Camera modules and electronic equipment

Abstract

The present 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 active lens barrel is rotatably connected to the base. The first lens barrel is sleeved on the active lens barrel and is connected to the active lens barrel through a first matching protrusion and a first spiral guide groove. The first bracket is movably arranged on the base. The first lens barrel is provided with a first lens. The first bracket is provided with a second lens. The second lens 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 the first direction under the cooperation of the first matching protrusion and the first spiral guide groove through the active lens barrel. The second driving mechanism includes a first driving source, a lead screw and a nut. The first driving source is connected to the lead screw, the nut is threadably matched with the lead screw, and the nut is connected to the first bracket to drive the first bracket to move along the first direction.

Description

Technical Field

[0001] The present application belongs to the field of camera technology, and specifically relates to a camera module and electronic equipment. Background Art

[0002] Nowadays, as the camera technology of electronic devices continues to improve, people hope to use electronic devices to capture higher quality images.

[0003] In the actual shooting process, the subject can be magnified by optical zoom. Optical zoom can magnify the subject by changing the distance between the lens and the subject, so the lens needs to move during the zooming process. In order to achieve the movement of the lens, a matching protrusion can be provided on one lens barrel, and a slide groove can be provided on the other lens barrel. The matching protrusion and the slide groove slide together, so as to achieve relative movement between the two lens barrels, and finally achieve the movement of the lens.

[0004] However, in order to make the zoom range of the camera module larger, it is usually necessary to design a multi-stage telescopic structure. There is a complex socket relationship between the telescopic structures at each level, which leads to a relatively complex connection structure of the telescopic structures at each level. Therefore, the structural design of the traditional camera module is difficult. Summary of the invention

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

[0006] In order to solve the above technical problems, this application is implemented as follows:

[0007] In a first aspect, an embodiment of the present application provides 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 arranged 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 matching protrusion and a first spiral guide groove, the first bracket is movably arranged 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, and the first driving mechanism drives the first lens barrel to move along a first direction under the cooperation of the first matching protrusion and the first spiral guide groove through the active lens barrel.

[0010] The second driving mechanism includes a first driving source, a lead screw and a nut. The first driving source is arranged on the base. The first driving source is connected to the lead screw. The nut is threadably matched with the lead screw. The nut is connected to the first bracket. The nut drives the first bracket to move along the first direction. The first direction is a direction approaching or moving away from the photosensitive chip.

[0011] In a second aspect, an embodiment of the present application provides an electronic device, which includes the above-mentioned camera module.

[0012] In the embodiment of the present application, the first driving mechanism can drive the first lens barrel to move under the cooperation of the first matching protrusion and the first spiral guide groove through the active lens barrel, so that the first lens is close to or away from the photosensitive chip, and the second driving mechanism can drive the first bracket to move, so that the second lens is close to or away from the photosensitive chip, thereby realizing the zoom of the camera module. The camera module can achieve a good zoom effect through the movement of the first lens and the second lens, and the first driving mechanism and the second driving mechanism can independently drive the first lens and the second lens to move, so the first lens and the second lens do not need to be set with an overly complicated multi-stage telescopic structure, so this embodiment can reduce the difficulty of structural design of the camera module. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of a partial structure of a camera module disclosed in an embodiment of the present application;

[0014] Figure 2 for Figure 1 A schematic diagram of the structure shown without the base;

[0015] Figure 3 A cross-sectional view of a camera module disclosed in an embodiment of the present application;

[0016] Figure 4 An exploded view of a portion of the structure of a camera module disclosed in an embodiment of the present application;

[0017] Figure 5 This is an exploded view of another part of the structure of the camera module disclosed in an embodiment of the present application.

[0018] Description of reference numerals:

[0019] 110-base, 111-bottom plate, 120-first lens barrel, 121-first matching protrusion, 130-first lens, 140-second lens, 150-active lens barrel, 151-main body, 152-transmission member, 153-mounting member, 154-second spiral guide groove, 155-first drive groove, 156-rack portion, 160-first bracket, 161-first guide portion, 162-notch, 170-first drive mechanism, 171-second drive source, 172-worm, 173-worm wheel, 174-transmission wheel, 180-second drive mechanism, 181-first drive source, 182- Lead screw, 183-nut, 184-third elastic member, 185-mounting frame, 190-second bracket, 191-countersunk hole, 192-extension portion, 193-mounting groove, 210-third lens, 220-first elastic member, 230-second elastic member, 240-second lens barrel, 241-first spiral guide groove, 242-first drive protrusion, 243-second drive protrusion, 250-driven lens barrel, 251-second matching protrusion, 252-first limiting straight groove, 253-second drive groove, 270-first guide column, 280-second guide column, 290-lens bracket, 291-mounting protrusion. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here. In addition, the "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally represents that the objects associated with each other are in an "or" relationship.

[0022] The electronic device provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0023] refer to Figures 1 to 5 The embodiment of the present 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 driving mechanism 170 and a second driving mechanism 180.

[0024] The photosensitive chip is arranged on the base 110. In addition to the photosensitive chip, the base 110 can also be provided with other components of the camera module. The active lens barrel 150 is rotatably connected to the base 110, and the first lens barrel 120 is sleeved on the active lens barrel 150. The first lens barrel 120 is connected to the active lens barrel 150 through the first matching protrusion 121 and the first spiral guide groove 241. Optionally, one of the active lens barrel 150 and the first lens barrel 120 is provided with the first matching protrusion 121, and the other is provided with the first spiral guide groove 241, so that the first lens barrel 120 can be directly driven to extend and retract by the active lens barrel 150. The first bracket 160 is movably disposed on the base 110, the first lens barrel 120 is provided with a first lens 130, the first bracket 160 is provided with a second lens 140, and 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.

[0025] The first driving mechanism 170 is connected to the active lens barrel 150. The first driving mechanism 170 drives the first lens barrel 120 to move along the first direction under the cooperation of the first matching protrusion 121 and the first spiral guide groove 241 through the active lens barrel 150. The second driving mechanism 180 is connected to the first bracket 160. The second driving mechanism 180 drives the first bracket 160 to move along the first direction, where the first direction is the direction of approaching or moving away from the photosensitive chip. In other words, the first driving mechanism 170 can drive the first lens 130 to approach the photosensitive chip and move away from the photosensitive chip, thereby changing the distance between the first lens 130 and the photosensitive chip; the second driving mechanism 180 can drive the second lens 140 to approach the photosensitive chip and move away from the photosensitive chip, thereby changing the distance between the second lens 140 and the photosensitive chip. Optionally, the first driving mechanism 170 can output a rotational driving force, which may include components such as a motor; the second driving mechanism 180 can output a telescopic driving force, which may include components such as a telescopic cylinder.

[0026] Optionally, the first driving mechanism 170 may include a second driving source 171, a worm 172, a worm wheel 173 and a transmission wheel 174, the active lens barrel 150 may be provided with a rack portion 156, the output shaft of the second driving source 171 is coaxially arranged with the worm 172, so the second driving source 171 can drive the worm 172 to rotate, and the worm 172 is meshed with the worm wheel 173, so the worm 172 can drive the worm wheel 173 to rotate, the worm wheel 173 is meshed with the transmission wheel 174, so the worm wheel 173 can drive the transmission wheel 174 to rotate, the transmission wheel 174 is meshed with the rack portion 156, and thus the active lens barrel 150 is driven to rotate through the rack portion 156. Such a first driving mechanism 170 has the advantages of simple structure, high transmission accuracy, long service life, etc.

[0027] In the embodiment of the present application, the first driving mechanism 170 can drive the first lens barrel 120 to move under the cooperation of the first matching protrusion 121 and the first spiral guide groove 241 through the active lens barrel 150, so that the first lens 130 is close to or away from the photosensitive chip, and the second driving mechanism 180 can drive the first bracket 160 to move, so that the second lens 140 is close to or away from the photosensitive chip, so as to achieve the zoom of the camera module. The 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, so the first lens 130 and the second lens 140 do not need to be set with an overly complicated multi-stage telescopic structure, so this embodiment can reduce the difficulty of structural design of the camera module.

[0028] The first driving mechanism 170 and the second driving mechanism 180 can work simultaneously or sequentially. When the first driving mechanism 170 and the second driving mechanism 180 work simultaneously, the positions of the first lens 130 and the second lens 140 can change simultaneously, so that the camera module can switch to the target state more quickly, thereby achieving fast zooming.

[0029] In an optional embodiment, the second drive mechanism 180 includes a first drive source 181, a lead screw 182 and a nut 183, the first drive source 181 is arranged on the base 110, the first drive source 181 is connected to the lead screw 182, the nut 183 is threadedly matched with the lead screw 182, the nut 183 is connected to the first bracket 160, and the nut 183 drives the first bracket 160 to move along the first direction. Optionally, the base 110 may include a base plate 111, and the base plate 111 may be provided with the first drive source 181. Optionally, the first drive source 181 and the lead screw 182 may be arranged in parallel, and both extend along the first direction, so that the structure of the second drive mechanism 180 is more compact. The first drive source 181 can drive the lead screw 182 to rotate, and the lead screw 182 can drive the nut 183 to move along the first direction, thereby driving the first bracket 160 to move along the first direction. It should be noted that the nut 183 here does not have to be a standard part, as long as it is provided with an internal thread. Such a second driving mechanism 180 has the advantages of compact structure and high transmission accuracy.

[0030] Optionally, the second driving mechanism 180 further includes a third elastic member 184, which is disposed between the nut 183 and the first bracket 160. The nut 183 drives the first bracket 160 to move in the first direction through the third elastic member 184, and when the first bracket 160 is subjected to an external force, the third elastic member 184 causes the first bracket 160 to move in a direction close to the photosensitive chip. When the first bracket 160 is subjected to an external force, the external force acts on the third elastic member 184, and the third elastic member 184 may be deformed, thereby buffering the external force and preventing the first bracket 160, the second driving mechanism 180 and other components from being damaged by the external force.

[0031] The second driving mechanism 180 may further include a mounting frame 185, which is connected to the first bracket 160, on which a guide rod may be arranged, and the third elastic member 184 may be sleeved outside the guide rod, and one end of the nut 183 is also sleeved outside the guide rod. At this time, the third elastic member 184 is arranged between the mounting frame 185 and the end of the nut 183, and the nut 183 may drive the mounting frame 185 to move through the third elastic member 184, and the mounting frame 185 further drives the first bracket 160 to move. The guide rod may limit the lateral deformation of the third elastic member 184, thereby facilitating power transmission.

[0032] In order to realize the lightweight design of the camera module, a notch 162 is provided at the edge of the first bracket 160, and the second driving mechanism 180 is at least partially located in the notch 162. It can be seen that the notch 162 can not only reduce the weight of the first bracket 160, but also avoid the second driving mechanism 180, so that the second driving mechanism 180 takes up less space, and thus the structure of the camera module will be more compact.

[0033] In order to expand 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 disposed on the first bracket 160. The second bracket 190 is provided with a third lens 210, and the third lens 210 is located between the first lens 130 and the second lens 140. Optionally, a third driving mechanism may be provided on the first bracket 160, and the third driving mechanism may include a telescopic cylinder or a coil magnet assembly. Other driving schemes may also be adopted as long as the second bracket 190 can be driven to move 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 be changed, more zoom multiples can be obtained by moving the third lens 210.

[0034] 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, and the embodiment of the present application does not limit this.

[0035] In another optional embodiment, the camera module further includes a first elastic member 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 in the first direction through the first bracket 160 and the first elastic member 220. When the second bracket 190 is subjected to an external force, the first elastic member 220 causes the second bracket 190 to move in a direction close to the photosensitive chip. When the second driving mechanism 180 applies a force to the first bracket 160, the first bracket 160 can move while the second bracket 190 can be driven to move through the first elastic member 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 member 220 can be deformed, thereby buffering the external force and preventing the first bracket 160, the second bracket 190 and other components from being damaged due to the external force. At the same time, the first elastic member 220 can allow the second bracket 190 to move relative to the first bracket 160, so that the distance between the third lens 210 and the second lens 140 can be changed to achieve zooming. This zooming solution has the advantages of simple structure.

[0036] In order to improve the stability of the first bracket 160 during movement, the camera module further includes a first guide column 270. One of the base 110 and the first bracket 160 is provided with a first guide portion 161, and the other is fixedly connected to the first guide column 270. The first guide portion 161 is slidably matched with the first guide column 270. In this embodiment, the first guide column 270 can limit the lateral movement of the first bracket 160, thereby providing guidance for the movement of the first bracket 160, so that it moves more smoothly. Further, a plurality of first guide columns 270 can be provided, and the plurality of first guide columns 270 are matched with the plurality of first guide portions 161 in a one-to-one correspondence, thereby optimizing the guiding effect.

[0037] In order to improve the stability of the second bracket 190 during movement, the camera module further includes a second guide column 280. One of the first bracket 160 and the second bracket 190 is provided with a second guide portion, and the other is fixedly connected to the second guide column 280, and the second guide portion is slidably matched with the second guide column 280. In this embodiment, the second guide column 280 can limit the lateral movement of the second bracket 190, thereby providing guidance for the movement of the second bracket 190, so that it moves more smoothly. Furthermore, a plurality of second guide columns 280 can be provided, and the plurality of second guide columns 280 are matched with the plurality of second guide portions one by one, thereby optimizing the guiding effect.

[0038] The first guide portion 161 and the second guide portion can be set as guide holes. In other embodiments, the edge of the first bracket 160 is provided with the first guide portion 161, which is a guide notch, and the edge of the second bracket 190 is provided with the second guide portion, which is a guide hole. Since the first bracket 160 is connected to both the base 110 and the second bracket 190, the structural strength of the first bracket 160 has a greater impact on the life of the camera module, and the guide notch can meet the guidance requirements and reduce the amount of material removed from the first bracket 160 to improve the structural strength of the first bracket 160. The second bracket 190 is mainly connected to the first bracket 160, so its structural strength has less impact on the life of the camera module. Setting the second guide portion as a guide hole will not cause the structural strength of the second guide portion to be too small, and can increase the contact area between the second guide portion and the second guide column 280, thereby improving the guidance effect.

[0039] The connection position between the first elastic member 220 and the second bracket 190 may be offset from the position where the second guide portion is located, but such an arrangement may result in the structure of the second bracket 190 being not compact enough and increase the difficulty of the structural design of the second bracket 190. To this end, the second bracket 190 is provided with an extension portion 192 on one side facing the first bracket 160, and the extension portion 192 is provided with a second guide portion, and the extension portion 192 may at least partially extend into the first elastic member 220. In this embodiment, the extension portion 192 may serve as a connection portion between the second bracket 190 and the first elastic member 220, and after at least partially extending into the first elastic member 220, it may assist in limiting the lateral deformation of the first elastic member 220, thereby being more conducive to extending the life of the first elastic member 220. Since the extension portion 192 and the second guide portion are integrated together, the structure of the second bracket 190 is more compact, the difficulty of its structural design is lower, and the second bracket 190 is not easy to occupy the space of other components, which is more conducive to the overall layout of the camera module.

[0040] Further optionally, the extension portion 192 is provided with a countersunk hole 191, and the second guide portion can be arranged on the bottom surface of the countersunk hole 191. Compared with the solution in which the second guide portion 191 passes through the entire extension portion 192, this embodiment allows the second guide portion 191 to only pass through a portion of the extension portion 192, and the end of the second guide column 280 away from the first bracket 160 can be closer to the first bracket 160, so that the first bracket 160 and the second bracket 190 are distributed more compactly, which is conducive to the miniaturization design of the camera module.

[0041] The third lens 210 can be directly mounted on the second bracket 190. In order to facilitate the installation and replacement of the third lens 210, the camera module further includes a lens bracket 290, the lens bracket 290 is provided with the third lens 210, the edge of the lens bracket 290 is provided with a mounting protrusion 291, the second bracket 190 is provided with a mounting groove 193, and the mounting protrusion 291 cooperates with the mounting groove 193. In this embodiment, the lens bracket 290 is assembled with the second bracket 190 in a detachable connection manner, so it is convenient to disassemble the lens bracket 290, and when the mounting protrusion 291 cooperates with the mounting groove 193, no additional connector is required, and the assembly operation of the camera module is simpler.

[0042] The second bracket 190 may be a ring-shaped member, but in order to reduce the weight of the second bracket 190, in another embodiment, the second bracket 190 has a fifth end and a sixth end, and there is a gap between the fifth end and the sixth end, that is, the second bracket 190 is not a ring-shaped member, and its weight is smaller. In addition, the space between the fifth end and the sixth end of the second bracket 190 can also be used to accommodate other components, so that the space occupied by the camera module is smaller.

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

[0044] With the above structure, when the first lens barrel 120 is in the extended state, once the first lens barrel 120 is acted upon by an external force, the first lens barrel 120 will have a tendency to retract. In this case, although the first driving mechanism 170 does not work, the first lens barrel 120 can still move due to the presence of the second elastic member 230, that is, when the first lens barrel 120 is acted upon by an external force, the second elastic member 230 causes the first lens barrel 120 to move in a direction close to the photosensitive chip. When the external force on the first lens barrel 120 disappears, the second elastic member 230 recovers its deformation, thereby driving the first lens barrel 120 to return to the extended state through the main body 151, so that the camera module can continue to work when the first lens barrel 120 is extended, without the need to re-drive the first lens barrel 120 to extend through the first driving mechanism 170. It can be seen that the second elastic member 230 can convert the dynamic potential energy generated when the camera module is subjected to pressing pressure due to falling, collision, and manual pressing into its own elastic potential energy, thereby achieving a buffering effect. Therefore, the first mating protrusion 121 is not easy to break due to extrusion, and other components of the camera module are not easily affected by impact force. Therefore, this embodiment can extend the life of the camera module.

[0045] When the camera module is provided with both the first elastic member 220 and the second elastic member 230, once the first lens barrel 120 is acted upon by an external force, the first lens barrel 120 is moved closer to the photosensitive chip under the action of the second elastic member 230. When the first lens barrel 120 contacts the second bracket 190, the first lens barrel 120 presses the second bracket 190. Under the action of the first elastic member 220, the second bracket 190 is moved closer to the photosensitive chip. When the external force on the first lens barrel 120 disappears, the first elastic member 220 and the second elastic member 230 simultaneously play a resetting role, so that the first lens barrel 120 and the second bracket 190 are moved away from the photosensitive chip. When the second bracket 190 reaches the limit position, the first lens barrel 120 continues to move away from the photosensitive chip until the first lens barrel 120 reaches the limit position.

[0046] In an optional embodiment, the transmission member 152 has a third end and a fourth end, and there is a gap between the third end and the fourth end, that is, the transmission member 152 is not a closed annular structure, but an arc-shaped member with a gap. Due to the existence of the gap, the second elastic member 230 is sleeved on the transmission member 152 through the gap. In this embodiment, the transmission member 152 adopts a rod-shaped member with a relatively simple structure, and the second elastic member 230 can be directly sleeved on the transmission member 152. Therefore, this embodiment can simplify the structure and assembly of the camera module, reduce the processing cost of the camera module, and at the same time allow the camera module to have more space for arranging other components.

[0047] In another optional embodiment, the active lens barrel 150 further includes a mounting member 153, the mounting member 153 and the transmission member 152 are separately arranged, and the two are connected, the second elastic member 230 is sleeved on the mounting member 153, and the transmission member 152 is a ring 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 arranged mounting member 153, the structural design of the second elastic member 230 is not easily restricted by the transmission member 152, so the second elastic member 230 can be more flexibly arranged, so that the second elastic member 230 has a stronger ability to absorb external forces. Optionally, the mounting member 153 can be an arc-shaped rod-shaped component, so as to facilitate the installation of the second elastic member 230. At the same time, the transmission member 152 is a ring-shaped member, which makes the camera module more stable when performing telescopic movement. At the same time, the ring-shaped transmission member 152 has a higher structural strength, which is not only conducive to transmitting the driving force, but also can withstand the force applied by the second elastic member 230, thereby preventing this part of the force from causing damage to the transmission member 152 and the first driving mechanism 170.

[0048] As mentioned above, the active lens barrel 150 can directly drive the first lens barrel 120. In other embodiments, the camera module further 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 is provided with a first spiral guide groove 241, and the other is provided with a first matching protrusion 121. In this embodiment, the first lens barrel 120 and the second lens barrel 240 can both move in the first direction, so the position change range of the first lens 130 relative to the photosensitive chip is larger, thereby improving the zoom effect of the camera module.

[0049] Optionally, a straight groove may be provided on the base 110 to limit the rotation of the first lens barrel 120, so that the first lens barrel 120 can only move in the first direction, but 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 further includes a driven lens barrel 250, the driven lens barrel 250 is connected to the active lens barrel 150, the second lens barrel 240 is sleeved outside the driven lens barrel 250, the driven lens barrel 250 is provided with a second matching protrusion 251, the active lens barrel 150 is provided with a second spiral guide groove 154, and the driven lens barrel 250 can move with the matching of the second matching protrusion 251 and the second spiral guide groove 154. The driven lens barrel 250 is provided with a first limiting straight groove 252 extending in the first direction, and the first lens barrel 120 is provided with a first matching protrusion 121, one end of the first matching protrusion 121 passes through the first spiral guide groove 241 and matches with the first limiting straight groove 252. At the same time, the base 110 is provided with a second limiting straight groove extending in the first direction, and one end of the second matching protrusion 251 passes through the second spiral guide groove 154 and matches with the second limiting straight groove, thereby limiting the rotation of the driven lens barrel 250. The driven lens barrel 250 can limit 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, it is less likely for the driven lens barrel 250 to limit the moving 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 between the protrusion and the spiral guide groove, but in order to simplify the structure of the camera module, the active lens barrel 150 is provided with a first driving groove 155 extending along the first direction, and the second lens barrel 240 is provided with a first driving protrusion 242, and the first driving protrusion 242 cooperates with the first driving groove 155. At the same time, the driven lens barrel 250 is provided with a second driving groove 253 extending along the circumference of the driven lens barrel 250, and the second lens barrel 240 is provided with a second driving protrusion 243, and the second driving protrusion 243 cooperates with the second driving groove 253. When the active lens barrel 150 rotates, it can drive the driven lens barrel 250 to move in the first direction on the one hand, and can drive the second lens barrel 240 to rotate on the other hand. During the movement of the driven lens barrel 250 in the first direction, it drives the second lens barrel 240 to move in the first direction through the cooperation between the second driving protrusion 243 and the second driving groove 253, thereby realizing the movement and rotation of the second lens barrel 240, so that the second lens barrel 240 drives the first lens barrel 120 to move. This embodiment does not need to realize the movement of the second lens barrel 240 through the spiral guide groove, so the structure of the camera module can be simplified.

[0051] Further, the second driving groove 253 may be configured as an L-shaped groove, so that one end thereof extends to the edge of the driven lens barrel 250 , so as to facilitate assembling 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 respectively through the first driving mechanism 170 and the second driving mechanism 180, the first spiral guide groove 241 can be set as a linear guide groove, so that the structure of the first spiral guide groove 241 is simpler. Similarly, the second spiral guide groove 154 is a linear guide groove, so that the structure of the second spiral guide groove 154 is simpler.

[0053] The first mating protrusion 121 can be set as a cylindrical protrusion, but the mating area between the cylindrical protrusion and the first spiral guide groove 241 is small, which makes the first mating protrusion 121 and the first spiral guide groove 241 easy to wear. Therefore, in other embodiments, the first mating protrusion 121 is provided with a first mating surface, and the first mating surface is in contact with the inner wall of the first spiral guide groove 241. At this time, the first mating protrusion 121 and the first spiral guide groove 241 are in surface contact, and the mating area of ​​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, and the second mating surface is in contact with the inner wall of the second spiral guide groove 154. Compared with the circular second mating protrusion 251, the first mating protrusion 121 provided with the second mating surface is in surface contact with 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] An embodiment of the present application also discloses an electronic device, which includes the camera module in any of the above embodiments.

[0056] The electronic device disclosed in the embodiments of the present application may be a smart phone, a tablet computer, an e-book reader, a wearable device (such as a smart watch), an electronic game console, or other electronic device. The embodiments of the present application do not impose any specific restrictions on the type of electronic device.

[0057] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A camera module, characterized in that: It 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: The photosensitive chip is arranged 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 matching protrusion and a first spiral guide groove, the first bracket is movably arranged 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, and the first driving mechanism drives the first lens barrel to move along a first direction under the cooperation of the first matching protrusion and the first spiral guide groove through the active lens barrel. The second driving mechanism includes a first driving source, a lead screw and a nut, wherein the first driving source is disposed on the base, the first driving source is connected to the lead screw, the nut is threadedly matched with the lead screw, the nut is connected to the first bracket, and the nut drives the first bracket to move along the first direction, wherein the first direction is a direction approaching or moving away from the photosensitive chip; The second driving mechanism also includes a third elastic member, which is arranged between the nut and the first bracket. The nut drives the first bracket to move along the first direction through the third elastic member. When the first bracket is subjected to external force, the third elastic member causes the first bracket to move in a direction close to the photosensitive chip.

2. The camera module according to claim 1, characterized in that: A notch is provided at the edge of the first bracket, and the second driving mechanism is at least partially located in the notch.

3. The camera module according to claim 1, characterized in that: The camera module also includes a second bracket and a third lens. The second bracket is movably arranged on the first bracket. The second bracket is provided with the third lens, and the third lens is located between the first lens and the second lens.

4. The camera module according to claim 3, characterized in that: The camera module further includes a first elastic member, which is disposed between the first bracket and the second bracket. The second driving mechanism drives the second bracket to move along the first direction through the first bracket and the first elastic member. When the second bracket is subjected to an external force, the first elastic member causes the second bracket to move in a direction approaching the photosensitive chip.

5. The camera module according to claim 4, characterized in that: The camera module further includes a first guide post, wherein one of the base and the first bracket is provided with a first guide portion, and the other is fixedly connected to the first guide post, and the first guide portion is slidably matched with the first guide post; The camera module also includes a second guide post. One of the first bracket and the second bracket is provided with a second guide portion, and the other is fixedly connected to the second guide post. The second guide portion is slidably matched with the second guide post.

6. The camera module according to claim 5, characterized in that: The first guide portion is provided at the edge of the first bracket, and the first guide portion is a guide notch. The second guide portion is provided at the edge of the second bracket, and the second guide portion is a guide hole.

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

8. The camera module according to claim 3, characterized in that: The camera module further comprises a lens bracket, the lens bracket is provided with the third lens, an edge of the lens bracket is provided with a mounting protrusion, the second bracket is provided with a mounting groove, the mounting protrusion cooperates with the mounting groove; and / or, The second bracket has a fifth end and a sixth end, and a gap is formed between the fifth end and the sixth end.

9. The camera module according to claim 1, characterized in that: The camera module further includes a second elastic member, the active lens barrel includes a main body member and a transmission member which are separately arranged, a first end of the second elastic member is connected to the main body member, a second end of the second elastic member is connected to the transmission member, and the first driving mechanism is connected to the transmission member. The first driving mechanism drives the first lens barrel to move along the first direction through the transmission member, the second elastic member and the main body member in sequence. When the first lens barrel is acted upon by an external force, the second elastic member causes the first lens barrel to move in a direction close to the photosensitive chip.

10. The camera module according to claim 1, characterized in that: The camera module also includes a second lens barrel, which is sleeved on the active lens barrel, and 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 matching protrusion.

11. The camera module according to claim 10, characterized in that: The camera module further comprises a driven lens barrel, the driven lens barrel is connected to the active lens barrel, the second lens barrel is sleeved outside the driven lens barrel, the driven lens barrel is provided with a second matching convex portion, the active lens barrel is provided with a second spiral guide groove, and the driven lens barrel can move with the matching of the second matching convex portion and the second spiral 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 the first matching protrusion, one end of the first matching protrusion passes through the first spiral guide groove and matches with the first limiting straight groove.

12. The camera module according to claim 11, characterized in that: The active lens barrel is provided with a first driving groove extending along the first direction, and the second lens barrel is provided with a first driving protrusion, and the first driving protrusion cooperates with the first driving groove. The driven lens barrel is provided with a second driving groove extending along the circumferential direction of the driven lens barrel, and the second lens barrel is provided with a second driving protrusion, and the second driving protrusion is matched with the second driving groove.

13. The camera module according to claim 11, characterized in that: The first spiral guide groove and the second spiral guide groove are both linear guide grooves; and / or, The first mating protrusion is provided with a first mating surface, and the first mating surface is in contact with the inner wall of the first spiral guide groove; and / or, The second mating protrusion is provided with a second mating surface, and the second mating surface is in contact with the inner wall of the second spiral guide groove.

14. An electronic device, characterized in that: A camera module comprising any one of claims 1 to 13.

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