Linear motors and electronics

Abstract

The present application provides a linear motor and an electronic device, belonging to the field of motor technology, wherein the linear motor comprises: a shell; a flexible membrane, arranged in the shell; a first coil, arranged on the flexible membrane; a motor vibration assembly, arranged in the shell and located on one side of the flexible membrane, wherein the motor vibration assembly comprises a second coil; wherein, when the first coil and the second coil are energized and oppositely energized, the first coil drives the flexible membrane to protrude toward the second coil to inhale air into the interior of the shell; and when the first coil and the second coil are energized and oppositely energized, the first coil drives the flexible membrane to protrude away from the second coil to exhaust air to the outside of the shell.

Description

Technical Field

[0001] The present application belongs to the field of motor technology, and specifically relates to a linear motor and an electronic device. Background Art

[0002] In the related art, in order to improve the vibration effect of the electronic device, a linear motor is usually set inside the electronic device. In order to improve the heat dissipation effect of the electronic device, a fan is usually set inside the electronic device. However, the linear motor and the fan are both large in size, and both occupy a large space inside the electronic device. In addition, circuits need to be set up separately for the two, which affects the internal layout, weight and thickness of the electronic device. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a linear motor and an electronic device, which can effectively solve the technical problem that a linear motor and a fan need to be simultaneously arranged inside the electronic device, thereby affecting the internal layout of the electronic device.

[0004] In a first aspect, an embodiment of the present application provides a linear motor, comprising:

[0005] case;

[0006] a flexible membrane disposed within the housing;

[0007] A first coil is disposed on the flexible film;

[0008] A motor vibration assembly is disposed in the housing and located on one side of the flexible membrane, and the motor vibration assembly includes a second coil;

[0009] Among them, when the first coil and the second coil are energized and opposite to each other, the first coil drives the flexible membrane to protrude toward the second coil to inhale air into the interior of the shell; when the first coil and the second coil are energized and opposite to each other, the first coil drives the flexible membrane to protrude away from the second coil to exhaust air to the outside of the shell.

[0010] In a second aspect, an embodiment of the present application provides an electronic device, including:

[0011] The device body; and

[0012] A linear motor as provided in the first aspect embodiment.

[0013] In an embodiment of the present application, the linear motor includes a shell, a flexible membrane, a first coil and a motor vibration assembly. The flexible membrane, the first coil and the motor vibration assembly are all arranged in the shell. The motor vibration assembly realizes the vibration of the linear motor. The motor vibration assembly is located on one side of the flexible membrane.

[0014] The motor vibration assembly includes a second coil, which corresponds to the first coil. After the first coil and the second coil are energized and the magnetic poles generated by the first coil and the second coil are opposite to each other, an attraction force is generated between the second coil and the first coil, and the first coil approaches the second coil, thereby causing the flexible membrane to bulge toward the second coil, so that airflow can enter the interior of the shell; after the first coil and the second coil are energized and the magnetic poles generated by the first coil and the second coil are opposite to each other, a repulsive force is generated between the second coil and the first coil, and the first coil moves away from the second coil, thereby causing the flexible membrane to bulge away from the second coil, so that airflow can be discharged from the shell.

[0015] The motor vibration component can provide a vibration effect for the linear motor. By controlling the power-on state of the motor vibration component and the first coil, the vibration of the linear motor, the heat dissipation of the linear motor, or the vibration and heat dissipation of the linear motor can be achieved simultaneously.

[0016] As mentioned above, by cyclically controlling the circuit of the first coil and the second coil, the reciprocating vibration of the flexible membrane can be achieved, thereby realizing the flow of airflow, achieving the effect of thermal interaction, and playing the role of active heat dissipation. The linear motor provided in the present application has the ability of active heat dissipation, that is, the linear motor has multiple functions such as vibration and active heat dissipation. If the linear motor is arranged in an electronic device, there is no need to set up independent heat dissipation components such as fans, and only one set of circuits needs to be arranged, which reduces the occupation of the internal space of the electronic device, is conducive to the lightweight of the electronic device, and can improve the heat dissipation effect of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 An exploded view of a linear motor provided by one embodiment of the present application is shown;

[0019] Figure 2 A schematic diagram of a linear motor provided by an embodiment of the present application is shown;

[0020] Figure 3 It shows that Figure 2 A cross-sectional view of the linear motor taken along the AA direction shown;

[0021] Figure 4 A cross-sectional view of a linear motor provided by one embodiment of the present application is shown;

[0022] Figure 5 A cross-sectional view of a linear motor provided by one embodiment of the present application is shown;

[0023] Figure 6A schematic diagram of a linear motor provided by an embodiment of the present application is shown;

[0024] Figure 7 It shows that Figure 6 A cross-sectional view of the linear motor taken along the BB axis;

[0025] Figure 8 A cross-sectional view of a linear motor provided by one embodiment of the present application is shown;

[0026] Fig. 9 A cross-sectional view of a linear motor provided by one embodiment of the present application is shown;

[0027] Fig.10 A cross-sectional view of a linear motor provided by one embodiment of the present application is shown;

[0028] Fig.11 A schematic diagram of an electronic device provided by an embodiment of the present application is shown;

[0029] Fig.12 An exploded view of an electronic device provided by an embodiment of the present application is shown;

[0030] Fig.13 A schematic diagram of an electronic device provided by an embodiment of the present application is shown;

[0031] Fig.14 It shows that Fig.13 A cross-sectional view of a partial structure of the electronic device shown in the CC direction.

[0032] Figures 1 to 14 Reference numerals:

[0033] 100 linear motor, 110 shell, 112 first opening, 114 second opening, 116 main body, 118 limit part, 120 partition, 130 flexible membrane, 140 first coil, 150 motor vibration assembly, 152 second coil, 154 electromagnet, 156 vibrator, 158 first spring, 160 second spring, 170 first buffer, 180 second buffer, 190 third opening, 200 electronic device, 210 device main body, 212 fourth opening, 214 fifth opening, 216 screen assembly, 218 heat sink, 220 frame, 222 first circuit board, 224 second circuit board, 226 back cover assembly, 230 waterproof and breathable membrane. DETAILED DESCRIPTION

[0034] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0035] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0036] In the description of the present application, it should be understood that the terms "upper", "inner", etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] Combine the following Figures 1 to 14 A linear motor 100 and an electronic device 200 according to an embodiment of the present application are described.

[0039] First, as Figure 1As shown, an embodiment of the present application provides a linear motor 100, including: a shell 110; a flexible membrane 130, arranged in the shell 110; a first coil 140, arranged on the flexible membrane 130; a motor vibration component 150, arranged in the shell 110, located on one side of the flexible membrane 130, and the motor vibration component 150 includes a second coil 152; wherein, when the first coil 140 and the second coil 152 are energized and oppositely polarized, the first coil 140 drives the flexible membrane 130 to protrude toward the second coil 152 to inhale air into the interior of the shell 110; when the first coil 140 and the second coil 152 are energized and oppositely polarized, the first coil 140 drives the flexible membrane 130 to protrude away from the second coil 152 to exhaust air to the outside of the shell 110.

[0040] In the embodiment of the present application, the linear motor 100 includes a shell 110, a flexible membrane 130, a first coil 140 and a motor vibration assembly 150. The flexible membrane 130, the first coil 140 and the motor vibration assembly 150 are all arranged in the shell 110. The motor vibration assembly 150 realizes the vibration of the linear motor 100. The shell 110 has a first opening 112 and a second opening 114. The motor vibration assembly 150 is located on one side of the flexible membrane 130.

[0041] The motor vibration assembly 150 includes a second coil 152, which corresponds to the first coil 140. After the first coil 140 and the second coil 152 are energized, and the magnetic poles generated by the first coil 140 and the second coil 152 are opposite to each other, an attraction force is generated between the second coil 152 and the first coil 140, and the first coil 140 approaches the second coil 152, so that the flexible membrane 130 protrudes toward the second coil 152, so that the airflow can enter the interior of the shell 110; after the first coil 140 and the second coil 152 are energized, and the magnetic poles generated by the first coil 140 and the second coil 152 are opposite to each other, a repulsive force is generated between the second coil 152 and the first coil 140, and the first coil 140 moves away from the second coil 152, so that the flexible membrane 130 protrudes away from the second coil 152, so that the airflow can be discharged from the shell 110.

[0042] The motor vibration assembly 150 can provide a vibration effect for the linear motor 100. By controlling the power-on state of the motor vibration assembly 150 and the first coil 140, the vibration of the linear motor 100, the heat dissipation of the linear motor 100, or the vibration and heat dissipation of the linear motor 100 can be achieved simultaneously.

[0043] As mentioned above, by cyclically controlling the circuit of the first coil 140 and the second coil 152, the reciprocating vibration of the flexible membrane 130 can be achieved, thereby realizing the flow of airflow, achieving the effect of thermal interaction, and playing the role of active heat dissipation. The linear motor 100 provided in the present application has the ability of active heat dissipation, that is, the linear motor 100 has multiple functions such as vibration and active heat dissipation. If the linear motor 100 is arranged in the electronic device 200, there is no need to set up independent heat dissipation components such as fans, and only one set of circuits needs to be arranged, which reduces the occupation of the internal space of the electronic device 200, is conducive to the thinness of the electronic device 200, and can improve the heat dissipation effect of the electronic device 200.

[0044] The present application designs a highly efficient active heat dissipation mechanism that can be built into an electronic device 200, and the mechanism can be integrated into an existing device of the electronic device 200, that is, a linear motor 100. The improvement of the linear motor 100 is based on the Ampere loop law, using simple materials, components and circuit design, and then using the existing linear motor 100 and internal and external channels inside the electronic device 200 to achieve the heat dissipation function, the heat dissipation process has low noise, the heat dissipation mechanism has low cost and simple design.

[0045] As a possible implementation, the shell 110 has a first opening 112 and a second opening 114, the first opening 112 and the second opening 114 are located on the same side of the flexible membrane 130, and the motor vibration assembly 150 is located on the side of the flexible membrane 130 away from the first opening 112; wherein, when the first coil 140 and the second coil 152 are energized and oppositely polarized, the first coil 140 drives the flexible membrane 130 to protrude toward the second coil 152, so that the shell 110 inhales air through at least one of the first opening 112 and the second opening 114; when the first coil 140 and the second coil 152 are energized and oppositely polarized, the first coil 140 drives the flexible membrane 130 to protrude away from the second coil 152, so that the shell 110 exhausts air through at least one of the first opening 112 and the second opening 114.

[0046] Specifically, the housing 110 has a first opening 112 and a second opening 114 , the flexible membrane 130 is located on one side of the first opening 112 and the second opening 114 , and the motor vibration assembly 150 is located on a side of the flexible membrane 130 away from the first opening 112 and the second opening 114 .

[0047] The motor vibration assembly 150 includes a second coil 152, which corresponds to the first coil 140. After the first coil 140 and the second coil 152 are energized, and the magnetic poles generated by the first coil 140 and the second coil 152 are opposite to each other, an attraction force is generated between the second coil 152 and the first coil 140, and the first coil 140 approaches the second coil 152, so that the flexible membrane 130 protrudes toward the second coil 152, so that the airflow can be sucked into the shell 110 through at least one of the first opening 112 and the second opening 114; after the first coil 140 and the second coil 152 are energized, and the magnetic poles generated by the first coil 140 and the second coil 152 are opposite to each other, a repulsive force is generated between the second coil 152 and the first coil 140, and the first coil 140 moves away from the second coil 152, so that the flexible membrane 130 protrudes away from the second coil 152, so that the airflow can be discharged from the shell 110 through at least one of the first opening 112 and the second opening 114.

[0048] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, as a possible implementation, the first opening 112 is located at the end of the housing 110 , and the second opening 114 is located on the circumference of the housing 110 ; the size of the first opening 112 is larger than that of the second opening 114 .

[0049] Specifically, the first opening 112 is located at an end of the housing 110 , the second opening 114 is located at a peripheral side of the housing 110 , and a size of the first opening 112 is larger than a size of the second opening 114 .

[0050] After the first coil 140 and the second coil 152 are energized, and the magnetic polarities of the first coil 140 and the second coil 152 are opposite, an attraction is generated between the second coil 152 and the first coil 140, and the first coil 140 approaches the second coil 152, so that the flexible film 130 protrudes toward the second coil 152, so that the airflow can be sucked into the housing 110 through the first opening 112 and the second opening 114. In addition, since the size of the first opening 112 is large and the size of the second opening 114 is small, the air intake of the first opening 112 is slow, and the air intake of the second opening 114 is fast; After the coil 140 and the second coil 152 are energized, and the magnetic poles generated by the first coil 140 and the second coil 152 are opposite to each other with the same polarity, a repulsive force is generated between the second coil 152 and the first coil 140, and the first coil 140 moves away from the second coil 152, so that the flexible membrane 130 protrudes away from the second coil 152, so that the airflow can be discharged from the shell 110 through the first opening 112. Since the size of the first opening 112 is large and the size of the second opening 114 is small, therefore, when exhausting, the second opening 114 remains in the suction state under the action of the inertia of the airflow, and the airflow will be discharged through the first opening 112.

[0051] As described above, the effect of air being sucked in through the second opening 114 and exhausted through the first opening 112 is achieved, thereby improving the heat exchange effect of the linear motor 100 .

[0052] Among them, the first opening 112 can be set at the entire end of the shell 110, that is, one end of the shell 110 is designed to be open to form the first opening 112; the number of the second openings 114 is one, two or more, and the second openings 114 can be set on at least one side wall of the shell 110.

[0053] like Figure 1 As shown, as a possible implementation, the edge of the flexible film 130 is connected to the inner side of the housing 110 , and the first coil 140 is disposed in the middle of the flexible film 130 .

[0054] Specifically, the edge of the flexible membrane 130 is connected to the inner side of the housing 110 , and the first coil 140 is disposed in the middle of the flexible membrane 130 , thereby ensuring the deformation of the flexible membrane 130 , ensuring the flow rate of the airflow, and improving the heat exchange effect of the linear motor 100 .

[0055] Among them, a matching flexible membrane 130 is arranged according to the structure of the shell 110, for example: the interior can be roughly a rectangular parallelepiped, the flexible membrane 130 and the surrounding side of the shell 110 match, the flexible membrane 130 can be embedded in the shell 110, and the connection method between the flexible membrane 130 and the shell 110 can be injection molding or bonding, etc., or the flexible membrane 130 can be fixed on the shell 110 by other components.

[0056] like Figures 2 to 4 As shown, as a possible implementation, the motor vibration assembly 150 also includes: an electromagnet 154, located on the side of the second coil 152 away from the first coil 140, and the second coil 152 is fixed in the shell 110; a first spring 158, arranged in the shell 110, located at one end of the electromagnet 154; a second spring 160, arranged in the shell 110, located at the other end of the electromagnet 154.

[0057] Specifically, the motor vibration assembly 150 also includes an electromagnet 154, a first spring 158 and a second spring 160. The electromagnet 154, the first spring 158 and the second spring 160 are all arranged in the shell 110. The first spring 158 and the second spring 160 are respectively arranged at both ends of the electromagnet 154. The second coil 152 is fixed in the shell 110 and is located between the first coil 140 and the electromagnet 154. When the second coil 152 and the electromagnet 154 are energized, the electromagnet 154 can vibrate to achieve the vibration of the linear motor 100. When the second coil 152 and the first coil 140 are energized, the flexible membrane 130 can be deformed to achieve ventilation of the linear motor 100. When the first coil 140, the electromagnet 154 and the second coil 152 are all energized, the linear motor 100 can achieve both vibration and ventilation.

[0058] The first spring 158 may be a spring sheet or a coil spring, and the second spring 160 may be a spring sheet or a coil spring, etc.

[0059] like Figure 2 , Figure 3 and Figure 4 As shown, the arrangement direction of the first spring 158 and the second spring 160 is substantially perpendicular to the vibration direction of the flexible membrane 130 .

[0060] The first spring 158 and the second spring 160 provide a buffer for the X-direction or X+direction movement of the electromagnet 154 , thereby improving the smoothness of the reciprocating movement of the electromagnet 154 in the X-direction and the X+direction.

[0061] like Figures 2 to 4As shown, as a possible implementation, the shell 110 includes: a main body 116, an electromagnet 154 is arranged in the main body 116; a limiting portion 118 is arranged in the main body 116, and the limiting portion 118 is located between the electromagnet 154 and the second coil 152; wherein, when the second coil 152 and the electromagnet 154 are energized and oppositely charged, the electromagnet 154 moves toward one of the first spring 158 and the second spring 160 under the restriction of the main body 116 and the limiting portion 118; when the second coil 152 and the electromagnet 154 are energized and oppositely charged, the electromagnet 154 moves toward the other of the first spring 158 and the second spring 160 under the restriction of the main body 116 and the limiting portion 118.

[0062] Specifically, the housing 110 includes a main body 116 and a limiting portion 118 . The electromagnet 154 is disposed in the main body 116 . The limiting portion 118 is disposed in the main body 116 , and the limiting portion 118 is located between the electromagnet 154 and the second coil 152 .

[0063] When the second coil 152 and the electromagnet 154 are energized and oppositely charged, the electromagnet 154 is restricted by the main body 116 and the limit portion 118 and cannot move away from the second coil 152, and can only move toward one of the first spring 158 and the second spring 160. Thereafter, when they are oppositely charged, the electromagnet 154 is restricted by the main body 116 and the limit portion 118 and can only move toward the other of the first spring 158 and the second spring 160. Then, through the push of the first spring 158 and the second spring 160 and the switching of the magnetism of at least one of the second coil 152 and the electromagnet 154, the vibration effect of the linear motor 100 can be ensured.

[0064] Furthermore, during the vibration of the electromagnet 154, if the first coil 140 is also energized and the current of the first coil 140 is controlled according to the magnetic pole generated by the second coil 152, the linear motor 100 can provide vibration while achieving heat dissipation. If during the vibration of the electromagnet 154, if the first coil 140 is not energized, the linear motor 100 can only provide vibration.

[0065] The side wall of the main body 116 and the limiting portion 118 form a channel, the electromagnet 154 is disposed in the channel, and the first spring 158 and the second spring 160 are located at two ends of the channel.

[0066] like Figures 2 to 4 As shown, as a possible implementation, the housing 110 further includes: a partition 120 disposed in the main body 116 and located between the limiting portion 118 and the flexible membrane 130 , and the second coil 152 is fixed on a side of the partition 120 away from the flexible membrane 130 .

[0067] Specifically, the shell 110 also includes a partition 120 arranged in the main body 116, and the partition 120 is located between the limit portion 118 and the flexible membrane 130. The second coil 152 is fixed on the side of the partition 120 away from the flexible membrane 130, so that the second coil 152 is fixed between the electromagnet 154 and the first coil 140, ensuring the stability of the second coil 152. In addition, the second coil 152 is located on the side of the partition 120 away from the flexible membrane 130, reducing the possibility of contact between the second coil 152 and the first coil 140, thereby improving the safety of the linear motor 100.

[0068] Among them, the linear motor 100 includes a shell 110, which serves as a supporting device for other components, and plays the role of supporting components such as the electromagnet 154, the first spring 158, the second spring 160, the second coil 152, and the flexible membrane 130. At the same time, there is a second opening 114 on the side wall for sucking in air, and the end of the shell 110 is opened to form a first opening 112 for exhausting air.

[0069] The second coil 152 is firmly mounted on the copper housing 110 by dispensing glue or welding, and current is passed inside to generate an induced electric field, thereby generating an electromagnetic effect with the electromagnet 154 to generate a force in the X-direction or X+ direction on the electromagnet 154 .

[0070] The flexible membrane 130 has good flexibility and can fluctuate and swing to a certain extent through elastic deformation, sucking air from the outside through the second opening 114 and exhausting the air from the first opening 112 .

[0071] The first coil 140 is firmly mounted on the flexible film 130 by dispensing or welding, and current is passed inside to generate an induced electric field, thereby attracting or repelling the second coil 152 on the shell 110, thereby driving the flexible film 130 to vibrate, achieving an inciting effect.

[0072] The surface of the electromagnet 154 is wound with a third coil. When current is passed through the third coil, a force perpendicular to the X-direction, the X+ direction, or the X-direction and the X+ direction is generated. When no current is passed through the third coil, there is no magnetic effect. When power is passed through, the magnetic field can generate a force with the second coil 152 and move along the X-direction or the X+ direction. The third coil can be wound on the vibrator 156 in any direction as long as the second coil 152 and the third coil can be repelled or attracted to each other.

[0073] like Figure 3 As shown, when the current value of the first coil 140 and the second coil 152 is 0, the flexible film 130 maintains the initial state and does not deform.

[0074] like Figure 4As shown, when the first coil 140 and the second coil 152 are supplied with currents in the same direction, according to Ampere's law, the first coil 140 and the second coil 152 generate magnetic fields in the same direction, so that the S pole of the first coil 140 is downward and the N pole of the second coil 152 is upward, or the N pole of the first coil 140 is downward and the S pole of the second coil 152 is upward. The flexible film 130 is deformed downward due to the attraction between the first coil 140 and the second coil 152, and air flows into the second opening 114 at a high speed, and air flows into the first opening 112 at a slow speed, so that a large amount of air flows into the housing 110.

[0075] like Figure 5 As shown, when the first coil 140 and the second coil 152 are supplied with currents in opposite directions, according to Ampere's circuit law, the first coil 140 and the second coil 152 generate magnetic fields in opposite directions, so that the S-phase of the first coil 140 faces downward and the S-phase of the second coil 152 faces upward, or the N-phase of the first coil 140 faces downward and the N-phase of the second coil 152 faces upward. The flexible membrane 130 is deformed upward due to the repulsion between the first coil 140 and the second coil 152, and the second opening 114 still maintains the state of air intake due to inertia, while the direction of the first opening 112 compresses the space in the housing 110 due to the upward deformation of the flexible membrane 130, so that the high-temperature air in the housing 110 is quickly discharged.

[0076] like Figures 7 to 9 As shown, as a possible implementation, the motor vibration assembly 150 also includes: a vibrator 156, located on the side of the second coil 152 away from the first coil 140, and the second coil 152 is arranged on the vibrator 156; a first spring 158, arranged in the shell 110, located at one end of the vibrator 156; a second spring 160, arranged in the shell 110, located at the other end of the vibrator 156.

[0077] Specifically, the motor vibration assembly 150 also includes a vibrator 156, a first spring 158 and a second spring 160. The vibrator 156, the first spring 158 and the second spring 160 are all arranged in the shell 110. The first spring 158 and the second spring 160 are respectively arranged at both ends of the vibrator 156. The second coil 152 is fixed on the vibrator 156. When the second coil 152 and the first coil 140 are energized, the electromagnet 154 can vibrate to realize the vibration of the linear motor 100, and at the same time, the flexible membrane 130 can be deformed to realize the ventilation of the linear motor 100. The above structure reduces the components of the linear motor 100 and helps to reduce the thickness of the linear motor 100.

[0078] The vibrator 156 provides vibration for the linear motor 100 while achieving heat dissipation.

[0079] like Figures 7 to 9As shown, as a possible implementation, the housing 110 includes: a main body 116, a vibrator 156 is arranged in the main body 116; a limiting portion 118 is arranged in the main body 116, and the limiting portion 118 is located between the vibrator 156 and the flexible membrane 130; wherein, when the first coil 140 and the second coil 152 are energized and are opposite to each other with the same polarity, the vibrator 156 moves toward one of the first spring 158 and the second spring 160 under the restriction of the main body 116 and the limiting portion 118; when the first coil 140 and the second coil 152 are energized and are opposite to each other with opposite polarity, the vibrator 156 moves toward the other of the first spring 158 and the second spring 160 under the restriction of the main body 116 and the limiting portion 118.

[0080] Specifically, the housing 110 includes a main body 116 and a limiting portion 118 . The vibrator 156 is disposed in the main body 116 . The limiting portion 118 is disposed in the main body 116 , and the limiting portion 118 is located between the vibrator 156 and the flexible membrane 130 .

[0081] When the first coil 140 and the second coil 152 are energized and are opposite to each other with the same polarity, the vibrator 156 is restricted by the main body 116 and the limit portion 118 and cannot move away from the first coil 140, and can only move toward one of the first spring 158 and the second spring 160. Thereafter, when they are opposite to each other with opposite polarity, the vibrator 156 is restricted by the main body 116 and the limit portion 118 and can only move toward the other of the first spring 158 and the second spring 160. Then, through the push of the first spring 158 and the second spring 160, and the switching of the magnetism of at least one of the second coil 152 and the vibrator 156, the vibration effect of the linear motor 100 and the ventilation effect of the linear motor 100 can be ensured.

[0082] The second coil 152 can be wound around the vibrator 156 in any direction as long as the second coil 152 and the first coil 140 can be repelled or attracted to each other.

[0083] As the demand for electronic devices 200 to be thin and light becomes higher and higher, in order to save thickness space to a greater extent, the present application integrates the second coil 152 into the vibrator 156, that is, the coil that drives the movement of the vibrator 156 is the first coil 140 on the flexible film 130, thereby realizing the integration of the motor and the fan to a greater extent, thereby saving thickness space to the greatest extent.

[0084] like Figure 7 As shown, when the current value of the first coil 140 and the second coil 152 is 0, the flexible film 130 maintains the initial state and does not deform.

[0085] like Figure 8As shown, when the first coil 140 and the second coil 152 are supplied with currents in the same direction, according to Ampere's law, the first coil 140 and the second coil 152 generate magnetic fields in the same direction, so that the S pole of the first coil 140 is downward and the N pole of the second coil 152 is upward, or the N pole of the first coil 140 is downward and the S pole of the second coil 152 is upward. The flexible film 130 is deformed downward due to the attraction between the first coil 140 and the second coil 152, and air flows into the second opening 114 at a high speed, and air flows into the first opening 112 at a slow speed, so that a large amount of air flows into the housing 110.

[0086] like Fig. 9 As shown, when the first coil 140 and the second coil 152 are supplied with currents in opposite directions, according to Ampere's circuit law, the first coil 140 and the second coil 152 generate magnetic fields in opposite directions, so that the S-phase of the first coil 140 faces downward and the S-phase of the second coil 152 faces upward, or the N-phase of the first coil 140 faces downward and the N-phase of the second coil 152 faces upward. The flexible membrane 130 is deformed upward due to the repulsion between the first coil 140 and the second coil 152, and the second opening 114 still maintains the state of air intake due to inertia, while the direction of the first opening 112 compresses the space in the housing 110 due to the upward deformation of the flexible membrane 130, so that the high-temperature air in the housing 110 is quickly discharged.

[0087] The second coil 152 and the vibrator 156 are integrated together to improve the integration of the linear motor 100 and reduce the thickness of the linear motor 100, thereby saving device space, reducing costs and achieving active heat dissipation.

[0088] like Figure 1 As shown, as a possible implementation, it also includes: a first buffer member 170 located on one side of the shell 110; a second buffer member 180 located on the other side of the shell 110; wherein the first buffer member 170 and the second buffer member 180 are distributed along the deformation direction of the flexible membrane 130.

[0089] Specifically, the linear motor 100 also includes a first buffer 170 and a second buffer 180, which are respectively located at two ends of the shell 110, and the first buffer 170 and the second buffer 180 are distributed along the deformation direction of the flexible membrane 130. Therefore, when the flexible membrane 130 vibrates, the first buffer 170 and the second buffer 180 can absorb the vibration and reduce the influence of the vibration of the flexible membrane 130 on the electronic device 200.

[0090] The first buffer 170 is disposed between the device body 210 and the housing 110 of the electronic device 200, and has a certain amount of compression so that the motor does not vibrate in a corresponding direction, such as a direction perpendicular to the X-direction or the X+ direction.

[0091] The second buffer 180 is disposed between the device body 210 and the housing 110 of the electronic device 200, and has a certain amount of compression so that the motor does not vibrate in a corresponding direction, such as a direction perpendicular to the X-direction or the X+ direction.

[0092] Furthermore, the first buffer member 170 and the second buffer member 180 play a dustproof and waterproof role to a certain extent.

[0093] The first buffer component 170 may be made of foam, rubber or plastic, etc.; the second buffer component 180 may be made of foam, rubber or plastic, etc.

[0094] like Fig.10 As shown, as a possible implementation, at least one of the housing 110 and the flexible membrane 130 has a third opening 190 , and the third opening 190 is used to balance the pressure difference on both sides of the flexible membrane 130 .

[0095] Specifically, at least one of the shell 110 and the flexible membrane 130 has a third opening 190, and the third opening 190 is used to balance the pressure difference on both sides of the flexible membrane 130. After the first coil 140 and the second coil 152 are energized, and when the magnetic polarity anisotropy generated by the first coil 140 and the second coil 152 is relative, an attraction is generated between the second coil 152 and the first coil 140, and the first coil 140 approaches the second coil 152, so that the flexible membrane 130 bulges toward the second coil 152, so that airflow can enter the shell 110, and in this process, the third opening 190 can exhaust air to the outside of the shell 110, reducing the air between the side of the flexible membrane 130 facing the motor vibration component 150 and the shell 110, so as to avoid the flexible membrane 130 facing the side of the motor vibration component 150. The pressure between the side and the shell 110 is too large, which affects the bending amplitude of the flexible membrane 130; after the first coil 140 and the second coil 152 are energized, and the magnetic poles generated by the first coil 140 and the second coil 152 are opposite to each other, a repulsive force is generated between the second coil 152 and the first coil 140, and the first coil 140 moves away from the second coil 152, so that the flexible membrane 130 bulges away from the second coil 152, so that the airflow can be discharged from the shell 110, and, in this process, the third opening 190 can suck air into the shell 110, increase the air between the side of the flexible membrane 130 facing the motor vibration component 150 and the shell 110, so as to avoid that the pressure between the side of the flexible membrane 130 facing the motor vibration component 150 and the shell 110 is too small, which affects the bending amplitude of the flexible membrane 130.

[0096] Among them, a third opening 190 can be set on the flexible membrane 130, and the third opening 190 can be located in the middle position of the flexible membrane 130, or at the edge of the flexible membrane 130. After the flexible membrane 130 is installed on the shell 110, the third opening 190 is formed between a partial edge of the flexible membrane 130 and the shell 110.

[0097] The shell 110 may have a third opening 190, and the third opening 190 may be located on the side of the flexible membrane 130 facing the motor vibration assembly 150. When the shell 110 includes a partition 120, the third opening 190 is located between the flexible membrane 130 and the partition 120. The third opening 190 may be provided on both the flexible membrane 130 and the shell 110. Since the airflow that needs to be discharged or inhaled between the side of the flexible membrane 130 facing the motor vibration assembly 150 and the shell 110 is small, it does not affect the effect of the flexible membrane 130 sucking and exhausting air into the shell 110, that is, it can ensure that the flexible membrane 130 sucks air through the first opening 112 and the second opening 114, and exhausts air through the first opening 112.

[0098] Of course, in other embodiments of the present application, if the bending amplitude of the flexible membrane 130 is small, the change in air pressure between the side of the flexible membrane 130 facing the motor vibration assembly 150 and the shell 110 has little effect on the bending deformation of the flexible membrane 130, and the third opening 190 may not be provided.

[0099] Second, as Fig.11 , Fig.12 and Fig.13 As shown, an embodiment of the present application provides an electronic device 200, including: a device body 210; and a linear motor 100 provided in the embodiment of the first aspect.

[0100] In the embodiment of the present application, the electronic device 200 includes the linear motor 100 provided in the embodiment of the first aspect, and therefore has all the beneficial effects of the linear motor 100 provided in the embodiment of the first aspect, which are not listed one by one here.

[0101] like Fig.11 , Fig.12 , Fig.13 and Fig.14 As shown, as a possible implementation, the device body 210 includes a fourth opening 212 and a fifth opening 214, the first opening 112 of the linear motor 100 is connected to the fourth opening 212, and the second opening 114 of the linear motor 100 is connected to the fifth opening 214; the electronic device also includes: a waterproof and breathable membrane 230, which is arranged on the device body 210, and is used to block the fourth opening 212 and the fifth opening 214.

[0102] Specifically, Fig.11 , Fig.12 and Fig.13 As shown, the electronic device 200 includes a device body 210 and a linear motor 100 as provided in the first aspect embodiment, the device body 210 includes a fourth opening 212 and a fifth opening 214, the first opening 112 and the fourth opening 212 of the linear motor 100 are connected, and the second opening 114 and the fifth opening 214 of the linear motor 100 are connected, and then when the linear motor 100 inhales air through the second opening 114, the gas outside the electronic device 200 can be inhaled into the electronic device 200 through the fifth opening 214, and when exhausting, the airflow can be discharged from the electronic device 200 through the first opening 112 and the fourth opening 212, thereby realizing ventilation of the electronic device 200 and improving the heat exchange effect of the electronic device 200.

[0103] Optionally, in order to reduce energy consumption, a temperature sensor may be provided on the device body 210. When the temperature of the electronic device 200 reaches a certain threshold value, such as 39°C, 40°C, 41°C or 42°C, the first coil 140 and the second coil 152 are energized. When the temperature is lower than the threshold value, the circuits of the first coil 140 and the second coil 152 are disconnected. The current may be adjusted according to actual conditions, thereby adjusting the magnetic field, and then adjusting the amplitude of the flexible film 130, which may achieve more accurate heat dissipation and minimize energy consumption while ensuring user experience.

[0104] like Fig.11 and Fig.13 As shown, the electronic device 200 further includes a waterproof breathable membrane 230 , which is disposed on the device body 210 and blocks the fourth opening 212 and the fifth opening 214 , thereby improving the waterproof performance of the electronic device 200 and ensuring the heat dissipation effect of the electronic device 200 .

[0105] like Fig.14As shown, when a current with a rapid change of direction is passed through the second coil 152, a stable current in the same direction is passed through the electromagnet 154, and no current is passed through the first coil 140, the electromagnet 154 will exert force on the second coil 152, and continuously reciprocate between the X+ direction and the X- direction under the drive of the first spring 158 and the second spring 160 in the linear motor 100. When the electromagnet 154 is not energized, and the second coil 152 and the first coil 140 are passed through the same direction current, the electromagnet 154 will not vibrate, but the flexible membrane 130 will move downward, so that the second opening 114 inhales a large amount of gas, and then the device body 210 inhales a large amount of gas through the fifth opening 214, and the current of the first coil 140 changes direction rapidly, and the flexible membrane 130 will move upward, and the gas in the housing 110 will be discharged from the electronic device 200 through the first opening 112 and the fourth opening 212 on the device body 210. Through the reciprocating cycle of the above process, continuous heat dissipation inside the electronic device 200 is achieved.

[0106] In addition to independently realizing the functions of heat dissipation and vibration, the present application can also realize the simultaneous vibration of the motor and the flexible membrane 130 at the same frequency by controlling the direction and magnitude of the current of the electromagnet 154, the first coil 140 and the second coil 152.

[0107] The present application utilizes the existing motor integrated active heat dissipation function in the electronic device 200 to achieve higher integration, thereby saving device space, reducing costs and achieving active heat dissipation. Since an independent first coil 140 is provided, active heat dissipation can be performed when the vibration function is not working, that is, when the electromagnet 154 is not powered.

[0108] like Fig.11 and Fig.13 As shown, as a possible implementation, the device body 210 includes: a frame 220, a fifth opening 214 is arranged on the frame 220; a screen assembly 216 is arranged on the frame 220; a heat spreader 218 is arranged between the screen assembly 216 and the frame 220; a first circuit board 222 and a second circuit board 224 are arranged on the frame 220; a back cover assembly 226 is arranged on the frame 220, located on the side of the frame 220 away from the screen assembly 216, and the fourth opening 212 is arranged on the back cover assembly 226.

[0109] The electronic device 200 may be a terminal, or may be other devices except the electronic device 200. For example, the electronic device may be a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, a music player, a private network communication terminal device (such as a walkie-talkie), a mobile Internet device (Mobile Internet Device, MID), an augmented reality / virtual reality / mixed reality device, a robot, a wearable device, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a netbook or a personal digital assistant (personal digital assistant, PDA), etc., and may also be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a television (television, TV), a teller machine or a self-service machine, etc., which is not specifically limited in the embodiments of the present application.

[0110] In the description of this specification, the description with reference to the terms "one embodiment" or "specific embodiment" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0111] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A linear motor, characterized in that: include: case; a flexible membrane disposed within the housing; A first coil is disposed on the flexible film; a motor vibration assembly, disposed in the housing and located on one side of the flexible membrane, the motor vibration assembly comprising a second coil; When the first coil and the second coil are energized and oppositely charged, the first coil drives the flexible film to protrude toward the second coil to inhale air into the interior of the shell; when the first coil and the second coil are energized and oppositely charged, the first coil drives the flexible film to protrude away from the second coil to exhaust air to the outside of the shell.

2. The linear motor according to claim 1, characterized in that: The housing has a first opening and a second opening, the first opening and the second opening are located on the same side of the flexible membrane, and the motor vibration assembly is located on a side of the flexible membrane away from the first opening; When the first coil and the second coil are energized and opposite to each other, the first coil drives the flexible membrane to protrude toward the second coil, so that the shell inhales air through at least one of the first opening and the second opening; when the first coil and the second coil are energized and opposite to each other, the first coil drives the flexible membrane to protrude away from the second coil, so that the shell exhausts air through at least one of the first opening and the second opening.

3. The linear motor according to claim 2, characterized in that: The first opening is located at an end of the shell, and the second opening is located at a peripheral side of the shell; The size of the first opening is greater than the size of the second opening.

4. The linear motor according to claim 1, characterized in that: The edge of the flexible film is connected to the inner side of the shell, and the first coil is arranged in the middle position of the flexible film.

5. The linear motor according to any one of claims 1 to 4, characterized in that: The motor vibration assembly also includes: an electromagnet, located at a side of the second coil away from the first coil, and the second coil is fixed in the housing; A first spring, disposed in the housing and located at one end of the electromagnet; The second spring is arranged in the housing and located at the other end of the electromagnet.

6. The linear motor according to claim 5, characterized in that: The housing comprises: a main body, wherein the electromagnet is disposed in the main body; A limiting portion, disposed in the main body, wherein the limiting portion is located between the electromagnet and the second coil; Among them, when the second coil and the electromagnet are energized and are opposite to each other with the same polarity, the electromagnet moves toward one of the first spring and the second spring under the restriction of the main body and the limiting part; when the second coil and the electromagnet are energized and are opposite to each other with the same polarity, the electromagnet moves toward the other of the first spring and the second spring under the restriction of the main body and the limiting part.

7. The linear motor according to claim 6, characterized in that: The housing further comprises: The partition is arranged in the main body and is located between the limiting portion and the flexible film. The second coil is fixed on a side of the partition away from the flexible film.

8. The linear motor according to any one of claims 1 to 4, characterized in that: The motor vibration assembly also includes: a vibrator, located at a side of the second coil away from the first coil, the second coil being arranged on the vibrator; A first spring, disposed in the housing and located at one end of the vibrator; The second spring is arranged in the housing and located at the other end of the vibrator.

9. The linear motor according to claim 8, characterized in that: The housing comprises: a main body, wherein the vibrator is arranged in the main body; A limiting portion, disposed in the main body, the limiting portion being located between the vibrator and the flexible membrane; Among them, when the first coil and the second coil are energized and opposite to each other with the same pole, the vibrator moves toward one of the first spring and the second spring under the restriction of the main body and the limiting part; when the first coil and the second coil are energized and opposite to each other with the same pole, the vibrator moves toward the other of the first spring and the second spring under the restriction of the main body and the limiting part.

10. The linear motor according to any one of claims 1 to 4, characterized in that: Also includes: A first buffer member, located at one side of the housing; A second buffer member, located at the other side of the housing; Wherein, the first buffer component and the second buffer component are distributed along the deformation direction of the flexible film.

11. The linear motor according to any one of claims 1 to 4, characterized in that: At least one of the housing and the flexible membrane has a third opening, and the third opening is used to balance the pressure difference on both sides of the flexible membrane.

12. An electronic device, characterized in that: include: Equipment body; as well as A linear motor as claimed in any one of claims 1 to 11.

13. The electronic device according to claim 12, characterized in that: The device body has a fourth opening and a fifth opening, the first opening of the linear motor is connected to the fourth opening, and the second opening of the linear motor is connected to the fifth opening; the electronic device further includes: A waterproof and breathable membrane is provided on the device body and is used for sealing the fourth opening and the fifth opening.

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