CN211059751U - Lifting camera module applying small-tooth-difference cycloidal gear reducer - Google Patents

Abstract

The utility model discloses an use few poor cycloid gear reducer's 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 few poor cycloid gear reducer of tooth, few poor cycloid gear reducer includes the eccentric shaft of being connected with the motor, set up at least one cycloid gear on the eccentric shaft and with cycloid gear matched with cycloid ring gear, the cycloid gear passes through the output shaft and is connected with lifting unit, the motor can drive the lifting unit motion through few poor cycloid gear reducer so that the camera module goes up and down. 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 cycloidal gear reducer

Technical Field

The utility model relates to a camera lift technical field especially relates to an use poor cycloid gear 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 cycloid gear 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 cycloid gear 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 cycloid gear reducer of few tooth, the poor cycloid gear reducer of few tooth includes the eccentric shaft of being connected with the motor, set up at least one cycloid gear on the eccentric shaft and with cycloid gear matched with cycloid gear ring, the cycloid gear passes through the output shaft and is connected with lifting unit, the motor can drive lifting unit through poor cycloid gear reducer and move so that the camera module goes up and down.

The utility model has the advantages that: the cycloidal gear is used as a planet gear, the cycloidal gear and the cycloidal gear ring have a certain tooth number difference, the motor drives an eccentric shaft of the cycloidal gear reducer with small tooth number difference to rotate, the eccentric shaft drives the cycloidal gear to do circular motion and enables the cycloidal gear and the cycloidal gear ring to be matched for speed reduction transmission, namely, the cycloidal gear performs composite motion of rotation and revolution, meanwhile, the cycloidal 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 the camera module to perform lifting motion, and the cycloidal gear, the cycloidal gear ring and the output shaft perform planetary transmission with small tooth number difference Low energy loss, good wear resistance and the like, thereby reducing the manufacturing cost, prolonging the service life, having high stability and reliability, improving the process yield and the mass production capacity of the product, and further expanding the application and development of the product.

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 cycloid gear is disposed in order.

In some embodiments, the end of the eccentric portion away from the first connecting portion is provided with a second connecting portion, and the output shaft is provided with a second connecting hole matched with the second connecting portion.

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

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

In some embodiments, a plurality of pin shafts are uniformly distributed on one end, away from the motor, of the cycloid gear along the circumferential direction of the cycloid gear, a chassis is arranged on one end, close to the cycloid 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 cycloid gear ring and the cycloid gear is equal to the radius difference between the pin holes and the pin shafts.

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 detachably connected to the first extension.

In some embodiments, the moving block is provided with a permanent magnet in magnetic attraction connection with the first protruding 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 cycloidal gear reducer with less tooth difference provided by the embodiment of the present invention.

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

Fig. 3 is an exploded view of a cycloidal gear reducer with small tooth difference according to an embodiment of the present invention.

Fig. 4 is a perspective view of a cycloidal gear reducer with small tooth difference according to an embodiment of the present invention.

Fig. 5 is a cross-sectional view of a cycloidal gear reducer with small tooth 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 small tooth difference cycloid gear reducer 1, the housing 11, the cycloid gear 111, the first through hole 112, the limit step 113, the second protruding portion 114, 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 cycloid gear 13, the pin shaft 131, the output shaft 14, the chassis 141, the pin hole 142, the notch 143, the boss 144, the second connecting hole 145, the third connecting hole 146, the holder 15, the second through hole 151, the support frame 2, the first channel 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 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 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 the embodiment of the utility model provides a first stereogram of a lift camera module of using few poor cycloid gear reduction unit of tooth, fig. 2 is the utility model provides a second stereogram of a lift camera module of using few poor cycloid gear reduction unit of tooth, fig. 3 is the utility model provides a poor cycloid gear reduction unit of little poor cycloid gear reduction unit's of tooth exploded view, fig. 4 is the utility model provides a poor cycloid gear reduction unit of little poor cycloid gear reduction unit of tooth's stereogram, fig. 5 is the utility model provides a little poor cycloid gear reduction unit of tooth's cross-sectional view, fig. 6 is the utility model provides a housing's stereogram.

Example (b):

as shown in fig. 1 to 6, a lifting camera module using a small tooth difference cycloid gear speed reducer comprises a support frame 2, wherein the support frame 2 is provided with 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 cycloid gear speed reducer 1, and the motor 3 is connected with the lifting assembly 5 through the small tooth difference cycloid gear speed reducer 1. The small-tooth-difference cycloid gear speed reducer 1 comprises an eccentric shaft 12 connected with a motor 3, at least one cycloid gear 13 arranged on the eccentric shaft 12 and a cycloid gear ring 111 matched with the cycloid gear 13, the cycloid gear 13 is connected with the lifting assembly 5 through an output shaft 14, the motor 3 can drive the lifting assembly 5 to move through the small-tooth-difference cycloid gear speed reducer 1 so as to enable the camera module 4 to lift, the lifting of the camera module 4 is the extension of the camera module 4, and the descending of the camera module 4 is the retraction or the hiding of the camera module 4. Compared with involute gear transmission, the cycloid gear 13 is matched with the cycloid gear ring 111, the contact ratio is larger, the transmission is more stable, the abrasion is small and uniform, and the lubrication is good.

In the using process, the cycloid gear 13 is used as a planet gear, the cycloid gear 13 and the cycloid gear ring 111 have a certain tooth number difference, the motor 3 drives the eccentric shaft 12 of the cycloid gear reducer 1 with less tooth number difference to rotate, the eccentric shaft 12 drives the cycloid gear 13 to perform circular motion and enables the cycloid gear 13 and the cycloid gear ring 111 to perform reduction transmission in a matched mode, namely the cycloid gear 13 performs composite motion of rotation and revolution, and meanwhile the cycloid gear 13 converts the composite motion into stable fixed-axis rotation through the output shaft 14 to output so as to enable the lifting assembly 5 to move, and therefore the camera module 4 is controlled to perform lifting motion. Compared with the prior art, the utility model discloses a poor cycloid gear reducer 1 of few tooth, the output torque of motor 3 has been improved, be convenient for adjust the lifting speed of 5's motion with better control camera module 4 of lifting unit, poor cycloid gear reducer 1 of few tooth passes through eccentric shaft 12, cycloid gear 13, cycloid ring gear 111 and output shaft 14 carry out the poor planetary drive 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, the operation is steady, 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 small tooth difference cycloid gear speed reducer 1 further comprises a shell 11, a cycloid gear ring 111 is arranged in the shell 11, an eccentric shaft 12, a cycloid 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 cycloid gear ring 111 and the shell 11 are generally 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 114, which is matched with the output shaft 14, so that the stability of the output shaft 14 is improved through the second protruding portion 114, and the safety and reliability are improved. The housing 11 and the cycloid gear 13 may be made of metal material, engineering plastic, plastic alloy or other suitable materials, such as nylon, Polyoxymethylene (POM) and other engineering plastics, and have the advantages of simple structure, convenient production and processing, long service life and reduced production cost.

One end of the housing 11 close to the motor 3 is provided with a retainer 15 matched with the cycloid 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 cycloid gear 13 and the output shaft 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 cycloid gear 13, so that the cycloid gear 13 and the output shaft 14 are limited in the shell 11, the situation that the cycloid gear 13 and the output shaft 14 move too much in the shell 11 to break up the assembling relation is prevented, and the eccentric shaft 12 is conveniently connected with the cycloid 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, far away from the cycloid gear 13, of the retainer 15 is further provided with a flange, a first groove body matched with the flange is arranged in the shell 11, the retainer 15 is plugged into an inlet of the shell 11, and the flange is tightly pressed in the first groove body, 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 cycloid gear 13 matched with spacing step 113, spacing step 113 is located cycloid ring 111 and keeps away from the one end of holder 15, cycloid gear 13 and cycloid ring 111 are located between holder 15 and spacing step 113, in the use, can make cycloid gear 13 more stable in the casing through holder 15 and spacing step 113, guarantee that cycloid gear 13 moves better to the reliability of product has been improved.

A plurality of pin shafts 131 are uniformly distributed on one end of the cycloid gear 13 far away from the motor 3 along the circumferential direction, one end of the output shaft 14 near the cycloid gear 13 is provided with a chassis 141, 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, the chassis 141 is provided with a plurality of pin holes 142 correspondingly matched with the pin shafts 131 along the circumferential direction of the output shaft 14, the pin holes 142 are in one-to-one correspondence with the pin shafts 131, thus, the cycloidal gear 13 and the output shaft 14 can be ensured to have high structural strength and convenient processing, and are particularly suitable for smaller cycloidal gears 13 and chassis 141, the number of the pin holes 142 and the pin shafts 131 is determined according to specific conditions, the center distance between the cycloidal gear ring 111 and the cycloidal gear 13 is equal to the radius difference between the pin holes 142 and the pin shafts 131, thereby enabling the compound motion of the rotation and revolution of the cycloid gear 13 to be converted into stable fixed-axis rotation for output. 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 shaft hole diameter of the cycloid gear 13, the cycloid gear 13 is sleeved on the eccentric portion 122, and one end of the cycloid gear 13 can be abutted against the first connecting portion 121 to be pressed together, so that the assembling precision of the eccentric shaft 12 and the cycloid 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 cycloid 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 end of the eccentric portion 122 away from the first connecting portion 121 may be further provided with a second connecting portion 123, and the chassis 141 of the output shaft 14 is provided with a second connecting hole 145 matched with the second connecting portion 123. When the motor 3 drives the eccentric shaft 12 to make a circular motion in use, the second connecting part 123 is arranged at

The second connecting hole 145 is internally provided with a fixed shaft for rotation, so that the second connecting part 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 having higher stability and reliability. Generally, the diameter of the first connecting portion 121 is larger than that of the shaft hole of the cycloid gear 13, and the diameter of the second connecting portion 123 is smaller than that of the eccentric portion 122, which facilitates assembly. Further, one end of the chassis 141 close to the cycloid gear 13 is further provided with a boss 144 matched with the cycloid gear 13, the boss 144 is located in an interval defined by all the pin holes 142, and the second connecting hole 145 is formed in the boss 144, so that the eccentric shaft 12 and the output shaft 14 can be better matched, and the eccentric shaft is more stable and reliable.

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, a spring is adopted to elastically connect the moving block 53 with the first protruding portion 41, friction columns and friction holes are adopted to frictionally connect the moving block 53 with the first protruding portion 41, a magnetic force absorption connection or other suitable manners are adopted to detachably connect the moving block 53 with the first protruding portion 41, the first protruding portion 41 is slidably connected with the guide mechanism 52, and the output shaft 14 of the small tooth difference cycloid gear 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 cycloidal gear speed 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 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. A lifting camera module applying a cycloidal gear reducer with small tooth difference is characterized by comprising a support frame (2), the supporting 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 cycloid gear reducer (1), the small tooth difference cycloid gear reducer (1) comprises an eccentric shaft (12) connected with the motor (3), at least one cycloid gear (13) arranged on the eccentric shaft (12) and a cycloid gear ring (111) matched with the cycloid gear (13), the cycloid gear (13) is connected with the lifting component (5) through an output shaft (14), the motor (3) can drive the lifting assembly (5) to move through the small-tooth-difference cycloid gear reducer (1) so as to enable the camera module (4) to lift.

2. The lift camera module of claim 1, wherein the eccentric shaft (12) comprises a first connecting portion (121) and an eccentric portion (122) in sequence, the first connecting portion (121) is coaxially connected with a driving shaft of the motor (3), and the cycloid gear (13) is disposed on the eccentric portion (122).

3. The lifting camera module with the small teeth difference cycloid gear reducer as claimed in claim 2, wherein the eccentric part (122) is provided with a second connecting part (123) at an end far away from the first connecting part (121), and the output shaft (14) is provided with a second connecting hole (145) matched with the second connecting part (123).

4. The lifting camera module applying the small tooth difference cycloid gear reducer as recited in claim 1, characterized in that the small tooth difference cycloid gear reducer (1) further comprises a housing (11), the cycloid gear (111) is arranged in the housing (11), the eccentric shaft (12), the cycloid gear (13) and the output shaft (14) are positioned in the housing (11), and one end of the housing (11) far away from the motor (3) is provided with a first through hole (112) correspondingly matched with the output shaft (14).

5. The lifting camera module using the cycloidal gear reducer with small tooth difference as claimed in claim 4, wherein a retainer (15) matched with the cycloidal 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 arranged on the retainer (15).

6. The lifting camera module applying the small tooth difference cycloid gear speed reducer as claimed in claim 4, wherein a plurality of pin shafts (131) are uniformly distributed at one end of the cycloid gear (13) far away from the motor (3) along the circumferential direction, a chassis (141) is arranged at one end of the output shaft (14) close to the cycloid gear (13), 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 arranged on the chassis (141) along the circumferential direction of the output shaft (14), and the center distance between the gear ring (111) and the cycloid gear (13) is equal to the radius difference between the pin holes (142) and the pin shafts (131).

7. The lifting camera module applying the small teeth difference cycloid gear reducer as recited in any one of claims 1 to 6, wherein the lifting assembly (5) comprises a lead screw mechanism (51), a moving block (53) arranged on the lead screw mechanism (51), and a guiding mechanism (52) matched with the moving block (53), the camera module (4) is provided with a first protruding part (41) connected with the moving block (53), the first protruding part (41) is connected with the guiding mechanism (52) in a sliding manner, and the output shaft (14) is connected with the lead screw mechanism (51).

8. The lift camera module of claim 7, wherein the moving block (53) is detachably connected to the first protrusion (41).

9. The lifting camera module with the small teeth difference cycloid gear reducer as claimed in claim 8, wherein the moving block (53) is provided with a permanent magnet (54) which is magnetically connected with the first protruding part (41).

10. The lifting camera module using the small teeth difference cycloid gear speed reducer as recited in claim 8, wherein the lower end of the guiding mechanism (52) is provided with an elastic element (55) for being matched with the first protruding part (41) after being separated from the moving block (53), and the moving block (53) is provided with a buffer plate (56) matched with the first protruding part (41).

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