JP5918001B2 - Chimney connection device - Google Patents

Description

  The present invention relates to a connecting device for connecting or coupling together chimney components such as wood-burning stoves (hereinafter referred to as “units”).

Conventionally, means for connecting a chimney unit such as a wood stove to another unit has been proposed. 1-3 show a conventional example of two units A and B provided with a connecting device for connecting each other.
Each unit A, B forms a cavity between the inner tube 1 and the outer tube 2 made from a metal plate such as stainless steel, and the cavity is filled with heat insulating and flame retardant mineral fiber, powder 3 etc., This cavity is configured to be closed by a first connection ring 4 (see FIGS. 1 and 2) at the lower end of the unit A and a second connection ring 5 (see FIGS. 1 and 3) at the upper end of the unit B. In the state where the lower end of the unit A and the upper end of the unit B shown in FIG. 1 are in contact with each other, the first connection ring 4 of the unit A has a nested structure so as to be fitted to the second connection ring 5 of the unit B. Have. A reinforcing bead 7 is formed at the lower end of the outer periphery of the first connection ring 4, and a reinforcing bead 6 is formed at the lower end of the outer periphery of the second connection ring 5. These beads are connected to each other when both connection rings are connected. Contact and have a stopper action.
As shown in FIG. 2, a plurality of guide-and-connecting connection protrusions 8 having inclined surfaces 8 'inclined toward the lower right are cut at the inner peripheral surface of the first connection ring 4 at equal intervals along the circumference. As shown in FIG. 3, a plurality of guide-and-connecting connection protrusions 9 having an inclined surface 9 ′ inclined downward toward the upper right by cutting and raising the outer peripheral surface of the second connection ring 5 along the circumference. At regular intervals. When the first and second connection rings 4 and 5 are viewed from the outside, the inclined surfaces 8 'and 9' are inclined at the same angle and in the same direction (upper right direction in the figure) as shown in FIG. Note that they engage.
In order to connect the first connection ring 4 and the second connection ring 5 of the upper and lower units A and B to each other, after fitting the inner periphery of the first connection ring 4 to the outer periphery of the second connection ring 5, By rotating in the direction in which the right screw is tightened, the straight edges 8 ′ and 9 ′ of the protrusions 8 and 9 are slid to attract the first connection ring 4 and the second connection ring 5 in the direction of each other. At this time, the beads 6 and 7 collide to prevent leakage of smoke from both connection rings 4 and 5.

In the conventional example having the above-described configuration, as shown in FIGS. 2C and 3C, the guide and connecting projections 8 and 9 are formed by cutting and raising, so that the inclined surfaces 8 ′ and 9 ′ are cut. It exists as an edge, and rainwater may leak from the gaps G1 and G2.
Another problem of the conventional example is that the connection state between the units cannot be seen from the outside, so that it is impossible to accurately grasp whether or not the connection is completely made at the time of construction.
An object of the present invention is to solve these problems.

The present invention provides a chimney connection device having the following configuration.
1) A first connection ring (4) attached to the lower end of the upper unit A for connecting the upper unit A and the lower unit B constituting the chimney to each other, and a first connection ring (4) attached to the upper end of the lower unit B A connecting device comprising two connecting rings (5), wherein an inner peripheral surface of the first connecting ring (4) is nested in an outer peripheral surface of the second connecting ring (5);
A plurality of inward squeezing projections arranged at equal intervals in the circumferential direction on the inner surface of the peripheral wall of the first connection ring (4), the first projections whose upper surfaces are inclined with respect to the horizontal plane ( 8)
The outer surface of the peripheral wall of the second connection ring (5) has a plurality of outward squeezing projections arranged at equal intervals or multiples of the first projections (8) in the circumferential direction, the lower surface of the projections A second protrusion (9) inclined so as to come into contact with the upper surface of the first protrusion (8) at the same angle with respect to a horizontal plane ;
The second connection ring (5) has a horizontal annular portion (10), in which positioning holes (17) of the same number as the second protrusions (9) are formed, and the first connection ring ( 4) has a positioning pin (13) that is spring-shifted so as to fit into any of the plurality of positioning holes (17) of the second connection ring (5), and the positioning pin (13) The chimney connection device is a position corresponding to the case where the first and second protrusions (8, 9) are in the correct connection positions .
2) Oite the 1) number of second projections of said first connecting first protrusion ring (4) and (8) a second connecting ring (5) (9) of 6-12 at equal intervals A connecting device that is the same number in range.
3) Oite the 1), the number of first projections of the first connection ring (4) (8) and four to six, the number of second projections of the second connecting ring (5) (9) The A connection device that is twice the number of one protrusion (8).
4 ) The connection device according to any one of 1) to 3 ), wherein the positioning pin ( 13 ) includes means for generating a click sound when fitted into the positioning hole (17).
The first connection ring (4) has one spring-shifted positioning pin (13) so as to fit into any of the plurality of positioning holes (17) of the second connection ring (5). It can have.

In the present invention, the guide / connection projection does not have a cut-and-raised part, and is formed by drawing, so there is no air-permeable gap, and there is no possibility that rainwater enters even at the part where the chimney protrudes outdoors.
In addition, even if the connection or connection state between the units is not visible from the outside, if the spring-shifted positioning pin is fitted into one of the positioning holes, a click sound can be heard, and the connection between the chimney units can be made during construction. The advantage is that it can be determined to be complete.
By providing 6 to 12 or more positioning holes, the annular connecting ring can be accurately positioned and confirmed with rotation within 60 degrees.
45 degrees when the number of protrusions (8) of the first connection ring (4) is 4 to 6 and the number of protrusions (9) of the second connection ring (5) is twice the number of protrusions (8). The rotation of the ring connection ring can be reliably performed within the range of rotation, and the removal can be performed efficiently.

It is a block diagram of the conventional chimney connection apparatus. The 1st connection ring of the connection device of the conventional chimney is shown, (a) is the front view which fractured | ruptured a part, (b) is the bottom view, (c) is the sectional view on the AA line of (a). . The 2nd connection ring of the connection device of the conventional chimney is shown, (a) is the front view which fractured partially, (b) is the same top view, (c) is an AA line sectional view of (a). . It is a block diagram of the connection apparatus of the chimney of this invention. The 1st connection ring of the connection apparatus of the chimney of this invention is shown, (a) is the front view which fractured | ruptured one part, (b) is the bottom view, (c) is the sectional view on the AA line of (a). is there. The 2nd connection ring of the connecting device of a chimney of the present invention is shown, (a) is a front view which fractured partially, (b) is the same top view, (c) is an AA line sectional view of (a). is there. It is a front view of the setting position sensing and holding device for detecting and fixing an appropriate setting position of the position chimney connection device of the present invention. FIG. 8 is a cross-sectional view of the set position sensing / holding device shown in FIG. 7.

An embodiment of a connecting device for connecting a chimney unit A such as a wood stove of the present invention to another unit B will be described in detail with reference to FIGS. The parts or members corresponding to the reference numerals in FIGS. 1 to 3 are also denoted by the same reference numerals in the embodiments.
Each unit A, B forms a cavity between the inner tube 1 and the outer tube 2 made from a metal plate such as stainless steel, and the cavity is filled with heat insulating and flame retardant mineral fiber, powder 3 etc., This cavity is configured to be closed by a first connection ring 4 (see FIGS. 4 and 5) at the lower end of the unit A and a second connection ring 5 (see FIGS. 4 and 6) at the upper end of the unit B. As shown in FIG. 4, the first connection ring 4 of the unit A is nested with the second connection ring 5 of the unit B so that the lower end of the unit A and the upper end of the unit B are in contact with each other. It has the following structure. A reinforcing bead 7 is formed at the lower end of the outer periphery of the first connection ring 4, and a reinforcing bead 6 is formed at the lower end of the outer periphery of the second connection ring 5. These beads are connected to each other when both connection rings are connected. Collide.

As shown in FIG. 5, on the inner surface of the outer peripheral wall of the first connection ring 4, a plurality of guide / connection projections having an inclined surface 8 ′ inclined upward toward the lower right as viewed from the inner peripheral side by drawing. 8 are provided at equal intervals along the circumference. On the other hand, as shown in FIG. 6, on the outer surface of the outer peripheral wall of the second connection ring 5, a plurality of guide-and-connect connections having an inclined surface 9 'inclined downward toward the upper right when viewed from the outer peripheral side by drawing. The protrusions 9 are provided at equal intervals along the circumference. When the projections 8 and 9 are viewed from the outside of the connection rings 4 and 5 (the projection 8 cannot be seen from the outside), the inclined surfaces 8 ′ and 9 ′ are at the same angle and in the same direction (upper right direction in FIG. 4). Note that because they are inclined, the inclined surfaces 8 ', 9' form sliding surfaces that abut each other during the connection operation. Also, beads 6 and 7 are formed at the lower ends of the outer circumferences of both connecting rings 4 and 5, and when both connecting rings 4 and 5 are rotated to each other and fastened in place, smoke leaks from the chimney. prevent.
In the embodiment of FIG. 5, the number of the protrusions 9 of the second connection ring 5 is twelve, but the number of the protrusions 9 can be six, which is the same as that of the first connection ring 4. Good things will be discussed later.
In general, in consideration of reducing the rotation angle at the time of connection work, when the number of protrusions 8 of the first connection ring 4 and the number of protrusions 9 of the second connection ring 5 are the same, 6 to 12, When the multiple of the number of the projections 8 of the connection ring 4 is the number of the projections 9 of the second connection ring 5, it is preferable that the number of the projections 8 is 4 to 6, and the number of the projections 9 is a multiple thereof. In the former, the maximum rotation angle in the connection work is about 60 degrees, and in the latter, the maximum rotation angle is about 45 degrees. That is, if the number of the protrusions 9 is a multiple of the number of the protrusions 8, the rotation angle required for attachment is reduced without increasing the number of protrusions 8, the processing is facilitated, and the attachment work efficiency is increased.

To connect the first connection ring 4 and the second connection ring 5 of the upper and lower units A and B to each other, after fitting the inner periphery of the first connection ring 4 to the outer periphery of the second connection ring 5, By rotating in the direction in which the screw is tightened, the inclined surfaces 8 ′ and 9 ′ of the protrusions 8 and 9 are slid to attract the first connection ring 4 and the second connection ring 5 in the direction of each other. At this time, the beads 6 and 7 are formed at the lower ends of the outer circumferences of the connecting rings 4 and 5, and the beads 6 and 7 collide with each other when the connecting rings 4 and 5 are rotated to each other and fastened in place. To do.
According to this structure of the present invention, the conventional guide / connection projections 8 and 9 are formed by cutting and raising, and the gaps G1 and G2 (see FIGS. 2C to 3C) at the inclined surfaces 8 ′ and 9 ′. The problem of rainwater leaking is resolved.

  The number of the protrusions 8 of the first connection ring 4 and the number of the protrusions 9 of the second connection ring 5 are equal and the same number in the range of 6 to 12, or the number of the protrusions 8 of the first connection ring 4 is six, At the same time, it is preferable that the number of the protrusions 9 of the second connection ring 5 be 12 times that of the projections 9. In the former case, the connection of both connection rings is completed with a rotation of 60 to 30 degrees at the maximum, but in the latter case, the number of connections between both types of protrusions 8 and protrusions 9 is 6, but the connection of both connection rings However, since the relative rotation angle between the two can be the number of the protrusions 9, the rotation can be performed at a maximum of 30 degrees, which is advantageous in improving the workability of the installation work.

Next, referring to FIGS. 4 to 8 again, the first protrusion 8 and the second protrusion 9 for positioning, which is another feature of the present invention, will be described in detail.
As shown in FIG. 5, the first connection ring 4 is formed in a substantially inverted U shape, and a through hole 11 is formed in one place in the horizontal annular portion 10. As shown in FIG. 4, the upper unit A has a pin device 12 having a positioning pin 13 that is telescopically fitted into the through hole 11 of the first connection ring 4. Adhering means such as adhesive, tacking, and screwing Is supported by
As shown in the detail views of FIGS. 7 to 8, the pin device 12 includes a tip 13 ′ that extends downward through a through hole 11 formed in the horizontal annular portion 10 of the first connection ring 4 and a collar 13 that receives the action of a spring. The pin 13 has a "", a compression spring 14, a spring case 15, and a spring retainer 16. The collar 13 "is provided for obtaining a click sound.

  As shown in FIG. 6, the top of the second connection ring 5 is formed in a substantially inverted U shape, and the horizontal annular portion 10 has a through hole formed in the first connection ring 4 at equal intervals in the circumferential direction. A positioning hole 17 for receiving the tip 13 'of the positioning pin 13 that advances and retreats from the hole is formed. The number of positioning holes 17 is the same as the number of protrusions 9 formed in the second connection ring 5. In this embodiment, there are 12 pieces. The position where the positioning pin is fitted into the positioning hole is determined at a position corresponding to the case where the squeezing protrusions 8 and 9 are in the correct connection position.

[Action]
In the assembly, the first connection ring 4 is fixed to the lower side of the unit A, the second connection ring 5 is fixed to the upper side of the lower unit B, and then both are fitted, as shown in the center part of FIG. When the first connection ring 4 and the second connection ring 5 are rotated in the right-handed direction, the protrusion 8 of the first connection ring 4 and the protrusion 9 of the second connection ring 5 slide on the inclined surfaces 8 ′ and 9 ′. At the same time, the fixing force is increased by pulling each other, and the tip 13 ′ of the positioning pin 13 that is spring-shifted at the correct connection position is fitted into the positioning hole 17 while generating a clicking sound. Thus, although the connection state between the first connection ring 4 and the second connection ring 5 is not visible from the outside, the click sound can be heard if the spring-shifted positioning pin is fitted into any one of the positioning holes 17. The advantage that the connection between the chimney units can be reliably determined at the time of construction is obtained. The click sound can be improved by adjusting the shape and dimensions of the contact portion between the collar 13 "and the spring case 15.

A Unit B Unit 1 Inner tube 2 Outer tube 3 Insulating / flame retardant mineral fiber, powder, etc. 4 First connection ring 5 Second connection ring 6 Reinforced bead 7 Reinforced bead 8 Guide / connection projection 8 'Inclined surface 9 Guide Combined connection projection 9 'inclined surface 10 horizontal annular portion 11 through hole 12 positioning pin device 13 positioning pin 13' tip 13 "collar 14 compression spring 15 spring case 16 spring retainer 17 positioning hole

Claims (4)

A first connection ring (4) attached to the lower end of the upper unit A and a second connection attached to the upper end of the lower unit B for connecting the upper unit A and the lower unit B constituting the chimney to each other A connection device comprising a ring (5), wherein an inner peripheral surface of the first connection ring (4) is nested on an outer peripheral surface of the second connection ring (5);
A plurality of inward squeezing projections arranged at equal intervals in the circumferential direction on the inner surface of the peripheral wall of the first connection ring (4), the first projections whose upper surfaces are inclined with respect to the horizontal plane ( 8)
The outer surface of the peripheral wall of the second connection ring (5) has a plurality of outward squeezing projections arranged at equal intervals or multiples of the first projections (8) in the circumferential direction, the lower surface of the projections A second protrusion (9) inclined so as to come into contact with the upper surface of the first protrusion (8) at the same angle with respect to a horizontal plane ;
The second connection ring (5) has a horizontal annular portion (10), in which positioning holes (17) of the same number as the second protrusions (9) are formed, and the first connection ring ( 4) has a positioning pin (13) that is spring-shifted so as to fit into any of the plurality of positioning holes (17) of the second connection ring (5), and the positioning pin (13) The chimney connection device is a position corresponding to the case where the first and second protrusions (8, 9) are in the correct connection positions . To claim 1 number is equal at 6-12 range at equal intervals of the second protrusion (9) of the first connecting first protrusion ring (4) and (8) a second connecting ring (5) The connecting device as described. The number of the first protrusions (8) of the first connection ring (4) is 4 to 6, and the number of the second protrusions (9) of the second connection ring (5) is 2 which is the number of the first protrusions (8). The connection device according to claim 1, which is doubled. The connection device according to any one of claims 1 to 3 , wherein the positioning pin ( 13 ) has means for generating a click sound when fitted into the positioning hole (17).

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