JPH11875A - Belt fastener - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a belt fastener having a detachable long operating member capable of generating strong fastening force and enduring abrupt rotational movement when a belt is unfastened. SOLUTION: A belt fastener has at least a hook mounting metal fitting 2 and an operating lever 3, and the operating lever 3 is provided with a connection 4 being rotationally moved to the hook mounting metal fitting 2 by an operating long member 5 attached/detached to/from the connection 4 to fasten/ unfasten a belt. To prevent the long member 5 from being slipped off when unfastened, a locking means 6 is provided between the connection 3 and the long member 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt fastener used for fastening a large article such as a truck mounted on a transport machine such as a ship by a tensioned belt and fixing the article in the transport machine.

[0002]

2. Description of the Related Art As a belt fastener of this kind, there is a real belt 1.
Japanese Patent Application Publication No. 43567, Japanese Utility Model Publication No. 2-18371, Japanese Utility Model Publication No. 3-34489, and Japanese Utility Model Publication No. 4-48937 have been known.

In this belt fastener, an operation lever is rotatably supported by a coupling shaft with respect to a hook mounting bracket, and the operation lever is provided with a first belt winding shaft and a second belt belt winding shaft. A basic structure is such that one end is bent through the first belt winding shaft and wound around the second belt winding shaft. When the operation lever is rotated toward the hook mounting bracket, the belt is released and the belt is loosened.When the operation lever is rotated toward the belt opposite to the hook mounting bracket, the belt is tightened. Become. The tightening force of the belt is the first
A moment for rotating the operation lever via a belt winding shaft is generated. In the release state, the direction of the moment becomes a direction in which the belt is further loosened, and in the tightening state, the direction of the moment is on the belt side and the tightening state is self-held so that the coupling shaft and the first
The positional relationship of the belt winding shaft is determined.

[0004] When a heavy object such as a large truck mounted on a ship or the like is fastened and fixed by using the belt fastener having such a structure and operation as described above, in order to achieve reliable fixing, It is necessary to generate a large tightening force. For this reason, a belt fastener capable of generating a large tightening force such as an operating load of 2 tons or more (a breaking load of 8 tons or more) is used. In this case, it is difficult to generate an operation force necessary for releasing or tightening the belt by operating only the short operation lever. Therefore, a long member such as a square pipe is inserted into the tapered portion at the tip of the operation lever, and the operation lever is substantially elongated to generate an operation force required for release or tightening.

[0005]

However, when the belt fastener is released with the square pipe inserted into the tapered portion at the tip of the operating lever, the positional relationship between the coupling shaft and the first belt winding shaft is required. Since the direction of the determined moment switches from the state of maintaining the self-holding of the operating lever to the released state, after exceeding the switching point, the operating lever will suddenly rotate around the coupling axis to the released state. I do. If the working load of the belt fastener is less than 2 tons, abrupt rotation can be prevented by human power, but if the working load is a strong belt fastener of 2 tons or more, human power alone It is difficult to control, and there is a risk that the square pipe may come off from the tip of the operation lever due to centrifugal force generated by the rotation of the operation lever toward the release position.

Therefore, instead of inserting a long member such as a square pipe into the operating lever, it is conceivable to lengthen the operating lever itself. However, there is a restriction on the length of the operating lever itself, and a predetermined tightening force is generated. To do so, it is necessary to operate the operation lever with a strong force, and the belt fastener is increased in size and weight, resulting in extremely poor handling.
Therefore, as described above, the detachable type in which the elongate member can be attached to and detached from the operation lever is preferable. However, in the case of a powerful belt fastener, the elongate member may fall off the operation lever when released.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to generate a strong fastening force and to release a belt when releasing a belt. An object of the present invention is to provide a belt fastener having a detachable long operating member capable of withstanding a sudden rotation of the belt.

[0008]

According to a first aspect of the present invention to solve the above-mentioned problems, the present invention has at least a hook mounting bracket and an operation lever, wherein the operation lever is provided with a connecting portion, A belt fastener for tightening and releasing a belt by rotating the operation lever with respect to the hook mounting bracket by a long member for operation that is attached to and detached from a connecting part, wherein the connecting part and the long A locking means is provided between the measuring member and the measuring member.

According to a second aspect of the present invention, a hook mounting bracket, an operating lever rotatably supported by a coupling shaft provided on the hook mounting bracket, and A first belt wrapping shaft and a second belt wrapping shaft provided on the operation lever; a belt wound around the second belt wrapping shaft in a bent state via the first belt wrapping shaft; and a belt provided on the operation lever. Connecting part, a long member for operation that is detachably fitted to the connecting part, and is provided between the connecting part and the long member to maintain the fitting but is detachable. When the long member is fitted to the operation lever, and the operation lever in the tightened state is rotated toward the hook mounting bracket, the tension of the belt is reduced. Rotation on operating lever Orientation Mento is a belt pretensioner switching from self-retaining position in a direction towards the open state which tries to keep the tightened state.

[0010] The invention according to claim 3 is based on claim 1.
Or 2, wherein the locking means comprises a locking projection provided on one of the connecting portion or the operating member, and an L-shaped groove for locking the locking projection formed on the other. Consisting of

[0011] The invention according to claim 4 is based on claim 1.
Or 2, wherein the locking means includes a locking projection that is provided on one of the connecting portion or the operating member and that can be retracted,
It has a locking hole for locking the locking projection formed on the other side.

The invention according to claim 5 is the first invention.
Or in 2, wherein the locking means is screwed with the connecting portion or the operating member.

The invention according to claim 6 is the first invention.
Or In 2, the working load of the belt fastener is 2 tons or more. In the case of a belt fastener having a working load of 2 tons or more, the turning force of the operation lever due to the belt tension at the time of release increases, so that the locking means effectively acts between the connecting portion and the long member.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a central longitudinal sectional view when the belt fastener of the present invention is in a tightened state.
FIG. 3 is a top view of the belt fastener of FIG. 1, and FIG. 3 is a central longitudinal sectional view when the belt fastener of the present invention is in a released state. First, an example of the structure of the belt fastener will be described with reference to FIGS.

1 and 2, a belt fastener 1 has a hook mounting bracket 2, an operating lever 3, a connecting portion 4 formed on the operating lever 3, and an operating long detachable to the connecting portion 4 as main parts. It is provided with a length member 5 and locking means 6 between the connecting portion 4 and the long member 5.

The hook mounting bracket 2 has a pair of bent plates 2a and 2b arranged in a U-shape, and a hook 12 is rotatably mounted via a pin 11 at a portion where one end is narrow, and the other end is provided. The connecting shafts 13, 13 which rotatably support the operation lever 3, which will be described later, are inserted into a portion having a large space between the plates 2a, 2b.

The operation lever 3 has a U-shape in which a back plate 3b is connected between two side plates 3a, and each of the two side plates 3a is attached to the hook by the coupling shafts 13, 13. It is rotatably supported by the metal fitting 2. Each of the side plates 3a around the connecting shafts 13, 13 is provided with outwardly bulging portions 14, 14 (see FIG. 2).
The heads 3 and 13 do not protrude inside the side plate 3a.

A first belt wrapping shaft 15 and a second belt wrapping shaft 16 are provided between the two side plates 3a. A guide plate 17 is rotatably attached to the first belt winding shaft 15. The guide plate 17 has a U-shape in which two side plates 17a are connected by a bottom plate 17b, and is rotatable in the operation lever 2 to guide the belt 18. For guiding the belt 18, the guide plate 17 has a guide formed between the bottom plate 17 b and the connecting bar 19.

One end of the belt 18 passes through a guide between the bottom plate 17b and the connecting bar 19, and passes through the first belt winding shaft 15
Is wound around the second belt winding shaft 16,
The belt is wound around the first belt winding shaft 15, passes through the guide between the bottom plate 17b and the connecting bar 19, and the entrance side belt and the exit side belt are overlapped and joined. Belt 1
Reference numeral 8 denotes a bent state at the first and second belt winding shafts 15 and 16. In the tightened state of FIG. 1, the bending of the belt 18 becomes large and the belt 18 is tightened, but in the released state of FIG. 3, the belt 18 becomes so small that the bending of the belt 18 is almost eliminated, and the belt 18 is released. .

In the tightened state shown in FIG. 1, the operating lever 3 is rotated toward the belt 18 so that the first belt winding shaft 15 is located above the coupling shaft 13 and the first belt winding shaft 15
The rotational moment generated by the belt tension F acting on the operation lever 3 is in a direction to bring the operation lever 3 into a tightened state. Therefore, the second belt wrapping shaft 16 abuts against a stopper portion 17c of the guide plate 17, which will be described later, so that the tightened state of the operation lever 3 is held by itself. By rotating the operation lever 3 as indicated by the two-dot chain line, the rotation position where the first belt winding shaft 15 coincides with the line of force from the coupling shaft 13 to the hook 12 is the switching point.
With the tension of 8, the operation lever 3 tries to go to the release state of FIG. At this time, a sharp turning force is generated on the operation lever 3.

The connecting portion 4 is a short rod, and the operating lever 3
At the center of the rear plate 3b. The operation long member 5 has a long pipe shape, and is detachable by being fitted into the connecting portion 4. The L-shaped groove 21 at the base of the long member 5 and the protrusion 22 at the base of the connecting portion 4 constitute the locking means 6. In a state where the projection 22 is located at the open portion 21 a of the L-shaped groove 21, the long member 5 is detachable by fitting into the connecting portion 4. In a state where the long member 5 is rotated, for example, by 45 ° and the projection 22 is positioned at the bent portion 21 b of the L-shaped groove 21, the long member 5 is in a locked state in which the long member 5 does not come out of the connecting portion 4.

Next, the operation of the belt fastener 1 having the above-described structure will be described with reference to FIGS. In FIG. 1, when the belt 18 is changed from the tightened state to the released state, the long member 5 is fitted into the connecting portion 4, the protrusion 22 is inserted into the open portion 21a of the L-shaped groove 21, and the long member 5 is The projection 22 is rotated to bring the projection 22 into the bent portion 21b of the L-shaped groove 21 as shown in the locking state. Then, the long member 5 is turned toward the hook mounting bracket 2 as indicated by an arrow a1. Then operation lever 3
Moves from the self-holding state in which the tightening state is to be maintained to the switching point of the two-dot chain line (the point where the first belt winding shaft 15 is located on the line of force from the coupling shaft 13 to the hook 12). After this switching point, the operation lever 3 suddenly tries to rotate in the direction of arrow a2 due to the tension of the belt 18. At this time, the protrusion 22 is locked by the L-shaped groove 21, so that the person only has to control the speed of the operation lever 3, which is about to turn rapidly, by putting his or her hand on the long member 5.
The long member 5 does not fall off due to the centrifugal force generated by the sudden rotation.

In FIG. 3, when the belt 18 is changed from the released state to the tightened state, the long member 5 may simply be fitted into the connecting portion 4. Of course, as shown in FIG.
Into the open portion 21a of the L-shaped groove 21 and rotate the long member 5 to bring the projection 22 into the bent portion 21b of the L-shaped groove 21 in the illustrated locked state. When the long member 5 is rotated in the direction of arrow a3 toward the belt 18, the belt 18 is rotated by the first and second belt winding shafts 15, 16.
And the first,
The belt 18 is largely bent at the second belt winding shafts 15 and 16, and the belt 18 is in a tension state. At this time, after the switching point of the two-dot chain line in FIG. 1, the operation lever 3 enters a self-holding state in which the tightening state is maintained. There is less fear of getting out of 4 than at the time of release. Further, when the locking means 6 is provided at the base of the connecting portion 4, the long member 5 can be removably fitted without being locked by the locking means 6. You can use it or not.

FIG. 4 shows another locking means 106. A protruding and retractable locking projection 110 in which a ball is housed in a hollow portion at the base of the connecting portion 104 having a center rod shape so as to be protruded from the surface but not fall off, and is urged in a protruding direction by a winding spring;
The locking means 106 is constituted by the locking hole 111 of the pipe-shaped long member 105. The locking force of the locking projection 110 is determined by the force of the winding spring, and is set to such an extent that the operating lever 3 does not fall off when the operating lever 3 is opened, but is released by a human operating force.

FIG. 5 shows still another locking means 206. A projecting rod is protruded from the root portion of the hollow portion of the hollow pipe-shaped connecting portion 204 toward the surface, and the projecting bar is biased in the projecting direction by a leaf spring that is bent and stored in a U-shape in the hollow portion and stored. Flexible locking projection 210 and pipe-shaped long member 2
The locking means 206 is composed of the locking hole 211 of FIG. The locking force of the locking projection 210 is determined by the urging force of the leaf spring, and is set to such a degree that the operating lever 3 does not fall off when it is suddenly rotated to open, but is released by human operation force.

FIG. 6 shows still another locking means 306. Male screw 3 provided at the outer root of rod-shaped connecting portion 304
10 and a female screw 311 that can be screwed into the male screw 310 on the inner periphery of the pipe-shaped long member 305, a screw-type locking means 306 is formed. Male screw 310 and female screw 31
Numeral 1 is such that it can be screwed in several times so that operability is not impaired.

As described above, there are various types of locking means. Further, instead of separately providing the connecting portion 4 for the operating lever 3, the connecting portion may be formed integrally with the operating lever by tapering the tip of the operating lever. Further, the long member is not limited to a round pipe, and may be a deformed pipe having at least a tip at an angle. Further, the connecting portion may be a pipe and the long member may be a rod. In short, it is important to provide a locking means between the connecting portion and the elongate member such that the elongate member does not fall off due to sudden rotation of the operation lever.

As the belt fastener 1 described above, in addition to the hook mounting bracket 2 and the operation lever 3, a guide plate 1
Although the type having 7 is described, the guide plate 17 may be omitted, and the belt fastener 1 having only the hook mounting bracket 2 and the operation lever 3 may be used. Also, the type in which the coupling shaft 13 and the first belt winding shaft 15 are provided separately has been described,
The connecting shaft 13 may be a single long shaft and may also be used as the first belt winding shaft. Also, the second belt winding shaft 16 is
The belt 18 may be movable with respect to the belt winding shaft 15 so that the belt 18 is sandwiched between the first belt winding shaft 15 and the second belt winding shaft 16. In short,
Having at least a hook mounting bracket 2 and an operation lever 3;
When the operation lever is rotated with respect to the hook mounting bracket to release the belt, the operation lever 3 tends to rapidly rotate due to the belt tension from the self-holding state of the tightening through the switching point. Type of belt fastener 1
Then, the present invention can be applied.

[0029]

As described above, according to the first and second aspects of the present invention, the operation lever itself has a structure having the operation long member which is attached to and detached from the connecting portion of the operation lever. A large operating force can be easily generated by the long member without making it long. Also, when the operating lever is rotated from the tightened state to the released state, even if a sharp turning force is generated when switching from the self-holding state that maintains the tightened state to the released state, the locking means is used. The long member does not fall out of the operation lever, and the safety of work can be ensured.

According to the third to fifth aspects of the present invention, the elongate member can be easily attached to and detached from the connecting portion of the operation lever, and the elongate member can be easily connected to the connecting portion by rapid rotation when the belt fastener is released. Can be achieved by balancing the conflicting functions of not falling off.

According to the invention of claim 6, it is possible to solve the problem that the long member comes off due to the strong belt fastener as in the case of fixing a large truck in a ship.

[Brief description of the drawings]

FIG. 1 is a central longitudinal sectional view when a belt fastener of the present invention is in a tightened state.

FIG. 2 is a top view of the belt fastener of FIG.

FIG. 3 is a central longitudinal sectional view when the belt fastener of the present invention is in a released state.

FIG. 4 is a partially enlarged view showing another locking means.

FIG. 5 is a partially enlarged view showing still another locking means.

FIG. 6 is a partially enlarged view showing still another locking means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Belt fastener 2 Hook mounting bracket 3 Operation lever 4 Connecting part 5 Long member for operation 6 Locking means 13 Coupling shaft 15 First belt wrapping shaft 16 Second belt wrapping shaft 17 Guide plate 18 Belt

Claims (6)

[Claims] 1. An operating lever having at least a hook mounting bracket and an operating lever, wherein the operating lever is provided with a connecting portion, and the operating lever is connected to the hook mounting bracket by a long operation member detachably attached to the connecting portion. A belt fastener for tightening and releasing a belt by rotating with respect to the belt, wherein a locking means is provided between the connecting portion and the elongated member. 2. A hook mounting bracket, an operation lever rotatably supported by a coupling shaft provided on the hook mounting bracket, and a first belt winding shaft and a second belt winding shaft provided on the operation lever. And a belt wound around the second belt winding shaft in a bent state via the first belt winding shaft, a connecting portion provided on the operation lever, and detachably fitted to the connecting portion. An operation elongate member, and an elongate member provided between the connecting portion and the elongate member, the engaging means being adapted to maintain the fitting but being detachable; and Mating members,
When the operation lever in the tightened state is rotated toward the hook mounting bracket, the direction of the rotation moment exerted on the operation lever by the tension of the belt is released from the self-holding position in which the tightened state is to be maintained. Belt fastener that switches to the direction toward the state. 3. An L-shaped groove for locking the locking projection provided on one of the connecting portion or the operating member and the locking projection formed on the other of the connecting portion or the operating member. The belt fastener according to claim 1 or 2, wherein: 4. The locking means for locking a retractable locking projection provided on one of the connecting portion or the operating member and the locking projection formed on the other. 3. The belt fastener according to claim 1, wherein the belt fastener comprises a hole. 5. The belt fastener according to claim 1, wherein the locking means is screwed with the connecting portion or the operating member. 6. The belt fastener according to claim 1, wherein a working load of the belt fastener is 2 tons or more.