JPS59106845A - Canned motor - Google Patents

Abstract

PURPOSE:To reduce the cost by simultaneously sealing an opposite load side bearing when molding and integrally forming a stator, a can, an opposite load side bearing support and blocking plug female threads, thereby decreasing the number of steps. CONSTITUTION:When a stator core 2, a stator winding 3 and a can 4 are molded to integrally mold a frame 5, the opposite load side of the frame 5 is formed in a shape bent toward the central direction in L-shaped section, and a through hole 5a is formed. In this case, threads 5C to be engaged with a blocking plug 8 are simultaneously formed, a bearing member 6 is sealed and integrally molded. The bearing 6 rotatably supports the shaft 13. The shaft 13 is supported to the bearing 11 at the load side to drive a runner 17. A water stream is produced by the rotation of the runner 17, passed partly through a hole 9h of a bracket 9 to cool the can 4 and the like. In this manner, the number of parts and steps are reduced, thereby reducing the cost.

Description

[Detailed description of the invention]

[Technical Field of the Invention] The present invention relates to an improvement in a cant mole having a frame body molded with a molding material for molding a stator and a can, which are used as a driving source for, for example, a canned type electric circulation pump device. [Prior Art] Let's explain the conventional type of Khaled Motor according to Figure ff11. In the figure, 1 is a stator consisting of a stator core 2 and a stator winding 3 wound around this stator core 2;
4 is a thin cylindrical can joined to the inner circumferential surface of the stator core 2; 5 is a frame molded with a molding material made of resin, for example, for molding the can 4 and the stator 1; A threaded fitting hole 5a provided on the load side, a threaded part 5C consisting of a female threaded part provided continuously in the fitting hole 5a, and a threaded part 5C continuously provided in the threaded part 5C of the threaded part B. tL, t: Large diameter portion 5h
A large-diameter fitting portion 5d and a small-diameter fitting portion 5e provided on the load-side inner peripheral portion are integrally molded. 6 is a fitting hole 5a
7 is a first water seal member consisting of an O-ring fitted into the large diameter portion 5b; 8 is a male threaded portion 8;
A is in q joint part 5C! ! At the same time, the flange portion 8b presses the first water seal member 7 against the shoulder portion of the large diameter portion 5b to seal the large diameter portion 5h watertightly. 5d, and the fitting portion 9b is loosely fitted to the small diameter fitting portion 5e.
A load (lil bracket, 9d is formed on the inner circumference of the load side planar r, The boss portions 9f and 9g in which the through holes 9e are formed are outer circumferential surfaces of different diameters that are continuous with the outer circumferential surface of the boss portion 9d.
h is provided in the boss portion 9d in the axial direction; t: through hole; 10;
A second water seal member 11 is made of an O-ring which is fitted into the circumferential surface 9g and is pressed against the inner circumferential surface of the can 4 and the shoulder of the circumferential surface 9g; A load-side cylindrical bearing, 12 a rotor core paired with the stator core 2, 13 a rotor shaft fitted to the inner peripheral surface of the rotor core 12, and a pair of co-bearings 6. ] 1, and one end protrudes from the outer end surface of the load side bracket 9. 1
4, a third fitting part 14a is formed of an O ring at a fitting part 9h formed adjacent to the outer diameter surface 98 of the load side bracket 9;
It is fitted watertightly through the water seal part T415.

[With Ro,
a pump casing of a circulation pump, 14b, connected to the load side end of the frame 5 via a load side bracket) 9;
, 14c are the suction port and the discharge port of the pump casing 14, which are disposed substantially on the same axis and are substantially orthogonal to the axis of the rotor shaft 13. 14d, 14e are suction passages and discharge passages communicating with the suction port 14b and discharge port 14c, respectively, and J4f is the suction passage 14d and discharge passage 14e of B.
149 is an impeller chamber formed by the outer end surface of the load-side bracket 9 and the discharge passage ff3J4e of the pump casing 14, and 16 is a thin-walled cylinder fitted into the inner peripheral surface of the opening 14f. shaped cap, ]7 is insert)
- An impeller molded from resin attached to one end of the rotor shaft 13 via a metal fitting 18, the outer circumferential surface 17a of one end faces the inner circumferential surface of the mouthpiece 16 through a gap (7) and It is configured to rotate within the impeller chamber 149. +7b is the suction side of the impeller 17, and J7c is the discharge side of the impeller 170. ) The other end of the suction pipe (not shown) immersed in water in the water tank is connected watertightly, and the outlet 14G (ζZ) is connected to the water tank at one end of the pipe 1ζ. The other end of the discharge pipe is watertightly connected (the length is not shown). The abutting loose gate member 20 formed from synthetic rubber or the like is coupled to this buffer member 19.
1.1. : A hollow thrust bearing whose one end surface is in contact with one end surface of the load narrow cylindrical bearing 11. Next, the operation of the device constructed as described above will be explained. Cant motor operation switch 1. When fully turned on, the rotor core 12, rotor shaft 13, loose gate member 19, thrust bearing 20, and impeller 17 rotate together. When the impeller 17 rotates, the water 11 in the water tank suction pipe - suction bottom 1.4b - suction passage + 4d - open bottom part + 4f → suction side 17b → discharge side J
7c → Discharge passage 14e → Leaf outlet 14c - Leaf outlet pipe 1 piping →
The cycle repeats like an aquarium. Further, a part of the circulating water flows into or out of the inner circumference of the can 4 through the through hole 9h and lubricates the pair of bearings 6.11. The conventional cant motor of the second type is constructed as shown below.In particular, after the fitting part 5a, which is molded with a resin molding material, is machined with high precision to specified tolerances, the anti-load side is Since the coaxial bearing 6 does not have to be fitted, machining after forming the mating part 5a and fitting work for the anti-load side coaxial bearing 6 are required, which increases man-hours and costs. Attl
. [Ti of invention! ! [Summary] The invention of Otsu was made in 2017 in an attempt to eliminate such drawbacks as the 9L.In addition to molding the stator and can, the anti-load side bearing was also integrally molded (7 and the efT part of the embolus was also integrally molded). [Embodiment of the Invention] Fig. 2 shows an embodiment of the invention of B. In the figure, 6 +: 1 anti-corrosion. When molding the negative/reverse load side bearing frame 5, it is molded integrally with the fitting part 5a.Other configurations and operations are the same as those of the conventional cant motor with a canto pump device. However, this embodiment is not limited to the embodiment described above, and the explanation will be omitted. If the load-side bracket 9 does not have a through-hole 9h, and it has a sealing hole 9h sealed in the inner circumference of the can 4, it is J. "Effects of the Invention" Explanation (As shown in 7), the frame body is molded with a molding material that molds the stator and can, and also integrally molds the threaded part to which the stopper is screwed:
In the canned motor, when the frame is molded, the anti-load side bearing is also integrally molded into the anti-load side fitting hole of the frame, so that high-precision machining of the fitting hole and the anti-load side bearing are possible. This eliminates the need for mating work, which has the effect of reducing manufacturing costs.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional canned type electric circulation pump device, and FIG. 2 is a sectional view showing an embodiment of the invention of B. In the figure, 1 is a stator, 2 is a stator core, 3 is a stator winding, and 4 is a stator.
is a can, 5 is a frame body, 5a is a fitting hole, 5C is a warming part, 6
is the same bearing on the opposite load side, 8 is the embolus, 8al11' male part,
9 ([Load side bracket, 1.11 is load side bearing, 1211' rotating iron core, 13
is the rotor axis. In addition, No. 71T in the same edition is the same, : indicates a corresponding part.

Claims (1)

[Claims] A stator, a thin cylindrical can joined to the inner peripheral surface of the stator, a frame body formed by a molding material used to mold the can and the stator, and a frame body on the opposite load side of the frame body. The anti-load side bearing rotatably supports one end of the rotor shaft; When the threaded portion is integrally molded when the frame is molded, the anti-load side bearing is molded onto the inner peripheral surface of the anti-load side of the frame. A cant motor characterized by