Camera modules and electronic devices

Abstract

This application discloses a camera module and an electronic device. The camera module includes a base, a photosensitive chip, a first lens barrel, a first lens, a second lens, an active lens barrel, a first bracket, a first driving mechanism, and a second driving mechanism. The photosensitive chip is disposed on the base. The active lens barrel is rotatably connected to the base. The first lens barrel is sleeved on the active lens barrel and connected to it via a first mating protrusion and a first spiral guide groove. The first bracket is movably disposed on the base. The first lens barrel has a first lens, and the first bracket has a second lens, which is located between the photosensitive chip and the first lens. The first driving mechanism is connected to the active lens barrel to drive the first lens barrel to move along a first direction under the cooperation of the first mating protrusion and the first spiral guide groove. The second driving mechanism is connected to the first bracket to drive the first bracket to move along a first direction, which is the direction towards or away from the photosensitive chip.

Description

Technical Field

[0001] This application belongs to the field of camera technology, specifically relating to a camera module and electronic device. Background Technology

[0002] Nowadays, with the continuous improvement of camera technology in electronic devices, people hope to use electronic devices to capture higher quality images.

[0003] In actual shooting, optical zoom can be used to magnify the subject. Optical zoom magnifies the subject by changing the distance between the lens and the subject; therefore, the lens needs to move during zooming. To achieve this movement, a mating protrusion can be set on one lens barrel, and a sliding groove can be set on the other. The protrusion and the sliding groove slide together, thereby achieving relative movement between the two lens barrels, ultimately resulting in the movement of the lens.

[0004] However, in order to make the zoom range of the camera module greater, it is usually necessary to design a multi-level telescopic structure. The various telescopic structures have complex interlocking relationships, which makes the connection structure of each telescopic structure quite complicated. Therefore, the structural design of traditional camera modules is quite difficult. Summary of the Invention

[0005] The purpose of this application is to provide a camera module and electronic device that can solve the problem of the high difficulty in structural design of camera modules.

[0006] To solve the above-mentioned technical problems, this application is implemented as follows:

[0007] In a first aspect, embodiments of this application provide a camera module, which includes a base, a photosensitive chip, a first lens barrel, a first lens, a second lens, an active lens barrel, a first bracket, a first driving mechanism, and a second driving mechanism, wherein:

[0008] The photosensitive chip is disposed on the base, the active lens barrel is rotatably connected to the base, the first lens barrel is sleeved on the active lens barrel, the first lens barrel is connected to the active lens barrel through a first mating protrusion and a first spiral guide groove, the first bracket is movably disposed on the base, the first lens barrel is provided with the first lens, the first bracket is provided with the second lens, and the second lens is located between the photosensitive chip and the first lens.

[0009] The first driving mechanism is connected to the active lens barrel. The first driving mechanism drives the first lens barrel to move along a first direction under the cooperation of the first mating protrusion and the first spiral guide groove. The second driving mechanism is connected to the first bracket. The second driving mechanism drives the first bracket to move along the first direction, which is the direction that is closer to or farther away from the photosensitive chip.

[0010] Secondly, embodiments of this application provide an electronic device that includes the aforementioned camera module.

[0011] In this embodiment, the first driving mechanism can drive the first lens barrel to move under the cooperation of the first mating protrusion and the first spiral guide groove through the active lens barrel, thereby causing the first lens to move closer to or away from the photosensitive chip. The second driving mechanism can drive the first bracket to move, thereby causing the second lens to move closer to or away from the photosensitive chip, thus realizing the zoom of the camera module. This camera module can achieve a good zoom effect through the movement of the first and second lenses. At the same time, the first and second driving mechanisms can independently drive the first and second lenses to move, so neither the first nor the second lens needs to be equipped with an overly complex multi-stage telescopic structure. Therefore, this embodiment can reduce the structural design difficulty of the camera module. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a portion of the structure of the camera module disclosed in the first embodiment of this application;

[0013] Figure 2 for Figure 1 A schematic diagram of the structure shown without the base;

[0014] Figure 3 This is a cross-sectional view of the camera module disclosed in the first embodiment of this application;

[0015] Figure 4 This is an exploded view of a portion of the structure of the camera module disclosed in the first embodiment of this application;

[0016] Figure 5 This is an exploded view of another part of the structure of the camera module disclosed in the first embodiment of this application;

[0017] Figure 6 This is a cross-sectional view of a portion of the structure of the camera module disclosed in the first embodiment of this application;

[0018] Figure 7 This is an exploded view of a portion of the structure of the camera module disclosed in the second embodiment of this application;

[0019] Figure 8 This is a cross-sectional view of a portion of the structure of the camera module disclosed in the second embodiment of this application.

[0020] Explanation of reference numerals in the attached figures:

[0021] 110-Base, 111-Base plate, 120-First lens barrel, 121-First mating protrusion, 130-First lens, 140-Second lens, 150-Active lens barrel, 151-Main body, 152-Transmission component, 153-Mounting component, 154-Second spiral guide groove, 155-First drive groove, 156-Rack, 160-First bracket, 161-First guide, 170-First drive mechanism, 171-Drive source, 172-Worm, 173-Worm wheel, 174-Transmission wheel, 180-Second drive mechanism, 181 - Drive coil, 182 Drive magnet, 183 Reinforcing plate, 190 Second bracket, 191 Second guide part, 192 Extension part, 210 Third lens, 220 First elastic element, 230 Second elastic element, 240 Second lens barrel, 241 First spiral guide groove, 242 First drive protrusion, 243 Second drive protrusion, 250 Driven lens barrel, 251 Second mating protrusion, 252 First limiting straight groove, 253 Second drive groove, 260 Electrical connector, 270 First guide post, 280 Second guide post. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0024] The electronic device provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0025] refer to Figures 1 to 6This application discloses a camera module, which includes a base 110, a photosensitive chip, a first lens barrel 120, a first lens 130, a second lens 140, an active lens barrel 150, a first bracket 160, a first drive mechanism 170, and a second drive mechanism 180.

[0026] A photosensitive chip is mounted on a base 110. Besides the photosensitive chip, the base 110 can also house other components of the camera module. An active lens barrel 150 is rotatably connected to the base 110. A first lens barrel 120 is fitted onto the active lens barrel 150 and is connected to the active lens barrel 150 via a first mating protrusion 121 and a first spiral guide groove 241. Optionally, one of the active lens barrel 150 and the first lens barrel 120 may have the first mating protrusion 121, while the other has the first spiral guide groove 241, allowing the active lens barrel 150 to directly drive the extension and retraction of the first lens barrel 120. The first support 160 is movably disposed on the base 110. The first lens barrel 120 is provided with a first lens 130. The first support 160 is provided with a second lens 140. The second lens 140 is located between the photosensitive chip and the first lens 130. The photosensitive chip can be used to receive light passing through the first lens 130 and the second lens 140, and finally convert the light signal into a digital image signal to obtain an image.

[0027] The first drive mechanism 170 is connected to the active lens barrel 150. The first drive mechanism 170 drives the first lens barrel 120 to move along a first direction through the cooperation of the first mating protrusion 121 and the first spiral guide groove 241. The second drive mechanism 180 is connected to the first support 160. The second drive mechanism 180 drives the first support 160 to move along the first direction, which is the direction of approaching or moving away from the photosensitive chip. In other words, the first drive mechanism 170 can drive the first lens 130 to approach or move away from the photosensitive chip, thereby changing the distance between the first lens 130 and the photosensitive chip; the second drive mechanism 180 can drive the second lens 140 to approach or move away from the photosensitive chip, thereby changing the distance between the second lens 140 and the photosensitive chip. Optionally, the first drive mechanism 170 can output a rotational driving force, which may include components such as a motor; the second drive mechanism 180 can output a telescopic driving force, which may include components such as a telescopic cylinder.

[0028] Optionally, the first drive mechanism 170 may include a drive source 171, a worm gear 172, a worm wheel 173, and a transmission wheel 174. The active lens barrel 150 may be provided with a rack section 156. The output shaft of the drive source 171 is coaxially arranged with the worm gear 172, so the drive source 171 can drive the worm gear 172 to rotate. The worm gear 172 meshes with the worm wheel 173, so the worm gear 172 can drive the worm wheel 173 to rotate. The worm wheel 173 meshes with the transmission wheel 174, so the worm wheel 173 can drive the transmission wheel 174 to rotate. The transmission wheel 174 meshes with the rack section 156, thereby driving the active lens barrel 150 to rotate through the rack section 156. This first drive mechanism 170 has the advantages of simple structure, high transmission accuracy, and long service life.

[0029] In this embodiment, the first driving mechanism 170 can drive the first lens barrel 120 to move under the cooperation of the first mating protrusion 121 and the first spiral guide groove 241 through the active lens barrel 150, thereby causing the first lens 130 to move closer to or further away from the photosensitive chip. The second driving mechanism 180 can drive the first bracket 160 to move, thereby causing the second lens 140 to move closer to or further away from the photosensitive chip, thus realizing the zoom of the camera module. This camera module can achieve a good zoom effect through the movement of the first lens 130 and the second lens 140. At the same time, the first driving mechanism 170 and the second driving mechanism 180 can independently drive the first lens 130 and the second lens 140 to move, respectively. Therefore, the first lens 130 and the second lens 140 do not need to be equipped with an overly complex multi-stage telescopic structure. Thus, this embodiment can reduce the structural design difficulty of the camera module.

[0030] The first drive mechanism 170 and the second drive mechanism 180 can work simultaneously or sequentially. When the first drive mechanism 170 and the second drive mechanism 180 work simultaneously, the positions of the first lens 130 and the second lens 140 can change simultaneously, thereby enabling the camera module to switch to the target state more quickly and thus achieve rapid zoom.

[0031] In an optional embodiment, the second driving mechanism 180 includes a driving coil 181 and a driving magnet 182. One of the base 110 and the first support 160 is equipped with the driving coil 181, and the other with the driving magnet 182. When the driving coil 181 interacts with the driving magnet 182, the first support 160 moves along a first direction. Optionally, the base 110 may include a base plate 111, which may house one of the driving coil 181 and the driving magnet 182. Furthermore, the second driving mechanism 180 may also include a reinforcing plate 183, which is provided on one of the base 110 and the first support 160. The driving coil 181 is disposed on the reinforcing plate 183, thereby improving the structural stability of the driving coil 181. When the driving coil 181 is energized, it generates a magnetic field, which interacts with the magnetic field of the driving magnet 182, thereby generating an Ampere force, causing the driving coil 181 and the driving magnet 182 to move relative to each other. By precisely controlling the current applied to the drive coil 181, the movement of the first bracket 160 can be precisely controlled, thereby precisely controlling the zoom level of the camera module. Since the drive coil 181 and the drive magnet 182 do not need to contact to drive the second lens 140, the wear on the second drive mechanism 180 is less, resulting in a longer service life. Furthermore, the placement of the drive coil 181 and the drive magnet 182 can be flexibly selected, facilitating the structural design of the camera module. In addition, the drive coil 181 and the drive magnet 182 occupy less space, resulting in a simpler structure and further contributing to the miniaturization of the camera module.

[0032] like Figure 7 and Figure 8 As shown, in one embodiment, the base 110 is provided with a driving coil 181, and the first bracket 160 is provided with a driving magnet 182. When the magnetic field generated by the driving coil 181 is in the same direction as the magnetic field of the driving magnet 182, the driving magnet 182 moves away from the driving coil 181, thereby driving the second lens 140 away from the photosensitive chip through the first bracket 160; when the magnetic field generated by the driving coil 181 is in the opposite direction to the magnetic field of the driving magnet 182, the driving magnet 182 moves closer to the driving coil 181, thereby driving the second lens 140 closer to the photosensitive chip through the first bracket 160. In this embodiment, the driving coil 181 can be fixed, thus facilitating the electrical connection design of the driving coil 181.

[0033] like Figure 5 and Figure 6As shown, in another embodiment, the base 110 is provided with a driving magnet 182, and the first bracket 160 is provided with a driving coil 181. When the magnetic field generated by the driving coil 181 is in the same direction as the magnetic field of the driving magnet 182, the driving coil 181 moves away from the driving magnet 182, thereby driving the second lens 140 away from the photosensitive chip through the first bracket 160; when the magnetic field generated by the driving coil 181 is in the opposite direction to the magnetic field of the driving magnet 182, the driving coil 181 moves closer to the driving magnet 182, thereby driving the second lens 140 closer to the photosensitive chip through the first bracket 160. In this embodiment, the driving magnet 182 is fixed. Since the driving coil 181 is usually lighter than the driving magnet 182, the driving force required for the driving coil 181 is smaller, and the power consumption of the camera module is reduced accordingly.

[0034] To provide greater driving force, at least two drive coils 181 and at least two drive magnets 182 can be correspondingly provided. Each drive coil 181 and each drive magnet 182 is arranged around the optical axis, and each drive coil 181 can act in a one-to-one correspondence with each drive magnet 182, thereby providing a larger and more widely distributed force, allowing the first support 160 to move more smoothly. Furthermore, each drive coil 181 is connected to an electrical connector 260, meaning all drive coils 181 are connected to the electrical connector 260, allowing all drive coils 181 to generate a magnetic field, thus producing greater driving force. Optionally, the electrical connector 260 can be a flexible circuit board.

[0035] To extend the zoom range of the camera module, the camera module may further include a second bracket 190 and a third lens 210. The second bracket 190 is movably mounted on the first bracket 160, and the third lens 210 is located between the first lens 130 and the second lens 140. Optionally, a third drive mechanism may be provided on the first bracket 160. This third drive mechanism includes a telescopic cylinder or a coil magnet assembly, or other drive schemes may be used, as long as they can move the second bracket 190 relative to the first bracket 160. Since the distance between the third lens 210 and the first lens 130 and the second lens 140 can vary, a greater zoom magnification can be obtained by moving the third lens 210.

[0036] It should be noted that the number of the first lens 130, the second lens 140 and the third lens 210 can be one or at least two. The specific number of the three can be determined according to the imaging requirements of the camera module. This application embodiment does not limit this.

[0037] In another optional embodiment, the camera module further includes a first elastic element 220, which is disposed between the first bracket 160 and the second bracket 190. The second driving mechanism 180 drives the second bracket 190 to move along a first direction through the first bracket 160 and the first elastic element 220. When the second bracket 190 is subjected to an external force, the first elastic element 220 causes the second bracket 190 to move in a direction closer to the photosensitive chip. When the second driving mechanism 180 applies a force to the first bracket 160, the first bracket 160 moves while the second bracket 190 moves through the first elastic element 220, thereby achieving synchronous movement of the second lens 140 and the third lens 210. When the second bracket 190 is subjected to an external force, the first elastic element 220 can deform to buffer the external force and prevent damage to components such as the first bracket 160 and the second bracket 190 due to the external force. Meanwhile, the first elastic element 220 allows the second support 190 to move relative to the first support 160, thereby changing the distance between the third lens 210 and the second lens 140, thus achieving zoom. This zoom solution has advantages such as simple structure.

[0038] To improve the stability of the first support 160 during movement, the camera module also includes a first guide post 270. In the base 110 and the first support 160, one is provided with a first guide portion 161, and the other is fixedly connected to the first guide post 270, with the first guide portion 161 slidingly engaging with the first guide post 270. In this embodiment, the first guide post 270 can restrict the lateral movement of the first support 160, thereby providing guidance for the movement of the first support 160 and making it move more smoothly. Furthermore, multiple first guide posts 270 can be provided, each corresponding to a multiple first guide portions 161, thereby optimizing the guiding effect.

[0039] To improve the stability of the second bracket 190 during movement, the camera module also includes a second guide post 280. In the first bracket 160 and the second bracket 190, one has a second guide portion 191, and the other is fixedly connected to the second guide post 280. The second guide portion 191 and the second guide post 280 are in sliding engagement. In this embodiment, the second guide post 280 can restrict the lateral movement of the second bracket 190, thereby providing guidance for the movement of the second bracket 190 and making it move more smoothly. Furthermore, multiple second guide posts 280 can be provided, each corresponding to a multiple second guide portions 191, thereby optimizing the guiding effect.

[0040] Both the first guide portion 161 and the second guide portion 191 can be configured as guide holes. In other embodiments, the first bracket 160 has a first guide portion 161 on its edge, which is a guide notch; the second bracket 190 has a second guide portion 191 on its edge, which is a guide hole. Since the first bracket 160 needs to be connected to both the base 110 and the second bracket 190, the structural strength of the first bracket 160 has a significant impact on the lifespan of the camera module. The guide notch can meet the guiding requirements and reduce the amount of material removed from the first bracket 160, thereby improving its structural strength. The second bracket 190 is mainly connected to the first bracket 160, so its structural strength has a smaller impact on the lifespan of the camera module. Configuring the second guide portion 191 as a guide hole avoids making the structural strength of the second guide portion 191 too weak and increases the contact area between the second guide portion 191 and the second guide post 280, thereby improving the guiding effect.

[0041] The connection position between the first elastic member 220 and the second bracket 190 can be offset from the position of the second guide portion 191. However, this arrangement would result in the second bracket 190 being less compact and would increase the structural design difficulty. Therefore, the second bracket 190 has an extension 192 on the side facing the first bracket 160, and the extension 192 has a second guide portion 191. The extension 192 can at least partially extend into the first elastic member 220. In this embodiment, the extension 192 can serve as the connection between the second bracket 190 and the first elastic member 220. Its partial extension into the first elastic member 220 helps to limit the lateral deformation of the first elastic member 220, thus extending its lifespan. Because the extension 192 and the second guide portion 191 are integrated together, the structure of the second bracket 190 is more compact, its structural design is easier, and the second bracket 190 is less likely to encroach on the space of other components, which is more beneficial for the overall layout of the camera module.

[0042] Alternatively, the extension 192 is provided with a countersunk hole, and the second guide 191 can be disposed on the bottom surface of the countersunk hole. Compared to the solution where the second guide 191 extends through the entire extension 192, this embodiment allows the second guide 191 to extend only a portion of the extension 192, and the end of the second guide post 280 away from the first bracket 160 can be closer to the first bracket 160, thereby making the first bracket 160 and the second bracket 190 more compactly distributed, which is beneficial for the miniaturization design of the camera module.

[0043] Optionally, the camera module further includes a second elastic element 230. The active lens barrel 150 includes a separate main body 151 and a transmission element 152. The first end of the second elastic element 230 is connected to the main body 151, and the second end of the second elastic element 230 is connected to the transmission element 152. The first drive mechanism 170 is connected to the transmission element 152. Optionally, the transmission element 152 may be provided with a rack portion 156, through which the first drive mechanism 170 drives the transmission element 152 to rotate. When zooming is required, the first drive mechanism 170 drives the first lens barrel 120 to move along a first direction in sequence through the transmission element 152, the second elastic element 230, and the main body 151. When the first lens barrel 120 is subjected to an external force, the second elastic element 230 causes the first lens barrel 120 to move in the direction closer to the photosensitive chip. Since the main body 151 and the transmission component 152 are separate, their movements can be separated. In other words, the transmission component 152 can transmit driving force to the main body 151 through the second elastic element 230, causing the main body 151 to rotate. When the transmission component 152 does not transmit driving force to the main body 151, the main body 151 can rotate relative to the transmission component 152 under the action of external force.

[0044] With the above structure, when the first lens barrel 120 is in the extended state, if the first lens barrel 120 is subjected to an external force, it will tend to retract. In this case, although the first drive mechanism 170 is not working, the first lens barrel 120 can still move due to the presence of the second elastic element 230. That is, when the first lens barrel 120 is subjected to an external force, the second elastic element 230 causes the first lens barrel 120 to move in the direction closer to the photosensitive chip. When the external force on the first lens barrel 120 disappears, the second elastic element 230 restores its deformation, thereby driving the first lens barrel 120 to return to the extended state through the main body 151. This allows the camera module to continue working with the first lens barrel 120 extended without needing to re-drive the first lens barrel 120 to extend through the first drive mechanism 170. As can be seen, the second elastic member 230 can convert the dynamic potential energy generated by the camera module when it is pressed due to drops, collisions, or human pressure into its own elastic potential energy, thereby achieving a buffering effect. Therefore, the first mating protrusion 121 is not easy to break due to compression, and other components of the camera module are not easy to be impacted. Therefore, this embodiment can extend the life of the camera module.

[0045] When the camera module is equipped with both the first elastic element 220 and the second elastic element 230, once the first lens barrel 120 is subjected to external force, under the action of the second elastic element 230, the first lens barrel 120 moves closer to the photosensitive chip. When the first lens barrel 120 contacts the second bracket 190, the first lens barrel 120 presses down on the second bracket 190, and under the action of the first elastic element 220, the second bracket 190 moves closer to the photosensitive chip. When the external force on the first lens barrel 120 disappears, the first elastic element 220 and the second elastic element 230 simultaneously perform a reset function, causing the first lens barrel 120 and the second bracket 190 to move away from the photosensitive chip. When the second bracket 190 reaches its limit position, the first lens barrel 120 continues to move away from the photosensitive chip until the first lens barrel 120 reaches its limit position.

[0046] In one optional embodiment, the transmission member 152 has a third end and a fourth end, with a gap between them. That is, the transmission member 152 is not a closed annular structure, but rather an arc-shaped component with a notch. Due to the presence of this notch, the second elastic member 230 is fitted onto the transmission member 152 through the notch. In this embodiment, the transmission member 152 is a relatively simple rod-shaped component, and the second elastic member 230 can be directly fitted onto it. Therefore, this embodiment simplifies the structure and assembly of the camera module, reduces the processing cost of the camera module, and allows more space in the camera module to accommodate other components.

[0047] In another optional embodiment, the active lens barrel 150 further includes a mounting member 153, which is separately disposed from the transmission member 152 but connected to it. The second elastic member 230 is sleeved on the mounting member 153, and the transmission member 152 is an annular member. In this embodiment, the second end of the second elastic member 230 is connected to the transmission member 152 through the mounting member 153. Since the second elastic member 230 can be installed through the additionally provided mounting member 153, the structural design of the second elastic member 230 is not easily restricted by the transmission member 152. Therefore, the second elastic member 230 can be designed more flexibly, making the second elastic member 230 more capable of absorbing external forces. Optionally, the mounting member 153 can be an arc-shaped rod-shaped component, thereby facilitating the installation of the second elastic member 230. Meanwhile, the transmission component 152 is a ring-shaped component, which makes the camera module more stable when it moves in extension and retraction. At the same time, the ring-shaped transmission component 152 has higher structural strength, which is not only conducive to transmitting driving force, but also can withstand the force applied by the second elastic component 230, preventing this force from damaging the transmission component 152 and the first drive mechanism 170.

[0048] As mentioned earlier, the active lens barrel 150 can directly drive the first lens barrel 120. In other embodiments, the camera module also includes a second lens barrel 240, which is sleeved on the active lens barrel 150, and the first lens barrel 120 is sleeved on the second lens barrel 240. One of the first lens barrel 120 and the second lens barrel 240 has a first spiral guide groove 241, and the other has a first mating protrusion 121. In this embodiment, both the first lens barrel 120 and the second lens barrel 240 can move in a first direction, thus allowing for a wider range of positional changes of the first lens 130 relative to the photosensitive chip, thereby improving the zoom effect of the camera module.

[0049] Optionally, a straight groove can be provided on the base 110 to restrict the rotation of the first lens barrel 120, so that the first lens barrel 120 can only move in the first direction. However, this embodiment will result in the movement distance of the first lens barrel 120 being limited by the base 110. Therefore, in another embodiment, the camera module also includes a driven lens barrel 250, which is connected to the active lens barrel 150. A second lens barrel 240 is sleeved on the driven lens barrel 250. The driven lens barrel 250 is provided with a second mating protrusion 251, and the active lens barrel 150 is provided with a second spiral guide groove 154. The driven lens barrel 250 can move with the mating of the second mating protrusion 251 and the second spiral guide groove 154. The driven lens barrel 250 is provided with a first limiting straight groove 252 extending along a first direction, and the first lens barrel 120 is provided with a first mating protrusion 121. One end of the first mating protrusion 121 passes through a first spiral guide groove 241 and engages with the first limiting straight groove 252. At the same time, the base 110 is provided with a second limiting straight groove extending along the first direction, and one end of the second mating protrusion 251 passes through a second spiral guide groove 154 and engages with the second limiting straight groove, thereby restricting the rotation of the driven lens barrel 250. The driven lens barrel 250 can restrict the rotation of the first lens barrel 120 through the first limiting straight groove 252. Since the driven lens barrel 250 can move to a position higher than the base 110, the driven lens barrel 250 is less likely to restrict the movement distance of the first lens barrel 120, thereby improving the zoom effect of the camera module.

[0050] The movement of the second lens barrel 240 can also be achieved by the cooperation of the protrusion and the spiral guide groove. However, in order to simplify the structure of the camera module, the active lens barrel 150 is provided with a first drive groove 155 extending along the first direction, and the second lens barrel 240 is provided with a first drive protrusion 242, which cooperates with the first drive groove 155. At the same time, the driven lens barrel 250 is provided with a second drive groove 253 extending along the circumference of the driven lens barrel 250, and the second lens barrel 240 is provided with a second drive protrusion 243, which cooperates with the second drive groove 253. When the active lens barrel 150 rotates, it can drive the driven lens barrel 250 to move along the first direction, and also drive the second lens barrel 240 to rotate. During the movement of the driven lens barrel 250 along the first direction, the second drive protrusion 243 and the second drive groove 253 cooperate to drive the second lens barrel 240 to move along the first direction, thereby realizing the movement and rotation of the second lens barrel 240, so that the second lens barrel 240 can drive the first lens barrel 120 to move. This embodiment does not require a spiral guide groove to achieve the movement of the second lens barrel 240, thus simplifying the structure of the camera module.

[0051] Furthermore, the second drive groove 253 can be configured as an L-shaped groove, so that one end extends to the edge of the driven lens barrel 250, so as to facilitate the assembly of the second lens barrel 240 and the driven lens barrel 250 together.

[0052] Furthermore, since the camera module can achieve a good zoom effect by driving the first lens 130 and the second lens 140 to move through the first driving mechanism 170 and the second driving mechanism 180 respectively, the first spiral guide groove 241 can be set as a straight guide groove, thus simplifying the structure of the first spiral guide groove 241. Similarly, the second spiral guide groove 154 is a straight guide groove, thus simplifying the structure of the second spiral guide groove 154.

[0053] The first mating protrusion 121 can be configured as a cylindrical protrusion, but the mating area between this cylindrical protrusion and the first spiral guide groove 241 is relatively small, causing the first mating protrusion 121 and the first spiral guide groove 241 to be prone to wear. Therefore, in other embodiments, the first mating protrusion 121 is provided with a first mating surface, which fits against the inner wall of the first spiral guide groove 241. In this case, the first mating protrusion 121 and the first spiral guide groove 241 are in surface contact, and the mating area between the two is larger, thereby reducing the wear of the first mating protrusion 121 and the first spiral guide groove 241. At the same time, this structure can also improve the structural strength of the first mating protrusion 121 and the first spiral guide groove 241.

[0054] Similarly, the second mating protrusion 251 is provided with a second mating surface, which fits against the inner wall of the second spiral guide groove 154. Compared with the circular second mating protrusion 251, the first mating protrusion 121 with the second mating surface contacts the first spiral guide groove 241, and the mating area of ​​the two is larger, thereby reducing the wear of the second mating protrusion 251 and the second spiral guide groove 154.

[0055] This application also discloses an electronic device, which includes the camera module in any of the above embodiments.

[0056] The electronic devices disclosed in this application can be smartphones, tablets, e-book readers, wearable devices (such as smartwatches), video game consoles, and other electronic devices. This application does not impose specific limitations on the types of electronic devices.

[0057] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A camera module, characterized in that, It includes a base, a photosensitive chip, a first lens barrel, a first lens element, a second lens element, an active lens barrel, a first support, a first drive mechanism, and a second drive mechanism, wherein: The photosensitive chip is disposed on the base, the active lens barrel is rotatably connected to the base, the first lens barrel is sleeved on the active lens barrel, the first lens barrel is connected to the active lens barrel through a first mating protrusion and a first spiral guide groove, the first bracket is movably disposed on the base, the first lens barrel is provided with the first lens, the first bracket is provided with the second lens, and the second lens is located between the photosensitive chip and the first lens. The first driving mechanism is connected to the active lens barrel. The first driving mechanism drives the first lens barrel to move along a first direction under the cooperation of the first mating protrusion and the first spiral guide groove. The second driving mechanism is connected to the first bracket. The second driving mechanism drives the first bracket to move along the first direction, which is the direction that is closer to or farther away from the photosensitive chip. The camera module further includes a second bracket and a third lens. The second bracket is movably disposed on the first bracket, and the third lens is disposed on the second bracket. The third lens is located between the first lens and the second lens. Both the first bracket and the second bracket are used to realize the zoom of the camera module.

2. The camera module according to claim 1, characterized in that, The second driving mechanism includes a driving coil and a driving magnet. The base and the first bracket are provided with the driving coil and the driving magnet, respectively. When the driving coil interacts with the driving magnet, the first bracket moves along the first direction.

3. The camera module according to claim 2, characterized in that, The number of drive coils is at least two, and each drive coil is connected to an electrical connector.

4. The camera module according to claim 1, characterized in that, The camera module further includes a first elastic element, which is disposed between the first bracket and the second bracket. The second drive mechanism drives the second bracket to move along the first direction via the first bracket and the first elastic element. When the second bracket is subjected to an external force, the first elastic element causes the second bracket to move in a direction closer to the photosensitive chip.

5. The camera module according to claim 4, characterized in that, The camera module further includes a first guide post. Of the base and the first bracket, one has a first guide portion, and the other is fixedly connected to the first guide post. The first guide portion slides in conjunction with the first guide post. The camera module also includes a second guide post. In the first bracket and the second bracket, one is provided with a second guide part, and the other is fixedly connected to the second guide post. The second guide part slides with the second guide post.

6. The camera module according to claim 5, characterized in that, The first bracket has a first guide portion on its edge, which is a guide notch; the second bracket has a second guide portion on its edge, which is a guide hole.

7. The camera module according to claim 6, characterized in that, The second bracket has an extension on the side facing the first bracket, and the extension has a second guide portion. The extension can at least partially extend into the first elastic member.

8. The camera module according to claim 1, characterized in that, The camera module further includes a second elastic element. The active lens barrel includes a separate main body and a transmission element. A first end of the second elastic element is connected to the main body, and a second end of the second elastic element is connected to the transmission element. The first driving mechanism is connected to the transmission element. The first driving mechanism sequentially drives the first lens barrel to move along the first direction via the transmission member, the second elastic member, and the main body member. When the first lens barrel is subjected to an external force, the second elastic element causes the first lens barrel to move in a direction closer to the photosensitive chip.

9. The camera module according to claim 1, characterized in that, The camera module further includes a second lens barrel, which is sleeved on the active lens barrel. The first lens barrel is sleeved on the second lens barrel. One of the first lens barrel and the second lens barrel is provided with the first spiral guide groove, and the other is provided with the first mating protrusion.

10. The camera module according to claim 9, characterized in that, The camera module also includes a driven lens barrel connected to the active lens barrel. A second lens barrel is sleeved outside the driven lens barrel. The driven lens barrel has a second mating protrusion, and the active lens barrel has a second helical guide groove. The driven lens barrel can move as the second mating protrusion engages with the second helical guide groove. The driven lens barrel is provided with a first limiting straight groove extending along the first direction, and the first lens barrel is provided with a first mating protrusion. One end of the first mating protrusion passes through the first spiral guide groove and mates with the first limiting straight groove.

11. The camera module according to claim 10, characterized in that, The active lens barrel is provided with a first drive groove extending along the first direction, and the second lens barrel is provided with a first drive protrusion, the first drive protrusion cooperating with the first drive groove. The driven lens barrel is provided with a second drive groove extending circumferentially along the driven lens barrel, and the second lens barrel is provided with a second drive protrusion, which cooperates with the second drive groove.

12. The camera module according to claim 10, characterized in that, Both the first spiral guide groove and the second spiral guide groove are straight guide grooves; and / or, The first mating protrusion is provided with a first mating surface, which fits against the inner wall of the first spiral guide groove; and / or, The second mating protrusion is provided with a second mating surface, which is in contact with the inner wall of the second spiral guide groove.

13. An electronic device, characterized in that, Includes the camera module according to any one of claims 1 to 12.

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