CN212660043U

CN212660043U - Binding post and connection structure with enameled wire thereof, coil pack and motor

Info

Publication number: CN212660043U
Application number: CN202021228196.7U
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: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-03-05
Anticipated expiration: 2030-06-29

Abstract

The utility model provides a binding post and with the connection structure of enameled wire, coil pack and motor, binding post includes: a terminal body; the binding post is fixed on the binding post body and comprises a first surface and a first groove formed downwards from the first surface, and the first groove comprises two side surfaces and a bottom surface; a first terminal which is fixed to the terminal by crimping; and a second terminal which is fixed by crimping above the first terminal. Through the crimping of second terminal to first terminal, effectively prevent that first terminal bounce-back from leading to the phenomenon that the enameled wire pine takes off.

Description

Binding post and connection structure with enameled wire thereof, coil pack and motor

Technical Field

The utility model belongs to wiring and connection field especially relate to a binding post and with the connection structure of enameled wire, coil pack and motor, IPC classification 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 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.

SUMMERY OF THE UTILITY MODEL

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:

the utility model provides a prevent binding post that enameled wire pine takes off which characterized in that includes:

a terminal body;

the binding post is fixed on the binding post body and comprises a first surface and a first groove formed downwards from the first surface, and the first groove comprises two side surfaces and a bottom surface;

a first terminal which is fixed to the terminal by crimping;

a second terminal crimpably secured over the first terminal.

Specifically, the second terminal comprises a crimping part and a fixing part which are connected with each other, the fixing part is connected with the binding post, and the crimping part can be crimped and covered above the first terminal.

Preferably, the end of the first terminal is provided with a chamfer with an upward inclined surface, the end of the second terminal is provided with a chamfer with a downward inclined surface, and the first terminal and the second terminal are connected in a matched contact manner through the inclined surfaces formed by the two chamfers.

Preferably, the side and/or bottom surfaces of the first groove are provided with a plurality of tooth-like structures.

This prevent binding post that enameled wire pine takes off has following beneficial effect:

(1) through the crimping of second terminal to first terminal, effectively prevent that first terminal bounce-back from leading to the phenomenon that the enameled wire pine takes off.

(2) The end parts of the first terminal and the second terminal are in fit contact through the inclined planes formed by the chamfers, so that the contact area of the first terminal and the second terminal is increased, and the effect of crimping and fixing is enhanced.

(3) The tooth-shaped structures arranged on the side surfaces and/or the bottom surface of the first groove can also prevent the enameled wire from loosening.

The utility model also provides a connection structure of binding post and enameled wire, a serial communication port, including enameled wire and foretell binding post, the enameled wire includes a wiring end, first terminal crimping is fixed the wiring end of enameled wire with the terminal, the wiring end of enameled wire with first terminal the terminal butt-joint is connected.

Preferably, the bottom surface of the first groove is connected with the plane of the terminal body through an arc.

Preferably, the bottom surface of the first groove is connected with the plane where the terminal body is located through at least one plane, and included angles between the bottom surface of the first groove and the plane where the terminal body is located are obtuse angles.

This binding post and enameled wire's connection structure has following beneficial effect: the bottom surface of the first groove is connected with the wiring terminal body through an arc or an obtuse angle, the transition part intersected by the two planes is smoother, and the enameled wire is prevented from being broken when the transition part is bent.

The utility model also provides a coil component, a serial communication port, include: coil skeleton with binding post and enameled wire's connection structure, binding post is fixed in coil skeleton, binding post is equipped with the edge the binding post that the binding post body upwards extended and formed, the enameled wire twine in coil skeleton forms the coil, the wiring end butt-joint of enameled wire is fixed in the first recess of terminal.

Preferably, the coil assembly further comprises a temperature controller, the temperature controller is provided with a pin led out from the temperature controller body, and the pin is provided with a through hole for the connecting column to pass through.

Specifically, the pins of the temperature controller are connected with the connecting columns in a welding mode.

Preferably, the coil assembly further comprises a plastic package layer, wherein the plastic package layer is formed by injection molding and covers the outer layers of the temperature controller, the coil framework, the coil and the wiring terminal.

The coil component has the following beneficial effects:

(1) the connecting mode of the connecting column and the temperature controller is simple, and the production efficiency of the product is effectively improved.

(2) The plastic package layer wraps the parts electrically connected with the inside of the coil assembly, so that the corrosion of external water vapor to the wiring terminal and the coil is effectively prevented.

The utility model also provides a motor, a serial communication port, include coil pack.

Drawings

Fig. 1 is a perspective view of a terminal block;

fig. 2 is a perspective view of a connection structure of a connection terminal and an enamel wire;

fig. 3 is a perspective view of a connection structure of a connection terminal and an enamel wire after crimping of a first terminal and a second terminal;

FIG. 4 is a perspective view of the coil assembly;

FIG. 5 is a perspective view of a coil assembly equipped with a thermostat;

FIG. 6 is a perspective view of the coil assembly after the molding layer is formed;

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

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.

As shown in fig. 1, the terminal 1 of the present embodiment 1 includes a terminal body 11, a post 12, and a coupling post 14.

The wiring terminal body 11 is sheet-shaped, and the lower part of the wiring terminal body can be fixed in an inserting groove on the coil framework 4 in an inserting mode.

The connecting post 14 is a column extending from one end of the terminal body 11 in a direction of a plane where the terminal body 11 is located.

The binding post 12 is used for being connected with a binding post of the enameled wire, is fixed on the binding post body 11, and extends and protrudes from one end of the binding post body 11 along a direction perpendicular to a plane where the binding post body 11 is located. The post 12 includes a first surface 121, a first groove 122. The first recess 122 is formed by the first surface 121 opening downward and includes two side surfaces 1222 and a bottom surface 1221.

The optimized design of the first groove 122 is: the side 1222 and/or the bottom 1221 of the first recess 122 is provided with a plurality of teeth 131 to further prevent the enamel wire from coming loose.

The first terminal 13 is fixed on the post 12 and includes a crimping portion 132 and a fixing portion 133 connected to each other, the first terminal 13 is fixed on a side wall of the post 12 through the fixing portion 133, and the crimping portion 132 is adapted to cover the first surface 121 of the post 12 through crimping. The first terminal 13 has a U-shaped or semi-annular cross section along a direction perpendicular to the crossing direction of the terminal 21 of the enameled wire, and in an initial state of the first terminal 13, as shown in fig. 1, the fixing portion 133 is fixed with the terminal 12, and the crimping portion 132 is located above the terminal 12 and does not contact with the terminal 12; after the press-fitting part 132 is pressed, as shown in fig. 3, the press-fitting part 132 is press-fitted to cover the first surface 121 of the post 12.

The second terminal 15 is fixed to the post 12, and includes a press-contact portion 152 and a fixing portion 153 connected to each other, the second terminal 15 is fixed to a side wall of the post 12 by the fixing portion 153, and the press-contact portion 152 is adapted to cover an upper portion of the first terminal 13 by press-contact. The section of the second terminal 15 along the direction perpendicular to the crossing direction of the terminal 21 of the enameled wire is in a U shape or a semi-ring shape, the initial state of the second terminal 15 is that as shown in fig. 1, the fixing part 153 is fixed with the terminal 12, and the crimping part 152 is positioned above the terminal 12 and is not contacted with the terminal 12 and the first terminal 13; after the press-fitting section 152 is pressed, as shown in fig. 3, the press-fitting section 152 is press-fitted over the first terminal 13.

The edge above the crimping part 132 of the first terminal 13 is provided with a chamfer with an upward slope, the edge below the crimping part 152 of the second terminal 15 is provided with a chamfer with a downward slope, and the crimping part 132 of the first terminal 13 and the crimping part 152 of the second terminal 15 are connected in a matching contact manner through the two slopes.

As shown in fig. 2 and fig. 3, the connection structure of the connection terminal and the enameled wire of this embodiment 2 includes a connection terminal 1 and an enameled wire 2. The structure of the connection terminal 1 is the same as that of embodiment 1, the enameled wire 2 includes a terminal 21, the terminal 21 of the enameled wire is disposed on the first groove 122, the first terminal 13 is pressed and fixed with the terminal 21 of the enameled wire and the terminal 12, and the second terminal 15 is pressed above the first terminal 13. The terminal 21 of the enameled wire is connected with the first terminal 13 and the binding post 12 in a butt-welding way, and finally the second terminal 15 is covered above the first terminal 13 in a pressing way.

In the present embodiment, as shown in fig. 2, the transition portion 16 where the bottom surface 1221 of the first groove 122 interferes with the inserting portion 14 is designed to be in an arc shape, so that after the terminal 21 of the enameled wire is placed in the first groove 122, the enameled wire 2 is bent at the transition portion 16 to be smooth, and the enameled wire 2 is not easily broken. With an alternative design for this, as shown in fig. 3, the transition portion 16 can also be designed such that: the bottom surface 1221 of the first groove 122 is in transition connection with the inserting portion 14 through a transition plane, and included angles between the transition plane and the bottom surface 1221 of the first groove 122 and included angles between the transition plane and the terminal body (11) are obtuse angles. The enameled wire 2 is bent smoothly while passing through the terminal body (11), the transition plane and the bottom surface 1221 of the first groove 122 in this order. The greater the number of transition planes, the smoother the bending of the enamel wire 2 takes place in said transition portion 16.

The coil assembly 7 of this embodiment 3 is configured to further include a temperature controller 6 and a molding layer 5 on the basis of

embodiments

1 and 2.

As shown in fig. 4, the connection terminal 1 is fixed in an insertion groove of the bobbin 4 in an insertion manner, and the enameled wire 2 is wound on the bobbin 4 to form a coil.

As shown in fig. 5, the thermostat 6 has a pin 61, and a through hole 611 is formed at an end of the pin 61. The coupling post 14 passes through the through hole 611 and is welded to the pin 61 through the coupling post 14, so that the thermostat 6 is electrically connected to the terminal 1. The temperature controller 6 is used for disconnecting the circuit when the winding temperature rises to exceed a rated value.

As shown in fig. 6, the plastic package layer 5 is formed by injection molding on the basis of the coil assembly 7, and covers the outer layers of the temperature controller 6, the coil bobbin 4, the coil and the binding post 12.

As shown in fig. 7, the drain pump motor of this embodiment 4 includes the coil assembly 7, the stator core 8, the pump body 91, and the pump cover 92 of the present invention. 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 7 are not restricted to in the application of motor, and it can be applied to all probably contain in binding post 1, coil pack 7's the electrical apparatus, for example solenoid valve, transformer etc..

Claims

1. The utility model provides a prevent binding post that enameled wire pine takes off which characterized in that includes:

a terminal body (11);

the binding post (12) is used for being connected with a terminal (21) of an enameled wire (2), the binding post (12) is fixed on the binding post body (11) and comprises a first surface (121) and a first groove (122) formed downwards from the first surface (121), and the first groove (122) comprises two side surfaces (1222) and a bottom surface (1221);

a first terminal (13) which is fixed to the post (12) by crimping;

a second terminal (15) which is fixed by crimping above the first terminal (13).

2. The enameled wire looseness-prevention wire connection terminal according to claim 1, wherein the second terminal (15) comprises a crimping portion (152) and a fixing portion (153) which are connected with each other, the fixing portion (153) is connected to the terminal post (12), and the crimping portion (152) can be crimped and covered above the first terminal (13).

3. The enameled wire looseness-prevention wiring terminal according to claim 2, wherein an end portion of the first terminal (13) is provided with a chamfer with an upward slope, an end portion of the second terminal (15) is provided with a chamfer with a downward slope, and the first terminal (13) and the second terminal (15) are connected in a contact manner through the slopes formed by the two chamfers.

4. Terminal according to claim 1, wherein the side surfaces (1222) and/or the bottom surface (1221) of the first recess (122) are provided with a plurality of teeth-like structures (131).

5. A connecting structure of a connecting terminal and an enameled wire, which is characterized by comprising an enameled wire (2) and the connecting terminal (1) of any one of claims 1 to 4, wherein the enameled wire (2) comprises a connecting terminal (21), the first terminal (13) is crimped and fixes the connecting terminal (21) of the enameled wire (2) and the binding post (12), and the connecting terminal (21) of the enameled wire (2) is in butt-welding connection with the first terminal (13) and the binding post (12).

6. The connection structure of a connection terminal and an enameled wire according to claim 5, wherein the bottom surface of the first groove (122) is connected to the connection terminal body (11) through an arc.

7. The connection structure of a connection terminal and an enameled wire according to claim 5, wherein the bottom surface of the first groove (122) is connected to the connection terminal body (11) through at least one plane having an obtuse angle with both the bottom surface (1221) of the first groove (122) and the connection terminal body (11).

8. A coil component, characterized by, including coil skeleton (4) and the connection structure of binding post (1) and enameled wire (2) of any one of claims 5 to 7, binding post (1) is fixed in coil skeleton (4), binding post (1) is equipped with along binding post (14) that binding post body (11) upwards extends the formation, enameled wire (2) twine in coil skeleton (4) form the coil, and wiring end (21) butt weld of enameled wire (2) is fixed in first recess (122) of terminal (12).

9. Coil assembly according to claim 8, wherein the coil assembly (7) further comprises a thermostat (6), the thermostat (6) being provided with a pin (61) leading out of a thermostat body, the pin (61) being provided with a through hole (611) for the passage of the coupling post (14).

10. Coil assembly according to claim 9, wherein the pins (61) of the thermostat (6) are soldered to the coupling studs (14).

11. The coil assembly according to claim 10, wherein the coil assembly (7) further comprises a plastic package layer (5), and the plastic package layer (5) is made by injection molding and covers the outer layers of the temperature controller (6), the bobbin (4), the coil and the terminal (12).

12. An electrical machine, characterized by comprising a coil assembly (7) according to any one of claims 8 to 11.