CN110365877B

CN110365877B - Lifting mechanism, camera device and electronic device

Info

Publication number: CN110365877B
Application number: CN201910587162.2A
Authority: CN
Inventors: 王剑虹
Original assignee: Oppo Chongqing Intelligent Technology Co Ltd
Current assignee: Oppo Chongqing Intelligent Technology Co Ltd
Priority date: 2019-07-01
Filing date: 2019-07-01
Publication date: 2021-01-12
Anticipated expiration: 2039-07-01
Also published as: CN110365877A

Abstract

The invention provides a lifting mechanism for lifting an article, which comprises a lifting piece connected to the article, a driving piece, a gear assembly connected to the driving piece, and a transmission assembly connected between the gear assembly and the lifting piece, wherein the driving piece drives the gear assembly to rotate, the gear assembly drives the transmission assembly to rotate so as to drive the lifting piece to ascend or descend, the transmission assembly is provided with a buffer mechanism, and the buffer mechanism is used for blocking the relative motion of the transmission assembly and the gear assembly so as to prevent the gear assembly from abnormally rotating and avoid the gear assembly and the transmission assembly from being damaged due to tooth breakage. The invention also relates to a camera device provided with the lifting mechanism and an electronic device provided with the camera device.

Description

Lifting mechanism, camera device and electronic device

Technical Field

The invention relates to the technical field of mechanical transmission, in particular to a lifting mechanism, a camera telescoping device with the lifting mechanism and an electronic device with the camera telescoping device.

Background

In an existing electronic device, such as a mobile phone and a tablet computer, an electronic device such as a lens module is usually disposed on a top of the electronic device. The lens module of the existing full-screen mobile phone is generally hidden at the back of a display screen, and when the full-screen mobile phone is not used, the lens module is retracted inside the mobile phone and extends out of the lens module to take a picture when the full-screen mobile phone is needed. Due to the limitation of the space of the mobile phone, the mounting position, the transmission mode, the volume and the like of the lens module in the mobile phone are all important considerations. In the prior art, the lifting mechanism of the screw nut is generally adopted to drive the lens module to stretch, however, the existing lifting mechanism is not provided with an effective buffer mechanism, and the broken teeth of the screw nut are easy to occur when the mobile phone falls, so that the damage is caused, and the normal use of the lens module is influenced.

Disclosure of Invention

The invention aims to provide a lifting mechanism capable of effectively preventing tooth breakage, a camera telescoping device provided with the lifting mechanism and an electronic device provided with the camera telescoping device.

In order to solve the technical problem, the invention provides a lifting mechanism for lifting an article, which comprises a lifting member connected to the article, a driving member, a gear assembly connected to the driving member, and a transmission assembly connected between the gear assembly and the lifting member, wherein the driving member drives the gear assembly to rotate, the gear assembly drives the transmission assembly to rotate so as to drive the lifting member to ascend or descend, the transmission assembly is provided with a buffer mechanism, and the buffer mechanism is used for blocking the relative motion between the transmission assembly and the gear assembly.

The invention also provides a camera device, which comprises a camera module and a lifting mechanism, wherein a lifting piece of the lifting mechanism is connected to the camera module lifting mechanism, the lifting mechanism comprises a lifting piece connected to the camera module, a driving piece, a gear assembly connected to the driving piece, and a transmission assembly connected between the gear assembly and the lifting piece, the driving piece drives the gear assembly to rotate, the gear assembly drives the transmission assembly to rotate so as to drive the lifting piece to ascend or descend, the transmission assembly is provided with a buffer mechanism, and the buffer mechanism is used for blocking the relative motion of the transmission assembly and the gear assembly.

The invention also provides an electronic device, which comprises a casing and a camera device, wherein the camera device is arranged in the casing, the camera device comprises a camera module and a lifting mechanism, a lifting piece of the lifting mechanism is connected with the camera module lifting mechanism, the lifting mechanism comprises a lifting piece connected with the camera module, a driving piece and a gear assembly connected with the driving piece, and a transmission component connected between the gear component and the lifting component, wherein the driving component drives the gear component to rotate, the gear component drives the transmission component to rotate, so as to drive the lifting piece to ascend or descend, the transmission component is provided with a buffer mechanism which is used for blocking the relative movement of the transmission component and the gear component, the lifting mechanism of the camera device drives the camera module to be exposed out of the shell or to be accommodated in the shell.

The lifting mechanism of the electronic device comprises a lifting piece connected with the camera module, a driving piece for providing driving force, a gear assembly connected with the driving piece, and a transmission assembly connected between the gear assembly and the lifting piece. The driving part can drive the gear component to rotate so as to drive the lifting part to ascend or descend through the transmission component, and the lifting part drives the camera module to extend out or be accommodated in the accommodating groove of the middle frame so as to facilitate the use of the camera module or the protection of the camera module; in addition, the transmission assembly is provided with a buffer mechanism, and the buffer mechanism is used for blocking the transmission assembly to drive the gear assembly to rotate so as to prevent the gear assembly from rotating abnormally, avoid the gear assembly and the transmission assembly from being damaged due to broken teeth, and prolong the service life of the camera device.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic perspective view of an electronic device according to a first embodiment of the invention.

Fig. 2 is a schematic perspective view of the electronic device in fig. 1 from another perspective.

Fig. 3 is a perspective exploded view of the electronic device in fig. 2.

Fig. 4 is an enlarged perspective view of the elevating mechanism of the electronic device in fig. 2.

Fig. 5 is an exploded perspective view of the elevator mechanism of fig. 4.

Fig. 6 is a perspective view of another perspective of the lift mechanism of fig. 5.

FIG. 7 is a side view of the lifter, driver, gear assembly and transmission assembly of the lifter mechanism of FIG. 5.

Fig. 8 is an enlarged perspective view of a transmission assembly of the lifting mechanism of fig. 6.

Fig. 9 is an exploded isometric view of the transmission assembly of fig. 8.

Fig. 10 is a perspective view of the transmission assembly of fig. 9 from another perspective.

Fig. 11 is a sectional view taken along line XI-XI in fig. 8.

Fig. 12 is a partial perspective cross-sectional view of the electronic device of fig. 2.

Fig. 13 is a schematic structural diagram of the back side of the electronic device in fig. 2.

Fig. 14 is a schematic view of a use state of the electronic device in fig. 13.

Fig. 15 is a schematic structural diagram of a back surface of an electronic device according to a second embodiment of the invention.

Fig. 16 is a schematic view of a use state of the electronic device in fig. 15.

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 obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

In addition, the following description of the various embodiments refers to the accompanying drawings, which illustrate specific embodiments in which the application may be practiced. Directional phrases used in this application, such as, for example, "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "side," and the like, refer only to the orientation of the appended drawings and are, therefore, used herein for better and clearer illustration and understanding of the application and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the application.

In the description of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed at … …" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Referring to fig. 1 to 3, the present invention provides an electronic device 100, which includes a middle frame 20, a display screen 30 disposed at a front side of the middle frame 20, a camera device 40, a main board 50, a battery 70, and a back plate 80, wherein the main board 50 is disposed in the middle frame 20, and the battery 70 is disposed in the middle frame 20 in a manner of being attached to the main board 50. The top end surface of the middle frame 20 is provided with an accommodating groove 22, the back surface of the middle frame 20 close to the accommodating groove 22 is provided with an installation space 24, and the accommodating groove 22 is communicated with the installation space 24; the inner wall of the mounting space 24 of the middle frame 20 is provided with a fixing hole 242, and the back surface of the middle frame 20 adjacent to the mounting space 24 is provided with a through hole 220 communicated with the containing groove 22. The camera device 40 includes a camera module 41 and a lifting mechanism 42 connected to the camera module 41, the camera module 41 is movably received in the receiving slot 22, and the lifting mechanism 42 is disposed in the installation space 24. The lifting mechanism 42 can drive the camera module 41 to expose out of the accommodating groove 22, so that the camera can be conveniently used; the elevating mechanism 42 can drive the camera module 41 to be accommodated in the accommodating groove 22, so as to facilitate the accommodation and protection of the camera module 41.

In this embodiment, the electronic device 100 is a mobile phone, the camera module 41, the display screen 30 and the battery 70 are electrically connected to the main board 30, and the camera module 41 includes a housing 410, a front camera disposed on the front surface of the housing 410, a rear camera disposed on the back surface of the housing 410, a photosensitive element, and the like. The housing 410 is substantially in a right trapezoid shape, the housing 410 includes a top surface 411 and a circular arc side surface 412, a shaft hole 413 is formed at an end of the back surface of the housing 410 away from the circular arc side surface 412, and the shaft hole 413 is used for rotatably mounting the camera module 41 in the accommodating groove 22; the bottom surface of the housing 410 is provided with a connecting groove 414 near the arc side surface 412, and the back surface of the housing 410 is provided with a hinge hole 415 communicating with the connecting groove 414 at a position far away from the top surface 411 near the arc side surface 412, wherein the hinge hole 415 is a countersunk hole. The back surface is a surface facing opposite to the light emitting surface of the display screen 30, and the front surface is a surface facing the same as the light emitting surface of the display screen 30.

Referring to fig. 4 to 7, the lifting mechanism 42 is used for lifting an object, and the lifting mechanism 42 includes a lifting member 43 connected to the object, a driving member 45, a gear assembly 46 connected to the driving member 45, and a transmission assembly 47 connected between the gear assembly 46 and the lifting member 43. The driving member 45 drives the gear assembly 45 to rotate, the gear assembly 45 rotates to drive the transmission assembly 47 to rotate, and the transmission assembly 47 drives the lifting member 43 to ascend or descend, so that the camera module 41 extends out of or is accommodated in the accommodating groove 22. The transmission assembly 47 is provided with a damping mechanism for blocking the relative movement between the transmission assembly 47 and the gear assembly 46, i.e. blocking the transmission assembly 47 from rotating the gear assembly 46. In this embodiment, the article is the camera module 41.

The lifting mechanism 42 of the electronic device 100 of the present invention includes a lifting member 43 connected to the camera module 41, a driving member 45 providing a driving force, a gear assembly 46 connected to the driving member 45, and a transmission assembly 47 connected between the gear assembly 46 and the lifting member 43. The driving component 45 can drive the gear component 46 to rotate, so that the lifting component 43 is driven to ascend or descend by the transmission component 47, and the lifting component 43 drives the camera module 41 to extend out or be accommodated in the accommodating groove 22 of the middle frame 20, so that the camera module 41 can be conveniently used or the camera module 41 can be protected; in addition, the transmission assembly 47 is provided with a buffer mechanism, and the buffer mechanism is used for blocking the transmission assembly 47 from driving the gear assembly 46 to rotate, so as to prevent the gear assembly 46 from rotating abnormally, prevent the gear assembly 46 and the transmission assembly 47 from being damaged due to tooth breakage, and prolong the service life of the camera device 40.

In this embodiment, the lifting member 43 is a rack, and the lifting member 43 includes a strip-shaped strip 430 and a plurality of teeth 432 arranged on a side surface of the strip 430 along a length direction of the strip 430. One end of the lifting piece 43 is provided with a stop bar 434, and one end of the lifting piece 43 away from the stop bar 434 is provided with a connecting part 435, and the connecting part 435 is used for connecting the article. Specifically, the stop strip 434 is convexly arranged at one end of the strip body 430, which is away from the side face of the tooth 432, one end of the connecting portion 435, which is away from the tooth 432, is provided with a waist-shaped connecting hole 436, and the locking member partially penetrates through the connecting hole 436 and is locked to the article, so that the lifting member 43 is connected to the article, and the locking member can slide in the connecting hole 436, so that the position between the lifting member 43 and the article can be adjusted.

In this embodiment, the driving member 45 is a driving motor, the driving member 45 is provided with a driving shaft 451, the driving member 45 is electrically connected to the main board 50 and the battery 70, the battery 70 provides power for the driving motor, and the main board 50 controls the driving motor to drive the driving shaft 451 to rotate. The driving member 45 is controlled by operating a control icon on the display screen 30, that is, clicking the control icon can send a trigger signal to the controller on the main board 50, and the controller receives the trigger signal and controls the driving member 45 to drive the driving shaft 451 to rotate.

In other embodiments, the driving element 45 can also be controlled by an operation key disposed on the side wall of the middle frame 20, the operation key is electrically connected to the main board 50, and the operation key 220 is used for turning on or off the driving element 45.

The gear assembly 46 includes a drive gear 461 connected to the drive shaft 451 of the driving member 45, a bevel gear 463 connected to the transmission assembly 47, and at least one transmission gear 466 engaged between the drive gear 461 and the bevel gear 463.

In this embodiment, the gear assembly 46 includes two intermeshing drive gears 466, and the drive gear 461 is axially fixed to the end of the drive shaft 451 such that the axis of the drive shaft 451 coincides with the axis of the drive gear 461. The bevel gear 463 comprises a rotating shaft 4630, a spur gear 4631 fixedly sleeved on the rotating shaft 4630 and a circle of bevel teeth 4633 arranged on one side of the spur gear 4631. The axial lead of the rotating shaft 4630, the axial lead of the spur gear 4631 and the axial lead of one circle of the conical teeth 4633 are overlapped, the maximum outer diameter of one circle of the conical teeth 4633 is smaller than that of the spur gear 4631, and two opposite ends of the rotating shaft 4630 extend out of two opposite side faces of the bevel gear 463 respectively. Each transmission gear 466 comprises a rotating shaft 4660, and a first gear 4661 and a second gear 4663 fixedly sleeved on the rotating shaft 4660, wherein the first gear 4661 and the second gear 4663 are stacked along the axial direction of the rotating shaft 4660, the axial lines of the rotating shaft 4660, the first gear 4661 and the second gear 4663 are overlapped, two opposite ends of the rotating shaft 4660 respectively extend out of two opposite end faces of the transmission gear 466, and the outer diameter of the first gear 4661 is larger than that of the second gear 4663.

When the gear assembly 46 is assembled, the first gear 4661 of one of the transmission gears 466 is engaged with the second gear 4663 of the other transmission gear 466, the driving gear 461 is engaged with the first gear 4661 of the other transmission gear 466, and the spur gear 4631 of the bevel gear 463 is engaged with the second gear 4663 of the one of the transmission gears 466, so that the gears of the assembly gear assembly 46 are compactly engaged together, thereby reducing the volume of the assembly gear assembly 46.

Referring to fig. 8 to 11, the transmission assembly 47 includes a transmission member 471 rotatably connected to the lifting member 43, an abutting member 473 fastened to one end of the transmission member 471, a connecting member 475 connected between the abutting member 473 and the gear assembly 46, and a rotation shaft 476, wherein the transmission member 471, the abutting member 473, and the connecting member 475 are rotatably sleeved on the rotation shaft 476. When the driving member 471 rotates relative to the abutting member 473, the abutting member 473 is driven to move toward the connecting member 475 to be disengaged from the driving member 471. In this embodiment, the driving member 471 and the abutting member 473 are clamped with each other by the cooperation of the convex hull and the concave hull; the abutting member 473 and the connecting member 475 are engaged with each other by a guide bar and a guide groove, which extend along the axial line of the rotating shaft 476 of the transmission assembly 47.

Specifically, the transmission member 471 includes a connection plate 4711 clamped to the abutting member 473 and a transmission gear 4713 disposed on a side of the connection plate 4711 away from the abutting member 473, and the teeth 432 of the lifting member 43 are engaged with the transmission gear 4713. The coupling plate 4711 is a circular plate, the transmission gear 4713 is fixedly coupled to the coupling plate 4711, and teeth of the transmission gear 4713 extend in an axial direction of the coupling plate 4711. The outer diameter of the transmission gear 4713 is smaller than the outer diameter of the connecting plate 4711, and the axial line of the transmission gear 4713 coincides with the axial line of the connecting plate 4711. The transmission member 471 is provided with a shaft hole 4715 along the axial line of the transmission gear 4713, and the shaft hole 4715 penetrates through the transmission gear 4713 and the connecting plate 4711. The side surface of the connecting plate 4711 facing away from the transmission gear 4713 is provided with a plurality of concave portions 4717 around the shaft hole 4715, and each concave portion 4717 is an arc-shaped concave portion 4717. Preferably, each depression 4717 is a hemispherical depression. In this embodiment, the number of the depressions 4717 is four, and four depressions 4717 are uniformly arranged in a circle around the shaft hole 4715; in other embodiments, the number of depressions 4717 can be two, three, or more than four. In other embodiments, the plurality of depressions 4717 may not be uniformly arranged.

The abutting piece 473 includes an abutting plate 4731 capable of being engaged with the driving member 471 and a connecting cylinder 4733 disposed on a side of the abutting plate 4731 away from the driving member 471. The contact plate 4731 is a circular plate, and the connecting tube 4733 is provided around the contact plate 471, i.e., the axial line of the contact plate 4731 coincides with the axial line of the connecting tube 4733. The contact member 473 has an axial hole 4735 along the axial line of the transmission member 471, and the axial hole 4735 penetrates the contact plate 4731 and communicates with the inner cavity of the connecting cylinder 4733. The side surface of the abutting plate 4731 departing from the connecting cylinder 4733 is provided with a plurality of convex hulls 4737 around the shaft hole 4735, and the plurality of convex hulls 4737 are in one-to-one correspondence with the plurality of concave hulls 4717. The outer surface of each convex hull 4737 is a circular arc, and preferably each convex hull 4737 is hemispherical. The side wall of the connecting tube 4733 is provided with at least one guide groove 4738 along the axial direction of the shaft hole 4735. In this embodiment, two opposite guide grooves 4738 are formed in the side wall of the connecting tube 4733. In this embodiment, the number of the convex hulls 4737 is four, and four convex hulls 4737 are uniformly arranged in a circle around the shaft hole 4735; in other embodiments, the number of convex hulls 4737 can be two, three, or more than four. In other embodiments, the convex hulls 4737 may be arranged non-uniformly.

The connecting member 475 includes a bevel gear 4751 for engaging the gear assembly 46 and at least one guide bar 4753 disposed on a side of the bevel gear 475 facing the abutment 473. The coupling 475 is provided with a shaft hole 4755 along the axial line of the bevel gear 475, and the shaft hole 4755 penetrates the bevel gear 4751. At least one of the guide bars 4753 corresponds to at least one of the guide grooves 4738 of the abutment 473. In the present embodiment, the side of the bevel gear 475 facing the abutment 473 is provided with two guide bars 4753 corresponding to the two guide grooves 4738 of the abutment 473.

The transmission assembly 47 further includes an elastic member 477 disposed between the abutment 473 and the connecting member 475, the elastic member 477 is used for restoring the movement of the abutment 473. Specifically, the elastic member 477 is a spring.

When the transmission assembly 47 is assembled, the elastic member 477 is sleeved on the rotating shaft 476; one end of the rotating shaft 476 is inserted into the shaft hole 4735 through the connecting barrel 4733 of the abutting piece 473, the other end of the rotating shaft 476 is inserted into the shaft hole 4755 from the side away from the bevel gear 4751, the abutting piece 473 and the connecting piece 475 slide relatively along the rotating shaft 476 until the two guide bars 4753 are respectively inserted into the corresponding guide grooves 4738; at this time, the elastic member 477 is located between the abutment 473 and the connecting member 475, specifically, opposite ends of the elastic member 477 elastically abut against the first bevel gear 4751 and the abutment plate 4731, respectively, and the elastic member 477 is positioned in the connecting cylinder 4733. The driving member 471 is sleeved on one end of the rotating shaft 476 close to the abutting member 473, and the driving member 471 slides along the rotating shaft 476 until the convex hulls 4737 of the abutting member 473 are respectively inserted into the corresponding concave recesses 4717 on the driving member 471. At this time, the driving member 471, the abutting member 473 and the connecting member 475 are connected together and rotatably sleeved on the rotating shaft 476.

In other embodiments, the side of the abutting member 473 facing the driving member 471 is provided with a plurality of recesses, and the side of the driving member 471 facing the abutting member 473 is provided with a plurality of convex hulls corresponding to the plurality of recesses. Specifically, a plurality of convex hulls are convexly arranged on the periphery of the shaft hole 4715 on the side surface of the connecting plate 4711 departing from the transmission gear 4713, a plurality of concave hulls are arranged on the periphery of the shaft hole 4735 on the side surface of the abutting joint plate 4731 departing from the connecting cylinder 4733, and the convex hulls are in one-to-one correspondence with the concave hulls.

In other embodiments, at least one guide bar is disposed along the axial line direction of the transmission assembly 47 on the side of the abutment 473 facing the connecting element 475, and at least one guide groove is formed on the side of the connecting element 475 facing the abutment 473 corresponding to the at least one guide bar. Specifically, at least one guide bar is arranged on one side of the abutting plate 4731 facing the connecting piece 475 along the axial lead direction of the transmission assembly 47, a connecting cylinder is arranged on one side of the bevel gear 4751 facing the abutting piece 473, the axial lead of the bevel gear 4751 is overlapped with the axial lead of the connecting cylinder, a guide groove corresponding to at least one guide bar is arranged on the side wall of the connecting cylinder, and at least one guide bar is inserted into at least one guide groove in a sliding manner along the axial lead direction of the transmission assembly 47.

As shown in fig. 4 to 6, the lifting mechanism 42 further includes a housing 48, the gear assembly 46, the transmission assembly 47 and the lifting member 43 are disposed in the housing 48, and the rotating shaft 476 of the transmission assembly 47 is fixed in the housing 48.

The housing 48 includes a first housing 481 and a second housing 485 fitted to the first housing 481, the first housing 481 is provided with a first gear accommodating cavity 482 and a first transmission member accommodating cavity 483, the second housing 285 is provided with a second gear accommodating cavity 486 and a second transmission member accommodating cavity 487, the gear assembly 46 is accommodated in a space surrounded by the first gear accommodating cavity 482 and the second gear accommodating cavity 486, and the transmission assembly 47 is accommodated in a space surrounded by the first transmission member accommodating cavity 483 and the second transmission member accommodating cavity 487.

Specifically, the first housing 481 is generally a rectangular frame, a notch 4810 is disposed at one corner of the first housing 481, a connection block 4812 is disposed in the notch 4810, and a connection hole 4814 is disposed on the connection block 4812. The first gear housing chamber 482 is opened in a side surface of the first housing 481 facing the second housing 482, and the first gear housing chamber 482 is divided into a first space region 4821, a second space region 4823 communicating with the first space region 4821, and a third space region 4825 communicating with the second space region 4823. The first space area 4821 is used to receive the driving gear 461 and the portion of the transmission gear 466 engaged with the driving gear 461, the second space area 4823 is used to receive the portion of the transmission gear 466 away from the driving gear 461, and the third space area 4825 is used to receive the portion of the bevel gear 463. The first shell 481 is provided with two opposite semicircular notches 4822 on two opposite sides of the first space area 4821, the first shell 481 is provided with two opposite semicircular notches 4824 on two opposite sides of the second space area 4823, the first shell 481 is provided with two opposite semicircular notches 4826 on two opposite sides of the third space area 4825, and the

notches

4822, 4824 and 4826 are used for respectively accommodating the rotating shaft 4660 of the two transmission gears 466 and the rotating shaft 4630 of the bevel gear 463. The side wall of the first housing 481 facing away from the connecting block 4812 is opened with a connecting groove 4827 communicating with the first space section 4821, the connecting groove 4827 being used for inserting the driving shaft 451. The first housing 481 is provided with two semicircular notches 4831 at two opposite sides of the first transmission piece accommodating cavity 483, the first transmission piece accommodating cavity 483 is used for accommodating a part of the transmission assembly 47, and the notches 4831 are used for accommodating parts at two opposite ends of the rotating shaft 476. One end of the first housing 481, which is far away from the first gear receiving cavity 482, is provided with a through hole 484 communicating with the first transmission piece receiving cavity 483, and the lifting piece 43 can be inserted into the through hole 484 in a sliding manner. The side wall of the first housing 481 where the connecting groove 4827 is opened is also provided with a connecting block 4812 outward, and the connecting block 4812 is opened with a connecting hole 4814. The side of the first shell 481 facing the second shell 485 is further provided with a plurality of fixing holes 4811.

The second housing 485 is a rectangular frame, a notch 4850 is disposed at a corner of the second housing 485, and the notch 4850 of the second housing 485 corresponds to the notch 4810 of the first housing 481. The second gear receiving chamber 486 is opened in a side surface of the second housing 485 facing the first housing 481, and the second gear receiving chamber 486 is divided into a fourth space region 4861, a fifth space region 4863 communicating with the fourth space region 4861, and a sixth space region 4865 communicating with the fifth space region 4863. The fourth space area 4861 is for receiving the driving gear 461 and the portion of the transmission gear 466 engaged with the driving gear 461, the fifth space area 4863 is for receiving the portion of the transmission gear 466 away from the driving gear 461, and the sixth space area 4865 is for receiving the portion of the bevel gear 463. The second housing 485 is provided with two opposite semicircular notches 4862 on two opposite sides of the fourth space area 4861, the second housing 485 is provided with two opposite semicircular notches 4864 on two opposite sides of the fifth space area 4863, the second housing 485 is provided with two opposite semicircular notches 4866 on two opposite sides of the sixth space area 4865, and the

notches

4862, 4864, 4866 are used for respectively accommodating the rotating shaft 4660 of the two transmission gears 466 and the rotating shaft 4630 of the bevel gear 463. A positioning piece 4867 is convexly disposed on a side wall of the second housing 485 facing away from the notch 4850 and adjacent to the fourth space area 4861, a circular arc-shaped notch is formed at a tail end of the positioning piece 4867, and the positioning piece 4867 is used for positioning the driving shaft 451. The second housing 485 is provided with two opposite semicircular notches 4871 at two opposite sides of the second transmission member accommodating cavity 487, the second transmission member accommodating cavity 487 is used for accommodating a part of the transmission assembly 47, and the two notches 4871 are used for accommodating parts at two opposite ends of the rotating shaft 476. The side of the second shell 485 facing away from the first shell 481 is further provided with a plurality of countersunk holes 4851.

When the lifter mechanism 42 is assembled, the lifter 43 is placed in the through hole 484 of the first housing 481, with the teeth 432 of the lifter 43 facing outward. The gear assembly 46 and the transmission assembly 47 are respectively inserted into the first gear receiving cavity 482 and the first transmission piece receiving cavity 483, specifically, the driving gear 461 and the transmission gear 466 engaged with the driving gear 461 are inserted into the first space area 4821, the two opposite ends of the rotating shaft 4660 are respectively inserted into the two notches 4822, and the driving shaft 451 is inserted into the connecting groove 4827; the transmission gear 466 far away from the driving gear 461 is inserted into the second space area 4823 and the two opposite ends of the rotating shaft 4660 are respectively inserted into the two notches 4824; the bevel gear 463 is inserted into the third space area 4825 and the opposite ends of the rotating shaft 4630 are inserted into the two notches 4826, respectively; the transmission assembly 47 is inserted into the first transmission piece receiving cavity 483, two ends of two pairs of the rotating shafts 476 are respectively clamped into the two notches 4831, the transmission gear 4713 is meshed with the teeth 432 of the lifting piece 43, and the bevel gear 4751 of the transmission assembly 47 is meshed with the bevel gear 463. Then, the second housing 485 is covered on the first housing 481, and the positioning piece 4867 is inserted into the connecting groove 4827, so that the driving shaft 451 is rotatably accommodated in the notch of the positioning piece 4867; the exposed portions of the driving gear 461 and the transmission gear 466 engaged with the driving gear 461 are inserted into the fourth space area 4861, and the exposed portions of the opposite ends of the rotating shaft 4660 are inserted into the two notches 4862; the exposed part of the transmission gear 466 far away from the driving gear 461 is inserted into the fifth space area 4863 and the exposed parts of the two opposite ends of the rotating shaft 4660 are respectively inserted into the two notches 4864; the exposed portion of the bevel gear 463 is inserted into the sixth spatial area 4865 and the exposed portions of the opposite ends of the rotating shaft 4630 are inserted into the two notches 4866, respectively; the exposed portion of the transmission assembly 47 is inserted into the second transmission member receiving cavity 487, and the exposed portions of the two ends of the two pairs of shafts 476 are respectively engaged in the two notches 4871. After being inserted into the counter bores 4851, the locking members are locked in the corresponding fixing holes 4811 to fix the first housing 481 and the second housing 485 together, so as to connect the lifting member 43, the driving member 45, the gear assembly 46 and the transmission assembly 47 together.

At this time, the driving gear 461 and the transmission gear 466 engaged with the driving gear 461 are accommodated in the space enclosed by the first space area 4821 and the fourth space area 4861, and the rotating shaft 4660 is rotatably accommodated in the shaft hole enclosed by the notch 4822 and the notch 4862; the transmission gear 466 far away from the driving gear 461 is accommodated in the space enclosed by the second space area 4823 and the fifth space area 4863, and the rotating shaft 4660 is rotatably accommodated in the shaft hole enclosed by the notch 4824 and the notch 4864; the bevel gear 463 is accommodated in a space defined by the third space area 4825 and the sixth space area 4865, and the rotating shaft 4630 is rotatably accommodated in a shaft hole defined by the notch 4826 and the notch 4866; the transmission assembly 47 is accommodated in a space enclosed by the first transmission member accommodating cavity 483 and the second transmission member accommodating cavity 487, and the rotating shaft 476 is fixed in a fixing hole enclosed by the notch 4831 and the notch 4871. The axis of the drive shaft 451, the axis of the rotary shaft 4660, and the axis of the rotary shaft 4630 are spaced in parallel, and the axis of the rotary shaft 476 is perpendicular to the axis of the drive shaft 451. The driving member 45 can drive the driving shaft 451 to rotate, and the driving gear 461, the transmission gear 466 and the bevel gear 463 of the driving gear assembly 46 rotate, so as to drive the connecting member 475, the abutting member 473 and the transmission member 471 to rotate along the rotating shaft 476, so that the transmission gear 4713 drives the lifting member 43 to slide in the through hole 484 and stop at the stop bar 434.

Referring to fig. 3, 12 and 13, when the lifting mechanism 42 is mounted on the middle frame 20, the lifting mechanism 42 is placed in the mounting space 24, the camera module 41 is inserted into the accommodating groove 22, the connecting portion 435 of the lifting member 43 is inserted into the connecting groove 414, the connecting hole 436 is aligned with the hinge hole 415 and the through hole 220, and the shaft hole 413 is connected to the middle frame 20 by inserting an inner rotating shaft thereof so that the camera module 41 can rotate along the rotating shaft; when the camera module 41 is received in the receiving slot 22, the top surface 411 is coplanar with the top surface of the middle frame 20; providing a locking piece to pass through the through hole 220, inserting the locking piece into the hinge hole 415 and then connecting the locking piece to the connecting hole 436, so that the lifting piece 43 is hinged to the camera module 41, and the locking piece is accommodated in the hinge hole 415; providing two locking members inserted into the connecting holes 4814 of the two connecting blocks 4812 and then connected to the corresponding fixing holes 242 to fix the lifting mechanism 42 to the middle frame 20; electrically connecting the driving member 45 to the main board 50 and the battery 70; and then the back plate 80 is covered on the back surface of the middle frame 20. The lifting mechanism 42 of the invention adopts the matched transmission of the gear and the rack, and compared with the matched transmission of the screw thread, the nut and the sliding rod in the prior art, the volume and the weight of the lifting mechanism 42 can be greatly reduced, the internal space of the shell of the electronic device occupied by the lifting mechanism 42 is reduced, and more space is reserved for stacking other components.

Referring to fig. 12 to 14, when the camera module 41 needs to be used, clicking the control icon of the display screen 30 can send a trigger signal to the controller on the main board 50, the controller receives the trigger signal and controls the driving member 45 to drive the driving shaft 451 to rotate so as to drive the transmission gear 466 to rotate, the transmission gear 466 drives the bevel gear 463 to rotate, the bevel gear 463 drives the connecting member 475 to rotate, due to the cooperation between the connecting member 475 and the abutting member 473 via the guide bar 4753 and the guide groove 4738, the abutting member 473 and the transmission member 471 are engaged via the convex hull 4737 and the concave hull 4717, so that the rotation of the connecting member 475 can drive the abutting member 473 and the transmission member 471 to rotate together along the rotating shaft 476, the transmission gear 4713 of the transmission member 471 is engaged with the tooth 432 to drive the lifting member 43 to slide towards the top of the housing 48, so that the connecting portion 435 of the transmission member 471 pushes the camera module 41 to rotate outwards, until the front camera and the rear camera of the camera module 41 are exposed out of the top wall of the casing 20, the driving member 45 stops driving the driving shaft 451 to rotate, the camera module 41 is positioned, and a user can use electronic components such as the front camera, the rear camera and the photosensitive element conveniently.

When the camera module 41 needs to be stored, clicking the control icon of the display screen 30 can send a trigger signal to the controller on the main board 50, the controller receives the trigger signal and controls the driving member 45 to drive the driving shaft 451 to rotate in the opposite direction, so that the gear assembly 46 and the transmission assembly 47 rotate, the rotation of the transmission gear 4713 of the transmission assembly 47 drives the lifting member 43 to slide towards the inside of the casing 48, and the connecting portion 435 of the transmission member 471 pulls the camera module 41 to rotate towards the accommodating groove 22 along the shaft hole 413 until the front camera and the rear camera of the camera module 41 are both stored in the accommodating groove 22.

When the electronic device 100 is severely impacted, for example, the electronic device 100 falls from a high place during shooting, the exposed camera module 41 is impacted to drive the lifting member 43 to abnormally slide towards the inside of the housing 48, the teeth 432 of the lifting member 43 force the transmission member 471 to rotate through the transmission gear 4713, and since the driving member 45 is in a stop state, the gear assembly 46 and the transmission assembly 47 are both in a static state, so that the rotation of the transmission member 471 causes the convex hull 4737 of the abutment member 473 to disengage from the concave hull 4717, and the abutment member 473 moves towards the connection member 475, and the elastic member 477 elastically deforms. At this time, the driving member 471 is separated from the supporting member 473 and rotates, and the supporting member 473, the connecting member 475 and the gear assembly 46 do not rotate, so that the connecting member 475 and the gear assembly 46 are prevented from rotating abnormally, the gear assembly 46 and the transmission assembly 47 are prevented from being damaged due to tooth breakage, and the service life of the camera device 40 is prolonged. After the camera module 41 is impacted, the lifting member 43 stops sliding, the elastic member 477 elastically resets and pushes the abutting member 473 to move towards the transmission member 471, so that the convex hull 4737 is clamped into the concave hull 4717 to recover the clamping between the abutting member 473 and the transmission member 471, thereby facilitating the next use of the lifting mechanism 42.

Referring to fig. 15, fig. 15 is a schematic structural diagram of a back surface of an electronic device according to a second embodiment of the invention. The structure of the second embodiment of the electronic device is similar to that of the first embodiment, except that: in the second embodiment, the camera module 41a is slidably received in the receiving groove 22. The structure of the lifting mechanism 42 in the second embodiment is the same as that in the first embodiment, and is not described again.

The camera module 41a is a rectangular body, the camera module 41a also includes electronic components such as a front camera, a rear camera, and a photosensitive element, and the bottom of the camera module 41a is connected to the connecting portion 435 of the lifting member 43.

When the camera module 41a needs to be used, clicking the control icon can send a trigger signal to the controller on the main board, the controller receives the trigger signal and controls the driving member 45 to drive the driving shaft 451 to rotate so as to drive the transmission gear 466 to rotate, the transmission gear 466 drives the bevel gear 463 to rotate, the bevel gear 463 drives the connecting member 475 to rotate, the connecting member 475 can drive the abutting member 473 and the transmission member 471 to rotate together, the transmission gear 4713 of the transmission member 471 drives the lifting member 43 to slide towards the top of the housing 48, so that the connecting portion 435 of the transmission member 471 abuts against the camera module 41a to slide out until the front camera and the rear camera of the camera module 41a are exposed out of the top wall of the housing 20, the driving member 45 stops driving the driving shaft 451 to rotate, and the camera module 41a is positioned, so that a user can use electronic components such as the front camera, the rear camera and a photosensitive element conveniently.

When the camera module 41a needs to be stored, the control icon is clicked to send a trigger signal to the controller on the main board, the controller receives the trigger signal and controls the driving member 45 to drive the driving shaft 451 to rotate in the opposite direction, so that the gear assembly 46 and the transmission assembly 47 rotate, the rotation of the transmission gear 4713 of the transmission assembly 47 drives the lifting member 43 to slide towards the inside of the casing 48, and the connecting portion 435 of the transmission member 471 pulls the camera module 41a to slide into the accommodating groove 22 until the front camera and the rear camera of the camera module 41 are both stored in the accommodating groove 22.

In this embodiment, the driving gear 461, the transmission gear 466, the spur gear 4631 of the bevel gear 463 and the transmission gear 4713 are all spur gears, the lifting member 43 is a spur rack, and the bevel gear 4751 of the connecting member 475 and the bevel gear 4633 of the bevel gear 463 are all spur bevel gears.

In other embodiments, the transmission gear 4713 may be a helical gear, and the lifting member 43 may be a helical rack engaged with the transmission gear 4713, so that the lifting and lowering of the lifting member 43 can be smoother by the cooperation of the helical gear and the helical rack, and the impact resistance can be improved.

The foregoing is illustrative of embodiments of the present invention, and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the embodiments of the present invention and are intended to be within the scope of the present invention.

Claims

1. A lifting mechanism is used for lifting an article and is characterized by comprising a lifting part connected to the article, a driving part, a gear assembly connected to the driving part, and a transmission assembly connected between the gear assembly and the lifting part, wherein the driving part drives the gear assembly to rotate, the gear assembly drives the transmission assembly to rotate so as to drive the lifting part to ascend or descend, the transmission assembly is provided with a buffer mechanism, and the buffer mechanism is used for blocking the relative motion of the transmission assembly and the gear assembly; the transmission assembly comprises a transmission piece rotatably connected with the lifting piece, a joint connected with the abutting piece of the transmission piece and a connecting piece connected between the abutting piece and the gear assembly, and the transmission piece rotates relative to the abutting piece to drive the abutting piece to move towards the connecting piece to be separated from the joint of the transmission piece.

2. The lift mechanism of claim 1, wherein the transmission assembly further comprises an elastic member disposed between the abutment member and the connecting member, the elastic member being configured to return to the displacement of the abutment member.

3. The lifting mechanism according to claim 1, wherein the driving member and the abutting member are detachably engaged with each other by engagement of the convex hull and the concave hull.

4. The lifting mechanism according to claim 3, wherein the side of the abutment member facing the driving member is provided with a plurality of convex hulls, and the side of the driving member facing the abutment member is provided with a plurality of concave recesses corresponding to the plurality of convex hulls; or a plurality of recesses are formed in the side surface of the abutting part facing the transmission part, and a plurality of convex hulls are formed in the side surface of the transmission part facing the abutting part corresponding to the plurality of recesses.

5. The lifting mechanism as claimed in claim 1, wherein the abutment member is movable toward and away from the connecting member along a rotation axis of the transmission assembly, and the abutment member and the connecting member rotate together about the rotation axis.

6. The lifting mechanism according to claim 5, wherein the abutting member and the connecting member are clamped by a guide bar and a guide groove, and the guide bar and the guide groove extend along the direction of the rotation axis.

7. The lifting mechanism according to claim 6, wherein at least one of the guide bars is disposed on a side of the abutting member facing the connecting member, and at least one of the guide grooves is formed on a side of the connecting member facing the abutting member corresponding to at least one of the guide bars; or one side of the abutting part facing the connecting part is provided with at least one guide groove, and one side of the connecting part facing the abutting part is provided with at least one guide strip corresponding to the at least one guide groove.

8. The lifting mechanism according to claim 1, wherein the transmission member includes a connection plate detachably engaged with the abutting member and a transmission gear provided on the connection plate, and the lifting member is a rack engaged with the transmission gear.

9. The lift mechanism of claim 2, wherein the coupling member comprises a first bevel gear engaged with the gear assembly, the abutment member comprises an abutment plate releasably engageable with the drive member, and the resilient member abuts between the first bevel gear and the abutment plate.

10. The lift mechanism of claim 9, wherein the gear assembly comprises a drive gear coupled to the drive shaft of the drive member, a second bevel gear engaged with the first bevel gear, and at least one transfer gear engaged between the drive gear and the second bevel gear.

11. The lift mechanism of claim 10, wherein the axis of the first bevel gear is perpendicular to the axis of the drive shaft of the drive member.

12. The lifting mechanism as recited in claim 1, wherein the transmission assembly further comprises a shaft, and the transmission member, the abutment member and the connecting member are rotatably coupled to the shaft.

13. The lift mechanism of claim 12, further comprising a housing, wherein the gear assembly and the transmission assembly are disposed within the housing, and wherein the shaft is secured within the housing.

14. The lifting mechanism according to claim 13, wherein the housing includes a first housing and a second housing covering the first housing, the first housing defines a first gear receiving cavity and a first transmission member receiving cavity, the second housing defines a second gear receiving cavity and a second transmission member receiving cavity, the gear assembly is received in a space defined by the first gear receiving cavity and the second gear receiving cavity, and the transmission assembly is received in a space defined by the first transmission member receiving cavity and the second transmission member receiving cavity.

15. The lifting mechanism as claimed in claim 13, wherein the housing defines a through hole, the lifting member is slidably inserted into the through hole, and a stop bar is disposed at one end of the lifting member and stopped by the housing to prevent the lifting member from separating from the housing.

16. The lift mechanism of claim 15, wherein an end of the lift member distal from the stop bar is provided with a connecting portion for connecting to the article.

17. A camera device comprising a camera module, characterized in that the camera device further comprises a lifting mechanism according to any one of claims 1-16, wherein a lifting member of the lifting mechanism is connected to the camera module.

18. An electronic device, comprising a housing and the camera device according to claim 17, wherein the camera device is disposed in the housing, and a lifting mechanism of the camera device drives the camera module to be exposed out of the housing or accommodated in the housing.

19. The electronic device of claim 18, wherein the camera module is rotatably disposed in a housing of the electronic device, and the lifting mechanism rotates the camera module out of or into the housing.

20. The electronic device of claim 18, wherein the camera module is slidably disposed in a housing of the electronic device, and the lifting mechanism drives the camera module to slide out of or into the housing.