JP2594978Y2 - Tightening band structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a tightening band for tightening and fixing a protective member provided on an outer peripheral surface of a cylindrical body such as a transmission shaft of a vehicle to the cylindrical body.

[0002]

2. Description of the Related Art An improved example of the conventional tightening band used for the above-mentioned application is disclosed in Japanese Utility Model Laid-Open No. 61-20905. In this example, a predetermined number of projections and corresponding engagement holes are formed in a long band plate-shaped band main body, and when the tightening band is wound around the protective member in an annular manner, first a temporary fixing is performed. Each of the predetermined projections is engaged with a predetermined engagement hole as a state, and the band is further tightened in a direction in which the diameter of the band is reduced using a known tightening jig. Each of the predetermined protrusions is configured to engage with a corresponding one of the predetermined engagement holes.

[0003]

However, in this tightening band, each projection 20 has a shape bent and raised in the longitudinal direction of the band main body 21 by pressing and bending as shown in FIG. . Therefore, at the time of the above-mentioned tightening, a force in the direction of the arrow in the figure is applied to the protrusion 20,
With the shape bent and raised in the longitudinal direction, the bending rigidity is low with respect to the force in the bending direction, and the projections 20 are raised in the bending direction (arrow direction) without being able to withstand the strength. Otherwise, the possibility that the band would be broken, the projection 20 would be disengaged from the engagement hole, and the tightened band would return to its original state was high. An object of the present invention is to provide a structure of a tightening band that can solve such a conventional problem.

[0004]

In order to achieve the above object, according to the present invention, in a tightening band for tightening and fixing a protection member provided on an outer peripheral surface of a cylindrical object, one of the band main bodies is provided. A locking portion and at least two or more locking holes into which the locking portion can be fitted and locked are formed at predetermined positions on the plate surface, and the locking portion is provided in the width direction of the band body. And a pair of locking claws which are cut and raised to face each other.
Cut and raised from a pair of opposite edges of one hole in the width direction
It is characterized by being extended .

The locking portion is formed at a first overlapping portion located below a portion to be overlapped when the tightening band is wound around the protective member in an annular shape, and is located above the portion to be overlapped. The locking hole is formed in a second overlapping portion to be formed, and the pair of locking claws are fitted to the edge of the first hole on the distal end side of the second overlapping portion when fitted in the locking hole. It is preferable that a notch portion that can be attached and engaged is formed, and a side surface facing the edge of the second hole opposite to the tip of the second overlap portion is formed in a tapered shape. is there.

[0006] The first overlapping portion is formed with a pair of rising pieces which are bent at the time of tightening to fix the tip of the second overlapping portion. Further, the first overlapping portion is provided with a fastening jig. It is preferable that a hooking projection and a hooking hole of a fastening jig are formed in the second overlapping portion.

[0007] Further, the locking portion is provided on the first overlapping portion.
And the locking hole is formed in the second overlapping portion.
Or a configuration in which two locking portions are formed in the first overlapped portion, and two locking holes are formed in the second overlapped portion,
Furthermore, the first overlapped portion and the second overlapped portion may each be formed with two or more of the locking portions and the locking holes.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. 1 to 7 show an embodiment of the present invention. In the drawings, reference numeral 1 denotes a tightening band according to the embodiment. The tightening band 1 of the present embodiment is for tightening and fixing a rubber boot as a protection member disposed on an outer peripheral surface of a cylindrical transmission shaft of a vehicle to the transmission shaft, and is a thin plate made of stainless steel, steel plate or the like. It is press-formed from a metal member.

In this embodiment, one locking portion 3 is formed on one plate surface of the band body 2 and a locking hole 4 with which the locking portion 3 can be fitted and locked on the other plate surface. Are formed. The locking portion 3 is formed in a first overlapping portion A located below a portion to be overlapped when the tightening band 1 is annularly wound around the protective member as described later, and is formed above the portion to be overlapped. The locking hole 4 is formed in the located second overlapping portion B.

As shown in FIG. 3, the locking portion 3 is composed of a pair of locking claws 5, 5 cut and raised in the width direction of the band body 2 and facing each other. This pair of locking claws 5, 5
As shown in FIG. 4, when fitted in the locking hole 4, the locking hole 4 is fitted and engaged with the first hole edge 6 on the tip end side of the second overlapped portion B. A recess 7 having a concave shape is formed.

The second overlapping portion B in the locking hole 4
The side surface 9 facing the second hole edge 8 on the opposite side to the tip of is formed in a tapered shape. When the second overlapped portion B is pulled in the direction of the arrow in FIG. The second hole edge 8 of the hole 4 can easily move over the locking claw 5 by the action of the tapered side surface 9.

In this embodiment, the locking holes 4 are formed at two places, a first locking hole 4a formed at the tip end of the second overlapping portion B and a second locking hole 4b near the center. Each locking hole 4 is formed as a pair of long holes corresponding to the pair of locking claws 5 of the locking portion 3.

As shown in FIGS. 1, 2 and 5,
A pair of rising pieces 10 are formed closer to the center of the first overlapping portion A than the locking portion 3 to bend at the time of tightening and fix the tip of the second overlapping portion B. Further, as shown in FIGS. 1 and 2, one end of a known fastening jig (not shown) is hooked closer to the center of the first overlapping portion A than the pair of rising pieces 10. Hooking projection 11
Further, on the tip side of each of the locking holes 4 of the second overlapping portion B, a locking hole 12 for locking the other distal end of the fastening jig is formed.

A procedure for tightening and fixing the rubber boot to the outer peripheral surface of the transmission shaft of the vehicle by the tightening band 1 having such a configuration will be described. First, as shown in FIG. 6, the tightening band 1 is wound around the rubber boot in an annular shape by using the bending of the tightening band 1, and the first overlapping portion A
Both ends are overlapped so as to be below the overlapping portion B. The degree of polymerization of the first polymerization section A and the second polymerization section B during the temporary fixing is as follows:
The locking claw 5 of the locking portion 3 is engaged with the first locking hole 4a of the second overlapping portion. In this temporary fixing state, as shown in FIG. 4, the notches 7 of the locking claws 5, 5 correspond to the first locking holes 4a.
Since the second overlapping portion B is fitted and engaged with the hole edge portion 6, it is possible to effectively prevent the tip of the second overlapping portion B from opening outward.

Next, one end of the fastening jig is hooked on the hooking projection 11 of the first overlap portion A which is disposed oppositely in FIG. The other end of the fastening jig is hooked, and a force is applied to fasten the hooking jig 11 in the direction in which the hooking projection 11 and the hooking hole 12 approach. Then, the locking claw 5 of the locking portion 3 which has been engaged with the first locking hole 4a of the second overlapping portion in the temporarily fixed state is turned by the fastening jig so that the second overlapping portion B in FIG. While the first overlapping portion A is also pulled in the direction of the arrow in the figure and relatively moves.

Therefore, the base of the tapered side surface 9 of the locking claw 5 first comes into contact with the second hole edge 8 of the first locking hole 4a, and then the first engagement is performed by the action of the tapered side surface 9. Stop hole 4a
Of the second hole 8 easily moves over the locking claw 5,
Finally, the locking claw 5 is fitted into the second locking hole 4b as shown in FIG. When the tightening force of the tightening tool is released in this state, the notch 7 of the locking claw 5 is engaged with the first hole edge 6 of the second locking hole 4b by a slight return.

In this tightened state, the pair of rising pieces 10 and 10 shown in FIG. 5 are bent toward the band body 2 (in the direction of the arrow in the figure), and the tip of the second overlapping portion B is fixed. By preventing the tip of B from opening outward, the tightening operation is completed.

In the embodiment constructed as described above, the pair of locking claws 5 of the locking portion 3 are cut and raised in the width direction of the band main body 2 as shown in FIG. Therefore, the strength against the force acting in the longitudinal direction of the band body 2 is high. Therefore, in the above tightened state, a reaction force acting on the tightening band 1 to return to the original state is exerted, and the first hole edge 6 of the second locking hole 4b presses the locking claw 5 by this reaction force. The force in the longitudinal direction of the band main body 2 can be reliably opposed, and there is no possibility of bending or breakage unlike the conventional example.

Further, the fastening can be performed by one-touch operation using a fastening jig, so that the fastening operation can be performed quickly.

The locking claw 5 has a notch 7 which can be fitted and engaged with the first hole edge 6 of the locking hole 4 at the time of temporary fixing. (2) Since the opening of the tip of the overlapping portion B can be effectively prevented, the workability of the subsequent tightening work is improved.

Further, since the side surface of the locking claw 5 facing the second hole edge 8 of the locking hole 4 is formed as a tapered side surface 9, the second locking hole 4a of the first locking hole 4a can be tightened. The edge 8 can easily move over the locking claw 5 by the action of the tapered side surface 9, and the workability is also improved in this respect.

Next, FIGS. 8 to 11 show another embodiment of the present invention. In the fastening band 1 of this embodiment, FIG.
In the first overlapped portion A, a first locking portion 3a is provided on a tip portion side, and a second locking portion 3b is provided on a central portion side, and two locking portions 3 are formed, A hooking projection 11 for the fastening jig is formed closer to the center than the two locking portions 3, and the rising piece 10 in the first embodiment is not provided.

In the second overlapped portion B, two first locking holes 4a and second locking holes 4b corresponding to the distance between the first locking portions 3a and the second locking portions 3b are provided. Locking holes 4 are provided. In the present embodiment, the engaging hole 12 of the fastening jig is formed closer to the center than the two engaging holes 4 in the second overlapping portion B. The first locking portion 3a
The shape of each locking claw 5 in the second locking portion 3b is the same as that of the first embodiment.

The tightening band 1 of this embodiment also performs the tightening operation in accordance with the first embodiment, but in the temporarily fixed state, the first locking portion 3a is locked as shown in FIG. The claw 5 is in a state of being engaged with the first locking hole 4a. Next, one end of the fastening jig is hooked on the hooking projection 11 of the first overlap portion A, and the other end of the fastening jig is hooked on the hook hole 12 of the second overlap portion B. Then, a force is applied to tighten the hooking projection 11 and the hooking hole 12 in a direction in which they approach each other. Thereby, the first locking hole 4a moves over the first locking portion 3a, and when the tightening is completed, the second locking portion 3b engages with the first locking hole 4a as shown in FIG. The first locking portion 3a is engaged with the second locking hole 4b.

In this embodiment, the same operation and effect as those of the first embodiment can be obtained, and when the tightening is completed, the second locking portion 3b is engaged with the first locking hole 4a and the second overlapping portion is formed. Since the opening of the portion B to the outside can be effectively prevented, the work of bending and fixing the pair of rising pieces as in the first embodiment becomes unnecessary, and the workability is further improved.

In the above embodiment, an example in which one or two locking portions 3 are provided is illustrated. However, the present invention is not limited to this. , And correspondingly, the locking holes 4 are also formed at two or more places, so that one tightening band 1
It is possible to tighten the protection members having various diameters. Also, the shapes of the hooking projection 11 and the hooking hole 12 may be various other shapes as long as they can correspond to the tightening jig, without departing from the scope of the present invention. It is needless to say that the modified example is possible.

[0027]

[Effect of the Invention] The present invention is configured as described above.
The following effects can be obtained. (1) Since the pair of locking claws of the locking portion are cut and raised in the plate width direction of the band main body, they have high strength against a force acting in the longitudinal direction of the band main body and are in a tightened state. Thus, it is possible to reliably oppose the reaction force acting on the locking claw. (2) One-touch tightening is possible with a tightening jig, so that the tightening operation can be performed quickly. (3) Even in a band with a narrow width, a pair of locking claws
It can be formed with high precision and can secure stable locking force
You.

[Brief description of the drawings]

FIG. 1 is a main part plan view showing a configuration of a tightening band according to a first embodiment of the present invention.

FIG. 2 is a partially cutaway side view of FIG.

FIG. 3 is an explanatory diagram illustrating a configuration of a locking claw of a locking portion.

FIG. 4 is an explanatory view showing an operation of a locking claw of a locking portion.

FIG. 5 is an explanatory diagram showing a configuration of a rising piece.

FIG. 6 is a partially broken explanatory view showing a state in which the tightening band is temporarily fixed.

FIG. 7 is a partially cutaway explanatory view showing a state when the tightening band is tightened.

FIG. 8 is a plan view of a main part showing a configuration of a tightening band according to a second embodiment of the present invention.

FIG. 9 is a partially cutaway side view of FIG. 8;

FIG. 10 is a partially broken explanatory view showing a state where the tightening band is temporarily fixed.

FIG. 11 is a partially cutaway explanatory view showing a state when the tightening band is tightened.

FIG. 12 is an explanatory view showing a configuration of a conventional locking claw of a tightening band.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tightening band 2 Band main body 3 Locking part 3a First locking part 3b Second locking part 4 Locking hole 4a First locking hole 4b Second locking hole 5 Locking claw A First overlapping part B Second Overlapping portion 6 First hole edge 7 Notch portion 8 Second hole edge 9 Tapered side surface 10 Rise piece 11 Hanging projection 12 Hanging hole

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F16B 2/08

Claims (7)

(57) [Scope of request for utility model registration] 1. A tightening band for tightening and fixing a protective member provided on an outer peripheral surface of a cylindrical object, wherein a locking portion is fitted to one plate surface of the band body, and the locking portion is fitted. at least two locations or more locking holes may engage are formed at a predetermined position, the locking portion comprises a pair of locking claws facing cut and raised in a plate width direction of the band body, the Pair of
The locking claws arranged in parallel are one in the width direction of the band body.
It is cut and raised from a pair of holes facing each other
The structure of the tightening band, which is characterized in that: 2. The locking portion is formed in a first overlapping portion located below a portion to be overlapped when the tightening band is wound around the protective member in an annular shape, and is located above the portion to be overlapped. The locking hole is formed in a second overlapping portion that is formed, and the pair of locking claws are configured to be in the second position when fitted in the locking hole.
A notch that can be fitted and engaged with the first hole edge on the tip side of the overlapping portion is formed, and a side surface facing the second hole edge opposite to the tip of the second overlapping portion is tapered. The structure of the fastening band according to claim 1, wherein the fastening band is formed in a shape. 3. The structure of the fastening band according to claim 2, wherein the locking portion is formed at one location in the first overlapping portion, and the locking hole is formed at two locations in the second overlapping portion. . 4. A tightening band structure according to claim 3, wherein said first overlapping portion is formed with a pair of rising pieces which are bent at the time of fastening to fix a tip of said second overlapping portion. 5. The fastening device according to claim 3, wherein said first overlapping portion is formed with a projection for fastening a fastening jig, and said second overlapping portion is formed with a fastening hole for a fastening jig. Tightening band structure. 6. The structure of a tightening band according to claim 2, wherein said first overlapping portion is formed with two locking portions, and said second overlapping portion is formed with two locking holes. . 7. The tightening band structure according to claim 2, wherein each of said first overlapping portion and said second overlapping portion is provided with at least two of said locking portions and said locking holes.