JP3637818B2 - Motor base mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a motor base mounting structure used in an outdoor unit or the like of an air conditioner.
[0002]
[Prior art]
Conventionally, as a motor base mounting structure, there is an outdoor unit of an air conditioner that is fixed to a bottom frame in a state where a motor base to which a motor for driving an outdoor fan is mounted is erected. In this motor base mounting structure, two engaging claws provided at both ends of the lower end portion of the motor base are respectively engaged with engaging holes provided in the bottom frame, so that the lower end portion of the motor base is separated into two pieces. By fixing to the bottom frame using screws, the strength required to support the outdoor fan and the motor is obtained.
[0003]
[Problems to be solved by the invention]
However, the mounting structure of the motor base has a drawback in that the number of mounting steps is increased and the cost is increased because the motor base is fixed to the bottom frame with two screws in a standing state.
[0004]
Accordingly, an object of the present invention is to provide a mounting structure for a motor base that can be securely fixed in a state where the motor base is erected on a bottom frame with a single screw, and that can reduce mounting man-hours and costs.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the motor base mounting structure according to claim 1 is provided on both sides of the lower end of the motor base in the motor base mounting structure fixed with the motor base standing upright on the bottom frame. Two engaging claws, and two engaging holes with sharp edges provided on the bottom frame so that the engaging claws of the motor base are engaged with each other. The lower end of the motor base is moved in the state in which the engaging claws are respectively engaged with the engaging holes while pressing the concave portions of the engaging claws against the acute end portions of the engaging holes of the bottom frame. In the mounting structure of the motor base fixed to the bottom frame with one screw , the motor base has a trapezoidal convex section provided on the bottom frame and having a slope with a part of the lower end portion of the motor base overlapping. Slope and lower end of motor base Is characterized in that fixed by the screw portions overlap.
[0006]
According to the mounting structure of the motor base of the first aspect, when the motor base is fixed to the bottom frame, the two engaging claws provided on both sides of the lower end portion of the motor base are provided with the two engaging claws provided on the bottom frame. Inserting each into the engagement hole and pressing the recess of the engagement claw of the motor base against the sharp tip of the engagement hole (the part gradually narrowing toward the outside) will cause the motor base to It will be in the state positioned at two places of the engagement hole. Then, in that state, for example, by fixing the lower end portion of the motor base to the bottom frame with a single screw except for the area on the straight line connecting the both engaging claws, the motor base is formed at three points forming a triangle. It is firmly fixed and the engaging claw at the lower end of the motor base does not come out from the engaging hole in the bottom frame. Therefore, the motor base can be securely fixed on the bottom frame in a state where the motor base is erected with a single screw, and the mounting man-hour and cost can be reduced.
[0007]
[0008]
In addition , by fixing with the screw at the portion where the slope of the convex part of the trapezoidal cross section of the bottom frame and the lower end of the motor base overlap, the lower end of the motor base and the bottom frame are in contact with each other in a horizontal plane. The strength of the motor base can be improved because the motor base is supported by the surface of the portion where the slope of the convex portion of the bottom frame and the lower end of the motor base overlap with each other.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The motor base mounting structure of the present invention will be described in detail below with reference to the illustrated embodiments.
[0010]
FIG. 1 (A) is a front view showing a state of the mounting structure of the motor base according to the embodiment of the present invention, and FIG. 1 (B) is a side view seen from the left side of FIG. 1 (A). As shown in FIGS. 1A and 1B, a motor base 2 is fixed in an upright state on a bottom frame 1 in which a bent portion 1a extending upward is formed at an outer edge portion. The motor base 2 includes a substantially rectangular base 23 having a mounting hole 23a for attaching a motor (not shown), two lower support members 22 extending downward from both corners on the lower side of the base 23, The lower end 21 for connecting the lower ends of the lower support members 22, the two upper support members 24 extending upward from the upper corners of the base 23, and the upper ends of the upper support members 24 are connected. And an upper end 25. Reinforcing bent portions 22a and 24a are provided on the outer edges of the lower support member 22 and the upper support member 24, respectively. The bottom frame 1 and the motor base 2 are each formed by forming one metal plate into a three-dimensional shape by forming a plate material. The upper end portion 25 of the motor base 2 is fixed to a top plate (not shown).
[0011]
2A shows a top view of the main part of the bottom frame 1 to which the motor base 2 is attached, and FIG. 2B shows an enlarged view of a region B shown in FIG. 2A. . As shown in FIG. 2A, the bottom frame 1 is provided with a convex portion 11 having a substantially trapezoidal cross section. In the vicinity of both ends of the substantially rectangular upper surface 11a of the convex portion 11 of the bottom frame 1, there are provided elongated hole-shaped engagement holes 10 and 10 that are substantially perpendicular to the longitudinal direction of the upper surface 11a. One of the 10, 10 longitudinal directions (upward in FIG. 2 (A)) has an acute shape with the tip gradually narrowing toward the outside. On the other hand, the lower end portion 21 of the motor base 2 has a bent portion 21a that bends at a substantially right angle and an inclined portion 21b that bends obliquely downward from the tip of the bent portion 21a. Further, as shown in FIG. 2B, at both ends of the bent portion 21a, a base portion 31 that extends outward, and a hook-like engagement claw 32 that extends downward from the tip of the base portion 31 and curves further to the side. And are provided. With the engaging claws 32 of the motor base 2 engaged with the engaging holes 10 and 10 of the bottom frame 1, the lower end of the motor base 2 is placed on the upper surface 11 a and the slope 11 b of the convex portion 11 of the bottom frame 1. 21 bent portions 21a and inclined portions 21b overlap each other.
[0012]
3A shows a state before the motor base 2 is fixed to the bottom frame 1, and FIG. 3B shows a state when the motor base 2 is fixed to the bottom frame 1. Hereinafter, the mounting procedure of the motor base 2 will be described with reference to FIGS.
[0013]
First, from the state shown in FIG. 3 (A), the engaging claw 32 of the motor base 2 is inserted into the engaging hole 10 of the convex portion 11 of the bottom frame 1 in the direction of arrow R1, as shown in FIG. 3 (B). Then, the motor base 2 is moved substantially horizontally in the direction of the arrow R2, and the root recess 32a of the engagement claw 32 of the motor base 2 is an acute tip portion of the engagement hole 10 of the projection 11 of the bottom frame 1 (see FIG. 2 (B)). Next, in this state, a screw 40 is inserted into the hole 20 in the lower end portion 21 of the motor base 2 and screwed into the screw hole 30 in the convex portion 11 of the bottom frame 1. By doing so, the lower end portion 21 of the motor base 2 is fixed in an upright state on the bottom frame 1 by two engaging claws 32 and one screw 40.
[0014]
In this manner, the motor base 2 can be securely fixed on the bottom frame 1 with the single screw 40, and the mounting man-hour and cost can be reduced.
[0015]
Moreover, by fixing with the screw 40 in the part which the slope 11b of the convex part 11 of the trapezoid cross section of the said bottom frame 1 and the inclined part 21b of the lower end part 21 of the motor base 2 overlap, with respect to the twist of the motor base 2 Since the inclined surface 11b of the convex portion 11 of the bottom frame 1 and the inclined portion 21b of the lower end portion 21 of the motor base 2 are supported by the slope, it is more outdoor than when the lower end portion of the motor base is in contact with the bottom frame in a horizontal plane. The strength of the motor base 2 that supports the fan and motor can be improved.
[0016]
In the above-described embodiment, the mounting structure of the motor base of the outdoor unit of the air conditioner has been described. However, the apparatus is not limited to the outdoor unit of the air conditioner, but is another device that is fixed in a state where the motor base stands on the bottom frame. Of course, the present invention may be applied.
[0017]
【The invention's effect】
As apparent from the above, the motor base mounting structure of the invention of claim 1 is a motor base mounting structure in which the motor base is fixed upright on the bottom frame, on both sides of the lower end of the motor base. The motor base having two engaging claws provided, and two engaging holes with sharp tips provided on the bottom frame so that the respective engaging claws of the motor base are engaged with each other. In the mounting structure of the motor base in which the lower end of the motor base is fixed to the bottom frame with one screw in a state where the engaging pawl is pressed against the sharp tip of the engaging hole of the bottom frame and engaged with the engaging hole . A protrusion having a cross-sectional trapezoidal shape provided on the bottom frame and having an inclined surface on which a part of the lower end of the motor base overlaps; is fixed by the screw in the portion where the lower end overlaps Than it is.
[0018]
Therefore, according to the mounting structure of the motor base of the first aspect, the two engaging claws provided on both sides of the lower end of the motor base are respectively inserted into the two engaging holes provided in the bottom frame, The motor base is firmly fixed by fixing the lower end of the motor base to the bottom frame with one screw while pressing the engaging claw of the motor base against the sharp tip of the engagement hole. The engagement claw at the lower end of the motor base does not come out of the engagement hole of the frame. Therefore, the motor base can be securely fixed on the bottom frame in a state where the motor stand is erected with a single screw, and the number of mounting steps and cost can be reduced.
[0019]
Further, since the fixed slopes and motor base bottom portion and the overlap portion of the convex portion of the trapezoidal cross section formed in the upper Symbol bottom frame by the screw, the motor base of the lower portion and the bottom frame is in contact with the horizontal plane Compared to the above, the strength is improved against the twist of the motor base.
[Brief description of the drawings]
FIG. 1 (A) is a front view showing a motor base mounting structure according to an embodiment of the present invention, and FIG. 1 (B) is a side view of FIG. 1 (A) viewed from the side. is there.
FIG. 2 (A) is a top view of the main part as viewed from line II-II in FIG. 1 (B), and FIG. 2 (B) is an enlarged view of region B shown in FIG. 2 (A). is there.
FIG. 3 (A) is a view showing a state of a main part before the motor base is fixed to the bottom frame, and FIG. 3 (B) is a main part when the motor base is fixed to the bottom frame. It is a figure which shows the state of.
[Explanation of symbols]
1 ... Bottom frame,
2 ... Motor stand,
10 ... engagement hole,
11 ... convex part,
21 ... lower end,
32 ... engaging claw,
40 ... Screw.

Claims (1)

In the mounting structure of the motor base fixed with the motor base ( 2 ) standing on the bottom frame ( 1 ) ,
Two engaging claws ( 32 ) provided on both sides of the lower end ( 21 ) of the motor base ( 2 ) ;
Has two engaging holes and (10) of the engaging pawl (32) is tip sharp shape provided on the bottom frame (1) to s engage each of said motor base (2),
The engagement claws the engaging while pressing the sharp tip portion of the engaging hole of the recess (32) (32 a) of the bottom frame (1) (10) claw of the motor base (2) (32) Of the motor base in which the lower end portion ( 21 ) of the motor base ( 2 ) is fixed to the bottom frame ( 1 ) with one screw ( 40 ) in a state in which each of the motor bases is engaged with the engagement holes ( 10 ) . In the mounting structure,
A convex part (11) having a trapezoidal cross section provided on the bottom frame (1) and having a slope on which a part of the lower end part (21) of the motor base (2) overlaps;
The motor base mounting structure, wherein a portion where the slope of the convex portion (11) and the lower end portion (21) of the motor base (2) overlap is fixed by the screw (40).

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