JPH0617984A - Binding band - Google Patents

Abstract

PURPOSE:To improve the adhesiveness of a clamp plate, and to securely prevent removal of a binding band by providing a clamp member around a material to be clamped, and by engaging the engagement stop projection of an arc lever provided on one end of the clamp member, with the engagement stop hole of the clamp member to clamp a material to be clamped. CONSTITUTION:When a constant velocity joint boot and the like is clamped and is fixed, after a binding band 1 is put on the outer peripheral surface of the boot and the like, a clamp plate 2 is bent so that the clamp plate 2 is reversed outward with the fixed end of the clamp plate 2 welded to a lever 3 serving as a fulcrum P, while an engagement stop protruded part 3b of the lever 3 is engaged with an engagement stop part 5 to be stopped through an engagement stop hole 5a, and the clamp plate 2 is formed into an annular shape. The clamp plate is then rotated inward at a fulcrum of an engagement stop projection 3a of the lever 3, to contract the diameter of the clamp plate 2, and the constant velocity joint boot is clamped, while the inner surface of the lever 3 is brought into pressure contact with the outer surface in the vicinity of the fixed end of the clamp plate 2. Lug pieces 4a... on both sides of a clamping fitting 4 are bent inward to maintain the superimposed surface between the clamp plate 2 and the lever 3, and removal of the clamp plate 2 is thus prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a binding band used for tightening a dustproof cover of a hose and a universal joint.

[0002]

2. Description of the Related Art Conventionally, a binding band is, for example, Japanese Patent Publication No.
As shown in No. 22039, the convex side of the arc-shaped lever is fixed to one end of the elongated strip-shaped member, and the other end of the strip-shaped member is engageable with the protrusion protruding from the outer side surface of the lever. Through holes are provided. A stopper projecting outward is fixed to the inner surface near the center of the belt-shaped member near the through hole. Then, in order to attach the binding band configured as described above to the bound object, first, the binding band is circulated around the tightened portion of the bound object, and the projection is engaged with the through hole to join the band-shaped member. To do. Then, in this state, the lever is turned upside down using the projection as a fulcrum and folded back.As a result, the concave side of the lever is overlapped with the outer surface of the belt-shaped member, and the stopper is bent to hold the joined state of the belt-shaped member. There is.

[0003]

However, in the above binding band, when the binding band is bound to the binding object, an empty space is generated near the binding band, and as a result, a part of the binding object is bound. There was a part that was not done. Therefore, the adhesion of the binding band may be deteriorated and the binding band may come off.

Further, the connection state of the belt-shaped member is held by bending the stopper at the overlapping position so that the belt-shaped member and the lever are not attached, but the lever slips out of the stopper due to the problem of the bent state of the stopper. Finally, there was the problem that the binding band came off again.

The present invention has been made to solve the above problems, and an object of the first invention is to improve the adhesiveness by eliminating an empty space between the tightening plate and the object to be tightened and to bind the object to be bound. It is to provide a binding band capable of reliably preventing the binding band from coming off from the body.

A second object of the present invention is to provide a binding band capable of reliably preventing the binding band from coming off the bound object by preventing the lever from slipping out of the holding member.

[0007]

In order to solve the above-mentioned problems, a first aspect of the present invention is a band-shaped foldable tightening member having a locking hole on one end side, and is fixed to the other end of the tightening member. A state in which a mounting end and a free end are provided at both ends, and an arc-shaped lever having a locking projection formed on the mounting end and fixed to one end of the tightening member, and the tightening member is arranged around the object to be tightened. so,
When the object to be tightened is tightened by engaging the locking projection of the lever with the locking hole of the tightening member, the holding member that holds the tightened state and the one end side of the tightening member are provided with the locking hole 5a. The gist of the present invention is to have a projecting piece that extends further than the above.

According to a second aspect of the invention, a band-shaped foldable tightening member having a locking hole on one end side, and a mounting end and a free end fixed to the other end of the tightening member are provided at both ends. The arc-shaped lever having a locking projection formed on the mounting end and the fastening member fixed to one end of the tightening member, and the tightening member being arranged around the object to be tightened, are inserted into the locking hole of the tightening member. A holding member that holds the tightened state when the object to be tightened is tightened by engaging the locking projection of the lever, and the holding member that is formed on the lever or the tightening member and is locked by the holding member. The gist of the present invention is to provide a retaining member for preventing the held tightening member from slipping through.

[0009]

Therefore, according to the first aspect of the present invention, the tightening member is arranged around the object to be tightened, and the object to be tightened is tightened by engaging the locking projection of the lever with the locking hole of the tightening member. . The holding member holds the tightened state, and the projecting piece eliminates an empty space between the object to be tightened and the tightening member, so that the adhesion is improved and the tightening can be performed securely.

Further, according to the second aspect of the invention, the tightening member is arranged around the object to be tightened, and the object to be tightened is tightened by engaging the locking projection of the lever with the locking hole of the tightening member. . The holding member holds the tightened state, and the locking member is prevented from being released from the tightened holding state by being locked by the holding member.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment embodying the present invention will now be described with reference to FIGS.
This will be described with reference to FIG. As shown in FIG. 1 and FIG. 2, a binding band 1 made of a metal has a convex side of an arc-shaped lever 3 on the inner side surface at the working end of a tightening plate 2 as a tightening member, and the same tightening. The inner surface of the plate 2 at the fixed end is integrally fixed to the convex surface of the fastener 4 by spot welding. Narrow and thin ribbon-shaped tightening plate 2
Is linearly formed from the working end to the center, and is formed in a semi-circular shape from the center of the fastening plate 2 to the fixed end. A locking portion 5 is formed on the outer side surface of the fastening plate 2 at a position near the fixed end so as to project outward by pressing. As shown in FIG. 4, a locking hole 5 a communicating with the inside of the tightening plate 2 is penetrated from the working end side of the locking portion 5. From the locking hole 5a of the tightening plate 2 to the fixed end side,
A projecting piece 2a having the same width and plate thickness as the tightening plate 2 is provided so as to project.

As shown in FIGS. 1 and 2, the ribbon-shaped lever 3 having a narrow width and a thin wall has an outer surface on the inner surface of the operating end of the tightening plate 2 from the vicinity of the center in the longitudinal direction to the outer end. Abutted. As shown in FIG. 5, a stopper piece 3a is formed by bending the outer end of the lever 3 so as to project outward. On the other hand, a locking projection 3b that can be locked in the locking hole 5a of the locking portion 5 is provided on the inner end surface of the lever 3 near the center in the width direction. The stopper piece 3
The operating end of the tightening plate 2 is in contact with a.

As shown in FIGS. 1 and 2, the narrow and thin stopper 4 is formed in an arc shape.
The outer surface of the is contacted with the inner surface of the tightening plate 2.
A pair of ear pieces 4a projecting outward are bent and formed at both ends of the side end surface of the stopper fitting 4, and as shown in FIG. 3, the ear pieces 4a facing each other become wider as they go outward. ing. Ear pieces 4 a at the base end of the stopper 4 are located near both sides of the locking portion 5. Then, in a state where the tightening plate 2 and the lever 3 are overlapped with each other, the pair of ear pieces 4a on the base end side of the stopper 4 are bent in the radial direction of the tightening plate 2 to be locked to the stopper piece 3a. The clamp plate 2 and the lever 3 are held in a superposed state.

Next, the binding band 1 thus constructed
The method of tightening the slab to a tightening portion such as a constant velocity joint boot used in an automobile will be described. As shown in FIG. 7, the constant velocity joint boot 7 formed in a cylindrical shape is attached so that the inner side surface of the binding band 1 is applied to the tightening portion on the outer peripheral surface. Then, the fixing end of the tightening plate 2 welded to the lever 3 is bent so as to be turned outward with the fulcrum P as a fulcrum, and the locking projection 3b of the lever 3 is locked through the locking hole 5a. The tightening plate 2 is looped by being locked to the portion 5. Next, as shown in FIG. 8, the lever 3 is rotated inward with the locking projection 3a of the lever 3 as a fulcrum. Then, the tightening plate 2 is reduced in diameter, the constant velocity joint boot 7 is tightened, and the inner side surface of the lever 3 is pressed against the outer side surface near the fixed end of the tightening plate 2. Then, as shown in FIG. 5, the ear piece 4a of the fastener 4 is bent inward to hold the overlapping surface of the tightening plate 2 and the lever 3. As a result, the stopper piece 3a at the outer end of the lever 3 prevents the fastening plate 2 from coming off the constant velocity joint boot 7 by the bent ear piece 4a. Further, as shown in FIG. 6, in the vicinity of the overlap between the tightening plate 2 and the lever 3, the projecting piece 2a is pressed against the space portion A where the tightening plate 2 is not pressed against the outer peripheral surface of the constant velocity joint boot 7. It

As described above, in the binding band 1 of the present invention, after the fastening plate 2 is fastened to the constant velocity joint boot 7, the ear piece 4a of the fastener 4 is bent inward, so that the constant velocity joint is bent. The fastening state to the boot 7 is maintained, and the binding piece 1 is prevented from coming off the constant velocity joint boot 7 by the stopper piece 3a of the lever 3.

Further, unlike the conventional case, the tightening plate 2 and the projecting piece 2a can be applied to the outer peripheral surface of the constant velocity joint boot 7 without creating a gap, and the outer peripheral surface of the constant velocity joint boot 7 can be evenly and securely attached. Can be tightened. Therefore, the binding band 1 is prevented from coming off from the constant velocity joint boot 7, and the projecting piece 2a and the stopper piece 3a can prevent double coming off.

Furthermore, since the lever 3 is spot-welded to the tightening plate 2 while the operating end of the tightening plate 2 is in contact with the stopper piece 3a of the lever 3, the purpose of the lever 3 and the tightening plate is to bother. The lever 3 can be easily positioned without marking the welding position on 2, and spot welding can be easily performed. As a result, the binding band 1 can be smoothly manufactured, and the workability at the time of manufacturing can be improved.

The present invention is not limited to the above embodiment,
The following modifications may be made without departing from the spirit of the present invention. (1) In the above embodiment, the binding band 1 is made of metal, but the binding band 1 made of, for example, synthetic resin may be used instead of this material.

(2) In the above embodiment, the lever 3 is provided with the stopper piece 3a, but a stopper piece projecting outward by bending the fixed end of the tightening plate 2 may be provided.

[0020]

As described above in detail, the first object of the present invention is to improve the adhesion by eliminating the empty space between the tightening plate and the object to be tightened, and to ensure that the binding band comes off from the object to be bound. There is an excellent effect that can be prevented.

Further, according to the second aspect of the present invention, by preventing the lever from slipping out of the holding member, it is possible to reliably prevent the binding band from coming off from the bound object.

[Brief description of drawings]

FIG. 1 is a side view showing the entire binding band in this embodiment.

FIG. 2 is likewise a plan view showing the entire binding band.

3 is a sectional view taken along the line AA in FIG.

FIG. 4 is likewise a vertical sectional view of a locking portion.

FIG. 5 is an enlarged perspective view of an essential part showing a state in which the ear piece is bent and locked to the stopper piece.

FIG. 6 is an enlarged perspective view of essential parts showing a state in which the protrusion is pressed against the constant velocity joint boot.

FIG. 7 is a vertical cross-sectional view showing a state before the binding band is fastened to the constant velocity joint boot.

FIG. 8 is a vertical cross-sectional view showing a state after the binding band is fastened to the constant velocity joint boot.

[Explanation of symbols]

2 ... Tightening plate as a fastening member, 2a ... Projection piece, 3 ... Lever, 3a ... Stopper piece as a locking member, 4 ... Stopper fitting as a holding member, 5a ... Locking hole

Claims (2)

[Claims] 1. A band-shaped foldable tightening member (2) having a locking hole (5a) on one end side, and a fixing member fixed to the other end of the tightening member (2) with a mounting end and a free end on both ends. An arc-shaped lever (3) having a locking projection (3b) formed on the mounting end and fixed to one end of the fastening member (2), and the fastening member (2) is fastened to the fastened body (7). On the other hand, in the state of being arranged in a circle, the to-be-tightened body (7) was fastened by engaging the locking projection (3b) of the lever (3) with the locking hole (5a) of the tightening member (2). At this time, a holding member (4) for holding the tightened state and a projecting piece (2a) provided by extending one end side of the tightening member (2) beyond the locking hole (5a) are provided. Characterized binding band. 2. A band-shaped foldable tightening member (2) having a locking hole (5a) on one end side, and the other end of the tightening member (2), the mounting end and the free end being on both ends. An arc-shaped lever (3) having a locking projection (3b) formed on the mounting end and fixed to one end of the fastening member (2), and the fastening member (2) is fastened to the fastened body (7). On the other hand, in the state of being arranged in a circle, the to-be-tightened body (7) was fastened by engaging the locking projection (3b) of the lever (3) with the locking hole (5a) of the tightening member (2). At this time, the holding member (4) for holding the tightened state and the lever (3) or the tightening member (2) are formed,
A binding band comprising: a locking member (3a) which is locked to the holding member (4) and prevents the tightening member (2) held by the holding member (4) from slipping through.