Mobile phone camera extension-and-retraction device and mobile phone

A mobile phone camera extension-and-retraction device (100) and a mobile phone, wherein, the mobile phone camera extension-and-retraction device (100) comprises a driving unit (1), a reversing gear mechanism (2), a connecting drive mechanism (3), a control module and a shell (4), the driving unit (1) is controlled to rotate forwardly or reversely by the control module, thereby driving the first planetary pinion (22) or the second planetary pinion (23) of the reversing gear mechanism (2) to mesh with the second drive gear (31) of the connecting drive mechanism (3), and driving the rack member (32) for straightly reciprocating movement, such that the mobile phone camera fixedly connected to the rack member (32) extends or retracts automatically.

TECHNICAL FIELD

The present application pertains to the field of electronic devices, more particularly, relates to a mobile phone camera extension-and-retraction device and a mobile phone.

BACKGROUND

Photographing function has become a hot direction in the development of mobile phones, on one hand, the mobile phones are thinner and the screen occupation ratio is continuously improved, leaving the width and thickness of the space of the mobile phone camera gradually reduced; on the other hand, the size of the mobile phone camera makes it impossible to continue to shrink with the enhancement of photographing and video functions. Especially the emergence of full-screen mobile phones, which have no width space to install the mobile phone camera and need to hide the mobile phone camera on the back of the screen module, when the photographing function is needed, the mobile phone camera will extend and can take photos after the camera is beyond screen blocking section, and when not needed, the mobile phone camera will return back. Existing mobile phone camera extension-and-retraction devices mainly adopt the manner of manual driving, which cannot achieve extending and retracting automatically.

Technical Problems

Embodiments of the present disclosure aim at: first aspect, providing a mobile phone camera extension-and-retraction device and a mobile phone to solve the technical problem existing in the prior art that the mobile phone camera cannot extend and retract automatically.

Second aspect, providing a mobile phone to solve the technical problem existing in the prior art that the mobile phone camera cannot extend and retract automatically when the mobile phone is photographing.

Technical Solutions

In order to solve above technical problems, the technical solutions adopted by embodiments of the present disclosure are as follows:

First aspect, a mobile phone camera extension-and-retraction device is provided, and the mobile phone camera extension-and-retraction device comprises a driving unit, a reversing gear mechanism, a connecting drive mechanism for driving the mobile phone camera to extend or retract, a control module and a shell;

the driving unit, the reversing gear mechanism, the connecting drive mechanism and the control module are all arranged in the shell, and the control module is electrically connected with the driving unit and may control the driving unit to rotate forwardly or reversely;

the reversing gear mechanism comprises a first drive gear, a first planetary pinion, a second planetary pinion and a planet carrier that are pivotally rotated on the shell, the first drive gear comprises a primary gear and an auxiliary gear, the primary gear is driven to rotate by the driving unit, the auxiliary gear is arranged on the primary gear and rotates coaxially with the primary gear, the planet carrier is pivotally connected to the auxiliary gear through a rotational shaft, the first planetary pinion is pivotally connected to the planet carrier and meshes with the auxiliary gear, the second planetary pinion is pivotally connected to the planet carrier and meshes with the auxiliary gear;

the connecting drive mechanism comprises a second drive gear meshing with the first planetary pinion or the second planetary pinion, and a rack member for fixing the mobile phone camera, the second drive gear is pivotally rotated in the shell, the rack member is movably connected in the shell and extends or retracts relative to the shell when it meshes with the second drive gear, and the first planetary pinion engages with the second drive gear and meshes to drive such that the rack member extends relative to the shell when the driving unit drives the primary gear forwardly, the second planetary pinion engages with the second drive gear and meshes to drive such that the rack member retracts relative to the shell when the driving unit drives the primary gear reversely.

Second aspect, a mobile phone is provided, and the mobile phone comprises the above mobile phone camera extension-and-retraction device.

Beneficial Effects

Compared with the prior art, the beneficial effects of the mobile phone camera extension-and-retraction device, provided in embodiments of the present application, lie in that: the mobile phone camera extension-and-retraction device controls an electric motor to drive the gear transmission mechanism through the control module, adopts two planetary pinions to clockwise, counterclockwise output the driving forces respectively, and finally adopts the rack to drive the mobile phone camera move in a straight line, achieving the purposes that the mobile phone camera extension-and-retraction device extends and retracts automatically, and that the extending and retracting rates are uniform.

The beneficial effects of the mobile phone, provided in embodiments of the present application, lie in that: through the mobile phone adopting the above mobile phone camera extension-and-retraction device, the camera therefore achieves automatic extension and retraction, enhancing the photographing and video functions of the mobile phone, and making the photographing function of the mobile phone more practical.

Wherein, the reference signs in the drawings are as follows:

DETAILED DESCRIPTION OF THE EMBODIMENTS

In order to make the technical problems to be solved, the technical solutions and the technical effects of the present application more clearly, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are merely for illustrative of the invention, and are not intended to limit the invention.

It should be noted that when an element is referred to as “fixed to” or “arranged to” another element, it may be directly on another element or indirectly on the said another element. When an element is referred to as “connected to” another element, it may be directly connected to another element or indirectly connected to said another element.

It should be appreciated that the terms, such as “above”, “below”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside” and the like indicating orientation and position relationships based on the orientation and position relationships shown in the drawings, are merely for conveniently describing the invention and simplifying the description, and are not indicated or suggested that the referring device or element must have specific orientations, and be configured and operated in specific orientations, therefore it cannot be understood as limiting of the invention.

Otherwise, the terms “first”, “second” are merely for illustrative purpose, and cannot be understood as indicating or suggesting relative importance, or impliedly pointing out the quantities of the referring technical features. Therefore, the feature limited with “first”, “second” may clearly or impliedly comprise one or more said feature. In description of the present application, the meaning of “a plurality of” is two or more, unless there are other clear and specific limitations.

Please refer toFIG. 1andFIG. 2together, the mobile phone camera extension-and-retraction device100provided in an embodiment of the present application is now illustrated. The mobile phone camera extension-and-retraction device100comprises a driving unit1, a reversing gear mechanism2, a connecting drive mechanism3for driving the mobile phone camera to extend or retract, a control module and a shell4, the driving unit1, the reversing gear mechanism2, the connecting drive mechanism3and the control module are all arranged in the shell4, and the control module is electrically connected with the driving unit1and may control the driving unit1to rotate forwardly or reversely; the reversing gear mechanism2comprises a first drive gear21, a first planetary pinion22, a second planetary pinion23and a planet carrier24that are pivotally rotated on the shell4, the first drive gear21comprises a primary gear211and an auxiliary gear212, the primary gear211is driven to rotate by the driving unit1, the auxiliary gear212is arranged on the primary gear211and rotates coaxially with the primary gear, the planet carrier24is pivotally connected to the auxiliary gear212through a rotational shaft, the first planetary pinion22is pivotally connected to the planet carrier24and meshes with the auxiliary gear212, the second planetary pinion23is pivotally connected to the planet carrier24and meshes with the auxiliary gear212; the connecting drive mechanism3comprises a second drive gear31meshing with the first planetary pinion22or the second planetary pinion23, and a rack member32for fixing the mobile phone camera, the second drive gear31is pivotally rotated in the shell4, the rack member32is movably connected in the shell4and extends or retracts relative to the shell4when it meshes with the second drive gear31, and the first planetary pinion22engages with the second drive gear31and meshes to drive such that the rack member32extends relative to the shell4when the driving unit1drives the primary gear211forwardly, the second planetary pinion23engages with the second drive gear31and meshes to drive such that the rack member32retracts relative to the shell4when the driving unit1drives the primary gear211reversely.

When the mobile phone camera extension-and-retraction device100, provided in the embodiment of the application, controls the driving unit1rotating forwardly through the control module, the driving unit1drives the primary gear211to rotate forwardly, and then the first planetary pinion22meshes and rotates with the auxiliary gear212rotating axially with the primary gear211, at this moment, the first planetary pinion22rotates about the central axis of the auxiliary gear212until contacts with the second drive gear31, The first planetary pinion22meshes with the second drive gear31, such that the second drive gear31rotates circumferentially about the central axis thereof relative to the shell4and meshes with the rack member32, and the rack member32moves up straightly relative to the shell to make the mobile phone camera fixed connected to the rack member32extend, when the control module controls the driving unit1rotating reversely, the driving unit1drives the primary gear211to rotate reversely, and then the second planetary pinion23meshes and rotates with the auxiliary gear212rotating axially with the primary gear211, at this moment, the second planetary pinion23rotates about the central axis of the auxiliary gear212until contacts with the second drive gear31, the second planetary pinion23meshes with the second drive gear31, such that the second drive gear31rotates circumferentially about the central axis thereof relative to the shell4and meshes with the rack member32, and the rack member32moves down straightly relative to the shell to make the mobile phone camera fixed connected to the rack member32retract, the whole process achieves automatic control by the control module, and makes the mobile phone camera finish automatic extending out or retracting back stably and fast, which is convenient for operation and practical.

Further, please refer toFIG. 1andFIG. 2, the planet carrier24in the embodiment is triangular planet carrier, the first planetary pinion22and the second gear23pivot to two opposite angles of the triangular planet carrier respectively. When the first planetary pinion22meshes with the second drive gear31, the second planetary pinion23is detached from the auxiliary gear212, and the rack member32moves down straightly relative to the shell4at the moment. OR, when the second planetary pinion23meshes with the second drive gear31, the first planetary pinion22is detached from the auxiliary gear212, and the rack member32moves down straightly relative to the shell4at the moment. Since the diameters of the first planetary pinion22and the second planetary pinion23are larger than the gap between the auxiliary gear212and the second drive gear31, the first planetary pinion22or the second planetary pinion23occurs axial rotation only and occurs no orbital revolution when meshing with the second drive gear31, in this way, the power can be transmitted more stably and uniformly to drive the second drive gear31, such that the mobile phone camera stably extends or retracts with the rack member32.

Further, please refer toFIG. 1andFIG. 2, in the present embodiment, the reversing gear mechanism2further includes a torsional spring member25for limiting the planet carrier24such that both the first planetary pinion22and the second planetary pinion23are in non-contact state with the second drive gear31, one end of the torsional spring member25is connected to the planet carrier24, and another end of the torsional spring member25is connected to the shell4, and the torsional spring member25has tension after the planet carrier24rotates with the first planetary pinion22or the second planetary pinion23, after stopping work, the planet carrier24returns to its original position under the action of the tension of the torsional spring member25, and the first planetary pinion22or the second planetary pinion23also returns to its original position, ensuring that the first planetary pinion22and the second planetary pinion23are in a state of being separated from the second drive gear31in the non-operating state, such that the mobile phone camera may be manually pushed back to the original position when the mobile phone camera is in the state of extending out.

Further, please refer toFIG. 1andFIG. 2, in the present embodiment, the second drive gear31includes a first sub gear311and a second sub gear312arranged on the first sub gear311and rotates coaxially with the first sub gear311, the first sub gear311meshes with the first planetary22gear or meshes with the second planetary23gear, the second sub gear312meshes with the rack member32, and compared to the first sub gear311, the first planetary pinion22and the second planetary pinion23are smaller in diameter than the first sub gear311, when the first sub gear311is meshed and driven, the rotational speed of the first sub gear311is lowered, such that the speed that the rack member32drives the mobile phone camera slows down, thereby the mobile phone camera extending out or retracting back stably.

Further, please refer toFIG. 1andFIG. 2, in the present embodiment, the rack member32includes a rack body321engaged with the second sub gear312, the rack body321is provided with a fixing portion322for fixing the mobile phone camera, and the rack body321is engaged with the second sub gear312, meanwhile, the fixing portion322is fixedly coupled with the mobile phone camera to drive the mobile phone camera to extend or retract, the fixing portion322is arranged on the rack member32and is fixedly connected to the mobile phone camera, strengthening the connection strength between the rack member32and the mobile phone camera, and ensuring that the mobile phone camera successfully achieves the actions of extension or retraction.

Further, please refer toFIG. 1andFIG. 2, in the present embodiment, the connecting drive mechanism3further includes a plurality of guiding members33disposed side by side in the shell4, and each guiding member33is pivotally connected to the shell4and abuts by the rack member32, the rack member32moves linearly under the drive of the second drive gear31, the guiding members33is arranged to enable the rack member32to drive accurately the mobile phone camera to extend or retract, and to avoid friction and bumping with the shell4, moreover, the rack member32is in an elongated shape and a certain bending moment is generated during its movement, which causes a certain error when driving the mobile phone camera to extend or retract, the guiding members33provided herein also plays a supporting role to ensure accurate movement of the mobile phone camera.

Further, please refer toFIG. 1andFIG. 2, in the present embodiment, the driving unit1comprises a electric motor11, a worm12connected to the spindle of the electric motor11, and a third drive gear13meshing with the worm, the third transmission13meshes with the primary gear and the electric motor11is used as the power source, the worm12, which can achieve large torque transmission, is connected to the spindle of the electric motor11, and the transmission is smooth, the configuration is compact as well, the third drive gear13transmits power to the primary gear211, and reduces the rotation speed, such that the transmission process is more stable, and the transmission is more accurate.

Further, please refer toFIG. 1andFIG. 2, in the present embodiment, the third drive gear13comprises a first auxiliary gear131and a second auxiliary gear132arranged on the first auxiliary gear131and coaxially rotated with the first auxiliary gear131, the first auxiliary gear131meshes with the worm12, and the second auxiliary gear132meshes with the primary gear211. The gear diameter of the first auxiliary gear131is larger than the gear diameter of the second auxiliary gear132. The second auxiliary gear132is engaged with the primary gear211, and the gear diameter of the primary gear211is larger than the gear diameter of the second auxiliary gear132, such that the transmission speed of the master211is reduced, and then the subsequent transmission mechanisms are transmitted stably to enable the mobile phone camera extend or retract smoothly.

Further, please refer toFIG. 1andFIG. 2, in the present embodiment, the first auxiliary gear131is a first auxiliary gear with skew gear teeth, the helical gear has high meshing degree, high transmission efficiency and stable transmission, which can effectively reduce noise of the driving unit1and enhance practicability of the mobile phone camera extension-and-retraction device100, the second sub gear312may be selected as a spur gear, and the spur gear is convenient to install and adjust and has high installation precision, which meets the needs of accurate movement of the mobile phone camera.

An embodiment of the present application further provides a mobile phone, not shown in the drawings, and the mobile phone comprises the above mobile phone camera extension-and-retraction device100.

The mobile phone, provided in the embodiment of the present application, adopts the above mobile phone camera extension-and-retraction device100, therefore the mobile phone can achieve the functions of automatic extending and retracting of the camera, enhancing practicability of mobile phone and enabling the mobile phone more intelligent.

The above are only preferred embodiments of the present application, and not intended to limit the present application. There may be various modifications and variations of the invention for those skilled in the art. Any modifications, equivalents, and improvements, etc., made within the spirit and principle of the invention, are intended to be included within the scope of the appended claims.