WO2017107538A1 - Terminal base assembly for aluminium wire winding and motor - Google Patents

Abstract

Disclosed are a terminal base assembly (400) for an aluminium wire winding (300) and a motor. The terminal base assembly (400) for the aluminium wire winding (300) comprises a terminal base (1) and a plurality of wiring terminals (2), wherein the terminal base (1) is provided with terminal slots (11) for the insertion of the wiring terminals (2), each terminal slot (11) is provided with two opposite slot walls (12), and the slot walls (12) are provided with lead holes (121) for the penetration of a lead (301) of the aluminium wire winding (300); the wiring terminals (2) are provided with wire-fastening grooves (211) used for fastening the lead (301) of the aluminium wire winding (300), the wire-fastening grooves (211) are connected to the lead holes (121), glue guide grooves (122) are provided in mating faces of the wiring terminals (2) with the slot walls (12) and mating faces of the slot walls (12) with the wiring terminals (2), and the glue guide grooves (122) surround the lead (301), and are in communication with the lead holes (121) and the terminal slots (11). The terminal base assembly (400) for the aluminium wire winding (300) can effectively prevent a conductor-exposing portion of the aluminium wire winding (300) from being oxidised.

Description

 Terminal block assembly and motor for aluminum wire winding

Technical field

The present invention relates to the field of motor technology, and in particular to a terminal block assembly for an aluminum wire winding and a motor.

Background technique

At present, the motor industry is highly competitive. In order to reduce costs, the industry has changed the motor winding from copper to aluminum. The aluminum enameled wire used in the motor winding firstly needs to break the insulating varnish on the surface of the aluminum enamel wire to make electrical connection at the joint with the external power supply. Secondly, measures need to be taken to prevent the exposed portion of the aluminum enamel wire from being oxidized and prevent the joint. The aluminum enameled wire is oxidized and causes a motor failure, such as a shutdown or fire.

In order to destroy the insulating varnish on the surface of the aluminum enamel wire, the aluminum enamel wire is generally removed by using a card slot on the copper terminal and using a wire slot with a groove width smaller than that of the aluminum enamel wire to be stuck with the aluminum enamel wire. Insulating paint. At the same time, in order to isolate the air and prevent the core of the exposed aluminum enameled wire from being oxidized, the glue for packaging is filled in the terminal slot into which the terminal is inserted.

The insulating frame of the existing motor stator is provided with a terminal block, and the terminal slot is disposed on the terminal block, and the terminal is elastically matched with the groove wall of the terminal slot to be fixed. However, the exposed surface of the aluminum enamel wire pierced by the terminal is often adjacent to the mating surface between the terminal and the groove wall of the terminal groove. Moreover, a small gap is likely to occur due to the mating surface. Due to the tension of the liquid, the glue poured into the terminal groove cannot fill the small gap at the mating surface, so that after the glue is solidified, the exposed portion of the aluminum enamel line adjacent to the mating surface is still oxidized.

Summary of the invention

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a terminal block assembly for an aluminum wire winding, which is intended to provide a terminal block assembly that can effectively prevent oxidation of a joint of an aluminum enamel wire.

In order to achieve the above object, a terminal block assembly for an aluminum wire winding according to the present invention includes a terminal block and a plurality of terminal blocks, wherein the terminal block is provided with a terminal slot for inserting the terminal, the terminal slot has a relative Two slot walls, the slot wall is provided with lead holes for the aluminum wire winding leads;

The terminal is provided with a card slot for engaging with a lead of the aluminum wire winding, the wire slot is butted with the lead hole, a mating surface of the terminal and the groove wall, and/ Or a matching groove is formed on the mating surface of the groove wall and the connecting terminal, and the glue guiding groove surrounds the lead wire and communicates with the wire passing hole and the terminal slot.

Preferably, the terminal comprises a first card, a second card, and a connecting plate connecting the first card and the second card, the card slot is opened on the first card The board and the second card board.

Preferably, the connecting plate is connected to an end of the first card and the second card, and the connecting plate is provided with a wire hole that communicates with the cable slot, the wire hole The width is greater than the width of the card slot.

Preferably, the wire hole is formed with a guiding surface at the entrance of the wire slot.

Preferably, a bottom of the terminal slot is provided with a positioning post, the positioning post is disposed in the wire hole, and a top of the positioning post is flush with a bottom of the lead hole.

Preferably, the glue guiding groove is disposed on the groove wall, and the glue guiding groove and the lead hole are all opened in the pulling direction of the terminal.

Preferably, the inner wall surface of the first card board and/or the second card board is provided with a card spring piece, and the card spring piece is at an angle with the corresponding first card board or the second card board. And the clip spring piece extends along the insertion direction of the terminal.

Preferably, the end of the clip is extended with a lug in a direction close to the corresponding first or second card.

Preferably, the side faces of the first card board and/or the second card board are provided with barbs.

The invention also provides a motor comprising a terminal block assembly of the aluminum wire winding, the terminal block assembly of the aluminum wire winding comprises a terminal block and a plurality of terminal blocks, wherein the terminal block is provided with the terminal block The terminal slot has two opposite slot walls, and the slot wall is provided with a lead hole for the aluminum wire winding lead to pass through;

The terminal is provided with a card slot for engaging with a lead of the aluminum wire winding, the wire slot is butted with the lead hole, a mating surface of the terminal and the groove wall, and/ Or a matching groove is formed on the mating surface of the groove wall and the connecting terminal, and the glue guiding groove surrounds the lead wire and communicates with the wire passing hole and the terminal slot.

The terminal block assembly of the aluminum wire winding of the present invention is provided with a glue guiding groove by using a lead wire hole adjacent to the mating surface of the terminal block and the groove wall, so that when the glue is poured into the terminal groove, the glue guiding groove can be simultaneously poured to make the glue The lead portion of the aluminum wire winding can be sufficiently filled to remove the bare core portion after the insulating varnish, and residual air is generated adjacent to the bare core, thereby effectively preventing oxidation of the lead die portion of the aluminum wire winding.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and those skilled in the art can obtain other drawings according to the structures shown in the drawings without any creative work.

1 is a schematic structural view of an embodiment of a terminal block assembly for an aluminum wire winding according to the present invention;

Figure 2 is a partial enlarged view of a portion A in Figure 1;

3 is a top plan view of the terminal block assembly of the aluminum wire winding of FIG. 1;

Figure 4 is a partial enlarged view of B in Figure 3;

Figure 5 is a cross-sectional structural view taken along line V-V of Figure 3;

Figure 6 is a partial enlarged view of a portion C in Figure 5;

Figure 7 is a schematic structural view of the insulating frame of Figure 1;

Figure 8 is a partial enlarged view of the portion D in Figure 7;

Figure 9 is a schematic structural view of the terminal of Figure 1;

Figure 10 is a partial structural view of the motor of the present invention.

Description of the reference numerals:

Label	name	Label	name	Label	name
1	Terminal Block	twenty one	First card board	241	Lug
11	Terminal slot	211	Card slot	100	stator
12	Slot wall	212	Barb	200	Insulating frame
121	Lead hole	twenty two	Second card board	300	Aluminum wire winding
122	Squeezing tank	twenty three	Connection plate	301	Winding lead
123	Overflow trough	231	Wire hole	400	Terminal block assembly
13	Positioning column	232	Guide surface
2	Terminals	twenty four	Card spring

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It should be noted that all directional indications (such as up, down, left, right, front, back, ...) in the embodiments of the present invention are only used to explain between components in a certain posture (as shown in the drawing). Relative positional relationship, motion situation, etc., if the specific posture changes, the directional indication also changes accordingly.

In addition, the descriptions of "first", "second", and the like in the present invention are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In addition, the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. It is also within the scope of protection required by the present invention.

The terminal block assembly 400 of the aluminum wire winding proposed by the present invention, referring to FIG. 1 , FIG. 2 , and FIG. 7 to FIG. 10 , in one embodiment, the terminal block assembly 400 of the aluminum wire winding comprises a terminal block 1 and a plurality of The terminal block 1 is provided with a terminal slot 11 for the terminal 2 to be inserted. The terminal slot 11 has two opposite slot walls 12, and the slot wall 12 is provided with a lead hole for the lead wire of the aluminum wire winding 300. 121;

The terminal 2 is provided with a wire slot 211 for engaging with the lead of the aluminum wire winding 300. The wire slot 211 is butted with the lead hole 121, the mating surface of the terminal 2 and the groove wall 12, and/or the groove wall 12 is The mating surface of the terminal 2 is provided with a glue guiding groove 122, and the glue guiding groove 122 surrounds the winding lead 301 and is connected through the wire hole 121 and the terminal groove 11.

In the present embodiment, the terminal block 1 is generally supported by an insulating material and integrally molded with the insulating frame 200 of the motor. The terminal 2 is supported by a metal or alloy material which is excellent in oxidation resistance or whose oxide conductivity is not significantly lowered. Preferably, the terminal 2 of the present embodiment is made of copper.

The terminal slot 11 is mainly configured to fix the terminal 2 and hold the sealing glue. When assembling, the terminal 2 is first inserted into the terminal slot 11, and the terminal 2 is elastically matched with the slot wall 12; then, the terminal slot 11 is The glue is poured therein to fill the filter portion of the lead of the aluminum wire winding 300 to prevent the portion from being oxidized by the air.

The lead hole 121 may be a closed through hole, such as a circular hole; or a slot opening in a certain direction to facilitate assembly of the lead of the aluminum wire winding 300, it being understood that in order to prevent uncured glue in the terminal groove 11 For the leak, the opening of the lead hole 121 should be provided at the top of the groove wall 12.

It can be understood that the width of the card slot 211 is smaller than the wire diameter of the lead of the aluminum wire winding 300 to smoothly damage the insulating paint on the surface of the lead. In order to enhance the damage effect of the card slot 211 on the insulating paint on the lead surface, the inner wall surface at the entrance of the card slot 211 may be provided as a frosted surface.

After the lead terminal 2 is assembled, the glue guiding groove 122 should remain in communication with the vacant portion of the terminal slot 11 to ensure that the glue poured into the terminal slot 11 can smoothly flow into the glue guiding groove 122. Of course, other prevention can also be adopted. The glue is injected into the glue introduction tank 122. The glue introduction groove 122 can be opened on the lead terminal 2 or the groove wall 12, depending on the specific process.

The terminal block assembly 400 of the aluminum wire winding of the present invention is provided with the glue guiding groove 122 by using the adjacent lead hole 121 at the mating surface of the terminal 2 and the groove wall 12, so that when the glue is poured into the terminal groove 11, the glue guiding groove 122 It can be filled at the same time, so that the glue can be fully filled to the lead portion of the aluminum wire winding 300 after the insulating varnish is removed, and residual air is generated adjacent to the bare core, thereby effectively preventing the lead wire of the aluminum wire winding 300. Part of the oxidation.

Further, referring to FIG. 5, FIG. 6, and FIG. 9, in an embodiment, the terminal 2 includes a first card 21, a second card 22, and a first card 21 and a second. The connecting plate 23 of the card board 22 and the card slot 211 are formed on the first card board 21 and the second board board 22.

In this embodiment, the first card board 21 and the second card board 22 are disposed in parallel, and the connection board 23 can be connected to the middle of the first card board 21 or the second card board 22, or the end portions connected to the same side of the two sides. As long as the clamping of the lead of the aluminum wire winding 300 and the plugging of the external power supply line are not affected.

Further, the connecting plate 23 is connected to the end of the first card 21 and the second card 22 on the same side, and the connecting plate 23 is provided with a wire hole 231 communicating with the wire slot 211, and the width of the wire hole 231 is larger than The width of the card slot 211.

In this embodiment, it can be understood that when the connecting plate 23 connects the ends of the first card 21 and the second card 22 on the same side, the terminal 2 can be made by using a sheet metal stamping and bending process. At the same time, in order to achieve elastic contact with the groove wall 12 and convenient assembly, the distance between the first card plate 21 and the second card plate 22 can be tapered along the insertion direction of the terminal 2 .

Further, the wire hole 231 is formed with a guide surface 232 at the entrance of the wire groove 211, so that, even when the wire groove 211 is not well aligned with the lead of the aluminum wire winding 300, the wire can be placed at the time of assembly. The action of the guide surface 232 slides down into the wire slot 211.

Further, referring to FIG. 5 to FIG. 8 , in an embodiment, in order to position the lead wires and ensure that the lead wires are well matched with the card slot 211 , the bottom of the terminal slot 11 is provided with a positioning post 13 , and the positioning post 13 is disposed in the through line. The hole 231 is inside, and the top of the positioning post 13 is flush with the bottom of the lead hole 121. In the present embodiment, it can be understood that during the assembly process of the terminal 2, the terminal 2 acts on the lead of the aluminum wire winding 300 to exert a force in the insertion direction, and in the case where the lead rigidity is insufficient, the lead wire Bending is extremely prone to occur, and during this process, the positioning post 13 can hold the lead. In addition, the positioning post 13 can also prevent the positioning terminal from shaking by being inserted into the through hole 231.

Preferably, the top of the side wall between the adjacent two terminal slots 11 is provided with an overflow groove 123 for facilitating the flow of the glue filled between the terminal slots 11.

Further, the glue introduction groove 122 is disposed on the groove wall 12, and the glue introduction groove 122 and the lead hole 121 are both opened in the direction in which the terminal 2 is pulled out.

In this embodiment, the glue can be poured into the glue guiding groove 122 along the top of the glue guiding groove 122, and the lead wire of the aluminum wire winding 300 can be inserted and inserted along the opening in the length direction of the lead hole 121, and the assembling operation is simpler and more flexible. In the embodiment in which the lead terminal 2 is formed of a sheet metal member, the placement of the glue guiding groove 122 on the groove wall 12 can reduce the process cost.

Further, referring again to FIG. 5, FIG. 6, and FIG. 9, in an embodiment, the inner wall surface of the first card board 21 and/or the second card board 22 is provided with a snap spring piece 24, and the card spring piece 24 is provided. It is at an angle with the corresponding first card plate 21 or second card plate 22, and the card spring piece 24 extends along the insertion direction of the terminal block 2.

In this embodiment, it can be seen from FIG. 9 that the first card board 21 is provided with a card spring piece 24, and the card spring piece 24 is disposed at an angle with the first card board 21, and is adjacent to the connecting board 23. The direction extends. In this way, when the external power cable is connected to the terminal 2 of the embodiment, the external power cable is first inserted into the area between the card spring 24 and the second card 22 and abuts the card spring 24; the external power cable continues to approach. The direction of the connecting plate 23 is inserted, and the retaining spring 24 is elastically deformed, and the free end thereof moves toward the first card 21; the external power cable is assembled and the second card 22 and the retaining blade 24 are elastic. Abut.

Further, in order to prevent excessive deformation of the clip spring 24, the end of the clip spring 24 is extended with a lug 241 in a direction approaching the corresponding first card 21 or second card 22.

Further, in order to prevent loosening of the terminal 2 after insertion into the terminal groove 11, the side end faces of the first card 21 and/or the second card 22 are provided with barbs 212.

The present invention also provides a motor comprising a terminal block assembly 400 of aluminum wire windings. The specific structure of the terminal block assembly 400 of the aluminum wire winding is described with reference to the above embodiments, since the present motor adopts all the technical solutions of all the above embodiments. Therefore, at least all the beneficial effects brought by the technical solutions of the above embodiments are not repeated herein.

In this embodiment, specifically, the motor further includes a stator 100, an insulating frame 200, and an aluminum wire winding 300. The insulating frame 200 is disposed at an end of the stator 100, and the aluminum wire winding 300 is wound and embedded in the insulating frame 200 and the stator. 100.

When assembled, the winding lead 301 of the aluminum wire winding 300 is first passed through the lead hole 121, and then the terminal 2 is inserted into the terminal slot 11; the wire slot 211 of the terminal 2 is docked with the winding lead 301, and is assembled in place. The winding wire 301 is engaged with the winding lead 301, and the insulating paint card slot 211 on the winding lead 301 is detached or punctured by friction, and the winding lead 301 is electrically connected to the last matching portion of the wire slot 211.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structural transformation, or direct/indirect use, of the present invention and the contents of the drawings are used in the inventive concept of the present invention. It is included in the scope of the patent protection of the present invention in other related technical fields.

Claims (20)

1. A terminal block assembly for an aluminum wire winding, comprising a terminal block and a plurality of terminal blocks, wherein the terminal block is provided with a terminal slot for inserting the terminal block, the terminal slot having opposite two groove walls, a lead hole for the aluminum wire winding lead to be provided on the groove wall;

   The terminal block is provided with a card slot for engaging with a lead of the aluminum wire winding, and the card slot is butted with the lead hole, wherein the terminal is matched with the slot wall The surface, and/or the mating surface of the groove wall and the terminal, is provided with a glue guiding groove, the oil guiding groove surrounding the lead wire and communicating the wire hole and the terminal groove.
2. The terminal block assembly for an aluminum wire winding according to claim 1, wherein said terminal comprises an opposite first card, a second card, and said first card and said second card The connecting board, the card slot is opened on the first card board and the second card board.
3. The terminal block assembly for an aluminum wire winding according to claim 2, wherein the inner wall surface of the first card plate and/or the second card plate is provided with a snap spring piece, and the card spring piece and the corresponding The first card or the second card has an angle, and the card spring extends along the insertion direction of the terminal.
4. The terminal block assembly for an aluminum wire winding according to claim 3, wherein the end portion of the retaining spring piece is provided with a lug extending in a direction approaching the corresponding first or second card plate.
5. A terminal block assembly for an aluminum wire winding according to claim 2, wherein a barb is provided on a side end surface of said first card plate and/or said second card plate.
6. The terminal block assembly for an aluminum wire winding according to claim 2, wherein the connecting plate is connected to an end of the first card and the second card, and the connecting plate is provided And connecting the wire hole of the card slot, wherein the width of the wire hole is greater than the width of the wire slot.
7. The terminal block assembly for an aluminum wire winding according to claim 6, wherein a circlip is provided on an inner wall surface of the first card plate and/or the second card plate, and the card spring piece and the corresponding The first card or the second card has an angle, and the card spring extends along the insertion direction of the terminal.
8. The terminal block assembly for an aluminum wire winding according to claim 7, wherein the end portion of the retaining spring piece is provided with a lug extending in a direction approaching the corresponding first or second card plate.
9. A terminal block assembly for an aluminum wire winding according to claim 6, wherein a barb is provided on a side end surface of said first card plate and/or said second card plate.
10. A terminal block assembly for an aluminum wire winding according to claim 6, wherein said wire passing hole is formed with a guide surface at an entrance of said wire groove.
11. The terminal block assembly for an aluminum wire winding according to claim 6, wherein a bottom of the terminal groove is provided with a positioning post, the positioning post is disposed in the wire hole, and the positioning post is The top is flush with the bottom of the lead hole.
12. The terminal block assembly for an aluminum wire winding according to claim 2, wherein the glue guiding groove is disposed on the groove wall, and the glue guiding groove and the lead hole are all pulled out along the terminal Direction opening setting.
13. The terminal block assembly for an aluminum wire winding according to claim 12, wherein a circlip is provided on an inner wall surface of the first card plate and/or the second card plate, and the card spring piece and the corresponding The first card or the second card has an angle, and the card spring extends along the insertion direction of the terminal.
14. The terminal block assembly for an aluminum wire winding according to claim 13, wherein the end portion of the retaining spring piece is provided with a lug extending in a direction approaching the corresponding first or second card plate.
15. A terminal block assembly for an aluminum wire winding according to claim 12, wherein a barb is provided on a side end surface of said first card plate and/or said second card plate.
16. A motor characterized by comprising a terminal block assembly of an aluminum wire winding, the terminal block assembly of the aluminum wire winding comprising a terminal block and a plurality of connecting terminals, wherein the terminal block is provided with a terminal for inserting the connecting terminal a slot, the terminal slot has two opposite slot walls, and the slot wall is provided with a lead hole for the aluminum wire winding lead to pass through;

    The terminal block is provided with a card slot for engaging with a lead of the aluminum wire winding, and the card slot is butted with the lead hole, wherein the terminal is matched with the slot wall The surface, and/or the mating surface of the groove wall and the terminal, is provided with a glue guiding groove, the oil guiding groove surrounding the lead wire and communicating the wire hole and the terminal groove.
17. The motor according to claim 16, wherein said terminal comprises an opposite first card, a second card, and a connecting plate connecting said first card and said second card, said The card slot is opened on the first card board and the second card board.
18. The motor according to claim 17, wherein said connecting plate is connected to an end portion on the same side of said first card plate and said second card plate, said connecting plate being provided with said card slot The wire passing hole has a width larger than a width of the wire groove.
19. The motor according to claim 17, wherein the glue guiding groove is disposed on the groove wall, and the glue guiding groove and the lead hole are respectively opened in the pulling direction of the terminal.
20. The motor according to claim 19, wherein a circlip is provided on an inner wall surface of the first card and/or the second card, the card spring and the corresponding first card Or the second card has an angle, and the card spring extends along the insertion direction of the terminal.