Optical driver and mobile terminal having same

Abstract

The utility model relates to an optical driver and a mobile terminal with the same. The optical driver comprises a base, a carrier, a driving mechanism and a guide mechanism, the carrier is arranged on the base and is in rolling or sliding connection with the base; the driving mechanism is connected with the carrier and the base and used for driving the carrier to move in the preset direction. The guide mechanism is arranged on the base and located between the carrier and the base, and the carrier is in rolling connection with the base through the guide mechanism; the guide mechanism comprises a guide shaft group and a ball; the guide shaft set is arranged on at least one of the side, facing the carrier, of the base or the side, facing the base, of the carrier. The balls are matched with the guide shaft sets and located in the guide shaft sets. The combination of the guide shaft set and the steel balls is adopted to replace a traditional elastic piece supporting structure, the steel balls roll in the guide shaft set to guide the carrier to move, the guide shaft set provides rigid guidance for movement of the carrier, the carrier can still keep a relatively stable movement track even in a vibration environment, and shaking of the optical element is avoided.

Description

Technical Field

[0001] This application relates to the field of optical instrument technology, and more particularly to an optical driver and a mobile terminal having the same. Background Technology

[0002] Existing optical focusing drivers use a spring support structure. This spring support structure mainly relies on springs made of metal or elastic materials with a certain degree of elasticity. When the spring support structure is subjected to external force, it will deform, thereby driving the carrier in the optical driver to move to achieve the purpose of focusing. When the driver is subjected to external vibration interference, the spring will undergo irregular elastic deformation due to vibration, which will cause the optical elements on the carrier to shake, affecting the imaging effect. Summary of the Invention

[0003] In view of this, this application proposes an optical driver, including: a base, a carrier, a driving mechanism, and a guiding mechanism;

[0004] The carrier is mounted on the base, and the carrier is connected to the base by rolling or sliding.

[0005] The drive mechanism is connected to the carrier and the base respectively, and the drive mechanism is used to drive the carrier to move in a preset direction;

[0006] The guide mechanism is mounted on the base and located between the carrier and the base. The carrier is rotatably connected to the base through the guide mechanism.

[0007] The guiding mechanism includes: a guide shaft assembly and ball bearings;

[0008] The guide shaft assembly is located at least one on the side of the base facing the carrier, or on the side of the carrier facing the base;

[0009] The ball bearings are matched with the guide shaft assembly, and the ball bearings are located inside the guide shaft assembly.

[0010] In one possible implementation, the guide shaft assembly includes: two guide rods; the main body of each guide rod is columnar, the axes of the two guide rods are parallel to each other and oriented towards the direction of movement of the carrier, and the balls abut against the two guide rods respectively.

[0011] In one possible implementation, a limiting groove is provided on the base; the limiting groove has a U-shaped structure, and the ball bearing is located within the limiting groove.

[0012] In one possible implementation, there are two or more balls; the two or more balls are arranged along the length of the limiting groove.

[0013] In one possible implementation, there are two guide mechanisms; the two guide mechanisms are located on opposite sides of the drive mechanism.

[0014] In one possible implementation, the driving device includes a magnet and a coil; the magnet is disposed on the side of the carrier facing the base, and the coil is disposed on the side of the base facing the carrier; the magnet and the coil are disposed opposite each other.

[0015] In one possible implementation, the drive device also includes a magnetic element; the magnetic element is mounted on the base and located on the side of the coil away from the magnet.

[0016] In one possible implementation, a housing is also included; the housing is snapped into the base.

[0017] According to another aspect of this application, a mobile terminal is provided, including any of the optical drivers described above.

[0018] Beneficial effects of this application

[0019] This application replaces the traditional spring support structure with a combination of a guide shaft assembly and steel balls. The steel balls roll within the guide shaft assembly to guide the movement of the carrier. The guide shaft assembly has high hardness and rigidity, thus preventing displacement due to external vibration. The guide shaft assembly provides rigid guidance for the carrier's movement. When the carrier moves under the action of the drive mechanism, the guide shaft can precisely limit the carrier's movement direction. Even in a vibrating environment, the carrier can maintain a relatively stable movement trajectory, avoiding vibration of optical elements due to external vibration, ensuring the stability and clarity of imaging, and thus providing users with higher quality images. At the same time, the steel balls replace the sliding friction between the carrier and the guide shaft assembly with rolling friction, reducing friction between the carrier and the guide shaft assembly, reducing energy loss and component wear caused by friction, extending the service life of the balls and the guide shaft assembly, and making the carrier move more smoothly.

[0020] Other features and aspects of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.

[0022] Figure 1 An exploded view of the optical driver according to an embodiment of this application is shown;

[0023] Figure 2 Show Figure 1 A magnified view of a portion of the image;

[0024] Figure 3 This diagram illustrates the main structure of the guiding mechanism according to an embodiment of this application.

[0025] Figure 4A structural diagram of the main structure of a guide mechanism according to another embodiment of this application is shown.

[0026] Base—110; Limiting groove—111; Carrier—120; Outer shell—130; Magnet—210; Coil—220; Magnetic component—230; Guide shaft assembly—310; Guide rod—311; Ball bearing—320. Detailed Implementation

[0027] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0028] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0031] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0032] This application proposes an optical actuator, such as Figures 1 to 4As shown, the system includes a base 110, a carrier 120, a drive mechanism, and a guide mechanism. The carrier 120 is disposed on the base 110 and is rotatably or slidably connected to the base 110. The drive mechanism is connected to both the carrier 120 and the base 110, and is used to drive the carrier 120 to move in a preset direction. The guide mechanism is disposed on the base 110 and located between the carrier 120 and the base 110, and the carrier 120 is rotatably connected to the base 110 through the guide mechanism. The guide mechanism includes a guide shaft assembly 310 and ball bearings 320. The guide shaft assembly 310 is disposed on at least one side of the base 110 facing the carrier 120, or on at least one side of the carrier 120 facing the base 110. The ball bearings 320 are matched with the guide shaft assembly 310 and are located inside the guide shaft assembly 310.

[0033] It should be noted that the base 110 provides a mounting and support platform for the carrier 120, the drive mechanism, and the guide mechanism. The carrier 120 is used to mount and fix optical elements. Through cooperation with the drive mechanism and the guide mechanism, the carrier 120 moves along a preset direction, thereby achieving focusing of the optical elements. The drive mechanism provides power to the carrier 120, enabling it to move in a preset direction and at a preset speed. The guide mechanism guides the carrier 120 to move along a preset direction and constrains its trajectory, preventing misalignment during movement. To prevent deviation or wobbling, the guide shaft assembly 310 provides a motion track for the ball bearing 320, allowing the carrier 120 to move along the length of the guide shaft assembly 310 during movement, thus ensuring the accuracy of the carrier 120's movement. The ball bearing 320 converts the sliding friction between the carrier 120 and the base 110 into rolling friction, thereby reducing the friction between the carrier 120 and the base 110, which in turn reduces energy loss and component wear caused by friction, and extends the service life of the ball bearing 320 and the guide shaft assembly 310.

[0034] When the optical driver needs to focus the optical element, the drive mechanism drives the carrier 120 to move in a preset direction. Since the guide shaft assembly 310 of the guide mechanism limits the movement direction of the carrier 120, and the ball bearing 320 rolls in the guide shaft assembly 310 to reduce the friction between the guide shaft assembly 310 and the carrier 120, the carrier 120 will move along the preset direction determined by the guide shaft assembly 310, thereby driving the optical element carried on the carrier 120 to move accordingly, thus realizing the focusing operation of the optical element.

[0035] This application uses a combination of guide shaft assembly 310 and steel balls to replace the traditional spring support structure. The steel balls roll within the guide shaft assembly 310 to guide the movement of the carrier 120. The guide shaft assembly 310 has high hardness and rigidity, thus preventing displacement due to external vibration. The guide shaft assembly 310 provides rigid guidance for the movement of the carrier 120. When the carrier 120 moves under the action of the drive mechanism, the guide shaft can precisely limit the movement direction of the carrier 120. Even in a vibration environment, the carrier 120 can still maintain a relatively stable movement trajectory, avoiding vibration of optical elements due to external vibration, ensuring the stability and clarity of imaging, and thus providing users with higher quality images. At the same time, the steel balls replace the sliding friction between the carrier 120 and the guide shaft assembly 310 with rolling friction, reducing the friction between the carrier 120 and the guide shaft assembly 310, reducing energy loss and component wear caused by friction, extending the service life of the ball 320 and the guide shaft assembly 310, and making the carrier 120 move more smoothly.

[0036] In one possible implementation, the guide shaft assembly 310 includes two guide rods 311. The main bodies of both guide rods 311 are columnar, and their axes are parallel to each other and oriented towards the direction of movement of the carrier 120. Ball bearings 320 abut against each of the two guide rods 311. It should be noted that the columnar guide rods 311 have high rigidity and load-bearing capacity, capable of withstanding the forces generated during the movement of the carrier 120, ensuring stable displacement of the carrier 120. The two parallel guide rods 311 form a guide groove, and the ball bearings 320 are located inside the guide groove and abut against each of the two guide rods 311, allowing the ball bearings 320 to roll axially along the guide rods 311, thereby guiding the displacement of the carrier 120.

[0037] In one possible implementation, two guide mechanisms are provided; the two guide mechanisms are located on opposite sides of the drive mechanism. It should be noted that both guide mechanisms and the drive mechanism are located on the same side of the carrier 120, and the two guide mechanisms are located at opposite ends of the drive mechanism; one of the guide mechanisms is as follows: Figure 3 As shown, the guiding mechanism consists of two guide rods 311 forming a guide groove, which is disposed on the base 110. Ball bearings 320 abut against the guide groove and the outer wall of the carrier 120, respectively. Another guiding mechanism is as follows... Figure 4 As shown, the guiding mechanism consists of four guide rods 311 forming two guide grooves, which are respectively located between the base 110 and the carrier 120, and the ball bearings 320 abut against the two guide grooves respectively.

[0038] In one possible implementation, a limiting groove 111 is formed on the base 110; the limiting groove 111 has a U-shaped structure, and the ball bearing 320 is disposed within the limiting groove 111. It should be noted that the U-shaped limiting groove 111 is suitable for restricting the lateral and longitudinal movement of the ball bearing 320, preventing the ball bearing 320 from falling off during movement, and ensuring that the ball bearing 320 is always in the correct position between the guide shaft assembly 310 and the carrier 120, thereby stably supporting and guiding the movement of the carrier 120; the limiting groove 111 has a simple design, is easy to process and manufacture, and can effectively simplify the structure of the entire guiding mechanism.

[0039] In one possible implementation, there are two or more ball bearings 320; the two or more ball bearings 320 are arranged along the length of the limiting groove 111. It should be noted that the ball bearings 320 are used to guide the carrier 120. Multiple ball bearings 320 can evenly distribute the force generated during the movement of the carrier 120, avoid excessive pressure on a single ball bearing 320, and reduce the possibility of the carrier 120 shaking or deviating during movement. Each pair of adjacent ball bearings 320 is tangentially arranged. The tangential arrangement of the ball bearings 320 can reduce the vibration of the carrier 120 caused by the gap between the ball bearings 320 during movement, ensuring that the carrier 120 moves smoothly along the preset direction.

[0040] In one possible implementation, the driving device includes a magnet 210 and a coil 220; the coil 220 is disposed on the side of the carrier 120 facing the base 110, and the base 110 is disposed on the side of the carrier 120 facing the carrier 120; the magnet 210 and the coil 220 are disposed opposite each other; when the coil 220 is energized, it generates a magnetic field, and the coil 220 interacts with the oppositely disposed magnet 210. Since the magnet 210 and the coil 220 are respectively fixed on the carrier 120 and the base 110, this interaction force will cause relative movement between the carrier 120 and the base 110, thereby providing a driving force for the carrier 120 in the direction of the guide shaft assembly 310, so that the carrier 120 can move as expected.

[0041] Furthermore, magnet 210 is a bipolar magnetized magnet 210 or a Heilbeck assembled magnet 210.

[0042] In one possible implementation, the drive device further includes a magnetic component 230; the magnetic component 230 is mounted on the base 110 and located on the side of the coil 220 away from the magnet 210; the magnetic component 230 and the magnet 210 generate a stable attraction through magnetic attraction, which ensures that the carrier 120 with the magnet 210 fixed thereon and the base 110 are in close contact with the ball bearing 320 of the guide mechanism. During the movement, the magnetic component 230 further constrains the movement trajectory of the carrier 120, causing the carrier 120 to move in a preset direction, avoiding shaking or deviation of the carrier 120 due to external forces during the movement, and improving the guiding accuracy.

[0043] In one possible implementation, a housing 130 is also included; the housing 130 is interlocked with the base 110; the interlocking design of the housing 130 and the base 110 provides a stable mounting frame for the internal mechanisms, ensuring that each mechanism remains in the correct position during device operation. At the same time, the housing 130 can enclose the drive mechanism, the carrier 120 and the guide mechanism inside, forming a relatively enclosed space, preventing these components from being damaged by external environmental factors, thereby improving the stability and reliability of the entire device.

[0044] According to another aspect of this application, a mobile terminal is provided, including any of the optical drivers described above.

[0045] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An optical drive, characterized by, include: Base, carrier, drive mechanism, and guide mechanism; The carrier is disposed on the base, and the carrier is rotatably or slidably connected to the base; The driving mechanism is connected to the carrier and the base respectively, and the driving mechanism is used to drive the carrier to move in a preset direction; The guide mechanism is disposed on the base and located between the carrier and the base, and the carrier is rotatably connected to the base through the guide mechanism; The guiding mechanism includes: a guide shaft assembly and ball bearings; The guide shaft assembly is disposed at least at one location on the side of the base facing the carrier, or on the side of the carrier facing the base; The ball bearings are matched with the guide shaft assembly, and the ball bearings are located inside the guide shaft assembly.

2. The optical drive of claim 1, wherein, The guide shaft assembly includes: two guide rods; Both guide rods have a columnar structure, their axes are parallel to each other and oriented toward the direction of movement of the carrier, and the balls abut against the two guide rods respectively.

3. The optical drive of claim 2, wherein, A limiting groove is provided on the base; The limiting groove has a U-shaped structure, and the ball bearing is located inside the limiting groove.

4. The optical drive of claim 3, wherein, The ball bearings are provided in two or more; Two or more of the balls are arranged along the length of the limiting groove.

5. The optical drive of claim 1, wherein, The guiding mechanism has two parts; The two guide mechanisms are located on opposite sides of the drive mechanism.

6. The optical drive of claim 1, wherein, The driving mechanism includes: a magnet and a coil; The coil is disposed on the side of the carrier facing the base, and the coil is disposed on the side of the base facing the carrier; The magnet is positioned opposite to the coil.

7. The optical drive of claim 6, wherein, The driving mechanism also includes magnetic components; The magnetic component is mounted on the base and is located on the side of the coil away from the magnet.

8. The optical drive of claim 1, wherein, It also includes the outer casing; The outer shell is snapped into the base.

9. A mobile terminal, characterized by Includes the optical driver as described in any one of claims 1 to 8.

Images