CN111224528B - Vibration motor and electronic equipment using same - Google Patents
Vibration motor and electronic equipment using same Download PDFInfo
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- CN111224528B CN111224528B CN201811420524.0A CN201811420524A CN111224528B CN 111224528 B CN111224528 B CN 111224528B CN 201811420524 A CN201811420524 A CN 201811420524A CN 111224528 B CN111224528 B CN 111224528B
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- circuit board
- coil
- vibration motor
- bracket
- hole
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
A vibration motor and an electronic device using the same, the vibration motor includes: a bracket; the first rotating piece is arranged on the bracket; the first circuit board is arranged on the bracket and is provided with a conductive element; a magnet disposed on the first circuit board; a rotating assembly, comprising: the second circuit board is provided with a hollow area, the second circuit board is provided with a first surface facing the first circuit board and a second surface opposite to the first surface, and the first surface is provided with a rectifying circuit electrically connected with the conductive element; the second rotating piece is arranged on the second circuit board, and the rotating assembly is rotatably connected with the bracket through the matching of the second rotating piece and the first rotating piece; the first coil is arranged in the hollow area and is electrically connected with the rectifying circuit; the balancing weight is arranged on the second surface; the cover body covers the bracket and the rotating assembly. According to the vibrating motor provided by the invention, the coil is installed by using the circuit board with the hollow design, so that the distance between the coil and the magnet can be reduced, the interaction efficiency of the coil and the magnet is effectively improved, and the size of the vibrating motor is further improved and reduced.
Description
Technical Field
The invention relates to the technical field of motors and electronic products, in particular to a vibration motor and electronic equipment applying the vibration motor.
Background
A general electronic product, such as a mobile phone, has a vibration motor mounted therein, and generates a vibration event through the vibration motor to interact with a user. The vibration motor comprises a coil, a circuit board and a balancing weight, wherein the coil and the balancing weight are usually adhered to the surface of the circuit board through an adhesive and then are integrally molded through injection. However, in the working process of the vibration motor, the counterweight block rotating at high speed can fall off from the circuit board due to poor bonding force of plastics, so that the vibration motor is damaged and cannot work normally.
Disclosure of Invention
In view of the above, it is desirable to provide a vibration motor with a strong bonding, a glue saving and an easy assembly, and an electronic device using the same.
In order to achieve the above object, the present invention provides a vibration motor including: a bracket; the first rotating piece is arranged on the bracket; the first circuit board is arranged on the bracket and is provided with a conductive element; the magnet is arranged on the first circuit board; a rotating assembly, comprising: the second circuit board is provided with a first hollow area, the second circuit board is provided with a first surface facing the first circuit board and a second surface opposite to the first surface, and the first surface is provided with a rectifying circuit electrically connected with the conductive element; the second rotating piece is arranged on the second circuit board, and the rotating assembly is rotatably connected with the bracket through the matching of the second rotating piece and the first rotating piece; the first coil is arranged in the first hollow area and is electrically connected with the rectifying circuit; the balancing weight is arranged on the second surface; and a cover body covering the bracket and the rotating assembly.
According to an embodiment of the present invention, the vibration motor further includes a second coil electrically connected to the rectifying circuit, the second circuit board further includes a second hollow area, the second coil is disposed in the second hollow area, and the weight block is located between the first coil and the second coil.
According to an embodiment of the present invention, the first coil and the second coil extend beyond the first surface.
According to an embodiment of the present invention, the second circuit board, the second rotating member, the weight member, and the first coil and the second coil are integrally formed by injection molding.
According to the vibration motor of an embodiment of the present invention, the first coil directly faces the magnet.
According to an embodiment of the present invention, the bracket includes a first mounting groove, a second mounting groove provided at a bottom wall of the first mounting groove, and a first mounting hole provided at the second mounting groove, the first circuit board is mounted at the second mounting groove, and the magnet covers the first circuit board and is mounted at the first mounting groove.
According to an embodiment of the present invention, the magnet is provided with a first through hole, one end of the first rotating member passes through the first through hole and is mounted to the first mounting hole, and the second rotating member passes through the first through hole and is rotatably mounted to the first rotating member.
According to an embodiment of the present invention, the vibration motor further includes a cover body fastened to the bracket to form an accommodating space with the bracket for accommodating the rotating assembly, the cover body is provided with a second mounting hole, and the other end of the first rotating member away from the bracket is mounted in the second mounting hole.
According to the vibration motor of one embodiment of the present invention, the second mounting groove is convexly provided with a convex pillar, the first mounting hole is disposed on an end surface of the convex pillar, the first circuit board is provided with a second through hole, and the second through hole is sleeved on the convex pillar; the first circuit board is a flexible circuit board.
The invention also provides electronic equipment comprising the vibration motor.
According to the vibrating motor and the electronic equipment applying the vibrating motor, the coil is installed by using the circuit board with the hollow design, so that the distance between the coil and the magnet can be reduced, the interaction efficiency of the coil and the magnet is effectively improved, and the size of the vibrating motor is further reduced.
Drawings
Fig. 1 is a schematic diagram illustrating an exploded structure of a vibration motor according to an embodiment of the present invention.
Fig. 2 is an external view of a first circuit board according to an embodiment of the invention.
Fig. 3 is an external view of a second circuit board according to an embodiment of the invention.
Fig. 4 is an external view of a second circuit board with a coil and a weight according to an embodiment of the invention.
Fig. 5 is a schematic cross-sectional view illustrating a vibration motor according to an embodiment of the present invention.
Description of the main elements
Bracket 111
Convex column 1113
First via 1151
Second through hole 1121
First rotating member 114
Fixing hole 1211
Hollowed-out area 1213
Second rotating member 122
Axial bore 1221
Sleeve 125
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
For the purpose of promoting an understanding and an enabling description of the invention, reference should now be made to the embodiments illustrated in the drawings and described in detail below, with the understanding that the present disclosure provides many applicable inventive concepts that can be embodied in a wide variety of specific forms. The specific embodiments illustrated and discussed herein are merely illustrative of specific ways to make and use the invention, and do not delimit the scope of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Moreover, repeated reference numerals or designations may be used in various embodiments. These iterations are merely for simplicity and clarity of describing the present invention, and are not intended to represent any interrelationships between the different embodiments and/or structures discussed. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. The illustrations in this specification are in simplified form and are not drawn to precise scale. For clarity and ease of description, directional terms (e.g., top, bottom, up, down, and diagonal) are used with respect to the accompanying drawings. The following directional terms used in the following description should not be construed to limit the scope of the present invention unless they are explicitly used in the claims below.
Fig. 1 is a schematic diagram illustrating an exploded structure of a vibration motor 100 according to an embodiment of the present invention. According to an embodiment of the present invention, the vibration motor 100 is a flat type vibration motor. In fig. 1, the vibration motor 100 includes a fixing element 110, a rotating element 120 and a cover 130, wherein the rotating element 120 is rotatably mounted on the fixing element 110, and the cover 130 is fastened with the fixing element 110 and covers the rotating element 120 therein. The fixing assembly 110 includes a bracket 111, a first circuit board 112, a conductive member 113, a first rotating member 114, and a magnet 115.
Fig. 2 is an external view of the first circuit board 112 according to an embodiment of the invention. Referring to fig. 2, the bracket 111 is substantially a concave housing, and includes a first mounting groove 1111, a second mounting groove 1112 disposed on a bottom wall of the first mounting groove 1111, a protruding pillar 1113 disposed on the second mounting groove 1112, and a first mounting hole 1114 disposed on an end surface of the protruding pillar 1113, where the first mounting groove 1111 is circular, and the second mounting groove 1112 is substantially a long bar.
Returning to fig. 1, the magnet 115 has a disk shape provided with a first through hole 1151. The first circuit board 112 is in a long strip shape and is provided with a second through hole 1121, and the two conductive elements 113 are fixed on the upper surface of the first circuit board 112 at intervals and electrically connected to the circuits in the first circuit board 112. According to an embodiment of the present invention, the conductive element 113 may be a brush.
According to an embodiment of the invention, the first circuit board 112 may be a flexible circuit board, and the first rotating member 114 may be a rotating shaft. Referring to fig. 1 and fig. 2, when the fixing assembly 110 is assembled, glue is coated on the inner bottom wall of the second mounting groove 1112 or the lower surface of the first circuit board 112, the second through hole 1121 of the first circuit board 112 is sleeved on the protruding pillar 1113, the first circuit board 112 is adhered to the second mounting groove 1112, and the two conductive elements 113 are located at two sides of the protruding pillar 1113. Then, riveting one end of the first rotating member 114 in the first mounting hole 1114 of the convex pillar 1113; finally, the first through hole 1151 of the magnet 115 is inserted through the two conductive members 113 and mounted in the first mounting groove 1111, while the two conductive members 113 protrude from the first through hole 1151.
The rotating assembly 120 includes a second circuit board 121, a second rotating member 122, a weight 123, a coil 124 and a sleeve 125, and a glue 126 for solidifying the above components into a whole. The second circuit board 121 is an eccentric design, and has a first surface (bottom surface) facing the first circuit board 112 and a second surface (top surface) opposite to the first surface, and the first surface (bottom surface) has a rectifying circuit (not shown) electrically connected to the conductive element 113. The coil 124 is electrically connected to the rectifying circuit. The weight member 123 is disposed on a second surface (top surface) of the second circuit board 121. The sleeve 125 has a through hole for the first rotating member 114 to pass through and beyond the top and bottom surfaces of the sleeve 125. The second rotating member 122 is provided with a shaft hole 1221, the shaft hole 1221 is used for rotatably engaging with the first rotating member 114 of the fixed component 110, and the rotating component 120 is rotatably connected with the bracket 111 through the engagement of the second rotating member 122 and the first rotating member 144 so as to be rotatably mounted on the fixed component 110.
Fig. 3 is an external view of the second circuit board 121 according to an embodiment of the invention. Referring to fig. 3, the second circuit board 121 has a fixing hole 1211 and two hollow areas 1213, the fixing hole 1211 is located at an eccentric position of the second circuit board 121, and the two hollow areas 1213 are respectively used for placing the coil 124. The rectifying circuit is disposed on the lower surface of the second circuit board 121 and surrounds the fixing hole 1211.
Fig. 4 is an external view of the second circuit board 121 with the coil 124 and the weight 123 mounted thereon according to an embodiment of the invention. Referring to fig. 4, the two coils 124 are respectively disposed in the areas of the hollow areas 1213 shown in fig. 3, according to an embodiment of the present invention, the lower edges of the two coils 124 are flush with or exceed the first surface (bottom surface) of the second circuit board 121, the weight block 123 is disposed on the second circuit board 121 and located between the two coils 124, and the shape of the weight block 123 can match the space between the two coils 124 to achieve better sealing and fixing effects, as shown in fig. 4.
Referring back to fig. 1, when the rotating assembly 120 is assembled, the two coils 124 are first installed in the hollow area 1213 of the second circuit board 121 and are electrically connected to the rectifying circuit disposed on the lower surface of the second circuit board 121 through the second circuit board 121. Next, the weight 123 is installed between the two coils 124, at which time the weight 123 is confined between the two coils 124. According to an embodiment of the present invention, the adhesive 126 may be formed by injection molding to solidify the second circuit board 121, the weight 123 and the coil 124 into a whole. The cover 130 is a generally concave cylindrical housing, and a receiving space is formed therein for receiving the rotating assembly 120. The inner surface of the cover 130 is provided with a mounting hole for mounting the first rotating member 114.
Fig. 5 is a schematic cross-sectional view of the vibration motor 100 according to an embodiment of the invention, wherein the cross-sectional view passes through the axial center of the second rotating member 122. As shown in fig. 1 to 5, the second circuit board 121 is designed to be eccentric, and the power received by the first circuit board 112 is sequentially supplied to the coil 124 of the second circuit board 121 through the conductive element 113, the rectifying circuit at the bottom of the second circuit board 121, and the circuit of the second circuit board 121, so that the magnetic force generated by the coil 124 acts on the magnet 115 to drive the rotating element 120 to make a circular motion. During the rotation, since the second circuit board 121 of the rotating assembly 120 is eccentrically designed, the direction of the generated centripetal force is continuously changed along with the rotation of the second circuit board 121, thereby generating an effect of vibrating the vibration motor 100. It should be noted that, since the winding manner of the coil 124 of the vibration motor is a common technique used by those skilled in the art, the description is omitted herein for brevity, and those skilled in the art can design the winding manner of the coil 124 according to actual requirements.
The assembly and operation of the vibration motor 100 will be described with reference to fig. 1 to 5:
when assembling, the first rotating member 114 passes through the first through hole 1151 of the magnet 115, the sleeve 125 and the fixing hole 1211 of the second circuit board 121, and the shaft hole 1221 of the second rotating member 122 of the rotating member 120 is sleeved on the first rotating member 114, so that the rotating member 120 is rotatably mounted on the fixing member 110, at this time, the rectifying circuit of the second circuit board 121 contacts and is electrically connected with the two conductive members 113 on the first circuit board 112, and the first circuit board 112 is electrically connected to the coil 124 sequentially through the conductive members 113, the rectifying circuit and the second circuit board 121. Then, the cover 130 is fastened to the bracket 111, and the cover 130 is sleeved on the other end of the first rotating member 114 away from the bracket 111, so that the vibration motor 100 is mounted. It should be noted that, in the embodiment of the present invention, since the second circuit board 121 is designed to be hollow, so that the circuit board or other components are not separated between the coil 124 and the magnet 115, that is, the coil 124 directly faces the magnet 115, through this design, the thickness of the coil 124 can be increased, and the lower edge of the coil is flush with the bottom surface of the circuit board or slightly exceeds the bottom surface of the circuit board, so that the distance between the coil 124 and the magnet 115 can be reduced, the efficiency of the interaction between the coil 124 and the magnet 115 can be effectively improved, and the performance of the vibration motor 100 can be improved.
The present invention also provides an electronic device to which the vibration motor 100 is applied, and the electronic device may include a main board and the vibration motor 100, and the first circuit board 112 of the vibration motor 100 is electrically connected to the main board to receive power. According to an embodiment of the present invention, the electronic device may be a mobile phone, when the electronic device receives information or an incoming call, the main board provides power to the first circuit board 112, the first circuit board 112 supplies power to the coil 124 via the conductive element 113 and the rectifying circuit of the second circuit board 121 to generate a magnetic field, and the coil 124 and the magnet 115 interact with each other to rotate the rotating assembly 120 relative to the fixed assembly 110. Since the rotating assembly 120 is eccentrically rotated, the vibration motor 100 is vibrated to provide tactile stimulation to the user.
In summary, the vibration motor 100 and the electronic device using the vibration motor 100 according to the present invention mount the coil by using the circuit board with a hollow design, so that the distance between the coil and the magnet can be reduced, the interaction efficiency between the coil and the magnet can be effectively improved, and the size of the vibration motor can be further reduced.
It will be apparent to those skilled in the art that other corresponding changes and modifications can be made according to the actual needs created by the inventive arrangements and inventive concepts herein, and such changes and modifications are intended to fall within the scope of the appended claims.
Claims (10)
1. A vibration motor, comprising:
a bracket;
the first rotating piece is arranged on the bracket;
the first circuit board is arranged on the bracket and is provided with a conductive element;
the magnet is arranged on the first circuit board;
a rotating assembly, comprising:
the second circuit board is provided with a first hollow area, the second circuit board is provided with a first surface facing the first circuit board and a second surface opposite to the first surface, and the first surface is provided with a rectifying circuit electrically connected with the conductive element;
the second rotating piece is arranged on the second circuit board, and the rotating assembly is rotatably connected with the bracket through the matching of the second rotating piece and the first rotating piece;
the first coil is arranged in the first hollow area and is electrically connected with the rectifying circuit;
the balancing weight is arranged on the second surface; and
and the cover body covers the bracket and the rotating assembly.
2. The vibration motor of claim 1, further comprising a second coil electrically connected to the rectifying circuit, wherein the second circuit board further comprises a second hollow area, the second coil is disposed in the second hollow area, and the weight is disposed between the first coil and the second coil.
3. The vibration motor of claim 2, wherein said first coil and said second coil extend beyond said first surface.
4. The vibration motor of claim 2, wherein said second circuit board, said second rotating member, said weight member, and said first coil and said second coil are formed as a single body by injection molding.
5. The vibration motor of claim 1, wherein said first coil directly faces said magnet.
6. The vibration motor of claim 1, wherein the bracket includes a first mounting groove, a second mounting groove provided to a bottom wall of the first mounting groove, and a first mounting hole provided on the second mounting groove, the first circuit board is mounted to the second mounting groove, and the magnet covers the first circuit board and is mounted to the first mounting groove.
7. The vibration motor of claim 6, wherein the magnet is provided with a first through hole, one end of the first rotating member passes through the first through hole and is mounted to the first mounting hole, and the second rotating member passes through the first through hole and is rotatably mounted to the first rotating member.
8. The vibration motor of claim 7, further comprising a cover fastened to the bracket to form a receiving space with the bracket for receiving the rotating member, wherein the cover is provided with a second mounting hole, and the other end of the first rotating member away from the bracket is mounted in the second mounting hole.
9. The vibration motor of claim 6, wherein the second mounting groove is convexly provided with a convex column, the first mounting hole is arranged on the end surface of the convex column, the first circuit board is provided with a second through hole, and the second through hole is sleeved on the convex column; the first circuit board is a flexible circuit board.
10. An electronic device comprising the vibration motor according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811420524.0A CN111224528B (en) | 2018-11-26 | 2018-11-26 | Vibration motor and electronic equipment using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811420524.0A CN111224528B (en) | 2018-11-26 | 2018-11-26 | Vibration motor and electronic equipment using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111224528A CN111224528A (en) | 2020-06-02 |
| CN111224528B true CN111224528B (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811420524.0A Active CN111224528B (en) | 2018-11-26 | 2018-11-26 | Vibration motor and electronic equipment using same |
Country Status (1)
| Country | Link |
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| CN (1) | CN111224528B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204947867U (en) * | 2014-09-30 | 2016-01-06 | 日本电产精密株式会社 | Vibrating motor |
| CN206524744U (en) * | 2017-01-12 | 2017-09-26 | 瑞声科技(新加坡)有限公司 | Vibrating motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1992474B (en) * | 2005-12-26 | 2010-08-25 | 比亚迪股份有限公司 | Flat vibrating motor for increasing vibration |
-
2018
- 2018-11-26 CN CN201811420524.0A patent/CN111224528B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204947867U (en) * | 2014-09-30 | 2016-01-06 | 日本电产精密株式会社 | Vibrating motor |
| CN206524744U (en) * | 2017-01-12 | 2017-09-26 | 瑞声科技(新加坡)有限公司 | Vibrating motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111224528A (en) | 2020-06-02 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20200909 Address after: 528437 No. 9 Jianye East Road, Torch Development Zone, Guangdong, Zhongshan Applicant after: SHUNSIN TECHNOLOGY (ZHONG SHAN) Ltd. Address before: 528437 No. 9 Jianye East Road, Torch Development Zone, Guangdong, Zhongshan Applicant before: SHUNSIN TECHNOLOGY (ZHONG SHAN) Ltd. Applicant before: SHUNSIN TECHNOLOGY HOLDINGS Ltd. |
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