A zoomable camera module

Abstract

This utility model relates to the field of optical imaging technology and discloses a zoomable camera module, including a circuit board. An auxiliary mechanism is fixedly connected to the bottom of the circuit board, and an adjustment mechanism is provided at the top of the circuit board for mechanical zoom. A connecting mechanism is fixedly connected to the top of the circuit board near its edge to prevent compression when connecting other mechanisms. The adjustment mechanism includes a lens, the bottom of which is disposed at the top of the circuit board. A dustproof box is fixedly connected to the outer wall of the lens, and a mounting assembly is slidably connected to the inner wall of the lens. In this utility model, by activating a micro motor to drive the rotating shaft to rotate in both directions, the transmission block can contact the chamfered sides of the upper and lower trapezoidal blocks respectively, achieving mechanical zoom while avoiding shaking during use through multi-directional guidance, thus improving practicality and reducing operating costs.

Description

Technical Field

[0001] This utility model relates to the field of optical imaging technology, and in particular to a variable zoom camera module. Background Technology

[0002] The structure of a camera module includes several lenses, which can be divided into glass lenses and plastic lenses; a lens responsible for receiving light signals and focusing them onto a photosensitive device; and a semiconductor chip with hundreds of thousands to millions of photodiodes on its surface. When exposed to light, the photodiodes generate charges, converting the light into electrical signals, which are then converted into digital signals by an internal sensor. Light from an object passing through the lens is collected, and through an integrated circuit, the light signals are converted into electrical signals. These electrical signals are then converted into digital image signals by an internal image processor and output to a digital signal processor for further processing. Finally, the signals are converted into image signals in various standard formats. With the trend towards thinner and lighter smartphones, camera modules need to continuously reduce their size and thickness while ensuring that image quality and functionality are not affected. This places higher demands on lens design and packaging technology.

[0003] A search revealed Chinese Patent Publication No. CN213581544U, which discloses a camera module comprising a housing with a cavity, a lens assembly disposed within the cavity, an elastic support member for connecting the lens assembly and the housing, and an image stabilization drive member disposed within the cavity for driving the lens assembly to move. The housing has a through hole corresponding to the lens assembly, and the image stabilization drive member is disposed on the side of the lens assembly away from the through hole, comprising a coil and magnets corresponding to and spaced apart from the coil. This invention provides a camera module that not only reduces its width dimension but also eliminates the need for an internal support structure. However, for achieving clear focus at both near and far distances, using a combination of a far-field camera module and a near-field camera module would increase costs and occupy more space. Furthermore, traditional VCM solutions produce shake during near and far-field focusing, reducing practicality and increasing operating costs. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a variable zoom camera module, which aims to improve the existing camera modules. The traditional VCM solution will produce shaking when focusing on distant and near scenes. Using a combination of a distant camera module and a close-up camera module increases the cost, resulting in reduced practicality and higher usage costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a variable zoom camera module, including a circuit board, an auxiliary mechanism fixedly connected to the bottom of the circuit board, an adjustment mechanism provided at the top of the circuit board, the adjustment mechanism being used for mechanical zoom, and a connecting mechanism fixedly connected to the top of the circuit board near the edge, the connecting mechanism being used to avoid squeezing when connecting other mechanisms; The adjustment mechanism includes a lens, the bottom of which is located on the top of the circuit board. A dustproof box is fixedly connected to the outer wall of the lens, and an installation component is slidably connected to the inner wall of the lens. A guide component is located on the left side of the lens. A micro motor is fixedly connected to the inner wall of the dustproof box, and a rotating shaft is fixedly connected to the output end of the micro motor. A second rotating column is rotatably connected to the outer wall of the rotating shaft, and a first rotating column is rotatably connected to the top of the rotating shaft. A transmission block is fixedly connected to the middle of the outer wall of the rotating shaft. An arc-shaped circulation groove is formed on the outer walls of both the first and second rotating columns. A one-way toggle component is provided between adjacent sections of the second and first rotating columns.

[0006] Through the above technical solution: when rotating column one and rotating column two rotate, the one-way actuation component will move along the arc-shaped circulation groove, and during the movement, it can slide the mounting component in one direction. When the micro motor starts, it drives the rotating shaft to rotate, and then transmits the power to rotating column one and rotating column two through the transmission block, so that they also start to rotate. The dust box wraps the lens, effectively preventing dust and other particles from entering the lens, ensuring the cleanliness of the lens and the stability of its optical performance.

[0007] As a further description of the above technical solution: The connecting mechanism includes a fixed block, a sliding block is slidably connected to the inner wall of the fixed block, a limit groove is formed on the top of the sliding block, limit components are fixedly connected to the front and rear sides of the outer wall of the lens, and multiple fixed plates are fixedly connected to the outer wall of the lens near the edge, with positioning grooves formed on the inner wall of the fixed plates.

[0008] Through the above technical solution: the fixing block can be inserted into the positioning groove, thereby limiting the position of the fixing plate; the sliding block can be pulled outward from the inner wall of the fixing block, thereby initially limiting the position between the fixing plate and the fixing block.

[0009] As a further description of the above technical solution: The limiting component includes a support block, the outer wall of which is fixedly connected to the front and rear sides of the outer wall of the lens, and a lead screw is threadedly connected to the inner wall of the support block, with the bottom end of the lead screw rotatably connected to a limiting block.

[0010] The above technical solution involves a support block that supports the rotation of the lead screw on its inner wall. The rotation of the lead screw can cause it to move downwards, thereby pushing the limit block downwards.

[0011] As a further description of the above technical solution: The auxiliary mechanism includes a support plate, the top of which is fixedly connected to the bottom of the circuit board. Mounting holes are provided at the four corners of the inner wall of the support plate, and the top four corners of the circuit board are fixedly connected to the heat spreader plate.

[0012] The above technical solution involves a support plate for supporting the installation of the circuit board and preventing wear caused by contact between the circuits at its bottom and the mounting surface, and a heat dissipation plate for dissipating the heat generated by the circuit board during operation.

[0013] As a further description of the above technical solution: The one-way actuation assembly includes a slide groove, which is disposed between adjacent rotating column one and rotating column two. A trapezoidal block is slidably connected to the inner wall of the slide groove, and springs are fixedly connected to the opposite sides of the trapezoidal blocks.

[0014] The above technical solution involves a groove that guides the trapezoidal block to slide along its inner wall, while a spring that pushes the trapezoidal block to slide back to its original position.

[0015] As a further description of the above technical solution: The mounting assembly includes a lens mount ring one, the outer wall of which is slidably connected to the inner wall of the lens, and a lens mount ring two is slidably connected to the lower side of the inner wall of the lens.

[0016] Through the above technical solutions, both lens mount ring one and lens mount ring two are used to install lenses.

[0017] As a further description of the above technical solution: The guiding component includes a guide groove one, which is disposed on the upper middle side of the outer wall of the lens, and a guide groove two is provided in the middle of the outer wall of the lens.

[0018] Through the above technical solution: guide groove one is used to guide the movement of mirror mount ring one, and guide groove two is used to guide the movement of mirror mount ring two.

[0019] As a further description of the above technical solution: The inner wall of the arc-shaped circulation groove is slidably connected to the outer walls of mirror base ring one and mirror base ring two near the edge, and the outer wall of rotating column one is fixedly connected to the outer wall of mirror base ring one.

[0020] Through the above technical solution, the arc-shaped circulation groove can rotate and drive the mirror base ring one and mirror base ring two to move up and down in a circular motion respectively.

[0021] 1. In this utility model, by starting a micro motor to drive the rotating shaft to rotate in both directions, the transmission block can contact the chamfered sides of the upper and lower trapezoidal blocks respectively, thereby squeezing the spring and causing it to retract into the slide groove, thereby actuating the non-chamfered side of the trapezoidal block on the other side, thereby driving the rotating column one or rotating column two to rotate, thereby driving the lens mount ring one or lens mount ring two to move up and down in a circular motion through the arc-shaped circulation groove. This achieves mechanical zoom while avoiding the problem of shaking during use through multi-directional guidance, improving practicality and reducing the cost of use.

[0022] 2. In this utility model, by aligning the fixing block with the positioning groove, the fixing plate is fitted onto the outer wall of the fixing block. Then, the sliding block is pulled out from the fixing block to initially limit the position of the fixing plate. Subsequently, the screw is rotated to drive the limiting block to move down along the support block until the limiting block is inserted into the limiting groove, thus limiting the position of the sliding block. This achieves the purpose of quick connection and avoids the squeezing damage to the circuit board that is easily caused by screw connection, thereby improving practicality and product quality. Attached Figure Description

[0023] Figure 1 This is a front perspective view of a variable zoom camera module proposed in this utility model; Figure 2 This is a partial structural breakdown diagram of the limiting block of a variable zoom camera module proposed in this utility model; Figure 3 This is a partial structural diagram of a variable zoom camera module proposed in this utility model; Figure 4 This is a partial structural diagram of a variable zoom camera module proposed in this utility model; Figure 5 This is a partial structural breakdown diagram of the trapezoidal block of a variable-focus camera module proposed in this utility model.

[0024] Legend: 1. Circuit board; 2. Adjustment mechanism; 201. Lens; 202. Dustproof box; 203. Mounting assembly; 2031. Lens mount ring one; 2032. Lens mount ring two; 204. Guide assembly; 2041. Guide groove one; 2042. Guide groove two; 205. Rotating column one; 206. Transmission block; 207. Rotating shaft; 208. Rotating column two; 209. Micro motor; 210. One-way actuation assembly; 2101. 211. Slide groove; 2102. Spring; 2103. Trapezoidal block; 3. Connecting mechanism; 301. Fixing plate; 302. Positioning groove; 303. Fixing block; 304. Sliding block; 305. Limiting component; 3051. Support block; 3052. Limiting block; 3053. Lead screw; 306. Limiting groove; 4. Auxiliary mechanism; 401. Support plate; 402. Mounting hole; 403. Heat dissipation plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see the appendix Figure 3 Appendix Figure 4 and attached Figure 5 The present invention provides an embodiment of a variable zoom camera module, including a circuit board 1, an auxiliary mechanism 4 fixedly connected to the bottom of the circuit board 1, an adjustment mechanism 2 provided on the top of the circuit board 1, the adjustment mechanism 2 being used for mechanical zoom, and a connecting mechanism 3 fixedly connected to the top of the circuit board 1 near the edge, the connecting mechanism 3 being used to avoid squeezing when connecting other mechanisms. The adjustment mechanism 2 includes a lens 201, the bottom of which is located at the top of the circuit board 1. A dustproof box 202 is fixedly connected to the outer wall of the lens 201 to prevent external dust from entering the lens 201 through gaps. A mounting assembly 203 is slidably connected to the inner wall of the lens 201. A guide assembly 204 is located on the left side of the lens 201. A micro motor 209 is fixedly connected to the inner wall of the dustproof box 202. The circuit board 1 is used to transmit electrical signals. A rotating shaft 207 is fixedly connected to the output end of the micro motor 209. A second rotating column 208 is rotatably connected to the outer wall of the rotating shaft 207. A first rotating column 205 is rotatably connected to the top of the rotating shaft 207. The rotating shaft 207 is used to transmit the power of the micro motor 209. A transmission block 206 is fixedly connected to the middle of the outer wall of the rotating shaft 207. Arc-shaped circulation grooves 21 are opened on the outer walls of both the first rotating column 205 and the second rotating column 208. 1. An arc-shaped circulation groove 211 is used to guide the remaining structures to circulate within it. A one-way actuation assembly 210 is provided between adjacent rotating columns 208 and 205. The one-way actuation assembly 210 includes a slide groove 2101, which is located between adjacent rotating columns 205 and 208. A trapezoidal block 2103 is slidably connected to the inner wall of the slide groove 2101. The slide groove 2101 is used to guide the trapezoidal block 2103 within its... The inner sliding mechanism has multiple trapezoidal blocks 2103 with springs 2102 fixedly connected to the opposite sides. The mounting assembly 203 includes a lens mount ring 1 2031. The springs 2102 can push the trapezoidal blocks 2103 to slide and reset. The outer wall of the lens mount ring 1 2031 is slidably connected to the inner wall of the lens 201. A lens mount ring 2032 is slidably connected to the lower middle side of the inner wall of the lens 201. Both the lens mount ring 1 2031 and the lens mount ring 2032 are used to mount the lens. Specifically, the dust box 202 encloses the gaps in the outer wall of the lens 201, effectively preventing dust and other contaminants from entering the lens 201, ensuring the cleanliness of the lens 201 and the stability of its optical performance, thereby ensuring that the captured images are clear and free of impurities. Lens mount ring 1 2031 and lens mount ring 2032 are mainly used to install and fix some optical components, ensuring that these components are accurately and stably positioned within the lens 201. Lens mount ring 2032 and lens mount ring 1 2031 work together to provide stable support for the optical components, and during zooming, the focal length is adjusted by the relative sliding of the two. Spring 2102 provides a certain elastic force to trapezoidal block 2103, allowing it to slide and return flexibly within the slide groove 2101.

[0027] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 5 The connecting mechanism 3 includes a fixed block 303, and a sliding block 304 is slidably connected to the inner wall of the fixed block 303. The fixed block 303 can provide guidance for the sliding of the sliding block 304. A limiting groove 306 is opened on the top of the sliding block 304. Limiting components 305 are fixedly connected to the front and rear sides of the outer wall of the lens 201. The limiting groove 306 is used to engage with other structures. Multiple fixing plates 301 are fixedly connected to the outer wall of the lens 201 near the edge. The inner wall of the fixing plate 301 is provided with a positioning groove 302, which can engage with the fixing block 303. The limiting component 305 includes a support block 3051. The outer wall of the support block 3051 is fixedly connected to the front and rear sides of the outer wall of the lens 201. The inner wall of the support block 3051 is threadedly connected to a lead rod 3053. The support block 3051 provides a fulcrum for the rotation of the lead rod 3053. The bottom end of the lead rod 3053 is rotatably connected to the limiting block 3052. The rotation of the lead rod 3053 can push the limiting block 3052 to move up and down. Specifically, by rotating the lead screw 3053, it can be moved downwards, causing the limiting block 3052 to enter the limiting groove 306. The tight fit between the limiting block 3052 and the limiting groove 306 can limit the movement range of the sliding block 304. This limiting method also has a certain elastic buffer space, which can absorb external impact to a certain extent and protect the internal structure of the camera module from damage. The fixing block 303 can be inserted into the inner wall of the positioning groove 302, and then the sliding block 304 can be pulled out from the inner wall of the fixing block 303, thereby making a preliminary connection between the fixing plate 301 and the fixing block 303.

[0028] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3The auxiliary mechanism 4 includes a support plate 401. The top of the support plate 401 is fixedly connected to the bottom of the circuit board 1. The support plate 401 can prevent the circuit at the bottom of the circuit board 1 from contacting the mounting surface. Mounting holes 402 are provided at the four corners of the inner wall of the support plate 401. The top four corners of the circuit board 1 are fixedly connected to the heat spreader 403. The mounting holes 402 are used to connect the support plate 401 and the mounting surface. Specifically, when an electronic component generates heat, the heat is first transferred to the surface of the circuit board 1 in contact with it, and then rapidly transferred to the heat spreader 403 via thermal conduction. The heat-conducting medium inside the heat spreader 403 flows rapidly in the microchannels, carrying heat from the high-temperature area to the low-temperature area. The support plate 401 forms an isolation barrier between the circuit board 1 and the mounting surface, preventing the circuitry at the bottom of the circuit board 1 from directly contacting the mounting surface, thereby preventing damage to the circuitry due to poor conditions of the mounting surface.

[0029] Please see the appendix Figure 2 Appendix Figure 3 and attached Figure 4 The guide assembly 204 includes a guide groove 2041, which is located on the upper side of the outer wall of the lens 201. A guide groove 2042 is provided in the middle of the outer wall of the lens 201. Both guide grooves 2041 and 2042 are used to guide the lens mount ring 2031 and the lens mount ring 2032 to slide within them. The inner wall of the arc-shaped circulation groove 211 is slidably connected to the outer wall of the lens mount ring 2031 and the lens mount ring 2032 near the edge. The outer wall of the rotating column 205 is fixedly connected to the outer wall of the lens mount ring 2031. The arc-shaped circulation groove 211 can guide the lens mount ring 2031 and the lens mount ring 2032 to move up and down along its inner wall in a circular motion. Specifically, the arc-shaped circulation groove 211 guides the lens mount rings 2031 and 2032 to move up and down along its inner wall in a circular motion, allowing them to move to a suitable position and thus achieve a wider range of focal length adjustment. In actual operation, when zooming is required, the lens mount rings 2031 and 2032 slide along guide grooves 2041 and 2042 under the influence of the surrounding structures. Guide grooves 2041 and 2042, through their shape and structure, restrict the movement trajectory of the lens mount rings.

[0030] Working principle: First, the lens is loaded into the lens mount ring 2031 and the lens mount ring 2031 respectively. Then, the micro motor 209 is started to rotate clockwise to drive the rotating shaft 207 to rotate, which in turn drives the transmission block 206 to rotate. At this time, the chamfered side of the transmission block 206 contacts the chamfered side of the top trapezoidal block 2103, thereby squeezing the trapezoidal block 2103 and causing its compression spring 2102 to retract into the slide groove 2101. At the same time, the non-chamfered side of the bottom of the rotating shaft 207 contacts the non-chamfered side of the bottom trapezoidal block 2103, thereby actuating the rotating column 208 to rotate. This causes the lens mount ring 2032, which is slidably connected to the arc-shaped circulation groove 211 on its outer wall, to move up and down along the guide groove 2042 to adjust the distance between it and the lens mount ring 2031. The micro motor 209 is started to rotate counterclockwise, which drives the rotating column 205 to rotate and adjust the position of the lens mount ring 2031. When it is necessary to connect the lens 201 and the circuit board 1, firstly, align the positioning groove 302 in the fixing plate 301 with the fixing block 303, so that the inner wall of the positioning groove 302 fits onto the outer wall of the fixing block 303. Then, pull the sliding block 304 to initially limit the position of the fixing block 303 and the fixing plate 301. Then, rotate the lead screw 3053 to gradually push the limiting block 3052 down along the support block 3051 and rotate the limiting block 3052 to align it with the limiting groove 306. Then, insert the limiting block 3052 into the limiting groove 306 to complete the limiting between the support block 3051 and the sliding block 304, thereby limiting the position of the fixing block 303 and avoiding damage to the circuit board 1 caused by the squeezing during screw installation.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A variable-focus camera module, comprising a circuit board (1), characterized in that: An auxiliary mechanism (4) is fixedly connected to the bottom of the circuit board (1), and an adjustment mechanism (2) is provided on the top of the circuit board (1). The adjustment mechanism (2) is used for mechanical zooming. A connecting mechanism (3) is fixedly connected to the top of the circuit board (1) near the edge. The connecting mechanism (3) is used to avoid squeezing when connecting other mechanisms. The adjustment mechanism (2) includes a lens (201), the bottom of which is disposed at the top of the circuit board (1). A dustproof box (202) is fixedly connected to the outer wall of the lens (201), and a mounting assembly (203) is slidably connected to the inner wall of the lens (201). A guide assembly (204) is disposed on the left side of the lens (201). A micro motor (209) is fixedly connected to the inner wall of the dustproof box (202), and a rotating device is fixedly connected to the output end of the micro motor (209). A shaft (207) is rotatably connected to a rotating column two (208) on its outer wall. A rotating column one (205) is rotatably connected to the top of the rotating shaft (207). A transmission block (206) is fixedly connected to the middle of the outer wall of the rotating shaft (207). An arc-shaped circulation groove (211) is provided on the outer wall of both the rotating column one (205) and the rotating column two (208). A one-way toggle assembly (210) is provided between adjacent rotating columns two (208) and rotating column one (205).

2. The variable zoom camera module according to claim 1, characterized in that: The connecting mechanism (3) includes a fixing block (303), a sliding block (304) is slidably connected to the inner wall of the fixing block (303), a limiting groove (306) is opened on the top of the sliding block (304), a limiting component (305) is fixedly connected to the front and rear sides of the outer wall of the lens (201), and a plurality of fixing plates (301) are fixedly connected to the outer wall of the lens (201) near the edge, and a positioning groove (302) is opened on the inner wall of the fixing plate (301).

3. A variable zoom camera module according to claim 2, characterized in that: The limiting component (305) includes a support block (3051), the outer wall of which is fixedly connected to the front and rear sides of the outer wall of the lens (201), and a lead screw (3053) is threadedly connected to the inner wall of the support block (3051), and a limiting block (3052) is rotatably connected to the bottom end of the lead screw (3053).

4. A variable zoom camera module according to claim 1, characterized in that: The auxiliary mechanism (4) includes a support plate (401), the top of which is fixedly connected to the bottom of the circuit board (1), and mounting holes (402) are provided at the four corners of the inner wall of the support plate (401). The top four corners of the circuit board (1) are fixedly connected to the heat spreader (403).

5. A variable zoom camera module according to claim 1, characterized in that: The one-way toggle assembly (210) includes a slide groove (2101), which is located between adjacent rotating column one (205) and rotating column two (208). A trapezoidal block (2103) is slidably connected to the inner wall of the slide groove (2101), and a spring (2102) is fixedly connected to the opposite side of the multiple trapezoidal blocks (2103).

6. A variable zoom camera module according to claim 1, characterized in that: The mounting assembly (203) includes a lens mount ring one (2031), the outer wall of which is slidably connected to the inner wall of the lens (201), and a lens mount ring two (2032) is slidably connected to the lower side of the inner wall of the lens (201).

7. A variable zoom camera module according to claim 1, characterized in that: The guide assembly (204) includes a guide groove one (2041), which is disposed on the upper side of the outer wall of the lens (201), and a guide groove two (2042) is provided in the middle of the outer wall of the lens (201).

8. A variable zoom camera module according to claim 1, characterized in that: The inner wall of the arc-shaped circulation groove (211) is slidably connected to the outer wall of mirror base ring one (2031) and mirror base ring two (2032) near the edge, and the outer wall of the rotating column one (205) is fixedly connected to the outer wall of mirror base ring one (2031).

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