CN211039544U - Lifting camera module applying small-tooth-difference planetary reducer - Google Patents

Abstract

The utility model discloses an use poor planetary reducer's of few 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 lifting unit and drive lifting unit's motor and the poor planetary reducer of few tooth, the poor planetary reducer of few tooth includes the shell, be provided with the eccentric shaft of being connected with the motor in the shell, set up at least one eccentric epaxial external gear and with external gear matched with internal tooth cover, the external gear passes through the crosshead shoe shaft coupling and is connected with lifting unit, the motor can drive the lifting unit motion so that the camera module goes up and down through the poor planetary reducer of few tooth. The utility model discloses simple structure, compactness, form are various, and the range of application is wide, and is small, and manufacturing is convenient, and drive ratio scope and transmission power are big, have reduced manufacturing cost, have prolonged life, and stability and reliability are high, have improved the processing procedure yield and the volume production ability of product.

Description

Lifting camera module applying small-tooth-difference planetary reducer

Technical Field

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

SUMMERY OF THE UTILITY MODEL

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

In order to solve at least one of the above technical problems, the utility model provides a following technical scheme:

the utility model provides an use poor planetary reducer's of few tooth 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 the poor planetary reducer of few tooth, the poor planetary reducer of few tooth includes the shell, be provided with the eccentric shaft of being connected with the motor in the shell, set up at least one external gear on the eccentric shaft and with external gear matched with internal tooth cover, the external gear passes through the crosshead shoe shaft coupling and is connected with lifting unit, the motor can drive the lifting unit motion through the poor planetary reducer of few tooth so that the camera module goes up and down.

The utility model has the advantages that: the outer gear is used as a planet gear, the outer gear and the inner gear sleeve have a certain tooth number difference, the motor drives an eccentric shaft of the planetary reducer with small tooth number difference to rotate, the eccentric shaft drives the outer gear to do circular motion and enables the outer gear and the inner gear sleeve to be matched to perform deceleration transmission, namely the outer gear performs composite motion of rotation and revolution, meanwhile, the outer gear converts the composite motion into stable fixed shaft rotation through an output shaft to output so as to enable a lifting assembly to move, thereby controlling a camera module to perform lifting motion, and the planetary transmission with small tooth number difference is performed through the eccentric shaft, the outer gear, the inner gear sleeve and the output shaft, the structure is simple, compact, various in form, wide in application range, small in number of parts, small in size, light in weight, convenient to process and manufacture, large in transmission ratio range and transmission power, stable in operation, small in noise, large in bearing capacity, therefore, 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 the product are improved, and the application and the development of the product are further expanded.

In some embodiments, the oldham coupling includes an output shaft coupled to the lifting assembly and a first slider cooperating with the output shaft and the external gear, the first slider being positioned between the output shaft and the external gear.

In some embodiments, the first sliding block is provided with a first sliding groove matched with the external gear and a second sliding groove matched with the output shaft, the first sliding groove and the second sliding groove are perpendicular to each other, the external gear is provided with a first projection matched with the first sliding groove, and the output shaft is provided with a second projection matched with the second sliding groove.

In some embodiments, the output shaft includes a fourth connecting portion connected to the third connecting portion and the lifting assembly, the second protrusion is disposed on the third connecting portion, the housing is provided with a first through hole matched with the fourth connecting portion, and a diameter of the third connecting portion is larger than a diameter of the first through hole.

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

And a retainer matched with the external 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, 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 oldham coupling 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 invention, the technical solutions can be implemented by adopting conventional means in the art, which are not specifically described.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in 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 invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a first perspective view of a lift camera module using a planetary reducer with few teeth difference provided by the embodiment of the present invention.

Fig. 2 is a second perspective view of the lifting camera module using the planetary reducer with less teeth difference provided by the embodiment of the present invention.

Fig. 3 is an exploded view of a planetary reducer with small teeth difference according to an embodiment of the present invention.

Fig. 4 is a perspective view of a planetary reducer with small teeth difference according to an embodiment of the present invention.

Fig. 5 is a cross-sectional view of a planetary reducer with small teeth difference according to an embodiment of the present invention.

Fig. 6 is a perspective view of a housing according to an embodiment of the present invention.

In the drawing, the reference numerals indicate that the planetary reduction gear 1 with small teeth difference, the housing 11, the inner gear set 111, the first through hole 112, the limit step 113, the first groove 114, the second protruding portion 115, the eccentric shaft 12, the first connecting portion 121, the eccentric portion 122, the second connecting portion 123, the balance weight 124, the first connecting hole 125, the external gear 13, the first projection 131, the arc surface 1311, the oldham coupling 14, the first slider 141, the first chute 1411, the second chute 1412, the escape through hole 1413, the output shaft 142, the second projection 1421, the third connecting portion 1422, the fourth connecting portion 1423, the second connecting hole 1424, the third connecting hole 1425, the retainer 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 protruding portion 41, the third through hole 411, the lifting assembly 5, the screw mechanism 51, the 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 element 55, and the buffer plate 56.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention 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 but not limiting of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "both ends", "both sides", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of 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 invention. 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 invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 invention can be understood in specific cases to those skilled in the art.

Fig. 1 is a first perspective view of a lift camera module using a few-tooth differential planetary reducer provided by the embodiment of the present invention, fig. 2 is a second perspective view of a lift camera module using a few-tooth differential planetary reducer provided by the embodiment of the present invention, fig. 3 is a perspective view of a few-tooth differential planetary reducer provided by the embodiment of the present invention, fig. 4 is a perspective view of a few-tooth differential planetary reducer provided by the embodiment of the present invention, fig. 5 is a cross-sectional view of a few-tooth differential planetary reducer provided by the embodiment of the present invention, and fig. 6 is a perspective view of a housing provided by the embodiment of the present invention.

Example (b):

as shown in fig. 1 to 6, a lifting camera module using a small-tooth-difference planetary reducer includes a support frame 2, a camera module 4, a lifting assembly 5 matched with the camera module 4, a motor 3 for driving the lifting assembly 5, and a small-tooth-difference planetary reducer 1 are disposed on the support frame 2, and the motor 3 is connected with the lifting assembly 5 through the small-tooth-difference planetary reducer 1. Few poor planetary reducer 1 of tooth includes shell 11, be provided with the eccentric shaft 12 of being connected with motor 3 in the shell 11, set up at least one external gear 13 on eccentric shaft 12 and with external gear 13 matched with interior tooth cover 111, external gear 13 passes through oldham coupling 14 and is connected with lifting unit 5, oldham coupling 14 is located few poor planetary reducer 1 generally and keeps away from motor 3, motor 3 can drive lifting unit 5 through few poor planetary reducer 1 and move so that camera module 4 goes up and down, the rising of camera module 4 is the stretching out of camera module 4, the decline of camera module 4 is the withdrawal or the hiding of camera module 4. In addition, the oldham coupling 14 can also be replaced by a universal coupling, but the universal coupling has a complex structure, occupies a large space and has high cost.

The shell 11 and the outer gear 13 can be made of metal materials, engineering plastics, plastic alloys or other suitable materials, for example, 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. The external gear 13 and the internal gear sleeve 111 can adopt an involute type, a cycloid type or other suitable types, the involute type has a compact structure, the output rotating speed is free of fluctuation, the transmission is stable, the transmission efficiency is high, the service life is long, the application range is wide, and compared with the involute type, the involute type has the advantages of larger overlap ratio, more stable transmission, small and uniform abrasion and good lubrication. Usually, the inner gear sleeve 111 is integrated with the outer shell 11, so that the structure is more stable and reliable.

In the using process, the external gear 13 is used as a planetary gear, the external gear 13 and the internal gear sleeve 111 have a certain tooth number difference, the motor 3 drives the eccentric shaft 12 of the planetary reducer 1 with small tooth number difference to rotate, the eccentric shaft 12 drives the external gear 13 to perform circular motion and enables the external gear 13 and the internal gear sleeve 111 to be matched for speed reduction transmission, namely, the external gear 13 performs composite motion of rotation and revolution, and meanwhile, the external gear 13 converts the composite motion into stable fixed-axis rotation through the oldham coupling 14 to output so as to enable the lifting assembly 5 to move, thereby controlling the camera module 4 to perform lifting motion. Compared with the prior art, the utility model discloses a poor planetary reducer of few tooth 1, the output torque of motor 3 has been improved, be convenient for adjust the motion of lifting unit 5 with the elevating speed of better control camera module 4, the poor planetary reducer of few tooth 1 is through eccentric shaft 12, outer gear 13, interior tooth cover 111 and crosshead shoe shaft coupling 14 carry out the poor planetary transmission of few tooth, moreover, the steam generator is simple in structure, it is compact, the form is various, the range of application is wide, spare part quantity is less, small in size, light in weight, manufacturing is convenient, drive ratio scope and transmission power are big, operate steadily, the noise is little, bearing capacity is big, energy loss is low, the wearability is good etc., thereby manufacturing cost has been reduced, service life has been prolonged, stability and reliability are high, the processing procedure yield and the volume production ability of product have been improved, and then the application and the development of product have been enlarged.

The oldham coupling 14 includes an output shaft 142 connected to the elevating unit 5 and a first slider 141 engaged with the output shaft 142 and the external gear 13, and the first slider 141 is located between the output shaft 142 and the external gear 13. In the using process, the eccentric shaft 12 drives the external gear 13 to perform circular motion and enables the external gear 13 to be matched with the inner gear sleeve 111 for speed reduction transmission, that is, the external gear 13 performs composite motion of rotation and revolution, and simultaneously the first sliding block 141 respectively performs relative sliding with the external gear 13 and the output shaft 142, so that the composite motion of the external gear 13 is converted into stable fixed-axis rotation to be output by the output shaft 142, the lifting assembly 5 is driven to move by the output shaft 142, and the stability and the reliability are high.

The first sliding block 141 is provided with a first sliding chute 1411 matched with the external gear 13 and a second sliding chute 1412 matched with the output shaft 142, the first sliding chute 1411 and the second sliding chute 1412 are perpendicular to each other, the external gear 13 is provided with a first bump 131 matched with the first sliding chute 1411, and the output shaft 142 is provided with a second bump 1421 matched with the second sliding chute 1412, so that the structural strength of the involute external gear 13, the first sliding block 141 and the output shaft 142 can be guaranteed to be high, the processing is convenient, and the involute external gear involute first sliding block output shaft involute external. In use, the first slide slot 1411 is engaged with the first protrusion 131 and the second slide slot 1412 is engaged with the second protrusion 1421, so that the first slide block 141 can slide relative to the external gear 13 and the output shaft 142, respectively.

The output shaft 142 includes a fourth connecting portion 1423 connected to the third connecting portion 1422 and the lifting assembly 5, the second protrusion 1421 is disposed on the third connecting portion 1422, the housing 11 is provided with a first through hole 112 matched with the fourth connecting portion 1423, the diameter of the third connecting portion 1422 is greater than that of the first through hole 112, the third connecting portion 1422 of the output shaft 142 is connected to the lifting assembly 5 through the first through hole 112, and the structure is more stable. 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 fourth connecting portion 1423, so that the stability of the output shaft 142 is improved through the second protruding portion 115, and the operation is safer and more reliable.

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 external gear 13, the external gear 13 is sleeved on the eccentric portion 122, and one end of the external gear 13 can be abutted against the first connecting portion 121 to be pressed together, so that the assembly precision of the eccentric shaft 12 and the external 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, namely, the angle between the axis of the eccentric portion 122 and the axis of the balance weight 124 is 180 degrees, and a certain centripetal force and an inertia force can be generated when the eccentric shaft 12 and the external gear 13 perform a circular motion, so that the centripetal force and the inertia force can be balanced by the arrangement of the balance weight 124, and the bearing capacity of the product is improved.

The eccentric portion 122 may further have a second connecting portion 123 at an end thereof away from the first connecting portion 121, the third connecting portion 1422 is provided with a second connecting hole 1424 engaged with the second connecting portion 123, the first slider 141 is provided with an avoiding through hole 1413 engaged with the second connecting portion 123, the second connecting portion 123 passes through the avoiding through hole 1413 and is rotatably connected with the second connecting hole 1424, and the second connecting hole 1424 is generally disposed on the second protrusion 1421. In the use process, when the motor 3 drives the eccentric shaft 12 to perform circular motion, the second connecting portion 123 performs fixed-axis rotation in the second connecting hole 1424, so that the second connecting portion 123 can bear a certain radial load during eccentric transmission, thereby sharing the acting force borne by the driving shaft of the motor 3, and the stability and the reliability are higher. Generally, the diameter of the first connecting portion 121 is larger than that of the shaft hole of the outer gear 13, and the diameter of the second connecting portion 123 is smaller than that of the eccentric portion 122, which facilitates assembly. In addition, the avoiding through hole 1413 penetrates through the first sliding groove 1411 and the second sliding groove 1412, the two first protruding blocks 131 are symmetrically arranged along the avoiding through hole 1413, and the cambered surfaces 1311 are respectively arranged at one ends, close to the avoiding through hole 1413, of the two first protruding blocks 131, so that the two first protruding blocks can be better matched with the second connecting portion 123 in the sliding process, and are more stable and reliable.

One end of the housing 11 close to the motor 3 is provided with a retainer 15 matched with the external gear 13, namely, the retainer 15 is arranged at the inlet of the housing 11, the outer diameter of the retainer 15 is equal to the inner diameter of the housing 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 external gear 13 and the oldham coupling 14 are assembled and then are installed in the shell 11, then the retainer 15 is plugged into the inlet of the shell 11, the retainer 15 can be in contact fit with one end of the external gear 13, so that the external gear 13 and the oldham coupling 14 are limited in the shell 11, the external gear 13 and the output shaft 14 are prevented from moving too much in the shell 11 to break up the assembling relation, and the eccentric shaft 12 is conveniently connected with the 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 far away from the 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.

Be provided with in the shell 11 with outer gear 13 matched with spacing step 113, spacing step 113 is located the one end that the holder 15 was kept away from to interior tooth sleeve 111, outer gear 13 and interior tooth sleeve 111 are located between holder 15 and spacing step 113, in the use, can make outer gear 13 more stable in the casing through holder 15 and spacing step 113, guarantee that outer gear 13 moves better to the reliability of product has been improved.

The lifting assembly 5 includes a lead screw mechanism 51 and a guide mechanism 52, the lead screw mechanism 51 is provided with a moving block 53, 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 has a first protruding portion 41 connected with the moving block 53, the moving block 53 is preferably detachably connected with the first protruding portion 41, for example, the moving block 53 is elastically connected with the first protruding portion 41 by a spring, the moving block 53 is frictionally connected with the first protruding portion 41 by a friction column and a friction hole, the moving block 53 is detachably connected with the first protruding portion 41 by a magnetic attraction connection or other suitable methods, the first protruding portion 41 is slidably connected with the guide mechanism 52, and the output shaft 142 of the oldham coupling 14 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 the output shaft 142 of the Oldham coupling 14, a third connecting hole 1425 connected with the screw rod 511 is arranged on the output shaft 142, 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 arranged on the moving block 53, a third through hole 411 in sliding connection with the guide rod 521 is arranged on the first extending part 41, and an avoiding through hole matched with the screw rod 511 is usually arranged on the first extending part 41. In addition, the cross section of the third connecting hole 1425 may be non-circular or polygonal such as triangular, rectangular, D-shaped, etc., and one end of the lead screw may be provided with a connecting portion matched with the shape of the third connecting hole 1425, so that the connecting portion and the third connecting hole 1425 are connected without circumferential rotation, and the connection is more convenient and the stability and 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 are only embodiments of the present invention, which are not intended to limit the scope of the present invention, and it should be understood that modifications and substitutions can be made by those skilled in the art without departing from the inventive concept, and all such modifications and substitutions are intended to be included 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 (10)

1. The lifting camera module is characterized by comprising a support frame (2), wherein the support frame (2) is provided with a camera module (4), a lifting component (5) matched with the camera module (4), a motor (3) driving the lifting component (5) and a small-tooth-difference planetary reducer (1), the small-tooth-difference planetary reducer (1) comprises a shell (11), an eccentric shaft (12) connected with the motor (3), at least one external gear (13) arranged on the eccentric shaft (12) and an internal gear sleeve (111) matched with the external gear (13) are arranged in the shell (11), the external gear (13) is connected with the lifting component (5) through a cross slide block coupling (14), and the motor (3) can drive the lifting component (5) to move through the small-tooth-difference planetary reducer (1) so that the camera module (4) enters the lifting component (5) And lifting.

2. The lifting camera module using the planetary reducer with small teeth difference as claimed in claim 1, wherein the Oldham coupling (14) comprises an output shaft (142) connected to the lifting assembly (5) and a first slider (141) engaged with the output shaft (142) and the outer gear (13), the first slider (141) being located between the output shaft (142) and the outer gear (13).

3. The lifting camera module applying the planetary reducer with small tooth difference as claimed in claim 2, wherein the first slider (141) is provided with a first sliding chute (1411) matched with the external gear (13) and a second sliding chute (1412) matched with the output shaft (142), the first sliding chute (1411) and the second sliding chute (1412) are perpendicular to each other, the external gear (13) is provided with a first bump (131) matched with the first sliding chute (1411), and the output shaft (142) is provided with a second bump (1421) matched with the second sliding chute (1412).

4. The lifting camera module with the small tooth difference planetary reducer as claimed in claim 3, wherein the output shaft (142) comprises a third connecting portion (1422) and a fourth connecting portion (1423) connected to the lifting assembly (5), the second protrusion (1421) is disposed on the third connecting portion (1422), the housing (11) is provided with a first through hole (112) matched with the fourth connecting portion (1423), and the diameter of the third connecting portion (1422) is larger than that of the first through hole (112).

5. The lifting camera module using the planetary reducer with small teeth difference as claimed in claim 1, wherein a retainer (15) engaged with the external gear (13) is disposed at an end of the housing (11) close to the motor (3), and a second through hole (151) for passing the eccentric shaft (12) is disposed on the retainer (15).

6. The elevating camera module using a planetary reducer with small teeth difference as described in claim 1, wherein said eccentric shaft (12) comprises a first connecting portion (121) and an eccentric portion (122) in sequence, said first connecting portion (121) is coaxially connected with a driving shaft of said motor (3), and said external gear (13) is disposed on said 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 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) disposed on the screw mechanism (51), and a guiding mechanism (52) engaged with the moving block (53), the camera module (4) has a first protruding portion (41) connected with the moving block (53), the first protruding portion (41) is slidably connected with the guiding mechanism (52), and the Oldham coupling (14) is connected with the screw mechanism (51).

9. The lifting camera module with the small teeth difference planetary reducer as claimed in claim 8, wherein the moving block (53) is provided with a permanent magnet (54) magnetically connected with the first protruding portion (41) so that the moving block (53) is detachably connected with the first protruding portion (41).

10. The lifting camera module using the planetary reducer with small teeth difference as claimed in claim 9, wherein the lower end of the guiding mechanism (52) is provided with an elastic element (55) for being engaged with the first protruding portion (41) after being separated from the moving block (53), and the moving block (53) is provided with a buffer plate (56) engaged with the first protruding portion (41).

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