JPH02285943A - Terminal block for terminating stator winding of motor - Google Patents

Abstract

PURPOSE:To automate termination of winding by constructing a terminal block so that pin terminals and a conductive section are connected electrically and mechanistically when a base body section provided with a plurality of pin terminals is fitted to a terminal block body section having conductive section. CONSTITUTION:A plurality of pin terminals 2 are arranged at the end section 1A of a base section 1 nearer to the inner diameter side than a slot 13, and a conductive section 9 is provided to the connector housing 7 of a terminal block body section 6. When the base section 1 is fitted to the terminal block body section 6, the pin terminals 2 are connected electrically and mechanically with the conductive section 9. Since the pin terminals 2 are arranged farther inside than the slot section, series winding can be carried out through the outside opening of stator. Furthermore, since the base section provided with the pin terminals is mounted on the stator prior to application of stator winding, winding terminal can be wound automatically around the pin terminal and connected electrically thereto thus enabling combination and electrical connection of the terminal block body section upon finish of automatic winding. By such arrangement, termination of winding can be automated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a terminal block for terminal processing of stator windings of electric motors used for driving fans of household electrical appliances.

Conventional technology In general, terminal blocks for processing stator winding terminal wires of electric motors have a non-divided structure and are provided in close contact with the upper surface of the winding terminals, and there has been no structure that can be completed after assembly using a split method. .

For this reason, after the terminal block is installed, it is practically impossible to wind or insert the windings of the stator, and it is also difficult to automate the stator winding terminal processing.

Accordingly, there has been a need for a terminal block for winding end processing of a motor that is configured to facilitate automation of stator winding winding and winding end processing.

Conventionally, as shown in FIG. 8, a terminal block for stator winding terminal processing of this type of electric motor is used to wrap a winding around a stator 1o1 and then attach the terminal block main body 103 to the upper surface of the winding terminal 102 by a method such as gluing. is fixed, winding terminal wires 106 are wound around a plurality of pin terminals 104 provided on the terminal block main body 103, and electrical connections are made by soldering, welding, or the like.

Problems to be Solved by the Invention In such a conventional configuration, the terminal block main body 103 is tightly fixed to the upper surface of the winding terminal 102 of the stator 1010, so that the terminal block main body 103 is not attached to the stator 101 until after the winding is finished. It is impossible to mount and fix the terminal block main body 103 and to electrically connect the pin terminal 104 and the winding terminal wire 106, and therefore it is impossible to automate the winding terminal processing of the stator 101.

The present invention is intended to solve these problems, and a first object of the present invention is to provide a terminal block for stator winding terminal processing of an electric motor having a configuration that allows easy automation of stator winding winding and winding terminal processing.
The purpose of The second purpose is to simultaneously automate the stator winding winding and the winding terminal connection to the pin terminals in the first purpose. The third purpose is to improve electrical safety by ensuring a stable insulation space distance between the pin terminal, which is a live part, and a non-live metal part.

The purpose of FIG. 4 is to provide mutual tracking resistance between the electrodes of the live part and to prevent insulation failure due to adhesion of foreign matter.

Means for Solving the Problems In order to achieve the first object, the first means of the present invention includes a base portion formed of an insulating material that follows the shape of the end surface of the stator core and covers the end surface. , a plurality of pin terminals provided on the inner diameter side of the stator winding portion of this base portion, and a plurality of holes into which the pin terminals are fitted, and a plurality of lead wire connections facing the holes. and a terminal block main body made of a connector housing formed of an insulating material that holds a conductive part, and when the base part and the terminal block main body are fitted, the pin terminal and the conductive part are connected to each other. The structure is such that they are electrically and mechanically connected to each other.

A second means for achieving the second object is such that a stator core slot insulating material is integrally molded on the base portion of the first means.

A third means for achieving the third object is such that the length of the pin terminal of the first means is shorter than the thickness of the portion above the base portion of the connector housing.

A fourth means for achieving the fourth purpose is that all conductive parts are made of insulating material, except for the part that makes electrical connection between the terminal in the connector housing and the pin terminal that makes electrical connection with the lead wire. The 281 conductive parts are molded, and each pole has a terminal block main body made of a conductive material integrally formed between the 281 conductive parts.

Due to the configuration of the first means, the pin terminal provided on the base section attached to the end face of the stator core is located on the inner diameter side of the slot section that accommodates the stator winding, so that the above-mentioned fixation is performed by the flyer winding machine. Direct winding is possible from the outer diameter side opening of the child.
In addition, since the base section with the pin terminals is molded and attached to the stator before the stator winding work, the winding terminal wires (the starting and ending ends of the stator windings) are automatically attached to the pin terminals. Winding and electrical connection are possible, and after the automatic winding or electrical connection is completed, the terminal block main body can be assembled and electrical connection can be made, making it possible to automate winding terminal processing. It will be possible.

With the configuration of the second means, the base portion made of an insulating material and the slot insulating material of the stator core are integrally molded in a single molding die, thereby winding the stator winding. The accuracy of the position of the base section, that is, the position of the pin terminal mounted on the base section, is improved with reference to the position of the slot to be mounted.

With the configuration of the third means, even if the height of the pin terminals planted in the base part after fixing is different, the thickness will be lower than the thickness of the connector housing attached to the base part, so that the non-current-carrying metal part This will ensure an insulated space distance with a certain motor housing.

With the configuration of the fourth means, the conductive part of the terminal block main body is other than the exposed part inside the connector housing that makes electrical connection with the Hiji Line and the exposed part that makes electrical connection with the pin terminal of the base part. Since all of the conductive parts are molded with insulating resin, adhesion of moisture and foreign matter to the conductive parts is minimized, and problems caused by poor tracking and poor insulation between the electrodes of the conductive parts can be prevented. It turns out.

Embodiment First, an embodiment according to the first means of the present invention will be described based on FIGS. 1 to 6.

In the figure, a base portion 1 formed of an insulator is identified as being in contact with one side of a stator core 3, and its contact surface follows the planar shape of the stator 3.

The central portion, which is not a contact surface, has a diameter that allows the end of the rotor (not shown) to escape, and has a cylindrical shape with the end 1A closed at a height approximately equal to the coil end of the stator winding 4. End 1
A has a plurality of pin terminals 2 embedded in its outer circumferential band. Then, the winding terminal wire 6, which is the start or end of the stator winding 4 wound around the stator core 3 via the base portion 1 and an insulating material (not shown) in the slot, is connected to the pin terminal. It is wound around 2. The terminal block main body part 6, which together with the base part 1 constitutes a terminal block for stator winding terminal processing, includes a connector housing 7 having a conductive part 9 for electrical connection with the Hiji wire, and a plurality of pins on the end part 1A. It has a plurality of holes 8 into which the terminals 2 are fitted, and a conductive portion 9 is exposed inside the holes 8 and comes into contact with the plurality of pin terminals 2 to be electrically connected.

In the above configuration, the pin terminal 2 of the base part 1 is connected to the stator winding 4 by series winding from the outer peripheral side opening 12 of the stator core 3 using a winding guide jig 11 using a flyer winding machine 10. Since it is located on the inner diameter side of the slot 13 where the terminal block main body 6 is installed, the stator winding 4
Automatic winding of the winding wire 6Q can be performed automatically, and then electrical connection by automatic winding of the winding terminal wire 6Q to the pin terminal 2 and soldering etc. can be easily performed. After completing the series winding of the stator winding 4 and the electrical connection, the terminal block main body part 6 is connected to the pin terminal 2 of the base part 1.
By fitting the conductive part 9 exposed inside the hole 8 of the terminal block main body part e and the pin terminal 2 of the base part 1 by soldering or other electrical connection, the electrical connection with the Hiji Line is established. A terminal block for stator winding terminal processing with a connection function is completed.

Next, an embodiment according to the second means of the present invention is shown in FIGS.
This will be explained based on FIG. In the figure, a base part 1 made of an insulating material has a plurality of pin terminals 2, and the pin terminals 2 are connected to each other via an insulating material 14 in a slot 13 that is integrally formed with the base part 1. Stator winding 4 wound with
The starting end and the ending end, that is, the winding terminal 6, are wound. Furthermore, the exposed portions of the conductive portions 9 are located inside the plurality of holes 8 provided in the terminal block main body portion 6, which constitutes the terminal block for stator winding end processing together with the base portion 1. It is configured by electrically connecting with.

In the above configuration, the pin terminal 2 is fixed by press-fitting into a hole provided on the base part 1 which is integrally molded with the insulating material 14 of the slot 13, so that the stator winding 4 is fixed. With respect to the position of the slot 13 to be wound,
The pin terminals are fixed with extremely high precision. After aligning the position of this pin terminal 2 with the hole position provided in the terminal block main body part 6, the combination is mounted, and the pin terminal 2 and the terminal block main body part 6 are assembled.
It is electrically connected to and fixed to the exposed part of the conductive part 9 inside the hole 8.

An embodiment of the third means will be described based on FIGS. 1 and 7. In the figure, a base part 1 attached to a stator fixed to the inner surface of a motor housing 15 is made of an insulating material, and a stator winding 4 is wound around a stator core 3 through an insulating material. It has a plurality of pin terminals 2 around which winding terminal wires 5 are wound, and the conductive part 9 of the terminal block main body part 6 is
It is electrically connected to the pin terminal 2. Further, the spatial distance between the motor housing 16 and the pin terminal 2 is a spatial distance B between the motor housing 16 and the top surface of the terminal block main body 6, and a spatial distance A between the top surface of the terminal block main body 6 and the pin terminal 2. The sum (A-1-B) is obtained. That is, the top surface of the terminal block main body e is always higher than the top surface of the pin terminal 2.

In the above configuration, the spatial distance (A+B
), even if the fixed position of the stator core 3 to the inner surface of the motor housing 16 changes and the uppermost surface of the terminal block main body 6 contacts the inner surface of the motor housing 16, the upper end surface of the pin terminal 2 and the motor housing 15 is a spatial distance A, and by always setting the uppermost surface of the terminal block main body 6 higher than the uppermost surface of the pin terminal 2, it is ensured that the distance is one foot or more regardless of assembly accuracy.

An embodiment of the fourth means will be described based on FIGS. 3 and 4. In the figure, a base part 1 made of an insulating material has a plurality of pin terminals 2, and the starting end of a stator winding 4, which is wound around a stator core 35 via an insulating material, is attached to the pin terminals 2. And the termination, that is, the winding terminal wire 5 is wound. Further, the terminal block main body part 6, which together with the base part 1 constitutes a terminal block for stator winding terminal processing, includes a connector housing T having a conductive part 9 for electrical connection with the Hiji wire, and a connector housing T into which the pin terminal 2 is inserted. The exposed portion of the conductive portion 9 inside the hole 8 is configured to be electrically connected to the plurality of pin terminals 2.

Further, the two exposed portions of the conductive portion 9 are integrally formed for each pole, and the portions between the respective pole tiles are electrically insulated.

In the above configuration, the conductive part 6 of the terminal block main body part 6 includes a plurality of exposed parts that make electrical connections with the lead wires 6 within the connector housing 7, and a plurality of pin terminals 2 mounted on the base part 1. All parts other than the exposed parts that make electrical connections are molded with insulating material to prevent moisture and other foreign matter from adhering.

Effects of the Invention As is clear from the above embodiments, according to the present invention, the terminal block for stator winding terminal processing is divided into a base portion provided with pin terminals and a terminal block body portion provided with a connector housing. ,
Since the connector housing is connected electrically and mechanically when the connector housing is attached after the stator winding is wound, it is possible to automate the winding of the stator winding and winding terminal processing, which improves process efficiency. Stable improvement of quality can be achieved.

In addition, by integrally molding the base part of the terminal block for stator winding terminal processing and the insulating material of the stator core slot, the base part based on the position of the slot in which the stator winding is wound is made. The accuracy of the position of the base, that is, the position of the plurality of pin terminals attached to the base is improved, and the process of winding the winding end wire around the pin terminal can be easily automated.

In addition, by making the pin terminal height of the base part of the terminal block for stator winding terminal processing always lower than the top surface of the terminal block main body, the height of the pin terminal, which is a live part, and the non- live metal part. Since the spatial distance between the motor housing and the motor housing can be ensured without being affected by assembly accuracy, electrical safety is improved.

Furthermore, all conductive parts of the terminal block main body of the terminal block for stator winding terminal processing are made of insulating material, except for the exposed parts inside the connector housing and the exposed parts that make electrical connections with the pin terminals. By molding and integrally configuring the exposed portions for each pole, poor tracking and poor insulation between the respective poles of the conductive portion due to the passage of time after use can be suppressed, thereby improving durability.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a terminal block for winding end treatment installed on a stator, showing an embodiment of the first means of the present invention; FIG. 2 is a plan view of the same embodiment installed on a stator; Fig. 3 is a plan view of the terminal block of the same embodiment, Fig. 4 is a side sectional view of the winding state of the same embodiment,
Fig. 5 is a plan view of the coil winding state of the same embodiment, and Fig. 6 is a cross-sectional view of the main part of the insulating material of the stator slot of the terminal block for winding end treatment showing the embodiment of the second means. , FIG. 7 is a sectional view of the relationship between the terminal block for winding end processing and the motor housing, showing an embodiment of the third means, and FIG. 8 is a sectional view of a conventional terminal block for winding end processing. . 1...Base part, 2...Pin terminal, 4...
...Stator winding, 6... Winding wire, terminal wire,
6... Terminal block main body part, 9... Conductive part,
14... Insulating material. Name of agent: Patent attorney Shigetaka Awano and one other person.

Claims (4)

[Claims] (1) A base part formed of an insulating material that follows the shape of the end face of the stator core and covers the end face, and a plurality of pin terminals provided on the inner diameter side of the stator winding part of this base part. , a terminal block body comprising a connector housing formed of an insulating material and having a plurality of holes into which the pin terminals are fitted and holding a plurality of conductive parts for connecting lead wires facing the holes; Prepare,
The terminal block for stator winding terminal processing of a motor, in which the pin terminal and the conductive part are electrically and mechanically connected to each other when the base part and the terminal block main body part are fitted. (2) The terminal block for processing stator winding ends of a motor according to claim 1, wherein the slot insulating material of the stator core is integrally molded on the base portion. (3) The terminal block for stator winding end processing of a motor according to claim 1, wherein the length of the pin terminal is shorter than the thickness of the portion on the base portion of the connector housing. (4) All conductive parts are molded with insulating material, except for the exposed part in the connector housing that makes electrical connection with the lead wire and the exposed part that makes electrical connection with the pin terminal, and Claim 1: A terminal block main body made of a conductive material is integrally formed for each pole between the exposed parts of the terminal block.
Terminal block for stator winding terminal processing of the motor described above.