Inductors and Inductor Manufacturing Process

Abstract

The present invention belongs to the technical field of electronic products, and discloses an inductor and an inductor manufacturing process. The inductor includes a substrate and a wire, one side of the substrate has a winding portion, and the other side has a stabilizing portion, a containing space is formed between the stabilizing portion and the substrate, and a side of the stabilizing portion away from the substrate forms a stabilizing plane for hot pressing; the wire is wound around the winding portion, part of the wire bypasses the substrate and is fixed in the containing space, and the thickness of the wire is less than or equal to the depth of the containing space. In this way, during the production and manufacturing process of the inductor, the wire can be placed in the containing space, so that the wire will not protrude from the stabilizing plane during the hot pressing process, ensuring that the wire will not deflect during the hot pressing process, so as to effectively ensure the good performance and stability of the inductor and reduce the possibility of inductor failure.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic products, and in particular to an inductor and an inductor manufacturing process. Background Art

[0002] In electronic products, such as smartphones and smart watches, their internal core structures involve small inductors, which are passive electronic components used to store magnetic energy.

[0003] In the prior art, an inductor includes a substrate and a wire disposed on the substrate. The substrate is formed by stamping a powder raw material through a mold, and then the wire is wound on the substrate, and then hot-pressed again, thereby generating a small inductor.

[0004] However, during the hot pressing process, due to the winding of the wire, the wire and the substrate surface are not in the same plane, so inclination is likely to occur during the hot pressing process, resulting in overall eccentricity of the wire, causing poor performance and stability of the product after hot pressing, and even inductor failure. Summary of the invention

[0005] The purpose of the present invention is to provide an inductor and an inductor manufacturing process to solve the problem in the prior art that the wire is easily eccentric during hot pressing during the production process of the inductor, resulting in poor stability of product performance and even inductor failure.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present application provides an inductor, comprising:

[0008] A substrate, wherein one side of the substrate has a winding portion, and the other side of the substrate has a stabilizing portion, a containing space is formed between the stabilizing portion and the substrate, and a side of the stabilizing portion away from the substrate forms a stabilizing plane for hot pressing;

[0009] A wire is wound around the winding portion, a portion of the wire is wound around the base and fixed in the accommodation space, and a thickness of the wire is less than or equal to a depth of the accommodation space.

[0010] Optionally, the stabilizing plane is flush with an outer side wall of the wire in the accommodating space.

[0011] Optionally, the stabilizing portion is block-shaped and can extend along the length direction or the width direction of the substrate.

[0012] Optionally, the stabilizing portion comprises:

[0013] A first stabilizing block extending along a first direction;

[0014] The second stabilizing block extends along a second direction and is fixedly connected to the first stabilizing block. The second direction intersects with the first direction. The first stabilizing block, the second stabilizing block and the base enclose the accommodation space.

[0015] Optionally, the first direction is perpendicular to the second direction.

[0016] Optionally, along the first direction, the second stabilizing block is located at a middle position of the first stabilizing block, and a size of the second stabilizing block is smaller than a size of the first stabilizing block, so as to form an accommodation space on both sides of the second stabilizing block.

[0017] Optionally, a side surface of the first stabilizing block is flush with a side surface of the base.

[0018] Optionally, the base has a notch, and the wire bypasses the notch and extends into the accommodating space.

[0019] Optionally, the depth of the notch is greater than or equal to the thickness of the wire.

[0020] In a second aspect, the present application further provides an inductor manufacturing process, which is used to manufacture the inductor as described in any one of the first aspects, and comprises:

[0021] Obtaining powder material and punching it to form the base and the winding portion;

[0022] Obtaining the stabilizing portion, and stamping it onto a side of the substrate away from the winding portion to form the accommodating space and the stabilizing plane;

[0023] The wire is wound on the winding part, and a part of the wire is fixed in the accommodating space, and then a heat pressing treatment is performed.

[0024] Beneficial effects of the present invention:

[0025] On the one hand, by setting a stabilizing portion on the side of the substrate and forming a stabilizing plane, the stabilizing plane can form a surface contact with the corresponding plane during hot pressing, and the wire is kept in the accommodation space, thereby ensuring that the substrate and the wire can be evenly stressed. In this way, during the production process of the inductor, the wire can be placed in the accommodation space, so that the wire will not protrude from the stabilizing plane during the hot pressing process, ensuring that the wire will not deflect during the hot pressing process, so as to effectively ensure the good performance and stability of the inductor and reduce the possibility of inductor failure.

[0026] Secondly, when the inductor is manufactured by this process, the wire can be placed in the accommodating space before the hot pressing process. During the hot pressing, the equipment is pressed against the stable plane. On the one hand, it can ensure that the wire will not protrude from the stable plane. On the other hand, it can also increase the contact area between the substrate and the hot pressing structure, and improve the hot pressing effect. As a result, the wire of the inductor manufactured by this process will not be displaced, thereby ensuring that the performance and stability of the inductor are better, and the possibility of inductor failure is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of an inductor and a winding part in an embodiment of the present invention;

[0028] Figure 2 is a schematic diagram of the structure of the inductor and the stabilizing unit in an embodiment of the present invention;

[0029] Figure 3 is a schematic diagram of the structure of the inductor after the wire is hidden in the embodiment of the present invention;

[0030] Figure 4 1 is a schematic diagram of the process flow of an inductor manufacturing process in an embodiment of the present invention.

[0031] In the figure:

[0032] 1. Base; 11. Winding part; 12. Notch; 2. Wire; 3. Stabilizing part; 31. Stabilizing plane; 32. Accommodating space; 33. First stabilizing block; 34. Second stabilizing block; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0034] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0037] The embodiments of the present application disclose an inductor and an inductor manufacturing process.

[0038] Reference Figures 1 to 3 The inductor includes a substrate 1 and a wire 2. The substrate 1 has a winding portion 11 on one side and a stabilizing portion 3 on the other side. A receiving space 32 is formed between the stabilizing portion 3 and the substrate 1. A stabilizing plane 31 for hot pressing is formed on the side of the stabilizing portion 3 away from the substrate 1. The wire 2 is wound around the winding portion 11, and a portion of the wire 2 is wound around the substrate 1 and fixed in the receiving space 32. The thickness of the wire 2 is less than or equal to the depth of the receiving space 32.

[0039] Specifically, the substrate 1 is made by stamping a powder material, and the powder material has an appropriate magnetic permeability and particle size distribution. A protrusion is formed in the middle position of one side of the substrate 1, and the protrusion is elliptical to serve as a winding portion 11, and the middle part of the wire 2 is wound on the winding portion 11. A protrusion can be set on the other side of the substrate 1 as a stabilizing portion 3, and the stabilizing portion 3 and the substrate 1 can be formed into an integrated structure by stamping. The stabilizing portion 3 can be trapezoidal, triangular, convex, etc., so that the side of the stabilizing portion 3 away from the substrate 1 is planar, and the side serves as a stabilizing plane 31, and the size of the stabilizing portion 3 is smaller than the size of the substrate 1, so that a receiving space 32 can also be formed between the stabilizing portion 3 and the substrate 1, and the two ends of the wire 2 can be fixed in the receiving space 32. The height of the stabilizing portion 3 can be greater than or equal to the thickness of the wire 2, so that the wire 2 can be completely placed in the receiving space 32.

[0040] By arranging the stabilizing portion 3 on the side of the substrate 1 and forming a stabilizing plane 31, the stabilizing plane 31 can form a surface contact with the corresponding plane during hot pressing, and the wire 2 is kept in the accommodating space 32, thereby ensuring that the substrate 1 and the wire 2 can be evenly stressed. In this way, during the production process of the inductor, the wire 2 can be placed in the accommodating space 32, so that the wire 2 will not protrude from the stabilizing plane 31 during the hot pressing process, ensuring that the wire 2 will not deflect during the hot pressing process, so as to effectively ensure the good performance and stability of the inductor and reduce the possibility of inductor failure.

[0041] Optionally, the stabilizing plane 31 is flush with an outer side wall of the wire 2 in the accommodating space 32 .

[0042] Specifically, the depth of the accommodating space 32 is the same as the thickness of the wire 2, so that after the wire 2 is placed in the accommodating space 32, one side of the wire 2 is in contact with the surface of the substrate 1, while the other side remains flush with the stabilizing plane 31, thereby ensuring uniform force during the hot pressing process.

[0043] Optionally, the stabilizing portion 3 is block-shaped and can extend along the length direction or the width direction of the base 1 .

[0044] Specifically, the base 1 is rectangular, and the stabilizing portion 3 can partially extend along the length direction of the base 1, and the rest of the stabilizing portion 3 can extend along the width direction of the base 1, so as to smoothly enclose the base 1 to form a receiving space 32. The specific extension length and position relative to the base 1 can be designed according to the actual application scenario.

[0045] Optionally, the stabilizing portion 3 includes a first stabilizing block 33 and a second stabilizing block 34. The first stabilizing block 33 extends along a first direction X; the second stabilizing block 34 extends along a second direction Y and is fixedly connected to the first stabilizing block 33, the second direction Y intersects the first direction X, and the first stabilizing block 33, the second stabilizing block 34 and the base 1 enclose a receiving space 32.

[0046] Specifically, the first stabilizing block 33 and the second stabilizing block 34 can be integrally pressed and then stamped on the side of the base 1. The second direction Y intersects with the first direction X, and the angle between the two is greater than 0° and less than 90°. In this embodiment, the first direction X is perpendicular to the second direction Y, and the first direction X is the width direction of the base 1. The shape of the specific stabilizing portion 3 can be designed according to the actual position where the wire 2 needs to be placed.

[0047] In this embodiment, along the first direction X, the second stabilizing block 34 is located at the middle position of the first stabilizing block 33, and the size of the second stabilizing block 34 is smaller than that of the first stabilizing block 33, so that a receiving space 32 is formed on both sides of the second stabilizing block 34, so that the first stabilizing block 33 and the second stabilizing block 34 form a convex stabilizing portion 3.

[0048] Optionally, a side surface of the first stabilizing block 33 is flush with a side surface of the substrate 1 .

[0049] Specifically, the dimension of the first stabilizing block 33 along the first direction X is equal to the width of the substrate 1, so that the two opposite sides of the first stabilizing block 33 are flush with the side surfaces of the substrate 1, and the side surfaces of the first stabilizing block 33 away from the second stabilizing block 34 are also flush with the side surfaces of the substrate 1, so that the stabilizing portion 3 as a whole can form a larger stabilizing plane 31, thereby increasing the force-bearing area of ​​the substrate 1 during the hot pressing process.

[0050] Optionally, the substrate 1 has a notch 12, and the wire 2 bypasses the notch 12 and extends into the accommodating space 32. The depth of the notch 12 is greater than or equal to the thickness of the wire 2.

[0051] Specifically, the notch 12 is provided on the side of the substrate 1 and near the corner, and the depth of the notch 12 may be greater than or equal to the thickness of the wire 2, so that the wire 2 can pass through the notch 12 when passing around the substrate 1. In this embodiment, the depth of the notch 12 is equal to the thickness of the wire 2.

[0052] Reference Figure 4 The inductor manufacturing process is used to manufacture the inductor in the above embodiment. The inductor manufacturing process includes:

[0053] Step S1 : obtaining powder material and punching it to form a base 1 and a winding portion 11 .

[0054] Step S2: obtaining the stabilizing portion 3 and stamping it onto a side of the substrate 1 away from the winding portion 11 to form a receiving space 32 and a stabilizing plane 31;

[0055] Step S3: Wind the wire 2 on the winding portion 11, and fix part of the wire 2 in the accommodating space 32, and then perform a heat pressing process.

[0056] When manufacturing an inductor through the above steps S1 to S3, the wire 2 can be placed in the accommodating space 32 before the hot pressing process. During the hot pressing, the device is pressed against the stable plane 31. On the one hand, it can ensure that the wire 2 does not protrude from the stable plane 31, and on the other hand, it can also increase the contact area between the substrate 1 and the hot pressing structure, improve the hot pressing effect, so that the wire 2 of the inductor manufactured by this process will not be displaced, thereby ensuring that the performance and stability of the inductor are better, and the possibility of inductor failure is lower.

[0057] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Inductor, characterized in that include: A substrate (1), wherein one side of the substrate (1) has a winding portion (11), and the other side has a stabilizing portion (3), a receiving space (32) is formed between the stabilizing portion (3) and the substrate (1), and a side of the stabilizing portion (3) away from the substrate (1) forms a stabilizing plane (31) for hot pressing; A wire (2) is wound around the winding portion (11), a portion of the wire (2) is wound around the base (1) and fixed in the accommodating space (32), and the thickness of the wire (2) is less than or equal to the depth of the accommodating space (32).

2. The inductor according to claim 1, characterized in that: The stabilizing plane (31) is flush with the outer side wall of the wire (2) in the accommodating space (32).

3. The inductor according to claim 1, characterized in that: The stabilizing portion (3) is block-shaped and can extend along the length direction or the width direction of the base (1).

4. The inductor according to claim 1, characterized in that: The stabilizing portion (3) comprises: A first stabilizing block (33) extending along a first direction (X); The second stabilizing block (34) extends along a second direction (Y) and is fixedly connected to the first stabilizing block (33); the second direction (Y) intersects with the first direction (X); the first stabilizing block (33), the second stabilizing block (34) and the base (1) enclose the accommodating space (32).

5. The inductor according to claim 4, characterized in that: The first direction (X) is perpendicular to the second direction (Y).

6. The inductor according to claim 4, characterized in that: Along the first direction (X), the second stabilizing block (34) is located at a middle position of the first stabilizing block (33), and the size of the second stabilizing block (34) is smaller than the size of the first stabilizing block (33), so as to form a receiving space (32) on both sides of the second stabilizing block (34).

7. The inductor according to claim 4, characterized in that: The side surface of the first stabilizing block (33) is flush with the side surface of the base (1).

8. The inductor according to any one of claims 1 to 7, characterized in that: The base (1) has a notch (12), and the wire (2) bypasses the notch (12) and extends into the accommodating space (32).

9. The inductor according to claim 8, characterized in that: The depth of the notch (12) is greater than or equal to the thickness of the wire (2).

10. An inductor manufacturing process, characterized in that: For manufacturing an inductor as claimed in any one of claims 1 to 9, comprising: Obtaining powder material and punching it to form the base (1) and the winding portion (11); Obtaining the stabilizing portion (3), and stamping it onto a side of the base (1) away from the winding portion (11) to form the accommodating space (32) and the stabilizing plane (31); The wire (2) is wound on the winding portion (11), and a portion of the wire (2) is fixed in the accommodating space (32), and then subjected to a heat pressing treatment.

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