Telescopic lens mechanism with automatic focusing function and camera

Abstract

The utility model discloses a telescopic lens mechanism with an automatic focusing function and a camera. The telescopic lens mechanism comprises a bottom shell assembly; the driving assembly is arranged on the bottom shell assembly in a penetrating manner; the rotating cylinder assembly is movably arranged in the bottom shell assembly in a penetrating manner and is in transmission connection with the driving assembly; the telescopic cylinder assembly movably penetrates through the rotating cylinder assembly and is arranged in the rotating cylinder assembly in a transmission mode; the lens assembly is fixedly arranged in the telescopic cylinder assembly and comprises a mounting shell; the image processing circuit board is fixedly arranged in the mounting shell; the focusing motor is fixedly arranged on the outer side of the mounting shell and is electrically connected with the image processing circuit board; the inner bracket is movably arranged in the mounting shell and is in transmission connection with the focusing motor; and the lens main body is detachably connected to the inner bracket. According to the utility model, through cooperation of the driving assembly, the rotating cylinder assembly, the telescoping cylinder assembly and the lens assembly, problems of complex and unreliable combination structure of a focusing motor and an optical lens in a conventional telescoping lens are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of lens technology, and in particular to a telescopic lens mechanism and camera with autofocus function. Background Technology

[0002] With the widespread adoption of mobile electronic devices, technologies related to camera modules (used to acquire images, such as video or photos) applied to these devices have experienced rapid development and progress. Recently, due to the widespread adoption of mobile communication technology, miniaturized and lightweight camera modules have emerged. Currently, the lens telescopic function in traditional cameras is achieved by constructing threads on the outer ring of the lens and establishing a spiral guide rail and an external independent screw within the assembly. This method, combined with a motor and gears, requires extremely high-precision optical lenses and has a relatively complex structure; mold development is costly, requires multiple sets of gears for coordination, and assembly is inconvenient; furthermore, it lacks reliable focusing functionality. Therefore, this paper proposes a telescopic lens mechanism and camera with autofocus to solve the aforementioned problems. Summary of the Invention

[0003] One of the objectives of this invention is to provide a telescopic lens mechanism and camera with autofocus function, so as to solve the problem that the existing telescopic lens has a complex and unreliable combination structure of focus motor and optical lens.

[0004] This utility model relates to a telescopic lens mechanism and camera with autofocus function, which can be achieved through the following technical solutions:

[0005] This utility model discloses a telescopic lens mechanism with autofocus function, comprising: a base shell assembly; a drive assembly that passes through the base shell assembly; a rotating cylinder assembly that is movably disposed through the base shell assembly and is drivenly connected to the drive assembly; a telescopic cylinder assembly that is movably disposed through the rotating cylinder assembly and is drivenly connected to the rotating cylinder assembly; and a lens assembly that is fixedly disposed in the telescopic cylinder assembly and has autofocus function.

[0006] The lens assembly includes a mounting housing fixedly disposed within the telescopic cylinder assembly; an image processing circuit board fixedly disposed within the mounting housing; a focusing motor fixedly disposed outside the mounting housing and electrically connected to the image processing circuit board; an inner bracket movably disposed within the mounting housing and drivenly connected to the focusing motor; and a lens body detachably connected to the inner bracket, which moves with the movement of the inner bracket.

[0007] In one embodiment, the bottom shell assembly includes a bottom shell body, which is a hollow cavity with one end open; a drive mounting cavity fixedly disposed on the outside of the bottom shell body, and a drive assembly fixedly disposed in the drive mounting cavity and passing through the bottom shell body to be drively connected to the rotating cylinder assembly.

[0008] In one embodiment, the drive assembly includes a drive motor fixedly disposed in the drive mounting cavity, the drive motor being capable of forward and reverse rotation; a drive gear drively connected to the drive motor; and a transmission structure meshing and drivingly connected to the drive gear and the rotating cylinder assembly respectively.

[0009] In one embodiment, the transmission structure includes a rotating shaft fixedly disposed in the drive mounting cavity; a first transmission gear and a second transmission gear fixedly connected and synchronously rotating on the rotating shaft; the first transmission gear meshes with the drive gear for transmission, and the second transmission gear meshes with the rotating cylinder assembly for transmission.

[0010] In one embodiment, the rotating cylinder assembly includes a rotating outer cylinder movably disposed in the bottom shell body and meshing with a second transmission gear of the drive assembly; and a rotating inner cylinder fixedly disposed through the rotating outer cylinder and drivingly connected to the telescopic cylinder assembly.

[0011] In one embodiment, the rotating outer cylinder is provided with a rack at one end of the bottom shell body, and the rack is meshed with the second transmission gear for transmission.

[0012] In one embodiment, the telescopic cylinder assembly includes an outer cylinder that is movably disposed within the rotating outer cylinder; an inner cylinder that is movably disposed within the outer cylinder and movably sleeved on the rotating inner cylinder; and a rotating structure that is disposed within the inner cylinder and is throttle-connected to the rotating inner cylinder, and is capable of engaging and throttle-connecting with the outer cylinder.

[0013] In one embodiment, the rotating structure includes a rotating ring disposed in the inner cylinder; and a plurality of limiting posts fixedly disposed on the rotating ring, which sequentially pass through the rotating inner cylinder and the inner cylinder, and the limiting posts are capable of engaging and driving with the outer cylinder.

[0014] In one embodiment, the telescopic lens mechanism with autofocus function of the present invention further includes a rotating cover plate assembly, which is movably disposed on one end of the telescopic cylinder assembly.

[0015] This utility model discloses a camera with autofocus function, which includes the telescopic lens mechanism described in any of the above-mentioned claims.

[0016] Compared with the prior art, the beneficial effects of this utility model of a telescopic lens mechanism with autofocus function and a camera are as follows:

[0017] This utility model discloses a telescopic lens mechanism and camera with autofocus function. The driving component sequentially drives the rotating cylinder assembly and the telescopic cylinder assembly to perform telescopic operation, thereby realizing the telescopic operation of the lens mechanism. At the same time, the focusing motor drives the lens body to move through the inner bracket, thereby realizing the autofocus operation of the telescopic lens mechanism. This effectively solves the problem of complex and unreliable combination structure of focusing motor and optical lens in existing telescopic lenses. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a telescopic lens mechanism with autofocus function according to this utility model;

[0020] Figure 2 This is a structural schematic diagram of a telescopic lens mechanism with autofocus function from another perspective of this utility model;

[0021] Figure 3 This is an exploded structural diagram of a telescopic lens mechanism with autofocus function according to the present invention, including a drive assembly, a rotating cylinder, a telescopic cylinder assembly, a lens assembly, and a rotating cover plate assembly.

[0022] Figure 4 yes Figure 3 The diagram shows the structure of the driving component.

[0023] Figure 5 yes Figure 3 The diagram shows the structure of the rotating cylinder.

[0024] Figure 6 yes Figure 3 The exploded structure diagram of the telescopic cylinder assembly shown;

[0025] Figure 7 yes Figure 3 A schematic diagram of the exploded structure of the lens assembly shown.

[0026] Figure 8 yes Figure 3 A schematic diagram of the longitudinal cross-sectional structure of the lens assembly shown.

[0027] Figure 9 yes Figure 3 The exploded structural diagram of the rotating cover assembly is shown.

[0028] The diagram shows: 10, telescopic lens mechanism; 11, bottom shell assembly; 111, bottom cover body; 1111, first guide groove; 112, drive mounting cavity; 12, drive assembly; 121, drive motor; 122, drive gear; 123, transmission structure; 1231, rotating shaft; 1232, first transmission gear; 1233, second transmission gear; 13, rotating cylinder assembly; 131, rotating outer cylinder; 1311, first guide post; 1312, rack; 1313, second guide groove; 132, rotating inner cylinder; 1321, first limiting groove; 14, telescopic cylinder assembly; 141, outer cylinder body; 1411, second guide post; 1412 142, Inner cylinder; 1421, Second limiting groove; 1422, Slot; 143, Rotating structure; 1431, Rotating ring; 1432, Limiting post; 15, Lens assembly; 151, Mounting housing; 1511, Main housing; 1512, Cover plate; 152, Image processing circuit board; 153, Focusing motor; 154, Inner bracket; 155, Lens body; 156, Electrical connection wire; 16, Rotating cover plate assembly; 161, Rotating bracket; 1611, First through hole; 1612, Locking block; 162, First cover plate; 163, Second cover plate; 164, Torsion spring; 165, Protective cover plate; 1651, Second through hole. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] Please see Figures 1-3As shown, the telescopic lens mechanism 10 with autofocus function of this utility model mainly includes a bottom shell assembly 11, a drive assembly 12, a rotating cylinder assembly 13, a telescopic cylinder assembly 14, a lens assembly 15, and a rotating cover plate assembly 16. The bottom shell assembly 11 is a hollow cavity with one open end. The drive assembly 12 is disposed through the bottom shell assembly 11. The rotating cylinder assembly 13 is movably disposed through the bottom shell assembly 11 and is connected to the drive assembly 12. The drive assembly 12 drives the rotating cylinder assembly 13 to telescopically move relative to the bottom shell assembly 11. The telescopic cylinder assembly 14 is movably disposed within the telescopic cylinder assembly 13 and is connected to the telescopic cylinder assembly 13 in a transmission manner, and is capable of telescopic movement relative to the telescopic cylinder assembly 13; the lens assembly 15 is fixedly disposed within the telescopic cylinder assembly 14 and moves with the telescopic cylinder assembly 14, and the lens assembly 15 has an autofocus function; the rotating cover assembly 16 is movably disposed at one end of the telescopic cylinder assembly 14 and can be engaged with the telescopic cylinder assembly 14, and the telescopic cylinder assembly 14 can engage the rotating cover assembly 16, thereby facilitating the shooting operation of the lens assembly 15.

[0032] Please see Figures 1-3 As shown, in this embodiment, the bottom shell assembly 11 includes a bottom shell body 111 and a drive mounting cavity 112. The bottom shell body 111 is a hollow cavity with one open end. The drive mounting cavity 112 is fixedly disposed on the outside of the bottom shell body 111, and the drive assembly 12 is fixedly disposed in the drive mounting cavity 112 and passes through the bottom shell body 111 to be connected to the rotating cylinder assembly 13. Specifically, a plurality of first guide grooves 1111 are provided on the inner wall of the bottom shell body 111, and the rotating cylinder assembly 13 is movably disposed in the plurality of first guide grooves 1111, thereby limiting and guiding the movement of the rotating cylinder assembly 13 through the first guide grooves 1111.

[0033] Please see Figures 1-4As shown, in this embodiment, the drive assembly 12 includes a drive motor 121, a drive gear 122, and a transmission structure 123. The drive motor 121 is fixedly installed in the drive mounting cavity 112 and can rotate in both directions. The drive gear 122 is driven to the rotating shaft of the drive motor 121, and the drive motor 121 drives the drive gear 122 to rotate. The transmission structure 123 is meshed and driven to the drive gear 122 and the rotating cylinder assembly 13, respectively. The drive motor 121 drives the rotating cylinder assembly 13 to extend and retract relative to the bottom shell body 111 through the drive gear 122 and the transmission structure 123 in sequence. Specifically, the transmission structure 123 includes a rotating shaft 1231, a first transmission gear 1232, and a second transmission gear 1233; both ends of the rotating shaft 1231 are fixedly disposed in the drive mounting cavity 112; the first transmission gear 1232 and the second transmission gear 1233 are fixedly connected and rotate synchronously on the rotating shaft 1231, the first transmission gear 1232 is meshed with the drive gear 122 for transmission, and the second transmission gear 1233 is meshed with the rotating cylinder assembly 13 for transmission; preferably, the first transmission gear 1232 and the second transmission gear 1233 are integrally formed, and the second transmission gear 1233 is an elongated gear.

[0034] Please see Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, in this embodiment, the rotating cylinder assembly 13 includes a rotating outer cylinder 131 and a rotating inner cylinder 132; the rotating outer cylinder 131 is movably disposed in the bottom shell body 111 and is meshed with the second transmission gear 1233 for transmission; the rotating inner cylinder 132 is fixedly disposed through the rotating outer cylinder 131 and is connected to the telescopic cylinder assembly 14 for transmission. Specifically, a plurality of first guide posts 1311 are provided on the outer side of the rotating outer cylinder 131. The plurality of first guide posts 1311 are respectively movably disposed in the corresponding first guide grooves 1111. Through the cooperation of the first guide posts 1311 and the first guide grooves 1111, the telescopic movement of the rotating outer cylinder 131 relative to the bottom shell body 111 is guided and limited. A rack 1312 is provided on one end of the rotating outer cylinder 131 disposed in the bottom shell body 111. The rack 1312 is meshed and connected to the second transmission gear 1233. The drive motor 121 drives the rotating outer cylinder 131 to telescopically move relative to the bottom shell body 111 through the drive gear 122, the first transmission gear 1232, the second transmission gear 1233, and the rack 1312 in sequence. The rotating outer cylinder 131 drives the rotating inner cylinder 132 to rotate. A plurality of second guide grooves 1313 are provided on the inner wall of the rotating outer cylinder 131, which limit and guide the movement of the telescopic cylinder assembly 14. Specifically, a plurality of first limiting grooves 1321 are provided through the rotating inner cylinder 132, which limit and guide the movement of the telescopic cylinder assembly 14.

[0035] Please see Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, in this embodiment, the telescopic cylinder assembly 14 includes an outer cylinder 141, an inner cylinder 142, and a rotating structure 143. The outer cylinder 141 is movably disposed within the rotating outer cylinder 131. The inner cylinder 142 is movably disposed within the outer cylinder 141 and is movably sleeved on the rotating inner cylinder 132. It can engage with the rotating cover assembly 16 to limit the rotation of the cover assembly 16. The rotating structure 143 is disposed within the inner cylinder 142 and is drive-connected to the rotating inner cylinder 132. It can engage with the outer cylinder 141. The rotating structure 143 can drive the outer cylinder 141 and the inner cylinder 142 to perform telescopic movements respectively. Specifically, a plurality of second guide posts 1411 are provided on the outer wall of the outer cylinder 141. The plurality of second guide posts 1411 are respectively movably arranged in the corresponding second guide grooves 1313. Through the cooperation of the second guide posts 1411 and the second guide grooves 1313, the telescopic movement of the outer cylinder 141 relative to the rotating outer cylinder 131 is guided and limited. A notch 1412 is provided on one end of the outer cylinder 141 in the rotating cylinder assembly 13. The rotating structure 143 is engaged and connected to the notch 1412, so that the rotating structure 143 can drive the outer cylinder 141 to move.

[0036] Please see Figure 6 As shown, specifically, the inner cylinder 142 is provided with multiple second limiting grooves 1421, which limit and guide the movement of the rotating structure 143; a slot 1422 is provided on the side of the inner cylinder 142 opposite to the rotating cover assembly 16, which can contact and engage with the rotating cover assembly 16 to limit the movement of the rotating cover assembly 16. Specifically, the rotating structure 143 includes a rotating ring 1431 and multiple limiting posts 1432; the rotating ring 1431 is disposed in the inner cylinder 142; the multiple limiting posts 1432 are respectively fixedly disposed on the rotating ring 1431 and respectively pass through the corresponding first limiting groove 1321 and second limiting groove 1421 in sequence, and engage with the notch 1412 on the outer cylinder 141.

[0037] Please see Figure 3 , Figure 7 and Figure 8As shown, in this embodiment, the lens assembly 15 includes a mounting housing 151, an image processing circuit board 152, a focusing motor 153, an inner bracket 154, a lens body 155, and an electrical connection cable 156. The mounting housing 151 is a hollow cavity, which is fixedly disposed in the inner cylinder 142. The image processing circuit board 152 is fixedly disposed in the mounting housing 151 and processes the images captured by the lens body 155. The focusing motor 153 is fixedly disposed on the outside of the mounting housing 151 and electrically connected to the image processing circuit board 152. The inner bracket 154 is movably disposed in the mounting housing 151 and is drivenly connected to the focusing motor 153, which drives the inner bracket 154 to move. The lens body 155 is detachably connected to the inner bracket 154 and moves with the movement of the inner bracket 154, thereby realizing the automatic focusing operation of the lens body 155. The electrical connection cable 156 is electrically connected to the image processing circuit board 152 and passes through the mounting housing 151. Specifically, the mounting housing 151 includes a main housing 1511 and a cover plate 1512. The main housing 1511 is a hollow cavity with openings at both ends. The cover plate 1512 is fixedly mounted on one side of the main housing 1511. The image processing circuit board 152 and the focusing motor 153 both use existing technology, so their specific structures and working processes will not be described in detail here, as long as they meet the requirements of this application. The lens body 155 is detachably threaded onto the inner bracket 154. The electrical connection cable 156 uses an FPC. Preferably, the focusing motor 153 is a voice coil motor.

[0038] Please see Figure 2 , Figure 3 and Figure 9As shown, in this embodiment, the rotating cover assembly 16 includes a rotating bracket 161, a first cover plate 162, a second cover plate 163, two torsion springs 164, and a protective cover plate 165. The rotating bracket 161 is disposed through the outer cylinder 141 and can engage with the slot 1422 on the inner cylinder 142. The first cover plate 162 and the second cover plate 163 are respectively movably disposed on the rotating bracket 161, and the first cover plate 162 and the second cover plate 163 can be opened or closed relative to each other. The two torsion springs 164 are respectively disposed on the sides of the first cover plate 162 and the second cover plate 163, and respectively provide a relative opening force to the first cover plate 162 and the second cover plate 163. When the inner cylinder 142 moves outward, the rotating bracket 161 disengages from the engagement with the inner cylinder 142, and the relative opening operation of the first cover plate 162 and the second cover plate 163 is realized under the force of the two torsion springs 164. The protective cover plate 165 is fixedly disposed on the rotating bracket 161. Specifically, a first through hole 1611 is provided through the rotating bracket 161, and the position of the first through hole 1611 corresponds to the position of the lens body 155; a locking block 1612 is provided on the side of the rotating bracket 161, and the position of the locking block 1612 corresponds to the position of the locking groove 1422; a second through hole 1651 is provided through the protective cover plate 165, and the position of the second through hole 1651 corresponds to the position of the first through hole 1611.

[0039] This utility model discloses a camera with autofocus function, which includes the telescopic lens mechanism 10 described above.

[0040] It should be noted that the specific working process of the telescopic lens mechanism and camera with autofocus function of this utility model is as follows: When lens operation is required, the drive motor 121 is energized and rotates forward. The drive motor 121 drives the rotating cylinder assembly 13 to move outward relative to the bottom shell assembly 11 through the drive gear 122, the first transmission gear 1232, and the second transmission gear 1233 in sequence. The rotating cylinder assembly 13 drives the inner cylinder 142 to move outward through the rotating structure 143, thereby causing the rotating bracket 161 to disengage from the locking and limiting connection with the inner cylinder 142. At the same time, under the force of the two torsion springs 164, the first cover plate 162 and the second cover plate 163 are opened relative to each other, thereby facilitating the lens assembly 15 to take pictures. After the telescopic lens mechanism 10 completes the extension operation, the focusing motor 153 is energized and works. It drives the lens body 155 to move through the inner bracket 154 to perform autofocus operation, thereby completing the extension and autofocus operation of the telescopic lens mechanism 10.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A telescopic lens mechanism with autofocus function, characterized in that, include: Bottom shell assembly; A drive assembly, which is disposed through the bottom shell assembly; A rotating cylinder assembly is movably disposed within the bottom shell assembly and is connected to the drive assembly in a transmission manner. A telescopic cylinder assembly, which is movably disposed through the rotating cylinder assembly and is drively connected to the rotating cylinder assembly; A lens assembly, which is fixedly installed in the telescopic tube assembly and has an autofocus function; The lens assembly includes a mounting housing fixedly disposed within the telescopic cylinder assembly; an image processing circuit board fixedly disposed within the mounting housing; a focusing motor fixedly disposed outside the mounting housing and electrically connected to the image processing circuit board; an inner bracket movably disposed within the mounting housing and drivenly connected to the focusing motor; and a lens body detachably connected to the inner bracket, which moves with the movement of the inner bracket.

2. A telescopic lens mechanism with autofocus function according to claim 1, characterized in that, The bottom shell assembly includes a bottom shell body, which is a hollow cavity with one end open; a drive mounting cavity fixedly disposed on the outside of the bottom shell body, and a drive assembly fixedly disposed in the drive mounting cavity and passing through the bottom shell body to be connected to the rotating cylinder assembly for transmission.

3. A telescopic lens mechanism with autofocus function according to claim 2, characterized in that, The drive assembly includes a drive motor, which is fixedly disposed in the drive mounting cavity and is capable of forward and reverse rotation; a drive gear connected to the drive motor; and a transmission structure that meshes and drives the drive gear and the rotating cylinder assembly respectively.

4. A telescopic lens mechanism with autofocus function according to claim 3, characterized in that, The transmission structure includes a rotating shaft, which is fixedly disposed in the drive mounting cavity; a first transmission gear and a second transmission gear are fixedly connected and are synchronously rotated on the rotating shaft. The first transmission gear is meshed with the drive gear and the second transmission gear is meshed with the rotating cylinder assembly.

5. A telescopic lens mechanism with autofocus function according to claim 2, characterized in that, The rotating cylinder assembly includes a rotating outer cylinder, which is movably disposed in the bottom shell body and is meshed with the second transmission gear of the drive assembly; and a rotating inner cylinder, which is fixedly disposed through the rotating outer cylinder and is pulsatorically connected to the telescopic cylinder assembly.

6. A telescopic lens mechanism with autofocus function according to claim 5, characterized in that, The rotating outer cylinder is provided with a rack at one end of the bottom shell body, and the rack is meshed with the second transmission gear for transmission.

7. A telescopic lens mechanism with autofocus function according to claim 5, characterized in that, The telescopic cylinder assembly includes an outer cylinder body, which is movably disposed within the rotating outer cylinder; An inner cylinder is movably disposed within the outer cylinder and movably fitted onto the rotating inner cylinder; a rotating structure is disposed within the inner cylinder and is drive-connected to the rotating inner cylinder, which can engage and drive with the outer cylinder.

8. A telescopic lens mechanism with autofocus function according to claim 7, characterized in that, The rotating structure includes a rotating ring disposed in the inner cylinder; and multiple limiting posts fixedly disposed on the rotating ring, which pass through the rotating inner cylinder and the inner cylinder in sequence, and the limiting posts can engage and drive with the outer cylinder.

9. A telescopic lens mechanism with autofocus function according to claim 1, characterized in that, It further includes a rotating cover assembly, which is movably disposed at one end of the telescopic cylinder assembly.

10. A camera with autofocus function, characterized in that, Includes the telescopic lens mechanism as described in any one of claims 1-9.

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