JP2003194274A - Fastening band - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fastening band capable of decreasing a diameter of a band member, and easily automating assembling. <P>SOLUTION: A tip end portion of a forked end portion 6 and a middle portion of a tongue-piece shaped end portion 7 of a band member 1 are outwardly bent to form locking pieces 5, and notch portions 4 are formed equidistant from a fastening edge 3 of a fastening member 2. The locking pieces 5 are locked to the notch portions 4, and both ends of the fastening member 2 equipped to the band member 1 are fixed to the band member 1. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tightening band mounted on a boot or the like for covering a constant velocity joint for a vehicle for tightening, more specifically, a tightening member straddling both ends of a band member formed in a ring shape. The present invention relates to a tightening band in which the band member can be reduced in diameter by crushing the tightening ears formed on the tightening member.

[0002]

2. Description of the Related Art An example of a conventional tightening band will be described with reference to the tightening band disclosed in Japanese Utility Model Laid-Open No. 1-158889. In FIG. 9, a tightening member 102 is positioned and attached to a metal band-shaped band member 101 formed in a ring shape, and the tightening ear 103 formed on the tightening member 102 is crushed to reduce the diameter of the band member 101. It is designed to fasten objects to be fastened (such as boots attached to the shaft). The band member 101 and the tightening member 102 are the both ends (or one end) of the tightening member 102.
At the fixing portion 104 formed in the above, the resistance welding is performed and fixed.

Further, in FIGS. 9 and 11, the band member 101 and the tightening member 102 position the fixing portion 104, so that the locking piece 105 is attached to the band member 101 at the front side of the fixing portion 104. Provided and tightening member 10
2, the locking holes 106 are provided respectively, and by locking these, the fixing portion 104 is positioned in a ring shape as a whole.

Further, in FIG. 9, both ends of the band member 101 are formed into a bifurcated end portion 107 and a tongue-shaped end portion 108. When the tightening ear 103 is crushed, the tongue-shaped end portion 108 has a bifurcated end portion. It is adapted to enter along the concave portion 109 of the portion 107 to eliminate the step. 10 and 11, in a state where the band member 101 and the tightening member 102 are fixed to each other in a ring shape, the tongue-shaped end portion 108 has the tightening ear 1.
03 is a recess 1 having a bifurcated end 107 with its tip extending across both ends of 03.
09, which prevents deformation and escape of the object to be tightened to the tightening ear 103 side.

Further, when the tightening ear 103 is crushed, the tongue-shaped end portion 108 enters along the recess 109 of the bifurcated end portion 107 to reduce the diameter of the band member 101 and eliminate the step. Therefore, the tightening ear 1 of the tightening member 102
03, one side 102a was longer than the other side 102b.

[0006]

However, for example, when tightening a boot covering a constant velocity joint for a vehicle,
When tightening a shaft having a relatively small diameter of 16 mm to 18 mm, there is a problem that the band member 101 cannot be made small due to the following reasons. That is, FIG.
In (a) and (b), on the bifurcated end 107 side of the band member 101, it is necessary to provide the locking piece 105 on the tightening ear 103 side from the fixing portion 104 (resistance welding portion). The fixing portion 10 is provided on the forked end portion 107 side of the band member 101.
4 and the length L for providing the locking piece 105 are necessary, so that there is a limit to shortening the length of the band member 101. Since the length L corresponding to the locking hole 106 and the fixing portion 104 of the tightening member 102 corresponding to the locking piece 105 and the fixing portion 104 of the band member 101 is required, the length of the tightening member 102 can be shortened. There is a limit. Further, the tightening member 102 is used as a common component even if the length of the band member 101 changes, and the tongue-shaped end portion 108 needs to be fixed across the tightening ear 103 of the tightening member 102. Accordingly, the position of the bifurcated end 107 is also determined, so that the tongue-shaped end 10
It is not possible to change the position of the fork 8 or the bifurcated end 107 with respect to the tightening member 102. Further, even if the position of the locking piece 105 is made as close as possible to the forked end portion 107 side, a space for welding is secured and the band member 10 is provided.
There is a limit in consideration of maintaining the strength of 1.

Further, the tightening ear 103 of the tightening member 102.
Since the lengths of the both side portions 102a and 102b are different, the tightening member 102 needs to have directivity, and it is difficult to automate the assembly. In particular, in FIGS. 10 and 11, when the positions (welding positions) of the fixing portions 104 on both sides of the tightening ear 103 are different, it is difficult to automate the assembly.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art and to provide a tightening band which can realize a reduction in the diameter of the band member and can easily realize automation of assembly.

[0009]

In order to solve the above problems, the present invention has the following constitution. That is, a metal band-shaped band member formed in a ring shape with both ends separated from each other, and a tightening ear that is attached to the band member straddling both ends of the band member and bent outward in a gate shape in the middle part. In the tightening band having a metal band-shaped tightening member capable of reducing the diameter of the band member by crushing the tightening ears, the one end side end part and the other end side middle part of the band member are bent outward to engage. Each stop piece is formed, and a locking portion for locking the locking piece is formed at a position equidistant from the tightening ear of the tightening member.The locking piece is locked to the locking portion and temporarily fixed to the band member. Both ends of the tightening member are fixed to the band member. Further, the fixing portion between the one end side of the band member and the end portion of the tightening member is formed near the one end side end portion of the band member. Further, the locking piece of the band member and the locking portion of the tightening member are locked so as to allow the band member to move in the radial contraction direction and to prevent the band member from moving in the radial expansion direction, and are temporarily formed into a ring shape. Characterized by being stopped. Also, due to the engagement between the engagement piece and the engagement portion,
The fixing portion is positioned when the band member and the tightening member are temporarily fixed in a ring shape.
Also, a forked end is formed on one end side of the band member, and a tip of the forked end is bent outward to form locking pieces on both sides, and the other end is a tongue end. Has been formed,
The tongue-shaped end portion is arranged so as to straddle the tightening ear, and a part of the side edge portion is cut and raised at an intermediate portion to form locking pieces on both sides. In this case, the forked end of the band member is characterized by being fixed to the end of the tightening member in the immediate vicinity of the forked notch. Further, when the tightening ears of the tightening member are crushed, the band member is reduced in diameter so that the tongue-shaped end portion enters the bifurcated notch portion of the bifurcated end portion and becomes flush.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. 1 is a front view of the tightening band, FIG. 2 is a perspective view of the tightening band, FIG. 3 is a perspective view of the tightening member and the band member, FIG. 4 is an explanatory view of both ends of the hand member, and FIGS. 6A and 6B are top views and front views of the tightening member in a component state, FIGS. 6A and 6B are top views and front views of a band member in a component state, and FIGS. 7A and 7B are tightening according to another example. FIG. 8 is a top view and a front view of a component state of the member.
(A) and (b) are the top views and front views of the component state of the band member which concerns on another example.

First, the overall structure of the tightening band will be described with reference to FIGS. 1 and 2. Reference numeral 1 denotes a band member, which is made of a metal strip material (for example, stainless steel material) formed in a ring shape with both ends thereof separated from each other.
Reference numeral 2 denotes a tightening member, which is formed of a metal band-shaped material (for example, stainless steel material) mounted across both ends of the band member 1. The tightening member 2 has a tightening ear 3 that is bent outwardly in a gate shape in the middle, and the tightening ear 3
The band member 1 is provided so that its diameter can be reduced by crushing. A notch 4 which is a locking portion is formed at a position equidistant from the tightening ear 3 of the tightening member 2, and the one end portion of the band member 1 and the middle portion of the other end portion are bent outward to hold the locking piece. 5 are formed respectively. The locking piece 5 of the band member 1 is locked to the notch 4 of the tightening member 2 and temporarily fixed to form a ring shape. Further, the fastening member 2 is fixed (resistance welded) and integrated with the band member 1 at both end positions. Further, the fixing portion 9 between the one end side of the band member 1 and the end portion of the tightening member 2 is formed in the vicinity of the one end side end portion of the band member 1, and the lengths of the band member 1 and the tightening member 2 are mutually different. To achieve a smaller diameter. Further, the locking piece 5 of the band member 1 and the notch 4 of the tightening member 2 are locked so as to allow the band member 1 to move in the diameter reducing direction and disable the movement in the diameter expanding direction. After being temporarily fixed in a fixed shape, the fastening members 2 are fixed at both end portions.

The specific structure of the tightening band will be described below with reference to FIGS. In FIG. 3, a forked end (fork-shaped end, V
Notch-shaped end portions, U-shaped end portions, and the like) 6 are formed. The tip of the bifurcated end 6 is bent outward to form the locking pieces 5 on both sides. In addition, the band member 1
A tongue-like end portion 7 is formed on the other end side of the. The tongue-shaped end portion 7 is arranged so as to straddle the tightening ear 3, and the locking pieces 5 are formed on both sides by cutting and raising a part of the side edge portion in the middle. When the tightening ear 3 of the tightening member 2 is crushed, the tongue-like end portion 7 enters the forked-like cutout portion 8 of the forked end portion 7 to eliminate the gap between both ends of the band member 1. There is.

Further, when the locking piece 5 of the band member 1 and the cutout portion 4 of the tightening member 2 are locked and temporarily fixed in a ring shape, the position where the locking piece 5 is locked in the cutout portion 4 Positioning is performed so that the position from the band member 1 and the fastening member 2 to the fixing portion (resistance welding portion) 9 is fixed. That is, the band member 1 has a length size (size of outer diameter).
Regardless of this, the bifurcated end 7 is fixed to the end of the fastening member 2 in the immediate vicinity of the bifurcated notch 8. The tongue-shaped end 7 side is fixed at a position corresponding to the end of the tightening member 2.
Since the locking pieces 5 are adapted to be engaged with the notches 4 formed at the equidistant positions on both sides of the tightening ear 3, the fixing portions 9 are also formed at the equidistant positions on both sides of the tightening ear 3. It has become so. Further, when the tightening ears 3 are crushed by the holding force of the fixing portions 9 provided on both ends of the tightening member 2, the band member 1 is reduced in diameter and the tongue-shaped end portion 7 is a bifurcated notch of the bifurcated end portion 6. It enters the part 8 and becomes flush (see FIG. 4).

In FIGS. 5A and 5B, the tightening member 2
Is used as a common component even if the length (outer diameter) of the band member 1 is changed, and the band member 1 is mounted in an arc shape according to the outer shape of the band member 1. A ship bottom type (canoe-shaped) recess 10 is formed in the top surface portion of the tightening ear 3, and when the tightening ear 3 is crushed, the section surface is reinforced so that the top surface does not rise. The tightening ear 3 including the recess 10 is formed by being bent in a gate shape, and the distance between the tightening ear 3 and the notch 4 is equidistant for positioning the fixing portion 9. The position of the notch 4 is the tightening ear 3
May be changed between the positions on both sides. By adopting the symmetrical shape on both sides of the tightening ear 3 in this manner, it is possible to eliminate the directionality, facilitate the handling, and facilitate the automation of the assembly.

In FIGS. 6A and 6B, the band member 1
The length (outer diameter) differs depending on the size of the object to be tightened. The shapes of the bifurcated end 6 and the tongue-shaped end 7 are not limited to these as long as the shapes of the tongue and the bifurcated notch 8 complement each other. Further, since the bifurcated end portion 6 has the bifurcated distal end formed with the locking piece 5, the locking member 5 is locked to the band member main body side as in the conventional case (see FIGS. 12A and 12B). Since no piece is provided, the length L can be shortened. Accordingly, the length of the tightening member 2 can be shortened by L. Therefore, the bifurcated end 6
Since the fixing portion 9 can be formed in the immediate vicinity of the bifurcated notch portion 8 of
The length of the band member 1 and the tightening member 2 can be shortened to reduce the diameter. For example, the outer diameter of the shaft is 16 mm
As a tightening band for tightening a boot mounted on a shaft having a diameter reduced to about φ18 mm, a tightening band having an outer diameter of the band (before tightening) reduced to about φ20 mm to φ22 mm can be provided. Further, the position of the locking piece 5 of the tongue-shaped end portion 7 is bent and formed corresponding to the position of the cutout portion 4 of the tightening member 2.

When assembling the tightening band, see FIG.
In the above, the band member 1 and the tightening member 2 having the tightening ear 3 formed in a circular arc shape in advance are formed into a ring shape by engaging the engaging piece 5 and the notch portion 4, and the ring shape is maintained. It is fixed to the band member 1 at both end positions of the tightening member 2 (positions equidistant from the tightening ears 3).

According to the above construction, the tip of the bifurcated end portion 6 of the band member 1 and the middle portion of the tongue-shaped end portion 7 are bent outward to form the locking pieces 5, respectively. The fixing portion 9 of the bifurcated end 6 on the side of the bifurcated end 6 can be formed in the immediate vicinity of the bifurcated notch 8, so that the length of the band member 1 and the fastening member 2 can be shortened to have a small diameter. A tightening band can be provided. Further, the notch 4 is formed at a position equidistant from the tightening ear 3 of the tightening member 2, and the locking piece 5 of the band member 1 is locked by the notch 4 to position the fixing portion 9. Since both ends of the tightening member 2 are fixed to the band member 1, the assembly can be automated. Further, even if the length (outer diameter) of the band member 1 is changed, the tightening member 2 can be used in common, so that the manufacturing cost can be reduced and the productivity can be improved.

Another example of the tightening band is shown in FIG.
This will be described with reference to (a) and (b) and FIGS. 8 (a) and (b). The same components as those in the above-described embodiment are designated by the same reference numerals, and the description will be incorporated. As previously mentioned,
Since the tightening member 2 is a common component regardless of the outer diameter of the band member 1, it is desirable that the tightening member 2 be designed so as to have as little directivity as possible. However, among the engaging portions formed at equal distance positions on both sides of the tightening ear 3, instead of the notch portion 4 corresponding to the engaging piece 5 on the tongue-shaped end portion 7 side, a cut hole 11 is formed in the center portion in the width direction. May be formed (see FIGS. 7A and 7B). Corresponding to this, the locking piece 5 may be cut and raised at the widthwise central portion of the band member 1 on the side of the tongue-shaped end portion 7 of the band member 1 (FIG. 8A ( See b)).

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and the cutout portion 8 and the tongue-like end portion of the bifurcated end portion 6 are not limited thereto. The shape of 7 is arbitrary. Further, the shape of the locking piece 5 provided on the band member 1 and the locking portion (the notch 4 or the cut hole 11) provided on the tightening member 2 is arbitrary, and a single or a plurality of locking portions may be provided depending on the product. It is needless to say that many modifications can be made without departing from the spirit of the invention, such as provision of any.

[0020]

By using the tightening band according to the present invention,
As described above, the one end of the band member and the middle part of the other end are bent outward to form the locking pieces, respectively, and the fixing portion between the one end of the band member and the end of the tightening member. Can be formed near the end on the one end side, so that the length of the band member and the tightening member can be shortened to provide a tightening band having a small diameter. Further, the locking portion is formed at a position equidistant from the tightening ear of the tightening member, and the locking piece of the band member is locked by the locking portion to position the fixing portion so that both ends of the tightening member are in the band. Since it is fixed to the member, the assembly can be automated. Also,
Even if the length (outer diameter) of the band member changes, the tightening member can be made common to the parts, so that the manufacturing cost can be reduced and the productivity can be improved.

[Brief description of drawings]

FIG. 1 is a front view of a tightening band.

FIG. 2 is a perspective view of a tightening band.

FIG. 3 is a perspective view of a tightening member and a band member.

FIG. 4 is an explanatory view of both ends of the hand member.

5A and 5B are a top view and a front view of a tightening member in a component state.

FIG. 6 is a top view and a front view of a band member in a component state.

7A and 7B are a top view and a front view of a component state of a tightening member according to another example.

FIG. 8 is a top view and a front view of a component state of a band member according to another example.

FIG. 9 is an assembled perspective view of a conventional tightening band.

FIG. 10 is a front view of a conventional tightening band.

FIG. 11 is a partial cross-sectional view of a conventional tightening band.

FIG. 12 is a top view and a front view of a conventional band member in a component state.

[Explanation of symbols]

1 band member 2 Tightening member 3 tightening ears 4 notches 5 locking pieces 6 Bifurcated end 7 Tongue end 8 Bifurcated notch 9 Fixed part 10 recess 11 cut holes

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3H017 EA06                 3J022 EA02 EC02 ED03 FA02 FB03                       FB07 FB12 FB17 GA03 GB43                       GB45 GB73

Claims (7)

[Claims] 1. A metal band-shaped band member formed in a ring shape with both ends separated from each other, and attached to the band member straddling both ends of the band member, and bent outward in a gate shape in the middle. A tightening band having a tightening ear, and a metal band-shaped tightening member capable of reducing the diameter of the band member by crushing the tightening ear, wherein a tip part on one end side and a middle part on the other end side of the band member are provided. The locking piece is formed by being bent outward, and the locking portion for locking the locking piece is formed at a position equidistant from the tightening ear of the tightening member, and the locking piece engages with the locking portion. A tightening band, wherein both ends of a tightening member that is stopped and temporarily fixed to the band member are fixed to the band member. 2. The tightening band according to claim 1, wherein the fixing portion between the one end side of the band member and the end part of the tightening member is formed near the one end side end of the band member. . 3. The locking piece of the band member and the locking portion of the tightening member are locked so as to allow the band member to move in the radial contraction direction and disable the movement in the radial expansion direction. 2. The tightening band according to claim 1, wherein the tightening band is temporarily fixed in a ring shape. 4. The engagement between the engagement piece and the engagement portion allows the fixing portion to be positioned when the band member and the fastening member are temporarily fixed in a ring shape. The tightening band according to claim 1, 2 or 3. 5. A forked end portion is formed on one end side of the band member, a tip of the forked end portion is bent outward to form locking pieces on both sides, and the other end side is a tongue piece. Formed on the end portion of the tongue, the tongue-shaped end portion is arranged so as to straddle the tightening ear, and the locking pieces are formed on both sides by cutting and raising a part of the side edge portion in the middle part. Claims 1, 2, 3
Or the tightening band described in 4. 6. The tightening band according to claim 5, wherein the bifurcated end of the band member is fixed to the end of the tightening member in the immediate vicinity of the bifurcated notch. 7. When the tightening ears of the tightening member are crushed, the band member is reduced in diameter so that the tongue-shaped end portion enters the bifurcated notch portion of the bifurcated end portion and becomes flush. The tightening band according to claim 5 or 6.