JPH04203693A - New tripod - Google Patents

Abstract

PURPOSE:To make operation performable easily and safely with certainty by installing a sudden expansion preventer in which an elastic body exists so as to come into contact with each other in a gap between a main pipe inner wall and a slide pipe outer wall. CONSTITUTION:In a tripod being made up of installing a main shaft pipe 1 and a freely expansible slide pipe 2 having a smaller outer diameter than this main shaft pipe 1 and being housed in this pipe 1, there is provided a sudden expansion preventer in which an elastic body 3 exists so as t come into contact with each other in space between an inner wall of the main shaft pipe 1 and an outer wall of the slide pipe 2. With such a constitution, at the time of starting to use the tripod or termination of the service, as well as when the expansible slide pipe 2 is drawn out or housed from or to the main shaft pipe 1, such a possibility that an operator might get hurt by mistake as he is unable to endure weight of the slide pipe 2 is almost brought to nothing, thus operation can be done safely.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a tripod, and more particularly to a novel telescopic tripod that operates safely and reliably and can be easily operated by anyone.

[Prior Art] Conventionally, telescopic pipes have been used for various supports, steps, work platforms, etc., and various types of 81 ellipsoids have been proposed. In a telescopic pipe consisting of a telescopic slide pipe housed in a main shaft pipe and having an outer diameter of
4, which fixes the length of the pipe by inserting the length of the pipe, and the other which has a stop device for a slide pipe that is extendable and retractable, as disclosed in Japanese Patent Publication No. 46-39363. These have extendable slide pipes that allow you to freely set the length of the pipes.

However, when starting to use or finishing use, the telescopic slide pipe is pulled out and stored from the main shaft pipe, but this work is done manually, so the operator may not be able to withstand the weight of the slide pipe and may accidentally This often resulted in injuries. Furthermore, if other heavy objects, such as illumination lights or signboards, are installed at the tip of the slide pipe, the situation is dangerous. Therefore, the industry has been eager to research and develop a retractable slide pipe that can be used easily and safely.

[Problems to be Solved by the Invention] An object of the present invention is to solve the problems of the prior art, and to provide a novel tripod that has not been known in the past.

[Means for Solving the Problems] The present invention has been made to solve the above-mentioned problems, and includes a main shaft pipe, an outer diameter smaller than the inner diameter of the main shaft pipe, and a pipe inside the main shaft pipe. The tripod is equipped with a telescopic slide pipe that is housed, and the tripod has a sudden expansion/contraction preventer in which an elastic body 3 is present between the inner wall of the main shaft pipe and the outer wall of the slide pipe so as to be in contact with each other. The present invention provides a novel tripod characterized by:

According to the invention, when starting to use the tripod,
Or, at the end of use, when pulling out or storing the telescopic slide pipe from the main shaft pipe, it is almost impossible to sustain the weight of the slide pipe and accidentally injure yourself, making it possible to work safely. . The present invention will now be described in detail based on examples shown in the accompanying drawings.

A tripod comprising a main shaft pipe 1 and an extendable slide pipe 2 which has an outer diameter smaller than the inner diameter of the main shaft pipe and is housed within the main shaft pipe. It is fixedly attached to a part of the slide pipe, preferably to the end of the slide pipe. The material of the elastic body 3 is not particularly specified and may be any material, but generally it is artificial or natural rubber and its compounds, polymer compounds such as foamed plastics, steel materials, etc. Rubber is preferred, and its shape is not particularly restricted; it may be of any shape, such as a ring shape or a plate spring shape, among which a ring shape is preferred.0 When the elastic body is rubber, the main shaft pipe 1 It can be installed in a ring shape between the inner wall of the telescopic pipe 2 and the outer wall of the telescopic pipe 2 so as to be in close contact with each other. Furthermore, it is desirable that the shape has a passage for air to go in and out when the slide pipe is pulled out or stored.

In addition, the area of the elastic body in contact with the inner wall of the main shaft pipe is determined appropriately depending on the weight of the slide pipe and the item installed on the slide pipe. Then, the area can be increased.

In addition, the device that fixes the slide pipe to a predetermined length is
There are no particular regulations. (Any conventionally used device can be used.) For example, by drilling a common horizontal hole 103 in the main shaft pipe 101 and slide pipe Eve 102, and inserting the stone bar stick 104 into the horizontal hole. There are perforated types that fix the length of the pipe, types that have a stop device for the slide pipe that can be expanded and contracted as shown in Japanese Patent Publication No. 46-39363, and even types that have one type of slide stopper using a spring. A one-way system is preferred.

The one-type slide stopper means that the main shaft pipe 1 is fixedly connected to the lower side of the slide stopper box 4, which has perforations with a hole diameter much larger than the outer diameter of the slide pipe 2 on the upper side and the lower side, respectively. is housed in the main shaft pipe through a hole 5 on the upper side and a hole 6 on the lower side. The slide stopper box 3 houses fixed rings 8A and 8B fixed to the ring fixing shaft 7, a spring 9, a pair of slide stoppers 10A, an IOB, and part of the opening release pins 11A and IIB. . Here, select "Slide stopper 1"
"One end of 0A, IOB is fixed" means that one end of slide stopper 1OA, 10B is semi-fixed by adjusting the interval by two fixing rings 8A, 8B fixed to ring fixing shaft 7 and spring 9. This refers to the state in which the slide stoppers 10A and 10B are connected, and does not mean that they are completely joined and fixed.Furthermore, in the center of the slide stoppers 10A and 10B, there is a hole 1 that is much larger than the outer diameter of the slide pipe 2.
2A and 12B, and the slide pipe 2 passes through these holes and the spring 9, respectively. Each of the slide stoppers 1OA and IOB consists of at least one piece of steel, preferably two or more pieces,
By using a plurality of steel plates or four plates, the effectiveness of the pipe slide stopper is further improved.

Furthermore, opening and opening release pins IIA and IIB are connected and fixed to one end of the slide stoppers 10A and 1OB that are not fixed, respectively, and at least one of these lock release pins 11A and 11B is connected and fixed. By pushing in, the slide stopper is unlocked and the slide pipe 2 is in a state where it can freely expand and contract. After setting the slide pipe 2 to a desired length, by releasing the lock release pin, the slide pipe 2 is automatically fixed safely, reliably, and more easily.

[Effect of the invention] When you start using the tripod or when you finish using it, you can pull out the telescopic slide pipe from the main shaft pipe,
However, because this work is done manually, workers are often unable to withstand the weight of the slide pipe, resulting in accidental injury.Furthermore, there is a possibility that workers may accidentally injure themselves due to the weight of the slide pipe. The present invention has made it possible to carry out the above-mentioned work easily, safely, and reliably, which is a dangerous situation when heavy objects such as the above are being installed.

Furthermore, the slide pipe stopper, the fixing ring, a part of the lock release pin, etc. are housed in the slide stopper box instead of being exposed to the outside, making handling even safer. The multiple pipe slide stoppers work reliably as a stopper, and anyone can now easily operate and fix the pipe to the desired length by simply pushing the lock release pin. In this way, the tripod of the present invention greatly contributes to the industry.

[Brief explanation of the drawing]

Fig. 1 shows the overall view of the tripod according to the present invention, Fig. 2 shows a side view and a plan view of the elastic body, where (a) to (C) show the shape of the elastic body, and Fig. 3 shows the light stopper and the top view of the elastic body. Figure 4 schematically illustrates a perforated slide pipe. 1 is the main shaft pipe, 2 is the slide pipe, 3 is the elastic body, 3
1 is the air passage, 4 is the slide stopper box,
5 is a hole on the top side, 6 is a hole on the bottom side, 7 is a ring fixing shaft, 8A
and 8B is a fixed ring, 9 is a spring, 10A and IOB are slide stoppers, 11A and 11B are lock release pins, 12 is a tripod, 101 is a main shaft pipe, 1
02 is a slide pipe, 103 is a side hole, and 104 is a slide stopper stick. Patent applicant Hideyo Niida Figure 3 (α) Figure 2 (b) (C) Procedural amendment (method) April 3, 1991

Claims (1)

[Scope of Claims] 1. A tripod comprising a main shaft pipe and a telescopic slide pipe having an outer diameter smaller than the inner diameter of the main shaft pipe and housed in the main shaft pipe, wherein the main shaft pipe A novel tripod characterized in that it has a sudden expansion/contraction preventer in which an elastic body is present between the inner wall and the outer wall of the slide pipe so as to be in contact with each other. 2. The novel tripod according to claim 1, wherein the elastic body is rubber. 3. Claim 1, wherein the slide stopper for fixing the slide pipe is a pair of slide pipe stoppers fixed at one end, penetrated through the center by the slide pipe, and further spaced apart from each other by a spring. New tripod described in section. 4. The novel tripod according to claim 3, wherein the unfixed end of the slide stopper is fixedly connected to the lock release pin. 5. The novel tripod according to any one of claims 3 and 4, wherein the spring, slide pipe stopper, and part of the lock release pin are housed in a slide stopper box.