JP2515177Y2 - Mounting structure for portable heater furnace tube and fan base - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to an improvement in the mounting structure of a transportable heater, and provides a structure in which vibration noise is less likely to occur during operation.

2. Description of the Related Art As a conventional method for attaching a combustion cylinder and a fan base of a portable heater, as shown in FIG. 5, U-shaped notches are formed at predetermined intervals on both longitudinal edges of the lower side 1 of a two-division type shell. 2 is provided, a bracket 4 having an L-shaped cross section is joined to the side surface of the combustion tube 3 at the same interval as the notch, and the notch 2 of the lower shell is fitted to both ends of the base 5 of the blower fan. It is made up of bent parts 5a that fit together,
After fitting the bracket 4 and the fan base 5 of the combustion tube 3 into the notches of the shell 1, the upper shell 6 is covered,
Further, in the vicinity of the notch 2, the bracket 4 or the base 5
There is known a type in which shells 1 and 6 are clamped and fixed by bolts 9a and nuts 9b so as to sandwich. still,
Reference numeral 7 is a friction clip mounted between the shells 1 and 6.

Problems to be Solved by the Invention In such a conventional portable heater mounting structure for the combustion cylinder and the like, since the fan base and the bracket of the combustion cylinder are only fixed by being sandwiched by the shell member, the rotation of the motor or the like is prevented. There is an inconvenience that a chattering noise is generated due to vibration associated with

The present invention has been made in view of the above-mentioned drawbacks of the prior art, and an object of the present invention is to provide a mounting structure for a combustion cylinder and a fan base that is less likely to cause chatter noise.

Means for Solving the Problems That is, the present invention is to provide a tubular shell of two upper and lower halves supported via legs mounted on a fuel tank, a fan for fan supported in the shell, and a fan for the fan. A portable heater consisting of a combustion cylinder equipped with a fuel spray nozzle supported forward and a spark plug, etc., in which the upper and lower sides of the tubular shell have horizontal flange portions at both ends in the longitudinal direction of the shell. Horizontally projecting brackets joined to the side surface of the cylinder at a predetermined interval are engaged with the flange of the lower shell, and further, a fan base with both ends supporting the blower fan horizontally bent is the lower side. The bolts and nuts that are engaged with the flange portion of the shell and the flanges of the upper and lower shells are connected to each other through the bracket and the fan base. This object is achieved by the attachment structure of the furnace tube of the portable heater and the fan base that are clamped and fixed.

Action In the attachment structure of the furnace tube and the fan base of the portable heater according to the present invention, since the bracket and the fan base joined to the combustion tube are engaged with the flange portion of the lower shell, It will resist vibrations in any direction. Further, since the bracket and the fan base are sandwiched by the upper shell and the shell, the bracket, and the base are configured to be tightened and fixed by bolts or the like, it is possible to resist vibration in the vertical direction and the front-back direction. .

Further, since the bracket or the base member is sandwiched between the upper and lower shells, a predetermined gap is created between the shells, so that the shells are prevented from colliding with each other.

Embodiments The present invention will be described in detail below with reference to an embodiment shown in the drawings.

In the figure, 10 is a lower shell that forms a cylindrical combustion outer cylinder, and the shell 10 is supported by legs on a fuel tank to which wheels are mounted. The shell 10 has a shape in which a tubular shape having a square cross section is divided into two parts, and its longitudinal edge is bent in the horizontal direction to form a flange part 10a, and the flange part 10a has a predetermined location. U-shaped notches 11 are provided at intervals.

In the flange 10a of the shell 10 having the notch 11,
A hole 13 for penetrating the bolt 8 is bored.

Reference numeral 12 denotes a combustion cylinder to which a fuel spray nozzle and an ignition plug are attached, and a bracket 14 is joined to a side surface portion of the combustion cylinder at a symmetrical position, and the bracket projects vertically from the cylinder 12, It is bent vertically.

Further, a hole 15 through which a bolt can pass is formed in each horizontal portion of the bracket 14.

Reference numeral 16 denotes a U-shaped fan base that spreads toward an open portion for separating the blower fan 17 of the combustor from the outer cylinder with a predetermined distance, and both end portions of the fan base are horizontally bent. It has a horizontal portion 16a and an engaging portion 16b in which the tip of the horizontal portion is bent in the vertical direction. Bolt holes 18 are formed in the horizontal portion.

19 is an upper shell that is tubular and corresponds to the shell 10,
The longitudinal edge of the shell 19 has a flange portion 19a bent in the horizontal direction, and the tip of the horizontal portion is bent in the vertical direction. Further, a bolt penetration hole 20 is also formed at a position corresponding to the hole 13 formed in the shell 10 in the horizontal portion of the shell 19.

In the above-mentioned structure, first, the bracket 14 and the fan base 16 are fitted into the notch 11 of the lower shell 20 so that the shell 10, the combustion cylinder 12 and the fan 17 are separated from each other.

After that, the upper shell 19 is covered, and the bracket 14 and the fan base 16 are sandwiched between the shells 10 and 19. At that time, each shell 10, 19 and bracket 14 or fan base 1
The holes 13, 15, 20, 18 drilled in 6 are aligned with each other.

After aligning, bolts are passed through the holes 13, 15, 20 and 18 and tightened and fixed with nuts or the like.

When tightened and fixed, a gap 21 is formed between the shells 10 and 19 by a predetermined distance as shown in FIG. The warm air rarely leaks from the gap 21.

Therefore, in the assembly structure according to the present embodiment, the shell 1
There is no overlap between 0 and 19, and the shells do not collide with each other due to vibration.

Since the shells 10, 19 and the bracket 14 or the fan base 16 are fastened and fixed with bolts and nuts, both the fan base 16 and the combustion cylinder 14 are less likely to vibrate.

FIG. 4 shows another embodiment. Instead of the cutout portion provided in the flange portion 10a of the lower shell, a plate member 2 is provided in the horizontal portion at the same intervals as the width of the bracket 15 and the fan base.
This is a type in which 2, 23 are joined, and the thickness of the plate members 22, 23 is the same as the plate members of the bracket 14 and the fan base 16.

In this embodiment, the bracket 14 and the fan base 16 are engaged in the space between the plate members 22 and 23, and then the upper shell 19 is aligned and tightened with bolts and nuts.

In this case, the bracket and the fan base are engaged with the flange portion and the plate member to resist the vibration in the front-rear direction and the left-right direction, and the tightening of the bolt and the nut resists the vibration in the vertical direction.

In this case, the same effect can be obtained with only the plate members 22 and 23 on the combustion cylinder 12 side.

Further, the same effect can be obtained by providing a convex portion on the flange portion of the shell by pressing or the like instead of the plate materials 22 and 23.

Effect As described above, in the assembly structure according to the present invention, a predetermined gap is provided between the shells of the related art in which shells are overlapped with each other and engaged so that no space is formed between the shells. Since the shells are separated by the bracket or the fan base, and the shells are fastened by the bolts and nuts penetrating through the bracket and the fan base, the chatter noise generated when the device is operated can be reduced.

[Brief description of drawings]

1 to 4 show an embodiment of the device according to the present invention, and FIG. 1 is an exploded perspective view showing the assembly structure of the device,
FIG. 2 is a partial cross-sectional view showing a joining state between shells, FIG. 3 is a partially transparent side view showing a state of a gap between shells in a state in which the device is assembled, and FIG. 4 is a device showing another embodiment. Fig. 5 is an exploded perspective view, Fig. 5 is an exploded perspective view showing an assembly structure in the conventional technique, and Fig. 6 is a partially transparent side view showing a state of a gap between shells in the conventional technique. 1,10 …… Lower shell, 2,11 …… Notch 3,12 …… Combustion tube, 4,14 …… Bracket 5,16 …… Fan base, 6,19 …… Upper shell 7 …… Frictional clip , 8 ...... Bolt 10a ...... Flange, 13,15,18,20 ...... Hole 17 ...... Blower fan, 16a ...... Horizontal part 16b ...... Engagement part, 19a ...... Flange 21 ...... Gap, 22, 23 …… Plate material

Claims (1)

(57) [Scope of utility model registration request] 1. A tubular shell of upper and lower halves supported by legs mounted on a fuel tank, a blower fan supported in the shell, and a fuel spray nozzle supported in front of the fan. In a portable heater comprising a combustion cylinder fitted with a spark plug and the like, the tubular shell is composed of upper and lower shells having horizontal flanges at both ends in the longitudinal direction of the shell, and the side surface of the combustion cylinder has a predetermined interval. The joined bracket protruding in the horizontal direction is engaged with the flange of the lower shell, and the fan base whose both ends supporting the blower fan are bent in the horizontal direction is engaged with the flange portion of the lower shell. The connection of the flanges of the upper and lower shells is fixed by tightening bolts and nuts that penetrate through the bracket and the fan base. Flue and fan base of the mounting structure of a portable heater for the.