JPH0121277Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a protective net attachment device.

When various devices that pose a hazard to the human body, such as rotating parts, high-pressure parts, and high-temperature parts, are attached to machinery or installed in buildings, etc., the Attach a protective net.

When attaching the protective net in this way, conventionally, for example, a plurality of mounting legs B are provided on the outer periphery of the protective net A, which is formed in a front circular shape, and the mounting legs B are attached to the open end of the outer cylinder (not shown). They were each tightened and fixed with bolts C.

Therefore, it is necessary to provide a screw hole in at least one of the mounting leg B or the outer cylinder to be screwed into the bolt C, which increases the number of man-hours required for manufacturing the mounting device. Needs to be removed. In particular, when the dangerous object is a high-temperature object, the bolt C may rust due to radiant heat from the dangerous object, or it may become difficult to attach or remove the bolt C depending on its relative position with other parts. It was hot.

This invention was made in view of the above, and
The present invention provides a protective net attachment device that can be attached and detached with a so-called one-touch operation without using bolts or the like as in the conventional case.

The present invention will be explained in detail below based on an embodiment shown in FIG.

A plurality of engagement holes 2 are provided at the open end of an outer cylinder 1 that accommodates a dangerous substance (not shown) along the open end line.

Further, the protective net 3, which is formed in a front circular shape to cover the opening end, is made of an elastic material with high resilience, such as a spring steel wire. By providing protrusions 4 at positions corresponding to the engagement holes 2 on the outer circumference of the protective net 3, the protrusions 4 are thrust into the engagement holes 2 from inside and engaged with the protective net 3. is held at the open end of the outer cylinder 1.

In the above configuration, when attaching the protective net 3 to the outer cylinder 1, first, the two adjacent protrusions 4 are thrust into the engagement hole 2 and engaged. Next, the protective net 3 is elastically deformed so that the remaining protrusions 4 face the remaining engagement holes 2, and the external force on the protective net 3 is released. Then,
Since the protective net 3 is restored and the protrusion 4 engages with the engagement hole 2 from inside, the protective net 3 can be attached to the outer cylinder 1 without using bolts as in the conventional case.

Further, when removing the protective net 3, the protective net 3 is elastically contracted by following the reverse procedure. Then, the protrusion 4 is removed from the engagement hole 2, so that the protective net 3 can be removed from the outer cylinder 1.

In the embodiment, the protective net 3 has a circular shape from the front, but the shape of the protective net 3 may be set according to the shape of the open end of the outer cylinder 1. In addition, in the embodiment, the three engaging holes 2 and the protrusions 4 are provided at unequal positions to specify the mounting direction of the protective net 3, but the number and position of the engaging holes 2 and the protrusions 4 are This is not limited to the embodiment, and the outer cylinder 1 may have a divided structure to improve the workability of attaching and detaching the protective net 3.

As explained above, according to the present invention, the protective net can be attached to and detached from the outer cylinder simply by elastically deforming it, and there is no need to use bolts or the like as in the conventional case.
For this reason, it is possible to improve the workability of attaching and detaching the protective net, reduce the number of parts, and reduce the number of man-hours for machining the outer cylinder, etc., making it possible to provide a protective net attaching device with excellent attaching and detaching workability at a low cost.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a conventional protection net, and FIG. 2 is a perspective view of essential parts showing an embodiment of the present invention. 1...Outer cylinder, 2...Engagement hole, 3...Protection net, 4
……protrusion.

Claims (1)

[Scope of utility model registration request] A device for removably attaching a protective net to an open end of an outer cylinder, in which a plurality of engagement holes are formed along the open end of the outer cylinder, and the protective net is made of an elastic material with high resilience, and An attachment device for a protective net, characterized in that a protrusion that protrudes into the engagement hole from the inner periphery and engages is provided on the outer periphery of the protective net.