CN109973473B

CN109973473B - Shaft assembly, telescopic mechanism and electronic device

Info

Publication number: CN109973473B
Application number: CN201910267348.XA
Authority: CN
Inventors: 黄富勇
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-04-03
Filing date: 2019-04-03
Publication date: 2021-03-05
Anticipated expiration: 2039-04-03
Also published as: CN109973473A

Abstract

The application discloses axle subassembly, this axle subassembly includes: a shaft body; the elastic sleeve is sleeved on the shaft body; and the retraction driving mechanism is connected with the elastic sleeve and is used for applying a first driving force to the elastic sleeve after the shaft body axially moves relative to the elastic sleeve so as to reduce the gap between the elastic sleeve and the shaft body. In this way, this application can not influence under the circumstances of axis body axial displacement, can promote the water-proof effects to the axis body.

Description

Shaft assembly, telescopic mechanism and electronic device

Technical Field

The present invention relates to the field of electronic devices, and in particular, to a shaft assembly, a telescopic mechanism, and an electronic apparatus.

Background

The telescopic shaft all has extensive application in each field, and traditional telescopic shaft waterproof performance is poor, leads to the telescopic shaft to intake easily and leads to the telescopic shaft to damage to the telescopic shaft takes place to interfere easily, especially in electronic device such as cell-phone, when applying the telescopic shaft, and is higher to the waterproof requirement of telescopic shaft, and traditional axle subassembly can not reach waterproof requirement, and the telescopic shaft damages when leading to equipment to intake.

Disclosure of Invention

The embodiment of the application adopts a technical scheme that: providing a shaft assembly comprising: a shaft body; the elastic sleeve is sleeved on the shaft body; and the retraction driving mechanism is connected with the elastic sleeve and is used for applying a first driving force to the elastic sleeve after the shaft body axially moves relative to the elastic sleeve so as to reduce the gap between the elastic sleeve and the shaft body.

Another technical scheme adopted by the embodiment of the application is as follows: provided is a telescopic mechanism of an electronic device, including: a shaft body; the elastic sleeve is sleeved on the shaft body; the telescopic driving mechanism is connected with the shaft body and is used for driving the shaft body to axially move relative to the elastic sleeve so as to drive the object to move; the retraction driving mechanism is connected with the elastic sleeve and is electrically connected with the telescopic driving mechanism; the telescopic driving mechanism sends a first driving signal to the retractable driving mechanism after the driving shaft body axially moves relative to the elastic sleeve, and the retractable driving mechanism applies a first driving force to the elastic sleeve according to the received first driving signal so as to reduce a gap between the elastic sleeve and the shaft body.

This application includes through setting up axle subassembly: a shaft body; the elastic sleeve is sleeved on the shaft body; receive and release actuating mechanism, be connected with elastic sleeve, be used for applying first drive power to elastic sleeve after the axis body is accomplished for elastic sleeve axial displacement, so that the clearance between elastic sleeve and the axis body diminishes, can make axle and elastic sleeve keep the flexible of the relatively great clearance of the axle of being convenient for when the axle subassembly is flexible for elastic sleeve axial, after the axle subassembly is accomplished for elastic sleeve is flexible, when keeping relatively static with elastic sleeve promptly, make axle and elastic sleeve keep the relatively less clearance and can promote waterproof sealing effect.

Drawings

FIG. 1 is a cross-sectional structural schematic view of a shaft assembly of an embodiment of the present application after the clearance has been enlarged;

FIG. 2 is a cross-sectional structural schematic view of a shaft assembly of an embodiment of the present application after clearance reduction;

FIG. 3 is a schematic structural view of a second embodiment of the retraction drive mechanism of the present application;

FIG. 4 is a schematic structural view of a third embodiment of the retraction drive mechanism of the present application;

FIG. 5 is a schematic structural view of a fourth embodiment of the retraction drive mechanism of the present application;

FIG. 6 is a schematic structural diagram of a fifth embodiment of a retraction drive mechanism according to the present application;

FIG. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

fig. 8 is a schematic diagram of an electrical connection principle of the telescopic mechanism according to the embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1 and fig. 2 in combination, fig. 1 is a schematic cross-sectional structural view of a shaft assembly according to an embodiment of the present application after a gap is enlarged. FIG. 2 is a cross-sectional structural schematic view of a shaft assembly of an embodiment of the present application after the clearance is reduced.

In this embodiment, the shaft assembly includes a shaft body 11, an elastic sleeve 12, a seal layer 13, and a retraction drive mechanism 14.

The shaft body 11 may be square in cross-section with a chamfer, such as a radius or a chamfer, at the edges. The cross section of the shaft body 11 may also be circular, which is not limited in the embodiments of the present application.

The elastic sleeve 12 is sleeved on the shaft 11. The elastic sleeve 12 may be formed by bending a metal elastic sheet. The elastic sleeve 12 includes a sleeve portion 121 and a driving force acting portion 122, a notch q is axially formed in an outer wall of the sleeve portion 121, the notch q is axially formed along the sleeve portion 121, that is, along a direction parallel to an axial line of the shaft body 11, and the driving force acting portion 122 is connected to the sleeve portion 121.

Alternatively, the number of the driving force acting portions 122 is two and located on both sides of the notch q, respectively. The driving force acting portion 122 is connected to an edge of the sleeve portion 121 near the notch q. The driving force acting portion 122 and the sleeve portion 121 may be formed by bending the same metal spring, that is, the driving force acting portion 122 and the sleeve portion 121 are integrally formed. The two driving force acting portions 122 may be disposed in parallel.

The sealing layer 13 is disposed on the inner wall of the elastic sleeve 12. Specifically, the seal layer 12 is provided on the inner wall of the sleeve portion 121 of the elastic sleeve 12. The sealing layer 12 completely covers the inner wall of the sleeve portion 121. The seal layer 12 is located between the shaft body 11 and the sleeve portion 121 of the elastic sleeve 12. The material of the sealing layer 12 may be an elastic material. For example, the material of the sealing layer 12 is silicon gel. The sealing layer 12 may be adhered to the inner wall of the elastic sleeve 12 by glue or may be fixed to the inner wall of the elastic sleeve 12 by injection molding. The seal layer 13 is also sleeve-shaped, and a notch provided in a direction parallel to the axial direction of the shaft body 11 is also formed in the outer wall of the seal layer 13, the notch corresponding to the positional notch in the sleeve portion 121. The sealing layer 13 is provided at the edge of its notch with at least one protrusion t, which has a cross-sectional dimension gradually decreasing towards the notch, for example, the protrusion t has a shape of a cone, a sawtooth, etc. So that the sealing effect of the sealing layer 13 against the shaft body 11 can be improved.

The retraction drive mechanism 14 is connected to the flexible sleeve 12. Specifically, the accommodating drive mechanism 14 is connected to the drive force acting portion 122 of the elastic sleeve 12. The retractable driving mechanism 14 is used for applying a first driving force to the elastic sleeve 12 after the axial movement of the shaft body 11 relative to the elastic sleeve 12 is completed, so that a gap between the elastic sleeve 12 and the shaft body 11 is reduced, and under the condition that the gap is reduced, the sealing layer 13 is tightly attached to the shaft body 11, so that the sealing effect is improved, and water, steam or other impurities are prevented from entering the shaft body 11 to corrode the shaft body 11 or interfere with the axial movement of the shaft body 11 relative to the elastic sleeve 12.

It should be understood that the retraction driving mechanism 14 may be connected to the sleeve portion 121 of the elastic sleeve 12, and directly apply a driving force to the sleeve portion 121, so as to drive the gap between the elastic sleeve 12 and the shaft body 11 to change.

The retraction driving mechanism 14 is configured to apply a second driving force to the elastic sleeve 12 when or before the shaft body 11 moves axially relative to the elastic sleeve 12, so as to increase a gap between the elastic sleeve 12 and the shaft body 11; alternatively, the retraction drive mechanism 14 is configured to release the first drive force applied to the elastic sleeve 12 when or before the shaft body 11 moves axially relative to the elastic sleeve 12, so that the elastic sleeve 12 rebounds by its own elastic force, and the gap between the elastic sleeve 12 and the shaft body 11 is increased. The gap between the elastic sleeve 12 and the shaft body 11 becomes large, and a sufficient gap can be left for the axial movement of the shaft body 11 without interfering with the axial movement of the shaft body 11.

The retraction drive mechanism 14 is used to drive the two drive force acting portions 122 toward or away from each other so that the gap between the elastic sleeve 12 and the shaft body 11 becomes smaller or larger. For example, when the storage drive mechanism 14 drives the two drive force acting portions 122 to approach each other, the size of the notch q is reduced, and the gap between the elastic sleeve 12 and the shaft body 11 is reduced. For another example, when the storage drive mechanism 14 drives the two drive force acting portions 122 to move away from each other, the size of the notch q increases, and the gap between the elastic sleeve 12 and the shaft body 11 increases.

Specifically, the retractable drive mechanism 14 can be implemented in a variety of ways, including but not limited to the following.

In a first embodiment, as shown in FIG. 1, the retraction drive mechanism 14 may include a first controllable magnetic element 141 and a second controllable magnetic element 142. The first controllable magnetic member 141 and the second controllable magnetic member 142 are fixedly connected to the two driving force acting portions 122, respectively. When the distance between the elastic sleeve 12 and the shaft body 11 needs to be reduced, the polarities of the first controllable magnetic element 141 and the second controllable magnetic element 142 are controlled, so that the polarities of the ends, close to each other, of the first controllable magnetic element 141 and the second controllable magnetic element 142 are opposite, and the first controllable magnetic element 141 and the second controllable magnetic element 142 are attracted to each other, so that the two driving force acting portions 122 are driven to be close to each other. When the distance between the elastic sleeve 12 and the shaft body 11 needs to be increased, the polarities of the first controllable magnetic element 141 and the second controllable magnetic element 142 are controlled, so that the polarities of the ends, close to each other, of the first controllable magnetic element 141 and the second controllable magnetic element 142 are the same, the first controllable magnetic element 141 and the second controllable magnetic element 142 repel each other, and the two driving force acting portions 122 are driven to be away from each other. Or, when the distance between the elastic sleeve 12 and the shaft body 11 needs to be increased, the first controllable magnetic element 141 and the second controllable magnetic element 142 are controlled not to generate magnetism, so that the distance between the elastic sleeve 12 and the shaft body 11 is increased by the resilience of the elastic sleeve 12.

Alternatively, the first controllable magnetic member 141 and the second controllable magnetic member 142 may be electromagnets, the polarity of the electromagnet is controlled by controlling the direction of the current applied by the electromagnet, and the controllable magnetic member is controlled to generate magnetism or not generate magnetism by being electrified or not electrified.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a second embodiment of the retracting and releasing driving mechanism of the present application. In the second embodiment, the retraction driving mechanism may include only one controllable magnetic member 151, and the controllable magnetic member 151 may be fixedly connected to one of the two driving force acting portions 122. When the distance between the elastic sleeve 12 and the shaft 11 needs to be reduced, the controllable magnetic element 151 is controlled to generate magnetism, so as to attract the other driving force acting part and drive the two driving force acting parts 122 to approach each other. When the distance between the elastic sleeve 12 and the shaft body 11 needs to be increased, the controllable magnetic part 151 is controlled to generate no magnetism, so that the elastic sleeve 12 enables the distance between the elastic sleeve 12 and the shaft body 11 to be increased by the aid of self resilience force.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a third embodiment of a retraction driving mechanism of the present application. In the third embodiment, the retraction driving mechanism may include a linear motor 16, the linear motor 16 includes a linear motor body 161 and a push rod 162, and the linear motor body 161 drives the push rod 162 to move linearly along the length direction of the push rod 162. The push rod 162 may be fixedly connected to one of the two driving force acting portions 122. And the other driving force acting portion 122 may be fixed in relative position to the linear motor main body 161. When the distance between the elastic sleeve 12 and the shaft body 11 needs to be reduced, the linear motor main body 161 is controlled to drive the push rod 162 to push one driving force acting part 122 to approach the other driving force acting part 122. When the distance between the elastic sleeve 12 and the shaft body 11 is required, the linear motor main body 161 is controlled to drive the push rod 162 to pull one driving force acting part away from 122 and the other driving force acting part 122.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a fourth embodiment of a retraction driving mechanism of the present application. In the fourth embodiment, the retraction driving mechanism may include two linear motors 17, each linear motor 17 includes a linear motor main body 171 and a push rod 172, and the linear motor main body 171 drives the push rod 172 to move linearly along the length direction of the push rod 172. The push rods 172 of the two linear motors 17 are connected to the two driving force acting portions 122, respectively. When the distance between the elastic sleeve 12 and the shaft body 11 needs to be reduced, the driving push rods 172 of the linear motor main bodies 171 are controlled to respectively push the two driving force acting portions 122 to approach each other. When it is necessary to increase the distance between the elastic sleeve 12 and the shaft body 11, the respective linear motor main bodies 171 are controlled to drive the push rods to respectively pull the two driving force acting portions 122 away from each other.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a fifth embodiment of a retraction driving mechanism of the present application. In a fifth embodiment, the retraction driving mechanism may include lead screw motors 18, each lead screw motor 18 includes a lead screw motor main body 181 and a threaded rod 182, and the lead screw motor main body 181 is used for driving the threaded rod 182 to rotate. The threaded rod 182 includes a first threaded section and a second threaded section which are arranged at intervals, the two driving force acting portions 122 are respectively a first driving force acting portion 122(a) and a second driving force acting portion 122(b), the first threaded section is in threaded connection with a threaded hole in the first driving force acting portion 122(a), and the second threaded section is in threaded connection with a threaded hole in the second driving force acting portion 122 (b). When the distance between the elastic sleeve 12 and the shaft body 11 needs to be reduced, the lead screw motor main body 181 is controlled to drive the threaded rod 182 to rotate in the first rotation direction, so that the first driving force acting part 122(a) and the second driving force acting part 122(b) are close to each other under the action of the pushing force of the threads; when it is necessary to increase the distance between the elastic sleeve 12 and the shaft body 11, the screw motor main body 181 drives the threaded rod 182 to rotate in the second rotational direction, so that the first driving force acting portion 122(a) and the second driving force acting portion 122(b) are moved away from each other by the screw thrust. One of the first rotation direction and the second rotation direction is clockwise, and the other one is counterclockwise.

The telescopic mechanism of the electronic device of the embodiment of the application comprises the shaft assembly of any one of the embodiments. The shaft assembly described above is not limited to the case of application to electronic devices.

Referring to fig. 7 and 8, fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the disclosure. Fig. 8 is a schematic diagram of an electrical connection principle of the telescopic mechanism according to the embodiment of the present application. The electronic device of the embodiment of the present application includes a housing 91 and a telescopic mechanism 92.

The telescopic mechanism 92 is disposed in the casing 91 and can extend out of the casing 91. The telescopic mechanism 92 includes a shaft assembly 921 and a telescopic drive mechanism 92. The shaft assembly 921 may be the shaft assembly of any of the embodiments described above.

The telescopic driving mechanism 92 is connected to the shaft 11, and the telescopic driving mechanism 92 is configured to drive the shaft 11 to move axially relative to the elastic sleeve 12, so as to drive the object to move. The object may be a camera 93 of the electronic device. The driving camera 93 is exposed to the outside of the housing 91 of the electronic device or hidden in the housing 91 of the electronic device when the shaft body 11 moves axially relative to the elastic sleeve 12.

The retraction drive mechanism 14 is electrically connected to the extension drive mechanism 92.

The telescopic driving mechanism 92 sends a first driving signal to the retraction driving mechanism 14 after the driving shaft body 11 completes the axial movement relative to the elastic sleeve 12, and the retraction driving mechanism 14 applies a first driving force to the elastic sleeve 12 according to the received first driving signal, so that the gap between the elastic sleeve 12 and the shaft body 11 is reduced.

The telescopic driving mechanism 92 sends a second driving signal to the retraction driving mechanism 14 when or before the shaft body 11 is driven to move axially relative to the elastic sleeve 12, and the retraction driving mechanism 14 applies a second driving force to the elastic sleeve 12 according to the received second driving signal so as to increase the gap between the elastic sleeve 12 and the shaft body 11; alternatively, the telescopic driving mechanism 92 transmits a third driving signal to the retraction driving mechanism 14 when or before the driving shaft body 11 moves axially relative to the elastic sleeve 12, and the retraction driving mechanism 14 releases the first driving force applied to the elastic sleeve 12 according to the received third driving signal, so that the elastic sleeve 12 rebounds by its own elasticity, and the gap between the elastic sleeve 12 and the shaft body 11 is increased.

In this embodiment, the electronic device may be a communication terminal, as used herein a "communication terminal" (or simply "terminal") includes, but is not limited to, a device configured to receive/transmit communication signals via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal). A communication terminal arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. The mobile phone is a mobile terminal equipped with a cellular communication module.

Optionally, the electronic device in this application may be a foldable smartphone, a tablet computer, a laptop computer, a smart wearable device (e.g., a smart watch, a smart wristband, etc.), a smart wearable medical device (e.g., a smart sphygmomanometer), etc.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. A telescoping mechanism for an electronic device, the telescoping mechanism comprising:

a shaft body;

the elastic sleeve is sleeved on the shaft body;

the telescopic driving mechanism is connected with the shaft body and is used for driving the shaft body to axially move relative to the elastic sleeve so as to drive the object to move;

the retraction driving mechanism is connected with the elastic sleeve and is electrically connected with the telescopic driving mechanism;

the sealing layer is arranged on the inner wall of the elastic sleeve;

the telescopic driving mechanism sends a first driving signal to the retractable driving mechanism after driving the shaft body to axially move relative to the elastic sleeve, and the retractable driving mechanism applies a first driving force to the elastic sleeve according to the received first driving signal so as to reduce a gap between the elastic sleeve and the shaft body.

2. The retracting mechanism according to claim 1, wherein the retracting drive mechanism sends a second drive signal to the retracting drive mechanism when or before driving the shaft to move axially relative to the elastic sleeve, and the retracting drive mechanism applies a second drive force to the elastic sleeve according to the received second drive signal, so that a gap between the elastic sleeve and the shaft is increased.

3. The retracting mechanism according to claim 1, wherein the retracting driving mechanism sends a third driving signal to the retracting driving mechanism when or before driving the shaft body to move axially relative to the elastic sleeve, and the retracting driving mechanism releases the first driving force applied to the elastic sleeve according to the received third driving signal, so that the elastic sleeve rebounds by means of self elasticity, and a gap between the elastic sleeve and the shaft body is enlarged.

4. The telescopic mechanism according to claim 1, wherein the elastic sleeve includes a sleeve portion having a notch provided on an outer wall thereof in an axial direction and a driving force acting portion connected to the sleeve portion.

5. The retracting mechanism according to claim 4, wherein the number of the driving force applying portions is two and is located on both sides of the notch.

6. The retracting mechanism according to claim 4, wherein the driving force application portion is connected to an edge of the sleeve portion near the notch.

7. The retracting mechanism according to claim 5, wherein the retracting drive mechanism is configured to drive the two driving force acting portions to approach or separate from each other so that a gap between the elastic sleeve and the shaft body becomes smaller or larger.

8. The telescoping mechanism of claim 2 or 3, wherein the object is a camera of an electronic device, and the shaft moves axially relative to the elastic sleeve to drive the camera to be exposed or hidden from the electronic device.

9. An electronic device, characterized in that the electronic device comprises a telescopic mechanism according to any one of claims 1-8.