JPH10299963A - Double spiral type metal clamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double spiral type metal clamp which can be contacted closely evenly and elastically in a high roundness, even to a fixed article with no elasticity, and has a flat form as a whole. SOLUTION: At the position where the inner superposed part 11a and the outer superposed part 11b of a clamp band 11 are overlapped threefold as a specific amount X through an intermediate superposed part 11c, it is set to bite and lock the first fixing pawl 18 directing to the inside from the outer superposed part 11b, and the second fixing pawl 22 directing to the outside from the intermediate superposed part 11c each other, while at the position overlapping doubly except for the specific amount X, the clamp band 11 itself is made to exercise the extension and contraction spring force in the diameter direction, by plural floating leg pieces 23 interposed between the circumscribed band area X1 and the inscribed band area X2 of the clamp band 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid feeding hose made of a plastic such as rubber or synthetic resin, a dust-proof bellows, a boot for a shaft coupling, and other fixed objects, which are connected to the circumference of connection of various devices. The present invention relates to a double spiral clamp for semi-permanently fixing to a surface.

[0002]

2. Description of the Related Art The present inventor has previously proposed Japanese Utility Model Publication No. 7-50631 as this type of double spiral clamp.

[0003] According to this, a clamp band (11) made of a metal strip material having a fixed length is connected to an inner overlapped portion (11a) at the one end side of the bend and an outer overlapped portion at the other end side of the bend. (11b) is bent and solidified into an overall double circular spiral state that overlaps three times by a certain amount (L) via the intermediate polymerization portion, and the partial constant amount (L) When compared with a clamp that is wound into a circular ring shape that overlaps only twice and remains three-dimensional, the clamp band (1) is pulled under a small drawing force (tightening torque) of about half.
The diameter (D) of 1) can be contracted and deformed lightly,
In addition, it can be said that there is an advantage that it can be uniformly adhered to the circumferential surface of the fixed object (10) under the highest possible roundness.

[0004]

However, as a result of intensive studies, the elastic bump (23) for accumulating the expansion and contraction spring force in the clamp band (11) itself has been used in the configuration of the above-mentioned invention. Since the outer overlapping portion (11b) of the band (11) is bent and bent outwardly, the band (11) is apt to be broken due to stress concentrated thereon, and may interfere with peripheral members. Since the weight distribution along the circumferential direction of the clamp band (11) is also offset, particularly when used in a device such as a vehicle that receives rotational force, vibration, or impact, the offset of the tightening force, displacement, or dropout may occur. Not without.

[0005] That said, the elastic bump (23)
If the installation of the clamp is omitted, the clamp band (11) itself does not exhibit the expansion and contraction spring force, so that the fixed object (10) may be a product made of a highly elastic rubber material,
In the case of a molded article made of a hard synthetic resin material having no inherent elasticity, the object to be fixed (10) is fully adhered to the connection circumferential surface (24) of various devices, and is stable and stable. It cannot be firmly tightened, and when it is used in a device such as a vehicle that is subjected to rotational force, vibration, or impact, there is a concern that the position may shift or fall off.

As a countermeasure, it is necessary to manufacture the diameter (D) of the clamp band (11) to a high-precision dimension that exactly matches the thickness of the fixed object (10). It is necessary to prepare a large number of varieties corresponding to changes in thickness, and the mass production effect cannot be exhibited.

In the configuration of the above-mentioned known invention, the second receiving port (15) of the operating tool (B) and the second convex channel wall (16) for receiving the operating tool that protrudes outward from the opening edge thereof are provided. The metal strip material (M) forming the outer overlapped portion (11b) of the clamp band (11) is provided at the cut end of the metal strip material (M), and at a position more deviated in the direction in which the elastic bump (23) exists than the cut end Since the first locking claw (18) and the second locking claw (21) are engaged with each other by biting, the above-mentioned clamp band (11) is used during the use of the clamp band (11). There is a possibility that the metal strip material (M) may be outwardly warped from the cut-off end of the metal strip material (M).
(21) is more susceptible to dissociation force.

[0008]

SUMMARY OF THE INVENTION The present invention contemplates a further improvement of the above-described object. For this purpose, a clamp band composed of a metal strip material cut to a fixed length is rolled and bent. The overall overlap, in which the inner overlapped portion on one end side and the outer overlapped portion on the other end side are overlapped by a certain amount and tripled through the intermediate overlapped portion.
For a fluid feeding hose, dust-proof bellows, and shaft coupling made of plastics such as rubber and synthetic resin by winding and bending into a heavy circular spiral state and forcibly deforming the diameter of the clamp band by force. In a double spiral type clamp fitting used to fix boots and other objects to be fixed to the connection circumferential surface of various devices,

First, only one cut-off end of the inner overlapping portion is cut out as a pilot nose having a fixed width smaller than the fixed width of the metal strip material itself, and a first tool receiving hole is also opened in the inner overlapping portion. Forming the first
The first tool engaging claw is bent outward from the opening edge of the tool receiving hole on the side adjacent to the pilot nose,

In the outer overlapping portion, a first fixed claw receiving hole and a second tool receiving hole are sequentially distributed in parallel from the other end side of the cutout, and the other end of the first fixed claw receiving hole is separated. The first fixing claw is bent in an inwardly depressed state from the side opening edge, and the second tool locking claw is raised outward from the opening edge of the second tool receiving hole adjacent to the first fixing claw receiving hole. Bend to a state,

The intermediate overlapping portion has a nose receiving hole for allowing the pilot nose of the inner overlapping portion to escape, and a communication hole for allowing the second tool engaging claw of the inner overlapping portion to escape, and the openings are distributed in parallel. The second fixing claw is bent outward from the opening edge on the side of the communication hole adjacent to the nose receiving hole so as to protrude outward.

The working claw of the drawing-type operating tool is engaged with both the first tool engaging claw of the inner overlapping portion and the second tool engaging claw of the outer overlapping portion, and the pair of operating claws is provided. When the diameter of the clamp band is forcibly contracted and deformed by performing a drawing operation on the
The fixed claw and the second fixed claw of the intermediate polymerization portion are set so as to bite and lock with each other, and

[0013] From the circumscribed zone from the tool escape communication hole of the intermediate overlap portion to the second tool receiving hole of the outer overlap portion, a plurality of floating leg pieces distributed in a dotted manner are bent inward. Cutting and raising each of the floating leg pieces from the nose receiving hole of the intermediate overlapping portion, which double overlaps with the circumscribed zone, to the inscribed zone from the nose receiving hole of the intermediate overlapping portion to the first tool receiving hole of the inner overlapping portion. By elastically contacting the distal end, a diametrical expansion and contraction spring force is accumulated in the clamp band itself,

Secondly, similarly, only one of the cut ends of the inner overlapped portion is cut out as a pilot nose having a fixed width smaller than the fixed width of the metal strip material itself, and a first tool receiving hole is similarly formed in the inner overlapped portion. An opening is formed, and the first tool locking claw is bent outwardly from an opening edge of the first tool receiving hole adjacent to the pilot nose,

In the outer overlapping portion, a first fixed claw receiving hole and a second tool receiving hole are sequentially distributed in an open state in parallel from the other end of the cut, and the other end of the cut at the first fixed claw receiving hole. The first fixing claw is bent in an inwardly depressed state from the side opening edge, and the second tool locking claw is raised outward from the opening edge of the second tool receiving hole adjacent to the first fixing claw receiving hole. Bend to a state,

The intermediate overlapping portion has a nose receiving hole of the inner overlapping portion for allowing the pilot nose to escape, and a communication hole for allowing the second tool engaging claw of the inner overlapping portion to escape as well. The second fixing claw is bent outward from the opening edge on the side of the communication hole adjacent to the nose receiving hole so as to protrude outward.

The working claws of the drawing-type operating tool are respectively engaged with both the first tool engaging claw of the inner overlapping portion and the second tool engaging claw of the outer overlapping portion, and the pair of operating claws is provided. When the diameter of the clamp band is forcibly contracted and deformed by performing a drawing operation on the
The fixed claw and the second fixed claw of the intermediate polymerization portion are set so as to bite and lock with each other, and

From the inscribed zone from the nose receiving hole of the intermediate overlapping portion to the first tool receiving hole of the inner overlapping portion, a plurality of floating leg pieces distributed in a dotted manner are cut and raised in an outwardly bent state. Then, each of the floating leg pieces is cut into a circumscribed zone from the tool escape communication hole of the intermediate overlap portion, which double overlaps with the inscribed zone, to the second tool receiving hole of the outer overlap portion. It is characterized in that diametrical expansion and contraction spring force is accumulated in the clamp band itself by elastically contacting the raised tip.

[0019]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a clamp according to a first embodiment of the present invention; FIG. FIGS. 3 to 9 also show a product which is wound and bent three-dimensionally and its use state. As a material of the clamp, a fixed thickness (T) (for example, about 0.5 to 1.0 mm) and a fixed width (W) are used. ) (Eg, about 7-10 mm) (eg, SUS301, 304, 316 or 430)
And other metal strips (M) are used, and from the previously long objects, the fixed objects (10) such as the fluid supply hoses, dust-proof bellows, and boots for shaft couplings, which are the target, are provided. The fixed length (L) according to the length is cut into an appropriate fixed size.

(11) The above-mentioned metal strip material (M) cut into a fixed size is double-wound and bent to form a circular ring shape in a front view, thereby forming an object ( A clamp band which directly serves the tightening action of 10), and is partially overlapped by a certain amount (X) so that the other end of the winding band is indirectly circumscribed with one end of the winding bending. It is kept in condition.

That is, in the clamp band (11), one end of the winding and bending is used as an inner overlapping portion (11a), and the other end of the bending and bending is used as an outer overlapping portion (11b). However, it is bent and three-dimensionally wound into an overall double circular spiral state that overlaps only three times.

(11c) is the above-mentioned inner polymerized portion (11a) at the triple overlap portion of a certain amount (X).
The intermediate polymerized portion (11c) interposed between the outermost portion and the outer polymerized portion (11b) is shown. The intermediate polymerized portion (11c) is formed from the above-mentioned fixed overlap (X) triple overlap portion by the clamp band (11). By continuously moving to one end of the winding and bending, 2 inscribed in the outer superposed portion (11b)
A double overlap state occurs, and the transition from the triple overlap portion to the opposite winding and bending other end side of the clamp band (11) continues, so that the above-mentioned inner overlap portion (1) is formed.
A double overlap state circumscribing 1a) results.

Needless to say, the clamp band (11) has a fixed width (W) of the metal band material (M) itself, but only one end of the inner overlapped portion (11a) is cut off. Due to the notches in both side edges in M), the metal strip material (M) is formed as a pilot nose (12) having a narrow constant width (W1) which is less than about one third of the constant width (W). I have. The overhang length (L1) of the nose (12) is, for example, about 7 to 10 m.
m.

(13) The pilot nose (12)
And a locking pin receiving hole for winding and bending forming which is opened as a substantially circular or elliptical shape in plan view on the inner overlapping portion (11a) of the clamp band (11) while being located near the overhanging base end of the clamp band (11). Receiving a locking pin to be planted from a circumferential surface of a core metal roll for winding and bending in a forming machine (not shown), and rotating the core metal roll in a locking state with the locking pin. This is used for winding and bending the clamp band (11) into a circular spiral state.

(14) is the same as that of the inner polymerized portion (11).
a) from one end of the cut-off pin receiving hole (1)
3) A first tool receiving hole which is opened at a position further distant than that of the first embodiment. The first tool receiving hole has a substantially quadrangular or elliptical shape in a plan view, and is located at a position where the pilot nose (12) is located. The first tool engaging pawl (15) is bent outwardly by a height substantially corresponding to the constant thickness (T) of the metal strip material (M) itself. The first tool engaging claw (15) protruding outward acts as a reinforcing bead capable of resisting a drawing force (a contraction force of a clamp band) of a drawing-type operating tool described later. is there.

On the other hand, the outer overlapping portion (11b) of the clamp band (11), which is to be circumscribed in a triple overlapping state with the inner overlapping portion (11a), is first fixed in sequence from the other end of the separation. The pawl receiving holes (16) and the second tool receiving holes (17) are openly distributed in parallel.

Although both of them have a substantially square or elliptical shape in plan view, the first fixing claw (18) is provided in the opening edge of the first fixing claw receiving hole (16) at the other end of the separation. ) Is bent in an inwardly depressed state by a depth substantially corresponding to the constant thickness (T) of the metal strip material (M) itself. The opening width of the first and second tool receiving holes (14) and (17) and the first fixing claw receiving hole (16) is about one third of the fixed width (W) of the metal strip material (M). Strongly dimensioned.

Also, from the opening edge of the second tool receiving hole (17) on the side adjacent to the first fixed claw receiving hole (16), the second tool locking claw (19) is also made of a metal strip material ( M) It is bent outwardly by a height substantially corresponding to its own constant thickness (T), which also has the same effect as the first tool engaging claw (15) of the inner overlapped portion (11a). Functions as a reinforcing bead.

Further, (20) shows the clamp band (1).
In (1), an intermediate polymerized portion (11c) existing at a place where the inner polymerized portion (11a) and the outer polymerized portion (11b) overlap three times by a certain amount (X) is applied to the metal strip material (M). A nose receiving hole which is elongated and formed in the longitudinal direction, wherein the inner overlapping portion (11)
By aspirating the pilot nose (12) of (a), the inner peripheral surface (tightening action surface) of the clamp band (11) is maintained in a stepless state. (L2) indicates the opening length of the nose receiving hole (20), which is dimensioned much longer than the overhang length (L1) of the pilot nose (12). Similarly, it goes without saying that the opening width of the nose receiving hole (20) is slightly larger than the aforementioned constant width (W1) of the pilot nose (12).

(21) The nose receiving hole (20)
In the side-by-side state, are communication holes for tool retraction that are also elongated and open to the intermediate overlapping portion (11c), and the first tool receiving holes (14) of the inner overlapping portion (11a).
And the first tool engaging claw (15) is received in the communication hole (21).

Therefore, at the time of the drawing operation of the clamp band (11) by the operation tool described later, the intermediate overlapping portion (11c) and the inner overlapping portion (11a) inscribed in a double overlapping state with the intermediate overlapping portion (11c) are formed. There is no danger of a relative lateral displacement (axial direction). The opening width of the communication hole (21) for inserting a tool is substantially the same as that of the first and second tool receiving holes (14) and (17), the first fixed claw receiving hole (16), and the nose receiving hole (20). The dimensions are the same.

The first fixing claw (18) of the outer overlapped portion (11b) is engaged with the biting member from an opening edge on the side adjacent to the nose receiving hole (20) in the communication hole (21) for tool escape. The second fixing claw (22) that can be stopped is
The metal strip material (M) is bent outward by a height substantially corresponding to the constant thickness (T) of the metal strip material (M) itself.

That is, a second fixing claw (22) bent outwardly from the intermediate polymerization portion (11c),
The first fixed claw (18) bent inwardly and depressed from the outer overlapped portion (11b) circumscribing the outer overlapped portion (11b) has a direction opposite to that of the toes, and the outer overlapped portion (11).
On the overlapping plane where the b) and the intermediate overlapping portion (11c) overlap, the bites are engaged with each other and locked.

At this time, the pilot nose (1) of the inner polymerized portion (11a) inscribed in the intermediate polymerized portion (11c).
2) is not only allowed to escape into the nose receiving hole (20) of the intermediate overlapping portion (11c), but also the first tool engaging claw which is also bent outward from the inner overlapping portion (11a). (15) is also an intermediate polymerized part (11c)
Is received in the communication hole (21) of
In spite of being a heavy spiral clamp, the clamp band (11) can be significantly flattened as a whole, and the inner peripheral surface (clamping operation surface) can be maintained in a highly-circular ring state.

The intermediate overlapping portion (11c) of the clamp band (11) transitions from the triple overlap portion of a fixed amount (X) to both one end of the winding bend and the other end of the winding bend, so that the inner side is continuously formed. As described above, the overlapping portion is maintained in a double overlap state with the polymerized portion (11a) and the outer polymerized portion (11b), but the intermediate polymerized portion (11c) corresponding to the double overlapping portion is maintained. A circumscribed zone (X1) extending from the tool escape communication hole (21) to reach the second tool receiving hole (17) of the outer overlapping portion (11b) includes the circumscribed zone (X).
The plurality of floating leg pieces (2
3) is desirably cut inwardly to a depth substantially corresponding to a constant thickness (T) of the metal strip material (M) itself.

The floating leg pieces (23) have the circumscribed zone (X1) cut and raised, and the intermediate overlapping portion (11) inscribed therein in a double overlapping state.
c) through the nose receiving hole (20) to the inner polymerized portion (1).
In order to maintain the inscribed zone (X2) until reaching the first tool receiving hole (14) of 1a) and a constant gap (S), the clamp band (11) is floated from the inscribed zone (X2). This is for accumulating the expansion and contraction spring force along the diameter direction.

In this regard, in the first embodiment shown in FIGS. 1 to 9, a substantially U-shaped cut line (24) in a plan view is scattered at a constant pitch on the longitudinal center line of the metal strip material (M). In this state, the leg piece (23) is lifted inward from the cut line (24) and bent inward, and its tip is moved to the inscribed zone (X2) which overlaps with the above-mentioned circumscribed zone (X1). , Elastic contact.

That is, when the fixed object (10) is a molded article made of a rigid synthetic resin material having no inherent elasticity, for example, a dustproof bellows or a boot for a shaft coupling, it is tightened. By means of the floating legs (23) of the clamping band (11) acting on it, the clamping band (1) is provided.
1) The self-expanding spring force is exerted by itself, and the restoring repulsion force of the elongation deformation along the diametrical direction is used as a firm tightening force by which the clamp band (11) can be completely adhered to the fixed object (10). The purpose is to use it.

More specifically, at a double overlap portion of the clamp band (11) other than a portion where the clamp band (11) overlaps three times by the predetermined amount (X), the clamp band (11) is bent inward from the circumscribed band (X1). The plurality of floating leg pieces (23) distributed as an elastic spring element of the clamp band (11) itself can be used to automatically change the hardness and thickness of the fixed object (10). In this way, it is possible to absorb or finely adjust the surface of the object to be fixed to the object (10).

Such a clamp of the present invention can be mass-produced from the above stainless steel or other metal strip material (M) as follows.

That is, in the process of automatically and intermittently transferring the metal strip material (M), which is a long object, in one direction along a transfer line, first, a press punching die (not shown). Thus, the pilot nose (12), the locking pin receiving hole (13), the first and second tool receiving holes (14) (17), the first fixing claw receiving hole (16), the nose receiving of the clamp band (11) The hole (20) and the communication hole (21) for operating tool escape are punched. The processing state is as shown in FIGS.

After that, the metal strip material (M) is passed through a processing die which is press-bent and raised (not shown), and the first and second tool locking claws (15) (19) of the clamp band (11), The bending and raising of the first and second fixing claws (18) and (22) and the cutting and raising of the floating leg piece (23) are performed at once. The processing state is as shown in FIGS. 13 and 14. In this case, the first and second tool locking claws (15) and (19) and the second fixing claw (22) are bent outwardly. It goes without saying that the first fixing claws (18) and the floating leg pieces (23) are bent inward in opposite directions.

Subsequently, the above-mentioned metal strip material (M) was used as shown in FIG.
By cutting so as to separate from the positions indicated by the reference numerals (C-C) of (14) to (14), the dimensions are set to the required constant length (L) as the clamp band (11), and finally the fixed length which is still in the developed flat plate state (L) clamp band (1
1) is fed from the transfer line to a forming machine (not shown), and the inner superposed portion (11a) and the outer superposed portion (11b) are fixed through the intermediate superposed portion (11c) by the forming machine. The product is wound and bent into a three-dimensionally overlapped overall circular spiral state by the amount (X), thereby completing a product as shown in FIGS.

In this case, as suggested from FIG. 10, a first tool receiving hole (14) opening in the inner overlapping portion (11a) of the clamp band (11) and a first tool receiving hole (14) also opening in the outer overlapping portion (11b). (2) The distance (D) between the tool receiving hole (17) and the tool receiving hole (17) is changed according to the length of the metal strip material (M) by controlling the transfer speed or the like, and the distance is adjusted according to the thickness of the target object (10). A wide variety of clamp fittings,
It can be manufactured very easily. When manufacturing various types of clamps whose diameters vary, it is not necessary to modify even the above-mentioned press-working dies, and the compatibility and the mass productivity are remarkably excellent.

Next, FIG. 15 to FIG.
7 shows a second to a seventh embodiment of the present invention corresponding to the embodiment, that is, at a double overlap portion of the clamp band (11) except for a triple overlap portion by the fixed amount (X), A plurality of floating leg pieces (23) interposed between the circumscribed zone (X1) and the inscribed zone (X2) serve as telescopic spring elements of the clamp band (11) itself, and the fixed object (10). If the clamp band (11) can exert a tightening force by which the clamp band (11) completely and elastically absorbs or finely adjusts the change in hardness or thickness of the object, and the fixed object (10) adheres to the whole. It is also possible to adopt various configurations of 15 to 28.

That is, for example, FIG. 1 corresponding to FIGS.
As is apparent from the second and fifth embodiments, the L-shaped cut lines (24) facing each other in both sides of the metal strip material (M) in plan view are scattered and distributed at pitches at regular intervals. And a pair of cut lines (2
4) The leg piece (23) may be bent inward and raised.

As shown in the third embodiment of FIG.
Similarly, L-shaped cut lines (24) in plan view are applied to both side edges of the metal strip material (M) in an alternating staggered arrangement at pitches at regular intervals, and the cut lines (24)
Even if the leg piece (23) is lifted inward and bent inward, it can be done.

The lid is closed and the second and third parts of FIGS.
Although the embodiment is adopted, the clamp band (11) is engaged with the first fixing claw (18) of the outer overlapping portion (11b) and the second fixing claw (22) of the intermediate overlapping portion (11c). The pilot nose (12), which is fixed to the state and forms one end of the inner overlapped portion (11a), can slide freely in the circumferential direction of the clamp band (11). This is because, similarly to the configuration, the inner peripheral surface (clamping operation surface) of the clamp band (11) can exert a diametrical expansion / contraction spring force.

In particular, according to the configurations of the second and third embodiments, all of the floating leg pieces (23) are scattered at positions eccentric to both side edges of the metal strip material (M). Therefore, one or a plurality of extremely elongated holes (2) extending along the longitudinal center line of the remaining metal strip material (M).
5) can be formed so as not to interfere with the floating leg piece (23), and the hole (25) can be used to reduce the weight of the clamp band (11) itself.

According to the configuration of the second and third embodiments also shown in FIGS. 15 to 17, the plurality of floating legs (23) are eccentric to both side edges of the metal strip material (M). 18 to 20, the fourth distribution shown in FIGS.
As is evident from the embodiment, one or a plurality of lateral displacement preventing pieces (26) located on the longitudinal center line of the remaining metal strip material (M) are connected to the inscribed zone (X2) of the clamp band (11). ), It is possible to cut and raise it outwardly and to interpose between the floating leg pieces (23) scattered and distributed on both side edges.

In this case, when the clamp band (11) is temporarily fixed to the fixed object (10), which will be described later, or when the clamp band (11) is drawn down by a subsequent operation tool,
The inscribed band (X2) forming the double overlapping state
And the circumscribed band (X1) are relatively lateral (axial)
The risk of shifting the position to the
According to 6), it is possible to prevent the problem by itself.

The lateral displacement preventing piece (26) of the fourth embodiment is replaced with a hole (25) for reducing the weight of the clamp band (11), or the hole (2).
Needless to say, in addition to 5), it can be provided on the longitudinal center line of the metal strip material (M).

As long as the above-mentioned lateral displacement preventing piece (26) is interposed between facing floating leg pieces (23) scattered and distributed on both side edges of the clamp band (11), the cut-and-raised tip portion is clamped on the clamp band (11). 11) circumscribed band (X
Although it is not necessary to make contact with the circumscribed zone (X1), it is not necessary to make contact with the circumscribed zone (X1) by cutting and raising the front end portion into a flat seat (27) and continuously bending it into a substantially rectangular shape in a front view. It is preferable that the lateral displacement preventing piece (26) also has a function as the floating leg piece (23). (28) is a substantially U-shaped cut line in a plan view provided to the metal strip material (M) to bend and raise the lateral displacement prevention piece (26).

FIGS. 21 to 24 show a fifth embodiment of the present invention, in which a plurality of floating leg pieces (23) are provided.
As in the first embodiment shown in FIGS. 1 to 9, the metal strip material (M) is inwardly distributed from the circumscribed zone (X1) as a dotted distribution at pitches at regular intervals along the longitudinal center line of the metal strip material (M). While cutting and raising the state, each of the cutting and raising ends is a flat seat (29) and is continuously bent substantially in a letter shape when viewed from the front.

Then, an extremely elongated leg piece receiving hole (3) into which a plurality of such floating leg pieces (23) escape is provided.
One or more of (0) is formed along the longitudinal center line of the metal strip material (M) into an inscribed zone (X2) that overlaps the above-mentioned circumscribed zone (X1) doubly. Thereby, each of the floating leg pieces (23) is seated (2) on the fixed object (10) through the leg piece receiving hole (30).
9) can be elastically contacted to accumulate diametrical expansion and contraction spring force in the clamp band (11) itself.

According to the configuration of the fifth embodiment,
A plurality of floating leg pieces (23) cut and raised inwardly from the circumscribed zone (X1) of the clamp band (11) overlap the circumscribed zone (X1) doubly. X2) can be inserted into the leg piece receiving hole (30), so that when the clamp band (11) is drawn down by the operating tool described later, the inscribed band (X2) in the double overlapping state is formed. ) And the circumscribing zone (X1) do not relatively shift in the lateral direction (axial direction), and the leg piece receiving hole (3
By forming the opening 0), the clamp band (11) of the double spiral clamp can be reduced in weight rationally.

Further, since the cut-and-raised tip of the floating leg piece (23) is bent as a flat seat (29), there is no possibility of damaging the fixed object (10). A plurality of seats (29) distributed are passed through the leg piece receiving holes (30), and the fixed object (10) is
Since the clamp band (11) resiliently adheres to the fixed object (10), the clamp band (11) can be prevented from inadvertently idling with respect to the object (10), and can be stably and firmly used.

In the first to fifth embodiments of the present invention, a plurality of floating leg pieces (23) for exerting an elastic spring force on the clamp band (11) are overlapped with the clamp band (11) in double. FIG. 2 corresponds to FIGS. 3 and 4 although it is cut and raised in an inward bent state from the circumscribed band (X1).
Conversely, as shown in the sixth embodiment of FIGS. 5 and 26 and the seventh embodiment of FIGS. 27 and 28 corresponding to FIGS. 20 and 21, outward bending from the inscribed band (X2) of the clamp band (11). It may be cut and raised, and the cut and raised end of each floating leg piece (23) may be brought into elastic contact with the circumscribed zone (X1).

Although the sixth and seventh embodiments are employed, the pilot nose (12), which also forms one end of the clamped band (11) and separates the inner overlapping portion (11a), is free in the circumferential direction. The floating leg piece (23) cut and raised in an outwardly bent state from the inscribed zone (X2) is in a state in which the clamp band (1) can slide freely.
1) Acting as its own expansion / contraction spring element, the fixed object (10)
This is because it can exert a tightening force that adheres to the entire surface.

In the case of adopting the sixth embodiment, though not shown, according to the second and third embodiments of FIGS. 15 to 17, a hole which does not interfere with the floating leg (23). One or more of (25) is used as the inscribed band (X2)
An opening is formed on the longitudinal center line of the circumscribed zone (X1) which double overlaps with the above, or according to the fifth embodiment of FIGS. 21 to 24, a receiving hole (30) of the floating leg piece (23). Can also be correspondingly distributed on the longitudinal center line of the circumscribed zone (X1).

Further, when the seventh embodiment is adopted,
As is clear from FIGS. 27 and 28, one or a plurality of lateral displacement preventing pieces (26) located on the longitudinal center line of the metal strip material (M) according to the fourth embodiment of FIGS. )
From the circumscribed zone (X1) of the clamp band (11) in an inwardly bent state, or one or more of the punched holes (25) are also placed on the longitudinal center line of the circumscribed zone (X1). An opening can be formed.

Since the other configurations in the second to seventh embodiments are substantially the same as those in the first embodiment, only the corresponding reference numerals to those in FIGS. , And a detailed description thereof will be omitted.

In any case, the clamp of the present invention has two
As a double spiral type, the inner overlapping portion (11a) and the outer overlapping portion (11b) of the clamp band (11) are wound twice in an overall position to maintain a triple overlap state by a certain amount (X) at an intermediate position. Since it is a bent three-dimensional product, it can be used for fluid supply hoses, dustproof bellows,
In fixing the boot for a shaft coupling and other objects to be fixed (10) to the connection circumferential surface (32) of various devices (31) corresponding thereto, the above-mentioned clamp band (11) is used in FIG. , And temporarily fixed in a state of being inserted into the fixed object (10).

At the time of the temporary fixing, the clamp band (1
1) inner polymerized portion (11a) and outer polymerized portion (11a)
b) are overlapped with each other in a relaxed state, and the first tool receiving hole (14) of the inner overlapping portion (11a) has a communication hole (21) for operating tool escape of the intermediate overlapping portion (11c) circumscribed therewith. And the outer polymerized portion (11
It is parallel to the second tool receiving hole (17) of b). In addition, the first and second tool engaging claws (15) and (19) bent outward from the opening edges of the first and second tool receiving holes (14) and (17) are directed in opposite directions. Kept in state.

In view of this, a pair of operating claws (33) provided at the tip of the drawing-type operating tool (P) as shown in FIG.
From the outside to the first and second tool locking claws (15) and (19) of the clamp band (11), and strongly grip the pair of handles (34) of the operating tool (P). Then, a pair of the above-mentioned working claws (33) is connected to the assembly fulcrum shaft (3).
The drawing operation is performed around 5).

Then, the clamp band (11)
In the process, the pilot nose (12), which is one end of the cut-out portion of the inner superposed portion (11a), has a nose of the intermediate superposed portion (11c) circumscribing it, as suggested from FIG. While escaping into the receiving hole (20), the intermediate polymerized portion (11c)
Fixing claw (22) bent outwardly from the second fixed claw (22)
And the first fixing claws (18) bent inwardly and depressed from the outer overlapped portion (11b) circumscribing the first and second fixing claws (18) are displaced so as to get over each other, and eventually bite and locked. Here, as is clear from FIGS. 6 to 9, the fixed object (10) has a connection circumferential surface (3) of various devices (31).
It is fixed and integrated in the tightened state to 2). afterwards,
It goes without saying that the working claw (33) of the operating tool (P) is pulled out.

In this case, the inner overlapping portion (11a) and the outer overlapping portion (11b) of the clamp band (11) are overlapped three times by a certain amount (X) through the intermediate overlapping portion (11c). Because of being wound into a double circular spiral state, the diameter of the clamp band (11) can be lightly contracted and deformed under a remarkably small tightening torque by the above-mentioned drawing-type operating tool (P). By maintaining extremely high roundness,
The inner peripheral surface (tightening action surface) of the clamp band (11) can be evenly brought into close contact with the fixed object (10).

When the fixed object (10) itself is made of a rubber material having elasticity, the clamp band (11) is also tightly fixed to the fixed object (10) by the elasticity. Even if the fixed object (10) loses its elasticity due to aging over time or is made of a hard synthetic resin material having no elasticity, the clamp band (11) can be used. Since the telescopic spring force by the floating leg piece (23) at the double overlap portion is accumulated in the fixed object (1),
A firm tightening state in which the hardness change and thickness change of 0) are elastically absorbed by themselves, and the whole surface is in close contact with the fixed object (10);
Flattening of the entire clamp band (11) can be achieved.

[0069]

As described above, according to the present invention, a clamp band (11) made of a metal strip material (M) cut to a fixed length (L) is formed into an inner overlapped portion (one end side). As in the case of 11a), the outer overlapped portion (11b) which is the other end side of the winding and bending forms an overall double circular spiral state in which the fixed portion (X) is triple overlapped through the intermediate overlapped portion (11c). It is wound and bent to make it three-dimensional, and the diameter of the clamp band (11) is artificially forcibly shrunk and deformed, so that a fluid feeding hose made of a plastic such as rubber or synthetic resin, a dust-proof bellows, a boot for a shaft coupling, etc. In the double spiral clamp fitting for fixing the fixed object (10) of the above to the connection circumferential surface (32) of the various devices (31),

Only one cut-off end of the inner superposed portion (11a) is cut out as a pilot nose (12) having a fixed width (W1) smaller than the fixed width (W) of the metal strip material (M) itself. A first tool receiving hole (14) is formed in the overlapped portion (11a), and the first tool receiving hole (14) is opened from the opening edge adjacent to the pilot nose (12) in the first tool receiving hole (14). While the nail (15) is bent out to the raised state,

In the outer overlapped portion (11b), the first fixed claw receiving hole (16) and the second tool receiving hole (17) are sequentially distributed in an open state in parallel from the other end of the cut-out portion. The first fixed claw (18) is bent in an inwardly depressed state from the opening edge on the other end side of the first fixed claw receiving hole (16), and the first fixed claw receiving hole in the second tool receiving hole (17). From the opening edge on the side adjacent to (16), the second tool locking claw (19) is bent to an outwardly raised state,

The intermediate overlapping portion (11c) has a nose receiving hole (20) for allowing the pilot nose (12) of the inner overlapping portion (11a) to escape, and the second tool engagement of the inner overlapping portion (11a). The communication holes (21) through which the claws (19) are released are distributed in parallel in an open state, and the second fixing claws (2) are opened from the opening edge of the communication holes (21) adjacent to the nose receiving holes (20).
2) bend out to the raised state,

The drawing tool (P) is drawn into both the first tool locking claw (15) of the inner overlapping portion (11a) and the second tool locking claw (19) of the outer overlapping portion (11b). Of the pair of working claws (3) are locked.
When the diameter of the clamp band (11) is forcibly contracted and deformed by pulling and squeezing 3), the first fixed claw (18) of the outer overlapping portion (11b) and the intermediate overlapping portion (11c). And the second fixed claw (22) are set so as to bite and lock each other.

The second overlapping portion (11b) of the outer overlapping portion (11b) extends from the communication hole (21) for inserting the tool into the intermediate overlapping portion (11c).
A circumscribed zone (X) until reaching the tool receiving hole (17)
From 1), a plurality of floating leg pieces (23) scattered and distributed are cut and raised in an inwardly bent state, and overlap with the circumscribed zone (X1) to overlap the intermediate overlapping portion (11c).
From the nose receiving hole (20) of the
The clamp band can be elastically brought into contact with the inscribed zone (X2) of the floating leg piece (23) until it reaches the first tool receiving hole (14) of (a). (11) Since the telescopic spring force is accumulated in itself, there is an effect that the problem of the prior art described at the beginning can be completely improved.

That is, according to the above configuration of the present invention, the inner overlapping portion (11a) and the outer overlapping portion (11b) of the clamp band (11) for tightening the fixed object (10) are formed by:
The intermediate polymerized portion (11c) is bent and three-dimensionally wound into an overall double circular spiral state that overlaps three times by a certain amount (X) through the intermediate polymerized portion (11c).
c) a plurality of cut and raised inwardly bent from the circumscribed zone (X1) from the communication hole for tool escape (21) to the second tool receiving hole (17) of the outer overlapped portion (11b). Of the floating legs (23) have their circumscribed zones (X
The above intermediate polymerized portion (1) which overlaps with (1) two times
The clamp band is elastically contacted from the nose receiving hole (20) of 1c) to the inscribed zone (X2) of the inner overlapped portion (11a) until reaching the first tool receiving hole (14). (11) Since the expansion and contraction spring force in the diametric direction is accumulated in itself, the fixed object (10) is a dust-proof bellows or a boot for a shaft coupling molded from a hard synthetic resin material having no temporary elasticity. Even if the object to be fixed (10) is a fluid feeding hose made of an elastic rubber material or the like and the elasticity is lost due to aging over time, these objects are replaced with various devices. (31)
Can be brought into close contact with the connection circumferential surface (32) with extremely high roundness, and a stable and firm tightened state can be obtained.

Further, the floating leg piece (23) serving as a telescopic spring element of the clamp band (11) is different from the elastic bump of the present invention described at the outset, in that the double overlap state of the clamp band (11) is provided. As a plurality of pieces scattered and distributed in the circumscribed zone (X1), the circumscribed zone (X1) is cut and bent inward from the circumscribed zone (X1), and the cut-and-raised tip portion elastically moves to the corresponding inscribed zone (X2). , The weight distribution along the circumferential direction of the clamp band (11) is not particularly deviated, and there is no possibility that the clamp band (11) may break due to interference with peripheral members. As a result of maintaining the state, the apparatus can be used without any trouble in a device such as a vehicle that receives rotational force, vibration, and impact, and in combination with the uniform tightening force acting on the fixed object (10),
There is no risk of misalignment or falling off.

Furthermore, even if the elastic aneurysm of the known invention described at the beginning can cause the temporary clamp band itself to exert the elastic spring force, it is bent and raised outwardly from its outer overlapped portion, and Since the clamp band is locally displaced locally, it is easily broken due to stress concentrated on the bent and raised end portion, and the damage no longer exerts the expansion and contraction spring force.

In this regard, the floating leg piece (23) of the present invention
Is interposed between the circumscribed band (X1) and the inscribed band (X2) in the clamp band (11), which maintain a double overlap state, as a plurality of interspersed distribution states. The acting stress is effectively dispersed, and even if a part of the floating leg piece (23) is lost, it is possible to exert the above-mentioned elastic spring force without hindrance, and it is not only excellent in durability, but also In combination with the formation of the entire double circular spiral shape which overlaps three times by the predetermined amount (X), the clamp band (11) can be provided with extremely high roundness. .

Further, in the intermediate overlapping portion (11c) of a fixed amount (X) in which the inner overlapping portion (11a) and the outer overlapping portion (11b) of the clamp band (11) maintain a triple overlap state, The first fixed claw (18) bent inwardly from the overlapped portion (11b) and the second fixed claw (22) bent out from the middle overlapped portion (11c) in an outwardly raised state. The clamp band (11) can be fixed in a circular spiral state by biting and engaging with each other.
Since the fixing claw (18) is provided at the cut-off end of the outer overlapped portion (11b), during use of the clamp band (11) by the biting engagement, the fixed claw (18) is moved from the cut-off end to the outer overlapped portion (11b). And the first and second fixing claws (18) (2) may be warped outward.
There is also an effect that the possibility of dissociation in 2) can be prevented.

These effects can be achieved in substantially the same manner by adopting the structure of the second aspect. In short, in the present invention, the inner overlapping portion (11a) of the clamp band (11) and the outer This is because the overlapped portion (11b) is a clamp fitting which is wound and bent three-dimensionally into an overall double circular spiral state which overlaps by a certain amount (X) three times through the intermediate overlapped portion (11c). Utilizing a portion where the intermediate polymerized portion (11c) double overlaps with the inner polymerized portion (11a) and the outer polymerized portion (11b), a plurality of portions acting as telescopic spring elements of the clamp band (11) are utilized here. A floating leg piece (23) can be provided, and the floating leg piece (23) elastically absorbs a change in hardness and a change in thickness of the fixed object (10) by itself, and the fixed object ( 0) than it is capable of exhibiting a self adjusting function for close contact with the entire surface of the.

In particular, if a plurality of floating leg pieces (23) are scattered as a pair on both side edges of the metal strip material (M) as in claim 4, the clamp band (11) of the clamp band (11) is formed. The circumscribed band (X
1) and the inscribed zone (X2) can be maintained in a stable overlapping state in parallel with each other, and one or a plurality of elongated holes (2) as in claims 5 and 8.
5) can be opened without any trouble on the longitudinal center line of the metal strip material (M).
By forming the opening, there is an effect that the weight of the clamp band (11) itself can be reduced.

On the other hand, if the configuration of claim 7 is adopted,
One or more elongated leg piece receiving holes (3) formed in the inscribed zone (X2) of the clamp band (11).
0), the weight of the clamp band (11) itself can be reduced, and of course, in combination with the floating leg piece (23) that can be released into the clamp band, the inscribed band (X2) and the circumscribed band (X1). Can be maintained in an accurate double overlap state without shifting the position in the lateral direction,
An object to be fixed (10) through the leg piece receiving hole (30)
The seat (29) of the floating leg (23) which elastically contacts the
Thereby, it is possible to prevent the clamp band (11) from inadvertently idling with respect to the fixed object (10), and it is possible to maintain a stable and firm use state.

Further, if the constitutions of claim 6 and claim 9 are adopted, the floating leg pieces (23) scattered and distributed on both side edges of the metal strip material (M) are placed between the opposing floating leg pieces (23).
Since one or a plurality of lateral displacement prevention pieces (26) are interposed,
As a result, the circumscribed band (X1) and the inscribed band (X2) that double overlap the clamp band (11) are
The risk of the relative lateral displacement (axial direction) being displaced can be effectively prevented by itself, and the properly aligned overlap state can be maintained.

[Brief description of the drawings]

FIG. 1 is a partially cutaway plan view showing an expanded flat state of a clamp according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is a perspective view showing a product obtained by three-dimensional winding and bending of FIG. 1;

FIG. 4 is a front view of FIG. 3;

FIG. 5 is a perspective view showing the tightened state of FIG. 3;

FIG. 6 is a partially cutaway sectional view showing a state of use on an object to be fixed.

FIG. 7 is a partially enlarged plan view of FIG. 6;

FIG. 8 is an enlarged sectional view taken along line 8-8 in FIG. 7;

FIG. 9 is an enlarged sectional view taken along line 9-9 in FIG. 7;

FIG. 10 is a plan view showing a state in which a clamp is punched from a metal strip material.

FIG. 11 is an enlarged plan view showing a part of FIG.

FIG. 12 is a sectional view taken along line 12-12 of FIG. 11;

FIG. 13 is an enlarged plan view corresponding to FIG. 11 and showing a bending and erecting state following the punching of the clamp.

FIG. 14 is a sectional view taken along line 14-14 of FIG.

FIG. 15 is a perspective view illustrating a second embodiment of the present invention and corresponding to FIG. 3;

FIG. 16 is a sectional view showing the state of use of FIG.

FIG. 17 is a perspective view showing a third embodiment of the present invention and corresponding to FIG. 3;

FIG. 18 is a perspective view corresponding to FIG. 3, showing a fourth embodiment of the present invention.

FIG. 19 is a sectional view showing the state of use of FIG. 18;

FIG. 20 is an enlarged sectional view taken along line 20-20 in FIG.

FIG. 21 is a perspective view corresponding to FIG. 3, showing a fifth embodiment of the present invention.

FIG. 22 is a perspective view showing the tightened state of FIG. 21.

FIG. 23 is a sectional view showing the state of use of FIG. 21;

FIG. 24 is an enlarged sectional view showing a part of FIG. 23;

FIG. 25 is a perspective view corresponding to FIG. 3, showing a sixth embodiment of the present invention.

FIG. 26 is a front view of FIG. 25.

FIG. 27 is a perspective view corresponding to FIG. 3, showing a seventh embodiment of the present invention.

FIG. 28 is a sectional view showing the state of use of FIG. 28;

FIG. 29 is a front view showing a state in which the clamp is temporarily fixed to the object to be fixed and a state in which the drawing-type operating tool is locked.

FIG. 30 is a front view showing a tightened state by a drawing operation of the clamp fitting following FIG. 29;

[Explanation of symbols]

 (10) ・ Fixed object (11) ・ Clamp band (11a) ・ Inner overlapping part (11b) ・ Outer overlapping part (11c) ・ Intermediate overlapping part (12) ・ Pilot nose (14) ・ First tool receiving hole ( 15) 1st tool locking claw (16) 1st fixed claw receiving hole (17) 2nd tool receiving hole (18) 1st fixed claw (19) 2nd tool locking claw (20) Nose receiving hole (21), communication hole for tool escape (22), second fixed claw (23), floating leg piece (25), hole for removal (26), piece for preventing horizontal misalignment (27), seating (29)・ Seat (30) ・ Leg piece receiving hole (31) ・ Various devices (32) ・ Connection circumferential surface (33) ・ Working claw (34) ・ Handle (35) ・ Assembly fulcrum shaft (M) ・ Metal strip material (P) ・ Operation tool (L) ・ Overall length of clamp band (X) Certain triple overlap amount (X1), clamp band circumscribing band (X2) - clamp band inscribed band of the (W), the entire width (W1) of the clamping band pilot constant width of the nose

[Procedure amendment]

[Submission date] June 16, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 2

[Correction method] Change

[Correction contents]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

[0011] The intermediate overlapping portion has a nose receiving hole into which the pilot nose of the inner overlapping portion escapes and a communication hole through which the first tool engaging claw of the inner overlapping portion escapes in parallel. The second fixing claw is bent outward from the opening edge on the side of the communication hole adjacent to the nose receiving hole so as to protrude outward.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction contents]

The intermediate overlapping portion has a nose receiving hole for allowing the pilot nose of the inner overlapping portion to escape therethrough and a communication hole for allowing the first tool engaging claw of the inner overlapping portion to escape therefrom in a parallel arrangement. The second fixing claw is bent outward from the opening edge on the side of the communication hole adjacent to the nose receiving hole so as to protrude outward.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name]

[Correction method] Change

[Correction contents]

When the fixed object (10) itself is made of a rubber material having elasticity, the clamp band (11) is also tightly fixed to the fixed object (10) by the elasticity. Even if the fixed object (10) loses its elasticity due to aging over time or is made of a hard synthetic resin material having no elasticity, the clamp band (11) can be used. Since the telescopic spring force by the floating leg piece (23) at the double overlap portion is accumulated in the fixed object (1),
A firm tightening state in which the hardness change and thickness change of 0) are elastically absorbed by themselves, and the whole surface is in close contact with the fixed object (10);
It can be achieved the overall flattening of the clamp band (11).

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0072

[Correction method] Change

[Correction contents]

The intermediate overlapping portion (11c) has a nose receiving hole (20) for allowing the pilot nose (12) of the inner overlapping portion (11a) to escape, and the first tool engagement of the inner overlapping portion (11a). The communication holes (21) into which the claws (15) are relieved are distributed in parallel in an open state, and the second fixing claws (2) are opened from the opening edge of the communication holes (21) adjacent to the nose receiving holes (20).
2) bend out to the raised state,

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0079

[Correction method] Change

[Correction contents]

Further, in the intermediate overlapping portion (11c) of a fixed amount (X) in which the inner overlapping portion (11a) and the outer overlapping portion (11b) of the clamp band (11) maintain a triple overlap state, The first fixed claw (18) bent inwardly from the overlapped portion (11b) and the second fixed claw (22) bent out from the middle overlapped portion (11c) in an outwardly raised state. The clamp band (11) can be connected and fixed in a circular spiral state by biting and locking, and the first fixing claw (18) has an outer overlapped portion (11b). And the outer overlapped portion (11b) may be warped outward from the cut end during use of the clamp band (11) due to the bite lock. First and second fixing pawls by which (18)
There is an effect that the dissociation of (22) can be prevented.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] FIG. 28

[Correction method] Change

[Correction contents]

28 is a cross-sectional view illustrating the use state of FIG 7.

Claims (9)

[Claims] 1. A clamp band (11) made of a metal strip material (M) cut to a predetermined length (L) is wound and bent at the other end similarly to an inner overlapped portion (11a) at one end of the bent band. The outer overlapping portion (11b) on the side is wound and bent into a three-dimensional overall double spiral shape by overlapping with the intermediate overlapping portion (11c) by a certain amount (X), and the clamp band is formed. By artificially forcibly deforming the diameter of (11), a fluid feeding hose made of a plastic such as rubber or synthetic resin, a dustproof bellows, a boot for a shaft coupling, and other fixed objects (10) are formed. , Various equipment (31)
In the double spiral clamp used for fixing to the connection circumferential surface (32) of (1), only the cut end of the inner overlapping portion (11a) is smaller than the fixed width (W) of the metal strip material (M) itself. Notched as a pilot nose (12) having a width (W1), a first tool receiving hole (14) is also formed in the inner overlapping portion (11a), and the pilot hole in the first tool receiving hole (14) is formed. The first tool engaging claw (15) is bent outwardly from the opening edge on the side adjacent to the nose (12), while the outer overlapped portion (11b) is separated from the other end side by the first one. The fixed claw receiving hole (16) and the second tool receiving hole (17) are open-distributed in a side-by-side state, and the first fixed claw receiving hole (16) is separated from the opening edge at the other end of the first fixed claw receiving hole (16). The claw (18) is bent in an inwardly depressed state, and the second tool engaging claw (19) is opened from the opening edge of the second tool receiving hole (17) adjacent to the first fixed claw receiving hole (16). Is bent outward, and the intermediate polymerized portion (11c) is provided with an internal polymerized portion (11).
a) a nose receiving hole (20) into which the pilot nose (12) escapes;
a) The communication holes (21) into which the second tool engagement claws (19) are relieved are distributed in parallel in an open state, and the communication holes (21) on the side adjacent to the nose receiving holes (20). The second fixing claw (22) is bent outward from the opening edge so as to protrude outward, and the first tool engaging claw (15) of the inner overlapping portion (11a) is bent.
The action claw (33) of the drawing-type operating tool (P) is applied to both the second tool engagement claw (19) of the outer overlapped portion (11b) and the outside overlapped portion (11b).
When the diameter of the clamp band (11) is forcibly shrunk and deformed by pulling and squeezing the pair of action claws (33), the second overlapping portion (11b) of the outer overlapping portion (11b) is locked. 1 fixed claw (18) and intermediate polymerization portion (11
c) and the second fixing claw (22) are set so as to bite and lock each other, and from the communication hole (21) for tool escape of the intermediate overlap portion (11c) to the outside overlap portion (11b). From the circumscribed zone (X1) until reaching the second tool receiving hole (17),
A plurality of floating leg pieces (23) distributed in a dotted manner are cut and raised in an inwardly bent state, and the nose receiving holes (20) of the intermediate polymerization portion (11c) overlapping with the circumscribed zone (X1) doubly. ) To the first tool receiving hole (14) of the inner overlapped portion (11a).
(2) The clamp band (11) itself is made to accumulate diametrical expansion and contraction spring force by making the cut and raised ends of the floating leg piece (23) elastically contact each other. Double spiral clamp. 2. A clamp band (11) made of a metal strip material (M) cut to a predetermined length (L) is wound and bent at the other end in the same manner as an inner overlapped portion (11a) at one end side of the bend. The outer overlapping portion (11b) on the side is wound and bent into a three-dimensional overall double spiral shape by overlapping with the intermediate overlapping portion (11c) by a certain amount (X), and the clamp band is formed. By artificially forcibly deforming the diameter of (11), a fluid feeding hose made of a plastic such as rubber or synthetic resin, a dustproof bellows, a boot for a shaft coupling, and other fixed objects (10) are formed. , Various equipment (31)
In the double spiral clamp used for fixing to the connection circumferential surface (32) of (1), only the cut end of the inner overlapping portion (11a) is smaller than the fixed width (W) of the metal strip material (M) itself. Notched as a pilot nose (12) having a width (W1), a first tool receiving hole (14) is also formed in the inner overlapping portion (11a), and the pilot hole in the first tool receiving hole (14) is formed. The first tool engaging claw (15) is bent outwardly from the opening edge on the side adjacent to the nose (12), while the outer overlapped portion (11b) is separated from the other end side by the first one. The fixed claw receiving hole (16) and the second tool receiving hole (17) are open-distributed in a side-by-side state, and the first fixed claw receiving hole (16) is separated from the opening edge at the other end of the first fixed claw receiving hole (16). The claw (18) is bent in an inwardly depressed state, and the second tool engaging claw (19) is opened from the opening edge of the second tool receiving hole (17) adjacent to the first fixed claw receiving hole (16). Is bent outward, and the intermediate polymerized portion (11c) is provided with an internal polymerized portion (11).
a) a nose receiving hole (20) into which the pilot nose (12) escapes;
a) The communication holes (21) into which the second tool engagement claws (19) are relieved and the openings are distributed in a side-by-side state, and the communication holes (21) on the side adjacent to the nose receiving holes (20). The second fixing claw (22) is bent outward from the opening edge so as to protrude outward, and the first tool engaging claw (15) of the inner overlapping portion (11a) is bent.
The action claw (33) of the drawing-type operating tool (P) is applied to both the second tool engagement claw (19) of the outer overlapped portion (11b) and the second tool engagement claw (P).
When the diameter of the clamp band (11) is forcibly shrunk and deformed by pulling and squeezing the pair of working claws (33), the second overlapping portion (11b) of the outer overlapping portion (11b) is locked. 1 fixed claw (18) and intermediate polymerization portion (11
c) and the second fixing claw (22) are set so as to bite and lock each other, and the nose receiving hole (2) of the intermediate overlapping portion (11c) is set.
From the inscribed zone (X2) from the point (0) to the first tool receiving hole (14) of the inner overlapped portion (11a), a plurality of floating leg pieces (23) distributed in a dotted manner are bent outward. And a second tool receiving hole (21b) of the outer overlapped portion (11b) from the tool escape communication hole (21) of the intermediate overlapped portion (11c) which double overlaps with the inscribed zone (X2). 17) until the circumscribed band (X)
1) The diametrical expansion and contraction spring force is accumulated in the clamp band (11) itself by making the cut and raised ends of the floating leg piece (23) elastically contact with each other. Double spiral clamp. 3. The method according to claim 1, wherein a plurality of floating leg pieces are distributed at pitches at regular intervals on the longitudinal center line of the metal strip material. Heavy spiral clamp. 4. A plurality of floating leg pieces (23) are scattered and distributed on both side edges of the metal strip material (M) in a pair of opposed parallel or alternate staggered arrangements. The double spiral clamp according to claim 1. 5. A plurality of floating leg pieces (23) are scattered along both side edges of a metal strip material (M), and folded inward from a circumscribed zone (X1) of the clamp band (11). One or a plurality of elongated holes (25) are formed in the inscribed zone (X2) which overlaps with the circumscribed zone (X1) while being cut and raised in a bent state.
2. The double spiral clamp according to claim 1, wherein an opening is formed along a longitudinal center line of the metal strip material (M). 6. A state in which a plurality of floating leg pieces (23) are scattered along both side edges of a metal strip material (M) and bent inward from a circumscribed zone (X1) of the clamp band (11). From the inscribed zone (X2), which overlaps the circumscribed zone (X1) while being cut and raised in a bent state, one or two or more lateral zones located on the longitudinal center line of the metal strip material (M) 2. The double spiral clamp according to claim 1, wherein the slip prevention piece is cut and raised. 7. A state in which a plurality of floating leg pieces (23) are scattered and distributed along the longitudinal center line of the metal strip material (M), and inward from a circumscribed zone (X1) of the clamp band (11). While being cut and raised in a bent state, each of the cut and raised ends is further bent as a flat seat (29), while the floating leg (X2) overlaps with the circumscribed zone (X1). 2. The double spiral clamp according to claim 1, wherein one or a plurality of elongated leg piece receiving holes (30) into which the piece (23) escapes are formed correspondingly. 8. A state in which a plurality of floating leg pieces (23) are scattered and distributed along both side edges of the metal strip material (M) to face outward from an inscribed zone (X2) of the clamp band (11). One or a plurality of elongated holes (25) are formed in a circumscribed zone (X1) which doubles and overlaps the inscribed zone (X2) while being cut and raised in a bent state.
3. The double spiral clamp according to claim 2, wherein an opening is formed along a longitudinal center line of the metal strip material (M). 9. A state in which a plurality of floating leg pieces (23) are scattered along both side edges of the metal strip material (M) so as to face outward from an inscribed zone (X2) of the clamp band (11). From the circumscribed zone (X1) that overlaps with the inscribed zone (X2) while being cut and raised in a bent state, one or two or more pieces located on the longitudinal center line of the metal strip material (M) 3. The double spiral clamp according to claim 2, wherein the lateral deviation preventing piece is cut and raised.