JP2002130217A - General-purpose clamp fitting adjustable for clamp gauge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clamp fitting that can adjust the clamp gauge of many sizes, in response to the thick of an object to be clamped. SOLUTION: A clamp band (10) is made of a metallic tie-plate material (M) in a constant length. The inside overlapped part (10a) of the band has multiple outwardly coupled claws (17a) to (17b) and a first hooking claw (19) for a working tool, which are curved diagonally, outward and upward, in sequence from a narrow wide inserting nose (12) of a free end to a non-overlap part (10c) in an intermediate area. The freely detachable end is one end of the band that is detached. Also, the outside overlap part (10b) of the band has a diagonal inwardly coupled claw (24), the second locking claw (25) of an outward tunnel type for the working tool, and a length hole (22), receiving the nose (12) in sequence from the free end to the non-overlapped part. The coupling selectively claw-locks one of the outwardly coupled, claws. Accordingly, the clamp gauge (D) of the clamp band is deformed contractively by the working tool, that is made to lock 1 on the first and the second locking claws.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a general-purpose clamp having an adjustable diameter.

[0002]

2. Description of the Related Art In general, objects to be tightened such as fluid supply hoses made of plastics such as rubber and synthetic resin, as well as air-conditioning ducts, dust-proof bellows, shaft boots, rust-proof covers, and the like, are covered. Open clamps for tightening and fixing to the connection circumference of valve bases, joint pipes, axles, and other various devices that are to be used. A pair of operating tool locking means for forcibly contracting and deforming the tightening diameter of the clamp band from both portions is formed as an overlapped portion, and the other end of the separation is set as an outer overlapped portion.

In addition, when the tightening aperture of the clamp band is forcibly contracted and deformed by an operating tool such as a plier used to lock the pair of operating tool locking means, the mechanical locking is performed. The connecting means preferably comprises an outwardly projecting locking claw on the inner overlapping portion of the clamp band and an opposite inwardly rising locking claw or locking hole on the outer overlapping portion of the clamp band. Is usually formed corresponding to the

In particular, Japanese Patent Publication No. 5-63641 also discloses a clamp fitting in which a plurality of locking claws of mechanical connecting means protruding outward from an inner overlapping portion of the clamp band are arranged in a plurality of dotted distribution states. No. 7-10743
4, JP-A-8-232919, and Japanese Patent No. 275896
No. 8 and Japanese Patent No. 3001266.

Since these known inventions are substantially the same, Japanese Patent Publication No.
Taking No. 107434 as a representative example, in this case, a plurality of detent projections (19) are arranged at an equal pitch (p) to the inner overlapping portion (18) of the band body (11), and the band body (11) is formed. A plurality of locking holes (15) engageable with the detent projections (19) while being cut or raised outward by a fixed height (h) from the same pitch (p). The openings are also distributed in the outer overlapping portion (13) of the bunt body (11).

[0006]

That is, the above-mentioned Tokuhei 7
In the case of the invention of -107434, the detent protrusion (19) outwardly from the inner overlapping portion (18) of the band body (11).
And a locking hole (1) opened in the outer overlapping portion (13).
5) is formed so as to be able to completely engage as a plurality of identical pieces, and the tightening diameter of the band body (11) is not adjusted and used according to the thickness of the object to be tightened. The plurality of detent projections (19) and the locking holes (15) are used as mechanical coupling means only to secure the overall overlapping engagement state.

For this reason, it is necessary to prepare and prepare in advance clamps of various tightening diameters according to the change in the thickness of the object to be fastened, and to stock a wide variety of products of the standard. It must be used separately according to the thickness, and is inferior in mass production effect and versatility as a clamp.

In particular, if the object to be fastened is new or genuine, and it is used or non-genuine, and the clamp is replaced for repair or modification, the thickness of the object to be fastened is large. Due to non-standard variations in pod thickness, etc., standard clamps that have been prepared in advance with a fixed tightening diameter cannot accurately and stably fix the object to be tightened. It cannot be used at all.

[0009]

SUMMARY OF THE INVENTION The present invention intends to drastically solve the above-mentioned problems. For this purpose, a clamp band made of a metal strip material cut to a fixed length is cut off. The inner polymerized part on one end side is cut off and bent into a circular ring shape that will be partially overlapped with the outer polymerized part on the other end side,

[0010] By forcibly deforming the clamped diameter of the clamp band, a fluid supply hose or air-conditioning duct, a dust-proof bellows, a shaft boot, a rust-proof hose made of a plastic such as rubber or synthetic resin is formed. Covers and other clamped objects are clamped with clamps that fasten and fix to the peripheral surface of the connection of various devices.

The free end of the inner superposed portion is cut out as an insertion nose having a fixed width smaller than a fixed width of the metal strip material,

In the inner overlapping portion, a plurality of inward connecting claw selection receiving holes and a first operating tool receiving hole are sequentially cut out from the insertion nose toward the side where the intermediate non-overlapping portion exists in the clamp band. Aperture distribution

The cutout opening edge on the side adjacent to the insertion nose in each of the selection receiving holes is an outward connecting claw, and the cutout opening edge on the side of the first operating tool receiving hole adjacent to the selection receiving hole is the first.
As the operation tool locking claw, the plurality of outward connection claws and the first operation tool locking claw are bent and raised obliquely outward in the same posture state.

[0014] From the free end of the outer overlapping portion to the side where the intermediate non-overlapping portion exists, the alternative receiving hole of the outward connecting claw, the second operating tool receiving elongated hole, and the insertion nose of the insertion nose are sequentially formed. Cut out the receiving slots and distribute the openings,

The cutout opening edge located on the free end side of the outer overlapping portion in the alternative receiving hole for the outward connecting claw is defined as an inward connecting claw, and is directed obliquely inward opposite to the outward connecting claw. Bend and raise,

At the boundary between the alternative receiving hole and the second operating tool receiving elongated hole, a second operating tool locking claw in the form of a tunnel extending by a predetermined distance therebetween is bent outward. hand,

The operating tool inserted and locked into both the first operating tool retaining claw of the first operating tool receiving hole and the second operating tool retaining claw of the second operating tool receiving elongated hole is pulled and drawn. By selectively biting and locking the inward connecting claws of the outer overlapping portion to the outward connecting claws of the inner overlapping portion, the tightening diameter of the clamp band can be adjusted to be large or small. It is characterized by the following.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of a clamp according to the present invention; FIG.
Indicates a product that has been rolled and bent to form a three-dimensional structure and the state of use. The numerical values indicating the length, thickness, width, height, angle, and the like described below are merely examples, and needless to say, they are organically related to each other.

As a material of the clamp fitting according to the present invention, stainless steel (for example, SUS30) having a constant thickness (T) (about 0.8 mm) and a width (W) (about 10 mm) is used.
1, SUS304 or SUS431) and other metal strips (M) are adopted and cut from a long object in advance to an appropriate constant length (L) (approximately 415.5 mm). Becomes

(10) Plastic material such as rubber or synthetic resin is formed by winding and bending the metal strip material (M) cut into a fixed length (L) into a circular ring shape to form a three-dimensional shape. Fluid supply hose, air-conditioning duct, dust-proof bellows, shaft boot, and other tightening objects (A)
Is a clamp band which acts to tighten the connection circumferential surface of the various devices (B) to be treated, and is partially cut off at one end of the metal strip material (M) so that the other end is circumscribed. Overlap.

That is, as is apparent from FIGS.
One end of the metal strip material (M) is used as an inner overlap portion (10a) of the clamp band (10), and the other end is similarly used as an outer overlap portion (1) of the clamp band (10).
As 0b), it is wound up in the partially overlapped state. (10c) shows the remaining non-overlapping portion of the non-overlapping clamp band (10).

Needless to say, the clamp band (10) has a constant width (W) of the metal band material (M) itself, but only the free end of the inner overlapping portion (10a) is tapered. Via the notched side edge (11), the constant width (w) narrower than the constant width (W) of the metal strip material (M).
1) Projected as a (about 4 mm) insertion nose (12). (D1) is the clamp band (10)
Nose (1) extending along the longitudinal center line of the
2) shows the overhang length, and the constant length (d
1) is about 9 mm.

In this case, the projecting tip of the insertion nose (12) is formed as a mountain-shaped leading pilot piece (12a) and has a constant height of about 3 to 4 times the constant thickness (T) of the metal strip material (M). It is bent and raised outward by an amount (h1) (about 3 mm).

As a result, even if the tightening diameter (D) of the clamp band (10) is adjusted to be large or small as described later, the leading pilot piece (12a) of the insertion nose (12) is connected to the outer overlapping portion (10b). It can be always and stably received in the nose receiving slot described later, and the inner overlapping portion (10a) of the clamp band (10).
It is possible to keep the overlap state in which the outer overlapped portion (10b) and the outer overlapped portion (10b) properly coincide with each other without fear of being relatively displaced in the width direction.

The inner overlapping portion (10a) of the clamp band (10) is sequentially inserted from the insertion nose (12) of the cutting free end to the side where the intermediate non-overlapping portion (10c) is present, as shown in FIGS. And the first to fourth selective receiving holes (14a), (14b), (14c), and (14) for the inward connecting claws.
d) as well as the first operating tool receiving holes (15) are distributed in the openings, all of which are scattered on the longitudinal center line of the clamp band (10).

First, the use state of the locking pin receiving hole (13) for winding and bending is not shown in the drawing.
The clamp band is received by receiving a locking pin planted from the circumferential surface of the core metal roll for winding and bending the clamp band, and rotating the core metal roll in a locked state with the locking pin, thereby forming the clamp band ( 10) is used for winding and bending into a circular ring shape, and is located near the protruding base end of the insertion nose (12) in the inner overlapping portion (10a) and has a constant opening diameter or opening width. (X) Cut out into a circular or elliptical shape in plan view with (about 4 mm).

Next, the first to fourth selective receiving holes (14a) (14b) (14c) (14d) for the inward connecting claws.
Is for selectively accepting an inward connecting claw, which will be described later, of the outer superposed portion (10b) to adjust and use the tightening diameter (D) of the clamp band (10). At a position relatively far from the locking pin receiving hole (13) by a certain distance (d2) (about 32 mm), a substantially semicircular shape in plan view having the same directionality and size as in FIGS. And, preferably, are cut out in an intensive permutation state maintaining an equal pitch (p) (about 5.5 mm) between adjacent ones. The constant opening width (x1) of each of the selective receiving holes (14a) to (14d) is about 4 mm, and the constant opening length (y1) is about 3 mm.

At this time, each of the selective receiving holes (14a) to
The directionality of (14d) is apparent from FIGS. 3 and 4, and an arc-shaped cutout opening edge (16) bordering the substantially semicircle is formed by the intermediate non-overlapping portion (10c) of the clamp band (10). A straight cut-out opening edge, also on the presence side, also bordering a substantially semicircle, as a line segment substantially perpendicular to the longitudinal center line of the clamp band (10), on the presence side of the insertion nose (12), In a permuted state.

Then, each of the selective receiving holes (14a)
The straight cut-out opening edges (14d) to (14d) are complementary or male and female first to fourth outward connecting claws (17a) (17a) ( 17b) (17c) (17d), a fixed height (h2) from the clamp band (10)
(Approximately 1.3 mm) and an angle of inclination (α) (approximately 25 degrees). Moreover, each of the outward connecting claws (17a) to (17d) is formed as a substantially inverted U-shaped crossing each of the selection receiving holes (14a) to (14d) as shown in FIGS.

As a result, each outward connecting claw (17a) bent obliquely outward from the clamp band (10).
-(17d) presents a substantially semicircular shape in a plan view so that the back surface (surface) of each of the selective receiving holes (14a) to (14d) borders the overall ellipse in a plan view. It is in a posture state facing the existence side of the insertion nose (12).

In this respect, in the illustrated embodiment, the straight cutout opening edges of the first to fourth selection receiving holes (14a) to (14d) are connected to the first to fourth outward connection claws (17a) to
(17d), all of them are bent obliquely outward from the clamp band (10). These selective receiving holes (14a) to (14d) and the outward connecting claws (17a) to
The number of installations of (17d) is not limited to four in total, and at least two is sufficient.

Further, each of the outward connecting claws (17a) to (1a)
The bending height (h2) of 7d) is about 1.5 to 2.0 times the constant thickness (T) of the metal strip material (M), and is similarly bent from the clamp band (10). It is preferable that the inclination angle (α) is set as an acute angle smaller than about 45 degrees.

Further, the first operating tool receiving hole (1)
5) are first to fourth selective receiving holes (14) for the inward connecting claws.
a) to (14d), the clamp band (10)
To the intermediate non-polymerized portion (10c) at a position adjacent to the fourth selective receiving hole (14d) closest to the intermediate non-polymerized portion (10c) side.
A constant opening width (x2) larger than (14d) (about 5 m
m) and an opening length (y2) (approximately 4.5 mm).

Then, the first operating tool receiving hole (15)
3 and 4, an arc-shaped cutout opening edge (18) bordering a substantially semicircle is located on the side where the intermediate non-polymerized portion (10c) exists in the clamp band (10). The straight cut-out opening edge, which also borders a substantially semicircle, is also a clamp band (1
0) as a line segment substantially orthogonal to the longitudinal center line.
It is located on the side adjacent to the selection receiving hole (14d).

In addition, the first operating tool receiving hole (1)
The straight cut-out opening edge of 5) serves as a first operating tool locking claw (19), and is formed from a clamp band (10) as shown in FIGS.
It is also bent obliquely outward by a constant height (h3) (about 1.5 mm) and an inclination angle (β) (about 25 degrees) slightly higher than (17d). The connecting claws (17a) to (17d) are arranged in a permutation state.

At this time, the first operating tool engaging claw (19) also crosses the first operating tool receiving hole (15) in accordance with each of the outward connecting claws (17a) to (17d) in FIG. 6
The back surface (surface) of the first operating tool locking claw (19) is formed in a substantially inverted U-shape as in the first embodiment.
As an outline of the overall oval shape in plan view with the operating tool receiving hole (15), the remaining semicircular shape in plan view is as follows:
It is located at the boundary between the first operating tool receiving hole (15) and the fourth selective receiving hole (14d).

Each of the outward connecting claws (17a) to (17)
d) and the first operating tool locking claw (19) are almost inverted U
It is bent outward from the clamp band (10) by the constant inclination angles (α) and (β) in the same posture state, so that it receives an excessive tightening torque by the operation tool described later, but never warps. There is no risk of getting up and down or being torn, and a high-strength counter force can be exhibited.

The first operating tool receiving hole (15) is formed to be slightly larger than each of the selective receiving holes (14a) to (14d), and the first operating tool locking claw (19) is formed as described above. Outward connecting claws (17a) to (17d)
Since these are bent slightly higher than that, the difference is used as an identification mark to prevent an operation tool to be described later from being erroneously locked and used with each of the outward connection claws (17a) to (17d). Can be.

The operating tool is inserted into the first operating tool receiving hole (1).
5) In order to properly lock and use the first operating tool locking claw (19), the bending angle of the first operating tool locking claw (19) is set to an acute angle of about 45 degrees or less. While,
Each of the outward connection claws (17a) to (17d) may be set to be slightly larger than the inclination angle (α) of bending thereof, and further, the first operation tool locking claw (19) may be set to a second operation described later. In the form of a tunnel such as a tool locking claw, it can be bent outwardly from the inner overlapping portion (10a) of the clamp band (10).

On the other hand, the outer overlapping portion (10b) of the clamp band (10) has an inner overlapping portion (10a).
As shown in FIG. 1 and FIG. ), A second operating tool receiving slot (21) and a nose receiving slot (22) are distributed, and all of them are arranged in parallel on the longitudinal center line of the clamp band (10).

First, the alternative receiving holes (20) for the outward connecting claws selectively receive the first to fourth outward connecting claws (17a) to (17d) of the inner overlapping portion (10a). Again the clamping diameter of the clamp band (10) (D)
Is cut out in the vicinity of the free end of the outer overlapped portion (10b) as a substantially semicircle in plan view as shown in FIG. The constant opening width (x3) (about 4 mm) and opening length (y3) (about 3 m
m) has dimensions approximately equal to those of each of the selective receiving holes (14a) to (14d) cut out in the inner superposed portion (10a).

However, the direction of the alternative receiving hole (20) is the same as that of the first to fourth selective receiving holes (14a) to (14a).
An arc-shaped cutout opening edge (23), which is symmetrical to that of (14d) and borders a substantially semicircle, is formed by an intermediate non-overlapping portion (10) in the clamp band (10).
c), while a straight cutout opening edge, also bordering a substantially semicircular shape, forms a clamping band (1).
As a line segment substantially perpendicular to the longitudinal center line of 0), it is located on the free end side of the outer overlapped portion (10b).

The straight cut-out opening edge of the alternative receiving hole (20) is particularly suitable for the first to fourth outward connecting claws (17a) to (17a) of the inner overlapping portion (10a).
As an inward connecting claw (24) that bites and locks alternatively to (17d), as shown in FIGS.
0), it is bent obliquely inward by a constant height (h4) (about 1.3 mm) and an inclination angle (γ) (about 25 degrees), and the first to fourth outer portions of the inner superposed portion (10a). Speaking of the direction connection claws (17a) to (17d), they are in a posture facing each other correctly.

Further, the inward connecting claw (24) is formed in a substantially U-shape crossing the alternative receiving hole (20), and the connecting claw (24) obliquely inwardly inward from the clamp band (10). So that its back surface (back surface) borders the overall bottom view ellipse with the alternative receiving hole (20),
The remaining overlapped portion (10b) has a substantially semicircular shape as viewed from the bottom, and faces the free end of the outer overlapped portion (10b).

That is, while the first to fourth outward connecting claws (17a) to (17d) of the inner overlapping portion (10a) are bent outward from the clamp band (10), the outer overlapping portion is formed. The inward connecting claw (24) of (10b) is bent in the opposite inward direction, and each outward connecting claw (17a) to (17d) and the inward connecting claw (24) are bent substantially equal to each other. It has complementary heights (h2) and (h4) and bending inclination angles (α) and (γ), and has a complementary or male-female relationship in which it is bite-locked in a symmetric bending posture state facing each other.

Therefore, each of the outward connecting claws (17
a) to (17d) and the inward connecting claw (24) bite and engage with each other so as to slide relative to each other, and at this time, the inner overlapping portion (10a) and the outer overlapping portion (10b) of the clamp band (10) Will be drawn to the overlapping plane by itself, and a strong connection state in which they are in close contact with each other can be ensured. Outward connecting claws (17a) to (17) in the overlapping portion (10a).
There is no danger of the connection being released as long as it is restrained by the back surface of d) and the free end of the inner overlapping portion (10a) does not slide up on the back surface.

Similarly, each outward connecting claw (17a)-
(17d) is substantially an inverted U-shape, and the symmetrical inward connecting claws (24) are substantially U-shaped, all of which are curved. The inner polymerized portion (10a) and the outer polymerized portion (1
0b) is also drawn to the longitudinal center line of the clamp band (10) by itself, and the properly matched overlap state is stably maintained.

Further, the alternative receiving hole (20) for the outward connecting claw and the inward connecting claw (24) bent from the straight cutout opening edge thereof are provided on the outer overlapping portion () of the clamp band (10). Since it is located closest to the free end of 10b), there is no risk that its outer overlapped portion (10b) will inadvertently bend from the free end.

Next, the second operating tool receiving slot (21)
Is cut at a position relatively close to the alternative receiving hole (20) for the outward connection claw by a fixed distance (d3) (about 6.5 mm) as an elongated substantially elliptical shape in plan view as shown in FIG. Has been pulled out.

The opening width (x4) (about 5 mm) of the second operating tool receiving slot (21) is approximately the same as the opening width (x2) of the first operating tool receiving hole (15). Similarly, the opening length (y4) is set to a dimension (about 12 mm) longer than the opening length (y2) (about 4.5 mm) of the first operating tool receiving hole (15), and the inner overlapping portion (1
0a) to the first to fourth outward connecting claws (17a) to (1a).
Some of 7d) (two in the illustrated embodiment) are dimensioned so that they can also escape smoothly.

In that case, the second operating tool receiving slot (2
Although the cutout opening shape of 1) is described as being elongated and substantially elliptical in plan view, the cutout opening edge located on the side adjacent to the outwardly-receiving connecting claw optional receiving hole (20) has a clamp band (10). ) Is a straight cutout opening edge of a line substantially perpendicular to the longitudinal center line.

The boundary between the straight cutout opening edge of the second operating tool receiving slot (21) and the arc-shaped cutout opening edge (23) of the outward connection claw selection receiving hole (20). In the part, a second operating tool locking claw (25) in the form of a tunnel extending with the mutual distance (d3) (about 6.5 mm) as a fixed length,
It is bent outward by a fixed height (h5) (about 2.5 mm), and the inside of the tunnel and the inside of the second operating tool receiving slot (21) are in communication.

That is, the second operating tool engaging claw (25) of the outer overlapping portion (10b) of the clamp band (10).
Unlike the first operating tool engaging claw (19) of the inner overlapped portion (10a), it is formed in a substantially inverted U-shape as shown in FIGS. )
(About 6.5 mm), the second operating tool receiving slot (21), which forms one end, is engaged with a straight cutout opening edge of the second operating tool receiving slot (21). Clamp band (1
During the operation of shrinking and deforming the tightening diameter (D) of (0), the above-mentioned inner overlapping portion (1) is introduced into the almost inverted U-shaped tunnel.
Some of the outward connection claws (17a) to (17d) in FIG. 0a) (two in the illustrated embodiment) can be easily inserted.

For this purpose, the fixed length (d3) (about 6.5 m) of the second operating tool locking claw (25) in the form of a tunnel is used.
m) are the first to fourth outward connecting claws (17a) to (17).
d) is longer than the interval pitch (p) (about 5.5 mm), and the second operation tool locking claw (2
The bending height (h5) (about 2.5 mm) of 5) is greater than the bending height (h2) (about 1.3 mm) of the first to fourth outward connection claws (17a) to (17d). Is also set tall.

As described above, the second operating tool locking claw (2
5) As a tunnel of a fixed length (d3), almost inverted U
Since it is bent and raised in the shape of a letter, it can exert a high strength opposing force that can withstand excessive tightening torque by the operation tool described later, and can also work as a reinforcing bead of the clamp band (10). Will be.

Further, the nose receiving slot (22) receives the insertion nose (12) of the inner overlapping portion (10a) so that no step is formed on the clamping action surface of the clamp band (10). The clamp band (10) is used to adjust the tightening diameter (D) of the clamp band (10) to a large or small size, and is fixed at a distance (d4) (about 15) from the second operation tool receiving slot (21).
mm) in the direction in which the intermediate non-polymerized portion (10c) is present, as an elongated elliptical shape in plan view having a fixed opening width (x5) (about 4 mm) and opening length (y5) (about 34 mm). It has been cut out.

(26) is also the outer polymerized part (10b)
An elastic hump as a telescopic spring element interposed between the second operating tool receiving slot (21) and the nose receiving slot (22).
0), it is bent outward by a constant height (h6) (approximately 4 mm), and in the bent state of the clamp band (10), as shown in FIGS. 12, 13 and FIGS. The lower surface of the opening of the elastic hump (26) is
a).

That is, the elastic hump (26) is bent outward from the outer overlapped portion (10b) at the overlap portion between the inner overlapped portion (10a) and the outer overlapped portion (10b), so that the clamp is clamped. Band (1
This is for accumulating the expansion / contraction spring force along the circumferential direction of 0).

If such an elastic hump (26) is installed, the object to be tightened (A) is a molded article made of a hard synthetic resin having a poor elasticity, or a rubber or a rubber material having a high elasticity. If the elastic hump (26) is made of a soft synthetic resin but loses its elasticity due to aging or the like, the tightening action surface of the clamp band (10) is tightened by the elastic spring force of the elastic hump (26). This can be said to be suitable in that it can be fixedly integrated with the circumferential surface of the object (A) in an overall close contact state, and can absorb vibrations and shocks during use thereof.

In the illustrated embodiment, the elastic hump (26) is raised in an outward chevron shape by simple bending of the outer overlapping portion (10b). However, the circumference of the clamp band (10) is increased. As long as the elastic hump (26) can function as a telescopic spring element along the direction, the elastic hump (26) can be bent and raised into the above-mentioned continuous substantially inverted W-shaped or omega-shaped or other suitable bent shape.

The clamp fitting of the present invention having the above configuration is mass-produced from stainless steel or other metal strip material (M) having a constant width (W) and thickness (T) by, for example, the following production method. be able to.

That is, in the process of automatically and intermittently feeding the metal strip material (M), which is a long object, in one direction along the transfer line, a cutting die (not shown) is used first. The shape of the clamp band (10) also including the insertion nose (12), the locking pin receiving hole (13) and the first to fourth selective receiving holes (14a) to (14d) for the inward connecting claws, The first operating tool receiving hole (1
5), the alternative receiving hole (20) for the outward connection pawl, the second
Cutouts (so-called cutouts) of the operation tool receiving slot (21) and the nose receiving slot (22) are performed simultaneously.

Next, the metal strip material (M) after the cut-out processing is passed through a bending die (not shown), and the first to fourth outward connecting claws (17) of the clamp band (10) are formed.
a) to (17d), bending of the first operating tool locking claw (19), the inward connecting claw (24), and the second operating tool locking claw (25) (so-called doweling), The metal strip material (M) is cut to a required length (L) as a clamp band (10) and cut (so-called dimension cut),
At the same time or at the same time, insert the nose (1
2) Leading pilot piece (12a) or elastic hump (2)
6) The bending process is performed.

Then, the clamp band (10) having a fixed length (L) which is still in the unfolded state as shown in FIGS. 1 and 2 is finally sent to a forming machine (not shown), and the core metal roll of the forming machine is used. As a result, the inner superposed portion (10a) and the outer superposed portion (10b) are rolled into a circular ring shape that partially overlaps, and three-dimensionally formed, thereby finishing the product as shown in FIG.

Since the clamp fitting of the present invention finished as a product as shown in FIG. 11 is an open type, by using the same, the above-mentioned object to be tightened (A) can be used as a base, fitting pipe, axle, Clamp band (10) for fastening to the connection circumference of other various devices (B)
May be once wound around the object to be tightened (A) from the diameter direction so as not to fall off.

In the rolled state, as shown in FIG. 14, the inner overlapping portion (1) of the clamp band (10) is
0a) and the outer overlapped portion (10b) overlap in a temporarily fixed state, so that the inner overlapped portion (10b)
a) the first operating tool receiving hole (15) opening at
As shown in FIG. 14, both the operating tool locking claw (19) and the second operating tool locking claw (25) of the second operating tool receiving slot (21) opened in the outer overlapping portion (10b) face each other as shown in FIG. A pair of working claws (28) provided at the tip of the drawing / drawing operation tool (27) are inserted and locked, respectively.

Then, when the pair of open / close handles (29) of the operating tool (27) is strongly squeezed and tightened to pull both action claws (28) around the assembly fulcrum shaft (30), the clamp band The tightening diameter (D) of (10) is forcibly contracted and deformed.
As can be seen from FIG. 21, the leading pilot piece (12a) of the insert nose (12), which forms the free end of the inner overlapped portion (10a), is connected to the outer overlapped portion (10b).
Smoothly enters the nose receiving slot (22) of the nose, and is kept in an accurate overlap state in which the nose does not swing in the width direction.

Also, the inward connecting claw (24) located at the free end of the outer overlapped portion (10b) will soon be replaced with the one shown in FIG.
5 to 23, the first to fourth of the inner polymerized portion (10a)
The selected outward connecting claws (17a) to (17d) and the inward connecting claws (24) are shifted so as to relatively get over the outward connecting claws (17a) to (17d).
The clamp band (10) is engaged by biting on the overlapping plane, and the object (A) to be tightened is strongly tightened and fixed to the connection circumferential surface of the target device (B). Become.

In this regard, specific numerical values described as an example in the illustrated embodiment are as follows. The clamping diameter (D) of the clamp band (10) is about 108 mm, about 110 mm, and about 112 m.
m and about 114 mm in four steps of about 2 mm.
A total of four of the first to fourth outwardly connecting claws (17a) to (17d) which bite and lock alternatively to 4) are arranged and arranged at equal pitches (p) adjacent to each other. I have.

FIGS. 12 and 15 and FIGS.
Then, for the purpose of the thickest object to be tightened (A), the first outward connecting claws (17a) of the inner overlapping portion (10a) and the inward connecting of the outer overlapping portion (10b) in the clamp band (10). FIGS. 13 and 16 show a connected use state in which the claws (24) are engaged with each other.
20 to 23, the fourth outward connecting claws (17d) of the inner superposed portion (10a) and the inward connecting claws (24) of the outer superposed portion (10b) for the thinnest tightened object (A). ) Shows the connected use state in which the first and second inner overlapping portions (10a) are engaged with each other in accordance with the intended change in the thickness of the object to be tightened (A).
(4) By using the outward connecting claws (17a) to (17d) alternatively, the tightening diameter (D) of the clamp band (10) can be adjusted to be large or small, and in that sense, it is extremely excellent in versatility.

In this case, even if a plurality of outward connecting claws (17a) to (17d) are bent outward from the inner overlapped portion (10a), they are still tightened in the clamp band (10). At the time of the contraction deformation operation of D),
As suggested from FIGS. 20 to 23, the outer polymerized portion (1
0b), the second operating tool receiving slot (21) and the second operating tool engaging claw (25) are allowed to escape into the tunnel, and the insertion nose (12) of the inner overlapping portion (10a) is also formed. Also escapes into the nose receiving slot (22) of the outer superposed portion (10b),
The adjusting operation of the tightening diameter (D) can be smoothly performed, and the adjustment state of the large diameter (D) and the adjustment state of the small diameter (D) can be constantly and uniformly secured without variation.

The positional relationship between the second operating tool locking claw (25) in the tunnel form and the inward connecting claw (2) is located at the free end of the outer overlapped portion (10b).
4) is bent, while the intermediate non-polymerized portion (10)
Since the second operating tool receiving slot (21) through which the outward connecting claws (17a) to (17d) of the inner overlapping portion (10a) can escape is cut out on the side where c) exists, the second operating tool receiving slot (21) is cut out. In adjusting the tightening diameter (D) of the clamp band (10) by using one of the outward connecting claws (17a) to (17d), the first and second operating tool engaging claws (19) (19) ( Advantageously, the mutual spacing distance of 25) can be made as short as possible in advance, and the clamping operation of the clamp band (10) can be performed easily using the drawing-type operating tool (27) having a small opening and closing degree. There is also.

Further, if an elastic hump (26) serving as the above-mentioned expansion / contraction spring element is also provided on the outer overlapping portion (10b) of the clamp band (10), it is possible to cope with a change in the hardness of the material of the tightened object (A). Not only is it possible, but also the adjustment of the tightening diameter (D) can be achieved more smoothly as it is in a stepless manner, so it is particularly difficult to use second-hand and non-genuine products with large variations in thickness and thickness. It has a remarkable effect as a clamp used for the fastener (A).

[0074]

As described above, according to the present invention, the clamp band (10) made of the metal strip material (M) cut to a certain length (L) is cut off from the inside overlapped portion (10a) on one end side. And the outside polymerized part (10
b) is bent into a circular ring shape that partially overlaps with

By forcibly deforming the clamping diameter (D) of the clamp band (10), a fluid feeding hose made of a plastic such as rubber or synthetic resin, an air conditioning duct, a dustproof bellows, a shaft Boots, rust prevention covers,
In a clamp fitting for fastening other objects to be tightened (A) to the connection peripheral surface of various devices (B) to be tightened,

The free end of the inner superposed portion (10a) is cut off as an insertion nose (12) having a fixed width (w1) smaller than the fixed width (W) of the metal strip material (M).

In the inner overlapping portion (10a), from the insertion nose (12) to the side where the intermediate non-polymerizing portion (10c) exists in the clamp band (10), the selection receiving hole for the inward connecting claw (10) is sequentially formed. 14a) (14b)
(14c) A plurality of (14d) and the first operating tool receiving hole (15) are cut out and distributed in the opening, respectively.

The respective selective receiving holes (14a) to (14a)
The cutout opening edge on the side adjacent to the insertion nose (12) in d) is connected to the outward connecting claws (17a) (17).
b) The selective receiving hole (14a) as (17c) (17d) and in the first operating tool receiving hole (15).
The cutout opening edge on the side adjacent to (14d) is the first
As the operating tool locking claw (19), its outward connecting claw (1)
7a) to (17d) and the first operating tool locking claw (1
9) While being bent obliquely outward and permuting in the same posture state as in

The outwardly connecting portions (10b) are connected to the outward connecting claws (17a) to (17a) in order from the free end thereof to the side where the intermediate non-overlapping portion (10c) exists.
d) The alternative receiving hole (20), the second operating tool receiving slot (21) and the receiving slot (22) of the insertion nose (12) are cut out and distributed.

The alternative receiving hole (2) for the outward connecting claw
0), the cutout opening edge located on the free end side of the outer overlapped portion (10b) as the inward connecting claw (24) is used as the outward connecting claw (17a) to (17).
While bending inward and obliquely opposite to d),

The second operating tool member in the form of a tunnel extending at the boundary between the alternative receiving hole (20) and the second operating tool receiving elongated hole (21) by a predetermined mutual distance (d3). Bend the claw (25) outward,

To both the first operating tool retaining claw (19) of the first operating tool receiving hole (15) and the second operating tool retaining claw (25) of the second operating tool receiving elongated hole (21). Pull and draw the operating tool (27) inserted and locked,
The inward connecting claws (24) of the outer overlapping portion (10b) are connected to the outward connecting claws (17a) of the inner overlapping portion (10a).
(17d) By selectively biting and locking,
Since the clamping diameter (D) of the clamp band (10) is set so that it can be adjusted to be large or small, the problems of the prior art described at the beginning can be drastically solved, and the thickness, thickness, etc. are out of the standard. Even if a second-hand or non-genuine article to be fastened (A) has a large variation in the diameter, it can be securely and securely fastened and fixed to the connection circumferential surface of various equipment (B) that is intended for it. Remarkably excellent.

According to the above configuration of the present invention, the inward connecting claw (24) is provided at the free end side of the outer overlapped portion (10b).
The second operating tool locking claw (25) in the form of a tunnel having a certain length (d3) faces outward at the boundary between the second operating tool receiving slot (21) and the second operating tool receiving slot (21). While being bent and raised, the first operating tool engaging claw (25) is arranged in parallel with the second operating tool engaging claw (25) from a position of the inner overlapping portion (10a) that is most offset to the side where the intermediate non-overlapping portion (10c) exists. The operating tool pawl (19) is also bent outward.

As a result, in order to adjust the tightening diameter (D) of the clamp band (10) to a larger or smaller size, the engagement with the inward connecting claw (24) of the outer overlapped portion (10b) is selectively performed. A plurality of outward connecting claws (17a)
Even if (17d) is bent in a permuted state from the inner overlapped portion (10a), the tightening work of the clamp band (10) can be performed while using the drawing-type operating tool (27) having the smallest opening and closing degree. It can be done without difficulty.

In addition, when the tightening diameter (D) is contracted and deformed by the operating tool (27), the inner overlapping portion (1) is deformed.
0a) to outward connecting claws (17a) bent from
(17d) escapes into the inside of the second operating tool receiving slot (21) in the outer overlapping portion (10b) and the tunnel of the second operating tool locking claw (25), and the outer overlapping portion (10b) ) And the outward connecting claws (17a) to (17d) of the inner overlapping portion (10a) are selectively and securely engaged and engaged with each other. The effect of adjusting the tightening diameter (D) can also be achieved extremely smoothly.

In this regard, if the configuration of claim 2 is adopted, the outward connecting claws (17a) of the inner overlapped portion (10a) can be used.
(17d) and the inward connecting claws (24) of the outer overlapped portion (10b) are adjusted to any size with the tightening aperture (D) of the clamp band (10).
Always inner polymerized part (10a) and outer polymerized part (10b)
On the plane of superposition, it is possible to maintain a strong biting connection state, and there is no risk of dissociation despite receiving vibration or impact during use.

According to the third aspect of the present invention, the plurality of outward connecting claws (17a) to (17d) and the first operating tool locking claw (19) are obliquely outward from the inner overlapping portion (10a). Even if they are bent as a direction and in an overall permutation state, they can be clearly identified,
The operation tool (27) is incorrectly connected to the outward connection claw (17a)-
(17d) has an effect of being able to prevent being locked and used.

If the configuration of claim 4 is adopted, it is possible to easily and surely know the state of the adjustment of the tightening aperture (D) in the clamp band (10), and the mass production effect of the clamp is further improved. I do.

If the structure of claim 5 is adopted, the operating diameter of the clamp band (10) is tightened by locking the operating tool (27) to the second operating tool locking claw (25) in the form of a tunnel. During the operation of contracting and deforming (D), there is no fear that the outward connecting claws (17a) to (17d) of the inner overlapping portion (10a) may interfere with the operating tool (27), and the second operating tool engaging claw ( It is possible to escape into the tunnel of 25) and the inside of the second operating tool receiving slot (21), so that the adjusting operation of the tightening diameter (D) can be performed more smoothly.

Further, if the configuration of claim 6 is adopted,
Since the elastic hump (26) acts as a telescopic spring element extending in the circumferential direction of the clamp band (10) and has a stepless adjustment function of its tightening diameter (D), a used variation having a large variation in thickness and thickness is particularly large. It has a remarkable effect on its stable and strong tightening when applied to products and non-genuine products (A).

[Brief description of the drawings]

FIG. 1 is a plan view showing an expanded state (material processing state) of a clamp according to the present invention.

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

FIG. 3 is an enlarged plan view showing an extracted inner superposed portion of FIG. 1;

FIG. 4 is an enlarged sectional view taken along line 4-4 in FIG. 3;

FIG. 5 is an enlarged sectional view taken along line 5-5 in FIG.

FIG. 6 is an enlarged sectional view taken along line 6-6 of FIG.

FIG. 7 is an enlarged plan view showing an extracted outer superposed portion of FIG. 1;

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.

FIG. 10 is an enlarged sectional view taken along line 10-10 in FIG. 8;

FIG. 11 is a perspective view showing a product obtained by three-dimensionally winding and bending a clamp.

FIG. 12 is a perspective view showing a tightened state of a clamp fitting corresponding to the thickest object to be tightened.

FIG. 13 is a perspective view showing a tightened state of a clamp fitting corresponding to the thinnest object to be tightened.

FIG. 14 is a cross-sectional view showing a state in which a clamp is temporarily fixed to an object to be tightened and a tightening operation process.

FIG. 15 is a cross-sectional view corresponding to FIG. 12, showing a state in which the tightening operation of the clamp is completed.

FIG. 16 is a cross-sectional view corresponding to FIG. 13, showing a state in which the tightening operation of the clamp is completed.

FIG. 17 is a plan view showing an enlarged use state of FIG. 15;

FIG. 18 is a sectional view taken along line 18-18 of FIG. 17;

FIG. 19 is an enlarged sectional view showing a main part of FIG. 18;

20 is a cross-sectional view showing an enlarged use state of FIG. 16;

FIG. 21 is an enlarged sectional view showing a main part of FIG. 20;

FIG. 22 is an enlarged sectional view taken along line 22-22 in FIG. 21;

FIG. 23 is an enlarged sectional view taken along line 23-23 of FIG. 21;

[Explanation of symbols]

(10) ・ Clamp band (10a) ・ Inner overlapping part (10b) ・ Outer overlapping part (10c) ・ Intermediate non-overlapping part (12) ・ Insertion nose (14a) ・ First selection receiving hole for inward connecting claw (14b) ) · Second selection receiving hole for inward connecting pawl (14c) · Third selection receiving hole for inward connecting pawl (14d) · Fourth selection receiving hole for inward connecting pawl (15) · First operating tool receiving hole (17a) · First outward connecting claw (17b) · Second outward connecting claw (17c) · Third outward connecting claw (17d) · Fourth outward connecting claw (19) · First operating tool latch Claw (20) ・ Selective receiving hole for outward connecting claw (21) ・ Second operating tool receiving long hole (22) ・ Nose receiving long hole (24) ・ Inward connecting claw (25) ・ Second operating tool Stop claws (26), elastic humps (27), manipulation Tool (A), object to be tightened (B), equipment (M), metal strip material (D), tightening aperture (T), thickness of clamp band (W), width of clamp band (L), Length (p) · Pitch of the first to fourth selective receiving holes (d3) · Length of the second operating tool engaging claw (d4) · Distance between the nose receiving elongated hole and the second operating tool receiving elongated hole (H2) · Bending height of each outward connecting claw (h3) · Bending height of the first operating tool locking claw (h4) · Bending height of inward connecting claw (h5) · Bending height of the second operation tool locking claw (h6), bending height of the elastic hump (w1), width of pilot nose (x1), opening width of each selection receiving hole (x2), first Opening width of operating tool receiving hole (x3), opening width of alternative receiving hole (x4), receiving of second operating tool Opening width of slotted hole (x5), opening width of nose receiving slot (y1), opening length of each selective receiving hole (y2), opening length of first operating tool receiving hole (y3), alternative receiving Opening length of the hole (y4) · Opening length of the second operating tool receiving long hole (y5) · Opening length of the nose receiving long hole (α) · Inclination angle of each outward connecting claw (β) · First Inclination angle of operating tool locking claw (γ) / Inclination angle of inward connecting claw

Claims (6)

[Claims] 1. A clamp band (10) made of a metal strip material (M) cut to a predetermined length (L) is separated from an inner superposed portion (10a) at one end thereof and an outer superposed portion at the other end thereof. By winding and bending into a circular ring shape in which the portion (10b) partially overlaps, and forcibly deforming the clamping diameter (D) of the clamp band (10), rubber or synthetic resin is obtained. Connection of various equipment (B) to fluid supply hoses, air conditioning ducts, dust proof bellows, shaft boots, rust proof covers, and other objects to be tightened (A) made of plastics such as In a clamp fitting fastened to a circumferential surface, the free end of the inner overlapped portion (10a) is fixed at a fixed width (w1) smaller than a fixed width (W) of the metal strip material (M).
Cut-out as an insertion nose (12), and the inner overlapping portion (10a) is sequentially inwardly directed from the insertion nose (12) toward the side where the intermediate non-polymerizing portion (10c) in the clamp band (10) is present. Selection receiving holes (14a) (14b) (14c) for connecting claws
(14d) and the first operating tool receiving hole (15)
Are respectively distributed to the cutout openings, and the cutout opening edge of each of the selective receiving holes (14a) to (14d) adjacent to the insertion nose (12) is connected to the outward connecting claws (17a) (17b) (17).
c) as (17d) and the first operating tool receiving hole (1
5) The selection receiving holes (14a) to (14)
The cutout opening edge on the side adjacent to d) serves as a first operating tool locking claw (19), and its outward connecting claws (17a) to
While the plurality of (17d) and the first operating tool locking claw (19) are bent obliquely outward in the same posture state, the outer overlapped portion (10b) is separated from its free end by an intermediate non-contact. Towards the side where the overlapped portion (10c) is present, the alternative receiving hole (20) and the second operating tool receiving elongated hole (21) of the outward connection claws (17a) to (17d) and the insertion nose ( 12) Receiving slot (2)
2) are respectively distributed in the cutout openings, and the cutout opening edge located at the free end side of the outer overlapped portion (10b) in the alternative receiving hole (20) for the outward connection claw is connected to the inward connection claw (24). In addition to bending outwardly and obliquely to the opposite of the outward connecting claws (17a) to (17d), a boundary between the alternative receiving hole (20) and the second operating tool receiving elongated hole (21) is formed. , Its constant mutual spacing distance (d
3) The second operation tool locking claw (25) in the form of a tunnel extending by an amount is bent outward and raised, and the first operation tool locking claw (19) in the first operation tool receiving hole (15) is bent. The operating tool (27) inserted and locked into both the second operating tool receiving claw (25) of the second operating tool receiving slot (21) and the second operating tool receiving slot (21) is drawn and squeezed to form the outer overlapping portion (10b). Of the clamp band (10) by selectively biting and engaging the inward connecting claws (24) of the above with the outward connecting claws (17a) to (17d) of the inner overlapping portion (10a). A general-purpose clamp fitting having an adjustable tightening diameter, characterized in that D) is adjusted so that it can be used in large and small sizes. 2. A selection receiving hole (14a) for an inward connecting pawl.
The opening width (x1) and the opening length (y1) of (14d) are made approximately equal to those of the alternative receiving hole (20) for the outward connection claw, and each of the selective receiving holes (14a) to (14d). 14d) The bending height (h2) and the inclination angle (α) of the outward connecting claws (17a) to (17d) bent obliquely outward from the cutout opening edge are selected from the alternative receiving holes (20). The outward connecting claws (17a) to (17d) and the inward connecting claws (24) are set substantially equal to those of the inward connecting claws (24) bent obliquely inward from the cut-out opening edges of the inner connecting claws (24). 2. The clamp according to claim 1, wherein the clamps are installed in a symmetrical position facing each other. 3. An opening width (x2) of the first operating tool receiving hole (15) is selected from an inward connecting pawl selection receiving hole (14a).
(14d) The opening width (x1) of the first operating tool receiving hole (15) of the first operating tool locking claw (19) is bent obliquely outward from the cutout opening edge of the first operating tool receiving hole (15). Outward connecting claws (17a) to (17a) bent obliquely outward from the cutout opening edges of the selective receiving holes (14a) to (14d) by raising the bending height (h3).
By setting the height higher than the bending height (h2) of d), the first operation tool locking claw (19) and each outward connection claw (1) can be formed.
The universal clamp according to claim 1, wherein the clamp is adjustable so as to be distinguishable from 7a) to (17d). 4. An inner overlapping portion (1) which is selectively engaged with an inward connecting claw (24) of the outer overlapping portion (10b).
2. The universal clamp according to claim 1, wherein the outwardly connecting claws (17a) to (17d) of (a) are maintained at a plurality of substantially equal pitches (p). 5. A second operating tool engaging claw (25) of an outer overlapped portion (10b) having a bent and raised height (h5) of an outward connecting claw (17a) to (17a) to (b) of an inner overlapped portion (10a). 1
7d) almost inverted U which is higher than the bending height (h2)
The inside of the second operating tool locking claw (25) which is formed in a curved shape and forms a tunnel, and the second operating tool receiving slot (2) communicating with the inside thereof.
1), the outward connecting claws (17a) to (17a)
2. The universal clamp according to claim 1, wherein the clamp is adjustable so that some of d) can escape. 6. A telescopic spring extending in the circumferential direction of the clamp band (10) from between the second operating tool receiving slot (21) and the insertion nose receiving slot (22) in the outer overlapped portion (10b). Elastic hump as element (26)
2. The universal clamp according to claim 1, wherein the clamp is bent outward.