Camera lifting device and mobile terminal

Abstract

The camera lifting device of the present application includes: a bracket, including a driving bracket, a connecting bracket and an elastic connecting member, the connecting bracket is used to fix the camera, the driving bracket and the connecting bracket are against each other and connected through the elastic connecting member; a driving member, used to provide power for the driving bracket to lift; a gear rack transmission assembly, connecting the driving member and the driving bracket of the bracket. The present application uses the gear rack transmission assembly for transmission, which can achieve a larger transmission ratio, drive the camera to lift faster, and improve the lifting efficiency.

Description

Technical Field

[0001] This application relates to the field of terminal technology, specifically to a camera lifting device and a mobile terminal. Background Art

[0002] Currently, maximizing screen-to-body ratio is a design trend for mobile terminal devices, represented by smartphones. Since the front-facing camera must be placed on the side of the phone screen, it poses a great challenge to the design of full-screen displays.

[0003] Existing mobile terminals use a pop-up camera design to quickly extend and retract the camera, eliminating the need for a camera hole on the front of the screen and significantly improving screen-to-body ratio and display quality. However, existing pop-up designs all use lead screw drives, resulting in a small transmission ratio and low lifting efficiency. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides a camera lifting device and a mobile terminal, which can improve the lifting efficiency of the camera.

[0005] To address the aforementioned technical problems, this application provides a camera lifting device, comprising:

[0006] A bracket is used to fix the camera.

[0007] A driving component, used to provide power to drive the bracket to lift and lower;

[0008] A gear and rack transmission assembly connects the drive component and the bracket.

[0009] The gear and rack transmission assembly includes a rack and a gear. The rack is connected to the bracket, the gear is connected to the drive component, and the rack meshes with the gear.

[0010] The rack is a flexible rack, the gear includes a first gear and a second gear, the rack is a closed ring, the first gear and the second gear are respectively disposed at both ends of the rack and mesh with the inner surface of the rack, the first gear is connected to the driving component, and the second gear is rotatably disposed.

[0011] The bracket includes a drive bracket, a connecting bracket, and an elastic connector. The two ends of the elastic connector are respectively connected to the drive bracket and the connecting bracket and are arranged along the lifting direction of the bracket. The drive bracket is connected to the rack. The connecting bracket is used to fix the camera. The two sides of the connecting bracket are provided with limiting elongated holes along the lifting direction of the drive bracket. The drive bracket is provided with a limiting block. The limiting block is slidably arranged in the limiting elongated hole and abuts against the lower sidewall of the limiting elongated hole under the action of the elastic connector.

[0012] The rack is a hardened rack, the rack is bar-shaped, and the gear meshes with the upper surface of the rack.

[0013] The bracket includes a drive bracket, a connecting bracket, and an elastic connector. The two ends of the elastic connector are respectively connected to the drive bracket and the connecting bracket and are arranged along the lifting direction of the bracket. The drive bracket is connected to the rack. The connecting bracket is used to fix the camera. The connecting bracket has a limiting plate perpendicular to the lifting direction of the drive bracket on one side near the drive bracket. The drive bracket abuts against the limiting plate under the action of the elastic connector.

[0014] It also includes a limiting groove and a limiting slider. The limiting groove is arranged along the lifting direction of the bracket. The limiting slider is connected to the rack. The limiting slider and the limiting groove are slidably connected. The drive bracket is integrally formed from the upper end of the rack.

[0015] The bracket includes a drive bracket, a connecting bracket, and an elastic connector. The drive bracket is connected to the rack, the connecting bracket is used to fix the camera, and the drive bracket and the connecting bracket abut against each other and are connected through the elastic connector.

[0016] The connecting bracket is equipped with a magnet, which is used to cooperate with a magnetic field sensor to generate a magnetic induction signal to characterize the position of the connecting bracket.

[0017] This application also provides a mobile terminal, including:

[0018] case;

[0019] The camera lifting device described above is disposed within the housing;

[0020] The camera is housed in a first position within the housing and can be driven by the camera lifting device to move from the first position to a second position to protrude from the housing.

[0021] As described above, the camera lifting device of this application includes a bracket, a drive component, and a gear and rack transmission assembly. The bracket is used to fix the camera, the drive component provides power to drive the bracket to lift and lower, and the gear and rack transmission assembly connects the drive component and the bracket. This application uses a gear and rack transmission assembly for transmission, which can achieve a larger transmission ratio, drive the camera to lift and lower quickly, and improve lifting efficiency.

[0022] The mobile terminal of this application includes a housing, a camera lifting device as described above, and a camera. The camera lifting device is disposed within the housing, and the camera is housed in a first position within the housing and can be driven by the camera lifting device to move from the first position to a second position to protrude from the housing. This application utilizes the camera lifting device to achieve the extension and retraction of the camera, thereby enabling a full-screen design, and the camera lifting efficiency is high. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a camera lifting device according to an embodiment;

[0024] Figure 2 yes Figure 1 One of the schematic diagrams of a portion of the camera lifting device in the image;

[0025] Figure 3 yes Figure 1 The second schematic diagram of the partial structure of the camera lifting device in the image;

[0026] Figure 4 yes Figure 1 The third schematic diagram of the partial structure of the camera lifting device in the image;

[0027] Figure 5 yes Figure 1 The fourth schematic diagram of the partial structure of the camera lifting device in the image;

[0028] Figure 6 yes Figure 1 One of the schematic diagrams of the camera lifting device in the buffer state;

[0029] Figure 7 yes Figure 1 The second schematic diagram of the camera lifting device in the buffer state;

[0030] Figure 8 yes Figure 1 The third schematic diagram of the camera lifting device in the buffer state;

[0031] Figure 9 This is a schematic diagram of the overall structure of a camera lifting device according to another embodiment;

[0032] Figure 10 yes Figure 9 Another overall structural diagram of the camera lifting device in the diagram;

[0033] Figure 11 yes Figure 9 One of the schematic diagrams of a portion of the camera lifting device in the image;

[0034] Figure 12yes Figure 9 The second schematic diagram of the partial structure of the camera lifting device in the image;

[0035] Figure 13 yes Figure 9 One of the schematic diagrams of the camera lifting device in the buffer state;

[0036] Figure 14 yes Figure 9 The second schematic diagram of the camera lifting device in the buffer state;

[0037] Figure 15 yes Figure 9 The third schematic diagram of the camera lifting device in the buffer state;

[0038] Figure 16 yes Figure 9 The fourth schematic diagram of the camera lifting device in the buffer state;

[0039] Figure 17 This is a schematic diagram of the structure of a terminal when the camera is in a first position, according to one embodiment;

[0040] Figure 18 This is a schematic diagram of the structure of a terminal when the camera is in a second position, according to one embodiment;

[0041] Figure 19 This is a schematic diagram of the terminal structure when the camera lifting device is in a buffer state, according to one embodiment. DETAILED DESCRIPTION

[0042] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification.

[0043] In the following description, reference is made to the accompanying drawings, which illustrate several embodiments of the present application. It should be understood that other embodiments may also be used, and mechanical, structural, electrical, and operational changes may be made without departing from the spirit and scope of the present application. The following detailed description should not be considered limiting, and the scope of the embodiments of the present application is defined only by the claims of the published patents. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the present application.

[0044] Although the terms first, second, etc., are used in some instances to describe various elements herein, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.

[0045] Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, step, operation, element, component, item, kind, and / or group, but do not preclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are to be interpreted inclusively, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition occur only when combinations of elements, functions, steps, or operations are inherently mutually exclusive in some way.

[0046] Figure 1 This is a schematic diagram of the overall structure of a camera lifting device according to one embodiment. Figure 1 As shown, the camera lifting device in this embodiment includes a bracket 13, a drive component 11, and a gear and rack transmission assembly 12. The bracket 13 is used to fix the camera 19, the drive component 11 is used to provide power to drive the bracket 131 to lift. The gear and rack transmission assembly 12 connects the drive component 11 and the bracket 13.

[0047] The drive unit 11 is used to provide power for the lifting and lowering of the drive bracket 131. In this embodiment, the drive unit 11 includes an electric motor 111 and a reduction gearbox 112. The electric motor 111 is, for example, a stepper motor. The reduction gearbox 112 is connected to the output shaft of the electric motor 111. The electric motor 111 can control the raising and lowering of the bracket 13 by forward and reverse rotation.

[0048] The gear and rack transmission assembly 12 includes a rack 121 and a gear. The rack 121 is connected to the bracket 13, the gear is connected to the drive component 11, and the rack 121 meshes with the gear.

[0049] The bracket 13 includes a drive bracket 131, a connecting bracket 132, and an elastic connector 133. The drive bracket 131 is connected to the rack 121, the connecting bracket 132 is used to fix the camera 19, and the drive bracket 131 and the connecting bracket 132 abut against each other and are connected by the elastic connector 133.

[0050] Please combine Figure 1 and Figure 2In this embodiment, the rack 121 is a soft rack, such as a nylon rack, and the gears include a first gear 122 and a second gear 123, which are, for example, plastic gears. The rack 121 is a closed ring, and the first gear 122 and the second gear 123 are respectively disposed at both ends of the rack 121 and mesh with the inner surface of the rack 121. The first gear 122 is connected to the reduction gearbox 112, and the second gear 123 is rotatably disposed on the housing 17. When the first gear 122 rotates under the drive of the drive member 11, the rack 121 moves in the corresponding direction under the drive of the first gear 122, and the second gear 123 rotates under the drive of the rack 121, thereby realizing the overall transmission of the gear and rack transmission assembly 12. In order to achieve the linkage between the rack 121 and the bracket 13, a portion of the drive bracket 131 and a portion of the rack 121 are fixed together by adhesive dispensing. When the rack 121 moves, it can drive the bracket 13 to move, thereby realizing the lifting and lowering of the bracket 13.

[0051] In this embodiment, the drive unit 11 is located on the side of the bracket 13 in the downward direction, and the rack 121 is arranged parallel to the bracket 13, thereby shortening the overall length of the camera lifting device. By reducing the thickness of the first gear 122 and the second gear 123, the lateral dimension of the camera lifting device can be reduced.

[0052] Please combine them together Figures 3 to 5 In this embodiment, the elastic connector 133 is a pre-compressed spring. The two ends of the elastic connector 133 are respectively connected to the drive bracket 131 and the connecting bracket 132 and are arranged along the lifting direction of the bracket 13. In this way, the elastic connector 133 can provide a holding force to keep the drive connector 131 and the connecting bracket 132 relatively fixed during the lifting process of the bracket 13. When the drive bracket 131 moves along the lifting direction under the drive of the rack 121, the driving force can be further transmitted to the connecting bracket 132 through the elastic connector 133, thereby driving the camera 19 to rise. The connecting bracket 132 includes a bracket body 1321 and a camera positioning bracket 1322. The camera positioning bracket 1322 engages with the camera 19 to fix the camera 19. One end of the elastic connector 133 is connected to the connecting bracket 132 through the connection with the camera positioning bracket 1322. The bracket body 1321 has limiting holes 1323 on both sides along the lifting direction of the driving bracket 131. The driving bracket 131 has a limiting block 1311. The limiting block 1311 is slidably disposed in the limiting hole 1323 and abuts against the lower side wall of the limiting hole 1323 under the action of the elastic connector 133. Thus, when the driving bracket 131 moves along the downward direction under the drive of the rack 121, the driving force can be further transmitted to the connecting bracket 132 through the limiting block 1311, thereby driving the camera 19 to descend.

[0053] Please combine Figure 5 , Figure 6 and Figure 7 By employing the aforementioned bracket 13 structure, if the camera 19 is forcibly pushed back by an external force after extending from the housing 17, the connecting bracket 132 connected to the camera 19 moves downward, thereby compressing the elastic connector 133. The camera 19 lifting device is in a buffered state. Because the elastic connector 133 can be compressed, the connecting bracket 132 can move downward while the drive bracket 131 remains stationary, preventing the drive component 11 from being forcibly reversed and damaged under external force. Simultaneously, when the connecting bracket 132 descends in the buffered state, the limiting block 1311 moves towards the upper sidewall of the limiting elongated hole 1323 within the limiting elongated hole 1323. When the limiting block 1311 abuts against the upper sidewall of the limiting elongated hole 1323, the connecting bracket 132 reaches its maximum descending distance. Figure 7 As shown, the housing 17 is provided with a limiting block 171, and the drive bracket 131 is provided with a limiting rib 1312. When the drive bracket 131 rises under the drive of the drive member 11, the limiting rib 1312 moves toward the limiting block 171 until it abuts, thereby limiting the rising distance of the bracket 13.

[0054] Please combine Figure 1 , Figure 3 and Figure 8 In this embodiment, a magnet 15 is also provided on the connecting bracket 132. The magnet 15 is used to cooperate with a magnetic field sensor 16 to generate a magnetic induction signal to characterize the position of the connecting bracket 132. In actual implementation, the magnetic field sensor 16 is fixed on a circuit board inside the housing 17. When the connecting bracket 132 rises to its highest position, the magnetic induction signal generated between the magnet 15 and the magnetic field sensor 16 corresponds to the current position of the connecting bracket 132. Before the bracket 131 is driven to descend by the driving member 11, if the connecting bracket 132 is forcibly pushed back by an external force, the distance between the magnet 15 and the magnetic field sensor 16 decreases, causing a change in the magnetic induction signal. This, in turn, generates an electrical signal to control the electric motor 111 to reverse, retracting the bracket 13 to its lowest position. Furthermore, during the ascent of the bracket 13, the ascent process of the bracket 13 can be monitored based on the magnetic induction signal generated between the magnet 15 and the magnetic field sensor 16. If the change in the magnetic induction signal does not conform to the change pattern of the ascent process, an electrical signal can also be generated to control the driving member 11 to reverse, retracting the bracket 13 to its lowest position. In practice, to protect the electric motor 111, when the distance between the magnetic induction signal response magnet 15 and the magnetic field sensor 16 decreases, the electric motor 111 can be directly de-energized to stop the electric motor 111.

[0055] In this embodiment, when the camera lifting device is in operation, the electric motor 111 rotates forward according to the upward signal, and then drives the drive bracket 131 to rise through the gear and rack transmission assembly 12. Under the drive of the drive bracket 131, the elastic connector 133 provides a holding force to fix the drive bracket 131 and the connecting bracket 132 relatively, so that the connecting bracket 132 moves upward from the lowest position, the camera 19 rises, the electric motor 111 stops after driving a set distance, the connecting bracket 132 rises to the highest position, the limiting rib 1312 abuts against the limiting block 171, and the camera 19 is in the extended state. When the electric motor 111 reverses according to the downward signal, it drives the drive bracket 131 to fall through the gear and rack transmission assembly 12. The driving force is transmitted to the connecting bracket 132 through the limiting block 1311 on the drive bracket 131, thereby driving the camera 19 to fall. The electric motor 111 stops after driving a set distance, the connecting bracket 132 falls to the lowest position, the limiting rib 1312 abuts against the limiting block 171, and the camera 19 is in the retracted state.

[0056] As described above, the camera lifting device of this application includes a bracket, a drive component, and a gear and rack transmission assembly. The bracket is used to fix the camera, the drive component provides power to drive the bracket to lift and lower, and the gear and rack transmission assembly connects the drive component and the bracket. This application uses a gear and rack transmission assembly for transmission, which is a non-helical gear engagement, constant force direction-changing transmission, resulting in stable transmission, fast lifting speed, and high lifting efficiency. Furthermore, all structural components are simple in form, facilitating mass production and assembly, reducing the number of components, and allowing some components to be made of plastic, thus lowering costs.

[0057] Figure 9 This is a schematic diagram of the overall structure of a camera lifting device according to another embodiment. Figure 10 yes Figure 9 Another overall structural diagram of the camera lifting device in the image. (See diagram below.) Figure 9 and Figure 10 As shown, the camera lifting device in this embodiment includes a bracket 23, a drive component 21, and a gear and rack transmission assembly 22. The bracket 23 is used to fix the camera 29, the drive component 21 is used to provide power for the bracket 231 to lift and lower, and the gear and rack transmission assembly 22 connects the drive component 21 and the bracket 23.

[0058] The drive unit 21 is used to provide power for the lifting and lowering of the drive bracket 231. In this embodiment, the drive unit 21 includes an electric motor 211 and a reduction gearbox 212. The electric motor 211 is, for example, a stepper motor. The reduction gearbox 212 is connected to the output shaft of the electric motor 211. The electric motor 211 can control the raising and lowering of the bracket 23 by forward and reverse rotation.

[0059] The gear and rack transmission assembly 22 includes a rack 221 and a gear 222. The rack 221 is connected to the bracket 23, and the gear 222 is connected to the drive component 21. The rack 221 and the gear 222 mesh.

[0060] The bracket 23 includes a drive bracket 231, a connecting bracket 232 and an elastic connector 233. The drive bracket 231 is connected to the rack 221. The connecting bracket 232 is used to fix the camera 29. The drive bracket 231 and the connecting bracket 232 abut against each other and are connected by the elastic connector 233.

[0061] In this embodiment, the rack 221 is a hardened rack, for example, made of medium carbon steel or chromium-molybdenum alloy steel. The rack 221 is strip-shaped and arranged along the lifting direction of the bracket 23. The rack 221 is located between the gear 222 and the housing 27. The gear 222 meshes with the upper surface of the rack 221. The gear 222 is connected to the reduction gearbox 212. When the gear 222 rotates under the drive of the drive member 21, the rack 221 moves in the corresponding direction under the drive of the gear 222, thereby realizing the overall transmission of the gear and rack transmission assembly 22. To achieve the linkage between the rack 221 and the bracket 23, the drive bracket 231 is fixedly connected to the rack 221. In this embodiment, the drive bracket 231 is integrally formed from the upper end of the rack 221.

[0062] In this embodiment, there are two elastic connectors 233, both of which are pre-compressed springs. The two ends of the elastic connectors 233 are connected to the drive bracket 231 and the connecting bracket 232 respectively and are arranged along the lifting direction of the bracket 23. In this way, the elastic connectors 233 can provide a holding force to keep the drive bracket 231 and the connecting bracket 232 relatively fixed during the lifting process of the bracket 23. When the drive bracket 231 moves along the lifting direction under the drive of the rack 221, the driving force can be further transmitted to the connecting bracket 232 through the elastic connectors 233, thereby driving the camera 29 to rise.

[0063] Please combine them together Figure 11 and Figure 12In this embodiment, the connecting bracket 232 includes a bracket body 2321, a limiting plate 2322 and a camera positioning bracket 2323. The camera positioning bracket 2323 engages with the camera 29 to fix the camera 29. Through holes for limiting the elastic connector 233 are defined between the two sides of the camera positioning bracket 2323 and the bracket body 2321. One end of the elastic connector 233 passes through the through hole and abuts against the upper side of the bracket body 2321. The bracket body 2321 has a limiting plate 2322 on the side near the drive bracket 231, perpendicular to the lifting direction of the drive bracket 231. The limiting plate 2322 is connected to the bracket body 2321 via a limiting buckle 2325. The limiting plate 2322 has a clearance hole for the rack 221 to pass through. After passing through the clearance hole, the rack 221 connects to the elastic connector 233. In this embodiment, the upper end of the rack 221 is the drive bracket 231. Under the action of the elastic connector 233, the drive bracket 231 abuts against the surface of the limiting plate 2322 facing the elastic connector 233. Thus, when the rack 221 moves in the downward direction, the driving force can be further transmitted to the connecting bracket 232 through the limiting plate 2322, thereby driving the camera 29 to descend. Since there are two elastic connectors 233 and they are located on both sides of the camera 29, the lifting process is smoother and saves more space. In addition, the rack 221 extends under the connecting bracket 232 when it rises, which can reduce the length of the camera lifting device and increase the width of the rack 221, thereby improving the stability of the transmission.

[0064] Please combine them together Figure 13 and Figure 14 By using the bracket 23 with the above structure, if the camera 29 is forced back by an external force after extending out of the housing 27, the connecting bracket 232 connected to the camera 29 will move downward, thereby compressing the elastic connector 233. The camera lifting device is in a buffer state. Since the elastic connector 233 can be compressed, the connecting bracket 232 can move downward while the drive bracket 231 remains stationary, thus preventing the electric motor 211 from being forcibly reversed and damaged under the action of external force.

[0065] like Figure 1 , Figure 2 and Figure 13As shown, the camera lifting device in this embodiment also includes a limiting groove 223 and a limiting slider 225. The limiting groove 223 is arranged along the lifting direction of the bracket 23, and the limiting slider 225 is connected to the rack 221. In this embodiment, the limiting slider 225 is a rivet, and the limiting groove 223 is formed on the housing 27. The limiting slider 225 and the limiting groove 223 are slidably connected, thereby fixing the rack 221 to the housing 27 in the thickness direction and limiting the movement direction of the rack 221, preventing the rack 221 from shaking vertically up and down vertically during movement. The rack 221 is located below the circuit board 28 in the thickness direction of the housing 27, and can extend under the circuit board 28 during the lifting process without causing movement interference. At the same time, it can increase the board area of ​​the circuit board 28 and reduce the length of the camera lifting device.

[0066] like Figure 15 As shown, the housing 27 is provided with a limiting block 272 and a guide rib 271, and the connecting bracket 232 is provided with a limiting rib 2326. The limiting rib 2326 cooperates with the limiting block 272 and the guide rib 271 respectively, so that the movement distance of the connecting bracket 232 can be limited by the limiting block 272 and the movement direction of the connecting bracket 232 can be limited by the guide rib 271, ensuring that the connecting bracket 232 will not tilt.

[0067] Please combine Figure 9 and Figure 16 In this embodiment, the connecting bracket 232 is also equipped with a magnet 25, which is used to cooperate with a magnetic field sensor 26 to generate a magnetic induction signal to characterize the position of the connecting bracket 232. In actual implementation, the magnetic field sensor 26 is fixed on a circuit board inside the housing 27. When the connecting bracket 232 rises to its highest position, the magnetic induction signal generated between the magnet 25 and the magnetic field sensor 26 corresponds to the current position of the connecting bracket 232. Before the bracket 231 is driven to descend by the driving member 21, if the connecting bracket 232 is forcibly pushed back by an external force, the distance between the magnet 25 and the magnetic field sensor 26 decreases, causing a change in the magnetic induction signal. This, in turn, generates an electrical signal to control the electric motor 211 to reverse, retracting the bracket 23 to its lowest position. Furthermore, during the ascent of the bracket 23, the ascent process of the bracket 23 can be monitored based on the magnetic induction signal generated between the magnet 25 and the magnetic field sensor 26. If the change in the magnetic induction signal does not conform to the change pattern of the ascent process, an electrical signal can also be generated to control the driving member 21 to reverse, retracting the bracket 23 to its lowest position. In practice, to protect the electric motor 211, when the distance between the magnetic induction signal response magnet 25 and the magnetic field sensor 26 decreases, the electric motor 211 can be directly de-energized to stop the electric motor 211.

[0068] In this embodiment, when the camera lifting device is in operation, the electric motor 211 rotates forward according to the upward signal, and then drives the drive bracket 231 to rise through the gear and rack transmission assembly 22. Under the drive of the drive bracket 231, the elastic connector 233 provides a holding force to keep the drive bracket 231 and the connecting bracket 232 relatively fixed, so that the connecting bracket 232 moves upward from the lowest position, the camera 29 rises, the electric motor 211 stops after driving a set distance, the bracket 23 rises to the highest position, the limiting rib abuts against the limiting block 272, and the camera 29 is in the extended state. When the electric motor 211 reverses according to the downward signal, it drives the drive bracket 231 to fall through the gear and rack transmission assembly 22. The driving force is transmitted to the connecting bracket 232 through the limiting plate 2322 on the drive bracket 231, thereby driving the camera 29 to fall. The electric motor 211 stops after driving a set distance, the bracket 23 falls to the lowest position, and the camera 29 is in the retracted state.

[0069] As described above, the camera lifting device of this application includes a bracket, a drive component, and a gear and rack transmission assembly. The bracket is used to fix the camera, the drive component provides power to drive the bracket to lift and lower, and the gear and rack transmission assembly connects the drive component and the bracket. This application uses a gear and rack transmission assembly for transmission, which is a non-helical gear engagement, constant force direction-changing transmission, resulting in stable transmission, fast lifting speed, and high lifting efficiency. Furthermore, all structural components are simple in form, facilitating mass production and assembly, reducing the number of components, and allowing some components to be made of plastic, thus lowering costs.

[0070] Please refer to Figures 17 to 19 This application also provides a mobile terminal, including a housing 31, a camera 32, and a camera lifting device as described above.

[0071] In this embodiment, the housing 31 includes a front shell, on which a touch screen glass 311 is fixed, and the camera 32 is a front-facing camera. The housing 31 is used to house mobile terminal components, including components fixed inside the housing 31 and components located inside the housing 31 in a specific state.

[0072] like Figure 17 As shown, the camera lifting device is installed inside the housing 31, and the camera 32 is housed in the first position inside the housing 31, as shown. Figure 18 As shown, the camera 32 can also be driven by the camera lifting device to move from the first position to the second position to protrude from the housing 31. In the second position, the camera 32 can take pictures. When the camera 32 is driven by the camera lifting device to move from the second position to the first position, the camera 32 is completely housed inside the housing 31.

[0073] In addition, if Figure 19As shown, when the camera 32 extends out of the housing 31, it can retract and be in a buffer state if subjected to external force. At this time, the driving component of the camera lifting device does not work, and the structure is protected by the elastic connecting component in the camera lifting device.

[0074] The mobile terminal of this application includes a housing, a camera lifting device as described above, and a camera. The camera lifting device is disposed within the housing, and the camera is housed in a first position within the housing and can be driven by the camera lifting device to move from the first position to a second position to protrude from the housing. This application utilizes the camera lifting device to achieve the extension and retraction of the camera, thereby enabling a full-screen design, and the camera lifting efficiency is high.

[0075] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A camera lifting device, characterized in that: include: Bracket, used to fix the camera; A driving member, used for providing power to drive the bracket to move up and down; A rack and pinion transmission assembly, connecting the driving member and the bracket; The rack and pinion transmission assembly comprises a rack and a gear, the rack is connected to the bracket, the gear is connected to the driving member, and the rack is meshed with the gear; The rack is a soft rack, the gear includes a first gear and a second gear, the rack is a closed ring, the first gear and the second gear are respectively arranged at both ends of the rack and mesh with the inner surface of the rack, the first gear is connected to the driving member, and the second gear is rotatably arranged.

2. The camera lifting device according to claim 1, characterized in that: The bracket includes a driving bracket, a connecting bracket and an elastic connecting piece, the two ends of the elastic connecting piece are respectively connected to the driving bracket and the connecting bracket and are arranged along the lifting direction of the bracket, the driving bracket is connected to the rack, the connecting bracket is used to fix the camera, and both sides of the connecting bracket are provided with limiting long holes along the lifting direction of the driving bracket, the driving bracket is provided with a limiting block, the limiting block can be slidably arranged in the limiting long hole, and under the action of the elastic connecting piece, it abuts against the lower end side wall of the limiting long hole.

3. The camera lifting device according to claim 1, characterized in that: The bracket includes a driving bracket, a connecting bracket and an elastic connecting piece. The driving bracket is connected to the rack. The connecting bracket is used to fix the camera. The driving bracket is against the connecting bracket and is connected through the elastic connecting piece.

4. The camera lifting device according to claim 1 or 3, characterized in that: The connecting bracket is provided with a magnet, and the magnet is used to cooperate with a magnetic field sensor to generate a magnetic induction signal for characterizing the position of the connecting bracket.

5. A camera lifting device, characterized in that: include: The bracket comprises a driving bracket, a connecting bracket and an elastic connecting piece, wherein the connecting bracket is used to fix the camera, and the driving bracket abuts against the connecting bracket and is connected through the elastic connecting piece; A driving member, used for providing power to drive the bracket to move up and down; a rack and pinion transmission assembly, connecting the driving member and a driving bracket of the bracket; The rack and pinion transmission assembly comprises a rack and a gear, the rack is connected to the driving bracket, the gear is connected to the driving member, and the rack is meshed with the gear; The rack is a hard rack in a bar shape, the gear is meshed with the upper surface of the rack, the connecting bracket is provided with a limit plate perpendicular to the lifting direction of the driving bracket on the side close to the driving bracket, and the driving bracket rests on the limit plate under the action of the elastic connecting member.

6. The camera lifting device according to claim 5, characterized in that: The connecting bracket is provided with a magnet, and the magnet is used to cooperate with a magnetic field sensor to generate a magnetic induction signal for characterizing the position of the connecting bracket.

7. A mobile terminal, characterized in that: include: case; The camera lifting device according to any one of claims 1 to 4, or the camera lifting device according to any one of claims 5 to 6, wherein the camera lifting device is arranged in the housing; The camera is accommodated in a first position in the shell and can be driven by the camera lifting device to move from the first position to a second position to protrude out of the shell.

Images