Rotating shaft mechanism and display terminal

Abstract

The embodiment of the invention provides a rotating shaft mechanism and a display terminal, relates to the technical field of folding display, and is used for relieving the problem that a display screen is extruded at a folding position in the folding process of the folding display terminal. The rotating shaft mechanism comprises a main shaft (200), a first fixing frame (211), a second fixing frame, a first rotating arm and a second rotating arm. The first fixing frame (211) and the second fixing frame are located on the two sides of the main shaft (200) respectively. In addition, the rotating center of the first rotating part of the first rotating arm and the axis of the first rotating part are arranged in a staggered mode. The rotating center of the second rotating part of the second rotating arm and the axis of the second rotating part are arranged in a staggered mode. The first distance H1 between the rotating center of the first rotating part and the rotating center of the second rotating part is larger than the second distance between the axis of the first rotating part and the axis of the second rotating part. The first rotating arm and the second rotating arm can form a larger space for accommodating the folding part of the display screen.

Description

Technical Field

[0001] This application relates to the field of foldable display technology, and in particular to a hinge mechanism and a display terminal. Background Technology

[0002] With the continuous development of display technology, foldable display terminals are gradually becoming a development trend for future mobile electronic products. When unfolded, foldable display terminals offer a larger display area, enhancing the viewing experience. When folded, they achieve a smaller size, making them easy for users to carry. However, during the folding process, the display screen is compressed at the folding point, reducing its lifespan and reliability. Summary of the Invention

[0003] This application provides a hinge mechanism and a display terminal to alleviate the problem of the display screen being squeezed at the folding position during the folding process of the folding display terminal.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] One aspect of this application provides a rotating shaft mechanism, including a main shaft, a first fixed frame, a second fixed frame, a first rotating arm, and a second rotating arm. The main shaft extends along a first direction. Along a second direction, the first fixed frame and the second fixed frame are respectively located on both sides of the main shaft, and the second direction is perpendicular to the first direction. Furthermore, the first rotating arm includes a first rotating portion and a first extended portion connected together. The first extended portion is drive-connected to the first fixed frame. The first rotating portion is rotatably connected to the main shaft, and the rotation center of the first rotating portion is offset from its axis. Along the second direction, the first rotating arm and the second rotating arm are respectively located on both sides of the main shaft, and the first rotating arm and the second rotating arm are drive-connected. The second rotating arm includes a second rotating portion and a second extended portion connected together. The second rotating portion is rotatably connected to the main shaft, and the rotation center of the second rotating portion is offset from its axis. A first distance H1 exists between the rotation centers of the first and second rotating portions, and a second distance H2 exists between the axes of the first and second rotating portions, where H1 > H2.

[0006] In this configuration, since the first and second rotating parts are rotatably connected to the main shaft and are also drive-connected, the rotation of the first rotating part relative to the main shaft can drive the rotation of the second rotating part relative to the main shaft. Furthermore, the first extended portion is drive-connected to the first fixed frame, and the second extended portion is drive-connected to the second fixed frame. Therefore, during the rotation of the first and second rotating parts relative to the main shaft, the first extended portion can drive the first fixed frame, and the second extended portion can drive the second fixed frame to rotate relative to the rotating shaft, thereby achieving the folding and flattening of the rotating shaft mechanism. Additionally, the rotation center of the first rotating part is offset from its axis, and the rotation center of the second rotating part is also offset from its axis, with a first distance H1 between them. A second distance H2, where H1 > H2, is between the axes of the first and second rotating parts. Therefore, when the rotating shaft mechanism is in the closed state, the rotation center of the first rotating part faces outward (i.e., away from the second rotating part), and the axis of the first rotating part faces inward (i.e., closer to the second rotating part). Similarly, the rotation center of the second rotating part faces outward (i.e., away from the first rotating part), and the axis of the second rotating part faces inward (i.e., closer to the first rotating part), so that both the first and second rotating parts are eccentrically arranged rotating components. Based on this, for a scheme where neither rotating arm is eccentrically arranged, the distance between the two rotating arms is the distance between the rotation centers of the two rotating arms. As display terminals become increasingly thinner and lighter, the width of the main shaft becomes smaller and smaller, resulting in a smaller distance between the two rotating arms and the display screen when the display terminal is folded, thus causing pressure on the display screen. However, in the hinge mechanism provided in this application embodiment, both the first and second rotating parts are eccentrically arranged. Therefore, when the first and second rotating parts rotate relative to the main shaft, so that the display terminal with the hinge mechanism is in a folded state, since H1 > H2, the larger first distance H1 can determine the distance between the first rotating arm (or the second rotating arm) and the display screen, while the smaller second distance H2 will not affect the distance. However, if the first and second rotating parts are not eccentrically positioned, the second distance H2 determines the distance between the first rotating arm (or the second rotating arm) and the display screen. Therefore, compared to the scheme where the first and second rotating parts are not eccentrically positioned, the eccentrically positioned first and second rotating parts in this application make the first distance H1 larger than the second distance H1, thus increasing the distance between the first and second rotating arms. In this case, even if the dimension of the main shaft along the second direction is small, the increased distance between the first and second rotating arms creates a larger space for accommodating the folding portion of the display screen, alleviating the problem of the display screen being squeezed at the folding position during the folding process of the folding display terminal.

[0007] In one optional embodiment, the first rotating part has a first cam surface. The first cam surface has at least one first protrusion. The first cam surface has a first region and a second region, the wall thickness of the first rotating part in the first region is greater than the wall thickness of the first rotating part in the second region; the first protrusion is located in the first region. The rotating shaft mechanism further includes a first damping member disposed within the main shaft. The side of the first damping member facing the first rotating part has a second cam surface, the second cam surface having at least one second protrusion. The shape of the second cam surface matches that of the first cam surface, and the at least one second protrusion is used to abut against the at least one first protrusion. The side of the first damping member opposite to the first rotating arm is elastically connected to the main shaft. Compared to the first protrusion being disposed in the second region, the width of the first protrusion located in the first region is larger. In this case, when the rotating shaft mechanism is in the above-mentioned fully flattened state, fully closed state, and hovered state, a larger contact area can be obtained between the second protrusion of the first damping member and the first protrusion of the first rotating part, thereby increasing the above-mentioned assist and damping force provided by the first damping member to the first rotating part, effectively alleviating the problem of decreased assist and damping force caused by the ultra-thinning of the display terminal.

[0008] In one optional embodiment, either the first protrusion or the second protrusion includes a top surface and side slopes located on both sides of the top surface. When the rotating shaft mechanism is in a fully flattened state and a fully closed state, the side slopes of the first protrusion abut against the side slopes of the second protrusion, and the first cam surface engages with the second cam surface. When the rotating shaft mechanism is suspended between the fully flattened state and the fully closed state, the top surface of the first protrusion abuts against the top surface of the second protrusion. Thus, by controlling the abutment position of the first and second protrusions, the rotating shaft mechanism can be positioned in the aforementioned fully flattened state, fully closed state, and suspended state.

[0009] In one optional embodiment, the second rotating part has a third cam surface, and the third cam surface has at least one third protrusion. The third cam surface has a third region and a fourth region. The wall thickness of the second rotating part in the third region is greater than the wall thickness of the second rotating part in the fourth region, and the third protrusion is located in the third region. The first damping member has a fourth cam surface on the side facing the second rotating part. The fourth cam surface has at least one fourth protrusion. The shape of the fourth cam surface matches that of the third cam surface, and the at least one fourth protrusion is used to abut against the at least one third protrusion. Similarly, when the rotating shaft mechanism is in the above-mentioned fully flattened state, fully closed state, and hovered state, a larger contact area can be obtained between the fourth protrusion of the first damping member and the third protrusion of the second rotating part, thereby increasing the above-mentioned assist and damping force provided by the first damping member to the second rotating part, effectively alleviating the problem of decreased assist and damping force caused by the ultra-thinning of the display terminal.

[0010] In one optional embodiment, the first rotating part has a first gear surface on the side facing the second rotating part. The second rotating part has a second gear surface on the side facing the first rotating part. The rotating shaft mechanism also includes a first gear and a second gear. The first gear is located between the first rotating part and the second rotating part, and meshes with the first gear surface. The second gear is located between the first rotating part and the second rotating part, and meshes with the second gear surface, thus providing a transmission connection between the first gear and the second gear. Based on this, when the first rotating part rotates, it can drive the first gear meshing with the first gear surface on the first rotating part to rotate. Furthermore, the first gear can drive the second gear to rotate, and drive the second rotating part meshing with the second gear via the second gear surface to rotate, thereby realizing a transmission connection between the first rotating arm and the second rotating arm.

[0011] In one optional embodiment, the rotating shaft mechanism further includes at least one elastic element, which includes a first elastic element, a second elastic element, and at least one intermediate elastic element. The first elastic element is disposed within the main shaft along a first direction, connected to a first damping element, and its axis coincides with the rotation center of the first rotating part. The second elastic element is disposed within the main shaft along the first direction, connected to the first damping element, and its axis coincides with the rotation center of the second rotating part. At least one intermediate elastic element is disposed within the main shaft along the first direction, located between the first and second elastic elements, and connected to the first damping element. The axis of any intermediate elastic element is offset from the rotation centers of the first and second gears. As can be seen from the above, the first and second rotating parts are eccentrically arranged; therefore, the first distance H1 between the rotation centers of the first and second rotating parts is greater than the second distance between their axes. When the axis of the first elastic element coincides with the rotation center of the first rotating part, and the axis of the second elastic element coincides with the rotation center of the second rotating part, the distance between the axes of the first and second elastic elements is also the aforementioned first distance H1. In this case, by providing the aforementioned intermediate elastic element, since the axis of the intermediate elastic element is offset from the rotation centers of the first and second gears, the size of the intermediate elastic element is not affected by the rotation center positions of the first and second gears. Therefore, a larger intermediate elastic element can be selected to improve the space utilization of the rotating shaft mechanism.

[0012] In one optional embodiment, the axis of any intermediate elastic element coincides with the rotation center of the first gear and the second gear. The size of the first intermediate elastic element can be the same as that of the first and second elastic elements, which helps to simplify the product structure.

[0013] In one optional embodiment, the rotating shaft mechanism further includes a first connecting shaft and a second connecting shaft. Along a first direction, the first connecting shaft passes through a first rotating portion and a first elastic member, and is connected to a main shaft. A first rotating arm is rotatably connected to the main shaft via the first connecting shaft. The axis of the first elastic member can coincide with the axis of the first connecting shaft, thereby coinciding with the rotation center of the first rotating portion. Along the first direction, the second connecting shaft passes through a second rotating portion and a second elastic member, and is connected to the main shaft. A second rotating arm is rotatably connected to the main shaft via the second connecting shaft. The axis of the second elastic member can coincide with the axis of the second connecting shaft, thereby coinciding with the rotation center of the second rotating portion.

[0014] In one optional embodiment, at least one intermediate elastic element includes a first intermediate elastic element and a second intermediate elastic element. The axis of the first intermediate elastic element is offset from the rotation center of the first gear. The axis of the second intermediate elastic element is also offset from the rotation center of the second gear. Similarly, the dimensions of the first and second intermediate elastic elements are not dependent on the rotation center positions of the first and second gears, allowing for the selection of larger first and second intermediate elastic elements to improve the space utilization of the rotating shaft mechanism.

[0015] In one optional embodiment, the rotating shaft mechanism further includes a third connecting shaft, a fourth connecting shaft, a fifth connecting shaft, and a sixth connecting shaft. Along a first direction, a first gear passes through the third connecting shaft, and the first gear rotates around the third connecting shaft. The third connecting shaft is connected to a first damping element. The axis of the third connecting shaft can be the rotation center of the first gear. Along the first direction, a second gear passes through the fourth connecting shaft, and the second gear rotates around the fourth connecting shaft. The fourth connecting shaft is connected to the first damping element. The axis of the fourth connecting shaft can be the rotation center of the second gear. Along the first direction, a first intermediate elastic element passes through the fifth connecting shaft, and the fifth connecting shaft is connected to the first damping element. The axis of the fifth connecting shaft can be the axis of the first intermediate elastic element. Along the first direction, a second intermediate elastic element passes through the sixth connecting shaft, and the sixth connecting shaft is connected to the first damping element. The axis of the sixth connecting shaft can be the axis of the second intermediate elastic element. The axes of the third and fourth connecting shafts are located between the axes of the fifth and sixth connecting shafts. This allows the axis of the first intermediate elastic element to be misaligned with the rotation center of the first gear, and the axis of the second intermediate elastic element to be misaligned with the rotation center of the second gear. Furthermore, when H1 > H2, the dimensions of the first and second intermediate elastic elements can be increased, thereby increasing the force exerted by the first damping element on the first and second rotating arms.

[0016] In one optional embodiment, the rotating shaft mechanism further includes at least one elastic element, comprising a first elastic element, a second elastic element, and at least one intermediate elastic element. The first elastic element is disposed within the main shaft along a first direction and is connected to a first damping element. The axis of the first elastic element is offset from the rotation center of the first rotating part. The second elastic element is disposed within the main shaft along the first direction and is connected to the first damping element. The axis of the second elastic element is offset from the rotation center of the second rotating part. At least one intermediate elastic element is disposed within the main shaft along the first direction, between the first and second elastic elements. The intermediate elastic element is connected to the first damping element, and the axis of one intermediate elastic element coincides with the rotation center of the first gear or the second gear. In this case, depending on the internal structural space of the rotating shaft mechanism, the first elastic element can be positioned closer to or further away from the first intermediate elastic element along the second direction, and the second elastic element can be positioned closer to or further away from the second intermediate elastic element. The technical effect of the offset arrangement of the first and second elastic elements described above is the same as described above and will not be repeated here.

[0017] In one optional embodiment, the rotating shaft mechanism further includes a third rotating arm and a fourth rotating arm. The third rotating arm includes a third rotating portion and a third extended portion connected together. The third extended portion is drivenly connected to the first fixed frame, and the third rotating portion is rotatably connected to the main shaft. The rotation center of the third rotating portion coincides with the rotation center of the first rotating portion, and the axis of the third rotating portion coincides with the axis of the first rotating portion, so that the third rotating portion is eccentrically positioned. Along the second direction, the third rotating arm and the fourth rotating arm are located on opposite sides of the main shaft, and the third rotating arm and the fourth rotating arm are drivenly connected. The fourth rotating arm includes a fourth rotating portion and a fourth extended portion connected together. The fourth extended portion is drivenly connected to the second fixed frame, and the fourth rotating portion is rotatably connected to the main shaft. The rotation center of the fourth rotating portion coincides with the rotation center of the second rotating portion, and the axis of the fourth rotating portion coincides with the axis of the second rotating portion, so that the fourth rotating portion is eccentrically positioned. The arrangement and technical effects of the third rotating arm and the first rotating arm are the same, and the arrangement and technical effects of the fourth rotating arm and the second rotating arm are the same, and will not be repeated here. In this case, adding rotating arms on both sides of the main shaft makes it easier and smoother for the rotating shaft mechanism to flatten and fold.

[0018] In one optional embodiment, the third rotating part has a fifth cam surface. The fifth cam surface has at least one fifth protrusion, a fifth region, and a sixth region. The wall thickness of the third rotating part in the fifth region is greater than the wall thickness of the third rotating part in the sixth region; the fifth protrusion is located in the fifth region. Furthermore, the shaft mechanism also includes a second damping element and at least one elastic element. The second damping element is disposed within the main shaft. The side of the second damping element facing the third rotating part has a sixth cam surface, and the sixth cam surface has at least one sixth protrusion. The shape of the sixth cam surface matches that of the fifth cam surface, and the at least one fifth protrusion is used to abut against the at least one sixth protrusion. At least one elastic element is provided, with both ends connected to the first and second damping elements. The second damping element can serve as a damping structure in the aforementioned shaft mechanism for providing the aforementioned assist and damping forces. Similarly, the at least one elastic element can provide elastic force to the second damping element so that the second damping element can abut against the third rotating part. The arrangement of the fifth and sixth regions is similar to that of the first and second regions, and will not be repeated here. In addition, the fifth protrusion is located in the fifth region with a larger wall thickness in the third rotating part, which increases the contact area between the second damping member and the third rotating part when the second damping member comes into contact with the third rotating part.

[0019] In one optional embodiment, when the rotating shaft mechanism is in a fully flattened state and a fully closed state, the side slope of the fifth protrusion abuts against the side slope of the sixth protrusion, and the sixth cam surface can engage with the fifth cam surface. Furthermore, when the rotating shaft mechanism is suspended between a fully flattened state and a fully closed state, the top surface of the fifth protrusion abuts against the top surface of the sixth protrusion. In this way, by controlling the abutment position of the sixth and fifth protrusions, the rotating shaft mechanism can be positioned in the aforementioned fully flattened state, fully closed state, and suspended state.

[0020] In one optional embodiment, the fourth rotating part has a seventh cam surface. The seventh cam surface has at least one seventh protrusion, a seventh region, and an eighth region. The wall thickness of the fourth rotating part in the seventh region is greater than the wall thickness of the fourth rotating part in the eighth region, and the seventh protrusion is located in the seventh region. The second damping member has an eighth cam surface on the side facing the fourth rotating part, and the eighth cam surface has at least one eighth protrusion. The shape of the eighth cam surface matches that of the seventh cam surface, and the at least one seventh protrusion is used to abut against the at least one eighth protrusion. Similarly, the at least one elastic member can provide elastic force to the second damping member so that the second damping member can abut against the fourth rotating part. The arrangement of the seventh and eighth regions is similar to that of the first and second regions, and will not be repeated here. Furthermore, the seventh protrusion is located in the seventh region of the fourth rotating part, which has a larger wall thickness, increasing the contact area between the second damping member and the fourth rotating part when they abut against each other.

[0021] In one optional embodiment, when the rotating shaft mechanism is in a fully flattened state and a fully closed state, the side slope of the seventh protrusion abuts against the side slope of the eighth protrusion, and the seventh cam surface can engage with the eighth cam surface. Furthermore, when the rotating shaft mechanism is suspended between a fully flattened state and a fully closed state, the top surface of the seventh protrusion abuts against the top surface of the eighth protrusion. In this way, by controlling the abutment position of the seventh and eighth protrusions, the rotating shaft mechanism can be positioned in the aforementioned fully flattened state, fully closed state, and suspended state.

[0022] In one optional embodiment, the third rotating part has a ninth cam surface, the ninth cam surface has at least one ninth protrusion, the ninth cam surface has a ninth region and a tenth region, the wall thickness of the third rotating part in the ninth region is greater than the wall thickness of the third rotating part in the tenth region, and the ninth protrusion is located in the ninth region. The fourth rotating part has a tenth cam surface, the tenth cam surface has at least one tenth protrusion, the tenth cam surface has an eleventh region and a twelfth region, the wall thickness of the fourth rotating part in the eleventh region is greater than the wall thickness of the fourth rotating part in the twelfth region, and the tenth protrusion is located in the eleventh region. Furthermore, the rotating shaft mechanism also includes a stop. The stop is located inside the main shaft and connected to the main shaft. The stop is disposed on the side of the third and fourth rotating arms opposite to the second damping member. The stop has an eleventh cam surface and a twelfth cam surface. The eleventh cam surface has at least one eleventh protrusion. The shape of the eleventh cam surface matches that of the ninth cam surface, and the at least one eleventh protrusion is used to abut against the at least one ninth protrusion. The twelfth cam surface has at least one twelfth protrusion, and the shape of the twelfth cam surface matches that of the tenth cam surface. The at least one twelfth protrusion is used to abut against the at least one tenth protrusion. When the second damping member applies a force to the first and fourth rotating arms under the action of the elastic member, the stop member can limit the third and fourth rotating arms, reducing the probability of the first and fourth rotating arms moving along the first direction. Furthermore, the arrangement of the ninth, tenth, eleventh, and twelfth regions is similar to that of the first and second regions, and will not be repeated here. Similarly, the ninth and tenth protrusions are located in areas with greater wall thickness, increasing the contact area between the stop member 230 and the third and fourth rotating parts when the stop member abuts against them.

[0023] In one optional embodiment, when the rotating shaft mechanism is in a fully flattened state and a fully closed state, the side slope of the ninth protrusion abuts against the side slope of the eleventh protrusion, and the ninth cam surface can engage with the eleventh cam surface. The side slope of the tenth protrusion abuts against the side slope of the twelfth protrusion, and the tenth cam surface can engage with the twelfth cam surface. Furthermore, when the rotating shaft mechanism is suspended between a fully flattened state and a fully closed state, the top surface of the ninth protrusion abuts against the top surface of the eleventh protrusion, and the top surface of the tenth protrusion abuts against the top surface of the twelfth protrusion. In this way, by controlling the abutment positions of the ninth and eleventh protrusions, and the abutment positions of the tenth and twelfth protrusions, the rotating shaft mechanism can be placed in the aforementioned fully flattened state, fully closed state, and suspended state.

[0024] In one optional embodiment, the first extension portion is slidably connected to the first fixed frame, and the second extension portion is also slidably connected to the first fixed frame. In this case, while the first rotating arm rotates relative to the main shaft via the first rotating portion, the first rotating arm can also slide relative to the first fixed frame in a second direction via the first extension portion, allowing the first rotating arm to move closer to or away from the main shaft, thereby causing the first fixed frame to gradually flip to a flattened (or folded) state. Furthermore, the second rotating arm can also slide relative to the second fixed frame in a second direction via the second extension portion, allowing the second rotating arm to move closer to or away from the main shaft, thereby causing the second fixed frame to gradually flip to a flattened (or folded) state, thus realizing the folding and flattening of the hinge mechanism and the entire display terminal.

[0025] Another aspect of this application provides a display terminal, including a display screen, a first housing, a second housing, and any of the hinge mechanisms described above. The hinge mechanism is located between the first housing and the second housing, and the display screen is connected to the first housing and the second housing, covering the hinge mechanism. The above-described display terminal has the same technical effects as the hinge mechanism provided in the foregoing embodiments, and will not be repeated here. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a display terminal provided in an embodiment of this application;

[0027] Figure 2 This is a schematic diagram of another display terminal provided in an embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the structure of another display terminal provided in an embodiment of this application;

[0029] Figure 4 For along Figure 3 A sectional view obtained by cutting along the dashed lines A1-A2 in the figure;

[0030] Figure 5 This is a schematic diagram of a folded state of a display terminal provided in an embodiment of this application;

[0031] Figure 6 This is a schematic diagram of another folded state of the display terminal provided in an embodiment of this application;

[0032] Figure 7 This is an exploded view of a display terminal provided in an embodiment of this application;

[0033] Figure 8 for Figure 7 An exploded structural diagram of a central pivot mechanism;

[0034] Figure 9 for Figure 7 Another exploded view of the central shaft mechanism;

[0035] Figure 10 for Figure 7 A schematic diagram of a central pivot mechanism;

[0036] Figure 11 For along Figure 3 Another sectional view obtained by cutting along the dashed lines A1-A2 in the diagram;

[0037] Figure 12 For along Figure 9 The schematic diagram obtained by cutting through the dashed lines A3-A4 in the diagram;

[0038] Figure 13 A schematic diagram of a display terminal provided for related technologies;

[0039] Figure 14 for Figure 10 A schematic diagram obtained from direction B2 in the diagram;

[0040] Figure 15 for Figure 14 A schematic diagram obtained from direction B3;

[0041] Figure 16 along Figure 15 Enlarged diagram at point A3 in the diagram;

[0042] Figure 17 for Figure 14 A schematic diagram obtained from direction B4 in the diagram;

[0043] Figure 18 for Figure 7 Another structural schematic diagram of the central shaft mechanism;

[0044] Figure 19 for Figure 14 Another schematic diagram obtained from direction B3;

[0045] Figure 20 for Figure 14 Another schematic diagram obtained from direction B3;

[0046] Figure 21 for Figure 7 Another structural schematic diagram of the central shaft mechanism;

[0047] Figure 22 for Figure 7 Another structural diagram of the central shaft mechanism;

[0048] Figure 23 for Figure 22 A schematic diagram obtained from direction B5 in the diagram;

[0049] Figure 24 for Figure 22 Another schematic diagram obtained from direction B5 in the diagram;

[0050] Figure 25 for Figure 7 Another structural diagram of the central shaft mechanism;

[0051] Figure 26 for Figure 7 Another structural diagram of the central shaft mechanism;

[0052] Figure 27 for Figure 7 Another structural diagram of the central shaft mechanism;

[0053] Figure 28 for Figure 7 Another structural diagram of the central shaft mechanism;

[0054] Figure 29 for Figure 7 Another structural diagram of the central shaft mechanism;

[0055] Figure 30 for Figure 29 A schematic diagram obtained from direction B6 in the diagram;

[0056] Figure 31 for Figure 29 Another schematic diagram obtained from direction B6;

[0057] Figure 32 for Figure 29 A schematic diagram obtained from direction B7 in the diagram;

[0058] Figure 33 for Figure 29 Another schematic diagram obtained from direction B7;

[0059] Figure 34 for Figure 29Another schematic diagram obtained from direction B7;

[0060] Figure 35 for Figure 29 Another schematic diagram obtained from direction B6.

[0061] Figure label:

[0062] 01-Display terminal; 10-Display screen; 11-First housing; 12-Second housing; 20-Rotating shaft mechanism; 13-Third housing; 200-Main shaft; 201-First rotating arm; 202-Second rotating arm; 203-Third rotating arm; 204-Fourth rotating arm; 211-First fixing frame; 212-Second fixing frame; 2001-Shaft cover; 2002-Shaft seat; 2011-First rotating part; 2012-First extension part; 2021-Second rotating part; 2022-Second extension part; 31-First connecting shaft; 3 2-Second connecting shaft; 21-First gear; 22-Second gear; S1-First gear surface; S2-Second gear surface; 40-Swing arm; 221-First damping element; 60-Elastic element; C1-First cam surface; 51-First protrusion; C3-Third cam surface; 53-Third protrusion; p1-Top surface; p2-Side slope; C2-Second cam surface; 52-Second protrusion; C4-Fourth cam surface; 54-Fourth protrusion; 701-First region; 702-Second region; 703-Third region; 704-Fourth region; 60 1-First elastic element; 602-Second elastic element; 610-Intermediate elastic element; 603-First intermediate elastic element; 604-Second intermediate elastic element; 33-Third connecting shaft; 34-Fourth connecting shaft; 35-Fifth connecting shaft; 36-Sixth connecting shaft; 2031-Third rotating part; 2032-Third extended part; 2041-Fourth rotating part; 2042-Fourth extended part; 222-Second damping element; 705-Fifth region; 706-Sixth region; 707-Seventh region; 708-Eighth region; C5-Fifth convex part Wheel surface; C7 - Seventh cam surface; 55 - Fifth protrusion; 57 - Seventh protrusion; C8 - Eighth cam surface; 58 - Eighth protrusion; C6 - Sixth cam surface; 56 - Sixth protrusion; C9 - Ninth cam surface; 709 - Ninth region; 710 - Tenth region; C10 - Tenth protrusion; 711 - Eleventh region; 712 - Twelfth region; 59 - Ninth protrusion; 510 - Tenth protrusion; 230 - Stop; C11 - Eleventh cam surface; 511 - Eleventh protrusion; C12 - Twelfth cam surface; 512 - Twelfth protrusion. Detailed Implementation

[0063] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0064] In the following description, the terms "first," "second," etc., are used for descriptive convenience only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0065] In this application, unless otherwise expressly specified and limited, the term "connection" shall be interpreted broadly. For example, "connection" may be a fixed mechanical connection, a detachable mechanical connection, or an integral part; or, "connection" may be a direct connection or an indirect connection through an intermediate medium.

[0066] In this application embodiment, the description of "vertical" indicates approximate verticality within a certain allowable error range. This error range can be a range with an angle of deviation from absolute verticality less than or equal to 5°, 8°, or 10°, respectively, without specific limitations. In this application embodiment, directional terms such as "left" and "right" can be defined relative to the orientation of the components shown in the accompanying drawings. It should be understood that these directional terms can be relative concepts, used for relative description and clarification, and can change accordingly based on changes in the orientation of the components in the accompanying drawings.

[0067] In the accompanying drawings of the embodiments of this application, components are indicated by arrowed guide lines; parts are indicated by guide lines only.

[0068] This application provides a display terminal that can be applied to various communication systems or protocols, such as Bluetooth (BT) communication technology, Global Positioning System (GPS) communication technology, Global System for Mobile Communication (GSM) communication technology, Wireless Fidelity (WiFi) communication technology, Wideband Code Division Multiple Access (WCDMA) communication technology, Long Term Evolution (LTE), 5G communication technology, and other future communication technologies.

[0069] The display terminal in this application embodiment can be a mobile phone, tablet computer, laptop computer, smart home device, smart wearable device (e.g., smartwatch, smart bracelet, smart glasses, smart helmet), virtual reality (VR) display terminal, augmented reality (AR) display terminal, etc. The display terminal can also be a handheld device with wireless communication capabilities, a computing device, or other processing device connected to a wireless modem, an in-vehicle device, a display terminal in a 5G network, or a display terminal in a future evolved public land mobile network (PLMN), etc., and this application embodiment is not limited to these categories.

[0070] In some embodiments, the display terminal may have a display function. In this case, the display terminal may include a display screen and a processor electrically connected to the display screen. The processor may provide display data to the display screen to drive the display screen to display images. For example, the processor may include one or more processing units, such as an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural network processing unit (NPU). Different processing units may be independent devices or integrated into one or more processors.

[0071] For the sake of clarity, the following examples use a foldable phone as the display terminal. In this case, such as Figure 1As shown, the display terminal 01 may include a display screen 10. In some embodiments of this application, the display screen 10 may be a self-emissive display screen, such as an organic light-emitting diode (OLED) display screen, a micro (or mini) light-emitting diode (LED) display screen, or a quantum dot light-emitting diode (QLED) display screen, etc. Alternatively, in other embodiments of this application, the display screen 10 may also be a liquid crystal display (LCD) screen that requires a backlight.

[0072] Furthermore, in order to support the display screen 10 during the folding or flattening process of the display terminal 01, in some embodiments, the display terminal 01 may also include two housings. For example, the two housings may be a first housing 11 and a second housing 12, and a housing disposed on the back of the display screen 10 (the surface opposite to the display surface of the display screen 10), such as... Figure 2 The rotating shaft mechanism 20 is shown. The rotating shaft mechanism 20 is located between the first housing 11 and the second housing 12, and the first housing 11 and the second housing 12 can be rotatably connected to the rotating shaft mechanism 20, so that the first housing 11 and the second housing 12 can rotate around the rotating shaft mechanism 20 respectively. Figure 1 The display screen 10 shown is connected to the first housing 11 and the second housing 12, and the display screen 10 can cover the rotating shaft mechanism 20.

[0073] For example, either the first housing 11 or the second housing 12 described above may include a middle frame and a rear housing located on the side of the middle frame opposite to the display screen 10. The middle frame and the rear housing may enclose a receiving space for accommodating components such as circuit boards, batteries, cameras, and sensors.

[0074] Based on this, when display terminal 01 is in such a state Figure 1 In the flattened state shown, the included angle β between the first housing 11 and the second housing 12 is or approximately 180°. Alternatively, where a certain angular tolerance is permissible, the included angle β between the first housing 11 and the second housing 12 can also be a value such as 165°, 177°, or 185°. In this case, the surfaces of the first housing 11 and the second housing 12 facing the display screen 10 can be on or approximately on the same plane. For ease of explanation, the following example uses the pivot mechanism 20 and the display terminal 01 in a fully flattened state, with the included angle β between the first housing 11 and the second housing 12 being 180° as an example.

[0075] Alternatively, if the initial state of display terminal 01 is as follows: Figure 1 In the flattened state shown, the user can hold the display terminal 01 and apply external force to the first housing 11 and the second housing 12 to fold the first housing 11 and the second housing 12, causing the first housing 11 and the second housing 12 to rotate relative to the pivot mechanism 20, thereby folding the display screen 10, and finally placing the display terminal 01 in the flattened state. Figure 3 The closed state is shown.

[0076] For example, in some embodiments of this application, the folded state of the display terminal 01 may refer to the included angle β between the first housing 11 and the second housing 12 being less than 180°. For example... Figure 3 As shown, the included angle β between the first housing 11 and the second housing 12 can be 0°. In this case, the folded state of the display terminal 01 can also be called the closed state. Alternatively, if a certain angular tolerance is allowed, the above-mentioned closed state can also be that the included angle β between the first housing 11 and the second housing 12 is 2° or 5°, etc. For ease of explanation, the following example is given with the rotating shaft mechanism 20 and the display terminal 01 in the fully closed state, and the included angle β between the first housing 11 and the second housing 12 being 0°.

[0077] To illustrate the positional relationships of the various components in display terminal 01, an XYZ coordinate system is established in the accompanying drawings. For example, the XY plane can be positioned relative to display terminal 01 as follows: Figure 1 In the flattened state shown, the display surface (the surface used to display images) of the display screen 10 is parallel. The Z direction is the stacking direction between the first housing 11 (or the second housing 12) and the display screen 10, that is, the Z direction can be the thickness of the display terminal 01 or the thickness direction of the aforementioned housing. The Y direction can be the extension direction of the pivot mechanism 20, and the X direction can be perpendicular to the extension direction of the pivot mechanism 20. For ease of explanation, the Y direction will be referred to as the first direction Y, and the X direction will be referred to as the second direction X.

[0078] Among them, such as Figure 3 As shown, in some other embodiments of this application, when the display terminal 01 is in a folded state, the display screen 10 can be wrapped between the first housing 11 and the second housing 12. This display terminal 01 can be referred to as an inward-folding display terminal. In this case, as... Figure 4 (for the following) Figure 3 As shown in the cross-sectional view obtained by cutting along the dashed lines A1-A2, in the folded state of the display terminal 01, the display screen 10 can be folded into a teardrop shape or a "U" shape at the folded position. This application does not limit this.

[0079] Alternatively, in some other embodiments of this application, the display terminal 01 may further include three or more housings. For example, such as... Figure 5 As shown, when the display terminal 01 includes three housings, such as a first housing 11, a second housing 12, and a third housing 13, the first housing 11, the second housing 12, and the third housing 13 can be folded into a "G" shape. In this case, the display screen 10 can be folded into a teardrop shape or a "U" shape in the folded position. Alternatively, as another example, such as... Figure 6 As shown, when the first housing 11, the second housing 12, and the third housing 13 are all in the closed state, the first housing 11, the second housing 12, and the third housing 13 can be folded into an "S" shape. In this case, the portion of the display screen 10 wrapped between the third housing 13 and the second housing 12 can be folded into the aforementioned teardrop shape or "U" shape at the folding position.

[0080] The above is an illustrative example of a display terminal 01 comprising two or three housings. In other embodiments of this application, the display terminal 01 may include three or more housings. This application does not limit the number of housings, as long as there are two or more. For any of the above-mentioned display terminal 01s, the aforementioned hinge mechanism 20 may be provided between two adjacent housings. To alleviate the problem of the display screen 10 being squeezed at the folding position during the folding process of the display terminal 01, the following mainly takes a two-fold display terminal 01 with an inward folding design as an example, considering the display terminal 01 in the folded state... Figure 4 The structure of the rotating shaft mechanism 20 between the first housing 11 and the second housing 12 shown is illustrated by way of example. Furthermore, Figure 5 The rotating shaft mechanism between the third housing 13 and the first housing 11, the rotating shaft mechanism between the second housing 12 and the first housing 11, and the rotating shaft mechanism between the second housing 12 and the first housing 11 shown are also mentioned. Figure 6 The rotating shaft mechanism between the third housing 13 and the second housing 12 shown can be obtained in the same way, and will not be described in detail again.

[0081] The structure of the rotating shaft mechanism 20 is illustrated below. In some embodiments of this application, such as… Figure 7 As shown, the rotating shaft mechanism 20 may include a main shaft 200, a first rotating arm 201, a second rotating arm 202, a first fixed frame 211, and a second fixed frame 212. The first rotating arm 201 and the second rotating arm 202 may be located on opposite sides of the main shaft 200 along the second direction X. Similarly, the first fixed frame 211 and the second fixed frame 212 may be located on opposite sides of the main shaft 200 along the second direction X. The main shaft 200 extends along the first direction Y, and the extension direction of the main shaft 200 is the same as the extension direction of the rotating shaft mechanism 20.

[0082] On this basis, continue as Figure 7As shown, the first rotating arm 201 is positioned close to the main shaft 200 relative to the first fixed frame 211. The first fixed frame 211 can be connected to the first housing 11. For example, the first fixed frame 211 and the first housing 11 can be detachably connected by means of threaded connection or other methods. Alternatively, the first fixed frame 211 and the first housing 11 can be connected by adhesive bonding or other methods. Alternatively, the first fixed frame 211 can also be connected to the first housing 11 as an integral structural component through injection molding; this application does not limit this. Similarly, the second fixed frame 212 can be connected to the second housing 12. The connection method between the second fixed frame 212 and the second housing 12 can be derived similarly to the connection method between the first fixed frame 211 and the first housing 11, and will not be elaborated further here.

[0083] In addition, such as Figure 7 The first rotating arm 201 shown can be rotatably connected to the main shaft 200 around a first direction Y, and the first rotating arm 201 can also be drively connected to the first fixed frame 211. To enable the first rotating arm 201 to have the aforementioned cooperative connections with the main shaft 200 and the first fixed frame 211 respectively, in some embodiments of the application, such as… Figure 8 As shown, the first rotating arm 201 may include a first rotating portion 2011 and a first extended portion 2012 connected to each other. At least a portion of the first rotating portion 2011 may be located within the main shaft 200, and the first extended portion 2012 may be located on the side of the first rotating portion 2011 opposite to the main shaft 200 and extend in a direction opposite to the main shaft 200. The first extended portion 2012 is capable of being drivenly connected to the first fixed frame 211, and the first rotating portion 2011 is capable of being rotatably connected to the main shaft 200.

[0084] In this embodiment of the application, "transmission connection" refers to a connection between two connected components that can transmit mechanical motion or torque. Specifically, in a transmission connection, when one component moves (e.g., rotates or moves), it can drive the other component to move (e.g., rotate or move). This "transmission connection" includes, but is not limited to, sliding connections, rotating connections, fixed connections (including non-detachable and detachable connections; for example, a detachable connection can be a snap-fit ​​or threaded connection), and surface contact such as abutment or engagement.

[0085] For example, continue as follows Figure 8As shown, the first extension 2012 can be slidably connected to the first fixing frame 211. In this case, while the first rotating arm 201 rotates relative to the main shaft 200 via the first rotating part 2011, the first rotating arm 201 can also slide relative to the first fixing frame 211 along the second direction X via the first extension 2012, so that the first fixing frame 211 can move closer to or further away from the main shaft 200, thereby causing the first fixing frame 211 to gradually flip to a flattened (or folded) state. In this case, the first fixing frame 211 can be driven by the first rotating arm 201, thereby driving the first housing 11 (e.g., the first fixed frame 211 connected to the first fixing frame 211) to move. Figure 7 (As shown) rotates relative to the main shaft 200.

[0086] In addition, continue as Figure 8 As shown, the second rotating arm 202 may include a second rotating portion 2021 and a second extended portion 2022 connected to each other. Similarly, at least a portion of the second rotating portion 2021 may be located within the main shaft 200, and the second extended portion 2022 may be located on the side of the second rotating portion 2021 opposite to the main shaft 200 and extend in a direction opposite to the main shaft 200. The second rotating portion 2021 is drive-connected to the first rotating portion 2011, rotatably connected to the main shaft 200, and the second extended portion 2022 is drive-connected to the second fixed frame 212. For example, similarly, the second extended portion 2022 can be slidably connected to the second fixed frame 212.

[0087] When the first rotating arm 201 rotates relative to the main shaft 200 via the first rotating part 2011, since the first rotating part 2011 is connected to the second rotating part 2021, the first rotating part 2011 can drive the second rotating part 2021 of the second rotating arm 202 to rotate relative to the main shaft 200. Furthermore, the second rotating arm 202 can slide relative to the second fixed frame 212 along the second direction X via the second extension 2022, allowing the second fixed frame 212 to move closer to or further away from the main shaft 200, thereby gradually flipping the second fixed frame 212 to a flattened (or folded) state. In this case, the second rotating arm 202 can drive the second fixed frame 212, thereby driving the second housing 12 (e.g., the second fixed frame 212 connected to the second fixed frame 212) to rotate. Figure 7 (As shown) rotates relative to the main shaft 200, thereby causing Figure 7 The first housing 11 and the second housing 12 can rotate synchronously to achieve the folding and flattening of the rotating shaft mechanism 20 and the entire display terminal.

[0088] The above is based on Figure 8In this example, the first extension 2012 of the first rotating arm 201 is slidably connected to the first fixed frame 211 to illustrate the transmission connection between the first extension 2012 and the first fixed frame 211. Similarly, the second extension 2022 of the second rotating arm 202 is slidably connected to the second fixed frame 212 to illustrate the transmission connection between the second extension 2022 and the second fixed frame 212.

[0089] In some other embodiments of this application, the transmission connection between the first extension portion 2012 and the first fixed frame 211 can also refer to the first extension portion 2012 being rotatably connected to the first fixed frame 211. Similarly, the transmission connection between the second extension portion 2022 and the second fixed frame 212 can also refer to the second extension portion 2022 being rotatably connected to the second fixed frame 212. Alternatively, in some still embodiments of this application, when the first rotating portion 2011 of the first rotating arm 201 is rotatably connected to the main shaft 200, the first extension portion 2012 of the first rotating arm 201 can be fixedly connected to the first fixed frame 211, so that the positions of the first extension portion 2012 and the first fixed frame 211 are relatively fixed, thereby realizing the transmission connection between the first extension portion 2012 and the first fixed frame 211. Similarly, when the second rotating part 2021 of the second rotating arm 202 is rotatably connected to the main shaft 200, the second extension part 2022 of the second rotating arm 202 can be fixedly connected to the second fixed frame 212 so that the positions of the second extension part 2022 and the second fixed frame 212 are relatively fixed, so as to realize the transmission connection between the second extension part 2022 and the second fixed frame 212.

[0090] This application does not limit the transmission connection method between the first extension portion 2012 and the first fixed frame 211, or the transmission connection method between the second extension portion 2022 and the second fixed frame 212. For ease of explanation, the following examples illustrate the sliding connection between the first extension portion 2012 and the first fixed frame 211, and the sliding connection between the second extension portion 2022 and the second fixed frame 212.

[0091] This application does not limit the number of the aforementioned rotating shaft mechanisms 20. Among them, Figure 7 This example illustrates the use of a display terminal 01 having one hinge mechanism 20. In other embodiments of this application, the display terminal 01 may have two or more hinge mechanisms 20, and the main shaft 200 of the two or more hinge mechanisms 20 may be shared.

[0092] Furthermore, in order to enable the first rotating part 2011 of the first rotating arm 201 to rotate relative to the main shaft 200, in some embodiments of this application, the following continues... Figure 8As shown, the rotating shaft mechanism 20 may further include a first connecting shaft 31, which is connected to the main shaft 200. For example, the main shaft 200 may include a shaft cover 2001 and a shaft seat 2002, which are interlocked, and a receiving cavity may be formed between the shaft cover 2001 and the shaft seat 2002. Figure 8 (Not shown in the image). The first connecting shaft 31 can be located within the receiving cavity. The first connecting shaft 31 can be connected to the bearing seat 2002. Furthermore, the first connecting shaft 31 can pass through the first rotating part 2011 along the first direction Y, and the first rotating part 2011 can rotate around the first connecting shaft 31 so that the first rotating part 2011 can be rotatably connected to the main shaft 200 through the first connecting shaft 31.

[0093] Similarly, in order to enable the second rotating part 2021 of the second rotating arm 202 to rotate relative to the main shaft 200, in some embodiments of this application, the following continues... Figure 8 As shown, the rotating shaft mechanism 20 may further include a second connecting shaft 32, which is connected to the main shaft 200. For example, the second connecting shaft 32 may be located within a receiving cavity between the shaft cover 2001 and the shaft seat 2002. The second connecting shaft 32 is connected to the shaft seat 2002. Furthermore, the second connecting shaft 32 can pass through a second rotating portion 2021 along a first direction Y, and the second rotating portion 2021 can rotate about the second connecting shaft 32, so that the second rotating portion 2021 can be rotatably connected to the main shaft 200 via the second connecting shaft 32.

[0094] The above example illustrates the rotational connection of the first rotating part 2011 and the second rotating part 2021 to the main shaft 200 via physical shafts (i.e., the first connecting shaft 31 and the second connecting shaft 32), respectively. Alternatively, in some embodiments of this application, the first rotating part 2011 and the second rotating part 2021 may also be rotatably connected to the main shaft 200 via virtual shafts. This virtual shaft can refer to a component with an arc-shaped structure, where the rotation center of the arc-shaped structure serves as the virtual shaft. The two rotatably connected components can rotate relative to the virtual shaft. Furthermore, as the two rotatably connected components rotate relative to each other, the position of the virtual shaft remains unchanged.

[0095] For example, either the first rotating part 2011 or the second rotating part 2021 can be a semi-circular arc wall structure. This arc wall structure can serve as the aforementioned circular arc structure, with its axis serving as the aforementioned virtual axis. Furthermore, a circular arc groove can be formed between the shaft cover 2001 and the shaft seat 2002. Based on this, the aforementioned arc wall structure can extend into the circular arc groove. The shapes of the arc wall structure and the circular arc groove are matched so that the arc wall structure can slide within the circular arc groove, thereby achieving a rotational connection between the rotating part and the main shaft 200.

[0096] This application does not limit the rotational connection method between the first rotating part 2011 and the second rotating part 2021 and the main shaft 200. For ease of explanation, the following description uses the example of the first rotating part 2011 and the second rotating part 2021 being rotatably connected to the main shaft 200 via physical shafts (i.e., the first connecting shaft 31 and the second connecting shaft 32). In this case, the rotation center of the first rotating part 2011 can coincide with the axis of the first connecting shaft 31. The rotation center of the second rotating part 2021 can coincide with the axis of the second connecting shaft 32.

[0097] As can be seen from the above, if Figure 9 As shown, the first rotating part 2011 of the first rotating arm 201 and the second rotating part 2021 of the second rotating arm 202 are connected in a transmission manner, so that the first housing 11 and the second housing 12 (as shown) Figure 7 (As shown) can move synchronously. In some embodiments of this application, in order to enable the second rotating part 2021 to be driveably connected to the first rotating part 2011, the side of the first rotating part 2011 facing the second rotating part 2021 has a first gear surface S1. The side of the second rotating part 2021 facing the first rotating part 2011 has a second gear surface S2. In addition, the above-mentioned rotating shaft mechanism 20 may also include a first gear 21 and a second gear 22.

[0098] like Figure 10 As shown, the first gear 21 can be located between the first rotating part 2011 and the second rotating part 2021, and the first gear 21 can mesh with the first gear surface S1 on the first rotating part 2011. The second gear 22 can be located between the first rotating part 2011 and the second rotating part 2021, and the second gear 22 can mesh with the second gear surface S2 on the second rotating part 2021.

[0099] In addition, continue as Figure 10 As shown, the first gear 21 and the second gear 22 are connected in a transmission manner. For example, the first gear 21 and the second gear 22 can directly mesh to achieve a transmission connection between them. Alternatively, as another example, the aforementioned shaft mechanism 20 may further include a plurality of meshing gears located between the first gear 21 and the second gear 22, so that the first gear 21 and the second gear 22 are connected in a transmission manner through these plurality of gears.

[0100] Based on this, continue as follows Figure 10As shown, when the first rotating part 2011 rotates around the first connecting shaft 31 (e.g., clockwise), it can drive the first gear 21, which meshes with the first gear surface S1 on the first rotating part 2011, to rotate (e.g., counterclockwise). Furthermore, the first gear 21 can drive the second gear 22 to rotate (e.g., clockwise), and drive the second rotating part 2021, which meshes with the second gear 22 via the second gear surface S2, to rotate around the second connecting shaft 32 (e.g., counterclockwise), thereby enabling a transmission connection between the first rotating arm 201 and the second rotating arm 202.

[0101] Based on this, such as Figure 11 (for the following) Figure 3 As shown in another sectional view obtained by cutting along the dashed lines A1-A2, the rotation center o1 of the first rotating part 2011 is offset from the axis a1 of the first rotating part 2011. For example, when the first rotating part 2011 is rotatably connected to the main shaft 200 via the first connecting shaft 31, the rotation center o1 of the first rotating part 2011 can be the axis of the first connecting shaft 31. Furthermore, the first rotating part 2011 can be approximated as... Figure 9 The cylinder shown. In this case, as... Figure 12 (for the following) Figure 9 As shown in the schematic diagram obtained by cutting along the dashed lines A3-A4, when the first rotating part 2011 has a first gear surface S1, the outline shape of the vertical projection of the first rotating part 2011 onto the ZX surface is approximately a circle R. At this time, the vertical projection of the axis a1 of the first rotating part 2011 onto the ZX surface can coincide with the center of the aforementioned circle R.

[0102] Alternatively, as another example, when the first rotating part 2011 is rotatably connected to the main shaft 200 in the manner described above as a virtual axis, the first rotating part 2011 has an approximate semi-circular arc wall structure. In this case, the outline shape of the first rotating part 2011's vertical projection on the ZX surface is approximately fan-shaped. The axis a1 of the first rotating part 2011 can be the center of the aforementioned fan shape.

[0103] In addition, continue as Figure 11 As shown, the rotation center o2 of the second rotating part 2021 can be offset from the axis a2 of the second rotating part 2021. Similarly, for example, when the second rotating part 2021 is rotatably connected to the main shaft 200 via the second connecting shaft 32, the rotation center o2 of the second rotating part 2021 can be the axis of the second connecting shaft 32. Furthermore, the arrangement of the axis a2 of the second rotating part 2021 is the same as the arrangement of the axis of the first rotating part 2011, and will not be repeated here.

[0104] On this basis, continue as Figure 11As shown, the rotation center o1 of the first rotating part 2011 can have a first distance H1 between it and the rotation center o2 of the second rotating part 2021. The axis a1 of the first rotating part 2011 and the axis a2 of the second rotating part 2021 can have a second distance H2. Wherein, H1 > H2. Therefore, when the rotating shaft mechanism 20 is in the closed state, the rotation center o1 of the first rotating part 2011 faces outward (i.e., the side away from the second rotating part 2021), and the axis a1 of the first rotating part 2011 faces inward (i.e., the side closer to the second rotating part 2021). Similarly, the rotation center o2 of the second rotating part 2021 faces outward (i.e., the side away from the first rotating part 2011), and the axis a2 of the second rotating part 2021 faces inward (i.e., the side closer to the first rotating part 2011), so that both the first rotating part 2011 and the second rotating part 2021 are eccentrically arranged rotating components.

[0105] Based on this, such as Figure 13 As shown, the display terminal of the related technology has two swing arms 40 connected by a transmission. During the rotation of the two swing arms 40, the display screen 10 can be folded and flattened. When the rotation center and axis of either swing arm 40 coincide, the distance H3 between the two swing arms 40 is the distance between the rotation centers of the two swing arms 40. The distance H3 determines the distance L2 between the swing arm 40 and the display screen 10. As display terminals become thinner and lighter, the size of the main shaft (200) along the X direction becomes smaller and smaller. This leads to a decrease in the distance H3 between the rotation centers of the two swing arms 40 when the display terminal is folded, which in turn reduces the distance L2 between the swing arm 40 and the display screen 10, making it easier for the swing arm 40 to squeeze the display screen 10.

[0106] In comparison, the rotating shaft mechanism 20 provided in the embodiments of this application, such as Figure 11 As shown, similarly, when the display terminal 01 is in a folded state, due to the thinner and lighter display terminal 01, the size of the main shaft 200 along the second direction X becomes smaller and smaller, which in turn makes the second distance H2 between the axis a1 and the axis a2 become smaller and smaller. However, since both the first rotating part 2011 and the second rotating part 2021 are eccentrically arranged, when H1 > H2, the larger first distance H1 can determine the distance L1 between the first rotating arm 201 (or the second rotating arm 202) and the display screen 10, and the smaller second distance H2 will not affect the aforementioned distance L1.

[0107] Based on this, Figure 11 The second spacing H2 in the middle and Figure 13When the spacing H3 is equal (i.e., H2 = H3), since H1 > H2, the first spacing H1 that determines the distance L1 is larger, thus allowing the distance L1 to be greater than... Figure 13 The distance L2 in the middle (i.e., L1 > L2). Alternatively, the dimension of the principal axis 200 along the second direction X is reduced so that Figure 11 The second spacing H2 in the middle is less than Figure 13 Similarly, when the initial spacing H1 that determines distance L1 is large (i.e., H2 < H3), distance L1 can be greater than or equal to H3. Figure 13 The distance L2 in the middle (i.e., L1≥L2). In this way, a larger space can be formed between the first rotating arm 201 and the second rotating arm 202 to accommodate the folded part of the display screen 10, thereby alleviating the problem of the display screen 10 being squeezed at the folded position during the folding process of the display terminal 01.

[0108] Furthermore, in some use cases, the user will display terminal 01 as... Figure 3 The closed state shown is flattened to... Figure 2 During the flattening process shown, when the display terminal 01 is about to be in a fully flattened state, for example, when the angle between the first housing 11 and the second housing 12 is about to approach 180° (e.g., 175°), the pivot mechanism 20 can provide assistance to the first housing 11 and the second housing 12 for flattening, so that the angle between the first housing 11 and the second housing 12 can quickly reach 180° (i.e., the display terminal 01 is in a fully flattened state), thereby improving the user experience.

[0109] Alternatively, in other use cases, the user will display terminal 01 as... Figure 2 As shown in the flattened state, fold to Figure 3 During the closed state process shown, when the display terminal 01 is about to be fully closed, for example, when the angle between the first housing 11 and the second housing 12 is about to approach 0° (e.g., 5°), the pivot mechanism 20 can provide assistance to the first housing 11 and the second housing 12 for closing, so that the angle between the first housing 11 and the second housing 12 can quickly reach 0° (i.e., the display terminal 01 is in the closed state), thereby improving the user experience.

[0110] Alternatively, in some other usage scenarios, when the user folds the display terminal 01 to a state between the closed state and the flattened state, for example, when the opening angle between the first housing 11 and the second housing 12 can be 100°, the pivot mechanism 20 can provide a damping force to the first housing 11 and the second housing 12 for hovering, so that the relative position between the first housing 11 and the second housing 12 can be fixed, and the display terminal 01 can maintain the above opening angle in the hovering state, which is beneficial to the user's movie watching or office work needs.

[0111] Based on this, in order to meet the requirements of the above-mentioned usage scenarios, the aforementioned rotating shaft mechanism 20 is provided with a damping structure for providing the aforementioned assist and damping forces. The following provides examples of the damping structure and the mechanism that cooperates with it. In some embodiments of this application, such as... Figure 14 (for Figure 10 As shown in the schematic diagram obtained from direction B2 in the figure, the rotating shaft mechanism 20 further includes a first damping element 221, which can be disposed within the main shaft 200. The side of the first damping element 221 opposite to the first rotating part 2011 is elastically connected to the main shaft 200. For example, the rotating shaft mechanism 20 may also include at least one elastic element 60, which is disposed on the side of the first damping element 221 opposite to the first rotating part 2011. Furthermore, the elastic element 60 can be disposed within the main shaft 200 along the first direction Y. The elastic element 60 can provide elastic force to the first damping element 221, so that the first damping element 221 can act as a damping structure to abut against the first rotating part 2011 and the second rotating part 2021 according to user requirements.

[0112] For example, the elastic element 60 mentioned above can be a spring or a sheet spring, etc. Continuing as... Figure 14 As shown, when the first damping member 221 abuts against the first rotating part 2011, the first damping member 221 can provide a certain force to the first rotating part 2011. This force can be used to flatten or close the first housing 11 (e.g., Figure 2 (as shown) the assist force, and the damping force for controlling the suspension of the first housing 11.

[0113] In this case, in order for the first damping element 221 to abut against the first rotating part 2011, such as Figure 15 (for Figure 14 As shown in the schematic diagram obtained from direction B3 in the figure, the first rotating part 2011 may have a first cam surface C1, which has at least one first protrusion 51. Figure 15This example illustrates the concept of a first cam surface C1 having three first protrusions 51. This application does not limit the number of first protrusions 51 on the first cam surface C1. When the first cam surface C1 has two or more first protrusions 51, adjacent first protrusions 51 can be spaced apart. For example... Figure 16 (along Figure 15 As shown in the enlarged schematic diagram at point A3 in the figure, the first protrusion 51 may have a top surface p2 and side inclined surfaces p1 located on both sides of the top surface. The top surface p2 may be an inclined surface or a plane, and this application does not limit it in this regard.

[0114] also, Figure 14 The first damping element 221 shown has the following characteristics on the side facing the first rotation 2011: Figure 17 (for Figure 14 The second cam surface C2 shown in the schematic diagram (obtained from B4 in the diagram) has at least one second protrusion 52. For example, the number of second protrusions 52 can be the same as the number of first protrusions 51 (e.g., ...). Figure 15 The number of the second cam surface C2 is the same as that shown, and the shape of the second cam surface C2 matches that of the first cam surface C1, so that the at least one second protrusion 52 can abut against at least one first protrusion 51.

[0115] Similarly, continue as follows Figure 14 As shown, when the first damping member 221 abuts against the second rotating part 2021, the first damping member 221 can provide a certain force to the second rotating part 2021. This force can flatten or close the second housing 12 (e.g., Figure 2 (as shown) the assist force, and the damping force for controlling the hovering of the second housing 12.

[0116] In this case, in order for the first damping element 221 to abut against the second rotating part 2021, the following continues... Figure 15 As shown, the second rotating part 2021 may have a third cam surface C3, which has at least one third protrusion 53. The arrangement of at least two third protrusions 53 is the same as described above, and will not be repeated here.

[0117] also, Figure 14 The first damping element 221 shown has the following characteristics on the side facing the second rotation 2021: Figure 17 The fourth cam surface C4 shown has at least one fourth protrusion 54. For example, the number of fourth protrusions 54 can be the same as the number of third protrusions 53 (e.g., ...). Figure 15The number of the fourth cam surface C4 and the shape of the second cam surface C2 are the same, so that the at least one fourth protrusion 54 can abut against at least one third protrusion 53. Similarly, any one of the second protrusion 52, the third protrusion 53 and the fourth protrusion 54 may have the top surface and the inclined side surface.

[0118] The following examples illustrate how the first damping member 221 provides the aforementioned force to the first rotating part 2011 and the second rotating part 2021, based on the different abutment positions of the first protrusion 51 and the second protrusion 52, and the different abutment positions of the third protrusion 53 and the fourth protrusion 54. In some embodiments of this application, during the process of the user flattening the display terminal 01, when the display terminal 01 is about to be in a completely flattened state, such as Figure 18 As shown, the left slope of the first protrusion 51 of the first rotating part 2011 (for example, Figure 16 The side slope p1 of the first damping member 221 can abut against the right side slope of the second protrusion 52 of the first damping member 221, so that the first cam surface C1 with the first protrusion 51 (as shown in the image) can abut against the right side slope of the second protrusion 52 of the first damping member 221. Figure 15 (as shown) and the second cam surface C2 with the second protrusion 52 (as shown) Figure 17 (As shown) meshing. Furthermore, the right-side slope of the third protrusion 53 of the second rotating part 2021 can abut against the left-side slope of the fourth protrusion 54 of the first damping member 221, so that the third cam surface C3 having the third protrusion 53 (as shown) engages. Figure 15 (as shown) and the fourth cam surface C4 with the fourth protrusion 54 (as shown) Figure 17 (As shown) meshing.

[0119] Continue as Figure 18 As shown, the elastic member 60 can apply a force F to the first damping member 221 along the first direction Y. Under the action of the force F, the first damping member 221 can apply a thrust F1 perpendicular to the right slope of the first protrusion 51. The thrust F1 has a component force f1 to the right along the second direction X. Under the action of this component force f1, the first extension 2012 of the first rotating arm 201 can be moved to the right relative to the first fixed frame 211 (e.g., Figure 8 (As shown) slides. Simultaneously, the first rotating part 2011 of the first rotating arm 201 can slide relative to the main shaft 200 (as shown). Figure 8 (As shown) Rotate counterclockwise.

[0120] In addition, continue as Figure 18As shown, under the action of the aforementioned force F, the first damping member 221 can apply a thrust F2 perpendicular to the left inclined surface of the third protrusion 53 to the third protrusion 53. The thrust F2 has a leftward component f2 along the second direction X. Under the action of this component f2, the second extension 2022 of the second rotating arm 202 can be moved to the left relative to the second fixed frame 212 (e.g., Figure 8 (As shown) slides. Simultaneously, the second rotating part 2021 of the second rotating arm 202 can slide relative to the main shaft 200 (as shown). Figure 8 (As shown) Rotate clockwise.

[0121] First housing 11 and second housing 12 (e.g.) Figure 2 When the angle between (as shown) is close to 180° (e.g., 175°), Figure 18 As shown, the component forces f1 and f2 from the first damping element 221 can act as a pivot mechanism 20 to provide assistance to the first housing 11 and the second housing 12 for flattening, so that the angle between the first housing 11 and the second housing 12 can quickly reach 180°. At this time, the pivot mechanism 20 and the display terminal 01 having the pivot mechanism 20 can be in a fully flattened state.

[0122] Alternatively, in some other embodiments of this application, during the process of the user folding the display terminal 01, when the display terminal 01 is about to be in a closed state, the same principle applies. Figure 18 The second protrusion 52 of the first damping member 221 shown can abut against the side slope of the first protrusion 51, so that the first cam surface C1 having the first protrusion 51 (as shown) Figure 15 (as shown) and the second cam surface C2 with the second protrusion 52 (as shown) Figure 17 (As shown) meshing. Furthermore, the side slope of the fourth protrusion 54 can abut against the side slope of the second protrusion 52, so that the third cam surface C3 having the third protrusion 53 (as shown) engages. Figure 15 (as shown) and the fourth cam surface C4 with the fourth protrusion 54 (as shown) Figure 17 (As shown) meshing.

[0123] The first damping element 221 applies force components to the first protrusion 51 and the third protrusion 53 respectively, allowing the first rotating arm 201 to slide to the left relative to the first fixed frame 211, and the second rotating arm 202 to slide to the right relative to the first fixed frame 211. Simultaneously, the first rotating arm 201 rotates clockwise relative to the main shaft 200, and the second rotating arm 202 rotates counterclockwise relative to the main shaft 200. In the first housing 11 and the second housing 12 (e.g., Figure 3When the angle between the first housing 11 and the second housing 12 is approaching 0°, the component force from the first damping member 221 can act as a closing force provided by the pivot mechanism 20 to the first housing 11 and the second housing 12, so that the angle between the first housing 11 and the second housing 12 quickly reaches 0°. At this time, the pivot mechanism 20 and the display terminal 01 having the pivot mechanism 20 can be in a fully closed state.

[0124] The above refers to the side slopes of the first protrusion 51 and the second protrusion 52 (for example, Figure 16 The example given is the contact between the side slope p1 and the side slopes of the third protrusion 53 and the fourth protrusion 54. In other embodiments of this application, when the user needs to keep the display terminal 01 in a hovering state at an opening angle during the process of folding and flattening the display terminal 01, Figure 18 The top surface of the second protrusion 52 of the first damping member 221 shown can be parallel to the top surface of the first protrusion 51 (e.g., Figure 16 The top surface of the fourth protrusion 54 abuts against the top surface of the second protrusion 52. At this time, the force from the first damping member 221 can serve as a damping force for suspension that the pivot mechanism 20 can provide to the first housing 11 and the second housing 12. At this time, the pivot mechanism 20 and the display terminal 01 having the pivot mechanism 20 can be suspended between the fully flattened state and the fully closed state.

[0125] Furthermore, during the rotation of the aforementioned rotating shaft mechanism 20, when the rotating shaft mechanism 20 is not in the aforementioned fully flattened state, fully closed state, or hovering state, the second protrusion 52 of the first damping member 221 and the first protrusion 51 of the first rotating part 2011, as well as the fourth protrusion 54 of the first damping member 221 and the third protrusion 53 of the second rotating part 2021, can be in a non-abutting state.

[0126] As described above, when the first damping member 221 abuts against the first rotating part 2011, the first damping member 221 can provide a certain force to the first rotating part 2011, serving as an aid to the flattening and closing of the first housing 11 and the second housing 12, as well as a damping force for suspension. As the display terminal 01 gradually becomes thinner, the dimensions of the aforementioned first damping member 221, first rotating arm 201, and second rotating arm 202 will decrease accordingly. Therefore, to ensure that the aforementioned aid or damping force is sufficiently large, in some embodiments of this application, such as... Figure 19 (for Figure 14As shown in another schematic diagram obtained from B3 in the diagram, the first cam surface C1 has a first region 701 and a second region 702. For example, in the case where the second region 702 is located at the lower right corner of the first cam surface C1, the first region 701 is the portion of the first cam surface C1 other than the second region 702.

[0127] Continue as Figure 19 As shown, since the rotation center o1 of the first rotating part 2011 is eccentrically positioned, the wall thickness b1 of the first rotating part 2011 in the first region 701 can be greater than the wall thickness b2 of the first rotating part 2011 in the second region 702. For example, if the outline shape of the first rotating part 2011 in the ZX plane is approximately circular or fan-shaped, the aforementioned wall thickness b1 can be the average wall thickness of the first rotating part 2011 in the first region 701, and the wall thickness b2 can be the average wall thickness of the first rotating part 2011 in the second region 702. Alternatively, the wall thickness b1 can be the minimum wall thickness of the first rotating part 2011 in the first region 701, and the wall thickness b2 can be the minimum wall thickness of the first rotating part 2011 in the second region 702. Alternatively, the wall thickness b1 can be the maximum wall thickness of the first rotating part 2011 in the first region 701, and the wall thickness b2 can be the maximum wall thickness of the first rotating part 2011 in the second region 702; this application does not limit this.

[0128] like Figure 20 (for Figure 14 As shown in another schematic diagram (B3 in the diagram), the first protrusion 51 can be located in the first region 701. Since the wall thickness of the first region 701 is greater than that of the second region 702, the width h1 of the first protrusion 51 located in the first region 701 is larger than that of the first protrusion 51 located in the second region 702. In this case, when the rotating shaft mechanism 20 is in the above-mentioned fully flattened state, fully closed state, and hovered state, a larger contact area can be obtained between the second protrusion 52 of the first damping member 221 and the first protrusion 51 of the first rotating part 2011, thereby increasing the above-mentioned assist and damping force provided by the first damping member 221 to the first rotating part 2011, effectively alleviating the problem of decreased assist and damping force caused by the ultra-thinning of the display terminal.

[0129] Similarly, such as Figure 19 As shown, the third cam surface C3 of the second rotating part 2021 can have a third region 703 and a fourth region 704. The wall thickness b3 of the second rotating part 2021 located in the third region 703 is greater than the wall thickness b4 of the second rotating part 2021 located in the fourth region 704. The wall thickness b3 and wall thickness b4 are set in the same way as described above, and will not be repeated here. Figure 20As shown, the third protrusion 53 can be located in the third region 703. Similarly, compared to placing the third protrusion 53 in the fourth region 704, the width h3 of the third protrusion 53 located in the third region 703 is larger. When the fourth protrusion 54 abuts against the third protrusion 53, a larger abutment area can be obtained, thereby increasing the aforementioned assist and damping force provided by the first damping member 221 to the second rotating part 2021.

[0130] As can be seen from the above, if Figure 21 As shown, when the rotating shaft mechanism 20 has at least one elastic element 60, the aforementioned assist or damping force provided by the first damping element 221 to the first rotating arm 201 and the second rotating arm 202 can originate from the elastic force generated by the elastic deformation of the elastic element 60. In some embodiments of this application, the aforementioned elastic element may include a first elastic element 601 and a second elastic element 602. The first elastic element 601 may be connected to the first damping element 221, and the axis of the first elastic element 601 may coincide with the rotation center of the first rotating portion 2011 in the first rotating arm 201. The second elastic element 602 is connected to the first damping element 221, and the axis of the second elastic element 602 may coincide with the rotation center of the second rotating portion 2021 in the second rotating arm 202.

[0131] For example, in the embodiments of this application, the axis of the elastic element 60 may refer to the fact that the outline shape of the elastic element 60 projected vertically onto a surface perpendicular to the extension direction of the elastic element 60, such as the ZX surface, is approximately circular. The center of this circle may coincide with the vertical projection of the axis of the elastic element 60 onto the ZX surface.

[0132] Based on this, in order to make the axis of the first elastic member 601 coincide with the rotation center of the first rotating part 2011, the axis of the second elastic member 602 coincides with the rotation center of the second rotating part 2021. In some embodiments of this application, the following continues... Figure 21 As shown, when the rotating shaft mechanism 20 includes the aforementioned first connecting shaft 31 and second connecting shaft 32, the first connecting shaft 31 can pass through the first rotating part 2011 and the first elastic member 601 along the first direction Y. As explained above, the first rotating part 2011 can be rotatably connected to the main shaft 200 via the first connecting shaft 31; therefore, the axis of the first connecting shaft 31 is the rotation center of the first rotating part 2011. When the first elastic member 601 passes through the first connecting shaft 31, the axis of the first elastic member 601 can coincide with the axis of the first connecting shaft 31, thereby coinciding with the rotation center of the first rotating part 2011.

[0133] Similarly, continue as follows Figure 21As shown, along the first direction Y, the second connecting shaft 32 can pass through the second rotating part 2021 and the second elastic member 602. As explained above, the second rotating part 2021 can be rotatably connected to the main shaft 200 via the second connecting shaft 32; therefore, the axis of the second connecting shaft 32 is the rotation center of the second rotating part 2021. When the second elastic member 602 passes through the second connecting shaft 32, the axis of the second elastic member 602 can coincide with the axis of the second connecting shaft 32, thereby coinciding with the rotation center of the second rotating part 2021.

[0134] Based on this, in order to further increase the force exerted by the first damping member 221 on the first rotating arm 201 and the second rotating arm 202, in some embodiments of this application, such as Figure 22 As shown, the at least one elastic element 60 may include at least one intermediate elastic element. For example, the at least one intermediate elastic element may include a first intermediate elastic element 603 and a second intermediate elastic element 604. The first intermediate elastic element 603 and the second intermediate elastic element 604 may be located between the first elastic element 601 and the second elastic element 602. The intermediate elastic elements (e.g., the first intermediate elastic element 603 and the second intermediate elastic element 604) are connected to the first damping element 221. In this way, by providing the above-mentioned intermediate elastic elements, the number of elastic elements 60 can be increased, thereby increasing the force exerted by the first damping element 221 on the first rotating arm 201 and the second rotating arm 202.

[0135] For example, the axis of the first intermediate elastic element 603 can coincide with the rotation center of the first gear 21, and the axis of the second intermediate elastic element 604 can coincide with the rotation center of the second gear 22. The dimensions of the first intermediate elastic element 603 and the second intermediate elastic element 604 can be the same as the dimensions of the first elastic element 601 and the second elastic element 602, which helps to simplify the product structure.

[0136] Alternatively, as can be seen from the above, such as Figure 23 (for Figure 22 As shown in the schematic diagram obtained from direction B5 in the diagram, the first rotating part 2011 and the second rotating part 2021 are eccentrically arranged. Therefore, the first distance H1 between the rotation center o1 of the first rotating part 2011 and the rotation center o2 of the second rotating part 2021 is greater than the second distance H2 between the axis a1 of the first rotating part 2011 and the axis a2 of the second rotating part 2021. When the axis of the first elastic member 601 coincides with the rotation center o1 of the first rotating part 2011, and the axis of the second elastic member 602 coincides with the rotation center o2 of the second rotating part 2021, the distance between the axis of the first elastic member 601 and the axis of the second elastic member 602 is also the aforementioned first distance H1.

[0137] In this situation, continue as follows Figure 23 As shown, when the dimensions of the first elastic element 601, the second elastic element 602, the first intermediate elastic element 603, and the second intermediate elastic element 604 are the same (for example, taking the above-mentioned elastic element as a spring, the size of the elastic element can be the thickness of the spring), since the first distance H1 is large, the gap h0 between the first elastic element 601 and the first intermediate elastic element 603 (or the gap between the second elastic element 602 and the second intermediate elastic element 604) is large, thereby reducing the space utilization rate of the rotating shaft mechanism.

[0138] Based on this, in order to improve the space utilization of the rotating shaft mechanism and further increase the force exerted by the first damping member 221 on the first rotating arm 201 and the second rotating arm 202, in some embodiments of this application, such as Figure 24 (for Figure 22 As shown in another schematic diagram obtained from direction B5 in the diagram, the axis of any intermediate elastic element (e.g., the first intermediate elastic element 603 or the second intermediate elastic element 604) is offset from the rotation center of the first gear 21 and the second gear 22. In this way, based on the size of the first gap H1, while ensuring that adjacent elastic elements among the first elastic element 601, the second elastic element 602, the first intermediate elastic element 603, and the second intermediate elastic element 604 do not contact each other, a thicker intermediate elastic element (e.g., the first intermediate elastic element 603 or the second intermediate elastic element 604) can be selected and positioned between the first elastic element 601 and the second elastic element 602.

[0139] For example, such as Figure 25 As shown, the axis I1-I1 of the first intermediate elastic member 603 can be offset from the rotation center I3-I3 of the first gear 21. For example, relative to the rotation center I3-I3 of the first gear 21, the axis I1-I1 of the first intermediate elastic member 603 can be set close to the first elastic member 601. The axis I2-I2 of the second intermediate elastic member 604 can be offset from the rotation center I4-I4 of the second gear 22. For example, relative to the rotation center I4-I4 of the second gear 22, the axis I2-I2 of the second intermediate elastic member 604 can be set close to the second elastic member 602. In this way, when H1 > H2 (e.g., ... Figure 24 In the case shown, the dimensions of the first intermediate elastic member 603 and the second intermediate elastic member 604 can be increased so that the dimensions of the first intermediate elastic member 603 and the second intermediate elastic member 604 are not limited by the position of the rotation center I3-I3 of the first gear 21 and the rotation center I4-I4 of the second gear 22.

[0140] In some embodiments of this application, in order to make the axis I1-I1 of the first intermediate elastic member 603 misaligned with the rotation center I3-I3 of the first gear 21, the axis I2-I2 of the second intermediate elastic member 604 misaligned with the rotation center I4-I4 of the second gear 22. For example... Figure 26 As shown, the rotating shaft mechanism 20 may also include a third connecting shaft 33, a fourth connecting shaft 34, a fifth connecting column 35, and a sixth connecting shaft 36.

[0141] Continue as Figure 26 As shown, along the first direction Y, a third connecting shaft 33 can carry a first gear 21, which can rotate around the third connecting shaft 33. The axis of the third connecting shaft 33 can be the rotation center I3-I3 of the first gear 21. Along the first direction Y, a fourth connecting shaft 34 can carry a second gear 22, which can rotate around the fourth connecting shaft 34. The axis of the fourth connecting shaft 34 can be the rotation center I4-I4 of the second gear 22. Along the first direction Y, a fifth connecting shaft 35 can carry a first intermediate elastic member 603, and the axis of the fifth connecting shaft 35 can be the axis I1-I1 of the first intermediate elastic member 603. Furthermore, along the first direction Y, a sixth connecting shaft 36 carries a second intermediate elastic member 604, and the axis of the sixth connecting shaft 36 can be the axis I2-I2 of the second intermediate elastic member 604.

[0142] Continue as Figure 26 As shown, the axis of the third connecting shaft 33 (i.e., I3-I3) and the axis of the fourth connecting shaft 34 (i.e., I4-I4) are located between the axis of the fifth connecting shaft 35 (i.e., I1-I1) and the axis of the sixth connecting shaft 36 (i.e., I2-I2). Thus, when H1 > H2 (as shown...), Figure 24 In the case shown, the dimensions of the first intermediate elastic member 603 and the second intermediate elastic member 604 can be increased to increase the force exerted by the first damping member 221 on the first rotating arm 201 and the second rotating arm 202.

[0143] In addition, continue as Figure 26 As shown, the third connecting shaft 33 and the fourth connecting shaft 34 can be connected to the first damping element 221 (e.g., Figure 25 (As shown). For example, a portion of the third connecting shaft 33 and the fourth connecting shaft 34 can extend into the first damping member 221 to connect with it. The fifth connecting shaft 35 and the sixth connecting shaft 36 can connect with the first damping member 221 (as shown). Figure 25(As shown) Connection. For example, a portion of the fifth connecting shaft 35 and the sixth connecting shaft 36 can extend into the end of the first damping member 221 away from the first gear 21 to connect with the first damping member 221, thereby achieving the purpose of fixing the aforementioned third connecting shaft 33, fourth connecting shaft 34, fifth connecting post 35 and sixth connecting shaft 36.

[0144] The above is an example of the first elastic element 601 coinciding with the rotation center of the first rotating arm 201, the second elastic element 602 coinciding with the rotation center of the second rotating arm 202, the first intermediate elastic element 603 being misaligned with the rotation center of the first gear 21, and the second intermediate elastic element 604 being misaligned with the rotation center of the second gear 22.

[0145] In other embodiments of this application, where the elastic element includes a first elastic element 601, a second elastic element 602, and at least one intermediate elastic element (e.g., a first intermediate elastic element 603 and a second intermediate elastic element 604), such as Figure 27 As shown, the axis I5-I5 of the first elastic element 601 can be offset from the rotation center o1-o1 of the first rotating part 2011. The axis I6-I6 of the second elastic element 602 can be offset from the rotation center o2-o2 of the second rotating part 2021. One of the above intermediate elastic elements coincides with the rotation center of the first gear 21 or the second gear 22. For example, the axis I7-I7 of the first intermediate elastic element 603 can coincide with the rotation center of the first gear 21, and the axis I8-I8 of the second intermediate elastic element 604 can coincide with the rotation center of the second gear 22.

[0146] In this case, based on the internal structural space of the rotating shaft mechanism 20, the first elastic element 601 can be positioned closer to or further away from the first intermediate elastic element 603 along the second direction X, and the second elastic element 602 can be positioned closer to or further away from the second intermediate elastic element 604. The technical effect of the above-described misaligned arrangement of the first elastic element 601 and the second elastic element 602 is the same as described above, and will not be repeated here.

[0147] Furthermore, the dimensions of the first intermediate elastic member 603 and the second intermediate elastic member 604 may be larger than the dimensions of the first elastic member 601 and the second elastic member 602, or the dimensions of the first intermediate elastic member 603 and the second intermediate elastic member 604 may be smaller than the dimensions of the first elastic member 601 and the second elastic member 602; this application does not impose any limitations on this. The above is an example illustrating that the intermediate elastic members include the first intermediate elastic member 603 and the second intermediate elastic member 604. In other embodiments of this application, the rotating shaft mechanism 20 may include one intermediate elastic member or three or more intermediate elastic members; the arrangement of these intermediate elastic members can be derived similarly and will not be described in detail here.

[0148] In other embodiments of this application, to make the pivot mechanism 20 easier and smoother to flatten and fold, such as Figure 28 As shown, the rotating shaft mechanism 20 may further include a third rotating arm 203 and a fourth rotating arm 204. The third rotating arm 203 may include a third rotating part 2031 and a third extended part 2032 connected to each other. The third extended part 2032 is drively connected to the first fixed frame 211, and the third rotating part 2031 is rotatably connected to the main shaft 200. The rotation center o3-o3 of the third rotating part 2031 coincides with the rotation center o1-o1 of the first rotating part 2011, and the axis of the third rotating part 2031 coincides with the axis of the first rotating part 2011, so that the third rotating part 2031 is eccentrically positioned.

[0149] In addition, continue as Figure 28 As shown, along the second direction X, the third rotating arm 203 and the fourth rotating arm 204 are located on both sides of the main shaft 200, and are connected by a drive mechanism. The fourth rotating arm 204 includes a fourth rotating part 2041 and a fourth extended part 2042 connected to each other. The fourth extended part 2042 is connected by a drive mechanism to the second fixed frame 212, and the fourth rotating part 2041 is rotatably connected to the main shaft 200. The rotation center o4-o4 of the fourth rotating part 2041 coincides with the rotation center o2-o2 of the second rotating part 2021. The axis of the fourth rotating part 2041 coincides with the axis of the second rotating part 2021, so that the fourth rotating part 2041 is eccentrically positioned.

[0150] The third rotating arm 203 has the same configuration and technical effect as the first rotating arm 201, and the fourth rotating arm 204 has the same configuration and technical effect as the second rotating arm 202, which will not be described again here. In this case, by adding rotating arms on both sides of the main shaft 200, it is easier and smoother for the rotating shaft mechanism 20 to flatten and fold.

[0151] In this case, in some embodiments of this application, the damping structure in the aforementioned pivot mechanism 20 for providing the aforementioned assist and damping forces may further include, for example: Figure 29 The second damping element 222 shown can be disposed on the spindle 200 (e.g., Figure 28 (As shown). Furthermore, the at least one elastic member 60 can be located between the first damping member 221 and the second damping member 222, and both ends of the elastic member 60 can be connected to the first damping member 221 and the second damping member 222. Similarly, the at least one elastic member 60 can provide elastic force to the second damping member 222, so that the second damping member 222 can act as the aforementioned damping structure and abut against the third rotating part 2031 and the fourth rotating part 2041.

[0152] In order to enable the second damping member 222 to abut against the third rotating part 2031 and the fourth rotating part 2041 while providing the aforementioned assist and damping force, in some embodiments of this application, such as Figure 30 (for Figure 29 As shown in the schematic diagram obtained from direction B6 in the figure, the third rotating part 2031 has a fifth cam surface C5. The fifth cam surface C5 may have a fifth region 705 and a sixth region 706. The wall thickness b5 of the third rotating part 2031 located in the fifth region 705 is greater than the wall thickness b6 of the third rotating part 2031 located in the sixth region 706. In addition, the fourth rotating part 2041 has a seventh cam surface C7, which has a seventh region 707 and an eighth region 708. The wall thickness b7 of the fourth rotating part 2041 located in the seventh region 707 is greater than the wall thickness b8 of the fourth rotating part 2041 located in the eighth region 708.

[0153] The configuration of the fifth region 705, the sixth region 706, the seventh region 707, and the eighth region 708 is the same as that of the first region 701 and the second region 702 (e.g. Figure 19 Similarly, as shown, the wall thickness b5 of the fifth region 705, the wall thickness b6 of the sixth region 706, the wall thickness b7 of the seventh region 707, and the wall thickness b8 of the eighth region 708 are the same as the wall thickness b1 of the first region 701 and the wall thickness b2 of the second region 702 (as shown). Figure 19 The setup method shown is similar and will not be repeated here.

[0154] In addition, such as Figure 31 (for Figure 29 As shown in another schematic diagram (obtained from direction B6), the fifth cam surface C5 has at least one fifth protrusion 55. The fifth protrusion 55 is located in the fifth region 705 of the third rotating part 2031, which has a relatively thick wall. The seventh cam surface C7 has at least one seventh protrusion 57, which is located in the seventh region 707 of the fourth rotating part 2041, which also has a relatively thick wall. The placement of the fifth protrusion 55 and the seventh protrusion 57 in the region with the relatively thick wall increases the contact area between the second damping member 222 and the third and fourth rotating parts 2031 and 2041 when the second damping member 222 abuts against them.

[0155] Based on this, such as Figure 32 (for Figure 29 As shown in the schematic diagram obtained from B7 in the figure, the second damping element 222 is oriented toward the third rotating part 2031 (as shown in the figure). Figure 31The sixth cam surface C6 is provided on one side of the third rotating part 2031 (as shown), and the sixth cam surface C6 has at least one sixth protrusion 56. This sixth cam surface C6 can interact with the fifth cam surface C5 of the third rotating part 2031 (as shown). Figure 30 The shape matches that of the fifth protrusion 55 (as shown). Figure 31 (As shown) is used to abut against at least one sixth protrusion 56.

[0156] In addition, continue as Figure 32 As shown, the second damping element 222 faces the fourth rotating part 2041 (e.g. Figure 31 The eighth cam surface C8 (as shown) has at least one eighth protrusion 58 on one side. This eighth cam surface C8 is connected to the seventh cam surface C7 (as shown). Figure 30 The shape matches that of the seventh protrusion 57 (as shown). Figure 31 (As shown) is used to abut against at least one eighth protrusion 58.

[0157] Similarly, when the rotating shaft mechanism 20 is in a fully flattened state and a fully closed state, the side slope of the fifth protrusion 55 abuts against the side slope of the sixth protrusion 56, and the sixth cam surface C6 can engage with the fifth cam surface C5. The side slope of the seventh protrusion 57 abuts against the side slope of the eighth protrusion 58, and the seventh cam surface C7 can engage with the eighth cam surface C8. Furthermore, when the rotating shaft mechanism 20 is suspended between a fully flattened state and a fully closed state, the top surface of the fifth protrusion 55 abuts against the top surface of the sixth protrusion 56, and the top surface of the seventh protrusion 57 abuts against the top surface of the eighth protrusion 58. The above is an example of providing protrusions that match the second damping member 222 on both the third rotating part 2031 and the fourth rotating part 2041. In some other embodiments, only one of the third rotating part 2031 and the fourth rotating part 2041 may be provided with the above-mentioned protrusion, and the second damping member 222 may be provided with a corresponding protrusion structure at the position corresponding to the protrusion.

[0158] Furthermore, in some embodiments of this application, the following continues... Figure 29 As shown, the rotating shaft mechanism 20 may also include a stop 230, which can be located on the main shaft (200) 20 (e.g. Figure 28 (As shown). Furthermore, the stop 230 can be connected to the main shaft 200. The stop 230 is disposed on the side of the third rotating arm 203 and the fourth rotating arm 204 opposite to the second damping member 222. In this way, when the second damping member 222 applies a force to the third rotating arm 203 and the fourth rotating arm 204 under the action of the elastic member 60, the stop 230 can limit the movement of the third rotating arm 203 and the fourth rotating arm 204, reducing the probability of the third rotating arm 203 and the fourth rotating arm 204 moving along the first direction Y.

[0159] Based on this, such as Figure 33 (for Figure 29 As shown in another schematic diagram (B7 in the diagram), the third rotating part 2031 has a ninth cam surface C9, which has a ninth region 709 and a tenth region 710. The wall thickness b9 of the third rotating part 2031 in the ninth region 709 is greater than the wall thickness b10 of the third rotating part 2031 in the tenth region 710. Furthermore, the fourth rotating part 2041 has a tenth cam surface C10, which has an eleventh region 711 and a twelfth region 712. The wall thickness b11 of the fourth rotating part 2041 in the eleventh region 711 is greater than the wall thickness b12 of the fourth rotating part 2041 in the twelfth region 712.

[0160] The configuration of the aforementioned ninth region 709, tenth region 710, eleventh region 711, and twelfth region 712 is the same as that of the aforementioned first region 701 and second region 702 (e.g. Figure 19 Similarly, as shown, the wall thickness b9 of the ninth region 709, the wall thickness b10 of the tenth region 710, the wall thickness b11 of the eleventh region 711, and the wall thickness b12 of the twelfth region 712 are the same as the wall thickness b1 of the first region 701 and the wall thickness b2 of the second region 702 (as shown). Figure 19 The setup method shown is similar and will not be repeated here.

[0161] like Figure 34 (for Figure 29 As shown in another schematic diagram (B7 in the diagram), the ninth cam surface C9 has at least one ninth protrusion 59, which is located in the ninth region 709 of the third rotating part 2031 with a relatively thick wall. The tenth cam surface C10 has at least one tenth protrusion 510, which is located in the eleventh region 711 of the fourth rotating part 2041 with a relatively thick wall. Similarly, the placement of the ninth protrusion 59 and the tenth protrusion 510 in the regions with a relatively thick wall increases the contact area between the stop member 230 and the third rotating part 2031 and the fourth rotating part 2041 when the stop member 230 abuts against them.

[0162] Based on this, such as Figure 35 (for Figure 29 As shown in another schematic diagram obtained from direction B6 in the figure, the stop member 230 has an eleventh cam surface C11 and a twelfth cam surface C12. The eleventh cam surface C11 has at least one eleventh protrusion 511, and the eleventh cam surface C11 and the ninth cam surface C9 (as shown in the figure) Figure 33 The shape of the at least eleventh protrusion 511 is matched with that of at least the ninth protrusion 59 (as shown). Figure 34(As shown) abuts. The twelfth cam surface C12 has at least one twelfth protrusion 512, and the twelfth cam surface C12 abuts against the tenth cam surface C10 (as shown). Figure 33 The shape of at least one twelfth protrusion 512 is matched with that of at least one tenth protrusion 510 (as shown). Figure 34 (As shown) Arrive.

[0163] Similarly, when the rotating shaft mechanism 20 is in a fully flattened state and a fully closed state, the side slope of the ninth protrusion 59 abuts against the side slope of the eleventh protrusion 511, and the aforementioned ninth cam surface C9 can engage with the eleventh cam surface C11. The side slope of the tenth protrusion 510 abuts against the side slope of the twelfth protrusion 512, and the aforementioned tenth cam surface C10 can engage with the twelfth cam surface C12. Furthermore, when the rotating shaft mechanism 20 is suspended between a fully flattened state and a fully closed state, the top surface of the ninth protrusion 59 abuts against the top surface of the eleventh protrusion 511, and the top surface of the tenth protrusion 510 abuts against the top surface of the twelfth protrusion. The above is an example illustration using the example that both the third rotating part 2031 and the fourth rotating part 2041 are provided with protrusions that match the stop member 230. In some other embodiments, only one of the third rotating part 2031 and the fourth rotating part 2041 may be provided with the above-mentioned protrusion, and the stop member 230 may be provided with a corresponding protrusion structure at the position corresponding to the protrusion.

[0164] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A rotating shaft mechanism (20), characterized in that, include: The main shaft (200) extends along the first direction (Y); First fixed frame (211); The second fixing bracket (212) is located along the second direction (X), with the first fixing bracket (211) and the second fixing bracket (212) located on both sides of the main shaft (200); the second direction (X) is perpendicular to the first direction (Y); The first rotating arm (201) includes a first rotating part (2011) and a first extended part (2012) connected to each other; the first extended part (2012) is connected to the first fixed frame (211) in a transmission manner; the first rotating part (2011) is rotatably connected to the main shaft (200), and the rotation center of the first rotating part (2011) is offset from the axis of the first rotating part (2011); The second rotating arm (202) is located along the second direction (X), with the first rotating arm (201) and the second rotating arm (202) respectively located on both sides of the main shaft (200); the second rotating arm (202) includes a second rotating part (2021) and a second extension part (2022) connected to each other; the second rotating part (2021) is drivenly connected to the first rotating part (2011), and the second extension part (2022) is drivenly connected to the second fixed frame (212); the second rotating part (2021) is rotatably connected to the main shaft (200), and the rotation center of the second rotating part (2021) is offset from the axis of the second rotating part (2021); Wherein, there is a first distance H1 between the rotation center of the first rotating part (2011) and the rotation center of the second rotating part (2021); there is a second distance H2 between the axis of the first rotating part (2011) and the axis of the second rotating part (2021); H1 > H2.

2. The rotating shaft mechanism (20) according to claim 1, characterized in that, The first rotating part (2011) has a first cam surface (C1); the first cam surface (C1) has at least one first protrusion (51); the first cam surface (C1) has a first region (701) and a second region (702), and the wall thickness of the first rotating part (2011) in the first region (701) is greater than the wall thickness of the first rotating part (2011) in the second region (702); The first protrusion (51) is located in the first region (701); The rotating shaft mechanism (20) also includes: The first damping element (221) is disposed inside the main shaft (200); The first damping member (221) has a second cam surface (C2) on the side facing the first rotating part (2011), and the second cam surface (C2) has at least one second protrusion (52); the shape of the second cam surface (C2) matches that of the first cam surface (C1), and the at least one second protrusion (52) is used to abut against the at least one first protrusion (51); the side of the first damping member (221) away from the first rotating arm (201) is elastically connected to the main shaft (200).

3. The rotating shaft mechanism (20) according to claim 2, characterized in that, Either the first protrusion (51) or the second protrusion (52) includes a top surface and side slopes located on both sides of the top surface; When the rotating shaft mechanism (20) is in a fully flattened state and a fully closed state, the side slope of the first protrusion (51) abuts against the side slope of the second protrusion (52), and the first cam surface (C1) meshes with the second cam surface (C2). When the rotating shaft mechanism (20) is suspended between the fully flattened state and the fully closed state, the top surface of the first protrusion (51) abuts against the top surface of the second protrusion (52).

4. The rotating shaft mechanism (20) according to claim 2 or 3, characterized in that, The second rotating part (2021) has a third cam surface (C3); the third cam surface (C3) has at least one third protrusion (53); the third cam surface (C3) has a third region (703) and a fourth region (704), the wall thickness of the second rotating part (2021) in the third region (703) is greater than the wall thickness of the second rotating part (2021) in the fourth region (704); the third protrusion (53) is located in the third region (703); The first damping member (221) has a fourth cam surface (C4) on the side facing the second rotating part (2021), the fourth cam surface (C4) having at least one fourth protrusion (54); the shape of the fourth cam surface (C4) matches that of the third cam surface (C3), and the at least one fourth protrusion (54) is used to abut against the at least one third protrusion (53).

5. The rotating shaft mechanism (20) according to any one of claims 2-4, characterized in that, The first rotating part (2011) has a first gear surface (S1) on the side facing the second rotating part (2021); The second rotating part (2021) has a second gear surface (S2) on the side facing the first rotating part (2011); The rotating shaft mechanism (20) also includes: A first gear (21) is located between the first rotating part (2011) and the second rotating part (2021); the first gear (21) meshes with the first gear surface (S1); The second gear (22) is located between the first rotating part (2011) and the second rotating part (2021); the second gear (22) meshes with the second gear surface (S2); the first gear (21) and the second gear (22) are connected in a transmission.

6. The rotating shaft mechanism (20) according to claim 5, characterized in that, The rotating shaft mechanism (20) further includes at least one elastic element (60), the at least one elastic element (60) comprising: A first elastic element (601) is disposed within the main shaft (200) along the first direction (Y), and the first elastic element (601) is connected to the first damping element (221); the axis of the first elastic element (601) coincides with the rotation center of the first rotating part (2011); The second elastic element (602) is disposed in the main shaft (200) along the first direction (Y), and the second elastic element (602) is connected to the first damping element (221); the axis of the second elastic element (602) coincides with the rotation center of the second rotating part (2021); At least one intermediate elastic element (610) is disposed within the main shaft (200) along the first direction (Y) and located between the first elastic element (601) and the second elastic element (602); the intermediate elastic element is connected to the first damping element (221); the axis of any one of the intermediate elastic elements is offset from the rotation center of the first gear (21) and the second gear (22).

7. The rotating shaft mechanism (20) according to claim 6, characterized in that, The rotating shaft mechanism (20) also includes: A first connecting shaft (31) passes through the first rotating part (2011) and the first elastic member (601) along the first direction (Y); the first connecting shaft (31) is connected to the main shaft (200), and the first rotating arm (201) is rotatably connected to the main shaft (200) through the first connecting shaft (31); The second connecting shaft (32) passes through the second rotating part (2021) and the second elastic member (602) along the first direction (Y); the second connecting shaft (32) is connected to the main shaft (200), and the second rotating arm (202) is rotatably connected to the main shaft (200) through the second connecting shaft (32).

8. The rotating shaft mechanism (20) according to claim 6 or 7, characterized in that, The at least one intermediate elastic element (610) includes: The first intermediate elastic element (603) is offset from the rotation center of the first gear (21); The second intermediate elastic element (604) is offset from the rotation center of the second gear (22).

9. The rotating shaft mechanism (20) according to claim 8, characterized in that, The rotating shaft mechanism (20) also includes: A third connecting shaft (33); the first gear (21) passes through it along the first direction (Y); the first gear (21) rotates around the third connecting shaft (33); the third connecting shaft (33) is connected to the first damping member (221); A fourth connecting shaft (34); a second gear (22) passes through it along the first direction (Y); the second gear (22) rotates around the fourth connecting shaft (34); the fourth connecting shaft (34) is connected to the first damping member (221); A fifth connecting shaft (35); the first intermediate elastic member (603) passes through it along the first direction (Y); the fifth connecting shaft (35) is connected to the first damping member (221); A sixth connecting shaft (36); a second intermediate elastic member (604) passes through it along the first direction (Y); the sixth connecting shaft (36) is connected to the first damping member (221); The axis of the third connecting shaft (33) and the axis of the fourth connecting shaft (34) are located between the axis of the fifth connecting shaft (35) and the axis of the sixth connecting shaft (36).

10. The rotating shaft mechanism (20) according to claim 5, characterized in that, The rotating shaft mechanism (20) further includes at least one elastic element (60), the at least one elastic element (60) comprising: A first elastic element (601) is disposed within the main shaft (200) along the first direction (Y), and the first elastic element (601) is connected to the first damping element (221); the axis of the first elastic element (601) is offset from the rotation center of the first rotating part (2011); The second elastic element (602) is disposed in the main shaft (200) along the first direction (Y), and the second elastic element (602) is connected to the first damping element (221); the axis of the second elastic element (602) is offset from the rotation center of the second rotating part (2021); At least one intermediate elastic element (610) is disposed within the main shaft (200) along the first direction (Y) and between the first elastic element (601) and the second elastic element (602); the intermediate elastic element is connected to the first damping element (221); the axis of one of the intermediate elastic elements coincides with the rotation center of the first gear (21) or the second gear (22).

11. The rotating shaft mechanism (20) according to any one of claims 2-10, characterized in that, The rotating shaft mechanism (20) also includes: The third rotating arm (203) includes a third rotating part (2031) and a third extended part (2032) connected to each other; the third extended part (2032) is connected to the first fixed frame (211) in a transmission manner; the third rotating part (2031) is rotatably connected to the main shaft (200); the rotation center of the third rotating part (2031) coincides with the rotation center of the first rotating part (2011); the axis of the third rotating part (2031) coincides with the axis of the first rotating part (2011). The fourth rotating arm (204) is located along the second direction (X). The third rotating arm (203) and the fourth rotating arm (204) are located on both sides of the main shaft (200), and the third rotating arm (203) and the fourth rotating arm (204) are connected in a transmission manner. The fourth rotating arm (204) includes a fourth rotating part (2041) and a fourth extension part (2042) connected to each other. The fourth extension part (2042) is connected in a transmission manner to the second fixed frame (212). The fourth rotating part (2041) is rotatably connected to the main shaft (200). The rotation center of the fourth rotating part (2041) coincides with the rotation center of the second rotating part (2021). The axis of the fourth rotating part (2041) coincides with the axis of the second rotating part (2021).

12. The rotating shaft mechanism (20) according to claim 11, characterized in that, The third rotating part (2031) has a fifth cam surface (C5); the fifth cam surface (C5) has at least one fifth protrusion (55), the fifth cam surface (C5) has a fifth region (705) and a sixth region (706), the wall thickness of the third rotating part (2031) in the fifth region (705) is greater than the wall thickness of the third rotating part (2031) in the sixth region (706); the fifth protrusion (55) is located in the fifth region (705); The rotating shaft mechanism (20) also includes: A second damping element (222) is disposed within the main shaft (200); the second damping element (222) has a sixth cam surface (C6) on the side facing the third rotating part (2031), the sixth cam surface (C6) having at least one sixth protrusion (56); the shape of the sixth cam surface (C6) matches that of the fifth cam surface (C5), and the at least one fifth protrusion (55) is used to abut against the at least one sixth protrusion (56); At least one elastic element (60) has its two ends connected to the first damping element (221) and the second damping element (222).

13. The rotating shaft mechanism (20) according to claim 12, characterized in that, The fourth rotating part (2041) has a seventh cam surface (C7); the seventh cam surface (C7) has at least one seventh protrusion (57), the seventh cam surface (C7) has a seventh region (707) and an eighth region (708), the wall thickness of the fourth rotating part (2041) in the seventh region (707) is greater than the wall thickness of the fourth rotating part (2041) in the eighth region (708); the seventh protrusion (57) is located in the seventh region (707); The second damping member (222) has an eighth cam surface (C8) on the side facing the fourth rotating part (2041), the eighth cam surface (C8) having at least one eighth protrusion (58); the shape of the eighth cam surface (C8) matches that of the seventh cam surface (C7), and the at least one seventh protrusion (57) is used to abut against the at least one eighth protrusion (58).

14. The rotating shaft mechanism (20) according to claim 13, characterized in that, The third rotating part (2031) has a ninth cam surface (C9), the ninth cam surface (C9) has at least one ninth protrusion (59), the ninth cam surface (C9) has a ninth region (709) and a tenth region (710), the wall thickness of the third rotating part (2031) in the ninth region (709) is greater than the wall thickness of the third rotating part (2031) in the tenth region (710); the ninth protrusion (59) is located in the ninth region (709); The fourth rotating part (2041) has a tenth cam surface (C10), the tenth cam surface (C10) has at least one tenth protrusion (510), the tenth cam surface (C10) has an eleventh region (711) and a twelfth region (712), the wall thickness of the fourth rotating part (2041) in the eleventh region (711) is greater than the wall thickness of the fourth rotating part (2041) in the twelfth region (712); the tenth protrusion (510) is located in the eleventh region (711); The rotating shaft mechanism (20) further includes a stop (230); the stop (230) is located inside the main shaft (200) and connected to the main shaft (200); the stop (230) is disposed on the side of the third rotating arm (203) and the fourth rotating arm (204) away from the second damping member (222); the stop (230) has an eleventh cam surface (C11) and a twelfth cam surface (C12); The eleventh cam surface (C11) has at least one eleventh protrusion (511); the eleventh cam surface (C11) matches the shape of the ninth cam surface (C9), and the at least one eleventh protrusion (511) is used to abut against the at least one ninth protrusion (59); The twelfth cam surface (C12) has at least one twelfth protrusion (512); the twelfth cam surface (C12) matches the shape of the tenth cam surface (C10), and the at least one twelfth protrusion (512) is used to abut against the at least one tenth protrusion (510).

15. The rotating shaft mechanism (20) according to any one of claims 1-14, characterized in that, The first extension portion (2012) is slidably connected to the first fixing frame (211); The second extension (2022) is slidably connected to the first fixing frame (211).

16. A display terminal (01), characterized in that, include: Display screen (10); First shell (11); Second shell (12); The rotating shaft mechanism (20) as described in any one of claims 1-15; the rotating shaft mechanism (20) is located between the first housing (11) and the second housing (12), and the display screen (10) is connected to the first housing (11) and the second housing (12); the display screen (10) covers the rotating shaft mechanism (20).

Images