JPWO2020064910A5

JPWO2020064910A5 -

Info

Publication number: JPWO2020064910A5
Application number: JP2021516909A
Authority: JP
Publication date: 2022-09-29
Anticipated expiration: 2039-09-26

Description

本発明は、工具係合輪郭を有する頭部と頭部から遠ざかる方向を向く自由端を有する胴部とを備えた高強度ねじに関する。ねじ山を有するねじ区画が、上記胴部に配置され、そのねじ山は、メートル系ＩＳＯねじ山又はインチ系ねじ山として形成されている。上部頭部及び上記胴部は、実質的に別々の部品として形成されている。上記頭部は、軸方向力伝達要素及びトルク伝達要素を備えている半径方向内側に配置された結合用凹部を有する。上記胴部は、その外周の半径方向外側に配置され、軸方向の力伝達対応要素及びトルク伝達対応要素を備える結合用要素を有している。言い換えれば、上記結合用要素は、上記胴部を半径方向外側に区切る上記胴部の一部分を形成しうる。上記結合用要素は、上記結合用凹部と係合する。換言すれば、上記結合用要素は、上記結合用凹部内に置かれた上記胴部の上記部分でありうる。上記頭部が上記胴部に対して最終的な位置又は意図された位置をとった状態、特に組み立てられた状態は決定的である。上記軸方向力伝達要素及び上記軸方向力伝達対応要素は、上記胴部に対する上記頭部の、上記胴部の自由端から遠ざかる方向への軸方向並進運動が、阻止される方法で、圧入されて結合されるように、設計及び配置されている。上記トルク伝達要素と上記トルク伝達対応要素は、上記胴部に対する上記頭部の、ねじ山の締付け方向への回転運動が、阻止される方法で、結合されるように設計及び配置されている。
The present invention relates to a high-strength screw having a head with a tool-engaging contour and a body with a free end facing away from the head. A threaded section having a thread is disposed on the body, the thread being formed as a metric ISO thread or an inch thread. The upper head and the body are formed as substantially separate parts. The head has a radially inwardly arranged coupling recess with an axial force transmission element and a torque transmission element. The barrel has coupling elements disposed radially outwardly of its outer circumference and comprising axial force transmission counterparts and torque transmission counterparts. In other words, the coupling element may form a portion of the body radially outwardly delimiting the body. The coupling element engages the coupling recess. In other words, the coupling element can be the portion of the barrel placed in the coupling recess. The final or intended position of the head relative to the torso, especially the assembled state, is decisive. The axial force transmission element and the axial force transmission counterpart element are press fit in such a way that axial translational movement of the head relative to the barrel in a direction away from the free end of the barrel is prevented. designed and arranged to be connected The torque transmission element and the torque transmission counterpart element are designed and arranged so that they are coupled in such a way that rotational movement of the head relative to the barrel in the tightening direction of the threads is prevented.

トルク伝達要素及びトルク伝達対応要素は、圧入されて結合されるように設計され配置されうる。そのような結合は、特に、トルク伝達要素及びトルク伝達対応要素がポリゴン、マルチトゥース、マルチラウンド、又はスターの形状タイプに属するような方法で実現されうる。ただし、所望の結合を提供する別の幾何学的構造も可能である。一例としては節（knurl）である。ただし、別のタイプのトルク伝達要素を選択することも可能である。１つの可能性は摩擦接続部である。これは、特に負の余裕度適合部（negative-allowance fit）という意味において実現されうる。
The torque transmission element and torque transmission counterpart element may be designed and arranged to be press -fitted together. Such coupling can be realized in particular in such a way that the torque transmission elements and torque transmission counterparts belong to polygonal, multi-tooth, multi-round or star shape types. However, other geometries that provide the desired coupling are possible. An example is a knurl. However, it is also possible to choose another type of torque transmission element. One possibility is a friction connection. This can be realized especially in the sense of a negative-allowance fit.

軸方向力伝達要素９及び軸方向力伝達対応要素１２は、胴部３に対する頭部２の、胴部３の自由端５から遠ざかる方向への軸方向並進運動を、阻止するように、圧入されて結合され、且つ、配置されている。上記トルク伝達要素１０及び上記トルク伝達対応要素１３は、胴部３に対する頭部２の、ねじ７の締め付け方向への回転運動が、阻止されるようになる方法で、結合されるように、設計され配置されている。この場合、この結合は、形状適合方式で行われる。しかし、トルク伝達の別のタイプ－例えば力の伝達又は摩擦による係合－も可能である。
The axial force transmission element 9 and the axial force transmission counterpart element 12 are press -fitted so as to prevent axial translational movement of the head 2 relative to the barrel 3 away from the free end 5 of the barrel 3. are connected and arranged. The torque transmission element 10 and the torque transmission counterpart element 13 are designed to be coupled in such a way that rotational movement of the head 2 relative to the body 3 in the tightening direction of the screw 7 is prevented. are placed. In this case, the connection is made in a form-fitting manner. However, other types of torque transmission are also possible, such as transmission of force or engagement by friction.

Claims

A high-strength screw (1),
a head (2) having a tool engaging contour (4);
a torso (3) having a free end (5) facing away from said head (2);
with
A threaded section (6) with a thread (7) is arranged in said body (3), said thread (7) being formed as a metric ISO thread or an inch thread,
said head (2) and said torso (3) are formed as substantially separate parts,
said head (2) has a radially inwardly arranged coupling recess (8) with an axial force transmission element (9) and a torque transmission element (10);
said barrel (3) has a coupling element (11) located radially outside its circumference and comprising an axial force transmission corresponding element (12) and a torque transmission corresponding element (13);
said coupling element (11) is engaged in said coupling recess (8);
Said axial force transmission element (9) and said axial force transmission counterpart element (12) extend from said head (2) relative to said body (3) from the free end (5) of said body (3). designed and arranged to be press -fitted and coupled in such a way that axial translation in the away direction is or will be prevented, especially non-releasably,
In the torque transmission element (10) and the torque transmission corresponding element (13), the rotational movement of the head (2) with respect to the body (3) in the tightening direction of the thread (7) is caused by friction. designed and arranged to be joined in such a way that it will be blocked or will be blocked by friction;
The high-strength screw (1).

Said coupling recess (8) is stepped and has a first portion (14) with a first inner diameter (15) and a second portion (16) with a second inner diameter (17). and said first inner diameter (15) is greater than said second inner diameter (17), and said second portion (16) is greater than said first portion (14) of said barrel (3). High-strength screw (1) according to claim 1, arranged near the free end (5).

High-strength screw (1) according to claim 2, wherein said second part (16) forms said axial force transmission element (9) in the sense of an axial stop.

Said coupling element (11) forms an axial counterpart stop corresponding to said axial stop, the outer diameter of which is greater than the outer diameter of said body (3) and said coupling recess (8). High strength screw (1) according to claim 3, which is larger than said second inner diameter (17) of .

High-strength screw (1) according to any one of claims 2 to 4, wherein said first portion (14) forms said torque transmitting element (10).

High-strength screw (1) according to any one of claims 2 to 5, wherein said second part (16) forms said torque transmitting element (10).

The high-strength screw according to any one of claims 1 to 6, wherein said torque transmission element (10) and said torque transmission counterpart element (13) are designed and arranged to be press -fitted and coupled. (1).

The torque transmission element (10) and the torque transmission corresponding element (13) also prevent the rotational movement of the head (2) relative to the body (3) in the direction of loosening the thread (7). A high-strength screw (1) according to any one of claims 1 to 7 , designed and arranged to be joined in such a way that

Said torque transmission element (10) and said torque transmission corresponding element (13) determine the maximum tightening torque of the screw (1) and, if the maximum tightening torque is exceeded, said 9. Formed in such a way that it no longer hinders the rotational movement of the head (2) in the tightening direction of the thread (7). High strength screws (1).

High tensile strength according to any one of the preceding claims, wherein the trunk (3) is made of high-strength steel or fiber composite and the head (2) is made of high-strength steel or fiber composite. screw (1).

Forming for mechanically producing a high-strength screw (1), in particular said high-strength screw (1) according to any one of claims 1 to 10, from a head blank and a body blank (19) A method comprising the steps of:
- the head (2) of the screw (1) has a coupling recess (8) arranged radially inwardly, comprising an axial force transmission element (9) and a torque transmission element (10), forming the head blank in a forming tool in a manner to be manufactured;
- attaching the head (2) to the torso blank (19) using the coupling recess (8);
- a barrel (3) having coupling elements (11) arranged radially outward on its circumference and comprising axial force transmission corresponding elements (12) and torque transmission corresponding elements (13); forming a portion of said barrel blank (19) in a forming tool in a manner that produces
- the head (2) and the body (3) are moved by translational movement of the head (2) in such a way that the coupling element (11) is press -fitted into the coupling recess (8); to join with
encompassing
The molding method described above.

Steps below:
- before said mounting step, shaping said head blank in a forming tool such that a tool engagement contour (4) is created; and/or after said joining step, said body (3); said head (2) to said body (3) so as to prevent axial translational movement of said head (2) relative to said body (3) in the direction of said free end (5) of said body (3) to fix,
further characterized by
Said forming is in each case cold forming, and/or shaping of said portion of said body blank (19) occurs by means of a translational punch (21), and/or said body blank (19) is , held by clamps (20) during molding,
The molding method according to claim 11.