JPH11325608A - Combustion device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To permit a device for connecting an internal wire to an external wire to serve as a handle, and make a structure compact and simple. SOLUTION: A box 15, consisting of a base 20 and a cover 30, is fixed to a sidewall 1y of an exterior case 1. The box 15 is protruded outwardly from the sidewall 1y to serve as a handle. Specifically, the lower end portion of the box 15 serves as a finger hold. The base 20 is provided with a tab terminal 50, through which an internal wire is connected to an external wire. A boss 33 is formed on the cover 30. By fitting the boss 33 into a hole 24 of the base 20 and screwing a screw 45 into the sidewall 1y through the boss 33, the cover 30 is directly fixed to the sidewall 1y and thus the base 20 is also fixed to the sidewall 1y.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion apparatus in which electric wiring work is simple.

[0002]

2. Description of the Related Art As disclosed in Japanese Utility Model Registration No. 2501839, it is known to mount a connecting device on a side wall of an outer case of a combustion device. Since the inside and outside wires of the outer case are connected via the terminals of this connection device, the connection work can be performed without opening the cover of the outer case, and the electric wiring work on site is greatly simplified. be able to.

The connection device disclosed in the above publication will be described in detail. The connection device is provided on a side wall of the outer case, and includes a base and a cover that covers the base. More specifically, a hole is formed in the side wall. The base has a protruding part that protrudes inward of the outer case from this hole,
A tab terminal is attached to the protrusion. The base is fixed to the side wall by screwing the edge of the base to the edge of the hole. The cover is fixed to the side wall so as to close the hole in the side wall. An internal electric wire is already connected to the tab terminal. At the installation site, remove the cover of the connection device, connect the external wires to the tab terminals, and attach the cover again.

[0004] In the combustion apparatus of the above publication, the cover is substantially flush with the side wall, and the upper portion is concave. By using this recess as a handle, a device has been devised to make it easy to carry without requiring a handle of another part.

[0005]

However, in the above-described combustion apparatus, the recess of the cover used as a handle becomes a protruding portion into the internal space of the outer case, so that the storage space of the internal space is reduced. . In addition, in the base, the place where the tab terminal is to be attached must be arranged so as to avoid the depression of the cover, and there is a drawback that the connection device becomes large.

[0006]

According to the first aspect of the present invention, the apparatus main body is housed in an outer case, a connecting device is mounted on a side wall of the outer case, and the inside and the outside of the outer case are connected via terminals of the connecting device. In the combustion device for connecting electric wires, the connection device includes a base fixed to an outer surface of a side wall of the outer case, the terminal provided on the base, and a cover attached to the base and covering the terminal. Wherein the base and the cover constitute one box protruding outward from the side wall of the outer case, and the box is provided as a handle. According to a second aspect of the present invention, in the combustion device according to the first aspect, the base and the cover are fixed to a side wall of the outer case with a common fixing member. According to a third aspect of the present invention, in the combustion device according to the first aspect, the cover has a boss portion, the boss portion enters a hole formed in the base, and is fixed to a side wall of the outer case by a fixing member. It is characterized by being directly fixed. According to a fourth aspect of the present invention, in the combustion apparatus according to the third aspect, the boss portion protrudes radially from a peripheral edge of a hole of the base and abuts on the base, and a tip portion fitted into the hole. And a screw as a fixing member penetrating the boss portion is screwed into a screw hole formed in a side wall of the outer case.

According to a fifth aspect of the present invention, in the combustion apparatus according to any one of the second to fourth aspects, the box has a rectangular parallelepiped shape, and the cover has side walls of the outer case at both lower corners thereof. It is characterized by being fixed to. According to a sixth aspect of the present invention, in the combustion device according to any one of the first to fifth aspects, the base is provided with a convex portion projecting inward of the outer case, and the convex portion is formed of the outer case. It is characterized by being fitted into a hole formed in the side wall of the case. According to a seventh aspect of the present invention, in the combustion device according to any one of the first to sixth aspects, the cover includes a horizontal lower wall portion, and a projection formed at an edge of the lower wall portion and projecting downward. It is characterized by having. According to an eighth aspect of the present invention, in the combustion apparatus according to any one of the first to seventh aspects, a handle is provided on the side wall opposite to the side wall on which the connection device is mounted, and a finger hooking position of the handle is provided. To
The height is equal to the lower end of the box.

According to a ninth aspect of the present invention, in the combustion device according to any one of the first to eighth aspects, an eave portion is formed on the base above a mounting portion of the terminal. I do. According to a tenth aspect of the present invention, in the combustion device according to the ninth aspect, the cover is provided with another eave portion located above the eave portion of the base. An invention according to claim 11 is the combustion apparatus according to any one of claims 1 to 10. The base has a main wall in contact with a side wall of the exterior case, and a peripheral wall formed on a peripheral edge of the main wall, and the cover has a main wall facing the main wall of the base, and a peripheral wall on the peripheral edge of the main wall. The base has a peripheral wall formed thereon, and the distal edges of the peripheral wall of the base and the cover are in contact with each other, and at least on the upper side, the distal edges of the peripheral walls are fitted with each other in an uneven manner. According to a twelfth aspect of the present invention, in the combustion device according to any one of the first to eleventh aspects, the base and the cover are made of a resin molded product that is integral with each other. The hinge extends along both upper edges.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, an outdoor-installed gas water heater (combustion device) includes an outer case 1. The exterior case 1 has a rectangular parallelepiped case body 1a with an open front, and a cover 1b for closing the opening of the case body 1a. The apparatus main body 2 is accommodated in the outer case 1. This device body 2
A fan 3, a combustion unit 4, a heat exchanger 5, and an exhaust cover 6 are provided in this order from the bottom. The exhaust top 7 provided at the front end of the exhaust cover 6 is a cover 1b of the outer case 1.
It is fitted in the hole.

In the combustion unit 4, the gas sent from a gas pipe (not shown) is burned, and the combustion exhaust gas is discharged to the outside via a heat exchanger 5, an exhaust cover 6, and an exhaust top 7. A water tube passes through the heat exchanger 5,
Water flowing through the water pipe receives the heat of the combustion exhaust gas to become hot water. The apparatus main body 2 is housed in the outer case 1 offset to the right in FIG. 1, and the water pipe, the gas pipe, and the control unit 8 are housed in the space on the left side of the outer case 1.

A handle 9 is attached to the right side wall 1x of the outer case 1 in FIG. This handle 9
Is concave toward the inside of the outer case 1, and this concave portion is fitted into a hole in the side wall 1x. The upper wall of the recess is a finger hook 9a.

On the left side wall 1y of the outer case 1,
A connection device 10 for connecting electric wires described later is mounted. This connection device 10 has one rectangular box 15. The box 15 protrudes from the outer surface of the side wall 1y, and also functions as a handle as described later. That is, the lower end of the box 15 is
5a. The finger hook 15a of the box 15 and the finger hook 9a of the handle 9 are located at the same height H.

Hereinafter, the connection device 10 will be described in detail. As shown in FIGS. 2 to 5, the box 15 is formed of a resin molded product having a base 20 and a cover 30 integrated with each other.
It is linked by. The base 20 and the cover 30 have a shape obtained by dividing the box 15 in half, and have a quadrangular shape having the same shape as shown in FIG. FIG. 4 (B)
As shown in (2), in a state where the cover 30 is closed so as to close the base 20, an internal space 17 is formed between the two.

The base 20 and the cover 30 are each formed of a substantially flat rectangular main wall 21, 31.
31 have peripheral walls 22 and 32 formed on four sides. Along the four leading edges of the peripheral wall 22 of the base 20,
A narrow protrusion 22a located on the inner side in the thickness direction is formed. On the other hand, the concave portion 32 located on the inner side in the thickness direction along the top edge and the left and right end edges of the peripheral wall 32 of the cover 30
a is formed. As shown in FIG. 4B, when the cover 30 is in the closed state, the distal edges of the peripheral walls 22 and 32 are aligned. More specifically, as best shown in FIG. 8, the convex portions 22 a of the peripheral wall 22
2a. The lower side of the peripheral wall 32 does not have a notch in the thickness direction, but is slightly thinner, and its leading edge is in contact with the outer surface of the projection 32 of the peripheral wall 22. as a result,
The leading edge of the peripheral wall 32 overlaps so as to surround the leading edge of the peripheral wall 22.

As shown in FIG. 2, notches 22 are formed in lower sides (lower wall portions) 22x, 32x of the peripheral walls 22, 32, which are horizontal.
b, 32b are formed, and these notches 22b, 32
A hole 18 for drawing out the electric wire is formed by b. As shown in FIG. 3, protrusions 2 are provided on the edges of the lower wall portions 22x and 32x.
2c and 32c are formed. Lower wall 3 of cover 30
2x constitutes the finger hook 15a of the box 15.

Next, a structure for fixing the box 15 to the side wall 1y of the outer case 1 will be described in detail. Base 20
The main wall 21 has a cylindrical portion 23 (projection) projecting to the back side. The main wall 21 of the base 20 is
The cylindrical portion 23 of the main wall 21 is fitted in a hole 1z formed in the side wall 1y in this state.

At the lower corners of the main wall 21, holes 24 are provided.
Are formed. On the other hand, on the main wall 31 of the cover 30,
Bosses 33 projecting toward the base 20 are formed at both lower corners (lower sides in the closed state). The boss 33 has a tapered outer peripheral surface and a base 33.
a and a tip 33b. An axially extending rib 33x is formed on the outer peripheral surface of the base 33a. The boss portion 33 is hollow, and a hole 33y is formed in an end wall of the tip portion 33b. The diameter of the circumscribed circle of the rib 33x is larger than the hole 24 of the main wall 21. The diameter of the distal end portion 33 b on the base end portion 33 a side is equal to the diameter of the hole 24.

The tip portion 33 of the boss portion 33 of the cover 30
b is fitted into the hole 24 of the main wall 21 of the base 20, and its end face is directly applied to the outer surface of the side wall 1y, and the tip of the rib 33x is applied to the main wall 21. In this state, the cover 30 is firmly fixed by screwing screws 45 (fixing members) passing through the holes 33y of the two bosses 33 into the two screw holes 1m formed by burring on the side wall 1y. . Moreover, since the screws are fixed while pressing the base 20 with the ribs 33x, the base 20 can also be securely fixed.

A terminal mounting portion 25 protruding outward is provided on the upper portion of the base 20. This mounting part 25
The L-shaped tab terminal 50 is attached to the L-shaped tab terminal 50. More specifically, as shown in FIGS. 6 and 7, the mounting portion 25 has an insertion groove 25a and a claw 25b. On the other hand, a square hole 51a is formed in the longer piece 51 of the tab terminal 50, and a burring screw hole 52a is formed in the shorter piece 52. When the long piece 51 of the tab terminal 50 is inserted into the insertion groove 25a of the mounting portion 25,
Although it is elastically deformed by the claw 25b, when it is further inserted, the hole 51a of the piece 51 is fitted into the claw 25b, and the long piece 51 elastically returns. In this manner, the tab terminal 50 can be easily attached to the attachment portion 25.

The long piece 51 of the tab terminal 50 extends horizontally inside the outer case 1 and has an internal electric wire 55 (shown only in FIG. 7) extending from the control unit 8 at its tip.
Is soldered. Also, the short piece 5 of the tab terminal 50
A screw 56 is screwed into the terminal 2, and a terminal 57 a of an external electric wire 57 extending from the remote controller between the head of the screw 56 and the piece 52 (shown only by phantom lines in FIG. 3)
Are connected.

The base 20 has an eave portion 26 formed above the mounting portion 25. This eaves part 2
6 has a horizontal upper wall 26a and side walls 26b extending downward from both ends thereof. The eave portion 26 has a width slightly shorter than the depth of the internal space 17 and covers the upper side and both sides of the mounting portion 25.

The operation of the gas water heater configured as described above will be described with a focus on the connection device 10. The gas hot water supply apparatus is manufactured in a state where the connection device 10 is incorporated as shown in FIG. 1, that is, in a state where the box 15 is closed and fixed to the side wall 1y of the outer case 1 as shown in FIG. Shipped from. The internal wire 55 is already connected to the piece 51 of the tab terminal 50.

When transporting the gas hot water supply device to the installation location,
Handle 9 and box 15 arranged on both sides of outer case 1
And can be easily carried. In addition, since the finger hook 9a formed by the upper wall of the handle 9 and the finger hook 15a at the lower end of the box 15 are at the same height, transportation becomes easier.

Since the box 15 functions as a handle by projecting from the side wall 1y of the outer case 1, the internal space of the outer case 1 is not reduced due to the handle function. In addition, since the lower end serves as the finger hook 15a, it is possible to prevent the box 15 from becoming large due to the formation of the finger hook. Moreover, the cover 30 has a horizontal lower wall portion 22x, and a protrusion 22c protruding downward at the peripheral edge thereof.
, Which makes it easier for a finger to hook.

The box 15 has sufficient strength to withstand the use as a handle as described above. Since the cover 30 is directly fixed to the side wall 1y with the screw 45,
The force applied to the cover 30 is applied to the side wall 1y via the screw 45.
It is because it is accepted. Since the screws 45 are arranged at both lower corners of the cover 30 and receive a force from the lower end of the cover 30, the deformation of the cover 30 can be surely prevented. Further, as shown in FIG. 4 (B), when lifting the gas water heater, a force F obliquely upward acts on the lower end of the cover 30. The difference between the vertical component of this force F and the gravity F _G of the gas water heater becomes the force F _U for lifting the gas water heater. Finally, the resultant force F _T of the horizontal component F _H of this force F and the lifting force F _U acts on the lower end of the cover 30, and the force that tends to pull the cover 30 from the base 20 around the hinge 16. Becomes However, the cover 30 has a side wall 1 near the point of application of the resultant force F _T , that is, at both corners at the lower end.
Since it is fixed to y, the resultant force F _T can be received well.

Since the cover 30 is fixed to the side wall 1y integrally with the base 20 with the common screw 45, the force applied to the cover 30 during the above-mentioned transportation is also distributed to the base 20. In addition, since the boss 33 of the cover 30 is fitted in the hole 24 of the base 20, the force can be satisfactorily dispersed to the base 20. Tube part 2 of base 20
3 fits into the hole 1z of the side wall 1y,
Is transmitted to the side wall 1y even through the cylindrical portion 23, and the load on the screw 45 can be reduced.

After the installation of the gas water heater, the external electric wire 57 from the remote controller is connected to the connection device 10. More specifically, the cover 45 is once opened by removing the screw 45, and the terminal 57a of the external electric wire 57 is connected to the tab terminal 5 by the screw 56.
Stop at 0. Thereafter, the cover 30 is closed, and the box 15 is fixed to the side wall 1y with the screw 45.

As described above, since the box 15 protrudes from the side wall 1y, the possibility of intrusion of rainwater into the internal space 17 from between the base 20 and the cover 30 is increased. Is being dealt with. That is, as described above, since the peripheral wall 22 of the base 20 and the peripheral wall 32 of the cover 30 are fitted with irregularities at the upper edge and both side edges, rainwater intrusion can be avoided. In addition, base 20
Since the thin hinge 16 is disposed on the joint portion between the cover and the cover 30, the hinge 16 can prevent rainwater from directly hitting the joint portion, thereby also preventing rainwater from entering. Even if rainwater enters,
The eaves 26 can prevent rainwater from reaching the connection between the tab terminal 50 and the external electric wire 57. Upper wall 26a of eaves 26
This is because rainwater dripping down from the upper wall 26a flows down along the side wall 26b.

Next, another embodiment of the present invention will be described. In these embodiments, components corresponding to those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. In the second embodiment shown in FIG.
2, a convex portion 22a 'is formed at the center in the thickness direction of the front end surface, and a groove 32 is formed at the center of the front end surface of the peripheral wall 32 of the cover 30.
a ′ (recess) is formed. These convex portions 22a ',
The groove 32a 'extends along the upper edge and both side edges of the base 20, the cover 30. By fitting the convex portion 22a 'into the groove 32a', the peripheral walls 22, 32 are engaged, and it is possible to prevent rainwater from entering.

In the third embodiment shown in FIG.
0 is also provided with an eaves portion 36. The eave portion 36 has a similar shape to the eave portion 26 of the base 20 and covers the upper portion and the left and right of the eave portion 26. Thereby, it is possible to more reliably prevent the rainwater that has entered the internal space 17 from reaching the tab terminal 50.

In the fourth embodiment shown in FIG.
The upper wall 26a 'of the 0 eave 26' has a mountain shape. This inclination allows the rainwater to flow to the left and right without fail, and can avoid reaching the tab terminal 50.

Although the present invention has been described with reference to a gas water heater, the present invention may be applied to a bath kettle, a heater, and a combustion device using oil as fuel.

[0033]

As described above, according to the first aspect of the present invention, the box which can be used as a handle is constituted by the base and the cover of the connecting device, so that the carrying performance can be improved without increasing the number of parts. Can be. Moreover, since the lower end of the protruding box serves as a finger hook, the configuration can be simplified and downsized. According to the second aspect of the present invention, since the base and the cover are fixed to the side wall by the common fixing member, the force applied to the cover during transportation can be dispersed to the base, and the strength as a handle can be improved. Can be. According to the third aspect of the present invention, since the boss portion of the cover is directly fixed to the side wall via the fixing member, the strength as a handle can be improved. According to the invention of claim 4,
The force can be dispersed to the base via the boss portion of the cover, and the strength as a handle can be further improved. Moreover, while pressing the base with this boss,
Since the boss is screwed to the side wall, the base can be securely fixed. According to the fifth aspect of the present invention, since the cover is fixed at both lower corners, the cover can be reliably prevented from being deformed even when a force is applied by applying a finger to the lower end of the cover. The force acting on the lower end of the cover can be received well. According to the invention of claim 6, since the convex portion of the base fits into the side wall, it is possible to satisfactorily receive the force dispersed from the cover to the base. Claim 7
According to the invention, the fingers can be easily hooked by the horizontal lower wall portion and the projection, and the function as a handle can be enhanced. According to the eighth aspect of the present invention, since the finger hooking position of the lower end of the box and the finger hooking position of the handle provided on the side wall on the opposite side of the outer case are set at the same height, the transportation can be further facilitated. According to the ninth aspect, even if rainwater enters from between the base and the cover, it is possible to prevent the terminal from reaching the terminals by providing the eaves on the base. Claim 1
According to the invention of No. 0, since the eaves are also formed on the cover, it is possible to more reliably prevent the rainwater from reaching the terminal. According to the eleventh aspect, it is possible to prevent rainwater from entering the box by fitting the peripheral wall of the base and the cover. According to the twelfth aspect of the present invention, the thin hinge can prevent rainwater from entering the box.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a gas water heater according to one embodiment of the present invention.

FIG. 2 is a bottom view showing a box of a connection device mounted on the gas water heater.

FIG. 3 is a front view showing an open state of the box.

4A is a longitudinal sectional view taken along the line IV-IV in FIG. 3, showing an open state of the box, and FIG. 4B is a longitudinal sectional view showing a closed state of the box.

FIG. 5 is a longitudinal sectional view taken along line VV of FIG. 3;

FIG. 6 is an enlarged sectional view taken along line VI-VI of FIG. 3;

FIG. 7 is an enlarged sectional view taken along line VII-VII in FIG. 3;

FIG. 8 is an enlarged sectional view of a portion VIII in FIG. 4 (B).

FIG. 9 is a diagram corresponding to FIG. 8 showing a second embodiment of the present invention.

FIG. 10 is a view corresponding to FIG. 4 (B) showing a third embodiment of the present invention, and shows only main parts.

FIG. 11 is a view corresponding to FIG. 3 showing a fourth embodiment of the present invention, and shows only main parts.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 exterior case 1x, 1y exterior case side wall 1z hole 9 handle 9a handle finger hook 10 connection device 15 box 15a box bottom finger hook 16 hinge 20 base 21 main wall 22 peripheral wall 22a, 22a 'convex portion 23 cylindrical portion ( Convex part) 24 hole 25 Terminal attachment part 26, 26 'Eave part 30 Cover 31 Main wall 32 Peripheral wall 32a, 32a' Depression 32c Projection 32x Lower wall part 33 Boss 33a Base of boss 33b Tip of boss 36 Eave 45 screw (fixing member) 50 tab terminal

Claims (12)

[Claims] 1. A combustion device in which an apparatus main body is housed in an outer case, a connecting device is mounted on a side wall of the outer case, and an electric wire inside and outside of the outer case is connected via a terminal of the connecting device. The connection device includes a base fixed to an outer surface of a side wall of the outer case, the terminal provided on the base, and a cover attached to the base to cover the terminal. A combustion device comprising a box protruding outward from a side wall of a case, wherein the box is provided as a handle. 2. The combustion apparatus according to claim 1, wherein the base and the cover are fixed to a side wall of the outer case with a common fixing member. 3. The cover according to claim 1, wherein the cover has a boss, and the boss enters a hole formed in the base and is directly fixed to a side wall of the outer case by a fixing member. 2. The combustion device according to 1. 4. The boss has a base extending radially from a peripheral edge of a hole of the base and abutting against the base, and a tip fitted into the hole, and penetrating through the boss. The combustion device according to claim 3, wherein a screw serving as a fixing member is screwed into a screw hole formed in a side wall of the outer case. 5. The box according to claim 2, wherein the box has a rectangular parallelepiped shape, and the cover is fixed to a side wall of the outer case at both lower corners thereof. Combustion equipment. 6. The base is formed with a convex portion protruding inward of the outer case, and the convex portion is fitted into a hole formed in a side wall of the outer case. The combustion device according to any one of claims 1 to 5, wherein: 7. The cover according to claim 1, wherein the cover has a horizontal lower wall and a projection formed on an edge of the lower wall and projecting downward. A combustion device according to any one of the above. 8. The exterior case, wherein a handle is provided on a side wall opposite to a side wall on which the connection device is mounted, and a finger hooking position of the handle is set at a height equal to a lower end of the box. The combustion device according to claim 1. 9. The combustion device according to claim 1, wherein an eave portion is formed on the base above a mounting portion of the terminal. 10. The combustion apparatus according to claim 9, wherein another eave portion located above the eave portion of the base is formed on the cover. 11. The base has a main wall in contact with a side wall of the exterior case, and a peripheral wall formed on a peripheral edge of the main wall. The cover has a main wall facing the main wall of the base, It has a peripheral wall formed on the peripheral edge of the main wall, and the distal ends of the peripheral wall of the base and the cover are in contact with each other, and at least on the upper side, the distal edges of these peripheral walls fit each other with irregularities. The combustion device according to claim 1. 12. The base and the cover are formed of an integral resin molded product, and are connected at the upper end thereof via a thin hinge, and the hinge extends along the upper edge of the both. The combustion device according to claim 1.