Telescopic lens device and mobile phone

Abstract

The present invention discloses a telescopic lens device and a mobile phone. The telescopic lens device includes a shell, at least two lens groups and a stretching buffer. The shell is formed with a mounting channel having an object side end and an image side end relatively arranged along a first direction. A connecting portion with a connecting platform is provided in the mounting channel. At least two lens groups are installed in the mounting channel, including a first lens group arranged adjacent to the image side end. The first lens group is movably installed in the mounting channel along the first direction. The first lens group has a mounting platform that is opposite to and spaced from the connecting platform along the first direction. The mounting platform is arranged adjacent to the image side end. The stretching buffer is provided between the mounting platform and the connecting platform, and the two ends are connected to the connecting platform and the mounting platform. Under the action of the stretching buffer, the speed of the first lens group moving toward the image side end is slowed down, the force on the lens is reduced, and the problem of the first lens group colliding with the mobile phone body located at the image side end due to excessive speed is avoided, thereby improving the service life of the telescopic lens device.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile phones, and in particular to a telescopic lens device and a mobile phone. Background Art

[0002] With the development of technology, people pay more and more attention to the quality of photos. Mobile phones usually use telescopic lens barrels to achieve zoom when shooting. However, during the mobile phone photo shooting process, there is a situation where the lens falls when it is extended, causing the telescopic lens barrel to quickly hit the mobile phone body. This will cause the risk of damage to the lens and greatly reduce the performance of the lens. Summary of the Invention

[0003] The main purpose of the present invention is to propose a telescopic lens device and a mobile phone, aiming to solve the problem in the prior art that during the mobile phone taking pictures, the lens may fall when it is extended, causing the telescopic lens barrel to quickly collide with the mobile phone body, which will lead to the risk of damage to the lens and greatly reduce the performance of the lens.

[0004] To achieve the above-mentioned object, the present invention proposes a telescopic lens device, which is suitable for a mobile phone. The telescopic lens device comprises:

[0005] The housing is formed with a mounting channel, the mounting channel having an object side end and an image side end oppositely disposed along a first direction, a connecting portion provided in the mounting channel, the connecting portion having a connecting platform;

[0006] At least two lens groups are installed in the installation channel and are arranged in sequence along the first direction, the at least two lens groups include a first lens group arranged adjacent to the image side end, the first lens group is movably installed in the installation channel along the first direction, the first lens group has a mounting platform arranged opposite to and spaced from the connecting platform along the first direction, the mounting platform being arranged adjacent to the image side end;

[0007] The stretching buffer is sandwiched between the mounting platform and the connecting platform, and two ends thereof are respectively connected to the connecting platform and the mounting platform.

[0008] Optionally, the stretch buffer comprises a stretch spring, and both ends of the stretch spring are respectively mounted on the connecting platform and the mounting platform.

[0009] Optionally, the connecting platform and / or the mounting platform is provided with a slot for clamping the end of the tension spring.

[0010] Optionally, the first lens group includes a first mounting barrel, the first mounting barrel is used to mount the lens, and a side portion of the first mounting barrel is provided with an abutment plate extending along its axial direction;

[0011] The telescopic lens device further includes a first drive assembly, which is installed in the installation channel and includes:

[0012] a driving plate disposed in contact with the abutting plate along the first direction, the driving plate being disposed adjacent to the object-side end and having a threaded hole extending through the driving plate along the first direction;

[0013] The screw rod is extended along the first direction, and is installed in the installation channel by rotating along the vertical axis and is threadedly connected to the threaded hole.

[0014] Optionally, the mounting platform is provided on a side portion of the first mounting barrel and is adjacent to the image side end.

[0015] Optionally, the first driving component further includes:

[0016] A driving motor having a driving shaft extending along the first direction, wherein a driving gear is mounted on the driving shaft;

[0017] The driven gear is sleeved on the end of the screw rod and meshes with the driving gear.

[0018] Optionally, a guide structure is further provided between the first mounting barrel and the shell, the guide structure comprising a guide portion extending along the first direction and a mating portion adapted to the guide portion, one of the guide portion and the mating portion being provided on the shell, and the other being provided on the first mounting barrel.

[0019] Optionally, the guide portion is provided on the housing and includes a guide column, and the matching portion is provided on the first mounting barrel and includes a guide hole.

[0020] Optionally, the at least two lens groups further include a second lens group, and the second lens group is installed in the installation channel, including:

[0021] a first lens barrel extending along the first direction, wherein an inner sidewall of the first lens barrel is formed with at least one first driving inclined groove, the first driving inclined groove extending along the first direction and being inclined along the circumference of the first lens barrel, and the first driving inclined groove having a guiding sidewall surface;

[0022] a first driving sleeve, sleeved in the first lens barrel, and the first lens barrel is rotatably arranged relative to the first driving sleeve, the first driving sleeve having at least one first elongated hole extending along a first direction;

[0023] a first movable lens barrel and a second movable lens barrel, wherein the first movable lens barrel is movably arranged along a first direction to drive the first lens group to move along the first direction, and the second movable lens barrel is movably arranged along the first direction to drive the second lens group to move along the first direction, the first movable lens barrel is sleeved in the first driving sleeve, and the second movable lens barrel is sleeved in the first movable lens barrel, and the first movable lens barrel is rotatable relative to the second movable lens barrel, at least one of the first movable lens barrel and the second movable lens barrel is provided with a first protrusion, the first protrusion passes through the first elongated hole and cooperates with the first driving inclined groove, so that when the first lens barrel rotates relative to the first driving sleeve, the first elongated hole drives the first protrusion to drive the first movable lens barrel or the second movable lens barrel to move along the first driving inclined groove; and

[0024] a tension spring, one end of which is connected to the first movable lens barrel and the other end of which is connected to the second movable lens barrel, the tension spring being used to hold the first protrusion against the guide side wall when the first protrusion slides along the first driving inclined groove;

[0025] Wherein, the guide side wall surface of the at least one first driving inclined groove is set as a nonlinear curved surface in the circumferential direction of the first lens barrel.

[0026] The main purpose of the present invention is to provide a mobile phone, comprising the telescopic lens device as described above, wherein the telescopic lens device comprises:

[0027] The housing is formed with a mounting channel, the mounting channel having an object side end and an image side end oppositely disposed along a first direction, a connecting portion provided in the mounting channel, the connecting portion having a connecting platform;

[0028] At least two lens groups are installed in the installation channel and are arranged in sequence along the first direction, the at least two lens groups include a first lens group arranged adjacent to the image side end, the first lens group is movably installed in the installation channel along the first direction, the first lens group has a mounting platform arranged opposite to and spaced from the connecting platform along the first direction, the mounting platform is arranged adjacent to the image side end; and

[0029] The stretching buffer is sandwiched between the mounting platform and the connecting platform, and two ends thereof are respectively connected to the connecting platform and the mounting platform.

[0030] In the technical solution provided by the present invention, a connecting part is provided in the mounting channel, and the connecting part has a connecting platform. The at least two are installed in the mounting channel and arranged in sequence along the first direction. The at least two include a first lens group arranged adjacent to the image side end, and the first lens group is movably installed in the mounting channel along the first direction. The first lens group has a mounting platform opposite to and spaced from the connecting platform along the first direction, and the mounting platform is arranged adjacent to the image side end. Since a stretching buffer is provided between the mounting platform and the connecting platform, the two ends of the stretching buffer are respectively connected to the connecting platform and the mounting platform, so that when the first lens group is subjected to external force and moves toward the image side end, under the action of the stretching buffer, the speed of the first lens group moving toward the image side end is slowed down, the buffering time when the first lens group is subjected to force is increased, the force on the lens is reduced, the structural strength of the lens is increased, and the problem of the first lens group colliding with the mobile phone body located at the image side end due to excessive speed is avoided, thereby improving the service life of the telescopic lens device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0032] Figure 1 A schematic cross-sectional view of an embodiment of a telescopic lens device of the present invention in an extended state (at an angle) is provided;

[0033] Figure 2 for Figure 1 Schematic diagram of the structure of the first lens group (one angle);

[0034] Figure 3 for Figure 1 Schematic diagram of the structure of the first lens group (another angle);

[0035] Figure 4 for Figure 1 A schematic cross-sectional view of the telescopic lens device in a retracted state;

[0036] Figure 5 for Figure 1 A schematic cross-sectional view of the telescopic lens assembly in the extended state (from another angle);

[0037] Figure 6 for Figure 5 A schematic cross-sectional view of the first lens barrel;

[0038] Figure 7 for Figure 1 An exploded diagram of the first lens barrel, the first driving sleeve, the first movable lens barrel, the second movable lens barrel and the tension spring;

[0039] Figure 8 It is a partial structural diagram of the telescopic lens device;

[0040] Figure 9 Schematic diagram of the internal structure of the telescopic lens device.

[0041] Description of Figure Numbers:

[0042]

[0043] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0045] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0046] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0047] With the development of technology, people are paying more and more attention to the quality of photos. Mobile phones usually use a telescopic lens barrel to achieve zoom when shooting. However, during the mobile phone photo shooting process, there is a problem that the lens falls when it is extended. The current structure does not have any buffer structure, which causes the telescopic lens barrel to quickly collide with the mobile phone body. This will cause the risk of damage to the lens and greatly reduce the performance of the lens.

[0048] The present invention provides a telescopic lens device and a mobile phone, wherein the telescopic lens device is used for zooming and focusing arranged along the thickness direction of the mobile phone. In this application, the thickness direction of the mobile phone is referred to as the first direction. Figures 1 to 9 This is a structural schematic diagram of an embodiment of the telescopic lens device provided by the present invention.

[0049] See also Figures 1 to 4 The telescopic lens device 100 includes a shell 1, at least two and a stretching buffer 3, the shell 1 is formed with a mounting channel, the mounting channel has an object side end a and an image side end b arranged opposite to each other along a first direction, a connecting portion 4 is provided in the mounting channel, the connecting portion 4 has a connecting platform 41, the at least two are installed in the mounting channel and are arranged in sequence along the first direction, the at least two include a first lens group arranged adjacent to the image side end b, the first lens group is movably installed in the mounting channel along the first direction, the first lens group has a mounting platform 22 arranged opposite to and spaced from the connecting platform 41 along the first direction, the mounting platform 22 is arranged adjacent to the image side end b, the stretching buffer 3 is clamped between the mounting platform 22 and the connecting platform 41, and its two ends are respectively connected to the connecting platform 41 and the mounting platform 22.

[0050] In the technical solution provided by the present invention, a connecting portion 4 is provided in the mounting channel, and the connecting portion 4 has a connecting platform 41. The at least two are installed in the mounting channel and arranged in sequence along the first direction. The at least two include a first lens group arranged adjacent to the image side end b. The first lens group is movably installed in the mounting channel along the first direction. The first lens group has a mounting platform 22 arranged opposite to and spaced from the connecting platform 41 along the first direction. The mounting platform 22 is arranged adjacent to the image side end b. Since a stretching buffer 3 is provided between the mounting platform 22 and the connecting platform 41, the two ends of the stretching buffer 3 are respectively connected to the connecting platform 41 and the mounting platform 22, so that when the first lens group is subjected to external force and moves toward the image side end b, under the action of the stretching buffer 3, the speed of the first lens group moving toward the image side end b is slowed down, thereby increasing the buffering time when the first lens group is subjected to force, reducing the force on the lens, increasing the structural strength of the lens, avoiding the problem of the first lens group colliding with the mobile phone body located at the image side end b due to excessive speed, and improving the service life of the telescopic lens device 100.

[0051] There are many types of the stretching buffer 3. For example, the stretching buffer 3 may include an elastic rope. Specifically, in an embodiment of the present application, the stretching buffer 3 includes a stretching spring, and the two ends of the stretching spring are respectively hung on the connecting platform 41 and the mounting platform 22. In this way, under the action of the stretching spring, the stretching spring provides the first lens group with an elastic force toward the object side end a, slowing down the speed of the first lens group moving toward the image side end b, and to a certain extent limiting the swinging stroke of the first lens group, thereby improving the quality of photographing.

[0052] In order to enable the first lens group to move smoothly along the first direction, a plurality of stretching buffer members 3 are provided, and the plurality of stretching buffer members 3 are arranged at circumferential intervals along the mounting channel. In this manner, the stretching buffer members 3 arranged at circumferential intervals along the mounting channel work together, so that the first lens group can move smoothly along the first direction, thereby preventing the first lens group from shaking.

[0053] Both ends of the tension spring have hooks. In one embodiment, both the connecting platform 41 and the mounting platform 22 are provided with mounting holes. The two ends of the tension spring are respectively mounted in the corresponding mounting holes. In this way, the tension spring is mounted firmly. Specifically, referring to Figure 2In an embodiment of the present application, the connecting platform 41 and / or the mounting platform 22 is provided with a card slot 5, and the card slot 5 is used to clamp the end of the tension spring. In this way, the card slot 5 limits the sliding stroke of the hooks at both ends of the tension spring relative to the connecting platform 41 and / or the mounting platform 22, so that the two ends of the tension spring are firmly installed. When the tension spring is deformed due to long-term use, the setting of the card slot 5 facilitates the replacement of the tension spring and is simple to operate.

[0054] Specifically, refer to Figure 1 and Figure 4 The first lens group includes a first mounting barrel 23, the first mounting barrel 23 is for mounting the lens 200, and the side of the first mounting barrel 23 is provided with a top plate 231 extending along its axial direction. The telescopic lens device 100 also includes a first driving assembly, the first driving assembly is installed in the mounting channel, the first driving assembly includes a driving plate 61 and a screw 62, the driving plate 61 is arranged to abut against the top plate 231 along the first direction, the driving plate 61 is arranged adjacent to the object side end a, and the driving plate 61 is penetrated by a screw along the first direction. The screw rod 62 is extended along the first direction, and the screw rod 62 is rotatably installed in the installation channel along the up-down axis and is threadedly connected to the threaded hole. In this way, when the screw rod 62 rotates clockwise, the screw rod 62 drives the driving plate 61 to move toward the image side end b, and the driving plate 61 pushes the top plate 231 to move toward the image side end b. Since the top plate 231 is connected to the first mounting barrel 23, the first mounting barrel 23 is moved toward the image side end b, thereby realizing the contraction of the telescopic lens. When the screw rod 62 rotates counterclockwise, the screw rod 62 drives the driving plate 61 to move toward the object side end a, and the driving plate 61 is separated from the top plate 231. Since the two ends of the stretching buffer 3 are respectively connected to the connecting platform 41 and the mounting platform 22, the mounting platform 22 is subjected to a pulling force toward the object side end a, thereby achieving the movement of the mounting platform 22 toward the object side end a and the extension of the telescopic lens barrel. When the telescopic lens barrel is in the extended state, it accidentally falls and the first lens group is subjected to external force to move toward the image side end b, which poses a risk of collision with the mobile phone body. The stretching spring provides the first lens group with an elastic force toward the object side end a, thereby reducing the speed at which the first lens group moves toward the mobile phone body, playing a buffering role, avoiding the problem of the first lens group colliding with the mobile phone body due to excessive speed, and improving the service life of the telescopic lens device 100.

[0055] It should be noted that, in the above embodiment, the screw rod 62 is rotated clockwise to drive the drive plate 61 toward the image side end b, and the screw rod 62 is rotated counterclockwise to drive the drive plate 61 toward the object side end a. Of course, in other embodiments, the screw rod 62 may be rotated counterclockwise to drive the drive plate 61 toward the image side end b, and the screw rod 62 may be rotated clockwise to drive the drive plate 61 toward the object side end a. Specifically, this application does not limit this.

[0056] Specifically, the mounting platform 22 is disposed on a side of the first mounting lens barrel 23 and adjacent to the image side end b. This configuration allows the first mounting lens barrel 23 to have a larger range of motion.

[0057] There are many ways to drive the screw rod 62 to rotate. For example, the output shaft of the drive motor can be directly connected to the screw rod 62 for driving. Specifically, in the embodiment of the present application, the first drive assembly also includes a drive motor 63 and a driven gear. The drive motor 63 has a drive shaft extending along the first direction, and the drive shaft is provided with a drive gear. The driven gear is mounted on the end of the screw rod 62 and meshes with the drive gear. With this arrangement, when the drive motor 63 is working, the drive shaft rotates, thereby driving the drive gear to rotate. Since the drive gear is meshed with the driven gear, the drive gear rotates to drive the driven gear to rotate. Since the driven gear is mounted on the screw rod 62, the screw rod 62 is rotated. With this arrangement, since the screw rod 62 is arranged side by side with the drive shaft, the installation space of the telescopic lens device 100 in the first direction is saved, and the stroke of the first lens group along the first direction is maximized.

[0058] In order to make the first mounting lens barrel 23 always move along the first direction, a guide structure is further provided between the first mounting lens barrel 23 and the housing 1. Figure 2 The guide structure includes a guide portion 71 extending along the first direction and a matching portion 72 adapted to the guide portion 71. One of the guide portion 71 and the matching portion 72 is provided on the housing 1, and the other is provided on the first mounting lens barrel 23. Through the matching installation of the guide portion 71 and the matching portion 72, the first mounting lens barrel 23 can always move along the first direction relative to the housing 1. The structure is simple and the effect is good.

[0059] There are many types of the guide portion 71 and the matching portion 72. For example, one of the guide portion 71 and the matching portion 72 can be configured as a guide groove extending along the first direction, and the other can be configured as a guide protrusion. Figure 2In the present application, the guide portion 71 is provided on the housing 1 and includes a guide column. The matching portion 72 is provided on the first mounting barrel 23 and includes a guide hole. With such a configuration, the guide column is inserted into the guide hole, thereby guiding the first mounting barrel 23 along the first direction. The structure is simple and easy to process.

[0060] Specifically, refer to Figures 5 to 8, the at least two lens groups also include a second lens group, the second lens group is installed in the installation channel, including a first lens barrel 24, a first driving sleeve 25 extending in one direction, the inner side wall of the first lens barrel 24 is formed with at least one first driving inclined groove 241, the first driving inclined groove 241 extends along the first direction, and is inclined along the circumference of the first lens barrel 24, the first driving inclined groove 241 has a guide side wall surface 2411, the first driving sleeve 25 is sleeved in the first lens barrel 24, and the first lens barrel 24 is rotatably arranged relative to the first driving sleeve 25, the first driving sleeve 25 is penetrated by at least one first elongated hole 251, the first elongated hole 251 extends along the first direction, the first movable lens barrel 26 is movably arranged along the first direction to drive the first lens group 300 to move along the first direction, the second movable lens barrel 27 is movably arranged along the first direction to drive the second lens group 400 to move along the first direction, and the first movable lens barrel 26 is sleeved on the first driving sleeve. 25, the second movable lens barrel 27 is sleeved in the first movable lens barrel 26, and the first movable lens barrel 26 is rotatable relative to the second movable lens barrel 27. At least one of the first movable lens barrel 26 and the second movable lens barrel 27 is provided with a first protrusion c. The first protrusion c passes through the first elongated hole 251 and cooperates with the first driving inclined groove 241. When the first lens barrel 24 rotates relative to the first driving sleeve 25, the first elongated hole 251 drives the first protrusion c to drive the first movable lens barrel 26 or the second movable lens barrel 27 to move along the first driving inclined groove 241. One end of the tension spring 28 is connected to the first movable lens barrel 26, and the other end is connected to the second movable lens barrel 27. The tension spring 28 is used to hold the first protrusion c against the guide side wall 2411 when the first protrusion c slides along the first driving inclined groove 241, wherein the guide side wall 2411 of the at least one first driving inclined groove 241 is set as a nonlinear curved surface in the circumferential direction of the first lens barrel 24. In this way, when the first lens barrel 24 rotates relative to the first driving sleeve 25, the inner side wall of the first elongated hole 251 abuts against the first protrusion c, so that the first protrusion c can move along the first driving inclined groove 241. Because the first driving groove extends along the first direction and is inclined along the circumference of the first lens barrel 24, the first movable lens barrel 26 or the second movable lens barrel 27 provided with the first protrusion c can rotate and telescopically move.

[0061] It should be noted that the moving trajectory of the first protrusion c is roughly defined by the shape of the side wall surface of the first driving inclined groove 241 . Therefore, the moving trajectory of the first protrusion c basically matches the shape of the guide side wall surface 2411 .

[0062] It is understandable that, referring to Figure 7 Since the tension spring 28 connects the first movable lens barrel 26 and the second movable lens barrel 27, the first movable lens barrel 26 and the second movable lens barrel 27 are always subjected to a force that moves them closer to each other. The first protrusion c abuts against the first driving inclined groove 241 at the inner side where the first movable lens barrel 26 and the second movable lens barrel 27 are close to each other. Therefore, the guide side wall surface 2411 is a side wall surface of the first driving inclined groove 241 at the inner side where the first movable lens barrel 26 and the second movable lens barrel 27 are close to each other.

[0063] In the technical solution provided by the present invention, the first movable lens barrel 26 and the second movable lens barrel 27 can be movably arranged along the first direction, and the two movable lens barrels can be arranged relatively far away from or close to each other. The tension spring 28 is provided to provide a tensioning force to the first movable lens barrel 26 and the second movable lens barrel 27, so that when the first protrusion c slides along the first driving inclined groove 241, the first protrusion c can always be in contact with the guide side wall surface 2411, and the position of the first lens group 300 or the second lens group 400 can be adjusted along with the nonlinear curved surface. When encountering a corner, the tension spring 28 provides a certain driving force to the first movable lens barrel 26 or the second movable lens barrel 27 to prevent the first protrusion c from staying in a dead angle, so as to solve the problem of not getting stuck when the lens is pressed or working when coping with different nonlinear movement forms.

[0064] Further, see Figures 7 to 9 In this embodiment, two first drive chute grooves 241 are provided, spaced apart in the first direction. The guide sidewall 2411 of one of the two first drive chute grooves 241 is provided with the nonlinear curved surface. The first drive sleeve 25 is provided with two first elongated holes 251. Each of the first movable lens barrel 26 and the second movable lens barrel 27 is provided with a connecting post, each extending through a corresponding first elongated hole 251 and engaging with a corresponding first drive chute 241. One of the two connecting posts forms the first protrusion c. With this arrangement, by providing two first drive chute grooves 241 on the inner sidewall of the first lens barrel 24, when the first lens barrel 24 and the first drive sleeve 25 rotate relative to each other, both connecting posts slide along the two first drive chute grooves 241, thereby driving the first movable lens barrel 26 and the second movable lens barrel 27 to extend and rotate forward and backward. This eliminates the need for a separate drive mechanism, resulting in a simpler and more compact structure.

[0065] It should be noted that the guide side wall surface 2411 of one of the two first driving inclined grooves 241 is provided with the nonlinear curved surface. Therefore, one of the first movable lens barrel 26 and the second movable lens barrel 27 moves nonlinearly during the forward and backward telescopic movement, so that the telescopic lens can achieve focusing of different focal length segments.

[0066] Specifically, in this embodiment, the nonlinear curved surface is provided on the guide sidewall 2411 of the rear-side first driving inclined groove 241 of the two first driving inclined grooves 241. With this arrangement, the second movable lens barrel 27 drives the second lens group 400 to achieve focusing, while the first movable lens barrel 26 drives the first lens group 300 to achieve focusing.

[0067] For details, please refer to Figure 6 In this embodiment, the guide sidewall surface 2411 of the first driving chute 241 includes a plurality of focusing surface segments 24111. The plurality of focusing surface segments 24111 are sequentially connected in the front-to-back direction, and each focusing surface segment 24111 is curved toward the first guide sidewall surface 2411. It will be understood that each focusing surface segment 24111 corresponds to a focal length range. The curvature of each focusing surface segment 24111 is set based on actual focusing parameters.

[0068] Furthermore, since the first lens barrel 24 is rotatably arranged relative to the first driving sleeve 25, please refer to Figure 8 and Figure 9In this embodiment, the second lens group further includes a second lens barrel 29 and a second driving sleeve 201, the second lens barrel 29 extending along the first direction, the inner side wall of the second lens barrel 29 being formed with a second driving inclined groove 291, the second driving inclined groove 291 extending along the first direction and being inclined along the circumference of the second lens barrel 29; the second driving sleeve 201 is sleeved in the second lens barrel 29, and the second lens barrel 29 is rotatable relative to the second driving sleeve 201, the second driving sleeve 201 is penetrated by a second elongated hole 2011, and the second elongated hole 2011 extends along the first direction; the first lens barrel 24 is provided with a second protrusion d, the second protrusion d passes through the second elongated hole 2011 and cooperates with the second driving inclined groove 291, so that when the second lens barrel 29 rotates relative to the second driving sleeve 201, the second elongated hole 2011 drives the second protrusion d to drive the first lens barrel 24 to move along the second driving inclined groove 291. In this way, when the second lens barrel 29 rotates relative to the second drive sleeve 201, the inner side wall of the second elongated hole 2011 abuts against the second protrusion d, so that the second protrusion d can move along the second drive inclined groove 291. Because the second drive groove extends along the first direction and is inclined along the circumference of the second lens barrel 29, the first lens barrel 24 provided with the second protrusion d can rotate and telescopically move.

[0069] Furthermore, in order to enable the first drive sleeve 25 to extend and retract synchronously with the first lens barrel 24, in this embodiment, a straight groove is further provided on the second lens barrel 29, and the straight groove extends along the first direction; the second drive sleeve 201 is also penetrated by a third elongated hole 2012, and the third elongated hole 2012 extends along the first direction and is inclined along the circumference of the second drive sleeve 201; the first drive sleeve 25 is provided with a third protrusion, and the third protrusion passes through the third elongated hole 2012 and cooperates with the straight groove, so that when the second lens barrel 29 rotates relative to the second drive sleeve 201, the third elongated hole 2012 drives the third protrusion to drive the first drive sleeve 25 to move along the straight groove. In this way, when the second lens barrel 29 rotates relative to the second driving sleeve 201, the inner side wall of the third elongated hole 2012 abuts against the third protrusion. Since the third elongated hole 2012 extends along the first direction and is inclined along the circumference of the second lens barrel 29, and the straight groove limits the two sides of the third protrusion, the third protrusion can move in the front-to-back direction, thereby enabling the first driving sleeve 25 to telescope synchronously with the first lens barrel 24.

[0070] It can be understood that the first driving sleeve 25 can only move forward and backward along the straight groove, while the first lens barrel 24 can be extended and retracted forward and backward and rotated, thereby achieving relative rotation between the first driving sleeve 25 and the first lens barrel 24.

[0071] Furthermore, the specific form of the second drive sleeve 201 being rotatably mounted on the second lens barrel 29 is not limited. In this embodiment, the inner side wall of the second lens barrel 29 is provided with a mounting groove extending along its circumference; the outer periphery of the second drive sleeve 201 is provided with a mounting protrusion e, which is arranged in the mounting groove so that the second drive sleeve 201 is rotatably mounted in the second lens barrel 29 and restricts the second drive sleeve 201 from moving in the first direction. The mounting protrusion e is also annular and is located at the rear end of the second drive sleeve 201. The mounting protrusion e is adapted to the mounting groove and is arranged in the mounting groove so that the second drive sleeve 201 is rotatably mounted in the second lens barrel 29 and restricts the second drive sleeve 201 from moving in the first direction. The mounting groove and the mounting protrusion e are both arranged at the rear end to avoid interference with the second drive chute 291.

[0072] Furthermore, in this embodiment, the second lens group further includes a driving mechanism 202 , and the driving mechanism 202 is used to drive the second driving sleeve 201 to rotate, so that the second driving sleeve 201 can rotate relative to the second lens barrel 29 .

[0073] Specifically, in this embodiment, the outer periphery of the second drive sleeve 201 is provided with a plurality of first teeth, and the plurality of first teeth are arranged circumferentially along the second drive sleeve 201; the drive mechanism 202 includes a rotating member and a drive motor, the rotating member is rotatably mounted on the second lens barrel 29 along the first direction axis, the rotating member is provided with a plurality of second teeth, and the plurality of second teeth are arranged circumferentially along the axis of the rotating member, and the plurality of second teeth are engaged with the plurality of first teeth; the drive motor is connected to the rotating member and is used to drive the rotating member to rotate. When the rotating member rotates, the plurality of second teeth are engaged with the plurality of first teeth, thereby driving the second drive sleeve 201 to rotate. The specific form of the drive motor is not limited, and can be a servo motor or a stepper motor.

[0074] Specifically, the specific method by which the drive motor drives the rotating shaft is not limited. The drive motor may be directly connected to the rotating shaft to drive the rotating shaft, or it may be driven by a gear transmission. In this embodiment, the drive mechanism 202 further includes a worm wheel and a worm, the worm wheel being disposed on the rotating member, the worm being connected to the main shaft of the drive motor, and the worm being meshed with the worm wheel. This arrangement can reduce the length of the second lens group in the first direction, facilitating miniaturization of the second lens group.

[0075] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A telescopic lens device, suitable for a mobile phone, characterized in that: The telescopic lens device comprises: The housing is formed with a mounting channel, the mounting channel having an object side end and an image side end oppositely disposed along a first direction, a connecting portion provided in the mounting channel, the connecting portion having a connecting platform; At least two lens groups are installed in the installation channel and are arranged in sequence along the first direction, the at least two lens groups include a first lens group arranged adjacent to the image side end, the first lens group is movably installed in the installation channel along the first direction, the first lens group has a mounting platform arranged opposite to and spaced from the connecting platform along the first direction, the mounting platform is arranged adjacent to the image side end; and a stretching buffer, sandwiched between the mounting platform and the connecting platform, with two ends connected to the connecting platform and the mounting platform respectively; The stretching buffer comprises a stretching spring, and both ends of the stretching spring are respectively hung on the connecting platform and the mounting platform; The connecting platform and / or the mounting platform are provided with a slot for clamping the end of the tension spring; The upper end surface of the connecting platform and the lower end surface of the mounting platform are provided with a clamping groove, and the clamping groove is used for clamping the end of the tension spring; The first lens group includes a first mounting barrel for mounting the lens, and a top plate is provided on the side of the first mounting barrel along its axial direction; The telescopic lens device further includes a first drive assembly, which is installed in the installation channel and includes: The driving plate is arranged to abut against the abutting plate along the first direction, the driving plate is arranged adjacent to the object side end, and a threaded hole is penetrated through the driving plate along the first direction.

2. The telescopic lens device according to claim 1, wherein: The first driving assembly further includes a screw rod extending along the first direction. The screw rod is rotatably installed along an up-down axis in the installation channel and is threadedly connected to the threaded hole.

3. The telescopic lens device according to claim 2, wherein: The mounting platform is arranged on a side portion of the first mounting lens barrel and is adjacent to the image side end.

4. The telescopic lens device according to claim 2, wherein: The first drive assembly further includes: A driving motor having a driving shaft extending along the first direction, wherein a driving gear is mounted on the driving shaft; The driven gear is sleeved on the end of the screw rod and meshes with the driving gear.

5. The telescopic lens device according to claim 2, wherein: A guide structure is further provided between the first mounting lens barrel and the shell, and the guide structure includes a guide portion extending along the first direction and a matching portion adapted to the guide portion. One of the guide portion and the matching portion is provided on the shell, and the other is provided on the first mounting lens barrel.

6. The telescopic lens device according to claim 5, wherein: The guide portion is provided on the housing and includes a guide column, and the matching portion is provided on the first mounting lens barrel and includes a guide hole.

7. The telescopic lens device according to claim 1, wherein: The at least two lens groups further include a second lens group, which is installed in the installation channel and includes: a first lens barrel extending along the first direction, wherein an inner sidewall of the first lens barrel is formed with at least one first driving inclined groove, the first driving inclined groove extending along the first direction and being inclined along the circumference of the first lens barrel, and the first driving inclined groove having a guiding sidewall surface; a first driving sleeve, sleeved in the first lens barrel, and the first lens barrel is rotatably arranged relative to the first driving sleeve, the first driving sleeve having at least one first elongated hole extending along a first direction; a first movable lens barrel and a second movable lens barrel, wherein the first movable lens barrel is movably arranged along a first direction to drive the first lens group to move along the first direction, and the second movable lens barrel is movably arranged along the first direction to drive the second lens group to move along the first direction, the first movable lens barrel is sleeved in the first driving sleeve, and the second movable lens barrel is sleeved in the first movable lens barrel, and the first movable lens barrel is rotatable relative to the second movable lens barrel, at least one of the first movable lens barrel and the second movable lens barrel is provided with a first protrusion, the first protrusion passes through the first elongated hole and cooperates with the first driving inclined groove, so that when the first lens barrel rotates relative to the first driving sleeve, the first elongated hole drives the first protrusion to drive the first movable lens barrel or the second movable lens barrel to move along the first driving inclined groove; and a tension spring, one end of which is connected to the first movable lens barrel and the other end of which is connected to the second movable lens barrel, the tension spring being used to hold the first protrusion against the guide side wall when the first protrusion slides along the first driving inclined groove; Wherein, the guide side wall surface of the at least one first driving inclined groove is set as a nonlinear curved surface in the circumferential direction of the first lens barrel.

8. A mobile phone, characterized in that: Comprising the telescopic lens device according to any one of claims 1 to 7.

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