JPH0424236Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a hose tightener, and more specifically, the diameter of the metal band is contracted by the rotation of a worm screw, and the inner hose is tightened. related to hose fasteners.

(Conventional technology) Hose fasteners using conventional worm screws are
An engaging portion is formed in a metal band by punching or stamping, and a housing is fixed to the base of the band, and a worm screw rotates in a fixed position within the housing to rotate the band around the band. It was designed to move in the direction of the
In addition to Publication No. 22676, many other proposals have been made.

(Problem to be solved by the invention) In the conventional hose fastener described above, when the worm screw that moves the band band is rotated, the band band engaged with it is sequentially drawn in and the winding diameter is reduced. The free end side of the band band that has been opened will pop out from the opening of the housing, and the free end side of the band band will spring up radially outward due to the action of the spring.

Therefore, there are problems in that fingers or fingers may get caught on the sprung portion of the band, resulting in injury, or clothes may be caught and damaged. Conventionally, in order to eliminate the above-mentioned danger, measures such as cutting off the sprung part of the band after it has been completely tightened have been taken, but in this case, the outer diameter of the tightening at the time of reuse is the same as the original diameter. There will be restrictions such as the location must be smaller than the tightening outer diameter of.

The present invention was devised in view of the problems of the conventional technology, and its purpose is to provide a hose that can be used safely by preventing the free end side of the band from jumping up. It is intended to provide a fastener.

(Means for Solving the Problems) In order to achieve the above object, the hose fastener of the present invention projects the connecting member in the protruding direction from the side end of the band release end side of the housing that accommodates the worm screw. A band with a substantially gate-shaped front view is integrally connected to the side end of the connecting member to prevent it from jumping up. The flip-up prevention piece is provided to protrude along the winding direction of the band.

(Function) According to the above means, the free end side of the band that is pulled in the winding direction of the band by the rotation of the worm screw is guided into the spring-up prevention piece through the opening of the housing, and the inner surface of the prevention piece is guided through the opening of the housing. This prevents the spring from springing outward in the radial direction due to the action of the spring.

(Example) Hereinafter, an example of the present invention will be described based on the drawings. 1 is a band, 2 is a housing fixed to the base of the band 1, 3 is a worm screw rotatably housed in a fixed position in the housing 2, 4 is a piece to prevent jumping up.

The band 1 is made of a stainless steel plate formed into a belt shape with a predetermined width, and the engaging portion 5 is formed by punching out an inclined engaging portion 5 at a predetermined pitch from the middle position in the lengthwise direction to the tip. A housing 2 is fixed to the surface side of the base that is not formed.

The cross-sectional shape of the engaging portion 5 formed on the band 1 is an asymmetrical trapezoid so that the engagement with the worm of a worm screw 3, which will be described later, is performed stably and reliably. The housing 2 fixed to the base of the band 1 includes a lower member 2a that is engaged with and fixed to the back side of the band 1, and an upper member 2b that is engaged with the lower member 2a.
The lower member 2a has side walls 6 that stand up on both sides of the band 1 in the width direction and are formed integrally, and
Engagement pieces 7 are bent upward on both sides of the band 1 in the longitudinal direction and are fitted into attachment holes 8 formed in the band 1.

The upper member 2b is formed in an inverted U shape, and its side wall 9
The side wall 6 of the lower member 2a is inserted into the insertion hole 10 bored in the
The insertion pieces 11 connected to the upper and lower members 2 are inserted, and the upper and lower members 2 are bent horizontally outward.
b, 2a can be assembled integrally.

Further, presser pieces 12 are vertically arranged downwardly in openings on both sides along the longitudinal direction of the upper member 2b, and hold the worm screw 3 housed in the housing 2 in a fixed position.

Further, at the side end of the upper member 2b of the housing 2, that is, the side end from which the open end side of the band 1 projects,
A flip-up prevention piece 4 having a substantially gate-shaped front view is integrally connected to the side wall 6 via a connecting member 13. The direction in which the anti-jumping pieces 4 are provided protrudes along the circumferential direction in which the band 1 is wound.

The worm screw 3 housed in the housing 2 has a worm 3b formed on the circumferential surface of the central part of the shaft rod 3a, and a shaft rod 3a that protrudes outward from the housing 2.
An operating section 14 for rotational operation is formed at one end of the holder. Further, a stepped portion 15 is formed on the axially outer side of the worm 3b in the shaft rod 3a, to which an inverted U-shaped presser piece 12 formed on the housing 2 is engaged, thereby stopping the worm screw 3 from moving in the axial direction. It is designed so that it can be rotated to a fixed position.

The operating part 14 has a regular hexagonal outer shape, and a deep cross groove 16 is formed on the side end surface, and one of the grooves constituting the cross groove 16 is opened to the circumferential surface so that it can be driven by a screwdriver. The worm screw 3 is also rotatable. In addition, the operation section 14
may be provided not only on one side of the shaft rod 3a but also on both sides.

In the hose tightening tool configured as described above, by rotating the worm screw 3, the band 1 is drawn in and the diameter of the winding formed by the band 1 is reduced, thereby tightening the hose fitted to the nipple. I can do it. As the winding diameter decreases, the housing 2
The open end of the band 1 protruding from the side end is guided and inserted into a flip-up prevention piece 4 connected to the housing 2, thereby preventing the open end of the band 1 from jumping up.

(Effects of the invention) As detailed above, the hose clamp of the invention has the following features:
By forming the band jump-preventing piece in a row in the direction of the protrusion of the band release end in the housing that accommodates the worm screw, the bounce of the band release end that occurs as the winding diameter of the band is reduced can be prevented as described above. It is held down by the flip-up prevention piece and extends along the winding direction of the band. Therefore, even if the protruding end of the band is cut off, there is no risk of injury if fingers or clothing are caught on the band, and the band can be used safely and securely.

Furthermore, since the lower sides of the connecting member and the flip-up prevention piece are open, there is no possibility of dust or other foreign matter becoming clogged, and therefore the guide insertion of the band end can be carried out smoothly. In addition, since the above-mentioned connecting member and flip-up prevention piece are placed above the band, they are completely unrelated to changes in the winding diameter of the band, and as a result, the diameter of the band can be smoothly changed by the rotation of the worm screw. It is subject to change. That is,
The connecting member and the anti-jumping piece do not hinder the bending of the band, and as a result, it is possible to provide a hose tightening tool that allows the band to be tightened with a small force.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view, FIG. 2 is a longitudinal sectional front view, FIG. 3 is a longitudinal sectional side view, and FIG. 4 is an exploded perspective view. In the figure, 1...Band, 2...Housing, 3...
...Worm screw, 4...Bounce prevention piece.

Claims (1)

[Scope of utility model registration request] A hose fastener in which a housing is fixed to one side of a band in which engaging parts are formed at a predetermined pitch, and a worm screw that engages with the engaging parts is rotatably provided in a fixed position in the housing. A connecting member is provided protruding from the side end of the housing on the side where the band is released, toward the pop-out direction, and a band jumping-prevention piece having a substantially gate-shaped front shape is integrally and continuously formed on the side end of the connecting member. A hose fastener featuring: