JPH0225049B2 - - Google Patents
Info
- Publication number
- JPH0225049B2 JPH0225049B2 JP59109121A JP10912184A JPH0225049B2 JP H0225049 B2 JPH0225049 B2 JP H0225049B2 JP 59109121 A JP59109121 A JP 59109121A JP 10912184 A JP10912184 A JP 10912184A JP H0225049 B2 JPH0225049 B2 JP H0225049B2
- Authority
- JP
- Japan
- Prior art keywords
- nut
- main body
- cylindrical part
- annular groove
- nut main
- 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 - Lifetime
Links
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000007769 metal material Substances 0.000 description 8
- 239000002184 metal Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 3
- 238000002788 crimping Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Valve Device For Special Equipments (AREA)
- Forging (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、かしめ強度に優れたクリンチナツト
に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a clinch nut with excellent crimping strength.
（従来の技術）
下型上にセツトされた金属板の上方からナツト
本体を打込み、金属板の打ち抜きとかしめとを同
時に行つてナツト本体を金属板に装着するように
したクリンチナツトは、溶接設備が必要なうえ仕
上がりもよくないウエルドナツトに代り広く使用
されているが、従来一般のクリンチナツトはナツ
ト本体の外方に小突起を備えたもので、この小突
起が下型により変形しつつ金属板の対応する部分
を押しつぶすことにより金属板にかしめられるも
のが普通であつた。ところがこのような従来のク
リンチナツトは金属板に対するかしめが数個所の
小突起の部分において行われるだけであるから、
かしめ後の剥離強度すなわちクリンチ力及び回転
トルク等によつて代表されるかしめ強度が小さい
ものであつた。また、特公昭43−14770号公報に
見られるように、角型のナツト主体部の下面中央
にねじ孔付きの内筒部を垂設するとともに該ナツ
ト主体部の下面周縁部には内周面を上拡がりのテ
ーパ面とした前記内筒部より短い外筒部を垂設し
て該内筒部と外筒部との間に環状溝を形成して、
金属材がナツト主体部の下面中央に垂設された内
筒部と下型の孔縁との間において剪断されて孔が
打ち抜かれるとともに、その周縁部の金属材が環
状溝の内部に変形圧入されるようにしたクリンチ
ナツトも提案されているが、回り止め機能が不充
分なためかしめ強度が小さく、大きい荷重を受け
る部分には用いることができないばかりか、角型
のナツト主体に前記したような内筒部や外筒部を
コイル材から圧造するには特殊なダイスが必要で
ダイス寿命も短く、コスト高となるという問題点
があつた。(Prior art) A clinch nut, in which the nut body is driven from above a metal plate set on a lower mold, and the nut body is attached to the metal plate by punching and caulking the metal plate at the same time, requires no welding equipment. It is widely used as an alternative to weld nuts, which are not necessary and have a poor finish, but conventional clinch nuts have a small projection on the outside of the nut body, and this small projection is deformed by the lower die and breaks the metal plate. They were usually caulked to a metal plate by pressing the corresponding parts. However, with such conventional clinch nuts, crimping against the metal plate is only performed at a few small protrusions.
The peel strength after caulking, that is, the caulking strength represented by clinching force, rotational torque, etc., was low. In addition, as seen in Japanese Patent Publication No. 43-14770, an inner cylindrical part with a screw hole is vertically provided in the center of the lower surface of the square nut main body, and an inner circumferential surface is provided on the periphery of the lower surface of the nut main body. an outer cylindrical portion shorter than the inner cylindrical portion having an upwardly expanding tapered surface is vertically provided to form an annular groove between the inner cylindrical portion and the outer cylindrical portion;
The metal material is sheared between the inner cylindrical part vertically installed at the center of the lower surface of the nut main body and the hole edge of the lower die to punch out a hole, and the metal material at the periphery is deformed and press-fitted into the annular groove. Clinch nuts have also been proposed, but their clinching strength is low due to their insufficient anti-rotation function, and they cannot be used in areas that receive large loads. There were problems in that special dies were required to forge the inner and outer cylinders from coil material, which shortened the life of the dies and increased costs.
（発明が解決しようとする課題）
本発明は、前記したような従来のクリンチナツ
トの問題点を解決し、クリンチ力及び回転トルク
等によつて代表されるかしめ強度が大きくて大き
い荷重を受ける部分にも用いることができ、しか
も、コイル材から容易に圧造できて安価に提供で
きるクリンチナツトを提供することを目的とした
ものである。(Problems to be Solved by the Invention) The present invention solves the problems of the conventional clinch nuts as described above, and has a high caulking strength represented by clinching force and rotational torque, and is suitable for parts that receive large loads. The object of the present invention is to provide a clinch nut that can be easily formed from a coil material and can be provided at a low cost.
（課題を解決するための手段）
このような課題を解決しようとする本発明は、
ナツト主体部の下面中央にねじ孔付きの内筒部を
垂設するとともに該ナツト主体部の下面周縁部に
は内周面を上拡がりのテーパ面とした前記内筒部
より短い外筒部を垂設して該内筒部と外筒部との
間に環状溝を形成したクリンチナツトにおいて、
前記ナツト主体部を円盤状として前記環状溝の所
要内面に凹部または凸部が所要間隔下に適数個配
設された回り止め部を形成するとともに、前記外
筒部の下面に放射状の凹凸を形成したことを特徴
とするものである。(Means for Solving the Problems) The present invention that attempts to solve these problems is as follows:
An inner cylindrical part with a screw hole is provided vertically at the center of the lower surface of the nut main body, and an outer cylindrical part shorter than the inner cylindrical part whose inner peripheral surface is an upwardly expanding tapered surface is provided on the periphery of the lower surface of the nut main body. In a clinch nut that is vertically disposed to form an annular groove between the inner cylinder part and the outer cylinder part,
The main body of the nut is shaped like a disk, and a rotation preventing portion is formed on the inner surface of the annular groove with an appropriate number of concave portions or convex portions arranged at a predetermined interval, and radial irregularities are formed on the lower surface of the outer cylindrical portion. It is characterized by the fact that it has been formed.
（実施例）
次に本発明を図示の実施例について詳細に説明
する。(Embodiments) Next, the present invention will be described in detail with reference to illustrated embodiments.
１は円盤状のナツト主体部、２はその下面中央
に垂設されたねじ孔３付きの内筒部２、４はナツ
ト主体部１の下面周縁部に垂設された外筒部であ
る。外筒部４は内筒部２よりも短く、その内周面
５はねじ孔３の軸線に対して15度程度の角度をな
す上拡がりのテーパ面とされている。６は内筒部
２と外筒部４との間に形成される環状溝であり、
該環状溝６には回り止め部として凹部７または凸
部８が適数個配設されている。即ち、第１図に示
される第１の実施例においては環状溝６の上面す
なわち溝底に放射方向に回り止め部として凸部８
が３個配設されており、また、第２図、第３図に
示される第２、第３の実施例では環状溝６の一側
面に回り止め部としての円筒面状の凸部８を上下
方向に３〜６個配設するとともに該環状溝６の他
側面をなす外筒部４の内周面５にも回り止め部と
して凹部７が上下方向に３〜６個配設されてい
る。なお、これらの凹部７及び凸部８の形状は上
記した以外にも種々な変形が可能である。また、
９は外筒部４の下面に形成される放射状の凹凸９
であつて、該放射状の凹凸９は打ち込み時に金属
板に食い込んで優れた回り止め機能を発揮させる
ために必須のものである。 Reference numeral 1 designates a disk-shaped nut main body, and reference numeral 2 designates an inner cylindrical part 2 and 4 with a screw hole 3 provided vertically at the center of the lower surface of the nut main body 1, and an outer cylindrical part vertically provided at the lower peripheral edge of the nut main body 1. The outer cylindrical part 4 is shorter than the inner cylindrical part 2, and its inner circumferential surface 5 is an upwardly expanding tapered surface forming an angle of about 15 degrees with respect to the axis of the screw hole 3. 6 is an annular groove formed between the inner cylinder part 2 and the outer cylinder part 4;
An appropriate number of concave portions 7 or convex portions 8 are provided in the annular groove 6 as rotation preventing portions. That is, in the first embodiment shown in FIG.
In the second and third embodiments shown in FIGS. 2 and 3, a cylindrical convex portion 8 is provided on one side of the annular groove 6 as a rotation stopper. Three to six concave portions 7 are disposed in the vertical direction, and three to six concave portions 7 are disposed in the vertical direction as anti-rotation portions on the inner circumferential surface 5 of the outer cylinder portion 4 forming the other side of the annular groove 6. . Note that the shapes of the recesses 7 and the projections 8 can be modified in various ways other than those described above. Also,
9 is a radial unevenness 9 formed on the lower surface of the outer cylinder part 4
The radial irregularities 9 are essential for biting into the metal plate during driving and exhibiting an excellent anti-rotation function.
（作用）
このように構成されたもので、第４図に示され
るように、下型２０の上面に金属材３０をセツト
してクリンチナツト打込工具のパンチ２１により
金属材３０の上方から打込みを行えば、金属材３
０はナツト主体部１の下面中央に垂設された内筒
部２と下型２０の孔縁２２との間において剪断さ
れて孔が打ち抜かれるとともに、その周縁部の金
属材３０は内筒部２とナツト主体部１の下面周縁
部に垂設された前記内筒部２よりも短い外筒部４
との間の環状溝６の内部に下型２０の環状突起２
３により変形しつつ圧入されるものであり、この
内筒部４の内周面５が上拡がりのテーパ面とされ
ているので非常に大きいクリンチ力が得られるこ
ととなるが、特に、本発明ではこの環状溝６の内
面に回り止め部としての凹部７や凸部８が所要間
隔下に適数個配設されているので、環状溝６内に
圧入された金属材３０はこれらの凹部７や凸部８
に食い込むこととなるうえに、外筒部４の下面に
形成されている放射状の凹凸９が金属材３０の上
面に食い込むこととなるので、極めて大きい回転
トルクを得ることができる。このことは、外筒部
４の直径が17mm、内筒部２の外径が９mm、環状溝
６の幅が２mmで外筒部４の下面までの溝の深さが
1.5mmの第１図に示される形状のクリンチナツト
を厚み1.6mmの鋼板（SPCC）に打込んだものは、
クリンチ力425Kg、回転トルク225Kg−cmという優
れたかしめ強度が確認されており、また、同寸法
の第２図に示される形状のクリンチナツトも、ク
リンチ力250Kg、回転トルク300Kg−cmのかしめ強
度が確認されており、これらの値は略同寸法のナ
ツト主体部の下面中央にねじ孔付のの内筒部を垂
設するとともに該ナツト主体部の下面周縁部に脚
端が平滑な外筒部を垂設して該内筒部と外筒部と
の間に回り止めのない環状溝を形成した従来のク
リンチナツトのクリンチ力が約120Kg、回転トル
クが約200Kg−cmであつたのに比べはるかに優れ
たもので、大きい荷重を受ける部分には用いるこ
とができるものである。(Function) With this structure, as shown in FIG. 4, the metal material 30 is set on the upper surface of the lower mold 20, and the metal material 30 is driven from above using the punch 21 of the clinch nut driving tool. If done, metal material 3
0 is sheared between the inner cylindrical part 2 vertically disposed at the center of the lower surface of the nut main body 1 and the hole edge 22 of the lower mold 20, and a hole is punched out, and the metal material 30 on the periphery of the hole is punched out. 2 and an outer cylindrical portion 4 that is shorter than the inner cylindrical portion 2 and is vertically provided on the lower peripheral edge of the nut main body 1.
The annular protrusion 2 of the lower die 20 is inside the annular groove 6 between the
3, the inner circumferential surface 5 of the inner cylindrical portion 4 is formed into an upwardly expanding tapered surface, so that a very large clinching force can be obtained. Since an appropriate number of concave portions 7 and convex portions 8 are arranged at required intervals on the inner surface of this annular groove 6 as anti-rotation portions, the metal material 30 press-fitted into the annular groove 6 is inserted into these concave portions 7. and convex part 8
In addition, the radial unevenness 9 formed on the lower surface of the outer cylindrical portion 4 bites into the upper surface of the metal material 30, so that an extremely large rotational torque can be obtained. This means that the diameter of the outer cylinder part 4 is 17 mm, the outer diameter of the inner cylinder part 2 is 9 mm, the width of the annular groove 6 is 2 mm, and the depth of the groove to the bottom surface of the outer cylinder part 4 is 17 mm.
A 1.5mm clinch nut with the shape shown in Figure 1 is driven into a 1.6mm thick steel plate (SPCC).
Excellent clinching strength has been confirmed with a clinching force of 425 kg and a rotational torque of 225 kg-cm.Also, the clinching nut with the same dimensions and shape shown in Figure 2 has been confirmed to have a clinching force of 250 kg and a rotational torque of 300 kg-cm. These values are obtained by installing an inner cylinder with a screw hole vertically in the center of the lower surface of the nut main body of approximately the same size, and an outer cylinder with smooth leg ends around the lower surface of the nut main body. This is far greater than the clinching force of a conventional clinch nut, which is vertically installed and forms a non-rotating annular groove between the inner and outer cylinder parts, which has a clinching force of approximately 120 kg and a rotational torque of approximately 200 kg-cm. It is an excellent product and can be used in parts that receive large loads.
（発明の効果）
本発明は以上の実施例による説明からも明らか
なように、ナツト主体部の下面中央にねじ孔付き
の内筒部を垂設するとともに該ナツト主体部の下
面周縁部に外筒部を垂設して該内筒部と外筒部と
の間に環状溝を形成したクリンチナツトにおい
て、環状溝の内面に凹部または凸部が所要間隔下
に適数個配設された回り止め部を形成するととも
に、前記外筒部の下面に放射状の凹凸を形成する
ことによりクリンチ力及び回転トルク等のかしめ
強度を著しく向上させたものであり、ナツト主体
部が円盤状であるため、ナツト主体部を角型とし
た場合とは異なりコイル材から安価なダイスで容
易に量産できるうえに打ち込み力も小さくてすむ
利点と相俟ち、従来のクリンチナツトの問題点を
解決したものとして業界に寄与するところ極めて
大なものがある。(Effects of the Invention) As is clear from the above description of the embodiments, the present invention has an inner cylinder with a threaded hole vertically disposed in the center of the lower surface of the nut main body, and an outer cylinder at the lower peripheral edge of the nut main body. A clinch nut in which a cylindrical part is vertically disposed and an annular groove is formed between the inner cylindrical part and the outer cylindrical part, and an appropriate number of concave parts or convex parts are arranged at a required interval on the inner surface of the annular groove. In addition, by forming radial irregularities on the lower surface of the outer cylindrical portion, the clinching force and rotational torque, etc., are significantly improved. Unlike the case where the main body is square, it can be easily mass-produced from coiled material using inexpensive dies, and the driving force is small, which together contribute to the industry as a solution to the problems of conventional clinch nuts. There is something very big here.
第１図は本発明の第１の実施例を示す一部切欠
斜視図、第２図は本発明の第２の実施例を示す一
部切欠斜視図、第３図は本発明の第３の実施例を
示す底面図、第４図は本発明に係るクリンチナツ
トの打込み状態を示す一部切欠正面図である。
１：ナツト主体部、２：内筒部、３：ねじ孔、
４：外筒部、５：内周面、６：環状溝、７：凹
部、８：凸部、９：放射状の凹凸。
FIG. 1 is a partially cutaway perspective view showing a first embodiment of the present invention, FIG. 2 is a partially cutaway perspective view showing a second embodiment of the present invention, and FIG. 3 is a partially cutaway perspective view showing a third embodiment of the present invention. FIG. 4 is a bottom view showing the embodiment, and a partially cutaway front view showing the driving state of the clinch nut according to the present invention. 1: Nut main part, 2: Inner cylinder part, 3: Screw hole,
4: Outer cylinder part, 5: Inner peripheral surface, 6: Annular groove, 7: Concave part, 8: Convex part, 9: Radial unevenness.
Claims (1)
内筒部２を垂設するとともに該ナツト主体部１の
下面周縁部には内周面５を上拡がりのテーパ面と
した前記内筒部２より短い外筒部４を垂設して該
内筒部２と外筒部４との間に環状溝６を形成した
クリンチナツトにおいて、前記ナツト主体部１を
円盤状として前記環状溝６の所要内面に凹部また
は凸部が所要間隔下に適数個配設された回り止め
部を形成するとともに、前記外筒部４の下面に放
射状の凹凸９を形成したことを特徴とするクリン
チナツト。1. An inner cylindrical part 2 with a screw hole 3 is vertically provided in the center of the lower surface of the nut main body 1, and the inner cylindrical part has an inner circumferential surface 5 that is an upwardly expanding tapered surface at the peripheral edge of the lower surface of the nut main body 1. In a clinch nut in which an outer cylindrical part 4 shorter than 2 is vertically disposed and an annular groove 6 is formed between the inner cylindrical part 2 and the outer cylindrical part 4, the length of the annular groove 6 is determined by forming the nut main body 1 into a disk shape. A clinch nut characterized in that a rotation preventing portion is formed on the inner surface with a suitable number of concave portions or convex portions arranged at required intervals, and radial irregularities 9 are formed on the lower surface of the outer cylindrical portion 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10912184A JPS60252814A (en) | 1984-05-29 | 1984-05-29 | Clinch nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10912184A JPS60252814A (en) | 1984-05-29 | 1984-05-29 | Clinch nut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60252814A JPS60252814A (en) | 1985-12-13 |
| JPH0225049B2 true JPH0225049B2 (en) | 1990-05-31 |
Family
ID=14502085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10912184A Granted JPS60252814A (en) | 1984-05-29 | 1984-05-29 | Clinch nut |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60252814A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002032701A1 (en) * | 2000-10-11 | 2002-04-25 | Toyo Tire & Rubber Co., Ltd. | Strut mount |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3491279B2 (en) | 2000-04-18 | 2004-01-26 | 本田技研工業株式会社 | Caulking nut and manufacturing method thereof |
| DE102005024220A1 (en) * | 2005-05-25 | 2006-11-30 | Profil Verbindungstechnik Gmbh & Co. Kg | Method for producing hollow body elements, hollow body element, assembly component, progressive composite tool for producing hollow body elements and rolling mill |
| JP5143678B2 (en) * | 2008-09-16 | 2013-02-13 | セキ工業株式会社 | Caulking screw and caulking screw joint structure |
| JP7073180B2 (en) * | 2018-04-17 | 2022-05-23 | ボーセイキャプティブ株式会社 | Cold heading method for caulking nuts and caulking nuts |
-
1984
- 1984-05-29 JP JP10912184A patent/JPS60252814A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002032701A1 (en) * | 2000-10-11 | 2002-04-25 | Toyo Tire & Rubber Co., Ltd. | Strut mount |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60252814A (en) | 1985-12-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |