A transmission structure for optical lenses

Abstract

This utility model belongs to the field of optical equipment technology, specifically relating to a transmission structure for an optical lens. The transmission structure includes a horizontally arranged drive motor, a transmission gear mounted on the output shaft of the drive motor, an end-face gear meshing with the transmission gear, a driven wheel, a transmission belt connecting the end-face gear shaft and the driven wheel, and a lens barrel connected to the driven wheel. The end-face gear converts the direction of power, transforming the horizontal rotational motion of the drive motor into linear motion of the lens barrel along its optical axis. By arranging the drive motor horizontally, this utility model effectively reduces the overall height of the transmission structure in the vertical direction, improving the utilization of internal space and making it suitable for thin and light optical equipment with strict thickness requirements.

Description

Technical Field

[0001] This utility model belongs to the field of optical equipment technology, specifically relating to a transmission structure for optical lenses, which can be applied to camera modules of devices such as mobile phones, tablets, drones, and optical lenses. Background Technology

[0002] With the widespread adoption of remote work and online meetings, optical lenses are evolving towards miniaturization and refinement. The lens drive system is one of the core components of an optical lens, and its structural layout directly affects the overall thickness and appearance of the lens.

[0003] Traditional vertical drive structures for optical lenses typically employ a vertically positioned motor. For example... Figure 1 As shown, both the drive motor and the driven wheel are arranged vertically, and the motor directly drives the lens barrel through a single-stage transmission. The disadvantage of this structure is that the motor itself has a certain height. When it is placed vertically, the total height of the motor (e.g., 36mm) will exceed the main structure of the body, forcing the product shell to be locally thickened or enlarged overall, thus increasing the thickness and volume of the whole machine and affecting the product's appearance and refinement.

[0004] Therefore, there is a need in the existing technology for a more compact and space-saving transmission structure. Utility Model Content

[0005] To address the problems mentioned in the background art, this utility model provides a transmission structure for optical lenses. By placing the drive motor horizontally and employing multi-stage transmission, the structural height is effectively reduced, saving internal space and making the product appearance thinner, more harmonious, and more refined.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a transmission structure for an optical lens, comprising: Mounting substrate; The drive motor has its output shaft axis direction set perpendicular to the optical axis direction of the lens barrel; A transmission gear is mounted on the output shaft of the drive motor; The end face gear meshes with the transmission gear; The driven wheel has its axis of rotation parallel to the optical axis of the lens barrel; A transmission belt connects the shaft of the end face gear and the driven pulley; The lens barrel is connected to the driven wheel via a threaded drive, so that the rotational motion of the driven wheel is converted into linear motion of the lens barrel along its optical axis.

[0007] Preferably, the gear structure of the end face gear is distributed on its end face.

[0008] Preferably, the total height of the drive motor after it is set horizontally is less than 25mm.

[0009] Preferably, the driven wheel is a belt pulley.

[0010] Preferably, the transmission belt is a synchronous belt or a steel wire belt.

[0011] Preferably, it also includes a waist-shaped hole, which is disposed on the mounting base plate of the transmission structure and is used to finely adjust the mounting position of the drive motor and / or the end face gear to achieve alignment between the optical axis of the lens barrel and the optical center of the target.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. Space Saving: By changing the drive motor, which originally required vertical placement, to horizontal placement and using end-face gears to change the transmission direction, the motor, which originally occupied a large vertical height, is arranged "flat," significantly reducing the overall height of the transmission structure in the vertical direction (for example, from approximately 36mm in the traditional solution to approximately 22mm). This allows the product base to be less thick, the outer shell to be made flatter and lower, and the overall appearance of the machine to be more harmonious and refined.

[0013] 2. Layout optimization: The first-stage transmission structure is cleverly designed. The horizontally placed motor can make more flexible use of the idle space around the main board inside the equipment, making the internal structure layout more reasonable and compact.

[0014] 3. Improved appearance: Due to the reduction in the overall height of the module, the final product can be made to look flatter, more harmonious and refined, thus improving the product's aesthetics. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the transmission structure in which the drive motor is placed horizontally in an embodiment of this utility model; Figure 2 This is a cross-sectional view of the overall height of the drive motor of this utility model; Figure 3 This is a schematic diagram of a transmission structure in traditional technology where the drive motor is placed vertically. Figure 4 This is a schematic diagram of the transmission gear structure of this utility model.

[0016] In the diagram: 1. Lens barrel; 2. Driven wheel; 3. Drive belt; 4. End face gear; 5. Transmission gear; 6. Drive motor. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 This utility model provides the following technical solution: a transmission structure for an optical lens, comprising: Mounting substrate; The drive motor 6 is horizontally positioned; that is, the axis of its output shaft is set to be perpendicular to the optical axis of the lens barrel 1. The transmission gear 5 is mounted on the output shaft of the drive motor 6 and is driven to rotate by the drive motor 6. The end face gear 4 faces downwards and meshes with the horizontally rotating transmission gear 5. The end face gear 4 is connected to the vertically mounted driven wheel 2 via a transmission belt (such as a synchronous belt), thereby transmitting the rotational motion of the drive motor 6 to the driven wheel 2, ultimately driving the lens barrel 1 to move along the optical axis. The driven wheel 2 is coupled to the lens barrel 1 via a thread or other transmission method.

[0019] A transmission belt connects the shaft of the end face gear 4 and the driven wheel 2; the driven wheel 2 is a pulley, and the transmission belt is a synchronous belt or a steel wire belt.

[0020] The lens barrel 1 is connected to the driven wheel 2 via a threaded drive, so that the rotational motion of the driven wheel 2 is converted into linear motion of the lens barrel 1 along its optical axis.

[0021] The gear structure of the end face gear 4 is distributed on its end face, enabling it to mesh with a gear perpendicular to the axial direction, thereby changing the direction of power transmission.

[0022] It also includes a waist-shaped hole, which is set on the mounting base plate of the transmission structure and is used to finely adjust the mounting position of the drive motor 6 and / or the end face gear 4 to achieve alignment between the optical axis of the lens barrel 1 and the optical center of the target.

[0023] like Figure 3 As shown, a traditional solution is illustrated. In contrast, the drive motor 6 is placed vertically, directly or through a simple transmission to drive the driven wheel 2, resulting in a relatively large stacking height (H1) of the entire mechanism in the vertical direction. In this invention, because the drive motor 6 is placed horizontally, the total height (H2) of the mechanism is significantly reduced, meeting the application scenarios with strict requirements on equipment thickness.

[0024] In a preferred embodiment of this invention, a horizontally placed drive motor 6 meshes with an end-face gear 4, driving the end-face gear 4 to rotate. The output shaft of the horizontally placed drive motor 6 meshes with the other side of the end-face gear 4 via a gear, thereby transmitting power to the end-face gear 4. The end-face gear 4 is connected to a vertically placed driven wheel 2 via a belt, and the driven wheel 2 is fixedly connected to the lens barrel 1. When the drive motor 6 rotates, power is transmitted to the driven wheel 2 via the end-face gear 4 and the belt, ultimately driving the lens barrel 1 to achieve precise vertical movement along its optical axis (vertical direction), realizing zoom or focus functions.

[0025] By placing the drive motor 6 horizontally, its overall height can be controlled. The total height of the drive motor 6 in a horizontal position is less than 25mm, for example, it can be reduced to a value of 22, far lower than the height when placed vertically (for example, a value of 36). This eliminates the need for additional height in the optical lens housing to accommodate the motor, allowing for a thinner and lighter design, resulting in a more harmonious and refined overall appearance. Furthermore, as... Figure 2 As shown, a rotating waist-shaped hole is also provided in the structure for fine-tuning the horizontal position of the lens to ensure that the optical center is aligned with the center of the structure.

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A transmission structure for an optical lens, characterized in that, include: Mounting substrate; The drive motor has its output shaft axis direction set perpendicular to the optical axis direction of the lens barrel; A transmission gear is mounted on the output shaft of the drive motor; The end face gear meshes with the transmission gear; The driven wheel has its axis of rotation parallel to the optical axis of the lens barrel; A transmission belt connects the shaft of the end face gear and the driven pulley; The lens barrel is connected to the driven wheel via a threaded drive, so that the rotational motion of the driven wheel is converted into linear motion of the lens barrel along its optical axis.

2. The transmission structure for an optical lens according to claim 1, characterized in that: The The gear structure of an end-face gear is distributed on its end face.

3. The transmission structure for an optical lens according to claim 1, characterized in that: The total height of the drive motor after it is set horizontally is less than 25mm.

4. The transmission structure for an optical lens according to claim 1, characterized in that: The driven wheel is a belt pulley.

5. The transmission structure for an optical lens according to claim 4, characterized in that: The transmission belt is a synchronous belt or a steel wire belt.

6. The transmission structure for an optical lens according to claim 1, characterized in that: It also includes a waist-shaped hole, which is disposed on the mounting base plate of the transmission structure and is used to finely adjust the mounting position of the drive motor and / or the end face gear to achieve alignment between the optical axis of the lens barrel and the optical center of the target.

Images