Mobile terminal

Abstract

The utility model provides a mobile terminal, which comprises a terminal shell, a projector, a worm gear and a worm, and is characterized in that the projector is arranged in the terminal shell, and the side edge of the projector is provided with a built-in focusing gear; the worm gear is rotationally arranged relative to the terminal shell and is meshed with the focusing gear; the first end of the worm is meshed with the worm gear, and the second end of the worm extends out of the terminal shell so that a user can conduct focusing operation. According to the mobile terminal provided by the invention, the worm gear and the worm are matched for focusing, the operation is convenient, and the reduction ratio is relatively large.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile terminals, in particular to a mobile terminal with a projector. Background Art

[0002] Projection mobile terminals refer to terminals with integrated projection functions. Since micro-projection technology has been developed for several years and is relatively stable and mature, even with the addition of the projection function, the appearance has not changed significantly. The lens is one of the important components of projection mobile terminals.

[0003] The current projection mobile terminals mainly have the following problems: the projection distance of the mobile terminal is limited, and the originally adjusted focal length is easily changed due to vibration or accidental collision during the projection process, but the focus adjustment is inconvenient, which brings a very bad experience to the user. Utility Model Content

[0004] In view of the above problems, embodiments of the present utility model are proposed to provide a focusing system for projection that overcomes the above problems or at least partially solves the above problems.

[0005] The embodiment of the utility model discloses a focusing system for projection, the system is used for focusing of a projection mobile terminal, and comprises a terminal body, a projector, a focus adjustment handle and a reduction transmission gear;

[0006] A projector and a reduction transmission gear are arranged inside the terminal body, and the focus adjustment handle is arranged on one side of the terminal body;

[0007] A focusing gear is provided at one end of the focus adjustment handle, and a projection gear for focusing is provided at the bottom of the projector, the focusing gear is meshed with the reduction transmission gear, and the reduction transmission gear is meshed with the projection gear;

[0008] When the projector is focused, the focus handle is rotated, the focus gear of the focus handle drives the reduction transmission gear to rotate, the reduction transmission gear drives the projection gear to rotate, and the projector is focused.

[0009] Preferably, the terminal body includes a terminal housing and a terminal back cover;

[0010] The terminal housing and the terminal rear cover cooperate to form a space for accommodating the projector and the reduction transmission gear.

[0011] Preferably, the reduction transmission gear comprises a first trapezoidal gear and a second trapezoidal gear;

[0012] The first trapezoidal gear and the second trapezoidal gear are integrally formed; the lower bottom surface of the first trapezoidal gear is connected to the lower bottom surface of the second trapezoidal gear.

[0013] Preferably, the focus adjustment handle further includes a connecting rod;

[0014] One end of the connecting rod is connected to the focusing gear, and the outer ring of the connecting rod is provided with threads.

[0015] Preferably, it also includes a clamping ring for fixing the focus adjustment handle;

[0016] The clamping ring is arranged between the focus adjustment handle and the terminal housing.

[0017] Preferably, the retaining ring is an open circular ring, and the shape of the inner ring of the circular ring is adapted to the shape of the focus adjustment handle.

[0018] Preferably, it also includes a focusing waterproof ring;

[0019] The outer ring of the focus adjustment handle is provided with the focus adjustment waterproof ring.

[0020] Preferably, the focusing waterproof ring includes a first focusing waterproof ring and a second focusing waterproof ring;

[0021] The first focusing waterproof ring and the second focusing waterproof ring have the same shape.

[0022] Preferably, the projector is connected to the terminal body via screws.

[0023] The present invention also provides a mobile terminal, comprising:

[0024] Terminal housing;

[0025] A projector is arranged in the terminal housing, and the side of the projector has a self-contained focusing gear;

[0026] A worm gear, rotatably arranged relative to the terminal housing and meshing with the focusing gear;

[0027] A worm has a first end meshed with the worm wheel and a second end extending out of the terminal housing.

[0028] Preferably, the terminal housing comprises a pair of short frame bodies and a pair of long frame bodies connected to each other;

[0029] The short frame body is provided with a first insertion hole for inserting the built-in lens of the projector, and the long frame body is provided with a second insertion hole for inserting the worm; or

[0030] The short frame body is provided with a first plug-in hole for plugging the worm, and the long frame body is provided with a second plug-in hole for plugging the built-in lens of the projector.

[0031] Preferably, the terminal shell also includes an extension plate, which is connected to the short frame body and / or the long frame body, and the extension plate is further provided with a support plate, and the support plate is provided with a support hole, which is aligned with the second insertion hole, and the support hole and the second insertion hole respectively support the two ends of the worm.

[0032] Preferably, the extension plate is further provided with a shaft rod, and the worm gear is rotatably disposed on the shaft rod and is limited by a limiting member.

[0033] Preferably, the mobile terminal further comprises a main rib plate arranged in the terminal housing, the main rib plate is provided with a shaft, the worm gear is rotatably arranged on the shaft and limited by a limiting member.

[0034] Preferably, the worm wheel comprises an axially connected helical tooth portion and a spur tooth portion, the helical tooth portion meshes with the worm, and the spur tooth portion meshes with the focusing gear.

[0035] Preferably, a focus adjustment handle is disposed at the second end of the worm, and the focus adjustment handle is disc-shaped and has a plurality of tooth grooves disposed on the outer circumference.

[0036] Preferably, the worm gear includes a focus handle, a sealing assembly section, a spiral thread section, and a rotating section which are connected in sequence from the outside to the inside, and the diameters of the focus handle, the sealing assembly section, the spiral thread section, and the rotating section decrease in sequence. The focus handle is limitedly assembled on the outside of the second mounting hole, the sealing assembly section is inserted into the second mounting hole, the sealing assembly section is provided with a sealing groove for assembling a focusing waterproof ring, the spiral thread section is meshed with the worm wheel, and the rotating section is rotationally matched with the support hole.

[0037] Preferably, a clamping groove is provided between the sealing assembly section and the spiral thread section for assembling a clamping ring; or the rotating section is provided with a clamping ring groove for assembling a clamping ring.

[0038] Preferably, the long frame body is provided with a semi-enclosed retaining wall at the outer periphery of the second insertion hole.

[0039] Preferably, the mobile terminal is a mobile phone or a tablet computer.

[0040] The present application specifically includes the following advantages:

[0041] In the embodiment of the present application, compared with the prior art "focusing is inconvenient and brings a very bad user experience", the present application provides a solution of driving the reduction transmission gear by toggling the focus handle, specifically: a projector and a reduction transmission gear are arranged inside the terminal body, and the toggling focus handle is arranged on one side of the terminal body; a focus gear is arranged at one end of the toggling focus handle, and a projection gear for focusing is arranged at the bottom of the projector, and the focus gear is meshed with the reduction transmission gear, and the reduction transmission gear is meshed with the projection gear; when the projector focuses, the toggling focus handle rotates, and the focus gear of the toggling focus handle drives the reduction transmission gear to rotate, and the reduction transmission gear drives the projection gear to rotate, and the projector focuses. When the projected image or video of the projector is not clear, the toggling focus handle can be rotated to control the focal length of the projector. The projector, the reduction transmission gear, the toggling focus handle and the mobile terminal are fixed as one. The problem of projector focusing in the prior art is solved, and a mobile terminal projector and focusing are integrated, so that the mobile terminal projector can focus conveniently, quickly and accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the description of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0043] Figure 1 It is an exploded schematic diagram of a focusing system for projection of the utility model;

[0044] Figure 2 This is a schematic structural diagram of a reduction transmission gear for a focusing system for projection in the utility model;

[0045] Figure 3 This is a structural schematic diagram of a focus adjustment handle of a focus adjustment system for projection in the utility model;

[0046] Figure 4 This is a schematic structural diagram of a clamping ring for a focusing system for projection according to the utility model;

[0047] Figure 5 It is a partial structural schematic diagram of a focusing system for projection of the utility model;

[0048] Figure 6 It is a structural schematic diagram of a focusing system for projection of the utility model;

[0049] Figure 7 The utility model is a focusing system for projection Figure 6 A schematic cross-sectional structure diagram of ;

[0050] Figure 8 It is an exploded diagram of a partial component of the mobile terminal provided by the utility model;

[0051] Fig. 9 yes Figure 8 A schematic diagram of a local enlarged structure;

[0052] Fig.10 yes Figure 8 A schematic diagram of a local enlarged structure;

[0053] Fig.11 yes Figure 8 Schematic diagram of the local cross-section structure.

[0054] 2. Terminal housing; 8. Screws; 9. Projector; 11. Reduction transmission gear; 13. Snap ring; 14. Focus waterproof ring; 15. Focusing handle; 17. Terminal back cover; 21. Short frame body; 22. First insertion hole; 23. Long frame body; 24. Second insertion hole; 25. Extension plate; 26. Semi-enclosed retaining wall; 27. Support plate; 28. Support hole; 30. Worm gear; 31. Helical tooth portion; 32. Straight tooth portion; 33. Limiting piece; 40. Worm; 41. Focusing handle; 42. Sealing assembly section; 43. Spiral thread section; 44. Rotating section; 91. Focusing gear; 92. Built-in lens; 411. Tooth groove; 421. Sealing groove; 422. Card slot. DETAILED DESCRIPTION

[0055] In order to make the objects, features and advantages of the present application more obvious and understandable, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0056] By analyzing the prior art, the inventors found that the current mobile projection terminals mainly have the following problems: the projection distance of the mobile terminal is limited, and the originally adjusted focal length is easily changed due to vibration or accidental collision during the projection process, but the focus adjustment is inconvenient, which brings a very bad experience to the user.

[0057] With the improvement of quality of life and interest demands, the clarity requirements for outdoor projection products have increased significantly. By adjusting the image distance of the projector, the clarity can be improved and the sense of quality can be enhanced.

[0058] The purpose of this technology is to provide a toggle focus adjustment for a mobile terminal projector 9, and the focusing method includes a terminal housing 2, a reduction transmission gear 11, and a toggle focus adjustment handle 15, etc. Among them, the toggle focus adjustment handle 15 and the reduction transmission gear 11 are embedded in the mobile terminal and mesh with the projector 9 module gears, and are fixed to the terminal as a whole. The present invention solves the focusing problem of the mobile terminal projector 9 in the prior art by embedding the projector 9, the toggle focus adjustment handle 15 and the reduction transmission gear 11 in the mobile terminal so that they are fixed to the mobile terminal as a whole, and realizes a mobile terminal projector 9 and focusing integration, so that the mobile terminal projector 9 can focus conveniently, quickly and accurately.

[0059] In the embodiment of the present application, compared with the prior art that "focusing is inconvenient and brings a very bad experience to users", the present application provides a solution of driving the reduction transmission gear 11 by toggling the focus handle 15, specifically: the terminal body is provided with a projector 9 and a reduction transmission gear 11, and the toggling focus handle 15 is arranged on one side of the terminal body; one end of the toggling focus handle 15 is provided with a focus gear, and the bottom of the projector 9 is provided with a projection gear for focusing, and the focus gear is meshed with the reduction transmission gear 11, and the reduction transmission gear 11 is meshed with the projection gear; when the projector 9 focuses, the toggling focus handle 15 rotates, and the focus gear of the toggling focus handle 15 drives the reduction transmission gear 11 to rotate, and the reduction transmission gear 11 drives the projection gear to rotate, and the projector 9 focuses. When the projector 9 projects an unclear image or video, the toggling focus handle 15 can be rotated to control the focal length of the projector 9. The projector 9, the reduction transmission gear 11, and the toggling focus handle 15 are fixed to the mobile terminal as a whole. The focusing problem of the mobile terminal projector 9 in the prior art is solved, and the mobile terminal projector 9 and focusing are integrated, so that the focusing of the mobile terminal projector 9 is convenient, fast and accurate.

[0060] It should be noted that the projection mobile terminal is an electronic projection product such as a mobile phone projection or a tablet projection.

[0061] Reference Figure 1-7, shows a schematic structural diagram of the focusing system for projection of the utility model, which may specifically include the following structure: including a terminal body, a projector 9, a focus adjustment handle 15 and a reduction transmission gear 11; the terminal body is provided with a projector 9 and a reduction transmission gear 11, and the focus adjustment handle 15 is arranged on one side of the terminal body; one end of the focus adjustment handle 15 is provided with a focus gear, and the bottom of the projector 9 is provided with a projection gear for focusing, the focus gear is meshed with the reduction transmission gear 11, and the reduction transmission gear 11 is meshed with the projection gear; when the projector 9 is focused, the focus adjustment handle 15 is rotated, the focus gear of the focus adjustment handle 15 drives the reduction transmission gear 11 to rotate, the reduction transmission gear 11 drives the projection gear to rotate, and the projector 9 is focused.

[0062] Next, a focusing system for projection in this exemplary embodiment will be further described.

[0063] In one embodiment of the present application, a projector 9 and a reduction transmission gear 11 are provided inside the terminal body, and the focus adjustment handle 15 is arranged on one side of the terminal body; the terminal body includes a terminal shell 2 and a terminal back cover 17; the terminal shell 2 and the terminal back cover 17 cooperate to form a space for accommodating the projector 9 and the reduction transmission gear 11.

[0064] In a specific embodiment, a battery is also provided at the lower part of the terminal shell 2, and the battery is used to power the entire device. The battery is electrically connected to the projector 9, and the projector 9 is provided on the upper part of the battery. The terminal shell 2 and the terminal back cover 17 have the same overall shape; the terminal back cover 17 and the terminal shell 2 form a projection mobile terminal.

[0065] In one embodiment of the present application, a projection gear for focusing is provided at the bottom of the projector 9. The overall volume of the projector 9 is small, so that it can be placed in the terminal housing 2 for easy carrying. The projection gear is meshed with the reduction transmission gear 11, that is, the projection gear is adapted to the reduction transmission gear, so that the projection gear can be driven to rotate when the reduction transmission gear 11 rotates, thereby focusing the projector 9. The projector 9 is connected to the terminal body by screws 8. A plurality of screws 8 are provided to fix the projector 9 at a preset position.

[0066] In one embodiment of the present application, the reduction transmission gear 11 includes a first trapezoidal gear and a second trapezoidal gear; the first trapezoidal gear and the second trapezoidal gear are integrally formed; the lower bottom surface of the first trapezoidal gear is connected to the lower bottom surface of the second trapezoidal gear.

[0067] As an example, the first trapezoidal gear is adapted to the projection gear, and the second trapezoidal gear is adapted to the focusing gear; the area of ​​the upper bottom surface of the first trapezoidal gear is smaller than the area of ​​the lower bottom surface of the first trapezoidal gear, the area of ​​the upper bottom surface of the second trapezoidal gear is smaller than the area of ​​the lower bottom surface of the second trapezoidal gear, and the shape of the lower bottom surface of the first trapezoidal gear is the same as the lower bottom surface of the second trapezoidal gear.

[0068] In one embodiment of the present application, the focus adjustment handle 15 further includes a connecting rod; one end of the connecting rod is connected to the focus gear, and the outer ring of the connecting rod is provided with a thread. The connecting rod and the focus gear are integrally formed, and the focus adjustment handle 15 is in the shape of a screw 8 as a whole, and the focus gear is connected to the connecting rod.

[0069] In one embodiment of the present application, a clamping ring 13 for fixing the focus adjustment handle 15 is further included; the clamping ring 13 is arranged between the focus adjustment handle 15 and the terminal housing 2 .

[0070] As an example, the clamp ring 13 is an open ring, the inner ring of which is adapted to the shape of the focus adjustment handle 15, and the clamp ring 13 fixes the focus adjustment handle 15 on the terminal housing 2. One side of the clamp ring 13 is open.

[0071] In one embodiment of the present application, a focusing waterproof ring 14 is further included; the outer ring of the focus adjustment handle 15 is provided with the focusing waterproof ring 14. The focusing waterproof ring 14 includes a first focusing waterproof ring 14 and a second focusing waterproof ring 14; the first focusing waterproof ring 14 and the second focusing waterproof ring 14 have the same shape. The focusing waterproof ring 14 is a silicone focusing waterproof ring 14.

[0072] like Figures 8 to 11 As shown, the present application provides a mobile terminal, which includes a terminal housing 2, a projector 9, a worm gear 30, and a worm 40. The mobile terminal can be a mobile phone (for example, a relatively large three-proof mobile phone) or a tablet computer. The mobile terminal also includes other conventional functional components such as a battery and a main control circuit board, which are not related to the invention point and are not described here.

[0073] The projector 9 is arranged in the terminal housing 2, and the side of the projector 9 has a self-contained focus gear 91, the worm wheel 30 is rotatably arranged relative to the terminal housing 2 and meshes with the focus gear 91, the first end of the worm 40 meshes with the worm wheel 30, and the second end of the worm 40 extends out of the terminal housing 2. By rotating the worm 40 outside the mobile terminal, the worm wheel 30 and the focus gear 91 are driven in sequence, thereby achieving fine adjustment of the focal length, and since the worm wheel 30 only rotates one tooth when the worm 40 rotates one circle, a larger reduction ratio can be obtained, thereby achieving precise fine adjustment of the focal length.

[0074] Specifically, Figure 8 , Fig. 9 As shown, the terminal housing 2 can be formed by plastic integral injection molding, and the terminal housing 2 includes a pair of short frame bodies 21 and a pair of long frame bodies 23 connected to each other, the short frame body 21 is provided with a first plug-in hole 22 for plugging in the built-in lens 92 of the projector 9, and the long frame body 23 is provided with a second plug-in hole 24 for plugging in the worm 40. The first plug-in hole 22 and the second plug-in hole 24 are arranged near the upper right corner of the mobile terminal. Of course, in other embodiments, the short frame body 21 can also be provided with a first plug-in hole 22 for plugging in the worm 40, and the long frame body 23 can be provided with a second plug-in hole 24 for plugging in the built-in lens 92 of the projector 9.

[0075] Furthermore, the terminal shell 2 also includes an extension plate 26, which is integrally connected to the short frame body 21 and / or the long frame body 23. The extension plate 26 is further provided with a support plate 27, and the support plate 27 is provided with a support hole 28. The support hole 28 is aligned with the second insertion hole 24, and the support hole 28 and the second insertion hole 24 respectively support the two ends of the worm 40.

[0076] The extension plate 26 is further provided with a shaft (not shown in the figure), and the worm gear 30 is rotatably arranged on the shaft and through the stopper 33 (see Fig.11 The limiting member 33 may be a screw.

[0077] The mobile terminal also includes a main rib plate (not shown) arranged in the terminal shell 2. The main rib plate can be an integrally formed metal plate. The main rib plate is provided with a shaft rod, and the shaft rod can pass through the extension plate 26. The worm gear 30 is rotatably arranged on the shaft rod and limited by a limit member 33. The limit member 33 can be a screw, a rivet, etc.

[0078] In the embodiment of the present application, the worm wheel 30 includes an axially connected helical tooth portion 31 and a spur tooth portion 32 , the helical tooth portion 31 meshes with the worm 40 , and the spur tooth portion 32 meshes with the focusing gear 91 .

[0079] In one embodiment, a focus adjustment handle 41 is disposed at the second end of the worm 40 . The focus adjustment handle 41 is disc-shaped and has a plurality of tooth grooves 411 disposed on the outer circumference thereof.

[0080] In another embodiment, the worm 40 includes a focus handle 41, a sealing assembly section 42, a spiral thread section 43, and a rotating section 44 which are connected in sequence from the outside to the inside. The diameters of the focus handle 41, the sealing assembly section 42, the spiral thread section 43, and the rotating section 44 decrease in sequence. The focus handle 41 is limitedly assembled on the outside of the second insertion hole 24, the sealing assembly section 42 is inserted into the second insertion hole 24, the sealing assembly section 42 is provided with a sealing groove 421 for assembling the focusing waterproof ring 14, the spiral thread section 43 is meshed with the worm wheel 30, and the rotating section 44 is rotationally matched with the support hole 28.

[0081] A clamping groove 421 is also provided between the sealing assembly section 42 and the spiral thread section 43 for assembling the clamping ring 13, and the clamping ring 13 can be clamped on the inner side of the long frame body 23. Alternatively, the rotating section 44 is provided with a clamping ring groove for assembling the clamping ring 13, and the clamping ring 13 can be clamped on the side of the support plate 27 away from the second insertion hole 24.

[0082] Preferably, the long frame body 23 is provided with a semi-enclosed baffle wall 25 on the outer periphery of the second insertion hole 24, and the semi-enclosed baffle wall 25 can prevent the focus handle 41 from being easily touched. The user can rotate the focus handle 41 through the opening part of the semi-enclosed baffle wall 25, and the opening part can be facing the rear end of the mobile terminal, that is, the end opposite to the built-in lens 92 of the inserted projector 9.

[0083] Although the preferred embodiments of the utility model embodiments have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the utility model embodiments.

[0084] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0085] The above is a detailed introduction to a focusing system for projection provided by the present invention. Specific examples are used in this article to illustrate the principle and implementation method of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A mobile terminal, characterized in that: The mobile terminal comprises: Terminal housing (2); A projector (9) is arranged in the terminal housing (2), and the side of the projector (9) has a self-contained focusing gear (91); A worm gear (30) is rotatably arranged relative to the terminal housing (2) and meshes with the focusing gear (91); A worm (40) has a first end meshing with the worm wheel (30) and a second end extending out of the terminal housing (2).

2. The mobile terminal according to claim 1, characterized in that: The terminal housing (2) comprises a pair of short frame bodies (21) and a pair of long frame bodies (23) connected to each other; The short frame body (21) is provided with a first insertion hole (22) for inserting a built-in lens (92) of the projector (9), and the long frame body (23) is provided with a second insertion hole (24) for inserting the worm (40); or The short frame body (21) is provided with a first insertion hole (22) for inserting the worm (40), and the long frame body (23) is provided with a second insertion hole (24) for inserting the built-in lens (92) of the projector (9).

3. The mobile terminal according to claim 2, characterized in that: The terminal housing (2) further comprises an extension plate (26), wherein the extension plate (26) is connected to the short frame body (21) and / or the long frame body (23), and the extension plate (26) is further provided with a support plate (27), wherein the support plate (27) is provided with a support hole (28), wherein the support hole (28) is aligned with the second insertion hole (24), and the support hole (28) and the second insertion hole (24) respectively support the two ends of the worm (40).

4. The mobile terminal according to claim 3, characterized in that: The extension plate (26) is further provided with a shaft rod, and the worm wheel (30) is rotatably disposed on the shaft rod and is limited in position by a limiting member (33).

5. The mobile terminal according to claim 1, characterized in that: The mobile terminal also includes a main rib plate arranged in the terminal housing (2), the main rib plate being provided with a shaft, and the worm gear (30) being rotatably arranged on the shaft and limited by a limiting member (33).

6. The mobile terminal according to claim 1, characterized in that: The worm wheel (30) comprises an axially connected helical tooth portion (31) and a spur tooth portion (32); the helical tooth portion (31) meshes with the worm (40), and the spur tooth portion (32) meshes with the focusing gear (91).

7. The mobile terminal according to claim 3, characterized in that: The worm (40) comprises a focus adjustment handle (41), a sealing assembly section (42), a spiral thread section (43), and a rotating section (44) which are sequentially connected from the outside to the inside. The diameters of the focus adjustment handle (41), the sealing assembly section (42), the spiral thread section (43), and the rotating section (44) decrease sequentially. The focus adjustment handle (41) is limitedly assembled on the outside of the second insertion hole (24). The sealing assembly section (42) is inserted into the second insertion hole (24). The sealing assembly section (42) is provided with a sealing groove (421) for assembling a focusing waterproof ring (14). The spiral thread section (43) is meshed with the worm wheel (30). The rotating section (44) is rotationally matched with the support hole (28).

8. The mobile terminal according to claim 7, characterized in that: A clamping groove (422) is also provided between the sealing assembly section (42) and the spiral thread section (43) for assembling a clamping ring (13); or the rotating section (44) is provided with a clamping ring groove for assembling a clamping ring (13).

9. The mobile terminal according to claim 2, characterized in that: The terminal housing (2) is provided with a semi-enclosed retaining wall (25) on the outer periphery of the second insertion hole (24).

10. The mobile terminal according to claim 1, characterized in that: The mobile terminal is a mobile phone or a tablet computer.

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