Stator coil framework

Abstract

The utility model relates to a stator coil framework, and aims to solve the technical problem of insufficient welding of a stator pin and a circuit board. The stator coil framework comprises an annular magnet yoke, a magnetic pole and a pin, the magnetic pole is combined to the edge of the magnet yoke, the magnet yoke comprises a first end and a second end which are parallel to each other, the first end is an end facing a mounting substrate of a stator, a rubber sleeve is arranged outside the magnet yoke, the pin is arranged on the rubber sleeve, and the first end and the second end face each other. The pin comprises a first connecting part and a second connecting part, the first connecting part is exposed out of the plane where the first end part is located, and the second connecting part is exposed out of the plane where the second end part is located.

Description

Technical Field

[0001] The utility model relates to the field of motors, in particular to a stator coil skeleton. Background Art

[0002] Some existing stator coil skeletons have pins at one end. When in use, the coil is set on the magnetic pole of the skeleton, and the end of the coil is wound on the pin. The pin is welded on the circuit board to electrically connect the stator coil to the circuit board. Among them, the welding part between the pin and the circuit board includes the end of the coil, which is prone to insufficient welding such as cold welding, resulting in poor motor quality. The welding part is prone to disconnection after vibration. Utility Model Content

[0003] The utility model aims to provide a stator coil frame, aiming to improve the phenomenon of insufficient welding between stator pins and circuit boards in the prior art.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A stator coil skeleton comprises an annular yoke, a magnetic pole and a pin, wherein the magnetic pole is coupled to the edge of the yoke, the yoke comprises a first end and a second end parallel to each other, the first end being the end facing a mounting substrate of the stator, a rubber sleeve is provided on the outside of the yoke, the pin is provided in the rubber sleeve, the pin comprises a first connecting portion and a second connecting portion, the first connecting portion is exposed from a plane where the first end is located, and the second connecting portion is exposed from a plane where the second end is located.

[0006] Compared with the prior art, the utility model has at least the following beneficial effects:

[0007] By arranging the first connection part and the second connection part on the pin, the first connection part is exposed from the plane where the first end part of the yoke is located, and the second connection part is exposed from the plane where the second end part of the yoke is located, the circuit board can be welded to the first connection part of the pin, and the end of the coil on the magnetic pole is connected to the second connection part of the pin, so that the connection of the coil on the pin and the welding of the circuit board on the pin are separated by the yoke and will not interfere with each other, thereby effectively improving the phenomenon of insufficient welding between the stator pin and the circuit board in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a schematic diagram of a stator coil skeleton of an embodiment;

[0009] Figure 2 It is the AA section view;

[0010] Figure 3 It is the BB section view;

[0011] Reference numerals:

[0012] 1. Magnetic yoke;

[0013] 11. a first end portion;

[0014] 12. a second end portion;

[0015] 2. Magnetic poles;

[0016] 3. Boot-shaped part;

[0017] 4. Pins;

[0018] 41. a first connecting portion;

[0019] 42. a second connecting portion;

[0020] 5. Rubber sleeve;

[0021] 51. a second raised portion;

[0022] 52. Second adhesive layer;

[0023] 53. The third adhesive layer;

[0024] 54. First adhesive layer;

[0025] 55. A first protrusion. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the utility model, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0029] Reference Figure 1 The stator coil skeleton includes an annular yoke 1, and the outer edge of the yoke 1 is combined with four poles 2. The four poles 2 are arranged at equal intervals along the circumferential direction, and the outer edge of the pole 2 has a boot-shaped portion 3 extending along the circumferential direction.

[0030] Specifically in this embodiment, the yoke 1, the magnetic pole 2 and the shoe-shaped portion 3 are integrally formed and are composed of a plurality of stacked silicon steel sheets. As other embodiments, the yoke 1 and the magnetic pole 2 can be formed separately, and then the magnetic pole 2 is coupled to the outer edge of the yoke 1 through a connecting structure, for example, a tenon groove is provided on the outer edge of the yoke 1, a tenon tongue is provided on the magnetic pole 2, and the magnetic pole 2 is coupled to the outer edge of the yoke 1 through the tenon tongue and the tenon groove.

[0031] In this embodiment, the magnetic pole 2 is specifically combined with the outer edge of the magnetic yoke 1, and the stator coil skeleton formed thereby can be used to construct an outer rotor motor. It can be understood that the magnetic pole 2 can also be combined with the inner edge of the magnetic yoke 1, and the stator coil skeleton formed thereby can be used to construct an inner rotor motor.

[0032] It can also be understood that the number of magnetic poles 2 can be more than four or less than four.

[0033] In this embodiment, the specific number of pins 4 is three. Pins 4 are used to connect the coils on the magnetic poles 2 together, and then electrically connect to the circuit board, and then electrically connect to the power supply through the circuit board. It can be understood that the number of pins 4 can be more than three or less than three.

[0034] Reference Figure 2 The yoke 1 includes a first end portion 11 and a second end portion 12 which are parallel to each other. Specifically, Figure 2 In the embodiment, the lower end of the yoke 1 is the first end 11, and the upper end of the yoke 1 is the second end 12. The outer part of the yoke 1 is combined with a rubber sleeve 5 to protect the yoke 1 from damage such as collision and rust. Specifically in this embodiment, the rubber sleeve 5 is combined with the outer part of the yoke 1 by injection molding.

[0035] Reference Figure 2The rubber sleeve 5 is provided with a pin 4, and the pin 4 includes a first connection portion 41 and a second connection portion 42, wherein the first connection portion 41 is exposed from the plane where the lower end of the yoke 1 is located, and the second connection portion 42 is exposed from the plane where the upper end of the yoke 1 is located. Specifically in this embodiment, the pin 4 is a straight line shape.

[0036] During manufacturing, the yoke 1 and the magnetic pole 2 and the pin 4 composed of silicon steel sheets are placed in an injection mold, and the rubber sleeve 5 is injection molded. After injection molding, the rubber sleeve 5, the yoke 1 and the magnetic pole 2 and the pin 4 are combined together to form the stator coil skeleton.

[0037] Reference Figure 2 In this embodiment, the rubber sleeve 5 specifically includes a first rubber layer 54 combined with the lower end of the yoke 1. The first rubber layer 54 is provided with a downward first protrusion 55. The first protrusion 55 is specifically arranged at the junction of the yoke 1 and the magnetic pole 2. The first protrusion 55 can protect the coil on the magnetic pole 2 from being hit by objects under the yoke 1.

[0038] Further, a third downward protrusion may be provided on the outer edge of the first adhesive layer 54 corresponding to the magnetic pole 2 to protect the coil from the outside.

[0039] Reference Figure 2 In this embodiment, the rubber sleeve 5 also includes a second rubber layer 52 combined with the upper end of the yoke 1. The second rubber layer 52 is provided with a second upward protrusion 51. The second protrusion 51 is specifically arranged at the junction of the yoke 1 and the magnetic pole 2. The second protrusion 51 can protect the coil on the magnetic pole 2 from being hit by objects above the yoke 1.

[0040] Reference Figure 2 In this embodiment, the rubber sleeve 5 further includes a third rubber layer 53 combined with the outer edge of the yoke 1, and the pin 4 is arranged to penetrate the third rubber layer 53 along the up-down direction.

[0041] Among them, the height of the first connection part 41 of the pin 4 is greater than the height of the first protrusion 55. When a third protrusion is provided, the height of the first connection part 41 of the pin 4 is also greater than the height of the third protrusion to ensure that the stator coil frame can be welded to the circuit board through the first connection part 41 of the pin 4.

[0042] The height of the second connection portion 42 of the pin 4 is greater than the height of the second protrusion 51 , so that when the end of the coil on the magnetic pole 2 is connected to the second connection portion 42 of the pin 4 , it will not be interfered by the second protrusion 51 .

[0043] Reference Figure 3 The rubber sleeve 5 also extends to the outside of the magnetic pole 2, so as to protect the magnetic pole 2 from damage such as collision and rust.

[0044] This embodiment has at least the following advantages:

[0045] In the present embodiment, by improving the pin 4 of the stator coil skeleton, specifically by providing a first connection portion 41 and a second connection portion 42 on the pin 4, the first connection portion 41 is exposed from the plane where the first end portion 11 of the yoke 1 is located, and the second connection portion 42 is exposed from the plane where the second end portion 12 of the yoke 1 is located, so that the circuit board can be welded to the first connection portion 41 of the pin 4, and the end of the coil on the pole 2 is connected to the second connection portion 42 of the pin 4, so that the connection of the coil on the pin 4 and the welding of the circuit board on the pin 4 are separated by the yoke 1 and will not interfere with each other, thereby avoiding the interference of the coil copper wire on the pin with the welding of the pin and the circuit board in the prior art, and effectively improving the phenomenon of insufficient welding between the stator pin and the circuit board in the prior art.

[0046] In the above embodiment, by arranging the rubber sleeve 5 on the outside of the yoke 1 and the outside of the magnetic pole 2, the yoke 1 and the magnetic pole 2 are protected and can be protected from damage such as collision with foreign objects and rust.

[0047] In the above embodiment, by setting the structure of the rubber sleeve 5 , specifically by setting the first protrusion 55 , the second protrusion 51 and the third protrusion at specific positions of the rubber sleeve 5 , the coil on the magnetic pole 2 can be protected.

[0048] In the above embodiment, by setting the structure of the magnetic pole 2, specifically by setting the boot-shaped portion 3 on the outer edge of the magnetic pole 2, the coil on the magnetic pole 2 can be limited and protected.

[0049] The above-mentioned specific embodiments are used to describe the present invention in detail. These detailed descriptions are only limited to helping those skilled in the art understand the content of the present invention and cannot be understood as limiting the protection scope of the present invention. Various modifications, equivalent transformations, etc. made by those skilled in the art to the above-mentioned scheme under the conception of the present invention should be included in the protection scope of the present invention.

Claims

1. A stator coil skeleton, characterized in that: The invention comprises an annular magnetic yoke (1), a magnetic pole (2) and a pin (4), wherein the magnetic pole (2) is coupled to the edge of the magnetic yoke (1), the magnetic yoke (1) comprises a first end (11) and a second end (12) which are parallel to each other, the first end (11) being an end facing a mounting substrate of a stator, a rubber sleeve (5) being provided on the outside of the magnetic yoke (1), the pin (4) being provided on the rubber sleeve (5), the pin (4) comprising a first connecting portion (41) and a second connecting portion (42), the first connecting portion (41) being exposed from a plane where the first end (11) is located, and the second connecting portion (42) being exposed from a plane where the second end (12) is located.

2. The stator coil skeleton according to claim 1, characterized in that: It comprises four magnetic poles (2), and the four magnetic poles (2) are connected to the outer edge of the magnetic yoke (1) at equal intervals along the circumferential direction.

3. The stator coil skeleton according to claim 1, characterized in that: The rubber sleeve (5) extends to the outside of the magnetic pole (2).

4. The stator coil skeleton according to claim 1, characterized in that: The rubber sleeve (5) comprises a first rubber layer (54) combined with the first end portion (11), the first rubber layer (54) is provided with a first protrusion (55) corresponding to the junction between the magnetic pole (2) and the magnetic yoke (1), and the height of the first connecting portion (41) is greater than the height of the first protrusion (55).

5. The stator coil frame according to claim 4, characterized in that: The first adhesive layer (54) is provided with a third protrusion at the outer edge corresponding to the magnetic pole (2), and the height of the first connecting portion (41) is greater than the height of the third protrusion.

6. The stator coil skeleton according to claim 1, characterized in that: The rubber sleeve (5) comprises a second rubber layer (52) combined with the second end portion (12); the second rubber layer (52) is provided with a second protrusion (51) corresponding to the junction between the magnetic pole (2) and the magnetic yoke (1); and the height of the second connecting portion (42) is greater than the height of the second protrusion (51).

7. The stator coil skeleton according to claim 1, characterized in that: The rubber sleeve (5) comprises a third rubber layer (53) combined with the outer edge of the magnetic yoke (1), and the pin (4) is arranged on the third rubber layer (53).

8. The stator coil skeleton according to claim 1, characterized in that: The outer edge of the magnetic pole (2) comprises a shoe-shaped portion (3) extending in the circumferential direction.

9. The stator coil skeleton according to claim 1, characterized in that: The magnetic pole (2) and the magnetic yoke (1) are composed of a plurality of stacked silicon steel sheets.

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