JPS6021529Y2 - metal binding band - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a metal coupling band suitable for tightening hoses, tightening boots of universal joints, etc.

The present applicant has proposed a band disclosed in Japanese Patent Publication No. 14702-1-1983 as a metal coupling band for simplifying the tightening work.

By the way, this metal bonding band consists of a metal band-shaped member whose both ends are joined palm-to-palm in advance to form a ring shape;
It consists of a lever fixed to the side surface of the palm part, and a stopper fixed to a part of the band-shaped member to fix the lever in the tightened state.

Therefore, when using this bonding pad as a boot band for a universal joint in an automobile, attach the ring-shaped bonding band to the shaft etc. before assembling the universal joint, and then transport the coupling band to the desired position after assembling the universal joint. I needed to do it.

Therefore, if the band breaks during use, it is impossible to replace it with a new coupling band without disassembling the universal joint.

The present invention is an improvement on the above-mentioned drawbacks of the conventional coupling band, and the structure of the present invention will be described below with reference to embodiments shown in the drawings.

In FIG. 1, 10 is a wrap-around metal coupling band according to the present invention, 11 is a metal band member, for example, a steel band, 12 is a lever made of a plate steel that is thicker than the band member 11, and 13 In order to maintain the tightened state of the band member 11,
A stopper 14 for fixing the lever 12 along the band-like member fits and locks the base end of the lever in order to form the band-like member into a ring shape, and is formed on the inner surface of the boot in the tightened state. It is a holding part to fill the space.

In the winding type coupling band having the above structure, a part of the slightly curved lever 12, that is, a part away from the base end 12a, is attached to one end of the stretched band member 11 by spot welding, rivets, or other suitable methods. At the same time, an engaging portion 14 for fitting the proximal end portion 12a of the lever 12 is provided at the other end of the strip member 11, and further, at a position distant from the engaging portion 14 of the strip member 11, It is manufactured by fitting a stopper 13 made of sheet metal and having a U-shape as a whole, protruding both side ear plates 13a, and fixing them by an appropriate method such as spot welding.

Figures 2 to 9 are drawings showing examples of the engaging part and the base end of the lever. In particular, the engaging part has a structure that prevents the creation of a space on the inner surface of the boot when tightening. .

The engaging part 14 shown in FIG. 2 is a part of the band-like member 11, and has its tip protruded from the notch 11a by drawing to form an inclined part 14a, and the proximal end 12a of the lever 12 is attached to the notch. It has an opening 14b for fitting.

In FIG. 3, one side is deeply drawn and the other end is shallowly drawn to form an inclined part 14a, and flanges 14 are formed on both sides.
A retaining member 14 in the shape of C914C is made separately from a steel plate, and the flange portion 14cv14c of this retaining member is welded to the other end of the band-shaped member 11.

FIG. 4 shows the shape of the base end 12a of the lever 12, with the base end protruding so as to fit into the opening 14b of the retaining member shown in FIGS. 2 and 3 above. be.

In FIG. 5, the retaining member 14 of FIG. 3 is attached to the other end of the strip member.
Flange part 14C? Slope part 1 with 14C facing upward.
4a is welded to a band-shaped member, and a flange portion that slopes toward the tip prevents the creation of a space.

FIG. 6 shows that the front part of the retaining member shown in FIG. 2 is formed into a U-shape by separately bending a steel plate, and a notch 14d is formed on the bent side for fitting the engaging part. The structure is such that a strong hook member 14e is made, and this hook member 14e is welded to a band-shaped member in combination with a drawing process.

Figure 7 shows a hook member 1 having the same width as the engaging member formed by drawing.
4f is separately bent with a copper plate, and this is welded onto the band-shaped member and to the front part of the engaging member formed by the aperture.

FIG. 8 shows the shape of the base end of the lever that is compatible with the retaining member shown in FIGS. It has been established.

FIG. 9 shows an embodiment in which the metal coupling band according to the present invention has the function of tightening and adjusting the inner diameter. In addition, the lever 22 is provided with the same number of windows 25 as the engaging portions at the same pitch as the engaging portions 24 and into which the retaining portions 24 can fit.

In the drawing, the proximal end 22 of the lever 22 is attached to the most distal engaging portion 24a.
a is shown in a locked state, and the second and third engaging portions 24
b and 24c are shown fitted into the windows 25a and 25b of the lever 22, respectively.

In other words, the lever 22 is locked by the most distal engaging portion 24a, and a space is prevented from being created on the inner surface of the boot.

Note that 23 is a stopper for the lever 22.

In the case of the second embodiment of the present invention, the engaging portion that engages with the base end of the lever is appropriately selected.

This makes it possible to change the inner diameter for significant tightening.

As explained above, the present invention includes an expanded metal band member, a lever fixed to one end of the band member, an engaging portion provided at the other end of the band member, and a lever fixed to a part of the band member. It consists of a stopper for fixing the lever in the tightened state, and by wrapping the band member around the object to be tightened and locking the tip of the lever in the retaining part, the metal band-shaped member is secured by the leverage of the lever. The member is tightened, and the engaging part provided at the other end of the band-shaped member is provided with an inclined part that slopes toward the end to eliminate the space that occurs when tightening the object to be tightened, and to maintain a close contact with the metal band-shaped member. Since the lever is held by the lever stopper, there is almost no step on the inner surface of the strip member when it is tightened, and the presence of the inclined part of the engagement part makes the vicinity of the base end of the lever strong. In the case of an object to be tightened, especially a rubber boot, the part in question is strongly pressed, so that no space is created in this part.

Therefore, a uniform tightening force acts on the entire circumference of the object to be tightened, improving sealing performance.

Furthermore, in the present invention, if the retaining portion is formed at the end of the band-like member by press working, the metal connecting band can be manufactured easily.

Furthermore, in the case where a plurality of windows and engaging portions are provided on the lever and the strip member, the tightening inner diameter can be adjusted and significantly changed.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a metal coupling band according to the present invention, in which FIG. 1A shows the state before use, and FIG. FIGS. 2, 3, and 5 to 7 show various embodiments of the engaging portion, and FIGS. 4 and 8 show the shape of the base end of the lever. FIG. 9 is a modified example of the present invention, and the drawing is a perspective view showing the relationship between the end of the strip member and the lever in the tightened state. 11.21... Band-shaped member, 12.22...
・・Lever, 13, 23・・・・ Stopper, 14, 2
4... Engaging portion, 12a, 22a... Lever base end.

Claims (1)

[Scope of utility model registration request] The unfolded metal band member, the lever fixed to one end of the band member, the retaining part provided at the other end of the band member, and the lever in a tightened state fixed to a part of the band member are fixed. Wrap the band-shaped member around the object to be tightened, lock the tip of the lever to the engagement part, tighten the metal band-shaped member by the lever action of the lever, and tighten the metal band-shaped member around the other end of the band-shaped member. A sloping part is provided on the engaging part provided at the end so as to eliminate the space created when tightening the object to be tightened, and the lever that is in close contact with the metal strip member is held by the stopper. A metal binding band that is characterized by the following features: