JPS59103539A - Canned motor - Google Patents

Abstract

PURPOSE:To reduce the size of a canned motor by forming a shoulder having a plurality of screw inserting holes on the opposite load side of a frame, and engaging a bracket through threads cut on the engaging surface of the bracket to be engaged with the inside of the shoulder and engaging a bearing with the bracket. CONSTITUTION:The end of the opposite load side of a frame 5 formed by molding a stator core 2, a stator winding 3 and a can 4 with a molding material is extended in L shape in section to for a shoulder 5d. A plurality of screw inserting holes 5f are circumferentially formed on the shoulder 5d. A plurality of metals 9 are buried in the contacting surface of the opposite load side bracket 7 contacted with the inside of the shoulder, threads are cut, and the bracket 7 is secured to the shoulder 5d of the frame through the threads 8. An O-ring 7c is inserted between the bracket 7 and the can 4, a bearing 9 is engaged with the large-diameter part 7e of the bracket and a shaft 16 is rotatably supported. A plug 10 is screwed into the small-diameter part 7f of the bracket through the O-ring 10a. In this manner, the bracket of the opposite load side is reduced in size and weight, thereby reducing the cost.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention (1) is a frame molded with a molding material such as resin, which is used as a drive source of, for example, a canned type electric circulation pump device, and is used to mold a stator. This invention relates to an improvement of a cant motor with a body.

[Prior art]

A conventional cant motor of type Otsu will be explained according to the fJs1 diagram. In the figure, 11, a stator core 2; a stator consisting of a fixed pre-winding 93 with ζ winding; Can 5 is a hollow frame molded with a molding material such as resin for molding the stator 1, and has a fitting part 5B formed on the opposite load side and a larger diameter than the inner circumferential surface of the end on the load side. A fitting portion 5b having a small diameter and a fitting portion 5C having a small diameter are provided.6
When the frame body 5 is molded, they are inserted at equal intervals on the same circumference of the outer circumferential part concentric with the fitting part 5a. 7; The fitting portion 7a is fitted into the fitting portion 5a, and the flange portions 7b are arranged in a plurality f17.
1 is a bolt 8 screwed into the metal body 6 of No. 1 with a large thread, 1 is an anti-load side bracket connected to the end surface of the anti-load side of the frame 5, and 7C is a boss portion 7d of the anti-load side bracket 7 of B. 7e is a stepped through hole formed in the inner peripheral surface of the boss portion 7d, and 7F is a Q formed in the middle of the stepped through hole 7e. The first water surface 1 consists of an 0 ring in which the 9 fitting part, 8: is fitted into the annular groove 7C.
The member is watertightly pressed against the inner peripheral surface of the can 4 on the anti-load sidej7
Tesh)ro.

9 is a co-bearing on the opposite load side fitted in the stepped through hole 7e, 10
A third water seal member 1 in which the threaded part lOa is attached to the threaded part 7f and the flange part JOb is an O-ring.
1 is pressed against the shoulder of the stepped through hole 7e to form the stepped through hole 7e.
A plug (12) whose outer diameter surface is loosely fitted into the large-diameter fitting portion 5b, and which is formed on the inner circumferential side (i) and the fitting portion 12a
is fitted into the small-diameter fitting portion 5C, and the load side bladder, I
- An annular groove 12c is formed on the outer circumferential surface of the boss part +2b, and an axial through hole J2 is formed in the center of the boss part 12b.
d is formed.

12e is an annular fitting part formed on one end side of the load side bracket 12; 13 is a second water seal member made of an O ring fitted in the annular groove J2c; It is watertightly pressed. 14 is a load-side coaxial bearing fitted into the through hole +2d; 15 is a rotor core that pairs with the stator core 2; 16 is a rotor shaft fitted into the inner peripheral surface of the rotor core 15; It is rotatably supported by a pair of coaxial bearings 9 and 14.

17 is an IylPB member molded from synthetic rubber or the like that is fitted onto the rotor shaft 16, and one end surface is in contact with one end surface of the rotor core 15. 1 and 18 are coupled to the buffer member 17.
It is a Nilast bearing, and one end surface is in contact with one end surface of the load-side co-bearing 14. ] 9 is a liquid filled in the inner circumferential part of the can 4, which is made of fresh water or the like.
Explain how things work. When the operation switch of the canto motor is turned on, the rotor core 15, rotor shaft 16, buffer member 17, and thrust bearing 18 rotate together, and the sealed liquid 19 rotates.
is stirred. Stirred filled liquid 19 and a pair of coaxial bearings 9
, 14 and the thrust bearing 18.

The conventional cant motor of this type is as explained above.
In particular, the flange portion 7b of the anti-load side bracket 7 is configured so that the anti-load a! Since the inserts are inserted into the metal body 6 and each metal body 6 is connected to the metal body 6 by bolts 8, the counter-load side bracket 7 becomes large. Furthermore, since a plurality of metal bodies 6 are inserted into the frame 5 and the anti-load side bracket 7 has a flange portion 7b, the angle of the axial direction of the frame 5 becomes large and the flange portion 7b is The dimension of the frame body 5 in the axial direction becomes larger due to the combination of the outer end surface of the frame body 5 and the outer end surface of the frame body 5 on the opposite load side. In addition, since the diameter of the fitting portion 5a of the frame 5 with the anti-load side bracket 7 is large, it requires machining due to poor precision of the fitting diameter unless molded, resulting in high cost. was there.

[Summary of the invention]

Party B's invention was not intended to eliminate the same drawbacks as Party B's.
``In order to create a small diameter through hole in the axial direction that communicates with the center of the shoulder and the center of the shoulder on the anti-load side of the frame body, insert the small diameter part of the hollow anti-load side bracket into One end surface into which a plurality of metal bodies are inserted, which fit into the through-hole and have the outer diameter surface of the large diameter part of the anti-load side bladder/bottom facing the inner circumferential surface of the can, and have female threads carved therein. in contact with the shoulder,
The present invention is characterized by a frame body and an anti-load side bladder/bottom connected to each other by a buffer member screwed onto a plurality of metal bodies.

[Embodiments of the invention]

2nd VI is a sectional view showing an embodiment of the present invention. In the figure, 5d is a shoulder formed on the anti-load side of the frame body 5, 5e is four small-diameter holes communicating at right angles to the center of the shoulder 5d, 7 is a bracket on the anti-load side, and 7g is a shoulder on the opposite side of the frame 5. A small diameter portion formed at one end of the anti-load side bracket 7 is fitted into a small diameter through hole 5e. 7h load side bladder) 1.
A large diameter portion formed at the other end of 7 faces the inner peripheral surface of the can 4 on its outer diameter surface, and a plurality of metal bodies 6 are provided with counter threads engraved therein.
One end surface, which is inserted on the same circumference, is in contact with the shoulder portion 5d. Note that when the counter-load side co-bearing 9 is fitted into the stepped through hole 7e of the counter-load side bracket 7, no.
In the middle part, there is formed a joint part 7, which is formed by the spine and the spine. multiple metal objects [;
ILI! It is arranged to correspond to the rice. Reference numeral 8 denotes a fastening member consisting of a plurality of bolts, which pass through the through-holes 5r on multiple sides and are attached to the metal body 6 of the I type, and connect the opposite-load side plug socket 7 to the shoulder portion 5d of the frame body 5. is combined with

Other configurations and operations (as they are similar to those of the conventional can 1' mode) will not be described.

〔Effect of the invention〕

As explained above, this invention has a small IY through hole in the axial direction communicating with the center of the shoulder and the shoulder on the anti-load side of the frame body, and a small IY through hole on one end side that is fitted into the small IY through hole. At the same time, there is a small-diameter portion in which a mating portion is formed on the inner circumferential surface, and a double diameter portion on the other end side, the diameter surface of which faces the inner circumferential surface of the can, and a screw thread is engraved. A metal body is inserted into the frame, and one end surface of the bracket is in contact with the shoulder, and the inner peripheral surface is a large-diameter portion that rotatably supports one end of the rotor shaft. Since the frame body and the anti-load side bracket are fastened together using a plurality of fastening members that penetrate through the anti-load side of the frame body and are attached to a plurality of metal bodies, the frame body and the anti-load side bracket are fastened together. It will become very small and the length of the axis of the aircraft will be shortened. In addition, the diameter of the fitting hole for the bracket on the opposite load side of the frame body is significantly reduced.Secondly, the precision during molding is improved, so no machining is required, which reduces manufacturing costs and improves the machine body. It has the effect of being smaller and lighter.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a conventional cant motor, and FIG. 2 is a sectional view showing an embodiment of the present invention. In the figure, 1 is a stator, 4 is a can, 5 is a frame, 5d is a shoulder, 5elfl1 through hole, 5f1. multiple through holes,
6 is multiple metal bodies, 7 is the anti-load side plug, bottom, 7g
7h is the small diameter part, 7h is the large part, 7f is the rainbow part, 9 is the anti-load side bearing, 0 is the embolus, and 16 is the rotor shaft. In addition, the middle part of each figure and the arrow are the same or equivalent parts. Figure 1 Figure 2

Claims (1)

[Claims] A stator, a frame molded with the molding material used to mold the stator B, and provided with a circular hollow part having a shoulder on one end side and a through hole in the axis x direction communicating with the center of the shoulder part. The body is joined to the inner peripheral surface of the stator, one end of which has a threaded part formed on the inner peripheral surface is fitted into the through hole, and the outer diameter surface of the other end is connected to the inner peripheral surface of the can. One end surface facing the circumferential surface and into which a plurality of metal bodies with female threads are inserted abuts the shoulder, and rotatably supports one end of the rotor shaft on the inner circumferential surface. an anti-load side bracket, an embol that is attached to the threaded portion and closes the through hole by pressing a water seal member between it and the end surface of the one end portion; and an embol that is threaded onto the plurality of metal bodies, respectively frame body and anti-load side bracket)
- A canto motor comprising a plurality of fastening members that connect the.