CN112367417A

CN112367417A - Electronic device

Info

Publication number: CN112367417A
Application number: CN202011154851.3A
Authority: CN
Inventors: 贾玉虎
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-02-12

Abstract

An electronic device of an embodiment of the present application includes a housing assembly, a flexible display screen, and a driving assembly. The shell assembly comprises a first shell and a second shell, the first shell and the second shell can move relatively, and the first shell and the second shell jointly form an accommodating space. One end of the flexible display screen is arranged in the first shell, the other end of the flexible display screen is arranged in the accommodating space, so that part of the flexible display screen is hidden in the accommodating space, and the second shell drives the flexible display screen to be unfolded under the condition that the first shell and the second shell are relatively far away. In the electronic device implemented by the application, a resistance guide rail and a contact element for detection are arranged, and the position of the sliding block is accurately determined by using a resistance type stroke detection mode. Therefore, the detection function and the pushing function are combined into a whole, and the whole application of the module is facilitated. Under the condition of ensuring high-precision stroke detection, the device also has the beneficial effects of strong anti-interference capability, high cost and low power consumption.

Description

Electronic device

Technical Field

The present disclosure relates to the field of electronic devices, and more particularly, to an electronic apparatus.

Background

At present, electronic devices with large-size screens, such as full-screen mobile phones, have become a trend of development. For example, in order to increase the display size of the mobile phone, the camera of the mobile phone is configured to be movable up and down relative to the housing of the mobile phone, or the housing of the mobile phone is configured to be slidable so as to expand the screen. In these mobile phones, the associated slide module is driven to move by a motor. However, the motor may fail to move the slide module to a predetermined position due to a failure in which the steps are lost, the cartridge is jammed, or the like.

In the related art, an electronic device such as a mobile phone detects the stroke of the sliding module through a hall sensor, however, the hall sensor is easily interfered by a surrounding magnetic field, resulting in inaccurate detection.

Disclosure of Invention

The embodiment of the application provides an electronic device.

An electronic device of an embodiment of the present application includes a housing assembly, a flexible display screen, and a driving assembly. The shell assembly comprises a first shell and a second shell, the first shell and the second shell can move relatively, and an accommodating space is formed by the first shell and the second shell together. One end of the flexible display screen is arranged in the first shell, the other end of the flexible display screen is arranged in the accommodating space, so that part of the flexible display screen is hidden in the accommodating space, and the second shell drives the flexible display screen to be unfolded under the condition that the first shell and the second shell are relatively far away. The drive assembly is used for an electronic device and comprises a support, a sliding block, a resistance guide rail and a contact element. The bracket is installed in the accommodating space. The sliding block is arranged in a sliding mode relative to the support and connected with the second shell. The resistance guide rail is fixed on the support and comprises a first contact. The contact element is fixedly connected with the sliding block, the contact element is in contact with the resistance guide rail to form a second contact point, the resistance between the second contact point and the first contact point is used as an access resistance, and the access resistance is changed along with the movement of the sliding block.

In the electronic device implemented by the application, a resistance guide rail and a contact element for detection are arranged, and the position of the sliding block is accurately determined by using a resistance type stroke detection mode. Therefore, the detection function and the pushing function are combined into a whole, and the whole application of the module is facilitated. Under the condition of ensuring high-precision stroke detection, the device also has the beneficial effects of strong anti-interference capability, high cost and low power consumption.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of an electronic device according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of another state of the electronic device according to the embodiment of the present application;

FIG. 3 is an exploded schematic view of an electronic device according to an embodiment of the present application;

FIG. 4 is a schematic cross-sectional view of an electronic device according to an embodiment of the present application;

fig. 5 is another schematic cross-sectional view of an electronic device according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a drive assembly according to an embodiment of the present application;

FIG. 7 is a schematic view of another construction of a drive assembly according to an embodiment of the present application;

fig. 8 is a schematic diagram of a detection circuit according to an embodiment of the present application.

Description of the main element symbols:

an electronic device 1000;

the driving device comprises a driving assembly 100, a support 200, a sliding block 300, a resistor guide 400, a first contact 410, a second contact 420, an access resistor 430, a guide rail core 440, a resistance wire 450, a contact element 500, a driving mechanism 600, a driving part 610, a transmission part 620, a transmission guide 621, a speed change structure 622, a shell assembly 1100, a first shell 1110, a second shell 1120, a rear cover 1130, a flexible display screen 1200, a driving part 1300, teeth 1310, a driving mechanism 1400, a detection circuit 2000 and a processor 3000.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. To simplify the disclosure of the present application, the components and settings of a specific example are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of brevity and clarity and do not in themselves dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1, fig. 2 and fig. 3, an electronic device 1000 according to an embodiment of the present disclosure includes a housing assembly 1100, a flexible display 1200 and a driving assembly 100. The casing assembly 1100 includes a first casing 1110 and a second casing 1120, the first casing 1110 and the second casing 1120 are capable of moving relatively, and the first casing 1110 and the second casing 1120 together form an accommodating space 1111. One end of the flexible display screen 1200 is disposed on the first casing 1110, and the other end of the flexible display screen 1200 is disposed in the accommodating space 1111, so that a portion of the flexible display screen 1200 is hidden in the accommodating space 1111, and the second casing 1120 drives the flexible display screen 1200 to unfold under the condition that the first casing 1110 and the second casing 1120 are relatively far away from each other. The drive assembly 100 is for an electronic device 1000, the drive assembly 100 comprising a support 200, a slider 300, a resistive track 400 and a contact element 500. The bracket 200 is installed in the receiving space 1111. The slider 300 is slidably disposed with respect to the bracket 200, and the slider 300 is coupled to the second housing 1120. . Resistor track 400 is secured to bracket 200 and resistor track 400 includes a first contact 410. The contact element 500 is fixedly connected with the slider 300, the contact element 500 is in contact with the resistance rail 400 to form a second contact 420, the resistance between the second contact 420 and the first contact 410 is used as an access resistance 430, and the access resistance 430 is changed along with the movement of the slider 300.

The electronic device 1000 of the present application is equipped with the resistive track 400 and the contact element 500 for detection, and the resistive track 400 and the contact element 500 precisely determine the position of the slider 300 by using a resistive stroke detection method.

In addition, the driving assembly 100 can combine the detection function and the pushing function into a whole, thereby facilitating the application of the whole module. Under the condition of ensuring high-precision stroke detection, the device also has the beneficial effects of strong anti-interference capability, high cost and low power consumption.

The electronic device 1000 of the present embodiment includes a driver 1300. It is understood that the electronic device 1000 according to the embodiment of the present disclosure includes, but is not limited to, a mobile terminal such as a mobile phone, a tablet, or other portable electronic devices, and the electronic device 1000 is taken as an example of a mobile phone herein.

In some embodiments, the electronic device 1000 includes a driving member 1300 disposed in the accommodating space 1111, the flexible display screen 1200 bypasses the driving member 1300, and when the first casing 1110 and the second casing 1120 are relatively far away from each other, the driving member 1300 drives the flexible display screen 1200 to unfold.

Specifically, the accommodating space 1111 can be used for accommodating the driving member 1300, the camera, the driving mechanism 1400, and other components. The housing assembly 1100 may further include a rear cover 1130, and the rear cover 1130 and the first and

second housings

1110 and 1120 together form an accommodating space 1111.

The driving member 1300 is disposed in the second casing 1100, one end of the flexible display screen 1200 is disposed in the first casing 1110, the flexible display screen 1200 bypasses the driving member 1300, and the other end of the flexible display screen 1200 is disposed in the accommodating space 1111, so that a part of the flexible display screen 1200 is hidden in the accommodating space 1111, and a part of the flexible display screen 1200 hidden in the accommodating space 1111 may not be lighted. The first casing 1110 and the second casing 1120 are relatively far away from each other, and the driving member 1300 can drive the flexible display screen 1200 to unfold, so that more flexible display screens 1200 are exposed out of the accommodating space 1111. The flexible display 1200 exposed outside the accommodating space 1111 is illuminated, so that a display area presented by the electronic device 1000 is enlarged.

Referring to fig. 4 and 5, in some embodiments, the driving member 1300 may be a rotating shaft structure with teeth 1310 on the outer portion, the flexible display screen 1200 is linked with the driving member 1300 by engaging, and the driving member 1300 drives a portion of the flexible display screen 1200 engaged with the driving member 1300 to move and unfold when the first casing 1110 and the second casing 1120 are relatively far away from each other.

It is understood that the driving member 1300 can also be a circular shaft without the belt 1310, and when the first casing 1110 and the second casing 1120 are relatively far away, the driving member 1300 can stretch the portion of the flexible display screen 1200 wound on the driving member 1300, so that more flexible display screens are exposed out of the accommodating space 1111 and are in a flat state. Specifically, the driving member 1300 is rotatably disposed in the second housing 1120, and when the flexible display screen 1200 is gradually stretched, the driving member 1300 can rotate along with the movement of the flexible display screen 1200. In other embodiments, the driving member 1300 can be fixed on the second housing 1120, and the driving member 1300 has a smooth surface. When the flexible display 1200 is spread, the driver 1300 is in slidable contact with the flexible display 1200 through its smooth surface.

When the first casing 1110 and the second casing 1120 are relatively close to each other, the flexible display 1200 can be retracted by the driving member 1300. Or, the electronic device 1000 further includes a reset element (not shown), one end of the flexible display screen 1200 accommodated in the accommodating space 1111 is linked with the reset element, and when the first shell 1110 and the second shell 1120 are relatively close to each other, the reset element drives the flexible display screen 1200 to reset, so that a part of the flexible display screen 1200 is retracted into the accommodating space 1111.

In this embodiment, the driving mechanism 1400 may be disposed in the accommodating space 1111, the driving mechanism 1400 may be linked with the second housing 1120, and the driving mechanism 1400 is configured to drive the second housing 1120 to move away from the first housing 1110, so as to drive the flexible display screen assembly 1200 to extend. It is understood that the driving mechanism 1400 may be omitted, and the user may directly move the first casing 1110 and the second casing 1120 relative to each other by hand or the like.

In some embodiments, the first housing 1110 in the electronic device 1000 may be a main body portion of the electronic device 1000, and the main body portion may include components such as a housing, a circuit board, a battery, and a display screen. The second housing 1120 of the electronic device 1000 may be a set of shrinking components, which may include various sensors, such as optical sensors, distance sensors, earphones, and the like. In one example, the optical sensor is a front camera, and the second housing 1120 extends out, so that the camera is aligned with the face of the user to perform functions of photographing, face recognition and the like. At this time, the driving assembly 100 may be integrated into a module and installed in the electronic device 1000. It is understood that the electronic device 1000 may have a receiving recess therein for disposing the driving assembly 100 and the second housing 1120 according to the embodiment of the present application.

Referring to fig. 6 and 7, the driving assembly 100 according to the embodiment of the present application is used to drive the sliding block 300 to make a sliding motion with respect to the bracket 200, and in this process, the resistive track 400 and the contact element 500 are used to detect the relative position of the sliding block 300 and the bracket 200. The contact element 500 is fixedly connected to the slider 300, so that a change in the position of the slider 300 can bring about a change in the position of the contact element 500, and thus a change in the position of the second contact 420 on the resistor track 400. The resistor track 400 between the first contact 410 and the second contact 420 serves as an access resistor 430, the first contact 410 is fixed, and the second contact 420 moves with the slider 300, so that the distance between the first contact 410 and the second contact 420 is changed, and the length of the access resistor 430 is changed. And the resistance Rx of the access resistor 430 is calculated according to equation (1):

R_x＝ρL/S……(1)

where ρ is the metal resistivity of the resistor track 400, S is the cross-sectional area of the resistor track 400, and L is the length of the access resistor 430. It is understood that the first contact 410 is electrically connected to an external circuit, the slider 300 may be electrically conductive, and the second contact 420 may be electrically connected to the external circuit through the slider 300. The external circuit may be a wheatstone bridge that converts the position information of the slider 300 into an electrical signal and transmits the electrical signal back to the system. The length of the access resistor 430 is related to the resistance value, and the total length of the resistor track 400 is not changed, thereby determining the moving distance of the slider 300. The resistance of the access resistor 430 is measured by a circuit in this application to obtain the precise position of the slider 300.

In the embodiment of the application, the detection device and the mechanical pushing device are combined into a whole, so that the layout, the space occupation, the assembly process and the like of the device are greatly simplified, and the cost of the whole machine is favorably reduced. The bracket 200 may be a frame structure having a shape of a square-wave, so that the slider 300 and other sliding parts have enough sectional space to slide out. The slider 300 may move linearly, and it is understood that the slider 300 may be connected to other sliding components to move linearly together. In addition, the resistance guide rail 400 is used, so that the overall anti-interference capability of the detection mode is better, the detection mode is not interfered by too much of the surrounding environment, and the detection accuracy is improved. The change of the relative position of the slider 300 and the change of the resistance of the access resistor are in an absolute linear relationship, so that the accurate relative position of the slider 300 can be obtained only by accurately measuring the resistance of the access resistor 430.

Referring to fig. 7, in some embodiments, resistance rail 400 includes a rail core 440 and a resistance wire 450. Resistance wire 450 is wound around rail core 440, resistance wire 450 having first contact 410, and contact member 500 is in contact with resistance wire 450 to form second contact 420.

Therefore, the resistance value of the access resistor 430 is changed more obviously, and the detection precision is improved.

Specifically, the rail core 440 may be made of a non-conductive material and formed into a long cylindrical structure, the resistance wire 450 is wound around the rail core 440 to form a strip-shaped resistor, and the resistance wire 450 is used to provide the access resistor 430 for the circuit. Resistance wire 450 is wound on guide rail core 440 in an intensive winding manner, so that on one hand, the total resistance value of resistance wire 450 can be increased, and on the other hand, contact element 500 can be prevented from being clamped in a gap of resistance wire 450 in the advancing process. In addition, the mode that the resistance wire 450 is wound to form the resistor is used, the total resistance value of the access circuit is more convenient to regulate and control, and an accurate detection result is obtained by matching with an external circuit.

Referring to fig. 6 and 7, in some embodiments, a first contact 410 is disposed at an end of the resistor track 400.

In this manner, the access resistor 430 can be detected over the entire resistor track 400 stroke, resulting in position information for the entire stroke.

Specifically, the first contact 410 is disposed at the end of the resistor track 400, the second contact 420 moves along with the slider 300, and the resistor between the first contact 410 and the second contact 420 is connected to the circuit as the access resistor 430, and the stroke length of the access resistor 430 is in a linear relationship with the resistance thereof. Thus, the movement stroke of the whole slider 300 can be detected, and the position information of the slider 300 can be accurately detected.

Referring to fig. 6 and 7, in some embodiments, the contact element 500 includes an elastic element elastically abutting against the resistance guide 400.

In this way, the problem of jamming or failure to move to a predetermined position between the contact element 500 and the resistor track 400 during movement of the slider 300 is avoided.

Specifically, the elastic member serves to elastically abut against the resistance rail 400, and serves to absorb and mitigate an impact during the sliding of the slider 300 along the resistance rail 400, so that the movement of the slider 300 is smooth. It is understood that the elastic member is made of a metal material, and conducts electricity when the elastic member collides with the second contact 420. The elastic element is, for example, two elastic pieces, and the two elastic pieces clamp the resistance rail 400.

Referring to fig. 6 and 7, in some embodiments, the driving assembly 100 includes a driving mechanism 600 disposed on the bracket 200, the driving mechanism 600 is connected to the slider 300, and the driving mechanism 600 is configured to drive the slider 300 to slide. Thus, the driving mechanism 600 provides power to ensure the normal sliding of the slider 300.

Specifically, the driving mechanism 600 serves to provide a driving force and transmit the driving force to the slider 300. The driving mechanism 600 of the embodiment of the present application can be driven by using a motor, so that the driving mechanism 600 has the performance of miniaturization, high driving efficiency and reverse control.

Referring to fig. 6 and 7, in some embodiments, the driving mechanism 600 includes a driving member 610 and a transmission member 620 disposed on the support 200. The driving unit 610 is connected to the transmission unit 620, and the driving unit 610 drives the slider 300 to slide through the transmission unit 620.

In this way, the driving member 610 provides a driving force and transmits the driving force to the slider 300 through the transmission member 620, thereby ensuring the slider 300 to slide normally.

Specifically, the driving part 610 is used to provide a driving force, and the driving part 610 may be a motor, which has advantages of high driving efficiency, adjustable driving rate and reverse control. In addition, the electronic device 1000 can directly provide electric energy by using the motor for driving, and the motor for driving can be conveniently miniaturized and occupies a smaller space. The transmission member 620 is an intermediate member between the driving member 610 and the moving slider 300, and the transmission member 620 serves to transmit the driving force generated by the driving member 610 to the slider 300.

Referring to fig. 6 and 7, in some embodiments, the transmission member 620 includes a transmission guide 621 and a speed changing structure 622, the speed changing structure 622 is connected to the driving member 610 and the transmission guide 621, and the transmission guide 621 is connected to the slider 300 to drive the slider 300 to move.

In this manner, the driving force generated by the driving part 610 can be transmitted to the slider 300 so that the slider 300 can be smoothly moved.

The shifting structure 622 of the present embodiment can be a gear box, utilizing different numbers of gear teeth to form a fixed gear ratio. The shifting structure 622 is used to vary the rotational speed and torque produced by the drive member 610. The speed changing structure 622 connects the driving part 610 and the transmission guide 621, and transmits the driving force generated by the driving part 600 to the transmission guide 621 at a suitable torque and rotation speed, and the transmission guide 621 converts the rotation motion into a linear motion of the slider 300, thereby achieving a sliding motion of the slider 300 and other components.

Specifically, the transmission guide 621 may be a screw rod structure, so that the entire driving structure 600 is compact, the rotational motion of the driving part 610 is converted into the linear motion of the slider 300, and the screw rod structure further has the advantages of smooth transmission, high precision and low noise. In some embodiments, the transmission guide 621 may be a belt transmission structure having smooth transmission, buffering and shock absorbing functions, and overload protection functions. In some embodiments, the transmission guide 621 may also be a gear transmission, which has the features of compact structure and high transmission efficiency. In addition, in the embodiment of the application, the specific transmission mode is not limited, and the requirement can be met.

Referring to fig. 6 and 7, in some embodiments, the driving guide 621 is electrically connected to the contact element 500 through the slider 300.

Therefore, the connection of the lead is facilitated, and the damage of elements caused by winding of the lead and the slider 300 is avoided.

Illustratively, the driving guide 621 may be a screw structure such that the driving guide 621 may be electrically conductive. Since the second contact 420 is in a moving state, the access resistor 430 between the first contact 410 and the second contact 420 cannot be directly connected to an external circuit through a wire. The second contact 420 is connected with the slider 300, and the slider 300 is connected with a lead screw, and the end part of the lead screw can be connected with a lead wire. In one embodiment, the first contact 410 serves as an external circuit connection point, and the portion of the lead screw abutting against the bracket 200 serves as a second external circuit connection point. In another embodiment, the first contact 410 serves as an external circuit connection point, and the portion of the lead screw abutting against the bracket 200 serves as a second external circuit connection point. The electrical connection of the connecting resistor 430 to the external circuit is realized through the driving guide 621, the slider 300 and the contact element 500. Thus, the connection of the wires and the movement of the slider 300 are facilitated by the slider 300 and the driving guide 621 such that the wire connection portions are located at the resistance rail 400.

Referring to fig. 1, fig. 6 and fig. 8, an electronic device 1000 according to an embodiment of the present disclosure includes a detection circuit 2000, a processor 3000 and a driving element 100 according to any of the embodiments. A sensing circuit 2000 is electrically connected to the first contact 410 and the second contact 420, the sensing circuit 2000 being configured to sense the access resistance 430. The processor 3000 is configured to determine the stroke of the slider 300 based on the access resistance 430.

The present application is embodied in a drive assembly 100 and an electronic device 1000, which are equipped with a resistive track 400 and a contact element 500 for sensing, and the resistive track 400 and the contact element 500 precisely determine the position of the slider 300 using a resistive stroke sensing method. Therefore, the detection function and the pushing function are combined into a whole, and the whole application of the module is facilitated. Under the condition of ensuring high-precision stroke detection, the device also has the beneficial effects of strong anti-interference capability, high cost and low power consumption.

In the driving assembly 100 and the electronic device 1000 implemented in the present application, the slider 300 linearly moves along the resistance guide 400, and the stroke and the position of the slider 300 can be determined by detecting the resistance value of the access resistor 430, so that the slider 300 can be precisely controlled. The detection circuit 2000 is connected to the access resistor 430 through a wire, converts the position information into an electrical signal and transmits the electrical signal to the processor 3000, and the processor 3000 accurately processes the electrical signal, feeds back the information, and controls the subsequent movement process of the slider 300.

As shown in fig. 8, fig. 8 is a schematic diagram of a detection circuit 2000 according to an embodiment of the present application. The detection circuit 2000 in the embodiment of the present application may be the external circuit described above. Illustratively, the detection circuit 2000 may be a Wheatstone bridge, which is a circuit that can accurately measure a resistance. And G is a galvanometer used for checking whether the branch in which the galvanometer is positioned has current or not. The four resistors are called bridge arms of the bridge respectively, the wheatstone bridge measures the change of the physical quantity by using the change of the resistors, the processor 3000 can acquire and process the voltages connected to the two ends of the resistor 430, and then the corresponding change of the physical quantity can be calculated, so that the method is a measuring mode with high precision. Three resistors in the bridge are fixed and are respectively R1, R2 and R3, and the fourth resistor is the variable resistance Rx of the access resistor 430. Illustratively, the current flowing through the R1 and R2 legs is I1, the current flowing through the R3 and Rx legs is I2, and the bridge supply voltage is VCC. The voltage across each resistor can be calculated by ohm's law. On two bridge arms of R1 and R2, VCC voltage is divided by R1 and R2, and voltage obtained at two ends of a resistor of R2 is V1; on the bridge arm of R3 and Rx, VCC voltage is divided by R3 and Rx, and the voltage obtained at two ends of the R3 resistor is V2. Therefore, the current I1 flowing through the resistors R1 and R2 is calculated by the formula (2):

I1＝VCC/(R1+R2)……(2)

the voltage V1 across R2 is calculated by equation (3):

V1＝I1·R2＝VCC·R2/(R1+R2)……(3)

the current I2 flowing through resistors R3 and Rx is calculated by equation (4):

I2＝VCC/(R3+Rx)……(4)

the voltage V2 across R3 is calculated by equation (5):

V2＝I2·R3＝VCC·R3/(R3+Rx)……(5)

the voltage difference Δ V between V1 and V2 is calculated by equation (6):

the resistance values of the three resistors R1, R2 and R3 are fixed, the processor 3000 can acquire the access voltage difference Δ V, calculate the variation of the corresponding access resistor 430, calculate the length of the access resistor 430 according to the formula (1), and finally obtain the stroke length of the slider 300.

Illustratively, the driving force generated by the driving part 610 is transmitted to the slider 300 through the speed changing structure 622 and the transmission guide 621 in turn. The slider 300 moves linearly along the resistance rail 400, the contact element 500 is fixedly connected with the slider 300, the contact element 500 is in contact with the resistance rail 400 to form a second contact 420, and the second contact 420 and the first contact 410 at the end of the resistance rail 400 form two connection points of the detection circuit 2000. The access resistor 430 is connected between the first contact 410 and the second contact 420 to the detection circuit 2000. When the slider 300 moves forward for a certain distance, the second contact 420 moves along with the slider 300, and the length of the access resistor 430 is reduced, and the resistance value is reduced. The resistance value of the access resistor 430 is measured by the detection circuit 2000, the processor 3000 calculates the length of the access resistor 430 according to the resistivity and the resistance value of the access resistor 430 by using the formula (1), and the length of the access resistor 430 is subtracted from the total length of the resistor guide 400 to obtain the travel distance traveled by the slider 300.

Referring to fig. 1, 2 and 6, in some embodiments, the processor 3000 is configured to obtain the current resistivity of the resistor track 400 and determine the current stroke of the slider 300 according to the current resistivity and the current on-resistance 430 detected by the detection circuit 2000.

In this manner, the processor 3000 can detect the position of the slider 300 more accurately.

It is understood that the temperature of the electronic device 1000 may increase as the user continues to use the electronic device 1000, or the temperature of the electronic device 1000 may change as the user moves to another location with the electronic device 1000. While the change of temperature causes the change of the current resistivity of the resistor, the resistor track 400 in the embodiment of the present application may use a metal resistor, and the resistivity and the temperature of the metal resistor have a linear relationship under the conditions of normal temperature and small temperature change. Therefore, before detection, the processor 3000 first obtains the current resistivity of the resistor track 400, then measures the resistance value of the access resistor 430 through the detection circuit 2000, and the processor 3000 calculates the length of the access resistor 430 according to the current resistivity and the resistance value of the access resistor 430 through the formula (1), and then subtracts the length of the access resistor 430 from the total length of the resistor track 400 to obtain the travel distance traveled by the slider 300.

Referring to fig. 2 and 6, in some embodiments, the present resistivity is determined according to at least one of the following:

acquiring the current total resistance of the resistance guide rail 400, and calculating and determining the current resistivity according to the current total resistance and the total length of the resistance guide rail 400;

and (II) acquiring the current temperature of the resistance guide rail 400, and determining the current resistivity according to the relationship between the temperature and the resistivity.

In this way, the current resistivity can be obtained, thereby enabling accurate detection.

Specifically, in the first mode (a), the current total resistance value of the resistance rail 400 is detected before each movement of the slider 300, and then the current resistivity is calculated through the length of the resistance rail 400. Illustratively, the detection circuit 2000 may include a switch tube, and the switch tube may connect the detection circuit 2000 to two end points of the resistor track 400, so that the total resistance value of the resistor track 400 is measured by the detection circuit 2000, and the processor 3000 determines the current resistivity by calculating according to the current total resistance of the resistor track 400 and the total length of the resistor track 400.

Specifically, in the second mode (i), the electronic device 1000 may include a temperature sensor, the temperature sensor measures the current temperature of the resistor track 400, and then transmits the temperature information to the processor 3000, and the processor 3000 obtains the current resistivity of the resistor track 400 according to the resistivity curve of the material of the resistor track 400 (the metal resistivity curve of the specific material is known).

Referring to fig. 1 and 2, in some embodiments, the electronic device 1000 includes a fixed portion 1100 and a movable portion 1200, the movable portion 1200 can move relative to the fixed portion 1100, and the slider 300 is fixedly connected to the movable portion 1200. In this manner, modular design of the electronic device 1000 is facilitated.

The fixing portion 1100 in the electronic device 1000 according to the embodiment of the present application may be a main body portion of the electronic device 1000, and the main body portion may include components such as a housing, a circuit board, a battery, and a display screen. The moving part 1200 in the electronic device 1000 may be a set of shrinking components, and the shrinking components may include various sensors, such as an optical sensor, a distance sensor, a receiver, and the like. In one example, the optical sensor is a front camera, and the moving part 1200 is extended, so that the camera is aligned with the face of the user, and functions of photographing, photographing and face recognition are completed. In the present embodiment, the driving assembly 100 can be integrated into a module and installed in the electronic device 1000. It is understood that the electronic device 1000 may have a receiving groove therein for disposing the driving assembly 100 and the moving part 1200 according to the embodiment of the present application.

The electronic device 1000 according to the embodiment of the present application may be a mobile terminal device such as a mobile phone and a tablet computer, or may be a device having an image pickup device such as a game device, a vehicle-mounted computer, and a notebook computer. The driving assembly 100 of the embodiment of the present application can be applied to a lifting camera and a stretching screen of a mobile phone, a computer and a game device. In the embodiment of the present application, the specific type of the electronic device 1000 is not limited as long as the driving assembly of the embodiment of the present application is included, so as to meet different requirements.

In the description of the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description herein, references to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present application have been shown and described above, it is to be understood that the above embodiments are exemplary and not to be construed as limiting the present application, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims

1. An electronic device, comprising:

the shell assembly comprises a first shell and a second shell, the first shell and the second shell can move relatively, and an accommodating space is formed by the first shell and the second shell together;

one end of the flexible display screen is arranged in the first shell, the other end of the flexible display screen is arranged in the accommodating space, so that part of the flexible display screen is hidden in the accommodating space, and the second shell drives the flexible display screen to be unfolded under the condition that the first shell and the second shell are relatively far away;

a drive assembly, the drive assembly comprising:

the bracket is arranged in the accommodating space;

the sliding block is arranged in a sliding mode relative to the bracket and is connected with the second shell;

a resistor track fixed to the support, the resistor track including a first contact; and

the contact element is fixedly connected with the sliding block and is in contact with the resistance guide rail to form a second contact point, and the resistance between the second contact point and the first contact point is used as an access resistance which is changed along with the movement of the sliding block.

2. The electronic device of claim 1, wherein the resistive track comprises a track core and a resistive wire wound around the track core, the resistive wire having the first contact, the contact element contacting the resistive wire to form the second contact.

3. The electronic device of claim 1, wherein the first contact is disposed at an end of the resistive track.

4. An electronic device according to claim 1, characterized in that the contact element comprises a resilient element, which resiliently abuts against the resistive track.

5. The electronic device according to any one of claims 1-4, wherein the driving assembly comprises a driving mechanism disposed on the bracket, the driving mechanism being connected to the slider, the driving mechanism being configured to drive the slider to slide.

6. The electronic device according to claim 5, wherein the driving mechanism comprises a driving member disposed on the bracket and a transmission member connected to the driving member, and the driving member drives the slider to slide through the transmission member.

7. The electronic device of claim 6, wherein the transmission member comprises a transmission guide and a speed change structure, the speed change structure connects the driving member and the transmission guide, and the transmission guide is connected with the slider to move the slider.

8. The electronic device of claim 7, wherein the transmission guide is electrically connected to the contact element through the slider.

9. The electronic device of claim 1, wherein the processor is configured to obtain a current resistivity of the resistive track and determine a current stroke of the slider according to the current resistivity and a current on-resistance detected by the detection circuit.

10. The electronic device of claim 1, wherein the current resistivity is determined according to at least one of:

obtaining the current total resistance of the resistance guide rail, and calculating and determining the current resistivity according to the current total resistance and the total length of the resistance guide rail;

and acquiring the current temperature of the resistance guide rail, and determining the current resistivity according to the relationship between the temperature and the resistivity.

11. The electronic device of claim 1, wherein the electronic device comprises a fixed portion and a movable portion movable relative to the fixed portion, and wherein the slider is fixedly connected to the movable portion.