Electromagnetic conversion device

Abstract

The utility model discloses an electromagnetic conversion device, which is characterized by comprising a base, at least one micro-coil element, at least one main magnetic element and at least one auxiliary magnetic element, each micro-coil element is movably matched with the base, each micro-coil element comprises a substrate and at least one coil unit matched with the substrate, and the substrate of each micro-coil element is provided with through holes of which the number is the same as that of the coil units of the micro-coil element; each coil unit of the micro-coil element respectively surrounds each through hole of the substrate of the micro-coil element, and each coil unit is provided with at least one circle of conductive line segment; the number of the main magnetic elements is the same as the total number of the through holes of all the micro-coil elements, each main magnetic element is fixedly matched with the base, and each main magnetic element is arranged in each through hole of each micro-coil element in a penetrating manner; each auxiliary magnetic element is fixedly matched with the base, and each auxiliary magnetic element is located on the side of each micro-coil element. According to the utility model, the driving effect on the micro-coil element can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of electromagnetic conversion devices, in particular to an electromagnetic conversion device. Background Art

[0002] An electromagnetic conversion device is a device that uses the interaction between the magnetic field generated by a powered coil element and the magnetic field generated by a magnetic element to drive the powered coil element to operate.

[0003] Electromagnetic conversion devices are widely used. For example, electromagnetic conversion devices can be applied to speakers to drive the diaphragm to vibrate and drive the speakers to make sounds. Electromagnetic conversion devices can also be applied to solenoid valves to drive the valve core to move and drive the solenoid valve to open and close.

[0004] The coil elements of the existing electromagnetic conversion devices generally adopt coil windings made of metal wires. Such coil windings are large in size and heavy in weight, which causes the electromagnetic conversion device to have large size and heavy weight.

[0005] In order to overcome the defects of coil windings, some people have developed micro-coil elements. Micro-coil elements are conductive wire segments formed on a substrate using semiconductor technology. The volume and weight of micro-coil elements can be effectively reduced compared to coil windings, thereby effectively reducing the volume and weight of electromagnetic conversion devices. However, the existing micro-coil elements are complete sheet structures, which means that the magnetic elements can only be arranged on the side of the micro-coil elements, affecting the effect of the magnetic elements on the micro-coil elements, resulting in poor driving effect on the micro-coil elements.

[0006] In view of the existence of the above problems, it is necessary to study an electromagnetic conversion device that can effectively improve the driving effect of the micro-coil element. Utility Model Content

[0007] The utility model aims to provide an electromagnetic conversion device, which can effectively improve the driving effect of a micro-coil element.

[0008] In order to achieve the above purpose, the solution of the utility model is:

[0009] An electromagnetic conversion device, which specifically includes a base, at least one microcoil element, at least one main magnetic element, and at least one secondary magnetic element; each microcoil element is movably matched with the base, the microcoil element includes a substrate and at least one coil unit matched with the substrate, the substrate of the microcoil element is provided with through holes with the same number as the coil units of the microcoil element, each coil unit of the microcoil element respectively surrounds each through hole of the substrate of the microcoil element, and the coil unit has at least one circle of conductive wire segments; the number of main magnetic elements is the same as the total number of through holes of all microcoil elements, each main magnetic element is fixedly matched with the base, and each main magnetic element is respectively inserted into each through hole of each microcoil element; each secondary magnetic element is fixedly matched with the base, and each secondary magnetic element is located on the side of each microcoil element.

[0010] The number of the auxiliary magnetic elements is the same as the number of the main magnetic elements. Each magnetic element is arranged opposite to each main magnetic element in the axial direction of the main magnetic element. Each auxiliary magnetic element is connected to each main magnetic element.

[0011] The number of the secondary magnetic elements is the same as the number of the micro-coil elements, and each secondary magnetic element is arranged opposite to each micro-coil element in the axial direction of the micro-coil element; each secondary magnetic element is connected to the main magnetic element passing through the through hole of the micro-coil element opposite to the secondary magnetic element.

[0012] The through hole is a rectangular hole, a triangular hole, a circular hole or an elliptical hole.

[0013] The number of the secondary magnetic elements is at least two, and each secondary magnetic element is arranged around each micro-coil element.

[0014] The number of the micro-coil elements is at least two, and an intermediate magnetic element is arranged between adjacent micro-coil elements.

[0015] The number of the coil units of the micro-coil element is at least two, and the coil units of the micro-coil element are connected in series and / or in parallel.

[0016] The number of the coil units of the micro-coil element is at least two, and each coil unit of the micro-coil element is independently arranged.

[0017] The minimum distance between the main magnetic element and the micro-coil element is greater than 1 um, and the minimum distance between the secondary magnetic element and the micro-coil element is greater than 1 um.

[0018] The material of the main magnetic element is a soft magnetic material or a hard magnetic material, and the material of the auxiliary magnetic element is a soft magnetic material or a hard magnetic material.

[0019] After adopting the above scheme, the utility model sets through holes on the substrate of the micro-coil element corresponding to the coil units, and each coil unit of the micro-coil element surrounds each through hole of the substrate of the micro-coil element respectively, and at the same time, a main magnetic element is inserted in the through hole, so that the magnetic lines of force of the main magnetic element can all pass through the corresponding coil unit, so that the energized coil unit is subjected to a large Ampere force generated by the main magnetic element, that is, the main magnetic element has a strong effect on the micro-coil element, thereby effectively improving the driving effect on the micro-coil element; and the main magnetic element is inserted in the through hole of the micro-coil element, so that the main magnetic element and the micro-coil element have overlapping installation space, which helps to reduce the volume of the electromagnetic conversion device. In addition, the utility model also sets a secondary magnetic element on the side of the micro-coil element, so that the energized coil unit will also be subjected to the Ampere force generated by the secondary magnetic element, which can further improve the driving effect on the micro-coil element. In addition, the utility model sets through holes on the substrate of the micro-coil element corresponding to the coil unit, which can effectively reduce the weight of the micro-coil element and help reduce the weight of the electromagnetic conversion device. The through holes can also provide air circulation to dissipate heat, effectively reducing the temperature of the micro-coil element when powered on. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural exploded view of the first embodiment of the present utility model.

[0021] Figure 2 This is a schematic structural diagram of the first embodiment of the present utility model.

[0022] Figure 3 It is a cross-sectional view of the first embodiment of the present utility model.

[0023] Figure 4 This is a structural exploded view of the second embodiment of the present utility model.

[0024] Figure 5 This is a schematic structural diagram of the second embodiment of the present utility model.

[0025] Figure 6 It is a cross-sectional view of the second embodiment of the present utility model.

[0026] Figure 7 This is a structural exploded view of the third embodiment of the present utility model.

[0027] Figure 8 This is a schematic structural diagram of the third embodiment of the present utility model.

[0028] Fig. 9 It is a cross-sectional view of the third embodiment of the present utility model.

[0029] Fig.10 This is a structural exploded view of the fourth embodiment of the present utility model.

[0030] Fig.11 This is a schematic structural diagram of the fourth embodiment of the present utility model.

[0031] Fig.12 It is a cross-sectional view of the fourth embodiment of the present utility model.

[0032] Fig.13 This is a structural exploded view of the fifth embodiment of the present utility model.

[0033] Fig.14 This is a schematic structural diagram of Embodiment 5 of the present utility model.

[0034] Fig.15 It is a cross-sectional view of the fifth embodiment of the present utility model.

[0035] Fig.16 The structural decomposition of the sixth embodiment of the utility model Figure 1 .

[0036] Fig.17 The structure of the sixth embodiment of the present utility model is shown in FIG. Figure 1 .

[0037] Fig.18 The structure of the sixth embodiment of the present utility model is shown in FIG. Figure 2 .

[0038] Fig.19 It is a cross-sectional view of the sixth embodiment of the present utility model.

[0039] Fig. 20 The structural decomposition of the seventh embodiment of the utility model Figure 1 .

[0040] Fig.21 The structure of the seventh embodiment of the present utility model is shown in FIG. Figure 1 .

[0041] Fig. 22 The structure of the seventh embodiment of the present utility model is shown in FIG. Figure 2 .

[0042] Fig.23 It is a cross-sectional view of the seventh embodiment of the present utility model.

[0043] Description of labels:

[0044] Base 1,

[0045] Micro coil element 2, substrate 21, through hole 211, coil unit 22,

[0046] Main magnetic element 3,

[0047] Auxiliary magnetic element 4,

[0048] Intermediate magnetic element 5. DETAILED DESCRIPTION

[0049] like Figures 1 to 23 As shown, the utility model discloses an electromagnetic conversion device, which includes a base 1, at least one micro-coil element 2, at least one main magnetic element 3, and at least one secondary magnetic element 4; each micro-coil element 2 is movably matched with the base 1, the micro-coil element 2 includes a substrate 21 and at least one coil unit 22 matched with the substrate 21, the substrate 21 of the micro-coil element 2 is provided with through holes 211 the same number as the coil units 22 of the micro-coil element, each coil unit 22 of the micro-coil element 2 respectively surrounds each through hole 211 of the substrate 21 of the micro-coil element 2, and the coil unit 22 has at least one circle of conductive wire segments; the number of main magnetic elements 3 is the same as the total number of through holes 211 of all micro-coil elements 2, each main magnetic element 3 is fixedly matched with the base 1, and each main magnetic element 3 is respectively inserted into each through hole 211 of each micro-coil element 2; each secondary magnetic element 4 is fixedly matched with the base 1, and each secondary magnetic element 4 is located on the side of each micro-coil element 2. The specific structure in which the micro-coil element 2 is movably matched with the base 1 is prior art and will not be described in detail here.

[0050] In the present invention, a through hole 211 is provided on the substrate 21 of the micro-coil element 2 corresponding to the coil unit 22, and each coil unit 22 of the micro-coil element 2 surrounds each through hole 211 of the substrate 21 of the micro-coil element 2, and a main magnetic element 3 is inserted in the through hole 211, so that the magnetic force lines of the main magnetic element 3 can all pass through the corresponding coil unit 22, so that the energized coil unit 22 is subjected to a large Ampere force generated by the main magnetic element 3, that is, the main magnetic element 3 has a strong effect on the micro-coil element 2, thereby effectively improving the driving effect on the micro-coil element 2; and the main magnetic element 3 is inserted in the through hole 211 of the micro-coil element 2, so that the main magnetic element 3 and the micro-coil element 2 have an overlapping installation space, which helps to reduce the volume of the electromagnetic conversion device. In addition, the present invention also provides a secondary magnetic element 4 on the side of the micro-coil element 2, so that the energized coil unit 22 is also subjected to the Ampere force generated by the secondary magnetic element 4, which can further improve the driving effect on the micro-coil element 2. In addition, the utility model sets a through hole 211 on the substrate 21 of the micro-coil element 2 corresponding to the coil unit 22, which can effectively reduce the weight of the micro-coil element 2 and help reduce the weight of the electromagnetic conversion device. The through hole 211 can also provide air circulation to dissipate heat, effectively reducing the temperature of the micro-coil element 2 when powered on.

[0051] In the utility model, the through hole 211 of the micro-coil element 2 can be formed by cutting the substrate 21 by CNC cutting, laser cutting or saw blade cutting; the shape of the through hole 211 can be set as needed, and the through hole 211 can be a rectangular hole, a triangular hole, a circular hole or an elliptical hole.

[0052] In the present invention, when the number of coil units 22 of the micro-coil element 2 is at least two, each coil unit 22 of the micro-coil element 2 can be arranged in series and / or in parallel, so that the impedance of the micro-coil element 2 can be flexibly adjusted by controlling the connection mode of each coil unit 22 of the micro-coil element 2. It should be noted that when the number of coil units 22 of the micro-coil element 2 is at least two, each coil unit 22 of the micro-coil element 2 can also be independently arranged, so that each coil unit 22 of the micro-coil element 2 can be independently powered on.

[0053] In the present invention, the minimum distance between the main magnetic element 3 and the micro coil element 2 is greater than 1um, and the minimum distance between the auxiliary magnetic element 4 and the micro coil element 2 is greater than 1um. The material of the main magnetic element 3 is a soft magnetic material or a hard magnetic material, and the material of the auxiliary magnetic element 4 is a soft magnetic material or a hard magnetic material.

[0054] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0055] Embodiment 1

[0056] Cooperate Figures 1 to 3 As shown, in the first embodiment of the present invention, the number of the secondary magnetic elements 4 is the same as the number of the main magnetic elements 3, and each magnetic element and each main magnetic element 3 are arranged relative to each other in the axial direction of the main magnetic element 3; the present invention is arranged in this way, so that the magnetic lines of force of the secondary magnetic elements 4 can pass through more corresponding coil units 22, so that the secondary magnetic elements 4 have a stronger effect on the micro coil element 2, thereby effectively improving the driving effect on the micro coil element 2. Among them, each secondary magnetic element 4 can be connected to each main magnetic element 3, so that the main magnetic element 3 is fixedly matched to the base 1 through the secondary magnetic elements 4 connected to the main magnetic element 3.

[0057] Cooperate Figures 1 to 3 As shown, in the first embodiment of the present utility model, specifically, the number of the micro-coil element 2 is one, the number of the coil unit 22 of the micro-coil element 2 is one, the number of the through hole 211 of the micro-coil element 2 is one, the through hole 211 of the micro-coil element 2 is a rectangular hole, and the number of the main magnetic element 3 and the secondary magnetic element 4 are also one.

[0058] Embodiment 2

[0059] Cooperate Figures 4 to 6 As shown, in the second embodiment of the present invention, the number of the secondary magnetic elements 4 is the same as the number of the main magnetic elements 3, and each magnetic element and each main magnetic element 3 are arranged relative to each other in the axial direction of the main magnetic element 3, so that the secondary magnetic element 4 has a stronger effect on the micro-coil element 2, thereby effectively improving the driving effect on the micro-coil element 2. Similarly, each secondary magnetic element 4 can be connected to each main magnetic element 3, so that the main magnetic element 3 is fixedly matched to the base 1 through the secondary magnetic element 4 connected to the main magnetic element 3, which helps to make the structure of the electromagnetic conversion device of the present invention more compact.

[0060] Cooperate Figures 4 to 6 As shown, in the second embodiment of the present utility model, specifically, the number of the micro-coil element 2 is one, the number of the coil units 22 of the micro-coil element 2 is four, the number of the through holes 211 of the micro-coil element 2 is four, the through holes 211 of the micro-coil element 2 are all rectangular holes, and the number of the main magnetic element 3 and the number of the auxiliary magnetic element 4 are both four.

[0061] Embodiment 3

[0062] Cooperate Figures 7 to 9 As shown, in the third embodiment of the present invention, the number of the secondary magnetic elements 4 is the same as the number of the micro-coil elements 2, and each secondary magnetic element 4 is arranged opposite to each micro-coil element 2 in the axial direction of the micro-coil element 2; the present invention is arranged in this way, so that the secondary magnetic element 4 and the main magnetic element 3 passing through the through hole 211 of the micro-coil element 2 opposite to the secondary magnetic element 4 can interact with each other, which helps to improve the overall magnetic field strength, thereby effectively improving the driving effect on the micro-coil element 2. Among them, each secondary magnetic element 4 is connected to the main magnetic element 3 passing through the through hole 211 of the micro-coil element 2 opposite to the secondary magnetic element 4, which helps to make the structure of the electromagnetic conversion device of the present invention more compact.

[0063] Cooperate Figures 7 to 9 As shown, in the third embodiment of the present utility model, specifically, the number of the micro-coil element 2 is one, the number of the coil units 22 of the micro-coil element 2 is four, the number of the through holes 211 of the micro-coil element 2 is four, the through holes 211 of the micro-coil element 2 are all rectangular holes, the number of the main magnetic elements 3 is four, and the number of the secondary magnetic element 4 is one.

[0064] Embodiment 4

[0065] Cooperate Figures 10 to 12As shown, in the fourth embodiment of the present invention, the number of the secondary magnetic elements 4 is the same as the number of the main magnetic elements 3, and each magnetic element and each main magnetic element 3 are arranged relative to each other in the axial direction of the main magnetic element 3, so that the secondary magnetic element 4 has a stronger effect on the micro-coil element 2, thereby effectively improving the driving effect on the micro-coil element 2. Similarly, each secondary magnetic element 4 can be connected to each main magnetic element 3, so that the main magnetic element 3 is fixedly matched to the base 1 through the secondary magnetic element 4 connected to the main magnetic element 3, which helps to make the structure of the electromagnetic conversion device of the present invention more compact.

[0066] Cooperate Figures 10 to 12 As shown, in the fourth embodiment of the present utility model, specifically, the number of the micro-coil element 2 is one, the number of the coil units 22 of the micro-coil element 2 is three, the number of the through holes 211 of the micro-coil element 2 is three, the three through holes 211 of the micro-coil element 2 are respectively a rectangular hole, a triangular hole and an elliptical hole, and the number of the main magnetic element 3 and the number of the auxiliary magnetic element 4 are both three.

[0067] Embodiment 5

[0068] Cooperate Figures 13 to 15 As shown, in the fifth embodiment of the present invention, the number of the secondary magnetic elements 4 is the same as the number of the micro-coil elements 2, and each secondary magnetic element 4 and each micro-coil element 2 are respectively arranged opposite to each other in the axial direction of the micro-coil element 2, and each secondary magnetic element 4 is connected to the main magnetic element 3 passing through the through hole 211 of the micro-coil element 2 opposite to the secondary magnetic element 4, which helps to make the structure of the electromagnetic conversion device of the present invention more compact.

[0069] Cooperate Figures 13 to 15 As shown, in the fifth embodiment of the present utility model, specifically, the number of the micro-coil element 2 is one, the number of the coil units 22 of the micro-coil element 2 is three, the number of the through holes 211 of the micro-coil element 2 is three, the three through holes 211 of the micro-coil element 2 are respectively a rectangular hole, a triangular hole and an elliptical hole, and the number of the main magnetic element 3 and the number of the auxiliary magnetic element 4 are both three.

[0070] Embodiment 6

[0071] Cooperate Figures 16 to 19As shown, in the sixth embodiment of the utility model, the number of the secondary magnetic elements 4 is at least two, and each secondary magnetic element 4 is arranged around each micro-coil element 2; the utility model is arranged in this way, which helps to reduce the volume of the electromagnetic conversion device of the utility model in the axial direction of the micro-coil element 2, so that the electromagnetic conversion device of the utility model can be thinner; at the same time, such a setting can also make each secondary magnetic element 4 interact with each main magnetic element 3, which helps to improve the overall magnetic field strength, thereby effectively improving the driving effect on the micro-coil element 2.

[0072] Cooperate Figures 16 to 19 As shown, in the sixth embodiment of the present utility model, specifically, the number of the micro-coil element 2 is one, the number of the coil unit 22 of the micro-coil element 2 is one, the number of the through hole 211 of the micro-coil element 2 is one, the through hole 211 of the micro-coil element 2 is a rectangular hole, the number of the main magnetic element 3 is one, the number of the secondary magnetic elements 4 is four, and the four secondary magnetic elements 4 are respectively located around the micro-coil element 2.

[0073] Embodiment 7

[0074] Cooperate Figure 20 to Figure 23 As shown, in the seventh embodiment of the present invention, the number of the micro-coil elements 2 is at least two, and an intermediate magnetic element 5 is provided between adjacent micro-coil elements 2; and the number of the secondary magnetic elements 4 is at least two, and each secondary magnetic element 4 is arranged around each micro-coil element 2; the present invention is arranged in this way, which helps to reduce the volume of the electromagnetic conversion device of the present invention in the axial direction of the micro-coil element 2, so that the electromagnetic conversion device of the present invention can be thinner; at the same time, such an arrangement can also make each secondary magnetic element 4 interact with each main magnetic element 3 and each intermediate magnetic element 5, which helps to improve the overall magnetic field strength, thereby effectively improving the driving effect on the micro-coil element 2.

[0075] Cooperate Figure 20 to Figure 23 As shown, in the seventh embodiment of the present utility model, specifically, the number of the micro-coil elements 2 is two, the number of the coil units 22 of the micro-coil element 2 is one, the number of the through hole 211 of the micro-coil element 2 is one, the through hole 211 of the micro-coil element 2 is a rectangular hole, the number of the main magnetic elements 3 is two, the number of the secondary magnetic elements 4 is four, the four secondary magnetic elements 4 are respectively located around the two micro-coil elements 2, the number of the intermediate magnetic element 5 is one and the intermediate magnetic element 5 is located between the two micro-coil elements 2, and the material of the intermediate magnetic element 5 can be a hard magnetic material or a soft magnetic material.

[0076] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. An electromagnetic conversion device, characterized in that: comprising a base, at least one micro-coil element, at least one primary magnetic element, and at least one secondary magnetic element; Each micro-coil element is movably matched with the base, and the micro-coil element includes a substrate and at least one coil unit matched with the substrate, the substrate of the micro-coil element is provided with through holes having the same number as the coil units of the micro-coil element, each coil unit of the micro-coil element surrounds each through hole of the substrate of the micro-coil element, and the coil unit has at least one circle of conductive wire segment; The number of the main magnetic elements is the same as the total number of through holes of all the micro-coil elements, each main magnetic element is fixedly matched to the base, and each main magnetic element is respectively inserted into each through hole of each micro-coil element; Each secondary magnetic element is fixedly matched to the base, and each secondary magnetic element is located on the side of each micro-coil element.

2. An electromagnetic conversion device as claimed in claim 1, characterized in that: The number of the secondary magnetic elements is the same as the number of the main magnetic elements, and each magnetic element is arranged opposite to each main magnetic element in the axial direction of the main magnetic element; Each auxiliary magnetic element is connected to each main magnetic element respectively.

3. An electromagnetic conversion device as claimed in claim 1, characterized in that: The number of the secondary magnetic elements is the same as the number of the micro-coil elements, and each secondary magnetic element and each micro-coil element are arranged opposite to each other in the axial direction of the micro-coil element; Each secondary magnetic element is connected to the main magnetic element passing through a through hole of the micro-coil element opposite to the secondary magnetic element.

4. An electromagnetic conversion device as claimed in claim 1, characterized in that: The through hole is a rectangular hole, a triangular hole, a circular hole or an elliptical hole.

5. An electromagnetic conversion device as claimed in claim 1, characterized in that: The number of the secondary magnetic elements is at least two, and each secondary magnetic element is arranged around each micro-coil element.

6. An electromagnetic conversion device as claimed in claim 1, characterized in that: The number of the micro-coil elements is at least two, and an intermediate magnetic element is arranged between adjacent micro-coil elements.

7. An electromagnetic conversion device as claimed in claim 1, characterized in that: The number of the coil units of the micro-coil element is at least two, and the coil units of the micro-coil element are connected in series and / or in parallel.

8. An electromagnetic conversion device as claimed in claim 1, characterized in that: The number of the coil units of the micro-coil element is at least two, and each coil unit of the micro-coil element is independently arranged.

9. An electromagnetic conversion device as claimed in claim 1, characterized in that: The minimum distance between the main magnetic element and the micro-coil element is greater than 1 um, and the minimum distance between the auxiliary magnetic element and the micro-coil element is greater than 1 um.

10. An electromagnetic conversion device as claimed in claim 1, characterized in that: The material of the main magnetic element is a soft magnetic material or a hard magnetic material, and the material of the auxiliary magnetic element is a soft magnetic material or a hard magnetic material.

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