CN109973473A - Shaft assembly, telescopic mechanism and electronic device - Google Patents

Abstract

The present application discloses a shaft assembly, which includes: a shaft body; an elastic sleeve, which is sleeved on the shaft body; and a retractable driving mechanism, which is connected to the elastic sleeve and is used to apply a first driving force to the elastic sleeve after the shaft body has completed axial movement relative to the elastic sleeve, so as to reduce the gap between the elastic sleeve and the shaft body. In the above manner, the present application can improve the waterproof effect of the shaft body without affecting the axial movement of the shaft body.

Description

Shaft assembly, telescopic mechanism and electronics

technical field

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

Background technique

The telescopic shaft has a wide range of applications in various fields. The traditional telescopic shaft has poor waterproof performance, which is easy to cause the telescopic shaft to enter the water and cause damage to the telescopic shaft, and the telescopic shaft is prone to interference, especially in electronic devices such as mobile phones. When the shaft is installed, the waterproof requirements of the telescopic shaft are higher, and the traditional shaft components cannot meet the waterproof requirements, resulting in damage to the telescopic shaft when the equipment enters the water.

SUMMARY OF THE INVENTION

A technical solution adopted in the embodiments of the present application is to provide a shaft assembly, the shaft assembly includes: a shaft body; an elastic sleeve sleeved on the shaft body; After the axial movement of the shaft body relative to the elastic sleeve is completed, a first driving force is applied to the elastic sleeve to reduce the gap between the elastic sleeve and the shaft body.

Another technical solution adopted in the embodiment of the present application is to provide a telescopic mechanism of an electronic device, the telescopic mechanism includes: a shaft body; an elastic sleeve sleeved on the shaft body; The drive shaft body moves axially relative to the elastic sleeve to drive the object to move; the retractable drive mechanism is connected with the elastic sleeve and is electrically connected with the telescopic drive mechanism; wherein, the telescopic drive mechanism is in the drive shaft body relative to the elastic sleeve After the axial movement of the cylinder is completed, the first drive signal is sent to the retractable drive mechanism, and the retractable drive mechanism applies a first drive force to the elastic sleeve according to the received first drive signal, so that the elastic sleeve and the shaft body are connected. The gap becomes smaller.

By setting the shaft assembly, the present application includes: a shaft body; an elastic sleeve sleeved on the shaft body; a retractable driving mechanism, connected with the elastic sleeve, for adjusting the elastic force after the axial movement of the shaft body relative to the elastic sleeve is completed. The sleeve applies the first driving force to reduce the gap between the elastic sleeve and the shaft body, so that when the shaft assembly is axially stretched relative to the elastic sleeve, the shaft and the elastic sleeve can maintain a relatively large gap, which is convenient for During the expansion and contraction of the shaft, after the shaft assembly is telescopically completed relative to the elastic sleeve, that is, when the shaft assembly is kept relatively stationary with the elastic sleeve, maintaining a relatively small gap between the shaft and the elastic sleeve can improve the waterproof sealing effect.

Description of drawings

FIG. 1 is a schematic cross-sectional structural diagram of a shaft assembly according to an embodiment of the present application after the gap is enlarged;

2 is a schematic cross-sectional structural diagram of the shaft assembly according to the embodiment of the present application after the clearance is reduced;

3 is a schematic structural diagram of the second embodiment of the retractable drive mechanism of the present application;

4 is a schematic structural diagram of a third embodiment of the retractable drive mechanism of the present application;

5 is a schematic structural diagram of a fourth embodiment of the retractable drive mechanism of the present application;

6 is a schematic structural diagram of a fifth embodiment of the retractable drive mechanism of the present application;

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 the electrical connection principle of the telescopic mechanism according to the embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all the structures related to the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work 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 present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor a separate or alternative embodiment that is mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

Please refer to FIG. 1 and FIG. 2 in combination. FIG. 1 is a schematic cross-sectional structural diagram of the shaft assembly according to the embodiment of the present application after the gap is enlarged. FIG. 2 is a schematic cross-sectional structural diagram of the shaft assembly according to the 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 sealing layer 13 and a retractable drive mechanism 14 .

The cross-section of the shaft body 11 can be square, and the edges have chamfered corners, such as rounded corners or right-angled corners. The cross section of the shaft body 11 may also be circular, which is not limited in the embodiment of the present application.

The elastic sleeve 12 is sleeved on the shaft body 11 . The elastic sleeve 12 can be formed by bending a metal dome. The elastic sleeve 12 includes a sleeve portion 121 and a driving force acting portion 122. A notch q is arranged on the outer wall of the sleeve portion 121 along the axial direction, and the notch q is arranged along the axial direction of the sleeve portion 121, that is, along the axis parallel to the shaft body. 11 is provided in the axial direction, and the driving force acting portion 122 is connected to the sleeve portion 121 .

Optionally, the number of the driving force acting parts 122 is two, and they are located on both sides of the notch q, respectively. The driving force acting portion 122 is connected to the edge of the sleeve portion 121 close to the notch q. The driving force acting portion 122 and the sleeve portion 121 may be formed by bending the same metal dome, that is, the driving force acting portion 122 and the sleeve portion 121 are integrally formed. The two driving force acting parts 122 may be arranged in parallel.

The sealing layer 13 is arranged on the inner wall of the elastic sleeve 12 . Specifically, the sealing 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 sealing 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 silica gel. The sealing layer 12 can be glued to the inner wall of the elastic sleeve 12 or fixed to the inner wall of the elastic sleeve 12 by injection molding. The sealing layer 13 is also sleeve-shaped, and the outer wall of the sealing layer 13 is also formed with a notch parallel to the axial direction of the shaft body 11 , and the notch corresponds to the position notch on the sleeve portion 121 . The sealing layer 13 is provided with at least one protrusion t at the edge of the notch, and the cross-sectional dimension of the protrusion t becomes gradually smaller toward the direction of the notch. Therefore, the sealing effect of the sealing layer 13 on the shaft body 11 can be improved.

The retractable drive mechanism 14 is connected with the elastic sleeve 12 . Specifically, the retractable driving mechanism 14 is connected to the driving force acting portion 122 of the elastic sleeve 12 . The retractable drive mechanism 14 is used to apply 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 as to reduce the gap between the elastic sleeve 12 and the shaft body 11 , When the gap becomes smaller, the sealing layer 13 is close to the shaft body 11 to improve the sealing effect and prevent water, water vapor or other impurities from entering the shaft body 11 to cause corrosion to the shaft body 11 , or to the shaft body 11 relative to the elastic sleeve 12 . The axial movement of , produces interference.

It should be understood that the retractable driving mechanism 14 may also be connected to the sleeve portion 121 of the elastic sleeve 12, and directly apply the driving force on the sleeve portion 121, thereby driving the gap between the elastic sleeve 12 and the shaft body 11 to occur. Variety.

The retractable drive mechanism 14 is used to apply a second driving force to the elastic sleeve 12 when the shaft body 11 moves axially relative to the elastic sleeve 12 or before the axial movement, so as to make the distance between the elastic sleeve 12 and the shaft body 11 . The gap becomes larger; alternatively, the retractable drive mechanism 14 is used to release the first driving force applied to the elastic sleeve 12 when the shaft body 11 moves axially relative to the elastic sleeve 12 or before the axial movement, so that the elastic sleeve 12 rebounds by its own elastic force, thereby making the gap between the elastic sleeve 12 and the shaft body 11 larger. The gap between the elastic sleeve 12 and the shaft body 11 becomes larger, and a sufficient gap can be reserved for the axial movement of the shaft body 11 without interfering with the axial movement of the shaft body 11 .

The retractable driving mechanism 14 is used to drive the two driving force acting parts 122 to approach or move 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 retractable driving mechanism 14 drives the two driving force acting parts 122 to approach each other, the size of the notch q becomes smaller, and the gap between the elastic sleeve 12 and the shaft body 11 becomes smaller. For another example, when the retractable driving mechanism 14 drives the two driving force acting parts 122 away from each other, the size of the notch q becomes larger, and the gap between the elastic sleeve 12 and the shaft body 11 becomes larger.

Specifically, there are various implementations of the retractable and retractable drive mechanism 14 , including but not limited to the following.

In the first embodiment, as shown in FIG. 1 , the retractable driving mechanism 14 may include a first controllable magnetic member 141 and a second controllable magnetic member 142 . The first controllable magnetic member 141 and the second controllable magnetic member 142 are respectively fixedly connected to the two driving force acting parts 122 . When the distance between the elastic sleeve 12 and the shaft body 11 needs to be reduced, by controlling the polarities of the first controllable magnetic member 141 and the second controllable magnetic member 142, the first controllable magnetic member 141 and the second controllable magnetic member 141 and the second The ends of the magnetic control members 142 close to each other have opposite polarities, so that the first controllable magnetic member 141 and the second controllable magnetic member 142 attract each other, 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, by controlling the polarities of the first controllable magnetic member 141 and the second controllable magnetic member 142, the first controllable magnetic member 141 and the second controllable magnetic member 141 can be The ends of the magnetic control members 142 close to each other have the same polarity, so that the first controllable magnetic member 141 and the second controllable magnetic member 142 repel each other, and drive the two driving force acting parts 122 away from each other. Alternatively, when the distance between the elastic sleeve 12 and the shaft body 11 needs to be increased, the first controllable magnetic member 141 and the second controllable magnetic member 142 are controlled not to generate magnetism, so that the elastic sleeve 12 relies on its own return The elastic force increases the distance between the elastic sleeve 12 and the shaft body 11 .

Optionally, both the first controllable magnetic member 141 and the second controllable magnetic member 142 may be electromagnets, and the polarity of the electromagnet is controlled by controlling the direction of the current connected to the electromagnet, and the polarity of the electromagnet is controlled by energizing or not energizing the electromagnet. , to control the controllable magnetic element to generate magnetism or not to generate magnetism.

Please refer to FIG. 3 , which is a schematic structural diagram of the second embodiment of the retractable drive mechanism of the present application. In the second embodiment, the retractable 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 parts 122 . When the distance between the elastic sleeve 12 and the shaft body 11 needs to be narrowed, the controllable magnetic element 151 is controlled to generate magnetism, attracting another driving force acting part, and driving 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 element 151 is controlled not to generate magnetism, so that the elastic sleeve 12 relies on its own resilience to make the distance between the elastic sleeve 12 and the shaft body 11 . The spacing becomes larger.

Please refer to FIG. 4 , which is a schematic structural diagram of the third embodiment of the retractable drive mechanism of the present application. In the third embodiment, the retractable drive 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 with one of the two driving force acting parts 122 . The relative position of the other driving force acting portion 122 and the linear motor main body 161 can be fixed. When the distance between the elastic sleeve 12 and the shaft body 11 needs to be reduced, the linear motor 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 body 161 is controlled to drive the push rod 162 to pull one driving force acting part 122 away from the other driving force acting part 122 .

Please refer to FIG. 5 , which is a schematic structural diagram of a fourth embodiment of the retractable drive mechanism of the present application. In the fourth embodiment, the retractable drive mechanism may include two linear motors 17 , each linear motor 17 includes a linear motor body 171 and a push rod 172 , and the linear motor body 171 drives the push rod 172 along the length of the push rod 172 direction in a straight line. The push rods 172 of the two linear motors 17 are respectively connected to the two driving force acting parts 122 correspondingly. When the distance between the elastic sleeve 12 and the shaft body 11 needs to be narrowed, each linear motor main body 171 is controlled to drive the push rod 172 to push the two driving force acting parts 122 closer to each other. When the distance between the elastic sleeve 12 and the shaft body 11 needs to be increased, each linear motor main body 171 is controlled to drive the push rod to pull the two driving force acting parts 122 away from each other.

Please refer to FIG. 6 , which is a schematic structural diagram of a fifth embodiment of the retractable drive mechanism of the present application. In the fifth embodiment, the retractable drive mechanism may include a lead screw motor 18 , each of which includes a lead screw motor body 181 and a threaded rod 182 , and the lead screw motor body 181 is used to drive the threaded rod 182 to rotate. The threaded rod 182 includes a first threaded segment and a second threaded segment arranged at intervals, and 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 threaded segment is threadedly connected to the threaded hole on the first driving force acting portion 122(a), and the second threaded segment is threadedly connected to the threaded hole on 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 main body 181 of the control screw motor drives the threaded rod 182 to rotate in the first rotation direction, so that the first driving force acting portion 122 ( a) and the second driving force acting part 122 (b) are close to each other; when the distance between the elastic sleeve 12 and the shaft body 11 needs to be increased, the screw motor body 181 drives the screw rod 182 to rotate in the second rotation direction, Therefore, the first driving force acting portion 122(a) and the second driving force acting portion 122(b) are separated from each other under the action of the thread thrust. Wherein, one of the first rotation direction and the second rotation direction is a clockwise direction, and the other is a counterclockwise direction.

The telescopic mechanism of the electronic device according to the embodiment of the present application includes the shaft assembly of any one of the above embodiments. However, the above-mentioned shaft assembly is not limited to the case where it is applied to electronic devices.

Please refer to FIG. 7 and FIG. 8 . 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 the 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 casing 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 in any of the above embodiments.

The telescopic drive mechanism 92 is connected to the shaft body 11 , and the telescopic drive mechanism 92 is used to drive the shaft body 11 to move axially relative to the elastic sleeve 12 to drive the object to move. The object may be the camera 93 of the electronic device. When the shaft body 11 moves axially relative to the elastic sleeve 12 , the driving camera 93 is exposed outside the casing 91 of the electronic device, or hidden inside the casing 91 of the electronic device.

The retractable drive mechanism 14 is electrically connected to the retractable drive mechanism 92 .

The telescopic drive mechanism 92 sends a first drive signal to the retractable drive mechanism 14 after the axial movement of the drive shaft 11 relative to the elastic sleeve 12 is completed, and the retractable drive mechanism 14 responds to the elastic sleeve 12 according to the received first drive signal. The first driving force is applied to reduce the gap between the elastic sleeve 12 and the shaft body 11 .

The telescopic drive mechanism 92 sends a second drive signal to the retractable drive mechanism 14 when the drive shaft 11 moves axially relative to the elastic sleeve 12 or before the axial movement, and the retractable drive mechanism 14 responds to the received second drive signal according to the received second drive signal. The elastic sleeve 12 applies a second driving force to increase the gap between the elastic sleeve 12 and the shaft body 11; Send a third drive signal to the retractable drive mechanism 14 before moving, and the retractable drive mechanism 14 releases the first drive force applied to the elastic sleeve 12 according to the received third drive signal, so that the elastic sleeve 12 relies on its own elastic force Rebound, thereby increasing the gap between the elastic sleeve 12 and the shaft body 11 .

In this embodiment, the electronic device may be a communication terminal, and as a "communication terminal" (or simply "terminal") as used herein includes, but is not limited to, is configured to be connected via a wired line (eg, via a public switched telephone network ( PSTN), digital subscriber line (DSL), digital cable, direct cable connection, and/or another data connection/network) and/or via (eg, for cellular networks, wireless local area networks (WLAN), such as DVB-H networks A digital television network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal's) wireless interface to receive/transmit communication signals. A communication terminal arranged to communicate through 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; Personal Communication System (PCS) terminals that may combine cellular radio telephones with data processing, fax, and data communication capabilities; may include radio telephones, pagers, Internet/Intranet access , a PDA with a web browser, memo pad, calendar, and/or a global positioning system (GPS) receiver; and conventional laptop and/or palm receivers or other electronic devices including radiotelephone transceivers. A mobile phone is a mobile terminal equipped with a cellular communication module.

Optionally, the electronic device in the present application may be a foldable smartphone, a tablet computer, a notebook computer, a smart wearable device (eg, a smart watch, a smart wristband, etc.), a smart wearable medical device (eg, a smart sphygmomanometer) etc.

By setting the shaft assembly, the present application includes: a shaft body; an elastic sleeve sleeved on the shaft body; a retractable driving mechanism, connected with the elastic sleeve, for adjusting the elastic force after the axial movement of the shaft body relative to the elastic sleeve is completed. The sleeve applies the first driving force to reduce the gap between the elastic sleeve and the shaft body, so that when the shaft assembly is axially stretched relative to the elastic sleeve, the shaft and the elastic sleeve can maintain a relatively large gap, which is convenient for During the expansion and contraction of the shaft, after the shaft assembly is telescopically completed relative to the elastic sleeve, that is, when the shaft assembly is kept relatively stationary with the elastic sleeve, maintaining a relatively small gap between the shaft and the elastic sleeve can improve the waterproof sealing effect.

The above description is only an embodiment of the present application, and is not intended to limit the scope of the patent of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present application, or directly or indirectly applied to other related technologies Fields are similarly included within the scope of patent protection of this application.

Claims (12)

1. a kind of shaft assembly, which is characterized in that the shaft assembly includes:

Axis body；

Resilient sleeve is sheathed on the axis body；

Folding and unfolding driving mechanism is connect with the resilient sleeve, for moving axially in the axis body relative to the resilient sleeve First Driving Force is applied to the resilient sleeve after the completion, so that the gap between the resilient sleeve and the axis body becomes smaller.

2. shaft assembly according to claim 1, which is characterized in that the folding and unfolding driving mechanism is used for opposite in the axis body The second driving force is applied to the resilient sleeve when resilient sleeve axial movement or before axial movement, so that described Gap between resilient sleeve and the axis body becomes larger.

3. shaft assembly according to claim 1, which is characterized in that the folding and unfolding driving mechanism is used for opposite in the axis body First driving applied to the resilient sleeve is released when resilient sleeve axial movement or before axial movement Power, so that the resilient sleeve is sprung back by own resilient, so that the gap between the resilient sleeve and the axis body Become larger.

4. shaft assembly according to claim 1, which is characterized in that the shaft assembly further comprises sealant, described close Sealing is set on the resilient sleeve inner wall.

5. shaft assembly according to claim 1, which is characterized in that the resilient sleeve includes sleeve part and driving force effect Portion, axially disposed jagged on the outer wall of the sleeve part, the driving force effect portion is connect with the sleeve part.

6. shaft assembly according to claim 5, which is characterized in that driving force effect portion quantity is two and difference position In the notch two sides.

7. shaft assembly according to claim 5, which is characterized in that the driving force effect portion and the sleeve part are close to institute State the edge connection of notch.

8. shaft assembly according to claim 6, which is characterized in that the folding and unfolding driving mechanism is for driving two drives Power service portion is close to each other perhaps separate so that the gap between the resilient sleeve and the axis body becomes smaller or becomes larger.

9. a kind of telescoping mechanism of electronic device, which is characterized in that the telescoping mechanism includes:

Axis body；

Resilient sleeve is sheathed on the axis body；

Telescoping drive mechanism is connect with the axis body, for driving the axis body to move axially relative to the resilient sleeve, with Band animal body is mobile；

Folding and unfolding driving mechanism is connect with the resilient sleeve, and is electrically connected with the telescoping drive mechanism；

Wherein, telescoping drive mechanism Xiang Suoshu after driving the axis body to complete relative to resilient sleeve axial movement Folding and unfolding driving mechanism sends the first driving signal, and the folding and unfolding driving mechanism is according to the first driving signal received to the bullet Property sleeve apply First Driving Force so that the gap between the resilient sleeve and the axis body becomes smaller.

10. telescoping mechanism according to claim 9, which is characterized in that the telescoping drive mechanism is driving the axis body When relative to resilient sleeve axial movement or folding and unfolding driving mechanism described in the forward direction of axial movement sends the second driving letter Number, the folding and unfolding driving mechanism applies the second driving force to the resilient sleeve according to the second driving signal received, so that Gap between the resilient sleeve and the axis body becomes larger；

Alternatively, the telescoping drive mechanism is moved when driving the axis body to move axially relative to the resilient sleeve or axially Folding and unfolding driving mechanism described in dynamic forward direction sends third driving signal, and the folding and unfolding driving mechanism drives according to the third received The First Driving Force that signal relief applies the resilient sleeve, so that the resilient sleeve is sprung back by own resilient, So that the gap between the resilient sleeve and the axis body becomes larger.

11. telescoping mechanism according to claim 10, which is characterized in that the object is the camera of electronic device, institute Stating when axis body is moved axially relative to the resilient sleeve drives the camera to be exposed to outside the electronic device, or hides In to the electronic device.

12. a kind of electronic device, which is characterized in that the electronic device includes stretching as described in claim 9-11 any one Contracting mechanism.