨物自動車の荷台の床を木製の板材により製造する場合には、板材を金属製の横根太の上に配置した状態のもとで、ドリルを用いて板材から根太材にまで貫通させて下穴を穿設した後に、タッピングスクリューつまりタッピングねじを板材を貫通させて根太材にねじ止めしている。タッピングねじはねじ自身でねじ立て行うドリルねじ部を有しており、床板を根太材に固定するためのタッピングねじとしては、十字穴付き皿タッピングねじがある。この十字穴付き皿タッピングねじは、ドリルねじ部の基端部に設けられた頭部の表面が平坦面となっており、平坦な頭部表面にはプラスドライバーの先端を係合させるための十字形状の係合穴が形成されている。皿タッピングねじには、十字形状の係合穴以外に六角形の係合穴など種々形状の係合穴が頭部に設けられている。   When the floor of a cargo truck bed is made of wooden board material, a drill is used to penetrate the board material from the board material to the joist board with the plate material placed on the metal horizontal joist. After tapping, a tapping screw, that is, a tapping screw is passed through the plate material and screwed to the joist. The tapping screw has a drill screw portion that is tapped by the screw itself, and as a tapping screw for fixing the floor plate to the joist, there is a countersunk tapping screw with a cross hole. The cross tapped screw with a cross hole has a flat head surface provided at the base end of the drill screw, and the flat head surface is a cross for engaging the tip of a Phillips screwdriver. A shaped engagement hole is formed. In addition to the cross-shaped engagement hole, the flat tapping screw is provided with engagement holes of various shapes such as hexagonal engagement holes in the head.

皿タッピングねじは、頭部の表面が平坦となっているので、ドライバーを用いて皿タッピングねじを板材にねじ止めすると、頭部の表面は板材の表面と同一面となって、皿タッピングねじの頭部は床面の一部を形成することになる。しかしながら、従来公知の皿タッピングねじを用いて木製板材を車体にねじ止めすると、ねじ止めが終了した時にねじの頭部の外周から木製板材の一部が繊維状のバリとなって床板表面から突出することになる。   Since the flat tapping screw has a flat head surface, when the flat tapping screw is screwed to the plate using a screwdriver, the head surface becomes flush with the plate surface. The head will form part of the floor. However, when a wooden plate is screwed to the vehicle body using a conventionally known counter-tapping screw, when the screwing is finished, a part of the wooden plate protrudes from the floor plate surface as a fibrous burr from the outer periphery of the screw head. Will do.

このため、これまでは、ねじ止め作業が終了した後に、グラインダーなとの研磨具により突出した木材製の床板繊維のバリを除去する作業が不可避であった。この作業では木材繊維のバリの部分にグラインダーを押しつけてこれを除去しており、熟練の作業者であってもバリ取り作業の痕跡を床板面になくすことは不可能であった。したがって、床板を木製板材とする場合には、床表面の仕上げ品質を高めることは困難であった。   For this reason, until now, after the screwing operation has been completed, it has been unavoidable to remove the burrs of the floorboard fibers made of wood that protrude with a grinder that is a grinder. In this work, the grinder was pressed against the burrs of the wood fiber to remove it, and even a skilled worker could not eliminate traces of the deburring work on the floor board surface. Therefore, when the floor board is made of a wooden board, it is difficult to improve the finishing quality of the floor surface.

本発明の目的は、貨物自動車の荷台の木製床板表面のバリ取り作業を不要とする貨物自動車の床構造を提供することにある。   SUMMARY OF THE INVENTION An object of the present invention is to provide a floor structure for a lorry that eliminates the need for deburring the surface of a wooden floor board of a cargo truck.

本発明の他の目的は、荷台の木製床板表面をバリのない綺麗な表面に仕上げるようにした貨物自動車の床構造を提供することにある。   Another object of the present invention is to provide a floor structure for a lorry in which the wooden floor board surface of the loading platform is finished to a clean surface free of burrs.

本発明の貨物自動車の床構造は、貨物自動車の荷台を構成する複数本の金属製の根太材と、前記根太材の上に配置される木製板と、前記木製板を貫通して前記根太材にねじ結合されて前記木製板を前記根太材に締結する皿タッピングねじとを有する貨物自動車の床構造であって、前記皿タッピングねじは、前記根太材にねじ結合するねじ部と、外周部にフランジが設けられ表面が平坦となるとともに前記ねじ部に一体に設けられ頭部とを有し、前記頭部の背面側に、テーパ面と当該テーパ面の外周端から径方向に突出する径方向面とを有する木材押し付け面を形成し、前記径方向面に径方向外方に向けて突出するように傾斜した傾斜面と、当該傾斜面の回転方向端に前記木材押し付け面に対してほぼ垂直となった食い込み面とを有する複数の切り込み突起を前記径方向面に設け、前記テーパ面により外方に押し広げられた木製板の一部を前記切り込み突起により回転方向に移動させて前記木材押し付け面内に捕捉することを特徴とする。 The floor structure of a lorry according to the present invention includes a plurality of metal joists constituting a loading platform of a lorry, a wooden board disposed on the joists, and the joists passing through the wooden boards. A floor structure of a lorry vehicle having a countersunk tapping screw that is screwed to the joist to fasten the wooden board, and the counter tapping screw has a screw part screwed to the joist and an outer peripheral part. together with the surface flange is provided becomes flat and a head portion that is provided integrally with the threaded portion, protruding on the rear side of the head, radially from the outer peripheral end of the tapered surface and the tapered surface diameter Forming a wood pressing surface having a directional surface, an inclined surface inclined so as to protrude radially outward on the radial surface, and a rotation direction end of the inclined surface substantially with respect to the wooden pressing surface A plurality having vertical bite surfaces Wherein the benzalkonium cuts a projection provided in the radial plane, to capture the move in the rotational direction by the part of the wooden plate is spread outward notch projection by the tapered surface on the timber pressing plane And

本発明によれば、皿タッピングねじを用いて木製板を根太材にねじ止めすると、皿タッピングねじの頭部裏面の木材押し付け面に設けられた切り込み突起により木製板の塑性変形部が回転方向に移動して皿タッピングねじの頭部の外周からは塑性変形部に起因したバリが発生することを防止できる。これにより、木製板を根太材に締結するための皿タッピングねじの取付作業が終了した後に、木製板の表面を研磨仕上げすることが不要となり、皿タッピングねじの頭部を含めた木材板の表面をバリのない綺麗な表面に仕上げることができるとともに、貨物自動車の製造工程を少なくして製造能率を向上することができる。   According to the present invention, when the wooden board is screwed to the joist using the counter tapping screw, the plastic deformation portion of the wooden board is rotated in the rotation direction by the notch protrusion provided on the wood pressing surface on the back surface of the head of the counter tapping screw. It is possible to prevent the occurrence of burrs caused by the plastic deformation portion from the outer periphery of the head of the counter tapping screw by moving. This eliminates the need to polish the surface of the wooden board after the installation work of the counter tapping screw for fastening the wooden board to the joists, and the surface of the wooden board including the head of the counter tapping screw. Can be finished on a clean surface without burrs, and the manufacturing efficiency of the truck can be improved by reducing the manufacturing process of the truck.

以下、本発明の実施の形態を図面に基づいて詳細に説明する。図1は貨物自動車の一例としてのバンボディ車を示す斜視図であり、図2は図1のA−A線に沿う方向の縦断面図である。このバンボディ車は車両本体の荷台にコンテナ1が搭載されており、コンテナ1は木製板材からなる床板2と、床板2の前端に配置される前壁3と、床板2の後端に配置され左右方向にヒンジを中心に開閉可能なドア4aを備えた後壁4と、左右の側壁5,6と、これらの壁3〜6と一体となった天井壁7とを備え、内部に貨物室8が形成されている。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a van body vehicle as an example of a cargo vehicle, and FIG. 2 is a longitudinal sectional view in a direction along the line AA in FIG. In this van body vehicle, a container 1 is mounted on a loading platform of a vehicle body, and the container 1 is disposed on a floor board 2 made of wooden board material, a front wall 3 arranged at a front end of the floor board 2, and arranged at a rear end of the floor board 2. It includes a rear wall 4 having a door 4a that can be opened and closed around a hinge in the direction, left and right side walls 5 and 6, and a ceiling wall 7 integrated with these walls 3 to 6, and a cargo compartment 8 inside. Is formed.

図2に示すように、車両本体には車両の走行方向に伸びる複数本の縦根太材9と、縦根太材9の上に取り付けられ車幅方向に伸びる複数本の横根太材10とが取り付けられ、これらの根太材9,10により荷台が構成されている。コンテナ1は荷台の上に取り付けられており、コンテナ1を構成する木製板材からなる床板2は横根太材10に皿タッピングねじにより締結されている。   As shown in FIG. 2, a plurality of vertical joists 9 extending in the running direction of the vehicle and a plurality of horizontal joists 10 extending on the vertical joists 9 and extending in the vehicle width direction are attached to the vehicle body. A cargo bed is constituted by these joists 9 and 10. The container 1 is mounted on a loading platform, and the floor board 2 made of a wooden board constituting the container 1 is fastened to the horizontal joist 10 with a flat tapping screw.

図3は床板2と横根太材10の一部を示す拡大断面図であり、横根太材10は、主壁部10aとこれの両側から主壁部10aに対して直角方向を向いて主壁部10aに一体に連なった側壁部10b,10cを有し、横断面がコの字形状となった鋼製のチャンネル材により構成されており、一方の側壁部10bが下側となって縦根太材9に取り付けられ、他方の側壁部10cが上側となってこの上面に床板2が締結されている。   FIG. 3 is an enlarged cross-sectional view showing a part of the floor board 2 and the horizontal joist 10. The horizontal joist 10 is directed to the main wall 10 a and the main wall 10 b from both sides thereof in a direction perpendicular to the main wall 10 a. It has side wall portions 10b and 10c that are integrally connected to the portion 10a, and is made of a steel channel material having a U-shaped cross section. It is attached to the material 9, and the other side wall portion 10c is on the upper side, and the floor plate 2 is fastened to the upper surface.

床板2は木材であるアピトンにより構成されている。ただし、床板2としてはアピトンに限らず、木材であれば他の樹木でも良く合板を使用しても良い。この床板2の下面にはアルミニウム製のシートからなるアンダーパン2aが貼り付けられており、このアンダーパン2aにより床板2の耐水性が確保されている。このアンダーパン2aとしては、アルミニウムなどの金属シート以外にFRPなどの樹脂製のシートを使用するようにしても良い。   The floor board 2 is made of apiton, which is wood. However, the floor board 2 is not limited to Apiton, and any other tree may be used as long as it is wood, and plywood may be used. An underpan 2a made of an aluminum sheet is attached to the lower surface of the floor board 2, and the water resistance of the floor board 2 is secured by the underpan 2a. As the underpan 2a, a resin sheet such as FRP may be used in addition to a metal sheet such as aluminum.

図4は床板2を横根太材10に締結するための皿タッピングねじ11を示す斜視図であり、図5(A)は図4の一部切り欠き正面図であり、図5(B)は図5(A)におけるB−B線に沿う拡大断面図であり、図5(C)は図5(B)におけるC−C線に沿う拡大断面図であり、図5(D)は図5(C)におけるD−D線に沿う矢視図である。   4 is a perspective view showing a flat tapping screw 11 for fastening the floor board 2 to the side joists 10, FIG. 5A is a partially cutaway front view of FIG. 4, and FIG. 5A is an enlarged cross-sectional view taken along line BB in FIG. 5A, FIG. 5C is an enlarged cross-sectional view taken along line CC in FIG. 5B, and FIG. It is an arrow line view which follows the DD line in (C).

この皿タッピングねじ11は、ねじ部12とこれの基端部に一体となった頭部13とを有し、ねじ部12の先端部には横根太材10に予め形成された下穴にねじ止め時にねじ立てしてねじ穴形成を行うための切り刃つまりドリルねじ部14が設けられている。頭部13の表面15は図5(A)に示すように平坦となっており、頭部13には電動ドライバーなどの回転工具が係合する工具係合穴16が設けられている。この工具係合穴16は図示する場合には、ほぼ六角形の穴となっており、回転工具は工具係合穴16の形状に対応した六角形の部材が使用される。ただし、この工具係合穴16を十字形状の穴としても良く、さらには回転工具が係合する形状であれば、他の任意の形状としても良い。   The flat tapping screw 11 has a screw portion 12 and a head portion 13 integrated with a base end portion of the screw portion 12. A screw hole 12 is screwed into a prepared hole formed in advance in the horizontal joist 10 at the distal end portion of the screw portion 12. A cutting blade, that is, a drill screw portion 14 is provided for forming a screw hole by tapping at the time of stopping. The surface 15 of the head 13 is flat as shown in FIG. 5A, and the head 13 is provided with a tool engagement hole 16 for engaging a rotary tool such as an electric screwdriver. In the illustrated case, the tool engagement hole 16 is a substantially hexagonal hole, and a hexagonal member corresponding to the shape of the tool engagement hole 16 is used as the rotary tool. However, the tool engagement hole 16 may be a cross-shaped hole, and may be any other shape as long as the rotary tool is engaged.

頭部13の外周部にはフランジ17が設けられており、頭部13のねじ部側つまり背面は木材押し付け面18となっている。木材押し付け面18は、図5(B)に示されるようにテーパ面18aと、フランジ17の背面つまり径方向面18bとにより形成されており、テーパ面18aの外周縁19とフランジ17の外周縁20との間が径方向面18bとなっている。図示する皿タッピングねじ11は、その長さ寸法Lが60mmであり、ねじ部12の呼び径Dが6mmであり、頭部13の外径Bが13mmであり、フランジ17の厚み寸法Wが1.2mmであり、テーパ面18aの傾斜角度θが90度となっている。ただし、長さ寸法Lは、床板2の厚みに応じて、たとえば、35mmおよび45mmなどのように任意に設定することができ、同様に、外径B、呼び径Dおよび厚み寸法Wについても任意に設定することができる。   A flange 17 is provided on the outer peripheral portion of the head portion 13, and the screw portion side, that is, the back surface of the head portion 13 is a wood pressing surface 18. As shown in FIG. 5B, the wood pressing surface 18 is formed by a tapered surface 18a and a back surface of the flange 17, that is, a radial surface 18b. The outer peripheral edge 19 of the tapered surface 18a and the outer peripheral edge of the flange 17 are formed. Between 20 is a radial surface 18b. The flat tapping screw 11 shown in the figure has a length L of 60 mm, a nominal diameter D of the screw portion 12 is 6 mm, an outer diameter B of the head 13 is 13 mm, and a thickness dimension W of the flange 17 is 1.2. mm, and the inclination angle θ of the tapered surface 18a is 90 degrees. However, the length dimension L can be arbitrarily set, for example, 35 mm and 45 mm depending on the thickness of the floor board 2, and similarly, the outer diameter B, the nominal diameter D and the thickness dimension W are also arbitrary. Can be set to

木材押し付け面18を構成する径方向面18bには、図5(B)に示すように円周方向に所定の間隔毎に6つの切り込み突起21が設けられている。ただし、切り込み突起21の数は図示する6つに限定されることなく、任意の数とすることができる。それぞれの切り込み突起21は図5(C)に示されるように径方向面18bの内周側を起点として径方向外方に向けて径方向面18bから突出するように、つまり木材押し付け面18から離れる方向に傾斜した傾斜面22を有している。傾斜面22の円周方向つまり回転方向の両端には、図5(D)に示されるように木材押し付け面18に対してほぼ垂直となった食い込み面23が形成され、食い込み面23により木材押し付け面18と傾斜面22とが連なっている。   As shown in FIG. 5B, six cut protrusions 21 are provided on the radial surface 18b constituting the wood pressing surface 18 at predetermined intervals in the circumferential direction. However, the number of the cut protrusions 21 is not limited to six illustrated, and can be an arbitrary number. As shown in FIG. 5C, each of the cut protrusions 21 protrudes from the radial surface 18b toward the radially outer side starting from the inner peripheral side of the radial surface 18b, that is, from the wood pressing surface 18. It has the inclined surface 22 inclined in the direction to leave | separate. As shown in FIG. 5D, a biting surface 23 that is substantially perpendicular to the wood pressing surface 18 is formed at both ends of the inclined surface 22 in the circumferential direction, that is, in the rotational direction. The surface 18 and the inclined surface 22 are connected.

それぞれの切り込み突起21は、皿タッピングねじ11を用いて横根太材10と木製の床板2とを締結する際に、テーパ面18aにより押し広げられるように塑性変形する床板2の一部をそのまま皿タッピングねじ11の径方向外方に向かわせることなく、皿タッピングねじ11の回転方向に移動させて、塑性変形された木製の床板2の一部を木材押し付け面18内に捕捉することになる。つまり、頭部13の回転により切り込み突起21は床板2の一部を切り取るとともに切り取った木材を頭部13の径方向外方に向かわせることなく、回転方向に移動させて木材押し付け面18内に取り込むことになる。また、切り取られなかった木材も回転方向に塑性変形されて径方向外方には向かうことなく、木材押し付け面18内に取り込まれる。   Each notch protrusion 21 is a part of the floor plate 2 that is plastically deformed so as to be spread by the tapered surface 18a when the horizontal joist 10 and the wooden floor plate 2 are fastened using the counter tapping screw 11. A part of the wooden floor plate 2 plastically deformed is captured in the wood pressing surface 18 by moving in the rotational direction of the counter tapping screw 11 without being directed radially outward of the tapping screw 11. That is, the cut protrusion 21 cuts off a part of the floor plate 2 by the rotation of the head 13 and moves the cut wood in the rotation direction without directing the cut wood outward in the radial direction of the head 13. Will be captured. Further, the wood that has not been cut is also plastically deformed in the rotational direction and taken into the wood pressing surface 18 without going outward in the radial direction.

皿タッピングねじ11を用いて床板2を横根太材10に締結するには、図3に示すように、横根太材10の上に床板2を配置する。次いで、図示しない電動ドリルなどを用いて床板2と横根太材10の側壁部10cとに、図3(A)に示すように下穴24,25を穿設する。この下穴24,25の内径は皿タッピングねじ11のねじ部12の呼び径よりも小径に設定される。   In order to fasten the floor board 2 to the horizontal joist 10 using the flat tapping screw 11, the floor board 2 is disposed on the horizontal joist 10 as shown in FIG. Next, as shown in FIG. 3 (A), pilot holes 24 and 25 are drilled in the floor board 2 and the side wall 10c of the horizontal joist 10 using an electric drill (not shown). The inner diameters of the pilot holes 24 and 25 are set to be smaller than the nominal diameter of the thread portion 12 of the counter tapping screw 11.

下穴24,25が穿設された後に、図4に示す皿タッピングねじ11を回転工具により床板2の表面側から横根太材10の側壁部10cにねじ止めすることになる。その際には、まず、皿タッピングねじ11はねじ部12が床板2の下穴24にねじ込まれて、床板2にねじ込まれることになる。ねじ込みが進行してねじ部12の先端が側壁部10cに到達すると、皿タッピングねじ11は金属製の横根太材10にドリルねじ部14がねじ切りつまり下穴25の一部を切除してねじ穴加工を行いながら、床板2と横根太材10にねじ止めされることになる。   After the prepared holes 24 and 25 are drilled, the flat tapping screw 11 shown in FIG. 4 is screwed to the side wall 10c of the horizontal joist 10 from the surface side of the floor board 2 with a rotary tool. In that case, first, the screw part 12 of the flat tapping screw 11 is screwed into the prepared hole 24 of the floor plate 2 and is screwed into the floor plate 2. When the screwing progresses and the tip of the screw portion 12 reaches the side wall portion 10c, the counter tapping screw 11 is cut into the metal horizontal joist 10 by the drill screw portion 14 by cutting a part of the lower hole 25, that is, a screw hole. It is screwed to the floor board 2 and the side joists 10 while processing.

ねじ止めの最終段階においては、頭部13の背面側の木材押し付け面18が木材製の床板2に接触することになり、テーパ面18aにより下穴24の床板表面側の縁部が径方向外方に押し広げられることになるが、このときには、頭部13の回転によって切り込み突起21が床板2を構成する木材繊維に食い込んでこれを回転方向に移動させるように塑性変形させるので、塑性変形された部分は木材押し付け面18に捕捉されることになり、木材繊維が頭部13の径方向外方からバリとなって突出することが防止される。さらに、切り込み突起21により床板2の一部は切断されるが切断された部分も回転方向に移動する力を受けて頭部13と床板2との間が外部にバリとなって突出することがない。したがって、皿タッピングねじ11のねじ込み操作が完了しても、床板2の表面には皿タッピングねじ11の頭部13の外周から木材のバリが突出することがなくなるので、全ての皿タッピングねじ11のねじ止め後に床板2の表面に突出したバリを除去するための仕上げ加工が不要となる。   In the final stage of screwing, the timber pressing surface 18 on the back side of the head 13 comes into contact with the timber floor plate 2, and the edge on the floor plate surface side of the prepared hole 24 is radially outside by the tapered surface 18 a. In this case, the cut protrusion 21 is plastically deformed so as to bite into the wood fibers constituting the floor board 2 and move in the rotational direction by the rotation of the head 13, so that it is plastically deformed. Therefore, the wood fiber is prevented from protruding as a burr from the outside of the head 13 in the radial direction. Further, a part of the floor board 2 is cut by the cut protrusions 21, but the cut part also receives a force that moves in the rotation direction, and the head 13 and the floor board 2 protrude outside as a burr. Absent. Therefore, even if the screwing operation of the counter tapping screw 11 is completed, no burrs of wood protrude from the outer periphery of the head 13 of the counter tapping screw 11 on the surface of the floor plate 2, so that all the counter tapping screws 11 are Finishing processing for removing burrs protruding from the surface of the floor plate 2 after screwing becomes unnecessary.

図6は従来の皿タッピングねじ11aを用いて床板2を横根太材10にねじ止めした場合を比較例として示す断面図であり、図6に示す場合には、皿タッピングねじ11aを用いて床板2を締結すると、皿タッピングねじ11aの頭部13と床板2の表面との間からバリ26が突出することになり、このバリ取り作業が不可避であったが、本発明の床構造においては、このようなバリ26の発生がなくなるので、床板2の締結作業を短時間で行うことが可能となった。   FIG. 6 is a cross-sectional view showing, as a comparative example, a case where the floor plate 2 is screwed to the horizontal joist 10 using a conventional flat tapping screw 11a. In the case shown in FIG. 6, the floor plate 2 is fixed using the flat tapping screw 11a. 2 is fastened, the burr 26 protrudes from between the head 13 of the counter tapping screw 11a and the surface of the floor plate 2, and this deburring work is unavoidable, but in the floor structure of the present invention, Since generation | occurrence | production of such a burr | flash 26 is lose | eliminated, it became possible to perform the fastening operation | work of the floor board 2 in a short time.

図3に示す場合には、横根太材10の上に床板2を配置するようにしているが、横根太材10の上に縦根太材9を配置してその上に床板2を皿タッピングねじ11により締結するようにしても良い。また、図示する場合には切り込み突起21を径方向面18bに設けているが、テーパ面18aに設けるようにしても同様のバリ捕捉効果を達成することができる。つまり、切り込み突起21をテーパ面18aと径方向面18bの少なくとも何れか一方に設ければ良い。
In the case shown in FIG. 3, the floor board 2 is arranged on the horizontal joist 10, but the vertical joist 9 is arranged on the horizontal joist 10 and the floor board 2 is placed on the floor joisting screw 10. 11 may be fastened. Further, in the illustrated case, the cut protrusion 21 is provided on the radial surface 18b, but the same burr capturing effect can be achieved even if it is provided on the tapered surface 18a. That is, the cut protrusions 21 may be provided on at least one of the tapered surface 18a and the radial surface 18b.

貨物自動車の一例としてのバンボディ車を示す斜視図である。It is a perspective view which shows the van body vehicle as an example of a truck. 図1のA−A線に沿う方向の縦断面図である。It is a longitudinal cross-sectional view of the direction in alignment with the AA of FIG. (A)は下穴が形成された状態の床板と横根太材の一部を示す拡大断面図であり、(B)は下穴に皿タッピングねじが締結された状態を示す拡大断面図である。(A) is an expanded sectional view showing a part of a floor board and a horizontal joist in a state where a pilot hole is formed, and (B) is an enlarged sectional view showing a state where a flat tapping screw is fastened to the pilot hole. . 床板を横根太材に締結するための皿タッピングねじを示す斜視図である。It is a perspective view which shows the flat tapping screw for fastening a floor board to a horizontal joist. (A)は図4の一部切り欠き正面図であり、(B)は図5(A)におけるB−B線に沿う拡大断面図であり、(C)は図5(B)におけるC−C線に沿う拡大断面図であり、(D)は図5(C)におけるD−D線に沿う矢視図である。(A) is a partially cutaway front view of FIG. 4, (B) is an enlarged cross-sectional view along the line BB in FIG. 5 (A), and (C) is a cross-sectional view of FIG. It is an expanded sectional view which follows a C line, and (D) is an arrow line view which follows a DD line in Drawing 5 (C). 従来のタッピングねじを用いて床板を横根材にねじ止めした場合を比較例として示す断面図である。It is sectional drawing which shows the case where the floor board is screwed to a horizontal root material using the conventional tapping screw as a comparative example.

符号の説明Explanation of symbols

1 コンテナ
2 床板
2a アンダーパン
3 前壁
4 後壁
5,6 側壁
7 天井壁
8 貨物室
9 縦根太材
10 横根太材
11 皿タッピングねじ
12 ねじ部
13 頭部
14 ドリルねじ部
15 表面
16 工具係合穴
17 フランジ
18 木材押し付け面
18a テーパ面
18b 径方向面
19,20 外周縁
21 切り込み突起
22 傾斜面
23 食い込み面
24,25 下穴
DESCRIPTION OF SYMBOLS 1 Container 2 Floor board 2a Underpan 3 Front wall 4 Rear wall 5,6 Side wall 7 Ceiling wall 8 Cargo compartment 9 Vertical joist 10 Horizontal joist 11 Countersunk tapping screw 12 Screw part 13 Head 14 Drill screw part 15 Surface 16 Tool staff Joint hole 17 Flange 18 Wood pressing surface 18a Tapered surface 18b Radial surface 19, 20 Outer peripheral edge 21 Cutting protrusion 22 Inclined surface 23 Biting surface 24, 25 Pilot hole

Claims (1)

貨物自動車の荷台を構成する複数本の金属製の根太材と、前記根太材の上に配置される木製板と、前記木製板を貫通して前記根太材にねじ結合されて前記木製板を前記根太材に締結する皿タッピングねじとを有する貨物自動車の床構造であって、
前記皿タッピングねじは、前記根太材にねじ結合するねじ部と、外周部にフランジが設けられ表面が平坦となるとともに前記ねじ部に一体に設けられ頭部とを有し、
前記頭部の背面側に、テーパ面と当該テーパ面の外周端から径方向に突出する径方向面とを有する木材押し付け面を形成し、
前記径方向面に径方向外方に向けて突出するように傾斜した傾斜面と、当該傾斜面の回転方向端に前記木材押し付け面に対してほぼ垂直となった食い込み面とを有する複数の切り込み突起を前記径方向面に設け、
前記テーパ面により外方に押し広げられた木製板の一部を前記切り込み突起により回転方向に移動させて前記木材押し付け面内に捕捉することを特徴とする貨物自動車の床構造。
A plurality of metal joists constituting a loading platform of a truck, a wooden board disposed on the joists, and screwed to the joists through the wooden boards, the wooden boards are A floor structure of a truck having a counter tapping screw fastened to a joist,
The countersunk tapping screw has a threaded portion which is screwed, and a head portion that is provided integrally with the threaded portion with the surface a flange is provided on the outer peripheral portion becomes flat on the joists material,
On the back side of the head, a wood pressing surface having a tapered surface and a radial surface protruding radially from the outer peripheral end of the tapered surface is formed,
A plurality of incisions having an inclined surface inclined so as to protrude radially outward from the radial surface, and a biting surface substantially perpendicular to the wood pressing surface at an end in a rotational direction of the inclined surface. Protrusions are provided on the radial surface,
Floor structure of freight vehicles, wherein the benzalkonium be captured a portion of the wooden board which is spread outwardly the timber pressing plane is moved in the rotational direction by the notch projection by the tapered surface.
JP2004083807A 2004-03-23 2004-03-23 Lorry floor structure Expired - Lifetime JP4199690B2 (en)

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JP4832163B2 (en) * 2006-05-26 2011-12-07 日本パワーファスニング株式会社 Self-drilling screw for gypsum board fastening
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