JPH1047740A - Clamping band and duct connection structure by clamping band - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a stopper part from being separated and improve a mounting work of a clamping band by forming a frame on the other end of the band for forming a stopper hook from longitudinal to upper positions forming an annular shape, and movably inserting a stopper part of an engagement arm into the frame to couple the frame and line slipper part. SOLUTION: A base part 4 of a clamping arm 3 is rotatably supported on 4 one end 2 of a band 1 substantially parallely to an annular face formed by the band 1, and a base part 6 of an engagement arm 5 is supported on a tip end side from the base 4 of the clamping arm 3 rotatably in the same direction. In contrast, a plurality of stopper hooks 8 arranged peripherally of the band are formed on the other end 7 of the bands 1. A frame 12 for covering in an annular shape each stopper hook 8 from an upper portion across the hook is formed on the end part 7 side of the band, and a pin 11 of a stopper part 9 of the engagement arm 5 is movably inserted into the frame 12, and further the frame 12 and the stopper part 9 are coupled. Hereby, the stopper part 9 is prevented from being separated and hence workability of the clamping band is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fastening band used for connection of a duct forming an air flow path of an air conditioner or the like, connection of a fluid pipe or bundling of a rod, and the like. The present invention relates to a connection structure of a duct connected by using the same.

[0002]

2. Description of the Related Art Conventionally, in an air conditioner, a duct has been widely and generally used for introducing air into the device or discharging air from the device. For example, as shown in FIG. It is connected to the flange F of T to form an air flow path. In addition, not only when the duct D is directly connected to the flange F as described above,
In some cases, the ducts are connected to each other, and in this case, the connection is performed through a nipple. And
In connecting these ducts, a tightening band B 'is used to fit the ducts to a flange or a nipple, connect them, and then tightly tighten and fix the joints.

For example, as shown in FIG. 11, a base 4 'of a tightening arm 3' is pivotally connected to one end 2 'of a band body 1' so as to be rotatable. The base 6 'of the engaging arm 5' is pivotally connected to the tip of the tightening arm 3 'so as to be rotatable, and the other end 7' of the band 1 '.
Has a configuration in which a plurality of locking hooks 8 'are formed in the circumferential direction. Then, a U-shaped (including U-shaped) engaging portion 9 'formed at the tip of the engaging arm 5' is engaged with the engaging hook 8 '.
Of the band body 1 ', and the other end 7' side of the band body 1 'is pulled and fastened.

[0004]

However, in the above-described tightening band, the strength of tightening and the length of the band after tightening can be adjusted by a plurality of locking hooks formed side by side in the circumferential direction. Although this has an advantage, when the fastening band is attached to the duct, the locking hook and the locking portion are detached from each other, and the band body does not form an annular shape. I have.

[0005] The present invention addresses the actual situation as described above, and forms a frame around the locking hook to prevent the locking portion from coming off and to improve the workability of attaching the tightening band. It is intended for.

[0006]

That is, a tightening band according to the present invention which meets the above-mentioned object has a predetermined length which surrounds the tightening portion and locks the tightening portion by locking the ends together. It has a band body, and the base of the tightening arm is rotatably pivotally attached to one end of the band body, and the base of the engaging arm is rotatably mounted on the tip side of the base of the tightening arm. While pivoting,
A plurality of locking hooks arranged in the circumferential direction are erected at the other end of the band body, and an annular locking portion formed at the tip of the engaging arm is locked with the locking hook, and In the tightening band which pulls the other end of the band body by the rotation of the attaching arm and tightens, the frame is formed at the other end of the band body so as to cover the locking hook from above and behind and form an annular shape. ,
The locking portion of the engaging arm is movably engaged with the frame, and the frame and the locking portion are connected to each other.

Another fastening band of the present invention is:
A band body having a predetermined length surrounding the tightening portion and fixing the tightening portion by locking the ends to each other, and a base of the tightening arm pivotally pivotally attached to one end of the band body; A plurality of locking hooks arranged in the longitudinal direction of the tightening arm are erected on the tip side of the base of the tightening arm, while the engaging arm is provided at the other end of the band body. The base is rotatably pivoted, and an annular locking portion formed at the distal end of the engaging arm is locked to the locking hook, and the other end of the band body is rotated by the rotation of the fastening arm. A fastening band which draws a portion of the fastening arm, wherein the locking hook extends upwardly from the front and rear to form a frame that covers the ring in a ring shape, and the locking arm holds the locking arm in the frame. The frame is movably engaged to connect the frame and the locking portion.

On the other hand, when the above-mentioned tightening band is tightened, the ends of the band move in a direction in which the ends abut each other. However, since the duct is usually made of a flexible material, the end of the abutting band is usually used. Wrinkles may be trapped between them. In such a case, in each of the tightening bands of the present invention, a band extension having a length that overlaps with the end of the other band body in a state where the tightening band is loosened is provided at one end of the band body. Preferably, it is formed.

Still further, a band extension having a length that overlaps with the other end in a state where the fastening band is tightened is formed at one end of each of the band bodies, and a tip of the band extension is formed. The portion is formed so as to bend or bend in the opposite direction to the overlapping side, thereby preventing the duct from being pinched and preventing the band extension from being caught by the end of the band body facing the band extension. Is possible.

Further, the present invention has another feature in that a duct is connected to a flange or between ducts by using the above-described tightening bands, and a duct joint such as an air outlet chamber flange or a nipple of an air conditioner is provided. At a connection portion between the main body and the duct, one end of the duct is externally fitted to the duct joint main body, and the outer periphery thereof is tightened and fixed by using the tightening band according to any one of claims 1 to 4. I'm sorry. In particular, when the duct joint body has a rib on the outer circumference, it is effective to tighten and fix the end of the duct fitted outside beyond the rib by the tightening band.

[0011]

In the tightening band of the present invention, the tightening strength and length of the band can be adjusted by appropriately selecting the plurality of locking hooks, and the annular locking portion at one end of the band can be adjusted. Since the other end of the band body is connected to the frame of the locking hook, the tightening band forms an annular shape even in a loosened state, thereby greatly improving the workability of attaching the tightening band to the duct. Becomes possible.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
An embodiment of the present invention will be described.

FIG. 1 is a front view showing a tightening band for duct connection according to an embodiment of the present invention, and FIG. 2 is a perspective view showing a main part of the tightening band.

The tightening band B of the above embodiment is for fixing a tubular duct covered by, for example, a tubular nipple (not shown) by tightening the duct from the outside thereof. And a band body 1 of a predetermined length for fixing the fastening portion.

A base 4 of a tightening arm 3 is pivotally connected to one end 2 of the band body 1 so as to be rotatable substantially in parallel with an annular surface formed by the band body 1. The base 6 of the engaging arm 5 is pivotally mounted on the tip side of the base 4 so as to be rotatable in the same direction. A through hole 10 is formed at the tip of the tightening arm 3. When the tightening arm 3 is tilted toward the end 2 of the band body, elasticity is imparted to the end. The fastening arm 3 can be locked in this state by engaging the fixed stopper claw 14 with the through hole 10. An annular locking portion 9 is formed at the tip of the engagement arm 5 by attaching a pin 11 thereto.

On the other hand, a plurality of locking hooks 8 are formed in the other end portion 7 of the band body 1 in the circumferential direction as shown in the figure, and the locking portions 9 of the engaging arm 5 are connected to the locking hooks 8. It is designed to be hooked on. The rotation of the tightening arm 5 toward the band end 2 draws the end 7 of the band 1 to tighten the duct and the like.

In the embodiment of the present invention, the tightening band B
As shown in the figure, a frame 12 is formed on the end 7 side of the band so as to cover the locking hook 8 from above and behind and form an annular shape, and the engaging arm 5 is provided in the frame 12. Movably insert the pin 11 of the locking portion 9 of
The frame 12 and the locking portion 9 are connected.

Next, a tightening band according to a second embodiment of the present invention will be described with reference to FIG. In the tightening band B of the second embodiment, the base 4 of the tightening arm 3 is pivotally attached to one end 2 of the band body 1 so as to be rotatable substantially in parallel with an annular surface formed by the band body 1. A plurality of locking hooks 8 arranged in the longitudinal direction of the tightening arm 3 are provided upright from the base 4 of the tightening arm 3.

The locking hooks 8 are formed on the left and right side walls 3a (one not shown) of the fastening arm 3 formed in a U-shaped cross section.
Is formed. In addition, a through hole 10 is formed in one side wall 3a of the fastening arm 3, and FIG.
As shown in (B), when the tightening arm 3 is tilted toward the end 2 of the band body, a stopper claw 14 having elasticity fixed to the end 2 and the through hole 10 are provided. Is engaged, so that the fastening arm 3 can be locked in this state. 14a, which is provided in parallel with the stopper claw 14, is a spacer plate for stabilizing the locked state.

On the other hand, a base 6 of an engaging arm 5 is pivotally attached to the other end 7 of the band body 1 so as to rotate in the same direction as the tightening arm 3 as shown in FIG. An annular locking portion 9 is formed by attaching a pin 11 to the distal end of the arm 5 for engagement. The engaging portion 9 of the engaging arm 5 is engaged with the engaging hook 8 of the tightening arm 3 so as to be hooked, and the tightening arm 5 is rotated toward the band body end 2. Thereby, the end 7 of the band body 1 is drawn to tighten the duct and the like.

In this embodiment, in the fastening band B, as shown in FIG. 3, the frame 8 covers the locking hook 8 from above and below (in the figure, downward) from the front and rear thereof. 12 is formed on the end 7 side of the band, and the pin 11 of the locking portion 9 of the engaging arm 5 is movably inserted into the frame 12 so that these frame 12
And the locking portion 9. In this embodiment, it is possible to reduce the number of parts and the number of assembling steps to reduce the manufacturing cost as compared with the previous example.

In the two embodiments described above, the other end of the band 1 is attached to one end 2 of the band 1 with the tightening band B fully loosened as shown in FIG. 7, a band extension 1 having a length that overlaps inside
3 are integrally formed. Conversely, the band extension 13 can be integrally or separately extended from the other end 7 of the band body 1.

Further, as another embodiment, a band body 1
For example, as shown in FIG. 6 (A), a band extension 15 having a length that overlaps with the other end 7 of the band body 1 in a state where the above-mentioned tightening bands B are tightened as shown in FIG. While forming, the tip 15a of the band extension 15
It is also possible to bend in the direction opposite to the side to be superimposed as shown in FIG. 7A, or to bend as shown in FIG.

The reason why these band extensions 13 and 15 are formed is that when the tightening band B is tightened as described above, the ends 2 and 7 of the band body 1 move in the direction in which they abut each other. The end portion 2 of this abutting band body 1,
This is because it is likely to be wrinkled when sandwiched between the seven. In such a case, the band extension portions 13 and 15 are extended from one end of the band body 1 as described above, and the band extension portions 13 and 15 can be guarded to prevent pinching of the duct.

Since the above-mentioned band extension 13 overlaps the other end 7 of the band body 1 even when the tightening band is fully loosened, it is not necessary to form the band extension 1 into a special shape.
In the case of a short length such as the band extension 15 described later, it is desirable to prevent the end 7 of the band body 1 from being caught at the time of tightening, so that the tip is curved or bent as described above. .

In the fastening band B of each embodiment of the present invention, the fastening strength and length of the band body 1 can be adjusted by appropriately selecting one of the plurality of hooks 8. Since the annular locking portion 9 of the band body one end 2 and the frame 12 of the locking hook 8 at the band body other end 7 are connected, the tightening band B forms a ring even in a loosened state. This makes it possible to greatly improve the workability of attaching the fastening band B to the duct.

FIGS. 7 and 8 show an example in which the tightening band B composed of the above-mentioned band body is used to connect the duct D to the flange F protruding from the outlet chamber T of the air conditioner. Although the rib L is provided on the flange F, the rib is not necessarily required. In this case, the small-diameter end of the duct D is fitted around the outer periphery of the flange F having the rib L, and the fastening band B according to the present invention is used for the portion to secure the fastening.

FIG. 9 shows the tightening band B of the present invention.
Are used to connect the ducts D to each other, and the small-diameter ends of the ducts D are fitted to the nipples N via nipples N having ribs L, respectively. B is attached, and the fastening is fixed. In this case, the nipple N has ribs L formed near the center and both ends in the longitudinal direction, and tightened and fixed by the tightening band B at a flat portion between the ribs. It is effective.

In the above description, the case where the tightening band of the present invention is mainly used for connection of a duct has been described. However, the tightening band of the present invention is not limited to the connection of the duct, and the same tubular shape is used. It can also be used for body connection, and also for general rod-shaped binding.

[0030]

As described above, each attached band of the present invention is configured such that an annular engaging portion formed at one end of the band body is hooked on one of the engaging hooks formed at the other end of the band body. In the tightening band, a frame body is formed in the band body so as to cover the locking hook from above and behind and form an annular shape, and the locking portion is movably engaged in the frame body to form a frame. The body and the locking portion are connected to each other, and the tightening strength and length of the band body can be adjusted by appropriately selecting a plurality of locking hooks, and the annular locking portion at one end of the band body can be adjusted. By connecting the frame of the hook at the other end of the band body, the tightening band forms an annular shape even when it is loosened,
This has a remarkable effect of greatly improving the workability of attaching the tightening band to the duct or the like as compared with the related art.

Further, by forming a band extension at the end of the band body, particularly, it is possible to prevent the duct from being pinched by the ends of the band body, and to efficiently perform the work of attaching the tightening band, and It is possible to prevent wrinkles.

[Brief description of the drawings]

FIG. 1 is a front view showing a tightening band for duct connection according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a main part of the tightening band.

FIG. 3 is a front view showing a tightening band according to a second embodiment of the present invention.

FIG. 4A is a cross-sectional view showing a tightening arm and a stopper claw of the tightening band. (B) It is sectional drawing which shows engagement of the arm for fastening and a stopper nail | claw.

FIG. 5 is an enlarged view of a main part showing a state where the tightening band is fully loosened.

FIG. 6A is an enlarged view of a main part showing a tightened state of a tightening band according to another embodiment of the present invention. (B) It is a principal part enlarged view which shows the state which tightened the tightening band of further another embodiment of this invention.

FIG. 7 is a perspective view showing a case where a duct is connected to an outlet flange of an air outlet chamber using the tightening band of the present invention.

FIG. 8 is a schematic cross-sectional view of a connecting portion in FIG.

FIG. 9 is a schematic cross-sectional view of a connecting portion in a case where the tightening band is used for connecting ducts.

FIG. 10 is an exploded perspective view showing an example of attachment of a tightening band.

FIG. 11 is a front view showing a conventional tightening band.

[Explanation of symbols]

 Reference Signs List 1 band body 2 one end of band body 3 fastening arm 3a side wall of fastening arm 4 base of fastening arm 5 engagement arm 6 base of engagement arm 7 other end of band body 8 Locking hook 9 Locking portion 10 Through hole 11 Pin 12 Frame 13 Band extension 14 Stopper claw 14a Spacer plate 15 Band extension 15a Tip of band extension

Claims (6)

[Claims] 1. A band having a predetermined length surrounding a fastening portion and fixing the fastening portion by locking the ends together, and a base of a fastening arm is provided at one end of the band. A plurality of pivotally rotatably pivotally pivotally attach the base of the engaging arm to the distal end side from the base of the tightening arm, while circumferentially lining the other end of the band body. An engaging hook is erected, an annular engaging portion formed at the tip of the engaging arm is engaged with the engaging hook, and the other end of the band body is rotated by the rotation of the fastening arm. In the tightening band for pulling and tightening, a frame body is formed at the other end of the band body so that the locking hook extends upward from the front and rear and forms an annular shape, and the locking portion of the engaging arm is provided in the frame body. A fastening band which is movably engaged to connect the frame and the locking portion. 2. A band having a predetermined length surrounding the fastening portion and fixing the fastening portion by locking the ends together, and a base of a fastening arm is provided at one end of the band body. A plurality of locking hooks, which are rotatably connected to each other and arranged in the longitudinal direction of the tightening arm at the distal end side from the base of the tightening arm, are erected, while the other end of the band body is provided. The base of the engaging arm is rotatably pivotally connected to the engaging arm, and an annular locking portion formed at the distal end of the engaging arm is locked to the locking hook. A tightening band for pulling the other end of the band body and tightening the frame, wherein the frame is formed on the tightening arm by covering the locking hook from above and below and forming an annular shape. A fastening band, wherein the locking portion of the joint arm is movably engaged to connect the frame and the locking portion. 3. The band according to claim 1, wherein one end of the band body has a band extension having a length that overlaps with the other end in a state where the band is loosened. . 4. One end of the band body is provided with a band extension having a length that overlaps with the other end in a state in which a tightening band is tightened, and the tip of the band extension overlaps with the band. 3. The tightening band according to claim 1, wherein the tightening band is formed to bend or bend in a direction opposite to the side. 5. A connection portion between a duct joint body such as an air outlet chamber flange and a nipple of an air conditioner and a duct, one end of the duct is externally fitted to the duct joint body, and an outer periphery thereof is the outer periphery. A duct connection structure, wherein the duct connection structure is tightened and fixed by using the tightening band described in any one of Items 4 to 4. 6. The duct joint body has a rib on an outer periphery, and a duct end fitted outside beyond the rib.
6. The duct connection structure according to claim 5, wherein the duct connection structure is tightened and fixed by the tightening band described in any one of the above items 4.