Lens rotating device

Abstract

The utility model relates to the technical field of lenses, and particularly discloses a lens rotating device, which comprises a shell and a bearing sleeved at one end of the shell. The bearing is further sleeved with a sliding sleeve groove, and the sliding sleeve groove can rotate around the shell through the bearing. A cam block is further arranged on the side body of the shell; a sliding groove with the width matched with that of the cam block is formed in the sliding sleeve groove, and the sliding groove is formed in a spiral rising shape. The sliding sleeve groove is further provided with an opening for containing the cam block, one side of the opening is communicated with the sliding sleeve groove, and the other side of the opening abuts against the cam block. When the sliding sleeve groove rotates based on the shell, the cam block moves along the path of the sliding groove, and the shell ascends or descends in the sliding sleeve groove. Therefore, the adjusting process of the device is more stable and smoother, and a user can adjust the lens more smoothly in the using process without encountering the clamping stagnation problem.

Description

Technical Field

[0001] This utility model relates to the field of lens technology, and in particular to a lens rotation device. Background Technology

[0002] Traditional lens adjustment mechanisms often rely on simple sliding or gear structures, which have limitations in precision and reliability. When the device is used for extended periods or subjected to external impacts, the fit between mechanical components may change. For example, the gap between sliding parts may increase or decrease, causing components to jam and affecting smooth adjustment. Furthermore, since lens adjustment mechanisms typically employ linear or circular sliding structures, improper assembly of components or material defects can easily increase resistance, even causing moving parts to jam. Jamming not only affects normal operation but can also damage components, increasing repair costs. For instance, jamming during adjustment may put excessive pressure on the cam block or slide, damaging these critical components and rendering the device malfunction. Friction is also a common problem in lens adjustment mechanisms, especially with prolonged use or high-frequency adjustments, where friction gradually increases. Traditional adjustment mechanisms use sliding friction, and the friction between sliding parts increases with use, leading to uneven adjustment and even "sticking." Traditional lens adjustment techniques typically reduce friction and prevent jamming by adding lubricant, using bearings, or adjusting the fit clearance. However, these methods cannot fundamentally solve the problem. Lubricating oil is prone to drying out or getting dirty under high temperature and long-term use, resulting in a decrease in adjustment accuracy. Relying solely on bearings or fit clearances may also lead to jamming problems due to material fatigue or improper assembly.

[0003] The patent "Lens Assembly, Lens and Image Acquisition Device" (authorization announcement number CN222365120U, hereinafter referred to as Prior Art 1) discloses a lens assembly in which a rolling module is provided between the second lens barrel and the first lens barrel, so that when the fourth lens barrel rotates, it can drive the connecting member to reciprocate in the optical axis direction, thereby driving the second lens barrel to move along the optical axis direction. At the same time, in order to reduce the friction between the second and the fixed lens barrel, a second rolling module can be provided between the third and fourth lens barrels.

[0004] However, during prolonged use, the rolling module of this lens assembly may wear down, leading to increased rolling resistance and affecting the accuracy and smoothness of the lens assembly's movement. Furthermore, the presence of the rolling module makes the lens assembly's structure relatively complex, increasing manufacturing and maintenance costs. Additionally, improper design or insufficient assembly precision of the rolling module can cause the lens assembly to wobble or shift during movement, affecting image quality. Utility Model Content

[0005] In view of this, the present invention provides a lens rotation device to solve the problem of jamming that easily occurs when adjusting the distance between lens groups or lenses in the prior art.

[0006] This utility model provides a lens rotation device, including a housing and a bearing sleeved on one end of the housing; a sliding groove is also sleeved on the bearing, and the sliding groove can rotate around the housing through the bearing; a cam block is also provided on the side of the housing; the sliding groove has a groove with a width adapted to the cam block inside, and the groove is arranged in a spiral upward shape; the sliding groove also has an opening for accommodating the cam block, one side of the opening is connected to the sliding groove, and the other side abuts the cam block; when the sliding groove rotates based on the housing, the cam block moves along the path of the groove, and the housing moves up or down in the sliding groove.

[0007] Preferably, when the cam block moves along the path of the slide groove, the housing moves along the optical axis.

[0008] Preferably, the housing is further provided with a support frame; the support frame is provided with a plurality of mounting grooves for setting sliding balls at uniform angular intervals.

[0009] Preferably, the sliding ball rotates based on a support shaft, which is fixed by fixing bolts disposed on both sides of the mounting groove.

[0010] Preferably, the sliding ball is positioned between the housing and the support frame, and the sliding ball is in contact with the housing; when the housing moves up or down in the sliding groove, the sliding ball increases the smoothness of the movement or increases the relative support force between the housing and the sliding groove.

[0011] Preferably, a first locking ring and a second locking ring are further provided at one end of the outer side of the housing; the first locking ring is used to restrict the position of the bearing;

[0012] Preferably, the second locking ring is used to limit the position of the sliding sleeve groove.

[0013] Preferably, one end of the slide groove is open and the other end is closed; when the housing rises, it abuts against the cam block through the open side; when the housing falls, it abuts against the cam block through the closed end of the slide groove.

[0014] Preferably, the support frame has a stepped mounting section for mounting lenses or lens assemblies.

[0015] Preferably, the cam block is equipped with a guide block via a support column, and the guide block is fixedly disposed within the support frame; when the housing moves based on the sliding sleeve groove, the support frame moves synchronously with the housing.

[0016] Preferably, a cam spring is also provided on the support column between the guide block and the cam block.

[0017] The lens rotation device provided by this utility model has the following beneficial effects:

[0018] This design utilizes a spiral-shaped sliding groove and cam block to achieve more precise control along the motion path. The cam block moves smoothly along the spiral groove, ensuring more accurate adjustment of the distance between the lens assembly and the lens element. This design reduces the decrease in accuracy caused by mechanical errors or excessive friction in traditional adjustment devices, thereby improving the stability and reliability of focusing. This technical solution optimizes the fit between the sliding groove and the cam block, making the movement of the lens adjustment device smoother. Compared to the direct linear or circular sliding in traditional designs, the spiral groove provides a more uniform force distribution, avoiding jamming caused by mechanical clearance mismatch or prolonged use. Therefore, the adjustment process is smoother and more fluid, allowing users to adjust the lens more smoothly without jamming. Excessive friction in traditional designs leads to accelerated wear and reduced lifespan. By introducing a design that ensures uniform force distribution, friction between sliding parts is reduced, significantly decreasing wear. This reduced friction not only makes lens adjustment easier but also extends the device's lifespan, reducing malfunctions caused by excessive friction or the need for frequent maintenance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and these are all within the protection scope of this utility model.

[0020] Figure 1 This is a three-dimensional structural diagram of a lens rotation device;

[0021] Figure 2 This is a schematic diagram of the exploded structure of a lens rotation device;

[0022] Figure 3 This is a schematic diagram of the exploded structure of a lens rotation device from another angle;

[0023] Figure 4 This is a cross-sectional structural diagram of a lens rotation device;

[0024] Parts and component numbers in the diagram:

[0025] 100-Housing, 110-Bearing, 121-Cam block, 122-Guide block, 123-Cam spring, 124-Support column, 131-First locking ring, 132-Second locking ring;

[0026] 200 - Sliding groove, 210 - Sliding groove, 220 - Opening;

[0027] 300-Support bracket, 311-Sliding ball bearing, 312-Support shaft, 313-Fixing bolt, 320-Mounting slot, 330-Mounting part;

[0028] 400-lens set. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, in this document, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Unless otherwise specified, embodiments of the present invention and the various features thereof can be combined with each other, all within the protection scope of the present invention.

[0030] Example 1

[0031] Please see Figure 1 and Figure 2This utility model provides a lens rotation device, including a housing 100 and a bearing 110 sleeved on one end of the housing 100; a sliding groove 200 is also sleeved on the bearing 110, and the sliding groove 200 can rotate around the housing 100 through the bearing 110; a cam block 121 is also provided on the side of the housing 100; the sliding groove 200 has a sliding channel 210 with a width adapted to the cam block 121 inside, and the sliding channel 210 is arranged in a spiral upward shape; the sliding groove 200 also has an opening 220 for accommodating the cam block 121, one side of the opening 220 is connected to the sliding groove 200, and the other side abuts the cam block 121; when the sliding groove 200 rotates based on the housing 100, the cam block 121 moves along the path of the sliding channel 210, and the housing 100 moves up or down in the sliding groove 200.

[0032] One end of the slide groove 210 is open 220, and the other end is closed. When the housing 100 rises, it abuts against the cam block 121 through one side of the opening 220. When the housing 100 falls, it abuts against the cam block 121 through the closed end of the slide groove 210.

[0033] Please see Figure 1 and Figure 2 When adjustments are needed between lens groups 400 or individual lenses, hold the bottom of the lens near the bearing 110 and rotate the sliding groove 200. This causes the cam block 121 to move within the sliding groove 210 through the contact between the opening 220 and the cam block 121. Since the sliding groove 210 is spirally upward, the housing 100 rises as the cam block 121 moves. When a downward movement is needed, rotate the sliding groove 200 so that the closed end of the sliding groove 210 contacts the cam block 121, thus pushing the housing 100 downward. This allows for adjustment of the focal length and distance between lens groups. This design not only simplifies the lens adjustment process but also improves the accuracy of the adjustment. During photography or videography, the photographer can easily adjust the lens's focal length and angle as needed to achieve the best shooting results.

[0034] Furthermore, as the cam block 121 moves along the path of the slide groove 210, the housing 100 moves along the optical axis, thereby enabling precise adjustment of the lens assembly 400 or the lens in the optical axis direction. Due to the design of the slide groove 210, the movement of the housing 100 becomes smooth and controllable, avoiding potential wobbling or offset during adjustment. In addition, the housing 100 can be easily raised or lowered by rotating the sliding sleeve groove 200, making operation simple and efficient. This design not only improves the accuracy of adjustment but also greatly simplifies the adjustment steps, making it more convenient for users to operate during use.

[0035] Please see Figure 2 and Figure 3 The housing 100 also includes a support frame 300 for mounting lenses or lens assemblies 400. The support frame 300 has several mounting grooves 320 at uniform angular intervals for mounting sliding balls 311. The sliding balls 311 rotate based on a support shaft 312, which is fixed by bolts 313 on both sides of the mounting grooves 320. The sliding balls 311 are positioned between the housing 100 and the support frame 300, and are in contact with the housing 100. When the housing 100 moves upward or downward in the sliding groove 200, the sliding balls 311 increase the smoothness of movement or the relative support force between the housing 100 and the sliding groove 200.

[0036] Please see Figure 1 , Figure 2 and Figure 4 The outer end of the housing 100 is further provided with a first locking ring 131 and a second locking ring 132; the first locking ring 131 is used to limit the position of the bearing 110; the second locking ring 132 is used to limit the position of the sliding sleeve groove 200. This ensures that the various components of the housing 100 remain stable during use and prevents displacement due to vibration or external forces. The design of the first locking ring 131 and the second locking ring 132 not only enhances the stability of the housing 100 but also improves the reliability of the overall structure. When adjusting the position of the housing 100, the user can use the locking rings to fix the bearing 110 and the sliding sleeve groove 200, thereby ensuring the accuracy of the adjustment. This design ensures both the stability of the housing 100 and facilitates user operation.

[0037] Preferably, the support frame 300 has a stepped mounting section 330 for mounting lenses or lens assemblies 400; this ensures that the lenses or lens assemblies 400 are stably placed in the predetermined position during installation, preventing shaking or displacement. The stepped design not only optimizes the spatial layout but also allows lenses or lens assemblies 400 of different specifications and functions to be arranged in an orderly manner, improving the functionality and flexibility of the entire device. Furthermore, the stepped design of the mounting section 330 facilitates the replacement and maintenance of lenses or lens assemblies 400 by the user, reducing operational difficulty and improving efficiency.

[0038] Preferably, the cam block 121 is equipped with a guide block 122 via a support column 124, and the guide block 122 is fixedly disposed within the support frame 300; when the housing 100 moves based on the sliding groove 200, the support frame 300 moves synchronously with the housing 100. A cam spring 123 is also provided on the support column 124 between the guide block 122 and the cam block 121. The cam spring 123 prevents hard contact between the cam block 121 and the sliding groove 210 when the sliding groove 200 rotates and compresses the cam block 121, providing a certain buffering effect and reducing wear and noise.

[0039] Please see Figure 1 and Figure 2 The elasticity of the cam spring 123 can also absorb vibration energy to a certain extent, further improving the stability and reliability of the housing 100 and the entire device during movement. It also allows the cam block 121 to abut against the slide groove 210 when no movement is required. This abutting and fixing effect is mainly achieved through the preload of the cam spring 123. When the cam block 121 and the slide groove 210 are in abutting state, the preload of the cam spring 123 ensures a tight fit, thereby preventing accidental sliding or displacement of the housing 100 and the device when no movement is needed.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A lens rotating device characterized by comprising: Including the shell (100) and the bearing (110) of the sleeve set in one end of the shell (100); The outer bearing (110) is also sleeved with a sliding sleeve groove (200), and the sliding sleeve groove (200) can rotate around the shell (100) through the bearing (110); The side of the shell (100) is also provided with a cam block (121); The inside of the sliding sleeve groove (200) is provided with a sliding groove (210) with a width matched with the cam block (121), and the sliding groove (210) is arranged in a spiral ascending manner; The sliding sleeve groove (200) is also provided with an opening (220) for accommodating the cam block (121), one side of the opening (220) is communicated with the sliding sleeve groove (200), and the other side abuts against the cam block (121); When the sliding sleeve groove (200) rotates based on the shell (100), the cam block (121) moves along the path of the sliding groove (210), and the shell (100) moves up or down in the sliding sleeve groove (200).

2. A lens rotating device according to claim 1, characterized in that When the cam block (121) moves along the path of the sliding groove (210), the shell (100) moves along the optical axis direction.

3. A lens rotating device according to claim 1, characterized in that The inside of the shell (100) is also provided with a support frame (300); A plurality of mounting grooves (320) for arranging sliding balls (311) are uniformly and angularly arranged on the support frame (300).

4. A lens rotating device according to claim 3, characterized in that The sliding ball (311) rotates based on the support shaft (312), and the support shaft (312) is fixed by the fixing bolts (313) arranged on both sides of the mounting groove (320).

5. A lens rotating device according to claim 3, characterized in that The sliding ball (311) is arranged at a position between the shell (100) and the support frame (300), and the sliding ball (311) contacts the shell (100); When the shell (100) moves up or down in the sliding sleeve groove (200), the smoothness of movement or the relative support force between the shell (100) and the sliding sleeve groove (200) is increased by the plurality of sliding balls (311).

6. A lens rotating device according to claim 5, characterized in that One end of the outside of the shell (100) is also provided with a first locking ring (131) and a second locking ring (132); The first locking ring (131) is used to limit the position of the bearing (110); The second locking ring (132) is used to limit the position of the sliding sleeve groove (200).

7. A lens rotating device according to claim 6, characterized in that One end of the sliding groove (210) is arranged in an opening (220), and the other end is arranged in a closed manner; When the shell (100) rises, the cam block (121) abuts against one side of the opening (220); When the shell (100) descends, the cam block (121) abuts against one end of the sliding groove (210) arranged in a closed manner.

8. A lens rotating device according to claim 3, characterized in that The support frame (300) is arranged in a stepped manner, and the mounting part (330) for mounting the lens or lens group (400) is arranged.

9. A lens rotating device according to claim 8, characterized in that The cam block (121) is installed with a guide block (122) through a support column, the guide block (122) is fixedly arranged in the support frame (300); when the shell (100) moves based on the sliding sleeve groove (200), the support frame (300) moves synchronously with the shell (100).

10. A lens rotating device according to claim 9, characterized in that The support column (124) between the guide block (122) and the cam block (121) is further provided with a cam spring (123).

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