JP2005009461A - Assembly structure of casing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide assembly structure of a casing capable of simply mounting two plate members composing the casing in the casing such as a blower or the like. <P>SOLUTION: In the structure, a peripheral plate 24 is mounted to a left side plate 20 composing the casing 12 of a sirocco fan. The left side plate 20 and the peripheral plate 24 are fixed by press-fitting the peripheral plate 24 between a first pawl 26 provided on the peripheral plate and a second pawl 30 consisting of a notch 28. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an assembly structure of a casing used for a blower or the like.
[0002]
[Prior art]
Conventionally, a sirocco fan or a turbo fan has been used for combustion of a water heater.
[0003]
As a sirocco fan, the rotor inside the casing of the sirocco fan and the boss at the center of this rotor are connected by four connecting parts, a motor is arranged inside the rotor, and the rotating shaft of the motor is fixed to the boss. (Patent Document 1).
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 7-4382
[Problems to be solved by the invention]
The sirocco fan or turbofan casing as described above is inserted into the rectangular square hole provided on the metal side plate with the claw provided on the metal peripheral plate forming the wall around the casing, and then protrudes. Claws that have been crimped with a jig are assembled.
[0006]
For this reason, it is necessary to caulk the nails one by one, which requires a large number of work steps, resulting in poor workability and productivity.
[0007]
Further, in order to reduce the number of assembling steps, when a jig for crimping all the claws in the casing at once is produced, there is a problem that the structure of the jig becomes complicated and expensive.
[0008]
Then, this invention provides the assembly structure of the casing which can attach easily the two board members which comprise the casing in casings, such as an air blower.
[0009]
[Means for Solving the Problems]
The invention of claim 1 is an assembly structure of a casing in which the second plate member is attached to the first plate member constituting the casing, and the first claw protrudes from the side portion of the first plate member, The first claw is bent in the direction in which the second plate member is attached, and the second claw is formed by cutting out the side portion of the first plate member in the vicinity of the first claw. The second claw is bent in the direction in which the second plate member is attached, and the second plate member is press-fitted between the first claw and the second claw. The assembly structure of the casing characterized by the above.
[0010]
The invention according to claim 2 is the casing assembly structure according to claim 1, wherein the casing is a casing of a blower.
[0011]
[Operation]
A first plate is formed by press-fitting the second plate member between a first claw protruding from the plate member of claim 1 and a second claw formed by a notch in the first plate member. The member and the second plate member can be fixed.
[0012]
In this case, it is not necessary to caulk the first claw and the second claw, workability and productivity are improved, and a special jig is not required, so that the cost can be reduced.
[0013]
With the assembly structure of the casing of claim 2, by assembling the casing of the blower with the assembly structure of claim 1, it is possible to reduce the cost of the blower and improve workability.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a sirocco fan 10 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6.
[0015]
FIG. 5 is a plan view of the sirocco fan 10 and FIG. 6 is a side view.
[0016]
As shown in FIGS. 5 and 6, the casing 12 of the sirocco fan 10 has a substantially cylindrical shape, an air suction port 14 is opened on the left side surface, and an air discharge path 16 is formed radially outward from the outer periphery thereof. It protrudes and a discharge port 18 is provided at its tip.
[0017]
Inside the casing 12, a rotor that is rotated by a motor (not shown) is rotatably arranged. As the rotor rotates, the sirocco fan 10 sucks air from the suction port 14 and discharges it from the discharge port 18.
[0018]
The structure of the casing 12 will be described in more detail.
[0019]
The casing 12 includes a left side plate 20 in which a left side portion of the discharge passage 16 protrudes from a circular metal plate, and a right side plate 22 having a symmetrical shape, and is disposed between the left side plate 20 and the right side plate 22. It is formed by a peripheral plate 24 that forms the outer peripheral wall of the casing 12. The left side plate 20 has the suction port 14 described above opened.
[0020]
Next, the attachment structure of the left side plate 20 and the peripheral plate 24 will be described with reference to FIGS.
[0021]
As shown in FIGS. 1 and 2, a first claw 26 protrudes from a side portion, that is, an edge portion of the left side plate 20. Further, a notch 28 is formed in the left side plate 20 at a position different from the position where the first claw 26 protrudes, and a second claw 30 is provided by bending the notch 28. Yes. The first claw 26 and the second claw 30 are bent in the direction in which the peripheral plate 24 is attached. In addition, the 1st nail | claw 26 and the 2nd nail | claw 30 mutually oppose that the 1st nail | claw 26 and the 2nd nail | claw 30 are provided in the position shifted | deviated slightly along the side part of the left side board 20. Thus, since the notch 28 and the first claw 26 are provided at the same position and the mechanical strength is weakened, the first claw 26 and the second claw 30 are not shown in FIG. For example, the distance A in FIG.
[0022]
A plurality of sets of the first claw 26 and the second claw 30 are provided along the side portion of the left side plate 20. For example, in FIG. 5, eight sets of first claws 26 and second claws 30 are provided.
[0023]
As shown in FIGS. 3 and 4, the edge of the peripheral plate 24 is press-fitted and fitted between the first claw 26 and the second claw 30. Thus, the peripheral plate 24 can be attached to the left side plate 20 at a right angle by press-fitting the peripheral plate 24 between the first claw 26 and the second claw 30.
[0024]
Similarly, the right side plate 22 can be attached by providing eight sets of first claws 26 and second claws 30 and press-fitting the peripheral plate 24 to the first and second claws.
[0025]
As described above, the first plate 26 and the second plate 30 are provided on the left side plate 20 and the right side plate 22, respectively, and the casing 12 is assembled by press-fitting the peripheral plates 24 to each other. Can do. In this case, it is not necessary to caulk the nails as in the conventional case, so that workability is improved and cost can be reduced. In addition, a special jig or the like is not required for mounting, and the cost can be reduced from this viewpoint.
[0026]
(Example of change)
Needless to say, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.
[0027]
Although the assembly structure of the casing 12 in the sirocco fan 10 has been described in the above embodiment, the present invention is not limited to this, and the casings of other blowers may be assembled using the first claws 26 and the second claws 30.
[0028]
In addition, the present invention is applicable not only to the blower but also to any device that uses other metal plate members.
[0029]
【The invention's effect】
As described above, in the assembly structure of the casing of the present invention, the two plate members are formed by press-fitting the second plate member between the first and second claws provided on the first plate member. Since it can be fixed, it can be easily assembled and applied to a casing of a blower or the like.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state in which a peripheral plate is being attached to a left side plate in a casing showing an embodiment of the present invention.
FIG. 2 is a front view of the same.
FIG. 3 is a perspective view of the left side plate with a peripheral plate attached thereto.
FIG. 4 is a front view of the same attached state.
FIG. 5 is a side view of the casing.
FIG. 6 is a front view of the casing.
[Explanation of symbols]
10 Sirocco fan 12 Casing 14 Suction port 16 Discharge path 18 Discharge port 20 Left side plate 22 Right side plate 24 Perimeter plate 26 First claw 28 Notch 30 Second claw

Claims (2)

An assembly structure of a casing for attaching a second plate member to a first plate member constituting the casing,
A first claw protrudes from a side portion of the first plate member, and the first claw is bent in a direction in which the second plate member is attached,
A side portion of the first plate member in the vicinity of the first claw is cut away to form a second claw, and the second claw is bent in a direction in which the second plate member is attached. And
The casing assembly structure, wherein the second plate member is press-fitted between the first claw and the second claw. The casing assembly structure according to claim 1, wherein the casing is a casing of a blower.

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