Electronic devices

Abstract

The present invention provides a control method for an electronic device, the electronic device includes a memory alloy part, the method includes: sending an electrical signal to the memory alloy part; detecting the resistance value of the memory alloy part; and judging whether the comparison value exceeds a preset range value according to the resistance value and the resistance change value of the memory alloy part; if the comparison value exceeds the preset range value, stopping sending the electrical signal to the memory alloy part to prevent the memory alloy part from being damaged or broken due to the lack of space contraction, wherein the resistance change value is the resistance change value generated by the contraction of the memory alloy part without being stuck. The present invention also provides an electronic device using the above control method.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic equipment, and in particular to an electronic equipment. Background Art

[0002] With the development and application of flexible screens, electronic devices with variable screen shapes have appeared in related technologies, such as foldable screen mobile phones, sliding screen mobile phones, etc. Taking the sliding screen mobile phone as an example, the sliding screen mobile phone includes two shells that are slidably connected to each other. Generally, a motor is used to push the two shells away from each other or close to each other, so as to realize the unfolding or sliding of the sliding screen. The two shells of the sliding screen mobile phone in the related technology are unlocked by moving the lock tongue through the contraction of the memory alloy. However, the lock tongue in the prior art is often affected by external factors and becomes stuck, so that the memory alloy cannot be contracted when powered on and is broken or broken. Summary of the invention

[0003] In view of this, an embodiment of the present invention provides an electronic device that prevents a memory alloy from being damaged or broken.

[0004] An embodiment of the present invention further provides an electronic device, characterized in that the electronic device includes a locking member that can move along a first direction, a memory alloy member connected to the locking member, a first positioning member that moves along a second direction, a reset member, a fixing member, and a resistance detection control module; the locking member includes a lock tongue, and the resistance detection control module includes a memory alloy member control circuit electrically connected to the memory alloy member, a resistance value detection circuit electrically connected to the memory alloy member, and a comparator electrically connected to the memory alloy member control circuit and the resistance value detection circuit, the comparator is preset with a preset range value, and after the memory alloy member control circuit sends an electrical signal to the memory alloy member, the electrical The resistance detection circuit samples the resistance value of the memory alloy component and sends it to the comparator. The comparator receives the electrical signal sent by the memory alloy component control circuit. The comparator obtains the resistance change value caused by the contraction of the memory alloy component when the locking component and the first positioning component are not stuck according to the electrical signal. The comparator compares the resistance value with the resistance change value to obtain a comparison value, and determines whether the comparison value exceeds the preset range value. The locking component is slidably arranged in the fixing component along the first direction, and the reset component is arranged between the fixing component and the locking component. The reset component elastically pushes the locking component to make the lock tongue extend out of the fixing component.

[0005] The memory alloy component of the electronic device in the present invention is connected to the locking component, and the memory alloy component is electrically connected to the memory alloy component control circuit and the resistance value detection circuit, and the comparator is electrically connected to the memory alloy component control circuit and the resistance value detection circuit; when the memory alloy component control circuit sends an electrical signal to the memory alloy component, the resistance value detection circuit samples the resistance value of the memory alloy component and sends it to the comparator, and at the same time, the comparator receives the electrical signal sent by the memory alloy component control circuit, and the comparator obtains the resistance change value caused by the contraction of the memory alloy component when the locking component and the positioning component are not stuck according to the electrical signal, and the comparator compares the resistance value with the resistance change value to obtain a comparison value, and when the comparison value exceeds the preset range value, it means that the locking component and the positioning component are stuck and the memory alloy component has not contracted, at this time, the comparator sends a stop signal to the memory alloy component control circuit, and the memory alloy component control circuit receives the stop signal and stops sending electrical signals to the memory alloy component to prevent the memory alloy component from being damaged or broken due to lack of space contraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] In order to more clearly illustrate the technical solution and effects of the present invention, it is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0007] Figure 1 It is a schematic diagram of the three-dimensional structure of an electronic device according to one embodiment of the present invention;

[0008] Figure 2 yes Figure 1 A schematic diagram of a three-dimensional structure of a housing assembly of an electronic device in an unfolded state;

[0009] Figure 3 yes Figure 1 A block diagram showing the connection relationship of a resistance detection control module of an electronic device;

[0010] Figure 4 yes Figure 2 Schematic diagram of the three-dimensional structure of the memory alloy wire;

[0011] Figure 5 yes Figure 4 The temperature and resistivity curve of the memory alloy wire;

[0012] Figure 6 yes Figure 2 A schematic diagram of the three-dimensional structure of the locking system;

[0013] Figure 7 yes Figure 6 An enlarged view of part VII in FIG.

[0014] Figure 8 yes Figure 4 A cross-sectional view of the locking system in FIG.

[0015] Fig. 9 yes Figure 8 An exploded schematic diagram of the locking system in FIG.

[0016] Fig.10 yes Figure 2 An enlarged view of the X portion in FIG.

[0017] Fig.11 yes Figure 2 A flow chart of a control method for an electronic device in;

[0018] Fig.12 yes Figure 2 A schematic diagram of the three-dimensional structure of the shell assembly in the contracted state.

[0019] Main markings:

[0020] 100, electronic device; 20, housing; 22, first housing; 221, top wall; 2210, positioning groove; 223, first end wall; 2230, guide groove; 224, first side wall; 2240, connecting groove; 225, connecting strip; 24, second housing; 241, bottom wall; 243, second end wall; 2430, guide slide; 244, second side wall; 2443, stop groove; 246, guide rail; 247, convex strip; 30, locking system; 31, locking member; 310, locking tongue; 312, first connecting portion; 314, first connecting hole; 32, memory alloy member; 322, memory alloy wire; 324, fixing portion; 33, reset member; 34, fixing member; 340, guide slot; 341, outlet; 344, fixing bar; 346, through hole; 347, stop portion; 348, first fixing hole; 35, resistance detection control module; 351, memory alloy control circuit; 353, resistance value detection circuit; 355, comparator; 36, connecting piece; 362, guide slide rod; 363, second connecting part; 3631, positioning port; 3634, second connecting hole; 3635, positioning slot; 37, second positioning piece; 372, second fixing hole; 38, first positioning piece; 380, locking hole; 40, power supply; 50, supporting device; 60, flexible screen; 62, positioning area; 64, sliding area; 70, travel detection device; 80, driving piece; 90, main board. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0022] It should be noted that the reference to "embodiment" or "implementation method" in this document means that the specific features, structures or characteristics described in conjunction with the embodiment or implementation method may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with 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.

[0023] The terms "first" and "second" appearing in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" refers to two or more, unless otherwise clearly and specifically defined. In the description of this application, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", and "set on..." should be understood in a broad sense, for example, it can be a fixed connection, or it can be a detachable connection, or it can be connected in one piece; it can be a mechanical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] Please also read Figure 1-Figure 3The electronic device 100 of one embodiment of the present invention can be applied to mobile phones, tablet computers, laptop computers, monitors, smart watches, portable multimedia players, mobile medical devices, etc. In this embodiment, a mobile phone is used as an example for specific description. The electronic device 100 in this embodiment includes a housing 20, a locking system 30 arranged in the housing 20, a power supply 40, a supporting device 50, a flexible screen 60, a travel detection device 70, a driving member 80 and a mainboard 90; the housing 20 can be but is not limited to a telescopic housing or a folding housing, etc. In this embodiment, a telescopic housing is used as an example for specific description. Specifically, the shell 20 includes a first shell 22 and a second shell 24, the locking system 30 is arranged between the first shell 22 and the second shell 24, and the second shell 24 is slidably connected to the first shell 22, so that the first shell 22 and the second shell 24 can be retracted or expanded with each other; the power supply 40 provides power to the locking system 30, the flexible screen 60, the stroke detection device 70, the driving member 80 and the main board 90, and the main board 90 is electrically connected to the locking system 30, the power supply 40, the flexible screen 60, the stroke detection device 70 and the driving member 80; the locking system 30 includes A locking member 31 that can move along the first direction, a memory alloy member 32 connected to the locking member 31, a first positioning member 38 that can move along the second direction, and a resistance detection control module 35 provided on the main board 90; the support device 50 is a hinge-like structure, one side of the support device 50 is connected to the first shell 22, and the support device 50 is arranged around the second shell 24; the flexible screen 60 includes a positioning area 62 and a sliding area 64 located on one side of the positioning area 62, the positioning area 62 is fixed to the front of the first shell 22, and the sliding area 64 is attached to the surface of the support device 50 away from the second shell 24. When the first shell 22 and the second shell 24 slide relative to each other along the second direction, the support device 50 slides around the second shell 24, and the sliding area 64 slides around the second shell 24 with the support device 50. Specifically, when the mainboard 90 controls the driving member 80 to drive the second housing 24 to extend in the second direction relative to the first housing 22, the second housing 24 drives the supporting device 50 to slide and unfold relative to the second housing 24, and the sliding area 64 is synchronously unfolded with the supporting device 50, so that the display area of ​​the flexible screen 60 is increased; when the mainboard 90 controls the driving member 80 to drive the second housing 24 to contract in the second direction relative to the first housing 22, the second housing 24 drives the supporting device 50 to slide and curl relative to the second housing 24, and the sliding area 64 is synchronously curled with the supporting device 50, so that the volume of the housing 20 is reduced. When the sliding area 64 is unfolded, the display surface of the flexible screen 60 can be increased, which is convenient for users to use; when the sliding area 64 is curled, the volume of the electronic device 100 can be reduced and convenient to carry.During the movement of the second shell 24 relative to the first shell 22, the mainboard 90 can control the locking system 30 to automatically lock between the second shell 24 and the first shell 22 according to the stroke detection device 70, so that the second shell 24 and the first shell 22 are positioned relative to each other; when the locking piece 31 and the first positioning piece 38 are stuck to each other, the resistance detection control module 35 controls the power supply 40 and the memory alloy part 32 to cut off power, and the memory alloy part 32 will not experience spatial shrinkage, so as to prevent the memory alloy part 32 from shrinking and being damaged or broken.

[0025] Specifically, the resistance detection control module 35 includes a memory alloy part control circuit 351 electrically connected to the memory alloy part 32, a resistance value detection circuit 353 electrically connected to the memory alloy part 32, and a comparator 355 electrically connected to the memory alloy part control circuit 351 and the resistance value detection circuit 353; in some embodiments, the memory alloy part control circuit 351, the resistance value detection circuit 353 and the comparator 355 can be integrated in a processor on the mainboard 90; in some embodiments, the memory alloy part control circuit 351, the resistance value detection circuit 353 and the comparator 355 can also be respectively arranged in different processors on the mainboard 90; in some embodiments, the memory alloy part control circuit 351, the resistance value detection circuit 353 and the comparator 355 can also be implemented by separate hardware. The comparator 355 is preset with a preset range value. After the memory alloy component control circuit 351 sends an electrical signal to the memory alloy component 32, the resistance value detection circuit 353 samples and detects the resistance value of the memory alloy component 32 and sends it to the comparator 355. The comparator 355 receives the electrical signal sent by the memory alloy component control circuit 351. The comparator 355 obtains the resistance change value caused by the contraction of the memory alloy component 32 when the locking component 31 and the first positioning component 38 are not stuck according to the electrical signal, that is, the resistance change value is the resistance change value caused by the contraction of the memory alloy component 32 when it is not stuck; the comparator 355 compares the resistance value with the resistance change value to obtain a comparison value, and determines whether the comparison value is within the preset range value; the locking component 31 of the locking system 30 is movably arranged on the first shell 22 along the first direction, and the first positioning component 38 of the locking system 30 is arranged on the second shell 24. When the locking member 31 and the first positioning member 38 are stuck to each other, the comparison value between the resistance value and the resistance change value obtained by the comparator 355 exceeds the preset range value, and the comparator 355 sends a stop signal to the memory alloy member control circuit 351, and the memory alloy member control circuit 351 receives the stop signal and controls the power supply 40 to stop sending electrical signals to the memory alloy member 32; when the locking member 31 and the first positioning member 38 are not stuck to each other, the comparison value between the resistance value and the resistance change value obtained by the comparator 355 is within the preset range value, and the comparator 355 sends a signal to the memory alloy member control circuit 351, and the memory alloy member control circuit 351 receives the signal and controls the power supply 40 to send an electrical signal to the memory alloy member 32, so that the memory alloy member 32 contracts and drives the locking member 31 to move along the first direction to disengage from the first positioning member 38. At this time, the second shell 24 can move along the second direction relative to the first shell 22.

[0026] In the present invention, the front side refers to the side facing the same direction as the light-emitting side of the flexible screen 60, and the back side refers to the side facing the opposite direction to the light-emitting side of the flexible screen 60; the Y-axis direction refers to the sliding direction of the locking member 31 relative to the first positioning member 38, that is, the first direction is the Y-axis direction; the X-axis direction refers to the sliding direction of the second housing 24 relative to the first housing 22, and the second direction is the X-axis direction; the third direction refers to the direction perpendicular to both the first direction and the second direction, that is, the third direction is the Z-axis direction, that is, the thickness direction of the electronic device 100. The preset range value is a percentage value, for example, the preset range value can be but is not limited to 5%~10% or 8%~12%, etc.

[0027] The memory alloy component 32 of the locking system 30 of the present invention is connected to the locking component 31, and the memory alloy component 32 is electrically connected to the memory alloy component control circuit 351 and the resistance value detection circuit 353, and the comparator 355 is electrically connected to the memory alloy component control circuit 351 and the resistance value detection circuit 353; when the memory alloy component control circuit 351 sends an electrical signal to the memory alloy component 32, the resistance value detection circuit 353 samples the resistance value of the memory alloy component 32 and sends it to the comparator 355, the comparator 355 receives the electrical signal sent by the memory alloy component control circuit 351, and the comparator 355 obtains the resistance change value caused by the contraction of the memory alloy component 32 when the locking component 31 and the first positioning component 38 are not stuck according to the electrical signal. In some embodiments, the resistance change value caused by the contraction of the memory alloy component 32 when it is stuck can also be preset in the comparator 355, and the comparator 355 compares the resistance value with the resistance change value to obtain a comparison value; when the When the comparison value exceeds the preset range value, it means that the locking member 31 and the first positioning member 38 are stuck, and the memory alloy member 32 has not contracted. At this time, the comparator 355 sends a stop signal to the memory alloy member control circuit 351, and the memory alloy member control circuit 351 receives the stop signal and stops sending electrical signals to the memory alloy member 32, that is, the power supply 40 and the memory alloy member 32 are powered off to prevent the memory alloy member 32 from being damaged or broken due to the inability to shrink in space; in this embodiment, when the comparison value is within the preset range value, it means that the locking member 31 and the first positioning member 38 are not stuck, and the memory alloy member 32 has contracted. At this time, the comparator 355 sends a signal to the memory alloy member control circuit 351, and the memory alloy member control circuit 351 receives the signal and sends an electrical signal to the memory alloy member 32, that is, the power supply 40 and the memory alloy member 32 are powered on, so that the locking member 31 is separated from the first positioning member 38, so as to facilitate the expansion or contraction of the second shell 24 relative to the first shell 22. In some embodiments, when the comparison value is within the preset range, it indicates that the locking member 31 and the first positioning member 38 are not stuck, and the memory alloy member 32 contracts. At this time, the memory alloy member control circuit 351 sends an electrical signal to the memory alloy member 32, and the comparator 355 does not operate.

[0028] When the comparison value between the resistance value and the resistance change value exceeds the preset range value, the comparator 355 sends a stop signal to the memory alloy component control circuit 351, and the memory alloy component control circuit 351 receives the stop signal and stops sending electrical signals to the memory alloy component 32; if the comparison value between the resistance value and the resistance change value is within the preset range value, the comparator 355 sends a signal to the memory alloy component control circuit 351, and the memory alloy component control circuit 351 receives the signal and continues to send electrical signals to the memory alloy component 32, so that the memory alloy component 32 contracts. Specifically, after the memory alloy component control circuit 351 sends an electrical signal to the memory alloy component 32, the resistance value detection circuit 353 samples the resistance value of the memory alloy component 32 and sends it to the comparator 355. The comparator 355 receives the electrical signal sent by the memory alloy component control circuit 351. The comparator 355 obtains the resistance change value caused by the contraction of the memory alloy component 32 when the locking component 31 and the first positioning component 38 are not stuck according to the electrical signal. The comparator 355 compares the resistance value with the resistance change value to obtain a comparison value. When the comparison value is not within the preset range, it means that the locking component 31 and the first positioning component 38 are stuck to each other, that is, the memory alloy component 32 does not experience spatial contraction. At this time, the comparator 355 A stop signal is sent to the memory alloy component control circuit 351, and the memory alloy component control circuit 351 receives the stop signal and stops sending electrical signals to the memory alloy component 32 to prevent the memory alloy component 32 from being damaged or broken; when the comparison value is within the preset range value, it means that the locking component 31 and the first positioning component 38 are not stuck to each other, that is, the memory alloy component 32 has a spatial contraction phenomenon. At this time, the comparator 355 sends a signal to the memory alloy component control circuit 351, and the memory alloy component control circuit 351 receives the signal and sends an electrical signal to the memory alloy component 32, so that the memory alloy component 32 contracts and drives the locking component 31 to disengage from the first positioning component 38, so that the second shell 24 can move relative to the first shell 22 along the second direction.

[0029] like Figure 4 and Figure 5As shown, the memory alloy member 32 includes a memory alloy wire 322 and a fixing portion 324 connected to the end of the memory alloy wire 322. The fixing portion 324 is used to connect the first housing 22, and the memory alloy wire 322 is connected to the locking member 31 away from the fixing portion 324. The memory alloy wire 322 is electrically connected to the main board 90. In this embodiment, the memory alloy wire 322 is electrically connected to the main board 90 through the fixing portion 324. The memory alloy wire 322 has two crystal structures of austenite and martensite. Austenite is the structure of the memory alloy wire 322 at a higher temperature, and martensite is the structure of the memory alloy wire 322 at a lower temperature. In the process of the memory alloy wire 322 changing from martensite to austenite, the resistivity of the memory alloy wire 322 increases; in the process of the memory alloy wire 322 changing from austenite to martensite, the resistivity of the memory alloy wire 322 decreases. The phase change between austenite and martensite of the memory alloy wire 322 causes the length of the memory alloy wire 322 to change, that is, the memory alloy wire 322 contracts or resets in space. Therefore, when the memory alloy wire 322 is powered on, the memory alloy wire 322 changes from martensite to austenite, causing the length of the memory alloy wire 322 to contract. During the normal movement of the memory alloy wire 322 when it is powered on and contracted, the resistance value of the memory alloy wire 322 changes regularly; after the memory alloy wire 322 is powered off, the memory alloy wire 322 changes from austenite to martensite, causing the length of the memory alloy wire 322 to reset. When the locking piece 31 and the first positioning piece 38 are stuck to each other, the resistance value of the memory alloy wire 322 is sampled in real time by the resistance value detection circuit 353 and sent to the comparator 355. The comparator 355 receives the electrical signal sent by the memory alloy piece control circuit 351. The comparator 355 obtains the resistance change value caused by the contraction of the memory alloy wire 322 when the locking piece 31 and the first positioning piece 38 are not stuck according to the electrical signal. The comparator 355 compares the resistance value with the resistance change value to form a comparison value, and determines whether the comparison value falls within a preset range value, thereby determining whether the locking piece 31 and the first positioning piece 38 are in a stuck state; when the comparison value does not fall within the preset range value, the locking piece 31 and the first positioning piece 38 are stuck, and the comparison The device 355 sends a stop signal to the memory alloy component control circuit 351, and the memory alloy component control circuit 351 receives the stop signal and stops sending electrical signals to the memory alloy component 32, that is, the memory alloy wire 322 and the power supply 40 are powered off to prevent the memory alloy wire 322 from transforming from martensite to austenite, thereby protecting the memory alloy wire 322; when the comparison value falls within the preset range, the locking component 31 and the first positioning component 38 are not stuck, and the memory alloy component control circuit 351 continues to send electrical signals to the memory alloy component 32, that is, the memory alloy wire 322 and the power supply 40 are powered on, and the memory alloy wire 322 transforms from martensite to austenite, so that the locking component 31 is separated from the first positioning component 38 to facilitate the sliding of the second shell 24 relative to the first shell 22.

[0030] The memory alloy wire 322 can be made of, but not limited to, copper-aluminum-nickel alloy or nickel-titanium alloy.

[0031] Please also read Figure 2-Figure 3 and Figure 6-Figure 9 The locking member 31 includes a locking tongue 310, a first positioning member 38 is provided with a locking hole 380, the locking tongue 310 moves along a first direction, and the first positioning member 38 moves along a second direction, and the first direction intersects with the second direction; preferably, the first direction (i.e., along the Y-axis direction) and the second direction (i.e., along the X-axis direction) are perpendicular to each other. When the second housing 24 and the first housing 22 need to be positioned with each other, the locking tongue 310 is inserted into the locking hole 380, and the memory alloy component control circuit 351 stops sending electrical signals to the memory alloy component 32, so that the memory alloy component 32 remains in martensite; when the second housing 24 and the first housing 22 need to move with each other, the memory alloy component control circuit 351 sends an electrical signal to the memory alloy component 32, so that the memory alloy component 32 is heated and changes from martensite to austenite and shrinks, so as to drive the locking member 31 to move along the first direction so that the locking tongue 310 is separated from the locking hole 380. The locking member 31 further includes a first connecting portion 312 connected to the locking tongue 310, and the first connecting portion 312 is disposed at an end of the locking tongue 310 away from the locking hole 380. Specifically, the first connecting portion 312 is a first connecting block protruding from the end surface of the locking tongue 310 away from the locking hole 380, and the first connecting block is provided with a first connecting hole 314.

[0032] The locking system 30 further includes a reset member 33 having a pre-elastic force for driving the locking member 31 to move along the first direction so that the locking tongue 310 is inserted into the locking hole 380 of the first positioning member 38. The locking member 31 can move in the first direction (ie, the Y-axis direction) to press the reset member 33. When the lock tongue 310 and the locking hole 380 of the first positioning member 38 are not stuck to each other, the memory alloy member control circuit 351 sends an electrical signal to the memory alloy member 32, and the memory alloy member 32 shrinks due to heat to drive the locking member 31 to move along the first direction (i.e., the Y-axis direction), and the reset member 33 is compressed by the locking member 31, so that the lock tongue 310 is separated from the locking hole 380, and the second shell 24 and the first shell 22 can slide with each other along the second direction (i.e., the X-axis direction) to achieve the mutual expansion or contraction of the second shell 24 and the first shell 22; when the memory alloy member control circuit 351 stops sending electrical signals to the memory alloy member 32, the memory alloy wire 322 is reset, that is, the memory alloy wire 322 is transformed from austenite to martensite and restores its original length, and the reset member 33 is elastically reset and pushes the locking member 31 to reset, so that the lock tongue 310 is inserted into the locking hole 380, thereby realizing the automatic locking between the second shell 24 and the first shell 22 of the electronic device 100, so that the positioning effect of the flexible screen 60 in the unfolded state is better. If the electronic device 100 does not come close to each other in a falling scenario due to the mutual positioning of the second shell 24 and the first shell 22, the flexible screen 60 or the internal structure of the shell 20 is prevented from being damaged. In the process of the lock tongue 310 disengaging from the locking hole 380, after the memory alloy component control circuit 351 sends an electrical signal to the memory alloy component 32, the resistance value detection circuit 353 samples the resistance value of the memory alloy component 32 and sends it to the comparator 355. The comparator 355 receives the electrical signal sent by the memory alloy component control circuit 351. The comparator 355 obtains the resistance change value caused by the contraction of the memory alloy component 32 when the locking component 31 and the first positioning component 38 are not stuck according to the electrical signal. The comparator 355 compares the resistance value with the resistance change value to obtain a comparison value; when the comparison value does not fall within the preset range, When it is within the range, it means that the lock tongue 310 is stuck in the locking hole 380, that is, the memory alloy wire 322 has no spatial contraction phenomenon. At this time, the comparator 355 sends a stop signal to the memory alloy component control circuit 351, and the memory alloy component control circuit 351 receives the stop signal and stops sending electrical signals to the memory alloy component 32 to prevent the memory alloy component 32 from being damaged or broken; when the stuck state of the lock tongue 310 and the first positioning component 38 is eliminated, the memory alloy component control circuit 351 sends an electrical signal to the memory alloy component 32 again, so that the memory alloy component 32 contracts and drives the lock tongue 310 to disengage from the locking hole 380.When the comparison value is within the preset range, it indicates that the lock tongue 310 is not stuck in the locking hole 380, that is, the memory alloy component 32 shrinks. At this time, the comparator 355 sends a signal to the memory alloy component control circuit 351. The memory alloy component control circuit 351 receives the signal and sends an electrical signal to the memory alloy component 32, so that the memory alloy component 32 shrinks and drives the lock tongue 310 to disengage from the locking hole 380, so as to facilitate the movement of the second shell 24 relative to the first shell 22. The stuck means that the contact between the lock tongue 310 and the inner surface of the locking hole 380 generates static friction. When the static friction is large, the lock tongue 310 cannot move along the first direction (i.e., the Y-axis direction) and disengage from the locking hole 380. At this time, the memory alloy wire 322 can no longer shrink the space; the unstuck means that the static friction between the lock tongue 310 and the inner surface of the locking hole 380 is small, and the lock tongue 310 can move along the first direction (i.e., the Y-axis direction) and disengage from the locking hole 380. At this time, the memory alloy wire 322 can shrink the space. In a specific scenario, after the lock tongue 310 is inserted into the locking hole 380, the user holds the housing 20 so that the second housing 24 and the first housing 22 have a tendency to move closer to each other. At this time, the first positioning member 38 and the lock tongue 310 abut against each other, so that there is a large static friction between the lock tongue 310 and the first positioning member 38. The shrinkage of the memory alloy wire 322 cannot drive the lock tongue 310 to disengage from the locking hole 380, that is, a stuck scenario occurs. When the lock tongue 310 is stuck in the locking hole 380, if the memory alloy component control circuit 351 still sends an electrical signal to the memory alloy component 32, the memory alloy wire 322 will be unable to shrink in space and undergo plastic deformation, causing the memory alloy wire 322 to become longer or be broken, thereby damaging the performance of the memory alloy wire 322.

[0033] like Figure 8 and Fig. 9As shown, the locking system 30 further includes a fixing member 34, a locking member 31 is slidably disposed in the fixing member 34 along a first direction, a reset member 33 is disposed between the fixing member 34 and the locking member 31, and the reset member 33 elastically pushes the locking member 31 so that the locking tongue 310 extends out of the fixing member 34. The fixing member 34 is provided with a guide groove 340 along the first direction (i.e., the Y-axis direction), the guide groove 340 passes through the fixing member 34 and faces the end surface of the fixing member 34 to form an outlet 341, the locking member 31 is slidably accommodated in the guide groove 340, and the locking tongue 310 extends out or retracts at the outlet 341 under the drive of the memory alloy member 32. Specifically, the fixing member 34 includes a fixing bar 344, and the guide groove 340 is provided at one end surface of the fixing bar 344 and extends along the Y-axis direction to the other end surface of the fixing bar 344 opposite thereto; the fixing bar 344 can be fixedly connected to the first housing 22 by means of, but not limited to, snap connection, screw connection, adhesive connection or welding; for example, the fixing bar 344 and the first housing 22 are snap-connected by a clamping column and a clamping hole, the clamping column is provided at one of the fixing bar 344 and the first housing 22, and the clamping hole is provided at the other of the fixing bar 344 and the first housing 22. Preferably, a fixing sheet is provided on the outer wall of the fixing bar 344, and the fixing sheet can be snap-connected to the first housing 22 by means of, but not limited to, snap connection, screw connection, adhesive connection or welding; the fixing sheet and the first housing 22 are snap-connected by a clamping column and a clamping hole, the clamping column is provided at one of the fixing sheet and the first housing 22, and the clamping hole is provided at the other of the fixing sheet and the first housing 22. In this embodiment, first fixing holes 348 are respectively provided at opposite ends of the fixing strip 344, and a locking member (such as a screw) passes through the first fixing hole 348 to be positioned in the first housing 22. A through hole 346 communicating with the guide groove 340 is provided at one end of the fixing member 34 away from the outlet 341. Preferably, the through hole 346 is provided at the middle of the end surface of the fixing member 34 away from the outlet 341, and the through hole 346 extends along the Y-axis direction to communicate with the guide groove 340.

[0034] The guide groove 340 may be, but not limited to, a rectangular groove, a circular groove, or a polygonal groove, etc., and the corresponding guide groove 340 of the lock tongue 310 may be, but not limited to, a rectangular block, a circular column, or a polygonal block, etc. In this embodiment, the guide groove 340 is a rectangular groove extending along the Y-axis direction, and the lock tongue 310 is a rectangular block. Preferably, the fixing member 34 is provided with a stop portion 347 on the inner wall of the guide groove 340, and the stop portion 347 is used to stop the locking member 31 from moving toward the end close to the memory alloy member 32. In this embodiment, the stop portion 347 is a stop bar provided on the inner wall of the guide groove 340 close to the through hole 346, and the lock tongue 310 can slide along the Y-axis direction at the end of the guide groove 340 away from the through hole 346 until the end surface of the lock tongue 310 away from the fixing member 34 is stopped at the stop portion 347 (i.e., the stop bar) to prevent the lock tongue 310 from continuing to slide toward the end close to the through hole 346. At this time, the lock tongue 310 is completely accommodated in the fixing bar 344.

[0035] like Figure 8-Figure 9As shown, the locking system 30 further includes a connecting member 36, which is arranged along the first direction (i.e., along the Y-axis direction) through the fixing member 34, one end of the connecting member 36 is connected to the locking member 31, and the other end of the connecting member 36 away from the locking member 31 can extend out of the fixing member 34, the memory alloy member 32 is connected to the connecting member 36, and the reset member 33 is connected between the connecting member 36 and the fixing member 34, and the reset member 33 elastically pushes the connecting member 36 to drive the locking member 31 to reset. The connecting member 36 and the locking member 31 can be fixedly connected by, but not limited to, snap connection, screw connection, adhesive connection, etc., such as the connecting member 36 and the locking member 31 are fixedly connected by the cooperation of a clamping column and a clamping hole, the clamping is provided in one of the connecting member 36 and the locking member 31, and the clamping hole is provided in the other of the connecting member 36 and the locking member 31. In this embodiment, the connecting member 36 includes a guide slide rod 362 and a second connecting portion 363 provided at one end of the guide slide rod 362. The cross-sectional area of ​​the guide slide rod 362 in a direction perpendicular to the axial direction is smaller than the cross-sectional area of ​​the second connecting portion 363 in a direction perpendicular to the axial direction of the guide slide rod 362. The second connecting portion 363 is connected to the locking member 31. The guide slide rod 362 is slidably inserted into the fixing member 34 along the first direction (i.e., the Y-axis direction). The reset member 33 is sleeved on the guide slide rod 362. The opposite ends of the reset member 33 respectively abut against the second connecting portion 363 and the fixing member 34. The memory alloy wire 322 is connected to the second connecting portion 363. The diameter of the guide slide rod 362 is less than or equal to the inner diameter of the through hole 346 of the fixing member 34. The guide slide rod 362 is slidably inserted into the through hole 346, i.e., the guide slide rod 362 is slidably inserted into the through hole 346 along the first direction (i.e., the Y-axis direction). In the present invention, the reset member 33 is a spring sleeved on the guide slide rod 362. In other embodiments, the reset member 33 can be but is not limited to a rubber strip or an elastic plastic strip.

[0036] In this embodiment, a positioning hole 3631 is provided on one side of the second connection part 363 away from one end of the guide slide rod 362, and the first connection part 312 of the locking member 31 can be snapped into the positioning hole 3631 of the second connection part 363; preferably, the second connection part 363 is provided with a second connection hole 3634 along the X-axis direction, and when the first connection part 312 is accommodated in the positioning hole 3631, the first connection hole 314 is directly opposite to the second connection hole 3634. The memory alloy wire 322 is hung on the second connection part 363, and specifically, a positioning groove 3635 is provided on the end surface of the second connection part 363 away from the guide slide rod 362, and the positioning groove 3635 is used to position the memory alloy wire 322.

[0037] The locking system 30 further includes a second positioning member 37, and the end of the memory alloy wire 322 is connected to the second positioning member 37, and the second positioning member 37 is used to be fixedly connected to the first housing 22. Specifically, the fixing portion 324 is fixedly connected to the second positioning member 37, and the fixing portion 324 and the second positioning member 37 can be fixedly connected by, but not limited to, snap connection, screw connection or welding. In this embodiment, the second positioning member 37 is provided with a second fixing hole 372, and a locking member (such as a screw) passes through the second fixing hole 372 and is locked to the first housing 22.

[0038] like Figure 6-Figure 9 As shown, when assembling the locking system 30, the first connecting portion 312 of the locking member 31 is accommodated in the positioning opening 3631 of the second connecting portion 363, so that the first connecting hole 314 and the second connecting hole 3634 are directly opposite, and the locking member (such as a screw) is locked to the first connecting hole 314 and the second connecting hole 3634, so that the locking member 31 is fixedly connected to the connecting member 36; the fixing portion 324 is fixedly connected to the second positioning member 37, and the end of the memory alloy wire 322 away from the fixing portion is passed through the through hole 346 and the guide groove 340 from the end away from the outlet 341 and is positioned in the positioning groove 3635 of the second connecting portion 363; the reset member 33 is sleeved on the guide slide rod 362, and the reset member 33 and the guide slide rod 362 are inserted into the guide groove 340 from the outlet 341, so that the end of the guide slide rod 362 away from the locking member 31 passes through the through hole 346 of the fixing member 34 and is exposed.

[0039] like Figure 1-Figure 2 and Fig.10As shown, the first housing 22 includes a top wall 221, two first end walls 223 respectively arranged at opposite ends of the top wall 221, a first side wall 224 arranged at one side of the top wall 221, and a connecting strip 225 arranged at a side of the top wall 221 away from the first side wall 224. The top wall 221, the two first end walls 223 and the first side wall 224 enclose a first receiving space; the first receiving space is used to receive components such as the second housing 24, the mainboard 90 and the power supply 40. A positioning groove 2210 is provided on the front of the first housing 22, and the positioning area 62 of the flexible screen 60 is received and positioned in the positioning groove 2210. A connecting groove 2240 is provided near the top wall 221 on the first side wall 224, and the connecting groove 2240 is connected to the positioning groove 2210. The opposite ends of the connecting groove 2240 extend along the Y-axis direction to the positions near the two first end walls 223, and the connecting groove 2240 is used to position the side of the flexible screen 60. The first shell 22 has two opposite ends with guide grooves 2230, which extend along the X-axis direction to the first side wall 224. The second shell 24 is slidably connected to the guide grooves 2230. Specifically, the top wall 221 has two opposite ends with guide grooves 2230 between the two first end walls 223. The connecting strip 225 has two opposite ends extending along the Y-axis direction to the two first end walls 223. The fixing member 34 and the second positioning member 37 are connected to the connecting strip 225, so that the fixing member 34 is close to one of the first end walls 223, and the second positioning member 37 is far away from the first end wall 223. Specifically, the side of the connecting strip 225 away from the first side wall 224 is provided with a first fixing part and a second fixing part, that is, the first fixing part is close to one of the first end walls 223, and the second fixing part is far away from the first end wall 223. Preferably, the first fixing part is provided with a first positioning hole, and the second fixing part is provided with a second positioning hole. Preferably, the outer side surface of the first side wall 224 is set as an arc surface.

[0040] The second shell 24 includes a bottom wall 241, two second end walls 243 respectively arranged at opposite ends of the bottom wall 241, and a second side wall 244 arranged at one side of the bottom wall 241; the bottom wall 241, the second side wall 244 and the two second end walls 243 enclose a second receiving space. The outer side surface of the second side wall 244 is set as an arc surface, that is, the outer side surface of the second side wall 244 facing away from the first shell 22 is set as an arc surface, so as to facilitate the sliding and rolling of the support device 50 around the second shell 24. Preferably, a plurality of convex strips 247 are arranged on the outer side surface of the second side wall 244, and the plurality of convex strips 247 are arranged at intervals along the Y-axis direction. The plurality of convex strips 247 can reduce the contact area between the support device 50 and the second shell 24, which is conducive to the sliding and rolling of the support device 50 around the second shell 24. The second shell 24 has two opposite ends with guide bars 2430 extending along the X-axis direction to near the second side wall 244 . The two guide bars 2430 can be slidably accommodated in the two guide grooves 2230 of the first shell 22 , so that the second shell 24 is slidably connected to the first shell 22 along the X-axis direction.

[0041] The first positioning member 38 is disposed in the second receiving space of the second shell 24 near one of the second end walls 243. The locking hole 380 on the first positioning member 38 is away from the second end wall 243 and connected to the second receiving space. In this embodiment, the first positioning member 38 is a positioning bar disposed at one end of the side of the bottom wall 241 facing the second receiving space. The positioning bar extends along the X-axis direction. The positioning bar is provided with a plurality of locking holes 380 along the second direction (X-axis direction). The locking tongue 310 can be selectively inserted into one of the plurality of locking holes 380. The second side wall 244 is provided with stop grooves 2443 at opposite ends of the side facing the second receiving space. The two stop portions 2255 of the first shell 22 are respectively abutted against the two stop grooves 2443 of the second shell 24 to prevent the second shell 24 from continuing to move closer to the first shell 22. Preferably, the outer side surface of the second side wall 244 is configured as an arc surface, and the end surface of the second end wall 243 close to the second side wall 244 is configured as an arc surface to facilitate the sliding of the support device 50 around the second shell 24 .

[0042] The first housing 22 and the second housing 24 are slidably connected by the cooperation of the guide rail 246 and the guide slide groove. The guide rail 246 is provided in one of the first housing 22 and the second housing 24, and the guide slide groove is provided in the other of the first housing 22 and the second housing 24. In this embodiment, the second receiving space of the second housing 24 is provided with a guide rail 246, and the guide rail 246 extends along the X-axis direction; the first receiving space of the first housing 22 is provided with a guide slide groove, and the guide slide groove extends along the X-axis direction. When the first housing 22 and the second housing 24 are assembled in cooperation, the guide rail 246 is slidably connected to the guide slide groove.

[0043] In some embodiments, the second shell 24 and the first shell 22 are slidably connected through the cooperation of a rack and a gear, the rack extends along the X-axis direction, the gear is engaged with the rack, the rack is provided in one of the second shell 24 and the first shell 22, and the gear is provided in the other of the second shell 24 and the first shell 22, and the driving member 80 drives the gear to rotate so that the second shell 24 moves relative to the first shell 22 and moves closer to or away from each other.

[0044] When assembling the electronic device 100, the locking system 30 is installed to the shell 20. Specifically, the fixing member 34 and the second positioning member 37 are respectively attached to the first fixing portion and the second fixing portion of the connecting strip 225, so that the first fixing hole 348 of the fixing member 34 is respectively opposite to the first positioning hole corresponding to the first fixing portion, and the second fixing hole 372 of the second positioning member 37 is respectively opposite to the second positioning hole corresponding to the second fixing portion. A plurality of locking members (such as screws) are provided to pass through the first fixing hole 348 and the second fixing hole 372 and are respectively locked in the corresponding first positioning hole and the second positioning hole, so that the fixing member 34 and the second positioning member 37 are respectively fixedly connected to the connecting strip 225 of the first shell 22. At this time, the memory alloy wire 322 is in a straightened state, and the lock tongue 310 extends out of the fixing member 34 and faces the end surface of one of the first end walls 223; the side of the second housing 24 away from the second side wall 244 is inserted into the first receiving space of the first housing 22, so that the two guide slides 2430 of the second housing 24 are respectively slidably inserted into the two guide grooves 2230, and the guide rail 246 is slidably accommodated in the guide groove of the first housing 22. At this time, the lock tongue 310 can be inserted into the locking hole 380 on the side farthest from the second side wall 244, and the first housing 22 and the second housing 24 are in a fully unfolded state; the mainboard 90 can control the driving member 80 to drive the second housing 24 to slide relative to the first housing 22 along the X-axis direction. When the locking tongue 310 is inserted into the locking hole 380, the second shell 24 and the first shell 22 are in a locked state, and the locked state means that the second shell 24 cannot move relative to the first shell 22; when the locking tongue 310 is disengaged from the locking hole 380, the second shell 24 and the first shell 22 are in an unlocked state; the unlocked state means that the second shell 24 can move relative to the first shell 22 along the X-axis direction.

[0045] In other embodiments, locking systems 30 are respectively provided at opposite ends of the connecting strip 225 of the first shell 22. Specifically, first positioning members 38 are respectively fixedly connected to the opposite ends of the connecting strip 225, and two second positioning members 37 are respectively fixedly connected to the middle of the connecting strip 225. At this time, the memory alloy wire 322 of each locking system 30 is in a straightened state, and the two locking tongues 310 respectively extend out of the two fixing members 34 and face the end surfaces of the two first end walls 223; the two first positioning members 38 are respectively arranged in the second receiving space of the second shell 24 near the two second end walls 243, and the two locking tongues 310 can be respectively inserted into the corresponding locking holes 380. When the two locking tongues 310 are respectively inserted into the locking holes 380 of the two first positioning members 38, the second shell 24 and the first shell 22 are in a locked state, and the second shell 24 cannot move along the X-axis direction relative to the first shell 22; when the two locking tongues 310 are respectively disengaged from the corresponding locking holes 380, the second shell 24 and the first shell 22 are in an unlocked state, and the second shell 24 can move along the X-axis direction relative to the first shell 22.

[0046] like Figure 1 and Figure 2 As shown, the back side of the sliding area 64 of the flexible screen 60 is attached to the front side of the supporting device 50, the positioning area 62 of the flexible screen 60 is accommodated in the positioning groove 2210 of the first shell 22, and the back side of the positioning area 62 is fixedly attached to the front side of the top wall 221, and one side of the flexible screen 60 is snapped into the connecting groove 2240 of the first shell 22; the side of the supporting device 50 facing away from the flexible screen 60 is surrounded by the second shell 24; the side of the supporting device 50 close to the positioning area 62 is connected to the first shell 22, and the side of the supporting device 50 away from the positioning area 62 is slidably connected to the bottom wall 241 of the second shell 24, so that the supporting device 50 and the flexible screen 60 can be slidably surrounded on the second shell 24. At this time, when the power supply 40 is energized through the resistance detection control module 35 and the memory alloy part 32, the memory alloy part 32 shrinks due to heat and drives the locking part 31 to slide in the guide groove 340 of the fixing part 34, so that the locking tongue 310 disengages from the locking hole 380; the reset part 33 is compressed, and the second shell 24 and the first shell 22 are in an unlocked state, and the second shell 24 can move along the X-axis direction relative to the first shell 22. Specifically, when the memory alloy component control circuit 351 sends an electrical signal to the memory alloy component 32, the resistance value detection circuit 353 samples the resistance value of the memory alloy component 32 and sends it to the comparator 355. The comparator 355 receives the electrical signal sent by the memory alloy component control circuit 351. The comparator 355 obtains the resistance change value caused by the contraction of the memory alloy component 32 when the locking component 31 and the first positioning component 38 are not stuck according to the electrical signal. The comparator 355 compares the resistance value with the resistance change value to obtain a comparison value. When the comparison value exceeds the preset range value, it means that the lock tongue 310 and the first positioning component 38 are stuck, and the memory alloy component 32 has not contracted. At this time, the comparator 355 sends a stop signal to the memory alloy component control circuit 3 51, the memory alloy component control circuit 351 receives the stop signal and stops sending electrical signals to the memory alloy component 32, that is, the power supply 40 and the memory alloy component 32 are powered off to prevent the memory alloy component 32 from shrinking and being damaged or broken; when the comparison value is within the preset range value, it means that the lock tongue 310 and the first positioning member 38 are not stuck, and the memory alloy component 32 shrinks. At this time, the comparator 355 sends a signal to the memory alloy component control circuit 351, and the memory alloy component control circuit 351 receives the signal and sends an electrical signal to the memory alloy component 32, that is, the power supply 40 and the memory alloy component 32 are powered on, so that the lock tongue 310 disengages from the locking hole 380, and the reset member 33 is compressed and locked, so as to facilitate the expansion or contraction of the second shell 24 relative to the first shell 22. When the power source 40 stops energizing the memory alloy member 32 , the memory alloy member 32 returns to its original length, the reset member 33 is elastically reset, and the reset member 33 pushes the locking member 31 to move away from the end of the memory alloy member 32 , so that the locking tongue 310 is inserted into the locking hole 380 .

[0047] The shrinkage amount of the memory alloy member 32 along the sliding direction of the locking member 31 is greater than or equal to the displacement amount of the locking member 31 relative to the fixing member 34 .

[0048] Please also read Figure 1-Figure 3 and Fig.12 When the flexible screen 60 of the electronic device 100 needs to be unfolded or curled, the memory alloy component control circuit 351 on the mainboard 90 sends an electrical signal to the memory alloy component 32, and the resistance value detection circuit 353 detects the resistance value of the memory alloy component 32 and sends it to the comparator 355. The comparator 355 receives the electrical signal sent by the memory alloy component control circuit 351. The comparator 355 obtains the resistance change value caused by the contraction of the memory alloy component 32 when the locking component 31 and the first positioning component 38 are not stuck according to the electrical signal. The comparator 355 compares the resistance value with the resistance change value to obtain a comparison value. When the comparison value is within the preset range value, , it means that the locking member 31 and the first positioning member 38 are not stuck, the memory alloy member 32 shrinks, and the memory alloy member control circuit 351 continues to send an electrical signal to the memory alloy member 32, so that the locking tongue 310 disengages from the locking hole 380, and the second shell 24 and the first shell 22 are in an unlocked state; at this time, the mainboard 90 controls the driving member 80 to push or pull back the second shell 24 to slide along the X-axis direction, so that the second shell 24 moves away from or approaches the first shell 22, and the second shell 24 slides relative to the supporting device 50 so that the supporting device 50 is unfolded or curled, so that the supporting device 50 slides around the second shell 24, and the sliding and rolling area 64 is unfolded or curled with the supporting device 50. If the comparison value obtained by the comparator 355 does not fall within the preset range value, the comparator 355 sends a stop signal to the memory alloy component control circuit 351, and the memory alloy component control circuit 351 receives the stop signal and stops sending electrical signals to the memory alloy component 32, thereby protecting the memory alloy wire 322; after eliminating the jamming situation, the memory alloy component control circuit 351 sends electrical signals to the memory alloy component 32 again.

[0049] In one embodiment, the stroke detection device 70 is electrically connected to the main board 90. The stroke detection device 70 can be a distance sensor for detecting the position of the second shell 24 moving relative to the first shell 22; the stroke detection device 70 is used to detect the sliding position of the second shell 24 relative to the first shell 22. When the flexible screen 60 needs to be unfolded, the main board 90 controls the power supply 40 to energize the memory alloy part 32 through the resistance detection control module 35. The memory alloy part 32 shrinks due to heat to drive the locking part 31 to move so that the locking tongue 310 disengages from the locking hole 380; the main board 90 controls the driving part 80 to drive the second shell 24 to slide relative to the first shell 22 so that the second shell 24 and the first shell 22 unfold each other, so that the support device 50 slides around the second shell 24, and the sliding area 64 unfolds with the support device 50. The stroke detection device 70 detects the position of the second shell 24 relative to the first shell 22. When the second shell 24 moves to the position required to be locked relative to the first shell 22, the stroke detection device 70 detects the position of the second shell 24 and calculates the corresponding position of the locking hole 380, and then sends a signal to the main board 90. The main board 90 receives the signal and controls the power supply 40 and the memory alloy part 32 to be powered off through the main board 90, so that the memory alloy wire 322 restores its original length, that is, the memory alloy wire 322 is reset, and the main board 90 controls the driving part 80 to stop driving the second shell 24, that is, the second shell 24 does not move relative to the first shell 22, and the reset part 33 pushes the lock tongue 310 to slide relative to the fixing part 34 until the lock tongue 310 is inserted into the locking hole 380, so that the second shell 24 and the first shell 22 are positioned relative to each other. When the second shell 24 needs to be unfolded again relative to the first shell 22, the mainboard 90 controls the power supply 40 and the memory alloy member 32 to be energized again through the resistance detection control module 35, so that the lock tongue 310 is disengaged from the locking hole 380, and the above process is repeated until the second shell 24 is fully unfolded relative to the first shell 22, and the flexible screen 60 is in a fully unfolded state. When the flexible screen 60 needs to be curled, the mainboard 90 controls the power supply 40 to energize the memory alloy member 32 through the resistance detection control module 35, and the memory alloy wire 322 shrinks due to heat to drive the locking member 31 to move, so that the lock tongue 310 is disengaged from the locking hole 380; the mainboard 90 controls the driving member 80 to drive the second shell 24 to slide relative to the first shell 22 so that the second shell 24 and the first shell 22 are close to each other, so that the support device 50 rolls around the second shell 24, and the sliding area 64 curls with the support device 50.The stroke detection device 70 detects the position of the second housing 24 relative to the first housing 22. When the second housing 24 moves to the position to be locked relative to the first housing 22, the stroke detection device 70 detects the position of the second housing 24 and calculates the corresponding position of the locking hole 380, and then sends a signal to the main board 90. The main board 90 receives the signal and controls the power supply 40 and the memory alloy part 32 to cut off the power through the resistance detection control module 35, so that the memory alloy wire 322 restores its original length. At the same time, the main board 90 controls the driving member 80 to stop driving the second housing 24, and the reset member 33 pushes the lock tongue 310 to move until the lock tongue 310 is inserted into the locking hole 380. When the second housing 24 needs to move closer to the first housing 22 again, the main board 90 controls the power supply 40 and the memory alloy part 32 to energize again through the resistance detection control module 35, so that the lock tongue 310 is separated from the locking hole 380 and unlocked, and the above process is repeated until the second housing 24 is completely retracted relative to the first housing 22 and the flexible screen 60 is in a completely curled state.

[0050] In another embodiment, during the movement of the second housing 24 relative to the first housing 22, the stroke detection device 70 is used to detect the position of the second housing 24 relative to the first housing 22, and calculate the time required for the second housing 24 to move to the locked position relative to the first housing 22, and the stroke detection device 70 sends a signal to the mainboard 90, the mainboard 90 receives the signal and controls the power supply 40 and the memory alloy member 32 to be powered off in advance, the memory alloy member 32 is gradually reset, the reset member 33 pushes the lock tongue 310 to move, and at the same time, the second housing 24 continues to move relative to the first housing 22, when the lock tongue 310 is facing the corresponding locking hole 380, the mainboard 90 controls the driving member 80 to stop driving the second housing 24 to move relative to the first housing 22, the lock tongue 310 is inserted into the locking hole 380, and the second housing 24 is locked with the first housing 22. When the second housing 24 needs to move again relative to the first housing 22, the memory alloy member 32 is powered on again to unlock, and the above process is repeated. The other embodiment can improve the response time of locking the locking system 30.

[0051] like Figure 1-Figure 3 and Figure 10-11 As shown, the present invention also provides a control method of an electronic device 100, the electronic device 100 includes a memory alloy part 32, and the method includes:

[0052] S1: Send an electrical signal to the memory alloy component 32; specifically, the memory alloy component control circuit 351 sends an electrical signal to the memory alloy component 32, and the memory alloy component 32 may be a pulse width modulation signal or direct current.

[0053] S2: Detect the resistance value of the memory alloy member 32; Specifically, the electronic device 100 further includes a memory alloy member control circuit 351 electrically connected to the memory alloy member 32, a resistance value detection circuit 353, and a comparator 355 disposed between the memory alloy member control circuit 351 and the resistance value detection circuit 353. The resistance value detection circuit 353 samples the resistance value of the memory alloy member 32, and the resistance value detection circuit 353 converts the sampled resistance value The memory alloy control circuit 351 sends the electrical signal to the comparator 355, and the comparator 355 receives the electrical signal and obtains the resistance change value generated by the contraction of the memory alloy 32 when the locking member 31 and the first positioning member 38 are not stuck. , the comparator 355 converts the resistance value With the resistance value changing A comparison is performed to obtain a comparison value.

[0054] S3: Compare the resistance value of the memory alloy part 32 with the resistance change value to obtain a comparison value, and determine whether the comparison value exceeds the preset range value; if the comparison value exceeds the preset range value, stop sending electrical signals to the memory alloy part 32, wherein the resistance change value is the resistance change value generated by the contraction of the memory alloy part 32 when it is not stuck. That is, if the comparison value exceeds the preset range value, it means that the locking part 31 and the first positioning part 38 are stuck at this time. At this time, the comparator 355 sends a stop signal to the memory alloy part control circuit 351. After receiving the stop signal, the memory alloy part control circuit 351 stops sending electrical signals to the memory alloy part 32 (that is, stops energizing), thereby preventing the memory alloy part 32 from being broken or pulled apart, so as to protect the memory alloy part 32.

[0055] If the comparison value is within the preset range, an electrical signal is sent to the memory alloy member 32. That is, if the comparison value is within the preset range, it means that the locking member 31 and the first positioning member 38 are not stuck at this time. At this time, the comparator 355 sends a signal to the memory alloy member control circuit 351. After receiving the signal, the memory alloy member control circuit 351 sends an electrical signal to the memory alloy member 32 (i.e., energizes it), so that the memory alloy member 32 contracts and drives the locking member 31 to move along the first direction, so that the lock tongue 310 is separated from the locking hole 380.

[0056] In this embodiment, the electrical signal received by the memory alloy member 32 is sent to the memory alloy member 32 through the memory alloy member control circuit 351, and the resistance value of the memory alloy member 32 is obtained by sampling through the resistance value detection circuit 353. The resistance change value is obtained by the comparator 355 according to the electrical signal sent by the memory alloy control circuit 351 when the memory alloy member 32 contracts in the unstuck state. Specifically, the resistance value sampled by the resistance value detection circuit 353 is The comparator 355 receives the electrical signal sent by the memory alloy control circuit 351 to the memory alloy 32, and the comparator 355 generates a resistance change value. Or the comparator 355 is preset with a resistance change value , comparator 355 converts the resistance value With the resistance change value A comparison value is obtained by comparison, and the comparator 355 controls the memory alloy component control circuit 351 to send an electrical signal to the memory alloy component 32 according to the comparison value.

[0057] That is, the memory alloy control circuit 351 sends electrical signals to the memory alloy 32 and the comparator 355 at the same time, and the resistance value detection circuit 353 samples the resistance value of the memory alloy 32. The comparator 355 receives the electrical signal sent by the memory alloy control circuit 351 and obtains the resistance change value caused by the contraction of the memory alloy 32 when it is not stuck. , the resistance changes value It refers to the normal resistance change value generated by the memory alloy 32 after receiving the electrical signal sent by the memory alloy control circuit 351. It refers to the actual resistance change value generated by the memory alloy 32 after receiving the electrical signal sent by the memory alloy control circuit 351. The comparator 355 converts the resistance value With the resistance change value A comparison is performed to determine whether the memory alloy part 32 shrinks normally. If the memory alloy part 32 does not shrink normally, it means that the memory alloy part 32 is stuck and cannot shrink. At this time, the comparator 355 sends a stop signal to the memory alloy part control circuit 351. After receiving the stop signal, the memory alloy part control circuit 351 stops sending electrical signals to the memory alloy part 32.

[0058] When the resistance value With the resistance change value When the comparison value exceeds the preset range value, the comparator 355 sends a stop signal to the memory alloy component control circuit 351. The memory alloy component control circuit 351 receives the stop signal and stops sending electrical signals to the memory alloy component 32, that is, stops energizing the memory alloy component 32. The memory alloy component 32 will not shrink, which can prevent the memory alloy wire 322 from being damaged or broken.

[0059] The locking system 30 of the electronic device 100 of the present invention can prevent the memory alloy part 32 from being broken or pulled apart. When the lock tongue 310 is stuck in the locking hole 380 and cannot be separated from the locking hole 380, the comparator 355 sends a stop signal to the memory alloy part control circuit 351. The memory alloy part control circuit 351 receives the stop signal and stops sending electrical signals to the memory alloy part 32 to prevent the memory alloy part 32 from being broken or pulled apart due to the inability to shrink in space. Secondly, the mainboard 90 controls the driving part 80 to drive the second shell 24 to move relative to the first shell 22 to realize the automatic expansion or contraction of the shell 20. The sliding area 64 of the flexible screen 60 is automatically expanded or curled with the second shell 24, which is easy to use. After the sliding area 64 is expanded, the display surface of the flexible screen 60 can be increased, which is convenient for users. In use, the sliding area 64 can reduce the size of the electronic device 100 after curling, making it convenient for users to carry; in addition, after the second shell 24 is unfolded relative to the first shell 22, it is automatically locked through the locking system 30 to prevent the second shell 24 from moving relative to the first shell 22. When the electronic device 100 falls, the second shell 24 can be prevented from moving relative to the first shell 22, which can effectively protect the electronic device 100 as a whole, prevent the loss of the flexible screen 60 and damage to the mechanism inside the shell 20; secondly, the locking system 30 realizes automatic unlocking or automatic locking by energizing the memory alloy part 32 or de-energizing the power to realize automatic locking, the logic is simple, and can realize multi-level locking or unlocking; in addition, the locking system 30 is light in weight and small in size, and occupies little internal space of the shell 20, which is convenient for the layout of other components.

[0060] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. An electronic device, characterized in that: The electronic device comprises a locking member movable in a first direction, a memory alloy member connected to the locking member, a first positioning member movable in a second direction, a reset member, a fixing member, and a resistance detection control module; the locking member comprises a lock tongue, the resistance detection control module comprises a memory alloy member control circuit electrically connected to the memory alloy member, a resistance value detection circuit electrically connected to the memory alloy member, and a comparator electrically connected to the memory alloy member control circuit and the resistance value detection circuit, the comparator is preset with a preset range value, after the memory alloy member control circuit sends an electrical signal to the memory alloy member, the resistance value detection circuit samples the resistance value of the memory alloy member and sends it to the comparator, the comparator receives the electrical signal sent by the memory alloy member control circuit, the comparator obtains the resistance change value generated by the contraction of the memory alloy member when the locking member and the first positioning member are not stuck according to the electrical signal, the comparator compares the resistance value with the resistance change value to obtain a comparison value, and determines whether the comparison value exceeds the preset range value; The locking member is slidably disposed in the fixing member along the first direction, the resetting member is disposed between the fixing member and the locking member, and the resetting member elastically pushes the locking member so that the locking tongue extends out of the fixing member.

2. The electronic device according to claim 1, characterized in that: When the comparison value exceeds the preset range value, the comparator sends a stop signal to the memory alloy component control circuit, and the memory alloy component control circuit receives the stop signal and stops sending electrical signals to the memory alloy component; when the comparison value is within the preset range value, the comparator sends a signal to the memory alloy component control circuit, and the memory alloy component control circuit receives the signal and continues to send electrical signals to the memory alloy component.

3. The electronic device according to claim 1, characterized in that: The first positioning member is provided with a locking hole, the locking tongue moves along the first direction, the first positioning member moves along the second direction, and the first direction intersects with the second direction; when the locking tongue needs to be inserted into the locking hole, the memory alloy component control circuit stops sending the electrical signal to the memory alloy component, and when the locking tongue needs to be separated from the locking hole, the memory alloy component control circuit sends the electrical signal to the memory alloy component.

4. The electronic device according to claim 3, characterized in that: The reset member has a pre-elastic force for driving the locking member to move along a first direction so that the locking tongue can be inserted into the locking hole.

5. The electronic device according to claim 1, characterized in that: The electronic device also includes a connecting member, which is slidably inserted into the fixing member along the first direction, one end of the connecting member is connected to the locking member, the memory alloy member is connected to the connecting member, and the reset member is located between the connecting member and the fixing member.

6. The electronic device according to claim 5, characterized in that: The connecting member includes a guide slide rod and a connecting portion arranged at one end of the guide slide rod, the connecting portion is connected to the locking member, the guide slide rod is slidably inserted into the fixing member along the first direction, the reset member is sleeved on the guide slide rod, and the opposite ends of the reset member respectively abut against the connecting portion and the fixing member, and the memory alloy member is connected to the connecting portion.

7. The electronic device according to claim 6, characterized in that: The electronic device further comprises a second positioning member, the memory alloy member comprises a memory alloy wire, the memory alloy wire is hung on the connecting portion, and an end of the memory alloy wire is connected to the second positioning member.

8. The electronic device according to claim 1, characterized in that: The electronic device also includes a shell, which includes a first shell and a second shell, the second shell is movably connected to the first shell along the second direction, the locking member is movably arranged on the first shell along the first direction, and the first positioning member is arranged on the second shell.

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