Connection device and terminal device

Abstract

The application discloses a connecting device and a terminal device, the connecting device comprises a middle frame fixing part, a first transmission assembly, a second transmission assembly and a third transmission assembly, the first transmission assembly can rotate relative to the middle frame fixing part in the rotating process of the middle frame fixing part, the second transmission assembly is hinged with the first transmission assembly, the second end of the second transmission assembly is slidably connected with the first transmission assembly, the second transmission assembly is used for converting the rotating action of the first transmission assembly into the moving action along the second direction, and the third end of the third transmission assembly is used for pushing the middle frame fixing part to move to the side away from the first transmission assembly or to move to the side towards the first transmission assembly in the rotating process of the middle frame fixing part. The connecting device of the embodiment of the application can accurately compensate the screen length in the folding process of the screen, prevents the screen from being wrinkled, and improves the service life of the screen.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mobile terminals, and in particular to a connecting device and a terminal device. BACKGROUND

[0002] Terminal devices with folding screens have become a focus of competition among terminal manufacturers. In order to ensure the normal folding function of the terminal device, a hinge is provided at the position where the screen is folded to connect two middle frames. Since the screen has a certain thickness, the lengths of the front surface and the back surface of the screen after being folded are different, and the screen is prone to wrinkles after being folded, which affects the normal use of the terminal device. SUMMARY

[0003] The present application aims to at least partially solve one of the technical problems in the related art.

[0004] To this end, an embodiment of the present application proposes a connecting device and a terminal device.

[0005] The connecting device of the embodiment of the present application comprises:

[0006] a middle frame fixing member;

[0007] a first transmission assembly, which is rotatable relative to the middle frame fixing member during rotation of the middle frame fixing member;

[0008] a second transmission assembly, a first end of the second transmission assembly being hinged to the first transmission assembly at a first hinge center, a rotation center of the first transmission assembly not coinciding with the first hinge center, a second end of the second transmission assembly being in sliding connection with the first transmission assembly, the second transmission assembly being configured to convert a rotation action of the first transmission assembly into a movement action in a second direction;

[0009] a third transmission assembly, a first end of the third transmission assembly being hinged to the second transmission assembly, a second end and a third end of the third transmission assembly being in sliding connection with the middle frame fixing member, respectively, the second end and the third end of the third transmission assembly being located on two sides of the first end of the third transmission assembly, respectively;

[0010] the third end of the third transmission assembly being configured to push the middle frame fixing member to move away from or towards the first transmission assembly during rotation of the middle frame fixing member.

[0011] The connecting device of the embodiment of the present application can precisely compensate for the length of the screen during folding of the screen, prevent the screen from being wrinkled, and improve the service life of the screen.

[0012] In some embodiments, the first transmission assembly comprises:

[0013] a first transmission member provided with a first helical tooth portion;

[0014] a second transmission member provided with a second helical tooth portion engaged with the first helical tooth portion, the second transmission member being rotatable relative to the first transmission member through the first helical tooth portion and the second helical tooth portion; a first end of the second transmission assembly being articulated with the second transmission member at a first articulation center;

[0015] a rotation center of the second transmission member not coinciding with the first articulation center; a second end of the second transmission assembly being slidingly connected with the first transmission member; the second transmission assembly being configured to convert a rotation action of the second transmission member into a movement action in the second direction.

[0016] In some embodiments, the second transmission assembly comprises:

[0017] a synchronization member slidingly connected with the first transmission member, a first end of the third transmission assembly being articulated with the synchronization member.

[0018] a shaft sleeve slidingly connected with the first transmission member, the shaft sleeve being connected with the synchronization member;

[0019] a linkage member having a first end articulated with the second transmission member at a first articulation center and a second end articulated with the shaft sleeve.

[0020] In some embodiments, the synchronization member comprises:

[0021] a first synchronization member and a second synchronization member respectively slidingly arranged at two ends of the first transmission member in the second direction, a first end of the third transmission assembly being articulated with at least one of the first synchronization member and the second synchronization member.

[0022] In some embodiments, the synchronization member comprises:

[0023] a first sliding portion having a hollow structure with an opening, the opening of the first sliding portion extending in the second direction, a side wall of the first sliding portion being provided with a notch towards a side of the shaft sleeve, the first sliding portion and the shaft sleeve being slidingly arranged on the first transmission assembly, and the shaft sleeve being clamped at the notch;

[0024] a first connecting portion extending from the side wall of the first sliding portion towards a side away from the notch;

[0025] A first hinge portion is located on the first connecting portion, and the first hinge portion is hinged with a first end of the third transmission assembly.

[0026] In some embodiments, the first connecting portion is in a stepped structure, and a biasing structure is arranged on the first connecting portion close to the first hinge portion.

[0027] In some embodiments, the shaft sleeve includes:

[0028] A first shaft sleeve and a second shaft sleeve are respectively slidably arranged at two ends of the first transmission member in the second direction, the first shaft sleeve is clamped at a notch of the first synchronization member, and the second shaft sleeve is clamped at a notch of the second synchronization member.

[0029] In some embodiments, the shaft sleeve includes:

[0030] A second sliding portion is in a hollow structure with an opening, the opening of the second sliding portion extends in the second direction, the second sliding portion is slidably sleeved on the first transmission assembly and clamped at a notch of the first sliding portion;

[0031] A second connecting portion is connected with the second sliding portion and extends in the first direction towards a side away from the first sliding portion;

[0032] A second hinge portion is located on the second connecting portion, and the second hinge portion is hinged with a second end of the linkage member.

[0033] In some embodiments, the linkage member includes:

[0034] A first linkage member and a second linkage member, a first end of the first linkage member is hinged with the second transmission member, a second end of the first linkage member is hinged with a second hinge portion of the first shaft sleeve, a first end of the second linkage member is hinged with the second transmission member, and a second end of the second linkage member is hinged with the second hinge portion of the second shaft sleeve.

[0035] In some embodiments, the linkage member includes:

[0036] A third connecting portion is in a bent strip structure;

[0037] A first protrusion is arranged on a lower surface of a first end of the third connecting portion, and the first protrusion is hinged with the second transmission member;

[0038] A second protrusion is arranged on a lower surface of a second end of the third connecting portion, and the second protrusion is hinged with the second hinge portion.

[0039] In some embodiments, the third transmission assembly comprises:

[0040] a swing arm, a first end of the swing arm being hinged to the first hinge, a second end of the swing arm being slidably connected to the middle frame fixing member along a second direction;

[0041] a sliding block, the sliding block being slidably connected to the middle frame fixing member along a first direction, a third end of the swing arm being hinged to the sliding block.

[0042] In some embodiments, the swing arm comprises:

[0043] a first swing arm and a second swing arm, a first end of the first swing arm being hinged to the first hinge of the first synchronous member, a first end of the second swing arm being hinged to the first hinge of the second synchronous member, a third end of the first swing arm and a third end of the second swing arm being hinged to the sliding block.

[0044] In some embodiments, the sliding block comprises:

[0045] a sliding block body, a sliding groove being provided on the middle frame fixing member along the first direction, the sliding block body being slidably provided in the sliding groove;

[0046] a connecting segment, the connecting segment being connected to the sliding block body, the connecting segment penetrating through the third end of the first swing arm and the third end of the second swing arm respectively.

[0047] In some embodiments, the connecting device further comprises a support member, an arc-shaped insertion member being provided on a side of the support member away from the first transmission assembly along the first direction, an arc-shaped slot being provided on the middle frame fixing member, the insertion member being rotatably fitted in the arc-shaped slot, the third transmission assembly being slidably connected to the support member to drive the support member to rotate relative to the middle frame fixing member.

[0048] In some embodiments, the support member is provided with a rib plate adjacent to a side of the middle frame fixing member, the rib plate extending along the first direction, an inclined sliding groove being provided on the rib plate, the inclined sliding groove being inclined in a direction away from the first transmission assembly along the first direction towards a direction away from the support member, a slot shaft being provided on the connecting segment, the slot shaft being slidably fitted in the inclined sliding groove.

[0049] In some embodiments, the connecting device further comprises a locking assembly slidably connected with the second transmission assembly in the first direction, the second transmission assembly comprising at least a first side wall and a second side wall, the locking assembly being configured to lock the middle frame fixing member in the first position when the locking assembly abuts against the first side wall of the second transmission assembly, and the locking assembly being configured to lock the middle frame fixing member in the second position when the locking assembly abuts against the second side wall of the second transmission assembly.

[0050] In some embodiments, the locking assembly comprises a first locking assembly slidably connected with the first shaft sleeve in the first direction and a second locking assembly slidably connected with the second shaft sleeve in the first direction.

[0051] In some embodiments, the locking assembly comprises:

[0052] a first stopper slidably arranged on the shaft sleeve of the second transmission assembly in the first direction;

[0053] a second stopper slidably arranged on the shaft sleeve of the second transmission assembly in the first direction, and the first stopper or the second stopper abutting against the synchronizer of the second transmission assembly.

[0054] the locking assembly being configured to lock the middle frame fixing member in the first position when the first stopper or the second stopper abuts against the first side wall of the second transmission assembly, and the locking assembly being configured to lock the middle frame fixing member in the second position when the first stopper or the second stopper abuts against the second side wall of the second transmission assembly.

[0055] In some embodiments, the first stopper comprises a first stopper portion and a first accommodating portion connected with each other, the shaft sleeve of the second transmission assembly is provided with a second accommodating portion arranged in the first direction, the first stopper portion is arranged at one end of the second accommodating portion, and the first accommodating portion is located in the second accommodating portion.

[0056] the second stopper comprises a second stopper portion and a third sliding portion connected with each other, the second stopper portion is arranged at the other end of the second accommodating portion, and the third sliding portion is slidably fitted in the first accommodating portion;

[0057] the locking assembly further comprises an elastic portion located in the second accommodating portion and sleeved outside the first accommodating portion, one end of the elastic portion abuts against the first stopper portion, and the other end of the elastic portion abuts against the second stopper portion.

[0058] In some embodiments, the first sliding part has a first side wall and a second side wall, the extension plane of the first side wall is perpendicular to the extension plane of the second side wall, in the first position, the first side wall abuts against the first stop part or the second stop part, in the second position, the second side wall abuts against the first stop part or the second stop part.

[0059] In some embodiments, the middle frame fixing member comprises:

[0060] a middle frame fixing member body;

[0061] a fourth connecting part, the fourth connecting part is arranged on one side of the middle frame fixing member body adjacent to the third transmission assembly, a sliding groove extending in the second direction is arranged on the fourth connecting part, and the second end of the third transmission assembly is slidably fitted into the sliding groove on the fourth connecting part;

[0062] a fifth connecting part, the fifth connecting part is arranged on one side of the middle frame fixing member body adjacent to the third transmission assembly, the fifth connecting part and the fourth connecting part are arranged in the second direction, a sliding groove extending in the first direction is arranged on the fifth connecting part, and the third end of the third transmission assembly is slidably fitted into the sliding groove on the fifth connecting part.

[0063] In some embodiments, the connecting device further comprises a rotating shaft cover, the first transmission assembly is hinged to the rotating shaft cover, and at least part of the first transmission assembly and the second transmission assembly is arranged in the rotating shaft cover.

[0064] The terminal device of another aspect embodiment of the present application comprises the connecting device of any one of the above-mentioned embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0065] Figure 1 is a schematic diagram of a terminal device of an embodiment of the present application.

[0066] Figure 2 is a schematic diagram of a connecting device of an embodiment of the present application.

[0067] Figure 3 is a schematic diagram of power transmission of a connecting device of an embodiment of the present application.

[0068] Figure 4 is an exploded view of a connecting device of an embodiment of the present application.

[0069] Figure 5 is a schematic diagram of a middle frame fixing member of an embodiment of the present application.

[0070] Figure 6 is a schematic diagram of a shaft sleeve of an embodiment of the present application.

[0071] Figure 7 is a schematic view of a locking assembly of an embodiment of the present application.

[0072] Figure 8 is a schematic view of a slider of an embodiment of the present application.

[0073] Figure 9 is a schematic view of an assembly of a synchronizing member and a swing arm of an embodiment of the present application.

[0074] Figure 10 is a schematic view of a linkage member of an embodiment of the present application.

[0075] Figure 11 is a schematic view of a support member of an embodiment of the present application.

[0076] Figure 12 is another schematic view of a support member of an embodiment of the present application.

[0077] Figure 13 is a schematic view of a first transmission assembly of an embodiment of the present application.

[0078] Figure 14 is a schematic view of a connecting device in an unfolded state of an embodiment of the present application.

[0079] Figure 15 is a schematic view of a connecting device in an unfolded state turning to a closed state of an embodiment of the present application.

[0080] Figure 16 is a schematic view of a connecting device in a closed state of an embodiment of the present application.

[0081] Figure 17 is a partial enlarged view of a connecting device in a closed state of an embodiment of the present application.

[0082] Figure 18 is another schematic view of a connecting device in a closed state of an embodiment of the present application.

[0083] Figure 19 is a sectional view of a connecting device in an unfolded state of an embodiment of the present application.

[0084] Figure 20 is a sectional view of a connecting device in an unfolded state turning to a closed state of an embodiment of the present application.

[0085] Figure 21 is a sectional view of a connecting device in a closed state of an embodiment of the present application.

[0086] Figure 22 is a schematic view of a third transmission assembly of an embodiment of the present application.

[0087] Figure 23is a schematic view of a support and a middle frame fixing member of an embodiment of the present application.

[0088] Figure 24 is a sectional view of an assembled state of a support and a sliding block of an embodiment of the present application.

[0089] Reference signs:

[0090] The connecting device 100, the terminal equipment 200,

[0091] The rotating shaft cover 1,

[0092] The middle frame fixing member 2, the middle frame fixing member body 21, the arc-shaped groove 211, the fourth connecting part 22, the fifth connecting part 23,

[0093] The first transmission assembly 3, the first transmission part 31, the second transmission part 32,

[0094] The second transmission assembly 4, the synchronization part 41, the first synchronization part 411, the second synchronization part 412, the first sliding part 413, the first side wall 414, the second side wall 415, the first connecting part 414, the first hinged part 415, the shaft sleeve 42, the first shaft sleeve 421, the second shaft sleeve 422, the second sliding part 423, the second connecting part 424, the second hinged part 425, the second accommodating part 426, the linkage part 43, the first linkage part 431, the second linkage part 432, the third connecting part 433, the first protrusion 434, the second protrusion 435,

[0095] The third transmission assembly 5, the swing arm 51, the first swing arm 511, the second swing arm 512, the sliding block 53, the sliding block body 531, the connecting section 532, the slot shaft 533,

[0096] The locking assembly 6, the first locking assembly 61, the second locking assembly 62, the first stop part 63, the first stop part 631, the first accommodating part 632, the second stop part 64, the second stop part 641, the third sliding part 642, the elastic part 65,

[0097] The support 7, the plug-in part 71, the rib plate 72, the inclined sliding groove 721;

[0098] The screen 8. DETAILED DESCRIPTION

[0099] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0100] The connecting device 100 according to the embodiment of the present application is described below in conjunction with the accompanying drawings.

[0101] As Figures 1-24As shown, the connecting device 100 of the embodiment of the present application comprises a middle frame fixing member 2, a first transmission assembly 3, a second transmission assembly 4 and a third transmission assembly 5.

[0102] The middle frame fixing member 2 is used for mounting the middle frame, and the middle frame fixing member 2 can rotate together with the middle frame and the screen 8. The first transmission assembly 3 can rotate relative to the middle frame fixing member 2 during the rotation of the middle frame fixing member 2, that is, the rotation of the middle frame fixing member 2 can drive the rotation of the first transmission assembly 3.

[0103] The first end of the second transmission assembly 4 is hinged to the first transmission assembly 3 at a first hinge center, and the rotation center of the first transmission assembly 3 does not coincide with the first hinge center. The second end of the second transmission assembly 4 is in sliding connection with the first transmission assembly 3. The second transmission assembly 4 is used for converting the rotation action of the first transmission assembly 3 into a movement action in the second direction. It can be understood that the first transmission assembly 3 and the second transmission assembly 4 form a mechanism similar to a crank connecting rod. The first transmission assembly 3 and the second transmission assembly 4 are combined together to convert the rotation action of the middle frame into a movement action in the second direction.

[0104] The third transmission assembly 5 is a bracket structure similar to a triangle. The third transmission assembly 5 has a first end, a second end and a third end. The first end of the third transmission assembly 5 is hinged to the second transmission assembly 4. The second end and the third end of the third transmission assembly 5 are in sliding connection with the middle frame fixing member 2, respectively. The second end and the third end of the third transmission assembly 5 are located on both sides of the first end of the third transmission assembly 5 in the second direction, respectively. The third end of the third transmission assembly 5 is used for pushing the middle frame fixing member 2 to move away from or towards the first transmission assembly 3 during the rotation of the middle frame fixing member 2.

[0105] It should be noted that the third transmission assembly 5 utilizes the principle of a lever. With the first end of the third transmission assembly 5 as a fulcrum, the second end and the third end move in opposite directions as the second transmission assembly 4 moves in the second direction. In this way, during the folding of the screen 8, the middle frame fixing member 2 drives the middle frame to move away from or towards the first transmission assembly 3, which can accurately compensate for the length of the screen 8, prevent the screen 8 from wrinkling, and improve the service life of the screen 8.

[0106] As Figure 3 and Figure 13As shown, in some embodiments, the first transmission assembly 3 includes a first transmission member 31 and a second transmission member 32. The first transmission member 31 is a helical gear shaft with a first helical tooth portion. The first transmission member 31 is arranged along a second direction, and the first helical tooth portion is located at the middle position of the helical gear shaft. The second transmission member 32 is a helical gear with a second helical tooth portion. The first helical tooth portion meshes with the second helical tooth portion. The rotation of the second middle frame fixing member 2 can drive the first transmission member 31 to rotate, and the first transmission member 31 in turn drives the second transmission member 32 to rotate.

[0107] Furthermore, the first end of the second transmission assembly 4 is hinged to the second transmission member 32 at the first hinge center, and the rotation center of the second transmission member 32 does not coincide with the first hinge center; in other words, the first hinge center is located on the second transmission member 32, and the first hinge center is different from the rotation center of the second transmission member 32. When the second transmission member 32 rotates, it can drive the first end of the second transmission assembly 4 to rotate with a larger rotation radius. The second end of the second transmission assembly 4 is slidably connected to the first transmission member 31. Thus, the second transmission assembly 4 and the first transmission assembly 31 form a crank-connecting rod mechanism, and the second transmission assembly 4 can convert the rotational action of the second transmission member 32 into a movement action along the second direction.

[0108] like Figure 4 As shown, specifically, the second transmission assembly 4 includes a synchronizing member 41, a bushing 42, and a linkage member 43. The synchronizing member 41 is slidably connected to the first transmission member 31. The first end of the third transmission assembly 5 is hinged to the synchronizing member 41. The synchronizing member 41 slides on the first transmission member 31 along the second direction, which can drive the third transmission assembly 5 to rotate, thereby driving the middle frame fixing member 2 to move away from the first transmission assembly 3 or towards the first transmission assembly 3.

[0109] The bushing 42 is slidably connected to the first transmission member 31 and is connected to the synchronizing member 41. The first end of the linkage member 43 is hinged to the second transmission member 32 at the first hinge center, and the second end of the linkage member 43 is hinged to the bushing 42. Thus, the rotation of the second transmission member 32 drives the first end of the linkage member 43 to rotate, and the second end of the linkage member 43 slides synchronously along the second direction on the first transmission member 31, while simultaneously driving the synchronizing member 41 to slide along the second direction.

[0110] It should be noted that there are two synchronization components 41, namely the first synchronization component 411 and the second synchronization component 412. The first synchronization component 411 and the second synchronization component 412 are slidably disposed at both ends of the first transmission component 31 in the second direction. The third transmission component 5 can be one or two, and preferably two. The first ends of the two third transmission components 5 are respectively hinged to the first synchronization component 411 and the second synchronization component 412.

[0111] like Figure 9As shown, the synchronizing member 41 includes a first sliding part 413, a first connecting part 414, and a first hinge part 415. The first sliding part 413 is a hollow structure with an opening. The opening of the first sliding part 413 extends along the second direction. The side wall of the first sliding part 413 is provided with a notch facing the bushing 42. The first sliding part 413 and the bushing 42 are slidably sleeved on the first transmission assembly 3, and the bushing 42 is engaged at the notch. Thus, the bushing 42 can drive the first sliding part to slide synchronously along the first transmission member 31.

[0112] The first connecting portion 414 extends from the side wall of the first sliding portion 413 toward the side away from the notch. The first connecting portion 414 has a stepped structure, and an offset structure is provided on the first connecting portion 414 near the first hinge portion 415. The first hinge portion 415 is located at the end of the first connecting portion 414 away from the first sliding portion 413. The first hinge portion 415 is hinged to the first end of the third transmission assembly 5. The hinge method is preferably pin connection.

[0113] Similarly, the bushing 42 includes a first bushing 421 and a second bushing 422. The two bushings 42 are respectively arranged corresponding to the two synchronizing rods. The first bushing 421 and the second bushing 422 are respectively slidably arranged at both ends of the first transmission member 31 in the second direction. The first bushing 421 is engaged with the notch of the first synchronizing member 411, and the second bushing 422 is engaged with the notch of the second synchronizing member 412.

[0114] like Figure 6 As shown, specifically, the bushing 42 includes a second sliding part 423, a second connecting part 424, and a second hinge part 425. The structure of the second sliding part 423 is similar to that of the first sliding part 413, which is also a hollow structure with an opening. The opening of the second sliding part 423 extends along the second direction. The second sliding part 423 is slidably sleeved on the first transmission assembly 3 and engaged with the notch of the first sliding part 413.

[0115] The second connecting part 424 is connected to the second sliding part 423 and extends along the first direction toward the side opposite to the first sliding part 413. The second hinge part 425 is located on the side of the second connecting part 424 opposite to the second transmission member 32. The second hinge part 425 is hinged to the second end of the linkage member 43. The hinge method is preferably pin connection.

[0116] Correspondingly, the linkage 43 includes a first linkage 431 and a second linkage 432. The two linkages 43 correspond to the two bushings 42 respectively. The first end of the first linkage 431 is hinged to the second transmission member 32, and the second end of the first linkage 431 is hinged to the second hinge portion 425 of the first bushing 421. The first end of the second linkage 432 is hinged to the second transmission member 32, and the second end of the second linkage 432 is hinged to the second hinge portion 425 of the second bushing 422.

[0117] As Figure 10 shown, the linkage 43 includes a third connecting portion 433, a first protrusion 434 and a second protrusion 435, the third connecting portion 433 is a bent strip structure, the first protrusion 434 is arranged on the lower surface of the first end of the third connecting portion 433, the first protrusion 434 is hinged with the second transmission member 32, the second protrusion 435 is arranged on the lower surface of the second end of the third connecting portion 433, and the second protrusion 435 is hinged with the second hinge portion 425. It should be noted that the first protrusion 434 and the second protrusion 435 can also be replaced by through holes on the third connecting portion 433, and a protrusion corresponding to the through hole is arranged on the second hinge portion 425, and the same purpose can also be achieved.

[0118] In some embodiments, the third transmission assembly 5 includes a swing arm 51 and a sliding block 53, the swing arm 51 has a first end, a second end and a third end, and the three end points are triangularly distributed, the first end of the swing arm 51 is hinged with the first hinge portion 415, the second end of the swing arm 51 is slidably connected with the middle frame fixing member 2 along the second direction, the sliding block 53 is slidably connected with the middle frame fixing member 2 along the first direction, and the third end of the swing arm 51 is hinged with the sliding block 53.

[0119] In this way, when the synchronization member 41 slides along the second direction, one end of the swing arm 51 is driven to slide along the second direction, at the same time, the second end of the swing arm 51 slides along the second direction on the middle frame fixing member 2, and the third end of the swing arm 51 slides along the first direction on the middle frame fixing member 2 through the sliding block 53, that is, the third end of the swing arm 51 drives the middle frame fixing member 2 to move away from the first transmission assembly 3 or move towards the first transmission assembly 3.

[0120] Similarly, the swing arm 51 includes a first swing arm 511 and a second swing arm 512, the two swing arms 51 correspond to the two synchronization members 41 respectively, the first end of the first swing arm 511 is hinged with the first hinge portion 415 of the first synchronization member 411, the first end of the second swing arm 512 is hinged with the first hinge portion 415 of the second synchronization member 412, and the third end of the first swing arm 511 and the third end of the second swing arm 512 are both hinged with the sliding block 53, and the hinged mode is preferably pin connection.

[0121] As Figure 8 shown, in some embodiments, the sliding block 53 includes a sliding block body 531 and a connecting segment 532, a sliding groove is arranged on the middle frame fixing member 2 along the first direction, the sliding block body 531 is slidably arranged in the sliding groove, the connecting segment 532 is connected with the sliding block body 531, and the connecting segment 532 penetrates through the third end of the first swing arm 511 and the third end of the second swing arm 512 respectively.

[0122] The connecting segment 532 penetrates the third end of the first swing arm 511 and the third end of the second swing arm 512 in sequence to rotatably connect the two. That is, the third end of the first swing arm 511 and the third end of the second swing arm 512 can rotate around the connecting segment 532. When the slider body 531 slides in the sliding groove, the third end of the first swing arm 511 and the third end of the second swing arm 512 rotate around the connecting segment 532. Alternatively, when the first swing arm 511 and the first synchronous part 411 rotate relative to each other, and when the second swing arm 512 and the second synchronous part 412 rotate relative to each other, the third end of the first swing arm 511 and the third end of the second swing arm 512 can drive the slider body 531 to slide in the sliding groove in the first direction, thereby pushing the middle frame fixing part 2 to move in the first direction.

[0123] As shown in Figure 11 and 12 , in some embodiments, the connecting device 100 further comprises a support part 7, which is a plate-shaped structure and serves to support the screen 8. The support part 7 is provided with an arc-shaped plug-in part 71 on the side away from the first transmission assembly 3 in the first direction. The middle frame fixing part 2 is provided with an arc-shaped groove 211, and the plug-in part 71 is rotatably fitted in the arc-shaped groove 211. The third transmission assembly 5 is slidably connected with the support part 7 to drive the support part 7 to rotate relative to the middle frame fixing part 2.

[0124] The rotatable fitting of the plug-in part 71 in the arc-shaped groove 211 can make the support part 7 rotate along the trajectory of the arc-shaped groove 211 when the middle frame fixing part 2 is in different positions, so that the support part 7 can guide the screen 8 to be in a suitable state.

[0125] For example, when the connecting device 100 of the embodiment of the present application is connected with the screen 8 to form a foldable mobile phone or a foldable tablet, the face of the support part 7 facing the screen 8 is parallel or substantially parallel to the screen 8 when the middle frame fixing part 2 is in the unfolded state, so that the screen 8 is in the unfolded state. When the middle frame fixing part 2 is in the closed position, the face of the support part 75 facing the screen 8 is an inclined surface, the support part 7 guides the screen 8 to the bent shape, and the support part 7 leaves an appropriate space for the bent part of the screen 8.

[0126] As shown in Figures 14-17 , Figure 23 and Figure 24 , in some embodiments, the support part 7 is provided with a rib plate 72 adjacent to one side of the middle frame fixing part 2. The rib plate 72 extends in the first direction, and the rib plate 72 is provided with an inclined sliding groove 721. The inclined sliding groove 721 is inclined in the first direction away from the first transmission part towards the direction away from the support part 7. The connecting segment 532 is provided with a groove shaft 533, which is slidably fitted in the inclined sliding groove 721.

[0127] Thus, when the slot shaft 533 slides in the inclined sliding groove 721, the support member 7 is driven to rotate relative to the middle frame fixing member 2, so as to ensure that the surface of the support member 7 facing the screen 8 is parallel or substantially parallel to the screen 8 when the middle frame fixing member 2 is in the unfolded state, and the middle frame fixing member 2 guides the screen 8 to the folded state and the support member 7 leaves a suitable space for the folded screen 8.

[0128] As shown in Figures 19-21 In some embodiments, the connecting device 100 further comprises a locking assembly 6 for locking the middle frame fixing member 2, the locking assembly 6 is slidably connected with the second transmission assembly 4 in the first direction, and the second transmission assembly 4 at least comprises: a first side wall 414 and a second side wall 415, when the locking assembly 6 abuts against the first side wall 414 of the second transmission assembly 4, the locking assembly 6 is used for locking the middle frame fixing member 2 at the first position; when the locking assembly 6 abuts against the second side wall 415 of the second transmission assembly 4, the locking assembly 6 is used for locking the middle frame fixing member 2 at the second position.

[0129] It can be understood that the middle frame fixing member 2 is rotatable between the first position and the second position, and the locking assembly 6 can lock the middle frame fixing member 2 at the first position or the second position. In some embodiments, the locking assembly 6 comprises a first locking assembly 61 and a second locking assembly 62, the first locking assembly 61 is slidably connected with the first shaft sleeve 421 in the first direction, the first locking assembly 61 corresponds to the first synchronization member 411, and the second locking assembly 62 is slidably connected with the second shaft sleeve 422 in the first direction, the second locking assembly 62 corresponds to the second synchronization member 412.

[0130] The locking assembly 6 comprises a first stopper 63 and a second stopper 64, the first stopper 63 is slidably arranged on the shaft sleeve 42 of the second transmission assembly 4 in the first direction, the second stopper 64 is slidably arranged on the shaft sleeve 42 of the second transmission assembly 4 in the first direction, and the first stopper 63 or the second stopper 64 abuts against the synchronization member 41 of the second transmission assembly 4.

[0131] When the first stopper 63 or the second stopper 64 abuts against the first side wall 414 of the second transmission assembly 4, the locking assembly 6 locks the middle frame fixing member 2 at the first position, and when the first stopper 63 or the second stopper 64 abuts against the second side wall 415 of the second transmission assembly 4, the locking assembly 6 locks the middle frame fixing member 2 at the second position.

[0132] As shown in Figure 7As shown, specifically, the first stopper 63 comprises a first stop portion 631 and a first accommodating portion 632 connected with each other, the shaft sleeve 42 of the second transmission assembly 4 is provided with a second accommodating portion 426 arranged in the first direction, the first stop portion 631 is arranged at one end of the second accommodating portion 426, the first accommodating portion 632 is located in the second accommodating portion 426, the second stopper 64 comprises a second stop portion 641 and a third sliding portion 642 connected with each other, the second stop portion 641 is arranged at the other end of the second accommodating portion 426, and the third sliding portion 642 is slidably matched in the first accommodating portion 632. It can be understood that the first stop portion 631 and the second stop portion 641 are oppositely arranged at two ends of the shaft sleeve 42 and can slide relative to each other in the first direction.

[0133] The locking assembly 6 further comprises an elastic portion 65, which is preferably a spring. The elastic portion 65 is located in the second accommodating portion 426 of the shaft sleeve 42 and is sleeved outside the first accommodating portion 632. One end of the elastic portion 65 abuts against the first stop portion 631, and the other end abuts against the second stop portion 641.

[0134] The first sliding portion 413 has a first side wall 414 and a second side wall 415, and the extension surface of the first side wall 414 is perpendicular to the extension surface of the second side wall 415. In the first position, the first side wall 414 abuts against the first stop portion 631 or the second stop portion 641, and in the second position, the second side wall 415 abuts against the first stop portion 631 or the second stop portion 641. Thus, when the middle frame fixing member 2 is in the first position, the first side wall 414 abuts against the first stop portion 631 or the second stop portion 641 in a surface-to-surface manner, so that the positions of the first synchronous hole and the second synchronous member 412 are relatively stable. When the middle frame fixing member 2 is in the second position, the second side wall 415 abuts against the first stop portion 631 or the second stop portion 641 in a surface-to-surface manner, so that the positions of the first synchronous hole 331 and the second synchronous member 412 are relatively stable.

[0135] It should be noted that when the first side wall 414 or the second side wall 415 abuts against the first stop portion 631 or the second stop portion 641, the compression amount of the elastic portion 65 is small, and under the rebounding action of the elastic portion 65, the first transmission member 31 cannot rotate, so as to achieve locking. Only under the action of an external force, the first transmission member 31 can rotate. When the included angle between the first side wall 414 and the second side wall 415 abuts against the first stop portion 631 or the second stop portion 641, the compression amount of the spring is large, and at this time, the first transmission member 31 will not be locked, and the elastic portion 65 will push one of the transmission members to rotate through the first side wall 414 or the second side wall 415 until it rotates to the first position or the second position. Thus, the user can obtain a damping feeling when rotating the middle frame fixing member 2.

[0136] In some embodiments, the middle frame fixing member 2 comprises a middle frame fixing member body 21 for connecting the support member 7, a fourth connecting portion 22 and a fifth connecting portion 23, the fourth connecting portion 22 and the fifth connecting portion 23 are arranged on the side of the middle frame fixing member body 21 adjacent to the third transmission assembly 5, and the fifth connecting portion 23 and the fourth connecting portion 22 are arranged in the second direction.

[0137] The fourth connecting portion 22 is provided with a sliding groove extending in the second direction, and the second end of the third transmission assembly 5 is slidably matched in the sliding groove on the fourth connecting portion 22. The fifth connecting portion 23 is provided with a sliding groove extending in the first direction, and the third end of the third transmission assembly 5 is slidably matched in the sliding groove on the fifth connecting portion 23.

[0138] It should be noted that the fourth connecting portion 22 is two, and the two fourth connecting portions 22 are arranged on both sides of the fifth connecting portion 23, and the two fifth connecting portions 23 are connected with the second end of the first swing arm 511 and the second end of the second swing arm 512, respectively.

[0139] In some embodiments, the connecting device 100 further comprises a rotating shaft cover 1, and the first transmission assembly 3 is rotatably arranged in the rotating shaft cover 1, and at least part of the first transmission assembly 3 and the second transmission assembly 4 is arranged in the rotating shaft cover 1.

[0140] In some embodiments, the middle frame fixing member 2 and the support member 7 are two, and the two middle frame fixing members 2 and the two support members 7 are arranged on both sides of the rotating shaft cover 1 in the first direction, and according to the number of the middle frame fixing member 2, part of the first transmission assembly 3, the second transmission assembly 4 and the third transmission assembly 5 is a symmetrical structure, for example, the first transmission member 31, the synchronous member 41, the swing arm 51, etc., and part of the structure is single, for example, the second transmission member 32, and the two symmetrical first transmission members 31 are rotatably connected with one second transmission member 32.

[0141] As shown in Figure 9 The application further provides a terminal device 200, which comprises the connecting device 100 according to any one of the embodiments.

[0142] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0143] Furthermore, the terms "first", "second", or the like are used merely to describe corresponding features, and do not imply or create a relative importance of one feature over another. Thus, a feature defined with "first" or "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless explicitly specified otherwise.

[0144] In the present application, unless specifically defined otherwise, the terms "mounting", "connected", "connection", "fixed", and the like are used broadly and exemplarily, and can be fixed connection, detachable connection, or integral; can be mechanical connection, electrical connection, or communication with each other; can be direct connection, or indirect connection via an intermediate medium; can be internal communication of two elements, or interaction between two elements, unless specifically defined otherwise. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0145] In the present application, unless specifically defined otherwise, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over", and "on" the second feature can be directly above or obliquely above the second feature, or simply indicate that the first feature is higher than the second feature in horizontal height. The first feature "below", "under", and "under" the second feature can be directly below or obliquely below the second feature, or simply indicate that the first feature is lower than the second feature in horizontal height.

[0146] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, different embodiments or examples described in the present specification and the features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0147] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and cannot be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements, and variations to the above embodiments within the scope of the present application.

Claims

1. A connection device, characterized in that The application relates to a hinge mechanism, which comprises: a middle frame fixing member; a first transmission assembly, which can rotate relative to the middle frame fixing member during rotation of the middle frame fixing member; a second transmission assembly, a first end of the second transmission assembly being hinged to the first transmission assembly at a first hinge center, the rotation center of the first transmission assembly not coinciding with the first hinge center, a second end of the second transmission assembly being slidably connected to the first transmission assembly, the second transmission assembly being used for converting the rotating action of the first transmission assembly into a moving action in a second direction; a third transmission assembly, a first end of the third transmission assembly being hinged to the second transmission assembly, a second end and a third end of the third transmission assembly being slidably connected to the middle frame fixing member, the second end and the third end of the third transmission assembly being respectively located on the two sides of the first end of the third transmission assembly; the third end of the third transmission assembly being used for pushing the middle frame fixing member to move away from or towards the first transmission assembly during rotation of the middle frame fixing member; the first transmission assembly comprising: a first transmission member, which is provided with a first bevel gear part; a second transmission member, which is provided with a second bevel gear part meshing with the first bevel gear part, the second transmission member being rotatable relative to the first transmission member through the first bevel gear part and the second bevel gear part, a first end of the second transmission assembly being hinged to the second transmission member at a first hinge center; the rotation center of the second transmission member not coinciding with the first hinge center, a second end of the second transmission assembly being slidably connected to the first transmission member; the second transmission assembly comprising: a synchronizing member, which is slidably connected to the first transmission member, a first end of the third transmission assembly being hinged to the synchronizing member; a shaft sleeve, which is slidably connected to the first transmission member, and the shaft sleeve being connected to the synchronizing member; a linkage member, a first end of the linkage member being hinged to the second transmission member at a first hinge center, a second end of the linkage member being hinged to the shaft sleeve; the third transmission assembly comprising: a swing arm, a first end of the swing arm being hinged to the synchronizing member, a second end of the swing arm being slidably connected to the middle frame fixing member in a second direction; a sliding block, which is slidably connected to the middle frame fixing member in a first direction, a third end of the swing arm being hinged to the sliding block; the first direction being the sliding direction of the sliding block, and the second direction being the sliding direction of the synchronizing member.

2. The connection device according to claim 1, characterized in that the synchronizing member comprising: a first synchronizing member and a second synchronizing member, the first synchronizing member and the second synchronizing member being respectively slidably arranged at the two ends of the first transmission member in the second direction, a first end of the third transmission assembly being hinged to at least one of the first synchronizing member and the second synchronizing member.

3. The connection device according to claim 2, characterized in that the synchronizing member comprising: The first sliding part is a hollow structure with an opening, the opening of the first sliding part extends along the second direction, a side wall of the first sliding part is provided with a notch towards the side of the shaft sleeve, the first sliding part and the shaft sleeve are slidably sleeved on the first transmission assembly, and the shaft sleeve is clamped at the notch; The first connecting part extends from the side wall of the first sliding part to the side away from the notch; The first connecting part is a stepped structure, and the first connecting part is provided with a biasing structure close to the first hinge part.

4. The connection device according to claim 3, characterized in that The shaft sleeve includes:

5. The connection device of claim 3, wherein The first shaft sleeve and the second shaft sleeve are respectively slidably arranged at two ends of the first transmission member in the second direction, the first shaft sleeve is clamped at the notch of the first synchronization member, and the second shaft sleeve is clamped at the notch of the second synchronization member. The shaft sleeve includes:

6. The connection device according to claim 5, characterized in that The second sliding part is a hollow structure with an opening, the opening of the second sliding part extends along the second direction, the second sliding part is slidably sleeved on the first transmission assembly and clamped at the notch of the first sliding part; The second connecting part is connected with the second sliding part and extends along the first direction to the side away from the first sliding part; The second connecting part is a stepped structure, and the second connecting part is provided with a biasing structure close to the second hinge part. The linkage includes:

7. The connection device according to claim 6, characterized in that The first linkage and the second linkage, the first end of the first linkage is hinged with the second transmission member, the second end of the first linkage is hinged with the second hinge part of the first shaft sleeve, the first end of the second linkage is hinged with the second transmission member, and the second end of the second linkage is hinged with the second hinge part of the second shaft sleeve. The linkage includes:

8. The connection device according to claim 7, characterized in that The third connecting part is a bent strip structure; The first protrusion is arranged on the lower surface of the first end of the third connecting part, and the first protrusion is hinged with the second transmission member; The second protrusion is arranged on the lower surface of the second end of the third connecting part, and the second protrusion is hinged with the second hinge part. The swing arm includes:

9. The connection device of claim 5, wherein, The first swing arm and the second swing arm, the first end of the first swing arm is hinged with the first hinge part of the first synchronization member, the first end of the second swing arm is hinged with the first hinge part of the second synchronization member, and the third end of the first swing arm and the third end of the second swing arm are hinged with the sliding block. The sliding block includes:

10. The connection device according to claim 9, characterized in that The sliding block body is slidably arranged in the sliding groove; The connecting section is connected with the sliding block body, and the connecting section penetrates the third end of the first swing arm and the third end of the second swing arm respectively. ​ 11. The connection device according to claim 10, characterized in that The support member is provided with an arc-shaped plug-in part on one side thereof away from the first transmission assembly in the first direction, and the middle frame fixing member is provided with an arc-shaped slot, the plug-in part being rotatably fitted in the arc-shaped slot, and the third transmission assembly being slidably connected with the support member to drive the support member to rotate relative to the middle frame fixing member.

12. The connection device of claim 11, wherein, The support member is provided with a rib plate on one side thereof adjacent to the middle frame fixing member, the rib plate extending in the first direction, and the rib plate being provided with an inclined sliding groove, the inclined sliding groove being inclined in the first direction from the first transmission assembly to the support member, and the connecting section being provided with a slot shaft slidably fitted in the inclined sliding groove.

13. The connection device of claim 5, wherein, The locking assembly is slidably connected with the second transmission assembly in the first direction, and the second transmission assembly at least includes a first side wall and a second side wall, the locking assembly being used to lock the middle frame fixing member in the first position when the locking assembly abuts against the first side wall of the second transmission assembly, and the locking assembly being used to lock the middle frame fixing member in the second position when the locking assembly abuts against the second side wall of the second transmission assembly.

14. The connection device according to claim 13, characterized in that The locking assembly includes a first locking assembly and a second locking assembly, the first locking assembly being slidably connected with the first shaft sleeve in the first direction, and the second locking assembly being slidably connected with the second shaft sleeve in the first direction.

15. The connection device of claim 13, wherein, The locking assembly includes: a first stopper slidably provided on the shaft sleeve of the second transmission assembly in the first direction; a second stopper slidably provided on the shaft sleeve of the second transmission assembly in the first direction, and the first stopper or the second stopper abutting against the synchronizer of the second transmission assembly; the locking assembly being used to lock the middle frame fixing member in the first position when the first stopper or the second stopper abuts against the first side wall of the second transmission assembly, and the locking assembly being used to lock the middle frame fixing member in the second position when the first stopper or the second stopper abuts against the second side wall of the second transmission assembly.

16. The connection device of claim 15, wherein, The first stopper includes a first stopper part and a first accommodating part connected with each other, the shaft sleeve of the second transmission assembly being provided with a second accommodating part arranged in the first direction, the first stopper part being arranged at one end of the second accommodating part, and the first accommodating part being located in the second accommodating part; the second stopper including a second stopper part and a third sliding part connected with each other, the second stopper part being arranged at the other end of the second accommodating part, and the third sliding part being slidably fitted in the first accommodating part; the locking assembly further including an elastic part, the elastic part being located in the second accommodating part and sleeved on the outside of the first accommodating part, one end of the elastic part abutting against the first stopper part, and the other end of the elastic part abutting against the second stopper part.

17. The connection device of claim 16, wherein, The first sliding part has a first side wall and a second side wall, an extension plane of the first side wall is perpendicular to an extension plane of the second side wall, in the first position, the first side wall abuts against the first stop part or the second stop part, and in the second position, the second side wall abuts against the first stop part or the second stop part.

18. The connection device of claim 1, wherein, The middle frame fixing member comprises: a middle frame fixing member body; a fourth connecting part provided on one side of the middle frame fixing member body adjacent to the third transmission assembly, the fourth connecting part being provided with a sliding groove extending in the second direction, and the second end of the third transmission assembly being slidably fitted in the sliding groove on the fourth connecting part; a fifth connecting part provided on one side of the middle frame fixing member body adjacent to the third transmission assembly, the fifth connecting part and the fourth connecting part being arranged in the second direction, the fifth connecting part being provided with a sliding groove extending in the first direction, and the third end of the third transmission assembly being slidably fitted in the sliding groove on the fifth connecting part.

19. The connection arrangement of any one of claims 1-18, wherein, The connecting device further comprises a rotating shaft cover, the first transmission assembly is hinged to the rotating shaft cover, and at least part of the first transmission assembly and the second transmission assembly is arranged in the rotating shaft cover.

20. A terminal device, comprising: The connecting device comprises the connecting device according to any one of claims 1-19. The connecting device comprises the connecting device according to any one of claims 1-19.

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