JP3821071B2 - Chimney connection structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a chimney connection structure mainly composed of a double wall with an insulating material for guiding smoke from an indoor fireplace through the ceiling to the outside.
[0002]
[Prior art]
2. Description of the Related Art Conventional chimneys that are sequentially connected to guide indoor smoke to the outside include, for example, those described in Japanese Utility Model Publication No. 55-141736. As shown in FIG. 6, this has a projecting ring portion b at the upper end of the cylindrical body a, and a fitting recess c into which the projecting ring portion b of the lower cylindrical body a is fitted at the lower end. Locking protrusions d and e that engage with each other in the fitting recess c are protruded at several locations, the protruding ring portions b of the upper and lower cylinders and the fitting recess c are fitted, and then the cylinder is slightly turned to engage. The stop protrusions d and e are locked.
[0003]
[Problems to be solved by the invention]
However, it is difficult for the above-mentioned type of chimney to prevent water from entering the fitting part between the protruding ring part b and the fitting concave part c due to rain, etc., and the corrosion of the connecting part becomes a problem. Was not preferred.
[0004]
An object of the present invention is to provide a chimney connection structure that solves the above-mentioned subject matter, has a reliable connection effect, and does not corrode the connection portion even when exposed to rain for a long period of time. .
[0005]
[Means for Solving the Problems]
In order to effectively achieve the above object, the means adopted by the present invention are as follows.
[0006]
That is, the present invention relates to a chimney formed by fitting a fitting cylinder portion formed by an inner wall at the upper end of a cylindrical body made of a double wall with a heat insulating material interposed therein into a fitting portion formed by an inner wall at the lower end of another cylindrical body. In this connection structure, an appropriate number of protrusions are formed on the inner wall surface of the lower end of another cylindrical body, inserted into the inner wall of the lower end of the cylindrical body, with a key shape formed on the outer wall at the upper end of the cylindrical body. In this case, the protruding portion formed over the entire circumference of the outer wall of the cylindrical body at the lower position of the retaining groove on the outer wall of the upper end of the cylindrical body, and the lowest position of the outer surface of the outer wall of the lower end of the cylindrical body state of covering the coupling portion of the protrusion of the locking groove and the cylindrical body bottom end of the tubular body upper end in the outer wall of the cylindrical body bottom by abutting the突隆portion formed over the entire circumference of the tubular member outer wall In addition, the upper and lower ridges are covered with a groove with a cross-sectional groove type fastening ring and the upper and lower ridges are rotated by a lever. It is characterized in that fastened by fit with means.
[0007]
In carrying out the present invention, it is rare that only a predetermined number of straight cylinders are connected to form a chimney, and usually, after connecting an appropriate number of straight cylinders to guide the chimney from the room to the outside, Usually, it is connected to a cylinder bent at 90 °, and an appropriate number of straight cylinders are connected. Of course, the present invention can also be applied to a connection between a straight cylinder and a cylinder bent at 90 °.
[0008]
In carrying out the present invention, it is possible to cover the entire two ridges in contact with the upper and lower cylinders with a cross-sectional groove type, and to securely tighten the upper and lower cylinders without fear of water leakage. If possible, the shape and structure of the fastening ring can be arbitrarily selected, and even if it has means for fastening the cylinder as described below, or after being tightened by some means, it can be cut off at both ends. Of course, it may be fixed.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 5 taking as an example the case of connecting two cylinders. It goes without saying that the present invention can be implemented even when three or more cylinders are connected, or even when a bent cylinder and a straight cylinder are connected.
[0010]
As shown in FIGS. 1 to 4, the cylindrical body A used in the practice of the present invention consists of a double wall with a heat insulating material 1 interposed. At the upper end of the cylindrical body A, a fitting cylindrical portion 3 is formed by the inner surface of the inner wall 2. The outer wall 4 at the position of the fitting cylinder portion 3 at the upper end of the cylindrical body A is formed with a key shape and an appropriate number of concave retaining grooves 5 formed inside . Further, a protruding portion 6 is formed over the entire circumference of the outer wall 4 at a position below the retaining groove 5 at the upper end of the cylindrical body A. A fitting portion 7 is formed at the lower end of the cylindrical body A so that the fitting cylindrical portion 3 of the lower cylindrical body A is fitted by the inner wall 2. An appropriate number of protrusions 8 that can be inserted into the retaining groove 5 of the cylindrical body B are formed. Then, at the lowermost position of the outer wall 4 surface at the lower end of the cylinder A, the upper end of the lower cylinder A is located when the projection 8 is inserted into the retaining groove 5 of the lower cylinder A and rotated. A protruding portion 9 that contacts the protruding portion 6 is formed over the entire circumference.
[0011]
In the cylindrical body A shown in the figure, the type of heat insulating material 1 that can withstand 1000 ° heat is adopted, but the heat insulating material 1 having an appropriate service temperature can be selected depending on the application. In addition, in the cylinder A in the illustrated example, the heat insulating material 1 does not exist in the insertion portion in order to insert the tip of the lower cylinder A at the lower end portion, but it is described as being hollow. It is possible to fill this part with the heat insulating material 1.
[0012]
As shown in FIG. 5, the fastening ring 10 used in the practice of the present invention has a width that can cover the entire two ridges 6 and 9 in contact with the upper and lower cylinders A, as will be described later. The depth of the cross-sectional groove shape is substantially circular, with both ends facing each other at an appropriate interval, and is formed slightly longer than the outer periphery of the two ridges 6 and 9 of the cylindrical body A. One end of the tightening ring 10 is attached to one end of a tightening lever 12 having a ring 11 rotatably attached in the middle thereof. Further, a fixing plate 14 for fixing the tightening lever 12 with the flange 13 is attached to the rotation limit position of the tightening lever 12. A hook 15 for hooking the ring 11 is fixed to the other end of the tightening ring 10.
[0013]
Next, the connection of the cylinder A described above is performed by fitting the fitting portion 7 formed by the inner wall 2 at the lower end of the upper cylinder A into the fitting cylinder portion 3 formed by the inner wall 2 at the upper end of the lower cylinder A. Match. At that time, an appropriate number of protrusions 8 formed on the outer wall 4 surface of the lower end of the upper cylinder A are inserted into the key-shaped hooking grooves 5 formed on the outer wall 4 at the upper end of the lower cylinder A and rotated. The upper cylinder A and the lower cylinder A are temporarily connected by hooking. At this time, the protrusion 6 formed over the entire circumference of the outer wall 4 of the cylinder A at the lower position of the retaining groove 5 of the upper wall 4 of the lower cylinder A and the outermost surface of the outer wall 4 at the lower end of the upper cylinder A. A protruding portion 9 formed over the entire circumference of the outer wall 4 of the cylindrical body A comes into contact with a lower position.
[0014]
Next, the tightening ring 10 is wound around the projecting portion 6 of the lower cylindrical body A and the projecting portion 9 of the upper cylindrical body A which are in contact with each other in the groove portion. The operation of winding the tightening ring 10 is easy because the entire length of the tightening ring 10 is slightly longer than the outer periphery of the two protruding portions 6 and 9 of the cylindrical body A as described above. Subsequently, when the ring 11 is hooked on the hook 15 and the tightening lever 12 is rotated 180 °, both ends of the tightening ring 10 are slightly overlapped to tighten the upper and lower cylinders A, and the upper and lower cylinders A are Close contact with the outer periphery. Finally, the end of the tightening lever 12 and the fixing plate 14 are fixed by the flange 13 to complete the connection operation.
[0015]
【The invention's effect】
As is apparent from the above description, according to the present invention, not only can the upper and lower cylinders be connected reliably and easily, but the fastening ring covers the entire two ridges and Since this is tightly attached to the cylinder and tightened, the connection portion will not be corroded even if exposed to rain or the like for a long time.
[Brief description of the drawings]
1 is a front view of a cylindrical body used in the practice of the present invention. FIG. 2 is a plan view of the cylindrical body of FIG. 1. FIG. 3 is a bottom view of the cylindrical body of FIG. FIG. 5 is a cross-sectional view in which a part is omitted. FIG. 5 shows a fastening ring used for connecting cylindrical connections, where a is a plan view of the connecting portion, b is a side view of the connecting portion, and c is b. A-A cross-sectional view taken along line A-A, d is a side view before connection [FIG. 6] A front view of a conventional chimney [Explanation of symbols]
A cylindrical body 1 heat insulating material 2 inner wall 3 fitting cylinder portion 4 outer wall 5 retaining groove 6 protruding portion 7 fitting portion 8 protruding portion 9 protruding portion 10 tightening ring 11 ring 12 tightening lever 13 １５ 14 fixing plate 15 hook

Claims (1)

In the connection structure of a chimney formed by fitting a fitting cylinder part formed by an inner wall at the upper end of a cylindrical body composed of a double wall with a heat insulating material interposed, into a fitting part formed by an inner wall at the lower end of another cylindrical body, An appropriate number of locks formed on the outer wall of the upper end of the body, and an appropriate number of protrusions projecting on the inner wall of the lower end of the other cylinder are inserted into the recessed recess groove on the inside, and rotated to be hooked. In this case, a protruding portion formed over the entire circumference of the outer wall of the cylinder at the lower position of the retaining groove of the outer wall of the upper end of the cylinder, and the outer wall of the outer wall of the outer wall of the lower end of the other cylinder on which a state in which coupling portion covering the the突隆portion and the projections of the outer wall in the cylindrical body above end hooking groove and the cylindrical body bottom end of the cylindrical body bottom by abutting the formed over the entire circumference, cross section groove The fastening means is configured to cover the entire two ridges where the upper and lower cylinders abut with the clamping ring of the mold and rotate the upper and lower ridges with a lever. Connecting structure chimney, characterized in that the fastening Te.

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