Camera rotation mechanism and multi-functional camera
By designing the guide and positioning components, and utilizing the cam structure to convert the axial force of the elastic element into a circumferential rotational force, the camera lens can be rotated and positioned smoothly, solving the vibration problem during lens rotation and improving the product's stability and lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHENZHEN KANDAO TECH CO LTD
- Filing Date
- 2026-04-24
- Publication Date
- 2026-06-12
AI Technical Summary
In existing technologies, when a camera lens rotates to a preset position, it is prone to vibration due to the excessive elasticity of the spring, which affects product performance and service life.
By employing a guide assembly and a positioning assembly, the axial force exerted by the elastic element on the moving cam is converted into a circumferential rotational force through the cooperation of the outer fixed convex part and the outer moving convex part in the guide assembly. The moving cam drives the secondary lens module to rotate to a preset position, and the opposing rotational forces of the inner fixed convex part and the inner moving convex part provide buffering when the position is reached.
This achieves smooth lens rotation and positioning, avoids the effects of vibration, and improves product lifespan and shooting performance.
Smart Images
Figure CN122194549A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of cameras, and particularly to a camera rotation mechanism and a multi-functional camera. Background Technology
[0002] To achieve specific shooting shots, the camera lens can be rotated and mounted on the camera body. After rotation, the lens needs to be positioned at a preset location. Currently, the lens is typically rotated manually to this position, which is cumbersome and inconvenient. To facilitate lens rotation, a spring can be incorporated into the lens's rotating mechanism, using the spring's force to rotate the lens to its position. However, the spring force might cause the lens to rotate too quickly, resulting in vibrations upon reaching the preset position, which could affect product performance and reduce its lifespan. Summary of the Invention
[0003] This invention provides a camera rotation mechanism and a multi-functional camera, which facilitates rotation and can be positioned relatively stably at a preset position.
[0004] This invention provides a camera rotation mechanism for a rotational connection between a secondary lens module and a camera body. The mechanism includes a guide assembly comprising a fixed cam, a movable cam, and an elastic element. The movable cam is slidably disposed on the rotation axis of the secondary lens module to move closer to or away from the fixed cam. The elastic element is connected to the movable cam and provides a spring force to the movable cam to move toward the fixed cam. One of the fixed cam and the movable cam is connected to the camera body, and the other is connected to the secondary lens module and rotates together with the secondary lens module, such that the fixed cam and the movable cam rotate relative to each other. The region between the fixed cam and the movable cam includes an outer ring region and an inner ring region, with the inner ring region located within the outer ring region. The fixed cam is provided with an outer fixed convex part and an inner fixed convex part, and the movable cam is provided with an outer movable convex part and an inner movable convex part. Both the outer fixed convex part and the outer movable convex part are convex arc-shaped and located in the outer ring region. Both the inner fixed convex part and the inner movable convex part are convex arc-shaped and located in the inner ring region. When the secondary lens module deviates from the preset position, the outer fixed protrusion and the outer movable protrusion abut against each other and are arranged circumferentially. Under the elastic force of the elastic element, the movable cam rotates relative to the fixed cam, causing the inner fixed protrusion and the inner movable protrusion to move closer to each other in the circumferential direction, and causing the secondary lens module to rotate toward the preset position. When the secondary lens module rotates to the preset position, the inner fixed protrusion and the inner moving protrusion abut against each other and are arranged circumferentially. Under the elastic force of the elastic element, the moving cam rotates in the opposite direction to the fixed cam to provide the secondary lens module with a reverse rotational force to move it out of the preset position.
[0005] The guide assembly further includes a central shaft, which is arranged along the rotation axis of the secondary lens module. The movable cam is slidably disposed on the central shaft. The central shaft passes through the fixed cam, and a limiting part is provided at one end of the central shaft adjacent to the fixed cam to limit the fixed cam on the central shaft.
[0006] The guiding assembly further includes a guide cylinder, which comprises a cylinder wall and a cylinder bottom plate. One end of the cylinder wall is open, and the other end is fixedly connected to the cylinder bottom plate. The central shaft is coaxially arranged with the guide cylinder, and one end of the central shaft away from the fixed cam is connected to the cylinder bottom plate. The moving cam and the elastic element are both disposed inside the guide cylinder, and the cylinder wall and the moving cam are circumferentially positioned to allow them to rotate together. The elastic element is a compression spring, which is sleeved on the central shaft, and its two ends abut against the moving cam and the cylinder bottom plate, respectively. The fixed cam includes a cylindrical portion, and the inner surface of the cylinder wall at the open end is a cylindrical surface. The cylindrical portion is located inside the open end of the cylinder wall, and its outer circumferential surface is rotatably engaged with the cylindrical surface.
[0007] The fixed cam is provided with an inner fixed plane in the inner ring region, and the inner fixed plane and the inner fixed protrusion are connected end to end to form a ring; the movable cam is provided with an inner movable plane in the inner ring region, and the inner movable plane and the inner movable protrusion are connected end to end to form a ring; when the outer fixed protrusion abuts against the outer movable protrusion, the inner fixed plane and the inner movable protrusion are spaced apart axially, and the inner movable plane and the inner fixed protrusion are spaced apart axially.
[0008] Wherein, there are two radially opposite outer fixed protrusions, namely a first outer fixed protrusion and a second outer fixed protrusion; there are two radially opposite outer movable protrusions, namely a first outer movable protrusion and a second outer movable protrusion; the first outer movable protrusion is used to abut against the first outer fixed protrusion, and the second outer movable protrusion is used to abut against the second outer movable protrusion. The vertex of the first outer fixed convex portion is closer to the fixed cam relative to the vertex of the second outer fixed convex portion, and the vertex of the first outer movable convex portion is farther away from the movable cam relative to the vertex of the second outer movable convex portion; when the vertices of the first outer fixed convex portion and the first outer movable convex portion abut, the vertices of the second outer fixed convex portion and the second outer movable convex portion abut. The inner fixed protrusion and the first outer fixed protrusion are arranged radially, and the inner fixed protrusion protrudes axially beyond the first outer fixed protrusion; the inner movable protrusion and the second outer movable protrusion are arranged radially, and the inner movable protrusion protrudes axially beyond the second outer movable protrusion. When the inner moving convex portion abuts against the inner moving convex portion in the circumferential direction, the second outer fixed convex portion abuts against the first outer moving convex portion in the circumferential direction to provide a reverse rotational force to the moving cam.
[0009] The camera rotation mechanism further includes a positioning component, which is used to position the secondary lens module and the camera body at a preset position. The positioning component includes a positioning groove and a spring positioning bead. One of the positioning groove and the spring positioning bead is disposed on the camera body and the other is disposed on the secondary lens module. The positioning groove is a concave arc shape that cooperates with the spring positioning bead.
[0010] When the top of the spring positioning bead is located at the edge of the positioning groove, there is no circumferential rotational force between the moving cam and the fixed cam, so that the secondary lens module is driven to rotate to a preset position under the elastic force of the spring positioning bead; when the top of the spring positioning bead moves to the inner edge of the positioning groove, the inner fixed protrusion abuts against the inner moving protrusion.
[0011] There are two positioning slots, which cooperate with the same spring positioning bead to position the secondary lens module and the camera body at two predetermined positions respectively. The positioning component further includes a guide surface connected between the openings of the two positioning slots, which includes a guide plane and two guide ramps; the guide plane is connected between the two guide ramps; in the direction of the rotation axis of the sub-lens module, the guide plane is away from the spring positioning bead relative to the opening of the positioning slot. The two guide ramps are respectively connected to the openings of the two positioning grooves to abut against the spring positioning bead, so as to realize the transition of the spring positioning bead between the guide plane and the positioning groove.
[0012] The guide component and the positioning component are respectively located at opposite ends of the rotation axis of the secondary lens module.
[0013] The guide component is mounted on the secondary lens module, and the fixed cam is fixedly connected to the camera body. The positioning groove is located on the secondary lens module, and the spring positioning bead is located on the camera body.
[0014] The present invention also provides a multi-functional camera, including a camera body, a secondary lens module and the aforementioned camera rotation mechanism, wherein the lens module is rotatably connected to the camera body through the camera rotation mechanism.
[0015] The camera rotation mechanism and multi-functional camera provided by this invention utilize the cooperation of the outer fixed convex part and the outer movable convex part in the guide assembly to convert the axial force of the elastic element acting on the movable cam into the circumferential rotational force of the movable cam. The movable cam drives the secondary lens module to rotate, causing the secondary lens module to rotate toward a preset position. Therefore, when the user rotates the secondary lens module to deviate from the preset position, the elastic force of the elastic element allows the secondary lens module to automatically rotate to the preset position that is mutually positioned with the camera body, thus facilitating use. When the secondary lens module rotates to the preset position, the inner fixed convex part abuts against the inner movable convex part, converting the elastic force of the elastic element into a reverse rotational force that moves the movable cam and the secondary lens module out of the preset position. This buffers the secondary lens module when it reaches the preset position, preventing lens vibration from affecting shooting performance. The structures for applying the rotational force and the reverse rotational force are located at the inner and outer layers respectively, without interfering with each other, ensuring the reliability of the rotation. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments are briefly introduced below. The drawings described below are only the corresponding drawings of some embodiments of the present invention.
[0017] Figure 1 This is a schematic diagram of the structure of the multi-functional camera provided in the preferred embodiment of the present invention in panoramic view. Figure 2 yes Figure 1 A structural diagram of a multi-functional camera in panoramic view from another angle; Figure 3 yes Figure 2 A schematic diagram of the structure of a multi-functional camera in stereoscopic position; Figure 4 yes Figure 1 Exploded view of a multi-functional camera; Figure 5 yes Figure 4 An exploded view of a multi-functional camera from another angle; Figure 6 yes Figure 5 A schematic diagram of the rotating frame and positioning components of a multi-functional camera; Figure 7 yes Figure 6 Exploded view of the rotating frame and positioning components; Figure 8 yes Figure 6 A three-dimensional cross-sectional view of the rotating frame and positioning components; Figure 9 and Figure 10 yes Figure 7 Schematic diagram of the fixed cam of the positioning component from two different perspectives; Figure 11 and Figure 12 yes Figure 7 A schematic diagram of the moving cam of the positioning component from two different perspectives; Figure 13 and Figure 14 yes Figure 7 Diagrams showing the interaction between the center fixed cam and the moving cam in the panoramic position from two different perspectives; Figure 15 and Figure 16 yes Figure 13 A schematic diagram of the interaction between two perspectives when the central moving cam rotates 10°; Figure 17 and Figure 18 yes Figure 13 A schematic diagram of the interaction between two perspectives when the central moving cam rotates 45°; Figure 19 yes Figure 13 A schematic diagram showing the engagement of the moving cam when it rotates 90°. Figure 20 and Figure 21 yes Figure 13 A schematic diagram of the interaction between two perspectives when the central moving cam rotates 135°; Figure 22 and Figure 23 yes Figure 13 A schematic diagram of the interaction between two perspectives when the central moving cam rotates 170°; Figure 24 and Figure 25 yes Figure 13 A schematic diagram of the interaction between two perspectives when the central moving cam rotates 180°. Detailed Implementation
[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0019] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0020] Please see Figure 1 , Figure 2 and Figure 3 A preferred embodiment of the present invention provides a multi-functional camera, including a camera body 300, a secondary lens module 200, and a camera rotation mechanism. The lens module is rotatably connected to the camera body 300 via the camera rotation mechanism, allowing the secondary lens module 200 to rotate relative to the camera body 300 and be positioned at a preset position. A main lens 301 is disposed on the camera body 300, and a secondary lens 201 is disposed on the secondary lens module 200. Rotation between the secondary lens module 200 and the camera body 300 changes the relative position between the main lens 301 and the secondary lens 201, thereby enabling multi-functional photography.
[0021] In this embodiment, the secondary lens module 200 has two preset positions: a panoramic position and a stereoscopic position. For example... Figure 1 and Figure 2 As shown, when the secondary lens module 200 is in the panoramic position, the main lens 301 and the secondary lens 201 face opposite sides of the camera body 300 for panoramic shooting. Figure 3 As shown, when the secondary lens module 200 is in a stereo position, the main lens 301 and the secondary lens 201 are located on the same side of the camera body 300 for stereo shooting.
[0022] like Figure 4 , Figure 5 As shown, the camera rotation mechanism includes a guide component 1 and a positioning component 2, which are respectively disposed at opposite ends of the rotation axis of the secondary lens module 200. The guide component 1 is used to drive the secondary lens module 200 to rotate relative to the camera body 300, and the positioning component 2 is used to position the secondary lens module 200 and the camera body 300 at preset positions.
[0023] like Figure 4 , Figure 6 As shown, the positioning component 2 includes a positioning groove 22 and a spring positioning bead 21. One of the positioning groove 22 and the spring positioning bead 21 is disposed on the camera body 300, and the other is disposed on the secondary lens module 200. The positioning groove 22 is a concave arc shape that cooperates with the spring positioning bead 21. There are two positioning grooves 22, which are respectively disposed on opposite sides of the rotation axis of the secondary lens module 200 to position the secondary lens module 200 at two positions. In this embodiment, the secondary lens module 200 includes a rotating frame 202, and the positioning groove 22 is disposed on the rotating frame 202.
[0024] like Figure 7 and Figure 8As shown, the guide assembly 1 includes a fixed cam 11, a movable cam 12, an elastic element 13, a central shaft 10, and a guide cylinder 14. The central shaft 10 is arranged along the rotation axis of the sub-lens module 200 and cooperates with the guide cylinder 14 to connect the guide assembly 1 to form an integral structure. On the rotation axis of the sub-lens module 200, the movable cam 12 is slidably arranged to move closer to or away from the fixed cam 11. In this embodiment, the movable cam 12 is slidably arranged on the central shaft 10. The elastic element 13 is connected to the movable cam 12 and provides a spring force to the movable cam 12 to move toward the fixed cam 11.
[0025] One of the fixed cam 11 and the movable cam 12 is connected to the camera body 300, and the other is connected to the secondary lens module 200 and rotates together with the secondary lens module 200, so that the fixed cam 11 and the movable cam 12 rotate relative to each other. In this embodiment, the fixed cam 11 is connected to the camera body 300, and the movable cam 12 is connected to the secondary lens module 200 and rotates together with the secondary lens module 200. Of course, in other embodiments, the movable cam 12 may be connected to the camera body 300 and slidably mounted on the camera body along the central shaft 10; the fixed cam 11 is connected to the secondary lens module 200 and rotates together with the secondary lens module 200. When the secondary lens module 200 rotates relative to the camera body 300, the fixed cam 11 and the movable cam 12 rotate relative to each other, and the movable cam 12 moves axially through their interaction.
[0026] Furthermore, the central shaft 10 passes through the fixed cam 11, and a limiting part 101 is provided at one end of the central shaft 10 adjacent to the fixed cam 11 to limit the fixed cam 11 on the central shaft 10, so that the fixed cam 11 will not come off the central shaft 10, and the guide assembly 1 is a whole, which facilitates assembly and improves the stability and reliability of the cooperation between the fixed cam 11 and the moving cam 12. In this embodiment, the guide assembly 1 is installed on the secondary lens module 200 as a whole, and is connected to the secondary lens module 200 to form a whole structure. Then the fixed cam 11 is connected to the camera body 300, which facilitates assembly.
[0027] The guide cylinder 14 includes a cylinder wall 141 and a cylinder bottom plate 142. One end of the cylinder wall 141 is open, and the other end is fixedly connected to the cylinder bottom plate 142, thereby forming a receiving space in the guide cylinder 14. The central shaft 10 is coaxially arranged with the guide cylinder 14, and one end of the central shaft 10 away from the fixed cam 11 is connected to the cylinder bottom plate 142.
[0028] Preferably, the central shaft 10 passes through the bottom plate 142, and a retaining spring 15 is provided on the central shaft 10. The retaining spring 15 is located on the outer side of the bottom plate 142, which facilitates the assembly and connection between the central shaft 10 and the bottom plate 142. The central shaft 10 and the inner side of the bottom plate 142 are connected by a conical positioning structure. The conical positioning structure and the retaining spring 15 cooperate to axially position the central shaft 10 and the guide cylinder 14.
[0029] Both the movable cam 12 and the elastic element 13 are disposed within the guide cylinder 14. The cylinder wall 141 is circumferentially positioned with the movable cam 12, allowing them to rotate together. The elastic element 13 is a compression spring, sleeved on the central shaft 10, with its two ends abutting against the movable cam 12 and the bottom plate 142 of the cylinder, respectively, to apply a force to the movable cam 12 toward the fixed cam 11. Through the structural cooperation between the guide cylinder 14 and the central shaft 10, the guide assembly 1 can be reliably formed into a single integrated structure.
[0030] The secondary lens module 200 includes a rotating frame 202, and the guide cylinder 14 is integrally formed with the rotating frame 202 to facilitate processing and manufacturing, and to connect the guide assembly 1 and the secondary lens module 200 into an integral structure.
[0031] In this embodiment, the inner surface of the cylinder wall 141 is provided with a first plane 1411, which is an elongated planar shape along the central axis 10. The side of the movable cam 12 is provided with a second plane 129, which is parallel to the first plane 1411. By utilizing the cooperation of the first plane 1411 and the second plane 129, the axial movement of the movable cam 12 can be made more stable, and the axial positioning cooperation between the movable cam 12 and the guide cylinder 14 can be achieved, so that the two cannot rotate relative to each other, but can only rotate together. Furthermore, the cooperation of the first plane 1411 and the second plane 129 is in two sets, respectively provided on opposite sides of the central axis 10.
[0032] The fixed cam 11 includes a cylindrical portion 1101. The inner surface of the cylinder wall 141 at the open end is a cylindrical surface 1401. The cylindrical portion 1101 is located inside the open end of the cylinder wall 141, and its outer circumferential surface is rotatably engaged with the cylindrical surface 1401, so that the fixed cam 11 can rotate relative to the guide cylinder 14. This structure allows the cylindrical portion 1101 of the fixed cam 11 to be positioned inside the guide cylinder 14, thereby ensuring that the mating structure between the fixed cam 11 and the movable cam 12 is located inside the guide cylinder 14, thus avoiding interference from other external objects and ensuring operational reliability.
[0033] like Figure 7As shown, the fixed cam 11 also includes a flat plate portion 1102, which is connected to one end of the cylindrical portion 1101. The flat plate portion 1102 is strip-shaped, with its two ends protruding from opposite sides of the cylindrical portion 1101. The flat plate portion 1102 facilitates the assembly and connection between the fixed cam 11 and the camera body 300. The flat plate portion 1102 and the cylindrical portion 1101 are integrally formed to ensure the overall structural strength of the fixed cam 11.
[0034] like Figure 5 As shown, a mounting groove 302 is provided on the camera body 300, and the flat plate part 1102 is disposed in the mounting groove 302 and connected to the camera body 300 by screws, thereby fixing the fixed cam 11 to the camera body 300.
[0035] The area between the fixed cam 11 and the movable cam 12 includes an outer ring area and an inner ring area. These can be understood as two annular areas centered on the rotation axis of the secondary lens module 200. The inner ring area is located within the outer ring area. Figure 9 , Figure 10 As shown, the fixed cam 11 is provided with an outer fixed protrusion 111a / 111b and an inner fixed protrusion 112. In this embodiment, both the outer fixed protrusion 111a / 111b and the inner fixed protrusion 112 are provided at the end of the cylindrical portion 1101. Figure 11 , Figure 12 As shown, the movable cam 12 is provided with an outer movable protrusion 121a / 121b and an inner movable protrusion 122; the outer fixed protrusion 111a / 111b and the outer movable protrusion 121a / 121b are both convex arc-shaped and located in the outer ring region, so that when the fixed cam 11 and the movable cam 12 rotate relative to each other, the outer fixed protrusion 111a / 111b and the outer movable protrusion 121a / 121b move in the outer ring region; the inner fixed protrusion 112 and the inner movable protrusion 122 are both convex arc-shaped and located in the inner ring region, so that when the fixed cam 11 and the movable cam 12 rotate relative to each other, the inner fixed protrusion 112 and the inner movable protrusion 122 move relative to each other in the inner ring region, so as not to interfere with the outer fixed protrusion 111a / 111b and the outer movable protrusion 121a / 121b.
[0036] When the secondary lens module deviates from the preset position, the outer fixed protrusion 111a / 111b and the outer movable protrusion 121a / 121b abut against each other and are arranged circumferentially. Since both the outer fixed protrusion 111a / 111b and the outer movable protrusion 121a / 121b are convex arc-shaped, they can convert the axial force of the elastic element 13 acting on the movable cam 12 into the circumferential rotational force of the movable cam 12. Under the elastic force of the elastic element 13, the movable cam 12 rotates relative to the fixed cam 11. The movable cam 12 or the fixed cam 11 drives the secondary lens module 200 to rotate, so that the inner fixed protrusion 112 and the inner movable protrusion 122 move closer to each other in the circumferential direction, and the secondary lens module 200 rotates toward the preset position. Therefore, when the user rotates the secondary lens module 200, under the elastic force of the elastic element 13, the secondary lens module 200 can automatically rotate to the preset position that is positioned relative to the camera body 300, which is convenient for use.
[0037] When the secondary lens module 200 rotates to the preset position, such as Figure 13 , Figure 14 As shown, the inner fixed protrusion 112 and the inner movable protrusion 122 abut against each other and are arranged circumferentially. Since both the inner fixed protrusion 112 and the inner movable protrusion 122 are convex arc-shaped, when they abut against each other in the circumferential direction, they can also convert the axial force of the elastic element 13 acting on the movable cam 12 into the circumferential rotational force of the movable cam 12. Under the elastic force of the elastic element 13, the movable cam 12 rotates in the opposite direction to the fixed cam 11 to provide the secondary lens module 200 with a reverse rotational force to move it out of the preset position, thereby buffering the secondary lens module 200 when it reaches the preset position and avoiding lens vibration from affecting the shooting performance; at the same time, it is convenient for the user to move the secondary lens module 200 away from the preset position, thus making it convenient to use. The inner fixed protrusion 112 and the inner movable protrusion 122 are fitted together at the inner fixed ring surface and the inner movable ring surface on the inner side, while the outer fixed protrusions 111a / 111b and the outer movable protrusions 121a / 121b are fitted together at the outer fixed ring surface and the outer movable ring surface on the outer side. These two fitting relationships are located at the inner and outer layers respectively, and do not interfere with each other, ensuring the reliability of rotation. Here, it can be understood that in this invention, circumferential, axial, and radial directions are all relative to the rotation axis of the secondary lens module 200, i.e., the central axis 10.
[0038] When the outer fixed protrusions 111a / 111b abut against the outer movable protrusions 121a / 121b to orient the secondary lens module 200 toward a preset position, the spring positioning bead 21 moves toward the positioning groove 22, so that the secondary lens module 200 and the camera body 300 are positioned at the preset position by the cooperation of the spring positioning pin and the positioning groove 22. When the spherical top of the spring positioning bead 21 is located at the edge of the positioning groove 22, there is no circumferential rotational force between the movable cam 12 and the fixed cam 11, and the secondary lens module 200 moves toward the predetermined positioning position under the elastic force of the spring positioning bead 21.
[0039] When the top of the spring positioning bead 21 moves to the inner edge of the positioning groove 22, the inner fixed protrusion 112 abuts against the inner movable protrusion 122. That is, when the top of the spring positioning bead 21 enters the positioning groove 22, the elastic force of the spring positioning bead 21 can be used to rotate the sub-lens module 200 without the force between the outer fixed protrusions 111a / 111b and the outer movable protrusions 121a / 121b. At this time, the outer fixed protrusions 111a / 111b and the outer movable protrusions 121a / 121b can separate, and the inner fixed protrusion 112 and the inner movable protrusion 122 begin to abut against each other. The reverse buffering force between the two buffers the positioning rotation force provided by the spring positioning bead 21, so that the spring positioning post enters the positioning groove 22 more smoothly, thereby allowing the sub-lens module 200 to move to the preset position more smoothly.
[0040] When the secondary lens module 200 moves to the preset position, the outer fixed protrusion 111a / 111b and the outer moving protrusion 121a / 121b separate so that there is no longer any interaction force between them. Only through the cooperation of the inner fixed protrusion 112 and the inner moving protrusion 122, a reverse rotational force is applied to the moving cam 12 to fully exert the reverse buffering effect on the moving cam 12.
[0041] like Figure 9 , Figure 10 As shown, the fixed cam 11 also has an inner fixed plane 114 in the inner ring region, and the inner fixed plane 114 and the inner fixed protrusion 112 are connected end to end in a ring shape. Figure 11 , Figure 12 As shown, the movable cam 12 also has an inner movable plane 124 in the inner ring region, which is connected end-to-end with the inner movable protrusion 122 to form a ring. When the outer fixed protrusion 111a / 111b abuts against the outer movable protrusion 121a / 121b, the inner fixed plane 114 and the inner movable protrusion 122 are spaced apart in the axial direction, and the inner movable plane 124 and the inner fixed protrusion 112 are spaced apart in the axial direction. That is, in the inner ring region, the fixed cam 11 and the movable cam 12 are separated so that they do not generate interaction force, thereby ensuring that the interaction force between the outer fixed protrusion 111a / 111b and the outer movable protrusion 121a / 121b is fully utilized.
[0042] The outer fixed protrusions 111a / 111b are two radially opposite parts, that is, they are respectively located on opposite sides of the central axis 10, and two outer fixed recesses 113a / 113b are formed between the two outer fixed protrusions 111a / 111b. For ease of description, the two outer fixed protrusions 111a / 111b are respectively the first outer fixed protrusion 111a and the second outer fixed protrusion 111b, and the two outer fixed recesses 113a / 113b are respectively the first outer fixed recess 113a and the second outer fixed recess 113b. The first outer fixed protrusion 111a, the first outer fixed recess 113a, the second outer fixed protrusion 111b and the second outer fixed recess 113b are connected sequentially in the outer ring area in a smooth transition wave shape.
[0043] The two externally moving protrusions 121a / 121b are arranged radially opposite each other, that is, respectively located on opposite sides of the central axis 10, and two externally moving recesses 123a / 123b are formed between the two externally moving protrusions 121a / 121b. For ease of description, the two externally moving protrusions 121a / 121b are respectively the first externally moving protrusion 121a and the second externally moving protrusion 121b, and the two externally moving recesses 123a / 123b are respectively the first externally moving recess 123a and the second externally moving recess 123b. The first externally moving protrusion 121a, the first externally moving recess 123a, the second externally moving protrusion 121b and the second externally moving recess 123b are connected sequentially in the outer ring region in a smooth, wave-like transition.
[0044] The first outer moving cam 121a is used to abut against the first outer fixed cam 111a, and the second outer moving cam 121b is used to abut against the second outer moving cam 121b. By utilizing the two sets of cams in the outer layer, the balance of the moving cam 12 during rotation can be improved.
[0045] In this embodiment, two preset positions are arranged circumferentially along the central axis 10, so that the secondary lens module 200 and the camera body 300 can be positioned in two different locations. In this embodiment, the two preset positions are a stereoscopic position and a panoramic position, symmetrically arranged on opposite sides of the central axis 10, so that the secondary camera module can rotate 180° relative to the camera body 300. Here, the rotation angle between the two preset positions can be set according to the shooting needs.
[0046] The camera body 300 has a receiving slot 303 for accommodating the secondary lens module 200. When the secondary lens module 200 is in the panoramic position, it is housed in the receiving slot 303 to reduce the overall space occupied by the multi-functional camera. The rotation angle of the secondary lens module 200 in this position is defined as 0°. When the secondary lens module 200 is in the stereo position, one end of the secondary lens module 200 rotates out of the receiving slot 303. The rotation angle of the secondary lens module 200 in this position can be defined as 180°. That is, the secondary lens module 200 needs to rotate 180° when switching between the two positions.
[0047] like Figure 19 As shown, when the secondary lens module 200 rotates to the exact center of the two preset positions, the apex of the first fixed protrusion 111a abuts against the apex of the first movable protrusion 121a, and the apex of the second fixed protrusion 111b abuts against the apex of the second movable protrusion 121b. When the secondary lens module 200 deviates from the aforementioned center position to any preset position, under the action of the slope abutment of the first fixed protrusion 111a and the first movable protrusion 121a, and the slope abutment of the second fixed protrusion 111b and the second movable protrusion 121b, the secondary lens module 200 can automatically rotate to the deviated preset position, achieving rapid return to its original position, which is practical and convenient.
[0048] There is one fixed protrusion 112 and one movable protrusion 122. When the secondary lens module 200 is in the panoramic position, one circumferential side of the fixed protrusion 112 abuts against one circumferential side of the movable protrusion 122. When the secondary lens module 200 is in the stereo position, the other circumferential side of the fixed protrusion 112 abuts against the other circumferential side of the movable protrusion 122.
[0049] In this embodiment, the vertex of the first outer fixed protrusion 111a is closer to the fixed cam 11 than the vertex of the second outer fixed protrusion 111b, meaning the protrusion height of the vertex of the first outer fixed protrusion 111a on the fixed cam 11 is relatively low. The vertex of the first outer movable protrusion 121a is farther from the movable cam 12 than the vertex of the second outer movable protrusion 121b, meaning the protrusion height of the vertex of the first outer movable protrusion 121a on the movable cam 12 is relatively high. When the vertices of the first outer fixed protrusion 111a and the first outer movable protrusion 121a abut, the vertices of the second outer fixed protrusion 111b and the second outer movable protrusion 121b abut, to maintain the balance of the movable cam 12 and the fixed cam 11 on both sides of the central axis 10.
[0050] The inner fixed protrusion 112 and the first outer fixed protrusion 111a are arranged radially, and the inner fixed protrusion 112 protrudes axially from the first outer fixed protrusion 111a. The inner movable protrusion 122 and the second outer movable protrusion 121b are arranged radially, and the inner movable protrusion 122 protrudes axially from the second outer movable protrusion 121b.
[0051] When the inner moving protrusion 122 abuts against each other in the circumferential direction, the second outer fixed protrusion 111b abuts against the first outer moving protrusion 121a in the circumferential direction to provide a reverse buffer rotational force to the moving cam 12. By using the two abutting positions located on both sides of the central axis 10, the forces on both sides of the moving cam 12 are balanced when the secondary lens module 200 is in the preset position.
[0052] The protruding shape of the second outer fixed protrusion 111b matches the concave shape of the first outer movable recess 123a and the second outer movable recess 123b, so that the second outer fixed protrusion 111b can smoothly pass through the first outer movable recess 123a and the second outer movable recess 123b. The protruding shape of the second outer movable protrusion 121b matches the concave shape of the first outer fixed recess 113a and the second outer fixed recess 113b, so that the second outer movable protrusion 121b can smoothly pass through the first outer fixed recess 113a and the second outer fixed recess 113b.
[0053] When the top of the spring positioning bead 21 is located at the edge of the positioning groove 22, such as Figure 15 , Figure 16 As shown, the apex of the second outer fixed protrusion 111b is located at the bottom point of the first outer movable recess 123a or the second outer movable recess 123b. The first outer fixed protrusion 111a and the first outer movable protrusion 121a are at the critical point of contact, and the inner movable protrusion 122 and the inner movable protrusion 122 are at the critical point of contact. The top surface of the first outer fixed protrusion 111a is separated from the bottom point of the first outer movable recess 123a or the second outer movable recess 123b, and the top surface of the first outer movable protrusion 121a is separated from the bottom point of the first outer fixed recess 113a or the second outer fixed recess 113b, so as to achieve a smooth transition from the contact between the first outer fixed protrusion 111a and the first outer movable protrusion to the contact between the inner movable protrusion 122 and the inner movable protrusion 122. At this time, there is no circumferential rotational force between the movable cam 12 and the fixed cam 11, so that the secondary lens module 200 can be rotated to a preset position under the elastic force of the spring positioning bead 21. Here, it can be understood that the contact critical point is the position where contact has just occurred and no interaction force has yet been generated. The edge of the positioning groove 22 is provided with a rounded corner structure so that the top of the spring positioning bead 21 can slide into the positioning groove 22 under the elastic force of the spring positioning bead 21.
[0054] In this embodiment, when the top of the spring positioning bead 21 is located at the edge of the positioning groove 22, the secondary lens module 200 needs to rotate another 8-12° to enter the preset position. Specifically, the secondary lens module 200 needs to rotate another 10° to enter the preset position. Its continued rotation angle is small, which can better achieve the accurate positioning of the secondary lens module 200.
[0055] When the top of the spring positioning bead 21 moves to the inner edge of the positioning groove 22, the inner fixed protrusion 112 abuts against the inner moving protrusion 122, and the second outer fixed protrusion 111b abuts against the first outer moving protrusion 121a in the circumferential direction. The two abutting positions generate opposite rotational forces, so that the sub-lens module 200 rotates in the direction of moving out of the preset position, thereby buffering the elastic force of the spring positioning bead 21, so that the sub-lens module 200 moves smoothly to the preset position.
[0056] like Figure 6As shown, there are two positioning slots 22, which cooperate with the same spring positioning bead 21 to position the secondary lens module 200 and the camera body 300 in panoramic and stereoscopic positions, respectively. In this embodiment, the positioning slots 22 are located on the rotating frame 202 of the secondary lens module 200, and can rotate relative to the camera body 300 along with the secondary lens module 200; correspondingly, the spring positioning bead 21 is located on the camera body 300. When the spring positioning bead 21 abuts in one positioning slot 22, the secondary lens module 200 is located in the panoramic position; when the spring positioning bead 21 abuts in the other positioning slot 22, the secondary lens module 200 is located in the stereoscopic position.
[0057] like Figure 6 As shown, the positioning component 2 also includes a guide surface 23, which is connected between the openings of the two positioning grooves 22. The guide surface 23 includes a guide plane 231 and two guide inclined surfaces 232. The guide plane 231 is connected between the two guide inclined surfaces 232, and the two guide inclined surfaces 232 are respectively connected to the openings of the two positioning grooves 22 for abutting against the spring positioning bead 21 to realize the transition of the spring positioning bead 21 between the guide plane 231 and the positioning groove 22.
[0058] In the direction of the rotation axis of the secondary lens module 200, the guide plane 231 is far away from the spring positioning bead 21 relative to the slot of the positioning groove 22, so that when the spring positioning bead 21 moves to the guide plane 231, the force between the spring positioning bead 21 and the guide plane 231 is small or even non-existent, so that the secondary lens module 201 is not subject to the force of the spring positioning bead 21 when it rotates to the middle position, thereby reducing the impact on the rotation of the secondary lens module 200.
[0059] Using the guide ramp 232, when the spring positioning bead 21 moves from the guide plane 231 to the positioning groove 22 via the guide ramp 232, the spring positioning bead 21 abuts against the guide ramp 232, thereby applying a spring force to the guide ramp 232, that is, applying a reverse rotational force to the sub-lens module 200, thereby slowing down the speed at which the sub-lens module 200 moves to the preset position, so that the sub-lens module 200 smoothly enters the preset position.
[0060] In this embodiment, the cooperation between the guide surface 23 and the spring positioning bead 21, and the cooperation between the fixed cam 11 and the moving cam 12, together achieve the buffering when the secondary lens module 200 moves to the preset position, ensuring that the secondary lens module 200 moves smoothly and avoids vibration, thereby ensuring the stability and reliability of the lens.
[0061] The camera rotation mechanism also includes an axis alignment component to ensure the stability and reliability of the rotation center of the secondary lens module 200, thereby guaranteeing precise alignment of the main lens 301 and the secondary lens 201. Figure 4As shown, the axis alignment assembly includes an axis protrusion 41 and an axis groove 42. One of the axis protrusion 41 and the axis groove 42 is disposed on the camera body 300, and the other is disposed on the secondary lens module 200. The axis protrusion 41 and the axis groove 42 are connected by a conical positioning structure. In this embodiment, the axis protrusion 41 is disposed on the rotating frame 202 of the secondary lens module 200, and the axis groove 42 is disposed on the camera body 300.
[0062] The following describes the rotation process of the secondary lens module 200 relative to the camera body 300 from a panoramic position to a stereo position.
[0063] like Figure 13 and Figure 14 As shown, when the secondary lens module 200 is in the panoramic position, its rotation angle is 0°. The circumferential side of the inner fixed protrusion 112 abuts against the circumferential side of the inner movable protrusion 122, and the circumferential side of the second outer fixed protrusion 111b abuts against the circumferential side of the first outer movable protrusion 121a. Under the elastic force of the elastic member 13, the movable cam 12 rotates in the opposite direction to the fixed cam 11, providing a reverse rotational force to the secondary lens module 200 to move it out of the preset position. At this time, the spring positioning bead 21 is located in a positioning groove 22.
[0064] like Figure 15 and Figure 16 As shown, when the user rotates the secondary lens module 200 10° towards the stereoscopic position, the apex of the second outer fixed protrusion 111b is located at the bottom point of the second outer movable concave portion 123b, the apex of the first outer movable protrusion 121a is located at the bottom point of the second outer fixed concave portion 113b, the circumferential side of the first outer fixed protrusion 111a and the circumferential side of the first outer movable protrusion 121a are at the critical point of contact, and the circumferential side of the inner movable protrusion 122 and the circumferential side of the inner movable protrusion 122 are at the critical point of contact. The elastic force of the elastic element will not be converted into a circumferential rotational force between the movable cam 12 and the fixed cam 11. Therefore, there is no circumferential rotational force between the movable cam 12 and the fixed cam 11. At this time, the spring positioning bead 21 is located at the edge of a positioning groove 22. If the user removes the external force, under the action of the elastic force of the spring positioning bead 21, the spring positioning bead 21 moves into the positioning groove 22 and automatically returns to the panoramic position.
[0065] like Figure 17 and Figure 18As shown, when the user rotates the secondary lens module 200 45° towards the three-dimensional position, the inner moving protrusion 122 and the inner fixed protrusion 112 separate and do not generate an interaction force. In the axial direction, the inner moving plane 124 is opposite to and spaced apart from the inner fixed protrusion 112, and the inner fixed plane 114 is opposite to and spaced apart from the inner moving protrusion 122. That is, the fixed cam and the moving cam have no interaction force in the inner ring region. The circumferential side of the first outer fixed protrusion 111a abuts against the circumferential side of the first outer moving protrusion 121a, and the circumferential side of the second outer fixed protrusion 111b abuts against the circumferential side of the second outer moving protrusion 121b. In the outer ring region, the fixed cam and the moving cam generate a circumferential interaction force, converting the elastic force of the elastic element into the relative rotation of the fixed cam and the moving cam, causing the secondary lens module to move towards the panoramic position. At this time, if the user removes the force on the secondary lens module, the secondary lens module can automatically rotate towards the panoramic position. At this time, the spring positioning bead 21 and the guide plane 231 are arranged opposite each other in the axial direction and are spaced apart so that the spring positioning bead 21 will not apply elastic force to the sub-lens module, thereby not hindering the reset of the sub-lens module.
[0066] When the secondary lens module 200 rotates from the 45° position toward the panoramic position until the spring positioning bead 21 abuts against a guide slope 232, the elasticity of the spring positioning bead 21 can buffer the rotation of the secondary lens module 200 toward the panoramic position, so that it smoothly enters the panoramic position.
[0067] like Figure 19 As shown, when the user rotates the secondary lens module 200 90° toward the three-dimensional position, the inner moving protrusion 122 and the inner fixed protrusion 112 separate and do not generate an interaction force. In the axial direction, the inner moving plane 124 is opposite to and spaced apart from the inner fixed protrusion 112, and the inner fixed plane 114 is opposite to and spaced apart from the inner moving protrusion 122. That is, the fixed cam and the moving cam have no interaction force in the inner ring region. The vertex of the first outer fixed protrusion 111a abuts against the vertex of the first outer moving protrusion 121a, and the vertex of the second outer fixed protrusion 111b abuts against the vertex of the second outer moving protrusion 121b. The secondary lens module is located at the middle position between the two predetermined positions. At this time, if the secondary lens module deviates to either predetermined position, the secondary lens module can automatically move to the predetermined position under the action of the elastic element.
[0068] like Figure 20 , Figure 21As shown, when the user rotates the secondary lens module 200 135° towards the stereoscopic position, the inner moving protrusion 122 and the inner fixed protrusion 112 separate and do not generate an interaction force. In the axial direction, the inner moving plane 124 is opposite to and spaced apart from the inner fixed protrusion 112, and the inner fixed plane 114 is opposite to and spaced apart from the inner moving protrusion 122. That is, the fixed cam and the moving cam have no interaction force in the inner ring region. The other circumferential side of the first outer fixed protrusion 111a abuts against the other circumferential side of the first outer moving protrusion 121a, and the other circumferential side of the second outer fixed protrusion 111b abuts against the other circumferential side of the second outer moving protrusion 121b. In the outer ring region, the fixed cam and the moving cam generate a circumferential interaction force, converting the elastic force of the elastic element into the relative rotation of the fixed cam and the moving cam, causing the secondary lens module to move towards the panoramic position. At this time, if the user removes the force on the secondary lens module, the secondary lens module can automatically rotate towards the stereoscopic position. At this time, the spring positioning bead 21 and the guide plane 231 are arranged opposite each other in the axial direction and are spaced apart so that the spring positioning bead 21 will not apply elastic force to the sub-lens module, thereby not hindering the reset of the sub-lens module.
[0069] When the secondary lens module 200 rotates from the 135° position toward the three-dimensional position until the spring positioning bead 21 abuts against another guide slope 232, the elasticity of the spring positioning bead 21 can buffer the rotation of the secondary lens module 200 toward the three-dimensional position, so that it smoothly enters the three-dimensional position.
[0070] like Figure 22 and Figure 23 As shown, when the user rotates the secondary lens module 200 170° toward the three-dimensional position, the apex of the second outer fixed protrusion 111b is located at the bottom point of the first outer movable concave portion 123a, the apex of the first outer movable protrusion 121a is located at the bottom point of the first outer fixed concave portion 113a, the other circumferential side of the first outer fixed protrusion 111a and the other circumferential side of the first outer movable protrusion 121a are at the critical point of contact, and the other circumferential side of the inner movable protrusion 122 and the other circumferential side of the inner movable protrusion 122 are at the critical point of contact. The elastic force of the elastic element will not be converted into a circumferential rotational force between the movable cam 12 and the fixed cam 11. Therefore, there is no circumferential rotational force between the movable cam 12 and the fixed cam 11. At this time, the spring positioning bead 21 is located at the edge of the other positioning groove 22. If the user removes the external force, under the action of the elastic force of the spring positioning bead 21, the spring positioning bead 21 moves into the other positioning groove 22, and can automatically move to the three-dimensional position.
[0071] like Figure 24 and Figure 25As shown, when the secondary lens module 200 is in the three-dimensional position, its rotation angle is 180°. The other circumferential side of the inner fixed protrusion 112 abuts against the other circumferential side of the inner movable protrusion 122, and the other circumferential side of the second outer fixed protrusion 111b abuts against the other circumferential side of the first outer movable protrusion 121a. Under the elastic force of the elastic member 13, the movable cam 12 rotates in the opposite direction to the fixed cam 11, providing a reverse rotational force to the secondary lens module 200 to move it out of the three-dimensional position, thereby decelerating and buffering the secondary lens module 200 when it enters the three-dimensional position. At this time, the spring positioning bead 21 is located in another positioning groove 22.
[0072] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.
Claims
1. A camera rotation mechanism for a rotatable connection between a secondary lens module and a camera body, characterized in that, The system includes a guide assembly comprising a fixed cam, a movable cam, and an elastic element. The movable cam is slidably disposed on the rotation axis of the secondary lens module to move closer to or away from the fixed cam. The elastic element is connected to the movable cam and provides a spring force to the movable cam to move toward the fixed cam. One of the fixed cam and the movable cam is connected to the camera body, and the other is connected to the secondary lens module and rotates together with the secondary lens module, such that the fixed cam and the movable cam rotate relative to each other. The region between the fixed cam and the movable cam includes an outer ring region and an inner ring region, with the inner ring region located within the outer ring region. The fixed cam is provided with an outer fixed convex part and an inner fixed convex part, and the movable cam is provided with an outer movable convex part and an inner movable convex part. Both the outer fixed convex part and the outer movable convex part are convex arc-shaped and located in the outer ring region. Both the inner fixed convex part and the inner movable convex part are convex arc-shaped and located in the inner ring region. When the secondary lens module deviates from the preset position, the outer fixed protrusion and the outer movable protrusion abut against each other and are arranged circumferentially. Under the elastic force of the elastic element, the movable cam rotates relative to the fixed cam, causing the inner fixed protrusion and the inner movable protrusion to move closer to each other in the circumferential direction, and causing the secondary lens module to rotate toward the preset position. When the secondary lens module rotates to the preset position, the inner fixed protrusion and the inner moving protrusion abut against each other and are arranged circumferentially. Under the elastic force of the elastic element, the moving cam rotates in the opposite direction to the fixed cam to provide the secondary lens module with a reverse rotational force to move it out of the preset position.
2. The camera rotation mechanism according to claim 1, characterized in that, The guide assembly also includes a central shaft, which is arranged along the rotation axis of the secondary lens module, and the movable cam is slidably disposed on the central shaft; the central shaft passes through the fixed cam, and a limiting part is provided at one end of the central shaft adjacent to the fixed cam to limit the fixed cam on the central shaft.
3. The camera rotation mechanism according to claim 2, characterized in that, The guiding assembly further includes a guide cylinder, which includes a cylinder wall and a cylinder bottom plate. One end of the cylinder wall is open, and the other end is fixedly connected to the cylinder bottom plate. The central shaft is coaxially arranged with the guide cylinder, and one end of the central shaft away from the fixed cam is connected to the cylinder bottom plate. The moving cam and the elastic element are both disposed inside the guide cylinder, and the cylinder wall and the moving cam are circumferentially positioned to allow them to rotate together. The elastic element is a compression spring, which is sleeved on the central shaft, and its two ends abut against the moving cam and the cylinder bottom plate, respectively. The fixed cam includes a cylindrical portion, and the inner surface of the cylinder wall at the open end is a cylindrical surface. The cylindrical portion is located inside the open end of the cylinder wall, and its outer circumferential surface is rotatably engaged with the cylindrical surface.
4. The camera rotation mechanism according to claim 1, characterized in that, The fixed cam is further provided with an inner fixed plane in the inner ring region, and the inner fixed plane and the inner fixed protrusion are connected end to end to form a ring; the movable cam is further provided with an inner movable plane in the inner ring region, and the inner movable plane and the inner movable protrusion are connected end to end to form a ring; when the outer fixed protrusion abuts against the outer movable protrusion, the inner fixed plane and the inner movable protrusion are spaced apart axially, and the inner movable plane and the inner fixed protrusion are spaced apart axially.
5. The camera rotation mechanism according to claim 1, characterized in that, The outer fixed protrusions are two radially opposite parts, namely the first outer fixed protrusion and the second outer fixed protrusion; the outer movable protrusions are two radially opposite parts, namely the first outer movable protrusion and the second outer movable protrusion; the first outer movable protrusion is used to abut against the first outer fixed protrusion, and the second outer movable protrusion is used to abut against the second outer movable protrusion. The vertex of the first outer fixed convex portion is closer to the fixed cam relative to the vertex of the second outer fixed convex portion, and the vertex of the first outer movable convex portion is farther away from the movable cam relative to the vertex of the second outer movable convex portion; when the vertices of the first outer fixed convex portion and the first outer movable convex portion abut, the vertices of the second outer fixed convex portion and the second outer movable convex portion abut. The inner fixed protrusion and the first outer fixed protrusion are arranged radially, and the inner fixed protrusion protrudes axially beyond the first outer fixed protrusion; the inner movable protrusion and the second outer movable protrusion are arranged radially, and the inner movable protrusion protrudes axially beyond the second outer movable protrusion. When the inner moving convex portion abuts against the inner moving convex portion in the circumferential direction, the second outer fixed convex portion abuts against the first outer moving convex portion in the circumferential direction to provide a reverse rotational force to the moving cam.
6. The camera rotation mechanism according to any one of claims 1-5, characterized in that, The camera rotation mechanism also includes a positioning component, which is used to position the secondary lens module and the camera body at a preset position. The positioning component includes a positioning groove and a spring positioning bead. One of the positioning groove and the spring positioning bead is disposed on the camera body and the other is disposed on the secondary lens module. The positioning groove is a concave arc shape that cooperates with the spring positioning bead.
7. The camera rotation mechanism according to claim 6, characterized in that, When the top of the spring positioning bead is located at the edge of the positioning groove, there is no circumferential rotational force between the moving cam and the fixed cam, so that the secondary lens module is driven to rotate to the preset position under the elastic force of the spring positioning bead; when the top of the spring positioning bead moves to the inner edge of the positioning groove, the inner fixed protrusion abuts against the inner moving protrusion.
8. The camera rotation mechanism according to claim 6, characterized in that, There are two positioning slots, which cooperate with the same spring positioning bead to position the secondary lens module and the camera body at two predetermined positions respectively; The positioning component further includes a guide surface connected between the openings of the two positioning slots, and includes a guide plane and two guide ramps; The guide plane is connected between the two guide ramps; in the direction of the rotation axis of the sub-lens module, the guide plane is away from the spring positioning bead relative to the opening of the positioning groove; The two guide ramps are respectively connected to the openings of the two positioning grooves to abut against the spring positioning bead, so as to realize the transition of the spring positioning bead between the guide plane and the positioning groove.
9. The camera rotation mechanism according to claim 6, characterized in that, The guiding component and the positioning component are respectively disposed at opposite ends of the rotation axis of the secondary lens module; The guide component is mounted on the secondary lens module, and the fixed cam is fixedly connected to the camera body. The positioning groove is located on the secondary lens module, and the spring positioning bead is located on the camera body.
10. A multi-functional camera, characterized in that, The camera includes a camera body, a secondary lens module, and a camera rotation mechanism as described in any one of claims 1 to 9, wherein the lens module is rotatably connected to the camera body via the camera rotation mechanism.