JPH0512550Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to an improvement of a hose clamp used for tightening and fixing a rubber hose or the like.

``Prior Art'' As a conventional hose clamp of this kind, there is one shown, for example, in Japanese Utility Model Publication No. 14511/1983.

Although not specifically shown in the drawings, the conventional hose clamp includes a clamp body made of a single elastic flat plate cut into a predetermined shape, and an annular tightening ring portion and both ends of the ring portion. It consists of a pair of grip parts that extend in opposite directions and stand up, and also includes a holder that has an inverted U-shaped cross section and can hold the pair of grip parts close to each other against elastic force. It is structured as follows.

In actual use, the holder is fitted onto the pair of grips that are close to each other, the grips are temporarily maintained in close proximity, and the diameter of the tightening ring is expanded in advance. Next, after the rubber hose has been inserted into the tightening ring whose diameter has expanded and the rubber hose has been fitted into the end of the connecting pipe, the holder is removed from the pair of grips and the rubber hose is inserted into the tightening ring. By releasing the approaching state of the parts, the diameter of the tightening ring part is automatically reduced by elastic force, and the rubber hose is reliably tightened and fixed to the pipe.

However, in the case of conventional hose clamps, expanding the diameter of the tightening ring using a holder makes it easier to expand the diameter of the tightening ring, so it is easier to insert the rubber hose into the tightening ring. However, when the diameter of the hose to be tightened is relatively small, when fitting the small-diameter hose to the end of the connecting pipe, it is necessary to insert it first. Since the clamp body that is attached to the hose moves carelessly on the hose, there is a problem in that the moved clamp body must be reset to the hose tightening position.

Therefore, an improved type of hose clamp has been proposed as shown in Japanese Utility Model Application Publication No. 117391/1983.

This improved clamp is based on the structure of the conventional clamp described above, but has a pair of presser arms that hang down toward the center of the tightening ring at both ends of one side wall of the holder, which has an inverted U-shaped cross section. The clamp body can be temporarily fixed in a predetermined position on the hose by extending the clamp arms integrally and pressing the hose surface inserted into the tightening ring with the tip of each presser arm. .

Therefore, in the improved clamp, as long as the hose surface is pressed by the tips of the pair of presser arms, the clamp body is prevented from moving on the hose.

``Problem to be solved by the invention'' However, in such an improved hose clamp, the pair of presser arms that press the rubber hose surface are vertically extended toward the center of the tightening ring part, and each Pressing the hose surface with the tip of the presser arm inevitably limits the length of the pair of presser arms due to its structure. In some cases, the tip of the presser arm cannot reliably press the hose surface, resulting in a major problem in that the temporary fixing function cannot be fully exerted.

In addition, the fact that the presser arm extends toward the center of the clamping ring means that when moving the clamp body as necessary, the tip of the presser arm may damage the hose surface or the presser may be damaged. At the same time, there were other problems, such as a large resistance force being generated between the end of the arm and the hose surface, making it impossible for the clamp body to move smoothly.

``Means for Solving the Problems'' Therefore, the present invention was developed in order to effectively solve the conventional problems. Assuming that the hose clamp is composed of a pair of grip parts that control the enlarged diameter of the hose clamp and that can hold the pair of grip parts close to each other through the holder, the holder is placed in the appropriate position of the holder. A presser arm is extended from the side of the hose and comes into contact with the side of the hose.
A configuration is adopted in which the inner surface of the inclined presser arm is brought into elastic contact with the side surface of the hose.

"Operation" Accordingly, even in the present invention, the inner surface of the presser arm extending from the holder comes into elastic contact with the side surface of the hose to be tightened inserted into the tightening ring part, and the clamp body is tightened. Since it can be temporarily fixed at that location, the clamp body will not move carelessly on the hose.

Moreover, in the temporary fixing state of the present invention, the presser arm is extended with respect to the holder in an inclined state so that it can come into contact with the side surface of the hose, and the inner surface of the inclined presser arm is pressed against the side surface of the hose. Because it brings you into contact with
Because the length of the presser arm is not limited due to its structure, if the presser arm is set long, the diameter of the hose to be tightened will be small compared to the diameter of the tightening ring part in the expanded diameter state. Even in this case, the inner surface of the presser arm reliably comes into elastic pressure contact with the side surface of the hose, so that the temporary fixing function of the clamp body is fully exhibited.

Moreover, since the presser arm comes into elastic pressure contact with the hose surface from the side with its own inner surface, smooth movement is guaranteed even if the clamp body needs to be moved on the hose. Not only that, but there is no need to worry about damaging the hose surface.

``Embodiment'' Hereinafter, the present invention will be described in detail based on an embodiment illustrating the present invention.As shown in FIG. The clamp body 1 is composed of an annular tightening ring part 2 and a pair of grip parts 3a and 3b that control the enlarged diameter of the ring part 2.
Although it is possible to hold the pair of grip parts 3a and 3b close to each other via the holder 4,
The feature is that the holder 4 has the following configuration.

That is, in this embodiment, the holder 4 itself is formed into an inverted U-shaped cross section so that it can be easily fitted onto the pair of grip portions 3a and 3b that are close to each other. A pair of presser arms 5 are provided at both ends of one side wall defining the shape, and are inclined at a certain angle and can abut against the side surfaces of the hose.
5 are integrally extended, and the inner surface of each inclined presser arm 5 is brought into elastic pressure contact with the side surface of the hose.

In addition, in this embodiment, a gripping piece 6 having a relatively large area is integrally erected by welding or the like on the other side wall of the holder 4, and the large gripping piece 6 can be gripped with a tool or the like and pulled up. If so, place the holder 4 on the grip part 3.
The holder 4 is configured so that it can be easily removed from the grip portions 3a and 3b, and the holder 4 is configured to be easily removed from the grip portions 3a and 3b by visually observing the presence or absence of this large gripping piece 6. ing.

In order to confirm the presence or absence of such a problem, it is sufficient to make the gripping piece 6 a conspicuous size, but if necessary, the gripping piece 6 may be actively coated with fluorescent paint or the like. The gripping piece 6 is composed of the reflection plate itself.
Depending on the implementation, it is also possible to provide a reflective effect or to form a hole 6a or the like in a shape that can be easily recognized.

Therefore, using a hose clamp with such a configuration,
When tightening and fixing the rubber hose 7 to the end of the connecting pipe 8, as in the conventional case, the inverted U-shaped holder 4 is fitted onto the pair of grip portions 3a and 3b that are close to each other, and the tightening ring portion is 2 is forcibly expanded in diameter, and the rubber hose 7 is inserted into the expanded diameter ring portion 2. However, when the holder 4 is fitted onto the pair of grip portions 3a and 3b, as shown in FIG. , B, a pair of presser arms 5, 5 extending from both ends of one side wall of the holder 4 are in elastic contact with the side surface of the hose 7 from the lateral direction, so that the rubber hose 7 is inserted into the tightening ring portion 2. When inserted, the inner surfaces of the pair of presser arms 5, 5 come into direct elastic pressure contact with the surface of the rubber hose 7, and the clamp body 1 is reliably temporarily fixed at that location on the hose 7.

Moreover, in this embodiment, the presser arm 5 is extended with respect to the holder 4 in an inclined state so that it can come into contact with the side surface of the rubber hose 7, so that the inner surface of the inclined presser arm 5 is attached to the side surface of the hose 7. Since the construction is such that the length of the presser arm 5 is not limited due to its structure, if the presser arm 5 is set as long as possible, even if the tightening ring is expanded in diameter, Part 2
Even if the diameter of the hose 7 to be tightened is small compared to the diameter of the hose 7, the inner surface of each presser arm 5
Since the clamp firmly contacts the side surface of the clamp body, it is possible to sufficiently perform the temporary fixing function of the clamp body.

Furthermore, since the presser arm 5 comes into elastic pressure contact with the hose 7 surface from the lateral direction with its own inner surface, even if it becomes necessary to move the clamp body 1 on the hose 7, the clamp body 1 Not only is it ensured that the hose can be moved smoothly, but there is no fear of damaging the hose 7 surface at all.

Therefore, in this embodiment, when fitting the rubber hose 7 to the end of the connecting pipe 8, the clamp body 1 is absolutely prevented from moving carelessly on the hose 7, and the clamp body 1 and other From hose 7
Since the clamp body 1 can be temporarily fixed at the tightening point of the hose 7 after fitting the rubber hose 7 to the end of the pipe 8, there is no need to reset the clamp body 1 to the tightening point of the hose 7. becomes.

Thereafter, as shown in FIG.
3b, the pair of grip portions 3a,
3b is released, the tightening ring portion 2 contracts its diameter by its own elastic force and securely tightens the outer circumference of the rubber hose 7, so that the hose 7 is securely attached to the end of the connecting pipe 8. It will be tightened and fixed.

In addition, in the process of tightening and fixing the rubber hose 7, if there is a clamp body 1 whose holder 4 has not yet been removed, a relatively large gripping piece 6 is attached to the other side wall of the holder 4 as described above.
Since the gripping piece 6 stands out in a conspicuous manner, it can be easily confirmed that the holder 4 has not been removed. It can definitely be prevented.

In the above embodiment, the presser arm 5 that performs the temporary fixing function is made of the same material as the holder 4 and is integrally bent and molded, but as shown in FIGS. , 5 itself may be formed of a wire material separate from the holder 4, and the wire presser arm 5 may be later fixed to a predetermined location on one side wall of the holder 4 by welding or the like, depending on the implementation. .

Furthermore, as shown in FIG. 5, a pair of presser arms 5 are provided not only on one side wall of the holder 4 but also on both ends of the other side wall.
It is also optional, depending on the implementation, to provide the presser arm 5a on the other side and the presser arm 5 on the one side so that the side surfaces of the rubber hose 7 are simultaneously brought into elastic pressure contact from both sides. In particular, in this case, the temporary fixing force is doubled compared to the above embodiment, so that the temporary fixing state of the clamp body 1 on the hose 7 becomes even more reliable.

"Effects of the Invention" As described above, the present invention includes a holder that holds a pair of grip parts close to each other, and a presser arm that extends from the holder and comes into contact with the side surface of the hose. Since the inner surface of the holding arm is brought into elastic pressure contact with the side surface of the hose, unlike the holding arm of a conventional clamp, the length of the holding arm is not limited due to its structure. By setting the length as long as possible, even if the diameter of the hose to be tightened is considerably smaller than the diameter of the enlarged tightening ring, the inside surface of the long presser arm can accommodate this small diameter. Since the sides of the hose can be pressed against each other, it is now possible to fully utilize the temporary fixing function of the clamp body at all times.

Furthermore, since the inner surface of the presser arm is in elastic contact with the hose surface from the lateral direction, even if it becomes necessary to move the clamp body on the hose, unlike conventional clamps, it can be moved smoothly. Not only is this guaranteed, there is no need to worry about damaging the hose surface.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a hose clamp having a temporary fixing function according to an embodiment of the present invention, and FIG. B is the same cross-sectional view, the third
The figure is a sectional view showing the state in which the rubber hose is tightened with the tightening ring part, Figures 4A and B are perspective views of the holder showing another example of the presser arm, and Figure 5 is a clamping of yet another example of the presser arm. FIG. 3 is a cross-sectional view showing the main body temporarily attached to a rubber hose. 1... Clamp body, 2... Tightening ring part, 3
a, 3b...Grip part, 4...Holder, 5,
5a... Presser arm, 6... Gripping piece, 7... Rubber hose, 8... Connection pipe.

Claims (1)

[Scope of utility model registration request] The clamp body is composed of an annular tightening ring portion and a pair of grip portions that handle the expanding diameter of the ring portion, and is configured to be able to hold the pair of grip portions close to each other via a holder. In the hose clamp, a presser arm is extended from the holder at an appropriate position so as to be inclined from the holder and come into contact with the side surface of the hose, and the inner surface of the inclined presser arm is brought into elastic pressure contact with the side surface of the hose. A hose clamp with a temporary fixing function.