JP2003097481A - Drainage pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drainage pump for preventing the rotation of a case body member by preventing the rotational movement of a motor receiving member for constituting a case and a locking piece in the case body member. SOLUTION: This drainage pump 1 is provided with the case 2 having a suction port 21 arranged in a lower end part and a drain port 22 arranged in an upper side surface, a rotary body 3 rotatably housed in the case 2, and a motor 4 for rotating the rotary body 3. The case 2 is composed of the case body member 23 and the motor receiving member 25. Each of the case body member 23 and the motor receiving member 25 has a locking part 24 or a locking object part 26. A means 261 is arranged for preventing the rotational movement of the locking part 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage pump, and more particularly to a drainage pump for draining drain water of an air conditioner.

[0002]

2. Description of the Related Art A drainage pump is used for drainage of drain water of an air conditioner installed on the ceiling or the like. As shown in FIG. The condensed water (drain water) 7 stored in the drain pan 6 is discharged to the outside by the drainage pump 1. The drainage pump 1 includes a case 2, a rotating body 3, and a motor 4. The case 2 has a water intake port 21 provided at the lower end and a drain port 22 provided at the upper side surface. The rotating body 3 is rotatably housed in the case 2. The motor 4 is a drive source that rotates the rotating body 3. As the motor 4, for example, a DC motor is used.

When the motor 4 is driven with the water level in the drain pan 6 reaching the water level that closes the water intake port 21, the water 7 contacting the lower end of the rotary body 3 rises due to centrifugal force as the rotor 3 rotates. To reach the position of the drainage port 22, and is discharged to the outside of the air conditioner 5 via the drainage pipe.

The case 2 of the conventional drainage pump 1 is composed of a case body member and a motor receiving member for mounting the motor 4, and the motor receiving member and the case body member are assembled to form the case 2. The case body member and the motor receiving member are locked by a clamp-type locking means, and a locking piece extending in the assembling direction is provided on the case body member, and the claw portion of the locking piece is formed on the motor receiving member. It was locked to the locked part.
However, in the conventional case, it was not possible to sufficiently prevent the case body member from rotating around the central axis of the drainage pump 1 during assembly or the like.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art and prevents rotation of locking members of a motor receiving member and a case body member that form a case, so that the case body member rotates. It is an object of the present invention to provide a drainage pump that prevents

[0006]

According to the present invention, there is provided a case having a water inlet provided at a lower end and a drain provided at an upper side surface, a rotating body rotatably accommodated in the case, and the rotating body. In a drainage pump including a motor for rotating a body, the case includes a case body member and a motor receiving member, and the case body member and the motor receiving member each have a locking portion or a locked portion. The drainage pump is provided with means for preventing the locking portion from rotating.

According to the present invention, the motor receiving member is
The case body member has a locked portion provided with a protrusion, and the case main body member is provided with a rotation preventing portion that is prevented from rotating by the protrusion of the locked portion of the motor receiving member and a claw provided at the tip. It is a drainage pump which has a locking part which consists of one piece.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described. An embodiment of the drainage pump of the present invention will be described below with reference to FIGS. 1 and 2. 1A to 1C are a top explanatory view, a main part enlarged explanatory view, a front explanatory view and a side explanatory view of a drainage pump of an embodiment, respectively. FIG. 2 is a schematic explanatory diagram of a drainage pump and an air conditioner.

An example will be described. As shown in FIG. 2, the drainage pump 1 of this embodiment includes a case 2, a rotating body 3, and a motor 4. As shown in FIG. 1, the case 2 includes a case body member 23 and a motor receiving member 25, and has a water intake port 21 and a drain port 22. Water intake 21
Is provided at the lower end of the case 2 and is immersed in the drain water 7 in the drain pan 6. The drain port 22 is provided on the upper side surface of the case 2 and drains the drain water 7 to a drain pipe (not shown). Case body member 23 and motor receiving member 25
Will be described later. The rotating body 3 is composed of rotating blades, and is rotatably accommodated in the case 2. By rotating the rotating blades, the drain water 7 in the drain pan 6 is pumped up from the water intake port 21 and passed through the drainage port 22. Discharge to the outside. The motor 4 is connected to a lead wire 41 and is attached to the drain pump 1 at a position above the case 2 with a screw 42.

With respect to the case body member 23 and the motor receiving member 25 constituting the case 2 of the drainage pump 1 of the embodiment,
explain. The case main body member 23 has a locking piece 24 having a rotation preventing portion 241 and a claw 242, and the motor receiving member 25 has a locked portion 26 having a protrusion 261. When the claw 242 of the locking piece 24 is locked to the locked portion 26, the case body member 23 and the motor receiving member 2
5 is assembled. Then, even if a force to rotate the case body member 23 acts, the rotation preventing portion 241 of the locking piece 24
Collides with the protrusion 261 of the locked portion 26, the locking piece 2
4 does not rotate, and the case body member 23 does not rotate.

[0011]

As described above, according to the present invention, it is possible to obtain a drainage pump in which the motor receiving member constituting the case and the locking piece in the case body member are prevented from rotating and the case body member is prevented from rotating.

[Brief description of drawings]

FIG. 1 is a top view, a main part enlarged view, a front view and a side view of a drainage pump according to an embodiment.

FIG. 2 is an explanatory diagram of a drainage pump and an air conditioner.

[Explanation of symbols]

1 drainage pump 2 cases 21 Water intake 22 Drainage port 23 Case body member 24 Locking piece 241 Rotation prevention part 242 nails 25 Motor receiving member 26 Locked part 261 protrusion 3 rotating bodies 4 motor 41 lead wire 42 screws 5 Air conditioner 6 drain pan 7 drain water

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Claims (2)

[Claims] 1. A case having a water inlet provided at a lower end portion and a water outlet provided at an upper side surface, a rotating body rotatably accommodated in the case, and a motor rotating the rotating body.
In the drainage pump, the case includes a case main body member and a motor receiving member, and the case main body member and the motor receiving member each have a locking portion or a locked portion, and the locking portion rotates. A drainage pump provided with means for preventing the above. 2. The drainage pump according to claim 1, wherein the motor receiving member has a locked portion provided with a protrusion,
The case main body member has a locking portion formed of a locking piece having a rotation preventing portion that is prevented from rotating by a protrusion of a locked portion of the motor receiving member and a claw provided at the tip. Drainage pump.