Motor structure and electronic device

Abstract

This utility model relates to the field of motor structures, and discloses a motor structure and electronic device. The motor structure of this utility model includes: a base, a transmission unit, a carrier, a detection unit, and a control chip; the transmission unit includes: a drive module mounted on the carrier and a guide fixedly mounted on the base; the drive module drives the carrier to move along the guide; the detection unit includes: a first detection module mounted on the carrier and a second detection module mounted on the base; as the first detection module moves with the carrier, the electrical signal generated by the detection unit changes, and the moving distance of the carrier is determined based on the electrical signal; the first detection module and / or the drive module are in contact with the guide, the guide is conductive, and the first detection module and / or the drive module are electrically connected to the control chip through the guide. Achieving electrical connection between the components on the carrier and the control chip using the original structure of the motor structure is beneficial for the miniaturization of the motor structure.

Description

Technical Field

[0001] This utility model relates to the field of motor structure, and in particular to a motor structure and electronic device. Background Technology

[0002] A motor structure typically includes a base and a carrier, with the carrier moving relative to the base. Power-consuming components are usually mounted on the carrier, such as detection components to monitor the carrier's movement or drive components to propel the carrier.

[0003] However, the design for powering the components on the carrier has the following problems: Since the position of the carrier relative to the control chip (which connects to the components on the carrier to provide electrical signals) can change, the design of the electrical connectors needs to consider the reliability issues caused by these relative position changes. This is especially true in large-stroke motor structures, where the carrier's travel distance is significant. If a flexible circuit board is used to connect the components on the carrier to the control chip, ample deformation space is required for the flexible circuit board to avoid affecting the carrier's movement, which is detrimental to the miniaturization design of the motor. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a motor structure and electronic device that utilizes the conductive part in the original transmission unit of the motor structure to achieve electrical connection between the detection unit and the control chip, without occupying additional internal space of the motor structure, which is beneficial to the miniaturization of the motor structure.

[0005] To solve the above-mentioned technical problems, embodiments of this utility model provide a motor structure, including: a base, a transmission unit, a carrier, a detection unit, and a control chip; the transmission unit includes: a drive module disposed on the carrier and a guide fixedly disposed on the base; the drive module drives the carrier to move along the guide; the detection unit includes: a first detection module disposed on the carrier and a second detection module disposed on the base; during the movement of the carrier by the first detection module, the electrical signal generated by the detection unit changes, and the moving distance of the carrier is determined according to the electrical signal; the first detection module and / or the drive module are in contact with the guide, the guide is conductive, and the first detection module and / or the drive module are electrically connected to the control chip through the guide.

[0006] An embodiment of this utility model also provides an electronic device, including the motor structure described above.

[0007] Compared to existing technologies, this embodiment of the invention involves a carrier moving relative to a base via a transmission unit. The transmission unit includes a drive module and a guide member. The drive module provides driving force for the carrier's movement, and the guide member defines the direction of movement. Additionally, the motor structure includes a detection unit for detecting the distance the carrier has moved relative to the base. This detection unit includes a first detection module and a second detection module. The first detection module is mounted on the carrier, and the second detection module is mounted on the base. The first detection module and / or the drive module are in contact with the guide member. Because the guide member is conductive, it allows for electrical connection to the control chip. This enables the supply of electrical signals to components on the carrier that require power without the need for an additional flexible circuit board connecting the components on the carrier to the control chip. For example, electrical signals can be applied to the first detection module and / or the drive module, saving internal space in the motor structure, promoting miniaturization, and reducing the circuit connections, thus saving costs.

[0008] Additionally, the guide includes a first sub-part that contacts the first detection module and a second sub-part that contacts the fourth connecting part, wherein the currents on the first sub-part and the second sub-part do not affect each other; the first detection module is electrically connected to the control chip via the first sub-part; and the drive module is electrically connected to the control chip via the second sub-part.

[0009] Additionally, the second sub-section includes: a first guide rod and a second guide rod; the currents on the first guide rod and the second guide rod do not affect each other; the drive module includes: a first current inflow end and a first current outflow end; the first current inflow end is in contact with the first guide rod, and the first current outflow end is in contact with the second guide rod.

[0010] In addition, the first sub-part is located outside the plane containing the first guide rod and the second guide rod, and the straight line containing the first guide rod, the straight line containing the second guide rod, and the straight line containing the first sub-part are parallel.

[0011] In addition, when the detection unit is a capacitive detection unit, the first detection module includes: an integrally formed first connecting part and a first electrode plate, the first connecting part being in contact with the guide member; the second detection module includes: an integrally formed second connecting part and a second electrode plate, the first electrode plate and the second electrode plate forming a capacitor structure; when the detection unit is an inductive detection unit, the first detection module includes: a first coil, a third connecting part and a fourth connecting part, the third connecting part, the first coil and the fourth connecting part being connected sequentially in the direction of current; the second detection module includes at least: a second coil; the first coil and the second coil forming an inductive structure; when the detection unit is an electromagnetic detection unit, the first detection module includes: a magnetic sensor and a fifth connecting part; the second detection module includes at least: a magnetic element; the magnetic sensor and the magnetic element are disposed opposite to each other.

[0012] In addition, when the detection unit is a capacitive detection unit, the guide includes: a third guide rod; the carrier includes a third through hole; the third guide rod passes through the carrier through the third through hole; the first connecting portion at least partially contacts the third guide rod at the location of the third through hole.

[0013] In addition, the motor structure also includes a third conductive part electrically connected to the third guide rod and the control chip; the third conductive part includes a third fixing member disposed around the third guide rod, the shape of the third fixing member matching the cross-sectional shape of the third guide rod.

[0014] In addition, when the detection unit is an inductive detection unit, the guide includes a fourth guide rod and a fifth guide rod; the carrier includes a fourth through hole and a fifth through hole; the fourth guide rod passes through the carrier through the fourth through hole, and the fifth guide rod passes through the carrier through the fifth through hole; the third connecting portion contacts the fourth guide rod at least partially at the position of the fourth through hole, and the fourth connecting portion contacts the fifth guide rod at least partially at the position of the fifth through hole.

[0015] In addition, the driving module includes a piezoelectric ceramic and an ultrasonic driving block; the piezoelectric ceramic is connected to the ultrasonic driving block, and the piezoelectric ceramic applies a force to the ultrasonic driving block through deformation, and the ultrasonic driving block drives the carrier to move along the guide under the force. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0017] Figure 1 This is a structural schematic diagram of a motor structure according to an embodiment of this solution; Figure 2 This is a three-dimensional structural diagram of a guide component for a motor structure according to an embodiment of this solution; Figure 3 This is a three-dimensional structural diagram of the motor structure according to a capacitive detection unit in an embodiment of this solution; Figure 4 This is a structural schematic diagram of the third fixing component of a motor structure according to an embodiment of this solution; Figure 5 This is a schematic diagram of the structure of the first coil of a motor structure according to an embodiment of this solution; Figure 6 This is a three-dimensional structural diagram of a motor structure based on an inductive detection unit in an embodiment of this solution.

[0018] Figure label: 1-Base; 2-Transmission unit; 21-Drive module; 22-Guide component; 211-First current inflow terminal; 212-First current outflow terminal; 221-First sub-section; 222-Second sub-section; 2221-First guide rod; 2222-Second guide rod; 2223-Third guide rod; 2224-Fourth guide rod; 2225-Fifth guide rod; 3-Carrier; 34-Fourth through hole; 35-Fifth through hole; 4-Detection unit; 41-First detection module; 42-Second detection module; 43-First coil; 44-Second coil; 411-First connecting part; 412-First electrode plate; 421-Second connecting part; 422-Second electrode plate; 431-Third connecting part; 432-Fourth connecting part; 5-Control chip; 51-First conductive part; 52-Second conductive part; 53-Third conductive part; 531-Third fixing part. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been presented in the various embodiments of this utility model to enable readers to better understand this application. However, the technical solutions claimed in this application can be implemented even without these technical details and various changes and modifications based on the following embodiments.

[0020] The division of the following embodiments is for ease of description and should not constitute any limitation on the specific implementation of this utility model. The various embodiments can be combined with or referenced by each other without contradiction.

[0021] The embodiments of this utility model relate to a motor structure, such as... Figure 1 As shown, the system includes: a base 1, a transmission unit 2, a carrier 3, a detection unit 4, and a control chip 5. The transmission unit 2 includes: a drive module 21 mounted on the carrier 3 and a guide member 22 fixedly mounted on the base 1. The drive module 21 drives the carrier 3 to move along the guide member 22. The detection unit 4 includes: a first detection module 41 mounted on the carrier 3 and a second detection module 42 mounted on the base 1. During the movement of the carrier 3, the electrical signal generated by the first detection module 41 changes, and the moving distance of the carrier 3 is determined based on the electrical signal. The first detection module 41 and / or the drive module 21 are in contact with the guide member 22, which is conductive. The first detection module 41 and / or the drive module 21 are electrically connected to the control chip 5 through the guide member 22.

[0022] Figure 1 The diagram only shows the connection between the first detection module 41 and the control chip 5 via the guide 22. The connection between the drive module 21 and the control chip via the guide 22 will be explained in the following description.

[0023] The guide component 22 can be a guide rail, guide rod, sliding shaft, or ball bearing, etc. The carrier can move along the guide rod or guide rail, or the carrier can move in the direction of the sliding shaft, or the carrier can move via the ball bearing, etc. The guide component 22 can be a component structure. For example, when the guide component 22 is a guide rod, the guide component consists of multiple guide rods, and the number of guide rods can be three, four, or more. All guide rods play a role in supporting the carrier and controlling the direction of movement. Some or all of the guide rods also serve as electrical connectors for components set on the carrier structure. The drive module can be magnetically driven or ultrasonically driven, etc. When the drive module is ultrasonically driven, the drive module includes: piezoelectric ceramic and ultrasonic drive block; the piezoelectric ceramic is connected to the ultrasonic drive block, and the piezoelectric ceramic applies a force to the ultrasonic drive block through deformation. Under the force, the ultrasonic drive block drives the carrier to move along the guide component. During the driving process, the piezoelectric ceramic undergoes expansion and contraction due to the voltage change at both ends. The high-frequency expansion and contraction of the piezoelectric ceramic drives the ultrasonic drive block to creep on the guide component, thereby realizing the movement of the carrier along the guide component. The ultrasonic drive block can also be called an ultrasonic creeping block. Ultrasonic actuation avoids the influence of external magnetic fields on the motor drive. Furthermore, since no magnet structure is needed in the drive module, high-temperature demagnetization does not occur during the high-temperature processing of the motor structure, ensuring the stability of the motor drive. In the case of a magnetically driven drive module, the module includes a magnet and a drive coil. The energized drive coil receives an Ampere force in the magnetic field generated by the magnet, thus driving the carrier.

[0024] Compared to existing technologies, this embodiment of the invention involves a carrier moving relative to a base via a transmission unit. The transmission unit includes a drive module and a guide member. The drive module provides driving force for the carrier's movement, and the guide member defines the direction of movement. Additionally, the motor structure includes a detection unit for detecting the distance the carrier moves relative to the base. This detection unit includes a first detection module and a second detection module. The first detection module is mounted on the carrier, and the second detection module is mounted on the base. The first detection module contacts the guide member. Because the guide member is conductive, the first detection module can achieve electrical connection with the control chip via the guide member. This allows for the application of electrical signals to the first detection module without the need for an additional flexible circuit board between the first detection module and the control chip, saving internal space in the motor structure, promoting miniaturization, and reducing the number of components, thus saving costs.

[0025] In addition, such as Figure 2As shown, the guide includes a first sub-part 221 and a second sub-part 222, the currents on the first sub-part 221 and the second sub-part 222 are independent of each other; the first detection module is electrically connected to the control chip via the first sub-part 221; the drive module is electrically connected to the control chip via the second sub-part 222. The lines through which the control chip transmits signals to the first detection module and the drive module are independent of each other.

[0026] like Figure 3 As shown, the second sub-section includes: a first guide rod 2221 and a second guide rod 2222; the currents on the first guide rod 2221 and the second guide rod 2222 do not affect each other; the drive module 21 includes: a first current inflow end 211 and a first current outflow end 212; the first current inflow end 211 is in contact with the first guide rod 2221, and the first current outflow end 212 is in contact with the second guide rod 2222. One end of the first conductive part 51 is in contact with the first guide rod 2221, and the other end of the first conductive part 51 is connected to the corresponding pin of the control chip 5; one end of the second conductive part 52 is in contact with the second guide rod 2222, and the other end of the second conductive part 52 is connected to the corresponding pin of the control chip 5, thereby forming a connection loop between the drive module and the control chip.

[0027] Furthermore, the detection unit used to detect the moving distance of the carrier can be a capacitive detection unit, an inductive detection unit, or an electromagnetic detection unit, etc. When the detection unit is a capacitive detection unit, the first detection module includes: an integrally formed first connecting part and a first electrode plate, the first connecting part contacting the guide member; the second detection module includes: an integrally formed second connecting part and a second electrode plate, the first electrode plate and the second electrode plate forming a capacitor structure; when the detection unit is an inductive detection unit, the first detection module includes: a first coil, a third connecting part, and a fourth connecting part, the third connecting part, the first coil, and the fourth connecting part connected sequentially according to the current direction; the second detection module includes at least: a second coil; the first coil and the second coil form an inductive structure; when the detection unit is an electromagnetic detection unit, the first detection module includes: a magnetic sensor and a fifth connecting part; the second detection module includes at least: a magnetic element; the magnetic sensor and the magnetic element are arranged opposite each other.

[0028] like Figure 3As shown, when the detection unit is a capacitive detection unit, the guide includes a third guide rod 2223; the carrier includes a third through hole; the third guide rod 2223 passes through the carrier 3 through the third through hole. The first detection module 41 includes an integrally formed first connecting part 411 and a first electrode plate 412, and the second detection module 42 includes an integrally formed second connecting part 421 and a second electrode plate 422. The first electrode plate 412 and the second electrode plate 422 constitute a capacitor structure. When the first electrode plate and the second electrode plate are arranged opposite each other perpendicular to the direction of carrier movement, the facing area of ​​the first electrode plate 412 and the second electrode plate 422 changes with the movement of the carrier. When the first electrode plate and the second electrode plate are arranged opposite each other in the direction of carrier movement, the distance between the first electrode plate 412 and the second electrode plate 422 changes with the movement of the carrier. According to the physical formula of a parallel plate capacitor: C=εS / 4πkd, where ε represents the dielectric constant of the medium, which is determined by the medium between the plates, such as air, water, etc.; k represents the electrostatic constant, also known as the Coulomb constant, k=8.987551×10 9 N·m 2 / C; S represents the area (projected area) of the two plates facing each other; d represents the vertical distance between the two plates. In the motor structure of this scheme, the distance between the first and second plates is very small, for example, the distance can be set to 0.1 micrometers to 0.2 micrometers. As can be seen from the formula, for two capacitor plates, changing the area of ​​the two plates facing each other and the distance between the plates can change the capacitance, that is, the change in capacitance can reflect the movement distance of the carrier.

[0029] When the first connecting part 411 is embedded in the carrier, the first connecting part 411 contacts the third guide rod 2223 at least partially through the third through hole. Since the third guide rod passes through the third through hole, the first connecting part exposed at the third through hole can directly contact the third guide rod to avoid additional drilling in the carrier.

[0030] like Figure 3 As shown, the motor structure also includes a third conductive part 53 electrically connected to the third guide rod 2223 and the control chip 5. The control chip 5 applies an electrical signal to the first electrode plate 412 through the third conductive part 53, the third guide rod 2223 and the first connection part 411.

[0031] like Figure 4 As shown, the third conductive part 53 includes a third fixing member 531 disposed around the third guide rod 2223. The shape of the third fixing member 531 matches the cross-sectional shape of the third guide rod 2223. For example, when the cross-sectional shape of the third guide rod 2223 is circular, the shape of the third fixing member 531 is an annular, and the radius of the circular cross-section of the third guide rod is the same as the inner radius of the annular shape of the third fixing member. The third fixing member 531 is made of conductive material, such as an iron ring.

[0032] When the detection unit is an inductive detection unit, such as Figure 5 As shown, the first detection module includes: a first coil, a third connecting part 431, and a fourth connecting part 432, which are connected sequentially according to the current direction. Figure 6 As shown, the guide includes a fourth guide rod 2224 and a fifth guide rod 2225; the carrier includes a fourth through hole 34 and a fifth through hole 35; the fourth guide rod 2224 passes through the carrier through the fourth through hole 34, and the fifth guide rod 2225 passes through the carrier through the fifth through hole 35; the third connecting part 431 at least partially contacts the fourth guide rod 2224 at the position of the fourth through hole 34, and the fourth connecting part 432 at least partially contacts the fifth guide rod 2225 at the position of the fifth through hole 35. The first coil 43 of the first detection unit and the second coil 44 of the second detection unit are arranged opposite to each other. When the distance or the area of ​​the opposite side of the first coil 43 and the second coil 44 changes, the inductance changes due to the mutual inductance effect between the first coil 43 and the second coil 44. The movement distance of the carrier can be inferred from the change in inductance.

[0033] In practical applications, the first detection module can be embedded inside the carrier, which is obtained by injection molding. The first detection module is fixed inside the carrier during injection molding, which can ensure that the first detection module moves synchronously with the carrier.

[0034] The first sub-section is located outside the plane containing the first and second guide rods, and the lines containing the first guide rod, the second guide rod, and the first sub-section are parallel. These lines are aligned with the direction of carrier movement. Similarly, when a third, fourth, and fifth guide rod are provided, their lines are also aligned with the direction of carrier movement. A triangular stabilizing structure composed of at least three guide rods further enhances carrier stability.

[0035] When the detection unit is an electromagnetic detection unit, the magnetic sensor (such as a Hall sensor or TMR) is mounted on the carrier. The magnetic sensor is connected to the control chip via a guide, and the control chip supplies power to the magnetic sensor. The magnetic component of the electromagnetic detection unit is positioned opposite the magnetic sensor. If the drive module uses magnetic drive, the magnetic component in the electromagnetic detection unit can reuse the magnet used in the magnetic drive case, reducing the number of components in the motor structure and saving costs.

[0036] In addition, this embodiment of the solution also includes connecting the drive module to the control chip only through the guide, and setting the detection unit to a detection method that does not require electrical connection. For example, in the electromagnetic detection solution, the magnetic component is placed on the carrier and the magnetic sensor is placed at the corresponding position on the base. Since the magnetic component does not require power supply, the electromagnetic detection unit does not need to be connected to the circuit through the guide.

[0037] The first guide rod, second guide rod, third guide rod, fourth guide rod, and fifth guide rod mentioned in the above embodiments can all represent a guide rod group. The first guide rod, second guide rod, third guide rod, fourth guide rod, and fifth guide rod are not limited to being a single rod-shaped structure; they can be a combination of multiple rod-shaped structures to facilitate flexible configuration of the electrical connections between the drive module and the detection unit in the motor structure. For example, in actual implementation, if the drive module requires four electrical connections, the first guide rod and second guide rod can provide at least four independent connection lines.

[0038] This utility model also relates to an electronic device, including the motor structure described above.

[0039] Compared with related technologies, the electronic device provided in this embodiment of the present invention is equipped with the motor structure provided in the aforementioned embodiments. Therefore, it also has the same technical effects provided in the aforementioned embodiments, and will not be described in detail here.

[0040] Those skilled in the art will understand that the above embodiments are specific embodiments for implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A motor structure, characterized in that, include: Base, transmission unit, carrier, detection unit, and control chip; The transmission unit includes: a drive module disposed on the carrier and a guide component fixedly disposed on the base; the drive module drives the carrier to move along the guide component; The detection unit includes: a first detection module disposed on the carrier and a second detection module disposed on the base; As the first detection module moves with the carrier, the electrical signal generated by the detection unit changes, and the moving distance of the carrier is determined based on the electrical signal. The first detection module and / or the driving module are in contact with the guide member, which is conductive, and the first detection module and / or the driving module are electrically connected to the control chip via the guide member.

2. The motor structure according to claim 1, characterized in that, The guide includes a first sub-part and a second sub-part, wherein the current on the first sub-part and the second sub-part does not affect each other; The first detection module is electrically connected to the control chip via the first sub-unit; The drive module is electrically connected to the control chip via the second sub-section.

3. The motor structure of claim 2, wherein The second sub-section includes: a first guide rod and a second guide rod; the currents on the first guide rod and the second guide rod do not affect each other; The driving module includes: a first current inflow terminal and a first current outflow terminal; The first current inflow end is in contact with the first guide rod, and the first current outflow end is in contact with the second guide rod.

4. The motor structure of claim 3, wherein The first sub-part is located outside the plane containing the first guide rod and the second guide rod, and the straight line containing the first guide rod, the straight line containing the second guide rod, and the straight line containing the first sub-part are parallel.

5. The motor structure according to claim 1, characterized in that, When the detection unit is a capacitive detection unit, the first detection module includes: an integrally formed first connecting part and a first electrode plate, the first connecting part being in contact with the guide member; the second detection module includes: an integrally formed second connecting part and a second electrode plate, the first electrode plate and the second electrode plate forming a capacitor structure. When the detection unit is an inductive detection unit, the first detection module includes: a first coil, a third connecting part, and a fourth connecting part, wherein the third connecting part, the first coil, and the fourth connecting part are connected sequentially in the direction of current; the second detection module includes at least: a second coil; the first coil and the second coil constitute an inductive structure; When the detection unit is an electromagnetic detection unit, the first detection module includes a magnetic sensor and a fifth connecting part; the second detection module includes at least a magnetic component; the magnetic sensor and the magnetic component are arranged opposite to each other.

6. The motor structure of claim 5, wherein When the detection unit is a capacitive detection unit, the guide includes: a third guide rod; The carrier includes a third through hole; The third guide rod passes through the carrier via the third through hole; The first connecting portion contacts the third guide rod at least partially at the location of the third through hole.

7. The motor structure according to claim 6, characterized in that, Also includes: A third conductive part electrically connected to the third guide rod and the control chip; The third conductive part includes a third fixing member disposed around the third guide rod, the shape of the third fixing member matching the cross-sectional shape of the third guide rod.

8. The motor structure according to claim 5, characterized in that, When the detection unit is an inductive detection unit, the guide includes: a fourth guide rod and a fifth guide rod; The carrier includes a fourth through hole and a fifth through hole; The fourth guide rod passes through the carrier through the fourth through hole, and the fifth guide rod passes through the carrier through the fifth through hole; The third connecting portion contacts the fourth guide rod at least partially through the fourth through hole, and the fourth connecting portion contacts the fifth guide rod at least partially through the fifth through hole.

9. The motor structure according to any one of claims 1 to 8, characterized in that, The driving module includes: piezoelectric ceramic and ultrasonic driving block; The piezoelectric ceramic is connected to the ultrasonic driving block. The piezoelectric ceramic applies a force to the ultrasonic driving block through deformation. Under the force, the ultrasonic driving block drives the carrier to move along the guide.

10. An electronic device, characterized in that, include: The motor structure as described in any one of claims 1 to 9.

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