JPH03127812U

JPH03127812U -

Info

Publication number: JPH03127812U
Application number: JP3726390U
Authority: JP
Priority date: 1990-04-09
Filing date: 1990-04-09
Publication date: 1991-12-24

Description

[Brief explanation of drawings]

第１図乃至第５図は請求項１に係るねじの脱落
防止構造の一実施例を示し、第１図は第２図にお
ける−線縦断面図、第２図は平面図、第３図
は第１図においてねじ頭部が脱落防止部に当接し
た状態を示す断面図、第４図は第５図における
−線縦断面図、第５図は平面図、第６図乃至第
９図は請求項１に係るねじの脱落防止構造を通信
用筐体へ適用した例を示し、第６図は分解斜視図
、第７図はベースへスカート部を取付けた状態を
示す斜視図、第８図は第７図における−線要
部横断面図、第９図はベースからスカート部を取
外した状態を示す斜視図、第１０図及び第１１図
は請求項２に係るねじの脱落防止構造の一実施例
を示し、第１０図は第１１図における−線縦
断面図、第１１図は平面図、第１２図は従来のね
じの脱落防止構造を示す断面図である。１……部材、２，２ａ……ねじ頭部、３，３ａ
……ねじ収納穴、４……開口端部、５，５ａ，５
ｂ……脱落防止部、１０，１０ａ……ねじ、２２
……スカート部（部材）。 1 to 5 show an embodiment of the screw falling-off prevention structure according to claim 1, in which FIG. 1 is a vertical sectional view taken along the line - in FIG. 2, FIG. 2 is a plan view, and FIG. Fig. 1 is a cross-sectional view showing a state in which the screw head is in contact with the fall-off prevention part, Fig. 4 is a vertical cross-sectional view taken along the - line in Fig. 5, Fig. 5 is a plan view, and Figs. 6 to 9 are An example in which the structure for preventing screws from falling off according to claim 1 is applied to a communication case is shown, FIG. 6 is an exploded perspective view, FIG. 7 is a perspective view showing a state in which the skirt portion is attached to the base, and FIG. 8 is an exploded perspective view. 9 is a cross-sectional view of the main part taken along the line - in FIG. 7, FIG. 9 is a perspective view showing the state in which the skirt portion is removed from the base, and FIGS. 10 is a longitudinal sectional view taken along the line -- in FIG. 11, FIG. 11 is a plan view, and FIG. 12 is a sectional view showing a conventional screw fall-off prevention structure. 1... Member, 2, 2a... Screw head, 3, 3a
...Screw storage hole, 4...Open end, 5, 5a, 5
b... Fall prevention part, 10, 10a... Screw, 22
...Skirt part (member).

Claims

[Scope of Claim for Utility Model Registration] (1) A screw storage hole into which the screw head is inserted is provided in a synthetic resin member, and a drop-off prevention part that narrows the hole diameter is installed at the open end of the screw storage hole. A structure formed by melting to prevent screws from falling off. (2) The screw fall-off prevention structure according to claim 1, wherein the fall-off prevention part is formed by force cutting during injection molding and has elasticity.