CN110602357B - Camera telescoping device and mobile terminal - Google Patents
Camera telescoping device and mobile terminal Download PDFInfo
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- CN110602357B CN110602357B CN201910795001.2A CN201910795001A CN110602357B CN 110602357 B CN110602357 B CN 110602357B CN 201910795001 A CN201910795001 A CN 201910795001A CN 110602357 B CN110602357 B CN 110602357B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
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Abstract
The invention discloses a camera telescoping device and a mobile terminal applying the same. Wherein, camera telescoping device includes: mounting a plate; the driving mechanism comprises a motor, a worm wheel and a worm, the motor is arranged on the mounting plate, the worm wheel is meshed with the worm, and the worm is in transmission connection with an output part of the motor; the transmission gear is coaxially arranged with the turbine and is connected with the turbine; the connecting piece comprises a rack part and a connecting part which are connected, the rack part is movably arranged on the mounting plate and is in transmission connection with the transmission gear, and the connecting part is used for connecting the camera; the motor drives the worm to rotate, the worm rotates to drive the worm wheel to rotate, the worm wheel rotates to drive the transmission gear to rotate, and the transmission gear rotates to drive the connecting piece to move, so that the camera extends out or retracts. The technical scheme of the invention can realize the expansion of the camera in the mobile terminal, thereby increasing the screen occupation ratio of the mobile terminal.
Description
Technical Field
The invention relates to the technical field of mobile terminal cameras, in particular to a camera telescoping device and a mobile terminal applying the same.
Background
With the increasing requirements of consumers on the quality, technology and appearance of the intelligent mobile terminal, the high screen ratio of the intelligent mobile terminal has become an important development direction. In order to improve intelligent terminal's high screen and account for than, set up the camera into extending structure usually, under the normality, the camera is located the mobile terminal casing and hides in the back of screen, when needs use the camera, stretches out the camera outside the screen, uses in the completion back again with the camera withdrawal casing in, the camera does not occupy the space of screen like this, can realize that the high screen accounts for than. Therefore, it is extremely important to reasonably design the camera scalable structure to achieve a high screen ratio of the mobile terminal.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a camera telescoping device and a mobile terminal, aiming at realizing the telescoping of a camera in the mobile terminal so as to increase the screen occupation ratio of the mobile terminal.
In order to achieve the above object, the present invention provides a camera retracting device, comprising: mounting a plate; the driving mechanism comprises a motor, a worm wheel and a worm, the motor is mounted on the mounting plate, the worm wheel is meshed with the worm, and the worm is in transmission connection with an output part of the motor; the transmission gear is coaxially arranged with the turbine and is connected with the turbine; the connecting piece comprises a rack part and a connecting part which are connected, the rack part is movably arranged on the mounting plate and is in transmission connection with the transmission gear, and the connecting part is used for connecting a camera; the motor drives the worm to rotate, the worm rotates to drive the worm wheel to rotate, the worm wheel rotates to drive the transmission gear to rotate, and the transmission gear rotates to drive the connecting piece to move, so that the camera extends out or retracts.
Optionally, the motor is a direct drive motor, an output portion of the direct drive motor is in transmission connection with the worm, a moving direction of the connecting piece is parallel to the surface of the mounting plate, and an axis of the output portion of the direct drive motor is parallel to the surface of the mounting plate.
Optionally, an installation groove is formed in the output portion of the direct drive motor, and one end of the worm is fixedly connected to the groove wall of the installation groove through a key.
Optionally, the mounting plate is provided with a motor fixing seat, and the motor is mounted on the motor fixing seat.
Optionally, the mounting plate is provided with a bearing mounting seat, one end of the worm, which is far away from the motor, is sleeved with a bearing, and the bearing is mounted on the bearing mounting seat; and/or the inner ring of the turbine is provided with a connecting groove, one side of the transmission gear, which faces the turbine, is provided with a fixed part, and the fixed part is inserted into the connecting groove.
Optionally, the deployment pitch angle of the worm is defined as β, the friction angle of the worm wheel and the worm contact is Φ, β < Φ.
Optionally, the camera telescoping device further comprises a gear set, an input end of the gear set is in transmission connection with the transmission gear, and an output end of the gear set is in transmission connection with the rack portion.
Optionally, the gear set includes a first gear and a second gear, both of which are rotatably disposed on the mounting plate, the first gear is located on a side of the transmission gear facing away from the worm, and the second gear is located on a side of the first gear facing away from the transmission gear; the first gear comprises a first sub gear and a second sub gear which are coaxially arranged and connected, the diameter of the first sub gear is larger than that of the second sub gear, and the second sub gear is arranged close to the mounting plate; the second gear comprises a third sub gear and a fourth sub gear which are coaxially arranged and connected, the diameter of the third sub gear is smaller than that of the fourth sub gear, and the fourth sub gear is arranged close to the mounting plate; the transmission gear is meshed with the first sub-gear, the second sub-gear is meshed with the fourth sub-gear, and the third sub-gear is meshed with the rack portion.
Optionally, the camera telescoping device further includes a guide member, the guide member is mounted on the mounting plate and is provided with a guide groove, an opening of the guide groove faces the transmission gear and extends along a moving direction of the connecting member, the rack portion is movably accommodated in the guide groove, the connecting portion is disposed on one side of the rack portion, which is away from the transmission gear, and penetrates through the guide groove and is exposed along a side wall of the moving direction of the connecting member.
Optionally, the camera telescoping device still includes the housing, the housing cover is located the mounting panel, just the housing the mounting panel reaches the guide encloses to close and forms the holding chamber, actuating mechanism with drive gear all locates the holding intracavity.
Optionally, the driving mechanism further comprises a driving gear, and the driving gear is sleeved on an output shaft of the motor; one pot head of worm is equipped with connecting gear, connecting gear with drive gear meshing is connected.
The invention also provides a mobile terminal, which comprises a camera and a camera telescoping device, wherein the camera telescoping device comprises: mounting a plate; the driving mechanism comprises a motor, a worm wheel and a worm, the motor is mounted on the mounting plate, the worm wheel is meshed with the worm, and the worm is in transmission connection with an output part of the motor; the transmission gear is coaxially arranged with the turbine and is connected with the turbine; the connecting piece comprises a rack part and a connecting part which are connected, the rack part is movably arranged on the mounting plate and is in transmission connection with the transmission gear, and the connecting part is used for connecting a camera; the motor drives the worm to rotate, the worm rotates to drive the worm wheel to rotate, the worm wheel rotates to drive the transmission gear to rotate, and the transmission gear rotates to drive the connecting piece to move so as to enable the camera to extend or retract; the camera is connected to the connecting part of the connecting piece of the camera telescoping device.
Optionally, one side of the camera, which faces the camera expansion device, is provided with an elastic member, and the connecting portion is connected to one end of the elastic member, which is far away from the camera.
According to the technical scheme, the driving mechanism comprises a motor, a worm wheel and a worm, the worm wheel and the worm are in meshed connection, the worm is fixedly connected to an output portion of the motor, a transmission gear is arranged at the same time and is coaxially arranged with the worm wheel and connected with the worm wheel, the transmission gear is meshed with a rack portion of a connecting piece, and a connecting portion of the connecting piece is used for being connected with a camera of the mobile terminal. Therefore, when the camera needs to be used, the motor drives the worm to rotate, the worm rotates to drive the worm wheel to rotate, the worm wheel rotates to drive the transmission gear to rotate, and the transmission gear rotates to drive the connecting piece to move so that the camera extends out of the screen; after the use is accomplished, motor drive back drive worm rotates, and then drives connecting piece reverse movement to make in the camera withdrawal casing and hide in the back of screen, can protect the camera like this, in order to avoid leading to the camera to take place to damage because of collision or the unexpected condition of friction, and the screen needn't be camera headspace, can increase mobile terminal's screen and account for the ratio. According to the technical scheme, a transmission mode of the worm gear and the worm gear is adopted, a large transmission ratio can be obtained, the meshing of the teeth of the worm gear and the worm gear is line contact, and the bearing capacity is high. And the driving mechanism, the transmission gear and the connecting piece are all arranged on the mounting plate, so that the mounting stability of the driving mechanism, the transmission gear and the connecting piece can be ensured, the reliability of the telescopic operation of the camera is ensured, and the parts have compact structures and high transmission efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the mobile terminal according to the present invention after a camera expansion device and a camera are assembled;
FIG. 2 is a schematic view of a partial structure of a mobile terminal in which a camera expansion device is connected with a camera;
FIG. 3 is a schematic diagram of an exploded structure of a camera telescoping device;
FIG. 4 is a schematic view of a partial structure of a camera telescoping device;
FIG. 5 is a schematic view of a driving mechanism in a camera telescoping device with a viewing angle;
FIG. 6 is a schematic cross-sectional view of the assembled turbine and transmission gear of the camera telescoping device;
fig. 7 is a partial schematic structural view of another embodiment of the camera telescoping device of the invention.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a camera telescoping device 100, which is applied to a mobile terminal.
Referring to fig. 1 to 3, in an embodiment of the camera retracting device 100 of the present invention, the camera retracting device 100 includes: a mounting plate 10; the driving mechanism 20 comprises a motor 21, a worm wheel 23 and a worm 22, the motor 21 is mounted on the mounting plate 10, the worm wheel 23 is meshed with the worm 22, and the worm 22 is in transmission connection with an output part of the motor 21; the transmission gear 30 is coaxially arranged with the turbine 23 and is connected with the turbine 30; the connecting piece 70 comprises a rack part 71 and a connecting part 73 which are connected, the rack part 71 is movably arranged on the mounting plate 10 and is in transmission connection with the transmission gear 30, and the connecting part 73 is used for connecting the camera 200; the motor 21 drives the worm 22 to rotate, the worm 22 rotates to drive the worm wheel 23 to rotate, the worm wheel 23 rotates to drive the transmission gear 30 to rotate, and the transmission gear 30 rotates to drive the connecting piece 70 to move, so that the camera 200 extends or retracts.
Specifically, the mounting plate 10 is substantially in a flat plate shape, the driving mechanism 20 includes a motor 21, a worm wheel 23 and a worm 22, the motor 21 is generally mounted on the surface of the mounting plate 10, and the mounting manner of the motor 21 may be screw fixing, snap fixing or reasonable and effective mounting and fixing manner; of course, the motor 21 may be disposed through the mounting plate 10. The motor 21 may be a rotary motor 21, a flat motor 21, or another type of motor 21. The axis of the output portion of the motor 21 may be perpendicular to the plate surface of the mounting plate 10, or may be parallel to the plate surface of the mounting plate 10. Generally, one end of the worm 22 is in transmission connection with an output part of the motor 21, and if the output part is an output shaft, the worm 22 can be fixedly connected to the output shaft of the motor 21 through a coupling; if the output part is formed with a mounting groove, the worm 22 can be directly inserted and fixed in the mounting groove to realize the transmission connection of the two. The worm wheel 23 is meshed with the worm 22, so that the motor 21 drives the worm 22 to rotate to drive the worm wheel 23 to drive, a transmission mode of the worm wheel 23 and the worm 22 is adopted, a large transmission ratio can be obtained, and the worm wheel 23 and the worm 22 are meshed into a line contact, so that the bearing capacity is high. The transmission gear 30 and the turbine 23 are coaxially arranged and connected with each other, and the mounting manner may be that the surface of the mounting plate 10 is fixedly provided with the first mounting shaft 13, the first mounting shaft 13 is arranged perpendicular to the plate surface of the mounting plate 10, and the transmission gear 30 and the turbine 23 are fixedly connected and then sleeved on the first mounting shaft 13 as a whole and can rotate around the first mounting shaft 13. The transmission gear 30 is located on the side of the turbine 23 opposite to the mounting plate 10 and is in transmission connection with the rack portion 71 of the connecting member 70, and the connecting portion 73 of the connecting member 70 is used for connecting the camera 200. With such an arrangement, the worm 22 driven by the motor 21 rotates to drive the worm wheel 23 to rotate, the worm wheel 23 rotates to drive the transmission gear 30 to rotate, and the transmission gear 30 rotates to drive the connecting piece 70 to move, so that the camera 200 makes telescopic movement, where the moving direction of the connecting piece 70 may be parallel to the plate surface of the mounting plate 10, or may be perpendicular to the plate surface of the mounting plate 10, which is not limited herein. In a normal state, the camera 200 is located in the shell of the mobile terminal and is hidden on the back of the screen, so that the camera 200 can be protected to avoid the damage of the camera 200 caused by collision or friction accidents, meanwhile, the camera 200 does not need to reserve space for the camera 200, and the screen occupation ratio of the mobile terminal can be increased. When the camera 200 needs to be used, the driving mechanism 20 is started to drive the transmission gear 30 to rotate and drive the connecting piece 70 to move, so that the camera 200 extends out of the screen; when the use is completed, the driving mechanism 20 is started again to reversely rotate the transmission gear 30 and drive the connecting member 70 to reversely move, so that the camera 200 retracts into the housing.
In order to facilitate the mounting of the motor 21 and simplify the design of the mounting plate 10, the motor 21 is generally mounted on the surface of the mounting plate 10. In order to ensure that the transmission gear 30 and the turbine 23 do not move greatly in the axial direction of the first mounting shaft 13 during the rotation process, the first positioning sleeves 16 are sleeved at both ends of the first mounting shaft 13.
Therefore, it can be understood that in the technical solution of the present invention, the driving mechanism 20 adopts the motor 21, the worm wheel 23 and the worm 22 are engaged and connected, and the worm 22 is fixedly connected to the output portion of the motor 21, and the transmission gear 30 is provided, the transmission gear 30 is coaxially provided and connected with the worm wheel 23, the transmission gear 30 is engaged and connected with the rack portion 71 of the attachment 70, and the connecting portion 73 of the attachment 70 is used for connecting the camera 200 of the mobile terminal. Thus, when the camera 200 needs to be used, the motor 21 drives the worm 22 to rotate, the worm 22 rotates to drive the worm wheel 23 to rotate, the worm wheel 23 rotates to drive the transmission gear 30 to rotate, and the transmission gear 30 rotates to drive the connecting piece 70 to move, so that the camera 200 extends out of the screen; after the use is accomplished, motor 21 drive back drive worm 22 rotates, and then drives connecting piece 70 reverse movement to make camera 200 retract in the casing and hide in the back of screen, can protect camera 200 like this, in order to avoid leading to camera 200 to take place to damage because of collision or the unexpected condition of friction, and the screen need not be for camera 200 headspace, can increase mobile terminal's screen and account for the ratio. According to the technical scheme, the worm wheel 23 and the worm 22 are in a gear transmission mode, a large transmission ratio can be obtained, the teeth of the worm wheel 23 and the worm 22 are meshed in a line contact mode, and the bearing capacity is high. In addition, the driving mechanism 20, the transmission gear 30 and the connecting piece 70 are all mounted on the mounting plate 10, so that not only can the mounting stability of the driving mechanism, the transmission gear 30 and the connecting piece 70 be ensured, and the reliability of the telescopic operation of the camera 200 be ensured, but also the components and parts have compact structures and high transmission efficiency.
Alternatively, the motor 21 is a direct drive motor, the output of which is drivingly connected to the worm 22, the moving direction of the connecting member 70 is parallel to the surface of the mounting plate 10, and the axis of the output of the direct drive motor is parallel to the surface of the mounting plate 10.
The motor 21 is a direct drive motor, which has a small size, is convenient to install and operate, and can relatively reduce the overall size of the camera telescoping device 100. The direct drive motor comprises a fixed part and an output part, the fixed part is arranged on the surface of the mounting plate 10, the output part is rotatably connected to the fixed part, and one end of the worm 22 is fixedly connected to the output part, so that the direct drive motor can drive the worm 22 to drive. The moving direction of the connecting member 70 is parallel to the plate surface of the mounting plate 10, and the axis of the output part of the direct drive motor is also parallel to the plate surface of the mounting plate 10, so that the size of the camera telescoping device 100 can be effectively reduced, and the thickness of the mobile terminal can be effectively reduced. Meanwhile, the arrangement can enable the structure of each part to be more compact so as to ensure higher transmission efficiency. It should be noted that the axis of the output portion of the direct drive motor may be perpendicular to the moving direction of the connecting member 70, and may also be parallel to the moving direction of the connecting member 70, which is not limited herein.
Further, the output part of the direct drive motor is provided with a mounting groove (not labeled), and one end of the worm 22 is fixedly connected to the groove wall of the mounting groove through a key.
Specifically, the mounting groove sets up in the middle part of output, and the protruding key that is equipped with of internal face of mounting groove, and the one end surface of worm 22 is provided with the keyway, and during the assembly, the tip of worm 22 is inserted and is located in the mounting groove to through the cooperation fixed connection of key and keyway in the cell wall of mounting groove, alright realize worm 22 like this and directly drive the fixed connection of motor output. Of course, in some other embodiments, the inner wall surface of the mounting groove may be provided with a key groove, and one end surface of the worm 22 is provided with a key in a protruding manner, so that the worm 22 is inserted into the mounting groove and the fixed connection between the key and the key groove can also be achieved through the matching of the key and the key groove. This connected mode adopts the fixed mode of key, easy operation and effective, and certainly, the connected mode of the two also can adopt other interference fastening's mode, and the repeated description is no longer given here.
Further, referring to fig. 3 again, the mounting plate 10 is provided with a motor fixing seat 11, and the motor 21 is mounted on the motor fixing seat 11. The motor fixing seat 11 is fixedly installed on the surface of the installation plate 10, the fixed installation mode can be welding, screw connection or other reasonable and effective connection modes, and the motor 21 is fixedly installed on the installation seat of the motor 21 so as to ensure the installation stability of the motor 21. The motor 21 is a direct drive motor, the fixing seat can be a flat plate, the plate surface of the fixing seat is perpendicular to the plate surface of the mounting plate 10, the surface of the fixing seat is provided with fixing holes, the fixing part of the direct drive motor is correspondingly provided with connecting holes, and the fixing part of the direct drive motor is fixed on the fixing seat through the matching of fasteners (such as screws) with the fixing holes and the connecting holes, so that the fixed installation of the direct drive motor can be realized. Of course, the fixing base may have other reasonable structures as long as the fixing base can fix and mount the motor 21.
Further, the mounting plate 10 is provided with a bearing mounting seat 12, and a bearing (not shown) is fitted to an end of the worm 22 away from the motor 21 and is mounted on the bearing mounting seat 12. Here, the bearing mounting seat 12 is disposed on a surface of the mounting plate 10 facing the motor fixing seat 11 and is in the same straight line with the motor fixing seat 11. The end of the worm 22 away from the motor 21 is sleeved with a bearing, and the bearing is mounted on the bearing mounting seat 12, so that the worm 22 can be supported to ensure the stability of the rotation process of the worm 22. Here, the bearing mounting seat 12 may be a flat plate whose plate surface is perpendicular to the plate surface of the mounting plate 10, and the outer ring of the bearing may be fixedly attached to the bearing mounting seat 12 by screws. Of course, the bearing mounting seat 12 may have other shapes as long as it can fix and mount the bearing.
Further, referring to fig. 4 to 6, the inner ring of the turbine 23 is provided with a connecting groove 231, one side of the transmission gear 30 facing the turbine 23 is provided with a fixed part 31, and the fixed part 31 is inserted into the connecting groove 231. Here, the connection groove 231 may be an annular groove, the fixing member 31 may be a sleeve structure, and is convexly disposed on one side of the transmission gear 30 and coaxially disposed with the transmission gear 30, and one end of the fixing member 31, which is far away from the transmission gear 30, is inserted and fixed to an inner wall of the connection groove 231, so that the fixed connection between the transmission gear 30 and the turbine 23 can be realized, and thus the turbine 23 rotates to drive the transmission gear 30 to rotate. Of course, the shape of the fixed part 31 may be other reasonable structures, the connecting groove 231 may be a plurality of connecting grooves 231 spaced along the circumferential direction of the turbine 23, correspondingly, the fixed part 31 is also provided with a plurality of connecting grooves 231, and the cooperation of each connecting groove 231 and one fixed part 31 can also realize the fixed connection of the transmission gear 30 and the turbine 23.
Further, the spread pitch angle of the worm 22 is defined as β, and the friction angle of the contact between the worm wheel 23 and the worm 22 is defined as Φ, β < Φ. Therefore, the transmission characteristic of meshing self-locking of the worm wheel 23 and the worm 22 can be met, namely, only the worm wheel 22 can rotate to drive the worm wheel 23 to rotate, but not the worm wheel 23 can rotate to drive the worm 22 to rotate, and the self-locking performance can protect the lifting operation of the camera 200 and ensure the stability of the lifting operation.
Further, referring to fig. 3 and 4 again, the camera telescoping device 100 further includes a gear set 40, an input end of the gear set 40 is connected to the transmission gear 30 in a transmission manner, and an output end of the gear set 40 is connected to the rack portion 71 in a transmission manner.
In order to reduce the speed of the rack output, a gear set 40 is also provided, an input end of the gear set 40 is connected with the transmission gear 30 in a transmission manner, and an output end of the gear set 40 is connected with the rack portion 71 in a transmission manner, so that the transmission gear 30 drives the rack portion 71 to rotate through the gear set 40 to reduce the speed. It should be noted that, the gear set 40 is an involute cylindrical gear set 40, so that the transfer torque performance is good, the stability of the lifting movement of the camera 200 can be improved, and the related problems of stalling, instability and the like caused by gear rotation errors and gear inclination errors can be effectively avoided. In addition, the gear set 40 is a small module gear set 40, and has the characteristics of small volume, high bearing capacity, large output torque, capability of reducing load inertia, increasing contact ratio, reducing sliding coefficient and the like.
Referring to fig. 3 and 4 again, the gear set 40 includes a first gear 41 and a second gear 42, both the first gear 41 and the second gear 42 are rotatably disposed on the mounting plate 10, the first gear 41 is located on a side of the transmission gear 30 facing away from the worm 22, and the second gear 42 is located on a side of the first gear 41 facing away from the transmission gear 30; the first gear 41 comprises a first sub gear 411 and a second sub gear 412 which are coaxially arranged and connected, the diameter of the first sub gear 411 is larger than that of the second sub gear 412, and the second sub gear 412 is arranged close to the mounting plate 10; the second gear 42 comprises a third sub-gear 421 and a fourth sub-gear 422 which are coaxially arranged and connected, the diameter of the third sub-gear 421 is smaller than that of the fourth sub-gear 422, and the fourth sub-gear 422 is arranged close to the mounting plate 10; the transmission gear 30 is engaged with the first sub-gear 411, the second sub-gear 412 is engaged with the fourth sub-gear 422, and the third sub-gear 421 is engaged with the rack portion 71. Due to the arrangement, the structure of the part is more compact, the transmission efficiency is higher, and the whole occupied space is smaller. Here, the first gear 41 and the second gear 42 are both press-fit large gears and press-fit small gears, that is, the first sub-gear 411 and the second sub-gear 412 are assembled into the first gear 41 through a shaft shoulder interference fit, and the third sub-gear 421 and the fourth sub-gear 422 are assembled into the second gear 42 through a shaft shoulder interference fit, so that the first sub-gear 411 and the second sub-gear 412 can rotate simultaneously, and the third sub-gear 421 and the fourth sub-gear 422 can rotate simultaneously. Here, the first gear 41 and the second gear 42 are both press-fit gears, which have high bending strength and can simplify the assembly process and reduce the volume of the camera telescoping device 100. Here, the gear set 40 of the first gear 41 and the second gear 42 is used for transmission, so that the moving process of the connecting element 70 can be decelerated, so as to ensure that the moving process of the connecting element 70 is smooth, and thus the telescoping process of the camera 200 is smooth. Here, the first sub-gear 411 and the second sub-gear 412 are mounted in the following manner: the surface of the mounting plate 10 facing the motor 21 is provided with a mounting hole (not shown), the second mounting shaft 14 is mounted in the mounting hole, generally, the end of the second mounting shaft 14 is welded to the hole wall of the mounting hole, so that the mounting stability of the second mounting shaft 14 can be ensured. The first and second sub-gears 411, 412 are mounted as a press-fit gear sleeve on the second mounting shaft 14 and are rotatable about the second mounting shaft 14. Thus, the first sub gear 411 rotates under the driving of the driving gear 30, and the second sub gear 412 rotates together with the first sub gear 411. Similarly, the third sub gear 421 and the fourth sub gear 422 are mounted in a manner similar to the first sub gear 411 and the second sub gear 412, that is, the surface of the mounting plate 10 is further provided with a third mounting shaft 15, and the third sub gear 421 and the fourth sub gear 422 are sleeved on the third mounting shaft 15 as a press-fitting gear and simultaneously rotate around the third mounting shaft 15.
Further, in order to ensure that the first gear 41 and the second gear 42 do not move axially in the rotating process, generally, an axial positioning element is arranged at the end of the corresponding mounting shaft, and the axial positioning element can be a sleeve, so that the gear can be ensured not to move axially in the rotating process, and the reliability and stability of the gear transmission process can be ensured. Specifically, the second positioning sleeve 17 is sleeved at both ends of the second mounting shaft 14, and the third positioning sleeve 18 is sleeved at both ends of the third mounting shaft 15.
Referring to fig. 3 again, the camera telescoping device 100 further includes a guide 50, the guide 50 is mounted on the mounting plate 10 and is provided with a guide groove 51, an opening of the guide groove 51 is disposed toward the transmission gear 30 and extends along a moving direction of the connecting member 70, the rack portion 71 is movably accommodated in the guide groove 51, and the connecting portion 73 is disposed on a side of the rack portion 71 away from the transmission gear 30 and penetrates through a sidewall of the guide groove 51 along the moving direction of the connecting member 70 to be exposed.
Specifically, the guide 50 is disposed at one side of the mounting plate 10, and has a guide groove 51 opened toward the gear train 40, and the guide groove 51 has a length direction extending in a moving direction of the connecting member 70. The connecting portion 73 is substantially in the shape of a long rod, the gear portion is disposed on one side of the connecting portion 73 facing the gear set 40, through holes 53 communicating with the guide grooves 51 are opened at both opposite ends of the guide 50 along the moving direction of the connecting member 70, and the connecting member 70 passes through the through holes 53 and can move in the guide grooves 51. The guide 50 is used for guiding and limiting the moving process of the connecting element 70, so as to ensure that the moving process of the camera 200 is smoother and more reliable.
Referring to fig. 1 and fig. 3 again, the camera telescoping device 100 further includes a housing 60, the housing 60 is covered on the mounting plate 10, the housing 60, the mounting plate 10 and the guide 50 enclose to form an accommodating cavity, and the driving mechanism 20 and the transmission gear 30 are disposed in the accommodating cavity.
Specifically, the cover 60 covers the surface of the mounting plate 10 facing the driving mechanism 20, and the connection manner of the two can be a snap connection, a screw connection or other reasonable and effective connection manner. The housing 60 has a first fixing hole 61 corresponding to the first mounting shaft 13, a second fixing hole 62 corresponding to the second mounting shaft 14, and a third fixing hole 63 corresponding to the third mounting shaft 15, during assembly, the end of the first mounting shaft 13 departing from the mounting plate 10 is inserted and fixed in the first fixing hole 61, and at this time, the first positioning sleeves 16 sleeved at the two ends of the first mounting shaft 13 abut against the mounting plate 10 and the housing 60 respectively, so that the axial positioning of the transmission gear 30 and the turbine 23 during rotation can be ensured. Similarly, the end of the second mounting shaft 14 away from the mounting plate 10 is inserted into the second fixing hole 62, and the second positioning sleeves 17 sleeved on the two ends of the second mounting shaft 14 are respectively abutted against the mounting plate 10 and the housing 60, so as to ensure the axial positioning during the rotation of the first transmission gear 41. The end of the third mounting shaft 15 away from the mounting plate 10 is inserted and fixed in the third fixing hole 63, and at this time, the third positioning sleeves 18 sleeved at the two ends of the third mounting shaft 15 are respectively abutted against the mounting plate 10 and the housing 60, so that the axial positioning of the rotation process of the second gear 42 can be ensured. After the assembly is completed, the housing 60, the mounting plate 10 and the guide piece 50 are enclosed together to form an accommodating cavity, and the motor 21, the worm wheel 23, the worm 22, the transmission gear 30 and each part of the gear set 40 are all installed in the accommodating cavity, so that the camera telescoping device 100 is pre-installed in a module mode and then integrally installed in the housing, and the installation difficulty of the camera telescoping device 100 can be reduced. Meanwhile, the accommodating cavities are arranged on all parts, so that noise generated during working can be isolated from being transmitted, noise generated when the camera 200 is used by the mobile terminal is reduced, and user experience is improved. It should be noted that, here, the mounting plate 10 may be provided with a mounting lug (not labeled) at the periphery thereof for mounting and fixing the housing 60.
Referring to fig. 7, in another embodiment of the camera retracting device 100 of the present invention, the driving mechanism 20 further includes a driving gear 24, and the driving gear 24 is sleeved on an output shaft of the motor 21; one end of the worm 22 is sleeved with a connecting gear 25, and the connecting gear 25 is meshed with the driving gear 24. The motor 21 and the worm 22 are driven by the connecting gear 25 and the driving gear 24 which are connected in a meshing manner, so that the transmission ratio of the whole transmission mechanism can be further optimized, and the stability of the moving process of the camera 200 can be further ensured.
Referring to fig. 1 again, the present invention further provides a mobile terminal, which includes a camera 200 and the camera telescoping device 100 as described above, wherein the camera 200 is connected to the connecting portion 73 of the connecting member 70 of the camera telescoping device 100; the specific structure of the camera telescoping device 100 refers to the foregoing embodiments. Since all technical solutions of all the foregoing embodiments are adopted, at least all beneficial effects brought by the technical solutions of the foregoing embodiments are achieved, and no further description is given here.
Specifically, mobile terminal includes the casing (not shown), camera telescoping device 100 locates in the casing and is located the back of screen, camera 200 is located the back of screen also in the casing, and be connected in camera telescoping device 100's connecting piece 70, so, motor 21 drive worm 22 rotates, worm 22 rotates and drives turbine 23 and rotate, turbine 23 rotates and drives drive gear 30 and rotate, drive gear 30 rotates and drives connecting piece 70 and remove, so that camera 200 stretches out or retracts, the screen need not reserve the space for camera 200 like this, mobile terminal has higher screen and accounts for the ratio.
Further, the camera 200 is provided with an elastic member 210 at a side facing the camera expansion device 100, and the connecting portion 73 is connected to an end of the elastic member 210 away from the camera 200. Here, the elastic member 210 is a pre-compressed spring, one end of which is fixedly connected to the side of the camera head 200 facing the camera head retracting device 100, and the other end of which is connected to the connecting portion 73. With such an arrangement, the elastic member 210 can transmit the stretching power and also can buffer the impact on the camera 200 during the stretching process. Optionally, the end of the connecting portion 73 facing the camera head 200 is provided with a connecting boss 731, and the end of the spring away from the camera head 200 is connected to the top of the connecting boss 731, which is generally welded, so that the connection stability can be ensured. In order to ensure the installation stability of the spring 210, the camera 200 is correspondingly provided with an installation cylinder (not shown), the spring 21 is installed in the installation cylinder, one end of the spring is connected to the bottom wall of the installation cylinder, and the other end of the spring is connected to the connection boss 731, so that the structure is more compact, and the transmission efficiency is higher. Of course, the elastic member 210 may be other elastic members to provide a buffering function.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A camera telescoping device, comprising:
mounting a plate;
the driving mechanism comprises a motor, a worm wheel and a worm, the motor is mounted on the mounting plate, the worm wheel is meshed with the worm, and the worm is in transmission connection with an output part of the motor;
the transmission gear is coaxially arranged with the turbine and is connected with the turbine; and
the connecting piece comprises a rack part and a connecting part which are connected, the rack part is movably arranged on the mounting plate and is in transmission connection with the transmission gear, and the connecting part is used for connecting a camera;
the motor drives the worm to rotate, the worm rotates to drive the worm wheel to rotate, the worm wheel rotates to drive the transmission gear to rotate, and the transmission gear rotates to drive the connecting piece to move so as to enable the camera to extend or retract;
the motor is a direct drive motor, the output part of the direct drive motor is in transmission connection with the worm, the moving direction of the connecting piece is parallel to the surface of the mounting plate, the axis of the output part of the direct drive motor is parallel to the surface of the mounting plate, and the axis of the output part of the direct drive motor is perpendicular to the moving direction of the connecting piece;
the camera telescoping device further comprises a guide piece, the guide piece is mounted on the mounting plate and provided with a guide groove, an opening of the guide groove is arranged towards the transmission gear and extends along the moving direction of the connecting piece, the rack portion is movably accommodated in the guide groove, the connecting portion is arranged on one side, away from the transmission gear, of the rack portion and penetrates through the guide groove to be exposed along the side wall of the connecting piece in the moving direction;
the camera telescoping device still includes the housing, the housing cover is located the mounting panel, just the housing the mounting panel reaches the guide encloses to close and forms the holding chamber, actuating mechanism with drive gear all locates the holding intracavity.
2. The camera telescoping device of claim 1, wherein the output portion of the direct drive motor is provided with a mounting groove, and one end of the worm is fixedly connected to a groove wall of the mounting groove through a key.
3. The camera telescoping device of claim 1, wherein the mounting plate is provided with a motor mount to which the motor is mounted.
4. The camera telescoping device of claim 1, wherein the mounting plate is provided with a bearing mount, and a bearing is sleeved on an end of the worm away from the motor and mounted on the bearing mount;
and/or the inner ring of the turbine is provided with a connecting groove, one side of the transmission gear, which faces the turbine, is provided with a fixed part, and the fixed part is inserted into the connecting groove.
5. The camera retraction device according to claim 1, wherein the extended pitch angle of the worm is defined as β, and the friction angle of the contact between the worm wheel and the worm is defined as Φ, β < Φ.
6. A camera retraction device according to any one of claims 1 to 5, further comprising a gear set, an input of said gear set being drivingly connected to said drive gear and an output of said gear set being drivingly connected to said rack portion.
7. The camera telescoping device of claim 6, wherein the gear set comprises a first gear and a second gear, both rotatably disposed on the mounting plate, the first gear being located on a side of the drive gear facing away from the worm, the second gear being located on a side of the first gear facing away from the drive gear;
the first gear comprises a first sub gear and a second sub gear which are coaxially arranged and connected, the diameter of the first sub gear is larger than that of the second sub gear, and the second sub gear is arranged close to the mounting plate;
the second gear comprises a third sub gear and a fourth sub gear which are coaxially arranged and connected, the diameter of the third sub gear is smaller than that of the fourth sub gear, and the fourth sub gear is arranged close to the mounting plate;
the transmission gear is meshed with the first sub-gear, the second sub-gear is meshed with the fourth sub-gear, and the third sub-gear is meshed with the rack portion.
8. The camera telescoping device of claim 1, wherein the drive mechanism further comprises a drive gear, the drive gear being sleeved on an output shaft of the motor;
one pot head of worm is equipped with connecting gear, connecting gear with drive gear meshing is connected.
9. A mobile terminal, characterized in that the mobile terminal comprises a camera and a camera telescoping device according to any one of claims 1 to 8, the camera being connected to a connecting portion of a connecting member of the camera telescoping device.
10. The mobile terminal according to claim 9, wherein a side of the camera head facing the camera head retracting device is provided with an elastic member, and the connecting portion is connected to an end of the elastic member away from the camera head.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910795001.2A CN110602357B (en) | 2019-08-26 | 2019-08-26 | Camera telescoping device and mobile terminal |
| PCT/CN2019/129848 WO2021036142A1 (en) | 2019-08-26 | 2019-12-30 | Camera telescopic device and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910795001.2A CN110602357B (en) | 2019-08-26 | 2019-08-26 | Camera telescoping device and mobile terminal |
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| Publication Number | Publication Date |
|---|---|
| CN110602357A CN110602357A (en) | 2019-12-20 |
| CN110602357B true CN110602357B (en) | 2021-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910795001.2A Active CN110602357B (en) | 2019-08-26 | 2019-08-26 | Camera telescoping device and mobile terminal |
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| Country | Link |
|---|---|
| CN (1) | CN110602357B (en) |
| WO (1) | WO2021036142A1 (en) |
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| CN110602357B (en) * | 2019-08-26 | 2021-06-08 | 歌尔股份有限公司 | Camera telescoping device and mobile terminal |
| CN110933210B (en) * | 2019-12-26 | 2021-07-06 | 维沃移动通信有限公司 | Electronic device |
| CN111556181A (en) * | 2020-04-17 | 2020-08-18 | 维沃移动通信有限公司 | Electronic device |
| CN111880606B (en) * | 2020-07-21 | 2022-05-27 | 维沃移动通信有限公司 | Electronic device |
| CN111867313A (en) * | 2020-07-31 | 2020-10-30 | 维沃移动通信有限公司 | Electronic device |
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| CN114690425A (en) * | 2022-03-30 | 2022-07-01 | 歌尔智能科技有限公司 | Intelligent head-mounted equipment |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2021036142A1 (en) | 2021-03-04 |
| CN110602357A (en) | 2019-12-20 |
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