Magnetic core structure and motor

Abstract

The utility model relates to the technical field of unmanned aerial vehicles, in particular to a magnetic core structure and a motor, the magnetic core structure comprises at least two base plates connected end to end, one end of each base plate is provided with a clamping groove, and the other end of each base plate extends to form a clamping part; any two adjacent base plates are buckled to the clamping groove of the other base plate through the clamping part of one base plate so as to limit relative movement or opposite movement between any two adjacent base plates. By means of the mode, the magnetic core structure can save materials, reduce the risk of causing resource waste and further reduce cost.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles, in particular to a magnetic core structure and a motor. Background Art

[0002] In the prior art, a motor includes a stator assembly, a rotor assembly, and a casing. Both the stator assembly and the rotor assembly are disposed in the casing. The stator assembly includes a coil and several magnetic cores stacked in sequence. The coil is wound around the several magnetic cores. By energizing the coil, the rotor assembly can rotate relative to the stator assembly to drive external components or equipment to rotate.

[0003] However, in the process of realizing the present invention, the inventors found that the annular magnetic core is obtained by stamping an integral plate, but usually has high requirements for the plate to be processed, and the corners of the plate cannot be utilized, which easily leads to waste of resources. Utility Model Content

[0004] The utility model provides a magnetic core structure, which can save materials, reduce the risk of wasting resources, and further reduce costs.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a magnetic core structure, the magnetic core structure includes at least two substrates connected end to end, one end of the substrate is provided with a card slot, and the other end of the substrate extends with a card portion, and any two adjacent substrates are connected by the card portion of one substrate being buckled into the card slot of the other substrate to limit the relative movement or back-to-back movement between any two adjacent substrates.

[0006] Optionally, along the depth direction of the card slot, the cross-sectional area of the card slot gradually increases; and / or along the extending direction of the card portion, the cross-sectional area of the card portion gradually increases.

[0007] Optionally, along the direction from one substrate to the other substrate, the cross section of the clamping portion is trapezoidal.

[0008] Optionally, the base plates connected end to end are enclosed together to form a sleeve hole;

[0009] The substrate includes an arc portion and a first wide portion extending from the arc portion, part of the first wide portion extends into the sleeve hole, part of the slot is provided in the arc portion, and another part of the slot is provided in the first wide portion.

[0010] Optionally, the arcuate portion is further extended with a second wide portion, part of the second wide portion extends into the sleeve hole, part of the clamping portion is arranged on the arcuate portion, and another part of the clamping portion is arranged on the second wide portion.

[0011] Optionally, the substrate includes an arc-shaped portion and a plurality of tooth portions, the plurality of tooth portions are arranged at intervals along the circumferential direction of the arc-shaped portion, and the tooth portions are used for winding a portion of the coil.

[0012] Optionally, any two adjacent teeth and the arc portion together enclose a gap; a first limiting portion is provided at one end of the tooth away from the arc portion, and part of the first limiting portion extends into the gap, and the first limiting portion is used to limit the movement of the coil.

[0013] Optionally, a second limiting portion is provided at one end of the tooth portion away from the arc-shaped portion, the first limiting portion and the second limiting portion are arranged opposite to each other, and part of the second limiting portion extends into the gap, and the second limiting portion is used to limit the movement of the coil.

[0014] Optionally, the substrates connected end to end together enclose a sleeve hole, and the sleeve hole satisfies: D1:D2=0.74-0.78; wherein D1 is the outer diameter of the magnetic core structure, and D2 is the diameter ratio of the sleeve hole.

[0015] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a motor, the motor includes a rotor assembly, a stator assembly and a casing, the stator assembly and the rotor assembly are both arranged in the casing, the stator assembly includes a coil and the magnetic core structure, and the coil is wound around the magnetic core structure.

[0016] The beneficial effects of the embodiments of the present application are: providing a magnetic core structure, the magnetic core structure comprising at least two substrates connected end to end, a card slot provided at one end of the substrate, a card portion extending from the other end of the substrate, and any two adjacent substrates are connected by the card portion of one substrate being engaged with the card slot of the other substrate to limit relative movement or back-to-back movement between any two adjacent substrates. When the user produces the magnetic core structure, the layout of the substrate can be planned on the plate, and the area of the substrate is equal to or less than half the area of the magnetic core structure of the prior art. Therefore, part of the plate that does not meet the area of the magnetic core structure of the prior art is effectively utilized, and some corners of the plate are effectively utilized, further reducing resource waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0018] Figure 1 This is a view of the magnetic core structure provided by the utility model;

[0019] Figure 2 This is a view of the substrate provided by the utility model.

[0020] Reference numerals:

[0021] 100. Magnetic core structure; 10. Base plate; 10a. Slot; 10b. Clamping portion; 10c. Hole; 11. Arc-shaped portion; 12. First wide portion; 13. Second wide portion; 14. Tooth portion; 15. First limiting portion; 16. Second limiting portion. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art to which this utility model belongs. The terms used in this specification and in the description of this utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The term "and / or" used in this specification includes any and all combinations of one or more of the relevant listed items.

[0024] See also Figure 1-Figure 2 The magnetic core structure 100 includes at least two substrates 10 connected end to end. A slot 10a is provided at one end of the substrate 10, and a latch portion 10b extends from the other end of the substrate 10. Any two adjacent substrates 10 are connected by the latch portion 10b of one substrate 10 being engaged with the slot 10a of the other substrate 10, thereby limiting relative movement or movement away from each other between any two adjacent substrates 10. When the user produces the magnetic core structure 100, the layout of the substrates 10 can be planned on the sheet material, and the area of the substrates 10 is equal to or less than half the area of the magnetic core structure 100 in the prior art. Therefore, part of the sheet material that does not meet the area of the prior art magnetic core structure 100 is effectively utilized, and some corners of the sheet material are effectively utilized, further reducing resource waste. In addition, several magnetic core structures 100 are stacked in sequence, and after the coil is wound around the magnetic core structure 100, they are installed on the stator body of the stator assembly. Exemplarily, the number of substrates 10 is 2, 3, 4, 6, 12 or 18.

[0025] The cross-sectional area of the card slot 10a gradually increases along the depth direction of the card slot 10a; and / or the cross-sectional area of the card portion 10b gradually increases along the extension direction of the card portion 10b. Optionally, the cross-sectional area of the card portion 10b is trapezoidal along the direction from one substrate 10 to the other substrate 10.

[0026] The end-to-end connected substrates 10 together enclose a sleeve hole 10c, which fits within the stator assembly's stator body to securely connect the magnetic core structure 100 to the stator body. Optionally, sleeve hole 10c satisfies the following equation: D1:D2 = 0.74-0.78, where D1 is the outer diameter of the magnetic core structure 100 and D2 is the diameter ratio of sleeve hole 10c. Optionally, the outer diameter D1 of the magnetic core structure 100 is 154-157 mm, and the diameter ratio D2 of sleeve hole 10c is 116-119 mm.

[0027] The substrate 10 includes an arcuate portion 11, extending from a first wide portion 12 and a second wide portion 13. A portion of the first wide portion 12 extends into the sleeve hole 10c, a portion of the latching groove 10a is provided in the arcuate portion 11, and another portion of the latching groove 10a is provided in the first wide portion 12. A portion of the second wide portion 13 extends into the sleeve hole 10c, a portion of the latching portion 10b is provided in the arcuate portion 11, and another portion of the latching portion 10b is provided in the second wide portion 13.

[0028] The substrate 10 further includes a plurality of teeth 14 spaced apart along the circumferential direction of the arcuate portion 11. Partial coils are wound around the teeth 14. Any two adjacent teeth 14 and the arcuate portion 11 together form a gap 10d. This gap 10d is used to accommodate multiple coils and facilitates heat dissipation within the magnetic core structure 100. Optionally, the arcuate portion 11 and the teeth 14 satisfy the following conditions: W1 = 4.3-4.9 mm, W2:D1 = 0.95-0.97, and W3 = 2.5-3 mm, where W1 is the width of the teeth 14, W2 is the maximum distance between two opposing and symmetrical teeth 14, and W3 is the distance through the arcuate portion 11 along the radial direction of the ferrule 10c.

[0029] A first limiting portion 15 is provided at one end of the tooth portion 14 away from the arc-shaped portion 11 , and a portion of the first limiting portion 15 extends into the gap 10 d . The first limiting portion 15 can limit the movement of the coil.

[0030] In some embodiments, see Figure 2The tooth portion 14 is provided with a first limiting portion 15 and a second limiting portion 16 at one end away from the arc-shaped portion 11. The first limiting portion 15 and the second limiting portion 16 are arranged opposite to each other, with a portion of the first limiting portion 15 extending into the gap 10d and a portion of the second limiting portion 16 extending into the gap 10d. The first limiting portion 15 and the second limiting portion 16 restrict the movement of the coil, reducing the risk of the coil detaching from the tooth portion 14. Optionally, the tooth portion 14, the first limiting portion 15 and the second limiting portion 16 satisfy the following conditions: W4 = 4.1 to 4.2 mm, L = 15 to 18 mm, where W4 is the shortest distance between the first limiting portion 15 and the second limiting portion 16, and L is the sum of the distances of the ferrule 10c passing through the tooth portion 14 and the first limiting portion 15 in the radial direction, or the sum of the distances of the ferrule 10c passing through the tooth portion 14 and the second limiting portion 16 in the radial direction.

[0031] In an embodiment of the present application, a magnetic core structure 100 is provided. The magnetic core structure 100 includes at least two substrates 10 connected end to end. A card slot 10a is provided at one end of the substrate 10, and a card portion 10b extends from the other end of the substrate 10. Any two adjacent substrates 10 are connected by the card portion 10b of one substrate 10 being engaged with the card slot 10a of the other substrate 10, so as to limit the relative movement or back-to-back movement between any two adjacent substrates 10. When the user produces the magnetic core structure 100, the layout of the substrate 10 can be planned on the plate, and the area of the substrate 10 is equal to or less than half the area of the magnetic core structure of the prior art. Therefore, part of the plate that does not meet the area of the magnetic core structure 100 of the prior art is effectively utilized, and some corners of the plate are effectively utilized, further reducing resource waste.

[0032] The present invention further provides a motor embodiment, comprising a rotor assembly, a stator assembly, and a housing. The stator assembly and the rotor assembly are both disposed within the housing. The stator assembly comprises a coil and a plurality of stacked magnetic core structures 100, with the coil wound around the plurality of magnetic core structures 100. The specific structure and function of the magnetic core structures 100 can be found in the above embodiments and will not be detailed here.

[0033] It should be noted that the preferred embodiments of the present invention are given in the specification and drawings of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments do not serve as additional limitations on the content of the present invention. The purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all considered to be within the scope of the description of the present invention; further, it is obvious to those skilled in the art that improvements or changes can be made based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A magnetic core structure, characterized in that: include: At least two substrates are connected end to end, with a slot provided at one end of each substrate and a latch extending from the other end. Any two adjacent substrates are secured by the latch of one substrate being engaged with the slot of the other substrate to restrict relative movement or movement away from each other.

2. The magnetic core structure according to claim 1, characterized in that: The cross-sectional area of the clamping slot gradually increases along the depth direction of the clamping slot; and / or the cross-sectional area of the clamping portion gradually increases along the extending direction of the clamping portion.

3. The magnetic core structure according to claim 2, characterized in that: Along a direction from one substrate to the other substrate, a cross section of the clamping portion is trapezoidal.

4. The magnetic core structure according to claim 1, characterized in that: The base plates connected end to end together enclose a hole; The substrate includes an arc portion and a first wide portion extending from the arc portion, part of the first wide portion extends into the sleeve hole, part of the slot is provided in the arc portion, and another part of the slot is provided in the first wide portion.

5. The magnetic core structure according to claim 4, characterized in that: The arcuate portion further extends to have a second wide portion, part of the second wide portion extends into the sleeve hole, part of the clamping portion is arranged on the arcuate portion, and another part of the clamping portion is arranged on the second wide portion.

6. The magnetic core structure according to claim 1, characterized in that: The substrate includes an arc-shaped portion and a plurality of tooth portions, wherein the plurality of tooth portions are arranged at intervals along a circumferential direction of the arc-shaped portion, and the tooth portions are used for winding a portion of the coil.

7. The magnetic core structure according to claim 6, characterized in that: Any two adjacent teeth and the arc-shaped portion together enclose a gap; A first limiting portion is provided at one end of the tooth portion away from the arc-shaped portion, and a portion of the first limiting portion extends into the gap. The first limiting portion is used to limit the movement of the coil.

8. The magnetic core structure according to claim 7, characterized in that: A second limiting portion is provided at one end of the tooth portion away from the arc portion. The first limiting portion and the second limiting portion are arranged opposite to each other, and a portion of the second limiting portion extends into the gap. The second limiting portion is used to limit the movement of the coil.

9. The magnetic core structure according to claim 1, characterized in that: The substrates connected end to end together enclose a sleeve hole, and the sleeve hole satisfies: D1:D2=0.74-0.78; wherein D1 is the outer diameter of the magnetic core structure, and D2 is the diameter ratio of the sleeve hole.

10. A motor, characterized in that: It includes a rotor assembly, a stator assembly and a casing, wherein the stator assembly and the rotor assembly are both arranged in the casing, and the stator assembly includes a coil and a magnetic core structure according to any one of claims 1 to 9, and the coil is wound around the magnetic core structure.

Images