CN213460146U

CN213460146U - Connection structure of binding post and enameled wire to and coil pack and drain pump motor

Info

Publication number: CN213460146U
Application number: CN202022724999.8U
Authority: CN
Inventors: 王红标; 敖林
Original assignee: Jiangmen Tiande Electrical Appliance Co ltd
Current assignee: Jiangmen Tiande Electrical Appliance Co ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-06-15
Anticipated expiration: 2030-11-23

Abstract

The utility model provides a connection structure of binding post and enameled wire, binding post (1) includes terminal (11) to and the crimping is fixed in first terminal (12) of terminal (11) top, enameled wire (2) are located including a clamp between terminal (11) and first terminal (12), and with terminal (21) that terminal (11) and first terminal (12) butt-joint are connected, its characterized in that, still have one between terminal (11) and first terminal (12) and be used for filling soldering tin layer (13) in space between terminal (11) and first terminal (12). By adding the tin wire (13') and welding the tin wire and the wiring terminal (21), the molten tin fills the gap between the wiring terminal (11) and the first terminal (12), so that the fixed connection effect of the wiring terminal (11) and the first terminal (12) is better, and the phenomenon that the enameled wire (2) is loosened due to rebounding of the first terminal (12) is effectively prevented.

Description

Connection structure of binding post and enameled wire to and coil pack and drain pump motor

Technical Field

The utility model belongs to wiring and connection field especially relate to a connection structure, coil pack and motor of binding post and enameled wire that prevent that enameled wire pine from taking off, the IPC is categorised belongs to H01R 13/405.

Background

The enameled wire used in the motor can be a copper wire or an aluminum wire, and the aluminum wire is applied to the motor in the last 70 th century. No matter the enameled copper wire or the enameled aluminum wire, the existing connection between the enameled wire and the connecting terminal mainly adopts a tin soldering mode. The tin soldering method needs to remove the enameled wire enamel by using liquid tin, and the specific method is that the wire end of the enameled wire is immersed into a high-temperature tin furnace to melt off the enameled wire enamel on the surface, in order to fix the enameled wire, a binding post of a binding post is cylindrical, and the enameled wire is generally fixed on the binding post in a winding mode. On the one hand, however, the terminal block needs to consume more labor input for fixing (winding) the enameled wire, and the fixed enameled wire is still easy to loosen and fall off; on the other hand, the enameled wire protruding out of the binding post is easily broken or damaged by impact under the action of external force, so that the product is poor and the motor fails.

The Chinese invention application CN109301567A discloses a connecting structure of a connecting terminal and an enameled wire, which realizes the butt-welding connection of the enameled wire and the connecting terminal based on the connecting terminal with a specific structure and overcomes the defects caused by the conventional soldering process; and the length of removing the enamel coating of the enameled wire is controllable, the possibility of corrosion of air to the enamel coating removing section is reduced to the minimum, and the service life of a coil assembly or a motor of a connecting structure comprising a connecting terminal and the enameled wire is indirectly prolonged. Although the invention application solves the above technical problems, in actual production, the first terminal fixed to the terminal post by punching may be bounced, so that the enameled wire may be loosened.

For terms and common knowledge, refer to the mechanical engineering handbook and the electromechanical engineering handbook, published in 1983 or 1997 of mechanical industry Press.

Disclosure of Invention

The technical problem to be solved by the utility model is to improve on the basis of CN109301567A, and more effectively prevent the enameled wire from loosening. The utility model adopts the following technical scheme:

a connecting structure of a connecting terminal and an enameled wire is characterized in that a soldering tin layer 13 used for filling a gap between the connecting terminal 11 and a first terminal 12 is further arranged between the connecting terminal 11 and the first terminal 12, the connecting terminal 1 comprises the connecting terminal 11 and the first terminal 12 which is fixed above the connecting terminal 11 in a crimping mode, the enameled wire 2 comprises the connecting terminal 21 which is clamped between the connecting terminal 11 and the first terminal 12 and is in butt-welding connection with the connecting terminal 11 and the first terminal 12.

Preferably, the post 11 includes a first surface 111, and a first groove 112 opened downward from the first surface 111; the solder layer 13 is formed by melting a tin wire 13 ', and the tin wire 13' and the terminal 21 are disposed in the first groove 112.

Preferably, the connection structure of the connection terminal and the enameled wire further comprises a second terminal 14 fixed above the first terminal 12 in a crimping manner.

Preferably, the connecting structure of the connecting terminal and the enameled wire further comprises a heat shrinkable tube 15 sleeved on the periphery of the binding post 11 and the first terminal 12.

Preferably, the connection structure of the connection terminal and the enameled wire further comprises a heat shrinkable tube 15 sleeved on the periphery of the binding post 11, the first terminal 12 and the second terminal 14.

This binding post and enameled wire's connection structure has following beneficial effect:

(1) through adding tin silk 13 'and terminal 21 and carrying out the fusion welding together, the molten tin fills the space between terminal 11 and the first terminal 12 and forms the soldering tin layer for terminal 11 and first terminal 12 fixed connection's effect is better, effectively prevents that first terminal 12 from rebounding and leading to the phenomenon that enameled wire 2 pine takes off.

(2) Through setting up first recess 12 at terminal 11, make stable the placing and the location of tin silk 13' and wiring end 21, the reliability of being convenient for wiring end 21 and terminal 11, first terminal 12 butt-joint to be connected to and for the shaping of soldering tin layer 13 provides the space, guarantee soldering tin layer 13 and terminal 11, first terminal 12 in close contact with.

(3) The phenomenon that the enameled wire 2 is loosened due to rebounding of the first terminal 12 is effectively prevented through the pressure connection of the second terminal 14 to the first terminal 12.

(4) The heat shrinkable tube 15 is sleeved outside the connecting structure of the connecting terminal and the enameled wire, so that the enameled wire 2 can be prevented from loosening.

The utility model also claims to protect a coil component adopting the connecting structure of the connecting terminal and the enameled wire, and also comprises a coil framework 3 and a plastic package layer 4; the wiring terminal 1 is fixed on the coil framework 3 in an inserting mode, and the enameled wire 2 is wound on the coil framework 3 to form a coil; the plastic package layer 4 is made by injection molding, and wraps the coil framework 3, the coil and the connecting structure of the connecting terminal and the enameled wire.

The utility model discloses still claim a drain pump motor, including above-mentioned coil pack.

Drawings

Fig. 1 is a sectional view of a connection structure of a connection terminal and an enameled wire according to the present invention;

fig. 2 is a perspective view of a connection structure of a connection terminal and an enameled wire according to the present invention;

fig. 3 is a perspective view of the connection structure of the connection terminal and the enameled wire of the present invention with a second terminal added;

fig. 4 is a perspective view of the connection structure of the connection terminal and the enamel wire shown in fig. 3 after the heat shrinkable tube is sleeved;

FIG. 5 is an enlarged view of area A of FIG. 4;

fig. 6 is a perspective view of the coil assembly of the present invention;

fig. 7 is a perspective view of the drain pump motor of the present invention.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the connection structure of the connection terminal and the enameled wire provided by this embodiment, as shown in fig. 1 and fig. 2, the connection terminal 1 includes a terminal 11, a first terminal 12 and a body 16. The body 16 is sheet-shaped, and the lower part of the body can be fixed in the insertion groove on the coil framework 3 in an insertion mode. The enameled wire 2 comprises a terminal 21, and the terminal 11 is a sheet structure bent from one end of the body 16 and extending to protrude, and is used for being connected with the terminal 21 of the enameled wire 2. The post 11 includes a first surface 111 and a first groove 112 formed by opening the first surface 111 downward.

The first terminal 12 includes a first fixing portion 121 and a first crimping portion 122 connected to each other, the first terminal 12 is connected to a sidewall of the post 11 through the first fixing portion 121, and the first crimping portion 122 is adapted to cover the first surface 111 of the post 11 through crimping. The first terminal 12 is in a U shape or a semi-annular shape along a cross section perpendicular to a crossing direction of the terminal 21 of the enameled wire 2, the first fixing part 121 is fixedly connected with the terminal 11, and the first crimping part 122 is located above the terminal 11 and does not contact with the terminal 11; after the first crimping portion 122 is stamped, the first surface 111 of the terminal 11 is covered by crimping.

Improved design 1

The utility model discloses what do the improvement is mainly, still have between terminal 11 and the first terminal 12 and melt by tin silk 13' and form soldering tin layer 13. The tin wire 13' and the terminal 21 are placed in the first recess 112, and are crimped and fixed by the first terminal 12. The terminal 21 is butt-welded to the first terminal 12 and the post 11, and the solder wire 13' is melted to form a solder layer 13 filling the gap between the post 11 and the first terminal 12. The solder layer 13 generates tension due to the stress of the first terminal 12 rebounding and releasing, and tensions the first terminal 12 and the terminal 11 to enhance the effect of fixing and connecting the two.

Modified design 2

In a further improvement, as shown in fig. 3, on the basis of the improved design 1, the connection structure of the connection terminal and the enameled wire further comprises a second terminal 14. The second terminal 14 includes a second fixing portion 141 and a second crimping portion 142 connected to each other, the second terminal 14 is connected to the other end side wall of the terminal 11 through the second fixing portion 141, and the second crimping portion 142 is covered above the first terminal 12 through crimping. The section of the second terminal 14 along the direction perpendicular to the crossing direction of the terminal 21 of the enameled wire 2 is in a U shape or a semi-ring shape, the second fixing part 141 is fixed with the terminal 11 of the terminal 11, and the second crimping part 142 is positioned above the terminal 11 and is not contacted with the terminal 11 and the first terminal 12; after the second press-fitting part 142 is pressed, the second press-fitting part 142 is press-fitted over the first terminal 12. The solder wire 13' is melted to form a solder layer 13 (not shown in fig. 3) filling the space between the post 11 and the first and

second terminals

12, 14 via the butt-joint of the terminal 21 with the first and

second terminals

12, 11. The crimping of the second terminal 14 to the first terminal 12 also enhances the effect of the fixed connection between the first terminal 12 and the binding post 11, and prevents the phenomenon that the enameled wire 2 is loosened due to the rebounding of the first terminal 12.

Modified design 3

The connecting structure of the connecting terminal and the enameled wire further comprises a heat shrink tube 15. On the basis of the improved design 1, the heat shrinkable tube 15 is sleeved on the peripheries of the terminal 11 and the first terminal 12. On the basis of the modified design 2, as shown in fig. 4, the heat shrinkable tube 15 is sleeved on the peripheries of the terminal 11, the first terminal 12 and the second terminal 14. After the wiring terminal 21 is connected with the first terminal 12 and the wiring terminal 11 in a butt-welding mode, the heat shrink tube 15 is sleeved outside the connection structure of the wiring terminal 1 and the enameled wire 2, the heat shrink tube 15 is tightened inwards, the effect of fixedly connecting the first terminal 12 and the wiring terminal 11 is enhanced, and the phenomenon that the enameled wire 2 is loosened due to rebounding of the first terminal 12 is prevented.

The utility model discloses still claim a coil subassembly, its structure still includes coil skeleton 3 and plastic envelope layer 4 on the basis of improved

design

1 and 2. As shown in fig. 4, the connection terminal 1 is fixed in the insertion groove of the bobbin 3 in an insertion manner, and the enameled wire 2 is wound around the bobbin 3 to form a coil. As shown in fig. 5, the plastic package layer 4 is formed by injection molding on the basis of the coil assembly, and covers the coil bobbin 3, the coil, the connection structure of the connection terminal and the enameled wire.

As shown in fig. 6, the present invention also claims a drain pump motor, including the present invention coil assembly, stator core 5, pump body 6 and pump cover 7. In other embodiments, the coil assembly of the present invention may be applied to other motors.

The utility model discloses a binding post 1, coil pack do not confine to in the application of motor, and it can be applied to all probably contain in binding post 1, coil pack's the electrical apparatus, for example solenoid valve, transformer etc..

Claims

1. The utility model provides a connection structure of binding post and enameled wire, binding post (1) includes terminal (11) to and crimping is fixed in first terminal (12) above terminal (11), enameled wire (2) include press from both sides locate between terminal (11) and first terminal (12), and with terminal (21) that terminal (11) and first terminal (12) butt-joint are connected, its characterized in that, still have one between terminal (11) and first terminal (12) and be used for filling soldering tin layer (13) in the space between terminal (11) and first terminal (12).

2. The connecting structure of the wire connecting terminal and the enameled wire according to claim 1, wherein the terminal (11) comprises a first surface (111) and a first groove (112) formed downward from the first surface (111); the solder layer 13 is formed by melting a tin wire 13 ', and the tin wire 13' and the terminal 21 are placed in the first groove 112.

3. The connection structure of a connection terminal and an enameled wire according to claim 1, further comprising a second terminal (14) fixed above the first terminal (12) by crimping.

4. A connecting structure of a wire connecting terminal and an enameled wire according to any one of claims 1 to 3, characterized in that further comprises a set of heat shrink tubes (15) arranged at the periphery of the terminal post (11) and the first terminal (12).

5. A connecting structure of a wire connecting terminal and an enameled wire according to any one of claims 1 to 3, characterized in that, further comprises a set of heat shrink tubes (15) arranged at the periphery of the terminal post (11), the first terminal (12) and the second terminal (14).

6. A coil component, characterized by comprising a coil bobbin (3) and a connection structure of a connection terminal and an enameled wire according to any one of claims 1 to 5; the wiring terminal (1) is fixed on the coil skeleton (3) in an inserting mode, and the enameled wire (2) is wound on the coil skeleton (3) to form a coil.

7. The coil assembly according to claim 6, further comprising a plastic package layer (4), wherein the plastic package layer (4) is formed by injection molding, and wraps the coil bobbin (3), the coil and the connection structure of the connection terminal and the enameled wire.

8. A sump pump motor comprising the coil assembly of claim 6 or 7.