JPH024245Y2 - - Google Patents
Info
- Publication number
- JPH024245Y2 JPH024245Y2 JP1981173522U JP17352281U JPH024245Y2 JP H024245 Y2 JPH024245 Y2 JP H024245Y2 JP 1981173522 U JP1981173522 U JP 1981173522U JP 17352281 U JP17352281 U JP 17352281U JP H024245 Y2 JPH024245 Y2 JP H024245Y2
- Authority
- JP
- Japan
- Prior art keywords
- screw
- extrusion hole
- hole
- metal plate
- extrusion
- 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.)
- Expired
Links
- 238000001125 extrusion Methods 0.000 claims description 23
- 239000002184 metal Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Connection Of Plates (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Description
【考案の詳細な説明】
本考案は金属板の押出孔の改良に関するもので
ある。[Detailed Description of the Invention] The present invention relates to an improvement of extrusion holes in a metal plate.
更に詳説すると、本考案は金属板、特に板金部
品をプレス加工して得られる押出孔（バーリング
孔ともいう）において、該押出孔に捩じ込まれる
タツピンネジ或は該押出孔に刻設される雌ネジに
捩じ込まれる雄ネジとの螺合固定強度を強固にす
るための押出孔の形状の改良に関するものであ
る。 More specifically, the present invention provides an extrusion hole (also referred to as a burring hole) obtained by pressing a metal plate, particularly a sheet metal part, with a tatsupin screw screwed into the extrusion hole or a female hole carved in the extrusion hole. This invention relates to an improvement in the shape of an extrusion hole in order to strengthen the strength of screwing and fixing it with a male screw that is screwed into the screw.
従来、第１図に示すように薄板厚の金属板１の
プレス部品では押出孔２のネジ溝とナベ頭ビス３
のネジ溝との係合を多く取つてネジ締め強度を上
げるためにバーリング孔加工２をしている。一
方、ビス３の首下不完全ネジ部３ａの寸法Ａは
JISで規定されているようにネジ山の２山以内と
なつていた、たとえばM3型のピツチ0.5mmのビス
ではＡが１mm以内と言うことになる。故に厚さ１
mm以上の座金等の部材をはさんでビス止めする時
にはＡは無視できるが、第１図のように何もはさ
まず、あるいは１mm以下の薄い部材をはさんでビ
ス止めしたい時にＡが無視できなくなる。すなわ
ち、ビス３の首下不完全ネジ部３ａに対応する押
出孔２のネジ山２ａは潰れてしまつてネジの螺合
に役立たなくなり、こうして押出孔２のネジ山が
少なくなると、ビス３の捩じ込み回転力を強くし
た場合、押出孔２の突出部４の内壁に設けられた
ネジ山全部が潰れやすくなり、所謂バカネジとな
り、ネジ締付作用がなくなつてしまう。 Conventionally, as shown in FIG.
The burring hole is machined 2 in order to increase the engagement with the thread groove and increase the screw tightening strength. On the other hand, the dimension A of the incompletely threaded portion 3a under the neck of the screw 3 is
For example, for an M3 type screw with a pitch of 0.5mm, which has two threads or less as specified by JIS, A must be within 1mm. Therefore thickness 1
A can be ignored when screwing parts such as washers of mm or more in size, but A can be ignored when you want to clamp something with nothing in between, or a thin member of 1 mm or less, as shown in Figure 1. become unable. That is, the screw thread 2a of the extrusion hole 2 corresponding to the incomplete threaded portion 3a under the neck of the screw 3 is crushed and becomes useless for screwing the screw. If the tightening rotational force is increased, the entire screw thread provided on the inner wall of the protruding portion 4 of the extrusion hole 2 will be easily crushed, resulting in a so-called stupid screw, and the screw tightening effect will be lost.
本考案は斯る問題を解決できる押出孔を提供せ
んとするものである。次に本考案について第２図
と共に説明する。すなわち、本考案は薄い板厚
（例えば0.8mmの亜鉛鋼板）の金属板１の押出孔部
２に該押出孔の中心に向つて傾斜する直線傾斜状
の面取り内側面５と該内側面に対向する所定長の
直線傾斜状外側面５′を設け、傾斜状内側面５の
深さＢをビス３の首下不完全ネジ部３ａの寸法Ａ
よりも大きくして、ビス３のネジ山との螺合固定
強度を強固にしている。尚、破線で示した図はサ
ラ頭のビス６を示し、余り固定強度を必要とせ
ず、且つネジ頭を低くしたい場合に使用するのに
都合がよい。この時にはh1はh1＞h2となる。また
上述のビスの代りにタツピンネジを使用する場合
には、押出孔２の内壁にネジ溝を刻設する必要は
ない。 The present invention aims to provide an extrusion hole that can solve this problem. Next, the present invention will be explained with reference to FIG. That is, the present invention provides an extrusion hole portion 2 of a metal plate 1 having a thin plate thickness (for example, a 0.8 mm galvanized steel plate) with a linearly sloped chamfered inner surface 5 inclined toward the center of the extrusion hole, and a chamfered inner surface 5 facing the inner surface. A straight inclined outer surface 5' of a predetermined length is provided, and the depth B of the inclined inner surface 5 is determined by the dimension A of the incompletely threaded portion 3a under the neck of the screw 3.
It is made larger than that to strengthen the strength of screwing and fixing it with the screw thread of the screw 3. Incidentally, the figure indicated by the broken line shows a screw 6 with a flat head, which is convenient for use when a high fixing strength is not required and the screw head is desired to be low. At this time, h 1 becomes h 1 > h 2 . Further, when a tatsupin screw is used instead of the above-mentioned screw, there is no need to carve a thread groove on the inner wall of the extrusion hole 2.
尚、ビス３の首下不完全ネジ部の長さが短かい
場合には直線傾斜状の面取り内側面５を設けるだ
けでよく、必ずしも直線傾斜状の外側面５′を設
けなくてもよい。また、第２図図示の加工をする
には、先ず図示の如く面取り状に絞つた後、通常
のバーリング加工をしたり、逆にバーリング加工
した後、面取り状に絞つてもよい。更にまた同時
にこれら二つの加工を施してもよい。 Incidentally, when the length of the incompletely threaded portion under the neck of the screw 3 is short, it is sufficient to provide only the linearly inclined chamfered inner surface 5, and it is not necessarily necessary to provide the linearly inclined outer surface 5'. Further, in order to perform the processing shown in FIG. 2, the material may first be drawn into a chamfered shape as shown and then subjected to normal burring, or conversely, the material may be burred and then drawn into a chamfered shape. Furthermore, these two processes may be performed simultaneously.
このように本考案の押出孔によればビスやタツ
ピンネジの首下不完全ネジ部による押出孔内壁の
ネジ溝潰れがなくなるので、螺合締付強度を強く
保つことができる。 As described above, according to the extrusion hole of the present invention, there is no collapse of the thread groove on the inner wall of the extrusion hole due to the incompletely threaded portion under the head of a screw or tatsupin screw, so that the screw tightening strength can be maintained strongly.
第１図は従来の金属板の押出孔の形状を示す断
面図、第２図は本考案の金属板の押出孔の形状を
示す断面図である。
１……金属板、２……押出孔、３……ナベ頭ビ
ス、３ａ……首下不完全ネジ部、４……突出部、
５，５′……直線傾斜状の面取り内側面および直
線傾斜状外側面。
FIG. 1 is a sectional view showing the shape of an extrusion hole in a conventional metal plate, and FIG. 2 is a sectional view showing the shape of an extrusion hole in a metal plate according to the present invention. 1... Metal plate, 2... Extrusion hole, 3... Pan head screw, 3a... Incomplete threaded part under the neck, 4... Protrusion part,
5, 5'...A linearly inclined chamfered inner surface and a linearly inclined outer surface.
Claims (1)
孔の中心に向つて傾斜する直線傾斜状の面取り内
側面を設けると共に該内側面に連接して複数個の
ネジ山の刻設される突出部を設け、前記直線傾斜
状の面取り内側面の深さ及び径を前記押出孔に捩
じ込まれるタツピンネジ或は前記押出孔の内壁面
に刻設されたネジ孔に捩じ込まれる雄ネジの首下
不完全ネジ部の寸法より大きくして、該タツピン
ネジ或は該雄ネジと押出孔との螺合固定強度を強
固にしてなる金属板の押出孔。 In an extrusion hole of a metal plate, the extrusion hole portion is provided with a linearly sloped chamfered inner surface that slopes toward the center of the extrusion hole, and a protrusion that is connected to the inner surface and has a plurality of screw threads carved therein. The depth and diameter of the linearly sloping chamfered inner surface are determined by the depth and diameter of a tatsupin screw screwed into the extrusion hole or a male screw screwed into a screw hole carved in the inner wall surface of the extrusion hole. An extrusion hole in a metal plate having a dimension larger than that of an incomplete threaded portion under the neck to strengthen the screwing strength between the tut pin screw or the male screw and the extrusion hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17352281U JPS5876330U (en) | 1981-11-20 | 1981-11-20 | metal plate extrusion hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17352281U JPS5876330U (en) | 1981-11-20 | 1981-11-20 | metal plate extrusion hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5876330U JPS5876330U (en) | 1983-05-23 |
| JPH024245Y2 true JPH024245Y2 (en) | 1990-01-31 |
Family
ID=29965388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17352281U Granted JPS5876330U (en) | 1981-11-20 | 1981-11-20 | metal plate extrusion hole |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5876330U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007326455A (en) * | 2006-06-07 | 2007-12-20 | Takata Corp | Seat belt position adjusting device and seat belt device equipped therewith |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5409230B2 (en) * | 2009-09-18 | 2014-02-05 | パナソニック株式会社 | lighting equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS455314Y1 (en) * | 1965-04-24 | 1970-03-13 | ||
| JPS50775U (en) * | 1973-05-01 | 1975-01-07 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58169741U (en) * | 1982-05-06 | 1983-11-12 | 株式会社川崎製作所 | Improvement of mounting screw holes in ultra-thin plate chassis for car radios |
-
1981
- 1981-11-20 JP JP17352281U patent/JPS5876330U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS455314Y1 (en) * | 1965-04-24 | 1970-03-13 | ||
| JPS50775U (en) * | 1973-05-01 | 1975-01-07 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007326455A (en) * | 2006-06-07 | 2007-12-20 | Takata Corp | Seat belt position adjusting device and seat belt device equipped therewith |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5876330U (en) | 1983-05-23 |
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