JPS6179310U

JPS6179310U -

Info

Publication number: JPS6179310U
Application number: JP16293584U
Authority: JP
Priority date: 1984-10-26
Filing date: 1984-10-26
Publication date: 1986-05-27

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の一実施例を示す断面図、第２
図Ａ，Ｂは同上実施例の要部断面図、第２図Ｃは
同上実施例の要部拡大断面図、第３図Ａ，Ｂは従
来例を示す断面図、第４図Ａ，Ｂは他の従来例を
示す断面図である。１，２…ヘリコイド部材、１ａ，２ａ…ヘリコ
イドネジ、２ｃ…無効ネジ部。 Fig. 1 is a sectional view showing one embodiment of the present invention;
Figures A and B are sectional views of essential parts of the above embodiment, Figure 2 C is an enlarged sectional view of essential parts of the above embodiment, Figures 3 A and B are sectional views of the conventional example, and Figures 4 A and B are sectional views of the conventional example. FIG. 3 is a sectional view showing another conventional example. 1, 2... Helicoid member, 1a, 2a... Helicoid screw, 2c... Invalid screw part.

Claims

【実用新案登録請求の範囲】１互いに螺合し合い、相対回転することにより
、一方が他方に対して回転軸方向へ繰り出される
べくヘリコイドネジを有する一組のヘリコイド部
材において、一方のヘリコイド部材は、他本のヘリコイド部
材のヘリコイドネジと螺合し、かつ該ヘリコイド
ネジの回転軸方向長さと所望繰り出し長さとの和
以上の全長のヘリコイドネジを有し、他方のヘリコイド部材は、前記一方のヘリコイ
ド部材のヘリコイドネジと螺合するヘリコイドネ
ジと、該ヘリコイドネジから延設され、該ヘリコ
イドネジと等しいリードを有し、前記一方のヘリ
コイド部材のヘリコイドと互いに接触しないよう
に組み合う無効ネジ部とからなることを特徴とす
るヘリコイドネジ部材。２無効ネジ部はそのネジ山部を形成する一組の
フランク面の互いに対向する部分の間隔が、該無
効ネジ部に連なるヘリコイドネジのネジ山部を形
成する一組のフランク面のうち、上記部分とネジ
山の高さ方向に関して等しい位置にある互いに対
向する部分の間隔よりも短かく形成されたことを
特徴とする実用新案登録請求の範囲第１項記載の
ヘリコイドネジ部材。３無効ネジ部のネジ山はつの高さが、該無効ネ
ジ部に連なるヘリコイドネジのネジ山の高さと比
して等しい高さ又はより低い高さに形成されたこ
とを特徴とする実用新案登録請求の範囲第２項記
載のヘリコイドネジ部材。４他方のヘリコイド部材は合成樹脂成型により
形成されたことを特徴とする実用新案登録請求の
範囲第１項乃至第３項のいずれかに記載のヘリコ
イドネジ部材。[Claims for Utility Model Registration] 1. A pair of helicoid members having helicoid screws so that one of the helicoid members is screwed together and rotated relative to the other in the direction of the rotation axis, one of the helicoid members being , the other helicoid member has a helicoid screw that is threadedly engaged with the helicoid screw of the other helicoid member and has a total length that is longer than the sum of the length in the rotational axis direction of the helicoid screw and the desired payout length; Consisting of a helicoid screw threaded into the helicoid screw of the member, and an invalid threaded portion extending from the helicoid screw, having a lead equal to that of the helicoid screw, and mating with the helicoid of the one helicoid member so as not to come into contact with each other. A helicoid screw member characterized by: 2 The distance between the mutually opposing portions of a pair of flank surfaces forming the threaded portion of the invalid threaded portion is set as above among the pair of flank surfaces forming the threaded portion of the helicoid screw continuous with the invalid threaded portion. The helicoid screw member according to claim 1, wherein the helicoid screw member is formed to be shorter than the interval between mutually opposing portions that are located at the same position in the height direction of the screw thread. 3. Registration of a utility model characterized in that the height of the threads of the invalid threaded portion is equal to or lower than the height of the threads of the helicoid screw connected to the invalid threaded portion. A helicoid screw member according to claim 2. 4. The helicoid screw member according to any one of claims 1 to 3, wherein the other helicoid member is formed by synthetic resin molding.