WO2024045773A1

WO2024045773A1 - Self-locking mechanism and electronic device

Info

Publication number: WO2024045773A1
Application number: PCT/CN2023/100635
Authority: WO
Inventors: 马强
Original assignee: Oppo广东移动通信有限公司
Priority date: 2022-08-31
Filing date: 2023-06-16
Publication date: 2024-03-07
Also published as: CN115589683A

Abstract

The present application provides a self-locking mechanism, comprising: a fixing assembly, a locking assembly and a memory alloy member. The fixing assembly comprises a first fixing member. The locking assembly comprises a first locking member and a first elastic member. The first locking member is movably connected to the first fixing member, the first locking member comprises a first lock bolt, and the first elastic member has an elastic force for driving the first locking member to move and reset relative to the first fixing member. One end of the memory alloy member is connected to the first locking member, and the memory alloy member is used for driving the first locking member to move relative to the first fixing member, so that the first lock bolt extends out or retracts into the first fixing member. The present invention further provides an electronic device provided with the self-locking mechanism.

Description

Self-locking mechanism and electronic equipment

This application claims priority to the patent application filed with the China Patent Office on August 31, 2022, with the application number 202211054405.4 and the application name "Self-locking mechanism, housing and electronic equipment", the entire content of which is incorporated into this application by reference. middle.

Technical field

The present application relates to the technical field of electronic equipment, and in particular to a self-locking mechanism for locking and electronic equipment provided with the self-locking mechanism.

Background technique

With the development and application of flexible screens, electronic devices with variable screen shapes have appeared in related technologies, such as folding screen mobile phones, sliding screen mobile phones, etc. Taking a mobile phone with a sliding screen as an example, a mobile phone with a sliding screen includes two shells that are slidingly connected to each other. A motor is generally used to push the two shells away from or closer to each other, thereby realizing the unfolding or rolling of the sliding screen. However, there is no locking mechanism between the two shells of the sliding roll screen mobile phone in the related art. Therefore, the positioning effect of the sliding roll screen in the unfolded state is poor, and if the sliding roll screen mobile phone is dropped due to the two shells, The bodies quickly move closer to each other under the action of external force, which can easily damage the internal mechanism of the scroll screen or the scroll screen mobile phone.

Contents of the invention

The present application provides a self-locking mechanism and an electronic device provided with the self-locking mechanism.

The present application provides a self-locking mechanism, which includes a fixing component, a locking component and a memory alloy component. The fixing component includes a first fixing component; the locking component includes a first locking component and a first elastic component. A first locking member is movably connected to the first fixing member. The first locking member includes a first lock tongue. The first elastic member has the function of driving the first locking member to move relative to the first fixing member. Elastic force to reset; one end of the memory alloy piece is connected to the first locking piece, and the memory alloy piece is used to drive the first locking piece to move relative to the first fixing piece so that the third A lock tongue extends or contracts from the first fixing part.

This application also provides an electronic device, which includes a housing, a power supply and a motherboard provided in the housing. The housing includes a self-locking mechanism, a first housing and a second housing. The self-locking mechanism includes A fixing component, a locking component and a memory alloy component, the fixing component includes a first fixing component; the locking component includes a first locking component and a first elastic component, the first locking component is movably connected to the third A fixed part, the first locking part includes a first lock tongue, the first elastic part has elastic force to drive the first locking part to move and reset relative to the first fixing part; wherein the memory alloy part One end is connected to the first locking piece, and the memory alloy piece is used to drive the first locking piece to move relative to the first fixing piece, so that the first lock tongue extends or contracts on the second locking piece. A fixing piece; the first housing and the second housing are slidingly connected to each other, the first fixing piece of the self-locking mechanism is connected to the first housing, and the second housing is provided with a third A locking port, the first housing and the second housing have a locked state or an unlocked state; the power supply is electrically connected to the mainboard and the memory alloy piece, and the mainboard is used to control all The power supply is energized or cut off from the memory alloy part to cause the memory alloy part to shrink or reset.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the implementation. Obviously, the drawings in the following description are some implementations of the present application. For ordinary people in the art For technical personnel, other drawings can also be obtained based on these drawings without exerting creative work.

Figure 1 is a schematic three-dimensional structural diagram of an electronic device according to the first embodiment of the present invention;

Figure 2 is a schematic three-dimensional structural view of the housing assembly of the electronic device in Figure 1 in an unfolded state;

Figure 3 is a schematic three-dimensional structural diagram of the housing assembly in Figure 2 from another perspective;

Figure 4 is an exploded schematic view of the three-dimensional structure of the housing assembly in Figure 2;

Figure 5 is an exploded schematic diagram of the three-dimensional structure of the housing assembly in Figure 3;

Figure 6 is a further three-dimensional structural exploded view of the housing assembly in Figure 4;

Figure 7 is a further three-dimensional structural exploded view of the housing assembly in Figure 5;

Figure 8 is an enlarged view of the self-locking mechanism in Figure 4;

Figure 9 is an enlarged view of the self-locking mechanism in Figure 5;

Figure 10 is an exploded schematic diagram of the three-dimensional structure of the self-locking mechanism in Figure 8;

Figure 11 is an exploded schematic view of the self-locking mechanism in Figure 8 from another perspective;

Figure 12 is a partial perspective cross-sectional view of the self-locking mechanism in Figure 8;

Figure 13 is a partial perspective cross-sectional view of the self-locking mechanism in Figure 9;

Figure 14 is a partial perspective cross-sectional view of the housing assembly in Figure 2;

Figure 15 is a schematic three-dimensional structural view of the housing assembly in Figure 2 in one of its contracted states;

Figure 16 is a schematic three-dimensional structural view of the housing assembly in Figure 2 in another contracted state;

Figure 17 is a schematic three-dimensional structural diagram of the housing assembly in an unfolded state in the second embodiment of the present invention;

Figure 18 is an enlarged schematic diagram of part XVIII in Figure 17;

Figure 19 is a schematic three-dimensional structural diagram of the housing assembly in the unfolded state in the third embodiment of the present invention;

Figure 20 is an exploded schematic view of the three-dimensional structure of the housing assembly in Figure 19;

Figure 21 is an enlarged view of the three-dimensional structure of the self-locking mechanism in Figure 20;

Figure 22 is a schematic three-dimensional structural diagram of the self-locking mechanism in Figure 21 from another perspective;

Figure 23 is an exploded schematic diagram of the partial structure of the self-locking mechanism in Figure 21;

Figure 24 is an exploded schematic diagram of the partial structure of the self-locking mechanism in Figure 22;

Figure 25 is a partial perspective cross-sectional view of the housing assembly in Figure 19;

Figure 26 is a schematic three-dimensional structural diagram of the housing assembly in the unfolded state in the fourth embodiment of the present invention;

Figure 27 is an enlarged schematic diagram of part XXVII in Figure 26.

Main label description:
100. Electronic equipment; 20. Housing; 22. First housing; 221. Top wall; 223. First end wall; 2230. Guide groove; 224. First side wall; 225. Connecting strip; 2251. First Fixing hole; 2253, second fixing hole; 2255, stopper; 227, first receiving space; 2210, positioning slot; 2240, connecting slot; 228, guide rail; 24, second housing; 241, bottom wall; 2411 , the first positioning bar; 2412, the second positioning bar; 2414, the first locking port; 2415, the second locking port; 2416, the positioning bar; 243, the second end wall; 2430, the guide slider; 244, the Two side walls; 246. Guide chute; 247. Second receiving space; 26. Self-locking mechanism; 27. Fixing component; 272. First fixing piece; 2720. First guide chute; 2721, first outlet; 2723, first stop portion; 2724, first fixed bar; 2725, first fixed piece; 2726, first fixed post; 2727, first through hole; 2728, The first through hole; 274, the second fixing piece; 2740, the second guide chute; 2741, the second outlet; 2743, the second stop portion; 2744, the second fixing bar; 2745, the second fixing piece; 2748, Second through hole; 2766, second fixing post; 2747, second through hole; 28, locking component; 282, first fastener; 2821, first lock tongue; 2823, first guide slider; 2825, first A connection part; 2826, the first connection hole; 284, the second fastener; 2841, the second lock tongue; 2843, the second slide guide; 2845, the second connection part; 2846, the second connection hole; 285, the second An elastic member; 286, the second elastic member; 287, the first moving member; 2870, the first rectangular block; 2871, the first fixing hole; 2872, the first clamping hole; 2874, the first clamping post; 2875, the first Catch block; 2876, first locking hole; 2877, first receiving slot; 288, second moving member; 2880, second rectangular block; 2881, second fixing hole; 2882, second clamping hole; 2884, second Clamping column; 2885, second clamping block; 2886, second locking hole; 2887, second receiving slot; 29, memory alloy piece; 291, memory metal wire; 293, first positioning part; 2931, first positioning piece ; 2933. First connecting piece; 2932. First fixing hole; 2934. First fastener; 295. Second positioning part; 2951. Second positioning piece; 2952. Second fixing hole; 2953. Second connecting piece; 2954. Second locking member; 296. Third elastic member; 297. Positioning block; 30. Main board; 40. Power supply; 50. Support device; 60. Flexible screen; 62. Positioning area; 64. Sliding area; 70. Stroke detection equipment; 80. Driving parts.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

In addition, the following description of the embodiments refers to the accompanying figures to illustrate specific embodiments in which the present application may be implemented. The directional terms mentioned in this application, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., are only Reference is made to the direction of the attached drawings. Therefore, the directional terms used are for the purpose of better and clearer description and understanding of the present application, and are not intended to indicate or imply that the device or component referred to must have a specific orientation or be in a specific orientation. construction and operation, and therefore should not be construed as limitations on this application. The term "natural state" refers to a state in which a device or component is not subject to external forces, such as tension or pressure.

In the description of this application, it should be noted that, unless otherwise explicitly stated and limited, the terms "installed", "connected", "connected", and "disposed on..." should be understood in a broad sense. For example, it can be A fixed connection can also be a detachable connection or an integral connection; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood on a case-by-case basis.

On the one hand, the present application provides a self-locking mechanism. The self-locking mechanism includes a fixing component, a locking component and a memory alloy component. The fixing component includes a first fixing component, and the locking component includes a first locking component and a memory alloy component. A first elastic member, the first locking member is movably connected to the first fixing member, the first locking member includes a first lock tongue, the first elastic member has the function of driving the first locking member relative to The elastic force of the first fixing part to move and reset; one end of the memory alloy part is connected to the first locking part, and the memory alloy part is used to drive the first locking part relative to the first fixing part Move to make the first lock tongue extend or contract from the first fixing part.

Optionally, the fixing component further includes a second fixing component, the locking component further includes a second locking component and a second elastic component, the second locking component is movably connected to the second fixing component, so The second locking member includes a second lock tongue, the second elastic member has an elastic force that drives the second locking member to move and reset relative to the second fixing member, and the opposite ends of the memory alloy member are respectively connected to the The first locking part and the second locking part, the memory alloy part is also used to drive the second locking part to move relative to the second fixing part, so that the The second lock tongue extends or contracts from the second fixing member.

Optionally, the memory alloy piece includes a memory metal wire. Opposite ends of the memory metal wire are respectively connected to the first locking member and the second locking member. The contraction or reset of the memory metal wire The first locking member and the second locking member are moved closer to or farther away from each other.

Optionally, the shrinkage amount of the memory wire in the first direction is equal to the displacement amount of the first locking fixation relative to the first fixing part along the first direction and the displacement amount of the second locking fixation relative to the first fixing part. The sum of the displacements of the second fixing member along the first direction.

Optionally, the first fixed member is provided with a first guide groove along the first direction, and the first guide groove penetrates the end surface of the first fixed member facing away from the memory wire to form a first outlet, The first locking piece is slidably accommodated in the first guide groove, and the first lock tongue extends or contracts at the first outlet driven by the memory wire; the second fixing The component is provided with a second guide groove along the first direction. The second guide groove penetrates the end surface of the second fixing component away from the memory wire to form a second outlet. The second locking member slides to accommodate Placed in the second guide chute, the second lock tongue extends or contracts from the second outlet driven by the memory wire.

Optionally, the memory alloy piece further includes a first positioning part and a second positioning part. The first positioning part and the second positioning part are respectively connected to opposite ends of the memory metal wire. The first positioning part The positioning part is detachably connected to the first locking member, and the second positioning part is detachably connected to the second locking member.

Optionally, the first locking member further includes a first slide bar slidably connected to the first fixing member, one end of the first slide bar is connected to the first lock tongue, and the first slide bar is connected to the first lock tongue. An elastic member is sleeved on the first slide bar, and the opposite ends of the first elastic member respectively resist the first lock tongue and the first fixing member; the second locking member also includes a sliding a second slide bar connected to the second fixed member, one end of the second slide bar connected to the second lock tongue, the second elastic member sleeved on the second slide bar, Opposite ends of the second elastic member respectively resist the second lock tongue and the second fixing member.

Optionally, the first locking member further includes a first connecting portion connected to an end of the first slide bar facing away from the first lock tongue, and the first connecting portion extends out of the first fixing member. The second locking member further includes a second connecting portion connected to an end of the second slide bar facing away from the second lock tongue. The second connecting portion extends out of the second fixing member. The locking component further It includes a first moving part and a second moving part, the first moving part is connected to the first connecting part, the second moving part is connected to the second connecting part, and the first positioning part is detachable. Connected to the first moving part, the second positioning part is detachably connected to the second moving part, and the first moving part is driven by the first spring part to push against the first fixed part. component, the second moving component is driven by the second elastic component to push against the second fixing component.

Optionally, an end of the first fixing member facing away from the first outlet is provided with a first through hole communicating with the first guide slide groove, and the first guide slide bar is slidably passed through the first guide slide groove. a through hole, the first moving part is provided with a first fixing hole corresponding to the first through hole, the first connecting part is connected to the first fixing hole; the second fixing part is away from the second One end of the outlet is provided with a second through hole connected to the second guide slide groove, the second guide slide bar is slidably disposed in the second through hole, and the second moving member corresponds to the second slide guide. The through hole is provided with a second fixing hole, and the second connecting part is connected to the second fixing hole.

Optionally, the first fixing member is provided with a first stop portion on the inner wall of the first guide chute, and the first stop portion is used to stop the first locking member from approaching the memory. One end of the metal wire moves; the second fixing member is provided with a second stop portion on the inner wall of the second guide chute, and the second stop portion is used to stop the second locking member from approaching the position. One end of the memory wire moves.

Optionally, the locking assembly further includes two third elastic members, wherein opposite ends of one of the third elastic members are respectively connected to one end of the memory wire and the first locking member, and the other third elastic member is connected to one end of the memory wire and the first locking member. The opposite ends of the third elastic member are respectively connected to the opposite ends of the memory metal wire. One end is fixed with the second lock.

Optionally, the displacement amount of the first locking member relative to the first fixing member in the first direction and the displacement of the second locking member relative to the second fixing member in the first direction. The sum of the amounts is less than the shrinkage amount of the memory alloy piece.

Optionally, the elastic coefficient of the third elastic member is greater than the elastic coefficient of the first elastic member and the elastic coefficient of the second elastic member.

Optionally, the first lock tongue and the second lock tongue can respectively extend out of the first fixing part and the second fixing part simultaneously, or the first lock tongue and the second lock tongue can It can shrink to the second fixing part and the second fixing part synchronously respectively.

On the other hand, the present application provides an electronic device. The electronic device includes a casing, a power supply and a motherboard provided in the casing. The casing includes a self-locking mechanism, a first casing and a second casing. The self-locking mechanism includes a fixing component, a locking component and a memory alloy component. The fixing component includes a first fixing component; the locking component includes a first locking component and a first elastic component, and the first locking component moves Ground is connected to the first fixing member, the first locking member includes a first lock tongue, and the first elastic member has an elastic force that drives the first locking member to move and reset relative to the first fixing member; One end of the memory alloy piece is connected to the first locking piece, and the memory alloy piece is used to drive the first locking piece to move relative to the first fixing piece so that the first lock tongue extends Or shrink in the first fixing part; the first housing and the second housing are slidingly connected to each other, the first fixing part of the self-locking mechanism is connected to the first housing, and the third The two housings are provided with a first locking port, and there is a locked state or an unlocked state between the first housing and the second housing; the power supply is electrically connected to the motherboard and the memory alloy piece, so The mainboard is used to control the power supply and the memory alloy part to be powered on or off, so that the memory alloy part shrinks or resets.

Optionally, when the power supply is energized with the memory alloy piece, the memory alloy piece shrinks to drive the first lock bolt away from the first locking opening; when the power source is connected with the memory alloy piece When the power is turned off, the memory alloy piece is reset so that the first lock tongue is inserted into the first locking port.

Optionally, the electronic device further includes a stroke detection device electrically connected to the motherboard. The stroke detection device is used to detect the sliding position of the second housing relative to the first housing. When the second housing slides relative to the first housing to the required locking position, the stroke detection device detects the position of the second housing and sends a signal to the mainboard, and the mainboard receives the signal and controls all The power supply and the memory alloy part are cut off, the memory alloy part is reset, and the first elastic part pushes the first lock tongue to move until the first lock tongue is inserted into the first locking port.

Optionally, the electronic device further includes a stroke detection device electrically connected to the motherboard, the stroke detection device is used to detect the position of the second housing relative to the first housing, and calculate The time required for the second housing to move to the locked position relative to the first housing, and the stroke detection device sends a signal to the motherboard, which receives the signal and controls the power supply and the memory When the alloy part is powered off, the memory alloy part is reset, and the first elastic part pushes the first lock tongue to move. At the same time, the second housing continues to move relative to the first housing until the When the first locking tongue faces the first locking opening, the first locking tongue is inserted into the first locking opening.

Optionally, the electronic device further includes a driving member electrically connected to the mainboard, and the mainboard controls the driving member to drive the second housing to move relative to the first housing.

Optionally, the second housing is provided with a plurality of first locking openings along a second direction, and the second direction is parallel to the sliding direction of the second housing relative to the first housing. , the first lock tongue can be selectively inserted into one of the plurality of first locking openings.

Please refer to FIGS. 1 to 7 together. The electronic device 100 according to the first embodiment of the present invention can be applied to mobile phones, tablet computers, notebook computers, monitors, smart watches, portable multimedia players, mobile medical devices, etc. In this embodiment, Take a mobile phone as an example for detailed explanation. The electronic device 100 in this embodiment includes a casing 20, a motherboard 30 located in the casing 20, a power supply 40, a supporting device 50, a flexible screen 60, a stroke detection device 70 and a driver 80; the casing 20 may be but not It is limited to telescopic shells or folding shells, etc., and the telescopic shell is taken as an example for detailed description in this embodiment. Specifically, the housing 20 includes a first housing 22 , a second housing 24 and a self-locking mechanism 26 . The second housing 24 and the first housing 22 are slidingly connected to each other along the X-axis direction, so that the first housing 22 The main board 30 and the second housing 24 can contract or expand each other; the main board 30 is electrically connected to the power supply 40, the flexible screen 60, the stroke detection device 70 and the driving member 80. The power supply 40 is used to provide power to the main board 30, the flexible screen 60 and the stroke detection device. 70 and the driving member 80 supply power; the supporting device 50 has a hinge-like structure, one side of the supporting device 50 is connected to the first housing 22, and the supporting device 50 is wound around the second housing 20; the flexible screen 60 includes a positioning area 62 and a There is a sliding roll area 64 on one side of the positioning area 62. The positioning area 62 is fixed on the front side of the first housing 22. The sliding roll area 64 is attached to the surface of the supporting device 50 facing away from the second housing 24. That is, the sliding roll area 64 is attached to the surface of the supporting device 50 facing away from the second housing 24. on the front side of the supporting device 50 of the housing 20 . When the first housing 22 and the second housing 24 slide relative to each other along the X-axis direction, the supporting device 50 slides around the second housing 24 , and the sliding area 64 slides around the second housing 24 along with the supporting device 50 . Specifically, when the mainboard 30 controls the driving member 80 to drive the second housing 24 to extend in the X-axis direction relative to the first housing 22, that is, the second housing 24 moves away from the first housing 22 in the X-axis direction. The first housing 22 and the second housing 24 drive the support device 50 to slide relative to the second housing 24 to expand, and the sliding roll area 64 expands synchronously with the support device 50, so that the display area of the flexible screen 60 increases; when the motherboard 30 When the control driver 80 drives the second housing 24 to shrink relative to the first housing 22 along the X-axis direction, that is, the second housing 24 moves relative to the first housing 22 along the X-axis direction and approaches the first housing 22. The second housing 24 drives the supporting device 50 to slide and curl relative to the second housing 24. The sliding rolling area 64 curls synchronously with the supporting device 50, so that the volume of the housing 20 is reduced. When the sliding roll area 64 is unfolded, the display surface of the flexible screen 60 can be increased, making it convenient for the user to use; when the sliding roll area 64 is rolled, the electronic device 100 can be reduced in size, making it easier to carry. During the movement of the second housing 24 relative to the first housing 22 , the mainboard 30 can control the self-locking mechanism 26 to automatically lock between the second housing 24 and the first housing 22 according to the stroke detection device 70 , so that the second housing 24 and the first housing 22 are positioned relative to each other.

As shown in Figures 1-5 and 8-11, the self-locking mechanism 26 includes a fixing component 27, a locking component 28 and a memory alloy component 29. The fixing component 27 includes a first fixing component 272 and a second fixing component 274. The locking component 28 includes a first locking member 282, a second locking member 284, a first elastic member 285 and a second elastic member 286. The first locking member 282 is movably connected to the first locking member 282 along the first direction (ie, the Y-axis direction). The fixing member 272 and the second locking member 284 are movably connected to the second fixing member 274 along the first direction (ie, the Y-axis direction). The first locking member 282 includes a first lock tongue 2821 and the second locking member 284 includes a second lock. Tongue 2841, the first elastic member 285 has an elastic force that drives the first locking member 282 to return relative to the first fixing member 272. This elastic force drives the first locking member 282 to move in the first direction (ie, the Y-axis direction), so that the first The locking tongue 2821 is positioned between the second housing 24 and the first housing 22; the second elastic member 286 has the function of driving the second locking member 284 to move in the first direction (ie, the Y-axis direction), so that the second locking tongue 2841 It is positioned between the second housing 24 and the first housing 22 so that the second housing 24 and the first housing 22 are relatively positioned. Opposite ends of the memory alloy part 29 are connected to the first locking part 282 and the second locking part 284 respectively. The memory alloy part 29 is used to drive the first locking part 282 to move in the first direction relative to the first fixing part 272 and the second locking part 272 . The fastener 284 moves in the first direction relative to the second fixing part 274, so that the first locking tongue 2821 extends or contracts from the first fixing part 272 and the second locking tongue 2841 extends or contracts from the second fixing part 274. The second housing 24 can move in the second direction (ie, the X-axis direction) relative to the first housing 22. The driving member 80 controls the power supply 40 to power on or off the memory alloy part 29, so that the memory alloy part 29 contracts or resets. The first locking member 282 and the second locking member 284 are driven to move along the first direction (ie, the Y-axis direction), so that the first locking tongue 2821 extends or contracts while the first fixing member 272 and the second locking tongue 2841 extend or shrink. on the second fixing member 274. When the first locking tongue 2821 and the second locking tongue 2841 extend out of the first fixing part 272 and the second fixing part 274 respectively, the first locking tongue 2821 and the second locking tongue 2841 are positioned between the second shell 24 and the first shell. between the bodies 22 to prevent the second housing 24 from moving relative to the first housing 22; when the first locking tongue 2821 and the second locking tongue 2841 respectively shrink to the first fixing member 272 When the second fixing member 274 is connected, the first locking tongue 2821 and the second locking tongue 2841 are separated from the space between the second housing 24 and the first housing 22 , and the second housing 24 can move relative to the first housing 22 .

In the present invention, the front side refers to the side facing the same direction as the light-emitting surface of the flexible screen 60 , and the back side refers to the side opposite to the light-emitting surface of the flexible screen 60 ; the Y-axis direction refers to the first locking member 282 and the second locking member 284 are respectively relative to the sliding direction of the first fixing part 272 and the second fixing part 274, 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, so The second direction is the X-axis direction; the Z-axis direction refers to the direction perpendicular to both the X-axis direction and the Y-axis direction, that is, the Z-axis direction is the thickness direction of the electronic device 100 .

The opposite ends of the memory alloy part 29 of the self-locking mechanism 26 in the present invention are connected to the first locking part 282 and the second locking part 284 respectively. When the mainboard 30 controls the power supply 40 to energize the memory alloy part 29, the memory alloy part 29 is heated. Contraction drives the first locking member 282 and the second locking member 284 to move closer to each other along the first direction (ie, the Y-axis direction). The first elastic member 285 and the second elastic member 286 are respectively moved by the first locking member 282 and the second locking member. 284 is compressed, causing the first locking tongue 2821 and the second locking tongue 2841 to release the positioning of the second housing 24 and the first housing 22; when the mainboard 30 controls the power supply 40 and the memory alloy part 29 to be powered off, the memory alloy part 29 Reset, that is, the memory metal wire 291 returns to its original length, and the first elastic member 285 and the second elastic member 286 respectively elastically reset and push the first locking member 282 and the second locking member 284 away from each other, so that the first lock tongue 2821 and The second lock tongue 2841 positions the second housing 24 and the first housing 22, thereby realizing automatic locking between the second housing 24 and the second housing 22 of the electronic device 100, so that the flexible screen 60 is in the unfolded state. The positioning effect below is better. If the electronic device 100 is in a falling scene because the second housing 24 and the first housing 22 are fixed to each other and will not come close to each other, damage to the flexible screen 60 or the internal mechanism of the housing 20 is prevented.

As shown in Figures 1 to 5, the first housing 22 includes a top wall 221, two first end walls 223 respectively provided at opposite ends of the top wall 221, and a first side wall 224 provided on one side of the top wall 221. And the connecting bar 225 is provided on the 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 form a first receiving space 227; the first receiving space 227 is To store the second housing 24, the motherboard 30, the power supply 40 and other components. 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 positioned in the positioning groove 2210 . The first side wall 224 is provided with a connecting groove 2240 close to the top wall 221. The connecting groove 2240 is connected with the positioning groove 2210. The opposite ends of the connecting groove 2240 extend to places close to the two first end walls 223 along the Y-axis direction. The connecting groove 2240 Used to position the side of the flexible screen 60. Guide grooves 2230 are provided at opposite ends of the first housing 22 respectively. The guide grooves 2230 extend along the X-axis direction close to the first side wall 224. The second housing 24 is slidably connected to the guide grooves 2230; specifically, the top Guide grooves 2230 are provided between opposite ends of the wall 221 and the two first end walls 223 respectively. Opposite ends of the connecting bar 225 extend respectively to close to the two first end walls 223 along the Y-axis direction. The first fixing part 272 and the second fixing part 274 are respectively connected to the opposite ends of the connecting bar 225 so that the first fixing part 272 is close to one of the first end walls 223, and the second fixing part 274 is close to the other first end wall 223; specifically, the connecting bar 225 is provided with a first fixing part and a first fixing part at opposite ends of the side facing away from the first side wall 224. Two fixing parts, that is, the first fixing part is close to one of the first end walls 223 and the second fixing part is close to the other first end wall 223; the first fixing part has a first fixing hole 2251, and the second fixing part has a first fixing hole 2251. The second fixing hole 2253. A stopper 2255 is respectively provided between two opposite ends of the connecting bar 225 and the two first end walls 223 . Preferably, the outer surface of the first side wall 224 is an arc surface.

The second housing 24 includes a bottom wall 241, two second end walls 243 respectively provided at opposite ends of the bottom wall 241, and a second side wall 244 provided on one side of the bottom wall 241; the bottom wall 241, the second side wall 244 and the two second end walls 243 form a second receiving space 247 . The outer surface of the second side wall 244 is formed into an arc surface, that is, the outer surface of the second side wall 244 away from the first housing 22 is formed into an arc surface to facilitate the sliding roll of the support device 50 around the second housing 24 . Furthermore, a plurality of protrusions 2441 are provided on the outer surface of the second side wall 244 . The plurality of protrusions 2441 are arranged at intervals along the Y-axis direction. The plurality of protrusions 2441 can reduce the contact between the support device 50 and the second housing 24 The area is conducive to the sliding roll of the supporting device 50 around the second housing 24 . Guide slide bars 2430 are provided at opposite ends of the second housing 24 respectively. The guide slide bars 2430 extend along the X-axis direction to close to the second housing 24 . The two side walls 244 and the two guide slide bars 2430 can be slidably received in the two guide grooves 2230 respectively, so that the second housing 24 and the first housing 22 are slidably connected along the X-axis direction.

The second housing 24 is provided with a first locking opening 2414 and a second locking opening 2415. When the first locking tongue 2821 of the first locking part 282 and the second locking tongue 2841 of the second locking part 284 are inserted into the first locking part respectively, When the opening 2414 and the second locking opening 2415 are secured, the second housing 24 and the first housing 22 are in a locked state. The locked state means that the second housing 24 cannot move relative to the first housing 22; When the first locking tongue 2821 of a locking member 282 and the second locking tongue 2841 of the second locking member 284 are respectively separated from the first locking opening 2414 and the second locking opening 2415, the second housing 24 and the first housing 22 In the unlocked state, the unlocked state means that the second housing 24 can move in the X-axis direction relative to the first housing 22 . In this embodiment, first positioning bars 2411 and second positioning bars 2412 are respectively provided at opposite ends of the side of the bottom wall 241 facing the second receiving space 247. The first positioning bars 2411 extend along the X-axis direction, and the second positioning bars 2412 extend along the X-axis direction. 2412 extends along the In the second locking port 2415, the first locking component 282 can be selectively inserted into one of the plurality of first locking ports 2414, and the second locking component 284 can be selectively inserted into one of the plurality of second locking ports 2415. . Specifically, a plurality of first mounting grooves are provided on the side of the first positioning bar 2411 facing the second positioning bar 2412. The plurality of first mounting grooves are arranged along the X-axis direction, and each first mounting groove is connected with a positioning bar. 2416, each positioning bar 2416 and the first positioning bar 2411 form a first locking opening 2414; the side of the second positioning bar 2412 facing the first positioning bar 2411 is provided with a plurality of second installation grooves, and a plurality of second mounting grooves are provided on the side facing the first positioning bar 2411. The installation grooves are arranged along the X-axis direction, and positioning bars 2416 are connected to the second installation grooves. Each positioning bar 2416 and the second positioning bar 2412 form a second locking opening 2415. The positioning bar 2416 and the first positioning bar 2411 can be connected by, but not limited to, snapping, screwing, or gluing. The positioning bar 2416 and the second positioning bar 2412 can be connected by, but not limited to, snapping, screwing, or gluing. Connect by glue or other methods. The second side wall 244 is provided with blocking grooves 2443 at opposite ends of the side facing the second receiving space 247. The two blocking portions 2255 of the first housing 22 are respectively connected with the two blocking grooves of the second housing 24. 2443 to prevent the second housing 24 from continuing to move closer to the first housing 22 . Preferably, the outer surface of the second side wall 244 is provided with an arc surface, and the end surface of the second end wall 243 close to the second side wall 244 is provided with an arc surface to facilitate the sliding roll of the support device 50 around the second housing 24 .

The first housing 22 and the second housing 24 are slidingly connected through the cooperation of the guide rail 228 and the guide slide groove 246. The guide rail 228 is provided in one of the first housing 22 and the second housing 24. 246 is provided on the other one of the first housing 22 and the second housing 24 . In this embodiment, the first receiving space 227 of the first housing 22 is provided with a guide rail 228 extending along the X-axis direction; the second receiving space 247 of the second housing 24 is provided with a guide slide 246. The chute 246 extends along the X-axis direction. When the first housing 22 and the second housing 24 are assembled together, the guide rail 228 is slidably connected to the guide slide groove 246 . Specifically, the guide rail 228 is connected to the second end wall 243 of the first housing 22 , and both guide slide grooves 246 are connected to the second bottom wall 2623 of the second housing 24 .

In some embodiments, the second receiving space 247 of the second housing 24 is provided with a bottom wall 241 , the guide rail 228 extends along the X-axis direction, and the first receiving space 227 of the first housing 22 is provided with a guide slide 246 , when the first housing 22 and the second housing 24 are assembled together, the guide groove 246 is slidably connected to the guide rail 228 .

As shown in Figures 8 to 11, the memory alloy component 29 includes a memory metal wire 291. The opposite ends of the memory metal wire 291 are connected to the first locking member 282 and the second locking member 284 respectively. The shrinkage of the memory metal wire 291 or Resetting causes the first locking member 282 and the second locking member 284 to move closer to or move away from each other, so that the first locking tongue 2821 extends or retracts from the first fixing member 272 and the second locking tongue 2841 extends or retracts from the second fixing member. Item 274. Specifically, when the memory wire 291 is powered on, the memory wire 291 contracts to drive the first locking member 282 and the second locking member 284 to move closer to each other, so that the first locking tongue 2821 and the second locking tongue 2841 are separated from the first locking tongue 2821 and the second locking tongue 2841 respectively. The locking port 2414 and the second locking port 2415, the first elastic member 285 and the second elastic member 286 are respectively compressed by the first locking member 282 and the second locking member 284, and the second housing 24 can be relative to the first housing. 22 moves along the The fasteners 284 are spaced apart from each other so that The first locking tongue 2821 and the second locking tongue 2841 are respectively inserted into the first locking opening 2414 and the second locking opening 2415. The second housing 24 cannot move relative to the first housing 22, that is, the second housing 24 is relatively The first housing 22 cannot move in the X-axis direction. Preferably, when the memory metal wire 291 is powered on, the shrinkage of the memory metal wire 291 drives the first lock tongue 2821 and the second lock tongue 2841 to shrink synchronously on the first fixing part 272 and the second fixing part 274 respectively; When the wire 291 is disconnected from the power supply, the memory wire 291 returns to its original length, causing the first locking tongue 2821 and the second locking tongue 2841 to simultaneously extend out of the first fixing part 272 and the second fixing part 274 respectively.

The sum of the displacement of the first locking member 282 relative to the first fixing member 272 along the first direction (ie, the Y-axis direction) and the sliding displacement of the second locking member 284 relative to the second fixing member 274 in the first direction. Slightly greater than or equal to the shrinkage amount of the memory wire 291 in the first direction (ie, the Y-axis direction) to prevent the memory wire 291 from being damaged or broken. In this embodiment, the shrinkage amount of the memory wire 291 in the first direction (ie, the Y-axis direction) is equal to the displacement amount of the first locking member 282 sliding relative to the first fixing member 272 in the first direction (ie, the Y-axis direction). and the sum of the sliding displacement of the second lock fixing 284 relative to the second fixing member 274 along the first direction (ie, the Y-axis direction).

As shown in FIGS. 10 and 11 , the first fixed member 272 is provided with a first guide groove 2720 along the first direction (ie, the Y-axis direction). The first guide groove 2720 penetrates the first fixed member 272 away from the memory wire 291 The end surface of the first outlet 2721 is formed, the first locking member 282 is slidably received in the first guide groove 2720, and the first lock tongue 2821 extends or contracts from the first outlet 2721 driven by the memory wire 291; The two fixed parts 274 are provided with a second guide groove 2740 along the first direction (ie, the Y-axis direction). The second guide groove 2740 penetrates the end surface of the second fixed part 274 away from the memory wire 291 to form a second outlet 2741. The two locking parts 284 are slidably received in the second guide slide groove 2740, and the second lock tongue 2841 extends or contracts from the second outlet 2741 driven by the memory wire 291. Specifically, the first fixing member 272 includes a first fixing bar 2724 and a first fixing piece 2725 provided on the outer wall of the first fixing bar 2724. The first guide groove 2720 is provided on one end surface of the first fixing bar 2724 and along Y The axial direction extends to the opposite end surface close to the first fixing bar 2724; the first fixing piece 2725 can be connected to the first fixing part of the first housing 22 by, but not limited to, snapping, screwing, gluing or welding; in this implementation In this example, the first fixing piece 2725 is provided with a first fixing post 2726, and the first fixing post 2726 is used to snap into the first fixing hole 2251 of the first fixing part; further, the first fixing piece 2725 is provided with a first fixing post 2726. Through hole 2727, the fastener passes through the first through hole 2727 and is connected to the first fixing part. The second fixing member 274 includes a second fixing bar 2744 and a second fixing piece 2745 provided on the outer wall of the second fixing bar 2744. The second guide groove 2740 is provided on one end surface of the second fixing bar 2744 and extends along the Y-axis direction. to the other end surface opposite to the second fixing bar 2744; the second fixing piece 2745 can be connected to the second fixing part of the first housing 22 through but not limited to snapping, screwing, gluing or welding; in this embodiment, The second fixing piece 2745 is provided with a second fixing post 2746, and the second fixing post 2746 is used to snap into the second fixing hole 2253 of the second fixing part; further, the second fixing piece 2745 is provided with a second through hole 2747. , the fastener passes through the second through hole 2747 and is connected to the second fixing part. An end of the first fixing member 272 facing away from the first outlet 2721 is provided with a first through hole 2728 communicating with the first guide slot 2720. Specifically, the first through hole 2728 is provided at an end surface of the first fixing member 272 facing away from the first outlet 2721. in the middle, and the first through hole 2728 extends along the Y-axis direction and communicates with the first guide chute 2720; the end of the second fixing member 274 away from the second outlet 2741 is provided with a second through hole 2748 that communicates with the second guide chute 2740. Specifically, the second through hole 2748 is provided in the middle of the end surface of the second fixing member 274 away from the second outlet 2741, and the second through hole 2748 extends along the Y-axis direction to communicate with the second guide slide groove 2740.

The first locking member 282 also includes a first slide bar 2823 slidably connected to the first fixing member 272. One end of the first slide bar 2823 is connected to the first lock tongue 2821, and the first elastic member 285 is sleeved on the first lock tongue 2821. The opposite ends of the guide slide 2823 and the first elastic member 285 respectively resist the first lock tongue 2821 and the first fixing part 272, so that the first lock tongue 2821 moves and resets relative to the first fixing part 272; the second locking part 284 It also includes a second slide bar 2843 slidably connected to the second fixing member 274, one end of the second slide bar 2843 is connected to the second lock tongue 2841, and the second elastic member 286 is sleeved on the second slide bar 2843. Opposite ends of the second elastic member 286 respectively resist the second locking tongue 2841 and the second fixing member 274, so that the second locking tongue 2841 moves and returns relative to the second fixing member 274. The first guide slider 2823 is slidably inserted into the first through hole 2728 along the first direction (ie, the Y-axis direction), and the second guide slider 2843 is slidably inserted into the second slider along the first direction (ie, the Y-axis direction). Via 2748. In this embodiment, the first slide guide 2823 is a cylinder, and the first slide guide 2823 extends along the Y-axis direction. One end is connected to the middle of one end surface of the first lock tongue 2821, and the diameter of the first slide bar 2823 is less than or equal to the inner diameter of the first through hole 2728; the first slide bar 2843 is a cylinder, and the first slide bar 2843 is a cylinder. 2823 extends along the Y-axis direction, one end of the second slide bar 2843 is connected to the middle of one end surface of the second lock tongue 2841, and the diameter of the second slide bar 2843 is less than or equal to the inner diameter of the second through hole 2748.

The first guide slide groove 2720 may be, but is not limited to, a rectangular groove, a circular groove, a polygonal groove, etc., and the first lock tongue 2821 corresponding to the first guide slide groove 2720 may be, but is not limited to, a rectangular block, a circular column, a polygonal block, etc.; The second guide slide groove 2740 may be, but is not limited to, a rectangular groove, a circular groove, a polygonal groove, etc., and the second lock tongue 2841 corresponding to the second guide slide groove 2740 may be, but is not limited to, a rectangular block, a circular column, a polygonal block, etc. In this embodiment, the first guide slot 2720 is a rectangular slot extending along the Y-axis direction, and the first lock tongue 2821 is a rectangular block; the second guide slot 2740 is a rectangular slot extending along the Y-axis direction, and the second lock tongue 2821 is a rectangular block. 2841 is in the form of a rectangular block.

The first locking member 282 also includes a first connecting portion 2825 connected to an end of the first guide slide 2823 away from the first lock tongue 2821. The first connecting portion 2825 can extend out of the first fixing member 272. The second locking member 284 also includes Connected to the second connecting portion 2845 at an end of the second slide guide bar 2843 away from the second lock tongue 2841, the second connecting portion 2845 can extend out of the second fixing member 274. In this embodiment, the first connecting part 2825 is a first connecting block protruding from the end surface of the first guide slider 2823 away from the first lock tongue 2821. The first connecting part 2825 is provided with a first connecting hole 2826. Specifically, A connection hole 2826 passes through the first connection part 2825 along the The second connection hole 2846, specifically, the second connection hole 2846 penetrates the second connection portion 2845 along the X-axis direction. The locking component 28 also includes a first moving part 287 and a second moving part 288. The first moving part 287 is connected to the first connecting part 2825, and the second moving part 288 is connected to the second connecting part 2845; specifically, the first locking part 287 is connected to the first connecting part 2825. The fastener 282 is slidably accommodated in the first guide groove 2720 of the first fixing member 272 along the Y-axis direction. The first elastic member 285 is sleeved on the first guide bar 2823 and the first connecting portion 2825 passes through the first passage. The hole 2728 exposes the first fixing part 272 and is connected to the first moving part 287; the second locking part 284 is slidably received in the second guide groove 2740 of the second fixing part 274 along the Y-axis direction, and the second elastic part 286 is sleeved on the second slide guide 2843, and the second connecting portion 2845 passes through the second through hole 2748 to expose the second fixing member 274 and then is connected to the second moving member 288. The first moving member 287 is driven by the first spring member 285 to push against the first fixed member 272 , and the second moving member 288 is driven by the second elastic member 286 to push against the second fixed member 274 .

The first connecting part 2825 and the first moving part 287 and the second connecting part 2845 and the second moving part 288 may be connected through, but are not limited to, snapping, screwing or gluing. In this embodiment, the first moving part 287 and the first locking part 282 are fixedly connected through the cooperation of the connecting part and the fixing hole. Specifically, the first moving part 287 includes a first rectangular block 2870, and the first moving part 287 corresponds to The first through hole 2728 is provided with a first fixing hole 2871, that is, the surface of the first rectangular block 2870 facing the first through hole 2728 is provided with a first fixing hole 2871, and the first connecting portion 2825 is connected to the first fixing hole 2871; The second moving member 288 includes a second rectangular block 2880. The second moving member 288 is provided with a second fixing hole 2881 corresponding to the second through hole 2748. That is, the surface of the second rectangular block 2880 facing the second through hole 2748 is provided with a second fixing hole 2881. Two fixing holes 2881, the second connecting portion 2845 is connected to the second fixing hole 2881. Preferably, the first moving member 287 is provided with a first clamping hole 2872 connected to the first fixing hole 2871 on the side thereof, and the second moving member 288 is provided with a second clamping hole 2882 connected with the second fixing hole 2881 on the side thereof; The member 287 also includes a first clamping column 2874, which is used to pass through the first clamping hole 2872 and be connected to the first connecting portion 2825; the second moving member 288 also includes a second clamping column 2884, the second clamping column 2884 It is used to connect to the second connecting part 2845 through the second card hole 2882.

In some embodiments, the first connecting part is protruding from the surface of the first moving member 287 facing the first through hole 2728, and the first fixing hole is provided on the end surface of the first guide slide 2823 facing the first connecting part. The connecting portion is engaged with the first fixing hole so that the first locking member 282 is connected to the first moving member 287; the second connecting portion protrudes from the surface of the second moving member 288 facing the second through hole 2748, and the second sliding bar The end surface of 2843 facing the second connecting part is provided with a second fixing hole, and the second connecting part is engaged with the second fixing hole to connect the second locking member 284 to the second moving member 288 .

As shown in FIGS. 10 and 11 , the memory alloy component 29 further includes a first positioning part 293 and a second positioning part 295 . The first positioning part 293 and the second positioning part 295 are respectively connected to opposite ends of the memory metal wire 291 . In this embodiment, the first positioning part 293 is detachably connected to The first moving part 287 and the second positioning part 295 are detachably connected to the second moving part 288. The first positioning part 293 and the first moving part 287 may be fixedly connected by, but not limited to, snapping, screwing, gluing or welding. The first positioning part 293 and the first moving part 287 are connected to the first fixing hole through the first clamping block, and/or the first positioning part 293 and the first moving part 287 are connected to the first locking hole through the first locking hole. A lock is connected; specifically, the first positioning part 293 is provided with a first clamping block 2875, the first positioning part 293 corresponds to the first fixing hole 2932 of the first clamping block 2875, and the first clamping block 2875 is clamped with the first fixing block 2875. hole 2932; and/or, the first moving member 287 is provided with a first locking hole 2876, the first positioning portion 293 is provided with a first locking member 2934 corresponding to the first locking hole 2876, and the first locking member 2934 is locked in the first locking hole 2876. A locking hole 2876 allows the first positioning portion 293 to be fixedly connected to the first moving member 287 . The second positioning part 295 and the second moving part 288 may be fixedly connected by, but not limited to, snapping, screwing, gluing or welding. The second positioning part 295 and the second moving part 288 are connected to the second fixing hole through the second clamping block, and/or the second positioning part 295 and the second moving part 288 are connected to the second locking hole through the second locking hole. The two locks are connected; specifically, the second positioning part 295 is provided with a second clamping block 2885, the second positioning part 295 corresponds to the second fixing hole 2952 of the second clamping block 2885, and the second clamping block 2885 is clamped in the second fixing hole 2952. hole 2952; and/or, the second moving member 288 is provided with a second locking hole 2886, the second positioning portion 295 is provided with a second locking member 2954 corresponding to the second locking hole 2886, and the second locking member 2954 is locked on the second locking hole 2886. The two locking holes 2886 allow the second positioning portion 295 to be fixedly connected to the second moving member 288 .

Preferably, a first receiving groove 2877 is provided on the side of the first rectangular block 2870 away from the first locking member 282 . The first positioning part 293 includes a first positioning piece 2931 and a first connecting piece connected to the first positioning piece 2931 2933, the first positioning piece 2931 is accommodated in the first receiving groove 2877, the first fixing hole 2932 is provided in the first positioning piece 2931, the end of the memory metal wire 291 is connected to the first connecting piece 2933; the second rectangular block 2880 A second receiving groove 2887 is provided on the end of the side away from the second locking member 284. The second positioning portion 295 includes a second positioning piece 2951 and a second connecting piece 2953 connected to the second positioning piece 2951. The second positioning piece 2951 accommodates In the second receiving slot 2887, the second fixing hole 2952 is provided in the second positioning piece 2951, and the end of the memory wire 291 is connected to the second connecting piece 2953.

In other embodiments, the first moving part 287 and the second moving part 288 may be omitted, the first positioning part 293 is detachably connected to the first locking part 282, and the second positioning part 295 is detachably connected to the second locking part. 284.

As shown in FIG. 10 , the first fixing member 272 is provided with a first stop portion 2723 on the inner wall of the first guide groove 2720 . The first stop portion 2723 is used to stop the first locking member 282 from approaching the memory wire 291 one end of the second fixing member 274 is provided with a second stop portion 2743 on the inner wall of the second guide groove 2740, and the second stop portion 2743 is used to stop the second locking member 284 from moving closer to the memory wire 291. move. In this embodiment, a first stop bar is provided on the inner wall of the first guide chute 2720 at one end close to the first through hole 2728, and the first locking tongue 2821 can be positioned at the end of the first guide chute 2720 away from the first through hole 2728. Slide along the Y-axis direction until the end surface of the first locking tongue 2821 close to the first guide slide bar 2823 stops at the first stop portion 2723 (i.e., the first stop bar) to prevent the first locking tongue 2821 from continuing to approach the first slide bar 2823. One end of a through hole 2728 slides; the inner wall of the second guide slide groove 2740 is provided with a second stop bar at one end close to the second through hole 2748, and the second lock tongue 2841 can move away from the second through hole 2748 in the second guide slide groove 2740. One end slides along the Y-axis direction until the end surface of the second lock tongue 2841 close to the second guide slide bar 2843 stops at the second stop portion 2743 (i.e., the second stop bar) to prevent the second lock tongue 2841 from continuing to move toward Slide the end close to the second through hole 2748.

In some embodiments, the first fixing member 272 is provided with a first stop groove at an end of the inner wall of the first guide slide 2720 away from the first through hole 2728. The first stop groove extends along the Y-axis direction to the first fixing groove. In the middle of the member 272, the first lock tongue 2821 is provided with a first stop bar corresponding to the first stop groove. When the first lock tongue 2821 slides along the Y-axis direction in the first guide slide groove 2720, the first stop bar is slidably accommodated in the first stop groove until the first stop bar blocks the end surface of the first stop groove close to the first through hole 2728 to prevent the first lock tongue 2821 from continuing to approach the first through hole 2728 One end slides; the second fixing member 274 is provided with a second stop slot at an end of the inner wall of the second guide slide groove 2740 away from the second through hole 2748, and the second stop slot extends along the Y-axis direction to the second fixing member 274. In the middle, the second lock tongue 2841 is provided with a second stop bar corresponding to the second stop groove. When the second lock tongue 2841 slides along the Y-axis direction in the second guide slide groove 2740, the second stop bar can slide. Accommodation The two stop grooves until the second stop bar blocks the end surface of the second stop groove close to the second through hole 2748 to prevent the second lock tongue 2841 from continuing to slide toward the end close to the second through hole 2748.

In the present invention, the first elastic member 285 is a first spring that can be sleeved on the first slide guide 2823, and the second elastic member 286 is a second spring that can be sleeved on the second slide guide 2843.

Please refer to Figures 8 to 13 together. When assembling the self-locking mechanism 26, the first elastic member 285 is sleeved on the first slide guide 2823, and the first elastic member 285 and the first guide slide 2823 are removed from the first outlet. 2721 is inserted into the first guide groove 2720, so that the first connecting part 2825 passes through the first through hole 2728 of the first fixing part 272 and is exposed; insert the first connecting part 2825 into the first fixing hole 2871 of the first moving part 287 , make the first connecting hole 2826 face the first clamping hole 2872; insert the first clamping post 2874 into the first clamping hole 2872 and the first connecting hole 2826; at this time, the opposite ends of the first elastic member 285 Press the first lock tongue 2821 and the first fixing bar 2724 respectively around the first through hole 2728, so that the first moving member 287 presses against the end surface of the first fixing bar 2724 away from the first outlet 2721; move the second elastic member 286 Set on the second guide slide bar 2843, insert the second elastic member 286 and the second guide slide bar 2843 from the second outlet 2741 into the second guide slide groove 2740, so that the second connecting portion 2845 passes through the second fixing member 274 The second through hole 2748 is exposed; insert the second connecting part 2845 into the second fixing hole 2881 of the second moving member 288, so that the second connecting hole 2846 is directly opposite to the second clamping hole 2882; insert the second clamping post 2884 Insert into the second clamping hole 2882 and the second connecting hole 2846; at this time, the opposite ends of the second elastic member 286 respectively resist the second lock tongue 2841 and the second fixing bar 2744 around the second through hole 2748. The second moving member 288 is pressed against the end surface of the second fixing bar 2744 away from the second outlet 2741; the first positioning piece 2931 of the first positioning portion 293 is received in the first receiving groove 2877 of the first moving member 287, so that The first block 2875 is engaged with the first fixing hole 2932 of the first positioning piece 2931, and locks the first locking member 2934 in the first locking hole 2876, so that the first positioning portion 293 is fixedly connected to the first fixing hole 2932. Moving part 287; accommodate the second positioning piece 2951 of the second positioning part 295 in the second receiving groove 2887 of the second moving part 288, so that the second clamping block 2885 is engaged with the second fixing part of the second positioning piece 2951. hole 2952, and lock the second locking member 2954 in the second locking hole 2886, so that the second positioning portion 295 is fixedly connected to the second moving member 288.

Please refer to FIGS. 1-7 and 14 together. When assembling the electronic device 100, install the self-locking mechanism 26 to the first housing 22. Specifically, fit the first fixing part 272 of the self-locking mechanism 26 to the first housing 22. The first fixing part of a housing 22 allows the first fixing post 2726 of the first fixing part 272 to be engaged in the first fixing hole 2251, and the locking part passes through the first through hole 2727 and is locked to the first fixing part. In the locking hole, the first fixing part 272 is fixedly connected to the first housing 22; the second fixing part 274 of the self-locking mechanism 26 is attached to the second fixing part of the first housing 22, so that the second fixing part 272 is fixedly connected to the first housing 22. The second fixing post 2746 of 274 is engaged in the second fixing hole 2253, and the locking member passes through the second through hole 2747 and is locked into the locking hole of the second fixing part, so that the second fixing member 274 is fixedly connected to the second fixing hole 2746. A housing 22. At this time, the memory wire 291 is in a straightened state, and the first locking tongue 2821 of the first locking member 282 extends out of the first fixing member 272 toward one of the first end walls 223 and the second locking tongue of the second locking member 284 2841 extends the second fixing member 274 toward the other first end wall 223; insert the side of the second housing 24 away from the second side wall 244 into the first receiving space 227 of the first housing 22, so that the second housing The two guide slide bars 2430 of the body 24 are slidably inserted into the two guide grooves 2230 respectively, and the guide rails 228 are slidably received in the corresponding guide slide grooves 246 to electrically connect the memory alloy piece 29 to the power supply 40 . At this time, the first locking tongue 2821 and the second locking tongue 2841 are respectively inserted into the first locking opening 2414 and the second locking opening 2415 on the side farthest from the second side wall 244. The first housing 22 and the second housing 24 is in a fully unfolded state; the mainboard 30 can control the driving member 80 to drive the second housing 24 to slide in the X-axis direction relative to the first housing 22 . The back of the sliding area 64 of the flexible screen 60 is attached to the front of the support device 50 . The positioning area 62 of the flexible screen 60 is received in the positioning groove 2210 of the first housing 22 , and the back of the positioning area 62 is fixedly attached. On the front of the top wall 221, one side of the flexible screen 60 is engaged in the connecting groove 2240 of the first housing 22; the side of the supporting device 50 away from the flexible screen 60 is surrounded by the second housing 24; the supporting device 50 The side close to the positioning area 62 is connected to the first housing 22 , and the supporting device 50 is connected to the bottom wall 241 of the second housing 24 on the side away from the positioning area 62 , so that the supporting device 50 and the flexible screen 60 can slide around the second housing 24 . on the housing 24. At this time, when the power supply 40 and the memory alloy part 29 are energized, the memory metal wire 291 shrinks due to heat and drives the first locking part 282 and the second locking part 284 to be on the first fixing part 272 respectively. A guide slide groove 2720 and a second guide slide groove 2740 of the second fixing member 274 slide, so that the first locking member 282 and the second locking member 284 move closer to each other, so that the first locking tongue 2821 and the second locking tongue 2841 are disengaged respectively. The first locking opening 2414 and the second locking opening 2415, the first elastic member 285 and the second elastic member 286 are compressed, the second housing 24 and the first housing 22 are in an unlocked state, and the second housing 24 is in an unlocked state. The first housing 22 can move in the X-axis direction.

When the flexible screen 60 of the electronic device 100 is fully curled, the power supply 40 and the memory wire 291 are in a power-off state, the memory wire 291 is in a reset state, and the first elastic member 285 elastically pushes the first lock member 282 to lock the first lock member 282 . The tongue 2821 is inserted into the corresponding first locking opening 2414. At the same time, the second elastic member 286 elastically pushes the second locking member 284 so that the second locking tongue 2841 is inserted into the corresponding second locking opening 2415 to prevent the second housing 24 from facing each other. In the first housing 22, the two stop portions 2255 are respectively positioned in the two stop grooves 2443; when the power supply 40 and the memory wire 291 are energized, the memory wire 291 contracts to drive the first lock tongue 2821 and the second lock. The tongues 2841 are respectively disengaged from the corresponding first locking openings 2414 and second locking openings 2415 to facilitate the contraction of the second housing 24 relative to the first housing 22 and the first elastic member 285 and the second elastic member 286 to be compressed. When the flexible screen 60 of the electronic device 100 is fully deployed, the memory wire 291 is in a power-off state, the memory wire 291 returns to its original length, and the first elastic member 285 elastically pushes the first lock member 282 to insert the first lock tongue 2821 Corresponding to the first locking opening 2414, at the same time, the second elastic member 286 elastically pushes the second locking member 284 so that the second locking tongue 2841 is inserted into the corresponding second locking opening 2415 to prevent the second housing 24 from being moved relative to the first locking opening 2414. A housing 22; when the power supply 40 is energized with the memory wire 291, the memory wire 291 is heated and shrinks to drive the first lock tongue 2821 and the second lock tongue 2841 to separate from the corresponding first locking port 2414 and the second lock respectively. 2415 to facilitate the expansion of the second housing 24 relative to the first housing 22 .

Please refer to Figures 1 to 5 and 14 to 16 together. When the flexible screen 60 of the electronic device 100 needs to be unfolded or rolled, the mainboard 30 controls the power supply 40 to energize the memory wire 291, and the memory wire 291 heats and shrinks. A locking member 282 and a second locking member 284 are close to each other, so that the first locking tongue 2821 and the second locking tongue 2841 are separated from the first locking opening 2414 and the second locking opening 2415. The second housing 24 and the first housing 22 is in an unlocked state; at this time, the mainboard 30 controls the driving member 80 to push or pull back the second housing 24 to slide along the X-axis direction, so that the second housing 24 moves away from or approaches the first housing 22. Sliding relative to the supporting device 50 causes the supporting device 50 to unfold or curl, so that the supporting device 50 slides around the second housing 24 , and the sliding roll area 64 expands or curls along with the supporting device 50 .

In one embodiment, the stroke detection device 70 may be a distance sensor used to detect the movement position of the second housing 24 relative to the first housing 22; when the flexible screen 60 needs to be unfolded, the mainboard 30 controls the power supply 40 to When the memory metal wire 291 is energized, the memory metal wire 291 is heated and shrinks to drive the first locking member 282 and the second locking member 284 to move closer to each other, so that the first locking tongue 2821 and the second locking tongue 2841 are separated from the first locking opening 2414 and the second locking opening 2414. The second locking port 2415; the mainboard 30 controls the driving member 80 to drive the second housing 24 to slide relative to the first housing 22 so that the second housing 24 and the first housing 22 unfold each other, so that the support device 50 surrounds the second housing 24 slides, and the sliding roll area 64 expands along with the supporting device 50 . The stroke detection device 70 detects the position in which the second housing 24 moves relative to the first housing 22. When the second housing 24 moves to the required locking position relative to the first housing 22, the stroke detection device 70 detects the position of the second housing 24 relative to the first housing 22. The position of the housing 24 is calculated and the corresponding positions of the first locking port 2414 and the second locking port 2415 are calculated, and then a signal is sent to the mainboard 30. The mainboard 30 receives the signal and controls the power supply 40 and the memory alloy part 29 to be powered off. The memory alloy member 29 is restored to its original length, and the mainboard 30 controls the driving member 80 to stop driving the second housing 24, that is, the second housing 24 does not move relative to the first housing 22, and the first elastic member 285 and the second The elastic member 286 respectively pushes the first locking tongue 2821 and the second locking tongue 2841 away from each other until the first locking tongue 2821 and the second locking tongue 2841 are inserted into the first locking opening 2414 and the second locking opening 2415 respectively, so that The second housing 24 and the first housing 22 are positioned relative to each other. When the second housing 24 needs to be deployed again relative to the first housing 22 , the mainboard 30 controls the power supply 40 and the memory wire 291 to be energized again, so that the first locking tongue 2821 and the second locking tongue 2841 are separated from the first locking opening. 2414 and the second locking opening 2415 are unlocked, and the above process is repeated until the second housing 24 is fully expanded relative to the first housing 22 and the flexible screen 60 is in a fully expanded state. When the flexible screen 60 needs to be curled, the mainboard 30 controls the power supply 40 to energize the memory wire 291. The memory wire 291 shrinks due to heat to drive the first locking member 282 and the second locking member 284 to move closer to each other, so that the first locking tongue 2821 and the second locking member 284 move closer to each other. second The lock tongue 2841 is separated from the first locking port 2414 and the second locking port 2415; the mainboard 30 controls the driving component 80 to drive the second housing 24 to slide relative to the first housing 22 so that the second housing 24 and the first housing 22 They move closer to each other, so that the support device 50 rolls and slides around the second housing 24 , and the sliding roll area 64 rolls with the support device 50 . The stroke detection device 70 detects the position in which the second housing 24 moves relative to the first housing 22. When the second housing 24 moves to the required locking position relative to the first housing 22, the stroke detection device 70 detects the position of the second housing 24 relative to the first housing 22. The position of the housing 24 is calculated and the corresponding positions of the first locking port 2414 and the second locking port 2415 are calculated, and then a signal is sent to the mainboard 30. The mainboard 30 receives the signal and controls the power supply 40 and the memory alloy part 29 to be powered off. The memory alloy member 29 is restored to its original length, and the mainboard 30 controls the driving member 80 to stop driving the second housing 24. The first elastic member 285 and the second elastic member 286 respectively push the first lock tongue 2821 and the second lock tongue. 2841 move away from each other until the first locking tongue 2821 and the second locking tongue 2841 are inserted into the first locking opening 2414 and the second locking opening 2415 respectively. When the second housing 24 needs to be moved closer to the first housing 22 again, the mainboard 30 controls the power supply 40 and the memory wire 291 to be energized again, so that the first lock tongue 2821 and the second lock tongue 2841 are separated from the first lock. The opening 2414 and the second locking opening 2415 are unlocked, and the above process is repeated until the second housing 24 is completely contracted relative to the first housing 22 and the flexible screen 60 is in a fully curled state.

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 second The time required for the 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 40. The mainboard 30 receives the signal and controls the power supply 40 and the memory alloy part 29 to power off in advance, and the memory alloy part 29 gradually resets, the first elastic member 285 and the second elastic member 286 respectively push the first lock tongue 2821 and the second lock tongue 2841 away from each other. At the same time, the second housing 24 continues to move relative to the first housing 22. When the first locking tongue 2821 and the second locking tongue 2841 face the corresponding first locking opening 2414 and the second locking opening 2415 respectively, the mainboard 40 controls the driving member 80 to stop driving the second housing 24 relative to the first housing. 22 moves, the first locking tongue 2821 and the second locking tongue 2841 are respectively inserted into the first locking port 2414 and the second locking port 2415, and the second housing 24 and the first housing 22 are locked, that is, the second housing 24 It cannot move relative to the first housing 22 . When the second housing 24 needs to move again relative to the first housing 22, the memory wire 291 is powered on and unlocked again, and the above process is repeated. The other embodiment can improve the locking response time of the self-locking mechanism 26 .

Since the first fixing part 272 of the self-locking mechanism 26 is provided with the first stop part 2723 and the second fixing part 274 is provided with the second stop part 2743, the first lock tongue 2821 can slide in the first guide groove 2720. And stop at the first stop part 2723, the second lock tongue 2841 can slide in the second guide groove 2740 and stop at the second stop part 2743; therefore, when the memory metal wire 291 is energized, the memory metal The wire 291 shrinks when heated to drive the first locking tongue 2821 to slide in the first guide slide groove 2720 and the second locking tongue 2841 to slide in the second guide slide groove 2740, and the first locking tongue 2821 and the second locking tongue 2841 are blocked respectively. It blocks the first stop portion 2723 and the second stop portion 2743 to ensure that the contraction of the opposite ends of the memory metal wire 291 can reach the maximum position to prevent the shrinkage displacement of one end of the memory metal wire 291 from being too large, and the memory metal wire 291 The other end of 291 is not contracted or the contraction displacement is not in place, causing the other end of the self-locking mechanism 26 to be unable to unlock. Since the self-locking mechanism 26 is provided with the first stop portion 2723 and the second stop portion 2743, the memory wire 291 may get stuck during the power-on contraction process. The stuck means that the memory wire 291 is in the process of contraction. There is no shrinkage in the stroke space, but the power supply 40 continues to energize the memory wire 291 at this time; at this time, it is necessary to control the memory wire 291 through the motherboard 30 to prevent the jamming of the memory wire 291 from occurring. Specifically, the memory wire 291 can be detected through real-time detection. The resistance value of the metal wire 291 detects the stuck state based on the change in resistance value. That is, when the detected resistance value reaches a specific value, the mainboard 30 controls the power supply 40 to reduce the current to the memory wire 291 to maintain the state or directly cut off the power supply. . The specific value refers to the resistance value when the memory wire 291 has no shrinkage in the stroke space.

The mainboard 30 of the electronic device 100 of the present invention controls the driving member 80 to drive the second housing 24 to move relative to the first housing 22 to realize automatic expansion or contraction of the housing 20. The sliding roll area 64 of the flexible screen 60 follows the movement of the second housing 24. The body 24 can be automatically unfolded or rolled, making it easy to use. After unfolding, the sliding roll area 64 can increase the display surface of the flexible screen 60, making it convenient for users to use. After being rolled, the sliding roll area 64 can reduce the size of the electronic device 100, making it easier for the user to carry it; In addition, after the second housing 24 is deployed relative to the first housing 22, it is automatically locked through the self-locking mechanism 26. To prevent the second housing 24 from moving relative to the first housing 22, when the electronic device 100 falls, the second housing 24 can be prevented from moving relative to the first housing 22, which can effectively protect the entire electronic device 100 and prevent the flexible screen 60 from being moved. loss and damage to the internal mechanism of the housing 20; secondly, the self-locking mechanism 26 realizes automatic unlocking or automatic locking by powering on the memory metal wire 291, the logic is simple, and can realize multi-level self-locking or unlocking, and the memory metal The wire 291 has a large energy density, driving strain and driving stress, and the driving voltage required by the memory metal wire 291 is low and easy to obtain; in addition, the self-locking mechanism 26 is small in weight and volume, occupying the space of the housing 20 The internal space is small, which facilitates the layout of other components, and the self-locking mechanism 26 of the present invention only uses one memory wire 291, which requires significantly less current than using two or more memory wires, and the power is also significantly reduced.

Please refer to Figures 17 and 18 together. The structure of the housing assembly 20a of the electronic device in the second embodiment of the present invention is similar to the structure of the housing assembly 20 in the first embodiment. The difference is that the self-locking mechanism 26a The structure of the self-locking mechanism 26a is slightly different from that of the self-locking mechanism 26. Specifically, the self-locking mechanism 26a is based on the self-locking mechanism 26 in the first embodiment and omits the fixing piece, locking piece and elastic piece at one end of the memory alloy piece 29. . Specifically, the second fixing part, the second locking part and the second elastic part at one end of the memory alloy part 29 of the self-locking mechanism 26a can be omitted, that is, the self-locking mechanism 26a only includes the first fixing part 272 and the first locking part 282 and the first elastic member. The first locking member 282 is movably connected to the first fixing member 272 along the first direction (ie, the Y-axis direction). One end of the memory wire 291 is connected to the first locking member 282. The memory wire 291 The opposite end is fixedly connected to the first housing 22 through the positioning block 297. The memory alloy part 29 is powered on or off to drive the first locking part 282 to move relative to the first fixing part 272, so that the first lock tongue 2821 is disengaged or Locked between the second housing 24 and the first housing 22; specifically, when the memory wire 291 is powered on, the memory wire 291 shrinks to drive the first locking member 282 along the edge relative to the first fixing member 272. The movement in the first direction causes the first lock tongue 2821 to separate from the first locking opening 2414, the first elastic member is compressed and deformed, and the second housing 24 can move in the X-axis direction relative to the first housing 22; when the memory wire 291 and the power supply are cut off, the memory metal wire 291 returns to its original length, and the first elastic member elastically resets and pushes the first locking member 282 to move and reset, so that the first lock tongue 2821 is inserted into the first locking opening 2414, and the second shell The body 24 cannot move relative to the first housing 22 , that is, the second housing 24 cannot move along the X-axis direction relative to the first housing 22 .

In some embodiments, the first fixing part 272, the first locking part 282 and the first elastic part 285 at one end of the memory alloy part 29 of the self-locking mechanism can be omitted, that is, the self-locking mechanism 26 only includes the second fixing part 274, The second locking member 284 and the second elastic member 286 are connected to the second fixing member 274 movably along the first direction (ie, the Y-axis direction). One end of the memory wire 291 is connected to the second locking member. 284. The opposite end of the memory wire 291 is fixedly connected to the first housing 22. The memory wire 291 is powered on or off to drive the second locking member 284 to move relative to the second fixing member 274, so that the second lock tongue 2841 Disengaged or locked between the second housing 24 and the first housing 22; specifically, when the memory wire 291 is powered on, the memory wire 291 shrinks to drive the second locking member 284 relative to the second fixing member. 274 moves along the first direction, causing the second lock tongue 2841 to break away from the second locking opening 2415, the second elastic member is compressed and deformed, and the second housing 24 can move along the X-axis direction relative to the first housing 22; when the memory When the metal wire 291 is disconnected from the power supply, the memory metal wire 291 returns to its original length, and the second elastic member elastically resets and pushes the second locking member 284 to move and reset, so that the second lock tongue 2841 is inserted into the second locking port 2415. The second housing 24 cannot move relative to the first housing 22 , that is, the second housing 24 cannot move along the X-axis direction relative to the first housing 22 .

In some embodiments, the self-locking mechanism may also include a first fixing part 272, a first locking part 282, a first elastic part 285, a second fixing part 274, a second locking part 284, a second elastic part 286 and two Memory alloy piece 29, the first locking piece 282 is movably connected to the first fixing piece 272 along the first direction, one end of one of the memory alloy pieces 29 is connected to the first locking piece 282, and one of the memory alloy pieces 29 is opposite to The other end is connected to the first housing 22. The energization or de-energization of one of the memory alloy parts 29 drives the first locking member 282 to move relative to the first fixing member 272, so that the first locking tongue 2821 is disengaged or locked to the first housing 22. The first locking opening 2414; the second locking piece 284 is movably connected to the second fixing piece 274 along the first direction, one end of the other memory alloy piece 29 is connected to the second locking piece 284, and the other memory alloy piece 29 is connected to the second locking piece 284. The opposite end of the metal piece 29 is connected to the first housing 22. The other memory alloy piece 29 is powered on or off to drive the second locking piece 284 to move relative to the second fixing piece 274, so that the second lock tongue 2841 Disengage or lock at the second locking port 2415. Preferably, the two memory alloy parts 29 are energized at the same time to drive the first locking part 282 and the second locking part 284 to shrink synchronously on the first fixing part 272 and the second fixing part 274 respectively, so that the first locking tongue 2821 and the second locking part 2821 are locked. The tongue 2841 is synchronously separated from the first locking port 2414 and the second locking port 2415 respectively; the two memory alloy parts 29 are powered off at the same time to drive the first locking part 282 and the second locking part 284 to extend out of the first fixing part 272 respectively. and the second fixing member 274, so that the first locking tongue 2821 and the second locking tongue 2841 are respectively inserted into the first locking opening 2414 and the second locking opening 2415 simultaneously.

Please refer to Figures 19 to 25 together. The structure of the housing assembly 20b of the electronic device in the third embodiment of the present invention is similar to the structure of the housing assembly 20 in the first embodiment. The difference is that the self-locking mechanism 26b The structure of the self-locking mechanism 26b is slightly different from that of the self-locking mechanism 26. Specifically, the self-locking mechanism 26b adds two third elastic members 296 on the basis of the self-locking mechanism 26 in the first embodiment. One of the third elastic members The opposite ends of 296 are respectively connected to one end of the memory metal wire 291 and the first locking member 282, and the opposite ends of the third elastic member 296 are respectively connected to the other opposite end of the memory metal wire 291 and the second locking member 284. In this embodiment, one end of the third elastic member 296 facing away from the memory metal wire 291 is connected to the first locking member 282 through the first positioning part 293 and the first moving part 287, and the other third elastic member 296 faces away from the memory metal wire. One end of 291 is connected to the second locking member 284 through the second positioning part 295 and the second moving part 288; preferably, the opposite ends of a third elastic member 296 are respectively welded to one end of the memory metal wire 291 and the first positioning part 293 is away from the first rectangular block 2870, and the opposite ends of the other third elastic member 296 are respectively welded to the opposite end of the memory metal wire 291 and the end of the second positioning portion 295 away from the second rectangular block 2880. When the power supply 40 energizes the memory wire 291, the contraction of the memory wire 291 generates a contraction force that acts on the third elastic member 296. The two third elastic members 296 pass the force through the first positioning part 293 and the second positioning part respectively. The portion 295 is applied to the first locking member 282 and the second locking member 284, and the first elastic member 285 and the second elastic member 286 are compressed, so that the first locking tongue 2821 and the second locking tongue 2841 are separated from the first locking opening respectively. 2414 and the second locking port 2415 to realize automatic unlocking of the self-locking mechanism 26b, so that the second housing 24 and the first housing 22 can move relative to each other. When the power supply 40 stops energizing the memory wire 291, the memory wire 291 returns to its original length and extends toward the opposite end. The two third elastic members 296, the first elastic member 285 and the second elastic member 286 are all elastically reset. The elastic member 285 and the second elastic member 286 respectively push the first locking member 282 and the second locking member 284 away from each other, so that the first locking tongue 2821 and the second locking tongue 2841 are inserted into the first locking opening 2414 and the second locking opening 2414 respectively. In the locking opening 2415, the self-locking mechanism 26b is automatically locked to prevent the second housing 24 from moving relative to the first housing 22. Preferably, when the power supply 40 energizes the memory wire 291, the memory wire 291 contracts, and the first locking tongue 2821 and the second locking tongue 2841 respectively synchronously separate from the corresponding first locking opening 2414 and the second locking opening 2415, Realize the unlocking of the self-locking mechanism 26b; when the power supply 40 and the memory wire 291 are powered off, the memory wire 291 returns to its original length, and the first lock tongue 2821 and the second lock tongue 2841 are respectively inserted into the corresponding first locking port 2414 simultaneously. and a second locking port 2415 to realize locking of the self-locking mechanism 26b.

The elastic coefficient of the third elastic member 296 is greater than the elastic coefficient of the first elastic member 285 and the elastic coefficient of the second elastic member 286 . In this embodiment, the first elastic member 285 and the second elastic member 286 are springs with the same elastic coefficient, and the third elastic member 296 is a tension spring; the elastic coefficient of the third elastic member 296 is KB, and the first elastic member 285 and the third elastic member 296 are springs. The elastic coefficients of the two elastic members 286 are both KF. After the power supply 40 energizes the memory wire 291, one end moves along the Y-axis direction and the displacement is Δx2. The first locking tongue 2821 or the second locking tongue 2841 can move along the Y-axis direction respectively. The motion displacement is △x1, and its relationship is The first fastener 282 is in the first direction (i.e. Y axis direction) and the movement displacement amount of the second locking member 284 relative to the second fixing member 274 in the first direction (i.e., the Y-axis direction) is less than the shrinkage amount of the memory alloy part 29; therefore, the The movement displacement Δx1 of the first lock tongue 2821 or the second lock tongue 2841 is less than the shrinkage amount Δx2 of the memory metal. In order to meet the movement displacement △x1 stroke of the first lock tongue 2821 or the second lock tongue 2841, the values of △x1 and △x2 will generally be relatively close. Otherwise, the shrinkage amount of the memory wire 291 will cause a large loss, in which the loss amount =△x2-△x1; Therefore, when the overall space of the housing 20 is limited, when KB>>KF, the shrinkage loss of the memory wire 291 is close to 0.

When the first locking member 282 and/or the second locking member 284 of the self-locking mechanism 26b is stuck due to external force, even if the power supply 40 continues to energize the memory wire 291, the memory wire 291 will only compress the third elastic member at this time. 296 to provide the deformation displacement of the memory metal wire 291. Therefore, the third elastic member 296 has the function of protecting the memory metal wire 291. In this embodiment, by adding third elastic members 296 at opposite ends of the memory wire 291, the memory wire 291 can be prevented from being damaged. There is no need to use the motherboard 30 to detect and control the stuck state of the memory wire 291, and the application is relatively simple. , lower cost.

In other embodiments, the third elastic member 296 may be connected to only one end of the memory wire 291. Specifically, the third elastic member 296 may be connected between the first locking member 282 and the end of the memory wire 291. , a third elastic member 296 may also be connected between the second locking member 284 and the end of the memory wire 291 .

Please refer to Figures 26 and 27 together. The structure of the housing component 20c of the electronic device in the fourth embodiment of the present invention is similar to the structure of the housing component 20b in the third embodiment. The difference is that the fourth embodiment The structure of the self-locking mechanism 26c in the third embodiment is slightly different from the structure of the self-locking mechanism 26b in the third embodiment. Specifically, the self-locking mechanism 26c is based on the self-locking mechanism 26b in the third embodiment and omits the memory alloy. The fixing part, the locking part and the elastic part at one end of the wire 291. Specifically, the second fixing part, the second locking part, the second elastic part and the third elastic part at one end of the memory alloy part 29 of the self-locking mechanism 26c can be omitted, that is, the self-locking mechanism 26c only includes the first fixing part 272, The first locking member 282, the first elastic member and the third elastic member 296. The first locking member 282 is movably connected to the first fixing member 272 along the first direction (ie, the Y-axis direction). One end of the memory wire 291 is connected to In the third elastic member 296, the opposite end of the memory metal wire 291 is fixedly connected to the first housing 22 through the connecting block. The memory alloy member 29 is powered on or off to drive the first locking member 282 to move relative to the first fixing member 272. , so that the first lock tongue 2821 is detached or locked between the second housing 24 and the first housing 22; specifically, when the memory wire 291 is powered on, the memory wire 291 contracts to drive the first lock. The firmware 282 moves in the first direction relative to the first fixing member 272, so that the first lock tongue 2821 is separated from the first locking opening 2414, the first elastic member 296 and the third elastic member 296 are compressed and deformed, and the second housing 24 can face each other. The first housing 22 moves along the X-axis direction; when the memory wire 291 is disconnected from the power supply, the memory wire 291 returns to its original length, the third elastic member 296 resets, and the first elastic member elastically resets to push the first locking member 282 is moved and reset, so that the first lock tongue 2821 is inserted into the first locking opening 2414, and the second housing 24 cannot move relative to the first housing 22, that is, the second housing 24 cannot move along the direction relative to the first housing 22. Move in the X-axis direction.

In some embodiments, the first fixing part 272, the first locking part 282, the first elastic part 285 and the third elastic part 296 at one end of the memory alloy part 29 of the self-locking mechanism can be omitted, that is, the self-locking mechanism only includes the third elastic part. Two fixed parts 274, a second locking part 284, a second elastic part 286 and a third elastic part 296. The second fastening part 284 is movably connected to the second fixing part 274 along the first direction (ie, the Y-axis direction). The memory metal One end of the wire 291 is connected to the third elastic member 296, and the opposite end of the memory metal wire 291 is fixedly connected to the first housing 22. The memory metal wire 291 is powered on or off to drive the second locking member 284 relative to the second fixed member. The member 274 moves to disengage the second lock tongue 2841 Or locked between the second housing 24 and the first housing 22; specifically, when the memory wire 291 is powered on, the memory wire 291 shrinks to drive the second locking member 284 relative to the second fixing member 274. Move along the first direction so that the second lock tongue 2841 is separated from the second locking opening 2415, the second elastic member and the third elastic member 296 are compressed and deformed, and the second housing 24 can move along the X-axis relative to the first housing 22. direction movement; when the memory wire 291 is disconnected from the power supply, the memory wire 291 returns to its original length, the third elastic member 296 resets, and the second elastic member elastically resets and pushes the second lock member 284 to move and reset, so that the second lock When the tongue 2841 is inserted into the second locking opening 2415, the second housing 24 cannot move relative to the first housing 22, that is, the second housing 24 cannot move along the X-axis direction relative to the first housing 22.

The above is the implementation of the embodiments of the present application. It should be pointed out that for those of ordinary skill in the technical field, several improvements and modifications can be made without departing from the principles of the embodiments of the present application. These improvements and modifications can also be made. regarded as the protection scope of this application.

Claims

A self-locking mechanism, characterized in that the self-locking mechanism includes:

a fixing component, the fixing component including a first fixing piece;

Locking component, the locking component includes a first locking member and a first elastic member, the first locking member is movably connected to the first fixing member, the first locking member includes a first lock tongue, so The first elastic member has an elastic force that drives the first locking member to move and reset relative to the first fixing member; and

A memory alloy piece, one end of the memory alloy piece is connected to the first locking piece, the memory alloy piece is used to drive the first locking piece to move relative to the first fixing piece, so that the third A lock tongue extends or contracts from the first fixing part.
The self-locking mechanism according to claim 1, wherein the fixing component further includes a second fixing member, the locking component further includes a second locking member and a second elastic member, and the second locking member moves is connected to the second fixing part, the second locking part includes a second lock tongue, and the second elastic part has an elastic force that drives the second locking part to move and reset relative to the second fixing part, so Opposite ends of the memory alloy piece are connected to the first locking piece and the second locking piece respectively. The memory alloy piece is also used to drive the second locking piece to move relative to the second fixing piece. The second lock tongue is allowed to extend or contract from the second fixing member.
The self-locking mechanism according to claim 2, wherein the memory alloy component includes a memory metal wire, and opposite ends of the memory metal wire are respectively connected to the first locking member and the second locking member. Firmware, the contraction or reset of the memory wire makes the first locking part and the second locking part move closer to or move away from each other.
The self-locking mechanism according to claim 3, wherein the shrinkage amount of the memory wire in the first direction is equal to the contraction of the first lock relative to the first fixing member along the first direction. The sum of the displacement amount and the displacement amount of the second lock relative to the second fixing member along the first direction.
The self-locking mechanism according to claim 3, wherein the first fixing member is provided with a first guide chute along the first direction, and the first guide chute penetrates the first fixing member and faces away from the first fixing member. The end surface of the memory metal wire forms a first outlet, the first locking piece is slidably accommodated in the first guide chute, and the first lock tongue extends or contracts under the driving of the memory metal wire. The first outlet; the second fixing member is provided with a second guide chute along the first direction, and the second guide chute penetrates the end surface of the second fixing member away from the memory wire to form a second The second locking member is slidably received in the second guide groove, and the second lock tongue extends or contracts from the second outlet driven by the memory wire.
The self-locking mechanism of claim 5, wherein the memory alloy piece further includes a first positioning part and a second positioning part, and the first positioning part and the second positioning part are respectively connected to the At opposite ends of the memory wire, the first positioning part is detachably connected to the first locking part, and the second positioning part is detachably connected to the second locking part.
The self-locking mechanism according to claim 6, wherein the first locking member further includes a first sliding bar slidably connected to the first fixing member, and one end of the first sliding bar is connected to On the first lock tongue, the first elastic member is sleeved on the first guide slider, and the opposite ends of the first elastic member respectively resist the first lock tongue and the first fixing member. ; The second locking member further includes a second slide bar slidably connected to the second fixing member, one end of the second slide bar is connected to the second lock tongue, and the second elastic member Sleeved on the second slide bar, the opposite ends of the second elastic member respectively resist the second lock tongue and the second fixing member.
The self-locking mechanism according to claim 7, wherein the first locking member further includes a first connection portion connected to an end of the first guide slide bar facing away from the first lock tongue, and the first connection portion The second locking member also includes a second connecting portion connected to an end of the second slide bar facing away from the second lock tongue, and the second connecting portion extends out of the first fixing member. The second fixing part, the locking group The piece also includes a first moving piece and a second moving piece, the first moving piece is connected to the first connecting part, the second moving piece is connected to the second connecting part, and the first positioning part can The second positioning part is detachably connected to the first moving part, the second positioning part is detachably connected to the second moving part, and the first moving part is driven by the first spring part to push against the second moving part. A fixed part, the second moving part is driven by the second elastic part to push against the second fixed part.
The self-locking mechanism of claim 8, wherein an end of the first fixing member facing away from the first outlet is provided with a first through hole communicating with the first guide chute, and the first guide The slide bar is slidably disposed in the first through hole, the first moving member is provided with a first fixing hole corresponding to the first through hole, and the first connecting part is connected to the first fixing hole; An end of the second fixing member facing away from the second outlet is provided with a second through hole connected to the second guide slide groove, and the second guide slide bar is slidably disposed in the second through hole, The second moving member is provided with a second fixing hole corresponding to the second through hole, and the second connecting portion is connected to the second fixing hole.
The self-locking mechanism according to claim 5, wherein the first fixing member is provided with a first stop portion on the inner wall of the first guide chute, and the first stop portion is used for blocking. The first locking member moves toward one end close to the memory wire; the second fixing member is provided with a second stop portion on the inner wall of the second guide chute, and the second stop portion is used for Stop the second locking member from moving toward an end close to the memory wire.
The self-locking mechanism according to claim 2, wherein the locking component further includes two third elastic members, wherein opposite ends of one of the third elastic members are respectively connected to one end of the memory wire. And the first locking member, the opposite ends of the other third elastic member are respectively connected to the other opposite end of the memory metal wire and the second lock.
The self-locking mechanism according to claim 11, wherein the displacement amount of the first locking member relative to the first fixing member in the first direction is equal to the displacement of the second locking member relative to the first fixing member. The sum of the displacements of the two fixed parts in the first direction is less than the shrinkage of the memory alloy part.
The self-locking mechanism according to claim 11, wherein the elastic coefficient of the third elastic member is greater than the elastic coefficient of the first elastic member and the elastic coefficient of the second elastic member.
The self-locking mechanism according to claim 2, wherein the first lock tongue and the second lock tongue can respectively extend out of the first fixing part and the second fixing part simultaneously, or the The first lock tongue and the second lock tongue can respectively retract simultaneously to the second fixing part and the second fixing part.
An electronic device, characterized in that the electronic device includes a self-locking mechanism according to any one of claims 1 to 14, a first housing, a second housing, a first housing or a second housing. The power supply and the motherboard of the second housing, the first housing and the second housing are slidingly connected to each other, the first fixing part of the self-locking mechanism is connected to the first housing, and the third housing is The two housings are provided with a first locking port, and there is a locked state or an unlocked state between the first housing and the second housing. In the locked state, the first locking port of the self-locking mechanism The locking tongue is inserted into the first locking port; in the unlocked state, the first locking tongue of the self-locking mechanism is separated from the first locking port; the power supply is electrically connected to the mainboard and the memory alloy part , the mainboard is used to control the power supply and the memory alloy part to be powered on or off, so that the memory alloy part shrinks or resets.
The electronic device according to claim 15, wherein when the power supply is energized and the memory alloy part is energized, the memory alloy part contracts to drive the first lock tongue to disengage from the first locking opening; When the power supply and the memory alloy part are cut off, the memory alloy part is reset so that the first lock tongue is inserted into the first locking port.
The electronic device according to claim 16, further comprising a stroke detection device electrically connected to the motherboard, the stroke detection device being used to detect the relative position of the second housing to the first housing. sliding position when the second housing is relative to the first housing When sliding to the required locking position, the stroke detection device detects the position of the second housing and sends a signal to the mainboard. The mainboard receives the signal and controls the power supply and the memory alloy part to be powered off. The memory alloy piece is reset, and the first elastic piece pushes against the first lock tongue and moves until the first lock tongue is inserted into the first locking port.
The electronic device according to claim 16, further comprising a stroke detection device electrically connected to the motherboard, the stroke detection device being used to detect the relative position of the second housing to the first housing. position, and calculates the time required for the second housing to move to the locking position relative to the first housing, and the stroke detection device sends a signal to the mainboard, and the mainboard receives the signal and controls the The power supply and the memory alloy part are cut off, the memory alloy part is reset, the first elastic part pushes the first lock tongue to move, and at the same time, the second shell continues to move relative to the first shell. The body moves until the first locking tongue is facing the first locking opening, and the first locking tongue is inserted into the first locking opening.
The electronic device according to claim 16, further comprising a driving member electrically connected to the mainboard, the mainboard controlling the driving member to drive the second housing relative to the first housing. move.
The electronic device according to claim 15, wherein the second housing is provided with a plurality of first locking openings along a second direction, and the second direction is parallel to and opposite to the second housing. In the sliding direction of the first housing, the first lock tongue can be selectively inserted into one of the plurality of first locking openings.