CN110715031A

CN110715031A - Lifting camera module applying small-tooth-difference involute planetary reducer

Info

Publication number: CN110715031A
Application number: CN201911009961.8A
Authority: CN
Inventors: 李志锋; 林岳崇; 李华京
Original assignee: Leading Technology (dongtai) Co Ltd
Current assignee: Leading Technology (dongtai) Co Ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-01-21
Also published as: WO2021077469A1

Abstract

The utility model provides an use few tooth difference planetary reducer's that gradually bursts at seams lift camera module, which comprises a supporting fram, be provided with the camera module on the support frame, with camera module matched with lifting unit and drive lifting unit's motor and few tooth difference planetary reducer that gradually bursts at seams, few tooth difference planetary reducer that gradually bursts at seams includes the eccentric shaft of being connected with the motor, set up at least one on the eccentric shaft and gradually burst at seams the outer gear and with gradually burst at seams outer gear matched with ring gear, the outer gear that gradually bursts at seams passes through the output shaft and is connected with lifting unit, the motor can drive the lifting unit through few tooth difference planetary reducer that gradually bursts at seams and move so that the camera module goes up. The novel gear box is simple and compact in structure, various in form, wide in application range, small in size, convenient to machine and manufacture, large in transmission ratio range and transmission power, capable of reducing manufacturing cost, prolonging service life, high in stability and reliability and capable of improving the process yield and the mass production capacity of products.

Description

Lifting camera module applying small-tooth-difference involute planetary reducer

Technical Field

The utility model relates to a camera lift technical field especially relates to an use few poor involute planetary reducer's of tooth lift camera module.

Background

With the rapid development of science and technology, 3C electronic products have been widely used in the work and life of people, especially in mobile terminal electronic devices such as mobile phones and tablet computers, and 3C electronic products are short for computers (computers), Communication (Communication) and consumer electronics (consumer electronics). In order to meet the consumption experience of people, a high screen ratio or full screen technology becomes a main development trend of the electronic equipment, the advantages of high screen ratio or full screen atmosphere, attractiveness and the like are prominent, the consumption experience of people is met, and the screen requirement of people on the electronic equipment is higher and higher. However, as technologies such as an integrated camera under a screen are far from mature, the camera cannot penetrate through a display screen to take a picture, so that a front-facing camera is required to be designed in an area outside the display screen, and in order to realize a full-screen, the camera is often hidden on the back of the display screen, and is extended out when taking a picture, namely, the camera is designed to be a liftable camera, and a novel wave has been formed in recent years as a lifting camera technology for realizing an effective mode of the full-screen.

In the prior art, the lift camera mainly has manual press pop-up formula, manual rotation type, variable speed motor is automatic formula etc. variable speed motor is automatic formula commonly used, and convenient operation, but there is certain defect in the design of the derailleur of current lift camera, gear train or worm gear etc. that the structure is complicated are often adopted, spare part is more, the design volume is great, the manufacturing accuracy requires very high, need guarantee not only that tiny part makes qualified but also that the whole high rotational speed of high moment of torsion that can undertake of mechanism, thereby cause manufacturing cost height, low service life, easy wearing and tearing, poor reliability etc. lead to the processing procedure yield of derailleur low, be difficult to volume production etc. have restricted the application and the development of lift camera.

Disclosure of Invention

The utility model provides an use poor involute planetary reducer's of few tooth lift camera module to the problem that above-mentioned prior art exists.

In order to solve at least one of the above technical problems, the present disclosure proposes the following technical solutions:

the utility model provides an use few poor involute planetary reducer's of tooth lift camera module, the loach carrying platform comprises a supporting fram, be provided with the camera module on the support frame, with camera module matched with lift subassembly and drive lift subassembly's motor and few poor involute planetary reducer of tooth, few poor involute planetary reducer includes the eccentric shaft of being connected with the motor, set up at least one involute outer gear on the eccentric shaft and with involute outer gear matched with ring gear, involute outer gear passes through the output shaft and is connected with lift subassembly, the motor can drive the motion of lift subassembly through few poor involute planetary reducer of tooth so that the camera module goes up and down.

The beneficial effects of this disclosure are: the camera module is controlled to perform lifting motion, and the small-tooth-difference planetary transmission is performed through the eccentric shaft, the involute outer gear, the inner gear ring and the output shaft The novel high-strength wear-resistant steel wire rope has the advantages of low noise, high bearing capacity, low energy loss, good wear resistance and the like, so that the manufacturing cost is reduced, the service life is prolonged, the stability and the reliability are high, the process yield and the mass production capacity of products are improved, and the application and the development of the products are further expanded.

In some embodiments, the small tooth difference involute planetary reducer further comprises a shell, wherein the inner gear ring is arranged in the shell, the eccentric shaft, the involute outer gear and the output shaft are located in the shell, and a first through hole which is correspondingly matched with the output shaft is formed in one end, away from the motor, of the shell.

In some embodiments, a retainer matched with the involute outer gear is arranged at one end, close to the motor, in the shell, and a second through hole for the eccentric shaft to pass through is formed in the retainer.

In some embodiments, a limit step matched with the involute outer gear is arranged in the shell, the limit step is positioned at one end, away from the holder, of the inner gear ring, and the involute outer gear and the inner gear ring are positioned between the holder and the limit step.

In some embodiments, a plurality of pin shafts are uniformly distributed on one end, away from the motor, of the involute outer gear along the circumferential direction of the involute outer gear, a chassis is arranged on one end, close to the involute outer gear, of the output shaft, the diameter of the chassis is larger than that of the first through hole, a plurality of pin holes correspondingly matched with the pin shafts are formed in the chassis along the circumferential direction of the output shaft, and the center distance between the inner gear ring and the involute outer gear is equal to the radius difference between the pin holes and the pin shafts.

In some embodiments, the eccentric shaft includes a first connection portion coaxially connected with a driving shaft of the motor and an eccentric portion on which the involute outer gear is disposed in order.

In some embodiments, the first connecting portion is provided with a balance block, the axis of the eccentric portion, the axis of the balance block and the axis of the first connecting portion are parallel and in the same plane, and the axis of the first connecting portion is located between the axis of the eccentric portion and the axis of the balance block.

In some embodiments, the lifting assembly includes a screw mechanism, a moving block disposed on the screw mechanism, and a guide mechanism engaged with the moving block, the camera module has a first protruding portion connected with the moving block, the first protruding portion is slidably connected with the guide mechanism, and the output shaft is connected with the screw mechanism.

In some embodiments, the moving block is provided with a permanent magnet in magnetic attraction connection with the first protrusion portion so that the moving block is detachably connected with the first protrusion portion.

In some embodiments, the lower end of the guide mechanism is provided with an elastic element for being matched with the first extending part after the movable block is separated, and the movable block is provided with a buffer plate matched with the first extending part.

In addition, in the technical solutions of the present disclosure, the technical solutions can be implemented by adopting conventional means in the art, unless otherwise specified.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a first perspective view of a lift camera module using a small-tooth-difference involute planetary reducer according to an embodiment of the present disclosure.

Fig. 2 is a second perspective view of a lift camera module using an involute planetary reducer with small tooth difference according to an embodiment of the present disclosure.

Fig. 3 is an exploded view of a small tooth difference involute planetary reducer provided by an embodiment of the disclosure.

Fig. 4 is a perspective view of a small tooth difference involute planetary reducer provided by an embodiment of the disclosure.

Fig. 5 is a cross-sectional view of a small tooth difference involute planetary reducer provided by an embodiment of the disclosure.

Fig. 6 is a perspective view of a housing provided by an embodiment of the present disclosure.

Fig. 7 is an assembly view of an eccentric shaft, an involute outer gear, and an output shaft according to an embodiment of the present disclosure.

In the drawing, the reference numerals indicate that the small tooth difference involute planetary gear set 1, the housing 11, the ring gear 111, the first through hole 112, the limit step 113, the first groove 114, the second extension 115, the eccentric shaft 12, the first connection portion 121, the eccentric portion 122, the second connection portion 123, the balance mass 124, the first connection hole 125, the involute outer gear 13, the pin shaft 131, the output shaft 14, the base plate 141, the pin hole 142, the notch 143, the boss 144, the second connection hole 145, the third connection hole 146, the holder 15, the second through hole 151, the flange 152, the support frame 2, the first passage 21, the seal ring 22, the mounting hole 23, the motor 3, the camera module 4, the first extension 41, the third through hole 411, the lifting assembly 5, the lead screw mechanism 51, the lead screw 511, the guide mechanism 52, the guide rod 521, the moving block 53, the fourth through hole 531, the fifth through hole 532, the permanent magnet 54, the elastic, a buffer plate 56.

Detailed Description

In order to make the objects, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of some, but not all, embodiments of the disclosure and are not to be considered as limiting the disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "both ends", "both sides", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present disclosure and simplifying the description, but do not indicate or imply that the elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present disclosure. Furthermore, the terms "first," "second," "upper," "lower," "primary," "secondary," and the like are used for descriptive purposes only and may be used for purposes of simplicity in more clearly distinguishing between various components and not to indicate or imply relative importance.

In the description of the present disclosure, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; 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 disclosure can be understood in specific instances by those of ordinary skill in the art.

Fig. 1 is a first perspective view of a lift camera module using a small tooth difference involute planetary reducer according to an embodiment of the present disclosure, fig. 2 is a second perspective view of a lift camera module using a small tooth difference involute planetary reducer according to an embodiment of the present disclosure, fig. 3 is an exploded view of a small tooth difference involute planetary reducer according to an embodiment of the present disclosure, fig. 4 is a perspective view of a small tooth difference involute planetary reducer according to an embodiment of the present disclosure, fig. 5 is a cross-sectional view of a small tooth difference involute planetary reducer according to an embodiment of the present disclosure, fig. 6 is a perspective view of a housing according to an embodiment of the present disclosure, and fig. 7 is an assembly view of an eccentric shaft, an involute external gear, and an output shaft according to an embodiment of the present disclosure.

Example (b):

as shown in fig. 1 to 7, a lifting camera module using a small-tooth-difference involute planetary reducer comprises a support frame 2, wherein a camera module 4, a lifting component 5 matched with the camera module 4, a motor 3 for driving the lifting component 5 and the small-tooth-difference involute planetary reducer 1 are arranged on the support frame 2, and the motor 3 is connected with the lifting component 5 through the small-tooth-difference involute planetary reducer 1. The few-tooth-difference involute planetary reducer 1 comprises an eccentric shaft 12 connected with a motor 3, at least one involute outer gear 13 arranged on the eccentric shaft 12 and an inner gear ring 111 matched with the involute outer gear 13, the involute outer gear 13 is connected with a lifting component 5 through an output shaft 14, the motor 3 can drive the lifting component 5 to move through the few-tooth-difference involute planetary reducer 1 so as to enable a camera module 4 to lift, the lifting of the camera module 4 is the extension of the camera module 4, the descending of the camera module 4 is the retraction or the hiding of the camera module 4, the involute outer gear 13 is matched with the inner gear ring 111, the structure is compact, the output rotating speed is free of fluctuation, the transmission is stable, the transmission efficiency is high, the service life is long, and the application range is wide.

In the using process, the involute external gear 13 is used as a planet gear, the involute external gear 13 has a certain tooth number difference with the inner gear ring 111, the motor 3 drives the eccentric shaft 12 of the involute planetary reducer 1 with a small tooth difference to rotate, the eccentric shaft 12 drives the involute external gear 13 to perform circular motion and enables the involute external gear 13 to be matched with the inner gear ring 111 to perform speed reduction transmission, namely, the involute external gear 13 performs composite motion of rotation and revolution, and meanwhile, the involute external gear 13 converts the composite motion into stable fixed-axis rotation through the output shaft 14 to perform output so as to enable the lifting component 5 to perform motion, thereby controlling the camera module 4 to perform lifting motion. Compared with the prior art, the small-tooth-difference involute planetary reducer 1 is adopted, the output torque of the motor 3 is improved, the motion of the lifting component 5 is convenient to adjust, so that the lifting speed of the camera module 4 is controlled better, the small-tooth-difference involute planetary reducer 1 performs small-tooth-difference planetary transmission through the eccentric shaft 12, the involute outer gear 13, the inner gear ring 111 and the output shaft 14, and the small-tooth-difference involute planetary reducer is simple and compact in structure, various in form, wide in application range, small in number of parts, small in size, light in weight, convenient to machine and manufacture, large in transmission ratio range and transmission power, stable in operation, low in noise, high in bearing capacity, low in energy loss, good in wear resistance and the like, so that the manufacturing cost is reduced, the service life is prolonged, the stability and the reliability are high, the process yield and the mass production capacity of products are improved.

The involute planetary reducer 1 with small tooth difference further comprises a shell 11, an inner gear ring 111 is arranged in the shell 11, an eccentric shaft 12, an involute outer gear 13 and an output shaft 14 are located in the shell 11, one end, far away from the motor 3, of the shell 11 is provided with a first through hole 112 correspondingly matched with the output shaft 14, the output shaft 14 is conveniently connected with the lifting assembly 5 through the first through hole 112, and the inner gear ring 111 and the shell 11 are usually integrated, so that the structure is more stable and reliable. Further, one end of the housing 11, which is far away from the motor 3, is further provided with a second protruding portion 115 which is matched with the output shaft 14, so that the stability of the output shaft 14 is improved through the second protruding portion 115, and the safety and reliability are improved. The outer shell 11 and the involute outer gear 13 can be made of metal materials, engineering plastics, plastic alloys or other suitable materials, for example, the engineering plastics such as nylon and Polyformaldehyde (POM) are adopted, the structure is simple, the production and the processing are convenient, the service life is long, and the production cost is reduced.

One end of the outer shell 11 close to the motor 3 is provided with a retainer 15 matched with the involute outer gear 13, namely, the retainer 15 is arranged at the inlet of the outer shell 11, the outer diameter of the retainer 15 is equal to the inner diameter of the outer shell 11, and the retainer 15 is provided with a second through hole 151 for the eccentric shaft 12 to pass through. In the assembling process, the eccentric shaft 12, the involute external gear 13 and the output shaft 14 are assembled and then are installed in the housing 11, then the retainer 15 is plugged into the inlet of the housing 11, the retainer 15 can be in contact fit with one end of the involute external gear 13, so that the involute external gear 13 and the output shaft 14 are limited in the housing 11, the problem that the involute external gear 13 and the output shaft 14 move too much in the housing 11 to break up the assembling relation is solved, and the eccentric shaft 12 is conveniently connected with the involute external gear 13 and a driving shaft of the motor 3 through the second through hole 151 in the retainer 15, so that the assembling is convenient, and the assembling is more stable and reliable.

The end of the retainer 15, which is far away from the involute outer gear 13, is further provided with a flange 152, the housing 11 is internally provided with a first groove body 114 matched with the flange 152, the retainer 15 is plugged into the inlet of the housing 11, and the flange 152 is tightly pressed in the first groove body 114, so that the structure is more compact and stable, and the connection is more firm. The holder 15 may be made of metal or plastic, and may be installed in the housing 11 by a tight fit, such as a transition fit or an interference fit, or may be welded when the housing 11 and the holder 15 are both made of metal.

The outer shell 11 is internally provided with a limit step 113 matched with the involute outer gear 13, the limit step 113 is positioned at one end of the inner gear ring 111 far away from the retainer 15, the involute outer gear 13 and the inner gear ring 111 are positioned between the retainer 15 and the limit step 113, in the using process, the involute outer gear 13 can be more stable in a machine shell through the retainer 15 and the limit step 113, the involute outer gear 13 is guaranteed to move better, and therefore the reliability of a product is improved.

A plurality of pin shafts 131 are uniformly distributed on one end of the involute external gear 13, which is far away from the motor 3, along the circumferential direction, a chassis 141 is arranged on one end of the output shaft 14, which is close to the involute external gear 13, the diameter of the chassis 141 is larger than the diameter of the first through hole 112 and the diameter of the output shaft 14, the chassis 141 is positioned in the shell 11, the output shaft 14 is connected with the lifting assembly 5 through the first through hole 112, a plurality of pin holes 142 correspondingly matched with the pin shafts 131 are arranged on the chassis 141 along the circumferential direction of the output shaft 14, the pin holes 142 are in one-to-one correspondence with the pin shafts 131, so that the structural strength of the involute external gear 13 and the output shaft 14 is high, the processing is convenient, the involute external gear 13 and the chassis 141 are particularly suitable for small involute external gears 13, the number of the pin holes 142 and the pin shafts 131 is determined according to specific conditions, the center distance between the internal gear 111 and and (6) outputting. In addition, the pin hole 142 is communicated with the outside through the notch 143 along the radial direction of the output shaft 14, that is, a groove body is formed along the radial direction of the output shaft 14, so that the processing is more convenient, and a certain weight is also reduced.

The eccentric shaft 12 sequentially comprises a first connecting portion 121 and an eccentric portion 122, the first connecting portion 121 is coaxially connected with a driving shaft of the motor 3, a first connecting hole 125 connected with the driving shaft of the motor 3 is formed in the first connecting portion 121, the diameter of the first connecting portion 121 is generally larger than the diameter of a shaft hole of the involute outer gear 13, the involute outer gear 13 is sleeved on the eccentric portion 122, and one end of the involute outer gear 13 can be abutted to the first connecting portion 121, so that the assembling precision of the eccentric shaft 12 and the involute outer gear 13 can be better ensured. In addition, the cross-section of first connecting hole 125 can be non-circular or polygon such as triangle-shaped, rectangle, D type, and the drive shaft of motor 3 can be provided with the shape assorted connecting portion with first connecting hole 125, can not the circular rotation each other after connecting portion and first connecting hole 125 are connected like this, and it is more convenient to operate, and stability and reliability are better.

The first connecting portion 121 is provided with the balance weight 124, the axis of the eccentric portion 122, the axis of the balance weight 124 and the axis of the first connecting portion 121 are parallel and in the same plane, the axis of the first connecting portion 121 is located between the axis of the eccentric portion 122 and the axis of the balance weight 124, that is, the angle between the axis of the eccentric portion 122 and the axis of the balance weight 124 is 180 °, and a certain centripetal force and an inertial force are generated when the eccentric shaft 12 and the involute outer gear 13 perform circular motion, so that the centripetal force and the inertial force can be balanced by the arrangement of the balance weight 124, and the bearing capacity of the product is improved.

The end of the eccentric portion 122 away from the first connection portion 121 may further be provided with a second connection portion 123, and the chassis 141 is provided with a second connection hole 145 engaged with the second connection portion 123. In the using process, when the motor 3 drives the eccentric shaft 12 to perform circular motion, the second connecting part 123 performs fixed-axis rotation in the second connecting hole 145, so that the second connecting part 123 can bear a certain radial load during eccentric transmission, and the acting force borne by the driving shaft of the motor 3 is shared, and the stability and the reliability are higher. Generally, the diameter of the first connecting portion 121 is larger than the shaft hole diameter of the involute outer gear 13, and the diameter of the second connecting portion 123 is smaller than the diameter of the eccentric portion 122, which facilitates assembly. Further, one end of the chassis 141 close to the involute outer gear 13 is further provided with a boss 144 matched with the involute outer gear 13, the boss 144 is located in an interval defined by all pin holes 142, and the second connecting hole 145 is formed in the boss 144, so that the eccentric shaft 12 can be better matched with the output shaft 14, and the eccentric shaft is more stable and reliable.

The lifting assembly 5 comprises a lead screw mechanism 51 and a guide mechanism 52, a moving block 53 is arranged on the lead screw mechanism 51, when the moving block 53 moves through the lead screw mechanism 51, the moving block 53 is matched with the guide mechanism 52 and slides along the guide mechanism 52, the camera module 4 is provided with a first protruding part 41 connected with the moving block 53, the moving block 53 is preferably detachably connected with the first protruding part 41, for example, a spring is adopted to elastically connect the moving block 53 with the first protruding part 41, friction columns and friction holes are adopted to frictionally connect the moving block 53 with the first protruding part 41, a magnetic force adsorption connection or other suitable modes are adopted to detachably connect the moving block 53 with the first protruding part 41, the first protruding part 41 is slidably connected with the guide mechanism 52, and the output shaft 14 of the less-tooth-difference involute planetary reducer 1 is coaxially connected with the lead screw mechanism 51. In the use, when the external force that camera module 4 received strikes and is greater than the power of being connected between movable block 53 and the first extension 41, camera module 4's first extension 41 separates with movable block 53 and falls along guiding mechanism 52, camera module 4 and lifting unit 5's detachable is connected has been realized, prevent impact force direct action transmission component, transmission component's damage has been reduced effectively, thereby the shock resistance of product has been promoted, stability and reliability, long service life, process yield and volume production ability are higher, and the steam generator is simple in structure, processing, convenience such as equipment, low in production cost. The screw mechanism 51 may be replaced with another mechanism capable of moving up and down the moving block 53 in the related art.

The screw rod mechanism 51 comprises a screw rod 511 coaxially connected with an output shaft 14 of the small tooth difference involute planetary reducer 1, a third connecting hole 146 connected with the screw rod 511 is formed in the output shaft 14, a moving block 53 is in threaded connection with the screw rod 511, the guide mechanism 52 comprises a guide rod 521 arranged in parallel with the screw rod, a fourth through hole 531 in sliding connection with the guide rod 521 is formed in the moving block 53, a third through hole 411 in sliding connection with the guide rod 521 is formed in the first extending portion 41, and an avoiding through hole matched with the screw rod 511 is usually formed in the first extending portion 41. In addition, the cross section of the third connecting hole 146 can be non-circular or polygonal such as triangular, rectangular and D-shaped, and a connecting part matched with the shape of the third connecting hole 146 can be arranged at one end of the screw rod, so that the connecting part and the third connecting hole 146 cannot rotate circumferentially after being connected, the connection is more convenient, and the stability and the reliability are better.

The moving block 53 is provided with a permanent magnet 54 which is in magnetic adsorption connection with the first extension part 41, so that the moving block 53 and the first extension part 41 can be connected in a separable mode, the first extension part 41 is made of a magnetic material, the structure is simple, and the processing, the assembly and the like are convenient. In the use, when the external force that camera module 4 received strikes and is greater than the power of being connected between movable block 53 and the first extension 41, camera module 4's first extension 41 separates with movable block 53 and falls along guiding mechanism 52, camera module 4 and lifting unit 5's detachable is connected has been realized, prevent impact force direct action transmission component, transmission component's damage has been reduced effectively, thereby the shock resistance of product has been promoted, stability and reliability, service life is longer, process yield and volume production ability are higher. Furthermore, the moving block 53 is provided with a fifth through hole 532 for placing the permanent magnet 54, and the permanent magnet 54 is fixedly installed in the fifth through hole 532, so that the installation is convenient, the structure is compact, and the stability and the firmness are higher.

The lower end of the guide mechanism 52 is provided with an elastic element 55 which is used for being matched with the first extending part 41 after being separated from the moving block 53, the elastic element 55 can be made of a spring, rubber or foam, the elastic element 55 can be made of a spring generally, the spring is sleeved on the guide rod, and the lower end of the spring is fixed on the support frame 2. In the use, when the external force that camera module 4 received strikes and is greater than the power of being connected between movable block 53 and the first extension 41, camera module 4's first extension 41 separates with movable block 53 and falls along guiding mechanism 52, camera module 4's first extension 41 contacts the back with the elastic element 55 of guiding mechanism 52 lower extreme, elastic element 55 can conduct the impact force outside in order to play the effect of buffer protection, it is effectual to cushion, thereby the stability and the reliability of product have been promoted, the life of product has been prolonged longer.

The moving block 53 is provided with a buffer plate matched with the first extending part 41, the buffer plate is positioned between the moving block 53 and the first extending part 41, when the external force impact on the camera module 4 is greater than the magnetic attraction force between the moving block 53 and the first extending part 41, the first extending part 41 of the camera module 4 is separated from the moving block 53 and falls down along the guide mechanism 52, after the first extending part 41 of the camera module 4 is contacted with the elastic element 55 at the lower end of the guide mechanism 52, the camera module 4 stops moving after the buffer protection of the elastic element 55, the screw mechanism 51 rotates to make the moving block 53 fall down, the moving block 53 can be magnetically adsorbed and connected with the first extending part 41 again when falling to a certain position, and a certain collision force can be generated when the moving block 53 is magnetically adsorbed and connected with the first extending part 41 again, so the buffer plate can play a role of buffer protection, the moving block 53 is prevented from directly touching the first extension portion 41, which is safer and more reliable.

The buffer plate 56 can be made of rubber, polyurethane or foam, the rubber has the advantages of good elasticity, high strength, low price and the like, the polyurethane has the advantages of high flexibility, rebound resilience, mechanical strength, oxidation stability, excellent oil resistance and the like, and the foam has the advantages of elasticity, light weight, quick pressure-sensitive fixation, convenient use, free bending, ultrathin volume, reliable performance and the like.

The support frame 2 can be further provided with the first passageway 21 with 4 sliding connection of camera module, camera module 4 can be followed first passageway 21 and go up and down in order to stretch out and hide, the exit of first passageway 21 can also be provided with 4 matched with sealing washer 22 of camera module, can prevent dust, water etc. entering through sealing washer 22, and is safer, reliable, still be provided with mounting hole 23 on the support frame 2, so that carry out fixed connection with other equipment, the quantity and the position of mounting hole 23 are decided according to specific circumstances.

The foregoing is directed to embodiments of the present disclosure, which are provided for illustration only and not for limitation, and it is understood that modifications and substitutions may be made by those skilled in the art without departing from the spirit of the disclosure and all such modifications and substitutions are to be considered within the scope of the appended claims. In this case all the details may be replaced with equivalent elements, and the materials, shapes and dimensions may be any.

Claims

1. The utility model provides an use few tooth difference planetary reducer's lift camera module that gradually bursts at seams, a serial communication port, including support frame (2), be provided with camera module (4) on support frame (2), with camera module (4) matched with lifting unit (5) and drive motor (3) and few tooth difference of gradually bursts at seams planetary reducer (1) of lifting unit (5), few tooth difference gradually burst at seams planetary reducer (1) include with eccentric shaft (12) that motor (3) are connected, set up and be in at least one on eccentric shaft (12) gradually burst at seams external gear (13) and with gradually burst at seams external gear (13) matched with ring gear (111), gradually burst external gear (13) through output shaft (14) with lifting unit (5) are connected, motor (3) pass through few tooth difference gradually burst at seams planetary reducer (1) can drive lifting unit (5) move so that camera module (4) advance to gradually burst at seams external gear (13) and gradually burst at seams external gear (13) matched And lifting.

2. The lifting camera module applying the small tooth difference involute planetary reducer according to claim 1, wherein the small tooth difference involute planetary reducer (1) further comprises a shell (11), the inner gear ring (111) is arranged in the shell (11), the eccentric shaft (12), the involute outer gear (13) and the output shaft (14) are located in the shell (11), and a first through hole (112) correspondingly matched with the output shaft (14) is formed in one end, far away from the motor (3), of the shell (11).

3. The lifting camera module group using the small tooth difference involute planetary reducer as claimed in claim 2, wherein a retainer (15) matched with the involute outer gear (13) is arranged at one end of the housing (11) close to the motor (3), and a second through hole (151) for the eccentric shaft (12) to pass through is formed in the retainer (15).

4. The lifting camera module applying the small tooth difference involute planetary reducer according to claim 3, wherein a limiting step (113) matched with the involute outer gear (13) is arranged in the shell (11), the limiting step (113) is located at one end, far away from the retainer (15), of the inner gear ring (111), and the involute outer gear (13) and the inner gear ring (111) are located between the retainer (15) and the limiting step (113).

5. The lifting camera module applied to the small-tooth-difference involute planetary reducer is characterized in that a plurality of pin shafts (131) are uniformly distributed at one end, far away from the motor (3), of the involute outer gear (13) in the circumferential direction of the involute outer gear, a chassis (141) is arranged at one end, close to the involute outer gear (13), of the output shaft (14), the diameter of the chassis (141) is larger than that of the first through hole (112), a plurality of pin holes (142) correspondingly matched with the pin shafts (131) are formed in the chassis (141) in the circumferential direction of the output shaft (14), and the center distance between the inner gear ring (111) and the involute outer gear (13) is equal to the radius difference between the pin holes (142) and the pin shafts (131).

6. The lifting camera module of the small tooth difference involute planetary reducer of claim 1, wherein the eccentric shaft (12) sequentially comprises a first connecting portion (121) and an eccentric portion (122), the first connecting portion (121) is coaxially connected with a driving shaft of the motor (3), and the involute outer gear (13) is arranged on the eccentric portion (122).

7. The lifting camera module of claim 6, wherein the first connecting portion (121) is provided with a balance weight (124), an axis of the eccentric portion (122), an axis of the balance weight (124) and an axis of the first connecting portion (121) are parallel and in the same plane, and an axis of the first connecting portion (121) is located between an axis of the eccentric portion (122) and an axis of the balance weight (124).

8. The lifting camera module with the small teeth difference involute planetary reducer as claimed in any one of claims 1 to 7, wherein the lifting assembly (5) comprises a screw mechanism (51), a moving block (53) arranged on the screw mechanism (51), and a guiding mechanism (52) matched with the moving block (53), the camera module (4) is provided with a first protruding portion (41) connected with the moving block (53), the first protruding portion (41) is connected with the guiding mechanism (52) in a sliding manner, and the output shaft (14) is connected with the screw mechanism (51).

9. The lifting camera module with the small tooth difference involute planetary reducer as claimed in claim 8, wherein a permanent magnet (54) magnetically attached to the first protruding portion (41) is disposed on the moving block (53) so that the moving block (53) and the first protruding portion (41) can be detachably connected.

10. The lifting camera module with the small tooth difference involute planetary reducer as claimed in claim 9, wherein an elastic element (55) matched with the first protruding portion (41) after being separated from the moving block (53) is arranged at a lower end of the guide mechanism (52), and a buffer plate (56) matched with the first protruding portion (41) is arranged on the moving block (53).