CN111692156A

CN111692156A - Linear motor device and terminal device

Info

Publication number: CN111692156A
Application number: CN202010414323.0A
Authority: CN
Inventors: 郭华林; 姚雨良; 任延明; 郭智
Original assignee: Huawei Device Co Ltd
Current assignee: Huawei Device Co Ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2020-09-22
Anticipated expiration: 2040-05-15
Also published as: WO2021227678A1; CN111692156B

Abstract

The application provides a linear motor device, through setting up the cylinder that has one-way bleeder vent, the quality piece that has L type extension, trachea and electro-magnet isotructure, can realize linear motor device's automatic charging, inhale and the function of vibrations. The air tube is matched and connected with the air bag, so that the automatic inflation and air suction processes can be converted into unidirectional movement of the air bag, and the air bag can be used as a power source of the movable part to provide power for the movable part. Through improving linear motor's structure for linear motor not only has the function that provides the sensation of vibration, can also regard as the power supply of movable part, thereby can save terminal equipment's space, helps promoting terminal equipment and realizes miniaturization and lightweight.

Description

Linear motor device and terminal device

Technical Field

The present application relates to the field of linear motors, and more particularly, to a linear motor apparatus.

Background

With the rapid improvement of the informatization level and the requirements of people on miniaturization, light weight, portability and intellectualization of intelligent terminal equipment, high screen occupation ratio and high interactivity become the development direction of future terminal equipment. For example, a telescopic camera solution under high screen duty requirements, an application of a linear motor under high interactivity requirements, etc.

The linear motor is more and more widely applied to terminal equipment such as mobile phones and wearable equipment by virtue of the characteristics of high reaction speed, low power consumption, easiness in adjustment and control, easiness in customization and the like. In the existing terminal equipment, the linear motor is only used for providing a vibration sense, and the extension and retraction of other movable parts are realized by adding a stepping motor or other complicated mechanisms.

It can be seen that, in the existing terminal device, the linear motor and the stepping motor have a single function, wherein the linear motor only provides a feeling of vibration, and the stepping motor only serves as a power source of the component. This leads to an increase in the cost of the terminal device and an inability to minimize the size, which is contrary to the development direction of the smart terminal device, such as miniaturization and weight reduction.

Disclosure of Invention

The application provides a linear motor device has the function of providing the sense of vibration and providing power for other movable parts concurrently, can save intelligent terminal's space, helps promoting terminal equipment and realizes miniaturization and lightweight.

In a first aspect, there is provided a linear motor apparatus comprising:

a linear motor body having a hollow structure;

the air cylinder comprises a cylinder barrel, an end cover and a piston, wherein two one-way air holes are formed in the end cover, the piston is arranged inside the cylinder barrel, and the piston can linearly reciprocate inside the cylinder barrel;

the mass block comprises a base part and an L-shaped extension part, the base part is arranged in the hollow structure of the linear motor body, is connected with the linear motor body in a sliding mode and can reciprocate linearly in the hollow structure, and the L-shaped extension part extends out of the hollow structure and is connected with the piston inside the cylinder;

the air pipe is provided with a hollow structure, is arranged adjacent to the air cylinder, and is sleeved with a permanent magnet and an elastic component, the permanent magnet is sleeved on one side, close to the air cylinder, of the air pipe, the elastic component is sleeved on one side, far away from the air cylinder, of the air pipe, and the elastic component is compressed when being subjected to pressure along the axial direction of the air pipe;

two sets of electro-magnets center on tracheal circumferential direction sets up relatively, wherein, around there being the coil on every electro-magnet, the coil is circular telegram the back, the magnetic force that two sets of electro-magnets produced with permanent magnet's magnetic force interact makes on the trachea the cover be equipped with permanent magnet's one end is in unsettled position, perhaps connects the cylinder on one of them in two one-way bleeder vents.

The application provides a linear motor device is provided with the cylinder of one-way bleeder vent, including the quality piece, trachea and the electro-magnet isotructure of L type extension, can realize linear motor device's automatic charging, inhale and the function of vibrations. The linear motor device has multiple functions, can save the space of the terminal equipment, saves the manufacturing cost of the terminal equipment, and contributes to the light weight and the miniaturization of the terminal equipment.

With reference to the first aspect, in certain implementations of the first aspect, the two one-way vents include an air inlet and an air exhaust, wherein,

when the piston in the cylinder makes linear reciprocating motion and one end of the air pipe, which is sleeved with the permanent magnet, is connected with the air inlet hole, the cylinder is in an air suction state;

when the piston in the cylinder makes linear reciprocating motion and one end of the air pipe, which is sleeved with the permanent magnet, is connected to the exhaust hole, the cylinder is in an exhaust state;

when the piston in the cylinder makes a linear reciprocating motion and one end of the air pipe, which is sleeved with the permanent magnet, is in a suspension position, the linear motor device is in a vibration state.

With reference to the first aspect, in certain implementations of the first aspect, an air bag is disposed at one end of the air tube, which is away from the air cylinder, and when one end of the air tube, on which the permanent magnet is sleeved, is connected to the air inlet hole in a matching manner, air in the air bag is sucked into the air cylinder through the air tube, and the air bag is in a suction state and moves in a single direction;

when one end of the air pipe, which is sleeved with the permanent magnet, is connected to the exhaust hole in a matching manner, air in the air cylinder is filled into the air bag through the air pipe, and the air bag is in an inflation state and does unidirectional motion.

It will be appreciated that the direction of movement of the air-bag in the one-way movement when in the air-breathing condition is opposite to the direction of movement of the air-bag in the one-way movement when in the inflated condition.

Further, the air bag is arranged on the air pipe of the linear motor device in a matched mode, the automatic inflation and air suction processes can be converted into one-way movement of the air bag, and therefore the air bag can serve as a power source of the movable part and provide power for the movable part. By improving the structure of the linear motor, the linear motor not only has the function of providing the vibration sense, but also can be used as a power source of a movable part.

Therefore, a stepping motor or other complex structures for providing power for the movable part in the existing terminal equipment can be omitted, the internal structure of the terminal equipment can be simplified under the condition that the functions of the terminal equipment are not reduced, the space of the terminal equipment is saved, and the manufacturing complexity is reduced.

With reference to the first aspect, in certain implementations of the first aspect, the linear motor apparatus further includes:

the controller is used for controlling the magnitude and the magnetic poles of the magnetic force generated by the two groups of electromagnets, wherein the magnetic poles of the permanent magnets are the same as the magnetic poles of the two groups of electromagnets,

when the controller controls the magnetic poles generated by the two groups of electromagnets to be the same and the magnetic force is the same, one end of the air pipe, which is sleeved with the permanent magnet, is in a suspended position, and the linear motor device is in a vibration state;

when the controller controls the magnetic poles generated by the two groups of electromagnets to be the same and the magnetic force of one group of electromagnets close to the air inlet hole is larger than that of one group of electromagnets close to the air outlet hole, one end of the air pipe, which is sleeved with the permanent magnet, is connected to the air outlet hole, and the air bag is in the inflated state;

when the controller controls the magnetic poles generated by the two groups of electromagnets to be the same and the magnetic force of one group of electromagnets close to the air inlet hole is smaller than that of one group of electromagnets close to the air outlet hole, one end of the air pipe, which is sleeved with the permanent magnet, is connected to the air inlet hole, and the air bag is in an air suction state.

With reference to the first aspect, in certain implementations of the first aspect, the balloon is adjustable in size and volume.

With reference to the first aspect, in certain implementations of the first aspect, a movable part is connected to the other end of the airbag opposite to the end connected to the cylinder, and when the airbag is in the air suction state or the inflation state, the movable part is powered by power generated by unidirectional movement of the airbag due to air suction or inflation.

With reference to the first aspect, in certain implementations of the first aspect, the elastic member is a return spring.

With reference to the first aspect, in certain implementations of the first aspect, each of the two sets of electromagnets includes one electromagnet.

In a second aspect, there is provided a terminal device comprising a linear motor apparatus as described in the first aspect or any aspect thereof.

Drawings

Fig. 1 is a schematic structural view of a linear motor apparatus provided in the present application.

Fig. 2 is another angular view of the linear motor body, cylinder and mass.

Fig. 3 is a sectional view showing a positional relationship of the mass and the linear motor body.

Fig. 4 is a schematic view of the structure of the air tube of the linear motor device.

Fig. 5 is a schematic structural view of a cylinder of the linear motor apparatus.

Fig. 6 is a cross-sectional view of a vent structure according to an embodiment of the present application.

FIG. 7 is a cross-sectional view of an air intake hole structure according to an embodiment of the present application.

Fig. 8 is a cross-sectional view of a suspended position trench structure according to an embodiment of the present application.

Fig. 9 shows a top view of the air tube fitting of the linear motor device connected to the one-way air vent adjacent to the electromagnet 50.

Figure 10 shows a top view of the air tube of the linear motor apparatus in a suspended position.

Fig. 11 shows a top view of the air tube fitting of the linear motor apparatus connected to the one-way vent adjacent to the electromagnet 60.

Fig. 12 is a top view of the final state of the airbag inflation process of the linear motor apparatus.

Fig. 13 is a plan view of the final state of the air bag suction process of the linear motor device.

Description of reference numerals:

linear motor body 10

Groove 11

Cylinder 20

Cylinder 21

End cap 22

Piston 23

One-way air holes 221,222

Hanging position groove 223

Valve 2211 of exhaust hole

Valve 2221 of air intake

Mass 30

Base 31 of mass

L-shaped extension 32 of the mass

The trachea 40

Permanent magnet 41

Elastic member 42

Two sets of

electromagnets

50,60

Air bag 70

Controller 80

Movable part 90

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

In the existing terminal equipment, the linear motor only provides a vibration sense, the stepping motor only serves as a power source of a component, and the linear motor and the stepping motor have single functions. To the single current situation of linear motor effect, this application improves linear motor's quality piece on current linear motor's basis, and the cooperation has the cylinder of one-way bleeder vent, trachea and structures such as electro-magnet, can realize automatic charging, breathe in and vibrations function. The air bag is arranged on the air pipe in a matching way, so that the automatic inflation and air suction processes can be converted into unidirectional movement of the air bag, and the air bag can be used as a power source of the movable part to provide power for the movable part. By improving the structure of the linear motor, the linear motor not only has the function of providing the vibration sense, but also can be used as a power source of a movable part.

Referring to fig. 1, fig. 1 is a schematic structural view of a linear motor apparatus provided in the present application. Referring to fig. 1, the linear motor device mainly includes a linear motor body 10, a cylinder 20, a mass block 30, an air pipe 40, and two sets of electromagnets (50, 60).

Specifically, the linear motor body 10 has a hollow structure. The cylinder 20 is disposed separately from or in contact with the linear motor body 10, and includes a cylinder 21, an end cap 22, and a piston 23. Wherein, the end cover 22 is provided with 2 one-way air holes (221, 222). According to the function of the 2 one-way ventilating holes (221,222) when the linear motor device is in the working state, the 2 one-way ventilating holes (221,222) can be respectively called an exhaust hole 221 and an intake hole 222. Wherein, when the linear motor device is in an operating state, the exhaust hole 221 is only used for the air inside the cylinder to go out, and the intake hole 222 is only used for the air outside the cylinder to go in.

The cylinder 20 has a hollow structure, and the piston 23 is a pressure receiving member in the cylinder 20 and is disposed inside the cylinder tube 21. The piston 23 can reciprocate linearly inside the cylinder 20.

And a mass 30 including a base 31 and an L-shaped extension 32, wherein the base 31 is disposed in the hollow structure of the linear motor body 10, is slidably connected to the linear motor body 10, and can reciprocate linearly in the hollow structure, the L-shaped extension 32 extends out of the hollow structure and is connected to the piston 23 inside the cylinder 20, and the linear reciprocating motion of the base 31 of the mass 30 is transmitted to the piston 23 through the L-shaped extension 32, so that the piston 23 reciprocates linearly.

The air tube 40 has a hollow structure, is disposed adjacent to the air cylinder 20, and is sleeved with a permanent magnet 41 and an elastic member 42. The permanent magnet 41 is sleeved on one side of the air pipe 40 close to the air cylinder 20, and the elastic component 42 is sleeved on one side of the air pipe 40 far from the air cylinder 20. When subjected to a pressure in the axial direction of the air tube 40, the elastic member 42 is compressed. When the pressure is removed, the elastic member 42 is restored to the free state.

Two sets of electromagnets (50,60) are oppositely disposed around the circumference of the air tube 40, wherein each electromagnet has a coil wound thereon. When the coil is electrified, the magnetic force generated by the two groups of electromagnets (50,60) and the magnetic force of the permanent magnet 41 on the air pipe 40 interact, so that one end of the air pipe 40, which is sleeved with the permanent magnet 41, is in a suspended position or is connected to one of the 2 one-way air holes (221,222) on the end cover 22 of the air cylinder 20.

Referring to fig. 2, fig. 2 is another angular view of the linear motor body, cylinder, and mass. In a specific implementation, as shown in fig. 2, the linear motor body 10 may be designed as a hollow structure, and the cylinder 20 is disposed outside the hollow structure. Wherein, the upper surface of the hollow structure of the linear motor body 10 is provided with a groove 11. The base 31 of the mass 30 is placed inside the hollow structure, and its L-shaped extension 32 extends from the base 31 through the groove 11 to the outside of the hollow structure and is connected to the piston 23 inside the cylinder 20.

In the embodiment of the present application, the hollow structure of the linear motor body 10 may be implemented in various ways. It should be understood that the hollow rectangular parallelepiped structure shown in the drawings is only an example, and can be designed to be a hollow structure similar to a rectangular parallelepiped or other shapes, without limitation.

To show the structure of the mass 30 more clearly, please refer to fig. 3, and fig. 3 is a cross-sectional view showing the position relationship between the mass and the linear motor body.

By designing the L-shaped extension 32 for the mass 30, when the linear motor device converts the electric energy into the mechanical energy such that the base 31 of the mass 30 makes the linear reciprocating motion inside the hollow structure of the linear motor body 10, the linear reciprocating motion of the base 31 is guided to the outside of the hollow structure of the linear motor body 10 through the L-shaped extension 32 of the mass 30 and is transmitted to the piston 23 inside the cylinder 20, thereby pushing the piston 23 to make the linear reciprocating motion inside the cylinder 20.

When the piston 23 in the cylinder 20 makes a linear reciprocating motion, the control air pipe 40 is simultaneously sleeved with one end of the permanent magnet 41 to be in a suspended position, or connected to the corresponding one-way air hole of the cylinder 20, so that the vibration function of the linear motor device can be realized, or the cylinder 20 of the linear motor device is in an exhaust or suction state.

For example, an L-shaped extension 32 of the mass is connected to the piston 23, and when the base 31 of the mass 30 is linearly reciprocated, the linear reciprocation of the base 31 is transmitted to the piston 23 through the L-shaped extension 32, so that the piston 23 is also linearly reciprocated in the cylinder 20. In this process, if the end of the control air pipe 40, on which the permanent magnet 41 is mounted, is connected to the exhaust hole 221 of the air cylinder 20, the air cylinder 20 can be in an exhaust state.

If one end of the control air pipe 40, which is sleeved with the permanent magnet 41, is connected to the air inlet hole 222 of the air cylinder 20 in a matching manner, the air cylinder 20 can be in an air suction state.

If the end of the control air pipe 40, which is sleeved with the permanent magnet 41, is in the suspension position, the linear motor device only vibrates.

It will be appreciated that when the linear motor device is in a vibration state, a discharge state or a suction state, both the one-way ventilation holes (221,222) of the cylinder 20 are in an operation state. The exhaust hole 221 is only used for exhausting, and the intake hole 222 is only used for intake, and the exhaust and intake functions of the cylinder are realized by matching.

Referring to fig. 4, fig. 4 is a schematic view showing the structure of an air tube of the linear motor device. As shown in fig. 4, the air tube 40 may be designed as a hollow cylinder structure, on which a permanent magnet 41 and an elastic member 42 are sleeved. Alternatively, the elastic member 42 may be a return spring. One end of the return spring far from the permanent magnet 41 is fixedly connected to the air pipe 40, and the other end close to the permanent magnet 41 can freely slide on the air pipe 40. When the return spring is not subjected to pressure in the axial direction of the air pipe 40, the return spring is in a free state. When the return spring is subjected to a pressure in the axial direction of the air tube 40, the return spring is compressed toward the side away from the permanent magnet 41.

Referring to fig. 5, fig. 5 is a schematic structural view of a cylinder of the linear motor apparatus. As shown in fig. 5, the cylinder 20 may be a hollow cylinder structure, or may have other shapes, which is not limited herein.

The end cover 22 of the cylinder 20 is provided with 2 one-way air vents (221,222) and a suspension position groove 223. It is understood that the one-way vents (221,222) allow one-way ventilation through a structure similar to a heart valve.

It should be understood that the relative positions of the one-way vents (221,222) and the hanging position slots 223 shown in FIG. 5 are by way of example only. For example, the positions of the exhaust holes 221 and the intake holes 222 shown in fig. 5 may be interchanged.

Alternatively, the end cap 22 of the cylinder 20 may be designed as a curved surface on which the 2 one-way airing holes (221,222) and the hanging position groove 223 are disposed. The end cap 22 and the cylinder 21 of the cylinder 20 may be integrally formed.

The unidirectional air holes and the hanging position slots in the embodiment of the present application are described below with reference to fig. 6 to 8, respectively.

Referring to fig. 6, fig. 6 is a cross-sectional view of a vent structure according to an embodiment of the present application. As shown in fig. 6, when the piston 23 inside the cylinder 20 makes a linear reciprocating motion, if one end of the air tube 40, which is sleeved with the permanent magnet 41, is connected to the air discharge hole 221 on the end cover 22 of the cylinder 20 in a matching manner, the cylinder 20 is in an air discharge state.

Referring to fig. 7, fig. 7 is a sectional view of an air intake hole structure according to an embodiment of the present application. As shown in fig. 7, when the piston 23 inside the cylinder 20 makes a linear reciprocating motion, if one end of the air tube 40, which is sleeved with the permanent magnet 41, is connected to the air inlet hole 222 on the end cover 22 of the cylinder 20 in a matching manner, at this time, the cylinder 20 is in an air suction state.

Referring to fig. 8, fig. 8 is a cross-sectional view of a suspended position slot structure according to an embodiment of the present application. As shown in fig. 8, when the end of the air tube 40, on which the permanent magnet 41 is mounted, is located in the hanging position groove 223 of the end cap 22 of the air cylinder 20, the linear motor device is in a vibrating state, i.e., the linear motor device only provides a vibration sense.

It will be appreciated that the exhaust hole 221 and the intake hole 222 are respectively used to perform a one-way ventilation function thereof when the linear motor device is in a state of exhaust, suction or vibration as shown in fig. 6 to 8, respectively.

For example, when the exhaust hole 221 is in an operating state during any one of the exhaust, suction, or vibration states of the linear motor device, the valve 2211 of the exhaust hole 221 is opened toward a side away from the cylinder as indicated by a dotted arrow in fig. 6. When the intake port 222 is in an operating state, the valve 2221 of the intake port 222 is opened toward the side close to the cylinder, as indicated by the broken-line arrow in FIG. 7.

Optionally, when the linear motor device is in a vibration state, the end of the air tube 40, on which the permanent magnet 41 is sleeved, may or may not contact the air cylinder, which is not limited.

Further, it should be understood that the dangling position groove 223 is a groove on the end cap 22 of the cylinder 20, which is not communicated with the inside of the cylinder 21. The hanging position groove 223 is designed only when the end of the air tube on which the permanent magnet is mounted is in a hanging state, and is merely an example.

In another example, the end cover 22 of the cylinder 20 may not be provided with the hanging position groove 223, and only two one-way ventilation holes (221,222) are provided, without limitation.

In a specific implementation, the linear motor arrangement further comprises a controller 80. The controller 80 is used for controlling the magnetic poles generated by the two groups of electromagnets (50,60) of the linear motor device and the magnitude of the magnetic force.

Alternatively, the controller 80 may be provided in a hollow structure of the linear motor body, such as shown in fig. 3. Alternatively, when the linear motor apparatus is applied to a terminal device (e.g., a mobile phone), the controller 80 may be disposed at any suitable position inside the terminal device, and a person skilled in the art can understand how to dispose the linear motor apparatus appropriately, which is not limited in this application.

Alternatively, the number of the two sets of electromagnets (50,60) in each set can be set according to the required magnetic force. In one implementation, only one electromagnet is provided per group, or more than 1 electromagnet may be provided per group, without limitation.

In one specific implementation, the controller 80 controls the two sets of electromagnets (50,60) to generate the same magnetic poles as the permanent magnets 41 sleeved on the air tube 40. Thus, the two sets of electromagnets (50,60) generate repulsive forces that repel the permanent magnets 41, respectively. As indicated above, the controller 80 controls the magnitude of the magnetic force generated by each of the two sets of electromagnets (50,60) in addition to the magnetic poles of the two sets of electromagnets (50, 60). When the two sets of electromagnets (50,60) generate the same magnetic poles and generate repulsive forces to the permanent magnet 41, the repulsive force of the electromagnet with a larger magnetic force to the permanent magnet 41 is larger than the repulsive force of the electromagnet with a smaller magnetic force to the permanent magnet 41, so that the permanent magnet 41 is pushed to one side of the electromagnet with a smaller magnetic force, and one end of the air tube 40, which is sleeved with the permanent magnet 41, is connected with the one-way air hole close to the electromagnet with a smaller magnetic force, whereas one end of the air tube, which is sleeved with the permanent magnet 41, is connected with the other one-way air hole in a matching manner. The one-way vent and the other one-way vent are referred to herein as an exhaust hole 221 or an intake hole 222.

In another case, when the magnetic forces generated by the two sets of electromagnets (50,60) are equal, the repulsive forces generated by the two sets of electromagnets (50,60) on the permanent magnet 41 are the same, and the end of the air tube where the permanent magnet 41 is sleeved will be in a suspended position, for example, in the suspended position groove 223 on the end cover 22 of the air cylinder 20 as shown in fig. 5 or fig. 8.

Alternatively, the discharge hole 221, the intake hole 222, and the flying position groove 223 are disposed at equal intervals on the end cover 22 of the cylinder 20. The hanging position groove 223 may be disposed at a central position of the end cover 22, and the exhaust hole 221 and the intake hole 222 are respectively disposed at two sides of the hanging position groove 223, and are respectively close to a group of electromagnets.

Fig. 9-11 show several different states of the one-way vent where the air tube is coupled to the air cylinder, respectively. Figure 9 shows a top view of the air tube 40 connected to one of the one-way air vents adjacent the electromagnet 50. Figure 10 shows a top view of the air tube 40 in a suspended position. Fig. 11 shows a top view of air tube 40 connected to a one-way vent adjacent electromagnet 60.

Assuming that the one-way airing hole adjacent to the electromagnet 50 is provided as the exhaust hole 221 and the one-way airing hole adjacent to the electromagnet 60 is provided as the intake hole 222, fig. 9 to 11 illustrate the switching process of the cylinder 20 between the exhaust state, the vibration state, and the suction state.

The linear motor device provided by the present application has been described in detail above with respect to the vibration providing function and the automatic air discharging and air sucking function, and the following describes a scheme in which the linear motor device of the present application is used as a power source to provide power to a movable member.

As described above, the air tube 40 has a hollow structure, and when the linear motor device is in an operating state, one end of the air tube 40, which is sleeved with the permanent magnet 41, is switched between 2 one-way air holes (221,222) and a suspension position on the end cover 22 of the air cylinder 20. In the embodiment in which the linear motor means supplies power to the movable member 90, the air bag 70 may be connected to the other end of the air tube 40 opposite to the end where the permanent magnet 41 is installed, whereby the process of exhausting and sucking the air of the air cylinder 20 may be changed into a unidirectional motion and used as a power source to supply power to the movable member 90.

In a specific implementation, the volume and size of the air bag 70 are both adjustable, and the customization degree is high.

Fig. 12 shows the final state of the airbag inflation process of the linear motor device. As shown in fig. 12, when the end of the air tube 40, on which the permanent magnet 41 is mounted, is coupled to the air outlet 221 of the air cylinder 20, the air in the air cylinder 20 is filled in the air bag 70 through the air tube 40. As air is continuously filled into the air cell 70, the air cell 70 is in an inflation process, and fig. 12 shows a final state of the inflation process.

Fig. 13 shows the final state of the air bag suction process of the linear motor device. As shown in fig. 13, when one end of the air tube, on which the permanent magnet 41 is mounted, is coupled to the air inlet hole 222, the air in the air bag 70 is sucked into the air cylinder 20 through the air tube. As the air within the bladder 70 is drawn out, the air within the bladder 70 decreases, and the final state of the inhalation process is shown in FIG. 13.

Meanwhile, the movable part 90 in the terminal device may be connected to the air bag 70, and thus, when the air bag 70 is in the process of inhaling or inflating, the power generated by the unidirectional movement of the air bag 70 may be used as a power source of the movable part (e.g., a camera or a retractable earphone).

For example, the movable part 90 may be a camera of the terminal device. Taking fig. 12 and 13 as an example, when the air bag 70 is inflated, the camera is pushed out from the original position to the side away from the cylinder by a certain displacement under the pushing force generated by the unidirectional movement (the movement direction is away from the cylinder) of the air bag 70. When the air bag 70 is in the process of inhaling, the camera is pulled back to the original position along with the air bag 70 in the process of unidirectional movement (the moving direction is close to the air cylinder) of the air bag 70.

The specific connection between the movable element 90 and the air bag 70 is not limited in this application, and those skilled in the art can select a suitable connection.

Compare with current linear motor, the linear motor device that this application provided has expanded the function that current linear motor only provided vibrations, makes it not only provide vibrations, can also realize automatic inflation, inspiratory function and as the power supply, can full play linear motor device's effect, realizes more functions, saves inside step motor or other complicated mechanisms as the power supply originally of terminal equipment.

When the linear motor device provided by the application is applied to the terminal equipment, the space of the terminal equipment can be saved, and the terminal equipment is light and small.

It should be understood that the structures of the respective components and the connection relationships between the components in the linear motor device shown in fig. 1 to 13 are only schematic illustrations, and any alternative structures of the components that function the same as each component are within the scope of protection of the embodiments of the present application.

In addition, in the embodiments of the present application, the terms "connected", "fixedly connected", "slidably connected", and the like should be construed broadly unless otherwise explicitly specified or limited. Specific meanings of the above-mentioned various terms in the embodiments of the present application can be understood by those skilled in the art according to specific situations.

Illustratively, for "connection", various connection methods such as fixed connection, rotation connection, flexible connection, mobile connection, integral molding, electrical connection, and the like can be used. May be directly connected to one another or may be indirectly connected to one another through intervening media, or may be interconnected within two elements or in an interactive relationship between the two elements.

For example, the explanation of "contact" may be that one element is in direct contact or indirect contact with another element, and furthermore, the contact between two elements described in the embodiments of the present application may be understood as a contact within an allowable range of mounting error, and there may be a small gap due to the mounting error.

By way of example, with respect to "fixedly attached," it is possible that one element may be directly or indirectly fixedly attached to another element; the fixed connection may include mechanical connection, welding, bonding, and the like, wherein the mechanical connection may include riveting, bolting, screwing, keying, snapping, latching, plugging, and the like, and the bonding may include adhesive bonding, solvent bonding, and the like.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A linear motor apparatus, comprising:

a linear motor body having a hollow structure;

a mass block including a base and an L-shaped extension, wherein the base is disposed in the hollow structure of the linear motor body, is slidably connected with the linear motor body, and can reciprocate linearly in the hollow structure, and the L-shaped extension extends out of the hollow structure and is connected with the piston inside the cylinder;

2. The linear motor apparatus of claim 1, wherein the two unidirectional vents comprise an intake hole and an exhaust hole, wherein,

when the piston in the cylinder makes linear reciprocating motion and one end of the air pipe, which is sleeved with the permanent magnet, is connected to the air inlet hole, the cylinder is in an air suction state;

3. The linear motor device according to claim 1 or 2, wherein an air bag is connected to an end of the air tube away from the air cylinder, when an end of the air tube on which the permanent magnet is fitted is connected to the air inlet hole in a fitting manner, air in the air bag is sucked into the air cylinder through the air tube, and the air bag is in a suction state and moves in a single direction;

4. The linear motor apparatus according to claim 3, further comprising:

when the controller controls the magnetic poles generated by the two groups of electromagnets to be the same, and the magnetic force of the group of electromagnets close to the air inlet is greater than that of the group of electromagnets close to the air outlet, one end of the air pipe sleeved with the permanent magnet is connected to the air outlet in a matched manner, and the air bag is in the inflated state;

when the controller controls the magnetic poles generated by the two groups of electromagnets to be the same and the magnetic force of one group of electromagnets close to the air inlet hole is smaller than that of one group of electromagnets close to the air outlet hole, one end of the air pipe, which is sleeved with the permanent magnet, is connected to the air inlet hole in a matched mode, and the air bag is in an air suction state.

5. A linear motor apparatus as claimed in claim 3 or 4, wherein the size and volume of the air-bag is adjustable.

6. The linear motor apparatus according to any one of claims 3 to 5, wherein a movable member is connected to the other end of the air bag opposite to the end connected to the cylinder, and when the air bag is in the air-breathing state or the inflated state, the movable member is powered by power generated by unidirectional movement of the air bag due to air-breathing or inflation.

7. A linear motor apparatus according to any one of claims 1 to 6, wherein the resilient member is a return spring.

8. Terminal device, characterized in that it comprises a linear motor arrangement according to any one of claims 1 to 7.