JPH045834Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a connector for synthetic resin and rubber hoses (soft pipes), and more specifically, a connection used to cut and connect damaged hoses. Regarding ingredients (commonly known as horse menders).

(Prior art) If a synthetic resin hose that is generally used for water or air supply at a construction site etc. is damaged for some reason, such as cracking or breaking, the hose can be replaced without replacing the entire hose. Used as a hose connector (Hose Mender) to cut and remove the damaged part and connect other usable parts.
No. 2 is proposed.

(Problem to be solved by the invention) In the conventional hose connector described above, the radial caulking pieces connected to the outer periphery of the annular plate only have driving claws at their tips. When the caulking piece is struck with a stone, hammer, etc. on site and bent so as to be parallel to the outer surface of the hose, the caulking piece will be wavy and bent, or inclined and bent.
As a result, variations occur in the amount of the crimping claws driven into the hose in the crimping piece, resulting in problems such as water or air leaking or the hose coming off due to tension or pressure.

This is because the radial caulking piece is a single flat plate and is partially deformed depending on the position where it receives external force.

The present invention was devised in view of the problems of the above-mentioned conventional techniques, and its purpose is to prevent the crimping piece from bending when it receives an external force to bend it.
To provide a hose connection tool in which the entire piece is uniformly bent as one, allowing the nail to bite into the hose uniformly, and increasing the area where the nail bites into the hose to increase the strength against disconnection. It's about doing.

(Means for Solving the Problems) In order to achieve the above object, the hose connection device of the present invention is provided by protruding radially from the outer periphery of an annular plate that is erected and fixed at the intermediate portion of the left and right hose insertion cylinders. A feature is that a biting protrusion is provided on the side edge of the caulking piece in the width direction. The crimping piece may have the same width over its entire length, but it may also be tapered to become narrower or wider in the radial direction from the root of the annular plate.

Further, the biting protrusions provided on the side edges of the caulking piece may be provided on only one side or on both sides, and it is effective to provide them on both side edges of the caulking piece when increasing the pull-out strength.

(Function) According to the above configuration, on the width direction side edge of the caulking piece,
By providing the biting protrusion that bites into the hose, the biting protrusion acts like a reinforcing rib on the caulking piece, and as a result, the caulking piece is bent as a whole. Furthermore, when the caulking piece is bent, not only the driving pawl at the tip but also the biting protrusion on the side edge bite into the hose, thereby strengthening the prevention of the hose from coming off. Moreover, when the caulking piece has a taper, the biting protrusion on the side edge intersects with the axis of the hose, increasing the resistance to the hose coming off.

(Example) An example of the present invention will be described based on the drawings.
In the figure, reference numerals 1 and 1' denote hose insertion cylinder parts, which are constructed by forming bamboo-shaped nipples on both sides of a single cylinder body, and are approximately midway between the hose insertion cylinder parts 1 and 1'. Two annular plates 2, 2' are vertically fixed at the site, and the annular plates 2, 2' are integrally connected by spot welding or the like.

A caulking piece 3,
3' are arranged in a radial manner, and driving pawls 4, 4' are bent at the tips of each caulking piece 3, 3', and both widthwise edges of each caulking piece 3, 3' Similar to the driving claws 4, 4', there are biting protrusions 5,
5' is bent at right angles to the caulking piece. Incidentally, the driving claws 4,
4' indicates that when the caulking piece is bent horizontally along the outer surface of the hose a, the driving claws 4, 4' are attached to the annular plates 2, 4'.
It is bent so as to face in the direction 2', thereby providing resistance to the direction in which the hose a is pulled out.

The caulking pieces 3, 3' may protrude with the same width from the root to the outer peripheral edge of the annular plates 2, 2' toward the tip, but as shown in the figure, the width increases from the root to the tip. It may be tapered so that it becomes narrower, or it may be tapered so that it becomes wider from the base to the tip.

When biting protrusions 5, 5' are provided on the left and right side edges of the tapered caulking pieces 3, 3' as shown in the figure, the biting protrusions 5, 5' intersect with the axis of the hose a. This provides resistance to the pulling of the hose a in the direction in which the hose a comes off, increasing the effect of preventing the hose a from coming off.

With the above structure, the biting protrusions 5, 5' formed on the widthwise side edges of the caulking pieces 3, 3' act not only to prevent the hose a from coming off, but also as reinforcing ribs for the caulking pieces. This prevents the caulking pieces from being partially bent and deformed when the caulking pieces 3, 3' are hit with a stone or a hammer, etc., and the caulking pieces 3, 3'
While keeping it flat, bend it at a right angle from the annular plates 2 and 2',
Uniform bending can be performed. Since the caulking pieces 3, 3' are provided with biting protrusions 5, 5' in addition to the driving claws 4, 4' at the tips, the area for holding the hose is increased compared to the conventional structure. The function of preventing hose a from coming off can be improved. In addition, when increasing the tightening force of the caulking piece, it is recommended to fit a band-shaped ring on the outside.

(Effects of the invention) As detailed above, the hose connector of the present invention has a biting protrusion that bites into the hose on the widthwise side edge of the caulking piece that projects radially from the outer periphery of the annular plate. Because of this, the function of preventing the hose from coming off can be increased and a stable connection can be achieved.

In addition, the biting protrusions also act as reinforcing ribs for the caulking piece, and when the caulking piece is hit with a stone or a hammer, it prevents the caulking piece from being partially deformed and bends uniformly while remaining flat. Ru. Therefore, the bending of each caulking piece can be made substantially uniform, and uniform tightening can be performed.

Also, when the width of the caulking piece is not constant and is tapered, the biting protrusion intersects with the axis, and as a result, the effect of preventing the hose from coming off is increased against pulling in the direction of the hose coming off. , a stronger connection can be established.

Therefore, it is possible to provide a connecting tool that can increase the connection strength compared to conventional products.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and Fig. 1' is a partially cutaway front view, Fig. 2 is a partially cutaway front view showing a state in which the hose is connected, and Fig. 3 is a view taken along line 3-3 in Fig. 2. FIG. 4 is a plan view showing the marks of claws and protrusions left on the hose by tightening the proposed connector. In the figure, 1, 1'...Hose insertion cylinder part, 2, 2'...
... Annular plate, 3, 3'... Caulking piece, 4, 4'... Drive claw, 5, 5'... Biting protrusion, a... Hose.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Hose insertion cylinders are provided back to back, and an annular plate is vertically fixed to the middle part of the left and right insertion cylinders, and the outer periphery of the annular plate is fixed. The hose connector is provided with caulking pieces each having a driving pawl formed at the tip thereof arranged in a radial manner, and is characterized in that a biting protrusion that bites into the hose is provided along the side edge of the caulking piece. hose fittings. (2) The hose connector according to claim (1), wherein the caulking piece has a width that tapers in a radial direction from the base of the annular plate.