Automatic focusing motor integrated with scene switching structure

Abstract

The utility model discloses an automatic focusing motor integrated with a scene switching structure, which comprises an integrated base, the integrated base comprises a motor base and a switching bracket, the upper end of the motor base is provided with a motor body, and the side end of the switching bracket is provided with a scene switching device; the bottom of the switching support is provided with a horizontally-arranged telescopic notch. The scene switching device comprises a loading plate, a cylindrical magnet, a swing arm, a second coil and a U-shaped iron core. A first optical filter and a second optical filter which are adjacent to each other are embedded in the loading plate, the light transmittance of the first optical filter is different from that of the second optical filter, the loading plate is inserted into the telescopic notch, and a swing transverse groove is formed in the side, away from the switching support, of the loading plate; one end of the swing arm is fixedly connected with the cylindrical magnet, the other end of the swing arm is slidably connected into the swing transverse groove, the cylindrical magnet is located in the opening direction of the U-shaped iron core, and the U-shaped iron core is wound and sleeved with the second coil. According to the utility model, structural integration of optical scene switching and automatic zooming is realized.

Description

Technical Field

[0001] This utility model relates to the field of autofocus motor technology, and in particular to an autofocus motor with an integrated scene switching structure. Background Technology

[0002] An autofocus motor is a component in cameras, camcorders, and other optical devices used to automatically adjust the lens focus. Its main function is to detect the sharpness of the subject and automatically adjust the lens position to obtain the sharpest image. The design of an autofocus motor makes the shooting process more convenient, especially in fast-moving scenes or low-light environments, as it can quickly and accurately lock focus, improving shooting efficiency and image quality.

[0003] Currently, existing autofocus motor structures can only automatically adjust the focal length. When the brightness of the external environment changes, they cannot switch filters in time, making the autofocus effect easily affected by the ambient brightness, thus affecting the imaging quality of optical equipment. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide an autofocus motor with an integrated scene switching structure, which integrates optical scene switching and automatic zoom to improve optical imaging quality.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an autofocus motor with an integrated scene switching structure, comprising an integrated base, wherein the integrated base comprises a motor base and a switching bracket integrally connected from top to bottom, the upper end of the motor base is provided with a motor body, and the side end of the switching bracket is provided with a scene switching device;

[0006] The motor body includes a motor housing, a motor magnet, an upper spring, a lower spring, a motor carrier, and a first coil. The motor magnet is disposed inside the motor housing. The upper spring, the lower spring, and the motor carrier are all disposed inside the motor magnet. The outer side of the upper spring is fixedly connected to the upper inner end of the motor magnet, and the inner side of the upper spring is fixedly connected to the upper end of the motor carrier. The outer side of the lower spring is fixedly connected to the lower inner end of the motor magnet, and the lower end of the motor magnet is also fixedly connected to the motor base. The inner side of the lower spring is fixedly connected to the lower end of the motor carrier. The first coil is sleeved on the outer wall of the motor carrier.

[0007] The bottom of the switching bracket is provided with a horizontally set telescopic slot, and the scene switching device includes a switching shell, a loading plate, a cylindrical magnet, a swing arm, a rotating shaft, a second coil and a U-shaped iron core;

[0008] The loading plate is embedded with adjacent first and second filters, which have different light transmittances. The loading plate is inserted into the telescopic slot, and a swinging transverse slot is provided on the side of the loading plate away from the switching bracket.

[0009] One end of the swing arm is fixedly connected to the cylindrical magnet, and the other end is slidably connected in the swing groove. The cylindrical magnet is located in the opening direction of the U-shaped iron core. The second coil is wound and sleeved on the U-shaped iron core. The cylindrical magnet, the swing arm, the second coil and the U-shaped iron core are all arranged in the switching housing. The cylindrical magnet is fixedly sleeved on the rotating shaft. The upper and lower ends of the rotating shaft are rotatably connected to the inner wall of the switching housing.

[0010] When the second coil is energized, a magnetic field is generated inside the U-shaped iron core, which drives the cylindrical magnet to rotate and causes the swing arm to swing, thereby driving the loading plate to move and switch the positions of the first filter and the second filter.

[0011] Furthermore, the U-shaped iron core has a pair of oppositely arranged arc-shaped curved portions in the opening direction, the curved shape of the arc-shaped curved portions is adapted to the shape of the cylindrical magnet, and a rotation gap is left between the pair of arc-shaped curved portions and the cylindrical magnet.

[0012] Furthermore, each corner of the upper surface of the motor base is provided with a number of spring plate limiting posts, and a number of limiting holes are opened on the lower spring plate. The shape of the spring plate limiting posts is adapted to the shape of the limiting holes, and each spring plate limiting post is inserted into the corresponding limiting hole.

[0013] Furthermore, each corner of the upper surface of the motor base is provided with a magnetic limiting block. The magnetic limiting block is located outside each of the spring limiting posts. The shape of the magnetic limiting block is adapted to the shape of the motor magnet. When the motor magnet is placed on the upper surface of the motor base, each of the magnetic limiting blocks limits the outer side of the motor magnet.

[0014] Furthermore, the scene switching device also includes a loading protective cover, the loading plate is disposed inside the loading protective cover, the shape of the telescopic slot is adapted to the shape of the loading protective cover, and the loading protective cover is inserted into the telescopic slot.

[0015] Furthermore, the loading protective sleeve includes an upper sleeve and a lower sleeve. The upper sleeve has several buckles on its side end, and the lower sleeve has several buckles on its side end. The buckles are fastened into the buckles.

[0016] Furthermore, the bottom of the switching bracket is provided with several parallel heat dissipation fins, and the heat dissipation fins are wavy in shape.

[0017] The beneficial effects of this utility model are:

[0018] This utility model designs an integrated base consisting of a motor base and a switching bracket, with a motor body on the upper end of the motor base and a scene switching device on the side of the switching bracket. This achieves the structural integration of optical scene switching and automatic zoom, which is beneficial to improving optical imaging quality.

[0019] This invention also utilizes the second coil to generate a magnetic field around the U-shaped iron core after it is energized, which drives the cylindrical magnet to rotate and the swing arm to swing, thereby driving the loading plate to move and switch the positions of the first and second filters, ultimately realizing automatic switching of the optical scene. The structure is simple and the switching efficiency is high. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the internal structure of the autofocus motor that integrates the scene switching structure in this utility model;

[0021] Figure 2 This is a schematic diagram of the external structure of the autofocus motor that integrates the scene switching structure in this utility model.

[0022] Figure 3 This is a schematic diagram of the motor base in this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the protective sleeve in this utility model.

[0024] Reference numerals: 1. Integrated base; 11. Motor base; 12. Switching bracket; 13. Spring-loaded limiting post; 14. Magnet limiting block; 2. Motor body; 21. Motor housing; 22. Motor magnet; 23. Upper spring-loaded piece; 24. Lower spring-loaded piece; 25. Motor carrier; 3. Scene switching device; 31. Switching housing; 32. Loading plate; 33. Cylindrical magnet; 34. Swing arm; 35. Rotating shaft; 36. Second coil; 37. U-shaped iron core; 38. First filter; 39. Second filter; 4. Arc-shaped bending part; 5. Loading protective cover; 51. Upper cover; 52. Lower cover; 53. Buckle; 54. Buckle ring. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0026] Example 1, referring to Figure 1 and Figure 2 This is the first embodiment of the present invention. This embodiment provides an autofocus motor with an integrated scene switching structure, which can realize the structural integration of optical scene switching and autofocus, and improve the optical imaging quality. It includes an integrated base 1, which includes a motor base 11 and a switching bracket 12 connected in one piece from top to bottom. The upper end of the motor base 11 is provided with a motor body 2, and the side end of the switching bracket 12 is provided with a scene switching device 3.

[0027] The motor body 2 includes a motor housing 21, a motor magnet 22, an upper spring 23, a lower spring 24, a motor carrier 25, and a first coil (not shown in the figure). The motor magnet 22 is disposed inside the motor housing 21. The upper spring 23, the lower spring 24, and the motor carrier 25 are all disposed inside the motor magnet 22. The outer side of the upper spring 23 is fixedly connected to the upper end of the motor magnet 22. The inner side of the upper spring 23 is fixedly connected to the upper end of the motor carrier 25. The outer side of the lower spring 24 is fixedly connected to the lower end of the motor magnet 22. The lower end of the motor magnet 22 is also fixedly connected to the motor base 11. The inner side of the lower spring 24 is fixedly connected to the lower end of the motor carrier 25. The first coil is sleeved on the outer wall of the motor carrier 25.

[0028] The bottom of the switching bracket 12 is provided with a horizontally set telescopic slot. The scene switching device 3 includes a switching housing 31, a loading plate 32, a cylindrical magnet 33, a swing arm 34, a rotating shaft 35, a second coil 36, and a U-shaped iron core 37.

[0029] The loading plate 32 is embedded with adjacent first filter 38 and second filter 39. The first filter 38 and second filter 39 have different light transmittance. The loading plate 32 is inserted into the telescopic slot. The side of the loading plate 32 away from the switching bracket 12 is provided with a swing cross slot.

[0030] One end of the swing arm 34 is fixedly connected to a cylindrical magnet 33, and the other end is slidably connected in the swing groove. The cylindrical magnet 33 is located in the opening direction of the U-shaped iron core 37. The second coil 36 is wound and sleeved on the U-shaped iron core 37. The cylindrical magnet 33, the swing arm 34, the second coil 36 and the U-shaped iron core 37 are all arranged in the switching housing 31. The cylindrical magnet 33 is fixedly sleeved on the rotating shaft 35. The upper and lower ends of the rotating shaft 35 are rotatably connected to the inner wall of the switching housing 31.

[0031] When the second coil 36 is energized, a magnetic field is generated in the U-shaped iron core 37, which drives the cylindrical magnet 33 to rotate, causing the swing arm 34 to swing, thereby driving the loading plate 32 to move and switch the positions of the first filter 38 and the second filter 39.

[0032] Specifically, in this embodiment, the first filter 38 can be an infrared cut-off filter, and the second filter 39 can be a full-spectrum optical lens. The first filter 38 is used when there is sufficient light to filter out infrared rays, and the second filter 39 is used when there is insufficient light.

[0033] Working principle of Example 1:

[0034] The automatic zoom principle of motor body 2:

[0035] The lens assembly is located in the middle of the motor carrier 25. When the first coil is energized, it generates a magnetic field. Under the influence of the magnetic field of the motor magnet 22, the lens assembly is driven by the motor carrier 25 to move up and down in the vertical direction, thereby achieving automatic zoom.

[0036] The working principle of scene switching device 3:

[0037] When the second coil 36 is energized, a magnetic field is generated around the U-shaped iron core 37. Under the limiting effect of the rotating shaft 35, the cylindrical magnet 33 can only rotate after the external magnetic field changes. Since the swing arm 34 is fixedly connected to the cylindrical magnet 33, one end of the swing arm 34 is driven to swing by the cylindrical magnet 33, and the other end of the swing arm 34 swings in an arc shape, thereby driving the loading plate 32 to move back and forth to switch the positions of the first filter 38 and the second filter 39, ultimately realizing automatic switching of the optical scene. The structure is simple and the switching efficiency is high. The energizing direction of the second coil 36 can be changed, thereby changing the rotation direction of the cylindrical magnet 33, changing the swing direction of the swing arm 34, and ultimately changing the moving direction of the loading plate 32.

[0038] In this embodiment, an integrated base 11 and a switching bracket 12 are designed as an integrated base 1, and a motor body 2 is set on the upper end of the motor base 11. A scene switching device 3 is provided on the side end of the switching bracket 12, realizing the structural integration of optical scene switching and automatic zoom, which is beneficial to improving the optical imaging quality.

[0039] Example 2, refer to Figure 1 This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a pair of arc-shaped bending portions 4, which can improve the magnetic field quality generated by the U-shaped iron core 37 and ensure the rotation effect of the cylindrical magnet 33. The U-shaped iron core 37 has a pair of arc-shaped bending portions 4 arranged opposite to each other in the opening direction. The bending shape of the arc-shaped bending portions 4 is adapted to the shape of the cylindrical magnet 33. A rotation gap is left between the pair of arc-shaped bending portions 4 and the cylindrical magnet 33.

[0040] Working principle of Example 2:

[0041] After the second coil 36 is energized, a magnetic field is generated around the U-shaped iron core 37. Since the U-shaped iron core 37 has a pair of arc-shaped curved parts 4 that are adapted to the shape of the cylindrical magnet 33 in the opening direction, the magnetic field generated around the cylindrical magnet 33 is more in line with the shape of the cylindrical magnet 33, and the magnetic field quality is improved, so that the rotation effect of the cylindrical magnet 33 when driven by magnetic force is better.

[0042] Example 3, referring to Figure 3 This is the third embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a spring-loaded limiting post 13 and a magnetic limiting block 14, which can improve the stability of the connection structure between the lower spring 24 and the motor base 11. Several spring-loaded limiting posts 13 are provided at each corner of the upper surface of the motor base 11. Several limiting holes are opened on the lower spring 24. The shape of the spring-loaded limiting post 13 is adapted to the limiting hole. Each spring-loaded limiting post 13 is inserted into the corresponding limiting hole.

[0043] Magnetic limiting blocks 14 are also provided at each corner of the upper surface of the motor base 11. The magnetic limiting blocks 14 are located outside each spring limiting post 13. The shape of the magnetic limiting blocks 14 is adapted to the shape of the motor magnet 22. When the motor magnet 22 is placed on the upper end of the motor base 11, each magnetic limiting block 14 limits the outer side of the motor magnet 22.

[0044] Working principle of Example 3:

[0045] By setting the spring plate limiting post 13 and the limiting hole, the lower spring plate 24 can be inserted into the limiting hole of the motor base 11 through the spring plate limiting post 13, thereby improving the stability of the connection structure between the lower spring plate 24 and the motor base 11.

[0046] In addition, by setting magnetic limiting blocks 14 at each corner of the upper surface of the motor base 11, the outer side of the motor magnet 22 is limited by each magnetic limiting block 14, which further improves the stability of the connection structure between the lower spring 24 and the motor base 11.

[0047] Preferred, such as Figure 4 As shown, the scene switching device 3 also includes a loading protective sleeve 5. The loading plate 32 is set inside the loading protective sleeve 5. The shape of the telescopic slot is adapted to the shape of the loading protective sleeve 5, and the loading protective sleeve 5 is inserted into the telescopic slot.

[0048] Specifically, in this embodiment, by setting the loading protective sleeve 5, external protection of the loading plate 32 is achieved, thereby improving the durability of the loading plate 32.

[0049] Preferably, the protective cover 5 includes an upper cover 51 and a lower cover 52. The upper cover 51 has several buckles 53 on its side end, and the lower cover 52 has several buckles 54 on its side end. The buckles 53 are fastened to the buckles 54.

[0050] Specifically, in this embodiment, a detachable connection between the upper shell 51 and the lower shell 52 is achieved by providing several buckles 53 on the side of the upper shell 51 and several buckles 54 on the side of the lower shell 52.

[0051] Preferably, the bottom of the switching bracket 12 is provided with several parallel heat dissipation fins, and the heat dissipation fins are wavy in shape.

[0052] Specifically, in this embodiment, by setting heat dissipation fins at the bottom of the switching bracket 12, a set of heat dissipation fins is used to achieve synchronous heat dissipation of the motor body 2 and the scene switching device 3, achieving a high-return heat dissipation effect at low cost.

[0053] In addition, in this embodiment, the shape of the heat dissipation fins is set to a wave shape, which increases the contact area between the heat dissipation fins and the air and improves the heat dissipation effect.

[0054] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. An autofocus motor with an integrated scene switching structure, characterized in that, It includes an integrated base (1), which includes a motor base (11) and a switching bracket (12) that are integrally connected from top to bottom. The upper end of the motor base (11) is provided with a motor body (2), and the side end of the switching bracket (12) is provided with a scene switching device (3). The motor body (2) includes a motor housing (21), a motor magnet (22), an upper spring (23), a lower spring (24), a motor carrier (25), and a first coil. The motor magnet (22) is disposed inside the motor housing (21). The upper spring (23), the lower spring (24), and the motor carrier (25) are all disposed inside the motor magnet (22). The outer side of the upper spring (23) is fixedly connected to the upper end of the motor magnet (22). The inner side of the upper spring (23) is fixedly connected to the upper end of the motor carrier (25). The outer side of the lower spring (24) is fixedly connected to the lower end of the motor magnet (22). The lower end of the motor magnet (22) is also fixedly connected to the motor base (11). The inner side of the lower spring (24) is fixedly connected to the lower end of the motor carrier (25). The first coil is sleeved on the outer wall of the motor carrier (25). The bottom of the switching bracket (12) is provided with a horizontally set telescopic slot. The scene switching device (3) includes a switching shell (31), a loading plate (32), a cylindrical magnet (33), a swing arm (34), a rotating shaft (35), a second coil (36), and a U-shaped iron core (37). The loading plate (32) is embedded with an adjacent first filter (38) and second filter (39). The first filter (38) and the second filter (39) have different light transmittances. The loading plate (32) is inserted into the telescopic slot. The loading plate (32) has a swing cross slot on the side away from the switching bracket (12). One end of the swing arm (34) is fixedly connected to the cylindrical magnet (33), and the other end is slidably connected in the swing groove. The cylindrical magnet (33) is located in the opening direction of the U-shaped iron core (37). The second coil (36) is wound and sleeved on the U-shaped iron core (37). The cylindrical magnet (33), the swing arm (34), the second coil (36) and the U-shaped iron core (37) are all arranged in the switching housing (31). The cylindrical magnet (33) is fixedly sleeved on the rotating shaft (35). The upper and lower ends of the rotating shaft (35) are rotatably connected to the inner wall of the switching housing (31). When the second coil (36) is energized, a magnetic field is generated in the U-shaped iron core (37), which drives the cylindrical magnet (33) to rotate and causes the swing arm (34) to swing, thereby driving the loading plate (32) to move and switch the positions of the first filter (38) and the second filter (39).

2. The autofocus motor with an integrated scene switching structure according to claim 1, characterized in that: The U-shaped iron core (37) has a pair of oppositely arranged arc-shaped curved parts (4) in the opening direction. The curved shape of the arc-shaped curved parts (4) is adapted to the shape of the cylindrical magnet (33). A rotation gap is left between the pair of arc-shaped curved parts (4) and the cylindrical magnet (33).

3. The autofocus motor with an integrated scene switching structure according to claim 1, characterized in that: Each corner of the upper surface of the motor base (11) is provided with a number of spring plate limiting posts (13), and a number of limiting holes are opened on the lower spring plate (24). The shape of the spring plate limiting post (13) is adapted to the shape of the limiting hole, and each spring plate limiting post (13) is inserted into the corresponding limiting hole.

4. The autofocus motor with an integrated scene switching structure according to claim 3, characterized in that: The upper surface of the motor base (11) is provided with magnetic limiting blocks (14) at each corner. The magnetic limiting blocks (14) are located outside each of the spring limiting posts (13). The shape of the magnetic limiting blocks (14) is adapted to the shape of the motor magnet (22). When the motor magnet (22) is placed on the upper end of the motor base (11), each of the magnetic limiting blocks (14) limits the outer side of the motor magnet (22).

5. The autofocus motor with an integrated scene switching structure according to claim 1, characterized in that: The scene switching device (3) also includes a loading protective sleeve (5), the loading plate (32) is disposed inside the loading protective sleeve (5), the shape of the telescopic slot is adapted to the shape of the loading protective sleeve (5), and the loading protective sleeve (5) is inserted into the telescopic slot.

6. The autofocus motor with an integrated scene switching structure according to claim 5, characterized in that: The loading protective sleeve (5) includes an upper sleeve (51) and a lower sleeve (52). The upper sleeve (51) has several buckles (53) on its side end, and the lower sleeve (52) has several buckles (54) on its side end. The buckles (53) are fastened to the buckles (54).

7. The autofocus motor with an integrated scene switching structure according to claim 1, characterized in that: The bottom of the switching bracket (12) is provided with several parallel heat dissipation fins, and the heat dissipation fins are wavy in shape.

Images