JP3005319U - Hook for fall prevention safety belt - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a highly safe hook with a structure in which the spring of the hook does not come off. [Structure] The structure is such that a convex portion 7 is provided to face the inside of both side walls 41, 41 on the tip side from the position of the spring 6 for urging the opening / closing cap 4, and a narrow portion is formed. [Effect] The spring 6 is no longer intentionally disengaged, and the hook is securely engaged, resulting in a safer hook.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present application relates to a hook that is connected to a rope end of a safety belt to prevent a worker from falling when working at a high place in construction work, and is hung on a structure near a work place for use. Is.

[0002]

[Prior art]

 Since this type of conventional hook is used at construction sites, the hook diameter is set to 50 mm so that it can be directly engaged with a single pipe for scaffolding (48.6 mm). Therefore, the open / close cap 4 has a long pivot stroke, and therefore the built-in spring 6 is also long. Therefore, in order to measure the stability of the spring 6, a spring fitting piece 44 is provided on the back side 42 on the opening / closing cap 4 side, and a spring receiving portion / separation prevention piece 31 is provided on the abdominal side of the hook body 3. .

[0003]

[Problems to be solved by the device]

 However, even if the opening / closing cap 4 closed the hook, there was a long distance between the spring fitting piece 44 and the disengagement stop piece 31, so there was a possibility that the spring 6 could come off with some measure. Therefore, the present application eliminates this drawback and provides a safe hook.

[0004]

[Means for Solving the Problems]

 Therefore, the present application has a structure in which the protruding portions 7 projecting inward are provided on the both side walls 41, 41 of the opening / closing cap 4 to form a narrow space, and the spring 6 is prevented from being accidentally or intentionally removed. Is.

[0005]

【Example】

 The hook of the present application has an opening / closing cap 4 that opens and closes a hook on the abdomen of a hook body 3 that has a hook 1 at the tip and an annulus 2 at the base, and a safety that prevents the opening / closing cap 4 from rotating at the back. A cap 5 is provided, and the opening and closing cap 4 whose base end is axially fixed to the ring part 2 of the hook body 3 has a spring 6 whose tip abuts against the tip of the hook body 3 from the inside. It is biased and has a structure in which a convex portion 7 is provided on both side walls 41, 41 on the tip side of the position of the spring 6 so as to face inward, thereby forming a narrow portion.

The open / close cap 4 is formed by press punching a thin iron plate, bending it into a gate shape, providing a contact portion 43 of the hook tip 11 at the tip of the back side 42, and a spring fitting at the base. The piece 44 is folded inward, two through-shaft holes are provided in both side walls 41, 41, and the pressing portion is symmetrically provided slightly forward (on the tip side) from the spring position so that a convex portion is formed inward. 7 is provided to form the interstitial part, so that the spring does not come out.

[0007]

[Effect of device]

 As described above, by providing the convex portion 7 inside the both side walls 41, 41 of the opening / closing cap 4 to form the narrowed portion, the spring 6 cannot be removed accidentally or intentionally, which may cause a crash. There will be no connection.

[Brief description of drawings]

FIG. 1 is a front view of a hook of the present application.

FIG. 2 is a plan view of the hook of the present application.

FIG. 3 is a front view of the hook of the present application when the hook is opened.

FIG. 4 is a plan view of the spring portion of the hook of the present application with a part cut away.

FIG. 5 is a cross-sectional view of the hook of the present application with a part of the spring portion cut away.

FIG. 6 is a front view of a conventional product.

[Explanation of symbols]

 1 Hook part 2 Ring part 3 Hook body 4 Opening / closing cap 5 Safety cap 6 Spring 7 Convex part 11 Hook part tip part 31 Disengagement prevention piece 41 Side wall 42 Back side 43 Abutment part 44 Spring fitting piece

Claims (1)

[Scope of utility model registration request] 1. An opening / closing cap (4) for opening and closing a hook on the abdomen of a hook body (3) having a hook (1) at the tip and an annulus (2) at the base, and a safety cap for preventing rotation of the opening / closing cap (4) at the back.
5 In the fall prevention hook with a structure with and
Both side walls 41,41 on the tip side of the spring 6 position of the opening / closing cap 4
A hook for a fall prevention safety belt, which is provided with a convex portion 7 facing inside.