JPH046844Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a spray rod, and particularly to a spray rod that detachably connects a plurality of liquid passage pipes.

[Conventional technology and its problems]

A spray rod that sequentially connects multiple liquid passage tubes to set the desired length has a threaded portion formed at the rear end of the preceding liquid passage tube, and a male (female) screw at the tip of the subsequent liquid passage tube. ) They were extended by forming screws and threading them together. A spray rod with such a configuration requires a large number of work steps because female and male screws must be applied to the ends of each liquid passage tube, and in order to reduce the weight of the rod, for example, if materials such as stainless steel are used, Since the wall thickness of each liquid passage tube is extremely thin, adding the female and male threads mentioned above has the disadvantage that the wall thickness of that part becomes even thinner and the strength decreases.

[Means for solving problems]

This idea was created in view of the above-mentioned drawbacks, and involves screwing a desired number of intermediate liquid passage pipes having a pair of screw fittings caulked and fixed to both ends between the preceding liquid passage pipe and the succeeding liquid passage pipe. This improves processing efficiency and provides a spray rod with sufficient strength.

〔Example〕

An embodiment of this invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 is a diagram showing the entire spray rod. 1 in the diagram
1 is a spray rod, and this spray rod 1 is constructed by detachably connecting a plurality of liquid passage pipes 2a, 2b, 2c, and 2d having approximately the same diameter and different lengths in sequence. By the way, at the tip of the liquid passage tube 2a on the most distal side,
A spray nozzle 3 for atomizing the spray liquid is attached to the rear end, and a female screw fitting 4 to be described later is attached to the rear end.
a is fixed. Subsequent intermediate liquid passage pipe 2
Female screw fittings 4b, 4 of the same shape are also attached to the rear ends of each of b, 2c.
c are fixed respectively. Also, the liquid passage pipe 2 on the leading edge side
At the tips of the subsequent liquid passage pipes 2b, 2c, 2d, except for a, the female screw fittings 4a, 4b,
Male threaded metal fittings 5a, 5b, and 5c that are screwed together with 4c are fixed respectively. A connecting fitting 6 is attached to the rear end of the last liquid passage pipe 2d, and is connected to a sprayer main body (not shown) via a handle (not shown). Here, liquid passage pipes 2b and 2
It has substantially the same structure as c and except for the length, and it is possible to prepare a large number of such liquid passage pipes that have the same shape but differ only in length.

FIG. 2 shows a connection structure using the liquid passage pipes 2a, 2b, and 2d (2c is not shown) and a structure for fixing each screw fitting to each liquid passage pipe. The female screw fitting 4a is made of a relatively soft material that can be easily threaded, and its tip has a small diameter and is inserted into the liquid passage tube 2a. An annular groove 9 and a caulking groove 10 are formed on the outer periphery in order from the tip side, and a groove 11 having the same cross-section as the groove 9 is formed on the inner periphery of the rear end of the liquid passage tube 2a. . 12
is a sealing O-ring press-fitted between these grooves 9 and 11, and the rearmost end of the liquid passage pipe 2a is caulked into the caulking groove 10. The rear end of the female screw fitting 4a has a large diameter, and a female screw 15 is formed on its inner periphery, and a liquid passage hole 7 is bored in the longitudinal center of the female screw fitting 4a. . The male screw fitting 5a fixed to the liquid passage tube 2b is made of the same material as the female screw fitting 4a, and its rear end has a small diameter and is inserted into the liquid passage tube 2b. On the outer periphery of this rear end, an annular groove 8 and a caulking groove 14 are formed in order from the rear end side, and on the inner periphery of the tip of the liquid passage tube 2b, a groove 16 with the same cross-section as the groove 8 is formed. It is formed. 17 is a sealing hole press-fitted between these grooves 8 and 16.
The caulking groove 14 has a liquid passage pipe 2b.
The leading edge of the blade is caulked. The middle part of the male threaded metal fitting 5a has a large diameter, which is approximately the same diameter as the rear end part of the female threaded metal fitting 4a, and the tip part has a medium diameter. A male screw 18 is formed on the outer periphery of this tip, and a male screw 18 is formed to be screwed into the female screw 15, and an O screw 19 is used to seal the female screw fitting 4a and the male screw fitting 5a.
It's a ring. A liquid passage hole 20 is bored in the longitudinal center of the male screw fitting 5a. Therefore, the liquid passage pipes 2b and 2c in the intermediate part which are added to the spray rod 1 and are removable have male screw fittings 5a, 5 of approximately the same shape at their tips.
Female threaded metal fittings 4b and 4c are fixed to the rear end of b by caulking, and the only difference is in length.

In addition, the nozzle 3, female screw fittings 4a, 4b, 4
c, male screw fittings 5a, 5b, 5c and connecting fittings 6
Serrations, etc. in the axial direction are formed on the outer periphery of the shaft to facilitate handling during screwing. Moreover, the female screws 4a, 4b, 4c and the male screw 5
It can be attached to the liquid passage pipes 2d, 2c, 2b, 2a by sequentially reversing the caulking positions of a, 5b, and 5c.

When using the spray rod of the present invention, first attach the female screw fitting 4b of the liquid passage tubes 2b, 2c, .
4c through the O-ring 19, or
Alternatively, the caulked female screw fitting 4a is directly screwed into the liquid passage pipe 2a having the nozzle 3 via the O-ring 19. Therefore, the sprayed liquid passes through the liquid passage pipe 2d, intermediate liquid passage pipes 2b, 2c, etc., and reaches the nozzle 3 of the liquid passage pipe 2a.
It can be sprayed from Also O-ring 9,1
9 prevents the spray liquid from leaking from the joint between the liquid passage pipes.

[Effect of idea]

Since this invention is constructed as described above, it is possible to swage standardized mass-produced female and male threaded metal fittings onto a standardized and produced liquid passage pipe made of stainless steel or the like, thereby reducing production costs. Furthermore, since it is not necessary to cut a screw to reduce the wall thickness of the inner wall surface of the thin liquid passage pipe, the strength becomes highly reliable.

[Brief explanation of the drawing]

Figure 1 is an overall front view showing the spray rod of this invention.
FIG. 2 is an enlarged sectional view of the main part. 1... Spray rod, 2a, 2b, 2c, 2d... Liquid passage pipe, 4a, 4b, 4c... Female screw fitting, 5a,
5b, 5c... Male screw fitting, 10, 14... Caulking groove, 12, 17, 19... O ring, 15...
Female screw, 18...male screw.

Claims (1)

[Scope of utility model registration request] A leading liquid passage tube has a nozzle attached to its tip and a threaded metal fitting secured by caulking to its rear end, a screw metal fitting capable of being screwed together with the screw metal fitting at its tip, and another screw metal fitting secured by caulking to its rear end, respectively. and a subsequent liquid passage pipe having a threaded metal fitting that can be screwed together with the other threaded metal fitting at its tip and a connecting fitting 6 attached to its rear end to be connected to a sprayer, etc. A spray rod in which a leading liquid passage pipe, an intermediate liquid passage pipe, and a succeeding liquid passage pipe are removably connected with screws.